json_view: no byte range in exceptions about a removed value

#5990 dropped the found flag from diagnostics(), reasoning that a value
value_path() does not find leaves no tokens, like the root. But the node
of a value that is no longer part of the document still holds the bytes
it had in the source, so with JSON_DIAGNOSTICS and
JSON_DIAGNOSTIC_POSITIONS its exceptions gained "(bytes 1-4)" for text
that is no longer there. The test #5997 added for exactly this case
(unit-json_view_positions.cpp, "views of values that are no longer part
of the document") has failed on develop since both were merged.

Restore the flag: a value that is not found gets no context, the root
keeps its byte range.

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

.github/workflows/cancel_closed_pr_runs.yml

@@ -24,7 +24,7 @@ jobs:
     permissions:
       actions: write
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
 
     steps:
       - name: Harden Runner

.github/workflows/check_amalgamation.yml

@@ -19,7 +19,7 @@ permissions:
 jobs:
   save:
     if: github.event_name == 'pull_request'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@dc2769abcc0fcfbadfc1df54081c1608579ef6b2 # v2.22.2

.github/workflows/check_docs_links.yml

@@ -16,7 +16,7 @@ concurrency:
 jobs:
   check_docs_links:
     if: github.repository == 'nlohmann/json'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     timeout-minutes: 30
     steps:
       - name: Harden Runner

.github/workflows/comment_check_amalgamation.yml

@@ -12,7 +12,7 @@ jobs:
   comment:
     # push runs on develop have no PR to comment on (and no "pr" artifact)
     if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       contents: read
       actions: read

.github/workflows/dependency-review.yml

@@ -18,7 +18,7 @@ permissions:
 
 jobs:
   dependency-review:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@dc2769abcc0fcfbadfc1df54081c1608579ef6b2 # v2.22.2

.github/workflows/flawfinder.yml

@@ -24,7 +24,7 @@ on:
 jobs:
   flawfinder:
     name: Flawfinder
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: read
       contents: read

.github/workflows/labeler.yml

@@ -19,7 +19,7 @@ jobs:
       contents: read
       pull-requests: write
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
 
     steps:
       - name: Harden Runner

.github/workflows/publish_documentation.yml

@@ -34,7 +34,7 @@ jobs:
       contents: write
 
     if: github.repository == 'nlohmann/json'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@dc2769abcc0fcfbadfc1df54081c1608579ef6b2 # v2.22.2

.github/workflows/scorecards.yml

@@ -24,7 +24,7 @@ permissions:
 jobs:
   analysis:
     name: Scorecard analysis
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       # Needed to upload the results to code-scanning dashboard.
       security-events: write

.github/workflows/stale.yml

@@ -8,7 +8,7 @@ permissions:
 
 jobs:
   stale:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
 
     permissions:
       issues: write

.github/workflows/ubuntu.yml

@@ -18,7 +18,7 @@ concurrency:
 
 jobs:
   ci_test_gcc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: gcc:latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -130,7 +130,7 @@ jobs:
         run: cmake --build build --target ${{ matrix.target }}
 
   ci_static_analysis_clang:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: silkeh/clang:22
     strategy:
       matrix:
@@ -149,7 +149,7 @@ jobs:
         run: cmake --build build --target ${{ matrix.target }}
 
   ci_cmake_options:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: ubuntu:24.04
     strategy:
       matrix:
@@ -209,7 +209,7 @@ jobs:
           fail-on-error: false
 
   ci_test_compilers_gcc_old:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     strategy:
       matrix:
         compiler: ['4.8', '4.9', '5', '6']
@@ -251,7 +251,7 @@ jobs:
         run: cmake --build build --target ci_test_compiler_g++-${{ matrix.compiler }}
 
   ci_test_compilers_gcc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     strategy:
       matrix:
         # older GCC docker images (4, 5, 6) fail to check out code
@@ -269,7 +269,7 @@ jobs:
         run: cmake --build build --target ci_test_compiler_default
 
   ci_test_compilers_clang:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     strategy:
       matrix:
         compiler: ['3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15-bullseye', '16', '17', '18', '19', '20', '21', '22', 'latest']
@@ -289,7 +289,7 @@ jobs:
         run: cmake --build build --target ci_test_compiler_default
 
   ci_test_standards_gcc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: gcc:latest
     strategy:
       matrix:
@@ -306,7 +306,7 @@ jobs:
         run: cmake --build build --target ci_test_gcc_cxx${{ matrix.standard }}
 
   ci_test_standards_clang:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: silkeh/clang:latest
     strategy:
       matrix:
@@ -330,7 +330,7 @@ jobs:
         if: ${{ matrix.stdlib == 'libstdcxx' }}
 
   ci_cuda_example:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     strategy:
       fail-fast: false
       matrix:
@@ -356,7 +356,7 @@ jobs:
     strategy:
       matrix:
         container: ['gcc:latest', 'silkeh/clang:latest']
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: ${{ matrix.container }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -383,7 +383,7 @@ jobs:
         run: cmake --build build --target ci_module_cpp20
 
   ci_icpc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     # Intel discontinued the classic icc/icpc compiler in oneAPI 2024.0; this is
     # Intel's own last officially published image that still includes it.
     container: intel/oneapi-hpckit:2023.2.1-devel-ubuntu22.04
@@ -402,7 +402,7 @@ jobs:
         run: cmake --build build --target ci_icpc
 
   ci_icpx:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: intel/oneapi-hpckit:latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -416,7 +416,7 @@ jobs:
         run: cmake --build build --target ci_icpx
 
   ci_nvhpc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     container: nvcr.io/nvidia/nvhpc:25.5-devel-cuda12.9-ubuntu22.04
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

cmake/ci.cmake

@@ -348,20 +348,20 @@ add_custom_target(ci_test_no_thread_local
 
 add_custom_target(ci_test_coverage
     COMMAND CXX=g++ ${CMAKE_COMMAND}
-        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="--coverage;-fprofile-arcs;-ftest-coverage"
+        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="--coverage;-fprofile-arcs;-ftest-coverage;-fvar-tracking-assignments"
         -DJSON_BuildTests=ON
         -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_coverage
     COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_coverage
     COMMAND cd ${PROJECT_BINARY_DIR}/build_coverage && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
 
     COMMAND CXX=g++ ${CMAKE_COMMAND}
-        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="-m32;--coverage;-fprofile-arcs;-ftest-coverage"
+        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="-m32;--coverage;-fprofile-arcs;-ftest-coverage;-fvar-tracking-assignments"
         -DJSON_BuildTests=ON -DJSON_32bitTest=ONLY
         -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_coverage32
     COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_coverage32
     COMMAND cd ${PROJECT_BINARY_DIR}/build_coverage32 && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
 
-    COMMAND ${LCOV_TOOL} --directory . --capture --output-file json.info --rc branch_coverage=1 --rc geninfo_unexecuted_blocks=1 --ignore-errors mismatch --ignore-errors unused --ignore-errors inconsistent
+    COMMAND ${LCOV_TOOL} --directory . --capture --output-file json.info --rc branch_coverage=1 --ignore-errors mismatch --ignore-errors unused --ignore-errors inconsistent
     COMMAND ${LCOV_TOOL} -e json.info ${SRC_FILES} --output-file json.info.filtered --rc branch_coverage=1 --ignore-errors unused --ignore-errors inconsistent
     COMMAND ${CMAKE_SOURCE_DIR}/tests/thirdparty/imapdl/filterbr.py json.info.filtered > json.info.filtered.noexcept
     COMMAND ${GENHTML_TOOL} --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage --ignore-errors inconsistent json.info.filtered.noexcept

cmake/test.cmake

@@ -178,8 +178,10 @@ function(_json_test_add_test test_name file main cxx_standard)
             COMMAND ${memcheck_command} $<TARGET_FILE:${test_target}> ${DOCTEST_TEST_FILTER}
             WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
         )
+        # under Valgrind the slowest tests take close to 25 minutes, so ctest's
+        # default timeout of 1500 seconds leaves no headroom
         set_tests_properties(${test_target}_valgrind PROPERTIES
-            LABELS "valgrind" FIXTURES_REQUIRED TEST_DATA
+            LABELS "valgrind" FIXTURES_REQUIRED TEST_DATA TIMEOUT 3600
         )
     endif()
 endfunction()

docs/mkdocs/docs/api/basic_json/get.md

@@ -120,6 +120,16 @@ overload (3).
     See [Number conversion](../../features/types/number_handling.md#number-conversion)
     for more information.
 
+!!! note "Booleans as numbers"
+
+    A JSON boolean converts to `#!cpp 0` or `#!cpp 1` for every arithmetic type **except** [`number_integer_t`](number_integer_t.md),
+    [`number_unsigned_t`](number_unsigned_t.md) and [`number_float_t`](number_float_t.md) (by default `#!cpp std::int64_t`,
+    `#!cpp std::uint64_t`, and `#!cpp double`), for which `#!cpp get<T>()` throws
+    [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) ("type must be number, but is boolean"). So
+    `#!cpp json(true).get<int>()` is `#!cpp 1`, while `#!cpp json(true).get<std::int64_t>()` and
+    `#!cpp json(true).get<double>()` throw. This is the behavior of all 3.x versions;
+    [`basic_json_view::get<T>()`](../basic_json_view/get.md) behaves the same.
+
 !!! note "`std::optional` conversions"
 
     Prior to version 3.13.0, `#!cpp get<std::optional<T>>()` (and other conversions to `std::optional<T>`) failed to

docs/mkdocs/docs/api/basic_json/insert.md

@@ -65,7 +65,12 @@ the same index, which is now a different value.
 
 ## Exception safety
 
-Strong exception safety: if an exception occurs, the original value stays intact.
+Overload (1) gives the strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+Overloads (2) to (5) give the basic guarantee: if an exception is thrown while the elements or members are copied
+(for example, `std::bad_alloc`), the JSON value may be partially modified, but it stays a valid array or object.
+
+The exceptions listed below are thrown before the JSON value is changed.
 
 ## Exceptions
 

docs/mkdocs/docs/api/basic_json_document/accept.md

@@ -13,9 +13,15 @@ function never throws an exception for invalid input, and the returned `#!cpp bo
 is returned.
 
 The result is the same as that of `BasicJsonType::accept()` by design; the difference is how the check is made. This
-function runs the document's index builder (and discards the index), while `BasicJsonType::accept()` runs the SAX
-parser with a handler that ignores every event. Use this one if you go on to parse the same input with
-[`parse()`](parse.md) anyway, so that both use the same code; either is fine for a plain yes/no answer.
+function runs the document's builder, which checks the text as [`parse()`](parse.md) does, while
+`BasicJsonType::accept()` runs the SAX parser with a handler that ignores every event. Use this one if you go on to
+parse the same input with [`parse()`](parse.md) anyway, so that both use the same code; either is fine for a plain
+yes/no answer.
+
+When both `ignore_comments` and `ignore_trailing_commas` are `#!cpp false` (the default), the builder writes no index.
+With either option set, it builds the index as [`parse()`](parse.md) does and discards it: the result is the same, only
+the time differs. (Neither option needs the index; the variant that skips it exists only for the default options to
+keep the code size down.)
 
 ## Template parameters
 

docs/mkdocs/docs/api/basic_json_view/at.md

@@ -68,9 +68,10 @@ Strong guarantee: there are no changes to the view or the document it refers to.
     - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if `ptr` cannot be resolved
       because a reference token is used on a primitive value.
 
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) these exceptions name the JSON
+Pointer path of the value within the document, and with
+[`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) its bytes in the source text (when
+[`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/back.md

@@ -20,9 +20,9 @@ Strong guarantee: there are no changes to the view or the document it refers to.
 Throws [`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) if the view is
 [null](is_null.md) or [discarded](is_discarded.md), or if it is an empty array or object.
 
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) the exception names the JSON Pointer
+path of the value within the document, and with [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md)
+its bytes in the source text (when [`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/front.md

@@ -20,9 +20,9 @@ Strong guarantee: there are no changes to the view or the document it refers to.
 Throws [`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) if the view is
 [null](is_null.md) or [discarded](is_discarded.md), or if it is an empty array or object.
 
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) the exception names the JSON Pointer
+path of the value within the document, and with [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md)
+its bytes in the source text (when [`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/get.md

@@ -11,7 +11,8 @@ For the types below, the conversion works directly on the flat index — no `Bas
 
 - `#!cpp bool`
 - arithmetic types other than `#!cpp bool` (for a boolean, `#!cpp 0`/`#!cpp 1`, exactly as for
-  [`BasicJsonType::get<T>()`](../basic_json/get.md))
+  [`BasicJsonType::get<T>()`](../basic_json/get.md#notes), except for `number_integer_t`, `number_unsigned_t` and
+  `number_float_t`, which throw `type_error.302` for a boolean, as `BasicJsonType::get<T>()` does)
 - `#!cpp std::nullptr_t`
 - `#!cpp std::basic_string<char, Traits, Alloc>` (including `string_t`) — a copy of the string
 - [`string_view_t`](index.md#member-types) — **no copy**: the returned view points into the document's
@@ -80,14 +81,13 @@ Strong guarantee: there are no changes to the view or the document it refers to.
 - For every other `T`: whatever [`materialize().get<T>()`](../basic_json/get.md) throws — typically `type_error.302`,
   or whatever a user-provided `from_json()` throws.
 
-None of the exceptions thrown directly by this function or by a `from_json()` that reads the view (the first four
-bullets above) carry a
-[`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no `BasicJsonType` value to point at. An
-exception thrown while converting through `materialize()` (the last bullet) is different: it is thrown by a real
-`BasicJsonType` value, so it **does** carry a `JSON_DIAGNOSTICS` path if `BasicJsonType` was built with it enabled.
-That path is relative to the root of the view's subtree, because `materialize()` builds only the subtree (with parent
-pointers): it is empty if the failing value is the subtree's root itself, and it never is the path within the whole
-document.
+The exceptions thrown directly by this function or by a `from_json()` that reads the view (the first four bullets
+above) carry the context of those of `BasicJsonType`: with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) the
+JSON Pointer path of the value within the document, and with
+[`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) its bytes in the source text. An exception
+thrown while converting through `materialize()` (the last bullet) is thrown by the materialized `BasicJsonType` value
+instead: its path is relative to the root of the view's subtree, because `materialize()` builds only the subtree
+(with parent pointers), so it is empty if the failing value is the subtree's root itself.
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/get_string.md

@@ -22,9 +22,9 @@ Strong guarantee: there are no changes to the view or the document it refers to.
 Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value is not a string; example:
 `"type must be string, but is array"`.
 
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) the exception names the JSON Pointer
+path of the value within the document, and with [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md)
+its bytes in the source text (when [`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/number_token.md

@@ -22,9 +22,9 @@ Strong guarantee: there are no changes to the view or the document it refers to.
 Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value is not a number; example:
 `"type must be number, but is string"`.
 
-This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) the exception names the JSON Pointer
+path of the value within the document, and with [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md)
+its bytes in the source text (when [`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

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

@@ -73,9 +73,10 @@ Strong guarantee: there are no changes to the view or the document it refers to.
     - [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in `ptr` is not a
       number.
 
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) these exceptions name the JSON
+Pointer path of the value within the document, and with
+[`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) its bytes in the source text (when
+[`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/basic_json_view/value.md

@@ -61,9 +61,10 @@ Strong guarantee: there are no changes to the view or the document it refers to.
    `default_value` instead of throwing, exactly as [`BasicJsonType::value`](../basic_json/value.md) catches
    `out_of_range` and returns `default_value`.
 
-None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no
-`BasicJsonType` value to point at, so the exception is created without one, even if `BasicJsonType` was built with
-`JSON_DIAGNOSTICS` enabled.
+As for `BasicJsonType`, with [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) these exceptions name the JSON
+Pointer path of the value within the document, and with
+[`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) its bytes in the source text (when
+[`materialize()`](materialize.md) sets them).
 
 ## Complexity
 

docs/mkdocs/docs/api/macros/json_diagnostic_positions.md

@@ -35,6 +35,9 @@ Note that enabling this macro increases the size of every JSON value by two `std
 overhead to parsing, copying JSON value objects, and the generation of error messages for exceptions. It also causes
 these values to be reported in those error messages.
 
+If [`JSON_DIAGNOSTICS`](json_diagnostics.md) is also set, the message contains the path and the byte range, such as
+`(/1) (bytes 4-8)`. An exception about the root value has no path and only the range, such as `(bytes 0-4)`.
+
 ## Default definition
 
 The default value is `0` (position diagnostics are switched off).

docs/mkdocs/docs/css/brand.css

@@ -759,14 +759,9 @@ body:has(.nj-hero) .md-content {
     }
 }
 
-/* blog posts: author and date right below the title */
-.md-typeset .nj-byline { margin: -.8rem 0 1.6rem; font-size: .75rem; color: var(--md-default-fg-color--light); }
-.md-typeset .nj-byline a { color: inherit; }
-.md-typeset .nj-byline a:hover { color: var(--md-accent-fg-color); }
-
 /* figure captions: "Figure N." in bold, close to the figure, set in from the text column; figures and tables are
    numbered per page, each with its own counter */
-.md-content__inner { counter-reset: nj-figure nj-table nj-listing; }
+.md-content__inner { counter-reset: nj-figure nj-table; }
 .md-typeset :is(.nj-caption, .nj-charts-caption) {
     max-width: none;
     margin: .3rem 2rem 1.5rem;
@@ -787,25 +782,6 @@ body:has(.nj-hero) .md-content {
     .md-typeset :is(.nj-caption, .nj-charts-caption) { margin-inline: 1rem; }
 }
 
-/* code captions: "Listing N." in bold, directly below the code block, in the figure caption style */
-.md-typeset .nj-code-caption {
-    max-width: none;
-    margin: -.4rem 2rem 1.5rem;
-    font-size: .75rem;
-    line-height: 1.5;
-    text-align: left;
-    color: var(--md-default-fg-color--light);
-}
-.md-typeset .nj-code-caption::before {
-    counter-increment: nj-listing;
-    content: "Listing " counter(nj-listing) ". ";
-    font-weight: 700;
-    color: var(--md-default-fg-color);
-}
-@media screen and (max-width: 44.9375em) {
-    .md-typeset .nj-code-caption { margin-inline: 1rem; }
-}
-
 /* table captions: "Table N." in bold, directly below the table, in the figure caption style */
 .md-typeset .nj-table-caption {
     max-width: none;

docs/mkdocs/docs/css/fig-charts.css

@@ -27,10 +27,6 @@
 
 .md-typeset svg.nj-charts--compile, .md-typeset svg.nj-charts--scaling { max-width: 26rem; }
 .md-typeset svg.nj-charts--sizes { max-width: 26rem; }
-/* home/blog/how_3_13_0_got_faster.md (scripts/figures/perf_blog.py) */
-.md-typeset svg.nj-charts--blog { max-width: 34rem; }
-.md-typeset svg.nj-charts--swar { max-width: 34rem; }
-.md-typeset svg.nj-charts--timeline { max-width: 22rem; }
 
 .nj-charts text { fill: currentColor; font-size: 13px; }
 .nj-charts .nj-charts-leg { font-size: 13.5px; }
@@ -47,34 +43,10 @@
     paint-order: stroke; stroke: var(--md-default-bg-color); stroke-width: 4px; stroke-linejoin: round; }
 .nj-charts .nj-charts-factor { fill: var(--nj-charts-ink2); font-size: 12px; font-weight: 600; text-anchor: middle; }
 .nj-charts .nj-charts-note { fill: var(--nj-charts-ink2); font-size: 12px; }
-/* heatmap cells (perf_blog_usecases_*.svg): green for the fastest, gray around twice the time, red for the slowest;
-   adjacent steps checked for CVD separation on the light and the slate surface; the numbers are in every cell */
-.md-typeset svg.nj-charts--heat { max-width: 49rem; }
-.nj-charts--heat { --nj-heat-0: #3fa557; --nj-heat-1: #8bcc95; --nj-heat-2: #ebeae6; --nj-heat-3: #f2ae9b;
-                   --nj-heat-4: #dc5a43; --nj-heat-ink: #1b1b1b; --nj-heat-ink-strong: #1b1b1b; }
-[data-md-color-scheme="slate"] .nj-charts--heat { --nj-heat-0: #3a9d50; --nj-heat-1: #2c6b3a; --nj-heat-2: #33353a;
-                   --nj-heat-3: #8a3f2e; --nj-heat-4: #d95b3a; --nj-heat-ink: #e8e8e6; --nj-heat-ink-strong: #141414; }
-.nj-charts .nj-heat-0 { fill: var(--nj-heat-0); }
-.nj-charts .nj-heat-1 { fill: var(--nj-heat-1); }
-.nj-charts .nj-heat-2 { fill: var(--nj-heat-2); }
-.nj-charts .nj-heat-3 { fill: var(--nj-heat-3); }
-.nj-charts .nj-heat-4 { fill: var(--nj-heat-4); }
-.nj-charts .nj-heat-na { fill: none; stroke: var(--nj-charts-grid); stroke-width: 1; }
-.nj-charts .nj-charts-cell { fill: var(--nj-heat-ink); font-size: 12px; font-variant-numeric: tabular-nums; }
-.nj-charts :is(.nj-heat-0, .nj-heat-4) ~ .nj-charts-cell { fill: var(--nj-heat-ink-strong); }
-.nj-charts .nj-charts-cell--small { font-size: 10.5px; }
-.nj-charts .nj-heat-cell { cursor: default; outline: none; }
-.nj-charts .nj-heat-cell:is(:hover, :focus-visible, .nj-heat-on) rect { stroke: var(--md-default-fg-color); stroke-width: 1.5; }
-.nj-heat-tip { position: absolute; z-index: 5; max-width: 24rem; padding: .5rem .7rem; border-radius: 6px;
-               background: var(--md-default-bg-color); color: var(--md-default-fg-color);
-               box-shadow: 0 2px 10px rgba(0, 0, 0, .25); font-size: .68rem; line-height: 1.45; pointer-events: none; }
-.nj-heat-tip strong { display: block; margin-bottom: .2rem; }
-.nj-heat-tip[hidden] { display: none; }
 
 .nj-charts .nj-charts-grid { stroke: var(--nj-charts-grid); stroke-width: 1; }
 .nj-charts .nj-charts-zero, .nj-charts .nj-charts-axis { stroke: var(--nj-charts-base); stroke-width: 1.5; }
 .nj-charts .nj-charts-ref { stroke: currentColor; stroke-width: 1.5; }
-.nj-charts .nj-charts-head { fill: var(--nj-charts-base); }
 
 .nj-charts .nj-charts-c1 { fill: var(--nj-charts-c1); }
 .nj-charts .nj-charts-c2 { fill: var(--nj-charts-c2); }
@@ -168,19 +140,3 @@
 /* direct line labels replace the legend */
 .nj-charts .nj-charts-name-json { fill: var(--nj-charts-json-c); font-weight: 600; }
 .nj-charts .nj-charts-name-ojson { fill: var(--nj-charts-ojson-c); font-weight: 600; }
-
-/* theme badges of home/blog/how_3_13_0_got_faster.md: the number of one of the eight themes, as a digit in a blue
-   circle, in headings, text, tables and the timeline figures (nj-theme-dot); "U" and other marks are gray */
-.md-typeset .nj-theme { display: inline-flex; align-items: center; justify-content: center; box-sizing: border-box;
-    min-width: 1.45em; height: 1.45em; padding: 0 .3em; border-radius: .725em; vertical-align: .08em;
-    background: var(--nj-blue); color: var(--md-default-bg-color); font-size: .78em; font-weight: 700; line-height: 1;
-    font-variant-numeric: tabular-nums; text-decoration: none; }
-.md-typeset a.nj-theme:is(:hover, :focus-visible) { background: var(--nj-blue-deep); color: var(--md-default-bg-color); }
-.md-typeset .nj-theme--other { background: var(--md-default-fg-color--light); }
-.md-typeset h2 .nj-theme { margin-right: .35em; vertical-align: .12em; }
-.md-typeset .nj-theme-list > ul { list-style: none; margin-left: 0; }
-.md-typeset .nj-theme-list > ul > li { margin-left: 0; padding-left: 2em; text-indent: -2em; }
-.md-typeset .nj-theme-list > ul > li > .nj-theme { margin-right: .55em; text-indent: 0; }
-.nj-charts .nj-theme-dot { fill: var(--nj-blue); }
-.nj-charts .nj-theme-dot--other { fill: var(--nj-charts-ink2); }
-.nj-charts .nj-theme-num { fill: var(--md-default-bg-color); font-size: 11px; font-weight: 700; }

docs/mkdocs/docs/features/json_view.md

@@ -134,9 +134,21 @@ document: `#!cpp auto v = json_document::parse(text).root();` does not compile.
 - **Macros.** [`JSON_STRICT_NUL_HANDLING`](../api/macros/json_strict_nul_handling.md) and
   [`JSON_NOEXCEPTION`](../api/macros/json_noexception.md)/[`JSON_THROW_USER`](../api/macros/json_throw_user.md)
   behave the same way they do for `<nlohmann/json.hpp>`. These are the macros that change what the parser accepts or
-  how it reports errors. The others either do not apply ([`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md)
-  needs parent pointers in `basic_json` values) or only affect the values `materialize()` produces, through
-  `BasicJsonType`.
+  how it reports errors. Two more macros add context to the exceptions of views, as they do for those of
+  `#!cpp basic_json`:
+
+    - With [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md), an exception names the JSON Pointer path of the
+      value within the document.
+    - With [`JSON_DIAGNOSTIC_POSITIONS`](../api/macros/json_diagnostic_positions.md), an exception names the bytes of
+      the value in the source text.
+
+    A view has neither parent pointers nor stored positions, so both are found from the document's index when the
+    exception is thrown. This takes time linear in the size of the document. One exception has neither:
+    `key()` of an iterator over an array or a primitive value
+    ([`invalid_iterator.207`](../home/exceptions.md#jsonexceptioninvalid_iterator207)), because a view's iterator does
+    not know the value it iterates over.
+
+    The other macros only affect the values `materialize()` produces, through `BasicJsonType`.
 
 ## What is different
 
@@ -167,10 +179,6 @@ document: `#!cpp auto v = json_document::parse(text).root();` does not compile.
   [`at`](../api/basic_json_view/at.md) throws for every missing value.
 - **Duplicate keys: lookups find the first member, `parse()` keeps the last.** See [Duplicate keys](#duplicate-keys)
   below.
-- **No [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) path.** Exceptions thrown by `basic_json_view`'s own
-  element access and lookup functions never carry the JSON Pointer path `JSON_DIAGNOSTICS` would otherwise add: the
-  view has no `basic_json` value to point at, so the exception is created without one, regardless of how
-  `BasicJsonType` was built.
 - **Ordering comparisons are not provided** by `basic_json_view` — there is no `#!cpp operator<`.
   [`operator==`](../api/basic_json_view/operator_eq.md) and [`operator!=`](../api/basic_json_view/operator_ne.md) are
   provided, though: two views, or a view and a `BasicJsonType` value, compare equal exactly when
@@ -253,6 +261,34 @@ Two conversions never copy at all:
 
 Both results are only valid as long as the view — and, for a string with no escapes, the borrowed source text — is.
 
+### `string_view` members
+
+A struct whose member is a `#!cpp std::string_view` (C++17) can be decoded from a view with the
+`NLOHMANN_DEFINE_TYPE_*` macros, and the member is not copied either: for a string without escape sequences it points
+into the document's source text, and for a string with escape sequences into the document's buffer of decoded strings.
+The member is valid as long as the document is alive and, for a document that
+[borrows its source text](#ownership-and-lifetime) (as [`parse()`](../api/basic_json_document/parse.md) does for
+an lvalue `#!cpp std::string`, a `#!cpp std::string_view`, or a C string), as long as that text is.
+
+```cpp
+struct record
+{
+    std::string_view name;
+    int count;
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(record, name, count)
+};
+
+const std::string text = R"({"name": "widget", "count": 3})";
+const json_document doc = json_document::parse(text);  // borrows text
+const record r = doc.root().get<record>();             // r.name points into text, valid while text and doc are
+```
+
+!!! warning "Decoding into a `string_view` from a `json` value dangles at once"
+
+    The same struct also compiles with `#!cpp json::parse(text).get<record>()`, but there `name` points into the
+    temporary `json` value, which is destroyed at the end of the statement. Use a named
+    [`json_document`](../api/json_document.md), as above, to decode such a struct.
+
 ## Writing generic code
 
 A view's type names its `BasicJsonType` and its [`view_mode`](../api/view_mode.md):
@@ -329,14 +365,10 @@ Its body may only use what views and `basic_json` have in common: the type check
 a view does not have; such a type is converted through `materialize()`. A `from_json()` for `json` only is
 converted through `materialize()` as well.
 
-Two things differ when a `from_json()` reads the view:
-
-- **Duplicate keys.** Members looked up by name (`at()`, `value()`, ... and thus the macros) find the **first** member
-  with a repeated key, see [Duplicate keys](#duplicate-keys); `#!cpp materialize().get<T>()` would see the last one.
-  Containers built from an object, such as `#!cpp std::map`, keep the **last** value either way, as
-  [`parse()`](../api/basic_json/parse.md) does.
-- **[`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md).** Exceptions thrown by the view carry no path to the
-  value.
+One thing differs when a `from_json()` reads the view: members looked up by name (`at()`, `value()`, ... and thus
+the macros) find the **first** member with a repeated key, see [Duplicate keys](#duplicate-keys);
+`#!cpp materialize().get<T>()` would see the last one. Containers built from an object, such as `#!cpp std::map`,
+keep the **last** value either way, as [`parse()`](../api/basic_json/parse.md) does.
 
 `to_json()` is unaffected: it writes `basic_json` values, never views.
 

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

@@ -406,6 +406,7 @@ using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
 | `#!cpp operator<<(std::ostream&, const json_pointer&)`                                                                            | streamability to `#!cpp std::ostream`                                                                                                                                                        |
 | [`to_string`](../../api/basic_json/to_string.md)                                                                                  | conversion of `StringType` to `#!cpp std::string` (the function returns a `#!cpp std::string`)                                                                                               |
 | exception messages                                                                                                                | `data()` and `size()`, or `begin()` and `end()`                                                                                                                                              |
+| [`basic_json_view::dump`](../../api/basic_json_view/dump.md)                                                                      | `reserve(n)` and `resize(n)` (one argument); `capacity()` is **not** required                                                                                                                |
 
 ### Compatible types
 

docs/mkdocs/docs/home/debugging.md

@@ -10,6 +10,13 @@ at its root, a [Natvis](https://learn.microsoft.com/en-us/visualstudio/debugger/
 file that gives `json`/`ordered_json` values a friendly, key/value debugger view instead of showing raw internal
 fields, when debugging with the MSVC debug engine (`cppvsdbg`) in Visual Studio or VS Code.
 
+The file also has visualizers for `json_document` and `json_view` (and their `ordered_json`/editable variants). They
+show the value of the document or view, and its elements as an expandable list. Because a document is only a flat index
+into the source text, the strings of the direct elements are shown, but the elements of nested arrays and objects are
+shown as index nodes (their kind, size, and numbers; strings only by length). Arrays and objects that have been edited
+in a `json_editable_document` are not expanded. The visualizers read the internal layout of the MSVC STL (`std::array`,
+`std::unique_ptr`).
+
 The checked-in visualizers cover namespace variants with zero, one, or two ABI tags. Configurations with three or more
 ABI tags are not covered and may show raw internal fields instead. To generate a Natvis file for such a configuration:
 
@@ -29,7 +36,7 @@ ABI tags are not covered and may show raw internal fields instead. To generate a
 
 4. Use the generated file instead of `nlohmann_json.natvis`.
 
-`--abi-tags` can be repeated for several configurations, and `--all` generates every combination (about 60 MB for 12
+`--abi-tags` can be repeated for several configurations, and `--all` generates every combination (about 60 MB for 11
 ABI tags, doubling with each further tag). See
 [`tools/generate_natvis`](https://github.com/nlohmann/json/tree/develop/tools/generate_natvis) for all options.
 

docs/mkdocs/docs/images/json_view_layout.svg

@@ -17,16 +17,16 @@
 <path class="nj-jsonview-arr nj-jsonview-c-line" d="M76 115 L106 115" marker-end="url(#jvl-line)"/>
 <rect class="nj-jsonview-heap" x="108" y="98" width="84" height="34" rx="5"/>
 <text class="nj-jsonview-mono" x="150" y="120" text-anchor="middle" xml:space="preserve">std::map</text>
-<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 67" marker-end="url(#jvl-line)"/>
+<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 67 226 67" marker-end="url(#jvl-line)"/>
 <rect class="nj-jsonview-heap" x="228" y="50" width="180" height="34" rx="5"/>
 <text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="72" xml:space="preserve">&quot;port&quot;</text>
 <text class="nj-jsonview-mono nj-jsonview-c-num" x="396" y="72" text-anchor="end" xml:space="preserve">6379</text>
-<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 115" marker-end="url(#jvl-line)"/>
+<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 115 226 115" marker-end="url(#jvl-line)"/>
 <rect class="nj-jsonview-heap" x="228" y="98" width="180" height="34" rx="5"/>
 <text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="120" xml:space="preserve">&quot;price&quot;</text>
 <text class="nj-jsonview-mono nj-jsonview-c-num" x="396" y="120" text-anchor="end" xml:space="preserve">19.9</text>
 <text class="nj-jsonview-note" x="418" y="120" xml:space="preserve">double: 19.90 is gone</text>
-<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 163" marker-end="url(#jvl-line)"/>
+<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 163 226 163" marker-end="url(#jvl-line)"/>
 <rect class="nj-jsonview-heap" x="228" y="146" width="180" height="34" rx="5"/>
 <text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="168" xml:space="preserve">&quot;tags&quot;</text>
 <text class="nj-jsonview-mono nj-jsonview-c-line" x="396" y="168" text-anchor="end" xml:space="preserve">•</text>
@@ -38,8 +38,8 @@
 <path class="nj-jsonview-sep" d="M624 146 V180"/>
 <text class="nj-jsonview-mono" x="601" y="168" text-anchor="middle" xml:space="preserve">json</text>
 <text class="nj-jsonview-mono" x="647" y="168" text-anchor="middle" xml:space="preserve">json</text>
-<path class="nj-jsonview-arr nj-jsonview-c-line" d="M601 146 C601 130 641 130 706 130" marker-end="url(#jvl-line)"/>
-<path class="nj-jsonview-arr nj-jsonview-c-line" d="M647 180 C647 196 687 196 706 196" marker-end="url(#jvl-line)"/>
+<path class="nj-jsonview-arr nj-jsonview-c-line" d="M601 146 C601 126 706 150 706 130" marker-end="url(#jvl-line)"/>
+<path class="nj-jsonview-arr nj-jsonview-c-line" d="M647 180 C647 200 706 176 706 196" marker-end="url(#jvl-line)"/>
 <rect class="nj-jsonview-heap" x="708" y="113" width="126" height="34" rx="5"/>
 <text class="nj-jsonview-mono nj-jsonview-sm nj-jsonview-c-str" x="771" y="135" text-anchor="middle" xml:space="preserve">std::string eu</text>
 <rect class="nj-jsonview-heap" x="708" y="179" width="126" height="34" rx="5"/>

docs/mkdocs/docs/images/json_view_layout_index.svg

@@ -1,148 +0,0 @@
-<svg class="nj-fig nj-jsonview " viewBox="0 0 840 456" role="img" aria-labelledby="fig-jvli-title fig-jvli-title-d" xmlns="http://www.w3.org/2000/svg">
-<title id="fig-jvli-title">The same J&#8203;SON text parsed by json_document::parse()</title>
-<desc id="fig-jvli-title-d">The same text parsed by json_document::parse(): it keeps the 54 bytes of source text and builds a flat index of nine 16-byte nodes in document order: object, key port, unsigned integer 6379 (the converted value is in the node), key price, float, key tags, array, string eu, and an escaped string. Keys, the float, and the plain string point back into the source text; the escaped string points into the document&#x27;s buffer of decoded strings. A json_view is two pointers: one to the document and one to a node, here the array.</desc>
-<defs>
-<marker id="jvli-line" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-line nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-str" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-str nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-key" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-key nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-num" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-num nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-dec" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-dec nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-own" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-own nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-struct" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-struct nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-<marker id="jvli-bad" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="6.5" markerHeight="6.5" orient="auto-start-reverse"><path class="nj-jsonview-c-bad nj-jsonview-head" d="M0 1 L10 5 L0 9 z"/></marker>
-</defs>
-<g transform="translate(0 -236)">
-<text class="nj-jsonview-h" x="16" y="262" xml:space="preserve">json_document::parse(): the source text stays where it is; one flat index of 16-byte nodes</text>
-<text class="nj-jsonview-note" x="16" y="290" xml:space="preserve">source text, 54 bytes (borrowed, or owned by the document)</text>
-<rect class="nj-jsonview-ribbon" x="42" y="300" width="756" height="26" rx="4"/>
-<rect class="nj-jsonview-span nj-jsonview-c-key" x="71" y="302" width="54" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-num" x="169" y="302" width="54" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-key" x="267" y="302" width="68" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-num" x="379" y="302" width="68" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-key" x="491" y="302" width="54" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-str" x="617" y="302" width="26" height="22" rx="3"/>
-<rect class="nj-jsonview-span nj-jsonview-c-dec" x="701" y="302" width="54" height="22" rx="3"/>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="49" y="317.5" text-anchor="middle" xml:space="preserve">{</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="63" y="317.5" text-anchor="middle" xml:space="preserve">&quot;</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="77" y="317.5" text-anchor="middle" xml:space="preserve">p</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="91" y="317.5" text-anchor="middle" xml:space="preserve">o</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="105" y="317.5" text-anchor="middle" xml:space="preserve">r</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="119" y="317.5" text-anchor="middle" xml:space="preserve">t</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="133" y="317.5" text-anchor="middle" xml:space="preserve">&quot;</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="147" y="317.5" text-anchor="middle" xml:space="preserve">:</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="175" y="317.5" text-anchor="middle" xml:space="preserve">6</text>
-<text class="nj-jsonview-mono nj-jsonview-byte" x="189" y="317.5" text-anchor="middle" xml:space="preserve">3</text>
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-<text class="nj-charts-val" x="400.5" y="138">6.8&#215;</text>
-<text class="nj-charts-rowlabel nj-charts-tick--r" x="182" y="162" text-anchor="end">twitter, std::ifstream</text>
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-<text class="nj-charts-val" x="270" y="162">2.5&#215;</text>
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-<text class="nj-charts-val" x="396" y="266">6.7&#215;</text>
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-<text class="nj-charts-val" x="296.7" y="394">3.4&#215;</text>
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-<path class="nj-charts-c1" d="M190 406 H383.7 Q387.7 406 387.7 410 V417 Q387.7 421 383.7 421 H190 Z"><title>twitter, FILE*: 6.6&#215;</title></path>
-<text class="nj-charts-val" x="392.7" y="418">6.6&#215;</text>
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-<text class="nj-charts-val" x="508.8" y="474">10&#215;</text>
-<text class="nj-charts-rowlabel nj-charts-tick--r" x="182" y="498" text-anchor="end">iterate canada</text>
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docs/mkdocs/docs/images/perf_blog_price.svg

@@ -1,99 +0,0 @@
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-<title id="nj-blog-price">Compile time of two programs with 3.13.0, alone, with a precompiled header and as a module, compared with 3.12.0</title>
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-<text class="nj-charts-leg" x="368.4" y="16.5">3.13.0, module</text>
-<text class="nj-charts-tick" x="320.833" y="46">as fast as 3.12.0</text>
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-<text class="nj-charts-val" x="455.667" y="87.5">+38 %</text>
-<path class="nj-charts-c1" d="M320.833 92 H229.167 Q225.167 92 225.167 96 V99 Q225.167 103 229.167 103 H320.833 Z"><title>count_numbers, Apple clang 21, -O0 (debug), 3.13.0, precompiled header: 688 ms against 955 ms with 3.12.0 (&#8722;28 %)</title></path>
-<text class="nj-charts-val" x="220.167" y="101.5" text-anchor="end">&#8722;28 %</text>
-<path class="nj-charts-c3" d="M320.833 106 H311.167 Q307.167 106 307.167 110 V113 Q307.167 117 311.167 117 H320.833 Z"><title>count_numbers, Apple clang 21, -O0 (debug), 3.13.0, module: 918 ms against 955 ms with 3.12.0 (&#8722;4 %)</title></path>
-<text class="nj-charts-val" x="302.167" y="115.5" text-anchor="end">&#8722;4 %</text>
-<text class="nj-charts-rowlabel nj-charts-code" x="142" y="150" text-anchor="end">server_config</text>
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-<text class="nj-charts-val" x="442" y="136.5">+34 %</text>
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-<text class="nj-charts-val" x="237.25" y="150.5" text-anchor="end">&#8722;23 %</text>
-<path class="nj-charts-c3" d="M320.833 155 H323.667 Q327.667 155 327.667 159 V162 Q327.667 166 323.667 166 H320.833 Z"><title>server_config, Apple clang 21, -O0 (debug), 3.13.0, module: 1,136 ms against 1,113 ms with 3.12.0 (+2 %)</title></path>
-<text class="nj-charts-val" x="332.667" y="164.5">+2 %</text>
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-<line class="nj-charts-grid" x1="389.167" y1="204" x2="389.167" y2="300"/>
-<line class="nj-charts-grid" x1="457.5" y1="204" x2="457.5" y2="300"/>
-<line class="nj-charts-grid" x1="525.833" y1="204" x2="525.833" y2="300"/>
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-<text class="nj-charts-val" x="493.25" y="217.5">+49 %</text>
-<path class="nj-charts-c1" d="M320.833 222 H333.917 Q337.917 222 337.917 226 V229 Q337.917 233 333.917 233 H320.833 Z"><title>count_numbers, Apple clang 21, -O2, 3.13.0, precompiled header: 1,458 ms against 1,393 ms with 3.12.0 (+5 %)</title></path>
-<text class="nj-charts-val" x="342.917" y="231.5">+5 %</text>
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-<text class="nj-charts-val" x="397.583" y="245.5">+21 %</text>
-<text class="nj-charts-rowlabel nj-charts-code" x="142" y="280" text-anchor="end">server_config</text>
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-<text class="nj-charts-val" x="479.583" y="266.5">+45 %</text>
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-<text class="nj-charts-val" x="360" y="280.5">+10 %</text>
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-<text class="nj-charts-val" x="407.833" y="294.5">+24 %</text>
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-<line class="nj-charts-grid" x1="457.5" y1="334" x2="457.5" y2="430"/>
-<line class="nj-charts-grid" x1="525.833" y1="334" x2="525.833" y2="430"/>
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-<text class="nj-charts-val" x="537.667" y="347.5">+62 %</text>
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-<text class="nj-charts-val" x="360" y="361.5">+10 %</text>
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-<text class="nj-charts-val" x="353.167" y="375.5">+8 %</text>
-<text class="nj-charts-rowlabel nj-charts-code" x="142" y="410" text-anchor="end">server_config</text>
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-<text class="nj-charts-val" x="486.417" y="396.5">+47 %</text>
-<path class="nj-charts-c1" d="M320.833 401 H364.667 Q368.667 401 368.667 405 V408 Q368.667 412 364.667 412 H320.833 Z"><title>server_config, G&#8203;CC 16, -O0 (debug), 3.13.0, precompiled header: 2,302 ms against 2,025 ms with 3.12.0 (+14 %)</title></path>
-<text class="nj-charts-val" x="373.667" y="410.5">+14 %</text>
-<path class="nj-charts-c3" d="M320.833 415 H368.083 Q372.083 415 372.083 419 V422 Q372.083 426 368.083 426 H320.833 Z"><title>server_config, G&#8203;CC 16, -O0 (debug), 3.13.0, module: 2,326 ms against 2,025 ms with 3.12.0 (+15 %)</title></path>
-<text class="nj-charts-val" x="377.083" y="424.5">+15 %</text>
-<text class="nj-charts-panel" x="8" y="458">G&#8203;CC 16, -O2</text>
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-<line class="nj-charts-grid" x1="252.5" y1="464" x2="252.5" y2="560"/>
-<line class="nj-charts-grid" x1="389.167" y1="464" x2="389.167" y2="560"/>
-<line class="nj-charts-grid" x1="457.5" y1="464" x2="457.5" y2="560"/>
-<line class="nj-charts-grid" x1="525.833" y1="464" x2="525.833" y2="560"/>
-<text class="nj-charts-rowlabel nj-charts-code" x="142" y="491" text-anchor="end">count_numbers</text>
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-<text class="nj-charts-val" x="524" y="477.5">+58 %</text>
-<path class="nj-charts-c1" d="M320.833 482 H412.5 Q416.5 482 416.5 486 V489 Q416.5 493 412.5 493 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O2, 3.13.0, precompiled header: 2,987 ms against 2,336 ms with 3.12.0 (+28 %)</title></path>
-<text class="nj-charts-val" x="421.5" y="491.5">+28 %</text>
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-<text class="nj-charts-val" x="411.25" y="505.5">+25 %</text>
-<text class="nj-charts-rowlabel nj-charts-code" x="142" y="540" text-anchor="end">server_config</text>
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-<text class="nj-charts-val" x="500.083" y="526.5">+51 %</text>
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-<text class="nj-charts-val" x="421.5" y="540.5">+28 %</text>
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-<text class="nj-charts-tick" x="252.5" y="590">&#8722;20 %</text>
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-<text class="nj-charts-tick" x="457.5" y="590">+40 %</text>
-<text class="nj-charts-tick" x="525.833" y="590">+60 %</text>
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docs/mkdocs/docs/images/perf_blog_swar.svg

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docs/mkdocs/docs/images/perf_blog_timeline_accept_twitter.svg

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docs/mkdocs/docs/images/perf_blog_timeline_dump_twitter.svg

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docs/mkdocs/docs/images/perf_blog_timeline_from_cbor_twitter.svg

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-<title id="nj-blog-uc-mac">Use cases: time of each library relative to the fastest, Apple M1 Max</title>
-<desc id="nj-blog-uc-mac-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.00; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.85 doing less, N); nlohmann/json json_document minify: 1.00 (0.85 doing less, N); nlohmann/json json_document write: 1.00 (0.71 doing less, N); yyjson validate: 1.37; yyjson sum: 1.11; yyjson select: 1.25; yyjson edit: 1.45; yyjson minify: 1.23 (1.16 doing less, N); yyjson write: 1.26; simdjson validate: 1.52; simdjson sum: 1.20; simdjson select: 1.33 (0.75 doing less, P); simdjson edit: n/a; simdjson minify: 1.73 (0.18 doing less, P); simdjson write: 2.41; sonic-rs (Rust) validate: 1.93; sonic-rs (Rust) sum: 1.53; sonic-rs (Rust) select: 1.83; sonic-rs (Rust) edit: 2.08; sonic-rs (Rust) minify: 1.93; sonic-rs (Rust) write: 2.38; sonic-cpp validate: no fully validating way (2.53 doing less, U); sonic-cpp sum: no fully validating way (1.86 doing less, U); sonic-cpp select: no fully validating way (2.31 doing less, U); sonic-cpp edit: no fully validating way (1.68 doing less, U); sonic-cpp minify: no fully validating way (2.03 doing less, U); sonic-cpp write: 1.59; simd-json (Rust) validate: 2.07; simd-json (Rust) sum: 1.62; simd-json (Rust) select: 2.38; simd-json (Rust) edit: 2.84; simd-json (Rust) minify: 3.40; simd-json (Rust) write: 3.10; Glaze validate: 2.04; Glaze sum: 3.85; Glaze select: 1.79 (0.82 doing less, P); Glaze edit: 4.41; Glaze minify: 5.19 (1.03 doing less, P); Glaze write: 2.23; Boost.J&#8203;SON validate: 2.56; Boost.J&#8203;SON sum: 1.99; Boost.J&#8203;SON select: 3.27; Boost.J&#8203;SON edit: 3.21; Boost.J&#8203;SON minify: 3.87; Boost.J&#8203;SON write: 3.75; serde_json (Rust) validate: 2.46 (2.23 doing less, U); serde_json (Rust) sum: 2.59; serde_json (Rust) select: 2.39 (2.24 doing less, U); serde_json (Rust) edit: 4.99; serde_json (Rust) minify: 5.85; serde_json (Rust) write: 2.95; nlohmann/json json validate: 2.71; nlohmann/json json sum: 1.96; nlohmann/json json select: 6.87; nlohmann/json json edit: 3.73; nlohmann/json json minify: 4.89; nlohmann/json json write: 2.10; RapidJSON validate: 4.72 (3.09 doing less, U); RapidJSON sum: 4.15 (2.85 doing less, U); RapidJSON select: 5.91 (3.82 doing less, U); RapidJSON edit: 4.82 (3.77 doing less, U); RapidJSON minify: 4.86 (3.60 doing less, U N); RapidJSON write: 5.88.</desc>
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@@ -1,379 +0,0 @@
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-<title id="nj-blog-uc-x86-clang">Use cases: time of each library relative to the fastest, x86-64 with Clang 23</title>
-<desc id="nj-blog-uc-x86-clang-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.00; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.81 doing less, N); nlohmann/json json_document minify: 1.00 (0.83 doing less, N); nlohmann/json json_document write: 1.00 (0.69 doing less, N); yyjson validate: 1.87; yyjson sum: 1.00; yyjson select: 1.23; yyjson edit: 1.43; yyjson minify: 1.16 (1.00 doing less, N); yyjson write: 1.14; sonic-cpp validate: no fully validating way (2.32 doing less, U); sonic-cpp sum: no fully validating way (1.20 doing less, U); sonic-cpp select: no fully validating way (1.53 doing less, U); sonic-cpp edit: no fully validating way (1.24 doing less, U); sonic-cpp minify: no fully validating way (1.38 doing less, U); sonic-cpp write: 1.28; simdjson validate: 2.03; simdjson sum: 1.13; simdjson select: 1.32 (0.57 doing less, P); simdjson edit: n/a; simdjson minify: 1.58 (0.18 doing less, P); simdjson write: 2.00; sonic-rs (Rust) validate: 1.88; sonic-rs (Rust) sum: 1.07; sonic-rs (Rust) select: 1.39; sonic-rs (Rust) edit: 1.90; sonic-rs (Rust) minify: 1.73; sonic-rs (Rust) write: 1.94; Boost.J&#8203;SON validate: 1.79; Boost.J&#8203;SON sum: 1.12; Boost.J&#8203;SON select: 2.24; Boost.J&#8203;SON edit: 2.39; Boost.J&#8203;SON minify: 2.68; Boost.J&#8203;SON write: 2.31; simd-json (Rust) validate: 3.52; simd-json (Rust) sum: 1.80; simd-json (Rust) select: 2.64; simd-json (Rust) edit: 2.88; simd-json (Rust) minify: 3.38; simd-json (Rust) write: 2.21; serde_json (Rust) validate: 2.33 (2.08 doing less, U); serde_json (Rust) sum: 2.22; serde_json (Rust) select: 1.77; serde_json (Rust) edit: 4.54; serde_json (Rust) minify: 4.92; serde_json (Rust) write: 2.15; Glaze validate: 2.23; Glaze sum: 4.03 (3.78 doing less, P); Glaze select: 1.43 (0.62 doing less, P); Glaze edit: 5.53; Glaze minify: 5.77 (0.70 doing less, P); Glaze write: 1.90; nlohmann/json json validate: 2.77; nlohmann/json json sum: 1.44; nlohmann/json json select: 7.56; nlohmann/json json edit: 3.99; nlohmann/json json minify: 4.91; nlohmann/json json write: 1.86; RapidJSON validate: 4.94 (3.76 doing less, U); RapidJSON sum: 2.98 (2.28 doing less, U); RapidJSON select: 4.20 (3.27 doing less, U); RapidJSON edit: 3.06 (2.60 doing less, U); RapidJSON minify: 3.61 (2.65 doing less, U N); RapidJSON write: 2.79.</desc>
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docs/mkdocs/docs/images/perf_blog_usecases_x86-gcc.svg

