Flatbuffers Version 2.0.7 (#7462)

* reworked keep prefix

* checking in missing schema

* fix flatc path for build scripts

.appveyor/check-generate-code.bat

@@ -1,41 +0,0 @@
-:: Copyright 2018 Google Inc. All rights reserved.
-::
-:: Licensed under the Apache License, Version 2.0 (the "License");
-:: you may not use this file except in compliance with the License.
-:: You may obtain a copy of the License at
-::
-::     http://www.apache.org/licenses/LICENSE-2.0
-::
-:: Unless required by applicable law or agreed to in writing, software
-:: distributed under the License is distributed on an "AS IS" BASIS,
-:: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-:: See the License for the specific language governing permissions and
-:: limitations under the License.
-set buildtype=Release
-if "%1"=="-b" set buildtype=%2
-
-cd tests
-call generate_code.bat -b %buildtype% || goto FAIL
-
-:: TODO: Release and Debug builds produce differences here for some reason.
-git checkout HEAD -- monster_test.bfbs
-git checkout HEAD -- arrays_test.bfbs
-
-git -c core.autocrlf=true diff --exit-code --quiet || goto :DIFFFOUND
-goto SUCCESS
-
-:DIFFFOUND
-@echo "" >&2
-@echo "ERROR: ********************************************************" >&2
-@echo "ERROR: The following differences were found after running the" >&2
-@echo "ERROR: tests/generate_code.sh script.  Maybe you forgot to run" >&2
-@echo "ERROR: it after making changes in a generator or schema?" >&2
-@echo "ERROR: ********************************************************" >&2
-@echo "" >&2
-@git -c core.autocrlf=true --no-pager diff --binary
-
-:FAIL
-set EXITCODE=1
-:SUCCESS
-cd ..
-EXIT /B %EXITCODE%

.bazelci/presubmit.yml

@@ -1,18 +1,36 @@
 ---
 buildifier: latest
 platforms:
-  ubuntu1604:
-    build_targets:
-    - "..."
-    test_targets:
-    - "..."
   ubuntu1804:
+    environment:
+      CC: clang
+      SWIFT_VERSION: "5.5.3"
+      SWIFT_HOME: "$HOME/swift-$SWIFT_VERSION"
+      PATH: "$PATH:$SWIFT_HOME/usr/bin"
+    shell_commands:
+      - "echo --- Downloading and extracting Swift $SWIFT_VERSION to $SWIFT_HOME"
+      - "mkdir $SWIFT_HOME"
+      - "curl https://download.swift.org/swift-${SWIFT_VERSION}-release/ubuntu1804/swift-${SWIFT_VERSION}-RELEASE/swift-${SWIFT_VERSION}-RELEASE-ubuntu18.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
     build_targets:
-    - "..."
+    - "//..."
     test_targets:
-    - "..."
+    - "//..."
+  ubuntu2004:
+    environment:
+      CC: clang
+      SWIFT_VERSION: "5.5.3"
+      SWIFT_HOME: "$HOME/swift-$SWIFT_VERSION"
+      PATH: "$PATH:$SWIFT_HOME/usr/bin"
+    shell_commands:
+      - "echo --- Downloading and extracting Swift $SWIFT_VERSION to $SWIFT_HOME"
+      - "mkdir $SWIFT_HOME"
+      - "curl https://download.swift.org/swift-${SWIFT_VERSION}-release/ubuntu2004/swift-${SWIFT_VERSION}-RELEASE/swift-${SWIFT_VERSION}-RELEASE-ubuntu20.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
+    build_targets:
+    - "//..."
+    test_targets:
+    - "//..."
   macos:
     build_targets:
-    - "..."
+    - "//..."
     test_targets:
-    - "..."
+    - "//..."

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,18 +2,17 @@ Thank you for submitting a PR!
 
 Please delete this standard text once you've created your own description.
 
-Make sure you include the names of the affected language(s) in your PR title.
+If you make changes to any of the code generators (`src/idl_gen*`) be sure to
-This helps us get the correct maintainers to look at your issue.
+build your project, as it will generate code based on the changes. If necessary
+the code generation script can be directly run (`scripts/generate_code.py`),
+requires Python3. This allows us to better see the effect of the PR.
 
-If you make changes to any of the code generators, be sure to run
+If your PR includes C++ code, please adhere to the
-`cd tests && bash generate_code.sh` (or equivalent .bat) and include the generated
+[Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html),
-code changes in the PR. This allows us to better see the effect of the PR.
-
-If your PR includes C++ code, please adhere to the Google C++ Style Guide,
 and don't forget we try to support older compilers (e.g. VS2010, GCC 4.6.3),
 so only some C++11 support is available.
 
-For any C++ changes, please make sure to run `sh src/clang-format-git.sh`
+For any C++ changes, please make sure to run `sh scripts/clang-format-git.sh`
 
 Include other details as appropriate.
 

.github/labeler.yml

@@ -49,6 +49,7 @@ lua:
   - '**/*.lua'
   - lua/**/*
   - src/idl_gen_lua.cpp
+  - src/bfbs_gen_lua.cpp
 
 lobster:
   - '**/*.lobster'
@@ -85,11 +86,9 @@ documentation:
 
 CI:
   - '.github/**/*'
-  - '.appveyor/**/*'
   - '.travis/**/*'
   - '.bazelci/**/*'
   - .travis.yml
-  - appveyor.yml
 
 grpc:
   - grpc/**/*

.github/workflows/build.yml

@@ -1,7 +1,12 @@
 name: CI
+permissions: read-all
 
 on:
+  # For manual tests.
+  workflow_dispatch:
   push:
+    tags:
+      - "*" # new tag version, like `0.8.4` or else
     branches:
       - master
   pull_request:
@@ -10,165 +15,346 @@ on:
 
 jobs:
   build-linux:
+    permissions:
+      contents: write
+    outputs:
+      digests-gcc: ${{ steps.hash-gcc.outputs.hashes }}
+      digests-clang: ${{ steps.hash-clang.outputs.hashes }}
     name: Build Linux
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        cxx: [g++-9, clang++-9]
+        cxx: [g++-10, clang++-12]
+      fail-fast: false
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: cmake
-      run: CXX=${{ matrix.cxx }} cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release .
+      run: CXX=${{ matrix.cxx }} cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON .
     - name: build
-      run: make -j4
+      run: make -j
     - name: test
       run: ./flattests
+    - name: make flatc executable
+      run: |
+        chmod +x flatc
+        ./flatc --version
+    - name: flatc tests
+      run: python3 tests/flatc/main.py
     - name: upload build artifacts
       uses: actions/upload-artifact@v1
       with:
         name: Linux flatc binary ${{ matrix.cxx }}
         path: flatc
+    # Below if only for release.
+    - name: Zip file
+      if: startsWith(github.ref, 'refs/tags/')
+      run: zip Linux.flatc.binary.${{ matrix.cxx }}.zip flatc
+    - name: Release zip file
+      uses: softprops/action-gh-release@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        files: Linux.flatc.binary.${{ matrix.cxx }}.zip
+    - name: Generate SLSA subjects - clang
+      if: matrix.cxx == 'clang++-12' && startsWith(github.ref, 'refs/tags/')
+      id: hash-clang
+      run: echo "::set-output name=hashes::$(sha256sum Linux.flatc.binary.${{ matrix.cxx }}.zip | base64 -w0)"
+    - name: Generate SLSA subjects - gcc
+      if: matrix.cxx == 'g++-10' && startsWith(github.ref, 'refs/tags/')
+      id: hash-gcc
+      run: echo "::set-output name=hashes::$(sha256sum Linux.flatc.binary.${{ matrix.cxx }}.zip | base64 -w0)"
 
   build-windows:
-    name: Build Windows
+    permissions:
-    runs-on: windows-latest
+      contents: write
+    outputs:
+      digests: ${{ steps.hash.outputs.hashes }}
+    name: Build Windows 2019 
+    runs-on: windows-2019
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Add msbuild to PATH
-      uses: microsoft/setup-msbuild@v1.0.2
+      uses: microsoft/setup-msbuild@v1.1
     - name: cmake
-      run: cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_CPP17=ON .
+      run: cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_CPP17=ON -DFLATBUFFERS_STRICT_MODE=ON .
     - name: build
       run: msbuild.exe FlatBuffers.sln /p:Configuration=Release /p:Platform=x64
     - name: test
       run: Release\flattests.exe
+    - name: flatc tests
+      run: python3 tests/flatc/main.py --flatc Release\flatc.exe
     - name: upload build artifacts
       uses: actions/upload-artifact@v1
       with:
         name: Windows flatc binary
         path: Release\flatc.exe
+    # Below if only for release.
+    - name: Zip file
+      if: startsWith(github.ref, 'refs/tags/')
+      run: move Release/flatc.exe . && Compress-Archive flatc.exe Windows.flatc.binary.zip
+    - name: Release binary
+      uses: softprops/action-gh-release@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        files: Windows.flatc.binary.zip
+    - name: Generate SLSA subjects
+      if: startsWith(github.ref, 'refs/tags/')
+      id: hash
+      shell: bash
+      run: echo "::set-output name=hashes::$(sha256sum Windows.flatc.binary.zip | base64 -w0)"
 
   build-windows-2017:
     name: Build Windows 2017
-    runs-on: windows-2016
+    runs-on: windows-2019
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Add msbuild to PATH
-      uses: microsoft/setup-msbuild@v1.0.2
+      uses: microsoft/setup-msbuild@v1.1
     - name: cmake
-      run: cmake -G "Visual Studio 15 2017" -A x64 -DCMAKE_BUILD_TYPE=Release .
+      run: cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON .
-    - name: build
+    - name: build tool version 15 (VS 2017)
-      run: msbuild.exe FlatBuffers.sln /p:Configuration=Release /p:Platform=x64
+      run: msbuild.exe FlatBuffers.sln /p:Configuration=Release /p:Platform=x64 /p:VisualStudioVersion=15.0
     - name: test
       run: Release\flattests.exe
 
-  build-mac:
+  build-windows-2015:
-    name: Build Mac
+    name: Build Windows 2015
+    runs-on: windows-2019
+    steps:
+    - uses: actions/checkout@v2
+    - name: Add msbuild to PATH
+      uses: microsoft/setup-msbuild@v1.1
+    - name: cmake
+      run: cmake -G "Visual Studio 14 2015" -A x64 -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON .
+    - name: build tool version 14 (VS 2015)
+      run: msbuild.exe FlatBuffers.sln /p:Configuration=Release /p:Platform=x64 /p:VisualStudioVersion=14.0
+    - name: test
+      run: Release\flattests.exe
+
+  build-dotnet-windows:
+    name: Build .NET Windows
+    runs-on: windows-2019
+    strategy:
+      matrix:
+        configuration: [
+          '',
+          '-p:UnsafeByteBuffer=true', 
+          # Fails two tests currently.
+          #'-p:EnableSpanT=true,UnsafeByteBuffer=true'
+          ]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET Core SDK
+      uses: actions/setup-dotnet@v1.9.0
+      with: 
+        dotnet-version: '3.1.x'
+    - name: Build
+      run: |
+        cd tests\FlatBuffers.Test
+        dotnet new sln --force --name FlatBuffers.Core.Test
+        dotnet sln FlatBuffers.Core.Test.sln add FlatBuffers.Core.Test.csproj
+        dotnet build -c Release ${{matrix.configuration}} -o out FlatBuffers.Core.Test.sln
+    - name: Run
+      run: |
+        cd tests\FlatBuffers.Test
+        out\FlatBuffers.Core.Test.exe
+
+  build-mac-intel:
+    permissions:
+      contents: write
+    outputs:
+      digests: ${{ steps.hash.outputs.hashes }}
+    name: Build Mac (for Intel)
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: cmake
-      run: cmake -G "Xcode" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_FLATC_EXECUTABLE=_build/Release/flatc .
+      run: cmake -G "Xcode" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_FLATC_EXECUTABLE=_build/Release/flatc -DFLATBUFFERS_STRICT_MODE=ON .
     - name: build
       # NOTE: we need this _build dir to not have xcodebuild's default ./build dir clash with the BUILD file.
       run: xcodebuild -toolchain clang -configuration Release -target flattests SYMROOT=$(PWD)/_build
+    - name: check that the binary is x86_64
+      run: |
+        info=$(file _build/Release/flatc)
+        echo $info
+        echo $info | grep "Mach-O 64-bit executable x86_64"
     - name: test
       run: _build/Release/flattests
+    - name: make flatc executable
+      run: |
+        chmod +x _build/Release/flatc
+        ./_build/Release/flatc --version
+    - name: flatc tests
+      run: python3 tests/flatc/main.py --flatc ./_build/Release/flatc
     - name: upload build artifacts
       uses: actions/upload-artifact@v1
       with:
         name: Mac flatc binary
         path: _build/Release/flatc
+    # Below if only for release.
+    - name: Zip file
+      if: startsWith(github.ref, 'refs/tags/')
+      run: mv _build/Release/flatc . && zip MacIntel.flatc.binary.zip flatc
+    - name: Release binary
+      uses: softprops/action-gh-release@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        files: MacIntel.flatc.binary.zip
+    - name: Generate SLSA subjects
+      if: startsWith(github.ref, 'refs/tags/')
+      id: hash
+      run: echo "::set-output name=hashes::$(shasum -a 256 MacIntel.flatc.binary.zip | base64)"
+
+  build-mac-universal:
+    permissions:
+      contents: write
+    outputs:
+      digests: ${{ steps.hash.outputs.hashes }}
+    name: Build Mac (universal build)
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake
+      run: cmake -G "Xcode" -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_FLATC_EXECUTABLE=_build/Release/flatc -DFLATBUFFERS_STRICT_MODE=ON .
+    - name: build
+      # NOTE: we need this _build dir to not have xcodebuild's default ./build dir clash with the BUILD file.
+      run: xcodebuild -toolchain clang -configuration Release -target flattests SYMROOT=$(PWD)/_build
+    - name: check that the binary is "universal"
+      run: |
+        info=$(file _build/Release/flatc)
+        echo $info
+        echo $info | grep "Mach-O universal binary with 2 architectures"
+    - name: test
+      run: _build/Release/flattests
+    - name: make flatc executable
+      run: |
+        chmod +x _build/Release/flatc
+        ./_build/Release/flatc --version
+    - name: upload build artifacts
+      uses: actions/upload-artifact@v1
+      with:
+        name: Mac flatc binary
+        path: _build/Release/flatc
+    # Below if only for release.
+    - name: Zip file
+      if: startsWith(github.ref, 'refs/tags/')
+      run: mv _build/Release/flatc . && zip Mac.flatc.binary.zip flatc
+    - name: Release binary
+      uses: softprops/action-gh-release@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        files: Mac.flatc.binary.zip
+    - name: Generate SLSA subjects
+      if: startsWith(github.ref, 'refs/tags/')
+      id: hash
+      run: echo "::set-output name=hashes::$(shasum -a 256 Mac.flatc.binary.zip | base64)"
 
   build-android:
    name: Build Android (on Linux)
    runs-on: ubuntu-latest
    steps:
-   - uses: actions/checkout@v1
+   - uses: actions/checkout@v2
    - name: set up JDK 1.8
      uses: actions/setup-java@v1
      with:
        java-version: 1.8
    - name: set up flatc
      run: |
-       cmake -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF .
+       cmake -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF -DFLATBUFFERS_STRICT_MODE=ON .
-       make
+       make -j
        echo "${PWD}" >> $GITHUB_PATH
    - name: build
      working-directory: android
-     run: bash ./gradlew clean build
+     run: gradle clean build
 
   build-generator:
     name: Check Generated Code
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        cxx: [g++-9, clang++-9]
+        cxx: [g++-10, clang++-12]
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: cmake
-      run: CXX=${{ matrix.cxx }} cmake -G "Unix Makefiles" -DFLATBUFFERS_BUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release . && make -j4
+      run: CXX=${{ matrix.cxx }} cmake -G "Unix Makefiles" -DFLATBUFFERS_BUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON . && make -j
     - name: Generate
-      run: bash scripts/check-generate-code.sh && bash scripts/check-grpc-generated-code.sh
+      run: scripts/check_generate_code.py
+    - name: Generate gRPC
+      run: scripts/check-grpc-generated-code.py
+
+  build-benchmarks:
+    name: Build Benchmarks (on Linux)
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        cxx: [g++-10]
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake
+      run: CXX=${{ matrix.cxx }} cmake -G "Unix Makefiles" -DFLATBUFFERS_CXX_FLAGS="-Wno-unused-parameter -fno-aligned-new" -DFLATBUFFERS_BUILD_BENCHMARKS=ON -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON . && make -j
+    - name: Run benchmarks
+      run: ./flatbenchmark --benchmark_repetitions=5 --benchmark_display_aggregates_only=true --benchmark_out_format=console --benchmark_out=benchmarks/results_${{matrix.cxx}}
+    - name: Upload benchmarks results
+      uses: actions/upload-artifact@v1
+      with:
+        name: Linux flatbenchmark results ${{matrix.cxx}}
+        path: benchmarks/results_${{matrix.cxx}}
 
   build-java:
     name: Build Java
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: test
       working-directory: tests
       run: bash JavaTest.sh
 
-  build-kotlin:
+  build-kotlin-macos:
-    name: Build Kotlin
+    name: Build Kotlin MacOS
     runs-on: macos-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
+    - uses: gradle/wrapper-validation-action@v1
+    - uses: actions/setup-java@v2
+      with:
+        distribution: 'adopt-hotspot'
+        java-version: '11'
     - name: Build
       working-directory: kotlin
-      run: ./gradlew clean build allTests
+      run: ./gradlew clean iosX64Test macosX64Test
-    - name: Run Benchmark
+
-      working-directory: kotlin  
+  build-kotlin-linux:
-      run: ./gradlew benchmark
+    name: Build Kotlin Linux
-    - name: Generate Benchmark Report
+    runs-on: ubuntu-latest
-      working-directory: kotlin  
+    steps:
-      run: |
+    - name: Checkout
-        ./gradlew jmhReport;
+      uses: actions/checkout@v2
-        mv benchmark/build/reports/benchmarks/main/* benchmark_latest
+    - uses: actions/setup-java@v2
-    - name: Archive benchmark report
-      uses: actions/upload-artifact@v1
       with:
-        name: Kotlin Benchmark Report
+        distribution: 'adopt-hotspot'
-        path: kotlin/benchmark_latest
+        java-version: '11'
+    - uses: gradle/wrapper-validation-action@v1
+    - name: Build
+      working-directory: kotlin
+      # we are using docker's version of gradle
+      # so no need for wrapper validadation or user
+      # gradlew
+      run: gradle jvmMainClasses jvmTest jsTest jsBrowserTest
 
   build-rust:
     name: Build Rust
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: test
       working-directory: tests
       run: bash RustTest.sh
 
-  #build-js:
-  #  name: Build JS
-  #  runs-on: ubuntu-latest
-  #  steps:
-  #  - uses: actions/checkout@v1
-  #  - name: flatc
-  #    # FIXME: make test script not rely on flatc
-  #    run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF . && make -j4
-  #  - name: test
-  #    working-directory: tests
-  #    run: bash JavaScriptTest.sh
-
   build-python:
     name: Build Python
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: test
       working-directory: tests
       run: bash PythonTest.sh
@@ -177,53 +363,97 @@ jobs:
     name: Build Go
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: flatc
       # FIXME: make test script not rely on flatc
-      run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF . && make -j4
+      run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF -DFLATBUFFERS_STRICT_MODE=ON . && make -j
     - name: test
       working-directory: tests
       run: bash GoTest.sh
 
-  #build-csharp:
-  #  name: Build CSharp
-  #  runs-on: ubuntu-latest
-  #  steps:
-  #  - uses: actions/checkout@v1
-  #  - name: test
-  #    working-directory: tests/FlatBuffers.Test
-  #    run: bash NetTest.sh
-
-  #build-php:
-  #  name: Build PHP
-  #  runs-on: ubuntu-latest
-  #  steps:
-  #  - uses: actions/checkout@v1
-  #  - name: flatc
-  #    # FIXME: make test script not rely on flatc
-  #    run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF . && make -j4
-  #  - name: test
-  #    working-directory: tests
-  #    run: |
-  #      php phpTest.php
-  #      sh phpUnionVectorTest.sh
-
   build-swift:
     name: Build Swift
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: test
       working-directory: tests/FlatBuffers.Test.Swift
       run: sh SwiftTest.sh
 
+  build-swift-wasm:
+    name: Build Swift Wasm
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/swiftwasm/carton:0.15.3
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Wasmer
+        uses: wasmerio/setup-wasmer@v1
+      - name: Test
+        working-directory: tests/FlatBuffers.Test.Swift.Wasm
+        run: carton test
+
   build-ts:
     name: Build TS
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
+    - name: flatc
+      # FIXME: make test script not rely on flatc
+      run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF . && make -j
     - name: compile
       run: npm run compile
     - name: test
       working-directory: tests
-      run: sh TypeScriptTest.sh
+      run: python3 TypeScriptTest.py
+
+  build-dart:
+    name: Build Dart
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v1
+        with:
+          sdk: stable
+      - name: flatc
+        # FIXME: make test script not rely on flatc
+        run: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_INSTALL=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF -DFLATBUFFERS_STRICT_MODE=ON . && make -j
+      - name: test
+        working-directory: tests
+        run: bash DartTest.sh
+
+  release-digests:
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: [build-linux, build-windows, build-mac-intel, build-mac-universal]
+    outputs:
+      digests: ${{ steps.hash.outputs.digests }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Merge results
+        id: hash
+        env:
+          LINUXGCC_DIGESTS: "${{ needs.build-linux.outputs.digests-gcc }}"
+          LINUXCLANG_DIGESTS: "${{ needs.build-linux.outputs.digests-clang }}"
+          MAC_DIGESTS: "${{ needs.build-mac-universal.outputs.digests }}"
+          MACINTEL_DIGESTS: "${{ needs.build-mac-intel.outputs.digests }}"
+          WINDOWS_DIGESTS: "${{ needs.build-windows.outputs.digests }}"
+        run: |
+          set -euo pipefail
+          echo "$LINUXGCC_DIGESTS" | base64 -d > checksums.txt
+          echo "$LINUXCLANG_DIGESTS" | base64 -d >> checksums.txt
+          echo "$MAC_DIGESTS" | base64 -d >> checksums.txt
+          echo "$MACINTEL_DIGESTS" | base64 -d >> checksums.txt
+          echo "$WINDOWS_DIGESTS" | base64 -d >> checksums.txt
+          echo "::set-output name=digests::$(cat checksums.txt | base64 -w0)"
+
+  provenance:
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: [release-digests]
+    permissions:
+      actions: read   # To read the workflow path.
+      id-token: write # To sign the provenance.
+      contents: write # To add assets to a release.
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.2.0
+    with:
+      base64-subjects: "${{ needs.release-digests.outputs.digests }}"
+      upload-assets: true # Optional: Upload to a new release

.github/workflows/codeql.yml

@@ -0,0 +1,71 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+permissions: read-all
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+  schedule:
+    - cron: '16 20 * * 0'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://git.io/codeql-language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    # - name: Autobuild
+    #  uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    - run: |
+       cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DFLATBUFFERS_STRICT_MODE=ON .
+       make -j       
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2

.github/workflows/label.yml

@@ -6,10 +6,15 @@
 # https://github.com/actions/labeler
 
 name: Labeler
+permissions: read-all
+
 on: [pull_request_target]
 
 jobs:
   label:
+    permissions:
+      contents: read
+      pull-requests: write
       
     runs-on: ubuntu-latest
 

.github/workflows/main.yml

@@ -0,0 +1,34 @@
+name: OSS-Fuzz
+permissions: read-all
+
+on: 
+  pull_request:
+    branches:
+      - master
+    paths:
+      - include/**
+      - src/**
+      - tests/**.cpp
+      - tests/**.h
+jobs:
+ Fuzzing:
+   runs-on: ubuntu-latest
+   steps:
+   - name: Build Fuzzers
+     id: build
+     uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+     with:
+       oss-fuzz-project-name: 'flatbuffers'
+       language: c++
+   - name: Run Fuzzers
+     uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+     with:
+       oss-fuzz-project-name: 'flatbuffers'
+       language: c++
+       fuzz-seconds: 60
+   - name: Upload Crash
+     uses: actions/upload-artifact@v1
+     if: failure() && steps.build.outcome == 'success'
+     with:
+       name: artifacts
+       path: ./out/artifacts

.github/workflows/scorecards.yml

@@ -0,0 +1,55 @@
+name: Scorecards supply-chain security
+on:
+  # Only the default branch is supported.
+  branch_protection_rule:
+  schedule:
+    - cron: '21 2 * * 5'
+  push:
+    branches: [ master ]
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecards analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      actions: read
+      contents: read
+
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # v3.0.0
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@c1aec4ac820532bab364f02a81873c555a0ba3a1 # v1.0.4
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # Read-only PAT token. To create it,
+          # follow the steps in https://github.com/ossf/scorecard-action#pat-token-creation.
+          repo_token: ${{ secrets.SCORECARD_READ_TOKEN }}
+          # Publish the results to enable scorecard badges. For more details, see
+          # https://github.com/ossf/scorecard-action#publishing-results.
+          # For private repositories, `publish_results` will automatically be set to `false`,
+          # regardless of the value entered here.
+          publish_results: true
+
+      # Upload the results as artifacts (optional).
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@6673cd052c4cd6fcf4b4e6e60ea986c889389535 # v3.0.0
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard.
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@5f532563584d71fdef14ee64d17bafb34f751ce5 # v1.0.26
+        with:
+          sarif_file: results.sarif

.github/workflows/stale.yml

@@ -1,4 +1,5 @@
 name: Mark stale issues and pull requests
+permissions: read-all
 
 on:
   schedule:
@@ -10,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/stale@v3
+    - uses: actions/stale@v4.0.0
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-pr-message: 'This pull request is stale because it has been open 6 months with no activity. Please comment or this will be closed in 14 days.'
@@ -18,3 +19,6 @@ jobs:
         days-before-stale: 182 # 6 months
         days-before-close: 14
         operations-per-run: 1500
+        exempt-issue-labels: not-stale
+        exempt-pr-labels: not-stale
+        exempt-all-milestones: true

.gitignore

@@ -46,12 +46,16 @@ project.properties
 proguard-project.txt
 linklint_results
 Makefile
+flatbenchmark
+flatbenchmark.exe
 flatc
 flatc.exe
 flathash
 flathash.exe
 flattests
 flattests.exe
+flattests_cpp17
+flattests_cpp17.exe
 flatsamplebinary
 flatsamplebinary.exe
 flatsampletext
@@ -74,7 +78,7 @@ tests/php/
 CMakeLists.txt.user
 CMakeScripts/**
 CTestTestfile.cmake
-FlatbuffersConfigVersion.cmake
+FlatBuffersConfigVersion.cmake
 FlatBuffers.cbp
 build/Xcode/FlatBuffers.xcodeproj/project.xcworkspace/**
 build/Xcode/FlatBuffers.xcodeproj/xcuserdata/**
@@ -101,7 +105,10 @@ android/build/
 samples/android/.externalNativeBuild/
 samples/android/.gradle/
 samples/android/build/
-js/flatbuffers.mjs
+js/**/*.js
+js/**/*.d.ts
+mjs/**/*.js
+mjs/**/*.d.ts
 /bazel-bin
 /bazel-flatbuffers
 /bazel-genfiles
@@ -129,10 +136,6 @@ package-lock.json
 /*.ilk
 /*.pdb
 .clwb
-js/**/*.js
-js/**/*.d.ts
-mjs/**/*.js
-mjs/**/*.d.ts
 yarn-error.log
 .cache/
 /flatbuffers.lib
@@ -141,3 +144,8 @@ yarn-error.log
 **/vendor
 **/go.sum
 flatbuffers.pc
+**/FlatBuffers.Test.Swift.xcodeproj
+**/html/**
+**/latex/**
+# https://cmake.org/cmake/help/latest/module/FetchContent.html#variable:FETCHCONTENT_BASE_DIR
+_deps/

.travis.yml

@@ -115,7 +115,6 @@ matrix:
         -DFLATBUFFERS_CODE_SANITIZE=ON
       - cmake --build . --target all --clean-first -- -j${JOBS}
       - LD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/google/grpc/install/lib ctest --extra-verbose --output-on-failure
-      - bash scripts/check-generate-code.sh
 
     - language: cpp
       os: osx
@@ -140,7 +139,6 @@ matrix:
         -DFLATBUFFERS_CODE_SANITIZE=ON
       - cmake --build . -- -j${JOBS}
       - DYLD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/google/grpc/install/lib ctest --extra-verbose --output-on-failure
-      - bash scripts/check-generate-code.sh
 
     - <<: *conan-linux-master
       env: CONAN_GCC_VERSIONS=8 CONAN_DOCKER_IMAGE=conanio/gcc8

.travis/build-and-run-docker-test-containers.sh

@@ -1,45 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2018 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-set -e
-
-docker build -t build_cpp_image -f tests/docker/Dockerfile.testing.cpp.debian_buster .
-# Run tests with sanitizers  (--cap-add SYS_PTRACE), both GCC and Clang.
-cpp_test_args="--cap-add SYS_PTRACE build_cpp_image sh ./tests/docker/cpp_test.run.sh Debug"
-docker run --rm $cpp_test_args
-docker run --rm --env CC=/usr/bin/clang --env CXX=/usr/bin/clang++ $cpp_test_args
-# Build flatc on debian once to speed up the test loop below.
-docker run --name flatc_container build_cpp_image sh ./tests/docker/build_flatc.run.sh Debug
-# All dependent dockers refer to 'flatc_debian_stretch'.
-docker cp flatc_container:/flatbuffers/flatc flatc_debian_stretch
-
-for f in $(ls tests/docker/languages | sort)
-do
-        # docker pull sometimes fails for unknown reasons, probably travisci-related. this retries the pull we need a few times.
-        REQUIRED_BASE_IMAGE=$(cat tests/docker/languages/${f} | head -n 1  | awk ' { print $2 } ')
-
-        set +e
-        n=0
-        until [ $n -ge 5 ]
-        do
-           docker pull $REQUIRED_BASE_IMAGE && break
-           n=$[$n+1]
-           sleep 1
-        done
-        set -e
-
-        docker build -t $(echo ${f} | cut -f 3- -d .) -f tests/docker/languages/${f} .
-        echo "TEST OK: ${f}"
-done

.travis/check-sources.sh

@@ -1,33 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2018 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-set -e
-
-if [ -n "$1" ]; then
-  scan_dir="$1"
-else
-  scan_dir="$( pwd )"
-fi
-
-py_checker="$0.py"
-
-echo "scan root directory = '$scan_dir'"
-python3 --version
-# Scan recursively and search all *.cpp and *.h files using regex patterns.
-# Assume that script running from a root of Flatbuffers working dir.
-python3 $py_checker "ascii" "$scan_dir/include" "\.h$"
-python3 $py_checker "ascii" "$scan_dir/src"     "\.cpp$"
-python3 $py_checker "ascii" "$scan_dir/tests"   "\.h$"
-python3 $py_checker "utf-8" "$scan_dir/tests"   "\.cpp$"

.travis/check-sources.sh.py

@@ -1,35 +0,0 @@
-import os
-import re
-import sys
-
-def check_encoding(encoding, scan_dir, regex_pattern):
-  fname = None
-  try:
-    assert encoding in ['ascii', 'utf-8'], "unexpected encoding"
-    cmp = re.compile(regex_pattern)
-    for root, dirs, files in os.walk(scan_dir):
-      fname = root
-      cmp_list = [f for f in files if cmp.search(f) is not None]
-      for f in cmp_list:
-        fname = os.path.join(root, f)
-        with open(fname, mode='rb') as test_file:
-          btext = test_file.read()
-        # check encoding
-        btext.decode(encoding=encoding, errors="strict")
-        if encoding == "utf-8" and btext.startswith(b'\xEF\xBB\xBF'):
-          raise ValueError("unexpected BOM in file")
-        # check LF line endings
-        LF = btext.count(b'\n')
-        CR = btext.count(b'\r')
-        if CR!=0:
-          raise ValueError("invalid line endings: LF({})/CR({})".format(LF, CR))
-  except Exception as err:
-    print("ERROR with [{}]: {}".format(fname, err))
-    return -1
-  else:
-    return 0
-
-if __name__ == "__main__":
-  # python check-sources.sh.py 'ascii' '.' '.*\.(cpp|h)$'
-  res = check_encoding(sys.argv[1], sys.argv[2], sys.argv[3])
-  sys.exit(0 if res == 0 else -1)

.travis/deploy-python.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-PROD_REPOSITORY="https://upload.pypi.org/legacy/"
-TEST_REPOSITORY="https://test.pypi.org/legacy/"
-
-twine upload \
-    --username "$PYPI_USERNAME" \
-    --password "$PYPI_PASSWORD" \
-    --repository-url "$PROD_REPOSITORY" \
-    "$DIR/../python/dist/"*
-

.travis/format_check.sh

@@ -1,52 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2021 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -e
-
-# HACKY solution to make nodejs work.
-source ~/.nvm/nvm.sh
-nvm alias default node
-nvm use default
-
-sh src/clang-format-git.sh
-
-# Check formatting for go lang
-
-cd go
-gofmt -w .
-cd ..
-cd grpc/examples/go
-sh format.sh
-cd ../../..
-
-node_modules/.bin/eslint ts/** --ext .ts --quiet --fix
-
-#PYTHON IS DISABLED UNTIL WE CREATE A .pylintrc FILE FOR IT
-pylint python/** --disable=all
-
-swiftformat --config swift.swiftformat .
-
-
-if ! git diff --quiet; then
-  echo >&2
-  echo "ERROR: ********************************************************" >&2
-  echo "ERROR: The following differences were found after running" >&2
-  echo "ERROR: .travis/format_check.sh script. Maybe you forgot to format" >&2
-  echo "ERROR: the code after making changes? please check Formatters.md" >&2
-  echo "ERROR: ********************************************************" >&2
-  echo >&2
-  git diff --binary --exit-code
-fi

.travis/format_install.sh

@@ -1,90 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2020 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -e
-set -x
-
-# install devtools
-install_languages() {
-  sudo apt update
-
-  # Install nodeJS and yarn
-  wget https://raw.githubusercontent.com/creationix/nvm/v0.31.0/nvm.sh -O ~/.nvm/nvm.sh
-  source ~/.nvm/nvm.sh
-  nvm install node
-  node --version
-  curl -o- -L https://yarnpkg.com/install.sh | bash
-  export PATH="$HOME/.yarn/bin:$PATH"
-  yarn config set prefix ~/.yarn -g
-  export PATH="$HOME/.yarn/bin:$HOME/.config/yarn/global/node_modules/.bin:$PATH"
-
-  # Install swift
-  sudo apt-get install \
-          binutils \
-          git \
-          libc6-dev \
-          libcurl3 \
-          libedit2 \
-          libgcc-5-dev \
-          libpython2.7 \
-          libsqlite3-0 \
-          libstdc++-5-dev \
-          libxml2 \
-          pkg-config \
-          tzdata \
-          zlib1g-dev
-
-  SWIFT_URL=https://swift.org/builds/swift-5.3.1-release/ubuntu1604/swift-5.3.1-RELEASE/swift-5.3.1-RELEASE-ubuntu16.04.tar.gz
-  curl -fSsL "$SWIFT_URL" -o swift.tar.gz
-
-  mkdir ~/swiftbuild
-  tar -xvzf swift.tar.gz -C ~/swiftbuild
-
-  export PATH="~/swiftbuild/swift-5.3.1-RELEASE-ubuntu16.04/usr/bin:$PATH"
-
-
-  mkdir ~/gobuild
-  wget -c https://golang.org/dl/go1.15.2.linux-amd64.tar.gz
-  tar -xvzf go1.15.2.linux-amd64.tar.gz -C ~/gobuild
-
-  export  PATH="~/gobuild/go/bin:$PATH"
-
-  swift --version
-  go version
-  yarn -v
-  node -v
-}
-
-install_formatters() {
-  # installing swift formatter
-  git clone --depth 1 --branch 0.47.4 https://github.com/nicklockwood/SwiftFormat.git
-  cd SwiftFormat
-  swift build -c release
-  sudo cp .build/release/swiftformat /usr/local/bin/swiftformat
-  cd ..
-
-  which yarn
-  which node
-  yarn -v
-  node -v
-
-  yarn install
-  pip install pylint
-}
-
-install_languages
-export PATH="~/swift/swift/usr/bin:$PATH"
-install_formatters

BUILD.bazel

@@ -8,8 +8,23 @@ package(
 
 exports_files([
     "LICENSE",
+    "tsconfig.json",
 ])
 
+config_setting(
+    name = "platform_freebsd",
+    constraint_values = [
+        "@platforms//os:freebsd",
+    ],
+)
+
+config_setting(
+    name = "platform_openbsd",
+    constraint_values = [
+        "@platforms//os:openbsd",
+    ],
+)
+
 # Public flatc library to compile flatbuffer files at runtime.
 cc_library(
     name = "flatbuffers",
@@ -23,9 +38,18 @@ cc_library(
 filegroup(
     name = "public_headers",
     srcs = [
+        "include/flatbuffers/allocator.h",
+        "include/flatbuffers/array.h",
         "include/flatbuffers/base.h",
+        "include/flatbuffers/bfbs_generator.h",
+        "include/flatbuffers/buffer.h",
+        "include/flatbuffers/buffer_ref.h",
         "include/flatbuffers/code_generators.h",
+        "include/flatbuffers/default_allocator.h",
+        "include/flatbuffers/detached_buffer.h",
+        "include/flatbuffers/flatbuffer_builder.h",
         "include/flatbuffers/flatbuffers.h",
+        "include/flatbuffers/flex_flat_util.h",
         "include/flatbuffers/flexbuffers.h",
         "include/flatbuffers/grpc.h",
         "include/flatbuffers/hash.h",
@@ -35,7 +59,13 @@ filegroup(
         "include/flatbuffers/reflection_generated.h",
         "include/flatbuffers/registry.h",
         "include/flatbuffers/stl_emulation.h",
+        "include/flatbuffers/string.h",
+        "include/flatbuffers/struct.h",
+        "include/flatbuffers/table.h",
         "include/flatbuffers/util.h",
+        "include/flatbuffers/vector.h",
+        "include/flatbuffers/vector_downward.h",
+        "include/flatbuffers/verifier.h",
     ],
 )
 
@@ -51,6 +81,7 @@ cc_library(
 # Public flatc compiler.
 cc_binary(
     name = "flatc",
+    data = ["//reflection:reflection_fbs_schema"],
     deps = [
         "//src:flatc",
     ],
@@ -73,6 +104,8 @@ cc_library(
         "include/flatbuffers/flexbuffers.h",
         "include/flatbuffers/stl_emulation.h",
         "include/flatbuffers/util.h",
+        "include/flatbuffers/vector.h",
+        "include/flatbuffers/verifier.h",
     ],
     linkstatic = 1,
     strip_include_prefix = "/include",

CHANGELOG.md

@@ -0,0 +1,22 @@
+# Flatbuffers Change Log
+
+All major or breaking changes will be documented in this file, as well as any
+new features that should be highlighted. Minor fixes or improvements are not
+necessarily listed.
+
+## 2.0.7 (Aug 22 2022)
+
+* This is the first version with an explicit change log, so all the previous
+features will not be listed.
+
+* Verifier now checks that buffers are at least the minimum size required to be
+a flatbuffers (12 bytes). This includes nested flatbuffers, which previously
+could be declared valid at size 0.
+
+* Annotated binaries. Given a flatbuffer binary and a schema (or binary schema)
+one can generate an annotated flatbuffer (.afb) to describe each byte in the
+binary with schema metadata and value.
+
+* First binary schema generator (Lua) to generate Lua code via a .bfbs file. 
+This is mostly an implementation detail of flatc internals, but will be slowly
+applied to the other language generators.

