New release

Add comma separated value parsing as an option in iterate_many (#2016 )
* Add comma separated value parsing * Fix failing tests * Make tests work for exceptions * Fix test * Fix try catch making test fail --------- Co-authored-by: Yong Xiang Ng <yxng@drwholdings.com>
2026-06-08 17:27:07 +00:00 · 2023-06-15 09:21:07 -04:00 · 2023-06-15 09:11:14 -04:00 · 2023-06-15 09:10:13 -04:00 · 2023-06-07 09:57:28 -04:00 · 2023-06-05 09:04:36 -04:00
123 changed files with 4136 additions and 1208 deletions
@@ -12,24 +12,26 @@ Before submitting an issue, please ensure that you have read the documentation:
 * Basics is an overview of how to use simdjson and its APIs: https://github.com/simdjson/simdjson/blob/master/doc/basics.md
 * Performance shows some more advanced scenarios and how to tune for them: https://github.com/simdjson/simdjson/blob/master/doc/performance.md
 * Contributing: https://github.com/simdjson/simdjson/blob/master/CONTRIBUTING.md
-* We follow the [JSON specification as described by RFC 8259](https://www.rfc-editor.org/rfc/rfc8259.txt) (T. Bray, 2017).
+* We follow the [JSON specification as described by RFC 8259](https://www.rfc-editor.org/rfc/rfc8259.txt) (T. Bray, 2017). If you wish to support features that are not part of RFC 8259, then you should not refer to your issue as a bug.


 **Describe the bug**
-A clear and concise description of what the bug is.
+A clear and concise description of what the bug is. A bug is a failure to build with normal compiler settings or a misbehaviour: when running the code, you get a result that differs from the expected result from our documentation.

-A compiler or static-analyzer warning is not a bug.
+A compiler or static-analyzer warning is not a bug. It is possible with tools such as Visual Studio to require that rarely enabled warnings are considered errors. Do not report such cases as bugs. We do accept pull requests if you want to silence warnings issued by code analyzers, however.

 We are committed to providing good documentation. We accept the lack of documentation or a misleading documentation as a bug (a 'documentation bug').

+An unexpected poor software performance can be accepted as a bug (a 'performance bug').
+
 We accept the identification of an issue by a sanitizer or some checker tool (e.g., valgrind) as a bug, but you must first ensure that it is not a false positive.

-We recommend that you run your tests using different optimization levels.
+We recommend that you run your tests using different optimization levels. In particular, we recommend your run tests with the simdjson library and you code compiled in debug mode. The simdjson then sets the SIMDJSON_DEVELOPMENT_CHECKS macro to 1, and this triggers additional checks on your code and on the internals of the library. If possible, we recommend that you run tests with sanitizers (e.g., see [No more leaks with sanitize flags in gcc and clang](https://lemire.me/blog/2016/04/20/no-more-leaks-with-sanitize-flags-in-gcc-and-clang/)).  You can compile the library with sanitizers for debugging purposes (e.g., set SIMDJSON_SANITIZE to ON using CMake), but you should also turn on sanitizers on your own code. You may also use tools like valgrind or the commercial equivalent.

 Before reporting a bug, please ensure that you have read our documentation.

 **To Reproduce**
-Steps to reproduce the behaviour: provide a code sample if possible.
+Steps to reproduce the behaviour: provide a code sample if possible. Please provide a complete test with data. Remember that a bug is either a failure to build or an unexpected result when running the code.

 If we cannot reproduce the issue, then we cannot address it. Note that a stack trace from your own program is not enough. A sample of your source code is insufficient: please provide a complete test for us to reproduce the issue. Please reduce the issue: use as small and as simple an example of the bug as possible.

@@ -51,6 +53,6 @@ We support up-to-date 64-bit ARM and x64 FreeBSD, macOS, Windows and Linux syste

 **Indicate whether you are willing or able to provide a bug fix as a pull request**

-If you plan to contribute to simdjson, please read our
+If you plan to contribute to simdjson, please read our guide:
 * CONTRIBUTING guide: https://github.com/simdjson/simdjson/blob/master/CONTRIBUTING.md and our
 * HACKING guide: https://github.com/simdjson/simdjson/blob/master/HACKING.md
@@ -0,0 +1,34 @@
+name: Doxygen GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pages: write
+  id-token: write
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Doxygen
+        run: sudo apt-get install doxygen graphviz -y
+      - run: mkdir docs
+      - name: Install theme
+        run: ./tools/prepare_doxygen.sh
+      - name: Generate Doxygen Documentation
+        run: doxygen
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: doc/api/html
@@ -0,0 +1,29 @@
+name: Ubuntu ppc64le (GCC 11)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: uraimo/run-on-arch-action@v2
+        name: Test
+        id: runcmd
+        with:
+          arch: ppc64le
+          distro: ubuntu_latest
+          githubToken: ${{ github.token }}
+          install: |
+            apt-get update -q -y
+            apt-get install -y cmake make g++
+          run: |
+            cmake -DCMAKE_BUILD_TYPE=Release -B build
+            cmake --build build -j=2
+            ctest --output-on-failure --test-dir build
@@ -0,0 +1,29 @@
+name: Ubuntu s390x (GCC 11)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: uraimo/run-on-arch-action@v2
+        name: Test
+        id: runcmd
+        with:
+          arch: s390x
+          distro: ubuntu_latest
+          githubToken: ${{ github.token }}
+          install: |
+            apt-get update -q -y
+            apt-get install -y cmake make g++
+          run: |
+            cmake -DCMAKE_BUILD_TYPE=Release -B build
+            cmake --build build -j=2
+            ctest --output-on-failure --test-dir build
@@ -1,29 +0,0 @@
-name: Performance check on Ubuntu 18.04 CI (GCC 7)
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
-
-jobs:
-  ubuntu-build:
-    if: >-
-      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
-      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
-    runs-on: ubuntu-18.04
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: dependencies/.cache
-          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: Use cmake
-        run: |
-          mkdir build &&
-          cd build &&
-          cmake  -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_ENABLE_DOM_CHECKPERF=ON -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
-          cmake --build . --target checkperf  &&
-          ctest --output-on-failure -R checkperf  ubuntu18-checkperf.yml
@@ -1,25 +0,0 @@
-name: Ubuntu 18.04 CI (GCC 7) with Thread Sanitizer
-
-on: [push, pull_request]
-
-
-jobs:
-  ubuntu-build:
-    if: >-
-      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
-      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
-    runs-on: ubuntu-18.04
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: dependencies/.cache
-          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: Use cmake
-        run: |
-          mkdir build &&
-          cd build &&
-          cmake  -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_SANITIZE_THREADS=ON ..  &&
-          cmake --build . --target document_stream_tests --target ondemand_document_stream_tests --target parse_many_test  &&
-          ctest --output-on-failure  -R parse_many_test  &&
-          ctest --output-on-failure  -R document_stream_tests
@@ -1,25 +0,0 @@
-name: Ubuntu 18.04 CI (GCC 7)
-
-on: [push, pull_request]
-
-jobs:
-  ubuntu-build:
-    if: >-
-      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
-      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
-    runs-on: ubuntu-18.04
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: dependencies/.cache
-          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: Use cmake
-        run: |
-          mkdir build &&
-          cd build &&
-          cmake  -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
-          cmake --build .   &&
-          ctest -j --output-on-failure -LE explicitonly   &&
-          make install  &&
-          echo -e '#include <simdjson.h>\nint main(int argc,char**argv) {simdjson::dom::parser parser;simdjson::dom::element tweets = parser.load(argv[1]); }' > tmp.cpp && c++ -Idestination/include -Ldestination/lib -std=c++17 -Wl,-rpath,destination/lib -o linkandrun tmp.cpp -lsimdjson && ./linkandrun jsonexamples/twitter.json
@@ -14,10 +14,17 @@ jobs:
        with:
          path: dependencies/.cache
          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: Use cmake
+      - name: Use cmake with address sanitizer
        run: |
          mkdir builddebug &&
          cd builddebug &&
          cmake -DSIMDJSON_SANITIZE=ON -DCMAKE_BUILD_TYPE=Debug -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_DEVELOPER_MODE=ON -DBUILD_SHARED_LIBS=OFF ..  &&
          cmake --build .   &&
-          ctest -j --output-on-failure -LE explicitonly
+          ctest -j --output-on-failure -LE explicitonly
+      - name: Use cmake with undefined sanitizer
+        run: |
+          mkdir builddebugundefsani &&
+          cd builddebugundefsani &&
+          cmake -DSIMDJSON_SANITIZE_UNDEFINED=ON -DCMAKE_BUILD_TYPE=Debug -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_DEVELOPER_MODE=ON -DBUILD_SHARED_LIBS=OFF ..  &&
+          cmake --build .   &&
+          ctest -j --output-on-failure -LE explicitonly
@@ -0,0 +1,33 @@
+name: Ubuntu 22.04 CI (GCC 12, CXX 20)
+
+on: [push, pull_request]
+
+jobs:
+  ubuntu-build:
+    if: >-
+      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
+      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: dependencies/.cache
+          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
+      - name: Use cmake
+        run: |
+          mkdir builddebug &&
+          cd builddebug &&
+          CXX=g++-12 cmake -DSIMDJSON_CXX_STANDARD=20 -DCMAKE_BUILD_TYPE=Debug -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_DEVELOPER_MODE=ON -DBUILD_SHARED_LIBS=OFF ..  &&
+          cmake --build .   &&
+          ctest -j --output-on-failure -LE explicitonly   &&
+          cd .. &&
+          mkdir build &&
+          cd build &&
+          CXX=g++-12 cmake -DSIMDJSON_CXX_STANDARD=20  -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DSIMDJSON_DEVELOPER_MODE=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
+          cmake --build .   &&
+          ctest -j --output-on-failure -LE explicitonly   &&
+          cmake --install . &&
+          echo -e '#include <simdjson.h>\nint main(int argc,char**argv) {simdjson::dom::parser parser;simdjson::dom::element tweets = parser.load(argv[1]); }' > tmp.cpp && c++ -Idestination/include -Ldestination/lib -std=c++17 -Wl,-rpath,destination/lib -o linkandrun tmp.cpp -lsimdjson && ./linkandrun jsonexamples/twitter.json &&
+          cd ../tests/installation_tests/find &&
+          mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX:PATH=../../../build/destination .. &&  cmake --build .
@@ -1,5 +1,4 @@
-name: Ubuntu 18.04 CI (LLVM 7)
-
+name: Ubuntu 22.04 CI GCC 12 with GLIBCXX_ASSERTIONS
 on: [push, pull_request]

 jobs:
@@ -7,25 +6,19 @@ jobs:
    if: >-
      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
-    runs-on: ubuntu-18.04
-
-    env:
-      CC: clang-7
-      CXX: clang++-7
+    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v3
      - uses: actions/cache@v3
        with:
          path: dependencies/.cache
          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: install clang 7
-        run: |
-          sudo apt update
-          sudo apt install clang-7
+      - name: Install gcc12
+        run: sudo apt-get install -y g++-12
      - name: Use cmake
        run: |
          mkdir build &&
          cd build &&
-          cmake  -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
+          CXX=g++-12 cmake -DCMAKE_BUILD_TYPE=Debug  -DSIMDJSON_GLIBCXX_ASSERTIONS=ON -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_DEVELOPER_MODE=ON ..  &&
          cmake --build .   &&
-          ctest -j --output-on-failure -LE explicitonly
+          ctest . -E avoid_
@@ -0,0 +1,44 @@
+name: VS17-CI CXX20
+
+on: [push, pull_request]
+
+jobs:
+  ci:
+    if: >-
+      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
+      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
+    name: windows-vs17
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - {gen: Visual Studio 17 2022, arch: Win32, shared: ON}
+          - {gen: Visual Studio 17 2022, arch: Win32, shared: OFF}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: ON}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: OFF}
+    steps:
+    - name: checkout
+      uses: actions/checkout@v2
+    - name: Configure
+      run: |
+        cmake -DSIMDJSON_CXX_STANDARD=20 -G "${{matrix.gen}}" -A ${{matrix.arch}} -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_COMPETITION=OFF -DBUILD_SHARED_LIBS=${{matrix.shared}} -B build
+    - name: Build Debug
+      run: cmake --build build --config Debug --verbose
+    - name: Build Release
+      run: cmake --build build --config Release --verbose
+    - name: Run Release tests
+      run: |
+        cd build
+        ctest -C Release  -LE explicitonly  --output-on-failure
+    - name: Run Debug tests
+      run: |
+        cd build
+        ctest -C Debug  -LE explicitonly  --output-on-failure
+    - name: Install
+      run: |
+        cmake --install build --config Release
+    - name: Test Installation
+      run: |
+        cmake -G "${{matrix.gen}}" -A ${{matrix.arch}}  -B build_install_test tests/installation_tests/find
+        cmake --build build_install_test --config Release
@@ -96,6 +96,7 @@
        "future": "cpp",
        "queue": "cpp",
        "shared_mutex": "cpp",
-        "ranges": "cpp"
+        "ranges": "cpp",
+        "span": "cpp"
    }
 }
@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.14)
 project(
    simdjson
    # The version number is modified by tools/release.py
-    VERSION 3.1.0
+    VERSION 3.2.0
    DESCRIPTION "Parsing gigabytes of JSON per second"
    HOMEPAGE_URL "https://simdjson.org/"
    LANGUAGES CXX C
@@ -20,8 +20,8 @@ string(
 # ---- Options, variables ----

 # These version numbers are modified by tools/release.py
-set(SIMDJSON_LIB_VERSION "15.0.0" CACHE STRING "simdjson library version")
-set(SIMDJSON_LIB_SOVERSION "15" CACHE STRING "simdjson library soversion")
+set(SIMDJSON_LIB_VERSION "16.0.0" CACHE STRING "simdjson library version")
+set(SIMDJSON_LIB_SOVERSION "16" CACHE STRING "simdjson library soversion")

 option(SIMDJSON_ENABLE_THREADS "Link with thread support" ON)

@@ -95,6 +95,21 @@ if(
  )
 endif()

+# GCC and Clang have horrendous Debug builds when using SIMD.
+# A common fix is to use '-Og' instead.
+# bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412
+if(
+    (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR
+        CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR
+        CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+)
+  message(STATUS "Adding -Og to compile flag")
+  simdjson_add_props(
+      target_compile_options PRIVATE
+      $<$<CONFIG:DEBUG>:-Og>
+  )
+endif()
+
 if(SIMDJSON_ENABLE_THREADS)
  find_package(Threads REQUIRED)
  simdjson_add_props(target_link_libraries PUBLIC Threads::Threads)
@@ -149,7 +164,7 @@ install(
    EXPORT simdjsonTargets
    NAMESPACE simdjson::
    DESTINATION "${SIMDJSON_INSTALL_CMAKEDIR}"
-    COMPONENT example_Development
+    COMPONENT simdjson_Development
 )

 # pkg-config
@@ -188,11 +203,14 @@ endif()

 # ---- Developer mode extras ----

+if(is_top_project AND NOT SIMDJSON_DEVELOPER_MODE)
+  message(STATUS "Building only the library. Advanced users and contributors may want to turn SIMDJSON_DEVELOPER_MODE to ON, e.g., via -D SIMDJSON_DEVELOPER_MODE=ON.")
+elseif(SIMDJSON_DEVELOPER_MODE AND NOT is_top_project)
+  message(AUTHOR_WARNING "Developer mode in simdjson is intended for the developers of simdjson")
+endif()
+
 if(NOT SIMDJSON_DEVELOPER_MODE)
-  message(STATUS "Building only the library. Advanced users may want to turn SIMDJSON_DEVELOPER_MODE to ON, e.g., via -D SIMDJSON_DEVELOPER_MODE=ON.")
  return()
-elseif(NOT is_top_project)
-  message(AUTHOR_WARNING "Developer mode is intended for developers of simdjson")
 endif()

 simdjson_apply_props(simdjson-internal-flags)
@@ -233,7 +251,9 @@ add_subdirectory(singleheader)
 #
 add_subdirectory(tests)
 add_subdirectory(examples)
-add_subdirectory(benchmark)
+if(CMAKE_SIZEOF_VOID_P EQUAL 8) # we only include the benchmarks on 64-bit systems.
+  add_subdirectory(benchmark)
+endif()
 add_subdirectory(fuzz)

 #
@@ -38,7 +38,7 @@ PROJECT_NAME           = simdjson
 # could be handy for archiving the generated documentation or if some version
 # control system is used.

-PROJECT_NUMBER         = "3.1.0"
+PROJECT_NUMBER         = "3.2.0"

 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -829,7 +829,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.

-INPUT                  = doc include
+INPUT                  = doc include/simdjson include/simdjson/dom include/simdjson/generic

 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -1246,7 +1246,10 @@ HTML_STYLESHEET        =
 # list). For an example see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.

-HTML_EXTRA_STYLESHEET  =
+
+HTML_EXTRA_STYLESHEET  = theme/doxygen-awesome.css \
+                         theme/doxygen-awesome-sidebar-only.css \
+                         theme/doxygen-awesome-sidebar-only-darkmode-toggle.css

 # The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the HTML output directory. Note
@@ -1256,7 +1259,10 @@ HTML_EXTRA_STYLESHEET  =
 # files will be copied as-is; there are no commands or markers available.
 # This tag requires that the tag GENERATE_HTML is set to YES.

-HTML_EXTRA_FILES       =
+HTML_EXTRA_FILES       = theme/doxygen-awesome-darkmode-toggle.js \
+                         theme/doxygen-awesome-interactive-toc.js \
+                         theme/doxygen-awesome-fragment-copy-button.js \
+                         theme/doxygen-awesome-paragraph-link.js

 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
@@ -1543,7 +1549,7 @@ DISABLE_INDEX          = NO
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.

-GENERATE_TREEVIEW      = NO
+GENERATE_TREEVIEW      = YES

 # The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
 # doxygen will group on one line in the generated HTML documentation.
@@ -1,3 +1,4 @@
+
 Hacking simdjson
 ================

@@ -6,6 +7,16 @@ Here is wisdom about how to build, test and run simdjson from within the reposit
 If you plan to contribute to simdjson, please read our [CONTRIBUTING](https://github.com/simdjson/simdjson/blob/master/CONTRIBUTING.md) guide.


+  - [Design notes](#design-notes)
+  - [Developer mode](#developer-mode)
+  - [Directory Structure and Source](#directory-structure-and-source)
+  - [Runtime Dispatching](#runtime-dispatching)
+  - [Regenerating Single-Header Files](#regenerating-single-header-files)
+  - [Usage (CMake on 64-bit platforms like Linux, FreeBSD or macOS)](#usage-cmake-on-64-bit-platforms-like-linux-freebsd-or-macos)
+  - [Usage (CMake on 64-bit Windows using Visual Studio 2019)](#usage-cmake-on-64-bit-windows-using-visual-studio-2019)
+  - [Various References](#various-references)
+
+
 Design notes
 ------------------------------

@@ -193,7 +204,7 @@ point it gets included (but only once per header). singleheader/simdjson.cpp is
 src/simdjson.cpp the same way, except files under generic/ may be included and copy/pasted multiple
 times.

-### Usage (CMake on 64-bit platforms like Linux, FreeBSD or macOS)
+## Usage (CMake on 64-bit platforms like Linux, FreeBSD or macOS)

 Requirements: In addition to git, we require a recent version of CMake as well as bash.

@@ -256,7 +267,9 @@ Note that the name of directory (`build`) is arbitrary, you can name it as you w



-### Usage (CMake on 64-bit Windows using Visual Studio 2019)
+## Usage (CMake on 64-bit Windows using Visual Studio 2019 or better)
+
+Recent versions of Visual Studio support CMake natively, [please refer to the Visual Studio documentation](https://learn.microsoft.com/en-us/cpp/build/cmake-projects-in-visual-studio?view=msvc-170).

 We assume you have a common 64-bit Windows PC with at least Visual Studio 2019.

@@ -285,7 +298,7 @@ Furthermore, if you have installed LLVM clang on Windows, for example as a compo
 - `cmake --build . -config Release`


-### Various References
+## Various References

 - [How to implement atoi using SIMD?](https://stackoverflow.com/questions/35127060/how-to-implement-atoi-using-simd)
 - [Parsing JSON is a Minefield 💣](http://seriot.ch/parsing_json.php)
@@ -1,9 +1,11 @@

-![Ubuntu 18.04 CI](https://github.com/simdjson/simdjson/workflows/Ubuntu%2018.04%20CI%20(GCC%207)/badge.svg)
 [![Ubuntu 20.04 CI](https://github.com/simdjson/simdjson/workflows/Ubuntu%2020.04%20CI%20(GCC%209)/badge.svg)](https://simdjson.org/plots.html)
 ![VS16-CI](https://github.com/simdjson/simdjson/workflows/VS16-CI/badge.svg)
+[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/simdjson.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:simdjson)
 ![MinGW64-CI](https://github.com/simdjson/simdjson/workflows/MinGW64-CI/badge.svg)
-[![][license img]][license]  [![Doxygen Documentation](https://img.shields.io/badge/docs-doxygen-green.svg)](https://simdjson.org/api/3.0.0/index.html)
+[![][license img]][license]
+
+[![Doxygen Documentation](https://img.shields.io/badge/docs-doxygen-green.svg)](https://simdjson.github.io/simdjson/)

 simdjson : Parsing gigabytes of JSON per second
 ===============================================
@@ -26,16 +28,38 @@ This library is part of the [Awesome Modern C++](https://awesomecpp.com) list.
 Table of Contents
 -----------------

+* [Real-world usage](#real-world-usage)
 * [Quick Start](#quick-start)
 * [Documentation](#documentation)
 * [Performance results](#performance-results)
-* [Real-world usage](#real-world-usage)
 * [Bindings and Ports of simdjson](#bindings-and-ports-of-simdjson)
 * [About simdjson](#about-simdjson)
 * [Funding](#funding)
 * [Contributing to simdjson](#contributing-to-simdjson)
 * [License](#license)

+
+Real-world usage
+----------------
+
+- [ClickHouse](https://github.com/ClickHouse/ClickHouse)
+- [Facebook/Meta Velox](https://velox-lib.io)
+- [milvus](https://github.com/milvus-io/milvus)
+- [Clang Build Analyzer](https://github.com/aras-p/ClangBuildAnalyzer)
+- [Shopify HeapProfiler](https://github.com/Shopify/heap-profiler)
+- [StarRocks](https://github.com/StarRocks/starrocks)
+- [Microsoft FishStore](https://github.com/microsoft/FishStore)
+- [Intel PCM](https://github.com/intel/pcm)
+- [WatermelonDB](https://github.com/Nozbe/WatermelonDB)
+- [Apache Doris](https://github.com/apache/doris)
+- [Dgraph](https://github.com/dgraph-io/dgraph)
+- [UJRPC](https://github.com/unum-cloud/ujrpc)
+- [fastgltf](https://github.com/spnda/fastgltf)
+- [vast](https://github.com/tenzir/vast)
+- [ada-url](https://github.com/ada-url/ada)
+
+If you are planning to use simdjson in a product, please work from one of our releases.
+
 Quick Start
 -----------

