Include materialize.hpp in the view builder test

The test calls detail::view::materialize(), which only the single header pulled in; the multiple-header build (JSON_TEST_USING_MULTIPLE_HEADERS) failed with "'materialize' is not a member of detail::view". Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Address the review: null inline nodes, trait spelling, and max() in json_view
2026-11-10 16:31:28 +00:00 · 2026-10-17 08:30:49 +02:00 · 2026-10-17 08:30:48 +02:00 · 2026-10-17 08:30:47 +02:00 · 2026-10-17 08:30:46 +02:00 · 2026-10-17 08:30:45 +02:00
277 changed files with 3495 additions and 599286 deletions
@@ -108,16 +108,9 @@ The tests are located in [`tests/src/unit-*.cpp`](https://github.com/nlohmann/js
 are structured along the features of the library or the nature of the tests. Usually, it should be clear from the
 context which existing file needs to be extended, and only very few cases require creating new test files.

-When fixing a bug, edit `unit-regression3.cpp` and add a section referencing the fixed issue. Tests that need C++17 or
-C++20 go into `unit-regression3-cpp17.cpp` or `unit-regression3-cpp20.cpp` instead, so the large file is not rebuilt
-for every C++ standard. `unit-regression2.cpp` holds the older tests; the two files exist because a single one grew
-large enough for the MinGW linker to fail relocating it, so please keep adding to the smaller file rather than growing
-the larger one.
-
-To keep compile times down, several test files are compiled together as one translation unit. This sets a few rules
-for test files, such as giving file-scope helpers file-specific names. See the README in the
-[`tests`](https://github.com/nlohmann/json/tree/develop/tests) folder for how the tests are built and what to keep in
-mind when adding them.
+When fixing a bug, edit `unit-regression3.cpp` and add a section referencing the fixed issue.
+`unit-regression2.cpp` holds the older tests; the two files exist because a single one grew large enough for the
+MinGW linker to fail relocating it, so please keep adding to the smaller file rather than growing the larger one.

 #### Exceptions

@@ -62,13 +62,12 @@ labels:
    - "include/nlohmann/detail/view/.*"
    - "single_include/nlohmann/json_view\\.hpp"
    - "tests/src/unit-json_view.*"
-    - "tests/src/json_view_test_helpers\\.hpp"
-    - "tests/src/fuzzer-(parse_json_view|json_view_image)\\.cpp"
+    - "tests/src/fuzzer-parse_json_view\\.cpp"
    - "tools/amalgamate/config_json_view\\.json"
    - "docs/mkdocs/docs/features/json_view\\.md"
    - "docs/mkdocs/docs/api/basic_json_(document|view)/.*"
-    - "docs/mkdocs/docs/api/(ordered_)?json_(editable_)?(document|view)\\.md"
-    - "docs/mkdocs/docs/examples/(basic_json_(document|view)__|(ordered_)?json_(editable_)?(document|view)).*"
+    - "docs/mkdocs/docs/api/(ordered_)?json_(document|view)\\.md"
+    - "docs/mkdocs/docs/examples/(basic_json_(document|view)__|(ordered_)?json_(document|view)).*"
    - "tests/benchmarks/src/benchmarks_view\\.cpp"

 - label: "aspect: json_view"
@@ -37,7 +37,7 @@ jobs:
          path: pr/

  check:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    env:
      MAIN_DIR: ${{ github.workspace }}/main
      INCLUDE_DIR: ${{ github.workspace }}/main/single_include/nlohmann
@@ -77,12 +77,13 @@ jobs:
          cd $MAIN_DIR

          # Built from this PR's own tools/macro_builder/main.cpp, not a
-          # develop checkout: unlike amalgamate.py, this tool has no other
-          # source of truth to check against (its own README documents that
-          # it must reproduce macro_scope.hpp byte for byte), so there is
-          # nothing to gain from checking out a separate copy, and doing so
-          # would make this step fail on a PR that adds support for a new
-          # dispatch table until that PR itself merges to develop.
+          # develop checkout: unlike amalgamate.py and generate_natvis.py,
+          # this tool has no other source of truth to check against (its
+          # own README documents that it must reproduce macro_scope.hpp
+          # byte for byte), so there is nothing to gain from checking out a
+          # separate copy, and doing so would make this step fail on a PR
+          # that adds support for a new dispatch table until that PR itself
+          # merges to develop.
          TMPDIR=$(mktemp -d ./macro_builder_check.XXXXXX)
          c++ -std=c++11 tools/macro_builder/main.cpp -o "$TMPDIR/macro_builder"
          "$TMPDIR/macro_builder" > "$TMPDIR/paste.hpp"
@@ -145,14 +146,14 @@ jobs:
      - name: Regenerate nlohmann_json.natvis
        run: |
          cd $MAIN_DIR
-          # The generator and its template are what this check verifies the
-          # committed natvis file against (which namespaces it lists, and
-          # what each entry looks like), so run this PR's copy rather than
-          # the develop checkout's: with develop's, a PR that changes either
-          # could never pass. generate_natvis.py loads the template from its
-          # own directory. Like the macro_builder step above, this only runs
-          # PR content in a job without credentials.
-          python3 tools/generate_natvis/generate_natvis.py $MAIN_DIR
+          # The template is what this check verifies the committed natvis
+          # file against, so take it from this PR rather than from the
+          # develop checkout: generate_natvis.py loads the template from its
+          # own directory, and with develop's copy a PR that changes the
+          # template could never pass. Like the macro_builder step above,
+          # this only renders PR content in a job without credentials.
+          cp tools/generate_natvis/nlohmann_json.natvis.j2 $NATVIS_TOOL_DIR/
+          python3 $NATVIS_TOOL_DIR/generate_natvis.py $MAIN_DIR

      - name: Build patch and check for differences
        id: diff
@@ -21,7 +21,7 @@ permissions:
 jobs:
  CodeQL-Build:

-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    permissions:
      security-events: write

@@ -50,7 +50,7 @@ jobs:
          persist-credentials: false

      - name: "Run analysis"
-        uses: ossf/scorecard-action@fa7117db83c52d787ae5a89f350999701505d78e # v2.5.0
+        uses: ossf/scorecard-action@2d1146689b8cda280b9bc96326124645441f03bc # v2.4.4
        with:
          results_file: results.sarif
          results_format: sarif
@@ -33,7 +33,7 @@ jobs:
      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
    name: Scan
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@ccd8616d44fd3846e67624a50d5aad6d37bf2d25 # v2.22.1
@@ -32,7 +32,7 @@ jobs:
        run: cmake --build build --target ci_test_gcc

  ci_meson_install:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
@@ -77,7 +77,7 @@ jobs:
          cmake --build build-import-split

  ci_infer:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@ccd8616d44fd3846e67624a50d5aad6d37bf2d25 # v2.22.1
@@ -106,7 +106,7 @@ jobs:
          if-no-files-found: ignore

  ci_static_analysis_ubuntu:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [ci_test_single_header, ci_cppcheck, ci_cpplint, ci_reproducible_tests, ci_non_git_tests, ci_offline_testdata, ci_reuse_compliance, ci_test_valgrind]
@@ -175,7 +175,7 @@ jobs:
        run: cmake --build build --target ${{ matrix.target }}

  ci_test_coverage:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@ccd8616d44fd3846e67624a50d5aad6d37bf2d25 # v2.22.1
@@ -430,7 +430,7 @@ jobs:
        run: cmake --build build --target ci_nvhpc

  ci_emscripten:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@ccd8616d44fd3846e67624a50d5aad6d37bf2d25 # v2.22.1
@@ -450,7 +450,7 @@ jobs:
        run: cmake --build build

  ci_test_documentation:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [ci_test_examples, ci_test_build_documentation, ci_test_documentation_mermaid]
@@ -60,6 +60,3 @@ MODULE.bazel.lock
 /json.tar.xz.asc
 /release_files/
 /single_include/nlohmann/*.asc
-
-# GCC module cache
-/gcm.cache/
@@ -1,7 +1,6 @@
 {
  "_comment": "Used by the ci_infer CMake target (#5715 item 4b). fail-on-issue makes CI fail on Infer findings; disable-issue-type is a type-level baseline for the ~174 pre-existing findings (all PULSE_UNNECESSARY_COPY*/PULSE_RESOURCE_LEAK/PULSE_CONST_REFABLE, mostly in test code) triaged in run https://github.com/nlohmann/json/actions/runs/35829411620 on commit 1054b2097, so CI fails only on a NEW issue type. Remove an entry here once its findings have been fixed or explicitly accepted.",
  "_comment_pulse": "Pulse stops exploring paths after pulse-max-disjuncts (default 20). With the default, basic_json::replace_value() (destroy + assert_invariant) exceeds the limit, Pulse loses the stored type, and reports false NULLPTR_DEREFERENCE findings for get_ptr() results in tests/src/unit-pointer_access.cpp.",
-  "_comment_view": "Infer's model of std::unique_ptr mixes up values that are returned by value and own one: basic_json_document (parse() results) and the `built` values of the build() helper in tests/src/unit-json_view_builder.cpp. It reports USE_AFTER_DELETE for one of them after the destructor of an unrelated object (e.g. ~built() on line 345 invalidating `shallow` on line 350 of that file, or two documents parsed in one lambda in tests/src/unit-json_view_dump.cpp). AddressSanitizer and Valgrind are clean on the same tests, so reports for the json_view test files are excluded; findings reported in the library headers are still reported.",
  "pulse-max-disjuncts": 40,
  "fail-on-issue": true,
  "disable-issue-type": [
@@ -11,8 +10,5 @@
    "PULSE_UNNECESSARY_COPY_OPTIONAL",
    "PULSE_RESOURCE_LEAK",
    "PULSE_CONST_REFABLE"
-  ],
-  "report-block-list-path-regex": [
-    "tests/src/unit-json_view.*\\.cpp"
  ]
 }
@@ -68,27 +68,16 @@ cc_library(
        "include/nlohmann/detail/string_utils.hpp",
        "include/nlohmann/detail/value_t.hpp",
        "include/nlohmann/detail/view/builder.hpp",
-        "include/nlohmann/detail/view/compare.hpp",
        "include/nlohmann/detail/view/document_data.hpp",
-        "include/nlohmann/detail/view/edit.hpp",
-        "include/nlohmann/detail/view/edit_storage.hpp",
        "include/nlohmann/detail/view/errors.hpp",
-        "include/nlohmann/detail/view/image.hpp",
        "include/nlohmann/detail/view/input.hpp",
-        "include/nlohmann/detail/view/iterator.hpp",
-        "include/nlohmann/detail/view/lookup.hpp",
        "include/nlohmann/detail/view/macro_scope.hpp",
        "include/nlohmann/detail/view/macro_unscope.hpp",
        "include/nlohmann/detail/view/materialize.hpp",
        "include/nlohmann/detail/view/node.hpp",
        "include/nlohmann/detail/view/number.hpp",
-        "include/nlohmann/detail/view/object_index.hpp",
-        "include/nlohmann/detail/view/pointer.hpp",
        "include/nlohmann/detail/view/scan.hpp",
-        "include/nlohmann/detail/view/serializer.hpp",
-        "include/nlohmann/detail/view/simd.hpp",
        "include/nlohmann/detail/view/string_ref.hpp",
-        "include/nlohmann/detail/view/value.hpp",
        "include/nlohmann/json.hpp",
        "include/nlohmann/json_fwd.hpp",
        "include/nlohmann/json_literals.hpp",
@@ -1410,7 +1410,6 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
 - The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
 - The class contains an adapted version of the Eisel-Lemire algorithm, its table of powers of five, and its digit comparison for long numbers from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
 - The view's parser (`<nlohmann/json_view.hpp>`) contains techniques and code adapted from [yyjson](https://github.com/ibireme/yyjson) by YaoYuan, which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above): table-driven decoding of `\u` escapes and fixed-offset unrolled checks.
- The view's parser (`<nlohmann/json_view.hpp>`) validates non-ASCII strings with the vector UTF-8 check of [simdjson](https://github.com/simdjson/simdjson) by Daniel Lemire, Geoff Langdale, John Keiser, and contributors (its "lookup4" algorithm and tables, after J. Keiser and D. Lemire, "Validating UTF-8 In Less Than One Instruction Per Byte", 2021), which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here) and the Apache 2.0 License. Copyright &copy; 2018-2025 The simdjson authors

 <img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">

@@ -361,10 +361,10 @@ add_custom_target(ci_test_coverage
    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_coverage32
    COMMAND cd ${PROJECT_BINARY_DIR}/build_coverage32 && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure

-    COMMAND ${LCOV_TOOL} --directory . --capture --output-file json.info --rc branch_coverage=1 --rc geninfo_unexecuted_blocks=1 --ignore-errors mismatch --ignore-errors unused --ignore-errors inconsistent
-    COMMAND ${LCOV_TOOL} -e json.info ${SRC_FILES} --output-file json.info.filtered --rc branch_coverage=1 --ignore-errors unused --ignore-errors inconsistent
+    COMMAND ${LCOV_TOOL} --directory . --capture --output-file json.info --rc branch_coverage=1 --rc geninfo_unexecuted_blocks=1 --ignore-errors mismatch --ignore-errors unused
+    COMMAND ${LCOV_TOOL} -e json.info ${SRC_FILES} --output-file json.info.filtered --rc branch_coverage=1 --ignore-errors unused
    COMMAND ${CMAKE_SOURCE_DIR}/tests/thirdparty/imapdl/filterbr.py json.info.filtered > json.info.filtered.noexcept
-    COMMAND ${GENHTML_TOOL} --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage --ignore-errors inconsistent json.info.filtered.noexcept
+    COMMAND ${GENHTML_TOOL} --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage json.info.filtered.noexcept

    COMMENT "Compile and test with coverage"
 )
@@ -890,11 +890,11 @@ add_custom_target(ci_icpx
 # The following tests are excluded as they trigger known nvc++ 25.5 defects (not
 # library bugs); see https://github.com/nlohmann/json for tracking. Only the
 # affected language-standard variants are excluded so coverage is otherwise kept:
-#   - test-comparison-cpp20_cpp20, test-comparison_legacy-cpp20_cpp20
+#   - test-comparison_cpp20, test-comparison_legacy_cpp20
 #         miscompiles cross-type/<=> comparison (e.g. `-17 <= null`)
 #   - test-constructor1_cpp11
 #         std::initializer_list lifetime bug -> SIGSEGV
-#   - test-deserialization-cpp20_cpp20
+#   - test-deserialization_cpp20
 #         mangles the UTF-8 u8"" string literal in the char8_t (C++20) section
 add_custom_target(ci_nvhpc
    COMMAND ${CMAKE_COMMAND}
@@ -906,7 +906,7 @@ add_custom_target(ci_nvhpc
    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_nvhpc
    # the pipes are escaped so the surrounding shell passes them to ctest verbatim
    # instead of treating them as shell pipe operators
-    COMMAND cd ${PROJECT_BINARY_DIR}/build_nvhpc && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-comparison-cpp20_cpp20\\|test-comparison_legacy-cpp20_cpp20\\|test-constructor1_cpp11\\|test-deserialization-cpp20_cpp20" --output-on-failure
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_nvhpc && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-comparison_cpp20\\|test-comparison_legacy_cpp20\\|test-constructor1_cpp11\\|test-deserialization_cpp20" --output-on-failure
    COMMENT "Compile and test with NVIDIA HPC SDK (nvc++)"
 )

@@ -1 +1 @@
-cppcheck==1.5.3
+cppcheck==1.5.2
@@ -109,55 +109,6 @@ function(_json_test_apply_test_properties test_target properties_target)
    endif()
 endfunction()

-# for internal use by _json_test_add_test() and _json_test_add_unity_batch():
-# registers the CTest test <test_name>_cpp<cxx_standard> (plus its Valgrind
-# variant), which runs the executable target <test_target> with the arguments
-# in ARGN, and applies the test properties of the test- and standard-specific
-# interface targets
-function(_json_test_register_test test_name test_target cxx_standard)
-    set(ctest_name ${test_name}_cpp${cxx_standard})
-
-    if (JSON_FastTests)
-        add_test(NAME ${ctest_name}
-            COMMAND ${test_target} ${DOCTEST_TEST_FILTER} ${ARGN}
-            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-        )
-    else()
-        add_test(NAME ${ctest_name}
-            COMMAND ${test_target} ${DOCTEST_TEST_FILTER} ${ARGN} --no-skip
-            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-        )
-    endif()
-    set_tests_properties(${ctest_name} PROPERTIES LABELS "all" FIXTURES_REQUIRED TEST_DATA)
-
-    # apply standard-specific test properties
-    if(TARGET _json_test_interface__cpp_${cxx_standard})
-        _json_test_apply_test_properties(${ctest_name} _json_test_interface__cpp_${cxx_standard})
-    endif()
-
-    # apply test-specific test properties
-    if(TARGET _json_test_interface_${test_name})
-        _json_test_apply_test_properties(${ctest_name} _json_test_interface_${test_name})
-    endif()
-
-    # apply test- and standard-specific test properties
-    if(TARGET _json_test_interface_${test_name}_cpp_${cxx_standard})
-        _json_test_apply_test_properties(${ctest_name}
-            _json_test_interface_${test_name}_cpp_${cxx_standard}
-        )
-    endif()
-
-    if(JSON_Valgrind)
-        add_test(NAME ${ctest_name}_valgrind
-            COMMAND ${memcheck_command} $<TARGET_FILE:${test_target}> ${DOCTEST_TEST_FILTER} ${ARGN}
-            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-        )
-        set_tests_properties(${ctest_name}_valgrind PROPERTIES
-            LABELS "valgrind" FIXTURES_REQUIRED TEST_DATA
-        )
-    endif()
-endfunction()
-
 # for internal use by json_test_add_test_for()
 function(_json_test_add_test test_name file main cxx_standard)
    set(test_target ${test_name}_cpp${cxx_standard})
@@ -192,7 +143,45 @@ function(_json_test_add_test test_name file main cxx_standard)
        )
    endif()

-    _json_test_register_test(${test_name} ${test_target} ${cxx_standard})
+    if (JSON_FastTests)
+        add_test(NAME ${test_target}
+            COMMAND ${test_target} ${DOCTEST_TEST_FILTER}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    else()
+        add_test(NAME ${test_target}
+            COMMAND ${test_target} ${DOCTEST_TEST_FILTER} --no-skip
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    endif()
+    set_tests_properties(${test_target} PROPERTIES LABELS "all" FIXTURES_REQUIRED TEST_DATA)
+
+    # apply standard-specific test properties
+    if(TARGET _json_test_interface__cpp_${cxx_standard})
+        _json_test_apply_test_properties(${test_target} _json_test_interface__cpp_${cxx_standard})
+    endif()
+
+    # apply test-specific test properties
+    if(TARGET _json_test_interface_${test_name})
+        _json_test_apply_test_properties(${test_target} _json_test_interface_${test_name})
+    endif()
+
+    # apply test- and standard-specific test properties
+    if(TARGET _json_test_interface_${test_name}_cpp_${cxx_standard})
+        _json_test_apply_test_properties(${test_target}
+            _json_test_interface_${test_name}_cpp_${cxx_standard}
+        )
+    endif()
+
+    if(JSON_Valgrind)
+        add_test(NAME ${test_target}_valgrind
+            COMMAND ${memcheck_command} $<TARGET_FILE:${test_target}> ${DOCTEST_TEST_FILTER}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+        set_tests_properties(${test_target}_valgrind PROPERTIES
+            LABELS "valgrind" FIXTURES_REQUIRED TEST_DATA
+        )
+    endif()
 endfunction()

 #############################################################################
@@ -211,14 +200,6 @@ endfunction()
 # Use NAME <name> to override the filename-derived test name.
 # Use FORCE to create the test regardless of the file containing
 # JSON_HAS_CPP_<version_number>.
-#
-# Tests that depend on the C++ standard (e.g., because they use the macros
-# JSON_HAS_FILESYSTEM, JSON_HAS_RANGES, or JSON_HAS_THREE_WAY_COMPARISON)
-# should not make the whole of a large unit-foo.cpp be rebuilt for every
-# standard. Put them into a separate file unit-foo-cpp<NN>.cpp (see, e.g.,
-# unit-items-cpp17.cpp) which wraps its content in #ifdef JSON_HAS_CPP_<NN>.
-# Then, unit-foo.cpp itself contains no JSON_HAS_CPP_<NN> and is only built for
-# C++11.
 # Test targets are linked against <main>.
 # CXX_STANDARDS defaults to "11".
 #############################################################################
@@ -262,314 +243,6 @@ function(json_test_add_test_for file)
    endforeach()
 endfunction()