CMake/BuildFlatBuffers.cmake

@@ -95,7 +95,7 @@ function(build_flatbuffers flatbuffers_schemas
       set(generated_include ${generated_includes_dir}/${filename}_generated.h)
       add_custom_command(
         OUTPUT ${generated_include}
-        COMMAND ${FLATC} ${FLATC_ARGS}
+        COMMAND ${FLATC} ${FLATC_SCHEMA_ARGS}
         -o ${generated_includes_dir}
         ${include_params}
         -c ${schema}
@@ -230,16 +230,30 @@ function(flatbuffers_generate_headers)
   foreach(schema ${FLATBUFFERS_GENERATE_HEADERS_SCHEMAS})
     get_filename_component(filename ${schema} NAME_WE)
     set(generated_include "${generated_include_dir}/${filename}_generated.h")
+
+    # Generate files for grpc if needed
+    set(generated_source_file)
+    if("${FLATBUFFERS_GENERATE_HEADERS_FLAGS}" MATCHES "--grpc")
+      # Check if schema file contain a rpc_service definition
+      file(STRINGS ${schema} has_grpc REGEX "rpc_service")
+      if(has_grpc)
+        list(APPEND generated_include "${generated_include_dir}/${filename}.grpc.fb.h")
+        set(generated_source_file "${generated_include_dir}/${filename}.grpc.fb.cc")
+      endif()
+    endif()
+
     add_custom_command(
-      OUTPUT ${generated_include}
+      OUTPUT ${generated_include} ${generated_source_file}
       COMMAND ${FLATC} ${FLATC_ARGS}
       -o ${generated_include_dir}
       ${include_params}
       -c ${schema}
       ${FLATBUFFERS_GENERATE_HEADERS_FLAGS}
       DEPENDS ${FLATC_TARGET} ${schema}
-      WORKING_DIRECTORY "${working_dir}")
+      WORKING_DIRECTORY "${working_dir}"
+      COMMENT "Building ${schema} flatbuffers...")
     list(APPEND all_generated_header_files ${generated_include})
+    list(APPEND all_generated_source_files ${generated_source_file})
 
     # Geneate the binary flatbuffers schemas if instructed to.
     if (NOT ${FLATBUFFERS_GENERATE_HEADERS_BINARY_SCHEMAS_DIR} STREQUAL "")
@@ -264,6 +278,7 @@ function(flatbuffers_generate_headers)
     INTERFACE
       ${all_generated_header_files}
       ${all_generated_binary_files}
+      ${all_generated_source_files}
       ${FLATBUFFERS_GENERATE_HEADERS_SCHEMAS})
   add_dependencies(
     ${FLATBUFFERS_GENERATE_HEADERS_TARGET}
@@ -278,6 +293,10 @@ function(flatbuffers_generate_headers)
     TREE "${generated_target_dir}"
     PREFIX "Flatbuffers/Generated/Headers Files"
     FILES ${all_generated_header_files})
+  source_group(
+    TREE "${generated_target_dir}"
+    PREFIX "Flatbuffers/Generated/Source Files"
+    FILES ${all_generated_source_files})
   source_group(
     TREE ${working_dir}
     PREFIX "Flatbuffers/Schemas"
@@ -371,7 +390,8 @@ function(flatbuffers_generate_binary_files)
       -b ${FLATBUFFERS_GENERATE_BINARY_FILES_SCHEMA} ${json_file}
       ${FLATBUFFERS_GENERATE_BINARY_FILES_FLAGS}
       DEPENDS ${FLATC_TARGET} ${json_file}
-      WORKING_DIRECTORY "${working_dir}")
+      WORKING_DIRECTORY "${working_dir}"
+      COMMENT "Building ${json_file} binary flatbuffers...")
       list(APPEND all_generated_binary_files ${generated_binary_file})
   endforeach()
 

CMake/CMakeLists_legacy.cmake.in

@@ -0,0 +1,780 @@
+# This was the legacy <root>/CMakeLists.txt that supported cmake version 2.8.12.
+# It was originally copied on Jan 30 2022, and is conditionally included in the
+# current <root>/CMakeLists.txt if the cmake version used is older than the new
+# minimum version.
+#
+# Only add to this file to fix immediate issues or if a change cannot be made
+# <root>/CMakeList.txt in a compatible way.
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+  if(CMAKE_VERSION VERSION_LESS 3.9)
+    project(FlatBuffers
+      VERSION 2.0.0
+      LANGUAGES CXX)
+  else()
+    project(FlatBuffers
+      DESCRIPTION "Flatbuffers serialization library"
+      VERSION 2.0.0
+      LANGUAGES CXX)
+  endif()
+else()
+  project(FlatBuffers)
+endif (POLICY CMP0048)
+
+include(CMake/Version.cmake)
+
+# generate compile_commands.json
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+# NOTE: Code coverage only works on Linux & OSX.
+option(FLATBUFFERS_CODE_COVERAGE "Enable the code coverage build option." OFF)
+option(FLATBUFFERS_BUILD_TESTS "Enable the build of tests and samples." ON)
+option(FLATBUFFERS_INSTALL "Enable the installation of targets." ON)
+option(FLATBUFFERS_BUILD_FLATLIB "Enable the build of the flatbuffers library"
+       ON)
+option(FLATBUFFERS_BUILD_FLATC "Enable the build of the flatbuffers compiler"
+       ON)
+option(FLATBUFFERS_STATIC_FLATC "Build flatbuffers compiler with -static flag"
+       OFF)
+option(FLATBUFFERS_BUILD_FLATHASH "Enable the build of flathash" ON)
+option(FLATBUFFERS_BUILD_BENCHMARKS "Enable the build of flatbenchmark. \"
+       Requires C++11."
+       OFF)
+option(FLATBUFFERS_BUILD_GRPCTEST "Enable the build of grpctest" OFF)
+option(FLATBUFFERS_BUILD_SHAREDLIB
+       "Enable the build of the flatbuffers shared library"
+       OFF)
+option(FLATBUFFERS_LIBCXX_WITH_CLANG "Force libc++ when using Clang" ON)
+# NOTE: Sanitizer check only works on Linux & OSX (gcc & llvm).
+option(FLATBUFFERS_CODE_SANITIZE
+      "Add '-fsanitize' flags to 'flattests' and 'flatc' targets."
+      OFF)
+option(FLATBUFFERS_PACKAGE_REDHAT
+       "Build an rpm using the 'package' target."
+       OFF)
+option(FLATBUFFERS_PACKAGE_DEBIAN
+       "Build an deb using the 'package' target."
+       OFF)
+option(FLATBUFFERS_BUILD_CPP17
+       "Enable the build of c++17 test target. \"
+       Requirements: Clang6, GCC7, MSVC2017 (_MSC_VER >= 1914)  or higher."
+       OFF)
+option(FLATBUFFERS_BUILD_LEGACY
+       "Run C++ code generator with '--cpp-std c++0x' switch."
+       OFF)
+option(FLATBUFFERS_ENABLE_PCH
+       "Enable precompile headers support for 'flatbuffers' and 'flatc'. \"
+        Only work if CMake supports 'target_precompile_headers'. \"
+        This can speed up compilation time."
+       OFF)
+option(FLATBUFFERS_SKIP_MONSTER_EXTRA 
+      "Skip generating monster_extra.fbs that contains non-supported numerical\"
+      types." OFF)
+option(FLATBUFFERS_OSX_BUILD_UNIVERSAL
+      "Enable the build for multiple architectures on OS X (arm64, x86_64)."
+      ON)
+
+if(NOT FLATBUFFERS_BUILD_FLATC AND FLATBUFFERS_BUILD_TESTS)
+    message(WARNING
+    "Cannot build tests without building the compiler. Tests will be disabled.")
+    set(FLATBUFFERS_BUILD_TESTS OFF)
+endif()
+
+if(DEFINED FLATBUFFERS_MAX_PARSING_DEPTH)
+  # Override the default recursion depth limit.
+  add_definitions(-DFLATBUFFERS_MAX_PARSING_DEPTH=${FLATBUFFERS_MAX_PARSING_DEPTH})
+  message(STATUS "FLATBUFFERS_MAX_PARSING_DEPTH: ${FLATBUFFERS_MAX_PARSING_DEPTH}")
+endif()
+
+# Auto-detect locale-narrow 'strtod_l' and  'strtoull_l' functions.
+if(NOT DEFINED FLATBUFFERS_LOCALE_INDEPENDENT)
+  include(CheckCXXSymbolExists)
+
+  set(FLATBUFFERS_LOCALE_INDEPENDENT 0)
+  if(MSVC)
+    check_cxx_symbol_exists(_strtof_l stdlib.h FLATBUFFERS_HAS_STRTOF_L)
+    check_cxx_symbol_exists(_strtoui64_l stdlib.h FLATBUFFERS_HAS_STRTOULL_L)
+  else()
+    check_cxx_symbol_exists(strtof_l stdlib.h FLATBUFFERS_HAS_STRTOF_L)
+    check_cxx_symbol_exists(strtoull_l stdlib.h FLATBUFFERS_HAS_STRTOULL_L)
+  endif()
+  if(FLATBUFFERS_HAS_STRTOF_L AND FLATBUFFERS_HAS_STRTOULL_L)
+    set(FLATBUFFERS_LOCALE_INDEPENDENT 1)
+  endif()
+endif()
+add_definitions(-DFLATBUFFERS_LOCALE_INDEPENDENT=$<BOOL:${FLATBUFFERS_LOCALE_INDEPENDENT}>)
+
+set(FlatBuffers_Library_SRCS
+  include/flatbuffers/allocator.h
+  include/flatbuffers/array.h
+  include/flatbuffers/base.h
+  include/flatbuffers/bfbs_generator.h
+  include/flatbuffers/buffer.h
+  include/flatbuffers/buffer_ref.h
+  include/flatbuffers/default_allocator.h
+  include/flatbuffers/detached_buffer.h
+  include/flatbuffers/flatbuffer_builder.h
+  include/flatbuffers/flatbuffers.h
+  include/flatbuffers/flexbuffers.h
+  include/flatbuffers/hash.h
+  include/flatbuffers/idl.h
+  include/flatbuffers/minireflect.h
+  include/flatbuffers/reflection.h
+  include/flatbuffers/reflection_generated.h
+  include/flatbuffers/registry.h
+  include/flatbuffers/stl_emulation.h
+  include/flatbuffers/string.h
+  include/flatbuffers/struct.h
+  include/flatbuffers/table.h
+  include/flatbuffers/util.h
+  include/flatbuffers/vector.h
+  include/flatbuffers/vector_downward.h
+  include/flatbuffers/verifier.h
+  src/idl_parser.cpp
+  src/idl_gen_text.cpp
+  src/reflection.cpp
+  src/util.cpp
+)
+
+set(FlatBuffers_Compiler_SRCS
+  ${FlatBuffers_Library_SRCS}
+  src/idl_gen_cpp.cpp
+  src/idl_gen_csharp.cpp
+  src/idl_gen_dart.cpp
+  src/idl_gen_kotlin.cpp
+  src/idl_gen_go.cpp
+  src/idl_gen_java.cpp
+  src/idl_gen_ts.cpp
+  src/idl_gen_php.cpp
+  src/idl_gen_python.cpp
+  src/idl_gen_lobster.cpp
+  src/idl_gen_lua.cpp
+  src/idl_gen_rust.cpp
+  src/idl_gen_fbs.cpp
+  src/idl_gen_grpc.cpp
+  src/idl_gen_json_schema.cpp
+  src/idl_gen_swift.cpp
+  src/flatc.cpp
+  src/flatc_main.cpp
+  src/bfbs_gen.h
+  src/bfbs_gen_lua.h
+  include/flatbuffers/code_generators.h
+  src/bfbs_gen_lua.cpp
+  src/code_generators.cpp
+  grpc/src/compiler/schema_interface.h
+  grpc/src/compiler/cpp_generator.h
+  grpc/src/compiler/cpp_generator.cc
+  grpc/src/compiler/go_generator.h
+  grpc/src/compiler/go_generator.cc
+  grpc/src/compiler/java_generator.h
+  grpc/src/compiler/java_generator.cc
+  grpc/src/compiler/python_generator.h
+  grpc/src/compiler/python_generator.cc
+  grpc/src/compiler/swift_generator.h
+  grpc/src/compiler/swift_generator.cc
+  grpc/src/compiler/ts_generator.h
+  grpc/src/compiler/ts_generator.cc
+)
+
+set(FlatHash_SRCS
+  include/flatbuffers/hash.h
+  src/flathash.cpp
+)
+
+set(FlatBuffers_Tests_SRCS
+  ${FlatBuffers_Library_SRCS}
+  src/idl_gen_fbs.cpp
+  tests/test.cpp
+  tests/test_assert.h
+  tests/test_assert.cpp
+  tests/test_builder.h
+  tests/test_builder.cpp
+  tests/native_type_test_impl.h
+  tests/native_type_test_impl.cpp
+  include/flatbuffers/code_generators.h
+  src/code_generators.cpp
+  # file generate by running compiler on tests/monster_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_generated.h
+  # file generate by running compiler on namespace_test/namespace_test1.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/namespace_test/namespace_test1_generated.h
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/namespace_test/namespace_test2_generated.h
+  # file generate by running compiler on union_vector/union_vector.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/union_vector/union_vector_generated.h
+  # file generate by running compiler on tests/arrays_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/arrays_test_generated.h
+  # file generate by running compiler on tests/native_type_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/native_type_test_generated.h
+  # file generate by running compiler on tests/monster_extra.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_extra_generated.h
+  # file generate by running compiler on tests/monster_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_bfbs_generated.h
+  # file generate by running compiler on tests/optional_scalars.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/optional_scalars_generated.h
+)
+
+set(FlatBuffers_Tests_CPP17_SRCS
+  ${FlatBuffers_Library_SRCS}
+  tests/test_assert.h
+  tests/test_assert.cpp
+  tests/cpp17/test_cpp17.cpp
+  # file generate by running compiler on tests/monster_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/cpp17/generated_cpp17/monster_test_generated.h
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_generated.h
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/cpp17/generated_cpp17/optional_scalars_generated.h
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/optional_scalars_generated.h
+)
+
+set(FlatBuffers_Sample_Binary_SRCS
+  include/flatbuffers/flatbuffers.h
+  samples/sample_binary.cpp
+  # file generated by running compiler on samples/monster.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/samples/monster_generated.h
+)
+
+set(FlatBuffers_Sample_Text_SRCS
+  ${FlatBuffers_Library_SRCS}
+  samples/sample_text.cpp
+  # file generated by running compiler on samples/monster.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/samples/monster_generated.h
+)
+
+set(FlatBuffers_Sample_BFBS_SRCS
+  ${FlatBuffers_Library_SRCS}
+  samples/sample_bfbs.cpp
+  # file generated by running compiler on samples/monster.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/samples/monster_generated.h
+)
+
+set(FlatBuffers_GRPCTest_SRCS
+  include/flatbuffers/flatbuffers.h
+  include/flatbuffers/grpc.h
+  include/flatbuffers/util.h
+  src/util.cpp
+  tests/monster_test.grpc.fb.h
+  tests/test_assert.h
+  tests/test_builder.h
+  tests/monster_test.grpc.fb.cc
+  tests/test_assert.cpp
+  tests/test_builder.cpp
+  grpc/tests/grpctest.cpp
+  grpc/tests/message_builder_test.cpp
+  # file generate by running compiler on tests/monster_test.fbs
+  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_generated.h
+)
+
+# source_group(Compiler FILES ${FlatBuffers_Compiler_SRCS})
+# source_group(Tests FILES ${FlatBuffers_Tests_SRCS})
+
+if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
+  # do not apply any global settings if the toolchain
+  # is being configured externally
+  message(STATUS "Using toolchain file: ${CMAKE_TOOLCHAIN_FILE}.")
+elseif(CMAKE_COMPILER_IS_GNUCXX)
+  if(CYGWIN)
+    set(CMAKE_CXX_FLAGS
+      "${CMAKE_CXX_FLAGS} -std=gnu++11")
+  else(CYGWIN)
+    set(CMAKE_CXX_FLAGS
+      "${CMAKE_CXX_FLAGS} -std=c++0x")
+  endif(CYGWIN)
+  set(CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS} -Wall -pedantic -Werror -Wextra -Werror=shadow")
+  set(FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wold-style-cast")
+  if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.4)
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0)
+      set(CMAKE_CXX_FLAGS
+        "${CMAKE_CXX_FLAGS} -faligned-new -Werror=implicit-fallthrough=2")
+    endif()
+    set(CMAKE_CXX_FLAGS
+      "${CMAKE_CXX_FLAGS} -Wunused-result -Werror=unused-result -Wunused-parameter -Werror=unused-parameter")
+  endif()
+
+  # Certain platforms such as ARM do not use signed chars by default
+  # which causes issues with certain bounds checks.
+  set(CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS} -fsigned-char")
+
+# MSVC **MUST** come before the Clang check, as clang-cl is flagged by CMake as "MSVC", but it still textually 
+# matches as Clang in its Compiler Id :)
+# Note: in CMake >= 3.14 we can check CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "GNU" or "MSVC" to differentiate...
+elseif(MSVC)
+  # Visual Studio pedantic build settings
+  # warning C4512: assignment operator could not be generated
+  # warning C4316: object allocated on the heap may not be aligned
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4 /WX /wd4512 /wd4316")
+
+  if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /D_CRT_SECURE_NO_WARNINGS")
+  endif()
+
+elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
+  if(APPLE)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+
+    if(FLATBUFFERS_OSX_BUILD_UNIVERSAL)
+      set(CMAKE_OSX_ARCHITECTURES "arm64;x86_64")
+    endif()
+  else()
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
+  endif()
+
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pedantic -Werror -Wextra -Wno-unused-parameter")
+  set(FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wold-style-cast")
+  if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.8)
+    list(APPEND FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wimplicit-fallthrough" "-Wextra-semi" "-Werror=unused-private-field") # enable warning
+  endif()
+  if(FLATBUFFERS_LIBCXX_WITH_CLANG)
+    if(NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
+      set(CMAKE_CXX_FLAGS
+          "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+    endif()
+    if(NOT ("${CMAKE_SYSTEM_NAME}" MATCHES "FreeBSD" OR
+            "${CMAKE_SYSTEM_NAME}" MATCHES "Linux"))
+      set(CMAKE_EXE_LINKER_FLAGS
+          "${CMAKE_EXE_LINKER_FLAGS} -lc++abi")
+    endif()
+  endif()
+
+  # Certain platforms such as ARM do not use signed chars by default
+  # which causes issues with certain bounds checks.
+  set(CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS} -fsigned-char")
+
+endif()
+
+# Append FLATBUFFERS_CXX_FLAGS to CMAKE_CXX_FLAGS.
+if(DEFINED FLATBUFFERS_CXX_FLAGS AND NOT EXISTS "${CMAKE_TOOLCHAIN_FILE}")
+  message(STATUS "extend CXX_FLAGS with ${FLATBUFFERS_CXX_FLAGS}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLATBUFFERS_CXX_FLAGS}")
+endif()
+message(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
+
+if(FLATBUFFERS_CODE_COVERAGE)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -fprofile-arcs -ftest-coverage")
+  set(CMAKE_EXE_LINKER_FLAGS
+      "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
+endif()
+
+function(add_fsanitize_to_target _target _sanitizer)
+  if(WIN32)
+    target_compile_definitions(${_target} PRIVATE FLATBUFFERS_MEMORY_LEAK_TRACKING)
+    message(STATUS "Sanitizer MSVC::_CrtDumpMemoryLeaks added to ${_target}")
+  else()
+    # FLATBUFFERS_CODE_SANITIZE: boolean {ON,OFF,YES,NO} or string with list of sanitizer.
+    # List of sanitizer is string starts with '=': "=address,undefined,thread,memory".
+    if((${CMAKE_CXX_COMPILER_ID} MATCHES "Clang") OR
+      ((${CMAKE_CXX_COMPILER_ID} MATCHES "GNU") AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.9"))
+    )
+      set(_sanitizer_flags "=address,undefined")
+      if(_sanitizer MATCHES "=.*")
+        # override default by user-defined sanitizer list
+        set(_sanitizer_flags ${_sanitizer})
+      endif()
+      target_compile_options(${_target} PRIVATE
+        -g -fsigned-char -fno-omit-frame-pointer
+        "-fsanitize${_sanitizer_flags}")
+      target_link_libraries(${_target} PRIVATE
+        "-fsanitize${_sanitizer_flags}")
+      set_property(TARGET ${_target} PROPERTY POSITION_INDEPENDENT_CODE ON)
+      message(STATUS "Sanitizer ${_sanitizer_flags} added to ${_target}")
+    endif()
+  endif()
+endfunction()
+
+function(add_pch_to_target _target _pch_header)
+  if(COMMAND target_precompile_headers)
+    target_precompile_headers(${_target} PRIVATE ${_pch_header})
+    if(NOT MSVC)
+      set_source_files_properties(src/util.cpp PROPERTIES SKIP_PRECOMPILE_HEADERS ON)
+    endif()
+  endif()
+endfunction()
+
+if(BIICODE)
+  include(biicode/cmake/biicode.cmake)
+  return()
+endif()
+
+include_directories(include)
+include_directories(grpc)
+
+if(FLATBUFFERS_BUILD_FLATLIB)
+  add_library(flatbuffers STATIC ${FlatBuffers_Library_SRCS})
+  # Attach header directory for when build via add_subdirectory().
+  target_include_directories(flatbuffers INTERFACE
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
+  target_compile_options(flatbuffers PRIVATE "${FLATBUFFERS_PRIVATE_CXX_FLAGS}")
+  if(FLATBUFFERS_ENABLE_PCH)
+    add_pch_to_target(flatbuffers include/flatbuffers/pch/pch.h)
+  endif()
+endif()
+
+if(FLATBUFFERS_BUILD_FLATC)
+  add_executable(flatc ${FlatBuffers_Compiler_SRCS})
+  if(FLATBUFFERS_ENABLE_PCH)
+    add_pch_to_target(flatc include/flatbuffers/pch/flatc_pch.h)
+  endif()
+  target_compile_options(flatc PRIVATE "${FLATBUFFERS_PRIVATE_CXX_FLAGS}")
+  if(FLATBUFFERS_CODE_SANITIZE AND NOT WIN32)
+    add_fsanitize_to_target(flatc ${FLATBUFFERS_CODE_SANITIZE})
+  endif()
+  if(NOT FLATBUFFERS_FLATC_EXECUTABLE)
+    set(FLATBUFFERS_FLATC_EXECUTABLE $<TARGET_FILE:flatc>)
+  endif()
+  if(MSVC)
+    # Make flatc.exe not depend on runtime dlls for easy distribution.
+    target_compile_options(flatc PUBLIC $<$<CONFIG:Release>:/MT>)
+  endif()
+  if(FLATBUFFERS_STATIC_FLATC AND NOT MSVC)
+    target_link_libraries(flatc PRIVATE -static)
+  endif()
+endif()
+
+if(FLATBUFFERS_BUILD_FLATHASH)
+  add_executable(flathash ${FlatHash_SRCS})
+endif()
+
+if(FLATBUFFERS_BUILD_SHAREDLIB)
+  add_library(flatbuffers_shared SHARED ${FlatBuffers_Library_SRCS})
+
+  # Shared object version: "major.minor.micro"
+  # - micro updated every release when there is no API/ABI changes
+  # - minor updated when there are additions in API/ABI
+  # - major (ABI number) updated when there are changes in ABI (or removals)
+  set(FlatBuffers_Library_SONAME_MAJOR ${VERSION_MAJOR})
+  set(FlatBuffers_Library_SONAME_FULL "${FlatBuffers_Library_SONAME_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
+  set_target_properties(flatbuffers_shared PROPERTIES OUTPUT_NAME flatbuffers
+                        SOVERSION "${FlatBuffers_Library_SONAME_MAJOR}"
+                        VERSION "${FlatBuffers_Library_SONAME_FULL}")
+  if(FLATBUFFERS_ENABLE_PCH)
+    add_pch_to_target(flatbuffers_shared include/flatbuffers/pch/pch.h)
+  endif()
+endif()
+
+# Global list of generated files.
+# Use the global property to be independent of PARENT_SCOPE.
+set_property(GLOBAL PROPERTY FBS_GENERATED_OUTPUTS)
+
+function(get_generated_output generated_files)
+  get_property(tmp GLOBAL PROPERTY FBS_GENERATED_OUTPUTS)
+  set(${generated_files} ${tmp} PARENT_SCOPE)
+endfunction(get_generated_output)
+
+function(register_generated_output file_name)
+  get_property(tmp GLOBAL PROPERTY FBS_GENERATED_OUTPUTS)
+  list(APPEND tmp ${file_name})
+  set_property(GLOBAL PROPERTY FBS_GENERATED_OUTPUTS ${tmp})
+endfunction(register_generated_output)
+
+function(compile_flatbuffers_schema_to_cpp_opt SRC_FBS OPT)
+  if(FLATBUFFERS_BUILD_LEGACY)
+    set(OPT ${OPT};--cpp-std c++0x)
+  else()
+    # --cpp-std is defined by flatc default settings.
+  endif()
+  message(STATUS "`${SRC_FBS}`: add generation of C++ code with '${OPT}'")
+  get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
+  string(REGEX REPLACE "\\.fbs$" "_generated.h" GEN_HEADER ${SRC_FBS})
+  add_custom_command(
+    OUTPUT ${GEN_HEADER}
+    COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
+            --cpp --gen-mutable --gen-object-api --reflect-names
+            --cpp-ptr-type flatbuffers::unique_ptr # Used to test with C++98 STLs
+            ${OPT}
+            -I "${CMAKE_CURRENT_SOURCE_DIR}/tests/include_test"
+            -o "${SRC_FBS_DIR}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
+    DEPENDS flatc
+    COMMENT "Run generation: '${GEN_HEADER}'")
+  register_generated_output(${GEN_HEADER})
+endfunction()
+
+function(compile_flatbuffers_schema_to_cpp SRC_FBS)
+  compile_flatbuffers_schema_to_cpp_opt(${SRC_FBS} "--no-includes;--gen-compare")
+endfunction()
+
+function(compile_flatbuffers_schema_to_binary SRC_FBS)
+  message(STATUS "`${SRC_FBS}`: add generation of binary (.bfbs) schema")
+  get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
+  string(REGEX REPLACE "\\.fbs$" ".bfbs" GEN_BINARY_SCHEMA ${SRC_FBS})
+  # For details about flags see generate_code.py
+  add_custom_command(
+    OUTPUT ${GEN_BINARY_SCHEMA}
+    COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
+            -b --schema --bfbs-comments --bfbs-builtins
+            --bfbs-filenames ${SRC_FBS_DIR}
+            -I "${CMAKE_CURRENT_SOURCE_DIR}/tests/include_test"
+            -o "${SRC_FBS_DIR}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
+    DEPENDS flatc
+    COMMENT "Run generation: '${GEN_BINARY_SCHEMA}'")
+  register_generated_output(${GEN_BINARY_SCHEMA})
+endfunction()
+
+function(compile_flatbuffers_schema_to_embedded_binary SRC_FBS OPT)
+  if(FLATBUFFERS_BUILD_LEGACY)
+    set(OPT ${OPT};--cpp-std c++0x)
+  else()
+    # --cpp-std is defined by flatc default settings.
+  endif()
+  message(STATUS "`${SRC_FBS}`: add generation of C++ embedded binary schema code with '${OPT}'")
+  get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
+  string(REGEX REPLACE "\\.fbs$" "_bfbs_generated.h" GEN_BFBS_HEADER ${SRC_FBS})
+  # For details about flags see generate_code.py
+  add_custom_command(
+          OUTPUT ${GEN_BFBS_HEADER}
+          COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
+          --cpp --gen-mutable --gen-object-api --reflect-names
+          --cpp-ptr-type flatbuffers::unique_ptr # Used to test with C++98 STLs
+          ${OPT}
+          --bfbs-comments --bfbs-builtins --bfbs-gen-embed
+          --bfbs-filenames ${SRC_FBS_DIR}
+          -I "${CMAKE_CURRENT_SOURCE_DIR}/tests/include_test"
+          -o "${SRC_FBS_DIR}"
+          "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
+          DEPENDS flatc
+          COMMENT "Run generation: '${GEN_BFBS_HEADER}'")
+  register_generated_output(${GEN_BFBS_HEADER})
+endfunction()
+
+# Look if we have python 3.5 installed so that we can run the generate code
+# python script after flatc is built.
+find_package(PythonInterp 3.5)
+
+if(PYTHONINTERP_FOUND AND
+  # Skip doing this if the MSVC version is below VS 12.
+  # https://cmake.org/cmake/help/latest/variable/MSVC_VERSION.html
+  (NOT MSVC OR MSVC_VERSION GREATER 1800))
+  set(GENERATION_SCRIPT ${PYTHON_EXECUTABLE} scripts/generate_code.py) 
+  if(FLATBUFFERS_BUILD_LEGACY)
+    # Need to set --cpp-std c++-0x options
+    set(GENERATION_SCRIPT ${GENERATION_SCRIPT} --cpp-0x)
+  endif()
+  if(FLATBUFFERS_SKIP_MONSTER_EXTRA)
+    set(GENERATION_SCRIPT ${GENERATION_SCRIPT} --skip-monster-extra)
+  endif()
+  add_custom_command(
+    TARGET flatc
+    POST_BUILD
+    COMMAND ${GENERATION_SCRIPT} --flatc "${FLATBUFFERS_FLATC_EXECUTABLE}"
+    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+    COMMENT "Running ${GENERATION_SCRIPT}..."
+    VERBATIM)
+else()
+  message("No Python3 interpreter found! Unable to generate files automatically.")
+endif()
+
+if(FLATBUFFERS_BUILD_TESTS)
+  file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/tests" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/samples" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+
+  # TODO Add (monster_test.fbs monsterdata_test.json)->monsterdata_test.mon
+  compile_flatbuffers_schema_to_cpp(tests/monster_test.fbs)
+  compile_flatbuffers_schema_to_binary(tests/monster_test.fbs)
+  compile_flatbuffers_schema_to_cpp_opt(tests/namespace_test/namespace_test1.fbs "--no-includes;--gen-compare;--gen-name-strings")
+  compile_flatbuffers_schema_to_cpp_opt(tests/namespace_test/namespace_test2.fbs "--no-includes;--gen-compare;--gen-name-strings")
+  compile_flatbuffers_schema_to_cpp_opt(tests/union_vector/union_vector.fbs "--no-includes;--gen-compare;--gen-name-strings")
+  compile_flatbuffers_schema_to_cpp(tests/optional_scalars.fbs)
+  compile_flatbuffers_schema_to_cpp_opt(tests/native_type_test.fbs "")
+  compile_flatbuffers_schema_to_cpp_opt(tests/arrays_test.fbs "--scoped-enums;--gen-compare")
+  compile_flatbuffers_schema_to_binary(tests/arrays_test.fbs)
+  compile_flatbuffers_schema_to_embedded_binary(tests/monster_test.fbs "--no-includes;--gen-compare")
+  if(NOT (MSVC AND (MSVC_VERSION LESS 1900)))
+    compile_flatbuffers_schema_to_cpp(tests/monster_extra.fbs) # Test floating-point NAN/INF.
+  endif()
+  include_directories(${CMAKE_CURRENT_BINARY_DIR}/tests)
+  add_executable(flattests ${FlatBuffers_Tests_SRCS})
+  add_dependencies(flattests generated_code)
+  set_property(TARGET flattests
+    PROPERTY COMPILE_DEFINITIONS FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE
+    FLATBUFFERS_DEBUG_VERIFICATION_FAILURE=1)
+  if(FLATBUFFERS_CODE_SANITIZE)
+    add_fsanitize_to_target(flattests ${FLATBUFFERS_CODE_SANITIZE})
+  endif()
+
+  compile_flatbuffers_schema_to_cpp(samples/monster.fbs)
+  compile_flatbuffers_schema_to_binary(samples/monster.fbs)
+  include_directories(${CMAKE_CURRENT_BINARY_DIR}/samples)
+  add_executable(flatsamplebinary ${FlatBuffers_Sample_Binary_SRCS})
+  add_dependencies(flatsamplebinary generated_code)
+  add_executable(flatsampletext ${FlatBuffers_Sample_Text_SRCS})
+  add_dependencies(flatsampletext generated_code)
+  add_executable(flatsamplebfbs ${FlatBuffers_Sample_BFBS_SRCS})
+  add_dependencies(flatsamplebfbs generated_code)
+
+  if(FLATBUFFERS_BUILD_CPP17)
+    # Don't generate header for flattests_cpp17 target.
+    # This target uses "generated_cpp17/monster_test_generated.h"
+    # produced by direct call of generate_code.py script.
+    add_executable(flattests_cpp17 ${FlatBuffers_Tests_CPP17_SRCS})
+    add_dependencies(flattests_cpp17 generated_code)
+    target_compile_features(flattests_cpp17 PRIVATE cxx_std_17)
+    target_compile_definitions(flattests_cpp17 PRIVATE
+      FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE
+      FLATBUFFERS_DEBUG_VERIFICATION_FAILURE=1
+    )
+    if(FLATBUFFERS_CODE_SANITIZE)
+      add_fsanitize_to_target(flattests_cpp17 ${FLATBUFFERS_CODE_SANITIZE})
+    endif()
+  endif(FLATBUFFERS_BUILD_CPP17)
+endif()
+
+if(FLATBUFFERS_BUILD_GRPCTEST)
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-parameter -Wno-shadow")
+  endif()
+  if(NOT GRPC_INSTALL_PATH)
+    message(SEND_ERROR "GRPC_INSTALL_PATH variable is not defined. See grpc/README.md")
+  endif()
+  if(NOT PROTOBUF_DOWNLOAD_PATH)
+    message(SEND_ERROR "PROTOBUF_DOWNLOAD_PATH variable is not defined. See grpc/README.md")
+  endif()
+  INCLUDE_DIRECTORIES(${GRPC_INSTALL_PATH}/include)
+  INCLUDE_DIRECTORIES(${PROTOBUF_DOWNLOAD_PATH}/src)
+  find_package(Threads REQUIRED)
+  list(APPEND CMAKE_PREFIX_PATH ${GRPC_INSTALL_PATH})
+  find_package(absl CONFIG REQUIRED)
+  find_package(protobuf CONFIG REQUIRED)
+  find_package(gRPC CONFIG REQUIRED)
+  add_executable(grpctest ${FlatBuffers_GRPCTest_SRCS})
+  add_dependencies(grpctest generated_code)
+  target_link_libraries(grpctest PRIVATE gRPC::grpc++_unsecure gRPC::grpc_unsecure gRPC::gpr pthread dl)
+  if(FLATBUFFERS_CODE_SANITIZE AND NOT WIN32)
+    # GRPC test has problems with alignment and will fail under ASAN/UBSAN.
+    # add_fsanitize_to_target(grpctest ${FLATBUFFERS_CODE_SANITIZE})
+  endif()
+endif()
+
+
+if(FLATBUFFERS_INSTALL)
+  include(GNUInstallDirs)
+
+  install(DIRECTORY include/flatbuffers DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+
+  set(FB_CMAKE_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/flatbuffers")
+
+  configure_file(CMake/FlatBuffersConfigVersion.cmake.in FlatBuffersConfigVersion.cmake @ONLY)
+  install(
+      FILES "CMake/FlatBuffersConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/FlatBuffersConfigVersion.cmake"
+      DESTINATION ${FB_CMAKE_DIR}
+  )
+
+  if(FLATBUFFERS_BUILD_FLATLIB)
+    if(CMAKE_VERSION VERSION_LESS 3.0)
+      install(
+        TARGETS flatbuffers EXPORT FlatBuffersTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      )
+    else()
+      install(
+        TARGETS flatbuffers EXPORT FlatBuffersTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+      )
+    endif()
+
+    install(EXPORT FlatBuffersTargets
+      FILE FlatBuffersTargets.cmake
+      NAMESPACE flatbuffers::
+      DESTINATION ${FB_CMAKE_DIR}
+    )
+  endif()
+
+  if(FLATBUFFERS_BUILD_FLATC)
+    install(
+      TARGETS flatc EXPORT FlatcTargets
+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    )
+
+    install(
+      EXPORT FlatcTargets
+      FILE FlatcTargets.cmake
+      NAMESPACE flatbuffers::
+      DESTINATION ${FB_CMAKE_DIR}
+    )
+  endif()
+
+  if(FLATBUFFERS_BUILD_SHAREDLIB)
+    if(CMAKE_VERSION VERSION_LESS 3.0)
+      install(
+        TARGETS flatbuffers_shared EXPORT FlatBuffersSharedTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      )
+    else()
+      install(
+        TARGETS flatbuffers_shared EXPORT FlatBuffersSharedTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+      )
+    endif()
+
+  install(
+      EXPORT FlatBuffersSharedTargets
+      FILE FlatBuffersSharedTargets.cmake
+      NAMESPACE flatbuffers::
+      DESTINATION ${FB_CMAKE_DIR}
+    )
+  endif()
+
+  if(FLATBUFFERS_BUILD_SHAREDLIB OR FLATBUFFERS_BUILD_FLATLIB)
+      configure_file(CMake/flatbuffers.pc.in flatbuffers.pc @ONLY)
+      install(
+        FILES "${CMAKE_CURRENT_BINARY_DIR}/flatbuffers.pc"
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+      )
+  endif()
+endif()
+
+if(FLATBUFFERS_BUILD_TESTS)
+  enable_testing()
+
+  add_test(NAME flattests COMMAND flattests)
+  if(FLATBUFFERS_BUILD_CPP17)
+    add_test(NAME flattests_cpp17 COMMAND flattests_cpp17)
+  endif()
+  if(FLATBUFFERS_BUILD_GRPCTEST)
+    add_test(NAME grpctest COMMAND grpctest)
+  endif()
+endif()
+
+# This target is sync-barrier.
+# Other generate-dependent targets can depend on 'generated_code' only.
+get_generated_output(fbs_generated)
+if(fbs_generated)
+  # message(STATUS "Add generated_code target with files:${fbs_generated}")
+  add_custom_target(generated_code
+    DEPENDS ${fbs_generated}
+    COMMENT "All generated files were updated.")
+endif()
+
+include(CMake/BuildFlatBuffers.cmake)
+
+if(UNIX)
+    # Use of CPack only supported on Linux systems.
+    if(FLATBUFFERS_PACKAGE_DEBIAN)
+        include(CMake/PackageDebian.cmake)
+        include(CPack)
+    endif()
+    if (FLATBUFFERS_PACKAGE_REDHAT)
+        include(CMake/PackageRedhat.cmake)
+        include(CPack)
+    endif()
+endif()
+
+# Include for running Google Benchmarks.
+if(FLATBUFFERS_BUILD_BENCHMARKS AND CMAKE_VERSION VERSION_GREATER 3.13)
+  add_subdirectory(benchmarks)
+endif()
+
+# Add FlatBuffers::FlatBuffers interface, needed for FetchContent_Declare
+add_library(FlatBuffers INTERFACE)
+add_library(FlatBuffers::FlatBuffers ALIAS FlatBuffers)
+target_include_directories(
+  FlatBuffers
+  INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>)

CMake/FlatBuffersConfig.cmake

@@ -0,0 +1,3 @@
+include("${CMAKE_CURRENT_LIST_DIR}/FlatBuffersTargets.cmake" OPTIONAL)
+include("${CMAKE_CURRENT_LIST_DIR}/FlatcTargets.cmake" OPTIONAL)
+include("${CMAKE_CURRENT_LIST_DIR}/FlatBuffersSharedTargets.cmake" OPTIONAL)

CMake/FlatbuffersConfig.cmake

@@ -1,4 +0,0 @@
-include("${CMAKE_CURRENT_LIST_DIR}/FlatbuffersTargets.cmake" OPTIONAL)
-include("${CMAKE_CURRENT_LIST_DIR}/FlatcTargets.cmake" OPTIONAL)
-include("${CMAKE_CURRENT_LIST_DIR}/FlatbuffersSharedTargets.cmake" OPTIONAL)
-

CMake/Version.cmake

@@ -1,12 +1,12 @@
 set(VERSION_MAJOR 2)
 set(VERSION_MINOR 0)
-set(VERSION_PATCH 0)
+set(VERSION_PATCH 7)
 set(VERSION_COMMIT 0)
 
 find_program(GIT git)
-if(GIT)
+if(GIT AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
   execute_process(
-      COMMAND ${GIT} describe
+      COMMAND ${GIT} describe --tags
       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
       OUTPUT_VARIABLE GIT_DESCRIBE_DIRTY
       OUTPUT_STRIP_TRAILING_WHITESPACE

CMakeLists.txt

@@ -1,9 +1,35 @@
-cmake_minimum_required(VERSION 2.8.12)
+# This is the legacy minimum version flatbuffers supported for a while.
+cmake_minimum_required(VERSION 2.8.12...3.22.1)
+
+# CMake version 3.16 is the 'de-facto' minimum version for flatbuffers. If the
+# current cmake is older than this, warn the user and include the legacy file to
+# provide some level of support.
+if(CMAKE_VERSION VERSION_LESS 3.16)
+  message(WARNING "Using cmake version ${CMAKE_VERSION} which is older than "
+  "our target version of 3.16. This will use the legacy CMakeLists.txt that "
+  "supports version 2.8.12 and higher, but not actively maintained. Consider "
+  "upgrading cmake to a newer version, as this may become a fatal error in the "
+  "future.")
+  # Use the legacy version of CMakeLists.txt
+  include(CMake/CMakeLists_legacy.cmake.in)
+  return()
+endif()
+
+# Attempt to read the current version of flatbuffers by looking at the latest tag.
+include(CMake/Version.cmake)
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+  project(FlatBuffers
+        DESCRIPTION "Flatbuffers serialization library"
+        VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}
+        LANGUAGES CXX)
+else()
+  project(FlatBuffers)
+endif (POLICY CMP0048)
+
 # generate compile_commands.json
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-include(CheckCXXSymbolExists)
-
-project(FlatBuffers)
 
 # NOTE: Code coverage only works on Linux & OSX.
 option(FLATBUFFERS_CODE_COVERAGE "Enable the code coverage build option." OFF)
@@ -16,6 +42,8 @@ option(FLATBUFFERS_BUILD_FLATC "Enable the build of the flatbuffers compiler"
 option(FLATBUFFERS_STATIC_FLATC "Build flatbuffers compiler with -static flag"
        OFF)
 option(FLATBUFFERS_BUILD_FLATHASH "Enable the build of flathash" ON)
+option(FLATBUFFERS_BUILD_BENCHMARKS "Enable the build of flatbenchmark."
+       OFF)
 option(FLATBUFFERS_BUILD_GRPCTEST "Enable the build of grpctest" OFF)
 option(FLATBUFFERS_BUILD_SHAREDLIB
        "Enable the build of the flatbuffers shared library"
@@ -43,6 +71,17 @@ option(FLATBUFFERS_ENABLE_PCH
         Only work if CMake supports 'target_precompile_headers'. \"
         This can speed up compilation time."
        OFF)
+option(FLATBUFFERS_SKIP_MONSTER_EXTRA 
+      "Skip generating monster_extra.fbs that contains non-supported numerical\"
+      types." OFF)
+option(FLATBUFFERS_STRICT_MODE 
+      "Build flatbuffers with all warnings as errors (-Werror or /WX)."
+      OFF)
+
+set(MSVC_LIKE OFF)
+if(MSVC OR CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC")
+    set(MSVC_LIKE ON)
+endif()
 
 if(NOT FLATBUFFERS_BUILD_FLATC AND FLATBUFFERS_BUILD_TESTS)
     message(WARNING
@@ -58,8 +97,10 @@ endif()
 
 # Auto-detect locale-narrow 'strtod_l' and  'strtoull_l' functions.
 if(NOT DEFINED FLATBUFFERS_LOCALE_INDEPENDENT)
+  include(CheckCXXSymbolExists)
+
   set(FLATBUFFERS_LOCALE_INDEPENDENT 0)
-  if(MSVC)
+  if(MSVC_LIKE)
     check_cxx_symbol_exists(_strtof_l stdlib.h FLATBUFFERS_HAS_STRTOF_L)
     check_cxx_symbol_exists(_strtoui64_l stdlib.h FLATBUFFERS_HAS_STRTOULL_L)
   else()
@@ -73,17 +114,32 @@ endif()
 add_definitions(-DFLATBUFFERS_LOCALE_INDEPENDENT=$<BOOL:${FLATBUFFERS_LOCALE_INDEPENDENT}>)
 
 set(FlatBuffers_Library_SRCS
+  include/flatbuffers/allocator.h
+  include/flatbuffers/array.h
   include/flatbuffers/base.h
+  include/flatbuffers/bfbs_generator.h
+  include/flatbuffers/buffer.h
+  include/flatbuffers/buffer_ref.h
+  include/flatbuffers/default_allocator.h
+  include/flatbuffers/detached_buffer.h
+  include/flatbuffers/flatbuffer_builder.h
   include/flatbuffers/flatbuffers.h
+  include/flatbuffers/flexbuffers.h
+  include/flatbuffers/flex_flat_util.h
   include/flatbuffers/hash.h
   include/flatbuffers/idl.h
-  include/flatbuffers/util.h
+  include/flatbuffers/minireflect.h
   include/flatbuffers/reflection.h
   include/flatbuffers/reflection_generated.h
-  include/flatbuffers/stl_emulation.h
-  include/flatbuffers/flexbuffers.h
   include/flatbuffers/registry.h
-  include/flatbuffers/minireflect.h
+  include/flatbuffers/stl_emulation.h
+  include/flatbuffers/string.h
+  include/flatbuffers/struct.h
+  include/flatbuffers/table.h
+  include/flatbuffers/util.h
+  include/flatbuffers/vector.h
+  include/flatbuffers/vector_downward.h
+  include/flatbuffers/verifier.h
   src/idl_parser.cpp
   src/idl_gen_text.cpp
   src/reflection.cpp
@@ -108,9 +164,19 @@ set(FlatBuffers_Compiler_SRCS
   src/idl_gen_grpc.cpp
   src/idl_gen_json_schema.cpp
   src/idl_gen_swift.cpp
+  src/idl_namer.h
+  src/namer.h
   src/flatc.cpp
   src/flatc_main.cpp
+  src/bfbs_gen.h
+  src/bfbs_gen_lua.h
+  src/bfbs_namer.h
   include/flatbuffers/code_generators.h
+  src/binary_annotator.h
+  src/binary_annotator.cpp
+  src/annotated_binary_text_gen.h
+  src/annotated_binary_text_gen.cpp
+  src/bfbs_gen_lua.cpp
   src/code_generators.cpp
   grpc/src/compiler/schema_interface.h
   grpc/src/compiler/cpp_generator.h
@@ -213,76 +279,8 @@ set(FlatBuffers_GRPCTest_SRCS
   ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_generated.h
 )
 
-# source_group(Compiler FILES ${FlatBuffers_Compiler_SRCS})
+# TODO(dbaileychess): Figure out how this would now work. I posted a question on
-# source_group(Tests FILES ${FlatBuffers_Tests_SRCS})
+# https://stackoverflow.com/questions/71772330/override-target-compile-options-via-cmake-command-line.
-
-if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
-  # do not apply any global settings if the toolchain
-  # is being configured externally
-  message(STATUS "Using toolchain file: ${CMAKE_TOOLCHAIN_FILE}.")
-elseif(APPLE)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pedantic -Werror -Wextra -Wno-unused-parameter")
-  set(FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wold-style-cast")
-elseif(CMAKE_COMPILER_IS_GNUCXX)
-  if(CYGWIN)
-    set(CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -std=gnu++11")
-  else(CYGWIN)
-    set(CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -std=c++0x")
-  endif(CYGWIN)
-  set(CMAKE_CXX_FLAGS
-    "${CMAKE_CXX_FLAGS} -Wall -pedantic -Werror -Wextra -Werror=shadow")
-  set(FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wold-style-cast")
-  if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.4)
-    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0)
-      set(CMAKE_CXX_FLAGS
-        "${CMAKE_CXX_FLAGS} -faligned-new -Werror=implicit-fallthrough=2")
-    endif()
-    set(CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -Wunused-result -Werror=unused-result -Wunused-parameter -Werror=unused-parameter")
-  endif()
-
-  # Certain platforms such as ARM do not use signed chars by default
-  # which causes issues with certain bounds checks.
-  set(CMAKE_CXX_FLAGS
-    "${CMAKE_CXX_FLAGS} -fsigned-char")
-
-elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
-  set(CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -std=c++0x -Wall -pedantic -Werror -Wextra -Wno-unused-parameter")
-  set(FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wold-style-cast")
-  if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.8)
-    list(APPEND FLATBUFFERS_PRIVATE_CXX_FLAGS "-Wimplicit-fallthrough" "-Wextra-semi" "-Werror=unused-private-field") # enable warning
-  endif()
-  if(FLATBUFFERS_LIBCXX_WITH_CLANG)
-    if(NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
-      set(CMAKE_CXX_FLAGS
-          "${CMAKE_CXX_FLAGS} -stdlib=libc++")
-    endif()
-    if(NOT ("${CMAKE_SYSTEM_NAME}" MATCHES "FreeBSD" OR
-            "${CMAKE_SYSTEM_NAME}" MATCHES "Linux"))
-      set(CMAKE_EXE_LINKER_FLAGS
-          "${CMAKE_EXE_LINKER_FLAGS} -lc++abi")
-    endif()
-  endif()
-
-  # Certain platforms such as ARM do not use signed chars by default
-  # which causes issues with certain bounds checks.
-  set(CMAKE_CXX_FLAGS
-    "${CMAKE_CXX_FLAGS} -fsigned-char")
-
-elseif(MSVC)
-  # Visual Studio pedantic build settings
-  # warning C4512: assignment operator could not be generated
-  # warning C4316: object allocated on the heap may not be aligned
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4 /WX /wd4512 /wd4316")
-
-  # multi-core build.
-  add_definitions("/MP")
-endif()
-
 # Append FLATBUFFERS_CXX_FLAGS to CMAKE_CXX_FLAGS.
 if(DEFINED FLATBUFFERS_CXX_FLAGS AND NOT EXISTS "${CMAKE_TOOLCHAIN_FILE}")
   message(STATUS "extend CXX_FLAGS with ${FLATBUFFERS_CXX_FLAGS}")
@@ -290,12 +288,6 @@ if(DEFINED FLATBUFFERS_CXX_FLAGS AND NOT EXISTS "${CMAKE_TOOLCHAIN_FILE}")
 endif()
 message(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
 