@@ -62,13 +86,13 @@ int main(void) {
    ondemand::document tweets = parser.iterate(json);
    std::cout << uint64_t(tweets["search_metadata"]["count"]) << " results." << std::endl;
 }
-
-   ```
+```
 3. `c++ -o quickstart quickstart.cpp simdjson.cpp`
 4. `./quickstart`
-   ```
+
+  ```
   100 results.
-   ```
+  ```

 Documentation
 -------------
@@ -79,7 +103,13 @@ Usage documentation is available:
 * [Performance](doc/performance.md) shows some more advanced scenarios and how to tune for them.
 * [Implementation Selection](doc/implementation-selection.md) describes runtime CPU detection and
  how you can work with it.
-* [API](https://simdjson.org/api/1.0.0/annotated.html) contains the automatically generated API documentation.
+* [API](https://simdjson.github.io/simdjson/) contains the automatically generated API documentation.
+
+
+Some users may want to browse code along with the compiled assembly. You want to check out the following lists of examples:
+
+* [simdjson examples with errors handled through exceptions](https://godbolt.org/z/98Kx9Kqjn)
+* [simdjson examples with errors without exceptions](https://godbolt.org/z/PKG7GdbPo)

 Performance results
 -------------------
@@ -108,21 +138,6 @@ For NDJSON files, we can exceed 3 GB/s with [our  multithreaded parsing function



-Real-world usage
----------------
-
- [ClickHouse](https://github.com/ClickHouse/ClickHouse)
- [Clang Build Analyzer](https://github.com/aras-p/ClangBuildAnalyzer)
- [Shopify HeapProfiler](https://github.com/Shopify/heap-profiler)
- [StarRocks](https://github.com/StarRocks/starrocks)
- [Microsoft FishStore](https://github.com/microsoft/FishStore)
- [Intel PCM](https://github.com/intel/pcm)
- [WatermelonDB](https://github.com/Nozbe/WatermelonDB)
- [Apache Doris](https://github.com/apache/doris)
- [Dgraph](https://github.com/dgraph-io/dgraph)
-
-
-If you are planning to use simdjson in a product, please work from one of our releases.

 Bindings and Ports of simdjson
 ------------------------------
@@ -143,9 +158,12 @@ We distinguish between "bindings" (which just wrap the C++ code) and a port to a
 - [simdjson-go](https://github.com/minio/simdjson-go): Go port using Golang assembly.
 - [rcppsimdjson](https://github.com/eddelbuettel/rcppsimdjson): R bindings.
 - [simdjson_erlang](https://github.com/ChomperT/simdjson_erlang): erlang bindings.
+- [simdjsone](https://github.com/saleyn/simdjsone): erlang bindings.
 - [lua-simdjson](https://github.com/FourierTransformer/lua-simdjson): lua bindings.
 - [hermes-json](https://hackage.haskell.org/package/hermes-json): haskell bindings.
 - [simdjzon](https://github.com/travisstaloch/simdjzon): zig port.
+- [JSON-Simd](https://github.com/rawleyfowler/JSON-simd): Raku bindings.
+- [JSON::SIMD](https://metacpan.org/pod/JSON::SIMD): Perl bindings; fully-featured JSON module that uses simdjson for decoding.

 About simdjson
 --------------
@@ -188,7 +206,7 @@ License

 This code is made available under the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0.html).

-Under Windows, we build some tools using the windows/dirent_portable.h file (which is outside our library code): it under the liberal (business-friendly) MIT license.
+Under Windows, we build some tools using the windows/dirent_portable.h file (which is outside our library code): it is under the liberal (business-friendly) MIT license.

 For compilers that do not support [C++17](https://en.wikipedia.org/wiki/C%2B%2B17), we bundle the string-view library which is published under the [Boost license](http://www.boost.org/LICENSE_1_0.txt). Like the Apache license, the Boost license is a permissive license allowing commercial redistribution.

@@ -1,69 +0,0 @@
-# 0.5
-
-## Highlights
-
-Performance
-* Faster and simpler UTF-8 validation with the lookup4 algorithm https://github.com/simdjson/simdjson/pull/993
-* We improved the performance of simdjson under Visual Studio by about 25%. Users will still get better performance with clang-cl (+30%) but the gap has been reduced. https://github.com/simdjson/simdjson/pull/1031
-
-Code usability
-* In `parse_many`, when parsing streams of JSON documetns, we give to the users runtime control as to whether threads are used (via the parser.threaded attribute). https://github.com/simdjson/simdjson/issues/925
-* Prefixed public macros to avoid name clashes with other libraries. https://github.com/simdjson/simdjson/issues/1035
-* Better documentation regarding package managers (brew, MSYS2, conan, apt, vcpkg, FreeBSD package manager, etc.).
-* Better documentation regarding  CMake usage.
-
-Standards
-* We improved standard compliance with respect to both the JSON RFC 8259 and JSON Pointer RFC 6901. We added the at_pointer method to nodes for standard-compliant JSON Pointer queries. The legacy `at(std::string_view)` method remains but is deprecated since it is not standard-compliant as per  RFC 6901.
-* We removed computed GOTOs without sacrificing performance thus improving the C++ standard compliance (since computed GOTOs are compiler-specific extensions).
-* Better support for C++20 https://github.com/simdjson/simdjson/pull/1050
-
-# 0.4
-
-## Highlights
-
- Test coverage has been greatly improved and we have resolved many static-analysis warnings on different systems.
- We added a fast (8GB/s) minifier that works directly on JSON strings.
- We added fast (10GB/s) UTF-8 validator that works directly on strings (any strings, including non-JSON).
- The array and object elements have a constant-time size() method.
- Performance improvements to the API (type(), get<>()).
- The parse_many function (ndjson) has been entirely reworked. It now uses a single secondary thread instead of several new threads.
- We have introduced a faster UTF-8 validation algorithm (lookup3) for all kernels (ARM, x64 SSE, x64 AVX).
- C++11 support for older compilers and systems.
- FreeBSD support (and tests).
- We support the clang front-end compiler (clangcl) under Visual Studio.
- It is now possible to target ARM platforms under Visual Studio.
- The simdjson library will never abort or print to standard output/error.
-
-# 0.3
-
-## Highlights
-
- **Multi-Document Parsing:** Read a bundle of JSON documents (ndjson) 2-4x faster than doing it
-  individually. [API docs](https://github.com/simdjson/simdjson/blob/master/doc/basics.md#newline-delimited-json-ndjson-and-json-lines) / [Design Details](https://github.com/simdjson/simdjson/blob/master/doc/parse_many.md)
- **Simplified API:** The API has been completely revamped for ease of use, including a new JSON
-  navigation API and fluent support for error code *and* exception styles of error handling with a
-  single API. [Docs](https://github.com/simdjson/simdjson/blob/master/doc/basics.md#the-basics-loading-and-parsing-json-documents)
- **Exact Float Parsing:** Now simdjson parses floats flawlessly *without* any performance loss,
-  thanks to [great work by @michaeleisel and @lemire](https://github.com/simdjson/simdjson/pull/558).
-  [Blog Post](https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/)
- **Even Faster:** The fastest parser got faster! With a [shiny new UTF-8 validator](https://github.com/simdjson/simdjson/pull/387)
-  and meticulously refactored SIMD core, simdjson 0.3 is 15% faster than before, running at 2.5 GB/s
-  (where 0.2 ran at 2.2 GB/s).
-
-## Minor Highlights
-
- Fallback implementation: simdjson now has a non-SIMD fallback implementation, and can run even on
-  very old 64-bit machines.
- Automatic allocation: as part of API simplification, the parser no longer has to be preallocated--
-  it will adjust automatically when it encounters larger files.
- Runtime selection API: We've exposed simdjson's runtime CPU detection and implementation selection
-  as an API, so you can tell what implementation we detected and test with other implementations.
- Error handling your way: Whether you use exceptions or check error codes, simdjson lets you handle
-  errors in your style. APIs that can fail return simdjson_result<T>, letting you check the error
-  code before using the result. But if you are more comfortable with exceptions, skip the error code
-  and cast straight to T, and exceptions will be thrown automatically if an error happens. Use the
-  same API either way!
- Error chaining: We also worked to keep non-exception error-handling short and sweet. Instead of
-  having to check the error code after every single operation, now you can *chain* JSON navigation
-  calls like looking up an object field or array element, or casting to a string, so that you only
-  have to check the error code once at the very end.
@@ -521,7 +521,7 @@ static void twitter_image_sizes(State& state) {
    set<tuple<uint64_t, uint64_t>> image_sizes;
    for (dom::object tweet : doc["statuses"]) {
      dom::array media;
-      if (not (error = tweet["entities"]["media"].get(media))) {
+      if (! (error = tweet["entities"]["media"].get(media))) {
        for (dom::object image : media) {
          for (auto size : image["sizes"].get_object()) {
             image_sizes.emplace(size.value["w"], size.value["h"]);
@@ -564,7 +564,7 @@ static void error_code_twitter_default_profile(State& state) noexcept {
    for (dom::element tweet : tweets) {
      dom::object user;
      if ((error = tweet["user"].get(user))) { return; }
-      bool default_profile;
+      bool default_profile{};
      if ((error = user["default_profile"].get(default_profile))) { return; }
      if (default_profile) {
        std::string_view screen_name;
@@ -638,7 +638,7 @@ static void error_code_twitter_image_sizes(State& state) noexcept {
    if ((error = doc["statuses"].get(statuses))) { return; }
    for (dom::element tweet : statuses) {
      dom::array images;
-      if (not (error = tweet["entities"]["media"].get(images))) {
+      if (! (error = tweet["entities"]["media"].get(images))) {
        for (dom::element image : images) {
          dom::object sizes;
          if ((error = image["sizes"].get(sizes))) { return; }
@@ -520,7 +520,7 @@ struct benchmarker {
        double freqall = (all_stages_without_allocation.best.cycles() / all_stages_without_allocation.best.elapsed_sec()) / 1000000000.0;
        double freqmin = min(freq1, freq2);
        double freqmax = max(freq1, freq2);
-        if((freqall < 0.95 * freqmin) or (freqall > 1.05 * freqmax)) {
+        if((freqall < 0.95 * freqmin) || (freqall > 1.05 * freqmax)) {
          printf("\nWarning: The processor frequency fluctuates in an expected way!!!\n"
          "Range for stage 1 and stage 2 : [%.3f GHz, %.3f GHz], overall: %.3f GHz.\n",
          freqmin, freqmax, freqall);
@@ -134,7 +134,7 @@ struct event_collector {

 #if defined(__linux__)
  LinuxEvents<PERF_TYPE_HARDWARE> linux_events;
-  event_collector(bool quiet = false) : linux_events(vector<int>{
+  event_collector(simdjson_unused bool quiet = false) : linux_events(vector<int>{
  #if SIMDJSON_SIMPLE_PERFORMANCE_COUNTERS
    PERF_COUNT_HW_CPU_CYCLES,
    PERF_COUNT_HW_INSTRUCTIONS,
@@ -145,7 +145,7 @@ struct event_collector {
    PERF_COUNT_HW_CACHE_REFERENCES,
    PERF_COUNT_HW_CACHE_MISSES
  #endif
-  }, quiet) {}
+  }) {}
  bool has_events() {
    return linux_events.is_working();
  }
@@ -100,9 +100,8 @@ simdjson2msgpack::to_msgpack(const simdjson::padded_string &json,
    recursive_processor_ref(val);
 #endif
  }
-  if (doc.current_location().error() == simdjson::SUCCESS) {
-    // Example of error detection - this won't be reached on twitter.json in the benchmark.
-    throw "There are unexpectedly tokens after the end of the json in the json2msgpack sample data";
+  if (!doc.at_end()) {
+     throw "There are unexpectedly tokens after the end of the json in the json2msgpack sample data";
  }
  return std::string_view(reinterpret_cast<char *>(buf), size_t(buff - buf));
 }
@@ -1,22 +1,13 @@
-// https://github.com/WojciechMula/toys/blob/master/000helpers/linux-perf-events.h
 #pragma once
 #ifdef __linux__
-#ifdef __has_include
-#if __has_include(<asm/unistd.h>)
+
 #include <asm/unistd.h>       // for __NR_perf_event_open
-#else
-#warning "Header asm/unistd.h cannot be found though it is a linux system. Are linux headers missing?"
-#endif
-#else // no __has_include
-// Please insure that linux headers have been installed.
-#include <asm/unistd.h>       // for __NR_perf_event_open
-#endif
 #include <linux/perf_event.h> // for perf event constants
 #include <sys/ioctl.h>        // for ioctl
 #include <unistd.h>           // for syscall

 #include <cerrno>  // for errno
-#include <cstring> // for std::memset
+#include <cstring> // for memset
 #include <stdexcept>

 #include <iostream>
@@ -28,13 +19,11 @@ template <int TYPE = PERF_TYPE_HARDWARE> class LinuxEvents {
  perf_event_attr attribs{};
  size_t num_events{};
  std::vector<uint64_t> temp_result_vec{};
-  std::vector<uint64_t> result{};
-  std::vector<int> fds{};
-  bool quiet;
+  std::vector<uint64_t> ids{};

 public:
-  explicit LinuxEvents(std::vector<int> config_vec, bool _quiet=false) : fd(0), working(true), quiet{_quiet} {
-    std::memset(&attribs, 0, sizeof(attribs));
+  explicit LinuxEvents(std::vector<int> config_vec) : fd(0), working(true) {
+    memset(&attribs, 0, sizeof(attribs));
    attribs.type = TYPE;
    attribs.size = sizeof(attribs);
    attribs.disabled = 1;
@@ -49,7 +38,7 @@ public:

    int group = -1; // no group
    num_events = config_vec.size();
-    result.resize(config_vec.size());
+    ids.resize(config_vec.size());
    uint32_t i = 0;
    for (auto config : config_vec) {
      attribs.config = config;
@@ -57,22 +46,17 @@ public:
      if (_fd == -1) {
        report_error("perf_event_open");
      }
-      fd = _fd; // fd tracks the last _fd value.
-      fds.push_back(fd);
-      ioctl(fd, PERF_EVENT_IOC_ID, &result[i++]);
+      ioctl(_fd, PERF_EVENT_IOC_ID, &ids[i++]);
      if (group == -1) {
-        group = fd;
+        group = _fd;
+        fd = _fd;
      }
    }

    temp_result_vec.resize(num_events * 2 + 1);
  }

-  ~LinuxEvents() {
-   for (auto tfd : fds) {
-      if (tfd != -1) { close(tfd); }
-    }
-  }
+  ~LinuxEvents() { if (fd != -1) { close(fd); } }

  inline void start() {
    if (fd != -1) {
@@ -97,10 +81,16 @@ public:
      }
    }
    // our actual results are in slots 1,3,5, ... of this structure
-    // we really should be checking our result obtained earlier to be safe
    for (uint32_t i = 1; i < temp_result_vec.size(); i += 2) {
      results[i / 2] = temp_result_vec[i];
    }
+    for (uint32_t i = 2; i < temp_result_vec.size(); i += 2) {
+      if(ids[i/2-1] != temp_result_vec[i]) {
+        report_error("event mismatch");
+      }
+    }
+
+
  }

  bool is_working() {
@@ -108,13 +98,8 @@ public:
  }

 private:
-  void report_error(const std::string &context) {
-    if (!quiet) {
-      if (working) {
-        std::cerr << (context + ": " + std::string(strerror(errno))) << std::endl;
-      }
-    }
+  void report_error(const std::string &) {
    working = false;
  }
 };
-#endif
+#endif
@@ -50,6 +50,23 @@ undefined behavior.")
  endif()
 endif()

+option(SIMDJSON_SANITIZE_MEMORY "Sanitize memory" OFF)
+
+
+if(SIMDJSON_SANITIZE_MEMORY)
+  message(STATUS "Setting the memory sanitizer.")
+  add_compile_options(
+      -fsanitize=memory -fno-sanitize-recover=all
+  )
+  link_libraries(
+      -fsanitize=memory -fno-sanitize-recover=all
+  )
+  # Ubuntu bug for GCC 5.0+ (safe for all versions)
+  if(CMAKE_COMPILER_IS_GNUCC)
+    link_libraries(-fuse-ld=gold)
+  endif()
+endif()
+
 if(SIMDJSON_SANITIZE_THREADS)
  message(STATUS "Setting both the thread sanitizer \
 and the undefined-behavior sanitizer.")
@@ -73,6 +90,8 @@ if(NOT is_multi_config AND NOT CMAKE_BUILD_TYPE)
  if(SIMDJSON_SANITIZE OR SIMDJSON_SANITIZE_UNDEFINED)
    message(STATUS "No build type selected and you have enabled the sanitizer, \
 default to Debug. Consider setting CMAKE_BUILD_TYPE.")
+    message(STATUS "Setting debug optimization flag to -O1 to help sanitizer.")
+    set(CMAKE_CXX_FLAGS_DEBUG "-O1" CACHE STRING "" FORCE)
    set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
  else()
    message(STATUS "No build type selected, default to Release")
@@ -91,7 +110,8 @@ endif()

 # We compile tools, tests, etc. with C++ 17. Override yourself if you need on a
 # target.
-set(CMAKE_CXX_STANDARD 17)
+set(SIMDJSON_CXX_STANDARD 17 CACHE STRING "the C++ standard to use for simdjson")
+set(CMAKE_CXX_STANDARD ${SIMDJSON_CXX_STANDARD})
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_MACOSX_RPATH OFF)
@@ -144,6 +164,11 @@ else()
  )
 endif()

+option(SIMDJSON_GLIBCXX_ASSERTIONS "Set _GLIBCXX_ASSERTIONS" OFF)
+if (SIMDJSON_GLIBCXX_ASSERTIONS)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_GLIBCXX_ASSERTIONS")
+endif()
+
 #
 # Other optional flags
 #
@@ -187,6 +212,18 @@ else()
  message(STATUS "AVX-512 instructions are not allowed.")
 endif()

+option(
+    SIMDJSON_SKIPUTF8VALIDATION
+    "SKIP UTF8 VALIDATION."
+    OFF
+)
+if(SIMDJSON_SKIPUTF8VALIDATION)
+  add_compile_definitions(SIMDJSON_UTF8VALIDATION=0)
+  message(STATUS "SKIP UTF8 VALIDATION")
+else()
+  add_compile_definitions(SIMDJSON_UTF8VALIDATION=1)
+endif()
+
 include(CheckSymbolExists)
 check_symbol_exists(fork unistd.h HAVE_POSIX_FORK)
 check_symbol_exists(wait sys/wait.h HAVE_POSIX_WAIT)
@@ -15,7 +15,7 @@ if(SIMDJSON_GOOGLE_BENCHMARKS)
  set_off(BENCHMARK_ENABLE_INSTALL)
  set_off(BENCHMARK_ENABLE_WERROR)

-  import_dependency(google_benchmarks google/benchmark d572f47)
+  import_dependency(google_benchmarks google/benchmark v1.7.1)
  add_dependency(google_benchmarks)
 endif()

@@ -94,6 +94,14 @@ int main() {}
  import_dependency(rapidjson Tencent/rapidjson f54b0e4)
  add_library(rapidjson INTERFACE)
  target_compile_definitions(rapidjson INTERFACE RAPIDJSON_HAS_STDSTRING)
+  include (TestBigEndian)
+  TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
+  if(IS_BIG_ENDIAN)
+  target_compile_definitions(rapidjson INTERFACE RAPIDJSON_ENDIAN=1)
+  else()
+  target_compile_definitions(rapidjson INTERFACE RAPIDJSON_ENDIAN=0)
+  endif()
+  target_compile_definitions(rapidjson INTERFACE RAPIDJSON_HAS_STDSTRING)
  target_include_directories(rapidjson SYSTEM INTERFACE
          "${rapidjson_SOURCE_DIR}/include")
  target_compile_definitions(rapidjson INTERFACE SIMDJSON_COMPETITION_RAPIDJSON)
@@ -40,7 +40,7 @@ macro(add_dependency NAME)
    message(FATAL_ERROR "Missing ${NAME}_SOURCE_DIR variable")
  endif()

-  add_subdirectory("${${NAME}_SOURCE_DIR}" "${PROJECT_BINARY_DIR}/_deps/${NAME}")
+  add_subdirectory("${${NAME}_SOURCE_DIR}" "${PROJECT_BINARY_DIR}/_deps/${NAME}" EXCLUDE_FROM_ALL)
 endmacro()

 function(set_off NAME)
@@ -12,7 +12,7 @@ An overview of what you need to know to use simdjson, with examples.
  - [The Basics: Loading and Parsing JSON Documents](#the-basics-loading-and-parsing-json-documents)
  - [Documents are Iterators](#documents-are-iterators)
    - [Parser, Document and JSON Scope](#parser-document-and-json-scope)
-  - [C++11 Support and string_view](#c11-support-and-string_view)
+  - [string_view](#string_view)
  - [Using the Parsed JSON](#using-the-parsed-json)
    - [Using the Parsed JSON: Additional examples](#using-the-parsed-json-additional-examples)
  - [Minifying JSON strings without parsing](#minifying-json-strings-without-parsing)
@@ -23,27 +23,30 @@ An overview of what you need to know to use simdjson, with examples.
    - [Disabling Exceptions](#disabling-exceptions)
    - [Exceptions](#exceptions)
    - [Current location in document](#current-location-in-document)
+    - [Checking for trailing content](#checking-for-trailing-content)
  - [Rewinding](#rewinding)
-  - [Direct Access to the Raw String](#direct-access-to-the-raw-string)
  - [Newline-Delimited JSON (ndjson) and JSON lines](#newline-delimited-json-ndjson-and-json-lines)
  - [Parsing Numbers Inside Strings](#parsing-numbers-inside-strings)
  - [Dynamic Number Types](#dynamic-number-types)
  - [Raw Strings](#raw-strings)
+  - [General Direct Access to the Raw JSON String](#general-direct-access-to-the-raw-json-string)
  - [Thread Safety](#thread-safety)
  - [Standard Compliance](#standard-compliance)
  - [Backwards Compatibility](#backwards-compatibility)
+  - [Examples](#examples)
+  - [Performance Tips](#performance-tips)


 Requirements
 ------------------

 - A recent compiler (LLVM clang 6 or better, GNU GCC 7.4 or better, Xcode 11 or better) on a 64-bit (PPC, ARM or x64 Intel/AMD) POSIX systems such as macOS, freeBSD or Linux. We require that the compiler supports the C++11 standard or better.
- Visual Studio 2017 or better under 64-bit Windows. Users should target a 64-bit build (x64) instead of a 32-bit build (x86). We support the LLVM clang compiler under Visual Studio (clangcl) as well as as the regular Visual Studio compiler. We also support MinGW 64-bit under Windows.
+- Visual Studio 2017 or better under 64-bit Windows. Users should target a 64-bit build (x64 or ARM64) instead of a 32-bit build (x86). We support the LLVM clang compiler under Visual Studio (clangcl) as well as as the regular Visual Studio compiler. We also support MinGW 64-bit under Windows.


-Support for AVX-512 require a processor with AVX512-VBMI2 support (Ice Lake or better) under a 64-bit system and a recent compiler (LLVM clang 6 or better, GCC 8 or better, Visual Studio 2019 or better). You need a correspondingly recent assembler such as gas (2.30+) or nasm (2.14+): recent compilers usually come with recent assemblers. If you mix a recent compiler with an incompatible/old assembler (e.g., when using a recent compiler with an old Linux distribution), you may get errors at build time because the compiler produces instructions that the assembler does not recognize: you should update your assembler to match your compiler (e.g., upgrade binutils to version 2.30 or better under Linux) or use an older compiler matching the capabilities of your assembler.
+Support for AVX-512 require a processor with AVX512-VBMI2 support (Ice Lake or better, AMD Zen 4 or better) under a 64-bit system and a recent compiler (LLVM clang 6 or better, GCC 8 or better, Visual Studio 2019 or better). You need a correspondingly recent assembler such as gas (2.30+) or nasm (2.14+): recent compilers usually come with recent assemblers. If you mix a recent compiler with an incompatible/old assembler (e.g., when using a recent compiler with an old Linux distribution), you may get errors at build time because the compiler produces instructions that the assembler does not recognize: you should update your assembler to match your compiler (e.g., upgrade binutils to version 2.30 or better under Linux) or use an older compiler matching the capabilities of your assembler.

-Because big-endian systems are effectively limited commercially to IBM mainframes today, the simdjson library is only tested on little-endian systems. Users who require big-endian support are invited to contribute to the library.
+We test the library on a big-endian system (IBM s390x with Linux) .

 Including simdjson
 ------------------
@@ -142,6 +145,12 @@ As required by the standard, your JSON document should be in a Unicode (UTF-8) s
 string, from the beginning to the end, needs to be valid: we do not attempt to tolerate bad
 inputs before or after a document.

+For efficiency reasons, simdjson requires a string with a few bytes (`simdjson::SIMDJSON_PADDING`)
+at the end, these bytes may be read but their content does not affect the parsing. In practice,
+it means that the JSON inputs should be stored in a memory region with `simdjson::SIMDJSON_PADDING`
+extra bytes at the end. You do not have to set these bytes to specific values though you may
+want to if you want to avoid runtime warnings with some sanitizers.
+
 The simdjson library offers a tree-like [API](https://en.wikipedia.org/wiki/API), which you can
 access by creating a `ondemand::parser` and calling the `iterate()` method. The iterate method
 quickly indexes the input string and may detect some errors. The following example illustrates
@@ -153,8 +162,7 @@ auto json = padded_string::load("twitter.json"); // load JSON file 'twitter.json
 ondemand::document doc = parser.iterate(json); // position a pointer at the beginning of the JSON data
 ```

-You can also create a padded string---for efficiency reasons, simdjson requires a string
-with a few bytes (`simdjson::SIMDJSON_PADDING`) at the end---and calling `iterate()`:
+You can also create a padded string---and call `iterate()`:

 ```c++
 ondemand::parser parser;
@@ -174,11 +182,33 @@ ondemand::document doc = parser.iterate(json, strlen(json), sizeof(json));
 The simdjson library will also accept `std::string` instances, as long as the `capacity()` of
 the string exceeds the `size()` by at least `SIMDJSON_PADDING`. You can increase the `capacity()` with the `reserve()` function of your strings.

+You can copy your data directly on a `simdjson::padded_string` as follows:
+
+```c++
+const char * data = "my data"; // 7 bytes
+simdjson::padded_string my_padded_data(data, 7); // copies to a padded buffer
+```
+
+Or as follows...
+
+```c++
+std::string data = "my data";
+simdjson::padded_string my_padded_data(data); // copies to a padded buffer
+```
+
+
 We recommend against creating many `std::string` or many `std::padding_string` instances in your application to store your JSON data.
 Consider reusing the same buffers and limiting memory allocations.

 By default, the simdjson library throws exceptions (`simdjson_error`) on errors. We omit `try`-`catch` clauses from our illustrating examples: if you omit `try`-`catch` in your code, an uncaught exception will halt your program. It is also possible to use simdjson without generating exceptions, and you may even build the library without exception support at all. See [Error Handling](#error-handling) for details.

+
+Some users may want to browse code along with the compiled assembly. You want to check out the following lists of examples:
+
+* [simdjson examples with errors handled through exceptions](https://godbolt.org/z/98Kx9Kqjn)
+* [simdjson examples with errors without exceptions](https://godbolt.org/z/PKG7GdbPo)
+
+
 Documents are Iterators
 -----------------------

@@ -208,7 +238,9 @@ For best performance, a `parser` instance should be reused over several files: o
 needlessly reallocate memory, an expensive process. It is also possible to avoid entirely memory
 allocations during parsing when using simdjson. [See our performance notes for details](performance.md).

-C++11 Support and string_view
+If you need to have several documents active at once, you should have several parser instances.
+
+string_view
 -------------

 The simdjson library builds on compilers supporting the [C++11 standard](https://en.wikipedia.org/wiki/C%2B%2B11).
@@ -287,20 +319,35 @@ We invite you to keep the following rules in mind:
 2. Because On Demand is really just an iterator, you must fully consume the current object or array before accessing a sibling object or array.
 3. Values can only be consumed once, you should get the values and store them if you plan to need them multiple times. You are expected to access the keys of an object just once. You are expected to go through the values of an array just once.

+The simdjson library makes generous use of `std::string_view` instances. If you are unfamiliar
+with `std::string_view` in C++, make sure to [read the section on std::string_view](#string_view).
+They behave much like an immutable `std::string` but they require no memory allocation. You can
+create a `std::string` instance from an `std::string_view` when you need it.
+
 The following specific instructions indicate how to use the JSON when exceptions are enabled, but simdjson has full, idiomatic
 support for users who avoid exceptions. See [the simdjson error handling documentation](basics.md#error-handling) for more.

 * **Validate What You Use:** When calling `iterate`, the document is quickly indexed. If it is
  not a valid Unicode (UTF-8) string or if there is an unclosed string, an error may be reported right away.
  However, it is not fully validated. On Demand only fully validates the values you use and the
-  structure leading to it.
+  structure leading to it. It means that at every step as you traverse the document, you may encounter an error. You can handle errors either with exceptions or with error codes.
 * **Extracting Values:** You can cast a JSON element to a native type:
  `double(element)`. This works for `std::string_view`, double, uint64_t, int64_t, bool,
  ondemand::object and ondemand::array. We also have explicit methods such as `get_string()`, `get_double()`,
  `get_uint64()`, `get_int64()`, `get_bool()`, `get_object()` and `get_array()`. After a cast or an explicit method,
-  the number, string or boolean will be parsed, or the initial `[` or `{` will be verified. An exception is thrown if
-  the cast is not possible. The `get_string()` returns a valid UTF-8 string, after
-  unescaping characters as needed: unmatched surrogate pairs are treated as an error. When calling `get_uint64()` and `get_int64()`, if the number does not fit in a corresponding 64-bit integer type, it is also considered an error.
+  the number, string or boolean will be parsed, or the initial `{` or `[` will be verified for ondemand::object and ondemand::array. An exception is thrown if
+  the cast is not possible. Importantly, when getting an ondemand::object or ondemand::array instance, its content is
+  not validated: you are only guaranteed that the corresponding initial character (`{` or `[`) is present. Thus,
+  for example, you could have an ondemand::object instance pointing at the invalid JSON `{ "this is not a valid object" }`: the validation occurs as you access the content.
+  The `get_string()` returns a valid UTF-8 string, after
+  unescaping characters as needed: unmatched surrogate pairs are treated as an error unless you
+  pass `true` (`get_string(true)`) as a parameter to get replacement characters where errors
+  occur. If you somehow need to access non-UTF-8 strings in a lossless manner
+  (e.g., if you strings contain unpaired surrogates), you may use the `get_wobbly_string()` function to get a string in the [WTF-8 format](https://simonsapin.github.io/wtf-8).
+  When calling `get_uint64()` and `get_int64()`, if the number does not fit in a corresponding
+  64-bit integer type, it is also considered an error. When parsing numbers or other scalar values, the library checks
+  that the value is followed by an expected character, thus you *may* get a number parsing error when accessing the digits
+  as an integer in the following strings: `{"number":12332a`, `{"number":12332\0`, `{"number":12332` (the digits appear at the end). We always abide by the [RFC 8259](https://www.tbray.org/ongoing/When/201x/2017/12/14/rfc8259.html) JSON specification so that, for example, numbers prefixed by the `+` sign are in error.

  > IMPORTANT NOTE: values can only be parsed once. Since documents are *iterators*, once you have
  > parsed a value (such as by casting to double), you cannot get at it again. It is an error to call
@@ -308,8 +355,8 @@ support for users who avoid exceptions. See [the simdjson error handling documen
 * **Field Access:** To get the value of the "foo" field in an object, use `object["foo"]`. This will
  scan through the object looking for the field with the matching string, doing a character-by-character
  comparison. For efficiency reason, you should avoid looking up the same field repeatedly: e.g., do
-  not do `object["foo"]` followed by `object["foo"]` with the same `object` instance. If you consume an
-  object twice: `std::string_view(object["foo"]` followed by `std::string_view(object["foo"]`, your code
+  not do `object["foo"]` followed by `object["foo"]` with the same `object` instance. Keep in mind that On Demand does not buffer or save the result of the parsing: if you repeatedly access `object["foo"]`, then it must repeatedly seek the key and parse the content. The library does not provide a distinct function to check if a key is present, instead we recommend you attempt to access the key: e.g., by doing `ondemand::value val{}; if(!object["foo"].get(val)) {...}`, you have that `val` contains the requested value inside the if clause.  It is your responsability as a user to temporarily keep a reference to the value (`auto v = object["foo"]`), or to consume the content and store it in your own data structures. If you consume an
+  object twice: `std::string_view(object["foo"]` followed by `std::string_view(object["foo"]` then your code
  is in error. Furthermore, you can only consume one field at a time, on the same object. The
  value instance you get from  `content["bids"]` becomes invalid when you call `content["asks"]`.
  If you have retrieved `content["bids"].get_array()` and you later call
@@ -324,8 +371,9 @@ support for users who avoid exceptions. See [the simdjson error handling documen
  > to support escaped keys, the method `unescaped_key()` provides the desired unescaped keys by
  > parsing and writing out the unescaped keys to a string buffer and returning a `std::string_view`
  > instance. You should expect a performance penalty when using `unescaped_key()`.
+  >
  > ```c++
-  > auto json = R"({"k\u0065y": 1})"_padded;
+  > auto json = R"({"k\u0065y": 1})"_padded;
  > ondemand::parser parser;
  > auto doc = parser.iterate(json);
  > ondemand::object object = doc.get_object();
@@ -432,7 +480,7 @@ support for users who avoid exceptions. See [the simdjson error handling documen
  ```
  This examples also show how we can string several operations and only check for the error once, a strategy we call  *error chaining*.
  Though error chaining makes the code very compact, it also makes error reporting less precise: in this instance, you may get the
-  same error whether the field "str", "123" or "abc" is missing. If you need to break down error handling per operation, avoid error chaining.
+  same error whether the field "str", "123" or "abc" is missing. If you need to break down error handling per operation, avoid error chaining. Furthermore, you should be mindful that chaining that harm performance by encouraging redundancies: writing both `doc["str"]["123"]["abc"].get(value)` and `doc["str"]["123"]["zyw"].get(value)` in the same program may force multiple accesses to the same keys (`"str"` and `"123"`).
 * **Counting elements in arrays:** Sometimes it is useful to scan an array to determine its length prior to parsing it.
  For this purpose, `array` instances have a `count_elements` method. Users should be
  aware that the `count_elements` method can be costly since it requires scanning the
@@ -616,6 +664,41 @@ for (ondemand::object car : parser.iterate(cars_json)) {
 }
 ```

+
+The previous example had an array of objects, but we can use essentially the same
+approach with an object of objects.
+
+```c++
+ondemand::parser parser;
+auto cars_json = R"( {
+  "identifier1":{ "make": "Toyota", "model": "Camry",  "year": 2018, "tire_pressure": [ 40.1, 39.9, 37.7, 40.4 ] },
+  "identifier2":{ "make": "Kia",    "model": "Soul",   "year": 2012, "tire_pressure": [ 30.1, 31.0, 28.6, 28.7 ] },
+  "identifier3":{ "make": "Toyota", "model": "Tercel", "year": 1999, "tire_pressure": [ 29.8, 30.0, 30.2, 30.5 ] }
+} )"_padded;
+// Iterating through an array of objects
+ondemand::document doc = parser.iterate(cars_json);
+for (ondemand::field key_car : doc.get_object()) {
+  // If I need a string_view and/or, I can use key_car.unescaped_key() instead, but
+  // key_car.key() will be more performant otherwise.
+  cout << "identifier : " << key_car.key() << std::endl;
+  // I can now access the subobject:
+  ondemand::object car = key_car.value();
+  // Accessing a field by name
+  cout << "Make/Model: " << std::string_view(car["make"]) << "/" << std::string_view(car["model"]) << endl;
+
+  // Casting a JSON element to an integer
+  uint64_t year = car["year"];
+  cout << "- This car is " << 2020 - year << "years old." << endl;
+
+  // Iterating through an array of floats
+  double total_tire_pressure = 0;
+  for (double tire_pressure : car["tire_pressure"]) {
+    total_tire_pressure += tire_pressure;
+  }
+  cout << "- Average tire pressure: " << (total_tire_pressure / 4) << endl;
+}
+```
+
 The following example illustrates how you may also iterate through object values, effectively visiting all key-value pairs in the object.

