Regenerate the amalgamated headers

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

.gitattributes

@@ -0,0 +1,3 @@
+# generated files are collapsed in diffs and excluded from language statistics
+single_include/** linguist-generated
+nlohmann_json.natvis linguist-generated

.github/CODEOWNERS

@@ -1,5 +1,5 @@
 # JSON for Modern C++ was originally written by Niels Lohmann.
-# Since 2013, over 250 contributors have helped to improve the library.
+# Since 2013, over 400 contributors have helped to improve the library.
 # This CODEOWNERS file is only to make sure that @nlohmann is requested
 # for a code review in case of a pull request.
 

.github/CONTRIBUTING.md

@@ -98,7 +98,7 @@ $ ctest --test-dir build -j 10
 The test suite should report:
 
 ```
-100% tests passed, 0 tests failed out of 98
+100% tests passed, 0 tests failed out of <number of tests>
 ```
 
 #### Add tests
@@ -149,14 +149,17 @@ make build -C docs/mkdocs          # strict build: fails on broken links, anchor
 make check_mermaid -C docs/mkdocs  # checks the Mermaid diagrams (requires Node.js)
 ```
 
-A new API page also needs an entry in [`docs/docset/docSet.sql`](https://github.com/nlohmann/json/blob/develop/docs/docset/docSet.sql),
-the search index of the docset; `make build` reports missing entries.
+The search index of the docset is generated from [`mkdocs.yml`](https://github.com/nlohmann/json/blob/develop/docs/mkdocs/mkdocs.yml)
+and each page's title (H1) and declaration by
+[`docs/docset/generate_docset.py`](https://github.com/nlohmann/json/blob/develop/docs/docset/generate_docset.py);
+`make build` reports API pages that cannot be classified.
 
 ### Amalgamate the source code
 
 The single-header files
-[`single_include/nlohmann/json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp) and
-[`single_include/nlohmann/json_fwd.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json_fwd.hpp)
+[`single_include/nlohmann/json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp),
+[`single_include/nlohmann/json_fwd.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json_fwd.hpp), and
+[`single_include/nlohmann/json_literals.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json_literals.hpp)
 are **generated** from the source files in the
 [`include/nlohmann` directory](https://github.com/nlohmann/json/tree/develop/include/nlohmann). **Do not** edit the
 files directly; instead, modify the include/nlohmann sources and regenerate the files by executing:
@@ -179,7 +182,7 @@ The amalgamation check in CI fails if any of these generated files is out of dat
 
 ## Recommended documentation
 
-- The library’s [README file](https://github.com/nlohmann/json/blob/master/README.md) is an excellent starting point to
+- The library’s [README file](https://github.com/nlohmann/json/blob/develop/README.md) is an excellent starting point to
   understand its functionality.
 - The [documentation page](https://json.nlohmann.me) is the reference documentation of the library.
 - [RFC 8259](https://datatracker.ietf.org/doc/html/rfc8259) is the reference for the JavaScript Object Notation (JSON)
@@ -218,9 +221,9 @@ feature macros then allows users to test their code against the library in the n
 ### Break C++11 language conformance
 
 This library is designed to work with C++11 and later. This means that any
-[supported C++11 compiler](https://github.com/nlohmann/json/blob/master/README.md#supported-compilers) should compile
+[supported C++11 compiler](https://github.com/nlohmann/json/blob/develop/README.md#supported-compilers) should compile
 the library without problems. Some compilers like GCC 4.7 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual
-Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support.
+C++ 2013 and earlier are known not to work due to missing or incomplete C++11 support.
 
 Please do not add features that do not work with the mentioned supported compilers. Please guard features from C++14 and
 later against the respective [`JSON_HAS_CPP_14`](https://json.nlohmann.me/api/macros/json_has_cpp_11/) macros.
@@ -236,12 +239,11 @@ extension.
 The following areas really need contribution and are always welcomed:
 
 - Extending the **continuous integration** toward more exotic compilers such as Android NDK, Intel's Compiler, or the
-  bleeding-edge versions Clang.
-- Improving the efficiency of the **JSON parser**. The current parser is implemented as a naive recursive descent parser
-  with hand-coded string handling. More sophisticated approaches like LALR parsers would be really appreciated. That
-  said, parser generators like Bison or ANTLR do not play nice with single-header files -- I really would like to keep
-  the parser inside the `json.hpp` header, and I am not aware of approaches similar to [`re2c`](http://re2c.org) for
-  parsing.
+  bleeding-edge versions of Clang.
+- Improving the efficiency of the **JSON parser**. The current parser is a hand-written iterative parser that keeps an
+  explicit stack instead of recursing, with hand-coded string handling. Speeding up the lexer or the value construction
+  would be appreciated. Parser generators like Bison or ANTLR do not play nice with single-header files -- I really
+  would like to keep the parser inside the `json.hpp` header.
 - Extending and updating existing **benchmarks** to include (the most recent version of) this library. Though efficiency
   is not everything, speed and memory consumption are very important characteristics for C++ developers, so having
   proper comparisons would be interesting.

.github/ISSUE_TEMPLATE/bug.yaml

@@ -52,7 +52,7 @@ body:
         If possible, provide a small and self-contained example that triggers
         the bug. Please understand that we cannot analyze and debug large code
         bases. Please do not paste screenshots here.
-      render: Shell
+      render: cpp
   - type: textarea
     id: output
     attributes:
@@ -79,7 +79,7 @@ body:
       description: >
         Which version of the library did you use? If it is a released version,
         please enter the version number (e.g., 3.12.0). Otherwise, please enter
-        the commit hash. If you got the library from another source as the
+        the commit hash. If you got the library from another source than the
         GitHub repository (e.g., via a package manager), please also state
         this.
     validations:

.github/labeler.yml

@@ -21,6 +21,17 @@ labels:
   files:
     - "cmake/.*"
 
+# other build systems
+- label: "CMake"
+  files:
+    - "(meson\\.build|meson_options\\.txt|BUILD\\.bazel|MODULE\\.bazel|Package\\.swift)"
+
+- label: "documentation"
+  files:
+    - ".github/ISSUE_TEMPLATE/.*"
+    - ".github/config\\.yml"
+    - ".github/(CONTRIBUTING|SECURITY|CODE_OF_CONDUCT|PULL_REQUEST_TEMPLATE)\\.md"
+
 - label: "CI"
   files:
     - ".github/workflows/.*"

.github/workflows/check_amalgamation.yml

@@ -83,8 +83,7 @@ jobs:
           # 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, the same way generate_natvis.py's --version
-          # requirement briefly did.
+          # 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"
@@ -117,7 +116,6 @@ jobs:
 
           python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json.json -s .
           python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json_fwd.json -s .
-          cp include/nlohmann/json_literals.hpp $INCLUDE_DIR/json_literals.hpp
 
           # the header list of the Bazel "json" target must match the files in include/
           cmake -P cmake/scripts/gen_bazel_build_file.cmake
@@ -138,17 +136,13 @@ jobs:
           ${{ github.workspace }}/venv/bin/astyle --project=tools/astyle/.astylerc --suffix=none --quiet \
             $(find $SOURCE_DIRS -type f \( -name '*.hpp' -o -name '*.cpp' -o -name '*.cu' \) -not -path 'tests/thirdparty/*' -not -path 'tests/abi/include/nlohmann/*' | sort)
 
+          # json_literals.hpp is copied verbatim from the (now formatted) include/
+          # directory, like `make amalgamate` does
+          cp include/nlohmann/json_literals.hpp $INCLUDE_DIR/json_literals.hpp
+
       - name: Regenerate nlohmann_json.natvis
         run: |
           cd $MAIN_DIR
-          # Pass --version explicitly so this step also works with the tool
-          # copy from develop before this repository's own generate_natvis.py
-          # learns to derive the version itself: the older script requires
-          # --version, and the newer one accepts it as an explicit override.
-          ABI_MACROS=include/nlohmann/detail/abi_macros.hpp
-          VERSION_MAJOR=$(grep -m1 'define NLOHMANN_JSON_VERSION_MAJOR' $ABI_MACROS | grep -o '[0-9]\+')
-          VERSION_MINOR=$(grep -m1 'define NLOHMANN_JSON_VERSION_MINOR' $ABI_MACROS | grep -o '[0-9]\+')
-          VERSION_PATCH=$(grep -m1 'define NLOHMANN_JSON_VERSION_PATCH' $ABI_MACROS | grep -o '[0-9]\+')
           # 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
@@ -156,7 +150,7 @@ jobs:
           # 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 $NATVIS_TOOL_DIR/generate_natvis.py --version "$VERSION_MAJOR.$VERSION_MINOR.$VERSION_PATCH" $MAIN_DIR
+          python3 $NATVIS_TOOL_DIR/generate_natvis.py $MAIN_DIR
 
       - name: Build patch and check for differences
         id: diff
@@ -165,7 +159,7 @@ jobs:
           mkdir -p ${{ github.workspace }}/patch
           git diff --patch --no-color > ${{ github.workspace }}/patch/amalgamation.patch
           if [ -s ${{ github.workspace }}/patch/amalgamation.patch ]; then
-            echo "The source code has not been amalgamated/formatted correctly or BUILD.bazel is out of date. Diff:"
+            echo "The source code has not been amalgamated/formatted correctly, or BUILD.bazel, nlohmann_json.natvis, or the macro_builder tables in macro_scope.hpp are out of date ('make amalgamate BUILD.bazel natvis' fixes all but the tables, see tools/macro_builder/README.md). Diff:"
             cat ${{ github.workspace }}/patch/amalgamation.patch
             echo "has_diff=true" >> "$GITHUB_OUTPUT"
           else

.github/workflows/comment_check_amalgamation.yml

@@ -96,7 +96,7 @@ jobs:
               issue_number: issue_number,
               owner: context.repo.owner,
               repo: context.repo.repo,
-              body: '## 🔴 Amalgamation check failed! 🔴\nThe source code has not been amalgamated and/or formatted correctly, or `BUILD.bazel` is out of date.'
+              body: '## 🔴 Amalgamation check failed! 🔴\nThe source code has not been amalgamated and/or formatted correctly, or `BUILD.bazel`, `nlohmann_json.natvis`, or the macro_builder tables in `macro_scope.hpp` are out of date. `make amalgamate BUILD.bazel natvis` fixes all but the tables (see `tools/macro_builder/README.md`).'
                     + (hasPatch ? '\n\n📎 A ready-to-apply patch is attached to the [failed workflow run](' + runUrl + ') as the `amalgamation-patch` artifact.'
                                   + ' Download it, then apply it locally from the repository root with:'
                                   + '\n\n```shell\ngit apply amalgamation.patch\n```\n\n'

.github/workflows/publish_documentation.yml

@@ -15,6 +15,7 @@ on:
       - .github/SECURITY.md
       - cmake/clang_flags.cmake
       - cmake/gcc_flags.cmake
+      - include/nlohmann/detail/abi_macros.hpp
       - tests/fmt_formatter/project/main.cpp
       - tools/astyle/.astylerc
   workflow_dispatch:

.github/workflows/ubuntu.yml

@@ -109,7 +109,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        target: [ci_test_amalgamation, ci_test_single_header, ci_cppcheck, ci_cpplint, ci_reproducible_tests, ci_non_git_tests, ci_offline_testdata, ci_reuse_compliance, ci_test_valgrind]
+        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]
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@e14015d583714f6e62063499dc959a02595150a1 # v2.21.1
@@ -117,6 +117,7 @@ jobs:
           egress-policy: audit
 
       - name: Install Valgrind
+        if: matrix.target == 'ci_test_valgrind'
         run: sudo apt-get update ; sudo apt-get install -y valgrind
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
@@ -279,7 +280,7 @@ jobs:
           persist-credentials: false
       - name: Get latest CMake and ninja
         uses: lukka/get-cmake@fffaaafeea488556c2c12dad60690008bc1caacb # v4.4.2
-      - name: Set env FORCE_STDCPPFS_FLAG for clang 7 / 8 / 9 / 10
+      - name: Disable filesystem support (std::filesystem is unusable) for clang 7 / 8 / 9 / 10
         run: echo "JSON_FORCED_GLOBAL_COMPILE_OPTIONS=-DJSON_HAS_FILESYSTEM=0;-DJSON_HAS_EXPERIMENTAL_FILESYSTEM=0" >> "$GITHUB_ENV"
         if: ${{ matrix.compiler == '7' || matrix.compiler == '8' || matrix.compiler == '9' || matrix.compiler == '10' }}
       - name: Run CMake

.github/workflows/windows.yml

@@ -166,6 +166,13 @@ jobs:
       # link, but the binaries clang 11.0.1 and clang 18.1.8 then produce crash
       # before doctest prints its first line - 39 of 102 tests on clang 18.
       # Keep the objects small by splitting the test files instead.
+      # Objects with more than 65535 sections fail to link with "relocation
+      # truncated to fit: IMAGE_REL_AMD64_REL32 against `.rdata'": the MinGW
+      # linker stores the section an associative COMDAT section belongs to in
+      # 16 bits (x_associated in binutils' include/coff/internal.h), so it
+      # discards the jump tables of inline functions together with the wrong
+      # function. Each basic_json specialization a test file instantiates adds
+      # many sections, so test a second one in a file of its own.
       - name: Run CMake
         run: cmake -S . -B build ^
              -DCMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang++.exe" ^
@@ -180,7 +187,7 @@ jobs:
       - name: Test
         run: cd build ; ctest -j 10 -C Debug --output-on-failure
 
-  clang-cl-12:
+  clang-cl:
     runs-on: windows-2022
     strategy:
       matrix:
@@ -210,8 +217,10 @@ jobs:
         uses: lukka/get-cmake@fffaaafeea488556c2c12dad60690008bc1caacb # v4.4.2
         with:
           cmakeVersion: 4.3.4
+      # CMAKE_CXX_FLAGS replaces CMake's MSVC defaults (which include /EHsc), and
+      # ci_module_cpp20 forwards it to the module build, so list /EHsc explicitly
       - name: Run CMake (Debug)
-        run: cmake -S . -B build -G "Visual Studio 17 2022" -DJSON_CI=ON -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4 /WX"
+        run: cmake -S . -B build -G "Visual Studio 17 2022" -DJSON_CI=ON -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /EHsc /W4 /WX"
       - name: Build
         run: cmake --build build --config Debug --target ci_module_cpp20
         

.gitignore

@@ -27,7 +27,6 @@
 /docs/docset/JSON_for_Modern_C++.tgz
 /docs/docset/docSet.dsidx
 /docs/mkdocs/.cache/
-/docs/mkdocs/docs/__pycache__/
 /docs/mkdocs/hooks/__pycache__/
 /docs/mkdocs/scripts/mermaid/node_modules/
 /docs/mkdocs/site/
@@ -47,3 +46,17 @@ nlohmann_json.spdx
 
 # Bazel-related
 MODULE.bazel.lock
+
+# backups left by `make check-amalgamation` or the ci_test_amalgamation target if they are interrupted
+/BUILD.bazel~
+/nlohmann_json.natvis~
+/single_include/nlohmann/*.hpp~
+/venv_astyle/
+
+# release outputs of `make release`
+/include.zip
+/include.zip.asc
+/json.tar.xz
+/json.tar.xz.asc
+/release_files/
+/single_include/nlohmann/*.asc

BUILD.bazel

@@ -25,6 +25,7 @@ cc_library(
         "include/nlohmann/detail/conversions/from_json.hpp",
         "include/nlohmann/detail/conversions/to_chars.hpp",
         "include/nlohmann/detail/conversions/to_json.hpp",
+        "include/nlohmann/detail/conversions/zmij.hpp",
         "include/nlohmann/detail/exceptions.hpp",
         "include/nlohmann/detail/hash.hpp",
         "include/nlohmann/detail/input/binary_reader.hpp",
@@ -81,6 +82,7 @@ cc_library(
     hdrs = [
         "single_include/nlohmann/json.hpp",
         "single_include/nlohmann/json_fwd.hpp",
+        "single_include/nlohmann/json_literals.hpp",
     ],
     includes = ["single_include"],
     visibility = ["//visibility:public"],

CITATION.cff

@@ -8,7 +8,7 @@ authors:
     website: https://nlohmann.me
 title: "JSON for Modern C++"
 version: 3.12.0
-date-released: 2025-04-07
+date-released: 2025-04-11
 license: MIT
 repository-code: "https://github.com/nlohmann/json"
 url: https://json.nlohmann.me

CMakeLists.txt

@@ -30,7 +30,7 @@ endif ()
 option(NLOHMANN_JSON_BUILD_MODULES "Build C++ modules support" OFF)
 
 if(NLOHMANN_JSON_BUILD_MODULES)
-    if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.28)
+    if(NOT CMAKE_VERSION VERSION_LESS 3.28)
         message(STATUS "Building nlohmann.json C++ module")
         add_subdirectory(src/modules)
     else()

FILES.md

@@ -14,7 +14,7 @@ This file describes the source for supporting files; that is, files that are not
 The [GitHub Actions](https://docs.github.com/en/actions) workflows that build, test, and analyze the library. Each file in this folder defines one workflow:
 
 - `ubuntu.yml`, `macos.yml`, `windows.yml` — build and run the test suite on Linux, macOS, and Windows.
-- `check_amalgamation.yml` — verify that the single-header amalgamation in `single_include` is up to date on pull requests.
+- `check_amalgamation.yml` — verify on pull requests and pushes to `develop` that the generated files (the single-header amalgamation in `single_include`, `BUILD.bazel`, and `nlohmann_json.natvis`) are up to date.
 - `comment_check_amalgamation.yml` — comment on a pull request when the amalgamation check failed.
 - `cifuzz.yml` — run short fuzzing sessions via [OSS-Fuzz CIFuzz](https://google.github.io/oss-fuzz/getting-started/continuous-integration/) on pull requests.
 - `codeql-analysis.yml` — run [CodeQL](https://codeql.github.com) code scanning.
@@ -24,7 +24,9 @@ The [GitHub Actions](https://docs.github.com/en/actions) workflows that build, t
 - `dependency-review.yml` — scan dependency changes in pull requests for known vulnerabilities.
 - `labeler.yml` — the "Pull Request Labeler" workflow (see `.github/labeler.yml`).
 - `stale.yml` — comment on and close stale issues and pull requests.
-- `publish_documentation.yml` — build and publish the documentation on every merge to the `develop` branch.
+- `publish_documentation.yml` — build and publish the documentation on pushes to the `develop` branch that touch the documentation sources (or the files it embeds).
+- `check_docs_links.yml` — check the links of the documentation weekly, as external links can break without any change in this repository.
+- `cancel_closed_pr_runs.yml` — cancel unfinished workflow runs of a pull request once it is closed or merged.
 
 Further documentation:
 
@@ -266,8 +268,9 @@ meson setup builddir
 ninja -C builddir
 ```
 
-`meson_options.txt` defines the options, which mirror the CMake options that change the library's target (for example,
-`-DDiagnostics=true`). Meson requires this file next to `meson.build`, so it is also part of `include.zip`. `make check_build_options`
+`meson_options.txt` defines the options, which mirror the names of the CMake options that change the library's target (for example,
+`-DDiagnostics=true`); their defaults may differ (for example, `MultipleHeaders` defaults to `false` in Meson, while
+`JSON_MultipleHeaders` is `ON` in CMake). Meson requires this file next to `meson.build`, so it is also part of `include.zip`. `make check_build_options`
 ([`tools/check_build_options`](tools/check_build_options/README.md)) checks in CI that both files and the pkg-config files
 stay in sync with the CMake options.
 

MODULE.bazel

@@ -1,5 +1,6 @@
 module(
     name = "nlohmann_json",
+    version = "3.12.0",
     compatibility_level = 1,
 )
 

Makefile

@@ -1,4 +1,4 @@
-.PHONY: pretty clean ChangeLog.md release update_hedley update_hedley_undef BUILD.bazel natvis macro_builder_check check_build_options
+.PHONY: all amalgamate check-amalgamation check_build_options pretty install_astyle clean ChangeLog.md release update_hedley update_hedley_undef BUILD.bazel natvis macro_builder_check run_benchmarks pvs_studio serve_header reuse spdx
 
 ##########################################################################
 # configuration
@@ -41,12 +41,18 @@ all:
 	@echo "BUILD.bazel - regenerate the Bazel BUILD file from the include/nlohmann sources"
 	@echo "ChangeLog.md - generate ChangeLog file"
 	@echo "check-amalgamation - check whether sources have been amalgamated and BUILD.bazel is up to date"
+	@echo "check_build_options - check that the Meson build and the pkg-config files offer the options of the CMake target"
 	@echo "clean - remove built files"
-	@echo "fuzzing - see tests/fuzzing.md for how to build and run the fuzzers"
+	@echo "(fuzzers) - see tests/fuzzing.md, or run 'make -C tests fuzzers' to build the AFL fuzzers"
 	@echo "macro_builder_check - check that macro_scope.hpp matches tools/macro_builder's output"
 	@echo "natvis - regenerate nlohmann_json.natvis from the current ABI tags and version"
 	@echo "pretty - beautify code with Artistic Style"
+	@echo "pvs_studio - run the PVS-Studio static analyzer and open the report"
+	@echo "release - create the release files (include.zip, json.tar.xz, single headers, signatures, hashes)"
+	@echo "reuse - annotate the source files with REUSE license headers and lint them"
 	@echo "run_benchmarks - build and run benchmarks"
+	@echo "serve_header - serve the single header, re-amalgamated on demand (see tools/serve_header)"
+	@echo "spdx - generate the SPDX software bill of materials nlohmann_json.spdx"
 	@echo "update_hedley - download Hedley and regenerate hedley.hpp / hedley_undef.hpp"
 	@echo "update_hedley_undef - rebuild hedley_undef.hpp from the JSON_HEDLEY_* #define names in hedley.hpp"
 
@@ -108,13 +114,18 @@ $(AMALGAMATED_FWD_FILE): $(SRCS)
 $(AMALGAMATED_LITERALS_FILE): include/nlohmann/json_literals.hpp
 	cp include/nlohmann/json_literals.hpp $(AMALGAMATED_LITERALS_FILE)
 
+NATVIS_VENV=tools/generate_natvis/venv
+
 # regenerate nlohmann_json.natvis from the ABI tags and version in include/nlohmann/detail/abi_macros.hpp
+# (the dependencies are installed into a virtual environment first)
 natvis:
-	python3 tools/generate_natvis/generate_natvis.py .
+	@test -d $(NATVIS_VENV) || python3 -mvenv $(NATVIS_VENV)
+	@$(NATVIS_VENV)/bin/python3 -c 'import jinja2' 2>/dev/null || $(NATVIS_VENV)/bin/pip3 install --quiet -r tools/generate_natvis/requirements.txt
+	$(NATVIS_VENV)/bin/python3 tools/generate_natvis/generate_natvis.py .
 
 # regenerate the two tools/macro_builder blocks of $(MACRO_SCOPE_HPP) (see its README.md) and diff against the
 # checked-in header; phony, because it never writes $(MACRO_SCOPE_HPP) itself
-macro_builder_check:
+macro_builder_check: install_astyle
 	@set -e; \
 	TMPDIR=$$(mktemp -d ./macro_builder_check.XXXXXX); \
 	trap 'rm -rf "$$TMPDIR"' EXIT; \
@@ -131,27 +142,27 @@ macro_builder_check:
 check_build_options:
 	python3 tools/check_build_options/check_build_options.py .
 
-# check if file single_include/nlohmann/json.hpp has been amalgamated from the nlohmann sources
+# check if the single headers have been amalgamated from the nlohmann sources and if BUILD.bazel and
+# nlohmann_json.natvis are up to date; all checks are run, and the checked-in files are always restored
 check-amalgamation:
-	@mv $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~
-	@mv $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~
-	@mv $(AMALGAMATED_LITERALS_FILE) $(AMALGAMATED_LITERALS_FILE)~
-	@$(MAKE) amalgamate
-	@diff $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE) ; false)
-	@diff $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE) ; false)
-	@diff $(AMALGAMATED_LITERALS_FILE) $(AMALGAMATED_LITERALS_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_LITERALS_FILE)~ $(AMALGAMATED_LITERALS_FILE) ; false)
-	@mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE)
-	@mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE)
-	@mv $(AMALGAMATED_LITERALS_FILE)~ $(AMALGAMATED_LITERALS_FILE)
-	@mv BUILD.bazel BUILD.bazel~
-	@$(MAKE) BUILD.bazel
-	@diff BUILD.bazel BUILD.bazel~ || (echo "===================================================================\n  BUILD.bazel is out of date! Please run 'make BUILD.bazel'.\n===================================================================" ; mv BUILD.bazel~ BUILD.bazel ; false)
-	@mv BUILD.bazel~ BUILD.bazel
-	@mv nlohmann_json.natvis nlohmann_json.natvis~
-	@$(MAKE) natvis
-	@diff nlohmann_json.natvis nlohmann_json.natvis~ || (echo "===================================================================\n  nlohmann_json.natvis is out of date! Please run 'make natvis'.\n===================================================================" ; mv nlohmann_json.natvis~ nlohmann_json.natvis ; false)
-	@mv nlohmann_json.natvis~ nlohmann_json.natvis
-	@$(MAKE) macro_builder_check
+	@status=0; \
+	banner() { printf '===================================================================\n  %s\n===================================================================\n' "$$1"; }; \
+	for FILE in $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_LITERALS_FILE) BUILD.bazel nlohmann_json.natvis; do \
+	    mv "$$FILE" "$$FILE~" || exit 1; \
+	done; \
+	$(MAKE) amalgamate || status=1; \
+	$(MAKE) BUILD.bazel || status=1; \
+	$(MAKE) natvis || status=1; \
+	for FILE in $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_LITERALS_FILE); do \
+	    diff "$$FILE" "$$FILE~" || { banner "$$FILE is out of date! Amalgamation required! Please read the contribution guidelines in file .github/CONTRIBUTING.md."; status=1; }; \
+	done; \
+	diff BUILD.bazel BUILD.bazel~ || { banner "BUILD.bazel is out of date! Please run 'make BUILD.bazel'."; status=1; }; \
+	diff nlohmann_json.natvis nlohmann_json.natvis~ || { banner "nlohmann_json.natvis is out of date! Please run 'make natvis'."; status=1; }; \
+	for FILE in $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_LITERALS_FILE) BUILD.bazel nlohmann_json.natvis; do \
+	    mv "$$FILE~" "$$FILE"; \
+	done; \
+	$(MAKE) macro_builder_check || status=1; \
+	exit $$status
 
 # generate the Bazel BUILD file; phony, because a removed header would not trigger a rebuild
 BUILD.bazel:
@@ -212,8 +223,8 @@ release: include.zip json.tar.xz
 
 # clean up
 clean:
-	rm -fr fuzz fuzz-testing *.dSYM tests/*.dSYM
-	rm -fr cmake-build-benchmarks fuzz-testing cmake-build-pvs-studio release_files
+	rm -fr *.dSYM tests/*.dSYM tests/parse_*_fuzzer
+	rm -fr cmake-build-benchmarks cmake-build-pvs-studio release_files
 	$(MAKE) clean -Cdocs
 
 

README.md

@@ -48,6 +48,7 @@
   - [Pkg-config](#pkg-config)
 - [License](#license)
 - [Contact](#contact)
+- [Security](#security)
 - [Thanks](#thanks)
 - [Used third-party tools](#used-third-party-tools)
 - [Notes](#notes)
@@ -112,9 +113,9 @@ There is also a [**docset**](https://github.com/Kapeli/Dash-User-Contributions/t
 
 ## Quick reference
 
-- **Constructors** [basic_json](https://json.nlohmann.me/api/basic_json/basic_json), [array](https://json.nlohmann.me/api/basic_json/array), [binary](https://json.nlohmann.me/api/basic_json/binary), [object](https://json.nlohmann.me/api/basic_json/object)
+- **Constructors**: [basic_json](https://json.nlohmann.me/api/basic_json/basic_json), [array](https://json.nlohmann.me/api/basic_json/array), [binary](https://json.nlohmann.me/api/basic_json/binary), [object](https://json.nlohmann.me/api/basic_json/object)
 - **Object inspection**: [type](https://json.nlohmann.me/api/basic_json/type), [operator value_t](https://json.nlohmann.me/api/basic_json/operator_value_t), [type_name](https://json.nlohmann.me/api/basic_json/type_name), [is_primitive](https://json.nlohmann.me/api/basic_json/is_primitive), [is_structured](https://json.nlohmann.me/api/basic_json/is_structured), [is_null](https://json.nlohmann.me/api/basic_json/is_null), [is_boolean](https://json.nlohmann.me/api/basic_json/is_boolean), [is_number](https://json.nlohmann.me/api/basic_json/is_number), [is_number_integer](https://json.nlohmann.me/api/basic_json/is_number_integer), [is_number_unsigned](https://json.nlohmann.me/api/basic_json/is_number_unsigned), [is_number_float](https://json.nlohmann.me/api/basic_json/is_number_float), [is_object](https://json.nlohmann.me/api/basic_json/is_object), [is_array](https://json.nlohmann.me/api/basic_json/is_array), [is_string](https://json.nlohmann.me/api/basic_json/is_string), [is_binary](https://json.nlohmann.me/api/basic_json/is_binary), [is_discarded](https://json.nlohmann.me/api/basic_json/is_discarded)
-- **Value access**; [get](https://json.nlohmann.me/api/basic_json/get), [get_to](https://json.nlohmann.me/api/basic_json/get_to), [get_ptr](https://json.nlohmann.me/api/basic_json/get_ptr), [get_ref](https://json.nlohmann.me/api/basic_json/get_ref), [operator ValueType](https://json.nlohmann.me/api/basic_json/operator_ValueType), [get_binary](https://json.nlohmann.me/api/basic_json/get_binary)
+- **Value access**: [get](https://json.nlohmann.me/api/basic_json/get), [get_to](https://json.nlohmann.me/api/basic_json/get_to), [get_ptr](https://json.nlohmann.me/api/basic_json/get_ptr), [get_ref](https://json.nlohmann.me/api/basic_json/get_ref), [operator ValueType](https://json.nlohmann.me/api/basic_json/operator_ValueType), [get_binary](https://json.nlohmann.me/api/basic_json/get_binary)
 - **Element access**: [at](https://json.nlohmann.me/api/basic_json/at), [operator[]](https://json.nlohmann.me/api/basic_json/operator[]), [value](https://json.nlohmann.me/api/basic_json/value), [front](https://json.nlohmann.me/api/basic_json/front), [back](https://json.nlohmann.me/api/basic_json/back)
 - **Lookup**: [find](https://json.nlohmann.me/api/basic_json/find), [count](https://json.nlohmann.me/api/basic_json/count), [contains](https://json.nlohmann.me/api/basic_json/contains)
 - **Iterators**: [begin](https://json.nlohmann.me/api/basic_json/begin), [cbegin](https://json.nlohmann.me/api/basic_json/cbegin), [end](https://json.nlohmann.me/api/basic_json/end), [cend](https://json.nlohmann.me/api/basic_json/cend), [rbegin](https://json.nlohmann.me/api/basic_json/rbegin), [rend](https://json.nlohmann.me/api/basic_json/rend), [crbegin](https://json.nlohmann.me/api/basic_json/crbegin), [crend](https://json.nlohmann.me/api/basic_json/crend), [items](https://json.nlohmann.me/api/basic_json/items)
@@ -1184,7 +1185,7 @@ binary[1]; // 0xFE
 binary.set_subtype(0x10);
 