-if(FLATBUFFERS_CODE_COVERAGE)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -fprofile-arcs -ftest-coverage")
-  set(CMAKE_EXE_LINKER_FLAGS
-      "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
-endif()
-
 function(add_fsanitize_to_target _target _sanitizer)
   if(WIN32)
     target_compile_definitions(${_target} PRIVATE FLATBUFFERS_MEMORY_LEAK_TRACKING)
@@ -331,20 +323,119 @@ function(add_pch_to_target _target _pch_header)
   endif()
 endfunction()
 
-if(BIICODE)
-  include(biicode/cmake/biicode.cmake)
-  return()
-endif()
-
 include_directories(include)
 include_directories(grpc)
 
+# Creates an interface library that stores the configuration settings that each
+# target links too. This is a compromise between setting configuration globally
+# with add_compile_options() and the more targetted target_compile_options(). 
+# This way each target in this file can share settings and override them if 
+# needed.
+add_library(ProjectConfig INTERFACE)
+target_compile_features(ProjectConfig
+  INTERFACE
+    cxx_std_11
+)
+
+# Force the standard to be met.
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# We shouldn't rely on any compiler-extensions to make things work.
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+if(MSVC_LIKE)
+  target_compile_options(ProjectConfig
+    INTERFACE 
+      /W4
+      $<$<BOOL:${FLATBUFFERS_STRICT_MODE}>:
+        /WX       # Treat all compiler warnings as errors
+      >
+      /wd4512   # C4512: assignment operator could not be generated
+      /wd4316   # C4316: object allocated on the heap may not be aligned
+      /wd4456   # C4456: hides previous local declaration
+      $<$<CXX_COMPILER_ID:Clang>:
+        /D_CRT_SECURE_NO_WARNINGS
+      >
+  )
+else()
+  target_compile_options(ProjectConfig
+    INTERFACE
+      -Wall
+      -Wno-unknown-warning-option
+      $<$<BOOL:${FLATBUFFERS_STRICT_MODE}>:
+        -Werror   # Treat all compiler warnings as errors
+
+        # False positive string overflow
+        # https://github.com/google/flatbuffers/issues/7366
+        -Wno-error=stringop-overflow
+      >
+      -pedantic 
+      -Wextra 
+      -Wno-unused-parameter
+      -Wold-style-cast
+      -Wimplicit-fallthrough
+      -fsigned-char
+      -Wnon-virtual-dtor
+
+      $<$<CXX_COMPILER_ID:CLANG>:
+        -Wmissing-declarations
+        -Wzero-as-null-pointer-constant
+        $<$<VERSION_GREATER:$<CXX_COMPILER_VERSION>,3.8>:
+          -Wimplicit-fallthrough
+          -Wextra-semi
+          $<$<BOOL:${FLATBUFFERS_STRICT_MODE}>:            
+            -Werror=unused-private-field
+          >
+        >
+      >
+
+      $<$<CXX_COMPILER_ID:GNU>:
+        $<$<VERSION_GREATER:$<CXX_COMPILER_VERSION>,4.4>:
+          -Wunused-result
+          -Wunused-parameter 
+          -Werror=unused-parameter
+          -Wmissing-declarations
+        >
+        $<$<VERSION_GREATER:$<CXX_COMPILER_VERSION>,4.7>:
+          -Wzero-as-null-pointer-constant
+        >
+        $<$<VERSION_GREATER:$<CXX_COMPILER_VERSION>,7.0>:
+          -faligned-new 
+          $<$<BOOL:${FLATBUFFERS_STRICT_MODE}>:
+            -Werror=implicit-fallthrough=2
+          >
+        >
+        $<$<VERSION_GREATER:$<CXX_COMPILER_VERSION>,8.0>:
+          -Wextra-semi
+        >
+      >
+
+      $<$<BOOL:${FLATBUFFERS_CODE_COVERAGE}>:
+        -g
+        -fprofile-arcs
+        -ftest-coverage
+      >
+    )
+
+  if(FLATBUFFERS_CODE_COVERAGE)
+    target_link_options(ProjectConfig
+      INTERFACE
+        -fprofile-arcs
+        -ftest-coverage
+    )
+  endif()
+endif()
+
 if(FLATBUFFERS_BUILD_FLATLIB)
   add_library(flatbuffers STATIC ${FlatBuffers_Library_SRCS})
+
   # Attach header directory for when build via add_subdirectory().
-  target_include_directories(flatbuffers INTERFACE
+  target_include_directories(flatbuffers 
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
+    INTERFACE
-  target_compile_options(flatbuffers PRIVATE "${FLATBUFFERS_PRIVATE_CXX_FLAGS}")
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  )
+  target_link_libraries(flatbuffers PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
+
   if(FLATBUFFERS_ENABLE_PCH)
     add_pch_to_target(flatbuffers include/flatbuffers/pch/pch.h)
   endif()
@@ -355,17 +446,21 @@ if(FLATBUFFERS_BUILD_FLATC)
   if(FLATBUFFERS_ENABLE_PCH)
     add_pch_to_target(flatc include/flatbuffers/pch/flatc_pch.h)
   endif()
-  target_compile_options(flatc PRIVATE "${FLATBUFFERS_PRIVATE_CXX_FLAGS}")
+
+  target_link_libraries(flatc PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
+  target_compile_options(flatc 
+    PUBLIC
+      $<$<AND:$<BOOL:${MSVC_LIKE}>,$<CONFIG:Release>>:
+        /MT
+      >
+  )
+
   if(FLATBUFFERS_CODE_SANITIZE AND NOT WIN32)
     add_fsanitize_to_target(flatc ${FLATBUFFERS_CODE_SANITIZE})
   endif()
   if(NOT FLATBUFFERS_FLATC_EXECUTABLE)
     set(FLATBUFFERS_FLATC_EXECUTABLE $<TARGET_FILE:flatc>)
   endif()
-  if(MSVC)
-    # Make flatc.exe not depend on runtime dlls for easy distribution.
-    target_compile_options(flatc PUBLIC $<$<CONFIG:Release>:/MT>)
-  endif()
   if(FLATBUFFERS_STATIC_FLATC AND NOT MSVC)
     target_link_libraries(flatc PRIVATE -static)
   endif()
@@ -373,17 +468,18 @@ endif()
 
 if(FLATBUFFERS_BUILD_FLATHASH)
   add_executable(flathash ${FlatHash_SRCS})
+  target_link_libraries(flathash PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
 endif()
 
 if(FLATBUFFERS_BUILD_SHAREDLIB)
   add_library(flatbuffers_shared SHARED ${FlatBuffers_Library_SRCS})
-
+  target_link_libraries(flatbuffers_shared PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
   # Shared object version: "major.minor.micro"
   # - micro updated every release when there is no API/ABI changes
   # - minor updated when there are additions in API/ABI
   # - major (ABI number) updated when there are changes in ABI (or removals)
-  set(FlatBuffers_Library_SONAME_MAJOR "2")
+  set(FlatBuffers_Library_SONAME_MAJOR ${VERSION_MAJOR})
-  set(FlatBuffers_Library_SONAME_FULL "${FlatBuffers_Library_SONAME_MAJOR}.0.0")
+  set(FlatBuffers_Library_SONAME_FULL "${FlatBuffers_Library_SONAME_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
   set_target_properties(flatbuffers_shared PROPERTIES OUTPUT_NAME flatbuffers
                         SOVERSION "${FlatBuffers_Library_SONAME_MAJOR}"
                         VERSION "${FlatBuffers_Library_SONAME_FULL}")
@@ -438,11 +534,12 @@ function(compile_flatbuffers_schema_to_binary SRC_FBS)
   message(STATUS "`${SRC_FBS}`: add generation of binary (.bfbs) schema")
   get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
   string(REGEX REPLACE "\\.fbs$" ".bfbs" GEN_BINARY_SCHEMA ${SRC_FBS})
-  # For details about flags see generate_code.bat(sh)
+  # For details about flags see generate_code.py
   add_custom_command(
     OUTPUT ${GEN_BINARY_SCHEMA}
     COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
             -b --schema --bfbs-comments --bfbs-builtins
+            --bfbs-filenames ${SRC_FBS_DIR}
             -I "${CMAKE_CURRENT_SOURCE_DIR}/tests/include_test"
             -o "${SRC_FBS_DIR}"
             "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
@@ -460,7 +557,7 @@ function(compile_flatbuffers_schema_to_embedded_binary SRC_FBS OPT)
   message(STATUS "`${SRC_FBS}`: add generation of C++ embedded binary schema code with '${OPT}'")
   get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
   string(REGEX REPLACE "\\.fbs$" "_bfbs_generated.h" GEN_BFBS_HEADER ${SRC_FBS})
-  # For details about flags see generate_code.bat(sh)
+  # For details about flags see generate_code.py
   add_custom_command(
           OUTPUT ${GEN_BFBS_HEADER}
           COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
@@ -468,6 +565,7 @@ function(compile_flatbuffers_schema_to_embedded_binary SRC_FBS OPT)
           --cpp-ptr-type flatbuffers::unique_ptr # Used to test with C++98 STLs
           ${OPT}
           --bfbs-comments --bfbs-builtins --bfbs-gen-embed
+          --bfbs-filenames ${SRC_FBS_DIR}
           -I "${CMAKE_CURRENT_SOURCE_DIR}/tests/include_test"
           -o "${SRC_FBS_DIR}"
           "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
@@ -483,9 +581,9 @@ if(FLATBUFFERS_BUILD_TESTS)
   # TODO Add (monster_test.fbs monsterdata_test.json)->monsterdata_test.mon
   compile_flatbuffers_schema_to_cpp(tests/monster_test.fbs)
   compile_flatbuffers_schema_to_binary(tests/monster_test.fbs)
-  compile_flatbuffers_schema_to_cpp(tests/namespace_test/namespace_test1.fbs)
+  compile_flatbuffers_schema_to_cpp_opt(tests/namespace_test/namespace_test1.fbs "--no-includes;--gen-compare;--gen-name-strings")
-  compile_flatbuffers_schema_to_cpp(tests/namespace_test/namespace_test2.fbs)
+  compile_flatbuffers_schema_to_cpp_opt(tests/namespace_test/namespace_test2.fbs "--no-includes;--gen-compare;--gen-name-strings")
-  compile_flatbuffers_schema_to_cpp(tests/union_vector/union_vector.fbs)
+  compile_flatbuffers_schema_to_cpp_opt(tests/union_vector/union_vector.fbs "--no-includes;--gen-compare;--gen-name-strings")
   compile_flatbuffers_schema_to_cpp(tests/optional_scalars.fbs)
   compile_flatbuffers_schema_to_cpp_opt(tests/native_type_test.fbs "")
   compile_flatbuffers_schema_to_cpp_opt(tests/arrays_test.fbs "--scoped-enums;--gen-compare")
@@ -496,10 +594,10 @@ if(FLATBUFFERS_BUILD_TESTS)
   endif()
   include_directories(${CMAKE_CURRENT_BINARY_DIR}/tests)
   add_executable(flattests ${FlatBuffers_Tests_SRCS})
+  target_link_libraries(flattests PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
+
   add_dependencies(flattests generated_code)
-  set_property(TARGET flattests
+
-    PROPERTY COMPILE_DEFINITIONS FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE
-    FLATBUFFERS_DEBUG_VERIFICATION_FAILURE=1)
   if(FLATBUFFERS_CODE_SANITIZE)
     add_fsanitize_to_target(flattests ${FLATBUFFERS_CODE_SANITIZE})
   endif()
@@ -507,24 +605,27 @@ if(FLATBUFFERS_BUILD_TESTS)
   compile_flatbuffers_schema_to_cpp(samples/monster.fbs)
   compile_flatbuffers_schema_to_binary(samples/monster.fbs)
   include_directories(${CMAKE_CURRENT_BINARY_DIR}/samples)
+
   add_executable(flatsamplebinary ${FlatBuffers_Sample_Binary_SRCS})
+  target_link_libraries(flatsamplebinary PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
   add_dependencies(flatsamplebinary generated_code)
+
   add_executable(flatsampletext ${FlatBuffers_Sample_Text_SRCS})
+  target_link_libraries(flatsampletext PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
   add_dependencies(flatsampletext generated_code)
+
   add_executable(flatsamplebfbs ${FlatBuffers_Sample_BFBS_SRCS})
+  target_link_libraries(flatsamplebfbs PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
   add_dependencies(flatsamplebfbs generated_code)
 
   if(FLATBUFFERS_BUILD_CPP17)
     # Don't generate header for flattests_cpp17 target.
     # This target uses "generated_cpp17/monster_test_generated.h"
-    # produced by direct call of generate_code.bat(sh) script.
     add_executable(flattests_cpp17 ${FlatBuffers_Tests_CPP17_SRCS})
     add_dependencies(flattests_cpp17 generated_code)
+    target_link_libraries(flattests_cpp17 PRIVATE $<BUILD_INTERFACE:ProjectConfig>)
     target_compile_features(flattests_cpp17 PRIVATE cxx_std_17)
-    target_compile_definitions(flattests_cpp17 PRIVATE
+
-      FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE
-      FLATBUFFERS_DEBUG_VERIFICATION_FAILURE=1
-    )
     if(FLATBUFFERS_CODE_SANITIZE)
       add_fsanitize_to_target(flattests_cpp17 ${FLATBUFFERS_CODE_SANITIZE})
     endif()
@@ -532,9 +633,6 @@ if(FLATBUFFERS_BUILD_TESTS)
 endif()
 
 if(FLATBUFFERS_BUILD_GRPCTEST)
-  if(CMAKE_COMPILER_IS_GNUCXX)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-parameter -Wno-shadow")
-  endif()
   if(NOT GRPC_INSTALL_PATH)
     message(SEND_ERROR "GRPC_INSTALL_PATH variable is not defined. See grpc/README.md")
   endif()
@@ -545,19 +643,21 @@ if(FLATBUFFERS_BUILD_GRPCTEST)
   INCLUDE_DIRECTORIES(${PROTOBUF_DOWNLOAD_PATH}/src)
   find_package(Threads REQUIRED)
   list(APPEND CMAKE_PREFIX_PATH ${GRPC_INSTALL_PATH})
+  find_package(absl CONFIG REQUIRED)
   find_package(protobuf CONFIG REQUIRED)
   find_package(gRPC CONFIG REQUIRED)
   add_executable(grpctest ${FlatBuffers_GRPCTest_SRCS})
   add_dependencies(grpctest generated_code)
-  target_link_libraries(grpctest PRIVATE gRPC::grpc++_unsecure gRPC::grpc_unsecure gRPC::gpr pthread dl)
+  target_link_libraries(grpctext 
-  if(FLATBUFFERS_CODE_SANITIZE AND NOT WIN32)
+    PRIVATE 
-    # GRPC test has problems with alignment and will fail under ASAN/UBSAN.
+      $<BUILD_INTERFACE:ProjectConfig>
-    # add_fsanitize_to_target(grpctest ${FLATBUFFERS_CODE_SANITIZE})
+      gRPC::grpc++_unsecure 
-  endif()
+      gRPC::gpr 
+      pthread
+      dl 
+  )
 endif()
 
-include(CMake/Version.cmake)
-
 if(FLATBUFFERS_INSTALL)
   include(GNUInstallDirs)
 
@@ -565,28 +665,21 @@ if(FLATBUFFERS_INSTALL)
 
   set(FB_CMAKE_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/flatbuffers")
 
-  configure_file(CMake/FlatbuffersConfigVersion.cmake.in FlatbuffersConfigVersion.cmake @ONLY)
+  configure_file(CMake/FlatBuffersConfigVersion.cmake.in FlatBuffersConfigVersion.cmake @ONLY)
   install(
-      FILES "CMake/FlatbuffersConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/FlatbuffersConfigVersion.cmake"
+      FILES "CMake/FlatBuffersConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/FlatBuffersConfigVersion.cmake"
       DESTINATION ${FB_CMAKE_DIR}
   )
 
   if(FLATBUFFERS_BUILD_FLATLIB)
-    if(CMAKE_VERSION VERSION_LESS 3.0)
+    install(
-      install(
+      TARGETS flatbuffers EXPORT FlatBuffersTargets
-        TARGETS flatbuffers EXPORT FlatbuffersTargets
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-      )
+    )
-    else()
-      install(
-        TARGETS flatbuffers EXPORT FlatbuffersTargets
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-      )
-    endif()
 
-    install(EXPORT FlatbuffersTargets
+    install(EXPORT FlatBuffersTargets
-      FILE FlatbuffersTargets.cmake
+      FILE FlatBuffersTargets.cmake
       NAMESPACE flatbuffers::
       DESTINATION ${FB_CMAKE_DIR}
     )
@@ -607,26 +700,17 @@ if(FLATBUFFERS_INSTALL)
   endif()
 
   if(FLATBUFFERS_BUILD_SHAREDLIB)
-    if(CMAKE_VERSION VERSION_LESS 3.0)
+    install(
-      install(
+      TARGETS flatbuffers_shared EXPORT FlatBuffersSharedTargets
-        TARGETS flatbuffers_shared EXPORT FlatbuffersSharedTargets
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-      )
+    )
-    else()
-      install(
-        TARGETS flatbuffers_shared EXPORT FlatbuffersSharedTargets
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-      )
-    endif()
 
-  install(
+    install(
-      EXPORT FlatbuffersSharedTargets
+      EXPORT FlatBuffersSharedTargets
-      FILE FlatbuffersSharedTargets.cmake
+      FILE FlatBuffersSharedTargets.cmake
       NAMESPACE flatbuffers::
       DESTINATION ${FB_CMAKE_DIR}
     )
@@ -676,3 +760,16 @@ if(UNIX)
         include(CPack)
     endif()
 endif()
+
+# Include for running Google Benchmarks.
+if(FLATBUFFERS_BUILD_BENCHMARKS)
+  add_subdirectory(benchmarks)
+endif()
+
+# Add FlatBuffers::FlatBuffers interface, needed for FetchContent_Declare
+add_library(FlatBuffers INTERFACE)
+add_library(FlatBuffers::FlatBuffers ALIAS FlatBuffers)
+target_include_directories(
+  FlatBuffers
+  INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>)

Formatters.md

@@ -11,7 +11,7 @@ If you are interesting in contributing to the flatbuffers project, please take a
 
 ## C++
 
-C++ uses `clang-format` as it's formatter. Run the following script `sh src/clang-format-git.sh`, and it should style the C++ code according to [google style guide](https://google.github.io/styleguide/cppguide.html).
+C++ uses `clang-format` as it's formatter. Run the following script `sh scripts/clang-format-git.sh`, and it should style the C++ code according to [google style guide](https://google.github.io/styleguide/cppguide.html).
 
 ## Swift
 

SECURITY.md

@@ -0,0 +1,11 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+To report a security issue, please use http://g.co/vulnz. We use
+http://g.co/vulnz for our intake, and do coordination and disclosure here on
+GitHub (including using GitHub Security Advisory). The Google Security Team will
+respond within 5 working days of your report on g.co/vulnz.
+
+Select the `I want to report a technical security or an abuse risk related bug
+in a Google product (SQLi, XSS, etc.)` option and complete the form.

WORKSPACE

@@ -3,20 +3,47 @@ workspace(name = "com_github_google_flatbuffers")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
-    name = "io_bazel_rules_go",
+    name = "platforms",
-    sha256 = "d1ffd055969c8f8d431e2d439813e42326961d0942bdf734d2c95dc30c369566",
+    sha256 = "379113459b0feaf6bfbb584a91874c065078aa673222846ac765f86661c27407",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.24.5/rules_go-v0.24.5.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.5/platforms-0.0.5.tar.gz",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.24.5/rules_go-v0.24.5.tar.gz",
+        "https://github.com/bazelbuild/platforms/releases/download/0.0.5/platforms-0.0.5.tar.gz",
     ],
 )
 
-load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
+http_archive(
+    name = "build_bazel_rules_swift",
+    sha256 = "a2fd565e527f83fb3f9eb07eb9737240e668c9242d3bc318712efa54a7deda97",
+    url = "https://github.com/bazelbuild/rules_swift/releases/download/0.27.0/rules_swift.0.27.0.tar.gz",
+)
+
+load(
+    "@build_bazel_rules_swift//swift:repositories.bzl",
+    "swift_rules_dependencies",
+)
+
+swift_rules_dependencies()
+
+load(
+    "@build_bazel_rules_swift//swift:extras.bzl",
+    "swift_rules_extra_dependencies",
+)
+
+swift_rules_extra_dependencies()
+
+http_archive(
+    name = "io_bazel_rules_go",
+    sha256 = "16e9fca53ed6bd4ff4ad76facc9b7b651a89db1689a2877d6fd7b82aa824e366",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.34.0/rules_go-v0.34.0.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.34.0/rules_go-v0.34.0.zip",
+    ],
+)
+
+load("@io_bazel_rules_go//go:deps.bzl", "go_rules_dependencies")
 
 go_rules_dependencies()
 
-go_register_toolchains()
-
 ##### Protobuf
 _PROTOBUF_VERSION = "3.15.2"
 
@@ -29,12 +56,12 @@ http_archive(
 )
 
 ##### GRPC
-_GRPC_VERSION = "1.36.1"
+_GRPC_VERSION = "1.48.0"  # https://github.com/grpc/grpc/releases/tag/v1.48.0
 
 http_archive(
     name = "com_github_grpc_grpc",
     strip_prefix = "grpc-" + _GRPC_VERSION,
-    urls = ["https://github.com/grpc/grpc/archive/v" + _GRPC_VERSION + ".tar.gz"],
+    urls = ["https://github.com/grpc/grpc/archive/refs/tags/v" + _GRPC_VERSION + ".tar.gz"],
 )
 
 load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
@@ -44,3 +71,28 @@ grpc_deps()
 load("@com_github_grpc_grpc//bazel:grpc_extra_deps.bzl", "grpc_extra_deps")
 
 grpc_extra_deps()
+
+# rules_go from https://github.com/bazelbuild/rules_go/releases/tag/v0.34.0
+http_archive(
+    name = "build_bazel_rules_nodejs",
+    sha256 = "965ee2492a2b087cf9e0f2ca472aeaf1be2eb650e0cfbddf514b9a7d3ea4b02a",
+    urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/5.2.0/rules_nodejs-5.2.0.tar.gz"],
+)
+
+load("@build_bazel_rules_nodejs//:repositories.bzl", "build_bazel_rules_nodejs_dependencies")
+
+build_bazel_rules_nodejs_dependencies()
+
+load("@build_bazel_rules_nodejs//:index.bzl", "node_repositories", "yarn_install")
+
+node_repositories()
+
+yarn_install(
+    name = "npm",
+    exports_directories_only = False,
+    # Unfreeze to add/remove packages.
+    frozen_lockfile = True,
+    package_json = "//:package.json",
+    symlink_node_modules = False,
+    yarn_lock = "//:yarn.lock",
+)

android/AndroidManifest.xml

@@ -1,20 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (c) 2013 Google, Inc.
-
-     This software is provided 'as-is', without any express or implied
-     warranty.  In no event will the authors be held liable for any damages
-     arising from the use of this software.
-     Permission is granted to anyone to use this software for any purpose,
-     including commercial applications, and to alter it and redistribute it
-     freely, subject to the following restrictions:
-     1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-     2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-     3. This notice may not be removed or altered from any source distribution.
- -->
 <!-- BEGIN_INCLUDE(manifest) -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.example.FlatBufferTest">

android/app/build.gradle

@@ -18,6 +18,10 @@ android {
       targetCompatibility JavaVersion.VERSION_1_8
     }
 
+    ndk {
+      abiFilters 'arm64-v8a', 'armeabi-v7a'
+    }
+    
     testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     externalNativeBuild {
       cmake {
@@ -33,7 +37,6 @@ android {
     }
   }
 
-  ndkVersion "21.3.6528147"
   externalNativeBuild {
     cmake {
       path "src/main/cpp/CMakeLists.txt"
@@ -52,16 +55,17 @@ android {
     fbsFiles.forEach{
       commandLineArgs.add(it.path)
     }
+
     commandLine commandLineArgs
 
     doFirst {
       delete "$outputCppDir/"
       mkdir "$outputCppDir/"
     }
+
     doLast {
-      if (execResult.getExitValue() != 0) {
+      if (executionResult.get().exitValue != 0) {
-        println(standardOutput.toString())
+        throw new GradleException("flatc failed with: ${executionResult.get().toString()}")
-        throw new GradleException("flatc command line failed")
       }
     }
   }
@@ -74,6 +78,10 @@ android {
 
     standardOutput = new ByteArrayOutputStream()
     errorOutput = new ByteArrayOutputStream()
+
+    setErrorOutput(errorOutput)
+    setStandardOutput(standardOutput)
+
     def commandLineArgs = ['flatc', '-o', outputKotlinDir, '--kotlin']
     fbsFiles.forEach{
       commandLineArgs.add(it.path)
@@ -85,53 +93,42 @@ android {
       mkdir "$outputKotlinDir/"
     }
     doLast {
-      if (execResult.getExitValue() != 0) {
+      if (executionResult.get().exitValue != 0) {
-        println(standardOutput.toString())
+        throw new GradleException("flatc failed with: ${executionResult.get().toString()}")
-        throw new GradleException("flatc command line failed")
       }
     }
   }
 
   afterEvaluate {
-    android.applicationVariants.all { variant ->
+    tasks.named("preBuild") {
-      variant.javaCompiler.dependsOn(generateFbsKotlin)
+      dependsOn(generateFbsKotlin)
-      variant.javaCompiler.dependsOn(generateFbsCpp)
+      dependsOn(generateFbsCpp)
     }
   }
 
-  flavorDimensions "stl-variant"
+//  flavorDimensions "stl-variant"
-  productFlavors {
+//  productFlavors {
-    stlport {
+//    gnustl {
-      dimension "stl-variant"
+//      dimension "stl-variant"
-      applicationIdSuffix ".stlport"
+//      applicationIdSuffix ".gnustl"
-      versionNameSuffix "-stlport"
+//      versionNameSuffix "-gnustl"
-      externalNativeBuild {
+//      externalNativeBuild {
-        ndkBuild {
+//        ndkBuild {
-          arguments "APP_STL=stlport_static"
+//          arguments "APP_STL=gnustl_static"
-        }
+//        }
-      }
+//      }
-    }
+//    }
-    gnustl {
+//    libcpp {
-      dimension "stl-variant"
+//      dimension "stl-variant"
-      applicationIdSuffix ".gnustl"
+//      applicationIdSuffix ".libcpp"
-      versionNameSuffix "-gnustl"
+//      versionNameSuffix "-libcpp"
-      externalNativeBuild {
+//      externalNativeBuild {
-        ndkBuild {
+//        ndkBuild {
-          arguments "APP_STL=gnustl_static"
+//          arguments "APP_STL=c++_static"
-        }
+//        }
-      }
+//      }
-    }
+//    }
-    libcpp {
+//  }
-      dimension "stl-variant"
-      applicationIdSuffix ".libcpp"
-      versionNameSuffix "-libcpp"
-      externalNativeBuild {
-        ndkBuild {
-          arguments "APP_STL=c++_static"
-        }
-      }
-    }
-  }
 }
 
 dependencies {

android/app/src/main/cpp/flatbuffers/CMakeLists.txt

@@ -15,17 +15,32 @@ set(CMAKE_CXX_FLAGS
    "${CMAKE_CXX_FLAGS} -fsigned-char")
 
 set(FlatBuffers_Library_SRCS
+        ${FLATBUFFERS_SRC}/include/flatbuffers/allocator.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/array.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/base.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/bfbs_generator.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/buffer.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/buffer_ref.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/default_allocator.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/detached_buffer.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/flatbuffer_builder.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/flatbuffers.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/flexbuffers.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/flex_flat_util.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/hash.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/idl.h
-        ${FLATBUFFERS_SRC}/include/flatbuffers/util.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/minireflect.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/reflection.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/reflection_generated.h
-        ${FLATBUFFERS_SRC}/include/flatbuffers/stl_emulation.h
-        ${FLATBUFFERS_SRC}/include/flatbuffers/flexbuffers.h
         ${FLATBUFFERS_SRC}/include/flatbuffers/registry.h
-        ${FLATBUFFERS_SRC}/include/flatbuffers/minireflect.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/stl_emulation.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/string.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/struct.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/table.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/util.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/vector.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/vector_downward.h
+        ${FLATBUFFERS_SRC}/include/flatbuffers/verifier.h
         ${FLATBUFFERS_SRC}/src/idl_parser.cpp
         ${FLATBUFFERS_SRC}/src/idl_gen_text.cpp
         ${FLATBUFFERS_SRC}/src/reflection.cpp

android/app/src/main/cpp/generated/animal_generated.h

@@ -35,7 +35,7 @@ struct Animal FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
            verifier.VerifyString(name()) &&
            VerifyOffset(verifier, VT_SOUND) &&
            verifier.VerifyString(sound()) &&
-           VerifyField<uint16_t>(verifier, VT_WEIGHT) &&
+           VerifyField<uint16_t>(verifier, VT_WEIGHT, 2) &&
            verifier.EndTable();
   }
 };
@@ -57,7 +57,6 @@ struct AnimalBuilder {
         : fbb_(_fbb) {
     start_ = fbb_.StartTable();
   }
-  AnimalBuilder &operator=(const AnimalBuilder &);
   flatbuffers::Offset<Animal> Finish() {
     const auto end = fbb_.EndTable(start_);
     auto o = flatbuffers::Offset<Animal>(end);

android/app/src/main/java/generated/com/fbs/app/Animal.kt

@@ -7,7 +7,6 @@ import kotlin.math.sign
 import com.google.flatbuffers.*
 
 @Suppress("unused")
-@ExperimentalUnsignedTypes
 class Animal : Table() {
 
     fun __init(_i: Int, _bb: ByteBuffer)  {

android/gradle.properties

@@ -19,3 +19,5 @@ android.useAndroidX=true
 android.enableJetifier=true
 # Kotlin code style for this project: "official" or "obsolete":
 kotlin.code.style=official
+# Use parallel builds
+org.gradle.parallel=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Thu Oct 29 19:47:23 CET 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip

appveyor.yml

@@ -1,89 +0,0 @@
-branches:
-  only:
-    - master
-
-environment:
-  nodejs_version: "14"
-
-  global:
-    # Workaround for https://github.com/conda/conda-build/issues/636
-    PYTHONIOENCODING: UTF-8
-    CONDA_INSTALL_LOCN: "C:\\Miniconda35-x64"
-    CMAKE_OPTIONS: ""
-    CPP_TEST_OPTIONS: ""
-
-  matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE_VS_VERSION: "10 2010"
-      CMAKE_OPTIONS: "-DFLATBUFFERS_BUILD_LEGACY=1"
-      CPP_TEST_OPTIONS: "--std-cpp c++0x"
-      MONSTER_EXTRA: "skip"
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE_VS_VERSION: "12 2013"
-      MONSTER_EXTRA: "skip"
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE_VS_VERSION: "14 2015"
-      MONSTER_EXTRA: ""
-
-platform:
-  - x86
-  - x64
-
-configuration:
-  - Debug
-  - Release
-
-before_build:
-  - set MONSTER_EXTRA=%MONSTER_EXTRA%
-  - cmake . -G"Visual Studio %CMAKE_VS_VERSION%" -DFLATBUFFERS_CODE_SANITIZE=1 %CMAKE_OPTIONS%
-  # This cuts down on a lot of noise generated by xamarin warnings.
-  - if exist "C:\Program Files (x86)\MSBuild\14.0\Microsoft.Common.targets\ImportAfter\Xamarin.Common.targets" del "C:\Program Files (x86)\MSBuild\14.0\Microsoft.Common.targets\ImportAfter\Xamarin.Common.targets"
-
-build:
-  project: ALL_BUILD.vcxproj
-  verbosity: minimal
-
-after_build:
-  - python conan/appveyor/install.py
-  - python conan/appveyor/build.py
-
-install:
-  - set PATH=%CONDA_INSTALL_LOCN%;%CONDA_INSTALL_LOCN%\scripts;%PATH%;
-  - ps: Install-Product node $env:nodejs_version
-
-test_script:
-  - call .appveyor\check-generate-code.bat -b %CONFIGURATION%
-  - "cd tests"
-  - rem "Building all code"
-  - generate_code.bat -b %CONFIGURATION% %CPP_TEST_OPTIONS%
-  - 7z a GeneratedMyGameCode.zip MyGame\
-  - rem "---------------- C++ -----------------"
-  - "cd .."
-  - "%CONFIGURATION%\\flattests.exe"
-  - rem "---------------- JS -----------------"
-  - "node --version"
-  - "npm install"
-  - "npm run compile"
-  - "cd tests"
-  - "TypeScriptTest.bat"
-  - rem "---------------- C# -----------------"
-  # Have to compile this here rather than in "build" above because AppVeyor only
-  # supports building one project??
-  - "cd FlatBuffers.Test"
-  - "dotnet new sln"
-  - "dotnet sln add FlatBuffers.Test.csproj"
-  - "nuget restore"
-  - "mkdir .tmp"
-  - "msbuild.exe /property:Configuration=Release;OutputPath=.tmp /verbosity:minimal FlatBuffers.Test.csproj"
-  - ".tmp\\FlatBuffers.Test.exe"
-  # Run tests with UNSAFE_BYTEBUFFER
-  - "msbuild.exe /property:Configuration=Release;UnsafeByteBuffer=true;OutputPath=.tmp /verbosity:minimal FlatBuffers.Test.csproj"
-  - ".tmp\\FlatBuffers.Test.exe"
-
-artifacts:
-  - path: $(CONFIGURATION)\flatc.exe
-    name: flatc.exe
-  - path: tests\GeneratedMyGameCode.zip
-    name: GeneratedMyGameCode.zip

benchmarks/CMakeLists.txt

@@ -0,0 +1,87 @@
+# Setup for running Google Benchmarks (https://github.com/google/benchmark) on
+# flatbuffers. This requires both that benchmark library and its depenency gtest
+# to build. Instead of including them here or doing a submodule, this uses
+# FetchContent (https://cmake.org/cmake/help/latest/module/FetchContent.html) to
+# grab the dependencies at config time. This requires CMake 3.14 or higher.
+cmake_minimum_required(VERSION 3.14)
+include(FetchContent)
+
+# No particular reason for the specific GIT_TAGs for the following repos, they
+# were just the latest releases when this was added.
+FetchContent_Declare(
+    googletest
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    GIT_TAG        e2239ee6043f73722e7aa812a459f54a28552929 # release-1.11.0
+)
+FetchContent_Declare(
+    googlebenchmark
+    GIT_REPOSITORY https://github.com/google/benchmark.git
+    GIT_TAG        0d98dba29d66e93259db7daa53a9327df767a415 # v1.6.1
+)
+
+# For Windows: Prevent overriding the parent project's compiler/linker 
+# settings.
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(
+    googletest
+    googlebenchmark
+)
+
+set(CPP_BENCH_DIR cpp)
+set(CPP_FB_BENCH_DIR ${CPP_BENCH_DIR}/flatbuffers)
+set(CPP_RAW_BENCH_DIR ${CPP_BENCH_DIR}/raw)
+set(CPP_BENCH_FBS ${CPP_FB_BENCH_DIR}/bench.fbs)
+set(CPP_BENCH_FB_GEN ${CPP_FB_BENCH_DIR}/bench_generated.h)
+
+set(FlatBenchmark_SRCS
+    ${CPP_BENCH_DIR}/benchmark_main.cpp
+    ${CPP_FB_BENCH_DIR}/fb_bench.cpp
+    ${CPP_RAW_BENCH_DIR}/raw_bench.cpp
+    ${CPP_BENCH_FB_GEN}
+)
+
+# Generate the flatbuffers benchmark code from the flatbuffers schema using
+# flatc itself, thus it depends on flatc. This also depends on the C++ runtime
+# flatbuffers and the schema file itself, so it should auto-generated at the
+# correct times.
+add_custom_command(
+    OUTPUT ${CPP_BENCH_FB_GEN}
+    COMMAND 
+        "${FLATBUFFERS_FLATC_EXECUTABLE}"
+        --cpp
+        -o ${CPP_FB_BENCH_DIR}
+        ${CPP_BENCH_FBS}
+    DEPENDS 
+        flatc
+        flatbuffers
+        ${CPP_BENCH_FBS}
+    COMMENT "Run Flatbuffers Benchmark Codegen: ${CPP_BENCH_FB_GEN}"
+    VERBATIM)
+
+# The main flatbuffers benchmark executable
+add_executable(flatbenchmark ${FlatBenchmark_SRCS})
+
+# Benchmark requires C++11 
+target_compile_features(flatbenchmark PUBLIC
+    cxx_std_11
+)
+
+target_compile_options(flatbenchmark
+    PRIVATE
+        -fno-aligned-new
+        -Wno-deprecated-declarations
+)
+
+# Set the output directory to the root binary directory
+set_target_properties(flatbenchmark 
+    PROPERTIES RUNTIME_OUTPUT_DIRECTORY 
+    "${CMAKE_BINARY_DIR}"
+)
+
+# The includes of the benchmark files are fully qualified from flatbuffers root.
+target_include_directories(flatbenchmark PUBLIC ${CMAKE_SOURCE_DIR})
+
+target_link_libraries(flatbenchmark 
+    benchmark::benchmark_main # _main to use their entry point 
+    gtest # Link to gtest so we can also assert in the benchmarks
+)

benchmarks/cpp/bench.h

@@ -0,0 +1,19 @@
+#ifndef BENCHMARKS_CPP_BENCH_H_
+#define BENCHMARKS_CPP_BENCH_H_
+
+#include <cstdint>
+
+struct Bench {
+  virtual ~Bench() {}
+
+  inline void Add(int64_t value) { sum += value; }
+
+  virtual uint8_t *Encode(void *buf, int64_t &len) = 0;
+  virtual void *Decode(void *buf, int64_t len) = 0;
+  virtual int64_t Use(void *decoded) = 0;
+  virtual void Dealloc(void *decoded) = 0;
+
+  int64_t sum = 0;
+};
+
+#endif // BENCHMARKS_CPP_BENCH_H_

benchmarks/cpp/benchmark_main.cpp

@@ -0,0 +1,96 @@
+#include <benchmark/benchmark.h>
+#include <gtest/gtest.h>
+
+#include "benchmarks/cpp/bench.h"
+#include "benchmarks/cpp/flatbuffers/fb_bench.h"
+#include "benchmarks/cpp/raw/raw_bench.h"
+
+static inline void Encode(benchmark::State &state,
+                          std::unique_ptr<Bench> &bench, uint8_t *buffer) {
+  int64_t length;
+  for (auto _ : state) {
+    bench->Encode(buffer, length);
+    benchmark::DoNotOptimize(length);
+  }
+}
+
+static inline void Decode(benchmark::State &state,
+                          std::unique_ptr<Bench> &bench, uint8_t *buffer) {
+  int64_t length;
+  uint8_t *encoded = bench->Encode(buffer, length);
+
+  for (auto _ : state) {
+    void *decoded = bench->Decode(encoded, length);
+    benchmark::DoNotOptimize(decoded);
+  }
+}
+
+static inline void Use(benchmark::State &state, std::unique_ptr<Bench> &bench,
+                       uint8_t *buffer, int64_t check_sum) {
+  int64_t length;
+  uint8_t *encoded = bench->Encode(buffer, length);
+  void *decoded = bench->Decode(encoded, length);
+
+  int64_t sum = 0;
+
+  for (auto _ : state) { sum = bench->Use(decoded); }
+
+  EXPECT_EQ(sum, check_sum);
+}
+
+static void BM_Flatbuffers_Encode(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  StaticAllocator allocator(&buffer[0]);
+  std::unique_ptr<Bench> bench = NewFlatBuffersBench(kBufferLength, &allocator);
+  Encode(state, bench, buffer);
+}
+BENCHMARK(BM_Flatbuffers_Encode);
+
+static void BM_Flatbuffers_Decode(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  StaticAllocator allocator(&buffer[0]);
+  std::unique_ptr<Bench> bench = NewFlatBuffersBench(kBufferLength, &allocator);
+  Decode(state, bench, buffer);
+}
+BENCHMARK(BM_Flatbuffers_Decode);
+
+static void BM_Flatbuffers_Use(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  StaticAllocator allocator(&buffer[0]);
+  std::unique_ptr<Bench> bench = NewFlatBuffersBench(kBufferLength, &allocator);
+  Use(state, bench, buffer, 218812692406581874);
+}
+BENCHMARK(BM_Flatbuffers_Use);
+
+static void BM_Raw_Encode(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  std::unique_ptr<Bench> bench = NewRawBench();
+  Encode(state, bench, buffer);
+}
+BENCHMARK(BM_Raw_Encode);
+
+static void BM_Raw_Decode(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  std::unique_ptr<Bench> bench = NewRawBench();
+  Decode(state, bench, buffer);
+}
+BENCHMARK(BM_Raw_Decode);
+
+static void BM_Raw_Use(benchmark::State &state) {
+  const int64_t kBufferLength = 1024;
+  uint8_t buffer[kBufferLength];
+
+  std::unique_ptr<Bench> bench = NewRawBench();
+  Use(state, bench, buffer, 218812692406581874);
+}
+BENCHMARK(BM_Raw_Use);

benchmarks/cpp/flatbuffers/bench.fbs

@@ -0,0 +1,52 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+// trying to represent a typical mix of datatypes:
+// 1 array of 3 elements, each element: 1 string, 3 nested objects, 9 scalars
+// root element has the array, additional string and an enum
+
+namespace benchmarks_flatbuffers;
+
+enum Enum : short { Apples, Pears, Bananas}
+
+struct Foo {
+  id:ulong;
+  count:short;
+  prefix:byte;
+  length:uint;
+}
+
+struct Bar {
+  parent:Foo;
+  time:int;
+  ratio:float;
+  size:ushort;
+}
+
+table FooBar {
+  sibling:Bar;
+  name:string;
+  rating:double;
+  postfix:ubyte;
+}
+
+table FooBarContainer {
+  list:[FooBar];  // 3 copies of the above
+  initialized:bool;
+  fruit:Enum;
+  location:string;
+}
+
+root_type FooBarContainer;