-# for internal use by json_test_add_unity_tests(): sets <result> to whether the
-# (absolute) <file> is built for <cxx_standard>; same rule as in
-# json_test_add_test_for(): C++11 always, others only if the file contains
-# JSON_HAS_CPP_<cxx_standard> or <force> is set
-function(_json_test_unity_applies file cxx_standard force result)
-    set(${result} TRUE PARENT_SCOPE)
-    if(NOT ("${cxx_standard}" STREQUAL 11 OR force))
-        file(READ ${file} file_content)
-        string(FIND "${file_content}" JSON_HAS_CPP_${cxx_standard} has_cpp_found)
-        if(${has_cpp_found} EQUAL -1)
-            set(${result} FALSE PARENT_SCOPE)
-        endif()
-    endif()
-endfunction()
-
-# for internal use by json_test_add_unity_tests(): creates the executable
-# test-unity-<batch_name>_cpp<cxx_standard> from the (absolute) source files
-# in ARGN, which are #include-d by a generated source file, and registers one
-# CTest test per source file that runs only the test cases of that file; if
-# <private> is true, the generated file defines JSON_TESTS_PRIVATE first
-function(_json_test_add_unity_batch batch_name cxx_standard main private)
-    set(batch_target test-unity-${batch_name}_cpp${cxx_standard})
-    set(batch_source ${PROJECT_BINARY_DIR}/tests/unity/${batch_target}.cpp)
-
-    set(batch_content "// generated by cmake/test.cmake; do not edit\n")
-    if(private)
-        string(APPEND batch_content "// at least one file of this batch needs access to private members of the library\n")
-        string(APPEND batch_content "#define JSON_TESTS_PRIVATE\n")
-        # the files define the macro again; mark this definition as used, as
-        # -Wunused-macros reports an unused definition when it is redefined
-        string(APPEND batch_content "#ifdef JSON_TESTS_PRIVATE\n#endif\n")
-    endif()
-    foreach(file ${ARGN})
-        string(APPEND batch_content "#include \"${file}\" // NOLINT(bugprone-suspicious-include)\n")
-    endforeach()
-
-    # only touch the generated file if it changed to keep incremental builds incremental
-    set(old_content "")
-    if(EXISTS ${batch_source})
-        file(READ ${batch_source} old_content)
-    endif()
-    if(NOT "${old_content}" STREQUAL "${batch_content}")
-        file(WRITE ${batch_source} "${batch_content}")
-    endif()
-
-    add_executable(${batch_target} ${batch_source})
-    target_link_libraries(${batch_target} PRIVATE ${main})
-    set_target_properties(${batch_target} PROPERTIES
-        CXX_STANDARD ${cxx_standard}
-        CXX_STANDARD_REQUIRED ON
-    )
-    if(TARGET _json_test_interface__cpp_${cxx_standard})
-        target_link_libraries(${batch_target} PRIVATE _json_test_interface__cpp_${cxx_standard})
-    endif()
-
-    # rebuild the batch when one of its files changes, and show the files in IDEs;
-    # files that are also built standalone (VARIANT_FILES) are left out, as
-    # HEADER_FILE_ONLY is a per-file property and would also affect those targets
-    set_source_files_properties(${batch_source} PROPERTIES OBJECT_DEPENDS "${ARGN}")
-    foreach(file ${ARGN})
-        if(NOT file IN_LIST _json_test_unity_variant_files)
-            set_source_files_properties(${file} PROPERTIES HEADER_FILE_ONLY ON)
-            target_sources(${batch_target} PRIVATE ${file})
-        endif()
-    endforeach()
-
-    foreach(file ${ARGN})
-        get_filename_component(file_basename ${file} NAME_WE)
-        string(REGEX REPLACE "unit-(.+)" "test-\\1" test_name ${file_basename})
-
-        # run only the test cases defined in this file (and in the shared
-        # make_test_data_available.hpp if the file uses it)
-        file(READ ${file} file_content)
-        set(source_filter "--source-file=*${file_basename}.cpp")
-        string(FIND "${file_content}" make_test_data_available.hpp uses_test_data)
-        if(NOT ${uses_test_data} EQUAL -1)
-            string(APPEND source_filter ",*make_test_data_available.hpp")
-        endif()
-
-        _json_test_register_test(${test_name} ${batch_target} ${cxx_standard} "${source_filter}")
-    endforeach()
-endfunction()
-
-#############################################################################
-# json_test_add_unity_tests(
-#     FILES <files>...
-#     MAIN <main>
-#     [CXX_STANDARDS <version_number>...] [FORCE]
-#     [BATCH_SIZE <size>]
-#     [GROUPS <group>...]
-#     [VARIANT_FILES <files>...])
-#
-# Like calling json_test_add_test_for(<file> MAIN <main> ...) for each of the
-# <files>, but compiles several files together to speed up the build: for each
-# C++ standard, the files are split into batches of <size> files (default: 8)
-# and each batch is built as a single executable
-#
-#     test-unity-<pool><index>_cpp<version_number>
-#
-# whose generated source file #include-s the files of the batch (so they share
-# the template instantiations of the library). The tests are still named
-# test-foo_cpp<version_number>, one per file, but run the batch executable with
-# a doctest filter that selects the test cases of that file only.
-#
-# Files are only batched with files that agree on the macros defined before
-# the library is included: files that define at most JSON_TESTS_PRIVATE (or
-# macros derived from global compile definitions) form the pools "plain" and
-# "private". All other files are added with json_test_add_test_for() as usual,
-# as are files with test-specific build settings (see
-# json_test_set_test_options()) and the files listed in the explicit
-# exclusion list below.
-# Each <group> names a list variable json_test_unity_group_<group> of test file
-# stems (file names without "unit-" and ".cpp"). The batchable files of a group
-# are compiled together (regardless of BATCH_SIZE) as one executable
-#
-#     test-unity-<group>_cpp<version_number>
-#
-# so that related tests, which instantiate the same templates, share one
-# translation unit. A group may mix the pools "plain" and "private"; if any of
-# its files needs JSON_TESTS_PRIVATE, the whole group is built with it. Files
-# that cannot be batched stay standalone even if they are listed in a group.
-# Files in no group are batched by BATCH_SIZE as described above.
-# <files> in VARIANT_FILES are also built standalone with other settings, so
-# they are not marked as header-only sources of the batch.
-#############################################################################
-
-function(json_test_add_unity_tests)
-    cmake_parse_arguments(args "FORCE" "MAIN;BATCH_SIZE" "FILES;CXX_STANDARDS;VARIANT_FILES;GROUPS" ${ARGN})
-
-    if("${args_MAIN}" STREQUAL "")
-        message(FATAL_ERROR "Required argument MAIN <main> missing.")
-    endif()
-
-    if("${args_BATCH_SIZE}" STREQUAL "")
-        set(args_BATCH_SIZE 8)
-    endif()
-
-    if("${args_CXX_STANDARDS}" STREQUAL "")
-        set(args_CXX_STANDARDS 11)
-    endif()
-
-    if(args_FORCE)
-        set(force FORCE)
-    else()
-        set(force "")
-    endif()
-
-    set(_json_test_unity_variant_files "")
-    foreach(file ${args_VARIANT_FILES})
-        get_filename_component(file ${file} ABSOLUTE)
-        list(APPEND _json_test_unity_variant_files ${file})
-    endforeach()
-
-    # files that must not be merged into a batch: unit-32bit.cpp is only built
-    # for 32bit targets, and unit-no-macro-leak.cpp checks that including the
-    # library defines no unprefixed macro, which any other file would disturb
-    set(standalone_files unit-32bit.cpp unit-no-macro-leak.cpp)
-
-    set(harmless_macros "^(DOCTEST_.*|SKIP_TESTS_FOR_.*|JSON_TEST_DEPRECATED_FUNCTIONS_DELETED|JSON_TEST_STRICT_NUL_HANDLING_ENABLED|JSON_TEST_STRINGIZE)$")
-
-    # classify the files
-    set(plain_files "")
-    set(private_files "")
-    set(standalone_abs_files "")
-    foreach(file ${args_FILES})
-        get_filename_component(file_name ${file} NAME)
-        get_filename_component(file_basename ${file} NAME_WE)
-        string(REGEX REPLACE "unit-(.+)" "test-\\1" test_name ${file_basename})
-
-        set(batchable TRUE)
-        if(file_name IN_LIST standalone_files)
-            set(batchable FALSE)
-        endif()
-        if(TARGET _json_test_interface_${test_name})
-            set(batchable FALSE)
-        endif()
-        foreach(cxx_standard ${args_CXX_STANDARDS})
-            if(TARGET _json_test_interface_${test_name}_cpp_${cxx_standard})
-                set(batchable FALSE)
-            endif()
-        endforeach()
-
-        # files that suppress GCC's -Wnoexcept around their include of the
-        # library: the suppression has no effect once another file of the
-        # batch included the library first
-        if(batchable)
-            file(READ ${file} file_content)
-            string(FIND "${file_content}" "SUPPRESS_WARNING(\"-Wnoexcept\")" suppresses_noexcept)
-            if(NOT ${suppresses_noexcept} EQUAL -1)
-                set(batchable FALSE)
-            endif()
-        endif()
-
-        set(pool plain)
-        if(batchable)
-            # collect the macros (un)defined before the library is included
-            file(READ ${file} file_content)
-            string(FIND "${file_content}" "#include <nlohmann/" include_position)
-            if(NOT ${include_position} EQUAL -1)
-                string(SUBSTRING "${file_content}" 0 ${include_position} file_content)
-            endif()
-            string(REGEX MATCHALL "(^|\n)[ \t]*#[ \t]*(define|undef)[ \t]+[A-Za-z_0-9]+" directives "${file_content}")
-            foreach(directive ${directives})
-                string(REGEX REPLACE "^.*[ \t]([A-Za-z_0-9]+)$" "\\1" macro "${directive}")
-                if(macro MATCHES "${harmless_macros}")
-                    continue()
-                elseif("${macro}" STREQUAL JSON_TESTS_PRIVATE)
-                    set(pool private)
-                else()
-                    set(batchable FALSE)
-                endif()
-            endforeach()
-        endif()
-
-        get_filename_component(file_abs ${file} ABSOLUTE)
-        if(NOT batchable)
-            list(APPEND standalone_abs_files ${file_abs})
-            json_test_add_test_for(${file} MAIN ${args_MAIN} CXX_STANDARDS ${args_CXX_STANDARDS} ${force})
-            continue()
-        endif()
-        get_filename_component(file ${file} ABSOLUTE)
-        list(APPEND ${pool}_files ${file})
-    endforeach()
-
-    # resolve the explicit groups: group_<name>_files are the (absolute) files
-    # of the group, group_<name>_private tells whether one of them is private
-    set(grouped_files "")
-    foreach(group ${args_GROUPS})
-        if(NOT DEFINED json_test_unity_group_${group})
-            message(FATAL_ERROR "Unity test group '${group}' is not defined (json_test_unity_group_${group}).")
-        endif()
-        set(group_${group}_files "")
-        set(group_${group}_private FALSE)
-        foreach(stem ${json_test_unity_group_${group}})
-            # check against the source directory, because FILES may be filtered (JSON_TestShard)
-            get_filename_component(file ${CMAKE_CURRENT_SOURCE_DIR}/src/unit-${stem}.cpp ABSOLUTE)
-            if(NOT EXISTS ${file})
-                message(FATAL_ERROR "Unity test group '${group}' lists '${stem}', but ${file} does not exist.")
-            endif()
-            if(file IN_LIST grouped_files)
-                message(FATAL_ERROR "Unity test file unit-${stem}.cpp is listed in more than one group (second: '${group}').")
-            endif()
-            list(APPEND grouped_files ${file})
-
-            if(file IN_LIST standalone_abs_files)
-                message(STATUS "Unity test group '${group}': unit-${stem}.cpp cannot be batched and stays standalone")
-            elseif(file IN_LIST plain_files)
-                list(APPEND group_${group}_files ${file})
-                list(REMOVE_ITEM plain_files ${file})
-            elseif(file IN_LIST private_files)
-                list(APPEND group_${group}_files ${file})
-                list(REMOVE_ITEM private_files ${file})
-                set(group_${group}_private TRUE)
-            endif()
-        endforeach()
-    endforeach()
-
-    foreach(cxx_standard ${args_CXX_STANDARDS})
-        if(NOT compiler_supports_cpp_${cxx_standard})
-            continue()
-        endif()
-
-        # explicit groups: one batch per group
-        foreach(group ${args_GROUPS})
-            set(batch_files "")
-            foreach(file ${group_${group}_files})
-                _json_test_unity_applies(${file} ${cxx_standard} "${force}" applies)
-                if(applies)
-                    list(APPEND batch_files ${file})
-                endif()
-            endforeach()
-            if(batch_files)
-                _json_test_add_unity_batch(${group} ${cxx_standard} ${args_MAIN} ${group_${group}_private} ${batch_files})
-            endif()
-        endforeach()
-
-        # remaining files: batches of BATCH_SIZE files per pool
-        foreach(pool plain private)
-            set(is_private FALSE)
-            if(pool STREQUAL private)
-                set(is_private TRUE)
-            endif()
-
-            set(batch_files "")
-            set(batch_count 0)
-            set(batch_index 0)
-            foreach(file ${${pool}_files})
-                _json_test_unity_applies(${file} ${cxx_standard} "${force}" applies)
-                if(NOT applies)
-                    continue()
-                endif()
-
-                list(APPEND batch_files ${file})
-                math(EXPR batch_count "${batch_count} + 1")
-                if(batch_count EQUAL args_BATCH_SIZE)
-                    _json_test_add_unity_batch(${pool}${batch_index} ${cxx_standard} ${args_MAIN} ${is_private} ${batch_files})
-                    set(batch_files "")
-                    set(batch_count 0)
-                    math(EXPR batch_index "${batch_index} + 1")
-                endif()
-            endforeach()
-            if(batch_files)
-                _json_test_add_unity_batch(${pool}${batch_index} ${cxx_standard} ${args_MAIN} ${is_private} ${batch_files})
-            endif()
-        endforeach()
-    endforeach()
-endfunction()
-
 #############################################################################
 # json_test_should_build_32bit_test(
 #     <build_32bit_var> <build_32bit_only_var> <input>)
@@ -132,10 +132,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
 - [operator>>](../operator_gtgt.md) - deserialize from stream
 - [`JSON_STRICT_NUL_HANDLING`](../macros/json_strict_nul_handling.md) - opt in to rejecting a NUL byte in the input
  instead of treating it as end of input
- [`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md) - read a `std::istream` one character
-  at a time
- [`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md) - read a `FILE*` with the locking stdio
-  functions

 ## Version history

@@ -147,10 +143,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
 - Extended overload (2) to accept heterogeneous iterator+sentinel pairs (C++20 ranges support) in version 3.13.0.
 - `JSON_STRICT_NUL_HANDLING` added in version 3.13.0 to optionally reject a NUL byte in the input instead of treating
  it as end of input; planned to become the default in version 4.0.0.
- Parsing from an `std::istream` scans the characters in its stream buffer in bulk in version 3.13.0
-  ([`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md)).
- Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
-  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md)).

 !!! warning "Deprecation"

@@ -233,7 +233,6 @@ Strong exception safety: if an exception occurs, the original value stays intact
 - documentation on [checked access](../../features/element_access/checked_access.md)
 - [`operator[]`](operator%5B%5D.md) for unchecked access by reference
 - [`value`](value.md) for access with default value
- [basic_json_view::at](../basic_json_view/at.md) - the same access on a zero-copy view

 ## Version history

@@ -58,7 +58,6 @@ Constant.
 ## See also

 - [front](front.md) to access the first element
- [basic_json_view::back](../basic_json_view/back.md) - the same access on a zero-copy view

 ## Version history

@@ -44,8 +44,6 @@ Constant.
 - [rbegin](rbegin.md) returns a reverse iterator to the last element
 - [items](items.md) returns an iteration proxy to access keys and values during range-based for loops
 - [Iterators](../../features/iterators.md) - the article on iterators
- [basic_json_view::begin](../basic_json_view/begin.md) - the same iteration on a zero-copy view (in document order,
-  not sorted by key)

 ## Version history

@@ -42,7 +42,6 @@ Constant.
 - [cend](cend.md) returns a const iterator to one past the last element
 - [crbegin](crbegin.md) returns a const reverse iterator to the last element
 - [Iterators](../../features/iterators.md) - the article on iterators
- [basic_json_view::cbegin](../basic_json_view/cbegin.md) - the same iteration on a zero-copy view

 ## Version history

@@ -42,7 +42,6 @@ Constant.
 - [cbegin](cbegin.md) returns a const iterator to the first element
 - [crend](crend.md) returns a const reverse iterator to one before the first element
 - [Iterators](../../features/iterators.md) - the article on iterators
- [basic_json_view::cend](../basic_json_view/cend.md) - the same iteration on a zero-copy view

 ## Version history

@@ -136,7 +136,6 @@ Logarithmic in the size of the JSON object.

 - [find](find.md) find a value in an object
 - [count](count.md) returns the number of occurrences of a key
- [basic_json_view::contains](../basic_json_view/contains.md) - the same check on a zero-copy view

 ## Version history

@@ -87,7 +87,6 @@ Logarithmic in the size of the JSON object.

 - [find](find.md) find a value in an object
 - [contains](contains.md) checks whether a key exists
- [basic_json_view::count](../basic_json_view/count.md) - the same check on a zero-copy view

 ## Version history

@@ -91,8 +91,6 @@ Binary values are serialized as an object containing two keys:

 - [to_string](to_string.md) returns a string representation of a JSON value
 - [operator<<](../operator_ltlt.md) serialize to stream
- [`basic_json_view::dump`](../basic_json_view/dump.md) the corresponding function of `basic_json_view`, serializing
-  directly from a flat index without building a `basic_json` value
 - [Serialization](../../features/serialization.md) - the serialization article

 ## Version history
@@ -43,7 +43,6 @@ Constant.
 - [cend](cend.md) returns a const iterator to one past the last element
 - [rend](rend.md) returns a reverse iterator to one before the first element
 - [Iterators](../../features/iterators.md) - the article on iterators
- [basic_json_view::end](../basic_json_view/end.md) - the same iteration on a zero-copy view

 ## Version history

@@ -93,8 +93,6 @@ Logarithmic in the size of the JSON object.

 - [count](count.md) returns the number of occurrences of a key
 - [contains](contains.md) checks whether a key exists
- [basic_json_view::find](../basic_json_view/find.md) - the same lookup on a zero-copy view (a duplicate key resolves
-  to the first member, whereas `parse()` keeps the last)

 ## Version history

@@ -51,8 +51,6 @@ Constant.
 ## See also

 - [back](back.md) to access the last element
- [basic_json_view::front](../basic_json_view/front.md) - the same access on a zero-copy view (document order, not
-  sorted; duplicate keys are visited)

 ## Version history

@@ -183,8 +183,6 @@ overload (3).
 - [get_ref](get_ref.md) get a reference to the stored value
 - [operator ValueType](operator_ValueType.md) get a value via implicit conversion
 - [Converting values](../../features/conversions.md) - the type conversions article
- [basic_json_view::get](../basic_json_view/get.md) - the same conversion on a zero-copy view (many types are
-  converted without ever building a `basic_json` value)

 ## Version history

@@ -61,8 +61,6 @@ Constant.
 ## See also

 - [get_ptr()](get_ptr.md) get a pointer value
- [basic_json_view::get_string](../basic_json_view/get_string.md) - the closest counterpart on a zero-copy view: a
-  string without a copy, but as a view rather than a reference to a value that must already exist

 ## Version history

@@ -72,7 +72,6 @@ Depends on the `json_serializer<ValueType>::from_json()` implementation.
 - [get_ref](get_ref.md) get a reference to the stored value
 - [get_ptr](get_ptr.md) get a pointer to the stored value
 - [Converting values](../../features/conversions.md) - the type conversions article
- [basic_json_view::get_to](../basic_json_view/get_to.md) - the same conversion on a zero-copy view

 ## Version history

@@ -99,8 +99,6 @@ When iterating over an array, `key()` will return the index of the element as st

 - [begin](begin.md) returns an iterator to the first element
 - [end](end.md) returns an iterator to one past the last element
- [basic_json_view::items](../basic_json_view/items.md) - the same range on a zero-copy view (`#!cpp const auto`,
-  not `#!cpp const auto&`: items are produced on the fly; document order, not sorted; duplicate keys are visited)

 ## Version history

@@ -275,9 +275,6 @@ Strong exception safety: if an exception occurs, the original value stays intact
 - documentation on [runtime assertions](../../features/assertions.md)
 - see [`at`](at.md) for access by reference with range checking
 - see [`value`](value.md) for access with default value
- [basic_json_view::operator[]](../basic_json_view/operator%5B%5D.md) - the same access on a zero-copy view (a duplicate
-  key resolves to the first member, whereas `parse()` keeps the last; a missing key gives a discarded view instead of
-  undefined behavior)

 ## Version history

@@ -170,8 +170,6 @@ Linear.

 - [operator!=](operator_ne.md) compare for inequality
 - [operator<=>](operator_spaceship.md) comparison: 3-way (C++20)
- [basic_json_view::operator==](../basic_json_view/operator_eq.md) - the same comparison on a zero-copy view, without
-  building a `basic_json` value for it

 ## Version history

@@ -95,8 +95,6 @@ Linear.

 - [operator==](operator_eq.md) comparison: equal
 - [operator<=>](operator_spaceship.md) comparison: 3-way (C++20)
- [basic_json_view::operator!=](../basic_json_view/operator_ne.md) - the same comparison on a zero-copy view, without
-  building a `basic_json` value for it

 ## Version history

@@ -112,16 +112,6 @@ By default, a `'\0'` (NUL) byte anywhere in the input is treated as end of input
 outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-bytes-in-the-input) for details and the
 [`JSON_STRICT_NUL_HANDLING`](../macros/json_strict_nul_handling.md) macro to opt into rejecting it instead.

-!!! tip "Performance"
-
-    Contiguous inputs (strings, string views, vectors, arrays, pointer ranges) are the fastest to parse. A
-    `#!cpp std::istream` comes close: the parser scans the characters its stream buffer holds in bulk, without reading
-    ahead, so the stream is left exactly where it would be after reading one character at a time. A `#!cpp FILE*` is
-    read one character at a time, but the file is locked only once, so other threads that use the same `FILE` object
-    wait until parsing is done. See [input sources and performance](../../features/parsing/index.md#input-sources-and-performance),
-    [`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md), and
-    [`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md).
-
 ## Examples

 ??? example "Example: (1) parse from a character array"
@@ -257,10 +247,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
 - [operator>>](../operator_gtgt.md) - deserialize from stream
 - [`JSON_STRICT_NUL_HANDLING`](../macros/json_strict_nul_handling.md) - opt in to rejecting a NUL byte in the input
  instead of treating it as end of input
- [`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md) - read a `std::istream` one character
-  at a time
- [`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md) - read a `FILE*` with the locking stdio
-  functions

 ## Version history

@@ -275,11 +261,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
  it as end of input; planned to become the default in version 4.0.0.
 - Extended empty-input detection to also cover an `std::istream` without a stream buffer, and fixed a crash
  (`std::terminate`) when parsing from an `std::istream` with `eofbit` in its exception mask, in version 3.13.0.
- Parsing from an `std::istream` scans the characters in its stream buffer in bulk in version 3.13.0
-  ([`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md) restores reading one character at a
-  time).
- Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
-  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md) restores `std::fgetc`).

 !!! warning "Deprecation"

@@ -116,10 +116,6 @@ consumer `sax` has a super-linear complexity.

 A UTF-8 byte order mark is silently ignored.

-When reading from a `#!c FILE*`, the file is locked while it is parsed. The lock is recursive, so the SAX handler may
-use the same file with stdio functions, but it must not wait for another thread that uses the same `FILE` object; see
-[`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md).
-
 ## Examples

 ??? example
@@ -141,10 +137,6 @@ use the same file with stdio functions, but it must not wait for another thread

 - [parse](parse.md) - deserialize from a compatible input
 - [accept](accept.md) - check if the input is valid JSON
- [`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md) - read a `std::istream` one character
-  at a time
- [`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md) - read a `FILE*` with the locking stdio
-  functions

 ## Version history

@@ -156,10 +148,6 @@ use the same file with stdio functions, but it must not wait for another thread
 - Extended overload (2) to accept heterogeneous iterator+sentinel pairs (C++20 ranges support) in version 3.13.0.
 - `JSON_PRECISE_STREAM_POSITION` added in version 3.13.0 to optionally leave a `#!cpp std::istream` positioned right
  after the parsed value when `strict` is `#!cpp false`.
- Parsing from an `std::istream` scans the characters in its stream buffer in bulk in version 3.13.0
-  ([`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md)).
- Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
-  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md)).

 !!! warning "Deprecation"

@@ -123,6 +123,4 @@ Linear in the size of the JSON value `j`.
  that is not valid UTF-8 unchanged, as before; `strict` (the default if
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled) throws `type_error.316`.
 - Throws `type_error.321` for a discarded value since version 3.13.0; previously, a discarded value nested in an
-  array or object was silently skipped, producing invalid BJData.
- Writes unsigned integers wider than 64 bits as high-precision numbers since version 3.13.0; previously, they were
-  silently truncated to 64 bits.
+  array or object was silently skipped, producing invalid BJData.
@@ -37,9 +37,8 @@ With (2), the bytes written before the exception remain in the output adapter.

 ## Exceptions

- Throws [out_of_range.407](../../home/exceptions.md#jsonexceptionout_of_range407) if `j` contains an integer outside
-  the range of int64 (an unsigned integer above 9223372036854775807, or, with a number type wider than 64 bits, any
-  integer beyond int64), which BON8 cannot represent
+- Throws [out_of_range.407](../../home/exceptions.md#jsonexceptionout_of_range407) if `j` contains an unsigned integer
+  above 9223372036854775807, which BON8 cannot represent
 - Throws [type_error.316](../../home/exceptions.md#jsonexceptiontype_error316) if `j` contains a string that is not
  valid UTF-8
 - Throws [type_error.321](../../home/exceptions.md#jsonexceptiontype_error321) if `j` or a value nested in it is
@@ -47,10 +47,6 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va

 - Throws [`type_error.317`](../../home/exceptions.md#jsonexceptiontype_error317) if the top-level type of the JSON value
  is not an object; example: `"to serialize to BSON, top-level type must be object, but is string"`
- Throws [`out_of_range.407`](../../home/exceptions.md#jsonexceptionout_of_range407) if `j` contains a signed integer
-  outside the range of int64 or an unsigned integer outside the range of uint64, which is only possible with a number
-  type wider than 64 bits; example:
-  `"integer number 9223372036854775808 cannot be represented by BSON as it does not fit int64"`
 - Throws [`out_of_range.409`](../../home/exceptions.md#jsonexceptionout_of_range409) if a key in the JSON object contains
  a null byte (code point U+0000); example: `"BSON key cannot contain code point U+0000 (at byte 2)"`
 - Throws [`out_of_range.412`](../../home/exceptions.md#jsonexceptionout_of_range412) if the length of a document, array,
@@ -123,5 +119,3 @@ pass before anything is written.
  that is not valid UTF-8 unchanged, as before; `strict` (the default if
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled) throws `type_error.316` before anything
  is written.
- Throws `out_of_range.407` for integers that do not fit 64 bits since version 3.13.0; previously, integers of a
-  number type wider than 64 bits were silently truncated.
@@ -46,9 +46,6 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va

 ## Exceptions

- Throws [`out_of_range.407`](../../home/exceptions.md#jsonexceptionout_of_range407) if `j` contains an integer
-  outside [-2^64, 2^64-1], which is only possible with a number type wider than 64 bits; example:
-  `"integer number 18446744073709551616 cannot be represented by CBOR as it does not fit [-2^64, 2^64-1]"`
 - Throws [type_error.316](../../home/exceptions.md#jsonexceptiontype_error316) if a string or object key in `j` is
  not valid UTF-8 and `error_handler` is `strict` (the default only if
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled)
@@ -93,5 +90,3 @@ Linear in the size of the JSON value `j`.
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled) throws `type_error.316`.
 - Throws `type_error.321` for a discarded value since version 3.13.0; previously, a discarded value nested in an
  array or object was silently skipped, producing invalid CBOR.
- Throws `out_of_range.407` for integers that do not fit 64 bits since version 3.13.0; previously, integers of a
-  number type wider than 64 bits were silently truncated.
@@ -46,9 +46,6 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va

 ## Exceptions

- Throws [`out_of_range.407`](../../home/exceptions.md#jsonexceptionout_of_range407) if `j` contains an integer
-  outside [-2^63, 2^64-1], which is only possible with a number type wider than 64 bits; example:
-  `"integer number 18446744073709551616 cannot be represented by MessagePack as it does not fit [-2^63, 2^64-1]"`
 - Throws [`out_of_range.412`](../../home/exceptions.md#jsonexceptionout_of_range412) if the length of a string, binary
  value, array, or object exceeds 4294967295, the maximum MessagePack can store; example:
  `"MessagePack length 4294967296 exceeds maximum of 4294967295"`
@@ -115,5 +112,3 @@ Linear in the size of the JSON value `j`.
  `number_unsigned_t`.
 - Throws `type_error.321` for a discarded value since version 3.13.0; previously, a discarded value nested in an
  array or object was silently skipped, producing invalid MessagePack.
- Throws `out_of_range.407` for integers that do not fit 64 bits since version 3.13.0; previously, integers of a
-  number type wider than 64 bits were silently truncated.
@@ -56,7 +56,6 @@ Constant.

 - [type](type.md) returns the type of the JSON value
 - [value_t](value_t.md) the enumeration of JSON types
- [basic_json_view::type_name](../basic_json_view/type_name.md) - the same function on a zero-copy view

 ## Version history

@@ -224,7 +224,6 @@ changes to any JSON value.

