Fixup packages

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1330

This has been tripping folks up a bit. Add a blurb to the package README to call it out.

Reviewed By: cortinico

Differential Revision: D47370333

fbshipit-source-id: f07b2e4d0e23865e3554c7aaf6ec77dff71a7423

.buckconfig

@@ -1,2 +0,0 @@
-[cxx]
-  gtest_dep = //lib/gtest:gtest

.clang-format

@@ -0,0 +1,168 @@
+Language: Cpp
+AccessModifierOffset: -2
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Left
+AlignOperands: false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBinaryOperators: false
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakInheritanceList: BeforeColon
+BreakStringLiterals: true
+ColumnLimit: 80
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+FixNamespaceComments: true
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth: 2
+IndentWrappedFunctionNames: false
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+PenaltyReturnTypeOnItsOwnLine: 2000
+PointerAlignment: Left
+ReflowComments: true
+SortIncludes: false
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: true
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+Standard: Cpp11
+UseTab: Never
+---
+Language: ObjC
+AccessModifierOffset: -1
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveMacros: false
+AlignConsecutiveAssignments: false
+AlignConsecutiveBitFields: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Left
+AlignOperands: DontAlign
+AlignTrailingComments: false
+AllowAllArgumentsOnNextLine: true
+AllowAllConstructorInitializersOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortEnumsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortLambdasOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit: 80
+CommentPragmas: '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DeriveLineEnding: true
+DerivePointerAlignment: false
+DisableFormat: false
+FixNamespaceComments: true
+ForEachMacros:
+  - FOR_EACH
+  - FOR_EACH_R
+  - FOR_EACH_RANGE
+IncludeBlocks: Preserve
+IncludeCategories:
+  - Regex:           '^<.*\.h(pp)?>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IndentCaseLabels: true
+IndentCaseBlocks: false
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentExternBlock: AfterExternBlock
+IndentWidth: 2
+IndentWrappedFunctionNames: false
+InsertTrailingCommas: None
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd: ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 2
+ObjCBreakBeforeNestedBlockParam: true
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: false
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Left
+ReflowComments: true
+SortIncludes: true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+SpaceBeforeSquareBrackets: false
+Standard: Latest
+TabWidth: 8
+UseCRLF: false
+UseTab: Never
+...

.clang-format-ignore

@@ -0,0 +1 @@
+^lib/.*

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,17 @@
+# Report
+
+- [ ] I have searched [existing issues](https://github.com/facebook/yoga/issues) and this is not a duplicate
+
+# Issues and Steps to Reproduce
+***Replaces this with steps to repro your issue.***
+
+# Expected Behavior
+***Describe what you expected would happen.***
+
+# Actual Behavior
+***Describe what actually happened.***
+
+# Link to Code
+***If you have some code that maintainers can clone/test for themselves, bugs can be resolved much faster. Please paste a link here.***
+
+***When applicable, use this [fiddle](https://jsfiddle.net/emilsjolander/jckmwztt/) to post a web repro.***

.github/actions/black/action.yml

@@ -0,0 +1,25 @@
+name: Black Formatter
+inputs:
+  directory:
+    description: Directory to Lint
+    required: true
+  version:
+    description: pypi version of "black" to use
+    required: false
+    default: 22.3.0
+
+runs:
+  using: "composite"
+  steps:
+    - name: Ensure supported Python selected
+      uses: actions/setup-python@v4
+      with:
+        python-version: '>=3.6.2'
+
+    - name: pip install
+      shell: bash
+      run: pip install black==${{ inputs.version }}
+
+    - name: black
+      shell: bash
+      run: black --check ${{ inputs.directory }}

.github/actions/clang-format/action.yml

@@ -0,0 +1,23 @@
+name: Clang Format
+inputs:
+  directory:
+    description: Directory to Lint
+    required: true
+  version:
+    description: LLVM version to use # Should be kept roughly in sync with arcanist
+    required: false
+    default: 12
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install
+      shell: bash
+      run: sudo apt-get install -y clang-format-${{ inputs.version }}
+
+    - name: clang-format
+      working-directory: ${{ inputs.directory }}
+      shell: bash
+      env:
+        BASHOPTS: extglob:nullglob
+      run: clang-format-${{ inputs.version }} --dry-run --Werror **/*.{h,hh,hpp,c,cpp,cc,m,mm}

.github/actions/install-emsdk/action.yml

@@ -0,0 +1,23 @@
+name: Install emsdk (including emcc)
+inputs:
+  version:
+    description: EMCC Version to install
+    required: false
+    default: 3.1.28
+
+runs:
+  using: "composite"
+  steps:
+    - name: Clone emsdk repo
+      working-directory: ${{ runner.temp }}
+      shell: bash
+      run: git clone https://github.com/emscripten-core/emsdk.git
+
+    - name: emdsk install
+      working-directory: ${{ runner.temp }}/emsdk
+      shell: bash
+      run: |
+        ./emsdk install ${{ inputs.version }}
+        ./emsdk activate ${{ inputs.version }}
+        echo $RUNNER_TEMP/emsdk >> $GITHUB_PATH
+        echo $RUNNER_TEMP/emsdk/upstream/emscripten >> $GITHUB_PATH

.github/actions/install-ninja/action.yml

@@ -0,0 +1,14 @@
+name: Install Ninja
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install ninja (Linux)
+      if: ${{ runner.os == 'Linux' }}
+      shell: bash
+      run: sudo apt-get install -y ninja-build
+
+    - name: Install ninja (Windows)
+      if: ${{ runner.os == 'Windows' }}
+      shell: powershell
+      run: choco install ninja

.github/actions/setup-android/action.yml

@@ -0,0 +1,12 @@
+name: Setup Android environment
+
+runs:
+  using: "composite"
+  steps:
+    - name: Select Java Version
+      uses: actions/setup-java@v2
+      with:
+        distribution: zulu
+        java-version: 17
+    - name: Configure Gradle Caches
+      uses: gradle/gradle-build-action@v2

.github/actions/setup-apple/action.yml

@@ -0,0 +1,9 @@
+name: Setup Apple envirionment
+
+runs:
+  using: "composite"
+  steps:
+    # TODO: This and Ruby should be versioned
+    - name: Install Cocoapods
+      shell: bash
+      run: sudo gem install cocoapods

.github/actions/setup-cpp/action.yml

@@ -0,0 +1,12 @@
+name: Setup C++ envirionment
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install Ninja
+      if: ${{ runner.os != 'Windows' }}
+      uses: ./.github/actions/install-ninja
+
+    - name: Setup VS Developer Command Prompt
+      if: ${{ runner.os == 'Windows' }}
+      uses: ilammy/msvc-dev-cmd@v1

.github/actions/setup-js/action.yml

@@ -0,0 +1,20 @@
+name: Setup JavaScript envirionment
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install Node
+      uses: actions/setup-node@v1
+      with:
+        node-version: 18.x
+
+    - name: Install emsdk
+      uses: ./.github/actions/install-emsdk
+
+    - name: Install Ninja
+      uses: ./.github/actions/install-ninja
+
+    - name: yarn install
+      shell: bash
+      run: yarn install --frozen-lockfile
+      working-directory: javascript

.github/actions/setup-website/action.yml

@@ -0,0 +1,18 @@
+name: Setup Website envirionment
+
+runs:
+  using: "composite"
+  steps:
+    # TODO: Update to latest when website is moved to the workspace version of
+    # yoga-layout
+    - name: Install Node
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12.x
+
+    # TODO: the website should be in a yarn workspace with the library, but the
+    # current version of gatsby is incompatible with hoisting.
+    - name: yarn install
+      shell: bash
+      run: yarn install --frozen-lockfile
+      working-directory: website

.github/workflows/publish-android-release.yml

@@ -0,0 +1,38 @@
+name: Publish Android Release
+
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish to Maven Central
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-android
+
+      - name: Publish to Maven Local
+        run: ./gradlew publishToMavenLocal
+        env:
+          ORG_GRADLE_PROJECT_SIGNING_KEY: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_SIGNING_PWD: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_PWD }}
+
+      - name: Upload Build Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: 'snapshot-artifacts'
+          path: '~/.m2/repository/'
+
+      - name: Publish to the Maven Central
+        run: ./gradlew publishToSonatype closeAndReleaseSonatypeStagingRepository
+        env:
+          ORG_GRADLE_PROJECT_SONATYPE_USERNAME: ${{ secrets.ORG_GRADLE_PROJECT_SONATYPE_USERNAME }}
+          ORG_GRADLE_PROJECT_SONATYPE_PASSWORD: ${{ secrets.ORG_GRADLE_PROJECT_SONATYPE_PASSWORD }}
+          ORG_GRADLE_PROJECT_SIGNING_KEY: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_SIGNING_PWD: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_PWD }}

.github/workflows/publish-android-snashot.yml

@@ -0,0 +1,36 @@
+name: Publish Android Snapshot
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish Snapshot
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-android
+
+      - name: Publish to Maven Local
+        run: ./gradlew publishToMavenLocal
+        env:
+          ORG_GRADLE_PROJECT_USE_SNAPSHOT: true
+
+      - name: Upload Build Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: 'snapshot-artifacts'
+          path: '~/.m2/repository/'
+
+      - name: Publish to the Snapshot Repository
+        run: ./gradlew publishToSonatype
+        env:
+          ORG_GRADLE_PROJECT_SONATYPE_USERNAME: ${{ secrets.ORG_GRADLE_PROJECT_SONATYPE_USERNAME }}
+          ORG_GRADLE_PROJECT_SONATYPE_PASSWORD: ${{ secrets.ORG_GRADLE_PROJECT_SONATYPE_PASSWORD }}
+          ORG_GRADLE_PROJECT_USE_SNAPSHOT: true

.github/workflows/publish-cocoapods-release.yml

@@ -0,0 +1,29 @@
+name: Publish CocoaPods Release
+
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish to CocoaPods trunk
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-apple
+
+      - name: Publish Yoga
+        run: pod trunk push Yoga.podspec
+        env:
+          COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}
+
+      - name: Publish YogaKit
+        # Must run with --synchronous since YogaKit may depend on the just published version of Yoga
+        run: pod trunk push YogaKit.podspec --synchronous
+        env:
+          COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}

.github/workflows/publish-npm-release.yml

@@ -0,0 +1,25 @@
+name: Publish NPM Release
+
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish to npmjs registry
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-js
+
+      - name: Store auth token in config file
+        run: echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}" > ~/.npmrc
+
+      - name: yarn publish
+        run: yarn publish
+        working-directory: javascript

.github/workflows/publish-website.yml

@@ -0,0 +1,32 @@
+name: Website
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish to GitHub Pages
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-website
+
+      - name: yarn build
+        run: yarn build
+        working-directory: website
+
+      - uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_branch: gh-pages
+          publish_dir: website/public
+          cname: yogalayout.com
+          keep_files: true
+          user_name: 'Yoga-bot'
+          user_email: 'yogabot@fb.com'

.github/workflows/validate-android.yml

@@ -0,0 +1,26 @@
+name: Android
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build [${{ matrix.os }}][${{ matrix.mode }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        mode: [Debug, Release]
+        os: [ubuntu-latest, windows-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-android
+
+      - name: Build
+        run: ./gradlew assemble${{ matrix.mode }} --stacktrace

.github/workflows/validate-apple.yml

@@ -0,0 +1,55 @@
+name: Apple
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  lint-pods:
+    name: Lint pod
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-apple
+
+      - name: pod lib lint
+        run: pod lib lint --verbose --include-podspecs=**/*.podspec
+
+  build-sample:
+    name: Build sample [${{ matrix.mode }}]
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        mode: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-apple
+
+      - name: pod install
+        run: pod install
+        working-directory: ./YogaKit/YogaKitSample
+
+      - name: xcodebuild YogaKitSample.xcworkspace
+        run: xcodebuild -workspace YogaKitSample.xcworkspace -scheme YogaKitSample
+        working-directory: ./YogaKit/YogaKitSample
+
+  clang-format:
+    name: Format
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: clang-format
+        uses: ./.github/actions/clang-format
+        with:
+          directory: ./YogaKit

.github/workflows/validate-cpp.yml

@@ -0,0 +1,64 @@
+name: C++
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  GTEST_COLOR: 1
+
+jobs:
+  test:
+    name: Build and Test [${{ matrix.os }}][${{ matrix.mode }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        mode: [Debug, Release]
+        os: [ubuntu-latest] # TODO: fix issues building GTest Binary with MSVC in GitHub Actions
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-cpp
+
+      - name: Unit tests
+        run: ./unit_tests ${{ matrix.mode }}
+
+  benchmark:
+    name: Benchmark [${{ matrix.os }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-cpp
+
+      - name: Build benchmark
+        run: |
+          cmake -S . -B build -G Ninja -D CMAKE_BUILD_TYPE=Release
+          cmake --build build
+        working-directory: benchmark
+
+      - name: Run benchmark
+        run: ./build/benchmark
+        working-directory: benchmark
+
+  clang-format:
+    name: Format
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: clang-format
+        uses: ./.github/actions/clang-format
+        with:
+          directory: ./yoga

.github/workflows/validate-js.yml

@@ -0,0 +1,92 @@
+name: JavaScript
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  FORCE_COLOR: 3
+
+jobs:
+  benchmark:
+    name: Benchmark [${{ matrix.os }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-js
+
+      - name: yarn benchmark
+        run: yarn benchmark
+        working-directory: javascript
+
+  build:
+    name: Build [${{ matrix.os }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-js
+
+      - name: yarn build
+        run: yarn build
+        working-directory: javascript
+
+  test:
+    name: Test [${{ matrix.os }}]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-js
+
+      - name: yarn test
+        run: yarn test
+        working-directory: javascript
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: yarn install
+        run: yarn install --frozen-lockfile
+        working-directory: javascript
+
+      - name: yarn lint
+        run: yarn lint
+        working-directory: javascript
+
+  pack:
+    name: Pack
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-js
+
+      - name: yarn pack
+        run: yarn pack --filename yoga-layout.tar.gz
+        working-directory: javascript
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: npm-package
+          path: javascript/yoga-layout.tar.gz

.github/workflows/validate-python.yml

@@ -0,0 +1,21 @@
+name: Python
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  format:
+    name: Format
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: black --check
+        uses: ./.github/actions/black
+        with:
+          directory: ${{ github.workspace }}

.github/workflows/validate-website.yml

@@ -0,0 +1,23 @@
+name: Website
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup-website
+
+      - name: yarn build
+        run: yarn build
+        working-directory: website

.gitignore

@@ -5,10 +5,21 @@
 /.buckconfig.local
 /.buckd
 /gentest/test.html
-.buckversion
+.buck-java11
+
+# Jekyll
+/.sass-cache/
+/_site/
 
 # Visual studio code
-.vscode
+!.vscode
+
+*.pdb
+*.tlog
+*.obj
+*.pch
+*.log
+*.orig
 
 # Xcode
 ## Build generated
@@ -50,3 +61,14 @@ Pods/
 # Carthage/Checkouts
 
 Carthage/Build
+
+# Gradle
+.gradle
+local.properties
+
+# NDK/CMake
+.cxx
+.externalNativeBuild
+
+# Docusarus build
+.docusaurus

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "lib/gtest/googletest"]
-	path = lib/gtest/googletest
-	url = https://github.com/google/googletest.git

.hgignore

@@ -1,52 +0,0 @@
-.DS_STORE
-
-/buck-cache/
-/buck-out/
-/.buckconfig.local
-/.buckd
-/gentest/test.html
-.buckversion
-
-# Visual studio code
-.vscode
-
-# Xcode
-## Build generated
-build/
-DerivedData/
-
-## Various settings
-*.pbxuser
-!default.pbxuser
-*.mode1v3
-!default.mode1v3
-*.mode2v3
-!default.mode2v3
-*.perspectivev3
-!default.perspectivev3
-xcuserdata/
-
-## Other
-*.moved-aside
-*.xcuserstate
-
-## Obj-C/Swift specific
-*.hmap
-*.ipa
-*.dSYM.zip
-*.dSYM
-
-# CocoaPods
-#
-# We recommend against adding the Pods directory to your .gitignore. However
-# you should judge for yourself, the pros and cons are mentioned at:
-# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
-#
-Pods/
-
-# Carthage
-#
-# Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
-
-Carthage/Build

.travis.yml

@@ -1,30 +0,0 @@
-# Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
-# of patent rights can be found in the PATENTS file in the same directory.
-
-os: osx
-osx_image: xcode7.3
-language: cpp
-compiler: clang
-
-before_install:
-  - brew update
-  - brew tap facebook/fb
-  - brew install buck
-  - brew cask install java
-  - brew outdated xctool || brew upgrade xctool
-  - brew install mono
-  - export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
-  - export PATH=$JAVA_HOME/bin:$PATH
-
-script:
-  - buck test //:yoga
-  - buck test //java:java
-  - buck test //YogaKit:YogaKitTests --config cxx.default_platform=iphonesimulator-x86_64 --config cxx.cflags=-DTRAVIS_CI
-  - sh csharp/tests/Facebook.Yoga/test_macos.sh
-  - buck run //benchmark:benchmark
-  - git checkout HEAD^
-  - buck run //benchmark:benchmark

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "ms-vscode.cpptools",
+    "EditorConfig.EditorConfig",
+    "dbaeumer.vscode-eslint",
+  ]
+}

.vscode/launch.json

@@ -0,0 +1,25 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug C++ Unit tests (lldb)",
+      "type": "cppdbg",
+      "MIMode": "lldb",
+      "request": "launch",
+      "program": "${workspaceFolder}/tests/build/yogatests",
+      "cwd": "${workspaceFolder}",
+      "preLaunchTask": "Build Unit Tests"
+    },
+    {
+      "name": "Debug C++ Unit tests (vsdbg)",
+      "type": "cppvsdbg",
+      "request": "launch",
+      "program": "${workspaceFolder}/tests/build/yogatests",
+      "cwd": "${workspaceFolder}",
+      "preLaunchTask": "Build Unit Tests"
+    }
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,20 @@
+{
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.fixAll.eslint": true
+  },
+  "eslint.format.enable": true,
+  "eslint.packageManager": "yarn",
+  "eslint.enable": true,
+  "eslint.validate": [
+    "javascript",
+    "javascriptreact",
+    "typescript",
+    "typescriptreact"
+  ],
+  "eslint.workingDirectories": [
+    {
+      "mode": "auto"
+    }
+  ],
+}

.vscode/tasks.json

@@ -0,0 +1,23 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Build Unit Tests",
+      "type": "shell",
+      "command": "(which ninja && cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug -G Ninja || cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug) && cmake --build build",
+      "windows": {
+        "command": "(where ninja && cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug -G Ninja || cmake -B build -S . -D CMAKE_BUILD_TYPE=Debug) && cmake --build build",
+      },
+      "group": "build",
+      "options": {
+        "cwd": "tests"
+      },
+      "presentation": {
+        "reveal": "always",
+        "panel": "new"
+      }
+    }
+  ]
+}

BUCK

@@ -1,42 +0,0 @@
-# Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
-# of patent rights can be found in the PATENTS file in the same directory.
-
-include_defs('//YOGA_DEFS')
-
-GMOCK_OVERRIDE_FLAGS = [
-  # gmock does not mark mocked methods as override, ignore the warnings in tests
-  '-Wno-inconsistent-missing-override',
-]
-
-COMPILER_FLAGS = BASE_COMPILER_FLAGS + ['-std=c11', '-fPIC']
-TEST_COMPILER_FLAGS = BASE_COMPILER_FLAGS + GMOCK_OVERRIDE_FLAGS + ['-std=c++11']
-
-cxx_library(
-  name = 'yoga',
-  soname = 'libyogacore.$(ext)',
-  srcs = glob(['yoga/*.c']),
-  tests=[':YogaTests'],
-  exported_headers = subdir_glob([('', 'yoga/*.h')]),
-  header_namespace = '',
-  compiler_flags = COMPILER_FLAGS,
-  deps = [] if THIS_IS_FBOBJC else [
-    yoga_dep('lib/fb:ndklog'),
-  ],
-  visibility = ['PUBLIC'],
-)
-
-cxx_test(
-  name = 'YogaTests',
-  contacts = ['emilsj@fb.com'],
-  srcs = glob(['tests/*.cpp']),
-  compiler_flags = TEST_COMPILER_FLAGS,
-  deps = [
-    ':yoga',
-    GTEST_TARGET,
-  ],
-  visibility = ['PUBLIC'],
-)

CMakeLists.txt

@@ -0,0 +1,52 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+cmake_minimum_required(VERSION 3.13...3.26)
+project(yoga-all)
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/project-defaults.cmake)
+
+add_subdirectory(yoga)
+add_subdirectory(tests)
+
+# cmake install config
+include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+
+# declare target to install
+install(TARGETS yogacore EXPORT yoga-targets
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+
+# install header files
+install(DIRECTORY
+    "${CMAKE_CURRENT_LIST_DIR}/yoga"
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+    FILES_MATCHING PATTERN "*.h"
+)
+
+# install target config
+install(EXPORT yoga-targets
+    FILE yogaTargets.cmake
+    NAMESPACE yoga::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/yoga
+)
+
+
+# generate config file
+configure_package_config_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/yoga-config.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/yogaConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/yoga
+)
+
+# install config file
+install(FILES
+    ${CMAKE_CURRENT_BINARY_DIR}/yogaConfig.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/yoga
+)

CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at <opensource-conduct@fb.com>. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

CONTRIBUTING.md

@@ -2,9 +2,13 @@
 We want to make contributing to this project as easy and transparent as
 possible.
 
+## Code of Conduct
+
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.
+
 ## Pull Requests
 We actively welcome your pull requests.
-1. Fork the repo and create your branch from `master`.
+1. Fork the repo and create your branch from `main`.
 2. If you've added code that should be tested, add tests
 3. If you've changed APIs, update the documentation.
 4. Ensure the test suite passes.
@@ -25,9 +29,6 @@ Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
 disclosure of security bugs. In those cases, please go through the process
 outlined on that page and do not file a public issue.
 
-## Coding Style
-* format.sh
-
 ## License
 By contributing to yoga, you agree that your contributions will be licensed
-under its BSD license.
+under its MIT license.

LICENSE

@@ -1,30 +1,21 @@
-BSD License
+MIT License
 
-For yoga software
+Copyright (c) Facebook, Inc. and its affiliates.
 
-Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
- * 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 Facebook 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 HOLDER 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.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

PATENTS

@@ -1,33 +0,0 @@
-Additional Grant of Patent Rights Version 2
-
-"Software" means the yoga software distributed by Facebook, Inc.
-
-Facebook, Inc. (“Facebook”) hereby grants to each recipient of the Software
-(“you”) a perpetual, worldwide, royalty-free, non-exclusive, irrevocable
-(subject to the termination provision below) license under any Necessary
-Claims, to make, have made, use, sell, offer to sell, import, and otherwise
-transfer the Software. For avoidance of doubt, no license is granted under
-Facebook's rights in any patent claims that are infringed by (i) modifications
-to the Software made by you or any third party or (ii) the Software in
-combination with any software or other technology.
-
-The license granted hereunder will terminate, automatically and without notice,
-if you (or any of your subsidiaries, corporate affiliates or agents) initiate
-directly or indirectly, or take a direct financial interest in, any Patent
-Assertion: (i) against Facebook or any of its subsidiaries or corporate
-affiliates, (ii) against any party if such Patent Assertion arises in whole or
-in part from any software, technology, product or service of Facebook or any of
-its subsidiaries or corporate affiliates, or (iii) against any party relating
-to the Software. Notwithstanding the foregoing, if Facebook or any of its
-subsidiaries or corporate affiliates files a lawsuit alleging patent
-infringement against you in the first instance, and you respond by filing a
-patent infringement counterclaim in that lawsuit against that party that is
-unrelated to the Software, the license granted hereunder will not terminate
-under section (i) of this paragraph due to such counterclaim.
-
-A "Necessary Claim" is a claim of a patent owned by Facebook that is
-necessarily infringed by the Software standing alone.
-
-A "Patent Assertion" is any lawsuit or other action alleging direct, indirect,
-or contributory infringement or inducement to infringe any patent, including a
-cross-claim or counterclaim.

README.md

@@ -1,14 +1,24 @@
-# Yoga [![Build Status](https://travis-ci.org/facebook/yoga.svg?branch=master)](https://travis-ci.org/facebook/yoga)
+# Yoga [![Support Ukraine](https://img.shields.io/badge/Support-Ukraine-FFD500?style=flat&labelColor=005BBB)](https://opensource.fb.com/support-ukraine) [![CocoaPods](https://img.shields.io/cocoapods/v/YogaKit.svg)](http://cocoapods.org/pods/YogaKit) [![npm](https://img.shields.io/npm/v/yoga-layout.svg)](https://www.npmjs.com/package/yoga-layout) [![Maven Central](https://img.shields.io/maven-central/v/com.facebook.yoga/yoga)](https://search.maven.org/artifact/com.facebook.yoga/yoga)
+
+Yoga is an embeddable and performant flexbox layout engine with bindings for multiple languages.
+
 
 ## Building
-Yoga builds with [buck](https://buckbuild.com). Make sure you install buck before contributing to Yoga. Yoga's main implementation is in C, with bindings to supported languages and frameworks. When making changes to Yoga please ensure the changes are also propagated to these bindings when applicable.
+Yoga's main implementation targets C++ 14 with accompanying build logic in CMake. A wrapper is provided to build the main library and run unit tests.
 
-## Testing
-For testing we rely on [gtest](https://github.com/google/googletest) as a submodule. After cloning Yoga run `git submodule init` followed by `git submodule update`.
+```sh
+./unit_tests <Debug|Release>
+```
 
-For any changes you make you should ensure that all the tests are passing. In case you make any fixes or additions to the library please also add tests for that change to ensure we don't break anything in the future. Tests are located in the `tests` directory. Run the tests by executing `buck test //:yoga`.
+While not required, this script will use [ninja](https://ninja-build.org/) if it is installed for faster builds.
 
-Instead of manually writing a test which ensures parity with web implementations of Flexbox you can run `gentest/gentest.rb` to generated a test for you. You can write html which you want to verify in Yoga, in `gentest/fixtures` folder, such as the following.
+Yoga is additionally part of the [vcpkg](https://github.com/Microsoft/vcpkg/) collection of ports maintained by Microsoft 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.
+
+
+
+## Adding Tests
+
+Many of Yoga's tests are automatically generated, using HTML fixtures describing node structure. These are rendered in Chrome to generate an expected layout result for the tree. New fixtures can be added to `gentest/fixtures`.
 
 ```html
 <div id="my_test" style="width: 100px; height: 100px; align-items: center;">
@@ -16,15 +26,11 @@ Instead of manually writing a test which ensures parity with web implementations
 </div>
 ```
 
-Run `gentest/gentest.rb` to generate test code and re-run `buck test //:yoga` to validate the behavior. One test case will be generated for every root `div` in the input html.
+To generate new tests from added fixtures:
+1. Run `bundle install` in the `gentest` directory to install dependencies of the test generator.
+2. Run `ruby gentest.rb` in the `gentest` directory.
 
-You may need to install the latest watir-webdriver gem (`gem install watir-webdriver`) and [ChromeDriver](https://sites.google.com/a/chromium.org/chromedriver/) to run `gentest/gentest.rb` Ruby script.
 
