chore: add RelWithDebInfo to our CI tests (#2209)

* chore: add RelWithDebInfo to our tests

* fix

* chore: add various build types to ubuntu ci

.github/ISSUE_TEMPLATE/bug_report.md

@@ -45,12 +45,16 @@ It is fine to report bugs against our main branch, but if that is what you are d
 
 **Configuration (please complete the following information if relevant)**
  - OS: [e.g. Ubuntu 16.04.6 LTS]
- - Compiler [e.g. Apple clang version 11.0.3 (clang-1103.0.32.59) x86_64-apple-darwin19.4.0]
+ - Compiler* [e.g. Apple clang version 11.0.3 (clang-1103.0.32.59) x86_64-apple-darwin19.4.0]
  - Version [e.g. 22]
  - Optimization setting (e.g., -O3)
 
 We support up-to-date 64-bit ARM and x64 FreeBSD, macOS, Windows and Linux systems. Please ensure that your configuration is supported before labelling the issue as a bug.
 
+* We do not support unreleased or experimental compilers. If you encounter an issue with a
+pre-release version of a compiler, do not report it as a bug to simdjson. However, we always
+invite contributions either in the form an analysis or of a code contribution.
+
 **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 guide:

.github/workflows/alpine.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/fuzzers.yml

@@ -34,18 +34,18 @@ jobs:
         sudo apt update
         sudo apt-get install --quiet ninja-build valgrind zip unzip lsb-release wget software-properties-common gnupg
         wget https://apt.llvm.org/llvm.sh
-        sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
+        sudo apt-get purge --auto-remove llvm python3-lldb-15 llvm-15
         chmod +x llvm.sh
         sudo ./llvm.sh $CLANGVERSION
 
     - uses: actions/checkout@v4
 
-    - uses: actions/cache@v3
+    - uses: actions/cache@v4
       with:
         path: dependencies/.cache
         key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
 
-    - uses: actions/cache@v3
+    - uses: actions/cache@v4
       id: cache-corpus
       with:
         path: out/

.github/workflows/loongarch64.yml

@@ -0,0 +1,50 @@
+name: LoongArch64-CI
+
+on: [push, pull_request]
+
+jobs:
+  loongarch64:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - { toolchain-version: 2023.08.08 }
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install build requirements
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y --no-install-recommends cmake
+
+      - uses: actions/cache/restore@v4
+        id: restore-cache
+        with:
+          path: /opt/cross-tools
+          key: loongarch64-${{ matrix.platform.toolchain-version }}
+
+      - name: Download LoongArch64 gcc+glibc toolchain
+        if: ${{ !steps.restore-cache.outputs.cache-hit }}
+        run: |
+          url="https://github.com/loongson/build-tools/releases/download/${{ matrix.platform.toolchain-version }}/x86_64-cross-tools-loongarch64-gcc-libc.tar.xz"
+
+          wget "$url" -O /tmp/toolchain.tar.xz
+
+          mkdir -p /opt
+          tar -C /opt -x -f /tmp/toolchain.tar.xz
+
+      - uses: actions/cache/save@v3
+        if: ${{ !steps.restore-cache.outputs.cache-hit }}
+        with:
+          path: /opt/cross-tools
+          key: loongarch64-${{ matrix.platform.toolchain-version }}
+
+      - name: setup Loongarch64 build environment
+        run: |
+          echo "/opt/cross-tools/bin" >> $GITHUB_PATH
+          echo "CC=loongarch64-unknown-linux-gnu-gcc" >> $GITHUB_ENV
+          echo "CXX=loongarch64-unknown-linux-gnu-g++" >> $GITHUB_ENV
+      - name: configure
+        run: cmake -B build -DCMAKE_SYSTEM_PROCESSOR=loongarch64 -DARCH=lonngarch64 -DCMAKE_SYSTEM_NAME=Linux -DCMAKE_C_COMPILER=loongarch64-unknown-linux-gnu-gcc -DCMAKE_CXX_COMPILER=loongarch64-unknown-linux-gnu-g++
+      - name: build
+        run: cmake --build build

.github/workflows/macos.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/msys2-clang.yml

@@ -20,12 +20,15 @@ jobs:
           - msystem: "MINGW64"
             install: mingw-w64-x86_64-libxml2 mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja mingw-w64-x86_64-clang
             type: Debug
+            - msystem: "MINGW64"
+            install: mingw-w64-x86_64-libxml2 mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja mingw-w64-x86_64-clang
+            type: RelWithDebInfo
     env:
       CMAKE_GENERATOR: Ninja
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/msys2.yml

@@ -22,12 +22,15 @@ jobs:
           - msystem: "MINGW64"
             install: mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja mingw-w64-x86_64-gcc
             type: Debug
+            - msystem: "MINGW64"
+            install: mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja mingw-w64-x86_64-gcc
+            type: RelWithDebInfo
     env:
       CMAKE_GENERATOR: Ninja
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/power-fuzz.yml

@@ -1,71 +0,0 @@
-name: short fuzz on the power arch
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  armv7_job:
-    if: >-
-      ! contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
-      ! contains(toJSON(github.event.commits.*.message), '[skip github]')
-    # The host should always be Linux
-    runs-on: ubuntu-20.04
-    name: Build on ubuntu-20.04 ppc64le
-    steps:
-      - uses: actions/checkout@v4
-      - uses: uraimo/run-on-arch-action@v2.0.5
-        name: Run commands
-        id: runcmd
-        env:
-          DEBIAN_FRONTEND: noninteractive
-        with:
-          arch: ppc64le
-          distro: buster
-
-          # Not required, but speeds up builds by storing container images in
-          # a GitHub package registry.
-          githubToken: ${{ github.token }}
-
-          run: |
-            export CLANGSUFFIX="-7"
-            apt-get -qq update
-            apt-get install -q -y clang-7 libfuzzer-7-dev git wget zip ninja-build gnupg software-properties-common
-            wget -q -O - "https://raw.githubusercontent.com/simdjson/debian-ppa/master/key.gpg" | apt-key add -
-            apt-add-repository "deb https://raw.githubusercontent.com/simdjson/debian-ppa/master simdjson main"
-            apt-get -qq update
-            apt-get purge cmake cmake-data
-            apt-get -t simdjson -y install cmake
-            mkdir -p build ; cd build
-            cmake .. -GNinja \
-                  -DCMAKE_CXX_COMPILER=clang++$CLANGSUFFIX \
-                  -DCMAKE_C_COMPILER=clang$CLANGSUFFIX \
-                  -DBUILD_SHARED_LIBS=OFF \
-                  -DSIMDJSON_DEVELOPER_MODE=ON \
-                  -DSIMDJSON_ENABLE_FUZZING=On \
-                  -DSIMDJSON_COMPETITION=OFF \
-                  -DSIMDJSON_GOOGLE_BENCHMARKS=OFF \
-                  -DSIMDJSON_DISABLE_DEPRECATED_API=On \
-                  -DSIMDJSON_FUZZ_LDFLAGS=-lFuzzer \
-                  -DCMAKE_CXX_FLAGS="-fsanitize=fuzzer-no-link -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION=" \
-                  -DCMAKE_C_FLAGS="-fsanitize=fuzzer-no-link" \
-                  -DCMAKE_BUILD_TYPE=Release \
-                  -DSIMDJSON_FUZZ_LINKMAIN=Off
-            cd ..
-            builddir=build
-            cmake --build $builddir
-            wget -O corpus.tar.gz https://readonly:readonly@www.pauldreik.se/fuzzdata/index.php?project=simdjson
-            tar xf corpus.tar.gz
-            fuzzernames=$(cmake --build $builddir --target print_all_fuzzernames |tail -n1)
-            for fuzzer in $fuzzernames ; do
-               exe=$builddir/fuzz/$fuzzer
-               shortname=$(echo $fuzzer |cut -f2- -d_)
-               echo found fuzzer $shortname with executable $exe
-               mkdir -p out/$shortname
-               others=$(find out -type d -not -name $shortname -not -name out -not -name cmin)
-               $exe -max_total_time=20  -max_len=4000 out/$shortname $others
-               echo "*************************************************************************"
-            done
-            echo "all is good, no errors found in any of these fuzzers: $fuzzernames"

.github/workflows/ubuntu20-checkperf.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu20-gcc8.yml

@@ -13,7 +13,7 @@ jobs:
       CC: gcc-8
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu20-noexcept.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu20-nothread.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu20-sani.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu20.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-clang13.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-clang14.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-cxx20.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-gcc12.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-gcc13.yml

@@ -1,23 +0,0 @@
-name: Ubuntu 22.04 CI (GCC 13)
-
-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@v4
-      - uses: actions/cache@v3
-        with:
-          path: dependencies/.cache
-          key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
-      - name: Use cmake
-        run: |
-          mkdir build &&
-          cd build &&
-          CXX=g++-13 cmake -DSIMDJSON_DEVELOPER_MODE=ON ..  &&
-          cmake --build .   &&
-          ctest --output-on-failure -LE explicitonly -j

.github/workflows/ubuntu22-glibcxxassertions.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu22-threadsani.yml

@@ -1,4 +1,4 @@
-name: Ubuntu 22.04 CI (GCC 11) with Thread Sanitizer
+name: Ubuntu 22.04 CI (GCC 12) with Thread Sanitizer
 
 on: [push, pull_request]
 
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}
@@ -18,7 +18,7 @@ jobs:
         run: |
           mkdir build &&
           cd build &&
-          cmake  -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_SANITIZE_THREADS=ON ..  &&
+          CXX=g++-12 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

.github/workflows/ubuntu22.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dependencies/.cache
           key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.github/workflows/ubuntu24.yml

@@ -0,0 +1,25 @@
+name: Ubuntu 24.04 CI
+
+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-24.04
+    strategy:
+      matrix:
+        shared: [ON, OFF]
+        cxx: [g++-13, clang++-16]
+        sanitizer: [ON, OFF]
+        build_type: [RelWithDebInfo, Debug, Release]
+    steps:
+      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
+      - name: Prepare
+        run: cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_SANITIZE=${{matrix.sanitizer}} -DBUILD_SHARED_LIBS=${{matrix.shared}}  -B build
+        env:
+          CXX: ${{matrix.cxx}}
+      - name: Build
+        run: cmake --build build -j=2
+      - name: Test
+        run: ctest --output-on-failure --test-dir build

.github/workflows/vs17-arm-ci.yml

@@ -12,10 +12,11 @@ jobs:
          include:
            - {arch: ARM}
            - {arch: ARM64}
+           - {arch: ARM64EC}
      steps:
        - name: checkout
          uses: actions/checkout@v4
        - name: Use cmake
          run: |
-           cmake -A ${{ matrix.arch }} -DCMAKE_CROSSCOMPILING=1 -DSIMDJSON_DEVELOPER_MODE=ON -D SIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_EXCEPTIONS=OFF -B build  &&
+           cmake -A ${{ matrix.arch }} -DCMAKE_SYSTEM_VERSION="10.0.22621.0" -DCMAKE_CROSSCOMPILING=1 -DSIMDJSON_DEVELOPER_MODE=ON -D SIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_EXCEPTIONS=OFF -B build  &&
            cmake --build build --verbose

.github/workflows/vs17-ci.yml

@@ -13,10 +13,12 @@ jobs:
       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}
+          - {gen: Visual Studio 17 2022, arch: Win32, shared: ON, build_type: Release}
+          - {gen: Visual Studio 17 2022, arch: Win32, shared: OFF, build_type: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: ON, build_type: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: OFF, build_type: Debug}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: OFF, build_type: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, shared: OFF, build_type: RelWithDebInfo}
     steps:
     - name: checkout
       uses: actions/checkout@v4
@@ -24,21 +26,15 @@ jobs:
       run: |
         cmake -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: cmake --build build --config ${{build_type}} --verbose
+    - name: Run 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
+        ctest -C ${{build_type}}  -LE explicitonly  --output-on-failure
     - name: Install
       run: |
-        cmake --install build --config Release
+        cmake --install build --config ${{build_type}}
     - name: Test Installation
       run: |
         cmake -G "${{matrix.gen}}" -A ${{matrix.arch}}  -B build_install_test tests/installation_tests/find
-        cmake --build build_install_test --config Release
+        cmake --build build_install_test --config ${{build_type}}

.github/workflows/vs17-clang-ci.yml

@@ -13,29 +13,25 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - {gen: Visual Studio 17 2022, arch: x64}
+          - {gen: Visual Studio 17 2022, arch: x64, build_type: Debug}
+          - {gen: Visual Studio 17 2022, arch: x64, build_type: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, build_type: RelWithDebInfo}
     steps:
     - name: checkout
       uses: actions/checkout@v4
     - name: Configure
       run: |
         cmake -G "${{matrix.gen}}" -A ${{matrix.arch}}  -T ClangCL -DSIMDJSON_DEVELOPER_MODE=ON -DSIMDJSON_COMPETITION=OFF -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
+    - name: Build
+      run: cmake --build build --config ${{matrix.build_type}} --verbose
+    - name: Run 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
+        ctest -C ${{matrix.build_type}}  -LE explicitonly  --output-on-failure
     - name: Install
       run: |
-        cmake --install build --config Release
+        cmake --install build --config ${{matrix.build_type}}
     - name: Test Installation
       run: |
         cmake -G "${{matrix.gen}}" -A ${{matrix.arch}}  -B build_install_test tests/installation_tests/find
-        cmake --build build_install_test --config Release
+        cmake --build build_install_test --config ${{matrix.build_type}}

.github/workflows/vs17-noexcept-ci.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: windows-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/cache@v3
+    - uses: actions/cache@v4
       with:
         path: dependencies/.cache
         key: ${{ hashFiles('dependencies/CMakeLists.txt') }}

.vscode/settings.json

@@ -98,6 +98,17 @@
         "queue": "cpp",
         "shared_mutex": "cpp",
         "ranges": "cpp",
-        "span": "cpp"
+        "span": "cpp",
+        "__verbose_abort": "cpp",
+        "charconv": "cpp",
+        "source_location": "cpp",
+        "strstream": "cpp",
+        "typeindex": "cpp",
+        "*.tcc": "cpp",
+        "memory_resource": "cpp",
+        "numbers": "cpp",
+        "semaphore": "cpp",
+        "stop_token": "cpp",
+        "cfenv": "cpp"
     }
 }

CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.14)
 project(
     simdjson
     # The version number is modified by tools/release.py
-    VERSION 3.6.4
+    VERSION 3.9.4
     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 "19.0.0" CACHE STRING "simdjson library version")
-set(SIMDJSON_LIB_SOVERSION "19" CACHE STRING "simdjson library soversion")
+set(SIMDJSON_LIB_VERSION "22.0.0" CACHE STRING "simdjson library version")
+set(SIMDJSON_LIB_SOVERSION "22" CACHE STRING "simdjson library soversion")
 
 option(SIMDJSON_BUILD_STATIC_LIB "Build simdjson_static library along with simdjson" OFF)
 
@@ -106,6 +106,24 @@ if(
   )
 endif()
 
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(loongarch64)$")
+    option(SIMDJSON_PREFER_LSX "Prefer LoongArch SX" ON)
+    include(CheckCXXCompilerFlag)
+    check_cxx_compiler_flag(-mlasx COMPILER_SUPPORTS_LASX)
+    check_cxx_compiler_flag(-mlsx COMPILER_SUPPORTS_LSX)
+    if(COMPILER_SUPPORTS_LASX AND NOT SIMDJSON_PREFER_LSX)
+        simdjson_add_props(
+            target_compile_options PRIVATE
+            -mlasx
+        )
+    elseif(COMPILER_SUPPORTS_LSX)
+        simdjson_add_props(
+            target_compile_options PRIVATE
+            -mlsx
+        )
+    endif()
+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

CONTRIBUTING.md

@@ -52,10 +52,11 @@ General Guidelines
 Contributors are encouraged to :
 
 - Document their changes. Though we do not enforce a rule regarding code comments, we prefer that non-trivial algorithms and techniques be somewhat documented in the code.
-- Follow as much as possible the existing code style. We do not enforce a specific code style, but we prefer consistency.
+- Follow as much as possible the existing code style. We do not enforce a specific code style, but we prefer consistency. We avoid contractions (isn't, aren't) in the comments.
 - Modify as few lines of code as possible when working on an issue. The more lines you modify, the harder it is for your fellow human beings to understand what is going on.
 - Tools may report "problems" with the code, but we never delegate programming to tools: if there is a problem with the code, we need to understand it. Thus we will not "fix" code merely to please a static analyzer.
 - Provide tests for any new feature. We will not merge a new feature without tests.
+- Run before/after benchmarks so that we can appreciate the effect of the changes on the performance.
 
 Pull Requests
 --------------

Doxyfile

@@ -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         = "3.6.4"
+PROJECT_NUMBER         = "3.9.4"
 
 # 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

HACKING.md

@@ -80,7 +80,7 @@ simdjson's source structure, from the top level, looks like this:
     * simdjson/internal/*.h: the `simdjson::internal` namespace. Private classes and functions used by the rest of simdjson.
   * simdjson/dom.h: the `simdjson::dom` namespace. Includes all public DOM classes.
     * simdjson/dom/*.h: Declarations/definitions for individual DOM classes.
-  * simdjson/arm64|fallback|haswell|icelake|ppc64|westmere.h: `simdjson::<implementation>` namesapce. Common implementation-specific tools like number and string parsing, as well as minification.
+  * simdjson/arm64|fallback|haswell|icelake|ppc64|westmere.h: `simdjson::<implementation>` namespace. Common implementation-specific tools like number and string parsing, as well as minification.
     * simdjson/arm64|fallback|haswell|icelake|ppc64|westmere/*.h: implementation-specific functions such as , etc.
     * simdjson/generic/*.h: the bulk of the actual code, written generically and compiled for each implementation, using functions defined in the implementation's .h files.
       * simdjson/generic/dependencies.h: dependencies on common, non-implementation-specific simdjson classes. This will be included before including amalgamated.h.
@@ -283,8 +283,6 @@ If your compiler does not default on C++11 support or better you may get failing
 
 Note that the name of directory (`build`) is arbitrary, you can name it as you want (e.g., `buildgcc`) and you can have as many different such directories as you would like (one per configuration).
 
-
-
 ## 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).
@@ -304,17 +302,15 @@ Though having Visual Studio installed is necessary, one can build simdjson using
 - `mkdir build`
 - `cd build`
 - `cmake ..`
-- `cmake --build . -config Release`
+- `cmake --build . --config Release`
 
 
 Furthermore, if you have installed LLVM clang on Windows, for example as a component of Visual Studio 2019, you can configure and build simdjson using LLVM clang on Windows using cmake:
 
-
 - `mkdir build`
 - `cd build`
 - `cmake -T ClangCL ..`
-- `cmake --build . -config Release`
-
+- `cmake --build . --config Release`
 
 ## Various References
 

README.md

@@ -59,6 +59,7 @@ Real-world usage
 - [vast](https://github.com/tenzir/vast)
 - [ada-url](https://github.com/ada-url/ada)
 - [fastgron](https://github.com/adamritter/fastgron)
+- [WasmEdge](https://wasmedge.org)
 
 If you are planning to use simdjson in a product, please work from one of our releases.
 
@@ -168,7 +169,8 @@ We distinguish between "bindings" (which just wrap the C++ code) and a port to a
 - [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.
-- [gemmaJSON](https://github.com/sainttttt/gemmaJSON): Nim json parser based on simdjson bindings.
+- [gemmaJSON](https://github.com/sainttttt/gemmaJSON): Nim JSON parser based on simdjson bindings.
+- [simdjson-java](https://github.com/simdjson/simdjson-java): Java port.
 
 About simdjson
 --------------
@@ -179,7 +181,7 @@ CPU's multiple execution cores.
 
 Our default front-end is called On Demand, and we wrote a paper about it:
 
-- John Keiser, Daniel Lemire, [On-Demand JSON: A Better Way to Parse Documents?](http://arxiv.org/abs/2312.17149), Software: Practice and Experience (to appear)
+- John Keiser, Daniel Lemire, [On-Demand JSON: A Better Way to Parse Documents?](http://arxiv.org/abs/2312.17149), Software: Practice and Experience 54 (6), 2024.
 