 // serialize to MessagePack
-auto cbor = json::to_msgpack(j); // 0xD5 (fixext2), 0x10, 0xCA, 0xFE
+auto msgpack = json::to_msgpack(j); // 0xD5 (fixext2), 0x10, 0xCA, 0xFE
 ```
 
 ## Customers
@@ -1220,17 +1221,7 @@ I would be happy to learn about other compilers/versions.
 Please note:
 
 - GCC 4.8 has a bug [57824](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57824): multiline raw strings cannot be the arguments to macros. Don't use multiline raw strings directly in macros with this compiler.
-- Android defaults to using very old compilers and C++ libraries. To fix this, add the following to your `Application.mk`. This will switch to the LLVM C++ library, the Clang compiler, and enable C++11 and other features disabled by default.
-
-    ```makefile
-    APP_STL := c++_shared
-    NDK_TOOLCHAIN_VERSION := clang3.6
-    APP_CPPFLAGS += -frtti -fexceptions
-    ```
-
-    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](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).
+- For GCC running on MinGW or Android, 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 or C++ standard library itself: use a recent toolchain (for Android, a current [NDK](https://developer.android.com/ndk) with the LLVM C++ library `APP_STL := c++_shared`, and for MinGW, a distribution with a complete C++11 standard library). See [this discussion](https://github.com/nlohmann/json/issues/136) for MinGW and [this discussion](https://github.com/nlohmann/json/issues/219) for the old Android NDK using `APP_STL := gnustl_static`.
 
 - 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.
 
@@ -1394,9 +1385,10 @@ 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](https://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](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
+- The class contains a port of the shortest double-to-decimal conversion of [Żmij](https://github.com/vitaut/zmij) by Victor Zverovich, including the conversion of the digits to text by Xiang JunBo and the SIMD instruction sequence of Dougall Johnson, which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2025 [Victor Zverovich](https://github.com/vitaut)
 - 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/).
 - 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 and its table of powers of five 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 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
 
 <img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">
 
@@ -1437,436 +1429,416 @@ I deeply appreciate the help of the following people.
 12. [kepkin](https://github.com/kepkin) patiently pushed forward the support for Microsoft Visual Studio.
 13. [gregmarr](https://github.com/gregmarr) simplified the implementation of reverse iterators and helped with numerous hints and improvements. In particular, he pushed forward the implementation of user-defined types.
 14. [Caio Luppi](https://github.com/caiovlp) fixed a bug in the Unicode handling.
-15. [dariomt](https://github.com/dariomt) fixed some typos in the examples.
+15. [dariomt](https://github.com/dariomt) fixed some typos in the examples and fixed a subtlety in MSVC type support and implemented the `get_ref()` function to get a reference to stored values.
 16. [Daniel Frey](https://github.com/d-frey) cleaned up some pointers and implemented exception-safe memory allocation.
 17. [Colin Hirsch](https://github.com/ColinH) took care of a small namespace issue.
 18. [Huu Nguyen](https://github.com/whoshuu) corrected a variable name in the documentation.
 19. [Silverweed](https://github.com/silverweed) overloaded `parse()` to accept an rvalue reference.
-20. [dariomt](https://github.com/dariomt) fixed a subtlety in MSVC type support and implemented the `get_ref()` function to get a reference to stored values.
-21. [ZahlGraf](https://github.com/ZahlGraf) added a workaround that allows compilation using Android NDK.
-22. [whackashoe](https://github.com/whackashoe) replaced a function that was marked as unsafe by Visual Studio.
-23. [406345](https://github.com/406345) fixed two small warnings.
-24. [Glen Fernandes](https://github.com/glenfe) noted a potential portability problem in the `has_mapped_type` function.
-25. [Corbin Hughes](https://github.com/nibroc) fixed some typos in the contribution guidelines.
-26. [twelsby](https://github.com/twelsby) fixed the array subscript operator, an issue that failed the MSVC build, and floating-point parsing/dumping. He further added support for unsigned integer numbers and implemented better roundtrip support for parsed numbers.
-27. [Volker Diels-Grabsch](https://github.com/vog) fixed a link in the README file.
-28. [msm-](https://github.com/msm-) added support for American Fuzzy Lop.
-29. [Annihil](https://github.com/Annihil) fixed an example in the README file.
-30. [Themercee](https://github.com/Themercee) noted a wrong URL in the README file.
-31. [Lv Zheng](https://github.com/lv-zheng) fixed a namespace issue with `int64_t` and `uint64_t`.
-32. [abc100m](https://github.com/abc100m) analyzed the issues with GCC 4.8 and proposed a [partial solution](https://github.com/nlohmann/json/pull/212).
-33. [zewt](https://github.com/zewt) added useful notes to the README file about Android.
-34. [Róbert Márki](https://github.com/robertmrk) added a fix to use move iterators and improved the integration via CMake.
-35. [Chris Kitching](https://github.com/ChrisKitching) cleaned up the CMake files.
-36. [Tom Needham](https://github.com/06needhamt) fixed a subtle bug with MSVC 2015 which was also proposed by [Michael K.](https://github.com/Epidal).
-37. [Mário Feroldi](https://github.com/thelostt) fixed a small typo.
-38. [duncanwerner](https://github.com/duncanwerner) found a really embarrassing performance regression in the 2.0.0 release.
-39. [Damien](https://github.com/dtoma) fixed one of the last conversion warnings.
-40. [Thomas Braun](https://github.com/t-b) fixed a warning in a test case and adjusted MSVC calls in the CI.
-41. [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.
-42. [Stefan](https://github.com/5tefan) fixed a minor issue in the documentation.
-43. [Vasil Dimov](https://github.com/vasild) fixed the documentation regarding conversions from `std::multiset`.
-44. [ChristophJud](https://github.com/ChristophJud) overworked the CMake files to ease project inclusion.
-45. [Vladimir Petrigo](https://github.com/vpetrigo) made a SFINAE hack more readable and added Visual Studio 17 to the build matrix.
-46. [Denis Andrejew](https://github.com/seeekr) fixed a grammar issue in the README file.
-47. [Pierre-Antoine Lacaze](https://github.com/palacaze) found a subtle bug in the `dump()` function.
-48. [TurpentineDistillery](https://github.com/TurpentineDistillery) pointed to [`std::locale::classic()`](https://en.cppreference.com/w/cpp/locale/locale/classic) to avoid too much locale joggling, found some nice performance improvements in the parser, improved the benchmarking code, and realized locale-independent number parsing and printing.
-49. [cgzones](https://github.com/cgzones) had an idea how to fix the Coverity scan.
-50. [Jared Grubb](https://github.com/jaredgrubb) silenced a nasty documentation warning.
-51. [Yixin Zhang](https://github.com/qwename) fixed an integer overflow check.
-52. [Bosswestfalen](https://github.com/Bosswestfalen) merged two iterator classes into a smaller one.
-53. [Daniel599](https://github.com/Daniel599) helped to get Travis to execute the tests with Clang's sanitizers.
-54. [Jonathan Lee](https://github.com/vjon) fixed an example in the README file.
-55. [gnzlbg](https://github.com/gnzlbg) supported the implementation of user-defined types.
-56. [Alexej Harm](https://github.com/qis) helped to get the user-defined types working with Visual Studio.
-57. [Jared Grubb](https://github.com/jaredgrubb) supported the implementation of user-defined types.
-58. [EnricoBilla](https://github.com/EnricoBilla) noted a typo in an example.
-59. [Martin Hořeňovský](https://github.com/horenmar) found a way for a 2x speedup for the compilation time of the test suite.
-60. [ukhegg](https://github.com/ukhegg) proposed an improvement for the examples section.
-61. [rswanson-ihi](https://github.com/rswanson-ihi) noted a typo in the README.
-62. [Mihai Stan](https://github.com/stanmihai4) fixed a bug in the comparison with `nullptr`s.
-63. [Tushar Maheshwari](https://github.com/tusharpm) added [cotire](https://github.com/sakra/cotire) support to speed up the compilation.
-64. [TedLyngmo](https://github.com/TedLyngmo) noted a typo in the README, removed unnecessary bit arithmetic, and fixed some `-Weffc++` warnings.
-65. [Krzysztof Woś](https://github.com/krzysztofwos) made exceptions more visible.
-66. [ftillier](https://github.com/ftillier) fixed a compiler warning.
-67. [tinloaf](https://github.com/tinloaf) made sure all pushed warnings are properly popped.
-68. [Fytch](https://github.com/Fytch) found a bug in the documentation.
-69. [Jay Sistar](https://github.com/Type1J) implemented a Meson build description.
-70. [Henry Lee](https://github.com/HenryRLee) fixed a warning in ICC and improved the iterator implementation.
-71. [Vincent Thiery](https://github.com/vthiery) maintains a package for the Conan package manager.
-72. [Steffen](https://github.com/koemeet) fixed a potential issue with MSVC and `std::min`.
-73. [Mike Tzou](https://github.com/Chocobo1) fixed some typos.
-74. [amrcode](https://github.com/amrcode) noted misleading documentation about comparison of floats.
-75. [Oleg Endo](https://github.com/olegendo) reduced the memory consumption by replacing `<iostream>` with `<iosfwd>`.
-76. [dan-42](https://github.com/dan-42) cleaned up the CMake files to simplify including/reusing of the library.
-77. [Nikita Ofitserov](https://github.com/himikof) allowed for moving values from initializer lists.
-78. [Greg Hurrell](https://github.com/wincent) fixed a typo.
-79. [Dmitry Kukovinets](https://github.com/DmitryKuk) fixed a typo.
-80. [kbthomp1](https://github.com/kbthomp1) fixed an issue related to the Intel OSX compiler.
-81. [Markus Werle](https://github.com/daixtrose) fixed a typo.
-82. [WebProdPP](https://github.com/WebProdPP) fixed a subtle error in a precondition check.
-83. [Alex](https://github.com/leha-bot) noted an error in a code sample.
-84. [Tom de Geus](https://github.com/tdegeus) reported some warnings with ICC and helped to fix them.
-85. [Perry Kundert](https://github.com/pjkundert) simplified reading from input streams.
-86. [Sonu Lohani](https://github.com/sonulohani) fixed a small compilation error.
-87. [Jamie Seward](https://github.com/jseward) fixed all MSVC warnings.
-88. [Nate Vargas](https://github.com/eld00d) added a Doxygen tag file.
-89. [pvleuven](https://github.com/pvleuven) helped to fix a warning in ICC.
-90. [Pavel](https://github.com/crea7or) helped to fix some warnings in MSVC.
-91. [Jamie Seward](https://github.com/jseward) avoided unnecessary string copies in `find()` and `count()`.
-92. [Mitja](https://github.com/Itja) fixed some typos.
-93. [Jorrit Wronski](https://github.com/jowr) updated the Hunter package links.
-94. [Matthias Möller](https://github.com/TinyTinni) added a `.natvis` for the MSVC debug view.
-95. [bogemic](https://github.com/bogemic) fixed some C++17 deprecation warnings.
-96. [Eren Okka](https://github.com/erengy) fixed some MSVC warnings.
-97. [abolz](https://github.com/abolz) integrated the Grisu2 algorithm for proper floating-point formatting, allowing more roundtrip checks to succeed.
-98. [Vadim Evard](https://github.com/Pipeliner) fixed a Markdown issue in the README.
-99. [zerodefect](https://github.com/zerodefect) fixed a compiler warning.
-100. [Kert](https://github.com/kaidokert) allowed to template the string type in the serialization and added the possibility to override the exceptional behavior.
-101. [mark-99](https://github.com/mark-99) helped fix an ICC error.
-102. [Patrik Huber](https://github.com/patrikhuber) fixed links in the README file.
-103. [johnfb](https://github.com/johnfb) found a bug in the implementation of CBOR's indefinite length strings.
-104. [Paul Fultz II](https://github.com/pfultz2) added a note on the cget package manager.
-105. [Wilson Lin](https://github.com/wla80) made the integration section of the README more concise.
-106. [RalfBielig](https://github.com/ralfbielig) detected and fixed a memory leak in the parser callback.
-107. [agrianius](https://github.com/agrianius) allowed dumping JSON to an alternative string type.
-108. [Kevin Tonon](https://github.com/ktonon) overworked the C++11 compiler checks in CMake.
-109. [Axel Huebl](https://github.com/ax3l) simplified a CMake check and added support for the [Spack package manager](https://spack.io).
-110. [Carlos O'Ryan](https://github.com/coryan) fixed a typo.
-111. [James Upjohn](https://github.com/jupjohn) fixed a version number in the compilers section.
-112. [Chuck Atkins](https://github.com/chuckatkins) adjusted the CMake files to the CMake packaging guidelines and provided documentation for the CMake integration.
-113. [Jan Schöppach](https://github.com/dns13) fixed a typo.
-114. [martin-mfg](https://github.com/martin-mfg) fixed a typo.
-115. [Matthias Möller](https://github.com/TinyTinni) removed the dependency from `std::stringstream`.
-116. [agrianius](https://github.com/agrianius) added code to use alternative string implementations.
-117. [Daniel599](https://github.com/Daniel599) allowed to use more algorithms with the `items()` function.
-118. [Julius Rakow](https://github.com/juliusrakow) fixed the Meson include directory and fixed the links to [cppreference.com](https://cppreference.com).
-119. [Sonu Lohani](https://github.com/sonulohani) fixed the compilation with MSVC 2015 in debug mode.
-120. [grembo](https://github.com/grembo) fixed the test suite and re-enabled several test cases.
-121. [Hyeon Kim](https://github.com/simnalamburt) introduced the macro `JSON_INTERNAL_CATCH` to control the exception handling inside the library.
-122. [thyu](https://github.com/thyu) fixed a compiler warning.
-123. [David Guthrie](https://github.com/LEgregius) fixed a subtle compilation error with Clang 3.4.2.
-124. [Dennis Fischer](https://github.com/dennisfischer) allowed to call `find_package` without installing the library.
-125. [Hyeon Kim](https://github.com/simnalamburt) fixed an issue with a double macro definition.
-126. [Ben Berman](https://github.com/rivertam) made some error messages more understandable.
-127. [zakalibit](https://github.com/zakalibit) fixed a compilation problem with the Intel C++ compiler.
-128. [mandreyel](https://github.com/mandreyel) fixed a compilation problem.
-129. [Kostiantyn Ponomarenko](https://github.com/koponomarenko) added version and license information to the Meson build file.
-130. [Henry Schreiner](https://github.com/henryiii) added support for GCC 4.8.
-131. [knilch](https://github.com/knilch0r) made sure the test suite does not stall when run in the wrong directory.
-132. [Antonio Borondo](https://github.com/antonioborondo) fixed an MSVC 2017 warning.
-133. [Dan Gendreau](https://github.com/dgendreau) implemented the `NLOHMANN_JSON_SERIALIZE_ENUM` macro to quickly define an enum/JSON mapping.
-134. [efp](https://github.com/efp) added line and column information to parse errors.
-135. [julian-becker](https://github.com/julian-becker) added BSON support.
-136. [Pratik Chowdhury](https://github.com/pratikpc) added support for structured bindings.
-137. [David Avedissian](https://github.com/davedissian) added support for Clang 5.0.1 (PS4 version).
-138. [Jonathan Dumaresq](https://github.com/dumarjo) implemented an input adapter to read from `FILE*`.
-139. [kjpus](https://github.com/kjpus) fixed a link in the documentation.
-140. [Manvendra Singh](https://github.com/manu-chroma) fixed a typo in the documentation.
-141. [ziggurat29](https://github.com/ziggurat29) fixed an MSVC warning.
-142. [Sylvain Corlay](https://github.com/SylvainCorlay) added code to avoid an issue with MSVC.
-143. [mefyl](https://github.com/mefyl) fixed a bug when JSON was parsed from an input stream.
-144. [Millian Poquet](https://github.com/mpoquet) allowed to install the library via Meson.
-145. [Michael Behrns-Miller](https://github.com/moodboom) found an issue with a missing namespace.
-146. [Nasztanovics Ferenc](https://github.com/naszta) fixed a compilation issue with libc 2.12.
-147. [Andreas Schwab](https://github.com/andreas-schwab) fixed the endian conversion.
-148. [Mark-Dunning](https://github.com/Mark-Dunning) fixed a warning in MSVC.
-149. [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) added `operator/` for JSON Pointers.
-150. [John-Mark](https://github.com/johnmarkwayve) noted a missing header.
-151. [Vitaly Zaitsev](https://github.com/xvitaly) fixed compilation with GCC 9.0.
-152. [Laurent Stacul](https://github.com/stac47) fixed compilation with GCC 9.0.
-153. [Ivor Wanders](https://github.com/iwanders) helped to reduce the CMake requirement to version 3.1.
-154. [njlr](https://github.com/njlr) updated the Buckaroo instructions.
-155. [Lion](https://github.com/lieff) fixed a compilation issue with GCC 7 on CentOS.
-156. [Isaac Nickaein](https://github.com/nickaein) improved the integer serialization performance and implemented the `contains()` function.
-157. [past-due](https://github.com/past-due) suppressed an unfixable warning.
-158. [Elvis Oric](https://github.com/elvisoric) improved Meson support.
-159. [Matěj Plch](https://github.com/Afforix) fixed an example in the README.
-160. [Mark Beckwith](https://github.com/wythe) fixed a typo.
-161. [scinart](https://github.com/scinart) fixed a bug in the serializer.
-162. [Patrick Boettcher](https://github.com/pboettch) implemented `push_back()` and `pop_back()` for JSON Pointers.
-163. [Bruno Oliveira](https://github.com/nicoddemus) added support for Conda.
-164. [Michele Caini](https://github.com/skypjack) fixed links in the README.
-165. [Hani](https://github.com/hnkb) documented how to install the library with NuGet.
-166. [Mark Beckwith](https://github.com/wythe) fixed a typo.
-167. [yann-morin-1998](https://github.com/yann-morin-1998) helped to reduce the CMake requirement to version 3.1.
-168. [Konstantin Podsvirov](https://github.com/podsvirov) maintains a package for the MSYS2 software distro.
-169. [remyabel](https://github.com/remyabel2) added GNUInstallDirs to the CMake files.
-170. [Taylor Howard](https://github.com/taylorhoward92) fixed a unit test.
-171. [Gabe Ron](https://github.com/Macr0Nerd) implemented the `to_string` method.
-172. [Watal M. Iwasaki](https://github.com/heavywatal) fixed a Clang warning.
-173. [Viktor Kirilov](https://github.com/onqtam) switched the unit tests from [Catch](https://github.com/philsquared/Catch) to [doctest](https://github.com/onqtam/doctest)
-174. [Juncheng E](https://github.com/ejcjason) fixed a typo.
-175. [tete17](https://github.com/tete17) fixed a bug in the `contains` function.
-176. [Xav83](https://github.com/Xav83) fixed some cppcheck warnings.
-177. [0xflotus](https://github.com/0xflotus) fixed some typos.
-178. [Christian Deneke](https://github.com/chris0x44) added a const version of `json_pointer::back`.
-179. [Julien Hamaide](https://github.com/crazyjul) made the `items()` function work with custom string types.
-180. [Evan Nemerson](https://github.com/nemequ) updated fixed a bug in Hedley and updated this library accordingly.
-181. [Florian Pigorsch](https://github.com/flopp) fixed a lot of typos.
-182. [Camille Bégué](https://github.com/cbegue) fixed an issue in the conversion from  `std::pair` and `std::tuple` to `json`.
-183. [Anthony VH](https://github.com/AnthonyVH) fixed a compile error in an enum deserialization.
-184. [Yuriy Vountesmery](https://github.com/ua-code-dragon) noted a subtle bug in a preprocessor check.
-185. [Chen](https://github.com/dota17) fixed numerous issues in the library.
-186. [Antony Kellermann](https://github.com/aokellermann) added a CI step for GCC 10.1.
-187. [Alex](https://github.com/gistrec) fixed an MSVC warning.
-188. [Rainer](https://github.com/rvjr) proposed an improvement in the floating-point serialization in CBOR.
-189. [Francois Chabot](https://github.com/FrancoisChabot) made performance improvements in the input adapters.
-190. [Arthur Sonzogni](https://github.com/ArthurSonzogni) documented how the library can be included via `FetchContent`.
-191. [Rimas Misevičius](https://github.com/rmisev) fixed an error message.
-192. [Alexander Myasnikov](https://github.com/alexandermyasnikov) fixed some examples and a link in the README.
-193. [Hubert Chathi](https://github.com/uhoreg) made CMake's version config file architecture-independent.
-194. [OmnipotentEntity](https://github.com/OmnipotentEntity) implemented the binary values for CBOR, MessagePack, BSON, and UBJSON.
-195. [ArtemSarmini](https://github.com/ArtemSarmini) fixed a compilation issue with GCC 10 and fixed a leak.
-196. [Evgenii Sopov](https://github.com/sea5kg) integrated the library to the wsjcpp package manager.
-197. [Sergey Linev](https://github.com/linev) fixed a compiler warning.
-198. [Miguel Magalhães](https://github.com/magamig) fixed the year in the copyright.
-199. [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) fixed a compilation issue with MSVC.
-200. [Alexander “weej” Jones](https://github.com/alex-weej) fixed an example in the README.
-201. [Antoine Cœur](https://github.com/Coeur) fixed some typos in the documentation.
-202. [jothepro](https://github.com/jothepro) updated links to the Hunter package.
-203. [Dave Lee](https://github.com/kastiglione) fixed a link in the README.
-204. [Joël Lamotte](https://github.com/Klaim) added instruction for using Build2's package manager.
-205. [Paul Jurczak](https://github.com/pauljurczak) fixed an example in the README.
-206. [Sonu Lohani](https://github.com/sonulohani) fixed a warning.
-207. [Carlos Gomes Martinho](https://github.com/gocarlos) updated the Conan package source.
-208. [Konstantin Podsvirov](https://github.com/podsvirov) fixed the MSYS2 package documentation.
-209. [Tridacnid](https://github.com/Tridacnid) improved the CMake tests.
-210. [Michael](https://github.com/MBalszun) fixed MSVC warnings.
-211. [Quentin Barbarat](https://github.com/quentin-dev) fixed an example in the documentation.
-212. [XyFreak](https://github.com/XyFreak) fixed a compiler warning.
-213. [TotalCaesar659](https://github.com/TotalCaesar659) fixed links in the README.
-214. [Tanuj Garg](https://github.com/tanuj208) improved the fuzzer coverage for UBSAN input.
-215. [AODQ](https://github.com/AODQ) fixed a compiler warning.
-216. [jwittbrodt](https://github.com/jwittbrodt) made `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` inline.
-217. [pfeatherstone](https://github.com/pfeatherstone) improved the upper bound of arguments of the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
-218. [Jan Procházka](https://github.com/jprochazk) fixed a bug in the CBOR parser for binary and string values.
-219. [T0b1-iOS](https://github.com/T0b1-iOS) fixed a bug in the new hash implementation.
-220. [Matthew Bauer](https://github.com/matthewbauer) adjusted the CBOR writer to create tags for binary subtypes.
-221. [gatopeich](https://github.com/gatopeich) implemented an ordered map container for `nlohmann::ordered_json`.
-222. [Érico Nogueira Rolim](https://github.com/ericonr) added support for pkg-config.
-223. [KonanM](https://github.com/KonanM) proposed an implementation for the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
-224. [Guillaume Racicot](https://github.com/gracicot) implemented `string_view` support and allowed C++20 support.
-225. [Alex Reinking](https://github.com/alexreinking) improved CMake support for `FetchContent`.
-226. [Hannes Domani](https://github.com/ssbssa) provided a GDB pretty printer.
-227. Lars Wirzenius reviewed the README file.
-228. [Jun Jie](https://github.com/ongjunjie) fixed a compiler path in the CMake scripts.
-229. [Ronak Buch](https://github.com/rbuch) fixed typos in the documentation.
-230. [Alexander Karzhenkov](https://github.com/karzhenkov) fixed a move constructor and the Travis builds.
-231. [Leonardo Lima](https://github.com/leozz37) added CPM.Cmake support.
-232. [Joseph Blackman](https://github.com/jbzdarkid) fixed a warning.
-233. [Yaroslav](https://github.com/YarikTH) updated doctest and implemented unit tests.
-234. [Martin Stump](https://github.com/globberwops) fixed a bug in the CMake files.
-235. [Jaakko Moisio](https://github.com/jasujm) fixed a bug in the input adapters.
-236. [bl-ue](https://github.com/bl-ue) fixed some Markdown issues in the README file.
-237. [William A. Wieselquist](https://github.com/wawiesel) fixed an example from the README.
-238. [abbaswasim](https://github.com/abbaswasim) fixed an example from the README.
-239. [Remy Jette](https://github.com/remyjette) fixed a warning.
-240. [Fraser](https://github.com/frasermarlow) fixed the documentation.
-241. [Ben Beasley](https://github.com/musicinmybrain) updated doctest.
-242. [Doron Behar](https://github.com/doronbehar) fixed pkg-config.pc.
-243. [raduteo](https://github.com/raduteo) fixed a warning.
-244. [David Pfahler](https://github.com/theShmoo) added the possibility to compile the library without I/O support.
-245. [Morten Fyhn Amundsen](https://github.com/mortenfyhn) fixed a typo.
-246. [jpl-mac](https://github.com/jpl-mac) allowed treating the library as a system header in CMake.
-247. [Jason Dsouza](https://github.com/jasmcaus) fixed the indentation of the CMake file.
-248. [offa](https://github.com/offa) added a link to Conan Center to the documentation.
-249. [TotalCaesar659](https://github.com/TotalCaesar659) updated the links in the documentation to use HTTPS.
-250. [Rafail Giavrimis](https://github.com/grafail) fixed the Google Benchmark default branch.
-251. [Louis Dionne](https://github.com/ldionne) fixed a conversion operator.
-252. [justanotheranonymoususer](https://github.com/justanotheranonymoususer) made the examples in the README more consistent.
-253. [Finkman](https://github.com/Finkman) suppressed some `-Wfloat-equal` warnings.
-254. [Ferry Huberts](https://github.com/fhuberts) fixed `-Wswitch-enum` warnings.
-255. [Arseniy Terekhin](https://github.com/senyai) made the GDB pretty-printer robust against unset variable names.
-256. [Amir Masoud Abdol](https://github.com/amirmasoudabdol) updated the Homebrew command as nlohmann/json is now in homebrew-core.
-257. [Hallot](https://github.com/Hallot) fixed some `-Wextra-semi-stmt warnings`.
-258. [Giovanni Cerretani](https://github.com/gcerretani) fixed `-Wunused` warnings on `JSON_DIAGNOSTICS`.
-259. [Bogdan Popescu](https://github.com/Kapeli) hosts the [docset](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B) for offline documentation viewers.
-260. [Carl Smedstad](https://github.com/carlsmedstad) fixed an assertion error when using `JSON_DIAGNOSTICS`.
-261. [miikka75](https://github.com/miikka75) provided an important fix to compile C++17 code with Clang 9.
-262. [Maarten Becker](https://github.com/kernie) fixed a warning for shadowed variables.
-263. [Cristi Vîjdea](https://github.com/axnsan12) fixed typos in the `operator[]` documentation.
-264. [Alex Beregszaszi](https://github.com/axic) fixed spelling mistakes in comments.
-265. [Dirk Stolle](https://github.com/striezel) fixed typos in documentation.
-266. [Daniel Albuschat](https://github.com/daniel-kun) corrected the parameter name in the `parse` documentation.
-267. [Prince Mendiratta](https://github.com/Prince-Mendiratta) fixed a link to the FAQ.
-268. [Florian Albrechtskirchinger](https://github.com/falbrechtskirchinger) implemented `std::string_view` support for object keys and made dozens of other improvements.
-269. [Qianqian Fang](https://github.com/fangq) implemented the Binary JData (BJData) format.
-270. [pketelsen](https://github.com/pketelsen) added macros `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` and `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`.
-271. [DarkZeros](https://github.com/DarkZeros) adjusted to code to not clash with Arduino defines.
-272. [flagarde](https://github.com/flagarde) fixed the output of `meta()` for MSVC.
-273. [Giovanni Cerretani](https://github.com/gcerretani) fixed a check for `std::filesystem`.
-274. [Dimitris Apostolou](https://github.com/rex4539) fixed a typo.
-275. [Ferry Huberts](https://github.com/fhuberts) fixed a typo.
-276. [Michael Nosthoff](https://github.com/heinemml) fixed a typo.
-277. [JungHoon Lee](https://github.com/jhnlee) fixed a typo.
-278. [Faruk D.](https://github.com/fdiblen) fixed the CITATION.CFF file.
-279. [Andrea Cocito](https://github.com/puffetto) added a clarification on macro usage to the documentation.
-280. [Krzysiek Karbowiak](https://github.com/kkarbowiak) refactored the tests to use `CHECK_THROWS_WITH_AS`.
-281. [Chaoqi Zhang](https://github.com/prncoprs) fixed a typo.
-282. [ivanovmp](https://github.com/ivanovmp) fixed a whitespace error.
-283. [KsaNL](https://github.com/KsaNL) fixed a build error when including `<windows.h>`.
-284. [Andrea Pappacoda](https://github.com/Tachi107) moved `.pc` and `.cmake` files to `share` directory.
-285. [Wolf Vollprecht](https://github.com/wolfv) added the `patch_inplace` function.
-286. [Jake Zimmerman](https://github.com/jez) highlighted common usage patterns in the README file.
-287. [NN](https://github.com/NN---) added the Visual Studio output directory to `.gitignore`.
-288. [Romain Reignier](https://github.com/romainreignier) improved the performance of the vector output adapter.
-289. [Mike](https://github.com/Mike-Leo-Smith) fixed the `std::iterator_traits`.
-290. [Richard Hozák](https://github.com/richardhozak) added macro `JSON_NO_ENUM` to disable default enum conversions.
-291. [vakokako](https://github.com/vakokako) fixed tests when compiling with C++20.
-292. [Alexander “weej” Jones](https://github.com/alexweej) fixed an example in the README.
-293. [Eli Schwartz](https://github.com/eli-schwartz) added more files to the `include.zip` archive.
-294. [Kevin Lu](https://github.com/kevinlul) fixed a compilation issue when typedefs with certain names were present.
-295. [Trevor Hickey](https://github.com/luxe) improved the description of an example.
-296. [Jef LeCompte](https://github.com/jef) updated the year in the README file.
-297. [Alexandre Hamez](https://github.com/ahamez) fixed a warning.
-298. [Maninderpal Badhan](https://github.com/mbadhan) fixed a typo.
-299. [kevin--](https://github.com/kevin--) added a note to an example in the README file.
-300. [I](https://github.com/wx257osn2) fixed a typo.
-301. [Gregorio Litenstein](https://github.com/Lord-Kamina) fixed the Clang detection.
-302. [Andreas Smas](https://github.com/andoma) added a Doozer badge.
-303. [WanCW](https://github.com/wancw) fixed the string conversion with Clang.
-304. [zhaohuaxishi](https://github.com/zhaohuaxishi) fixed a Doxygen error.
-305. [emvivre](https://github.com/emvivre) removed an invalid parameter from CMake.
-306. [Tobias Hermann](https://github.com/Dobiasd) fixed a link in the README file.
-307. [Michael](https://github.com/traits) fixed a warning.
-308. [Ryan Mulder](https://github.com/ryanjmulder) added `ensure_ascii` to the `dump` function.
-309. [Muri Nicanor](https://github.com/murinicanor) fixed the `sed` discovery in the Makefile.
-310. [David Avedissian](https://github.com/dgavedissian) implemented SFINAE-friendly `iterator_traits`.
-311. [AQNOUCH Mohammed](https://github.com/aqnouch) fixed a typo in the README.
-312. [Gareth Sylvester-Bradley](https://github.com/garethsb) added `operator/=` and `operator/` to construct JSON pointers.
-313. [Michael Macnair](https://github.com/mykter) added support for afl-fuzz testing.
-314. [Berkus Decker](https://github.com/berkus) fixed a typo in the README.
-315. [Illia Polishchuk](https://github.com/ilqvya) improved the CMake testing.
-316. [Ikko Ashimine](https://github.com/eltociear) fixed a typo.
-317. [Raphael Grimm](https://github.com/barcode) added the possibility to define a custom base class.
-318. [tocic](https://github.com/tocic) fixed typos in the documentation.
-319. [Vertexwahn](https://github.com/Vertexwahn) added Bazel build support.
-320. [Dirk Stolle](https://github.com/striezel) fixed typos in the documentation.
-321. [DavidKorczynski](https://github.com/DavidKorczynski) added a CIFuzz CI GitHub action.
-322. [Finkman](https://github.com/Finkman) fixed the debug pretty-printer.
-323. [Florian Segginger](https://github.com/floriansegginger) bumped the years in the README.
-324. [haadfida](https://github.com/haadfida) cleaned up the badges of used services.
-325. [Arsen Arsenović](https://github.com/ArsenArsen) fixed a build error.
-326. [theevilone45](https://github.com/theevilone45) fixed a typo in a CMake file.
-327. [Sergei Trofimovich](https://github.com/trofi) fixed the custom allocator support.
-328. [Joyce](https://github.com/joycebrum) fixed some security issues in the GitHub workflows.
-329. [Nicolas Jakob](https://github.com/njakob) add vcpkg version badge.
-330. [Tomerkm](https://github.com/Tomerkm) added tests.
-331. [No.](https://github.com/tusooa) fixed the use of `get<>` calls.
-332. [taro](https://github.com/tarolling) fixed a typo in the `CODEOWNERS` file.
-333. [Ikko Eltociear Ashimine](https://github.com/eltociear) fixed a typo.
-334. [Felix Yan](https://github.com/felixonmars) fixed a typo in the README.
-335. [HO-COOH](https://github.com/HO-COOH) fixed a parenthesis in the documentation.
-336. [Ivor Wanders](https://github.com/iwanders) fixed the examples to catch exception by `const&`.
-337. [miny1233](https://github.com/miny1233) fixed a parenthesis in the documentation.
-338. [tomalakgeretkal](https://github.com/tomalakgeretkal) fixed a compilation error.
-339. [alferov](https://github.com/ALF-ONE) fixed a compilation error.
-340. [Craig Scott](https://github.com/craigscott-crascit) fixed a deprecation warning in CMake.
-341. [Vyacheslav Zhdanovskiy](https://github.com/ZeronSix) added macros for serialization-only types.
-342. [Mathieu Westphal](https://github.com/mwestphal) fixed typos.
-343. [scribam](https://github.com/scribam) fixed the MinGW workflow.
-344. [Aleksei Sapitskii](https://github.com/aleksproger) added support for Apple's Swift Package Manager.
-345. [Benjamin Buch](https://github.com/bebuch) fixed the installation path in CMake.
-346. [Colby Haskell](https://github.com/colbychaskell) clarified the parse error message in case a file cannot be opened.
-347. [Juan Carlos Arevalo Baeza](https://github.com/TheJCAB) fixed the enum conversion.
-348. [alferov](https://github.com/ALF-ONE) fixed a version in the documentation.
-349. [ss](https://github.com/serge-s) fixed the amalgamation call.
-350. [AniketDhemare](https://github.com/AniketDhemare) fixed a version in the documentation.
-351. [Philip Müller](https://github.com/philip-paul-mueller) fixed an example.
-352. [Leila Shcheglova](https://github.com/LeilaShcheglova) fixed a warning in a test.
-353. [Alex Prabhat Bara](https://github.com/alexprabhat99) fixed a function name in the documentation.
-354. [laterlaugh](https://github.com/laterlaugh) fixed some typos.
-355. [Yuanhao Jia](https://github.com/MrJia1997) fixed the GDB pretty printer.
-356. [Fallen_Breath](https://github.com/Fallen-Breath) fixed an example for JSON Pointer.
-357. [Nikhil Idiculla](https://github.com/tsnl) fixed some typos.
-358. [Griffin Myers](https://github.com/gmyers18) updated the Natvis file.
-359. [thetimr](https://github.com/thetimr) fixed a typo in the documentation.
-360. [Balazs Erseki](https://github.com/zerocukor287) fixed a URL in the contribution guidelines.
-361. [Niccolò Iardella](https://github.com/rotolof) added `NLOHMANN_DEFINE_DERIVED_TYPE_*` macros.
-362. [Borislav Stanimirov](https://github.com/iboB) allowed overriding the CMake target name.
-363. [Captain Crutches](https://github.com/captaincrutches) made `iterator_proxy_value` a `std::forward_iterator`.
-364. [Fredrik Sandhei](https://github.com/fsandhei) added type conversion support for `std::optional`.
-365. [jh96](https://github.com/jordan-hoang) added exceptions when `nullptr` is passed to `parse`.
-366. [Stuart Gorman](https://github.com/StuartGorman) fixed number parsing when `EINTR` set in `errno`.
-367. [Dylan Baker](https://github.com/dcbaker) generated a pkg-config file that follows the pkg-config conventions.
-368. [Tianyi Chen](https://github.com/TianyiChen) optimized the binary `get_number` implementation.
-369. [peng-wang-cn](https://github.com/peng-wang-cn) added type conversion support for multidimensional arrays.
-370. [Einars Netlis-Galejs](https://github.com/EinarsNG) added `ONLY_SERIALIZE` for `NLOHMANN_DEFINE_DERIVED_TYPE_*` macros.
-371. [Marcel](https://github.com/mering) removed `alwayslink=True` Bazel flag.
-372. [Harinath Nampally](https://github.com/hnampally) added diagnostic positions to exceptions.
-373. [Nissim Armand Ben Danan](https://github.com/NissimBendanan) fixed `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` with an empty JSON instance.
-374. [Michael Valladolid](https://github.com/codenut) added support for BSON uint64 serialization/deserialization.
-375. [Nikhil](https://github.com/nikhilreddydev) updated the documentation.
-376. [Nebojša Cvetković](https://github.com/nebkat) added support for BJDATA optimized binary array type.
-377. [Sushrut Shringarputale](https://github.com/sushshring) added support for diagnostic positions. 
-378. [kimci86](https://github.com/kimci86) templated to `NLOHMANN_DEFINE_TYPE` macros to also support `ordered_json`.
-379. [Richard Topchii](https://github.com/richardtop) added support for VisionOS in the Swift Package Manager.
-380. [Robert Chisholm](https://github.com/Robadob) fixed a typo.
-381. [zjyhjqs](https://github.com/zjyhjqs) added CPack support.
-382. [bitFiedler](https://github.com/bitFiedler) made GDB pretty printer work with Python 3.8.
-383. [Gianfranco Costamagna](https://github.com/LocutusOfBorg) fixed a compiler warning.
-384. [risa2000](https://github.com/risa2000) made `std::filesystem::path` conversion to/from UTF-8 encoded string explicit.
-385. [AM](https://github.com/maqnouch) fixed typos in the README.
-386. [dmenendez-gruposantander](https://github.com/dmenendez-gruposantander) fixed typos in the comments of the examples.
-387. [Mihai Stan](https://github.com/mstan-xx) fixed comparisons against the literal `0`.
-388. [Matt Gumbel](https://github.com/intelmatt) fixed some `-Weffc++` warnings.
-389. [vimpunk](https://github.com/vimpunk) moved a lambda out of an unevaluated context to support older compilers.
-390. [Chris Harris](https://github.com/cjh1) fixed the compilation with GCC 4.8.
-391. [Palmer Dabbelt](https://github.com/palmer-dabbelt) generated and installed a pkg-config file.
-392. [Gus Pozuelo](https://github.com/ap-viavi) made `ordered_map` compatible with GCC 5.5, Clang 3.6, and Xcode 9.
-393. [AK](https://github.com/Lioncky) fixed an MSVC build error caused by the `min`/`max` macros from `windows.h`.
-394. [Sergiu Deitsch](https://github.com/sergiud) provided a fallback for missing `char8_t` support.
-395. [Xiaochuan Ye](https://github.com/XueSongTap) fixed `from_msgpack` for `std::byte` input by specializing `std::char_traits`.
-396. [Ville Vesilehto](https://github.com/thevilledev) fixed an overflow in the BJData size calculation and rejected overflowing negative integers in CBOR.
-397. [NmPassTHFan](https://github.com/nmpassthf) replaced the deprecated `std::is_trivial` for C++26.
-398. [Chris Ever](https://github.com/chirsz-ever) added the `ignore_trailing_commas` parser option.
-399. [Kuan-Fu Wu](https://github.com/kfwu1999) fixed the example code for `json_pointer` initialization.
-400. [David Kilzer](https://github.com/ddkilzer) added a missing header to the input adapters.
-401. [Miko](https://github.com/mikomikotaishi) added proper C++20 module support, simplified the module API, and fixed missing exports.
-402. [hitgirl](https://github.com/hitgil) fixed the CMake configuration when cross-compiling.
-403. [Devon Thomas](https://github.com/ThomaDevOSU) mentioned the Artistic Style formatting in the contribution guidelines.
-404. [Erik Hu](https://github.com/Erikhu1) made Coveralls upload errors non-fatal in the CI.
-405. [co63oc](https://github.com/co63oc) fixed typos.
-406. [DmitriBogdanov](https://github.com/DmitriBogdanov) fixed broken package manager links in the documentation.
-407. [Bander](https://github.com/banderzhm) improved the MSVC compatibility of the C++ modules.
-408. [Andy Choi](https://github.com/ccpong) removed an unnecessary `template` keyword before `get` in the README and the documentation.
-409. [SamareshSingh](https://github.com/ssam18) fixed single-element brace initialization to copy/move instead of wrapping in an array, fixed the `WITH_DEFAULT` macros for `ordered_map`, and handled moved events in `serve_header.py`.
-410. [Aditya](https://github.com/Lumowhisp) improved the documentation of the documentation generation.
-411. [cheese1](https://github.com/cheese1) clarified the README.
-412. [KhloodElhossiny](https://github.com/khloodelhossiny) enabled `std::string_view` keys in `operator[]`.
-413. [Charles Cabergs](https://github.com/cacharle) fixed a `-Wtautological-constant-out-of-range-compare` warning.
-414. [EALePain](https://github.com/EALePain) made the `std::tuple` conversion work with reference types such as `std::tie`.
-415. [koala_oishi](https://github.com/chibi-dogs) fixed grammatical wording in the README.
-416. [riccardoori11](https://github.com/riccardoori11) fixed a typo in the documentation.
-417. [Swastik Bose](https://github.com/VasuBhakt) fixed the parent pointers after `update()` with `JSON_DIAGNOSTICS` and fixed the Doxygen autolinking of requirements.
-418. [trdesilva](https://github.com/trdesilva) added `front`, `pop_front`, and `push_front` to `json_pointer`.
-419. [Akhilesh Arora](https://github.com/akhilesharora) fixed an incomplete-type error with `ordered_json`.
-420. [Hariom Phulre](https://github.com/hariomphulre) fixed the C++20 modules compilation with GCC.
-421. [Kirill Lokotkov](https://github.com/RUSLoker) fixed printing `long double` values.
-422. [George Sedov](https://github.com/radistmorse) added the `NLOHMANN_DEFINE_TYPE_*_WITH_NAMES` macros.
-423. [Caillin Nugent](https://github.com/nugentcaillin) added the `NLOHMANN_JSON_SERIALIZE_ENUM_STRICT` macro.
-424. [Cosmin D.](https://github.com/drcosmin) fixed `std::filesystem::path` conversions and added an MSVC workaround for `std::unique_ptr`.
-425. [Paul Dreik](https://github.com/pauldreik) fixed a test relying on implementation-specific behavior.
-426. [Daniel Falk](https://github.com/daniel-falk) added missing copyright notices to the SBOM.
-427. [Federico Sfriso](https://github.com/federicosfriso05-dotcom) added support for constructing JSON values from C++20 range views.
-428. [Luke Banicevic](https://github.com/banaboi) fixed corrupt BSON output for lengths exceeding `INT32_MAX`, cleaned up the BSON writer, and improved the documentation.
-429. [Patrick Armstrong](https://github.com/Patrick10199) updated the CBOR references and the half-precision float assertions.
-430. [Yash Bavadiya](https://github.com/xevrion) added checks to all BSON reads.
-431. [hum4nBeing](https://github.com/hum4nBeing) fixed the overflow handling of high-precision numbers in UBJSON.
-432. [tomatotomata](https://github.com/tomatotomata) added checks for reading CBOR tagged subtypes.
-433. [YingqiDuan](https://github.com/YingqiDuan) documented the BSON interoperability.
-434. [KBS](https://github.com/youdie006) documented the standards compliance and the strictness of `parse()` and `operator>>`.
-435. [Petr Bělohlávek](https://github.com/petrbel) added Clang 21 and 22 to the CI.
-436. [Dmitry Rantovov](https://github.com/darkdi) fixed the placement of a CBOR documentation block.
-437. [ljcjclljc](https://github.com/ljcjclljc) fixed the comparison of large unsigned integers with signed integers.
-438. [Sahil Kamate](https://github.com/sahilkamate03) fixed the handling of CBOR tags 0-5 and 21-23.
-439. [Krishnanand G](https://github.com/Krishnanand-G) made the UBJSON writer reject `use_type` without `use_size`.
-440. [whn](https://github.com/Whning0513) documented the lenient BSON input handling and corrected the complexity of `to_bson`.
-441. [elix3r](https://github.com/22elix3r) fixed `update()` with `merge_objects` when merging a primitive into an object.
-442. [Avionic Harshit](https://github.com/avionicharshit-byte) made `diff()` linear when an array shrinks.
-443. [Qatadaha Bin Matloob](https://github.com/qatcod) fixed comparisons between integers and floats and fixed unparsable BJData output.
-444. [Wu Shuwen](https://github.com/dajiaohuang) removed an unused include.
+20. [ZahlGraf](https://github.com/ZahlGraf) added a workaround that allows compilation using Android NDK.
+21. [whackashoe](https://github.com/whackashoe) replaced a function that was marked as unsafe by Visual Studio.
+22. [406345](https://github.com/406345) fixed two small warnings.
+23. [Glen Fernandes](https://github.com/glenfe) noted a potential portability problem in the `has_mapped_type` function.
+24. [Corbin Hughes](https://github.com/nibroc) fixed some typos in the contribution guidelines.
+25. [twelsby](https://github.com/twelsby) fixed the array subscript operator, an issue that failed the MSVC build, and floating-point parsing/dumping. He further added support for unsigned integer numbers and implemented better roundtrip support for parsed numbers.
+26. [Volker Diels-Grabsch](https://github.com/vog) fixed a link in the README file.
+27. [msm-](https://github.com/msm-) added support for American Fuzzy Lop.
+28. [Annihil](https://github.com/Annihil) fixed an example in the README file.
+29. [Themercee](https://github.com/Themercee) noted a wrong URL in the README file.
+30. [Lv Zheng](https://github.com/lv-zheng) fixed a namespace issue with `int64_t` and `uint64_t`.
+31. [abc100m](https://github.com/abc100m) analyzed the issues with GCC 4.8 and proposed a [partial solution](https://github.com/nlohmann/json/pull/212).
+32. [zewt](https://github.com/zewt) added useful notes to the README file about Android.
+33. [Róbert Márki](https://github.com/robertmrk) added a fix to use move iterators and improved the integration via CMake.
+34. [Chris Kitching](https://github.com/ChrisKitching) cleaned up the CMake files.
+35. [Tom Needham](https://github.com/06needhamt) fixed a subtle bug with MSVC 2015 which was also proposed by [Michael K.](https://github.com/Epidal).
+36. [Mário Feroldi](https://github.com/thelostt) fixed a small typo.
+37. [duncanwerner](https://github.com/duncanwerner) found a really embarrassing performance regression in the 2.0.0 release.
+38. [Damien](https://github.com/dtoma) fixed one of the last conversion warnings.
+39. [Thomas Braun](https://github.com/t-b) fixed a warning in a test case and adjusted MSVC calls in the CI.
+40. [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.
+41. [Stefan](https://github.com/5tefan) fixed a minor issue in the documentation.
+42. [Vasil Dimov](https://github.com/vasild) fixed the documentation regarding conversions from `std::multiset`.
+43. [ChristophJud](https://github.com/ChristophJud) overworked the CMake files to ease project inclusion.
+44. [Vladimir Petrigo](https://github.com/vpetrigo) made a SFINAE hack more readable and added Visual Studio 17 to the build matrix.
+45. [Denis Andrejew](https://github.com/seeekr) fixed a grammar issue in the README file.
+46. [Pierre-Antoine Lacaze](https://github.com/palacaze) found a subtle bug in the `dump()` function.
+47. [TurpentineDistillery](https://github.com/TurpentineDistillery) pointed to [`std::locale::classic()`](https://en.cppreference.com/w/cpp/locale/locale/classic) to avoid too much locale joggling, found some nice performance improvements in the parser, improved the benchmarking code, and realized locale-independent number parsing and printing.
+48. [cgzones](https://github.com/cgzones) had an idea how to fix the Coverity scan.
+49. [Jared Grubb](https://github.com/jaredgrubb) silenced a nasty documentation warning and supported the implementation of user-defined types.
+50. [Yixin Zhang](https://github.com/qwename) fixed an integer overflow check.
+51. [Bosswestfalen](https://github.com/Bosswestfalen) merged two iterator classes into a smaller one.
+52. [Daniel599](https://github.com/Daniel599) helped to get Travis to execute the tests with Clang's sanitizers and allowed to use more algorithms with the `items()` function.
+53. [Jonathan Lee](https://github.com/vjon) fixed an example in the README file.
+54. [gnzlbg](https://github.com/gnzlbg) supported the implementation of user-defined types.
+55. [Alexej Harm](https://github.com/qis) helped to get the user-defined types working with Visual Studio.
+56. [EnricoBilla](https://github.com/EnricoBilla) noted a typo in an example.
+57. [Martin Hořeňovský](https://github.com/horenmar) found a way for a 2x speedup for the compilation time of the test suite.
+58. [ukhegg](https://github.com/ukhegg) proposed an improvement for the examples section.
+59. [rswanson-ihi](https://github.com/rswanson-ihi) noted a typo in the README.
+60. [Mihai Stan](https://github.com/stanmihai4) fixed a bug in the comparison with `nullptr`s.
+61. [Tushar Maheshwari](https://github.com/tusharpm) added [cotire](https://github.com/sakra/cotire) support to speed up the compilation.
+62. [TedLyngmo](https://github.com/TedLyngmo) noted a typo in the README, removed unnecessary bit arithmetic, and fixed some `-Weffc++` warnings.
+63. [Krzysztof Woś](https://github.com/krzysztofwos) made exceptions more visible.
+64. [ftillier](https://github.com/ftillier) fixed a compiler warning.
+65. [tinloaf](https://github.com/tinloaf) made sure all pushed warnings are properly popped.
+66. [Fytch](https://github.com/Fytch) found a bug in the documentation.
+67. [Jay Sistar](https://github.com/Type1J) implemented a Meson build description.
+68. [Henry Lee](https://github.com/HenryRLee) fixed a warning in ICC and improved the iterator implementation.
+69. [Vincent Thiery](https://github.com/vthiery) maintains a package for the Conan package manager.
+70. [Steffen](https://github.com/koemeet) fixed a potential issue with MSVC and `std::min`.
+71. [Mike Tzou](https://github.com/Chocobo1) fixed some typos.
+72. [amrcode](https://github.com/amrcode) noted misleading documentation about comparison of floats.
+73. [Oleg Endo](https://github.com/olegendo) reduced the memory consumption by replacing `<iostream>` with `<iosfwd>`.
+74. [dan-42](https://github.com/dan-42) cleaned up the CMake files to simplify including/reusing of the library.
+75. [Nikita Ofitserov](https://github.com/himikof) allowed for moving values from initializer lists.
+76. [Greg Hurrell](https://github.com/wincent) fixed a typo.
+77. [Dmitry Kukovinets](https://github.com/DmitryKuk) fixed a typo.
+78. [kbthomp1](https://github.com/kbthomp1) fixed an issue related to the Intel OSX compiler.
+79. [Markus Werle](https://github.com/daixtrose) fixed a typo.
+80. [WebProdPP](https://github.com/WebProdPP) fixed a subtle error in a precondition check.
+81. [Alex](https://github.com/leha-bot) noted an error in a code sample.
+82. [Tom de Geus](https://github.com/tdegeus) reported some warnings with ICC and helped to fix them.
+83. [Perry Kundert](https://github.com/pjkundert) simplified reading from input streams.
+84. [Sonu Lohani](https://github.com/sonulohani) fixed a small compilation error, fixed the compilation with MSVC 2015 in debug mode and fixed a warning.
+85. [Jamie Seward](https://github.com/jseward) fixed all MSVC warnings and avoided unnecessary string copies in `find()` and `count()`.
+86. [Nate Vargas](https://github.com/eld00d) added a Doxygen tag file.
+87. [pvleuven](https://github.com/pvleuven) helped to fix a warning in ICC.
+88. [Pavel](https://github.com/crea7or) helped to fix some warnings in MSVC.
+89. [Mitja](https://github.com/Itja) fixed some typos.
+90. [Jorrit Wronski](https://github.com/jowr) updated the Hunter package links.
+91. [Matthias Möller](https://github.com/TinyTinni) added a `.natvis` for the MSVC debug view and removed the dependency from `std::stringstream`.
+92. [bogemic](https://github.com/bogemic) fixed some C++17 deprecation warnings.
+93. [Eren Okka](https://github.com/erengy) fixed some MSVC warnings.
+94. [abolz](https://github.com/abolz) integrated the Grisu2 algorithm for proper floating-point formatting, allowing more roundtrip checks to succeed.
+95. [Vadim Evard](https://github.com/Pipeliner) fixed a Markdown issue in the README.
+96. [zerodefect](https://github.com/zerodefect) fixed a compiler warning.
+97. [Kert](https://github.com/kaidokert) allowed to template the string type in the serialization and added the possibility to override the exceptional behavior.
+98. [mark-99](https://github.com/mark-99) helped fix an ICC error.
+99. [Patrik Huber](https://github.com/patrikhuber) fixed links in the README file.
+100. [johnfb](https://github.com/johnfb) found a bug in the implementation of CBOR's indefinite length strings.
+101. [Paul Fultz II](https://github.com/pfultz2) added a note on the cget package manager.
+102. [Wilson Lin](https://github.com/wla80) made the integration section of the README more concise.
+103. [RalfBielig](https://github.com/ralfbielig) detected and fixed a memory leak in the parser callback.
+104. [agrianius](https://github.com/agrianius) allowed dumping JSON to an alternative string type and added code to use alternative string implementations.
+105. [Kevin Tonon](https://github.com/ktonon) overworked the C++11 compiler checks in CMake.
+106. [Axel Huebl](https://github.com/ax3l) simplified a CMake check and added support for the [Spack package manager](https://spack.io).
+107. [Carlos O'Ryan](https://github.com/coryan) fixed a typo.
+108. [James Upjohn](https://github.com/jupjohn) fixed a version number in the compilers section.
+109. [Chuck Atkins](https://github.com/chuckatkins) adjusted the CMake files to the CMake packaging guidelines and provided documentation for the CMake integration.
+110. [Jan Schöppach](https://github.com/dns13) fixed a typo.
+111. [martin-mfg](https://github.com/martin-mfg) fixed a typo.
+112. [Julius Rakow](https://github.com/juliusrakow) fixed the Meson include directory and fixed the links to [cppreference.com](https://cppreference.com).
+113. [grembo](https://github.com/grembo) fixed the test suite and re-enabled several test cases.
+114. [Hyeon Kim](https://github.com/simnalamburt) introduced the macro `JSON_INTERNAL_CATCH` to control the exception handling inside the library and fixed an issue with a double macro definition.
+115. [thyu](https://github.com/thyu) fixed a compiler warning.
+116. [David Guthrie](https://github.com/LEgregius) fixed a subtle compilation error with Clang 3.4.2.
+117. [Dennis Fischer](https://github.com/dennisfischer) allowed to call `find_package` without installing the library.
+118. [Ben Berman](https://github.com/rivertam) made some error messages more understandable.
+119. [zakalibit](https://github.com/zakalibit) fixed a compilation problem with the Intel C++ compiler.
+120. [mandreyel](https://github.com/mandreyel) fixed a compilation problem.
+121. [Kostiantyn Ponomarenko](https://github.com/koponomarenko) added version and license information to the Meson build file.
+122. [Henry Schreiner](https://github.com/henryiii) added support for GCC 4.8.
+123. [knilch](https://github.com/knilch0r) made sure the test suite does not stall when run in the wrong directory.
+124. [Antonio Borondo](https://github.com/antonioborondo) fixed an MSVC 2017 warning.
+125. [Dan Gendreau](https://github.com/dgendreau) implemented the `NLOHMANN_JSON_SERIALIZE_ENUM` macro to quickly define an enum/JSON mapping.
+126. [efp](https://github.com/efp) added line and column information to parse errors.
+127. [julian-becker](https://github.com/julian-becker) added BSON support.
+128. [Pratik Chowdhury](https://github.com/pratikpc) added support for structured bindings.
+129. [David Avedissian](https://github.com/davedissian) added support for Clang 5.0.1 (PS4 version).
+130. [Jonathan Dumaresq](https://github.com/dumarjo) implemented an input adapter to read from `FILE*`.
+131. [kjpus](https://github.com/kjpus) fixed a link in the documentation.
+132. [Manvendra Singh](https://github.com/manu-chroma) fixed a typo in the documentation.
+133. [ziggurat29](https://github.com/ziggurat29) fixed an MSVC warning.
+134. [Sylvain Corlay](https://github.com/SylvainCorlay) added code to avoid an issue with MSVC.
+135. [mefyl](https://github.com/mefyl) fixed a bug when JSON was parsed from an input stream.
+136. [Millian Poquet](https://github.com/mpoquet) allowed to install the library via Meson.
+137. [Michael Behrns-Miller](https://github.com/moodboom) found an issue with a missing namespace.
+138. [Nasztanovics Ferenc](https://github.com/naszta) fixed a compilation issue with libc 2.12.
+139. [Andreas Schwab](https://github.com/andreas-schwab) fixed the endian conversion.
+140. [Mark-Dunning](https://github.com/Mark-Dunning) fixed a warning in MSVC.
+141. [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) added `operator/` for JSON Pointers and fixed a compilation issue with MSVC.
+142. [John-Mark](https://github.com/johnmarkwayve) noted a missing header.
+143. [Vitaly Zaitsev](https://github.com/xvitaly) fixed compilation with GCC 9.0.
+144. [Laurent Stacul](https://github.com/stac47) fixed compilation with GCC 9.0.
+145. [Ivor Wanders](https://github.com/iwanders) helped to reduce the CMake requirement to version 3.1 and fixed the examples to catch exception by `const&`.
+146. [njlr](https://github.com/njlr) updated the Buckaroo instructions.
+147. [Lion](https://github.com/lieff) fixed a compilation issue with GCC 7 on CentOS.
+148. [Isaac Nickaein](https://github.com/nickaein) improved the integer serialization performance and implemented the `contains()` function.
+149. [past-due](https://github.com/past-due) suppressed an unfixable warning.
+150. [Elvis Oric](https://github.com/elvisoric) improved Meson support.
+151. [Matěj Plch](https://github.com/Afforix) fixed an example in the README.
+152. [Mark Beckwith](https://github.com/wythe) fixed two typos.
+153. [scinart](https://github.com/scinart) fixed a bug in the serializer.
+154. [Patrick Boettcher](https://github.com/pboettch) implemented `push_back()` and `pop_back()` for JSON Pointers.
+155. [Bruno Oliveira](https://github.com/nicoddemus) added support for Conda.
+156. [Michele Caini](https://github.com/skypjack) fixed links in the README.
+157. [Hani](https://github.com/hnkb) documented how to install the library with NuGet.
+158. [yann-morin-1998](https://github.com/yann-morin-1998) helped to reduce the CMake requirement to version 3.1.
+159. [Konstantin Podsvirov](https://github.com/podsvirov) maintains a package for the MSYS2 software distro and fixed the MSYS2 package documentation.
+160. [remyabel](https://github.com/remyabel2) added GNUInstallDirs to the CMake files.
+161. [Taylor Howard](https://github.com/taylorhoward92) fixed a unit test.
+162. [Gabe Ron](https://github.com/Macr0Nerd) implemented the `to_string` method.
+163. [Watal M. Iwasaki](https://github.com/heavywatal) fixed a Clang warning.
+164. [Viktor Kirilov](https://github.com/onqtam) switched the unit tests from [Catch](https://github.com/philsquared/Catch) to [doctest](https://github.com/doctest/doctest)
+165. [Juncheng E](https://github.com/ejcjason) fixed a typo.
+166. [tete17](https://github.com/tete17) fixed a bug in the `contains` function.
+167. [Xav83](https://github.com/Xav83) fixed some cppcheck warnings.
+168. [0xflotus](https://github.com/0xflotus) fixed some typos.
+169. [Christian Deneke](https://github.com/chris0x44) added a const version of `json_pointer::back`.
+170. [Julien Hamaide](https://github.com/crazyjul) made the `items()` function work with custom string types.
+171. [Evan Nemerson](https://github.com/nemequ) updated fixed a bug in Hedley and updated this library accordingly.
+172. [Florian Pigorsch](https://github.com/flopp) fixed a lot of typos.
+173. [Camille Bégué](https://github.com/cbegue) fixed an issue in the conversion from  `std::pair` and `std::tuple` to `json`.
+174. [Anthony VH](https://github.com/AnthonyVH) fixed a compile error in an enum deserialization.
+175. [Yuriy Vountesmery](https://github.com/ua-code-dragon) noted a subtle bug in a preprocessor check.
+176. [Chen](https://github.com/dota17) fixed numerous issues in the library.
+177. [Antony Kellermann](https://github.com/aokellermann) added a CI step for GCC 10.1.
+178. [Alex](https://github.com/gistrec) fixed an MSVC warning.
+179. [Rainer](https://github.com/rvjr) proposed an improvement in the floating-point serialization in CBOR.
+180. [Francois Chabot](https://github.com/FrancoisChabot) made performance improvements in the input adapters.
+181. [Arthur Sonzogni](https://github.com/ArthurSonzogni) documented how the library can be included via `FetchContent`.
+182. [Rimas Misevičius](https://github.com/rmisev) fixed an error message.
+183. [Alexander Myasnikov](https://github.com/alexandermyasnikov) fixed some examples and a link in the README.
+184. [Hubert Chathi](https://github.com/uhoreg) made CMake's version config file architecture-independent.
+185. [OmnipotentEntity](https://github.com/OmnipotentEntity) implemented the binary values for CBOR, MessagePack, BSON, and UBJSON.
+186. [ArtemSarmini](https://github.com/ArtemSarmini) fixed a compilation issue with GCC 10 and fixed a leak.
+187. [Evgenii Sopov](https://github.com/sea5kg) integrated the library to the wsjcpp package manager.
+188. [Sergey Linev](https://github.com/linev) fixed a compiler warning.
+189. [Miguel Magalhães](https://github.com/magamig) fixed the year in the copyright.
+190. [Alexander “weej” Jones](https://github.com/alex-weej) fixed an example in the README.
+191. [Antoine Cœur](https://github.com/Coeur) fixed some typos in the documentation.
+192. [jothepro](https://github.com/jothepro) updated links to the Hunter package.
+193. [Dave Lee](https://github.com/kastiglione) fixed a link in the README.
+194. [Joël Lamotte](https://github.com/Klaim) added instruction for using Build2's package manager.
+195. [Paul Jurczak](https://github.com/pauljurczak) fixed an example in the README.
+196. [Carlos Gomes Martinho](https://github.com/gocarlos) updated the Conan package source.
+197. [Tridacnid](https://github.com/Tridacnid) improved the CMake tests.
+198. [Michael](https://github.com/MBalszun) fixed MSVC warnings.
+199. [Quentin Barbarat](https://github.com/quentin-dev) fixed an example in the documentation.
+200. [XyFreak](https://github.com/XyFreak) fixed a compiler warning.
+201. [TotalCaesar659](https://github.com/TotalCaesar659) fixed links in the README and updated the links in the documentation to use HTTPS.
+202. [Tanuj Garg](https://github.com/tanuj208) improved the fuzzer coverage for UBSAN input.
+203. [AODQ](https://github.com/AODQ) fixed a compiler warning.
+204. [jwittbrodt](https://github.com/jwittbrodt) made `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` inline.
+205. [pfeatherstone](https://github.com/pfeatherstone) improved the upper bound of arguments of the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
+206. [Jan Procházka](https://github.com/jprochazk) fixed a bug in the CBOR parser for binary and string values.
+207. [T0b1-iOS](https://github.com/T0b1-iOS) fixed a bug in the new hash implementation.
+208. [Matthew Bauer](https://github.com/matthewbauer) adjusted the CBOR writer to create tags for binary subtypes.
+209. [gatopeich](https://github.com/gatopeich) implemented an ordered map container for `nlohmann::ordered_json`.
+210. [Érico Nogueira Rolim](https://github.com/ericonr) added support for pkg-config.
+211. [KonanM](https://github.com/KonanM) proposed an implementation for the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
+212. [Guillaume Racicot](https://github.com/gracicot) implemented `string_view` support and allowed C++20 support.
+213. [Alex Reinking](https://github.com/alexreinking) improved CMake support for `FetchContent`.
+214. [Hannes Domani](https://github.com/ssbssa) provided a GDB pretty printer.
+215. Lars Wirzenius reviewed the README file.
+216. [Jun Jie](https://github.com/ongjunjie) fixed a compiler path in the CMake scripts.
+217. [Ronak Buch](https://github.com/rbuch) fixed typos in the documentation.
+218. [Alexander Karzhenkov](https://github.com/karzhenkov) fixed a move constructor and the Travis builds.
+219. [Leonardo Lima](https://github.com/leozz37) added CPM.Cmake support.
+220. [Joseph Blackman](https://github.com/jbzdarkid) fixed a warning.
+221. [Yaroslav](https://github.com/YarikTH) updated doctest and implemented unit tests.
+222. [Martin Stump](https://github.com/globberwops) fixed a bug in the CMake files.
+223. [Jaakko Moisio](https://github.com/jasujm) fixed a bug in the input adapters.
+224. [bl-ue](https://github.com/bl-ue) fixed some Markdown issues in the README file.
+225. [William A. Wieselquist](https://github.com/wawiesel) fixed an example from the README.
+226. [abbaswasim](https://github.com/abbaswasim) fixed an example from the README.
+227. [Remy Jette](https://github.com/remyjette) fixed a warning.
+228. [Fraser](https://github.com/frasermarlow) fixed the documentation.
+229. [Ben Beasley](https://github.com/musicinmybrain) updated doctest.
+230. [Doron Behar](https://github.com/doronbehar) fixed pkg-config.pc.
+231. [raduteo](https://github.com/raduteo) fixed a warning.
+232. [David Pfahler](https://github.com/theShmoo) added the possibility to compile the library without I/O support.
+233. [Morten Fyhn Amundsen](https://github.com/mortenfyhn) fixed a typo.
+234. [jpl-mac](https://github.com/jpl-mac) allowed treating the library as a system header in CMake.
+235. [Jason Dsouza](https://github.com/jasmcaus) fixed the indentation of the CMake file.
+236. [offa](https://github.com/offa) added a link to Conan Center to the documentation.
+237. [Rafail Giavrimis](https://github.com/grafail) fixed the Google Benchmark default branch.
+238. [Louis Dionne](https://github.com/ldionne) fixed a conversion operator.
+239. [justanotheranonymoususer](https://github.com/justanotheranonymoususer) made the examples in the README more consistent.
+240. [Finkman](https://github.com/Finkman) suppressed some `-Wfloat-equal` warnings and fixed the debug pretty-printer.
+241. [Ferry Huberts](https://github.com/fhuberts) fixed `-Wswitch-enum` warnings and fixed a typo.
+242. [Arseniy Terekhin](https://github.com/senyai) made the GDB pretty-printer robust against unset variable names.
+243. [Amir Masoud Abdol](https://github.com/amirmasoudabdol) updated the Homebrew command as nlohmann/json is now in homebrew-core.
+244. [Hallot](https://github.com/Hallot) fixed some `-Wextra-semi-stmt warnings`.
+245. [Giovanni Cerretani](https://github.com/gcerretani) fixed `-Wunused` warnings on `JSON_DIAGNOSTICS` and fixed a check for `std::filesystem`.
+246. [Bogdan Popescu](https://github.com/Kapeli) hosts the [docset](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B) for offline documentation viewers.
+247. [Carl Smedstad](https://github.com/carlsmedstad) fixed an assertion error when using `JSON_DIAGNOSTICS`.
+248. [miikka75](https://github.com/miikka75) provided an important fix to compile C++17 code with Clang 9.
+249. [Maarten Becker](https://github.com/kernie) fixed a warning for shadowed variables.
+250. [Cristi Vîjdea](https://github.com/axnsan12) fixed typos in the `operator[]` documentation.
+251. [Alex Beregszaszi](https://github.com/axic) fixed spelling mistakes in comments.
+252. [Dirk Stolle](https://github.com/striezel) fixed typos in the documentation.
+253. [Daniel Albuschat](https://github.com/daniel-kun) corrected the parameter name in the `parse` documentation.
+254. [Prince Mendiratta](https://github.com/Prince-Mendiratta) fixed a link to the FAQ.
+255. [Florian Albrechtskirchinger](https://github.com/falbrechtskirchinger) implemented `std::string_view` support for object keys and made dozens of other improvements.
+256. [Qianqian Fang](https://github.com/fangq) implemented the Binary JData (BJData) format.
+257. [pketelsen](https://github.com/pketelsen) added macros `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` and `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`.
+258. [DarkZeros](https://github.com/DarkZeros) adjusted to code to not clash with Arduino defines.
+259. [flagarde](https://github.com/flagarde) fixed the output of `meta()` for MSVC.
+260. [Dimitris Apostolou](https://github.com/rex4539) fixed a typo.
+261. [Michael Nosthoff](https://github.com/heinemml) fixed a typo.
+262. [JungHoon Lee](https://github.com/jhnlee) fixed a typo.
+263. [Faruk D.](https://github.com/fdiblen) fixed the CITATION.CFF file.
+264. [Andrea Cocito](https://github.com/puffetto) added a clarification on macro usage to the documentation.
+265. [Krzysiek Karbowiak](https://github.com/kkarbowiak) refactored the tests to use `CHECK_THROWS_WITH_AS`.
+266. [Chaoqi Zhang](https://github.com/prncoprs) fixed a typo.
+267. [ivanovmp](https://github.com/ivanovmp) fixed a whitespace error.
+268. [KsaNL](https://github.com/KsaNL) fixed a build error when including `<windows.h>`.
+269. [Andrea Pappacoda](https://github.com/Tachi107) moved `.pc` and `.cmake` files to `share` directory.
+270. [Wolf Vollprecht](https://github.com/wolfv) added the `patch_inplace` function.
+271. [Jake Zimmerman](https://github.com/jez) highlighted common usage patterns in the README file.
+272. [NN](https://github.com/NN---) added the Visual Studio output directory to `.gitignore`.
+273. [Romain Reignier](https://github.com/romainreignier) improved the performance of the vector output adapter.
+274. [Mike](https://github.com/Mike-Leo-Smith) fixed the `std::iterator_traits`.
+275. [Richard Hozák](https://github.com/richardhozak) added macro `JSON_NO_ENUM` to disable default enum conversions.
+276. [vakokako](https://github.com/vakokako) fixed tests when compiling with C++20.
+277. [Alexander “weej” Jones](https://github.com/alexweej) fixed an example in the README.
+278. [Eli Schwartz](https://github.com/eli-schwartz) added more files to the `include.zip` archive.
+279. [Kevin Lu](https://github.com/kevinlul) fixed a compilation issue when typedefs with certain names were present.
+280. [Trevor Hickey](https://github.com/luxe) improved the description of an example.
+281. [Jef LeCompte](https://github.com/jef) updated the year in the README file.
+282. [Alexandre Hamez](https://github.com/ahamez) fixed a warning.
+283. [Maninderpal Badhan](https://github.com/mbadhan) fixed a typo.
+284. [kevin--](https://github.com/kevin--) added a note to an example in the README file.
+285. [I](https://github.com/wx257osn2) fixed a typo.
+286. [Gregorio Litenstein](https://github.com/Lord-Kamina) fixed the Clang detection.
+287. [Andreas Smas](https://github.com/andoma) added a Doozer badge.
+288. [WanCW](https://github.com/wancw) fixed the string conversion with Clang.
+289. [zhaohuaxishi](https://github.com/zhaohuaxishi) fixed a Doxygen error.
+290. [emvivre](https://github.com/emvivre) removed an invalid parameter from CMake.
+291. [Tobias Hermann](https://github.com/Dobiasd) fixed a link in the README file.
+292. [Michael](https://github.com/traits) fixed a warning.
+293. [Ryan Mulder](https://github.com/ryanjmulder) added `ensure_ascii` to the `dump` function.
+294. [Muri Nicanor](https://github.com/murinicanor) fixed the `sed` discovery in the Makefile.
+295. [David Avedissian](https://github.com/dgavedissian) implemented SFINAE-friendly `iterator_traits`.
+296. [AQNOUCH Mohammed](https://github.com/aqnouch) fixed a typo in the README.
+297. [Gareth Sylvester-Bradley](https://github.com/garethsb) added `operator/=` and `operator/` to construct JSON pointers.
+298. [Michael Macnair](https://github.com/mykter) added support for afl-fuzz testing.
+299. [Berkus Decker](https://github.com/berkus) fixed a typo in the README.
+300. [Illia Polishchuk](https://github.com/ilqvya) improved the CMake testing.
+301. [Ikko Ashimine](https://github.com/eltociear) fixed two typos.
+302. [Raphael Grimm](https://github.com/barcode) added the possibility to define a custom base class.
+303. [tocic](https://github.com/tocic) fixed typos in the documentation.
+304. [Vertexwahn](https://github.com/Vertexwahn) added Bazel build support.
+305. [DavidKorczynski](https://github.com/DavidKorczynski) added a CIFuzz CI GitHub action.
+306. [Florian Segginger](https://github.com/floriansegginger) bumped the years in the README.
+307. [haadfida](https://github.com/haadfida) cleaned up the badges of used services.
+308. [Arsen Arsenović](https://github.com/ArsenArsen) fixed a build error.
+309. [theevilone45](https://github.com/theevilone45) fixed a typo in a CMake file.
+310. [Sergei Trofimovich](https://github.com/trofi) fixed the custom allocator support.
+311. [Joyce](https://github.com/joycebrum) fixed some security issues in the GitHub workflows.
+312. [Nicolas Jakob](https://github.com/njakob) add vcpkg version badge.
+313. [Tomerkm](https://github.com/Tomerkm) added tests.
+314. [No.](https://github.com/tusooa) fixed the use of `get<>` calls.
+315. [taro](https://github.com/tarolling) fixed a typo in the `CODEOWNERS` file.
+316. [Felix Yan](https://github.com/felixonmars) fixed a typo in the README.
+317. [HO-COOH](https://github.com/HO-COOH) fixed a parenthesis in the documentation.
+318. [miny1233](https://github.com/miny1233) fixed a parenthesis in the documentation.
+319. [tomalakgeretkal](https://github.com/tomalakgeretkal) fixed a compilation error.
+320. [alferov](https://github.com/ALF-ONE) fixed a compilation error and fixed a version in the documentation.
+321. [Craig Scott](https://github.com/craigscott-crascit) fixed a deprecation warning in CMake.
+322. [Vyacheslav Zhdanovskiy](https://github.com/ZeronSix) added macros for serialization-only types.
+323. [Mathieu Westphal](https://github.com/mwestphal) fixed typos.
+324. [scribam](https://github.com/scribam) fixed the MinGW workflow.
+325. [Aleksei Sapitskii](https://github.com/aleksproger) added support for Apple's Swift Package Manager.
+326. [Benjamin Buch](https://github.com/bebuch) fixed the installation path in CMake.
+327. [Colby Haskell](https://github.com/colbychaskell) clarified the parse error message in case a file cannot be opened.
+328. [Juan Carlos Arevalo Baeza](https://github.com/TheJCAB) fixed the enum conversion.
+329. [ss](https://github.com/serge-s) fixed the amalgamation call.
+330. [AniketDhemare](https://github.com/AniketDhemare) fixed a version in the documentation.
+331. [Philip Müller](https://github.com/philip-paul-mueller) fixed an example.
+332. [Leila Shcheglova](https://github.com/LeilaShcheglova) fixed a warning in a test.
+333. [Alex Prabhat Bara](https://github.com/alexprabhat99) fixed a function name in the documentation.
+334. [laterlaugh](https://github.com/laterlaugh) fixed some typos.
+335. [Yuanhao Jia](https://github.com/MrJia1997) fixed the GDB pretty printer.
+336. [Fallen_Breath](https://github.com/Fallen-Breath) fixed an example for JSON Pointer.
+337. [Nikhil Idiculla](https://github.com/tsnl) fixed some typos.
+338. [Griffin Myers](https://github.com/gmyers18) updated the Natvis file.
+339. [thetimr](https://github.com/thetimr) fixed a typo in the documentation.
+340. [Balazs Erseki](https://github.com/zerocukor287) fixed a URL in the contribution guidelines.
+341. [Niccolò Iardella](https://github.com/rotolof) added `NLOHMANN_DEFINE_DERIVED_TYPE_*` macros.
+342. [Borislav Stanimirov](https://github.com/iboB) allowed overriding the CMake target name.
+343. [Captain Crutches](https://github.com/captaincrutches) made `iterator_proxy_value` a `std::forward_iterator`.
+344. [Fredrik Sandhei](https://github.com/fsandhei) added type conversion support for `std::optional`.
+345. [jh96](https://github.com/jordan-hoang) added exceptions when `nullptr` is passed to `parse`.
+346. [Stuart Gorman](https://github.com/StuartGorman) fixed number parsing when `EINTR` set in `errno`.
+347. [Dylan Baker](https://github.com/dcbaker) generated a pkg-config file that follows the pkg-config conventions.
+348. [Tianyi Chen](https://github.com/TianyiChen) optimized the binary `get_number` implementation.
+349. [peng-wang-cn](https://github.com/peng-wang-cn) added type conversion support for multidimensional arrays.
+350. [Einars Netlis-Galejs](https://github.com/EinarsNG) added `ONLY_SERIALIZE` for `NLOHMANN_DEFINE_DERIVED_TYPE_*` macros.
+351. [Marcel](https://github.com/mering) removed `alwayslink=True` Bazel flag.
+352. [Harinath Nampally](https://github.com/hnampally) added diagnostic positions to exceptions.
+353. [Nissim Armand Ben Danan](https://github.com/NissimBendanan) fixed `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` with an empty JSON instance.
+354. [Michael Valladolid](https://github.com/codenut) added support for BSON uint64 serialization/deserialization.
+355. [Nikhil](https://github.com/nikhilreddydev) updated the documentation.
+356. [Nebojša Cvetković](https://github.com/nebkat) added support for BJDATA optimized binary array type.
+357. [Sushrut Shringarputale](https://github.com/sushshring) added support for diagnostic positions. 
+358. [kimci86](https://github.com/kimci86) templated to `NLOHMANN_DEFINE_TYPE` macros to also support `ordered_json`.
+359. [Richard Topchii](https://github.com/richardtop) added support for VisionOS in the Swift Package Manager.
+360. [Robert Chisholm](https://github.com/Robadob) fixed a typo.
+361. [zjyhjqs](https://github.com/zjyhjqs) added CPack support.
+362. [bitFiedler](https://github.com/bitFiedler) made GDB pretty printer work with Python 3.8.
+363. [Gianfranco Costamagna](https://github.com/LocutusOfBorg) fixed a compiler warning.
+364. [risa2000](https://github.com/risa2000) made `std::filesystem::path` conversion to/from UTF-8 encoded string explicit.
+365. [AM](https://github.com/maqnouch) fixed typos in the README.
+366. [dmenendez-gruposantander](https://github.com/dmenendez-gruposantander) fixed typos in the comments of the examples.
+367. [Mihai Stan](https://github.com/mstan-xx) fixed comparisons against the literal `0`.
+368. [Matt Gumbel](https://github.com/intelmatt) fixed some `-Weffc++` warnings.
+369. [vimpunk](https://github.com/vimpunk) moved a lambda out of an unevaluated context to support older compilers.
+370. [Chris Harris](https://github.com/cjh1) fixed the compilation with GCC 4.8.
+371. [Palmer Dabbelt](https://github.com/palmer-dabbelt) generated and installed a pkg-config file.
+372. [Gus Pozuelo](https://github.com/ap-viavi) made `ordered_map` compatible with GCC 5.5, Clang 3.6, and Xcode 9.
+373. [AK](https://github.com/Lioncky) fixed an MSVC build error caused by the `min`/`max` macros from `windows.h`.
+374. [Sergiu Deitsch](https://github.com/sergiud) provided a fallback for missing `char8_t` support.
+375. [Xiaochuan Ye](https://github.com/XueSongTap) fixed `from_msgpack` for `std::byte` input by specializing `std::char_traits`.
+376. [Ville Vesilehto](https://github.com/thevilledev) fixed an overflow in the BJData size calculation and rejected overflowing negative integers in CBOR.
+377. [NmPassTHFan](https://github.com/nmpassthf) replaced the deprecated `std::is_trivial` for C++26.
+378. [Chris Ever](https://github.com/chirsz-ever) added the `ignore_trailing_commas` parser option.
+379. [Kuan-Fu Wu](https://github.com/kfwu1999) fixed the example code for `json_pointer` initialization.
+380. [David Kilzer](https://github.com/ddkilzer) added a missing header to the input adapters.
+381. [Miko](https://github.com/mikomikotaishi) added proper C++20 module support, simplified the module API, and fixed missing exports.
+382. [hitgirl](https://github.com/hitgil) fixed the CMake configuration when cross-compiling.
+383. [Devon Thomas](https://github.com/ThomaDevOSU) mentioned the Artistic Style formatting in the contribution guidelines.
+384. [Erik Hu](https://github.com/Erikhu1) made Coveralls upload errors non-fatal in the CI.
+385. [co63oc](https://github.com/co63oc) fixed typos.
+386. [DmitriBogdanov](https://github.com/DmitriBogdanov) fixed broken package manager links in the documentation.
+387. [Bander](https://github.com/banderzhm) improved the MSVC compatibility of the C++ modules.
+388. [Andy Choi](https://github.com/ccpong) removed an unnecessary `template` keyword before `get` in the README and the documentation.
+389. [SamareshSingh](https://github.com/ssam18) fixed single-element brace initialization to copy/move instead of wrapping in an array, fixed the `WITH_DEFAULT` macros for `ordered_map`, and handled moved events in `serve_header.py`.
+390. [Aditya](https://github.com/Lumowhisp) improved the documentation of the documentation generation.
+391. [cheese1](https://github.com/cheese1) clarified the README.
+392. [KhloodElhossiny](https://github.com/khloodelhossiny) enabled `std::string_view` keys in `operator[]`.
+393. [Charles Cabergs](https://github.com/cacharle) fixed a `-Wtautological-constant-out-of-range-compare` warning.
+394. [EALePain](https://github.com/EALePain) made the `std::tuple` conversion work with reference types such as `std::tie`.
+395. [koala_oishi](https://github.com/chibi-dogs) fixed grammatical wording in the README.
+396. [riccardoori11](https://github.com/riccardoori11) fixed a typo in the documentation.
+397. [Swastik Bose](https://github.com/VasuBhakt) fixed the parent pointers after `update()` with `JSON_DIAGNOSTICS` and fixed the Doxygen autolinking of requirements.
+398. [trdesilva](https://github.com/trdesilva) added `front`, `pop_front`, and `push_front` to `json_pointer`.
+399. [Akhilesh Arora](https://github.com/akhilesharora) fixed an incomplete-type error with `ordered_json`.
+400. [Hariom Phulre](https://github.com/hariomphulre) fixed the C++20 modules compilation with GCC.
+401. [Kirill Lokotkov](https://github.com/RUSLoker) fixed printing `long double` values.
+402. [George Sedov](https://github.com/radistmorse) added the `NLOHMANN_DEFINE_TYPE_*_WITH_NAMES` macros.
+403. [Caillin Nugent](https://github.com/nugentcaillin) added the `NLOHMANN_JSON_SERIALIZE_ENUM_STRICT` macro.
+404. [Cosmin D.](https://github.com/drcosmin) fixed `std::filesystem::path` conversions and added an MSVC workaround for `std::unique_ptr`.
+405. [Paul Dreik](https://github.com/pauldreik) fixed a test relying on implementation-specific behavior.
+406. [Daniel Falk](https://github.com/daniel-falk) added missing copyright notices to the SBOM.
+407. [Federico Sfriso](https://github.com/federicosfriso05-dotcom) added support for constructing JSON values from C++20 range views.
+408. [Luke Banicevic](https://github.com/banaboi) fixed corrupt BSON output for lengths exceeding `INT32_MAX`, cleaned up the BSON writer, and improved the documentation.
+409. [Patrick Armstrong](https://github.com/Patrick10199) updated the CBOR references and the half-precision float assertions.
+410. [Yash Bavadiya](https://github.com/xevrion) added checks to all BSON reads.
+411. [hum4nBeing](https://github.com/hum4nBeing) fixed the overflow handling of high-precision numbers in UBJSON.
+412. [tomatotomata](https://github.com/tomatotomata) added checks for reading CBOR tagged subtypes.
+413. [YingqiDuan](https://github.com/YingqiDuan) documented the BSON interoperability.
+414. [KBS](https://github.com/youdie006) documented the standards compliance and the strictness of `parse()` and `operator>>`.
+415. [Petr Bělohlávek](https://github.com/petrbel) added Clang 21 and 22 to the CI.
+416. [Dmitry Rantovov](https://github.com/darkdi) fixed the placement of a CBOR documentation block.
+417. [ljcjclljc](https://github.com/ljcjclljc) fixed the comparison of large unsigned integers with signed integers.
+418. [Sahil Kamate](https://github.com/sahilkamate03) fixed the handling of CBOR tags 0-5 and 21-23.
+419. [Krishnanand G](https://github.com/Krishnanand-G) made the UBJSON writer reject `use_type` without `use_size`.
+420. [whn](https://github.com/Whning0513) documented the lenient BSON input handling and corrected the complexity of `to_bson`.
+421. [elix3r](https://github.com/22elix3r) fixed `update()` with `merge_objects` when merging a primitive into an object.
+422. [Avionic Harshit](https://github.com/avionicharshit-byte) made `diff()` linear when an array shrinks.
+423. [Qatadaha Bin Matloob](https://github.com/qatcod) fixed comparisons between integers and floats and fixed unparsable BJData output.
+424. [Wu Shuwen](https://github.com/dajiaohuang) removed an unused include.
 
 Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I forgot someone.
 
@@ -1879,21 +1851,28 @@ The library itself consists of a single header file licensed under the MIT licen
 - [**AppVeyor**](https://www.appveyor.com) for [continuous integration](https://ci.appveyor.com/project/nlohmann/json) on Windows
 - [**Artistic Style**](https://astyle.sourceforge.net) for automatic source code indentation
 - [**Clang**](https://clang.llvm.org) for compilation with code sanitizers
+- [**Clang-Tidy**](https://clang.llvm.org/extra/clang-tidy/) for static analysis and style checks
 - [**CMake**](https://cmake.org) for build automation
 - [**Codacy**](https://www.codacy.com) for further [code analysis](https://app.codacy.com/gh/nlohmann/json/dashboard)
+- [**CodeQL**](https://codeql.github.com) for code scanning
 - [**Coveralls**](https://coveralls.io) to measure [code coverage](https://coveralls.io/github/nlohmann/json)
 - [**Coverity Scan**](https://scan.coverity.com) for [static analysis](https://scan.coverity.com/projects/nlohmann-json)
 - [**cppcheck**](https://cppcheck.sourceforge.io) for static analysis
-- [**doctest**](https://github.com/onqtam/doctest) for the unit tests
-- [**GitHub Changelog Generator**](https://github.com/skywinder/github-changelog-generator) to generate the [ChangeLog](https://github.com/nlohmann/json/blob/develop/ChangeLog.md)
+- [**cpplint**](https://github.com/cpplint/cpplint) for style checks
+- [**doctest**](https://github.com/doctest/doctest) for the unit tests
+- [**Flawfinder**](https://dwheeler.com/flawfinder/) for static analysis
+- [**GitHub Changelog Generator**](https://github.com/github-changelog-generator/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
+- [**include-what-you-use**](https://include-what-you-use.org) to check the included headers
+- [**Infer**](https://fbinfer.com) for static analysis
 - [**lcov**](https://github.com/linux-test-project/lcov) to process coverage information and create an HTML view
 - [**libFuzzer**](https://llvm.org/docs/LibFuzzer.html) to implement fuzz testing for OSS-Fuzz
 - [**Material for MkDocs**](https://squidfunk.github.io/mkdocs-material/) for the style of the documentation site
 - [**MkDocs**](https://www.mkdocs.org) for the documentation site
 - [**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.
+- [**Semgrep**](https://semgrep.dev) for static analysis
 - [**Valgrind**](https://valgrind.org) to check for correct memory management
 
 ## Notes
@@ -1987,10 +1966,10 @@ If the testdata is not found, several test suites will fail like this:
 
