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Author SHA1 Message Date
Niels Lohmann 34f9be2aa2 docs: drop discarded-value remarks
Remove the mention that a discarded value cannot be serialized to CBOR
(type_error.321) from the exception-safety and mapping sections. The
integer table and all added prose already follow the table-format and
Oxford-comma rules.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 20:05:23 +01:00
Niels Lohmann 8c4818d5f7 Address review of the CBOR changes
Cite RFC 8949 Section 5.3.1 for duplicate keys, describe the out_of_range.408 condition precisely, rewrap a long line, and update the stale get_string comment (per-chunk UTF-8 check). single_include regenerated.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 17:56:22 +01:00
Niels Lohmann df1bca6dae Regenerate single_include and apply astyle
Result of make amalgamate (including make pretty) for the preceding changes.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 17:46:08 +01:00
Niels Lohmann b22cad367c docs: correct and extend the CBOR documentation
Fix the negative-integer rows (they used MessagePack boundaries), the
number_integer range of the 0x1B row, and the half-precision entry in the
list of unused types; correct the NaN history (0xF9 since 3.8.0) and the
tagged-item wording (only the tag directly in front of a byte string is
stored, and only in the 0xD8..0xDB form). Document that to_cbor is not
RFC 8949 deterministic, that duplicate keys are accepted (last wins),
tags in front of keys, per-chunk UTF-8 validation, the exceptions
parse_error.113, out_of_range.406/408 of from_cbor, the pointer and
C array input traps, the partially written output on exceptions, and the
store/ignore results in the binary values example. Drop the claim that
the CBOR reader needs StringType::append(const StringType&) and
BinaryType::insert(pos, first, last).

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 17:46:05 +01:00
Niels Lohmann 95169a63fa Skip CBOR tags in front of map keys and validate indefinite text chunks
A tag in front of a text string map key was rejected with parse_error.113
even with cbor_tag_handler_t::ignore or store, although tags in front of
values are handled. The tags are now skipped iteratively before the key is
read; the handler error still rejects them.

The chunks of an indefinite-length text string were concatenated before
the single UTF-8 check, so a code point split over two chunks, or an
invalid chunk, was accepted. RFC 8949, Section 3.2.3 requires every chunk
to be valid on its own. With error_handler_t::strict, replace and ignore
each chunk is now checked; keep is unchanged. The chunks are appended with
append(ptr, len), so StringType needs nothing new.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 17:46:05 +01:00
Niels Lohmann 2a56afc714 Fix VS 2015 build of the DOM parser (#5882) (#5916)
- Name std::hash only once the object type has emplace_new_key: VS 2015
  static-asserts on std::hash of a type without one (alt_string) instead of
  reporting a substitution failure (C2338).
- Replace the std::copy calls on frames by loops: VS 2015 reports raw
  pointers handed to std::copy as C4996, an error under /WX.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:08:58 +01:00
Niels Lohmann d176d8d61e Exclude single_include from flawfinder scan (#5912)
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:08:36 +01:00
Niels Lohmann 1cf5492bcd docs: byte layout sections, glossary entries, and QA page update (#5910)
* docs: byte layout sections, glossary, and QA page updates

- Move "Byte layout" of each binary format to its own section before
  "Serialization" and describe the idea of the format.
- Glossary: add LLDB and other terms used throughout the documentation.
- quality_assurance: correct Clang Static Analyzer and CMake entries; add
  CodeQL, Semgrep, Flawfinder, CIFuzz, OpenSSF Scorecard, REUSE, Meson/SwiftPM,
  and reproducibility checks.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* docs: drop unused length colour from CBOR and MessagePack byte layout legends

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:08:14 +01:00
Niels Lohmann 330fbead59 Document clang-tidy exclusions, drop unneeded ones, and clean up doc examples (#5909)
* Document clang-tidy exclusions and drop unneeded ones

Re-enable every excluded check in a run of clang-tidy 22 over all tests
and remove the seven that never fire (cert-err58-cpp,
clang-analyzer-webkit.NoUncountedMemberChecker,
cppcoreguidelines-virtual-class-destructor, google-readability-function-size,
hicpp-function-size, hicpp-no-assembler, readability-function-size).