@@ -1,374 +0,0 @@
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-<title id="nj-blog-uc-x86-gcc">Use cases: time of each library relative to the fastest, x86-64 with G&#8203;CC 16.2</title>
-<desc id="nj-blog-uc-x86-gcc-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.08; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.79 doing less, N); nlohmann/json json_document minify: 1.00 (0.80 doing less, N); nlohmann/json json_document write: 1.00 (0.64 doing less, N); yyjson validate: 1.94; yyjson sum: 1.14; yyjson select: 1.18; yyjson edit: 1.37; yyjson minify: 1.17 (0.95 doing less, N); yyjson write: 1.11; sonic-cpp validate: no fully validating way (2.32 doing less, U); sonic-cpp sum: no fully validating way (1.24 doing less, U); sonic-cpp select: no fully validating way (1.45 doing less, U); sonic-cpp edit: no fully validating way (1.21 doing less, U); sonic-cpp minify: no fully validating way (1.36 doing less, U); sonic-cpp write: 1.45; simdjson validate: 2.11; simdjson sum: 1.00; simdjson select: 1.27 (0.54 doing less, P); simdjson edit: n/a; simdjson minify: 1.54 (0.17 doing less, P); simdjson write: 2.10; sonic-rs (Rust) validate: 1.93; sonic-rs (Rust) sum: 1.13; sonic-rs (Rust) select: 1.34; sonic-rs (Rust) edit: 1.90; sonic-rs (Rust) minify: 1.71; sonic-rs (Rust) write: 2.04; Boost.J&#8203;SON validate: 1.99; Boost.J&#8203;SON sum: 1.27; Boost.J&#8203;SON select: 2.20; Boost.J&#8203;SON edit: 2.30; Boost.J&#8203;SON minify: 2.65; Boost.J&#8203;SON write: 2.36; simd-json (Rust) validate: 3.62; simd-json (Rust) sum: 1.91; simd-json (Rust) select: 2.56; simd-json (Rust) edit: 2.87; simd-json (Rust) minify: 3.35; simd-json (Rust) write: 2.32; RapidJSON validate: 3.71 (3.41 doing less, U); RapidJSON sum: 2.23 (2.09 doing less, U); RapidJSON select: 2.91 (2.73 doing less, U); RapidJSON edit: 2.41 (2.34 doing less, U); RapidJSON minify: 2.68 (2.42 doing less, U N); RapidJSON write: 2.97; serde_json (Rust) validate: 2.39 (2.14 doing less, U); serde_json (Rust) sum: 2.36; serde_json (Rust) select: 1.71; serde_json (Rust) edit: 4.53; serde_json (Rust) minify: 4.89; serde_json (Rust) write: 2.25; Glaze validate: 2.86; Glaze sum: 4.16; Glaze select: 1.79 (0.58 doing less, P); Glaze edit: 4.47; Glaze minify: 4.81 (0.78 doing less, P); Glaze write: 1.96; nlohmann/json json validate: 2.96; nlohmann/json json sum: 1.70; nlohmann/json json select: 7.12; nlohmann/json json edit: 3.83; nlohmann/json json minify: 4.79; nlohmann/json json write: 1.91.</desc>
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-<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="66" text-anchor="end">nlohmann/json json_document</text>
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-<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="426" text-anchor="end">nlohmann/json json</text>
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-<title id="nj-blog-uc-x86-gcc13">Use cases: time of each library relative to the fastest, x86-64 with G&#8203;CC 13</title>
-<desc id="nj-blog-uc-x86-gcc13-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.08; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.83 doing less, N); nlohmann/json json_document minify: 1.00 (0.83 doing less, N); nlohmann/json json_document write: 1.00 (0.71 doing less, N); yyjson validate: 1.81; yyjson sum: 1.28; yyjson select: 1.22; yyjson edit: 1.49; yyjson minify: 1.27 (0.97 doing less, N); yyjson write: 1.14; sonic-cpp validate: no fully validating way (2.24 doing less, U); sonic-cpp sum: no fully validating way (1.28 doing less, U); sonic-cpp select: no fully validating way (1.53 doing less, U); sonic-cpp edit: no fully validating way (1.26 doing less, U); sonic-cpp minify: no fully validating way (1.42 doing less, U); sonic-cpp write: 1.50; simdjson validate: 2.01; simdjson sum: 1.00; simdjson select: 1.35 (0.57 doing less, P); simdjson edit: n/a; simdjson minify: 1.58 (0.22 doing less, P); simdjson write: 2.07; sonic-rs (Rust) validate: 1.79; sonic-rs (Rust) sum: 1.11; sonic-rs (Rust) select: 1.37; sonic-rs (Rust) edit: 1.91; sonic-rs (Rust) minify: 1.73; sonic-rs (Rust) write: 2.07; Boost.J&#8203;SON validate: 1.88; Boost.J&#8203;SON sum: 1.33; Boost.J&#8203;SON select: 2.30; Boost.J&#8203;SON edit: 2.55; Boost.J&#8203;SON minify: 2.92; Boost.J&#8203;SON write: 2.56; simd-json (Rust) validate: 3.35; simd-json (Rust) sum: 1.88; simd-json (Rust) select: 2.61; simd-json (Rust) edit: 2.89; simd-json (Rust) minify: 3.39; simd-json (Rust) write: 2.35; serde_json (Rust) validate: 2.22 (1.98 doing less, U); serde_json (Rust) sum: 2.32; serde_json (Rust) select: 1.75; serde_json (Rust) edit: 4.55; serde_json (Rust) minify: 4.94; serde_json (Rust) write: 2.28; Glaze validate: 2.21; Glaze sum: 4.04; Glaze select: 1.44 (0.60 doing less, P); Glaze edit: 4.85; Glaze minify: 5.10 (0.73 doing less, P); Glaze write: 1.84; nlohmann/json json validate: 2.74; nlohmann/json json sum: 1.67; nlohmann/json json select: 7.24; nlohmann/json json edit: 3.81; nlohmann/json json minify: 4.79; nlohmann/json json write: 1.99; RapidJSON validate: 4.50 (3.40 doing less, U); RapidJSON sum: 2.98 (2.29 doing less, U); RapidJSON select: 3.84 (3.06 doing less, U); RapidJSON edit: 2.92 (2.58 doing less, U); RapidJSON minify: 3.64 (2.64 doing less, U N); RapidJSON write: 3.11.</desc>
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-<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="66" text-anchor="end">nlohmann/json json_document</text>
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docs/mkdocs/docs/js/external-links.js

@@ -1,8 +1,7 @@
 /*
  * Marks links that leave the site with the class "nj-external", which brand.css turns into a small icon in front of
  * the link. A link is external when its host is neither the current one nor the production site. Links in the page
- * actions (edit, raw), buttons, header anchors, a blog post's byline, and links that only wrap an image (badges) are
- * left alone.
+ * actions (edit, raw), buttons, header anchors, and links that only wrap an image (badges) are left alone.
  * Runs through Material's document$ (navigation.instant), so it also applies after an instant page switch.
  */
 (function () {
@@ -18,7 +17,7 @@
             if (a.protocol !== "http:" && a.protocol !== "https:") {
                 continue;
             }
-            if (a.matches(".md-button, .md-content__button, .headerlink, .nj-byline a") || a.querySelector("img, svg")) {
+            if (a.matches(".md-button, .md-content__button, .headerlink") || a.querySelector("img, svg")) {
                 continue;
             }
             a.classList.add("nj-external");

docs/mkdocs/docs/js/fig-charts.js

@@ -104,72 +104,3 @@
         init();
     }
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-
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-   cell is a focusable <g data-tip>: its lines (the first one the heading) are shown on hover, keyboard focus or tap.
-   Without JS, the figure's <desc> and the tables in the appendix carry the same numbers. */
-(function () {
-    "use strict";
-
-    var tip = null;
-    var current = null;
-
-    function show(cell) {
-        if (!tip) {
-            tip = document.createElement("div");
-            tip.className = "nj-heat-tip";
-            tip.setAttribute("role", "tooltip");
-            tip.hidden = true;
-            document.body.appendChild(tip);
-        }
-        if (current) current.classList.remove("nj-heat-on");
-        current = cell;
-        cell.classList.add("nj-heat-on");
-        var lines = (cell.getAttribute("data-tip") || "").split("\n");
-        tip.textContent = "";
-        lines.forEach(function (line, i) {
-            var el = document.createElement(i === 0 ? "strong" : "div");
-            el.textContent = line;
-            tip.appendChild(el);
-        });
-        tip.hidden = false;
-        var r = cell.getBoundingClientRect();
-        var w = tip.offsetWidth, h = tip.offsetHeight;
-        var x = Math.min(Math.max(8, r.left + r.width / 2 - w / 2), document.documentElement.clientWidth - w - 8);
-        var y = r.bottom + 8 + h > window.innerHeight ? r.top - h - 8 : r.bottom + 8;
-        tip.style.left = (x + window.scrollX) + "px";
-        tip.style.top = (y + window.scrollY) + "px";
-    }
-
-    function hide() {
-        if (current) current.classList.remove("nj-heat-on");
-        current = null;
-        if (tip) tip.hidden = true;
-    }
-
-    function init() {
-        hide();
-        Array.prototype.forEach.call(document.querySelectorAll("svg.nj-charts--heat .nj-heat-cell"), function (cell) {
-            if (cell.dataset.njHeatReady) return;
-            cell.dataset.njHeatReady = "1";
-            cell.addEventListener("mouseenter", function () { show(cell); });
-            cell.addEventListener("mouseleave", hide);
-            cell.addEventListener("focus", function () { show(cell); });
-            cell.addEventListener("blur", hide);
-            // a tap also focuses the cell; a tap elsewhere or Escape hides the tooltip
-            cell.addEventListener("click", function (ev) { ev.stopPropagation(); show(cell); });
-        });
-    }
-
-    document.addEventListener("click", hide);
-    document.addEventListener("keydown", function (ev) { if (ev.key === "Escape") hide(); });
-    window.addEventListener("scroll", hide, { passive: true });
-
-    if (typeof document$ !== "undefined" && document$ && typeof document$.subscribe === "function") {
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-        init();
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docs/mkdocs/includes/glossary.md

@@ -8,7 +8,6 @@
 *[BDFL]: Benevolent Dictator for Life
 *[BJData]: Binary JData
 *[BON8]: Binary Object Notation 8
-*[BSL]: Boost Software License
 *[BSON]: Binary JSON
 *[CBOR]: Concise Binary Object Representation
 *[CC0]: Creative Commons Zero
@@ -17,7 +16,6 @@
 *[CUDA]: Compute Unified Device Architecture
 *[CVE]: Common Vulnerabilities and Exposures
 *[DOM]: Document Object Model
-*[EDG]: Edison Design Group, maker of a C++ compiler front end
 *[EOF]: End of File
 *[FAQ]: Frequently Asked Questions
 *[GCC]: GNU Compiler Collection
@@ -33,11 +31,9 @@
 *[JSONC]: JSON with Comments
 *[JWCC]: JSON With Commas and Comments
 *[LLDB]: LLVM Debugger
-*[LTO]: Link-Time Optimization
 *[LTS]: Long-Term Support
 *[MinGW]: Minimalist GNU for Windows
 *[MIT]: Massachusetts Institute of Technology
-*[MPL]: Mozilla Public License
 *[MsgPack]: MessagePack
 *[MSVC]: Microsoft Visual C++
 *[NaN]: Not a Number
@@ -46,7 +42,6 @@
 *[NEON]: Arm SIMD instruction set extension
 *[NUL]: Null character (U+0000, byte value 0)
 *[ODR]: One Definition Rule
-*[PCH]: Precompiled Header
 *[REUSE]: Software licensing specification by the Free Software Foundation Europe
 *[RFC]: Request for Comments
 *[RTTI]: Runtime Type Information
@@ -65,4 +60,3 @@
 *[UDLs]: User-defined literals
 *[URL]: Uniform Resource Locator
 *[UTF]: Unicode Transformation Format
-*[XOR]: Exclusive or

docs/mkdocs/mkdocs.yml

@@ -104,8 +104,6 @@ nav:
           - 'v2.0.0': home/releases/v2.0.0.md
           - 'v1.1.0': home/releases/v1.1.0.md
           - 'v1.0.0': home/releases/v1.0.0.md
-      - Blog:
-          - 'How 3.13.0 got faster': home/blog/how_3_13_0_got_faster.md
       - home/design_goals.md
       - home/architecture.md
       - home/customers.md
@@ -611,7 +609,6 @@ plugins:
         Home:
           - index.md
           - home/*.md
-          - home/blog/*.md
         Features:
           - features/*.md
           - features/binary_formats/*.md

docs/mkdocs/requirements.txt

@@ -1,8 +1,8 @@
 wheel==0.48.0
 
 mkdocs==1.6.1                                       # documentation framework
-mkdocs-git-revision-date-localized-plugin==1.6.0    # plugin "git-revision-date-localized"
-mkdocs-material==9.7.7                             # theme for mkdocs
+mkdocs-git-revision-date-localized-plugin==1.6.2    # plugin "git-revision-date-localized"
+mkdocs-material==9.8.0                             # theme for mkdocs
 mkdocs-material-extensions==1.3.1                   # extensions
 mkdocs-minify-plugin==0.8.0                         # plugin "minify"
 mkdocs-redirects==1.2.3                             # plugin "redirects"

docs/mkdocs/scripts/figures/data/perf_suite.csv

@@ -1,183 +0,0 @@
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-Accept/canada,ns,1.29488e+07,2.3494e+06,5.512
-Accept/citm_catalog,ns,6.53091e+06,923408,7.073
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-Accept/jeopardy,ns,2.20758e+08,5.92935e+07,3.723
-Accept/signed_ints,ns,1.17358e+08,2.82947e+07,4.148
-Accept/small_signed_ints,ns,5.75113e+07,1.80352e+07,3.189
-Accept/twitter,ns,2.51345e+06,483792,5.195
-Accept/unsigned_ints,ns,1.16297e+08,2.97181e+07,3.913
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-BinaryToCbor/16,ns,244.687,49.6325,4.930
-BinaryToCbor/16384,ns,952.115,413.62,2.302
-BinaryToCbor/2048,ns,328.419,125.183,2.624
-BinaryToCbor/256,ns,264.678,90.8937,2.912
-BinaryToCbor/32,ns,251.632,50.4059,4.992
-BinaryToCbor/32768,ns,1541.05,802.721,1.920
-BinaryToCbor/4096,ns,406.957,177.412,2.294
-BinaryToCbor/512,ns,289.876,102.063,2.840
-BinaryToCbor/64,ns,254.928,84.6434,3.012
-BinaryToCbor/8,ns,247.618,49.3761,5.015
-BinaryToCbor/8192,ns,514.281,256.456,2.005
-Copy/canada,ns,3.78116e+06,2.92734e+06,1.292
-Copy/citm_catalog,ns,1.7026e+06,1.51108e+06,1.127
-Copy/twitter,ns,840201,767400,1.095
-CopyAssign/canada,ns,3.86416e+06,2.94449e+06,1.312
-CopyAssign/citm_catalog,ns,1.76529e+06,1.58608e+06,1.113
-CopyAssign/twitter,ns,884985,790724,1.119
-CopyOnly/canada,ns,1.60229e+06,1.57507e+06,1.017
-CopyOnly/citm_catalog,ns,786244,817481,0.962
-CopyOnly/twitter,ns,423631,420649,1.007
-CopyRing/canada,ns,3.86433e+06,2.99657e+06,1.290
-CopyRing/citm_catalog,ns,1.84434e+06,1.60579e+06,1.149
-CopyRing/twitter,ns,951510,818035,1.163
-DestroyOnly/canada,ns,2.22138e+06,1.40157e+06,1.585
-DestroyOnly/citm_catalog,ns,926244,711471,1.302
-DestroyOnly/twitter,ns,416055,336082,1.238
-Diff/canada,ns,3.98055e+07,3.80466e+06,10.462
-Diff/citm_catalog,ns,7.1859e+06,1.12351e+06,6.396
-Diff/twitter,ns,5.11261e+06,661062,7.734
-Dump/canada / -,ns,6.95189e+06,2.33647e+06,2.975
-Dump/canada / 4,ns,9.09882e+06,3.10291e+06,2.932
-Dump/citm_catalog / -,ns,1.42117e+06,295678,4.806
-Dump/citm_catalog / 4,ns,1.98589e+06,422600,4.699
-Dump/floats / -,ns,6.4332e+07,2.37747e+07,2.706
-Dump/floats / 4,ns,7.25695e+07,2.46207e+07,2.947
-Dump/jeopardy / -,ns,2.06771e+08,3.17494e+07,6.513
-Dump/jeopardy / 4,ns,2.27967e+08,3.53626e+07,6.447
-Dump/signed_ints / -,ns,2.40551e+07,1.0736e+07,2.241
-Dump/signed_ints / 4,ns,3.25192e+07,1.1333e+07,2.869
-Dump/small_signed_ints / -,ns,1.81398e+07,8.12457e+06,2.233
-Dump/small_signed_ints / 4,ns,2.55296e+07,8.80796e+06,2.898
-Dump/twitter / -,ns,1.43584e+06,214252,6.702
-Dump/twitter / 4,ns,1.63183e+06,253042,6.449
-Dump/unsigned_ints / -,ns,2.39512e+07,8.11916e+06,2.950
-Dump/unsigned_ints / 4,ns,3.22761e+07,8.58925e+06,3.758
-Equal/canada,ns,473767,349284,1.356
-Equal/citm_catalog,ns,279548,263329,1.062
-Equal/twitter,ns,145555,131450,1.107
-Flatten/canada,ns,2.94475e+07,1.11184e+07,2.649
-Flatten/citm_catalog,ns,6.7155e+06,3.07325e+06,2.185
-Flatten/twitter,ns,3.66077e+06,2.10599e+06,1.738
-FlattenOrdered/citm_catalog,ns,2.62026e+08,1.42645e+06,183.691
-FlattenOrdered/twitter,ns,5.1275e+07,890275,57.595
-FromBinaryBuffer/bjdata / canada,ns,8.81972e+06,4.16727e+06,2.116
-FromBinaryBuffer/bjdata / twitter,ns,3.32045e+06,976266,3.401
-FromBinaryBuffer/bjdata_optimized / canada,ns,9.2386e+06,2.47996e+06,3.725
-FromBinaryBuffer/bjdata_optimized / twitter,ns,3.30526e+06,985625,3.353
-FromBinaryBuffer/bson / canada,ns,1.00372e+07,4.31554e+06,2.326
-FromBinaryBuffer/bson / citm_catalog,ns,4.07611e+06,1.60647e+06,2.537
-FromBinaryBuffer/bson / twitter,ns,3.25635e+06,936933,3.476
-FromBinaryBuffer/cbor / canada,ns,8.89562e+06,2.11517e+06,4.206
-FromBinaryBuffer/cbor / citm_catalog,ns,3.94234e+06,1.45242e+06,2.714
-FromBinaryBuffer/cbor / floats,ns,3.0473e+07,5.47969e+06,5.561
-FromBinaryBuffer/cbor / jeopardy,ns,3.73185e+08,1.14934e+08,3.247
-FromBinaryBuffer/cbor / signed_ints,ns,3.66673e+07,9.88892e+06,3.708
-FromBinaryBuffer/cbor / twitter,ns,3.23196e+06,953415,3.390
-FromBinaryBuffer/msgpack / canada,ns,8.85983e+06,2.12215e+06,4.175
-FromBinaryBuffer/msgpack / citm_catalog,ns,3.84901e+06,1.4503e+06,2.654
-FromBinaryBuffer/msgpack / jeopardy,ns,3.73143e+08,1.11034e+08,3.361
-FromBinaryBuffer/msgpack / twitter,ns,3.2397e+06,954811,3.393
-FromBinaryBuffer/ubjson / canada,ns,8.84059e+06,4.20402e+06,2.103
-FromBinaryBuffer/ubjson / citm_catalog,ns,4.0708e+06,1.78566e+06,2.280
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-FromBinaryBuffer/ubjson_optimized / canada,ns,8.88909e+06,2.42788e+06,3.661
-FromBinaryBuffer/ubjson_optimized / twitter,ns,3.29784e+06,974810,3.383
-FromBinaryFile/bjdata / twitter,ns,1.09208e+07,1.94678e+06,5.610
-FromBinaryFile/bson / twitter,ns,1.07209e+07,1.84971e+06,5.796
-FromBinaryFile/cbor / canada,ns,1.49218e+07,4.48832e+06,3.325
-FromBinaryFile/cbor / twitter,ns,1.03718e+07,1.57388e+06,6.590
-FromBinaryFile/ubjson / canada,ns,1.43414e+07,6.42996e+06,2.230
-FromBinaryFile/ubjson / twitter,ns,1.09266e+07,1.97275e+06,5.539
-FromBinaryShape/containers / bjdata,ns,1.46977e+07,7.23447e+06,2.032
-FromBinaryShape/containers / bson,ns,1.75596e+07,7.88867e+06,2.226
-FromBinaryShape/containers / cbor,ns,1.46488e+07,4.15792e+06,3.523
-FromBinaryShape/containers / msgpack,ns,1.45853e+07,3.89266e+06,3.747
-FromBinaryShape/containers / ubjson,ns,1.49773e+07,7.23987e+06,2.069
-FromBinaryShape/containers / ubjson_optimized,ns,1.54989e+07,4.55976e+06,3.399
-FromBinaryShape/nested / bjdata,ns,96825.9,38335.1,2.526
-FromBinaryShape/nested / bson,ns,101356,42620.2,2.378
-FromBinaryShape/nested / cbor,ns,94929.8,35845.6,2.648
-FromBinaryShape/nested / msgpack,ns,92610.2,35078.3,2.640
-FromBinaryShape/nested / ubjson,ns,96090.6,38285.6,2.510
-FromBinaryShape/scalars / bjdata,ns,2.52616e+07,1.15856e+07,2.180
-FromBinaryShape/scalars / cbor,ns,2.62118e+07,5.88743e+06,4.452
-FromBinaryShape/scalars / msgpack,ns,2.50706e+07,5.65159e+06,4.436
-FromBinaryShape/scalars / ubjson,ns,2.53402e+07,1.16191e+07,2.181
-FromCborChunkedString/10000 chunks,ns,91845.9,82875.5,1.108
-FromMsgpack/canada,ns,1.48853e+07,4.56225e+06,3.263
-FromMsgpack/citm_catalog,ns,9.3559e+06,2.26246e+06,4.135
-FromMsgpack/floats,ns,6.12575e+07,2.86709e+07,2.137
-FromMsgpack/jeopardy,ns,1.16767e+09,1.90153e+08,6.141
-FromMsgpack/signed_ints,ns,6.38812e+07,3.28867e+07,1.942
-FromMsgpack/small_signed_ints,ns,6.44688e+07,3.44227e+07,1.873
-FromMsgpack/twitter,ns,1.02787e+07,1.48541e+06,6.920
-FromMsgpack/unsigned_ints,ns,5.7784e+07,2.83078e+07,2.041
-"GetArray<std::array<int, 1000>>",ns,2274.63,654.431,3.476
-GetArray<std::deque<int>>,ns,8288.3,1175.75,7.049
-GetArray<std::set<int>>,ns,60017.4,42504.9,1.412
-GetArray<std::vector<int>>,ns,6785.73,681.915,9.951
-GetMap/citm_catalog,ns,3.60313e+06,2.48546e+06,1.450
-GetVectorDouble/floats,ns,6.83612e+06,656162,10.418
-GetVectorInt/signed_ints,ns,8.22365e+06,3.46495e+06,2.373
-Iterate/canada,ns,897083,328035,2.735
-Iterate/citm_catalog,ns,305421,171245,1.784
-Iterate/twitter,ns,89996.6,61975.8,1.452
-JsonPointerAt/citm_catalog,ns,1.89898e+06,1.17751e+06,1.613
-JsonPointerAt/twitter,ns,817946,611519,1.338
-JsonPointerContains/citm_catalog,ns,2.8177e+06,1.26796e+06,2.222
-JsonPointerContains/twitter,ns,1.33508e+06,628630,2.124
-JsonPointerParse/citm_catalog,ns,5.81355e+06,2.24831e+06,2.586
-JsonPointerParse/twitter,ns,2.47971e+06,1.02159e+06,2.427
-JsonPointerToString/citm_catalog,ns,6.7858e+06,1.93924e+06,3.499
-JsonPointerToString/twitter,ns,2.23096e+06,834416,2.674
-ParseFILE/canada,ns,5.41907e+07,1.46942e+07,3.688
-ParseFILE/citm_catalog,ns,3.59542e+07,7.58092e+06,4.743
-ParseFILE/twitter,ns,1.4087e+07,3.44991e+06,4.083
-ParseFile/canada,ns,1.82792e+07,6.46954e+06,2.825
-ParseFile/citm_catalog,ns,8.12979e+06,2.52336e+06,3.222
-ParseFile/floats,ns,1.31229e+08,4.81407e+07,2.726
-ParseFile/jeopardy,ns,3.38017e+08,1.62098e+08,2.085
-ParseFile/signed_ints,ns,1.28749e+08,4.62304e+07,2.785
-ParseFile/small_signed_ints,ns,6.47398e+07,3.34103e+07,1.938
-ParseFile/twitter,ns,3.43041e+06,1.37495e+06,2.495
-ParseFile/unsigned_ints,ns,1.24001e+08,4.74365e+07,2.614
-ParseIndented/canada / 4,ns,3.4977e+07,5.37149e+06,6.512
-ParseIndented/citm_catalog / 4,ns,7.52423e+06,1.81376e+06,4.148
-ParseIndented/jeopardy / 4,ns,3.45046e+08,1.33383e+08,2.587
-ParseIndented/twitter / 4,ns,3.72283e+06,1.12645e+06,3.305
-ParseStreamValues/ndjson,ns,7.15876e+06,3.76965e+06,1.899
-ParseStreamValues/numbers,ns,1.92619e+06,383138,5.027
-ParseString/canada,ns,1.55213e+07,4.62776e+06,3.354
-ParseString/citm_catalog,ns,7.56417e+06,1.77967e+06,4.250
-ParseString/floats,ns,1.21779e+08,2.83035e+07,4.303
-ParseString/jeopardy,ns,3.16817e+08,1.30897e+08,2.420
-ParseString/signed_ints,ns,1.22931e+08,3.19852e+07,3.843
-ParseString/small_signed_ints,ns,6.2685e+07,2.49764e+07,2.510
-ParseString/twitter,ns,3.2961e+06,1.04867e+06,3.143
-ParseString/unsigned_ints,ns,1.21229e+08,3.29241e+07,3.682
-ParseStringOrdered/canada,ns,1.5388e+07,4.5275e+06,3.399
-ParseStringOrdered/citm_catalog,ns,1.15204e+07,1.68115e+06,6.853
-ParseStringOrdered/jeopardy,ns,3.73533e+08,1.13397e+08,3.294
-ParseStringOrdered/twitter,ns,4.5979e+06,948606,4.847
-Patch/canada,ns,1.03684e+07,3.47719e+06,2.982
-Patch/citm_catalog,ns,2.74522e+06,1.74191e+06,1.576
-Patch/twitter,ns,1.57928e+06,888657,1.777
-SaxParse/canada,ns,1.31023e+07,3.26697e+06,4.011
-SaxParse/citm_catalog,ns,6.54642e+06,966806,6.771
-SaxParse/twitter,ns,2.53102e+06,483052,5.240
-ToCbor/canada,ns,1.41339e+06,556912,2.538
-ToCbor/citm_catalog,ns,1.04743e+06,259178,4.041
-ToCbor/floats,ns,9.04677e+06,1.90094e+06,4.759
-ToCbor/jeopardy,ns,7.39339e+07,2.20678e+07,3.350
-ToCbor/signed_ints,ns,1.15333e+07,2.827e+06,4.080
-ToCbor/small_signed_ints,ns,1.0394e+07,2.47974e+06,4.192
-ToCbor/twitter,ns,658566,143397,4.593
-ToCbor/unsigned_ints,ns,8.17966e+06,2.81588e+06,2.905
-ToJsonStrings/copy,ns,6.12e+06,5.65303e+06,1.083
-ToJsonStrings/move,ns,6.13061e+06,3.13303e+06,1.957
-Unflatten/canada,ns,4.25276e+07,1.10995e+07,3.831
-Unflatten/citm_catalog,ns,1.01866e+07,3.62185e+06,2.813
-Unflatten/twitter,ns,4.74536e+06,2.21103e+06,2.146