 Some people [enjoy reading the first (2019) simdjson paper](https://arxiv.org/abs/1902.08318): A description of the design
 and implementation of simdjson is in our research article:

SECURITY.md

@@ -0,0 +1,7 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+Please use the following contact information for reporting a vulnerability:
+
+- [Daniel Lemire](https://github.com/lemire) - daniel@lemire.me

benchmark/apple/apple_arm_events.h

@@ -993,7 +993,6 @@ struct AppleEvents {
     // check permission
     int force_ctrs = 0;
     if (kpc_force_all_ctrs_get(&force_ctrs)) {
-      printf("Permission denied, xnu/kpc requires root privileges.\n");
       return (worked = false);
     }
     int ret;
@@ -1100,8 +1099,8 @@ struct AppleEvents {
       return 1;
     }
     return performance_counters {
-        counters_0[counter_map[0]], counters_0[counter_map[3]],
-        counters_0[counter_map[2]], counters_0[counter_map[1]]};
+        counters_0[counter_map[0]], counters_0[counter_map[2]],
+        counters_0[counter_map[3]], counters_0[counter_map[1]]};
   }
 };
 

benchmark/bench_dom_api.cpp

@@ -473,28 +473,6 @@ static void twitter_count(State& state) {
 }
 BENCHMARK(twitter_count);
 
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-static void iterator_twitter_count(State& state) {
-  // Prints the number of results in twitter.json
-  padded_string json = padded_string::load(TWITTER_JSON);
-  ParsedJson pj = build_parsed_json(json);
-  for (simdjson_unused auto _ : state) {
-    ParsedJson::Iterator iter(pj);
-    // uint64_t result_count = doc["search_metadata"]["count"];
-    if (!iter.move_to_key("search_metadata")) { return; }
-    if (!iter.move_to_key("count")) { return; }
-    if (!iter.is_integer()) { return; }
-    int64_t result_count = iter.get_integer();
-
-    if (result_count != 100) { return; }
-  }
-}
-BENCHMARK(iterator_twitter_count);
-SIMDJSON_POP_DISABLE_WARNINGS
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
 static void twitter_default_profile(State& state) {
   // Count unique users with a default profile.
   dom::parser parser;
@@ -578,54 +556,6 @@ static void error_code_twitter_default_profile(State& state) noexcept {
 }
 BENCHMARK(error_code_twitter_default_profile);
 
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-
-static void iterator_twitter_default_profile(State& state) {
-  // Count unique users with a default profile.
-  padded_string json;
-  auto error = padded_string::load(TWITTER_JSON).get(json);
-  if (error) { std::cerr << error << std::endl; return; }
-  ParsedJson pj = build_parsed_json(json);
-  for (simdjson_unused auto _ : state) {
-    set<string_view> default_users;
-    ParsedJson::Iterator iter(pj);
-
-    // for (dom::object tweet : doc["statuses"]) {
-    if (!(iter.move_to_key("statuses") && iter.is_array())) { return; }
-    if (iter.down()) { // first status
-      do {
-
-        // dom::object user = tweet["user"];
-        if (!(iter.move_to_key("user") && iter.is_object())) { return; }
-
-        // if (user["default_profile"]) {
-        if (iter.move_to_key("default_profile")) {
-          if (iter.is_true()) {
-            if (!iter.up()) { return; } // back to user
-
-            // default_users.insert(user["screen_name"]);
-            if (!(iter.move_to_key("screen_name") && iter.is_string())) { return; }
-            default_users.emplace(iter.get_string(), iter.get_string_length());
-          }
-          if (!iter.up()) { return; } // back to user
-        }
-
-        if (!iter.up()) { return; } // back to status
-
-      } while (iter.next()); // next status
-    }
-
-    if (default_users.size() != 86) { return; }
-  }
-}
-
-SIMDJSON_POP_DISABLE_WARNINGS
-BENCHMARK(iterator_twitter_default_profile);
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
 static void error_code_twitter_image_sizes(State& state) noexcept {
   // Count unique image sizes
   dom::parser parser;
@@ -680,92 +610,4 @@ static void parse_surrogate_pairs(State& state) {
 }
 BENCHMARK(parse_surrogate_pairs);
 
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-static void iterator_twitter_image_sizes(State& state) {
-  // Count unique image sizes
-  padded_string json;
-  auto error = padded_string::load(TWITTER_JSON).get(json);
-  if (error) { std::cerr << error << std::endl; return; }
-  ParsedJson pj = build_parsed_json(json);
-  for (simdjson_unused auto _ : state) {
-    set<tuple<uint64_t, uint64_t>> image_sizes;
-    ParsedJson::Iterator iter(pj);
-
-    // for (dom::object tweet : doc["statuses"]) {
-    if (!(iter.move_to_key("statuses") && iter.is_array())) { return; }
-    if (iter.down()) { // first status
-      do {
-
-        // dom::object media;
-        // not_found = tweet["entities"]["media"].get(media);
-        // if (!not_found) {
-        if (iter.move_to_key("entities")) {
-          if (!iter.is_object()) { return; }
-          if (iter.move_to_key("media")) {
-            if (!iter.is_array()) { return; }
-
-            //   for (dom::object image : media) {
-            if (iter.down()) { // first media
-              do {
-
-                // for (auto [key, size] : dom::object(image["sizes"])) {
-                if (!(iter.move_to_key("sizes") && iter.is_object())) { return; }
-                if (iter.down()) { // first size
-                  do {
-                    iter.move_to_value();
-
-                    // image_sizes.insert({ size["w"], size["h"] });
-                    if (!(iter.move_to_key("w")) && !iter.is_integer()) { return; }
-                    uint64_t width = iter.get_integer();
-                    if (!iter.up()) { return; } // back to size
-                    if (!(iter.move_to_key("h")) && !iter.is_integer()) { return; }
-                    uint64_t height = iter.get_integer();
-                    if (!iter.up()) { return; } // back to size
-                    image_sizes.emplace(width, height);
-
-                  } while (iter.next()); // next size
-                  if (!iter.up()) { return; } // back to sizes
-                }
-                if (!iter.up()) { return; } // back to image
-              } while (iter.next()); // next image
-              if (!iter.up()) { return; } // back to media
-            }
-            if (!iter.up()) { return; } // back to entities
-          }
-          if (!iter.up()) { return; } // back to status
-        }
-      } while (iter.next()); // next status
-    }
-
-    if (image_sizes.size() != 15) { return; };
-  }
-}
-BENCHMARK(iterator_twitter_image_sizes);
-
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-static void print_json(State& state) noexcept {
-  // Prints the number of results in twitter.json
-  dom::parser parser;
-
-  padded_string json;
-  auto error = padded_string::load(TWITTER_JSON).get(json);
-  if (error) { std::cerr << error << std::endl; return; }
-
-  int code = json_parse(json, parser);
-  if (code) { cerr << error_message(code) << endl; return; }
-  for (simdjson_unused auto _ : state) {
-    std::stringstream s;
-    if (!parser.print_json(s)) { cerr << "print_json failed" << endl; return; }
-  }
-}
-BENCHMARK(print_json);
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-SIMDJSON_POP_DISABLE_WARNINGS
-
 BENCHMARK_MAIN();

benchmark/bench_parse_call.cpp

@@ -169,22 +169,6 @@ BENCHMARK(parse_gsoc)->Repetitions(10)->ComputeStatistics("max", [](const std::v
   })->DisplayAggregatesOnly(true);
 
 
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-static void json_parse(State& state) {
-  ParsedJson pj;
-  if (!pj.allocate_capacity(EMPTY_ARRAY.length())) { return; }
-  for (simdjson_unused auto _ : state) {
-    auto error = json_parse(EMPTY_ARRAY, pj);
-    if (error) { return; }
-  }
-}
-SIMDJSON_POP_DISABLE_WARNINGS
-BENCHMARK(json_parse);
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
 static void parser_parse_error_code(State& state) {
   dom::parser parser;
   if (parser.allocate(EMPTY_ARRAY.length())) { return; }
@@ -213,20 +197,6 @@ BENCHMARK(parser_parse_exception);
 
 #endif // SIMDJSON_EXCEPTIONS
 
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-static void build_parsed_json(State& state) {
-  for (simdjson_unused auto _ : state) {
-    dom::parser parser = simdjson::build_parsed_json(EMPTY_ARRAY);
-    if (!parser.valid) { return; }
-  }
-}
-SIMDJSON_POP_DISABLE_WARNINGS
-
-BENCHMARK(build_parsed_json);
-#endif
-
 static void document_parse_error_code(State& state) {
   for (simdjson_unused auto _ : state) {
     dom::parser parser;

benchmark/json_benchmark/file_runner.h

@@ -24,7 +24,7 @@ struct file_runner : public runner_base<I> {
 
   simdjson_warn_unused bool before_run(benchmark::State &state) {
     if (!runner_base<I>::after_run(state)) { return false; };
-    // Copy the original json in case we did *in situ* last time
+    // Copy the original JSON in case we did *in situ* last time
     std::memcpy(json.data(), original_json.data(), original_json.size());
     return true;
   }

benchmark/json_benchmark/string_runner.h

@@ -13,7 +13,7 @@ struct string_runner : public runner_base<I> {
 
   simdjson_warn_unused bool before_run(benchmark::State &state) {
     if (!runner_base<I>::after_run(state)) { return false; };
-    // Copy the original json in case we did *in situ*
+    // Copy the original JSON in case we did *in situ*
     std::memcpy(json.data(), original_json.data(), original_json.size());
     return true;
   }

dependencies/CMakeLists.txt

@@ -22,7 +22,7 @@ endif()
 # The bulk of our benchmarking and testing data has been moved simdjson/simdjson-data
 import_dependency(simdjson-data simdjson/simdjson-data a5b13babe65c1bba7186b41b43d4cbdc20a5c470)
 add_dependency(simdjson-data)
-
+option(SIMDJSON_USE_BOOST_JSON "Try to include BOOST_JSON, this may break your binaries under some systems." OFF)
 # This prevents variables declared with set() from unnecessarily escaping and
 # should not be called more than once
 function(competition_scope_)
@@ -36,8 +36,8 @@ function(competition_scope_)
 #endif
 
 int main() {}
-]] USE_BOOST_JSON)
-  if(USE_BOOST_JSON)
+]] SIMDJSON_FOUND_STRING_VIEW)
+  if(SIMDJSON_FOUND_STRING_VIEW AND SIMDJSON_USE_BOOST_JSON)
     import_dependency(boostjson boostorg/json ee8d72d)
     add_library(boostjson STATIC "${boostjson_SOURCE_DIR}/src/src.cpp")
     target_compile_definitions(boostjson PUBLIC BOOST_JSON_STANDALONE)
@@ -104,7 +104,11 @@ int main() {}
   target_compile_definitions(rapidjson INTERFACE RAPIDJSON_HAS_STDSTRING)
   target_include_directories(rapidjson SYSTEM INTERFACE
           "${rapidjson_SOURCE_DIR}/include")
-  target_compile_definitions(rapidjson INTERFACE SIMDJSON_COMPETITION_RAPIDJSON)
+  if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 14)
+    message(STATUS "Disabling rapidjson")
+  else()
+    target_compile_definitions(rapidjson INTERFACE SIMDJSON_COMPETITION_RAPIDJSON)
+  endif()
 
   import_dependency(sajson chadaustin/sajson 2dcfd35)
   add_library(sajson INTERFACE)
@@ -130,7 +134,7 @@ int main() {}
   add_library(competition-core INTERFACE)
   target_link_libraries(competition-core INTERFACE nlohmann_json rapidjson sajson cjson jsmn yyjson)
 
-  if(USE_BOOST_JSON)
+  if(TARGET boostjson)
      target_compile_definitions(boostjson INTERFACE HAS_BOOST_JSON)
      target_link_libraries(competition-core INTERFACE boostjson)
   endif()

doc/dom.md

@@ -71,6 +71,12 @@ For best performance, a `parser` instance should be reused over several files: o
 If you need a lower-level interface, you may call the function `parser.parse(const char * p, size_t l)` on a pointer `p` while specifying the
 length of your input `l` in bytes. To see how to get the very best performance from a low-level approach, you way want to read our [performance notes](https://github.com/simdjson/simdjson/blob/master/doc/performance.md#padding-and-temporary-copies) on this topic (see the Padding and Temporary Copies section).
 
+*Windows-specific*:  Windows users who need to read files with
+non-ANSI characters in the name should set their code page to
+UTF-8 (65001). This should be the default with Windows 11 and better.
+Further, they may use the AreFileApisANSI function to determine whether
+the filename is interpreted using the ANSI or the system default OEM
+codepage, and they may call SetFileApisToOEM accordingly.
 
 Using the Parsed JSON
 ---------------------
@@ -223,13 +229,13 @@ dom::element cars = parser.parse(cars_json);
 cout << cars.at_pointer("/0/tire_pressure/1") << endl; // Prints 39.9
 ```
 
-A JSON Path is a sequence of segments each starting with the '/' character. Within arrays, an integer
+A JSON Pointer expression is a sequence of segments each starting with the '/' character. Within arrays, an integer
 index allows you to select the indexed node. Within objects, the string value of the key allows you to
 select the value. If your keys contain the characters '/' or '~', they must be escaped as '~1' and
-'~0' respectively. An empty JSON Path refers to the whole document.
+'~0' respectively. An empty JSON Pointer expression refers to the whole document.
 
 We also extend the JSON Pointer support to include *relative* paths.
-You can apply a JSON path to any node and the path gets interpreted relatively, as if the current node were a whole JSON document.
+You can apply a JSON Pointer expression to any node and the path gets interpreted relatively, as if the current node were a whole JSON document.
 
 Consider the following example:
 

doc/implementation-selection.md

@@ -11,27 +11,31 @@ CPU Architecture-Specific Implementations
 Overview
 --------
 
+
+
 The simdjson library takes advantage of SIMD instruction sets such as NEON, SSE and AVX to achieve
 much of its speed. Because these instruction sets work differently, simdjson has to compile a
 different version of the JSON parser for different CPU architectures, often with different
 algorithms to take better advantage of a given CPU!
 
 The current implementations are:
-* icelake: AVX-512F, AVX-512VBMI, etc.
-* haswell: AVX2 (2013 Intel Haswell or later)
+* icelake: AVX-512F, AVX-512_VBMI, AVX-512_VBMI2, AVX-512_DQ, AVX-512512_CD, AVX-512_BW, AVX-512_VL (2019 Intel Ice Lake, Intel Rocket Lake, Intel Sapphire Rapids, AMD Zen 4)
+* haswell: AVX2 (2013 Intel Haswell or later, all AMD Zen processors)
 * 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. The library is tested on recent, little-endian, POWER systems.
+* ppc64: 64-bit POWER8 and POWER9 with VSX and ALTIVEC extensions. Both big endian and little endian are implemented, depending on the compiler you are using. The library is tested on recent, little-endian, POWER systems.
+* lasx: Loongson Advanced SIMD EXtension (LASX),  a 256-bit vector expansion for the LoongArch architecture.
+* lsx: Loongson SIMD EXtension (LSX),  a 128-bit vector expansion for the LoongArch architecture.
 * 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 4 implementations
-(icelake, haswell, westmere and fallback), on ARM it will include 2 (arm64 and fallback), and on PPC
+(icelake, haswell, westmere and fallback), on 64-bit ARM it will include just one since running dispatching is  unnecessary, 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,
-WESTMERE, ARM64, PPC64 and FALLBACK).
+WESTMERE, ARM64, PPC64, LSX, LASX and FALLBACK).
 
 The simdjson library automatically sets header flags for each implementation as it compiles; there
 is no need to set architecture-specific flags yourself (e.g., `-mavx2`, `/AVX2`  or
@@ -75,8 +79,7 @@ And look them up by name:
 ```c++
 cout << simdjson::get_available_implementations()["fallback"]->description() << endl;
 ```
-Though the fallback implementation should always be available, others might be missing. When
-an implementation is not available, the bracket call `simdjson::get_available_implementations()[name]`
+When an implementation is not available, the bracket call `simdjson::get_available_implementations()[name]`
 will return the null pointer.
 
 The available implementations have been compiled but may not necessarily be run safely on your system

doc/ondemand_design.md

@@ -686,7 +686,7 @@ in production systems:
     // if (std::string_view(c2["name"]) != "Daniel") { return false; }
 ```
 