 ```C++
@@ -969,7 +1052,7 @@ bool parse() {
    cout << "Make/Model: " << make << "/" << model << endl;

    // Casting a JSON element to an integer
-    uint64_t year;
+    uint64_t year{};
    error = car["year"].get(year);
    if(error) { std::cerr << error << std::endl; return false; }
    cout << "- This car is " << 2020 - year << " years old." << endl;
@@ -1017,6 +1100,8 @@ having to handle exceptions.
  error = doc.get_object().get(object);
  if(error) { return false; }
  for(auto field : object) {
+    // We could replace 'field.key() with field.unescaped_key(),
+    // and ondemand::raw_json_string by std::string_view.
    ondemand::raw_json_string keyv;
    error = field.key().get(keyv);
    if(error) { return false; }
@@ -1065,10 +1150,32 @@ int main(void) {
 }
 ```

+
+You can do handle errors gracefully as well...
+
+```C++
+#include <iostream>
+#include "simdjson.h"
+int main(void) {
+  simdjson::ondemand::parser parser;
+  simdjson::padded_string json_string;
+  simdjson::ondemand::document doc;
+  try {
+    json_string = padded_string::load("twitter.json");
+    doc = parser.iterate(json_string);
+    uint64_t identifier = doc["statuses"].at(0)["id"];
+    std::cout << identifier << std::endl;
+  } catch (simdjson::simdjson_error &error) {
+    std::cerr << "JSON error: " << error.what() << " near "
+              << doc.current_location() << " in " << json_string << std::endl;
+  }
+}
+```
+
 ### Current location in document

 Sometimes, it might be helpful to know the current location in the document during iteration. This is especially useful when encountering errors. The `current_location()` method on a
-`document` instances makes it easy to identify common JSON errors. Users can call the `current_location()` method on a validdocument instance to retrieve a `const char *` pointer to the current location in the document. This method also works even after an error has invalidated the document and the parser (e.g. `TAPE_ERROR`, `INCOMPLETE_ARRAY_OR_OBJECT`).
+`document` instances makes it easy to identify common JSON errors. Users can call the `current_location()` method on a valid document instance to retrieve a `const char *` pointer to the current location in the document. This method also works even after an error has invalidated the document and the parser (e.g. `TAPE_ERROR`, `INCOMPLETE_ARRAY_OR_OBJECT`).
 When the input was a `padding_string` or another null-terminated source, then you may
 use the `const char *` pointer as a C string. As an example, consider the following
 example where we used the exception-free simdjson interface:
@@ -1081,6 +1188,12 @@ int64_t i;
 auto error = doc["integer"].get_int64().get(i);    // Expect to get integer from "integer" key, but get TAPE_ERROR
 if (error) {
  std::cout << error << std::endl;    // Prints TAPE_ERROR error message
+  // Recover a pointer to the location of the first error:
+  const char * ptr;
+  doc.current_location().get(ptr);
+  // ptr points at 'false, "integer": -343} " which is the location of the error
+  //
+  // Because we pad simdjson::padded_string instances with null characters, you may also do the following:
  std::cout<< doc.current_location() << std::endl;  // Prints "false, "integer": -343} " (location of TAPE_ERROR)
 }
 ```
@@ -1157,6 +1270,32 @@ contains control characters that must be escaped and UNCLOSED_STRING if there
 is an unclosed string in the document. We do not provide location information for these
 errors.

+### Checking for trailing content
+
+The parser validates all parsed content, but your code may exhaust the content while
+not having processed the entire document. Thus, as a final optional step, you may
+call `at_end()` on the document instance. If it returns `false`, then you may
+conclude that you have trailing content and that your document is not valid JSON.
+You may then use `doc.current_location()` to obtain a pointer to the start of the trailing
+content.
+
+```C++
+  auto json = R"([1, 2] foo ])"_padded;
+  ondemand::parser parser;
+  ondemand::document doc = parser.iterate(json);
+  ondemand::array array = doc.get_array();
+  for (uint64_t values : array) {
+    std::cout << values << std::endl;
+  }
+  if(!doc.at_end()) {
+    // In this instance, we will be left pointing at 'foo' since we have consumed the array [1,2].
+    std::cerr << "trailing content at byte index " << doc.current_location() - json.data() << std::endl;
+  }
+```
+
+The `at_end()` method is equivalent to `doc.current_location().error() == simdjson::SUCCESS` but
+more convenient.
+
 Rewinding
 ----------

@@ -1195,41 +1334,6 @@ internal string buffer. Thus you should consume values only once
 even if you can iterate through the array or object more than once.
 If you unescape a string within an array more than once, you have unsafe code.

-Direct Access to the Raw String
--------------------------------
-
-The simdjson library makes explicit assumptions about types. For examples, numbers
-must be integers (up to 64-bit integers) or binary64 floating-point numbers. Some users
-have different needs. For example, some users might want to support big integers.
-The library makes this possible by providing a `raw_json_token` method which returns
-a `std::string_view` instance containing the value as a string which you may then
-parse as you see fit.
-
-```C++
-simdjson::ondemand::parser parser;
-simdjson::padded_string docdata =  R"({"value":12321323213213213213213213213211223})"_padded;
-simdjson::ondemand::document doc = parser.iterate(docdata);
-simdjson::ondemand::object obj = doc.get_object();
-std::string_view token = obj["value"].raw_json_token();
-// token has value 12321323213213213213213213213211223, it points inside the input string
-```
-
-The `raw_json_token` method even works when the JSON value is a string. In such cases, it
-will return the complete string with the quotes and with eventual escaped sequences as in the
-source document.
-
-```C++
-simdjson::ondemand::parser parser;
-simdjson::padded_string docdata =  R"({"value":"12321323213213213213213213213211223"})"_padded;
-simdjson::ondemand::document doc = parser.iterate(docdata);
-simdjson::ondemand::object obj = doc.get_object();
-string_view token = obj["value"].raw_json_token();
-// token has value "12321323213213213213213213213211223", it points inside the input string
-```
-
-The `raw_json_token()` should be fast and free of allocation.
-
-

 Newline-Delimited JSON (ndjson) and JSON lines
 ----------------------------------------------
@@ -1534,6 +1638,78 @@ JSON string to a user-provided buffer:
    }
 ```

+
+General Direct Access to the Raw JSON String
+--------------------------------
+If your value is a string, the `raw_json_string` gives you direct access to the unprocess
+string. The simdjson library allows you to have access to the raw underlying JSON
+more generally.
+
+The simdjson library makes explicit assumptions about types. For examples, numbers
+must be integers (up to 64-bit integers) or binary64 floating-point numbers. Some users
+have different needs. For example, some users might want to support big integers.
+The library makes this possible by providing a `raw_json_token` method which returns
+a `std::string_view` instance containing the value as a string which you may then
+parse as you see fit.
+
+```C++
+simdjson::ondemand::parser parser;
+simdjson::padded_string docdata =  R"({"value":12321323213213213213213213213211223})"_padded;
+simdjson::ondemand::document doc = parser.iterate(docdata);
+simdjson::ondemand::object obj = doc.get_object();
+std::string_view token = obj["value"].raw_json_token();
+// token has value 12321323213213213213213213213211223, it points inside the input string
+```
+
+The `raw_json_token` method even works when the JSON value is a string. In such cases, it
+will return the complete string with the quotes and with eventual escaped sequences as in the
+source document.
+
+```C++
+simdjson::ondemand::parser parser;
+simdjson::padded_string docdata =  R"({"value":"12321323213213213213213213213211223"})"_padded;
+simdjson::ondemand::document doc = parser.iterate(docdata);
+simdjson::ondemand::object obj = doc.get_object();
+string_view token = obj["value"].raw_json_token();
+// token has value "12321323213213213213213213213211223", it points inside the input string
+```
+
+The `raw_json_token()` should be fast and free of allocation.
+
+If you value is an array or an object, `raw_json_token()` returns effectively a single
+character (`[`) or (`}`) which is not very useful. For arrays and objects, we have another
+method called `raw_json()` which consumes (traverse) the array or the object.
+
+```C++
+simdjson::ondemand::parser parser;
+simdjson::padded_string docdata =  R"({"value":123})"_padded;
+simdjson::ondemand::document doc = parser.iterate(docdata);
+simdjson::ondemand::object obj = doc.get_object();
+string_view token = obj.raw_json(); // gives you `{"value":123}`
+```
+
+
+```C++
+simdjson::ondemand::parser parser;
+simdjson::padded_string docdata =  R"([1,2,3])"_padded;
+simdjson::ondemand::document doc = parser.iterate(docdata);
+simdjson::ondemand::array arr = doc.get_array();
+string_view token = arr.raw_json(); // gives you `[1,2,3]`
+```
+
+Because `raw_json()` consumes to object or the array, if you want to both have
+access to the raw string, and also use the array or object, you should call `reset()`.
+
+```C++
+simdjson::ondemand::parser parser;
+simdjson::padded_string docdata =  R"({"value":123})"_padded;
+simdjson::ondemand::document doc = parser.iterate(docdata);
+simdjson::ondemand::object obj = doc.get_object();
+string_view token = obj.raw_json(); // gives you `{"value":123}`
+obj.reset(); // revise the object
+uint64_t x = obj["value"]; // gives me 123
+```
+
 Thread Safety
 -------------

@@ -1574,3 +1750,215 @@ Backwards Compatibility
 The only header file supported by simdjson is `simdjson.h`. Older versions of simdjson published a
 number of other include files such as `document.h` or `ParsedJson.h` alongside `simdjson.h`; these headers
 may be moved or removed in future versions.
+
+Examples
+--------
+
+Some users like to have example. The following code samples illustrate how to process specific JSON inputs.
+For simplicity, we do not include full error support: this code would throw exceptions on error.
+
+
+* Example 1: ZuluBBox
+
+```C++
+struct ZuluBBox {
+  double xmin;
+  double ymin;
+  double width;
+  double height;
+
+  void print() {
+    std::cout << xmin << ", " << ymin << ", " << width << ", " << height
+              << std::endl;
+  }
+};
+
+bool example() {
+
+  auto json = R"+( {
+  "ZuluROI": {
+    "ZuluBBox": {
+      "xmin": 0,
+      "ymin": 0,
+      "width": 1,
+      "height": 1
+    },
+    "SubObjects": [
+      {
+        "ZuluDetection": {
+          "label": "car",
+          "class_id": 3,
+          "confidence": 0.7587034106254578,
+          "ZuluBBox": {
+            "xmin": 0.3843536376953125,
+            "ymin": 0.4532909393310547,
+            "width": 0.09115534275770187,
+            "height": 0.04127710685133934
+          },
+          "SubObjects": []
+        }
+      },
+      {
+        "ZuluDetection": {
+          "label": "car",
+          "class_id": 3,
+          "confidence": 0.6718865633010864,
+          "ZuluBBox": {
+            "xmin": 0.7500002980232239,
+            "ymin": 0.5212296843528748,
+            "width": 0.07592231780290604,
+            "height": 0.038947589695453644
+          },
+          "SubObjects": []
+        }
+      },
+      {
+        "ZuluDetection": {
+          "label": "car",
+          "class_id": 3,
+          "confidence": 0.5806200504302979,
+          "ZuluBBox": {
+            "xmin": 0.9025363922119141,
+            "ymin": 0.5925348401069641,
+            "width": 0.05478987470269203,
+            "height": 0.046337299048900604
+          },
+          "SubObjects": []
+        }
+      }
+    ]
+  },
+  "timestamp (ms)": 1677085594421,
+  "buffer_offset": 35673
+} )+"_padded;
+  ondemand::parser parser;
+  ondemand::document doc = parser.iterate(json);
+  ondemand::object root_object = doc.get_object();
+  ondemand::object roi_object = root_object["ZuluROI"];
+
+  ondemand::object box_roi_object = roi_object["ZuluBBox"];
+  ZuluBBox box = {
+      double(box_roi_object["xmin"]), double(box_roi_object["ymin"]),
+      double(box_roi_object["width"]), double(box_roi_object["height"])};
+  box.print();
+
+  for (ondemand::object value : roi_object["SubObjects"]) {
+    ondemand::object detect = value["ZuluDetection"];
+    std::cout << detect["label"].get_string() << std::endl;
+    std::cout << detect["class_id"].get_uint64() << std::endl;
+    std::cout << detect["confidence"].get_double() << std::endl;
+
+    ondemand::object vbox_roi_object = detect["ZuluBBox"];
+    ZuluBBox vbox = {
+        double(vbox_roi_object["xmin"]), double(vbox_roi_object["ymin"]),
+        double(vbox_roi_object["width"]), double(vbox_roi_object["height"])};
+    vbox.print();
+  }
+
+  std::cout << root_object["timestamp (ms)"].get_uint64() << std::endl;
+  std::cout << root_object["buffer_offset"].get_uint64() << std::endl;
+  return true;
+}
+```
+
+
+* Example 2: Demos
+
+```C++
+bool example() {
+  auto json = R"+( {
+    "5f08a730b280e54fd1e75a7046b93fdc": {
+        "file": "/DEMOS/0-9/10_Orbyte.sid",
+        "len": [
+            "1:17"
+        ],
+        "loud": [
+            "-22.8"
+        ],
+        "name": "10 Orbyte",
+        "author": "Michael Becker (Premium)",
+        "release": "2014 Tristar & Red Sector Inc.",
+        "bits": 20
+    },
+    "2727236ead44a62f0c6e01f6dd4dc484": {
+        "file": "/DEMOS/0-9/12345.sid",
+        "len": [
+            "0:56"
+        ],
+        "loud": [
+            "-33.3"
+        ],
+        "name": "12345",
+        "author": "Beal",
+        "release": "1988 Beal",
+        "bits": 20
+    },
+    "7ea765fce6c0f92570b18adc7bf52f54": {
+        "file": "/DEMOS/0-9/128_Byte_Blues_BASIC.sid",
+        "len": [
+            "0:18"
+        ],
+        "loud": [
+            "-27.1"
+        ],
+        "name": "128 Byte Blues",
+        "author": "Leonard J. Paul (Freaky DNA)",
+        "release": "2005 Freaky DNA",
+        "bits": 62
+    }
+} )+"_padded;
+  ondemand::parser parser;
+  ondemand::document doc = parser.iterate(json);
+  ondemand::object root_object = doc.get_object();
+  for(auto key_value : root_object) {
+    // could get std::string_view with 'unescaped_key()':
+    std::cout << "key: " << key_value.key() << std::endl;
+    ondemand::object obj = key_value.value();
+
+    std::cout << "file: " << std::string_view(obj["file"]) << std::endl;
+
+    std::cout << "len: ";
+    for(std::string_view values : obj["len"]) {
+      std::cout << values << std::endl;
+    }
+    std::cout << std::endl;
+
+    std::cout << "loud: ";
+    for(std::string_view values : obj["loud"]) {
+      std::cout << values << std::endl;
+    }
+    std::cout << std::endl;
+
+    std::cout << "name: " << std::string_view(obj["name"]) << std::endl;
+    std::cout << "author: " << std::string_view(obj["author"]) << std::endl;
+    std::cout << "release: " << std::string_view(obj["release"]) << std::endl;
+    std::cout << "bits: " << uint64_t(obj["bits"]) << std::endl;
+  }
+  return true;
+}
+```
+
+
+Performance Tips
+--------
+
+
+- The On Demand front-end works best when doing a single pass over the input: avoid calling `count_elements`, `rewind` and similar methods.
+- If you are familiar with assembly language, you may use the online tool godbolt to explore the compiled code. The following example may work: [https://godbolt.org/z/xE4GWs573](https://godbolt.org/z/xE4GWs573).
+- Given a field `field` in an object, calling `field.key()` is often faster than `field.unescaped_key()` so if you do not need an unescaped `std::string_view` instance, prefer `field.key()`.
+- For release builds, we recommend setting `NDEBUG` pre-processor directive when compiling the `simdjson` library. Importantly, using the optimization flags `-O2` or `-O3` under GCC and LLVM clang does not set the `NDEBUG` directive, you must set it manually (e.g., `-DNDEBUG`).
+- For long streams of JSON documents, consider [`iterate_many`](iterate_many.md) and [`parse_many`](parse_many.md) for better performance.
+- If possible, refer to each object and array in your code once. For example, the following code repeatedly refers to the `"data"` key to create an object...
+	```C++
+	std::string_view make = o["data"]["make"];
+	std::string_view model = o["data"]["model"];
+	std::string_view year = o["data"]["year"];
+  ```
+  We expect that it is more efficient to access the `"data"` key once:
+  ```C++
+	simdjson::ondemand::object data = o["data"];
+	std::string_view model = data["model"];
+	std::string_view year = data["year"];
+	std::string_view rating = data["rating"];
+  ```
+- To better understand the operation of your On Demand parser, and whether it is performing as well as you think it should be, there is a  logger feature built in to simdjson! To use it, define the pre-processor directive `SIMDJSON_VERBOSE_LOGGING` prior to including the `simdjson.h` header, which enables logging in simdjson. Run your code. It may generate a lot of logging output; adding printouts from your application that show each section may be helpful. The log’s output will show step-by-step information on state, buffer pointer position, depth, and key retrieval status. The log level is set to `INFO` by default, but can be modified with the environment variable `SIMDJSON_LOG_LEVEL`. Setting the environment variable `SIMDJSON_LOG_LEVEL` to `ERROR` will log only errors.
@@ -16,6 +16,7 @@ An overview of what you need to know to use simdjson, with examples.
 * [Server Loops: Long-Running Processes and Memory Capacity](#server-loops-long-running-processes-and-memory-capacity)
 * [Best Use of the DOM API](#best-use-of-the-dom-api)
 * [Padding and Temporary Copies](#padding-and-temporary-copies)
+* [Performance Tips](#performance-tips)

 DOM vs On Demand
 ----------------------------------------------
@@ -44,6 +45,20 @@ dom::parser parser;
 dom::element doc = parser.parse("[1,2,3]"_padded); // parse a string, the _padded suffix creates a simdjson::padded_string instance
 ```

+You can copy your data directly on a `simdjson::padded_string` as follows:
+
+```c++
+const char * data = "my data"; // 7 bytes
+simdjson::padded_string my_padded_data(data, 7); // copies to a padded buffer
+```
+
+Or as follows...
+
+```c++
+std::string data = "my data";
+simdjson::padded_string my_padded_data(data); // copies to a padded buffer
+```
+
 The parsed document resulting from the `parser.load` and `parser.parse` calls depends on the `parser` instance. Thus the `parser` instance must remain in scope. Furthermore, you must have at most one parsed document in play per `parser` instance.
 You cannot copy a `parser` instance, you may only move it.

@@ -644,3 +659,9 @@ simdjson::dom::element element = parser.parse(padded_json_copy.get(), json_len,
 ````

 Setting the `realloc_if_needed` parameter `false` in this manner may lead to better performance since copies are avoided, but it requires that the user takes more responsibilities: the simdjson library cannot verify that the input buffer was padded with SIMDJSON_PADDING extra bytes.
+
+Performance Tips
+---------------------
+
+- For release builds, we recommend setting `NDEBUG` pre-processor directive when compiling the `simdjson` library. Importantly, using the optimization flags `-O2` or `-O3` under GCC and LLVM clang does not set the `NDEBUG` directrive, you must set it manually (e.g., `-DNDEBUG`).
+- For long streams of JSON documents, consider [`iterate_many`](iterate_many.md) and [`parse_many`](parse_many.md) for better performance.
@@ -21,12 +21,13 @@ The current implementations are:
 * haswell: AVX2 (2013 Intel Haswell or later)
 * westmere: SSE4.2 (2010 Westmere or later).
 * arm64: 64-bit ARMv8-A NEON
-* ppc64: 64-bit POWER8 and POWER9 with VSX and ALTIVEC extensions. Both big endian and little endian are implemented, depends on the compiler you are using. Users are advised that the library is not tested on big-endian systems.
+* ppc64: 64-bit POWER8 and POWER9 with VSX and ALTIVEC extensions. Both big endian and little endian are implemented, depends on the compiler you are using. The library is tested on recent, little-endian, POWER systems.
 * fallback: A generic implementation that runs on any 64-bit processor.

 In many cases, you don't know where your compiled binary is going to run, so simdjson automatically
-compiles *all* the implementations into the executable. On Intel, it will include 3 implementations
-(haswell, westmere and fallback), on ARM it will include 2 (arm64 and fallback), and on PPC it will include 2 (ppc64 and fallback).
+compiles *all* the implementations into the executable. On Intel, it will include 4 implementations
+(icelake, haswell, westmere and fallback), on ARM it will include 2 (arm64 and fallback), and on PPC
+it will include 2 (ppc64 and fallback).

 If you know more about where you're going to run and want to save the space, you can disable any of
 these implementations at compile time with `-DSIMDJSON_IMPLEMENTATION_X=0` (where X is ICELAKE, HASWELL,
@@ -237,3 +237,8 @@ This will print:
 ```

 Importantly, you should only call `truncated_bytes()` after iterating through all of the documents since the stream cannot tell whether there are truncated documents at the very end when it may not have accessed that part of the data yet.
+
+Comma separated documents
+-----------
+
+`iterate_many` also takes in an option to allow parsing of comma separated documents. In this mode, the entire buffer is processed in 1 batch and batch size will be increased to be as large as the JSON passed. Therefore, the capacity of the parser has to be sufficient to support the batch size set.
@@ -752,7 +752,7 @@ On relevant systems, the On Demand API provides some support for runtime dispatc

 Some users wish to run at the best possible speed. Under recent Intel and AMD processors, these users should take additional steps to verify that their code is well optimized.