-### .NET
-.NET testing is not integrated in buck yet, you might need to set up .NET testing environment. We have a script which to launch C# test on macOS, `csharp/tests/Facebook.Yoga/test_macos.sh`.
+## Debugging
 
-## Code style
-For the main C implementation of Yoga clang-format is used to ensure a consistent code style. Please run `bash format.sh` before submitting a pull request. For other languages just try to follow the current code style.
-
-## Benchmarks
-Benchmarks are located in `benchmarks/YGBenchmark.c` and can be run with `buck run //benchmarks:benchmarks`. If you think your change has affected performance please run this before and after your change to validate that nothing has regressed. Benchmarks are run on every commit in CI.
+Yoga provides a VSCode "launch.json" configuration which allows debugging unit tests. Simply add your breakpoints, and run "Debug C++ Unit tests (lldb)" (or "Debug C++ Unit tests (vsdbg)" on Windows).

YOGA_DEFS

@@ -1,35 +0,0 @@
-
-YOGA_ROOT = '//...'
-INFER_ANNOTATIONS_TARGET = '//lib/infer-annotations:infer-annotations'
-JSR_305_TARGET = '//lib/jsr-305:jsr-305'
-JUNIT_TARGET = '//lib/junit:junit'
-PROGRUARD_ANNOTATIONS_TARGET = '//java/com/facebook/proguard/annotations:annotations'
-SOLOADER_TARGET = '//lib/soloader:soloader'
-GTEST_TARGET = '//lib/gtest:gtest'
-JNI_TARGET = '//lib/jni:jni'
-FBJNI_TARGET = '//lib/fb:fbjni'
-
-THIS_IS_FBOBJC = False
-
-CXX_LIBRARY_WHITELIST = [
-  '//:yoga',
-  '//lib/fb:fbjni',
-  '//java:jni',
-]
-
-BASE_COMPILER_FLAGS = [
-  '-fno-omit-frame-pointer',
-  '-fexceptions',
-  '-Wall',
-  '-Werror',
-  '-O3',
-]
-
-def yoga_dep(dep):
-  return '//' + dep
-
-class allow_unsafe_import:
-    def __enter__(self):
-        pass
-    def __exit__(self, type, value, traceback):
-        pass

Yoga.podspec

@@ -0,0 +1,41 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+
+Pod::Spec.new do |spec|
+  spec.name = 'Yoga'
+  spec.version = '2.0.0'
+  spec.license =  { :type => 'MIT', :file => "LICENSE" }
+  spec.homepage = 'https://yogalayout.com/'
+  spec.documentation_url = 'https://yogalayout.com/docs'
+
+  spec.summary = 'An embeddable and performant flexbox layout engine with bindings for multiple languages'
+
+  spec.authors = {'Meta Open Source' => 'opensource@meta.com'}
+  spec.source = {
+    :git => 'https://github.com/facebook/yoga.git',
+    :tag => "v#{spec.version.to_s}",
+  }
+
+  spec.ios.deployment_target = "13.4"
+
+  spec.module_name = 'yoga'
+  spec.requires_arc = false
+  spec.pod_target_xcconfig = {
+    'DEFINES_MODULE' => 'YES'
+  }
+  spec.compiler_flags = [
+      '-fno-omit-frame-pointer',
+      '-fexceptions',
+      '-Wall',
+      '-Werror',
+      '-Wextra',
+      '-std=c++14',
+      '-fPIC'
+  ]
+  spec.source_files = 'yoga/**/*.{h,cpp}'
+  spec.public_header_files = 'yoga/{Yoga,YGEnums,YGMacros,YGValue}.h'
+  spec.swift_version = '5.1'
+end

YogaKit.podspec

@@ -0,0 +1,34 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+podspec = Pod::Spec.new do |spec|
+  spec.name = 'YogaKit'
+  spec.version = '2.0.0'
+  spec.license =  { :type => 'MIT', :file => "LICENSE" }
+  spec.homepage = 'https://yogalayout.com/'
+  spec.documentation_url = 'https://yogalayout.com/docs'
+  spec.deprecated = true
+
+  spec.summary = 'YogaKit allows using the Yoga layout engine in combination with UIKit'
+
+  spec.authors = {'Meta Open Source' => 'opensource@meta.com'}
+  spec.source = {
+    :git => 'https://github.com/facebook/yoga.git',
+    :tag => "v#{spec.version.to_s}",
+  }
+
+  spec.platforms = { :ios => "13.4" }
+  spec.ios.frameworks = 'UIKit'
+  spec.module_name = 'YogaKit'
+  spec.dependency 'Yoga', "~> #{spec.version.to_s}"
+  spec.source_files = 'YogaKit/Source/*.{h,m,swift}'
+  spec.public_header_files = 'YogaKit/Source/{YGLayout,UIView+Yoga}.h'
+  spec.private_header_files = 'YogaKit/Source/YGLayout+Private.h'
+  spec.swift_version = '5.1'
+end
+
+# See https://github.com/facebook/yoga/pull/366
+podspec.attributes_hash["readme"] = "YogaKit/README.md"
+podspec

YogaKit/BUCK

@@ -1,58 +0,0 @@
-# Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
-# of patent rights can be found in the PATENTS file in the same directory.
-
-include_defs('//YOGA_DEFS')
-
-COMPILER_FLAGS = [
-  '-fobjc-arc',
-  '-Wconditional-uninitialized',
-  '-Wdangling-else',
-  '-Wdeprecated-declarations',
-  '-Wimplicit-retain-self',
-  '-Wincomplete-implementation',
-  '-Wobjc-method-access',
-  '-Wobjc-missing-super-calls',
-  '-Wmismatched-return-types',
-  '-Wreturn-type',
-  '-Wno-global-constructors',
-  '-Wno-shadow',
-  '-Wunused-const-variable',
-  '-Wunused-function',
-  '-Wunused-property-ivar',
-  '-Wunused-result',
-  '-Wunused-value',
-]
-
-apple_library(
-  name = 'YogaKit',
-  compiler_flags = COMPILER_FLAGS,
-  srcs = glob(['*.m']),
-  exported_headers = glob(['*.h']),
-  frameworks = [
-    '$SDKROOT/System/Library/Frameworks/Foundation.framework',
-    '$SDKROOT/System/Library/Frameworks/UIKit.framework',
-  ],
-  deps = [
-    yoga_dep(':yoga'),
-  ],
-  visibility = ['PUBLIC'],
-)
-
-apple_test(
-  name = 'YogaKitTests',
-  compiler_flags = COMPILER_FLAGS,
-  info_plist = 'Tests/Info.plist',
-  srcs = glob(['Tests/**/*.m']),
-  frameworks = [
-    '$SDKROOT/System/Library/Frameworks/CoreGraphics.framework',
-    '$PLATFORM_DIR/Developer/Library/Frameworks/XCTest.framework',
-  ],
-  deps = [
-    ':YogaKit',
-  ],
-  visibility = ['PUBLIC'],
-)

YogaKit/README.md

@@ -0,0 +1,21 @@
+# YogaKit
+
+[![CocoaPods](https://img.shields.io/cocoapods/v/YogaKit.svg?style=flat)](https://cocoapods.org/pods/YogaKit)
+[![Platform](https://img.shields.io/badge/platforms-iOS-orange.svg)](https://facebook.github.io/yoga/docs/api/yogakit/)
+[![Languages](https://img.shields.io/badge/languages-ObjC%20%7C%20Swift-orange.svg)](https://facebook.github.io/yoga/docs/api/yogakit/)
+
+## Installation
+YogaKit is available to install via [CocoaPods](https://cocoapods.org/).
+
+```
+pod 'YogaKit', '~> 1.7'
+```
+
+## Getting Started
+
+We have a sample project. To try it out, clone this repo and open `YogaKitSample.xcodeproj` in the [YogaKitSample](https://github.com/facebook/yoga/tree/main/YogaKit/YogaKitSample) directory.
+
+## Contributing
+We welcome all pull-requests! At Facebook we sync the open source version of `YogaKit` daily, so we're always testing the latest changes.
+
+See the [CONTRIBUTING.md](https://github.com/facebook/yoga/blob/main/CONTRIBUTING.md) file for how to help out.

YogaKit/Source/UIView+Yoga.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <UIKit/UIKit.h>
+#import "YGLayout.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef void (^YGLayoutConfigurationBlock)(YGLayout* layout);
+
+@interface UIView (Yoga)
+
+/**
+ The YGLayout that is attached to this view. It is lazily created.
+ */
+@property(nonatomic, readonly, strong) YGLayout* yoga;
+/**
+ Indicates whether or not Yoga is enabled
+ */
+@property(nonatomic, readonly, assign) BOOL isYogaEnabled;
+
+/**
+ In ObjC land, every time you access `view.yoga.*` you are adding another
+ `objc_msgSend` to your code. If you plan on making multiple changes to
+ YGLayout, it's more performant to use this method, which uses a single
+ objc_msgSend call.
+ */
+- (void)configureLayoutWithBlock:(YGLayoutConfigurationBlock)block
+    NS_SWIFT_NAME(configureLayout(block:));
+
+@end
+
+NS_ASSUME_NONNULL_END

YogaKit/Source/UIView+Yoga.m

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <objc/runtime.h>
+#import "UIView+Yoga.h"
+#import "YGLayout+Private.h"
+
+static const void* kYGYogaAssociatedKey = &kYGYogaAssociatedKey;
+
+@implementation UIView (YogaKit)
+
+- (YGLayout*)yoga {
+  YGLayout* yoga = objc_getAssociatedObject(self, kYGYogaAssociatedKey);
+  if (!yoga) {
+    yoga = [[YGLayout alloc] initWithView:self];
+    objc_setAssociatedObject(
+        self, kYGYogaAssociatedKey, yoga, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+  }
+
+  return yoga;
+}
+
+- (BOOL)isYogaEnabled {
+  return objc_getAssociatedObject(self, kYGYogaAssociatedKey) != nil;
+}
+
+- (void)configureLayoutWithBlock:(YGLayoutConfigurationBlock)block {
+  if (block != nil) {
+    block(self.yoga);
+  }
+}
+
+@end

YogaKit/Source/YGLayout+Private.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <yoga/Yoga.h>
+#import "YGLayout.h"
+
+@interface YGLayout ()
+
+@property(nonatomic, assign, readonly) YGNodeRef node;
+
+- (instancetype)initWithView:(UIView*)view;
+
+@end

YogaKit/Source/YGLayout.h

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <UIKit/UIKit.h>
+#import <yoga/YGEnums.h>
+#import <yoga/YGMacros.h>
+#import <yoga/Yoga.h>
+
+YG_EXTERN_C_BEGIN
+
+extern YGValue YGPointValue(CGFloat value) NS_SWIFT_UNAVAILABLE(
+    "Use the swift Int and FloatingPoint extensions instead");
+extern YGValue YGPercentValue(CGFloat value) NS_SWIFT_UNAVAILABLE(
+    "Use the swift Int and FloatingPoint extensions instead");
+
+YG_EXTERN_C_END
+
+typedef NS_OPTIONS(NSInteger, YGDimensionFlexibility) {
+  YGDimensionFlexibilityFlexibleWidth = 1 << 0,
+  YGDimensionFlexibilityFlexibleHeight = 1 << 1,
+};
+
+@interface YGLayout : NSObject
+
+/**
+ Make default init unavailable, as it will not initialise YGNode which is
+ required for the setters and getters of YGLayout's properties to work properly.
+*/
+- (instancetype)init
+    __attribute__((unavailable("you are not meant to initialise YGLayout")));
+
+/**
+ Make default init unavailable, as it will not initialise YGNode which is
+ required for the setters and getters of YGLayout's properties to work properly.
+ */
++ (instancetype)new
+    __attribute__((unavailable("you are not meant to initialise YGLayout")));
+
+/**
+  The property that decides if we should include this view when calculating
+  layout. Defaults to YES.
+ */
+@property(nonatomic, readwrite, assign, setter=setIncludedInLayout:)
+    BOOL isIncludedInLayout;
+
+/**
+ The property that decides during layout/sizing whether or not styling
+ properties should be applied. Defaults to NO.
+ */
+@property(nonatomic, readwrite, assign, setter=setEnabled:) BOOL isEnabled;
+
+@property(nonatomic, readwrite, assign) YGDirection direction;
+@property(nonatomic, readwrite, assign) YGFlexDirection flexDirection;
+@property(nonatomic, readwrite, assign) YGJustify justifyContent;
+@property(nonatomic, readwrite, assign) YGAlign alignContent;
+@property(nonatomic, readwrite, assign) YGAlign alignItems;
+@property(nonatomic, readwrite, assign) YGAlign alignSelf;
+@property(nonatomic, readwrite, assign) YGPositionType position;
+@property(nonatomic, readwrite, assign) YGWrap flexWrap;
+@property(nonatomic, readwrite, assign) YGOverflow overflow;
+@property(nonatomic, readwrite, assign) YGDisplay display;
+
+@property(nonatomic, readwrite, assign) CGFloat flex;
+@property(nonatomic, readwrite, assign) CGFloat flexGrow;
+@property(nonatomic, readwrite, assign) CGFloat flexShrink;
+@property(nonatomic, readwrite, assign) YGValue flexBasis;
+
+@property(nonatomic, readwrite, assign) YGValue left;
+@property(nonatomic, readwrite, assign) YGValue top;
+@property(nonatomic, readwrite, assign) YGValue right;
+@property(nonatomic, readwrite, assign) YGValue bottom;
+@property(nonatomic, readwrite, assign) YGValue start;
+@property(nonatomic, readwrite, assign) YGValue end;
+
+@property(nonatomic, readwrite, assign) YGValue marginLeft;
+@property(nonatomic, readwrite, assign) YGValue marginTop;
+@property(nonatomic, readwrite, assign) YGValue marginRight;
+@property(nonatomic, readwrite, assign) YGValue marginBottom;
+@property(nonatomic, readwrite, assign) YGValue marginStart;
+@property(nonatomic, readwrite, assign) YGValue marginEnd;
+@property(nonatomic, readwrite, assign) YGValue marginHorizontal;
+@property(nonatomic, readwrite, assign) YGValue marginVertical;
+@property(nonatomic, readwrite, assign) YGValue margin;
+
+@property(nonatomic, readwrite, assign) YGValue paddingLeft;
+@property(nonatomic, readwrite, assign) YGValue paddingTop;
+@property(nonatomic, readwrite, assign) YGValue paddingRight;
+@property(nonatomic, readwrite, assign) YGValue paddingBottom;
+@property(nonatomic, readwrite, assign) YGValue paddingStart;
+@property(nonatomic, readwrite, assign) YGValue paddingEnd;
+@property(nonatomic, readwrite, assign) YGValue paddingHorizontal;
+@property(nonatomic, readwrite, assign) YGValue paddingVertical;
+@property(nonatomic, readwrite, assign) YGValue padding;
+
+@property(nonatomic, readwrite, assign) CGFloat borderLeftWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderTopWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderRightWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderBottomWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderStartWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderEndWidth;
+@property(nonatomic, readwrite, assign) CGFloat borderWidth;
+
+@property(nonatomic, readwrite, assign) YGValue width;
+@property(nonatomic, readwrite, assign) YGValue height;
+@property(nonatomic, readwrite, assign) YGValue minWidth;
+@property(nonatomic, readwrite, assign) YGValue minHeight;
+@property(nonatomic, readwrite, assign) YGValue maxWidth;
+@property(nonatomic, readwrite, assign) YGValue maxHeight;
+
+// Yoga specific properties, not compatible with flexbox specification
+@property(nonatomic, readwrite, assign) CGFloat aspectRatio;
+
+/**
+ Get the resolved direction of this node. This won't be YGDirectionInherit
+ */
+@property(nonatomic, readonly, assign) YGDirection resolvedDirection;
+
+/**
+ Perform a layout calculation and update the frames of the views in the
+ hierarchy with the results. If the origin is not preserved, the root view's
+ layout results will applied from {0,0}.
+ */
+- (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin
+    NS_SWIFT_NAME(applyLayout(preservingOrigin:));
+
+/**
+ Perform a layout calculation and update the frames of the views in the
+ hierarchy with the results. If the origin is not preserved, the root view's
+ layout results will applied from {0,0}.
+ */
+- (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin
+               dimensionFlexibility:(YGDimensionFlexibility)dimensionFlexibility
+    NS_SWIFT_NAME(applyLayout(preservingOrigin:dimensionFlexibility:));
+
+/**
+ Returns the size of the view if no constraints were given. This could
+ equivalent to calling [self sizeThatFits:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)];
+ */
+@property(nonatomic, readonly, assign) CGSize intrinsicSize;
+
+/**
+  Returns the size of the view based on provided constraints. Pass NaN for an
+  unconstrained dimension.
+ */
+- (CGSize)calculateLayoutWithSize:(CGSize)size
+    NS_SWIFT_NAME(calculateLayout(with:));
+
+/**
+ Returns the number of children that are using Flexbox.
+ */
+@property(nonatomic, readonly, assign) NSUInteger numberOfChildren;
+
+/**
+ Return a BOOL indiciating whether or not we this node contains any subviews
+ that are included in Yoga's layout.
+ */
+@property(nonatomic, readonly, assign) BOOL isLeaf;
+
+/**
+ Return's a BOOL indicating if a view is dirty. When a node is dirty
+ it usually indicates that it will be remeasured on the next layout pass.
+ */
+@property(nonatomic, readonly, assign) BOOL isDirty;
+
+/**
+ Mark that a view's layout needs to be recalculated. Only works for leaf views.
+ */
+- (void)markDirty;
+
+@end