Document the reason for every remaining exclusion at the top of the file.

Exclude in advance the checks that only exist in clang-tidy 23 and are
noise here (bugprone-signed-bitwise, *-explicit-constructor,
readability-trailing-comma, modernize-use-string-view), plus
modernize-use-integer-sign-comparison, which needs C++20 std::cmp_less
and flags deliberate casts.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Fix clang-tidy findings in documentation examples and replace redundant aliases

Apply clang-tidy fixes to the documentation examples:
- performance-avoid-endl: std::endl -> '\n'
- readability-qualified-auto: auto -> auto* / const auto*
- performance-for-range-copy: copy -> const reference
- google-readability-casting: C-style cast -> static_cast

Replace redundant aliases (readability-redundant-qualified-alias) such as
"using json = nlohmann::json;" with "using nlohmann::json;" in the
documentation, README, examples, tests, and benchmarks. Aliases at class
scope and aliases of other types (with_base_class_t etc.) are kept.

No changes to the library or its public API. All changed examples were
compiled and run; their output matches the stored .output files (except
max_size and meta, which depend on the platform and compiler).

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Format doc examples with the pinned astyle

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:07:51 +01:00
Niels Lohmann fe231dc692 docs: write std::chrono durations as unit/value objects; reword a title with escaped quotes (#5911)
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:07:32 +01:00
Niels Lohmann ffd4242dc2 Docs: fill documentation gaps found in user questions (#5907)
* Docs: fill documentation gaps found in user questions

Add pages on class-hierarchy/smart-pointer/variant/chrono recipes, working
without exceptions, and large, streamed and partial input. Extend the FAQ
(23 entries, Known bugs first), parse error documentation (empty-input
checklist, line/column, diagnostic positions), element access, conversions,
creating values, ADL troubleshooting, memory, and build/distribution notes.
Add 14 examples with generated output. Correct the statement that parse errors
cannot be recovered from with -fno-exceptions.

The topics come from recurring questions on Stack Overflow, Reddit, Hacker
News, YouTube, and the project's GitHub discussions and issues.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* docs: declare range-for lists in variables to keep astyle quiet

astyle reformats a braced init list placed directly in a range-for
header; declare the list first so check_amalgamation passes.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:07:13 +01:00
426 changed files with 3007 additions and 882 deletions

