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Merge branches 'develop' and 'mkdocs' of https://github.com/nlohmann/json into mkdocs

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Niels Lohmann 2020-06-04 13:07:20 +02:00
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10
.circleci/config.yml
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@ -10,12 +10,9 @@ jobs:
- run:
name: Install required tools
command: 'apt-get update && apt-get install -y gcc g++ git cmake'
- run:
name: Show versions
command: 'g++ --version ; uname -a; cmake --version'
- run:
name: Run CMake
command: 'mkdir build ; cd build ; cmake ..'
command: 'mkdir build ; cd build ; cmake .. -DJSON_BuildTests=On'
- run:
name: Compile
command: 'cmake --build build'
@ -33,12 +30,9 @@ jobs:
- run:
name: Install required tools
command: 'pacman -Sy --noconfirm base base-devel gcc git cmake'
- run:
name: Show versions
command: 'g++ --version ; uname -a; cmake --version'
- run:
name: Run CMake
command: 'mkdir build ; cd build ; cmake ..'
command: 'mkdir build ; cd build ; cmake .. -DJSON_BuildTests=On'
- run:
name: Compile
command: 'cmake --build build'

1
.github/ISSUE_TEMPLATE/Feature_request.md vendored
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@ -14,4 +14,3 @@ assignees: ''
#### How would the feature be usable for other users?
<!-- Include sample usage where appropriate. -->

6
.github/ISSUE_TEMPLATE/question.md vendored
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@ -7,6 +7,8 @@ assignees: ''
---
<!-- Provide a concise summary of the issue in the title above. -->
#### What do you want to achieve?
<!-- Please describe the feature as detailed as possible. -->
@ -17,6 +19,10 @@ assignees: ''
<!-- There is a full documentation of the API: https://nlohmann.github.io/json/ -->
<!-- There is a detailed README file: https://github.com/nlohmann/json/blob/develop/README.md -->
#### Can you provide a small code example?
<!-- Please understand that we cannot analyze and debug large code bases. -->
#### Which compiler and operating system are you using?
<!-- Include as many relevant details about the environment you experienced the bug in. -->

2
.github/workflows/macos.yml vendored
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@ -10,7 +10,7 @@ jobs:
steps:
- uses: actions/checkout@v1
- name: cmake
run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug
run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
- name: build
run: cmake --build build --parallel 10
- name: test

2
.github/workflows/ubuntu.yml vendored
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@ -10,7 +10,7 @@ jobs:
steps:
- uses: actions/checkout@v1
- name: cmake
run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug
run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
- name: build
run: cmake --build build --parallel 10
- name: test

2
.github/workflows/windows.yml vendored
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@ -10,7 +10,7 @@ jobs:
steps:
- uses: actions/checkout@v1
- name: cmake
run: cmake -S . -B build -G "Visual Studio 16 2019" -D CMAKE_BUILD_TYPE=Debug
run: cmake -S . -B build -G "Visual Studio 16 2019" -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
- name: build
run: cmake --build build --parallel 10
- name: test

6
.travis.yml
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@ -321,13 +321,9 @@ script:
# by default, use the single-header version
- if [[ "${MULTIPLE_HEADERS}" == "" ]]; then export MULTIPLE_HEADERS=OFF; fi
# show OS/compiler version
- uname -a
- $CXX --version
# compile and execute unit tests
- mkdir -p build && cd build
- cmake .. ${CMAKE_OPTIONS} -DJSON_MultipleHeaders=${MULTIPLE_HEADERS} -GNinja && cmake --build . --config Release
- cmake .. ${CMAKE_OPTIONS} -DJSON_MultipleHeaders=${MULTIPLE_HEADERS} -DJSON_BuildTests=On -GNinja && cmake --build . --config Release
- ctest -C Release --timeout 2700 -V -j
- cd ..

92
Makefile
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@ -116,7 +116,7 @@ pedantic_clang:
-Wno-padded \
-Wno-range-loop-analysis \
-Wno-switch-enum -Wno-covered-switch-default \
-Wno-weak-vtables" cmake -S . -B build_pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON
-Wno-weak-vtables" cmake -S . -B build_pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On
cmake --build build_pedantic
# calling GCC with most warnings
@ -124,13 +124,37 @@ pedantic_gcc:
rm -fr build_pedantic
CXXFLAGS=" \
-std=c++11 \
-pedantic \
-Werror \
--all-warnings \
--extra-warnings \
-W \
-Wno-abi-tag \
-Waddress \
-Waddress-of-packed-member \
-Wno-aggregate-return \
-Waggressive-loop-optimizations \
-Waligned-new=all \
-Wall \