YogaKit/Source/YGLayout.m

@@ -0,0 +1,511 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "UIView+Yoga.h"
+#import "YGLayout+Private.h"
+
+#define YG_PROPERTY(type, lowercased_name, capitalized_name)      \
+  -(type)lowercased_name {                                        \
+    return YGNodeStyleGet##capitalized_name(self.node);           \
+  }                                                               \
+                                                                  \
+  -(void)set##capitalized_name : (type)lowercased_name {          \
+    YGNodeStyleSet##capitalized_name(self.node, lowercased_name); \
+  }
+
+#define YG_VALUE_PROPERTY(lowercased_name, capitalized_name)                \
+  -(YGValue)lowercased_name {                                               \
+    return YGNodeStyleGet##capitalized_name(self.node);                     \
+  }                                                                         \
+                                                                            \
+  -(void)set##capitalized_name : (YGValue)lowercased_name {                 \
+    switch (lowercased_name.unit) {                                         \
+      case YGUnitUndefined:                                                 \
+        YGNodeStyleSet##capitalized_name(self.node, lowercased_name.value); \
+        break;                                                              \
+      case YGUnitPoint:                                                     \
+        YGNodeStyleSet##capitalized_name(self.node, lowercased_name.value); \
+        break;                                                              \
+      case YGUnitPercent:                                                   \
+        YGNodeStyleSet##capitalized_name##Percent(                          \
+            self.node, lowercased_name.value);                              \
+        break;                                                              \
+      default:                                                              \
+        NSAssert(NO, @"Not implemented");                                   \
+    }                                                                       \
+  }
+
+#define YG_AUTO_VALUE_PROPERTY(lowercased_name, capitalized_name)           \
+  -(YGValue)lowercased_name {                                               \
+    return YGNodeStyleGet##capitalized_name(self.node);                     \
+  }                                                                         \
+                                                                            \
+  -(void)set##capitalized_name : (YGValue)lowercased_name {                 \
+    switch (lowercased_name.unit) {                                         \
+      case YGUnitPoint:                                                     \
+        YGNodeStyleSet##capitalized_name(self.node, lowercased_name.value); \
+        break;                                                              \
+      case YGUnitPercent:                                                   \
+        YGNodeStyleSet##capitalized_name##Percent(                          \
+            self.node, lowercased_name.value);                              \
+        break;                                                              \
+      case YGUnitAuto:                                                      \
+        YGNodeStyleSet##capitalized_name##Auto(self.node);                  \
+        break;                                                              \
+      default:                                                              \
+        NSAssert(NO, @"Not implemented");                                   \
+    }                                                                       \
+  }
+
+#define YG_EDGE_PROPERTY_GETTER(                             \
+    type, lowercased_name, capitalized_name, property, edge) \
+  -(type)lowercased_name {                                   \
+    return YGNodeStyleGet##property(self.node, edge);        \
+  }
+
+#define YG_EDGE_PROPERTY_SETTER(                                \
+    lowercased_name, capitalized_name, property, edge)          \
+  -(void)set##capitalized_name : (CGFloat)lowercased_name {     \
+    YGNodeStyleSet##property(self.node, edge, lowercased_name); \
+  }
+
+#define YG_EDGE_PROPERTY(lowercased_name, capitalized_name, property, edge) \
+  YG_EDGE_PROPERTY_GETTER(                                                  \
+      CGFloat, lowercased_name, capitalized_name, property, edge)           \
+  YG_EDGE_PROPERTY_SETTER(lowercased_name, capitalized_name, property, edge)
+
+#define YG_VALUE_EDGE_PROPERTY_SETTER(                                       \
+    objc_lowercased_name, objc_capitalized_name, c_name, edge)               \
+  -(void)set##objc_capitalized_name : (YGValue)objc_lowercased_name {        \
+    switch (objc_lowercased_name.unit) {                                     \
+      case YGUnitUndefined:                                                  \
+        YGNodeStyleSet##c_name(self.node, edge, objc_lowercased_name.value); \
+        break;                                                               \
+      case YGUnitPoint:                                                      \
+        YGNodeStyleSet##c_name(self.node, edge, objc_lowercased_name.value); \
+        break;                                                               \
+      case YGUnitPercent:                                                    \
+        YGNodeStyleSet##c_name##Percent(                                     \
+            self.node, edge, objc_lowercased_name.value);                    \
+        break;                                                               \
+      default:                                                               \
+        NSAssert(NO, @"Not implemented");                                    \
+    }                                                                        \
+  }
+
+#define YG_VALUE_EDGE_PROPERTY(                                   \
+    lowercased_name, capitalized_name, property, edge)            \
+  YG_EDGE_PROPERTY_GETTER(                                        \
+      YGValue, lowercased_name, capitalized_name, property, edge) \
+  YG_VALUE_EDGE_PROPERTY_SETTER(                                  \
+      lowercased_name, capitalized_name, property, edge)
+
+#define YG_VALUE_EDGES_PROPERTIES(lowercased_name, capitalized_name) \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Left,                                         \
+      capitalized_name##Left,                                        \
+      capitalized_name,                                              \
+      YGEdgeLeft)                                                    \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Top,                                          \
+      capitalized_name##Top,                                         \
+      capitalized_name,                                              \
+      YGEdgeTop)                                                     \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Right,                                        \
+      capitalized_name##Right,                                       \
+      capitalized_name,                                              \
+      YGEdgeRight)                                                   \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Bottom,                                       \
+      capitalized_name##Bottom,                                      \
+      capitalized_name,                                              \
+      YGEdgeBottom)                                                  \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Start,                                        \
+      capitalized_name##Start,                                       \
+      capitalized_name,                                              \
+      YGEdgeStart)                                                   \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##End,                                          \
+      capitalized_name##End,                                         \
+      capitalized_name,                                              \
+      YGEdgeEnd)                                                     \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Horizontal,                                   \
+      capitalized_name##Horizontal,                                  \
+      capitalized_name,                                              \
+      YGEdgeHorizontal)                                              \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name##Vertical,                                     \
+      capitalized_name##Vertical,                                    \
+      capitalized_name,                                              \
+      YGEdgeVertical)                                                \
+  YG_VALUE_EDGE_PROPERTY(                                            \
+      lowercased_name, capitalized_name, capitalized_name, YGEdgeAll)
+
+YGValue YGPointValue(CGFloat value) {
+  return (YGValue){.value = value, .unit = YGUnitPoint};
+}
+
+YGValue YGPercentValue(CGFloat value) {
+  return (YGValue){.value = value, .unit = YGUnitPercent};
+}
+
+static YGConfigRef globalConfig;
+
+@interface YGLayout ()
+
+@property(nonatomic, weak, readonly) UIView* view;
+@property(nonatomic, assign, readonly) BOOL isUIView;
+
+@end
+
+@implementation YGLayout
+
+@synthesize isEnabled = _isEnabled;
+@synthesize isIncludedInLayout = _isIncludedInLayout;
+@synthesize node = _node;
+
++ (void)initialize {
+  globalConfig = YGConfigNew();
+  YGConfigSetExperimentalFeatureEnabled(
+      globalConfig, YGExperimentalFeatureWebFlexBasis, true);
+  YGConfigSetErrata(globalConfig, YGErrataClassic);
+  YGConfigSetPointScaleFactor(globalConfig, [UIScreen mainScreen].scale);
+}
+
+- (instancetype)initWithView:(UIView*)view {
+  if (self = [super init]) {
+    _view = view;
+    _node = YGNodeNewWithConfig(globalConfig);
+    YGNodeSetContext(_node, (__bridge void*)view);
+    _isEnabled = NO;
+    _isIncludedInLayout = YES;
+    _isUIView = [view isMemberOfClass:[UIView class]];
+  }
+
+  return self;
+}
+
+- (void)dealloc {
+  YGNodeFree(self.node);
+}
+
+- (BOOL)isDirty {
+  return YGNodeIsDirty(self.node);
+}
+
+- (void)markDirty {
+  if (self.isDirty || !self.isLeaf) {
+    return;
+  }
+
+  // Yoga is not happy if we try to mark a node as "dirty" before we have set
+  // the measure function. Since we already know that this is a leaf,
+  // this *should* be fine. Forgive me Hack Gods.
+  const YGNodeRef node = self.node;
+  if (!YGNodeHasMeasureFunc(node)) {
+    YGNodeSetMeasureFunc(node, YGMeasureView);
+  }
+
+  YGNodeMarkDirty(node);
+}
+
+- (NSUInteger)numberOfChildren {
+  return YGNodeGetChildCount(self.node);
+}
+
+- (BOOL)isLeaf {
+  NSAssert(
+      [NSThread isMainThread],
+      @"This method must be called on the main thread.");
+  if (self.isEnabled) {
+    for (UIView* subview in self.view.subviews) {
+      YGLayout* const yoga = subview.yoga;
+      if (yoga.isEnabled && yoga.isIncludedInLayout) {
+        return NO;
+      }
+    }
+  }
+
+  return YES;
+}
+
+#pragma mark - Style
+
+- (YGPositionType)position {
+  return YGNodeStyleGetPositionType(self.node);
+}
+
+- (void)setPosition:(YGPositionType)position {
+  YGNodeStyleSetPositionType(self.node, position);
+}
+
+YG_PROPERTY(YGDirection, direction, Direction)
+YG_PROPERTY(YGFlexDirection, flexDirection, FlexDirection)
+YG_PROPERTY(YGJustify, justifyContent, JustifyContent)
+YG_PROPERTY(YGAlign, alignContent, AlignContent)
+YG_PROPERTY(YGAlign, alignItems, AlignItems)
+YG_PROPERTY(YGAlign, alignSelf, AlignSelf)
+YG_PROPERTY(YGWrap, flexWrap, FlexWrap)
+YG_PROPERTY(YGOverflow, overflow, Overflow)
+YG_PROPERTY(YGDisplay, display, Display)
+
+YG_PROPERTY(CGFloat, flex, Flex)
+YG_PROPERTY(CGFloat, flexGrow, FlexGrow)
+YG_PROPERTY(CGFloat, flexShrink, FlexShrink)
+YG_AUTO_VALUE_PROPERTY(flexBasis, FlexBasis)
+
+YG_VALUE_EDGE_PROPERTY(left, Left, Position, YGEdgeLeft)
+YG_VALUE_EDGE_PROPERTY(top, Top, Position, YGEdgeTop)
+YG_VALUE_EDGE_PROPERTY(right, Right, Position, YGEdgeRight)
+YG_VALUE_EDGE_PROPERTY(bottom, Bottom, Position, YGEdgeBottom)
+YG_VALUE_EDGE_PROPERTY(start, Start, Position, YGEdgeStart)
+YG_VALUE_EDGE_PROPERTY(end, End, Position, YGEdgeEnd)
+YG_VALUE_EDGES_PROPERTIES(margin, Margin)
+YG_VALUE_EDGES_PROPERTIES(padding, Padding)
+
+YG_EDGE_PROPERTY(borderLeftWidth, BorderLeftWidth, Border, YGEdgeLeft)
+YG_EDGE_PROPERTY(borderTopWidth, BorderTopWidth, Border, YGEdgeTop)
+YG_EDGE_PROPERTY(borderRightWidth, BorderRightWidth, Border, YGEdgeRight)
+YG_EDGE_PROPERTY(borderBottomWidth, BorderBottomWidth, Border, YGEdgeBottom)
+YG_EDGE_PROPERTY(borderStartWidth, BorderStartWidth, Border, YGEdgeStart)
+YG_EDGE_PROPERTY(borderEndWidth, BorderEndWidth, Border, YGEdgeEnd)
+YG_EDGE_PROPERTY(borderWidth, BorderWidth, Border, YGEdgeAll)
+
+YG_AUTO_VALUE_PROPERTY(width, Width)
+YG_AUTO_VALUE_PROPERTY(height, Height)
+YG_VALUE_PROPERTY(minWidth, MinWidth)
+YG_VALUE_PROPERTY(minHeight, MinHeight)
+YG_VALUE_PROPERTY(maxWidth, MaxWidth)
+YG_VALUE_PROPERTY(maxHeight, MaxHeight)
+YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
+
+YG_EDGE_PROPERTY(columnGap, ColumnGap, Gap, YGGutterColumn)
+YG_EDGE_PROPERTY(rowGap, RowGap, Gap, YGGutterRow)
+YG_EDGE_PROPERTY(gap, Gap, Gap, YGGutterAll)
+
+#pragma mark - Layout and Sizing
+
+- (YGDirection)resolvedDirection {
+  return YGNodeLayoutGetDirection(self.node);
+}
+
+- (void)applyLayout {
+  [self calculateLayoutWithSize:self.view.bounds.size];
+  YGApplyLayoutToViewHierarchy(self.view, NO);
+}
+
+- (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin {
+  [self calculateLayoutWithSize:self.view.bounds.size];
+  YGApplyLayoutToViewHierarchy(self.view, preserveOrigin);
+}
+
+- (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin
+               dimensionFlexibility:
+                   (YGDimensionFlexibility)dimensionFlexibility {
+  CGSize size = self.view.bounds.size;
+  if (dimensionFlexibility & YGDimensionFlexibilityFlexibleWidth) {
+    size.width = YGUndefined;
+  }
+  if (dimensionFlexibility & YGDimensionFlexibilityFlexibleHeight) {
+    size.height = YGUndefined;
+  }
+  [self calculateLayoutWithSize:size];
+  YGApplyLayoutToViewHierarchy(self.view, preserveOrigin);
+}
+
+- (CGSize)intrinsicSize {
+  const CGSize constrainedSize = {
+      .width = YGUndefined,
+      .height = YGUndefined,
+  };
+  return [self calculateLayoutWithSize:constrainedSize];
+}
+
+- (CGSize)calculateLayoutWithSize:(CGSize)size {
+  NSAssert([NSThread isMainThread], @"Yoga calculation must be done on main.");
+  NSAssert(self.isEnabled, @"Yoga is not enabled for this view.");
+
+  YGAttachNodesFromViewHierachy(self.view);
+
+  const YGNodeRef node = self.node;
+  YGNodeCalculateLayout(
+      node, size.width, size.height, YGNodeStyleGetDirection(node));
+
+  return (CGSize){
+      .width = YGNodeLayoutGetWidth(node),
+      .height = YGNodeLayoutGetHeight(node),
+  };
+}
+
+#pragma mark - Private
+
+static YGSize YGMeasureView(
+    YGNodeRef node,
+    float width,
+    YGMeasureMode widthMode,
+    float height,
+    YGMeasureMode heightMode) {
+  const CGFloat constrainedWidth =
+      (widthMode == YGMeasureModeUndefined) ? CGFLOAT_MAX : width;
+  const CGFloat constrainedHeight =
+      (heightMode == YGMeasureModeUndefined) ? CGFLOAT_MAX : height;
+
+  UIView* view = (__bridge UIView*)YGNodeGetContext(node);
+  CGSize sizeThatFits = CGSizeZero;
+
+  // The default implementation of sizeThatFits: returns the existing size of
+  // the view. That means that if we want to layout an empty UIView, which
+  // already has got a frame set, its measured size should be CGSizeZero, but
+  // UIKit returns the existing size.
+  //
+  // See https://github.com/facebook/yoga/issues/606 for more information.
+  if (!view.yoga.isUIView || [view.subviews count] > 0) {
+    sizeThatFits = [view sizeThatFits:(CGSize){
+                                          .width = constrainedWidth,
+                                          .height = constrainedHeight,
+                                      }];
+  }
+
+  return (YGSize){
+      .width = YGSanitizeMeasurement(
+          constrainedWidth, sizeThatFits.width, widthMode),
+      .height = YGSanitizeMeasurement(
+          constrainedHeight, sizeThatFits.height, heightMode),
+  };
+}
+
+static CGFloat YGSanitizeMeasurement(
+    CGFloat constrainedSize,
+    CGFloat measuredSize,
+    YGMeasureMode measureMode) {
+  CGFloat result;
+  if (measureMode == YGMeasureModeExactly) {
+    result = constrainedSize;
+  } else if (measureMode == YGMeasureModeAtMost) {
+    result = MIN(constrainedSize, measuredSize);
+  } else {
+    result = measuredSize;
+  }
+
+  return result;
+}
+
+static BOOL YGNodeHasExactSameChildren(
+    const YGNodeRef node,
+    NSArray<UIView*>* subviews) {
+  if (YGNodeGetChildCount(node) != subviews.count) {
+    return NO;
+  }
+
+  for (int i = 0; i < subviews.count; i++) {
+    if (YGNodeGetChild(node, i) != subviews[i].yoga.node) {
+      return NO;
+    }
+  }
+
+  return YES;
+}
+
+static void YGAttachNodesFromViewHierachy(UIView* const view) {
+  YGLayout* const yoga = view.yoga;
+  const YGNodeRef node = yoga.node;
+
+  // Only leaf nodes should have a measure function
+  if (yoga.isLeaf) {
+    YGRemoveAllChildren(node);
+    YGNodeSetMeasureFunc(node, YGMeasureView);
+  } else {
+    YGNodeSetMeasureFunc(node, NULL);
+
+    NSMutableArray<UIView*>* subviewsToInclude =
+        [[NSMutableArray alloc] initWithCapacity:view.subviews.count];
+    for (UIView* subview in view.subviews) {
+      if (subview.yoga.isEnabled && subview.yoga.isIncludedInLayout) {
+        [subviewsToInclude addObject:subview];
+      }
+    }
+
+    if (!YGNodeHasExactSameChildren(node, subviewsToInclude)) {
+      YGRemoveAllChildren(node);
+      for (int i = 0; i < subviewsToInclude.count; i++) {
+        YGNodeInsertChild(node, subviewsToInclude[i].yoga.node, i);
+      }
+    }
+
+    for (UIView* const subview in subviewsToInclude) {
+      YGAttachNodesFromViewHierachy(subview);
+    }
+  }
+}
+
+static void YGRemoveAllChildren(const YGNodeRef node) {
+  if (node == NULL) {
+    return;
+  }
+
+  YGNodeRemoveAllChildren(node);
+}
+
+static CGFloat YGRoundPixelValue(CGFloat value) {
+  static CGFloat scale;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^() {
+    scale = [UIScreen mainScreen].scale;
+  });
+
+  return roundf(value * scale) / scale;
+}
+
+static void YGApplyLayoutToViewHierarchy(UIView* view, BOOL preserveOrigin) {
+  NSCAssert(
+      [NSThread isMainThread],
+      @"Framesetting should only be done on the main thread.");
+
+  const YGLayout* yoga = view.yoga;
+
+  if (!yoga.isIncludedInLayout) {
+    return;
+  }
+
+  YGNodeRef node = yoga.node;
+  const CGPoint topLeft = {
+      YGNodeLayoutGetLeft(node),
+      YGNodeLayoutGetTop(node),
+  };
+
+  const CGPoint bottomRight = {
+      topLeft.x + YGNodeLayoutGetWidth(node),
+      topLeft.y + YGNodeLayoutGetHeight(node),
+  };
+
+  const CGPoint origin = preserveOrigin ? view.frame.origin : CGPointZero;
+  view.frame = (CGRect){
+      .origin =
+          {
+              .x = YGRoundPixelValue(topLeft.x + origin.x),
+              .y = YGRoundPixelValue(topLeft.y + origin.y),
+          },
+      .size =
+          {
+              .width = YGRoundPixelValue(bottomRight.x) -
+                  YGRoundPixelValue(topLeft.x),
+              .height = YGRoundPixelValue(bottomRight.y) -
+                  YGRoundPixelValue(topLeft.y),
+          },
+  };
+
+  if (!yoga.isLeaf) {
+    for (NSUInteger i = 0; i < view.subviews.count; i++) {
+      YGApplyLayoutToViewHierarchy(view.subviews[i], NO);
+    }
+  }
+}
+
+@end

YogaKit/Source/YGLayoutExtensions.swift

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import yoga;
+postfix operator %
+
+extension Int {
+    public static postfix func %(value: Int) -> YGValue {
+        return YGValue(value: Float(value), unit: .percent)
+    }
+}
+
+extension Float {
+    public static postfix func %(value: Float) -> YGValue {
+        return YGValue(value: value, unit: .percent)
+    }
+}
+
+extension CGFloat {
+    public static postfix func %(value: CGFloat) -> YGValue {
+        return YGValue(value: Float(value), unit: .percent)
+    }
+}
+
+extension YGValue : ExpressibleByIntegerLiteral, ExpressibleByFloatLiteral {
+    public init(integerLiteral value: Int) {
+        self = YGValue(value: Float(value), unit: .point)
+    }
+
+    public init(floatLiteral value: Float) {
+        self = YGValue(value: value, unit: .point)
+    }
+
+    public init(_ value: Float) {
+        self = YGValue(value: value, unit: .point)
+    }
+
+    public init(_ value: CGFloat) {
+        self = YGValue(value: Float(value), unit: .point)
+    }
+}

YogaKit/Tests/YogaKitTests.m

@@ -1,162 +1,337 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 #import <XCTest/XCTest.h>
 
 #import <YogaKit/UIView+Yoga.h>
+#import <YogaKit/YGLayout+Private.h>
+#import <yoga/Yoga.h>
 
 @interface YogaKitTests : XCTestCase
 @end
 
 @implementation YogaKitTests
 
-#ifndef TRAVIS_CI
-
-- (void)testNodesAreDeallocedWithSingleView
-{
-  XCTAssertEqual(0, YGNodeGetInstanceCount());
-
-  UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  [view yg_setFlexBasis:1];
-  XCTAssertEqual(1, YGNodeGetInstanceCount());
-  view = nil;
-
-  XCTAssertEqual(0, YGNodeGetInstanceCount());
+- (void)testConfigureLayoutIsNoOpWithNilBlock {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  id block = nil;
+  XCTAssertNoThrow([view configureLayoutWithBlock:block]);
 }
 
-- (void)testNodesAreDeallocedCascade
-{
-  XCTAssertEqual(0, YGNodeGetInstanceCount());
+- (void)testConfigureLayoutBlockWorksWithValidBlock {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  [view configureLayoutWithBlock:^(YGLayout* layout) {
+    XCTAssertNotNil(layout);
+    layout.isEnabled = YES;
+    layout.width = YGPointValue(25);
+  }];
 
-  UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  [view yg_setFlexBasis:1];
+  XCTAssertTrue(view.yoga.isEnabled);
+  XCTAssertEqual(view.yoga.width.value, 25);
+}
 
-  for (int i=0; i<10; i++) {
-    UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
-    [subview yg_setFlexBasis:1];
-    [view addSubview:subview];
+- (void)testNodesAreDeallocedWithSingleView {
+  __weak YGLayout* layoutRef = nil;
+
+  @autoreleasepool {
+    UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+    view.yoga.flexBasis = YGPointValue(1);
+
+    layoutRef = view.yoga;
+    XCTAssertNotNil(layoutRef);
+
+    view = nil;
   }
-  XCTAssertEqual(11, YGNodeGetInstanceCount());
-  view = nil;
 
-  XCTAssertEqual(0, YGNodeGetInstanceCount());
+  XCTAssertNil(layoutRef);
 }
 
-#endif
+- (void)testNodesAreDeallocedCascade {
+  __weak YGLayout* topLayout = nil;
+  __weak YGLayout* subviewLayout = nil;
 
-- (void)testUsesYoga
-{
-  UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  XCTAssertFalse([view yg_usesYoga]);
+  @autoreleasepool {
+    UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+    topLayout = view.yoga;
+    topLayout.flexBasis = YGPointValue(1);
 
-  [view yg_setUsesYoga:YES];
-  XCTAssertTrue([view yg_usesYoga]);
+    UIView* subview = [[UIView alloc] initWithFrame:CGRectZero];
+    subviewLayout = subview.yoga;
+    subviewLayout.flexBasis = YGPointValue(1);
 
-  [view yg_setUsesYoga:NO];
-  XCTAssertFalse([view yg_usesYoga]);
+    view = nil;
+  }
+
+  XCTAssertNil(topLayout);
+  XCTAssertNil(subviewLayout);
 }
 
-- (void)testSizeThatFitsAsserts
-{
-  UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  dispatch_sync(dispatch_queue_create("com.facebook.Yoga.testing", DISPATCH_QUEUE_SERIAL), ^(void){
-    XCTAssertThrows([view yg_intrinsicSize]);
-  });
+- (void)testIsEnabled {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  XCTAssertFalse(view.yoga.isEnabled);
+
+  view.yoga.isEnabled = YES;
+  XCTAssertTrue(view.yoga.isEnabled);
+
+  view.yoga.isEnabled = NO;
+  XCTAssertFalse(view.yoga.isEnabled);
 }
 
-- (void)testSizeThatFitsSmoke
-{
-  UIView *container = [[UIView alloc] initWithFrame:CGRectZero];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
-  [container yg_setAlignItems:YGAlignFlexStart];
+- (void)testSizeThatFitsAsserts {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  dispatch_sync(
+      dispatch_queue_create("com.facebook.Yoga.testing", DISPATCH_QUEUE_SERIAL),
+      ^(void) {
+        XCTAssertThrows(view.yoga.intrinsicSize);
+      });
+}
 
-  UILabel *longTextLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-  longTextLabel.text = @"This is a very very very very very very very very long piece of text.";
+- (void)testSizeThatFitsSmoke {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectZero];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
+  container.yoga.alignItems = YGAlignFlexStart;
+
+  UILabel* longTextLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+  longTextLabel.text =
+      @"This is a very very very very very very very very long piece of text.";
   longTextLabel.lineBreakMode = NSLineBreakByTruncatingTail;
   longTextLabel.numberOfLines = 1;
-  [longTextLabel yg_setUsesYoga:YES];
-  [longTextLabel yg_setFlexShrink:1];
+  longTextLabel.yoga.isEnabled = YES;
+  longTextLabel.yoga.flexShrink = 1;
   [container addSubview:longTextLabel];
 
-  UIView *textBadgeView = [[UIView alloc] initWithFrame:CGRectZero];
-  [textBadgeView yg_setUsesYoga:YES];
-  [textBadgeView yg_setMargin:3.0 forEdge:YGEdgeLeft];
-  [textBadgeView yg_setWidth:10];
-  [textBadgeView yg_setHeight:10];
+  UIView* textBadgeView = [[UIView alloc] initWithFrame:CGRectZero];
+  textBadgeView.yoga.isEnabled = YES;
+  textBadgeView.yoga.margin = YGPointValue(0);
+  textBadgeView.yoga.width = YGPointValue(10);
+  textBadgeView.yoga.height = YGPointValue(10);
   [container addSubview:textBadgeView];
 
-  const CGSize containerSize = [container yg_intrinsicSize];
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(514,21), containerSize), @"Size is actually %@", NSStringFromCGSize(containerSize));
+  const CGSize textBadgeViewSize = textBadgeView.yoga.intrinsicSize;
+  XCTAssertEqual(textBadgeViewSize.height, 10);
+  XCTAssertEqual(textBadgeViewSize.width, 10);
+
+  const CGSize containerSize = container.yoga.intrinsicSize;
+  const CGSize longTextLabelSize = longTextLabel.yoga.intrinsicSize;
+
+  XCTAssertEqual(longTextLabelSize.height, containerSize.height);
+  XCTAssertEqual(
+      longTextLabelSize.width + textBadgeView.yoga.intrinsicSize.width,
+      containerSize.width);
 }
 
-- (void)testFrameAndOriginPlacement
-{
+- (void)testSizeThatFitsEmptyView {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];
+  view.yoga.isEnabled = YES;
+
+  const CGSize viewSize = view.yoga.intrinsicSize;
+  XCTAssertEqual(viewSize.height, 0);
+  XCTAssertEqual(viewSize.width, 0);
+}
+
+- (void)testPreservingOrigin {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 75)];
+  container.yoga.isEnabled = YES;
+
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  view.yoga.isEnabled = YES;
+  view.yoga.flexBasis = YGPointValue(0);
+  view.yoga.flexGrow = 1;
+  [container addSubview:view];
+
+  UIView* view2 = [[UIView alloc] initWithFrame:CGRectZero];
+  view2.yoga.isEnabled = YES;
+  view2.yoga.marginTop = YGPointValue(25);
+  view2.yoga.flexBasis = YGPointValue(0);
+  view2.yoga.flexGrow = 1;
+  [container addSubview:view2];
+
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  XCTAssertEqual(50, view2.frame.origin.y);
+
+  [view2.yoga applyLayoutPreservingOrigin:NO];
+  XCTAssertEqual(25, view2.frame.origin.y);
+}
+
+- (void)testContainerWithFlexibleWidthGetsCorrectlySized {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
+  container.yoga.isEnabled = YES;
+
+  UIView* view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
+  view.yoga.isEnabled = YES;
+  view.yoga.width = YGPointValue(100);
+  view.yoga.height = YGPointValue(100);
+  [container addSubview:view];
+
+  [container.yoga
+      applyLayoutPreservingOrigin:YES
+             dimensionFlexibility:YGDimensionFlexibilityFlexibleWidth];
+  XCTAssertEqual(100, container.frame.size.width);
+  XCTAssertEqual(200, container.frame.size.height);
+}
+
+- (void)testContainerWithFlexibleHeightGetsCorrectlySized {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
+  container.yoga.isEnabled = YES;
+
+  UIView* view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
+  view.yoga.isEnabled = YES;
+  view.yoga.width = YGPointValue(100);
+  view.yoga.height = YGPointValue(100);
+  [container addSubview:view];
+
+  [container.yoga
+      applyLayoutPreservingOrigin:YES
+             dimensionFlexibility:YGDimensionFlexibilityFlexibleHeight];
+  XCTAssertEqual(200, container.frame.size.width);
+  XCTAssertEqual(100, container.frame.size.height);
+}
+
+- (void)testContainerWithFlexibleWidthAndHeightGetsCorrectlySized {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
+  container.yoga.isEnabled = YES;
+
+  UIView* view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
+  view.yoga.isEnabled = YES;
+  view.yoga.width = YGPointValue(100);
+  view.yoga.height = YGPointValue(100);
+  [container addSubview:view];
+
+  [container.yoga
+      applyLayoutPreservingOrigin:YES
+             dimensionFlexibility:YGDimensionFlexibilityFlexibleWidth |
+             YGDimensionFlexibilityFlexibleHeight];
+  XCTAssertEqual(100, container.frame.size.width);
+  XCTAssertEqual(100, container.frame.size.height);
+}
+
+- (void)testMarkingDirtyOnlyWorksOnLeafNodes {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectZero];
+  container.yoga.isEnabled = YES;
+
+  UIView* subview = [[UIView alloc] initWithFrame:CGRectZero];
+  subview.yoga.isEnabled = YES;
+  [container addSubview:subview];
+
+  XCTAssertFalse(container.yoga.isDirty);
+  [container.yoga markDirty];
+  XCTAssertFalse(container.yoga.isDirty);
+
+  XCTAssertFalse(subview.yoga.isDirty);
+  [subview.yoga markDirty];
+  XCTAssertTrue(subview.yoga.isDirty);
+}
+
+- (void)testThatMarkingLeafsAsDirtyWillTriggerASizeRecalculation {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 500, 50)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
+  container.yoga.alignItems = YGAlignFlexStart;
+
+  UILabel* view = [[UILabel alloc] initWithFrame:CGRectZero];
+  view.text = @"This is a short text.";
+  view.numberOfLines = 1;
+  view.yoga.isEnabled = YES;
+  [container addSubview:view];
+
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  CGSize const viewSizeAfterFirstPass = view.frame.size;
+
+  view.text = @"This is a slightly longer text.";
+  XCTAssertTrue(CGSizeEqualToSize(view.frame.size, viewSizeAfterFirstPass));
+
+  [view.yoga markDirty];
+
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  XCTAssertFalse(CGSizeEqualToSize(view.frame.size, viewSizeAfterFirstPass));
+}
+
+- (void)testFrameAndOriginPlacement {
+  // https://www.internalfb.com/intern/test/562950017690956
+  XCTSkip(
+      @"TODO: this test fails with actual dimensions off by 1px from expected");
+
   const CGSize containerSize = CGSizeMake(320, 50);
 
-  UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerSize.width, containerSize.height)];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
+  UIView* container = [[UIView alloc]
+      initWithFrame:CGRectMake(
+                        0, 0, containerSize.width, containerSize.height)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
 
-  for (int i = 0; i < 3; i++) {
-    UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
-    [subview yg_setUsesYoga:YES];
-    [subview yg_setFlexGrow:1];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.flexGrow = 1;
+  [container addSubview:subview1];
 
-    [container addSubview:subview];
-  }
-  [container yg_applyLayout];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.flexGrow = 1;
+  [container addSubview:subview2];
 
-  XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:0].frame, [container.subviews objectAtIndex:1].frame));
-  XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:1].frame, [container.subviews objectAtIndex:2].frame));
-  XCTAssertFalse(CGRectIntersectsRect([container.subviews objectAtIndex:0].frame, [container.subviews objectAtIndex:2].frame));
+  UIView* subview3 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview3.yoga.isEnabled = YES;
+  subview3.yoga.flexGrow = 1;
+  [container addSubview:subview3];
+
+  [container.yoga applyLayoutPreservingOrigin:YES];
+
+  XCTAssertEqualWithAccuracy(
+      subview2.frame.origin.x, CGRectGetMaxX(subview1.frame), FLT_EPSILON);
+  XCTAssertEqualWithAccuracy(
+      subview3.frame.origin.x, CGRectGetMaxX(subview2.frame), FLT_EPSILON);
 
   CGFloat totalWidth = 0;
-  for (UIView *view in container.subviews) {
+  for (UIView* view in container.subviews) {
     totalWidth += view.bounds.size.width;
   }
 
-  XCTAssertEqual(containerSize.width, totalWidth, @"The container's width is %.6f, the subviews take up %.6f", containerSize.width, totalWidth);
+  XCTAssertEqual(
+      containerSize.width,
+      totalWidth,
+      @"The container's width is %.6f, the subviews take up %.6f",
+      containerSize.width,
+      totalWidth);
 }
 
-- (void)testThatLayoutIsCorrectWhenWeSwapViewOrder
-{
+- (void)testThatLayoutIsCorrectWhenWeSwapViewOrder {
   const CGSize containerSize = CGSizeMake(300, 50);
 
-  UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerSize.width, containerSize.height)];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
+  UIView* container = [[UIView alloc]
+      initWithFrame:CGRectMake(
+                        0, 0, containerSize.width, containerSize.height)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
 
-  UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview1 yg_setUsesYoga:YES];
-  [subview1 yg_setFlexGrow:1];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.flexGrow = 1;
   [container addSubview:subview1];
 
-  UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview2 yg_setUsesYoga:YES];
-  [subview2 yg_setFlexGrow:1];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.flexGrow = 1;
   [container addSubview:subview2];
 
-  UIView *subview3 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview3 yg_setUsesYoga:YES];
-  [subview3 yg_setFlexGrow:1];
+  UIView* subview3 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview3.yoga.isEnabled = YES;
+  subview3.yoga.flexGrow = 1;
   [container addSubview:subview3];
 
-  [container yg_applyLayout];
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
   XCTAssertTrue(CGRectEqualToRect(subview1.frame, CGRectMake(0, 0, 100, 50)));
-  XCTAssertTrue(CGRectEqualToRect(subview2.frame, CGRectMake(100, 0, 100, 50)), @"It's actually %@", NSStringFromCGRect(subview2.frame));
+  XCTAssertTrue(CGRectEqualToRect(subview2.frame, CGRectMake(100, 0, 100, 50)));
   XCTAssertTrue(CGRectEqualToRect(subview3.frame, CGRectMake(200, 0, 100, 50)));
 
   [container exchangeSubviewAtIndex:2 withSubviewAtIndex:0];
-  [subview2 yg_setIncludeInLayout:NO];
-  [container yg_applyLayout];
+  subview2.yoga.isIncludedInLayout = NO;
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
   XCTAssertTrue(CGRectEqualToRect(subview3.frame, CGRectMake(0, 0, 150, 50)));
   XCTAssertTrue(CGRectEqualToRect(subview1.frame, CGRectMake(150, 0, 150, 50)));
@@ -165,182 +340,414 @@
   XCTAssertTrue(CGRectEqualToRect(subview2.frame, CGRectMake(100, 0, 100, 50)));
 }
 
-- (void)testThatWeRespectIncludeInLayoutFlag
-{
+- (void)testThatWeRespectIncludeInLayoutFlag {
   const CGSize containerSize = CGSizeMake(300, 50);
 
-  UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, containerSize.width, containerSize.height)];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
+  UIView* container = [[UIView alloc]
+      initWithFrame:CGRectMake(
+                        0, 0, containerSize.width, containerSize.height)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
 
-  UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview1 yg_setUsesYoga:YES];
-  [subview1 yg_setFlexGrow:1];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.flexGrow = 1;
   [container addSubview:subview1];
 