docs/mkdocs/scripts/figures/data/perf_timeline.csv

@@ -1,354 +0,0 @@
-index,commit,date,pr,subject,parse_twitter,parse_citm,parse_canada,parse_citm_compact,parse_twitter_ifstream,accept_twitter,dump_twitter,dump_citm,dump_canada,dump4_citm,from_cbor_twitter,to_cbor_twitter,copy_destroy_citm,equal_citm,view_parse_twitter,view_parse_citm,view_parse_canada
-0,55f93686c0,2025-04-11,,Merge branch 'release/3.12.0',3571.487,8219.609,17049.073,4366.792,3846.006,2394.213,1441.213,1375.446,7510.989,1917.809,3463.281,695.524,1643.327,1956.891,,,
-1,1705bfe914,2025-04-11,4727,:bookmark: set version to 3.12.0 (#4727),3589.331,8245.422,17079.250,4422.711,3894.787,2397.597,1440.546,1377.745,7514.698,1922.371,3498.997,695.559,1655.240,1967.301,,,
-2,4cca3b9cb2,2025-04-13,4738,Fix warning and add emscripten CI step (#4738),3559.657,8195.105,17066.291,4373.011,3794.269,2388.900,1419.182,1355.724,7420.703,1912.038,3468.667,664.214,1631.610,1939.475,,,
-3,96c1b52f1c,2025-04-15,4742,Fix conversion to std::optional (#4742),3573.838,8157.276,16993.208,4383.656,3858.927,2395.092,1438.169,1372.208,7497.776,1925.481,3482.185,667.895,1633.619,1946.687,,,
-4,88c92e605c,2025-04-16,4744,Fix compilation failure and warnings with NVHPC (#4744),3563.149,8039.911,16922.739,4381.927,3768.560,2385.086,1407.564,1345.578,7370.063,1897.474,3462.010,662.955,1623.286,1925.804,,,
-5,c67d538274,2025-04-17,4749,Fix C4702 warning and extend MSVC CI job (#4749),3585.422,8251.057,17050.448,4400.542,3896.586,2390.655,1440.391,1371.722,7453.474,1921.277,3478.523,667.911,1636.206,1939.531,,,
-6,756ca22ec5,2025-04-23,4736,Provide fallback for missing `char8_t` support (#4736),3559.146,8139.703,17085.114,4387.658,3856.745,2392.849,1424.997,1370.599,7477.537,1907.661,3484.427,665.541,1634.156,1957.401,,,
-7,6b9199382b,2025-04-27,4763,Add missing header (#4763),3541.323,8077.761,17011.636,4359.183,3842.380,2396.686,1421.116,1363.737,7431.375,1902.909,3474.250,664.442,1625.644,1934.732,,,
-8,3b02afb9d9,2025-04-28,4760,Specialize char_traits for std::byte to fix from_msgpack (fixes #4756) (#4760),3583.070,8198.146,17134.698,4381.743,3899.872,2409.185,1440.233,1380.810,7504.838,1921.781,3500.125,666.078,1657.207,1966.036,,,
-9,eef76c200e,2025-04-28,4764,Make library work with C++20 modules (#4764),3528.529,8080.458,16936.656,4330.570,3764.287,2363.848,1407.851,1358.079,7356.239,1897.423,3455.287,665.194,1632.255,1937.675,,,
-10,dff2b4756c,2025-04-29,4765,fix: BJData size calculation overflow (#4765),3553.706,8141.375,17047.511,4360.144,3797.070,2389.756,1417.737,1364.718,7454.313,1921.962,3479.878,666.456,1644.760,1944.696,,,
-11,9110918cf8,2025-05-04,4748,Fix typos (#4748),3563.682,8176.427,17239.354,4398.055,3891.669,2399.782,1441.669,1387.133,7516.073,1925.323,3483.271,669.348,1647.760,1957.747,,,
-12,46e7cd3dc2,2025-05-16,4775,Replace deprecated std::is_trivial in C++26 (#4775),3565.242,8195.396,17135.646,4373.479,3851.604,2392.258,1418.425,1370.958,7464.854,1909.844,3485.046,665.606,1643.155,1952.329,,,
-13,828c891427,2025-05-16,4786,Extend type_name() to invalid type (#4786),3549.573,8103.761,17066.198,4359.911,3804.849,2389.121,1428.584,1366.405,7424.838,1914.434,3452.497,667.452,1632.750,1928.324,,,
-14,4b17f90f65,2025-05-22,4609,Add `ignore_trailing_commas` option (#4609),3544.662,8132.052,16997.375,4344.592,3825.765,2382.755,1408.435,1367.468,7460.448,1924.522,3434.062,733.089,1631.356,1891.572,,,
-15,b19f058465,2025-06-01,4802,Encode infinity and NaN as float for MsgPack and CBOR (#4802),3550.020,8126.438,17350.885,4327.596,3825.419,2389.356,1409.422,1376.649,7363.802,1921.226,3441.081,683.190,1624.144,1886.388,,,
-16,cf16c5ab9f,2025-06-02,4805,Use binary_t::value_type (#4805),3551.735,8143.521,17153.291,4309.477,3829.229,2387.640,1428.550,1385.585,7415.271,1932.347,3425.838,657.735,1631.586,1888.954,,,
-17,d70e46bc65,2025-06-25,4830,:bug: add missing header to input_adapters.hpp (#4830),3546.448,8157.469,17062.364,4335.300,3805.221,2382.796,1422.863,1382.581,7411.401,1928.676,3433.190,691.842,1632.972,1892.453,,,
-18,30d27df61c,2025-07-31,4871,Fix CI (#4871),3570.015,8150.859,17070.625,4330.078,3806.505,2400.329,1434.947,1381.065,7425.718,1931.556,3429.632,656.545,1633.515,1892.916,,,
-19,efcf9efb4f,2025-08-02,4873,Fixes #4854 Explicitly handle nullptr in sax_parse (#4873),3520.381,8050.719,16883.042,4331.820,3861.906,2368.069,1408.435,1375.954,7363.651,1898.466,3432.992,653.988,1634.141,1894.948,,,
-20,4106af8d92,2025-08-20,4896,":rotating_light: suppress cppcoreguidelines-c-copy-assignment-signature,misc-unconventional-assign-operator (#4896)",3540.599,8175.265,17010.438,4345.182,3866.833,2393.935,1435.100,1389.496,7453.724,1945.791,3433.169,657.446,1638.434,1900.360,,,
-21,a63795caf1,2025-10-22,4791,:rotating_light: avoid deprecation warning (#4791),3550.057,8174.646,16983.177,4363.521,3888.336,2393.305,1423.434,1376.334,7469.407,1936.013,3447.279,666.706,1645.354,1903.707,,,
-22,1cc56b2dcd,2025-10-23,4957,Address CWG issue 2521 (#4957),3557.396,8119.651,17072.730,4351.881,3834.739,2386.097,1442.100,1393.245,7474.463,1932.315,3446.883,660.187,1638.983,1896.000,,,
-23,54be9b04f0,2025-10-23,4960,:page_facing_up: update REUSE (#4960),3554.625,8098.287,17115.219,4324.578,3809.950,2390.791,1424.488,1376.715,7422.828,1913.208,3424.693,659.030,1623.405,1892.756,,,
-24,29913ca760,2025-10-25,4963,Add char8_t* overload for _json and _json_pointer (#4963),3544.899,8169.203,17007.844,4353.594,3797.630,2392.108,1423.032,1375.216,7349.787,1909.897,3428.771,655.625,1635.273,1891.018,,,
-25,515d994acb,2026-01-01,5044,:page_facing_up: adjust year (#5044),3524.610,8059.521,16949.416,4313.508,3773.750,2364.742,1410.427,1372.988,7382.438,1915.502,3403.159,643.968,1618.972,1884.213,,,
-26,8f75700141,2026-01-11,4958,support types convertible to string_view as JSON keys (#4958),3546.757,8142.599,17103.386,4327.739,3825.990,2388.540,1420.515,1379.309,7413.062,1924.540,3433.677,658.266,1628.079,1890.759,,,
-27,457bc283ff,2026-01-12,5039,fix(cbor): reject overflowing negative integers (#5039),3508.883,8077.291,16930.011,4305.982,3785.698,2378.693,1425.526,1366.111,7407.042,1929.142,3478.909,657.722,1636.304,1944.681,,,
-28,e3014f162a,2026-01-13,5052,Fix conversion to std::optional (#5052),3547.995,8140.052,17010.031,4321.914,3797.807,2385.856,1430.414,1386.202,7407.260,1930.403,3462.213,657.829,1629.579,1932.066,,,
-29,5ed07097fa,2026-01-13,5050,Fix -Wtautological-constant-out-of-range-compare in serializer (#5050),3544.136,8180.208,17033.209,4339.591,3799.779,2391.940,1427.870,1387.871,7368.765,1922.321,3454.938,659.367,1630.707,1959.722,,,
-30,25f48639c7,2026-01-23,5016,Reference tuple from json (#5016),3563.180,8209.037,17030.969,4388.675,3895.086,2392.088,1430.666,1393.853,7528.567,1934.347,3481.351,677.234,1645.418,1957.591,,,
-31,f8eee1bb79,2026-02-07,5071,Annotate unreachable comment-scanner switch paths to satisfy C26819 (#5071),3508.000,8128.750,16958.959,4315.235,3797.237,2371.963,1425.146,1374.867,7453.381,1930.211,3456.508,658.568,1629.188,1909.736,,,
-32,fd17b0889e,2026-05-08,5139,Remove nullptr safety check from sax_parse functions (#5139),3544.101,8033.021,16963.292,4334.102,3800.736,2382.583,1419.050,1361.745,7357.073,1907.153,3429.315,657.041,1618.815,1937.829,,,
-33,62f3b41b30,2026-05-08,5090,fix: treat single-element brace-init as copy/move instead of wrapping in array (#5074) (#5090),3550.323,8168.713,17060.031,4349.417,3794.110,2380.583,1416.822,1361.182,7369.651,1897.717,3466.731,659.297,1631.463,1941.905,,,
-34,4fad446897,2026-05-10,5162,docs: add IDs to @requirement tags to fix Doxygen autolinking (#5162),3545.440,8031.891,17069.448,4324.698,3802.862,2383.513,1422.768,1384.602,7325.776,1917.606,3469.787,659.011,1631.296,1940.370,,,
-35,a0a4e7cc0b,2026-05-13,5152,Add front methods to json_pointers (implements #4889) (#5152),3582.898,8215.010,17034.448,4345.515,3891.513,2396.572,1432.733,1395.714,7554.119,1934.008,3484.859,659.298,1642.314,1957.356,,,
-36,93e49decbd,2026-05-14,5167,Fix incomplete-type error in set_parents with ordered_json (#5167),3555.224,8147.771,17017.073,4320.846,3831.318,2386.750,1435.840,1385.578,7436.864,1927.483,3466.508,658.409,1632.724,1939.528,,,
-37,7192763f15,2026-05-14,5163,Fix compile error when using nlohmann ordered_map with WITH_DEFAULT macros (#5163),3520.675,8039.145,16892.291,4303.448,3769.198,2363.337,1410.030,1364.679,7380.797,1913.285,3437.278,660.130,1630.738,1943.235,,,
-38,5a05627b1f,2026-05-14,5169,:rotating_light: fix warning (#5169),3600.555,8160.854,16979.031,4324.070,3887.823,2389.157,1430.983,1387.106,7509.984,1912.601,3473.713,663.279,1652.982,1958.774,,,
-39,bb5404bb86,2026-05-15,5164,Fix GCC C++20 modules compilation #5103 (#5164),3543.823,8120.266,17015.395,4349.300,3794.880,2364.178,1414.408,1374.548,7484.218,1920.495,3444.266,699.326,1626.241,1954.688,,,
-40,b1bb9fce0c,2026-05-15,3929,Fix for printing long doubles bug in dump_float (#3929),3549.378,8089.891,16934.927,4313.310,3824.802,2386.958,1412.164,1385.425,7417.869,1930.513,3461.151,651.557,1618.735,1944.450,,,
-41,cba5dc0ed8,2026-05-16,4563,New macros for the named JSON convertor generation (#4563),3544.657,8168.182,16990.886,4327.688,3806.963,2370.975,1421.629,1390.206,7454.151,1919.284,3452.456,677.413,1623.622,1941.921,,,
-42,47202c804a,2026-05-18,5171,Add missing overload to ordered_map::find (#5171),3527.542,8168.312,17141.989,4409.456,3887.378,2397.007,1428.765,1387.033,7495.604,1935.710,3485.088,660.155,1648.977,1951.430,,,
-43,58cfecf7f7,2026-05-18,5151,Serialize enum (#5151),3521.302,8100.104,16805.489,4288.463,3763.971,2381.494,1408.713,1383.059,7328.261,1915.202,3440.372,648.726,1617.661,1922.608,,,
-44,584e6b1cfb,2026-05-22,5187,Fix: update() parent pointers not updated after recursive merge with JSON_DIAGNOSTICS (#5187),3550.639,8083.463,17055.198,4326.833,3804.257,2381.519,1432.039,1381.986,7377.844,1915.159,3460.750,656.873,1631.527,1940.953,,,
-45,02dfbea39d,2026-06-17,5209,added explicit instantiations of 'has_from_json' and 'has_to_json' for std_fs::path (#5209),3552.209,8215.474,17167.760,4338.404,3845.144,2398.026,1425.012,1387.629,7458.614,1931.388,3475.343,658.183,1644.329,1958.324,,,
-46,fc1df0b7db,2026-06-23,5172,:recycle: remove unnecessary if (#5172),3562.088,8175.531,17044.042,4336.583,3863.651,2404.695,1425.872,1389.434,7523.855,1914.128,3481.000,653.259,1639.515,1957.649,,,
-47,c5b2b26fdc,2026-06-29,5217,:memo: fix docs (#5217),3526.825,8052.307,17000.011,4343.963,3793.412,2388.194,1416.706,1374.177,7361.646,1904.008,3463.919,658.322,1627.765,1921.887,,,
-48,b7566c6293,2026-06-30,5161,Harden JSON_HAS_RANGES detection for incomplete C++20 ranges implementations (#5161),3538.995,8071.787,17120.751,4318.797,3772.445,2384.008,1421.440,1385.239,7419.292,1898.929,3431.466,647.948,1602.258,1928.644,,,
-49,adf78d3a76,2026-06-30,5215,Minor: unique_ptr template resolution workaround for MSVC (#5215),3550.380,8138.026,17036.802,4366.062,3842.430,2389.536,1426.658,1385.609,7428.787,1915.233,3467.188,658.332,1636.158,1942.556,,,
-50,272411c5e6,2026-06-30,5218,Overwork project infrastructure (#5218),3547.487,8087.250,16962.198,4341.969,3793.831,2387.509,1420.888,1381.072,7450.078,1930.003,3466.193,659.676,1631.329,1943.043,,,
-51,730b57775d,2026-07-01,5222,:bug: avoid assertion in patch (#5222),3539.912,8169.771,17027.229,4345.151,3790.753,2376.552,1421.263,1386.717,7399.985,1923.237,3455.722,653.609,1630.914,1934.028,,,
-52,ca49ab6123,2026-07-02,5223,Extend value to arrays when using JSON pointers (#5223),3550.341,8113.787,16951.313,4346.805,3793.097,2391.224,1409.695,1380.075,7374.073,1926.401,3458.438,659.382,1629.387,1941.306,,,
-53,8d7e0046f4,2026-07-02,5224,Add std::format and fmt support (#5224),3546.935,8170.406,16968.927,4346.906,3814.956,2387.612,1424.861,1386.542,7350.765,1900.376,3461.177,662.476,1633.858,1930.434,,,
-54,31dd15b258,2026-07-02,5221,Fix ambiguous static_cast (#5221),3551.945,8213.000,17131.271,4373.620,3845.763,2393.074,1438.633,1385.769,7471.146,1927.804,3486.568,662.015,1631.810,1958.901,,,
-55,eed1587000,2026-07-05,5234,Reconstruct lexer diagnostics lazily for seekable input (#120) (#5234),3145.909,5311.094,15381.843,4292.961,3851.260,1966.833,1422.598,1365.461,7443.276,1920.467,3467.060,702.832,1637.587,1905.758,,,
-56,83c87cb9e0,2026-07-05,5233,Read binary strings/blobs in bulk chunks with a memcpy fast path (#5233),3141.867,5259.485,15454.959,4326.664,3797.198,1987.623,1406.492,1372.765,7424.729,1899.726,2363.895,667.502,1630.097,1888.392,,,
-57,acf076a677,2026-07-06,5238,Fix ADL leak of nlohmann::detail through basic_json's default base class (#5238),3152.153,5277.073,15291.407,4338.828,3839.331,1995.524,1429.960,1365.917,7456.776,1907.928,2398.016,670.257,1627.590,1897.997,,,
-58,c05c5e229b,2026-07-07,5241,Add missing copyright notices to SBOM (#5241),3147.485,5268.865,15319.584,4321.823,3796.972,1981.167,1432.689,1371.264,7465.416,1918.083,2388.154,667.119,1630.745,1891.583,,,
-59,366f3d26e5,2026-07-08,5235,Replace snprintf with a branch-free writer for \uXXXX escapes (#5235),3127.641,5272.302,15425.239,4340.459,3850.357,1997.957,1459.603,1356.461,7509.703,1899.916,2366.966,668.383,1624.981,1889.145,,,
-60,f8e99e856c,2026-07-09,5248,Fix nvcc CUDA 12.0/12.1 C++20 ranges parse error (#3907) (#5248),3132.099,5226.375,15164.510,4301.901,3769.651,1967.647,1456.759,1365.810,7530.724,1908.635,2381.610,683.815,1616.699,1879.795,,,
-61,855f511db4,2026-07-09,5250,Fix stale Clang -Weverything suppression comments; drop -Wno-missing-noreturn (#5250),3126.792,5208.338,15352.520,4293.596,3800.544,1969.497,1458.601,1329.851,7372.849,1876.404,2368.894,662.173,1603.881,1874.673,,,
-62,d0a43141ea,2026-07-09,5253,Fix #3868: Remove operator!= to enable P2468R2 rewritten candidate synthesis (#5253),3165.182,5270.458,15479.031,4302.729,3845.646,1989.231,1474.135,1343.312,7443.282,1887.909,2392.523,670.395,1634.871,1894.474,,,
-63,b630f5e9c7,2026-07-10,5260,Fix container input_adapter SFINAE for lvalue-only ADL begin/end (#5260),3128.117,5263.807,15375.677,4330.544,3819.953,1982.196,1454.088,1339.062,7364.683,1877.699,2361.482,666.486,1616.514,1920.626,,,
-64,c60217e801,2026-07-11,5205,fix: support constructing json from C++20 range views (#4916) (#5205),3117.539,5206.552,15308.166,4320.513,3798.713,1983.458,1447.072,1350.950,7357.213,1875.632,2340.731,662.905,1633.357,1934.261,,,
-65,fe2bcc080f,2026-07-11,5266,Custom BinaryType direct assignment (#5266),3174.528,5284.562,15383.645,4328.120,3895.086,1996.913,1478.427,1355.569,7512.115,1899.236,2398.490,672.118,1642.910,1967.660,,,
-66,ca76c37650,2026-07-11,5265,Add iterator+sentinel tests and docs for binary deserializers (#5265),3134.265,5218.021,15352.521,4306.284,3791.612,1967.824,1451.953,1358.685,7508.828,1891.697,2377.848,665.474,1631.495,1934.907,,,
-67,c197feff81,2026-07-12,5268,Extend memcpy fast path to sized sentinels (e.g. std::counted_iterator) (#5268),3116.271,5207.146,15415.771,4272.443,3815.851,1984.966,1451.103,1341.093,7328.037,1865.385,2383.169,664.494,1617.967,1915.428,,,
-68,1c5a953de5,2026-07-19,5276,reject unpaired UTF-16 surrogates in wide-string input (#5276),3155.360,5299.631,15419.812,4302.089,3853.104,1987.259,1468.653,1349.665,7549.432,1911.365,2457.555,680.311,1653.282,1955.673,,,
-69,3565f40229,2026-07-20,5284,reject negative UBJSON/BJData string length (#5284),3170.456,5301.698,15404.416,4351.226,3893.594,1997.034,1470.907,1358.245,7491.480,1909.601,2401.384,671.260,1639.865,1963.899,,,
-70,9a3ebb9456,2026-07-23,5287,validate BSON document size against the bytes read (#5287),3157.646,5264.062,15305.271,4338.672,3839.643,1987.196,1461.356,1351.630,7444.791,1890.626,2398.503,665.262,1655.798,1930.268,,,
-71,8ec98e2c9e,2026-07-27,5313,adding cleanups to bson writer (#5313),3150.448,5268.948,15445.927,4308.612,3805.005,1989.643,1466.348,1349.591,7326.453,1895.842,2393.278,708.164,1644.025,1946.652,,,
-72,2e23687092,2026-07-28,5314,to_bson() silently emits corrupt documents when a length exceeds INT32_MAX (#5314),3146.534,5254.547,15445.250,4304.008,3798.620,1986.260,1459.735,1345.534,7517.651,1903.996,2395.155,674.344,1644.565,1952.682,,,
-73,868506dcc0,2026-07-30,5335,Fix CBOR half-float assertion bounds (#5335),3167.086,5267.068,15397.979,4351.011,3883.135,2003.345,1468.939,1360.483,7455.230,1909.055,2406.305,679.942,1643.646,1945.639,,,
-74,dd24e2dffd,2026-07-30,5332,check all BSON reads and add an EOF check for booleans (#5332),3138.315,5284.833,15399.166,4310.513,3847.630,1980.682,1464.104,1344.108,7445.146,1901.512,2400.532,670.850,1635.196,1900.946,,,
-75,fd72ecfc8c,2026-07-31,5301,validate ndarray element types in write_bjdata_ndarray (#5301),3164.662,5262.141,15399.010,4287.271,3849.318,1988.186,1460.688,1353.767,7458.380,1893.669,2398.485,668.466,1644.018,1921.615,,,
-76,bc48951128,2026-07-31,5323,Fix UBJSON high-precision floating-point overflow handling (#5323),3155.628,5289.864,15474.375,4324.253,3888.966,2015.068,1477.846,1354.622,7480.730,1905.566,2415.428,668.997,1641.776,1911.819,,,
-77,d94cbd99dc,2026-07-31,5274,reject CBOR array/map length equal to the indefinite-length marker (#5274),3144.041,5272.193,15466.980,4338.735,3848.849,1999.231,1459.129,1358.119,7507.307,1901.807,2394.972,667.016,1635.960,1899.878,,,
-78,2222d386c9,2026-07-31,5339,fix: check CBOR tagged subtype reads (#5339),3095.768,5137.792,15064.146,4258.977,3755.229,1965.900,1454.890,1338.066,7399.068,1883.624,2358.193,660.190,1618.172,1939.713,,,
-79,585929bff9,2026-08-03,5289,Fix Clang deprecation warning for json_pointer operator== with ordered_json (#5289),3142.341,5259.360,15258.271,4275.479,3807.672,1969.704,1453.688,1337.633,7451.037,1879.447,2364.966,661.560,1635.617,1945.709,,,
-80,5f121d8c50,2026-08-03,5336,avoid sign extension in char_traits<signed char>::to_int_type (#5336),3145.000,5264.880,15441.521,4269.632,3796.781,1983.497,1440.810,1325.232,7427.750,1880.047,2361.899,663.772,1621.595,1912.378,,,
-81,68f0722a19,2026-08-03,5342,remove discarded array from parent object in end_array (#5342),3161.273,5269.907,15312.469,4335.433,3840.510,1995.965,1465.745,1355.934,7474.901,1895.483,2401.197,657.397,1634.791,1901.902,,,
-82,dca9d49a33,2026-08-05,5348,reject out-of-range code points in UTF-32 wide-string input (#5348),3119.753,5210.979,15209.260,4273.984,3799.034,1995.297,1459.456,1342.982,7431.646,1891.478,2370.364,653.618,1633.585,1882.753,,,
-83,9a091d2b82,2026-08-05,5362,Do not write BJData ndarrays whose size overflows std::size_t (#5362),3137.381,5257.312,15286.084,4308.500,3805.325,1995.140,1468.138,1354.729,7510.088,1893.036,2384.577,659.394,1628.260,1890.245,,,
-84,d5647e6a3b,2026-08-05,5355,Resolve the TODO(niels) in get_ubjson_string (#5355),3121.278,5249.927,15246.011,4292.737,3800.490,1967.087,1443.762,1333.226,7368.953,1862.131,2347.852,644.647,1623.909,1889.958,,,
-85,bacdabd176,2026-08-05,5361,Fix start_pos() for strings containing escape sequences (#5361),3114.653,5251.619,15253.907,4331.818,3786.156,1960.676,1442.388,1330.247,7354.724,1863.306,2351.588,650.781,1623.543,1886.671,,,
-86,1c136a66c4,2026-08-06,5363,Move the CBOR doc block to the function it describes (#5363),3124.274,5209.615,15411.897,4293.320,3812.156,1982.854,1457.653,1345.680,7422.343,1884.848,2387.050,656.076,1627.620,1878.737,,,
-87,6285225fd0,2026-08-12,5211,Fix integer comparison bug (#5211),3159.557,5291.323,15395.395,4329.836,3867.200,1989.476,1456.052,1359.795,7526.860,1879.642,2396.137,659.077,1638.176,1900.416,,,
-88,b5378e8deb,2026-08-19,5331,Fix CBOR tag handlers not recognizing tags 0-5 and 21-23 (#5331),3172.476,5239.812,15479.917,4295.539,3871.289,2003.439,1473.447,1343.742,7516.875,1888.412,2400.572,645.588,1641.621,1886.531,,,
-89,2f025f401e,2026-08-25,5380,Throw other_error.502 when UBJSON use_type is set without use_size (#5380),3155.873,5190.312,15144.406,4286.388,3793.805,1968.199,1442.240,1340.929,7373.610,1860.543,2370.570,648.906,1631.207,1893.750,,,
-90,35705d79d8,2026-08-28,5414,Fix update(merge_objects=true) throwing on primitive-to-object merge (#5414),3169.029,5252.578,15387.292,4340.690,3893.646,1979.616,1472.286,1361.543,7491.302,1903.909,2401.404,659.396,1641.697,1912.409,,,
-91,137a40b9aa,2026-09-05,5459,Compare integers with floats exactly instead of widening the integer (#5459),3134.229,5259.349,15404.541,4300.146,3846.646,1992.155,1467.919,1351.774,7467.146,1887.255,2391.467,660.347,1631.735,1891.751,,,
-92,3c875683a5,2026-09-05,5461,Make diff() linear when an array shrinks (#5461),3141.068,5259.000,15271.166,4319.659,3797.088,1983.450,1455.354,1354.676,7444.860,1891.687,2389.333,657.163,1632.998,1887.016,,,
-93,09b6b6b5ba,2026-09-05,5455,Fix to_bjdata() emitting unparsable output when _ArraySize_ is not an array (#5455),3161.542,5253.047,15311.718,4291.388,3834.264,1992.744,1472.685,1357.680,7409.479,1889.287,2389.501,698.680,1628.237,1888.705,,,
-94,faa35cc647,2026-09-09,5484,Skip integer conversion in accept()/SAX validation when the value is unused (#5484),3103.654,5222.453,15458.573,4215.765,3804.320,1935.161,1468.660,1353.499,7452.052,1883.191,2383.524,654.441,1631.700,1885.664,,,
-95,6d86cc0f6b,2026-09-09,5490,Speed up whitespace skipping in the lexer (#5490),3181.328,5276.318,15307.312,4262.771,3877.401,1977.062,1465.196,1356.119,7594.177,1906.814,2388.615,684.926,1636.950,1893.526,,,
-96,c05347dd54,2026-09-09,5475,Undefine the four JSON_HEDLEY_* macros that leak after including json.hpp (#5475),3147.932,5156.625,15347.990,4217.505,3871.812,1982.807,1458.787,1354.934,7639.328,1879.823,2370.342,674.625,1637.257,1903.903,,,
-97,d6660cf718,2026-09-09,5485,Route hand-rolled diagnostic pragmas through Hedley (#5485),3116.151,5215.531,15257.499,4189.979,3835.023,1974.111,1459.363,1342.996,7553.802,1887.698,2379.999,669.934,1635.350,1877.492,,,
-98,c9477ccf91,2026-09-09,5496,Throw when JSON Patch remove's target path resolves through a primitive or null parent (#5496),3138.841,5258.401,15315.417,4201.008,3874.682,1967.630,1446.393,1335.060,7542.708,1870.111,2390.141,668.484,1634.138,1886.981,,,
-99,8c38e270b5,2026-09-09,5497,Reject JSON Patch move when from is a proper prefix of path (#5497),3183.820,5280.000,15346.969,4222.164,3839.596,1970.753,1470.428,1351.838,7515.344,1895.809,2389.731,673.696,1633.247,1889.546,,,
-100,a316738cfa,2026-09-09,5471,Add JSON_HEDLEY_WARN_UNUSED_RESULT to the current accept() overloads (#5471),3175.891,5281.302,15397.062,4240.576,3934.333,1981.765,1475.890,1353.387,7625.104,1896.181,2401.097,669.729,1646.133,1895.638,,,
-101,c9f1d2d646,2026-09-09,5477,Broaden JSON_HEDLEY_WARN_UNUSED_RESULT coverage to pure query functions (#5477),3171.706,5286.880,15430.844,4264.242,3880.943,1979.990,1472.289,1357.283,7569.854,1904.026,2407.487,671.673,1641.521,1889.053,,,
-102,8e26b9d4b3,2026-09-09,5495,Make contains(json_pointer) return false instead of throwing on unrepresentable array-index tokens (#5495),3163.789,5240.755,15337.698,4226.154,3880.956,1971.912,1475.322,1357.125,7632.281,1904.060,2401.190,678.863,1638.371,1903.385,,,
-103,b17c272f46,2026-09-09,5472,Reserve capacity in from_json() object conversion when the target container supports it (#5472),3152.899,5257.645,15401.000,4210.846,3885.123,1989.159,1476.637,1359.851,7639.396,1898.981,2408.243,670.075,1633.528,1894.086,,,
-104,3e2de32226,2026-09-10,5516,Remove unused iomanip include (#5516),3141.349,5253.657,15364.074,4203.969,3847.620,1968.422,1455.035,1352.754,7582.494,1882.051,2371.814,663.504,1630.172,1870.223,,,
-105,d69fb8654d,2026-09-10,5501,Return the parsed value by move from from_cbor() and friends (#5501),3133.485,5231.662,15309.926,4183.200,3835.662,1971.125,1462.447,1349.563,7479.136,1904.202,1595.991,661.519,1630.278,1883.994,,,
-106,4a93aa4e2f,2026-09-10,5283,"Speed up parsing of contiguous input (numbers, strings, UTF-8) (#5283)",1963.879,4221.308,11609.531,3278.497,3857.880,927.779,1483.726,1357.793,7483.343,1906.916,1481.419,676.438,1643.746,1895.551,,,
-107,bfb07786cd,2026-09-10,5473,Fix to_bjdata() silently truncating out-of-range _ArrayData_ elements (#5473),1941.894,4204.971,11726.688,3264.055,3808.784,923.797,1453.071,1351.760,7458.125,1891.470,1473.508,662.164,1633.043,1888.548,,,
-108,ff80ed3295,2026-09-11,5285,"Speed up dump(), and keep it from overflowing the stack (#5285)",1939.289,4175.541,11781.291,3233.302,3816.101,914.071,441.200,540.473,6895.041,852.214,1478.197,656.635,1632.675,1885.303,,,
-109,da42a627dc,2026-09-11,5449,Stop dump() from heap-allocating its output adapter per call (#5449),1937.658,4200.966,11639.198,3235.493,3827.695,909.901,448.948,537.008,6909.036,839.027,1479.968,659.210,1643.621,1878.065,,,
-110,1dc1d09fc6,2026-09-11,5457,Do not search a container for the value the callback rejected (#5457),1937.459,4140.078,11576.803,3271.838,3845.193,924.316,450.148,539.031,6848.776,844.624,1470.333,671.563,1645.624,1900.347,,,
-111,fae364db24,2026-09-11,5458,Move the scanned string into the value instead of copying it (#5458),1986.146,4110.787,11757.157,3150.932,3830.550,918.517,442.629,539.606,6913.104,843.920,1417.037,655.259,1628.224,1892.991,,,
-112,dd50f0eb16,2026-09-11,5502,Stop CBOR indefinite-length strings from recursing per chunk (#5502),1987.853,4033.182,11613.834,3116.378,3841.164,915.943,442.366,539.480,6864.130,836.458,1431.035,656.146,1599.574,1885.858,,,
-113,4bb2de8cc5,2026-09-11,5503,Reject a nested BJData ndarray dimension vector where it is read (#5503),1981.298,4086.276,11569.240,3141.539,3829.870,923.087,444.038,539.863,6800.724,835.434,1429.637,655.448,1628.999,1879.300,,,
-114,44f8ec30e9,2026-09-11,5504,Bound UBJSON optimized arrays of a valueless type (#5504),2005.265,4092.265,11730.198,3130.635,3863.992,925.033,448.222,542.323,6893.078,849.901,1437.855,662.171,1638.306,1896.324,,,
-115,0dd8ca9023,2026-09-11,5505,Read MessagePack containers without recursing per nesting level (#5505),2019.983,4105.305,11862.979,3142.581,3891.601,927.092,447.942,543.936,6939.963,845.634,1442.889,656.578,1637.512,1897.815,,,
-116,91ab3e81f5,2026-09-11,5506,Read CBOR containers and tags without recursing per nesting level (#5506),1986.334,4039.961,11554.094,3118.761,3783.101,912.504,440.410,534.894,6831.943,834.661,1439.061,655.287,1615.619,1869.912,,,
-117,a14619b354,2026-09-11,5507,Read UBJSON and BJData containers without recursing per nesting level (#5507),2011.959,4095.868,11782.688,3135.264,3873.604,926.014,447.638,541.304,6905.838,846.051,1468.512,664.161,1629.083,1898.772,,,
-118,0452641c18,2026-09-11,5508,Read BSON documents without recursing per nesting level (#5508),1974.160,4043.887,11662.938,3095.011,3832.744,916.007,439.914,534.149,6904.453,835.615,1450.792,648.298,1616.917,1874.133,,,
-119,aa391dc0a5,2026-09-11,5520,Fix two develop CI regressions: dump() nodiscard warning and binary-reader const-correctness (#5520),2003.010,4068.010,11771.364,3137.266,3825.247,924.668,442.416,539.478,6847.083,841.996,1460.659,649.378,1633.738,1885.897,,,
-120,a50c2537eb,2026-09-12,5476,Reserve capped array capacity in json_sax_dom_parser::start_array() for definite-length binary arrays (#5476),1986.488,4063.883,11588.333,3077.995,3827.479,908.419,440.959,539.114,6806.177,833.555,1452.851,662.422,1627.995,1915.388,,,
-121,c0b2878a44,2026-09-13,5493,Swap diagnostic positions in basic_json::swap() (#5493),2010.881,4081.057,11734.730,3130.919,3882.258,925.490,450.092,542.953,6925.188,848.486,1480.051,698.636,1643.508,1933.941,,,
-122,1da2f68992,2026-09-14,5522,Only reserve array capacity if the array type supports it (#5522),1972.122,4048.622,11775.062,3107.938,3803.528,909.385,441.204,535.885,6793.927,842.843,1446.330,658.787,1619.239,1899.164,,,
-123,6487678bc5,2026-09-15,5464,Fix swap(array_t&)/swap(object_t&) to update parent pointers under JSON_DIAGNOSTICS (#5464),2023.028,4116.169,11737.438,3165.172,3893.266,924.912,448.959,541.529,6970.438,852.039,1483.231,689.631,1635.240,1937.356,,,
-124,c72f37a40d,2026-09-15,5443,Support custom object/array types and improve template parameter handling (#5443),2001.617,4076.547,11666.583,3109.756,3918.206,923.197,450.592,542.266,6901.703,846.558,1468.284,660.116,1641.586,1905.840,,,
-125,502e9d66f6,2026-09-16,5479,Fix to_bjdata() emitting the Draft-3-only 'B' marker in default Draft-2 mode (#5479),1970.935,4018.060,11445.500,3079.409,3809.050,910.459,444.217,539.291,6851.407,833.755,1444.697,698.040,1626.601,1889.024,,,
-126,c41152e620,2026-09-16,5494,Fall back to plain-object encoding when to_bjdata()'s _ArrayType_ annotation is not a string (#5494),1979.481,4054.688,11734.292,3085.542,3819.351,916.992,445.126,539.870,6853.005,833.190,1457.166,665.391,1629.586,1888.734,,,
-127,e564136c22,2026-09-22,5465,Make diff() account for member order in ordered_json objects (#5465),1970.519,4063.744,11605.198,3087.497,3848.867,915.695,447.051,539.711,6835.172,841.402,1452.004,664.560,1640.751,1890.473,,,
-128,e485441123,2026-09-22,5466,Restore a duplicate key's prior value when the callback rejects its new value (#5466),2012.920,4099.265,11796.895,3156.818,3913.812,931.464,451.403,541.419,6981.041,846.536,1469.521,704.138,1633.327,1905.709,,,
-129,a2b19d6158,2026-09-22,5467,Honor allow_exceptions=false for excessive array/object size (out_of_range.408) (#5467),1996.478,4084.422,11734.208,3129.099,3850.854,923.499,446.555,539.379,6949.427,842.029,1453.166,694.200,1631.133,1888.865,,,
-130,d2c1a6a272,2026-09-22,5468,"Reject array insert(pos, first, last) iterators not pointing into an array (#5468)",1983.767,4066.651,11618.667,3128.505,3848.427,914.900,447.603,541.973,6915.265,844.307,1458.762,677.699,1638.789,1892.443,,,
-131,0b20b7e622,2026-09-22,5469,Reject MessagePack/BSON binary subtypes that don't fit their wire format (#5469),2010.548,4097.476,11681.218,3121.010,3866.146,925.619,448.533,540.786,6957.000,843.349,1463.518,658.302,1630.857,1902.522,,,
-132,1054b2097e,2026-09-23,5286,Speed up binary writing: value-type output sink + byte-swap number encoding (#5286),1989.739,4101.393,12034.438,3157.240,3853.987,910.115,449.084,555.970,6884.386,864.526,1471.905,656.635,1661.806,1926.233,,,
-133,ed513715a8,2026-09-24,5534,Document that a NUL byte in the input is treated as end of input (#5534),2016.236,4104.763,11906.323,3141.138,3936.240,916.611,455.397,562.053,6987.917,871.110,1475.622,657.877,1676.934,1936.557,,,
-134,56b3ee566c,2026-09-24,5389,Fix stack overflow when copying a deeply nested value (#5387) (#5389),1998.356,4051.206,11660.865,3101.107,3834.672,910.072,452.943,544.464,6908.974,849.212,1460.691,638.644,1650.749,1914.423,,,
-135,918da64657,2026-09-24,5542,Keep BJData ndarray annotations that would not survive a round trip as objects (#5542),2003.009,4042.969,11517.375,3095.122,3815.360,908.444,448.415,539.423,6911.041,840.044,1449.543,671.530,1651.709,1908.408,,,
-136,8699de3064,2026-09-24,5555,Stop allocating the BJData excluded-marker list per container (#5555),2001.718,4071.333,11686.427,3122.065,3796.757,900.895,447.123,539.918,6860.765,844.752,1444.435,646.608,1644.943,1879.295,,,
-137,2e91641de2,2026-09-24,5544,"Test JSON_BRACE_INIT_COPY_SEMANTICS for real, and fix one-element tuples under it (#5544)",2004.785,4083.914,11662.270,3119.602,3917.914,922.465,454.869,547.631,6987.234,853.010,1469.612,649.946,1672.246,1913.098,,,
-138,7c90ec2323,2026-09-24,5546,Hash deeply nested values without recursing per nesting level (#5546),1952.912,4071.159,11594.927,3117.497,3793.052,900.729,444.245,539.787,6854.406,841.264,1457.530,643.139,1638.578,1890.482,,,
-139,4daca40d7b,2026-09-24,5547,Merge deeply nested objects without recursing per nesting level (#5547),2008.226,4104.399,11619.542,3148.604,3918.175,921.207,457.191,547.553,6942.265,855.352,1464.974,651.924,1665.232,1915.869,,,
-140,01b53c8c15,2026-09-25,5552,Keep JSON_DIAGNOSTICS parent pointers of ordered_json members after erase() and update() (#5552),1979.354,4061.378,11603.480,3098.586,3875.258,919.125,455.911,546.269,6940.026,849.511,1461.751,648.841,1660.978,1917.254,,,
-141,abbe52d6de,2026-09-25,5344,Add JSON_PRECISE_STREAM_POSITION to leave the character that terminates a number in the stream (#5344),2001.170,4081.617,11653.531,3131.331,3876.208,915.153,453.436,546.720,6971.864,848.900,1463.182,647.946,1662.943,1906.246,,,
-142,02dd3e67f2,2026-09-25,5390,Fix stack overflow and exponential runtime when comparing nested values (#5390),1987.861,4074.039,11596.000,3161.284,3901.497,919.541,447.553,543.948,6910.162,845.668,1455.759,664.224,1652.074,1930.575,,,
-143,465407f3ce,2026-09-25,2818,Improve error message for const fields (#2818),1975.274,4118.565,11863.448,3130.541,3880.764,910.767,452.904,545.363,6906.890,843.118,1459.728,645.770,1654.265,1934.900,,,
-144,632a5812a8,2026-09-25,5272,Support zero-member types in NLOHMANN_DEFINE_TYPE_* macros (#4041) (#5272),1963.323,4021.526,11747.959,3102.006,3784.896,904.545,444.355,543.748,6840.604,841.416,1438.306,639.223,1649.816,1930.274,,,
-145,d19f7f5dce,2026-09-25,5185,Fix BSON conformance issue (#5185),1958.606,4048.536,11541.011,3086.805,3817.875,900.452,446.001,544.071,6824.323,837.078,1971.245,641.271,1651.209,1934.647,,,
-146,c60a0bc336,2026-09-25,5573,Allocate the deep copy's key scratch space with the provided allocator (#5573),1965.216,4021.459,11630.855,3074.078,3807.258,902.782,444.394,542.562,6919.969,840.942,1975.668,645.827,1637.429,1918.607,,,
-147,1e44262091,2026-09-25,5560,Make JSON_STRICT_NUL_HANDLING part of the ABI tag (#5560),1961.862,4069.617,11594.083,3117.500,3817.758,909.186,448.820,544.420,6845.802,844.016,1977.909,645.864,1651.269,1937.217,,,
-148,95e9a5931c,2026-09-25,5553,"Write BSON in linear time, without recursing per nesting level (#5553)",1965.832,4033.394,11589.364,3120.422,3792.091,905.110,446.984,543.328,6794.244,844.943,1991.659,640.188,1647.675,1928.562,,,
-149,fe4a544c7e,2026-09-27,5515,handled when size exceed uint32 (#5515),1998.244,4047.208,11755.209,3091.776,3815.000,908.733,447.990,546.295,6903.084,850.946,1993.351,645.487,1654.343,1933.385,,,
-150,4fa95d9810,2026-09-27,5583,Remove unreachable branches from the binary writer (#5583),1983.323,4038.331,11666.480,3092.841,3844.935,910.149,449.697,541.110,6840.583,830.604,1979.750,653.542,1650.670,1928.883,,,
-151,6178982b8d,2026-09-27,5582,Compare unordered objects by key below the nesting bound (#5582),1971.706,4073.498,11600.646,3132.700,3830.323,910.231,448.982,538.812,6836.770,846.149,2007.607,657.180,1653.089,1934.675,,,
-152,f7972970a4,2026-09-27,5584,Throw instead of writing MessagePack lengths beyond UINT32_MAX (#5584),1969.417,4013.021,11602.447,3083.552,3842.495,904.223,447.444,542.170,6862.735,839.628,2000.766,655.034,1653.006,1939.922,,,
-153,6bd106893a,2026-09-27,5559,Fix CBOR tag handling in cbor_tag_handler_t::store for non-binary items (#5559),1969.250,4034.693,11691.500,3119.171,3827.860,916.053,455.026,542.577,6886.360,839.718,2012.919,653.031,1651.090,1931.698,,,
-154,1e101ecac1,2026-09-27,2998,Add BON8 support (#2998),1975.804,4082.375,11658.542,3192.828,3758.141,907.029,444.920,556.470,6844.698,849.276,1977.153,649.181,1645.306,1920.836,,,
-155,9e1a09eec0,2026-09-28,5594,Name the key type when rejecting non-string CBOR/MessagePack map keys (#5594),2006.582,4151.784,11788.532,3156.156,3845.052,915.647,454.027,557.846,6814.282,864.094,2021.072,654.095,1663.051,1947.078,,,
-156,fc03b9912e,2026-09-28,5597,"Look up the locale decimal point at conversion time, not lexer construction (#5597)",2020.431,4172.916,12716.958,3196.958,3909.774,910.001,449.314,547.334,6900.968,852.306,2048.019,665.843,1696.937,1982.586,,,
-157,5b9ffae8bb,2026-09-30,5616,Move the float conversion chain out of the lexer (#5616),1992.332,4167.328,12638.573,3212.515,3842.885,906.649,446.941,539.674,6952.672,839.042,2021.057,695.813,1684.689,1967.216,,,
-158,d268eaa693,2026-09-30,5617,Convert floats with Eisel-Lemire when std::from_chars is unavailable (#5617),1987.608,4086.125,11507.062,3170.013,3830.425,898.856,445.077,542.854,6919.568,839.210,2021.918,666.925,1701.466,1951.211,,,
-159,65af260117,2026-09-30,5609,Move instead of deep-copy ordered_json values when an object grows (#5609),1998.981,4134.057,11592.855,3192.779,3863.005,904.702,446.575,539.685,6850.886,840.845,2035.646,680.331,1682.755,1968.744,,,
-160,6a8a7735ed,2026-09-30,5614,Do not throw in contains() for an empty array reference token (#5614),2008.447,4144.024,11612.176,3165.468,3842.060,905.045,443.941,539.755,6846.042,846.248,1998.713,669.752,1684.717,1953.487,,,
-161,0050d0f7a4,2026-09-30,5637,Share one nesting depth limit between all bounded descents (#5637),2021.078,4170.581,11589.886,3224.963,3937.021,906.411,448.033,541.177,6911.391,848.641,2040.978,670.005,1703.593,1984.639,,,
-162,68beba727c,2026-09-30,5679,Fix from_json() for enums with underlying type bool (#5679),1986.468,4139.033,11632.833,3201.351,3798.006,888.464,438.471,535.903,6843.110,836.030,1996.109,685.053,1672.430,1940.598,,,
-163,fc4c9c3446,2026-09-30,5680,Fix clear() to also reset the subtype of a binary value (#5680),1972.561,4094.867,11540.157,3155.722,3833.925,893.243,445.764,539.739,6848.562,843.068,2016.293,664.788,1685.759,1965.342,,,
-164,678fd3017b,2026-09-30,5681,Fix element path for map/unordered_map JSON_DIAGNOSTICS errors (#5681),2014.783,4164.471,11563.614,3219.865,3891.917,892.727,445.945,542.044,6900.807,844.422,2034.323,669.901,1688.051,1981.601,,,
-165,6d7845d207,2026-09-30,5683,Fix deprecated json_pointer/string operator== warning in value() (#5683),1965.197,4105.789,11501.364,3157.544,3800.289,898.122,445.399,539.685,6900.433,834.541,2000.133,652.354,1670.945,1960.876,,,
-166,42f89e3130,2026-09-30,5684,Let to_json(std::optional<T>) propagate exceptions from T's to_json (#5684),2016.899,4156.430,11476.489,3216.315,3895.245,908.714,444.300,541.764,6923.422,839.459,2018.934,672.859,1689.306,1987.428,,,
-167,6218aa212b,2026-09-30,5687,Throw std::length_error for operator[](SIZE_MAX) instead of corrupting the array (#5687),1989.158,4149.156,11547.229,3193.015,3845.187,905.308,446.389,541.290,6853.266,843.028,2037.245,661.213,1681.390,1966.649,,,
-168,1151826508,2026-09-30,5691,Take diff()'s fast path unless the object type reorders members (#5691),1991.280,4147.341,11570.312,3171.182,3847.333,904.510,441.250,539.803,6885.776,836.303,2018.693,665.307,1685.990,1970.057,,,
-169,e444a66276,2026-09-30,5693,Copy values before inserting an initializer list into an array (#5693),2000.774,4175.507,11546.979,3189.357,3841.169,897.455,442.384,539.493,6839.688,836.213,2014.519,667.390,1685.418,1968.991,,,
-170,bfea6f36d3,2026-09-30,5694,Fix to_msgpack() reading the inactive number union member (#5694),1997.465,4144.279,11549.781,3224.287,3855.120,899.475,441.995,539.924,6903.776,839.550,2019.396,664.487,1688.249,1954.211,,,
-171,5b11a0282c,2026-09-30,5697,Exchange the CustomBaseClass subobject in basic_json::swap() (#5697),1987.983,4074.349,11483.114,3174.632,3841.604,893.256,438.279,535.885,6866.641,834.328,1996.396,660.828,1676.300,1936.210,,,
-172,44a88d85be,2026-09-30,5698,Fix NLOHMANN_JSON_SERIALIZE_ENUM_STRICT's from_json message (#5698),1972.237,4125.945,11373.917,3158.716,3810.039,890.097,438.075,534.577,6867.432,842.045,2028.150,664.206,1681.353,1936.231,,,
-173,bfe0f32d71,2026-09-30,5699,Fix std::terminate and null pointer access in input_stream_adapter (#5699),2014.371,4159.779,11667.416,3200.425,3876.135,911.716,448.788,543.198,6932.657,852.397,2056.197,668.764,1699.573,1984.479,,,
-174,4bb1b14b06,2026-09-30,5702,Trim the compiler-appended NUL from wide/UTF string literals too (#5702),1979.723,4105.685,11603.562,3180.932,3846.698,906.188,443.969,534.534,6837.479,840.588,2006.043,654.851,1672.289,1965.408,,,
-175,5bd766aa50,2026-09-30,5703,Move to_bson's binary subtype check into calc_bson_sizes (#5703),1999.606,4183.386,11588.646,3192.771,3844.425,900.169,446.795,541.406,6888.114,847.107,2022.637,663.480,1686.702,1974.777,,,
-176,6ae17630a4,2026-09-30,5705,"Reject integral keys for contains(), find(), and count() at compile time (#5705)",2000.405,4157.120,11551.656,3197.417,3891.646,903.558,448.544,541.553,6914.203,848.561,2042.578,663.661,1691.910,1974.341,,,
-177,7fd6895788,2026-09-30,5706,Hide a discarded container's content from the parser callback (#5706),1971.987,4075.362,11463.219,3164.909,3797.453,889.534,443.974,535.026,6857.323,835.793,2025.343,651.970,1687.670,1951.428,,,
-178,66877675b1,2026-09-30,5719,"Check the iterator range for binary values in basic_json(first, last) (#5719)",1970.369,4104.886,11534.635,3168.601,3796.291,897.271,444.655,538.917,6826.990,842.445,2016.962,650.099,1673.940,1953.693,,,
-179,2ea6d8c127,2026-09-30,5720,Require the found key to equal the looked-up key when comparing objects (#5720),2015.556,4188.886,11567.125,3251.890,3863.818,903.970,448.691,540.422,6912.255,843.774,2044.479,653.832,1676.634,1951.959,,,
-180,67435c9c7e,2026-09-30,5721,Give a deep copy its type only after its container exists (#5721),1994.257,4160.658,11600.553,3218.367,3880.128,900.769,449.260,541.607,6899.448,841.635,2043.909,666.759,1694.646,1974.861,,,
-181,6fc0d501f3,2026-09-30,5610,Move the user-defined string literals to <nlohmann/json_literals.hpp> and add JSON_NO_AUTOMATIC_UDLS (#5610),2021.715,4187.888,11647.594,3209.388,3925.060,911.591,450.961,544.303,6975.265,845.109,2049.853,670.295,1697.019,1987.428,,,
-182,fdcc569eee,2026-09-30,5692,Use only documented StringType members in json_pointer (#5692),1965.264,4147.273,11378.188,3159.364,3787.758,889.399,447.397,535.062,6809.698,835.116,2015.202,656.241,1689.072,1955.238,,,
-183,6a073dbae4,2026-09-30,5695,Give operator>> a strong exception-safety guarantee (#5695),2010.979,4211.982,11698.218,3205.401,3897.172,898.499,445.961,545.225,6898.870,847.042,2051.316,664.716,1706.401,1981.247,,,
-184,3b6ae43c53,2026-09-30,5598,Add JSON_DISABLE_TUPLE_REFERENCE_CONVERSION to fix std::tuple conversions (#5598),2025.122,4195.468,11682.199,3204.529,3924.068,904.766,448.209,544.669,7041.276,849.103,2047.488,665.592,1695.987,1984.755,,,
-185,7d7055ec50,2026-09-30,5723,Fix stack overflow converting deep values between specializations (#5723),1985.310,4117.099,11457.052,3157.591,3832.175,895.910,442.225,535.237,6864.375,833.653,2001.760,679.826,1674.819,1956.998,,,
-186,35802e78d6,2026-09-30,5735,Remove dead Makefile targets; document macro_builder; tidy serve_header (#5735),2004.498,4163.065,11590.594,3184.810,3902.229,906.494,447.394,539.542,6923.969,845.596,2044.457,666.187,1692.019,1977.030,,,
-187,c261578431,2026-09-30,5730,Deduplicate binary reader/writer helpers and fix stale comments (#5730),1968.723,4154.789,11441.718,3160.367,3870.578,889.545,443.139,535.314,6850.886,837.281,2024.650,660.842,1691.628,1978.000,,,
-188,1d675cdb46,2026-09-30,5733,Fix CI jobs that check less than they claim; move arm64 to GitHub (#5733),1995.704,4206.185,11691.125,3227.622,3966.104,909.748,449.770,541.566,6951.938,852.506,2009.592,663.701,1686.265,1983.285,,,
-189,a32f61eb98,2026-09-30,5678,Fix update() and merge_patch() when the argument is *this or one of its members (#5678),2014.810,4157.101,11636.135,3210.326,3924.659,899.344,448.133,541.371,6913.401,841.487,2038.263,667.515,1697.503,1980.686,,,
-190,18dd5663b0,2026-10-01,5548,Diff deeply nested values without recursing per nesting level (#5548),1990.931,4152.500,11469.697,3204.740,3985.593,903.248,448.981,540.974,6929.740,847.493,2040.504,665.352,1698.903,1981.438,,,
-191,3926fcaac3,2026-10-01,5729,"Deduplicate serializer dump code; fix stale includes, docs, and lint (#5729)",1999.556,4178.489,11581.000,3208.657,3876.755,891.669,452.445,538.525,6893.078,846.721,2042.010,662.154,1689.653,1975.503,,,
-192,cff0a61369,2026-10-01,5731,Share DOM SAX position handling; fix stale parser and lexer comments (#5731),2017.231,4112.604,11588.291,3157.047,3890.343,902.329,458.713,539.539,7020.568,847.995,2073.873,654.562,1696.823,1978.381,,,
-193,e400780533,2026-10-01,5745,Re-amalgamate single_include (#5745),1980.338,4100.659,11418.854,3166.896,3835.432,885.298,452.886,538.053,6888.203,824.666,2031.410,650.846,1668.952,1949.107,,,
-194,6aec1a085f,2026-10-02,5677,Report BON8 input that ends after a UTF-8 lead byte as truncated (#5677),2003.321,4099.066,11614.364,3159.029,3849.857,899.995,459.542,539.436,6904.474,843.221,2071.503,652.303,1685.702,1972.556,,,
-195,4d46bce4e1,2026-10-02,5750,Fix CI on develop (#5750),1962.685,4025.677,11277.718,3103.052,3785.213,894.610,448.583,533.887,6870.062,834.856,2020.231,658.339,1674.874,1954.242,,,
-196,63c10a51fc,2026-10-02,5638,"Review and extend the documentation, and check it in CI (#5638)",1968.954,4036.851,11425.135,3104.359,3797.852,902.519,451.067,537.668,6910.375,852.438,2043.889,674.938,1701.314,1971.711,,,
-197,6d0867a85f,2026-10-02,5751,Make comparisons with scalars noexcept only when the conversion is (#5751),2008.360,4091.453,11376.562,3144.575,3820.110,903.850,455.980,538.035,6851.885,841.549,2010.128,667.182,1690.586,1970.957,,,
-198,d11e89471b,2026-10-04,5606,Assert on missing array indices in const operator[] and document the JSON pointer case (#5606),2000.121,4075.695,11475.520,3139.456,3837.211,900.437,453.703,538.895,6921.432,845.064,2027.417,663.969,1679.148,1964.082,,,
-199,df27cc3d4c,2026-10-04,5682,Add scalar-on-left overloads for legacy discarded comparisons in C++20 (#5682),2010.838,4092.432,11495.625,3125.726,3873.167,911.281,456.807,538.386,6911.630,844.451,2033.630,688.219,1691.407,1971.697,,,
-200,6f2048cd5d,2026-10-04,5685,Accept lvalues in ordered_map::emplace's value parameter (#5685),1999.816,4095.006,11445.740,3136.685,3924.146,918.692,458.336,542.423,6968.520,848.783,2037.096,667.772,1708.274,2002.449,,,
-201,0d01d6ae90,2026-10-04,5686,Classify leaves with operator<=> itself past the nesting bound (#5686),1983.320,4116.981,11466.250,3192.969,3923.208,914.596,456.625,539.558,6975.537,849.252,2056.035,701.221,1716.493,1983.908,,,
-202,b730946432,2026-10-04,5689,Fix key types convertible to std::string_view breaking lookups (#5689),1990.288,4060.487,11377.709,3107.537,3803.857,892.191,451.727,538.045,6896.480,844.989,2018.884,658.649,1676.566,2023.638,,,
-203,49cd427196,2026-10-04,5690,"Copy-construct the base class of a deep copy's elements, not assign it (#5690)",1983.320,4033.156,11333.843,3138.547,3882.878,894.785,454.473,538.337,6918.619,841.205,2072.151,655.193,1693.871,1977.288,,,
-204,756b28c2b8,2026-10-04,5696,Keep a NUL byte ending a // comment as the end of input (#5696),1985.931,4099.331,11579.875,3148.560,3872.422,896.276,451.436,536.774,6901.156,845.631,2014.820,648.054,1685.199,1971.762,,,
-205,1edf0ef041,2026-10-04,5700,"Fix value(json_pointer, default) aborting under JSON_NOEXCEPTION (#5700)",1987.233,4076.133,11442.625,3124.099,3888.688,898.266,454.349,539.423,6950.140,852.803,2030.279,654.586,1691.751,1978.197,,,
-206,a212d3b2e4,2026-10-04,5722,Preserve the object comparator's state in a deep copy past the nesting bound (#5722),2000.138,4113.471,11391.854,3151.006,3866.904,905.695,455.384,539.504,6929.818,842.213,2029.619,674.438,1697.044,1983.856,,,
-207,1df1e8a845,2026-10-04,5591,Make cross-string-type basic_json conversion explicit without implicit conversions (#5591),2000.533,4107.994,11370.989,3160.854,3881.635,897.877,455.201,540.307,6927.167,840.130,2053.458,664.118,1697.618,1982.876,,,
-208,38a2db260c,2026-10-04,5728,Remove dead metaprogramming and duplicated code in traits and pointers (#5728),1971.450,4040.828,11319.270,3109.521,3819.505,903.606,451.137,538.725,6825.640,843.951,2016.652,663.160,1684.596,1958.896,,,
-209,c5650eaa3c,2026-10-04,5704,Reject malformed UTF-16/UTF-32 units in wide-string input (#5704),2006.689,4133.594,11469.209,3180.930,3881.633,902.924,456.572,540.557,6992.385,850.474,2025.267,652.367,1680.025,1957.468,,,
-210,40021f38fb,2026-10-04,5589,Add basic_json::as_base_class and document name conflicts with custom base classes (#5589),2012.673,4147.193,11453.250,3167.448,3892.542,910.149,457.238,541.642,6998.084,852.247,2049.759,652.868,1688.229,1972.508,,,
-211,73e9eae3c1,2026-10-04,5746,Add an error_handler parameter for UTF-8 to the binary readers and writers (#5746),2013.845,4130.237,11456.041,3135.688,3818.956,892.111,449.408,538.308,6825.213,835.872,1495.468,697.054,1679.760,1970.285,,,
-212,d8d47be4a5,2026-10-04,5754,Fix CI on develop after merging the ready-to-merge PRs (#5754),2013.191,4119.948,11573.656,3173.029,3941.703,912.201,459.208,541.264,7013.364,848.908,1514.681,699.273,1685.391,1984.652,,,
-213,6b4b825af2,2026-10-04,5607,Handle numbers that do not fit narrow number types in the binary readers (#5607),2009.190,4044.127,11362.677,3127.688,3827.841,892.131,449.386,534.731,6915.360,829.562,1487.640,697.206,1688.237,1952.157,,,
-214,8c1f60a45e,2026-10-04,5600,Store maps with enum keys as objects (opt-in) (#5600),2008.560,4128.059,11523.011,3187.763,3843.177,912.520,456.427,537.514,6859.010,839.685,1501.515,696.508,1688.848,1968.910,,,
-215,c5a7a4b46d,2026-10-04,5688,"Add deprecated from_bon8/from_bjdata(ptr, len) overloads (#5688)",2030.310,4108.505,11412.907,3141.836,3899.435,904.756,455.298,541.069,6926.151,846.240,1504.193,700.820,1693.983,1987.713,,,
-216,23d3b373e1,2026-10-04,5755,Add JSON_DELETE_DEPRECATED_FUNCTIONS to delete the deprecated functions (#5755),2018.708,4106.015,11533.729,3134.945,3826.409,899.623,452.833,538.544,6846.443,830.555,1509.060,705.724,1692.819,1971.476,,,
-217,8a142bc436,2026-10-06,5764,"Fix CI on develop after #5600, #5607, and #5755 (#5764)",2017.533,4151.854,11526.334,3195.240,3884.953,907.457,456.697,540.114,6891.136,844.145,1517.241,699.051,1690.344,1972.104,,,
-218,5379e04ce4,2026-10-06,5761,Throw type_error.321 when serializing discarded values to binary formats (#5761),1999.156,4055.300,11427.521,3153.581,3836.060,891.927,455.413,540.938,6883.093,853.094,1510.099,701.888,1686.695,1982.806,,,
-219,0a365865f9,2026-10-06,5762,Make basic_json destruction allocation-free and non-recursive (#5762),2024.289,4081.646,10719.428,3112.958,3900.503,924.900,462.081,540.765,6965.453,850.019,1511.381,669.802,1620.269,1912.078,,,
-220,5ecb704f6b,2026-10-06,5592,Speedup; check for the expected separator before the lexer's token switch (#5592),1920.428,3801.979,10139.250,2891.862,3833.159,823.859,451.951,540.310,6885.672,843.570,1512.778,668.793,1608.501,1885.206,,,
-221,6d4543e743,2026-10-06,5767,Fix destroy() for ObjectTypes without reverse iteration (#5767),1929.030,3843.266,10232.541,2911.458,3926.867,830.030,450.002,542.043,6938.890,846.589,1515.211,675.264,1622.245,1904.006,,,
-222,9b179cee1e,2026-10-06,5770,Handle all value_t enumerators in has_no_children() (#5770),1931.275,3794.497,10155.125,2891.927,3871.831,829.432,446.176,535.126,6909.625,833.114,1498.945,677.571,1615.785,1884.043,,,
-223,69874e4544,2026-10-06,5760,Fix NUL bytes in UBJSON/BJData high-precision numbers (#5760),1924.896,3853.081,10247.750,2926.515,3872.041,835.227,453.025,541.002,6919.037,842.240,1521.169,674.487,1607.441,1880.884,,,
-224,162e13b86f,2026-10-06,5758,Add with_*_t alias templates to create basic_json types with changed template parameters (#5758),1938.268,3842.126,10289.968,2914.104,3962.414,834.967,455.536,543.630,6969.266,850.082,1530.064,678.054,1635.303,1916.763,,,
-225,21a69230bd,2026-10-06,5585,Create a value before giving it its type (#5585),1918.165,3829.354,10247.656,2914.619,3874.909,832.287,451.252,543.791,6873.995,839.514,1521.088,699.604,1615.742,1894.449,,,
-226,ff6f3d7d4a,2026-10-07,5766,Reject nested indefinite-length CBOR string chunks (#5766),1926.074,3868.810,10256.823,2919.802,3957.807,832.129,457.241,543.640,7024.745,847.770,1522.612,705.623,1634.212,1918.402,,,
-227,1c754cfe31,2026-10-07,5701,Copy a pair-shaped array value under JSON_BRACE_INIT_COPY_SEMANTICS (#5701),1930.652,3828.195,10263.927,2921.570,3901.404,832.628,455.652,541.701,6909.037,843.563,1512.309,704.354,1623.254,1909.917,,,
-228,24dd7c63f0,2026-10-07,5777,Re-amalgamate after #5740 (#5777),1908.632,3833.930,10278.146,2905.443,3935.422,838.465,454.491,545.605,6905.047,839.087,1519.816,709.223,1618.643,1886.706,,,
-229,30e542e52a,2026-10-07,5776,Declare the namespace-scope constants in to_chars.hpp inline (#5776),1934.934,3823.724,10229.636,2916.698,3929.565,829.102,452.279,543.038,6951.995,837.059,1524.049,720.722,1619.823,1903.938,,,
-230,367336c83d,2026-10-07,5779,Fix CI on develop after #5585 (#5779),1928.921,3780.927,10153.395,2883.604,3877.750,824.488,451.999,543.662,6927.395,835.495,1506.387,694.058,1622.903,1907.732,,,
-231,069ace74af,2026-10-07,5707,"Round-trip BJData ND-array annotations exactly (single precision, key order) (#5707)",1937.387,3843.716,10184.302,2923.323,3936.570,827.610,456.123,543.169,6907.756,847.020,1515.229,696.202,1626.001,1901.142,,,
-232,43fe8928e1,2026-10-07,5781,Stop binary writers overflowing the stack on deep values (#5781),1961.046,3868.274,10300.573,2899.792,3982.526,845.594,461.395,543.298,7059.093,846.696,1522.728,697.717,1623.846,1921.370,,,
-233,a5f5d3059b,2026-10-07,5772,Make std::hash<basic_json> consistent with operator== for numbers (#5772),1949.220,3857.159,10170.427,2890.052,3981.349,840.234,459.334,541.947,6953.786,843.495,1509.713,703.339,1627.086,1911.653,,,
-234,a269794db7,2026-10-08,5782,Use MSVC intrinsics for full multiplication (#5782),1931.869,3817.742,10159.666,2902.820,3903.263,840.740,455.827,540.621,6884.562,843.272,1513.776,702.028,1614.459,1901.008,,,
-235,69a0c1b82c,2026-10-09,5328,Avoid allocating temporary basic_json for cbor and msgpack object keys (#5328),1909.579,3777.560,10065.682,2852.732,3897.659,833.289,459.856,540.631,6882.354,833.998,1498.288,314.059,1609.343,1906.714,,,
-236,374dfe4f0f,2026-10-09,5791,Keep converted object keys alive while writing UBJSON and BJData (#5791),1911.274,3827.188,10159.553,2886.568,3890.388,833.632,459.800,542.649,6954.547,838.507,1509.324,314.357,1613.655,1892.838,,,
-237,44e8597701,2026-10-09,5792,Flatten deeply nested values without recursing per nesting level (#5792),1940.103,3811.779,10139.396,2865.050,3874.896,835.001,459.686,544.065,6866.943,836.862,1496.298,314.617,1614.837,1891.741,,,
-238,2913e96433,2026-10-09,5793,Unflatten in time and memory linear in the pointer depth (#5793),1908.453,3785.099,10262.147,2878.961,3920.657,845.619,459.806,543.998,6874.813,832.659,1486.901,312.175,1589.620,1863.981,,,
-239,84ee12a67c,2026-10-09,5797,Make UTF8_ACCEPT/UTF8_REJECT inline variables to avoid TU-local exposure in modules (#5797),1922.691,3792.849,10162.656,2871.562,3887.719,836.308,456.522,542.577,6912.807,840.369,1497.447,313.683,1609.988,1899.591,,,
-240,1649d9eda4,2026-10-11,5783,Use and extend the detail helpers to remove duplicated code (#5783),1916.258,3804.242,10297.344,2913.118,3847.662,836.519,453.270,538.750,6953.015,832.774,1506.068,324.715,1596.974,1875.878,,,
-241,2cca04ae6f,2026-10-11,5800,Report one-character non-numeric array indices like longer ones (#5800),1932.327,3803.750,10135.438,2881.041,3894.622,840.016,458.569,538.037,6842.948,829.444,1499.722,324.811,1607.194,1875.851,,,
-242,74a03dec84,2026-10-11,5802,Throw type_error.321 for discarded values in to_bon8 (#5802),1924.695,3814.854,10084.239,2873.180,3848.498,839.406,450.575,534.181,6893.005,834.300,1503.369,324.389,1607.323,1887.871,,,
-243,e8b747e4bc,2026-10-11,5808,Re-amalgamate single_include after #5795 and #5806 (#5808),1937.995,3840.622,10221.990,2896.024,3885.568,834.394,458.874,539.771,6906.182,839.793,1517.689,324.800,1609.838,1890.885,,,
-244,40a62947d3,2026-10-12,4965,support JSON Merge Patch (RFC 7396) diff creation (#4965),1932.021,3822.188,10248.416,2924.560,3980.331,842.462,459.010,540.237,6978.526,838.941,1529.508,326.435,1636.153,1917.472,,,
-245,f23830b65e,2026-10-13,5809,Derive the lexer position lazily for seekable input (#5809),1814.075,3368.028,9974.755,2807.532,3943.229,647.639,457.018,551.206,6954.166,843.355,1522.762,315.716,1618.953,1903.816,,,
-246,aa9620fb15,2026-10-13,5810,Skip the indentation after a newline 8 bytes at a time (#5810),1719.629,2959.344,10139.771,2799.555,3939.292,592.867,465.821,545.858,6968.068,849.167,1519.774,315.385,1629.981,1907.253,,,
-247,e839bbd1c0,2026-10-13,5813,"Export client-facing headers from json.hpp for IWYU / include-cleaner, and check clients in CI (#5813)",1725.742,2949.070,10136.603,2821.591,3919.927,589.957,463.642,544.851,6987.427,843.151,1517.562,314.425,1619.671,1903.613,,,
-248,5b4c8f9b00,2026-10-14,5738,"Speed up the lexer: own float parser, string scan, and \u table (#5738)",1615.668,2934.565,8763.651,2794.503,3928.286,559.107,374.921,516.391,6937.140,815.776,1513.238,325.043,1625.226,1912.905,,,
-249,91a7a94cc6,2026-10-14,5634,"Write doubles with the shortest digits (Żmij), digits in registers (#5634)",1613.126,2929.599,8708.599,2783.954,3874.248,548.449,363.632,468.127,2421.176,745.466,1511.406,323.743,1614.195,1900.392,,,
-250,a6e9785ab6,2026-10-15,5831,Look up the key only once in the callback parser's key() (#5831),1589.309,2938.557,8798.823,2767.872,3882.154,547.301,364.257,467.833,2395.851,744.716,1506.830,316.192,1623.771,1899.458,,,
-251,0c4e7c103c,2026-10-15,5834,Make flatten() linear for ordered_json (#5834),1625.754,2936.203,8755.088,2793.081,3879.740,557.529,366.745,468.359,2418.388,746.210,1524.325,315.954,1614.677,1898.544,,,
-252,0a4b3a84ee,2026-10-15,5836,"Speed up JSON pointer parsing, formatting, comparison and lookup (#5836)",1622.914,2915.901,8819.073,2783.990,3922.758,558.429,366.216,470.019,2427.606,747.168,1526.881,316.972,1625.611,1912.601,,,
-253,6ba53e63dd,2026-10-15,5833,Speed up array-to-container from_json (#5833),1626.155,2920.747,8777.989,2782.870,3988.206,560.154,367.695,469.892,2427.262,749.301,1529.474,316.399,1631.810,1915.217,,,
-254,ca7740fef2,2026-10-15,5837,Move elements when converting rvalue containers to JSON (#5837),1615.747,2928.778,8765.792,2773.062,3926.456,561.034,367.498,469.807,2424.344,748.423,1523.215,316.339,1624.374,1894.455,,,
-255,4530d9681c,2026-10-15,5832,Fix quadratic parent updates for ordered_json with JSON_DIAGNOSTICS (#5832),1618.937,2911.378,8794.094,2763.191,3886.974,555.789,366.475,469.275,2415.231,746.755,1512.590,315.856,1618.226,1899.284,,,
-256,91869983a0,2026-10-15,5840,Make the value lifecycle inline-friendly (#5840),1595.075,2832.274,8420.390,2690.050,3876.841,555.209,366.118,469.783,2424.335,747.931,1485.914,314.048,1549.787,1775.823,,,
-257,6a27b9acb2,2026-10-15,5838,Construct remaining hot-path exceptions out of line so core functions inline (#5838),1589.535,2824.360,8466.755,2699.690,3888.990,557.917,364.879,471.601,2422.995,746.543,1498.371,314.978,1539.656,1797.752,,,
-258,4f11512641,2026-10-15,5835,"Speed up container destruction, iterator access and diff() (#5835)",1515.750,2714.756,8639.213,2574.698,3805.860,561.827,366.793,469.680,2421.769,748.727,1383.744,317.248,1446.525,1705.789,,,
-259,ed86019a21,2026-10-15,5839,Move binary reader error construction out of line (#5839),1507.907,2766.774,8597.870,2622.289,3767.638,553.026,362.644,468.482,2408.731,744.936,1362.080,324.833,1445.531,1703.216,,,
-260,6261d1e432,2026-10-15,5842,Construct the JSON Patch exceptions out of line (#5842),1532.015,2756.867,8670.677,2617.989,3869.133,558.865,365.834,469.932,2435.279,750.295,1380.628,327.010,1453.340,1705.232,,,
-261,ce28c722bc,2026-10-15,5815,Allow the same type for number_integer_t and number_unsigned_t (#5815),1533.045,2775.807,8543.755,2615.412,3776.721,553.127,365.866,471.174,2433.384,745.309,1372.372,328.405,1452.848,1716.649,,,
-262,91b9ee2602,2026-10-15,5829,Update cppcheck to 1.5.2 (Cppcheck 2.20) and fix its new findings (#5829),1516.450,2748.961,8571.521,2599.870,3807.744,557.303,367.220,472.209,2421.389,743.889,1379.405,326.087,1451.926,1710.506,,,
-263,dcb96e82fb,2026-10-15,5822,Escape characters below 0x60 from a table straight into the write buffer (#5822),1525.777,2734.963,8524.771,2588.289,3790.726,557.907,360.057,463.574,2430.626,743.382,1375.816,325.308,1439.947,1695.307,,,
-264,b41228c227,2026-10-15,5843,Fix AppVeyor failures from the Zmij double writer (#5843),1497.922,2690.614,8406.906,2582.482,3726.195,548.374,352.932,459.663,2398.953,737.639,1347.507,322.827,1429.640,1682.775,,,
-265,4da73dc5ff,2026-10-15,5858,Fix compiler warnings on develop from the API performance stack (#5858),1523.138,2731.825,8474.073,2593.149,3782.769,553.758,359.180,462.915,2380.246,739.049,1346.755,324.909,1441.408,1698.043,,,
-266,5683f5e024,2026-10-15,5859,Define less_general() only without three-way comparison (#5859),1504.689,2739.172,8603.693,2605.159,3797.057,560.213,358.865,464.429,2423.456,742.207,1374.000,326.702,1447.488,1712.379,,,
-267,cd6b428ef0,2026-10-16,5860,Fix CI failures on develop from the API performance stack (#5860),1510.160,2732.695,8564.510,2603.242,3810.518,556.015,362.409,466.047,2437.364,745.153,1377.439,325.753,1444.892,1699.255,,,
-268,cc8334113c,2026-10-19,5866,Do not use Qt's keyword macros as identifiers (#5866),1498.858,2732.644,8535.328,2587.258,3787.993,548.267,362.607,464.487,2403.147,735.633,1368.831,323.997,1442.709,1686.963,,,
-269,4da932f518,2026-10-19,5828,Make parsing from std::istream and FILE* fast (#5828),1499.289,2723.605,8397.787,2597.237,1956.330,553.182,363.501,458.898,2397.342,733.054,1362.816,320.346,1429.314,1698.294,,,
-270,122d718330,2026-10-21,5620,"Add json_document and json_view: node index, parser, and document (#5620)",1520.651,2751.099,8527.135,2588.494,1994.466,560.384,362.257,461.917,2393.611,741.198,1362.167,328.620,1441.211,1691.238,230.700,389.375,976.277
-271,43e97b629b,2026-10-21,5622,"Add element access, iteration, values, and JSON pointers to json_view (#5622)",1493.875,2687.307,8383.354,2567.078,1986.311,547.934,353.938,462.380,2400.331,737.098,1374.560,322.012,1445.504,1686.421,231.353,386.679,958.441
-272,4c3a3eb5b5,2026-10-21,5624,Add dump() and comparisons to json_view (#5624),1502.926,2714.747,8522.161,2608.565,2001.856,552.014,359.510,462.656,2393.110,732.091,1366.524,324.313,1442.119,1682.564,228.836,393.082,976.976
-273,3ff37ead75,2026-10-21,5628,Scan json_view strings with SIMD and index large objects (#5628),1514.580,2728.619,8406.562,2609.758,2041.176,556.017,357.330,462.573,2383.158,733.939,1368.057,324.391,1442.711,1700.884,177.833,367.806,950.071
-274,823eee3b59,2026-10-21,5630,"Add editable json_documents: set, push_back, insert, and erase (#5630)",1498.134,2754.810,8537.062,2588.474,1994.441,556.670,353.931,463.646,2392.987,740.023,1357.930,324.129,1441.622,1698.022,181.404,376.470,962.253
-275,4971200b54,2026-10-21,5632,Add images of json_documents: save() and load() (#5632),1494.231,2681.211,8425.834,2543.276,1984.849,548.146,354.762,460.440,2414.747,734.679,1363.841,321.349,1421.806,1670.134,177.777,368.631,949.292
-276,4155e2938f,2026-10-21,5633,Write json_view's dump() without a call or conversion per token (#5633),1500.247,2712.357,8612.193,2597.211,2012.860,558.559,359.889,462.371,2412.896,739.048,1372.456,324.070,1441.546,1697.571,180.320,371.514,954.088
-277,08d7fbb0a1,2026-10-21,5874,Read FILE* input with std::fgetc under MemorySanitizer (#5874),1543.124,2758.211,8565.730,2584.453,2046.255,558.522,358.865,464.542,2421.435,743.715,1374.005,324.687,1462.572,1700.819,180.714,372.601,965.361
-278,0cbe95ffa2,2026-10-21,5824,"Speed up writing CBOR and MessagePack, above all integer arrays (#5824)",1501.550,2706.534,8707.120,2584.807,2039.728,551.688,360.692,466.024,2397.182,742.777,1361.847,201.488,1429.223,1682.436,178.641,371.038,946.389
-279,bd5227c2ec,2026-10-21,5805,Fix silent wrong results for custom number types (#5805),1511.036,2733.325,8786.406,2588.906,2000.483,553.456,360.458,465.989,2398.381,743.338,1370.524,201.168,1444.051,1701.345,179.776,372.557,954.733
-280,e13e976801,2026-10-21,5851,Accumulate number digits while scanning them (#5851),1501.737,2667.570,7762.365,2523.289,1987.518,545.368,359.336,462.056,2407.652,739.226,1368.104,200.632,1440.390,1688.117,178.721,374.278,956.353
-281,5e13f834c1,2026-10-21,5852,Copy the text of float tokens only when a SAX handler asks for it (#5852),1512.318,2655.312,7314.354,2515.044,2019.288,547.993,362.038,463.788,2410.262,745.839,1364.898,208.969,1450.422,1713.902,179.198,371.996,968.699
-282,e9970066c5,2026-10-21,5853,"Scan strings with SSE2, SSSE3, or NEON (#5853)",1488.705,2654.404,7339.589,2551.050,2015.716,486.719,341.381,475.591,2434.369,756.973,1376.754,208.797,1449.981,1706.044,182.358,379.153,968.355
-283,fa37b952df,2026-10-21,5854,Match literals without a stack array and keep parser states in bytes (#5854),1471.894,2619.164,7285.000,2485.883,1949.380,471.534,347.785,475.287,2413.552,751.487,1374.254,207.522,1443.177,1699.611,181.643,377.971,977.268
-284,52fecc1fab,2026-10-21,5855,Move object keys into the value when parsing (#5855),1392.599,2628.688,7362.562,2485.293,1882.663,471.968,339.711,473.663,2414.903,751.376,1319.857,200.185,1448.057,1705.675,179.410,371.865,963.306
-285,6aefd8c662,2026-10-21,5878,Copy short printable-ASCII strings without starting the scanner (#5878),1399.384,2664.401,7232.557,2535.425,1922.431,470.185,320.230,418.440,2446.082,696.786,1317.889,201.955,1447.217,1701.135,180.860,376.217,968.215
-286,7c26e99ac5,2026-10-21,5879,Copy ASCII strings in the view's dump with ensure_ascii (#5879),1361.839,2610.182,7187.115,2471.708,1853.592,464.274,313.821,414.316,2388.840,687.851,1318.253,200.399,1434.986,1697.487,178.601,368.595,947.799
-287,3e031b06a5,2026-10-21,5876,"Use standard library helpers where available, with C++11 fallbacks (#5876)",1381.599,2592.122,7336.719,2499.994,1848.434,467.895,315.257,415.788,2430.769,692.250,1311.164,200.424,1444.303,1698.311,180.149,374.484,961.091
-288,9bf531436f,2026-10-21,5861,"Speed up flatten(), unflatten(), diff() and patch() (#5861)",1379.301,2613.219,7170.433,2472.628,1853.035,467.161,315.217,412.303,2406.597,683.062,1298.512,198.681,1434.089,1682.912,177.511,368.116,947.255
-289,9855db81f3,2026-10-22,5881,Silence macro-to-enum for the endianness macros (#5881),1369.150,2613.547,7209.787,2476.232,1841.347,467.780,316.011,416.187,2415.504,686.920,1304.263,200.868,1441.243,1694.603,178.739,368.123,948.579
-290,aa0b371f7c,2026-10-23,5884,"Faster std::istream input: inline get-area path, binary reads, unbuffered streambufs (#5884)",1375.030,2569.362,7218.375,2484.425,1743.476,470.240,319.245,403.750,2436.034,679.759,1319.508,201.531,1443.354,1698.057,180.133,372.206,946.488
-291,86d5c56c54,2026-10-23,5886,"Speed up flatten(), unflatten(), diff() and patch() further (#5886)",1386.169,2622.331,7281.551,2495.923,1700.794,472.317,317.282,403.416,2409.097,682.507,1320.319,200.963,1444.908,1697.678,179.138,375.751,954.573
-292,dec0e9b749,2026-10-23,5883,"Write strings, scalars and indentation in dump() with fewer calls (#5883)",1383.235,2621.847,7151.412,2491.644,1732.469,473.034,211.016,288.685,2276.953,416.068,1318.490,200.574,1452.099,1701.256,180.064,372.324,960.583
-293,6fa14d8f95,2026-10-23,5885,Write binary formats through reserved sink space and number runs (#5885),1366.956,2600.914,7176.994,2465.343,1691.333,462.351,210.662,285.259,2301.553,417.589,1324.173,136.601,1429.240,1687.947,179.319,368.881,962.518
-294,0b924f5375,2026-10-23,5887,Split and print JSON pointers in one pass (#5887),1377.526,2597.394,7242.688,2464.445,1739.841,466.382,211.716,288.202,2319.771,418.288,1318.592,138.744,1441.983,1706.639,179.684,372.087,976.078
-295,e9c4fe3cdf,2026-10-24,5889,json_view: indented and ensure_ascii dumps through the fast writer (#5889),1393.007,2627.226,7248.287,2491.551,1769.642,469.976,211.665,291.327,2305.655,420.168,1319.431,139.577,1457.965,1712.927,182.274,377.741,983.284
-296,dd7686a269,2026-10-24,5888,"json_view: faster reading, indexing and C-stream parsing (#5888)",1382.444,2607.026,7161.365,2472.635,1701.277,468.438,209.963,287.564,2276.329,415.511,1311.194,137.875,1439.700,1696.646,177.624,367.131,977.802
-297,9c50bdd140,2026-10-24,5882,Make the DOM parser cheaper per container and per member (#5882),1392.673,2461.082,6068.625,2334.706,1696.950,475.550,209.313,291.776,2300.287,416.349,1317.581,138.194,1441.209,1707.720,178.751,367.339,978.031
-298,01139dc192,2026-10-24,5905,Silence an Infer false positive in json_view materialize (#5905),1381.470,2463.013,6078.010,2335.216,1709.088,475.718,211.023,291.212,2275.302,418.098,1320.441,137.572,1443.434,1696.436,175.969,365.658,975.272
-299,fe5e401870,2026-10-25,5901,Consolidate duplicated detail helpers and bodies (#5891) (#5901),1395.881,2462.765,6066.698,2327.708,1706.745,474.184,212.683,289.321,2283.842,417.657,1314.153,138.084,1442.796,1696.588,177.144,364.092,961.847
-300,3eae5680d6,2026-10-25,5902,"from_json: number-first dispatch for arithmetic types, loop for std::array (#5902)",1397.343,2477.060,6080.864,2340.781,1711.774,481.523,213.618,289.360,2289.503,417.517,1313.541,138.271,1440.822,1695.785,178.731,367.293,983.555
-301,2a56afc714,2026-10-25,5916,Fix VS 2015 build of the DOM parser (#5882) (#5916),1373.929,2476.139,6056.797,2341.890,1749.167,482.883,215.107,290.053,2292.495,417.441,1320.640,137.868,1445.227,1702.064,177.912,367.669,984.794
-302,d6431a9104,2026-10-26,5918,Throw out_of_range.411 for JSON Patch add into a null parent (#5917) (#5918),1371.635,2445.905,6017.636,2314.178,1696.447,478.134,210.996,287.397,2278.718,414.186,1291.197,137.374,1436.212,1682.197,175.790,361.130,962.070
-303,81d66291c5,2026-10-26,5358,Create objects for pointer tokens that cannot be array indices (#5358),1382.909,2465.649,6052.114,2332.556,1711.721,479.927,213.359,289.913,2289.412,417.201,1311.695,137.572,1437.168,1696.302,177.495,367.526,963.924
-304,d5da84249f,2026-10-26,5927,"Skip CBOR tags in front of map keys, validate indefinite text chunks, fix CBOR docs (#5927)",1374.553,2476.464,6076.834,2346.075,1744.224,483.375,211.423,291.148,2287.800,420.247,1320.015,137.369,1449.068,1704.785,177.459,365.004,963.908
-305,0c3570d44a,2026-10-26,5929,Validate the UBJSON/BJData container type marker for count 0; fix UBJSON docs (#5929),1381.462,2462.578,6055.183,2329.970,1713.086,484.962,210.683,290.024,2260.371,416.895,1319.093,137.782,1453.495,1706.801,177.031,361.025,962.952
-306,dc768a7d5d,2026-10-26,5930,Fix BSON binary subtype 0x02 and check the declared document size earlier (#5930),1386.856,2463.400,6054.255,2337.105,1746.441,485.425,214.508,290.954,2314.702,418.769,1325.164,139.255,1452.125,1718.313,179.005,367.327,977.054
-307,60107eda3f,2026-10-26,5931,"Read BJData ND-arrays of float16, restrict ND-array char to 0..127, correct BJData docs (#5931)",1389.051,2464.457,6049.084,2336.727,1710.473,483.159,213.007,288.990,2285.073,417.663,1317.537,137.893,1443.301,1697.126,178.706,364.051,962.202
-308,731f1b5bfb,2026-10-26,5919,"json_view: view_mode enum instead of bool Editable, node_kind for node::kind (#5919)",1381.664,2428.529,5978.713,2333.485,1746.571,479.163,211.036,288.957,2281.592,416.990,1308.904,137.486,1447.665,1691.427,175.453,363.704,963.371
-309,4cdfa6d0f4,2026-10-26,5920,json_view: no save() and load() on big-endian targets (#5920),1390.901,2477.841,6102.474,2337.925,1777.003,485.382,214.373,290.946,2303.147,421.178,1321.976,139.942,1446.726,1704.816,179.928,367.825,976.532
-310,5a2819c940,2026-10-26,5921,json_view: one SIMD macro set with the library (#5921),1393.409,2479.841,6073.011,2350.336,1785.087,485.658,214.651,292.044,2304.448,418.026,1326.212,138.942,1468.981,1719.505,179.174,368.704,982.764
-311,e5fe4ebdd2,2026-10-26,5922,json_view: from_json() of the macros reads views directly (#5922),1384.612,2467.078,6056.328,2337.309,1742.751,482.554,213.389,289.543,2299.118,417.521,1309.673,138.237,1448.628,1704.550,177.925,365.163,984.351
-312,9e67bfa115,2026-10-26,5923,json_view: the library's std conversions read views directly (#5923),1395.103,2482.517,6066.604,2350.538,1751.603,482.504,213.399,290.185,2306.188,420.406,1317.415,138.730,1444.367,1708.720,178.016,369.111,975.875
-313,21ec9bd801,2026-10-27,5915,json_view: fewer allocations when parsing small documents (#5915),1388.282,2469.118,6066.495,2340.391,1744.901,478.745,214.934,292.970,2309.264,422.842,1323.237,138.541,1454.151,1707.314,178.058,366.514,958.110
-314,2bb2feeef4,2026-10-27,5942,"Fix the red CI on develop (json_view pointer tokens, bson, from_json tests, Infer, IWYU) (#5942)",1391.981,2468.266,6068.495,2335.707,1751.527,482.908,214.285,291.291,2300.453,417.876,1328.089,138.010,1454.934,1701.845,178.250,367.182,964.917
-315,78a0687147,2026-10-27,5940,Strong exception guarantee for operator[](json_pointer) (#5940),1379.414,2467.492,6109.136,2335.309,1723.090,480.260,216.197,292.075,2313.798,415.444,1314.530,138.314,1449.629,1698.792,177.628,364.844,965.314
-316,091c10d4a5,2026-10-28,5936,Fix self-aliasing in json_pointer::operator/= and patch_inplace (#5936),1389.195,2462.409,6052.125,2321.091,1722.944,473.064,214.421,290.952,2279.997,416.589,1315.370,138.531,1437.996,1683.844,176.596,363.105,952.473
-317,54f6b3ef06,2026-10-28,5945,json_view: source positions in materialize() with JSON_DIAGNOSTIC_POSITIONS (#5945),1417.895,2496.591,6325.787,2377.105,1737.749,478.133,213.209,293.150,2304.971,422.648,1348.357,139.793,1490.556,1735.758,178.445,368.380,990.587
-318,0115bb47b3,2026-10-30,5965,Name the source and license of adapted code in the file comments (#5965),1378.289,2456.731,6043.011,2330.780,1711.965,470.960,212.371,290.798,2298.443,419.433,1323.072,137.982,1441.316,1690.457,176.197,363.182,977.928
-319,0b91f9ddd8,2026-10-30,5926,json_view: check_utf8 skips well-formed runs with the parser's string scan (#5926),1400.777,2488.449,6137.021,2359.856,1747.026,473.449,213.226,290.736,2320.524,420.950,1325.039,139.324,1452.907,1703.426,177.699,364.500,988.981
-320,ea03d601af,2026-10-30,5890,json_view: comparison without temporaries and a faster image float check (#5890),1388.958,2477.531,6127.547,2357.032,1781.238,477.111,216.144,293.938,2340.267,424.058,1337.149,139.387,1459.923,1723.919,,,
-321,755bb16d7a,2026-10-30,5966,Fix the red CI on develop: remove the duplicate is_editable in basic_json_view (#5966),1411.867,2497.560,6085.938,2326.880,1726.740,480.376,212.294,292.134,2312.521,420.608,1325.345,138.544,1465.640,1744.928,177.785,367.385,992.034
-322,4fe670b5f4,2026-10-31,5969,json_view: decode chains of unicode escapes in a loop (#5969),1390.866,2466.769,6026.817,2328.995,1736.168,475.935,212.530,291.166,2284.708,418.661,1323.436,137.513,1495.099,1736.832,176.566,365.541,963.794
-323,9c349b1d7c,2026-10-31,5964,Write integers of 17 to 20 digits eight digits at a time in dump() (#5964),1390.500,2469.332,6079.698,2359.276,1718.121,470.647,209.615,289.143,2300.836,419.976,1331.637,138.488,1450.106,1703.483,176.731,365.394,953.483
-324,3fd3e0fdaa,2026-11-01,5908,json_view: dump and read canada.json-style floats faster (batched float decisions) (#5908),1366.359,2456.409,6058.422,2329.066,1713.347,470.784,209.895,289.318,2294.111,417.490,1319.403,138.100,1435.053,1698.647,176.006,363.191,954.196
-325,76001c6b4c,2026-11-01,5968,"BSON reader: find C-string terminators 8 bytes at a time, skip array element names (#5968)",1408.222,2488.159,6124.287,2363.039,1759.751,477.558,216.880,294.011,2317.898,420.892,1345.718,138.602,1460.432,1713.978,179.721,370.205,970.525
-326,1a018577cc,2026-11-01,5970,json_view: accept() checks the text without writing an index (#5970),1427.279,2506.345,6160.916,2368.009,1765.595,480.552,214.060,293.093,2341.368,419.303,1330.990,138.625,1463.731,1724.021,181.150,373.171,964.666
-327,162eda2574,2026-11-01,5971,json_view: skip the digits of a fraction 16 bytes at a time (SSE2) (#5971),1404.191,2474.144,6049.006,2363.726,1711.013,471.608,211.613,289.736,2290.230,418.673,1322.822,138.556,1441.219,1697.559,178.814,370.881,956.959
-328,6c3ab966d3,2026-11-01,5975,CBOR reader: read runs of scalar array elements in one loop (#5975),1385.800,2466.923,6050.480,2325.901,1725.552,474.248,210.034,289.350,2296.399,418.689,1327.626,137.722,1440.577,1698.622,178.627,367.797,953.174
-329,aecbef3949,2026-11-01,5976,Binary readers: swap the bytes of floats with a single byteswap (#5976),1393.659,2479.298,6092.110,2337.421,1718.218,472.539,211.337,289.638,2307.378,417.589,1324.038,137.341,1447.860,1701.387,179.160,369.448,956.324
-330,edf8d17601,2026-11-01,5980,MessagePack reader: read runs of scalar array elements in one loop (#5980),1422.081,2486.171,6157.302,2360.678,1733.503,477.472,211.189,289.309,2307.724,419.448,1334.857,138.914,1449.345,1721.126,180.127,369.693,967.370
-331,fb515ddc34,2026-11-01,5981,UBJSON/BJData readers: read optimized arrays of numbers in one loop (#5981),1387.633,2470.528,6067.657,2345.342,1721.303,476.141,212.198,288.466,2292.649,416.597,1324.486,139.598,1441.019,1705.957,179.190,367.903,959.677
-332,517444b504,2026-11-01,5978,accept() checks strings without copying them (#5978),1385.026,2453.809,5975.744,2322.357,1711.222,475.186,210.256,288.348,2282.444,415.256,1321.012,138.726,1434.772,1698.120,178.106,365.411,976.135
-333,9742edc294,2026-11-01,5979,"BSON writer: write to_bson(j) in one pass, with sizes written afterwards (#5979)",1418.816,2514.802,6091.854,2380.269,1772.646,474.067,211.598,290.653,2316.886,421.043,1346.324,139.213,1469.659,1754.493,180.269,372.201,982.753
-334,f022e3c59c,2026-11-01,5982,Binary readers and writers: faster UTF-8 checks of strings (#5982),1399.836,2474.703,6060.781,2341.409,1707.583,468.692,209.824,290.357,2290.034,418.739,1312.448,138.360,1458.779,1707.575,178.911,369.303,968.200
-335,ddc34f546a,2026-11-01,5974,json_view: exceptions name the path and the bytes of the value (#5974),1394.263,2489.906,6017.599,2345.632,1728.593,473.672,210.364,289.980,2306.608,420.394,1327.301,138.827,1448.846,1707.037,177.406,368.436,978.755
-336,b2674a4a2f,2026-11-01,5984,BSON reader: check array element names in place in strict mode (#5984),1392.028,2460.989,5975.355,2357.154,1726.291,472.389,209.872,289.219,2301.092,417.632,1309.441,138.779,1438.270,1709.943,177.580,366.368,973.214
-337,76dbe8f9c9,2026-11-02,6009,"Fix the red CI on develop: Visual Studio 2017 build of the BSON writer, Valgrind timeouts (#6009)",1387.812,2461.244,5975.843,2323.693,1713.572,469.489,209.863,289.058,2291.892,415.935,1306.729,138.322,1447.714,1694.220,177.698,363.994,972.289
-338,03d408aafa,2026-11-02,6003,JSON_DIAGNOSTIC_POSITIONS: comparing a value-initialized iterator throws instead of crashing (#6003),1385.014,2455.146,5981.995,2380.493,1732.039,466.575,209.272,289.474,2295.226,416.844,1301.454,138.016,1445.840,1703.494,176.691,365.416,967.929
-339,66e2eeeec0,2026-11-02,6000,Do not construct the base class when destroying a container (#6000),1403.795,2457.426,6001.495,2323.510,1718.268,471.022,210.474,288.385,2308.462,417.187,1313.263,138.770,1437.867,1705.586,179.168,363.523,966.701
-340,bdc737db6d,2026-11-02,5999,json_view: dump() without StringType::capacity() (#5999),1378.656,2452.954,6020.464,2339.908,1724.630,470.774,211.638,288.939,2303.773,418.311,1312.024,139.010,1446.709,1704.406,177.291,363.859,966.602
-341,494a74c242,2026-11-02,5996,"insert(): strong guarantee for single elements, basic guarantee for the rest (#5996)",1390.153,2478.991,6032.084,2342.171,1727.040,469.799,213.660,291.104,2307.193,419.623,1329.285,139.000,1461.294,1718.750,178.995,366.898,974.652
-342,bfe69c73c2,2026-11-02,5992,"json_view: get<T>() of a boolean throws for the exact number types, as basic_json does (#5992)",1387.497,2452.207,6023.042,2335.261,1720.938,471.966,212.162,288.851,2310.949,417.260,1315.155,137.821,1448.762,1710.153,175.990,366.239,970.052
-343,ff0bdfdef3,2026-11-02,5990,Keep the byte range in exceptions about the root value (#5990),1386.358,2469.197,6037.812,2344.775,1768.382,479.285,214.375,290.939,2329.486,421.838,1332.654,138.666,1455.905,1720.376,178.637,368.500,972.955
-344,1d69ef9ab4,2026-11-02,5997,"Raise line coverage to 99.9 %: fix the measurement, remove unreachable code, add tests (#5997)",1404.481,2456.447,6166.942,2338.226,1749.981,478.338,211.609,289.387,2304.532,419.095,1321.195,140.055,1460.574,1706.842,179.067,369.688,982.029
-345,5c4f585ac2,2026-11-02,6004,"Lexer, parser, stream adapter, SAX: remove checks that invariants make dead (#6004)",1386.586,2468.772,6188.662,2373.328,1775.098,483.139,211.476,291.250,2315.874,420.854,1321.718,138.268,1464.254,1709.146,180.316,367.994,965.010
-346,100f676b3e,2026-11-02,6012,Restore the two commits of #6005 that the stack merge dropped (fixes the build of develop) (#6012),1369.597,2437.356,6122.282,2305.291,1691.485,472.217,208.716,288.666,2291.034,416.120,1300.906,137.896,1439.300,1688.769,176.641,366.389,972.368
-347,590b622d48,2026-11-02,5991,parse(): propagate std::bad_alloc instead of crashing on a half-constructed member (#5991),1377.480,2425.219,6113.438,2306.435,1716.697,474.315,209.052,288.883,2292.776,417.291,1305.336,137.989,1453.044,1704.638,179.096,368.072,978.198
-348,6d5581c4e8,2026-11-02,6008,CBOR/MessagePack readers: leave one-element arrays to the general path (#6008),1400.456,2439.163,6140.448,2328.635,1743.039,480.725,212.470,295.268,2348.332,427.202,1340.319,139.121,1489.584,1736.380,184.949,371.567,995.731
-349,b18b6fc7e6,2026-11-02,6013,Build the parser's syntax error prefix with one concat() (#6013),1370.175,2435.337,6098.834,2320.728,1726.256,472.914,210.817,289.786,2292.841,419.186,1306.593,139.277,1481.709,1714.543,177.065,366.270,971.330
-350,07876e2292,2026-11-02,6015,json_view: a value that is not found has no bytes in its exception context (#6015),1361.297,2435.980,6080.718,2305.853,1707.733,474.621,210.382,291.568,2337.276,424.783,1329.556,139.590,1450.506,1690.804,178.472,366.370,977.807
-351,baba5db36f,2026-11-02,6016,"Fix the MSVC and GCC builds of develop (C4127, -Weffc++) (#6016)",1381.280,2440.908,6116.068,2303.611,1713.472,476.121,210.492,290.105,2319.878,420.598,1318.037,139.554,1471.388,1729.097,177.078,369.621,959.145
-352,candidate,,,develop + open pull requests,1392.967,2469.204,6110.380,2348.760,1730.819,474.089,212.339,290.760,2284.428,420.179,1320.938,137.755,1441.341,1697.486,176.758,364.547,955.117