-Given that the On Demand API offer limited runtime dispatching, it matters that your code is compiled against a specific CPU target. You should verify that the code is compiled against the target you expect. Thankfully, the simdjson library will tell you exactly what it detects as an implementation: `haswell` (AVX2 x64 processors), `westmere` (SSE4 x64 processors), `arm64` (64-bit ARM), `ppc64` (64-bit POWER), `fallback` (others). Under x64 processors, many programmers will want to target `haswell` whereas under ARM, most programmers will want to target `arm64` (and it should do so automatically). The `fallback` is probably only good for testing purposes, not for deployment.
+Given that the On Demand API offer limited runtime dispatching, it matters that your code is compiled against a specific CPU target. You should verify that the code is compiled against the target you expect. Thankfully, the simdjson library will tell you exactly what it detects as an implementation: `icelake` (AVX512 x64 processors), `haswell` (AVX2 x64 processors), `westmere` (SSE4 x64 processors), `arm64` (64-bit ARM), `ppc64` (64-bit POWER), `fallback` (others). Under x64 processors, many programmers will want to target `haswell` whereas under ARM, most programmers will want to target `arm64` (and it should do so automatically). The `fallback` is probably only good for testing purposes, not for deployment.

 ```C++
  std::cout << simdjson::builtin_implementation()->name() << std::endl;
@@ -3,7 +3,10 @@ Performance Notes

 simdjson strives to be at its fastest *without tuning*, and generally achieves this. However, there
 are still some scenarios where tuning can enhance performance.
-
+Once your code is tested, we
+further encourage you to define `NDEBUG` in your Release builds to disable additional runtime
+testing and get the best performance.
+* [NDEBUG directive](#ndebug-directive)
 * [Reusing the parser for maximum efficiency](#reusing-the-parser-for-maximum-efficiency)
 * [Reusing string buffers](#reusing-string-buffers)
 * [Server Loops: Long-Running Processes and Memory Capacity](#server-loops-long-running-processes-and-memory-capacity)
@@ -12,6 +15,18 @@ are still some scenarios where tuning can enhance performance.
 * [Visual Studio](#visual-studio)
 * [Power Usage and Downclocking](#power-usage-and-downclocking)

+
+NDEBUG directive
+-------------
+
+In C/C++, the `NDEBUG` pre-processor directive is not set by default. When it is not set, the simdjson library does
+many additional checks that may impact negatively the performance. We recommend that, once your code
+is well tested, you define `NDEBUG` directive in your Release builds. The `NDEBUG` directive should be defined
+prior to including the `simdjson.h` header.
+
+The `NDEBUG` directive is generally independent from optimization flags. For example, setting `-O3` under
+GCC does not set the `NDEBUG` directive.
+
 Reusing the parser for maximum efficiency
 -----------------------------------------

@@ -138,7 +153,7 @@ few hundred megabytes per second if your JSON documents are densely packed with
 Visual Studio
 --------------

-On Intel and AMD Windows platforms, Microsoft Visual Studio enables programmers to build either 32-bit (x86) or 64-bit (x64) binaries. We urge you to always use 64-bit mode. Visual Studio 2019 should default on 64-bit builds when you have a 64-bit version of Windows, which we recommend.
+On Intel and AMD Windows platforms, Microsoft Visual Studio enables programmers to build either 32-bit (x86) or 64-bit (x64 or ARM64) binaries. We urge you to always use 64-bit mode. Visual Studio 2019 should default on 64-bit builds when you have a 64-bit version of Windows, which we recommend.

 When compiling with Visual Studio, we recommend the flags `/Ob2 /O2` or better. We do not recommend that you compile simdjson with architecture-specific flags such as  `arch:AVX2`. The simdjson library automatically selects the best execution kernel at runtime.

@@ -160,8 +175,7 @@ You should not expect the simdjson library to cause *downclocking* of your recen
 - [Whenever 512-bit AVX-512 instructions are used](https://lemire.me/blog/2018/09/07/avx-512-when-and-how-to-use-these-new-instructions/).
 - Whenever heavy 256-bit or wider instructions are used. Heavy instructions are those involving floating point operations or integer multiplications (since these execute on the floating point unit).

-The simdjson library does not make use of heavy 256-bit instructions. We do use vectorized multiplications, but only using 128-bit registers. Thus there should be no downclocking due to simdjson on recent processors, except when AVX-512 is allowed and
-detected. However, we only allow AVX-512 on recent processors (Ice Lake/Tiger Lake or better) where [little to no frequency throttling is expected](https://travisdowns.github.io/blog/2020/08/19/icl-avx512-freq.html). If you can still concerned, you can easily disable AVX-512 with the CMake option `SIMDJSON_AVX512_ALLOWED` set to `OFF` (e.g., `cmake -D SIMDJSON_AVX512_ALLOWED=OFF -B build && cmake --build build`) or by setting
+The simdjson library does not generally make use of heavy 256-bit instructions. On AVX2 kernels, we use vectorized multiplications, but only using 128-bit registers. On recent processors (Ice Lake/Tiger Lake or better, AMD Zen 4 or better) [no frequency throttling is found](https://travisdowns.github.io/blog/2020/08/19/icl-avx512-freq.html) due to SIMD instructions: we are thus more aggressive with SIMD on these machines. If you can still concerned, you can easily disable AVX-512 with the CMake option `SIMDJSON_AVX512_ALLOWED` set to `OFF` (e.g., `cmake -D SIMDJSON_AVX512_ALLOWED=OFF -B build && cmake --build build`) or by setting
 the macro `SIMDJSON_AVX512_ALLOWED` to `0` in C++ prior to importing the headers.

 You may still be worried about which SIMD instruction set is used by simdjson.  Thankfully,  [you can always determine and change which architecture-specific implementation is used](implementation-selection.md) by simdjson. Thus even if your CPU supports AVX2, you do not need to use AVX2. You are in control.
@@ -9,6 +9,10 @@ namespace {
 // but the algorithms do not end up using the returned value.
 // Sadly, sanitizers are not smart enough to figure it out.
 SIMDJSON_NO_SANITIZE_UNDEFINED
+// This function can be used safely even if not all bytes have been
+// initialized.
+// See issue https://github.com/simdjson/simdjson/issues/1965
+SIMDJSON_NO_SANITIZE_MEMORY
 simdjson_inline int trailing_zeroes(uint64_t input_num) {
 #ifdef SIMDJSON_REGULAR_VISUAL_STUDIO
  unsigned long ret;
@@ -12,6 +12,9 @@ using namespace simdjson;
 using namespace simdjson::dom;
 }

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation() : simdjson::implementation("arm64", "ARM NEON", internal::instruction_set::NEON) {}
@@ -329,4 +329,8 @@ namespace std {
 #define SIMDJSON_DEVELOPMENT_ASSERT(expr) do { } while (0)
 #endif

+#ifndef SIMDJSON_UTF8VALIDATION
+#define SIMDJSON_UTF8VALIDATION 1
+#endif
+
 #endif // SIMDJSON_COMMON_DEFS_H
@@ -226,7 +226,7 @@ inline error_code parser::ensure_capacity(document& target_document, size_t desi
 }

 simdjson_inline void parser::set_max_capacity(size_t max_capacity) noexcept {
-  if(max_capacity < MINIMAL_DOCUMENT_CAPACITY) {
+  if(max_capacity > MINIMAL_DOCUMENT_CAPACITY) {
    _max_capacity = max_capacity;
  } else {
    _max_capacity = MINIMAL_DOCUMENT_CAPACITY;
@@ -145,7 +145,9 @@ public:
   * ### REQUIRED: Buffer Padding
   *
   * The buffer must have at least SIMDJSON_PADDING extra allocated bytes. It does not matter what
-   * those bytes are initialized to, as long as they are allocated.
+   * those bytes are initialized to, as long as they are allocated. These bytes will be read: if you
+   * using a sanitizer that verifies that no uninitialized byte is read, then you should initialize the
+   * SIMDJSON_PADDING bytes to avoid runtime warnings.
   *
   * If realloc_if_needed is true (the default), it is assumed that the buffer does *not* have enough padding,
   * and it is copied into an enlarged temporary buffer before parsing. Thus the following is safe:
@@ -408,7 +410,9 @@ public:
   * ### REQUIRED: Buffer Padding
   *
   * The buffer must have at least SIMDJSON_PADDING extra allocated bytes. It does not matter what
-   * those bytes are initialized to, as long as they are allocated.
+   * those bytes are initialized to, as long as they are allocated. These bytes will be read: if you
+   * using a sanitizer that verifies that no uninitialized byte is read, then you should initialize the
+   * SIMDJSON_PADDING bytes to avoid runtime warnings.
   *
   * ### Threads
   *
@@ -11,6 +11,9 @@ using namespace simdjson;
 using namespace simdjson::dom;
 }

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation() : simdjson::implementation(
@@ -35,7 +35,8 @@ public:
  simdjson_warn_unused error_code stage1(const uint8_t *buf, size_t len, stage1_mode partial) noexcept final;
  simdjson_warn_unused error_code stage2(dom::document &doc) noexcept final;
  simdjson_warn_unused error_code stage2_next(dom::document &doc) noexcept final;
-  simdjson_warn_unused uint8_t *parse_string(const uint8_t *src, uint8_t *dst) const noexcept final;
+  simdjson_warn_unused uint8_t *parse_string(const uint8_t *src, uint8_t *dst, bool allow_replacement) const noexcept final;
+  simdjson_warn_unused uint8_t *parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept final;
  inline simdjson_warn_unused error_code set_capacity(size_t capacity) noexcept final;
  inline simdjson_warn_unused error_code set_max_depth(size_t max_depth) noexcept final;
 private:
@@ -205,4 +205,8 @@ simdjson_inline  simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdj
  if (error()) { return error(); }
  return first.at_pointer(json_pointer);
 }
+simdjson_inline  simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array>::raw_json() noexcept {
+  if (error()) { return error(); }
+  return first.raw_json();
+}
 } // namespace simdjson
@@ -186,6 +186,8 @@ public:
  inline simdjson_result<bool> reset() & noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at(size_t index) noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<std::string_view> raw_json() noexcept;
+
 };

 } // namespace simdjson
@@ -20,7 +20,7 @@ inline std::string document::to_debug_string() noexcept {
  return iter.to_string();
 }

-inline simdjson_result<const char *> document::current_location() noexcept {
+inline simdjson_result<const char *> document::current_location() const noexcept {
  return iter.current_location();
 }

@@ -28,6 +28,11 @@ inline int32_t document::current_depth() const noexcept {
  return iter.depth();
 }

+inline bool document::at_end() const noexcept {
+  return iter.at_end();
+}
+
+
 inline bool document::is_alive() noexcept {
  return iter.is_alive();
 }
@@ -49,14 +54,24 @@ simdjson_inline simdjson_result<value> document::get_value() noexcept {
  // gets called.
  iter.assert_at_document_depth();
  switch (*iter.peek()) {
-    case '[':
-    case '{':
+    case '[': {
+      // The following lines check that the document ends with ].
+      auto value_iterator = get_root_value_iterator();
+      auto error = value_iterator.check_root_array();
+      if(error) { return error; }
      return value(get_root_value_iterator());
+    }
+    case '{': {
+      // The following lines would check that the document ends with }.
+      auto value_iterator = get_root_value_iterator();
+      auto error = value_iterator.check_root_object();
+      if(error) { return error; }
+      return value(get_root_value_iterator());
+    }
    default:
      // Unfortunately, scalar documents are a special case in simdjson and they cannot
      // be safely converted to value instances.
      return SCALAR_DOCUMENT_AS_VALUE;
-      // return value(get_root_value_iterator());
  }
 }
 simdjson_inline simdjson_result<array> document::get_array() & noexcept {
@@ -94,8 +109,11 @@ simdjson_inline simdjson_result<double> document::get_double() noexcept {
 simdjson_inline simdjson_result<double> document::get_double_in_string() noexcept {
  return get_root_value_iterator().get_root_double_in_string(true);
 }
-simdjson_inline simdjson_result<std::string_view> document::get_string() noexcept {
-  return get_root_value_iterator().get_root_string(true);
+simdjson_inline simdjson_result<std::string_view> document::get_string(bool allow_replacement) noexcept {
+  return get_root_value_iterator().get_root_string(true, allow_replacement);
+}
+simdjson_inline simdjson_result<std::string_view> document::get_wobbly_string() noexcept {
+  return get_root_value_iterator().get_root_wobbly_string(true);
 }
 simdjson_inline simdjson_result<raw_json_string> document::get_raw_json_string() noexcept {
  return get_root_value_iterator().get_root_raw_json_string(true);
@@ -110,7 +128,7 @@ simdjson_inline simdjson_result<bool> document::is_null() noexcept {
 template<> simdjson_inline simdjson_result<array> document::get() & noexcept { return get_array(); }
 template<> simdjson_inline simdjson_result<object> document::get() & noexcept { return get_object(); }
 template<> simdjson_inline simdjson_result<raw_json_string> document::get() & noexcept { return get_raw_json_string(); }
-template<> simdjson_inline simdjson_result<std::string_view> document::get() & noexcept { return get_string(); }
+template<> simdjson_inline simdjson_result<std::string_view> document::get() & noexcept { return get_string(false); }
 template<> simdjson_inline simdjson_result<double> document::get() & noexcept { return get_double(); }
 template<> simdjson_inline simdjson_result<uint64_t> document::get() & noexcept { return get_uint64(); }
 template<> simdjson_inline simdjson_result<int64_t> document::get() & noexcept { return get_int64(); }
@@ -118,7 +136,7 @@ template<> simdjson_inline simdjson_result<bool> document::get() & noexcept { re
 template<> simdjson_inline simdjson_result<value> document::get() & noexcept { return get_value(); }

 template<> simdjson_inline simdjson_result<raw_json_string> document::get() && noexcept { return get_raw_json_string(); }
-template<> simdjson_inline simdjson_result<std::string_view> document::get() && noexcept { return get_string(); }
+template<> simdjson_inline simdjson_result<std::string_view> document::get() && noexcept { return get_string(false); }
 template<> simdjson_inline simdjson_result<double> document::get() && noexcept { return std::forward<document>(*this).get_double(); }
 template<> simdjson_inline simdjson_result<uint64_t> document::get() && noexcept { return std::forward<document>(*this).get_uint64(); }
 template<> simdjson_inline simdjson_result<int64_t> document::get() && noexcept { return std::forward<document>(*this).get_int64(); }
@@ -138,7 +156,7 @@ simdjson_inline document::operator object() & noexcept(false) { return get_objec
 simdjson_inline document::operator uint64_t() noexcept(false) { return get_uint64(); }
 simdjson_inline document::operator int64_t() noexcept(false) { return get_int64(); }
 simdjson_inline document::operator double() noexcept(false) { return get_double(); }
-simdjson_inline document::operator std::string_view() noexcept(false) { return get_string(); }
+simdjson_inline document::operator std::string_view() noexcept(false) { return get_string(false); }
 simdjson_inline document::operator raw_json_string() noexcept(false) { return get_raw_json_string(); }
 simdjson_inline document::operator bool() noexcept(false) { return get_bool(); }
 simdjson_inline document::operator value() noexcept(false) { return get_value(); }
@@ -359,9 +377,13 @@ simdjson_inline simdjson_result<double> simdjson_result<SIMDJSON_IMPLEMENTATION:
  if (error()) { return error(); }
  return first.get_double_in_string();
 }
-simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::get_string() noexcept {
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::get_string(bool allow_replacement) noexcept {
  if (error()) { return error(); }
-  return first.get_string();
+  return first.get_string(allow_replacement);
+}
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::get_wobbly_string() noexcept {
+  if (error()) { return error(); }
+  return first.get_wobbly_string();
 }
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::get_raw_json_string() noexcept {
  if (error()) { return error(); }
@@ -490,6 +512,12 @@ simdjson_inline simdjson_result<const char *> simdjson_result<SIMDJSON_IMPLEMENT
  return first.current_location();
 }

+simdjson_inline bool simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::at_end() const noexcept {
+  if (error()) { return error(); }
+  return first.at_end();
+}
+
+
 simdjson_inline int32_t simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::current_depth() const noexcept {
  if (error()) { return error(); }
  return first.current_depth();
@@ -538,7 +566,8 @@ simdjson_inline simdjson_result<int64_t> document_reference::get_int64() noexcep
 simdjson_inline simdjson_result<int64_t> document_reference::get_int64_in_string() noexcept { return doc->get_root_value_iterator().get_root_int64_in_string(false); }
 simdjson_inline simdjson_result<double> document_reference::get_double() noexcept { return doc->get_root_value_iterator().get_root_double(false); }
 simdjson_inline simdjson_result<double> document_reference::get_double_in_string() noexcept { return doc->get_root_value_iterator().get_root_double(false); }
-simdjson_inline simdjson_result<std::string_view> document_reference::get_string() noexcept { return doc->get_root_value_iterator().get_root_string(false); }
+simdjson_inline simdjson_result<std::string_view> document_reference::get_string(bool allow_replacement) noexcept { return doc->get_root_value_iterator().get_root_string(false, allow_replacement); }
+simdjson_inline simdjson_result<std::string_view> document_reference::get_wobbly_string() noexcept { return doc->get_root_value_iterator().get_root_wobbly_string(false); }
 simdjson_inline simdjson_result<raw_json_string> document_reference::get_raw_json_string() noexcept { return doc->get_root_value_iterator().get_root_raw_json_string(false); }
 simdjson_inline simdjson_result<bool> document_reference::get_bool() noexcept { return doc->get_root_value_iterator().get_root_bool(false); }
 simdjson_inline simdjson_result<value> document_reference::get_value() noexcept { return doc->get_value(); }
@@ -670,9 +699,13 @@ simdjson_inline simdjson_result<double> simdjson_result<SIMDJSON_IMPLEMENTATION:
  if (error()) { return error(); }
  return first.get_double_in_string();
 }
-simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::get_string() noexcept {
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::get_string(bool allow_replacement) noexcept {
  if (error()) { return error(); }
-  return first.get_string();
+  return first.get_string(allow_replacement);
+}
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::get_wobbly_string() noexcept {
+  if (error()) { return error(); }
+  return first.get_wobbly_string();
 }
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::get_raw_json_string() noexcept {
  if (error()) { return error(); }
@@ -96,11 +96,24 @@ public:
   *
   * Important: Calling get_string() twice on the same document is an error.
   *
+   * @param Whether to allow a replacement character for unmatched surrogate pairs.
   * @returns An UTF-8 string. The string is stored in the parser and will be invalidated the next
   *          time it parses a document or when it is destroyed.
   * @returns INCORRECT_TYPE if the JSON value is not a string.
   */
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;
+  /**
+   * Cast this JSON value to a string.
+   *
+   * The string is not guaranteed to be valid UTF-8. See https://simonsapin.github.io/wtf-8/
+   *
+   * Important: Calling get_wobbly_string() twice on the same document is an error.
+   *
+   * @returns An UTF-8 string. The string is stored in the parser and will be invalidated the next
+   *          time it parses a document or when it is destroyed.
+   * @returns INCORRECT_TYPE if the JSON value is not a string.
+   */
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  /**
   * Cast this JSON value to a raw_json_string.
   *
@@ -498,7 +511,14 @@ public:
  /**
   * Returns the current location in the document if in bounds.
   */
-  inline simdjson_result<const char *> current_location() noexcept;
+  inline simdjson_result<const char *> current_location() const noexcept;
+
+  /**
+   * Returns true if this document has been fully parsed.
+   * If you have consumed the whole document and at_end() returns
+   * false, then there may be trailing content.
+   */
+  inline bool at_end() const noexcept;

  /**
   * Returns the current depth in the document if in bounds.
@@ -599,7 +619,8 @@ public:
  simdjson_inline simdjson_result<int64_t> get_int64_in_string() noexcept;
  simdjson_inline simdjson_result<double> get_double() noexcept;
  simdjson_inline simdjson_result<double> get_double_in_string() noexcept;
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  simdjson_inline simdjson_result<raw_json_string> get_raw_json_string() noexcept;
  simdjson_inline simdjson_result<bool> get_bool() noexcept;
  simdjson_inline simdjson_result<value> get_value() noexcept;
@@ -667,7 +688,8 @@ public:
  simdjson_inline simdjson_result<int64_t> get_int64_in_string() noexcept;
  simdjson_inline simdjson_result<double> get_double() noexcept;
  simdjson_inline simdjson_result<double> get_double_in_string() noexcept;
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> get_raw_json_string() noexcept;
  simdjson_inline simdjson_result<bool> get_bool() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> get_value() noexcept;
@@ -705,6 +727,7 @@ public:
  simdjson_inline simdjson_result<bool> is_scalar() noexcept;
  simdjson_inline simdjson_result<const char *> current_location() noexcept;
  simdjson_inline int32_t current_depth() const noexcept;
+  simdjson_inline bool at_end() const noexcept;
  simdjson_inline bool is_negative() noexcept;
  simdjson_inline simdjson_result<bool> is_integer() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::number_type> get_number_type() noexcept;
@@ -737,7 +760,8 @@ public:
  simdjson_inline simdjson_result<int64_t> get_int64_in_string() noexcept;
  simdjson_inline simdjson_result<double> get_double() noexcept;
  simdjson_inline simdjson_result<double> get_double_in_string() noexcept;
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> get_raw_json_string() noexcept;
  simdjson_inline simdjson_result<bool> get_bool() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> get_value() noexcept;
@@ -84,12 +84,14 @@ simdjson_inline document_stream::document_stream(
  ondemand::parser &_parser,
  const uint8_t *_buf,
  size_t _len,
-  size_t _batch_size
+  size_t _batch_size,
+  bool _allow_comma_separated
 ) noexcept
  : parser{&_parser},
    buf{_buf},
    len{_len},
    batch_size{_batch_size <= MINIMAL_BATCH_SIZE ? MINIMAL_BATCH_SIZE : _batch_size},
+    allow_comma_separated{_allow_comma_separated},
    error{SUCCESS}
    #ifdef SIMDJSON_THREADS_ENABLED
    , use_thread(_parser.threaded) // we need to make a copy because _parser.threaded can change
@@ -107,6 +109,7 @@ simdjson_inline document_stream::document_stream() noexcept
    buf{nullptr},
    len{0},
    batch_size{0},
+    allow_comma_separated{false},
    error{UNINITIALIZED}
    #ifdef SIMDJSON_THREADS_ENABLED
    , use_thread(false)
@@ -290,6 +293,8 @@ inline void document_stream::next_document() noexcept {
  if (error) { return; }
  // Always set depth=1 at the start of document
  doc.iter._depth = 1;
+  // consume comma if comma separated is allowed
+  if (allow_comma_separated) { doc.iter.consume_character(','); }
  // Resets the string buffer at the beginning, thus invalidating the strings.
  doc.iter._string_buf_loc = parser->string_buf.get();
  doc.iter._root = doc.iter.position();
@@ -222,7 +222,8 @@ private:
    ondemand::parser &parser,
    const uint8_t *buf,
    size_t len,
-    size_t batch_size
+    size_t batch_size,
+    bool allow_comma_separated
  ) noexcept;

  /**
@@ -271,6 +272,7 @@ private:
  const uint8_t *buf;
  size_t len;
  size_t batch_size;
+  bool allow_comma_separated;
  /**
   * We are going to use just one document instance. The document owns
   * the json_iterator. It implies that we only ever pass a reference
@@ -21,9 +21,9 @@ simdjson_inline simdjson_result<field> field::start(const value_iterator &parent
    return field(key, parent_iter.child());
 }

-simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> field::unescaped_key() noexcept {
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> field::unescaped_key(bool allow_replacement) noexcept {
  SIMDJSON_ASSUME(first.buf != nullptr); // We would like to call .alive() but Visual Studio won't let us.
-  simdjson_result<std::string_view> answer = first.unescape(second.iter.json_iter());
+  simdjson_result<std::string_view> answer = first.unescape(second.iter.json_iter(), allow_replacement);
  first.consume();
  return answer;
 }
@@ -66,9 +66,9 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_stri
  if (error()) { return error(); }
  return first.key();
 }
-simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::field>::unescaped_key() noexcept {
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::field>::unescaped_key(bool allow_replacement) noexcept {
  if (error()) { return error(); }
-  return first.unescaped_key();
+  return first.unescaped_key(allow_replacement);
 }
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::field>::value() noexcept {
  if (error()) { return error(); }
@@ -28,7 +28,7 @@ public:
   * This consumes the key: once you have called unescaped_key(), you cannot
   * call it again nor can you call key().
   */
-  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescaped_key() noexcept;
+  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescaped_key(bool allow_replacement) noexcept;
  /**
   * Get the key as a raw_json_string. Can be used for direct comparison with
   * an unescaped C string: e.g., key() == "test".
@@ -64,7 +64,7 @@ public:
  simdjson_inline simdjson_result(error_code error) noexcept; ///< @private
  simdjson_inline simdjson_result() noexcept = default;

-  simdjson_inline simdjson_result<std::string_view> unescaped_key() noexcept;
