1.8.0

Summary: New release.

Reviewed By: marco-cova

Differential Revision: D7550852

fbshipit-source-id: eac5662179daa88d9d62c55566b3a31428c4117a

.buckconfig

@@ -1,9 +1,10 @@
 [cxx]
   gtest_dep = //lib/gtest:gtest
 [android]
-  target = Google Inc.:Google APIs:19
+  target = android-25
+  build_tools_version = 26.0.2
 [ndk]
-  ndk_version = r10e
+  ndk_version = 15.2.4203891
   compiler = clang
-  app_platform = android-19
+  app_platform = android-21
-  cpu_abis = armv7, x86
+  cpu_abis = arm64, armv7, x86, x86_64

.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

.gitignore

@@ -63,3 +63,5 @@ Carthage/Build
 
 # Gradle
 .gradle
+# NDK/CMake
+.externalNativeBuild

.travis.yml

@@ -1,118 +1,25 @@
-# Copyright (c) 2014-present, Facebook, Inc.
+language: node_js
-# All rights reserved.
+node_js:
-#
+  - "8"
-# 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
+install:
-osx_image: xcode8.2
+- cd website
-language: cpp
+- yarn --ignore-scripts
-compiler: clang
+- cd ..
-
-env:
-  - TARGET=c
-  - TARGET=java
-  - TARGET=net
-  - TARGET=ios
-  - TARGET=js
-  - TARGET=android
-
-before_install:
-  - brew update > /dev/null
-  - brew tap facebook/fb
-  - brew install buck
-
-  # Java
-  - |
-    if [[ $TARGET = "java" ]]; then
-      brew cask install java &&
-      export JAVA_HOME=$(/usr/libexec/java_home -v 1.8) &&
-      export PATH=$JAVA_HOME/bin:$PATH
-    fi
-
-  # .NET
-  - |
-    if [[ $TARGET = "net" ]]; then
-      brew install mono
-    fi
-
-  # iOS
-  - |
-    if [[ $TARGET = "ios" ]]; then
-      brew outdated xctool || brew upgrade xctool
-    fi
-
-  # Emscripten (used for js tests)
-  # Note: cannot be ran on Linux (because it will compile Clang from its sources :|)
-  - |
-    if [[ $TARGET = "js" ]]; then
-      wget -O /tmp/emsdk-portable.tar.gz https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz &&
-      tar xf /tmp/emsdk-portable.tar.gz -C /tmp/ &&
-      /tmp/emsdk_portable/emsdk install latest >& /dev/null &&
-      /tmp/emsdk_portable/emsdk activate latest
-    fi
-
-  # Android
-  - |
-    if [[ $TARGET = "android" ]]; then
-      brew cask install java &&
-      export JAVA_HOME=$(/usr/libexec/java_home -v 1.8) &&
-      export PATH=$JAVA_HOME/bin:$PATH &&
-      brew install android-sdk &&
-      export ANDROID_SDK=/usr/local/opt/android-sdk &&
-      export ANDROID_HOME=/usr/local/opt/android-sdk
-      $ANDROID_SDK/tools/android update sdk --filter android-19,addon-google_apis-google-19
-    fi
-
-  # JavaScript
-  - |
-    if [[ $TARGET = "js" ]]; then (
-      cd javascript &&
-      npm install &&
-      unset CC && unset CXX && unset LINK &&
-      source /tmp/emsdk_portable/emsdk_env.sh &&
-      npm run build:browser
-    ) fi
 
 script:
-  # C
+- cd website
-  - |
+- yarn build
-    if [[ $TARGET = "c" ]]; then
+- cd ..
-      buck test --verbose 0 //:yoga &&
-      buck run --verbose 0 //benchmark:benchmark &&
-      git checkout HEAD^ &&
-      buck run --verbose 0 //benchmark:benchmark
-    fi
 
-  # Java
+deploy:
-  - |
+  provider: pages
-    if [[ $TARGET = "java" ]]; then
+  skip-cleanup: true
-      buck test --verbose 0 //java:java
+  github-token: $GITHUB_TOKEN
-    fi
+  fqdn: yogalayout.com
-
+  local-dir: website/public
-  # .NET
+  email: yogabot@fb.com
-  - |
+  name: Yoga-bot
-    if [[ $TARGET = "net" ]]; then
+  keep-history: true
-      sh csharp/tests/Facebook.Yoga/test_macos.sh
+  on:
-    fi
+    branch: master
-
-  # iOS
-  - |
-    if [[ $TARGET = "ios" ]]; then
-      buck test --verbose 0 //YogaKit:YogaKitTests --config cxx.default_platform=iphonesimulator-x86_64
-    fi
-
-  # Android
-  - |
-    if [[ $TARGET = "android" ]]; then
-      buck build --verbose 0 //android/sample:sample
-    fi
-
-  # JavaScript
-  - |
-    if [[ $TARGET = "js" ]]; then (
-      cd javascript &&
-      npm run test:all &&
-      npm run bench
-    ) fi