docs/mkdocs/scripts/figures/json_view_layout.py

@@ -104,8 +104,10 @@ def ribbon(body, x0, y, cw, prefix, label=True):
 
 
 # ---------------------------------------------------------------- figure 1: parse() vs json_document
-def layout_tree(b, P):
-    """panel A: basic_json::parse(), y from 0 to 220"""
+def layout():
+    W, H, P = 840, 692, "jvl"
+    b = markers(P)
+    # --- panel A: basic_json::parse()
     b.append(text(16, 26, "basic_json::parse(): a tree, every array, object, and string in its own heap allocation", "nj-jsonview-h"))
     b.append(rect(16, 98, 60, 34, "nj-jsonview-box"))
     b.append(text(46, 120, "json", "nj-jsonview-mono", anchor="middle"))
@@ -115,7 +117,7 @@ def layout_tree(b, P):
     rows = [('"port"', "6379", None), ('"price"', "19.9", "double: 19.90 is gone"), ('"tags"', "\u2022", None)]
     for i, (k, v, note) in enumerate(rows):
         y = 50 + i * 48
-        b.append(line(192, 115, 226, y + 17, LINE, P))
+        b.append(curve(192, 115, 226, y + 17, LINE, P, bend=0))
         b.append(rect(228, y, 180, 34, "nj-jsonview-heap"))
         b.append(text(240, y + 22, k, "nj-jsonview-mono", KEY))
         b.append(text(396, y + 22, v, "nj-jsonview-mono", NUM if i < 2 else LINE, anchor="end"))
@@ -130,9 +132,8 @@ def layout_tree(b, P):
     b.append('<path class="nj-jsonview-sep" d="M624 %g V%g"/>' % (yt - 17, yt + 17))
     b.append(text(601, yt + 5, "json", "nj-jsonview-mono", anchor="middle"))
     b.append(text(647, yt + 5, "json", "nj-jsonview-mono", anchor="middle"))
-    for x1, y1, y2 in ((601, yt - 17, 130), (647, yt + 17, 196)):
-        b.append('<path class="nj-jsonview-arr nj-jsonview-c-%s" d="M%g %g C%g %g %g %g %g %g" marker-end="url(#%s-%s)"/>'
-                 % (LINE, x1, y1, x1, y2, x1 + 40, y2, 706, y2, P, LINE))
+    b.append(curve(601, yt - 17, 706, 130, LINE, P, bend=-20))
+    b.append(curve(647, yt + 17, 706, 196, LINE, P, bend=20))
     b.append(rect(708, 113, 126, 34, "nj-jsonview-heap"))
     b.append(text(771, 135, "std::string eu", "nj-jsonview-mono nj-jsonview-sm", STR, anchor="middle"))
     b.append(rect(708, 179, 126, 34, "nj-jsonview-heap"))
@@ -140,10 +141,9 @@ def layout_tree(b, P):
     # legend
     b.append(rect(16, 186, 18, 14, "nj-jsonview-heap", rx=3))
     b.append(text(42, 198, "a separate heap allocation", "nj-jsonview-note"))
-
-
-def layout_index(b, P, y0):
-    """panel B: json_document::parse(), y from y0 - 16 to y0 + 440"""
+    # --- panel B: json_document::parse()
+    y0 = 252
+    b.append('<path class="nj-jsonview-sep" d="M16 %g H824"/>' % (y0 - 18))
     b.append(text(16, y0 + 10, "json_document::parse(): the source text stays where it is; one flat index of 16-byte nodes", "nj-jsonview-h"))
     b.append(text(16, y0 + 38, "source text, 54 bytes (borrowed, or owned by the document)", "nj-jsonview-note"))
     cw, rx0, ry = 14, 42, y0 + 48
@@ -185,25 +185,6 @@ def layout_index(b, P, y0):
     b.append(curve(vx + 105, vy, n6x, ny + nh, STRUCT, P))
     b.append(text(30, ny + nh + 50, "integers are converted while parsing and kept in their node;", "nj-jsonview-note"))
     b.append(text(30, ny + nh + 68, "floats and strings point back into the text", "nj-jsonview-note"))
-
-
-TREE_DESC = ("The text {\"port\": 6379, \"price\": 19.90, \"tags\": [\"eu\", \"a\\\"b\"]} parsed by basic_json::parse(): "
-             "the root json value points to a std::map whose three nodes are separate heap allocations; the price is stored "
-             "as the double 19.9; the tags array is a std::vector of two json values, each pointing to its own std::string.")
-INDEX_DESC = ("The same text parsed by json_document::parse(): it keeps the 54 bytes of source text and builds a flat index of "
-              "nine 16-byte nodes in document order: object, key port, unsigned integer 6379 (the converted value is in the "
-              "node), key price, float, key tags, array, string eu, and an escaped string. Keys, the float, and the plain "
-              "string point back into the source text; the escaped string points into the document's buffer of decoded "
-              "strings. A json_view is two pointers: one to the document and one to a node, here the array.")
-
-
-def layout():
-    # both panels in one figure (features/json_view.md)
-    W, H, P = 840, 692, "jvl"
-    b = markers(P)
-    layout_tree(b, P)
-    b.append('<path class="nj-jsonview-sep" d="M16 234 H824"/>')
-    layout_index(b, P, 252)
     write("json_view_layout.svg", W, H, "fig-jvl-title",
           "The same J\u200bSON text parsed by basic_json::parse() and by json_document::parse()",
           "The text {\"port\": 6379, \"price\": 19.90, \"tags\": [\"eu\", \"a\\\"b\"]}. Top: basic_json::parse() builds a tree: "
@@ -214,16 +195,6 @@ def layout():
           "key tags, array, string eu, and an escaped string. Keys, the float, and the plain string point back into the "
           "source text; the escaped string points into the document's buffer of decoded strings. A json_view is two "
           "pointers: one to the document and one to a node, here the array.", b)
-    # each panel on its own (home/blog/how_3_13_0_got_faster.md), with their own marker ids
-    b = markers("jvlt")
-    layout_tree(b, "jvlt")
-    write("json_view_layout_tree.svg", W, 222, "fig-jvlt-title",
-          "A J\u200bSON text parsed by basic_json::parse()", TREE_DESC, b)
-    b = markers("jvli") + ['<g transform="translate(0 -236)">']
-    layout_index(b, "jvli", 252)
-    b.append('</g>')
-    write("json_view_layout_index.svg", W, H - 236, "fig-jvli-title",
-          "The same J\u200bSON text parsed by json_document::parse()", INDEX_DESC, b)
 