+  simdjson_inline simdjson_result<std::string_view> unescaped_key(bool allow_replacement = false) noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> key() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> value() noexcept;
 };
@@ -208,7 +208,7 @@ inline std::string json_iterator::to_string() const noexcept {
          + std::string(" ]");
 }

-inline simdjson_result<const char *> json_iterator::current_location() noexcept {
+inline simdjson_result<const char *> json_iterator::current_location() const noexcept {
  if (!is_alive()) {    // Unrecoverable error
    if (!at_root()) {
      return reinterpret_cast<const char *>(token.peek(-1));
@@ -316,8 +316,12 @@ simdjson_inline token_position json_iterator::position() const noexcept {
  return token.position();
 }

-simdjson_inline simdjson_result<std::string_view> json_iterator::unescape(raw_json_string in) noexcept {
-  return parser->unescape(in, _string_buf_loc);
+simdjson_inline simdjson_result<std::string_view> json_iterator::unescape(raw_json_string in, bool allow_replacement) noexcept {
+  return parser->unescape(in, _string_buf_loc, allow_replacement);
+}
+
+simdjson_inline simdjson_result<std::string_view> json_iterator::unescape_wobbly(raw_json_string in) noexcept {
+  return parser->unescape_wobbly(in, _string_buf_loc);
 }

 simdjson_inline void json_iterator::reenter_child(token_position position, depth_t child_depth) noexcept {
@@ -333,6 +337,14 @@ simdjson_inline void json_iterator::reenter_child(token_position position, depth
  _depth = child_depth;
 }

+simdjson_inline error_code json_iterator::consume_character(char c) noexcept {
+  if (*peek() == c) {
+    return_current_and_advance();
+    return SUCCESS;
+  }
+  return TAPE_ERROR;
+}
+
 #if SIMDJSON_DEVELOPMENT_CHECKS

 simdjson_inline token_position json_iterator::start_position(depth_t depth) const noexcept {
@@ -354,19 +366,16 @@ simdjson_inline error_code json_iterator::optional_error(error_code _error, cons
  return _error;
 }

-template<int N>
-simdjson_warn_unused simdjson_inline bool json_iterator::copy_to_buffer(const uint8_t *json, uint32_t max_len, uint8_t (&tmpbuf)[N]) noexcept {
+
+simdjson_warn_unused simdjson_inline bool json_iterator::copy_to_buffer(const uint8_t *json, uint32_t max_len, uint8_t *tmpbuf, size_t N) noexcept {
+  // This function is not expected to be called in performance-sensitive settings.
  // Let us guard against silly cases:
  if((N < max_len) || (N == 0)) { return false; }
-  // Truncate whitespace to fit the buffer.
-  if (max_len > N-1) {
-    // if (jsoncharutils::is_not_structural_or_whitespace(json[N-1])) { return false; }
-    max_len = N-1;
-  }
-
  // Copy to the buffer.
  std::memcpy(tmpbuf, json, max_len);
-  tmpbuf[max_len] = ' ';
+  if(N > max_len) { // We pad whatever remains with ' '.
+    std::memset(tmpbuf + max_len, ' ', N - max_len);
+  }
  return true;
 }

@@ -238,7 +238,12 @@ public:
   */
  simdjson_inline error_code optional_error(error_code error, const char *message) noexcept;

-  template<int N> simdjson_warn_unused simdjson_inline bool copy_to_buffer(const uint8_t *json, uint32_t max_len, uint8_t (&tmpbuf)[N]) noexcept;
+  /**
+   * Take an input in json containing max_len characters and attempt to copy it over to tmpbuf, a buffer with
+   * N bytes of capacity. It will return false if N is too small (smaller than max_len) of if it is zero.
+   * The buffer (tmpbuf) is padded with space characters.
+   */
+  simdjson_warn_unused simdjson_inline bool copy_to_buffer(const uint8_t *json, uint32_t max_len, uint8_t *tmpbuf, size_t N) noexcept;

  simdjson_inline token_position position() const noexcept;
  /**
@@ -246,9 +251,11 @@ public:
   * Each raw_json_string should be unescaped once, or else the string buffer might
   * overflow.
   */
-  simdjson_inline simdjson_result<std::string_view> unescape(raw_json_string in) noexcept;
+  simdjson_inline simdjson_result<std::string_view> unescape(raw_json_string in, bool allow_replacement) noexcept;
+  simdjson_inline simdjson_result<std::string_view> unescape_wobbly(raw_json_string in) noexcept;
  simdjson_inline void reenter_child(token_position position, depth_t child_depth) noexcept;

+  simdjson_inline error_code consume_character(char c) noexcept;
 #if SIMDJSON_DEVELOPMENT_CHECKS
  simdjson_inline token_position start_position(depth_t depth) const noexcept;
  simdjson_inline void set_start_position(depth_t depth, token_position position) noexcept;
@@ -260,7 +267,7 @@ public:
  /**
   * Returns the current location in the document if in bounds.
   */
-  inline simdjson_result<const char *> current_location() noexcept;
+  inline simdjson_result<const char *> current_location() const noexcept;

  /**
   * Updates this json iterator so that it is back at the beginning of the document,
@@ -291,8 +298,8 @@ protected:
  friend class raw_json_string;
  friend class parser;
  friend class value_iterator;
-  friend simdjson_inline void logger::log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta) noexcept;
-  friend simdjson_inline void logger::log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail) noexcept;
+  friend simdjson_inline void logger::log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta, logger::log_level level) noexcept;
+  friend simdjson_inline void logger::log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail, logger::log_level level) noexcept;
 }; // json_iterator

 } // namespace ondemand
@@ -1,3 +1,4 @@
+#include <memory>
 namespace simdjson {
 namespace SIMDJSON_IMPLEMENTATION {
 namespace ondemand {
@@ -18,36 +19,68 @@ static inline char printable_char(char c) {
  }
 }

+static inline log_level get_log_level_from_env()
+{
+  SIMDJSON_PUSH_DISABLE_WARNINGS
+  SIMDJSON_DISABLE_DEPRECATED_WARNING // Disable CRT_SECURE warning on MSVC: manually verified this is safe
+  char *lvl = getenv("SIMDJSON_LOG_LEVEL");
+  SIMDJSON_POP_DISABLE_WARNINGS
+  if (lvl && simdjson_strcasecmp(lvl, "ERROR") == 0) { return log_level::LOG_ERROR; }
+  return log_level::LOG_INFO;
+}
+
+static inline log_level log_threshold()
+{
+  static log_level threshold = get_log_level_from_env();
+  return threshold;
+}
+
+static inline bool should_log(log_level level)
+{
+  return level >= log_threshold();
+}
+
+template<typename... Args>
+inline std::string string_format(const std::string& format, const Args&... args)
+{
+  int size_s = std::snprintf(nullptr, 0, format.c_str(), args...) + 1;
+  auto size = static_cast<size_t>(size_s);
+  if (size <= 0) return std::string();
+  std::unique_ptr<char[]> buf(new char[size]);
+  std::snprintf(buf.get(), size, format.c_str(), args...);
+  return std::string(buf.get(), buf.get() + size - 1);
+}
+
 inline void log_event(const json_iterator &iter, const char *type, std::string_view detail, int delta, int depth_delta) noexcept {
-  log_line(iter, "", type, detail, delta, depth_delta);
+  log_line(iter, "", type, detail, delta, depth_delta, log_level::LOG_INFO);
 }

 inline void log_value(const json_iterator &iter, token_position index, depth_t depth, const char *type, std::string_view detail) noexcept {
-  log_line(iter, index, depth, "", type, detail);
+  log_line(iter, index, depth, "", type, detail, log_level::LOG_INFO);
 }
 inline void log_value(const json_iterator &iter, const char *type, std::string_view detail, int delta, int depth_delta) noexcept {
-  log_line(iter, "", type, detail, delta, depth_delta);
+  log_line(iter, "", type, detail, delta, depth_delta, log_level::LOG_INFO);
 }

 inline void log_start_value(const json_iterator &iter, token_position index, depth_t depth, const char *type, std::string_view detail) noexcept {
-  log_line(iter, index, depth, "+", type, detail);
+  log_line(iter, index, depth, "+", type, detail, log_level::LOG_INFO);
  if (LOG_ENABLED) { log_depth++; }
 }
 inline void log_start_value(const json_iterator &iter, const char *type, int delta, int depth_delta) noexcept {
-  log_line(iter, "+", type, "", delta, depth_delta);
+  log_line(iter, "+", type, "", delta, depth_delta, log_level::LOG_INFO);
  if (LOG_ENABLED) { log_depth++; }
 }

 inline void log_end_value(const json_iterator &iter, const char *type, int delta, int depth_delta) noexcept {
  if (LOG_ENABLED) { log_depth--; }
-  log_line(iter, "-", type, "", delta, depth_delta);
+  log_line(iter, "-", type, "", delta, depth_delta, log_level::LOG_INFO);
 }

 inline void log_error(const json_iterator &iter, const char *error, const char *detail, int delta, int depth_delta) noexcept {
-  log_line(iter, "ERROR: ", error, detail, delta, depth_delta);
+  log_line(iter, "ERROR: ", error, detail, delta, depth_delta, log_level::LOG_ERROR);
 }
 inline void log_error(const json_iterator &iter, token_position index, depth_t depth, const char *error, const char *detail) noexcept {
-  log_line(iter, index, depth, "ERROR: ", error, detail);
+  log_line(iter, index, depth, "ERROR: ", error, detail, log_level::LOG_ERROR);
 }

 inline void log_event(const value_iterator &iter, const char *type, std::string_view detail, int delta, int depth_delta) noexcept {
@@ -71,7 +104,7 @@ inline void log_error(const value_iterator &iter, const char *error, const char
 }

 inline void log_headers() noexcept {
-  if (LOG_ENABLED) {
+  if (LOG_ENABLED && simdjson_unlikely(should_log(log_level::LOG_INFO))) {
    // Technically a static variable is not thread-safe, but if you are using threads
    // and logging... well...
    static bool displayed_hint{false};
@@ -121,11 +154,11 @@ inline void log_headers() noexcept {
  }
 }

-inline void log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta) noexcept {
-  log_line(iter, iter.position()+delta, depth_t(iter.depth()+depth_delta), title_prefix, title, detail);
+inline void log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta, log_level level) noexcept {
+  log_line(iter, iter.position()+delta, depth_t(iter.depth()+depth_delta), title_prefix, title, detail, level);
 }
-inline void log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail) noexcept {
-  if (LOG_ENABLED) {
+inline void log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail, log_level level) noexcept {
+  if (LOG_ENABLED && simdjson_unlikely(should_log(level))) {
    const int indent = depth*2;
    const auto buf = iter.token.buf;
    printf("| %*s%s%-*s ",
@@ -7,6 +7,11 @@ class value_iterator;

 namespace logger {

+enum class log_level : int32_t {
+  LOG_INFO = 0,
+  LOG_ERROR = 1
+};
+
 #if SIMDJSON_VERBOSE_LOGGING
  static constexpr const bool LOG_ENABLED = true;
 #else
@@ -16,9 +21,11 @@ namespace logger {
 // We do not want these functions to be 'really inlined' since real inlining is
 // for performance purposes and if you are using the loggers, you do not care about
 // performance (or should not).
+template<typename... Args>
+static inline std::string string_format(const std::string& format, const Args&... args);
 static inline void log_headers() noexcept;
-static inline void log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail) noexcept;
-static inline void log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta) noexcept;
+static inline void log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail, log_level level) noexcept;
+static inline void log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta, log_level level) noexcept;
 static inline void log_event(const json_iterator &iter, const char *type, std::string_view detail="", int delta=0, int depth_delta=0) noexcept;
 static inline void log_value(const json_iterator &iter, token_position index, depth_t depth, const char *type, std::string_view detail="") noexcept;
 static inline void log_value(const json_iterator &iter, const char *type, std::string_view detail="", int delta=-1, int depth_delta=0) noexcept;
@@ -5,13 +5,23 @@ namespace ondemand {
 simdjson_inline simdjson_result<value> object::find_field_unordered(const std::string_view key) & noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_unordered_raw(key).get(has_value) );
-  if (!has_value) { return NO_SUCH_FIELD; }
+  if (!has_value) {
+    auto key_str = std::string(key.data(), key.size());
+    auto msg = logger::string_format("Cannot find key: %s", key_str.c_str());
+    logger::log_error(iter, msg.c_str());
+    return NO_SUCH_FIELD;
+  }
  return value(iter.child());
 }
 simdjson_inline simdjson_result<value> object::find_field_unordered(const std::string_view key) && noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_unordered_raw(key).get(has_value) );
-  if (!has_value) { return NO_SUCH_FIELD; }
+  if (!has_value) {
+    auto key_str = std::string(key.data(), key.size());
+    auto msg = logger::string_format("Cannot find key: %s", key_str.c_str());
+    logger::log_error(iter, msg.c_str());
+    return NO_SUCH_FIELD;
+  }
  return value(iter.child());
 }
 simdjson_inline simdjson_result<value> object::operator[](const std::string_view key) & noexcept {
@@ -23,13 +33,23 @@ simdjson_inline simdjson_result<value> object::operator[](const std::string_view
 simdjson_inline simdjson_result<value> object::find_field(const std::string_view key) & noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_raw(key).get(has_value) );
-  if (!has_value) { return NO_SUCH_FIELD; }
+  if (!has_value) {
+    auto key_str = std::string(key.data(), key.size());
+    auto msg = logger::string_format("Cannot find key: %s", key_str.c_str());
+    logger::log_error(iter, msg.c_str());
+    return NO_SUCH_FIELD;
+  }
  return value(iter.child());
 }
 simdjson_inline simdjson_result<value> object::find_field(const std::string_view key) && noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_raw(key).get(has_value) );
-  if (!has_value) { return NO_SUCH_FIELD; }
+  if (!has_value) {
+    auto key_str = std::string(key.data(), key.size());
+    auto msg = logger::string_format("Cannot find key: %s", key_str.c_str());
+    logger::log_error(iter, msg.c_str());
+    return NO_SUCH_FIELD;
+  }
  return value(iter.child());
 }

@@ -226,4 +246,8 @@ simdjson_inline  simdjson_result<size_t> simdjson_result<SIMDJSON_IMPLEMENTATION
  return first.count_fields();
 }

+simdjson_inline  simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::raw_json() noexcept {
+  if (error()) { return error(); }
+  return first.raw_json();
+}
 } // namespace simdjson
@@ -223,6 +223,7 @@ public:
  inline simdjson_result<bool> reset() noexcept;
  inline simdjson_result<bool> is_empty() noexcept;
  inline simdjson_result<size_t> count_fields() & noexcept;
+  inline simdjson_result<std::string_view> raw_json() noexcept;

 };

@@ -84,18 +84,19 @@ simdjson_warn_unused simdjson_inline simdjson_result<json_iterator> parser::iter
  return json_iterator(reinterpret_cast<const uint8_t *>(json.data()), this);
 }

-inline simdjson_result<document_stream> parser::iterate_many(const uint8_t *buf, size_t len, size_t batch_size) noexcept {
+inline simdjson_result<document_stream> parser::iterate_many(const uint8_t *buf, size_t len, size_t batch_size, bool allow_comma_separated) noexcept {
  if(batch_size < MINIMAL_BATCH_SIZE) { batch_size = MINIMAL_BATCH_SIZE; }
-  return document_stream(*this, buf, len, batch_size);
+  if(allow_comma_separated && batch_size < len) { batch_size = len; }
+  return document_stream(*this, buf, len, batch_size, allow_comma_separated);
 }
-inline simdjson_result<document_stream> parser::iterate_many(const char *buf, size_t len, size_t batch_size) noexcept {
-  return iterate_many(reinterpret_cast<const uint8_t *>(buf), len, batch_size);
+inline simdjson_result<document_stream> parser::iterate_many(const char *buf, size_t len, size_t batch_size, bool allow_comma_separated) noexcept {
+  return iterate_many(reinterpret_cast<const uint8_t *>(buf), len, batch_size, allow_comma_separated);
 }
-inline simdjson_result<document_stream> parser::iterate_many(const std::string &s, size_t batch_size) noexcept {
-  return iterate_many(s.data(), s.length(), batch_size);
+inline simdjson_result<document_stream> parser::iterate_many(const std::string &s, size_t batch_size, bool allow_comma_separated) noexcept {
+  return iterate_many(s.data(), s.length(), batch_size, allow_comma_separated);
 }
-inline simdjson_result<document_stream> parser::iterate_many(const padded_string &s, size_t batch_size) noexcept {
-  return iterate_many(s.data(), s.length(), batch_size);
+inline simdjson_result<document_stream> parser::iterate_many(const padded_string &s, size_t batch_size, bool allow_comma_separated) noexcept {
+  return iterate_many(s.data(), s.length(), batch_size, allow_comma_separated);
 }

 simdjson_inline size_t parser::capacity() const noexcept {
@@ -116,8 +117,16 @@ simdjson_inline void parser::set_max_capacity(size_t max_capacity) noexcept {
  }
 }

-simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> parser::unescape(raw_json_string in, uint8_t *&dst) const noexcept {
-  uint8_t *end = implementation->parse_string(in.buf, dst);
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> parser::unescape(raw_json_string in, uint8_t *&dst, bool allow_replacement) const noexcept {
+  uint8_t *end = implementation->parse_string(in.buf, dst, allow_replacement);
+  if (!end) { return STRING_ERROR; }
+  std::string_view result(reinterpret_cast<const char *>(dst), end-dst);
+  dst = end;
+  return result;
+}
+
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> parser::unescape_wobbly(raw_json_string in, uint8_t *&dst) const noexcept {
+  uint8_t *end = implementation->parse_wobbly_string(in.buf, dst);
  if (!end) { return STRING_ERROR; }
  std::string_view result(reinterpret_cast<const char *>(dst), end-dst);
  dst = end;
@@ -78,7 +78,9 @@ public:
   * ### REQUIRED: Buffer Padding
   *
   * The buffer must have at least SIMDJSON_PADDING extra allocated bytes. It does not matter what
-   * those bytes are initialized to, as long as they are allocated.
+   * those bytes are initialized to, as long as they are allocated. These bytes will be read: if you
+   * using a sanitizer that verifies that no uninitialized byte is read, then you should initialize the
+   * SIMDJSON_PADDING bytes to avoid runtime warnings.
   *
   * @param json The JSON to parse.
   * @param len The length of the JSON.
@@ -134,7 +136,9 @@ public:
   * ### REQUIRED: Buffer Padding
   *
   * The buffer must have at least SIMDJSON_PADDING extra allocated bytes. It does not matter what
-   * those bytes are initialized to, as long as they are allocated.
+   * those bytes are initialized to, as long as they are allocated. These bytes will be read: if you
+   * using a sanitizer that verifies that no uninitialized byte is read, then you should initialize the
+   * SIMDJSON_PADDING bytes to avoid runtime warnings.
   *
   * @param json The JSON to parse.
   *
@@ -188,7 +192,9 @@ public:
   * ### REQUIRED: Buffer Padding
   *
   * The buffer must have at least SIMDJSON_PADDING extra allocated bytes. It does not matter what
-   * those bytes are initialized to, as long as they are allocated.
+   * those bytes are initialized to, as long as they are allocated. These bytes will be read: if you
+   * using a sanitizer that verifies that no uninitialized byte is read, then you should initialize the
+   * SIMDJSON_PADDING bytes to avoid runtime warnings.
   *
   * ### Threads
   *
@@ -212,15 +218,15 @@ public:
   *         - other json errors if parsing fails. You should not rely on these errors to always the same for the
   *           same document: they may vary under runtime dispatch (so they may vary depending on your system and hardware).
   */
-  inline simdjson_result<document_stream> iterate_many(const uint8_t *buf, size_t len, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept;
+  inline simdjson_result<document_stream> iterate_many(const uint8_t *buf, size_t len, size_t batch_size = DEFAULT_BATCH_SIZE, bool allow_comma_separated = false) noexcept;
  /** @overload parse_many(const uint8_t *buf, size_t len, size_t batch_size) */
-  inline simdjson_result<document_stream> iterate_many(const char *buf, size_t len, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept;
+  inline simdjson_result<document_stream> iterate_many(const char *buf, size_t len, size_t batch_size = DEFAULT_BATCH_SIZE, bool allow_comma_separated = false) noexcept;
  /** @overload parse_many(const uint8_t *buf, size_t len, size_t batch_size) */
-  inline simdjson_result<document_stream> iterate_many(const std::string &s, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept;
-  inline simdjson_result<document_stream> iterate_many(const std::string &&s, size_t batch_size) = delete;// unsafe
+  inline simdjson_result<document_stream> iterate_many(const std::string &s, size_t batch_size = DEFAULT_BATCH_SIZE, bool allow_comma_separated = false) noexcept;
+  inline simdjson_result<document_stream> iterate_many(const std::string &&s, size_t batch_size, bool allow_comma_separated = false) = delete;// unsafe
  /** @overload parse_many(const uint8_t *buf, size_t len, size_t batch_size) */
-  inline simdjson_result<document_stream> iterate_many(const padded_string &s, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept;
-  inline simdjson_result<document_stream> iterate_many(const padded_string &&s, size_t batch_size) = delete;// unsafe
+  inline simdjson_result<document_stream> iterate_many(const padded_string &s, size_t batch_size = DEFAULT_BATCH_SIZE, bool allow_comma_separated = false) noexcept;
+  inline simdjson_result<document_stream> iterate_many(const padded_string &&s, size_t batch_size, bool allow_comma_separated = false) = delete;// unsafe

  /** @private We do not want to allow implicit conversion from C string to std::string. */
  simdjson_result<document_stream> iterate_many(const char *buf, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept = delete;
@@ -263,6 +269,31 @@ public:

  /**
   * Unescape this JSON string, replacing \\ with \, \n with newline, etc. to a user-provided buffer.
+   * The result must be valid UTF-8.
+   * The provided pointer is advanced to the end of the string by reference, and a string_view instance
+   * is returned. You can ensure that your buffer is large enough by allocating a block of memory at least
+   * as large as the input JSON plus SIMDJSON_PADDING and then unescape all strings to this one buffer.
+   *
+   * This unescape function is a low-level function. If you want a more user-friendly approach, you should
+   * avoid raw_json_string instances (e.g., by calling unescaped_key() instead of key() or get_string()
+   * instead of get_raw_json_string()).
+   *
+   * ## IMPORTANT: string_view lifetime
+   *
+   * The string_view is only valid as long as the bytes in dst.
+   *
+   * @param raw_json_string input
+   * @param dst A pointer to a buffer at least large enough to write this string as well as
+   *            an additional SIMDJSON_PADDING bytes.
+   * @param allow_replacement Whether we allow a replacement if the input string contains unmatched surrogate pairs.
+   * @return A string_view pointing at the unescaped string in dst
+   * @error STRING_ERROR if escapes are incorrect.
+   */
+  simdjson_inline simdjson_result<std::string_view> unescape(raw_json_string in, uint8_t *&dst, bool allow_replacement = false) const noexcept;
+
+  /**
+   * Unescape this JSON string, replacing \\ with \, \n with newline, etc. to a user-provided buffer.
+   * The result may not be valid UTF-8. See https://simonsapin.github.io/wtf-8/
   * The provided pointer is advanced to the end of the string by reference, and a string_view instance
   * is returned. You can ensure that your buffer is large enough by allocating a block of memory at least
   * as large as the input JSON plus SIMDJSON_PADDING and then unescape all strings to this one buffer.
@@ -281,7 +312,8 @@ public:
   * @return A string_view pointing at the unescaped string in dst
   * @error STRING_ERROR if escapes are incorrect.
   */
-  simdjson_inline simdjson_result<std::string_view> unescape(raw_json_string in, uint8_t *&dst) const noexcept;
+  simdjson_inline simdjson_result<std::string_view> unescape_wobbly(raw_json_string in, uint8_t *&dst) const noexcept;
+
 private:
  /** @private [for benchmarking access] The implementation to use */
  std::unique_ptr<internal::dom_parser_implementation> implementation{};
@@ -143,10 +143,13 @@ simdjson_unused simdjson_inline bool operator!=(std::string_view c, const raw_js
 }


-simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> raw_json_string::unescape(json_iterator &iter) const noexcept {
-  return iter.unescape(*this);
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> raw_json_string::unescape(json_iterator &iter, bool allow_replacement) const noexcept {
+  return iter.unescape(*this, allow_replacement);
 }

+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> raw_json_string::unescape_wobbly(json_iterator &iter) const noexcept {
+  return iter.unescape_wobbly(*this);
+}

 simdjson_unused simdjson_inline std::ostream &operator<<(std::ostream &out, const raw_json_string &str) noexcept {
  bool in_escape = false;
@@ -177,9 +180,12 @@ simdjson_inline simdjson_result<const char *> simdjson_result<SIMDJSON_IMPLEMENT
  if (error()) { return error(); }
  return first.raw();
 }
-simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string>::unescape(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter) const noexcept {
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string>::unescape(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter, bool allow_replacement) const noexcept {
  if (error()) { return error(); }
-  return first.unescape(iter);
+  return first.unescape(iter, allow_replacement);
+}
+simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string>::unescape_wobbly(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter) const noexcept {
+  if (error()) { return error(); }
+  return first.unescape_wobbly(iter);
 }
-
 } // namespace simdjson
@@ -139,6 +139,20 @@ private:

  /**
   * Unescape this JSON string, replacing \\ with \, \n with newline, etc.
+   * The result will be a valid UTF-8.
+   *
+   * ## IMPORTANT: string_view lifetime
+   *
+   * The string_view is only valid until the next parse() call on the parser.
+   *
+   * @param iter A json_iterator, which contains a buffer where the string will be written.
+   * @param allow_replacement Whether we allow replacement of invalid surrogate pairs.
+   */