 ```
 ===============================================================================
-json/tests/src/make_test_data_available.hpp:21:
+json/tests/src/make_test_data_available.hpp:26:
 TEST CASE:  check test suite is downloaded
 
-json/tests/src/make_test_data_available.hpp:23: FATAL ERROR: REQUIRE( utils::check_testsuite_downloaded() ) is NOT correct!
+json/tests/src/make_test_data_available.hpp:28: FATAL ERROR: REQUIRE( utils::check_testsuite_downloaded() ) is NOT correct!
   values: REQUIRE( false )
   logged: Test data not found in 'json/cmake-build-debug/json_test_data'.
           Please execute target 'download_test_data' before running this test suite.
@@ -2001,10 +1980,10 @@ json/tests/src/make_test_data_available.hpp:23: FATAL ERROR: REQUIRE( utils::che
 
 In case you have downloaded the library rather than checked out the code via Git, test `cmake_fetch_content_configure` will fail. Please execute `ctest -LE git_required` to skip these tests. See [issue #2189](https://github.com/nlohmann/json/issues/2189) for more information.
 
-Some tests are requiring network to be properly execute. They are labeled as `git_required`. Please execute `ctest -LE git_required` to skip these tests. See [issue #4851](https://github.com/nlohmann/json/issues/4851) for more information.
+Some tests require network access to execute properly. They are labeled as `git_required`. Please execute `ctest -LE git_required` to skip these tests. See [issue #4851](https://github.com/nlohmann/json/issues/4851) for more information.
 
 Some tests change the installed files and hence make the whole process not reproducible. Please execute `ctest -LE not_reproducible` to skip these tests. See [issue #2324](https://github.com/nlohmann/json/issues/2324) for more information. Furthermore, assertions must be switched off to ensure reproducible builds (see [discussion 4494](https://github.com/nlohmann/json/discussions/4494)).
 
-Note you need to call `cmake -LE "not_reproducible|git_required"` to exclude both labels. See [issue #2596](https://github.com/nlohmann/json/issues/2596) for more information.
+Note you need to call `ctest -LE "not_reproducible|git_required"` to exclude both labels. See [issue #2596](https://github.com/nlohmann/json/issues/2596) for more information.
 
 As Intel compilers use unsafe floating point optimization by default, the unit tests may fail. Use flag [`/fp:precise`](https://www.intel.com/content/www/us/en/docs/cpp-compiler/developer-guide-reference/2021-8/fp-model-fp.html) then.