 - see [`at`](at.md) for access by reference with range checking
 - see [`operator[]`](operator%5B%5D.md) for unchecked access by reference
- [basic_json_view::value](../basic_json_view/value.md) - the same access on a zero-copy view

 ## Version history

@@ -1,129 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>erase
-
-```cpp
-// (1)
-std::size_t erase(view_type object, string_view_t key);
-
-// (2)
-template<typename I>
-void erase(view_type array, I idx);
-
-// (3)
-std::size_t erase(const json_pointer& ptr);
-```
-
-Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
-has `erase`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
-
-1. Removes every member of `object` whose key is `key` (see [Notes](#notes) on duplicate keys) and returns how many
-   were removed; `#!cpp 0` if `object` has no member with this key.
-2. Removes the element at index `idx` of `array`, which must already exist (`#!cpp idx < array.size()`).
-3. Removes the value the JSON pointer `ptr` refers to, relative to [`root()`](root.md). `ptr` must not be empty
-   ([`root()`](root.md) itself cannot be erased), and the *parent* of the target must already exist. The target is
-   removed as in 1. if the parent is an object (returns the number of removed members, `#!cpp 0` or more) and as in 2.
-   if it is an array (always returns `#!cpp 1`).
-
-## Template parameters
-
-`I`
-:   an integral type other than `#!cpp bool`, deduced (overloads taking a `#!cpp bool` or a non-integral type for
-    `idx` do not participate in overload resolution).
-
-## Parameters
-
-`object` (in)
-:   the object to remove a member of
-
-`array` (in)
-:   the array to remove an element of
-
-`key` (in)
-:   the key of the member(s) to remove
-
-`idx` (in)
-:   the index of the element to remove; a negative value throws (see [Exceptions](#exceptions))
-
-`ptr` (in)
-:   a JSON pointer to the value to remove, relative to `root()`
-
-## Return value
-
-1. the number of removed members (`#!cpp 0` if `object` had none with this `key`)
-2. (nothing)
-3. the number of removed values (`#!cpp 0` or more for an object member, always `#!cpp 1` for an array element)
-
-## Exceptions
-
-1. Throws [`type_error.307`](../../home/exceptions.md#jsonexceptiontype_error307) if `object` is not an object -- the
-   same message [`BasicJsonType::erase`](../basic_json/erase.md) throws for the same type.
-2. Throws `type_error.307` if `array` is not an array. Throws
-   [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if `idx` is negative, or if
-   `#!cpp idx >= array.size()`.
-3. Throws [`out_of_range.405`](../../home/exceptions.md#jsonexceptionout_of_range405) ("JSON pointer has no parent")
-   if `ptr` is empty. Throws what [`at`](../basic_json_view/at.md) throws (overload 3) for resolving `ptr`'s parent.
-   For the last reference token itself: if the parent is an array, throws what 2. throws for an index that is out of
-   range, or, for a token that is not a valid array index,
-   [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) (a leading `#!cpp '0'`),
-   [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) (not a number),
-   [`out_of_range.410`](../../home/exceptions.md#jsonexceptionout_of_range410) (too large for `size_type`), or
-   [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) (an empty token); otherwise (an
-   object, or a primitive value the pointer's parent resolves to) throws what 1. throws.
-
-Overloads 1. and 2. also throw [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202)
-("view does not belong to this document") if `object`/`array` is a [discarded](../basic_json_view/is_discarded.md)
-view or a view of a *different* document. Overload 3. never throws `invalid_iterator.202`: it takes no view, and it
-always starts from this document's own [`root()`](root.md).
-
-## Complexity
-
-1. Linear in the number of members of `object`.
-2. Linear in the number of elements of `array` at or after `idx` (they move one slot over).
-3. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level or the index into the array (as [`at`](../basic_json_view/at.md)), plus the complexity of 1. or 2. for
-   the last token.
-
-## Notes
-
-!!! info "Duplicate keys"
-
-    Overload 1. removes *every* member with `key`, not just the first -- unlike [`set`](set.md), which assigns the
-    first occurrence and drops the rest. This is why it returns a count rather than a single view: there may be
-    more than one member removed, or none.
-
-Like [`set`](set.md) and [`push_back`](push_back.md), `erase` never moves an element's *value*: a view still
-referring to a removed member or element keeps showing what it last held (see [Edits](index.md#edits)) -- it just no
-longer appears when `array`/`object` is read, dumped, or iterated. What does change is the container's sequence of
-*links* to its elements: removing an element of `array` (2.) shifts the links to the elements after it by one, as
-[`insert`](insert.md) does in the other direction. *Every* iterator already taken over `array`/`object` is invalidated
-by an erase, not only those at or after the removed element, since the container may now use a different sequence.
-
-## Examples
-
-??? example
-
-    The example below drops a deprecated field and a decommissioned entry from a configuration document -- using all
-    three overloads -- and shows what stays intact that would not with a plain `json`/`ordered_json` value: the order
-    of the fields around the ones removed, and the exact spelling of a number that was never touched.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__erase.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__erase.output"
-    ```
-
-## See also
-
- [insert](insert.md) - insert an element into an array
- [set](set.md) - replace a value, or set an object member, an array element, or the value a JSON pointer refers to
- [push_back](push_back.md) - append to an array
- [root](root.md) - the view of the root value, the starting point of overload 3
- [`BasicJsonType::erase`](../basic_json/erase.md) - the corresponding function of `basic_json`
- [Edits](index.md#edits) - what an edit guarantees, for every overload
-
-## Version history
-
- Added in version 3.13.0.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>

 ```cpp
-template<typename BasicJsonType, bool Editable = false>
+template<typename BasicJsonType>
 class basic_json_document;
 ```

@@ -20,11 +20,6 @@ is move-only: a copy would duplicate the whole index, the decoded-string buffer,
 enough in every use we know of. The index, the decoded strings, and the owned text live in one heap block that the
 document holds through a `#!cpp std::unique_ptr`; this is also why views survive a move of the document.

-With `#!cpp Editable == true`, the document also offers [`set`](set.md), [`push_back`](push_back.md),
-[`insert`](insert.md), and [`erase`](erase.md) to change values in place, see [Edits](#edits) below. The source text
-itself is never written; a read-only document (`#!cpp Editable == false`, the default) does not carry any of the
-bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp static_assert`).
-
 ## Template parameters

 `BasicJsonType`
@@ -32,38 +27,23 @@ bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp
    [`ordered_json`](../ordered_json.md). Only 64-bit `number_integer_t`/`number_unsigned_t` types are supported; this
    is checked with a `static_assert`.

-`Editable`
-:   whether the document supports [`set`](set.md), [`push_back`](push_back.md), [`insert`](insert.md), and
-    [`erase`](erase.md) (optional, `#!cpp false` by default). See [Edits](#edits) below.
-
 ## Specializations

- [**json_document**](../json_document.md) - read-only documents of the default specialization [`json`](../json.md)
- [**ordered_json_document**](../ordered_json_document.md) - read-only documents of
-  [`ordered_json`](../ordered_json.md)
- [**json_editable_document**](../json_editable_document.md) - editable documents of [`json`](../json.md)
- [**ordered_json_editable_document**](../ordered_json_editable_document.md) - editable documents of
-  [`ordered_json`](../ordered_json.md)
+- [**json_document**](../json_document.md) - documents of the default specialization [`json`](../json.md)
+- [**ordered_json_document**](../ordered_json_document.md) - documents of [`ordered_json`](../ordered_json.md)

 ## Member types

- **view_type** - the type of view returned by [`root()`](root.md) (`#!cpp basic_json_view<BasicJsonType, Editable>`)
+- **view_type** - the type of view returned by [`root()`](root.md) (`#!cpp basic_json_view<BasicJsonType>`)
 - **value_t** - the JSON type enumeration, see [`basic_json::value_t`](../basic_json/value_t.md)
- **image_check** - how [`load()`](load.md) validates an image (`full`, `bounds`, `none`), see [`image_check`](load.md#image_check)

 ## Member functions

 - [(constructor)](basic_json_document.md)
-
-### Parsing
-
 - [**parse**](parse.md) (_static_) - deserialize from a compatible input, borrowing or owning it as appropriate
 - [**parse_copy**](parse_copy.md) (_static_) - deserialize a copy of a compatible input
 - [**accept**](accept.md) (_static_) - check whether the input is valid JSON
 - [**read**](read.md) - (re-)parse into this document, reusing its memory
-
-### Access
-
 - [**root**](root.md) - the view of the root value
 - [**is_discarded**](is_discarded.md) - return whether the last parse failed
 - [**source**](source.md) - the parsed text
@@ -72,49 +52,6 @@ bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp
 - [**memory_usage**](memory_usage.md) - the number of bytes held by the document
 - [**shrink_to_fit**](shrink_to_fit.md) - release unused index capacity

-### Images
-
- [**save**](save.md) - the document as an image that `load()` reads without parsing
- [**load**](load.md) (_static_) - read an image written by `save()`
-
-### Edits
-
- [**set**](set.md) - replace a value, or set an object member, an array element, or the value a JSON pointer refers
-  to (`#!cpp Editable` documents only)
- [**push_back**](push_back.md) - append to an array (`#!cpp Editable` documents only)
- [**insert**](insert.md) - insert an element into an array before a given position (`#!cpp Editable` documents only)
- [**erase**](erase.md) - remove an object member, an array element, or the value a JSON pointer refers to
-  (`#!cpp Editable` documents only)
-
-## Edits
-
-An editable document (`#!cpp Editable == true`) can be changed after parsing, with [`set`](set.md),
-[`push_back`](push_back.md), [`insert`](insert.md), and [`erase`](erase.md);
-[`json_editable_document`](../json_editable_document.md) and
-[`ordered_json_editable_document`](../ordered_json_editable_document.md) are the corresponding specializations. A few
-points apply to every edit:
-
- **The source text is never written**, and the parsed index never moves: every value keeps the node it was parsed
-  into, so [views](../basic_json_view/index.md) taken before an edit stay valid, including
-  [`root()`](root.md). New values (and the element sequences of an edited array/object) go to storage owned by the
-  document, allocated on demand.
- **A view keeps referring to the same value.** After [`set`](set.md) replaces the value a view refers to, that view
-  sees the new value; a view of a value that a later edit replaces or drops keeps showing what it last held. An edit
-  of an array or object, however, **invalidates the iterators taken over it** (its members may now live in a
-  different sequence), and a string obtained with [`get_string()`](../basic_json_view/get_string.md) stays valid even
-  as further edits happen (earlier buffers of edited text are kept alive, not overwritten).
- **Values are accepted three ways:** a [`basic_json_view`](../basic_json_view/index.md) of *any* document
-  (read-only or editable; it is copied, nothing is shared with the source document), a `BasicJsonType` value, or
-  anything `BasicJsonType` can be constructed from (numbers, strings, `#!cpp bool`, `#!cpp nullptr`, containers, ...).
- [`dump()`](../basic_json_view/dump.md) writes an edited document with members in document order, new members at
-  the end, and, with [`number_format::source`](../basic_json_view/number_format.md), keeps the spelling of every
-  number that was not itself edited -- see [Editing a document](../../features/json_view.md#editing-a-document) for
-  why this matters.
- [`read()`](read.md) discards all edits, [`shrink_to_fit()`](shrink_to_fit.md) does not move the node index once
-  there are edits, and [`memory_usage()`](memory_usage.md) includes the memory edits use.
-  [`source_offset()`](../basic_json_view/source_offset.md) of a value introduced by an edit is
-  `#!cpp static_cast<std::size_t>(-1)`, the same value it reports for a decoded string.
-
 ## Version history

 - Added in version 3.13.0.
@@ -1,114 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>insert
-
-```cpp
-template<typename I, typename V>
-view_type insert(view_type array, I idx, V&& value);
-```
-
-Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
-has `insert`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
-
-Inserts `value` into `array` as a new element before position `idx`, which must not be past the end
-(`#!cpp idx <= array.size()`; `#!cpp idx == array.size()` appends, like [`push_back`](push_back.md)). Unlike
-[`push_back`](push_back.md), a [null](../basic_json_view/is_null.md) `array` does *not* first become an empty array:
-`array` must already be an array.
-
-`value` is accepted three ways: a [`basic_json_view`](../basic_json_view/index.md) of *any* document -- read-only or
-editable, and it does not have to be `array`'s own document -- which is copied so that nothing is shared with the
-source document afterward; a `BasicJsonType` value; or anything `BasicJsonType` can be constructed from (numbers,
-strings, `#!cpp bool`, `#!cpp nullptr`, containers, ...).
-
-## Template parameters
-
-`I`
-:   an integral type other than `#!cpp bool`, deduced (overloads taking a `#!cpp bool` or a non-integral type for
-    `idx` do not participate in overload resolution).
-
-`V`
-:   the type of `value`, deduced; see above for what is accepted.
-
-## Parameters
-
-`array` (in)
-:   the array to insert into
-
-`idx` (in)
-:   the position to insert `value` before; a negative value throws (see [Exceptions](#exceptions))
-
-`value` (in)
-:   the value to insert
-
-## Return value
-
-a view of the new element, now holding `value`
-
-## Exception safety
-
-Basic exception safety: `value` is fully encoded -- including the checks below -- into storage owned by the document
-before anything already reachable from [`root()`](root.md) is touched, so a failure while encoding `value` (an
-invalid argument, or `#!cpp std::bad_alloc`) leaves the document completely unchanged, other than memory allocated
-for the encoding that is not reclaimed. A failure of a later allocation -- while `array` switches from its parsed
-layout to a growable block, or while that block grows, see [Notes](#notes) -- can still leave `array` already
-switched to that layout even though `value` itself was not inserted.
-
-## Exceptions
-
-Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if `array` is not an array -- the same
-message [`BasicJsonType::insert`](../basic_json/insert.md) throws for the same type; a null `array` throws this too
-(see above). Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if `idx` is negative,
-or if `#!cpp idx > array.size()`. Throws
-[`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) ("view does not belong to this
-document") if `array` is a [discarded](../basic_json_view/is_discarded.md) view or a view of a *different* document.
-Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `value` is a
-[discarded](../basic_json_view/is_discarded.md) view or a [discarded](../basic_json/is_discarded.md) `BasicJsonType`
-value, and [`type_error.319`](../../home/exceptions.md#jsonexceptiontype_error319) if `value` is (or contains) a
-binary value -- `BasicJsonType` can hold one, but a `json_document` cannot. Throws
-[`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316) if `value` is (or contains) a string that is
-not valid UTF-8, with the same message [`BasicJsonType::dump()`](../basic_json/dump.md) gives for that string.
-
-## Complexity
-
-Linear in the number of elements of `array` at or after `idx` (they move one slot over), plus time linear in the
-size of `value` to encode it into the document's storage (constant for a scalar, linear in the number of nested
-values for an array or object): like [`push_back`](push_back.md), the elements of `array` move to a growable block
-of links the first time it is inserted into (or [`set`](set.md)/[`push_back`](push_back.md) on), and that block
-grows in amortized constant time; inserting before the end within that block still shifts every later element.
-
-## Notes
-
-Like [`set`](set.md) on a member or an element, `insert` never moves an existing *element's value* -- only where
-`array`'s *links* to its elements live -- so a view of an existing element of `array` stays valid across an
-`insert`, and keeps referring to the same element even though its index shifts. Any iterator already taken over
-`array` is invalidated, since it was walking the old layout. See [Edits](index.md#edits) for what stays valid across
-an edit in general.
-
-## Examples
-
-??? example
-
-    The example below inserts a step into the middle of a deployment plan, without touching the steps that come
-    after it, and shows that a view taken before the insert keeps referring to the same element even though its
-    index shifts -- something a plain `json`/`ordered_json` array, or its `std::vector`-based storage, has no
-    equivalent for.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__insert.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__insert.output"
-    ```
-
-## See also
-
- [push_back](push_back.md) - append to an array
- [erase](erase.md) - remove an object member, an array element, or the value a JSON pointer refers to
- [set](set.md) - replace a value, or set an object member, an array element, or the value a JSON pointer refers to
- [`BasicJsonType::insert`](../basic_json/insert.md) - the corresponding function of `basic_json`
- [Edits](index.md#edits) - what an edit guarantees, for every overload
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,179 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>load
-
-```cpp
-// (1)
-static basic_json_document load(const std::uint8_t* image, std::size_t size,
-                                 const image_check check = image_check::full);
-
-// (2)
-static basic_json_document load(const std::vector<std::uint8_t>& image,
-                                 const image_check check = image_check::full);
-
-// (3)
-static basic_json_document load(std::vector<std::uint8_t>&& image,
-                                 const image_check check = image_check::full);
-```
-
-1. Reads an image [`save()`](save.md) wrote, from a pointer and a byte count. The image is **borrowed**: `image`
-   must stay alive and unchanged for as long as the returned document, and any view taken from it, is used.
-2. Reads an image from a `#!cpp std::vector`. Also **borrowed** -- equivalent to overload 1 called with
-   `#!cpp image.data()` and `#!cpp image.size()`.
-3. Reads an image, keeping the vector instead of copying it: `image` is moved into the document (no copy), which
-   then owns it for as long as it needs the text and the decoded strings. [`owns_source()`](owns_source.md) is
-   `#!cpp true` afterward.
-
-In every overload, the node index is copied into storage the document itself owns -- so that it is properly aligned,
-and, for an [editable](index.md#edits) document, can be edited -- while the text and the decoded strings stay in
-`image`. The hash indexes [large objects](../../features/json_view.md) use for lookup are rebuilt, exactly as after
-parsing.
-
-## Parameters
-
-`image` (in)
-:   the image [`save()`](save.md) wrote (overloads 1 and 2), or one to take ownership of (overload 3)
-
-`size` (in)
-:   the number of bytes at `image` (overload 1)
-
-`check` (in)
-:   how thoroughly to validate `image` before trusting it; see [`image_check`](#image_check) below (optional,
-    `#!cpp image_check::full` by default)
-
-## Return value
-
-The document read from the image.
-
-## Exception safety
-
-Overloads 1 and 2 give the strong guarantee: `image` is only read, never written, so a thrown exception leaves the
-caller's buffer untouched.
-
-Overload 3 moves `image` into the document *before* validating it, so that a good image is kept without a copy. If
-loading then fails, the partially built document -- and the vector now inside it -- is discarded along with the
-exception, and `image` itself is left **empty**, not restored to what was passed in. Move a copy in instead, or
-validate with overload 2 first, if the original vector must survive a failed load.
-
-## Exceptions
-
-On a big-endian target, throws [`type_error.320`](../../home/exceptions.md#jsonexceptiontype_error320) -- the same
-exception [`save()`](save.md#exceptions) throws there, since the image format is little-endian only.
-
-Otherwise throws [`parse_error.116`](../../home/exceptions.md#jsonexceptionparse_error116) if `image` is not one
-`save()` could have written, or fails the requested `check`:
-
-| message               | when                                                                                                |
-|------------------------|------------------------------------------------------------------------------------------------------|
-| `too short`            | `image` is `#!cpp nullptr`, or `size` is smaller than the 64-byte header                             |
-| `unknown format`       | the header's magic bytes or version do not match, or a reserved header field is not zero             |
-| `sizes out of range`   | the node count, text size, or decoded-string size the header describes does not fit `size`, or the `#!cpp '\0'` after the text or after the decoded strings is missing |
-| `the check failed`     | `check` is not `#!cpp image_check::none`, and the image fails it -- see [`image_check`](#image_check) |
-
-!!! failure "Example messages"
-
-    ```
-    [json.exception.parse_error.116] parse error: invalid json_document image: too short
-    ```
-    ```
-    [json.exception.parse_error.116] parse error: invalid json_document image: unknown format
-    ```
-    ```
-    [json.exception.parse_error.116] parse error: invalid json_document image: sizes out of range
-    ```
-    ```
-    [json.exception.parse_error.116] parse error: invalid json_document image: the check failed
-    ```
-
-## Complexity
-
-Linear in the number of nodes, which are always copied into the document. `#!cpp image_check::none` does not read
-the text or the decoded strings. `#!cpp image_check::bounds` reads one byte of the text for each float token (its sign,
-to check the recorded digits against the token's length), and nothing else of the text or the decoded strings.
-
-With `#!cpp image_check::full`, linear in the size of the image (the nodes, the text, and the decoded strings), plus
-sorting the ranges of the strings and of the float tokens (at most one per node): the contents of each distinct range
-are checked once, however many nodes refer to it.
-
-## Notes
-
-### `image_check` { #image_check }
-
-```cpp
-using image_check = detail::view::image_check;
-
-enum class image_check
-{
-    full,
-    bounds,
-    none
-};
-```
-
-How thoroughly `load()` validates `image` before trusting it.
-
-`full` (the default)
-:   Checks everything the parser itself guarantees: structure and bounds; that every string is valid UTF-8 (and, for a
-    string still in the source text, that it contains no quote, backslash, or control character); and that every number
-    token is well-formed and matches the value stored for it. Strings and float tokens may share a range only if the
-    ranges are identical (as nodes that share a value do), and never overlap otherwise. Reading and serializing a
-    checked image is safe and always produces valid JSON, exactly as for a parsed document. This is the right choice for
-    an image from anything you do not fully control -- a file, a cache shared with other processes, a peer on the
-    network.
-
-`bounds`
-:   Checks structure and bounds only: that every offset and count in the node index stays inside the image. So
-    `load()`, [`root()`](root.md), element access, and [`materialize()`](../basic_json_view/materialize.md) can never
-    read outside the image, even on a damaged one. It does *not* guarantee that the image describes valid JSON: a
-    string that a `full` check would have rejected can make [`dump()`](../basic_json_view/dump.md) write invalid UTF-8
-    or invalid JSON, or throw [`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316), and a number can
-    read back with a value that does not match how it is spelled. An [editable document](../json_editable_document.md)
-    does not take such a string over: [`set`](set.md), [`push_back`](push_back.md) and [`insert`](insert.md) throw
-    `type_error.316` when they copy it from a view of the loaded document, and leave the editable document unchanged.
-    `bounds` skips scanning the text and the decoded strings, so it fits a cache your own process just wrote and reads
-    straight back, where damage would mean a bug or a hardware fault rather than adversarial input.
-
-`none`
-:   Checks nothing. Reading a damaged image is undefined behavior, so use it only for an image you trust as much as
-    your own memory.
-
-**Lifetime.** Overloads 1 and 2 borrow `image`: it must stay alive and byte-for-byte unchanged for as long as the
-returned document, and any [view](../basic_json_view/index.md) taken from it, is used -- exactly like a document
-[`parse()`](parse.md) borrowed its input for. Overload 3 avoids this by keeping the vector itself; see
-[`owns_source`](owns_source.md).
-
-!!! warning "Experimental"
-
-    The image format is versioned but not yet stable, and may change in an incompatible way before it is declared
-    stable; `load()` already rejects an image written by a different format version with `parse_error.116`
-    ("unknown format"). Use images to cache a document within one build of the library, or to hand one to another
-    process running the *same* build on the *same* (little-endian) machine -- not as a long-term storage format.
-
-## Examples
-
-??? example "Caching a document, ownership, and a rejected image"
-
-    The example below saves a parsed document as an image, checks that `load()` reproduces the original
-    [`dump()`](../basic_json_view/dump.md) without parsing, and shows the difference between
-    `load(std::move(image))` (owned) and `load(image)` (borrowed). It then damages one byte of the image and shows
-    `image_check::full` rejecting it with `parse_error.116`, while `image_check::bounds` -- meant for a cache the
-    process already trusts -- still reads it without going out of bounds.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__load.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__load.output"
-    ```
-
-## See also
-
- [save](save.md) - write the document as an image
- [owns_source](owns_source.md) - return whether the document holds its own copy of the text
- [parse](parse.md) - deserialize from JSON text instead of an image
- [Images](../../features/json_view.md#images) - why and when to use images
-
-## Version history
-
- Added in version 3.13.0.
@@ -149,7 +149,6 @@ buffer of a given length, pass a pair of pointers: `#!cpp parse(ptr, ptr + len)`
 - [accept](accept.md) - check whether the input is valid JSON
 - [read](read.md) - (re-)parse into this document, reusing its memory
 - [owns_source](owns_source.md) - return whether the document holds its own copy of the text
- [load](load.md) - read a document from an image instead of parsing JSON text
 - [`BasicJsonType::parse`](../basic_json/parse.md) - the corresponding function of `basic_json`

 ## Version history
@@ -1,102 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>push_back
-
-```cpp
-template<typename V>
-view_type push_back(view_type array, V&& value);
-```
-
-Appends `value` as a new last element of `array`. A [null](../basic_json_view/is_null.md) `array` first becomes an
-empty array, the same way [`set`](set.md) turns a null `object` into an empty object.
-
-`value` is accepted three ways: a [`basic_json_view`](../basic_json_view/index.md) of *any* document -- read-only or
-editable, and it does not have to be `array`'s own document -- which is copied so that nothing is shared with the
-source document afterward; a `BasicJsonType` value; or anything `BasicJsonType` can be constructed from (numbers,
-strings, `#!cpp bool`, `#!cpp nullptr`, containers, ...).
-
-Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
-has `push_back`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
-
-## Template parameters
-
-`V`
-:   the type of `value`, deduced; see above for what is accepted.
-
-## Parameters
-
-`array` (in)
-:   the array (or null value) to append to
-
-`value` (in)
-:   the value to append
-
-## Return value
-
-a view of the new last element of `array`, now holding `value`
-
-## Exception safety
-
-Basic exception safety: `value` is fully encoded -- including the checks below -- into storage owned by the document
-before anything already reachable from [`root()`](root.md) is touched, so a failure while encoding `value` (an
-invalid argument, or `#!cpp std::bad_alloc`) leaves the document completely unchanged, other than memory allocated
-for the encoding that is not reclaimed. A failure of a later allocation -- while `array` switches from its parsed
-layout to a growable block, or while that block grows, see [Notes](#notes) -- can still leave a partial effect, such
-as a null `array` argument already turned into an empty array even though `value` itself was not appended.
-
-## Exceptions
-
-Throws [`type_error.308`](../../home/exceptions.md#jsonexceptiontype_error308) if `array` is neither an array nor
-null -- the same message [`BasicJsonType::push_back`](../basic_json/push_back.md) throws for the same type. Throws
-[`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) ("view does not belong to this
-document") if `array` is a [discarded](../basic_json_view/is_discarded.md) view or a view of a *different* document.
-Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `value` is a
-[discarded](../basic_json_view/is_discarded.md) view or a [discarded](../basic_json/is_discarded.md) `BasicJsonType`
-value, and [`type_error.319`](../../home/exceptions.md#jsonexceptiontype_error319) if `value` is (or contains) a
-binary value -- `BasicJsonType` can hold one, but a `json_document` cannot. Throws
-[`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316) if `value` is (or contains) a string that is
-not valid UTF-8, with the same message [`BasicJsonType::dump()`](../basic_json/dump.md) gives for that string.
-
-## Complexity
-
-Amortized constant, plus time linear in the size of `value` to encode it into the document's storage (constant for
-a scalar, linear in the number of nested values for an array or object): the elements of `array` move to a growable
-block of links the first time it is appended to (or [`set`](set.md) on), and that block itself grows -- doubling its
-capacity, so the cost of growing it amortizes to constant per element -- only once it runs out of room. See
-[Notes](#notes).
-
-## Notes
-
-Like [`set`](set.md) on a member or an element, `push_back` never moves an existing element itself -- only where
-`array`'s *links* to its elements live -- so a view of an existing element of `array` stays valid across a
-`push_back`, but any iterator already taken over `array` is invalidated, since it was walking the old layout. See
-[Edits](index.md#edits) for what stays valid across an edit in general.
-
-## Examples
-
-??? example
-
-    The example below appends records to an array one at a time, as they might arrive from a stream of events,
-    without ever building a `BasicJsonType` value for the array or for the records already in it, and shows that a
-    view taken from an earlier `push_back` still refers to the same element once later ones have run.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__push_back.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__push_back.output"
-    ```
-
-## See also
-
- [set](set.md) - replace a value, or set an object member, an array element, or the value a JSON pointer refers to
- [insert](insert.md) - insert an element into an array before a given position
- [erase](erase.md) - remove an object member, an array element, or the value a JSON pointer refers to
- [root](root.md) - the view of the root value
- [`BasicJsonType::push_back`](../basic_json/push_back.md) - the corresponding function of `basic_json`
- [Edits](index.md#edits) - what an edit guarantees, for every overload
-
-## Version history
-
- Added in version 3.13.0.
@@ -51,11 +51,6 @@ own on the next, since ownership is decided freshly each time. An input that is
 [`parse()`](parse.md#notes)) is written into the document's previous owned copy, reusing its memory; a moved-in
 `#!cpp std::string` replaces it.

-Reusing a document matters most for large inputs: the operating system provides the memory of a fresh node index one
-page at a time, and every page costs a page fault the first time it is written. On x86-64 Linux (4 KiB pages), parsing
-a 55 MB document into a reused document took about 40 % less time than parsing it into a fresh one. Programs that parse
-many documents of similar size should therefore keep one document and call `read()`.
-
 An integer argument that is not a `#!cpp bool` where the flags are expected, such as `#!cpp read(ptr, len)`, does not
 compile; see [`parse`](parse.md#notes).