+  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape(json_iterator &iter, bool allow_replacement) const noexcept;
+
+  /**
+   * Unescape this JSON string, replacing \\ with \, \n with newline, etc.
+   * The result may not be a valid UTF-8. https://simonsapin.github.io/wtf-8/
   *
   * ## IMPORTANT: string_view lifetime
   *
@@ -146,8 +160,7 @@ private:
   *
   * @param iter A json_iterator, which contains a buffer where the string will be written.
   */
-  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape(json_iterator &iter) const noexcept;
-
+  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape_wobbly(json_iterator &iter) const noexcept;
  const uint8_t * buf{};
  friend class object;
  friend class field;
@@ -182,7 +195,8 @@ public:
  simdjson_inline ~simdjson_result() noexcept = default; ///< @private

  simdjson_inline simdjson_result<const char *> raw() const noexcept;
-  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter) const noexcept;
+  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter, bool allow_replacement) const noexcept;
+  simdjson_inline simdjson_warn_unused simdjson_result<std::string_view> unescape_wobbly(SIMDJSON_IMPLEMENTATION::ondemand::json_iterator &iter) const noexcept;
 };

 } // namespace simdjson
@@ -116,8 +116,8 @@ protected:
  friend class json_iterator;
  friend class value_iterator;
  friend class object;
-  friend simdjson_inline void logger::log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta) noexcept;
-  friend simdjson_inline void logger::log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail) noexcept;
+  friend simdjson_inline void logger::log_line(const json_iterator &iter, const char *title_prefix, const char *title, std::string_view detail, int delta, int depth_delta, logger::log_level lvl) noexcept;
+  friend simdjson_inline void logger::log_line(const json_iterator &iter, token_position index, depth_t depth, const char *title_prefix, const char *title, std::string_view detail, logger::log_level lvl) noexcept;
 };

 } // namespace ondemand
@@ -30,8 +30,11 @@ simdjson_inline simdjson_result<object> value::start_or_resume_object() noexcept
 simdjson_inline simdjson_result<raw_json_string> value::get_raw_json_string() noexcept {
  return iter.get_raw_json_string();
 }
-simdjson_inline simdjson_result<std::string_view> value::get_string() noexcept {
-  return iter.get_string();
+simdjson_inline simdjson_result<std::string_view> value::get_string(bool allow_replacement) noexcept {
+  return iter.get_string(allow_replacement);
+}
+simdjson_inline simdjson_result<std::string_view> value::get_wobbly_string() noexcept {
+  return iter.get_wobbly_string();
 }
 simdjson_inline simdjson_result<double> value::get_double() noexcept {
  return iter.get_double();
@@ -60,7 +63,7 @@ simdjson_inline simdjson_result<bool> value::is_null() noexcept {
 template<> simdjson_inline simdjson_result<array> value::get() noexcept { return get_array(); }
 template<> simdjson_inline simdjson_result<object> value::get() noexcept { return get_object(); }
 template<> simdjson_inline simdjson_result<raw_json_string> value::get() noexcept { return get_raw_json_string(); }
-template<> simdjson_inline simdjson_result<std::string_view> value::get() noexcept { return get_string(); }
+template<> simdjson_inline simdjson_result<std::string_view> value::get() noexcept { return get_string(false); }
 template<> simdjson_inline simdjson_result<number> value::get() noexcept { return get_number(); }
 template<> simdjson_inline simdjson_result<double> value::get() noexcept { return get_double(); }
 template<> simdjson_inline simdjson_result<uint64_t> value::get() noexcept { return get_uint64(); }
@@ -88,7 +91,7 @@ simdjson_inline value::operator double() noexcept(false) {
  return get_double();
 }
 simdjson_inline value::operator std::string_view() noexcept(false) {
-  return get_string();
+  return get_string(false);
 }
 simdjson_inline value::operator raw_json_string() noexcept(false) {
  return get_raw_json_string();
@@ -298,9 +301,13 @@ simdjson_inline simdjson_result<double> simdjson_result<SIMDJSON_IMPLEMENTATION:
  if (error()) { return error(); }
  return first.get_double_in_string();
 }
-simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::get_string() noexcept {
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::get_string(bool allow_replacement) noexcept {
  if (error()) { return error(); }
-  return first.get_string();
+  return first.get_string(allow_replacement);
+}
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::get_wobbly_string() noexcept {
+  if (error()) { return error(); }
+  return first.get_wobbly_string();
 }
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::get_raw_json_string() noexcept {
  if (error()) { return error(); }
@@ -129,8 +129,23 @@ public:
   *          time it parses a document or when it is destroyed.
   * @returns INCORRECT_TYPE if the JSON value is not a string.
   */
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;

+
+  /**
+   * Cast this JSON value to a "wobbly" string.
+   *
+   * The string is may not be a valid UTF-8 string.
+   * See https://simonsapin.github.io/wtf-8/
+   *
+   * Important: a value should be consumed once. Calling get_wobbly_string() twice on the same value
+   * is an error.
+   *
+   * @returns An UTF-8 string. The string is stored in the parser and will be invalidated the next
+   *          time it parses a document or when it is destroyed.
+   * @returns INCORRECT_TYPE if the JSON value is not a string.
+   */
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  /**
   * Cast this JSON value to a raw_json_string.
   *
@@ -585,7 +600,8 @@ public:
  simdjson_inline simdjson_result<int64_t> get_int64_in_string() noexcept;
  simdjson_inline simdjson_result<double> get_double() noexcept;
  simdjson_inline simdjson_result<double> get_double_in_string() noexcept;
-  simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement = false) noexcept;
+  simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::raw_json_string> get_raw_json_string() noexcept;
  simdjson_inline simdjson_result<bool> get_bool() noexcept;
  simdjson_inline simdjson_result<bool> is_null() noexcept;
@@ -34,12 +34,17 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::start
  return true;
 }

-simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::started_root_object() noexcept {
+simdjson_warn_unused simdjson_inline error_code value_iterator::check_root_object() noexcept {
  // When in streaming mode, we cannot expect peek_last() to be the last structural element of the
  // current document. It only works in the normal mode where we have indexed a single document.
  // Note that adding a check for 'streaming' is not expensive since we only have at most
  // one root element.
  if ( ! _json_iter->streaming() ) {
+    // The following lines do not fully protect against garbage content within the
+    // object: e.g., `{"a":2} foo }`. Users concerned with garbage content should
+    // call `at_end()` on the document instance at the end of the processing to
+    // ensure that the processing has finished at the end.
+    //
    if (*_json_iter->peek_last() != '}') {
      _json_iter->abandon();
      return report_error(INCOMPLETE_ARRAY_OR_OBJECT, "missing } at end");
@@ -56,6 +61,12 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::start
      return report_error(INCOMPLETE_ARRAY_OR_OBJECT, "the document is unbalanced");
    }
  }
+  return SUCCESS;
+}
+
+simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::started_root_object() noexcept {
+  auto error = check_root_object();
+  if(error) { return error; }
  return started_object();
 }

@@ -419,12 +430,17 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::start
  return true;
 }

-simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::started_root_array() noexcept {
+simdjson_warn_unused simdjson_inline error_code value_iterator::check_root_array() noexcept {
  // When in streaming mode, we cannot expect peek_last() to be the last structural element of the
  // current document. It only works in the normal mode where we have indexed a single document.
  // Note that adding a check for 'streaming' is not expensive since we only have at most
  // one root element.
  if ( ! _json_iter->streaming() ) {
+    // The following lines do not fully protect against garbage content within the
+    // array: e.g., `[1, 2] foo]`. Users concerned with garbage content should
+    // also call `at_end()` on the document instance at the end of the processing to
+    // ensure that the processing has finished at the end.
+    //
    if (*_json_iter->peek_last() != ']') {
      _json_iter->abandon();
      return report_error(INCOMPLETE_ARRAY_OR_OBJECT, "missing ] at end");
@@ -441,6 +457,12 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::start
      return report_error(INCOMPLETE_ARRAY_OR_OBJECT, "the document is unbalanced");
    }
  }
+  return SUCCESS;
+}
+
+simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::started_root_array() noexcept {
+  auto error = check_root_array();
+  if (error) { return error; }
  return started_array();
 }

@@ -475,8 +497,11 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::parse
  return is_null_string;
 }

-simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_string() noexcept {
-  return get_raw_json_string().unescape(json_iter());
+simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_string(bool allow_replacement) noexcept {
+  return get_raw_json_string().unescape(json_iter(), allow_replacement);
+}
+simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_wobbly_string() noexcept {
+  return get_raw_json_string().unescape_wobbly(json_iter());
 }
 simdjson_warn_unused simdjson_inline simdjson_result<raw_json_string> value_iterator::get_raw_json_string() noexcept {
  auto json = peek_scalar("string");
@@ -548,7 +573,7 @@ simdjson_inline simdjson_result<bool> value_iterator::is_root_integer(bool check
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("is_root_integer");
  uint8_t tmpbuf[20+1]; // <20 digits> is the longest possible unsigned integer
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 20+1)) {
    return false; // if there are more than 20 characters, it cannot be represented as an integer.
  }
  auto answer = numberparsing::is_integer(tmpbuf);
@@ -566,7 +591,7 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::number_type>
  // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
  // number: -0.<fraction>e-308.
  uint8_t tmpbuf[1074+8+1];
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 1074+8+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters");
    return NUMBER_ERROR;
  }
@@ -581,7 +606,7 @@ simdjson_inline simdjson_result<number> value_iterator::get_root_number(bool che
  // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
  // number: -0.<fraction>e-308.
  uint8_t tmpbuf[1074+8+1];
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 1074+8+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters");
    return NUMBER_ERROR;
  }
@@ -592,8 +617,11 @@ simdjson_inline simdjson_result<number> value_iterator::get_root_number(bool che
  advance_root_scalar("number");
  return num;
 }
-simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_root_string(bool check_trailing) noexcept {
-  return get_root_raw_json_string(check_trailing).unescape(json_iter());
+simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_root_string(bool check_trailing, bool allow_replacement) noexcept {
+  return get_root_raw_json_string(check_trailing).unescape(json_iter(), allow_replacement);
+}
+simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> value_iterator::get_root_wobbly_string(bool check_trailing) noexcept {
+  return get_root_raw_json_string(check_trailing).unescape_wobbly(json_iter());
 }
 simdjson_warn_unused simdjson_inline simdjson_result<raw_json_string> value_iterator::get_root_raw_json_string(bool check_trailing) noexcept {
  auto json = peek_scalar("string");
@@ -606,7 +634,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::g
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("uint64");
  uint8_t tmpbuf[20+1]; // <20 digits> is the longest possible unsigned integer
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 20+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 20 characters");
    return NUMBER_ERROR;
  }
@@ -621,7 +649,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::g
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("uint64");
  uint8_t tmpbuf[20+1]; // <20 digits> is the longest possible unsigned integer
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 20+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 20 characters");
    return NUMBER_ERROR;
  }
@@ -636,7 +664,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::ge
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("int64");
  uint8_t tmpbuf[20+1]; // -<19 digits> is the longest possible integer
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 20+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 20 characters");
    return NUMBER_ERROR;
  }
@@ -652,7 +680,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::ge
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("int64");
  uint8_t tmpbuf[20+1]; // -<19 digits> is the longest possible integer
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 20+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 20 characters");
    return NUMBER_ERROR;
  }
@@ -671,7 +699,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get
  // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
  // number: -0.<fraction>e-308.
  uint8_t tmpbuf[1074+8+1];
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 1074+8+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters");
    return NUMBER_ERROR;
  }
@@ -690,7 +718,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get
  // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
  // number: -0.<fraction>e-308.
  uint8_t tmpbuf[1074+8+1];
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) {
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 1074+8+1)) {
    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters");
    return NUMBER_ERROR;
  }
@@ -705,7 +733,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::get_r
  auto max_len = peek_start_length();
  auto json = peek_root_scalar("bool");
  uint8_t tmpbuf[5+1];
-  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf)) { return incorrect_type_error("Not a boolean"); }
+  if (!_json_iter->copy_to_buffer(json, max_len, tmpbuf, 5+1)) { return incorrect_type_error("Not a boolean"); }
  auto result = parse_bool(tmpbuf);
  if(result.error() == SUCCESS) {
    if (check_trailing && !_json_iter->is_single_token()) { return TRAILING_CONTENT; }
@@ -918,11 +946,13 @@ simdjson_inline void value_iterator::move_at_container_start() noexcept {
 }

 simdjson_inline simdjson_result<bool> value_iterator::reset_array() noexcept {
+  if(error()) { return error(); }
  move_at_container_start();
  return started_array();
 }

 simdjson_inline simdjson_result<bool> value_iterator::reset_object() noexcept {
+  if(error()) { return error(); }
  move_at_container_start();
  return started_object();
 }
@@ -109,7 +109,14 @@ public:
   * @error TAPE_ERROR if there is no matching } at end of document
   */
  simdjson_warn_unused simdjson_inline simdjson_result<bool> start_root_object() noexcept;
-
+  /**
+   * Checks whether an object could be started from the root. May be called by start_root_object.
+   *
+   * @returns SUCCESS if it is possible to safely start an object from the root (document level).
+   * @error INCORRECT_TYPE if there is no opening {
+   * @error TAPE_ERROR if there is no matching } at end of document
+   */
+  simdjson_warn_unused simdjson_inline error_code check_root_object() noexcept;
  /**
   * Start an object iteration after the user has already checked and moved past the {.
   *
@@ -234,7 +241,14 @@ public:
   * @error TAPE_ERROR if there is no matching ] at end of document
   */
  simdjson_warn_unused simdjson_inline simdjson_result<bool> start_root_array() noexcept;
-
+  /**
+   * Checks whether an array could be started from the root. May be called by start_root_array.
+   *
+   * @returns SUCCESS if it is possible to safely start an array from the root (document level).
+   * @error INCORRECT_TYPE If there is no [.
+   * @error TAPE_ERROR if there is no matching ] at end of document
+   */
+  simdjson_warn_unused simdjson_inline error_code check_root_array() noexcept;
  /**
   * Start an array iteration, after the user has already checked and moved past the [.
   *
@@ -280,7 +294,8 @@ public:
   * @{
   */

-  simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_string() noexcept;
+  simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_string(bool allow_replacement) noexcept;
+  simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_wobbly_string() noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<raw_json_string> get_raw_json_string() noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> get_uint64() noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> get_uint64_in_string() noexcept;
@@ -295,7 +310,8 @@ public:
  simdjson_warn_unused simdjson_inline simdjson_result<number_type> get_number_type() noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<number> get_number() noexcept;

-  simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_root_string(bool check_trailing) noexcept;
+  simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_root_string(bool check_trailing, bool allow_replacement) noexcept;
+    simdjson_warn_unused simdjson_inline simdjson_result<std::string_view> get_root_wobbly_string(bool check_trailing) noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<raw_json_string> get_root_raw_json_string(bool check_trailing) noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> get_root_uint64(bool check_trailing) noexcept;
  simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> get_root_uint64_in_string(bool check_trailing) noexcept;
@@ -9,7 +9,7 @@
 #define SIMDJSON_TARGET_HASWELL
 #define SIMDJSON_UNTARGET_HASWELL
 #else
-#define SIMDJSON_TARGET_HASWELL SIMDJSON_TARGET_REGION("avx2,bmi,pclmul,lzcnt")
+#define SIMDJSON_TARGET_HASWELL SIMDJSON_TARGET_REGION("avx2,bmi,pclmul,lzcnt,popcnt")
 #define SIMDJSON_UNTARGET_HASWELL SIMDJSON_UNTARGET_REGION
 #endif

@@ -9,6 +9,10 @@ namespace {
 // but the algorithms do not end up using the returned value.
 // Sadly, sanitizers are not smart enough to figure it out.
 SIMDJSON_NO_SANITIZE_UNDEFINED
+// This function can be used safely even if not all bytes have been
+// initialized.
+// See issue https://github.com/simdjson/simdjson/issues/1965
+SIMDJSON_NO_SANITIZE_MEMORY
 simdjson_inline int trailing_zeroes(uint64_t input_num) {
 #if SIMDJSON_REGULAR_VISUAL_STUDIO
  return (int)_tzcnt_u64(input_num);
@@ -9,6 +9,9 @@ namespace haswell {

 using namespace simdjson;

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation() : simdjson::implementation(
@@ -9,7 +9,7 @@
 #define SIMDJSON_TARGET_ICELAKE
 #define SIMDJSON_UNTARGET_ICELAKE
 #else
-#define SIMDJSON_TARGET_ICELAKE SIMDJSON_TARGET_REGION("avx512f,avx512dq,avx512cd,avx512bw,avx512vbmi,avx512vbmi2,avx512vl,avx2,bmi,pclmul,lzcnt")
+#define SIMDJSON_TARGET_ICELAKE SIMDJSON_TARGET_REGION("avx512f,avx512dq,avx512cd,avx512bw,avx512vbmi,avx512vbmi2,avx512vl,avx2,bmi,pclmul,lzcnt,popcnt")
 #define SIMDJSON_UNTARGET_ICELAKE SIMDJSON_UNTARGET_REGION
 #endif

@@ -9,6 +9,10 @@ namespace {
 // but the algorithms do not end up using the returned value.
 // Sadly, sanitizers are not smart enough to figure it out.
 SIMDJSON_NO_SANITIZE_UNDEFINED
+// This function can be used safely even if not all bytes have been
+// initialized.
+// See issue https://github.com/simdjson/simdjson/issues/1965
+SIMDJSON_NO_SANITIZE_MEMORY
 simdjson_inline int trailing_zeroes(uint64_t input_num) {
 #if SIMDJSON_REGULAR_VISUAL_STUDIO
  return (int)_tzcnt_u64(input_num);
@@ -9,6 +9,9 @@ namespace icelake {

 using namespace simdjson;

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation() : simdjson::implementation(
@@ -79,13 +79,9 @@ namespace simd {

    template<int N=1>
    simdjson_inline simd8<T> prev(const simd8<T> prev_chunk) const {
-#if SIMDJSON_GCC8
     // workaround for compilers unable to figure out that 16 - N is a constant (GCC 8)
      constexpr int shift = 16 - N;
      return _mm512_alignr_epi8(*this, _mm512_permutex2var_epi64(prev_chunk, _mm512_set_epi64(13, 12, 11, 10, 9, 8, 7, 6), *this), shift);
-#else
-      return _mm512_alignr_epi8(*this, _mm512_permutex2var_epi64(prev_chunk, _mm512_set_epi64(13, 12, 11, 10, 9, 8, 7, 6), *this), 16 - N);
-#endif
    }
  };

@@ -78,9 +78,9 @@
 #define SIMDJSON_CAN_ALWAYS_RUN_WESTMERE (SIMDJSON_IMPLEMENTATION_WESTMERE && SIMDJSON_IS_X86_64 && __SSE4_2__ && __PCLMUL__)

 #ifndef SIMDJSON_IMPLEMENTATION_PPC64
-#define SIMDJSON_IMPLEMENTATION_PPC64 (SIMDJSON_IS_PPC64)
+#define SIMDJSON_IMPLEMENTATION_PPC64 (SIMDJSON_IS_PPC64 && SIMDJSON_IS_PPC64_VMX)
 #endif
-#define SIMDJSON_CAN_ALWAYS_RUN_PPC64 SIMDJSON_IMPLEMENTATION_PPC64 && SIMDJSON_IS_PPC64
+#define SIMDJSON_CAN_ALWAYS_RUN_PPC64 SIMDJSON_IMPLEMENTATION_PPC64 && SIMDJSON_IS_PPC64 && SIMDJSON_IS_PPC64_VMX

 // Default Fallback to on unless a builtin implementation has already been selected.
 #ifndef SIMDJSON_IMPLEMENTATION_FALLBACK
@@ -114,9 +114,26 @@ public:
   *
   * @param str pointer to the beginning of a valid UTF-8 JSON string, must end with an unescaped quote.
   * @param dst pointer to a destination buffer, it must point a region in memory of sufficient size.
+   * @param allow_replacement whether we allow a replacement character when the UTF-8 contains unmatched surrogate pairs.
   * @return end of the of the written region (exclusive) or nullptr in case of error.
   */
-  simdjson_warn_unused virtual uint8_t *parse_string(const uint8_t *src, uint8_t *dst) const noexcept = 0;
+  simdjson_warn_unused virtual uint8_t *parse_string(const uint8_t *src, uint8_t *dst, bool allow_replacement) const noexcept = 0;
+
+  /**
+   * Unescape a NON-valid UTF-8 string from src to dst, stopping at a final unescaped quote. There
+   * must be an unescaped quote terminating the string. It returns the final output
+   * position as pointer. In case of error (e.g., the string has bad escaped codes),
+   * then null_nullptrptr is returned. It is assumed that the output buffer is large
+   * enough. E.g., if src points at 'joe"', then dst needs to have four free bytes +
+   * SIMDJSON_PADDING bytes.
+   *
+   * Overridden by each implementation.
+   *
+   * @param str pointer to the beginning of a possibly invalid UTF-8 JSON string, must end with an unescaped quote.
+   * @param dst pointer to a destination buffer, it must point a region in memory of sufficient size.
+   * @return end of the of the written region (exclusive) or nullptr in case of error.
+   */
+  simdjson_warn_unused virtual uint8_t *parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept = 0;

  /**
   * Change the capacity of this parser.
@@ -57,7 +57,6 @@ POSSIBILITY OF SUCH DAMAGE.
 namespace simdjson {
 namespace internal {

-
 enum instruction_set {
  DEFAULT = 0x0,
  NEON = 0x1,
@@ -84,22 +83,12 @@ static inline uint32_t detect_supported_architectures() {
  return instruction_set::ALTIVEC;
 }

-#elif defined(__arm__) || defined(__aarch64__) // incl. armel, armhf, arm64
-
-#if defined(__ARM_NEON)
+#elif defined(__aarch64__) || defined(_M_ARM64)

 static inline uint32_t detect_supported_architectures() {
  return instruction_set::NEON;
 }

-#else // ARM without NEON
-
-static inline uint32_t detect_supported_architectures() {
-  return instruction_set::DEFAULT;
-}
-
-#endif
-
 #elif defined(__x86_64__) || defined(_M_AMD64) // x64


@@ -117,7 +106,10 @@ constexpr uint32_t cpuid_avx512cd_bit = 1 << 28;    ///< @private bit 28 of EBX
 constexpr uint32_t cpuid_avx512bw_bit = 1 << 30;    ///< @private bit 30 of EBX for EAX=0x7
 constexpr uint32_t cpuid_avx512vl_bit = 1U << 31;    ///< @private bit 31 of EBX for EAX=0x7
 constexpr uint32_t cpuid_avx512vbmi2_bit = 1 << 6;  ///< @private bit 6 of ECX for EAX=0x7
+constexpr uint64_t cpuid_avx256_saved = uint64_t(1) << 2; ///< @private bit 2 = AVX
+constexpr uint64_t cpuid_avx512_saved = uint64_t(7) << 5; ///< @private bits 5,6,7 = opmask, ZMM_hi256, hi16_ZMM
 constexpr uint32_t cpuid_sse42_bit = 1 << 20;       ///< @private bit 20 of ECX for EAX=0x1
+constexpr uint32_t cpuid_osxsave = (uint32_t(1) << 26) | (uint32_t(1) << 27); ///< @private bits 26+27 of ECX for EAX=0x1
 constexpr uint32_t cpuid_pclmulqdq_bit = 1 << 1;    ///< @private bit  1 of ECX for EAX=0x1
 }

@@ -127,7 +119,7 @@ static inline void cpuid(uint32_t *eax, uint32_t *ebx, uint32_t *ecx,
                         uint32_t *edx) {
 #if defined(_MSC_VER)
  int cpu_info[4];
-  __cpuid(cpu_info, *eax);
+  __cpuidex(cpu_info, *eax, *ecx);
  *eax = cpu_info[0];
  *ebx = cpu_info[1];
  *ecx = cpu_info[2];
@@ -145,10 +137,48 @@ static inline void cpuid(uint32_t *eax, uint32_t *ebx, uint32_t *ecx,
 #endif
 }

+
+static inline uint64_t xgetbv() {
+#if defined(_MSC_VER)
+  return _xgetbv(0);
+#else
+  uint32_t xcr0_lo, xcr0_hi;
+  asm volatile("xgetbv\n\t" : "=a" (xcr0_lo), "=d" (xcr0_hi) : "c" (0));
+  return xcr0_lo | (uint64_t(xcr0_hi) << 32);
+#endif
+}
+
 static inline uint32_t detect_supported_architectures() {
  uint32_t eax, ebx, ecx, edx;
  uint32_t host_isa = 0x0;

+  // EBX for EAX=0x1
+  eax = 0x1;
+  ecx = 0x0;
+  cpuid(&eax, &ebx, &ecx, &edx);
+
+  if (ecx & cpuid_sse42_bit) {
+    host_isa |= instruction_set::SSE42;
+  } else {
+    return host_isa; // everything after is redundant
+  }
+
+  if (ecx & cpuid_pclmulqdq_bit) {
+    host_isa |= instruction_set::PCLMULQDQ;
+  }
+
+
+  if ((ecx & cpuid_osxsave) != cpuid_osxsave) {
+    return host_isa;
+  }
+
+  // xgetbv for checking if the OS saves registers
+  uint64_t xcr0 = xgetbv();
+
+  if ((xcr0 & cpuid_avx256_saved) == 0) {
+    return host_isa;
+  }
+
  // ECX for EAX=0x7
  eax = 0x7;
  ecx = 0x0;
@@ -164,6 +194,10 @@ static inline uint32_t detect_supported_architectures() {
    host_isa |= instruction_set::BMI2;
  }

+  if (!((xcr0 & cpuid_avx512_saved) == cpuid_avx512_saved)) {
+     return host_isa;
+  }
+
  if (ebx & cpuid_avx512f_bit) {
    host_isa |= instruction_set::AVX512F;
  }