BUCK

@@ -1,42 +1,45 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "LIBRARY_COMPILER_FLAGS", "BASE_COMPILER_FLAGS", "GTEST_TARGET", "yoga_dep", "cxx_library", "cxx_test")
 
 GMOCK_OVERRIDE_FLAGS = [
-  # gmock does not mark mocked methods as override, ignore the warnings in tests
+    # gmock does not mark mocked methods as override, ignore the warnings in tests
-  '-Wno-inconsistent-missing-override',
+    "-Wno-inconsistent-missing-override",
 ]
 
-COMPILER_FLAGS = BASE_COMPILER_FLAGS + ['-std=c11', '-fPIC']
+COMPILER_FLAGS = LIBRARY_COMPILER_FLAGS + [
-TEST_COMPILER_FLAGS = BASE_COMPILER_FLAGS + GMOCK_OVERRIDE_FLAGS + ['-std=c++11']
+    "-std=c++1y",
+]
+
+TEST_COMPILER_FLAGS = BASE_COMPILER_FLAGS + GMOCK_OVERRIDE_FLAGS + [
+    "-std=c++1y",
+]
 
 cxx_library(
-  name = 'yoga',
+    name = "yoga",
-  soname = 'libyogacore.$(ext)',
+    srcs = glob(["yoga/*.cpp"]),
-  srcs = glob(['yoga/*.c']),
+    header_namespace = "",
-  tests=[':YogaTests'],
+    exported_headers = subdir_glob([("", "yoga/*.h")]),
-  exported_headers = subdir_glob([('', 'yoga/*.h')]),
+    compiler_flags = COMPILER_FLAGS,
-  header_namespace = '',
+    soname = "libyogacore.$(ext)",
-  compiler_flags = COMPILER_FLAGS,
+    tests = [":YogaTests"],
-  deps = [] if THIS_IS_FBOBJC else [
+    visibility = ["PUBLIC"],
-    yoga_dep('lib/fb:ndklog'),
+    deps = [
-  ],
+        yoga_dep("lib/fb:ndklog"),
-  visibility = ['PUBLIC'],
+    ],
 )
 
 cxx_test(
-  name = 'YogaTests',
+    name = "YogaTests",
-  contacts = ['emilsj@fb.com'],
+    srcs = glob(["tests/*.cpp"]),
-  srcs = glob(['tests/*.cpp']),
+    compiler_flags = TEST_COMPILER_FLAGS,
-  compiler_flags = TEST_COMPILER_FLAGS,
+    contacts = ["emilsj@fb.com"],
-  deps = [
+    visibility = ["PUBLIC"],
-    ':yoga',
+    deps = [
-    GTEST_TARGET,
+        ":yoga",
-  ],
+        GTEST_TARGET,
-  visibility = ['PUBLIC'],
+    ],
 )

CMakeLists.txt

@@ -0,0 +1,15 @@
+#
+# Copyright (c) 2014-present, Facebook, Inc.
+#
+# 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 3.4.1)
+
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+file(GLOB yogacore_SRC yoga/*.cpp)
+add_library(yogacore STATIC ${yogacore_SRC})
+
+target_link_libraries(yogacore android log)

CODE_OF_CONDUCT.md

@@ -0,0 +1,3 @@
+# 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.facebook.com/pages/876921332402685/open-source-code-of-conduct) so that you can understand what actions will and will not be tolerated.

CONTRIBUTING.md

@@ -2,6 +2,10 @@
 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.facebook.com/pages/876921332402685/open-source-code-of-conduct) 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`.
@@ -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) 2014-present, Facebook, Inc.
 
-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,
+The above copyright notice and this permission notice shall be included in all
-are permitted provided that the following conditions are met:
+copies or substantial portions of the Software.
 
- * Redistributions of source code must retain the above copyright notice, this
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-   list of conditions and the following disclaimer.
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * Redistributions in binary form must reproduce the above copyright notice,
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-   this list of conditions and the following disclaimer in the documentation
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-   and/or other materials provided with the distribution.
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-
+SOFTWARE.
- * 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.