benchmarks/cpp/flatbuffers/bench_generated.h

@@ -0,0 +1,354 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+
+#ifndef FLATBUFFERS_GENERATED_BENCH_BENCHMARKS_FLATBUFFERS_H_
+#define FLATBUFFERS_GENERATED_BENCH_BENCHMARKS_FLATBUFFERS_H_
+
+#include "flatbuffers/flatbuffers.h"
+
+// Ensure the included flatbuffers.h is the same version as when this file was
+// generated, otherwise it may not be compatible.
+static_assert(FLATBUFFERS_VERSION_MAJOR == 2 &&
+              FLATBUFFERS_VERSION_MINOR == 0 &&
+              FLATBUFFERS_VERSION_REVISION == 6,
+             "Non-compatible flatbuffers version included");
+
+namespace benchmarks_flatbuffers {
+
+struct Foo;
+
+struct Bar;
+
+struct FooBar;
+struct FooBarBuilder;
+
+struct FooBarContainer;
+struct FooBarContainerBuilder;
+
+enum Enum : int16_t {
+  Enum_Apples = 0,
+  Enum_Pears = 1,
+  Enum_Bananas = 2,
+  Enum_MIN = Enum_Apples,
+  Enum_MAX = Enum_Bananas
+};
+
+inline const Enum (&EnumValuesEnum())[3] {
+  static const Enum values[] = {
+    Enum_Apples,
+    Enum_Pears,
+    Enum_Bananas
+  };
+  return values;
+}
+
+inline const char * const *EnumNamesEnum() {
+  static const char * const names[4] = {
+    "Apples",
+    "Pears",
+    "Bananas",
+    nullptr
+  };
+  return names;
+}
+
+inline const char *EnumNameEnum(Enum e) {
+  if (flatbuffers::IsOutRange(e, Enum_Apples, Enum_Bananas)) return "";
+  const size_t index = static_cast<size_t>(e);
+  return EnumNamesEnum()[index];
+}
+
+FLATBUFFERS_MANUALLY_ALIGNED_STRUCT(8) Foo FLATBUFFERS_FINAL_CLASS {
+ private:
+  uint64_t id_;
+  int16_t count_;
+  int8_t prefix_;
+  int8_t padding0__;
+  uint32_t length_;
+
+ public:
+  Foo()
+      : id_(0),
+        count_(0),
+        prefix_(0),
+        padding0__(0),
+        length_(0) {
+    (void)padding0__;
+  }
+  Foo(uint64_t _id, int16_t _count, int8_t _prefix, uint32_t _length)
+      : id_(flatbuffers::EndianScalar(_id)),
+        count_(flatbuffers::EndianScalar(_count)),
+        prefix_(flatbuffers::EndianScalar(_prefix)),
+        padding0__(0),
+        length_(flatbuffers::EndianScalar(_length)) {
+    (void)padding0__;
+  }
+  uint64_t id() const {
+    return flatbuffers::EndianScalar(id_);
+  }
+  int16_t count() const {
+    return flatbuffers::EndianScalar(count_);
+  }
+  int8_t prefix() const {
+    return flatbuffers::EndianScalar(prefix_);
+  }
+  uint32_t length() const {
+    return flatbuffers::EndianScalar(length_);
+  }
+};
+FLATBUFFERS_STRUCT_END(Foo, 16);
+
+FLATBUFFERS_MANUALLY_ALIGNED_STRUCT(8) Bar FLATBUFFERS_FINAL_CLASS {
+ private:
+  benchmarks_flatbuffers::Foo parent_;
+  int32_t time_;
+  float ratio_;
+  uint16_t size_;
+  int16_t padding0__;  int32_t padding1__;
+
+ public:
+  Bar()
+      : parent_(),
+        time_(0),
+        ratio_(0),
+        size_(0),
+        padding0__(0),
+        padding1__(0) {
+    (void)padding0__;
+    (void)padding1__;
+  }
+  Bar(const benchmarks_flatbuffers::Foo &_parent, int32_t _time, float _ratio, uint16_t _size)
+      : parent_(_parent),
+        time_(flatbuffers::EndianScalar(_time)),
+        ratio_(flatbuffers::EndianScalar(_ratio)),
+        size_(flatbuffers::EndianScalar(_size)),
+        padding0__(0),
+        padding1__(0) {
+    (void)padding0__;
+    (void)padding1__;
+  }
+  const benchmarks_flatbuffers::Foo &parent() const {
+    return parent_;
+  }
+  int32_t time() const {
+    return flatbuffers::EndianScalar(time_);
+  }
+  float ratio() const {
+    return flatbuffers::EndianScalar(ratio_);
+  }
+  uint16_t size() const {
+    return flatbuffers::EndianScalar(size_);
+  }
+};
+FLATBUFFERS_STRUCT_END(Bar, 32);
+
+struct FooBar FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
+  typedef FooBarBuilder Builder;
+  enum FlatBuffersVTableOffset FLATBUFFERS_VTABLE_UNDERLYING_TYPE {
+    VT_SIBLING = 4,
+    VT_NAME = 6,
+    VT_RATING = 8,
+    VT_POSTFIX = 10
+  };
+  const benchmarks_flatbuffers::Bar *sibling() const {
+    return GetStruct<const benchmarks_flatbuffers::Bar *>(VT_SIBLING);
+  }
+  const flatbuffers::String *name() const {
+    return GetPointer<const flatbuffers::String *>(VT_NAME);
+  }
+  double rating() const {
+    return GetField<double>(VT_RATING, 0.0);
+  }
+  uint8_t postfix() const {
+    return GetField<uint8_t>(VT_POSTFIX, 0);
+  }
+  bool Verify(flatbuffers::Verifier &verifier) const {
+    return VerifyTableStart(verifier) &&
+           VerifyField<benchmarks_flatbuffers::Bar>(verifier, VT_SIBLING, 8) &&
+           VerifyOffset(verifier, VT_NAME) &&
+           verifier.VerifyString(name()) &&
+           VerifyField<double>(verifier, VT_RATING, 8) &&
+           VerifyField<uint8_t>(verifier, VT_POSTFIX, 1) &&
+           verifier.EndTable();
+  }
+};
+
+struct FooBarBuilder {
+  typedef FooBar Table;
+  flatbuffers::FlatBufferBuilder &fbb_;
+  flatbuffers::uoffset_t start_;
+  void add_sibling(const benchmarks_flatbuffers::Bar *sibling) {
+    fbb_.AddStruct(FooBar::VT_SIBLING, sibling);
+  }
+  void add_name(flatbuffers::Offset<flatbuffers::String> name) {
+    fbb_.AddOffset(FooBar::VT_NAME, name);
+  }
+  void add_rating(double rating) {
+    fbb_.AddElement<double>(FooBar::VT_RATING, rating, 0.0);
+  }
+  void add_postfix(uint8_t postfix) {
+    fbb_.AddElement<uint8_t>(FooBar::VT_POSTFIX, postfix, 0);
+  }
+  explicit FooBarBuilder(flatbuffers::FlatBufferBuilder &_fbb)
+        : fbb_(_fbb) {
+    start_ = fbb_.StartTable();
+  }
+  flatbuffers::Offset<FooBar> Finish() {
+    const auto end = fbb_.EndTable(start_);
+    auto o = flatbuffers::Offset<FooBar>(end);
+    return o;
+  }
+};
+
+inline flatbuffers::Offset<FooBar> CreateFooBar(
+    flatbuffers::FlatBufferBuilder &_fbb,
+    const benchmarks_flatbuffers::Bar *sibling = nullptr,
+    flatbuffers::Offset<flatbuffers::String> name = 0,
+    double rating = 0.0,
+    uint8_t postfix = 0) {
+  FooBarBuilder builder_(_fbb);
+  builder_.add_rating(rating);
+  builder_.add_name(name);
+  builder_.add_sibling(sibling);
+  builder_.add_postfix(postfix);
+  return builder_.Finish();
+}
+
+inline flatbuffers::Offset<FooBar> CreateFooBarDirect(
+    flatbuffers::FlatBufferBuilder &_fbb,
+    const benchmarks_flatbuffers::Bar *sibling = nullptr,
+    const char *name = nullptr,
+    double rating = 0.0,
+    uint8_t postfix = 0) {
+  auto name__ = name ? _fbb.CreateString(name) : 0;
+  return benchmarks_flatbuffers::CreateFooBar(
+      _fbb,
+      sibling,
+      name__,
+      rating,
+      postfix);
+}
+
+struct FooBarContainer FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
+  typedef FooBarContainerBuilder Builder;
+  enum FlatBuffersVTableOffset FLATBUFFERS_VTABLE_UNDERLYING_TYPE {
+    VT_LIST = 4,
+    VT_INITIALIZED = 6,
+    VT_FRUIT = 8,
+    VT_LOCATION = 10
+  };
+  const flatbuffers::Vector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>> *list() const {
+    return GetPointer<const flatbuffers::Vector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>> *>(VT_LIST);
+  }
+  bool initialized() const {
+    return GetField<uint8_t>(VT_INITIALIZED, 0) != 0;
+  }
+  benchmarks_flatbuffers::Enum fruit() const {
+    return static_cast<benchmarks_flatbuffers::Enum>(GetField<int16_t>(VT_FRUIT, 0));
+  }
+  const flatbuffers::String *location() const {
+    return GetPointer<const flatbuffers::String *>(VT_LOCATION);
+  }
+  bool Verify(flatbuffers::Verifier &verifier) const {
+    return VerifyTableStart(verifier) &&
+           VerifyOffset(verifier, VT_LIST) &&
+           verifier.VerifyVector(list()) &&
+           verifier.VerifyVectorOfTables(list()) &&
+           VerifyField<uint8_t>(verifier, VT_INITIALIZED, 1) &&
+           VerifyField<int16_t>(verifier, VT_FRUIT, 2) &&
+           VerifyOffset(verifier, VT_LOCATION) &&
+           verifier.VerifyString(location()) &&
+           verifier.EndTable();
+  }
+};
+
+struct FooBarContainerBuilder {
+  typedef FooBarContainer Table;
+  flatbuffers::FlatBufferBuilder &fbb_;
+  flatbuffers::uoffset_t start_;
+  void add_list(flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>>> list) {
+    fbb_.AddOffset(FooBarContainer::VT_LIST, list);
+  }
+  void add_initialized(bool initialized) {
+    fbb_.AddElement<uint8_t>(FooBarContainer::VT_INITIALIZED, static_cast<uint8_t>(initialized), 0);
+  }
+  void add_fruit(benchmarks_flatbuffers::Enum fruit) {
+    fbb_.AddElement<int16_t>(FooBarContainer::VT_FRUIT, static_cast<int16_t>(fruit), 0);
+  }
+  void add_location(flatbuffers::Offset<flatbuffers::String> location) {
+    fbb_.AddOffset(FooBarContainer::VT_LOCATION, location);
+  }
+  explicit FooBarContainerBuilder(flatbuffers::FlatBufferBuilder &_fbb)
+        : fbb_(_fbb) {
+    start_ = fbb_.StartTable();
+  }
+  flatbuffers::Offset<FooBarContainer> Finish() {
+    const auto end = fbb_.EndTable(start_);
+    auto o = flatbuffers::Offset<FooBarContainer>(end);
+    return o;
+  }
+};
+
+inline flatbuffers::Offset<FooBarContainer> CreateFooBarContainer(
+    flatbuffers::FlatBufferBuilder &_fbb,
+    flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>>> list = 0,
+    bool initialized = false,
+    benchmarks_flatbuffers::Enum fruit = benchmarks_flatbuffers::Enum_Apples,
+    flatbuffers::Offset<flatbuffers::String> location = 0) {
+  FooBarContainerBuilder builder_(_fbb);
+  builder_.add_location(location);
+  builder_.add_list(list);
+  builder_.add_fruit(fruit);
+  builder_.add_initialized(initialized);
+  return builder_.Finish();
+}
+
+inline flatbuffers::Offset<FooBarContainer> CreateFooBarContainerDirect(
+    flatbuffers::FlatBufferBuilder &_fbb,
+    const std::vector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>> *list = nullptr,
+    bool initialized = false,
+    benchmarks_flatbuffers::Enum fruit = benchmarks_flatbuffers::Enum_Apples,
+    const char *location = nullptr) {
+  auto list__ = list ? _fbb.CreateVector<flatbuffers::Offset<benchmarks_flatbuffers::FooBar>>(*list) : 0;
+  auto location__ = location ? _fbb.CreateString(location) : 0;
+  return benchmarks_flatbuffers::CreateFooBarContainer(
+      _fbb,
+      list__,
+      initialized,
+      fruit,
+      location__);
+}
+
+inline const benchmarks_flatbuffers::FooBarContainer *GetFooBarContainer(const void *buf) {
+  return flatbuffers::GetRoot<benchmarks_flatbuffers::FooBarContainer>(buf);
+}
+
+inline const benchmarks_flatbuffers::FooBarContainer *GetSizePrefixedFooBarContainer(const void *buf) {
+  return flatbuffers::GetSizePrefixedRoot<benchmarks_flatbuffers::FooBarContainer>(buf);
+}
+
+inline bool VerifyFooBarContainerBuffer(
+    flatbuffers::Verifier &verifier) {
+  return verifier.VerifyBuffer<benchmarks_flatbuffers::FooBarContainer>(nullptr);
+}
+
+inline bool VerifySizePrefixedFooBarContainerBuffer(
+    flatbuffers::Verifier &verifier) {
+  return verifier.VerifySizePrefixedBuffer<benchmarks_flatbuffers::FooBarContainer>(nullptr);
+}
+
+inline void FinishFooBarContainerBuffer(
+    flatbuffers::FlatBufferBuilder &fbb,
+    flatbuffers::Offset<benchmarks_flatbuffers::FooBarContainer> root) {
+  fbb.Finish(root);
+}
+
+inline void FinishSizePrefixedFooBarContainerBuffer(
+    flatbuffers::FlatBufferBuilder &fbb,
+    flatbuffers::Offset<benchmarks_flatbuffers::FooBarContainer> root) {
+  fbb.FinishSizePrefixed(root);
+}
+
+}  // namespace benchmarks_flatbuffers
+
+#endif  // FLATBUFFERS_GENERATED_BENCH_BENCHMARKS_FLATBUFFERS_H_

benchmarks/cpp/flatbuffers/fb_bench.cpp

@@ -0,0 +1,80 @@
+#include "benchmarks/cpp/flatbuffers/fb_bench.h"
+
+#include <cstdint>
+#include <memory>
+
+#include "benchmarks/cpp/bench.h"
+#include "benchmarks/cpp/flatbuffers/bench_generated.h"
+#include "flatbuffers/flatbuffers.h"
+
+using namespace flatbuffers;
+using namespace benchmarks_flatbuffers;
+
+namespace {
+
+struct FlatBufferBench : Bench {
+  explicit FlatBufferBench(int64_t initial_size, Allocator *allocator)
+      : fbb(initial_size, allocator, false) {}
+
+  uint8_t *Encode(void *, int64_t &len) override {
+    fbb.Clear();
+
+    const int kVectorLength = 3;
+    Offset<FooBar> vec[kVectorLength];
+
+    for (int i = 0; i < kVectorLength; ++i) {
+      Foo foo(0xABADCAFEABADCAFE + i, 10000 + i, '@' + i, 1000000 + i);
+      Bar bar(foo, 123456 + i, 3.14159f + i, 10000 + i);
+      auto name = fbb.CreateString("Hello, World!");
+      auto foobar =
+          CreateFooBar(fbb, &bar, name, 3.1415432432445543543 + i, '!' + i);
+      vec[i] = foobar;
+    }
+    auto location = fbb.CreateString("http://google.com/flatbuffers/");
+    auto foobarvec = fbb.CreateVector(vec, kVectorLength);
+    auto foobarcontainer =
+        CreateFooBarContainer(fbb, foobarvec, true, Enum_Bananas, location);
+    fbb.Finish(foobarcontainer);
+
+    len = fbb.GetSize();
+    return fbb.GetBufferPointer();
+  }
+
+  int64_t Use(void *decoded) override {
+    sum = 0;
+    auto foobarcontainer = GetFooBarContainer(decoded);
+    sum = 0;
+    Add(foobarcontainer->initialized());
+    Add(foobarcontainer->location()->Length());
+    Add(foobarcontainer->fruit());
+    for (unsigned int i = 0; i < foobarcontainer->list()->Length(); i++) {
+      auto foobar = foobarcontainer->list()->Get(i);
+      Add(foobar->name()->Length());
+      Add(foobar->postfix());
+      Add(static_cast<int64_t>(foobar->rating()));
+      auto bar = foobar->sibling();
+      Add(static_cast<int64_t>(bar->ratio()));
+      Add(bar->size());
+      Add(bar->time());
+      auto &foo = bar->parent();
+      Add(foo.count());
+      Add(foo.id());
+      Add(foo.length());
+      Add(foo.prefix());
+    }
+    return sum;
+  }
+
+  void *Decode(void *buffer, int64_t) override { return buffer; }
+  void Dealloc(void *) override {};
+
+  FlatBufferBuilder fbb;
+};
+
+}  // namespace
+
+std::unique_ptr<Bench> NewFlatBuffersBench(int64_t initial_size,
+                                           Allocator *allocator) {
+  return std::unique_ptr<FlatBufferBench>(
+      new FlatBufferBench(initial_size, allocator));
+}

benchmarks/cpp/flatbuffers/fb_bench.h

@@ -0,0 +1,23 @@
+#ifndef BENCHMARKS_CPP_FLATBUFFERS_FB_BENCH_H_
+#define BENCHMARKS_CPP_FLATBUFFERS_FB_BENCH_H_
+
+#include <cstdint>
+#include <memory>
+
+#include "benchmarks/cpp/bench.h"
+#include "include/flatbuffers/flatbuffers.h"
+
+struct StaticAllocator : public flatbuffers::Allocator {
+  explicit StaticAllocator(uint8_t *buffer) : buffer_(buffer) {}
+
+  uint8_t *allocate(size_t) override { return buffer_; }
+
+  void deallocate(uint8_t *, size_t) override {}
+
+  uint8_t *buffer_;
+};
+
+std::unique_ptr<Bench> NewFlatBuffersBench(
+    int64_t initial_size = 1024, flatbuffers::Allocator *allocator = nullptr);
+
+#endif  // BENCHMARKS_CPP_FLATBUFFERS_FB_BENCH_H_

benchmarks/cpp/raw/raw_bench.cpp

@@ -0,0 +1,109 @@
+#include "benchmarks/cpp/raw/raw_bench.h"
+
+#include <cstdint>
+#include <cstring>
+#include <memory>
+
+#include "benchmarks/cpp/bench.h"
+
+namespace {
+const int64_t kStringLength = 32;
+const int64_t kVectorLength = 3;
+
+enum Enum { Apples, Pears, Bananas };
+
+struct Foo {
+  int64_t id;
+  short count;
+  char prefix;
+  int length;
+};
+
+struct Bar {
+  Foo parent;
+  int time;
+  float ratio;
+  unsigned short size;
+};
+
+struct FooBar {
+  Bar sibling;
+  // We have to stick this in, otherwise strlen() will make it slower than
+  // FlatBuffers:
+  int name_len;
+  char name[kStringLength];
+  double rating;
+  unsigned char postfix;
+};
+
+struct FooBarContainer {
+  FooBar list[kVectorLength];  // 3 copies of the above
+  bool initialized;
+  Enum fruit;
+  int location_len;
+  char location[kStringLength];
+};
+
+struct RawBench : Bench {
+  uint8_t *Encode(void *buf, int64_t &len) override {
+    FooBarContainer *fbc = new (buf) FooBarContainer;
+    strcpy(fbc->location, "http://google.com/flatbuffers/");  // Unsafe eek!
+    fbc->location_len = (int)strlen(fbc->location);
+    fbc->fruit = Bananas;
+    fbc->initialized = true;
+    for (int i = 0; i < kVectorLength; i++) {
+      // We add + i to not make these identical copies for a more realistic
+      // compression test.
+      auto &foobar = fbc->list[i];
+      foobar.rating = 3.1415432432445543543 + i;
+      foobar.postfix = '!' + i;
+      strcpy(foobar.name, "Hello, World!");
+      foobar.name_len = (int)strlen(foobar.name);
+      auto &bar = foobar.sibling;
+      bar.ratio = 3.14159f + i;
+      bar.size = 10000 + i;
+      bar.time = 123456 + i;
+      auto &foo = bar.parent;
+      foo.id = 0xABADCAFEABADCAFE + i;
+      foo.count = 10000 + i;
+      foo.length = 1000000 + i;
+      foo.prefix = '@' + i;
+    }
+
+    len = sizeof(FooBarContainer);
+    return reinterpret_cast<uint8_t *>(fbc);
+  };
+
+  int64_t Use(void *decoded) override {
+    auto foobarcontainer = reinterpret_cast<FooBarContainer *>(decoded);
+    sum = 0;
+    Add(foobarcontainer->initialized);
+    Add(foobarcontainer->location_len);
+    Add(foobarcontainer->fruit);
+    for (unsigned int i = 0; i < kVectorLength; i++) {
+      auto foobar = &foobarcontainer->list[i];
+      Add(foobar->name_len);
+      Add(foobar->postfix);
+      Add(static_cast<int64_t>(foobar->rating));
+      auto bar = &foobar->sibling;
+      Add(static_cast<int64_t>(bar->ratio));
+      Add(bar->size);
+      Add(bar->time);
+      auto &foo = bar->parent;
+      Add(foo.count);
+      Add(foo.id);
+      Add(foo.length);
+      Add(foo.prefix);
+    }
+    return sum;
+  }
+
+  void *Decode(void *buf, int64_t) override { return buf; }
+  void Dealloc(void *) override{};
+};
+
+}  // namespace
+
+std::unique_ptr<Bench> NewRawBench() {
+  return std::unique_ptr<RawBench>(new RawBench());
+}

benchmarks/cpp/raw/raw_bench.h

@@ -0,0 +1,10 @@
+#ifndef BENCHMARKS_CPP_RAW_RAW_BENCH_H_
+#define BENCHMARKS_CPP_RAW_RAW_BENCH_H_
+
+#include <memory>
+
+#include "benchmarks/cpp/bench.h"
+
+std::unique_ptr<Bench> NewRawBench();
+
+#endif  // BENCHMARKS_CPP_RAW_RAW_BENCH_H_

build_defs.bzl

@@ -13,6 +13,7 @@ DEFAULT_INCLUDE_PATHS = [
     "./",
     "$(GENDIR)",
     "$(BINDIR)",
+    "$(execpath @com_github_google_flatbuffers//:flatc).runfiles/com_github_google_flatbuffers",
 ]
 
 DEFAULT_FLATC_ARGS = [
@@ -37,6 +38,7 @@ def flatbuffer_library_public(
         reflection_visibility = None,
         compatible_with = None,
         restricted_to = None,
+        target_compatible_with = None,
         output_to_bindir = False):
     """Generates code files for reading/writing the given flatbuffers in the requested language using the public compiler.
 
@@ -58,6 +60,8 @@ def flatbuffer_library_public(
         built for, in addition to default-supported environments.
       restricted_to: Optional, The list of environments this rule can be built
         for, instead of default-supported environments.
+      target_compatible_with: Optional, The list of target platform constraints
+        to use.
       output_to_bindir: Passed to genrule for output to bin directory.
 
 
@@ -92,6 +96,7 @@ def flatbuffer_library_public(
         tools = [flatc_path],
         cmd = genrule_cmd,
         compatible_with = compatible_with,
+        target_compatible_with = target_compatible_with,
         restricted_to = restricted_to,
         message = "Generating flatbuffer files for %s:" % (name),
     )
@@ -120,8 +125,10 @@ def flatbuffer_library_public(
             tools = [flatc_path],
             compatible_with = compatible_with,
             restricted_to = restricted_to,
+            target_compatible_with = target_compatible_with,
             cmd = reflection_genrule_cmd,
             message = "Generating flatbuffer reflection binary for %s:" % (name),
+            visibility = reflection_visibility,
         )
         native.filegroup(
             name = "%s_out" % reflection_name,
@@ -136,15 +143,18 @@ def flatbuffer_cc_library(
         srcs,
         srcs_filegroup_name = "",
         out_prefix = "",
+        deps = [],
         includes = [],
         include_paths = DEFAULT_INCLUDE_PATHS,
+        cc_include_paths = [],
         flatc_args = DEFAULT_FLATC_ARGS,
         visibility = None,
         compatible_with = None,
         restricted_to = None,
+        target_compatible_with = None,
         srcs_filegroup_visibility = None,
         gen_reflections = False):
-    '''A cc_library with the generated reader/writers for the given flatbuffer definitions.
+    """A cc_library with the generated reader/writers for the given flatbuffer definitions.
 
     Args:
       name: Rule name.
@@ -154,9 +164,12 @@ def flatbuffer_cc_library(
           flatbuffer_cc_library that depends on this one's schemas.
       out_prefix: Prepend this path to the front of all generated files. Usually
           is a directory name.
+      deps: Optional, list of other flatbuffer_cc_library's to depend on. Cannot be specified
+          alongside includes.
       includes: Optional, list of filegroups of schemas that the srcs depend on.
-          ** SEE REMARKS BELOW **
+          Use of this is discouraged, and may be deprecated.
       include_paths: Optional, list of paths the includes files can be found in.
+      cc_include_paths: Optional, list of paths to add to the cc_library includes attribute.
       flatc_args: Optional list of additional arguments to pass to flatc
           (e.g. --gen-mutable).
       visibility: The visibility of the generated cc_library. By default, use the
@@ -169,6 +182,8 @@ def flatbuffer_cc_library(
         for, in addition to default-supported environments.
       restricted_to: Optional, The list of environments this rule can be built
         for, instead of default-supported environments.
+      target_compatible_with: Optional, The list of target platform constraints
+        to use.
 
     This produces:
       filegroup([name]_srcs): all generated .h files.
@@ -177,41 +192,17 @@ def flatbuffer_cc_library(
           parameter, if they depend on the schemas in this library.
       Fileset([name]_reflection): (Optional) all generated reflection binaries.
       cc_library([name]): library with sources and flatbuffers deps.
-
+    """
-    Remarks:
-      ** Because the genrule used to call flatc does not have any trivial way of
-        computing the output list of files transitively generated by includes and
-        --gen-includes (the default) being defined for flatc, the --gen-includes
-        flag will not work as expected. The way around this is to add a dependency
-        to the flatbuffer_cc_library defined alongside the flatc included Fileset.
-        For example you might define:
-
-        flatbuffer_cc_library(
-            name = "my_fbs",
-            srcs = [ "schemas/foo.fbs" ],
-            includes = [ "//third_party/bazz:bazz_fbs_includes" ],
-        )
-
-        In which foo.fbs includes a few files from the Fileset defined at
-        //third_party/bazz:bazz_fbs_includes. When compiling the library that
-        includes foo_generated.h, and therefore has my_fbs as a dependency, it
-        will fail to find any of the bazz *_generated.h files unless you also
-        add bazz's flatbuffer_cc_library to your own dependency list, e.g.:
-
-        cc_library(
-            name = "my_lib",
-            deps = [
-                ":my_fbs",
-                "//third_party/bazz:bazz_fbs"
-            ],
-        )
-
-        Happy dependent Flatbuffering!
-    '''
     output_headers = [
-        (out_prefix + "%s_generated.h") % (s.replace(".fbs", "").split("/")[-1])
+        (out_prefix + "%s_generated.h") % (s.replace(".fbs", "").split("/")[-1].split(":")[-1])
         for s in srcs
     ]
+    if deps and includes:
+        # There is no inherent reason we couldn't support both, but this discourages
+        # use of includes without good reason.
+        fail("Cannot specify both deps and include in flatbuffer_cc_library.")
+    if deps:
+        includes = [d + "_includes" for d in deps]
     reflection_name = "%s_reflection" % name if gen_reflections else ""
 
     srcs_lib = "%s_srcs" % (name)
@@ -226,6 +217,7 @@ def flatbuffer_cc_library(
         flatc_args = flatc_args,
         compatible_with = compatible_with,
         restricted_to = restricted_to,
+        target_compatible_with = target_compatible_with,
         reflection_name = reflection_name,
         reflection_visibility = visibility,
     )
@@ -242,10 +234,12 @@ def flatbuffer_cc_library(
         ],
         deps = [
             "@com_github_google_flatbuffers//:runtime_cc",
-        ],
+            "@com_github_google_flatbuffers//:flatbuffers",
-        includes = [],
+        ] + deps,
+        includes = cc_include_paths,
         compatible_with = compatible_with,
         restricted_to = restricted_to,
+        target_compatible_with = target_compatible_with,
         linkstatic = 1,
         visibility = visibility,
     )
@@ -254,7 +248,7 @@ def flatbuffer_cc_library(
     # Flatbuffer set.
     native.filegroup(
         name = srcs_filegroup_name if srcs_filegroup_name else "%s_includes" % (name),
-        srcs = srcs,
+        srcs = srcs + includes,
         compatible_with = compatible_with,
         restricted_to = restricted_to,
         visibility = srcs_filegroup_visibility if srcs_filegroup_visibility != None else visibility,

conan/CMakeLists.txt

@@ -5,8 +5,8 @@ message(STATUS "Conan FlatBuffers Wrapper")
 include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
 conan_basic_setup()
 
-if (WIN32 AND MSVC AND FLATBUFFERS_BUILD_SHAREDLIB)
+if (WIN32 AND MSVC_LIKE AND FLATBUFFERS_BUILD_SHAREDLIB)
     set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
-endif(WIN32 AND MSVC AND FLATBUFFERS_BUILD_SHAREDLIB)
+endif(WIN32 AND MSVC_LIKE AND FLATBUFFERS_BUILD_SHAREDLIB)
 
 include(${CMAKE_SOURCE_DIR}/CMakeListsOriginal.txt)

conan/build.py

@@ -6,16 +6,6 @@ import subprocess
 from cpt.packager import ConanMultiPackager
 
 
-def set_appveyor_environment():
-    if os.getenv("APPVEYOR") is not None:
-        compiler_version = os.getenv("CMAKE_VS_VERSION").split(" ")[0].replace('"', '')
-        os.environ["CONAN_VISUAL_VERSIONS"] = compiler_version
-        os.environ["CONAN_STABLE_BRANCH_PATTERN"] = "master"
-        ci_platform = os.getenv("Platform").replace('"', '')
-        ci_platform = "x86" if ci_platform == "x86" else "x86_64"
-        os.environ["CONAN_ARCHS"] = ci_platform
-        os.environ["CONAN_BUILD_TYPES"] = os.getenv("Configuration").replace('"', '')
-
 
 def get_branch():
     try:
@@ -56,7 +46,6 @@ if __name__ == "__main__":
     stable_branch_pattern = os.getenv("CONAN_STABLE_BRANCH_PATTERN", r"v\d+\.\d+\.\d+.*")
     test_folder = os.getenv("CPT_TEST_FOLDER", os.path.join("conan", "test_package"))
     upload_only_when_stable = os.getenv("CONAN_UPLOAD_ONLY_WHEN_STABLE", True)
-    set_appveyor_environment()
 
     builder = ConanMultiPackager(reference=get_reference(username),
                                  username=username,

dart/CHANGELOG.md

@@ -1,4 +1,22 @@
-# CHANGELOG
+## 2.0.5
+
+- switch to null safety (#6696)
+- add Object APIs (pack/unpack) (#6682, #6723, #6846)
+- add custom builder buffer allocator support (#6711)
+- add `Builder.size()` - finished buffer size (#6403)
+- make `writeString()` argument non-nullable (#6737)
+- make tables fixed size (expect the number of fields when creating) (#6735)
+- make table deduplication optional (param `deduplicateTables`) (#6734)
+- change `Builder.reset()` to reuse an existing buffer (#6661)
+- change table building to assert() instead of exceptions (#6754)
+- optimize `writeString()` for ASCII (param `asciiOptimization`) (#6736)
+- change `StringReader` to make ASCII optimization optional (param `asciiOptimization`) (#6758)
+- change `[byte]` and `[ubyte]` representation to `dart:typed_data` `Int8List` and `Uint8List` (#6839)
+- rename `lowFinish()` to `buffer` getter (#6712)
+- fix `Builder._writeString()` - always write trailing zero byte (#6390)
+- fix `Builder.reset()` - clear vTables (#6386)
+- make sure added padding is zeroed, same as in C++ (#6716)
+- many performance improvements (#6755)
 
 ## 1.9.2
 

dart/LICENSE

@@ -1,35 +1,3 @@
-The code in lib/flat_buffers.dart is based on code that was releases under the 
-following license:
-
-Copyright 2012, the Dart project authors. All rights reserved.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-    * Neither the name of Google Inc. nor the names of its
-      contributors may be used to endorse or promote products derived
-      from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-To the extent permissible, the changes to that code and the other assets in 
-this package are licensed under the Apache2 license:
-
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/

dart/README.md

@@ -1,13 +1,23 @@
 # FlatBuffers for Dart
 
-This package is used to read and write FlatBuffer files in Dart.
+This package is used to read and write [FlatBuffers](https://google.github.io/flatbuffers/).
 
-Most consumers will want to use the [`flatc`](https://github.com/google/flatbuffers)
+Most consumers will want to use the [`flatc` - FlatBuffer compiler](https://github.com/google/flatbuffers) binary for your platform.
-compiler to generate Dart code from a FlatBuffers IDL schema.  For example, the
+You can find it in the `generator/{Platform}` directory of the [released package archive](https://pub.dev/packages/flat_buffers/versions/2.0.5.tar.gz).
-`monster_my_game.sample_generated.dart` was generated with `flatc` from
+
-`monster.fbs` in the example folder. The generated classes can be used to read
+The FlatBuffer compiler `flatc` reads a FlatBuffers IDL schema and generates Dart code.
-or write binary files that are interoperable with other languages and platforms
+The generated classes can be used to read or write binary data/files that are interoperable with
-supported by FlatBuffers, as illustrated in the `example.dart` in the
+other languages and platforms supported by FlatBuffers, as illustrated in the `example.dart` in the
 examples folder.
 
-Additional documentation and examples are available [at the FlatBuffers site](https://google.github.io/flatbuffers/index.html)
+For more details and documentation, head over to the official site and read the
+[Tutorial](https://google.github.io/flatbuffers/flatbuffers_guide_tutorial.html) and how to
+[use FlatBuffers in Dart](https://google.github.io/flatbuffers/flatbuffers_guide_use_dart.html).
+
+## Dart 2.0 notes
+Version 2.0.5 ships with it's own custom build of `flatc` because this is an extraordinary release to catch-up
+with FlatBuffers for other platforms. This generator can only generate dart code (to avoid generating code for other platforms which isn't released yet).
+On the other hand, the generated code still produces standard binary FlatBuffers compatible with other languages.
+In other words: only `flatc --dart ...` works with this generator, but your app will be able to produce and read standard binary (`Uint8List`) FlatBuffers that are fully compotible with other languages supporting FlatBuffers (e.g. Java, C++, ...).
+
+In the future a common `flatc` binary for all platforms would be shipped through GitHub release page instead.

dart/analysis_options.yaml

@@ -0,0 +1 @@
+include: package:lints/recommended.yaml

dart/example/example.dart

@@ -15,7 +15,7 @@
  */
 
 import 'package:flat_buffers/flat_buffers.dart' as fb;
-import './monster_my_game.sample_generated.dart' as myGame;
+import './monster_my_game.sample_generated.dart' as my_game;
 
 // Example how to use FlatBuffers to create and read binary buffers.
 
@@ -25,27 +25,27 @@ void main() {
 }
 
 void builderTest() {
-  final builder = new fb.Builder(initialSize: 1024);
+  final builder = fb.Builder(initialSize: 1024);
-  final int weaponOneName = builder.writeString("Sword");
+  final int? weaponOneName = builder.writeString("Sword");
   final int weaponOneDamage = 3;
 
-  final int weaponTwoName = builder.writeString("Axe");
+  final int? weaponTwoName = builder.writeString("Axe");
   final int weaponTwoDamage = 5;
 
-  final swordBuilder = new myGame.WeaponBuilder(builder)
+  final swordBuilder = my_game.WeaponBuilder(builder)
     ..begin()
     ..addNameOffset(weaponOneName)
     ..addDamage(weaponOneDamage);
   final int sword = swordBuilder.finish();
 
-  final axeBuilder = new myGame.WeaponBuilder(builder)
+  final axeBuilder = my_game.WeaponBuilder(builder)
     ..begin()
     ..addNameOffset(weaponTwoName)
     ..addDamage(weaponTwoDamage);
   final int axe = axeBuilder.finish();
 
   // Serialize a name for our monster, called "Orc".
-  final int name = builder.writeString('Orc');
+  final int? name = builder.writeString('Orc');
 
   // Create a list representing the inventory of the Orc. Each number
   // could correspond to an item that can be claimed after he is slain.
@@ -54,7 +54,7 @@ void builderTest() {
   final weapons = builder.writeList([sword, axe]);
 
   // Struct builders are very easy to reuse.
-  final vec3Builder = new myGame.Vec3Builder(builder);
+  final vec3Builder = my_game.Vec3Builder(builder);
 
   vec3Builder.finish(4.0, 5.0, 6.0);
   vec3Builder.finish(1.0, 2.0, 3.0);
@@ -62,21 +62,21 @@ void builderTest() {
   final int hp = 300;
   final int mana = 150;
 
-  final monster = new myGame.MonsterBuilder(builder)
+  final monster = my_game.MonsterBuilder(builder)
     ..begin()
     ..addNameOffset(name)
     ..addInventoryOffset(inventory)
     ..addWeaponsOffset(weapons)
-    ..addEquippedType(myGame.EquipmentTypeId.Weapon)
+    ..addEquippedType(my_game.EquipmentTypeId.Weapon)
     ..addEquippedOffset(axe)
     ..addHp(hp)
     ..addMana(mana)
     ..addPos(vec3Builder.finish(1.0, 2.0, 3.0))
-    ..addColor(myGame.Color.Red);
+    ..addColor(my_game.Color.Red);
 
   final int monsteroff = monster.finish();
-  final buffer = builder.finish(monsteroff);
+  builder.finish(monsteroff);
-  if (verify(buffer)) {
+  if (verify(builder.buffer)) {
     print(
         "The FlatBuffer was successfully created with a builder and verified!");
   }
@@ -85,17 +85,17 @@ void builderTest() {
 void objectBuilderTest() {
   // Create the builder here so we can use it for both weapons and equipped
   // the actual data will only be written to the buffer once.
-  var axe = new myGame.WeaponObjectBuilder(name: 'Axe', damage: 5);
+  var axe = my_game.WeaponObjectBuilder(name: 'Axe', damage: 5);
 
-  var monsterBuilder = new myGame.MonsterObjectBuilder(
+  var monsterBuilder = my_game.MonsterObjectBuilder(
-    pos: new myGame.Vec3ObjectBuilder(x: 1.0, y: 2.0, z: 3.0),
+    pos: my_game.Vec3ObjectBuilder(x: 1.0, y: 2.0, z: 3.0),
     mana: 150,
     hp: 300,
     name: 'Orc',
     inventory: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
-    color: myGame.Color.Red,
+    color: my_game.Color.Red,
-    weapons: [new myGame.WeaponObjectBuilder(name: 'Sword', damage: 3), axe],
+    weapons: [my_game.WeaponObjectBuilder(name: 'Sword', damage: 3), axe],
-    equippedType: myGame.EquipmentTypeId.Weapon,
+    equippedType: my_game.EquipmentTypeId.Weapon,
     equipped: axe,
   );
 
@@ -114,7 +114,7 @@ void objectBuilderTest() {
 
 bool verify(List<int> buffer) {
   // Get access to the root:
-  var monster = new myGame.Monster(buffer);
+  var monster = my_game.Monster(buffer);
 
   // Get and test some scalar types from the FlatBuffer.
   assert(monster.hp == 80);
@@ -122,31 +122,29 @@ bool verify(List<int> buffer) {
   assert(monster.name == "MyMonster");
 
   // Get and test a field of the FlatBuffer's `struct`.
-  var pos = monster.pos;
+  var pos = monster.pos!;
-  assert(pos != null);
   assert(pos.z == 3.0);
 
   // Get a test an element from the `inventory` FlatBuffer's `vector`.
-  var inv = monster.inventory;
+  var inv = monster.inventory!;
-  assert(inv != null);
   assert(inv.length == 10);
   assert(inv[9] == 9);
 
   // Get and test the `weapons` FlatBuffers's `vector`.
-  var expected_weapon_names = ["Sword", "Axe"];
+  var expectedWeaponNames = ["Sword", "Axe"];
-  var expected_weapon_damages = [3, 5];
+  var expectedWeaponDamages = [3, 5];
-  var weps = monster.weapons;
+  var weps = monster.weapons!;
   for (int i = 0; i < weps.length; i++) {
-    assert(weps[i].name == expected_weapon_names[i]);
+    assert(weps[i].name == expectedWeaponNames[i]);
-    assert(weps[i].damage == expected_weapon_damages[i]);
+    assert(weps[i].damage == expectedWeaponDamages[i]);
   }
 
   // Get and test the `Equipment` union (`equipped` field).
-  assert(monster.equippedType.value == myGame.EquipmentTypeId.Weapon.value);
+  assert(monster.equippedType!.value == my_game.EquipmentTypeId.Weapon.value);
-  assert(monster.equippedType == myGame.EquipmentTypeId.Weapon);
+  assert(monster.equippedType == my_game.EquipmentTypeId.Weapon);
 
-  assert(monster.equipped is myGame.Weapon);
+  assert(monster.equipped is my_game.Weapon);
-  var equipped = monster.equipped as myGame.Weapon;
+  var equipped = monster.equipped as my_game.Weapon;
   assert(equipped.name == "Axe");
   assert(equipped.damage == 5);
 

dart/example/monster_my_game.sample_generated.dart

@@ -1,5 +1,5 @@
 // automatically generated by the FlatBuffers compiler, do not modify
-// ignore_for_file: unused_import, unused_field, unused_local_variable
+// ignore_for_file: unused_import, unused_field, unused_element, unused_local_variable
 
 library my_game.sample;
 
@@ -12,23 +12,29 @@ class Color {
   const Color._(this.value);
 
   factory Color.fromValue(int value) {
-    if (value == null) value = 0;
+    final result = values[value];
-    if (!values.containsKey(value)) {
+    if (result == null) {
-      throw new StateError('Invalid value $value for bit flag enum Color');
+      throw StateError('Invalid value $value for bit flag enum Color');
     }
-    return values[value];
+    return result;
   }
 
+  static Color? _createOrNull(int? value) => 
+      value == null ? null : Color.fromValue(value);
+
   static const int minValue = 0;
   static const int maxValue = 2;
   static bool containsValue(int value) => values.containsKey(value);
 
-  static const Color Red = const Color._(0);
+  static const Color Red = Color._(0);
-  static const Color Green = const Color._(1);
+  static const Color Green = Color._(1);
-  static const Color Blue = const Color._(2);
+  static const Color Blue = Color._(2);
-  static const Map<int,Color> values = {0: Red,1: Green,2: Blue,};
+  static const Map<int, Color> values = {
+    0: Red,
+    1: Green,
+    2: Blue};
 
-  static const fb.Reader<Color> reader = const _ColorReader();
+  static const fb.Reader<Color> reader = _ColorReader();
 
   @override
   String toString() {
@@ -44,7 +50,7 @@ class _ColorReader extends fb.Reader<Color> {
 
   @override
   Color read(fb.BufferContext bc, int offset) =>
-      new Color.fromValue(const fb.Int8Reader().read(bc, offset));
+      Color.fromValue(const fb.Int8Reader().read(bc, offset));
 }
 
 class EquipmentTypeId {
@@ -52,22 +58,27 @@ class EquipmentTypeId {
   const EquipmentTypeId._(this.value);
 
   factory EquipmentTypeId.fromValue(int value) {
-    if (value == null) value = 0;
+    final result = values[value];
-    if (!values.containsKey(value)) {
+    if (result == null) {
-      throw new StateError('Invalid value $value for bit flag enum EquipmentTypeId');
+      throw StateError('Invalid value $value for bit flag enum EquipmentTypeId');
     }
-    return values[value];
+    return result;
   }
 
+  static EquipmentTypeId? _createOrNull(int? value) => 
+      value == null ? null : EquipmentTypeId.fromValue(value);
+
   static const int minValue = 0;
   static const int maxValue = 1;
   static bool containsValue(int value) => values.containsKey(value);
 
-  static const EquipmentTypeId NONE = const EquipmentTypeId._(0);
+  static const EquipmentTypeId NONE = EquipmentTypeId._(0);
-  static const EquipmentTypeId Weapon = const EquipmentTypeId._(1);
+  static const EquipmentTypeId Weapon = EquipmentTypeId._(1);
-  static const Map<int,EquipmentTypeId> values = {0: NONE,1: Weapon,};
+  static const Map<int, EquipmentTypeId> values = {
+    0: NONE,
+    1: Weapon};
 
-  static const fb.Reader<EquipmentTypeId> reader = const _EquipmentTypeIdReader();
+  static const fb.Reader<EquipmentTypeId> reader = _EquipmentTypeIdReader();
 
   @override
   String toString() {
@@ -83,13 +94,13 @@ class _EquipmentTypeIdReader extends fb.Reader<EquipmentTypeId> {
 
   @override
   EquipmentTypeId read(fb.BufferContext bc, int offset) =>
-      new EquipmentTypeId.fromValue(const fb.Uint8Reader().read(bc, offset));
+      EquipmentTypeId.fromValue(const fb.Uint8Reader().read(bc, offset));
 }
 
 class Vec3 {
   Vec3._(this._bc, this._bcOffset);
 
-  static const fb.Reader<Vec3> reader = const _Vec3Reader();
+  static const fb.Reader<Vec3> reader = _Vec3Reader();
 
   final fb.BufferContext _bc;
   final int _bcOffset;
@@ -112,13 +123,11 @@ class _Vec3Reader extends fb.StructReader<Vec3> {
 
   @override
   Vec3 createObject(fb.BufferContext bc, int offset) => 
-    new Vec3._(bc, offset);
+    Vec3._(bc, offset);
 }
 
 class Vec3Builder {
-  Vec3Builder(this.fbBuilder) {
+  Vec3Builder(this.fbBuilder);
-    assert(fbBuilder != null);
-  }
 
   final fb.Builder fbBuilder;
 
@@ -137,9 +146,9 @@ class Vec3ObjectBuilder extends fb.ObjectBuilder {
   final double _z;
 
   Vec3ObjectBuilder({
-    double x,
+    required double x,
-    double y,
+    required double y,
-    double z,
+    required double z,
   })
       : _x = x,
         _y = y,
@@ -147,10 +156,7 @@ class Vec3ObjectBuilder extends fb.ObjectBuilder {
 
   /// Finish building, and store into the [fbBuilder].
   @override
-  int finish(
+  int finish(fb.Builder fbBuilder) {
-    fb.Builder fbBuilder) {
-    assert(fbBuilder != null);
-
     fbBuilder.putFloat32(_z);
     fbBuilder.putFloat32(_y);
     fbBuilder.putFloat32(_x);
@@ -159,39 +165,39 @@ class Vec3ObjectBuilder extends fb.ObjectBuilder {
 