 
 # ---------------------------------------------------------------- figure 2: lifetimes

docs/mkdocs/scripts/figures/perf_blog.py

@@ -1,795 +0,0 @@
-"""Draws the figures of home/blog/how_3_13_0_got_faster.md as inline SVGs into docs/images/.
-
-Generated files:
-
-- perf_blog_overview.svg: speedup of 3.13.0 over 3.12.0 per workload (Google Benchmark suite)
-- perf_blog_distribution.svg: how many of the suite's benchmarks got how much faster (data/perf_suite.csv)
-- perf_blog_timeline_<workload>.svg: speedup over 3.12.0 of eight workloads at every develop commit that changed
-  json.hpp or json_view.hpp since 3.12.0, one panel each
-- perf_blog_swar.svg: the eight-byte string test on one word of input
-- perf_blog_overlap.svg: writing a short string with two overlapping 16-byte loads and stores
-- perf_blog_digits.svg: converting eight ASCII digits with three multiplications
-- perf_blog_cliffs.svg: operations that were quadratic or worse, 3.12.0 against 3.13.0 (log scale)
-- perf_blog_heldout.svg: validate on the 19 files we didn't tune on, json_document against the fastest library per
-  file (data/perf_heldout_validate.json)
-- perf_blog_usecases_<platform>.svg: libraries x use cases, time relative to the fastest fully validating library
-  (data/perf_usecases_<platform>.json); perf_blog_tables.py prints the tables of the appendix from the same data
-
-The numbers are copied from the tables of the post (the timeline from data/perf_timeline.csv, which
-`tests/benchmarks/history/history.py summarize` writes); the tables stay on the page as the accessible fallback. Update both together.
-Like the figures of charts.py, the SVGs are not images: the page includes their text with
-`--8<-- "images/<name>.svg"`, so they follow the colors and fonts of the page (`nj-charts` rules in
-docs/css/fig-charts.css, `nj-fig` rules in docs/css/brand.css). Run `python3 scripts/figures/perf_blog.py` from
-docs/mkdocs after changing data or drawing, and commit the generated files.
-"""
-import csv
-import html
-import json
-import math
-import re
-from pathlib import Path
-
-HERE = Path(__file__).resolve().parent
-OUT = HERE.parents[1] / "docs" / "images"
-MINUS = "&#8722;"
-TIMES = "&#215;"
-
-# words the abbreviation extension (includes/glossary.md) would wrap in <abbr> inside the SVG text
-GLOSSARY = re.findall(r"^\*\[([^\]]+)\]", (HERE.parents[1] / "includes" / "glossary.md").read_text(), re.M)
-ABBR = re.compile(r"(?<![\w;])(%s)(?!\w)" % "|".join(sorted(map(re.escape, GLOSSARY), key=len, reverse=True)))
-
-
-def protect(text):
-    return ABBR.sub(lambda m: m.group(1)[0] + "&#8203;" + m.group(1)[1:], text)
-
-
-def esc(s):
-    return html.escape(s, quote=True).replace("&amp;#", "&#")
-
-
-def esc_md(s):
-    """esc() for text with _ or *, which the page's Markdown pass would pair across text elements as emphasis"""
-    return esc(s).replace("_", "&#95;").replace("*", "&#42;")
-
-
-def write(name, W, H, cls, tid, title, desc, body):
-    s = ['<svg class="nj-fig nj-charts %s" viewBox="0 0 %g %g" role="img" aria-labelledby="%s %s-d" '
-         'xmlns="http://www.w3.org/2000/svg">' % (cls, W, H, tid, tid),
-         '<title id="%s">%s</title>' % (tid, esc(title)),
-         '<desc id="%s-d">%s</desc>' % (tid, esc(desc))]
-    s += body
-    s.append('</svg>')
-    text = protect("\n".join(s)) + "\n"
-    assert "\n\n" not in text  # a blank line would end the raw HTML block
-    (OUT / name).write_text(text)
-
-
-def hbar(x0, x1, y, h, r=4):
-    """Horizontal bar from the baseline x0 to x1, rounded only at the data end."""
-    if abs(x1 - x0) < 0.5:
-        return "M%g %g h0.5 v%g h-0.5 Z" % (x0, y, h)
-    r = min(r, h / 2, abs(x1 - x0))
-    s = 1 if x1 > x0 else -1
-    return ("M%g %g H%g Q%g %g %g %g V%g Q%g %g %g %g H%g Z"
-            % (x0, y, x1 - s * r, x1, y, x1, y + r, y + h - r, x1, y + h, x1 - s * r, y + h, x0))
-
-
-def fx(v):
-    """speedup factor for labels: 2 significant digits below 10, integers above"""
-    if v >= 100:
-        return "%d%s" % (round(v), TIMES)
-    if v >= 10:
-        return "%.0f%s" % (v, TIMES)
-    return "%.1f%s" % (v, TIMES) if v >= 1.995 else "%.2f%s" % (v, TIMES)
-
-
-# ---------- SWAR: one word of a string ----------
-def swar():
-    text = 'witter",'
-    W, H = 640, 312
-    L, cw, top = 40, 70, 34
-    b = []
-    b.append('<text class="fg-h" x="%g" y="20">eight input bytes, loaded as one 64-bit word (byte 0 is the lowest)</text>' % L)
-    for i, ch in enumerate(text):
-        x = L + i * cw
-        special = ch == '"'
-        b.append('<rect class="fg-cell" x="%g" y="%g" width="%g" height="40" rx="4"/>' % (x, top, cw - 6))
-        if special:
-            b.append('<rect class="nj-charts-c2" fill-opacity=".25" x="%g" y="%g" width="%g" height="40" rx="4"/>' % (x, top, cw - 6))
-        b.append('<text class="fg-code" x="%g" y="%g" text-anchor="middle">%s</text>' % (x + (cw - 6) / 2, top + 26, esc(ch)))
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">0x%02X</text>' % (x + (cw - 6) / 2, top + 58, ord(ch)))
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">byte %d</text>' % (x + (cw - 6) / 2, top + 74, i))
-    # result row
-    y2 = top + 112
-    b.append('<text class="fg-h" x="%g" y="%g">swar_string_special(): the high bit of each byte that needs handling</text>' % (L, y2 - 14))
-    for i, ch in enumerate(text):
-        x = L + i * cw
-        special = ch == '"'
-        b.append('<rect class="fg-cell" x="%g" y="%g" width="%g" height="34" rx="4"/>' % (x, y2, cw - 6))
-        if special:
-            b.append('<rect class="nj-charts-c2" fill-opacity=".25" x="%g" y="%g" width="%g" height="34" rx="4"/>' % (x, y2, cw - 6))
-        b.append('<text class="fg-code" x="%g" y="%g" text-anchor="middle">%s</text>'
-                 % (x + (cw - 6) / 2, y2 + 23, "0x80" if special else "0x00"))
-    # conclusion
-    y3 = y2 + 70
-    b.append('<text class="fg-code" x="%g" y="%g">count_trailing_zeros(0x0080000000000000) = 55</text>' % (L, y3))
-    b.append('<text class="fg-code" x="%g" y="%g">55 / 8 = 6: copy bytes 0 to 5 in one go, then handle the quote</text>' % (L, y3 + 26))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">No branch per byte: a few subtractions, ANDs and ORs per word,</text>' % (L, y3 + 56))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">then one count of trailing zeros.</text>' % (L, y3 + 74))
-    write("perf_blog_swar.svg", W, H, "nj-charts--swar", "nj-blog-swar",
-          "Finding the end of a run of ordinary string characters eight bytes at a time",
-          "The eight bytes w, i, t, t, e, r, quote and comma are loaded as one word. The test sets the high bit only in "
-          "byte 6, the quote. Counting trailing zero bits gives 55, divided by eight gives 6: bytes 0 to 5 are copied "
-          "at once, then the quote ends the string.", b)
-
-
-def span(b, x0, x1, y, cls, label):
-    """a bracket under the cells from x0 to x1, tinted, with a label to its right or inside"""
-    b.append('<rect class="%s" fill-opacity=".22" x="%g" y="%g" width="%g" height="22" rx="4"/>' % (cls, x0, y, x1 - x0))
-    b.append('<rect class="%s" x="%g" y="%g" width="4" height="22" rx="2"/>' % (cls, x0, y))
-    b.append('<rect class="%s" x="%g" y="%g" width="4" height="22" rx="2"/>' % (cls, x1 - 4, y))
-    b.append('<text class="fg-code" x="%g" y="%g" text-anchor="middle" style="font-size:14px">%s</text>' % ((x0 + x1) / 2, y + 16, label))
-
-
-# ---------- short strings: two overlapping 16-byte loads ----------
-def overlap():
-    text = "profile_link_color"   # a key of twitter.json, 18 bytes
-    n = len(text)
-    W = 640
-    L, cw, top = 40, 31, 34
-    X = lambda i: L + i * cw
-    b = ['<text class="fg-h" x="%g" y="20">a string of n = %d bytes: too long for one 16-byte vector, too short for a loop</text>' % (L, n)]
-    for i, ch in enumerate(text):
-        both = n - 16 <= i < 16
-        b.append('<rect class="fg-cell" x="%g" y="%g" width="%g" height="36" rx="4"/>' % (X(i), top, cw - 4))
-        if both:
-            b.append('<rect class="nj-charts-c3" fill-opacity=".3" x="%g" y="%g" width="%g" height="36" rx="4"/>' % (X(i), top, cw - 4))
-        b.append('<text class="fg-code" x="%g" y="%g" text-anchor="middle">%s</text>' % (X(i) + (cw - 4) / 2, top + 24, esc_md(ch)))
-    for i in (0, n - 16, 15, n - 1):
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%d</text>' % (X(i) + (cw - 4) / 2, top + 52, i))
-    y = top + 66
-    span(b, X(0), X(15) + cw - 4, y, "nj-charts-c1", "a = load 16 bytes at p")
-    span(b, X(n - 16), X(n - 1) + cw - 4, y + 30, "nj-charts-c2", "b = load 16 bytes at p + n " + MINUS + " 16")
-    y += 82
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">Both loads lie inside the string, and together they cover all of it; bytes %d to 15 are in both.</text>' % (L, y, n - 16))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">Test a and b for a quote, a backslash, a control character or 0x7F: none, so write</text>' % (L, y + 22))
-    b.append('<text class="fg-code" x="%g" y="%g">store a at d, store b at d + n %s 16</text>' % (L, y + 52, MINUS))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">The second store writes bytes %d to 15 again, with the same values. For any n from 16 to 32:</text>' % (L, y + 80, n - 16))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">two loads, one test, two stores, no loop and no branch on the length.</text>' % (L, y + 98))
-    write("perf_blog_overlap.svg", W, y + 112, "nj-charts--swar", "nj-blog-overlap",
-          "Writing an 18-byte string with two overlapping 16-byte loads and stores",
-          "The 18 bytes of profile_link_color. Load a covers bytes 0 to 15, load b covers bytes 2 to 17, so bytes 2 to 15 "
-          "are in both. Neither contains a byte that needs escaping, so a is stored at the destination and b 2 bytes "
-          "later; the second store writes bytes 2 to 15 again with the same values. This works for any length from 16 to "
-          "32 bytes without a loop.", b)
-
-
-# ---------- eight digits at a time: three multiplications ----------
-def digits():
-    W = 600
-    L, cw, h = 40, 64, 34
-    X = lambda i: L + i * cw
-    steps = [
-        ("eight ASCII digits in one 64-bit word (byte 0 is the lowest)", 1, list("12345678"), True),
-        ("& 0x0F0F0F0F0F0F0F0F: one digit value per byte", 1, list("12345678"), False),
-        ("× (10 · 2⁸ + 1) >> 8, every second byte kept: two digits per 16 bits", 2, ["12", "34", "56", "78"], False),
-        ("× (100 · 2¹⁶ + 1) >> 16, every second lane kept: four digits per 32 bits", 4, ["1234", "5678"], False),
-        ("× (10000 · 2³² + 1) >> 32: the value", 8, ["12345678"], False),
-    ]
-    b = []
-    y = 20
-    for k, (head, width, cells, ascii_) in enumerate(steps):
-        b.append('<text class="fg-h" x="%g" y="%g">%s</text>' % (L, y, esc(head)))
-        for j, c in enumerate(cells):
-            x = X(j * width)
-            b.append('<rect class="fg-cell" x="%g" y="%g" width="%g" height="%g" rx="4"/>' % (x, y + 10, width * cw - 6, h))
-            if k == len(steps) - 1:
-                b.append('<rect class="nj-charts-c1" fill-opacity=".25" x="%g" y="%g" width="%g" height="%g" rx="4"/>' % (x, y + 10, width * cw - 6, h))
-            b.append('<text class="fg-code" x="%g" y="%g" text-anchor="middle">%s</text>' % (x + (width * cw - 6) / 2, y + 10 + 23, esc(c)))
-            if ascii_:
-                b.append('<text class="nj-charts-tick" x="%g" y="%g">0x%02X</text>' % (x + (width * cw - 6) / 2, y + h + 26, ord(c)))
-        y += h + (58 if ascii_ else 40)
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">Each step combines neighboring lanes, in all lanes of the word at once:</text>' % (L, y - 8))
-    b.append('<text class="fg-note fg-note--l" x="%g" y="%g">three multiplications instead of eight, and no branch.</text>' % (L, y + 10))
-    write("perf_blog_digits.svg", W, y + 22, "nj-charts--swar", "nj-blog-digits",
-          "Converting eight ASCII digits to their value with three multiplications",
-          "The text 12345678 as one word. Masking gives the digit values 1 to 8, one per byte. Multiplying by 10 times 2 to "
-          "the 8 plus 1 and shifting gives 12, 34, 56 and 78 in 16-bit lanes; multiplying by 100 times 2 to the 16 plus 1 "
-          "gives 1234 and 5678 in 32-bit lanes; multiplying by 10000 times 2 to the 32 plus 1 gives 12345678.", b)
-
-
-# ---------- overview: speedup per workload (Google Benchmark rows, 3.12.0 time / 3.13.0 time) ----------
-# (group, label, speedup), copied from the table "The short version"
-OVERVIEW = [
-    ("Parsing", "twitter.json", 3.14),
-    ("Parsing", "citm_catalog.json", 4.25),
-    ("Parsing", "canada.json", 3.35),
-    ("Parsing", "canada.json, indented", 6.51),
-    ("Parsing", "citm, ordered_json", 6.85),
-    ("Parsing", "twitter, std::ifstream", 2.50),
-    ("Parsing", "citm, FILE*", 4.74),
-    ("Parsing", "citm, accept()", 7.07),
-    ("Writing", "dump() twitter", 6.70),
-    ("Writing", "dump() canada", 2.98),
-    ("Writing", "dump(4) citm", 4.70),
-    ("Writing", "to_cbor() twitter", 4.59),
-    ("Reading CBOR", "twitter, memory", 3.39),
-    ("Reading CBOR", "twitter, FILE*", 6.59),
-    ("Values", "diff() canada", 10.46),
-    ("Values", "iterate canada", 2.73),
-    ("Values", "copy + destroy citm", 1.13),
-    ("Values", "== citm", 1.06),
-]
-
-
-def overview():
-    W, L, R = 560, 190, 520
-    hi = max(v for _, _, v in OVERVIEW)
-    hi = math.ceil(hi + 0.5)
-    X = lambda v: L + v / hi * (R - L)
-    pitch, bh, top = 24, 15, 8
-    b, desc = [], []
-    y = top
-    group = None
-    rows = []
-    for g, label, v in OVERVIEW:
-        if g != group:
-            if group is not None:
-                y += 10
-            b.append('<text class="nj-charts-panel" x="%g" y="%g">%s</text>' % (8, y + 12, esc(g)))
-            y += 22
-            group = g
-        rows.append((label, v, y))
-        y += pitch
-    axis_y = y + 2
-    for t in range(1, hi + 1):
-        b.append('<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(t), top, X(t), axis_y))
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%d%s</text>' % (X(t), axis_y + 16, t, TIMES))
-    for label, v, yy in rows:
-        b.append('<text class="nj-charts-rowlabel nj-charts-tick--r" x="%g" y="%g" text-anchor="end">%s</text>' % (L - 8, yy + bh - 3, esc(label)))
-        b.append('<path class="nj-charts-c1" d="%s"><title>%s: %s</title></path>' % (hbar(X(0), X(v), yy, bh), esc(label), fx(v)))
-        b.append('<text class="nj-charts-val" x="%g" y="%g">%s</text>' % (X(v) + 5, yy + bh - 3, fx(v)))
-        desc.append("%s %s" % (label, fx(v).replace(TIMES, "x")))
-    b.append('<line class="nj-charts-ref" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(1), top, X(1), axis_y))
-    b.append('<line class="nj-charts-zero" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(0), top, X(0), axis_y))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">speedup over 3.12.0 (3.12.0 = 1%s), more is better</text>'
-             % ((L + R) / 2, axis_y + 34, TIMES))
-    write("perf_blog_overview.svg", W, axis_y + 44, "nj-charts--blog", "nj-blog-overview",
-          "Speedup of 3.13.0 over 3.12.0 per workload, Apple M1 Max, Apple clang",
-          "Horizontal bars of the speedup, more is better. " + "; ".join(desc) + ".", b)
-
-
-# ---------- distribution: how many of the suite's benchmarks got how much faster ----------
-# bins of the speedup (3.12.0 time / 3.13.0 time) over all rows of data/perf_suite.csv
-BINS = [(0, 1, "below 1" + TIMES), (1, 1.5, "1 to 1.5" + TIMES), (1.5, 2, "1.5 to 2" + TIMES),
-        (2, 3, "2 to 3" + TIMES), (3, 5, "3 to 5" + TIMES), (5, 10, "5 to 10" + TIMES), (10, 1e9, "10" + TIMES + " or more")]
-
-
-def distribution():
-    rows = list(csv.DictReader((HERE / "data" / "perf_suite.csv").open()))
-    s = sorted(float(r["speedup"]) for r in rows)
-    n = len(s)
-    counts = [sum(lo <= v < hi for v in s) for lo, hi, _ in BINS]
-    geo = math.exp(sum(math.log(v) for v in s) / n)
-    med = (s[(n - 1) // 2] + s[n // 2]) / 2
-    W, H = 560, 250
-    L, R, T, B = 52, 548, 16, 196
-    hi = 10 * math.ceil(max(counts) / 10 + 0.4)
-    Y = lambda c: B - c / hi * (B - T)
-    slot = (R - L) / len(BINS)
-    b, desc = [], []
-    for t in range(0, hi + 1, 20):
-        b.append('<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (L, Y(t), R, Y(t)))
-        b.append('<text class="nj-charts-tick nj-charts-tick--r" x="%g" y="%g">%d</text>' % (L - 6, Y(t) + 4, t))
-    for k, ((lo, _, label), c) in enumerate(zip(BINS, counts)):
-        x = L + k * slot + 8
-        w = slot - 16
-        cls = "nj-charts-c2" if lo < 1 else "nj-charts-c1"
-        b.append('<rect class="%s" x="%.1f" y="%.1f" width="%.1f" height="%.1f" rx="3"><title>%s: %d</title></rect>'
-                 % (cls, x, Y(c), w, B - Y(c), label, c))
-        b.append('<text class="nj-charts-val" x="%.1f" y="%.1f" text-anchor="middle">%d</text>' % (x + w / 2, Y(c) - 5, c))
-        b.append('<text class="nj-charts-tick" x="%.1f" y="%.1f">%s</text>' % (x + w / 2, B + 16, label))
-        desc.append("%s: %d" % (label.replace(TIMES, "x"), c))
-    b.append('<line class="nj-charts-axis" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (L, B, R, B))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">speedup over 3.12.0, more is better</text>' % ((L + R) / 2, H - 10))
-    b.append('<text class="nj-charts-tick" transform="rotate(-90)" x="%g" y="14">number of benchmarks</text>' % (-(T + B) / 2))
-    print("distribution: median %s, geometric mean %s" % (fx(med), fx(geo)))
-    write("perf_blog_distribution.svg", W, H, "nj-charts--blog", "nj-blog-dist",
-          "Speedup of 3.13.0 over 3.12.0 for all %d benchmarks of the suite" % n,
-          "Bars counting the benchmarks per speedup range: " + "; ".join(desc)
-          + ". Median %s, geometric mean %s." % (fx(med).replace(TIMES, "x"), fx(geo).replace(TIMES, "x")), b)
-
-
-# ---------- timeline: one panel per workload ----------
-# (column in perf_timeline.csv, panel title, [(PR, label)]): each labeled step shows the number of the theme that
-# explains it ("U" for the UTF-8 check of the binary readers that came and went); the appendix maps steps to PRs
-TIMELINE = [
-    ("parse_citm", "parse() citm_catalog.json", [(5234, "4"), (5283, "1"), (5592, "4"), (5809, "4"), (5810, "2"), (5882, "4")]),
-    ("parse_canada", "parse() canada.json", [(5234, "4"), (5283, "1"), (5617, "3"), (5738, "3"), (5851, "3"), (5882, "4")]),
-    ("accept_twitter", "accept() twitter.json", [(5234, "4"), (5283, "1"), (5592, "4"), (5809, "4"), (5810, "2"), (5853, "2")]),
-    ("parse_twitter_ifstream", "parse() twitter.json, std::ifstream", [(5828, "1"), (5884, "1")]),
-    ("dump_twitter", "dump() twitter.json", [(5285, "6"), (5738, "2"), (5878, "2"), (5883, "2")]),
-    ("dump_canada", "dump() canada.json", [(5285, "6"), (5634, "3")]),
-    ("from_cbor_twitter", "from_cbor() twitter", [(5233, "1"), (5501, "4"), (5185, "U"), (5746, "U")]),
-    ("to_cbor_twitter", "to_cbor() twitter", [(5328, "4"), (5824, "6"), (5885, "6")]),
-]
-MONTHS = [("2025-04", "3.12.0"), ("2026-09", "Sep 2026"), ("2026-10", "Oct")]
-
-
-def timeline():
-    rows = list(csv.DictReader((HERE / "data" / "perf_timeline.csv").open()))
-    n = len(rows)
-    W, H = 340, 270
-    L, R, T, B = 44, 330, 66, 208
-    for col, title, labels in TIMELINE:
-        vals = [float(r[col]) if r[col] else None for r in rows]
-        base = vals[0]
-        rel = [base / v if v else None for v in vals]   # speedup over 3.12.0
-        hi = max(x for x in rel if x)
-        top = 2 ** math.ceil(math.log2(hi * 1.3))
-        Y = lambda s: B - math.log2(s) / math.log2(top) * (B - T)
-        X = lambda i: L + i / (n - 1) * (R - L)
-        b = ['<text class="nj-charts-panel" x="%g" y="18">%s</text>' % (8, esc(title))]
-        t = 1
-        while t <= top:
-            b.append('<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (L, Y(t), R, Y(t)))
-            b.append('<text class="nj-charts-tick nj-charts-tick--r" x="%g" y="%g">%d%s</text>' % (L - 6, Y(t) + 4, t, TIMES))
-            t *= 2
-        # month ticks: first commit of the month
-        seen = set()
-        for i, r in enumerate(rows):
-            m = r["date"][:7]
-            for key, name in MONTHS:
-                if m == key and key not in seen:
-                    seen.add(key)
-                    b.append('<line class="nj-charts-axis" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(i), B, X(i), B + 4))
-                    b.append('<text class="nj-charts-tick" x="%g" y="%g">%s</text>' % (X(i), B + 17, name))
-        # a step line: each commit's value holds until the next commit
-        pts, prev = [], None
-        for i, s in enumerate(rel):
-            if s is None:
-                continue
-            if prev is not None:
-                pts.append("%.1f,%.1f" % (X(i), Y(prev)))
-            pts.append("%.1f,%.1f" % (X(i), Y(s)))
-            prev = s
-        b.append('<polyline class="nj-charts-json" points="%s"/>' % " ".join(pts))
-        # labels for named steps: a dot at the commit and its PR number above it; PRs a few commits apart share a
-        # label, and a label that would overlap one already placed moves up
-        groups = []
-        for pr, lab in labels:
-            i = next(k for k, r in enumerate(rows) if r["pr"] == str(pr))
-            if groups and X(i) - X(groups[-1][-1][1]) < 6:
-                groups[-1].append((pr, i, lab))
-            else:
-                groups.append([(pr, i, lab)])
-        # labels in two rows above the plot, each with a guide down to its dot
-        placed = []
-        for g in groups:
-            i = g[-1][1]
-            x, y = X(i), Y(rel[i])
-            for pr, k, lab in g:
-                b.append('<circle class="nj-charts-json-dot" cx="%.1f" cy="%.1f" r="3.5"><title>#%s: %s</title></circle>'
-                         % (X(k), Y(rel[k]), pr, fx(rel[k])))
-            marks = list(dict.fromkeys(lab for _, _, lab in g))
-            w = 18 * len(marks) - 3
-            tx = min(max(x, L + w / 2), R - w / 2)
-            row = 0
-            while any(r == row and abs(tx - px) < (w + pw) / 2 + 4 for px, r, pw in placed):
-                row += 1
-            placed.append((tx, row, w))
-            ty = 46 - 18 * row   # the center of the badges
-            b.append('<line class="nj-charts-grid" stroke-dasharray="2 2" x1="%.1f" y1="%.1f" x2="%.1f" y2="%.1f"/>' % (x, ty + 8, x, y - 5))
-            for k, mark in enumerate(marks):
-                cx = tx - w / 2 + 7.5 + 18 * k
-                b.append('<circle class="nj-theme-dot%s" cx="%.1f" cy="%.1f" r="7.5"/>' % ("" if mark.isdigit() else " nj-theme-dot--other", cx, ty))
-                b.append('<text class="nj-theme-num" x="%.1f" y="%.1f" text-anchor="middle">%s</text>' % (cx, ty + 4, mark))
-        b.append('<line class="nj-charts-axis" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (L, B, R, B))
-        b.append('<text class="nj-charts-note" x="%g" y="%g">speedup over 3.12.0 (log scale), more is better</text>' % (8, H - 8))
-        final = rel[-1]
-        desc = ("%s: speedup over 3.12.0 at each of %d commits, ending at %s. Labeled steps, by theme: %s."
-                % (title, n, fx(final).replace(TIMES, "x"), ", ".join(lab for _, lab in labels)))
-        write("perf_blog_timeline_%s.svg" % col, W, H, "nj-charts--timeline", "nj-blog-tl-" + col,
-              "%s: speedup over 3.12.0 by commit" % title, desc, b)
-
-
-# ---------- cliffs: 3.12.0 and 3.13.0 times on a log axis ----------
-# (operation, 3.12.0 ms, 3.13.0 ms), copied from the table in "Fix the algorithm first"
-CLIFFS = [
-    ("diff() 64k numbers vs []", 4237, 10.8),
-    ("diff() 20k objects vs half", 122, 4.13),
-    ("parse() callback, 32k objects", 1398, 12.1),
-    ("operator< nested 24 deep", 64.4, 0.002),
-    ("operator< citm, 10x", 284, 3.94),
-    ("flatten() citm, ordered_json", 271, 1.45),
-    ("to_bson() 200 deep, 100x", 20.3, 0.352),
-    ("push_back() 100k, diagnostics", 1589, 5.32),
-    ("at(i) 10k, diagnostics", 45.9, 0.088),
-]
-
-
-def cliffs():
-    W, L, R = 600, 250, 585
-    lo, hi = -3, 4   # 1 µs .. 10 s, in log10 ms
-    X = lambda ms: L + (math.log10(ms) - lo) / (hi - lo) * (R - L)
-    top, pitch = 40, 34
-    b, desc = [], []
-    axis_y = top + pitch * len(CLIFFS) - 10
-    for e in range(lo, hi + 1):
-        b.append('<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(10 ** e), top - 10, X(10 ** e), axis_y))
-        lab = {-3: "1 µs", -2: "10 µs", -1: "0.1 ms", 0: "1 ms", 1: "10 ms", 2: "0.1 s", 3: "1 s", 4: "10 s"}[e]
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%s</text>' % (X(10 ** e), axis_y + 16, lab))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">runtime (log scale), less is better</text>' % ((L + R) / 2, axis_y + 34))
-    b.append('<defs><marker id="nj-blog-cliffs-head" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="5" markerHeight="5" '
-             'orient="auto"><path class="nj-charts-head" d="M0 0 L10 5 L0 10 z"/></marker></defs>')
-    b.append('<circle class="nj-charts-ojson-dot" cx="%g" cy="14" r="5"/><text class="nj-charts-leg" x="%g" y="18.5">3.12.0</text>' % (L, L + 10))
-    b.append('<circle class="nj-charts-json-dot" cx="%g" cy="14" r="5"/><text class="nj-charts-leg" x="%g" y="18.5">3.13.0</text>' % (L + 80, L + 90))
-    for i, (op, old, new) in enumerate(CLIFFS):
-        y = top + i * pitch + 8
-        b.append('<text class="nj-charts-rowlabel" x="%g" y="%g" text-anchor="end">%s</text>' % (L - 10, y + 4, esc(op)))
-        # an arrow from the old time to the new one, ending just before the new dot
-        b.append('<line class="nj-charts-axis" x1="%g" y1="%g" x2="%g" y2="%g" marker-end="url(#nj-blog-cliffs-head)"/>'
-                 % (X(old) - 6, y, X(new) + 7, y))
-        b.append('<circle class="nj-charts-ojson-dot" cx="%g" cy="%g" r="5"><title>%s, 3.12.0: %g ms</title></circle>' % (X(old), y, esc(op), old))
-        b.append('<circle class="nj-charts-json-dot" cx="%g" cy="%g" r="5"><title>%s, 3.13.0: %g ms</title></circle>' % (X(new), y, esc(op), new))
-        b.append('<text class="nj-charts-factor" x="%g" y="%g">%s</text>' % ((X(old) + X(new)) / 2, y - 7, fx(old / new)))
-        desc.append("%s: %g ms to %g ms" % (op, old, new))
-    write("perf_blog_cliffs.svg", W, axis_y + 44, "nj-charts--blog", "nj-blog-cliffs",
-          "Operations that grew quadratically or worse: time with 3.12.0 and 3.13.0, log scale",
-          "Dot plot on a logarithmic time axis, less is better; an arrow leads from each 3.12.0 time to the 3.13.0 time. " + "; ".join(desc) + ".", b)
-
-
-# ---------- validating the files we didn't tune on, file by file ----------
-# data/perf_heldout_validate.json: per platform, file and library the fastest fully validating way of the validate
-# use case on the 19 other files of simdjson's jsonexamples (reused parsers not chosen), extracted from
-# summarize.py --json of the held-out run
-HELDOUT = [("mac", "Apple M1 Max", "nj-charts-json-dot"), ("x86-gcc", "x86-64, GCC 16.2", "nj-charts-ojson-dot")]
-
-
-def heldout():
-    data = json.load((HERE / "data" / "perf_heldout_validate.json").open())
-    files = sorted(data["mac"])
-    rel, winner = {}, {}
-    for plat, _, _ in HELDOUT:
-        for f in files:
-            libs = data[plat][f]
-            # the fastest other library: below 1 json_document is the fastest, and the distance shows by how much
-            best = min((l for l in libs if l != "nlohmann json_document"), key=lambda l: libs[l]["us"])
-            rel[plat, f] = libs["nlohmann json_document"]["us"] / libs[best]["us"]
-            winner[plat, f] = UC_LIBS.get(best, best)
-    files.sort(key=lambda f: (rel["x86-gcc", f], rel["mac", f]))
-    W, L, R = 620, 262, 486
-    lo, hi = 0.4, 1.15
-    X = lambda r: L + (r - lo) / (hi - lo) * (R - L)
-    top, pitch = 58, 20
-    axis_y = top + pitch * len(files)
-    b, desc = [], []
-    for t in (0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1):
-        b.append('<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(t), top - 8, X(t), axis_y))
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%.1f%s</text>' % (X(t), axis_y + 16, t, TIMES))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">json&#95;document&#8217;s time / the fastest other library&#8217;s, less is better</text>' % ((L + R) / 2, axis_y + 34))
-    x = 8
-    for plat, name, cls in HELDOUT:
-        b.append('<circle class="%s" cx="%g" cy="14" r="5"/><text class="nj-charts-leg" x="%g" y="18.5">%s</text>' % (cls, x + 5, x + 15, esc_md(name)))
-        x += 30 + 7.6 * len(name)
-    b.append('<text class="nj-charts-tick nj-charts-tick--l" x="%g" y="%g">next on x86-64</text>' % (R + 14, top - 10))
-    for i, f in enumerate(files):
-        y = top + i * pitch + 6
-        b.append('<text class="nj-charts-rowlabel nj-charts-code" x="%g" y="%g" text-anchor="end">%s</text>' % (L - 10, y + 4, esc_md(f)))
-        for k, (plat, name, cls) in enumerate(HELDOUT):
-            r = rel[plat, f]
-            b.append('<circle class="%s" cx="%.1f" cy="%g" r="4.5"><title>%s, %s: %.2f%s the time of %s</title></circle>'
-                     % (cls, X(max(lo, min(r, hi))), y - 3.5 + 7 * k, esc_md(f), esc_md(name), r, TIMES, esc_md(winner[plat, f])))
-        w = winner["x86-gcc", f]
-        b.append('<text class="nj-charts-tick nj-charts-tick--l%s" x="%g" y="%g">%s</text>'
-                 % (" nj-charts-best" if rel["x86-gcc", f] > 1.0005 else "", R + 14, y + 4, esc_md(w)))
-        desc.append("%s: Mac %.2f, x86-64 %.2f (%s)" % (f, rel["mac", f], rel["x86-gcc", f], w))
-    b.append('<line class="nj-charts-ref" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(1), top - 8, X(1), axis_y))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">as fast as the next</text>' % (X(1), top - 14))
-    wins = {p: sum(rel[p, f] < 1 for f in files) for p, _, _ in HELDOUT}
-    print("heldout: json_document fastest on %s" % wins)
-    write("perf_blog_heldout.svg", W, axis_y + 44, "nj-charts--blog", "nj-blog-heldout",
-          "Validating 19 files 3.13.0 was not tuned on: json_document's time relative to the fastest other library per file",
-          "Dot plot per file, less is better; below 1.0 json_document is the fastest fully validating library. "
-          + "; ".join(desc) + ".", b)
-
-
-# ---------- the price: compile time of two programs against 3.12.0 ----------
-# CPU time of the compiler in ms, median of 5 interleaved rounds, C++20, M1 Max (the post's appendix G)
-# (3.12.0, 3.13.0, 3.13.0 with a precompiled header, 3.13.0 as a module)
-PRICE = [
-    ("Apple clang 21, -O0 (debug)", [("count_numbers", 955.0, 1320.5, 688.5, 917.5), ("server_config", 1113.2, 1496.4, 862.6, 1135.5)]),
-    ("Apple clang 21, -O2", [("count_numbers", 1393.2, 2081.0, 1458.4, 1684.6), ("server_config", 1753.5, 2545.6, 1925.3, 2168.6)]),
-    ("GCC 16, -O0 (debug)", [("count_numbers", 1569.4, 2548.4, 1725.0, 1699.8), ("server_config", 2025.4, 2985.1, 2301.6, 2325.8)]),
-    ("GCC 16, -O2", [("count_numbers", 2336.0, 3701.5, 2986.8, 2913.4), ("server_config", 3121.5, 4714.2, 4006.2, 4054.9)]),
-]
-PRICE_SERIES = [("3.13.0", "nj-charts-c2"), ("3.13.0, precompiled header", "nj-charts-c1"), ("3.13.0, module", "nj-charts-c3")]
-
-
-def price():
-    W, L, R = 600, 150, 560
-    lo, hi = -50, 70
-    X = lambda pct: L + (pct - lo) / (hi - lo) * (R - L)
-    pct = lambda new, old: round((new / old - 1) * 100)
-    lab = lambda p: (MINUS + "%d %%" % -p) if p < 0 else "+%d %%" % p
-    bh, pitch, gap = 11, 14, 10
-    b, desc = [], []
-    # the key above the plot
-    x = 8
-    for name, cls in PRICE_SERIES:
-        b.append('<rect class="%s" x="%g" y="6" width="12" height="12" rx="3"/>' % (cls, x))
-        b.append('<text class="nj-charts-leg" x="%g" y="16.5">%s</text>' % (x + 18, esc(name)))
-        x += 18 + 8.2 * len(name) + 22
-    top = 54
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">as fast as 3.12.0</text>' % (X(0), top - 8))
-    y = top
-    for build, progs in PRICE:
-        b.append('<text class="nj-charts-panel" x="8" y="%g">%s</text>' % (y + 14, esc(build)))
-        y += 24
-        y0, at = y, len(b)
-        for prog, old, *new in progs:
-            b.append('<text class="nj-charts-rowlabel nj-charts-code" x="%g" y="%g" text-anchor="end">%s</text>'
-                     % (L - 8, y + 1.5 * pitch + 2, prog))
-            for (name, cls), t in zip(PRICE_SERIES, new):
-                p = pct(t, old)
-                b.append('<path class="%s" d="%s"><title>%s, %s, %s: %s ms against %s ms with 3.12.0 (%s)</title></path>'
-                         % (cls, hbar(X(0), X(p), y, bh), prog, esc(build), esc(name), format(round(t), ","), format(round(old), ","), lab(p)))
-                if p < 0:
-                    b.append('<text class="nj-charts-val" x="%g" y="%g" text-anchor="end">%s</text>' % (X(p) - 5, y + bh - 1.5, lab(p)))
-                else:
-                    b.append('<text class="nj-charts-val" x="%g" y="%g">%s</text>' % (X(p) + 5, y + bh - 1.5, lab(p)))
-                desc.append("%s, %s, %s: %s" % (build, prog, name, lab(p).replace(MINUS, "-")))
-                y += pitch
-            y += gap - (pitch - bh)
-        # the grid behind this panel's bars only, so that it doesn't cross the panel titles
-        b[at:at] = ['<line class="nj-charts-grid" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(t), y0 - 4, X(t), y - gap + 4)
-                    for t in range(lo + 10, hi + 1, 20) if t]
-        y += 8
-    axis_y = y
-    b.append('<line class="nj-charts-ref" x1="%g" y1="%g" x2="%g" y2="%g"/>' % (X(0), top - 2, X(0), axis_y))
-    for t in range(lo + 10, hi + 1, 20):
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%s</text>' % (X(t), axis_y + 16, "0" if t == 0 else lab(t)))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">compile time compared with 3.12.0, less is better</text>' % ((L + R) / 2, axis_y + 34))
-    write("perf_blog_price.svg", W, axis_y + 44, "nj-charts--blog", "nj-blog-price",
-          "Compile time of two programs with 3.13.0, alone, with a precompiled header and as a module, compared with 3.12.0",
-          "Horizontal bars of the change in compile time against 3.12.0, less is better. " + "; ".join(desc) + ".", b)
-
-
-# ---------- use cases: libraries x use cases, relative time ----------
-# data/perf_usecases_<platform>.json is written by tests/benchmarks/json_view/others/summarize.py --json
-UC_FILES = ["twitter", "citm_catalog", "canada", "jeopardy"]
-USE_CASES = [("validate", "validate"), ("sum", "sum"), ("select", "select"),
-             ("edit", "edit"), ("minify", "minify"), ("write", "write")]
-UC_LIBS = {   # library in the JSON -> row label
-    "nlohmann json_document": "nlohmann/json json_document", "nlohmann json": "nlohmann/json json",
-    "yyjson": "yyjson", "simdjson": "simdjson", "sonic-cpp": "sonic-cpp", "Glaze": "Glaze", "Boost.JSON": "Boost.JSON",
-    "RapidJSON": "RapidJSON", "sonic-rs": "sonic-rs (Rust)", "simd-json": "simd-json (Rust)", "serde_json": "serde_json (Rust)",
-}
-UC_PLATFORMS = [("mac", "Use cases: time of each library relative to the fastest, Apple M1 Max"),
-                ("x86-gcc", "Use cases: time of each library relative to the fastest, x86-64 with GCC 16.2"),
-                ("x86-gcc13", "Use cases: time of each library relative to the fastest, x86-64 with GCC 13"),
-                ("x86-clang", "Use cases: time of each library relative to the fastest, x86-64 with Clang 23")]
-LEVEL_MARK = {"no UTF-8": "U", "partial": "P", "full": ""}
-# why a cell is empty (the tooltips of the n/a cells)
-NA = {("simdjson", "edit"): "simdjson's documents are read-only: it has no API to change a value and write the result"}
-
-
-def geomean(xs):
-    return math.exp(sum(math.log(x) for x in xs) / len(xs))
-
-
-WRITING = ("edit", "minify", "write")   # the use cases that write numbers
-NUMBER_TEXT = ("source numbers", "raw numbers")   # variants that write each number by copying its text
-
-
-def normalize_usecases(data):
-    """Chooses each library's best variants again with the rules of the post: variants that reuse a parser or document
-    across calls are measured but not chosen. Variants that write each number by copying its text instead of formatting
-    it (json_document's number_format::source, yyjson's and RapidJSON's raw numbers in edit, minify and write) are not
-    chosen as the fully validating way, but as a way that does less, marked "N" like "U" and "P". Skipping the number
-    conversion while reading is allowed. Each pick has a "mark": "", or the letters of what it skips"""
-    data = json.loads(json.dumps(data))
-    rank = {"full": 0, "n/a": 0, "no UTF-8": 1, "partial": 2}
-    for uc, files in data.items():
-        numtext = lambda k: uc in WRITING and any(w in k for w in NUMBER_TEXT)
-        for cell in files.values():
-            for e in cell.values():
-                vs = [(v["us"], k, v["level"]) for k, v in e["variants"].items() if "reused" not in k]
-                full = [v for v in vs if rank[v[2]] == 0 and not numtext(v[1])]
-                pick = lambda v: {"us": v[0], "variant": v[1], "level": "full" if rank[v[2]] == 0 else v[2],
-                                  "mark": " ".join(m for m in (LEVEL_MARK.get(v[2], ""), "N" if numtext(v[1]) else "") if m)}
-                e["best"] = pick(min(full)) if full else None
-                e["best_any"] = pick(min(vs))
-    return data
-
-
-FILE_NAMES = {"twitter": "twitter.json", "citm_catalog": "citm_catalog.json", "canada": "canada.json",
-              "jeopardy": "jeopardy.json"}
-# what a variant that checks less skips, worded as the trade it is (the tooltips of the heatmaps)
-CHECKS_LESS = [
-    ("simdjson", "On-Demand", "reads lazily: On-Demand reads only what you ask for and steps over the rest by matching brackets"),
-    ("simdjson", "minify", "simdjson::minify() only removes whitespace, without parsing the values"),
-    ("Glaze", "lazy_json", "reads lazily: lazy_json reads only what you ask for and steps over the rest"),
-    ("Glaze", "minify_json", "minify_json only removes whitespace, without parsing the values"),
-    ("Glaze", "generic", "accepts trailing garbage after the value: Glaze's default (validate_trailing_whitespace checks it)"),
-    ("Glaze", "structs", "reads into structs and steps over fields it doesn't know without checking them "
-                         "(validate_skipped checks them too)"),
-    ("RapidJSON", "", "trusts UTF-8: RapidJSON's default (kParseValidateEncodingFlag checks it)"),
-    ("sonic-cpp", "", "trusts UTF-8: sonic-cpp 1.0.2 doesn't check it"),
-    ("serde_json", "", "trusts UTF-8 in the strings it skips (from_slice); strings it reads are checked"),
-]
-# what a variant that copies number text does (the "N" half of edit, minify and write)
-NUMBER_TEXT_TIPS = {
-    "nlohmann json_document": "copies each number's text instead of formatting it (number_format::source)",
-    "yyjson": "copies each number's text instead of formatting it (YYJSON_READ_NUMBER_AS_RAW)",
-    "RapidJSON": "copies each number's text instead of formatting it (kParseNumbersAsStringsFlag)",
-}
-
-
-def checks_less(lib, variant):
-    for l, v, text in CHECKS_LESS:
-        if l == lib and v in variant:
-            return text
-    return "checks less"
-
-
-def usecase_table(data):
-    """{library: {use case: cell}}: per library the geometric mean over UC_FILES of its fastest fully validating time
-    ("full") and of its fastest time at any level ("alt", only if it is at least 3 % faster), each divided by the best
-    such fully validating mean in the use case, so that every file counts equally and the fastest library is 1.00"""
-    out = {}
-    data = normalize_usecases(data)
-    for uc, _ in USE_CASES:
-        files = data.get(uc, {})
-        if not files:
-            continue
-        cells = {}
-        for lib in UC_LIBS:
-            es = [files.get(f, {}).get(lib) for f in UC_FILES]
-            if not all(es):
-                continue
-            full = [e["best"] for e in es]
-            alt = [e["best_any"] for e in es]
-            cells[lib] = {"full": geomean([b["us"] for b in full]) if all(full) else None, "alt": geomean([a["us"] for a in alt]),
-                          "files": [(f, b, a) for f, b, a in zip(UC_FILES, full, alt)]}
-        ref = min(c["full"] for c in cells.values() if c["full"])
-        for lib, c in cells.items():
-            full = c["full"] / ref if c["full"] else None
-            alt = c["alt"] / ref
-            if full is not None and alt > full * 0.97:
-                alt = None
-            levels = {a["level"] for _, _, a in c["files"]} if alt is not None else set()
-            level = "partial" if "partial" in levels else "no UTF-8" if "no UTF-8" in levels else "full"
-            numtext = alt is not None and any("N" in a["mark"].split() for _, _, a in c["files"])
-            marks = " ".join(m for m in (LEVEL_MARK[level], "N" if numtext else "") if m)
-            out.setdefault(lib, {})[uc] = {"full": full, "alt": alt, "level": level, "marks": marks, "files": c["files"]}
-    return out
-
-
-# cell colors: green for the fastest, gray around twice the time, red for the slowest; the upper bounds of the steps
-HEAT_STEPS = [1.15, 1.5, 2.5, 5, float("inf")]
-HEAT_LABELS = ["below 1.15", "1.15 to 1.5", "1.5 to 2.5", "2.5 to 5", "5 and more"]
-
-
-def heat(r):
-    return next(i for i, b in enumerate(HEAT_STEPS) if r < b)
-
-
-def fr(r):
-    return "%.2f" % r if r < 9.995 else "%.1f" % r if r < 99.95 else "%.0f" % r
-
-
-def fus(us):
-    return "{:,.0f} µs".format(us) if us >= 100 else "%.1f µs" % us
-
-
-def tip(lib, uc_label, c, half):
-    """the tooltip of a cell: lines separated by newlines (&#10; in the attribute), the first one the heading"""
-    if half == "full":
-        lines = ["%s · %s" % (UC_LIBS[lib], uc_label),
-                 "%s× the time of the fastest library (fully validating)" % fr(c["full"])]
-        picks = [(f, b) for f, b, _ in c["files"]]
-    else:
-        lines = ["%s · %s, checking less" % (UC_LIBS[lib], uc_label),
-                 "%s× the time of the fastest fully validating library" % fr(c["alt"])]
-        picks = [(f, a) for f, _, a in c["files"]]
-    ways = sorted({e["variant"] for _, e in picks})
-    if len(ways) == 1:
-        lines.append("way: %s" % ways[0])
-    for f, e in picks:
-        lines.append("%s: %s%s%s" % (FILE_NAMES[f], fus(e["us"]), "" if len(ways) == 1 else " · " + e["variant"],
-                                     " (validates fully)" if half == "alt" and e["level"] == "full" else ""))
-    if half == "alt":
-        seen = []
-        for _, e in picks:
-            ts = ([checks_less(lib, e["variant"])] if e["level"] != "full" else []) + \
-                 ([NUMBER_TEXT_TIPS.get(lib, "copies each number's text instead of formatting it")] if "N" in e["mark"].split() else [])
-            for t in ts:
-                if t not in seen:
-                    seen.append(t)
-        lines += seen
-    if any("(copy)" in e["variant"] for _, e in picks):
-        lines.append("(copy): parses in place, on a copy of the input that is part of the time")
-    return "&#10;".join(lines)
-
-
-def heatmap(platform, title):
-    data = json.load((HERE / "data" / ("perf_usecases_%s.json" % platform)).open())
-    t = usecase_table(data)
-    libs = [l for l in UC_LIBS if l in t]
-    score = lambda l: geomean([v["full"] or v["alt"] for v in t[l].values()])   # the mean of the row as shown
-    libs.sort(key=score)
-    W, L, cw, ch, top = 784, 224, 92, 36, 44
-    b, desc = [], []
-    for j, (uc, label) in enumerate(USE_CASES):
-        b.append('<text class="nj-charts-tick" x="%g" y="%g">%s</text>' % (L + j * cw + cw / 2, top - 10, esc(label)))
-    for i, lib in enumerate(libs):
-        y = top + i * ch
-        cls = "nj-charts-name-json" if lib.startswith("nlohmann") else ""
-        b.append('<text class="nj-charts-rowlabel %s" x="%g" y="%g" text-anchor="end">%s</text>' % (cls, L - 8, y + ch / 2 + 4, esc(UC_LIBS[lib])))
-        for j, (uc, label) in enumerate(USE_CASES):
-            x = L + j * cw
-            c = t[lib].get(uc)
-            if c is None:
-                b.append('<g class="nj-heat-cell" tabindex="0" data-tip="%s">' % esc("%s · %s&#10;%s" % (UC_LIBS[lib], label, NA.get((lib, uc), "the library has no API for this use case"))))
-                b.append('<rect class="nj-heat-na" x="%g" y="%g" width="%g" height="%g" rx="3"/>' % (x + 1, y + 1, cw - 2, ch - 2))
-                b.append('<text class="nj-charts-tick" x="%g" y="%g">n/a</text>' % (x + cw / 2, y + ch / 2 + 4))
-                b.append('</g>')
-                desc.append("%s %s: n/a" % (UC_LIBS[lib], label))
-                continue
-            halves = []
-            if c["full"] is not None:
-                halves.append(("full", c["full"]))
-            if c["alt"] is not None:
-                halves.append(("alt", c["alt"]))
-            hw = (cw - 2) / len(halves)
-            for k, (half, r) in enumerate(halves):
-                hx = x + 1 + k * hw
-                gap = 1 if len(halves) == 2 else 0
-                b.append('<g class="nj-heat-cell" tabindex="0" data-tip="%s">' % esc(tip(lib, label, c, half)))
-                b.append('<rect class="nj-heat-%d" x="%g" y="%g" width="%g" height="%g" rx="3"/>'
-                         % (heat(r), hx + (gap if k else 0), y + 1, hw - gap, ch - 2))
-                cx = hx + hw / 2
-                if half == "alt":
-                    b.append('<text class="nj-charts-cell" x="%g" y="%g" text-anchor="middle">%s</text>' % (cx, y + 16, fr(r)))
-                    b.append('<text class="nj-charts-cell nj-charts-cell--small" x="%g" y="%g" text-anchor="middle">%s</text>'
-                             % (cx, y + 29, c["marks"]))
-                else:
-                    b.append('<text class="nj-charts-cell" x="%g" y="%g" text-anchor="middle">%s</text>' % (cx, y + ch / 2 + 4, fr(r)))
-                b.append('</g>')
-            if c["full"] is None:   # no fully validating way: the left half stays empty
-                pass
-            desc.append("%s %s: %s%s" % (UC_LIBS[lib], label, fr(c["full"]) if c["full"] else "no fully validating way",
-                                         (" (%s doing less, %s)" % (fr(c["alt"]), c["marks"])) if c["alt"] else ""))
-    # the key, set apart from the grid and narrower than its columns, so that it doesn't read as a row of it
-    yb = top + len(libs) * ch + 28
-    b.append('<text class="nj-charts-tick nj-charts-tick--l" x="8" y="%g">time relative to the fastest fully validating library, less is better</text>' % (yb + 4))
-    kw, ky = 76, yb + 14
-    for i, lab in enumerate(HEAT_LABELS):
-        # each swatch in its own group, so that the ink rule for the strong steps (a sibling selector) stays inside it
-        b.append('<g><rect class="nj-heat-%d" x="%g" y="%g" width="%g" height="20" rx="3"/>' % (i, 8 + i * (kw + 4), ky, kw))
-        b.append('<text class="nj-charts-cell nj-charts-cell--small" x="%g" y="%g" text-anchor="middle">%s</text></g>' % (8 + i * (kw + 4) + kw / 2, ky + 14, esc(lab)))
-    nx = 8 + len(HEAT_LABELS) * (kw + 4) + 12
-    b.append('<rect class="nj-heat-na" x="%g" y="%g" width="%g" height="20" rx="3"/>' % (nx, ky, 40))
-    b.append('<text class="nj-charts-tick" x="%g" y="%g">n/a</text>' % (nx + 20, ky + 14))
-    b.append('<text class="nj-charts-tick nj-charts-tick--l" x="%g" y="%g">no API for it</text>' % (nx + 48, ky + 14))
-    write("perf_blog_usecases_%s.svg" % platform, W, ky + 28, "nj-charts--blog nj-charts--heat", "nj-blog-uc-" + platform, title,
-          "Table of relative times, libraries by use case. " + "; ".join(desc) + ".", b)
-
-
-if __name__ == "__main__":
-    swar()
-    overlap()
-    digits()
-    heldout()
-    if OVERVIEW:
-        overview()
-    distribution()
-    if TIMELINE:
-        timeline()
-    if CLIFFS:
-        cliffs()
-    price()
-    for platform, title in UC_PLATFORMS:
-        if (HERE / "data" / ("perf_usecases_%s.json" % platform)).exists():
-            heatmap(platform, title)

docs/mkdocs/scripts/figures/perf_blog_tables.py

@@ -1,66 +0,0 @@
-"""Prints the tables of Appendix E of home/blog/how_3_13_0_got_faster.md (comparison with other libraries) as Markdown,
-from data/perf_usecases_<platform>.json, which tests/benchmarks/json_view/others/summarize.py --json writes.
-
-Usage: python3 scripts/figures/perf_blog_tables.py <platform> [title]
-"""
-import json
-import sys
-from pathlib import Path
-
-from perf_blog import normalize_usecases
-
-HERE = Path(__file__).resolve().parent
-FILES = [("twitter", "`twitter.json`"), ("citm_catalog", "`citm_catalog.json`"), ("canada", "`canada.json`"),
-         ("jeopardy", "`jeopardy.json`"), ("status", "one status (2.5 KB)")]
-USE_CASES = [("validate", "validate"), ("sum", "sum"), ("select", "select"), ("edit", "edit"), ("minify", "minify"),
-             ("write", "write")]
-NAMES = {"nlohmann json_document": "nlohmann/json `json_document`", "nlohmann json": "nlohmann/json `json`",
-         "sonic-rs": "sonic-rs (Rust)", "simd-json": "simd-json (Rust)", "serde_json": "serde_json (Rust)"}
-
-
-def fmt(us):
-    if us >= 10000:
-        return "{:,.0f}".format(us)
-    if us >= 100:
-        return "{:,.0f}".format(us)
-    return "%.1f" % us
-
-
-def table(data, uc, indent):
-    files = [f for f, _ in FILES if f in data.get(uc, {})]
-    libs = list(data[uc][files[0]].keys())
-    jd = lambda f: data[uc][f]["nlohmann json_document"]["best"]["us"]
-    libs.sort(key=lambda l: sum(((data[uc][f][l]["best"] or data[uc][f][l]["best_any"])["us"] / jd(f)) for f in files))
-    head = "| library | variant | " + " | ".join(n for f, n in FILES if f in files) + " |"
-    rows = [head, "| --- | --- | " + " | ".join("--:" for _ in files) + " |"]
-    for lib in libs:
-        best = [data[uc][f][lib]["best"] for f in files]
-        anyv = [data[uc][f][lib]["best_any"] for f in files]
-        names = sorted({b["variant"] for b in best if b} | {a["variant"] + " [%s]" % a["mark"] for b, a in zip(best, anyv) if a["mark"] and (not b or a["us"] < b["us"])})
-        cells = []
-        for b, a in zip(best, anyv):
-            c = fmt(b["us"]) if b else "–"
-            if a["mark"] and (not b or a["us"] < b["us"] * 0.97):
-                c += " (%s %s)" % (a["mark"], fmt(a["us"]))
-            cells.append(c)
-        bold = "**%s**" if lib == "nlohmann json_document" else "%s"
-        rows.append("| %s | %s | %s |" % (bold % NAMES.get(lib, lib), ", ".join(names), " | ".join(cells)))
-    return "\n".join(indent + r for r in rows)
-
-
-def main():
-    platform = sys.argv[1]
-    data = json.load((HERE / "data" / ("perf_usecases_%s.json" % platform)).open())
-    data = normalize_usecases(data)   # the same choices as the figure
-    out = []
-    for uc, label in USE_CASES:
-        if uc not in data:
-            continue
-        out.append("**%s**\n" % label)
-        out.append(table(data, uc, ""))
-        out.append("")
-    print("\n".join(out))
-
-
-if __name__ == "__main__":
-    main()

include/nlohmann/detail/conversions/from_json.hpp

@@ -91,7 +91,7 @@ const typename BasicJsonType::binary_t& binary_value(const BasicJsonType& j)
 }
 
 template<typename View, enable_if_t<is_json_view<View>::value, int> = 0>
-typename View::basic_json_type::binary_t binary_value(const View& /*unused*/)
+typename View::basic_json_type::binary_t binary_value(const View& /*unused*/) // LCOV_EXCL_LINE
 {
     return {}; // LCOV_EXCL_LINE
 }

include/nlohmann/detail/exceptions.hpp

@@ -198,18 +198,19 @@ class exception : public std::exception
             // all other parent types (primitives) contribute no token
         }
 
-        if (tokens.empty())
+        // the root value has no path, but still has a byte range
+        std::string prefix;
+        if (!tokens.empty())
         {
-            return "";
+            const auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+                                             [](const std::string & a, const std::string & b)
+            {
+                return concat(a, '/', detail::escape(b));
+            });
+            prefix = concat('(', str, ") ");
         }
 
-        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
-                                   [](const std::string & a, const std::string & b)
-        {
-            return concat(a, '/', detail::escape(b));
-        });
-
-        return concat('(', str, ") ", get_byte_positions(leaf_element));
+        return concat(prefix, get_byte_positions(leaf_element));
 #else
         return get_byte_positions(leaf_element);
 #endif
@@ -222,7 +223,8 @@ class exception : public std::exception
     template<typename BasicJsonType>
     static std::string get_byte_positions(const BasicJsonType* leaf_element)
     {
-        if ((leaf_element->start_pos() != std::string::npos) && (leaf_element->end_pos() != std::string::npos))
+        // a value-initialized iterator has no value (invalid_iterator.212)
+        if (leaf_element != nullptr && leaf_element->start_pos() != std::string::npos && leaf_element->end_pos() != std::string::npos)
         {
             return concat("(bytes ", std::to_string(leaf_element->start_pos()), "-", std::to_string(leaf_element->end_pos()), ") ");
         }
@@ -431,6 +433,28 @@ std::nullptr_t exception_context(const View& /*unused*/) noexcept
     return nullptr;
 }
 