-    A correct usage is given by the following example:
+A correct usage is given by the following example:
 
 ```C++
     ondemand::parser parser;
@@ -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: `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.
+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), `lasx` (LoongArch), `lsx` (LoongArch),  `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;
@@ -779,4 +779,4 @@ Instead of specifying a specific microarchitecture, you can let your compiler do
 
 Passing `-march=native` to the compiler may make On Demand faster by allowing it to use optimizations specific to your machine. You cannot do this, however, if you are compiling code	that might be run on less advanced machines. That is, be mindful that when compiling with the `-march=native` flag, the resulting binary will run on the current system but may not run on other systems (e.g., on an old processor).
 
-If you are compiling on an ARM or POWER system, you do not need to be concerned with CPU selection during compilation. The `-march=native` flag useful for best performance on x64 (e.g., Intel) systems but it is generally unsupported on some platforms such as ARM (aarch64) or POWER.
+If you are compiling on an ARM or POWER system, you do not need to be concerned with CPU selection during compilation. The `-march=native` flag is useful for best performance on x64 (e.g., Intel) systems but it is generally unsupported on some platforms such as ARM (aarch64) or POWER.

doc/performance.md

@@ -14,6 +14,7 @@ testing and get the best performance.
 * [Number parsing](#number-parsing)
 * [Visual Studio](#visual-studio)
 * [Power Usage and Downclocking](#power-usage-and-downclocking)
+* [Free Padding](#free-padding)
 
 
 NDEBUG directive
@@ -159,7 +160,7 @@ When compiling with Visual Studio, we recommend the flags `/Ob2 /O2` or better.
 
 Recent versions of Microsoft Visual Studio on Windows provides support for the LLVM Clang compiler. You  only need to install the "Clang compiler" optional component (ClangCL). You may also get a copy of the 64-bit LLVM CLang compiler for [Windows directly from LLVM](https://releases.llvm.org/download.html). The simdjson library fully supports the LLVM Clang compiler under Windows. In fact, you may get better performance out of simdjson with the LLVM Clang compiler than with the regular Visual Studio compiler. Meanwhile the [LLVM CLang compiler is binary compatible with Visual Studio](https://clang.llvm.org/docs/MSVCCompatibility.html) which means that you can combine their binaries (executables and libraries).
 
-Under Windows, we also support the GNU GCC compiler via MSYS2. The performance of 64-bit MSYS2 under Windows excellent (on par with Linux).
+Under Windows, we also support the GNU GCC compiler via MSYS2. The performance of 64-bit MSYS2 under Windows is excellent (on par with Linux).
 
 
 Power Usage and Downclocking
@@ -179,3 +180,110 @@ The simdjson library does not generally make use of heavy 256-bit instructions.
 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.
+
+
+Free Padding
+-------
+
+For performance reasons, the simdjson library requires that the JSON input contain at least
+`simdjson::SIMDJSON_PADDING` bytes at the end of the stream. The value `simdjson::SIMDJSON_PADDING` is
+small (e.g., 64 bytes). On modern systems, you can safely read beyond an allocated buffers,
+as long as you remain within an allocated page. Pages on modern systems span at least 4 kilobytes,
+but can be significantly larger. E.g., Apple systems favour pages spanning 16 kilobytes.
+
+In effect, it means that you can almost always read a few bytes beyond your current buffer---without
+allocating extra memory. However, tools such as valgrind or memory sanitizers will flag such behavior as unsafe.
+Nevertheless, you can still make sure of this capability in your code if you are an expert
+programmer and you are willing to silence sanitizer warnings. The following code provides
+a portable example.
+
+
+The conditional compilation checks for the `_MSC_VER` macro (indicating Microsoft Visual Studio)
+and includes platform-specific headers accordingly.
+The `page_size()` function determines the default size of a memory page in bytes on the system.
+On Windows (when `_WIN32` is defined), it uses `GetSystemInfo()` to retrieve system information and obtain the page size.
+On other platforms (non-Windows), it uses `sysconf(_SC_PAGESIZE)` to get the page size.
+The function returns the page size.
+The `need_allocation()` function checks whether the buffer (given by `buf`) plus the specified length (`len`) is near a page boundary.
+If the buffer extends beyond the current page when padded by `simdjson::SIMDJSON_PADDING`, it returns true, indicating that reallocation is needed.
+Otherwise, it returns false.
+The `get_padded_string_view()`  creates a `padded_string_view` from the input buffer.
+If reallocation is needed (unlikely case), it allocates a new padded_string and assigns it to `jsonbuffer`.
+Otherwise (very likely), it creates a `padded_string_view` directly from the buffer.
+The `simdjson::SIMDJSON_PADDING` ensures that there is additional padding for parsing efficiency.
+The calling code just needs to provide `jsonbuffer` (an instance of `simdjson::padded_string`)
+and pass `get_padded_string_view(buf, len, jsonbuffer)` to  `parser.iterate`. Most of the time,
+this code will not allocate new memory.
+
+
+```cpp
+#ifdef _WIN32
+#include <windows.h>
+#include <sysinfoapi.h>
+#else
+#include <unistd.h>
+#endif
+#include "simdjson.h"
+#include <cstdio>
+
+// Returns the default size of the page in bytes on this system.
+long page_size() {
+#ifdef _WIN32
+  SYSTEM_INFO sysInfo;
+  GetSystemInfo(&sysInfo);
+  long pagesize = sysInfo.dwPageSize;
+#else
+  long pagesize = sysconf(_SC_PAGESIZE);
+#endif
+  return pagesize;
+}
+
+// Returns true if the buffer + len + simdjson::SIMDJSON_PADDING crosses the
+// page boundary.
+bool need_allocation(const char *buf, size_t len) {
+  return ((reinterpret_cast<uintptr_t>(buf + len - 1) % page_size()) <
+          simdjson::SIMDJSON_PADDING);
+}
+
+simdjson::padded_string_view
+get_padded_string_view(const char *buf, size_t len,
+                       simdjson::padded_string &jsonbuffer) {
+  if (need_allocation(buf, len)) { // unlikely case
+    jsonbuffer = simdjson::padded_string(buf, len);
+    return jsonbuffer;
+  } else { // no reallcation needed (very likely)
+    return simdjson::padded_string_view(buf, len,
+                                            len + simdjson::SIMDJSON_PADDING);
+  }
+}
+
+int main() {
+  printf("page_size: %ld\n", page_size());
+  const char *jsonpoiner = R"(
+        {
+            "key": "value"
+        }
+    )";
+  size_t len = strlen(jsonpoiner);
+  simdjson::padded_string jsonbuffer; // only allocate if needed
+  simdjson::ondemand::parser parser;
+  simdjson::ondemand::document doc;
+  simdjson::error_code error =
+      parser.iterate(get_padded_string_view(jsonpoiner, len, jsonbuffer))
+          .get(doc);
+  if (error) {
+    printf("error: %s\n", simdjson::error_message(error));
+    return EXIT_FAILURE;
+  }
+  std::string_view value;
+  error = doc["key"].get_string().get(value);
+  if (error) {
+    return EXIT_FAILURE;
+  }
+  printf("Value: \"%.*s\"\n", (int)value.size(), value.data());
+  if (value != "value") {
+    return EXIT_FAILURE;
+  }
+  return EXIT_SUCCESS;
+}
+```

doc/tape.md

@@ -29,7 +29,7 @@ It is sometimes useful to start with an example. Consider the following JSON doc
 The following is a dump of the content of the tape, with the first number of each line representing the index of a tape element.
 
 ### The Tape
-| index | element (64 bit word)                                               |
+| index | element (64-bit word)                                               |
 | ----- | ------------------------------------------------------------------- |
 | 0     | r	// pointing to 39 (right after last node)                         |
 | 1     | {	// pointing to next tape location 38 (first node after the scope) |

fuzz/build_fuzzer_variants.sh

@@ -78,7 +78,7 @@ fi
 # Different levels may uncover different types of bugs, see this interesting
 # thread: https://github.com/google/oss-fuzz/issues/2295#issuecomment-481493392
 # Oss-fuzz uses -O1 so it may be relevant to use something else than that,
-# to do something oss-fuzz doesn't.
+# to do something oss-fuzz does not do.
 variant=sanitizers-O3
 
     if [ ! -d build-$variant ] ; then

fuzz/fuzz_atpointer.cpp

@@ -7,11 +7,11 @@
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
 
-  // Split data into two strings, json pointer and the document string.
+  // Split data into two strings, JSON Pointer and the document string.
   // Might end up with none, either or both being empty, important for
   // covering edge cases such as
   // https://github.com/simdjson/simdjson/issues/1142 Inputs missing the
-  // separator line will get an empty json pointer but the all the input put in
+  // separator line will get an empty JSON Pointer but the all the input put in
   // the document string. This means test data from other fuzzers that take json
   // input works for this fuzzer as well.
   FuzzData fd(Data, Size);

include/simdjson/arm64/numberparsing_defs.h

@@ -9,10 +9,10 @@
 
 #include <cstring>
 
-#if _M_ARM64
+#if SIMDJSON_REGULAR_VISUAL_STUDIO && SIMDJSON_IS_ARM64
 // __umulh requires intrin.h
 #include <intrin.h>
-#endif // _M_ARM64
+#endif // SIMDJSON_REGULAR_VISUAL_STUDIO && SIMDJSON_IS_ARM64
 
 namespace simdjson {
 namespace arm64 {
@@ -32,13 +32,13 @@ static simdjson_inline uint32_t parse_eight_digits_unrolled(const uint8_t *chars
 simdjson_inline internal::value128 full_multiplication(uint64_t value1, uint64_t value2) {
   internal::value128 answer;
 #if SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
-#ifdef _M_ARM64
+#if SIMDJSON_IS_ARM64
   // ARM64 has native support for 64-bit multiplications, no need to emultate
   answer.high = __umulh(value1, value2);
   answer.low = value1 * value2;
 #else
   answer.low = _umul128(value1, value2, &answer.high); // _umul128 not available on ARM64
-#endif // _M_ARM64
+#endif // SIMDJSON_IS_ARM64
 #else // SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
   __uint128_t r = (static_cast<__uint128_t>(value1)) * value2;
   answer.low = uint64_t(r);

include/simdjson/arm64/simd.h

@@ -134,7 +134,7 @@ namespace {
       tmp = vpaddq_u8(tmp, tmp);
       return vgetq_lane_u16(vreinterpretq_u16_u8(tmp), 0);
     }
-    simdjson_inline bool any() const { return vmaxvq_u8(*this) != 0; }
+    simdjson_inline bool any() const { return vmaxvq_u32(vreinterpretq_u32_u8(*this)) != 0; }
   };
 
   // Unsigned bytes

include/simdjson/builtin.h

@@ -20,6 +20,10 @@
 #include "simdjson/ppc64.h"
 #elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(westmere)
 #include "simdjson/westmere.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lsx)
+#include "simdjson/lsx.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lasx)
+#include "simdjson/lasx.h"
 #else
 #error Unknown SIMDJSON_BUILTIN_IMPLEMENTATION
 #endif

include/simdjson/builtin/base.h

@@ -17,6 +17,10 @@ namespace simdjson {
   namespace ppc64 {}
 #elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(westmere)
   namespace westmere {}
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lsx)
+  namespace lsx {}
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lasx)
+  namespace lasx {}
 #else
 #error Unknown SIMDJSON_BUILTIN_IMPLEMENTATION
 #endif

include/simdjson/builtin/implementation.h

@@ -19,6 +19,10 @@
 #include "simdjson/ppc64/implementation.h"
 #elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(westmere)
 #include "simdjson/westmere/implementation.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lsx)
+#include "simdjson/lsx/implementation.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lasx)
+#include "simdjson/lasx/implementation.h"
 #else
 #error Unknown SIMDJSON_BUILTIN_IMPLEMENTATION
 #endif

include/simdjson/builtin/ondemand.h

@@ -20,6 +20,10 @@
 #include "simdjson/ppc64/ondemand.h"
 #elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(westmere)
 #include "simdjson/westmere/ondemand.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lsx)
+#include "simdjson/lsx/ondemand.h"
+#elif SIMDJSON_BUILTIN_IMPLEMENTATION_IS(lasx)
+#include "simdjson/lasx/ondemand.h"
 #else
 #error Unknown SIMDJSON_BUILTIN_IMPLEMENTATION
 #endif

include/simdjson/dom.h

@@ -10,18 +10,12 @@
 #include "simdjson/dom/parser.h"
 #include "simdjson/dom/serialization.h"
 
-// Deprecated API
-#include "simdjson/dom/jsonparser.h"
-#include "simdjson/dom/parsedjson.h"
-#include "simdjson/dom/parsedjson_iterator.h"
-
 // Inline functions
 #include "simdjson/dom/array-inl.h"
 #include "simdjson/dom/document_stream-inl.h"
 #include "simdjson/dom/document-inl.h"
 #include "simdjson/dom/element-inl.h"
 #include "simdjson/dom/object-inl.h"
-#include "simdjson/dom/parsedjson_iterator-inl.h"
 #include "simdjson/dom/parser-inl.h"
 #include "simdjson/internal/tape_ref-inl.h"
 #include "simdjson/dom/serialization-inl.h"

include/simdjson/dom/array.h

@@ -19,11 +19,14 @@ public:
   public:
     using value_type = element;
     using difference_type = std::ptrdiff_t;
+    using pointer = void;
+    using reference = value_type;
+    using iterator_category = std::forward_iterator_tag;
 
     /**
      * Get the actual value
      */
-    inline value_type operator*() const noexcept;
+    inline reference operator*() const noexcept;
     /**
      * Get the next value.
      *

include/simdjson/dom/document_stream-inl.h

@@ -223,7 +223,11 @@ simdjson_inline std::string_view document_stream::iterator::source() const noexc
     return std::string_view(start, next_doc_index - current_index() + 1);
   } else {
     size_t next_doc_index = stream->batch_start + stream->parser->implementation->structural_indexes[stream->parser->implementation->next_structural_index];
-    return std::string_view(reinterpret_cast<const char*>(stream->buf) + current_index(), next_doc_index - current_index() - 1);
+    size_t svlen = next_doc_index - current_index();
+    while(svlen > 1 && (std::isspace(start[svlen-1]) || start[svlen-1] == '\0')) {
+      svlen--;
+    }
+    return std::string_view(start, svlen);
   }
 }
 

include/simdjson/dom/element-inl.h

@@ -375,6 +375,23 @@ inline simdjson_result<element> element::operator[](const char *key) const noexc
   return at_key(key);
 }
 
+inline bool is_pointer_well_formed(std::string_view json_pointer) noexcept {
+  if (simdjson_unlikely(json_pointer[0] != '/')) {
+    return false;
+  }
+  size_t escape = json_pointer.find('~');
+  if (escape == std::string_view::npos) {
+    return true;
+  }
+  if (escape == json_pointer.size() - 1) {
+    return false;
+  }
+  if (json_pointer[escape + 1] != '0' && json_pointer[escape + 1] != '1') {
+    return false;
+  }
+  return true;
+}
+
 inline simdjson_result<element> element::at_pointer(std::string_view json_pointer) const noexcept {
   SIMDJSON_DEVELOPMENT_ASSERT(tape.usable()); // https://github.com/simdjson/simdjson/issues/1914
   switch (tape.tape_ref_type()) {
@@ -383,7 +400,10 @@ inline simdjson_result<element> element::at_pointer(std::string_view json_pointe
     case internal::tape_type::START_ARRAY:
       return array(tape).at_pointer(json_pointer);
     default: {
-      if(!json_pointer.empty()) { // a non-empty string is invalid on an atom
+      if (!json_pointer.empty()) { // a non-empty string can be invalid, or accessing a primitive (issue 2154)
+        if (is_pointer_well_formed(json_pointer)) {
+          return NO_SUCH_FIELD;
+        }
         return INVALID_JSON_POINTER;
       }
       // an empty string means that we return the current node

include/simdjson/dom/element.h

@@ -293,7 +293,7 @@ public:
    *
    * @return The integer value.
    * @exception simdjson_error(INCORRECT_TYPE) if the JSON element is not an integer
-   * @exception simdjson_error(NUMBER_OUT_OF_RANGE) if the integer doesn't fit in 64 bits or is negative
+   * @exception simdjson_error(NUMBER_OUT_OF_RANGE) if the integer does not fit in 64 bits or is negative
    */
   inline operator uint64_t() const noexcept(false);
   /**
@@ -301,7 +301,7 @@ public:
    *
    * @return The integer value.
    * @exception simdjson_error(INCORRECT_TYPE) if the JSON element is not an integer
-   * @exception simdjson_error(NUMBER_OUT_OF_RANGE) if the integer doesn't fit in 64 bits
+   * @exception simdjson_error(NUMBER_OUT_OF_RANGE) if the integer does not fit in 64 bits
    */
   inline operator int64_t() const noexcept(false);
   /**
@@ -309,7 +309,6 @@ public:
    *
    * @return The double value.
    * @exception simdjson_error(INCORRECT_TYPE) if the JSON element is not a number
-   * @exception simdjson_error(NUMBER_OUT_OF_RANGE) if the integer doesn't fit in 64 bits or is negative
    */
   inline operator double() const noexcept(false);
   /**

include/simdjson/dom/jsonparser.h

@@ -1,121 +0,0 @@
-// TODO Remove this -- deprecated API and files
-
-#ifndef SIMDJSON_DOM_JSONPARSER_H
-#define SIMDJSON_DOM_JSONPARSER_H
-
-#include "simdjson/dom/base.h"
-#include "simdjson/dom/parser.h"
-#include "simdjson/dom/element.h"
-
-#include "simdjson/dom/parser-inl.h"
-
-namespace simdjson {
-
-//
-// C API (json_parse and build_parsed_json) declarations
-//
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-[[deprecated("Use parser.parse() instead")]]
-inline int json_parse(const uint8_t *buf, size_t len, dom::parser &parser, bool realloc_if_needed = true) noexcept {
-  error_code code = parser.parse(buf, len, realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return code;
-}
-[[deprecated("Use parser.parse() instead")]]
-inline int json_parse(const char *buf, size_t len, dom::parser &parser, bool realloc_if_needed = true) noexcept {
-  error_code code = parser.parse(buf, len, realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return code;
-}
-[[deprecated("Use parser.parse() instead")]]
-inline int json_parse(const std::string &s, dom::parser &parser, bool realloc_if_needed = true) noexcept {
-  error_code code = parser.parse(s.data(), s.length(), realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return code;
-}
-[[deprecated("Use parser.parse() instead")]]
-inline int json_parse(const padded_string &s, dom::parser &parser) noexcept {
-  error_code code = parser.parse(s).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return code;
-}
-
-[[deprecated("Use parser.parse() instead")]]
-simdjson_warn_unused inline dom::parser build_parsed_json(const uint8_t *buf, size_t len, bool realloc_if_needed = true) noexcept {
-  dom::parser parser;
-  error_code code = parser.parse(buf, len, realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return parser;
-}
-[[deprecated("Use parser.parse() instead")]]
-simdjson_warn_unused inline dom::parser build_parsed_json(const char *buf, size_t len, bool realloc_if_needed = true) noexcept {
-  dom::parser parser;
-  error_code code = parser.parse(buf, len, realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return parser;
-}
-[[deprecated("Use parser.parse() instead")]]
-simdjson_warn_unused inline dom::parser build_parsed_json(const std::string &s, bool realloc_if_needed = true) noexcept {
-  dom::parser parser;
-  error_code code = parser.parse(s.data(), s.length(), realloc_if_needed).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return parser;
-}
-[[deprecated("Use parser.parse() instead")]]
-simdjson_warn_unused inline dom::parser build_parsed_json(const padded_string &s) noexcept {
-  dom::parser parser;
-  error_code code = parser.parse(s).error();
-  // The deprecated json_parse API is a signal that the user plans to *use* the error code / valid
-  // bits in the parser instead of heeding the result code. The normal parser unsets those in
-  // anticipation of making the error code ephemeral.
-  // Here we put the code back into the parser, until we've removed this method.
-  parser.valid = code == SUCCESS;
-  parser.error = code;
-  return parser;
-}
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
-/** @private We do not want to allow implicit conversion from C string to std::string. */
-int json_parse(const char *buf, dom::parser &parser) noexcept = delete;
-/** @private We do not want to allow implicit conversion from C string to std::string. */
-dom::parser build_parsed_json(const char *buf) noexcept = delete;
-
-} // namespace simdjson
-
-#endif // SIMDJSON_DOM_JSONPARSER_H

include/simdjson/dom/object.h

@@ -18,13 +18,16 @@ public:
 
   class iterator {
   public:
-    using value_type = key_value_pair;
+    using value_type = const key_value_pair;
     using difference_type = std::ptrdiff_t;
+    using pointer = void;
+    using reference = value_type;
+    using iterator_category = std::forward_iterator_tag;
 
     /**
      * Get the actual key/value pair
      */
-    inline const value_type operator*() const noexcept;
+    inline reference operator*() const noexcept;
     /**
      * Get the next key/value pair.
      *

include/simdjson/dom/parsedjson.h

@@ -1,17 +0,0 @@
-// TODO Remove this -- deprecated API and files
-
-#ifndef SIMDJSON_DOM_PARSEDJSON_H
-#define SIMDJSON_DOM_PARSEDJSON_H
-
-#include "simdjson/dom/base.h"
-
-namespace simdjson {
-
-/**
- * @deprecated Use `dom::parser` instead.
- */
-using ParsedJson [[deprecated("Use dom::parser instead")]] = dom::parser;
-
-} // namespace simdjson
-
-#endif // SIMDJSON_DOM_PARSEDJSON_H

include/simdjson/dom/parsedjson_iterator-inl.h

@@ -1,545 +0,0 @@
-#ifndef SIMDJSON_PARSEDJSON_ITERATOR_INL_H
-#define SIMDJSON_PARSEDJSON_ITERATOR_INL_H
-
-#include "simdjson/dom/base.h"
-#include "simdjson/dom/parsedjson_iterator.h"
-#include "simdjson/internal/jsonformatutils.h"
-
-#include "simdjson/dom/parser-inl.h"
-#include "simdjson/internal/tape_ref-inl.h"
-
-#include <cstring>
-#include <iterator>
-#include <limits>
-#include <ostream>
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-
-namespace simdjson {
-
-// VS2017 reports deprecated warnings when you define a deprecated class's methods.
-SIMDJSON_PUSH_DISABLE_WARNINGS
-SIMDJSON_DISABLE_DEPRECATED_WARNING
-
-// Because of template weirdness, the actual class definition is inline in the document class
-simdjson_warn_unused bool dom::parser::Iterator::is_ok() const {
-  return location < tape_length;
-}
-
-// useful for debugging purposes
-size_t dom::parser::Iterator::get_tape_location() const {
-  return location;
-}
-
-// useful for debugging purposes
-size_t dom::parser::Iterator::get_tape_length() const {
-  return tape_length;
-}
-
-// returns the current depth (start at 1 with 0 reserved for the fictitious root