@@ -80,7 +75,6 @@ compile; see [`parse`](parse.md#notes).

 - [parse](parse.md) - deserialize from a compatible input
 - [root](root.md) - the view of the root value
- [load](load.md) - read a document from an image instead of parsing JSON text

 ## Version history

@@ -1,104 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>save
-
-```cpp
-std::vector<std::uint8_t> save() const;
-```
-
-Writes the document as an *image*: a byte buffer that [`load`](load.md) reads back without parsing. The image holds
-the node index, the source text (plus, for an edited document, the number tokens edits wrote), and the decoded
-strings (plus the strings edits wrote) -- everything [`root()`](root.md) needs, with nothing left to parse.
-
-An edited document is written in its *current* state, with its values in document order, the way the library's own
-parser would have produced them for that JSON text: a member [`set`](set.md) added goes at the end, an
-[`erase`](erase.md)d member leaves no trace, and a float that is not finite (NaN or positive/negative infinity)
-becomes null, the same substitution [`dump()`](../basic_json_view/dump.md) makes. The same document always saves to
-the same bytes -- also across `BasicJsonType` and `#!cpp Editable`, since the image reflects document order and
-values only, not which specialization produced them.
-
-## Return value
-
-The image, as a `#!cpp std::vector<std::uint8_t>`. Pass it, or a pointer to its data together with its size, to
-[`load`](load.md) to read the document back.
-
-## Exception safety
-
-Strong guarantee: `save()` does not modify `#!cpp *this` (it is `#!cpp const`), so if it throws, the document is left
-exactly as it was, and the partially built image is discarded with the exception.
-
-## Exceptions
-
-Throws [`type_error.320`](../../home/exceptions.md#jsonexceptiontype_error320) if the document is
-[discarded](is_discarded.md) -- a default-constructed document, or one a failed [`parse()`](parse.md)/
-[`read()`](read.md) with `allow_exceptions == false` left discarded.
-
-On a big-endian target, throws `type_error.320` with a different message instead: the image format is little-endian
-only (see [Notes](#notes)).
-
-Throws [`out_of_range.416`](../../home/exceptions.md#jsonexceptionout_of_range416) if the node count, the text, or
-the decoded strings of the image would individually reach 4 GiB -- the same 32-bit offsets
-[`parse()`](parse.md#exceptions) and, for edits, [`set`](set.md)/[`push_back`](push_back.md) are already limited to.
-
-!!! failure "Example messages"
-
-    ```
-    [json.exception.type_error.320] cannot save a discarded json_document
-    ```
-    ```
-    [json.exception.type_error.320] json_document images need a little-endian target
-    ```
-    ```
-    [json.exception.out_of_range.416] images of 4 GiB or more are not supported by json_document
-    ```
-
-## Complexity
-
-Linear in the size of the document: the number of nodes, plus the length of the text and the decoded strings that end
-up in the image.
-
-## Notes
-
-**Format.** The image begins with a 64-byte header (the magic bytes `#!cpp "NJVI"`, a version number, the node count,
-and the sizes of the text and the decoded strings, all little-endian), followed by the nodes
-([16 bytes each](../../home/architecture.md#node-index-of-json-views)), the text and a `#!cpp '\0'`, and the decoded
-strings and a `#!cpp '\0'`. [`load`](load.md) checks the header, and the sizes it describes, before reading anything
-else -- see [`load`'s Exceptions](load.md#exceptions).
-
-!!! warning "Experimental"
-
-    The image format is versioned but not yet stable: it may change in an incompatible way before it is declared
-    stable. Use images to cache a document within one build of the library, or to hand one to another process running
-    the *same* build on the *same* (little-endian) machine -- not as a long-term storage format. Keep the original
-    JSON text if you need to read a saved document back with a future library version.
-
-**Little-endian only.** The image is written as raw little-endian bytes, with no byte-swapping. `save()` (and
-[`load`](load.md)) throw `type_error.320` on a big-endian target rather than silently produce bytes a big-endian
-reader could not interpret correctly.
-
-## Examples
-
-??? example "Caching a parsed document as an image"
-
-    The example below saves a parsed configuration as an image -- the way a service might cache one to answer later
-    requests without parsing the text again -- and confirms that loading it back gives exactly the same result as
-    parsing did, and that saving is deterministic.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__save.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__save.output"
-    ```
-
-## See also
-
- [load](load.md) - read an image written by `save()`
- [owns_source](owns_source.md) - return whether the document holds its own copy of the text
- [`basic_json_view::dump`](../basic_json_view/dump.md) - serialize the document to JSON text instead of an image
- [Images](../../features/json_view.md#images) - why and when to use images
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,203 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>set
-
-```cpp
-// (1)
-template<typename V>
-view_type set(view_type target, V&& value);
-
-// (2)
-template<typename V>
-view_type set(view_type object, string_view_t key, V&& value);
-
-// (3)
-template<typename I, typename V>
-view_type set(view_type array, I idx, V&& value);
-
-// (4)
-template<typename V>
-view_type set(const json_pointer& ptr, V&& value);
-```
-
-Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
-has `set`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
-
-1. Replaces the value `target` refers to with `value`.
-2. Sets the member `key` of the object `object` to `value`: assigns it if `object` already has a member with this
-   key -- the first one, should the key occur more than once, and the later duplicates are then dropped (see the
-   [Notes](#notes) below) -- or appends a new member at the end otherwise. A [null](../basic_json_view/is_null.md)
-   `object` first becomes an empty object.
-3. Assigns `value` to the element at index `idx` of the array `array`, which must already exist (`#!cpp idx <
-   array.size()`).
-4. Sets the value the JSON pointer `ptr` refers to, relative to [`root()`](root.md), to `value`. The *parent* of the
-   target must already exist: an object member is set as in 2. (added if it does not exist yet), an array element is
-   assigned as in 3., and a last reference token of `#!cpp "-"`, or equal to the size of the array, appends `value`
-   instead, exactly as [`push_back`](push_back.md) would. A [null](../basic_json_view/is_null.md) parent becomes what
-   [`basic_json::operator[]`](../basic_json/operator%5B%5D.md) with a JSON pointer makes of it: an array if the last
-   reference token is `#!cpp "-"` or consists of digits only (for an index beyond 0, the array is first filled with
-   null values up to that index), an object otherwise. An empty `ptr` sets [`root()`](root.md) itself, as in 1.
-
-In every overload, `value` is accepted three ways: a [`basic_json_view`](../basic_json_view/index.md) of *any*
-document -- read-only or editable, and it does not have to be `target`'s/`object`'s/`array`'s own document -- which
-is copied so that nothing is shared with the source document afterward; a `BasicJsonType` value; or anything
-`BasicJsonType` can be constructed from (numbers, strings, `#!cpp bool`, `#!cpp nullptr`, containers, ...).
-
-## Template parameters
-
-`V`
-:   the type of `value`, deduced; see above for what is accepted.
-
-`I`
-:   an integral type other than `#!cpp bool`, deduced (overloads taking a `#!cpp bool` or a non-integral type for
-    `idx` do not participate in overload resolution).
-
-## Parameters
-
-`target` (in)
-:   the value to replace
-
-`object` (in)
-:   the object (or null value) whose member to set
-
-`array` (in)
-:   the array whose element to assign
-
-`key` (in)
-:   the key of the member to set
-
-`idx` (in)
-:   the index of the element to assign; a negative value throws (see [Exceptions](#exceptions))
-
-`ptr` (in)
-:   a JSON pointer to the value to set, relative to `root()`
-
-`value` (in)
-:   the new value
-
-## Return value
-
-1. a view of `target`, now holding `value`
-2. a view of the member `key` of `object`, now holding `value`
-3. a view of the element `idx` of `array`, now holding `value`
-4. a view of the value `ptr` refers to, now holding `value`
-
-## Exception safety
-
-Basic exception safety: `value` is fully encoded -- including the checks below -- into storage owned by the document
-before anything already reachable from [`root()`](root.md) is touched, so a failure while encoding `value` (an
-invalid argument, or `#!cpp std::bad_alloc`) leaves the document completely unchanged, other than memory allocated
-for the encoding that is not reclaimed. A failure of a later allocation -- while an edited array or object switches
-from its parsed layout to a growable block, see [Notes](#notes) -- can still leave a partial effect, such as a
-[null](../basic_json_view/is_null.md) `object`/`array` argument already turned into an empty object/array even
-though `value` itself was not linked in. Likewise, a failure of `value` in 4. leaves a null parent that is set with an
-index beyond 0 already filled with the null values before the index.
-
-## Exceptions
-
-1. Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `value` is a
-   [discarded](../basic_json_view/is_discarded.md) view, or a [discarded](../basic_json/is_discarded.md)
-   `BasicJsonType` value (e.g. `#!cpp BasicJsonType(value_t::discarded)`) -- an object or array `value`, of either
-   kind, is fine and is encoded as a whole subtree.
-2. Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if `object` is neither an object
-   nor null -- the same message [`operator[]`](../basic_json_view/operator%5B%5D.md) throws for a string argument on
-   such a value. Throws [`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316) if `key` is not
-   valid UTF-8, with the same message [`BasicJsonType::dump()`](../basic_json/dump.md) gives for that string.
-   Also throws what 1. throws for `value`.
-3. Throws `type_error.305` if `array` is not an array -- the same message `operator[]` throws for a numeric argument
-   on such a value. Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if `idx` is
-   negative, or if `#!cpp idx >= array.size()`. Also throws what 1. throws for `value`.
-4. Throws what [`at`](../basic_json_view/at.md) throws (overload 3) for resolving `ptr`'s parent, except that a
-   missing object member or an array index equal to the array's size at the very last reference token is not an
-   error there (it becomes a new member or an appended element) instead of
-   [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403)/[`out_of_range.402`](../../home/exceptions.md#jsonexceptionout_of_range402).
-   For the last reference token itself: if the parent is an object (or a primitive value, where it throws
-   `type_error.305`), throws what 2. throws; if the parent is an array, throws what 3. throws for an index that is
-   out of range, or, for a token that is not a valid array index,
-   [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) (a leading `#!cpp '0'`),
-   [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) (not a number),
-   [`out_of_range.410`](../../home/exceptions.md#jsonexceptionout_of_range410) (too large for `size_type`), or
-   [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) (an empty token); the same errors are
-   thrown for a null parent and a token of digits (the parent is not changed then), and
-   [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if the index is 4294967295 or more.
-   Also throws what 1. throws for `value`.
-
-Every overload also throws [`type_error.319`](../../home/exceptions.md#jsonexceptiontype_error319) if `value` is (or
-contains) a binary value -- `BasicJsonType` can hold one, but a `json_document` cannot -- and
-[`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) ("view does not belong to this
-document") if `target`/`object`/`array` is a [discarded](../basic_json_view/is_discarded.md) view or a view of a
-*different* document (overloads 1-3 only; overload 4 always starts from this document's own [`root()`](root.md)).
-
-## Complexity
-
-1. Linear in the size of `value` (encoding it into the document's storage): constant for a scalar, linear in the
-   number of nested values for an array or object. If `target` is itself an array or object that spans more than one
-   node in its parent's original, unedited layout, and `value` is a scalar, replacing it additionally costs time
-   linear in the size of the document, the *first* time (the parent of `target` is looked up from
-   [`root()`](root.md), and then switches to links) -- see [Notes](#notes). Once the parent has links, `target` is
-   replaced in constant time: setting every element of a large array one after the other is linear overall. To avoid
-   the lookup altogether, use 3. (or 2. for an object), which know the parent.
-2. Linear in the number of members of `object`, to find an existing member with `key`, plus the complexity of 1. for
-   `value`.
-3. Constant, plus the complexity of 1. for `value`.
-4. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level or the index into the array (as [`at`](../basic_json_view/at.md)), plus the complexity of 2. or 3. for
-   the last token; for a null parent and an index, linear in the index.
-
-## Notes
-
-!!! info "Duplicate keys"
-
-    If `object` already has more than one member with `key` (2.), the *first* one is assigned `value` and every
-    later member with the same key is removed -- so that a lookup, an iteration, and
-    [`materialize()`](../basic_json_view/materialize.md) of `object` afterward all agree on a single value for
-    `key`, the same way [`operator[]`](../basic_json_view/operator%5B%5D.md) already picks the first occurrence of a
-    duplicate key for reading. See the [Notes on duplicate keys](../basic_json_view/operator%5B%5D.md#notes) of
-    `operator[]`.
-
-Setting a member (2.) or an element (3., through 4.) of an array or object whose elements have not been edited
-before switches it from its parsed layout to a growable block holding links to its elements; a later
-[`push_back`](push_back.md) or `set` on the same container reuses that block, growing it (amortized constant time)
-only once it runs out of room. This never moves an element itself -- only where the container's *links* to its
-elements live -- so a view of an element stays valid, but any iterator already taken over the container is
-invalidated, since it was walking the old layout. See [Edits](index.md#edits) for what stays valid across an edit in
-general.
-
-The same switch happens, for the same reason, when overload 1. replaces a multi-node array/object value with a
-scalar: the *parent's* element sequence is what has to switch to links, not `target` itself, because the parent
-originally stepped over `target`'s whole subtree by its node count, which no longer applies once `target` is a
-one-node scalar.
-
-## Examples
-
-??? example "Example: (1)/(2)/(3)/(4) replace a value, set a member, assign an element, set via a JSON pointer"
-
-    The example below edits a small configuration document -- replacing a value, adding an object member, assigning
-    an array element, and reaching a field through a JSON pointer -- and shows what
-    [`dump()`](../basic_json_view/dump.md) preserves that is lost once the same edits are made on a `BasicJsonType`
-    value instead: the order object members were written in, and the exact spelling of a number that was never
-    touched.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__set.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__set.output"
-    ```
-
-## See also
-
- [push_back](push_back.md) - append to an array
- [insert](insert.md) - insert an element into an array
- [erase](erase.md) - remove an object member, an array element, or the value a JSON pointer refers to
- [root](root.md) - the view of the root value, the starting point of overload 4
- [`basic_json_view::dump`](../basic_json_view/dump.md) - serialize the document, keeping an untouched number's
-  spelling with `#!cpp number_format::source`
- [Edits](index.md#edits) - what an edit guarantees, for every overload
- [Editing a document](../../features/json_view.md#editing-a-document) - why editable documents keep the source
-  text's order and number spelling
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,144 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>at
-
-```cpp
-// (1)
-basic_json_view at(string_view_t key) const;
-basic_json_view at(const char* key) const;
-basic_json_view at(const string_t& key) const;
-
-// (2)
-basic_json_view at(size_type idx) const;
-template<typename IntegerType>
-basic_json_view at(IntegerType idx) const;
-
-// (3)
-basic_json_view at(const json_pointer& ptr) const;
-```
-
-1. Returns the value of the object member with key `key` -- the first one, should the key occur more than once (see
-   [Notes on duplicate keys](operator[].md#notes)).
-2. Returns the array element at index `idx`. The template accepts every integer type except `#!cpp bool` and
-   `#!cpp std::size_t` and forwards to the `size_type` overload, as for [`operator[]`](operator[].md); a negative
-   `idx` is out of range.
-3. Returns the value a JSON pointer `ptr` refers to, starting at this value.
-
-## Parameters
-
-`key` (in)
-:   object key of the element to access
-
-`idx` (in)
-:   index of the element to access
-
-`ptr` (in)
-:   JSON pointer to the element to access
-
-## Return value
-
-1. the value of the first member with key `key`
-2. the element at index `idx`
-3. the value `ptr` resolves to, starting at this value
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-1. The function can throw the following exceptions, both with the same message as the corresponding call to
-   [`BasicJsonType::at`](../basic_json/at.md):
-    - Throws [`type_error.304`](../../home/exceptions.md#jsonexceptiontype_error304) if the value is not an object.
-    - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if no member has key `key`.
-2. The function can throw the following exceptions, both with the same message as the corresponding call to
-   [`BasicJsonType::at`](../basic_json/at.md):
-    - Throws [`type_error.304`](../../home/exceptions.md#jsonexceptiontype_error304) if the value is not an array.
-    - Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if `#!cpp idx >= size()`.
-3. The function can throw the following exceptions, all with the same message as the corresponding call to
-   [`BasicJsonType::at`](../basic_json/at.md):
-    - Throws [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) if an array index in `ptr`
-      begins with `#!cpp '0'`.
-    - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in `ptr` is
-      not a number.
-    - Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if an array index in `ptr`
-      is out of range.
-    - Throws [`out_of_range.402`](../../home/exceptions.md#jsonexceptionout_of_range402) if a reference token is
-      `#!cpp "-"` at an array -- `at` never inserts an element, so `#!cpp "-"` is always invalid.
-    - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a reference token names
-      an object member that does not exist.
-    - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if `ptr` cannot be resolved
-      because a reference token is used on a primitive value.
-
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-1. Linear in the number of members: as for [`ordered_json`](../ordered_json.md), members are compared one after
-   another, in document order, stopping at the first match. Each comparison first checks the
-   key's length -- already known from the index, without reading the key bytes -- before comparing its content.
-   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
-   constant time on average.
-2. Linear in `idx`: elements are skipped one at a time from the first one, since they are not a fixed size in the
-   index (unlike `BasicJsonType`'s array, which is random-access).
-3. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level (as 1.) or the index into the array (as 2.).
-
-## Notes
-
-!!! warning "Duplicate keys: the first member wins"
-
-    If the source text repeats a key, this resolves to the *first* member with it, not to the last one that
-    [`materialize()`](materialize.md) and `parse()` keep. See the [Notes on duplicate keys](operator[].md#notes) of
-    `operator[]` and [Duplicate keys](../../features/json_view.md#duplicate-keys) for the reasons and for how to get
-    the last value.
-
-Unlike [`operator[]`](operator[].md), which returns a [discarded](is_discarded.md) view for a missing key or an
-out-of-range index, `at` always throws -- exactly as `BasicJsonType::at` does, and with the same messages, so
-existing error handling written against `BasicJsonType::at` keeps working unchanged when switched to a view. This
-also holds for overload 3: unlike [`operator[]`](operator[].md) with a JSON pointer, which returns a discarded view
-for a missing key or an out-of-range index, `at` throws for those too (`out_of_range.403`/`out_of_range.401`).
-
-## Examples
-
-??? example "Example: (1)/(2) access specified element with bounds checking"
-
-    The example below reads required fields out of a service configuration with `at`, and shows that the exceptions
-    it throws -- for a wrong type and for a missing key -- carry the same messages
-    [`BasicJsonType::at`](../basic_json/at.md) would produce for the same JSON text.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__at.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__at.output"
-    ```
-
-??? example "Example: (3) access specified element via JSON pointer with bounds checking"
-
-    The example below shows that `at` with a JSON pointer throws exactly the exceptions, with exactly the messages,
-    that [`BasicJsonType::at`](../basic_json/at.md) throws for the same pointer and the same document.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__at_json_pointer.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__at_json_pointer.output"
-    ```
-
-## See also
-
- [operator[]](operator[].md) - access specified element (returns a discarded view instead of throwing)
- [front](front.md), [back](back.md) - access the first or last element
- [`BasicJsonType::at`](../basic_json/at.md) - the corresponding function of `basic_json`
- [`json_pointer`](../json_pointer/index.md) - JSON pointer type used by overload 3
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,63 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>back
-
-```cpp
-basic_json_view back() const;
-```
-
-Returns the last element of an array, the last member value of an object, or the value itself if it is primitive
-(as for [`BasicJsonType::back()`](../basic_json/back.md), a primitive value is a range of one element).
-
-## Return value
-
-The last element or member value. For a primitive value (number, string, boolean), the value itself.
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-Throws [`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) if the view is
-[null](is_null.md) or [discarded](is_discarded.md), or if it is an empty array or object.
-
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-Linear in the size of the array or object: unlike [`front()`](front.md), which only ever looks at the first
-element, `back()` has to walk every element to find where they end, since elements are not a fixed size in the
-index.
-
-## Notes
-
-Unlike [`BasicJsonType::back()`](../basic_json/back.md), which has undefined behavior for an empty array or object,
-`back()` throws `invalid_iterator.214` for an empty array, an empty object, a null value, or a discarded view.
-
-## Examples
-
-??? example
-
-    The example below reads only the final status of a build log with `back()`. Even though `back()` is linear in
-    the number of events (unlike [`front()`](front.md), which is constant), it still avoids building a
-    `BasicJsonType` value for the events that are not needed.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__back.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__back.output"
-    ```
-
-## See also
-
- [front](front.md) - access the first element
- [`BasicJsonType::back`](../basic_json/back.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -8,9 +8,8 @@ Creates an invalid (discarded) view: [`type()`](type.md) is `#!cpp value_t::disc
 [`is_discarded()`](is_discarded.md) is `#!cpp true`.

 This is the only constructor a caller can use directly. Every other view is obtained from a
-[`basic_json_document`](../basic_json_document/index.md), via [`root()`](../basic_json_document/root.md) or by
-navigating into a container with [`operator[]`](operator[].md), [`at`](at.md), [`front`](front.md), [`back`](back.md),
-[`find`](find.md), or iteration.
+[`basic_json_document`](../basic_json_document/index.md), via [`root()`](../basic_json_document/root.md) or (once
+element access is added) from navigating into a container.

 ## Exception safety

@@ -1,65 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>begin
-
-```cpp
-iterator begin() const noexcept;
-```
-
-Returns an iterator to the first element of an array, or the first member value of an object, in **document order**
-- the order the values appear in the source text, not sorted by key. A primitive value iterates as a range of one
-element (itself), and a `#!json null` value or a [discarded](is_discarded.md) view iterates as an empty range.
-
-## Return value
-
-Iterator to the first element.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-For an object, iteration visits **every** member, including all occurrences of a duplicate key -- unlike
-[`operator[]`](operator[].md), [`at`](at.md), [`find`](find.md), and [`contains`](contains.md),
-which all resolve to the *first* member with a given key. See the
-[Notes on duplicate keys](operator[].md#notes) of `operator[]`.
-
-Because objects are iterated in document order rather than sorted by key, the order seen here can differ from what
-iterating the [`materialize()`](materialize.md)d `BasicJsonType` value would produce: a `#!cpp basic_json` object
-(`std::map`-backed by default) sorts its keys, while a view does not.
-
-An `ordered_json` value also keeps document order, but it keeps only one entry per key: as `parse()` does, it keeps the
-*last* value, at the position of the key's *first* occurrence. The view, in contrast, visits every member, including
-the duplicates.
-
-## Examples
-
-??? example
-
-    The example below iterates a log record's members with `begin()`/[`end()`](end.md) and prints them in the order
-    they were written. Materializing the record into a `BasicJsonType` object and iterating that would instead print
-    the members sorted by key.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__begin.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__begin.output"
-    ```
-
-## See also
-
- [end](end.md) - returns an iterator to one past the last element
- [cbegin](cbegin.md) - returns a const iterator to the first element
- [items](items.md) - access iterator member functions in range-based for
- [`BasicJsonType::begin`](../basic_json/begin.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,49 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>cbegin
-
-```cpp
-iterator cbegin() const noexcept;
-```
-
-Returns an iterator to the first element, in [document order](begin.md). Equivalent to [`begin()`](begin.md): a view
-is always read-only, so `#!cpp const_iterator` and `#!cpp iterator` are the same type, and `cbegin()` exists only so
-that generic code that expects a `cbegin()`/`cend()` pair works with a view too.
-
-## Return value
-
-Iterator to the first element; identical to what [`begin()`](begin.md) returns.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below sums many measurements with `std::accumulate`, using `cbegin()`/[`cend()`](cend.md) as the
-    range -- the same way it would for any standard container -- without ever materializing the whole array into a
-    `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__cbegin.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__cbegin.output"
-    ```
-
-## See also
-
- [begin](begin.md) - returns an iterator to the first element
- [cend](cend.md) - returns a const iterator to one past the last element
- [`BasicJsonType::cbegin`](../basic_json/cbegin.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,49 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>cend
-
-```cpp
-iterator cend() const noexcept;
-```
-
-Returns an iterator to one past the last element, in [document order](begin.md). Equivalent to [`end()`](end.md): a
-view is always read-only, so `#!cpp const_iterator` and `#!cpp iterator` are the same type, and `cend()` exists only
-so that generic code that expects a `cbegin()`/`cend()` pair works with a view too.
-
-## Return value
-
-Iterator one past the last element; identical to what [`end()`](end.md) returns.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below checks that every record of a batch is an object with `std::all_of`, using
-    [`cbegin()`](cbegin.md)/`cend()` as the range -- the same way it would for any standard container -- before
-    materializing any record of the batch.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__cend.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__cend.output"
-    ```
-
-## See also
-
- [end](end.md) - returns an iterator to one past the last element
- [cbegin](cbegin.md) - returns a const iterator to the first element
- [`BasicJsonType::cend`](../basic_json/cend.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,111 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>contains
-
-```cpp
-// (1)
-bool contains(string_view_t key) const;
-bool contains(const char* key) const;
-bool contains(const string_t& key) const;
-
-// (2)
-bool contains(const json_pointer& ptr) const;
-```
-
-1. Checks whether the value is an object with a member with key `key`.
-2. Checks whether a JSON pointer `ptr` can be resolved, starting at this value.
-
-## Parameters
-
-`key` (in)
-:   key value to check its existence
-
-`ptr` (in)
-:   JSON pointer to check its existence
-
-## Return value
-
-1. `#!cpp true` if the value is an object and has a member with key `key`, `#!cpp false` otherwise
-2. `#!cpp true` if `ptr` can be resolved to a value starting at this view, `#!cpp false` otherwise
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-1. Linear in the number of members: as for [`ordered_json`](../ordered_json.md), members are compared one after
-   another, in document order, stopping at the first match. Each comparison first checks the
-   key's length -- already known from the index, without reading the key bytes -- before comparing its content.
-   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
-   constant time on average.
-2. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level or the index into the array -- as for [`operator[]`](operator[].md#complexity) and
-   [`at`](at.md#complexity) with a JSON pointer.
-
-## Notes
-
-!!! warning "Duplicate keys: the first member wins"
-
-    If the source text repeats a key, this resolves to the *first* member with it, not to the last one that
-    [`materialize()`](materialize.md) and `parse()` keep. See the [Notes on duplicate keys](operator[].md#notes) of
-    `operator[]` and [Duplicate keys](../../features/json_view.md#duplicate-keys) for the reasons and for how to get
-    the last value.
-
-Overload 1 always returns `#!cpp false` when the value is not an object -- including a [discarded](is_discarded.md)
-view.
-
-!!! info "Postconditions"
-
-    If `#!cpp v.contains(key)` returns `#!cpp true`, then `#!cpp v[key]` is not [discarded](is_discarded.md) and
-    `#!cpp v.at(key)` does not throw. If
-    `#!cpp v.contains(ptr)` returns `#!cpp true`, then `#!cpp v[ptr]` is not discarded and `#!cpp v.at(ptr)` does not
-    throw.
-
-!!! info "Overload 2 never throws"
-
-    Unlike [`BasicJsonType::contains(const json_pointer&)`](../basic_json/contains.md), which can throw for certain
-    malformed pointers (for instance an empty array-index reference token), overload 2 never throws: a missing key,
-    an out-of-range or malformed array index, a `#!cpp "-"` index, or a reference token used on a primitive all
-    simply make it return `#!cpp false`.
-
-## Examples
-
-??? example "Example: (1) check with key"
-
-    The example below counts how many of a batch of records carry an optional `retry_of` field, using `contains()`
-    to check without ever materializing a single record of the batch.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__contains.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__contains.output"
-    ```
-
-??? example "Example: (2) check with JSON pointer"
-
-    The example below checks an optional, nested field with a JSON pointer, and shows two pointers that
-    `#!cpp contains()` resolves to `#!cpp false` without throwing.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__contains_json_pointer.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__contains_json_pointer.output"
-    ```
-
-## See also
-
- [find](find.md) - find a value in an object
- [count](count.md) - returns the number of occurrences of a key
- [at](at.md), [operator[]](operator[].md) - resolve a JSON pointer and throw, or return a discarded view
- [`BasicJsonType::contains`](../basic_json/contains.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,71 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>count
-
-```cpp
-size_type count(string_view_t key) const;
-size_type count(const char* key) const;
-size_type count(const string_t& key) const;
-```
-
-Returns the number of members with key `key` if the value is an object, `#!cpp 0` otherwise. Members with a repeated
-key are all counted.
-
-## Parameters
-
-`key` (in)
-:   key value of the element to count
-
-## Return value
-
-the number of members of the object with key `key` (duplicates included), or `#!cpp 0` if the value is not an object
-or has no such member.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Linear in the number of members: unlike the lookup functions, `count()` does not stop at the first match, because it
-has to count every member with the key. Members are compared one after another, in document order. Each comparison
-first checks the key's length -- already known from the index, without reading the key bytes -- before comparing its
-content. The hash index of the keys of objects with 128 or more members does not help here, since every member
-is visited.
-
-## Notes
-
-This method always returns `#!cpp 0` when the value is not an object -- including a [discarded](is_discarded.md)
-view.
-
-If the source text repeats a key, `count()` returns more than `#!cpp 1` for it, even though the
-[materialized](materialize.md) value (like the result of `parse()`) would have only one member with that key. Hence
-`#!cpp count(key) > 1` detects duplicate keys. This is unlike the lookup functions
-([`operator[]`](operator[].md), [`at`](at.md), [`find`](find.md), [`contains`](contains.md)), which resolve to the
-*first* member; see the [Notes on duplicate keys](operator[].md#notes) of `operator[]`.
-
-## Examples
-
-??? example
-
-    The example below validates that every transaction of a batch carries exactly one `amount` field, using
-    `count()` before deciding whether to materialize a transaction at all. It reports a transaction with no `amount`
-    field and one with a duplicated `amount` field.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__count.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__count.output"
-    ```
-
-## See also
-
- [find](find.md) - find a value in an object
- [contains](contains.md) - checks whether a key exists
- [`BasicJsonType::count`](../basic_json/count.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,104 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>dump
-
-```cpp
-string_t dump(const int indent = -1,
-              const char indent_char = ' ',
-              const bool ensure_ascii = false,
-              const number_format numbers = number_format::shortest) const;
-```
-
-Serializes this value (and its subtree) directly from the flat index, without ever building a `BasicJsonType` value
-first. With the default `#!cpp numbers == number_format::shortest`, the result is the same string
-[`BasicJsonType::dump`](../basic_json/dump.md) would produce for the value
-[`BasicJsonType::parse()`](../basic_json/parse.md) builds from the same source text, called with the same `indent`,
-`indent_char`, and `ensure_ascii` -- except that members of an object appear in document order rather than sorted by
-key, and *every* occurrence of a repeated key is written rather than only the last one (see
-[Notes on duplicate keys](operator[].md#notes)). For a `json_view` (whose `BasicJsonType` is not ordered), this means
-`dump()` can print an object's members in a different order than [`materialize()`](materialize.md)`.dump()` of the
-same subtree.
-
-## Parameters
-
-`indent` (in)
-:   If `indent` is nonnegative, array elements and object members are pretty-printed with that indent level. An
-    indent level of `0` only inserts newlines. `-1` (the default) selects the most compact representation.
-
-`indent_char` (in)
-:   The character used for indentation if `indent` is greater than `0`. The default is ` ` (space).
-
-`ensure_ascii` (in)
-:   If `ensure_ascii` is `#!cpp true`, all non-ASCII characters in the output are escaped with `\uXXXX` sequences, and
-    the result consists of ASCII characters only.
-
-`numbers` (in)
-:   how to write numbers, see [`number_format`](number_format.md): `shortest` (the default) writes them the way
-    [`BasicJsonType::dump`](../basic_json/dump.md) would; `source` copies every number exactly as it appears in the
-    source text.
-
-## Return value
-
-string containing the serialization of this value, or `#!cpp "<discarded>"` if the view is
-[discarded](is_discarded.md).
-
-## Exception safety
-
-Strong exception safety: if an exception is thrown, there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc` if allocating the output string fails. Unlike
-[`BasicJsonType::dump`](../basic_json/dump.md), there is no `error_handler` parameter and no
-[`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316): the view only ever holds text the parser
-already validated as UTF-8, so there is nothing to replace or ignore.
-
-## Complexity
-
-Linear in the size of the output text.
-
-## Notes
-
-The walk over the subtree is iterative, so the nesting depth it can write is limited by available memory only, not by
-the call stack -- as for [`materialize()`](materialize.md).
-
-Strings are escaped by the same rules as [`BasicJsonType::dump`](../basic_json/dump.md).
-
-With `#!cpp numbers == number_format::shortest`, floats are written with the library's shortest round-trip conversion,
-exactly as [`BasicJsonType::dump`](../basic_json/dump.md) would (e.g. `#!cpp 1.5`, `#!cpp 100.0`, `#!cpp 1e+100`), and
-integers are copied from the source text -- already canonical in JSON, so this matches their shortest form too --
-except that `#!cpp -0` is written as `#!cpp 0`, the way [`BasicJsonType::parse()`](../basic_json/parse.md) reads it.
-
-`#!cpp number_format::source` copies every number exactly as written in the source text instead, with no exception
-for `#!cpp -0` -- `#!cpp 1.50`, `#!cpp 1E2`, `#!cpp -0.0`, `#!cpp -0`, or all digits of an integer literal with more
-digits than any number type holds (such a literal is itself classified as a float, see
-[What is different](../../features/json_view.md#what-is-different)) -- something `BasicJsonType` cannot do, since
-parsing already reduces every number to its parsed value.
-
-## Examples
-
-??? example
-
-    The example below forwards a single record out of a larger batch, and re-serializes a configuration file, both
-    without ever building a `BasicJsonType` value for the surrounding array or for the parts of it that were not
-    needed. It also shows that [`materialize()`](materialize.md)`.dump()` of the configuration sorts its keys, where
-    `dump()` on the view keeps the order they appear in the source text.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__dump.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__dump.output"
-    ```
-
-## See also
-
- [`number_format`](number_format.md) - how `dump()` writes numbers
- [operator<<](operator_ltlt.md) - serialize this value to a stream
- [materialize](materialize.md) - build a `BasicJsonType` value, e.g. to use `BasicJsonType::dump`'s `error_handler`
- [`BasicJsonType::dump`](../basic_json/dump.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,53 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>end
-
-```cpp
-iterator end() const noexcept;
-```
-
-Returns an iterator to one past the last element of an array, one past the last member value of an object, in
-**document order** -- see [`begin()`](begin.md). A primitive value iterates as a range of one element (itself), and a
-`#!json null` value or a [discarded](is_discarded.md) view iterates as an empty range (`#!cpp begin() == end()`).
-
-## Return value
-
-Iterator one past the last element.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`#!cpp iterator` is a forward iterator: unlike `BasicJsonType::iterator`, it cannot be decremented, so there is no
-way to reach the last element by stepping back from `end()`. Use [`back()`](back.md) instead.
-
-## Examples
-
-??? example
-
-    The example below scans a (possibly large) array of readings for the first one over a threshold, stopping the
-    loop at `end()` as soon as one is found. Only the matching reading, if any, is ever materialized.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__end.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__end.output"
-    ```
-
-## See also
-
- [begin](begin.md) - returns an iterator to the first element
- [cend](cend.md) - returns a const iterator to one past the last element
- [`BasicJsonType::end`](../basic_json/end.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,72 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>find
-
-```cpp
-iterator find(string_view_t key) const;
-iterator find(const char* key) const;
-iterator find(const string_t& key) const;
-```
-
-Finds a member with key `key` -- the first one, should the key occur more than once (see
-[Notes on duplicate keys](operator[].md#notes)). If the value is not an object, or no member has this key,
-[`end()`](end.md) is returned.
-
-## Parameters
-
-`key` (in)
-:   key value of the element to search for
-
-## Return value
-
-An iterator to the member with key `key`, or [`end()`](end.md) if there is none or the value is not an object.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Linear in the number of members: as for [`ordered_json`](../ordered_json.md), members are compared one after another,
-in document order, stopping at the first match. Each comparison first checks the key's length
-- already known from the index, without reading the key bytes -- before comparing its content.
-Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
-constant time on average.
-
-## Notes
-
-!!! warning "Duplicate keys: the first member wins"
-
-    If the source text repeats a key, this resolves to the *first* member with it, not to the last one that
-    [`materialize()`](materialize.md) and `parse()` keep. See the [Notes on duplicate keys](operator[].md#notes) of
-    `operator[]` and [Duplicate keys](../../features/json_view.md#duplicate-keys) for the reasons and for how to get
-    the last value.
-
-Unlike [`BasicJsonType::find`](../basic_json/find.md), which always returns `#!cpp end()` for a non-object type, this
-also does so for a [discarded](is_discarded.md) view -- there is no separate "invalid" iterator to return.
-
-## Examples
-
-??? example
-
-    The example below scans a batch of events for those that carry an optional `user_id` field, using `find()`
-    instead of [`operator[]`](operator[].md) (which would throw for the events that are not objects at all) or
-    [`contains()`](contains.md) followed by a second lookup. Events without a match are never materialized.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__find.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__find.output"
-    ```
-
-## See also
-
- [count](count.md) - returns the number of occurrences of a key
- [contains](contains.md) - checks whether a key exists
- [`BasicJsonType::find`](../basic_json/find.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,61 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>front
-
-```cpp
-basic_json_view front() const;
-```
-
-Returns the first element of an array, the first member value of an object, or the value itself if it is primitive
-(as for [`BasicJsonType::front()`](../basic_json/front.md), a primitive value is a range of one element).
-
-## Return value
-
-The first element or member value. For a primitive value (number, string, boolean), the value itself.
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-Throws [`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) if the view is
-[null](is_null.md) or [discarded](is_discarded.md), or if it is an empty array or object.
-
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-Unlike [`BasicJsonType::front()`](../basic_json/front.md), which has undefined behavior for an empty array or
-object, `front()` throws `invalid_iterator.214` for an empty array, an empty object, a null value, or a discarded
-view.
-
-## Examples
-
-??? example
-
-    The example below reads only the earliest entry of a build log with `front()`, without materializing the rest
-    of the (possibly long) log.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__front.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__front.output"
-    ```
-
-## See also
-
- [back](back.md) - access the last element
- [`BasicJsonType::front`](../basic_json/front.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,133 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>get
-
-```cpp
-template<typename T>
-T get() const;
-```
-
-Converts the value to `T`.
-
-For the types below, the conversion works directly on the flat index -- no `BasicJsonType` value is built for it:
-
- `#!cpp bool`
- arithmetic types other than `#!cpp bool` (for a boolean, `#!cpp 0`/`#!cpp 1`, exactly as for
-  [`BasicJsonType::get<T>()`](../basic_json/get.md))
- `#!cpp std::nullptr_t`
- `#!cpp std::basic_string<char, Traits, Alloc>` (including `string_t`) -- a copy of the string
- [`string_view_t`](index.md#member-types) -- **no copy**: the returned view points into the document's
-  [`source()`](../basic_json_document/source.md) text, or, for a string that contains escape sequences, into the
-  document's own buffer of decoded strings (see [`get_string()`](get_string.md))
- `BasicJsonType` -- equivalent to [`materialize()`](materialize.md)
- `basic_json_view` -- returns `#!cpp *this`
- `#!cpp std::vector<U, A>` -- from an array, element by element, each converted with `#!cpp get<U>()`; `#!cpp
-  std::vector<basic_json_view>` keeps a view of every element instead of a value
- `#!cpp std::map<K, V, C, A>` and `#!cpp std::unordered_map<K, V, H, E, A>`, if `K` is constructible from a `#!cpp
-  (const char*, std::size_t)` pair -- from an object, member by member, each value converted with `#!cpp get<V>()`; with a repeated
-  key, the *last* value is kept, as [`BasicJsonType::parse()`](../basic_json/parse.md) (and
-  [`materialize()`](materialize.md)) does; `#!cpp std::map<std::string, basic_json_view>` keeps views of the members
-  instead of values
-
-Every other `T` -- `#!cpp std::list`, `#!cpp std::pair`, `#!cpp std::array`, enumerations, user types with a
-`from_json()`, ... -- is converted by `#!cpp materialize().get<T>()`: the subtree is built into a real `BasicJsonType`
-value first (as [`BasicJsonType::parse()`](../basic_json/parse.md) would), and converted from there exactly as
-[`BasicJsonType::get<T>()`](../basic_json/get.md) would convert it.
-
-## Template parameters
-
-`T`
-:   the type to convert the value to
-
-## Return value
-
-the value, converted to `T`
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
- For the directly-converted types listed above (other than `BasicJsonType` and `basic_json_view`, which never
-  throw): throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value's type does not
-  match `T` -- the same exception, with the same message, that [`BasicJsonType::get<T>()`](../basic_json/get.md)
-  throws for the same JSON type and `T`.
- For `#!cpp std::vector<U, A>`: throws `type_error.302` if the value is not an array; otherwise, whatever converting
-  an element to `U` throws.
- For `#!cpp std::map`/`#!cpp std::unordered_map`: throws `type_error.302` if the value is not an object; otherwise,
-  whatever converting a member to the mapped type throws.
- For every other `T`: whatever [`materialize().get<T>()`](../basic_json/get.md) throws -- typically `type_error.302`,
-  or whatever a user-provided `from_json()` throws.
-
-None of the exceptions thrown directly by this function (the first three bullets above) carry a
-[`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no `BasicJsonType` value to point at. An
-exception thrown while converting through `materialize()` (the last bullet) is different: it is thrown by a real
-`BasicJsonType` value, so it **does** carry a `JSON_DIAGNOSTICS` path if `BasicJsonType` was built with it enabled.
-That path is relative to the root of the view's subtree, because `materialize()` builds only the subtree (with parent
-pointers): it is empty if the failing value is the subtree's root itself, and it never is the path within the whole
-document.
-
-## Complexity
-
- `#!cpp bool`, arithmetic types, `#!cpp std::nullptr_t`, [`string_view_t`](index.md#member-types), `basic_json_view`:
-  constant.
- `#!cpp std::basic_string<char, Traits, Alloc>`: constant, plus one allocation and a copy of the string's bytes.
- `BasicJsonType`: linear in the size of the subtree, see [`materialize()`](materialize.md).
- `#!cpp std::vector<U, A>`: linear in the number of elements, times the complexity of converting one element to `U`.
- `#!cpp std::map`/`#!cpp std::unordered_map`: linear in the number of members for walking them, plus the container's
-  own insertion cost per member (logarithmic for `#!cpp std::map`, amortized constant for `#!cpp
-  std::unordered_map`), times the complexity of converting one member to the mapped type.
- every other `T`: the cost of [`materialize()`](materialize.md) and of destroying the `BasicJsonType` value
-  afterwards, plus that of [`BasicJsonType::get<T>()`](../basic_json/get.md).
-
-## Notes
-
-!!! info "Floating-point values"
-
-    A floating-point `T` is converted from the same digits the lexer would see during `#!cpp BasicJsonType::parse()`,
-    using the same conversion, so the result is bit-for-bit identical to `#!cpp BasicJsonType::parse(text).get<T>()`
-    for the same source text.
-
-!!! info "Duplicate keys"
-
-    `#!cpp std::map`/`#!cpp std::unordered_map` conversions keep the *last* value of a repeated key, like
-    [`materialize()`](materialize.md) and [`BasicJsonType::parse()`](../basic_json/parse.md) do. This is the opposite
-    of [`operator[]`](operator[].md)/[`at`](at.md)/[`find`](find.md)/[`contains`](contains.md), which resolve to the
-    *first* occurrence (see the [Notes on duplicate keys](operator[].md#notes)).
-
-!!! info "No pointers, references, or implicit conversion"
-
-    Unlike `BasicJsonType`, `basic_json_view` has no stored value anywhere to hand out a pointer or a reference to, so
-    it provides neither `#!cpp get_ptr()`, `#!cpp get_ref()`, nor `#!cpp operator ValueType()`.
-    [`get_string()`](get_string.md) (equivalently, `#!cpp get<string_view_t>()`) is the zero-copy alternative for
-    strings.
-
-## Examples
-
-??? example
-
-    The example below reads typed fields straight into C++ variables, collects a view of every array element with
-    `#!cpp get<std::vector<basic_json_view>>()` instead of a value, and converts a nested object into a user type
-    through its `from_json()` -- which runs on a `BasicJsonType` value `materialize()` builds for just that one
-    member.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__get.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__get.output"
-    ```
-
-## See also
-
- [get_to](get_to.md) - convert and write into a passed value
- [get_string](get_string.md) - the string, without a copy
- [number_token](number_token.md) - a number's token text, without a copy
- [materialize](materialize.md) - build the `BasicJsonType` value of this subtree
- [`BasicJsonType::get`](../basic_json/get.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,76 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>get_string
-
-```cpp
-string_view_t get_string() const;
-```
-
-Returns the string value as a [`string_view_t`](index.md#member-types), without copying it.
-
-## Return value
-
-The string, as a [`string_view_t`](index.md#member-types) that points either into the document's
-[`source()`](../basic_json_document/source.md) text (a string with no escape sequences), or into the document's own
-buffer of decoded strings (a string that contains escape sequences, such as `#!json "\n"` or `#!json "\u00e9"`, which
-had to be decoded once when the document was parsed).
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value is not a string; example:
-`"type must be string, but is array"`.
-
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`basic_json_view` has no `BasicJsonType` value stored anywhere, so unlike `BasicJsonType`, it has no `get_ref()` to
-hand out a reference to a stored `string_t`. `get_string()` (equivalently, [`get<string_view_t>()`](get.md)) is the
-zero-copy alternative: [`BasicJsonType::get_ref<const string_t&>()`](../basic_json/get_ref.md) is its closest
-counterpart, except that it returns a view instead of a reference to a value that must already exist.
-
-`get_string()` borrows the string: nothing is copied, whereas [`get<std::string>()`](get.md) copies it. For a borrowed
-document, the returned [`string_view_t`](index.md#member-types) is valid as long as the caller's buffer; for an owned
-one, as long as the document.
-
-The returned [`string_view_t`](index.md#member-types) is valid exactly as long as the view that produced it -- see the
-[validity rules](index.md) of `basic_json_view` -- and, for a string with no escapes, for as long as the document's
-source text, which for a borrowed document must remain valid **and unmodified** for as long as the document exists,
-since floating-point values and unescaped strings are read from the source lazily.
-
-## Examples
-
-??? example
-
-    The example below pulls one field out of a JSON text that stands in for a large API response, and shows that no
-    `#!cpp std::string` was allocated for it: the returned view still points inside the original buffer. A field that
-    contains an escape sequence cannot point into the original text -- it was decoded once into the document's own
-    buffer instead -- but still avoids a per-field allocation.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__get_string.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__get_string.output"
-    ```
-
-## See also
-
- [get](get.md) - convert the value to a given type (`#!cpp get<string_view_t>()` is equivalent to this function)
- [number_token](number_token.md) - a number's token text, without a copy
- [`BasicJsonType::get_ref`](../basic_json/get_ref.md) - the closest counterpart of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,80 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>get_to
-
-```cpp
-template<typename T>
-T& get_to(T& v) const;
-```
-
-Converts the value to `T` and stores it in `v`, in one of two ways:
-
- For the types that [`get<T>()`](get.md) converts directly -- arithmetic types, `#!cpp bool`,
-  `#!cpp std::nullptr_t`, [`string_view_t`](index.md#member-types), `#!cpp std::basic_string`, `BasicJsonType`,
-  `basic_json_view`, `#!cpp std::vector`, and `#!cpp std::map`/`#!cpp std::unordered_map` with string keys -- `v` is
-  assigned: `#!cpp v = get<T>()`.
- For every other type, the subtree is built into a `BasicJsonType` value and `#!cpp materialize().get_to(v)` is
-  called, i.e. `from_json()` is invoked with the existing `v`, exactly as
-  [`BasicJsonType::get_to()`](../basic_json/get_to.md) does.
-
-## Template parameters
-
-`T`
-:   the type to convert the value to
-
-## Parameters
-
-`v` (out)
-:   the variable to store the converted value in
-
-## Return value
-
-`v`, allowing calls to chain
-
-## Exception safety
-
- For the directly converted types: strong exception safety. If an exception is thrown, `v` is not modified.
- For every other type: as for [`BasicJsonType::get_to()`](../basic_json/get_to.md). `materialize()` throws before `v`
-  is touched, but a `from_json()` that throws may leave `v` partly modified.
-
-## Exceptions
-
- For the directly converted types: whatever [`get<T>()`](get.md) throws for the same value and `T`.
- For every other type: whatever [`materialize()`](materialize.md) and
-  [`BasicJsonType::get_to()`](../basic_json/get_to.md) throw.
-
-## Complexity
-
- For the directly converted types: whatever [`get<T>()`](get.md) has for the same `T`.
- For every other type: that of [`materialize()`](materialize.md), plus that of
-  [`BasicJsonType::get_to()`](../basic_json/get_to.md).
-
-## Notes
-
-The difference between the two ways matters for a `from_json()` that sets only the fields present in the JSON: since
-it runs on the existing `v`, the other fields of `v` keep their values, whereas assigning `get<T>()` would replace
-them with those of a default-constructed `T`.
-
-## Examples
-
-??? example
-
-    The example below reads several fields of a service configuration directly into existing variables, then uses
-    the returned reference to fold the `#!cpp host`/`#!cpp port` pair into a single string in the same expression.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__get_to.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__get_to.output"
-    ```
-
-## See also
-
- [get](get.md) - convert the value to a given type
- [`BasicJsonType::get_to`](../basic_json/get_to.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>

 ```cpp
-template<typename BasicJsonType, bool Editable = false>
+template<typename BasicJsonType>
 class basic_json_view;
 ```