@@ -200,18 +234,6 @@ static inline uint32_t detect_supported_architectures() {
    host_isa |= instruction_set::AVX512VBMI2;
  }

-  // EBX for EAX=0x1
-  eax = 0x1;
-  cpuid(&eax, &ebx, &ecx, &edx);
-
-  if (ecx & cpuid_sse42_bit) {
-    host_isa |= instruction_set::SSE42;
-  }
-
-  if (ecx & cpuid_pclmulqdq_bit) {
-    host_isa |= instruction_set::PCLMULQDQ;
-  }
-
  return host_isa;
 }
 #else // fallback
@@ -12,7 +12,7 @@
 #define NONSTD_SV_LITE_H_INCLUDED

 #define string_view_lite_MAJOR  1
-#define string_view_lite_MINOR  6
+#define string_view_lite_MINOR  7
 #define string_view_lite_PATCH  0

 #define string_view_lite_VERSION  nssv_STRINGIFY(string_view_lite_MAJOR) "." nssv_STRINGIFY(string_view_lite_MINOR) "." nssv_STRINGIFY(string_view_lite_PATCH)
@@ -72,7 +72,7 @@
 // Control presence of exception handling (try and auto discover):

 #ifndef nssv_CONFIG_NO_EXCEPTIONS
-# if _MSC_VER
+# if defined(_MSC_VER)
 #  include <cstddef>    // for _HAS_EXCEPTIONS
 # endif
 # if defined(__cpp_exceptions) || defined(__EXCEPTIONS) || (_HAS_EXCEPTIONS)
@@ -82,7 +82,7 @@
 # endif
 #endif

-// C++ language version detection (C++20 is speculative):
+// C++ language version detection (C++23 is speculative):
 // Note: VC14.0/1900 (VS2015) lacks too much from C++14.

 #ifndef   nssv_CPLUSPLUS
@@ -98,7 +98,8 @@
 #define nssv_CPP11_OR_GREATER_ ( nssv_CPLUSPLUS >= 201103L )
 #define nssv_CPP14_OR_GREATER  ( nssv_CPLUSPLUS >= 201402L )
 #define nssv_CPP17_OR_GREATER  ( nssv_CPLUSPLUS >= 201703L )
-#define nssv_CPP20_OR_GREATER  ( nssv_CPLUSPLUS >= 202000L )
+#define nssv_CPP20_OR_GREATER  ( nssv_CPLUSPLUS >= 202002L )
+#define nssv_CPP23_OR_GREATER  ( nssv_CPLUSPLUS >= 202300L )

 // use C++17 std::string_view if available and requested:

@@ -288,6 +289,8 @@ using std::operator<<;
 #define nssv_HAVE_CONSTEXPR_11          nssv_CPP11_140
 #define nssv_HAVE_EXPLICIT_CONVERSION   nssv_CPP11_140
 #define nssv_HAVE_INLINE_NAMESPACE      nssv_CPP11_140
+#define nssv_HAVE_IS_DEFAULT            nssv_CPP11_140
+#define nssv_HAVE_IS_DELETE             nssv_CPP11_140
 #define nssv_HAVE_NOEXCEPT              nssv_CPP11_140
 #define nssv_HAVE_NULLPTR               nssv_CPP11_100
 #define nssv_HAVE_REF_QUALIFIER         nssv_CPP11_140
@@ -469,6 +472,17 @@ nssv_DISABLE_MSVC_WARNINGS( 4455 26481 26472 )

 namespace nonstd { namespace sv_lite {

+//
+// basic_string_view declaration:
+//
+
+template
+<
+    class CharT,
+    class Traits = std::char_traits<CharT>
+>
+class basic_string_view;
+
 namespace detail {

 // support constexpr comparison in C++14;
@@ -536,14 +550,33 @@ inline nssv_constexpr14 std::size_t length( CharT * s )

 #endif // OPTIMIZE

-} // namespace detail
+#if nssv_CPP11_OR_GREATER && ! nssv_CPP17_OR_GREATER
+#if defined(__OPTIMIZE__)

-template
-<
-    class CharT,
-    class Traits = std::char_traits<CharT>
->
-class basic_string_view;
+// gcc, clang provide __OPTIMIZE__
+// Expect tail call optimization to make search() non-recursive:
+
+template< class CharT, class Traits = std::char_traits<CharT> >
+constexpr const CharT* search( basic_string_view<CharT, Traits> haystack, basic_string_view<CharT, Traits> needle )
+{
+    return haystack.starts_with( needle ) ? haystack.begin() :
+        haystack.empty() ? haystack.end() : search( haystack.substr(1), needle );
+}
+
+#else // OPTIMIZE
+
+// non-recursive:
+
+template< class CharT, class Traits = std::char_traits<CharT> >
+constexpr const CharT* search( basic_string_view<CharT, Traits> haystack, basic_string_view<CharT, Traits> needle )
+{
+    return std::search( haystack.begin(), haystack.end(), needle.begin(), needle.end() );
+}
+
+#endif // OPTIMIZE
+#endif // nssv_CPP11_OR_GREATER && ! nssv_CPP17_OR_GREATER
+
+} // namespace detail

 //
 // basic_string_view:
@@ -570,7 +603,7 @@ public:
    typedef const_pointer iterator;
    typedef const_pointer const_iterator;
    typedef std::reverse_iterator< const_iterator > reverse_iterator;
-    typedef	std::reverse_iterator< const_iterator > const_reverse_iterator;
+    typedef std::reverse_iterator< const_iterator > const_reverse_iterator;

    typedef std::size_t     size_type;
    typedef std::ptrdiff_t  difference_type;
@@ -607,6 +640,14 @@ public:
 #endif
    {}

+#if  nssv_HAVE_NULLPTR
+# if nssv_HAVE_IS_DELETE
+    nssv_constexpr basic_string_view( std::nullptr_t ) nssv_noexcept = delete;
+# else
+    private: nssv_constexpr basic_string_view( std::nullptr_t ) nssv_noexcept; public:
+# endif
+#endif
+
    // Assignment:

 #if nssv_CPP11_OR_GREATER
@@ -804,25 +845,30 @@ public:

    // find(), 4x:

-    nssv_constexpr14 size_type find( basic_string_view v, size_type pos = 0 ) const nssv_noexcept  // (1)
+    nssv_constexpr size_type find( basic_string_view v, size_type pos = 0 ) const nssv_noexcept  // (1)
    {
        return assert( v.size() == 0 || v.data() != nssv_nullptr )
            , pos >= size()
-            ? npos
-            : to_pos( std::search( cbegin() + pos, cend(), v.cbegin(), v.cend(), Traits::eq ) );
+            ? npos : to_pos(
+#if nssv_CPP11_OR_GREATER && ! nssv_CPP17_OR_GREATER
+                detail::search( substr(pos), v )
+#else
+                std::search( cbegin() + pos, cend(), v.cbegin(), v.cend(), Traits::eq )
+#endif
+            );
    }

-    nssv_constexpr14 size_type find( CharT c, size_type pos = 0 ) const nssv_noexcept  // (2)
+    nssv_constexpr size_type find( CharT c, size_type pos = 0 ) const nssv_noexcept  // (2)
    {
        return find( basic_string_view( &c, 1 ), pos );
    }

-    nssv_constexpr14 size_type find( CharT const * s, size_type pos, size_type n ) const  // (3)
+    nssv_constexpr size_type find( CharT const * s, size_type pos, size_type n ) const  // (3)
    {
        return find( basic_string_view( s, n ), pos );
    }

-    nssv_constexpr14 size_type find( CharT const * s, size_type pos = 0 ) const  // (4)
+    nssv_constexpr size_type find( CharT const * s, size_type pos = 0 ) const  // (4)
    {
        return find( basic_string_view( s ), pos );
    }
@@ -1381,7 +1427,7 @@ Stream & write_to_stream( Stream & os, View const & sv )
 {
    typename Stream::sentry sentry( os );

-    if ( !os )
+    if ( !sentry )
        return os;

    const std::streamsize length = static_cast<std::streamsize>( sv.length() );
@@ -35,9 +35,8 @@ inline char *allocate_padded_buffer(size_t length) noexcept {
  if (padded_buffer == nullptr) {
    return nullptr;
  }
-  // We write zeroes in the padded region to avoid having uninitized
-  // garbage. If nothing else, garbage getting read might trigger a
-  // warning in a memory checking.
+  // We write nulls in the padded region to avoid having uninitialized
+  // content which may trigger warning for some sanitizers
  std::memset(padded_buffer + length, 0, totalpaddedlength - length);
  return padded_buffer;
 } // allocate_padded_buffer()
@@ -67,7 +66,7 @@ inline padded_string::padded_string(std::string_view sv_) noexcept
    : viable_size(sv_.size()), data_ptr(internal::allocate_padded_buffer(sv_.size())) {
  if(simdjson_unlikely(!data_ptr)) {
    //allocation failed or zero size
-    viable_size=0;
+    viable_size = 0;
    return;
  }
  if (sv_.size()) {
@@ -32,19 +32,14 @@
 #endif // __clang__
 #endif // _MSC_VER

-#if SIMDJSON_REGULAR_VISUAL_STUDIO
-// https://en.wikipedia.org/wiki/C_alternative_tokens
-// This header should have no effect, except maybe
-// under Visual Studio.
-#include <iso646.h>
-#endif
-
 #if defined(__x86_64__) || defined(_M_AMD64)
 #define SIMDJSON_IS_X86_64 1
 #elif defined(__aarch64__) || defined(_M_ARM64)
 #define SIMDJSON_IS_ARM64 1
 #elif defined(__PPC64__) || defined(_M_PPC64)
-#define SIMDJSON_IS_PPC64 1
+#if defined(__ALTIVEC__)
+#define SIMDJSON_IS_PPC64_VMX 1
+#endif // defined(__ALTIVEC__)
 #else
 #define SIMDJSON_IS_32BITS 1

@@ -148,6 +143,19 @@ use a 64-bit target such as x64, 64-bit ARM or 64-bit PPC.")
 #define SIMDJSON_NO_SANITIZE_UNDEFINED
 #endif

+
+#if defined(__clang__) || defined(__GNUC__)
+#if defined(__has_feature)
+#  if __has_feature(memory_sanitizer)
+#define SIMDJSON_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
+#  endif // if __has_feature(memory_sanitizer)
+#endif // defined(__has_feature)
+#endif
+// make sure it is defined as 'nothing' if it is unapplicable.
+#ifndef SIMDJSON_NO_SANITIZE_MEMORY
+#define SIMDJSON_NO_SANITIZE_MEMORY
+#endif
+
 #if SIMDJSON_VISUAL_STUDIO
 // This is one case where we do not distinguish between
 // regular visual studio and clang under visual studio.
@@ -162,8 +170,9 @@ use a 64-bit target such as x64, 64-bit ARM or 64-bit PPC.")
 #define simdjson_strncasecmp strncasecmp
 #endif

-#ifdef NDEBUG
-
+#if defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) && !defined(_DEBUG))
+// If NDEBUG is set, or __OPTIMIZE__ is set, or we are under MSVC in release mode,
+// then do away with asserts and use __assume.
 #if SIMDJSON_VISUAL_STUDIO
 #define SIMDJSON_UNREACHABLE() __assume(0)
 #define SIMDJSON_ASSUME(COND) __assume(COND)
@@ -172,8 +181,8 @@ use a 64-bit target such as x64, 64-bit ARM or 64-bit PPC.")
 #define SIMDJSON_ASSUME(COND) do { if (!(COND)) __builtin_unreachable(); } while (0)
 #endif

-#else // NDEBUG
-
+#else // defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) && !defined(_DEBUG))
+// This should only ever be enabled in debug mode.
 #define SIMDJSON_UNREACHABLE() assert(0);
 #define SIMDJSON_ASSUME(COND) assert(COND)

@@ -9,6 +9,10 @@ namespace {
 // but the algorithms do not end up using the returned value.
 // Sadly, sanitizers are not smart enough to figure it out.
 SIMDJSON_NO_SANITIZE_UNDEFINED
+// This function can be used safely even if not all bytes have been
+// initialized.
+// See issue https://github.com/simdjson/simdjson/issues/1965
+SIMDJSON_NO_SANITIZE_MEMORY
 simdjson_inline int trailing_zeroes(uint64_t input_num) {
 #if SIMDJSON_REGULAR_VISUAL_STUDIO
  unsigned long ret;
@@ -12,6 +12,9 @@ using namespace simdjson;
 using namespace simdjson::dom;
 } // namespace

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation()
@@ -4,7 +4,7 @@
 #define SIMDJSON_SIMDJSON_VERSION_H

 /** The version of simdjson being used (major.minor.revision) */
-#define SIMDJSON_VERSION "3.1.0"
+#define SIMDJSON_VERSION "3.2.0"

 namespace simdjson {
 enum {
@@ -15,7 +15,7 @@ enum {
  /**
   * The minor version (major.MINOR.revision) of simdjson being used.
   */
-  SIMDJSON_VERSION_MINOR = 1,
+  SIMDJSON_VERSION_MINOR = 2,
  /**
   * The revision (major.minor.REVISION) of simdjson being used.
   */
@@ -9,7 +9,7 @@
 #define SIMDJSON_TARGET_WESTMERE
 #define SIMDJSON_UNTARGET_WESTMERE
 #else
-#define SIMDJSON_TARGET_WESTMERE SIMDJSON_TARGET_REGION("sse4.2,pclmul")
+#define SIMDJSON_TARGET_WESTMERE SIMDJSON_TARGET_REGION("sse4.2,pclmul,popcnt")
 #define SIMDJSON_UNTARGET_WESTMERE SIMDJSON_UNTARGET_REGION
 #endif

@@ -9,6 +9,10 @@ namespace {
 // but the algorithms do not end up using the returned value.
 // Sadly, sanitizers are not smart enough to figure it out.
 SIMDJSON_NO_SANITIZE_UNDEFINED
+// This function can be used safely even if not all bytes have been
+// initialized.
+// See issue https://github.com/simdjson/simdjson/issues/1965
+SIMDJSON_NO_SANITIZE_MEMORY
 simdjson_inline int trailing_zeroes(uint64_t input_num) {
 #if SIMDJSON_REGULAR_VISUAL_STUDIO
  unsigned long ret;
@@ -12,6 +12,9 @@ using namespace simdjson;
 using namespace simdjson::dom;
 }

+/**
+ * @private
+ */
 class implementation final : public simdjson::implementation {
 public:
  simdjson_inline implementation() : simdjson::implementation("westmere", "Intel/AMD SSE4.2", internal::instruction_set::SSE42 | internal::instruction_set::PCLMULQDQ) {}
@@ -112,7 +112,8 @@ def dofile(fid, prepath, filename):
                    print(f"// redefining SIMDJSON_IMPLEMENTATION to \"{current_implementation}\"\n// {line}", file=fid)
                elif undefines_simdjson_implementation.search(line):
                    # Don't include #undef SIMDJSON_IMPLEMENTATION since we're handling it ourselves
-                    print(f"// {line}")
+                    # print(f"// {line}")
+                    pass
                else:
                    # copy the line, with SIMDJSON_IMPLEMENTATION replace to what it is currently defined to
                    print(uses_simdjson_implementation.sub(current_implementation+"\\1",line), file=fid)
@@ -152,8 +152,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return arm64::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool allow_replacement) const noexcept {
+  return arm64::stringparsing::parse_string(src, dst, allow_replacement);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return arm64::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -360,8 +360,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return fallback::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool replacement_char) const noexcept {
+  return fallback::stringparsing::parse_string(src, dst, replacement_char);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return fallback::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -241,7 +241,9 @@ simdjson_inline void json_structural_indexer::step<64>(const uint8_t *block, buf

 simdjson_inline void json_structural_indexer::next(const simd::simd8x64<uint8_t>& in, const json_block& block, size_t idx) {
  uint64_t unescaped = in.lteq(0x1F);
+#if SIMDJSON_UTF8VALIDATION
  checker.check_next_input(in);
+#endif
  indexer.write(uint32_t(idx-64), prev_structurals); // Output *last* iteration's structurals to the parser
  prev_structurals = block.structural_start();
  unescaped_chars_error |= block.non_quote_inside_string(unescaped);
@@ -41,7 +41,9 @@ static const uint8_t escape_map[256] = {
 // We work in little-endian then swap at write time
 simdjson_warn_unused
 simdjson_inline bool handle_unicode_codepoint(const uint8_t **src_ptr,
-                                            uint8_t **dst_ptr) {
+                                            uint8_t **dst_ptr, bool allow_replacement) {
+  // Use the default Unicode Character 'REPLACEMENT CHARACTER' (U+FFFD)
+  constexpr uint32_t substitution_code_point = 0xfffd;
  // jsoncharutils::hex_to_u32_nocheck fills high 16 bits of the return value with 1s if the
  // conversion isn't valid; we defer the check for this to inside the
  // multilingual plane check
@@ -56,33 +58,79 @@ simdjson_inline bool handle_unicode_codepoint(const uint8_t **src_ptr,
    const uint8_t *src_data = *src_ptr;
    /* Compiler optimizations convert this to a single 16-bit load and compare on most platforms */
    if (((src_data[0] << 8) | src_data[1]) != ((static_cast<uint8_t> ('\\') << 8) | static_cast<uint8_t> ('u'))) {
-      return false;
-    }
-    uint32_t code_point_2 = jsoncharutils::hex_to_u32_nocheck(src_data + 2);
+      if(!allow_replacement) { return false; }
+      code_point = substitution_code_point;
+    } else {
+      uint32_t code_point_2 = jsoncharutils::hex_to_u32_nocheck(src_data + 2);

-    // We have already checked that the high surrogate is valid and
-    // (code_point - 0xd800) < 1024.
-    //
-    // Check that code_point_2 is in the range 0xdc00..0xdfff
-    // and that code_point_2 was parsed from valid hex.
-    uint32_t low_bit = code_point_2 - 0xdc00;
-    if (low_bit >> 10) {
-      return false;
-    }
+      // We have already checked that the high surrogate is valid and
+      // (code_point - 0xd800) < 1024.
+      //
+      // Check that code_point_2 is in the range 0xdc00..0xdfff
+      // and that code_point_2 was parsed from valid hex.
+      uint32_t low_bit = code_point_2 - 0xdc00;
+      if (low_bit >> 10) {
+        if(!allow_replacement) { return false; }
+        code_point = substitution_code_point;
+      } else {
+        code_point =  (((code_point - 0xd800) << 10) | low_bit) + 0x10000;
+        *src_ptr += 6;
+      }

-    code_point =
-        (((code_point - 0xd800) << 10) | low_bit) + 0x10000;
-    *src_ptr += 6;
+    }
  } else if (code_point >= 0xdc00 && code_point <= 0xdfff) {
      // If we encounter a low surrogate (not preceded by a high surrogate)
      // then we have an error.
-      return false;
+      if(!allow_replacement) { return false; }
+      code_point = substitution_code_point;
  }
  size_t offset = jsoncharutils::codepoint_to_utf8(code_point, *dst_ptr);
  *dst_ptr += offset;
  return offset > 0;
 }

+
+// handle a unicode codepoint using the wobbly convention
+// https://simonsapin.github.io/wtf-8/
+// write appropriate values into dest
+// src will advance 6 bytes or 12 bytes
+// dest will advance a variable amount (return via pointer)
+// return true if the unicode codepoint was valid
+// We work in little-endian then swap at write time
+simdjson_warn_unused
+simdjson_inline bool handle_unicode_codepoint_wobbly(const uint8_t **src_ptr,
+                                            uint8_t **dst_ptr) {
+  // It is not ideal that this function is nearly identical to handle_unicode_codepoint.
+  //
+  // jsoncharutils::hex_to_u32_nocheck fills high 16 bits of the return value with 1s if the
+  // conversion isn't valid; we defer the check for this to inside the
+  // multilingual plane check
+  uint32_t code_point = jsoncharutils::hex_to_u32_nocheck(*src_ptr + 2);
+  *src_ptr += 6;
+  // If we found a high surrogate, we must
+  // check for low surrogate for characters
+  // outside the Basic
+  // Multilingual Plane.
+  if (code_point >= 0xd800 && code_point < 0xdc00) {
+    const uint8_t *src_data = *src_ptr;
+    /* Compiler optimizations convert this to a single 16-bit load and compare on most platforms */
+    if (((src_data[0] << 8) | src_data[1]) == ((static_cast<uint8_t> ('\\') << 8) | static_cast<uint8_t> ('u'))) {
+      uint32_t code_point_2 = jsoncharutils::hex_to_u32_nocheck(src_data + 2);
+      uint32_t low_bit = code_point_2 - 0xdc00;
+      if ((low_bit >> 10) ==  0) {
+        code_point =
+          (((code_point - 0xd800) << 10) | low_bit) + 0x10000;
+        *src_ptr += 6;
+      }
+    }
+  }
+
+  size_t offset = jsoncharutils::codepoint_to_utf8(code_point, *dst_ptr);
+  *dst_ptr += offset;
+  return offset > 0;
+}
+
+
 /**
 * Unescape a valid UTF-8 string from src to dst, stopping at a final unescaped quote. There
 * must be an unescaped quote terminating the string. It returns the final output
@@ -91,7 +139,7 @@ simdjson_inline bool handle_unicode_codepoint(const uint8_t **src_ptr,
 * enough. E.g., if src points at 'joe"', then dst needs to have four free bytes +
 * SIMDJSON_PADDING bytes.
 */
-simdjson_warn_unused simdjson_inline uint8_t *parse_string(const uint8_t *src, uint8_t *dst) {
+simdjson_warn_unused simdjson_inline uint8_t *parse_string(const uint8_t *src, uint8_t *dst, bool allow_replacement) {
  while (1) {
    // Copy the next n bytes, and find the backslash and quote in them.
    auto bs_quote = backslash_and_quote::copy_and_find(src, dst);
@@ -110,7 +158,54 @@ simdjson_warn_unused simdjson_inline uint8_t *parse_string(const uint8_t *src, u
           within the unicode codepoint handling code. */
        src += bs_dist;
        dst += bs_dist;
-        if (!handle_unicode_codepoint(&src, &dst)) {
+        if (!handle_unicode_codepoint(&src, &dst, allow_replacement)) {
+          return nullptr;
+        }
+      } else {
+        /* simple 1:1 conversion. Will eat bs_dist+2 characters in input and
+         * write bs_dist+1 characters to output
+         * note this may reach beyond the part of the buffer we've actually
+         * seen. I think this is ok */
+        uint8_t escape_result = escape_map[escape_char];
+        if (escape_result == 0u) {
+          return nullptr; /* bogus escape value is an error */
+        }
+        dst[bs_dist] = escape_result;
+        src += bs_dist + 2;
+        dst += bs_dist + 1;
+      }
+    } else {
+      /* they are the same. Since they can't co-occur, it means we
+       * encountered neither. */
+      src += backslash_and_quote::BYTES_PROCESSED;
+      dst += backslash_and_quote::BYTES_PROCESSED;
+    }
+  }
+  /* can't be reached */
+  return nullptr;
+}
+
+simdjson_warn_unused simdjson_inline uint8_t *parse_wobbly_string(const uint8_t *src, uint8_t *dst) {
+  // It is not ideal that this function is nearly identical to parse_string.
+  while (1) {
+    // Copy the next n bytes, and find the backslash and quote in them.
+    auto bs_quote = backslash_and_quote::copy_and_find(src, dst);
+    // If the next thing is the end quote, copy and return
+    if (bs_quote.has_quote_first()) {
+      // we encountered quotes first. Move dst to point to quotes and exit
+      return dst + bs_quote.quote_index();
+    }
+    if (bs_quote.has_backslash()) {
+      /* find out where the backspace is */
+      auto bs_dist = bs_quote.backslash_index();
+      uint8_t escape_char = src[bs_dist + 1];
+      /* we encountered backslash first. Handle backslash */
+      if (escape_char == 'u') {
+        /* move src/dst up to the start; they will be further adjusted
+           within the unicode codepoint handling code. */
+        src += bs_dist;
+        dst += bs_dist;
+        if (!handle_unicode_codepoint_wobbly(&src, &dst)) {
          return nullptr;
        }
      } else {
@@ -145,7 +145,7 @@ simdjson_inline tape_builder::tape_builder(dom::document &doc) noexcept : tape{d
 simdjson_warn_unused simdjson_inline error_code tape_builder::visit_string(json_iterator &iter, const uint8_t *value, bool key) noexcept {
  iter.log_value(key ? "key" : "string");
  uint8_t *dst = on_start_string(iter);
-  dst = stringparsing::parse_string(value+1, dst);
+  dst = stringparsing::parse_string(value+1, dst, false); // We do not allow replacement when the escape characters are invalid.
  if (dst == nullptr) {
    iter.log_error("Invalid escape in string");
    return STRING_ERROR;
@@ -153,8 +153,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return haswell::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool replacement_char) const noexcept {
+  return haswell::stringparsing::parse_string(src, dst, replacement_char);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return haswell::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -199,8 +199,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return icelake::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool replacement_char) const noexcept {
+  return icelake::stringparsing::parse_string(src, dst, replacement_char);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return icelake::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -4,37 +4,37 @@ namespace simdjson {
 namespace internal {

  SIMDJSON_DLLIMPORTEXPORT const error_code_info error_codes[] {
-    { SUCCESS, "No error" },
-    { CAPACITY, "This parser can't support a document that big" },
-    { MEMALLOC, "Error allocating memory, we're most likely out of memory" },
-    { TAPE_ERROR, "The JSON document has an improper structure: missing or superfluous commas, braces, missing keys, etc." },
-    { DEPTH_ERROR, "The JSON document was too deep (too many nested objects and arrays)" },
-    { STRING_ERROR, "Problem while parsing a string" },
-    { T_ATOM_ERROR, "Problem while parsing an atom starting with the letter 't'" },
-    { F_ATOM_ERROR, "Problem while parsing an atom starting with the letter 'f'" },
-    { N_ATOM_ERROR, "Problem while parsing an atom starting with the letter 'n'" },
-    { NUMBER_ERROR, "Problem while parsing a number" },
-    { UTF8_ERROR, "The input is not valid UTF-8" },
-    { UNINITIALIZED, "Uninitialized" },
-    { EMPTY, "Empty: no JSON found" },
-    { UNESCAPED_CHARS, "Within strings, some characters must be escaped, we found unescaped characters" },
-    { UNCLOSED_STRING, "A string is opened, but never closed." },
-    { UNSUPPORTED_ARCHITECTURE, "simdjson does not have an implementation supported by this CPU architecture (perhaps it's a non-SIMD CPU?)." },
-    { INCORRECT_TYPE, "The JSON element does not have the requested type." },
-    { NUMBER_OUT_OF_RANGE, "The JSON number is too large or too small to fit within the requested type." },
-    { INDEX_OUT_OF_BOUNDS, "Attempted to access an element of a JSON array that is beyond its length." },
-    { NO_SUCH_FIELD, "The JSON field referenced does not exist in this object." },
-    { IO_ERROR, "Error reading the file." },
-    { INVALID_JSON_POINTER, "Invalid JSON pointer syntax." },
-    { INVALID_URI_FRAGMENT, "Invalid URI fragment syntax." },
-    { UNEXPECTED_ERROR, "Unexpected error, consider reporting this problem as you may have found a bug in simdjson" },
-    { PARSER_IN_USE, "Cannot parse a new document while a document is still in use." },
-    { OUT_OF_ORDER_ITERATION, "Objects and arrays can only be iterated when they are first encountered." },
-    { INSUFFICIENT_PADDING, "simdjson requires the input JSON string to have at least SIMDJSON_PADDING extra bytes allocated, beyond the string's length. Consider using the simdjson::padded_string class if needed." },
-    { INCOMPLETE_ARRAY_OR_OBJECT, "JSON document ended early in the middle of an object or array." },
-    { SCALAR_DOCUMENT_AS_VALUE, "A JSON document made of a scalar (number, Boolean, null or string) is treated as a value. Use get_bool(), get_double(), etc. on the document instead. "},
-    { OUT_OF_BOUNDS, "Attempted to access location outside of document."},
-    { TRAILING_CONTENT, "Unexpected trailing content in the JSON input."}
+    { SUCCESS, "SUCCESS: No error" },
+    { CAPACITY, "CAPACITY: This parser can't support a document that big" },
+    { MEMALLOC, "MEMALLOC: Error allocating memory, we're most likely out of memory" },
+    { TAPE_ERROR, "TAPE_ERROR: The JSON document has an improper structure: missing or superfluous commas, braces, missing keys, etc." },
+    { DEPTH_ERROR, "DEPTH_ERROR: The JSON document was too deep (too many nested objects and arrays)" },
+    { STRING_ERROR, "STRING_ERROR: Problem while parsing a string" },
+    { T_ATOM_ERROR, "T_ATOM_ERROR: Problem while parsing an atom starting with the letter 't'" },
+    { F_ATOM_ERROR, "F_ATOM_ERROR: Problem while parsing an atom starting with the letter 'f'" },
+    { N_ATOM_ERROR, "N_ATOM_ERROR: Problem while parsing an atom starting with the letter 'n'" },
+    { NUMBER_ERROR, "NUMBER_ERROR: Problem while parsing a number" },
+    { UTF8_ERROR, "UTF8_ERROR: The input is not valid UTF-8" },
+    { UNINITIALIZED, "UNINITIALIZED: Uninitialized" },
+    { EMPTY, "EMPTY: no JSON found" },