-Walloc-zero \
-Walloca \
-Wanalyzer-double-fclose \
-Wanalyzer-double-free \
-Wanalyzer-exposure-through-output-file \
-Wanalyzer-file-leak \
-Wanalyzer-free-of-non-heap \
-Wanalyzer-malloc-leak \
-Wanalyzer-null-argument \
-Wanalyzer-null-dereference \
-Wanalyzer-possible-null-argument \
-Wanalyzer-possible-null-dereference \
-Wanalyzer-stale-setjmp-buffer \
-Wanalyzer-tainted-array-index \
-Wanalyzer-too-complex \
-Wanalyzer-unsafe-call-within-signal-handler \
-Wanalyzer-use-after-free \
-Wanalyzer-use-of-pointer-in-stale-stack-frame \
-Warith-conversion \
-Warray-bounds \
-Warray-bounds=2 \
-Wattribute-alias=2 \
@ -140,8 +164,16 @@ pedantic_gcc:
-Wbool-operation \
-Wbuiltin-declaration-mismatch \
-Wbuiltin-macro-redefined \
-Wc++0x-compat \
-Wc++11-compat \
-Wc++14-compat \
-Wc++17-compat \
-Wc++1z-compat \
-Wc++20-compat \
-Wc++2a-compat \
-Wcannot-profile \
-Wcast-align \
-Wcast-align=strict \
-Wcast-function-type \
-Wcast-qual \
-Wcatch-value=3 \
@ -149,6 +181,7 @@ pedantic_gcc:
-Wclass-conversion \
-Wclass-memaccess \
-Wclobbered \
-Wcomma-subscript \
-Wcomment \
-Wcomments \
-Wconditionally-supported \
@ -175,20 +208,20 @@ pedantic_gcc:
-Wendif-labels \
-Wenum-compare \
-Wexpansion-to-defined \
-Werror \
-Wextra \
-Wextra-semi \
-Wfloat-conversion \
-Wformat \
-Wformat-contains-nul \
-Wformat-extra-args \
-Wformat-nonliteral \
-Wfloat-equal \
-Wformat -Wformat-contains-nul \
-Wformat -Wformat-extra-args \
-Wformat -Wformat-nonliteral \
-Wformat -Wformat-security \
-Wformat -Wformat-y2k \
-Wformat -Wformat-zero-length \
-Wformat-diag \
-Wformat-overflow=2 \
-Wformat-security \
-Wformat-signedness \
-Wformat-truncation=2 \
-Wformat-y2k \
-Wformat-zero-length \
-Wformat=2 \
-Wframe-address \
-Wfree-nonheap-object \
@ -197,6 +230,7 @@ pedantic_gcc:
-Wignored-attributes \
-Wignored-qualifiers \
-Wimplicit-fallthrough=5 \
-Winaccessible-base \
-Winherited-variadic-ctor \
-Winit-list-lifetime \
-Winit-self \
@ -209,33 +243,25 @@ pedantic_gcc:
-Wliteral-suffix \
-Wlogical-not-parentheses \
-Wlogical-op \
-Wno-long-long \
-Wlto-type-mismatch \
-Wmain \
-Wmaybe-uninitialized \
-Wmemset-elt-size \
-Wmemset-transposed-args \
-Wmisleading-indentation \
-Wmismatched-tags \
-Wmissing-attributes \
-Wmissing-braces \
-Wmissing-declarations \
-Wmissing-field-initializers \
-Wmissing-format-attribute \
-Wmissing-include-dirs \
-Wmissing-noreturn \
-Wmissing-profile \
-Wmultichar \
-Wmultiple-inheritance \
-Wmultistatement-macros \
-Wnarrowing \
-Wno-deprecated-declarations \
-Wno-float-equal \
-Wno-long-long \
-Wno-namespaces \
-Wno-padded \
-Wno-switch-enum \
-Wno-system-headers \
-Wno-templates \
-Wno-undef \
-Wnarrowing \
-Wno-noexcept \
-Wnoexcept-type \
-Wnon-template-friend \
@ -243,7 +269,7 @@ pedantic_gcc:
-Wnonnull \
-Wnonnull-compare \
-Wnonportable-cfstrings \
-Wnormalized \
-Wnormalized=nfkc \
-Wnull-dereference \
-Wodr \
-Wold-style-cast \
@ -254,6 +280,7 @@ pedantic_gcc:
-Wpacked \
-Wpacked-bitfield-compat \
-Wpacked-not-aligned \
-Wno-padded \
-Wparentheses \
-Wpedantic \
-Wpessimizing-move \
@ -266,6 +293,7 @@ pedantic_gcc:
-Wpsabi \
-Wredundant-decls \
-Wredundant-move \
-Wredundant-tags \
-Wregister \
-Wreorder \
-Wrestrict \
@ -273,9 +301,6 @@ pedantic_gcc:
-Wreturn-type \
-Wscalar-storage-order \
-Wsequence-point \
-Wshadow \
-Wshadow-compatible-local \
-Wshadow-local \
-Wshadow=compatible-local \
-Wshadow=global \
-Wshadow=local \
@ -291,9 +316,13 @@ pedantic_gcc:
-Wsizeof-pointer-div \
-Wsizeof-pointer-memaccess \
-Wstack-protector \
-Wstrict-aliasing \
-Wstrict-aliasing=3 \
-Wstrict-null-sentinel \
-Wstrict-overflow \
-Wstrict-overflow=5 \
-Wstring-compare \
-Wstringop-overflow \
-Wstringop-overflow=4 \
-Wstringop-truncation \
-Wsubobject-linkage \
@ -309,14 +338,19 @@ pedantic_gcc:
-Wswitch \
-Wswitch-bool \
-Wswitch-default \
-Wno-switch-enum \
-Wswitch-outside-range \
-Wswitch-unreachable \
-Wsync-nand \
-Wsynth \
-Wno-system-headers \
-Wtautological-compare \
-Wno-templates \
-Wterminate \
-Wtrampolines \
-Wtrigraphs \
-Wtype-limits \
-Wundef \
-Wuninitialized \
-Wunknown-pragmas \
-Wunreachable-code \
@ -340,10 +374,12 @@ pedantic_gcc:
-Wvirtual-inheritance \
-Wvirtual-move-assign \
-Wvla \
-Wvolatile \
-Wvolatile-register-var \
-Wwrite-strings \
-Wzero-as-null-pointer-constant \
" cmake -S . -B build_pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON
-Wzero-length-bounds \
" cmake -S . -B build_pedantic -GNinja -DCMAKE_BUILD_TYPE=Debug -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On
cmake --build build_pedantic
##########################################################################
@ -353,7 +389,7 @@ pedantic_gcc:
run_benchmarks:
rm -fr build_benchmarks
mkdir build_benchmarks
cd build_benchmarks ; cmake ../benchmarks -GNinja -DCMAKE_BUILD_TYPE=Release
cd build_benchmarks ; cmake ../benchmarks -GNinja -DCMAKE_BUILD_TYPE=Release -DJSON_BuildTests=On
cd build_benchmarks ; ninja
cd build_benchmarks ; ./json_benchmarks
@ -430,7 +466,7 @@ cppcheck:
clang_analyze:
rm -fr clang_analyze_build
mkdir clang_analyze_build
cd clang_analyze_build ; CCC_CXX=$(COMPILER_DIR)/clang++ CXX=$(COMPILER_DIR)/clang++ $(COMPILER_DIR)/scan-build cmake .. -GNinja
cd clang_analyze_build ; CCC_CXX=$(COMPILER_DIR)/clang++ CXX=$(COMPILER_DIR)/clang++ $(COMPILER_DIR)/scan-build cmake .. -GNinja -DJSON_BuildTests=On
cd clang_analyze_build ; \
$(COMPILER_DIR)/scan-build \
-enable-checker alpha.core.BoolAssignment,alpha.core.CallAndMessageUnInitRefArg,alpha.core.CastSize,alpha.core.CastToStruct,alpha.core.Conversion,alpha.core.DynamicTypeChecker,alpha.core.FixedAddr,alpha.core.PointerArithm,alpha.core.PointerSub,alpha.core.SizeofPtr,alpha.core.StackAddressAsyncEscape,alpha.core.TestAfterDivZero,alpha.deadcode.UnreachableCode,core.builtin.BuiltinFunctions,core.builtin.NoReturnFunctions,core.CallAndMessage,core.DivideZero,core.DynamicTypePropagation,core.NonnilStringConstants,core.NonNullParamChecker,core.NullDereference,core.StackAddressEscape,core.UndefinedBinaryOperatorResult,core.uninitialized.ArraySubscript,core.uninitialized.Assign,core.uninitialized.Branch,core.uninitialized.CapturedBlockVariable,core.uninitialized.UndefReturn,core.VLASize,cplusplus.InnerPointer,cplusplus.Move,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,cplusplus.SelfAssignment,deadcode.DeadStores,nullability.NullableDereferenced,nullability.NullablePassedToNonnull,nullability.NullableReturnedFromNonnull,nullability.NullPassedToNonnull,nullability.NullReturnedFromNonnull \
@ -472,7 +508,7 @@ oclint:
clang_sanitize:
rm -fr clang_sanitize_build
mkdir clang_sanitize_build
cd clang_sanitize_build ; CXX=$(COMPILER_DIR)/clang++ cmake .. -DJSON_Sanitizer=On -DJSON_MultipleHeaders=ON -GNinja
cd clang_sanitize_build ; CXX=$(COMPILER_DIR)/clang++ cmake .. -DJSON_Sanitizer=On -DJSON_MultipleHeaders=ON -DJSON_BuildTests=On -GNinja
cd clang_sanitize_build ; ninja
cd clang_sanitize_build ; ctest -j10

80
README.md
View file

@ -12,13 +12,13 @@
[![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/nlohmann/json.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/nlohmann/json/context:cpp)
[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/json.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:json)
[![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://wandbox.org/permlink/3lCHrFUZANONKv7a)
[![Documentation](https://img.shields.io/badge/docs-doxygen-blue.svg)](http://nlohmann.github.io/json)
[![Documentation](https://img.shields.io/badge/docs-doxygen-blue.svg)](https://nlohmann.github.io/json/doxygen/index.html)
[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/nlohmann/json/master/LICENSE.MIT)
[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fnlohmann%2Fjson.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fnlohmann%2Fjson?ref=badge_shield)
[![GitHub Releases](https://img.shields.io/github/release/nlohmann/json.svg)](https://github.com/nlohmann/json/releases)
[![GitHub Downloads](https://img.shields.io/github/downloads/nlohmann/json/total)](https://github.com/nlohmann/json/releases)
[![GitHub Issues](https://img.shields.io/github/issues/nlohmann/json.svg)](http://github.com/nlohmann/json/issues)
[![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/nlohmann/json.svg)](http://isitmaintained.com/project/nlohmann/json "Average time to resolve an issue")
[![GitHub Issues](https://img.shields.io/github/issues/nlohmann/json.svg)](https://github.com/nlohmann/json/issues)
[![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/nlohmann/json.svg)](https://isitmaintained.com/project/nlohmann/json "Average time to resolve an issue")
[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/289/badge)](https://bestpractices.coreinfrastructure.org/projects/289)
[![GitHub Sponsors](https://img.shields.io/badge/GitHub-Sponsors-ff69b4)](https://github.com/sponsors/nlohmann)
@ -55,7 +55,7 @@ There are myriads of [JSON](https://json.org) libraries out there, and each may
- **Trivial integration**. Our whole code consists of a single header file [`json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp). That's it. No library, no subproject, no dependencies, no complex build system. The class is written in vanilla C++11. All in all, everything should require no adjustment of your compiler flags or project settings.