-  UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview2 yg_setUsesYoga:YES];
-  [subview2 yg_setFlexGrow:1];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.flexGrow = 1;
   [container addSubview:subview2];
 
-  UIView *subview3 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview3 yg_setUsesYoga:YES];
-  [subview3 yg_setFlexGrow:1];
+  UIView* subview3 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview3.yoga.isEnabled = YES;
+  subview3.yoga.flexGrow = 1;
   [container addSubview:subview3];
 
-  [container yg_applyLayout];
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
-  for (UIView *view in container.subviews) {
-    XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(100, 50), subview1.bounds.size), @"Actual size is %@", NSStringFromCGSize(view.bounds.size));
+  for (UIView* subview in container.subviews) {
+    XCTAssertEqual(subview.bounds.size.width, 100);
   }
 
-  [subview3 yg_setIncludeInLayout:NO];
-  [container yg_applyLayout];
+  subview3.yoga.isIncludedInLayout = NO;
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(150, 50), subview1.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview1.bounds.size));
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(150, 50), subview2.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview2.bounds.size));
+  XCTAssertEqual(subview1.bounds.size.width, 150);
+  XCTAssertEqual(subview2.bounds.size.width, 150);
 
-  // We don't set the frame to zero, so, it should be set to what it was previously at.
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(100, 50), subview3.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview3.bounds.size));
+  // We don't set the frame to zero, so, it should be set to what it was
+  // previously at.
+  XCTAssertEqual(subview3.bounds.size.width, 100);
 }
 
-- (void)testThatNumberOfChildrenIsCorrectWhenWeIgnoreSubviews
-{
-  UIView *container = [[UIView alloc] initWithFrame:CGRectZero];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
+- (void)testThatNumberOfChildrenIsCorrectWhenWeIgnoreSubviews {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectZero];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
 
-  UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview1 yg_setUsesYoga:YES];
-  [subview1 yg_setIncludeInLayout:NO];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.isIncludedInLayout = NO;
   [container addSubview:subview1];
 
-  UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview2 yg_setUsesYoga:YES];
-  [subview2 yg_setIncludeInLayout:NO];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.isIncludedInLayout = NO;
   [container addSubview:subview2];
 
-  UIView *subview3 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview3 yg_setUsesYoga:YES];
-  [subview3 yg_setIncludeInLayout:YES];
+  UIView* subview3 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview3.yoga.isEnabled = YES;
+  subview3.yoga.isIncludedInLayout = YES;
   [container addSubview:subview3];
 
-  [container yg_applyLayout];
-  XCTAssertEqual(1, [container yg_numberOfChildren]);
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  XCTAssertEqual(container.yoga.numberOfChildren, 1);
 
-  [subview2 yg_setIncludeInLayout:YES];
-  [container yg_applyLayout];
-  XCTAssertEqual(2, [container yg_numberOfChildren]);
+  subview2.yoga.isIncludedInLayout = YES;
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  XCTAssertEqual(container.yoga.numberOfChildren, 2);
 }
 
-- (void)testThatViewNotIncludedInFirstLayoutPassAreIncludedInSecond
-{
-  UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 50)];
-  [container yg_setUsesYoga:YES];
-  [container yg_setFlexDirection:YGFlexDirectionRow];
+- (void)testThatViewNotIncludedInFirstLayoutPassAreIncludedInSecond {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 50)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionRow;
 
-  UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview1 yg_setUsesYoga:YES];
-  [subview1 yg_setFlexGrow:1];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.flexGrow = 1;
   [container addSubview:subview1];
 
-  UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview2 yg_setUsesYoga:YES];
-  [subview2 yg_setFlexGrow:1];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.flexGrow = 1;
   [container addSubview:subview2];
 
-  UIView *subview3 = [[UIView alloc] initWithFrame:CGRectZero];
-  [subview3 yg_setUsesYoga:YES];
-  [subview3 yg_setFlexGrow:1];
-  [subview3 yg_setIncludeInLayout:NO];
+  UIView* subview3 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview3.yoga.isEnabled = YES;
+  subview3.yoga.flexGrow = 1;
+  subview3.yoga.isIncludedInLayout = NO;
   [container addSubview:subview3];
 
-  [container yg_applyLayout];
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(150, 50), subview1.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview1.bounds.size));
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(150, 50), subview2.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview2.bounds.size));
-  XCTAssertTrue(CGSizeEqualToSize(CGSizeZero, subview3.bounds.size), @"Actual size %@", NSStringFromCGSize(subview3.bounds.size));
+  XCTAssertEqual(subview1.bounds.size.width, 150);
+  XCTAssertEqual(subview2.bounds.size.width, 150);
+  XCTAssertEqual(subview3.bounds.size.width, 0);
 
-  [subview3 yg_setIncludeInLayout:YES];
-  [container yg_applyLayout];
-  for (UIView *view in container.subviews) {
-    XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(100, 50), subview1.bounds.size), @"Actual size is %@", NSStringFromCGSize(view.bounds.size));
-  }
+  subview3.yoga.isIncludedInLayout = YES;
+  [container.yoga applyLayoutPreservingOrigin:YES];
+
+  XCTAssertEqual(subview1.bounds.size.width, 100);
+  XCTAssertEqual(subview2.bounds.size.width, 100);
+  XCTAssertEqual(subview3.bounds.size.width, 100);
 }
 
-- (void)testyg_isLeafFlag
-{
-  UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  XCTAssertTrue(view.yg_isLeaf);
+- (void)testIsLeafFlag {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+  XCTAssertTrue(view.yoga.isLeaf);
 
-  for (int i=0; i<10; i++) {
-    UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
+  for (int i = 0; i < 10; i++) {
+    UIView* subview = [[UIView alloc] initWithFrame:CGRectZero];
     [view addSubview:subview];
   }
-  XCTAssertTrue(view.yg_isLeaf);
+  XCTAssertTrue(view.yoga.isLeaf);
 
-  [view yg_setUsesYoga:YES];
-  [view yg_setWidth:50.0];
-  XCTAssertTrue(view.yg_isLeaf);
+  view.yoga.isEnabled = YES;
+  view.yoga.width = YGPointValue(50);
+  XCTAssertTrue(view.yoga.isLeaf);
 
-  UIView *const subview = view.subviews[0];
-  [subview yg_setUsesYoga:YES];
-  [subview yg_setWidth:50.0];
-  XCTAssertFalse(view.yg_isLeaf);
+  UIView* const subview = view.subviews[0];
+  subview.yoga.isEnabled = YES;
+  subview.yoga.width = YGPointValue(50);
+  XCTAssertFalse(view.yoga.isLeaf);
 }
 
-- (void)testThatWeCorrectlyAttachNestedViews
-{
-    UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 50)];
-    [container yg_setUsesYoga:YES];
-    [container yg_setFlexDirection:YGFlexDirectionColumn];
+- (void)testThatWeCorrectlyAttachNestedViews {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 50)];
+  container.yoga.isEnabled = YES;
+  container.yoga.flexDirection = YGFlexDirectionColumn;
 
-    UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
-    [subview1 yg_setUsesYoga:YES];
-    [subview1 yg_setWidth:100];
-    [subview1 yg_setFlexGrow:1];
-    [subview1 yg_setFlexDirection:YGFlexDirectionColumn];
-    [container addSubview:subview1];
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  subview1.yoga.width = YGPointValue(100);
+  subview1.yoga.flexGrow = 1;
+  subview1.yoga.flexDirection = YGFlexDirectionColumn;
+  [container addSubview:subview1];
 
-    UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
-    [subview2 yg_setUsesYoga:YES];
-    [subview2 yg_setWidth:150];
-    [subview2 yg_setFlexGrow:1];
-    [subview2 yg_setFlexDirection:YGFlexDirectionColumn];
-    [container addSubview:subview2];
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  subview2.yoga.width = YGPointValue(150);
+  subview2.yoga.flexGrow = 1;
+  subview2.yoga.flexDirection = YGFlexDirectionColumn;
+  [container addSubview:subview2];
 
-    for (UIView *view in @[subview1, subview2]) {
-        UIView *someView = [[UIView alloc] initWithFrame:CGRectZero];
-        [someView yg_setUsesYoga:YES];
-        [someView yg_setFlexGrow:1];
-        [view addSubview:someView];
-    }
-    [container yg_applyLayout];
+  for (UIView* view in @[ subview1, subview2 ]) {
+    UIView* someView = [[UIView alloc] initWithFrame:CGRectZero];
+    someView.yoga.isEnabled = YES;
+    someView.yoga.flexGrow = 1;
+    [view addSubview:someView];
+  }
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
-    // Add the same amount of new views, reapply layout.
-    for (UIView *view in @[subview1, subview2]) {
-        UIView *someView = [[UIView alloc] initWithFrame:CGRectZero];
-        [someView yg_setUsesYoga:YES];
-        [someView yg_setFlexGrow:1];
-        [view addSubview:someView];
-    }
-    [container yg_applyLayout];
+  // Add the same amount of new views, reapply layout.
+  for (UIView* view in @[ subview1, subview2 ]) {
+    UIView* someView = [[UIView alloc] initWithFrame:CGRectZero];
+    someView.yoga.isEnabled = YES;
+    someView.yoga.flexGrow = 1;
+    [view addSubview:someView];
+  }
+  [container.yoga applyLayoutPreservingOrigin:YES];
 
-    XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(100, 25), subview1.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview1.bounds.size));
-    for (UIView *subview in subview1.subviews) {
-        const CGSize subviewSize = subview.bounds.size;
-        XCTAssertFalse(CGSizeEqualToSize(CGSizeZero, subviewSize));
-        XCTAssertFalse(isnan(subviewSize.height));
-        XCTAssertFalse(isnan(subviewSize.width));
-    }
+  XCTAssertEqual(subview1.bounds.size.width, 100);
+  XCTAssertEqual(subview1.bounds.size.height, 25);
+  for (UIView* subview in subview1.subviews) {
+    const CGSize subviewSize = subview.bounds.size;
+    XCTAssertNotEqual(subviewSize.width, 0);
+    XCTAssertNotEqual(subviewSize.height, 0);
+    XCTAssertFalse(isnan(subviewSize.height));
+    XCTAssertFalse(isnan(subviewSize.width));
+  }
 
-    XCTAssertTrue(CGSizeEqualToSize(CGSizeMake(150, 25), subview2.bounds.size), @"Actual size is %@", NSStringFromCGSize(subview2.bounds.size));
-    for (UIView *subview in subview2.subviews) {
-        const CGSize subviewSize = subview.bounds.size;
-        XCTAssertFalse(CGSizeEqualToSize(CGSizeZero, subview.bounds.size));
-        XCTAssertFalse(isnan(subviewSize.height));
-        XCTAssertFalse(isnan(subviewSize.width));
-    }
+  XCTAssertEqual(subview2.bounds.size.width, 150);
+  XCTAssertEqual(subview2.bounds.size.height, 25);
+  for (UIView* subview in subview2.subviews) {
+    const CGSize subviewSize = subview.bounds.size;
+    XCTAssertNotEqual(subviewSize.width, 0);
+    XCTAssertNotEqual(subviewSize.height, 0);
+    XCTAssertFalse(isnan(subviewSize.height));
+    XCTAssertFalse(isnan(subviewSize.width));
+  }
+}
+
+- (void)testThatANonLeafNodeCanBecomeALeafNode {
+  UIView* container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 50)];
+  container.yoga.isEnabled = YES;
+
+  UIView* subview1 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview1.yoga.isEnabled = YES;
+  [container addSubview:subview1];
+
+  UIView* subview2 = [[UIView alloc] initWithFrame:CGRectZero];
+  subview2.yoga.isEnabled = YES;
+  [subview1 addSubview:subview2];
+
+  [container.yoga applyLayoutPreservingOrigin:YES];
+  [subview2 removeFromSuperview];
+  [container.yoga applyLayoutPreservingOrigin:YES];
+}
+
+- (void)testPointPercent {
+  XCTAssertEqual(YGPointValue(1).value, 1);
+  XCTAssertEqual(YGPointValue(1).unit, YGUnitPoint);
+  XCTAssertEqual(YGPercentValue(2).value, 2);
+  XCTAssertEqual(YGPercentValue(2).unit, YGUnitPercent);
+}
+
+- (void)testPositionalPropertiesWork {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+
+  view.yoga.left = YGPointValue(1);
+  XCTAssertEqual(view.yoga.left.value, 1);
+  XCTAssertEqual(view.yoga.left.unit, YGUnitPoint);
+  view.yoga.left = YGPercentValue(2);
+  XCTAssertEqual(view.yoga.left.value, 2);
+  XCTAssertEqual(view.yoga.left.unit, YGUnitPercent);
+
+  view.yoga.right = YGPointValue(3);
+  XCTAssertEqual(view.yoga.right.value, 3);
+  XCTAssertEqual(view.yoga.right.unit, YGUnitPoint);
+  view.yoga.right = YGPercentValue(4);
+  XCTAssertEqual(view.yoga.right.value, 4);
+  XCTAssertEqual(view.yoga.right.unit, YGUnitPercent);
+
+  view.yoga.top = YGPointValue(5);
+  XCTAssertEqual(view.yoga.top.value, 5);
+  XCTAssertEqual(view.yoga.top.unit, YGUnitPoint);
+  view.yoga.top = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.top.value, 6);
+  XCTAssertEqual(view.yoga.top.unit, YGUnitPercent);
+
+  view.yoga.bottom = YGPointValue(7);
+  XCTAssertEqual(view.yoga.bottom.value, 7);
+  XCTAssertEqual(view.yoga.bottom.unit, YGUnitPoint);
+  view.yoga.bottom = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.bottom.value, 8);
+  XCTAssertEqual(view.yoga.bottom.unit, YGUnitPercent);
+
+  view.yoga.start = YGPointValue(9);
+  XCTAssertEqual(view.yoga.start.value, 9);
+  XCTAssertEqual(view.yoga.start.unit, YGUnitPoint);
+  view.yoga.start = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.start.value, 10);
+  XCTAssertEqual(view.yoga.start.unit, YGUnitPercent);
+
+  view.yoga.end = YGPointValue(11);
+  XCTAssertEqual(view.yoga.end.value, 11);
+  XCTAssertEqual(view.yoga.end.unit, YGUnitPoint);
+  view.yoga.end = YGPercentValue(12);
+  XCTAssertEqual(view.yoga.end.value, 12);
+  XCTAssertEqual(view.yoga.end.unit, YGUnitPercent);
+}
+
+- (void)testMarginPropertiesWork {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+
+  view.yoga.margin = YGPointValue(1);
+  XCTAssertEqual(view.yoga.margin.value, 1);
+  XCTAssertEqual(view.yoga.margin.unit, YGUnitPoint);
+  view.yoga.margin = YGPercentValue(2);
+  XCTAssertEqual(view.yoga.margin.value, 2);
+  XCTAssertEqual(view.yoga.margin.unit, YGUnitPercent);
+
+  view.yoga.marginHorizontal = YGPointValue(3);
+  XCTAssertEqual(view.yoga.marginHorizontal.value, 3);
+  XCTAssertEqual(view.yoga.marginHorizontal.unit, YGUnitPoint);
+  view.yoga.marginHorizontal = YGPercentValue(4);
+  XCTAssertEqual(view.yoga.marginHorizontal.value, 4);
+  XCTAssertEqual(view.yoga.marginHorizontal.unit, YGUnitPercent);
+
+  view.yoga.marginVertical = YGPointValue(5);
+  XCTAssertEqual(view.yoga.marginVertical.value, 5);
+  XCTAssertEqual(view.yoga.marginVertical.unit, YGUnitPoint);
+  view.yoga.marginVertical = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.marginVertical.value, 6);
+  XCTAssertEqual(view.yoga.marginVertical.unit, YGUnitPercent);
+
+  view.yoga.marginLeft = YGPointValue(7);
+  XCTAssertEqual(view.yoga.marginLeft.value, 7);
+  XCTAssertEqual(view.yoga.marginLeft.unit, YGUnitPoint);
+  view.yoga.marginLeft = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.marginLeft.value, 8);
+  XCTAssertEqual(view.yoga.marginLeft.unit, YGUnitPercent);
+
+  view.yoga.marginRight = YGPointValue(9);
+  XCTAssertEqual(view.yoga.marginRight.value, 9);
+  XCTAssertEqual(view.yoga.marginRight.unit, YGUnitPoint);
+  view.yoga.marginRight = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.marginRight.value, 10);
+  XCTAssertEqual(view.yoga.marginRight.unit, YGUnitPercent);
+
+  view.yoga.marginTop = YGPointValue(11);
+  XCTAssertEqual(view.yoga.marginTop.value, 11);
+  XCTAssertEqual(view.yoga.marginTop.unit, YGUnitPoint);
+  view.yoga.marginTop = YGPercentValue(12);
+  XCTAssertEqual(view.yoga.marginTop.value, 12);
+  XCTAssertEqual(view.yoga.marginTop.unit, YGUnitPercent);
+
+  view.yoga.marginBottom = YGPointValue(13);
+  XCTAssertEqual(view.yoga.marginBottom.value, 13);
+  XCTAssertEqual(view.yoga.marginBottom.unit, YGUnitPoint);
+  view.yoga.marginBottom = YGPercentValue(14);
+  XCTAssertEqual(view.yoga.marginBottom.value, 14);
+  XCTAssertEqual(view.yoga.marginBottom.unit, YGUnitPercent);
+
+  view.yoga.marginStart = YGPointValue(15);
+  XCTAssertEqual(view.yoga.marginStart.value, 15);
+  XCTAssertEqual(view.yoga.marginStart.unit, YGUnitPoint);
+  view.yoga.marginStart = YGPercentValue(16);
+  XCTAssertEqual(view.yoga.marginStart.value, 16);
+  XCTAssertEqual(view.yoga.marginStart.unit, YGUnitPercent);
+
+  view.yoga.marginEnd = YGPointValue(17);
+  XCTAssertEqual(view.yoga.marginEnd.value, 17);
+  XCTAssertEqual(view.yoga.marginEnd.unit, YGUnitPoint);
+  view.yoga.marginEnd = YGPercentValue(18);
+  XCTAssertEqual(view.yoga.marginEnd.value, 18);
+  XCTAssertEqual(view.yoga.marginEnd.unit, YGUnitPercent);
+}
+
+- (void)testPaddingPropertiesWork {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+
+  view.yoga.padding = YGPointValue(1);
+  XCTAssertEqual(view.yoga.padding.value, 1);
+  XCTAssertEqual(view.yoga.padding.unit, YGUnitPoint);
+  view.yoga.padding = YGPercentValue(2);
+  XCTAssertEqual(view.yoga.padding.value, 2);
+  XCTAssertEqual(view.yoga.padding.unit, YGUnitPercent);
+
+  view.yoga.paddingHorizontal = YGPointValue(3);
+  XCTAssertEqual(view.yoga.paddingHorizontal.value, 3);
+  XCTAssertEqual(view.yoga.paddingHorizontal.unit, YGUnitPoint);
+  view.yoga.paddingHorizontal = YGPercentValue(4);
+  XCTAssertEqual(view.yoga.paddingHorizontal.value, 4);
+  XCTAssertEqual(view.yoga.paddingHorizontal.unit, YGUnitPercent);
+
+  view.yoga.paddingVertical = YGPointValue(5);
+  XCTAssertEqual(view.yoga.paddingVertical.value, 5);
+  XCTAssertEqual(view.yoga.paddingVertical.unit, YGUnitPoint);
+  view.yoga.paddingVertical = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.paddingVertical.value, 6);
+  XCTAssertEqual(view.yoga.paddingVertical.unit, YGUnitPercent);
+
+  view.yoga.paddingLeft = YGPointValue(7);
+  XCTAssertEqual(view.yoga.paddingLeft.value, 7);
+  XCTAssertEqual(view.yoga.paddingLeft.unit, YGUnitPoint);
+  view.yoga.paddingLeft = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.paddingLeft.value, 8);
+  XCTAssertEqual(view.yoga.paddingLeft.unit, YGUnitPercent);
+
+  view.yoga.paddingRight = YGPointValue(9);
+  XCTAssertEqual(view.yoga.paddingRight.value, 9);
+  XCTAssertEqual(view.yoga.paddingRight.unit, YGUnitPoint);
+  view.yoga.paddingRight = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.paddingRight.value, 10);
+  XCTAssertEqual(view.yoga.paddingRight.unit, YGUnitPercent);
+
+  view.yoga.paddingTop = YGPointValue(11);
+  XCTAssertEqual(view.yoga.paddingTop.value, 11);
+  XCTAssertEqual(view.yoga.paddingTop.unit, YGUnitPoint);
+  view.yoga.paddingTop = YGPercentValue(12);
+  XCTAssertEqual(view.yoga.paddingTop.value, 12);
+  XCTAssertEqual(view.yoga.paddingTop.unit, YGUnitPercent);
+
+  view.yoga.paddingBottom = YGPointValue(13);
+  XCTAssertEqual(view.yoga.paddingBottom.value, 13);
+  XCTAssertEqual(view.yoga.paddingBottom.unit, YGUnitPoint);
+  view.yoga.paddingBottom = YGPercentValue(14);
+  XCTAssertEqual(view.yoga.paddingBottom.value, 14);
+  XCTAssertEqual(view.yoga.paddingBottom.unit, YGUnitPercent);
+
+  view.yoga.paddingStart = YGPointValue(15);
+  XCTAssertEqual(view.yoga.paddingStart.value, 15);
+  XCTAssertEqual(view.yoga.paddingStart.unit, YGUnitPoint);
+  view.yoga.paddingStart = YGPercentValue(16);
+  XCTAssertEqual(view.yoga.paddingStart.value, 16);
+  XCTAssertEqual(view.yoga.paddingStart.unit, YGUnitPercent);
+
+  view.yoga.paddingEnd = YGPointValue(17);
+  XCTAssertEqual(view.yoga.paddingEnd.value, 17);
+  XCTAssertEqual(view.yoga.paddingEnd.unit, YGUnitPoint);
+  view.yoga.paddingEnd = YGPercentValue(18);
+  XCTAssertEqual(view.yoga.paddingEnd.value, 18);
+  XCTAssertEqual(view.yoga.paddingEnd.unit, YGUnitPercent);
+}
+
+- (void)testBorderWidthPropertiesWork {
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
+
+  view.yoga.borderWidth = 1;
+  XCTAssertEqual(view.yoga.borderWidth, 1);
+
+  view.yoga.borderLeftWidth = 2;
+  XCTAssertEqual(view.yoga.borderLeftWidth, 2);
+
+  view.yoga.borderRightWidth = 3;
+  XCTAssertEqual(view.yoga.borderRightWidth, 3);
+
+  view.yoga.borderTopWidth = 4;
+  XCTAssertEqual(view.yoga.borderTopWidth, 4);
+
+  view.yoga.borderBottomWidth = 5;
+  XCTAssertEqual(view.yoga.borderBottomWidth, 5);
+
+  view.yoga.borderStartWidth = 6;
+  XCTAssertEqual(view.yoga.borderStartWidth, 6);
+
+  view.yoga.borderEndWidth = 7;
+  XCTAssertEqual(view.yoga.borderEndWidth, 7);
 }
 
 @end

YogaKit/UIView+Yoga.h

@@ -1,77 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import <UIKit/UIKit.h>
-#import <yoga/Yoga.h>
-
-@interface UIView (Yoga)
-
-/**
-  The property that decides if we should include this view when calculating layout. Defaults to YES.
- */
-@property (nonatomic, readwrite, assign, setter=yg_setIncludeInLayout:) BOOL yg_includeInLayout;
-
-/**
- The property that decides during layout/sizing whether or not yg_* properties should be applied. Defaults to NO.
- */
-@property (nonatomic, readwrite, assign, setter=yg_setUsesYoga:) BOOL yg_usesYoga;
-
-- (void)yg_setDirection:(YGDirection)direction;
-- (void)yg_setFlexDirection:(YGFlexDirection)flexDirection;
-- (void)yg_setJustifyContent:(YGJustify)justifyContent;
-- (void)yg_setAlignContent:(YGAlign)alignContent;
-- (void)yg_setAlignItems:(YGAlign)alignItems;
-- (void)yg_setAlignSelf:(YGAlign)alignSelf;
-- (void)yg_setPositionType:(YGPositionType)positionType;
-- (void)yg_setFlexWrap:(YGWrap)flexWrap;
-
-- (void)yg_setFlexGrow:(CGFloat)flexGrow;
-- (void)yg_setFlexShrink:(CGFloat)flexShrink;
-- (void)yg_setFlexBasis:(CGFloat)flexBasis;
-
-- (void)yg_setPosition:(CGFloat)position forEdge:(YGEdge)edge;
-- (void)yg_setMargin:(CGFloat)margin forEdge:(YGEdge)edge;
-- (void)yg_setPadding:(CGFloat)padding forEdge:(YGEdge)edge;
-
-- (void)yg_setWidth:(CGFloat)width;
-- (void)yg_setHeight:(CGFloat)height;
-- (void)yg_setMinWidth:(CGFloat)minWidth;
-- (void)yg_setMinHeight:(CGFloat)minHeight;
-- (void)yg_setMaxWidth:(CGFloat)maxWidth;
-- (void)yg_setMaxHeight:(CGFloat)maxHeight;
-
-// Yoga specific properties, not compatible with flexbox specification
-- (void)yg_setAspectRatio:(CGFloat)aspectRatio;
-
-/**
- Get the resolved direction of this node. This won't be YGDirectionInherit
- */
-- (YGDirection)yg_resolvedDirection;
-
-/**
- Perform a layout calculation and update the frames of the views in the hierarchy with the results
- */
-- (void)yg_applyLayout;
-
-/**
- Returns the size of the view if no constraints were given. This could equivalent to calling [self sizeThatFits:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)];
- */
-- (CGSize)yg_intrinsicSize;
-
-/**
- Returns the number of children that are using Flexbox.
- */
-- (NSUInteger)yg_numberOfChildren;
-
-/**
- Return a BOOL indiciating whether or not we this node contains any subviews that are included in Yoga's layout.
- */
-- (BOOL)yg_isLeaf;
-
-@end