@@ -14,34 +14,14 @@ to the document and a pointer into its index), trivially copyable. A view is val
 - the document has not been re-parsed with [`read()`](../basic_json_document/read.md) (or
  [`parse()`](../basic_json_document/parse.md) into it) or shrunk with
  [`shrink_to_fit()`](../basic_json_document/shrink_to_fit.md) since the view was taken, and
- if the document borrows its source text, that text is still alive and unmodified (floating-point values and
-  unescaped strings are read from it lazily).
+- if the document borrows its source text, that text is still alive.

 Moving the document itself does not invalidate its views: the index is heap-allocated independently of the
 `basic_json_document` object.

-`basic_json_view` provides the read-only part of the `BasicJsonType` interface:
-
- the type-inspection functions
- element access
- lookup
- iteration
- conversion: [`get<T>()`](get.md), [`get_string()`](get_string.md), [`number_token()`](number_token.md), and
-  [`materialize()`](materialize.md) to build the `BasicJsonType` value of a subtree on demand
- comparison: [`operator==`](operator_eq.md) and [`operator!=`](operator_ne.md) compare two views, or a view and a
-  `BasicJsonType` value, without ever building a `BasicJsonType` value for a view; no ordering comparison
-  (`#!cpp operator<`) is provided
-
-[`operator[]`](operator%5B%5D.md), [`at`](at.md), [`contains`](contains.md), and [`value`](value.md) also accept a
-[`json_pointer`](../json_pointer/index.md). Unlike `basic_json`, there are no implicit conversion operators (no
-`#!cpp operator ValueType()`), and no `#!cpp get_ptr()` or `#!cpp get_ref()`; see [`get`](get.md).
-
-`basic_json_view` itself is always read-only -- it never has a `set` or `push_back` of its own. A view of an
-**editable** document (`#!cpp Editable == true`) sees every edit made through
-[`basic_json_document::set`](../basic_json_document/set.md) and
-[`basic_json_document::push_back`](../basic_json_document/push_back.md): once a value is changed, every view that
-still refers to it -- including ones taken before the change -- reads the new value. See
-[Edits](../basic_json_document/index.md#edits).
+`basic_json_view` provides the read-only part of the `BasicJsonType` interface: the type-inspection functions, and
+[`materialize()`](materialize.md) to build the `BasicJsonType` value of a subtree on demand. It does not (yet) provide
+element access, iteration, `get<T>()`, JSON Pointer support, `dump()`, or comparison.

 ## Template parameters

@@ -49,17 +29,10 @@ still refers to it -- including ones taken before the change -- reads the new va
 :   a specialization of [`basic_json`](../basic_json/index.md), matching the
    [`basic_json_document`](../basic_json_document/index.md) the view was taken from.