   /// Convenience method to serialize to byte list.
   @override
-  Uint8List toBytes([String fileIdentifier]) {
+  Uint8List toBytes([String? fileIdentifier]) {
-    fb.Builder fbBuilder = new fb.Builder();
+    final fbBuilder = fb.Builder(deduplicateTables: false);
-    int offset = finish(fbBuilder);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
-    return fbBuilder.finish(offset, fileIdentifier);
+    return fbBuilder.buffer;
   }
 }
 class Monster {
   Monster._(this._bc, this._bcOffset);
   factory Monster(List<int> bytes) {
-    fb.BufferContext rootRef = new fb.BufferContext.fromBytes(bytes);
+    final rootRef = fb.BufferContext.fromBytes(bytes);
     return reader.read(rootRef, 0);
   }
 
-  static const fb.Reader<Monster> reader = const _MonsterReader();
+  static const fb.Reader<Monster> reader = _MonsterReader();
 
   final fb.BufferContext _bc;
   final int _bcOffset;
 
-  Vec3 get pos => Vec3.reader.vTableGet(_bc, _bcOffset, 4, null);
+  Vec3? get pos => Vec3.reader.vTableGetNullable(_bc, _bcOffset, 4);
   int get mana => const fb.Int16Reader().vTableGet(_bc, _bcOffset, 6, 150);
   int get hp => const fb.Int16Reader().vTableGet(_bc, _bcOffset, 8, 100);
-  String get name => const fb.StringReader().vTableGet(_bc, _bcOffset, 10, null);
+  String? get name => const fb.StringReader().vTableGetNullable(_bc, _bcOffset, 10);
-  List<int> get inventory => const fb.ListReader<int>(const fb.Uint8Reader()).vTableGet(_bc, _bcOffset, 14, null);
+  List<int>? get inventory => const fb.Uint8ListReader().vTableGetNullable(_bc, _bcOffset, 14);
-  Color get color => new Color.fromValue(const fb.Int8Reader().vTableGet(_bc, _bcOffset, 16, 2));
+  Color get color => Color.fromValue(const fb.Int8Reader().vTableGet(_bc, _bcOffset, 16, 2));
-  List<Weapon> get weapons => const fb.ListReader<Weapon>(Weapon.reader).vTableGet(_bc, _bcOffset, 18, null);
+  List<Weapon>? get weapons => const fb.ListReader<Weapon>(Weapon.reader).vTableGetNullable(_bc, _bcOffset, 18);
-  EquipmentTypeId get equippedType => new EquipmentTypeId.fromValue(const fb.Uint8Reader().vTableGet(_bc, _bcOffset, 20, 0));
+  EquipmentTypeId? get equippedType => EquipmentTypeId._createOrNull(const fb.Uint8Reader().vTableGetNullable(_bc, _bcOffset, 20));
   dynamic get equipped {
     switch (equippedType?.value) {
-      case 1: return Weapon.reader.vTableGet(_bc, _bcOffset, 22, null);
+      case 1: return Weapon.reader.vTableGetNullable(_bc, _bcOffset, 22);
       default: return null;
     }
   }
-  List<Vec3> get path => const fb.ListReader<Vec3>(Vec3.reader).vTableGet(_bc, _bcOffset, 24, null);
+  List<Vec3>? get path => const fb.ListReader<Vec3>(Vec3.reader).vTableGetNullable(_bc, _bcOffset, 24);
 
   @override
   String toString() {
@@ -204,57 +210,55 @@ class _MonsterReader extends fb.TableReader<Monster> {
 
   @override
   Monster createObject(fb.BufferContext bc, int offset) => 
-    new Monster._(bc, offset);
+    Monster._(bc, offset);
 }
 
 class MonsterBuilder {
-  MonsterBuilder(this.fbBuilder) {
+  MonsterBuilder(this.fbBuilder);
-    assert(fbBuilder != null);
-  }
 
   final fb.Builder fbBuilder;
 
   void begin() {
-    fbBuilder.startTable();
+    fbBuilder.startTable(10);
   }
 
   int addPos(int offset) {
     fbBuilder.addStruct(0, offset);
     return fbBuilder.offset;
   }
-  int addMana(int mana) {
+  int addMana(int? mana) {
     fbBuilder.addInt16(1, mana);
     return fbBuilder.offset;
   }
-  int addHp(int hp) {
+  int addHp(int? hp) {
     fbBuilder.addInt16(2, hp);
     return fbBuilder.offset;
   }
-  int addNameOffset(int offset) {
+  int addNameOffset(int? offset) {
     fbBuilder.addOffset(3, offset);
     return fbBuilder.offset;
   }
-  int addInventoryOffset(int offset) {
+  int addInventoryOffset(int? offset) {
     fbBuilder.addOffset(5, offset);
     return fbBuilder.offset;
   }
-  int addColor(Color color) {
+  int addColor(Color? color) {
     fbBuilder.addInt8(6, color?.value);
     return fbBuilder.offset;
   }
-  int addWeaponsOffset(int offset) {
+  int addWeaponsOffset(int? offset) {
     fbBuilder.addOffset(7, offset);
     return fbBuilder.offset;
   }
-  int addEquippedType(EquipmentTypeId equippedType) {
+  int addEquippedType(EquipmentTypeId? equippedType) {
     fbBuilder.addUint8(8, equippedType?.value);
     return fbBuilder.offset;
   }
-  int addEquippedOffset(int offset) {
+  int addEquippedOffset(int? offset) {
     fbBuilder.addOffset(9, offset);
     return fbBuilder.offset;
   }
-  int addPathOffset(int offset) {
+  int addPathOffset(int? offset) {
     fbBuilder.addOffset(10, offset);
     return fbBuilder.offset;
   }
@@ -265,28 +269,28 @@ class MonsterBuilder {
 }
 
 class MonsterObjectBuilder extends fb.ObjectBuilder {
-  final Vec3ObjectBuilder _pos;
+  final Vec3ObjectBuilder? _pos;
-  final int _mana;
+  final int? _mana;
-  final int _hp;
+  final int? _hp;
-  final String _name;
+  final String? _name;
-  final List<int> _inventory;
+  final List<int>? _inventory;
-  final Color _color;
+  final Color? _color;
-  final List<WeaponObjectBuilder> _weapons;
+  final List<WeaponObjectBuilder>? _weapons;
-  final EquipmentTypeId _equippedType;
+  final EquipmentTypeId? _equippedType;
   final dynamic _equipped;
-  final List<Vec3ObjectBuilder> _path;
+  final List<Vec3ObjectBuilder>? _path;
 
   MonsterObjectBuilder({
-    Vec3ObjectBuilder pos,
+    Vec3ObjectBuilder? pos,
-    int mana,
+    int? mana,
-    int hp,
+    int? hp,
-    String name,
+    String? name,
-    List<int> inventory,
+    List<int>? inventory,
-    Color color,
+    Color? color,
-    List<WeaponObjectBuilder> weapons,
+    List<WeaponObjectBuilder>? weapons,
-    EquipmentTypeId equippedType,
+    EquipmentTypeId? equippedType,
     dynamic equipped,
-    List<Vec3ObjectBuilder> path,
+    List<Vec3ObjectBuilder>? path,
   })
       : _pos = pos,
         _mana = mana,
@@ -301,68 +305,53 @@ class MonsterObjectBuilder extends fb.ObjectBuilder {
 
   /// Finish building, and store into the [fbBuilder].
   @override
-  int finish(
+  int finish(fb.Builder fbBuilder) {
-    fb.Builder fbBuilder) {
+    final int? nameOffset = _name == null ? null
-    assert(fbBuilder != null);
+        : fbBuilder.writeString(_name!);
-    final int nameOffset = fbBuilder.writeString(_name);
+    final int? inventoryOffset = _inventory == null ? null
-    final int inventoryOffset = _inventory?.isNotEmpty == true
+        : fbBuilder.writeListUint8(_inventory!);
-        ? fbBuilder.writeListUint8(_inventory)
+    final int? weaponsOffset = _weapons == null ? null
-        : null;
+        : fbBuilder.writeList(_weapons!.map((b) => b.getOrCreateOffset(fbBuilder)).toList());
-    final int weaponsOffset = _weapons?.isNotEmpty == true
+    final int? equippedOffset = _equipped?.getOrCreateOffset(fbBuilder);
-        ? fbBuilder.writeList(_weapons.map((b) => b.getOrCreateOffset(fbBuilder)).toList())
+    final int? pathOffset = _path == null ? null
-        : null;
+        : fbBuilder.writeListOfStructs(_path!);
-    final int equippedOffset = _equipped?.getOrCreateOffset(fbBuilder);
+    fbBuilder.startTable(10);
-    final int pathOffset = _path?.isNotEmpty == true
-        ? fbBuilder.writeListOfStructs(_path)
-        : null;
-
-    fbBuilder.startTable();
     if (_pos != null) {
-      fbBuilder.addStruct(0, _pos.finish(fbBuilder));
+      fbBuilder.addStruct(0, _pos!.finish(fbBuilder));
     }
     fbBuilder.addInt16(1, _mana);
     fbBuilder.addInt16(2, _hp);
-    if (nameOffset != null) {
+    fbBuilder.addOffset(3, nameOffset);
-      fbBuilder.addOffset(3, nameOffset);
+    fbBuilder.addOffset(5, inventoryOffset);
-    }
-    if (inventoryOffset != null) {
-      fbBuilder.addOffset(5, inventoryOffset);
-    }
     fbBuilder.addInt8(6, _color?.value);
-    if (weaponsOffset != null) {
+    fbBuilder.addOffset(7, weaponsOffset);
-      fbBuilder.addOffset(7, weaponsOffset);
-    }
     fbBuilder.addUint8(8, _equippedType?.value);
-    if (equippedOffset != null) {
+    fbBuilder.addOffset(9, equippedOffset);
-      fbBuilder.addOffset(9, equippedOffset);
+    fbBuilder.addOffset(10, pathOffset);
-    }
-    if (pathOffset != null) {
-      fbBuilder.addOffset(10, pathOffset);
-    }
     return fbBuilder.endTable();
   }
 
   /// Convenience method to serialize to byte list.
   @override
-  Uint8List toBytes([String fileIdentifier]) {
+  Uint8List toBytes([String? fileIdentifier]) {
-    fb.Builder fbBuilder = new fb.Builder();
+    final fbBuilder = fb.Builder(deduplicateTables: false);
-    int offset = finish(fbBuilder);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
-    return fbBuilder.finish(offset, fileIdentifier);
+    return fbBuilder.buffer;
   }
 }
 class Weapon {
   Weapon._(this._bc, this._bcOffset);
   factory Weapon(List<int> bytes) {
-    fb.BufferContext rootRef = new fb.BufferContext.fromBytes(bytes);
+    final rootRef = fb.BufferContext.fromBytes(bytes);
     return reader.read(rootRef, 0);
   }
 
-  static const fb.Reader<Weapon> reader = const _WeaponReader();
+  static const fb.Reader<Weapon> reader = _WeaponReader();
 
   final fb.BufferContext _bc;
   final int _bcOffset;
 
-  String get name => const fb.StringReader().vTableGet(_bc, _bcOffset, 4, null);
+  String? get name => const fb.StringReader().vTableGetNullable(_bc, _bcOffset, 4);
   int get damage => const fb.Int16Reader().vTableGet(_bc, _bcOffset, 6, 0);
 
   @override
@@ -376,25 +365,23 @@ class _WeaponReader extends fb.TableReader<Weapon> {
 
   @override
   Weapon createObject(fb.BufferContext bc, int offset) => 
-    new Weapon._(bc, offset);
+    Weapon._(bc, offset);
 }
 
 class WeaponBuilder {
-  WeaponBuilder(this.fbBuilder) {
+  WeaponBuilder(this.fbBuilder);
-    assert(fbBuilder != null);
-  }
 
   final fb.Builder fbBuilder;
 
   void begin() {
-    fbBuilder.startTable();
+    fbBuilder.startTable(2);
   }
 
-  int addNameOffset(int offset) {
+  int addNameOffset(int? offset) {
     fbBuilder.addOffset(0, offset);
     return fbBuilder.offset;
   }
-  int addDamage(int damage) {
+  int addDamage(int? damage) {
     fbBuilder.addInt16(1, damage);
     return fbBuilder.offset;
   }
@@ -405,36 +392,32 @@ class WeaponBuilder {
 }
 
 class WeaponObjectBuilder extends fb.ObjectBuilder {
-  final String _name;
+  final String? _name;
-  final int _damage;
+  final int? _damage;
 
   WeaponObjectBuilder({
-    String name,
+    String? name,
-    int damage,
+    int? damage,
   })
       : _name = name,
         _damage = damage;
 
   /// Finish building, and store into the [fbBuilder].
   @override
-  int finish(
+  int finish(fb.Builder fbBuilder) {
-    fb.Builder fbBuilder) {
+    final int? nameOffset = _name == null ? null
-    assert(fbBuilder != null);
+        : fbBuilder.writeString(_name!);
-    final int nameOffset = fbBuilder.writeString(_name);
+    fbBuilder.startTable(2);
-
+    fbBuilder.addOffset(0, nameOffset);
-    fbBuilder.startTable();
-    if (nameOffset != null) {
-      fbBuilder.addOffset(0, nameOffset);
-    }
     fbBuilder.addInt16(1, _damage);
     return fbBuilder.endTable();
   }
 
   /// Convenience method to serialize to byte list.
   @override
-  Uint8List toBytes([String fileIdentifier]) {
+  Uint8List toBytes([String? fileIdentifier]) {
-    fb.Builder fbBuilder = new fb.Builder();
+    final fbBuilder = fb.Builder(deduplicateTables: false);
-    int offset = finish(fbBuilder);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
-    return fbBuilder.finish(offset, fileIdentifier);
+    return fbBuilder.buffer;
   }
 }

dart/lib/src/builder.dart

@@ -5,38 +5,27 @@ import 'types.dart';
 
 /// The main builder class for creation of a FlexBuffer.
 class Builder {
-  ByteData _buffer;
+  final ByteData _buffer;
-  List<_StackValue> _stack;
+  List<_StackValue> _stack = [];
-  List<_StackPointer> _stackPointers;
+  List<_StackPointer> _stackPointers = [];
-  int _offset;
+  int _offset = 0;
-  bool _finished;
+  bool _finished = false;
-  Map<String, _StackValue> _stringCache;
+  final Map<String, _StackValue> _stringCache = {};
-  Map<String, _StackValue> _keyCache;
+  final Map<String, _StackValue> _keyCache = {};
-  Map<_KeysHash, _StackValue> _keyVectorCache;
+  final Map<_KeysHash, _StackValue> _keyVectorCache = {};
-  Map<int, _StackValue> _indirectIntCache;
+  final Map<int, _StackValue> _indirectIntCache = {};
-  Map<double, _StackValue> _indirectDoubleCache;
+  final Map<double, _StackValue> _indirectDoubleCache = {};
 
   /// Instantiate the builder if you intent to gradually build up the buffer by calling
   /// add... methods and calling [finish] to receive the the resulting byte array.
   ///
   /// The default size of internal buffer is set to 2048. Provide a different value in order to avoid buffer copies.
-  Builder({int size = 2048}) {
+  Builder({int size = 2048}) : _buffer = ByteData(size);
-    _buffer = ByteData(size);
-    _stack = [];
-    _stackPointers = [];
-    _offset = 0;
-    _finished = false;
-    _stringCache = {};
-    _keyCache = {};
-    _keyVectorCache = {};
-    _indirectIntCache = {};
-    _indirectDoubleCache = {};
-  }
 
   /// Use this method in order to turn an object into a FlexBuffer directly.
   ///
   /// Use the manual instantiation of the [Builder] and gradual addition of values, if performance is more important than convenience.
-  static ByteBuffer buildFromObject(Object value) {
+  static ByteBuffer buildFromObject(Object? value) {
     final builder = Builder();
     builder._add(value);
     final buffer = builder.finish();
@@ -45,7 +34,7 @@ class Builder {
     return byteData.buffer;
   }
 
-  void _add(Object value) {
+  void _add(Object? value) {
     if (value == null) {
       addNull();
     } else if (value is bool) {
@@ -81,32 +70,32 @@ class Builder {
   /// Specifically useful when building up a vector where values can be null.
   void addNull() {
     _integrityCheckOnValueAddition();
-    _stack.add(_StackValue.WithNull());
+    _stack.add(_StackValue.withNull());
   }
 
   /// Adds a string value.
   void addInt(int value) {
     _integrityCheckOnValueAddition();
-    _stack.add(_StackValue.WithInt(value));
+    _stack.add(_StackValue.withInt(value));
   }
 
   /// Adds a bool value.
   void addBool(bool value) {
     _integrityCheckOnValueAddition();
-    _stack.add(_StackValue.WithBool(value));
+    _stack.add(_StackValue.withBool(value));
   }
 
   /// Adds a double value.
   void addDouble(double value) {
     _integrityCheckOnValueAddition();
-    _stack.add(_StackValue.WithDouble(value));
+    _stack.add(_StackValue.withDouble(value));
   }
 
   /// Adds a string value.
   void addString(String value) {
     _integrityCheckOnValueAddition();
     if (_stringCache.containsKey(value)) {
-      _stack.add(_stringCache[value]);
+      _stack.add(_stringCache[value]!);
       return;
     }
     final utf8String = utf8.encode(value);
@@ -118,7 +107,8 @@ class Builder {
     final newOffset = _newOffset(length + 1);
     _pushBuffer(utf8String);
     _offset = newOffset;
-    final stackValue = _StackValue.WithOffset(stringOffset, ValueType.String, bitWidth);
+    final stackValue =
+        _StackValue.withOffset(stringOffset, ValueType.String, bitWidth);
     _stack.add(stackValue);
     _stringCache[value] = stackValue;
   }
@@ -129,7 +119,7 @@ class Builder {
   void addKey(String value) {
     _integrityCheckOnKeyAddition();
     if (_keyCache.containsKey(value)) {
-      _stack.add(_keyCache[value]);
+      _stack.add(_keyCache[value]!);
       return;
     }
     final utf8String = utf8.encode(value);
@@ -138,7 +128,8 @@ class Builder {
     final newOffset = _newOffset(length + 1);
     _pushBuffer(utf8String);
     _offset = newOffset;
-    final stackValue = _StackValue.WithOffset(keyOffset, ValueType.Key, BitWidth.width8);
+    final stackValue =
+        _StackValue.withOffset(keyOffset, ValueType.Key, BitWidth.width8);
     _stack.add(stackValue);
     _keyCache[value] = stackValue;
   }
@@ -156,7 +147,8 @@ class Builder {
     final newOffset = _newOffset(length);
     _pushBuffer(value.asUint8List());
     _offset = newOffset;
-    final stackValue = _StackValue.WithOffset(blobOffset, ValueType.Blob, bitWidth);
+    final stackValue =
+        _StackValue.withOffset(blobOffset, ValueType.Blob, bitWidth);
     _stack.add(stackValue);
   }
 
@@ -169,15 +161,16 @@ class Builder {
   void addIntIndirectly(int value, {bool cache = false}) {
     _integrityCheckOnValueAddition();
     if (_indirectIntCache.containsKey(value)) {
-      _stack.add(_indirectIntCache[value]);
+      _stack.add(_indirectIntCache[value]!);
       return;
     }
-    final stackValue = _StackValue.WithInt(value);
+    final stackValue = _StackValue.withInt(value);
     final byteWidth = _align(stackValue.width);
     final newOffset = _newOffset(byteWidth);
     final valueOffset = _offset;
     _pushBuffer(stackValue.asU8List(stackValue.width));
-    final stackOffset = _StackValue.WithOffset(valueOffset, ValueType.IndirectInt, stackValue.width);
+    final stackOffset = _StackValue.withOffset(
+        valueOffset, ValueType.IndirectInt, stackValue.width);
     _stack.add(stackOffset);
     _offset = newOffset;
     if (cache) {
@@ -193,15 +186,16 @@ class Builder {
   void addDoubleIndirectly(double value, {bool cache = false}) {
     _integrityCheckOnValueAddition();
     if (cache && _indirectDoubleCache.containsKey(value)) {
-      _stack.add(_indirectDoubleCache[value]);
+      _stack.add(_indirectDoubleCache[value]!);
       return;
     }
-    final stackValue = _StackValue.WithDouble(value);
+    final stackValue = _StackValue.withDouble(value);
     final byteWidth = _align(stackValue.width);
     final newOffset = _newOffset(byteWidth);
     final valueOffset = _offset;
     _pushBuffer(stackValue.asU8List(stackValue.width));
-    final stackOffset = _StackValue.WithOffset(valueOffset, ValueType.IndirectFloat, stackValue.width);
+    final stackOffset = _StackValue.withOffset(
+        valueOffset, ValueType.IndirectFloat, stackValue.width);
     _stack.add(stackOffset);
     _offset = newOffset;
     if (cache) {
@@ -258,8 +252,10 @@ class Builder {
     tmp._offset = _offset;
     tmp._stack = List.from(_stack);
     tmp._stackPointers = List.from(_stackPointers);
-    tmp._buffer.buffer.asUint8List().setAll(0, _buffer.buffer.asUint8List(0, _offset));
+    tmp._buffer.buffer
-    for (var i = 0; i < tmp._stackPointers.length; i++){
+        .asUint8List()
+        .setAll(0, _buffer.buffer.asUint8List(0, _offset));
+    for (var i = 0; i < tmp._stackPointers.length; i++) {
       tmp.end();
     }
     final buffer = tmp.finish();
@@ -274,7 +270,8 @@ class Builder {
     }
     if (_stackPointers.isNotEmpty && _stackPointers.last.isVector == false) {
       if (_stack.last.type != ValueType.Key) {
-        throw StateError('Adding value to a map before adding a key is prohibited');
+        throw StateError(
+            'Adding value to a map before adding a key is prohibited');
       }
     }
   }
@@ -290,7 +287,8 @@ class Builder {
 
   void _finish() {
     if (_stack.length != 1) {
-      throw StateError('Stack has to be exactly 1, but is ${_stack.length}. You have to end all started vectors and maps, before calling [finish]');
+      throw StateError(
+          'Stack has to be exactly 1, but is ${_stack.length}. You have to end all started vectors and maps, before calling [finish]');
     }
     final value = _stack[0];
     final byteWidth = _align(value.elementWidth(_offset, 0));
@@ -300,7 +298,8 @@ class Builder {
     _finished = true;
   }
 
-  _StackValue _createVector(int start, int vecLength, int step, [_StackValue keys]) {
+  _StackValue _createVector(int start, int vecLength, int step,
+      [_StackValue? keys]) {
     var bitWidth = BitWidthUtil.uwidth(vecLength);
     var prefixElements = 1;
     if (keys != null) {
@@ -327,7 +326,9 @@ class Builder {
       }
     }
     final byteWidth = _align(bitWidth);
-    final fix = typed & ValueTypeUtils.isNumber(vectorType) && vecLength >= 2 && vecLength <= 4;
+    final fix = typed & ValueTypeUtils.isNumber(vectorType) &&
+        vecLength >= 2 &&
+        vecLength <= 4;
     if (keys != null) {
       _writeStackValue(keys, byteWidth);
       _writeUInt(1 << keys.width.index, byteWidth);
@@ -345,13 +346,14 @@ class Builder {
       }
     }
     if (keys != null) {
-      return _StackValue.WithOffset(vecOffset, ValueType.Map, bitWidth);
+      return _StackValue.withOffset(vecOffset, ValueType.Map, bitWidth);
     }
     if (typed) {
-      final vType = ValueTypeUtils.toTypedVector(vectorType, fix ? vecLength : 0);
+      final vType =
-      return _StackValue.WithOffset(vecOffset, vType, bitWidth);
+          ValueTypeUtils.toTypedVector(vectorType, fix ? vecLength : 0);
+      return _StackValue.withOffset(vecOffset, vType, bitWidth);
     }
-    return _StackValue.WithOffset(vecOffset, ValueType.Vector, bitWidth);
+    return _StackValue.withOffset(vecOffset, ValueType.Vector, bitWidth);
   }
 
   void _endVector(_StackPointer pointer) {
@@ -363,12 +365,13 @@ class Builder {
 
   void _sortKeysAndEndMap(_StackPointer pointer) {
     if (((_stack.length - pointer.stackPosition) & 1) == 1) {
-      throw StateError('The stack needs to hold key value pairs (even number of elements). Check if you combined [addKey] with add... method calls properly.');
+      throw StateError(
+          'The stack needs to hold key value pairs (even number of elements). Check if you combined [addKey] with add... method calls properly.');
     }
 
     var sorted = true;
     for (var i = pointer.stackPosition; i < _stack.length - 2; i += 2) {
-      if (_shouldFlip(_stack[i], _stack[i+2])) {
+      if (_shouldFlip(_stack[i], _stack[i + 2])) {
         sorted = false;
         break;
       }
@@ -399,31 +402,33 @@ class Builder {
     final vecLength = (_stack.length - pointer.stackPosition) >> 1;
     final offsets = <int>[];
     for (var i = pointer.stackPosition; i < _stack.length; i += 2) {
-      offsets.add(_stack[i].offset);
+      offsets.add(_stack[i].offset!);
     }
     final keysHash = _KeysHash(offsets);
-    var keysStackValue;
+    _StackValue? keysStackValue;
     if (_keyVectorCache.containsKey(keysHash)) {
       keysStackValue = _keyVectorCache[keysHash];
     } else {
       keysStackValue = _createVector(pointer.stackPosition, vecLength, 2);
       _keyVectorCache[keysHash] = keysStackValue;
     }
-    final vec = _createVector(pointer.stackPosition + 1, vecLength, 2, keysStackValue);
+    final vec =
+        _createVector(pointer.stackPosition + 1, vecLength, 2, keysStackValue);
     _stack.removeRange(pointer.stackPosition, _stack.length);
     _stack.add(vec);
   }
 
   bool _shouldFlip(_StackValue v1, _StackValue v2) {
     if (v1.type != ValueType.Key || v2.type != ValueType.Key) {
-      throw StateError('Stack values are not keys $v1 | $v2. Check if you combined [addKey] with add... method calls properly.');
+      throw StateError(
+          'Stack values are not keys $v1 | $v2. Check if you combined [addKey] with add... method calls properly.');
     }
 
-    var c1, c2;
+    late int c1, c2;
     var index = 0;
     do {
-      c1 = _buffer.getUint8(v1.offset + index);
+      c1 = _buffer.getUint8(v1.offset! + index);
-      c2 = _buffer.getUint8(v2.offset + index);
+      c2 = _buffer.getUint8(v2.offset! + index);
       if (c2 < c1) return true;
       if (c1 < c2) return false;
       index += 1;
@@ -440,11 +445,12 @@ class Builder {
   void _writeStackValue(_StackValue value, int byteWidth) {
     final newOffset = _newOffset(byteWidth);
     if (value.isOffset) {
-      final relativeOffset = _offset - value.offset;
+      final relativeOffset = _offset - value.offset!;
       if (byteWidth == 8 || relativeOffset < (1 << (byteWidth * 8))) {
         _writeUInt(relativeOffset, byteWidth);
       } else {
-        throw StateError('Unexpected size $byteWidth. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
+        throw StateError(
+            'Unexpected size $byteWidth. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
       }
     } else {
       _pushBuffer(value.asU8List(BitWidthUtil.fromByteWidth(byteWidth)));
@@ -467,16 +473,13 @@ class Builder {
     }
     if (prevSize < size) {
       final newBuf = ByteData(size);
-      newBuf.buffer
+      newBuf.buffer.asUint8List().setAll(0, _buffer.buffer.asUint8List());
-          .asUint8List()
-          .setAll(0, _buffer.buffer.asUint8List());
     }
     return newOffset;
   }
 
   void _pushInt(int value, BitWidth width) {
     switch (width) {
-
       case BitWidth.width8:
         _buffer.setInt8(_offset, value);
         break;
@@ -494,7 +497,6 @@ class Builder {
 
   void _pushUInt(int value, BitWidth width) {
     switch (width) {
-
       case BitWidth.width8:
         _buffer.setUint8(_offset, value);
         break;
@@ -516,37 +518,39 @@ class Builder {
 }
 
 class _StackValue {
-  Object _value;
+  late Object _value;
-  int _offset;
+  int? _offset;
-  ValueType _type;
+  final ValueType _type;
-  BitWidth _width;
+  final BitWidth _width;
-  _StackValue.WithNull() {
+
-    _type = ValueType.Null;
+  _StackValue.withNull()
-    _width = BitWidth.width8;
+      : _type = ValueType.Null,
-  }
+        _width = BitWidth.width8;
-  _StackValue.WithInt(int value) {
+
-    _type = value != null ? ValueType.Int : ValueType.Null;
+  _StackValue.withInt(int value)
-    _width = BitWidthUtil.width(value);
+      : _type = ValueType.Int,
-    _value = value;
+        _width = BitWidthUtil.width(value),
-  }
+        _value = value;
-  _StackValue.WithBool(bool value) {
+
-    _type = value != null ? ValueType.Bool : ValueType.Null;
+  _StackValue.withBool(bool value)
-    _width = BitWidth.width8;
+      : _type = ValueType.Bool,
-    _value = value;
+        _width = BitWidth.width8,
-  }
+        _value = value;
-  _StackValue.WithDouble(double value) {
+
-    _type = value != null ? ValueType.Float : ValueType.Null;
+  _StackValue.withDouble(double value)
-    _width = BitWidthUtil.width(value);
+      : _type = ValueType.Float,
-    _value = value;
+        _width = BitWidthUtil.width(value),
-  }
+        _value = value;
-  _StackValue.WithOffset(int value, ValueType type, BitWidth width) {
+
-    _offset = value;
+  _StackValue.withOffset(int value, ValueType type, BitWidth width)
-    _type = type;
+      : _offset = value,
-    _width = width;
+        _type = type,
-  }
+        _width = width;
 
   BitWidth storedWidth({BitWidth width = BitWidth.width8}) {
-    return ValueTypeUtils.isInline(_type) ? BitWidthUtil.max(_width, width) : _width;
+    return ValueTypeUtils.isInline(_type)
+        ? BitWidthUtil.max(_width, width)
+        : _width;
   }
 
   int storedPackedType({BitWidth width = BitWidth.width8}) {
@@ -555,16 +559,19 @@ class _StackValue {
 
   BitWidth elementWidth(int size, int index) {
     if (ValueTypeUtils.isInline(_type)) return _width;
-    for(var i = 0; i < 4; i++) {
+    final offset = _offset!;
+    for (var i = 0; i < 4; i++) {
       final width = 1 << i;
-      final offsetLoc = size + BitWidthUtil.paddingSize(size, width) + index * width;
+      final bitWidth = BitWidthUtil.uwidth(size +
-      final offset = offsetLoc - _offset;
+          BitWidthUtil.paddingSize(size, width) +
-      final bitWidth = BitWidthUtil.uwidth(offset);
+          index * width -
+          offset);
       if (1 << bitWidth.index == width) {
         return bitWidth;
       }
     }
-    throw StateError('Element is of unknown. Size: $size at index: $index. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
+    throw StateError(
+        'Element is of unknown. Size: $size at index: $index. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
   }
 
   List<int> asU8List(BitWidth width) {
@@ -572,30 +579,30 @@ class _StackValue {
       if (_type == ValueType.Float) {
         if (width == BitWidth.width32) {
           final result = ByteData(4);
-          result.setFloat32(0, _value, Endian.little);
+          result.setFloat32(0, _value as double, Endian.little);
           return result.buffer.asUint8List();
         } else {
           final result = ByteData(8);
-          result.setFloat64(0, _value, Endian.little);
+          result.setFloat64(0, _value as double, Endian.little);
           return result.buffer.asUint8List();
         }
       } else {
-        switch(width) {
+        switch (width) {
           case BitWidth.width8:
             final result = ByteData(1);
-            result.setInt8(0, _value);
+            result.setInt8(0, _value as int);
             return result.buffer.asUint8List();
           case BitWidth.width16:
             final result = ByteData(2);
-            result.setInt16(0, _value, Endian.little);
+            result.setInt16(0, _value as int, Endian.little);
             return result.buffer.asUint8List();
           case BitWidth.width32:
             final result = ByteData(4);
-            result.setInt32(0, _value, Endian.little);
+            result.setInt32(0, _value as int, Endian.little);
             return result.buffer.asUint8List();
           case BitWidth.width64:
             final result = ByteData(8);
-            result.setInt64(0, _value, Endian.little);
+            result.setInt64(0, _value as int, Endian.little);
             return result.buffer.asUint8List();
         }
       }
@@ -607,11 +614,12 @@ class _StackValue {
     }
     if (_type == ValueType.Bool) {
       final result = ByteData(1);
-      result.setInt8(0, _value ? 1 : 0);
+      result.setInt8(0, _value as bool ? 1 : 0);
       return result.buffer.asUint8List();
     }
 
-    throw StateError('Unexpected type: $_type. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
+    throw StateError(
+        'Unexpected type: $_type. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new');
   }
 
   ValueType get type {
@@ -625,7 +633,8 @@ class _StackValue {
   bool get isOffset {
     return !ValueTypeUtils.isInline(_type);
   }
-  int get offset => _offset;
+
+  int? get offset => _offset;
 
   bool get isFloat32 {
     return _type == ValueType.Float && _width == BitWidth.width32;
@@ -635,6 +644,7 @@ class _StackValue {
 class _StackPointer {
   int stackPosition;
   bool isVector;
+
   _StackPointer(this.stackPosition, this.isVector);
 }
 

dart/lib/src/reference.dart

@@ -11,14 +11,15 @@ class Reference {
   final int _offset;
   final BitWidth _parentWidth;
   final String _path;
-  int _byteWidth;
+  final int _byteWidth;
-  ValueType _valueType;
+  final ValueType _valueType;
-  int _length;
+  int? _length;
 
-  Reference._(this._buffer, this._offset, this._parentWidth, int packedType, this._path) {
+  Reference._(
-    _byteWidth = 1 << (packedType & 3);
+      this._buffer, this._offset, this._parentWidth, int packedType, this._path,
-    _valueType = ValueTypeUtils.fromInt(packedType >> 2);
+      [int? byteWidth, ValueType? valueType])
-  }
+      : _byteWidth = byteWidth ?? 1 << (packedType & 3),
+        _valueType = valueType ?? ValueTypeUtils.fromInt(packedType >> 2);
 
   /// Use this method to access the root value of a FlexBuffer.
   static Reference fromBuffer(ByteBuffer buffer) {
@@ -30,31 +31,44 @@ class Reference {
     final byteWidth = byteData.getUint8(len - 1);
     final packedType = byteData.getUint8(len - 2);
     final offset = len - byteWidth - 2;
-    return Reference._(ByteData.view(buffer), offset, BitWidthUtil.fromByteWidth(byteWidth), packedType, "/");
+    return Reference._(ByteData.view(buffer), offset,
+        BitWidthUtil.fromByteWidth(byteWidth), packedType, "/");
   }
 
   /// Returns true if the underlying value is null.
   bool get isNull => _valueType == ValueType.Null;
+
   /// Returns true if the underlying value can be represented as [num].
-  bool get isNum => ValueTypeUtils.isNumber(_valueType) || ValueTypeUtils.isIndirectNumber(_valueType);
+  bool get isNum =>
+      ValueTypeUtils.isNumber(_valueType) ||
+      ValueTypeUtils.isIndirectNumber(_valueType);
+
   /// Returns true if the underlying value was encoded as a float (direct or indirect).
-  bool get isDouble => _valueType == ValueType.Float || _valueType == ValueType.IndirectFloat;
+  bool get isDouble =>
+      _valueType == ValueType.Float || _valueType == ValueType.IndirectFloat;
+
   /// Returns true if the underlying value was encoded as an int or uint (direct or indirect).
   bool get isInt => isNum && !isDouble;
+
   /// Returns true if the underlying value was encoded as a string or a key.
-  bool get isString => _valueType == ValueType.String || _valueType == ValueType.Key;
+  bool get isString =>
+      _valueType == ValueType.String || _valueType == ValueType.Key;
+
   /// Returns true if the underlying value was encoded as a bool.
   bool get isBool => _valueType == ValueType.Bool;
+
   /// Returns true if the underlying value was encoded as a blob.
   bool get isBlob => _valueType == ValueType.Blob;
+
   /// Returns true if the underlying value points to a vector.
   bool get isVector => ValueTypeUtils.isAVector(_valueType);
+
   /// Returns true if the underlying value points to a map.
   bool get isMap => _valueType == ValueType.Map;
 
   /// If this [isBool], returns the bool value. Otherwise, returns null.
-  bool get boolValue {
+  bool? get boolValue {
-    if(_valueType == ValueType.Bool) {
+    if (_valueType == ValueType.Bool) {
       return _readInt(_offset, _parentWidth) != 0;
     }
     return null;
@@ -63,7 +77,7 @@ class Reference {
   /// Returns an [int], if the underlying value can be represented as an int.
   ///
   /// Otherwise returns [null].
-  int get intValue {
+  int? get intValue {
     if (_valueType == ValueType.Int) {
       return _readInt(_offset, _parentWidth);
     }
@@ -82,7 +96,7 @@ class Reference {
   /// Returns [double], if the underlying value [isDouble].
   ///
   /// Otherwise returns [null].
-  double get doubleValue {
+  double? get doubleValue {
     if (_valueType == ValueType.Float) {
       return _readFloat(_offset, _parentWidth);
     }
@@ -95,12 +109,12 @@ class Reference {
   /// Returns [num], if the underlying value is numeric, be it int uint, or float (direct or indirect).
   ///
   /// Otherwise returns [null].
-  num get numValue => doubleValue ?? intValue;
+  num? get numValue => doubleValue ?? intValue;
 
   /// Returns [String] value or null otherwise.
   ///
   /// This method performers a utf8 decoding, as FlexBuffers format stores strings in utf8 encoding.
-  String get stringValue {
+  String? get stringValue {
     if (_valueType == ValueType.String || _valueType == ValueType.Key) {
       return utf8.decode(_buffer.buffer.asUint8List(_indirect, length));
     }
@@ -108,7 +122,7 @@ class Reference {
   }
 
   /// Returns [Uint8List] value or null otherwise.
-  Uint8List get blobValue {
+  Uint8List? get blobValue {
     if (_valueType == ValueType.Blob) {
       return _buffer.buffer.asUint8List(_indirect, length);
     }
@@ -122,22 +136,31 @@ class Reference {
   Reference operator [](Object key) {
     if (key is int && ValueTypeUtils.isAVector(_valueType)) {
       final index = key;
-      if(index >= length || index < 0) {
+      if (index >= length || index < 0) {
-        throw ArgumentError('Key: [$key] is not applicable on: $_path of: $_valueType length: $length');
+        throw ArgumentError(
+            'Key: [$key] is not applicable on: $_path of: $_valueType length: $length');
       }
       final elementOffset = _indirect + index * _byteWidth;
-      final reference = Reference._(_buffer, elementOffset, BitWidthUtil.fromByteWidth(_byteWidth), 0, "$_path[$index]");
+      int packedType = 0;
-      reference._byteWidth = 1;
+      int? byteWidth;
+      ValueType? valueType;
       if (ValueTypeUtils.isTypedVector(_valueType)) {
-        reference._valueType = ValueTypeUtils.typedVectorElementType(_valueType);
+        byteWidth = 1;
-        return reference;
+        valueType = ValueTypeUtils.typedVectorElementType(_valueType);
+      } else if (ValueTypeUtils.isFixedTypedVector(_valueType)) {
+        byteWidth = 1;
+        valueType = ValueTypeUtils.fixedTypedVectorElementType(_valueType);
+      } else {
+        packedType = _buffer.getUint8(_indirect + length * _byteWidth + index);
       }
-      if(ValueTypeUtils.isFixedTypedVector(_valueType)) {
+      return Reference._(
-        reference._valueType = ValueTypeUtils.fixedTypedVectorElementType(_valueType);
+          _buffer,
-        return reference;
+          elementOffset,
-      }
+          BitWidthUtil.fromByteWidth(_byteWidth),
-      final packedType = _buffer.getUint8(_indirect + length * _byteWidth + index);
+          packedType,
-      return Reference._(_buffer, elementOffset, BitWidthUtil.fromByteWidth(_byteWidth), packedType, "$_path[$index]");
+          "$_path[$index]",
+          byteWidth,
+          valueType);
     }
     if (key is String && _valueType == ValueType.Map) {
       final index = _keyIndex(key);
@@ -145,13 +168,14 @@ class Reference {
         return _valueForIndexWithKey(index, key);
       }
     }
-    throw ArgumentError('Key: [$key] is not applicable on: $_path of: $_valueType');
+    throw ArgumentError(
+        'Key: [$key] is not applicable on: $_path of: $_valueType');
   }
 
   /// Get an iterable if the underlying flexBuffer value is a vector.
   /// Otherwise throws an exception.
   Iterable<Reference> get vectorIterable {
-    if(isVector == false) {
+    if (isVector == false) {
       throw UnsupportedError('Value is not a vector. It is: $_valueType');
     }
     return _VectorIterator(this);
@@ -160,7 +184,7 @@ class Reference {
   /// Get an iterable for keys if the underlying flexBuffer value is a map.
   /// Otherwise throws an exception.
   Iterable<String> get mapKeyIterable {
-    if(isMap == false) {
+    if (isMap == false) {
       throw UnsupportedError('Value is not a map. It is: $_valueType');
     }
     return _MapKeyIterator(this);
@@ -169,7 +193,7 @@ class Reference {
   /// Get an iterable for values if the underlying flexBuffer value is a map.
   /// Otherwise throws an exception.
   Iterable<Reference> get mapValueIterable {
-    if(isMap == false) {
+    if (isMap == false) {
       throw UnsupportedError('Value is not a map. It is: $_valueType');
     }
     return _MapValueIterator(this);
@@ -181,59 +205,62 @@ class Reference {
   /// If the underlying value is a vector, or map, the length reflects number of elements / element pairs.
   /// If the values is a string or a blob, the length reflects a number of bytes the value occupies (strings are encoded in utf8 format).
   int get length {
-    if (_length != null) {
+    if (_length == null) {
-      return _length;
+      // needs to be checked before more generic isAVector
-    }
+      if (ValueTypeUtils.isFixedTypedVector(_valueType)) {
-    // needs to be checked before more generic isAVector
+        _length = ValueTypeUtils.fixedTypedVectorElementSize(_valueType);
-    if(ValueTypeUtils.isFixedTypedVector(_valueType)) {
+      } else if (_valueType == ValueType.Blob ||
-      _length = ValueTypeUtils.fixedTypedVectorElementSize(_valueType);
+          ValueTypeUtils.isAVector(_valueType) ||
-    } else if(_valueType == ValueType.Blob || ValueTypeUtils.isAVector(_valueType) || _valueType == ValueType.Map){
+          _valueType == ValueType.Map) {
-      _length = _readUInt(_indirect - _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
+        _length = _readUInt(
-    } else if (_valueType == ValueType.Null) {
+            _indirect - _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
-      _length = 0;
+      } else if (_valueType == ValueType.Null) {
-    } else if (_valueType == ValueType.String) {
+        _length = 0;
-      final indirect = _indirect;
+      } else if (_valueType == ValueType.String) {
-      var size_byte_width = _byteWidth;
+        final indirect = _indirect;
-      var size = _readUInt(indirect - size_byte_width, BitWidthUtil.fromByteWidth(size_byte_width));
+        var sizeByteWidth = _byteWidth;
-      while (_buffer.getInt8(indirect + size) != 0) {
+        var size = _readUInt(indirect - sizeByteWidth,
-        size_byte_width <<= 1;
+            BitWidthUtil.fromByteWidth(sizeByteWidth));
-        size = _readUInt(indirect - size_byte_width, BitWidthUtil.fromByteWidth(size_byte_width));
+        while (_buffer.getInt8(indirect + size) != 0) {
+          sizeByteWidth <<= 1;
+          size = _readUInt(indirect - sizeByteWidth,
+              BitWidthUtil.fromByteWidth(sizeByteWidth));
+        }
+        _length = size;
+      } else if (_valueType == ValueType.Key) {
+        final indirect = _indirect;
+        var size = 1;
+        while (_buffer.getInt8(indirect + size) != 0) {
+          size += 1;
+        }
+        _length = size;
+      } else {
+        _length = 1;
       }
-      _length = size;
-    } else if (_valueType == ValueType.Key) {
-      final indirect = _indirect;
-      var size = 1;
-      while (_buffer.getInt8(indirect + size) != 0) {
-        size += 1;
-      }
-      _length = size;
-    } else {
-      _length = 1;
     }
-    return _length;
+    return _length!;
   }
 