- **Serious testing**. Our class is heavily [unit-tested](https://github.com/nlohmann/json/tree/develop/test/src) and covers [100%](https://coveralls.io/r/nlohmann/json) of the code, including all exceptional behavior. Furthermore, we checked with [Valgrind](http://valgrind.org) and the [Clang Sanitizers](https://clang.llvm.org/docs/index.html) that there are no memory leaks. [Google OSS-Fuzz](https://github.com/google/oss-fuzz/tree/master/projects/json) additionally runs fuzz tests against all parsers 24/7, effectively executing billions of tests so far. To maintain high quality, the project is following the [Core Infrastructure Initiative (CII) best practices](https://bestpractices.coreinfrastructure.org/projects/289).
- **Serious testing**. Our class is heavily [unit-tested](https://github.com/nlohmann/json/tree/develop/test/src) and covers [100%](https://coveralls.io/r/nlohmann/json) of the code, including all exceptional behavior. Furthermore, we checked with [Valgrind](https://valgrind.org) and the [Clang Sanitizers](https://clang.llvm.org/docs/index.html) that there are no memory leaks. [Google OSS-Fuzz](https://github.com/google/oss-fuzz/tree/master/projects/json) additionally runs fuzz tests against all parsers 24/7, effectively executing billions of tests so far. To maintain high quality, the project is following the [Core Infrastructure Initiative (CII) best practices](https://bestpractices.coreinfrastructure.org/projects/289).
Other aspects were not so important to us:
@ -148,7 +148,7 @@ Example:
include(FetchContent)
FetchContent_Declare(json
GIT_REPOSITORY https://github.com/nlohmann/json
GIT_REPOSITORY https://github.com/nlohmann/json.git
GIT_TAG v3.7.3)
FetchContent_GetProperties(json)
@ -199,9 +199,9 @@ endif()
### Package Managers
:beer: If you are using OS X and [Homebrew](http://brew.sh), just type `brew tap nlohmann/json` and `brew install nlohmann-json` and you're set. If you want the bleeding edge rather than the latest release, use `brew install nlohmann-json --HEAD`.
:beer: If you are using OS X and [Homebrew](https://brew.sh), just type `brew tap nlohmann/json` and `brew install nlohmann-json` and you're set. If you want the bleeding edge rather than the latest release, use `brew install nlohmann-json --HEAD`.
If you are using the [Meson Build System](http://mesonbuild.com), add this source tree as a [meson subproject](https://mesonbuild.com/Subprojects.html#using-a-subproject). You may also use the `include.zip` published in this project's [Releases](https://github.com/nlohmann/json/releases) to reduce the size of the vendored source tree. Alternatively, you can get a wrap file by downloading it from [Meson WrapDB](https://wrapdb.mesonbuild.com/nlohmann_json), or simply use `meson wrap install nlohmann_json`. Please see the meson project for any issues regarding the packaging.
If you are using the [Meson Build System](https://mesonbuild.com), add this source tree as a [meson subproject](https://mesonbuild.com/Subprojects.html#using-a-subproject). You may also use the `include.zip` published in this project's [Releases](https://github.com/nlohmann/json/releases) to reduce the size of the vendored source tree. Alternatively, you can get a wrap file by downloading it from [Meson WrapDB](https://wrapdb.mesonbuild.com/nlohmann_json), or simply use `meson wrap install nlohmann_json`. Please see the meson project for any issues regarding the packaging.
The provided meson.build can also be used as an alternative to cmake for installing `nlohmann_json` system-wide in which case a pkg-config file is installed. To use it, simply have your build system require the `nlohmann_json` pkg-config dependency. In Meson, it is preferred to use the [`dependency()`](https://mesonbuild.com/Reference-manual.html#dependency) object with a subproject fallback, rather than using the subproject directly.
@ -215,7 +215,7 @@ If you are using [Buckaroo](https://buckaroo.pm), you can install this library's
If you are using [vcpkg](https://github.com/Microsoft/vcpkg/) on your project for external dependencies, then you can use the [nlohmann-json package](https://github.com/Microsoft/vcpkg/tree/master/ports/nlohmann-json). Please see the vcpkg project for any issues regarding the packaging.
If you are using [cget](http://cget.readthedocs.io/en/latest/), you can install the latest development version with `cget install nlohmann/json`. A specific version can be installed with `cget install nlohmann/json@v3.1.0`. Also, the multiple header version can be installed by adding the `-DJSON_MultipleHeaders=ON` flag (i.e., `cget install nlohmann/json -DJSON_MultipleHeaders=ON`).
If you are using [cget](https://cget.readthedocs.io/en/latest/), you can install the latest development version with `cget install nlohmann/json`. A specific version can be installed with `cget install nlohmann/json@v3.1.0`. Also, the multiple header version can be installed by adding the `-DJSON_MultipleHeaders=ON` flag (i.e., `cget install nlohmann/json -DJSON_MultipleHeaders=ON`).
If you are using [CocoaPods](https://cocoapods.org), you can use the library by adding pod `"nlohmann_json", '~>3.1.2'` to your podfile (see [an example](https://bitbucket.org/benman/nlohmann_json-cocoapod/src/master/)). Please file issues [here](https://bitbucket.org/benman/nlohmann_json-cocoapod/issues?status=new&status=open).
@ -223,12 +223,12 @@ If you are using [NuGet](https://www.nuget.org), you can use the package [nlohma
If you are using [conda](https://conda.io/), you can use the package [nlohmann_json](https://github.com/conda-forge/nlohmann_json-feedstock) from [conda-forge](https://conda-forge.org) executing `conda install -c conda-forge nlohmann_json`. Please file issues [here](https://github.com/conda-forge/nlohmann_json-feedstock/issues).