REUSE.toml

@@ -10,10 +10,10 @@ SPDX-FileCopyrightText = "2013-2026 Niels Lohmann <https://nlohmann.me>"
 SPDX-License-Identifier = "MIT"
 
 [[annotations]]
-path = "include/nlohmann/thirdparty/hedley.hpp"
+path = "include/nlohmann/thirdparty/hedley/hedley.hpp"
 precedence = "aggregate"
 SPDX-FileCopyrightText = "2016-2021 Evan Nemerson <evan@nemerson.com>"
-SPDX-License-Identifier = "CC0"
+SPDX-License-Identifier = "CC0-1.0"
 
 [[annotations]]
 path = "include/nlohmann/detail/meta/cpp_future.hpp"
@@ -50,3 +50,9 @@ path = "tools/gdb_pretty_printer/**"
 precedence = "aggregate"
 SPDX-FileCopyrightText = "2020 Hannes Domani <https://github.com/ssbssa>"
 SPDX-License-Identifier = "MIT"
+
+[[annotations]]
+path = "docs/docset/icon*.png"
+precedence = "override"
+SPDX-FileCopyrightText = "JSON logo (public domain), https://commons.wikimedia.org/wiki/File:JSON_vector_logo.svg"
+SPDX-License-Identifier = "CC0-1.0"

cmake/ci.cmake

@@ -5,15 +5,14 @@ set(N 10)
 # Needed tools.
 ###############################################################################
 
-include(FindPython3)
 find_package(Python3 COMPONENTS Interpreter)
 
-find_program(CLANG_TOOL NAMES clang++-HEAD clang++ clang++-22 clang++-21 clang++-20 clang++-19 clang++-18 clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11 clang++)
+find_program(CLANG_TOOL NAMES clang++ clang++-HEAD clang++-22 clang++-21 clang++-20 clang++-19 clang++-18 clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11)
 execute_process(COMMAND ${CLANG_TOOL} --version OUTPUT_VARIABLE CLANG_TOOL_VERSION ERROR_VARIABLE CLANG_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TOOL_VERSION "${CLANG_TOOL_VERSION}")
 message(STATUS "🔖 Clang ${CLANG_TOOL_VERSION} (${CLANG_TOOL})")
 
-find_program(CLANG_TIDY_TOOL NAMES clang-tidy-22 clang-tidy-21 clang-tidy-20 clang-tidy-19 clang-tidy-18 clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy)
+find_program(CLANG_TIDY_TOOL NAMES clang-tidy clang-tidy-22 clang-tidy-21 clang-tidy-20 clang-tidy-19 clang-tidy-18 clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11)
 execute_process(COMMAND ${CLANG_TIDY_TOOL} --version OUTPUT_VARIABLE CLANG_TIDY_TOOL_VERSION ERROR_VARIABLE CLANG_TIDY_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TIDY_TOOL_VERSION "${CLANG_TIDY_TOOL_VERSION}")
 message(STATUS "🔖 Clang-Tidy ${CLANG_TIDY_TOOL_VERSION} (${CLANG_TIDY_TOOL})")
@@ -69,9 +68,7 @@ string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" VALGRIND_TOOL_VERSION "${VALGRIND_TOOL_V
 message(STATUS "🔖 Valgrind ${VALGRIND_TOOL_VERSION} (${VALGRIND_TOOL})")
 
 find_program(GENHTML_TOOL NAMES genhtml)
-find_program(PLOG_CONVERTER_TOOL NAMES plog-converter)
-find_program(PVS_STUDIO_ANALYZER_TOOL NAMES pvs-studio-analyzer)
-find_program(SCAN_BUILD_TOOL NAMES scan-build-15 scan-build-14 scan-build-13 scan-build-12 scan-build-11 scan-build)
+find_program(SCAN_BUILD_TOOL NAMES scan-build scan-build-22 scan-build-21 scan-build-20 scan-build-19 scan-build-18 scan-build-17 scan-build-16 scan-build-15 scan-build-14 scan-build-13 scan-build-12 scan-build-11)
 
 # the individual source files
 file(GLOB_RECURSE SRC_FILES ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp)
@@ -367,7 +364,7 @@ add_custom_target(ci_test_coverage
     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 --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage 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"
 )
@@ -392,8 +389,8 @@ add_custom_target(ci_test_clang_sanitizer
 # Check if header is amalgamated and sources are properly indented.
 ###############################################################################
 
-# Same file set as .github/workflows/check_amalgamation.yml, so a direct push to develop/master/release/*
-# (which only this CMake target checks, not the pull_request-only workflow) is held to the same standard.
+# Same file set as .github/workflows/check_amalgamation.yml, so this CMake target (which can be run locally) is held
+# to the same standard as the workflow (which runs for pull requests and for pushes to develop/master/release/*).
 file(GLOB_RECURSE INDENT_FILES
     ${PROJECT_SOURCE_DIR}/docs/mkdocs/docs/examples/*.hpp
     ${PROJECT_SOURCE_DIR}/docs/mkdocs/docs/examples/*.cpp
@@ -423,7 +420,7 @@ add_custom_target(ci_test_amalgamation
     COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json.json -s .
     COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json_fwd.json -s .
     COMMAND cp ${PROJECT_SOURCE_DIR}/include/nlohmann/json_literals.hpp ${include_dir}/json_literals.hpp
-    COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=none ${include_dir}/json.hpp ${include_dir}/json_fwd.hpp
+    COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=none ${include_dir}/json.hpp ${include_dir}/json_fwd.hpp ${include_dir}/json_literals.hpp
     COMMAND ${CMAKE_COMMAND} -P ${PROJECT_SOURCE_DIR}/cmake/scripts/gen_bazel_build_file.cmake
 
     COMMAND diff ${include_dir}/json.hpp~ ${include_dir}/json.hpp
@@ -434,6 +431,8 @@ add_custom_target(ci_test_amalgamation
     COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=orig ${INDENT_FILES}
     COMMAND for FILE in `find . -name '*.orig'`\; do false \; done
 
+    COMMAND rm -f ${include_dir}/json.hpp~ ${include_dir}/json_fwd.hpp~ ${include_dir}/json_literals.hpp~ ${PROJECT_SOURCE_DIR}/BUILD.bazel~
+
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
     COMMENT "Check amalgamation, formatting, and BUILD.bazel"
 )
@@ -719,7 +718,7 @@ ci_get_cmake(4.0.0  CMAKE_4_0_0_BINARY)
 
 # the tests require CMake 3.13 or later, so they are excluded for CMake 3.5.0
 set(JSON_CMAKE_FLAGS_3_5_0 JSON_Diagnostics JSON_Diagnostic_Positions JSON_GlobalUDLs JSON_ImplicitConversions JSON_DisableEnumSerialization
-    JSON_LegacyDiscardedValueComparison JSON_Install JSON_MultipleHeaders JSON_SystemInclude JSON_Valgrind
+    JSON_DisableTupleReferenceConversion JSON_LegacyDiscardedValueComparison JSON_Install JSON_MultipleHeaders JSON_SystemInclude JSON_Valgrind
     JSON_StrictNulHandling JSON_StrictBinaryUTF8 JSON_DeleteDeprecatedFunctions)
 set(JSON_CMAKE_FLAGS_3_31_6 JSON_BuildTests ${JSON_CMAKE_FLAGS_3_5_0})
 set(JSON_CMAKE_FLAGS_4_0_0 JSON_BuildTests ${JSON_CMAKE_FLAGS_3_5_0})
@@ -776,17 +775,14 @@ add_custom_target(ci_cmake_flags
 # Use more installed compilers.
 ###############################################################################
 
-foreach(COMPILER g++-4.8 g++-4.9 g++-5 g++-6 g++-7 g++-8 g++-9 g++-10 g++-11 clang++-3.5 clang++-3.6 clang++-3.7 clang++-3.8 clang++-3.9 clang++-4.0 clang++-5.0 clang++-6.0 clang++-7 clang++-8 clang++-9 clang++-10 clang++-11 clang++-12 clang++-13 clang++-14 clang++-15 clang++-16 clang++-17 clang++-18 clang++-19 clang++-20)
+foreach(COMPILER g++-4.8 g++-4.9 g++-5 g++-6)
     find_program(COMPILER_TOOL NAMES ${COMPILER})
     if (COMPILER_TOOL)
-        unset(ADDITIONAL_FLAGS)
-
         add_custom_target(ci_test_compiler_${COMPILER}
             COMMAND CXX=${COMPILER} ${CMAKE_COMMAND}
                 -DCMAKE_BUILD_TYPE=Debug -GNinja
                 -DJSON_BuildTests=ON -DJSON_FastTests=ON
                 -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
-                ${ADDITIONAL_FLAGS}
             COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
             COMMAND cd ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
             COMMENT "Compile and test with ${COMPILER}"
@@ -800,7 +796,6 @@ add_custom_target(ci_test_compiler_default
         -DCMAKE_BUILD_TYPE=Debug -GNinja
         -DJSON_BuildTests=ON -DJSON_FastTests=ON
         -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_compiler_default
-        ${ADDITIONAL_FLAGS}
     COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_compiler_default --parallel ${N}
     COMMAND cd ${PROJECT_BINARY_DIR}/build_compiler_default && ${CMAKE_CTEST_COMMAND} --parallel ${N} -LE git_required --output-on-failure
     COMMENT "Compile and test with default C++ compiler"
@@ -825,8 +820,10 @@ add_custom_target(ci_module_cpp20
     COMMAND ${CMAKE_COMMAND}
         -DCMAKE_BUILD_TYPE=Debug -GNinja
         -DJSON_CI=ON -DNLOHMANN_JSON_BUILD_MODULES=ON -DJSON_Install=ON
+        "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}"
         -S${PROJECT_SOURCE_DIR}/tests/module_cpp20 -B${PROJECT_BINARY_DIR}/ci_module_cpp20
     COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/ci_module_cpp20
+    VERBATIM
 )
 
 ###############################################################################

cmake/scripts/gen_bazel_build_file.cmake

@@ -49,6 +49,7 @@ cc_library(
     hdrs = [
         "single_include/nlohmann/json.hpp",
         "single_include/nlohmann/json_fwd.hpp",
+        "single_include/nlohmann/json_literals.hpp",
     ],
     includes = ["single_include"],
     visibility = ["//visibility:public"],

docs/README.md

@@ -7,12 +7,12 @@ This URL provides the most recent documentation and also applies to previous ver
 functions is not removed; instead, it is marked as deprecated.
 
 If you want to view the documentation for a specific tag or commit hash, you can generate it locally as follows (example
-using tag `v3.10.2`):
+using tag `v3.12.0`):
 
 ```shell
 git clone https://github.com/nlohmann/json.git
 cd json
-git checkout v3.10.2
+git checkout v3.12.0
 make install_venv serve -C docs/mkdocs
 ```
 

docs/docset/Makefile

@@ -1,48 +1,24 @@
 SHELL=/usr/bin/env bash
-SED ?= $(shell which gsed 2>/dev/null || which sed)
-
-MKDOCS_PAGES=$(shell cd ../mkdocs/docs/ && find * -type f -name '*.md' | sort)
+PYTHON=../mkdocs/venv/bin/python3
 
 .PHONY: all
 all: JSON_for_Modern_C++.tgz
 
-docSet.dsidx: docSet.sql
-	# generate index
-	sqlite3 docSet.dsidx <docSet.sql
+# generate the search index (the docset target does this itself, this is
+# only handy for inspecting the index)
+docSet.dsidx: generate_docset.py
+	$(PYTHON) generate_docset.py index docSet.dsidx
 
-JSON_for_Modern_C++.docset: Info.plist docSet.dsidx
-	rm -fr JSON_for_Modern_C++.docset JSON_for_Modern_C++.tgz
-	mkdir -p JSON_for_Modern_C++.docset/Contents/Resources/Documents/
-	cp icon*.png JSON_for_Modern_C++.docset
-	cp Info.plist JSON_for_Modern_C++.docset/Contents
-	# build and copy documentation
+# build the documentation and turn it into a self-contained docset
+.PHONY: JSON_for_Modern_C++.docset
+JSON_for_Modern_C++.docset:
 	$(MAKE) install_venv -C ../mkdocs
 	$(MAKE) build -C ../mkdocs
-	cp -r ../mkdocs/site/* JSON_for_Modern_C++.docset/Contents/Resources/Documents
-	# patch CSS to hide navigation items
-	echo -e "\n\nheader, footer, nav.md-tabs, nav.md-tabs--active, div.md-sidebar--primary, a.md-content__button { display: none; }" >> "$$(ls JSON_for_Modern_C++.docset/Contents/Resources/Documents/assets/stylesheets/main.*.min.css)"
-	# fix spacing
-	echo -e "\n\ndiv.md-sidebar div.md-sidebar--secondary, div.md-main__inner { top: 0; margin-top: 0 }" >> "$$(ls JSON_for_Modern_C++.docset/Contents/Resources/Documents/assets/stylesheets/main.*.min.css)"
-	# remove "JSON for Modern C++" from page titles (fallback)
-	find JSON_for_Modern_C++.docset/Contents/Resources/Documents -type f -exec $(SED) -i 's| - JSON for Modern C++</title>|</title>|' {} +
-	# replace page titles with name from index, if available
-	for page in $(MKDOCS_PAGES); do \
-		case "$$page" in \
-			*/index.md) path=$${page/\/index.md/} ;; \
-			*)          path=$${page/.md/}        ;; \
-		esac; \
-		title=$$(sqlite3 docSet.dsidx "SELECT name FROM searchIndex WHERE path='$$path/index.html'" | tr '\n' ',' | $(SED) -e 's/,/, /g' -e 's/, $$/\n/'); \
-		if [ "x$$title" != "x" ]; then \
-			$(SED) -i "s%<title>.*</title>%<title>$$title</title>%" "JSON_for_Modern_C++.docset/Contents/Resources/Documents/$$path/index.html"; \
-		fi \
-	done
-	# clean up
-	rm JSON_for_Modern_C++.docset/Contents/Resources/Documents/sitemap.*
-	# copy index
-	cp docSet.dsidx JSON_for_Modern_C++.docset/Contents/Resources/
+	$(PYTHON) generate_docset.py docset ../mkdocs/site .
 
+.PHONY: JSON_for_Modern_C++.tgz
 JSON_for_Modern_C++.tgz: JSON_for_Modern_C++.docset
-	tar --exclude='.DS_Store' -cvzf JSON_for_Modern_C++.tgz JSON_for_Modern_C++.docset
+	$(PYTHON) generate_docset.py tgz .
 
 # install docset for Zeal documentation browser (https://zealdocs.org/)
 .PHONY: install_docset_zeal
@@ -52,26 +28,6 @@ install_docset_zeal: JSON_for_Modern_C++.docset
 	mkdir -p $$docset_root; \
 	cp -r JSON_for_Modern_C++.docset $$docset_root/
 
-# both targets below compare the docset search index with the mkdocs page
-# set. They share the same normalization (docs/foo/index.md and
-# docs/foo.md both become foo/index.html, the URL mkdocs itself would
-# give the page; the top-level index.md is excluded, as it is not part
-# of the hand-curated docSet.sql) and use comm(1) on two sorted lists
-# instead of running a sqlite3 query, or an O(n*m) nested shell loop,
-# once per page.
-DOCSET_INDEX_PATHS=$(shell sqlite3 docSet.dsidx "SELECT DISTINCT path FROM searchIndex" | sort)
-DOCSET_PAGE_PATHS=$(shell echo '$(MKDOCS_PAGES)' | tr ' ' '\n' | grep -v '^index\.md$$' | $(SED) -E 's@/index\.md$$@/index.html@; s@\.md$$@/index.html@' | sort)
-
-# list mkdocs pages missing from the docset index
-.PHONY: list_missing_pages
-list_missing_pages: docSet.dsidx
-	@comm -23 <(echo '$(DOCSET_PAGE_PATHS)' | tr ' ' '\n') <(echo '$(DOCSET_INDEX_PATHS)' | tr ' ' '\n')
-
-# list paths in the docset index without a corresponding mkdocs page
-.PHONY: list_removed_paths
-list_removed_paths: docSet.dsidx
-	@comm -13 <(echo '$(DOCSET_PAGE_PATHS)' | tr ' ' '\n') <(echo '$(DOCSET_INDEX_PATHS)' | tr ' ' '\n')
-
 .PHONY: clean
 clean:
 	rm -f docSet.dsidx

docs/docset/README.md

@@ -4,7 +4,8 @@ The folder contains the required files to create a [docset](https://kapeli.com/d
 documentation browsers like [Dash](https://kapeli.com/dash), [Velocity](https://velocity.silverlakesoftware.com), or
 [Zeal](https://zealdocs.org).
 
-The docset can be created with
+The docset (pages and search index) is generated by `generate_docset.py` from the mkdocs site and `mkdocs.yml`. It
+can be created with
 
 ```sh
 make JSON_for_Modern_C++.docset
@@ -12,6 +13,7 @@ make JSON_for_Modern_C++.docset
 
 The generated folder `JSON_for_Modern_C++.docset` can then be opened in the documentation browser. `make all` builds a
 `JSON_for_Modern_C++.tgz` archive instead, and `make install_docset_zeal` installs the docset for Zeal directly.
+`make docSet.dsidx` builds only the search index.
 
 A recent version is also part of the [Dash user contributions](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B).
 

docs/docset/docSet.sql

@@ -1,289 +0,0 @@
-DROP TABLE IF EXISTS searchIndex;
-CREATE TABLE searchIndex(id INTEGER PRIMARY KEY, name TEXT, type TEXT, path TEXT);
-CREATE UNIQUE INDEX anchor ON searchIndex (name, type, path);
-
--- API
-INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer', 'Class', 'api/adl_serializer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer::from_json', 'Function', 'api/adl_serializer/from_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer::to_json', 'Function', 'api/adl_serializer/to_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype', 'Class', 'api/byte_container_with_subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::byte_container_with_subtype', 'Constructor', 'api/byte_container_with_subtype/byte_container_with_subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::clear_subtype', 'Method', 'api/byte_container_with_subtype/clear_subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::has_subtype', 'Method', 'api/byte_container_with_subtype/has_subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::operator!=', 'Operator', 'api/byte_container_with_subtype/operator_ne/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::operator==', 'Operator', 'api/byte_container_with_subtype/operator_eq/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::set_subtype', 'Method', 'api/byte_container_with_subtype/set_subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::subtype', 'Method', 'api/byte_container_with_subtype/subtype/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json', 'Class', 'api/basic_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('format_as', 'Function', 'api/basic_json/format_as/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::accept', 'Function', 'api/basic_json/accept/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::array', 'Function', 'api/basic_json/array/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::array_t', 'Type', 'api/basic_json/array_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::as_base_class', 'Method', 'api/basic_json/as_base_class/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::at', 'Method', 'api/basic_json/at/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::back', 'Method', 'api/basic_json/back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::basic_json', 'Constructor', 'api/basic_json/basic_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::begin', 'Method', 'api/basic_json/begin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::binary', 'Function', 'api/basic_json/binary/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::binary_t', 'Type', 'api/basic_json/binary_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::boolean_t', 'Type', 'api/basic_json/boolean_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cbegin', 'Method', 'api/basic_json/cbegin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cbor_tag_handler_t', 'Enum', 'api/basic_json/cbor_tag_handler_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cend', 'Method', 'api/basic_json/cend/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::clear', 'Method', 'api/basic_json/clear/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::contains', 'Method', 'api/basic_json/contains/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::count', 'Method', 'api/basic_json/count/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::crbegin', 'Method', 'api/basic_json/crbegin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::crend', 'Method', 'api/basic_json/crend/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::default_object_comparator_t', 'Type', 'api/basic_json/default_object_comparator_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::diff', 'Function', 'api/basic_json/diff/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::dump', 'Method', 'api/basic_json/dump/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::emplace', 'Method', 'api/basic_json/emplace/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::emplace_back', 'Method', 'api/basic_json/emplace_back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::empty', 'Method', 'api/basic_json/empty/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::end', 'Method', 'api/basic_json/end/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::end_pos', 'Method', 'api/basic_json/end_pos/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::erase', 'Method', 'api/basic_json/erase/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::error_handler_t', 'Enum', 'api/basic_json/error_handler_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::exception', 'Class', 'api/basic_json/exception/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::find', 'Method', 'api/basic_json/find/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::flatten', 'Method', 'api/basic_json/flatten/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_bjdata', 'Function', 'api/basic_json/from_bjdata/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_bson', 'Function', 'api/basic_json/from_bson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_cbor', 'Function', 'api/basic_json/from_cbor/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_msgpack', 'Function', 'api/basic_json/from_msgpack/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_bon8', 'Function', 'api/basic_json/from_bon8/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_ubjson', 'Function', 'api/basic_json/from_ubjson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::front', 'Method', 'api/basic_json/front/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get', 'Method', 'api/basic_json/get/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_allocator', 'Function', 'api/basic_json/get_allocator/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_binary', 'Method', 'api/basic_json/get_binary/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_ptr', 'Method', 'api/basic_json/get_ptr/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_ref', 'Method', 'api/basic_json/get_ref/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_to', 'Method', 'api/basic_json/get_to/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::input_format_t', 'Enum', 'api/basic_json/input_format_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::insert', 'Method', 'api/basic_json/insert/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::invalid_iterator', 'Class', 'api/basic_json/invalid_iterator/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_array', 'Method', 'api/basic_json/is_array/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_binary', 'Method', 'api/basic_json/is_binary/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_boolean', 'Method', 'api/basic_json/is_boolean/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_discarded', 'Method', 'api/basic_json/is_discarded/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_null', 'Method', 'api/basic_json/is_null/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number', 'Method', 'api/basic_json/is_number/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_float', 'Method', 'api/basic_json/is_number_float/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_integer', 'Method', 'api/basic_json/is_number_integer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_unsigned', 'Method', 'api/basic_json/is_number_unsigned/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_object', 'Method', 'api/basic_json/is_object/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_primitive', 'Method', 'api/basic_json/is_primitive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_string', 'Method', 'api/basic_json/is_string/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_structured', 'Method', 'api/basic_json/is_structured/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::items', 'Method', 'api/basic_json/items/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::json_base_class_t', 'Type', 'api/basic_json/json_base_class_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::json_serializer', 'Class', 'api/basic_json/json_serializer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::max_size', 'Method', 'api/basic_json/max_size/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::merge_patch', 'Method', 'api/basic_json/merge_patch/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::meta', 'Function', 'api/basic_json/meta/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_float_t', 'Type', 'api/basic_json/number_float_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_integer_t', 'Type', 'api/basic_json/number_integer_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_unsigned_t', 'Type', 'api/basic_json/number_unsigned_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object', 'Function', 'api/basic_json/object/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object_comparator_t', 'Type', 'api/basic_json/object_comparator_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object_t', 'Type', 'api/basic_json/object_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator ValueType', 'Operator', 'api/basic_json/operator_ValueType/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator value_t', 'Operator', 'api/basic_json/operator_value_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator[]', 'Operator', 'api/basic_json/operator[]/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator=', 'Operator', 'api/basic_json/operator=/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator+=', 'Operator', 'api/basic_json/operator+=/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator==', 'Operator', 'api/basic_json/operator_eq/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator!=', 'Operator', 'api/basic_json/operator_ne/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<', 'Operator', 'api/basic_json/operator_lt/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<=', 'Operator', 'api/basic_json/operator_le/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator>', 'Operator', 'api/basic_json/operator_gt/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator>=', 'Operator', 'api/basic_json/operator_ge/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<=>', 'Operator', 'api/basic_json/operator_spaceship/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::out_of_range', 'Class', 'api/basic_json/out_of_range/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::other_error', 'Class', 'api/basic_json/other_error/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse', 'Function', 'api/basic_json/parse/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse_error', 'Class', 'api/basic_json/parse_error/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse_event_t', 'Enum', 'api/basic_json/parse_event_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parser_callback_t', 'Type', 'api/basic_json/parser_callback_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::patch', 'Method', 'api/basic_json/patch/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::patch_inplace', 'Method', 'api/basic_json/patch_inplace/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::push_back', 'Method', 'api/basic_json/push_back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::rbegin', 'Method', 'api/basic_json/rbegin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::rend', 'Method', 'api/basic_json/rend/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::sax_parse', 'Function', 'api/basic_json/sax_parse/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::size', 'Method', 'api/basic_json/size/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::start_pos', 'Method', 'api/basic_json/start_pos/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::string_t', 'Type', 'api/basic_json/string_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::swap', 'Method', 'api/basic_json/swap/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type', 'Method', 'api/basic_json/type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type_error', 'Class', 'api/basic_json/type_error/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type_name', 'Method', 'api/basic_json/type_name/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::unflatten', 'Method', 'api/basic_json/unflatten/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::update', 'Method', 'api/basic_json/update/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_bjdata', 'Function', 'api/basic_json/to_bjdata/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_bson', 'Function', 'api/basic_json/to_bson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_cbor', 'Function', 'api/basic_json/to_cbor/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_msgpack', 'Function', 'api/basic_json/to_msgpack/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_bon8', 'Function', 'api/basic_json/to_bon8/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_string', 'Method', 'api/basic_json/to_string/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_ubjson', 'Function', 'api/basic_json/to_ubjson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value', 'Method', 'api/basic_json/value/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value_t', 'Enum', 'api/basic_json/value_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::with_t', 'Type', 'api/basic_json/with_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::~basic_json', 'Method', 'api/basic_json/~basic_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json', 'Class', 'api/json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer', 'Class', 'api/json_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::back', 'Method', 'api/json_pointer/back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::empty', 'Method', 'api/json_pointer/empty/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::front', 'Method', 'api/json_pointer/front/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::json_pointer', 'Constructor', 'api/json_pointer/json_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator==', 'Operator', 'api/json_pointer/operator_eq/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator!=', 'Operator', 'api/json_pointer/operator_ne/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator/', 'Operator', 'api/json_pointer/operator_slash/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator/=', 'Operator', 'api/json_pointer/operator_slasheq/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator string_t', 'Operator', 'api/json_pointer/operator_string_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator<=>', 'Operator', 'api/json_pointer/operator_spaceship/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::parent_pointer', 'Method', 'api/json_pointer/parent_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::pop_back', 'Method', 'api/json_pointer/pop_back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::pop_front', 'Method', 'api/json_pointer/pop_front/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::push_back', 'Method', 'api/json_pointer/push_back/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::push_front', 'Method', 'api/json_pointer/push_front/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::string_t', 'Type', 'api/json_pointer/string_t/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::to_string', 'Method', 'api/json_pointer/to_string/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax', 'Class', 'api/json_sax/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::binary', 'Method', 'api/json_sax/binary/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::boolean', 'Method', 'api/json_sax/boolean/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::end_array', 'Method', 'api/json_sax/end_array/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::end_object', 'Method', 'api/json_sax/end_object/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::key', 'Method', 'api/json_sax/key/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::null', 'Method', 'api/json_sax/null/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_float', 'Method', 'api/json_sax/number_float/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_integer', 'Method', 'api/json_sax/number_integer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_unsigned', 'Method', 'api/json_sax/number_unsigned/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::parse_error', 'Method', 'api/json_sax/parse_error/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::start_array', 'Method', 'api/json_sax/start_array/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::start_object', 'Method', 'api/json_sax/start_object/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::string', 'Method', 'api/json_sax/string/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('operator""_json', 'Literal', 'api/operator_literal_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('operator""_json_pointer', 'Literal', 'api/operator_literal_json_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('operator<<', 'Operator', 'api/operator_ltlt/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('operator>>', 'Operator', 'api/operator_gtgt/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('ordered_json', 'Class', 'api/ordered_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('ordered_map', 'Class', 'api/ordered_map/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('std::formatter<basic_json>', 'Class', 'api/basic_json/std_formatter/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('std::hash<basic_json>', 'Class', 'api/basic_json/std_hash/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('std::swap<basic_json>', 'Function', 'api/basic_json/std_swap/index.html');
-
--- Features
-INSERT INTO searchIndex(name, type, path) VALUES ('Arbitrary Type Conversions', 'Guide', 'features/arbitrary_types/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats', 'Guide', 'features/binary_formats/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: BJData', 'Guide', 'features/binary_formats/bjdata/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: BSON', 'Guide', 'features/binary_formats/bson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: CBOR', 'Guide', 'features/binary_formats/cbor/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: MessagePack', 'Guide', 'features/binary_formats/messagepack/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: BON8', 'Guide', 'features/binary_formats/bon8/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: UBJSON', 'Guide', 'features/binary_formats/ubjson/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Binary Values', 'Guide', 'features/binary_values/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Comments', 'Guide', 'features/comments/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Element Access', 'Guide', 'features/element_access/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Access with default value: value', 'Guide', 'features/element_access/default_value/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Checked access: at', 'Guide', 'features/element_access/checked_access/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Unchecked access: operator[]', 'Guide', 'features/element_access/unchecked_access/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Exceptions', 'Guide', 'home/exceptions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Migration Guide', 'Guide', 'integration/migration_guide/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Integration: CMake', 'Guide', 'integration/cmake/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Header only', 'Guide', 'integration/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Package Managers', 'Guide', 'integration/package_managers/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Pkg-config', 'Guide', 'integration/pkg-config/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Iterators', 'Guide', 'features/iterators/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON Merge Patch', 'Guide', 'features/merge_patch/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON Patch and Diff', 'Guide', 'features/json_patch/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON Pointer', 'Guide', 'features/json_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('nlohmann Namespace', 'Guide', 'features/namespace/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Types', 'Guide', 'features/types/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Types: Number Handling', 'Guide', 'features/types/number_handling/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Object Order', 'Guide', 'features/object_order/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Performance', 'Guide', 'features/performance/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing', 'Guide', 'features/parsing/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: JSON Lines', 'Guide', 'features/parsing/json_lines/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: Parser Callbacks', 'Guide', 'features/parsing/parser_callbacks/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: Parsing and Exceptions', 'Guide', 'features/parsing/parse_exceptions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: SAX Interface', 'Guide', 'features/parsing/sax_interface/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: Untrusted Input', 'Guide', 'features/parsing/untrusted_input/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Runtime Assertions', 'Guide', 'features/assertions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Specializing enum conversion', 'Guide', 'features/enum_conversion/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Supported Macros', 'Guide', 'features/macros/index.html');
-
--- Macros
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_ASSERT', 'Macro', 'api/macros/json_assert/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_BRACE_INIT_COPY_SEMANTICS', 'Macro', 'api/macros/json_brace_init_copy_semantics/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_CATCH_USER', 'Macro', 'api/macros/json_throw_user/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DELETE_DEPRECATED_FUNCTIONS', 'Macro', 'api/macros/json_delete_deprecated_functions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTICS', 'Macro', 'api/macros/json_diagnostics/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTIC_POSITIONS', 'Macro', 'api/macros/json_diagnostic_positions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_ENUM_SERIALIZATION', 'Macro', 'api/macros/json_disable_enum_serialization/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_TUPLE_REFERENCE_CONVERSION', 'Macro', 'api/macros/json_disable_tuple_reference_conversion/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_11', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_14', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_17', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_20', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_23', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_26', 'Macro', 'api/macros/json_has_cpp_11/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_EXPERIMENTAL_FILESYSTEM', 'Macro', 'api/macros/json_has_filesystem/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_FILESYSTEM', 'Macro', 'api/macros/json_has_filesystem/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_RANGES', 'Macro', 'api/macros/json_has_ranges/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_STATIC_RTTI', 'Macro', 'api/macros/json_has_static_rtti/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_STD_FORMAT', 'Macro', 'api/macros/json_has_std_format/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_THREE_WAY_COMPARISON', 'Macro', 'api/macros/json_has_three_way_comparison/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NOEXCEPTION', 'Macro', 'api/macros/json_noexception/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NO_AUTOMATIC_UDLS', 'Macro', 'api/macros/json_no_automatic_udls/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NO_IO', 'Macro', 'api/macros/json_no_io/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NO_THREAD_LOCAL', 'Macro', 'api/macros/json_no_thread_local/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_PRECISE_STREAM_POSITION', 'Macro', 'api/macros/json_precise_stream_position/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_SKIP_LIBRARY_VERSION_CHECK', 'Macro', 'api/macros/json_skip_library_version_check/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_SKIP_UNSUPPORTED_COMPILER_CHECK', 'Macro', 'api/macros/json_skip_unsupported_compiler_check/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_STRICT_BINARY_UTF8', 'Macro', 'api/macros/json_strict_binary_utf8/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_STRICT_NUL_HANDLING', 'Macro', 'api/macros/json_strict_nul_handling/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_THROW_USER', 'Macro', 'api/macros/json_throw_user/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_TRY_USER', 'Macro', 'api/macros/json_throw_user/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_GLOBAL_UDLS', 'Macro', 'api/macros/json_use_global_udls/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_IMPLICIT_CONVERSIONS', 'Macro', 'api/macros/json_use_implicit_conversions/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON', 'Macro', 'api/macros/json_use_legacy_discarded_value_comparison/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_OBJECTS_FOR_ENUM_KEYED_MAPS', 'Macro', 'api/macros/json_use_objects_for_enum_keyed_maps/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_SIMDUTF', 'Macro', 'api/macros/json_use_simdutf/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Macros', 'Macro', 'api/macros/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_derived_type/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_type_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE', 'Macro', 'api/macros/nlohmann_define_type_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_type_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_type_non_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE', 'Macro', 'api/macros/nlohmann_define_type_non_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_type_non_intrusive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_NAMES', 'Macro', 'api/macros/nlohmann_define_type_with_names/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE', 'Macro', 'api/macros/nlohmann_json_namespace/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_BEGIN', 'Macro', 'api/macros/nlohmann_json_namespace_begin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_END', 'Macro', 'api/macros/nlohmann_json_namespace_begin/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_NO_VERSION', 'Macro', 'api/macros/nlohmann_json_namespace_no_version/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_SERIALIZE_ENUM', 'Macro', 'api/macros/nlohmann_json_serialize_enum/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_SERIALIZE_ENUM_STRICT', 'Macro', 'api/macros/nlohmann_json_serialize_enum_strict/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_MAJOR', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_MINOR', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_PATCH', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');

docs/docset/generate_docset.py

@@ -0,0 +1,532 @@
+#!/usr/bin/env python3
+
+"""Generate the Dash docset search index from the mkdocs sources."""
+
+import argparse
+import glob
+import hashlib
+import html
+import os
+import re
+import shutil
+import sqlite3
+import sys
+import tarfile
+import urllib.parse
+import urllib.request
+
+import yaml
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+MKDOCS_YML = os.path.join(HERE, '..', 'mkdocs', 'mkdocs.yml')
+PAGES = os.path.join(HERE, '..', 'mkdocs', 'docs')
+
+# api pages whose (name, type) cannot be derived by the heuristics
+OVERRIDES = {
+}
+
+DOCSET = 'JSON_for_Modern_C++.docset'
+TITLE_SUFFIX = ' - JSON for Modern C++</title>'
+
+# CSS rules appended to the stylesheet: hide navigation items and fix spacing
+# hide the navigation (the documentation browser has its own); Material's class selectors would win over element
+# selectors, hence the classes and !important
+CSS_PATCH = (
+    '\n\n.md-header, .md-footer, .md-tabs, .md-sidebar--primary, .md-content__button { display: none !important; }'
+    '\n\n.md-sidebar--secondary, .md-main__inner { top: 0 !important; margin-top: 0 !important; }'
+)
+
+USER_AGENT = ('Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 '
+              '(KHTML, like Gecko) Chrome/124.0 Safari/537.36')
+CONTENT_TYPE_EXT = {'image/svg+xml': '.svg', 'image/png': '.png', 'image/jpeg': '.jpg',
+                    'image/gif': '.gif', 'image/webp': '.webp'}
+
+# remote loads that are allowed to remain (URL -> reason)
+ALLOWED_REMOTE = {
+    # Material only loads this polyfill if the browser has no ResizeObserver
+    'https://unpkg.com/resize-observer-polyfill': 'fallback for browsers without ResizeObserver',
+}
+
+problems = []
+
+
+def problem(page, reason) -> None:
+    """Record a problem; all problems are reported at the end."""
+    problems.append(f'generate_docset.py: {page}: {reason}')
+
+
+class Loader(yaml.SafeLoader):
+    """YAML loader that tolerates the custom tags used in mkdocs.yml."""
+
+
+Loader.add_multi_constructor('', lambda loader, suffix, node: None)
+
+
+def walk_nav(items, groups=()):
+    """Yield (group titles, nav title or None, md path) for all nav leaves."""
+    for item in items:
+        if isinstance(item, str):
+            yield list(groups), None, item
+        elif isinstance(item, dict):
+            for title, value in item.items():
+                if isinstance(value, list):
+                    yield from walk_nav(value, groups + (str(title),))
+                else:
+                    yield list(groups), str(title), value
+
+
+def page_path(md_path) -> str:
+    """Map a markdown path to the HTML path of the rendered page."""
+    if md_path.endswith('/index.md'):
+        return md_path[:-len('index.md')] + 'index.html'
+    return md_path[:-len('.md')] + '/index.html'
+
+
+def read_page(md_path) -> str:
+    """Read a page (resolving a snippet include), return '' if it does not exist."""
+    try:
+        with open(os.path.join(PAGES, md_path), encoding='utf-8') as f:
+            text = f.read()
+        m = re.match(r'--8<-- "(.+)"\s*$', text)
+        if m:
+            with open(os.path.join(PAGES, m.group(1)), encoding='utf-8') as f:
+                text = f.read()
+        return text
+    except OSError:
+        return ''
+
+
+def clean(text) -> str:
+    """Strip tags and entities from a heading and normalize whitespace."""
+    text = text.replace('\\>', '\x00')  # escaped '>' is not the end of a tag
+    text = html.unescape(re.sub(r'</?[a-zA-Z][^>]*>', '', text)).replace('\x00', '>')
+    return re.sub(r'\s+', ' ', text).strip()
+
+
+def strip_fences(text) -> str:
+    """Remove fenced code blocks (their lines may start with '# ')."""
+    return re.sub(r'^(```|~~~).*?^\1[^\n]*$', '', text, flags=re.M | re.S)
+
+
+def get_h1(text):
+    """Return the cleaned first H1 of a page or None."""
+    body = strip_fences(text)
+    m = re.search(r'^# (.+)$', body, flags=re.M)
+    if m:
+        return clean(m.group(1))
+    m = re.search(r'<h1>(.*?)</h1>', body, flags=re.S)
+    return clean(m.group(1)) if m else None
+
+
+def split_top_level(text, seps=','):
+    """Split at separators that are not nested in <>, () or []."""
+    parts, depth, current = [], 0, ''
+    for c in text:
+        if c in '<([':
+            depth += 1
+        elif c in '>)]':
+            depth -= 1
+        if c in seps and depth <= 0:
+            parts.append(current)
+            current = ''
+        else:
+            current += c
+    parts.append(current)
+    return [p.strip() for p in parts if p.strip()]
+
+
+OPERATOR_SYMBOLS = ('<=>', '<<', '>>', '<=', '>=', '<', '>')
+
+
+def api_names(h1) -> list:
+    """Derive the entry names from the H1 of an api page."""
+    # hide the angle brackets of operators from the nesting detection
+    for i, sym in enumerate(OPERATOR_SYMBOLS):
+        h1 = h1.replace('operator' + sym, f'operator\x01{i}\x01')
+    names = []
+    for part in split_top_level(h1):
+        name = part.replace('\\', '').replace('nlohmann::', '')
+        name = re.sub(r'\x01(\d)\x01', lambda m: OPERATOR_SYMBOLS[int(m.group(1))], name)
+        # drop qualifiers like "operator<<(basic_json)", but keep "operator()"
+        if not name.endswith('operator()'):
+            name = re.sub(r'(?<=\w|[<>=!+\-*/\[\]])\([^()]*\)$', '', name)
+        if name not in names:
+            names.append(name)
+    return names
+
+
+def first_cpp_block(text):
+    """Return the first ```cpp block following the H1."""
+    m = re.search(r'^# .*?^```cpp\n(.*?)^```', text, flags=re.M | re.S)
+    return m.group(1) if m else None
+
+
+def api_type(name, decl):
+    """Determine the Dash entry type from name and declaration."""
+    parts = name.split('::')
+    last = parts[-1]
+    if name.startswith('operator""'):
+        return 'Literal'
+    if last.startswith('operator'):
+        return 'Operator'
+    if decl is None:
+        return None
+    if re.search(r'\benum\b', decl):
+        return 'Enum'
+    if re.search(r'^\s*(template\s*<.*>\s*)?(class|struct)\s+\w+\s*(final\b|[:{;<]|$)', decl, flags=re.M):
+        return 'Class'
+    if re.search(r'\busing\s+\w+\s*=', decl) or 'typedef' in decl:
+        return 'Type'
+    if len(parts) > 1 and last == parts[-2]:
+        return 'Constructor'
+    if last.startswith('~'):
+        return 'Method'
+    if re.search(r'\bstatic\b', decl) or len(parts) == 1 or parts[0] == 'std':
+        return 'Function'
+    return 'Method'
+
+
+def macro_names(h1) -> list:
+    """Split the H1 of a macro page into macro names."""
+    return [n.strip() for n in re.split(r'[,/]', h1) if n.strip()]
+
+
+def api_entries(md_path):
+    """Return the (name, type) pairs of an api page."""
+    if md_path in OVERRIDES:
+        return OVERRIDES[md_path]
+    if md_path == 'api/macros/index.md':
+        return [('Macros', 'Macro')]
+    text = read_page(md_path)
+    h1 = get_h1(text)
+    if not h1:
+        problem(md_path, 'no H1 found')
+        return []
+    if md_path.startswith('api/macros/'):
+        return [(n, 'Macro') for n in macro_names(h1)]
+    names = api_names(h1)
+    if not names:
+        problem(md_path, 'no names found')
+        return []
+    decl = first_cpp_block(text)
+    result = []
+    for name in names:
+        kind = api_type(name, decl)
+        if kind is None:
+            problem(md_path, f'no type determinable for {name}')
+        else:
+            result.append((name, kind))
+    return result
+
+
+def guide_entries(nav):
+    """Yield (name, type, md path) for all non-api nav pages."""
+    for groups, title, md_path in walk_nav(nav):
+        if md_path.startswith('api/') or md_path == 'index.md':
+            continue
+        if not md_path.endswith('.md'):
+            continue
+        groups = groups[1:]  # drop the top-level tab
+        if title is None:
+            title = get_h1(read_page(md_path))
+            if not title:
+                problem(md_path, 'no title found')
+                continue
+        # "Parsing: Parsing Untrusted Input" -> "Parsing: Untrusted Input"
+        if groups and title.startswith(groups[-1] + ' ') and title[len(groups[-1]) + 1:][:1].isupper():
+            title = title[len(groups[-1]) + 1:]
+        if md_path.endswith('/index.md') and groups and title == groups[-1]:
+            name = ': '.join(groups)
+        else:
+            name = ': '.join(groups + [title])
+        yield name, 'Guide', md_path
+
+
+def build_entries() -> list:
+    """Return the sorted list of (name, type, path) index entries."""
+    nav = load_mkdocs_yml()['nav']
+
+    entries = set()
+    for name, kind, md_path in guide_entries(nav):
+        entries.add((name, kind, page_path(md_path)))
+
+    api_root = os.path.join(PAGES, 'api')
+    on_disk = set()
+    for root, _, files in os.walk(api_root):
+        for file in files:
+            if file.endswith('.md'):
+                rel = os.path.relpath(os.path.join(root, file), PAGES)
+                on_disk.add(rel.replace(os.sep, '/'))
+    for _, _, md_path in walk_nav(nav):
+        if md_path.startswith('api/') and md_path not in on_disk:
+            problem(md_path, 'listed in nav but missing on disk')
+    for md_path in sorted(on_disk):
+        for name, kind in api_entries(md_path):
+            entries.add((name, kind, page_path(md_path)))
+    return sorted(entries)
+
+
+def write_index(entries, out) -> None:
+    """Write the entries into a SQLite search index."""
+    if os.path.exists(out):
+        os.remove(out)
+    con = sqlite3.connect(out)
+    con.execute('CREATE TABLE searchIndex(id INTEGER PRIMARY KEY, name TEXT, type TEXT, path TEXT)')
+    con.execute('CREATE UNIQUE INDEX anchor ON searchIndex (name, type, path)')
+    con.executemany('INSERT INTO searchIndex(name, type, path) VALUES (?, ?, ?)', entries)
+    con.commit()
+    con.close()
+
+
+def html_files(root):
+    """Yield all HTML files below root."""
+    for base, _, files in os.walk(root):
+        for file in files:
+            if file.endswith('.html'):
+                yield os.path.join(base, file)
+
+
+def read(path) -> str:
+    with open(path, encoding='utf-8') as f:
+        return f.read()
+
+
+def write(path, text) -> None:
+    with open(path, 'w', encoding='utf-8') as f:
+        f.write(text)
+
+
+def remove_source_widget(docs) -> None:
+    """Drop data-md-component=source so Material does not query api.github.com for the stars and version."""
+    pattern = re.compile(r'\sdata-md-component=(?:"source"|source\b)')
+    for path in html_files(docs):
+        text = read(path)
+        new = pattern.sub('', text)
+        if new != text:
+            write(path, new)
+
+
+def patch_titles(docs, entries) -> None:
+    """Strip the site name from all titles; use the index names where available."""
+    names = {}
+    for name, _, path in entries:
+        names.setdefault(path, []).append(name)
+    for file in html_files(docs):
+        rel = os.path.relpath(file, docs).replace(os.sep, '/')
+        text = read(file).replace(TITLE_SUFFIX, '</title>')
+        if rel in names:
+            title = html.escape(', '.join(names[rel]), quote=False)
+            text = re.sub(r'<title>.*?</title>', lambda _: f'<title>{title}</title>', text, count=1, flags=re.S)
+        write(file, text)
+
+
+IMG_RE = re.compile(r'<img\b[^>]*>', re.I)
+ATTR_RE = r'''(?:{0})\s*=\s*(?:"([^"]*)"|'([^']*)'|([^\s"'>]+))'''
+
+
+def attr(tag, name):
+    """Return the value of an attribute in a tag or None."""
+    m = re.search(r'(?<![\w-])' + ATTR_RE.format(name), tag, flags=re.I)
+    return next(g for g in m.groups() if g is not None) if m else None
+
+
+def is_remote(url) -> bool:
+    return re.match(r'(https?:)?//', url.strip(), flags=re.I) is not None
+
+
+def download(url, docs) -> str:
+    """Download url into assets/external and return the path relative to docs."""
+    u = urllib.parse.urlparse(url if not url.startswith('//') else 'https:' + url)
+    if u.scheme.lower() not in ('http', 'https'):
+        raise ValueError(f'not an http(s) URL: {url}')
+    req = urllib.request.Request(u.geturl(), headers={'User-Agent': USER_AGENT})
+    # (the scheme is checked above)
+    with urllib.request.urlopen(req, timeout=20) as r:  # nosec B310
+        data = r.read()
+        ctype = r.headers.get_content_type()
+    path = urllib.parse.unquote(u.path).lstrip('/')
+    ext = os.path.splitext(path)[1]
+    if u.query or not ext or path.endswith('/'):
+        digest = hashlib.sha1(url.encode(), usedforsecurity=False).hexdigest()[:12]
+        path = os.path.join(os.path.dirname(path), digest + CONTENT_TYPE_EXT.get(ctype, ext or '.bin'))
+    rel = os.path.normpath(os.path.join('assets', 'external', u.hostname, path))
+    out = os.path.join(docs, rel)
+    os.makedirs(os.path.dirname(out), exist_ok=True)
+    with open(out, 'wb') as f:
+        f.write(data)
+    return rel.replace(os.sep, '/')
+
+
+def localize_images(docs) -> None:
+    """Download remote images and rewrite their src; drop them on failure."""
+    cache = {}
+    for file in html_files(docs):
+        text = read(file)
+
+        def repl(m):
+            tag = m.group(0)
+            src = attr(tag, 'src')
+            if src is None or not is_remote(src):
+                return tag
+            if src not in cache:
+                try:
+                    cache[src] = download(src, docs)
+                except Exception as e:  # noqa: BLE001
+                    print(f'generate_docset.py: warning: cannot download {src}: {e}', file=sys.stderr)
+                    cache[src] = None
+            if cache[src] is None:
+                return attr(tag, 'alt') or ''
+            local = os.path.relpath(os.path.join(docs, cache[src]), os.path.dirname(file))
+            local = local.replace(os.sep, '/')
+            return re.sub(ATTR_RE.format('src'), lambda _: f'src="{local}"', tag, count=1, flags=re.I)
+
+        new = IMG_RE.sub(repl, text)
+        if new != text:
+            write(file, new)
+
+
+def load_mkdocs_yml() -> dict:
+    """Load mkdocs.yml, ignoring tags like !ENV and !!python/name."""
+    with open(MKDOCS_YML, encoding='utf-8') as f:
+        # (Loader is a yaml.SafeLoader)
+        return yaml.load(f, Loader=Loader)  # nosec B506
+
+
+def localize_site_urls(docs, site_url) -> None:
+    """Load assets that the theme's JavaScript references by absolute site URL from the docset.
+
+    The privacy plugin rewrites the mermaid loader to "<site_url>assets/external/unpkg.com/mermaid@11/...", so the
+    docset would fetch mermaid from the live site. __md_scope is the site root that Material defines in every page.
+    """
+    pattern = re.compile(r'"' + re.escape(site_url) + r'(assets/[^"]*)"')
+    for base, _, files in os.walk(docs):
+        for file in (f for f in files if f.endswith('.js')):
+            path = os.path.join(base, file)
+            text = read(path)
+            new = pattern.sub(r'new URL("\1",__md_scope).href', text)
+            if new != text:
+                write(path, new)
+
+
+def remote_loads(docs, site_url) -> list:
+    """Return 'file: url' strings for resources that would be loaded remotely."""
+    found = []
+    cdn = re.compile(r'https://(?:unpkg\.com|cdn\.jsdelivr\.net|cdnjs\.cloudflare\.com|'
+                     r'fonts\.googleapis\.com|fonts\.gstatic\.com)/[^\s"\'`)\\]*')
+    css_url = re.compile(r'url\(\s*["\']?((?:https?:)?//[^)"\']+)', re.I)
+    css_import = re.compile(r'@import\s+(?:url\(\s*)?["\']?((?:https?:)?//[^)"\'; ]+)', re.I)
+    for base, _, files in os.walk(docs):
+        for file in files:
+            path = os.path.join(base, file)
+            rel = os.path.relpath(path, docs)
+            urls = []
+            if file.endswith('.html'):
+                text = read(path)
+                for m in re.finditer(r'<[a-zA-Z][^>]*>', text):
+                    tag = m.group(0)
+                    for name in ('src', 'poster'):
+                        v = attr(tag, name)
+                        if v and is_remote(v):
+                            urls.append(v)
+                    v = attr(tag, 'srcset')
+                    if v:
+                        urls += [c.split()[0] for c in v.split(',') if c.strip() and is_remote(c.strip())]
+                    if re.match(r'<link\b', tag, flags=re.I):
+                        rel_attr = (attr(tag, 'rel') or '').lower()
+                        v = attr(tag, 'href')
+                        if v and is_remote(v) and re.search(r'stylesheet|icon|preload|modulepreload|manifest', rel_attr):
+                            urls.append(v)
+                urls += css_url.findall(text) + css_import.findall(text)
+            elif file.endswith('.css'):
+                text = read(path)
+                urls += css_url.findall(text) + css_import.findall(text)
+            elif file.endswith('.js'):
+                text = read(path)
+                urls += cdn.findall(text)
+                urls += re.findall(re.escape(site_url) + r'assets/[^\s"\'`)\\]*', text)
+            found += [f'{rel}: {u}' for u in urls if u not in ALLOWED_REMOTE]
+    return found
+
+
+def make_docset(site, out_dir) -> int:
+    entries = build_entries()
+    if problems:
+        print('\n'.join(problems), file=sys.stderr)
+        return 1
+    docset = os.path.join(out_dir, DOCSET)
+    docs = os.path.join(docset, 'Contents', 'Resources', 'Documents')
+    if os.path.exists(docset):
+        shutil.rmtree(docset)
+    shutil.copytree(site, docs)
+    for icon in ('icon.png', 'icon@2x.png'):
+        shutil.copy(os.path.join(HERE, icon), docset)
+    shutil.copy(os.path.join(HERE, 'Info.plist'), os.path.join(docset, 'Contents'))
+    write_index(entries, os.path.join(docset, 'Contents', 'Resources', 'docSet.dsidx'))
+
+    # patch CSS to hide navigation items and fix spacing
+    css = glob.glob(os.path.join(docs, 'assets', 'stylesheets', 'main.*.min.css'))
+    if len(css) != 1:
+        print(f'generate_docset.py: expected exactly one main.*.min.css, found {len(css)}', file=sys.stderr)
+        return 1
+    with open(css[0], 'a', encoding='utf-8') as f:
+        f.write(CSS_PATCH)
+
+    patch_titles(docs, entries)
+    remove_source_widget(docs)
+    for sitemap in glob.glob(os.path.join(docs, 'sitemap.*')):
+        os.remove(sitemap)
+
+    # make the docset self-contained
+    site_url = load_mkdocs_yml()['site_url']
+    localize_images(docs)
+    localize_site_urls(docs, site_url)
+    remote = remote_loads(docs, site_url)
+    if remote:
+        print('generate_docset.py: remote resources remain in the docset:', file=sys.stderr)
+        print('\n'.join('  ' + r for r in remote), file=sys.stderr)
+        return 1
+    return 0
+
+
+def make_tgz(out_dir) -> int:
+    docset = os.path.join(out_dir, DOCSET)
+    if not os.path.isdir(docset):
+        print(f'generate_docset.py: {docset} does not exist', file=sys.stderr)
+        return 1
+    with tarfile.open(os.path.join(out_dir, 'JSON_for_Modern_C++.tgz'), 'w:gz') as tar:
+        tar.add(docset, arcname=DOCSET, filter=lambda i: None if os.path.basename(i.name) == '.DS_Store' else i)
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    sub = parser.add_subparsers(dest='command', required=True)
+    sub.add_parser('list', help='print the index entries as TSV')
+    p = sub.add_parser('index', help='write the SQLite search index')
+    p.add_argument('out')
+    p = sub.add_parser('docset', help='build the docset from a built mkdocs site')
+    p.add_argument('site_dir')
+    p.add_argument('out_dir')
+    p = sub.add_parser('tgz', help='pack the docset into a tarball')
+    p.add_argument('out_dir')
+    args = parser.parse_args()
+
+    if args.command == 'docset':
+        return make_docset(args.site_dir, args.out_dir)
+    if args.command == 'tgz':
+        return make_tgz(args.out_dir)
+
+    entries = build_entries()
+    if problems:
+        print('\n'.join(problems), file=sys.stderr)
+        return 1
+    if args.command == 'list':
+        for entry in entries:
+            print('\t'.join(entry))
+    elif args.command == 'index':
+        write_index(entries, args.out)
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())

docs/mkdocs/Makefile

@@ -17,6 +17,7 @@ build: style_check
 
 style_check:
 	@cd docs ; ../venv/bin/python3 ../scripts/check_structure.py
+	@venv/bin/python3 ../docset/generate_docset.py list > /dev/null
 
 # check that all Mermaid diagrams parse (needs Node.js)
 # This target is used in the CI (ci_test_documentation_mermaid).

docs/mkdocs/docs/api/basic_json/at.md

@@ -241,4 +241,6 @@ Strong exception safety: if an exception occurs, the original value stays intact
 3. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as
    already supported by [`operator[]`](operator[].md), [`value`](value.md), [`find`](find.md), and other lookup
    functions.
-4. Added in version 2.0.0.
+4. Added in version 2.0.0. Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
+[`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is not
+a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/basic_json/binary_t.md

@@ -64,18 +64,7 @@ values of that type directly to a `basic_json` instance, and they will automatic
 rather than arrays:
 