-`Editable`
-:   whether the view is of an editable document, matching the [`basic_json_document`](../basic_json_document/index.md)
-    it was taken from (optional, `#!cpp false` by default). See [Edits](../basic_json_document/index.md#edits).
-
 ## Specializations

 - [**json_view**](../json_view.md) - views of a [`json_document`](../json_document.md)
 - [**ordered_json_view**](../ordered_json_view.md) - views of an [`ordered_json_document`](../ordered_json_document.md)
- [**json_editable_view**](../json_editable_view.md) - views of a [`json_editable_document`](../json_editable_document.md)
- [**ordered_json_editable_view**](../ordered_json_editable_view.md) - views of an
-  [`ordered_json_editable_document`](../ordered_json_editable_document.md)

 ## Member types

@@ -68,9 +41,6 @@ still refers to it -- including ones taken before the change -- reads the new va
  member types of `BasicJsonType`
 - **size_type** - `#!cpp std::size_t`
 - **string_view_t** - `#!cpp std::string_view` on C++17 and newer, a minimal internal substitute otherwise
- **iterator**, **const_iterator** - a forward iterator over the elements of an array or the member values of an
-  object, in document order; both names refer to the same type, since a view is always read-only
- [**number_format**](number_format.md) - how [`dump()`](dump.md) writes numbers

 ## Member functions

@@ -79,7 +49,6 @@ still refers to it -- including ones taken before the change -- reads the new va
 ### Object inspection

 - [**type**](type.md) - return the type of the value
- [**type_name**](type_name.md) - return the type as string
 - [**is_null**](is_null.md) - return whether the value is null
 - [**is_boolean**](is_boolean.md) - return whether the value is a boolean
 - [**is_number**](is_number.md) - return whether the value is a number
@@ -94,28 +63,6 @@ still refers to it -- including ones taken before the change -- reads the new va
 - [**is_structured**](is_structured.md) - return whether the type is structured
 - [**is_discarded**](is_discarded.md) - return whether the view is invalid

-### Element access
-
- [**at**](at.md) - access specified element with bounds checking
- [**operator[]**](operator[].md) - access specified element
- [**value**](value.md) - access specified element with default value
- [**front**](front.md) - access the first element
- [**back**](back.md) - access the last element
-
-### Lookup
-
- [**find**](find.md) - find an element in an object
- [**count**](count.md) - returns the number of occurrences of a key in an object
- [**contains**](contains.md) - check the existence of an element in an object
-
-### Iterators
-
- [**begin**](begin.md) - returns an iterator to the first element
- [**cbegin**](cbegin.md) - returns a const iterator to the first element
- [**end**](end.md) - returns an iterator to one past the last element
- [**cend**](cend.md) - returns a const iterator to one past the last element
- [**items**](items.md) - wrapper to access iterator member functions in range-based for
-
 ### Capacity

 - [**size**](size.md) - return the number of elements
@@ -123,22 +70,8 @@ still refers to it -- including ones taken before the change -- reads the new va

 ### Conversion

- [**get**](get.md) - get a value
- [**get_to**](get_to.md) - get a value and write it to a destination
- [**get_string**](get_string.md) - get a string value without a copy
- [**number_token**](number_token.md) - get a number's token text without a copy
 - [**materialize**](materialize.md) - build the `BasicJsonType` value of this subtree

-### Comparison
-
- [**operator==**](operator_eq.md) - comparison: equal
- [**operator!=**](operator_ne.md) - comparison: not equal
-
-### Serialization
-
- [**dump**](dump.md) - serialize to a JSON-formatted string
- [**operator<<**](operator_ltlt.md) - serialize to stream
-
 ### Source access

 - [**source_offset**](source_offset.md) - byte offset of this value in the document's source text
@@ -9,10 +9,6 @@ view (see [(constructor)](basic_json_view.md)), and for [`root()`](../basic_json
 that is itself [discarded](../basic_json_document/is_discarded.md) -- in particular, the root of a failed
 [`parse()`](../basic_json_document/parse.md) with `allow_exceptions` set to `#!cpp false`.

-A discarded view is also what [`operator[]`](operator[].md) returns for a missing key, an index out of range, or a
-JSON pointer that cannot be resolved, and for any access on a view that is itself discarded (so a chain such as
-`#!cpp v["a"]["b"]` is safe). [`at`](at.md) throws instead.
-
 ## Return value

 `#!cpp true` if the view or its document is discarded, `#!cpp false` otherwise.
@@ -50,7 +46,6 @@ A `basic_json_view` is not convertible to `#!cpp bool`: such a conversion would

 ## See also

- [operator[]](operator[].md) - access specified element; yields a discarded view where an element is missing
 - [(constructor)](basic_json_view.md) - the default constructor creates a discarded view
 - [is_discarded (basic_json_document)](../basic_json_document/is_discarded.md) - return whether the last parse failed
 - [`BasicJsonType::is_discarded`](../basic_json/is_discarded.md) - the corresponding function of `basic_json`
@@ -1,86 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>items
-
-```cpp
-/* unspecified */ items() const noexcept;
-```
-
-Returns a range of items -- (key, value) pairs -- for use in range-based for loops. An item's `#!cpp key()` is a
-`#!cpp string_view_t` (for an array element, its index converted to a string, as for
-[`BasicJsonType::items()`](../basic_json/items.md)), and its `#!cpp value()` is a `basic_json_view` of the element.
-
-The returned type is not part of the public API and may change between versions; use a range-based for loop (see the
-example), or `#!cpp decltype(v.items())` if you need to name it.
-
-```cpp
-for (const auto& item : v.items())
-{
-    std::cout << "key: " << item.key() << ", value: " << item.value() << '\n';
-}
-```
-
-On C++17, `item` also supports [structured bindings](https://en.cppreference.com/w/cpp/language/structured_binding):
-
-```cpp
-for (const auto [key, value] : v.items())
-{
-    std::cout << "key: " << key << ", value: " << value << '\n';
-}
-```
-
-Note the `#!cpp const auto` (by value), not `#!cpp const auto&`: unlike `BasicJsonType::items()`, whose elements are
-references into an existing object, a view's `item` is produced on the fly for each step of the iteration, so there
-is nothing for a reference to bind to.
-
-## Return value
-
-A range whose iterators dereference to an item (with `#!cpp key()` and `#!cpp value()`, see above) and whose
-`#!cpp begin()`/`#!cpp end()` are equivalent to [`basic_json_view::begin()`](begin.md)/[`end()`](end.md), in document order.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-As for [`begin()`](begin.md)/[`end()`](end.md), `items()` visits **every** member of an object, including all
-occurrences of a duplicate key -- unlike [`operator[]`](operator[].md), [`at`](at.md), [`find`](find.md),
-and [`contains`](contains.md), which resolve to the *first* member with a given key. See the
-[Notes on duplicate keys](operator[].md#notes) of `operator[]`.
-
-!!! danger "Lifetime issues"
-
-    Unlike `BasicJsonType::items()` (see [#2040](https://github.com/nlohmann/json/issues/2040)), calling `items()` on
-    a temporary view is safe, for instance `#!cpp for (auto item : v["a"].items())`: the returned range holds a copy
-    of the view. What must outlive the loop is the document and, for a borrowed document, the source buffer.
-
-## Examples
-
-??? example
-
-    The example below shows a settings object whose source text records every update to a key as a duplicate
-    member, in the order they happened. `items()` walks all of them, so the update history is visible, while
-    [`operator[]`](operator[].md) only ever sees the *first* one and [`materialize()`](materialize.md) -- like
-    [`BasicJsonType::parse()`](../basic_json/parse.md) -- keeps only the *last*.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__items.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__items.output"
-    ```
-
-## See also
-
- [begin](begin.md), [end](end.md) - the iterators `items()` is built on
- [`BasicJsonType::items`](../basic_json/items.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,51 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>number_format
-
-```cpp
-enum class number_format {
-    shortest,
-    source
-};
-```
-
-This enumeration is used in [`dump`](dump.md) to choose how numbers are written. Two values are differentiated:
-
-shortest
-:   integers are copied from the source text -- already canonical in JSON -- except that `#!cpp -0` becomes
-    `#!cpp 0`, the way [`BasicJsonType::parse()`](../basic_json/parse.md) reads it; floats are written with the
-    library's shortest round-trip conversion, exactly as [`BasicJsonType::dump()`](../basic_json/dump.md) would (e.g.
-    `#!cpp 1.5`, `#!cpp 100.0`, `#!cpp 1e+100`)
-
-source
-:   every number is copied exactly as it appears in the source text -- `#!cpp 1.50`, `#!cpp 1E2`, `#!cpp -0`, all
-    digits of an integer literal with more digits than any number type holds -- something `BasicJsonType` cannot do,
-    since parsing already reduces every number to its parsed value
-
-## Examples
-
-??? example
-
-    The example below writes back a price list received from a supplier: with `number_format::shortest` (the
-    default), a trailing zero and scientific notation are normalized away and a long account number that overflows
-    every number type is rounded, the same way `#!cpp materialize().dump()` (or `basic_json::dump()`) would;
-    `number_format::source` keeps every number exactly as it was written in the source text instead.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__number_format.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__number_format.output"
-    ```
-
-## See also
-
- [dump](dump.md) - serialize to a JSON-formatted string
- [number_token](number_token.md) - get a single number's token text without dumping the whole value
- [`BasicJsonType::error_handler_t`](../basic_json/error_handler_t.md) - the analogous enumeration for
-  `BasicJsonType::dump`'s decoding-error behavior
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,74 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>number_token
-
-```cpp
-string_view_t number_token() const;
-```
-
-Returns the number exactly as it appears in the source text, without parsing or rounding it.
-
-## Return value
-
-The number's token text, as a [`string_view_t`](index.md#member-types) into the document's
-[`source()`](../basic_json_document/source.md) text -- for example `#!cpp "1.50"`, `#!cpp "1E2"`, `#!cpp "-0"`, or an
-integer literal with more digits than any number type holds (such as a 30-digit integer, which [`get<T>()`](get.md)
-and [`materialize()`](materialize.md) can only represent approximately, as a `number_float_t`).
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value is not a number; example:
-`"type must be number, but is string"`.
-
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`BasicJsonType` has no counterpart to this function: once a number is parsed into `number_integer_t`,
-`number_unsigned_t`, or `number_float_t`, its original textual form (leading zeros aside, which are already rejected
-by the grammar; trailing zeros in the fraction; the case and sign of the exponent; ...) is gone. `number_token()` is
-useful precisely where that form must survive -- a price or an identifier that must be reproduced exactly, or a
-number too large for any of `BasicJsonType`'s number types to hold without loss.
-
-The returned [`string_view_t`](index.md#member-types) always points into the document's
-[`source()`](../basic_json_document/source.md) text -- numbers are never decoded into the document's separate string
-buffer -- and is valid exactly as long as that text is, see the [validity rules](index.md) of `basic_json_view`.
-
-## Examples
-
-??? example
-
-    The example below keeps a price and an order ID exactly as they were written in an incoming order, where
-    converting them with [`get<T>()`](get.md) would lose information: the price picks up floating-point rounding, and
-    the order ID -- more digits than a 64-bit integer holds -- can only be approximated as a `#!cpp double` once
-    `#!cpp materialize()`d.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__number_token.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__number_token.output"
-    ```
-
-## See also
-
- [get](get.md) - convert the value to a given type
- [get_string](get_string.md) - the string, without a copy
- [`BasicJsonType::number_integer_t`](../basic_json/number_integer_t.md),
-  [`number_unsigned_t`](../basic_json/number_unsigned_t.md), [`number_float_t`](../basic_json/number_float_t.md) - the
-  number types `#!cpp get<T>()` and `materialize()` convert into
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,178 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>operator[]
-
-```cpp
-// (1)
-basic_json_view operator[](string_view_t key) const;
-basic_json_view operator[](const char* key) const;
-basic_json_view operator[](const string_t& key) const;
-
-// (2)
-basic_json_view operator[](size_type idx) const;
-template<typename IntegerType>
-basic_json_view operator[](IntegerType idx) const;
-
-// (3)
-basic_json_view operator[](const json_pointer& ptr) const;
-```
-
-1. Returns the value of the object member with key `key` -- the first one, should the key occur more than once (see
-   the [Notes](#notes) below) -- or a [discarded](is_discarded.md) view if there is no such member.
-2. Returns the array element at index `idx`, or a [discarded](is_discarded.md) view if `idx` is out of range. The
-   template accepts every integer type except `#!cpp bool` and `#!cpp std::size_t` (`#!cpp int`, `#!cpp unsigned`,
-   `#!cpp long`, `#!cpp std::int64_t`, ...) and forwards to the `size_type` overload, so that an integer argument is
-   not ambiguous between that overload and 1; a negative `idx` is out of range.
-3. Returns the value a JSON pointer `ptr` refers to, starting at this value, or a [discarded](is_discarded.md) view
-   wherever resolving it further is not possible without inserting into or extending the document (see
-   [Return value](#return-value) and [Exceptions](#exceptions) below).
-
-## Parameters
-
-`key` (in)
-:   object key of the element to access
-
-`idx` (in)
-:   index of the element to access
-
-`ptr` (in)
-:   JSON pointer to the element to access
-
-## Return value
-
-1. the value of the first member with key `key`, or a discarded view if no member has this key (or if this view is
-   [discarded](is_discarded.md))
-2. the element at index `idx`, or a discarded view if `#!cpp idx >= size()` or `idx` is negative (or if this view is
-   [discarded](is_discarded.md))
-3. the value `ptr` resolves to, starting at this value, or a discarded view (also if this view is
-   [discarded](is_discarded.md)) for exactly the reference tokens where the
-   **const** overload of [`BasicJsonType::operator[]`](../basic_json/operator%5B%5D.md) invokes undefined behavior for
-   the same pointer and the same document: an object member that does not exist, or an array index that is out of
-   range
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-1. Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the value is not an object and
-   not [discarded](is_discarded.md) --
-   the same exception, with the same message, that the **const** overload of
-   [`BasicJsonType::operator[]`](../basic_json/operator%5B%5D.md) throws for a string argument on a non-object value.
-2. Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the value is not an array and
-   not [discarded](is_discarded.md) --
-   the same exception, with the same message, that the **const** overload of
-   [`BasicJsonType::operator[]`](../basic_json/operator%5B%5D.md) throws for a numeric argument on a non-array value.
-3. Throws the same exceptions, with the same messages, that the **const** overload of
-   [`BasicJsonType::operator[]`](../basic_json/operator%5B%5D.md) throws for the same pointer and the same document:
-    - [`out_of_range.402`](../../home/exceptions.md#jsonexceptionout_of_range402) if a reference token is `#!cpp "-"`
-      at an array.
-    - [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if a reference token cannot be
-      resolved because it is used on a primitive value.
-    - [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) if an array index in `ptr` begins
-      with `#!cpp '0'`.
-    - [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in `ptr` is not a
-      number.
-
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-1. Linear in the number of members: as for [`ordered_json`](../ordered_json.md), members are compared one after
-   another, in document order, stopping at the first match. Each comparison first checks the
-   key's length -- already known from the index, without reading the key bytes -- before comparing its content, so a
-   key of a different length than `key` is rejected without touching the source text.
-   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
-   constant time on average.
-2. Linear in `idx`: elements are skipped one at a time from the first one, since they are not a fixed size in the
-   index (unlike `BasicJsonType`'s array, which is random-access).
-3. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level (as 1.) or the index into the array (as 2.).
-
-## Notes
-
-Unlike `BasicJsonType::operator[]`, which is undefined behavior (guarded by a
-[runtime assertion](../../features/assertions.md)) for a missing key on a **const** value, this operator returns a
-safe, testable result for a missing key or an index out of range: a [discarded](is_discarded.md) view, which is
-tested with [`is_discarded`](is_discarded.md).
-There is also no non-const overload that inserts a missing key or extends an array -- a view never modifies the
-document.
-
-!!! info "Chained access"
-
-    `#!cpp operator[]` on a [discarded](is_discarded.md) view returns a discarded view and does not throw, so a chain
-    like `#!cpp v["a"]["b"][0]` is safe even if `"a"` or `"b"` is missing: the first missing step makes the whole
-    result discarded, which is tested once at the end. Type errors on values that are *not* discarded still throw: a
-    key on an array or a primitive, or an index on an object or a primitive, is `type_error.305` as for
-    `BasicJsonType`. [`at`](at.md) still throws for a discarded view, as it does for a missing key.
-
-!!! warning "Duplicate keys: the first member wins"
-
-    If the source text has an object with a duplicate key, `#!cpp operator[]` (and [`at`](at.md), [`find`](find.md),
-    [`contains`](contains.md), [`value`](value.md), and JSON pointer resolution) all resolve to
-    the *first* member with that key, because a lookup can stop as soon as it finds a match. This is different from
-    [`materialize()`](materialize.md) (and [`BasicJsonType::parse()`](../basic_json/parse.md)), which replay every
-    member in order and so keep the *last* value for a repeated key, so `#!cpp v["a"]` and
-    `#!cpp v.materialize()["a"]` can differ. To get the value `parse()` would give, use
-    [`materialize()`](materialize.md) or iterate the members with [`items()`](items.md) and keep the last match.
-    The key hash index of a larger object (128 members or more) leads to the first member of a key as well.
-    [`begin()`](begin.md)/[`end()`](end.md) and [`items()`](items.md) iterate over *all* members, including
-    duplicates, in document order. See [Duplicate keys](../../features/json_view.md#duplicate-keys) and
-    [`size()`](size.md#notes).
-
-!!! info "JSON pointer resolution"
-
-    Overload 3 walks `ptr` one reference token at a time, starting at this value, the same way [`at`](at.md) and
-    [`contains`](contains.md) do. It only ever returns a discarded view where the **const** overload of
-    `BasicJsonType::operator[]` would be undefined behavior for the same pointer -- a missing object member or an
-    out-of-range array index -- and still throws for every other way `ptr` can fail to resolve. See
-    [`at`](at.md#exceptions) for the checked version, which throws in every case instead, and
-    [`contains`](contains.md) for a version that never throws.
-
-## Examples
-
-??? example "Example: (1)/(2) access specified element"
-
-    The example below reads a couple of fields out of a batch of user records without ever materializing a full
-    `BasicJsonType` value for the batch. `operator[]` is used both to look up an optional object member and to index
-    into an array -- in both cases, a missing value comes back as a discarded view that can be tested with a plain
-    `#!cpp if`, instead of relying on undefined behavior.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__operator[].cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__operator[].output"
-    ```
-
-??? example "Example: (3) access specified element via JSON pointer"
-
-    The example below reaches straight into one deeply nested field of a large document with a single JSON pointer,
-    without ever building a tree for the rest of it, and shows the discarded-view and throwing outcomes of a pointer
-    that cannot be fully resolved.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__operator[]_json_pointer.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__operator[]_json_pointer.output"
-    ```
-
-## See also
-
- [at](at.md) - access specified element with bounds checking (throws instead of returning a discarded view)
- [front](front.md), [back](back.md) - access the first or last element
- [find](find.md), [contains](contains.md) - look up a member without throwing
- [`BasicJsonType::operator[]`](../basic_json/operator%5B%5D.md) - the corresponding function of `basic_json`
- [`json_pointer`](../json_pointer/index.md) - JSON pointer type used by overload 3
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,109 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>operator==
-
-```cpp
-// (1)
-bool operator==(const basic_json_view& lhs, const basic_json_view& rhs);
-
-// (2)
-bool operator==(const basic_json_view& lhs, const BasicJsonType& rhs);
-bool operator==(const BasicJsonType& lhs, const basic_json_view& rhs);
-```
-
-1. Compares two views for equality: whether the values [`BasicJsonType::parse()`](../basic_json/parse.md) would
-   produce for `lhs` and `rhs` are equal, according to `BasicJsonType`'s [`operator==`](../basic_json/operator_eq.md).
-2. Compares a view and a `BasicJsonType` value for equality, in either order: whether the value `parse()` would
-   produce for the view and the other operand are equal, according to `BasicJsonType`'s
-   [`operator==`](../basic_json/operator_eq.md).
-
-Neither overload builds a `BasicJsonType` value for a view to do the comparison (see [Notes](#notes) below). Numbers
-compare by value across their types (`#!cpp 1 == 1.0`), and an object compares by its members, with duplicate keys
-resolved exactly as `parse()` resolves them -- the last value, at the position of the first occurrence of the key.
-This is not what [`operator[]`](operator[].md) and the other lookups return for a duplicate key: they find the *first*
-member (see [Duplicate keys](../../features/json_view.md#duplicate-keys)).
-
-## Parameters
-
-`lhs` (in)
-:   first value to consider
-
-`rhs` (in)
-:   second value to consider
-
-## Return value
-
-whether the values `lhs` and `rhs` are equal
-
-## Exception safety
-
-Strong exception safety: if an exception is thrown, there are no changes to either operand, or to the document(s) a
-view refers to.
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc`. Unlike the other comparison and most other `basic_json_view` functions,
-`operator==` is not `#!cpp noexcept`: resolving an object's members needs a temporary array to sort them by key (see
-[Complexity](#complexity) below), and that allocation can fail.
-
-## Complexity
-
-Linear in the size of the compared values: every number, string, array element, and object member is visited at most
-once, and the walk is iterative, so the nesting depth it can compare is limited by available memory only, not by the
-call stack (as for [`materialize()`](materialize.md)). Resolving an object's members takes an additional O(n log n)
-in the number of members at that level, since they are sorted by key to detect and resolve duplicates before being
-compared. Two arrays of different [`size()`](size.md) are rejected without visiting either one's elements.
-
-## Notes
-
-Only a single number, boolean, or `#!cpp null` value is ever materialized into a `BasicJsonType`, to reuse its
-`operator==` -- for numbers, so that values written differently in the source text but equal in value (e.g. an
-integer and a floating-point literal) still compare equal, following the same rules `BasicJsonType` does for special
-values such as `#!cpp NaN`. Constructing one of these scalars never allocates. Strings are compared directly, without
-allocating, either from the source text on both sides or, for overload 2, against `BasicJsonType`'s own string.
-Arrays and objects are never materialized at all; only their elements or members are visited, one pair at a time.
-
-!!! info "How objects are compared"
-
-    For a [`json_view`](../json_view.md) (`BasicJsonType::object_t` is `#!cpp std::map`), members are compared by
-    key, regardless of the order they appear in the source text. For an
-    [`ordered_json_view`](../ordered_json_view.md) (`object_t` is `ordered_map`), they are compared in the order
-    they occur, so the very same two objects with their members reordered can compare equal as `json_view`s but not
-    as `ordered_json_view`s. This is exactly how [`json`](../json.md) and [`ordered_json`](../ordered_json.md)
-    compare, see ["Comparing different `basic_json` specializations"](../basic_json/operator_eq.md#notes).
-
-!!! info "Discarded views"
-
-    A [discarded](is_discarded.md) view compares the same way a discarded `BasicJsonType` value does, which is
-    governed by
-    [`JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON`](../macros/json_use_legacy_discarded_value_comparison.md): by
-    default, a discarded view is never equal to anything, not even another discarded view.
-
-No ordering comparison (`#!cpp operator<`) is provided for `basic_json_view`; [`materialize()`](materialize.md) is
-the way to get a `BasicJsonType` value that supports it.
-
-## Examples
-
-??? example
-
-    The example below checks whether a newly received configuration differs from the previous one, and whether a
-    received document matches what a test expects -- directly on views, without ever materializing a `BasicJsonType`
-    value for either side.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__operator_eq.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__operator_eq.output"
-    ```
-
-## See also
-
- [operator!=](operator_ne.md) - compare for inequality
- [materialize](materialize.md) - build a `BasicJsonType` value, e.g. to keep comparing after the document is gone
- [`BasicJsonType::operator==`](../basic_json/operator_eq.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,74 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>operator<<
-
-```cpp
-std::ostream& operator<<(std::ostream& o, const basic_json_view& v);
-```
-
-Not available when [`JSON_NO_IO`](../macros/json_no_io.md) is defined.
-
-Serializes the given view `v` to the output stream `o`, using [`dump`](dump.md) -- exactly as
-`#!cpp operator<<(std::ostream&, const basic_json&)` does for a `basic_json` value.
-
- The indentation of the output can be controlled with the member variable `width` of the output stream `o`. For
-  instance, using the manipulator `std::setw(4)` on `o` sets the indentation level to `4`, and the serialization
-  result is the same as calling `#!cpp v.dump(4)`. A `width` of `0` or less (the default) selects the most compact
-  representation, as `#!cpp v.dump(-1)` does.
- The indentation character can be controlled with the member variable `fill` of the output stream `o`. For instance,
-  the manipulator `std::setfill('\t')` sets indentation to use a tab character rather than the default space
-  character.
- As for `basic_json`, `o`'s `width` is reset to `0` after this call, whether or not it was greater than `0` before.
-
-Numbers are always written as `#!cpp v.dump()` writes them by default, i.e. as with
-[`number_format::shortest`](number_format.md); there is no way to select `#!cpp number_format::source` through the
-stream.
-
-## Parameters
-
-`o` (in, out)
-:   stream to write to
-
-`v` (in)
-:   view to serialize
-
-## Return value
-
-the stream `o`
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc`, propagated from [`dump`](dump.md#exceptions). Unlike
-`#!cpp operator<<(std::ostream&, const basic_json&)`, there is no UTF-8 decoding step that could throw
-[`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316), and no `error_handler` to choose between --
-see the [Exceptions](dump.md#exceptions) of `dump`.
-
-## Complexity
-
-Linear, as [`dump`](dump.md#complexity).
-
-## Examples
-
-??? example
-
-    The example below writes one record out of a larger batch straight to a log stream -- compact for a one-line
-    entry, and pretty-printed with `std::setw`/`std::setfill` for a readable dump -- without ever building a
-    `BasicJsonType` value for the record, or for the rest of the batch.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__operator_ltlt.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__operator_ltlt.output"
-    ```
-
-## See also
-
- [dump](dump.md) - serialize to a JSON-formatted string
- [`operator<<(std::ostream&)`](../operator_ltlt.md) - the corresponding operator for `basic_json`
- [`JSON_NO_IO`](../macros/json_no_io.md) - switch off functions relying on certain C++ I/O headers
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,82 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>operator!=
-
-```cpp
-// (1)
-bool operator!=(const basic_json_view& lhs, const basic_json_view& rhs);
-
-// (2)
-bool operator!=(const basic_json_view& lhs, const BasicJsonType& rhs);
-bool operator!=(const BasicJsonType& lhs, const basic_json_view& rhs);
-```
-
-1. Compares two views for inequality. Returns `#!cpp !(lhs == rhs)`, see [operator==](operator_eq.md).
-2. Compares a view and a `BasicJsonType` value for inequality, in either order. Returns `#!cpp !(lhs == rhs)` (or,
-   for the reversed order, `#!cpp !(rhs == lhs)`), see [operator==](operator_eq.md).
-
-Since `operator!=` is defined as the negation of [`operator==`](operator_eq.md), it follows the same rules for
-special cases: for instance, since a [discarded](is_discarded.md) view is never equal to anything by default (see
-[operator=='s Notes](operator_eq.md#notes)), it is never *unequal* to anything either -- `#!cpp discarded != discarded`
-is also `#!cpp false`, exactly as for a discarded `BasicJsonType` value.
-
-## Parameters
-
-`lhs` (in)
-:   first value to consider
-
-`rhs` (in)
-:   second value to consider
-
-## Return value
-
-whether the values `lhs` and `rhs` are not equal
-
-## Exception safety
-
-Strong exception safety: if an exception is thrown, there are no changes to either operand, or to the document(s) a
-view refers to.
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc`, propagated from [`operator==`](operator_eq.md#exceptions). Unlike most other
-`basic_json_view` functions, `operator!=` is not `#!cpp noexcept`.
-
-## Complexity
-
-Linear, as [`operator==`](operator_eq.md#complexity).
-
-## Notes
-
-See the [Notes](operator_eq.md#notes) of `operator==` -- in particular for how an object's members are compared
-(order matters for [`ordered_json_view`](../ordered_json_view.md) but not for [`json_view`](../json_view.md)) and
-for how discarded views compare.
-
-No ordering comparison (`#!cpp operator<`) is provided for `basic_json_view`; [`materialize()`](materialize.md) is
-the way to get a `BasicJsonType` value that supports it.
-
-## Examples
-
-??? example
-
-    The example below asserts, as a test would, that a received document differs from an unwanted value, and shows
-    that -- as for [`json`](../json.md)/[`ordered_json`](../ordered_json.md) -- reordering an object's members is
-    detected as a difference for an `ordered_json_view` but not for a `json_view`.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__operator_ne.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__operator_ne.output"
-    ```
-
-## See also
-
- [operator==](operator_eq.md) - compare for equality
- [materialize](materialize.md) - build a `BasicJsonType` value, e.g. to keep comparing after the document is gone
- [`BasicJsonType::operator!=`](../basic_json/operator_ne.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -33,12 +33,6 @@ Constant: for an object or array, the element count is stored in the index, not
 As for [`BasicJsonType::size()`](../basic_json/size.md), this does not return the length of a string value -- it is
 `1` for a string, regardless of its length.