-// node)
-size_t dom::parser::Iterator::get_depth() const {
-  return depth;
-}
-
-// A scope is a series of nodes at the same depth, typically it is either an
-// object ({) or an array ([). The root node has type 'r'.
-uint8_t dom::parser::Iterator::get_scope_type() const {
-  return depth_index[depth].scope_type;
-}
-
-bool dom::parser::Iterator::move_forward() {
-  if (location + 1 >= tape_length) {
-    return false; // we are at the end!
-  }
-
-  if ((current_type == '[') || (current_type == '{')) {
-    // We are entering a new scope
-    depth++;
-    assert(depth < max_depth);
-    depth_index[depth].start_of_scope = location;
-    depth_index[depth].scope_type = current_type;
-  } else if ((current_type == ']') || (current_type == '}')) {
-    // Leaving a scope.
-    depth--;
-  } else if (is_number()) {
-    // these types use 2 locations on the tape, not just one.
-    location += 1;
-  }
-
-  location += 1;
-  current_val = doc.tape[location];
-  current_type = uint8_t(current_val >> 56);
-  return true;
-}
-
-void dom::parser::Iterator::move_to_value() {
-  // assume that we are on a key, so move by 1.
-  location += 1;
-  current_val = doc.tape[location];
-  current_type = uint8_t(current_val >> 56);
-}
-
-bool dom::parser::Iterator::move_to_key(const char *key) {
-    if (down()) {
-      do {
-        const bool right_key = (strcmp(get_string(), key) == 0);
-        move_to_value();
-        if (right_key) {
-          return true;
-        }
-      } while (next());
-      up();
-    }
-    return false;
-}
-
-bool dom::parser::Iterator::move_to_key_insensitive(
-    const char *key) {
-    if (down()) {
-      do {
-        const bool right_key = (simdjson_strcasecmp(get_string(), key) == 0);
-        move_to_value();
-        if (right_key) {
-          return true;
-        }
-      } while (next());
-      up();
-    }
-    return false;
-}
-
-bool dom::parser::Iterator::move_to_key(const char *key,
-                                                       uint32_t length) {
-  if (down()) {
-    do {
-      bool right_key = ((get_string_length() == length) &&
-                        (memcmp(get_string(), key, length) == 0));
-      move_to_value();
-      if (right_key) {
-        return true;
-      }
-    } while (next());
-    up();
-  }
-  return false;
-}
-
-bool dom::parser::Iterator::move_to_index(uint32_t index) {
-  if (down()) {
-    uint32_t i = 0;
-    for (; i < index; i++) {
-      if (!next()) {
-        break;
-      }
-    }
-    if (i == index) {
-      return true;
-    }
-    up();
-  }
-  return false;
-}
-
-bool dom::parser::Iterator::prev() {
-  size_t target_location = location;
-  to_start_scope();
-  size_t npos = location;
-  if (target_location == npos) {
-    return false; // we were already at the start
-  }
-  size_t oldnpos;
-  // we have that npos < target_location here
-  do {
-    oldnpos = npos;
-    if ((current_type == '[') || (current_type == '{')) {
-      // we need to jump
-      npos = uint32_t(current_val);
-    } else {
-      npos = npos + ((current_type == 'd' || current_type == 'l') ? 2 : 1);
-    }
-  } while (npos < target_location);
-  location = oldnpos;
-  current_val = doc.tape[location];
-  current_type = uint8_t(current_val >> 56);
-  return true;
-}
-
-bool dom::parser::Iterator::up() {
-  if (depth == 1) {
-    return false; // don't allow moving back to root
-  }
-  to_start_scope();
-  // next we just move to the previous value
-  depth--;
-  location -= 1;
-  current_val = doc.tape[location];
-  current_type = uint8_t(current_val >> 56);
-  return true;
-}
-
-bool dom::parser::Iterator::down() {
-  if (location + 1 >= tape_length) {
-    return false;
-  }
-  if ((current_type == '[') || (current_type == '{')) {
-    size_t npos = uint32_t(current_val);
-    if (npos == location + 2) {
-      return false; // we have an empty scope
-    }
-    depth++;
-    assert(depth < max_depth);
-    location = location + 1;
-    depth_index[depth].start_of_scope = location;
-    depth_index[depth].scope_type = current_type;
-    current_val = doc.tape[location];
-    current_type = uint8_t(current_val >> 56);
-    return true;
-  }
-  return false;
-}
-
-void dom::parser::Iterator::to_start_scope() {
-  location = depth_index[depth].start_of_scope;
-  current_val = doc.tape[location];
-  current_type = uint8_t(current_val >> 56);
-}
-
-inline void dom::parser::Iterator::rewind() {
-    while (up())
-    ;
-}
-
-
-bool dom::parser::Iterator::next() {
-  size_t npos;
-  if ((current_type == '[') || (current_type == '{')) {
-    // we need to jump
-    npos = uint32_t(current_val);
-  } else {
-    npos = location + (is_number() ? 2 : 1);
-  }
-  uint64_t next_val = doc.tape[npos];
-  uint8_t next_type = uint8_t(next_val >> 56);
-  if ((next_type == ']') || (next_type == '}')) {
-    return false; // we reached the end of the scope
-  }
-  location = npos;
-  current_val = next_val;
-  current_type = next_type;
-  return true;
-}
-dom::parser::Iterator::Iterator(const dom::parser &pj) noexcept(false)
-    : doc(pj.doc)
-{
-#if SIMDJSON_EXCEPTIONS
-  if (!pj.valid) { throw simdjson_error(pj.error); }
-#else
-  if (!pj.valid) { return; } //  abort() usage is forbidden in the library
-#endif
-
-  max_depth = pj.max_depth();
-  depth_index = new scopeindex_t[max_depth + 1];
-  depth_index[0].start_of_scope = location;
-  current_val = doc.tape[location++];
-  current_type = uint8_t(current_val >> 56);
-  depth_index[0].scope_type = current_type;
-  tape_length = size_t(current_val & internal::JSON_VALUE_MASK);
-  if (location < tape_length) {
-    // If we make it here, then depth_capacity must >=2, but the compiler
-    // may not know this.
-    current_val = doc.tape[location];
-    current_type = uint8_t(current_val >> 56);
-    depth++;
-    assert(depth < max_depth);
-    depth_index[depth].start_of_scope = location;
-    depth_index[depth].scope_type = current_type;
-  }
-}
-dom::parser::Iterator::Iterator(
-    const dom::parser::Iterator &o) noexcept
-    : doc(o.doc),
-    max_depth(o.depth),
-    depth(o.depth),
-    location(o.location),
-    tape_length(o.tape_length),
-    current_type(o.current_type),
-    current_val(o.current_val)
-{
-  depth_index = new scopeindex_t[max_depth+1];
-  std::memcpy(depth_index, o.depth_index, (depth + 1) * sizeof(depth_index[0]));
-}
-
-dom::parser::Iterator::~Iterator() noexcept {
-  if (depth_index) { delete[] depth_index; }
-}
-
-bool dom::parser::Iterator::print(std::ostream &os, bool escape_strings) const {
-  if (!is_ok()) {
-    return false;
-  }
-  switch (current_type) {
-  case '"': // we have a string
-    os << '"';
-    if (escape_strings) {
-      os << internal::escape_json_string(std::string_view(get_string(), get_string_length()));
-    } else {
-      // was: os << get_string();, but given that we can include null chars, we
-      // have to do something crazier:
-      std::copy(get_string(), get_string() + get_string_length(), std::ostream_iterator<char>(os));
-    }
-    os << '"';
-    break;
-  case 'l': // we have a long int
-    os << get_integer();
-    break;
-  case 'u':
-    os << get_unsigned_integer();
-    break;
-  case 'd':
-    os << get_double();
-    break;
-  case 'n': // we have a null
-    os << "null";
-    break;
-  case 't': // we have a true
-    os << "true";
-    break;
-  case 'f': // we have a false
-    os << "false";
-    break;
-  case '{': // we have an object
-  case '}': // we end an object
-  case '[': // we start an array
-  case ']': // we end an array
-    os << char(current_type);
-    break;
-  default:
-    return false;
-  }
-  return true;
-}
-
-bool dom::parser::Iterator::move_to(const char *pointer,
-                                                   uint32_t length) {
-  char *new_pointer = nullptr;
-  if (pointer[0] == '#') {
-    // Converting fragment representation to string representation
-    new_pointer = new char[length];
-    uint32_t new_length = 0;
-    for (uint32_t i = 1; i < length; i++) {
-      if (pointer[i] == '%' && pointer[i + 1] == 'x') {
-#if __cpp_exceptions
-        try {
-#endif
-          int fragment =
-              std::stoi(std::string(&pointer[i + 2], 2), nullptr, 16);
-          if (fragment == '\\' || fragment == '"' || (fragment <= 0x1F)) {
-            // escaping the character
-            new_pointer[new_length] = '\\';
-            new_length++;
-          }
-          new_pointer[new_length] = char(fragment);
-          i += 3;
-#if __cpp_exceptions
-        } catch (std::invalid_argument &) {
-          delete[] new_pointer;
-          return false; // the fragment is invalid
-        }
-#endif
-      } else {
-        new_pointer[new_length] = pointer[i];
-      }
-      new_length++;
-    }
-    length = new_length;
-    pointer = new_pointer;
-  }
-
-  // saving the current state
-  size_t depth_s = depth;
-  size_t location_s = location;
-  uint8_t current_type_s = current_type;
-  uint64_t current_val_s = current_val;
-
-  rewind(); // The json pointer is used from the root of the document.
-
-  bool found = relative_move_to(pointer, length);
-  delete[] new_pointer;
-
-  if (!found) {
-    // since the pointer has found nothing, we get back to the original
-    // position.
-    depth = depth_s;
-    location = location_s;
-    current_type = current_type_s;
-    current_val = current_val_s;
-  }
-
-  return found;
-}
-
-inline bool dom::parser::Iterator::move_to(const std::string &pointer) {
-  return move_to(pointer.c_str(), uint32_t(pointer.length()));
-}
-
-inline int64_t dom::parser::Iterator::get_integer() const {
-    if (location + 1 >= tape_length) {
-    return 0; // default value in case of error
-    }
-    return static_cast<int64_t>(doc.tape[location + 1]);
-}
-
-inline uint64_t dom::parser::Iterator::get_unsigned_integer() const {
-    if (location + 1 >= tape_length) {
-    return 0; // default value in case of error
-    }
-    return doc.tape[location + 1];
-}
-
-inline const char * dom::parser::Iterator::get_string() const {
-    return reinterpret_cast<const char *>(
-        doc.string_buf.get() + (current_val & internal::JSON_VALUE_MASK) + sizeof(uint32_t));
-}
-
-inline uint32_t dom::parser::Iterator::get_string_length() const {
-    uint32_t answer;
-    std::memcpy(&answer,
-        reinterpret_cast<const char *>(doc.string_buf.get() +
-                                        (current_val & internal::JSON_VALUE_MASK)),
-        sizeof(uint32_t));
-    return answer;
-}
-
-inline double dom::parser::Iterator::get_double() const {
-    if (location + 1 >= tape_length) {
-    return std::numeric_limits<double>::quiet_NaN(); // default value in
-                                                    // case of error
-    }
-    double answer;
-    std::memcpy(&answer, &doc.tape[location + 1], sizeof(answer));
-    return answer;
-}
-
-bool dom::parser::Iterator::relative_move_to(const char *pointer,
-                                                            uint32_t length) {
-  if (length == 0) {
-    // returns the whole document
-    return true;
-  }
-
-  if (pointer[0] != '/') {
-    // '/' must be the first character
-    return false;
-  }
-
-  // finding the key in an object or the index in an array
-  std::string key_or_index;
-  uint32_t offset = 1;
-
-  // checking for the "-" case
-  if (is_array() && pointer[1] == '-') {
-    if (length != 2) {
-      // the pointer must be exactly "/-"
-      // there can't be anything more after '-' as an index
-      return false;
-    }
-    key_or_index = '-';
-    offset = length; // will skip the loop coming right after
-  }
-
-  // We either transform the first reference token to a valid json key
-  // or we make sure it is a valid index in an array.
-  for (; offset < length; offset++) {
-    if (pointer[offset] == '/') {
-      // beginning of the next key or index
-      break;
-    }
-    if (is_array() && (pointer[offset] < '0' || pointer[offset] > '9')) {
-      // the index of an array must be an integer
-      // we also make sure std::stoi won't discard whitespaces later
-      return false;
-    }
-    if (pointer[offset] == '~') {
-      // "~1" represents "/"
-      if (pointer[offset + 1] == '1') {
-        key_or_index += '/';
-        offset++;
-        continue;
-      }
-      // "~0" represents "~"
-      if (pointer[offset + 1] == '0') {
-        key_or_index += '~';
-        offset++;
-        continue;
-      }
-    }
-    if (pointer[offset] == '\\') {
-      if (pointer[offset + 1] == '\\' || pointer[offset + 1] == '"' ||
-          (pointer[offset + 1] <= 0x1F)) {
-        key_or_index += pointer[offset + 1];
-        offset++;
-        continue;
-      }
-      return false; // invalid escaped character
-    }
-    if (pointer[offset] == '\"') {
-      // unescaped quote character. this is an invalid case.
-      // lets do nothing and assume most pointers will be valid.
-      // it won't find any corresponding json key anyway.
-      // return false;
-    }
-    key_or_index += pointer[offset];
-  }
-
-  bool found = false;
-  if (is_object()) {
-    if (move_to_key(key_or_index.c_str(), uint32_t(key_or_index.length()))) {
-      found = relative_move_to(pointer + offset, length - offset);
-    }
-  } else if (is_array()) {
-    if (key_or_index == "-") { // handling "-" case first
-      if (down()) {
-        while (next())
-          ; // moving to the end of the array
-        // moving to the nonexistent value right after...
-        size_t npos;
-        if ((current_type == '[') || (current_type == '{')) {
-          // we need to jump
-          npos = uint32_t(current_val);
-        } else {
-          npos =
-              location + ((current_type == 'd' || current_type == 'l') ? 2 : 1);
-        }
-        location = npos;
-        current_val = doc.tape[npos];
-        current_type = uint8_t(current_val >> 56);
-        return true; // how could it fail ?
-      }
-    } else { // regular numeric index
-      // The index can't have a leading '0'
-      if (key_or_index[0] == '0' && key_or_index.length() > 1) {
-        return false;
-      }
-      // it cannot be empty
-      if (key_or_index.length() == 0) {
-        return false;
-      }
-      // we already checked the index contains only valid digits
-      uint32_t index = std::stoi(key_or_index);
-      if (move_to_index(index)) {
-        found = relative_move_to(pointer + offset, length - offset);
-      }
-    }
-  }
-
-  return found;
-}
-
-SIMDJSON_POP_DISABLE_WARNINGS
-} // namespace simdjson
-
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
-
-#endif // SIMDJSON_PARSEDJSON_ITERATOR_INL_H

include/simdjson/dom/parsedjson_iterator.h

@@ -1,231 +0,0 @@
-// TODO Remove this -- deprecated API and files
-
-#ifndef SIMDJSON_DOM_PARSEDJSON_ITERATOR_H
-#define SIMDJSON_DOM_PARSEDJSON_ITERATOR_H
-
-#include "simdjson/dom/base.h"
-#include "simdjson/dom/parser.h"
-
-#ifndef SIMDJSON_DISABLE_DEPRECATED_API
-
-namespace simdjson {
-/** @private **/
-class [[deprecated("Use the new DOM navigation API instead (see doc/basics.md)")]] dom::parser::Iterator {
-public:
-  inline Iterator(const dom::parser &parser) noexcept(false);
-  inline Iterator(const Iterator &o) noexcept;
-  inline ~Iterator() noexcept;
-
-  inline Iterator& operator=(const Iterator&) = delete;
-
-  inline bool is_ok() const;
-
-  // useful for debugging purposes
-  inline size_t get_tape_location() const;
-
-  // useful for debugging purposes
-  inline size_t get_tape_length() const;
-
-  // returns the current depth (start at 1 with 0 reserved for the fictitious
-  // root node)
-  inline size_t get_depth() const;
-
-  // A scope is a series of nodes at the same depth, typically it is either an
-  // object ({) or an array ([). The root node has type 'r'.
-  inline uint8_t get_scope_type() const;
-
-  // move forward in document order
-  inline bool move_forward();
-
-  // retrieve the character code of what we're looking at:
-  // [{"slutfn are the possibilities
-  inline uint8_t get_type() const {
-      return current_type; // short functions should be inlined!
-  }
-
-  // get the int64_t value at this node; valid only if get_type is "l"
-  inline int64_t get_integer() const;
-
-  // get the value as uint64; valid only if  if get_type is "u"
-  inline uint64_t get_unsigned_integer() const;
-
-  // get the string value at this node (NULL ended); valid only if get_type is "
-  // note that tabs, and line endings are escaped in the returned value (see
-  // print_with_escapes) return value is valid UTF-8, it may contain NULL chars
-  // within the string: get_string_length determines the true string length.
-  inline const char *get_string() const;
-
-  // return the length of the string in bytes
-  inline uint32_t get_string_length() const;
-
-  // get the double value at this node; valid only if
-  // get_type() is "d"
-  inline double get_double() const;
-
-  inline bool is_object_or_array() const { return is_object() || is_array(); }
-
-  inline bool is_object() const { return get_type() == '{'; }
-
-  inline bool is_array() const { return get_type() == '['; }
-
-  inline bool is_string() const { return get_type() == '"'; }
-
-  // Returns true if the current type of the node is an signed integer.
-  // You can get its value with `get_integer()`.
-  inline bool is_integer() const { return get_type() == 'l'; }
-
-  // Returns true if the current type of the node is an unsigned integer.
-  // You can get its value with `get_unsigned_integer()`.
-  //
-  // NOTE:
-  // Only a large value, which is out of range of a 64-bit signed integer, is
-  // represented internally as an unsigned node. On the other hand, a typical
-  // positive integer, such as 1, 42, or 1000000, is as a signed node.
-  // Be aware this function returns false for a signed node.
-  inline bool is_unsigned_integer() const { return get_type() == 'u'; }
-  // Returns true if the current type of the node is a double floating-point number.
-  inline bool is_double() const { return get_type() == 'd'; }
-  // Returns true if the current type of the node is a number (integer or floating-point).
-  inline bool is_number() const {
-      return is_integer() || is_unsigned_integer() || is_double();
-  }
-  // Returns true if the current type of the node is a bool with true value.
-  inline bool is_true() const { return get_type() == 't'; }
-  // Returns true if the current type of the node is a bool with false value.
-  inline bool is_false() const { return get_type() == 'f'; }
-  // Returns true if the current type of the node is null.
-  inline bool is_null() const { return get_type() == 'n'; }
-  // Returns true if the type byte represents an object of an array
-  static bool is_object_or_array(uint8_t type) {
-      return ((type == '[') || (type == '{'));
-  }
-
-  // when at {, go one level deep, looking for a given key
-  // if successful, we are left pointing at the value,
-  // if not, we are still pointing at the object ({)
-  // (in case of repeated keys, this only finds the first one).
-  // We seek the key using C's strcmp so if your JSON strings contain
-  // NULL chars, this would trigger a false positive: if you expect that
-  // to be the case, take extra precautions.
-  // Furthermore, we do the comparison character-by-character
-  // without taking into account Unicode equivalence.
-  inline bool move_to_key(const char *key);
-
-  // as above, but case insensitive lookup (strcmpi instead of strcmp)
-  inline bool move_to_key_insensitive(const char *key);
-
-  // when at {, go one level deep, looking for a given key
-  // if successful, we are left pointing at the value,
-  // if not, we are still pointing at the object ({)
-  // (in case of repeated keys, this only finds the first one).
-  // The string we search for can contain NULL values.
-  // Furthermore, we do the comparison character-by-character
-  // without taking into account Unicode equivalence.
-  inline bool move_to_key(const char *key, uint32_t length);
-
-  // when at a key location within an object, this moves to the accompanying
-  // value (located next to it). This is equivalent but much faster than
-  // calling "next()".
-  inline void move_to_value();
-
-  // when at [, go one level deep, and advance to the given index.
-  // if successful, we are left pointing at the value,
-  // if not, we are still pointing at the array ([)
-  inline bool move_to_index(uint32_t index);
-
-  // Moves the iterator to the value corresponding to the json pointer.
-  // Always search from the root of the document.
-  // if successful, we are left pointing at the value,
-  // if not, we are still pointing the same value we were pointing before the
-  // call. The json pointer follows the rfc6901 standard's syntax:
-  // https://tools.ietf.org/html/rfc6901 However, the standard says "If a
-  // referenced member name is not unique in an object, the member that is
-  // referenced is undefined, and evaluation fails". Here we just return the
-  // first corresponding value. The length parameter is the length of the
-  // jsonpointer string ('pointer').
-  inline bool move_to(const char *pointer, uint32_t length);
-
-  // Moves the iterator to the value corresponding to the json pointer.
-  // Always search from the root of the document.
-  // if successful, we are left pointing at the value,
-  // if not, we are still pointing the same value we were pointing before the
-  // call. The json pointer implementation follows the rfc6901 standard's
-  // syntax: https://tools.ietf.org/html/rfc6901 However, the standard says
-  // "If a referenced member name is not unique in an object, the member that
-  // is referenced is undefined, and evaluation fails". Here we just return
-  // the first corresponding value.
-  inline bool move_to(const std::string &pointer);
-
-  private:
-  // Almost the same as move_to(), except it searches from the current
-  // position. The pointer's syntax is identical, though that case is not
-  // handled by the rfc6901 standard. The '/' is still required at the
-  // beginning. However, contrary to move_to(), the URI Fragment Identifier
-  // Representation is not supported here. Also, in case of failure, we are
-  // left pointing at the closest value it could reach. For these reasons it
-  // is private. It exists because it is used by move_to().
-  inline bool relative_move_to(const char *pointer, uint32_t length);
-
-  public:
-  // throughout return true if we can do the navigation, false
-  // otherwise
-
-  // Within a given scope (series of nodes at the same depth within either an
-  // array or an object), we move forward.