 ```cpp
-using custom_json = nlohmann::basic_json<
-    nlohmann::ordered_map,  // ObjectType
-    std::vector,            // ArrayType
-    std::string,            // StringType
-    bool,                   // BooleanType
-    std::int64_t,           // NumberIntegerType
-    std::uint64_t,          // NumberUnsignedType
-    double,                 // NumberFloatType
-    std::allocator,         // AllocatorType
-    nlohmann::adl_serializer,
-    std::vector<std::byte>  // Custom BinaryType
->;
+using custom_json = nlohmann::ordered_json::with_binary_t<std::vector<std::byte>>;
 
 std::vector<std::byte> data{std::byte{1}, std::byte{2}, std::byte{3}};
 custom_json j = data;  // Creates a binary value, not an array

docs/mkdocs/docs/api/basic_json/contains.md

@@ -10,6 +10,10 @@ bool contains(KeyType&& key) const;
 
 // (3)
 bool contains(const json_pointer& ptr) const;
+
+// (4)
+template<typename T>
+bool contains(T) const = delete;
 ```
 
 1. Check whether an element exists in a JSON object with a key equivalent to `key`. If the element is not found or the 
@@ -17,6 +21,9 @@ bool contains(const json_pointer& ptr) const;
 2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
    `#!cpp typename object_comparator_t::is_transparent` denotes a type.
 3. Check whether the given JSON pointer `ptr` can be resolved in the current JSON value.
+4. Deleted: this overload is only available if `T` is an integral type and is declared as deleted, so that a call with
+   an integer `key` (for example, `#!cpp j.contains(0)`) fails to compile. Otherwise, the integer literal `0` would convert to
+   a null `#!cpp const char*` and, from there, to the key type, causing undefined behavior at runtime.
 
 ## Template parameters
 
@@ -39,6 +46,7 @@ bool contains(const json_pointer& ptr) const;
    is not an object, `#!cpp false` is returned.
 2. See 1.
 3. `#!cpp true` if the JSON pointer can be resolved to a stored value, `#!cpp false` otherwise.
+4. Deleted; a call with an integral argument does not compile.
 
 ## Exception safety
 
@@ -49,6 +57,7 @@ Strong exception safety: if an exception occurs, the original value stays intact
 1. The function does not throw exceptions.
 2. The function does not throw exceptions.
 3. The function does not throw exceptions.
+4. Deleted; a call with an integral argument does not compile.
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json/count.md

@@ -7,12 +7,19 @@ size_type count(const typename object_t::key_type& key) const;
 // (2)
 template<typename KeyType>
 size_type count(KeyType&& key) const;
+
+// (3)
+template<typename T>
+size_type count(T) const = delete;
 ```
 
 1. Returns the number of elements with key `key`. If `ObjectType` is the default `std::map` type, the return value will
    always be `0` (`key` was not found) or `1` (`key` was found).
 2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
    `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+3. Deleted: this overload is only available if `T` is an integral type and is declared as deleted, so that a call with
+   an integer `key` (for example, `#!cpp j.count(0)`) fails to compile. Otherwise, the integer literal `0` would convert to
+   a null `#!cpp const char*` and, from there, to the key type, causing undefined behavior at runtime.
 
 ## Template parameters
 

docs/mkdocs/docs/api/basic_json/dump.md

@@ -62,6 +62,9 @@ Linear.
 
 ## Notes
 
+Floating-point numbers are written with the fewest digits that read back as the same value (for `#!cpp double`; see
+[number handling](../../features/types/number_handling.md#number-serialization)).
+
 Binary values are serialized as an object containing two keys:
 
 - "bytes": an array of bytes as integers
@@ -97,3 +100,5 @@ Binary values are serialized as an object containing two keys:
 - Error handlers added in version 3.4.0.
 - Serialization of binary values added in version 3.8.0.
 - Error handler `keep` added in version 3.13.0.
+- Doubles are written with the shortest digits (Żmij instead of Grisu2) since version 3.13.0; about 0.1% of doubles are
+  written differently, most of them with fewer digits.

docs/mkdocs/docs/api/basic_json/error_handler_t.md

@@ -37,8 +37,8 @@ ignore
 :   ignore invalid UTF-8 sequences; all valid bytes are copied to the output unchanged, and invalid bytes are dropped
 
 keep
-:   keep invalid UTF-8 sequences unchanged; only meaningful for the binary formats mentioned above, since [`dump`]
-    (dump.md) itself must produce text, and `keep` there writes the ill-formed bytes to the output as is, so the
+:   keep invalid UTF-8 sequences unchanged; only meaningful for the binary formats mentioned above, since
+    [`dump`](dump.md) itself must produce text, and `keep` there writes the ill-formed bytes to the output as is, so the
     result is then not valid UTF-8 (but still equals the input bytes exactly, including around any well-formed
     characters, which are still escaped as usual)
 

docs/mkdocs/docs/api/basic_json/find.md

@@ -10,12 +10,21 @@ template<typename KeyType>
 iterator find(KeyType&& key);
 template<typename KeyType>
 const_iterator find(KeyType&& key) const;
+
+// (3)
+template<typename T>
+iterator find(T) = delete;
+template<typename T>
+const_iterator find(T) const = delete;
 ```
 
 1. Finds an element in a JSON object with a key equivalent to `key`. If the element is not found or the
    JSON value is not an object, `end()` is returned.
 2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
    `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+3. Deleted: this overload is only available if `T` is an integral type and is declared as deleted, so that a call with
+   an integer `key` (for example, `#!cpp j.find(0)`) fails to compile. Otherwise, the integer literal `0` would convert to
+   a null `#!cpp const char*` and, from there, to the key type, causing undefined behavior at runtime.
 
 ## Template parameters
 

docs/mkdocs/docs/api/basic_json/from_bjdata.md

@@ -124,7 +124,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_bjdata` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.13.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.13.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_bjdata(ptr, len, ...);` with `#!cpp from_bjdata(ptr, ptr+len, ...);`.
 
     You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated

docs/mkdocs/docs/api/basic_json/from_bon8.md

@@ -110,7 +110,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_bon8` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.13.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.13.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_bon8(ptr, len, ...);` with `#!cpp from_bon8(ptr, ptr+len, ...);`.
 
     You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated

docs/mkdocs/docs/api/basic_json/from_bson.md

@@ -126,7 +126,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_bson` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.8.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_bson(ptr, len, ...);` with `#!cpp from_bson(ptr, ptr+len, ...);`.
     - Overload (2) replaces calls to `from_bson` with a pair of iterators as their first parameter, which has been
       deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like

docs/mkdocs/docs/api/basic_json/from_cbor.md

@@ -135,7 +135,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_cbor` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.8.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_cbor(ptr, len, ...);` with `#!cpp from_cbor(ptr, ptr+len, ...);`.
     - Overload (2) replaces calls to `from_cbor` with a pair of iterators as their first parameter, which has been
       deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like

docs/mkdocs/docs/api/basic_json/from_msgpack.md

@@ -127,7 +127,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_msgpack` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.8.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_msgpack(ptr, len, ...);` with `#!cpp from_msgpack(ptr, ptr+len, ...);`.
     - Overload (2) replaces calls to `from_msgpack` with a pair of iterators as their first parameter, which has been
       deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like

docs/mkdocs/docs/api/basic_json/from_ubjson.md

@@ -125,7 +125,8 @@ Linear in the size of the input.
 !!! warning "Deprecation"
 
     - Overload (2) replaces calls to `from_ubjson` with a pointer and a length as first two parameters, which has been
-      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      deprecated in version 3.8.0. In version 4.0.0, this overload
+      will be deleted (`= delete`) rather than removed. Please replace all calls like
       `#!cpp from_ubjson(ptr, len, ...);` with `#!cpp from_ubjson(ptr, ptr+len, ...);`.
     - Overload (2) replaces calls to `from_ubjson` with a pair of iterators as their first parameter, which has been
       deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like

docs/mkdocs/docs/api/basic_json/json_base_class_t.md

@@ -62,5 +62,5 @@ same name. Hidden members remain accessible via [`as_base_class`](as_base_class.
 
 ## Version history
 
-- Added in version 3.12.0.
+- Added in version 3.11.3.
 - Made a public member type in version 3.13.0; it was private before, so it could not be named outside the class.

docs/mkdocs/docs/api/basic_json/number_float_t.md

@@ -23,9 +23,10 @@ type to use.
 ## Template parameters
 
 `NumberFloatType`
-:   the type to store floating-point numbers. Parsing and serialization are implemented in terms of
-    `#!cpp std::strtof`/`#!cpp std::strtod`/`#!cpp std::strtold` and `#!cpp std::snprintf`, so the type must be
-    `#!cpp float`, `#!cpp double`, or `#!cpp long double`. The
+:   the type to store floating-point numbers. The type must be `#!cpp float`, `#!cpp double`, or
+    `#!cpp long double`. The parser converts `#!cpp float`, `#!cpp double`, and a `#!cpp long double` that is IEEE 754
+    binary64 itself. It converts other `#!cpp long double` formats with `#!cpp std::from_chars` where available, or
+    with `#!cpp std::strtold` otherwise. Serialization falls back to `#!cpp std::snprintf`. The
     [binary formats](../../features/binary_formats/index.md) additionally require `#!cpp float` or `#!cpp double`,
     because they have no encoding for `#!cpp long double`. See
     [Template Parameter Requirements](../../features/types/template_parameters.md#numberfloattype).

docs/mkdocs/docs/api/basic_json/operator[].md

@@ -286,4 +286,6 @@ Strong exception safety: if an exception occurs, the original value stays intact
 3. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as
    already supported by [`at`](at.md), [`value`](value.md), [`find`](find.md), and other lookup functions.
 4. Added in version 2.0.0. A missing array index in the const version is guarded by a runtime assertion since
-   version 3.13.0.
+   version 3.13.0. Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
+[`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is not
+a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/basic_json/patch.md

@@ -112,3 +112,6 @@ is thrown. In any case, the original value is not changed: the patch is applied
   location has a non-object/non-array parent in version 3.13.0.
 - Added [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) and rejected a "move" operation whose "from" location is a proper
   prefix of its "path" location instead of silently producing a corrupted result in version 3.13.0.
+- Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
+  [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is
+  not a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/basic_json/patch_inplace.md

@@ -110,3 +110,6 @@ function throws an exception.
   location has a non-object/non-array parent in version 3.13.0.
 - Added [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) and rejected a "move" operation whose "from" location is a proper
   prefix of its "path" location instead of silently producing a corrupted result in version 3.13.0.
+- Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
+  [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is
+  not a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/basic_json/to_bon8.md

@@ -41,6 +41,8 @@ With (2), the bytes written before the exception remain in the output adapter.
   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
+  discarded; example: `"cannot serialize discarded value to BON8"`
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json/unflatten.md

@@ -36,8 +36,9 @@ The function can throw the following exceptions:
 - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in a key is not a
   number; example: `"array index 'one' is not a number"`
 - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if a level becomes an array
-  (because one of its keys is `0`) and another key at that level cannot be an array index; example:
-  `"unresolved reference token 'x'"`
+  (because one of its keys is `0`) and another key at that level begins with a digit but is not a valid array index
+  (such as `1a`), or is `-`; example:
+  `"unresolved reference token '-'"`
 
 ## Complexity
 
@@ -80,3 +81,6 @@ Apart from these two cases, for a JSON value `j`, the following is always true:
 
 - Added in version 2.0.0.
 - Made the array/object decision independent of the object's iteration order in version 3.13.0.
+- Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
+  [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is
+  not a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/basic_json/value.md

@@ -119,6 +119,14 @@ changes to any JSON value.
 
 ## Notes
 
+!!! warning "`null` members are not missing"
+
+    The default value is used only if the key (or JSON Pointer) does not exist. A member that exists but is
+    `#!json null` is converted like any other value, so `#!cpp j.value("k", 0)` throws a
+    [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `"k"` is `#!json null`. See
+    [Access with default value](../../features/element_access/default_value.md)
+    for alternatives.
+
 !!! warning "Return type"
 
     The value function is a template, and the return type of the function is determined by the type of the provided
@@ -227,4 +235,6 @@ changes to any JSON value.
    [`operator[]`](operator[].md), [`at`](at.md), [`find`](find.md), and other lookup functions.
 3. Added in version 2.0.2. Extended to work with arrays in version 3.13.0, including fixing an issue where resolving
    `ptr` through an array unexpectedly threw `out_of_range` instead of returning the resolved element (or
-   `default_value`, as documented).
+   `default_value`, as documented). Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109)
+   instead of returning `default_value` for a one-character array index that is not a digit (e.g., `/x`) in version
+   3.13.0, as it already did for longer ones.

docs/mkdocs/docs/api/macros/index.md

@@ -27,6 +27,7 @@ header. See also the [macro overview page](../../features/macros.md).
 
 - [**JSON_HAS_CPP_11**<br>**JSON_HAS_CPP_14**<br>**JSON_HAS_CPP_17**<br>**JSON_HAS_CPP_20**](json_has_cpp_11.md) - set supported C++ standard
 - [**JSON_HAS_FILESYSTEM**<br>**JSON_HAS_EXPERIMENTAL_FILESYSTEM**](json_has_filesystem.md) - control `std::filesystem` support
+- [**JSON_HAS_RANGE_VIEW_CONVERSION**](json_has_range_view_conversion.md) - control construction from `std::ranges` views
 - [**JSON_HAS_RANGES**](json_has_ranges.md) - control `std::ranges` support
 - [**JSON_HAS_STATIC_RTTI**](json_has_static_rtti.md) - control RTTI (run time type information) support
 - [**JSON_HAS_STD_FORMAT**](json_has_std_format.md) - control `std::format`/`std::formatter` support

docs/mkdocs/docs/api/macros/json_has_cpp_11.md

@@ -49,6 +49,6 @@ The default value is detected based on preprocessor macros such as `#!cpp __cplu
 
 ## Version history
 
-- Added in version 3.10.5.
+- Added in version 3.10.0.
 - Added `JSON_HAS_CPP_23` in version 3.12.0.
 - Added `JSON_HAS_CPP_26` in version 3.13.0.

docs/mkdocs/docs/api/macros/json_has_range_view_conversion.md

@@ -0,0 +1,43 @@
+# JSON_HAS_RANGE_VIEW_CONVERSION
+
+```cpp
+#define JSON_HAS_RANGE_VIEW_CONVERSION /* value */
+```
+
+This macro indicates whether a JSON array can be constructed directly from a C++20 range view (`std::ranges::view`),
+such as the result of `std::views::filter` or `std::views::transform`. Possible values are `1` when supported or `0`
+when unsupported.
+
+## Default definition
+
+The default value is `1` if [`JSON_HAS_RANGES`](json_has_ranges.md) is `1` and the compiler is not MinGW (that is,
+`#!cpp __MINGW32__` is not defined), and `0` otherwise.
+
+When the macro is not defined, the library will define it to its default value.
+
+!!! info "Known compiler/stdlib exclusions"
+
+    - **MinGW** -- disabled, because its `std::ranges` support is incomplete ([issue #4916](https://github.com/nlohmann/json/issues/4916)).
+    - All toolchains for which [`JSON_HAS_RANGES`](json_has_ranges.md#default-definition) is disabled.
+
+## Examples
+
+??? example
+
+    The code below forces the library to disable the conversion from range views:
+
+    ```cpp
+    #define JSON_HAS_RANGE_VIEW_CONVERSION 0
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## See also
+
+- [JSON_HAS_RANGES](json_has_ranges.md) - control `std::ranges` support
+- [Constructing from a C++20 range view](../../features/conversions.md#putting-values-in) - usage of the feature
+
+## Version history
+
+- Added in version 3.13.0.

docs/mkdocs/docs/api/macros/json_has_ranges.md

@@ -20,7 +20,7 @@ When the macro is not defined, the library will define it to its default value.
     
     - **GCC 11.1.0** — disabled (the shipped `<ranges>` header has a syntax error; [issue #4440](https://github.com/nlohmann/json/issues/4440))
     - **libstdc++ < 11** — disabled (incomplete C++20 ranges support; [issue #4440](https://github.com/nlohmann/json/issues/4440))
-    - **Clang < 16 with libstdc++** — disabled (incomplete ranges support; [issue #4440](https://github.com/nlohmann/json/issues/4440))
+    - **Clang < 16 with libstdc++** — disabled (incomplete ranges support; [issue #5161](https://github.com/nlohmann/json/issues/5161))
     - **libc++ < 160000** — disabled (incomplete C++20 ranges support; [issue #4440](https://github.com/nlohmann/json/issues/4440))
     - **nvcc (CUDA) 12.0.x and 12.1.x** — disabled (the `enable_borrowed_range` variable-template syntax triggers a parse error
       under these two toolkit versions; fixed in CUDA 12.2; [issue #3907](https://github.com/nlohmann/json/issues/3907))
@@ -44,9 +44,12 @@ When the macro is not defined, the library will define it to its default value.
 
 - [JSON_HAS_CPP_11 / JSON_HAS_CPP_14 / JSON_HAS_CPP_17 / JSON_HAS_CPP_20 / JSON_HAS_CPP_23 /
   JSON_HAS_CPP_26](json_has_cpp_11.md) - set supported C++ standard
+- [JSON_HAS_RANGE_VIEW_CONVERSION](json_has_range_view_conversion.md) - control construction from `std::ranges` views
 - [JSON_HAS_STD_FORMAT](json_has_std_format.md) - a similar feature-detection macro, for `std::format`/`std::formatter`
   support
 
 ## Version history
 
 - Added in version 3.11.0.
+- Added the exclusions for libstdc++ < 11, Clang < 16 with libstdc++, libc++ < 16, and nvcc (CUDA) 12.0.x and 12.1.x in
+  version 3.13.0. Before, only GCC 11.1.0 was excluded.

docs/mkdocs/docs/api/macros/json_strict_binary_utf8.md

@@ -20,7 +20,10 @@ The macro does not affect:
 - The binary readers ([`from_cbor`](../basic_json/from_cbor.md), [`from_msgpack`](../basic_json/from_msgpack.md),
   [`from_ubjson`](../basic_json/from_ubjson.md), [`from_bjdata`](../basic_json/from_bjdata.md),
   [`from_bson`](../basic_json/from_bson.md)): none of these formats requires a decoder to reject ill-formed UTF-8, so
-  they always return the bytes unchanged.
+  by default they return the bytes unchanged (`error_handler_t::keep`), independent of this macro. Pass an
+  `error_handler` argument explicitly to validate or sanitize the strings they read.
+- [`from_bon8`](../basic_json/from_bon8.md): BON8 always validates, because the UTF-8 lead bytes mark where a string
+  ends.
 
 ## Default definition
 

docs/mkdocs/docs/api/macros/json_use_implicit_conversions.md

@@ -67,7 +67,7 @@ By default, implicit conversions are enabled.
     `JSON_USE_IMPLICIT_CONVERSIONS` is defined to `0`:
 
     ```cpp
-    using wjson = nlohmann::basic_json<std::map, std::vector, std::wstring>;
+    using wjson = nlohmann::json::with_string_t<std::wstring>;
 
     void load(const nlohmann::json& j);
 

docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md

@@ -190,3 +190,5 @@ void to_json(BasicJsonType& j, const B& b) {
 4. Added in version 3.12.0.
 5. Added in version 3.12.0.
 6. Added in version 3.12.0.
+
+All six macros were changed to allow an empty member list in version 3.13.0.

docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md

@@ -186,3 +186,6 @@ See the examples below for the concrete generated code.
 1. Added in version 3.9.0.
 2. Added in version 3.11.0.
 3. Added in version 3.11.3.
+
+All three macros were changed to work with any `basic_json` specialization (not only `nlohmann::json`) in version 3.12.0,
+and to allow an empty member list in version 3.13.0.

docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md

@@ -185,3 +185,6 @@ See the examples below for the concrete generated code.
 1. Added in version 3.9.0.
 2. Added in version 3.11.0.
 3. Added in version 3.11.3.
+
+All three macros were changed to work with any `basic_json` specialization (not only `nlohmann::json`) in version 3.12.0,
+and to allow an empty member list in version 3.13.0.

docs/mkdocs/docs/api/macros/nlohmann_json_namespace.md

@@ -38,4 +38,6 @@ the library.
 
 ## Version history
 
-- Added in version 3.11.0. Changed inline namespace name in version 3.11.2.
+- 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`, and `_ekmo` in version 3.13.0; see
+  [`nlohmann` Namespace](../../features/namespace.md#structure).

docs/mkdocs/docs/api/macros/nlohmann_json_namespace_begin.md

@@ -14,7 +14,7 @@ These macros can be used to open and close the `nlohmann` namespace. See
 ## Default definition
 
 The default definitions open and close the `nlohmann` namespace. The precise definition of
-[`NLOHMANN_JSON_NAMESPACE_BEGIN`] varies as described [here](../../features/namespace.md#structure).
+`NLOHMANN_JSON_NAMESPACE_BEGIN` varies as described [here](../../features/namespace.md#structure).
 
 1. Default definition of `NLOHMANN_JSON_NAMESPACE_BEGIN`:
 

docs/mkdocs/docs/community/assurance_case.md

@@ -10,7 +10,7 @@ The library parses, stores, and serializes JSON values in memory. It does not op
 files (it only reads from streams or `std::FILE*` handles that the caller has already opened), does not read environment
 variables, and does not implement cryptography or handle credentials.
 
-The primary threat is therefore **untrusted input**: JSON text or binary data (BJData, BSON, CBOR, MessagePack, UBJSON)
+The primary threat is therefore **untrusted input**: JSON text or binary data (BJData, BON8, BSON, CBOR, MessagePack, UBJSON)
 that an attacker controls, passed to [`parse`](../api/basic_json/parse.md), [`accept`](../api/basic_json/accept.md),
 [`sax_parse`](../api/basic_json/sax_parse.md), or one of the `from_*` functions such as
 [`from_cbor`](../api/basic_json/from_cbor.md). Such input may try to

docs/mkdocs/docs/community/quality_assurance.md

@@ -12,7 +12,7 @@ violations will result in a failed build.
 
 Note: C++20 modules support may hit compiler-specific issues not covered by the general compiler matrix below. See [Modules](../features/modules.md#known-issues) for known issues and workarounds.
 
-Note: Some modern features (like C++20 ranges or filesystem support) may be disabled on specific broken or incomplete toolchains even when standard feature-test macros indicate support. See [`JSON_HAS_RANGES`](../api/macros/json_has_ranges.md) and [`JSON_HAS_FILESYSTEM`](../api/macros/json_has_filesystem.md) for details on known exclusions.
+Note: Some modern features (like C++20 ranges or filesystem support) may be disabled on specific broken or incomplete toolchains even when standard feature-test macros indicate support. See [`JSON_HAS_RANGES`](../api/macros/json_has_ranges.md), [`JSON_HAS_RANGE_VIEW_CONVERSION`](../api/macros/json_has_range_view_conversion.md), and [`JSON_HAS_FILESYSTEM`](../api/macros/json_has_filesystem.md) for details on known exclusions.
 
 - [x] The library is compiled with 50+ different C++ compilers with different operating systems and platforms,
   including the oldest versions known to compile the library.
@@ -107,7 +107,7 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
 - [x] The library is compiled with all C++ language revisions (C++11, C++14, C++17, C++20, C++23, and C++26) to detect
   and fix language deprecations early.
 - [x] The library is checked for compiler warnings:
-  - On Clang, `-Weverything` is used with 8 exceptions.
+  - On Clang, `-Weverything` is used with 7 exceptions.
 
     ??? abstract "Clang warnings"
 

docs/mkdocs/docs/community/roadmap.md

@@ -36,13 +36,26 @@ work items are tracked in the [GitHub milestones](https://github.com/nlohmann/js
 ## API stability
 
 Releases follow [semantic versioning](https://semver.org): a minor or patch release of version 3.x does not break code
-that uses the public API. In particular, a 3.x release does not:
+that uses the public API, unless that code opts in to a change with a macro as described [below](#version-40). In
+particular, a 3.x release does not:
 
-- change the signature of a function (its parameter types, return type, number of parameters, or the const-ness of a
-  member function);
-- remove or rename a function or class;
+- make breaking changes to the signature of a function: the types or order of its existing parameters, its return type,
+  its `noexcept` or `constexpr` specifier, or the const-ness of a member function. New parameters may be added if they
+  have a default value;
+- remove or rename a function or class, or change the template parameters of a public class template;
 - change which exceptions a function throws, or the [exception ids](../home/exceptions.md);
-- change access specifiers or default arguments.
+- change access specifiers, or change or remove existing default arguments. New default arguments may be added;
+- change the JSON type that a valid input parses to, or the text that `dump()` produces for a valid value;
+- accept input that was rejected before, or reject input that was accepted before;
+- change the order in which the keys of an object are iterated. The default type sorts keys, and
+  [`ordered_json`](../api/ordered_json.md) keeps insertion order;
+- change when iterators, pointers, or references are invalidated, or the state of a moved-from `basic_json`;
+- add or remove implicit conversions from `basic_json`;
+- change how `to_json` and `from_json` functions are found, or the behavior of
+  [`adl_serializer`](../api/adl_serializer/index.md);
+- add pure virtual functions to the [`json_sax`](../api/json_sax/index.md) interface;
+- remove, rename, renumber, or add enumerators of `value_t`;
+- remove or rename a documented macro, CMake option, CMake target, or header, or change what a documented macro does.
 
 Exceptions to these rules, for instance when fixing a bug requires changing the exception a function throws, are
 documented in the [release notes](../home/releases.md).
@@ -51,13 +64,14 @@ The following are **not** part of the public API and may change in any release,
 
 - The text of exception messages returned by `what()`. Use the [exception id](../home/exceptions.md) to tell errors
   apart.
-- The ABI, including `sizeof(basic_json)` and the memory layout of its values. Recompile your code when you upgrade the
-  library. The [versioned inline namespace](../features/namespace.md) turns mixing versions into a link error.
+- The ABI, including `sizeof(basic_json)` and the memory layout of its values. The
+  [versioned inline namespace](../features/namespace.md) turns mixing versions into a link error.
+- The hash values returned by `std::hash` for `basic_json`. Numbers that compare equal still hash equally.
 - Everything in namespace `nlohmann::detail`, and macros and type traits that are not documented in the
   [API reference](../api/basic_json/index.md).
 
-Changes that would break the public API are only added behind a macro whose default keeps the 3.x behavior, see
-[Version 4.0](#version-40).
+Breaking changes are only added behind a macro whose default keeps the 3.x behavior. See [Version 4.0](#version-40) and
+the [macro overview](../features/macros.md).
 