YogaKit/UIView+Yoga.m

@@ -1,397 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import "UIView+Yoga.h"
-
-#import <objc/runtime.h>
-
-@interface YGNodeBridge : NSObject
-@property (nonatomic, assign, readonly) YGNodeRef cnode;
-@end
-
-@implementation YGNodeBridge
-
-+ (void)initialize
-{
-  YGSetExperimentalFeatureEnabled(YGExperimentalFeatureWebFlexBasis, true);
-}
-
-- (instancetype)init
-{
-  if ([super init]) {
-    _cnode = YGNodeNew();
-  }
-
-  return self;
-}
-
-- (void)dealloc
-{
-  YGNodeFree(_cnode);
-}
-@end
-
-@implementation UIView (Yoga)
-
-- (BOOL)yg_usesYoga
-{
-  NSNumber *usesYoga = objc_getAssociatedObject(self, @selector(yg_usesYoga));
-  return [usesYoga boolValue];
-}
-
-- (BOOL)yg_includeInLayout
-{
-  NSNumber *includeInLayout = objc_getAssociatedObject(self, @selector(yg_includeInLayout));
-  return (includeInLayout != nil) ? [includeInLayout boolValue] : YES;
-}
-
-- (NSUInteger)yg_numberOfChildren
-{
-  return YGNodeGetChildCount([self ygNode]);
-}
-
-- (BOOL)yg_isLeaf
-{
-  NSAssert([NSThread isMainThread], @"This method must be called on the main thread.");
-  if ([self yg_usesYoga]) {
-      for (UIView *subview in self.subviews) {
-          if ([subview yg_usesYoga] && [subview yg_includeInLayout]) {
-              return NO;
-          }
-      }
-  }
-
-  return YES;
-}
-
-#pragma mark - Setters
-
-- (void)yg_setIncludeInLayout:(BOOL)includeInLayout
-{
-  objc_setAssociatedObject(
-    self,
-    @selector(yg_includeInLayout),
-    @(includeInLayout),
-    OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-}
-
-- (void)yg_setUsesYoga:(BOOL)enabled
-{
-  objc_setAssociatedObject(
-    self,
-    @selector(yg_usesYoga),
-    @(enabled),
-    OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-}
-
-- (void)yg_setDirection:(YGDirection)direction
-{
-  YGNodeStyleSetDirection([self ygNode], direction);
-}
-
-- (void)yg_setFlexDirection:(YGFlexDirection)flexDirection
-{
-  YGNodeStyleSetFlexDirection([self ygNode], flexDirection);
-}
-
-- (void)yg_setJustifyContent:(YGJustify)justifyContent
-{
-  YGNodeStyleSetJustifyContent([self ygNode], justifyContent);
-}
-
-- (void)yg_setAlignContent:(YGAlign)alignContent
-{
-  YGNodeStyleSetAlignContent([self ygNode], alignContent);
-}
-
-- (void)yg_setAlignItems:(YGAlign)alignItems
-{
-  YGNodeStyleSetAlignItems([self ygNode], alignItems);
-}
-
-- (void)yg_setAlignSelf:(YGAlign)alignSelf
-{
-  YGNodeStyleSetAlignSelf([self ygNode], alignSelf);
-}
-
-- (void)yg_setPositionType:(YGPositionType)positionType
-{
-  YGNodeStyleSetPositionType([self ygNode], positionType);
-}
-
-- (void)yg_setFlexWrap:(YGWrap)flexWrap
-{
-  YGNodeStyleSetFlexWrap([self ygNode], flexWrap);
-}
-
-- (void)yg_setFlexGrow:(CGFloat)flexGrow
-{
-  YGNodeStyleSetFlexGrow([self ygNode], flexGrow);
-}
-
-- (void)yg_setFlexShrink:(CGFloat)flexShrink
-{
-  YGNodeStyleSetFlexShrink([self ygNode], flexShrink);
-}
-
-- (void)yg_setFlexBasis:(CGFloat)flexBasis
-{
-  YGNodeStyleSetFlexBasis([self ygNode], flexBasis);
-}
-
-- (void)yg_setPosition:(CGFloat)position forEdge:(YGEdge)edge
-{
-  YGNodeStyleSetPosition([self ygNode], edge, position);
-}
-
-- (void)yg_setMargin:(CGFloat)margin forEdge:(YGEdge)edge
-{
-  YGNodeStyleSetMargin([self ygNode], edge, margin);
-}
-
-- (void)yg_setPadding:(CGFloat)padding forEdge:(YGEdge)edge
-{
-  YGNodeStyleSetPadding([self ygNode], edge, padding);
-}
-
-- (void)yg_setWidth:(CGFloat)width
-{
-  YGNodeStyleSetWidth([self ygNode], width);
-}
-
-- (void)yg_setHeight:(CGFloat)height
-{
-  YGNodeStyleSetHeight([self ygNode], height);
-}
-
-- (void)yg_setMinWidth:(CGFloat)minWidth
-{
-  YGNodeStyleSetMinWidth([self ygNode], minWidth);
-}
-
-- (void)yg_setMinHeight:(CGFloat)minHeight
-{
-  YGNodeStyleSetMinHeight([self ygNode], minHeight);
-}
-
-- (void)yg_setMaxWidth:(CGFloat)maxWidth
-{
-  YGNodeStyleSetMaxWidth([self ygNode], maxWidth);
-}
-
-- (void)yg_setMaxHeight:(CGFloat)maxHeight
-{
-  YGNodeStyleSetMaxHeight([self ygNode], maxHeight);
-}
-
-- (void)yg_setAspectRatio:(CGFloat)aspectRatio
-{
-  YGNodeStyleSetAspectRatio([self ygNode], aspectRatio);
-}
-
-#pragma mark - Layout and Sizing
-
-- (YGDirection)yg_resolvedDirection
-{
-  return YGNodeLayoutGetDirection([self ygNode]);
-}
-
-- (void)yg_applyLayout
-{
-  [self calculateLayoutWithSize:self.bounds.size];
-  YGApplyLayoutToViewHierarchy(self);
-}
-
-- (CGSize)yg_intrinsicSize
-{
-  const CGSize constrainedSize = {
-      .width = YGUndefined,
-      .height = YGUndefined,
-  };
-  return [self calculateLayoutWithSize:constrainedSize];
-}
-
-#pragma mark - Private
-
-- (YGNodeRef)ygNode
-{
-  YGNodeBridge *node = objc_getAssociatedObject(self, @selector(ygNode));
-  if (!node) {
-    node = [YGNodeBridge new];
-    YGNodeSetContext(node.cnode, (__bridge void *) self);
-    objc_setAssociatedObject(self, @selector(ygNode), node, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-  }
-
-  return node.cnode;
-}
-
-- (CGSize)calculateLayoutWithSize:(CGSize)size
-{
-  NSAssert([NSThread isMainThread], @"YG Layout calculation must be done on main.");
-  NSAssert([self yg_usesYoga], @"YG Layout is not enabled for this view.");
-
-  YGAttachNodesFromViewHierachy(self);
-
-  const YGNodeRef node = [self ygNode];
-  YGNodeCalculateLayout(
-    node,
-    size.width,
-    size.height,
-    YGNodeStyleGetDirection(node));
-
-  return (CGSize) {
-    .width = YGNodeLayoutGetWidth(node),
-    .height = YGNodeLayoutGetHeight(node),
-  };
-}
-
-static YGSize YGMeasureView(
-  YGNodeRef node,
-  float width,
-  YGMeasureMode widthMode,
-  float height,
-  YGMeasureMode heightMode)
-{
-  const CGFloat constrainedWidth = (widthMode == YGMeasureModeUndefined) ? CGFLOAT_MAX : width;
-  const CGFloat constrainedHeight = (heightMode == YGMeasureModeUndefined) ? CGFLOAT_MAX: height;
-
-  UIView *view = (__bridge UIView*) YGNodeGetContext(node);
-  const CGSize sizeThatFits = [view sizeThatFits:(CGSize) {
-    .width = constrainedWidth,
-    .height = constrainedHeight,
-  }];
-
-  return (YGSize) {
-    .width = YGSanitizeMeasurement(constrainedWidth, sizeThatFits.width, widthMode),
-    .height = YGSanitizeMeasurement(constrainedHeight, sizeThatFits.height, heightMode),
-  };
-}
-
-static CGFloat YGSanitizeMeasurement(
-  CGFloat constrainedSize,
-  CGFloat measuredSize,
-  YGMeasureMode measureMode)
-{
-  CGFloat result;
-  if (measureMode == YGMeasureModeExactly) {
-    result = constrainedSize;
-  } else if (measureMode == YGMeasureModeAtMost) {
-    result = MIN(constrainedSize, measuredSize);
-  } else {
-    result = measuredSize;
-  }
-
-  return result;
-}
-
-static BOOL YGNodeHasExactSameChildren(const YGNodeRef node, NSArray<UIView *> *subviews)
-{
-  if (YGNodeGetChildCount(node) != subviews.count) {
-    return NO;
-  }
-
-  for (int i=0; i<subviews.count; i++) {
-    if (YGNodeGetChild(node, i) != subviews[i].ygNode) {
-      return NO;
-    }
-  }
-
-  return YES;
-}
-
-static void YGAttachNodesFromViewHierachy(UIView *const view)
-{
-  const YGNodeRef node = [view ygNode];
-
-  // Only leaf nodes should have a measure function
-  if (view.yg_isLeaf) {
-    YGNodeSetMeasureFunc(node, YGMeasureView);
-    YGRemoveAllChildren(node);
-  } else {
-    YGNodeSetMeasureFunc(node, NULL);
-
-    NSMutableArray<UIView *> *subviewsToInclude = [[NSMutableArray alloc] initWithCapacity:view.subviews.count];
-    for (UIView *subview in view.subviews) {
-      if ([subview yg_includeInLayout]) {
-        [subviewsToInclude addObject:subview];
-      }
-    }
-
-    if (!YGNodeHasExactSameChildren(node, subviewsToInclude)) {
-        YGRemoveAllChildren(node);
-        for (int i=0; i<subviewsToInclude.count; i++) {
-            YGNodeInsertChild(node, [subviewsToInclude[i] ygNode], i);
-        }
-    }
-
-    for (UIView *const subview in subviewsToInclude) {
-        YGAttachNodesFromViewHierachy(subview);
-    }
-  }
-}
-
-static void YGRemoveAllChildren(const YGNodeRef node)
-{
-  if (node == NULL) {
-      return;
-  }
-
-  while (YGNodeGetChildCount(node) > 0) {
-    YGNodeRemoveChild(node, YGNodeGetChild(node, YGNodeGetChildCount(node) - 1));
-  }
-}
-
-static CGFloat YGRoundPixelValue(CGFloat value)
-{
-  static CGFloat scale;
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^(){
-    scale = [UIScreen mainScreen].scale;
-  });
-
-  return round(value * scale) / scale;
-}
-
-static void YGApplyLayoutToViewHierarchy(UIView *view)
-{
-  NSCAssert([NSThread isMainThread], @"Framesetting should only be done on the main thread.");
-  if (![view yg_includeInLayout]) {
-     return;
-  }
-
-  YGNodeRef node = [view ygNode];
-  const CGPoint topLeft = {
-    YGNodeLayoutGetLeft(node),
-    YGNodeLayoutGetTop(node),
-  };
-
-  const CGPoint bottomRight = {
-    topLeft.x + YGNodeLayoutGetWidth(node),
-    topLeft.y + YGNodeLayoutGetHeight(node),
-  };
-
-  view.frame = (CGRect) {
-    .origin = {
-      .x = YGRoundPixelValue(topLeft.x),
-      .y = YGRoundPixelValue(topLeft.y),
-    },
-    .size = {
-      .width = YGRoundPixelValue(bottomRight.x) - YGRoundPixelValue(topLeft.x),
-      .height = YGRoundPixelValue(bottomRight.y) - YGRoundPixelValue(topLeft.y),
-    },
-  };
-
-  if (!view.yg_isLeaf) {
-    for (NSUInteger i=0; i<view.subviews.count; i++) {
-      YGApplyLayoutToViewHierarchy(view.subviews[i]);
-    }
-  }
-}
-
-@end

YogaKit/YogaKitSample/Podfile

@@ -0,0 +1,17 @@
+use_frameworks!
+
+platform :ios, "13.4"
+
+target 'YogaKitSample' do
+  pod 'YogaKit', :path => '../../YogaKit.podspec'
+  pod 'Yoga', :path => '../../Yoga.podspec'
+  pod 'IGListKit', '~> 4.0.0'
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.4'
+    end
+  end
+end

YogaKit/YogaKitSample/Podfile.lock

@@ -0,0 +1,33 @@
+PODS:
+  - IGListDiffKit (4.0.0)
+  - IGListKit (4.0.0):
+    - IGListDiffKit (= 4.0.0)
+  - Yoga (2.0.0-beta.1)
+  - YogaKit (2.0.0-beta.1):
+    - Yoga (~> 2.0.0-beta.1)
+
+DEPENDENCIES:
+  - IGListKit (~> 4.0.0)
+  - Yoga (from `../../Yoga.podspec`)
+  - YogaKit (from `../../YogaKit.podspec`)
+
+SPEC REPOS:
+  trunk:
+    - IGListDiffKit
+    - IGListKit
+
+EXTERNAL SOURCES:
+  Yoga:
+    :path: "../../Yoga.podspec"
+  YogaKit:
+    :path: "../../YogaKit.podspec"
+
+SPEC CHECKSUMS:
+  IGListDiffKit: 665d6cf43ce726e676013db9c7d6c4294259b6b2
+  IGListKit: fd5a5d21935298f5849fa49d426843cff97b77c7
+  Yoga: 090c6851e548d085d6211b5466b57ba8f4013a90
+  YogaKit: 5ae1939cd7516fdf6c343abb4b4aa381c9911ccf
+
+PODFILE CHECKSUM: e5d9841ef739884db00a29f2d529d16bf247a4ca
+
+COCOAPODS: 1.12.1

YogaKit/YogaKitSample/YogaKitSample.xcodeproj/project.pbxproj

@@ -7,21 +7,27 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
-		13687D481DF8748400E7C260 /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 13687D471DF8748400E7C260 /* main.m */; };
-		13687D4B1DF8748400E7C260 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 13687D4A1DF8748400E7C260 /* AppDelegate.m */; };
-		13687D4E1DF8748400E7C260 /* ViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 13687D4D1DF8748400E7C260 /* ViewController.m */; };
 		13687D531DF8748400E7C260 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 13687D521DF8748400E7C260 /* Assets.xcassets */; };
-		13687D781DF878C600E7C260 /* YGEnums.h in yoga */ = {isa = PBXBuildFile; fileRef = 13687D5E1DF8778F00E7C260 /* YGEnums.h */; };
-		13687D791DF878C600E7C260 /* YGMacros.h in yoga */ = {isa = PBXBuildFile; fileRef = 13687D5F1DF8778F00E7C260 /* YGMacros.h */; };
-		13687D7A1DF878C600E7C260 /* Yoga.h in yoga */ = {isa = PBXBuildFile; fileRef = 13687D631DF8778F00E7C260 /* Yoga.h */; };
-		13687D7C1DF878DD00E7C260 /* UIView+Yoga.h in YogaKit */ = {isa = PBXBuildFile; fileRef = 13687D691DF8778F00E7C260 /* UIView+Yoga.h */; };
-		13687D801DF87CEC00E7C260 /* UIView+Yoga.m in Sources */ = {isa = PBXBuildFile; fileRef = 13687D6A1DF8778F00E7C260 /* UIView+Yoga.m */; };
-		13687D811DF87CF200E7C260 /* YGNodeList.c in Sources */ = {isa = PBXBuildFile; fileRef = 13687D601DF8778F00E7C260 /* YGNodeList.c */; };
-		13687D821DF87CF200E7C260 /* Yoga.c in Sources */ = {isa = PBXBuildFile; fileRef = 13687D621DF8778F00E7C260 /* Yoga.c */; };
 		13687D851DF87D1E00E7C260 /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 13687D841DF87D1E00E7C260 /* UIKit.framework */; };
 		13687D871DF87D2400E7C260 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 13687D861DF87D2400E7C260 /* Foundation.framework */; };
+		15A7CB5995C9DAB1C8803834 /* Pods_YogaKitSample.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C80A931E90C7F3088CB86822 /* Pods_YogaKitSample.framework */; };
+		40BD9F461E477A09002790A9 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 40BD9F451E477A09002790A9 /* AppDelegate.swift */; };
+		40BD9F4B1E47850C002790A9 /* BasicViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 40BD9F4A1E47850C002790A9 /* BasicViewController.swift */; };
+		40BD9F501E479079002790A9 /* SingleLabelCollectionCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 40BD9F4F1E479079002790A9 /* SingleLabelCollectionCell.swift */; };
+		40BD9F521E479173002790A9 /* LayoutInclusionViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 40BD9F511E479173002790A9 /* LayoutInclusionViewController.swift */; };
+		638A94481E1F06D100A726AD /* ExamplesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 638A94471E1F06D100A726AD /* ExamplesViewController.swift */; };
 /* End PBXBuildFile section */
 
+/* Begin PBXContainerItemProxy section */
+		638A94541E215CC800A726AD /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 13687D3B1DF8748300E7C260 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 13687D421DF8748300E7C260;
+			remoteInfo = YogaKitSample;
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXCopyFilesBuildPhase section */
 		13687D771DF878A000E7C260 /* yoga */ = {
 			isa = PBXCopyFilesBuildPhase;
@@ -29,9 +35,6 @@
 			dstPath = include/yoga;
 			dstSubfolderSpec = 16;
 			files = (
-				13687D781DF878C600E7C260 /* YGEnums.h in yoga */,
-				13687D791DF878C600E7C260 /* YGMacros.h in yoga */,
-				13687D7A1DF878C600E7C260 /* Yoga.h in yoga */,
 			);
 			name = yoga;
 			runOnlyForDeploymentPostprocessing = 0;
@@ -42,7 +45,6 @@
 			dstPath = include/YogaKit;
 			dstSubfolderSpec = 16;
 			files = (
-				13687D7C1DF878DD00E7C260 /* UIView+Yoga.h in YogaKit */,
 			);
 			name = YogaKit;
 			runOnlyForDeploymentPostprocessing = 0;
@@ -51,23 +53,19 @@
 
 /* Begin PBXFileReference section */
 		13687D431DF8748400E7C260 /* YogaKitSample.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = YogaKitSample.app; sourceTree = BUILT_PRODUCTS_DIR; };
-		13687D471DF8748400E7C260 /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
-		13687D491DF8748400E7C260 /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
-		13687D4A1DF8748400E7C260 /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
-		13687D4C1DF8748400E7C260 /* ViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ViewController.h; sourceTree = "<group>"; };
-		13687D4D1DF8748400E7C260 /* ViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ViewController.m; sourceTree = "<group>"; };
 		13687D521DF8748400E7C260 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		13687D571DF8748400E7C260 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
-		13687D5E1DF8778F00E7C260 /* YGEnums.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = YGEnums.h; sourceTree = "<group>"; };
-		13687D5F1DF8778F00E7C260 /* YGMacros.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = YGMacros.h; sourceTree = "<group>"; };
-		13687D601DF8778F00E7C260 /* YGNodeList.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = YGNodeList.c; sourceTree = "<group>"; };
-		13687D611DF8778F00E7C260 /* YGNodeList.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = YGNodeList.h; sourceTree = "<group>"; };
-		13687D621DF8778F00E7C260 /* Yoga.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = Yoga.c; sourceTree = "<group>"; };
-		13687D631DF8778F00E7C260 /* Yoga.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Yoga.h; sourceTree = "<group>"; };
-		13687D691DF8778F00E7C260 /* UIView+Yoga.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "UIView+Yoga.h"; sourceTree = "<group>"; };
-		13687D6A1DF8778F00E7C260 /* UIView+Yoga.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "UIView+Yoga.m"; sourceTree = "<group>"; };
 		13687D841DF87D1E00E7C260 /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = System/Library/Frameworks/UIKit.framework; sourceTree = SDKROOT; };
 		13687D861DF87D2400E7C260 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
+		1D2FF4D5FCA6A8C54A4074A3 /* Pods-YogaKitSample.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-YogaKitSample.debug.xcconfig"; path = "Pods/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample.debug.xcconfig"; sourceTree = "<group>"; };
+		40BD9F451E477A09002790A9 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		40BD9F4A1E47850C002790A9 /* BasicViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = BasicViewController.swift; path = ViewControllers/BasicViewController.swift; sourceTree = "<group>"; };
+		40BD9F4F1E479079002790A9 /* SingleLabelCollectionCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = SingleLabelCollectionCell.swift; path = Views/SingleLabelCollectionCell.swift; sourceTree = "<group>"; };
+		40BD9F511E479173002790A9 /* LayoutInclusionViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = LayoutInclusionViewController.swift; path = ViewControllers/LayoutInclusionViewController.swift; sourceTree = "<group>"; };
+		638A94471E1F06D100A726AD /* ExamplesViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ExamplesViewController.swift; sourceTree = "<group>"; };
+		638A944F1E215CC800A726AD /* YogaKitSampleTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = YogaKitSampleTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		82F0896A88112E957EF37C7F /* Pods-YogaKitSample.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-YogaKitSample.release.xcconfig"; path = "Pods/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample.release.xcconfig"; sourceTree = "<group>"; };
+		C80A931E90C7F3088CB86822 /* Pods_YogaKitSample.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_YogaKitSample.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -77,6 +75,14 @@
 			files = (
 				13687D871DF87D2400E7C260 /* Foundation.framework in Frameworks */,
 				13687D851DF87D1E00E7C260 /* UIKit.framework in Frameworks */,
+				15A7CB5995C9DAB1C8803834 /* Pods_YogaKitSample.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		638A944C1E215CC800A726AD /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -86,11 +92,10 @@
 		13687D3A1DF8748300E7C260 = {
 			isa = PBXGroup;
 			children = (
-				13687D5D1DF8778F00E7C260 /* yoga */,
-				13687D641DF8778F00E7C260 /* YogaKit */,
 				13687D451DF8748400E7C260 /* YogaKitSample */,
 				13687D441DF8748400E7C260 /* Products */,
 				13687D831DF87D1E00E7C260 /* Frameworks */,
+				E1C759E3C8E84821213ECE8D /* Pods */,
 			);
 			sourceTree = "<group>";
 		};
@@ -98,6 +103,7 @@
 			isa = PBXGroup;
 			children = (
 				13687D431DF8748400E7C260 /* YogaKitSample.app */,
+				638A944F1E215CC800A726AD /* YogaKitSampleTests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -105,58 +111,52 @@
 		13687D451DF8748400E7C260 /* YogaKitSample */ = {
 			isa = PBXGroup;
 			children = (
-				13687D491DF8748400E7C260 /* AppDelegate.h */,
-				13687D4A1DF8748400E7C260 /* AppDelegate.m */,
-				13687D4C1DF8748400E7C260 /* ViewController.h */,
-				13687D4D1DF8748400E7C260 /* ViewController.m */,
+				40BD9F4E1E47902F002790A9 /* Views */,
+				40BD9F481E4784B3002790A9 /* ViewControllers */,
+				638A94471E1F06D100A726AD /* ExamplesViewController.swift */,
 				13687D521DF8748400E7C260 /* Assets.xcassets */,
 				13687D571DF8748400E7C260 /* Info.plist */,
-				13687D461DF8748400E7C260 /* Supporting Files */,
+				40BD9F451E477A09002790A9 /* AppDelegate.swift */,
 			);
 			path = YogaKitSample;
 			sourceTree = "<group>";
 		};
-		13687D461DF8748400E7C260 /* Supporting Files */ = {
-			isa = PBXGroup;
-			children = (
-				13687D471DF8748400E7C260 /* main.m */,
-			);
-			name = "Supporting Files";
-			sourceTree = "<group>";
-		};
-		13687D5D1DF8778F00E7C260 /* yoga */ = {
-			isa = PBXGroup;
-			children = (
-				13687D5E1DF8778F00E7C260 /* YGEnums.h */,
-				13687D5F1DF8778F00E7C260 /* YGMacros.h */,
-				13687D601DF8778F00E7C260 /* YGNodeList.c */,
-				13687D611DF8778F00E7C260 /* YGNodeList.h */,
-				13687D621DF8778F00E7C260 /* Yoga.c */,
-				13687D631DF8778F00E7C260 /* Yoga.h */,
-			);
-			name = yoga;
-			path = ../../yoga;
-			sourceTree = "<group>";
-		};
-		13687D641DF8778F00E7C260 /* YogaKit */ = {
-			isa = PBXGroup;
-			children = (
-				13687D691DF8778F00E7C260 /* UIView+Yoga.h */,
-				13687D6A1DF8778F00E7C260 /* UIView+Yoga.m */,
-			);
-			name = YogaKit;
-			path = ..;
-			sourceTree = "<group>";
-		};
 		13687D831DF87D1E00E7C260 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
 				13687D861DF87D2400E7C260 /* Foundation.framework */,
 				13687D841DF87D1E00E7C260 /* UIKit.framework */,
+				C80A931E90C7F3088CB86822 /* Pods_YogaKitSample.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
 		};
+		40BD9F481E4784B3002790A9 /* ViewControllers */ = {
+			isa = PBXGroup;
+			children = (
+				40BD9F4A1E47850C002790A9 /* BasicViewController.swift */,
+				40BD9F511E479173002790A9 /* LayoutInclusionViewController.swift */,
+			);
+			name = ViewControllers;
+			sourceTree = "<group>";
+		};
+		40BD9F4E1E47902F002790A9 /* Views */ = {
+			isa = PBXGroup;
+			children = (
+				40BD9F4F1E479079002790A9 /* SingleLabelCollectionCell.swift */,
+			);
+			name = Views;
+			sourceTree = "<group>";
+		};
+		E1C759E3C8E84821213ECE8D /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				1D2FF4D5FCA6A8C54A4074A3 /* Pods-YogaKitSample.debug.xcconfig */,
+				82F0896A88112E957EF37C7F /* Pods-YogaKitSample.release.xcconfig */,
+			);
+			name = Pods;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -164,11 +164,13 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 13687D5A1DF8748400E7C260 /* Build configuration list for PBXNativeTarget "YogaKitSample" */;
 			buildPhases = (
+				513B543F92B2E4F4D1EE1CE7 /* [CP] Check Pods Manifest.lock */,
 				13687D771DF878A000E7C260 /* yoga */,
 				13687D7B1DF878CE00E7C260 /* YogaKit */,
 				13687D3F1DF8748300E7C260 /* Sources */,
 				13687D401DF8748300E7C260 /* Frameworks */,
 				13687D411DF8748300E7C260 /* Resources */,
+				FA2FB9DD6471BDD3FBCE503B /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -179,19 +181,43 @@
 			productReference = 13687D431DF8748400E7C260 /* YogaKitSample.app */;
 			productType = "com.apple.product-type.application";
 		};
+		638A944E1E215CC800A726AD /* YogaKitSampleTests */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 638A94561E215CC800A726AD /* Build configuration list for PBXNativeTarget "YogaKitSampleTests" */;
+			buildPhases = (
+				638A944B1E215CC800A726AD /* Sources */,
+				638A944C1E215CC800A726AD /* Frameworks */,
+				638A944D1E215CC800A726AD /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				638A94551E215CC800A726AD /* PBXTargetDependency */,
+			);
+			name = YogaKitSampleTests;
+			productName = YogaKitSampleTests;
+			productReference = 638A944F1E215CC800A726AD /* YogaKitSampleTests.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
 		13687D3B1DF8748300E7C260 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0810;
+				LastUpgradeCheck = 0820;
 				ORGANIZATIONNAME = facebook;
 				TargetAttributes = {
 					13687D421DF8748300E7C260 = {
 						CreatedOnToolsVersion = 8.1;
+						LastSwiftMigration = 0820;
 						ProvisioningStyle = Automatic;
 					};
+					638A944E1E215CC800A726AD = {
+						CreatedOnToolsVersion = 8.2.1;
+						ProvisioningStyle = Automatic;
+						TestTargetID = 13687D421DF8748300E7C260;
+					};
 				};
 			};
 			buildConfigurationList = 13687D3E1DF8748300E7C260 /* Build configuration list for PBXProject "YogaKitSample" */;
@@ -208,6 +234,7 @@
 			projectRoot = "";
 			targets = (
 				13687D421DF8748300E7C260 /* YogaKitSample */,
+				638A944E1E215CC800A726AD /* YogaKitSampleTests */,
 			);
 		};
 /* End PBXProject section */
@@ -221,24 +248,90 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		638A944D1E215CC800A726AD /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXResourcesBuildPhase section */
 