-  // Thus, given [true, null, {"a":1}, [1,2]], we would visit true, null, {
-  // and [. At the object ({) or at the array ([), you can issue a "down" to
-  // visit their content. valid if we're not at the end of a scope (returns
-  // true).
-  inline bool next();
-
-  // Within a given scope (series of nodes at the same depth within either an
-  // array or an object), we move backward.
-  // Thus, given [true, null, {"a":1}, [1,2]], we would visit ], }, null, true
-  // when starting at the end of the scope. At the object ({) or at the array
-  // ([), you can issue a "down" to visit their content.
-  // Performance warning: This function is implemented by starting again
-  // from the beginning of the scope and scanning forward. You should expect
-  // it to be relatively slow.
-  inline bool prev();
-
-  // Moves back to either the containing array or object (type { or [) from
-  // within a contained scope.
-  // Valid unless we are at the first level of the document
-  inline bool up();
-
-  // Valid if we're at a [ or { and it starts a non-empty scope; moves us to
-  // start of that deeper scope if it not empty. Thus, given [true, null,
-  // {"a":1}, [1,2]], if we are at the { node, we would move to the "a" node.
-  inline bool down();
-
-  // move us to the start of our current scope,
-  // a scope is a series of nodes at the same level
-  inline void to_start_scope();
-
-  inline void rewind();
-
-
-
-  // print the node we are currently pointing at
-  inline bool print(std::ostream &os, bool escape_strings = true) const;
-
-  private:
-  const document &doc;
-  size_t max_depth{};
-  size_t depth{};
-  size_t location{}; // our current location on a tape
-  size_t tape_length{};
-  uint8_t current_type{};
-  uint64_t current_val{};
-  typedef struct {
-      size_t start_of_scope;
-      uint8_t scope_type;
-  } scopeindex_t;
-
-  scopeindex_t *depth_index{};
-};
-
-} // namespace simdjson
-#endif // SIMDJSON_DISABLE_DEPRECATED_API
-
-#endif // SIMDJSON_DOM_PARSEDJSON_ITERATOR_H

include/simdjson/dom/parser-inl.h

@@ -191,7 +191,7 @@ simdjson_inline size_t parser::capacity() const noexcept {
 simdjson_inline size_t parser::max_capacity() const noexcept {
   return _max_capacity;
 }
-simdjson_inline size_t parser::max_depth() const noexcept {
+simdjson_pure simdjson_inline size_t parser::max_depth() const noexcept {
   return implementation ? implementation->max_depth() : DEFAULT_MAX_DEPTH;
 }
 

include/simdjson/dom/parser.h

@@ -83,6 +83,15 @@ public:
    * If the parser's current capacity is less than the file length, it will allocate enough capacity
    * to handle it (up to max_capacity).
    *
+   * ## Windows and Unicode
+   *
+   * Windows users who need to read files with non-ANSI characters in the
+   * name should set their code page to UTF-8 (65001) before calling this
+   * function. This should be the default with Windows 11 and better.
+   * Further, they may use the AreFileApisANSI function to determine whether
+   * the filename is interpreted using the ANSI or the system default OEM
+   * codepage, and they may call SetFileApisToOEM accordingly.
+   *
    * @param path The path to load.
    * @return The document, or an error:
    *         - IO_ERROR if there was an error opening or reading the file.
@@ -518,7 +527,7 @@ public:
    *
    * @return Maximum depth, in bytes.
    */
-  simdjson_inline size_t max_depth() const noexcept;
+  simdjson_pure simdjson_inline size_t max_depth() const noexcept;
 
   /**
    * Set max_capacity. This is the largest document this parser can automatically support.

include/simdjson/dom/serialization.h

@@ -57,15 +57,15 @@ public:
   simdjson_inline void one_char(char c);
 
   simdjson_inline void call_print_newline() {
-      this->print_newline();
+      static_cast<formatter*>(this)->print_newline();
   }
 
   simdjson_inline void call_print_indents(size_t depth) {
-      this->print_indents(depth);
+      static_cast<formatter*>(this)->print_indents(depth);
   }
 
   simdjson_inline void call_print_space() {
-      this->print_space();
+      static_cast<formatter*>(this)->print_space();
   }
 
 protected:

include/simdjson/error.h

@@ -27,6 +27,7 @@ enum error_code {
   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
+  BIGINT_ERROR,               ///< The integer value exceeds 64 bits
   UTF8_ERROR,                 ///< the input is not valid UTF-8
   UNINITIALIZED,              ///< unknown error, or uninitialized document
   EMPTY,                      ///< no structural element found
@@ -38,7 +39,7 @@ enum error_code {
   INDEX_OUT_OF_BOUNDS,        ///< JSON array index too large
   NO_SUCH_FIELD,              ///< JSON field not found in object
   IO_ERROR,                   ///< Error reading a file
-  INVALID_JSON_POINTER,       ///< Invalid JSON pointer reference
+  INVALID_JSON_POINTER,       ///< Invalid JSON pointer syntax
   INVALID_URI_FRAGMENT,       ///< Invalid URI fragment
   UNEXPECTED_ERROR,           ///< indicative of a bug in simdjson
   PARSER_IN_USE,              ///< parser is already in use.

include/simdjson/fallback/numberparsing_defs.h

@@ -56,13 +56,13 @@ static simdjson_inline uint64_t _umul128(uint64_t ab, uint64_t cd, uint64_t *hi)
 simdjson_inline internal::value128 full_multiplication(uint64_t value1, uint64_t value2) {
   internal::value128 answer;
 #if SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
-#ifdef _M_ARM64
+#if SIMDJSON_IS_ARM64
   // ARM64 has native support for 64-bit multiplications, no need to emultate
   answer.high = __umulh(value1, value2);
   answer.low = value1 * value2;
 #else
   answer.low = _umul128(value1, value2, &answer.high); // _umul128 not available on ARM64
-#endif // _M_ARM64
+#endif // SIMDJSON_IS_ARM64
 #else // SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
   __uint128_t r = (static_cast<__uint128_t>(value1)) * value2;
   answer.low = uint64_t(r);

include/simdjson/generic/base.h

@@ -17,6 +17,10 @@
 #include "simdjson/arm64/begin.h"
 #elif SIMDJSON_IMPLEMENTATION_PPC64
 #include "simdjson/ppc64/begin.h"
+#elif SIMDJSON_IMPLEMENTATION_LSX
+#include "simdjson/lsx/begin.h"
+#elif SIMDJSON_IMPLEMENTATION_LASX
+#include "simdjson/lasx/begin.h"
 #elif SIMDJSON_IMPLEMENTATION_FALLBACK
 #include "simdjson/fallback/begin.h"
 #else
@@ -37,7 +41,8 @@ class dom_parser_implementation;
 enum class number_type {
     floating_point_number=1, /// a binary64 number
     signed_integer,          /// a signed integer that fits in a 64-bit word using two's complement
-    unsigned_integer         /// a positive integer larger or equal to 1<<63
+    unsigned_integer,        /// a positive integer larger or equal to 1<<63
+    big_integer              /// a big integer that does not fit in a 64-bit word
 };
 
 } // namespace SIMDJSON_IMPLEMENTATION

include/simdjson/generic/numberparsing.h

@@ -20,11 +20,13 @@ namespace numberparsing {
 #define WRITE_INTEGER(VALUE, SRC, WRITER) (found_integer((VALUE), (SRC)), (WRITER).append_s64((VALUE)))
 #define WRITE_UNSIGNED(VALUE, SRC, WRITER) (found_unsigned_integer((VALUE), (SRC)), (WRITER).append_u64((VALUE)))
 #define WRITE_DOUBLE(VALUE, SRC, WRITER) (found_float((VALUE), (SRC)), (WRITER).append_double((VALUE)))
+#define BIGINT_NUMBER(SRC) (found_invalid_number((SRC)), BIGINT_ERROR)
 #else
 #define INVALID_NUMBER(SRC) (NUMBER_ERROR)
 #define WRITE_INTEGER(VALUE, SRC, WRITER) (WRITER).append_s64((VALUE))
 #define WRITE_UNSIGNED(VALUE, SRC, WRITER) (WRITER).append_u64((VALUE))
 #define WRITE_DOUBLE(VALUE, SRC, WRITER) (WRITER).append_double((VALUE))
+#define BIGINT_NUMBER(SRC) (BIGINT_ERROR)
 #endif
 
 namespace {
@@ -355,6 +357,10 @@ simdjson_inline bool parse_digit(const uint8_t c, I &i) {
   return true;
 }
 
+simdjson_inline bool is_digit(const uint8_t c) {
+  return static_cast<uint8_t>(c - '0') <= 9;
+}
+
 simdjson_inline error_code parse_decimal_after_separator(simdjson_unused const uint8_t *const src, const uint8_t *&p, uint64_t &i, int64_t &exponent) {
   // we continue with the fiction that we have an integer. If the
   // floating point number is representable as x * 10^z for some integer
@@ -412,7 +418,7 @@ simdjson_inline error_code parse_exponent(simdjson_unused const uint8_t *const s
   // If there were more than 18 digits, we may have overflowed the integer. We have to do
   // something!!!!
   if (simdjson_unlikely(p > start_exp+18)) {
-    // Skip leading zeroes: 1e000000000000000000001 is technically valid and doesn't overflow
+    // Skip leading zeroes: 1e000000000000000000001 is technically valid and does not overflow
     while (*start_exp == '0') { start_exp++; }
     // 19 digits could overflow int64_t and is kind of absurd anyway. We don't
     // support exponents smaller than -999,999,999,999,999,999 and bigger
@@ -434,6 +440,23 @@ simdjson_inline error_code parse_exponent(simdjson_unused const uint8_t *const s
   return SUCCESS;
 }
 
+simdjson_inline bool check_if_integer(const uint8_t *const src, size_t max_length) {
+  const uint8_t *const srcend = src + max_length;
+  bool negative = (*src == '-'); // we can always read at least one character after the '-'
+  const uint8_t *p = src + uint8_t(negative);
+  if(p == srcend) { return false; }
+  if(*p == '0') {
+    ++p;
+    if(p == srcend) { return true; }
+    if(jsoncharutils::is_not_structural_or_whitespace(*p)) { return false; }
+    return true;
+  }
+  while(p != srcend && is_digit(*p)) { ++p; }
+  if(p == srcend) { return true; }
+  if(jsoncharutils::is_not_structural_or_whitespace(*p)) { return false; }
+  return true;
+}
+
 simdjson_inline size_t significant_digits(const uint8_t * start_digits, size_t digit_count) {
   // It is possible that the integer had an overflow.
   // We have to handle the case where we have 0.0000somenumber.
@@ -508,6 +531,18 @@ simdjson_inline error_code write_float(const uint8_t *const src, bool negative,
   return SUCCESS;
 }
 
+// parse the number at src
+// define JSON_TEST_NUMBERS for unit testing
+//
+// It is assumed that the number is followed by a structural ({,},],[) character
+// or a white space character. If that is not the case (e.g., when the JSON
+// document is made of a single number), then it is necessary to copy the
+// content and append a space before calling this function.
+//
+// Our objective is accurate parsing (ULP of 0) at high speed.
+template<typename W>
+simdjson_inline error_code parse_number(const uint8_t *const src, W &writer);
+
 // for performance analysis, it is sometimes  useful to skip parsing
 #ifdef SIMDJSON_SKIPNUMBERPARSING
 
@@ -586,11 +621,11 @@ simdjson_inline error_code parse_number(const uint8_t *const src, W &writer) {
   // The longest positive 64-bit number is 20 digits.
   // We do it this way so we don't trigger this branch unless we must.
   size_t longest_digit_count = negative ? 19 : 20;
-  if (digit_count > longest_digit_count) { return INVALID_NUMBER(src); }
+  if (digit_count > longest_digit_count) { return BIGINT_NUMBER(src); }
   if (digit_count == longest_digit_count) {
     if (negative) {
       // Anything negative above INT64_MAX+1 is invalid
-      if (i > uint64_t(INT64_MAX)+1) { return INVALID_NUMBER(src);  }
+      if (i > uint64_t(INT64_MAX)+1) { return BIGINT_NUMBER(src);  }
       WRITE_INTEGER(~i+1, src, writer);
       if (jsoncharutils::is_not_structural_or_whitespace(*p)) { return INVALID_NUMBER(src); }
       return SUCCESS;
@@ -609,7 +644,7 @@ simdjson_inline error_code parse_number(const uint8_t *const src, W &writer) {
     }  else if (src[0] != uint8_t('1') || i <= uint64_t(INT64_MAX)) { return INVALID_NUMBER(src); }
   }
 
-  // Write unsigned if it doesn't fit in a signed integer.
+  // Write unsigned if it does not fit in a signed integer.
   if (i > uint64_t(INT64_MAX)) {
     WRITE_UNSIGNED(i, src, writer);
   } else {
@@ -1060,19 +1095,32 @@ simdjson_unused simdjson_inline simdjson_result<number_type> get_number_type(con
   src += uint8_t(negative);
   const uint8_t *p = src;
   while(static_cast<uint8_t>(*p - '0') <= 9) { p++; }
+  size_t digit_count = size_t(p - src);
   if ( p == src ) { return NUMBER_ERROR; }
   if (jsoncharutils::is_structural_or_whitespace(*p)) {
+    static const uint8_t * smaller_big_integer = reinterpret_cast<const uint8_t *>("9223372036854775808");
     // We have an integer.
+    if(simdjson_unlikely(digit_count > 20)) {
+      return number_type::big_integer;
+    }
     // If the number is negative and valid, it must be a signed integer.
-    if(negative) { return number_type::signed_integer; }
+    if(negative) {
+      if (simdjson_unlikely(digit_count > 19)) return number_type::big_integer;
+      if (simdjson_unlikely(digit_count == 19 && memcmp(src, smaller_big_integer, 19) > 0)) {
+        return number_type::big_integer;
+      }
+      return number_type::signed_integer;
+    }
+    // Let us check if we have a big integer (>=2**64).
+    static const uint8_t * two_to_sixtyfour = reinterpret_cast<const uint8_t *>("18446744073709551616");
+    if((digit_count > 20) || (digit_count == 20 && memcmp(src, two_to_sixtyfour, 20) >= 0)) {
+      return number_type::big_integer;
+    }
+    // The number is positive and smaller than 18446744073709551616 (or 2**64).
     // We want values larger or equal to 9223372036854775808 to be unsigned
     // integers, and the other values to be signed integers.
-    int digit_count = int(p - src);
-    if(digit_count >= 19) {
-      const uint8_t * smaller_big_integer = reinterpret_cast<const uint8_t *>("9223372036854775808");
-      if((digit_count >= 20) || (memcmp(src, smaller_big_integer, 19) >= 0)) {
-        return number_type::unsigned_integer;
-      }
+    if((digit_count == 20) || (digit_count >= 19 && memcmp(src, smaller_big_integer, 19) >= 0)) {
+      return number_type::unsigned_integer;
     }
     return number_type::signed_integer;
   }
@@ -1250,6 +1298,7 @@ inline std::ostream& operator<<(std::ostream& out, number_type type) noexcept {
         case number_type::signed_integer: out << "integer in [-9223372036854775808,9223372036854775808)"; break;
         case number_type::unsigned_integer: out << "unsigned integer in [9223372036854775808,18446744073709551616)"; break;
         case number_type::floating_point_number: out << "floating-point number (binary64)"; break;
+        case number_type::big_integer: out << "big integer"; break;
         default: SIMDJSON_UNREACHABLE();
     }
     return out;
@@ -1258,4 +1307,4 @@ inline std::ostream& operator<<(std::ostream& out, number_type type) noexcept {
 } // namespace SIMDJSON_IMPLEMENTATION
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_NUMBERPARSING_H
+#endif // SIMDJSON_GENERIC_NUMBERPARSING_H

include/simdjson/generic/ondemand/array-inl.h

@@ -163,6 +163,59 @@ inline simdjson_result<value> array::at_pointer(std::string_view json_pointer) n
   return child;
 }
 
+inline std::string json_path_to_pointer_conversion(std::string_view json_path) {
+  if (json_path.empty() || (json_path.front() != '.' &&
+      json_path.front() != '[')) {
+    return "-1"; // This is just a sentinel value, the caller should check for this and return an error.
+  }
+
+  std::string result;
+  // Reserve space to reduce allocations, adjusting for potential increases due
+  // to escaping.
+  result.reserve(json_path.size() * 2);
+
+  size_t i = 0;
+
+  while (i < json_path.length()) {
+    if (json_path[i] == '.') {
+      result += '/';
+    } else if (json_path[i] == '[') {
+      result += '/';
+      ++i; // Move past the '['
+      while (i < json_path.length() && json_path[i] != ']') {
+          if (json_path[i] == '~') {
+            result += "~0";
+          } else if (json_path[i] == '/') {
+            result += "~1";
+          } else {
+            result += json_path[i];
+          }
+          ++i;
+      }
+      if (i == json_path.length() || json_path[i] != ']') {
+          return "-1"; // Using sentinel value that will be handled as an error by the caller.
+      }
+    } else {
+      if (json_path[i] == '~') {
+          result += "~0";
+      } else if (json_path[i] == '/') {
+          result += "~1";
+      } else {
+          result += json_path[i];
+      }
+    }
+    ++i;
+  }
+
+  return result;
+}
+
+inline simdjson_result<value> array::at_path(std::string_view json_path) noexcept {
+  auto json_pointer = json_path_to_pointer_conversion(json_path);
+  if (json_pointer == "-1") { return INVALID_JSON_POINTER; }
+  return at_pointer(json_pointer);
+}
+
 simdjson_inline simdjson_result<value> array::at(size_t index) noexcept {
   size_t i = 0;
   for (auto value : *this) {
@@ -217,10 +270,14 @@ simdjson_inline  simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdj
   if (error()) { return error(); }
   return first.at_pointer(json_pointer);
 }
+simdjson_inline  simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array>::at_path(std::string_view json_path) noexcept {
+  if (error()) { return error(); }
+  return first.at_path(json_path);
+}
 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
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_ARRAY_INL_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_ARRAY_INL_H

include/simdjson/generic/ondemand/array.h

@@ -100,6 +100,22 @@ public:
    *         - INVALID_JSON_POINTER if the JSON pointer is invalid and cannot be parsed
    */
   inline simdjson_result<value> at_pointer(std::string_view json_pointer) noexcept;
+
+  /**
+   * Get the value associated with the given JSONPath expression. We only support
+   * JSONPath queries that trivially convertible to JSON Pointer queries: key
+   * names and array indices.
+   *
+   * https://datatracker.ietf.org/doc/html/draft-normington-jsonpath-00
+   *
+   * @return The value associated with the given JSONPath expression, or:
+   *         - INVALID_JSON_POINTER if the JSONPath to JSON Pointer conversion fails
+   *         - NO_SUCH_FIELD if a field does not exist in an object
+   *         - INDEX_OUT_OF_BOUNDS if an array index is larger than an array length
+   *         - INCORRECT_TYPE if a non-integer is used to access an array
+  */
+  inline simdjson_result<value> at_path(std::string_view json_path) noexcept;
+
   /**
    * Consumes the array and returns a string_view instance corresponding to the
    * array as represented in JSON. It points inside the original document.
@@ -190,10 +206,11 @@ 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<SIMDJSON_IMPLEMENTATION::ondemand::value> at_path(std::string_view json_path) noexcept;
   simdjson_inline simdjson_result<std::string_view> raw_json() noexcept;
 
 };
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_ARRAY_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_ARRAY_H

include/simdjson/generic/ondemand/document-inl.h

@@ -7,6 +7,8 @@
 #include "simdjson/generic/ondemand/array_iterator.h"
 #include "simdjson/generic/ondemand/document.h"
 #include "simdjson/generic/ondemand/json_iterator-inl.h"
+#include "simdjson/generic/ondemand/json_path_to_pointer_conversion.h"
+#include "simdjson/generic/ondemand/json_path_to_pointer_conversion-inl.h"
 #include "simdjson/generic/ondemand/json_type.h"
 #include "simdjson/generic/ondemand/object-inl.h"
 #include "simdjson/generic/ondemand/raw_json_string.h"
@@ -181,6 +183,8 @@ template<typename T> simdjson_inline error_code document::get(T &out) && noexcep
 }
 
 #if SIMDJSON_EXCEPTIONS
+template <class T>
+simdjson_inline document::operator T() noexcept(false) { return get<T>(); }
 simdjson_inline document::operator array() & noexcept(false) { return get_array(); }
 simdjson_inline document::operator object() & noexcept(false) { return get_object(); }
 simdjson_inline document::operator uint64_t() noexcept(false) { return get_uint64(); }
@@ -265,6 +269,13 @@ simdjson_inline simdjson_result<bool> document::is_scalar() noexcept {
   return ! ((this_type == json_type::array) || (this_type == json_type::object));
 }
 
+simdjson_inline simdjson_result<bool> document::is_string() noexcept {
+  json_type this_type;
+  auto error = type().get(this_type);
+  if(error) { return error; }
+  return (this_type == json_type::string);
+}
+
 simdjson_inline bool document::is_negative() noexcept {
   return get_root_value_iterator().is_root_negative();
 }
@@ -284,7 +295,7 @@ simdjson_inline simdjson_result<number> document::get_number() noexcept {
 
 simdjson_inline simdjson_result<std::string_view> document::raw_json_token() noexcept {
   auto _iter = get_root_value_iterator();
-  return std::string_view(reinterpret_cast<const char*>(_iter.peek_start()), _iter.peek_start_length());
+  return std::string_view(reinterpret_cast<const char*>(_iter.peek_start()), _iter.peek_root_length());
 }
 
 simdjson_inline simdjson_result<value> document::at_pointer(std::string_view json_pointer) noexcept {
@@ -305,6 +316,23 @@ simdjson_inline simdjson_result<value> document::at_pointer(std::string_view jso
   }
 }
 
+simdjson_inline simdjson_result<value> document::at_path(std::string_view json_path) noexcept {
+  rewind(); // Rewind the document each time at_pointer is called
+  if (json_path.empty()) {
+      return this->get_value();
+  }
+  json_type t;
+  SIMDJSON_TRY(type().get(t));
+  switch (t) {
+  case json_type::array:
+      return (*this).get_array().at_path(json_path);
+  case json_type::object:
+      return (*this).get_object().at_path(json_path);
+  default:
+      return INVALID_JSON_POINTER;
+  }
+}
+
 } // namespace ondemand
 } // namespace SIMDJSON_IMPLEMENTATION
 } // namespace simdjson
@@ -480,6 +508,10 @@ simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::o
   return first.is_scalar();
 }
 
+simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::is_string() noexcept {
+  if (error()) { return error(); }
+  return first.is_string();
+}
 
 simdjson_inline bool simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::is_negative() noexcept {
   if (error()) { return error(); }
@@ -503,6 +535,11 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::number> simdj
 
 
 #if SIMDJSON_EXCEPTIONS
+template <class T, typename std::enable_if<std::is_same<T, SIMDJSON_IMPLEMENTATION::ondemand::document>::value == false>::type>
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::operator T() noexcept(false) {
+  if (error()) { throw simdjson_error(error()); }
+  return first;
+}
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::operator SIMDJSON_IMPLEMENTATION::ondemand::array() & noexcept(false) {
   if (error()) { throw simdjson_error(error()); }
   return first;
@@ -568,6 +605,10 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjs
   return first.at_pointer(json_pointer);
 }
 
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document>::at_path(std::string_view json_path) noexcept {