-If the source text has an object with a duplicate key, every occurrence counts towards its `size()` -- unlike
-[`materialize()`](materialize.md) (and [`BasicJsonType::parse()`](../basic_json/parse.md)), which keeps only the last
-value for a repeated key. This means `#!cpp v.size()` can be larger than `#!cpp v.materialize().size()`. See the
-[Notes on duplicate keys](operator[].md#notes) of `operator[]` for why lookups and iteration disagree on how many
-members there are.
-
 ## Examples

 ??? example
@@ -1,63 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>type_name
-
-```cpp
-const char* type_name() const noexcept;
-```
-
-Returns the type name as string to be used in error messages -- usually to indicate that a function was called on a
-wrong JSON type. Identical to [`BasicJsonType::type_name()`](../basic_json/type_name.md), including the extra
-`#!cpp "discarded"` return value for a [discarded](is_discarded.md) view (`BasicJsonType::type_name()` produces the
-same string for a discarded `BasicJsonType` value).
-
-## Return value
-
-a string representation of the type ([`value_t`](../basic_json/value_t.md)):
-
-| Value type                                         | return value  |
-|----------------------------------------------------|---------------|
-| `#!json null`                                      | `"null"`      |
-| boolean                                            | `"boolean"`   |
-| string                                             | `"string"`    |
-| number (integer, unsigned integer, floating-point) | `"number"`    |
-| object                                             | `"object"`    |
-| array                                              | `"array"`     |
-| discarded                                          | `"discarded"` |
-
-`type_name()` never returns `#!cpp "binary"`, since a JSON text has no binary values (see
-[`is_binary()`](is_binary.md)); it also never returns `#!cpp "invalid"`, since a view's `#!cpp kind` always comes
-from a value the parser actually produced.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below reports why some parsed messages were rejected, using only `type_name()` -- no
-    `BasicJsonType` value is ever built for the ones that are wrong, and the message text matches what
-    [`BasicJsonType::type_name()`](../basic_json/type_name.md) would produce for the same value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_name.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_name.output"
-    ```
-
-## See also
-
- [type](type.md) - return the type of the value
- [`BasicJsonType::type_name`](../basic_json/type_name.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,140 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>value
-
-```cpp
-// (1)
-template<typename T>
-T value(string_view_t key, const T& default_value) const;
-string_t value(string_view_t key, const char* default_value) const;
-
-// (2)
-template<typename T>
-T value(const json_pointer& ptr, const T& default_value) const;
-string_t value(const json_pointer& ptr, const char* default_value) const;
-```
-
-1. Returns the value of the object member with key `key` -- the first one, should the key occur more than once (see
-   [Notes on duplicate keys](operator[].md#notes)) -- converted to `T`, or `default_value` if there is no such member.
-2. Returns the value a JSON pointer `ptr` refers to, starting at this value, converted to `T`, or `default_value` if
-   `ptr` cannot be resolved.
-
-Both overloads have a dedicated `#!cpp const char*` overload, so `#!cpp v.value(key, "default")` (and the JSON pointer
-equivalent) deduce `string_t`, not `const char*`, for their return type and for the comparison used to pick between
-`key` and `default_value`.
-
-## Template parameters
-
-`T`
-:   the type to convert the found value to; also the type of `default_value`
-
-## Parameters
-
-`key` (in)
-:   object key of the element to access
-
-`ptr` (in)
-:   JSON pointer to the element to access
-
-`default_value` (in)
-:   the value to return if `key`/`ptr` resolves to no value
-
-## Return value
-
-1. the first member with key `key`, converted to `T`, or `default_value`
-2. the value `ptr` resolves to, converted to `T`, or `default_value`
-
-## Exception safety
-
-Strong guarantee: there are no changes to the view or the document it refers to.
-
-## Exceptions
-
-1. Throws [`type_error.306`](../../home/exceptions.md#jsonexceptiontype_error306) if the value is not an object --
-   the same exception, with the same message, that [`BasicJsonType::value`](../basic_json/value.md) throws for the
-   same call. If a member with key `key` is found, throws whatever converting it to `T` throws (typically
-   [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302), with the same message
-   [`BasicJsonType::value`](../basic_json/value.md) throws for the same mismatch); a missing member never throws.
-2. Throws [`type_error.306`](../../home/exceptions.md#jsonexceptiontype_error306) if this value -- not the value `ptr`
-   resolves to -- is neither an object nor an array. Throws [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106)
-   or [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if `ptr` contains a malformed array
-   index. If `ptr` resolves to a value, throws whatever converting it to `T` throws. Every other way `ptr` can fail to
-   resolve -- a missing key, an out-of-range or "`-`" array index, an unresolvable token on a primitive -- yields
-   `default_value` instead of throwing, exactly as [`BasicJsonType::value`](../basic_json/value.md) catches
-   `out_of_range` and returns `default_value`.
-
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
-
-## Complexity
-
-1. Linear in the number of members: as for [`operator[]`](operator[].md#complexity), members are compared one after
-   another, in document order, stopping at the first match. Plus the complexity of converting
-   the found member to `T` (see [`get`](get.md)).
-   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
-   constant time on average.
-2. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
-   that level or the index into the array -- as for the [`operator[]`](operator[].md#complexity) and
-   [`at`](at.md#complexity) overloads that take a JSON pointer. Plus the complexity of converting the resolved value
-   to `T`.
-
-## Notes
-
-!!! warning "Duplicate keys: the first member wins"
-
-    If the source text repeats a key, this resolves to the *first* member with it, not to the last one that
-    [`materialize()`](materialize.md) and `parse()` keep. See the [Notes on duplicate keys](operator[].md#notes) of
-    `operator[]` and [Duplicate keys](../../features/json_view.md#duplicate-keys) for the reasons and for how to get
-    the last value.
-
-!!! info "Differences to `at` and `operator[]`"
-
-    Unlike [`at`](at.md), this function does not throw if `key`/`ptr` resolves to no value. Unlike
-    [`operator[]`](operator[].md), it never returns a [discarded](is_discarded.md) view -- it always returns a `T` --
-    and it is available on any view, since it never needs to insert a missing element the way the non-const
-    `BasicJsonType::operator[]` would.
-
-!!! info "Which values can be asked"
-
-    As for [`BasicJsonType::value`](../basic_json/value.md), the key overload (1) requires an object, and the JSON
-    pointer overload (2) an object or an array.
-
-## Examples
-
-??? example "Example: (1) access specified object element with default value"
-
-    The example below reads a couple of optional configuration fields with a default, so that a missing key never
-    needs a `#!cpp try`/`#!cpp catch` of its own.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__value.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__value.output"
-    ```
-
-??? example "Example: (2) access specified element via JSON pointer with default value"
-
-    The example below reads an optional, nested configuration value with a default, given as a JSON pointer.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__value_json_pointer.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__value_json_pointer.output"
-    ```
-
-## See also
-
- [at](at.md) - access specified element with bounds checking (throws instead of returning a default value)
- [operator[]](operator[].md) - access specified element (returns a discarded view instead of a default value)
- [`BasicJsonType::value`](../basic_json/value.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,43 +0,0 @@
-# <small>nlohmann::</small>json_editable_document
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using json_editable_document = basic_json_document<json, true>;
-```
-
-This type is an **editable** [`basic_json_document`](basic_json_document/index.md) of the default
-[`json`](json.md) specialization: in addition to everything [`json_document`](json_document.md) offers,
-[`set`](basic_json_document/set.md) and [`push_back`](basic_json_document/push_back.md) change values after
-parsing, without ever rewriting the source text -- see [Edits](basic_json_document/index.md#edits) and
-[Editing a document](../features/json_view.md#editing-a-document).
-
-## Examples
-
-??? example
-
-    The example below patches two fields of a small configuration document -- changing one and adding another --
-    and dumps it back out with the member order and the spelling of the untouched number preserved, something a
-    plain [`json`](json.md) value cannot do.
-
-    ```cpp
-    --8<-- "examples/json_editable_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/json_editable_document.output"
-    ```
-
-## See also
-
- [json_editable_view](json_editable_view.md) - a view of a value of a `json_editable_document`
- [json_document](json_document.md) - the read-only document this type adds edits to
- [ordered_json_editable_document](ordered_json_editable_document.md) - the corresponding editable document for
-  `ordered_json`
- [Edits](basic_json_document/index.md#edits) - what an edit guarantees
-
-## Version history
-
-Since version 3.13.0.
@@ -1,41 +0,0 @@
-# <small>nlohmann::</small>json_editable_view
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using json_editable_view = basic_json_view<json, true>;
-```
-
-This type is a [`basic_json_view`](basic_json_view/index.md) of a value of a
-[`json_editable_document`](json_editable_document.md). It offers the same read-only interface as
-[`json_view`](json_view.md); what is different is what it can be a view *of* -- a value that
-[`set`](basic_json_document/set.md) and [`push_back`](basic_json_document/push_back.md) can change, with every view
-still referring to it seeing the change, see [Edits](basic_json_document/index.md#edits).
-
-## Examples
-
-??? example
-
-    The example below is the same as [`json_editable_document`'s](json_editable_document.md): every view read back
-    out of the document -- `#!cpp doc.root()` and the views nested under it -- sees the edits made through `set`.
-
-    ```cpp
-    --8<-- "examples/json_editable_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/json_editable_document.output"
-    ```
-
-## See also
-
- [json_editable_document](json_editable_document.md) - the document type this view refers into
- [json_view](json_view.md) - the corresponding read-only view
- [ordered_json_editable_view](ordered_json_editable_view.md) - the corresponding view for
-  `ordered_json_editable_document`
-
-## Version history
-
-Since version 3.13.0.
@@ -16,10 +16,6 @@ header. See also the [macro overview page](../../features/macros.md).

 ## Parsing

- [**JSON_DISABLE_STREAM_BULK_SCAN**](json_disable_stream_bulk_scan.md) - read a `std::istream` one character at a time
-  instead of scanning its stream buffer in bulk
- [**JSON_DISABLE_UNLOCKED_FILE_IO**](json_disable_unlocked_file_io.md) - read a `FILE*` with `std::fgetc` instead of
-  locking it once and using the unlocked stdio functions
 - [**JSON_PRECISE_STREAM_POSITION**](json_precise_stream_position.md) - opt in to leaving an input stream positioned
  right after a parsed number
 - [**JSON_STRICT_BINARY_UTF8**](json_strict_binary_utf8.md) - opt in to checking strings for valid UTF-8 in the CBOR,
@@ -42,8 +38,6 @@ header. See also the [macro overview page](../../features/macros.md).
 - [**JSON_SKIP_UNSUPPORTED_COMPILER_CHECK**](json_skip_unsupported_compiler_check.md) - do not warn about unsupported compilers
 - [**JSON_USE_GLOBAL_UDLS**](json_use_global_udls.md) - place user-defined string literals (UDLs) into the global namespace
 - [**JSON_USE_SIMDUTF**](json_use_simdutf.md) - use the simdutf library to accelerate UTF-8 validation
- [**JSON_VIEW_NO_SIMD**](json_view_no_simd.md) - use only portable code in the parser of `json_view.hpp`
- [**JSON_VIEW_USE_SSSE3**](json_view_use_ssse3.md) - validate non-ASCII strings with SSSE3 in the parser of `json_view.hpp`

 ## Library version

@@ -1,144 +0,0 @@
-# JSON_DISABLE_STREAM_BULK_SCAN
-
-```cpp
-#define JSON_DISABLE_STREAM_BULK_SCAN /* value */
-```
-
-When defined to `1`, parsing from a `#!cpp std::istream` reads the input one character at a time through the stream
-buffer, as in version 3.12.0 and earlier, instead of scanning the characters that the stream buffer already holds in
-bulk.
-
-The macro is an escape hatch for stream buffers that do not follow the usual contract of `std::basic_streambuf` (see
-the requirements on the stream buffer in the notes below). It does not change any result: values, exceptions, and the
-position of the stream after parsing are the same either way. Only the speed differs.
-
-## Default definition
-
-The default value is `0`: streams are scanned in bulk.
-
-```cpp
-#define JSON_DISABLE_STREAM_BULK_SCAN 0
-```
-
-## Notes
-
-!!! note "How streams are scanned"
-
-    A `std::streambuf` keeps the part of the input it has read but not yet handed out in its *get area*, the range
-    from `gptr()` to `egptr()`. A `std::filebuf`, for instance, reads the file in blocks of a few kilobytes into its get
-    area, and a `std::stringbuf` exposes its whole string as one get area.
-
-    When parsing from a `std::istream`, the parser scans this get area directly, with the same fast paths that it uses
-    for a `std::string`: runs of ordinary string characters, numbers, and indentation are recognized several bytes at a
-    time instead of being requested from the stream buffer one character at a time. When the parser reaches the end of
-    the get area, it asks the stream buffer for the next character as before, which makes the stream buffer refill its
-    get area.
-
-    The parser only reads characters that it would also have read one at a time, and it advances the stream buffer
-    exactly over the characters it consumes. Nothing is read ahead, buffered elsewhere, or put back. Therefore, the
-    stream is left exactly where it was left before:
-
-    - [`operator>>`](../operator_gtgt.md) and [`sax_parse`](../basic_json/sax_parse.md) with `strict = false` can still
-      read several values from one stream, and the stream can still be used with other `std::istream` functions after a
-      value has been read.
-    - With [`JSON_PRECISE_STREAM_POSITION`](json_precise_stream_position.md), the stream is still positioned right after
-      a parsed number.
-    - Exception messages, including the line, the column, and the last read token, are unchanged.
-
-!!! note "Performance"
-
-    Parsing from a `std::ifstream` or `std::istringstream` is typically 1.5 to 2 times as fast as before, and reading
-    many small values from one stream with `operator>>` 1.4 to 4 times as fast. Parsing from a stream is then within
-    about 10 to 20 % of first reading the whole file into a `std::string` and parsing that.
-
-    A stream buffer without a get area (one that only overrides `underflow()` and `uflow()` and hands out every
-    character from there) offers nothing to scan in bulk, so it is read one character at a time as before.
-
-!!! note "Requirements on the stream buffer"
-
-    The bulk scan relies on the following behavior, which every stream buffer of the standard library and every stream
-    buffer that keeps its input in its get area has:
-
-    - When `sgetc()` returns a character while `gptr() < egptr()`, that character is `*gptr()`; when `sbumpc()` returns
-      one, it was at `gptr()` before the call.
-    - Characters in the get area are not changed while they are in the get area.
-    - `underflow()` or `uflow()` either sets up a get area that holds the returned character at `gptr()` (or at
-      `gptr() - 1` after `uflow()`), or leaves the get area empty.
-
-    A stream buffer that returns characters from `uflow()` while leaving unrelated characters in its get area, or that
-    changes the characters in its get area in place, does not meet these requirements. Define the macro to `1` for
-    such stream buffers.
-
-!!! note "ABI compatibility"
-
-    The value of this macro is encoded in the [namespace](../../features/namespace.md) (tag `_dsbs`), resulting in
-    distinct symbol names. Translation units compiled with and without it can therefore be linked into the same program
-    without One Definition Rule (ODR) violations, but they cannot exchange instances of library types.
-
-!!! note "Other inputs"
-
-    Strings, string views, vectors, arrays, and pointer or iterator ranges over contiguous memory are scanned in bulk
-    anyway. Reading from a `#!cpp FILE*` is not affected by this macro; see
-    [`JSON_DISABLE_UNLOCKED_FILE_IO`](json_disable_unlocked_file_io.md) for that input.
-
-## Examples
-
-??? example "Example: reading values from a stream (default)"
-
-    The stream is scanned in bulk, and the values are read one after the other:
-
-    ```cpp
-    #include <iostream>
-    #include <sstream>
-    #include <nlohmann/json.hpp>
-
-    using json = nlohmann::json;
-
-    int main()
-    {
-        std::istringstream input(R"({"id": 1} {"id": 2} 42 rest)");
-        json j1, j2, j3;
-        input >> j1 >> j2 >> j3;  // {"id":1}, {"id":2}, 42
-
-        std::string word;
-        input >> word;            // "rest"
-    }
-    ```
-
-??? example "Example: reading one character at a time (macro defined to 1)"
-
-    With the macro, the same program reads the stream one character at a time, with the same results:
-
-    ```cpp
-    #define JSON_DISABLE_STREAM_BULK_SCAN 1
-    #include <iostream>
-    #include <sstream>
-    #include <nlohmann/json.hpp>
-
-    using json = nlohmann::json;
-
-    int main()
-    {
-        std::istringstream input(R"({"id": 1} {"id": 2} 42 rest)");
-        json j1, j2, j3;
-        input >> j1 >> j2 >> j3;  // {"id":1}, {"id":2}, 42
-
-        std::string word;
-        input >> word;            // "rest"
-    }
-    ```
-
-## See also
-
- [**parse**](../basic_json/parse.md) - deserialize from a compatible input
- [**operator>>**](../operator_gtgt.md) - deserialize from stream
- [**sax_parse**](../basic_json/sax_parse.md) - generate SAX events
- [**JSON_PRECISE_STREAM_POSITION**](json_precise_stream_position.md) - leave an input stream positioned right after a
-  parsed number
- [**JSON_DISABLE_UNLOCKED_FILE_IO**](json_disable_unlocked_file_io.md) - read a `FILE*` with the locking stdio
-  functions
- [Parsing: input sources and performance](../../features/parsing/index.md#input-sources-and-performance)
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,115 +0,0 @@
-# JSON_DISABLE_UNLOCKED_FILE_IO
-
-```cpp
-#define JSON_DISABLE_UNLOCKED_FILE_IO /* value */
-```
-
-When defined to `1`, parsing from a `#!cpp FILE*` reads every character with `std::fgetc`, as in version 3.12.0 and
-earlier, instead of locking the file once and reading it with the unlocked stdio functions.
-
-It does not change any result: values, exceptions, and the position of the file after parsing are the same either way.
-Only the speed and the locking of the file differ (see the notes on locking below).
-
-Builds with MemorySanitizer use `std::fgetc` automatically, because the inline `getc_unlocked` of glibc reads the stdio
-buffer directly, which glibc (not instrumented) filled, and MemorySanitizer would report it as uninitialized.
-
-## Default definition
-
-The default value is `0`: the file is locked once and read with the unlocked stdio functions where they are available.
-
-```cpp
-#define JSON_DISABLE_UNLOCKED_FILE_IO 0
-```
-
-## Notes
-
-!!! note "Background"
-
-    The C standard library makes every `std::fgetc` call thread-safe by locking and unlocking the `FILE` object. When
-    parsing from a `FILE*`, the parser reads one character at a time, so this happens for every character of the input.
-
-    Instead, the parser locks the file once when parsing starts and unlocks it when parsing ends - also when an
-    exception is thrown - and reads the characters in between without locking:
-
-    | C library                                                  | functions                                          |
-    |------------------------------------------------------------|----------------------------------------------------|
-    | glibc (Linux), Apple (macOS, iOS), Android, FreeBSD, NetBSD, OpenBSD, DragonFly BSD | `flockfile`, `getc_unlocked`, `funlockfile` (POSIX) |
-    | Microsoft (MSVC, clang-cl)                                 | `_lock_file`, `_fgetc_nolock`, `_unlock_file`       |
-    | others (e.g., musl, MinGW, newlib)                         | `std::fgetc`, as before                             |
-
-    This makes parsing from a `FILE*` 3 to 4 times as fast with the Apple C library and 1.1 to 1.3 times as fast with
-    glibc, whose locking is cheaper. The binary formats ([`from_cbor`](../basic_json/from_cbor.md),
-    [`from_msgpack`](../basic_json/from_msgpack.md), ...) read from a `FILE*` the same way.
-
-!!! note "Locking"
-
-    While a value is parsed from a `FILE*`, the parsing thread holds the file's lock. The lock is recursive, so the
-    parsing thread itself - for instance, a [SAX](../json_sax/index.md) handler or a
-    [parser callback](../basic_json/parser_callback_t.md) - can keep using the file with stdio functions such as
-    `std::ftell`. Other threads that use the same `FILE` object wait until the parser is done. Before, they could
-    interleave their reads with the parser's, which made the parsed input unpredictable anyway.
-
-    A program in which a SAX handler or parser callback waits for **another** thread that uses the **same** `FILE`
-    object would deadlock. Define the macro to `1` for such programs.
-
-!!! note "ABI compatibility"
-
-    The value of this macro is encoded in the [namespace](../../features/namespace.md) (tag `_dufio`), resulting in
-    distinct symbol names. Translation units compiled with and without it can therefore be linked into the same program
-    without One Definition Rule (ODR) violations, but they cannot exchange instances of library types.
-
-!!! note "Other inputs"
-
-    Reading from a `#!cpp std::istream` is not affected by this macro; see
-    [`JSON_DISABLE_STREAM_BULK_SCAN`](json_disable_stream_bulk_scan.md) for that input.
-
-## Examples
-
-??? example "Example: parsing from a `FILE*` (default)"
-
-    The file is locked once while it is parsed:
-
-    ```cpp
-    #include <cstdio>
-    #include <nlohmann/json.hpp>
-
-    using json = nlohmann::json;
-
-    int main()
-    {
-        std::FILE* f = std::fopen("example.json", "rb");
-        json j = json::parse(f);  // f is locked until parse() returns
-        std::fclose(f);
-    }
-    ```
-
-??? example "Example: locking for every character (macro defined to 1)"
-
-    With the macro, every character is read with `std::fgetc`, with the same result:
-
-    ```cpp
-    #define JSON_DISABLE_UNLOCKED_FILE_IO 1
-    #include <cstdio>
-    #include <nlohmann/json.hpp>
-
-    using json = nlohmann::json;
-
-    int main()
-    {
-        std::FILE* f = std::fopen("example.json", "rb");
-        json j = json::parse(f);  // std::fgetc for every character
-        std::fclose(f);
-    }
-    ```
-
-## See also
-
- [**parse**](../basic_json/parse.md) - deserialize from a compatible input
- [**sax_parse**](../basic_json/sax_parse.md) - generate SAX events
- [**JSON_DISABLE_STREAM_BULK_SCAN**](json_disable_stream_bulk_scan.md) - read a `std::istream` one character at a
-  time
- [Parsing: input sources and performance](../../features/parsing/index.md#input-sources-and-performance)
-
-## Version history
-
- Added in version 3.13.0.
@@ -72,12 +72,6 @@ The default value is `0` (disabled — existing behavior is preserved).
    distinct symbol names. Translation units compiled with and without it can therefore be linked into the same program
    without One Definition Rule (ODR) violations, but they cannot exchange instances of library types.

-!!! note "Bulk scanning"
-
-    The parser scans the characters in the stream buffer in bulk (see
-    [`JSON_DISABLE_STREAM_BULK_SCAN`](json_disable_stream_bulk_scan.md)), but it never reads ahead. The stream is left
-    at the same position with and without bulk scanning, in both modes of this macro.
-
 !!! tip "Workaround without the macro"

    Separate the values in the stream with whitespace. The character consumed after a number is then the separator,
@@ -12,9 +12,8 @@ non-ASCII characters (e.g. CJK or emoji) this can validate several times faster.
 This is an **opt-in external dependency**. The library itself remains header-only and its behavior is unchanged: the
 same input is accepted or rejected either way, and every parse error is reported at the same position with the same
 message (simdutf is only used to fast-path *valid* runs; anything it flags falls back to the scalar path so the exact
-diagnostic is preserved). A `std::istream` uses simdutf for the characters its stream buffer holds (see
-[`JSON_DISABLE_STREAM_BULK_SCAN`](json_disable_stream_bulk_scan.md)); other streaming inputs (`FILE*`, wide strings,
-user-defined adapters) always use the scalar path.
+diagnostic is preserved). Streaming inputs (files, `std::istream`, wide strings, user-defined adapters) always use the
+scalar path.

 When `JSON_USE_SIMDUTF` is defined you must make the `simdutf.h` header available on the include path and link the
 simdutf library. When it is not defined, no simdutf header is included and there is no dependency.
@@ -1,52 +0,0 @@
-# JSON_VIEW_NO_SIMD
-
-```cpp
-#define JSON_VIEW_NO_SIMD
-```
-
-When defined, the parser of [`basic_json_document`](../basic_json_document/index.md) (`<nlohmann/json_view.hpp>`)
-uses only portable C++ to scan strings. By default, it scans long runs of string bytes 16 at a time with NEON on
-AArch64 (with GCC and Clang) and SSE2 on x86-64, which are part of the baseline instruction sets of these
-architectures, and validates non-ASCII text with NEON (or SSSE3, see
-[`JSON_VIEW_USE_SSSE3`](json_view_use_ssse3.md)).
-
-The same input is accepted or rejected either way, with the same values, and errors are reported the same way; only
-the speed differs. The macro exists for platforms whose compilers lack the intrinsics headers, and to test the portable
-code.
-
-!!! note "ABI compatibility"
-
-    The macro selects between two definitions of the same inline functions. Whether it is defined is encoded in the
-    [namespace](../../features/namespace.md) (tag `_vns`), resulting in distinct symbol names. Translation units
-    compiled with and without it can therefore be linked into the same program without One Definition Rule (ODR)
-    violations, but they cannot exchange instances of library types.
-
-## Default definition
-
-By default, `#!cpp JSON_VIEW_NO_SIMD` is not defined, and the vector code is used where available.
-
-```cpp
-#undef JSON_VIEW_NO_SIMD
-```
-
-## Examples
-
-??? example
-
-    The code below uses the portable string scanning of the view.
-
-    ```cpp