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

@@ -1,11 +1,4 @@
-# Yoga [![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)
+# Yoga [![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) [![bintray](https://img.shields.io/bintray/v/facebook/maven/com.facebook.yoga:yoga.svg)](https://bintray.com/facebook/maven/com.facebook.yoga%3Ayoga/_latestVersion) [![NuGet](https://img.shields.io/nuget/v/Facebook.Yoga.svg)](https://www.nuget.org/packages/Facebook.Yoga)
-
-[![C Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=c&label=C)](https://travis-ci.org/facebook/yoga)
-[![Java Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=java&label=Java)](https://travis-ci.org/facebook/yoga)
-[![iOS Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=ios&label=iOS)](https://travis-ci.org/facebook/yoga)
-[![.NET Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=net&label=.NET)](https://travis-ci.org/facebook/yoga)
-[![JavaScript Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=js&label=JavaScript)](https://travis-ci.org/facebook/yoga)
-[![Android Status](https://badges.herokuapp.com/travis/facebook/yoga?env=TARGET=android&label=Android)](https://travis-ci.org/facebook/yoga)
 
 ## 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.
@@ -30,8 +23,26 @@ You may need to install the latest watir-webdriver gem (`gem install watir-webdr
 ### .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`.
 
-## 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 `benchmark/YGBenchmark.c` and can be run with `buck run //benchmark:benchmark`. 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.
+
+### JavaScript
+Installing through NPM
+```sh
+npm install yoga-layout
+```
+By default this will install the library and try to build for all platforms (node, browser asm, and standalone webpack). You may receive errors if you do not have the required platform development tools already installed. To preset the platform you'd like to build for you can set a .npmrc property first.
+```sh
+npm config set yoga-layout:platform standalone
+```
+This will now only run the standalone webpack build upon install.
+
+## Build Platforms
+
+| name           | description                                     |
+|----------------|-------------------------------------------------|
+| all (default)  | Builds all of these platforms.                  |
+| browser        | Builds asm js browser version.                  |
+| node           | Builds node js version.                         |
+| standalone     | Runs webpack.                                   |
+| none           | Does nothing. You can use the prepackaged libs. |

YOGA_DEFS

@@ -1,42 +0,0 @@
-
-YOGA_ROOT = '//...'
-JAVA_TARGET = '//java:java'
-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'
-APPCOMPAT_TARGET = '//lib/appcompat:appcompat'
-ANDROID_SUPPORT_TARGET = '//lib/android-support:android-support'
-ANDROID_TARGET = '//android:android'
-ANDROID_JAVA_TARGET = '//android/src/main/java/com/facebook/yoga/android:android'
-ANDROID_RES_TARGET = '//android:res'
-ANDROID_SAMPLE_JAVA_TARGET = '//android/sample/java/com/facebook/samples/yoga:yoga'
-ANDROID_SAMPLE_RES_TARGET = '//android/sample:res'
-
-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
-
-with allow_unsafe_import():
-  import os.path
-def isdir(filename):
-  return os.path.isdir(filename)

Yoga.podspec

@@ -1,9 +1,9 @@
 Pod::Spec.new do |spec|
   spec.name = 'Yoga'
-  spec.version = '1.1.0'
+  spec.version = '1.8.0'
-  spec.license =  { :type => 'BSD', :file => "LICENSE" }
+  spec.license =  { :type => 'MIT', :file => "LICENSE" }
-  spec.homepage = 'https://facebook.github.io/yoga/'
+  spec.homepage = 'https://yogalayout.com/'
-  spec.documentation_url = 'https://facebook.github.io/yoga/docs/api/c/'
+  spec.documentation_url = 'https://yogalayout.com/docs'
 
   spec.summary = 'Yoga is a cross-platform layout engine which implements Flexbox.'
   spec.description = 'Yoga is a cross-platform layout engine enabling maximum collaboration within your team by implementing an API many designers are familiar with, and opening it up to developers across different platforms.'
@@ -11,9 +11,9 @@ Pod::Spec.new do |spec|
   spec.authors = 'Facebook'
   spec.source = {
     :git => 'https://github.com/facebook/yoga.git',
-    :tag => 'v2017.02.07.00',
+    :tag => '1.8.0',
   }
-
+  spec.osx.deployment_target  = '10.13'
   spec.module_name = 'yoga'
   spec.requires_arc = false
   spec.compiler_flags = [
@@ -21,8 +21,10 @@ Pod::Spec.new do |spec|
       '-fexceptions',
       '-Wall',
       '-Werror',
-      '-std=c11',
+      '-std=c++1y',
       '-fPIC'
   ]
-  spec.source_files = 'yoga/**/*.{c,h}'
+  spec.source_files = 'yoga/**/*.{c,h,cpp}'
+  spec.public_header_files = 'yoga/{Yoga,YGEnums,YGMacros}.h'
+
 end