-
   /// Returns a minified JSON representation of the underlying FlexBuffer value.
   ///
   /// This method involves materializing the entire object tree, which may be
   /// expensive. It is more efficient to work with [Reference] and access only the needed data.
   /// Blob values are represented as base64 encoded string.
   String get json {
-    if(_valueType == ValueType.Bool) {
+    if (_valueType == ValueType.Bool) {
-      return boolValue ? 'true' : 'false';
+      return boolValue! ? 'true' : 'false';
     }
     if (_valueType == ValueType.Null) {
       return 'null';
     }
-    if(ValueTypeUtils.isNumber(_valueType)) {
+    if (ValueTypeUtils.isNumber(_valueType)) {
       return jsonEncode(numValue);
     }
     if (_valueType == ValueType.String) {
       return jsonEncode(stringValue);
     }
     if (_valueType == ValueType.Blob) {
-      return jsonEncode(base64Encode(blobValue));
+      return jsonEncode(base64Encode(blobValue!));
     }
     if (ValueTypeUtils.isAVector(_valueType)) {
       final result = StringBuffer();
@@ -261,7 +288,8 @@ class Reference {
       result.write('}');
       return result.toString();
     }
-    throw UnsupportedError('Type: $_valueType is not supported for JSON conversion');
+    throw UnsupportedError(
+        'Type: $_valueType is not supported for JSON conversion');
   }
 
   /// Computes the indirect offset of the value.
@@ -316,16 +344,20 @@ class Reference {
   }
 
   void _validateOffset(int offset, BitWidth width) {
-    if (_offset < 0 || _buffer.lengthInBytes <= offset + width.index || offset & (BitWidthUtil.toByteWidth(width) - 1) != 0) {
+    if (_offset < 0 ||
+        _buffer.lengthInBytes <= offset + width.index ||
+        offset & (BitWidthUtil.toByteWidth(width) - 1) != 0) {
       throw StateError('Bad offset: $offset, width: $width');
     }
   }
 
-  int _keyIndex(String key) {
+  int? _keyIndex(String key) {
     final input = utf8.encode(key);
     final keysVectorOffset = _indirect - _byteWidth * 3;
-    final indirectOffset = keysVectorOffset - _readUInt(keysVectorOffset, BitWidthUtil.fromByteWidth(_byteWidth));
+    final indirectOffset = keysVectorOffset -
-    final byteWidth = _readUInt(keysVectorOffset + _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
+        _readUInt(keysVectorOffset, BitWidthUtil.fromByteWidth(_byteWidth));
+    final byteWidth = _readUInt(
+        keysVectorOffset + _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
     var low = 0;
     var high = length - 1;
     while (low <= high) {
@@ -341,9 +373,10 @@ class Reference {
     return null;
   }
 
-  int _diffKeys(List<int> input, int index, int indirect_offset, int byteWidth) {
+  int _diffKeys(List<int> input, int index, int indirectOffset, int byteWidth) {
-    final keyOffset = indirect_offset + index * byteWidth;
+    final keyOffset = indirectOffset + index * byteWidth;
-    final keyIndirectOffset = keyOffset - _readUInt(keyOffset, BitWidthUtil.fromByteWidth(byteWidth));
+    final keyIndirectOffset =
+        keyOffset - _readUInt(keyOffset, BitWidthUtil.fromByteWidth(byteWidth));
     for (var i = 0; i < input.length; i++) {
       final dif = input[i] - _buffer.getUint8(keyIndirectOffset + i);
       if (dif != 0) {
@@ -357,38 +390,42 @@ class Reference {
     final indirect = _indirect;
     final elementOffset = indirect + index * _byteWidth;
     final packedType = _buffer.getUint8(indirect + length * _byteWidth + index);
-    return Reference._(_buffer, elementOffset, BitWidthUtil.fromByteWidth(_byteWidth), packedType, "$_path/$key");
+    return Reference._(_buffer, elementOffset,
+        BitWidthUtil.fromByteWidth(_byteWidth), packedType, "$_path/$key");
   }
 
   Reference _valueForIndex(int index) {
     final indirect = _indirect;
     final elementOffset = indirect + index * _byteWidth;
     final packedType = _buffer.getUint8(indirect + length * _byteWidth + index);
-    return Reference._(_buffer, elementOffset, BitWidthUtil.fromByteWidth(_byteWidth), packedType, "$_path/[$index]");
+    return Reference._(_buffer, elementOffset,
+        BitWidthUtil.fromByteWidth(_byteWidth), packedType, "$_path/[$index]");
   }
 
   String _keyForIndex(int index) {
     final keysVectorOffset = _indirect - _byteWidth * 3;
-    final indirectOffset = keysVectorOffset - _readUInt(keysVectorOffset, BitWidthUtil.fromByteWidth(_byteWidth));
+    final indirectOffset = keysVectorOffset -
-    final byteWidth = _readUInt(keysVectorOffset + _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
+        _readUInt(keysVectorOffset, BitWidthUtil.fromByteWidth(_byteWidth));
+    final byteWidth = _readUInt(
+        keysVectorOffset + _byteWidth, BitWidthUtil.fromByteWidth(_byteWidth));
     final keyOffset = indirectOffset + index * byteWidth;
-    final keyIndirectOffset = keyOffset - _readUInt(keyOffset, BitWidthUtil.fromByteWidth(byteWidth));
+    final keyIndirectOffset =
+        keyOffset - _readUInt(keyOffset, BitWidthUtil.fromByteWidth(byteWidth));
     var length = 0;
     while (_buffer.getUint8(keyIndirectOffset + length) != 0) {
       length += 1;
     }
     return utf8.decode(_buffer.buffer.asUint8List(keyIndirectOffset, length));
   }
-
 }
 
-class _VectorIterator with IterableMixin<Reference> implements Iterator<Reference> {
+class _VectorIterator
+    with IterableMixin<Reference>
+    implements Iterator<Reference> {
   final Reference _vector;
-  int index;
+  int index = -1;
 
-  _VectorIterator(this._vector) {
+  _VectorIterator(this._vector);
-    index = -1;
-  }
 
   @override
   Reference get current => _vector[index];
@@ -405,11 +442,9 @@ class _VectorIterator with IterableMixin<Reference> implements Iterator<Referenc
 
 class _MapKeyIterator with IterableMixin<String> implements Iterator<String> {
   final Reference _map;
-  int index;
+  int index = -1;
 
-  _MapKeyIterator(this._map) {
+  _MapKeyIterator(this._map);
-    index = -1;
-  }
 
   @override
   String get current => _map._keyForIndex(index);
@@ -424,13 +459,13 @@ class _MapKeyIterator with IterableMixin<String> implements Iterator<String> {
   Iterator<String> get iterator => this;
 }
 
-class _MapValueIterator with IterableMixin<Reference> implements Iterator<Reference> {
+class _MapValueIterator
+    with IterableMixin<Reference>
+    implements Iterator<Reference> {
   final Reference _map;
-  int index;
+  int index = -1;
 
-  _MapValueIterator(this._map) {
+  _MapValueIterator(this._map);
-    index = -1;
-  }
 
   @override
   Reference get current => _map._valueForIndex(index);

dart/lib/src/types.dart

@@ -1,17 +1,13 @@
 import 'dart:typed_data';
 
 /// Represents the number of bits a value occupies.
-enum BitWidth {
+enum BitWidth { width8, width16, width32, width64 }
-  width8,
-  width16,
-  width32,
-  width64
-}
 
 class BitWidthUtil {
   static int toByteWidth(BitWidth self) {
     return 1 << self.index;
   }
+
   static BitWidth width(num value) {
     if (value.toInt() == value) {
       var v = value.toInt().abs();
@@ -20,8 +16,11 @@ class BitWidthUtil {
       if (v >> 31 == 0) return BitWidth.width32;
       return BitWidth.width64;
     }
-    return value == _toF32(value) ? BitWidth.width32 : BitWidth.width64;
+    return value == _toF32(value as double)
+        ? BitWidth.width32
+        : BitWidth.width64;
   }
+
   static BitWidth uwidth(num value) {
     if (value.toInt() == value) {
       var v = value.toInt().abs();
@@ -30,8 +29,11 @@ class BitWidthUtil {
       if (v >> 32 == 0) return BitWidth.width32;
       return BitWidth.width64;
     }
-    return value == _toF32(value) ? BitWidth.width32 : BitWidth.width64;
+    return value == _toF32(value as double)
+        ? BitWidth.width32
+        : BitWidth.width64;
   }
+
   static BitWidth fromByteWidth(int value) {
     if (value == 1) {
       return BitWidth.width8;
@@ -45,11 +47,13 @@ class BitWidthUtil {
     if (value == 8) {
       return BitWidth.width64;
     }
-    throw Exception('Unexpected value ${value}');
+    throw Exception('Unexpected value $value');
   }
+
   static int paddingSize(int bufSize, int scalarSize) {
     return (~bufSize + 1) & (scalarSize - 1);
   }
+
   static double _toF32(double value) {
     var bdata = ByteData(4);
     bdata.setFloat32(0, value);
@@ -66,15 +70,36 @@ class BitWidthUtil {
 
 /// Represents all internal FlexBuffer types.
 enum ValueType {
-  Null, Int, UInt, Float,
+  Null,
-  Key, String, IndirectInt, IndirectUInt, IndirectFloat,
+  Int,
-  Map, Vector, VectorInt, VectorUInt, VectorFloat, VectorKey,
+  UInt,
-  @Deprecated('VectorString is deprecated due to a flaw in the binary format (https://github.com/google/flatbuffers/issues/5627)')
+  Float,
+  Key,
+  String,
+  IndirectInt,
+  IndirectUInt,
+  IndirectFloat,
+  Map,
+  Vector,
+  VectorInt,
+  VectorUInt,
+  VectorFloat,
+  VectorKey,
+  @Deprecated(
+      'VectorString is deprecated due to a flaw in the binary format (https://github.com/google/flatbuffers/issues/5627)')
   VectorString,
-  VectorInt2, VectorUInt2, VectorFloat2,
+  VectorInt2,
-  VectorInt3, VectorUInt3, VectorFloat3,
+  VectorUInt2,
-  VectorInt4, VectorUInt4, VectorFloat4,
+  VectorFloat2,
-  Blob, Bool, VectorBool
+  VectorInt3,
+  VectorUInt3,
+  VectorFloat3,
+  VectorInt4,
+  VectorUInt4,
+  VectorFloat4,
+  Blob,
+  Bool,
+  VectorBool
 }
 
 class ValueTypeUtils {
@@ -89,71 +114,70 @@ class ValueTypeUtils {
   }
 
   static bool isInline(ValueType self) {
-    return self == ValueType.Bool
+    return self == ValueType.Bool || toInt(self) <= toInt(ValueType.Float);
-        || toInt(self) <= toInt(ValueType.Float);
   }
 
   static bool isNumber(ValueType self) {
-    return toInt(self) >= toInt(ValueType.Int)
+    return toInt(self) >= toInt(ValueType.Int) &&
-        && toInt(self) <= toInt(ValueType.Float);
+        toInt(self) <= toInt(ValueType.Float);
   }
 
   static bool isIndirectNumber(ValueType self) {
-    return toInt(self) >= toInt(ValueType.IndirectInt)
+    return toInt(self) >= toInt(ValueType.IndirectInt) &&
-        && toInt(self) <= toInt(ValueType.IndirectFloat);
+        toInt(self) <= toInt(ValueType.IndirectFloat);
   }
 
   static bool isTypedVectorElement(ValueType self) {
     return self == ValueType.Bool ||
-        (
+        (toInt(self) >= toInt(ValueType.Int) &&
-            toInt(self) >= toInt(ValueType.Int)
+            toInt(self) <= toInt(ValueType.String));
-            && toInt(self) <= toInt(ValueType.String)
-        );
   }
 
   static bool isTypedVector(ValueType self) {
     return self == ValueType.VectorBool ||
-        (
+        (toInt(self) >= toInt(ValueType.VectorInt) &&
-          toInt(self) >= toInt(ValueType.VectorInt)
+            toInt(self) <= toInt(ValueType.VectorString));
-              && toInt(self) <= toInt(ValueType.VectorString)
-        );
   }
 
   static bool isFixedTypedVector(ValueType self) {
-    return (
+    return (toInt(self) >= toInt(ValueType.VectorInt2) &&
-            toInt(self) >= toInt(ValueType.VectorInt2)
+        toInt(self) <= toInt(ValueType.VectorFloat4));
-                && toInt(self) <= toInt(ValueType.VectorFloat4)
-        );
   }
 
   static bool isAVector(ValueType self) {
-    return (
+    return (isTypedVector(self) ||
-        isTypedVector(self) || isFixedTypedVector(self) || self == ValueType.Vector
+        isFixedTypedVector(self) ||
-    );
+        self == ValueType.Vector);
   }
 
   static ValueType toTypedVector(ValueType self, int length) {
     if (length == 0) {
-      return ValueTypeUtils.fromInt(toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt));
+      return ValueTypeUtils.fromInt(
+          toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt));
     }
     if (length == 2) {
-      return ValueTypeUtils.fromInt(toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt2));
+      return ValueTypeUtils.fromInt(
+          toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt2));
     }
     if (length == 3) {
-      return ValueTypeUtils.fromInt(toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt3));
+      return ValueTypeUtils.fromInt(
+          toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt3));
     }
     if (length == 4) {
-      return ValueTypeUtils.fromInt(toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt4));
+      return ValueTypeUtils.fromInt(
+          toInt(self) - toInt(ValueType.Int) + toInt(ValueType.VectorInt4));
     }
     throw Exception('unexpected length ' + length.toString());
   }
 
   static ValueType typedVectorElementType(ValueType self) {
-    return ValueTypeUtils.fromInt(toInt(self) - toInt(ValueType.VectorInt) + toInt(ValueType.Int));
+    return ValueTypeUtils.fromInt(
+        toInt(self) - toInt(ValueType.VectorInt) + toInt(ValueType.Int));
   }
 
   static ValueType fixedTypedVectorElementType(ValueType self) {
-    return ValueTypeUtils.fromInt((toInt(self) - toInt(ValueType.VectorInt2)) % 3 + toInt(ValueType.Int));
+    return ValueTypeUtils.fromInt(
+        (toInt(self) - toInt(ValueType.VectorInt2)) % 3 + toInt(ValueType.Int));
   }
 
   static int fixedTypedVectorElementSize(ValueType self) {

dart/publish.sh

@@ -21,17 +21,12 @@ set -e
 
 command -v dart >/dev/null 2>&1 || { echo >&2 "Require `dart` but it's not installed.  Aborting."; exit 1; }
 
-cp ../samples/monster.fbs example/
+pushd ../tests
-cp ../tests/monster_test.fbs test/
+./DartTest.sh
-cp -r ../tests/include_test/*.fbs test/
-cp -r ../tests/include_test/sub test/
-
-pushd example
-../../flatc --dart ./monster.fbs
 popd
 
-pushd test
+pushd ../samples
-../../flatc --dart ./monster_test.fbs
+./dart_sample.sh
 popd
 
 dart pub publish

dart/pubspec.yaml

@@ -1,20 +1,15 @@
 name: flat_buffers
-version: 2.0.0
+version: 2.0.5
-description: >
+description: FlatBuffers reading and writing library for Dart. Based on original work by Konstantin Scheglov and Paul Berry of the Dart SDK team.
-  FlatBuffers reading and writing library for Dart.  Use the flatc compiler to
-  generate Dart classes for a FlatBuffers schema, and this library to assist with
-  reading and writing the binary format.
-
-  Based on original work by Konstantin Scheglov and Paul Berry of the Dart SDK team.
-authors:
-- Dan Field <dfield@gmail.com>
-- Konstantin Scheglov
-- Paul Berry
 homepage: https://github.com/google/flatbuffers
 documentation: https://google.github.io/flatbuffers/index.html
-dev_dependencies:
+
-  test: ^1.3.0
-  test_reflective_loader: ^0.1.4
-  path: ^1.5.1
 environment:
-  sdk: '>=2.0.0-dev.28.0 <3.0.0'
+  sdk: '>=2.12.0 <3.0.0'
+
+dev_dependencies:
+  test: ^1.17.7
+  test_reflective_loader: ^0.2.0
+  path: ^1.8.0
+  lints: ^1.0.1
+

dart/test/bool_structs.fbs

@@ -0,0 +1,10 @@
+// Test for #7355
+table Foo {
+  my_foo : foo_properties;
+}
+
+struct foo_properties
+{
+    a : bool;
+    b : bool;
+}

dart/test/flat_buffers_test.dart

@@ -1,7 +1,3 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
 import 'dart:typed_data';
 import 'dart:io' as io;
 
@@ -12,12 +8,18 @@ import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import './monster_test_my_game.example_generated.dart' as example;
+import './monster_test_my_game.example2_generated.dart' as example2;
+import './list_of_enums_generated.dart' as example3;
+import './bool_structs_generated.dart' as example4;
+import './keyword_test_keyword_test_generated.dart' as keyword_test;
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(BuilderTest);
+    defineReflectiveTests(ObjectAPITest);
     defineReflectiveTests(CheckOtherLangaugesData);
     defineReflectiveTests(GeneratorTest);
+    defineReflectiveTests(ListOfEnumsTest);
   });
 }
 
@@ -28,34 +30,35 @@ int indexToField(int index) {
 @reflectiveTest
 class CheckOtherLangaugesData {
   test_cppData() async {
-    List<int> data = await new io.File(path.join(
+    List<int> data = await io.File(path.join(
-      path.dirname(io.Platform.script.path),
+      path.context.current,
+      'test',
       'monsterdata_test.mon',
     )).readAsBytes();
-    example.Monster mon = new example.Monster(data);
+    example.Monster mon = example.Monster(data);
     expect(mon.hp, 80);
     expect(mon.mana, 150);
     expect(mon.name, 'MyMonster');
-    expect(mon.pos.x, 1.0);
+    expect(mon.pos!.x, 1.0);
-    expect(mon.pos.y, 2.0);
+    expect(mon.pos!.y, 2.0);
-    expect(mon.pos.z, 3.0);
+    expect(mon.pos!.z, 3.0);
-    expect(mon.pos.test1, 3.0);
+    expect(mon.pos!.test1, 3.0);
-    expect(mon.pos.test2.value, 2.0);
+    expect(mon.pos!.test2.value, 2.0);
-    expect(mon.pos.test3.a, 5);
+    expect(mon.pos!.test3.a, 5);
-    expect(mon.pos.test3.b, 6);
+    expect(mon.pos!.test3.b, 6);
-    expect(mon.testType.value, example.AnyTypeId.Monster.value);
+    expect(mon.testType!.value, example.AnyTypeId.Monster.value);
     expect(mon.test is example.Monster, true);
     final monster2 = mon.test as example.Monster;
     expect(monster2.name, "Fred");
 
-    expect(mon.inventory.length, 5);
+    expect(mon.inventory!.length, 5);
-    expect(mon.inventory.reduce((cur, next) => cur + next), 10);
+    expect(mon.inventory!.reduce((cur, next) => cur + next), 10);
-    expect(mon.test4.length, 2);
+    final test4 = mon.test4!;
-    expect(
+    expect(test4.length, 2);
-        mon.test4[0].a + mon.test4[0].b + mon.test4[1].a + mon.test4[1].b, 100);
+    expect(test4[0].a + test4[0].b + test4[1].a + test4[1].b, 100);
-    expect(mon.testarrayofstring.length, 2);
+    expect(mon.testarrayofstring!.length, 2);
-    expect(mon.testarrayofstring[0], "test1");
+    expect(mon.testarrayofstring![0], "test1");
-    expect(mon.testarrayofstring[1], "test2");
+    expect(mon.testarrayofstring![1], "test2");
 
     // this will fail if accessing any field fails.
     expect(
@@ -65,7 +68,7 @@ class CheckOtherLangaugesData {
       'mana: 150, hp: 80, name: MyMonster, inventory: [0, 1, 2, 3, 4], '
       'color: Color{value: 8}, testType: AnyTypeId{value: 1}, '
       'test: Monster{pos: null, mana: 150, hp: 100, name: Fred, '
-      'inventory: null, color: Color{value: 8}, testType: AnyTypeId{value: 0}, '
+      'inventory: null, color: Color{value: 8}, testType: null, '
       'test: null, test4: null, testarrayofstring: null, '
       'testarrayoftables: null, enemy: null, testnestedflatbuffer: null, '
       'testempty: null, testbool: false, testhashs32Fnv1: 0, '
@@ -79,14 +82,16 @@ class CheckOtherLangaugesData {
       'vectorOfWeakReferences: null, vectorOfStrongReferrables: null, '
       'coOwningReference: 0, vectorOfCoOwningReferences: null, '
       'nonOwningReference: 0, vectorOfNonOwningReferences: null, '
-      'anyUniqueType: AnyUniqueAliasesTypeId{value: 0}, anyUnique: null, '
+      'anyUniqueType: null, anyUnique: null, anyAmbiguousType: null, '
-      'anyAmbiguousType: AnyAmbiguousAliasesTypeId{value: 0}, '
       'anyAmbiguous: null, vectorOfEnums: null, signedEnum: Race{value: -1}, '
-      'testrequirednestedflatbuffer: null}, '
+      'testrequirednestedflatbuffer: null, scalarKeySortedTables: null, '
+      'nativeInline: null, '
+      'longEnumNonEnumDefault: LongEnum{value: 0}, '
+      'longEnumNormalDefault: LongEnum{value: 2}}, '
       'test4: [Test{a: 10, b: 20}, Test{a: 30, b: 40}], '
       'testarrayofstring: [test1, test2], testarrayoftables: null, '
       'enemy: Monster{pos: null, mana: 150, hp: 100, name: Fred, '
-      'inventory: null, color: Color{value: 8}, testType: AnyTypeId{value: 0}, '
+      'inventory: null, color: Color{value: 8}, testType: null, '
       'test: null, test4: null, testarrayofstring: null, '
       'testarrayoftables: null, enemy: null, testnestedflatbuffer: null, '
       'testempty: null, testbool: false, testhashs32Fnv1: 0, '
@@ -100,10 +105,12 @@ class CheckOtherLangaugesData {
       'vectorOfWeakReferences: null, vectorOfStrongReferrables: null, '
       'coOwningReference: 0, vectorOfCoOwningReferences: null, '
       'nonOwningReference: 0, vectorOfNonOwningReferences: null, '
-      'anyUniqueType: AnyUniqueAliasesTypeId{value: 0}, anyUnique: null, '
+      'anyUniqueType: null, anyUnique: null, anyAmbiguousType: null, '
-      'anyAmbiguousType: AnyAmbiguousAliasesTypeId{value: 0}, '
       'anyAmbiguous: null, vectorOfEnums: null, signedEnum: Race{value: -1}, '
-      'testrequirednestedflatbuffer: null}, '
+      'testrequirednestedflatbuffer: null, scalarKeySortedTables: null, '
+      'nativeInline: null, '
+      'longEnumNonEnumDefault: LongEnum{value: 0}, '
+      'longEnumNormalDefault: LongEnum{value: 2}}, '
       'testnestedflatbuffer: null, testempty: null, testbool: true, '
       'testhashs32Fnv1: -579221183, testhashu32Fnv1: 3715746113, '
       'testhashs64Fnv1: 7930699090847568257, '
@@ -112,7 +119,9 @@ class CheckOtherLangaugesData {
       'testhashs64Fnv1a: 4898026182817603057, '
       'testhashu64Fnv1a: 4898026182817603057, '
       'testarrayofbools: [true, false, true], testf: 3.14159, testf2: 3.0, '
-      'testf3: 0.0, testarrayofstring2: null, testarrayofsortedstruct: null, '
+      'testf3: 0.0, testarrayofstring2: null, testarrayofsortedstruct: ['
+      'Ability{id: 0, distance: 45}, Ability{id: 1, distance: 21}, '
+      'Ability{id: 5, distance: 12}], '
       'flex: null, test5: [Test{a: 10, b: 20}, Test{a: 30, b: 40}], '
       'vectorOfLongs: [1, 100, 10000, 1000000, 100000000], '
       'vectorOfDoubles: [-1.7976931348623157e+308, 0.0, 1.7976931348623157e+308], '
@@ -121,22 +130,46 @@ class CheckOtherLangaugesData {
       'vectorOfStrongReferrables: null, coOwningReference: 0, '
       'vectorOfCoOwningReferences: null, nonOwningReference: 0, '
       'vectorOfNonOwningReferences: null, '
-      'anyUniqueType: AnyUniqueAliasesTypeId{value: 0}, anyUnique: null, '
+      'anyUniqueType: null, anyUnique: null, '
-      'anyAmbiguousType: AnyAmbiguousAliasesTypeId{value: 0}, '
+      'anyAmbiguousType: null, '
       'anyAmbiguous: null, vectorOfEnums: null, signedEnum: Race{value: -1}, '
-      'testrequirednestedflatbuffer: null}',
+      'testrequirednestedflatbuffer: null, scalarKeySortedTables: [Stat{id: '
+      'miss, val: 0, count: 0}, Stat{id: hit, val: 10, count: 1}], '
+      'nativeInline: Test{a: 1, b: 2}, '
+      'longEnumNonEnumDefault: LongEnum{value: 0}, '
+      'longEnumNormalDefault: LongEnum{value: 2}}',
     );
   }
 }
 
+/// Test a custom, fixed-memory allocator (no actual allocations performed)
+class CustomAllocator extends Allocator {
+  final _memory = ByteData(10 * 1024);
+  int _used = 0;
+
+  Uint8List buffer(int size) => _memory.buffer.asUint8List(_used - size, size);
+
+  @override
+  ByteData allocate(int size) {
+    if (size > _memory.lengthInBytes) {
+      throw UnsupportedError('Trying to allocate too much');
+    }
+    _used = size;
+    return ByteData.sublistView(_memory, 0, size);
+  }
+
+  @override
+  void deallocate(ByteData _) {}
+}
+
 @reflectiveTest
 class BuilderTest {
-  void test_monsterBuilder() {
+  void test_monsterBuilder([Builder? builder]) {
-    final fbBuilder = new Builder();
+    final fbBuilder = builder ?? Builder();
     final str = fbBuilder.writeString('MyMonster');
 
     fbBuilder.writeString('test1');
-    fbBuilder.writeString('test2');
+    fbBuilder.writeString('test2', asciiOptimization: true);
     final testArrayOfString = fbBuilder.endStructVector(2);
 
     final fred = fbBuilder.writeString('Fred');
@@ -144,12 +177,12 @@ class BuilderTest {
     final List<int> treasure = [0, 1, 2, 3, 4];
     final inventory = fbBuilder.writeListUint8(treasure);
 
-    final monBuilder = new example.MonsterBuilder(fbBuilder)
+    final monBuilder = example.MonsterBuilder(fbBuilder)
       ..begin()
       ..addNameOffset(fred);
     final mon2 = monBuilder.finish();
 
-    final testBuilder = new example.TestBuilder(fbBuilder);
+    final testBuilder = example.TestBuilder(fbBuilder);
     testBuilder.finish(10, 20);
     testBuilder.finish(30, 40);
     final test4 = fbBuilder.endStructVector(2);
@@ -157,7 +190,7 @@ class BuilderTest {
     monBuilder
       ..begin()
       ..addPos(
-        new example.Vec3Builder(fbBuilder).finish(
+        example.Vec3Builder(fbBuilder).finish(
           1.0,
           2.0,
           3.0,
@@ -177,50 +210,51 @@ class BuilderTest {
     fbBuilder.finish(mon);
   }
 
-  void test_error_addInt32_withoutStartTable() {
+  void test_error_addInt32_withoutStartTable([Builder? builder]) {
-    Builder builder = new Builder();
+    builder ??= Builder();
     expect(() {
-      builder.addInt32(0, 0);
+      builder!.addInt32(0, 0);
-    }, throwsStateError);
+    }, throwsA(isA<AssertionError>()));
   }
 
   void test_error_addOffset_withoutStartTable() {
-    Builder builder = new Builder();
+    Builder builder = Builder();
     expect(() {
       builder.addOffset(0, 0);
-    }, throwsStateError);
+    }, throwsA(isA<AssertionError>()));
   }
 
   void test_error_endTable_withoutStartTable() {
-    Builder builder = new Builder();
+    Builder builder = Builder();
     expect(() {
       builder.endTable();
-    }, throwsStateError);
+    }, throwsA(isA<AssertionError>()));
   }
 
   void test_error_startTable_duringTable() {
-    Builder builder = new Builder();
+    Builder builder = Builder();
-    builder.startTable();
+    builder.startTable(0);
     expect(() {
-      builder.startTable();
+      builder.startTable(0);
-    }, throwsStateError);
+    }, throwsA(isA<AssertionError>()));
   }
 
   void test_error_writeString_duringTable() {
-    Builder builder = new Builder();
+    Builder builder = Builder();
-    builder.startTable();
+    builder.startTable(1);
     expect(() {
       builder.writeString('12345');
-    }, throwsStateError);
+    }, throwsA(isA<AssertionError>()));
   }
 
   void test_file_identifier() {
     Uint8List byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
-      builder.startTable();
+      builder.startTable(0);
       int offset = builder.endTable();
-      byteList = builder.finish(offset, 'Az~ÿ');
+      builder.finish(offset, 'Az~ÿ');
+      byteList = builder.buffer;
     }
     // Convert byteList to a ByteData so that we can read data from it.
     ByteData byteData = byteList.buffer.asByteData(byteList.offsetInBytes);
@@ -243,32 +277,46 @@ class BuilderTest {
   }
 
   void test_low() {
-    Builder builder = new Builder(initialSize: 0);
+    final allocator = CustomAllocator();
-    expect((builder..putUint8(1)).lowFinish(), [1]);
+    final builder = Builder(initialSize: 0, allocator: allocator);
-    expect((builder..putUint32(2)).lowFinish(), [2, 0, 0, 0, 0, 0, 0, 1]);
+
-    expect((builder..putUint8(3)).lowFinish(),
+    builder.putUint8(1);
-        [0, 0, 0, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+    expect(allocator.buffer(builder.size()), [1]);
-    expect((builder..putUint8(4)).lowFinish(),
+
-        [0, 0, 4, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+    builder.putUint32(2);
-    expect((builder..putUint8(5)).lowFinish(),
+    expect(allocator.buffer(builder.size()), [2, 0, 0, 0, 0, 0, 0, 1]);
-        [0, 5, 4, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+
-    expect((builder..putUint32(6)).lowFinish(),
+    builder.putUint8(3);
+    expect(
+        allocator.buffer(builder.size()), [0, 0, 0, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+
+    builder.putUint8(4);
+    expect(
+        allocator.buffer(builder.size()), [0, 0, 4, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+
+    builder.putUint8(5);
+    expect(
+        allocator.buffer(builder.size()), [0, 5, 4, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
+
+    builder.putUint32(6);
+    expect(allocator.buffer(builder.size()),
         [6, 0, 0, 0, 0, 5, 4, 3, 2, 0, 0, 0, 0, 0, 0, 1]);
   }
 
   void test_table_default() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      final builder = Builder(initialSize: 0, allocator: CustomAllocator());
-      builder.startTable();
+      builder.startTable(2);
       builder.addInt32(0, 10, 10);
       builder.addInt32(1, 20, 10);
       int offset = builder.endTable();
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
       expect(builder.size(), byteList.length);
     }
     // read and verify
-    BufferContext buffer = new BufferContext.fromBytes(byteList);
+    BufferContext buffer = BufferContext.fromBytes(byteList);
     int objectOffset = buffer.derefObject(0);
     // was not written, so uses the new default value
     expect(
@@ -282,15 +330,16 @@ class BuilderTest {
         20);
   }
 
-  void test_table_format() {
+  void test_table_format([Builder? builder]) {
     Uint8List byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      builder ??= Builder(initialSize: 0);
-      builder.startTable();
+      builder.startTable(3);
       builder.addInt32(0, 10);
       builder.addInt32(1, 20);
       builder.addInt32(2, 30);
-      byteList = builder.finish(builder.endTable());
+      builder.finish(builder.endTable());
+      byteList = builder.buffer;
     }
     // Convert byteList to a ByteData so that we can read data from it.
     ByteData byteData = byteList.buffer.asByteData(byteList.offsetInBytes);
@@ -319,30 +368,37 @@ class BuilderTest {
     String unicodeString = 'Проба пера';
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
-      int latinStringOffset = builder.writeString(latinString);
+      int? latinStringOffset =
-      int unicodeStringOffset = builder.writeString(unicodeString);
+          builder.writeString(latinString, asciiOptimization: true);
-      builder.startTable();
+      int? unicodeStringOffset =
+          builder.writeString(unicodeString, asciiOptimization: true);
+      builder.startTable(2);
       builder.addOffset(0, latinStringOffset);
       builder.addOffset(1, unicodeStringOffset);
       int offset = builder.endTable();
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     int objectOffset = buf.derefObject(0);
-    expect(const StringReader().vTableGet(buf, objectOffset, indexToField(0)),
+    expect(
+        const StringReader()
+            .vTableGetNullable(buf, objectOffset, indexToField(0)),
         latinString);
-    expect(const StringReader().vTableGet(buf, objectOffset, indexToField(1)),
+    expect(
+        const StringReader(asciiOptimization: true)
+            .vTableGetNullable(buf, objectOffset, indexToField(1)),
         unicodeString);
   }
 
-  void test_table_types() {
+  void test_table_types([Builder? builder]) {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      builder ??= Builder(initialSize: 0);
-      int stringOffset = builder.writeString('12345');
+      int? stringOffset = builder.writeString('12345');
-      builder.startTable();
+      builder.startTable(7);
       builder.addBool(0, true);
       builder.addInt8(1, 10);
       builder.addInt32(2, 20);
@@ -351,24 +407,39 @@ class BuilderTest {
       builder.addUint32(5, 0x9ABCDEF0);
       builder.addUint8(6, 0x9A);
       int offset = builder.endTable();
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     int objectOffset = buf.derefObject(0);
     expect(
-        const BoolReader().vTableGet(buf, objectOffset, indexToField(0)), true);
+        const BoolReader()
+            .vTableGetNullable(buf, objectOffset, indexToField(0)),
+        true);
     expect(
-        const Int8Reader().vTableGet(buf, objectOffset, indexToField(1)), 10);
+        const Int8Reader()
+            .vTableGetNullable(buf, objectOffset, indexToField(1)),
+        10);
     expect(
-        const Int32Reader().vTableGet(buf, objectOffset, indexToField(2)), 20);
+        const Int32Reader()
-    expect(const StringReader().vTableGet(buf, objectOffset, indexToField(3)),
+            .vTableGetNullable(buf, objectOffset, indexToField(2)),
+        20);
+    expect(
+        const StringReader()
+            .vTableGetNullable(buf, objectOffset, indexToField(3)),
         '12345');
     expect(
-        const Int32Reader().vTableGet(buf, objectOffset, indexToField(4)), 40);
+        const Int32Reader()
-    expect(const Uint32Reader().vTableGet(buf, objectOffset, indexToField(5)),
+            .vTableGetNullable(buf, objectOffset, indexToField(4)),
+        40);
+    expect(
+        const Uint32Reader()
+            .vTableGetNullable(buf, objectOffset, indexToField(5)),
         0x9ABCDEF0);
-    expect(const Uint8Reader().vTableGet(buf, objectOffset, indexToField(6)),
+    expect(
+        const Uint8Reader()
+            .vTableGetNullable(buf, objectOffset, indexToField(6)),
         0x9A);
   }
 
@@ -377,12 +448,13 @@ class BuilderTest {
     // write
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListUint32(values);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<int> items = const Uint32ListReader().read(buf, 0);
     expect(items, hasLength(4));
     expect(items, orderedEquals(values));
@@ -393,16 +465,17 @@ class BuilderTest {
       // write
       List<int> byteList;
       {
-        Builder builder = new Builder(initialSize: 0);
+        Builder builder = Builder(initialSize: 0);
-        List<bool> values = new List<bool>.filled(len, false);
+        List<bool> values = List<bool>.filled(len, false);
         for (int bit in trueBits) {
           values[bit] = true;
         }
         int offset = builder.writeListBool(values);
-        byteList = builder.finish(offset);
+        builder.finish(offset);
+        byteList = builder.buffer;
       }
       // read and verify
-      BufferContext buf = new BufferContext.fromBytes(byteList);
+      BufferContext buf = BufferContext.fromBytes(byteList);
       List<bool> items = const BoolListReader().read(buf, 0);
       expect(items, hasLength(len));
       for (int i = 0; i < items.length; i++) {
@@ -421,25 +494,26 @@ class BuilderTest {
     verifyListBooleans(33, <int>[1, 2, 24, 25, 31, 32]);
     verifyListBooleans(63, <int>[]);
     verifyListBooleans(63, <int>[0, 1, 2, 61, 62]);
-    verifyListBooleans(63, new List<int>.generate(63, (i) => i));
+    verifyListBooleans(63, List<int>.generate(63, (i) => i));
     verifyListBooleans(64, <int>[]);
     verifyListBooleans(64, <int>[0, 1, 2, 61, 62, 63]);
     verifyListBooleans(64, <int>[1, 2, 62]);
     verifyListBooleans(64, <int>[0, 1, 2, 63]);
-    verifyListBooleans(64, new List<int>.generate(64, (i) => i));
+    verifyListBooleans(64, List<int>.generate(64, (i) => i));
     verifyListBooleans(100, <int>[0, 3, 30, 60, 90, 99]);
   }
 
   void test_writeList_ofInt32() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListInt32(<int>[1, 2, 3, 4, 5]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
-    List<int> items = const ListReader<int>(const Int32Reader()).read(buf, 0);
+    List<int> items = const ListReader<int>(Int32Reader()).read(buf, 0);
     expect(items, hasLength(5));
     expect(items, orderedEquals(<int>[1, 2, 3, 4, 5]));
   }
@@ -449,13 +523,14 @@ class BuilderTest {
     // write
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListFloat64(values);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
 
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<double> items = const Float64ListReader().read(buf, 0);
 
     expect(items, hasLength(values.length));
@@ -469,12 +544,13 @@ class BuilderTest {
     // write
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListFloat32(values);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<double> items = const Float32ListReader().read(buf, 0);
     expect(items, hasLength(5));
     for (int i = 0; i < values.length; i++) {
@@ -482,14 +558,14 @@ class BuilderTest {
     }
   }
 
-  void test_writeList_ofObjects() {
+  void test_writeList_ofObjects([Builder? builder]) {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      builder ??= Builder(initialSize: 0);
       // write the object #1
       int object1;
       {
-        builder.startTable();
+        builder.startTable(2);
         builder.addInt32(0, 10);
         builder.addInt32(1, 20);
         object1 = builder.endTable();
@@ -497,19 +573,20 @@ class BuilderTest {
       // write the object #1
       int object2;
       {
-        builder.startTable();
+        builder.startTable(2);
         builder.addInt32(0, 100);
         builder.addInt32(1, 200);
         object2 = builder.endTable();
       }
       // write the list
       int offset = builder.writeList([object1, object2]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<TestPointImpl> items =
-        const ListReader<TestPointImpl>(const TestPointReader()).read(buf, 0);
+        const ListReader<TestPointImpl>(TestPointReader()).read(buf, 0);
     expect(items, hasLength(2));
     expect(items[0].x, 10);
     expect(items[0].y, 20);
@@ -520,36 +597,37 @@ class BuilderTest {
   void test_writeList_ofStrings_asRoot() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
-      int str1 = builder.writeString('12345');
+      int? str1 = builder.writeString('12345');
-      int str2 = builder.writeString('ABC');
+      int? str2 = builder.writeString('ABC');
       int offset = builder.writeList([str1, str2]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
-    List<String> items =
+    List<String> items = const ListReader<String>(StringReader()).read(buf, 0);
-        const ListReader<String>(const StringReader()).read(buf, 0);
     expect(items, hasLength(2));
     expect(items, contains('12345'));
     expect(items, contains('ABC'));
   }
 
-  void test_writeList_ofStrings_inObject() {
+  void test_writeList_ofStrings_inObject([Builder? builder]) {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      builder ??= Builder(initialSize: 0);
       int listOffset = builder.writeList(
           [builder.writeString('12345'), builder.writeString('ABC')]);
-      builder.startTable();
+      builder.startTable(1);
       builder.addOffset(0, listOffset);
       int offset = builder.endTable();
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
-    StringListWrapperImpl reader = new StringListWrapperReader().read(buf, 0);
+    StringListWrapperImpl reader = StringListWrapperReader().read(buf, 0);
-    List<String> items = reader.items;
+    List<String>? items = reader.items;
     expect(items, hasLength(2));
     expect(items, contains('12345'));
     expect(items, contains('ABC'));
@@ -558,12 +636,13 @@ class BuilderTest {
   void test_writeList_ofUint32() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListUint32(<int>[1, 2, 0x9ABCDEF0]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<int> items = const Uint32ListReader().read(buf, 0);
     expect(items, hasLength(3));
     expect(items, orderedEquals(<int>[1, 2, 0x9ABCDEF0]));
@@ -572,12 +651,13 @@ class BuilderTest {
   void test_writeList_ofUint16() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
       int offset = builder.writeListUint16(<int>[1, 2, 60000]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
     List<int> items = const Uint16ListReader().read(buf, 0);
     expect(items, hasLength(3));
     expect(items, orderedEquals(<int>[1, 2, 60000]));
@@ -586,15 +666,188 @@ class BuilderTest {
   void test_writeList_ofUint8() {
     List<int> byteList;
     {
-      Builder builder = new Builder(initialSize: 0);
+      Builder builder = Builder(initialSize: 0);
-      int offset = builder.writeListUint8(<int>[1, 2, 3, 4, 0x9A]);
+      int offset = builder.writeListUint8(<int>[1, 2, 3, 4, 0x9A, 0xFA]);
-      byteList = builder.finish(offset);
+      builder.finish(offset);
+      byteList = builder.buffer;
     }
     // read and verify
-    BufferContext buf = new BufferContext.fromBytes(byteList);
+    BufferContext buf = BufferContext.fromBytes(byteList);
-    List<int> items = const Uint8ListReader().read(buf, 0);
+    const buffOffset = 8; // 32-bit offset to the list, + 32-bit length
-    expect(items, hasLength(5));
+    for (final lazy in [true, false]) {
-    expect(items, orderedEquals(<int>[1, 2, 3, 4, 0x9A]));
+      List<int> items = Uint8ListReader(lazy: lazy).read(buf, 0);
+      expect(items, hasLength(6));
+      expect(items, orderedEquals(<int>[1, 2, 3, 4, 0x9A, 0xFA]));
+
+      // overwrite the buffer to verify the laziness
+      buf.buffer.setUint8(buffOffset + 1, 99);
+      expect(items, orderedEquals(<int>[1, lazy ? 99 : 2, 3, 4, 0x9A, 0xFA]));
+
+      // restore the previous value for the next loop
+      buf.buffer.setUint8(buffOffset + 1, 2);
+    }
+  }
+
+  void test_reset() {
+    // We'll run a selection of tests , reusing the builder between them.
+    final testCases = <void Function(Builder?)>[
+      test_monsterBuilder,
+      test_error_addInt32_withoutStartTable,
+      test_table_format,
+      test_table_types,
+      test_writeList_ofObjects,
+      test_writeList_ofStrings_inObject
+    ];
+
+    // Execute all test cases in all permutations of their order.
+    // To do that, we generate permutations of test case indexes.
+    final testCasesPermutations =
+        _permutationsOf(List.generate(testCases.length, (index) => index));
+    expect(testCasesPermutations.length, _factorial(testCases.length));
+
+    for (var indexes in testCasesPermutations) {
+      // print the order so failures are reproducible
+      printOnFailure('Running reset() test cases in order: $indexes');
+
+      Builder? builder;
+      for (var index in indexes) {
+        if (builder == null) {
+          // Initial size small enough so at least one test case increases it.
+          // On the other hand, it's large enough so that some test cases don't.
+          builder = Builder(initialSize: 32);
+        } else {
+          builder.reset();
+        }
+        testCases[index](builder);
+      }
+    }
+  }
+
+  // Generate permutations of the given list
+  List<List<T>> _permutationsOf<T>(List<T> source) {
+    final result = <List<T>>[];
+
+    void permutate(List<T> items, int startAt) {
+      for (var i = startAt; i < items.length; i++) {
+        List<T> permutation = items.toList(growable: false);
+        permutation[i] = items[startAt];
+        permutation[startAt] = items[i];
+
+        // add the current list upon reaching the end
+        if (startAt == items.length - 1) {
+          result.add(items);
+        } else {
+          permutate(permutation, startAt + 1);
+        }
+      }
+    }
+
+    permutate(source, 0);
+    return result;
+  }
+
+  // a very simple implementation of n!
+  int _factorial(int n) {
+    var result = 1;
+    for (var i = 2; i <= n; i++) {
+      result *= i;
+    }
+    return result;
+  }
+}
+
+@reflectiveTest
+class ObjectAPITest {
+  void test_tableStat() {
+    final object1 = example.StatT(count: 3, id: "foo", val: 4);
+    expect(object1 is Packable, isTrue);
+    final fbb = Builder();
+    fbb.finish(object1.pack(fbb));
+    final object2 = example.Stat(fbb.buffer).unpack();
+    expect(object2.count, object1.count);
+    expect(object2.id, object1.id);
+    expect(object2.val, object1.val);
+    expect(object2.toString(), object1.toString());
+  }
+
+  void test_tableMonster() {
+    final monster = example.MonsterT()
+      ..pos = example.Vec3T(
+          x: 1,
+          y: 2,
+          z: 3,
+          test1: 4.0,
+          test2: example.Color.Red,
+          test3: example.TestT(a: 1, b: 2))
+      ..mana = 2
+      ..name = 'Monstrous'
+      ..inventory = [24, 42]
+      ..color = example.Color.Green
+      // TODO be smarter for unions and automatically set the `type` field?
+      ..testType = example.AnyTypeId.MyGame_Example2_Monster
+      ..test = example2.MonsterT()
+      ..test4 = [example.TestT(a: 3, b: 4), example.TestT(a: 5, b: 6)]
+      ..testarrayofstring = ["foo", "bar"]
+      ..testarrayoftables = [example.MonsterT(name: 'Oof')]
+      ..enemy = example.MonsterT(name: 'Enemy')
+      ..testarrayofbools = [false, true, false]
+      ..testf = 42.24
+      ..testarrayofsortedstruct = [
+        example.AbilityT(id: 1, distance: 5),
+        example.AbilityT(id: 3, distance: 7)
+      ]
+      ..vectorOfLongs = [5, 6, 7]
+      ..vectorOfDoubles = [8.9, 9.0, 10.1, 11.2]
+      ..anyAmbiguousType = example.AnyAmbiguousAliasesTypeId.M2
+      ..anyAmbiguous = null
+      ..vectorOfEnums = [example.Color.Blue, example.Color.Green]
+      ..signedEnum = example.Race.None;
+
+    final fbBuilder = Builder();
+    final offset = monster.pack(fbBuilder);
+    expect(offset, isNonZero);
+    fbBuilder.finish(offset);
+    final data = fbBuilder.buffer;
+
+    // TODO currently broken because of struct builder issue, see #6688
+    // final monster2 = example.Monster(data); // Monster (reader)
+    // expect(
+    //     // map Monster => MonsterT, Vec3 => Vec3T, ...
+    //     monster2.toString().replaceAllMapped(
+    //         RegExp('([a-zA-z0-9]+){'), (match) => match.group(1) + 'T{'),
+    //     monster.toString());
+    //
+    // final monster3 = monster2.unpack(); // MonsterT
+    // expect(monster3.toString(), monster.toString());
+  }
+
+  void test_Lists() {
+    // Ensure unpack() reads lists eagerly by reusing the same builder and
+    // overwriting data. Why: because standard reader reads lists lazily...
+    final fbb = Builder();
+
+    final object1 = example.TypeAliasesT(v8: [1, 2, 3], vf64: [5, 6]);
+    fbb.finish(object1.pack(fbb));
+    final object1Read = example.TypeAliases(fbb.buffer).unpack();
+
+    // overwrite the original buffer by writing to the same builder
+    fbb.reset();
+    final object2 = example.TypeAliasesT(v8: [7, 8, 9], vf64: [10, 11]);
+    fbb.finish(object2.pack(fbb));
+    final object2Read = example.TypeAliases(fbb.buffer).unpack();
+
+    // this is fine even with lazy lists:
+    expect(object2.toString(), object2Read.toString());
+
+    // this fails with lazy lists:
+    expect(object1.toString(), object1Read.toString());
+
+    // empty list must be serialized as such (were stored NULL before v2.0)
+    fbb.reset();
+    final object3 = example.TypeAliasesT(v8: [], vf64: null);
+    fbb.finish(object3.pack(fbb));
+    final object3Read = example.TypeAliases(fbb.buffer).unpack();
+    expect(object3.toString(), object3Read.toString());
   }
 }
 