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+36 -7
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@@ -1,3 +1,33 @@
# Style or vendor rule sets that do not fit a header-only library:
# altera-*, fuchsia-*, llvmlibc-*, android-cloexec-fopen, boost-use-ranges, llvm-header-guard,
# llvm-include-order, llvm-prefer-static-over-anonymous-namespace, llvm-use-ranges,
# misc-use-anonymous-namespace, google-runtime-float, google-runtime-int, hicpp-signed-bitwise,
# bugprone-signed-bitwise, hicpp-explicit-conversions, google-explicit-constructor,
# cppcoreguidelines-explicit-constructor, misc-explicit-constructor (implicit conversions are the
# API), readability-trailing-comma,
# hicpp-avoid-goto / cppcoreguidelines-avoid-goto, hicpp-no-array-decay,
# hicpp-uppercase-literal-suffix, readability-uppercase-literal-suffix, modernize-use-trailing-return-type.
# Constructs the library needs on purpose (the library supports C++11 and legacy compilers):
# cppcoreguidelines-macro-usage, cppcoreguidelines-avoid-do-while (macros),
# cppcoreguidelines-pro-bounds-*, cppcoreguidelines-pro-type-reinterpret-cast,
# cppcoreguidelines-pro-type-union-access (parsers, serializers, basic_json's value union),
# cppcoreguidelines-avoid-const-or-ref-data-members, cppcoreguidelines-rvalue-reference-param-not-moved,
# cppcoreguidelines-avoid-non-const-global-variables, misc-non-private-member-variables-in-classes,
# misc-no-recursion (value walks are recursive, bounded by detail::recursion_depth_limit()),
# modernize-type-traits, modernize-use-constraints, modernize-use-ranges, modernize-use-std-numbers,
# modernize-use-designated-initializers, modernize-use-nodiscard, modernize-concat-nested-namespaces,
# readability-redundant-typename, readability-redundant-parentheses,
# readability-redundant-access-specifiers, readability-simplify-boolean-expr,
# readability-use-concise-preprocessor-directives, modernize-use-string-view,
# modernize-use-integer-sign-comparison (needs std::cmp_less; the flagged
# static_cast<std::size_t>(end - pos) < n comparisons are deliberate)
# (all need a newer standard or compiler than C++11, or would change macro-generated or
# deliberately explicit code).
# Too noisy to be useful (numeric parsing/formatting code, doctest, tests):
# bugprone-easily-swappable-parameters, cppcoreguidelines-avoid-magic-numbers, readability-magic-numbers,
# readability-identifier-length, readability-function-cognitive-complexity, performance-enum-size,
# concurrency-mt-unsafe, misc-confusable-identifiers, misc-include-cleaner (run on its own for
# the consumer headers in cmake/ci.cmake).
# portability-avoid-pragma-once: kept disabled on purpose. #pragma once is accepted
# by every supported compiler, and tools/amalgamate/amalgamate.py strips it from
# single_include, so there is nothing left to fix here.
@@ -10,14 +40,14 @@ Checks: '*,
-android-cloexec-fopen,
-boost-use-ranges,
-bugprone-easily-swappable-parameters,
-cert-err58-cpp,
-clang-analyzer-webkit.NoUncountedMemberChecker,
-bugprone-signed-bitwise,
-concurrency-mt-unsafe,
-cppcoreguidelines-avoid-const-or-ref-data-members,
-cppcoreguidelines-avoid-do-while,
-cppcoreguidelines-avoid-goto,
-cppcoreguidelines-avoid-magic-numbers,
-cppcoreguidelines-avoid-non-const-global-variables,
-cppcoreguidelines-explicit-constructor,
-cppcoreguidelines-macro-usage,
-cppcoreguidelines-pro-bounds-avoid-unchecked-container-access,
-cppcoreguidelines-pro-bounds-array-to-pointer-decay,
@@ -26,19 +56,15 @@ Checks: '*,
-cppcoreguidelines-pro-type-reinterpret-cast,
-cppcoreguidelines-pro-type-union-access,
-cppcoreguidelines-rvalue-reference-param-not-moved,
-cppcoreguidelines-virtual-class-destructor,
-fuchsia-default-arguments-calls,
-fuchsia-default-arguments-declarations,
-fuchsia-overloaded-operator,
-google-explicit-constructor,
-google-readability-function-size,
-google-runtime-float,
-google-runtime-int,
-hicpp-avoid-goto,
-hicpp-explicit-conversions,
-hicpp-function-size,
-hicpp-no-array-decay,
-hicpp-no-assembler,
-hicpp-signed-bitwise,
-hicpp-uppercase-literal-suffix,
-llvm-header-guard,
@@ -48,6 +74,7 @@ Checks: '*,
-llvmlibc-*,
-misc-use-anonymous-namespace,
-misc-confusable-identifiers,
-misc-explicit-constructor,
-misc-include-cleaner,
-misc-no-recursion,
-misc-non-private-member-variables-in-classes,
@@ -55,20 +82,22 @@ Checks: '*,
-modernize-type-traits,
-modernize-use-constraints,
-modernize-use-designated-initializers,
-modernize-use-integer-sign-comparison,
-modernize-use-nodiscard,
-modernize-use-ranges,
-modernize-use-string-view,
-modernize-use-std-numbers,
-modernize-use-trailing-return-type,
-performance-enum-size,
-portability-avoid-pragma-once,
-readability-function-cognitive-complexity,
-readability-function-size,
-readability-identifier-length,