+namespace view
+{
+// the path and bytes of the value of a view (defined in <nlohmann/detail/view/errors.hpp>)
+template<typename View>
+std::string diagnostics_of(const View& v);
+}  // namespace view
+
+// what goes in front of the message of an exception about j: nothing for a
+// basic_json value (exception_context() passes the value itself), the context
+// basic_json would add (JSON_DIAGNOSTICS, JSON_DIAGNOSTIC_POSITIONS) for a view
+template<typename BasicJsonType, enable_if_t<is_basic_json<BasicJsonType>::value, int> = 0>
+const char* exception_prefix(const BasicJsonType& /*unused*/) noexcept
+{
+    return "";
+}
+
+template<typename View, enable_if_t<is_json_view<View>::value, int> = 0>
+std::string exception_prefix(const View& v)
+{
+    return view::diagnostics_of(v);
+}
+
 /*!
 @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"
@@ -442,7 +466,7 @@ JSON_HEDLEY_NO_RETURN JSON_HEDLEY_NEVER_INLINE void throw_type_must_be(const cha
 {
     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()), exception_context(j)));
+    JSON_THROW(type_error::create(exception_id::type_mismatch, concat(exception_prefix(j), "type must be ", expected, ", but is ", j.type_name()), exception_context(j)));
 }
 
 /*!

include/nlohmann/detail/input/binary_reader.hpp

@@ -22,6 +22,7 @@
     #include <bit>  //byteswap
 #endif
 
+#include <nlohmann/detail/bit_ops.hpp>
 #include <nlohmann/detail/exceptions.hpp>
 #include <nlohmann/detail/input/input_adapters.hpp>
 #include <nlohmann/detail/input/json_sax.hpp>
@@ -465,15 +466,19 @@ class binary_reader
             }
 
             const std::size_t element_type_parse_position = chars_read;
+            // an array's elements are named "0", "1", ... in the wire format,
+            // and those names are not passed on: they are skipped, and only
+            // checked if error_handler_t::strict must reject ill-formed UTF-8
+            const bool is_object = container_stack.back().is_object;
             key.clear();
-            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            if (JSON_HEDLEY_UNLIKELY(!(is_object || error_handler != error_handler_t::strict
+                                       ? get_bson_cstr(key, is_object)
+                                       : check_bson_cstr(key, std::integral_constant<bool, bulk_scan> {}))))
             {
                 return false;
             }
 
-            // an array's elements are named "0", "1", ... in the wire format,
-            // and those names are not passed on
-            if (container_stack.back().is_object && !sax->key(key))
+            if (is_object && !sax->key(key))
             {
                 return false;
             }
@@ -489,14 +494,18 @@ class binary_reader
     @brief Parses a C-style string from the BSON input.
     @param[in,out] result  A reference to the string variable where the read
                             string is to be stored.
+    @param[in] store  whether the characters are needed; if not (the names of
+                      an array's elements), they are skipped and @a result may
+                      be left unchanged, and they are not checked against
+                      @ref error_handler (@ref check_bson_cstr checks them)
     @return `true` if the \\x00-byte indicating the end of the string was
              encountered before the EOF; false` indicates an unexpected EOF.
     */
-    bool get_bson_cstr(string_t& result)
+    bool get_bson_cstr(string_t& result, const bool store = true)
     {
-        if (get_bson_cstr_bulk(result, std::integral_constant<bool, bulk_scan> {}))
+        if (get_bson_cstr_bulk(result, store, std::integral_constant<bool, bulk_scan> {}))
         {
-            return check_string_utf8(result, "key");
+            return !store || check_string_utf8(result, "key");
         }
 
         auto out = std::back_inserter(result);
@@ -509,7 +518,7 @@ class binary_reader
             }
             if (current == 0x00)
             {
-                return check_string_utf8(result, "key");
+                return !store || check_string_utf8(result, "key");
             }
             *out++ = static_cast<typename string_t::value_type>(current);
         }
@@ -519,10 +528,11 @@ class binary_reader
     @brief read a C-style string from contiguous input in one step
 
     @param[in,out] result  the string to append to
+    @param[in] store  whether to append the characters to @a result
     @return whether the string was read; if the input has no \\x00-byte, nothing
             is read, and @ref get_bson_cstr reports the end of the input
     */
-    bool get_bson_cstr_bulk(string_t& result, std::true_type /*bulk*/)
+    bool get_bson_cstr_bulk(string_t& result, const bool store, std::true_type /*bulk*/)
     {
         const std::size_t remaining = ia.bulk_remaining();
         if (remaining == 0)
@@ -530,18 +540,15 @@ class binary_reader
             return false;
         }
         const auto* const data = reinterpret_cast<const unsigned char*>(ia.bulk_data());
-        // a plain loop rather than std::memchr: most keys are short (array
-        // indices are keys, too), and the call would cost more than it saves
-        std::size_t length = 0;
-        while (length < remaining && data[length] != 0x00)
-        {
-            ++length;
-        }
+        const std::size_t length = find_zero_byte(data, remaining);
         if (length == remaining)
         {
             return false;
         }
-        result.append(reinterpret_cast<const typename string_t::value_type*>(data), length);
+        if (store)
+        {
+            result.append(reinterpret_cast<const typename string_t::value_type*>(data), length);
+        }
         // consume the string and its \x00-byte, as the byte-wise path does
         ia.bulk_skip(length + 1);
         chars_read += length + 1;
@@ -549,8 +556,44 @@ class binary_reader
         return true;
     }
 
+    /*!
+    @brief skip a C-style string that error_handler_t::strict must check
+
+    The names of an array's elements are not passed on. On contiguous input,
+    a well-formed name is checked in place and skipped without being copied.
+    Otherwise (no \\x00-byte in the input that can be scanned, or ill-formed
+    UTF-8), it is read by @ref get_bson_cstr, which reports the error.
+
+    @param[in,out] result  an empty string, which may receive the name
+    @return whether the name was read and is well-formed
+    */
+    bool check_bson_cstr(string_t& result, std::true_type /*bulk*/)
+    {
+        const std::size_t remaining = ia.bulk_remaining();
+        if (remaining != 0)
+        {
+            const auto* const data = reinterpret_cast<const unsigned char*>(ia.bulk_data());
+            const std::size_t length = find_zero_byte(data, remaining);
+            if (length != remaining && JSON_HEDLEY_LIKELY(valid_utf8_string(data, length)))
+            {
+                // consume the string and its \x00-byte, as get_bson_cstr does
+                ia.bulk_skip(length + 1);
+                chars_read += length + 1;
+                current = 0x00;
+                return true;
+            }
+        }
+        return get_bson_cstr(result);
+    }
+
+    /// input that is not contiguous: the name is read and checked byte by byte
+    bool check_bson_cstr(string_t& result, std::false_type /*bulk*/)
+    {
+        return get_bson_cstr(result);
+    }
+
     /// input that is not contiguous: C-style strings are read byte by byte
-    bool get_bson_cstr_bulk(string_t& /*result*/, std::false_type /*bulk*/) const noexcept
+    bool get_bson_cstr_bulk(string_t& /*result*/, const bool /*store*/, std::false_type /*bulk*/) const noexcept
     {
         return false;
     }
@@ -741,11 +784,13 @@ class binary_reader
     bool get_cbor_negative_integer()
     {
         NumberType number{};
-        if (JSON_HEDLEY_UNLIKELY(!get_number(number)))
-        {
-            return false;
-        }
+        return get_number(number) && emit_cbor_negative_integer(number);
+    }
 
+    /// pass the CBOR negative integer -1 - @a number to the SAX parser
+    template<typename NumberType>
+    bool emit_cbor_negative_integer(const NumberType number)
+    {
         // the value is -1 - number, which fits into number_integer_t
         // whenever number does; the outer cast undoes the integral promotion
         // for number_integer_t types narrower than int
@@ -970,7 +1015,7 @@ class binary_reader
             case 0x95:
             case 0x96:
             case 0x97:
-                return enter_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu));
+                return enter_cbor_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu));
 
             case 0x98: // array (one-byte uint8_t for n follows)
             case 0x99: // array (two-byte uint16_t for n follow)
@@ -979,7 +1024,7 @@ class binary_reader
             {
                 std::uint64_t len{};
                 std::size_t size{};
-                return get_cbor_argument(len) && get_cbor_container_size(len, size, "array") && enter_array(size);
+                return get_cbor_argument(len) && get_cbor_container_size(len, size, "array") && enter_cbor_array(size);
             }
 
             case 0x9F: // array (indefinite length)
@@ -1133,16 +1178,10 @@ class binary_reader
                 return get_half_float(false);
 
             case 0xFA: // Single-Precision Float (four-byte IEEE 754)
-            {
-                float number{};
-                return get_number(number) && emit_float(number);
-            }
+                return get_cbor_float<float>();
 
             case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
-            {
-                double number{};
-                return get_number(number) && emit_float(number);
-            }
+                return get_cbor_float<double>();
 
             default: // anything else (0xFF is handled inside the other types)
             {
@@ -1151,6 +1190,14 @@ class binary_reader
         }
     }
 
+    /// read a single- or double-precision float
+    template<typename NumberType>
+    bool get_cbor_float()
+    {
+        NumberType number{};
+        return get_number(number) && emit_float(number);
+    }
+
     /*!
     @brief reports a nested indefinite-length CBOR string or byte array
     @param[in] type_name  name of the rejected string type
@@ -1676,6 +1723,159 @@ class binary_reader
         return true;
     }
 
+    /*!
+    @brief read a big-endian number of type @a NumberType at @a data
+    */
+    template<typename NumberType>
+    NumberType load_big_endian(const unsigned char* data) const noexcept
+    {
+        NumberType result{};
+        std::memcpy(&result, data, sizeof(NumberType));
+        if (is_little_endian)
+        {
+            byte_swap(result);
+        }
+        return result;
+    }
+
+    /*!
+    @brief read the integers, floats, booleans, and nulls that follow in a
+           definite-length array, without the per-element bookkeeping of
+           @ref parse_cbor_internal
+
+    Stops at the end of the array, at any other kind of value, and when fewer
+    than 9 bytes (the longest of these values) are left in the input, leaving
+    those to @ref parse_cbor_value, which reads them the same way.
+
+    Out of line, so that @ref parse_cbor_value stays small enough to be inlined.
+
+    The array is the one on top of @ref container_stack; its count of
+    elements not yet read is updated.
+
+    @return whether the SAX parser accepted the values
+    */
+    JSON_HEDLEY_NEVER_INLINE
+    bool parse_cbor_scalar_run(std::true_type /*bulk*/)
+    {
+        // nothing pushes onto the stack while the run reads scalars
+        std::size_t& remaining = container_stack.back().remaining;
+        while (remaining != 0 && ia.bulk_remaining() >= 9)
+        {
+            const auto* const data = reinterpret_cast<const unsigned char*>(ia.bulk_data());
+            const unsigned char head = data[0];
+            std::size_t size = 0;
+            bool accepted = false;
+            switch (head)
+            {
+                case 0x18:
+                    size = 2;
+                    accepted = emit_unsigned(data[1]);
+                    break;
+                case 0x19:
+                    size = 3;
+                    accepted = emit_unsigned(load_big_endian<std::uint16_t>(data + 1));
+                    break;
+                case 0x1A:
+                    size = 5;
+                    accepted = emit_unsigned(load_big_endian<std::uint32_t>(data + 1));
+                    break;
+                case 0x1B:
+                    size = 9;
+                    accepted = emit_unsigned(load_big_endian<std::uint64_t>(data + 1));
+                    break;
+                case 0x38:
+                    size = 2;
+                    accepted = emit_cbor_negative_integer(data[1]);
+                    break;
+                case 0x39:
+                    size = 3;
+                    accepted = emit_cbor_negative_integer(load_big_endian<std::uint16_t>(data + 1));
+                    break;
+                case 0x3A:
+                    size = 5;
+                    accepted = emit_cbor_negative_integer(load_big_endian<std::uint32_t>(data + 1));
+                    break;
+                case 0x3B:
+                    size = 9;
+                    accepted = emit_cbor_negative_integer(load_big_endian<std::uint64_t>(data + 1));
+                    break;
+                case 0xF4:
+                    size = 1;
+                    accepted = sax->boolean(false);
+                    break;
+                case 0xF5:
+                    size = 1;
+                    accepted = sax->boolean(true);
+                    break;
+                case 0xF6:
+                    size = 1;
+                    accepted = sax->null();
+                    break;
+                case 0xFA:
+                    size = 5;
+                    accepted = emit_float(load_big_endian<float>(data + 1));
+                    break;
+                case 0xFB:
+                    size = 9;
+                    accepted = emit_float(load_big_endian<double>(data + 1));
+                    break;
+                default:
+                    if (head <= 0x17)
+                    {
+                        size = 1;
+                        accepted = sax->number_unsigned(static_cast<number_unsigned_t>(head));
+                    }
+                    else if (head >= 0x20 && head <= 0x37)
+                    {
+                        size = 1;
+                        accepted = sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - head));
+                    }
+                    else
+                    {
+                        // any other value is read by parse_cbor_value
+                        return true;
+                    }
+                    break;
+            }
+            // as if read by get() and get_number(): current is the head byte
+            ia.bulk_skip(size);
+            chars_read += size;
+            current = head;
+            --remaining;
+            if (JSON_HEDLEY_UNLIKELY(!accepted))
+            {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /*!
+    @brief open a definite-length array and read the scalars it begins with
+           (see @ref parse_cbor_scalar_run)
+
+    Only the start of an array is tried, which covers arrays of numbers
+    (e.g. coordinates) but costs arrays of other values only one call, not one
+    per element. An array of one element is not tried at all: that element is
+    mostly an object or an array (`[[...]]`, the single ring of a GeoJSON
+    polygon), for which the call would find no scalar, while a single scalar,
+    which the run would read faster, is rare. The benchmarks
+    `FromBinaryShape/nested` and `FromBinaryShape/singles` show both sides.
+
+    @param[in] len  the number of elements
+    @return whether the SAX parser accepted the array and the values read
+    */
+    bool enter_cbor_array(const std::size_t len)
+    {
+        return enter_array(len) && (len <= 1 || parse_cbor_scalar_run(std::integral_constant<bool, bulk_scan> {}));
+    }
+
+    /// input that is not contiguous: every value is read by parse_cbor_value
+    bool parse_cbor_scalar_run(std::false_type /*bulk*/) const noexcept
+    {
+        return true;
+    }
+
     /*!
     @brief read a CBOR value and everything nested inside it
 
@@ -1705,6 +1905,7 @@ class binary_reader
                 // pop_back() below, which destroys the container_stack element
                 // it would otherwise alias
                 const container_frame top = container_stack.back();
+                const bool is_object = top.is_object;
                 bool at_end = false;
 
                 if (top.remaining != npos)
@@ -1716,7 +1917,7 @@ class binary_reader
                     {
                         // claim the element about to be read
                         --container_stack.back().remaining;
-                        if (top.is_object)
+                        if (is_object)
                         {
                             get();
                         }
@@ -1729,7 +1930,7 @@ class binary_reader
                     // Testing for it consumes a byte, which is the first byte
                     // of the next element when it is not one.
                     at_end = (get() == 0xFF);
-                    fetch = top.is_object;
+                    fetch = is_object;
                 }
 
                 if (at_end)
@@ -1746,7 +1947,7 @@ class binary_reader
                     continue;
                 }
 
-                if (top.is_object)
+                if (is_object)
                 {
                     if (JSON_HEDLEY_UNLIKELY(!skip_cbor_key_tags(tag_handler)))
                     {
@@ -1971,7 +2172,7 @@ class binary_reader
             case 0x9D:
             case 0x9E:
             case 0x9F:
-                return enter_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+                return enter_msgpack_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
 
             // fixstr
             case 0xA0:
@@ -2102,13 +2303,13 @@ class binary_reader
             case 0xDC: // array 16
             {
                 std::uint16_t len{};
-                return get_number(len) && enter_array(static_cast<std::size_t>(len));
+                return get_number(len) && enter_msgpack_array(static_cast<std::size_t>(len));
             }
 
             case 0xDD: // array 32
             {
                 std::uint32_t len{};
-                return get_number(len) && enter_array(conditional_static_cast<std::size_t>(len));
+                return get_number(len) && enter_msgpack_array(conditional_static_cast<std::size_t>(len));
             }
 
             case 0xDE: // map 16
@@ -2450,6 +2651,141 @@ class binary_reader
         }
     }
 
+    /*!
+    @brief read the integers, floats, booleans, and nils that follow in a
+           MessagePack array, without the per-element bookkeeping of
+           @ref parse_msgpack_internal
+
+    Stops at the end of the array, at any other kind of value, and when fewer
+    than 9 bytes (the longest of these values) are left in the input, leaving
+    those to @ref parse_msgpack_value, which reads them the same way.
+
+    Out of line, so that @ref parse_msgpack_value stays small enough to be inlined.
+
+    The array is the one on top of @ref container_stack; its count of
+    elements not yet read is updated.
+
+    @return whether the SAX parser accepted the values
+    */
+    JSON_HEDLEY_NEVER_INLINE
+    bool parse_msgpack_scalar_run(std::true_type /*bulk*/)
+    {
+        // nothing pushes onto the stack while the run reads scalars
+        std::size_t& remaining = container_stack.back().remaining;
+        while (remaining != 0 && ia.bulk_remaining() >= 9)
+        {
+            const auto* const data = reinterpret_cast<const unsigned char*>(ia.bulk_data());
+            const unsigned char head = data[0];
+            std::size_t size = 0;
+            bool accepted = false;
+            switch (head)
+            {
+                case 0xC0: // nil
+                    size = 1;
+                    accepted = sax->null();
+                    break;
+                case 0xC2: // false
+                    size = 1;
+                    accepted = sax->boolean(false);
+                    break;
+                case 0xC3: // true
+                    size = 1;
+                    accepted = sax->boolean(true);
+                    break;
+                case 0xCA: // float 32
+                    size = 5;
+                    accepted = emit_float(load_big_endian<float>(data + 1));
+                    break;
+                case 0xCB: // float 64
+                    size = 9;
+                    accepted = emit_float(load_big_endian<double>(data + 1));
+                    break;
+                case 0xCC: // uint 8
+                    size = 2;
+                    accepted = emit_unsigned(data[1]);
+                    break;
+                case 0xCD: // uint 16
+                    size = 3;
+                    accepted = emit_unsigned(load_big_endian<std::uint16_t>(data + 1));
+                    break;
+                case 0xCE: // uint 32
+                    size = 5;
+                    accepted = emit_unsigned(load_big_endian<std::uint32_t>(data + 1));
+                    break;
+                case 0xCF: // uint 64
+                    size = 9;
+                    accepted = emit_unsigned(load_big_endian<std::uint64_t>(data + 1));
+                    break;
+                case 0xD0: // int 8
+                    size = 2;
+                    accepted = emit_signed(static_cast<std::int8_t>(data[1]));
+                    break;
+                case 0xD1: // int 16
+                    size = 3;
+                    accepted = emit_signed(load_big_endian<std::int16_t>(data + 1));
+                    break;
+                case 0xD2: // int 32
+                    size = 5;
+                    accepted = emit_signed(load_big_endian<std::int32_t>(data + 1));
+                    break;
+                case 0xD3: // int 64
+                    size = 9;
+                    accepted = emit_signed(load_big_endian<std::int64_t>(data + 1));
+                    break;
+                default:
+                    if (head <= 0x7F)
+                    {
+                        // positive fixint
+                        size = 1;
+                        accepted = sax->number_unsigned(static_cast<number_unsigned_t>(head));
+                    }
+                    else if (head >= 0xE0)
+                    {
+                        // negative fixint
+                        size = 1;
+                        accepted = sax->number_integer(static_cast<std::int8_t>(head));
+                    }
+                    else
+                    {
+                        // any other value is read by parse_msgpack_value
+                        return true;
+                    }
+                    break;
+            }
+            // as if read by get() and get_number(): current is the last byte
+            ia.bulk_skip(size);
+            chars_read += size;
+            current = data[size - 1];
+            --remaining;
+            if (JSON_HEDLEY_UNLIKELY(!accepted))
+            {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /*!
+    @brief open a MessagePack array and read the scalars it begins with (see
+           @ref parse_msgpack_scalar_run)
+
+    An array of one element is not tried, for the reason given at
+    @ref enter_cbor_array.
+
+    @param[in] len  the number of elements
+    @return whether the SAX parser accepted the array and the values read
+    */
+    bool enter_msgpack_array(const std::size_t len)
+    {
+        return enter_array(len) && (len <= 1 || parse_msgpack_scalar_run(std::integral_constant<bool, bulk_scan> {}));
+    }
+
+    /// input that is not contiguous: every value is read by parse_msgpack_value
+    bool parse_msgpack_scalar_run(std::false_type /*bulk*/) const noexcept
+    {
+        return true;
+    }
+
     /*!
     @brief read a MessagePack value and everything nested inside it
 
@@ -3255,6 +3591,107 @@ class binary_reader
         return unexpected_byte("invalid byte", "value");
     }
 
+    /*!
+    @brief read the elements of an optimized array of numbers (type marker
+           @a type) that are in the input, in one loop, without the
+           per-element bookkeeping of @ref parse_ubjson_internal
+
+    Values are emitted as @ref get_ubjson_value emits them. Types other than
+    the fixed-size integers and floats are left to @ref get_ubjson_value, as
+    are the elements the input ends before.
+
+    @param[in,out] remaining  the number of elements not yet read
+    @param[in] type  the type marker of the elements
+    @return whether the SAX parser accepted the values
+    */
+    JSON_HEDLEY_NEVER_INLINE
+    bool parse_ubjson_typed_run(std::size_t& remaining, const char_int_type type, std::true_type /*bulk*/)
+    {
+        const bool bjdata = input_format == input_format_t::bjdata;
+        switch (type)
+        {
+            case 'U':
+                return parse_ubjson_typed_run<std::uint8_t>(remaining);
+            case 'i':
+                return parse_ubjson_typed_run<std::int8_t>(remaining);
+            case 'I':
+                return parse_ubjson_typed_run<std::int16_t>(remaining);
+            case 'l':
+                return parse_ubjson_typed_run<std::int32_t>(remaining);
+            case 'L':
+                return parse_ubjson_typed_run<std::int64_t>(remaining);
+            case 'u':
+                return !bjdata || parse_ubjson_typed_run<std::uint16_t>(remaining);
+            case 'm':
+                return !bjdata || parse_ubjson_typed_run<std::uint32_t>(remaining);
+            case 'M':
+                return !bjdata || parse_ubjson_typed_run<std::uint64_t>(remaining);
+            case 'd':
+                return parse_ubjson_typed_run<float>(remaining);
+            case 'D':
+                return parse_ubjson_typed_run<double>(remaining);
+            default:
+                return true;
+        }
+    }
+
+    /// input that is not contiguous: every element is read by get_ubjson_value
+    bool parse_ubjson_typed_run(std::size_t& /*remaining*/, const char_int_type /*type*/, std::false_type /*bulk*/) const noexcept
+    {
+        return true;
+    }
+
+    template<typename NumberType>
+    bool parse_ubjson_typed_run(std::size_t& remaining)
+    {
+        constexpr std::size_t size = sizeof(NumberType);
+        const std::size_t count = (std::min)(remaining, ia.bulk_remaining() / size);
+        if (count == 0)
+        {
+            return true;
+        }
+        const auto* const data = reinterpret_cast<const unsigned char*>(ia.bulk_data());
+        // UBJSON stores numbers big-endian, BJData little-endian
+        const bool swap = is_little_endian != (input_format == input_format_t::bjdata);
+        std::size_t read = 0;
+        bool accepted = true;
+        while (read < count && accepted)
+        {
+            NumberType number{};
+            std::memcpy(&number, data + (read * size), size);
+            if (swap)
+            {
+                byte_swap(number);
+            }
+            ++read;
+            accepted = emit_ubjson_number(number);
+        }
+        // as if read by get_number(): current is the last byte read
+        ia.bulk_skip(read * size);
+        chars_read += read * size;
+        current = data[(read * size) - 1];
+        remaining -= read;
+        return accepted;
+    }
+
+    template<typename NumberType, enable_if_t<std::is_floating_point<NumberType>::value, int> = 0>
+    bool emit_ubjson_number(const NumberType number)
+    {
+        return emit_float(number);
+    }
+
+    template < typename NumberType, enable_if_t < std::is_integral<NumberType>::value&& std::is_signed<NumberType>::value, int > = 0 >
+    bool emit_ubjson_number(const NumberType number)
+    {
+        return emit_signed(number);
+    }
+
+    template < typename NumberType, enable_if_t < std::is_integral<NumberType>::value&& !std::is_signed<NumberType>::value, int > = 0 >
+    bool emit_ubjson_number(const NumberType number)
+    {
+        return emit_unsigned(number);
+    }
+
     /*!
     @return whether array creation completed
     */
@@ -3290,7 +3727,15 @@ class binary_reader
                 return false;
             }
 
-            for (std::size_t i = 0; i < size_and_type.first; ++i)
+            // the numbers that are in the input, in one loop; the rest (if
+            // the input ends early) one by one below
+            std::size_t remaining = size_and_type.first;
+            if (!nd_is_char && JSON_HEDLEY_UNLIKELY(!parse_ubjson_typed_run(remaining, size_and_type.second, std::integral_constant<bool, bulk_scan> {})))
+            {
+                return false;
+            }
+
+            for (std::size_t i = size_and_type.first - remaining; i < size_and_type.first; ++i)
             {
                 if (nd_is_char)
                 {
@@ -3350,7 +3795,8 @@ class binary_reader
                 container_stack.back().remaining = 0;
             }
 
-            return true;
+            return size_and_type.second == 0
+                   || parse_ubjson_typed_run(container_stack.back().remaining, size_and_type.second, std::integral_constant<bool, bulk_scan> {});
         }
 
         return enter_array(detail::unknown_size());
@@ -3691,13 +4137,13 @@ class binary_reader
                 return sax->null();
 
             case 0xFB:
-                return sax->number_float(static_cast<number_float_t>(-1.0), "");
+                return sax->number_float(static_cast<number_float_t>(-1.0), no_source);
 
             case 0xFC:
-                return sax->number_float(static_cast<number_float_t>(0.0), "");
+                return sax->number_float(static_cast<number_float_t>(0.0), no_source);
 
             case 0xFD:
-                return sax->number_float(static_cast<number_float_t>(1.0), "");
+                return sax->number_float(static_cast<number_float_t>(1.0), no_source);
 
             case 0xFF: // empty string
             {
@@ -4020,7 +4466,12 @@ class binary_reader
     `char_traits<char_type>::eof()` in that case.
 
     @return character read from the input
+
+    @note always inlined: GCC otherwise stops inlining the stream adapter's
+          get_character() into parse_cbor_internal once that function grows
+          (+0.45 % instructions for CBOR from a std::istringstream with GCC 13)
     */
+    JSON_HEDLEY_ALWAYS_INLINE
     char_int_type get()
     {
         ++chars_read;
@@ -4066,6 +4517,27 @@ class binary_reader
         return current;
     }
 
+    /// reverse the byte order of a double with a single byteswap(): GCC does
+    /// not merge the byte-wise swap of the generic version into one
+    static void byte_swap(double& number) noexcept
+    {
+        static_assert(sizeof(double) == sizeof(std::uint64_t), "double must have 64 bits");
+        std::uint64_t bits{};
+        std::memcpy(&bits, &number, sizeof(bits));
+        bits = byteswap(bits);
+        std::memcpy(&number, &bits, sizeof(bits));
+    }
+
+    /// reverse the byte order of a float with a single byteswap()
+    static void byte_swap(float& number) noexcept
+    {
+        static_assert(sizeof(float) == sizeof(std::uint32_t), "float must have 32 bits");
+        std::uint32_t bits{};
+        std::memcpy(&bits, &number, sizeof(bits));
+        bits = byteswap(bits);
+        std::memcpy(&number, &bits, sizeof(bits));
+    }
+
     template<class NumberType>
     static void byte_swap(NumberType& number)
     {
@@ -4201,7 +4673,7 @@ class binary_reader
         {
             return out_of_range_error(exception_id::number_overflow, "number overflow", "value");
         }
-        return sax->number_float(result, "");
+        return sax->number_float(result, no_source);
     }
 
     /*!
@@ -4261,7 +4733,7 @@ class binary_reader
         }();
         return sax->number_float((half & 0x8000u) != 0
                                  ? static_cast<number_float_t>(-val)
-                                 : static_cast<number_float_t>(val), "");
+                                 : static_cast<number_float_t>(val), no_source);
     }
 
     /*!
@@ -4293,6 +4765,19 @@ class binary_reader
         return get_bytes(len, "string", result);
     }
 
+    /// whether @a s is valid UTF-8: ASCII eight bytes at a time, the rest
+    /// sequence by sequence (as the binary writers check strings)
+    static bool is_valid_utf8_string(const string_t& s, std::true_type /*is_byte*/) noexcept
+    {
+        return valid_utf8_string(reinterpret_cast<const unsigned char*>(s.data()), s.size());
+    }
+
+    /// whether @a s, of a character type wider than a byte, is valid UTF-8
+    static bool is_valid_utf8_string(const string_t& s, std::false_type /*is_byte*/) noexcept
+    {
+        return is_valid_utf8(s);
+    }
+
     /*!
     @brief validate a decoded text string (value or object key) against @ref error_handler
 
@@ -4312,7 +4797,16 @@ class binary_reader
     */
     bool check_string_utf8(string_t& result, const char* context)
     {
-        if (error_handler == error_handler_t::keep || is_valid_utf8(result))
+        return error_handler == error_handler_t::keep || check_string_utf8_handler(result, context);
+    }
+
+    /// @ref check_string_utf8 for an error handler other than @ref
+    /// error_handler_t::keep; out of line, so that reading strings without a
+    /// check does not pay for the code of the check
+    JSON_HEDLEY_NEVER_INLINE
+    bool check_string_utf8_handler(string_t& result, const char* context)
+    {
+        if (is_valid_utf8_string(result, std::integral_constant<bool, sizeof(typename string_t::value_type) == 1>()))
         {
             return true;
         }
@@ -4586,6 +5080,10 @@ class binary_reader
     /// the SAX parser
     json_sax_t* sax = nullptr;
 
+    /// the (empty) source text of every number_float event: binary formats
+    /// have none, and a string_t built for each float would cost more
+    const string_t no_source{};
+
     /// the containers that have been opened and not closed yet; see @ref container_frame
     std::vector<container_frame> container_stack{};
 

include/nlohmann/detail/input/input_adapters.hpp

@@ -545,12 +545,9 @@ class input_stream_adapter
     std::char_traits<char>::int_type get_character_slow()
     {
 #if !JSON_DISABLE_STREAM_BULK_SCAN
-        // sbumpc() refills the get area if it is exhausted
-        const bool refill = streambuf_access::get_ptr(sb) == streambuf_access::get_end(sb);
-        if (JSON_HEDLEY_UNLIKELY(refill))
-        {
-            save_token_segment();
-        }
+        // the get area is exhausted (get_character() handles the other case),
+        // so sbumpc() refills it
+        save_token_segment();
 #endif
 
         auto res = sb->sbumpc();
@@ -563,17 +560,13 @@ class input_stream_adapter
             is->clear(is->rdstate() | std::ios::eofbit);
         }
 #if !JSON_DISABLE_STREAM_BULK_SCAN
-        else if (JSON_HEDLEY_UNLIKELY(refill))
+        else
         {
             // the consumed character is at gptr() - 1, unless the streambuf
             // has no get area and returned it from uflow()
             const char* const next = streambuf_access::get_ptr(sb);
             after_refill(res, next != nullptr && next != streambuf_access::get_begin(sb));
         }
-        else
-        {
-            current_in_get_area = true;
-        }
 #endif
         return res;
     }

include/nlohmann/detail/input/json_sax.hpp

@@ -999,7 +999,7 @@ class json_sax_dom_parser : public json_sax_dom_error_state
         ordered_data.members[f.ordered.dest_member].second = std::move(value);
     }
 
-    static void place_member(const frame& /*f*/, BasicJsonType&& /*value*/, std::false_type /*indexed*/) noexcept {}
+    static void place_member(const frame& /*f*/, BasicJsonType&& /*value*/, std::false_type /*indexed*/) noexcept {} // LCOV_EXCL_LINE
 
     /// store the members of a new object directly in it
     bool start_stored_object(std::size_t len)
@@ -1303,7 +1303,7 @@ class json_sax_dom_parser : public json_sax_dom_error_state
         {
             // a new member is null and holds nothing: construct the value
             // over it instead of destroying and swapping
-            ::new (static_cast<void*>(&member)) BasicJsonType(std::forward<Value>(v));
+            construct_member(member, std::forward<Value>(v), std::is_nothrow_constructible<BasicJsonType, Value> {});
         }
         else
         {
@@ -1312,6 +1312,26 @@ class json_sax_dom_parser : public json_sax_dom_error_state
         }
     }
 
+    /// constructing the value cannot throw (for example a number or a boolean): construct it in place
+    template<typename Value>
+    JSON_HEDLEY_ALWAYS_INLINE
+    static void construct_member(BasicJsonType& member, Value&& v, std::true_type /*nothrow*/)
+    {
+        ::new (static_cast<void*>(&member)) BasicJsonType(std::forward<Value>(v));
+    }
+
+    /// constructing the value can throw (for example a container or a string), and a
+    /// constructor that was interrupted must not have touched the member (#5985):
+    /// create the value first, then move it over the member (the move constructor is
+    /// noexcept)
+    template<typename Value>
+    JSON_HEDLEY_ALWAYS_INLINE
+    static void construct_member(BasicJsonType& member, Value&& v, std::false_type /*may throw*/)
+    {
+        BasicJsonType value(std::forward<Value>(v));
+        ::new (static_cast<void*>(&member)) BasicJsonType(std::move(value));
+    }
+
     /// a custom base class may care about the lifetime of the value
     template<typename Value>
     static void set_member(BasicJsonType& member, Value&& v, std::false_type /*custom base*/)
@@ -1737,7 +1757,7 @@ class json_sax_dom_callback_parser : public json_sax_dom_error_state
         key_stack.push_back(val);
 
         // add discarded value at the given key and store the reference for later
-        if (keep && ref_stack.back())
+        if (keep)
         {
             auto& obj = *ref_stack.back()->m_data.m_value.object;
             // a single lookup: insert the placeholder, or find the existing member
@@ -1794,7 +1814,7 @@ class json_sax_dom_callback_parser : public json_sax_dom_error_state
 
         const string_t object_key = pop_container();
 
-        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        if (!ref_stack.empty() && ref_stack.back())
         {
             // remove discarded value
             remove_discarded_value(*ref_stack.back(), object_key);
@@ -1960,8 +1980,7 @@ class json_sax_dom_callback_parser : public json_sax_dom_error_state
     */
     string_t current_key() const
     {
-        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_object()
-                && !key_stack.empty())
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_object())
         {
             return key_stack.back();
         }

include/nlohmann/detail/input/lexer.hpp

@@ -209,8 +209,13 @@ constexpr bool input_adapter_bulk_window(std::false_type /*detected*/)
 @brief lexical analysis
 
 This class organizes the lexical analysis during JSON deserialization.
+
+DiscardValues: the caller only needs the token types and never looks at the values of number and string tokens (only
+accept(), which parses through json_sax_acceptor). A template parameter rather than a member, so that the lexer of
+parse() is compiled without the paths of accept(): with both string scans in one scan(), parse() was up to 2 % slower
+on Apple M1.
 */
-template<typename BasicJsonType, typename InputAdapterType>
+template<typename BasicJsonType, typename InputAdapterType, bool DiscardValues = false>
 class lexer : public lexer_base<BasicJsonType>
 {
     using number_integer_t = typename BasicJsonType::number_integer_t;
@@ -268,10 +273,9 @@ class lexer : public lexer_base<BasicJsonType>
   public:
     using token_type = typename lexer_base<BasicJsonType>::token_type;
 
-    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false, bool discard_number_values_ = false) noexcept
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
         : ia(std::move(adapter))
         , ignore_comments(ignore_comments_)
-        , discard_number_values(discard_number_values_)
     {
         // the token string of an error before the first token is everything
         // read so far
@@ -296,14 +300,16 @@ class lexer : public lexer_base<BasicJsonType>
     /// calls would (including the position and token bookkeeping of a
     /// streaming adapter, see bulk_consume) and leaves @a current holding the last of
     /// the 4 digits, just as the last such get() would; the codepoint is
-    /// written to @a out. Makes no state change and returns false for a
-    /// pending unget, fewer than 4 remaining bytes, or any of the 4 bytes not
-    /// being a hex digit, so the caller falls back unchanged to the
-    /// per-character loop, which then reports the same diagnostic (stopping
-    /// at the first invalid digit) as before this optimization.
+    /// written to @a out. Makes no state change and returns false for fewer
+    /// than 4 remaining bytes or any of the 4 bytes not being a hex digit, so
+    /// the caller falls back unchanged to the per-character loop, which then
+    /// reports the same diagnostic (stopping at the first invalid digit) as
+    /// before this optimization.
     bool get_codepoint_bulk(std::true_type /*bulk*/, int& out)
     {
-        if (next_unget || ia.bulk_remaining() < 4)
+        // no unget is pending inside a string (see get_after_string_run())
+        JSON_ASSERT(!next_unget);
+        if (ia.bulk_remaining() < 4)
         {
             return false;
         }
@@ -388,6 +394,8 @@ class lexer : public lexer_base<BasicJsonType>
     checks if it is inside the range. If a violation was detected, set up an
     error message and return false. Otherwise, return true.
 
+    @param[in] keep    whether the bytes are added to token_buffer (false for
+                       accept(), see scan())
     @param[in] ranges  list of integers; interpreted as list of pairs of
                        inclusive lower and upper bound, respectively
 
@@ -396,17 +404,18 @@ class lexer : public lexer_base<BasicJsonType>
 
     @return true if and only if no range violation was detected
     */
-    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    template<bool Keep>
+    bool next_byte_in_range(std::integral_constant<bool, Keep> keep, std::initializer_list<char_int_type> ranges)
     {
         JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
-        add(current);
+        add_string_char(keep, current);
 
         for (auto range = ranges.begin(); range != ranges.end(); ++range)
         {
             get();
             if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range))) // NOLINT(bugprone-inc-dec-in-conditions)
             {
-                add(current);
+                add_string_char(keep, current);
             }
             else
             {
@@ -419,20 +428,21 @@ class lexer : public lexer_base<BasicJsonType>
     }
 
     /// contiguous input: bulk-append the run of ordinary characters and complete
-    /// well-formed UTF-8 sequences starting at the current read position, then
+    /// well-formed UTF-8 sequences starting at the current read position (only
+    /// skip it if @a keep is false), then
     /// read the first byte that needs individual handling (the closing quote, an
     /// escape, a control character, or an ill-formed UTF-8 byte) like get().
     /// That byte is taken from the buffer that was just scanned. Through get(),
     /// Apple Clang merged this read with the other get() calls of the scan
     /// function, which load the read position again right after it was stored
     /// (3% of json::accept() on jeopardy.json on Apple M1).
-    char_int_type get_after_string_run(std::true_type /*bulk*/)
+    template<bool Keep>
+    char_int_type get_after_string_run(std::true_type /*bulk*/, std::integral_constant<bool, Keep> keep)
     {
-        // a pending unget must be consumed through the normal path first
-        if (next_unget)
-        {
-            return get();
-        }
+        // scan_string() is entered from scan_after_whitespace(), whose current
+        // was read by skip_whitespace() (its first get() clears a pending
+        // unget), and nothing in scan_string() calls unget()
+        JSON_ASSERT(!next_unget);
         const std::size_t remaining = ia.bulk_remaining();
         if (remaining == 0)
         {
@@ -444,7 +454,7 @@ class lexer : public lexer_base<BasicJsonType>
         const std::size_t pos = lexer_string_bulk_run(data, remaining);
         if (pos != 0)
         {
-            token_buffer.append(reinterpret_cast<const typename string_t::value_type*>(data), pos);
+            append_string_run(keep, data, pos);
             bulk_consume(reinterpret_cast<const char*>(data), pos);
         }
         if (pos == remaining)
@@ -488,7 +498,8 @@ class lexer : public lexer_base<BasicJsonType>
     }
 
     /// streaming input: no bulk fast path
-    char_int_type get_after_string_run(std::false_type /*bulk*/)
+    template<bool Keep>
+    char_int_type get_after_string_run(std::false_type /*bulk*/, std::integral_constant<bool, Keep> /*keep*/)
     {
         return get();
     }
@@ -502,13 +513,18 @@ class lexer : public lexer_base<BasicJsonType>
     may contain \0 bytes), and token_buffer.size() is the number of bytes in the
     string.
 
+    @param[in] keep  whether the string is copied into token_buffer; if false
+                     (accept(), see scan()), it is only checked, with the same
+                     errors, and token_buffer stays empty
+
     @return token_type::value_string if string could be successfully scanned,
             token_type::parse_error otherwise
 
     @note In case of errors, variable error_message contains a textual
           description.
     */
-    token_type scan_string()
+    template<bool Keep>
+    token_type scan_string(std::integral_constant<bool, Keep> keep)
     {
         // reset token_buffer (ignore opening quote)
         reset();
@@ -520,7 +536,7 @@ class lexer : public lexer_base<BasicJsonType>
         {
             // bulk-consume ordinary characters from contiguous input, then
             // get the next character, the one that ends the run
-            switch (get_after_string_run(std::integral_constant<bool, bulk_scan>()))
+            switch (get_after_string_run(std::integral_constant<bool, bulk_scan>(), keep))
             {
                 // end of file while parsing the string
                 case char_traits<char_type>::eof():
@@ -542,35 +558,35 @@ class lexer : public lexer_base<BasicJsonType>
                     {
                         // quotation mark
                         case '\"':
-                            add('\"');
+                            add_string_char(keep, '\"');
                             break;
                         // reverse solidus
                         case '\\':
-                            add('\\');
+                            add_string_char(keep, '\\');
                             break;
                         // solidus
                         case '/':
-                            add('/');
+                            add_string_char(keep, '/');
                             break;
                         // backspace
                         case 'b':
-                            add('\b');
+                            add_string_char(keep, '\b');
                             break;
                         // form feed
                         case 'f':
-                            add('\f');
+                            add_string_char(keep, '\f');
                             break;
                         // line feed
                         case 'n':
-                            add('\n');
+                            add_string_char(keep, '\n');
                             break;
                         // carriage return
                         case 'r':
-                            add('\r');
+                            add_string_char(keep, '\r');
                             break;
                         // tab
                         case 't':
-                            add('\t');
+                            add_string_char(keep, '\t');
                             break;
 
                         // unicode escapes
@@ -638,10 +654,7 @@ class lexer : public lexer_base<BasicJsonType>
                             JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
 
                             // translate codepoint into bytes
-                            encode_utf8(static_cast<std::uint32_t>(codepoint), [this](std::uint32_t byte)
-                            {
-                                add(static_cast<char_int_type>(byte));
-                            });
+                            add_codepoint(keep, codepoint);
 
                             break;
                         }
@@ -824,7 +837,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0x7E:
                 case 0x7F:
                 {
-                    add(current);
+                    add_string_char(keep, current);
                     break;
                 }
 
@@ -860,7 +873,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xDE:
                 case 0xDF:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range(keep, {0x80, 0xBF})))
                     {
                         return token_type::parse_error;
                     }
@@ -870,7 +883,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
                 case 0xE0:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0xA0, 0xBF, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -894,7 +907,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xEE:
                 case 0xEF:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0x80, 0xBF, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -904,7 +917,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+D000..U+D7FF: bytes ED 80..9F 80..BF
                 case 0xED:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0x80, 0x9F, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -914,7 +927,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
                 case 0xF0:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -926,7 +939,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xF2:
                 case 0xF3:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -936,7 +949,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
                 case 0xF4:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range(keep, {0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
                     {
                         return token_type::parse_error;
                     }
@@ -1398,7 +1411,7 @@ scan_number_done:
                 return token_type::value_unsigned;
             }
         }
-        else if (number_type == token_type::value_integer)
+        else // value_integer (the callers handle value_float themselves)
         {
             if (parse_integer_signed(first, last, value_integer))
             {
@@ -1427,7 +1440,7 @@ scan_number_done:
     token_type convert_number(token_type number_type, std::size_t mantissa_end)
     {
         // accept() only needs to know whether the input is valid, so it sets
-        // discard_number_values (see json.hpp), and an integer token whose
+        // discard_values (see json.hpp), and an integer token whose
         // digit count shows that it fits is reported without calling
         // convert_integer(). A number with up to 18 digits always fits into
         // both std::uint64_t and std::int64_t (18 nines is about 1e18, below
@@ -1442,7 +1455,7 @@ scan_number_done:
         // json_sax_acceptor, whose number callbacks discard their argument and
         // return true, and the parser rejects neither integers nor finite
         // floats. value_unsigned/value_integer are left unset here, so a caller
-        // that reads the converted value must not set discard_number_values.
+        // that reads the converted value must not set discard_values.
         //
         // On contiguous input, scan_number_bulk_contiguous() converts integer
         // tokens itself and does not pass them to this function, unless
@@ -1450,7 +1463,7 @@ scan_number_done:
         // reached for input without bulk access (e.g. streams), with
         // JSON_DIAGNOSTIC_POSITIONS, or when scan_number_bulk_contiguous()
         // falls back to scan_number().
-        if (discard_number_values)
+        if (discard_values())
         {
             constexpr std::size_t safe_digit_count = 18;
             if (number_type == token_type::value_unsigned && token_buffer.size() <= safe_digit_count)
@@ -1504,11 +1517,9 @@ scan_number_done:
     */
     token_type scan_number_bulk_contiguous()
     {
-        // a pending unget offsets the buffer position from current; fall back
-        if (next_unget)
-        {
-            return token_type::uninitialized;
-        }
+        // called right after scan_after_whitespace() read current (see
+        // get_after_string_run()), so no unget is pending
+        JSON_ASSERT(!next_unget);
         const std::size_t rem = ia.bulk_remaining();
         if (rem == 0)
         {
@@ -1529,11 +1540,7 @@ scan_number_done:
         if (data[0] == '-')
         {
             number_type = token_type::value_integer;
-            i = 1;
-            if (i >= avail)
-            {
-                return token_type::uninitialized;
-            }
+            i = 1; // avail >= 2: rem == 0 returned above
         }
         const std::size_t integer_begin = i;
         if (data[i] == '0')
@@ -1701,7 +1708,7 @@ scan_number_done:
         // w < 10^19, so a value below 10^max_exponent10 cannot overflow, and a
         // value that underflows is a finite number as well. Only a token that
         // may overflow has to be converted to find out.
-        if (JSON_HEDLEY_UNLIKELY(discard_number_values && s.exponent + 19 <= std::numeric_limits<number_float_t>::max_exponent10))
+        if (JSON_HEDLEY_UNLIKELY(discard_values() && s.exponent + 19 <= std::numeric_limits<number_float_t>::max_exponent10))
         {
             value_float = 0;
             return true;
@@ -1775,7 +1782,10 @@ scan_number_done:
     /// the error at the right character
     JSON_HEDLEY_ALWAYS_INLINE bool scan_literal_bulk(const char* rest, const std::size_t length, std::true_type /*bulk*/)
     {
-        if (next_unget || ia.bulk_remaining() < length
+        // called right after scan_after_whitespace() read current (see
+        // get_after_string_run()), so no unget is pending
+        JSON_ASSERT(!next_unget);
+        if (ia.bulk_remaining() < length
                 || std::memcmp(ia.bulk_data(), rest, length) != 0)
         {
             return false;
@@ -2033,6 +2043,34 @@ scan_number_done:
         token_buffer.push_back(static_cast<typename string_t::value_type>(c));
     }
 
+    /// add a character of a string token; accept() checks the string but does
+    /// not keep its value (@a keep is false)
+    void add_string_char(std::true_type /*keep*/, char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+    static void add_string_char(std::false_type /*keep*/, char_int_type /*c*/) noexcept {}
+
+    /// add the UTF-8 bytes of a code point from a \\u escape to a string token
+    void add_codepoint(std::true_type /*keep*/, int codepoint)
+    {
+        encode_utf8(static_cast<std::uint32_t>(codepoint), [this](std::uint32_t byte)
+        {
+            add(static_cast<char_int_type>(byte));
+        });
+    }
+
+    static void add_codepoint(std::false_type /*keep*/, int /*codepoint*/) noexcept {}
+
+    /// append a run of ordinary string characters (see get_after_string_run())
+    void append_string_run(std::true_type /*keep*/, const unsigned char* data, std::size_t n)
+    {
+        token_buffer.append(reinterpret_cast<const typename string_t::value_type*>(data), n);
+    }
+
+    static void append_string_run(std::false_type /*keep*/, const unsigned char* /*data*/, std::size_t /*n*/) noexcept {}
+
   public:
     /////////////////////
     // value getters
@@ -2427,7 +2465,9 @@ scan_number_done:
 