+/* Begin PBXShellScriptBuildPhase section */
+		513B543F92B2E4F4D1EE1CE7 /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-YogaKitSample-checkManifestLockResult.txt",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
+		};
+		FA2FB9DD6471BDD3FBCE503B /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/IGListDiffKit/IGListDiffKit.framework",
+				"${BUILT_PRODUCTS_DIR}/IGListKit/IGListKit.framework",
+				"${BUILT_PRODUCTS_DIR}/Yoga/yoga.framework",
+				"${BUILT_PRODUCTS_DIR}/YogaKit/YogaKit.framework",
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListDiffKit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListKit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/yoga.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/YogaKit.framework",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		13687D3F1DF8748300E7C260 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				13687D801DF87CEC00E7C260 /* UIView+Yoga.m in Sources */,
-				13687D4E1DF8748400E7C260 /* ViewController.m in Sources */,
-				13687D4B1DF8748400E7C260 /* AppDelegate.m in Sources */,
-				13687D821DF87CF200E7C260 /* Yoga.c in Sources */,
-				13687D811DF87CF200E7C260 /* YGNodeList.c in Sources */,
-				13687D481DF8748400E7C260 /* main.m in Sources */,
+				40BD9F501E479079002790A9 /* SingleLabelCollectionCell.swift in Sources */,
+				40BD9F521E479173002790A9 /* LayoutInclusionViewController.swift in Sources */,
+				638A94481E1F06D100A726AD /* ExamplesViewController.swift in Sources */,
+				40BD9F4B1E47850C002790A9 /* BasicViewController.swift in Sources */,
+				40BD9F461E477A09002790A9 /* AppDelegate.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		638A944B1E215CC800A726AD /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXSourcesBuildPhase section */
 
+/* Begin PBXTargetDependency section */
+		638A94551E215CC800A726AD /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 13687D421DF8748300E7C260 /* YogaKitSample */;
+			targetProxy = 638A94541E215CC800A726AD /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin XCBuildConfiguration section */
 		13687D581DF8748400E7C260 /* Debug */ = {
 			isa = XCBuildConfiguration;
@@ -258,10 +351,11 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGNING_ALLOWED = NO;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -280,7 +374,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -305,10 +399,11 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGNING_ALLOWED = NO;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
@@ -321,7 +416,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
@@ -330,23 +425,60 @@
 		};
 		13687D5B1DF8748400E7C260 /* Debug */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1D2FF4D5FCA6A8C54A4074A3 /* Pods-YogaKitSample.debug.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				INFOPLIST_FILE = YogaKitSample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_INSTALL_OBJC_HEADER = NO;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.1;
 			};
 			name = Debug;
 		};
 		13687D5C1DF8748400E7C260 /* Release */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 82F0896A88112E957EF37C7F /* Pods-YogaKitSample.release.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				INFOPLIST_FILE = YogaKitSample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_INSTALL_OBJC_HEADER = NO;
+				SWIFT_VERSION = 5.1;
+			};
+			name = Release;
+		};
+		638A94571E215CC800A726AD /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				INFOPLIST_FILE = YogaKitSampleTests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSampleTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/YogaKitSample.app/YogaKitSample";
+			};
+			name = Debug;
+		};
+		638A94581E215CC800A726AD /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				INFOPLIST_FILE = YogaKitSampleTests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSampleTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/YogaKitSample.app/YogaKitSample";
 			};
 			name = Release;
 		};
@@ -369,6 +501,16 @@
 				13687D5C1DF8748400E7C260 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		638A94561E215CC800A726AD /* Build configuration list for PBXNativeTarget "YogaKitSampleTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				638A94571E215CC800A726AD /* Debug */,
+				638A94581E215CC800A726AD /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

YogaKit/YogaKitSample/YogaKitSample.xcodeproj/xcshareddata/xcschemes/YogaKitSample.xcscheme

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0820"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "13687D421DF8748300E7C260"
+               BuildableName = "YogaKitSample.app"
+               BlueprintName = "YogaKitSample"
+               ReferencedContainer = "container:YogaKitSample.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "638A944E1E215CC800A726AD"
+               BuildableName = "YogaKitSampleTests.xctest"
+               BlueprintName = "YogaKitSampleTests"
+               ReferencedContainer = "container:YogaKitSample.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "13687D421DF8748300E7C260"
+            BuildableName = "YogaKitSample.app"
+            BlueprintName = "YogaKitSample"
+            ReferencedContainer = "container:YogaKitSample.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "13687D421DF8748300E7C260"
+            BuildableName = "YogaKitSample.app"
+            BlueprintName = "YogaKitSample"
+            ReferencedContainer = "container:YogaKitSample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "13687D421DF8748300E7C260"
+            BuildableName = "YogaKitSample.app"
+            BlueprintName = "YogaKitSample"
+            ReferencedContainer = "container:YogaKitSample.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

YogaKit/YogaKitSample/YogaKitSample.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:YogaKitSample.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

YogaKit/YogaKitSample/YogaKitSample/AppDelegate.h

@@ -1,16 +0,0 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : UIResponder <UIApplicationDelegate>
-
-@property (strong, nonatomic) UIWindow *window;
-
-@end
-

YogaKit/YogaKitSample/YogaKitSample/AppDelegate.m

@@ -1,27 +0,0 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-#import "AppDelegate.h"
-#import "ViewController.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
-
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
-    self.window.rootViewController = [ViewController new];
-    self.window.backgroundColor = [UIColor whiteColor];
-    [self.window makeKeyAndVisible];
-    return YES;
-}
-
-@end

YogaKit/YogaKitSample/YogaKitSample/AppDelegate.swift

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import Foundation
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+
+    func applicationDidFinishLaunching(_ application: UIApplication) {
+        self.window = UIWindow(frame: UIScreen.main.bounds)
+        if let window = self.window {
+            let navigationController = UINavigationController(rootViewController: ExamplesViewController())
+            navigationController.navigationBar.isTranslucent = false
+
+            window.rootViewController = navigationController
+            window.backgroundColor = .white
+            window.makeKeyAndVisible()
+        }
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,43 +1,69 @@
 {
   "images" : [
     {
-      "idiom" : "iphone",
       "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Yoga-20x20@2x.png",
       "scale" : "2x"
     },
     {
-      "idiom" : "iphone",
       "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Yoga-20x20@3x.png",
       "scale" : "3x"
     },
     {
-      "idiom" : "iphone",
       "size" : "29x29",
-      "scale" : "2x"
+      "idiom" : "iphone",
+      "filename" : "Yoga-29x29@1x.png",
+      "scale" : "1x"
     },
     {
-      "idiom" : "iphone",
       "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
       "idiom" : "iphone",
-      "size" : "40x40",
+      "filename" : "Yoga-29x29@2x.png",
       "scale" : "2x"
     },
     {
+      "size" : "29x29",
       "idiom" : "iphone",
-      "size" : "40x40",
+      "filename" : "Yoga-29x29@3x.png",
       "scale" : "3x"
     },
     {
+      "size" : "40x40",
       "idiom" : "iphone",
-      "size" : "60x60",
+      "filename" : "Yoga-40x40@2x.png",
       "scale" : "2x"
     },
     {
+      "size" : "40x40",
       "idiom" : "iphone",
+      "filename" : "Yoga-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "57x57",
+      "idiom" : "iphone",
+      "filename" : "Yoga-57x57@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "57x57",
+      "idiom" : "iphone",
+      "filename" : "Yoga-57x57@2x.png",
+      "scale" : "2x"
+    },
+    {
       "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Yoga-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Yoga-60x60@3x.png",
       "scale" : "3x"
     }
   ],

YogaKit/YogaKitSample/YogaKitSample/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

YogaKit/YogaKitSample/YogaKitSample/ExamplesViewController.swift

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import UIKit
+import IGListKit
+
+private final class ExampleModel {
+    let title: String
+    let controllerClass: UIViewController.Type
+
+    init(title: String, controllerClass: UIViewController.Type) {
+        self.title = title
+        self.controllerClass = controllerClass
+    }
+}
+
+extension ExampleModel: ListDiffable {
+    fileprivate func diffIdentifier() -> NSObjectProtocol {
+        return title as NSString
+    }
+
+    fileprivate func isEqual(toDiffableObject object: ListDiffable?) -> Bool {
+        guard let otherObj = object as? ExampleModel else { return false }
+
+        return (title == otherObj.title) &&
+               (controllerClass == otherObj.controllerClass)
+    }
+}
+
+final class ExamplesViewController: UIViewController, ListAdapterDataSource, ListSingleSectionControllerDelegate {
+
+    private lazy var adapter: ListAdapter = {
+        return ListAdapter(updater: ListAdapterUpdater(), viewController: self, workingRangeSize: 0)
+    }()
+    private lazy var collectionView: UICollectionView = {
+        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
+        collectionView.backgroundColor = UIColor.systemBackground
+        return collectionView
+    }()
+
+    // Update this to array to create more examples.
+    private let models: [ExampleModel] = [ExampleModel(title: "Basic Layout", controllerClass: BasicViewController.self),
+                                          ExampleModel(title: "Exclude Views in Layout", controllerClass: LayoutInclusionViewController.self)]
+
+    //MARK: UIViewController
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        title = "Examples"
+        view.addSubview(collectionView)
+        adapter.collectionView = collectionView
+        adapter.dataSource = self
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        collectionView.frame = view.bounds
+    }
+
+    //MARK: IGListAdapterDataSource
+
+    func objects(for listAdapter: ListAdapter) -> [ListDiffable] {
+        return models as [ListDiffable]
+    }
+
+    func listAdapter(_ listAdapter: ListAdapter, sectionControllerFor object: Any) -> ListSectionController {
+        let sizeBlock: ListSingleSectionCellSizeBlock = { (model, context) in
+            return CGSize(width: (context?.containerSize.width)!, height: 75.0)
+        }
+
+        let configureBlock: ListSingleSectionCellConfigureBlock = { (model, cell) in
+            guard let m = model as? ExampleModel, let c = cell as? SingleLabelCollectionCell else {
+                return
+            }
+
+            c.label.text = m.title
+        }
+
+        let sectionController = ListSingleSectionController(cellClass: SingleLabelCollectionCell.self,
+                                                              configureBlock: configureBlock,
+                                                              sizeBlock: sizeBlock)
+        sectionController.selectionDelegate = self
+        return sectionController
+    }
+
+    func emptyView(for listAdapter: ListAdapter) -> UIView? { return nil }
+
+    //MARK: IGListSingleSectionControllerDelegate
+    func didSelect(_ sectionController: ListSingleSectionController, with object: Any) {
+        let section = adapter.section(for: sectionController)
+        let model = models[section]
+
+        let controller = model.controllerClass.init()
+        controller.title = model.title
+
+        self.navigationController?.pushViewController(controller, animated: true)
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/SwiftViewController.swift

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import UIKit
+import IGListKit
+import YogaKit
+
+struct DemoItem {
+    let name: String
+    root.backgroundColor = .red
+    root.yoga.isEnabled = true
+    root.yoga.width = YGValue(self.view.bounds.size.width)
+    root.yoga.height = YGValue(self.view.bounds.size.height)
+    root.yoga.alignItems = .center
+}
+
+final class SwiftViewController: UIViewController, IGListAdapterDataSource {
+
+    lazy var adapter: IGListAdapter = {
+        return IGListAdapter(updater: IGListAdapterUpdater(), viewController: self, workingRangeSize: 0)
+    }()
+    let collectionView = IGListCollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
+
+    //MARK: UIViewController
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        title = "YogaKit Examples"
+        view.addSubview(collectionView)
+        adapter.collectionView = collectionView
+        adapter.dataSource = self
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        collectionView.frame = view.bounds
+    }
+
+
+    //MARK: IGListAdapterDataSource
+
+    func objects(for listAdapter: IGListAdapter) -> [IGListDiffable] {
+        return ["Dustin" as IGListDiffable, "Ryan" as IGListDiffable]
+    }
+
+    func listAdapter(_ listAdapter: IGListAdapter, sectionControllerFor object: Any) -> IGListSectionController {
+        let sizeBlock: IGListSingleSectionCellSizeBlock = { (model, context) in
+            return CGSize(width: (context?.containerSize.width)!, height: 100.0)
+        }
+        let configureBlock: IGListSingleSectionCellConfigureBlock = { (model, cell) in
+            guard let m = model as? String else {
+                return
+            }
+
+            cell.backgroundColor = (m == "Dustin") ? .blue : .red
+        }
+
+        return IGListSingleSectionController(cellClass: UICollectionViewCell.self,
+                                             configureBlock: configureBlock,
+                                             sizeBlock: sizeBlock)
+    }
+
+    func emptyView(for listAdapter: IGListAdapter) -> UIView? {
+        return nil
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/ViewController.h

@@ -1,15 +0,0 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-
-@end
-

YogaKit/YogaKitSample/YogaKitSample/ViewController.m

@@ -1,60 +1,51 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 #import "ViewController.h"
 
 #import <YogaKit/UIView+Yoga.h>
 
-@interface ViewController ()
-
-@end
-
 @implementation ViewController
 
-- (void)viewDidLoad
-{
-    UIView *root = self.view;
-    root.backgroundColor = [UIColor redColor];
-    [root yg_setUsesYoga:YES];
-    [root yg_setWidth:self.view.bounds.size.width];
-    [root yg_setHeight:self.view.bounds.size.height];
-    [root yg_setAlignItems:YGAlignCenter];
-    [root yg_setJustifyContent:YGJustifyCenter];
+- (void)viewDidLoad {
+  UIView* root = self.view;
+  root.backgroundColor = [UIColor redColor];
+  root.yoga.isEnabled = YES;
+  root.yoga.width = YGPointValue(self.view.bounds.size.width);
+  root.yoga.height = YGPointValue(self.view.bounds.size.height);
+  root.yoga.alignItems = YGAlignCenter;
+  root.yoga.justifyContent = YGJustifyCenter;
 
-    UIView *child1 = [UIView new];
-    child1.backgroundColor = [UIColor blueColor];
-    [child1 yg_setUsesYoga:YES];
-    [child1 yg_setWidth:100];
-    [child1 yg_setHeight:100];
+  UIView* child1 = [UIView new];
+  child1.backgroundColor = [UIColor blueColor];
+  child1.yoga.isEnabled = YES;
+  child1.yoga.width = YGPointValue(100);
+  child1.yoga.height = YGPointValue(100);
 
-    UIView *child2 = [UIView new];
-    child2.backgroundColor = [UIColor greenColor];
-    child2.frame = (CGRect) {
-        .size = {
-            .width = 200,
-            .height = 100,
-        }
-    };
+  UIView* child2 = [UIView new];
+  child2.backgroundColor = [UIColor greenColor];
+  child2.frame = (CGRect){
+      .size = {
+          .width = 200,
+          .height = 100,
+      }};
 
-    UIView *child3 = [UIView new];
-    child3.backgroundColor = [UIColor yellowColor];
-    child3.frame = (CGRect) {
-        .size = {
-            .width = 100,
-            .height = 100,
-        }
-    };
+  UIView* child3 = [UIView new];
+  child3.backgroundColor = [UIColor yellowColor];
+  child3.frame = (CGRect){
+      .size = {
+          .width = 100,
+          .height = 100,
+      }};
 
-    [child2 addSubview:child3];
-    [root addSubview:child1];
-    [root addSubview:child2];
-    [root yg_applyLayout];
+  [child2 addSubview:child3];
+  [root addSubview:child1];
+  [root addSubview:child2];
+  [root.yoga applyLayoutPreservingOrigin:NO];
 }
 
-
 @end

YogaKit/YogaKitSample/YogaKitSample/ViewControllers/BasicViewController.swift

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import UIKit
+import YogaKit
+
+final class BasicViewController: UIViewController {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        let containerSize = self.view.bounds.size
+
+        view.backgroundColor = UIColor.systemBackground
+        view.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.width = YGValue(containerSize.width)
+            layout.height = YGValue(containerSize.height)
+            layout.alignItems = .center
+            layout.justifyContent = .center
+        }
+
+        let child1 = UIView()
+        child1.backgroundColor = .blue
+        child1.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.width = 100
+            layout.height = 10
+            layout.marginBottom = 25
+        }
+        view.addSubview(child1)
+
+        let child2 = UIView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
+        child2.backgroundColor = .green
+        child2.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.alignSelf = .flexEnd
+            layout.width = 200
+            layout.height = 200
+        }
+        view.addSubview(child2)
+
+        let child3 = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
+        child3.backgroundColor = .yellow
+        child3.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.alignSelf = .flexStart
+            layout.width = 100
+            layout.height = 100
+
+        }
+        view.addSubview(child3)
+
+        view.yoga.applyLayout(preservingOrigin: true)
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import UIKit
+import YogaKit
+
+final class LayoutInclusionViewController: UIViewController {
+    private let button: UIButton = UIButton(type: .system)
+    private let disappearingView: UIView = UIView(frame: .zero)
+    private let contentView: UIView = UIView(frame: .zero)
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        let root = self.view!
+        root.backgroundColor = .white
+        root.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.flexDirection = .column
+            layout.justifyContent = .spaceAround
+        }
+
+        contentView.backgroundColor = .clear
+        contentView.layer.borderColor = UIColor.lightGray.cgColor
+        contentView.layer.borderWidth = 1.0
+        contentView.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.height = 300
+            layout.width = YGValue(self.view.bounds.size.width)
+            layout.flexDirection = .row
+            layout.justifyContent = .center
+            layout.paddingHorizontal = 25
+        }
+        self.view.addSubview(contentView)
+
+        let redView = UIView(frame: .zero)
+        redView.backgroundColor = .red
+        redView.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.flexGrow = 1
+            layout.flexShrink = 1
+        }
+        contentView.addSubview(redView)
+
+        disappearingView.backgroundColor = .blue
+        disappearingView.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.flexGrow = 1
+        }
+        contentView.addSubview(disappearingView)
+
+        button.setTitle("Add Blue View", for: .selected)
+        button.setTitle("Remove Blue View", for: .normal)
+        button.addTarget(self, action: #selector(buttonWasTapped), for: .touchUpInside)
+        button.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.height = 300
+            layout.width = 300
+            layout.alignSelf = .center
+        }
+        root.addSubview(button)
+
+        root.yoga.applyLayout(preservingOrigin: false)
+    }
+
+    // MARK - UIButton Action
+    @objc func buttonWasTapped() {
+        button.isSelected = !button.isSelected
+
+        button.isUserInteractionEnabled = false
+        disappearingView.yoga.isIncludedInLayout = !disappearingView.yoga.isIncludedInLayout
+        disappearingView.isHidden = !disappearingView.isHidden
+
+        contentView.yoga.applyLayout(preservingOrigin: true)
+        button.isUserInteractionEnabled = true
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/Views/SingleLabelCollectionCell.swift

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import UIKit
+import YogaKit
+
+final class SingleLabelCollectionCell: UICollectionViewCell {
+    let label: UILabel = UILabel(frame: .zero)
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+
+        contentView.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.flexDirection = .column
+            layout.justifyContent = .flexEnd
+        }
+
+        label.textAlignment = .center
+        label.numberOfLines = 1
+        label.yoga.isIncludedInLayout = false
+        contentView.addSubview(label)
+
+        let border = UIView(frame: .zero)
+        border.backgroundColor = .lightGray
+        border.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.height = 0.5
+            layout.marginHorizontal = 25
+        }
+        contentView.addSubview(border)
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func layoutSubviews() {
+        super.layoutSubviews()
+
+        contentView.yoga.applyLayout(preservingOrigin: false)
+        label.frame = contentView.bounds
+    }
+}

YogaKit/YogaKitSample/YogaKitSample/main.m

@@ -1,16 +0,0 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-    @autoreleasepool {
-        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-    }
-}

android/README.md

@@ -0,0 +1,21 @@
+# YogaLayout [![Platform](https://img.shields.io/badge/platforms-Android-orange.svg)](https://facebook.github.io/yoga/docs/api/android/) [![Languages](https://img.shields.io/badge/languages-Java-orange.svg)](https://facebook.github.io/yoga/docs/api/android/) [![Download](https://img.shields.io/bintray/v/facebook/maven/com.facebook.yoga.android:yoga-layout.svg)](https://bintray.com/facebook/maven/com.facebook.yoga.android%3Ayoga-layout/_latestVersion)
+
+## Installation
+
+YogaLayout is available via jcenter:
+
+    implementation 'com.facebook.yoga.android:yoga-layout:1.16.0'
+
+## Getting Started
+
+Check out the docs [here](https://yogalayout.com/getting-started/standalone/).
+
+We also have a sample project.  To try it, clone the repo and run (with a device attached)
+
+    buck install -r android/sample
+
+## Contributing
+
+We welcome all pull-requests! At Facebook we sync the open source version of YogaKit daily, so we're always testing the latest changes.
+
+See the CONTRIBUTING file for how to help out.

android/build.gradle

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+plugins {
+    id("com.android.library")
+    id("publish")
+}
+
+android {
+    namespace 'com.facebook.yoga.android'
+
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
+    ndkVersion rootProject.ndkVersion
+
+    defaultConfig {
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
+    }
+
+    compileOptions {
+        targetCompatibility rootProject.targetCompatibilityVersion
+        sourceCompatibility rootProject.sourceCompatibilityVersion
+    }
+
+    publishing {
+        multipleVariants {
+            withSourcesJar()
+            withJavadocJar()
+            includeBuildTypeValues('debug', 'release')
+        }
+    }
+}
+
+dependencies {
+    api project(':yoga')
+}

android/src/main/AndroidManifest.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  Copyright (c) Facebook, Inc. and its affiliates.
+
+  This source code is licensed under the MIT license found in the
+  LICENSE file in the root directory of this source tree.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+  <application/>
+
+</manifest>

android/src/main/java/com/facebook/yoga/android/VirtualYogaLayout.java

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.yoga.android;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.facebook.yoga.YogaNode;
+import com.facebook.yoga.YogaNodeFactory;
+
+/**
+ * Much like a {@link YogaLayout}, except this class does not render itself (the container) to the
+ * screen.  As a result, <i>do not use this if you wish the container to have a background or
+ * foreground</i>.  However, all of its children will still render as expected.
+ *
+ * <p>
+ * In practice, this class never added to the View tree, and all its children become children of its
+ * parent.  As a result, all the layout (such as the traversal of the tree) is performed by Yoga
+ * (and so natively) increasing performance.
+ */
+public class VirtualYogaLayout extends ViewGroup {
+
+  final private List<View> mChildren = new LinkedList<>();
+  final private Map<View, YogaNode> mYogaNodes = new HashMap<>();
+  final private YogaNode mYogaNode = YogaNodeFactory.create();
+
+  public VirtualYogaLayout(Context context) {
+    super(context);
+  }
+
+  public VirtualYogaLayout(Context context, AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public VirtualYogaLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    YogaLayout.LayoutParams lp = new YogaLayout.LayoutParams(context, attrs);
+    YogaLayout.applyLayoutParams(lp, mYogaNode, this);
+  }
+
+  public YogaNode getYogaNode() {
+    return mYogaNode;
+  }
+
+  /**
+   * Called to add a view, creating a new yoga node for it and adding that yoga node to the parent.
+   * If the child is a {@link VirtualYogaLayout}, we simply transfer all its children to this one
+   * in a manner that maintains the tree, and add its root to the tree.
+   *
+   * @param child the View to add
+   * @param index the position at which to add it (ignored)
+   * @param params the layout parameters to apply
+   */
+  @Override
+  public void addView(View child, int index, ViewGroup.LayoutParams params) {
+    if (child instanceof VirtualYogaLayout) {
+      ((VirtualYogaLayout) child).transferChildren(this);
+
+      final YogaNode childNode = ((VirtualYogaLayout) child).getYogaNode();
+      mYogaNode.addChildAt(childNode, mYogaNode.getChildCount());
+
+      return;
+    }
+
+    YogaNode node = YogaNodeFactory.create();
+    YogaLayout.LayoutParams lp = new YogaLayout.LayoutParams(params);
+    YogaLayout.applyLayoutParams(lp, node, child);
+    node.setData(child);
+    node.setMeasureFunction(new YogaLayout.ViewMeasureFunction());
+
+    mYogaNode.addChildAt(node, mYogaNode.getChildCount());
+
+    addView(child, node);
+  }
+
+  /**
+   * Called to add a view with a corresponding node, but not to change the Yoga tree in any way.
+   *
+   * @param child the View to add
+   * @param node the corresponding yoga node
+   */
+  public void addView(View child, YogaNode node) {
+    mChildren.add(child);
+    mYogaNodes.put(child, node);
+  }
+
+  /**
+   * Gives up children {@code View}s to the parent, maintaining the Yoga tree.  This function calls
+   * {@link YogaLayout#addView(View, YogaNode)} or {@link VirtualYogaLayout#addView(View, YogaNode)}
+   * on the parent to add the {@code View} without generating new yoga nodes.
+   *
+   * @param parent the parent to pass children to (must be a YogaLayout or a VirtualYogaLayout)
+   */
+  protected void transferChildren(ViewGroup parent) {
+    if (parent instanceof VirtualYogaLayout) {
+      for (View child : mChildren) {
+        ((VirtualYogaLayout) parent).addView(child, mYogaNodes.get(child));
+      }
+    } else if (parent instanceof YogaLayout) {
+      for (View child : mChildren) {
+        ((YogaLayout) parent).addView(child, mYogaNodes.get(child));
+      }
+    } else {
+      throw new RuntimeException("VirtualYogaLayout cannot transfer children to ViewGroup of type "
+          +parent.getClass().getCanonicalName()+".  Must either be a VirtualYogaLayout or a " +
+          "YogaLayout.");
+    }
+    mChildren.clear();
+  }
+
+  @Override
+  protected void onLayout(boolean changed, int l, int t, int r, int b) {
+    throw new RuntimeException("Attempting to layout a VirtualYogaLayout");
+  }
+
+  @Override
+  public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
+    return new YogaLayout.LayoutParams(getContext(), attrs);
+  }
+
+  @Override
+  protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
+    return new YogaLayout.LayoutParams(
+        ViewGroup.LayoutParams.MATCH_PARENT,
+        ViewGroup.LayoutParams.MATCH_PARENT);
+  }
+
+  @Override
+  protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
+    return new YogaLayout.LayoutParams(p);
+  }
+
+  @Override
+  protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
+    return p instanceof YogaLayout.LayoutParams;
+  }
+}