YogaKit.podspec

@@ -1,7 +1,7 @@
 podspec = Pod::Spec.new do |spec|
   spec.name = 'YogaKit'
-  spec.version = '1.1.0'
+  spec.version = '1.7.0'
-  spec.license =  { :type => 'BSD', :file => "LICENSE" }
+  spec.license =  { :type => 'MIT', :file => "LICENSE" }
   spec.homepage = 'https://facebook.github.io/yoga/'
   spec.documentation_url = 'https://facebook.github.io/yoga/docs/api/yogakit/'
 
@@ -11,15 +11,15 @@ podspec = Pod::Spec.new do |spec|
   spec.authors = 'Facebook'
   spec.source = {
     :git => 'https://github.com/facebook/yoga.git',
-    :tag => 'v2017.02.07.00',
+    :tag => '1.7.0',
   }
 
   spec.platform = :ios
   spec.ios.deployment_target = '8.0'
   spec.ios.frameworks = 'UIKit'
 
-  spec.dependency 'Yoga', '~> 1.1'
+  spec.dependency 'Yoga', '~> 1.7'
-  spec.source_files = 'YogaKit/Source/*.{h,m}'
+  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'
 end

YogaKit/BUCK

@@ -1,58 +1,65 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "yoga_dep", "apple_library", "apple_test")
 
 COMPILER_FLAGS = [
-  '-fobjc-arc',
+    "-fobjc-arc",
-  '-Wconditional-uninitialized',
+    "-Wconditional-uninitialized",
-  '-Wdangling-else',
+    "-Wdangling-else",
-  '-Wdeprecated-declarations',
+    "-Wdeprecated-declarations",
-  '-Wimplicit-retain-self',
+    "-Wimplicit-retain-self",
-  '-Wincomplete-implementation',
+    "-Wincomplete-implementation",
-  '-Wobjc-method-access',
+    "-Wobjc-method-access",
-  '-Wobjc-missing-super-calls',
+    "-Wobjc-missing-super-calls",
-  '-Wmismatched-return-types',
+    "-Wmismatched-return-types",
-  '-Wreturn-type',
+    "-Wreturn-type",
-  '-Wno-global-constructors',
+    "-Wno-global-constructors",
-  '-Wno-shadow',
+    "-Wno-shadow",
-  '-Wunused-const-variable',
+    "-Wunused-const-variable",
-  '-Wunused-function',
+    "-Wunused-function",
-  '-Wunused-property-ivar',
+    "-Wunused-property-ivar",
-  '-Wunused-result',
+    "-Wunused-result",
-  '-Wunused-value',
+    "-Wunused-value",
 ]
 
 apple_library(
-  name = 'YogaKit',
+    name = "YogaKit",
-  compiler_flags = COMPILER_FLAGS,
+    srcs = glob(["Source/**/*.m"]),
-  srcs = glob(['Source/**/*.m']),
+    header_namespace = "",
-  exported_headers = glob(['Source/**/*.h']),
+    exported_headers = subdir_glob(
-  frameworks = [
+        [
-    '$SDKROOT/System/Library/Frameworks/Foundation.framework',
+            ("", "Source/**/*.h"),
-    '$SDKROOT/System/Library/Frameworks/UIKit.framework',
+            ("Source", "**/*.h"),
-  ],
+        ],
-  deps = [
+        prefix = "YogaKit",
-    yoga_dep(':yoga'),
+    ),
-  ],
+    compiler_flags = COMPILER_FLAGS,
-  visibility = ['PUBLIC'],
+    frameworks = [
+        "$SDKROOT/System/Library/Frameworks/Foundation.framework",
+        "$SDKROOT/System/Library/Frameworks/UIKit.framework",
+    ],
+    header_path_prefix = "",
+    link_whole = True,
+    visibility = ["PUBLIC"],
+    deps = [
+        yoga_dep(":yoga"),
+    ],
 )
 
 apple_test(
-  name = 'YogaKitTests',
+    name = "YogaKitTests",
-  compiler_flags = COMPILER_FLAGS,
+    srcs = glob(["Tests/**/*.m"]),
-  info_plist = 'Tests/Info.plist',
+    compiler_flags = COMPILER_FLAGS,
-  srcs = glob(['Tests/**/*.m']),
+    frameworks = [
-  frameworks = [
+        "$PLATFORM_DIR/Developer/Library/Frameworks/XCTest.framework",
-    '$SDKROOT/System/Library/Frameworks/CoreGraphics.framework',
+        "$SDKROOT/System/Library/Frameworks/CoreGraphics.framework",
-    '$PLATFORM_DIR/Developer/Library/Frameworks/XCTest.framework',
+    ],
-  ],
+    info_plist = "Tests/Info.plist",
-  deps = [
+    visibility = ["PUBLIC"],
-    ':YogaKit',
+    deps = [
-  ],
+        ":YogaKit",
-  visibility = ['PUBLIC'],
+    ],
 )