@@ -604,8 +857,8 @@ class StringListWrapperImpl {
 
   StringListWrapperImpl(this.bp, this.offset);
 
-  List<String> get items => const ListReader<String>(const StringReader())
+  List<String>? get items => const ListReader<String>(StringReader())
-      .vTableGet(bp, offset, indexToField(0));
+      .vTableGetNullable(bp, offset, indexToField(0));
 }
 
 class StringListWrapperReader extends TableReader<StringListWrapperImpl> {
@@ -613,7 +866,7 @@ class StringListWrapperReader extends TableReader<StringListWrapperImpl> {
 
   @override
   StringListWrapperImpl createObject(BufferContext object, int offset) {
-    return new StringListWrapperImpl(object, offset);
+    return StringListWrapperImpl(object, offset);
   }
 }
 
@@ -633,7 +886,7 @@ class TestPointReader extends TableReader<TestPointImpl> {
 
   @override
   TestPointImpl createObject(BufferContext object, int offset) {
-    return new TestPointImpl(object, offset);
+    return TestPointImpl(object, offset);
   }
 }
 
@@ -643,7 +896,38 @@ class GeneratorTest {
     expect(example.Color.values, same(example.Color.values));
     expect(example.Race.values, same(example.Race.values));
     expect(example.AnyTypeId.values, same(example.AnyTypeId.values));
-    expect(example.AnyUniqueAliasesTypeId.values, same(example.AnyUniqueAliasesTypeId.values));
+    expect(example.AnyUniqueAliasesTypeId.values,
-    expect(example.AnyAmbiguousAliasesTypeId.values, same(example.AnyAmbiguousAliasesTypeId.values));
+        same(example.AnyUniqueAliasesTypeId.values));
+    expect(example.AnyAmbiguousAliasesTypeId.values,
+        same(example.AnyAmbiguousAliasesTypeId.values));
+  }
+}
+
+// See #6869
+@reflectiveTest
+class ListOfEnumsTest {
+  void test_listOfEnums() async {
+    var mytable = example3.MyTableObjectBuilder(options: [
+      example3.OptionsEnum.A,
+      example3.OptionsEnum.B,
+      example3.OptionsEnum.C
+    ]);
+    var bytes = mytable.toBytes();
+    var mytable_read = example3.MyTable(bytes);
+    expect(mytable_read.options![0].value, example3.OptionsEnum.A.value);
+    expect(mytable_read.options![1].value, example3.OptionsEnum.B.value);
+    expect(mytable_read.options![2].value, example3.OptionsEnum.C.value);
+  }
+}
+
+@reflectiveTest
+class BoolInStructTest {
+  void test_boolInStruct() async {
+    var mystruct = example4.FooObjectBuilder(
+        myFoo: example4.FooPropertiesObjectBuilder(a: true, b: false));
+    var bytes = mystruct.toBytes();
+    var mystruct_read = example4.Foo(bytes);
+    expect(mystruct_read.myFoo!.a, true);
+    expect(mystruct_read.myFoo!.b, false);
   }
 }

dart/test/flex_builder_test.dart

@@ -58,18 +58,18 @@ void main() {
     {
       var flx = Builder();
       flx.addString('hello 😱');
-      expect(flx.finish(), [10, 104, 101, 108, 108, 111, 32, 240, 159, 152, 177, 0, 11, 20, 1]);
+      expect(flx.finish(),
+          [10, 104, 101, 108, 108, 111, 32, 240, 159, 152, 177, 0, 11, 20, 1]);
     }
   });
 
-  test('build vector', (){
+  test('build vector', () {
     {
       var flx = Builder()
         ..startVector()
         ..addInt(1)
         ..addInt(2)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [1, 2, 2, 64, 1]);
     }
     {
@@ -77,8 +77,7 @@ void main() {
         ..startVector()
         ..addInt(-1)
         ..addInt(256)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [255, 255, 0, 1, 4, 65, 1]);
     }
     {
@@ -86,8 +85,7 @@ void main() {
         ..startVector()
         ..addInt(-45)
         ..addInt(256000)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [211, 255, 255, 255, 0, 232, 3, 0, 8, 66, 1]);
     }
     {
@@ -95,9 +93,28 @@ void main() {
         ..startVector()
         ..addDouble(1.1)
         ..addDouble(-256)
-        ..end()
+        ..end();
-      ;
+      expect(flx.finish(), [
-      expect(flx.finish(), [154, 153, 153, 153, 153, 153, 241, 63, 0, 0, 0, 0, 0, 0, 112, 192, 16, 75, 1]);
+        154,
+        153,
+        153,
+        153,
+        153,
+        153,
+        241,
+        63,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        112,
+        192,
+        16,
+        75,
+        1
+      ]);
     }
     {
       var flx = Builder()
@@ -105,8 +122,7 @@ void main() {
         ..addInt(1)
         ..addInt(2)
         ..addInt(4)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [1, 2, 4, 3, 76, 1]);
     }
     {
@@ -115,19 +131,17 @@ void main() {
         ..addInt(-1)
         ..addInt(256)
         ..addInt(4)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [255, 255, 0, 1, 4, 0, 6, 77, 1]);
     }
     {
       var flx = Builder()
         ..startVector()
-          ..startVector()
+        ..startVector()
-          ..addInt(61)
+        ..addInt(61)
-          ..end()
-        ..addInt(64)
         ..end()
-      ;
+        ..addInt(64)
+        ..end();
       expect(flx.finish(), [1, 61, 2, 2, 64, 44, 4, 4, 40, 1]);
     }
     {
@@ -136,9 +150,31 @@ void main() {
         ..addString('foo')
         ..addString('bar')
         ..addString('baz')
-        ..end()
+        ..end();
-      ;
+      expect(flx.finish(), [
-      expect(flx.finish(), [3, 102, 111, 111, 0, 3, 98, 97, 114, 0, 3, 98, 97, 122, 0, 3, 15, 11, 7, 3, 60, 1]);
+        3,
+        102,
+        111,
+        111,
+        0,
+        3,
+        98,
+        97,
+        114,
+        0,
+        3,
+        98,
+        97,
+        122,
+        0,
+        3,
+        15,
+        11,
+        7,
+        3,
+        60,
+        1
+      ]);
     }
     {
       var flx = Builder()
@@ -149,9 +185,34 @@ void main() {
         ..addString('foo')
         ..addString('bar')
         ..addString('baz')
-        ..end()
+        ..end();
-      ;
+      expect(flx.finish(), [
-      expect(flx.finish(), [3, 102, 111, 111, 0, 3, 98, 97, 114, 0, 3, 98, 97, 122, 0, 6, 15, 11, 7, 18, 14, 10, 6, 60, 1]);
+        3,
+        102,
+        111,
+        111,
+        0,
+        3,
+        98,
+        97,
+        114,
+        0,
+        3,
+        98,
+        97,
+        122,
+        0,
+        6,
+        15,
+        11,
+        7,
+        18,
+        14,
+        10,
+        6,
+        60,
+        1
+      ]);
     }
     {
       var flx = Builder()
@@ -159,8 +220,7 @@ void main() {
         ..addBool(true)
         ..addBool(false)
         ..addBool(true)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [3, 1, 0, 1, 3, 144, 1]);
     }
     {
@@ -171,29 +231,83 @@ void main() {
         ..addInt(-5)
         ..addDouble(1.3)
         ..addBool(true)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [
-        3, 102, 111, 111, 0, 0, 0, 0,
+        3,
-        5, 0, 0, 0, 0, 0, 0, 0,
+        102,
-        15, 0, 0, 0, 0, 0, 0, 0,
+        111,
-        1, 0, 0, 0, 0, 0, 0, 0,
+        111,
-        251, 255, 255, 255, 255, 255, 255, 255,
+        0,
-        205, 204, 204, 204, 204, 204, 244, 63,
+        0,
-        1, 0, 0, 0, 0, 0, 0, 0,
+        0,
-        20, 4, 4, 15, 104, 45, 43, 1]);
+        0,
+        5,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        15,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        251,
+        255,
+        255,
+        255,
+        255,
+        255,
+        255,
+        255,
+        205,
+        204,
+        204,
+        204,
+        204,
+        204,
+        244,
+        63,
+        1,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        20,
+        4,
+        4,
+        15,
+        104,
+        45,
+        43,
+        1
+      ]);
     }
   });
 
-  test('build map', ()
+  test('build map', () {
-  {
     {
       var flx = Builder()
         ..startMap()
         ..addKey('a')
         ..addInt(12)
-        ..end()
+        ..end();
-      ;
       expect(flx.finish(), [97, 0, 1, 3, 1, 1, 1, 12, 4, 2, 36, 1]);
     }
     {
@@ -203,105 +317,270 @@ void main() {
         ..addInt(12)
         ..addKey('')
         ..addInt(45)
-        ..end()
+        ..end();
-      ;
+      expect(
-      expect(flx.finish(), [97, 0, 0, 2, 2, 5, 2, 1, 2, 45, 12, 4, 4, 4, 36, 1]);
+          flx.finish(), [97, 0, 0, 2, 2, 5, 2, 1, 2, 45, 12, 4, 4, 4, 36, 1]);
     }
     {
       var flx = Builder()
         ..startVector()
-          ..startMap()
+        ..startMap()
-            ..addKey('something')
+        ..addKey('something')
-            ..addInt(12)
+        ..addInt(12)
-          ..end()
-          ..startMap()
-            ..addKey('something')
-            ..addInt(45)
-          ..end()
         ..end()
-      ;
+        ..startMap()
-      expect(flx.finish(), [115, 111, 109, 101, 116, 104, 105, 110, 103, 0,
+        ..addKey('something')
-        1, 11, 1, 1, 1, 12, 4, 6, 1, 1, 45, 4, 2, 8, 4, 36, 36, 4, 40, 1]);
+        ..addInt(45)
+        ..end()
+        ..end();
+      expect(flx.finish(), [
+        115,
+        111,
+        109,
+        101,
+        116,
+        104,
+        105,
+        110,
+        103,
+        0,
+        1,
+        11,
+        1,
+        1,
+        1,
+        12,
+        4,
+        6,
+        1,
+        1,
+        45,
+        4,
+        2,
+        8,
+        4,
+        36,
+        36,
+        4,
+        40,
+        1
+      ]);
     }
   });
 
-  test('build blob', ()
+  test('build blob', () {
-  {
     {
-      var flx = Builder()
+      var flx = Builder()..addBlob(Uint8List.fromList([1, 2, 3]).buffer);
-        ..addBlob(Uint8List.fromList([1, 2, 3]).buffer)
-      ;
       expect(flx.finish(), [3, 1, 2, 3, 3, 100, 1]);
     }
   });
 
-  test('build from object', (){
+  test('build from object', () {
-    expect(Builder.buildFromObject(Uint8List.fromList([1, 2, 3]).buffer).asUint8List(), [3, 1, 2, 3, 3, 100, 1]);
+    expect(
+        Builder.buildFromObject(Uint8List.fromList([1, 2, 3]).buffer)
+            .asUint8List(),
+        [3, 1, 2, 3, 3, 100, 1]);
     expect(Builder.buildFromObject(null).asUint8List(), [0, 0, 1]);
     expect(Builder.buildFromObject(true).asUint8List(), [1, 104, 1]);
     expect(Builder.buildFromObject(false).asUint8List(), [0, 104, 1]);
     expect(Builder.buildFromObject(25).asUint8List(), [25, 4, 1]);
     expect(Builder.buildFromObject(-250).asUint8List(), [6, 255, 5, 2]);
-    expect(Builder.buildFromObject(-2.50).asUint8List(), [0, 0, 32, 192, 14, 4]);
+    expect(
-    expect(Builder.buildFromObject('Maxim').asUint8List(), [5, 77, 97, 120, 105, 109, 0, 6, 20, 1]);
+        Builder.buildFromObject(-2.50).asUint8List(), [0, 0, 32, 192, 14, 4]);
-    expect(Builder.buildFromObject([1, 3.3, 'max', true, null, false]).asUint8List(), [
+    expect(Builder.buildFromObject('Maxim').asUint8List(),
-      3, 109, 97, 120, 0, 0, 0, 0,
+        [5, 77, 97, 120, 105, 109, 0, 6, 20, 1]);
-      6, 0, 0, 0, 0, 0, 0, 0,
+    expect(
-      1, 0, 0, 0, 0, 0, 0, 0,
+        Builder.buildFromObject([1, 3.3, 'max', true, null, false])
-      102, 102, 102, 102, 102, 102, 10, 64,
+            .asUint8List(),
-      31, 0, 0, 0, 0, 0, 0, 0,
+        [
-      1, 0, 0, 0, 0, 0, 0, 0,
+          3,
-      0, 0, 0, 0, 0, 0, 0, 0,
+          109,
-      0, 0, 0, 0, 0, 0, 0, 0,
+          97,
-      4, 15, 20, 104, 0, 104, 54, 43, 1
+          120,
-    ]);
+          0,
-    expect(Builder.buildFromObject([{'something':12}, {'something': 45}]).asUint8List(), [
+          0,
-      115, 111, 109, 101, 116, 104, 105, 110, 103, 0,
+          0,
-      1, 11, 1, 1, 1, 12, 4, 6, 1, 1, 45, 4, 2, 8, 4, 36, 36, 4, 40, 1
+          0,
-    ]);
+          6,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          1,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          102,
+          102,
+          102,
+          102,
+          102,
+          102,
+          10,
+          64,
+          31,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          1,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          4,
+          15,
+          20,
+          104,
+          0,
+          104,
+          54,
+          43,
+          1
+        ]);
+    expect(
+        Builder.buildFromObject([
+          {'something': 12},
+          {'something': 45}
+        ]).asUint8List(),
+        [
+          115,
+          111,
+          109,
+          101,
+          116,
+          104,
+          105,
+          110,
+          103,
+          0,
+          1,
+          11,
+          1,
+          1,
+          1,
+          12,
+          4,
+          6,
+          1,
+          1,
+          45,
+          4,
+          2,
+          8,
+          4,
+          36,
+          36,
+          4,
+          40,
+          1
+        ]);
   });
 
-  test('add double indirectly', (){
+  test('add double indirectly', () {
-    var flx = Builder()
+    var flx = Builder()..addDoubleIndirectly(0.1);
-      ..addDoubleIndirectly(0.1)
-    ;
     expect(flx.finish(), [154, 153, 153, 153, 153, 153, 185, 63, 8, 35, 1]);
   });
 
-  test('add double indirectly to vector with cache', (){
+  test('add double indirectly to vector with cache', () {
     var flx = Builder()
       ..startVector()
       ..addDoubleIndirectly(0.1, cache: true)
       ..addDoubleIndirectly(0.1, cache: true)
       ..addDoubleIndirectly(0.1, cache: true)
       ..addDoubleIndirectly(0.1, cache: true)
-      ..end()
+      ..end();
-    ;
+    expect(flx.finish(), [
-    expect(flx.finish(), [154, 153, 153, 153, 153, 153, 185, 63,
+      154,
-      4, 9, 10, 11, 12, 35, 35, 35, 35, 8, 40, 1]);
+      153,
+      153,
+      153,
+      153,
+      153,
+      185,
+      63,
+      4,
+      9,
+      10,
+      11,
+      12,
+      35,
+      35,
+      35,
+      35,
+      8,
+      40,
+      1
+    ]);
   });
 
-  test('add int indirectly', (){
+  test('add int indirectly', () {
-    var flx = Builder()
+    var flx = Builder()..addIntIndirectly(2345234523452345);
-      ..addIntIndirectly(2345234523452345)
-    ;
     expect(flx.finish(), [185, 115, 175, 118, 250, 84, 8, 0, 8, 27, 1]);
   });
 
-  test('add int indirectly to vector with cache', (){
+  test('add int indirectly to vector with cache', () {
     var flx = Builder()
       ..startVector()
       ..addIntIndirectly(2345234523452345, cache: true)
       ..addIntIndirectly(2345234523452345, cache: true)
       ..addIntIndirectly(2345234523452345, cache: true)
       ..addIntIndirectly(2345234523452345, cache: true)
-      ..end()
+      ..end();
-    ;
+    expect(flx.finish(), [
-    expect(flx.finish(), [185, 115, 175, 118, 250, 84, 8, 0,
+      185,
-      4, 9, 10, 11, 12, 27, 27, 27, 27, 8, 40, 1]);
+      115,
+      175,
+      118,
+      250,
+      84,
+      8,
+      0,
+      4,
+      9,
+      10,
+      11,
+      12,
+      27,
+      27,
+      27,
+      27,
+      8,
+      40,
+      1
+    ]);
   });
 
-  test('snapshot', (){
+  test('snapshot', () {
     var flx = Builder();
     flx.startVector();
     flx.addInt(12);
@@ -312,4 +591,3 @@ void main() {
     expect(flx.snapshot().asUint8List(), [12, 24, 45, 3, 76, 1]);
   });
 }
-

dart/test/flex_types_test.dart

@@ -48,69 +48,116 @@ void main() {
     expect(ValueTypeUtils.isFixedTypedVector(ValueType.VectorInt), isFalse);
   });
   test('to typed vector', () {
-    expect(ValueTypeUtils.toTypedVector(ValueType.Int,0), equals(ValueType.VectorInt));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Int, 0),
-    expect(ValueTypeUtils.toTypedVector(ValueType.UInt,0), equals(ValueType.VectorUInt));
+        equals(ValueType.VectorInt));
-    expect(ValueTypeUtils.toTypedVector(ValueType.Bool,0), equals(ValueType.VectorBool));
+    expect(ValueTypeUtils.toTypedVector(ValueType.UInt, 0),
-    expect(ValueTypeUtils.toTypedVector(ValueType.Float,0), equals(ValueType.VectorFloat));
+        equals(ValueType.VectorUInt));
-    expect(ValueTypeUtils.toTypedVector(ValueType.Key,0), equals(ValueType.VectorKey));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Bool, 0),
-    expect(ValueTypeUtils.toTypedVector(ValueType.String,0), equals(ValueType.VectorString));
+        equals(ValueType.VectorBool));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Float, 0),
+        equals(ValueType.VectorFloat));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Key, 0),
+        equals(ValueType.VectorKey));
+    expect(ValueTypeUtils.toTypedVector(ValueType.String, 0),
+        equals(ValueType.VectorString));
 
-    expect(ValueTypeUtils.toTypedVector(ValueType.Int,2), equals(ValueType.VectorInt2));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Int, 2),
-    expect(ValueTypeUtils.toTypedVector(ValueType.UInt,2), equals(ValueType.VectorUInt2));
+        equals(ValueType.VectorInt2));
-    expect(ValueTypeUtils.toTypedVector(ValueType.Float,2), equals(ValueType.VectorFloat2));
+    expect(ValueTypeUtils.toTypedVector(ValueType.UInt, 2),
+        equals(ValueType.VectorUInt2));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Float, 2),
+        equals(ValueType.VectorFloat2));
 
-    expect(ValueTypeUtils.toTypedVector(ValueType.Int,3), equals(ValueType.VectorInt3));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Int, 3),
-    expect(ValueTypeUtils.toTypedVector(ValueType.UInt,3), equals(ValueType.VectorUInt3));
+        equals(ValueType.VectorInt3));
-    expect(ValueTypeUtils.toTypedVector(ValueType.Float,3), equals(ValueType.VectorFloat3));
+    expect(ValueTypeUtils.toTypedVector(ValueType.UInt, 3),
+        equals(ValueType.VectorUInt3));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Float, 3),
+        equals(ValueType.VectorFloat3));
 
-    expect(ValueTypeUtils.toTypedVector(ValueType.Int,4), equals(ValueType.VectorInt4));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Int, 4),
-    expect(ValueTypeUtils.toTypedVector(ValueType.UInt,4), equals(ValueType.VectorUInt4));
+        equals(ValueType.VectorInt4));
-    expect(ValueTypeUtils.toTypedVector(ValueType.Float,4), equals(ValueType.VectorFloat4));
+    expect(ValueTypeUtils.toTypedVector(ValueType.UInt, 4),
+        equals(ValueType.VectorUInt4));
+    expect(ValueTypeUtils.toTypedVector(ValueType.Float, 4),
+        equals(ValueType.VectorFloat4));
   });
   test('typed vector element type', () {
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorInt), equals(ValueType.Int));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorInt),
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorUInt), equals(ValueType.UInt));
+        equals(ValueType.Int));
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorFloat), equals(ValueType.Float));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorUInt),
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorString), equals(ValueType.String));
+        equals(ValueType.UInt));
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorKey), equals(ValueType.Key));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorFloat),
-    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorBool), equals(ValueType.Bool));
+        equals(ValueType.Float));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorString),
+        equals(ValueType.String));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorKey),
+        equals(ValueType.Key));
+    expect(ValueTypeUtils.typedVectorElementType(ValueType.VectorBool),
+        equals(ValueType.Bool));
   });
   test('fixed typed vector element type', () {
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt2), equals(ValueType.Int));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt2),
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt3), equals(ValueType.Int));
+        equals(ValueType.Int));
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt4), equals(ValueType.Int));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt3),
+        equals(ValueType.Int));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorInt4),
+        equals(ValueType.Int));
 
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt2), equals(ValueType.UInt));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt2),
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt3), equals(ValueType.UInt));
+        equals(ValueType.UInt));
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt4), equals(ValueType.UInt));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt3),
+        equals(ValueType.UInt));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorUInt4),
+        equals(ValueType.UInt));
 
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat2), equals(ValueType.Float));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat2),
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat3), equals(ValueType.Float));
+        equals(ValueType.Float));
-    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat4), equals(ValueType.Float));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat3),
+        equals(ValueType.Float));
+    expect(ValueTypeUtils.fixedTypedVectorElementType(ValueType.VectorFloat4),
+        equals(ValueType.Float));
   });
   test('fixed typed vector element size', () {
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt2), equals(2));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt2),
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt3), equals(3));
+        equals(2));
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt4), equals(4));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt3),
+        equals(3));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorInt4),
+        equals(4));
 
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt2), equals(2));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt2),
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt3), equals(3));
+        equals(2));
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt4), equals(4));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt3),
+        equals(3));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorUInt4),
+        equals(4));
 
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat2), equals(2));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat2),
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat3), equals(3));
+        equals(2));
-    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat4), equals(4));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat3),
+        equals(3));
+    expect(ValueTypeUtils.fixedTypedVectorElementSize(ValueType.VectorFloat4),
+        equals(4));
   });
   test('packed type', () {
-    expect(ValueTypeUtils.packedType(ValueType.Null, BitWidth.width8), equals(0));
+    expect(
-    expect(ValueTypeUtils.packedType(ValueType.Null, BitWidth.width16), equals(1));
+        ValueTypeUtils.packedType(ValueType.Null, BitWidth.width8), equals(0));
-    expect(ValueTypeUtils.packedType(ValueType.Null, BitWidth.width32), equals(2));
+    expect(
-    expect(ValueTypeUtils.packedType(ValueType.Null, BitWidth.width64), equals(3));
+        ValueTypeUtils.packedType(ValueType.Null, BitWidth.width16), equals(1));
+    expect(
+        ValueTypeUtils.packedType(ValueType.Null, BitWidth.width32), equals(2));
+    expect(
+        ValueTypeUtils.packedType(ValueType.Null, BitWidth.width64), equals(3));
 
-    expect(ValueTypeUtils.packedType(ValueType.Int, BitWidth.width8), equals(4));
+    expect(
-    expect(ValueTypeUtils.packedType(ValueType.Int, BitWidth.width16), equals(5));
+        ValueTypeUtils.packedType(ValueType.Int, BitWidth.width8), equals(4));
-    expect(ValueTypeUtils.packedType(ValueType.Int, BitWidth.width32), equals(6));
+    expect(
-    expect(ValueTypeUtils.packedType(ValueType.Int, BitWidth.width64), equals(7));
+        ValueTypeUtils.packedType(ValueType.Int, BitWidth.width16), equals(5));
+    expect(
+        ValueTypeUtils.packedType(ValueType.Int, BitWidth.width32), equals(6));
+    expect(
+        ValueTypeUtils.packedType(ValueType.Int, BitWidth.width64), equals(7));
   });
   test('bit width', () {
     expect(BitWidthUtil.width(0), BitWidth.width8);

dart/test/keyword_test_keyword_test_generated.dart

@@ -0,0 +1,280 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+// ignore_for_file: unused_import, unused_field, unused_element, unused_local_variable
+
+library keyword_test;
+
+import 'dart:typed_data' show Uint8List;
+import 'package:flat_buffers/flat_buffers.dart' as fb;
+
+
+class Abc {
+  final int value;
+  const Abc._(this.value);
+
+  factory Abc.fromValue(int value) {
+    final result = values[value];
+    if (result == null) {
+        throw StateError('Invalid value $value for bit flag enum Abc');
+    }
+    return result;
+  }
+
+  static Abc? _createOrNull(int? value) => 
+      value == null ? null : Abc.fromValue(value);
+
+  static const int minValue = 0;
+  static const int maxValue = 2;
+  static bool containsValue(int value) => values.containsKey(value);
+
+  static const Abc $void = Abc._(0);
+  static const Abc where = Abc._(1);
+  static const Abc stackalloc = Abc._(2);
+  static const Map<int, Abc> values = {
+    0: $void,
+    1: where,
+    2: stackalloc};
+
+  static const fb.Reader<Abc> reader = _AbcReader();
+
+  @override
+  String toString() {
+    return 'Abc{value: $value}';
+  }
+}
+
+class _AbcReader extends fb.Reader<Abc> {
+  const _AbcReader();
+
+  @override
+  int get size => 4;
+
+  @override
+  Abc read(fb.BufferContext bc, int offset) =>
+      Abc.fromValue(const fb.Int32Reader().read(bc, offset));
+}
+
+class Public {
+  final int value;
+  const Public._(this.value);
+
+  factory Public.fromValue(int value) {
+    final result = values[value];
+    if (result == null) {
+        throw StateError('Invalid value $value for bit flag enum Public');
+    }
+    return result;
+  }
+
+  static Public? _createOrNull(int? value) => 
+      value == null ? null : Public.fromValue(value);
+
+  static const int minValue = 0;
+  static const int maxValue = 0;
+  static bool containsValue(int value) => values.containsKey(value);
+
+  static const Public NONE = Public._(0);
+  static const Map<int, Public> values = {
+    0: NONE};
+
+  static const fb.Reader<Public> reader = _PublicReader();
+
+  @override
+  String toString() {
+    return 'Public{value: $value}';
+  }
+}
+
+class _PublicReader extends fb.Reader<Public> {
+  const _PublicReader();
+
+  @override
+  int get size => 4;
+
+  @override
+  Public read(fb.BufferContext bc, int offset) =>
+      Public.fromValue(const fb.Int32Reader().read(bc, offset));
+}
+
+class KeywordsInUnionTypeId {
+  final int value;
+  const KeywordsInUnionTypeId._(this.value);
+
+  factory KeywordsInUnionTypeId.fromValue(int value) {
+    final result = values[value];
+    if (result == null) {
+        throw StateError('Invalid value $value for bit flag enum KeywordsInUnionTypeId');
+    }
+    return result;
+  }
+
+  static KeywordsInUnionTypeId? _createOrNull(int? value) => 
+      value == null ? null : KeywordsInUnionTypeId.fromValue(value);
+
+  static const int minValue = 0;
+  static const int maxValue = 2;
+  static bool containsValue(int value) => values.containsKey(value);
+
+  static const KeywordsInUnionTypeId NONE = KeywordsInUnionTypeId._(0);
+  static const KeywordsInUnionTypeId $static = KeywordsInUnionTypeId._(1);
+  static const KeywordsInUnionTypeId internal = KeywordsInUnionTypeId._(2);
+  static const Map<int, KeywordsInUnionTypeId> values = {
+    0: NONE,
+    1: $static,
+    2: internal};
+
+  static const fb.Reader<KeywordsInUnionTypeId> reader = _KeywordsInUnionTypeIdReader();
+
+  @override
+  String toString() {
+    return 'KeywordsInUnionTypeId{value: $value}';
+  }
+}
+
+class _KeywordsInUnionTypeIdReader extends fb.Reader<KeywordsInUnionTypeId> {
+  const _KeywordsInUnionTypeIdReader();
+
+  @override
+  int get size => 1;
+
+  @override
+  KeywordsInUnionTypeId read(fb.BufferContext bc, int offset) =>
+      KeywordsInUnionTypeId.fromValue(const fb.Uint8Reader().read(bc, offset));
+}
+
+class KeywordsInTable {
+  KeywordsInTable._(this._bc, this._bcOffset);
+  factory KeywordsInTable(List<int> bytes) {
+    final rootRef = fb.BufferContext.fromBytes(bytes);
+    return reader.read(rootRef, 0);
+  }
+
+  static const fb.Reader<KeywordsInTable> reader = _KeywordsInTableReader();
+
+  final fb.BufferContext _bc;
+  final int _bcOffset;
+
+  Abc get $is => Abc.fromValue(const fb.Int32Reader().vTableGet(_bc, _bcOffset, 4, 0));
+  Public get private => Public.fromValue(const fb.Int32Reader().vTableGet(_bc, _bcOffset, 6, 0));
+  int get type => const fb.Int32Reader().vTableGet(_bc, _bcOffset, 8, 0);
+  bool get $default => const fb.BoolReader().vTableGet(_bc, _bcOffset, 10, false);
+
+  @override
+  String toString() {
+    return 'KeywordsInTable{\$is: ${$is}, private: ${private}, type: ${type}, \$default: ${$default}}';
+  }
+
+  KeywordsInTableT unpack() => KeywordsInTableT(
+      $is: $is,
+      private: private,
+      type: type,
+      $default: $default);
+
+  static int pack(fb.Builder fbBuilder, KeywordsInTableT? object) {
+    if (object == null) return 0;
+    return object.pack(fbBuilder);
+  }
+}
+
+class KeywordsInTableT implements fb.Packable {
+  Abc $is;
+  Public private;
+  int type;
+  bool $default;
+
+  KeywordsInTableT({
+      this.$is = Abc.$void,
+      this.private = Public.NONE,
+      this.type = 0,
+      this.$default = false});
+
+  @override
+  int pack(fb.Builder fbBuilder) {
+    fbBuilder.startTable(4);
+    fbBuilder.addInt32(0, $is.value);
+    fbBuilder.addInt32(1, private.value);
+    fbBuilder.addInt32(2, type);
+    fbBuilder.addBool(3, $default);
+    return fbBuilder.endTable();
+  }
+
+  @override
+  String toString() {
+    return 'KeywordsInTableT{\$is: ${$is}, private: ${private}, type: ${type}, \$default: ${$default}}';
+  }
+}
+
+class _KeywordsInTableReader extends fb.TableReader<KeywordsInTable> {
+  const _KeywordsInTableReader();
+
+  @override
+  KeywordsInTable createObject(fb.BufferContext bc, int offset) => 
+    KeywordsInTable._(bc, offset);
+}
+
+class KeywordsInTableBuilder {
+  KeywordsInTableBuilder(this.fbBuilder);
+
+  final fb.Builder fbBuilder;
+
+  void begin() {
+    fbBuilder.startTable(4);
+  }
+
+  int addIs(Abc? $is) {
+    fbBuilder.addInt32(0, $is?.value);
+    return fbBuilder.offset;
+  }
+  int addPrivate(Public? private) {
+    fbBuilder.addInt32(1, private?.value);
+    return fbBuilder.offset;
+  }
+  int addType(int? type) {
+    fbBuilder.addInt32(2, type);
+    return fbBuilder.offset;
+  }
+  int addDefault(bool? $default) {
+    fbBuilder.addBool(3, $default);
+    return fbBuilder.offset;
+  }
+
+  int finish() {
+    return fbBuilder.endTable();
+  }
+}
+
+class KeywordsInTableObjectBuilder extends fb.ObjectBuilder {
+  final Abc? _$is;
+  final Public? _private;
+  final int? _type;
+  final bool? _$default;
+
+  KeywordsInTableObjectBuilder({
+    Abc? $is,
+    Public? private,
+    int? type,
+    bool? $default,
+  })
+      : _$is = $is,
+        _private = private,
+        _type = type,
+        _$default = $default;
+
+  /// Finish building, and store into the [fbBuilder].
+  @override
+  int finish(fb.Builder fbBuilder) {
+    fbBuilder.startTable(4);
+    fbBuilder.addInt32(0, _$is?.value);
+    fbBuilder.addInt32(1, _private?.value);
+    fbBuilder.addInt32(2, _type);
+    fbBuilder.addBool(3, _$default);
+    return fbBuilder.endTable();
+  }
+
+  /// Convenience method to serialize to byte list.
+  @override
+  Uint8List toBytes([String? fileIdentifier]) {
+    final fbBuilder = fb.Builder(deduplicateTables: false);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
+    return fbBuilder.buffer;
+  }
+}

dart/test/list_of_enums.fbs

@@ -0,0 +1,10 @@
+enum OptionsEnum : uint32
+{
+    A = 1,
+    B = 2,
+    C = 3
+}
+
+table MyTable {
+    options : [OptionsEnum];
+}

dart/test/monster_test.fbs

@@ -0,0 +1,154 @@
+// test schema file
+
+include "include_test1.fbs";
+
+namespace MyGame;
+
+table InParentNamespace {}
+
+namespace MyGame.Example2;
+
+table Monster {}  // Test having same name as below, but in different namespace.
+
+namespace MyGame.Example;
+
+attribute "priority";
+
+/// Composite components of Monster color.
+enum Color:ubyte (bit_flags) {
+  Red = 0, // color Red = (1u << 0)
+  /// \brief color Green
+  /// Green is bit_flag with value (1u << 1)
+  Green,
+  /// \brief color Blue (1u << 3)
+  Blue = 3,
+}
+
+enum Race:byte {
+  None = -1,
+  Human = 0,
+  Dwarf,
+  Elf,
+}
+
+union Any { Monster, TestSimpleTableWithEnum, MyGame.Example2.Monster }
+
+union AnyUniqueAliases { M: Monster, TS: TestSimpleTableWithEnum, M2: MyGame.Example2.Monster }
+union AnyAmbiguousAliases { M1: Monster, M2: Monster, M3: Monster }
+
+struct Test { a:short; b:byte; }
+
+table TestSimpleTableWithEnum (csharp_partial, private) {
+  color: Color = Green;
+}
+
+struct Vec3 (force_align: 8) {
+  x:float;
+  y:float;
+  z:float;
+  test1:double;
+  test2:Color;
+  test3:Test;
+}
+
+struct Ability {
+  id:uint(key);
+  distance:uint;
+}
+
+struct StructOfStructs {
+  a: Ability;
+  b: Test;
+  c: Ability;
+}
+
+table Stat {
+  id:string;
+  val:long;
+  count:ushort (key);
+}
+
+table Referrable {
+  id:ulong(key, hash:"fnv1a_64");
+}
+
+/// an example documentation comment: "monster object"
+table Monster {
+  pos:Vec3 (id: 0);
+  hp:short = 100 (id: 2);
+  mana:short = 150 (id: 1);
+  name:string (id: 3, key);
+  color:Color = Blue (id: 6);
+  inventory:[ubyte] (id: 5);
+  friendly:bool = false (deprecated, priority: 1, id: 4);
+  /// an example documentation comment: this will end up in the generated code
+  /// multiline too
+  testarrayoftables:[Monster] (id: 11);
+  testarrayofstring:[string] (id: 10);
+  testarrayofstring2:[string] (id: 28);
+  testarrayofbools:[bool] (id: 24);
+  testarrayofsortedstruct:[Ability] (id: 29);
+  enemy:MyGame.Example.Monster (id:12);  // Test referring by full namespace.
+  test:Any (id: 8);
+  test4:[Test] (id: 9);
+  test5:[Test] (id: 31);
+  testnestedflatbuffer:[ubyte] (id:13, nested_flatbuffer: "Monster");
+  testempty:Stat (id:14);
+  testbool:bool (id:15);
+  testhashs32_fnv1:int (id:16, hash:"fnv1_32");
+  testhashu32_fnv1:uint (id:17, hash:"fnv1_32");
+  testhashs64_fnv1:long (id:18, hash:"fnv1_64");
+  testhashu64_fnv1:ulong (id:19, hash:"fnv1_64");
+  testhashs32_fnv1a:int (id:20, hash:"fnv1a_32");
+  testhashu32_fnv1a:uint (id:21, hash:"fnv1a_32", cpp_type:"Stat");
+  testhashs64_fnv1a:long (id:22, hash:"fnv1a_64");
+  testhashu64_fnv1a:ulong (id:23, hash:"fnv1a_64");
+  testf:float = 3.14159 (id:25);
+  testf2:float = 3 (id:26);
+  testf3:float (id:27);
+  flex:[ubyte] (id:30, flexbuffer);
+  vector_of_longs:[long] (id:32);
+  vector_of_doubles:[double] (id:33);
+  parent_namespace_test:InParentNamespace (id:34);
+  vector_of_referrables:[Referrable](id:35);
+  single_weak_reference:ulong(id:36, hash:"fnv1a_64", cpp_type:"ReferrableT");
+  vector_of_weak_references:[ulong](id:37, hash:"fnv1a_64", cpp_type:"ReferrableT");
+  vector_of_strong_referrables:[Referrable](id:38, cpp_ptr_type:"default_ptr_type");                 //was shared_ptr
+  co_owning_reference:ulong(id:39, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked");  //was shared_ptr as well
+  vector_of_co_owning_references:[ulong](id:40, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"default_ptr_type", cpp_ptr_type_get:".get()");  //was shared_ptr
+  non_owning_reference:ulong(id:41, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:"");                              //was weak_ptr
+  vector_of_non_owning_references:[ulong](id:42, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:"");                 //was weak_ptr
+  any_unique:AnyUniqueAliases(id:44);
+  any_ambiguous:AnyAmbiguousAliases (id:46);
+  vector_of_enums:[Color] (id:47);
+  signed_enum:Race = None (id:48);
+  testrequirednestedflatbuffer:[ubyte] (id:49, nested_flatbuffer: "Monster");
+  scalar_key_sorted_tables:[Stat] (id: 50);
+}
+
+table TypeAliases {
+    i8:int8;
+    u8:uint8;
+    i16:int16;
+    u16:uint16;
+    i32:int32;
+    u32:uint32;
+    i64:int64;
+    u64:uint64;
+    f32:float32;
+    f64:float64;
+    v8:[int8];
+    vf64:[float64];
+}
+
+rpc_service MonsterStorage {
+  Store(Monster):Stat (streaming: "none");
+  Retrieve(Stat):Monster (streaming: "server", idempotent);
+  GetMaxHitPoint(Monster):Stat (streaming: "client");
+  GetMinMaxHitPoints(Monster):Stat (streaming: "bidi");
+}
+
+root_type Monster;
+
+file_identifier "MONS";
+file_extension "mon";

dart/test/monster_test_my_game.example2_generated.dart

@@ -1,5 +1,5 @@
 // automatically generated by the FlatBuffers compiler, do not modify
-// ignore_for_file: unused_import, unused_field, unused_local_variable
+// ignore_for_file: unused_import, unused_field, unused_element, unused_local_variable
 
 library my_game.example2;
 
@@ -12,11 +12,11 @@ import './monster_test_my_game.example_generated.dart' as my_game_example;
 class Monster {
   Monster._(this._bc, this._bcOffset);
   factory Monster(List<int> bytes) {
-    fb.BufferContext rootRef = new fb.BufferContext.fromBytes(bytes);
+    final rootRef = fb.BufferContext.fromBytes(bytes);
     return reader.read(rootRef, 0);
   }
 
-  static const fb.Reader<Monster> reader = const _MonsterReader();
+  static const fb.Reader<Monster> reader = _MonsterReader();
 
   final fb.BufferContext _bc;
   final int _bcOffset;
@@ -26,6 +26,26 @@ class Monster {
   String toString() {
     return 'Monster{}';
   }
+
+  MonsterT unpack() => MonsterT();
+
+  static int pack(fb.Builder fbBuilder, MonsterT? object) {
+    if (object == null) return 0;
+    return object.pack(fbBuilder);
+  }
+}
+
+class MonsterT implements fb.Packable {
+  @override
+  int pack(fb.Builder fbBuilder) {
+    fbBuilder.startTable(0);
+    return fbBuilder.endTable();
+  }
+
+  @override
+  String toString() {
+    return 'MonsterT{}';
+  }
 }
 
 class _MonsterReader extends fb.TableReader<Monster> {
@@ -33,7 +53,7 @@ class _MonsterReader extends fb.TableReader<Monster> {
 
   @override
   Monster createObject(fb.BufferContext bc, int offset) => 
-    new Monster._(bc, offset);
+    Monster._(bc, offset);
 }
 
 class MonsterObjectBuilder extends fb.ObjectBuilder {
@@ -42,19 +62,16 @@ class MonsterObjectBuilder extends fb.ObjectBuilder {
 
   /// Finish building, and store into the [fbBuilder].
   @override
-  int finish(
+  int finish(fb.Builder fbBuilder) {
-    fb.Builder fbBuilder) {
+    fbBuilder.startTable(0);
-    assert(fbBuilder != null);
-
-    fbBuilder.startTable();
     return fbBuilder.endTable();
   }
 
   /// Convenience method to serialize to byte list.
   @override
-  Uint8List toBytes([String fileIdentifier]) {
+  Uint8List toBytes([String? fileIdentifier]) {
-    fb.Builder fbBuilder = new fb.Builder();
+    final fbBuilder = fb.Builder(deduplicateTables: false);
-    int offset = finish(fbBuilder);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
-    return fbBuilder.finish(offset, fileIdentifier);
+    return fbBuilder.buffer;
   }
 }

dart/test/monster_test_my_game_generated.dart

@@ -1,5 +1,5 @@
 // automatically generated by the FlatBuffers compiler, do not modify
-// ignore_for_file: unused_import, unused_field, unused_local_variable
+// ignore_for_file: unused_import, unused_field, unused_element, unused_local_variable
 
 library my_game;
 
@@ -12,11 +12,11 @@ import './monster_test_my_game.example2_generated.dart' as my_game_example2;
 class InParentNamespace {
   InParentNamespace._(this._bc, this._bcOffset);
   factory InParentNamespace(List<int> bytes) {
-    fb.BufferContext rootRef = new fb.BufferContext.fromBytes(bytes);
+    final rootRef = fb.BufferContext.fromBytes(bytes);
     return reader.read(rootRef, 0);
   }
 
-  static const fb.Reader<InParentNamespace> reader = const _InParentNamespaceReader();
+  static const fb.Reader<InParentNamespace> reader = _InParentNamespaceReader();
 
   final fb.BufferContext _bc;
   final int _bcOffset;
@@ -26,6 +26,26 @@ class InParentNamespace {
   String toString() {
     return 'InParentNamespace{}';
   }
+
+  InParentNamespaceT unpack() => InParentNamespaceT();
+
+  static int pack(fb.Builder fbBuilder, InParentNamespaceT? object) {
+    if (object == null) return 0;
+    return object.pack(fbBuilder);
+  }
+}
+
+class InParentNamespaceT implements fb.Packable {
+  @override
+  int pack(fb.Builder fbBuilder) {
+    fbBuilder.startTable(0);
+    return fbBuilder.endTable();
+  }
+
+  @override
+  String toString() {
+    return 'InParentNamespaceT{}';
+  }
 }
 
 class _InParentNamespaceReader extends fb.TableReader<InParentNamespace> {
@@ -33,7 +53,7 @@ class _InParentNamespaceReader extends fb.TableReader<InParentNamespace> {
 
   @override
   InParentNamespace createObject(fb.BufferContext bc, int offset) => 
-    new InParentNamespace._(bc, offset);
+    InParentNamespace._(bc, offset);
 }
 
 class InParentNamespaceObjectBuilder extends fb.ObjectBuilder {
@@ -42,19 +62,16 @@ class InParentNamespaceObjectBuilder extends fb.ObjectBuilder {
 
   /// Finish building, and store into the [fbBuilder].
   @override
-  int finish(
+  int finish(fb.Builder fbBuilder) {
-    fb.Builder fbBuilder) {
+    fbBuilder.startTable(0);
-    assert(fbBuilder != null);
-
-    fbBuilder.startTable();
     return fbBuilder.endTable();
   }
 
   /// Convenience method to serialize to byte list.
   @override
-  Uint8List toBytes([String fileIdentifier]) {
+  Uint8List toBytes([String? fileIdentifier]) {
-    fb.Builder fbBuilder = new fb.Builder();
+    final fbBuilder = fb.Builder(deduplicateTables: false);
-    int offset = finish(fbBuilder);
+    fbBuilder.finish(finish(fbBuilder), fileIdentifier);
-    return fbBuilder.finish(offset, fileIdentifier);
+    return fbBuilder.buffer;
   }
 }

docs/source/Building.md

@@ -31,24 +31,22 @@ run 'flattests' or `flatsampletext`, or it will fail to load its files.*
 
 ### Make all warnings into errors
 
-By default all Flatbuffers `cmake` targets are build with `-Werror` flag.
+By default all Flatbuffers `cmake` targets are **not** built with the `-Werror` 
-With this flag (or `/WX` for MSVC) C++ compiler will treat all warnings as errors.
+(or `/WX` for MSVC) flag that treats any warning as an error. This allows more 
-Additionally `-Wall -pedantic -Wextra` (or `/W4` form MSVC) flags are set.
+flexibility for users of Flatbuffers to use newer compilers and toolsets that
-These flags minimize the number of possible defects in code and keep code highly portable.
+may add new warnings that would cause a build failure.
-Using these flags is considered good practice but sometimes it can break dependent projects 
-if a compiler is upgraded or a toolset is changed.
-Usually, newer compiler versions add new compile-time diagnostics that were unavailable before.
-These new diagnostic warnings could stop the build process if `-Werror` flag is set.
 