If you are using [MSYS2](http://www.msys2.org/), your can use the [mingw-w64-nlohmann-json](https://packages.msys2.org/base/mingw-w64-nlohmann-json) package, just type `pacman -S mingw-w64-i686-nlohmann-json` or `pacman -S mingw-w64-x86_64-nlohmann-json` for installation. Please file issues [here](https://github.com/msys2/MINGW-packages/issues/new?title=%5Bnlohmann-json%5D) if you experience problems with the packages.
If you are using [MSYS2](https://www.msys2.org/), your can use the [mingw-w64-nlohmann-json](https://packages.msys2.org/base/mingw-w64-nlohmann-json) package, just type `pacman -S mingw-w64-i686-nlohmann-json` or `pacman -S mingw-w64-x86_64-nlohmann-json` for installation. Please file issues [here](https://github.com/msys2/MINGW-packages/issues/new?title=%5Bnlohmann-json%5D) if you experience problems with the packages.
If you are using [`build2`](https://build2.org), you can use the [`nlohmann-json`](https://cppget.org/nlohmann-json) package from the public repository http://cppget.org or directly from the [package's sources repository](https://github.com/build2-packaging/nlohmann-json). In your project's `manifest` file, just add `depends: nlohmann-json` (probably with some [version constraints](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml#guide-add-remove-deps)). If you are not familiar with using dependencies in `build2`, [please read this introduction](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml).
If you are using [`build2`](https://build2.org), you can use the [`nlohmann-json`](https://cppget.org/nlohmann-json) package from the public repository https://cppget.org or directly from the [package's sources repository](https://github.com/build2-packaging/nlohmann-json). In your project's `manifest` file, just add `depends: nlohmann-json` (probably with some [version constraints](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml#guide-add-remove-deps)). If you are not familiar with using dependencies in `build2`, [please read this introduction](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml).
Please file issues [here](https://github.com/build2-packaging/nlohmann-json) if you experience problems with the packages.
If you are using [`wsjcpp`](http://wsjcpp.org), you can use the command `wsjcpp install "https://github.com/nlohmann/json:develop"` to get the latest version. Note you can change the branch ":develop" to an existing tag or another branch.
If you are using [`wsjcpp`](https://wsjcpp.org), you can use the command `wsjcpp install "https://github.com/nlohmann/json:develop"` to get the latest version. Note you can change the branch ":develop" to an existing tag or another branch.
## Examples
@ -1016,7 +1016,7 @@ Other Important points:
### Binary formats (BSON, CBOR, MessagePack, and UBJSON)
Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over a network. Hence, the library supports [BSON](http://bsonspec.org) (Binary JSON), [CBOR](http://cbor.io) (Concise Binary Object Representation), [MessagePack](http://msgpack.org), and [UBJSON](http://ubjson.org) (Universal Binary JSON Specification) to efficiently encode JSON values to byte vectors and to decode such vectors.
Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over a network. Hence, the library supports [BSON](http://bsonspec.org) (Binary JSON), [CBOR](https://cbor.io) (Concise Binary Object Representation), [MessagePack](https://msgpack.org), and [UBJSON](http://ubjson.org) (Universal Binary JSON Specification) to efficiently encode JSON values to byte vectors and to decode such vectors.
```cpp
// create a JSON value
@ -1112,7 +1112,7 @@ Please note:
The code compiles successfully with [Android NDK](https://developer.android.com/ndk/index.html?hl=ml), Revision 9 - 11 (and possibly later) and [CrystaX's Android NDK](https://www.crystax.net/en/android/ndk) version 10.
- For GCC running on MinGW or Android SDK, the error `'to_string' is not a member of 'std'` (or similarly, for `strtod` or `strtof`) may occur. Note this is not an issue with the code, but rather with the compiler itself. On Android, see above to build with a newer environment. For MinGW, please refer to [this site](http://tehsausage.com/mingw-to-string) and [this discussion](https://github.com/nlohmann/json/issues/136) for information on how to fix this bug. For Android NDK using `APP_STL := gnustl_static`, please refer to [this discussion](https://github.com/nlohmann/json/issues/219).
- For GCC running on MinGW or Android SDK, the error `'to_string' is not a member of 'std'` (or similarly, for `strtod` or `strtof`) may occur. Note this is not an issue with the code, but rather with the compiler itself. On Android, see above to build with a newer environment. For MinGW, please refer to [this site](https://tehsausage.com/mingw-to-string) and [this discussion](https://github.com/nlohmann/json/issues/136) for information on how to fix this bug. For Android NDK using `APP_STL := gnustl_static`, please refer to [this discussion](https://github.com/nlohmann/json/issues/219).
- Unsupported versions of GCC and Clang are rejected by `#error` directives. This can be switched off by defining `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`. Note that you can expect no support in this case.
@ -1169,11 +1169,11 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
* * *
The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed under the [MIT License](http://opensource.org/licenses/MIT) (see above). Copyright &copy; 2008-2009 [Björn Hoehrmann](http://bjoern.hoehrmann.de/) <bjoern@hoehrmann.de>
The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed under the [MIT License](http://opensource.org/licenses/MIT) (see above). Copyright &copy; 2008-2009 [Björn Hoehrmann](https://bjoern.hoehrmann.de/) <bjoern@hoehrmann.de>
The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](http://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](http://florian.loitsch.com/)
The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](http://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](http://creativecommons.org/publicdomain/zero/1.0/).
The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
## Contact
@ -1230,7 +1230,7 @@ I deeply appreciate the help of the following people.
- [Mário Feroldi](https://github.com/thelostt) fixed a small typo.
- [duncanwerner](https://github.com/duncanwerner) found a really embarrassing performance regression in the 2.0.0 release.
- [Damien](https://github.com/dtoma) fixed one of the last conversion warnings.