+  if (error()) { return error(); }
+  return first.at_path(json_path);
+}
 
 } // namespace simdjson
 
@@ -609,15 +650,25 @@ simdjson_inline simdjson_result<raw_json_string> document_reference::get_raw_jso
 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(); }
 simdjson_inline simdjson_result<bool> document_reference::is_null() noexcept { return doc->get_root_value_iterator().is_root_null(false); }
-
+template<> simdjson_inline simdjson_result<array> document_reference::get() & noexcept { return get_array(); }
+template<> simdjson_inline simdjson_result<object> document_reference::get() & noexcept { return get_object(); }
+template<> simdjson_inline simdjson_result<raw_json_string> document_reference::get() & noexcept { return get_raw_json_string(); }
+template<> simdjson_inline simdjson_result<std::string_view> document_reference::get() & noexcept { return get_string(false); }
+template<> simdjson_inline simdjson_result<double> document_reference::get() & noexcept { return get_double(); }
+template<> simdjson_inline simdjson_result<uint64_t> document_reference::get() & noexcept { return get_uint64(); }
+template<> simdjson_inline simdjson_result<int64_t> document_reference::get() & noexcept { return get_int64(); }
+template<> simdjson_inline simdjson_result<bool> document_reference::get() & noexcept { return get_bool(); }
+template<> simdjson_inline simdjson_result<value> document_reference::get() & noexcept { return get_value(); }
 #if SIMDJSON_EXCEPTIONS
+template <class T>
+simdjson_inline document_reference::operator T() noexcept(false) { return get<T>(); }
 simdjson_inline document_reference::operator array() & noexcept(false) { return array(*doc); }
 simdjson_inline document_reference::operator object() & noexcept(false) { return object(*doc); }
 simdjson_inline document_reference::operator uint64_t() noexcept(false) { return get_uint64(); }
 simdjson_inline document_reference::operator int64_t() noexcept(false) { return get_int64(); }
 simdjson_inline document_reference::operator double() noexcept(false) { return get_double(); }
 simdjson_inline document_reference::operator std::string_view() noexcept(false) { return std::string_view(*doc); }
-simdjson_inline document_reference::operator raw_json_string() noexcept(false) { return raw_json_string(*doc); }
+simdjson_inline document_reference::operator raw_json_string() noexcept(false) { return get_raw_json_string(); }
 simdjson_inline document_reference::operator bool() noexcept(false) { return get_bool(); }
 simdjson_inline document_reference::operator value() noexcept(false) { return value(*doc); }
 #endif
@@ -634,6 +685,7 @@ simdjson_inline simdjson_result<value> document_reference::find_field_unordered(
 simdjson_inline simdjson_result<value> document_reference::find_field_unordered(const char *key) & noexcept { return doc->find_field_unordered(key); }
 simdjson_inline simdjson_result<json_type> document_reference::type() noexcept { return doc->type(); }
 simdjson_inline simdjson_result<bool> document_reference::is_scalar() noexcept { return doc->is_scalar(); }
+simdjson_inline simdjson_result<bool> document_reference::is_string() noexcept { return doc->is_string(); }
 simdjson_inline simdjson_result<const char *> document_reference::current_location() noexcept { return doc->current_location(); }
 simdjson_inline int32_t document_reference::current_depth() const noexcept { return doc->current_depth(); }
 simdjson_inline bool document_reference::is_negative() noexcept { return doc->is_negative(); }
@@ -642,6 +694,7 @@ simdjson_inline simdjson_result<number_type> document_reference::get_number_type
 simdjson_inline simdjson_result<number> document_reference::get_number() noexcept { return doc->get_root_value_iterator().get_root_number(false); }
 simdjson_inline simdjson_result<std::string_view> document_reference::raw_json_token() noexcept { return doc->raw_json_token(); }
 simdjson_inline simdjson_result<value> document_reference::at_pointer(std::string_view json_pointer) noexcept { return doc->at_pointer(json_pointer); }
+simdjson_inline simdjson_result<value> document_reference::at_path(std::string_view json_path) noexcept { return doc->at_path(json_path); }
 simdjson_inline simdjson_result<std::string_view> document_reference::raw_json() noexcept { return doc->raw_json();}
 simdjson_inline document_reference::operator document&() const noexcept { return *doc; }
 
@@ -773,6 +826,10 @@ simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::o
   if (error()) { return error(); }
   return first.is_scalar();
 }
+simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::is_string() noexcept {
+  if (error()) { return error(); }
+  return first.is_string();
+}
 simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::is_negative() noexcept {
   if (error()) { return error(); }
   return first.is_negative();
@@ -790,6 +847,11 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::number> simdj
   return first.get_number();
 }
 #if SIMDJSON_EXCEPTIONS
+template <class T, typename std::enable_if<std::is_same<T, SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::value == false>::type>
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::operator T() noexcept(false) {
+  if (error()) { throw simdjson_error(error()); }
+  return first;
+}
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::operator SIMDJSON_IMPLEMENTATION::ondemand::array() & noexcept(false) {
   if (error()) { throw simdjson_error(error()); }
   return first;
@@ -843,7 +905,13 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjs
   return first.at_pointer(json_pointer);
 }
 
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::at_path(std::string_view json_path) noexcept {
+  if (error()) {
+      return error();
+  }
+  return first.at_path(json_path);
+}
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_INL_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_INL_H

include/simdjson/generic/ondemand/document.h

@@ -179,21 +179,23 @@ public:
    * @returns INCORRECT_TYPE If the JSON value is not the given type.
    */
   template<typename T> simdjson_inline simdjson_result<T> get() & noexcept {
-    // Unless the simdjson library provides an inline implementation, calling this method should
+    // Unless the simdjson library or the user provides an inline implementation, calling this method should
     // immediately fail.
     static_assert(!sizeof(T), "The get method with given type is not implemented by the simdjson library. "
       "The supported types are ondemand::object, ondemand::array, raw_json_string, std::string_view, uint64_t, "
       "int64_t, double, and bool. We recommend you use get_double(), get_bool(), get_uint64(), get_int64(), "
-      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template.");
+      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template."
+      " You may also add support for custom types, see our documentation.");
   }
   /** @overload template<typename T> simdjson_result<T> get() & noexcept */
   template<typename T> simdjson_inline simdjson_result<T> get() && noexcept {
-    // Unless the simdjson library provides an inline implementation, calling this method should
+    // Unless the simdjson library or the user provides an inline implementation, calling this method should
     // immediately fail.
     static_assert(!sizeof(T), "The get method with given type is not implemented by the simdjson library. "
       "The supported types are ondemand::object, ondemand::array, raw_json_string, std::string_view, uint64_t, "
       "int64_t, double, and bool. We recommend you use get_double(), get_bool(), get_uint64(), get_int64(), "
-      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template.");
+      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template."
+      " You may also add support for custom types, see our documentation.");
   }
 
   /**
@@ -212,6 +214,17 @@ public:
   template<typename T> simdjson_inline error_code get(T &out) && noexcept;
 
 #if SIMDJSON_EXCEPTIONS
+  /**
+   * Cast this JSON value to an instance of type T. The programmer is responsible for
+   * providing an implementation of get<T> for the type T, if T is not one of the types
+   * supported by the library (object, array, raw_json_string, string_view, uint64_t, etc.)
+   *
+   * See https://github.com/simdjson/simdjson/blob/master/doc/basics.md#adding-support-for-custom-types
+   *
+   * @returns An instance of type T
+   */
+  template <class T>
+  explicit simdjson_inline operator T() noexcept(false);
   /**
    * Cast this JSON value to an array.
    *
@@ -384,7 +397,7 @@ public:
    * APIs assume this. Therefore, you must be explicit if you want to treat objects as out of order.
    *
    * Use find_field() if you are sure fields will be in order (or are willing to treat it as if the
-   * field wasn't there when they aren't).
+   * field was not there when they are not in order).
    *
    * You must consume the fields on an object one at a time. A request for a new key
    * invalidates previous field values: it makes them unsafe. E.g., the array
@@ -430,6 +443,14 @@ public:
    */
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
 
+  /**
+   * Checks whether the document is a string.
+   *
+   * @returns true if the type is string
+   * @error TAPE_ERROR when the JSON value is a bad token like "}" "," or "alse".
+   */
+  simdjson_inline simdjson_result<bool> is_string() noexcept;
+
   /**
    * Checks whether the document is a negative number.
    *
@@ -457,9 +478,11 @@ public:
    * get_number().get_number_type().
    *
    * get_number_type() is number_type::unsigned_integer if we have
-   * an integer greater or equal to 9223372036854775808
+   * an integer greater or equal to 9223372036854775808 and no larger than 18446744073709551615.
    * get_number_type() is number_type::signed_integer if we have an
-   * integer that is less than 9223372036854775808
+   * integer that is less than 9223372036854775808 and greater or equal to -9223372036854775808.
+   * get_number_type() is number_type::big_integer if we have an integer outside
+   * of those ranges (either larger than 18446744073709551615 or smaller than -9223372036854775808).
    * Otherwise, get_number_type() has value number_type::floating_point_number
    *
    * This function requires processing the number string, but it is expected
@@ -577,6 +600,14 @@ public:
    *   auto doc = parser.iterate(json);
    *   doc.at_pointer("//a/1") == 20
    *
+   * Key values are matched exactly, without unescaping or Unicode normalization.
+   * We do a byte-by-byte comparison. E.g.
+   *
+   *   const padded_string json = "{\"\\u00E9\":123}"_padded;
+   *   auto doc = parser.iterate(json);
+   *   doc.at_pointer("/\\u00E9") == 123
+   *   doc.at_pointer((const char*)u8"/\u00E9") returns an error (NO_SUCH_FIELD)
+   *
    * Note that at_pointer() automatically calls rewind between each call. Thus
    * all values, objects and arrays that you have created so far (including unescaped strings)
    * are invalidated. After calling at_pointer, you need to consume the result: string values
@@ -593,6 +624,30 @@ public:
    *         - SCALAR_DOCUMENT_AS_VALUE if the json_pointer is empty and the document is not a scalar (see is_scalar() function).
    */
   simdjson_inline simdjson_result<value> at_pointer(std::string_view json_pointer) noexcept;
+
+  /**
+   * Get the value associated with the given JSONPath expression. We only support
+   * JSONPath queries that trivially convertible to JSON Pointer queries: key
+   * names and array indices.
+   *
+   * https://datatracker.ietf.org/doc/html/draft-normington-jsonpath-00
+   *
+   * Key values are matched exactly, without unescaping or Unicode normalization.
+   * We do a byte-by-byte comparison. E.g.
+   *
+   *   const padded_string json = "{\"\\u00E9\":123}"_padded;
+   *   auto doc = parser.iterate(json);
+   *   doc.at_path(".\\u00E9") == 123
+   *   doc.at_path((const char*)u8".\u00E9") returns an error (NO_SUCH_FIELD)
+   *
+   * @return The value associated with the given JSONPath expression, or:
+   *         - INVALID_JSON_POINTER if the JSONPath to JSON Pointer conversion fails
+   *         - NO_SUCH_FIELD if a field does not exist in an object
+   *         - INDEX_OUT_OF_BOUNDS if an array index is larger than an array length
+   *         - INCORRECT_TYPE if a non-integer is used to access an array
+   */
+  simdjson_inline simdjson_result<value> at_path(std::string_view json_path) noexcept;
+
   /**
    * Consumes the document and returns a string_view instance corresponding to the
    * document as represented in JSON. It points inside the original byte array containing
@@ -658,10 +713,12 @@ public:
   simdjson_inline simdjson_result<value> get_value() noexcept;
 
   simdjson_inline simdjson_result<bool> is_null() noexcept;
+  template<typename T> simdjson_inline simdjson_result<T> get() & noexcept;
   simdjson_inline simdjson_result<std::string_view> raw_json() noexcept;
   simdjson_inline operator document&() const noexcept;
-
 #if SIMDJSON_EXCEPTIONS
+  template <class T>
+  explicit simdjson_inline operator T() noexcept(false);
   simdjson_inline operator array() & noexcept(false);
   simdjson_inline operator object() & noexcept(false);
   simdjson_inline operator uint64_t() noexcept(false);
@@ -686,6 +743,7 @@ public:
 
   simdjson_inline simdjson_result<json_type> type() noexcept;
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
+  simdjson_inline simdjson_result<bool> is_string() noexcept;
 
   simdjson_inline simdjson_result<const char *> current_location() noexcept;
   simdjson_inline int32_t current_depth() const noexcept;
@@ -695,6 +753,8 @@ public:
   simdjson_inline simdjson_result<number> get_number() noexcept;
   simdjson_inline simdjson_result<std::string_view> raw_json_token() noexcept;
   simdjson_inline simdjson_result<value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<value> at_path(std::string_view json_path) noexcept;
+
 private:
   document *doc{nullptr};
 };
@@ -734,8 +794,9 @@ public:
 
   template<typename T> simdjson_inline error_code get(T &out) & noexcept;
   template<typename T> simdjson_inline error_code get(T &out) && noexcept;
-
 #if SIMDJSON_EXCEPTIONS
+  template <class T, typename std::enable_if<std::is_same<T, SIMDJSON_IMPLEMENTATION::ondemand::document>::value == false>::type>
+  explicit simdjson_inline operator T() noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::array() & noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::object() & noexcept(false);
   simdjson_inline operator uint64_t() noexcept(false);
@@ -759,6 +820,7 @@ public:
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> find_field_unordered(const char *key) & noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::json_type> type() noexcept;
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
+  simdjson_inline simdjson_result<bool> is_string() 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;
@@ -770,6 +832,7 @@ public:
   simdjson_inline simdjson_result<std::string_view> raw_json_token() noexcept;
 
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_path(std::string_view json_path) noexcept;
 };
 
 
@@ -802,8 +865,9 @@ public:
   simdjson_inline simdjson_result<bool> get_bool() noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> get_value() noexcept;
   simdjson_inline simdjson_result<bool> is_null() noexcept;
-
 #if SIMDJSON_EXCEPTIONS
+  template <class T, typename std::enable_if<std::is_same<T, SIMDJSON_IMPLEMENTATION::ondemand::document_reference>::value == false>::type>
+  explicit simdjson_inline operator T() noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::array() & noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::object() & noexcept(false);
   simdjson_inline operator uint64_t() noexcept(false);
@@ -827,6 +891,7 @@ public:
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> find_field_unordered(const char *key) & noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::json_type> type() noexcept;
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
+  simdjson_inline simdjson_result<bool> is_string() noexcept;
   simdjson_inline simdjson_result<const char *> current_location() noexcept;
   simdjson_inline simdjson_result<int32_t> current_depth() const noexcept;
   simdjson_inline simdjson_result<bool> is_negative() noexcept;
@@ -837,9 +902,10 @@ public:
   simdjson_inline simdjson_result<std::string_view> raw_json_token() noexcept;
 
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_path(std::string_view json_path) noexcept;
 };
 
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_H

include/simdjson/generic/ondemand/document_stream-inl.h

@@ -342,9 +342,18 @@ simdjson_inline std::string_view document_stream::iterator::source() const noexc
         depth--;
         break;
       default:    // Scalar value document
-        // TODO: Remove any trailing whitespaces
+        // TODO: We could remove trailing whitespaces
         // This returns a string spanning from start of value to the beginning of the next document (excluded)
-        return std::string_view(reinterpret_cast<const char*>(stream->buf) + current_index(), stream->parser->implementation->structural_indexes[++cur_struct_index] - current_index() - 1);
+        {
+          auto next_index = stream->parser->implementation->structural_indexes[++cur_struct_index];
+          // normally the length would be next_index - current_index() - 1, except for the last document
+          size_t svlen = next_index - current_index();
+          const char *start = reinterpret_cast<const char*>(stream->buf) + current_index();
+          while(svlen > 1 && (std::isspace(start[svlen-1]) || start[svlen-1] == '\0')) {
+            svlen--;
+          }
+          return std::string_view(start, svlen);
+        }
     }
     cur_struct_index++;
   }

include/simdjson/generic/ondemand/document_stream.h

@@ -122,10 +122,9 @@ public:
   class iterator {
   public:
     using value_type = simdjson_result<document>;
-    using reference  = value_type;
-
+    using reference  = simdjson_result<ondemand::document_reference>;
+    using pointer    = void;
     using difference_type   = std::ptrdiff_t;
-
     using iterator_category = std::input_iterator_tag;
 
     /**
@@ -135,7 +134,7 @@ public:
     /**
      * Get the current document (or error).
      */
-    simdjson_inline simdjson_result<ondemand::document_reference> operator*() noexcept;
+    simdjson_inline reference operator*() noexcept;
     /**
      * Advance to the next document (prefix).
      */
@@ -335,4 +334,4 @@ public:
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_STREAM_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_DOCUMENT_STREAM_H

include/simdjson/generic/ondemand/field-inl.h

@@ -12,7 +12,7 @@ namespace simdjson {
 namespace SIMDJSON_IMPLEMENTATION {
 namespace ondemand {
 
-// clang 6 doesn't think the default constructor can be noexcept, so we make it explicit
+// clang 6 does not think the default constructor can be noexcept, so we make it explicit
 simdjson_inline field::field() noexcept : std::pair<raw_json_string, ondemand::value>() {}
 
 simdjson_inline field::field(raw_json_string key, ondemand::value &&value) noexcept
@@ -43,6 +43,19 @@ simdjson_inline raw_json_string field::key() const noexcept {
   return first;
 }
 
+
+simdjson_inline std::string_view field::key_raw_json_token() const noexcept {
+  SIMDJSON_ASSUME(first.buf != nullptr); // We would like to call .alive() by Visual Studio won't let us.
+  return std::string_view(reinterpret_cast<const char*>(first.buf-1), second.iter._json_iter->token.peek(-1) - first.buf + 1);
+}
+
+simdjson_inline std::string_view field::escaped_key() const noexcept {
+  SIMDJSON_ASSUME(first.buf != nullptr); // We would like to call .alive() by Visual Studio won't let us.
+  auto end_quote = second.iter._json_iter->token.peek(-1);
+  while(*end_quote != '"') end_quote--;
+  return std::string_view(reinterpret_cast<const char*>(first.buf), end_quote - first.buf);
+}
+
 simdjson_inline value &field::value() & noexcept {
   return second;
 }
@@ -76,10 +89,22 @@ 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>::key_raw_json_token() noexcept {
+  if (error()) { return error(); }
+  return first.key_raw_json_token();
+}
+
+simdjson_inline simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::field>::escaped_key() noexcept {
+  if (error()) { return error(); }
+  return first.escaped_key();
+}
+
 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(allow_replacement);
 }
+
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::field>::value() noexcept {
   if (error()) { return error(); }
   return std::move(first.value());

include/simdjson/generic/ondemand/field.h

@@ -42,6 +42,17 @@ public:
    * an unescaped C string: e.g., key() == "test".
    */
   simdjson_inline raw_json_string key() const noexcept;
+  /**
+   * Get the unprocessed key as a string_view. This includes the quotes and may include
+   * some spaces after the last quote.
+   */
+  simdjson_inline std::string_view key_raw_json_token() const noexcept;
+  /**
+   * Get the key as a string_view. This does not include the quotes and
+   * the string is unprocessed key so it may contain escape characters
+   * (e.g., \uXXXX or \n). Use unescaped_key() to get the unescaped key.
+   */
+  simdjson_inline std::string_view escaped_key() const noexcept;
   /**
    * Get the field value.
    */
@@ -74,6 +85,8 @@ public:
 
   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<std::string_view> key_raw_json_token() noexcept;
+  simdjson_inline simdjson_result<std::string_view> escaped_key() noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> value() noexcept;
 };
 

include/simdjson/generic/ondemand/json_iterator-inl.h

@@ -54,6 +54,23 @@ simdjson_inline json_iterator::json_iterator(const uint8_t *buf, ondemand::parse
 #endif
 }
 
+#ifdef SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+simdjson_inline json_iterator::json_iterator(const uint8_t *buf, ondemand::parser *_parser, bool streaming) noexcept
+    : token(buf, &_parser->implementation->structural_indexes[0]),
+      parser{_parser},
+      _string_buf_loc{parser->string_buf.get()},
+      _depth{1},
+      _root{parser->implementation->structural_indexes.get()},
+      _streaming{streaming}
+
+{
+  logger::log_headers();
+#if SIMDJSON_CHECK_EOF
+  assert_more_tokens();
+#endif
+}
+#endif // SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+
 inline void json_iterator::rewind() noexcept {
   token.set_position( root_position() );
   logger::log_headers(); // We start again