android/src/main/java/com/facebook/yoga/android/YogaLayout.java

@@ -0,0 +1,816 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.yoga.android;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.TypedArray;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.util.SparseArray;
+import android.util.TypedValue;
+import android.view.View;
+import android.view.ViewGroup;
+import com.facebook.yoga.YogaAlign;
+import com.facebook.yoga.YogaConstants;
+import com.facebook.yoga.YogaDirection;
+import com.facebook.yoga.YogaDisplay;
+import com.facebook.yoga.YogaEdge;
+import com.facebook.yoga.YogaFlexDirection;
+import com.facebook.yoga.YogaJustify;
+import com.facebook.yoga.YogaMeasureFunction;
+import com.facebook.yoga.YogaMeasureMode;
+import com.facebook.yoga.YogaMeasureOutput;
+import com.facebook.yoga.YogaNode;
+import com.facebook.yoga.YogaNodeFactory;
+import com.facebook.yoga.YogaOverflow;
+import com.facebook.yoga.YogaPositionType;
+import com.facebook.yoga.YogaWrap;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A {@code ViewGroup} based on the Yoga layout engine.
+ *
+ * <p>
+ * This class is designed to be as "plug and play" as possible.  That is, you can use it in XML
+ * like this (note: to use {@code YogaLayout} you need to use the {@link YogaViewLayoutFactory}):
+ * <p>
+ * <pre>{@code
+ * <YogaLayout
+ *     xmlns:android="http://schemas.android.com/apk/res/android"
+ *     xmlns:yoga="http://schemas.android.com/apk/com.facebook.yoga.android"
+ *     android:layout_width="match_owner"
+ *     android:layout_height="match_owner"
+ *     yoga:flex_direction="row"
+ *     yoga:padding_all="10dp"
+ *     >
+ *     <TextView
+ *         android:layout_width="match_owner"
+ *         android:layout_height="match_owner"
+ *         android:text="Hello, World!"
+ *         yoga:flex="1"
+ *         />
+ * </YogaLayout>
+ * }</pre>
+ *
+ * Under the hood, all views added to this {@code ViewGroup} are laid out using flexbox rules
+ * and the Yoga engine.
+ */
+public class YogaLayout extends ViewGroup {
+  private final Map<View, YogaNode> mYogaNodes;
+  private final YogaNode mYogaNode;
+
+  public YogaLayout(Context context) {
+    this(context, null, 0);
+  }
+
+  public YogaLayout(Context context, AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public YogaLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+
+    mYogaNode = YogaNodeFactory.create();
+    mYogaNodes = new HashMap<>();
+
+    mYogaNode.setData(this);
+    mYogaNode.setMeasureFunction(new ViewMeasureFunction());
+
+    LayoutParams layoutParams = null;
+    if (attrs != null) {
+      layoutParams = new LayoutParams(context, attrs);
+    } else {
+      layoutParams = (LayoutParams) generateDefaultLayoutParams();
+    }
+    applyLayoutParams(layoutParams, mYogaNode, this);
+  }
+
+  public YogaNode getYogaNode() {
+    return mYogaNode;
+  }
+
+  public YogaNode getYogaNodeForView(View view) {
+    return mYogaNodes.get(view);
+  }
+
+  /**
+   * Adds a child view with the specified layout parameters.
+   *
+   * In the typical View is added, this constructs a {@code YogaNode} for this child and applies all
+   * the {@code yoga:*} attributes.  The Yoga node is added to the Yoga tree and the child is added
+   * to this ViewGroup.
+   *
+   * If the child is a {@link YogaLayout} itself, we do not construct a new Yoga node for that
+   * child, but use its root node instead.
+   *
+   * If the child is a {@link VirtualYogaLayout}, we also use its Yoga node, but we also instruct it
+   * to transfer all of its children to this {@link YogaLayout} while preserving the Yoga tree (so
+   * that the layout of its children is correct).  The {@link VirtualYogaLayout} is then not added
+   * to the View hierarchy.
+   *
+   * <p><strong>Note:</strong> do not invoke this method from
+   * {@code #draw(android.graphics.Canvas)}, {@code onDraw(android.graphics.Canvas)},
+   * {@code #dispatchDraw(android.graphics.Canvas)} or any related method.</p>
+   *
+   * @param child the child view to add
+   * @param index the position at which to add the child or -1 to add last
+   * @param params the layout parameters to set on the child
+   */
+  @Override
+  public void addView(View child, int index, ViewGroup.LayoutParams params) {
+    // Internal nodes (which this is now) cannot have measure functions
+    mYogaNode.setMeasureFunction(null);
+
+    if (child instanceof VirtualYogaLayout) {
+      ((VirtualYogaLayout) child).transferChildren(this);
+      final YogaNode childNode = ((VirtualYogaLayout) child).getYogaNode();
+
+      mYogaNode.addChildAt(childNode, mYogaNode.getChildCount());
+
+      return;
+    }
+
+    super.addView(child, index, params);
+
+    // It is possible that addView is being called as part of a transferal of children, in which
+    // case we already know about the YogaNode and only need the Android View tree to be aware
+    // that we now own this child.  If so, we don't need to do anything further
+    if (mYogaNodes.containsKey(child)) {
+      return;
+    }
+
+    YogaNode childNode;
+
+    if (child instanceof YogaLayout) {
+      childNode = ((YogaLayout) child).getYogaNode();
+    } else {
+      if(mYogaNodes.containsKey(child)) {
+        childNode = mYogaNodes.get(child);
+      } else {
+        childNode = YogaNodeFactory.create();
+      }
+
+      childNode.setData(child);
+      childNode.setMeasureFunction(new ViewMeasureFunction());
+    }
+
+    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+    applyLayoutParams(lp, childNode, child);
+
+    mYogaNodes.put(child, childNode);
+    mYogaNode.addChildAt(childNode, mYogaNode.getChildCount());
+  }
+
+  /**
+   * Adds a view to this {@code ViewGroup} with an already given {@code YogaNode}.  Use
+   * this function if you already have a Yoga node (and perhaps tree) associated with the view you
+   * are adding, that you would like to preserve.
+   *
+   * @param child The view to add
+   * @param node The Yoga node belonging to the view
+   */
+  public void addView(View child, YogaNode node) {
+    mYogaNodes.put(child, node);
+    addView(child);
+  }
+
+  @Override
+  public void removeView(View view) {
+    removeViewFromYogaTree(view, false);
+    super.removeView(view);
+  }
+
+  @Override
+  public void removeViewAt(int index) {
+    removeViewFromYogaTree(getChildAt(index), false);
+    super.removeViewAt(index);
+  }
+
+  @Override
+  public void removeViewInLayout(View view) {
+    removeViewFromYogaTree(view, true);
+    super.removeViewInLayout(view);
+  }
+
+  @Override
+  public void removeViews(int start, int count) {
+    for (int i = start; i < start + count; i++) {
+      removeViewFromYogaTree(getChildAt(i), false);
+    }
+    super.removeViews(start, count);
+  }
+
+  @Override
+  public void removeViewsInLayout(int start, int count) {
+    for (int i = start; i < start + count; i++) {
+      removeViewFromYogaTree(getChildAt(i), true);
+    }
+    super.removeViewsInLayout(start, count);
+  }
+
+  @Override
+  public void removeAllViews() {
+    final int childCount = getChildCount();
+    for (int i = 0; i < childCount; i++) {
+      removeViewFromYogaTree(getChildAt(i), false);
+    }
+    super.removeAllViews();
+  }
+
+  @Override
+  public void removeAllViewsInLayout() {
+    final int childCount = getChildCount();
+    for (int i = 0; i < childCount; i++) {
+      removeViewFromYogaTree(getChildAt(i), true);
+    }
+    super.removeAllViewsInLayout();
+  }
+
+  /**
+   * Marks a particular view as "dirty" and to be relaid out.  If the view is not a child of this
+   * {@link YogaLayout}, the entire tree is traversed to find it.
+   *
+   * @param view the view to mark as dirty
+   */
+  public void invalidate(View view) {
+    if (mYogaNodes.containsKey(view)) {
+      mYogaNodes.get(view).dirty();
+      return;
+    }
+
+    final int childCount = mYogaNode.getChildCount();
+    for (int i = 0; i < childCount; i++) {
+      final YogaNode yogaNode = mYogaNode.getChildAt(i);
+      if (yogaNode.getData() instanceof YogaLayout) {
+        ((YogaLayout) yogaNode.getData()).invalidate(view);
+      }
+    }
+    invalidate();
+  }
+
+  private void removeViewFromYogaTree(View view, boolean inLayout) {
+    final YogaNode node = mYogaNodes.get(view);
+    if (node == null) {
+      return;
+    }
+
+    final YogaNode owner = node.getOwner();
+
+    for (int i = 0; i < owner.getChildCount(); i++) {
+      if (owner.getChildAt(i).equals(node)) {
+        owner.removeChildAt(i);
+        break;
+      }
+    }
+
+    node.setData(null);
+    mYogaNodes.remove(view);
+
+    if (inLayout) {
+      mYogaNode.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+    }
+  }
+
+  private void applyLayoutRecursive(YogaNode node, float xOffset, float yOffset) {
+    View view = (View) node.getData();
+
+    if (view != null && view != this) {
+      if (view.getVisibility() == GONE) {
+        return;
+      }
+      int left = Math.round(xOffset + node.getLayoutX());
+      int top = Math.round(yOffset + node.getLayoutY());
+      view.measure(
+          View.MeasureSpec.makeMeasureSpec(
+              Math.round(node.getLayoutWidth()),
+              View.MeasureSpec.EXACTLY),
+          View.MeasureSpec.makeMeasureSpec(
+              Math.round(node.getLayoutHeight()),
+              View.MeasureSpec.EXACTLY));
+      view.layout(left, top, left + view.getMeasuredWidth(), top + view.getMeasuredHeight());
+    }
+
+    final int childrenCount = node.getChildCount();
+    for (int i = 0; i < childrenCount; i++) {
+      if (this.equals(view)) {
+        applyLayoutRecursive(node.getChildAt(i), xOffset, yOffset);
+      } else if (view instanceof YogaLayout) {
+        continue;
+      } else {
+        applyLayoutRecursive(
+            node.getChildAt(i),
+            xOffset + node.getLayoutX(),
+            yOffset + node.getLayoutY());
+      }
+    }
+  }
+
+  @Override
+  protected void onLayout(boolean changed, int l, int t, int r, int b) {
+    // Either we are a root of a tree, or this function is called by our owner's onLayout, in which
+    // case our r-l and b-t are the size of our node.
+    if (!(getParent() instanceof YogaLayout)) {
+        createLayout(
+            MeasureSpec.makeMeasureSpec(r - l, MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(b - t, MeasureSpec.EXACTLY));
+    }
+
+    applyLayoutRecursive(mYogaNode, 0, 0);
+  }
+
+  /**
+   * This function is mostly unneeded, because Yoga is doing the measuring.  Hence we only need to
+   * return accurate results if we are the root.
+   *
+   * @param widthMeasureSpec the suggested specification for the width
+   * @param heightMeasureSpec the suggested specification for the height
+   */
+  @Override
+  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+    if (!(getParent() instanceof YogaLayout)) {
+      createLayout(widthMeasureSpec, heightMeasureSpec);
+    }
+
+    setMeasuredDimension(
+        Math.round(mYogaNode.getLayoutWidth()),
+        Math.round(mYogaNode.getLayoutHeight()));
+  }
+
+  private void createLayout(int widthMeasureSpec, int heightMeasureSpec) {
+    final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
+    final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
+    final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
+    final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
+
+    if (heightMode == MeasureSpec.EXACTLY) {
+      mYogaNode.setHeight(heightSize);
+    }
+    if (widthMode == MeasureSpec.EXACTLY) {
+      mYogaNode.setWidth(widthSize);
+    }
+    if (heightMode == MeasureSpec.AT_MOST) {
+      mYogaNode.setMaxHeight(heightSize);
+    }
+    if (widthMode == MeasureSpec.AT_MOST) {
+      mYogaNode.setMaxWidth(widthSize);
+    }
+    mYogaNode.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+  }
+
+  /**
+   * Applies the layout parameters to the YogaNode.  That is, this function is a translator from
+   * {@code yoga:X="Y"} to {@code yogaNode.setX(Y);}, with some reasonable defaults.
+   *
+   * <p>
+   * If the SDK version is high enough, and the {@code yoga:direction} is not set on
+   * the component, the direction (LTR or RTL) is set according to the locale.
+   *
+   * <p>
+   * The attributes {@code padding_top}, {@code padding_right} etc. default to those of the view's
+   * drawable background, if it has one.
+   *
+   * @param layoutParameters The source set of params
+   * @param node The destination node
+   */
+  protected static void applyLayoutParams(LayoutParams layoutParameters, YogaNode node, View view) {
+    // JELLY_BEAN_MR1 (17) is the first version supporting getLayoutDirection()
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+      Configuration configuration = view.getResources().getConfiguration();
+      if (configuration.getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
+        node.setDirection(YogaDirection.RTL);
+      }
+    }
+
+    Drawable background = view.getBackground();
+    if (background != null) {
+      final Rect backgroundPadding = new Rect();
+      if (background.getPadding(backgroundPadding)) {
+        node.setPadding(YogaEdge.LEFT, backgroundPadding.left);
+        node.setPadding(YogaEdge.TOP, backgroundPadding.top);
+        node.setPadding(YogaEdge.RIGHT, backgroundPadding.right);
+        node.setPadding(YogaEdge.BOTTOM, backgroundPadding.bottom);
+      }
+    }
+
+    for (int i = 0; i < layoutParameters.numericAttributes.size(); i++) {
+      final int attribute = layoutParameters.numericAttributes.keyAt(i);
+      final float value = layoutParameters.numericAttributes.valueAt(i);
+
+      if (attribute == R.styleable.yoga_yg_alignContent) {
+        node.setAlignContent(YogaAlign.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_alignItems) {
+        node.setAlignItems(YogaAlign.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_alignSelf) {
+        node.setAlignSelf(YogaAlign.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_aspectRatio) {
+        node.setAspectRatio(value);
+      } else if (attribute == R.styleable.yoga_yg_borderLeft) {
+        node.setBorder(YogaEdge.LEFT, value);
+      } else if (attribute == R.styleable.yoga_yg_borderTop) {
+        node.setBorder(YogaEdge.TOP, value);
+      } else if (attribute == R.styleable.yoga_yg_borderRight) {
+        node.setBorder(YogaEdge.RIGHT, value);
+      } else if (attribute == R.styleable.yoga_yg_borderBottom) {
+        node.setBorder(YogaEdge.BOTTOM, value);
+      } else if (attribute == R.styleable.yoga_yg_borderStart) {
+        node.setBorder(YogaEdge.START, value);
+      } else if (attribute == R.styleable.yoga_yg_borderEnd) {
+        node.setBorder(YogaEdge.END, value);
+      } else if (attribute == R.styleable.yoga_yg_borderHorizontal) {
+        node.setBorder(YogaEdge.HORIZONTAL, value);
+      } else if (attribute == R.styleable.yoga_yg_borderVertical) {
+        node.setBorder(YogaEdge.VERTICAL, value);
+      } else if (attribute == R.styleable.yoga_yg_borderAll) {
+        node.setBorder(YogaEdge.ALL, value);
+      } else if (attribute == R.styleable.yoga_yg_direction) {
+        node.setDirection(YogaDirection.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_display) {
+        node.setDisplay(YogaDisplay.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_flex) {
+        node.setFlex(value);
+      } else if (attribute == R.styleable.yoga_yg_flexBasis) {
+        node.setFlexBasis(value);
+      } else if (attribute == R.styleable.yoga_yg_flexDirection) {
+        node.setFlexDirection(YogaFlexDirection.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_flexGrow) {
+        node.setFlexGrow(value);
+      } else if (attribute == R.styleable.yoga_yg_flexShrink) {
+        node.setFlexShrink(value);
+      } else if (attribute == R.styleable.yoga_yg_height) {
+        node.setHeight(value);
+      } else if (attribute == R.styleable.yoga_yg_marginLeft) {
+        node.setMargin(YogaEdge.LEFT, value);
+      } else if (attribute == R.styleable.yoga_yg_justifyContent) {
+        node.setJustifyContent(YogaJustify.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_marginTop) {
+        node.setMargin(YogaEdge.TOP, value);
+      } else if (attribute == R.styleable.yoga_yg_marginRight) {
+        node.setMargin(YogaEdge.RIGHT, value);
+      } else if (attribute == R.styleable.yoga_yg_marginBottom) {
+        node.setMargin(YogaEdge.BOTTOM, value);
+      } else if (attribute == R.styleable.yoga_yg_marginStart) {
+        node.setMargin(YogaEdge.START, value);
+      } else if (attribute == R.styleable.yoga_yg_marginEnd) {
+        node.setMargin(YogaEdge.END, value);
+      } else if (attribute == R.styleable.yoga_yg_marginHorizontal) {
+        node.setMargin(YogaEdge.HORIZONTAL, value);
+      } else if (attribute == R.styleable.yoga_yg_marginVertical) {
+        node.setMargin(YogaEdge.VERTICAL, value);
+      } else if (attribute == R.styleable.yoga_yg_marginAll) {
+        node.setMargin(YogaEdge.ALL, value);
+      } else if (attribute == R.styleable.yoga_yg_maxHeight) {
+        node.setMaxHeight(value);
+      } else if (attribute == R.styleable.yoga_yg_maxWidth) {
+        node.setMaxWidth(value);
+      } else if (attribute == R.styleable.yoga_yg_minHeight) {
+        node.setMinHeight(value);
+      } else if (attribute == R.styleable.yoga_yg_minWidth) {
+        node.setMinWidth(value);
+      } else if (attribute == R.styleable.yoga_yg_overflow) {
+        node.setOverflow(YogaOverflow.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_paddingLeft) {
+        node.setPadding(YogaEdge.LEFT, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingTop) {
+        node.setPadding(YogaEdge.TOP, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingRight) {
+        node.setPadding(YogaEdge.RIGHT, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingBottom) {
+        node.setPadding(YogaEdge.BOTTOM, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingStart) {
+        node.setPadding(YogaEdge.START, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingEnd) {
+        node.setPadding(YogaEdge.END, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingHorizontal) {
+        node.setPadding(YogaEdge.HORIZONTAL, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingVertical) {
+        node.setPadding(YogaEdge.VERTICAL, value);
+      } else if (attribute == R.styleable.yoga_yg_paddingAll) {
+        node.setPadding(YogaEdge.ALL, value);
+      } else if (attribute == R.styleable.yoga_yg_positionLeft) {
+        node.setPosition(YogaEdge.LEFT, value);
+      } else if (attribute == R.styleable.yoga_yg_positionTop) {
+        node.setPosition(YogaEdge.TOP, value);
+      } else if (attribute == R.styleable.yoga_yg_positionRight) {
+        node.setPosition(YogaEdge.RIGHT, value);
+      } else if (attribute == R.styleable.yoga_yg_positionBottom) {
+        node.setPosition(YogaEdge.BOTTOM, value);
+      } else if (attribute == R.styleable.yoga_yg_positionStart) {
+        node.setPosition(YogaEdge.START, value);
+      } else if (attribute == R.styleable.yoga_yg_positionEnd) {
+        node.setPosition(YogaEdge.END, value);
+      } else if (attribute == R.styleable.yoga_yg_positionHorizontal) {
+        node.setPosition(YogaEdge.HORIZONTAL, value);
+      } else if (attribute == R.styleable.yoga_yg_positionVertical) {
+        node.setPosition(YogaEdge.VERTICAL, value);
+      } else if (attribute == R.styleable.yoga_yg_positionAll) {
+        node.setPosition(YogaEdge.ALL, value);
+      } else if (attribute == R.styleable.yoga_yg_positionType) {
+        node.setPositionType(YogaPositionType.fromInt(Math.round(value)));
+      } else if (attribute == R.styleable.yoga_yg_width) {
+        node.setWidth(value);
+      } else if (attribute == R.styleable.yoga_yg_wrap) {
+        node.setWrap(YogaWrap.fromInt(Math.round(value)));
+      }
+    }
+
+    for (int i = 0; i < layoutParameters.stringAttributes.size(); i++) {
+      final int attribute = layoutParameters.stringAttributes.keyAt(i);
+      final String value = layoutParameters.stringAttributes.valueAt(i);
+
+      if (value.equals("auto")) {
+        if (attribute == R.styleable.yoga_yg_marginLeft) {
+          node.setMarginAuto(YogaEdge.LEFT);
+        } else if (attribute == R.styleable.yoga_yg_marginTop) {
+          node.setMarginAuto(YogaEdge.TOP);
+        } else if (attribute == R.styleable.yoga_yg_marginRight) {
+          node.setMarginAuto(YogaEdge.RIGHT);
+        } else if (attribute == R.styleable.yoga_yg_marginBottom) {
+          node.setMarginAuto(YogaEdge.BOTTOM);
+        } else if (attribute == R.styleable.yoga_yg_marginStart) {
+          node.setMarginAuto(YogaEdge.START);
+        } else if (attribute == R.styleable.yoga_yg_marginEnd) {
+          node.setMarginAuto(YogaEdge.END);
+        } else if (attribute == R.styleable.yoga_yg_marginHorizontal) {
+          node.setMarginAuto(YogaEdge.HORIZONTAL);
+        } else if (attribute == R.styleable.yoga_yg_marginVertical) {
+          node.setMarginAuto(YogaEdge.VERTICAL);
+        } else if (attribute == R.styleable.yoga_yg_marginAll) {
+          node.setMarginAuto(YogaEdge.ALL);
+        }
+      }
+
+      if (value.endsWith("%")) {
+        final float numericValue = Float.parseFloat(value.substring(0, value.length()-1));
+
+        if (attribute == R.styleable.yoga_yg_flexBasis) {
+          node.setFlexBasisPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_height) {
+          node.setHeightPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginLeft) {
+          node.setMarginPercent(YogaEdge.LEFT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginTop) {
+          node.setMarginPercent(YogaEdge.TOP, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginRight) {
+          node.setMarginPercent(YogaEdge.RIGHT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginBottom) {
+          node.setMarginPercent(YogaEdge.BOTTOM, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginStart) {
+          node.setMarginPercent(YogaEdge.START, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginEnd) {
+          node.setMarginPercent(YogaEdge.END, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginHorizontal) {
+          node.setMarginPercent(YogaEdge.HORIZONTAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginVertical) {
+          node.setMarginPercent(YogaEdge.VERTICAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_marginAll) {
+          node.setMarginPercent(YogaEdge.ALL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_maxHeight) {
+          node.setMaxHeightPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_maxWidth) {
+          node.setMaxWidthPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_minHeight) {
+          node.setMinHeightPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_minWidth) {
+          node.setMinWidthPercent(numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingLeft) {
+          node.setPaddingPercent(YogaEdge.LEFT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingTop) {
+          node.setPaddingPercent(YogaEdge.TOP, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingRight) {
+          node.setPaddingPercent(YogaEdge.RIGHT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingBottom) {
+          node.setPaddingPercent(YogaEdge.BOTTOM, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingStart) {
+          node.setPaddingPercent(YogaEdge.START, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingEnd) {
+          node.setPaddingPercent(YogaEdge.END, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingHorizontal) {
+          node.setPaddingPercent(YogaEdge.HORIZONTAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingVertical) {
+          node.setPaddingPercent(YogaEdge.VERTICAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_paddingAll) {
+          node.setPaddingPercent(YogaEdge.ALL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionLeft) {
+          node.setPositionPercent(YogaEdge.LEFT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionTop) {
+          node.setPositionPercent(YogaEdge.TOP, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionRight) {
+          node.setPositionPercent(YogaEdge.RIGHT, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionBottom) {
+          node.setPositionPercent(YogaEdge.BOTTOM, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionStart) {
+          node.setPositionPercent(YogaEdge.START, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionEnd) {
+          node.setPositionPercent(YogaEdge.END, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionHorizontal) {
+          node.setPositionPercent(YogaEdge.HORIZONTAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionVertical) {
+          node.setPositionPercent(YogaEdge.VERTICAL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_positionAll) {
+          node.setPositionPercent(YogaEdge.ALL, numericValue);
+        } else if (attribute == R.styleable.yoga_yg_width) {
+          node.setWidthPercent(numericValue);
+        }
+      }
+    }
+  }
+
+  @Override
+  public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
+    return new YogaLayout.LayoutParams(getContext(), attrs);
+  }
+
+  @Override
+  protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
+    return new YogaLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
+                                       ViewGroup.LayoutParams.MATCH_PARENT);
+  }
+
+  @Override
+  protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
+    return new YogaLayout.LayoutParams(p);
+  }
+
+  @Override
+  protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
+    return p instanceof LayoutParams;
+  }
+
+  /**
+   * {@code YogaLayout.LayoutParams} are used by views to tell {@link YogaLayout} how they want to
+   * be laid out.  More precisely, the specify the yoga parameters of the view.
+   *
+   * <p>
+   * This is actually mostly a wrapper around a {@code SparseArray} that holds a mapping between
+   * styleable id's ({@code R.styleable.yoga_yg_*}) and the float of their values.  In cases where
+   * the value is an enum or an integer, they should first be cast to int (with rounding) before
+   * using.
+   */
+  public static class LayoutParams extends ViewGroup.LayoutParams {
+
+    /**
+     * A mapping from attribute keys ({@code R.styleable.yoga_yg_*}) to the float of their values.
+     * For attributes like position_percent_left (float), this is the native type.  For attributes
+     * like align_self (enums), the integer enum value is cast (rounding is used on the other side
+     * to prevent precision errors).  Dimension attributes are stored as float pixels.
+     */
+    SparseArray<Float> numericAttributes;
+
+    /**
+     * A mapping from attribute keys ({@code R.styleable.yoga_yg_*}) with string values to those
+     * strings.  This is used for values such as "auto".
+     */
+    SparseArray<String> stringAttributes;
+
+    /**
+     * Constructs a set of layout params from a source set.  In the case that the source set is
+     * actually a {@link YogaLayout.LayoutParams}, we can copy all the yoga attributes.  Otherwise
+     * we start with a blank slate.
+     *
+     * @param source The layout params to copy from
+     */
+    public LayoutParams(ViewGroup.LayoutParams source) {
+      super(source);
+      if (source instanceof LayoutParams) {
+        numericAttributes = ((LayoutParams) source).numericAttributes.clone();
+        stringAttributes = ((LayoutParams) source).stringAttributes.clone();
+      } else {
+        numericAttributes = new SparseArray<>();
+        stringAttributes = new SparseArray<>();
+
+        // Negative values include MATCH_PARENT and WRAP_CONTENT
+        if (source.width >= 0) {
+          numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
+        }
+        if (source.height >= 0) {
+          numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
+        }
+      }
+    }
+
+    /**
+     * Constructs a set of layout params, given width and height specs.  In this case, we can set
+     * the {@code yoga:width} and {@code yoga:height} if we are given them explicitly.  If other
+     * options (such as {@code match_owner} or {@code wrap_content} are given, then the owner
+     * LayoutParams will store them, and we deal with them during layout. (see
+     * {@link YogaLayout#createLayout})
+     *
+     * @param width the requested width, either a pixel size, {@code WRAP_CONTENT} or
+     *        {@code MATCH_PARENT}.
+     * @param height the requested height, either a pixel size, {@code WRAP_CONTENT} or
+     *        {@code MATCH_PARENT}.
+     */
+    public LayoutParams(int width, int height) {
+      super(width, height);
+      numericAttributes = new SparseArray<>();
+      stringAttributes = new SparseArray<>();
+      // Negative values include MATCH_PARENT and WRAP_CONTENT
+      if (width >= 0) {
+        numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
+      }
+      if (height >= 0) {
+        numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
+      }
+    }
+
+    /**
+     * Constructs a set of layout params, given attributes.  Grabs all the {@code yoga:*}
+     * defined in {@code ALL_YOGA_ATTRIBUTES} and collects the ones that are set in {@code attrs}.
+     *
+     * @param context the application environment
+     * @param attrs the set of attributes from which to extract the yoga specific attributes
+     */
+    public LayoutParams(Context context, AttributeSet attrs) {
+      super(context, attrs);
+      numericAttributes = new SparseArray<>();
+      stringAttributes = new SparseArray<>();
+      final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.yoga);
+
+      // Negative values include MATCH_PARENT and WRAP_CONTENT
+      if (width >= 0) {
+        numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
+      }
+      if (height >= 0) {
+        numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
+      }
+
+      final int attributeCount = a.getIndexCount();
+      for (int i = 0; i < attributeCount; i++) {
+        final int attribute = a.getIndex(i);
+        final TypedValue val = new TypedValue();
+        a.getValue(attribute, val);
+
+        if (val.type == TypedValue.TYPE_DIMENSION) {
+          numericAttributes.put(
+              attribute,
+              (float) a.getDimensionPixelSize(attribute, 0));
+        } else if (val.type == TypedValue.TYPE_STRING) {
+          stringAttributes.put(attribute, a.getString(attribute));
+        } else {
+          numericAttributes.put(attribute, a.getFloat(attribute, 0));
+        }
+      }
+      a.recycle();
+    }
+  }
+
+  /**
+   * Wrapper around measure function for yoga leaves.
+   */
+  public static class ViewMeasureFunction implements YogaMeasureFunction {
+
+    /**
+     * A function to measure leaves of the Yoga tree.  Yoga needs some way to know how large
+     * elements want to be.  This function passes that question directly through to the relevant
+     * {@code View}'s measure function.
+     *
+     * @param node The yoga node to measure
+     * @param width The suggested width from the owner
+     * @param widthMode The type of suggestion for the width
+     * @param height The suggested height from the owner
+     * @param heightMode The type of suggestion for the height
+     * @return A measurement output ({@code YogaMeasureOutput}) for the node
+     */
+    public long measure(
+        YogaNode node,
+        float width,
+        YogaMeasureMode widthMode,
+        float height,
+        YogaMeasureMode heightMode) {
+      final View view = (View) node.getData();
+      if (view == null || view instanceof YogaLayout) {
+        return YogaMeasureOutput.make(0, 0);
+      }
+
+      final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(
+          (int) width,
+          viewMeasureSpecFromYogaMeasureMode(widthMode));
+      final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(
+          (int) height,
+          viewMeasureSpecFromYogaMeasureMode(heightMode));
+
+      view.measure(widthMeasureSpec, heightMeasureSpec);
+
+      return YogaMeasureOutput.make(view.getMeasuredWidth(), view.getMeasuredHeight());
+    }
+
+    private int viewMeasureSpecFromYogaMeasureMode(YogaMeasureMode mode) {
+      if (mode == YogaMeasureMode.AT_MOST) {
+        return MeasureSpec.AT_MOST;
+      } else if (mode == YogaMeasureMode.EXACTLY) {
+        return MeasureSpec.EXACTLY;
+      } else {
+        return MeasureSpec.UNSPECIFIED;
+      }
+    }
+  }
+}