- [Thomas Braun](https://github.com/t-b) fixed a warning in a test case.
- [Thomas Braun](https://github.com/t-b) fixed a warning in a test case and adjusted MSVC calls in the CI.
- [Théo DELRIEU](https://github.com/theodelrieu) patiently and constructively oversaw the long way toward [iterator-range parsing](https://github.com/nlohmann/json/issues/290). He also implemented the magic behind the serialization/deserialization of user-defined types and split the single header file into smaller chunks.
- [Stefan](https://github.com/5tefan) fixed a minor issue in the documentation.
- [Vasil Dimov](https://github.com/vasild) fixed the documentation regarding conversions from `std::multiset`.
@ -1374,6 +1374,36 @@ I deeply appreciate the help of the following people.
- [Florian Pigorsch](https://github.com/flopp) fixed a lot of typos.
- [Camille Bégué](https://github.com/cbegue) fixed an issue in the conversion from `std::pair` and `std::tuple` to `json`.
- [Anthony VH](https://github.com/AnthonyVH) fixed a compile error in an enum deserialization.
- [Yuriy Vountesmery](https://github.com/ua-code-dragon) noted a subtle bug in a preprocessor check.
- [Chen](https://github.com/dota17) fixed numerous issues in the library.
- [Antony Kellermann](https://github.com/aokellermann) added a CI step for GCC 10.1.
- [Alex](https://github.com/gistrec) fixed an MSVC warning.
- [Rainer](https://github.com/rvjr) proposed an improvement in the floating-point serialization in CBOR.
- [Francois Chabot](https://github.com/FrancoisChabot) made performance improvements in the input adapters.
- [Arthur Sonzogni](https://github.com/ArthurSonzogni) documented how the library can be included via `FetchContent`.
- [Rimas Misevičius](https://github.com/rmisev) fixed an error message.
- [Alexander Myasnikov](https://github.com/alexandermyasnikov) fixed some examples and a link in the README.
- [Hubert Chathi](https://github.com/uhoreg) made CMake's version config file architecture-independent.
- [OmnipotentEntity](https://github.com/OmnipotentEntity) implemented the binary values for CBOR, MessagePack, BSON, and UBJSON.
- [ArtemSarmini](https://github.com/ArtemSarmini) fixed a compilation issue with GCC 10 and fixed a leak.
- [Evgenii Sopov](https://github.com/sea-kg) integrated the library to the wsjcpp package manager.
- [Sergey Linev](https://github.com/linev) fixed a compiler warning.
- [Miguel Magalhães](https://github.com/magamig) fixed the year in the copyright.
- [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) fixed a compilation issue with MSVC.
- [Alexander “weej” Jones](https://github.com/alex-weej) fixed an example in the README.
- [Antoine Cœur](https://github.com/Coeur) fixed some typos in the documentation.
- [jothepro](https://github.com/jothepro) updated links to the Hunter package.
- [Dave Lee](https://github.com/kastiglione) fixed link in the README.
- [Joël Lamotte](https://github.com/Klaim) added instruction for using Build2's package manager.
- [Paul Jurczak](https://github.com/pauljurczak) fixed an example in the README.
- [Sonu Lohani](https://github.com/sonulohani) fixed a warning.
- [Carlos Gomes Martinho](https://github.com/gocarlos) updated the Conan package source.
- [Konstantin Podsvirov](https://github.com/podsvirov) fixed the MSYS2 package documentation.
- [Tridacnid](https://github.com/Tridacnid) improved the CMake tests.
- [Michael](https://github.com/MBalszun) fixed MSVC warnings.
- [Quentin Barbarat](https://github.com/quentin-dev) fixed an example in the documentation.
- [XyFreak](https://github.com/XyFreak) fixed a compiler warning.
- [TotalCaesar659](https://github.com/TotalCaesar659) fixed links in the README.
Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I forgot someone.
@ -1383,10 +1413,10 @@ Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I
The library itself consists of a single header file licensed under the MIT license. However, it is built, tested, documented, and whatnot using a lot of third-party tools and services. Thanks a lot!
- [**amalgamate.py - Amalgamate C source and header files**](https://github.com/edlund/amalgamate) to create a single header file
- [**American fuzzy lop**](http://lcamtuf.coredump.cx/afl/) for fuzz testing
- [**American fuzzy lop**](https://lcamtuf.coredump.cx/afl/) for fuzz testing
- [**AppVeyor**](https://www.appveyor.com) for [continuous integration](https://ci.appveyor.com/project/nlohmann/json) on Windows
- [**Artistic Style**](http://astyle.sourceforge.net) for automatic source code indentation
- [**CircleCI**](http://circleci.com) for [continuous integration](https://circleci.com/gh/nlohmann/json).
- [**CircleCI**](https://circleci.com) for [continuous integration](https://circleci.com/gh/nlohmann/json).