YogaKit/CHANGELOG.md

@@ -1,46 +0,0 @@
-# CHANGELOG
-
-The changelog for `YogaKit`.
-
-1.2.0 (**upcoming release**)
------
-
-### Breaking Changes
-
-- `applyLayout()` has now been changed to `applyLayout(preservingOrigin:)`.
-
-- Computed properties are no longer reflected in getter's of the affected properties.
-```swift
-// OLD
-view.yoga.margin = 10
-view.yoga.marginTop  // 10
-view.yoga.marginLeft // 10
-
-// NEW
-view.yoga.margin = 10
-view.yoga.marginTop // 0
-view.yoga.marginLeft // 0
-```
-
-### Enhancements
-
-- Pixel Rounding now uses `roundf()` instead of `round()`.
-
-- There is now a method that allows "bulk" updates to YGLayout.
-```objc
-[view configureLayoutWithBlock:^(YGLayout *layout) {
-  layout.isEnabled = YES;
-  layout.width = 50;
-  layout.height = 50;
-}];
-```
-
-```swift
-view.configureLayout { (layout) in
-  layout.isEnabled = true
-  layout.width = 50
-  layout.height = 50
-}
-```
-
-- Added new `isDirty` property, and make `markDirty` a little more performant.

YogaKit/README.md

@@ -8,7 +8,7 @@
 YogaKit is available to install via [CocoaPods](https://cocoapods.org/).
 
 ```
-pod 'YogaKit', '~> 1.1'
+pod 'YogaKit', '~> 1.7'
 ```
 
 ## Getting Started
@@ -19,4 +19,4 @@ We also have a sample project. To try it out, clone this repo and open `YogaKitS
 ## 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](https://github.com/facebook/yoga/blob/master/CONTRIBUTING) file for how to help out.
+See the [CONTRIBUTING.md](https://github.com/facebook/yoga/blob/master/CONTRIBUTING.md) file for how to help out.

YogaKit/Source/UIView+Yoga.h

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import "YGLayout.h"
@@ -12,7 +10,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-typedef void (^YGLayoutConfigurationBlock)(YGLayout *);
+typedef void (^YGLayoutConfigurationBlock)(YGLayout *layout);
 
 @interface UIView (Yoga)
 
@@ -20,6 +18,10 @@ typedef void (^YGLayoutConfigurationBlock)(YGLayout *);
  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`

YogaKit/Source/UIView+Yoga.m

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import "UIView+Yoga.h"
@@ -26,6 +24,11 @@ static const void *kYGYogaAssociatedKey = &kYGYogaAssociatedKey;
   return yoga;
 }
 
+- (BOOL)isYogaEnabled
+{
+  return objc_getAssociatedObject(self, kYGYogaAssociatedKey) != nil;
+}
+
 - (void)configureLayoutWithBlock:(YGLayoutConfigurationBlock)block
 {
   if (block != nil) {

YogaKit/Source/YGLayout+Private.h

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import "YGLayout.h"

YogaKit/Source/YGLayout.h

@@ -1,19 +1,41 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import <UIKit/UIKit.h>
 #import <yoga/YGEnums.h>
+#import <yoga/Yoga.h>
+#import <yoga/YGMacros.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
 
 /**
-  The property that decides if we should include this view when calculating layout. Defaults to YES.
+ 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")));
+
+/**
+  The property that decides if we should include this view when calculating
+  layout. Defaults to YES.
  */
 @property (nonatomic, readwrite, assign, setter=setIncludedInLayout:) BOOL isIncludedInLayout;
 
@@ -36,34 +58,34 @@
 
 @property (nonatomic, readwrite, assign) CGFloat flexGrow;
 @property (nonatomic, readwrite, assign) CGFloat flexShrink;
-@property (nonatomic, readwrite, assign) CGFloat flexBasis;
+@property (nonatomic, readwrite, assign) YGValue flexBasis;
 
-@property (nonatomic, readwrite, assign) CGFloat left;
+@property (nonatomic, readwrite, assign) YGValue left;
-@property (nonatomic, readwrite, assign) CGFloat top;
+@property (nonatomic, readwrite, assign) YGValue top;
-@property (nonatomic, readwrite, assign) CGFloat right;
+@property (nonatomic, readwrite, assign) YGValue right;
-@property (nonatomic, readwrite, assign) CGFloat bottom;
+@property (nonatomic, readwrite, assign) YGValue bottom;
-@property (nonatomic, readwrite, assign) CGFloat start;
+@property (nonatomic, readwrite, assign) YGValue start;
-@property (nonatomic, readwrite, assign) CGFloat end;
+@property (nonatomic, readwrite, assign) YGValue end;
 