-readability-magic-numbers,
-readability-redundant-access-specifiers,
-readability-redundant-parentheses,
-readability-redundant-typename,
-readability-simplify-boolean-expr,
-readability-trailing-comma,
-readability-uppercase-literal-suffix,
-readability-use-concise-preprocessor-directives'
+2 -1
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@@ -43,7 +43,8 @@ jobs:
- name: flawfinder_scan
uses: david-a-wheeler/flawfinder@c4216b74cf2639ffa98503768bd6e4299b5440c9 # v2.0.20
with:
arguments: '--sarif ./'
# single_include/ is omitted: it is generated from include/ and would report every finding twice
arguments: '--sarif ./cmake ./docs ./include ./src ./tests ./tools'
output: 'flawfinder_results.sarif'
- name: Upload analysis results to GitHub Security tab
+4 -4
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@@ -151,7 +151,7 @@ The `json` class provides an API for manipulating a JSON value. To create a `jso
```cpp
#include <fstream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
// ...
@@ -164,7 +164,7 @@ If using modules (enabled with `NLOHMANN_JSON_BUILD_MODULES`), this example beco
import std;
import nlohmann.json;
using json = nlohmann::json;
using nlohmann::json;
// ...
@@ -842,7 +842,7 @@ assert(p == p2);
To make this work with one of your types, you only need to provide two functions:
```cpp
using json = nlohmann::json;
using nlohmann::json;
namespace ns {
void to_json(json& j, const person& p) {
@@ -1257,7 +1257,7 @@ See the page [quality assurance](https://json.nlohmann.me/community/quality_assu
#include <nlohmann/json.hpp>
// for convenience
using json = nlohmann::json;
using nlohmann::json;
```
to the files you want to process JSON and set the necessary switches to enable C++11 (e.g., `-std=c++11` for GCC and Clang).
@@ -15,11 +15,13 @@ error
: report a parse error in case of a tag (the `from_cbor` overloads throw a `parse_error` exception by default)
ignore
: ignore tags
: ignore tags (also in front of a text string map key)
store
: store tagged byte strings (for bytes 0xd8..0xdb) as binary values with the tag as subtype; other tagged values are
read as if the tag were ignored. If several tags precede a byte string, only the innermost one is stored.
read as if the tag were ignored. If several tags precede a byte string, only the tag directly in front of it is
stored, and only when it has the form 0xd8..0xdb (a tag 0..23 written as 0xc0..0xd7 is skipped). Tags in front of a
text string map key are skipped.
## Examples
+12 -4
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@@ -32,8 +32,10 @@ The exact mapping and its limitations are described on a [dedicated page](../../
- an `std::istream` object
- a `FILE` pointer
- a C-style array of characters
- a pointer to a null-terminated string of single byte characters
- a C-style array of characters (its terminating NUL is read as trailing data: `parse_error.110` unless `strict` is
`false`)
- a pointer to a null-terminated string of single byte characters (read up to the first 0x00 byte, which is a valid
CBOR byte)
- a container `obj` for which `begin(obj)` and `end(obj)` produce a valid pair of iterators
(as found via ADL or member functions, with semantics compatible to `std::begin` and `std::end`)
@@ -89,8 +91,14 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from CBOR were
used in the given input or if the input is not valid CBOR
- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a map key is not a string (keys of
other types are not supported, as JSON object keys are always strings), or if a string value or object key is not
valid UTF-8 and `error_handler` is `strict`
other types are not supported, as JSON object keys are always strings), if the head of a string or byte string is
malformed (including a chunk of the wrong type or an indefinite-length string nested inside an indefinite-length
string), or if a string value or object key (or one chunk of an indefinite-length string) is not valid UTF-8 and
`error_handler` is `strict`
- Throws [out_of_range.408](../../home/exceptions.md#jsonexceptionout_of_range408) if an array or map announces
a length that `std::size_t` cannot hold, or that equals `std::size_t(-1)` (for example `9B FF FF FF FF FF FF FF FF`)
- Throws [out_of_range.406](../../home/exceptions.md#jsonexceptionout_of_range406) if a floating-point number does not
fit into `number_float_t`
## Complexity
+1 -1
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@@ -45,7 +45,7 @@ Constant.
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+2 -1
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@@ -42,7 +42,8 @@ The exact mapping and its limitations are described on a [dedicated page](../../
## Exception safety
Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