 ## Version 4.0
 

docs/mkdocs/docs/examples/as_base_class.cpp

@@ -15,19 +15,7 @@ class base_class_with_hidden_members
     }
 };
 
-using json = nlohmann::basic_json <
-             std::map,
-             std::vector,
-             std::string,
-             bool,
-             std::int64_t,
-             std::uint64_t,
-             double,
-             std::allocator,
-             nlohmann::adl_serializer,
-             std::vector<std::uint8_t>,
-             base_class_with_hidden_members
-             >;
+using json = nlohmann::json::with_base_class_t<base_class_with_hidden_members>;
 
 int main()
 {

docs/mkdocs/docs/examples/contains__json_pointer.cpp

@@ -19,25 +19,9 @@ int main()
               << j.contains("/array/1"_json_pointer) << '\n'
               << j.contains("/array/-"_json_pointer) << '\n'
               << j.contains("/array/4"_json_pointer) << '\n'
-              << j.contains("/baz"_json_pointer) << std::endl;
-
-    try
-    {
-        // try to use an array index with leading '0'
-        j.contains("/array/01"_json_pointer);
-    }
-    catch (const json::parse_error& e)
-    {
-        std::cout << e.what() << '\n';
-    }
-
-    try
-    {
-        // try to use an array index that is not a number
-        j.contains("/array/one"_json_pointer);
-    }
-    catch (const json::parse_error& e)
-    {
-        std::cout << e.what() << '\n';
-    }
+              << j.contains("/baz"_json_pointer) << '\n'
+              // an array index with a leading '0' is not found
+              << j.contains("/array/01"_json_pointer) << '\n'
+              // an array index that is not a number is not found
+              << j.contains("/array/one"_json_pointer) << std::endl;
 }

docs/mkdocs/docs/examples/contains__json_pointer.output

@@ -5,3 +5,5 @@ true
 false
 false
 false
+false
+false

docs/mkdocs/docs/examples/custom_array_type.cpp

@@ -1,11 +1,10 @@
 #include <iostream>
-#include <map>
 
 #include <nlohmann/json.hpp>
 
 #include "custom_array_type.hpp"
 
-using custom_json = nlohmann::basic_json<std::map, custom_array_type>;
+using custom_json = nlohmann::json::with_array_t<custom_array_type>;
 
 int main()
 {

docs/mkdocs/docs/examples/custom_binary_type.cpp

@@ -1,16 +1,10 @@
-#include <cstdint>
 #include <iostream>
-#include <map>
-#include <string>
-#include <vector>
 
 #include <nlohmann/json.hpp>
 
 #include "custom_binary_type.hpp"
 
-using custom_json = nlohmann::basic_json<std::map, std::vector, std::string, bool,
-      std::int64_t, std::uint64_t, double, std::allocator,
-      nlohmann::adl_serializer, custom_binary_type>;
+using custom_json = nlohmann::json::with_binary_t<custom_binary_type>;
 
 int main()
 {

docs/mkdocs/docs/examples/custom_object_type.cpp

@@ -1,12 +1,11 @@
 #include <iostream>
 #include <type_traits>
-#include <vector>
 
 #include <nlohmann/json.hpp>
 
 #include "custom_object_type.hpp"
 
-using custom_json = nlohmann::basic_json<custom_object_type, std::vector>;
+using custom_json = nlohmann::json::with_object_t<custom_object_type>;
 
 int main()
 {

docs/mkdocs/docs/examples/custom_string_type.cpp

@@ -1,12 +1,10 @@
 #include <iostream>
-#include <map>
-#include <vector>
 
 #include <nlohmann/json.hpp>
 
 #include "custom_string_type.hpp"
 
-using custom_json = nlohmann::basic_json<std::map, std::vector, custom_string_type>;
+using custom_json = nlohmann::json::with_string_t<custom_string_type>;
 
 int main()
 {

docs/mkdocs/docs/examples/parse_error.cpp

@@ -8,7 +8,7 @@ int main()
     try
     {
         // parsing input with a syntax error
-        json::parse("[1,2,3,]");
+        json j = json::parse("[1,2,3,]");
     }
     catch (const json::parse_error& e)
     {

docs/mkdocs/docs/features/arbitrary_types.md

@@ -347,6 +347,13 @@ struct adl_serializer<boost::optional<T>> {
 NLOHMANN_JSON_NAMESPACE_END
 ```
 
+!!! tip "`std::optional` needs no serializer"
+
+    Since version 3.12.0, `std::optional<T>` is supported out of the box when compiling with C++17
+    (`std::nullopt` is converted to and from `null`). Do not write an `adl_serializer` for it; this pattern is only
+    needed for types such as `boost::optional` or for custom semantics. See [Conversions](conversions.md) and
+    [Omitting a field when serializing `std::optional`](conversions.md#omitting-a-field-when-serializing-stdoptional).
+
 !!! note "ABI compatibility"
 
     Use [`NLOHMANN_JSON_NAMESPACE_BEGIN`](../api/macros/nlohmann_json_namespace_begin.md) and `NLOHMANN_JSON_NAMESPACE_END`

docs/mkdocs/docs/features/conversions.md

@@ -217,7 +217,8 @@ json j = numbers;   // [1,2,3]
     ```
 
     This requires [`JSON_HAS_RANGES`](../api/macros/json_has_ranges.md) to be enabled and is unavailable on MinGW due
-    to incomplete C++20 ranges support there.
+    to incomplete C++20 ranges support there; see
+    [`JSON_HAS_RANGE_VIEW_CONVERSION`](../api/macros/json_has_range_view_conversion.md).
 
 ## Your own types
 

docs/mkdocs/docs/features/element_access/default_value.md

@@ -30,6 +30,47 @@ you want to access and a default value in case there is no value stored with tha
     | `#!cpp j.value("append", false)`            | `#!json true`                                        |
     | `#!cpp j.value("logLevel", "verbose")`      | `#!json "verbose"`                                   |
 
+## Nested values
+
+To read a value deep inside a document, pass a [JSON Pointer](../json_pointer.md) instead of a key. The default value is
+returned if the value at the pointer does not exist, including the case that an intermediate key is missing. There is
+no need to check each level with [`contains`](../../api/basic_json/contains.md) first.
+
+```cpp
+json j = {{"server", {{"port", 8080}}}, {"list", {10, 20}}};
+
+int port = j.value("/server/port"_json_pointer, 80);        // 8080
+int timeout = j.value("/server/limits/timeout"_json_pointer, 30); // 30 (missing intermediate key)
+int second = j.value("/list/1"_json_pointer, 0);            // 20 (numeric tokens index arrays)
+int third = j.value("/list/5"_json_pointer, 0);             // 0 (index out of range)
+
+bool has_port = j.contains("/server/port"_json_pointer);    // true
+bool has_host = j.contains("/server/host/name"_json_pointer); // false
+```
+
+If the path is only available as a dotted string such as `#!cpp "server.port"`, do not build the pointer by
+concatenating `#!cpp "/"` and the parts: keys containing `/` or `~` would be misinterpreted. Append each part as a
+reference token with [`operator/=`](../../api/json_pointer/operator_slasheq.md) instead. It escapes the token for you.
+
+```cpp
+json::json_pointer to_pointer(const std::string& dotted)
+{
+    json::json_pointer ptr;
+    std::istringstream in(dotted);
+    for (std::string token; std::getline(in, token, '.');)
+    {
+        ptr /= token;
+    }
+    return ptr;
+}
+
+int port = j.value(to_pointer("server.port"), 80);          // 8080
+int first = j.value(to_pointer("list.0"), 0);               // 10
+```
+
+The key `#!cpp "a/b"` yields the pointer `#!cpp "/a~1b"`; the dot-splitting itself is up to the caller, so keys
+containing `.` need a different separator.
+
 ## Notes
 
 !!! failure "Exceptions"
@@ -37,6 +78,31 @@ you want to access and a default value in case there is no value stored with tha
     - With string keys, `value` can only be used with objects. For other types, a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error306) is thrown.
     - With JSON Pointers, `value` can be used with both objects and arrays. For other types (null, boolean, number, string), a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error306) is thrown.
 
+!!! warning "`null` and mistyped members are not missing"
+
+    `value` returns the default value only if the key is **absent**. If the member exists, it is converted to the type
+    of the default value, even if it is `#!json null`. For `#!json {"k": null}`, the call `#!cpp j.value("k", 0)` throws
+    a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error302), and so does a member of another
+    type such as a string where a number is expected. The same holds for JSON Pointers.
+
+    To treat `#!json null` like a missing value, check for it explicitly:
+
+    ```cpp
+    int n = (j.contains("k") && !j["k"].is_null()) ? j["k"].get<int>() : 0;
+    ```
+
+    With C++17, [`get<std::optional<T>>()`](../../api/basic_json/get.md) maps `#!json null` to an empty optional. As
+    [`at`](../../api/basic_json/at.md) throws [`out_of_range`](../../home/exceptions.md#jsonexceptionout_of_range403)
+    for an absent key, use [`find`](../../api/basic_json/find.md) to cover both cases:
+
+    ```cpp
+    std::optional<int> n;                        // empty if "k" is absent or null
+    if (const auto it = j.find("k"); it != j.end())
+    {
+        n = it->get<std::optional<int>>();       // still throws for a non-number such as "text"
+    }
+    ```
+
 !!! warning "Return type"
 
     The value function is a template, and the return type of the function is determined by the type of the provided
@@ -63,3 +129,6 @@ you want to access and a default value in case there is no value stored with tha
 
 - [`value`](../../api/basic_json/value.md) for access with default value
 - documentation on [checked access](checked_access.md)
+- documentation on [JSON Pointer](../json_pointer.md)
+- [`contains`](../../api/basic_json/contains.md) to check whether a key or JSON Pointer exists
+- [`json_pointer::operator/=`](../../api/json_pointer/operator_slasheq.md) to build a pointer token by token

docs/mkdocs/docs/features/json_pointer.md

@@ -77,6 +77,10 @@ auto val2 = j.at(json::json_pointer("/nested/three/1"));    // false
 auto val3 = j.value(json::json_pointer("/nested/four"), 0); // 0
 ```
 
+To read a value with a fallback, use [`value`](../api/basic_json/value.md) with a JSON Pointer; to test for existence,
+use [`contains`](../api/basic_json/contains.md). Neither needs intermediate checks, see
+[Nested values](element_access/default_value.md#nested-values).
+
 !!! note "Creating intermediate levels that don't exist"
 
     See the [`operator[]` notes](../api/basic_json/operator%5B%5D.md#return-value) for how array vs. object is
@@ -126,6 +130,8 @@ auto j_original = j_flat.unflatten();
 ## See also
 
 - Class [`json_pointer`](../api/json_pointer/index.md)
+- Functions [`value`](../api/basic_json/value.md), [`contains`](../api/basic_json/contains.md), and
+  [`at`](../api/basic_json/at.md) accept JSON Pointers; see [Nested values](element_access/default_value.md#nested-values)
 - Function [`flatten`](../api/basic_json/flatten.md)
 - Function [`unflatten`](../api/basic_json/unflatten.md)
 - [JSON Patch](json_patch.md) - paths inside a patch are JSON Pointers

docs/mkdocs/docs/features/macros.md

@@ -82,6 +82,45 @@ To override the built-in check, define `JSON_HAS_FILESYSTEM` or `JSON_HAS_EXPERI
 
 See [full documentation of `JSON_HAS_FILESYSTEM` and `JSON_HAS_EXPERIMENTAL_FILESYSTEM`](../api/macros/json_has_filesystem.md).
 
+## `JSON_HAS_RANGES`
+
+The library uses `std::ranges` (and concepts) where available, for example, to parse from C++20 ranges and to
+construct JSON arrays from range views. The library detects whether the standard library supports ranges and
+disables the support on toolchains with an incomplete implementation. To override the built-in check, define
+`JSON_HAS_RANGES` to `1` or `0`.
+
+See [full documentation of `JSON_HAS_RANGES`](../api/macros/json_has_ranges.md).
+
+## `JSON_HAS_RANGE_VIEW_CONVERSION`
+
+When `JSON_HAS_RANGES` is enabled (and the compiler is not MinGW), a JSON array can be constructed directly from a C++20
+range view such as `std::views::filter(...)`. To override the built-in check, define `JSON_HAS_RANGE_VIEW_CONVERSION` to
+`1` or `0`.
+
+See [full documentation of `JSON_HAS_RANGE_VIEW_CONVERSION`](../api/macros/json_has_range_view_conversion.md).
+
+## `JSON_HAS_STATIC_RTTI`
+
+The library detects whether the compiler supports run time type information (RTTI), which it needs, for instance, to
+exclude `std::any` from the candidate types of the implicit conversion on C++17. To override the built-in check, define
+`JSON_HAS_STATIC_RTTI` to `1` or `0`.
+
+See [full documentation of `JSON_HAS_STATIC_RTTI`](../api/macros/json_has_static_rtti.md).
+
+## `JSON_HAS_STD_FORMAT`
+
+When compiling with C++20 and a standard library that provides `<format>`, the library provides a `std::formatter`
+specialization for JSON values. To override the built-in check, define `JSON_HAS_STD_FORMAT` to `1` or `0`.
+
+See [full documentation of `JSON_HAS_STD_FORMAT`](../api/macros/json_has_std_format.md).
+
+## `JSON_HAS_THREE_WAY_COMPARISON`
+
+When the compiler and standard library support 3-way comparison (the spaceship operator `<=>`), the library provides it
+for JSON values. To override the built-in check, define `JSON_HAS_THREE_WAY_COMPARISON` to `1` or `0`.
+
+See [full documentation of `JSON_HAS_THREE_WAY_COMPARISON`](../api/macros/json_has_three_way_comparison.md).
+
 ## `JSON_NOEXCEPTION`
 
 Exceptions can be switched off by defining the symbol `JSON_NOEXCEPTION`.

docs/mkdocs/docs/features/merge_patch.md

@@ -9,6 +9,13 @@ syntax that closely mimics the document being modified. Unlike [JSON Patch](json
 express every kind of change (e.g., it cannot reorder array elements or remove a specific array element), but it is
 easier to read and write for object-shaped documents.
 
+!!! tip "Not a general deep merge"
+
+    A merge patch is not a general deep merge: a `#!json null` value in the patch deletes the key from the target.
+    To merge two objects recursively (e.g., defaults and user settings), use
+    [`update`](../api/basic_json/update.md) with `merge_objects` set to `#!cpp true`; see
+    [Merging objects](modifying_values.md#merging-objects).
+
 ??? example
 
     The following code shows how a JSON Merge Patch is applied to a JSON document.
@@ -28,3 +35,4 @@ easier to read and write for object-shaped documents.
 - [JSON Patch and Diff](json_patch.md) - a more expressive alternative that describes a sequence of operations
 - [JSON Pointer](json_pointer.md) - the addressing scheme used by JSON Patch
 - Function [`merge_patch`](../api/basic_json/merge_patch.md)
+- Function [`update`](../api/basic_json/update.md) - merge objects, optionally recursively

docs/mkdocs/docs/features/modifying_values.md

@@ -35,8 +35,12 @@ the insertion happened — useful for "add if absent" semantics.
 
 ## Merging objects
 
-To merge one object into another, [`update`](../api/basic_json/update.md) copies all members from another object,
-overwriting existing keys (similar to Python's `dict.update`). This is the idiomatic way to combine two objects.
+To merge one object into another, [`update`](../api/basic_json/update.md) copies all members from another object
+(similar to Python's `dict.update`). This is the idiomatic way to combine two objects. It has two modes:
+
+- By default, the merge is shallow: existing keys are overwritten, even if both values are objects.
+- With `merge_objects = #!cpp true`, keys whose values are objects in both JSON values are merged recursively.
+  Everything else is overwritten. In particular, arrays are replaced, not concatenated.
 
 ??? example
 
@@ -50,9 +54,22 @@ overwriting existing keys (similar to Python's `dict.update`). This is the idiom
     --8<-- "examples/update.output"
     ```
 
-For a recursive merge that follows [RFC 7386](https://tools.ietf.org/html/rfc7386), see
-[JSON Merge Patch](merge_patch.md). To apply a sequence of well-defined edit operations, see
-[JSON Patch](json_patch.md).
+A common use of the recursive mode is combining defaults with user settings. Nested defaults that the user did not set
+are kept:
+
+```cpp
+json defaults = {{"log", {{"level", "info"}, {"file", "app.log"}}}, {"retries", 3}};
+json user_settings = {{"log", {{"level", "debug"}}}};
+
+json config = defaults;
+config.update(user_settings, true);
+// {"log":{"file":"app.log","level":"debug"},"retries":3}
+```
+
+[JSON Merge Patch](merge_patch.md) ([RFC 7386](https://tools.ietf.org/html/rfc7386)) also merges objects recursively,
+but it is a different tool: a `#!json null` in the patch means "remove this key". It is meant for applying merge patch
+documents (e.g., received via HTTP PATCH). To merge configuration-like objects, use `#!cpp update(..., true)`. To apply
+a sequence of well-defined edit operations, see [JSON Patch](json_patch.md).
 
 ## Removing elements
 
@@ -72,6 +89,7 @@ a.erase(1);             // [1,3,4]  (erase by index)
 
 - [`push_back`](../api/basic_json/push_back.md) / [`emplace_back`](../api/basic_json/emplace_back.md) - append to an array
 - [`emplace`](../api/basic_json/emplace.md) - insert into an object if the key is absent
-- [`update`](../api/basic_json/update.md) - merge objects
+- [`update`](../api/basic_json/update.md) - merge objects (shallow, or recursive with `merge_objects`)
+- [`merge_patch`](../api/basic_json/merge_patch.md) - apply an RFC 7386 merge patch
 - [`erase`](../api/basic_json/erase.md) / [`clear`](../api/basic_json/clear.md) - remove elements
 - [JSON Patch and Diff](json_patch.md) and [JSON Merge Patch](merge_patch.md) - structured modifications

docs/mkdocs/docs/features/namespace.md

@@ -101,3 +101,9 @@ follows:
 
 - Introduced inline namespace (`json_v3_11_0[_abi-tag]*`) in version 3.11.0.
 - Changed structure of inline namespace in version 3.11.2.
+- Added ABI tag `_dp` ([`JSON_DIAGNOSTIC_POSITIONS`](../api/macros/json_diagnostic_positions.md)) in version 3.12.0.
+- Added ABI tags `_bics` ([`JSON_BRACE_INIT_COPY_SEMANTICS`](../api/macros/json_brace_init_copy_semantics.md)), `_psp`
+  ([`JSON_PRECISE_STREAM_POSITION`](../api/macros/json_precise_stream_position.md)), `_snul`
+  ([`JSON_STRICT_NUL_HANDLING`](../api/macros/json_strict_nul_handling.md)), `_sbu8`
+  ([`JSON_STRICT_BINARY_UTF8`](../api/macros/json_strict_binary_utf8.md)), and `_ekmo`
+  ([`JSON_USE_OBJECTS_FOR_ENUM_KEYED_MAPS`](../api/macros/json_use_objects_for_enum_keyed_maps.md)) in version 3.13.0.

docs/mkdocs/docs/features/types/number_handling.md

@@ -82,12 +82,13 @@ flowchart TD
 
     - Numbers with a decimal digit or scientific notation are always stored as `#!c double`.
     - The number types can be changed, see [Template number types](#template-number-types). 
-    - Integers are converted by the library's own digit parser. Floating-point numbers are converted with
-      [`std::from_chars`](https://en.cppreference.com/w/cpp/utility/from_chars) if the library is compiled with C++17
-      and the standard library supports it, then with an exact fast path for `#!c double` values with few significant
-      digits, and otherwise with the locale-aware
-      [`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof) (`std::strtof`/`std::strtold` for the
-      other floating-point types). Before version 3.13.0, the conversion was realized by
+    - The library converts integers and floating-point numbers itself, independent of the locale. Floating-point
+      numbers are correctly rounded (to nearest, ties to even). Only a `#!c long double` that is not IEEE 754 binary64
+      (e.g., the 80-bit x87 format) is converted with `#!cpp std::from_chars` where available, or else with
+      [`std::strtold`](https://en.cppreference.com/w/cpp/string/byte/strtof). For that call, the library temporarily
+      replaces the `.` with the decimal point of the current locale (which may be longer than one byte, e.g., in
+      `fa_IR.UTF-8`), so the result does not depend on the locale either. Changing the locale in another thread during
+      parsing is undefined behavior of the C library, though. Before version 3.13.0, the conversion was realized by
       [`std::strtoull`](https://en.cppreference.com/w/cpp/string/byte/strtoul),
       [`std::strtoll`](https://en.cppreference.com/w/cpp/string/byte/strtol), and `std::strtod`, respectively.
 
@@ -100,10 +101,10 @@ flowchart TD
 ### Number limits
 
 - Any 64-bit signed or unsigned integer can be stored without loss of precision.
-- Numbers exceeding the limits of `#!c double` (i.e., numbers that after conversion via
-[`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof) are not satisfying
+- Numbers exceeding the limits of `#!c double` (i.e., numbers whose rounded value is not satisfying
 [`std::isfinite`](https://en.cppreference.com/w/cpp/numeric/math/isfinite) such as `#!c 1E400`) will throw exception
-[`json.exception.out_of_range.406`](../../home/exceptions.md#jsonexceptionout_of_range406) during parsing.
+[`json.exception.out_of_range.406`](../../home/exceptions.md#jsonexceptionout_of_range406) during parsing. Numbers too
+small for `#!c double` (such as `#!c 1E-400`) become zero, with the sign of the number.
 - Floating-point numbers are rounded to the next number representable as `double`. For instance
 `#!c 3.141592653589793238462643383279` is stored as [`0x400921fb54442d18`](https://float.exposed/0x400921fb54442d18).
 This is the same behavior as the code `#!c double x = 3.141592653589793238462643383279;`.
@@ -133,9 +134,10 @@ That is, `-0` is stored as a signed integer, but the serialization does not repr
 ### Number serialization
 
 - Integer numbers are serialized as is; that is, no scientific notation is used.
-- Floating-point numbers are serialized as specified by the `#!c %g` printf modifier with 
-  [`std::numeric_limits<double>::max_digits10`](https://en.cppreference.com/w/cpp/types/numeric_limits/max_digits10)
-  significant digits. The rationale is to use the shortest representation while still allowing round-tripping.
+- Floating-point numbers are serialized with the fewest digits that read back as the same value (the closest such
+  digits if there are several), in the layout of the `#!c %g` printf modifier: `#!c 1.5`, `#!c 100.0`, `#!c 1e+100`.
+  Doubles are converted with the algorithm of [Żmij](https://github.com/vitaut/zmij), floats with Grisu2, which
+  can write more digits than necessary.
 
 !!! hint "Notes regarding precision of floating-point numbers"
 
@@ -351,9 +353,8 @@ The number types can be changed with template parameters.
 
     A `basic_json` type that uses `#!c long double` as floating-point type.
 
-    ```cpp hl_lines="2"
-    using json_ld = nlohmann::basic_json<std::map, std::vector, std::string, bool,
-                                         std::int64_t, std::uint64_t, long double>;
+    ```cpp hl_lines="1"
+    using json_ld = nlohmann::json::with_float_t<long double>;
     ```
 
     Note values should then be parsed with `json_ld::parse` rather than `json::parse` as the latter would parse

docs/mkdocs/docs/features/types/template_parameters.md

@@ -8,6 +8,10 @@ these requirements so they do not have to be discovered by trial and error. Each
 that are known to work for that parameter and the ones that do not, checked against Boost 1.83, Abseil 20250127.0,
 Folly, EASTL 3.21, `ankerl::unordered_dense`, `phmap`, `gtl`, `robin_hood`, `tsl::ordered_map`, and Qt 6.
 
+To change a single template parameter and keep the others, use the member alias templates
+[`with_*_t`](../../api/basic_json/with_t.md); for instance, `nlohmann::json::with_float_t<long double>` is `json` with
+`#!cpp long double` as [`number_float_t`](../../api/basic_json/number_float_t.md).
+
 ## How to read this page
 
 Requirements are split into two groups:
@@ -26,9 +30,9 @@ Requirements are split into two groups:
     diagnosed with dedicated error messages, and violating most of them results in a compiler error somewhere inside
     the library. Four violations are not caught at compile time at all:
 
-    - A [`StringType`](#stringtype) whose `data()` is not null-terminated compiles and can silently misparse
-      floating-point numbers, because the lexer may hand the buffer to `#!cpp std::strtod`, which reads up to the
-      terminating null character.
+    - A [`StringType`](#stringtype) whose `data()` is not null-terminated compiles and silently misparses numbers
+      stored as a `#!cpp long double` that is not IEEE 754 binary64 (e.g., the 80-bit x87 format), because the lexer
+      hands the buffer to `#!cpp std::strtold`.
     - A stateful [`AllocatorType`](#allocatortype) compiles and silently ignores its state: allocation, deallocation,
       and [`get_allocator()`](../../api/basic_json/get_allocator.md) each use a different default-constructed instance.
     - The two [cross-specialization conversions](#cross-specialization-conversions) below. These abort on an assertion
@@ -143,7 +147,7 @@ struct unordered_map_object
     using base_t::base_t;
 };
 
-using unordered_json = nlohmann::basic_json<unordered_map_object>;
+using unordered_json = nlohmann::json::with_object_t<unordered_map_object>;
 ```
 
 Whether `#!cpp std::unordered_map` can be instantiated at all depends on the standard library: `object_t` is formed
@@ -176,7 +180,7 @@ struct flat_hash_object
     using base_t::base_t;
 };
 
-using flat_hash_json = nlohmann::basic_json<flat_hash_object>;
+using flat_hash_json = nlohmann::json::with_object_t<flat_hash_object>;
 ```
 
 `absl::node_hash_map` keeps references to the mapped values valid across insertions; `absl::flat_hash_map` does not,
@@ -349,16 +353,21 @@ using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
 ### Always required
 
 - A member type `value_type` that is one byte wide and `char`-compatible. The library stores and processes UTF-8
-  encoded `char` data and passes `data()` to functions that take a `#!cpp const char*`, such as `#!cpp std::strtod`.
+  encoded `char` data and passes `data()` to functions that take a `#!cpp const char*`, such as `#!cpp std::strtold`
+  (only used to parse a `#!cpp long double` that is not IEEE 754 binary64, see
+  [`NumberFloatType`](#numberfloattype)).
   `#!cpp std::wstring`, `#!cpp std::u16string`, and `#!cpp std::u32string` are **not** valid choices; see the FAQ on
   [wide string handling](../../home/faq.md#wide-string-handling).
 - Constructors: default, copy, move, from `#!cpp const char*` (which must not be `#!cpp explicit`), from
   `#!cpp (const char*, size_type)`, and from `#!cpp (size_type, char)`; and copy or move assignment.
 - Member functions `size()`, `clear()`, `resize(n, c)`, `data()`, `push_back(char)`, and `operator[]`
   (const and non-const, returning references). `c_str()` and `back()` are **not** required.
-- `data()` must return a pointer to a contiguous, **null-terminated** buffer -- the parser may hand it to
-  `#!cpp std::strtod`, which reads up to the null character. A type whose `data()` is not null-terminated does not
-  fail to compile; it can silently misparse floating-point numbers.
+- `data()` must return a pointer to a contiguous, **null-terminated** buffer. `#!cpp float`, `#!cpp double`, and a
+  `#!cpp long double` that is IEEE 754 binary64 are converted by the library itself and do not depend on this. For any
+  other `NumberFloatType` (a `#!cpp long double` of another format), the parser falls back to `#!cpp std::strtold` when
+  `#!cpp std::from_chars` is not available or declines the token, and `std::strtold` reads up to the null character. A type whose `data()`
+  is not null-terminated does not fail to compile; with such a `NumberFloatType` it can silently misparse
+  floating-point numbers.
 - `append(const char*, size_type)`, used by [`dump`](../../api/basic_json/dump.md), and `append(const StringType&)`,
   used by the CBOR reader for indefinite-length strings. The library's internal string concatenation additionally has
   to append a `#!cpp char` and a `#!cpp const char*`; for each it selects between `append(arg)`, `#!cpp operator+=`,
@@ -537,16 +546,18 @@ therefore silently changes parse results rather than raising an error. See
 
 `NumberFloatType` must be one of `#!cpp float`, `#!cpp double`, or `#!cpp long double`:
 
-- The [parser](../parsing/index.md) converts number literals with `#!cpp std::from_chars` or, as a fallback, with
-  `#!cpp std::strtof`, `#!cpp std::strtod`, or `#!cpp std::strtold`; the library provides overloads for exactly these
-  three types.
+- The [parser](../parsing/index.md) converts number literals to `#!cpp float`, `#!cpp double`, and a
+  `#!cpp long double` that is IEEE 754 binary64 itself; other `#!cpp long double` formats are converted with
+  `#!cpp std::from_chars` where available, or with `#!cpp std::strtold`. The library provides overloads for exactly
+  these three types.
 - [`dump`](../../api/basic_json/dump.md) falls back to `#!cpp std::snprintf` with the `%g` and `%Lg` conversion
   specifiers, for which the library likewise provides only `#!cpp double` and `#!cpp long double` overloads
   (`#!cpp float` is promoted to `#!cpp double`).
 
-If `#!cpp std::numeric_limits<NumberFloatType>` describes an IEEE 754 binary32 or binary64 number, `dump` uses the
-Grisu2 algorithm, which produces the shortest representation that round-trips. Otherwise the `snprintf` fallback with
-`max_digits10` digits is used.
+If `#!cpp std::numeric_limits<NumberFloatType>` describes an IEEE 754 binary64 number, `dump` uses the algorithm of
+Żmij, which produces the shortest representation that round-trips. For IEEE 754 binary32 numbers, it uses Grisu2,
+which produces a short representation that round-trips. Otherwise the `snprintf` fallback with `max_digits10` digits is
+used.
 
 ### Required for the binary formats
 
@@ -558,7 +569,7 @@ binary32 or binary64 field and have no encoding for `#!cpp long double`.
 
 | Type                     | Support                                                                                                               |
 |--------------------------|-----------------------------------------------------------------------------------------------------------------------|
-| `#!cpp double` (default) | full; short round-trip output through Grisu2                                                                          |
+| `#!cpp double` (default) | full; shortest round-trip output through Żmij                                                                         |
 | `#!cpp float`            | full; short round-trip output through Grisu2                                                                          |
 | `#!cpp long double`      | `dump` and `parse` only; the binary format writers do not compile, as they only handle IEEE 754 binary32 and binary64 |
 | any other type           | not usable                                                                                                            |

docs/mkdocs/docs/home/architecture.md

@@ -34,7 +34,7 @@ flowchart LR
 
 - **JSON text** is read by an [input adapter](#input-adapters), tokenized by the lexer, and turned into SAX events by
   the parser.
-- **Binary formats** (BJData, BSON, CBOR, MessagePack, UBJSON) are read by an input adapter and turned into the same SAX
+- **Binary formats** (BJData, BON8, BSON, CBOR, MessagePack, UBJSON) are read by an input adapter and turned into the same SAX
   events by the `binary_reader`.
 - A [SAX consumer](#sax-interface) receives the events. The one used by [`parse`](../api/basic_json/parse.md) builds a
   `basic_json` value tree.

docs/mkdocs/docs/home/design_goals.md

@@ -6,7 +6,7 @@ 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/tests/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 [OpenSSF Best Practices](https://www.bestpractices.dev/projects/289).
+- **Serious testing**. Our class is heavily [unit-tested](https://github.com/nlohmann/json/tree/develop/tests/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 [OpenSSF Best Practices](https://www.bestpractices.dev/projects/289).
 
 Other aspects were not so important to us:
 
@@ -14,4 +14,4 @@ Other aspects were not so important to us:
 
 - **Speed**. There are certainly [faster JSON libraries](https://github.com/miloyip/nativejson-benchmark#parsing-time) out there. However, if your goal is to speed up your development by adding JSON support with a single header, then this library is the way to go. If you know how to use a `std::vector` or `std::map`, you are already set.
 
-See the [contribution guidelines](https://github.com/nlohmann/json/blob/master/.github/CONTRIBUTING.md#please-dont) for more information.
+See the [contribution guidelines](https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md#please-dont) for more information.

docs/mkdocs/docs/home/exceptions.md

@@ -104,7 +104,7 @@ See [documentation of `JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) for
 ## Parse errors
 
 The library throws this exception when a parse error occurs. Parse errors
-can occur during the deserialization of JSON text, CBOR, MessagePack, as well
+can occur during the deserialization of JSON text or of one of the binary formats (BJData, BON8, BSON, CBOR, MessagePack, UBJSON), as well
 as when using JSON Patch.
 
 Exceptions have ids 1xx.
@@ -190,7 +190,7 @@ This error indicates a syntax error while deserializing a JSON text. The error m
 !!! tip
 
     - Make sure the input is correctly read. Try to write the input to standard output to check if, for instance, the input file was successfully opened.
-    - Paste the input to a JSON validator like <http://jsonlint.com> or a tool like [jq](https://stedolan.github.io/jq/).
+    - Paste the input to a JSON validator like <https://jsonlint.com> or a tool like [jq](https://jqlang.github.io/jq/).
 
 ### json.exception.parse_error.102
 
@@ -278,7 +278,9 @@ In a JSON Pointer, only `~0` and `~1` are valid escape sequences.
 
 ### json.exception.parse_error.109
 
-A JSON Pointer array index must be a number.
+A JSON Pointer array index must be a number. This exception is thrown for an array index that does not begin with a
+digit, except for `-` and the empty reference token, which throw [`out_of_range.404`](#jsonexceptionout_of_range404)
+where they cannot be resolved.
 
 !!! failure "Example messages"
 
@@ -289,6 +291,11 @@ A JSON Pointer array index must be a number.
     [json.exception.parse_error.109] parse error: array index '+1' is not a number
     ```
 
+!!! note
+
+    Before version 3.13.0, a one-character array index that is not a digit (e.g., `x`) threw
+    [`out_of_range.404`](#jsonexceptionout_of_range404) instead.
+
 ### json.exception.parse_error.110
 
 When parsing a [binary format](../features/binary_formats/index.md), the byte vector ends before the complete value has
@@ -810,7 +817,7 @@ does not list an enumerator and it is therefore converted like the first listed
 A discarded value (one created by [`parse()`](../api/basic_json/parse.md) with a callback that returns `false` for the
 value, or by default-constructing a [`basic_json`](../api/basic_json/index.md) with
 [`value_t::discarded`](../api/basic_json/value_t.md)) was passed to a binary serialization function, either directly or
-nested in an array or object. There is no way to represent a discarded value in CBOR, MessagePack, UBJSON, BJData, or BSON.
+nested in an array or object. There is no way to represent a discarded value in CBOR, MessagePack, UBJSON, BJData, BSON, or BON8.
 
 !!! failure "Example message"
 
@@ -871,7 +878,8 @@ The provided key was not found in the JSON object.
 
 ### json.exception.out_of_range.404
 
-A reference token in a JSON Pointer could not be resolved.
+A reference token in a JSON Pointer could not be resolved, for instance an array index that begins with a digit but
+contains other characters (e.g., `1a`), or `-` where it cannot be used.
 
 !!! failure "Example message"
 

docs/mkdocs/docs/home/license.md

@@ -18,6 +18,8 @@ The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed und
 
 The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright © 2009 [Florian Loitsch](https://florian.loitsch.com/)
 
+The class contains a port of the shortest double-to-decimal conversion of [Żmij](https://github.com/vitaut/zmij) by Victor Zverovich, including the conversion of the digits to text by Xiang JunBo and the SIMD instruction sequence of Dougall Johnson, which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright © 2025 [Victor Zverovich](https://github.com/vitaut)
+
 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/).
 
-The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five 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 © 2021 The fast_float authors
+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 © 2021 The fast_float authors

docs/mkdocs/docs/home/releases.md

@@ -26,7 +26,7 @@ Fixes bugs found in 3.11.3 and adds several features. All changes are backward-c
   [BJData](../features/binary_formats/bjdata.md) draft 3 and unsigned 64-bit integers for
   [BSON](../features/binary_formats/bson.md).
 - Adds multidimensional C-array conversion and UTF-8 encoded `std::filesystem::path` conversions, and
-  lowers the minimum [CMake](../integration/cmake.md) version to allow CMake 4.0.
+  raises the minimum [CMake](../integration/cmake.md) version to 3.5 and supports CMake 4.0.
 
 [Full release notes](https://github.com/nlohmann/json/releases/tag/v3.12.0).
 

docs/mkdocs/docs/integration/hunter/CMakeLists.txt

@@ -2,8 +2,8 @@ cmake_minimum_required(VERSION 3.15)
 
 include("cmake/HunterGate.cmake")
 HunterGate(
-    URL "https://github.com/cpp-pm/hunter/archive/v0.23.297.tar.gz"
-    SHA1 "3319fe6a3b08090df7df98dee75134d68e2ef5a3"
+    URL "https://github.com/cpp-pm/hunter/archive/v0.26.12.tar.gz"
+    SHA1 "6498c5d0dec25d7fffb2b0574ebaf265179b894d"
 )
 
 project(json_example)

docs/mkdocs/docs/integration/migration_guide.md

@@ -116,7 +116,7 @@ function to use instead.
     === "Deprecated"
   
           ```cpp
-          using my_json = nlohmann::basic_json<std::map, std::vector, my_string_type>;
+          using my_json = nlohmann::json::with_string_t<my_string_type>;
           nlohmann::json_pointer<my_json> ptr("/foo/bar/1");
           ```
   

docs/mkdocs/hooks/copy_markdown_source.py

@@ -2,12 +2,30 @@
 
 # Creates a `<path>.md` sibling of each HTML output (for example,
 # `features/comments/` becomes `features/comments.md`) so agents and tools can
-# fetch the raw Markdown directly instead of parsing rendered HTML.
+# fetch the raw Markdown directly instead of parsing rendered HTML. The
+# `--8<-- "path"` lines of pymdownx.snippets are expanded with the extension's
+# own preprocessor and the settings from mkdocs.yml, so the copies contain the
+# included example code and files instead of the include directives.
 