-@property (nonatomic, readwrite, assign) CGFloat marginLeft;
+@property (nonatomic, readwrite, assign) YGValue marginLeft;
-@property (nonatomic, readwrite, assign) CGFloat marginTop;
+@property (nonatomic, readwrite, assign) YGValue marginTop;
-@property (nonatomic, readwrite, assign) CGFloat marginRight;
+@property (nonatomic, readwrite, assign) YGValue marginRight;
-@property (nonatomic, readwrite, assign) CGFloat marginBottom;
+@property (nonatomic, readwrite, assign) YGValue marginBottom;
-@property (nonatomic, readwrite, assign) CGFloat marginStart;
+@property (nonatomic, readwrite, assign) YGValue marginStart;
-@property (nonatomic, readwrite, assign) CGFloat marginEnd;
+@property (nonatomic, readwrite, assign) YGValue marginEnd;
-@property (nonatomic, readwrite, assign) CGFloat marginHorizontal;
+@property (nonatomic, readwrite, assign) YGValue marginHorizontal;
-@property (nonatomic, readwrite, assign) CGFloat marginVertical;
+@property (nonatomic, readwrite, assign) YGValue marginVertical;
-@property (nonatomic, readwrite, assign) CGFloat margin;
+@property (nonatomic, readwrite, assign) YGValue margin;
 
-@property (nonatomic, readwrite, assign) CGFloat paddingLeft;
+@property (nonatomic, readwrite, assign) YGValue paddingLeft;
-@property (nonatomic, readwrite, assign) CGFloat paddingTop;
+@property (nonatomic, readwrite, assign) YGValue paddingTop;
-@property (nonatomic, readwrite, assign) CGFloat paddingRight;
+@property (nonatomic, readwrite, assign) YGValue paddingRight;
-@property (nonatomic, readwrite, assign) CGFloat paddingBottom;
+@property (nonatomic, readwrite, assign) YGValue paddingBottom;
-@property (nonatomic, readwrite, assign) CGFloat paddingStart;
+@property (nonatomic, readwrite, assign) YGValue paddingStart;
-@property (nonatomic, readwrite, assign) CGFloat paddingEnd;
+@property (nonatomic, readwrite, assign) YGValue paddingEnd;
-@property (nonatomic, readwrite, assign) CGFloat paddingHorizontal;
+@property (nonatomic, readwrite, assign) YGValue paddingHorizontal;
-@property (nonatomic, readwrite, assign) CGFloat paddingVertical;
+@property (nonatomic, readwrite, assign) YGValue paddingVertical;
-@property (nonatomic, readwrite, assign) CGFloat padding;
+@property (nonatomic, readwrite, assign) YGValue padding;
 
 @property (nonatomic, readwrite, assign) CGFloat borderLeftWidth;
 @property (nonatomic, readwrite, assign) CGFloat borderTopWidth;
@@ -73,12 +95,12 @@
 @property (nonatomic, readwrite, assign) CGFloat borderEndWidth;
 @property (nonatomic, readwrite, assign) CGFloat borderWidth;
 
-@property (nonatomic, readwrite, assign) CGFloat width;
+@property (nonatomic, readwrite, assign) YGValue width;
-@property (nonatomic, readwrite, assign) CGFloat height;
+@property (nonatomic, readwrite, assign) YGValue height;
-@property (nonatomic, readwrite, assign) CGFloat minWidth;
+@property (nonatomic, readwrite, assign) YGValue minWidth;
-@property (nonatomic, readwrite, assign) CGFloat minHeight;
+@property (nonatomic, readwrite, assign) YGValue minHeight;
-@property (nonatomic, readwrite, assign) CGFloat maxWidth;
+@property (nonatomic, readwrite, assign) YGValue maxWidth;
-@property (nonatomic, readwrite, assign) CGFloat maxHeight;
+@property (nonatomic, readwrite, assign) YGValue maxHeight;
 
 // Yoga specific properties, not compatible with flexbox specification
 @property (nonatomic, readwrite, assign) CGFloat aspectRatio;
@@ -95,12 +117,26 @@
 - (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.
  */

YogaKit/Source/YGLayout.m

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import "YGLayout+Private.h"
@@ -21,26 +19,56 @@
   YGNodeStyleSet##capitalized_name(self.node, lowercased_name); \
 }
 