Strong guarantee: if an exception is thrown, there are no changes in the JSON value. Bytes that were already written to
the output adapter are not taken back.
## Exceptions
+2 -2
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@@ -38,7 +38,7 @@ Therefore, assertions can be switched off by defining `NDEBUG`.
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -64,7 +64,7 @@ Therefore, assertions can be switched off by defining `NDEBUG`.
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -79,7 +79,7 @@ The default value is `0` (disabled — existing behavior is preserved).
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -98,7 +98,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#define JSON_BRACE_INIT_COPY_SEMANTICS 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -54,7 +54,7 @@ The default value is `0` (disabled, the deprecated functions can still be called
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -72,7 +72,7 @@ The default value is `0` (disabled, the deprecated functions can still be called
#define JSON_DELETE_DEPRECATED_FUNCTIONS 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -39,7 +39,7 @@ The default value is `0`.
#define JSON_DISABLE_ENUM_SERIALIZATION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
enum class Choice
{
@@ -66,7 +66,7 @@ The default value is `0`.
#define JSON_DISABLE_ENUM_SERIALIZATION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
enum class Choice
{
@@ -99,7 +99,7 @@ The default value is `0`.
#define JSON_DISABLE_ENUM_SERIALIZATION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
enum class Choice
{
@@ -92,7 +92,7 @@ The default value is `0`: streams are scanned in bulk.
#include <sstream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -115,7 +115,7 @@ The default value is `0`: streams are scanned in bulk.
#include <sstream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -72,7 +72,7 @@ The default value is `0` (disabled — existing behavior is preserved).
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -89,7 +89,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -73,7 +73,7 @@ The default value is `0`: the file is locked once and read with the unlocked std
#include <cstdio>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -92,7 +92,7 @@ The default value is `0`: the file is locked once and read with the unlocked std
#include <cstdio>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+1 -1
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@@ -61,7 +61,7 @@ By default, `#!cpp JSON_NO_SIMD` is not defined, and vector instructions are use
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -94,7 +94,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#include <sstream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -115,7 +115,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#include <sstream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -64,7 +64,7 @@ The default value is `0` (disabled, the behavior of version 3.12.0 and earlier i
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -81,7 +81,7 @@ The default value is `0` (disabled, the behavior of version 3.12.0 and earlier i
#define JSON_STRICT_BINARY_UTF8 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -92,7 +92,7 @@ The default value is `0` (disabled — existing behavior is preserved).
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -109,7 +109,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#define JSON_STRICT_NUL_HANDLING 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -77,7 +77,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#include <map>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
enum TaskState { TS_STOPPED, TS_RUNNING, TS_COMPLETED };
@@ -105,7 +105,7 @@ The default value is `0` (disabled — existing behavior is preserved).
#include <map>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
enum TaskState { TS_STOPPED, TS_RUNNING, TS_COMPLETED };
@@ -188,10 +188,13 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
```
- [x] The code is checked with the latest [Cppcheck](https://cppcheck.sourceforge.io) with all warnings enabled.
- [x] The code is checked with the latest [Clang Static Analyzer](https://clang-analyzer.llvm.org) with 89 enabled
rules.
- [x] The code is checked with the latest [Clang Static Analyzer](https://clang-analyzer.llvm.org) with 52 enabled
checkers.
- [x] The code is checked with [Infer](https://fbinfer.com).
- [x] The code is checked with [Codacy](https://app.codacy.com/gh/nlohmann/json/dashboard).
- [x] The code is scanned with [CodeQL](https://codeql.github.com), [Semgrep](https://semgrep.dev), and
[Flawfinder](https://dwheeler.com/flawfinder/) on every push and pull request and on a schedule; the findings are
reported to GitHub's code scanning.
## Dynamic analysis
@@ -204,6 +207,8 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