-It is possible to cancel `warnings as errors` flag at `cmake` configuration stage using 
+To enable a stricter build that does treat warnings as errors, set the
-`FLATBUFFERS_CXX_FLAGS` option. Compilation flags declared in `FLATBUFFERS_CXX_FLAGS` will be 
+`FLATBUFFERS_STRICT_MODE` `cmake` compliation flag to `ON`. 
-appended to the project-level `CMAKE_CXX_FLAGS` variable.
-Examples:
 
-- GCC and Clang: `cmake . -D FLATBUFFERS_CXX_FLAGS="-Wno-error"`
+```
-- MSVC: `cmake . -D FLATBUFFERS_CXX_FLAGS="/WX-"`
+cmake . -DFLATBUFFERS_STRICT_MODE=ON
-- MSVC: `cmake . -D FLATBUFFERS_CXX_FLAGS="/Wv <compiler.version>"`
+```
 
+Our CI builds run with strict mode on, ensuring the code that is committed to 
+the project is as portable and warning free as possible. Thus developers
+contributing to the project should enable strict mode locally before making a 
+PR.
 
 ## Building with VCPKG
 
@@ -63,6 +61,18 @@ You can download and install flatbuffers using the [vcpkg](https://github.com/Mi
 The flatbuffers port in vcpkg is kept up to date by Microsoft team members and community contributors.
 If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
 
+## Downloading binaries
+You can download the binaries from the
+[GitHub release page](https://github.com/google/flatbuffers/releases).
+
+We generate [SLSA3 signatures](slsa.dev) using the OpenSSF's [slsa-framework/slsa-github-generator](https://github.com/slsa-framework/slsa-github-generator). To verify the binaries:
+1. Install the verification tool from [slsa-framework/slsa-verifier#installation](https://github.com/slsa-framework/slsa-verifier#installation)
+1. Download the file named `attestation.intoto.jsonl` from the GitHub release
+1. Run:
+```shell
+$ slsa-verifier -artifact-path <downloaded.zip> -provenance attestation.intoto.jsonl -source github.com/google/flatbuffers -tag <version>
+  PASSED: Verified SLSA provenance
+
 ## Building for Android
 
 There is a `flatbuffers/android` directory that contains all you need to build
@@ -121,14 +131,3 @@ add this directive:
 set(FLATBUFFERS_MAX_PARSING_DEPTH 16)
 ```
 to `CMakeLists.txt` file before `add_subdirectory(${FLATBUFFERS_SRC_DIR})` line.
-
-#### For Google Play apps
-
-For applications on Google Play that integrate this library, usage is tracked.
-This tracking is done automatically using the embedded version string
-(flatbuffer_version_string), and helps us continue to optimize it.
-Aside from consuming a few extra bytes in your application binary, it shouldn't
-affect your application at all. We use this information to let us know if
-FlatBuffers is useful and if we should continue to invest in it. Since this is
-open source, you are free to remove the version string but we would appreciate
-if you would leave it in.

docs/source/CUsage.md

@@ -7,7 +7,7 @@ The `flatcc` C schema compiler can generate code offline as well as
 online via a C library. It can also generate buffer verifiers and fast
 JSON parsers, printers.
 
-Great care has been taken to ensure compatibily with the main `flatc`
+Great care has been taken to ensure compatibility with the main `flatc`
 project.
 
 ## General Documention

docs/source/Compiler.md

@@ -79,7 +79,7 @@ Additional options:
 -   `--allow-non-utf8` : Pass non-UTF-8 input through parser and emit nonstandard
     \x escapes in JSON. (Default is to raise parse error on non-UTF-8 input.)
 
--  `--natural-utf8` : Output strings with UTF-8 as human-readable strings.
+-   `--natural-utf8` : Output strings with UTF-8 as human-readable strings.
      By default, UTF-8 characters are printed as \uXXXX escapes."
 
 -   `--defaults-json` : Output fields whose value is equal to the default value
@@ -101,7 +101,7 @@ Additional options:
 -   `--gen-mutable` : Generate additional non-const accessors for mutating
     FlatBuffers in-place.
 
--   `--gen-onefile` : Generate single output file for C# and Go.
+-   `--gen-onefile` : Generate single output file for C#, Go, and Python.
 
 -   `--gen-name-strings` : Generate type name functions for C++.
 
@@ -216,7 +216,13 @@ Additional options:
 -   `--flexbuffers` : Used with "binary" and "json" options, it generates
      data using schema-less FlexBuffers.
 
--    `--no-warnings` : Inhibit all warning messages.
+-   `--no-warnings` : Inhibit all warning messages.
+
+-   `--cs-global-alias` : Prepend `global::` to all user generated csharp classes and structs.
+
+-   `--json-nested-bytes` : Allow a nested_flatbuffer field to be parsed as a
+    vector of bytes in JSON, which is unsafe unless checked by a verifier
+    afterwards.
 
 NOTE: short-form options for generators are deprecated, use the long form
 whenever possible.

docs/source/CppUsage.md

@@ -56,7 +56,7 @@ For example, here is how you would read a FlatBuffer binary file in C++:
 First, include the library and generated code. Then read the file into
 a `char *` array, which you pass to `GetMonster()`.
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     #include "flatbuffers/flatbuffers.h"
     #include "monster_test_generate.h"
     #include <iostream> // C++ header file for printing
@@ -73,18 +73,18 @@ a `char *` array, which you pass to `GetMonster()`.
     infile.close();
 
     auto monster = GetMonster(data);
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 `monster` is of type `Monster *`, and points to somewhere *inside* your
-buffer (root object pointers are not the same as `buffer_pointer` !).
+buffer (root object pointers are not the same as `buffer_pointer` \!).
 If you look in your generated header, you'll see it has
 convenient accessors for all fields, e.g. `hp()`, `mana()`, etc:
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
-    std::cout << "hp : " << monster->hp() << std::endl;            // `80`
+    std::cout << "hp : " << monster->hp() << std::endl;              // '80'
-    std::cout << "mana : " << monster->mana() << std::endl;        // default value of `150`
+    std::cout << "mana : " << monster->mana() << std::endl;          // default value of '150'
-    std::cout << "name : " << monster->name()->c_str() << std::endl;        // "MyMonster"
+    std::cout << "name : " << monster->name()->c_str() << std::endl; // "MyMonster"
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 *Note: That we never stored a `mana` value, so it will return the default.*
 
@@ -96,7 +96,7 @@ The following attributes are supported:
     Specifically, `CreateXxxDirect` functions and `Pack` functions for object
     based API (see below) will use `CreateSharedString` to create strings.
 
-## Object based API.  {#flatbuffers_cpp_object_based_api}
+## Object based API  {#flatbuffers_cpp_object_based_api}
 
 FlatBuffers is all about memory efficiency, which is why its base API is written
 around using as little as possible of it. This does make the API clumsier
@@ -109,7 +109,7 @@ construction, access and mutation.
 
 To use:
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     // Autogenerated class from table Monster.
     MonsterT monsterobj;
 
@@ -123,7 +123,7 @@ To use:
     // Serialize into new flatbuffer.
     FlatBufferBuilder fbb;
     fbb.Finish(Monster::Pack(fbb, &monsterobj));
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 The following attributes are specific to the object-based API code generation:
 
@@ -144,19 +144,19 @@ The following attributes are specific to the object-based API code generation:
     This can be  used to provide allocation from a pool for example, for faster
     unpacking when using the object-based API.
 
-    Minimal Example:
+Minimal Example:
 
-    schema:
+schema:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     table mytable(native_custom_alloc:"custom_allocator") {
       ...
     }
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-    with custom_allocator defined before `flatbuffers.h` is included, as:
+with `custom_allocator` defined before `flatbuffers.h` is included, as:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     template <typename T> struct custom_allocator : public std::allocator<T> {
 
       typedef T *pointer;
@@ -175,34 +175,35 @@ The following attributes are specific to the object-based API code generation:
       }
 
       custom_allocator() throw() {}
+
       template <class U>
       custom_allocator(const custom_allocator<U>&) throw() {}
     };
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 -   `native_type("type")` (on a struct): In some cases, a more optimal C++ data
-    type exists for a given struct.  For example, the following schema:
+type exists for a given struct.  For example, the following schema:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     struct Vec2 {
       x: float;
       y: float;
     }
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-    generates the following Object-Based API class:
+generates the following Object-Based API class:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     struct Vec2T : flatbuffers::NativeTable {
       float x;
       float y;
     };
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-    However, it can be useful to instead use a user-defined C++ type since it
+However, it can be useful to instead use a user-defined C++ type since it
-    can provide more functionality, eg.
+can provide more functionality, eg.
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     struct vector2 {
       float x = 0, y = 0;
       vector2 operator+(vector2 rhs) const { ... }
@@ -210,22 +211,22 @@ The following attributes are specific to the object-based API code generation:
       float length() const { ... }
       // etc.
     };
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-    The `native_type` attribute will replace the usage of the generated class
+The `native_type` attribute will replace the usage of the generated class
-    with the given type.  So, continuing with the example, the generated
+with the given type.  So, continuing with the example, the generated
-    code would use `vector2` in place of `Vec2T` for all generated code of
+code would use `vector2` in place of `Vec2T` for all generated code of
-    the Object-Based API.
+the Object-Based API.
 
-    However, because the `native_type` is unknown to flatbuffers, the user must
+However, because the `native_type` is unknown to flatbuffers, the user must
-    provide the following functions to aide in the serialization process:
+provide the following functions to aide in the serialization process:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     namespace flatbuffers {
       Vec2 Pack(const vector2& obj);
       vector2 UnPack(const Vec2& obj);
     }
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 -   `native_type_pack_name("name")` (on a struct when `native_type` is
     specified, too): when you want to use the same `native_type` multiple times
@@ -235,12 +236,12 @@ The following attributes are specific to the object-based API code generation:
     specify `native_type_pack_name("Vec2")` in the above example you now need to
     implement these serialization functions instead:
 
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     namespace flatbuffers {
       Vec2 PackVec2(const vector2& obj);
       vector2 UnPackVec2(const Vec2& obj);
     }
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 Finally, the following top-level attributes:
 
@@ -253,7 +254,7 @@ Finally, the following top-level attributes:
 -   `force_align`: this attribute may not be respected in the object API,
     depending on the aligned of the allocator used with `new`.
 
-# External references.
+# External references
 
 An additional feature of the object API is the ability to allow you to load
 multiple independent FlatBuffers, and have them refer to eachothers objects
@@ -272,7 +273,7 @@ same string (or hash).
 When you call `UnPack` (or `Create`), you'll need a function that maps from
 hash to the object (see `resolver_function_t` for details).
 
-# Using different pointer types.
+# Using different pointer types
 
 By default the object tree is built out of `std::unique_ptr`, but you can
 influence this either globally (using the `--cpp-ptr-type` argument to
@@ -283,13 +284,13 @@ you, so you'll have to manage their lifecycles manually.  To reference the
 pointer type specified by the `--cpp-ptr-type` argument to `flatc` from a
 flatbuffer field set the `cpp_ptr_type` attribute to `default_ptr_type`.
 
-# Using different string type.
+# Using different string type
 
 By default the object tree is built out of `std::string`, but you can
 influence this either globally (using the `--cpp-str-type` argument to
 `flatc`) or per field using the `cpp_str_type` attribute.
 
-The type must support T::c_str(), T::length() and T::empty() as member functions.
+The type must support `T::c_str()`, `T::length()` and `T::empty()` as member functions.
 
 Further, the type must be constructible from std::string, as by default a
 std::string instance is constructed and then used to initialize the custom
@@ -298,7 +299,7 @@ custom string types; the `--cpp-str-flex-ctor` argument to `flatc` or the
 per field attribute `cpp_str_flex_ctor` can be used to change this behavior,
 so that the custom string type is constructed by passing the pointer and
 length of the FlatBuffers String. The custom string class will require a
-constructor in the following format: custom_str_class(const char *, size_t).
+constructor in the following format: `custom_str_class(const char *, size_t)`.
 Please note that the character array is not guaranteed to be NULL terminated,
 you should always use the provided size to determine end of string.
 
@@ -309,7 +310,7 @@ read and write data even if you don't know the exact format of a buffer, and
 even allows you to change sizes of strings and vectors in-place.
 
 The way this works is very elegant; there is actually a FlatBuffer schema that
-describes schemas (!) which you can find in `reflection/reflection.fbs`.
+describes schemas (\!) which you can find in `reflection/reflection.fbs`.
 The compiler, `flatc`, can write out any schemas it has just parsed as a binary
 FlatBuffer, corresponding to this meta-schema.
 
@@ -418,9 +419,9 @@ is accessed, all reads will end up inside the buffer.
 Each root type will have a verification function generated for it,
 e.g. for `Monster`, you can call:
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
 	bool ok = VerifyMonsterBuffer(Verifier(buf, len));
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 if `ok` is true, the buffer is safe to read.
 
@@ -486,15 +487,15 @@ Load text (either a schema or json) into an in-memory buffer (there is a
 convenient `LoadFile()` utility function in `flatbuffers/util.h` if you
 wish). Construct a parser:
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     flatbuffers::Parser parser;
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 Now you can parse any number of text files in sequence:
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
+```cpp
     parser.Parse(text_file.c_str());
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
 This works similarly to how the command-line compiler works: a sequence
 of files parsed by the same `Parser` object allow later files to
@@ -526,7 +527,7 @@ Creating a FlatBuffer is not thread safe. All state related to building
 a FlatBuffer is contained in a FlatBufferBuilder instance, and no memory
 outside of it is touched. To make this thread safe, either do not
 share instances of FlatBufferBuilder between threads (recommended), or
-manually wrap it in synchronisation primites. There's no automatic way to
+manually wrap it in synchronisation primitives. There's no automatic way to
 accomplish this, by design, as we feel multithreaded construction
 of a single buffer will be rare, and synchronisation overhead would be costly.
 

docs/source/CsharpUsage.md

@@ -180,7 +180,8 @@ To use:
 An additional feature of the object API is the ability to allow you to
 serialize & deserialize a JSON text.
 To use Json Serialization, add `--cs-gen-json-serializer` option to `flatc` and
-add `Newtonsoft.Json` nuget package to csproj.
+add `Newtonsoft.Json` nuget package to csproj. This requires explicitly setting
+the `--gen-object-api` option as well.
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cs}
     // Deserialize MonsterT from json
@@ -192,7 +193,7 @@ add `Newtonsoft.Json` nuget package to csproj.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 * Limitation
-  * `hash` attribute currentry not supported.
+  * `hash` attribute currently not supported.
 * NuGet package Dependency
   * [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json)
 

docs/source/DartUsage.md

@@ -105,4 +105,27 @@ Please see the C++ documentation for more on text parsing (note that this is
 not currently an option in Flutter - follow [this issue](https://github.com/flutter/flutter/issues/7053)
 for the latest).
 
-<br>
+## Object based API
+
+FlatBuffers is all about memory efficiency, which is why its base API is written
+around using as little as possible of it. This does make the API clumsier
+(requiring pre-order construction of all data, and making mutation harder).
+
+For times when efficiency is less important a more convenient object based API
+can be used (through `--gen-object-api`) that is able to unpack & pack a FlatBuffer
+into objects and lists, allowing for convenient construction, access and mutation.
+
+To use:
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.dart}
+    // Deserialize from buffer into object.
+    MonsterT monster = Monster(flatbuffer).unpack();
+
+    // Update object directly like a Dart class instance.
+    print(monster.Name);
+    monster.Name = "Bob";  // Change the name.
+
+    // Serialize into new flatbuffer.
+    final fbb = Builder();
+    fbb.Finish(monster.pack(fbb));
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

docs/source/GoUsage.md

@@ -52,10 +52,10 @@ a `[]byte`, which you pass to the `GetRootAsMonster` function:
        example "MyGame/Example"
        flatbuffers "github.com/google/flatbuffers/go"
 
-       io/ioutil
+       "os"
     )
 
-    buf, err := ioutil.ReadFile("monster.dat")
+    buf, err := os.ReadFile("monster.dat")
     // handle err
     monster := example.GetRootAsMonster(buf, 0)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

docs/source/IntermediateRepresentation.md

@@ -0,0 +1,35 @@
+# Flatbuffers Intermediate Representation {#intermediate_representation}
+
+We use [reflection.fbs](https://github.com/google/flatbuffers/blob/master/reflection/reflection.fbs)
+as our intermediate representation. `flatc` parses `.fbs` files, checks them for
+errors and stores the resulting data in this IR, outputting `.bfbs` files.
+Since this IR is a Flatbuffer, you can load and use it at runtime for runtime
+reflection purposes.
+
+There are some quirks: 
+- Tables and Structs are serialized as `Object`s.
+- Unions and Enums are serialized as `Enum`s.
+- It is the responsibility of the code generator to check the `advanced_features`
+  field of `Schema`. These mark the presence of new, backwards incompatible,
+  schema features. Code generators must error if generating a schema with
+  unrecognized advanced features.
+- Filenames are relative to a "project root" denoted by "//" in the path. This
+  may be specified in flatc with `--bfbs-filenames=$PROJECT_ROOT`, or it will be
+  inferred to be the directory containing the first provided schema file.
+
+
+## Invocation 
+You can invoke it like so
+```{.sh}
+flatc -b --schema ${your_fbs_files}
+```
+This generates `.bfbs` (binary flatbuffer schema) files.
+
+Some information is not included by default. See the `--bfbs-filenames` and
+`--bfbs-comments` flags. These may be necessary for code-generators, so they can
+add documentation and maybe name generated files (depending on the generator).
+
+
+TODO(cneo): Flags to output bfbs as flexbuffers or json.
+
+TODO(cneo): Tutorial for building a flatc plugin.

docs/source/Internals.md

@@ -85,7 +85,7 @@ referred to by offset.
 
 They start with an `soffset_t` to a vtable. This is a signed version of
 `uoffset_t`, since vtables may be stored anywhere relative to the object.
-This offset is substracted (not added) from the object start to arrive at
+This offset is subtracted (not added) from the object start to arrive at
 the vtable start. This offset is followed by all the
 fields as aligned scalars (or offsets). Unlike structs, not all fields
 need to be present. There is no set order and layout. A table may contain
@@ -435,7 +435,7 @@ The keys vector is a typed vector of keys. Both the keys and corresponding
 values *have* to be stored in sorted order (as determined by `strcmp`), such
 that lookups can be made using binary search.
 
-The reason the key vector is a seperate structure from the value vector is
+The reason the key vector is a separate structure from the value vector is
 such that it can be shared between multiple value vectors, and also to
 allow it to be treated as its own individual vector in code.
 

docs/source/JavaScriptUsage.md

@@ -23,7 +23,7 @@ https://www.npmjs.com/package/flatbuffers. To use it from sources:
 1. In your project, install it as a normal dependency, using the flatbuffers
 folder as the source.
 
-## Using the FlatBuffers JavaScript libary
+## Using the FlatBuffers JavaScript library
 
 *Note: See [Tutorial](@ref flatbuffers_guide_tutorial) for a more in-depth
 example of how to use FlatBuffers.*

docs/source/LobsterUsage.md

@@ -71,7 +71,7 @@ Using FlatBuffers in Lobster should be relatively fast, as the implementation
 makes use of native support for writing binary values, and access of vtables.
 Both generated code and the runtime library are therefore small and fast.
 
-Actual speed will depend on wether you use Lobster as bytecode VM or compiled to
+Actual speed will depend on whether you use Lobster as bytecode VM or compiled to
 C++.
 
 ## Text Parsing

docs/source/RustUsage.md

@@ -36,7 +36,7 @@ The test code itself is located in
 [integration_test.rs](https://github.com/google/flatbuffers/blob/master/tests/rust_usage_test/tests/integration_test.rs)
 
 This test file requires `flatc` to be present. To review how to build the project,
-please read the [Building](@ref flatbuffers_guide_building) documenation.
+please read the [Building](@ref flatbuffers_guide_building) documentation.
 
 To run the tests, execute `RustTest.sh` from the `flatbuffers/tests` directory.
 For example, on [Linux](https://en.wikipedia.org/wiki/Linux), you would simply
@@ -58,7 +58,7 @@ and the generated code to read or write FlatBuffers.
 
 For example, here is how you would read a FlatBuffer binary file in Rust:
 First, include the library and generated code. Then read the file into
-a `u8` vector, which you pass, as a byte slice, to `get_root_as_monster()`.
+a `u8` vector, which you pass, as a byte slice, to `root_as_monster()`.
 
 This full example program is available in the Rust test suite:
 [monster_example.rs](https://github.com/google/flatbuffers/blob/master/tests/rust_usage_test/bin/monster_example.rs)
@@ -80,7 +80,7 @@ It can be run by `cd`ing to the `rust_usage_test` directory and executing: `carg
         let mut buf = Vec::new();
         f.read_to_end(&mut buf).expect("file reading failed");
 
-        let monster = my_game::example::get_root_as_monster(&buf[..]);
+        let monster = my_game::example::root_as_monster(&buf[..]);
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 `monster` is of type `Monster`, and points to somewhere *inside* your
@@ -108,7 +108,7 @@ the layout of things is generally not known to the user.
 For structs, layout is deterministic and guaranteed to be the same
 across platforms (scalars are aligned to their
 own size, and structs themselves to their largest member), and you
-are allowed to access this memory directly by using `safe_slice` and
+are allowed to access this memory directly by using `safe_slice`
 on the reference to a struct, or even an array of structs.
 
 To compute offsets to sub-elements of a struct, make sure they
@@ -118,9 +118,10 @@ handy for use of arrays of structs with calls like `glVertexAttribPointer`
 in OpenGL or similar APIs.
 
 It is important to note is that structs are still little endian on all
-machines, so only use tricks like this if you can guarantee you're not
+machines, so the functions to enable tricks like this are only exposed on little
-shipping on a big endian machine (using an `#[cfg(target_endian = "little")]`
+endian machines. If you also ship on big endian machines, using an
-attribute would be wise).
+`#[cfg(target_endian = "little")]` attribute would be wise or your code will not
+compile.
 
 The special function `safe_slice` is implemented on Vector objects that are
 represented in memory the same way as they are represented on the wire. This
@@ -134,22 +135,22 @@ of `safe_slice`.
 
 ## Access of untrusted buffers
 
+The safe Rust functions to interpret a slice as a table (`root`,
+`size_prefixed_root`, `root_with_opts`, and `size_prefixed_root_with_opts`)
+verify the data first. This has some performance cost, but is intended to be
+safe for use on flatbuffers from untrusted sources. There are corresponding
+`unsafe` versions with names ending in `_unchecked` which skip this
+verification, and may access arbitrary memory.
+
 The generated accessor functions access fields over offsets, which is
-very quick. These offsets are used to index into Rust slices, so they are
+very quick. The current implementation uses these to access memory without any
-bounds-checked by the Rust runtime. However, our Rust implementation may
+further bounds checking. All of the safe Rust APIs ensure the verifier is run
-change: we may convert access functions to use direct pointer dereferencing, to
+over these flatbuffers before accessing them.
-improve lookup speed. As a result, users should not rely on the aforementioned
-bounds-checking behavior.
 
 When you're processing large amounts of data from a source you know (e.g.
-your own generated data on disk), this is acceptable, but when reading
+your own generated data on disk), the `_unchecked` versions are acceptable, but
-data from the network that can potentially have been modified by an
+when reading data from the network that can potentially have been modified by an
-attacker, this is undesirable.
+attacker, it is desirable to use the safe versions which use the verifier.
-
-The C++ port provides a buffer verifier. At this time, Rust does not. Rust may
-provide a verifier in a future version. In the meantime, Rust users can access
-the buffer verifier generated by the C++ port through a foreign function
-interface (FFI).
 
 ## Threading
 
@@ -165,6 +166,17 @@ manually wrap it in synchronisation primitives. There's no automatic way to
 accomplish this, by design, as we feel multithreaded construction
 of a single buffer will be rare, and synchronisation overhead would be costly.
 
+Unlike most other languages, in Rust these properties are exposed to and
+enforced by the type system. `flatbuffers::Table` and the generated table types
+are `Send + Sync`, indicating they may be freely shared across threads and data
+may be accessed from any thread which receives a const (aka shared) reference.
+There are no functions which require a mutable (aka exclusive) reference, which
+means all the available functions may be called like this.
+`flatbuffers::FlatBufferBuilder` is also `Send + Sync`, but all of the mutating
+functions require a mutable (aka exclusive) reference which can only be created
+when no other references to the `FlatBufferBuilder` exist, and may not be copied
+within the same thread, let alone to a second thread.
+
 ## Useful tools created by others
 
 * [flatc-rust](https://github.com/frol/flatc-rust) - FlatBuffers compiler

docs/source/Schemas.md

@@ -239,9 +239,9 @@ included files (those you still generate separately).
 
 ### Root type
 
-This declares what you consider to be the root table (or struct) of the
+This declares what you consider to be the root table of the serialized
-serialized data. This is particularly important for parsing JSON data,
+data. This is particularly important for parsing JSON data, which doesn't
-which doesn't include object type information.
+include object type information.
 
 ### File identification and extension
 
@@ -490,7 +490,7 @@ as much as possible such that you can use tables where you might be
 tempted to use a dictionary.
 
 Similarly, strings as values should only be used when they are
-truely open-ended. If you can, always use an enum instead.
+truly open-ended. If you can, always use an enum instead.
 
 FlatBuffers doesn't have inheritance, so the way to represent a set
 of related data structures is a union. Unions do have a cost however,
@@ -592,7 +592,7 @@ we keep the sequence of ids.
 
     table { b:int; }
 
-NOT ok. We can only remove a field by deprecation, regardless of wether we use
+NOT ok. We can only remove a field by deprecation, regardless of whether we use
 explicit ids or not.
 
     table { a:uint; b:uint; }
@@ -637,10 +637,14 @@ optional type.
 Some `FlatBufferBuilder` implementations have an option called `force_defaults`
 that circumvents this "not writing defaults" behavior you can then use
 `IsFieldPresent` to query presence.
-
+/
 Another option that works in all languages is to wrap a scalar field in a
 struct. This way it will return null if it is not present. This will be slightly
 less ergonomic but structs don't take up any more space than the scalar they
 represent.
 
    [Interface Definition Language]: https://en.wikipedia.org/wiki/Interface_description_language
+
+## Writing your own code generator.
+
+See [our intermediate representation](@ref intermediate_representation).

docs/source/Support.md

@@ -25,7 +25,7 @@ JSON parsing                   | Yes    | No    | No       | No    | No     | No
 Simple mutation                | Yes    | Yes   | Yes      | Yes   | No     | No    | No  | No     | No  | No      | No      | No     | Yes
 Reflection                     | Yes    | No    | No       | No    | No     | No    | No  | Basic  | No  | No      | No      | No     | No
 Buffer verifier                | Yes    | No    | No       | No    | No     | No    | No  | Yes    | No  | No      | No      | No     | No
-Native Object API              | Yes    | No    | Yes      | Yes   | Yes    | Yes   | Yes | No     | No  | No      | No      | No     | No
+Native Object API              | Yes    | No    | Yes      | Yes   | Yes    | Yes   | Yes | No     | No  | Yes     | No      | No     | No
 Optional Scalars               | Yes    | Yes   | Yes      | No    | No     | Yes   | Yes | Yes    | No  | No      | Yes     | Yes    | Yes
 Flexbuffers                    | Yes    | Yes   | ?        | ?     | ?      | ?     | ?   | ?      | ?   | ?       | ?       | Yes    | ?
 Testing: basic                 | Yes    | Yes   | Yes      | Yes   | Yes    | Yes   | Yes | Yes    | ?   | Yes     | Yes     | Yes    | Yes

docs/source/Tutorial.md

@@ -231,7 +231,7 @@ fields, such as `mana:short = 150`. If unspecified, scalar fields (like `int`,
 `uint`, or `float`) will be given a default of `0` while strings and tables will
 be given a default of `null`. Another thing to note is the line `friendly:bool =
 false (deprecated);`. Since you cannot delete fields from a `table` (to support
-backwards compatability), you can set fields as `deprecated`, which will prevent
+backwards compatibility), you can set fields as `deprecated`, which will prevent
 the generation of accessors for this field in the generated code. Be careful
 when using `deprecated`, however, as it may break legacy code that used this
 accessor.
@@ -1090,7 +1090,7 @@ traversal. This is generally easy to do on any tree structures.
 </div>
 <div class="language-lua">
 ~~~{.py}
-    -- Serialize a name for our mosnter, called 'orc'
+    -- Serialize a name for our monster, called 'orc'
     local name = builder:CreateString("Orc")
 
     -- Create a `vector` representing the inventory of the Orc. Each number
@@ -1820,7 +1820,7 @@ Here is a repetition of these lines, to help highlight them more clearly:
 <div class="language-cpp">
   ~~~{.cpp}
     monster_builder.add_equipped_type(Equipment_Weapon); // Union type
-    monster_builder.add_equipped(axe); // Union data
+    monster_builder.add_equipped(axe.Union()); // Union data
   ~~~
 </div>
 <div class="language-java">
@@ -2970,7 +2970,7 @@ We can access the type to dynamically cast the data as needed (since the
 
 <div class="language-cpp">
 ~~~{.cpp}
-  auto union_type = monster.equipped_type();
+  auto union_type = monster->equipped_type();
 
   if (union_type == Equipment_Weapon) {
     auto weapon = static_cast<const Weapon*>(monster->equipped()); // Requires `static_cast`
@@ -3392,6 +3392,125 @@ decimals in the JSON document.*
 
 ## Advanced Features for Each Language
 
+### Vector of Unions
+
+Some languages support storing unions directly in a vector.
+
+~~~
+// File found in tests/union_vector/union_vector.fbs
+namespace Example.VectorOfUnions;
+
+// Demonstrates the ability to have vectors of unions, and also to
+// store structs and strings in unions.
+
+table Attacker {
+  sword_attack_damage: int;
+}
+
+struct Rapunzel {
+  hair_length: int;
+}
+
+struct BookReader {
+  books_read: int;
+}
+
+union Character {
+  MuLan: Attacker,  // Can have name be different from type.
+  Rapunzel,         // Or just both the same, as before.
+  Belle: BookReader,
+  BookFan: BookReader,
+  Other: string,
+  Unused: string
+}
+
+table Movie {
+  main_character: Character;
+  characters: [Character];
+}
+~~~
+
+#### Creating
+
+Analagously to how a union adds two fields to a table a vector of unions creates two different vectors:
+one for the union data and one for the data types.
+
+<div class="language-cpp">
+C++ supports vectors of unions, but it isn't currently documented.
+</div>
+<div class="language-typescript">
+Typescript supports vectors of unions, but it isn't currently documented.
+</div>
+<div class="language-php">
+PHP supports vectors of unions, but it isn't currently documented.
+</div>
+<div class="language-java">
+Java supports vectors of unions, but it isn't currently documented.
+</div>
+<div class="language-csharp">
+~~~{.cs}
+using FlatBuffers;
+using Example.VectorOfUnions;
+
+var fbb = new FlatBufferBuilder(100);
+
+var characterTypes = new[]
+{
+    Character.MuLan,
+    Character.Belle,
+    Character.Other,
+};
+var characterTypesOffset = Movie.CreateCharactersTypeVector(fbb, characterTypes);
+
+var characters = new[]
+{
+    Attacker.CreateAttacker(fbb, 10).Value,
+    BookReader.CreateBookReader(fbb, 20).Value,
+    fbb.CreateSharedString("Chip").Value,
+};
+var charactersOffset = Movie.CreateCharactersVector(fbb, characters);
+
+var movieOffset = Movie.CreateMovie(
+    fbb,
+    Character.Rapunzel,
+    rapunzel,
+    characterTypesOffset,
+    charactersOffset);
+Movie.FinishMovieBuffer(fbb, movieOffset);
+~~~
+</div>
+<div class="language-kotlin">
+Kotlin supports vectors of unions, but it isn't currently documented.
+</div>
+<div class="language-swift">
+Swift supports vectors of unions, but it isn't currently documented.
+</div>
+
+#### Reading
+<div class="language-csharp">
+~~~{.cs}
+var movie = Movie.GetRootAsMovie(fbb.DataBuffer);
+
+for (var i = 0; i <= movie.CharactersLength; i++)
+{
+  if (movie.CharactersType(i) == Character.MuLan)
+  {
+    var mulanSwordDamage = movie.Characters<Attacker>(i).Value.SwordAttackDamage;
+  }
+  else if (movie.CharactersType(i) == Character.Belle)
+  {
+    var belleBooksRead = movie.Characters<BookReader>(i).Value.BooksRead;
+  }
+  else if (movie.CharactersType(i) == Character.Other)
+  {
+    var otherStr = movie.CharactersAsString(i);
+  }
+}
+~~~
+</div>
+
+### Further Reading
+
 Each language has a dedicated `Use in XXX` page in the Programmer's Guide
 to cover the nuances of FlatBuffers in that language.
 

docs/source/TypeScriptUsage.md

@@ -21,12 +21,12 @@ https://www.npmjs.com/package/flatbuffers.
 
 ## Testing the FlatBuffers TypeScript library
 
-To run the tests, use the [TypeScriptTest.sh](https://github.com/google/
+To run the tests, use the [TypeScriptTest.py](https://github.com/google/
-flatbuffers/blob/master/tests/TypeScriptTest.sh) shell script.
+flatbuffers/blob/master/tests/TypeScriptTest.py) Python3 script.
 
 *Note: The TypeScript test file requires [Node.js](https://nodejs.org/en/).*
 
-## Using the FlatBuffers TypeScript libary
+## Using the FlatBuffers TypeScript library
 
 *Note: See [Tutorial](@ref flatbuffers_guide_tutorial) for a more in-depth
 example of how to use FlatBuffers in TypeScript.*

docs/source/WhitePaper.md

@@ -20,7 +20,7 @@ and locality.
 If it would be possible to do serialization with no temporary objects,
 no additional allocation, no copying, and good locality, this could be
 of great value. The reason serialization systems usually don't manage
-this is because it goes counter to forwards/backwards compatability, and
+this is because it goes counter to forwards/backwards compatibility, and
 platform specifics like endianness and alignment.
 
 FlatBuffers is what you get if you try anyway.
@@ -64,7 +64,7 @@ through a *vtable*. Each table comes with a vtable (which may be shared
 between multiple tables with the same layout), and contains information
 where fields for this particular kind of instance of vtable are stored.
 The vtable may also indicate that the field is not present (because this
-FlatBuffer was written with an older version of the software, of simply
+FlatBuffer was written with an older version of the software, or simply
 because the information was not necessary for this instance, or deemed
 deprecated), in which case a default value is returned.
 

docs/source/doxyfile

@@ -768,6 +768,7 @@ INPUT = "FlatBuffers.md" \
         "WhitePaper.md" \
         "FlexBuffers.md" \
         "Internals.md" \
+        "IntermediateRepresentation.md" \
         "Grammar.md" \
         "../../CONTRIBUTING.md" \
         "Tutorial.md" \

docs/source/doxygen_layout.xml

@@ -66,6 +66,8 @@
         title="FlatBuffers white paper"/>
     <tab type="user" url="@ref flatbuffers_internals"
         title="FlatBuffers internals"/>
+    <tab type="user" url="@ref intermediate_representation"
+        title="Intermediate Representation"/>
     <tab type="user" url="@ref flatbuffers_grammar"
         title="Grammar of the schema language"/>
     <tab type="usergroup" url="" title="API Reference">

grpc/README.md

@@ -32,9 +32,8 @@ $bazel test src/compiler/...
 
 ### Linux
 
-1. `ln -s ${GRPC_INSTALL_PATH}/lib/libgrpc++_unsecure.so.6 ${GRPC_INSTALL_PATH}/lib/libgrpc++_unsecure.so.1`
+1. `export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${GRPC_INSTALL_PATH}/lib`
-2. `export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${GRPC_INSTALL_PATH}/lib`
+2. `make test ARGS=-V`
-3. `make test ARGS=-V` 
 
 For Bazel users:
 

grpc/build_grpc.sh

@@ -1,11 +1,11 @@
 #!/bin/bash
 
-grpc_1_36_0_githash=736e3758351ced3cd842bad3ba4e2540f01bbc48
+grpc_1_39_0_githash=58602e20a3f3e48f24a4114c757099b25b947f7b
 
 function build_grpc () {
   git clone https://github.com/grpc/grpc.git google/grpc
   cd google/grpc
-  git checkout ${grpc_1_36_0_githash}
+  git checkout ${grpc_1_39_0_githash}
   git submodule update --init
   # Apply boringssl build patch
   cd third_party/boringssl-with-bazel
@@ -13,11 +13,8 @@ function build_grpc () {
   cd ../..
   mkdir ../grpc_build
   cd ../grpc_build
-  cmake ../grpc -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=`pwd`/../grpc/install
+  cmake ../grpc -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DABSL_ENABLE_INSTALL=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=`pwd`/../grpc/install
   cmake --build . --target install ${JOBS:+-j$JOBS}
-  if [ ! -f ${GRPC_INSTALL_PATH}/lib/libgrpc++_unsecure.so.1 ]; then
-    ln -s ${GRPC_INSTALL_PATH}/lib/libgrpc++_unsecure.so.6 ${GRPC_INSTALL_PATH}/lib/libgrpc++_unsecure.so.1
-  fi
   cd ../..
 }
 

grpc/examples/generate.sh

@@ -1,71 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2021 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -e
-
-current_dir=`pwd`
-
-cd ../..
-
-main_dir=`pwd`
-
-cd ${current_dir}
-
-# Looks for flatc within the root dir & debug
-if [ -e ${main_dir}/flatc ]; then
-  alias fbc='${main_dir}/flatc'
-elif [ -e ${main_dir}/Debug/flatc ]; then
-  alias fbc='${main_dir}/Debug/flatc'
-else
-  echo 'flatc' could not be found. Make sure to build FlatBuffers from the \
-       $rootdir directory.
-  exit 1
-fi
-
-generator="--grpc $current_dir/greeter.fbs"
-
-# Regenerate Go lang code
-cd go
-
-cd greeter
-fbc --go ${generator}
-
-cd ${current_dir}
-
-# Regenerate Python code
-cd python
-
-cd greeter
-
-fbc --python ${generator}
-
-cd ${current_dir}
-
-# Regenerate Swift code
-cd swift
-
-cd Greeter/Sources/Model
-fbc --swift ${generator}
-
-cd ${current_dir}
-
-# Regenerate Typescript code
-cd ts
-
-cd greeter/src
-fbc --ts ${generator}
-
-cd ${current_dir}

grpc/examples/go/greeter/client/main.go

@@ -9,8 +9,10 @@ import (
 	"time"
 
 	flatbuffers "github.com/google/flatbuffers/go"
-	models "github.com/google/flatbuffers/grpc/examples/go/greeter/models"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+
+	models "github.com/google/flatbuffers/grpc/examples/go/greeter/models"
 )
 
 var (
@@ -63,7 +65,9 @@ func printSayManyHello(client models.GreeterClient, name string) {
 
 func main() {
 	flag.Parse()
-	conn, err := grpc.Dial(fmt.Sprintf("localhost:%d", 3000), grpc.WithInsecure(), grpc.WithCodec(flatbuffers.FlatbuffersCodec{}))
+	conn, err := grpc.Dial(fmt.Sprintf("localhost:%d", 3000),
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultCallOptions(grpc.ForceCodec(flatbuffers.FlatbuffersCodec{})))
 	if err != nil {
 		log.Fatalf("fail to dial: %v", err)
 	}

grpc/examples/go/greeter/server/go.mod

@@ -7,5 +7,5 @@ replace github.com/google/flatbuffers/grpc/examples/go/greeter/models v0.0.0 =>
 require (
 	github.com/google/flatbuffers v1.12.0
 	github.com/google/flatbuffers/grpc/examples/go/greeter/models v0.0.0
-	google.golang.org/grpc v1.35.0
+	google.golang.org/grpc v1.39.0-dev
 )

grpc/examples/go/greeter/server/main.go

@@ -9,7 +9,6 @@ import (
 	flatbuffers "github.com/google/flatbuffers/go"
 	models "github.com/google/flatbuffers/grpc/examples/go/greeter/models"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/encoding"
 )
 
 var (
@@ -68,8 +67,8 @@ func main() {
 	if err != nil {
 		log.Fatalf("failed to listen: %v", err)
 	}
-	grpcServer := grpc.NewServer()
+	codec := &flatbuffers.FlatbuffersCodec{}
-	encoding.RegisterCodec(flatbuffers.FlatbuffersCodec{})
+	grpcServer := grpc.NewServer(grpc.ForceServerCodec(codec))
 	models.RegisterGreeterServer(grpcServer, newServer())
 	if err := grpcServer.Serve(lis); err != nil {
 		fmt.Print(err)