-    #define JSON_VIEW_NO_SIMD
-    #include <nlohmann/json_view.hpp>
-
-    ...
-    ```
-
-## See also
-
- [JSON_VIEW_USE_SSSE3](json_view_use_ssse3.md) - validate non-ASCII strings with SSSE3 on x86-64
- [json_view](../../features/json_view.md) - the zero-copy view
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,53 +0,0 @@
-# JSON_VIEW_USE_SSSE3
-
-```cpp
-#define JSON_VIEW_USE_SSSE3
-```
-
-When defined on x86-64, the parser of [`basic_json_document`](../basic_json_document/index.md)
-(`<nlohmann/json_view.hpp>`) validates non-ASCII text in strings with SSSE3 without asking the CPU first.
-
-By default, the parser checks once at run time whether the CPU has SSSE3 (all x86-64 CPUs since about 2011 have it)
-and then validates non-ASCII text 16 bytes at a time, using the "lookup4" algorithm of
-[simdjson](https://github.com/simdjson/simdjson); on CPUs without SSSE3, it validates one UTF-8 sequence at a time.
-The vector check is compiled for SSSE3 with a function attribute (GCC 4.9 and later, Clang), so this needs no compiler
-option. With MSVC, the check uses `__cpuid`. On AArch64, the vector check uses NEON and is always on.
-
-Define the macro only together with a compiler option that enables SSSE3 (e.g. `-mssse3`, or `-march=` with a CPU that
-has it), and only for programs that run on such CPUs. It saves the check of the CPU, which costs little. The same
-input is accepted or rejected either way; only the speed of non-ASCII text differs.
-
-!!! note "ABI compatibility"
-
-    The macro selects between two definitions of the same inline functions. Whether it is defined is encoded in the
-    [namespace](../../features/namespace.md) (tag `_vssse3`, on every architecture), resulting in distinct symbol
-    names. Translation units compiled with and without it can therefore be linked into the same program without One
-    Definition Rule (ODR) violations, but they cannot exchange instances of library types.
-
-## Default definition
-
-By default, `#!cpp JSON_VIEW_USE_SSSE3` is not defined.
-
-```cpp
-#undef JSON_VIEW_USE_SSSE3
-```
-
-## Examples
-
-??? example
-
-    With CMake, for a program that only runs on CPUs with SSSE3:
-
-    ```cmake
-    target_compile_definitions(your_target PRIVATE JSON_VIEW_USE_SSSE3)
-    target_compile_options(your_target PRIVATE -mssse3)
-    ```
-
-## See also
-
- [JSON_VIEW_NO_SIMD](json_view_no_simd.md) - use only portable code in the view's parser
- [JSON_USE_SIMDUTF](json_use_simdutf.md) - validate UTF-8 with simdutf in `basic_json`'s parser
-
-## Version history
-
- Added in version 3.13.0.
@@ -39,6 +39,5 @@ the library.
 ## Version history

 - Added in version 3.11.0. Changed inline namespace name in version 3.11.2. Added the ABI tag `_dp` in
-  version 3.12.0, and the ABI tags `_bics`, `_psp`, `_snul`, `_sbu8`, `_ekmo`, `_dsbs`, `_dufio`, `_vns`, and
-  `_vssse3` in version 3.13.0; see
+  version 3.12.0, and the ABI tags `_bics`, `_psp`, `_snul`, `_sbu8`, and `_ekmo` in version 3.13.0; see
  [`nlohmann` Namespace](../../features/namespace.md#structure).
@@ -121,7 +121,6 @@ being read.
 - [`JSON_STRICT_NUL_HANDLING`](macros/json_strict_nul_handling.md) - opt in to rejecting a NUL byte in the input
  instead of treating it as end of input
 - [`JSON_PRECISE_STREAM_POSITION`](macros/json_precise_stream_position.md) - opt in to leaving the stream positioned right after a number
- [`JSON_DISABLE_STREAM_BULK_SCAN`](macros/json_disable_stream_bulk_scan.md) - read the stream one character at a time

 ## Version history

@@ -134,6 +133,3 @@ being read.
  crash (`std::terminate`) when `i` has `eofbit` in its exception mask, in version 3.13.0.
 - Changed to the strong exception safety guarantee in version 3.13.0: `j` is no longer left with a partially parsed
  value if parsing throws.
- Scans the characters in the stream buffer of `i` in bulk in version 3.13.0; the position of `i` after the call is
-  unchanged ([`JSON_DISABLE_STREAM_BULK_SCAN`](macros/json_disable_stream_bulk_scan.md) restores reading one character
-  at a time).
@@ -86,8 +86,6 @@ Linear.
 ## See also

 - [dump](basic_json/dump.md) - serialize to a JSON-formatted string
- [`basic_json_view::operator<<`](basic_json_view/operator_ltlt.md) - the corresponding operator for
-  `basic_json_view`
 - [Serialization](../features/serialization.md) - the serialization article

 ## Version history
@@ -1,47 +0,0 @@
-# <small>nlohmann::</small>ordered_json_editable_document
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using ordered_json_editable_document = basic_json_document<ordered_json, true>;
-```
-
-This type is an **editable** [`basic_json_document`](basic_json_document/index.md) of the
-[`ordered_json`](ordered_json.md) specialization: [`set`](basic_json_document/set.md) and
-[`push_back`](basic_json_document/push_back.md) change values after parsing, as for
-[`json_editable_document`](json_editable_document.md), and
-[`materialize()`](basic_json_view/materialize.md) preserves the document order of object members -- including
-members [`set`](basic_json_document/set.md) added -- instead of sorting them like
-[`json_editable_document`](json_editable_document.md) does.
-
-## Examples
-
-??? example
-
-    The example below edits a document with `set`, then shows that `materialize()` keeps the member order of the
-    source text (with the new member at the end) for `ordered_json_editable_document`, where it would sort the
-    members alphabetically for [`json_editable_document`](json_editable_document.md).
-
-    ```cpp
-    --8<-- "examples/ordered_json_editable_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/ordered_json_editable_document.output"
-    ```
-
-## See also
-
- [ordered_json_editable_view](ordered_json_editable_view.md) - a view of a value of an
-  `ordered_json_editable_document`
- [ordered_json_document](ordered_json_document.md) - the read-only document this type adds edits to
- [json_editable_document](json_editable_document.md) - the corresponding editable document for the default `json`
-  specialization
- [Object Order](../features/object_order.md)
- [Edits](basic_json_document/index.md#edits) - what an edit guarantees
-
-## Version history
-
-Since version 3.13.0.
@@ -1,40 +0,0 @@
-# <small>nlohmann::</small>ordered_json_editable_view
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using ordered_json_editable_view = basic_json_view<ordered_json, true>;
-```
-
-This type is a [`basic_json_view`](basic_json_view/index.md) of a value of an
-[`ordered_json_editable_document`](ordered_json_editable_document.md), the corresponding view for
-[`ordered_json_view`](ordered_json_view.md) the way [`json_editable_view`](json_editable_view.md) is for
-[`json_view`](json_view.md).
-
-## Examples
-
-??? example
-
-    The example below is the same as [`ordered_json_editable_document`'s](ordered_json_editable_document.md): the
-    views `set` returns see the document's member order preserved on `materialize()`, unlike for a
-    [`json_editable_document`](json_editable_document.md).
-
-    ```cpp
-    --8<-- "examples/ordered_json_editable_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/ordered_json_editable_document.output"
-    ```
-
-## See also
-
- [ordered_json_editable_document](ordered_json_editable_document.md) - the document type this view refers into
- [ordered_json_view](ordered_json_view.md) - the corresponding read-only view
- [json_editable_view](json_editable_view.md) - the corresponding view for `json_editable_document`
-
-## Version history
-
-Since version 3.13.0.
@@ -135,9 +135,6 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
  headers are included.
 - [x] On Windows, the library is compiled with `<Windows.h>` being included to detect and avoid common bugs (see
  [`unit-windows_h.cpp`](https://github.com/nlohmann/json/blob/develop/tests/src/unit-windows_h.cpp)).
- [x] The library is compiled with Qt's keyword macros (`slots`, `signals`, `emit`, `foreach`, `forever`) being defined
-  to make sure it does not use them as identifiers (see
-  [`unit-qt_keywords.cpp`](https://github.com/nlohmann/json/blob/develop/tests/src/unit-qt_keywords.cpp)).
 - [x] The library is compiled with exceptions disabled to support alternative means of error handling.

 ## Stable public API
@@ -1,38 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json = nlohmann::json;
-using json_editable_document = nlohmann::json_editable_document;
-using json_editable_view = nlohmann::json_editable_view;
-
-int main()
-{
-    // a deprecated field is dropped from a configuration file, and a
-    // decommissioned replica is removed from the list -- "price" keeps its
-    // trailing zero, and the fields around the removed ones keep their order
-    const std::string text = R"({
-  "name": "cache",
-  "legacy_host": "db0",
-  "host": "db1",
-  "price": 19.90,
-  "replicas": ["db2", "db3", "db4"]
-})";
-
-    json_editable_document doc = json_editable_document::parse(text);
-
-    doc.erase(doc.root(), "legacy_host");                                      // (1) an object member
-    doc.erase(doc.root()["replicas"], 1);                                      // (2) an array element ("db3")
-    const std::size_t removed = doc.erase(json::json_pointer("/replicas/0"));  // (3) via a JSON pointer
-
-    std::cout << removed << '\n';
-    std::cout << doc.root().dump(2, ' ', false, json_editable_view::number_format::source) << "\n\n";
-
-    // the same edits on a plain json value: object_t is a std::map, so
-    // parsing already sorted the keys, and dump() rewrites every number to
-    // its shortest form, even "price", which was never touched
-    json plain = json::parse(text);
-    plain.erase("legacy_host");
-    plain["replicas"].erase(1);
-    plain["replicas"].erase(0);
-    std::cout << plain.dump(2) << '\n';
-}
@@ -1,18 +0,0 @@
-1
-{
-  "name": "cache",
-  "host": "db1",
-  "price": 19.90,
-  "replicas": [
-    "db4"
-  ]
-}
-
-{
-  "host": "db1",
-  "name": "cache",
-  "price": 19.9,
-  "replicas": [
-    "db4"
-  ]
-}
@@ -1,38 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json = nlohmann::json;
-using json_editable_document = nlohmann::json_editable_document;
-using json_editable_view = nlohmann::json_editable_view;
-
-int main()
-{
-    // a deployment plan -- "budget" is written with a trailing zero that has
-    // no effect on its value
-    const std::string text = R"({
-  "release": "2026.09",
-  "steps": ["build", "test", "deploy"],
-  "budget": 19.90
-})";
-
-    json_editable_document doc = json_editable_document::parse(text);
-
-    const std::size_t deploy_index = 2;
-    const auto deploy = doc.root()["steps"][deploy_index];  // held across the insert
-
-    doc.insert(doc.root()["steps"], deploy_index, "smoke-test"); // insert before "deploy"
-
-    // the held view still refers to "deploy", even though its index moved
-    // from 2 to 3, and nothing else in the document was touched
-    std::cout << deploy.dump() << '\n';
-    std::cout << doc.root().dump(2, ' ', false, json_editable_view::number_format::source) << "\n\n";
-
-    // the same edit on a plain json value: an index held from before the
-    // insert now refers to whatever moved into that slot, and dump()
-    // rewrites "budget" to its shortest form even though it was never
-    // touched
-    json plain = json::parse(text);
-    plain["steps"].insert(plain["steps"].begin() + static_cast<std::ptrdiff_t>(deploy_index), "smoke-test");
-    std::cout << plain["steps"][deploy_index].dump() << '\n';
-    std::cout << plain.dump(2) << '\n';
-}
@@ -1,23 +0,0 @@
-"deploy"
-{
-  "release": "2026.09",
-  "steps": [
-    "build",
-    "test",
-    "smoke-test",
-    "deploy"
-  ],
-  "budget": 19.90
-}
-
-"smoke-test"
-{
-  "budget": 19.9,
-  "release": "2026.09",
-  "steps": [
-    "build",
-    "test",
-    "smoke-test",
-    "deploy"
-  ]
-}
@@ -1,52 +0,0 @@
-#include <cstdint>
-#include <iostream>
-#include <string>
-#include <vector>
-#include <nlohmann/json_view.hpp>
-
-using json = nlohmann::json;
-using json_document = nlohmann::json_document;
-using image_check = json_document::image_check;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // the image of a parsed document -- as if read back from a cache file or
-    // received from another process running the same build of the library
-    const std::string text = R"({"name": "cache", "note": "caf\u00e9", "replicas": ["db2", "db3"]})";
-    const json_document parsed = json_document::parse(text);
-    const std::vector<std::uint8_t> image = parsed.save();
-
-    // (1)/(2) load() needs no parsing, yet dumps exactly what parsing did
-    const json_document borrowed = json_document::load(image);
-    std::cout << (borrowed.root().dump() == parsed.root().dump()) << '\n';
-    std::cout << borrowed.owns_source() << '\n'; // borrowed: still points into `image`
-
-    // (3) load(std::move(image)) keeps the vector instead of copying it
-    std::vector<std::uint8_t> to_move = image;
-    const json_document owned = json_document::load(std::move(to_move));
-    std::cout << owned.owns_source() << '\n';
-
-    // a damaged image -- the last byte of the decoded string "note" holds
-    // (an escape sequence, so it was unescaped into the document's own
-    // buffer), flipped, as storage or transport corruption might do
-    std::vector<std::uint8_t> damaged = image;
-    damaged[damaged.size() - 2] = 0xFF;
-
-    // image_check::full inspects strings and numbers, so it catches the damage
-    try
-    {
-        static_cast<void>(json_document::load(damaged, image_check::full));
-    }
-    catch (const json::parse_error& e)
-    {
-        std::cout << e.id << '\n';
-    }
-
-    // image_check::bounds only checks structure and bounds, so a cache the
-    // process already trusts loads without the extra scan -- reading a value
-    // the damage did not touch is still safe
-    const json_document trusted = json_document::load(damaged, image_check::bounds);
-    std::cout << trusted.root()["name"].get<std::string>() << '\n';
-}
@@ -1,5 +0,0 @@
-true
-false
-true
-116
-cache
@@ -1,24 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json = nlohmann::json;
-using json_editable_document = nlohmann::json_editable_document;
-
-int main()
-{
-    // "events" starts out null -- the first push_back() turns it into an
-    // array, exactly like set() turns a null object member into an object
-    json_editable_document doc = json_editable_document::parse(R"({"source": "sensor-1", "events": null})");
-
-    const auto first = doc.push_back(doc.root()["events"], json{{"type", "start"}, {"t", 0}});
-    for (int t = 1; t <= 3; ++t)
-    {
-        doc.push_back(doc.root()["events"], json{{"type", "tick"}, {"t", t}});
-    }
-
-    // push_back() never moves an existing element: a view taken from an
-    // earlier call still refers to the same element after later ones
-    std::cout << first.dump() << '\n';
-    std::cout << doc.root()["events"].size() << '\n';
-    std::cout << doc.root().dump(2) << '\n';
-}
Author	SHA1	Message	Date
Niels Lohmann	e7fc853e2d	Include materialize.hpp in the view builder test The test calls detail::view::materialize(), which only the single header pulled in; the multiple-header build (JSON_TEST_USING_MULTIPLE_HEADERS) failed with "'materialize' is not a member of detail::view". Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:49 +02:00
Niels Lohmann	4cc906e567	Address the review: null inline nodes, trait spelling, and max() in json_view - inline_nodes is null when the document has no inline nodes, instead of pointing past the end of the allocation; shrink_to_fit() no longer passes it to memcpy() for an empty node array - is_byte_char and is_wide_char use conjunction/disjunction, which astyle leaves unspaced - append_stream() uses (std::max) for the count read Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:48 +02:00
Niels Lohmann	99250c8275	Say that json_view converts integers while parsing Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:47 +02:00
Niels Lohmann	6d3f0dae96	Apply the review's wording fixes to the json_view documentation - Copying is disabled because of its cost, not because of two documents borrowing the same buffer; the unique_ptr follows from move-only. - Inputs: streams, FILE*, and wide characters (strings, arrays, pointers) are all supported and owned; point to parse_copy() for owned copies. - The error replay only runs for failing input, builds no values, and is skipped with allow_exceptions = false. - read() writes copied inputs into the previous owned copy. - Views can dangle like std::string_view, and why there is no shared/weak pointer design. - The 4 GiB limit (16-byte nodes, 16-byte scanner steps), streams being read to the end first, which macros apply, why materialize() has no source positions, and wording nits (accept() vs basic_json::accept(), is_binary, is_discarded, see-also lists, size table, "back into"). Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:46 +02:00
Niels Lohmann	bdb6966416	Address the review of the view builder and document Changes promised in the replies to the review of #5620: - read() reuses the owned copy: a copied input (an rvalue byte container, a stream, FILE, wide characters, an iterator range) is appended to the cleared owned buffer instead of a fresh std::string being move-assigned over it. A moved-in std::string still replaces it. - The error replay runs the library parser with a SAX handler that stores nothing and throws the reported exception, instead of BasicJsonType::parse(), which built a DOM up to the error. - Pointers to and arrays of wide characters, and FILE, take the input adapter path (converted to UTF-8 into an owned buffer) instead of failing a static_assert. Wide pointers are NUL-terminated. - Streams are read in blocks through rdbuf() into the buffer, instead of character by character through the input adapter; eofbit is set at the end, as by the library's stream adapter. - tape/tape_size/tape_cap are now nodes/node_count/node_capacity. - The builder's members get descriptive, m_-prefixed names. - The shallow frame stack is a std::array (in a wrapper with a user-provided constructor: -Weffc++ wants the member initialized, and value-initializing the 64 frames costs up to 30 % on small documents). - The value dispatch macro has no NEXT parameter; the switch is left with break, and the macro is undefined after its last use. - literal() and digits_exceed() deduce the length from the string literal; each literal has one helper; the two `if (!is_float)` blocks are merged. - arena_ensure() sits right before the writes; the decode arena is a std::vector<char>. - The builder records the deepest nesting, and materialize() sizes its stack from it once (growing it only if a subtree is deeper). - Comment fixes (hex4, slow_string, the NUL rule, put_utf8, 0 - m, the arena resize, grow()) and formatting (macro backslashes, digit cases, one power of ten per line, value_t assertion next to is_container()). - build_with's template parameters follow the builder's order. Greg's idea of keeping the source offset in `off` and the arena offset in `next` for escaped strings was measured and not adopted: string access got 7-18 % slower with a select, and 3.5-18 % slower with a branch-free field pick (Apple M-series, clang -O3), parsing was unchanged. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:45 +02:00
Niels Lohmann	fbc0cb1ce6	Regenerate the amalgamated headers Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:45 +02:00
Niels Lohmann	efe00e5b30	Silence a clang-tidy use-after-move finding in the json_view test const_text is const, so std::move does not move from it; the second call is part of the const rvalue test. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:44 +02:00
Niels Lohmann	d14408a527	Read the node array base after emit() in the view builder's open() emit() moves the node array when it grows, and the subtraction read base in the same expression, so the order was unspecified. MSVC Release builds without forced inlining read the old base; the container index then pointed outside the array and close() wrote out of bounds. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:43 +02:00
Niels Lohmann	b701e94ec3	Make json_view.hpp pass include-what-you-use ci_single_binaries runs IWYU with --error on every header. For json_view.hpp it suggested adding <array> (std::array is used), the headers that json.hpp already provides (abi_config, abi_macros, input_adapters, json_pointer, cpp_future, string_concat, value_t, json_fwd), and <version> for std::nullptr_t, and removing <cstddef>. - include <array> - keep <cstddef> (nullptr_t, size_t; IWYU attributes them to <version> and <cstring>) - tell IWYU not to suggest the headers that json.hpp provides: the amalgamated json_view.hpp only includes json.hpp, so including them here would duplicate their definitions - export json.hpp, keep macro_unscope.hpp, and drop the unused forward declaration of the document class Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:42 +02:00
Niels Lohmann	6f48fe3f9e	Make max_input_size a function (GCC -Wunused-const-variable) Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:41 +02:00
Niels Lohmann	7ed8cd593a	Check the steps of the deep-nesting test separately Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:40 +02:00
Niels Lohmann	26d51dbb64	Suppress Flawfinder's read() finding on the deleted overload Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:40 +02:00
Niels Lohmann	188971008b	Annotate intentional patterns in unit-json_view.cpp for clang-tidy Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:39 +02:00
Niels Lohmann	8ea9131d76	Fix clang-tidy findings in unit-json_view_builder.cpp Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:38 +02:00
Niels Lohmann	4ba9da2b1d	Give document_data a user-provided constructor Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:37 +02:00
Niels Lohmann	c8fb14213d	Fuzz json_document with exact-size buffers and parse options The fuzzer only parsed a std::string with default options. Also parse an exact-size byte vector, which has no NUL after its last byte and takes the bounds-checked path, and derive ignore_comments and ignore_trailing_commas from the first input byte, comparing against json::parse and json::accept with the same options. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:36 +02:00
Niels Lohmann	a64cb5e006	Align the banner comment of json_view.hpp Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:36 +02:00
Niels Lohmann	76d8513668	Remove the unused legacy_discarded_value_comparison from abi_config Nothing reads it: the view does not compare values. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:35 +02:00
Niels Lohmann	037d245df8	State the exact input size limit of json_document The check rejects inputs of 0xFFFFFFF0 bytes or more, but the exception message and the documentation said 4 GiB. Name the limit once (max_input_size), and state 4 GiB minus 16 bytes in the message and the documentation. Test the limit with a container that only claims the size. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:34 +02:00
Niels Lohmann	2b5f4fb96e	Check the node array size for overflow reserve(n) and the growth of the index computed n * sizeof(node) without a check, which wraps around on 32-bit targets for inputs of about 1 GiB and allocates a too small array. Throw std::bad_alloc for a count beyond the address space and clamp the growth step to it. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:33 +02:00
Niels Lohmann	8c28ef250e	Store node integers by halves on big-endian targets The non-little-endian path of the node writer wrote the integer's native word over len and next, so len got the high half there. Compose and split the value explicitly (len is the low half, next the high half); the little-endian path stays a plain memcpy. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:32 +02:00
Niels Lohmann	19c845aa82	Delete json_document::root() on temporary documents auto v = json_document::parse(text).root() compiled and left the view dangling. Delete the overload for rvalue documents, take a named document in the tests, and document the lifetime rule. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:32 +02:00
Niels Lohmann	a80897e895	Remove the conversion to bool from json_view explicit operator bool meant "refers to a value", which silently differs from what a basic_json converts to. Use !v.is_discarded() instead. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:31 +02:00
Niels Lohmann	ab1cc82bd1	Copy const rvalue strings and document the accepted inputs json_document::parse(std::move(const_string)) failed to compile with "no matching read_kind": only a non-const rvalue std::string can be moved from. Treat a const rvalue as a copied byte container. parse() does not accept everything BasicJsonType::parse() does: a FILE* and pointers to or arrays of wide characters are rejected at compile time. List the supported inputs instead. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:30 +02:00
Niels Lohmann	302ffe5c13	Reject integer lengths in json_document::parse parse(ptr, len) compiled: len converted to allow_exceptions, and ptr was read as a C string, past the end of a buffer without a terminating NUL. Delete the overloads of parse, parse_copy, accept, and read that take an integer other than bool where the flags are expected. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:29 +02:00
Niels Lohmann	32d3083585	Exclude libstdc++'s string_view comparison from the sign-change check basic_string_view::_S_compare stores the difference of two lengths in a signed difference_type on purpose, which -fsanitize=integer reports for every comparison with a shorter view (test-json_view_cpp17). Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:28 +02:00
Niels Lohmann	efbabe66fa	Fix document_data for old Clang (3.4-3.6) Drop the empty braced NSDMIs of the std::string members: old Clang rejects the defaulted constructor when it is used by a member initializer before the end of the class definition. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:27 +02:00
Niels Lohmann	481a9a216f	Add json_document and json_view: node index, parser, and document Add json_document and json_view, a read-only, zero-copy index of a JSON text, as the first public slice of the zero-copy view (#5295). A parse produces a flat array of 16-byte nodes in document order, one per value and one per object key. Strings stay in the source text; escaped strings are decoded into an arena. Integers are converted while their digits are in the cache; floats keep only their digit layout and are converted on read. Containers store the size of their subtree, so a reader can step over one in constant time. A document makes a handful of allocations, however many values it has. The parser accepts exactly what json::parse accepts, with every combination of ignore_comments and ignore_trailing_commas, with and without a trailing NUL, and under JSON_STRICT_NUL_HANDLING. It is portable C++11 and does not depend on byte order. basic_json_document adds parse, parse_copy, accept, read (reuses a document's memory), root, is_discarded, source, owns_source, node_count, memory_usage, and shrink_to_fit. basic_json_view adds type, the is_* queries, operator bool, size, empty, materialize, and source_offset. A parse error throws the same exception basic_json::parse would throw for the same input, message and position included. detail::abi_config keeps JSON_STRICT_NUL_HANDLING and JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON readable after json.hpp undefines them, in the ABI namespace so they always match the basic_json in use. A NUL byte that ends a // comment is the end of the input, as in parse() since #5696. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-17 08:30:27 +02:00