@@ -286,6 +303,12 @@ simdjson_inline uint32_t json_iterator::peek_length(token_position position) con
 #endif // SIMDJSON_CHECK_EOF
   return token.peek_length(position);
 }
+simdjson_inline uint32_t json_iterator::peek_root_length(token_position position) const noexcept {
+#if SIMDJSON_CHECK_EOF
+  assert_valid_position(position);
+#endif // SIMDJSON_CHECK_EOF
+  return token.peek_root_length(position);
+}
 
 simdjson_inline token_position json_iterator::last_position() const noexcept {
   // The following line fails under some compilers...

include/simdjson/generic/ondemand/json_iterator.h

@@ -146,7 +146,7 @@ public:
    * @param delta The relative position of the token to retrieve. e.g. 0 = next token, -1 = prev token.
    *
    * TODO consider a string_view, assuming the length will get stripped out by the optimizer when
-   * it isn't used ...
+   * it is not used ...
    */
   simdjson_inline const uint8_t *peek(int32_t delta=0) const noexcept;
   /**
@@ -174,7 +174,7 @@ public:
    * @param position The position of the token to retrieve.
    *
    * TODO consider a string_view, assuming the length will get stripped out by the optimizer when
-   * it isn't used ...
+   * it is not used ...
    */
   simdjson_inline const uint8_t *peek(token_position position) const noexcept;
   /**
@@ -185,13 +185,21 @@ public:
    * @param position The position of the token to retrieve.
    */
   simdjson_inline uint32_t peek_length(token_position position) const noexcept;
+  /**
+   * Get the maximum length of the JSON text for the current root token.
+   *
+   * The length will include any whitespace at the end of the token.
+   *
+   * @param position The position of the token to retrieve.
+   */
+  simdjson_inline uint32_t peek_root_length(token_position position) const noexcept;
   /**
    * Get the JSON text for the last token in the document.
    *
    * This is not null-terminated; it is a view into the JSON.
    *
    * TODO consider a string_view, assuming the length will get stripped out by the optimizer when
-   * it isn't used ...
+   * it is not used ...
    */
   simdjson_inline const uint8_t *peek_last() const noexcept;
 
@@ -285,6 +293,9 @@ public:
   inline bool balanced() const noexcept;
 protected:
   simdjson_inline json_iterator(const uint8_t *buf, ondemand::parser *parser) noexcept;
+#ifdef SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+  simdjson_inline json_iterator(const uint8_t *buf, ondemand::parser *parser, bool streaming) noexcept;
+#endif // SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
   /// The last token before the end
   simdjson_inline token_position last_position() const noexcept;
   /// The token *at* the end. This points at gibberish and should only be used for comparison.
@@ -300,6 +311,7 @@ protected:
   friend class raw_json_string;
   friend class parser;
   friend class value_iterator;
+  friend class field;
   template <typename... Args>
   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, Args&&... args) noexcept;
   template <typename... Args>

include/simdjson/generic/ondemand/json_path_to_pointer_conversion-inl.h

@@ -0,0 +1,67 @@
+#pragma once
+
+#ifndef SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H
+#define SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H
+
+#ifndef SIMDJSON_CONDITIONAL_INCLUDE
+#define SIMDJSON_GENERIC_ONDEMAND_JSON_PATH_TO_POINTER_CONVERSION_INL_H
+#include "simdjson/generic/ondemand/json_path_to_pointer_conversion.h"
+#endif // SIMDJSON_CONDITIONAL_INCLUDE
+
+namespace simdjson {
+namespace SIMDJSON_IMPLEMENTATION {}
+namespace ondemand {
+
+simdjson_inline std::string json_path_to_pointer_conversion(std::string_view json_path) {
+  if (json_path.empty() || (json_path.front() != '.' && json_path.front() != '[') {
+    return "-1"; // Sentinel value to be handled as an error by the caller.
+  }
+
+  std::string result;
+  // Reserve space to reduce allocations, adjusting for potential increases due
+  // to escaping.
+  result.reserve(json_path.size() * 2);
+
+  // Skip the initial '.' as it's assumed every path starts with it.
+  size_t i = 0;
+
+  while (i < json_path.length()) {
+    if (json_path[i] == '.') {
+      result += '/';
+    } else if (json_path[i] == '[') {
+      result += '/';
+      ++i; // Move past the '['
+      while (i < json_path.length() && json_path[i] != ']') {
+        if (json_path[i] == '~') {
+          result += "~0";
+        } else if (json_path[i] == '/') {
+          result += "~1";
+        } else {
+          result += json_path[i];
+        }
+        ++i;
+      }
+      if (i == json_path.length() || json_path[i] != ']') {
+        return "-1"; // Returning sentinel value that will be handled as an error by the caller
+      }
+    } else {
+      if (json_path[i] == '~') {
+        result += "~0";
+      } else if (json_path[i] == '/') {
+        result += "~1";
+      } else {
+        result += json_path[i];
+      }
+    }
+    ++i;
+  }
+
+  return simdjson_result<std::string>(result);
+}
+
+
+} // namespace ondemand
+} // namespace SIMDJSON_IMPLEMENTATION
+} // namespace simdjson
+
+#endif // SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H

include/simdjson/generic/ondemand/json_path_to_pointer_conversion.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#ifndef SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_H
+#define SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_H
+
+namespace simdjson {
+namespace SIMDJSON_IMPLEMENTATION {
+namespace internal {
+
+/**
+ * Converts JSONPath to JSON Pointer.
+ * @param json_path The JSONPath string to be converted.
+ * @return A string containing the equivalent JSON Pointer.
+ * @throws simdjson_error If the conversion fails.
+ */
+simdjson_inline std::string json_path_to_pointer_conversion(std::string_view json_path);
+
+} // namespace internal
+} // namespace SIMDJSON_IMPLEMENTATION
+} // namespace simdjson
+
+#endif // SIMDJSON_JSON_PATH_TO_POINTER_CONVERSION_H

include/simdjson/generic/ondemand/json_type-inl.h

@@ -48,7 +48,6 @@ simdjson_inline number::operator uint64_t() const noexcept {
   return get_uint64();
 }
 
-
 simdjson_inline bool number::is_int64() const noexcept {
   return get_number_type() == number_type::signed_integer;
 }

include/simdjson/generic/ondemand/object-inl.h

@@ -164,6 +164,14 @@ inline simdjson_result<value> object::at_pointer(std::string_view json_pointer)
   return child;
 }
 
+inline simdjson_result<value> object::at_path(std::string_view json_path) noexcept {
+  auto json_pointer = json_path_to_pointer_conversion(json_path);
+  if (json_pointer == "-1") {
+    return INVALID_JSON_POINTER;
+  }
+  return at_pointer(json_pointer);
+}
+
 simdjson_inline simdjson_result<size_t> object::count_fields() & noexcept {
   size_t count{0};
   // Important: we do not consume any of the values.
@@ -236,6 +244,14 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjs
   return first.at_pointer(json_pointer);
 }
 
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::at_path(
+    std::string_view json_path) noexcept {
+  if (error()) {
+    return error();
+  }
+  return first.at_path(json_path);
+}
+
 inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::reset() noexcept {
   if (error()) { return error(); }
   return first.reset();
@@ -257,4 +273,4 @@ simdjson_inline  simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPL
 }
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_OBJECT_INL_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_OBJECT_INL_H

include/simdjson/generic/ondemand/object.h

@@ -56,6 +56,8 @@ public:
    * key a single time. Doing object["mykey"].to_string() and then again object["mykey"].to_string()
    * is an error.
    *
+   * If you expect to have keys with escape characters, please review our documentation.
+   *
    * @param key The key to look up.
    * @returns The value of the field, or NO_SUCH_FIELD if the field is not in the object.
    */
@@ -77,7 +79,7 @@ public:
    * APIs assume this. Therefore, you must be explicit if you want to treat objects as out of order.
    *
    * Use find_field() if you are sure fields will be in order (or are willing to treat it as if the
-   * field wasn't there when they aren't).
+   * field was not there when they are not in order).
    *
    * If you have multiple fields with a matching key ({"x": 1,  "x": 1}) be mindful
    * that only one field is returned.
@@ -93,6 +95,8 @@ public:
    * You are expected to access keys only once. You should access the value corresponding to a key
    * a single time. Doing object["mykey"].to_string() and then again object["mykey"].to_string() is an error.
    *
+   * If you expect to have keys with escape characters, please review our documentation.
+   *
    * @param key The key to look up.
    * @returns The value of the field, or NO_SUCH_FIELD if the field is not in the object.
    */
@@ -140,6 +144,19 @@ public:
    */
   inline simdjson_result<value> at_pointer(std::string_view json_pointer) noexcept;
 
+  /**
+   * Get the value associated with the given JSONPath expression. We only support
+   * JSONPath queries that trivially convertible to JSON Pointer queries: key
+   * names and array indices.
+   *
+   * @return The value associated with the given JSONPath expression, or:
+   *         - INVALID_JSON_POINTER if the JSONPath to JSON Pointer conversion fails
+   *         - NO_SUCH_FIELD if a field does not exist in an object
+   *         - INDEX_OUT_OF_BOUNDS if an array index is larger than an array length
+   *         - INCORRECT_TYPE if a non-integer is used to access an array
+   */
+  inline simdjson_result<value> at_path(std::string_view json_path) noexcept;
+
   /**
    * Reset the iterator so that we are pointing back at the
    * beginning of the object. You should still consume values only once even if you
@@ -227,6 +244,8 @@ public:
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> operator[](std::string_view key) & noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> operator[](std::string_view key) && noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_path(std::string_view json_path) noexcept;
+
   inline simdjson_result<bool> reset() noexcept;
   inline simdjson_result<bool> is_empty() noexcept;
   inline simdjson_result<size_t> count_fields() & noexcept;
@@ -236,4 +255,4 @@ public:
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_OBJECT_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_OBJECT_H

include/simdjson/generic/ondemand/parser-inl.h

@@ -58,6 +58,27 @@ simdjson_warn_unused simdjson_inline simdjson_result<document> parser::iterate(p
   return document::start({ reinterpret_cast<const uint8_t *>(json.data()), this });
 }
 
+#ifdef SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+simdjson_warn_unused simdjson_inline simdjson_result<document> parser::iterate_allow_incomplete_json(padded_string_view json) & noexcept {
+  if (json.padding() < SIMDJSON_PADDING) { return INSUFFICIENT_PADDING; }
+
+  json.remove_utf8_bom();
+
+  // Allocate if needed
+  if (capacity() < json.length() || !string_buf) {
+    SIMDJSON_TRY( allocate(json.length(), max_depth()) );
+  }
+
+  // Run stage 1.
+  const simdjson::error_code err = implementation->stage1(reinterpret_cast<const uint8_t *>(json.data()), json.length(), stage1_mode::regular);
+  if (err) {
+    if (err != UNCLOSED_STRING)
+      return err;
+  }
+  return document::start({ reinterpret_cast<const uint8_t *>(json.data()), this, true });
+}
+#endif // SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+
 simdjson_warn_unused simdjson_inline simdjson_result<document> parser::iterate(const char *json, size_t len, size_t allocated) & noexcept {
   return iterate(padded_string_view(json, len, allocated));
 }
@@ -129,13 +150,13 @@ inline simdjson_result<document_stream> parser::iterate_many(const padded_string
   return iterate_many(s.data(), s.length(), batch_size, allow_comma_separated);
 }
 
-simdjson_inline size_t parser::capacity() const noexcept {
+simdjson_pure simdjson_inline size_t parser::capacity() const noexcept {
   return _capacity;
 }
-simdjson_inline size_t parser::max_capacity() const noexcept {
+simdjson_pure simdjson_inline size_t parser::max_capacity() const noexcept {
   return _max_capacity;
 }
-simdjson_inline size_t parser::max_depth() const noexcept {
+simdjson_pure simdjson_inline size_t parser::max_depth() const noexcept {
   return _max_depth;
 }
 

include/simdjson/generic/ondemand/parser.h

@@ -98,6 +98,9 @@ public:
    *         - UNCLOSED_STRING if there is an unclosed string in the document.
    */
   simdjson_warn_unused simdjson_result<document> iterate(padded_string_view json) & noexcept;
+#ifdef SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
+  simdjson_warn_unused simdjson_result<document> iterate_allow_incomplete_json(padded_string_view json) & noexcept;
+#endif // SIMDJSON_EXPERIMENTAL_ALLOW_INCOMPLETE_JSON
   /** @overload simdjson_result<document> iterate(padded_string_view json) & noexcept */
   simdjson_warn_unused simdjson_result<document> iterate(const char *json, size_t len, size_t capacity) & noexcept;
   /** @overload simdjson_result<document> iterate(padded_string_view json) & noexcept */
@@ -242,9 +245,9 @@ public:
   simdjson_result<document_stream> iterate_many(const char *buf, size_t batch_size = DEFAULT_BATCH_SIZE) noexcept = delete;
 
   /** The capacity of this parser (the largest document it can process). */
-  simdjson_inline size_t capacity() const noexcept;
+  simdjson_pure simdjson_inline size_t capacity() const noexcept;
   /** The maximum capacity of this parser (the largest document it is allowed to process). */
-  simdjson_inline size_t max_capacity() const noexcept;
+  simdjson_pure simdjson_inline size_t max_capacity() const noexcept;
   simdjson_inline void set_max_capacity(size_t max_capacity) noexcept;
   /**
    * The maximum depth of this parser (the most deeply nested objects and arrays it can process).
@@ -252,7 +255,7 @@ public:
    * The document's instance current_depth() method should be used to monitor the parsing
    * depth and limit it if desired.
    */
-  simdjson_inline size_t max_depth() const noexcept;
+  simdjson_pure simdjson_inline size_t max_depth() const noexcept;
 
   /**
    * Ensure this parser has enough memory to process JSON documents up to `capacity` bytes in length

include/simdjson/generic/ondemand/token_iterator-inl.h

@@ -37,6 +37,11 @@ simdjson_inline uint32_t token_iterator::peek_length(token_position position) co
   return *(position+1) - *position;
 }
 
+simdjson_inline uint32_t token_iterator::peek_root_length(token_position position) const noexcept {
+  return *(position+2) - *(position) > *(position+1) - *(position) ?
+      *(position+1) - *(position)
+      : *(position+2) - *(position);
+}
 simdjson_inline const uint8_t *token_iterator::peek(int32_t delta) const noexcept {
   return &buf[*(_position+delta)];
 }

include/simdjson/generic/ondemand/token_iterator.h

@@ -47,7 +47,7 @@ public:
    *              1 = next token, -1 = prev token.
    *
    * TODO consider a string_view, assuming the length will get stripped out by the optimizer when
-   * it isn't used ...
+   * it is not used...
    */
   simdjson_inline const uint8_t *peek(int32_t delta=0) const noexcept;
   /**
@@ -77,7 +77,14 @@ public:
    * @param position The position of the token.
    */
   simdjson_inline uint32_t peek_length(token_position position) const noexcept;
-
+  /**
+   * Get the maximum length of the JSON text for a root token.
+   *
+   * The length will include any whitespace at the end of the token.
+   *
+   * @param position The position of the token (start of the document).
+   */
+  simdjson_inline uint32_t peek_root_length(token_position position) const noexcept;
   /**
    * Return the current index.
    */

include/simdjson/generic/ondemand/value-inl.h

@@ -6,6 +6,8 @@
 #include "simdjson/generic/ondemand/array.h"
 #include "simdjson/generic/ondemand/array_iterator.h"
 #include "simdjson/generic/ondemand/json_iterator.h"
+#include "simdjson/generic/ondemand/json_path_to_pointer_conversion.h"
+#include "simdjson/generic/ondemand/json_path_to_pointer_conversion-inl.h"
 #include "simdjson/generic/ondemand/json_type.h"
 #include "simdjson/generic/ondemand/object.h"
 #include "simdjson/generic/ondemand/raw_json_string.h"
@@ -93,6 +95,10 @@ template<typename T> simdjson_inline error_code value::get(T &out) noexcept {
 }
 
 #if SIMDJSON_EXCEPTIONS
+template <class T>
+simdjson_inline value::operator T() noexcept(false) {
+  return get<T>();
+}
 simdjson_inline value::operator array() noexcept(false) {
   return get_array();
 }
@@ -179,6 +185,14 @@ simdjson_inline simdjson_result<bool> value::is_scalar() noexcept {
   return ! ((this_type == json_type::array) || (this_type == json_type::object));
 }
 
+simdjson_inline simdjson_result<bool> value::is_string() noexcept {
+  json_type this_type;
+  auto error = type().get(this_type);
+  if(error) { return error; }
+  return (this_type == json_type::string);
+}
+
+
 simdjson_inline bool value::is_negative() noexcept {
   return iter.is_negative();
 }
@@ -225,6 +239,26 @@ simdjson_inline int32_t value::current_depth() const noexcept{
   return iter.json_iter().depth();
 }
 
+inline bool is_pointer_well_formed(std::string_view json_pointer) noexcept {
+  if (simdjson_unlikely(json_pointer.empty())) { // can't be
+    return false;
+  }
+  if (simdjson_unlikely(json_pointer[0] != '/')) {
+    return false;
+  }
+  size_t escape = json_pointer.find('~');
+  if (escape == std::string_view::npos) {
+    return true;
+  }
+  if (escape == json_pointer.size() - 1) {
+    return false;
+  }
+  if (json_pointer[escape + 1] != '0' && json_pointer[escape + 1] != '1') {
+    return false;
+  }
+  return true;
+}
+
 simdjson_inline simdjson_result<value> value::at_pointer(std::string_view json_pointer) noexcept {
   json_type t;
   SIMDJSON_TRY(type().get(t));
@@ -235,6 +269,23 @@ simdjson_inline simdjson_result<value> value::at_pointer(std::string_view json_p
     case json_type::object:
       return (*this).get_object().at_pointer(json_pointer);
     default:
+      // a non-empty string can be invalid, or accessing a primitive (issue 2154)
+      if (is_pointer_well_formed(json_pointer)) {
+        return NO_SUCH_FIELD;
+      }
+      return INVALID_JSON_POINTER;
+  }
+}
+
+simdjson_inline simdjson_result<value> value::at_path(std::string_view json_path) noexcept {
+  json_type t;
+  SIMDJSON_TRY(type().get(t));
+  switch (t) {
+  case json_type::array:
+      return (*this).get_array().at_path(json_path);
+  case json_type::object:
+      return (*this).get_object().at_path(json_path);
+  default:
       return INVALID_JSON_POINTER;
   }
 }
@@ -392,6 +443,10 @@ simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::o
   if (error()) { return error(); }
   return first.is_scalar();
 }
+simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::is_string() noexcept {
+  if (error()) { return error(); }
+  return first.is_string();
+}
 simdjson_inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::is_negative() noexcept {
   if (error()) { return error(); }
   return first.is_negative();
@@ -409,6 +464,11 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::number> simdj
   return first.get_number();
 }
 #if SIMDJSON_EXCEPTIONS
+template <class T>
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::operator T() noexcept(false) {
+  if (error()) { throw simdjson_error(error()); }
+  return static_cast<T>(first);
+}
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::operator SIMDJSON_IMPLEMENTATION::ondemand::array() noexcept(false) {
   if (error()) { throw simdjson_error(error()); }
   return first;
@@ -463,11 +523,22 @@ simdjson_inline simdjson_result<int32_t> simdjson_result<SIMDJSON_IMPLEMENTATION
   return first.current_depth();
 }
 
-simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::at_pointer(std::string_view json_pointer) noexcept {
-  if (error()) { return error(); }
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::at_pointer(
+    std::string_view json_pointer) noexcept {
+  if (error()) {
+      return error();
+  }
   return first.at_pointer(json_pointer);
 }
 
+simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value>::at_path(
+      std::string_view json_path) noexcept {
+  if (error()) {
+    return error();
+  }
+  return first.at_path(json_path);
+}
+
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_VALUE_INL_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_VALUE_INL_H

include/simdjson/generic/ondemand/value.h

@@ -36,12 +36,13 @@ public:
    * @returns INCORRECT_TYPE If the JSON value is not the given type.
    */
   template<typename T> simdjson_inline simdjson_result<T> get() noexcept {
-    // Unless the simdjson library provides an inline implementation, calling this method should
+    // Unless the simdjson library or the user provides an inline implementation, calling this method should
     // immediately fail.
     static_assert(!sizeof(T), "The get method with given type is not implemented by the simdjson library. "
       "The supported types are ondemand::object, ondemand::array, raw_json_string, std::string_view, uint64_t, "
       "int64_t, double, and bool. We recommend you use get_double(), get_bool(), get_uint64(), get_int64(), "
-      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template.");
+      " get_object(), get_array(), get_raw_json_string(), or get_string() instead of the get template."
+      " You may also add support for custom types, see our documentation.");
   }
 
   /**
@@ -194,6 +195,17 @@ public:
   simdjson_inline simdjson_result<bool> is_null() noexcept;
 
 #if SIMDJSON_EXCEPTIONS
+  /**
+   * Cast this JSON value to an instance of type T. The programmer is responsible for
+   * providing an implementation of get<T> for the type T, if T is not one of the types
+   * supported by the library (object, array, raw_json_string, string_view, uint64_t, etc.).
+   *
+   * See https://github.com/simdjson/simdjson/blob/master/doc/basics.md#adding-support-for-custom-types
+   *
+   * @returns An instance of type T
+   */
+  template <class T>
+  explicit simdjson_inline operator T() noexcept(false);
   /**
    * Cast this JSON value to an array.
    *
@@ -357,7 +369,7 @@ public:
    * that only one field is returned.
    *
    * Use find_field() if you are sure fields will be in order (or are willing to treat it as if the
-   * field wasn't there when they aren't).
+   * field as not there when they are not in order).
    *
    * @param key The key to look up.
    * @returns The value of the field, or NO_SUCH_FIELD if the field is not in the object.