- [x] The test suite is executed with [Valgrind](https://valgrind.org) (Memcheck) to detect memory leaks.
- [x] The test suite is executed with [Sanitizers](https://github.com/google/sanitizers) (address sanitizer, undefined
behavior sanitizer, integer overflow detection, nullability violations).
- [x] The fuzz targets are run with [CIFuzz](https://google.github.io/oss-fuzz/getting-started/continuous-integration/)
on every pull request to catch regressions before they are merged.
## Dependencies
@@ -223,6 +228,8 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
No release is made while such an alert is open.
- [x] Third-party code included in the repository for testing, such as [doctest](https://github.com/doctest/doctest),
is updated manually.
- [x] The repository is evaluated with the [OpenSSF Scorecard](https://securityscorecards.dev) on a schedule and on
every push to the default branch, and the results are reported to GitHub's code scanning.
## Style check
@@ -258,4 +265,21 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
- [x] The library is tested against relevant CMake versions:
- CMake 3.5 (the earliest supported)
- CMake 3.31.6 (the latest 3.x release)
- CMake 4.0.0 (a very recent release)
- CMake 4.0.0 (the first 4.x release)
!!! success "Requirement: Other build systems"
The library can be used with build systems and package managers other than CMake.
- [x] The library can be consumed with [Meson](https://json.nlohmann.me/integration/package_managers/) and the Swift
Package Manager; the installation with Meson and the resolution of `Package.swift` are tested in the CI.
!!! success "Requirement: Reproducible and verifiable builds"
The library can be built and tested without network access or a Git checkout, and its licensing is machine-readable.
- [x] The test suite is executed from an exported source tree without the `.git` directory and with the test data
being available offline.
- [x] The test suite is executed without the tests that change installed files to check that builds are reproducible.
- [x] The repository is checked for compliance with the [REUSE specification](https://reuse.software) so that the
license and copyright of every file is machine-readable.
- [x] The documentation is built with warnings treated as errors, and its links are checked regularly.
+1 -1
View File
@@ -2,7 +2,7 @@
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -2,7 +2,7 @@
#include <vector>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+3 -3
View File
@@ -2,19 +2,19 @@
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
// a valid JSON text
auto valid_text = R"(
const auto* valid_text = R"(
{
"numbers": [1, 2, 3]
}
)";
// an invalid JSON text
auto invalid_text = R"(
const auto* invalid_text = R"(
{
"strings": ["extra", "comma", ]
}
@@ -2,7 +2,7 @@
#include <string>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+1 -1
View File
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+2 -2
View File
@@ -2,9 +2,9 @@
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
std::cout << std::boolalpha << std::is_same<std::vector<json>, json::array_t>::value << std::endl;
std::cout << std::boolalpha << std::is_same<std::vector<json>, json::array_t>::value << '\n';
}
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
using namespace nlohmann::literals;
int main()
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
using namespace nlohmann::literals;
int main()
@@ -3,7 +3,7 @@
#include <nlohmann/json.hpp>
using namespace std::string_view_literals;
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -3,7 +3,7 @@
#include <nlohmann/json.hpp>
using namespace std::string_view_literals;
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+1 -1
View File
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+1 -1
View File
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using ordered_json = nlohmann::ordered_json;
using nlohmann::json;
using nlohmann::ordered_json;
int main()
{
@@ -8,7 +8,7 @@
#include <valarray>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -2,7 +2,7 @@
#include <nlohmann/json.hpp>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,7 +2,7 @@
#include <utility>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,9 +1,9 @@
#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;
using nlohmann::json;
using nlohmann::json_editable_document;
using nlohmann::json_editable_view;
int main()
{
@@ -1,9 +1,9 @@
#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;
using nlohmann::json;
using nlohmann::json_editable_document;
using nlohmann::json_editable_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -4,8 +4,8 @@
#include <vector>
#include <nlohmann/json_view.hpp>
using json = nlohmann::json;
using json_document = nlohmann::json_document;
using nlohmann::json;