+import io
 import os
-import shutil
+
+import markdown
+from pymdownx.snippets import SnippetMissingError
 
 _pages = []
+_snippets = None
+
+
+def on_config(config):
+    global _snippets
+    md = markdown.Markdown(
+        extensions=["pymdownx.snippets"],
+        extension_configs={"pymdownx.snippets": config["mdx_configs"].get("pymdownx.snippets", {})},
+    )
+    _snippets = md.preprocessors["snippet"]
+    _snippets.auto_append = []  # the glossary is only needed to render abbreviations
+    return config
 
 
 def on_files(files, config):
@@ -22,4 +40,11 @@ def on_post_build(config):
         url = file.url.rstrip("/")
         target = os.path.join(site_dir, (url or "index") + ".md")
         os.makedirs(os.path.dirname(target), exist_ok=True)
-        shutil.copyfile(file.abs_src_path, target)
+        with io.open(file.abs_src_path, encoding="utf-8", newline="") as source:
+            text = source.read()
+        try:
+            text = "\n".join(_snippets.run(text.split("\n")))
+        except (SnippetMissingError, OSError):
+            pass  # keep the include directives; the regular build reports the missing file
+        with io.open(target, "w", encoding="utf-8", newline="") as copy:
+            copy.write(text)

docs/mkdocs/includes/glossary.md

@@ -1,7 +1,7 @@
 <!-- https://squidfunk.github.io/mkdocs-material/reference/tooltips/#adding-a-glossary -->
 
 *[ADL]: Argument-dependent lookup
-*[API]: Application Programming Interfaces
+*[API]: Application Programming Interface
 *[ASCII]: American Standard Code for Information Interchange
 *[BDFL]: Benevolent Dictator for Life
 *[BJData]: Binary JData

docs/mkdocs/mkdocs.yml

@@ -299,6 +299,7 @@ nav:
           - 'JSON_DISABLE_TUPLE_REFERENCE_CONVERSION': api/macros/json_disable_tuple_reference_conversion.md
           - 'JSON_HAS_CPP_11, JSON_HAS_CPP_14, JSON_HAS_CPP_17, JSON_HAS_CPP_20, JSON_HAS_CPP_23, JSON_HAS_CPP_26': api/macros/json_has_cpp_11.md
           - 'JSON_HAS_EXPERIMENTAL_FILESYSTEM, JSON_HAS_FILESYSTEM': api/macros/json_has_filesystem.md
+          - 'JSON_HAS_RANGE_VIEW_CONVERSION': api/macros/json_has_range_view_conversion.md
           - 'JSON_HAS_RANGES': api/macros/json_has_ranges.md
           - 'JSON_HAS_STATIC_RTTI': api/macros/json_has_static_rtti.md
           - 'JSON_HAS_STD_FORMAT': api/macros/json_has_std_format.md

docs/mkdocs/scripts/check_structure.py

@@ -288,36 +288,6 @@ def check_header_links() -> None:
                                f'link to "{match.group(0)}" does not point to a documentation page')
 
 
-def check_docset() -> None:
-    """Every API page and every macro has an entry in the docset index; no entry points to a missing page."""
-    entry_re = re.compile(r"VALUES \('((?:[^']|'')*)', '(\w+)', '([^']*)'\);")
-    names_by_path = {}
-    with open("../../docset/docSet.sql", encoding="utf-8") as sql:
-        for name, _, path in entry_re.findall(sql.read()):
-            names_by_path.setdefault(path, set()).add(name.replace("''", "'"))
-
-    def to_path(page):
-        if os.path.basename(page) == "index.md":
-            return page[:-len("index.md")] + "index.html"
-        return page[:-len(".md")] + "/index.html"
-
-    pages = sorted(glob.glob("**/*.md", recursive=True))
-    for path in sorted(set(names_by_path) - {to_path(p) for p in pages}):
-        report("docset/stale_entry", "../../docset/docSet.sql", f'entry "{path}" has no documentation page')
-    for page in (p for p in pages if p.startswith("api/")):
-        names = names_by_path.get(to_path(page))
-        if not names:
-            report("docset/missing_entry", page, "page has no entry in docs/docset/docSet.sql")
-        elif page.startswith("api/macros/") and os.path.basename(page) != "index.md":
-            with open(page, encoding="utf-8") as content:
-                text = content.read()
-            match = re.search(r"^# (.+)$", text, re.MULTILINE) or re.search(r"<h1>(.*?)</h1>", text, re.DOTALL)
-            title = re.sub(r"<[^>]+>|\s+", " ", match.group(1))
-            for macro in filter(None, (x.strip() for x in re.split(r"[,/]", title))):
-                if macro not in names:
-                    report("docset/missing_macro", page, f'macro "{macro}" has no entry in docs/docset/docSet.sql')
-
-
 if __name__ == "__main__":
     print(120 * "-")
     check_structure()
@@ -327,7 +297,6 @@ if __name__ == "__main__":
     check_heading_levels()
     check_image_alt_text()
     check_header_links()
-    check_docset()
     print(120 * "-")
 
     if warnings > 0:

include/nlohmann/detail/bit_ops.hpp

@@ -9,12 +9,16 @@
 #pragma once
 
 #include <cstdint> // uint64_t
+#include <cstring> // memcpy
+#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64)) && (!defined(__SIZEOF_INT128__) || (!defined(__GNUC__) && !defined(__clang__)))
+    #include <intrin0.h> // __umulh, _umul128, _BitScanForward64, _BitScanReverse64
+#endif
 
-#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/macro_scope.hpp> // JSON_HEDLEY_ALWAYS_INLINE, NLOHMANN_JSON_NAMESPACE_BEGIN
 
 // Portable bit-level helpers for the number and string scanners. They use
-// compiler builtins where available and plain C++ otherwise, so they need no
-// platform headers and work regardless of byte order.
+// compiler builtins or platform-specific intrinsics where available and plain
+// C++ otherwise, so they work regardless of byte order.
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
@@ -25,6 +29,10 @@ inline int count_leading_zeros(std::uint64_t x) noexcept
 {
 #if defined(__GNUC__) || defined(__clang__)
     return __builtin_clzll(x);
+#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
+    _BitScanReverse64(&index, x);
+    return 63 - static_cast<int>(index);
 #else
     int n = 0;
     for (int shift = 32; shift != 0; shift >>= 1)
@@ -39,6 +47,29 @@ inline int count_leading_zeros(std::uint64_t x) noexcept
 #endif
 }
 
+/// number of trailing zero bits of x (x != 0)
+inline int count_trailing_zeros(std::uint64_t x) noexcept
+{
+#if defined(__GNUC__) || defined(__clang__)
+    return __builtin_ctzll(x);
+#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
+    _BitScanForward64(&index, x);
+    return static_cast<int>(index);
+#else
+    int n = 0;
+    for (int shift = 32; shift != 0; shift >>= 1)
+    {
+        if ((x << (64 - shift)) == 0)
+        {
+            n += shift;
+            x >>= shift;
+        }
+    }
+    return n;
+#endif
+}
+
 /// the 128-bit product of two 64-bit numbers
 struct uint128_parts
 {
@@ -52,6 +83,12 @@ inline uint128_parts full_multiplication(std::uint64_t a, std::uint64_t b) noexc
     __extension__ using uint128 = unsigned __int128;
     const uint128 r = static_cast<uint128>(a) * b;
     return {static_cast<std::uint64_t>(r), static_cast<std::uint64_t>(r >> 64u)};
+#elif defined(_MSC_VER) && defined(_M_X64)
+    std::uint64_t high = 0;
+    const std::uint64_t low = _umul128(a, b, &high);
+    return {low, high};
+#elif defined(_MSC_VER) && defined(_M_ARM64)
+    return {a * b, __umulh(a, b)};
 #else
     const std::uint64_t a_lo = a & 0xFFFFFFFFu;
     const std::uint64_t a_hi = a >> 32u;
@@ -66,15 +103,27 @@ inline uint128_parts full_multiplication(std::uint64_t a, std::uint64_t b) noexc
 #endif
 }
 
-/// eight bytes as a little-endian word (compilers fold this into one load on
-/// little-endian targets)
-inline std::uint64_t read_eight_bytes(const char* p) noexcept
+/// eight bytes as a little-endian word (a single load on little-endian
+/// targets; always inlined, as GCC otherwise calls it in the number loops)
+JSON_HEDLEY_ALWAYS_INLINE std::uint64_t read_eight_bytes(const unsigned char* b) noexcept
 {
-    const auto* b = reinterpret_cast<const unsigned char*>(p); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
+#if defined(_MSC_VER) || defined(__x86_64__) || defined(__i386__) || (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+    // the byte order already matches (all MSVC targets are little-endian)
+    std::uint64_t result = 0;
+    std::memcpy(&result, b, sizeof(result));
+    return result;
+#else
     return static_cast<std::uint64_t>(b[0]) | (static_cast<std::uint64_t>(b[1]) << 8u)
            | (static_cast<std::uint64_t>(b[2]) << 16u) | (static_cast<std::uint64_t>(b[3]) << 24u)
            | (static_cast<std::uint64_t>(b[4]) << 32u) | (static_cast<std::uint64_t>(b[5]) << 40u)
            | (static_cast<std::uint64_t>(b[6]) << 48u) | (static_cast<std::uint64_t>(b[7]) << 56u);
+#endif
+}
+
+/// eight bytes as a little-endian word
+JSON_HEDLEY_ALWAYS_INLINE std::uint64_t read_eight_bytes(const char* p) noexcept
+{
+    return read_eight_bytes(reinterpret_cast<const unsigned char*>(p)); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
 }
 
 }  // namespace detail

include/nlohmann/detail/conversions/from_json.hpp

@@ -48,7 +48,7 @@ inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be null, but is ", j.type_name()), &j));
+        throw_type_must_be("null", j);
     }
     n = nullptr;
 }
@@ -102,7 +102,7 @@ void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
         case value_t::binary:
         case value_t::discarded:
         default:
-            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+            throw_type_must_be("number", j);
     }
 }
 
@@ -111,7 +111,7 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t&
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be boolean, but is ", j.type_name()), &j));
+        throw_type_must_be("boolean", j);
     }
     b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
 }
@@ -121,7 +121,7 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t&
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+        throw_type_must_be("string", j);
     }
     s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
 }
@@ -137,7 +137,7 @@ inline void from_json(const BasicJsonType& j, StringType& s)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+        throw_type_must_be("string", j);
     }
 
     s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
@@ -183,7 +183,7 @@ inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
     l.clear();
     std::transform(j.rbegin(), j.rend(),
@@ -200,7 +200,7 @@ inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
     l.resize(j.size());
     std::transform(j.begin(), j.end(), std::begin(l),
@@ -305,7 +305,7 @@ void())
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
 
     from_json_array_impl(j, arr, priority_tag<3> {});
@@ -324,7 +324,7 @@ auto from_json(const BasicJsonType& j, identity_tag<std::array<T, N>> tag)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
 
     return from_json_inplace_array_impl(j, tag, make_index_sequence<N> {});
@@ -335,7 +335,7 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t&
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be binary, but is ", j.type_name()), &j));
+        throw_type_must_be("binary", j);
     }
 
     bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
@@ -356,7 +356,7 @@ inline void from_json(const BasicJsonType& j, CompatibleArrayType& bin)
     }
     else
     {
-        JSON_THROW(type_error::create(302, concat("type must be binary or array, but is ", j.type_name()), &j));
+        throw_type_must_be("binary or array", j);
     }
 }
 
@@ -377,7 +377,7 @@ inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be object, but is ", j.type_name()), &j));
+        throw_type_must_be("object", j);
     }
 
     ConstructibleObjectType ret;
@@ -432,7 +432,7 @@ inline void from_json(const BasicJsonType& j, ArithmeticType& val)
         case value_t::binary:
         case value_t::discarded:
         default:
-            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+            throw_type_must_be("number", j);
     }
 }
 
@@ -504,7 +504,7 @@ auto from_json(const BasicJsonType& j, TupleRelated&& t)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
 
     return from_json_tuple_impl(j, std::forward<TupleRelated>(t), priority_tag<3> {});
@@ -517,14 +517,14 @@ void from_json_pair_array_to_map(const BasicJsonType& j, MapType& m)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+        throw_type_must_be("array", j);
     }
     m.clear();
     for (const auto& p : j)
     {
         if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
         {
-            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &p));
+            throw_type_must_be("array", p);
         }
         m.emplace(p.at(0).template get<typename MapType::key_type>(), p.at(1).template get<typename MapType::mapped_type>());
     }
@@ -591,7 +591,7 @@ inline void from_json(const BasicJsonType& j, std_fs::path& p)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
     {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+        throw_type_must_be("string", j);
     }
     const auto& s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
     // Checking for C++20 standard or later can be insufficient in case the

include/nlohmann/detail/conversions/to_chars.hpp

@@ -4,6 +4,7 @@
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
 // SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
+// SPDX-FileCopyrightText: 2025 Victor Zverovich <https://github.com/vitaut/zmij>
 // SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT
 
@@ -11,11 +12,32 @@
 
 #include <array> // array
 #include <cmath>   // signbit, isfinite
+#include <cstddef> // size_t
 #include <cstdint> // intN_t, uintN_t
 #include <cstring> // memcpy, memmove
 #include <limits> // numeric_limits
 #include <type_traits> // conditional
 
+#ifdef _MSC_VER
+    #include <cstdlib> // _byteswap_uint64
+#endif
+
+// SSE2 (every x86-64 CPU) and NEON (every 64-bit Arm CPU) convert the 16
+// digits of a double at once
+#if defined(__x86_64__) || (defined(_M_X64) && !defined(_M_ARM64EC))
+    #include <emmintrin.h>
+    #define JSON_DTOA_SSE2 1
+    #define JSON_DTOA_NEON 0
+#elif (defined(__aarch64__) || defined(_M_ARM64)) && !defined(_M_ARM64EC) && !defined(__ARM_BIG_ENDIAN)
+    #include <arm_neon.h>
+    #define JSON_DTOA_SSE2 0
+    #define JSON_DTOA_NEON 1
+#else
+    #define JSON_DTOA_SSE2 0
+    #define JSON_DTOA_NEON 0
+#endif
+
+#include <nlohmann/detail/conversions/zmij.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
@@ -1047,6 +1069,381 @@ inline char* format_buffer(char* buf, int len, int decimal_exponent,
     return append_exponent(buf, n - 1);
 }
 
+/// eight decimal digits (a value below 10^8) as bytes 0..9, the first digit
+/// in the most significant byte: three steps that divide all lanes at once
+/// by a multiplication (the conversion of Xiang JunBo, as in Zmij)
+inline std::uint64_t eight_digit_bytes(std::uint64_t abcdefgh) noexcept
+{
+    const std::uint64_t abcd_efgh = abcdefgh + (((std::uint64_t{1} << 32u) - 10000u) * ((abcdefgh * (((std::uint64_t{1} << 40u) / 10000u) + 1u)) >> 40u));
+    const std::uint64_t ab_cd_ef_gh = abcd_efgh + (((std::uint64_t{1} << 16u) - 100u) * (((abcd_efgh * (((std::uint64_t{1} << 19u) / 100u) + 1u)) >> 19u) & 0x7F0000007Fu));
+    return ab_cd_ef_gh + (((std::uint64_t{1} << 8u) - 10u) * (((ab_cd_ef_gh * (((std::uint64_t{1} << 10u) / 10u) + 1u)) >> 10u) & 0x000F000F000F000Fu));
+}
+
+/// store the bytes of v, the most significant one first (one byte swap and
+/// one store where the byte order is known: compilers do not reliably merge
+/// the byte stores once this is inlined)
+inline void store_msb_first(char* p, std::uint64_t v) noexcept
+{
+#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    v = __builtin_bswap64(v);
+    std::memcpy(p, &v, sizeof(v));
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+    std::memcpy(p, &v, sizeof(v));
+#elif defined(_MSC_VER) // (little-endian on all its targets)
+    v = _byteswap_uint64(v);
+    std::memcpy(p, &v, sizeof(v));
+#else
+    for (unsigned i = 0; i < 8; ++i)
+    {
+        p[i] = static_cast<char>(v >> (56u - (8u * i)));
+    }
+#endif
+}
+
+/*!
+@brief digits * 10^exp for a double, in the layout of format_buffer()
+
+The layout is that of format_buffer() with min_exp -4 and max_exp 15 (the
+digits10 of double). The digits are converted eight at a time and placed
+with fixed-size moves instead of per-digit loops and moves of the buffer.
+
+@param[in] digits  the digits (not 0, at most 17 digits; trailing zeros allowed)
+@param[in] exp     the decimal exponent of the last digit
+@return a pointer past the text; up to 41 bytes at @a first are written
+        (some beyond the returned end)
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* write_decimal(char* first, std::uint64_t digits, int exp) noexcept
+{
+    JSON_ASSERT(digits != 0 && digits < 100000000000000000u);
+    const std::uint64_t upper = digits / 100000000u;
+    const std::uint64_t b0 = upper / 100000000u; // (one digit: it is its own byte)
+    const std::uint64_t b1 = eight_digit_bytes(upper % 100000000u);
+    const std::uint64_t b2 = eight_digit_bytes(digits % 100000000u);
+    // leading and trailing zero digits: zero bytes, counted without division
+    int leading = 16;
+    int zeros = 16;
+    if (b0 != 0)
+    {
+        leading = count_leading_zeros(b0) / 8;
+    }
+    else if (b1 != 0)
+    {
+        leading = 8 + (count_leading_zeros(b1) / 8);
+    }
+    else
+    {
+        leading += count_leading_zeros(b2) / 8;
+    }
+    if (b2 != 0)
+    {
+        zeros = count_trailing_zeros(b2) / 8;
+    }
+    else if (b1 != 0)
+    {
+        zeros = 8 + (count_trailing_zeros(b1) / 8);
+    }
+    // (else: 16, b0 is the one digit that is not 0)
+    // the digits as text at text + leading, then '0's, so that fixed-size
+    // moves need not check how many digits there are
+    std::array<char, 64> text; // NOLINT(cppcoreguidelines-pro-type-member-init,hicpp-member-init): written before read
+    store_msb_first(text.data(), b0 + 0x3030303030303030u);
+    store_msb_first(text.data() + 8, b1 + 0x3030303030303030u);
+    store_msb_first(text.data() + 16, b2 + 0x3030303030303030u);
+    std::memset(text.data() + 24, '0', 40);
+    const int k = 24 - leading - zeros; // significant digits
+    const int n = k + exp + zeros;      // position of the decimal point after the first digit
+    const char* const s0 = text.data() + leading;
+
+    if (-4 < n && n <= 15)
+    {
+        // "0.[000]digits" (n <= 0) is the digits after 1 - n leading '0's
+        // with the point after the first; "digits[000].0" (n >= k) and
+        // "dig.its" put the point after n characters
+        const int pad = n <= 0 ? 1 - n : 0;
+        const char* const s = s0 - pad;
+        const int len = k + pad;
+        const int point = n + pad;
+        std::memcpy(first, s, 16);
+        std::memcpy(first + point + 1, s + point, 24);
+        first[point] = '.';
+        return first + (point >= len ? point + 2 : len + 1);
+    }
+
+    // d.igitse+XX, with at least two exponent digits (as append_exponent())
+    std::memcpy(first, s0, 16);
+    std::memcpy(first + 2, s0 + 1, 16);
+    first[1] = '.';
+    char* const end = first + (k == 1 ? 1 : k + 1);
+    const int e = n - 1;
+    const auto ea = e < 0 ? 0u - static_cast<unsigned>(e) : static_cast<unsigned>(e); // (unsigned: no signed overflow to assume)
+    const bool three = ea >= 100;
+    end[0] = 'e';
+    end[1] = e < 0 ? '-' : '+';
+    end[2] = static_cast<char>('0' + (three ? ea / 100 : (ea / 10) % 10));
+    end[3] = static_cast<char>('0' + (three ? (ea / 10) % 10 : ea % 10));
+    end[4] = static_cast<char>('0' + (ea % 10));
+    return end + (three ? 5 : 4);
+}
+
+/*!
+@brief the shortest decimal of a positive double (Zmij), as write_decimal()
+writes it
+
+For a normal double, the shorter candidate has 15 or 16 digits: they are
+converted at once (two halves of eight digits) and followed by the digit
+after them, if there is one, without the multiplication and division by 10
+that counting the digits of one number would take. The fixed layouts move
+the digits after the point by one byte.
+
+@return a pointer past the text; up to 41 bytes at @a first are written
+        (some beyond the returned end)
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* write_shortest(char* first, const zmij::shortest_decimal d) noexcept
+{
+    const std::uint64_t sig = d.integral;
+    if (JSON_HEDLEY_UNLIKELY(sig < 100000000000000u || sig >= 10000000000000000u))
+    {
+        // (subnormals)
+        return d.has_digit ? write_decimal(first, (sig * 10) + d.digit, d.exponent) : write_decimal(first, sig, d.exponent + 1);
+    }
+    const bool sixteen = sig >= 1000000000000000u; // (else 15 digits)
+    const int last = d.has_digit ? d.digit : 0;
+    const std::uint64_t upper = sig / 100000000u;
+#if JSON_DTOA_SSE2
+    // NOLINTBEGIN(portability-simd-intrinsics)
+    // the two halves in the 64-bit lanes, each as abcd * 2^32 + efgh, then as
+    // bytes (as eight_digit_bytes(), one lane each)
+    const __m128i x = _mm_set_epi64x(static_cast<long long>(sig - (upper * 100000000u)), static_cast<long long>(upper)); // NOLINT(runtime/int)
+    const __m128i abcd = _mm_srli_epi64(_mm_mul_epu32(x, _mm_set1_epi64x(109951163)), 40); // 2^40 / 10000 + 1
+    const __m128i abcd_efgh = _mm_add_epi64(x, _mm_mul_epu32(abcd, _mm_set1_epi64x(4294957296))); // 2^32 - 10000
+    // 32-bit lanes in the order of the text: abcd, efgh of both halves
+    const __m128i fours = _mm_shuffle_epi32(abcd_efgh, _MM_SHUFFLE(2, 3, 0, 1));
+    const __m128i ab = _mm_srli_epi16(_mm_mulhi_epu16(fours, _mm_set1_epi32(5243)), 3);
+    const __m128i ab_cd = _mm_or_si128(_mm_slli_epi32(_mm_sub_epi16(fours, _mm_mullo_epi16(ab, _mm_set1_epi32(100))), 16), ab);
+    // 16-bit lanes ab (< 100) -> bytes a, b: 256 * ab - 2559 * (ab / 10)
+    const __m128i bytes = _mm_sub_epi16(_mm_slli_epi16(ab_cd, 8), _mm_mullo_epi16(_mm_set1_epi16(2559), _mm_mulhi_epu16(ab_cd, _mm_set1_epi16(6554))));
+    // the last digit that is not 0 (sig is not 0)
+    const auto nonzero = static_cast<std::uint64_t>(_mm_movemask_epi8(_mm_cmpgt_epi8(bytes, _mm_setzero_si128())));
+    const int digits = 63 - count_leading_zeros(nonzero) + (sixteen ? 1 : 0); // without trailing zeros
+    const __m128i chars = _mm_add_epi8(bytes, _mm_set1_epi8('0'));
+    // the 16 characters from the first digit
+    const __m128i s = sixteen ? chars : _mm_or_si128(_mm_srli_si128(chars, 1), _mm_slli_si128(_mm_cvtsi32_si128('0' + last), 15));
+    const char s16 = static_cast<char>(sixteen ? '0' + last : '0'); // the 17th
+    const auto store_16 = [&s](char* p) noexcept
+    {
+        std::memcpy(p, &s, 16);
+    };
+    const char first_digit = static_cast<char>(_mm_cvtsi128_si32(s));
+    // NOLINTEND(portability-simd-intrinsics)
+#elif JSON_DTOA_NEON
+    // as with SSE2: the halves in 32-bit lanes, then abcd, efgh of both
+    const uint32x2_t halves = vcreate_u32(upper | ((sig - (upper * 100000000u)) << 32u));
+    const uint32x2_t abcd = vmovn_u64(vshrq_n_u64(vmull_n_u32(halves, static_cast<std::uint32_t>(((std::uint64_t{1} << 40u) / 10000u) + 1u)), 40));
+    const uint32x2_t efgh = vmls_n_u32(halves, abcd, 10000u);
+    const uint32x4_t fours = vcombine_u32(vzip1_u32(abcd, efgh), vzip2_u32(abcd, efgh));
+    const uint32x4_t ab = vshrq_n_u32(vmulq_n_u32(fours, 5243u), 19);
+    const uint16x8_t ab_cd = vreinterpretq_u16_u32(vorrq_u32(ab, vshlq_n_u32(vmlsq_n_u32(fours, ab, 100u), 16)));
+    const uint16x8_t tens = vshrq_n_u16(vmulq_n_u16(ab_cd, 103u), 10);
+    const uint8x16_t bytes = vreinterpretq_u8_u16(vorrq_u16(tens, vshlq_n_u16(vmlsq_n_u16(ab_cd, tens, 10u), 8)));
+    // the last digit that is not 0 (sig is not 0): a nibble per byte
+    const std::uint64_t nonzero = vget_lane_u64(vreinterpret_u64_u8(vshrn_n_u16(vreinterpretq_u16_u8(vtstq_u8(bytes, bytes)), 4)), 0);
+    const int digits = ((63 - count_leading_zeros(nonzero)) / 4) + (sixteen ? 1 : 0); // without trailing zeros
+    const uint8x16_t chars = vaddq_u8(bytes, vdupq_n_u8('0'));
+    // the 16 characters from the first digit
+    const uint8x16_t s = sixteen ? chars : vextq_u8(chars, vdupq_n_u8(static_cast<std::uint8_t>('0' + last)), 1);
+    const char s16 = static_cast<char>(sixteen ? '0' + last : '0'); // the 17th
+    const auto store_16 = [&s](char* p) noexcept
+    {
+        vst1q_u8(reinterpret_cast<std::uint8_t*>(p), s); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
+    };
+    const auto first_digit = static_cast<char>(vgetq_lane_u8(s, 0));
+#else
+    const std::uint64_t hi = eight_digit_bytes(upper);
+    const std::uint64_t lo = eight_digit_bytes(sig - (upper * 100000000u));
+    // trailing zero digits: zero bytes (sig is not 0)
+    const int zeros = lo != 0 ? count_trailing_zeros(lo) / 8 : 8 + (count_trailing_zeros(hi) / 8);
+    const int digits = 15 - zeros + (sixteen ? 1 : 0); // without trailing zeros
+    // the 16 characters from the first digit
+    const std::uint64_t s_hi = (sixteen ? hi : (hi << 8u) | (lo >> 56u)) + 0x3030303030303030u;
+    const std::uint64_t s_lo = (sixteen ? lo : (lo << 8u) | static_cast<std::uint64_t>(last)) + 0x3030303030303030u;
+    const char s16 = static_cast<char>(sixteen ? '0' + last : '0'); // the 17th
+    const auto store_16 = [s_hi, s_lo](char* p) noexcept
+    {
+        store_msb_first(p, s_hi);
+        store_msb_first(p + 8, s_lo);
+    };
+    const auto first_digit = static_cast<char>(s_hi >> 56u);
+#endif
+    const int len = d.has_digit ? 16 + (sixteen ? 1 : 0) : digits; // significant digits
+    const int n = 16 + (sixteen ? 1 : 0) + d.exponent;           // digits before the point
+
+    if (JSON_HEDLEY_LIKELY(n >= 1 && n <= 15))
+    {
+        // "dig.its" and "digits[000].0": the digits after the point move by
+        // one byte ('0's follow the digits)
+#if JSON_DTOA_SSE2
+        // NOLINTBEGIN(portability-simd-intrinsics)
+        // (in the register: reading the digits back from memory right after
+        // storing them waits until the stores are done)
+        const __m128i at = _mm_set1_epi8(static_cast<char>(n));
+        const __m128i index = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
+        const __m128i before = _mm_cmpgt_epi8(at, index);
+        const __m128i after = _mm_cmpgt_epi8(index, at);
+        const __m128i text = _mm_or_si128(_mm_or_si128(_mm_and_si128(s, before), _mm_and_si128(_mm_slli_si128(s, 1), after)),
+                                          _mm_andnot_si128(_mm_or_si128(before, after), _mm_set1_epi8('.')));
+        std::memcpy(first, &text, 16);
+        first[16] = static_cast<char>(_mm_extract_epi16(s, 7) >> 8);
+        first[17] = s16;
+        // NOLINTEND(portability-simd-intrinsics)
+#elif JSON_DTOA_NEON
+        const uint8x16_t index = vcombine_u8(vcreate_u8(0x0706050403020100u), vcreate_u8(0x0F0E0D0C0B0A0908u));
+        const uint8x16_t at = vdupq_n_u8(static_cast<std::uint8_t>(n));
+        const uint8x16_t after_point = vbslq_u8(vcgtq_u8(index, at), vextq_u8(vdupq_n_u8(0), s, 15), vdupq_n_u8('.'));
+        vst1q_u8(reinterpret_cast<std::uint8_t*>(first), vbslq_u8(vcltq_u8(index, at), s, after_point)); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
+        first[16] = static_cast<char>(vgetq_lane_u8(s, 15));
+        first[17] = s16;
+#else
+        store_16(first);
+        first[16] = s16;
+        std::uint64_t after_point[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-pro-type-member-init,hicpp-member-init): written before read
+        std::memcpy(after_point, first + n, 16);
+        std::memcpy(first + n + 1, after_point, 16);
+        first[n] = '.';
+#endif
+        return first + (n >= len ? n + 2 : len + 1);
+    }
+    if (n <= 0 && n > -4)
+    {
+        // "0.[000]digits"
+        std::memset(first, '0', 8);
+        first[1] = '.';
+        store_16(first + 2 - n);
+        first[18 - n] = s16;
+        return first + 2 - n + len;
+    }
+    // d.igitse+XX, with at least two exponent digits (as append_exponent())
+    store_16(first + 1);
+    first[17] = s16;
+    first[0] = first_digit;
+    first[1] = '.';
+    char* const end = first + (len == 1 ? 1 : len + 1);
+    const int e = n - 1;
+    const auto ea = e < 0 ? 0u - static_cast<unsigned>(e) : static_cast<unsigned>(e); // (unsigned: no signed overflow to assume)
+    const bool three = ea >= 100;
+    end[0] = 'e';
+    end[1] = e < 0 ? '-' : '+';
+    end[2] = static_cast<char>('0' + (three ? ea / 100 : (ea / 10) % 10));
+    end[3] = static_cast<char>('0' + (three ? (ea / 10) % 10 : ea % 10));
+    end[4] = static_cast<char>('0' + (ea % 10));
+    return end + (three ? 5 : 4);
+}
+
+/*!
+@brief whether FloatType is an IEEE 754 binary64 type (a double, or a long double
+that has the same format, as with MSVC and on Apple's Arm CPUs)
+
+These are the types the conversion of Zmij (see zmij.hpp) is used for; all
+others (binary32, or a format the library does not know) use Grisu2.
+*/
+template<typename FloatType>
+constexpr bool has_binary64_format() noexcept
+{
+    return std::numeric_limits<FloatType>::is_iec559
+           && std::numeric_limits<FloatType>::digits == 53
+           && std::numeric_limits<FloatType>::max_exponent == 1024
+           && sizeof(FloatType) == sizeof(std::uint64_t);
+}
+
+template<typename FloatType>
+struct is_binary64 : std::integral_constant<bool, has_binary64_format<FloatType>()> {};
+
+/// a positive finite float (other than binary64): Grisu2 and format_buffer()
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* write_positive_grisu2(char* first, const char* last, FloatType value)
+{
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+    static_cast<void>(last); // (only used in the assertion)
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e., the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+/// a positive finite binary64 number: the shortest digits (Zmij), laid out by
+/// write_shortest() (through a local buffer if [first, last) is shorter than
+/// the 41 bytes it may write)
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* write_positive_zmij(char* first, const char* last, FloatType value)
+{
+    static_assert(is_binary64<FloatType>::value,
+                  "internal error: the conversion of Zmij needs IEEE 754 binary64 numbers");
+    std::uint64_t bits = 0;
+    std::memcpy(&bits, &value, sizeof(bits));
+    const zmij::shortest_decimal d = zmij::to_shortest(bits);
+    if (JSON_HEDLEY_LIKELY(last - first >= 41))
+    {
+        return write_shortest(first, d);
+    }
+    std::array<char, 64> buf; // NOLINT(cppcoreguidelines-pro-type-member-init,hicpp-member-init): written before read
+    const auto len = static_cast<std::size_t>(write_shortest(buf.data(), d) - buf.data());
+    JSON_ASSERT(last - first >= static_cast<std::ptrdiff_t>(len));
+    std::memcpy(first, buf.data(), len);
+    return first + len;
+}
+
+/// a positive finite binary64 number: Zmij (as a long double has the format of
+/// a double here, its bits are those of the double of the same value)
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* write_positive(char* first, const char* last, FloatType value, std::true_type /*is_binary64*/)
+{
+    return write_positive_zmij(first, last, value);
+}
+
+/// a positive finite float of any other format: Grisu2
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* write_positive(char* first, const char* last, FloatType value, std::false_type /*is_binary64*/)
+{
+    return write_positive_grisu2(first, last, value);
+}
+
+/// a positive finite float: Zmij for binary64 numbers, Grisu2 otherwise
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* write_positive(char* first, const char* last, FloatType value)
+{
+    return write_positive(first, last, value, is_binary64<FloatType> {});
+}
+
 }  // namespace dtoa_impl
 
 /*!
@@ -1064,7 +1461,6 @@ JSON_HEDLEY_NON_NULL(1, 2)
 JSON_HEDLEY_RETURNS_NON_NULL
 char* to_chars(char* first, const char* last, FloatType value)
 {
-    static_cast<void>(last); // maybe unused - fix warning
     JSON_ASSERT(std::isfinite(value));
 
     // Use signbit(value) instead of (value < 0) since signbit works for -0.
@@ -1090,28 +1486,7 @@ char* to_chars(char* first, const char* last, FloatType value)
     JSON_HEDLEY_DIAGNOSTIC_POP
 #endif
 
-    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
-
-    // Compute v = buffer * 10^decimal_exponent.
-    // The decimal digits are stored in the buffer, which needs to be interpreted
-    // as an unsigned decimal integer.
-    // len is the length of the buffer, i.e., the number of decimal digits.
-    int len = 0;
-    int decimal_exponent = 0;
-    dtoa_impl::grisu2(first, len, decimal_exponent, value);
-
-    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
-
-    // Format the buffer like printf("%.*g", prec, value)
-    constexpr int kMinExp = -4;
-    // Use digits10 here to increase compatibility with version 2.
-    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
-
-    JSON_ASSERT(last - first >= kMaxExp + 2);
-    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
-    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
-
-    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+    return dtoa_impl::write_positive(first, last, value);
 }
 
 }  // namespace detail

include/nlohmann/detail/conversions/to_json.hpp

@@ -414,13 +414,13 @@ inline void to_json(BasicJsonType& j, const EnumKeyedMap& map)
         BasicJsonType key = p.first;
         if (JSON_HEDLEY_UNLIKELY(!key.is_string()))
         {
-            JSON_THROW(type_error::create(302, concat("type must be string, but is ", key.type_name()), &key));
+            throw_type_must_be("string", key);
         }
 
         auto& key_string = *key.template get_ptr<typename BasicJsonType::string_t*>();
         if (JSON_HEDLEY_UNLIKELY(!obj.emplace(key_string, BasicJsonType(p.second)).second))
         {
-            JSON_THROW(type_error::create(318, concat("duplicate object key '", key_string, "'"), &key));
+            JSON_THROW(type_error::create(exception_id::enum_key_duplicate, concat("duplicate object key '", key_string, "'"), &key));
         }
     }
     external_constructor<value_t::object>::construct(j, std::move(obj));

include/nlohmann/detail/conversions/zmij.hpp

@@ -0,0 +1,219 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.12.0
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2025 Victor Zverovich <https://github.com/vitaut/zmij>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint32_t, uint64_t
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/bit_ops.hpp>
+#include <nlohmann/detail/input/pow5_table.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief the shortest decimal representation of a double
+
+A C++11 port of the conversion of Zmij by Victor Zverovich
+(https://github.com/vitaut/zmij, MIT license): the shortest decimal in the
+rounding interval of a double, the closest one if there are several. Zmij
+credits Xiang JunBo (producing the shorter candidate without a division) and
+Dougall Johnson (the compressed powers of ten). The powers of ten are taken
+from the table for number parsing (pow5_table.hpp) where it holds them, and
+computed from the compressed tables of Zmij beyond it.
+*/
+namespace zmij
+{
+
+/// the compressed powers of ten of Zmij
+inline const std::array<std::uint64_t, 28>& pow10_minor() noexcept
+{
+    static const std::array<std::uint64_t, 28> table =
+    {
+        {
+            0x8000000000000000u, 0xa000000000000000u, 0xc800000000000000u, 0xfa00000000000000u, 0x9c40000000000000u,
+            0xc350000000000000u, 0xf424000000000000u, 0x9896800000000000u, 0xbebc200000000000u, 0xee6b280000000000u,
+            0x9502f90000000000u, 0xba43b74000000000u, 0xe8d4a51000000000u, 0x9184e72a00000000u, 0xb5e620f480000000u,
+            0xe35fa931a0000000u, 0x8e1bc9bf04000000u, 0xb1a2bc2ec5000000u, 0xde0b6b3a76400000u, 0x8ac7230489e80000u,
+            0xad78ebc5ac620000u, 0xd8d726b7177a8000u, 0x878678326eac9000u, 0xa968163f0a57b400u, 0xd3c21bcecceda100u,
+            0x84595161401484a0u, 0xa56fa5b99019a5c8u, 0xcecb8f27f4200f3au
+        }
+    };
+    return table;
+}
+
+/// (high, low) pairs
+inline const std::array<std::uint64_t, 50>& pow10_major() noexcept
+{
+    static const std::array<std::uint64_t, 50> table =
+    {
+        {
+            0xaddcb9e83c6b1793u, 0xdf4abe242a1bbf3eu, 0xaf8e5410288e1b6fu, 0x07ecf0ae5ee44ddau, 0xb1442798f49ffb4au, 0x99cd11cfdf41779du,
+            0xb2fe3f0b8599ef07u, 0x861fa7e6dcb4aa15u, 0xb4bca50b065abe63u, 0x0fed077a756b53aau, 0xb67f6455292cbf08u, 0x1a3bc84c17b1d543u,
+            0xb84687c269ef3bfbu, 0x3d5d514f40eea742u, 0xba121a4650e4ddebu, 0x92f34d62616ce413u, 0xbbe226efb628afeau, 0x890489f70a55368cu,
+            0xbdb6b8e905cb600fu, 0x5400e987bbc1c921u, 0xbf8fdb78849a5f96u, 0xde98520472bdd034u, 0xc16d9a0095928a27u, 0x75b7053c0f178294u,
+            0xc350000000000000u, 0x0000000000000000u, 0xc5371912364ce305u, 0x6c28000000000000u, 0xc722f0ef9d80aad6u, 0x424d3ad2b7b97ef6u,
+            0xc913936dd571c84cu, 0x03bc3a19cd1e38eau, 0xcb090c8001ab551cu, 0x5cadf5bfd3072cc6u, 0xcd036837130890a1u, 0x36dba887c37a8c10u,
+            0xcf02b2c21207ef2eu, 0x94f967e45e03f4bcu, 0xd106f86e69d785c7u, 0xe13336d701beba52u, 0xd31045a8341ca07cu, 0x1ede48111209a051u,
+            0xd51ea6fa85785631u, 0x552a74227f3ea566u, 0xd732290fbacaf133u, 0xa97c177947ad4096u, 0xd94ad8b1c7380874u, 0x18375281ae7822bdu,
+            0xdb68c2ca82ed2a05u, 0xa67398db9f6820e1u
+        }
+    };
+    return table;
+}
+
+/// one bit per power: whether the computed value is one unit too large
+inline const std::array<std::uint32_t, 21>& pow10_fixups() noexcept
+{
+    static const std::array<std::uint32_t, 21> table =
+    {
+        {
+            0x8d8fc810u, 0x06100293u, 0x19000000u, 0x00100000u, 0x00000908u, 0x00000000u, 0x04e00300u, 0x3807e0b2u, 0x3d83d793u, 0x0006f5ccu,
+            0x00000000u, 0xffff0000u, 0x8076337du, 0x4ff45ba0u, 0x09405033u, 0x034376d9u, 0x09000000u, 0x4e100501u, 0x076d14dcu, 0xf964f45eu,
+            0x0000003du
+        }
+    };
+    return table;
+}
+
+/// the 128-bit significand of 10^k, rounded down, for k in [-307, 341]
+/// (compute_pow10 of Zmij)
+inline uint128_parts compute_pow10(int k) noexcept
+{
+    const auto i = static_cast<unsigned>(k + 307);
+    const std::uint64_t m = pow10_minor()[(i + 24) % 28];
+    const std::size_t j = 2 * static_cast<std::size_t>((i + 24) / 28);
+    const std::uint64_t h_hi = pow10_major()[j];
+    const std::uint64_t h_lo = pow10_major()[j + 1];
+    const std::uint64_t h1 = full_multiplication(h_lo, m).high;
+    const std::uint64_t c0 = h_lo * m;
+    const std::uint64_t c1 = h1 + (h_hi * m);
+    const std::uint64_t c2 = (c1 < h1 ? 1u : 0u) + full_multiplication(h_hi, m).high;
+    uint128_parts r{};
+    if ((c2 >> 63u) != 0)
+    {
+        r.high = c2;
+        r.low = c1;
+    }
+    else
+    {
+        r.high = (c2 << 1u) | (c1 >> 63u);
+        r.low = (c1 << 1u) | (c0 >> 63u);
+    }
+    r.low -= (pow10_fixups()[i >> 5u] >> (i & 31u)) & 1u;
+    return r;
+}
+
+/// The 128-bit significand of 10^k, rounded down, for k in [-342, 341].
+/// Up to 10^308, the table for number parsing holds the same significands
+/// (those of 5^k), except for k in [-27, -1], where it holds them one unit
+/// larger (as the Eisel-Lemire algorithm needs them).
+inline uint128_parts pow10(int k) noexcept
+{
+    if (k > pow5_128_largest_power)
+    {
+        return compute_pow10(k); // (only for the smallest doubles)
+    }
+    const auto i = 2 * static_cast<std::size_t>(k - pow5_128_smallest_power);
+    uint128_parts r{pow5_128()[i + 1], pow5_128()[i]};
+    const std::uint64_t adjust = static_cast<unsigned>(k + 27) < 27u ? 1u : 0u;
+    r.high -= r.low < adjust ? 1u : 0u;
+    r.low -= adjust;
+    return r;
+}
+
+/// (x_hi * 2^64 + x_lo) * y >> 64, as 128 bits
+inline uint128_parts umul192_hi128(std::uint64_t x_hi, std::uint64_t x_lo, std::uint64_t y) noexcept
+{
+    const uint128_parts p = full_multiplication(x_hi, y);
+    uint128_parts r{};
+    r.low = p.low + full_multiplication(x_lo, y).high;
+    r.high = p.high + (r.low < p.low ? 1u : 0u);
+    return r;
+}
+
+/// (x * y + c) >> 64
+inline std::uint64_t umul128_add_hi64(std::uint64_t x, std::uint64_t y, std::uint64_t c) noexcept
+{
+    const uint128_parts p = full_multiplication(x, y);
+    return p.high + (p.low + c < p.low ? 1u : 0u);
+}
+
+/// the result of Zmij: the shorter candidate and, if that is outside the
+/// rounding interval, the digit after it (16 bytes: returned in registers)
+struct shortest_decimal
+{
+    std::uint64_t integral;  ///< the shorter candidate (15 or 16 digits for normal doubles)
+    int exponent;            ///< the decimal exponent of the digit after it
+    unsigned char digit;     ///< the digit after it (if has_digit)
+    bool has_digit;          ///< whether the shortest decimal is integral * 10 + digit
+};
+
+/// The shortest decimal in the rounding interval of a positive finite double
+/// given by its bits, the closest one if there are several (to_decimal of
+/// Zmij, which keeps the last digit apart: the 15 or 16 digits before it can be
+/// converted without a multiplication by 10 first). Always inlined: GCC
+/// otherwise calls it, and its result goes through memory.
+JSON_HEDLEY_ALWAYS_INLINE shortest_decimal to_shortest(std::uint64_t bits) noexcept
+{
+    constexpr int extra_shift = 9;
+    const auto raw_exp = static_cast<int>((bits >> 52u) & 0x7FFu);
+    std::uint64_t bin_sig = bits & ((std::uint64_t{1} << 52u) - 1);
+    // a power of two has a narrower interval below (except the smallest normal)
+    const bool regular = bin_sig != 0 || raw_exp <= 1;
+    const int bin_exp = (raw_exp == 0 ? 1 : raw_exp) - 1075;
+    if (raw_exp != 0)
+    {
+        bin_sig |= std::uint64_t{1} << 52u;
+    }
+    // floor(log10(2^bin_exp)), or floor(log10(3/4 * 2^bin_exp)) for the irregular case
+    const int dec_exp = ((bin_exp * 315653) - (regular ? 0 : 131072)) >> 20;
+    // scaled by 10^(-dec_exp - 1): the integral part is the shorter candidate
+    const int shift = bin_exp + ((-(dec_exp + 1) * 217707) >> 16) + 1 + extra_shift;
+    const uint128_parts p10 = pow10(-dec_exp - 1);
+    const uint128_parts p = umul192_hi128(p10.high, p10.low, bin_sig << static_cast<unsigned>(shift));
+    std::uint64_t integral = p.high >> static_cast<unsigned>(extra_shift);
+    const std::uint64_t fractional = (p.high << static_cast<unsigned>(64 - extra_shift)) | (p.low >> static_cast<unsigned>(extra_shift));
+    std::uint64_t digit = 0;
+    bool round_up = false;
+    bool round_down = false;
+    if (JSON_HEDLEY_LIKELY(regular))
+    {
+        const std::uint64_t half_ulp = (p10.high >> static_cast<unsigned>(extra_shift + 1 - shift)) + (1 - (bin_sig & 1u));
+        round_up = fractional + half_ulp < fractional;
+        round_down = half_ulp > fractional;
+        // the last digit of the longer candidate, rounded to nearest
+        digit = umul128_add_hi64(fractional, 10, (std::uint64_t{1} << 63u) + 6);
+        if (fractional == (std::uint64_t{1} << 62u))
+        {
+            digit = 2; // 2.5 rounds to 2
+        }
+    }
+    else
+    {
+        const std::uint64_t half_ulp = p10.high >> static_cast<unsigned>(extra_shift + 1 - shift);
+        round_up = half_ulp > ~std::uint64_t{0} - fractional;
+        round_down = (half_ulp >> 1u) > fractional;
+        digit = umul128_add_hi64(fractional, 10, (std::uint64_t{1} << 63u) - 1);
+        const std::uint64_t lowest = umul128_add_hi64(fractional - (half_ulp >> 1u), 10, ~std::uint64_t{0});
+        digit = digit < lowest ? lowest : digit;
+    }
+    integral += round_up ? 1u : 0u;
+    // if the shorter candidate is outside the rounding interval: one digit more
+    return shortest_decimal{integral, dec_exp, static_cast<unsigned char>(digit), !round_up && !round_down};
+}
+
+}  // namespace zmij
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/exceptions.hpp