@@ -393,6 +405,13 @@ public:
    * @error TAPE_ERROR when the JSON value is a bad token like "}" "," or "alse".
    */
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
+  /**
+   * Checks whether the value is a string.
+   *
+   * @returns true if the type is string
+   * @error TAPE_ERROR when the JSON value is a bad token like "}" "," or "alse".
+   */
+  simdjson_inline simdjson_result<bool> is_string() noexcept;
 
   /**
    * Checks whether the value is a negative number.
@@ -425,10 +444,12 @@ public:
    * get_number().get_number_type().
    *
    * get_number_type() is number_type::unsigned_integer if we have
-   * an integer greater or equal to 9223372036854775808
+   * an integer greater or equal to 9223372036854775808.
    * get_number_type() is number_type::signed_integer if we have an
-   * integer that is less than 9223372036854775808
-   * Otherwise, get_number_type() has value number_type::floating_point_number
+   * integer that is less than 9223372036854775808.
+   * get_number_type() is number_type::big_integer for integers that do not fit in 64 bits,
+   * in which case the digit_count is set to the length of the big integer string.
+   * Otherwise, get_number_type() has value number_type::floating_point_number.
    *
    * This function requires processing the number string, but it is expected
    * to be faster than get_number().get_number_type() because it is does not
@@ -455,6 +476,8 @@ public:
    * You can recover the value by calling number.get_uint64() and you
    * have that number.is_uint64() is true.
    *
+   * For integers that do not fit in 64 bits, the function returns BIGINT_ERROR error code.
+   *
    * Otherwise, number.get_number_type() has value number_type::floating_point_number
    * and we have a binary64 number.
    * You can recover the value by calling number.get_double() and you
@@ -470,7 +493,6 @@ public:
    */
   simdjson_warn_unused simdjson_inline simdjson_result<number> get_number() noexcept;
 
-
   /**
    * Get the raw JSON for this token.
    *
@@ -568,6 +590,20 @@ public:
    */
   simdjson_inline simdjson_result<value> at_pointer(std::string_view json_pointer) noexcept;
 
+  /**
+   * Get the value associated with the given JSONPath expression. We only support
+   * JSONPath queries that trivially convertible to JSON Pointer queries: key
+   * names and array indices.
+   *
+   * @return The value associated with the given JSONPath expression, or:
+   *         - INVALID_JSON_POINTER if the JSONPath to JSON Pointer conversion fails
+   *         - NO_SUCH_FIELD if a field does not exist in an object
+   *         - INDEX_OUT_OF_BOUNDS if an array index is larger than an array length
+   *         - INCORRECT_TYPE if a non-integer is used to access an array
+   */
+  simdjson_inline simdjson_result<value> at_path(std::string_view at_path) noexcept;
+
+
 protected:
   /**
    * Create a value.
@@ -607,6 +643,7 @@ protected:
   friend class object;
   friend struct simdjson_result<value>;
   friend struct simdjson_result<field>;
+  friend class field;
 };
 
 } // namespace ondemand
@@ -644,6 +681,8 @@ public:
   template<typename T> simdjson_inline error_code get(T &out) noexcept;
 
 #if SIMDJSON_EXCEPTIONS
+  template <class T>
+  explicit simdjson_inline operator T() noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::array() noexcept(false);
   simdjson_inline operator SIMDJSON_IMPLEMENTATION::ondemand::object() noexcept(false);
   simdjson_inline operator uint64_t() noexcept(false);
@@ -697,7 +736,7 @@ public:
    * APIs assume this. Therefore, you must be explicit if you want to treat objects as out of order.
    *
    * Use find_field() if you are sure fields will be in order (or are willing to treat it as if the
-   * field wasn't there when they aren't).
+   * field as not there when they are not in order).
    *
    * @param key The key to look up.
    * @returns The value of the field, or NO_SUCH_FIELD if the field is not in the object.
@@ -719,6 +758,7 @@ public:
    */
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::json_type> type() noexcept;
   simdjson_inline simdjson_result<bool> is_scalar() noexcept;
+  simdjson_inline simdjson_result<bool> is_string() noexcept;
   simdjson_inline simdjson_result<bool> is_negative() noexcept;
   simdjson_inline simdjson_result<bool> is_integer() noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::number_type> get_number_type() noexcept;
@@ -733,8 +773,9 @@ public:
   /** @copydoc simdjson_inline int32_t current_depth() const noexcept */
   simdjson_inline simdjson_result<int32_t> current_depth() const noexcept;
   simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_pointer(std::string_view json_pointer) noexcept;
+  simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> at_path(std::string_view json_path) noexcept;
 };
 
 } // namespace simdjson
 
-#endif // SIMDJSON_GENERIC_ONDEMAND_VALUE_H
+#endif // SIMDJSON_GENERIC_ONDEMAND_VALUE_H

include/simdjson/generic/ondemand/value_iterator-inl.h

@@ -137,7 +137,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::find_
   } else if (!is_open()) {
 #if SIMDJSON_DEVELOPMENT_CHECKS
     // If we're past the end of the object, we're being iterated out of order.
-    // Note: this isn't perfect detection. It's possible the user is inside some other object; if so,
+    // Note: this is not perfect detection. It's possible the user is inside some other object; if so,
     // this object iterator will blithely scan that object for fields.
     if (_json_iter->depth() < depth() - 1) { return OUT_OF_ORDER_ITERATION; }
 #endif
@@ -249,7 +249,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::find_
 
 #if SIMDJSON_DEVELOPMENT_CHECKS
     // If we're past the end of the object, we're being iterated out of order.
-    // Note: this isn't perfect detection. It's possible the user is inside some other object; if so,
+    // Note: this is not perfect detection. It's possible the user is inside some other object; if so,
     // this object iterator will blithely scan that object for fields.
     if (_json_iter->depth() < depth() - 1) { return OUT_OF_ORDER_ITERATION; }
 #endif
@@ -591,7 +591,7 @@ simdjson_inline simdjson_result<number> value_iterator::get_number() noexcept {
 }
 
 simdjson_inline simdjson_result<bool> value_iterator::is_root_integer(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("is_root_integer");
   uint8_t tmpbuf[20+1+1]{}; // <20 digits> is the longest possible unsigned integer
   tmpbuf[20+1] = '\0'; // make sure that buffer is always null terminated.
@@ -607,7 +607,7 @@ simdjson_inline simdjson_result<bool> value_iterator::is_root_integer(bool check
 }
 
 simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::number_type> value_iterator::get_root_number_type(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("number");
   // Per https://www.exploringbinary.com/maximum-number-of-decimal-digits-in-binary-floating-point-numbers/,
   // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
@@ -615,7 +615,12 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::number_type> value_iter
   uint8_t tmpbuf[1074+8+1+1];
   tmpbuf[1074+8+1] = '\0'; // make sure that buffer is always null terminated.
   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");
+    if(numberparsing::check_if_integer(json, max_len)) {
+      if (check_trailing && !_json_iter->is_single_token()) { return TRAILING_CONTENT; }
+      logger::log_error(*_json_iter, start_position(), depth(), "Found big integer");
+      return number_type::big_integer;
+    }
+    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters and not a big integer");
     return NUMBER_ERROR;
   }
   auto answer = numberparsing::get_number_type(tmpbuf);
@@ -623,15 +628,21 @@ simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::number_type> value_iter
   return answer;
 }
 simdjson_inline simdjson_result<number> value_iterator::get_root_number(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("number");
   // Per https://www.exploringbinary.com/maximum-number-of-decimal-digits-in-binary-floating-point-numbers/,
   // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
   // number: -0.<fraction>e-308.
+  // NOTE: the current approach doesn't work for very big integer numbers containing more than 1074 digits.
   uint8_t tmpbuf[1074+8+1+1];
   tmpbuf[1074+8+1] = '\0'; // make sure that buffer is always null terminated.
   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");
+    if(numberparsing::check_if_integer(json, max_len)) {
+      if (check_trailing && !_json_iter->is_single_token()) { return TRAILING_CONTENT; }
+      logger::log_error(*_json_iter, start_position(), depth(), "Found big integer");
+      return BIGINT_ERROR;
+    }
+    logger::log_error(*_json_iter, start_position(), depth(), "Root number more than 1082 characters and not a big integer");
     return NUMBER_ERROR;
   }
   number num;
@@ -663,7 +674,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<raw_json_string> value_iter
   return raw_json_string(json+1);
 }
 simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::get_root_uint64(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("uint64");
   uint8_t tmpbuf[20+1+1]{}; // <20 digits> is the longest possible unsigned integer
   tmpbuf[20+1] = '\0'; // make sure that buffer is always null terminated.
@@ -679,7 +690,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::g
   return result;
 }
 simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::get_root_uint64_in_string(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("uint64");
   uint8_t tmpbuf[20+1+1]{}; // <20 digits> is the longest possible unsigned integer
   tmpbuf[20+1] = '\0'; // make sure that buffer is always null terminated.
@@ -695,7 +706,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<uint64_t> value_iterator::g
   return result;
 }
 simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::get_root_int64(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("int64");
   uint8_t tmpbuf[20+1+1]; // -<19 digits> is the longest possible integer
   tmpbuf[20+1] = '\0'; // make sure that buffer is always null terminated.
@@ -712,7 +723,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::ge
   return result;
 }
 simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::get_root_int64_in_string(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("int64");
   uint8_t tmpbuf[20+1+1]; // -<19 digits> is the longest possible integer
   tmpbuf[20+1] = '\0'; // make sure that buffer is always null terminated.
@@ -729,7 +740,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<int64_t> value_iterator::ge
   return result;
 }
 simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get_root_double(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("double");
   // Per https://www.exploringbinary.com/maximum-number-of-decimal-digits-in-binary-floating-point-numbers/,
   // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
@@ -749,7 +760,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get
 }
 
 simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get_root_double_in_string(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("double");
   // Per https://www.exploringbinary.com/maximum-number-of-decimal-digits-in-binary-floating-point-numbers/,
   // 1074 is the maximum number of significant fractional digits. Add 8 more digits for the biggest
@@ -768,7 +779,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<double> value_iterator::get
   return result;
 }
 simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::get_root_bool(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("bool");
   uint8_t tmpbuf[5+1+1]; // +1 for null termination
   tmpbuf[5+1] = '\0'; // make sure that buffer is always null terminated.
@@ -781,7 +792,7 @@ simdjson_warn_unused simdjson_inline simdjson_result<bool> value_iterator::get_r
   return result;
 }
 simdjson_inline simdjson_result<bool> value_iterator::is_root_null(bool check_trailing) noexcept {
-  auto max_len = peek_start_length();
+  auto max_len = peek_root_length();
   auto json = peek_root_scalar("null");
   bool result = (max_len >= 4 && !atomparsing::str4ncmp(json, "null") &&
          (max_len == 4 || jsoncharutils::is_structural_or_whitespace(json[4])));
@@ -853,6 +864,9 @@ simdjson_inline const uint8_t *value_iterator::peek_start() const noexcept {
 simdjson_inline uint32_t value_iterator::peek_start_length() const noexcept {
   return _json_iter->peek_length(start_position());
 }
+simdjson_inline uint32_t value_iterator::peek_root_length() const noexcept {
+  return _json_iter->peek_root_length(start_position());
+}
 
 simdjson_inline const uint8_t *value_iterator::peek_scalar(const char *type) noexcept {
   logger::log_value(*_json_iter, start_position(), depth(), type);

include/simdjson/generic/ondemand/value_iterator.h

@@ -375,6 +375,7 @@ protected:
   simdjson_inline simdjson_result<bool> parse_bool(const uint8_t *json) const noexcept;
   simdjson_inline const uint8_t *peek_start() const noexcept;
   simdjson_inline uint32_t peek_start_length() const noexcept;
+  simdjson_inline uint32_t peek_root_length() const noexcept;
 
   /**
    * The general idea of the advance_... methods and the peek_* methods
@@ -469,6 +470,7 @@ protected:
   friend class object;
   friend class array;
   friend class value;
+  friend class field;
 }; // value_iterator
 
 } // namespace ondemand

include/simdjson/haswell/numberparsing_defs.h

@@ -37,13 +37,13 @@ static simdjson_inline uint32_t parse_eight_digits_unrolled(const uint8_t *chars
 simdjson_inline internal::value128 full_multiplication(uint64_t value1, uint64_t value2) {
   internal::value128 answer;
 #if SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
-#ifdef _M_ARM64
+#if SIMDJSON_IS_ARM64
   // ARM64 has native support for 64-bit multiplications, no need to emultate
   answer.high = __umulh(value1, value2);
   answer.low = value1 * value2;
 #else
   answer.low = _umul128(value1, value2, &answer.high); // _umul128 not available on ARM64
-#endif // _M_ARM64
+#endif // SIMDJSON_IS_ARM64
 #else // SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
   __uint128_t r = (static_cast<__uint128_t>(value1)) * value2;
   answer.low = uint64_t(r);

include/simdjson/haswell/simd.h

@@ -65,10 +65,10 @@ namespace simd {
   struct simd8<bool>: base8<bool> {
     static simdjson_inline simd8<bool> splat(bool _value) { return _mm256_set1_epi8(uint8_t(-(!!_value))); }
 
-    simdjson_inline simd8<bool>() : base8() {}
-    simdjson_inline simd8<bool>(const __m256i _value) : base8<bool>(_value) {}
+    simdjson_inline simd8() : base8() {}
+    simdjson_inline simd8(const __m256i _value) : base8<bool>(_value) {}
     // Splat constructor
-    simdjson_inline simd8<bool>(bool _value) : base8<bool>(splat(_value)) {}
+    simdjson_inline simd8(bool _value) : base8<bool>(splat(_value)) {}
 
     simdjson_inline int to_bitmask() const { return _mm256_movemask_epi8(*this); }
     simdjson_inline bool any() const { return !_mm256_testz_si256(*this, *this); }

include/simdjson/icelake/numberparsing_defs.h

@@ -33,13 +33,13 @@ static simdjson_inline uint32_t parse_eight_digits_unrolled(const uint8_t *chars
 simdjson_inline internal::value128 full_multiplication(uint64_t value1, uint64_t value2) {
   internal::value128 answer;
 #if SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
-#ifdef _M_ARM64
+#if SIMDJSON_IS_ARM64
   // ARM64 has native support for 64-bit multiplications, no need to emultate
   answer.high = __umulh(value1, value2);
   answer.low = value1 * value2;
 #else
   answer.low = _umul128(value1, value2, &answer.high); // _umul128 not available on ARM64
-#endif // _M_ARM64
+#endif // SIMDJSON_IS_ARM64
 #else // SIMDJSON_REGULAR_VISUAL_STUDIO || SIMDJSON_IS_32BITS
   __uint128_t r = (static_cast<__uint128_t>(value1)) * value2;
   answer.low = uint64_t(r);

include/simdjson/icelake/simd.h

@@ -93,10 +93,10 @@ namespace simd {
   struct simd8<bool>: base8<bool> {
     static simdjson_inline simd8<bool> splat(bool _value) { return _mm512_set1_epi8(uint8_t(-(!!_value))); }
 
-    simdjson_inline simd8<bool>() : base8() {}
-    simdjson_inline simd8<bool>(const __m512i _value) : base8<bool>(_value) {}
+    simdjson_inline simd8() : base8() {}
+    simdjson_inline simd8(const __m512i _value) : base8<bool>(_value) {}
     // Splat constructor
-    simdjson_inline simd8<bool>(bool _value) : base8<bool>(splat(_value)) {}
+    simdjson_inline simd8(bool _value) : base8<bool>(splat(_value)) {}
     simdjson_inline bool any() const { return !!_mm512_test_epi8_mask (*this, *this); }
     simdjson_inline simd8<bool> operator~() const { return *this ^ true; }
   };

include/simdjson/implementation.h

@@ -53,7 +53,7 @@ public:
    *
    * @return the name of the implementation, e.g. "haswell", "westmere", "arm64".
    */
-  virtual const std::string &name() const { return _name; }
+  virtual std::string name() const { return std::string(_name); }
 
   /**
    * The description of this implementation.
@@ -63,7 +63,7 @@ public:
    *
    * @return the description of the implementation, e.g. "Intel/AMD AVX2", "Intel/AMD SSE4.2", "ARM NEON".
    */
-  virtual const std::string &description() const { return _description; }
+  virtual std::string description() const { return std::string(_description); }
 
   /**
    * The instruction sets this implementation is compiled against
@@ -139,18 +139,19 @@ protected:
     _required_instruction_sets(required_instruction_sets)
   {
   }
-  virtual ~implementation()=default;
+protected:
+  ~implementation() = default;
 
 private:
   /**
    * The name of this implementation.
    */
-  const std::string _name;
+  std::string_view _name;
 
   /**
    * The description of this implementation.
    */
-  const std::string _description;
+  std::string_view _description;
 
   /**
    * Instruction sets required for this implementation.

include/simdjson/implementation_detection.h

@@ -10,6 +10,8 @@
 #define SIMDJSON_IMPLEMENTATION_ID_icelake 4
 #define SIMDJSON_IMPLEMENTATION_ID_ppc64 5
 #define SIMDJSON_IMPLEMENTATION_ID_westmere 6
+#define SIMDJSON_IMPLEMENTATION_ID_lsx 7
+#define SIMDJSON_IMPLEMENTATION_ID_lasx 8
 
 #define SIMDJSON_IMPLEMENTATION_ID_FOR(IMPL) SIMDJSON_CAT(SIMDJSON_IMPLEMENTATION_ID_, IMPL)
 #define SIMDJSON_IMPLEMENTATION_ID SIMDJSON_IMPLEMENTATION_ID_FOR(SIMDJSON_IMPLEMENTATION)
@@ -24,7 +26,11 @@
 #ifndef SIMDJSON_IMPLEMENTATION_ARM64
 #define SIMDJSON_IMPLEMENTATION_ARM64 (SIMDJSON_IS_ARM64)
 #endif
-#define SIMDJSON_CAN_ALWAYS_RUN_ARM64 SIMDJSON_IMPLEMENTATION_ARM64 && SIMDJSON_IS_ARM64
+#if SIMDJSON_IMPLEMENTATION_ARM64 && SIMDJSON_IS_ARM64
+#define SIMDJSON_CAN_ALWAYS_RUN_ARM64 1
+#else
+#define SIMDJSON_CAN_ALWAYS_RUN_ARM64 0
+#endif
 
 // Default Icelake to on if this is x86-64. Even if we're not compiled for it, it could be selected
 // at runtime.
@@ -35,9 +41,20 @@
 #ifdef _MSC_VER
 // To see why  (__BMI__) && (__PCLMUL__) && (__LZCNT__) are not part of this next line, see
 // https://github.com/simdjson/simdjson/issues/1247
-#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
+#if ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
+#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE 1
 #else
-#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
+#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE 0
+#endif
+
+#else
+
+#if ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
+#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE 1
+#else
+#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE 0
+#endif
+
 #endif
 
 // Default Haswell to on if this is x86-64. Even if we're not compiled for it, it could be selected
@@ -53,9 +70,20 @@
 #ifdef _MSC_VER
 // To see why  (__BMI__) && (__PCLMUL__) && (__LZCNT__) are not part of this next line, see
 // https://github.com/simdjson/simdjson/issues/1247
-#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__))
+#if ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__))
+#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL 1
 #else
-#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__))
+#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL 0
+#endif
+
+#else
+
+#if ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__))
+#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL 1
+#else
+#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL 0
+#endif
+
 #endif
 
 // Default Westmere to on if this is x86-64.
@@ -67,16 +95,40 @@
 #define SIMDJSON_IMPLEMENTATION_WESTMERE SIMDJSON_IS_X86_64
 #endif
 #endif
-#define SIMDJSON_CAN_ALWAYS_RUN_WESTMERE (SIMDJSON_IMPLEMENTATION_WESTMERE && SIMDJSON_IS_X86_64 && __SSE4_2__ && __PCLMUL__)
+
+#if (SIMDJSON_IMPLEMENTATION_WESTMERE && SIMDJSON_IS_X86_64 && __SSE4_2__ && __PCLMUL__)
+#define SIMDJSON_CAN_ALWAYS_RUN_WESTMERE 1
+#else
+#define SIMDJSON_CAN_ALWAYS_RUN_WESTMERE 0
+#endif
+
 
 #ifndef SIMDJSON_IMPLEMENTATION_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 && SIMDJSON_IS_PPC64_VMX
+#if SIMDJSON_IMPLEMENTATION_PPC64 && SIMDJSON_IS_PPC64 && SIMDJSON_IS_PPC64_VMX
+#define SIMDJSON_CAN_ALWAYS_RUN_PPC64 1
+#else
+#define SIMDJSON_CAN_ALWAYS_RUN_PPC64 0
+#endif
+
+#ifndef SIMDJSON_IMPLEMENTATION_LASX
+#define SIMDJSON_IMPLEMENTATION_LASX (SIMDJSON_IS_LOONGARCH64 && __loongarch_asx)
+#endif
+#define SIMDJSON_CAN_ALWAYS_RUN_LASX (SIMDJSON_IMPLEMENTATION_LASX)
+
+#ifndef SIMDJSON_IMPLEMENTATION_LSX
+#if SIMDJSON_CAN_ALWAYS_RUN_LASX
+#define SIMDJSON_IMPLEMENTATION_LSX 0
+#else
+#define SIMDJSON_IMPLEMENTATION_LSX (SIMDJSON_IS_LOONGARCH64 && __loongarch_sx)
+#endif
+#endif
+#define SIMDJSON_CAN_ALWAYS_RUN_LSX (SIMDJSON_IMPLEMENTATION_LSX)
 
 // Default Fallback to on unless a builtin implementation has already been selected.
 #ifndef SIMDJSON_IMPLEMENTATION_FALLBACK
-#if SIMDJSON_CAN_ALWAYS_RUN_ARM64 || SIMDJSON_CAN_ALWAYS_RUN_ICELAKE || SIMDJSON_CAN_ALWAYS_RUN_HASWELL || SIMDJSON_CAN_ALWAYS_RUN_WESTMERE || SIMDJSON_CAN_ALWAYS_RUN_PPC64
+#if SIMDJSON_CAN_ALWAYS_RUN_ARM64 || SIMDJSON_CAN_ALWAYS_RUN_ICELAKE || SIMDJSON_CAN_ALWAYS_RUN_HASWELL || SIMDJSON_CAN_ALWAYS_RUN_WESTMERE || SIMDJSON_CAN_ALWAYS_RUN_PPC64 || SIMDJSON_CAN_ALWAYS_RUN_LSX || SIMDJSON_CAN_ALWAYS_RUN_LASX
 // if anything at all except fallback can always run, then disable fallback.
 #define SIMDJSON_IMPLEMENTATION_FALLBACK 0
 #else
@@ -98,6 +150,10 @@
 #define SIMDJSON_BUILTIN_IMPLEMENTATION arm64
 #elif SIMDJSON_CAN_ALWAYS_RUN_PPC64
 #define SIMDJSON_BUILTIN_IMPLEMENTATION ppc64
+#elif SIMDJSON_CAN_ALWAYS_RUN_LSX
+#define SIMDJSON_BUILTIN_IMPLEMENTATION lsx
+#elif SIMDJSON_CAN_ALWAYS_RUN_LASX
+#define SIMDJSON_BUILTIN_IMPLEMENTATION lasx
 #elif SIMDJSON_CAN_ALWAYS_RUN_FALLBACK
 #define SIMDJSON_BUILTIN_IMPLEMENTATION fallback
 #else