-#define YG_VALUE_PROPERTY(lowercased_name, capitalized_name)    \
+#define YG_VALUE_PROPERTY(lowercased_name, capitalized_name)                       \
-- (CGFloat)lowercased_name                                      \
+- (YGValue)lowercased_name                                                         \
-{                                                               \
+{                                                                                  \
-  YGValue value = YGNodeStyleGet##capitalized_name(self.node);  \
+  return YGNodeStyleGet##capitalized_name(self.node);                              \
-  if (value.unit == YGUnitPoint) {                              \
+}                                                                                  \
-    return value.value;                                         \
+                                                                                   \
-  } else {                                                      \
+- (void)set##capitalized_name:(YGValue)lowercased_name                             \
-    return YGUndefined;                                         \
+{                                                                                  \
-  }                                                             \
+  switch (lowercased_name.unit) {                                                  \
-}                                                               \
+     case YGUnitUndefined:                                                         \
-                                                                \
+      YGNodeStyleSet##capitalized_name(self.node, lowercased_name.value);          \
-- (void)set##capitalized_name:(CGFloat)lowercased_name          \
+      break;                                                                       \
-{                                                               \
+    case YGUnitPoint:                                                              \
-  YGNodeStyleSet##capitalized_name(self.node, lowercased_name); \
+      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_EDGE_PROPERTY_GETTER(lowercased_name, capitalized_name, property, edge) \
+#define YG_AUTO_VALUE_PROPERTY(lowercased_name, capitalized_name)                  \
-- (CGFloat)lowercased_name                                                         \
+- (YGValue)lowercased_name                                                         \
 {                                                                                  \
-  return YGNodeStyleGet##property(self.node, edge);                                \
+  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) \
@@ -49,42 +77,55 @@
   YGNodeStyleSet##property(self.node, edge, lowercased_name);                      \
 }
 
-#define YG_EDGE_PROPERTY(lowercased_name, capitalized_name, property, edge) \
+#define YG_EDGE_PROPERTY(lowercased_name, capitalized_name, property, edge)         \
-YG_EDGE_PROPERTY_GETTER(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_GETTER(objc_lowercased_name, objc_capitalized_name, c_name, edge) \
+#define YG_VALUE_EDGE_PROPERTY_SETTER(objc_lowercased_name, objc_capitalized_name, c_name, edge) \
-- (CGFloat)objc_lowercased_name                                                                  \
+- (void)set##objc_capitalized_name:(YGValue)objc_lowercased_name                                 \
 {                                                                                                \
-  YGValue value = YGNodeStyleGet##c_name(self.node, edge);                                       \
+  switch (objc_lowercased_name.unit) {                                                           \
-  if (value.unit == YGUnitPoint) {                                                               \
+    case YGUnitUndefined:                                                                        \
-    return value.value;                                                                          \
+      YGNodeStyleSet##c_name(self.node, edge, objc_lowercased_name.value);                       \
-  } else {                                                                                       \
+      break;                                                                                     \
-    return YGUndefined;                                                                          \
+    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_SETTER(objc_lowercased_name, objc_capitalized_name, c_name, edge) \
+#define YG_VALUE_EDGE_PROPERTY(lowercased_name, capitalized_name, property, edge)   \
-- (void)set##objc_capitalized_name:(CGFloat)objc_lowercased_name                                 \
+YG_EDGE_PROPERTY_GETTER(YGValue, lowercased_name, capitalized_name, property, edge) \
-{                                                                                                \
-  YGNodeStyleSet##c_name(self.node, edge, objc_lowercased_name);                                 \
-}
-
-#define YG_VALUE_EDGE_PROPERTY(lowercased_name, capitalized_name, property, edge) \
-YG_VALUE_EDGE_PROPERTY_GETTER(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)                                                            \
+#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##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##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##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##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##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##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;
@@ -99,14 +140,16 @@ YG_VALUE_EDGE_PROPERTY(lowercased_name, capitalized_name, capitalized_name, YGEd
 
 + (void)initialize
 {
-  YGSetExperimentalFeatureEnabled(YGExperimentalFeatureWebFlexBasis, true);
+  globalConfig = YGConfigNew();
+  YGConfigSetExperimentalFeatureEnabled(globalConfig, YGExperimentalFeatureWebFlexBasis, true);
+  YGConfigSetPointScaleFactor(globalConfig, [UIScreen mainScreen].scale);
 }
 
 - (instancetype)initWithView:(UIView*)view
 {
   if (self = [super init]) {
     _view = view;
-    _node = YGNodeNew();
+    _node = YGNodeNewWithConfig(globalConfig);
     YGNodeSetContext(_node, (__bridge void *) view);
     _isEnabled = NO;
     _isIncludedInLayout = YES;
@@ -186,7 +229,7 @@ YG_PROPERTY(YGDisplay, display, Display)
 
 YG_PROPERTY(CGFloat, flexGrow, FlexGrow)
 YG_PROPERTY(CGFloat, flexShrink, FlexShrink)
-YG_VALUE_PROPERTY(flexBasis, FlexBasis)
+YG_AUTO_VALUE_PROPERTY(flexBasis, FlexBasis)
 