- [**Clang**](https://clang.llvm.org) for compilation with code sanitizers
- [**CMake**](https://cmake.org) for build automation
- [**Codacity**](https://www.codacy.com) for further [code analysis](https://www.codacy.com/app/nlohmann/json)
@ -1394,19 +1424,19 @@ The library itself consists of a single header file licensed under the MIT licen
- [**Coverity Scan**](https://scan.coverity.com) for [static analysis](https://scan.coverity.com/projects/nlohmann-json)
- [**cppcheck**](http://cppcheck.sourceforge.net) for static analysis
- [**doctest**](https://github.com/onqtam/doctest) for the unit tests
- [**Doxygen**](http://www.stack.nl/~dimitri/doxygen/) to generate [documentation](https://nlohmann.github.io/json/)
- [**Doxygen**](https://www.doxygen.nl/index.html) to generate [documentation](https://nlohmann.github.io/json/doxygen/index.html)
- [**git-update-ghpages**](https://github.com/rstacruz/git-update-ghpages) to upload the documentation to gh-pages
- [**GitHub Changelog Generator**](https://github.com/skywinder/github-changelog-generator) to generate the [ChangeLog](https://github.com/nlohmann/json/blob/develop/ChangeLog.md)
- [**Google Benchmark**](https://github.com/google/benchmark) to implement the benchmarks
- [**Hedley**](https://nemequ.github.io/hedley/) to avoid re-inventing several compiler-agnostic feature macros
- [**lcov**](http://ltp.sourceforge.net/coverage/lcov.php) to process coverage information and create a HTML view
- [**libFuzzer**](http://llvm.org/docs/LibFuzzer.html) to implement fuzz testing for OSS-Fuzz
- [**libFuzzer**](https://llvm.org/docs/LibFuzzer.html) to implement fuzz testing for OSS-Fuzz
- [**OSS-Fuzz**](https://github.com/google/oss-fuzz) for continuous fuzz testing of the library ([project repository](https://github.com/google/oss-fuzz/tree/master/projects/json))
- [**Probot**](https://probot.github.io) for automating maintainer tasks such as closing stale issues, requesting missing information, or detecting toxic comments.
- [**send_to_wandbox**](https://github.com/nlohmann/json/blob/develop/doc/scripts/send_to_wandbox.py) to send code examples to [Wandbox](http://melpon.org/wandbox)
- [**Travis**](https://travis-ci.org) for [continuous integration](https://travis-ci.org/nlohmann/json) on Linux and macOS
- [**Valgrind**](http://valgrind.org) to check for correct memory management
- [**Wandbox**](http://melpon.org/wandbox) for [online examples](https://wandbox.org/permlink/3lCHrFUZANONKv7a)
- [**Valgrind**](https://valgrind.org) to check for correct memory management
- [**Wandbox**](https://wandbox.org) for [online examples](https://wandbox.org/permlink/3lCHrFUZANONKv7a)
## Projects using JSON for Modern C++
@ -1423,7 +1453,7 @@ The library supports **Unicode input** as follows:
- Only **UTF-8** encoded input is supported which is the default encoding for JSON according to [RFC 8259](https://tools.ietf.org/html/rfc8259.html#section-8.1).
- `std::u16string` and `std::u32string` can be parsed, assuming UTF-16 and UTF-32 encoding, respectively. These encodings are not supported when reading from files or other input containers.
- Other encodings such as Latin-1 or ISO 8859-1 are **not** supported and will yield parse or serialization errors.
- [Unicode noncharacters](http://www.unicode.org/faq/private_use.html#nonchar1) will not be replaced by the library.
- [Unicode noncharacters](https://www.unicode.org/faq/private_use.html#nonchar1) will not be replaced by the library.
- Invalid surrogates (e.g., incomplete pairs such as `\uDEAD`) will yield parse errors.
- The strings stored in the library are UTF-8 encoded. When using the default string type (`std::string`), note that its length/size functions return the number of stored bytes rather than the number of characters or glyphs.
- When you store strings with different encodings in the library, calling [`dump()`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a50ec80b02d0f3f51130d4abb5d1cfdc5.html#a50ec80b02d0f3f51130d4abb5d1cfdc5) may throw an exception unless `json::error_handler_t::replace` or `json::error_handler_t::ignore` are used as error handlers.
@ -1474,7 +1504,7 @@ To compile and run the tests, you need to execute
```sh
$ mkdir build
$ cd build
$ cmake ..
$ cmake .. -DJSON_BuildTests=On
$ cmake --build .
$ ctest --output-on-failure
```

2
appveyor.yml
View file

@ -112,7 +112,7 @@ before_build:
# for with_win_header build, inject the inclusion of Windows.h to the single-header library
- ps: if ($env:name -Eq "with_win_header") { $header_path = "single_include\nlohmann\json.hpp" }
- ps: if ($env:name -Eq "with_win_header") { "#include <Windows.h>`n" + (Get-Content $header_path | Out-String) | Set-Content $header_path }
- if "%GENERATOR%"=="Ninja" (cmake . -G "%GENERATOR%" -DCMAKE_BUILD_TYPE="%configuration%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin") else (cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin")
- if "%GENERATOR%"=="Ninja" (cmake . -G "%GENERATOR%" -DCMAKE_BUILD_TYPE="%configuration%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On) else (cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On)
build_script:
- cmake --build . --config "%configuration%"

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5
include/nlohmann/detail/input/input_adapters.hpp
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@ -331,13 +331,14 @@ inline input_stream_adapter input_adapter(std::istream&& stream)
return input_stream_adapter(stream);
}
template<typename CharT,
template<typename CharT, typename SizeT,
typename std::enable_if<
std::is_pointer<CharT>::value and
std::is_integral<typename std::remove_pointer<CharT>::type>::value and