             // string
             case '\"':
-                return scan_string();
+                // accept() (DiscardValues) checks strings without copying them
+                // into token_buffer
+                return scan_string(keep_strings {});
 
             // number
             case '-':
@@ -2512,11 +2552,19 @@ scan_number_done:
     std::size_t decimal_point_position = std::string::npos;
 
     /// whether the caller only needs the token types and never looks at the
-    /// converted numeric values; set only by accept(), which parses through
-    /// json_sax_acceptor. When set, convert_number() skips converting integer
-    /// tokens whose digit count guarantees that they fit into 64 bits (see
-    /// there)
-    const bool discard_number_values = false;
+    /// values of number and string tokens; DiscardValues, set only by accept(), which parses
+    /// through json_sax_acceptor. When set, convert_number() skips converting
+    /// integer tokens whose digit count guarantees that they fit into 64 bits
+    /// (see there), floats are converted only when they may overflow (see
+    /// convert_accumulated_float()), and strings are checked without being
+    /// copied into token_buffer (see scan())
+    static bool discard_values() noexcept
+    {
+        return DiscardValues;
+    }
+
+    /// the tag of scan_string(): whether string tokens are kept
+    using keep_strings = typename std::conditional<DiscardValues, std::false_type, std::true_type>::type;
 };
 
 }  // namespace detail

include/nlohmann/detail/input/parser.hpp

@@ -72,14 +72,14 @@ This class implements a parser for JSON text. Nested arrays and objects are trac
 stack instead of recursion, so deeply nested input does not exhaust the call stack, and what is read
 is reported as SAX events.
 */
-template<typename BasicJsonType, typename InputAdapterType>
+template<typename BasicJsonType, typename InputAdapterType, bool DiscardValues = false>
 class parser
 {
     using number_integer_t = typename BasicJsonType::number_integer_t;
     using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
     using number_float_t = typename BasicJsonType::number_float_t;
     using string_t = typename BasicJsonType::string_t;
-    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType, DiscardValues>;
     using token_type = typename lexer_t::token_type;
 
   public:
@@ -88,10 +88,9 @@ class parser
                     parser_callback_t<BasicJsonType> cb = nullptr,
                     const bool allow_exceptions_ = true,
                     const bool ignore_comments = false,
-                    const bool ignore_trailing_commas_ = false,
-                    const bool discard_number_values_ = false)
+                    const bool ignore_trailing_commas_ = false)
         : callback(std::move(cb))
-        , m_lexer(std::move(adapter), ignore_comments, discard_number_values_)
+        , m_lexer(std::move(adapter), ignore_comments)
         , allow_exceptions(allow_exceptions_)
         , ignore_trailing_commas(ignore_trailing_commas_)
     {
@@ -574,14 +573,7 @@ class parser
 
     std::string exception_message(const token_type expected, const std::string& context)
     {
-        std::string error_msg = "syntax error ";
-
-        if (!context.empty())
-        {
-            error_msg += concat("while parsing ", context, ' ');
-        }
-
-        error_msg += "- ";
+        std::string error_msg = concat("syntax error while parsing ", context, " - ");
 
         if (last_token == token_type::parse_error)
         {
@@ -599,7 +591,7 @@ class parser
         }
 
         return error_msg;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
   private:
     /// callback function

include/nlohmann/detail/input/simd_scan.hpp

@@ -322,6 +322,78 @@ JSON_SCAN_SSSE3_TARGET JSON_HEDLEY_NEVER_INLINE inline bool vector_utf8_run(cons
     block_out = block;
     return false;
 }
+
+/*!
+@brief skip 16-byte blocks of well-formed UTF-8 at p (a character boundary)
+
+Like vector_utf8_run, but quotes, backslashes, and control characters are
+ordinary characters. Returns the start of the first block in which the check
+found an error (which may belong to a sequence begun in the block before) or
+where fewer than 16 bytes are left; a sequence may be cut at that point, so the
+caller resumes at its start, one sequence at a time.
+*/
+JSON_SCAN_SSSE3_TARGET JSON_HEDLEY_NEVER_INLINE inline const unsigned char* vector_utf8_valid_blocks(const unsigned char* block, const unsigned char* e) noexcept
+{
+    using lookup = utf8_lookup4<>;
+#if JSON_SCAN_NEON
+    const uint8x16_t t1h = vld1q_u8(lookup::byte_1_high.data());
+    const uint8x16_t t1l = vld1q_u8(lookup::byte_1_low.data());
+    const uint8x16_t t2h = vld1q_u8(lookup::byte_2_high.data());
+    uint8x16_t prev = vdupq_n_u8(0);
+    while (e - block >= 16)
+    {
+        const uint8x16_t in = vld1q_u8(block);
+        if (vmaxvq_u8(vorrq_u8(in, prev)) < 0x80)
+        {
+            // ASCII here, and no sequence from the block before to finish
+            prev = in;
+            block += 16;
+            continue;
+        }
+        const uint8x16_t prev1 = vextq_u8(prev, in, 15);
+        const uint8x16_t sc = vandq_u8(vandq_u8(vqtbl1q_u8(t1h, vshrq_n_u8(prev1, 4)), vqtbl1q_u8(t1l, vandq_u8(prev1, vdupq_n_u8(0x0F)))), vqtbl1q_u8(t2h, vshrq_n_u8(in, 4)));
+        const uint8x16_t must23 = vorrq_u8(vqsubq_u8(vextq_u8(prev, in, 14), vdupq_n_u8(0xE0 - 0x80)), vqsubq_u8(vextq_u8(prev, in, 13), vdupq_n_u8(0xF0 - 0x80)));
+        const uint8x16_t err = veorq_u8(vandq_u8(must23, vdupq_n_u8(0x80)), sc);
+        if (vmaxvq_u8(err) != 0)
+        {
+            break;
+        }
+        prev = in;
+        block += 16;
+    }
+#else
+    const __m128i t1h = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(lookup::byte_1_high.data()))); // NOLINT(bugprone-casting-through-void)
+    const __m128i t1l = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(lookup::byte_1_low.data()))); // NOLINT(bugprone-casting-through-void)
+    const __m128i t2h = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(lookup::byte_2_high.data()))); // NOLINT(bugprone-casting-through-void)
+    const __m128i nibble = _mm_set1_epi8(0x0F);
+    const __m128i zero = _mm_setzero_si128();
+    __m128i prev = zero;
+    while (e - block >= 16)
+    {
+        const __m128i in = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(block))); // NOLINT(bugprone-casting-through-void)
+        if (_mm_movemask_epi8(_mm_or_si128(in, prev)) == 0)
+        {
+            prev = in;
+            block += 16;
+            continue;
+        }
+        const __m128i prev1 = _mm_alignr_epi8(in, prev, 15);
+        const __m128i sc = _mm_and_si128(_mm_and_si128(_mm_shuffle_epi8(t1h, _mm_and_si128(_mm_srli_epi16(prev1, 4), nibble)),
+                                         _mm_shuffle_epi8(t1l, _mm_and_si128(prev1, nibble))),
+                                         _mm_shuffle_epi8(t2h, _mm_and_si128(_mm_srli_epi16(in, 4), nibble)));
+        const __m128i must23 = _mm_or_si128(_mm_subs_epu8(_mm_alignr_epi8(in, prev, 14), _mm_set1_epi8(0xE0 - 0x80)),
+                                            _mm_subs_epu8(_mm_alignr_epi8(in, prev, 13), _mm_set1_epi8(0xF0 - 0x80)));
+        const __m128i err = _mm_xor_si128(_mm_and_si128(must23, _mm_set1_epi8(static_cast<char>(-128))), sc);
+        if (_mm_movemask_epi8(_mm_cmpeq_epi8(err, zero)) != 0xFFFF)
+        {
+            break;
+        }
+        prev = in;
+        block += 16;
+    }
+#endif
+    return block;
+}
 #endif
 
 }  // namespace detail

include/nlohmann/detail/input/string_scan.hpp

@@ -90,6 +90,34 @@ JSON_HEDLEY_ALWAYS_INLINE std::size_t find_string_special(const unsigned char* d
     return n;
 }
 
+// return the index of the first 0x00 byte in [data, data+n), or n if there is
+// none; scans 8 bytes at a time (BSON's C-style strings)
+JSON_HEDLEY_ALWAYS_INLINE std::size_t find_zero_byte(const unsigned char* data, std::size_t n) noexcept
+{
+    constexpr std::uint64_t ones = 0x0101010101010101ull;
+    constexpr std::uint64_t high = 0x8080808080808080ull;
+    std::size_t i = 0;
+    for (; i + 8 <= n; i += 8)
+    {
+        const std::uint64_t v = read_eight_bytes(data + i);
+        const std::uint64_t zero = (v - ones) & ~v & high;
+        if (zero != 0)
+        {
+            // the lowest flagged byte is the first zero byte (see
+            // find_string_special())
+            return i + (static_cast<std::size_t>(count_trailing_zeros(zero)) / 8);
+        }
+    }
+    for (; i < n; ++i)
+    {
+        if (data[i] == 0x00)
+        {
+            return i;
+        }
+    }
+    return n;
+}
+
 // classify a byte as one the serializer must NOT copy verbatim when
 // ensure_ascii is requested: the closing quote, an escape, a control character
 // (< 0x20), DEL (0x7F), or any non-ASCII byte (>= 0x80). Everything else -
@@ -236,6 +264,64 @@ inline std::size_t valid_utf8_prefix(const unsigned char* data, std::size_t n) n
     return pos;
 }
 
+/*!
+@brief whether [data, data+n) is valid UTF-8, for checking whole strings
+
+The same answer as valid_utf8_prefix(data, n) == n. Short ASCII strings, the
+most common keys and values, are decided in one test, and long strings are
+checked 16 bytes at a time where the vector check is available.
+*/
+inline bool valid_utf8_string(const unsigned char* data, std::size_t n) noexcept
+{
+    constexpr std::uint64_t high = 0x8080808080808080ull;
+    if (n <= 16)
+    {
+        // two overlapping words cover 8 to 16 bytes, one partial word fewer
+        std::uint64_t first = 0;
+        std::uint64_t last = 0;
+        if (n >= 8)
+        {
+            std::memcpy(&first, data, sizeof(first));
+            std::memcpy(&last, data + n - 8, sizeof(last));
+        }
+        else if (n != 0)
+        {
+            std::memcpy(&first, data, n);
+        }
+        if (((first | last) & high) == 0)
+        {
+            return true;
+        }
+    }
+#if JSON_SCAN_VECTOR_UTF8
+    else if (n >= 32
+#if JSON_SCAN_SSSE3_DISPATCH
+             && cpu_has_ssse3()
+#endif
+            )
+    {
+        const unsigned char* block = vector_utf8_valid_blocks(data, data + n);
+        // the rest from the start of a sequence that may be cut at block
+        for (int i = 1; i <= 3 && block - i >= data; ++i)
+        {
+            const unsigned char c = block[-i];
+            if (c < 0x80)
+            {
+                break;
+            }
+            if (c >= 0xC0)
+            {
+                block -= i;
+                break;
+            }
+        }
+        const auto checked = static_cast<std::size_t>(block - data);
+        return checked + valid_utf8_prefix(block, n - checked) == n;
+    }
+#endif
+    return valid_utf8_prefix(data, n) == n;
+}
+
 #if JSON_SCAN_VECTOR_UTF8
 /// the end of scan_string_vector from block, where the vector loop stopped
 /// (ill-formed UTF-8, or fewer than 16 bytes left): one byte or sequence at a

include/nlohmann/detail/iterators/iter_impl.hpp

@@ -108,6 +108,9 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     {
         JSON_ASSERT(m_object != nullptr);
 
+        // m_it is already value-initialized, so this is not needed for
+        // correctness; it is kept because GCC generates faster loops with it
+        // (iterating a parsed document is 0.5-2.7 % slower without it, #6005)
         if (m_object->is_object())
         {
             m_it.object_iterator = typename object_t::iterator();

include/nlohmann/detail/json_pointer.hpp

@@ -304,7 +304,7 @@ class json_pointer
         result.reference_tokens.insert(result.reference_tokens.end(), lhs.reference_tokens.begin(), lhs.reference_tokens.end());
         result.reference_tokens.insert(result.reference_tokens.end(), rhs.reference_tokens.begin(), rhs.reference_tokens.end());
         return result;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
     /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
@@ -315,7 +315,7 @@ class json_pointer
         result.reference_tokens.insert(result.reference_tokens.end(), lhs.reference_tokens.begin(), lhs.reference_tokens.end());
         result.reference_tokens.push_back(std::move(token));
         return result;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
     /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
@@ -2180,7 +2180,7 @@ class json_pointer
                     {
                         // create an entry in the array
                         current = &current->operator[](array_index<BasicJsonType>(token));
-                        break;
+                        break; // LCOV_EXCL_LINE (needs an array index with 10 or more digits: more than 1e9 elements)
                     }
 
                     /*
@@ -2217,7 +2217,7 @@ class json_pointer
         json_pointer<string_t> result;
         result.reference_tokens = reference_tokens;
         return result;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
     json_pointer<string_t> convert()&&
     {

include/nlohmann/detail/macro_scope.hpp

@@ -347,7 +347,7 @@
             return ej_pair.second == j;                                                         \
         });                                                                                     \
         if (it != std::end(m)) e = it->first;                                                   \
-        else ::nlohmann::detail::templated_json_throw<nlohmann::detail::out_of_range>(nlohmann::detail::out_of_range::create(nlohmann::detail::exception_id::value_out_of_range, nlohmann::detail::concat("enum value out of range for " #ENUM_TYPE ": ", nlohmann::detail::from_json_dump(j)), nlohmann::detail::exception_context(j))); \
+        else ::nlohmann::detail::templated_json_throw<nlohmann::detail::out_of_range>(nlohmann::detail::out_of_range::create(nlohmann::detail::exception_id::value_out_of_range, nlohmann::detail::concat(nlohmann::detail::exception_prefix(j), "enum value out of range for " #ENUM_TYPE ": ", nlohmann::detail::from_json_dump(j)), nlohmann::detail::exception_context(j))); \
     }
 
 // Ugly macros to avoid uglier copy-paste when specializing basic_json. They

include/nlohmann/detail/output/binary_writer.hpp

@@ -833,7 +833,7 @@ class binary_writer
         while (n != 0);
         std::reverse(result.begin(), result.end());
         return result;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
     /*!
     @brief the decimal digits of the integer @a n, with a leading '-' if it
@@ -860,7 +860,7 @@ class binary_writer
         }
         std::reverse(result.begin(), result.end());
         return result;
-    }
+    } // LCOV_EXCL_LINE (exception cleanup only)
 
     /*!
     @brief throws because the integer @a j is too large for @a format
@@ -1792,7 +1792,7 @@ class binary_writer
         std::memcpy(out, &n, sizeof(NumberType));
         if (!is_little_endian)
         {
-            std::reverse(out, out + sizeof(NumberType));
+            std::reverse(out, out + sizeof(NumberType)); // LCOV_EXCL_LINE (big-endian hosts only)
         }
     }
 
@@ -1921,7 +1921,7 @@ class binary_writer
             const string_t& value = *j.m_data.m_value.string;
             if (JSON_HEDLEY_UNLIKELY(!value_in_range_of<std::int32_t>(value.size() + 1ul)))
             {
-                return false;
+                return false; // LCOV_EXCL_LINE (a string of 2 GiB or more)
             }
             out[0] = to_char_type(0x02);
             store_little_endian<std::int32_t>(p, static_cast<std::int32_t>(value.size() + 1ul));
@@ -2088,7 +2088,8 @@ class binary_writer
         /// arrays: the first index with one more digit; only maintained by
         /// @ref calc_bson_sizes
         std::uint64_t index_boundary = 10;
-        /// @ref calc_bson_sizes only: where its size goes in the table
+        /// @ref calc_bson_sizes: where its size goes in the table; @ref
+        /// write_bson_document_single_pass: the position of its size field
         std::size_t size_slot;
         /// @ref calc_bson_sizes only: the size of its entries seen so far
         std::size_t entries_size = 0;
@@ -2339,6 +2340,198 @@ class binary_writer
         }
     }
 
+    template<typename SinkType>
+    using sink_written_t = decltype(std::declval<const SinkType&>().written());
+
+    /// whether every integer fits the 64 bits BSON has, so that writing an
+    /// array of numbers needs no range check
+    static constexpr bool bson_integers_fit_64_bits =
+        std::numeric_limits<typename BasicJsonType::number_integer_t>::is_specialized
+        && std::numeric_limits<typename BasicJsonType::number_integer_t>::digits <= std::numeric_limits<std::int64_t>::digits
+        && std::numeric_limits<typename BasicJsonType::number_unsigned_t>::is_specialized
+        && std::numeric_limits<typename BasicJsonType::number_unsigned_t>::digits <= std::numeric_limits<std::uint64_t>::digits;
+
+    /*!
+    @brief whether BSON documents can be written in a single pass: the sink
+           can overwrite what it has written (output_vector_sink), and
+           @ref bson_integers_fit_64_bits
+    */
+    using bson_single_pass_sink = conjunction<is_detected<sink_written_t, OutputSinkType>, std::integral_constant<bool, bson_integers_fit_64_bits>>;
+
+    /// write a placeholder for the size of an object or array whose entries
+    /// follow; @return its position, for @ref close_bson_container
+    std::size_t write_bson_size_placeholder()
+    {
+        const std::size_t pos = oa.written();
+        // zero in any byte order
+        const std::array<CharType, sizeof(std::int32_t)> zero{};
+        oa.write_characters(zero.data(), zero.size());
+        return pos;
+    }
+
+    /// end the object or array whose size is at @a pos and write its size
+    /// there: everything from that field to the terminating null byte
+    /// @return false (and the size is not written) if it does not fit
+    bool close_bson_container(const std::size_t pos)
+    {
+        oa.write_character(to_char_type(0x00));
+        const std::size_t size = oa.written() - pos;
+        if (JSON_HEDLEY_UNLIKELY(!value_in_range_of<std::int32_t>(size)))
+        {
+            return false; // LCOV_EXCL_LINE (a document of 2 GiB or more)
+        }
+        const auto le_size = static_cast<std::uint32_t>(size);
+        oa.overwrite(pos, is_little_endian ? le_size : byteswap(le_size));
+        return true;
+    }
+
+    /*!
+    @brief check the value @a j of a BSON entry as @ref calc_bson_value_size
+           does, for @ref write_bson_document_single_pass
+    @return at least the size of the value
+    A number, boolean, or null needs no check there (its integers have at most
+    64 bits) and has at most 8 characters; a discarded value is rejected with
+    the same exception when it is written.
+    */
+    std::size_t check_bson_value(const BasicJsonType& j)
+    {
+        return (j.is_string() || j.is_binary()) ? calc_bson_value_size(j) : 8;
+    }
+
+    /// whether an entry of @a entry_size characters keeps the document that
+    /// begins at @a start, closed by @a open_containers null bytes, within
+    /// the 32-bit size of BSON
+    bool bson_entry_fits(const std::size_t start, const std::size_t entry_size, const std::size_t open_containers) const noexcept
+    {
+        const auto limit = static_cast<std::size_t>((std::numeric_limits<std::int32_t>::max)());
+        const std::size_t written = oa.written() - start;
+        return written <= limit && entry_size <= limit - written && open_containers <= limit - written - entry_size;
+    }
+
+    /*!
+    @brief Serializes the JSON object @a document as a BSON document in a
+           single pass, writing the size of each object and array once it is
+           complete
+
+    Checks every key and value as @ref calc_bson_sizes does, in the same
+    order, so the same exception is thrown; the output written up to then is
+    discarded with the vector it was written to.
+
+    @return false as soon as the document or a string, binary value, object,
+            or array in it would be larger than the 32-bit BSON sizes allow;
+            nothing large has been written then, and the caller writes the
+            document in two passes, which reports that error
+    */
+    bool write_bson_document_single_pass(const BasicJsonType& document)
+    {
+        const std::size_t start = oa.written();
+        // the object or array whose entries are being written (with the
+        // position of its size), and the ones it is in
+        bson_frame current(&document, write_bson_size_placeholder());
+        std::vector<bson_frame> parents;
+
+        while (true)
+        {
+            const BasicJsonType* nested = nullptr;
+            std::size_t nested_size_pos = 0;
+            if (current.value->is_object())
+            {
+                const auto& object = *current.value->m_data.m_value.object;
+                while (nested == nullptr && current.member != object.cend())
+                {
+                    const auto& el = *current.member;
+                    ++current.member;
+                    const std::size_t header_size = calc_bson_entry_header_size(el.first, el.second);
+                    const std::size_t value_size = el.second.is_structured() ? 0 : check_bson_value(el.second);
+                    if (JSON_HEDLEY_UNLIKELY(!bson_entry_fits(start, header_size + value_size, parents.size() + 1)))
+                    {
+                        return false;
+                    }
+                    if (el.second.is_structured())
+                    {
+                        write_bson_entry_header(el.first, el.second.is_object() ? 0x03 : 0x04);
+                        nested_size_pos = write_bson_size_placeholder();
+                        nested = &el.second;
+                    }
+                    else
+                    {
+                        write_bson_value(el.first, el.second);
+                    }
+                }
+            }
+            else
+            {
+                const auto& array = *current.value->m_data.m_value.array;
+                while (nested == nullptr && current.index < array.size())
+                {
+                    if (is_bson_fixed_size(array[current.index]))
+                    {
+                        write_bson_array_fixed_entries(current);
+                        if (current.index == array.size())
+                        {
+                            break;
+                        }
+                    }
+
+                    // a string, binary value, object or array
+                    const BasicJsonType& el = array[current.index];
+                    const string_t index_name(current.index_name.data(), current.index_name_size);
+                    current.next_index();
+                    const std::size_t value_size = el.is_structured() ? 0 : check_bson_value(el);
+                    if (JSON_HEDLEY_UNLIKELY(!bson_entry_fits(start, 2 + index_name.size() + value_size, parents.size() + 1)))
+                    {
+                        return false;
+                    }
+                    if (el.is_structured())
+                    {
+                        write_bson_entry_header(index_name, el.is_object() ? 0x03 : 0x04);
+                        nested_size_pos = write_bson_size_placeholder();
+                        nested = &el;
+                    }
+                    else
+                    {
+                        write_bson_value(index_name, el);
+                    }
+                }
+            }
+
+            if (nested != nullptr)
+            {
+                if (nested->is_array())
+                {
+                    // an array of booleans, numbers and null is written without a frame on the stack
+                    bson_frame leaf(nested, nested_size_pos);
+                    write_bson_array_fixed_entries(leaf);
+                    if (leaf.index == nested->m_data.m_value.array->size())
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!close_bson_container(nested_size_pos)))
+                        {
+                            return false; // LCOV_EXCL_LINE (a document of 2 GiB or more)
+                        }
+                        continue;
+                    }
+                    parents.push_back(std::move(current));
+                    current = std::move(leaf);
+                    continue;
+                }
+                parents.push_back(std::move(current));
+                current = bson_frame(nested, nested_size_pos);
+                continue;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!close_bson_container(current.size_slot)))
+            {
+                return false; // LCOV_EXCL_LINE (a document of 2 GiB or more)
+            }
+            if (parents.empty())
+            {
+                return true;
+            }
+            current = std::move(parents.back());
+            parents.pop_back();
+        }
+    }
+
     /*!
     @brief Serializes the JSON object @a document as a BSON document
 
@@ -2350,6 +2543,39 @@ class binary_writer
     @pre       document.type() == value_t::object
     */
     void write_bson_document(const BasicJsonType& document)
+    {
+        write_bson_document(document, bson_single_pass_sink());
+    }
+
+    /// the sink can overwrite: one pass, unless the error handler replaces or
+    /// drops ill-formed UTF-8, which changes the sizes the checks compute
+    void write_bson_document(const BasicJsonType& document, std::true_type /*single_pass*/)
+    {
+        const std::size_t start = oa.written();
+        if ((error_handler == error_handler_t::keep || error_handler == error_handler_t::strict)
+                && write_bson_document_single_pass(document))
+        {
+            return;
+        }
+        // a length does not fit: start over, so that it is reported as the
+        // two passes report it, before anything is written
+        oa.rewind(start);
+        write_bson_document_two_pass(document);
+    }
+
+    void write_bson_document(const BasicJsonType& document, std::false_type /*single_pass*/)
+    {
+        write_bson_document_two_pass(document);
+    }
+
+    /*!
+    @brief Serializes the JSON object @a document as a BSON document: the
+           sizes of all objects and arrays first, then the entries
+
+    @param[in] document  the JSON object to serialize
+    @pre       document.type() == value_t::object
+    */
+    void write_bson_document_two_pass(const BasicJsonType& document)
     {
         std::vector<std::size_t> nested_sizes;
         const std::size_t document_size = calc_bson_sizes(document, nested_sizes);
@@ -2552,10 +2778,10 @@ class binary_writer
 
     Selected through masks rather than branches, as the type and the sign of
     the values in an array of mixed signs alternate unpredictably (non-negative
-    integers are number_unsigned after parsing). Up to 64 bits, the sign is bit
-    63 of the result (a narrower integer is sign-extended); computing it with
-    masks keeps GCC from branching on the type. A wider integer has to be
-    compared.
+    integers are number_unsigned after parsing). The sign is bit 63 of the
+    result (a narrower integer is sign-extended); computing it with masks keeps
+    GCC from branching on the type. Only called if @ref integers_fit_64_bits();
+    a wider number type is written with range checks on the whole value.
     */
     static std::uint64_t integer_bits(const BasicJsonType& j, std::uint64_t& sign_mask) noexcept
     {
@@ -2563,9 +2789,7 @@ class binary_writer
         const std::uint64_t raw = is_signed
                                   ? static_cast<std::uint64_t>(j.m_data.m_value.number_integer)
                                   : static_cast<std::uint64_t>(j.m_data.m_value.number_unsigned);
-        sign_mask = sizeof(typename BasicJsonType::number_integer_t) <= sizeof(std::uint64_t)
-                    ? (std::uint64_t{0} - static_cast<std::uint64_t>(is_signed)) & (std::uint64_t{0} - (raw >> 63u))
-                    : std::uint64_t{0} - static_cast<std::uint64_t>(is_signed && j.m_data.m_value.number_integer < 0);
+        sign_mask = (std::uint64_t{0} - static_cast<std::uint64_t>(is_signed)) & (std::uint64_t{0} - (raw >> 63u));
         return raw;
     }
 
@@ -3080,6 +3304,25 @@ class binary_writer
         }
     }
 
+    /// write the head and the characters of @a value, at most
+    /// max_text_in_reservation of them, in one reservation
+    JSON_HEDLEY_ALWAYS_INLINE void write_cbor_string_reserved(const string_t& value)
+    {
+        CharType* const out = oa.reserve(value.size() + 2);
+        CharType* p = out;
+        if (value.size() <= 0x17)
+        {
+            *p++ = to_char_type(static_cast<std::uint8_t>(0x60 + value.size()));
+        }
+        else
+        {
+            *p++ = to_char_type(0x78);
+            *p++ = to_char_type(static_cast<std::uint8_t>(value.size()));
+        }
+        copy_characters(p, reinterpret_cast<const CharType*>(value.data()), value.size());
+        oa.commit(static_cast<std::size_t>(p - out) + value.size());
+    }
+
     /*!
     @brief write a CBOR text string
 
@@ -3101,19 +3344,7 @@ class binary_writer
             // the string is written as it is: head and characters in one reservation
             if (JSON_HEDLEY_LIKELY(value.size() <= max_text_in_reservation))
             {
-                CharType* const out = oa.reserve(value.size() + 2);
-                CharType* p = out;
-                if (value.size() <= 0x17)
-                {
-                    *p++ = to_char_type(static_cast<std::uint8_t>(0x60 + value.size()));
-                }
-                else
-                {
-                    *p++ = to_char_type(0x78);
-                    *p++ = to_char_type(static_cast<std::uint8_t>(value.size()));
-                }
-                copy_characters(p, reinterpret_cast<const CharType*>(value.data()), value.size());
-                oa.commit(static_cast<std::size_t>(p - out) + value.size());
+                write_cbor_string_reserved(value);
                 return;
             }
         }
@@ -3127,6 +3358,13 @@ class binary_writer
     JSON_HEDLEY_NEVER_INLINE
     void write_cbor_checked_string(const string_t& value, const BasicJsonType& context)
     {
+        if (error_handler == error_handler_t::strict && value.size() <= max_text_in_reservation)
+        {
+            check_utf8(value, context);
+            write_cbor_string_reserved(value);
+            return;
+        }
+
         string_t storage;
         const string_t& sanitized = sanitize_utf8_for_write(value, context, storage);
 
@@ -3141,6 +3379,27 @@ class binary_writer
     // MsgPack //
     /////////////
 
+    /// write the head and the characters of @a value, at most
+    /// max_text_in_reservation of them, in one reservation
+    JSON_HEDLEY_ALWAYS_INLINE void write_msgpack_string_reserved(const string_t& value)
+    {
+        CharType* const out = oa.reserve(value.size() + 2);
+        CharType* p = out;
+        if (value.size() <= 31)
+        {
+            // fixstr
+            *p++ = to_char_type(static_cast<std::uint8_t>(0xA0 | value.size()));
+        }
+        else
+        {
+            // str 8
+            *p++ = to_char_type(0xD9);
+            *p++ = to_char_type(static_cast<std::uint8_t>(value.size()));
+        }
+        copy_characters(p, reinterpret_cast<const CharType*>(value.data()), value.size());
+        oa.commit(static_cast<std::size_t>(p - out) + value.size());
+    }
+
     /*!
     @brief write a MessagePack str
 
@@ -3158,21 +3417,7 @@ class binary_writer
             // the string is written as it is: head and characters in one reservation
             if (JSON_HEDLEY_LIKELY(value.size() <= max_text_in_reservation))
             {
-                CharType* const out = oa.reserve(value.size() + 2);
-                CharType* p = out;
-                if (value.size() <= 31)
-                {
-                    // fixstr
-                    *p++ = to_char_type(static_cast<std::uint8_t>(0xA0 | value.size()));
-                }
-                else
-                {
-                    // str 8
-                    *p++ = to_char_type(0xD9);
-                    *p++ = to_char_type(static_cast<std::uint8_t>(value.size()));
-                }
-                copy_characters(p, reinterpret_cast<const CharType*>(value.data()), value.size());
-                oa.commit(static_cast<std::size_t>(p - out) + value.size());
+                write_msgpack_string_reserved(value);
                 return;
             }
         }
@@ -3185,6 +3430,13 @@ class binary_writer
     JSON_HEDLEY_NEVER_INLINE
     void write_msgpack_checked_string(const string_t& value, const BasicJsonType& context)
     {
+        if (error_handler == error_handler_t::strict && value.size() <= max_text_in_reservation)
+        {
+            check_utf8(value, context);
+            write_msgpack_string_reserved(value);
+            return;
+        }
+
         string_t storage;
         const string_t& sanitized = sanitize_utf8_for_write(value, context, storage);
 
@@ -3904,57 +4156,34 @@ class binary_writer
     }
 
     /*!
-    @brief validate (dry_run) or write one BJData ND-array element of integer dtype @a T
-    @return whether @a el's value is in range of @a T; always true when @a dry_run is false
-    */
-    template<typename T>
-    bool write_bjdata_ndarray_element(const BasicJsonType& el, const bool dry_run)
-    {
-        if (dry_run)
-        {
-            return bjdata_ndarray_value_in_range<T>(el);
-        }
-        using storage_type = typename std::conditional<std::is_unsigned<T>::value, std::uint64_t, std::int64_t>::type;
-        write_number(static_cast<T>(el.template get<storage_type>()), true);
-        return true;
-    }
-
-    /*!
-    @brief validate (dry_run) or write one BJData ND-array element of dtype 'd' (single precision)
+    @brief whether the BJData ND-array element @a el can be written with dtype 'd' (single precision)
     @return whether @a el's value survives narrowing to float and back without any change
-            (so the ND-array round-trips exactly), or is infinite or NaN; always true when
-            @a dry_run is false
+            (so the ND-array round-trips exactly), or is infinite or NaN
     */
-    bool write_bjdata_ndarray_float_element(const BasicJsonType& el, const bool dry_run)
+    static bool bjdata_ndarray_float_in_range(const BasicJsonType& el) noexcept
     {
         const auto dval = static_cast<double>(el.m_data.m_value.number_float);
-        if (dry_run)
-        {
 #ifdef __GNUC__
-            JSON_HEDLEY_DIAGNOSTIC_PUSH
-            JSON_HEDLEY_PRAGMA(GCC diagnostic ignored "-Wfloat-equal")
+        JSON_HEDLEY_DIAGNOSTIC_PUSH
+        JSON_HEDLEY_PRAGMA(GCC diagnostic ignored "-Wfloat-equal")
 #endif
-            // a value that would be rounded (rather than exactly represented) by the
-            // narrowing to float is treated like an out-of-range integer element; this
-            // is the same criterion write_compact_float() uses for CBOR/MessagePack
-            const bool in_range = std::isnan(dval) ||
-                                  (dval >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
-                                   dval <= static_cast<double>((std::numeric_limits<float>::max)()) &&
-                                   static_cast<double>(static_cast<float>(dval)) == dval) ||
-                                  std::isinf(dval);
+        // a value that would be rounded (rather than exactly represented) by the
+        // narrowing to float is treated like an out-of-range integer element; this
+        // is the same criterion write_compact_float() uses for CBOR/MessagePack
+        return std::isnan(dval) ||
+               (dval >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                dval <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(dval)) == dval) ||
+               std::isinf(dval);
 #ifdef __GNUC__
-            JSON_HEDLEY_DIAGNOSTIC_POP
+        JSON_HEDLEY_DIAGNOSTIC_POP
 #endif
-            return in_range;
-        }
-        write_number(static_cast<float>(dval), true);
-        return true;
     }
 
     /*!
     @brief write the elements of an ND-array as the number kind @a dtype names
            (see @ref write_bjdata_ndarray), after they have been found to be
-           in range by a dry run of @ref write_bjdata_ndarray_elements
+           in range by @ref bjdata_ndarray_elements_in_range
 
     The elements are encoded in blocks into space reserved from the sink.
     */
@@ -4036,20 +4265,13 @@ class binary_writer
     }
 
     /*!
-    @brief validate or write every element of a BJData ND-array's `_ArrayData_`
+    @brief whether every element of a BJData ND-array's `_ArrayData_` is in range for its dtype
     @param[in] array_data  the `_ArrayData_` array
     @param[in] dtype       the ND-array dtype marker, as returned by bjdata_ndarray_type_marker()
-    @param[in] dry_run     true to only range-check each element, false to write it
-    @return whether every element is in range for @a dtype (always true when @a dry_run is false)
+    @return whether every element is in range for @a dtype
     */
-    bool write_bjdata_ndarray_elements(const BasicJsonType& array_data, const CharType dtype, const bool dry_run)
+    static bool bjdata_ndarray_elements_in_range(const BasicJsonType& array_data, const CharType dtype)
     {
-        if (!dry_run)
-        {
-            write_bjdata_ndarray_values(array_data, dtype);
-            return true;
-        }
-
         for (const auto& el : array_data)
         {
             bool ok = true;
@@ -4057,43 +4279,39 @@ class binary_writer
             {
                 case 'U':
                 case 'B':
-                    ok = write_bjdata_ndarray_element<std::uint8_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::uint8_t>(el);
                     break;
                 case 'C':
                     // BJData limits a char to 0..127 (the intersection of the int8 and uint8 ranges)
                     ok = bjdata_ndarray_value_in_range<std::int8_t>(el) && bjdata_ndarray_value_in_range<std::uint8_t>(el);
                     break;
                 case 'i':
-                    ok = write_bjdata_ndarray_element<std::int8_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::int8_t>(el);
                     break;
                 case 'u':
-                    ok = write_bjdata_ndarray_element<std::uint16_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::uint16_t>(el);
                     break;
                 case 'I':
-                    ok = write_bjdata_ndarray_element<std::int16_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::int16_t>(el);
                     break;
                 case 'm':
-                    ok = write_bjdata_ndarray_element<std::uint32_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::uint32_t>(el);
                     break;
                 case 'l':
-                    ok = write_bjdata_ndarray_element<std::int32_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::int32_t>(el);
                     break;
                 case 'M':
-                    ok = write_bjdata_ndarray_element<std::uint64_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::uint64_t>(el);
                     break;
                 case 'L':
-                    ok = write_bjdata_ndarray_element<std::int64_t>(el, dry_run);
+                    ok = bjdata_ndarray_value_in_range<std::int64_t>(el);
                     break;
                 case 'd':
-                    ok = write_bjdata_ndarray_float_element(el, dry_run);
+                    ok = bjdata_ndarray_float_in_range(el);
                     break;
                 case 'D':
                 default:
                     // 'D' (double) already spans the full range of number_float_t
-                    if (!dry_run)
-                    {
-                        write_number(el.template get<double>(), true);
-                    }
                     break;
             }
             if (!ok)
@@ -4180,7 +4398,7 @@ class binary_writer
             const auto dim = el.template get<std::uint64_t>();
             if (!value_in_range_of<std::size_t>(dim))
             {
-                return true;
+                return true; // LCOV_EXCL_LINE (size_t is narrower than 64 bits)
             }
             const auto dim_size = static_cast<std::size_t>(dim);
 
@@ -4230,7 +4448,7 @@ class binary_writer
         // wrap (integers) or overflow to infinity (the "single" precision
         // float) instead of being reported, so such an object falls back to
         // a plain object encoding as well
-        if (!write_bjdata_ndarray_elements(array_data, dtype, true))
+        if (!bjdata_ndarray_elements_in_range(array_data, dtype))
         {
             return true;
         }
@@ -4242,7 +4460,7 @@ class binary_writer
 
         write_ubjson(array_size, use_count, use_type, true,  true, bjdata_version);
 
-        write_bjdata_ndarray_elements(array_data, dtype, false);
+        write_bjdata_ndarray_values(array_data, dtype);
         return false;
     }
 
@@ -4568,8 +4786,8 @@ class binary_writer
     run are encoded into space reserved from the sink, as in
     @ref write_array_elements; an integer that BON8 cannot write (an unsigned
     one above the int64 range, or one of a number type wider than 64 bits) throws
-    from write_bon8_value, like any other value that is not a number. Kept out
-    of line, like @ref write_cbor_array.
+    out_of_range.407, as write_bon8_value does. Kept out of line, like
+    @ref write_cbor_array.
     */
     template<typename ArrayType>
     JSON_HEDLEY_NEVER_INLINE
@@ -4619,10 +4837,10 @@ class binary_writer
                 string_open = false;
             }
 
-            if (unencodable)
+            if (JSON_HEDLEY_UNLIKELY(unencodable))
             {
-                write_bon8_value(*it, string_open, depth + 1);
-                ++it;
+                // an integer beyond the int64 range, as write_bon8_value would report it
+                throw_integer_out_of_range(*it, input_format_t::bon8, "int64");
             }
         }
     }
@@ -4657,14 +4875,13 @@ class binary_writer
                     break;
 
                 case value_t::number_integer:
-                    if (JSON_HEDLEY_LIKELY(integer_fits<std::int64_t>(value.m_data.m_value.number_integer)))
+                    if (JSON_HEDLEY_UNLIKELY(!integer_fits<std::int64_t>(value.m_data.m_value.number_integer)))
                     {
-                        write_bon8_integer(static_cast<std::int64_t>(value.m_data.m_value.number_integer));
-                        string_open = false;
-                        break;
+                        // beyond 64 bits (number types wider than that)
+                        throw_integer_out_of_range(value, input_format_t::bon8, "int64");
                     }
-                    // beyond 64 bits (number types wider than that): throws
-                    write_bon8_value(value, string_open, depth + 1);
+                    write_bon8_integer(static_cast<std::int64_t>(value.m_data.m_value.number_integer));
+                    string_open = false;
                     break;
 
                 case value_t::number_float:
@@ -4673,14 +4890,13 @@ class binary_writer
                     break;
 
                 case value_t::number_unsigned:
-                    if (JSON_HEDLEY_LIKELY(integer_fits_max<std::int64_t>(value.m_data.m_value.number_unsigned)))
+                    if (JSON_HEDLEY_UNLIKELY(!integer_fits_max<std::int64_t>(value.m_data.m_value.number_unsigned)))
                     {
-                        write_bon8_integer(static_cast<std::int64_t>(value.m_data.m_value.number_unsigned));
-                        string_open = false;
-                        break;
+                        // too large for BON8
+                        throw_integer_out_of_range(value, input_format_t::bon8, "int64");
                     }
-                    // too large for BON8: throws
-                    write_bon8_value(value, string_open, depth + 1);
+                    write_bon8_integer(static_cast<std::int64_t>(value.m_data.m_value.number_unsigned));
+                    string_open = false;
                     break;
 
                 case value_t::object:
@@ -4794,10 +5010,9 @@ class binary_writer
     static void check_utf8(const string_t& s, const BasicJsonType& context)
     {
         const auto* data = reinterpret_cast<const unsigned char*>(s.data());
-        const std::size_t valid = valid_utf8_prefix(data, s.size());
-        if (JSON_HEDLEY_UNLIKELY(valid != s.size()))
+        if (JSON_HEDLEY_UNLIKELY(!valid_utf8_string(data, s.size())))
         {
-            throw_invalid_utf8(data, valid, context);
+            throw_invalid_utf8(data, valid_utf8_prefix(data, s.size()), context);
         }
     }
 

include/nlohmann/detail/output/output_adapters.hpp

@@ -11,6 +11,7 @@
 #include <algorithm> // max
 #include <array> // array
 #include <cstddef> // size_t
+#include <cstdint> // uint32_t
 #include <cstring> // memcpy
 #include <memory> // shared_ptr, make_shared
 #include <string> // basic_string
@@ -227,6 +228,31 @@ class output_vector_sink
     void flush() noexcept
     {}
 
+    /// the number of characters written so far, the position of the next one
+    std::size_t written() const noexcept
+    {
+        return position();
+    }
+
+    /// @brief replace the 4 bytes written before at position @a pos with
+    ///        those of @a n, in the byte order of the machine
+    ///
+    /// Lets a writer put a length in front of data it has written since, such
+    /// as the size of a BSON document, without computing it in advance.
+    void overwrite(const std::size_t pos, const std::uint32_t n) noexcept
+    {
+        static_assert(sizeof(CharType) == 1, "overwrite() writes bytes");
+        JSON_ASSERT(pos + sizeof(n) <= position());
+        std::memcpy(v->data() + pos, &n, sizeof(n));
+    }
+
+    /// drop the characters written from position @a pos on
+    void rewind(const std::size_t pos) noexcept
+    {
+        JSON_ASSERT(pos <= position());
+        cursor = v->data() + pos;
+    }
+
   private:
     /// number of characters of *v written so far
     std::size_t position() const noexcept

include/nlohmann/detail/output/serializer.hpp

@@ -1113,36 +1113,21 @@ class serializer
                 {
                     // the code point is at least 0x60 (smaller ones are handled
                     // above) and is not printable ASCII (which the scanner
-                    // copies): it is DEL (0x7F) under EnsureAscii or a non-ASCII
-                    // character
+                    // copies). Under EnsureAscii it is DEL (0x7F): every
+                    // well-formed multi-byte character is escaped by
+                    // write_u_escapes() above, so decode() only ever accepts a
+                    // single byte here, and nothing of it was buffered
                     if (EnsureAscii)
                     {
-                        JSON_ASSERT(codepoint >= 0x7F);
-                        if (error_handler == error_handler_t::keep)
-                        {
-                            // this character was buffered as raw bytes below
-                            // in case it turned out to be part of an
-                            // ill-formed sequence (which is kept as is); now
-                            // that it decoded to a well-formed code point,
-                            // undo that and \u-escape it like any other
-                            // character instead
-                            bytes = bytes_after_last_accept;
-                        }
-                        if (codepoint <= 0xFFFF)
-                        {
-                            write_u_escape(bytes, static_cast<std::uint16_t>(codepoint));
-                        }
-                        else
-                        {
-                            write_u_escape(bytes, static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)));
-                            write_u_escape(bytes, static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu)));
-                        }
+                        JSON_ASSERT(codepoint == 0x7F);
+                        JSON_ASSERT(bytes == bytes_after_last_accept);
+                        write_u_escape(bytes, static_cast<std::uint16_t>(codepoint));
                     }
                     else
                     {
                         // copy byte to buffer (all previous bytes of the
                         // sequence have been copied in the default case below)
-                        string_buffer[bytes++] = s[i];
+                        string_buffer[bytes++] = s[i]; // LCOV_EXCL_LINE (well-formed sequences are copied in runs)
                     }
 
                     reserve_string_buffer(bytes);
@@ -1977,6 +1962,23 @@ class serializer
             return;
         }
 
+        // 17 to 20 digits: the first one to four, then twice eight
+        if (magnitude_fits_64_bits(abs_value, std::integral_constant<bool, magnitude_has_at_most_64_bits>()))
+        {
+            const auto value = static_cast<std::uint64_t>(abs_value);
+            const std::uint64_t top = value / 10000000000000000u; // 1 to 1844
+            const std::uint64_t low16 = value - (top * 10000000000000000u);
+            const std::uint64_t middle = low16 / 100000000u;
+            const std::uint64_t first = dtoa_impl::eight_digit_bytes(top);
+            const auto leading = static_cast<unsigned>(count_leading_zeros(first) / 8); // (first is not 0)
+            char* const p = buffer_ptr + n_chars;
+            dtoa_impl::store_msb_first(p, (first << (8 * leading)) + 0x3030303030303030u);
+            dtoa_impl::store_msb_first(p + 8 - leading, dtoa_impl::eight_digit_bytes(middle) + 0x3030303030303030u);
+            dtoa_impl::store_msb_first(p + 16 - leading, dtoa_impl::eight_digit_bytes(low16 - (middle * 100000000u)) + 0x3030303030303030u);
+            write_buffer_pos += n_chars + 24 - leading;
+            return;
+        }
+
         n_chars += count_digits(abs_value);
 
         // spare 1 byte for '\0'
@@ -2122,6 +2124,23 @@ class serializer
         }
     }
 
+    /// whether every number_magnitude_t fits 64 bits
+    static constexpr bool magnitude_has_at_most_64_bits = std::numeric_limits<number_magnitude_t>::is_specialized
+        && std::numeric_limits<number_magnitude_t>::digits <= 64;
+
+    /// whether @a x fits 64 bits: always if number_magnitude_t has at most
+    /// 64 bits (selected by type, as the comparison would be reported as
+    /// always true), else compared
+    static bool magnitude_fits_64_bits(const number_magnitude_t& /*unused*/, std::true_type /*unused*/) noexcept
+    {
+        return true;
+    }
+
+    static bool magnitude_fits_64_bits(const number_magnitude_t& x, std::false_type /*unused*/) noexcept
+    {
+        return x <= 18446744073709551615u;
+    }
+
     /*
      * Helper function for dump_integer
      *

include/nlohmann/detail/string_concat.hpp

@@ -139,7 +139,7 @@ inline OutStringType concat(Args && ... args)
     str.reserve(concat_length(args...));
     concat_into(str, std::forward<Args>(args)...);
     return str;
-}
+} // LCOV_EXCL_LINE (exception cleanup only)
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/string_escape.hpp

@@ -83,10 +83,6 @@ template<typename StringType>
 inline void unescape(StringType& s)
 {
     auto pos = s.find_first_of('~', 0);
-    if (pos == StringType::npos)
-    {
-        return;
-    }
 
     StringType result;
     result.reserve(s.size());

include/nlohmann/detail/string_utils.hpp

@@ -36,7 +36,7 @@ StringType to_string(std::size_t value)
     StringType result;
     int_to_string(result, value);
     return result;
-}
+} // LCOV_EXCL_LINE (exception cleanup only)
 
 /// @return a byte as two uppercase hexadecimal digits
 inline std::string hex_byte(const std::uint8_t byte)
@@ -46,7 +46,7 @@ inline std::string hex_byte(const std::uint8_t byte)
     result[0] = nibble_to_hex[byte / 16];
     result[1] = nibble_to_hex[byte % 16];
     return result;
-}
+} // LCOV_EXCL_LINE (exception cleanup only)
 
 /*!
 @brief write a UTF-16 code unit as four lowercase hexadecimal digits
@@ -390,7 +390,7 @@ inline StringType sanitize_utf8(const StringType& s, const error_handler_t error
     }
 
     return result;
-}
+} // LCOV_EXCL_LINE (exception cleanup only)
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/view/builder.hpp

@@ -69,7 +69,8 @@ struct parse_failure
 };
 
 /// FloatType: the number_float_t of the document, whose overflow parse() rejects
-template<typename FloatType, bool Comments, bool TrailingCommas, bool NulIsEnd, bool Sentinel>
+/// Store: false for accept(): the grammar, number, string and UTF-8 checks run as for parse(), but no node is written
+template<typename FloatType, bool Comments, bool TrailingCommas, bool NulIsEnd, bool Sentinel, bool Store>
 class builder
 {
   public:
@@ -245,11 +246,87 @@ class builder
         return p;
     }
 