using nlohmann::json_document;
using image_check = json_document::image_check;
int main()
@@ -2,7 +2,7 @@
#include <string>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,7 +2,7 @@
#include <string>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -3,7 +3,7 @@
#include <nlohmann/json.hpp>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
json_document parse_from_temporary_buffer()
{
@@ -2,7 +2,7 @@
#include <vector>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json = nlohmann::json;
using json_editable_document = nlohmann::json_editable_document;
using nlohmann::json;
using nlohmann::json_editable_document;
int main()
{
@@ -3,7 +3,7 @@
#include <vector>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -4,7 +4,7 @@
#include <vector>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,9 +1,9 @@
#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;
using nlohmann::json;
using nlohmann::json_editable_document;
using nlohmann::json_editable_view;
int main()
{
@@ -3,7 +3,7 @@
#include <string>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,7 +2,7 @@
#include <string>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
using json_pointer = nlohmann::json::json_pointer;
int main()
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,8 +2,8 @@
#include <numeric>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -2,8 +2,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
using json_pointer = nlohmann::json::json_pointer;
int main()
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -3,8 +3,8 @@
#include <string>
#include <vector>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
// address has no direct conversion in get<T>(), so get<address>() falls back
// to materialize().get<address>() -- a real nlohmann::json value is built
@@ -2,8 +2,8 @@
#include <nlohmann/json_view.hpp>
#include <string>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -2,8 +2,8 @@
#include <nlohmann/json_view.hpp>
#include <string>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,7 +2,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
using json_pointer = nlohmann::json::json_pointer;
int main()
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json = nlohmann::json;
using nlohmann::json_document;
using nlohmann::json;
int main()
{
@@ -2,8 +2,8 @@
#include <iomanip>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,9 +1,9 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using ordered_json_document = nlohmann::ordered_json_document;
using json = nlohmann::json;
using nlohmann::json_document;
using nlohmann::ordered_json_document;
using nlohmann::json;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,7 +2,7 @@
#include <string>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using nlohmann::json_document;
int main()
{
@@ -2,8 +2,8 @@
#include <nlohmann/json_view.hpp>
#include <string>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
int main()
{
@@ -1,8 +1,8 @@
#include <iostream>
#include <nlohmann/json_view.hpp>
using json_document = nlohmann::json_document;
using json_view = nlohmann::json_view;
using nlohmann::json_document;
using nlohmann::json_view;
using json_pointer = nlohmann::json::json_pointer;
int main()
+1 -1
View File
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
+2 -2
View File
@@ -1,7 +1,7 @@
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -12,5 +12,5 @@ int main()
json j = json::binary(vec, 42);
// output type and subtype
std::cout << "type: " << j.type_name() << ", subtype: " << j.get_binary().subtype() << std::endl;
std::cout << "type: " << j.type_name() << ", subtype: " << j.get_binary().subtype() << '\n';
}
+2 -2
View File
@@ -2,9 +2,9 @@
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
std::cout << std::boolalpha << std::is_same<nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>, json::binary_t>::value << std::endl;
std::cout << std::boolalpha << std::is_same<nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>, json::binary_t>::value << '\n';
}
+2 -2
View File
@@ -2,9 +2,9 @@
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using nlohmann::json;
int main()
{
std::cout << std::boolalpha << std::is_same<bool, json::boolean_t>::value << std::endl;
std::cout << std::boolalpha << std::is_same<bool, json::boolean_t>::value << '\n';
}
@@ -4,7 +4,7 @@
// define a byte container based on std::vector
using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
using json = nlohmann::json;
using nlohmann::json;
int main()
{
@@ -19,5 +19,5 @@ int main()
// (3) create container with subtype
auto c3 = byte_container_with_subtype(bytes, 42);
std::cout << json(c1) << "\n" << json(c2) << "\n" << json(c3) << std::endl;
std::cout << json(c1) << "\n" << json(c2) << "\n" << json(c3) << '\n';
}
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