@@ -45,6 +45,84 @@ namespace detail
 // exceptions //
 ////////////////
 
+/*!
+@brief the ids of the exceptions thrown by the library
+@note The values are part of the public API: they are the `id` member of the
+      exceptions and appear in their `what()` messages.
+@sa https://json.nlohmann.me/home/exceptions/
+*/
+enum class exception_id : int
+{
+    // parse_error
+    syntax_error = 101, ///< unexpected token or invalid literal while parsing JSON
+    patch_not_an_array = 104, ///< a JSON Patch document is not an array of objects
+    patch_invalid_operation = 105, ///< a JSON Patch operation is malformed
+    pointer_index_leading_zero = 106, ///< a JSON Pointer array index has a leading zero
+    pointer_missing_slash = 107, ///< a JSON Pointer does not start with '/'
+    pointer_invalid_escape = 108, ///< a JSON Pointer contains an escape other than ~0 and ~1
+    pointer_index_not_a_number = 109, ///< a JSON Pointer array index is not a number
+    unexpected_end_of_input = 110, ///< a binary input ends early, or has bytes left at its end
+    unexpected_byte = 112, ///< a binary input contains an unexpected byte or invalid length
+    invalid_string_or_size = 113, ///< a binary input contains an invalid string or size specification
+    bson_unsupported_type = 114, ///< a BSON record type is not supported
+    invalid_high_precision_number = 115, ///< a UBJSON/BJData high-precision number cannot be parsed
+    // invalid_iterator
+    iterators_incompatible = 201, ///< the iterators of a range belong to different values
+    iterator_from_other_value = 202, ///< an iterator does not belong to the value it is used with
+    iterator_range_from_other_value = 203, ///< an iterator range does not belong to the value it is used with
+    iterator_range_out_of_range = 204, ///< an iterator range of a primitive value is not [begin, end)
+    iterator_out_of_range = 205, ///< an iterator of a primitive value is not begin()
+    iterator_range_of_null = 206, ///< an iterator range belongs to a null value
+    iterator_key_not_object = 207, ///< key() is called on an iterator of a non-object
+    iterator_subscript_on_object = 208, ///< operator[] is called on an iterator of an object
+    iterator_arithmetic_on_object = 209, ///< an offset operator is used on an iterator of an object
+    insert_range_incompatible = 210, ///< the iterators of an inserted range belong to different values
+    insert_range_into_itself = 211, ///< an inserted range belongs to the value it is inserted into
+    iterators_compare_different_values = 212, ///< iterators of different values are compared
+    iterator_order_on_object = 213, ///< iterators of an object are compared by order
+    iterator_value_unavailable = 214, ///< an iterator does not refer to a value
+    // type_error
+    object_from_non_pairs = 301, ///< an object is created from an initializer list that is not a list of pairs
+    type_mismatch = 302, ///< a value has the wrong type for a conversion
+    incompatible_reference_type = 303, ///< get_ref() is called with a reference type that does not match the value
+    at_wrong_type = 304, ///< at() is called on a value of the wrong type
+    subscript_wrong_type = 305, ///< operator[] is called on a value of the wrong type
+    value_wrong_type = 306, ///< value() is called on a value of the wrong type
+    erase_wrong_type = 307, ///< erase() is called on a value of the wrong type
+    push_back_wrong_type = 308, ///< push_back() or operator+= is called on a value of the wrong type
+    insert_wrong_type = 309, ///< insert() is called on a value of the wrong type
+    swap_wrong_type = 310, ///< swap() is called on a value of the wrong type
+    emplace_wrong_type = 311, ///< emplace() or emplace_back() is called on a value of the wrong type
+    update_wrong_type = 312, ///< update() is called on a value of the wrong type
+    unflatten_invalid_value = 313, ///< unflatten() finds conflicting paths
+    unflatten_not_object = 314, ///< unflatten() is called on a non-object
+    unflatten_value_not_primitive = 315, ///< unflatten() is called on an object with non-primitive values
+    invalid_utf8 = 316, ///< dump() finds a string that is not valid UTF-8
+    type_not_serializable = 317, ///< a value cannot be serialized to the requested binary format
+    enum_key_duplicate = 318, ///< an enum-keyed map has two keys that serialize to the same string
+    discarded_value_used = 321, ///< a discarded value is used
+    // out_of_range
+    array_index_out_of_range = 401, ///< an array index is out of range
+    pointer_past_the_end_index = 402, ///< a JSON Pointer uses the array index '-'
+    key_not_found = 403, ///< an object key is not found
+    pointer_unresolved = 404, ///< a JSON Pointer reference token cannot be resolved
+    patch_on_root = 405, ///< the root of a value has no parent, e.g. for a JSON Patch 'remove' or 'add' at the root
+    number_overflow = 406, ///< a number cannot be stored without overflowing to NaN or INF
+    integer_too_large = 407, ///< an integer cannot be represented in the binary format
+    container_too_large = 408, ///< the size of a container in a binary input exceeds the maximal capacity
+    bson_key_with_null = 409, ///< a BSON key contains U+0000
+    value_out_of_range = 410, ///< an enum value is undefined, or a JSON Pointer array index exceeds size_type
+    patch_add_parent_not_container = 411, ///< the parent of a JSON Patch 'add' target is not a container
+    length_too_large = 412, ///< a length does not fit into the length field of a binary format
+    patch_remove_parent_not_container = 413, ///< the parent of a JSON Patch 'remove' target is not a container
+    patch_move_into_child = 414, ///< a JSON Patch 'move' moves a value into one of its children
+    subtype_out_of_range = 415, ///< a binary subtype does not fit into one byte
+    // other_error
+    internal_error = 500, ///< unreachable code was reached
+    patch_test_failed = 501, ///< a JSON Patch 'test' operation failed
+    size_marker_required = 502  ///< UBJSON/BJData output with type markers requires size markers
+};
+
 /// @brief general exception of the @ref basic_json class
 /// @sa https://json.nlohmann.me/api/basic_json/exception/
 class exception : public std::exception
@@ -195,6 +273,18 @@ class parse_error : public exception
         return {id_, byte_, w.c_str()};
     }
 
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(exception_id id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), pos, what_arg, context);
+    }
+
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(exception_id id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), byte_, what_arg, context);
+    }
+
     /*!
     @brief byte index of the parse error
 
@@ -229,6 +319,12 @@ class invalid_iterator : public exception
         return {id_, w.c_str()};
     }
 
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static invalid_iterator create(exception_id id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), what_arg, context);
+    }
+
   private:
     JSON_HEDLEY_NON_NULL(3)
     invalid_iterator(int id_, const char* what_arg)
@@ -247,6 +343,12 @@ class type_error : public exception
         return {id_, w.c_str()};
     }
 
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static type_error create(exception_id id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), what_arg, context);
+    }
+
   private:
     JSON_HEDLEY_NON_NULL(3)
     type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
@@ -264,6 +366,12 @@ class out_of_range : public exception
         return {id_, w.c_str()};
     }
 
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static out_of_range create(exception_id id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), what_arg, context);
+    }
+
   private:
     JSON_HEDLEY_NON_NULL(3)
     out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
@@ -281,6 +389,12 @@ class other_error : public exception
         return {id_, w.c_str()};
     }
 
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static other_error create(exception_id id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        return create(static_cast<int>(id_), what_arg, context);
+    }
+
   private:
     JSON_HEDLEY_NON_NULL(3)
     other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
@@ -307,6 +421,36 @@ void templated_json_throw(ExceptionType exception)
     (void)exception;
 }
 
+/*!
+@brief throws because @a j does not have the type a conversion expects
+@param[in] expected  the expected type(s), e.g. "array" or "binary or array"
+@param[in] j         the value with the wrong type
+@throw type_error.302 always
+*/
+template<typename BasicJsonType>
+JSON_HEDLEY_NO_RETURN inline void throw_type_must_be(const char* expected, const BasicJsonType& j)
+{
+    static_cast<void>(expected); // unused when JSON_NOEXCEPTION is defined
+    static_cast<void>(j);
+    JSON_THROW(type_error::create(exception_id::type_mismatch, concat("type must be ", expected, ", but is ", j.type_name()), &j));
+}
+
+/*!
+@brief throws because an operation is not supported for the type of @a j
+@param[in] id_        the id of the type_error exception (at_wrong_type..update_wrong_type)
+@param[in] operation  the operation, e.g. "erase()"
+@param[in] j          the value the operation was called on
+@throw type_error always
+*/
+template<typename BasicJsonType>
+JSON_HEDLEY_NO_RETURN inline void throw_cannot_use_with(const exception_id id_, const char* operation, const BasicJsonType& j)
+{
+    static_cast<void>(id_); // unused when JSON_NOEXCEPTION is defined
+    static_cast<void>(operation);
+    static_cast<void>(j);
+    JSON_THROW(type_error::create(id_, concat("cannot use ", operation, " with ", j.type_name()), &j));
+}
+
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END
 

include/nlohmann/detail/input/binary_reader.hpp

@@ -12,7 +12,6 @@
 #include <cmath> // ldexp
 #include <cstddef> // size_t
 #include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t, uintmax_t
-#include <cstdio> // snprintf
 #include <cstring> // memcpy
 #include <iterator> // back_inserter
 #include <limits> // numeric_limits
@@ -196,8 +195,7 @@ class binary_reader
 
             if (JSON_HEDLEY_UNLIKELY(current != char_traits<char_type>::eof()))
             {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
-                                        exception_message(concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
+                return last_byte_error(exception_id::unexpected_end_of_input, concat("expected end of input; last byte: 0x", get_token_string()), "value");
             }
         }
 
@@ -319,8 +317,7 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(document_size < 0 || static_cast<std::size_t>(document_size) != chars_read - document_start))
         {
-            return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
-                                    exception_message(concat("document size ", std::to_string(document_size), " does not match the number of bytes read (", std::to_string(chars_read - document_start), ")"), "document"), nullptr));
+            return last_byte_error(exception_id::unexpected_byte, concat("document size ", std::to_string(document_size), " does not match the number of bytes read (", std::to_string(chars_read - document_start), ")"), "document");
         }
         return true;
     }
@@ -512,9 +509,7 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(len < 1))
         {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message(concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
+            return last_byte_error(exception_id::unexpected_byte, concat("string length must be at least 1, is ", std::to_string(len)), "string");
         }
 
         if (JSON_HEDLEY_UNLIKELY(!get_string(len - static_cast<NumberType>(1), result)))
@@ -524,10 +519,7 @@ class binary_reader
 
         if (JSON_HEDLEY_UNLIKELY(get() != 0x00))
         {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message("BSON string is not null-terminated",
-                                            "string"), nullptr));
+            return last_byte_error(exception_id::unexpected_byte, "BSON string is not null-terminated", "string");
         }
 
         return check_string_utf8(result, "string");
@@ -547,9 +539,7 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(len < 0))
         {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message(concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
+            return last_byte_error(exception_id::unexpected_byte, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary");
         }
 
         // All BSON binary values have a subtype
@@ -639,11 +629,9 @@ class binary_reader
 
             default: // anything else is not supported (yet)
             {
-                std::array<char, 3> cr{{}};
-                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                const std::string cr_str{cr.data()};
+                const std::string cr_str = hex_byte(static_cast<std::uint8_t>(element_type));
                 return sax->parse_error(element_type_parse_position, cr_str,
-                                        parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
+                                        parse_error::create(exception_id::bson_unsupported_type, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
             }
         }
     }
@@ -967,9 +955,7 @@ class binary_reader
             {
                 if (tag_handler == cbor_tag_handler_t::error)
                 {
-                    auto last_token = get_token_string();
-                    return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                            exception_message(concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    return unexpected_byte("invalid byte", "value");
                 }
 
                 // ignore and store: the tag value is already in the head, so
@@ -989,9 +975,7 @@ class binary_reader
                 {
                     case cbor_tag_handler_t::error:
                     {
-                        auto last_token = get_token_string();
-                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                                exception_message(concat("invalid byte: 0x", last_token), "value"), nullptr));
+                        return unexpected_byte("invalid byte", "value");
                     }
 
                     case cbor_tag_handler_t::ignore:
@@ -1065,9 +1049,7 @@ class binary_reader
 
             default: // anything else (0xFF is handled inside the other types)
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(concat("invalid byte: 0x", last_token), "value"), nullptr));
+                return unexpected_byte("invalid byte", "value");
             }
         }
     }
@@ -1080,10 +1062,7 @@ class binary_reader
     */
     bool cbor_indefinite_string_error(const char* type_name, const char* context)
     {
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                exception_message(concat("indefinite-length ", type_name,
-                                        " is not allowed inside indefinite-length ", type_name, "; last byte: 0x", last_token), context), nullptr));
+        return last_byte_error(exception_id::invalid_string_or_size, concat("indefinite-length ", type_name, " is not allowed inside indefinite-length ", type_name, "; last byte: 0x", get_token_string()), context);
     }
 
     /*!
@@ -1160,9 +1139,7 @@ class binary_reader
 
             default:
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(concat("expected length specification (0x60-0x7B)", inside_indefinite ? "" : " or indefinite string type (0x7F)", "; last byte: 0x", last_token), "string"), nullptr));
+                return last_byte_error(exception_id::invalid_string_or_size, concat("expected length specification (0x60-0x7B)", inside_indefinite ? "" : " or indefinite string type (0x7F)", "; last byte: 0x", get_token_string()), "string");
             }
         }
     }
@@ -1292,9 +1269,7 @@ class binary_reader
                 break;
         }
 
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                exception_message(concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
+        return last_byte_error(exception_id::invalid_string_or_size, concat("only string keys are supported, but found ", found, "; last byte: 0x", get_token_string()), "object key");
     }
 
     /*!
@@ -1375,9 +1350,7 @@ class binary_reader
 
             default:
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(concat("expected length specification (0x40-0x5B)", inside_indefinite ? "" : " or indefinite binary array type (0x5F)", "; last byte: 0x", last_token), "binary"), nullptr));
+                return last_byte_error(exception_id::invalid_string_or_size, concat("expected length specification (0x40-0x5B)", inside_indefinite ? "" : " or indefinite binary array type (0x5F)", "; last byte: 0x", get_token_string()), "binary");
             }
         }
     }
@@ -1523,7 +1496,7 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(!value_in_range_of<std::size_t>(len) || len == detail::unknown_size()))
         {
-            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large,
                                     exception_message(concat("excessive ", context, " size"), "size"), nullptr));
         }
         result = conditional_static_cast<std::size_t>(len);
@@ -2011,9 +1984,7 @@ class binary_reader
 
             default: // anything else
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(concat("invalid byte: 0x", last_token), "value"), nullptr));
+                return unexpected_byte("invalid byte", "value");
             }
         }
     }
@@ -2094,9 +2065,7 @@ class binary_reader
 
             default:
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
+                return last_byte_error(exception_id::invalid_string_or_size, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", get_token_string()), "string");
             }
         }
     }
@@ -2188,9 +2157,7 @@ class binary_reader
                 break;
         }
 
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                exception_message(concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
+        return last_byte_error(exception_id::invalid_string_or_size, concat("only string keys are supported, but found ", found, "; last byte: 0x", get_token_string()), "object key");
     }
 
     /*!
@@ -2499,8 +2466,7 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(len < 0))
         {
-            return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                    exception_message("string length must not be negative", "string"), nullptr));
+            return last_byte_error(exception_id::invalid_string_or_size, "string length must not be negative", "string");
         }
         return true;
     }
@@ -2600,18 +2566,7 @@ class binary_reader
             default:
                 break;
         }
-        auto last_token = get_token_string();
-        std::string message;
-
-        if (input_format != input_format_t::bjdata)
-        {
-            message = "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token;
-        }
-        else
-        {
-            message = "expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x" + last_token;
-        }
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(message, "string"), nullptr));
+        return length_type_error("", "string");
     }
 
     /*!
@@ -2696,12 +2651,11 @@ class binary_reader
         }
         if (JSON_HEDLEY_UNLIKELY(number < 0))
         {
-            return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                    exception_message("count in an optimized container must be positive", "size"), nullptr));
+            return last_byte_error(exception_id::invalid_string_or_size, "count in an optimized container must be positive", "size");
         }
         if (JSON_HEDLEY_UNLIKELY(!value_in_range_of<std::size_t>(number)))
         {
-            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large,
                                     exception_message("integer value overflow", "size"), nullptr));
         }
         result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
@@ -2799,7 +2753,7 @@ class binary_reader
                 }
                 if (!value_in_range_of<std::size_t>(number))
                 {
-                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large,
                                             exception_message("integer value overflow", "size"), nullptr));
                 }
                 result = detail::conditional_static_cast<std::size_t>(number);
@@ -2814,7 +2768,7 @@ class binary_reader
                 }
                 if (is_ndarray) // ndarray dimensional vector can only contain integers and cannot embed another array
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message("ndarray dimensional vector is not allowed", "size"), nullptr));
+                    return last_byte_error(exception_id::invalid_string_or_size, "ndarray dimensional vector is not allowed", "size");
                 }
                 std::vector<size_t> dim;
                 if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
@@ -2850,9 +2804,7 @@ class binary_reader
                         const char* type_name = bjd_type_name(ndarray_dtype);
                         if (JSON_HEDLEY_UNLIKELY(type_name == nullptr))
                         {
-                            auto last_token = get_token_string();
-                            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                                    exception_message("invalid byte: 0x" + last_token, "type"), nullptr));
+                            return unexpected_byte("invalid byte", "type");
                         }
 
                         string_t type_key = "_ArrayType_";
@@ -2880,7 +2832,7 @@ class binary_reader
                         // or SIZE_MAX.
                         if (JSON_HEDLEY_UNLIKELY(result > (std::numeric_limits<std::size_t>::max)() / i))
                         {
-                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message("excessive ndarray size caused overflow", "size"), nullptr));
+                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large, exception_message("excessive ndarray size caused overflow", "size"), nullptr));
                         }
                         result *= i;
                         // the pre-check above already rules out result becoming 0
@@ -2889,7 +2841,7 @@ class binary_reader
                         // unknown-size container (see get_ubjson_size_type())
                         if (result == npos)
                         {
-                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message("excessive ndarray size caused overflow", "size"), nullptr));
+                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large, exception_message("excessive ndarray size caused overflow", "size"), nullptr));
                         }
                         if (JSON_HEDLEY_UNLIKELY(!emit_unsigned(i)))
                         {
@@ -2906,18 +2858,7 @@ class binary_reader
             default:
                 break;
         }
-        auto last_token = get_token_string();
-        std::string message;
-
-        if (input_format != input_format_t::bjdata)
-        {
-            message = "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token;
-        }
-        else
-        {
-            message = "expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x" + last_token;
-        }
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(message, "size"), nullptr));
+        return length_type_error(" after '#'", "size");
     }
 
     /*!
@@ -2950,9 +2891,7 @@ class binary_reader
             if (input_format == input_format_t::bjdata
                     && JSON_HEDLEY_UNLIKELY(is_bjd_excluded_optimized_type(result.second)))
             {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
+                return last_byte_error(exception_id::unexpected_byte, concat("marker 0x", get_token_string(), " is not a permitted optimized array type"), "type");
             }
 
             if (JSON_HEDLEY_UNLIKELY(!unexpect_eof("type")))
@@ -2967,9 +2906,7 @@ class binary_reader
                 {
                     return false;
                 }
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
+                return last_byte_error(exception_id::unexpected_byte, concat("expected '#' after type information; last byte: 0x", get_token_string()), "size");
             }
 
             const bool is_error = get_ubjson_size_value(result.first, is_ndarray, 0, result.second);
@@ -2988,8 +2925,7 @@ class binary_reader
             const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
             if (input_format == input_format_t::bjdata && is_ndarray && !inside_ndarray)
             {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
-                                        exception_message("ndarray requires both type and size", "size"), nullptr));
+                return last_byte_error(exception_id::unexpected_byte, "ndarray requires both type and size", "size");
             }
             return is_error;
         }
@@ -3121,9 +3057,7 @@ class binary_reader
                 }
                 if (JSON_HEDLEY_UNLIKELY(current > 127))
                 {
-                    auto last_token = get_token_string();
-                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                            exception_message(concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
+                    return last_byte_error(exception_id::invalid_string_or_size, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", get_token_string()), "char");
                 }
                 string_t s(1, static_cast<typename string_t::value_type>(current));
                 return sax->string(s);
@@ -3144,8 +3078,7 @@ class binary_reader
             default: // anything else
                 break;
         }
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message("invalid byte: 0x" + last_token, "value"), nullptr));
+        return unexpected_byte("invalid byte", "value");
     }
 
     /*!
@@ -3208,7 +3141,7 @@ class binary_reader
             if (JSON_HEDLEY_UNLIKELY((size_and_type.second == 'Z' || size_and_type.second == 'T' || size_and_type.second == 'F')
                                      && size_and_type.first > max_valueless_container_size))
             {
-                return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                return sax->parse_error(chars_read, get_token_string(), out_of_range::create(exception_id::container_too_large,
                                         exception_message("excessive array size", "size"), nullptr));
             }
 
@@ -3244,9 +3177,7 @@ class binary_reader
         // do not accept ND-array size in objects in BJData
         if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
         {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message("BJData object does not support ND-array size in optimized format", "object"), nullptr));
+            return last_byte_error(exception_id::unexpected_byte, "BJData object does not support ND-array size in optimized format", "object");
         }
 
         if (size_and_type.first != npos)
@@ -3283,7 +3214,7 @@ class binary_reader
             // the lexer would stop at a NUL and accept the digits before it
             if (JSON_HEDLEY_UNLIKELY(current == '\0'))
             {
-                return sax->parse_error(chars_read, "00", parse_error::create(115, chars_read,
+                return sax->parse_error(chars_read, "00", parse_error::create(exception_id::invalid_high_precision_number, chars_read,
                                         exception_message("invalid number text; last byte: 0x00", "high-precision number"), nullptr));
             }
             number_vector.push_back(static_cast<char>(current));
@@ -3300,7 +3231,7 @@ class binary_reader
 
         if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
         {
-            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+            return sax->parse_error(chars_read, number_string, parse_error::create(exception_id::invalid_high_precision_number, chars_read,
                                     exception_message(concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
         }
 
@@ -3318,7 +3249,7 @@ class binary_reader
                     return sax->parse_error(
                                chars_read,
                                number_string,
-                               out_of_range::create(406, concat("number overflow parsing '", number_string, '\''), nullptr));
+                               out_of_range::create(exception_id::number_overflow, concat("number overflow parsing '", number_string, '\''), nullptr));
                 }
                 // number_string is a std::string, while the SAX interface takes a
                 // string_t; convert explicitly, as the two are only implicitly
@@ -3340,7 +3271,7 @@ class binary_reader
             case token_type::end_of_input:
             case token_type::literal_or_value:
             default:
-                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                return sax->parse_error(chars_read, number_string, parse_error::create(exception_id::invalid_high_precision_number, chars_read,
                                         exception_message(concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
         }
     }
@@ -3399,20 +3330,6 @@ class binary_reader
         return 0x80 <= c && c <= 0xBF;
     }
 
-    /*!
-    @brief report a parse error at the last read byte
-
-    @param[in] detail   a detailed error message
-    @param[in] context  further context information
-    @return false
-    */
-    bool bon8_error(const std::string& detail, const char* context)
-    {
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                exception_message(concat(detail, ": 0x", last_token), context), nullptr));
-    }
-
     /*!
     @brief read a BON8 value and everything nested inside it
 
@@ -3628,7 +3545,7 @@ class binary_reader
         }
 
         // 0xFE: end of container where a value is expected
-        return bon8_error("invalid byte", "value");
+        return unexpected_byte("invalid byte", "value");
     }
 
     /*!
@@ -3755,7 +3672,7 @@ class binary_reader
             current = byte;
         }
 
-        return bon8_error("expected a string; last byte", "key");
+        return unexpected_byte("expected a string; last byte", "key");
     }
 
     /*!
@@ -3878,7 +3795,7 @@ class binary_reader
 
             if (JSON_HEDLEY_UNLIKELY(!valid_second))
             {
-                return bon8_error("invalid UTF-8 byte", "string");
+                return unexpected_byte("invalid UTF-8 byte", "string");
             }
 
             result.push_back(static_cast<typename string_t::value_type>(byte));
@@ -3892,7 +3809,7 @@ class binary_reader
                 }
                 if (JSON_HEDLEY_UNLIKELY(!is_bon8_continuation(current)))
                 {
-                    return bon8_error("invalid UTF-8 byte", "string");
+                    return unexpected_byte("invalid UTF-8 byte", "string");
                 }
                 result.push_back(static_cast<typename string_t::value_type>(current));
             }
@@ -3937,7 +3854,7 @@ class binary_reader
         {
             // in case of failure, advance position by 1 to report the failing location
             ++chars_read;
-            sax->parse_error(chars_read, "<end of file>", parse_error::create(110, chars_read, exception_message("unexpected end of input", context), nullptr));
+            sax->parse_error(chars_read, "<end of file>", parse_error::create(exception_id::unexpected_end_of_input, chars_read, exception_message("unexpected end of input", context), nullptr));
             return false;
         }
         return true;
@@ -4091,7 +4008,7 @@ class binary_reader
         if (JSON_HEDLEY_UNLIKELY(std::isfinite(number) && !std::isfinite(result)))
         {
             return sax->parse_error(chars_read, get_token_string(),
-                                    out_of_range::create(406, exception_message("number overflow", "value"), nullptr));
+                                    out_of_range::create(exception_id::number_overflow, exception_message("number overflow", "value"), nullptr));
         }
         return sax->number_float(result, "");
     }
@@ -4211,9 +4128,7 @@ class binary_reader
 
         if (error_handler == error_handler_t::strict)
         {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                    exception_message("invalid string: ill-formed UTF-8 byte", context), nullptr));
+            return last_byte_error(exception_id::invalid_string_or_size, "invalid string: ill-formed UTF-8 byte", context);
         }
 
         result = sanitize_utf8(result, error_handler);
@@ -4309,19 +4224,53 @@ class binary_reader
         if (JSON_HEDLEY_UNLIKELY(current == char_traits<char_type>::eof()))
         {
             return sax->parse_error(chars_read, "<end of file>",
-                                    parse_error::create(110, chars_read, exception_message("unexpected end of input", context), nullptr));
+                                    parse_error::create(exception_id::unexpected_end_of_input, chars_read, exception_message("unexpected end of input", context), nullptr));
         }
         return true;
     }
 
+    /*!
+    @brief reports a parse error at the last read byte
+    @param[in] id_      the id of the parse_error exception
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return the result of the SAX parser's parse_error()
+    */
+    bool last_byte_error(const exception_id id_, const std::string& detail, const std::string& context) const
+    {
+        return sax->parse_error(chars_read, get_token_string(), parse_error::create(id_, chars_read, exception_message(detail, context), nullptr));
+    }
+
+    /*!
+    @brief reports the last read byte as unexpected (parse_error.112)
+    @param[in] detail   what is wrong with the byte, e.g. "invalid byte"
+    @param[in] context  further context information
+    @return the result of the SAX parser's parse_error()
+    */
+    bool unexpected_byte(const char* detail, const std::string& context) const
+    {
+        return last_byte_error(exception_id::unexpected_byte, concat(detail, ": 0x", get_token_string()), context);
+    }
+
+    /*!
+    @brief reports that the last read byte is not a UBJSON/BJData length type (parse_error.113)
+    @param[in] position  where the length type was expected, e.g. " after '#'"
+    @param[in] context   further context information
+    @return the result of the SAX parser's parse_error()
+    */
+    bool length_type_error(const char* position, const char* context) const
+    {
+        const char* types = input_format == input_format_t::bjdata ? "U, i, u, I, m, l, M, L" : "U, i, I, l, L";
+        return last_byte_error(exception_id::invalid_string_or_size,
+                               concat("expected length type specification (", types, ")", position, "; last byte: 0x", get_token_string()), context);
+    }
+
     /*!
     @return a string representation of the last read byte
     */
     std::string get_token_string() const
     {
-        std::array<char, 3> cr{{}};
-        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-        return std::string{cr.data()};
+        return hex_byte(static_cast<std::uint8_t>(current));
     }
 
     /*!

include/nlohmann/detail/input/input_adapters.hpp

@@ -581,7 +581,7 @@ class wide_string_input_adapter
     template<class T>
     JSON_HEDLEY_NO_RETURN std::size_t get_elements(T* /*dest*/, std::size_t /*count*/ = 1)
     {
-        JSON_THROW(parse_error::create(112, 1, "wide string type cannot be interpreted as binary data", nullptr));
+        JSON_THROW(parse_error::create(exception_id::unexpected_byte, 1, "wide string type cannot be interpreted as binary data", nullptr));
     }
 
   private:
@@ -793,7 +793,7 @@ inline file_input_adapter input_adapter(std::FILE* file)
 {
     if (file == nullptr)
     {
-        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+        JSON_THROW(parse_error::create(exception_id::syntax_error, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
     }
     return file_input_adapter(file);
 }
@@ -802,7 +802,7 @@ inline input_stream_adapter input_adapter(std::istream& stream)
 {
     if (stream.rdbuf() == nullptr)
     {
-        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+        JSON_THROW(parse_error::create(exception_id::syntax_error, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
     }
     return input_stream_adapter(stream);
 }
@@ -827,7 +827,7 @@ contiguous_bytes_input_adapter input_adapter(CharT b)
 {
     if (b == nullptr)
     {
-        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+        JSON_THROW(parse_error::create(exception_id::syntax_error, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
     }
     auto length = std::strlen(reinterpret_cast<const char*>(b));
     const auto* ptr = reinterpret_cast<const char*>(b);

include/nlohmann/detail/input/json_sax.hpp

@@ -176,6 +176,27 @@ template<typename ArrayType>
 inline void reserve_array(ArrayType& /*arr*/, std::size_t /*len*/, priority_tag<0> /*unused*/)
 {}
 
+/*!
+@brief reports an object or array whose announced size exceeds max_size()
+
+Shared by json_sax_dom_parser and json_sax_dom_callback_parser.
+
+@param[in] sax   the SAX parser to report the error to
+@param[in] len   the number of elements announced by the input, or unknown_size()
+@param[in] kind  "object" or "array"
+@param[in] ref   the object or array that was just created
+@return whether parsing should continue (false after reporting out_of_range.408)
+*/
+template<typename SAX, typename BasicJsonType>
+bool check_container_size(SAX& sax, std::size_t len, const char* kind, BasicJsonType* ref)
+{
+    if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref->max_size()))
+    {
+        return sax.parse_error(0, "", out_of_range::create(exception_id::container_too_large, concat("excessive ", kind, " size: ", std::to_string(len)), ref));
+    }
+    return true;
+}
+
 #if JSON_DIAGNOSTIC_POSITIONS
 /*!
 @brief set the diagnostic positions of a value the DOM SAX parsers just stored
@@ -185,6 +206,35 @@ befriends this struct, as the position members are private.
 */
 struct diagnostic_positions
 {
+    /*!
+    @param[in,out] v  the object or array whose opening brace or bracket was just read
+    @param[in] lexer  the lexer that read it, or nullptr to leave @a v alone
+    */
+    template<typename BasicJsonType, typename LexerType>
+    static void set_container_start(BasicJsonType& v, LexerType* lexer)
+    {
+        if (lexer)
+        {
+            // Lexer has read the first character of the container, so
+            // subtract 1 from the position to get the correct start position.
+            v.start_position = lexer->get_position() - 1;
+        }
+    }
+
+    /*!
+    @param[in,out] v  the object or array whose closing brace or bracket was just read
+    @param[in] lexer  the lexer that read it, or nullptr to leave @a v alone
+    */
+    template<typename BasicJsonType, typename LexerType>
+    static void set_container_end(BasicJsonType& v, LexerType* lexer)
+    {
+        if (lexer)
+        {
+            // Lexer's position is past the closing brace or bracket, so set that as the end position.
+            v.end_position = lexer->get_position();
+        }
+    }
+
     /*!
     @param[in,out] v  the value that was just parsed
     @param[in] lexer  the lexer that read it, or nullptr to leave @a v alone
@@ -349,22 +399,11 @@ class json_sax_dom_parser
         ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
 
 #if JSON_DIAGNOSTIC_POSITIONS
-        // Manually set the start position of the object here.
         // Ensure this is after the call to handle_value to ensure correct start position.
-        if (m_lexer_ref)
-        {
-            // Lexer has read the first character of the object, so
-            // subtract 1 from the position to get the correct start position.
-            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
-        }
+        diagnostic_positions::set_container_start(*ref_stack.back(), m_lexer_ref);
 #endif
 
-        if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
-        {
-            return parse_error(0, "", out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
-        }
-
-        return true;
+        return check_container_size(*this, len, "object", ref_stack.back());
     }
 
     bool key(string_t& val)
@@ -383,11 +422,7 @@ class json_sax_dom_parser
         JSON_ASSERT(ref_stack.back()->is_object());
 
 #if JSON_DIAGNOSTIC_POSITIONS
-        if (m_lexer_ref)
-        {
-            // Lexer's position is past the closing brace, so set that as the end position.
-            ref_stack.back()->end_position = m_lexer_ref->get_position();
-        }
+        diagnostic_positions::set_container_end(*ref_stack.back(), m_lexer_ref);
 #endif
 
         ref_stack.back()->set_parents();
@@ -400,17 +435,13 @@ class json_sax_dom_parser
         ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
 
 #if JSON_DIAGNOSTIC_POSITIONS
-        // Manually set the start position of the array here.
         // Ensure this is after the call to handle_value to ensure correct start position.
-        if (m_lexer_ref)
-        {
-            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
-        }
+        diagnostic_positions::set_container_start(*ref_stack.back(), m_lexer_ref);
 #endif
 
-        if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
+        if (JSON_HEDLEY_UNLIKELY(!check_container_size(*this, len, "array", ref_stack.back())))
         {
-            return parse_error(0, "", out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+            return false;
         }
 
         if (len != detail::unknown_size())
@@ -427,11 +458,7 @@ class json_sax_dom_parser
         JSON_ASSERT(ref_stack.back()->is_array());
 
 #if JSON_DIAGNOSTIC_POSITIONS
-        if (m_lexer_ref)
-        {
-            // Lexer's position is past the closing bracket, so set that as the end position.
-            ref_stack.back()->end_position = m_lexer_ref->get_position();
-        }
+        diagnostic_positions::set_container_end(*ref_stack.back(), m_lexer_ref);
 #endif
 
         ref_stack.back()->set_parents();
@@ -611,21 +638,11 @@ class json_sax_dom_callback_parser
         {
 
 #if JSON_DIAGNOSTIC_POSITIONS
-            // Manually set the start position of the object here.
             // Ensure this is after the call to handle_value to ensure correct start position.
-            if (m_lexer_ref)
-            {
-                // Lexer has read the first character of the object, so
-                // subtract 1 from the position to get the correct start position.
-                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
-            }
+            diagnostic_positions::set_container_start(*ref_stack.back(), m_lexer_ref);
 #endif
 
-            // check object limit
-            if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
-            {
-                return parse_error(0, "", out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
-            }
+            return check_container_size(*this, len, "object", ref_stack.back());
         }
         return true;
     }
@@ -695,11 +712,7 @@ class json_sax_dom_callback_parser
             {
 
 #if JSON_DIAGNOSTIC_POSITIONS
-                if (m_lexer_ref)
-                {
-                    // Lexer's position is past the closing brace, so set that as the end position.
-                    ref_stack.back()->end_position = m_lexer_ref->get_position();
-                }
+                diagnostic_positions::set_container_end(*ref_stack.back(), m_lexer_ref);
 #endif
 
                 ref_stack.back()->set_parents();
@@ -710,13 +723,7 @@ class json_sax_dom_callback_parser
             }
         }
 
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(!keep_stack.empty());
-        JSON_ASSERT(!container_key_stack.empty());
-        ref_stack.pop_back();
-        keep_stack.pop_back();
-        const string_t object_key = std::move(container_key_stack.back());
-        container_key_stack.pop_back();
+        const string_t object_key = pop_container();
 
         if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
         {
@@ -742,20 +749,13 @@ class json_sax_dom_callback_parser
         {
 
 #if JSON_DIAGNOSTIC_POSITIONS
-            // Manually set the start position of the array here.
             // Ensure this is after the call to handle_value to ensure correct start position.
-            if (m_lexer_ref)
-            {
-                // Lexer has read the first character of the array, so
-                // subtract 1 from the position to get the correct start position.
-                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
-            }
+            diagnostic_positions::set_container_start(*ref_stack.back(), m_lexer_ref);
 #endif
 
-            // check array limit
-            if (JSON_HEDLEY_UNLIKELY(len != detail::unknown_size() && len > ref_stack.back()->max_size()))
+            if (JSON_HEDLEY_UNLIKELY(!check_container_size(*this, len, "array", ref_stack.back())))
             {
-                return parse_error(0, "", out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+                return false;
             }
 
             if (len != detail::unknown_size())
@@ -779,11 +779,7 @@ class json_sax_dom_callback_parser
             {
 
 #if JSON_DIAGNOSTIC_POSITIONS
-                if (m_lexer_ref)
-                {
-                    // Lexer's position is past the closing bracket, so set that as the end position.
-                    ref_stack.back()->end_position = m_lexer_ref->get_position();
-                }
+                diagnostic_positions::set_container_end(*ref_stack.back(), m_lexer_ref);
 #endif
 
                 ref_stack.back()->set_parents();
@@ -809,13 +805,7 @@ class json_sax_dom_callback_parser
             }
         }
 
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(!keep_stack.empty());
-        JSON_ASSERT(!container_key_stack.empty());
-        ref_stack.pop_back();
-        keep_stack.pop_back();
-        const string_t object_key = std::move(container_key_stack.back());
-        container_key_stack.pop_back();
+        const string_t object_key = pop_container();
 
         // remove discarded value
         if (!ref_stack.empty() && ref_stack.back())
@@ -902,6 +892,23 @@ class json_sax_dom_callback_parser
         return string_t{};
     }
 
+    /*!
+    @brief leave the object or array that end_object()/end_array() just closed
+    @return the key the container is stored under in its parent (see
+            container_key_stack)
+    */
+    string_t pop_container()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        JSON_ASSERT(!container_key_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+        string_t object_key = std::move(container_key_stack.back());
+        container_key_stack.pop_back();
+        return object_key;
+    }
+
     /*!
     @brief remove the discarded value the callback rejected from its parent,
     unless it is a duplicate key's slot with a stashed previous value, in