+    /// the string from p, the first backslash, control character, ill-formed UTF-8 byte, or the end, checked and not
+    /// decoded (accept() stores nothing, so the arena is not written): the checks, errors and error positions of
+    /// slow_string(), for everything up to the closing quote
+    NLOHMANN_VIEW_NOINLINE decoded check_string(const unsigned char* p)
+    {
+        const unsigned char* const end = m_end;
+        for (;;)
+        {
+            if (p == end)
+            {
+                return failed(error_code::string_missing_quote, p);
+            }
+            const unsigned char c = *p;
+            if (c == '"')
+            {
+                ++p;
+                return decoded{p, 0, 0};
+            }
+            if (c != '\\')
+            {
+                return failed(c < 0x20 ? error_code::string_control_character : error_code::string_utf8, p);
+            }
+            ++p;
+            if (p == end)
+            {
+                return failed(error_code::string_missing_quote, p);
+            }
+            const unsigned char d = *p++;
+            if (d == 'u')
+            {
+                const int cp = hex4(p); // (moves p past the four digits)
+                if (NLOHMANN_VIEW_UNLIKELY(cp < 0))
+                {
+                    return failed(error_code::string_unicode_hex, p);
+                }
+                if (NLOHMANN_VIEW_UNLIKELY((cp & 0xF800) == 0xD800)) // a surrogate
+                {
+                    if (cp >= 0xDC00)
+                    {
+                        return failed(error_code::string_surrogate_low, p);
+                    }
+                    if (end - p < 2 || p[0] != '\\' || p[1] != 'u')
+                    {
+                        return failed(error_code::string_surrogate_high, p);
+                    }
+                    p += 2;
+                    const int lo = hex4(p); // (moves p past the four digits)
+                    if (lo < 0)
+                    {
+                        return failed(error_code::string_unicode_hex, p);
+                    }
+                    if (lo < 0xDC00 || lo > 0xDFFF)
+                    {
+                        return failed(error_code::string_surrogate_high, p);
+                    }
+                }
+            }
+            else if (!(d == '"' || d == '\\' || d == '/' || d == 'b' || d == 'f' || d == 'n' || d == 'r' || d == 't'))
+            {
+                --p;
+                return failed(error_code::string_escape, p);
+            }
+            if (p != end && *p == '\\')
+            {
+                continue; // (escapes in a row: no run of text between them)
+            }
+            p = scan_string_run(p, end); // the text up to the next backslash, quote, control character, or ill-formed UTF-8
+        }
+    }
+
     /// s points to the start of the string, p to a backslash, a control
     /// character, an ill-formed UTF-8 byte, or the end: decode the string into
     /// the arena
     NLOHMANN_VIEW_NOINLINE decoded slow_string(const unsigned char* s, const unsigned char* p)
     {
+        if (!enabled(Store))
+        {
+            // (accept(): the string is checked, not decoded)
+            static_cast<void>(s);
+            return check_string(p);
+        }
         // single-character escapes; 0: invalid (and 'u', handled separately)
         static const std::array<char, 128> simple_escape =
         {
@@ -343,6 +420,21 @@ class builder
                 }
                 arena_ensure(w, w_end, 4);
                 w = put_utf8(w, cp);
+                // A chain of unicode escapes ("\u3042\u3044\u3046", as Python's json.dumps writes non-ASCII text) is
+                // decoded here, without going round the loop above for each of them. Anything else (a surrogate, a
+                // bad digit, fewer than six bytes) leaves p at the backslash: the loop above handles it, and reports
+                // the same error at the same position as it would without this loop.
+                while (end - p >= 6 && p[0] == '\\' && p[1] == 'u')
+                {
+                    const int next = hex_codepoint(p + 2);
+                    if (next < 0 || (next & 0xF800) == 0xD800)
+                    {
+                        break;
+                    }
+                    p += 6;
+                    arena_ensure(w, w_end, 4);
+                    w = put_utf8(w, next);
+                }
             }
             else if (NLOHMANN_VIEW_LIKELY(d < 128 && simple_escape[d] != 0))
             {
@@ -610,10 +702,13 @@ run_found:
 
         NLOHMANN_VIEW_ALWAYS_INLINE bool run()
         {
-            cold.m_doc.reserve(estimate_nodes(reinterpret_cast<const char*>(b), static_cast<std::size_t>(e - b)));
-            base = cold.m_doc.nodes;
-            out = base;
-            cap = base + cold.m_doc.node_capacity;
+            if (enabled(Store))
+            {
+                cold.m_doc.reserve(estimate_nodes(reinterpret_cast<const char*>(b), static_cast<std::size_t>(e - b)));
+                base = cold.m_doc.nodes;
+                out = base;
+                cap = base + cold.m_doc.node_capacity;
+            }
 
             if (e - p >= 3 && p[0] == 0xEF && p[1] == 0xBB && p[2] == 0xBF)
             {
@@ -797,7 +892,10 @@ close_object:
             // an array pays nothing for this)
             if (NLOHMANN_VIEW_UNLIKELY(cur_count >= document_data::index_min_members))
             {
-                cold.note_large_object(cur_idx);
+                if (enabled(Store))
+                {
+                    cold.note_large_object(cur_idx);
+                }
             }
 
 close_container:
@@ -957,6 +1055,12 @@ indent_done:
         /// an integer's value); two stores on little-endian targets
         NLOHMANN_VIEW_ALWAYS_INLINE node* push_node(node_kind k, std::uint8_t flags, std::uint16_t extra, std::size_t off, std::uint64_t second)
         {
+            if (!enabled(Store))
+            {
+                // accept(): nothing is stored, so what computes the arguments is not run either. base and out stay
+                // null: their difference, which open() takes, is 0.
+                return out;
+            }
             if (NLOHMANN_VIEW_UNLIKELY(out == cap))
             {
                 const auto n = static_cast<std::size_t>(out - base);
@@ -1015,9 +1119,12 @@ indent_done:
 
         NLOHMANN_VIEW_ALWAYS_INLINE void close()
         {
-            node& n = base[cur_idx];
-            n.len = cur_count;
-            n.next = static_cast<std::uint32_t>(out - base) - cur_idx;
+            if (enabled(Store))
+            {
+                node& n = base[cur_idx];
+                n.len = cur_count;
+                n.next = static_cast<std::uint32_t>(out - base) - cur_idx;
+            }
             if (--depth != 0)
             {
                 if (NLOHMANN_VIEW_LIKELY(depth <= 64))
@@ -1067,8 +1174,9 @@ indent_done:
             {
                 ++p;
             }
-            else if (NLOHMANN_VIEW_LIKELY(cur() >= '1' && cur() <= '9'))
+            else if (!negative || NLOHMANN_VIEW_LIKELY(cur() >= '1' && cur() <= '9'))
             {
+                // (without a sign, the dispatch saw a digit)
                 p = skip_digits(p + 1, e);
             }
             else
@@ -1082,7 +1190,7 @@ indent_done:
             {
                 ++p;
                 const unsigned char* const f0 = p;
-                p = skip_digits(p, e);
+                p = skip_fraction_digits(p, e);
                 if (NLOHMANN_VIEW_UNLIKELY(p == f0))
                 {
                     return fail(error_code::number_after_dot);
@@ -1192,34 +1300,44 @@ indent_done:
 };
 
 /// run the builder with compile-time options
-template<typename FloatType, bool Comments, bool TrailingCommas, bool NulIsEnd>
+template<typename FloatType, bool Comments, bool TrailingCommas, bool NulIsEnd, bool Store>
 inline bool build_with(document_data& d, const char* src, std::size_t size, bool sentinel, parse_failure& failure)
 {
     if (sentinel)
     {
-        builder<FloatType, Comments, TrailingCommas, NulIsEnd, true> bld(d, src, size);
+        builder<FloatType, Comments, TrailingCommas, NulIsEnd, true, Store> bld(d, src, size);
         const bool ok = bld.run();
         failure = bld.failure();
         return ok;
     }
-    builder<FloatType, Comments, TrailingCommas, NulIsEnd, false> bld(d, src, size);
+    builder<FloatType, Comments, TrailingCommas, NulIsEnd, false, Store> bld(d, src, size);
     const bool ok = bld.run();
     failure = bld.failure();
     return ok;
 }
 
 /// sentinel: src[size] is readable and 0 (e.g. std::string); FloatType: the
-/// number_float_t of the document
+/// number_float_t of the document; validate_only: accept(), only the result is
+/// used
 template<typename FloatType, bool NulIsEnd>
-inline bool build(document_data& d, const char* src, std::size_t size, bool comments, bool trailing_commas, bool sentinel, parse_failure& failure)
+inline bool build(document_data& d, const char* src, std::size_t size, bool comments, bool trailing_commas, bool sentinel, bool validate_only,
+                  parse_failure& failure)
 {
+    if (validate_only && !comments && !trailing_commas)
+    {
+        // accept() of plain JSON: nothing is stored. The other option sets
+        // could skip the stores just as well; they keep the builder that
+        // stores only so that there are two more instantiations of the parse
+        // loop, not eight.
+        return build_with<FloatType, false, false, NulIsEnd, false>(d, src, size, sentinel, failure);
+    }
     if (comments)
     {
-        return trailing_commas ? build_with<FloatType, true, true, NulIsEnd>(d, src, size, sentinel, failure)
-               : build_with<FloatType, true, false, NulIsEnd>(d, src, size, sentinel, failure);
+        return trailing_commas ? build_with<FloatType, true, true, NulIsEnd, true>(d, src, size, sentinel, failure)
+               : build_with<FloatType, true, false, NulIsEnd, true>(d, src, size, sentinel, failure);
     }
-    return trailing_commas ? build_with<FloatType, false, true, NulIsEnd>(d, src, size, sentinel, failure)
-           : build_with<FloatType, false, false, NulIsEnd>(d, src, size, sentinel, failure);
+    return trailing_commas ? build_with<FloatType, false, true, NulIsEnd, true>(d, src, size, sentinel, failure)
+           : build_with<FloatType, false, false, NulIsEnd, true>(d, src, size, sentinel, failure);
 }
 
 }  // namespace view

include/nlohmann/detail/view/compare.hpp

@@ -397,9 +397,9 @@ class view_side
         return m_view.size();
     }
 
-    string_view_t string() const
+    string_view_t string() const noexcept
     {
-        return m_view.get_string();
+        return {m_view.m_doc->str(*m_view.m_node), m_view.m_node->len};
     }
 
     bool boolean() const noexcept
@@ -428,28 +428,19 @@ class view_side
         return string_view_t(m_view.m_doc->str(*m_view.m_node), m_view.m_node->len);
     }
 
-    /// a number, boolean, or null as a basic_json value (no allocation)
+    /// a number as a basic_json value (no allocation); only called for numbers
     BasicJsonType scalar() const
     {
-        switch (m_view.type())
+        const value_t t = m_view.type();
+        if (t == value_t::number_integer)
         {
-            case value_t::number_integer:
-                return BasicJsonType(m_view.template get<typename BasicJsonType::number_integer_t>());
-            case value_t::number_unsigned:
-                return BasicJsonType(m_view.template get<typename BasicJsonType::number_unsigned_t>());
-            case value_t::number_float:
-                return BasicJsonType(m_view.template get<typename BasicJsonType::number_float_t>());
-            case value_t::boolean:
-                return BasicJsonType(m_view.template get<bool>());
-            case value_t::null:
-            case value_t::object:
-            case value_t::array:
-            case value_t::string:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                return BasicJsonType(nullptr);
+            return BasicJsonType(m_view.template get<typename BasicJsonType::number_integer_t>());
         }
+        if (t == value_t::number_unsigned)
+        {
+            return BasicJsonType(m_view.template get<typename BasicJsonType::number_unsigned_t>());
+        }
+        return BasicJsonType(m_view.template get<typename BasicJsonType::number_float_t>());
     }
 
     /// start at the first element of this array
@@ -531,9 +522,9 @@ class json_side
         return m_json->size();
     }
 
-    string_view_t string() const
+    string_view_t string() const noexcept
     {
-        const auto& s = m_json->template get_ref<const typename BasicJsonType::string_t&>();
+        const auto& s = *m_json->template get_ptr<const typename BasicJsonType::string_t*>();
         return string_view_t(s.data(), s.size());
     }
 

include/nlohmann/detail/view/edit.hpp

@@ -96,11 +96,11 @@ NLOHMANN_VIEW_NOINLINE inline void check_utf8_scan(const unsigned char* p, std::
         }
         if (*q >= 0x80)
         {
-            check_utf8_bytewise(p, n, static_cast<std::size_t>(q - p));
-            return; // not reached: the scan stopped at ill-formed UTF-8
+            break; // ill-formed UTF-8: reported below
         }
         ++q; // a quote, backslash, or control character
     }
+    check_utf8_bytewise(p, n, static_cast<std::size_t>(q - p));
 }
 
 inline void check_utf8(const char* s, std::size_t n)
@@ -157,7 +157,7 @@ class editor
         node* const o = own(object);
         if (o->kind != node_kind::object && o->kind != node_kind::null)
         {
-            throw_type_error(exception_id::subscript_wrong_type, "cannot use operator[] with a string argument with ", object.type_name());
+            throw_type_error(site_of(object), exception_id::subscript_wrong_type, "cannot use operator[] with a string argument with ", object.type_name());
         }
         check_utf8(key.data(), key.size());
         const encoded e = encode(std::forward<V>(value));
@@ -208,9 +208,9 @@ class editor
         node* const a = own(array);
         if (a->kind != node_kind::array)
         {
-            throw_type_error(exception_id::subscript_wrong_type, "cannot use operator[] with a numeric argument with ", array.type_name());
+            throw_type_error(site_of(array), exception_id::subscript_wrong_type, "cannot use operator[] with a numeric argument with ", array.type_name());
         }
-        check_index(idx, a->len);
+        check_index(a, idx, a->len);
         const encoded e = encode(std::forward<V>(value));
         node* const slot = const_cast<node*>(nav::value(element_at<true>(m_doc, a, idx))); // NOLINT(cppcoreguidelines-pro-type-const-cast)
         assign(slot, e, a, true);
@@ -225,7 +225,7 @@ class editor
         node* const a = own(array);
         if (a->kind != node_kind::array && a->kind != node_kind::null)
         {
-            throw_type_error(exception_id::push_back_wrong_type, "cannot use push_back() with ", array.type_name());
+            throw_type_error(site_of(array), exception_id::push_back_wrong_type, "cannot use push_back() with ", array.type_name());
         }
         const encoded e = encode(std::forward<V>(value));
         if (a->kind == node_kind::null)
@@ -249,9 +249,9 @@ class editor
         node* const a = own(array);
         if (a->kind != node_kind::array)
         {
-            throw_type_error(exception_id::insert_wrong_type, "cannot use insert() with ", array.type_name());
+            throw_type_error(site_of(array), exception_id::insert_wrong_type, "cannot use insert() with ", array.type_name());
         }
-        check_index(idx, a->len + 1);
+        check_index(a, idx, a->len + 1);
         const encoded e = encode(std::forward<V>(value));
         node* const slot = new_slot(e);
         node* const h = block_of(m_doc, a, 1);
@@ -269,7 +269,7 @@ class editor
         node* const o = own(object);
         if (o->kind != node_kind::object)
         {
-            throw_type_error(exception_id::erase_wrong_type, "cannot use erase() with ", object.type_name());
+            throw_type_error(site_of(object), exception_id::erase_wrong_type, "cannot use erase() with ", object.type_name());
         }
         for (const node* k = nav::first(m_doc, o), *end = nav::end(m_doc, o); k != end; k = document_data::after(k + 1))
         {
@@ -287,9 +287,9 @@ class editor
         node* const a = own(array);
         if (a->kind != node_kind::array)
         {
-            throw_type_error(exception_id::erase_wrong_type, "cannot use erase() with ", array.type_name());
+            throw_type_error(site_of(array), exception_id::erase_wrong_type, "cannot use erase() with ", array.type_name());
         }
-        check_index(idx, a->len);
+        check_index(a, idx, a->len);
         node* const h = block_of(m_doc, a, 0);
         std::memmove(h + 1 + idx, h + 2 + idx, (h->next - 2 - idx) * sizeof(node));
         --h->next;
@@ -316,11 +316,11 @@ class editor
         return const_cast<node*>(v.m_node); // NOLINT(cppcoreguidelines-pro-type-const-cast): the nodes belong to this document
     }
 
-    static void check_index(std::size_t idx, std::size_t limit)
+    void check_index(const node* array, std::size_t idx, std::size_t limit) const
     {
         if (idx >= limit)
         {
-            throw_array_index_out_of_range(idx);
+            throw_array_index_out_of_range(error_site(&m_doc, array), idx);
         }
     }
 

include/nlohmann/detail/view/edit_storage.hpp

@@ -158,7 +158,7 @@ inline void set_moved(document_data& d, node* n, node* seq, std::size_t cap)
         e.moved_cap[n->off] = cap;
         return;
     }
-    reserve_moved(d);
+    // every caller has called reserve_moved() (see above), so neither push_back() can throw
     e.moved.push_back(seq);
     e.moved_cap.push_back(cap);
     n->off = static_cast<std::uint32_t>(e.moved.size() - 1);
@@ -243,7 +243,7 @@ inline node* find_parent(const document_data& d, const node* target)
     }
     if (target == lo)
     {
-        return nullptr;
+        return nullptr; // LCOV_EXCL_LINE (the root, or a new value's root, which is linked)
     }
     for (;;)
     {

include/nlohmann/detail/view/errors.hpp

@@ -10,11 +10,15 @@
 
 #include <algorithm> // min
 #include <cstddef> // size_t
-#include <string> // string
+#include <string> // string, to_string
+#include <vector> // vector
 
 #include <nlohmann/json.hpp>
 #include <nlohmann/detail/view/builder.hpp>
+#include <nlohmann/detail/view/document_data.hpp>
 #include <nlohmann/detail/view/macro_scope.hpp>
+#include <nlohmann/detail/view/materialize.hpp>
+#include <nlohmann/detail/view/node.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
@@ -22,8 +26,295 @@ namespace detail
 namespace view
 {
 
+/*!
+@brief the value an exception is about
+
+basic_json passes the value to the exception, which then names its path
+(JSON_DIAGNOSTICS) and its bytes in the source (JSON_DIAGNOSTIC_POSITIONS). A
+view's value has no parent pointer and no stored positions: both are found
+from the document and the node, when the exception is thrown (so only the
+error path pays for them). Without the two macros, a site is empty.
+*/
+class error_site
+{
+  public:
+    error_site() noexcept = default;
+
+#if JSON_DIAGNOSTICS || JSON_DIAGNOSTIC_POSITIONS
+    error_site(const document_data* d, const node* n) noexcept
+        : m_doc(d), m_node(n)
+    {}
+
+    const document_data* doc() const noexcept
+    {
+        return m_doc;
+    }
+    const node* value() const noexcept
+    {
+        return m_node;
+    }
+
+  private:
+    const document_data* m_doc = nullptr;
+    const node* m_node = nullptr;
+#else
+    error_site(const document_data* /*d*/, const node* /*n*/) noexcept {}
+#endif
+};
+
+/// the site of a view's value (the views make this a friend)
+struct view_access
+{
+    template<typename View>
+    static error_site site(const View& v) noexcept
+    {
+        return {v.m_doc, v.m_node};
+    }
+};
+
+template<typename View>
+error_site site_of(const View& v) noexcept
+{
+    static_assert(is_json_view<View>::value, "the site of a value is only defined for views");
+    return view_access::site(v);
+}
+
+#if JSON_DIAGNOSTICS
+/*!
+@brief the JSON pointer tokens from the root of document @a d to node @a target
+
+Nodes have no parent index, so the path is found by descending from the root:
+before the first edit, only into the subtree that contains the target (a
+container spans the next `next` nodes); after edits, elements can live in
+other sequences, so every container is searched. Iterative (the nesting depth
+is limited by memory only). False if the target is not found (then tokens is
+unspecified).
+*/
+template<bool Editable>
+bool value_path(const document_data& d, const node* target, std::vector<std::string>& tokens)
+{
+    using nav = navigation<Editable>;
+    struct frame
+    {
+        const node* pos;
+        const node* end;
+        std::size_t index;
+        bool object;
+    };
+    const node* const root = d.nodes;
+    if (target == root)
+    {
+        return true;
+    }
+    if (!is_container(*root))
+    {
+        return false;
+    }
+    std::vector<frame> stack;
+    stack.push_back(frame{nav::first(d, root), nav::end(d, root), 0, root->kind == node_kind::object});
+    // (tokens[i] leads from stack[i] to stack[i + 1], or to the target)
+    for (;;)
+    {
+        // a copy: pop_back() and push_back() below change the stack
+        const frame f = stack.back();
+        if (f.pos == f.end)
+        {
+            stack.pop_back();
+            if (stack.empty())
+            {
+                return false;
+            }
+            tokens.pop_back();
+            continue;
+        }
+        const node* entry = f.pos;
+        std::string token;
+        if (f.object)
+        {
+            // (as basic_json: the key up to a null byte)
+            token.assign(d.str(*entry), entry->len);
+            const std::size_t nul = token.find('\0');
+            if (nul != std::string::npos)
+            {
+                token.resize(nul);
+            }
+            ++entry;
+        }
+        else
+        {
+            token = std::to_string(f.index);
+        }
+        const node* const child = nav::value(entry);
+        if (child == target)
+        {
+            tokens.push_back(token);
+            return true;
+        }
+        stack.back().pos = document_data::after(entry);
+        ++stack.back().index;
+        if (is_container(*child) && (nav::editable() || (target > child && target < child + child->next)))
+        {
+            tokens.push_back(token);
+            stack.push_back(frame{nav::first(d, child), nav::end(d, child), 0, child->kind == node_kind::object});
+        }
+    }
+}
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+/*!
+@brief the bytes [start, end) of node @a n in the source, as materialize() sets them
+
+Scalars as position_source::set_scalar; an array or object from its opening
+bracket to its closing bracket, which is found by following the chain of last
+elements to a scalar (or an empty container) and scanning from there to the
+closing brackets. None (npos) for values written by edits, and for containers
+whose last element has none, as with materialize().
+*/
+template<bool Editable>
+void value_range(const document_data& d, const node* n, std::size_t& start, std::size_t& end)
+{
+    using nav = navigation<Editable>;
+    position_source p;
+    start = std::string::npos;
+    end = std::string::npos;
+    if (!is_container(*n))
+    {
+        p.set_scalar(d, *n);
+        start = p.start;
+        end = p.end;
+        return;
+    }
+    // the open brackets: n, then the last element as long as it is a non-empty container
+    std::size_t closing = 0;
+    std::size_t pos = std::string::npos;
+    for (const node* c = n;;)
+    {
+        if (!is_container(*c))
+        {
+            p.set_scalar(d, *c);
+            pos = p.end;
+            break;
+        }
+        if ((c->flags & node_flags::is_new) != 0 || c->off >= d.size)
+        {
+            return;
+        }
+        ++closing;
+        const node* const first = nav::first(d, c);
+        const node* const last_end = nav::end(d, c);
+        if (first == last_end)
+        {
+            pos = std::size_t{c->off} + 1;
+            break;
+        }
+        const std::size_t value_offset = c->kind == node_kind::object ? 1 : 0;
+        const node* last = first;
+        for (const node* e = document_data::after(first + value_offset); e != last_end; e = document_data::after(e + value_offset))
+        {
+            last = e;
+        }
+        c = nav::value(last + value_offset);
+    }
+    for (; closing != 0 && pos != std::string::npos; --closing)
+    {
+        pos = position_source::container_end(d.base[0], d.size, pos);
+    }
+    if (pos != std::string::npos)
+    {
+        start = n->off;
+        end = pos;
+    }
+}
+#endif
+
+/// the context basic_json puts in front of the message of an exception about
+/// a value: "(/path) " with JSON_DIAGNOSTICS (none for the root), then
+/// "(bytes a-b) " with JSON_DIAGNOSTIC_POSITIONS (also for the root); with
+/// JSON_DIAGNOSTICS, nothing for a value that is no longer part of the document
+///
+/// This and the throw helpers that take an error_site are templates, so that
+/// the path and range code is instantiated only where an exception can be
+/// thrown: instantiated in every translation unit (as a non-template inline
+/// function makes it), it changed GCC's early inlining of unrelated view
+/// functions, so that GCC 13 no longer inlined a recursive walk over a view
+/// into itself (2.7 times the instructions).
+#if JSON_DIAGNOSTICS || JSON_DIAGNOSTIC_POSITIONS
+template<typename Unused = void>
+std::string diagnostics(const error_site site)
+{
+    if (site.doc() == nullptr || site.value() == nullptr)
+    {
+        return "";
+    }
+    const document_data& d = *site.doc();
+    const bool edited = d.edits != nullptr;
+    std::string context;
+#if JSON_DIAGNOSTICS
+    std::vector<std::string> tokens;
+    // a value that is no longer part of the document has no path, and its
+    // node still holds the bytes it had in the source: no context at all
+    const bool found = edited ? value_path<true>(d, site.value(), tokens) : value_path<false>(d, site.value(), tokens);
+    if (!found)
+    {
+        // context is still empty; returning it keeps the copy elided (-Wnrvo)
+        return context;
+    }
+    if (!tokens.empty())
+    {
+        // the root value has no path, but still has a byte range
+        std::string path;
+        for (const std::string& token : tokens)
+        {
+            path.push_back('/');
+            path += detail::escape(token);
+        }
+        context = concat('(', path, ") ");
+    }
+#endif
+#if JSON_DIAGNOSTIC_POSITIONS
+    std::size_t start = 0;
+    std::size_t end = 0;
+    if (edited)
+    {
+        value_range<true>(d, site.value(), start, end);
+    }
+    else
+    {
+        value_range<false>(d, site.value(), start, end);
+    }
+    if (start != std::string::npos && end != std::string::npos)
+    {
+        context += concat("(bytes ", std::to_string(start), "-", std::to_string(end), ") ");
+    }
+#endif
+    return context;
+}
+#else
+template<typename Unused = void>
+std::string diagnostics(const error_site /*site*/)
+{
+    return "";
+}
+#endif
+
+/// the context of an exception about view @a v (see exception_prefix())
+template<typename View>
+std::string diagnostics_of(const View& v)
+{
+    return diagnostics<>(site_of(v));
+}
+
 // Exceptions are thrown out of line, so that the accessors that may throw stay
-// small enough to be inlined.
+// small enough to be inlined. The overloads with an error_site put its context
+// in front of the message.
+//
+// The overloads without one are for exceptions that are not about a value of a
+// document: limits and invalid input of the editing and image functions, a
+// discarded view (it has no node), a view of another document (its path would
+// be one in that document), and those that basic_json creates without a
+// context too (the errors of json_pointer, invalid UTF-8). The one exception
+// about a value that has no site is key(), see view_iterator::key().
 
 [[noreturn]] NLOHMANN_VIEW_NOINLINE inline void throw_type_error(exception_id id, const char* prefix, const char* type)
 {
@@ -45,6 +336,24 @@ namespace view
     NLOHMANN_VIEW_THROW(invalid_iterator::create(id, msg, nullptr));
 }
 
+template<typename Unused = void>
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_type_error(const error_site site, exception_id id, const char* prefix, const char* type)
+{
+    NLOHMANN_VIEW_THROW(type_error::create(id, concat(diagnostics<>(site), prefix, type), nullptr));
+}
+
+template<typename Unused = void>
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_out_of_range(const error_site site, exception_id id, const std::string& msg)
+{
+    NLOHMANN_VIEW_THROW(out_of_range::create(id, concat(diagnostics<>(site), msg), nullptr));
+}
+
+template<typename Unused = void>
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_invalid_iterator(const error_site site, exception_id id, const char* msg)
+{
+    NLOHMANN_VIEW_THROW(invalid_iterator::create(id, concat(diagnostics<>(site), msg), nullptr));
+}
+
 /// a parse error without a position (as those of json_pointer)
 [[noreturn]] NLOHMANN_VIEW_NOINLINE inline void throw_parse_error(exception_id id, const std::string& msg)
 {
@@ -53,22 +362,23 @@ namespace view
 
 /// out_of_range.401: the array index @a idx is not below the size
 template<typename Index>
-[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_array_index_out_of_range(const Index idx)
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_array_index_out_of_range(const error_site site, const Index idx)
 {
-    throw_out_of_range(exception_id::array_index_out_of_range, concat("array index ", std::to_string(idx), " is out of range"));
+    throw_out_of_range(site, exception_id::array_index_out_of_range, concat("array index ", std::to_string(idx), " is out of range"));
 }
 
 /// out_of_range.402: the JSON Pointer token '-' of an array of @a size elements
-[[noreturn]] NLOHMANN_VIEW_NOINLINE inline void throw_array_index_past_end(std::size_t size)
+template<typename Unused = void>
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_array_index_past_end(const error_site site, std::size_t size)
 {
-    throw_out_of_range(exception_id::pointer_past_the_end_index, concat("array index '-' (", std::to_string(size), ") is out of range"));
+    throw_out_of_range(site, exception_id::pointer_past_the_end_index, concat("array index '-' (", std::to_string(size), ") is out of range"));
 }
 
 /// out_of_range.403: the object has no member @a key
 template<typename Key>
-[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_key_not_found(const Key& key)
+[[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_key_not_found(const error_site site, const Key& key)
 {
-    throw_out_of_range(exception_id::key_not_found, concat("key '", key, "' not found"));
+    throw_out_of_range(site, exception_id::key_not_found, concat("key '", key, "' not found"));
 }
 
 /// SAX handler of the error replay: accepts every event without storing it,
@@ -112,10 +422,12 @@ struct throwing_sax
         return true;
     }
 
+    // LCOV_EXCL_START (throw_parse_failure parses JSON only)
     bool binary(binary_t& /*unused*/)
     {
         return true;
     }
+    // LCOV_EXCL_STOP
 
     bool start_object(std::size_t /*unused*/)
     {

include/nlohmann/detail/view/image.hpp

@@ -787,10 +787,6 @@ inline void load_image(document_data& d, const std::uint8_t* image, std::size_t
     d.edits.reset();
     d.base[2] = nullptr;
     d.owned.clear();
-    if (d.owned_image.empty() || image != d.owned_image.data())
-    {
-        d.owned_image.clear();
-    }
     d.arena.clear();
     d.indexes.clear();
     d.index_slots.clear();

include/nlohmann/detail/view/iterator.hpp

@@ -105,7 +105,10 @@ class view_iterator
     }
 
     /// the key of the current object member; throws invalid_iterator.207 for
-    /// other iterators, like basic_json's iterators
+    /// other iterators, like basic_json's iterators (but without the context
+    /// JSON_DIAGNOSTICS and JSON_DIAGNOSTIC_POSITIONS add: the iterator does not
+    /// know the value it iterates over, and keeping it would make iterators
+    /// larger, which keeps GCC from inlining recursive walks)
     string_view_t key() const
     {
         if (NLOHMANN_VIEW_UNLIKELY(m_value_offset == 0))

include/nlohmann/detail/view/macro_scope.hpp

@@ -40,6 +40,15 @@
     #define NLOHMANN_VIEW_NOINLINE
 #endif
 
+// GCC: a function compiled as written, without the clones in which interprocedural
+// constant propagation drops an argument that every caller passes as the same constant
+// (calling such a clone changes the code GCC generates for the parse loop that calls it)
+#if defined(__GNUC__) && !defined(__clang__)
+    #define NLOHMANN_VIEW_NOCLONE __attribute__((noclone))
+#else
+    #define NLOHMANN_VIEW_NOCLONE
+#endif
+
 #if defined(__GNUC__) || defined(__clang__)
     #define NLOHMANN_VIEW_NODISCARD __attribute__((warn_unused_result))
 #elif defined(_MSC_VER)

include/nlohmann/detail/view/macro_unscope.hpp

@@ -15,6 +15,7 @@
 #undef NLOHMANN_VIEW_UNLIKELY
 #undef NLOHMANN_VIEW_ALWAYS_INLINE
 #undef NLOHMANN_VIEW_NOINLINE
+#undef NLOHMANN_VIEW_NOCLONE
 #undef NLOHMANN_VIEW_NODISCARD
 #undef NLOHMANN_VIEW_THROW
 #undef NLOHMANN_VIEW_LITTLE_ENDIAN

include/nlohmann/detail/view/materialize.hpp

@@ -65,14 +65,9 @@ struct position_source
         return token{end - start};
     }
 
-    /// the range [first, last), or none if either is npos
+    /// the range [first, last)
     void set(std::size_t first, std::size_t last) noexcept
     {
-        if (first == std::string::npos || last == std::string::npos)
-        {
-            clear();
-            return;
-        }
         start = first;
         end = last;
     }
@@ -191,11 +186,11 @@ struct position_source
                 first = n.off;
                 last = n.off + 4u;
                 break;
-            case node_kind::object:
+            case node_kind::object: // LCOV_EXCL_LINE
             case node_kind::array:
             case node_kind::link:
             default:
-                break;
+                break; // LCOV_EXCL_LINE
         }
         // (a crafted image can point past the text)
         if (last == std::string::npos || last > d.size)

include/nlohmann/detail/view/number.hpp

@@ -19,6 +19,7 @@
 #include <nlohmann/detail/view/macro_scope.hpp>
 #include <nlohmann/detail/view/node.hpp>
 #include <nlohmann/detail/view/scan.hpp>
+#include <nlohmann/detail/view/simd.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
@@ -103,12 +104,56 @@ NLOHMANN_VIEW_NOINLINE FloatType float_value(const char* first, const node& n)
     return convert_float<FloatType>(first, last, dot, mantissa_end);
 }
 
+#if NLOHMANN_VIEW_VECTOR
+/*!
+@brief the value of the first 16 digits of a run of digits with a point after
+int_digits of them (or none, if int_digits >= 16)
+
+The 17 bytes at p are read at once: the bytes after the point move down by one,
+then pairs, quadruples, and octets of digits are combined by multiplications
+(after simdjson). The bytes [p, p + 32) must be readable. Bytes that are not
+digits (only in a damaged image loaded with image_check::bounds) give a wrong
+value, but no undefined behavior.
+*/
+NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t sixteen_digits(const unsigned char* p, unsigned int_digits) noexcept
+{
+#if NLOHMANN_VIEW_NEON
+    const uint8x16_t low = vld1q_u8(p);
+    const uint8x16_t index = vcombine_u8(vcreate_u8(0x0706050403020100u), vcreate_u8(0x0F0E0D0C0B0A0908u));
+    const uint8x16_t before_point = vcltq_u8(index, vdupq_n_u8(static_cast<std::uint8_t>(int_digits)));
+    const uint8x16_t digits = vsubq_u8(vbslq_u8(before_point, low, vextq_u8(low, vld1q_u8(p + 16), 1)), vdupq_n_u8('0'));
+    const uint16x8_t twos = vpaddlq_u8(vmulq_u8(digits, vreinterpretq_u8_u16(vdupq_n_u16(0x010A))));
+    const uint32x4_t fours = vpaddlq_u16(vmulq_u16(twos, vreinterpretq_u16_u32(vdupq_n_u32(0x00010064))));
+    const uint64x2_t eights = vpaddlq_u32(vmulq_u32(fours, vreinterpretq_u32_u64(vdupq_n_u64(0x0000000100002710u))));
+    return (vgetq_lane_u64(eights, 0) * 100000000u) + vgetq_lane_u64(eights, 1);
+#else
+    // NOLINTBEGIN(portability-simd-intrinsics)
+    const __m128i low = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(p))); // NOLINT(bugprone-casting-through-void)
+    const __m128i high = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(p + 16))); // NOLINT(bugprone-casting-through-void)
+    const __m128i before_point = _mm_cmpgt_epi8(_mm_set1_epi8(static_cast<char>(int_digits)), _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15));
+    const __m128i moved = _mm_or_si128(_mm_srli_si128(low, 1), _mm_slli_si128(high, 15));
+    const __m128i digits = _mm_sub_epi8(_mm_or_si128(_mm_and_si128(before_point, low), _mm_andnot_si128(before_point, moved)), _mm_set1_epi8('0'));
+    // (16-bit lanes: SSE2 has no multiply-add of bytes)
+    const __m128i tens = _mm_setr_epi16(10, 1, 10, 1, 10, 1, 10, 1);
+    const __m128i twos = _mm_packs_epi32(_mm_madd_epi16(_mm_unpacklo_epi8(digits, _mm_setzero_si128()), tens),
+                                         _mm_madd_epi16(_mm_unpackhi_epi8(digits, _mm_setzero_si128()), tens));
+    const __m128i fours = _mm_madd_epi16(twos, _mm_setr_epi16(100, 1, 100, 1, 100, 1, 100, 1));
+    const __m128i eights = _mm_madd_epi16(_mm_packs_epi32(fours, fours), _mm_setr_epi16(10000, 1, 10000, 1, 10000, 1, 10000, 1));
+    const auto upper = static_cast<std::uint32_t>(_mm_cvtsi128_si32(eights));
+    const auto lower = static_cast<std::uint32_t>(_mm_cvtsi128_si32(_mm_srli_si128(eights, 4)));
+    // NOLINTEND(portability-simd-intrinsics)
+    return (std::uint64_t{upper} * 100000000u) + lower;
+#endif
+}
+#endif
+
 /*!
 @brief the digits of a float token with at most 19 digits, from its layout
 
 The digit layout recorded while parsing says where the integer digits, the
 fraction digits, and the exponent are, so the digits are read eight at a
-time without scanning.
+time without scanning (with SIMD, a token of 16 to 19 digits sixteen at a
+time).
 
 @param[in] p  first character of the token
 @param[in] e  end of the token
@@ -118,15 +163,34 @@ NLOHMANN_VIEW_ALWAYS_INLINE float_significand layout_decimal(const unsigned char
 {
     const bool negative = *p == '-';
     p += negative ? 1 : 0;
-    std::uint64_t w = parse_upto19(p, int_digits, limit);
-    p += int_digits;
+    std::uint64_t w = 0;
     std::int64_t q = 0;
-    if (frac_digits != 0)
+#if NLOHMANN_VIEW_VECTOR
+    const unsigned count = int_digits + frac_digits;
+    if (count >= 16 && limit - p >= 32)
     {
-        w = (w * int_pow10(frac_digits)) + parse_upto19(p + 1, frac_digits, limit);
-        p += 1 + frac_digits;
+        // (the point, if any, follows the integer digits; the digits after
+        // the first 16 are at most three)
+        w = sixteen_digits(p, int_digits);
+        for (unsigned i = 16; i < count; ++i)
+        {
+            w = (w * 10) + static_cast<std::uint64_t>(p[i + (i >= int_digits ? 1 : 0)] - '0');
+        }
+        p += count + (frac_digits != 0 ? 1 : 0);
         q = -static_cast<std::int64_t>(frac_digits);
     }
+    else /* NOLINT(readability/braces) */
+#endif
+    {
+        w = parse_upto19(p, int_digits, limit);
+        p += int_digits;
+        if (frac_digits != 0)
+        {
+            w = (w * int_pow10(frac_digits)) + parse_upto19(p + 1, frac_digits, limit);
+            p += 1 + frac_digits;
+            q = -static_cast<std::int64_t>(frac_digits);
+        }
+    }
     if (p != e)
     {
         // [eE][+-]digits; huge exponents saturate (the parser rejected
@@ -161,12 +225,22 @@ NLOHMANN_VIEW_ALWAYS_INLINE float_significand layout_decimal(const unsigned char
 The result is correctly rounded by the lexer's conversion
 (detail::decimal_to_float(): Clinger's fast path where both operands are
 exact, else the Eisel-Lemire algorithm, which needs no fallback for up to 19
-digits), so it is the value parse() produces.
+digits), so it is the value parse() produces. Tokens of 16 or more digits go
+to Eisel-Lemire directly: the fast path takes few of them (none of 17 digits),
+and its check is a branch that data like GeoJSON coordinates mispredicts.
 */
 template<typename FloatType>
 NLOHMANN_VIEW_ALWAYS_INLINE FloatType layout_float(const unsigned char* p, const unsigned char* e, unsigned int_digits, unsigned frac_digits, const unsigned char* limit) noexcept
 {
-    return decimal_to_float<FloatType>(layout_decimal(p, e, int_digits, frac_digits, limit));
+    const float_significand d = layout_decimal(p, e, int_digits, frac_digits, limit);
+    if (int_digits + frac_digits >= 16)
+    {
+        using format = ieee_binary_format<std::numeric_limits<FloatType>::digits>;
+        native_float_t<FloatType> value{};
+        float_from_bits(eisel_lemire<format>(d.exponent, d.w) | (d.negative ? (std::uint64_t{1} << format::sign_bit()) : 0u), value);
+        return value;
+    }
+    return decimal_to_float<FloatType>(d);
 }
 
 /// the value of a float set by an edit: its token (the shortest round-trip
@@ -185,6 +259,80 @@ NLOHMANN_VIEW_NOINLINE FloatType edited_float(const char* token, const node& n)
     return float_value<FloatType>(token, n);
 }
 
+#if NLOHMANN_VIEW_VECTOR
+/// eisel_lemire() for the token w * 10^q of coordinate_float()
+template<typename Format>
+NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t coordinate_bits(std::int64_t q, std::uint64_t w, Format /*format*/) noexcept
+{
+    return eisel_lemire<Format>(q, w);
+}
+
+/*!
+@brief (binary64) eisel_lemire() without the cases that tokens of 16 or 17
+digits with 5 or more after the point cannot reach: a value of 0, a
+subnormal, an infinity, or a tie (q < -4)
+*/
+NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t coordinate_bits(std::int64_t q, std::uint64_t w, ieee_binary_format<53> format) noexcept
+{
+    if (NLOHMANN_VIEW_UNLIKELY(w == 0 || q > -5))
+    {
+        return eisel_lemire<ieee_binary_format<53>>(q, w);
+    }
+    static_cast<void>(format);
+    const int lz = count_leading_zeros(w);
+    const std::uint64_t normalized = w << static_cast<unsigned>(lz);
+    const auto index = static_cast<std::size_t>(2 * (q - pow5_128_smallest_power));
+    const uint128_parts product = full_multiplication(normalized, pow5_128()[index]);
+    std::uint64_t high = product.high;
+    if (NLOHMANN_VIEW_UNLIKELY((high & 0x1FFu) == 0x1FFu))
+    {
+        // (the lower bits may carry into the result)
+        const std::uint64_t second = full_multiplication(normalized, pow5_128()[index + 1]).high;
+        high += product.low + second < product.low ? 1u : 0u;
+    }
+    const auto upperbit = static_cast<unsigned>(high >> 63u);
+    std::uint64_t mantissa = high >> (upperbit + 9);
+    auto power2 = static_cast<std::uint64_t>(((217706 * q) >> 16) + 63 + static_cast<std::int64_t>(upperbit) - lz + 1023);
+    mantissa = (mantissa + (mantissa & 1u)) >> 1u;
+    const bool carry = mantissa >= (std::uint64_t{2} << 52u);
+    mantissa = carry ? (std::uint64_t{1} << 52u) : mantissa;
+    power2 += carry ? 1u : 0u;
+    return (mantissa & ~(std::uint64_t{1} << 52u)) | (power2 << 52u);
+}
+
+/*!
+@brief (binary32 and binary64) the value of a float token of the source with
+16 or 17 digits, a point, and no exponent, the shape of most coordinates
+written with full precision; whether the token of n has this shape
+
+These tokens skip the general layout of layout_decimal(): no digits beyond
+the 17th, no exponent (and Eisel-Lemire directly, as in layout_float()).
+*/
+template<typename FloatType>
+NLOHMANN_VIEW_ALWAYS_INLINE bool coordinate_float(const document_data& d, const node& n, FloatType& value) noexcept
+{
+    const unsigned int_digits = n.extra & 0xFFu;
+    const unsigned frac_digits = n.extra >> 8u;
+    const unsigned count = int_digits + frac_digits;
+    const auto* const first = reinterpret_cast<const unsigned char*>(d.src + n.off); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
+    const unsigned negative = first[0] == '-' ? 1u : 0u;
+    if (count - 16u > 1u || frac_digits == 0 || n.len != negative + count + 1 || d.size - n.off < 33)
+    {
+        return false;
+    }
+    const unsigned char* const digits = first + negative;
+    const std::uint64_t w = sixteen_digits(digits, int_digits);
+    // (the 17th digit follows the point)
+    const std::uint64_t w17 = (w * 10) + static_cast<std::uint64_t>(digits[17] - '0');
+    using format = ieee_binary_format<std::numeric_limits<FloatType>::digits>;
+    native_float_t<FloatType> result{};
+    float_from_bits(coordinate_bits(-static_cast<std::int64_t>(frac_digits), count == 17 ? w17 : w, format{}) | (static_cast<std::uint64_t>(negative) << format::sign_bit()), result);
+    value = result;
+    return true;
+}
+
+#endif
+
 /// the value of the float token of a node, as parse() converts it; floats and
 /// doubles with at most 19 digits are converted from the digit layout
 template<typename FloatType>
@@ -200,6 +348,13 @@ FloatType float_value(const document_data& d, const node& n)
 template<typename FloatType>
 FloatType float_value(const document_data& d, const node& n, std::true_type /*binary32 or binary64*/)
 {
+#if NLOHMANN_VIEW_VECTOR
+    FloatType value {};
+    if (coordinate_float(d, n, value))
+    {
+        return value;
+    }
+#endif
     const unsigned int_digits = n.extra & 0xFFu;
     const unsigned frac_digits = n.extra >> 8u;
     if (NLOHMANN_VIEW_LIKELY(int_digits + frac_digits <= 19)) // (255 marks "many")

include/nlohmann/detail/view/pointer.hpp

@@ -44,6 +44,7 @@ index_status array_index(const StringType& s, std::size_t& idx) noexcept
 }
 
 /// throws the exception json_pointer::array_index throws for this status
+/// (without a context, as json_pointer::array_index)
 template<typename StringType>
 [[noreturn]] NLOHMANN_VIEW_NOINLINE void throw_array_index_error(index_status status, const StringType& s)
 {
@@ -83,7 +84,7 @@ View resolve_pointer(View cur, const Tokens& tokens, pointer_mode mode)
             {
                 if (mode == pointer_mode::checked)
                 {
-                    throw_key_not_found(token);
+                    throw_key_not_found(site_of(cur), token);
                 }
                 return View();
             }
@@ -95,7 +96,7 @@ View resolve_pointer(View cur, const Tokens& tokens, pointer_mode mode)
             {
                 if (throwing)
                 {
-                    throw_array_index_past_end(cur.size());
+                    throw_array_index_past_end(site_of(cur), cur.size());
                 }
                 return View();
             }
@@ -114,7 +115,7 @@ View resolve_pointer(View cur, const Tokens& tokens, pointer_mode mode)
             {
                 if (mode == pointer_mode::checked)
                 {
-                    throw_array_index_out_of_range(idx);
+                    throw_array_index_out_of_range(site_of(cur), idx);
                 }
                 return View();
             }
@@ -124,7 +125,7 @@ View resolve_pointer(View cur, const Tokens& tokens, pointer_mode mode)
         {
             if (throwing)
             {
-                throw_out_of_range(exception_id::pointer_unresolved, concat("unresolved reference token '", token, "'"));
+                throw_out_of_range(site_of(cur), exception_id::pointer_unresolved, concat("unresolved reference token '", token, "'"));
             }
             return View();
         }

include/nlohmann/detail/view/scan.hpp

@@ -198,6 +198,57 @@ inline const unsigned char* find_block_comment_end(const unsigned char* p, const
     return p;
 }
 
+/// The digits of a fraction, whose number varies from one number to the next: skip_digits() with 16 bytes compared at
+/// once and the end of the run taken from a bit mask (SSE2), instead of a compare and a branch for each digit. That
+/// is about a third of the instructions for a fraction of 12 digits, and no branch that is mispredicted when the
+/// lengths vary. Where there is no SSE2, skip_digits() is used.
+#if NLOHMANN_VIEW_SSE2
+// The last bytes of the input, one at a time. GCC unrolls this loop in every inlined copy of the function below, which
+// makes the parse loop 4 KiB larger and slows down documents that have hardly any fractions; out of line, it does
+// not. Clang does better with the loop inline (a call in the parse loop costs it more than the unrolling).
+#if defined(__GNUC__) && !defined(__clang__)
+inline NLOHMANN_VIEW_NOINLINE const unsigned char* skip_digits_tail(const unsigned char* p, const unsigned char* e) noexcept
+{
+    while (p != e && is_digit(*p))
+    {
+        ++p;
+    }
+    return p;
+}
+#else
+NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* skip_digits_tail(const unsigned char* p, const unsigned char* e) noexcept
+{
+    while (p != e && is_digit(*p))
+    {
+        ++p;
+    }
+    return p;
+}
+#endif
+
+NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* skip_fraction_digits(const unsigned char* p, const unsigned char* e) noexcept
+{
+    while (e - p >= 16)
+    {
+        const __m128i in = _mm_loadu_si128(static_cast<const __m128i*>(static_cast<const void*>(p))); // NOLINT(bugprone-casting-through-void)
+        // a digit is above '/' and below ':' (signed compares: a byte with the top bit set is negative, and neither)
+        const __m128i digits = _mm_and_si128(_mm_cmpgt_epi8(in, _mm_set1_epi8('/')), _mm_cmplt_epi8(in, _mm_set1_epi8(':')));
+        const auto not_digit = static_cast<std::uint64_t>(~static_cast<unsigned>(_mm_movemask_epi8(digits)) & 0xFFFFu);
+        if (not_digit != 0)
+        {
+            return p + count_trailing_zeros(not_digit);
+        }
+        p += 16;
+    }
+    return skip_digits_tail(p, e);
+}
+#else
+NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* skip_fraction_digits(const unsigned char* p, const unsigned char* e) noexcept
+{
+    return skip_digits(p, e);
+}
+#endif
+
 /// powers of ten up to 10^19 as integers
 inline std::uint64_t int_pow10(unsigned k) noexcept
 {