+    { UNESCAPED_CHARS, "UNESCAPED_CHARS: Within strings, some characters must be escaped, we found unescaped characters" },
+    { UNCLOSED_STRING, "UNCLOSED_STRING: A string is opened, but never closed." },
+    { UNSUPPORTED_ARCHITECTURE, "UNSUPPORTED_ARCHITECTURE: simdjson does not have an implementation supported by this CPU architecture. Please report this error to the core team as it should never happen." },
+    { INCORRECT_TYPE, "INCORRECT_TYPE: The JSON element does not have the requested type." },
+    { NUMBER_OUT_OF_RANGE, "NUMBER_OUT_OF_RANGE: The JSON number is too large or too small to fit within the requested type." },
+    { INDEX_OUT_OF_BOUNDS, "INDEX_OUT_OF_BOUNDS: Attempted to access an element of a JSON array that is beyond its length." },
+    { NO_SUCH_FIELD, "NO_SUCH_FIELD: The JSON field referenced does not exist in this object." },
+    { IO_ERROR, "IO_ERROR: Error reading the file." },
+    { INVALID_JSON_POINTER, "INVALID_JSON_POINTER: Invalid JSON pointer syntax." },
+    { INVALID_URI_FRAGMENT, "INVALID_URI_FRAGMENT: Invalid URI fragment syntax." },
+    { UNEXPECTED_ERROR, "UNEXPECTED_ERROR: Unexpected error, consider reporting this problem as you may have found a bug in simdjson" },
+    { PARSER_IN_USE, "PARSER_IN_USE: Cannot parse a new document while a document is still in use." },
+    { OUT_OF_ORDER_ITERATION, "OUT_OF_ORDER_ITERATION: Objects and arrays can only be iterated when they are first encountered." },
+    { INSUFFICIENT_PADDING, "INSUFFICIENT_PADDING: simdjson requires the input JSON string to have at least SIMDJSON_PADDING extra bytes allocated, beyond the string's length. Consider using the simdjson::padded_string class if needed." },
+    { INCOMPLETE_ARRAY_OR_OBJECT, "INCOMPLETE_ARRAY_OR_OBJECT: JSON document ended early in the middle of an object or array." },
+    { SCALAR_DOCUMENT_AS_VALUE, "SCALAR_DOCUMENT_AS_VALUE: A JSON document made of a scalar (number, Boolean, null or string) is treated as a value. Use get_bool(), get_double(), etc. on the document instead. "},
+    { OUT_OF_BOUNDS, "OUT_OF_BOUNDS: Attempt to access location outside of document."},
+    { TRAILING_CONTENT, "TRAILING_CONTENT: Unexpected trailing content in the JSON input."}
  }; // error_messages[]

 } // namespace internal
@@ -122,8 +122,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return ppc64::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool replacement_char) const noexcept {
+  return ppc64::stringparsing::parse_string(src, dst, replacement_char);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return ppc64::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -152,8 +152,12 @@ simdjson_warn_unused error_code dom_parser_implementation::stage2_next(dom::docu
  return stage2::tape_builder::parse_document<true>(*this, _doc);
 }

-simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst) const noexcept {
-  return westmere::stringparsing::parse_string(src, dst);
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_string(const uint8_t *src, uint8_t *dst, bool replacement_char) const noexcept {
+  return westmere::stringparsing::parse_string(src, dst, replacement_char);
+}
+
+simdjson_warn_unused uint8_t *dom_parser_implementation::parse_wobbly_string(const uint8_t *src, uint8_t *dst) const noexcept {
+  return westmere::stringparsing::parse_wobbly_string(src, dst);
 }

 simdjson_warn_unused error_code dom_parser_implementation::parse(const uint8_t *_buf, size_t _len, dom::document &_doc) noexcept {
@@ -59,28 +59,28 @@ private:

 template<typename T>
 bool cast_tester<T>::test_get(element element, T expected) {
-  T actual;
+  T actual{};
  ASSERT_SUCCESS(element.get(actual));
  return assert_equal(actual, expected);
 }

 template<typename T>
 bool cast_tester<T>::test_get(simdjson_result<element> element, T expected) {
-  T actual;
+  T actual{};
  ASSERT_SUCCESS(element.get(actual));
  return assert_equal(actual, expected);
 }

 template<typename T>
 bool cast_tester<T>::test_get_error(element element, error_code expected_error) {
-  T actual;
+  T actual{};
  ASSERT_EQUAL(element.get(actual), expected_error);
  return true;
 }

 template<typename T>
 bool cast_tester<T>::test_get_error(simdjson_result<element> element, error_code expected_error) {
-  T actual;
+  T actual{};
  ASSERT_EQUAL(element.get(actual), expected_error);
  return true;
 }
@@ -113,28 +113,28 @@ bool cast_tester<T>::test_get_t_error(simdjson_result<element> element, error_co

 template<typename T>
 bool cast_tester<T>::test_named_get(element element, T expected) {
-  T actual;
+  T actual{};
  ASSERT_SUCCESS(named_get(element).get(actual));
  return assert_equal(actual, expected);
 }

 template<typename T>
 bool cast_tester<T>::test_named_get(simdjson_result<element> element, T expected) {
-  T actual;
+  T actual{};
  ASSERT_SUCCESS(named_get(element).get(actual));
  return assert_equal(actual, expected);
 }

 template<typename T>
 bool cast_tester<T>::test_named_get_error(element element, error_code expected_error) {
-  T actual;
+  T actual{};
  ASSERT_EQUAL(named_get(element).get(actual), expected_error);
  return true;
 }

 template<typename T>
 bool cast_tester<T>::test_named_get_error(simdjson_result<element> element, error_code expected_error) {
-  T actual;
+  T actual{};
  ASSERT_EQUAL(named_get(element).get(actual), expected_error);
  return true;
 }
@@ -143,7 +143,7 @@ bool cast_tester<T>::test_named_get_error(simdjson_result<element> element, erro

 template<typename T>
 bool cast_tester<T>::test_implicit_cast(element element, T expected) {
-  T actual;
+  T actual{};
  try {
    actual = element;
  } catch(simdjson_error &e) {
@@ -155,7 +155,7 @@ bool cast_tester<T>::test_implicit_cast(element element, T expected) {

 template<typename T>
 bool cast_tester<T>::test_implicit_cast(simdjson_result<element> element, T expected) {
-  T actual;
+  T actual{};
  try {
    actual = element;
  } catch(simdjson_error &e) {
@@ -168,7 +168,7 @@ bool cast_tester<T>::test_implicit_cast(simdjson_result<element> element, T expe
 template<typename T>
 bool cast_tester<T>::test_implicit_cast_error(element element, error_code expected_error) {
  try {
-    simdjson_unused T actual;
+    simdjson_unused T actual{};
    actual = element;
    return false;
  } catch(simdjson_error &e) {
@@ -180,7 +180,7 @@ bool cast_tester<T>::test_implicit_cast_error(element element, error_code expect
 template<typename T>
 bool cast_tester<T>::test_implicit_cast_error(simdjson_result<element> element, error_code expected_error) {
  try {
-    simdjson_unused T actual;
+    simdjson_unused T actual{};
    actual = element;
    return false;
  } catch(simdjson_error &e) {
@@ -9,7 +9,6 @@
 #include <set>
 #include <sstream>
 #include <utility>
-#include <ciso646>
 #include <unistd.h>

 #include "simdjson.h"
@@ -67,6 +66,15 @@ namespace number_tests {
    return true;
  }

+  bool issue2017() {
+    TEST_START();
+    simdjson::dom::parser parser;
+    simdjson::padded_string docdata = R"({"score":0.8825149536132812})"_padded;
+    double score;
+    ASSERT_SUCCESS(parser.parse(docdata)["score"].get_double().get(score));
+    ASSERT_EQUAL(score, 0.8825149536132812);
+    TEST_SUCCEED();
+  }

  bool small_integers() {
    std::cout << __func__ << std::endl;
@@ -74,7 +82,7 @@ namespace number_tests {
    for (int m = 10; m < 20; m++) {
      for (int i = -1024; i < 1024; i++) {
        auto str = std::to_string(i);
-        int64_t actual;
+        int64_t actual{};
        ASSERT_SUCCESS(parser.parse(str).get(actual));
        if (actual != i) {
          std::cerr << "JSON '" << str << "' parsed to " << actual << " instead of " << i << std::endl;
@@ -378,7 +386,8 @@ namespace number_tests {
  }

  bool run() {
-    return truncated_borderline() &&
+    return issue2017() &&
+           truncated_borderline() &&
           specific_tests() &&
           ground_truth() &&
           small_integers() &&
@@ -551,7 +560,7 @@ namespace parse_api_tests {
    ASSERT_SUCCESS( parser.parse_many(empty_batches_ndjson, BATCH_SIZE*16).get(stream) );
    for (auto doc : stream) {
      count++;
-      uint64_t val;
+      uint64_t val{};
      ASSERT_SUCCESS( doc.get(val) );
      ASSERT_EQUAL( val, count );
    }
@@ -956,6 +965,22 @@ namespace dom_api_tests {
    return true;
  }

+  bool issue1979() {
+    TEST_START();
+    auto json = R"({
+  "@avito-core/toggles:6.1.18": {
+    "add_model_review_from": true
+  }
+ })"_padded;
+    simdjson::dom::parser parser;
+    simdjson::dom::element doc;
+    ASSERT_SUCCESS(parser.parse(json).get(doc));
+    simdjson::dom::object main_object;
+    ASSERT_SUCCESS(doc.get_object().get(main_object));
+    ASSERT_SUCCESS(main_object["@avito-core/toggles:6.1.18"].get_object().error())
+    TEST_SUCCEED();
+  }
+
  bool document_object_index() {
    std::cout << "Running " << __func__ << std::endl;
    string json(R"({ "a": 1, "b": 2, "c/d": 3})");
@@ -978,14 +1003,6 @@ namespace dom_api_tests {

    simdjson::error_code error;
    simdjson_unused element val;
-// This is disabled, see https://github.com/simdjson/simdjson/issues/1243
-//#ifndef _LIBCPP_VERSION // should work everywhere but with libc++, must include the <ciso646> header.
-//    std::tie(val,error) = object["d"];
-//    ASSERT_ERROR( error, NO_SUCH_FIELD );
-//    std::tie(std::ignore,error) = object["d"];
-//    ASSERT_ERROR( error, NO_SUCH_FIELD );
-//#endif
-    // tie(val, error) = object["d"]; fails with "no viable overloaded '='" on Apple clang version 11.0.0	    tie(val, error) = doc["d"];
    object["d"].tie(val, error);
    ASSERT_ERROR( error, NO_SUCH_FIELD );
    ASSERT_ERROR( object["d"].get(val), NO_SUCH_FIELD );
@@ -1023,7 +1040,7 @@ namespace dom_api_tests {
    std::cout << "Running " << __func__ << std::endl;
    // Prints the number of results in twitter.json
    dom::parser parser;
-    uint64_t result_count;
+    uint64_t result_count{};
    ASSERT_SUCCESS( parser.load(TWITTER_JSON)["search_metadata"]["count"].get(result_count) );
    ASSERT_EQUAL( result_count, 100 );
    return true;
@@ -1039,7 +1056,7 @@ namespace dom_api_tests {
    for (auto tweet : tweets) {
      object user;
      ASSERT_SUCCESS( tweet["user"].get(user) );
-      bool default_profile;
+      bool default_profile{};
      ASSERT_SUCCESS( user["default_profile"].get(default_profile) );
      if (default_profile) {
        std::string_view screen_name;
@@ -1254,6 +1271,7 @@ namespace dom_api_tests {
    #if SIMDJSON_ENABLE_DEPRECATED_API
        ParsedJson_Iterator_test() &&
    #endif
+           issue1979() &&
           object_iterator() &&
           array_iterator() &&
           object_iterator_empty() &&
@@ -634,7 +634,7 @@ namespace document_stream_tests {
    ASSERT_SUCCESS( odparser.parse_many(json.data(), json.length(), 50).get(odstream) );
    for (auto doc: odstream) {
      if(counter < 6) {
-        int64_t val;
+        int64_t val{};
        ASSERT_SUCCESS(doc.at_pointer("/4").get(val));
        ASSERT_EQUAL(val, 5);
      } else {
@@ -797,7 +797,7 @@ namespace document_stream_tests {
      simdjson::dom::document_stream stream;
      ASSERT_SUCCESS( parser.parse_many(str, batch_size).get(stream) );
      for (auto doc : stream) {
-        int64_t keyid;
+        int64_t keyid{};
        ASSERT_SUCCESS( doc["id"].get(keyid) );
        ASSERT_EQUAL( keyid, int64_t(count) );

@@ -837,7 +837,7 @@ namespace document_stream_tests {
      simdjson::dom::document_stream stream;
      ASSERT_SUCCESS( parser.parse_many(str, batch_size).get(stream) );
      for (auto doc : stream) {
-        int64_t keyid;
+        int64_t keyid{};
        ASSERT_SUCCESS( doc["id"].get(keyid) );
        ASSERT_EQUAL( keyid, int64_t(count) );

@@ -46,7 +46,7 @@ namespace parser_load {
    ASSERT_SUCCESS(parser.parse_many(DOC).get(docs));
    for (auto doc : docs) {
      count++;
-      uint64_t val;
+      uint64_t val{};
      auto error = doc.get(val);
      if (count == 3) {
        ASSERT_ERROR(error, TAPE_ERROR);
@@ -83,7 +83,7 @@ namespace parser_load {
    ASSERT_SUCCESS(parser.parse_many(DOC).get(docs));
    for (auto doc : docs) {
      count++;
-      uint64_t val;
+      uint64_t val{};
      auto error = doc.get(val);
      if (count == 3) {
        ASSERT_ERROR(error, TAPE_ERROR);
@@ -33,12 +33,12 @@ static bool parse_and_validate(const std::string src, T expected) {
  simdjson::dom::parser parser;

  if constexpr (std::is_same<int64_t, T>::value) {
-    int64_t actual;
+    int64_t actual{};
    ASSERT_SUCCESS( parser.parse(pstr)["key"].get(actual) );
    std::cout << std::boolalpha << "test: " << (expected == actual) << std::endl;
    ASSERT_EQUAL( expected, actual );
  } else {
-    uint64_t actual;
+    uint64_t actual{};
    ASSERT_SUCCESS( parser.parse(pstr)["key"].get(actual) );
    std::cout << std::boolalpha << "test: " << (expected == actual) << std::endl;
    ASSERT_EQUAL( expected, actual );
@@ -140,7 +140,7 @@ bool tester(int seed, size_t volume) {
  std::vector<char> buffer(1024); // large buffer (can't overflow)
  simdjson::dom::parser parser;
  RandomEngine rand(seed);
-  double result;
+  double result{};
  for (size_t i = 0; i < volume; i++) {
    if((i%100000) == 0) { std::cout << "."; std::cout.flush(); }
    size_t length = build_random_string(rand, buffer.data());
@@ -41,7 +41,7 @@ void basics_error_2() {
      cout << "Make/Model: " << make << "/" << model << endl;

      // Casting a JSON element to an integer
-      uint64_t year;
+      uint64_t year{};
      if ((error = car["year"].get(year))) { cerr << error << endl; exit(1); }
      cout << "- This car is " << 2020 - year << "years old." << endl;

@@ -81,13 +81,13 @@ void basics_error_3() {
          dom::object innerobj;
          if ((error = key_value.value.get(innerobj))) { cerr << error << endl; exit(1); }

-          double va, vb;
+          double va{}, vb{};
          if ((error = innerobj["a"].get(va))) { cerr << error << endl; exit(1); }
          cout << "a: " << va << ", ";
          if ((error = innerobj["b"].get(vb))) { cerr << error << endl; exit(1); }
          cout << "b: " << vb << ", ";

-          int64_t vc;
+          int64_t vc{};
          if ((error = innerobj["c"].get(vc))) { cerr << error << endl; exit(1); }
          cout << "c: " << vc << endl;
      }
@@ -132,7 +132,7 @@ void basics_error_2_cpp17() {
    cout << "Make/Model: " << make << "/" << model << endl;

    // Casting a JSON element to an integer
-    uint64_t year;
+    uint64_t year{};
    if ((error = car["year"].get(year))) { cerr << error << endl; exit(1); }
    cout << "- This car is " << 2020 - year << "years old." << endl;

--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Daniel Lemire	92174c927d	New release	2023-06-15 09:21:07 -04:00
Ng Yong Xiang	b399c0165e	Add comma separated value parsing as an option in iterate_many (#2016 ) * Add comma separated value parsing * Fix failing tests * Make tests work for exceptions * Fix test * Fix try catch making test fail --------- Co-authored-by: Yong Xiang Ng <yxng@drwholdings.com>	2023-06-15 09:11:14 -04:00
Daniel Lemire	445ae024ba	fix: bug identified by Yagiz Nizipli (#2019 )	2023-06-15 09:10:13 -04:00
Daniel Lemire	65f9822542	Adding tests for issue 2017 (#2018 )	2023-06-07 09:57:28 -04:00
Daniel Lemire	74bb7b2533	Adding popcnt	2023-06-05 09:04:36 -04:00
Daniel Lemire	fd97288561	Adding popcnt.	2023-06-02 20:33:15 -04:00
Daniel Lemire	1da0d8ac65	Making sure popcnt is included	2023-06-02 20:32:54 -04:00
Daniel Lemire	85661a2901	Some systems release without NDEBUG set, let us not assert in these cases. (#2014 )	2023-06-01 16:18:36 -04:00
Daniel Lemire	3fcdb65d88	Update README.md	2023-05-26 09:26:17 -04:00
Daniel Lemire	8b00d91a2c	More documentation. (#2011 )	2023-05-26 09:23:21 -04:00
Daniel Lemire	7db3f97ba8	Adding CXX 20 to CI (#2005 ) * Adding CXX 20 to CI * side-stepping new CXX 20 guard. * Going another way * Saving. * Explicit. * Saving... --------- Co-authored-by: Daniel Lemire <dlemire@lemire.me>	2023-05-26 09:23:02 -04:00
Daniel Lemire	412a8f7c4d	Removing iso header. (#2009 ) * Removing iso header. * Fix. * Another one. * Caught another one. --------- Co-authored-by: Daniel Lemire <dlemire@lemire.me>	2023-05-23 16:19:21 -04:00
Daniel Lemire	d4b31c9feb	Update README.md	2023-05-23 16:16:26 -04:00
Daniel Lemire	ecdcf276b2	Update README.md	2023-05-23 16:15:13 -04:00
Daniel Lemire	6d92563280	Fixing issue 1943 (#2006 ) * Fixing issue 1943 * Tweaking.	2023-05-23 11:15:22 -04:00
Daniel Lemire	0998233d58	More documentation. (#2007 )	2023-05-23 11:15:07 -04:00
Daniel Lemire	cb735818ec	Document key queries. (#2008 )	2023-05-23 11:14:55 -04:00
Daniel Lemire	41ee548e3f	Adding godbolt examples. (#2010 ) * Adding godbolt examples. * Updating the examples.	2023-05-23 11:14:41 -04:00
Ng Yong Xiang	e9d5d5088a	Introduce logging levels for conditional logging and log key for NO_SUCH_FIELD error (#2004 ) * Add info and error logging * Add tests for error logging * Add logging for missing field * Update docs for logging usage * Fix style and pass by ref for string format args * Make log_level explicit and simplify get log level from env * Make log level int32_t * Format enum class * Fix ci * Move enum to header * Fix compilation for noexception build in test case * Disable warnings and putenv --------- Co-authored-by: Yong Xiang Ng <yxng@drwholdings.com>	2023-05-22 12:58:55 -04:00
Daniel Lemire	78151e80e5	Update README.md	2023-05-16 12:49:49 -04:00
Daniel Lemire	083a5d7351	Update README.md	2023-05-15 15:03:11 -04:00
Daniel Lemire	25fcc8b432	Version bump.	2023-05-14 17:18:01 -04:00
Daniel Lemire	a9c120f779	Directly check altivec macro. (#2002 )	2023-05-14 17:17:10 -04:00
Daniel Lemire	b1487e34c3	Adding more PPC64 testing. (#2001 )	2023-05-14 16:11:49 -04:00
Daniel Lemire	2a68a32012	Checking OS support for AVX-512 (#1998 ) * Adding support for AVX-512 on macOS. * Fix. * Fix. * Minor fix * Setting the variable to zero. * Fixing include * Checking if the OS supports AVX-512 * Tweaking. --------- Co-authored-by: Daniel Lemire <dlemire@lemire.me>	2023-05-12 19:25:02 -04:00
Daniel Lemire	21a2ccaeb8	Another fun one	2023-05-05 22:12:59 -04:00
Daniel Lemire	6cbb6ac89b	On ARM processors, rapidjson may struggle. Let us help it out. (#1996 )	2023-05-05 21:42:37 -04:00
Dirk Stolle	e9f0f1bb9b	Mention IceLake in documentation about implementation selection. (#1995 ) Since the creation of the IceLake implementation there are now four available implementations on Intel/AMD x64 processors.	2023-04-28 21:29:01 -04:00
Serge Aleynikov	7ef1ebd4fb	Add Erlang bindings (#1994 )	2023-04-28 09:54:49 -04:00
Daniel Lemire	8de540e267	Update README.md	2023-04-27 14:27:05 -04:00
Daniel Lemire	ebc51fbd1a	Update bug_report.md	2023-04-24 08:05:26 -04:00
Daniel Lemire	84a31c1615	Update bug_report.md	2023-04-23 12:06:47 -04:00
Daniel Lemire	f77ac963f4	Trying the undefined behaviour sanitizer (#1988 ) * Trying the undefined behaviour sanitizer * Trimming quiet	2023-04-23 11:50:05 -04:00
pjuhasz	ae3d912f8d	Add link to Perl binding (JSON::SIMD) (#1991 ) Co-authored-by: Peter Juhasz <juhasz.peter@uhusystems.com>	2023-04-23 10:37:56 -04:00
Daniel Lemire	abf3d7d440	Slightly safer linux counters	2023-04-21 13:26:49 -04:00
Daniel Lemire	3c313b8530	Removing old file.	2023-04-13 11:52:02 -04:00
Dirk Stolle	f435fddda1	update string_view lite to version 1.7.0 (#1984 ) This is the header as seen for the tag v1.7.0, commit 7b1867b7c08f9ac010fb8b9dae79ff8c8359bafb, on <https://github.com/martinmoene/string-view-lite>.	2023-04-11 13:58:38 -04:00
Daniel Lemire	14d927128b	New release	2023-04-08 16:13:48 -04:00
Daniel Lemire	48152a0326	Fix for issue 1981 (#1982 ) * Fix * Rewording. * Doing it differently.	2023-04-08 16:11:40 -04:00
Daniel Lemire	b5cf53232c	More documentation.	2023-04-06 10:52:18 -04:00
Daniel Lemire	b3d0b732e6	Update README.md	2023-04-04 14:22:12 -04:00
Daniel Lemire	3c29f40f2f	Trying to verify issue 1979 (#1980 )	2023-04-04 11:03:37 -04:00
Daniel Lemire	4a89d79984	Guarding the benchmarks.	2023-04-01 18:39:11 -04:00
Daniel Lemire	9cb639dcd7	Update basics.md	2023-03-30 12:35:38 -04:00
Daniel Lemire	4699dd0ce2	Update basics.md	2023-03-30 10:49:19 -04:00
Daniel Lemire	cfd337bb50	This PR adds an 'at_end()' method. (#1978 ) * This PR adds an 'at_end()' method. * Adding 1111 } * Tweaking test.	2023-03-30 10:47:13 -04:00
Daniel Lemire	9bef628982	It is no longer necessary to check separately for trailing content.	2023-03-24 20:04:04 -04:00
Daniel Lemire	59025bc8b1	Avoiding the issue where doc.get_value().get_object() differs from doc.get_object() in how errors are reported. (#1975 ) * Avoiding the issue where doc.get_value().get_object() differs from doc.get_object() in how errors are reported. * Minor tweaks	2023-03-24 12:44:18 -04:00
Daniel Lemire	ffe96dde19	Update HACKING.md	2023-03-22 09:02:24 -04:00
Daniel Lemire	f9664cf184	Update HACKING.md	2023-03-22 08:56:12 -04:00
Daniel Lemire	830323f383	Update HACKING.md	2023-03-22 08:55:26 -04:00
Daniel Lemire	eb8e15d9c0	Update HACKING.md	2023-03-22 08:53:44 -04:00
Daniel Lemire	3571f3a8d0	Additional documentation.	2023-03-18 16:38:16 -04:00
Daniel Lemire	4b13020d65	Patch release	2023-03-13 21:44:34 -04:00
Daniel Lemire	75c6c950e5	Ok.	2023-03-13 21:26:32 -04:00
Daniel Lemire	5ad7698af1	...	2023-03-13 17:07:25 -04:00
Daniel Lemire	f6f359d3eb	Very silly.	2023-03-13 17:05:53 -04:00
Daniel Lemire	185e157e0c	Silencing the stupid compiler warnings.	2023-03-13 16:06:10 -04:00
Daniel Lemire	3f3f6cde7c	Bad compiler	2023-03-13 13:33:20 -04:00
Daniel Lemire	005054916d	Bad compiler	2023-03-13 13:02:01 -04:00
Daniel Lemire	338224849d	Disabling memory sanitizer with one function. Might help with issue 1965 (#1966 ) * Might help with issue 1965 * Fix macro * Adding test. * Stupid compiler * Silly compiler * Stupid compilers * Unnecessary fixes * Update developer-options.cmake	2023-03-13 12:34:47 -04:00
Ashot Vardanian	ada52641b4	Fix: Defining maximal DOM capacity (#1970 )	2023-03-13 12:33:37 -04:00
Daniel Lemire	ede9d57f22	Adding tests with _GLIBCXX_ASSERTIONS (#1969 ) * Allowing users to specify -D_GLIBCXX_ASSERTIONS * Adding CI tests for GLIBCXX_ASSERTIONS * Adding curly brackets.	2023-03-13 12:32:43 -04:00
Daniel Lemire	7bf33f6c8a	Bad compiler	2023-03-13 12:29:01 -04:00
Daniel Lemire	d62b789cb3	More curly.	2023-03-13 10:49:15 -04:00
Daniel Lemire	33dbd44098	Better way to put -Og in debug mode (#1967 ) * Better way to put -Og in debug mode * Silly compiler * Stupid compiler. * Stupid compiler. * Silly compiler	2023-03-13 10:11:33 -04:00
Daniel Lemire	e0dcf8adc9	Silly compiler	2023-03-12 20:57:45 -04:00
Daniel Lemire	34dcd33a88	Patch.	2023-03-09 11:24:06 -05:00
Daniel Lemire	17a1a8e187	Adding -Og to debug builds. (#1964 ) * Adding -Og to debug builds. * Stupid compiler. * bad, bad, bad compiler	2023-03-09 11:14:42 -05:00
Daniel Lemire	77ad00b63c	Producing a minor patch release	2023-03-09 11:13:01 -05:00
Daniel Lemire	25e7f1765a	Various tweaks.	2023-03-09 10:42:23 -05:00
Daniel Lemire	8d01255ceb	Update basics.md	2023-03-09 08:27:32 -05:00
Daniel Lemire	8ec016b093	Update README.md	2023-03-08 15:30:52 -05:00
Daniel Lemire	9e726b9856	Removing obsolete badge	2023-03-08 14:50:37 -05:00
Daniel Lemire	312f1f26d3	Now obsolete.	2023-03-08 14:50:06 -05:00
Daniel Lemire	ba50571d66	Merge branch 'master' of github.com:simdjson/simdjson	2023-03-06 16:05:10 -05:00
Daniel Lemire	4a587cb898	Adding guards.	2023-03-06 16:04:42 -05:00
Daniel Lemire	bdf9123c92	Update README.md	2023-03-06 11:08:56 -05:00
Dominik Lohmann	6e4c29b7c5	Fix export component for simdjsonTargets.cmake (#1962 ) This fixes a bug that caused simdjsonTargets.cmake not to be included in CPack-generated packages, which—unlike `cmake --install`—does not pick up this mislabeled install component. I git-grepped through the code base, after this change all components are either `simdjson_Development` or `simdjson_Runtime`.	2023-03-04 17:34:40 -05:00
Daniel Lemire	ec0b48b772	Version bump.	2023-03-02 14:27:49 -05:00
Daniel Lemire	d65acbd47b	Tuning documentation.	2023-03-02 09:39:35 -05:00
Daniel Lemire	75240ad8e1	Update basics.md	2023-03-01 19:05:45 -05:00
Daniel Lemire	3efb44dc0f	Adding link	2023-03-01 19:03:03 -05:00
Daniel Lemire	5c5cd5b42d	[skip ci] rephrasing.	2023-03-01 10:08:00 -05:00
Daniel Lemire	12a1b6db53	This adds some examples to the documentation. (#1959 ) * This adds some examples to the documentation. * Fix	2023-02-28 22:59:42 -05:00
Daniel Lemire	37e87f6f99	Adding support for wobbly strings to On Demand and lossy trancoding from escaped (with replacement) (#1947 ) * Adding support for wobbly strings. * Minor tweak. * Adopt substitution code point. * Lossy * Patching	2023-02-28 22:56:44 -05:00
wanweiqiangintel	cd13b02bf0	add UTF-8 validation flag (#1957 )	2023-02-28 09:47:08 -05:00
Daniel Lemire	624174d916	Minor doc. tweaks.	2023-02-22 21:14:15 -05:00
Daniel Lemire	8a247f1321	Patch release.	2023-02-22 20:39:31 -05:00
Daniel Lemire	7aa35bffd3	Fixing support for windows ARM64 (#1955 ) * Fixing Windows ARM64 support * Updating the singleheader files.	2023-02-22 20:34:51 -05:00
Rawley	d6c910686b	Update README.md (#1953 )	2023-02-13 21:11:05 -05:00
Daniel Lemire	22cc523fd4	Patching release script.	2023-02-06 19:11:52 -05:00
Daniel Lemire	3177cd1b5d	Fix.	2023-02-06 19:08:11 -05:00
Daniel Lemire	63d9ce3c58	Patch release.	2023-02-06 18:31:02 -05:00
Daniel Lemire	8e8180560d	Fix for issue 1950 (#1951 )	2023-02-06 18:28:54 -05:00
Daniel Lemire	1594af5d5d	Tweak.	2023-02-06 08:51:11 -05:00
Dirk Stolle	b207338365	Remove trailing whitespace in README.md (#1949 ) This should make the whitespace test pass again.	2023-01-31 17:53:35 -05:00
Daniel Lemire	68be9c2170	Update README.md	2023-01-30 16:17:42 -05:00
Daniel Lemire	5347771091	Update documentation.yml	2023-01-30 15:14:27 -05:00
Daniel Lemire	8bf8315651	Update README.md	2023-01-30 14:50:06 -05:00
Daniel Lemire	269ae7ad6b	[skip ci] stupid mistake	2023-01-30 14:37:40 -05:00
Daniel Lemire	2aa91f741f	[skip ci] new doc runner	2023-01-30 14:29:48 -05:00
Daniel Lemire	5430544bbb	[skip ci] improving documentation. (#1948 )	2023-01-30 14:27:35 -05:00
Daniel Lemire	7b55f16682	Trying s390x in CI (#1945 ) * Trying s390x * Providing big endian testing. * adding token. * Fixing branch	2023-01-27 11:34:00 -05:00
Daniel Lemire	d8fec59e85	Safer add-dependency script. (#1946 )	2023-01-26 22:40:26 -05:00
Daniel Lemire	57b6034a0c	Let verbose	2023-01-26 21:12:23 -05:00