not std::is_same<SizeT, bool>::value and
sizeof(typename std::remove_pointer<CharT>::type) == 1,
int>::type = 0>
input_buffer_adapter input_adapter(CharT b, std::size_t l)
input_buffer_adapter input_adapter(CharT b, SizeT l)
{
return input_buffer_adapter(reinterpret_cast<const char*>(b), l);
}

2
include/nlohmann/detail/input/json_sax.hpp
View file

@ -452,7 +452,7 @@ class json_sax_dom_callback_parser
ref_stack.pop_back();
keep_stack.pop_back();
if (not ref_stack.empty() and ref_stack.back() and ref_stack.back()->is_object())
if (not ref_stack.empty() and ref_stack.back() and ref_stack.back()->is_structured())
{
// remove discarded value
for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)

2
include/nlohmann/detail/input/lexer.hpp
View file

@ -1367,7 +1367,7 @@ scan_number_done:
std::string result;
for (const auto c : token_string)
{
if ('\x00' <= c and c <= '\x1F')
if (static_cast<unsigned char>(c) <= '\x1F')
{
// escape control characters
std::array<char, 9> cs{{}};

2
include/nlohmann/json.hpp
View file

@ -3207,7 +3207,7 @@ class basic_json
not std::is_same<ValueType, typename string_t::value_type>::value and
not detail::is_basic_json<ValueType>::value
and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) and _MSC_VER <= 1914))
#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) and _MSC_VER >= 1910 and _MSC_VER <= 1914))
and not std::is_same<ValueType, typename std::string_view>::value
#endif
and detail::is_detected<detail::get_template_function, const basic_json_t&, ValueType>::value

11
single_include/nlohmann/json.hpp
View file

@ -4753,13 +4753,14 @@ inline input_stream_adapter input_adapter(std::istream&& stream)
return input_stream_adapter(stream);
}
template<typename CharT,
template<typename CharT, typename SizeT,
typename std::enable_if<
std::is_pointer<CharT>::value and
std::is_integral<typename std::remove_pointer<CharT>::type>::value and
not std::is_same<SizeT, bool>::value and
sizeof(typename std::remove_pointer<CharT>::type) == 1,
int>::type = 0>
input_buffer_adapter input_adapter(CharT b, std::size_t l)
input_buffer_adapter input_adapter(CharT b, SizeT l)
{
return input_buffer_adapter(reinterpret_cast<const char*>(b), l);
}
@ -5357,7 +5358,7 @@ class json_sax_dom_callback_parser
ref_stack.pop_back();
keep_stack.pop_back();
if (not ref_stack.empty() and ref_stack.back() and ref_stack.back()->is_object())
if (not ref_stack.empty() and ref_stack.back() and ref_stack.back()->is_structured())
{
// remove discarded value
for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
@ -9456,7 +9457,7 @@ scan_number_done:
std::string result;
for (const auto c : token_string)
{
if ('\x00' <= c and c <= '\x1F')
if (static_cast<unsigned char>(c) <= '\x1F')
{
// escape control characters
std::array<char, 9> cs{{}};
@ -18999,7 +19000,7 @@ class basic_json
not std::is_same<ValueType, typename string_t::value_type>::value and
not detail::is_basic_json<ValueType>::value
and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) and _MSC_VER <= 1914))
#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) and _MSC_VER >= 1910 and _MSC_VER <= 1914))
and not std::is_same<ValueType, typename std::string_view>::value
#endif
and detail::is_detected<detail::get_template_function, const basic_json_t&, ValueType>::value

1
test/CMakeLists.txt
View file

@ -183,6 +183,7 @@ add_dependencies(json_unit download_test_data)
#############################################################################
# Test the generated build configs
#############################################################################
add_subdirectory(cmake_import)
add_subdirectory(cmake_import_minver)
add_subdirectory(cmake_add_subdirectory)

47
test/src/unit-class_parser.cpp
View file

@ -1489,6 +1489,18 @@ TEST_CASE("parser class")
[1,2,[3,4,5],4,5]
)";
auto structured_array = R"(
[
1,
{
"foo": "bar"
},
{
"qux": "baz"
}
]
)";
SECTION("filter nothing")
{
json j_object = json::parse(s_object, [](int, json::parse_event_t, const json&)
@ -1557,6 +1569,41 @@ TEST_CASE("parser class")
CHECK (j_array == json({1, {3, 4, 5}, 4, 5}));
}
SECTION("filter object in array")
{
json j_filtered1 = json::parse(structured_array, [](int, json::parse_event_t e, const json & parsed)
{
if (e == json::parse_event_t::object_end and parsed.contains("foo"))
{
return false;
}
else
{
return true;
}
});
// the specified object will be discarded, and removed.
CHECK (j_filtered1.size() == 2);
CHECK (j_filtered1 == json({1, {{"qux", "baz"}}}));
json j_filtered2 = json::parse(structured_array, [](int, json::parse_event_t e, const json & parsed)
{
if (e == json::parse_event_t::object_end)
{
return false;
}
else
{
return true;
}
});
// removed all objects in array.
CHECK (j_filtered2.size() == 1);
CHECK (j_filtered2 == json({1}));
}
SECTION("filter specific events")
{
SECTION("first closing event")

22
test/src/unit-regression.cpp
View file

@ -1890,6 +1890,28 @@ TEST_CASE("regression tests")
json j = val;
}
SECTION("issue #1715 - json::from_cbor does not respect allow_exceptions = false when input is string literal")
{
SECTION("string literal")
{
json cbor = json::from_cbor("B", true, false);
CHECK(cbor.is_discarded());
}
SECTION("string array")
{
const char input[] = { 'B', 0x00 };
json cbor = json::from_cbor(input, true, false);
CHECK(cbor.is_discarded());
}
SECTION("std::string")
{
json cbor = json::from_cbor(std::string("B"), true, false);
CHECK(cbor.is_discarded());
}
}
SECTION("issue #1805 - A pair<T1, T2> is json constructible only if T1 and T2 are json constructible")
{
static_assert(!std::is_constructible<json, std::pair<std::string, NotSerializableData>>::value, "");