android/src/main/java/com/facebook/yoga/android/YogaViewLayoutFactory.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.yoga.android;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+
+/**
+ * A layout inflater factory.  This provides our custom {@link YogaViewLayoutFactory#onCreateView}
+ * to the XML inflation system, allowing us to replace XML tags.
+ */
+public class YogaViewLayoutFactory implements LayoutInflater.Factory {
+  private static YogaViewLayoutFactory sYogaViewLayoutFactory;
+
+  /**
+   * Obtains (and initialises if necessary) the singleton {@link YogaViewLayoutFactory}.
+   *
+   * @return The singleton instance
+   */
+  public static YogaViewLayoutFactory getInstance() {
+    if (sYogaViewLayoutFactory == null) {
+      sYogaViewLayoutFactory = new YogaViewLayoutFactory();
+    }
+    return sYogaViewLayoutFactory;
+  }
+
+  YogaViewLayoutFactory() {}
+
+  /**
+   * Hook for inflating from a LayoutInflater.  This hook replaces the cumbersome
+   * {@code com.facebook.etc.YogaLayout} with simply {@code YogaLayout} in your XML and the same
+   * with {@code VirtualYogaLayout}.
+   *
+   * @param name Tag name to be inflated.
+   * @param context The context the view is being created in.
+   * @param attrs Inflation attributes as specified in XML file.
+   *
+   * @return View Newly created view. Return null for the default behavior.
+   */
+  @Override
+  public View onCreateView(String name, Context context, AttributeSet attrs) {
+    if (YogaLayout.class.getSimpleName().equals(name)) {
+      return new YogaLayout(context, attrs);
+    }
+    if (VirtualYogaLayout.class.getSimpleName().equals(name)) {
+      return new VirtualYogaLayout(context, attrs);
+    }
+    return null;
+  }
+}

android/src/main/res/values/attrs.xml

@@ -0,0 +1,150 @@
+<?xml version="1.0" encoding="utf-8" ?>
+
+<!--
+  Copyright (c) Facebook, Inc. and its affiliates.
+
+  This source code is licensed under the MIT license found in the
+  LICENSE file in the root directory of this source tree.
+-->
+
+<resources>
+  <declare-styleable name="yoga">
+
+    <attr name="yg_alignContent" format="enum">
+      <enum name="auto" value="0"/>
+      <enum name="flex_start" value="1"/>
+      <enum name="center" value="2"/>
+      <enum name="flex_end" value="3"/>
+      <enum name="stretch" value="4"/>
+      <enum name="baseline" value="5"/>
+    </attr>
+
+    <attr name="yg_alignItems" format="enum">
+      <enum name="auto" value="0"/>
+      <enum name="flex_start" value="1"/>
+      <enum name="center" value="2"/>
+      <enum name="flex_end" value="3"/>
+      <enum name="stretch" value="4"/>
+      <enum name="baseline" value="5"/>
+    </attr>
+
+    <attr name="yg_alignSelf" format="enum">
+      <enum name="auto" value="0"/>
+      <enum name="flex_start" value="1"/>
+      <enum name="center" value="2"/>
+      <enum name="flex_end" value="3"/>
+      <enum name="stretch" value="4"/>
+      <enum name="baseline" value="5"/>
+    </attr>
+
+    <attr name="yg_aspectRatio" format="float"/>
+
+    <attr name="yg_borderLeft" format="dimension"/>
+    <attr name="yg_borderTop" format="dimension"/>
+    <attr name="yg_borderRight" format="dimension"/>
+    <attr name="yg_borderBottom" format="dimension"/>
+    <attr name="yg_borderStart" format="dimension"/>
+    <attr name="yg_borderEnd" format="dimension"/>
+    <attr name="yg_borderHorizontal" format="dimension"/>
+    <attr name="yg_borderVertical" format="dimension"/>
+    <attr name="yg_borderAll" format="dimension"/>
+
+    <attr name="yg_direction" format="enum">
+      <enum name="inherit" value="0"/>
+      <enum name="ltr" value="1"/>
+      <enum name="rtl" value="2"/>
+    </attr>
+
+    <attr name="yg_display" format="enum">
+      <enum name="flex" value="0"/>
+      <enum name="none" value="1"/>
+    </attr>
+
+    <attr name="yg_flex" format="float"/>
+
+    <attr name="yg_flexBasis" format="float|string"/>
+
+    <attr name="yg_flexDirection" format="enum">
+      <enum name="column" value="0"/>
+      <enum name="column_reverse" value="1"/>
+      <enum name="row" value="2"/>
+      <enum name="row_reverse" value="3"/>
+    </attr>
+
+    <attr name="yg_flexGrow" format="float"/>
+
+    <attr name="yg_flexShrink" format="float"/>
+
+    <attr name="yg_height" format="dimension|string"/>
+
+    <attr name="yg_justifyContent" format="enum">
+      <enum name="flex_start" value="0"/>
+      <enum name="center" value="1"/>
+      <enum name="flex_end" value="2"/>
+      <enum name="space_between" value="3"/>
+      <enum name="space_around" value="4"/>
+    </attr>
+
+    <attr name="yg_marginLeft" format="dimension|string"/>
+    <attr name="yg_marginTop" format="dimension|string"/>
+    <attr name="yg_marginRight" format="dimension|string"/>
+    <attr name="yg_marginBottom" format="dimension|string"/>
+    <attr name="yg_marginStart" format="dimension|string"/>
+    <attr name="yg_marginEnd" format="dimension|string"/>
+    <attr name="yg_marginHorizontal" format="dimension|string"/>
+    <attr name="yg_marginVertical" format="dimension|string"/>
+    <attr name="yg_marginAll" format="dimension|string"/>
+
+    <attr name="yg_maxHeight" format="dimension|string"/>
+
+    <attr name="yg_maxWidth" format="dimension|string"/>
+
+    <attr name="yg_minHeight" format="dimension|string"/>
+
+    <attr name="yg_minWidth" format="dimension|string"/>
+
+    <attr name="yg_overflow" format="enum">
+      <enum name="visible" value="0"/>
+      <enum name="hidden" value="1"/>
+      <enum name="scroll" value="2"/>
+    </attr>
+
+    <attr name="yg_paddingLeft" format="dimension|string"/>
+    <attr name="yg_paddingTop" format="dimension|string"/>
+    <attr name="yg_paddingRight" format="dimension|string"/>
+    <attr name="yg_paddingBottom" format="dimension|string"/>
+    <attr name="yg_paddingStart" format="dimension|string"/>
+    <attr name="yg_paddingEnd" format="dimension|string"/>
+    <attr name="yg_paddingHorizontal" format="dimension|string"/>
+    <attr name="yg_paddingVertical" format="dimension|string"/>
+    <attr name="yg_paddingAll" format="dimension|string"/>
+
+    <attr name="yg_positionLeft" format="dimension|string"/>
+    <attr name="yg_positionTop" format="dimension|string"/>
+    <attr name="yg_positionRight" format="dimension|string"/>
+    <attr name="yg_positionBottom" format="dimension|string"/>
+    <attr name="yg_positionStart" format="dimension|string"/>
+    <attr name="yg_positionEnd" format="dimension|string"/>
+    <attr name="yg_positionHorizontal" format="dimension|string"/>
+    <attr name="yg_positionVertical" format="dimension|string"/>
+    <attr name="yg_positionAll" format="dimension|string"/>
+
+    <attr name="yg_positionType" format="enum">
+      <!-- "static" is a reserved keyword
+      <enum name="static" value="0"/>
+      -->
+      <enum name="relative" value="1"/>
+      <enum name="absolute" value="2"/>
+      <enum name="position_static" value="0"/>
+      <enum name="position_relative" value="1"/>
+      <enum name="position_absolute" value="2"/>
+    </attr>
+
+    <attr name="yg_width" format="dimension|string"/>
+
+    <attr name="yg_wrap" format="enum">
+      <enum name="no_wrap" value="0"/>
+      <enum name="wrap" value="1"/>
+    </attr>
+  </declare-styleable>
+</resources>

benchmark/BUCK

@@ -1,27 +0,0 @@
-# Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
-# of patent rights can be found in the PATENTS file in the same directory.
-
-include_defs('//YOGA_DEFS')
-
-cxx_binary(
-  name = 'benchmark',
-  srcs = glob(['*.c']),
-  headers = subdir_glob([('', '*.h')]),
-  header_namespace = '',
-  compiler_flags = [
-    '-fno-omit-frame-pointer',
-    '-fexceptions',
-    '-Wall',
-    '-Werror',
-    '-O3',
-    '-std=c11',
-  ],
-  deps = [
-    yoga_dep(':yoga'),
-  ],
-  visibility = ['PUBLIC'],
-)

benchmark/CMakeLists.txt

@@ -0,0 +1,19 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+
+cmake_minimum_required(VERSION 3.13...3.26)
+project(benchmark)
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+set(YOGA_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/..)
+include(${YOGA_ROOT}/cmake/project-defaults.cmake)
+
+add_subdirectory(${YOGA_ROOT}/yoga ${CMAKE_CURRENT_BINARY_DIR}/yoga)
+
+file(GLOB SOURCES CONFIGURE_DEPENDS
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.c)
+add_executable(benchmark ${SOURCES})
+target_link_libraries(benchmark yogacore)

benchmark/YGBenchmark.c

@@ -1,29 +1,93 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
-#include "YGBenchmark.h"
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
 
 #include <yoga/Yoga.h>
 
-static YGSize _measure(YGNodeRef node,
-                        float width,
-                        YGMeasureMode widthMode,
-                        float height,
-                        YGMeasureMode heightMode) {
+#define NUM_REPETITIONS 1000
+
+#define YGBENCHMARKS(BLOCK)                \
+  int main(int argc, char const* argv[]) { \
+    (void) argc;                           \
+    (void) argv;                           \
+    clock_t __start;                       \
+    clock_t __endTimes[NUM_REPETITIONS];   \
+    { BLOCK }                              \
+    return 0;                              \
+  }
+
+#define YGBENCHMARK(NAME, BLOCK)                         \
+  __start = clock();                                     \
+  for (uint32_t __i = 0; __i < NUM_REPETITIONS; __i++) { \
+    {BLOCK} __endTimes[__i] = clock();                   \
+  }                                                      \
+  __printBenchmarkResult(NAME, __start, __endTimes);
+
+static int __compareDoubles(const void* a, const void* b) {
+  double arg1 = *(const double*) a;
+  double arg2 = *(const double*) b;
+
+  if (arg1 < arg2) {
+    return -1;
+  }
+
+  if (arg1 > arg2) {
+    return 1;
+  }
+
+  return 0;
+}
+
+static void __printBenchmarkResult(
+    char* name,
+    clock_t start,
+    clock_t* endTimes) {
+  double timesInMs[NUM_REPETITIONS];
+  double mean = 0;
+  clock_t lastEnd = start;
+  for (uint32_t i = 0; i < NUM_REPETITIONS; i++) {
+    timesInMs[i] = (endTimes[i] - lastEnd) / (double) CLOCKS_PER_SEC * 1000;
+    lastEnd = endTimes[i];
+    mean += timesInMs[i];
+  }
+  mean /= NUM_REPETITIONS;
+
+  qsort(timesInMs, NUM_REPETITIONS, sizeof(double), __compareDoubles);
+  double median = timesInMs[NUM_REPETITIONS / 2];
+
+  double variance = 0;
+  for (uint32_t i = 0; i < NUM_REPETITIONS; i++) {
+    variance += pow(timesInMs[i] - mean, 2);
+  }
+  variance /= NUM_REPETITIONS;
+  double stddev = sqrt(variance);
+
+  printf("%s: median: %lf ms, stddev: %lf ms\n", name, median, stddev);
+}
+
+static YGSize _measure(
+    YGNodeRef node,
+    float width,
+    YGMeasureMode widthMode,
+    float height,
+    YGMeasureMode heightMode) {
+  (void) node;
   return (YGSize){
       .width = widthMode == YGMeasureModeUndefined ? 10 : width,
-      .height = heightMode == YGMeasureModeUndefined ? 10 : width,
+      .height = heightMode == YGMeasureModeUndefined ? 10 : height,
   };
 }
 
 YGBENCHMARKS({
-
   YGBENCHMARK("Stack with flex", {
     const YGNodeRef root = YGNodeNew();
     YGNodeStyleSetWidth(root, 100);
@@ -99,9 +163,10 @@ YGBENCHMARKS({
           YGNodeStyleSetHeight(grandGrandChild, 10);
           YGNodeInsertChild(grandChild, grandGrandChild, 0);
 
-          for (uint32_t iii = 0; iii < 10; iii++) {
+          for (uint32_t iiii = 0; iiii < 10; iiii++) {
             const YGNodeRef grandGrandGrandChild = YGNodeNew();
-            YGNodeStyleSetFlexDirection(grandGrandGrandChild, YGFlexDirectionRow);
+            YGNodeStyleSetFlexDirection(
+                grandGrandGrandChild, YGFlexDirectionRow);
             YGNodeStyleSetFlexGrow(grandGrandGrandChild, 1);
             YGNodeStyleSetWidth(grandGrandGrandChild, 10);
             YGNodeStyleSetHeight(grandGrandGrandChild, 10);
@@ -114,5 +179,4 @@ YGBENCHMARKS({
     YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
     YGNodeFreeRecursive(root);
   });
-
 });

benchmark/YGBenchmark.h

@@ -1,73 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#pragma once
-
-#include <math.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-
-#define NUM_REPETITIONS 1000
-
-#define YGBENCHMARKS(BLOCK)              \
-  int main(int argc, char const *argv[]) { \
-    clock_t __start;                       \
-    clock_t __endTimes[NUM_REPETITIONS];   \
-    { BLOCK }                              \
-    return 0;                              \
-  }
-
-#define YGBENCHMARK(NAME, BLOCK)                       \
-  __start = clock();                                     \
-  for (uint32_t __i = 0; __i < NUM_REPETITIONS; __i++) { \
-    { BLOCK }                                            \
-    __endTimes[__i] = clock();                           \
-  }                                                      \
-  __printBenchmarkResult(NAME, __start, __endTimes);
-
-int __compareDoubles(const void *a, const void *b) {
-  double arg1 = *(const double *) a;
-  double arg2 = *(const double *) b;
-
-  if (arg1 < arg2) {
-    return -1;
-  }
-
-  if (arg1 > arg2) {
-    return 1;
-  }
-
-  return 0;
-}
-
-void __printBenchmarkResult(char *name, clock_t start, clock_t *endTimes) {
-  double timesInMs[NUM_REPETITIONS];
-  double mean = 0;
-  clock_t lastEnd = start;
-  for (uint32_t i = 0; i < NUM_REPETITIONS; i++) {
-    timesInMs[i] = (endTimes[i] - lastEnd) / (double) CLOCKS_PER_SEC * 1000;
-    lastEnd = endTimes[i];
-    mean += timesInMs[i];
-  }
-  mean /= NUM_REPETITIONS;
-
-  qsort(timesInMs, NUM_REPETITIONS, sizeof(double), __compareDoubles);
-  double median = timesInMs[NUM_REPETITIONS / 2];
-
-  double variance = 0;
-  for (uint32_t i = 0; i < NUM_REPETITIONS; i++) {
-    variance += pow(timesInMs[i] - mean, 2);
-  }
-  variance /= NUM_REPETITIONS;
-  double stddev = sqrt(variance);
-
-  printf("%s: median: %lf ms, stddev: %lf ms\n", name, median, stddev);
-}

build-logic/build.gradle.kts

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+plugins { `kotlin-dsl` }
+
+repositories {
+  mavenCentral()
+  gradlePluginPortal()
+}

build-logic/src/main/kotlin/publish.gradle.kts

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+plugins {
+  id("maven-publish")
+  id("signing")
+}
+
+group = "com.facebook.yoga"
+
+if ("USE_SNAPSHOT".byProperty.toBoolean()) {
+  version = "${"VERSION_NAME".byProperty}-SNAPSHOT"
+} else {
+  version = "VERSION_NAME".byProperty.toString()
+}
+
+publishing {
+  publications {
+    register<MavenPublication>("default") {
+      groupId = project.group.toString()
+      artifactId = project.name
+      version = project.version.toString()
+      afterEvaluate { from(components["default"]) }
+      pom {
+        description.set(
+            "An embeddable and performant flexbox layout engine with bindings for multiple languages")
+        name.set(project.name)
+        url.set("https://github.com/facebook/yoga.git")
+        licenses {
+          license {
+            name.set("MIT License")
+            url.set("https://github.com/facebook/yoga/blob/main/LICENSE")
+            distribution.set("repo")
+          }
+        }
+        developers {
+          developer {
+            id.set("Meta Open Source")
+            name.set("Meta Open Source")
+            email.set("opensource@meta.com")
+          }
+        }
+        scm { url.set("scm:git:git@github.com:facebook/yoga.git") }
+      }
+    }
+  }
+}
+
+val signingKey = "SIGNING_KEY".byProperty
+val signingPwd = "SIGNING_PWD".byProperty
+
+if (signingKey.isNullOrBlank() || signingPwd.isNullOrBlank()) {
+  logger.info("Signing disabled as the GPG key was not found")
+} else {
+  logger.info("GPG Key found - Signing enabled")
+}
+
+signing {
+  useInMemoryPgpKeys(signingKey, signingPwd)
+  sign(publishing.publications)
+  isRequired = !(signingKey.isNullOrBlank() || signingPwd.isNullOrBlank())
+}
+
+// Fix for https://youtrack.jetbrains.com/issue/KT-46466/
+// On Gradle 8+, the signing task is not correctly wired to the publishing tasks.
+// This requires a fix on KGP that is currently pending.
+val signingTasks = tasks.withType<Sign>()
+
+tasks.withType<AbstractPublishToMaven>().configureEach { dependsOn(signingTasks) }
+
+val String.byProperty: String?
+  get() = providers.gradleProperty(this).orNull

build.gradle

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+plugins {
+    id("com.android.library") version "8.0.1" apply false
+    id("com.android.application") version "8.0.1" apply false
+    id("io.github.gradle-nexus.publish-plugin") version "1.3.0"
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+group = "com.facebook.yoga"
+
+if (project.hasProperty("USE_SNAPSHOT") && project.property("USE_SNAPSHOT").toBoolean()) {
+    version = getProperty("VERSION_NAME") + "-SNAPSHOT"
+} else {
+    version = getProperty("VERSION_NAME")
+}
+
+def sonatypeUsername = findProperty("SONATYPE_USERNAME")?.toString()
+def sonatypePassword = findProperty("SONATYPE_PASSWORD")?.toString()
+
+nexusPublishing {
+    repositories {
+        sonatype {
+            username.set(sonatypeUsername)
+            password.set(sonatypePassword)
+        }
+    }
+}
+
+ext {
+    buildToolsVersion = "33.0.0"
+    ndkVersion = "23.1.7779620"
+    minSdkVersion = 21
+    compileSdkVersion = 33
+    targetSdkVersion = 33
+    sourceCompatibilityVersion = JavaVersion.VERSION_1_8
+    targetCompatibilityVersion = JavaVersion.VERSION_1_8
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

cmake/project-defaults.cmake

@@ -0,0 +1,51 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+add_compile_definitions($<$<CONFIG:DEBUG>:DEBUG>)
+
+if(MSVC)
+
+add_compile_options(
+    # Don't omit frame pointers (e.g. for crash dumps)
+    /Oy-
+    # "Standard C++ exception handling" (C++ stack unwinding including extern c)
+    /EHsc
+    # Enable warnings and warnings as errors
+    /W3
+    /WX
+    # Disable RTTI
+    $<$<COMPILE_LANGUAGE:CXX>:/GR->
+    # Use /O2 (Maximize Speed)
+    $<$<CONFIG:RELEASE>:/O2>)
+
+else()
+
+add_compile_options(
+    # Don't omit frame pointers (e.g. for crash dumps)
+    -fno-omit-frame-pointer
+    # Enable exception handling
+    -fexceptions
+    # Enable warnings and warnings as errors
+    -Wall
+    -Wextra
+    -Werror
+    # Disable RTTI
+    $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
+    # Use -O2 (prioritize speed)
+    $<$<CONFIG:RELEASE>:-O2>
+    # Enable separate sections per function/data item
+    $<$<CONFIG:RELEASE>:-ffunction-sections>
+    $<$<CONFIG:RELEASE>:-fdata-sections>)
+
+add_link_options(
+    # Discard unused sections
+    $<$<CONFIG:RELEASE>:$<$<CXX_COMPILER_ID:Clang,GNU>:-Wl,--gc-sections>>
+    $<$<CONFIG:RELEASE>:$<$<CXX_COMPILER_ID:AppleClang>:-Wl,-dead_strip>>)
+
+endif()

cmake/yoga-config.cmake.in

@@ -0,0 +1,10 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/yogaTargets.cmake")
+
+check_required_components(yoga)

csharp/.gitignore

@@ -1,269 +0,0 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-
-# User-specific files
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-bld/
-[Bb]in/
-[Oo]bj/
-[Ll]og/
-
-# Visual Studio 2015 cache/options directory
-.vs/
-# Uncomment if you have tasks that create the project's static files in wwwroot
-#wwwroot/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUNIT
-*.VisualState.xml
-TestResult.xml
-tests/Facebook.Yoga/NUnit-[0-9\.]*/
-tests/Facebook.Yoga/YogaTest.dll
-tests/Facebook.Yoga/YogaTest.dll.mdb
-tests/Facebook.Yoga/libyoga.dylib
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-# DNX
-project.lock.json
-project.fragment.lock.json
-artifacts/
-
-*_i.c
-*_p.c
-*_i.h
-*.ilk
-*.meta
-*.obj
-*.pch
-*.pdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-*.VC.db
-*.VC.VC.opendb
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-*.sap
-
-# TFS 2012 Local Workspace
-$tf/
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# JustCode is a .NET coding add-in
-.JustCode
-
-# TeamCity is a build add-in
-_TeamCity*
-
-# DotCover is a Code Coverage Tool
-*.dotCover
-
-# Visual Studio code coverage results
-*.coverage
-*.coveragexml
-
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-nCrunchTemp_*
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-# TODO: Comment the next line if you want to checkin your web deploy settings
-# but database connection strings (with potential passwords) will be unencrypted
-*.pubxml
-*.publishproj
-
-# Microsoft Azure Web App publish settings. Comment the next line if you want to
-# checkin your Azure Web App publish settings, but sensitive information contained
-# in these scripts will be unencrypted
-PublishScripts/
-
-# NuGet Packages
-*.nupkg
-# The packages folder can be ignored because of Package Restore
-**/packages/*
-# except build/, which is used as an MSBuild target.
-!**/packages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/packages/repositories.config
-# NuGet v3's project.json files produces more ignoreable files
-*.nuget.props
-*.nuget.targets
-
-# Microsoft Azure Build Output
-csx/
-*.build.csdef
-
-# Microsoft Azure Emulator
-ecf/
-rcf/
-
-# Windows Store app package directories and files
-AppPackages/
-BundleArtifacts/
-Package.StoreAssociation.xml
-_pkginfo.txt
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/
-
-# Others
-ClientBin/
-~$*
-*~
-*.dbmdl
-*.dbproj.schemaview
-*.jfm
-*.pfx
-*.publishsettings
-node_modules/
-orleans.codegen.cs
-
-# Since there are multiple workflows, uncomment next line to ignore bower_components
-# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
-#bower_components/
-
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-
-# SQL Server files
-*.mdf
-*.ldf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-
-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-
-# Visual Studio 6 build log
-*.plg
-
-# Visual Studio 6 workspace options file
-*.opt
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
-**/*.DesktopClient/ModelManifest.xml
-**/*.Server/GeneratedArtifacts
-**/*.Server/ModelManifest.xml
-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-paket-files/
-
-# FAKE - F# Make
-.fake/
-
-# JetBrains Rider
-.idea/
-*.sln.iml
-
-# CodeRush
-.cr/
-
-# Python Tools for Visual Studio (PTVS)
-__pycache__/
-*.pyc