 YG_VALUE_EDGE_PROPERTY(left, Left, Position, YGEdgeLeft)
 YG_VALUE_EDGE_PROPERTY(top, Top, Position, YGEdgeTop)
@@ -205,8 +248,8 @@ YG_EDGE_PROPERTY(borderStartWidth, BorderStartWidth, Border, YGEdgeStart)
 YG_EDGE_PROPERTY(borderEndWidth, BorderEndWidth, Border, YGEdgeEnd)
 YG_EDGE_PROPERTY(borderWidth, BorderWidth, Border, YGEdgeAll)
 
-YG_VALUE_PROPERTY(width, Width)
+YG_AUTO_VALUE_PROPERTY(width, Width)
-YG_VALUE_PROPERTY(height, Height)
+YG_AUTO_VALUE_PROPERTY(height, Height)
 YG_VALUE_PROPERTY(minWidth, MinWidth)
 YG_VALUE_PROPERTY(minHeight, MinHeight)
 YG_VALUE_PROPERTY(maxWidth, MaxWidth)
@@ -232,6 +275,20 @@ YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
   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 = {
@@ -241,8 +298,6 @@ YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
   return [self calculateLayoutWithSize:constrainedSize];
 }
 
-#pragma mark - Private
-
 - (CGSize)calculateLayoutWithSize:(CGSize)size
 {
   NSAssert([NSThread isMainThread], @"Yoga calculation must be done on main.");
@@ -263,6 +318,8 @@ YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
   };
 }
 
+#pragma mark - Private
+
 static YGSize YGMeasureView(
   YGNodeRef node,
   float width,
@@ -331,7 +388,7 @@ static void YGAttachNodesFromViewHierachy(UIView *const view)
 
     NSMutableArray<UIView *> *subviewsToInclude = [[NSMutableArray alloc] initWithCapacity:view.subviews.count];
     for (UIView *subview in view.subviews) {
-      if (subview.yoga.isIncludedInLayout) {
+      if (subview.yoga.isEnabled && subview.yoga.isIncludedInLayout) {
         [subviewsToInclude addObject:subview];
       }
     }

YogaKit/Source/YGLayoutExtensions.swift

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+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

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #import <XCTest/XCTest.h>
@@ -21,7 +19,8 @@
 - (void)testConfigureLayoutIsNoOpWithNilBlock
 {
   UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-  XCTAssertNoThrow([view configureLayoutWithBlock:nil]);
+  id block = nil;
+  XCTAssertNoThrow([view configureLayoutWithBlock:block]);
 }
 
 - (void)testConfigureLayoutBlockWorksWithValidBlock
@@ -30,11 +29,11 @@
   [view configureLayoutWithBlock:^(YGLayout *layout){
     XCTAssertNotNil(layout);
     layout.isEnabled = YES;
-    layout.width = 25;
+    layout.width = YGPointValue(25);
   }];
 
   XCTAssertTrue(view.yoga.isEnabled);
-  XCTAssertEqual(view.yoga.width, 25);
+  XCTAssertEqual(view.yoga.width.value, 25);
 }
 
 - (void)testNodesAreDeallocedWithSingleView
@@ -43,7 +42,7 @@
 
   @autoreleasepool {
     UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
-    view.yoga.flexBasis = 1;
+    view.yoga.flexBasis = YGPointValue(1);
 
     layoutRef = view.yoga;
     XCTAssertNotNil(layoutRef);
@@ -62,11 +61,11 @@
   @autoreleasepool {
     UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
     topLayout = view.yoga;
-    topLayout.flexBasis = 1;
+    topLayout.flexBasis = YGPointValue(1);
 
     UIView *subview = [[UIView alloc] initWithFrame:CGRectZero];
     subviewLayout = subview.yoga;
-    subviewLayout.flexBasis = 1;
+    subviewLayout.flexBasis = YGPointValue(1);
 
     view = nil;
   }
@@ -112,9 +111,9 @@
 
   UIView *textBadgeView = [[UIView alloc] initWithFrame:CGRectZero];
   textBadgeView.yoga.isEnabled = YES;
-  textBadgeView.yoga.margin = 0;
+  textBadgeView.yoga.margin = YGPointValue(0);
-  textBadgeView.yoga.width = 10;
+  textBadgeView.yoga.width = YGPointValue(10);
-  textBadgeView.yoga.height = 10;
+  textBadgeView.yoga.height = YGPointValue(10);
   [container addSubview:textBadgeView];
 
   const CGSize textBadgeViewSize = textBadgeView.yoga.intrinsicSize;
@@ -135,14 +134,14 @@
 
   UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
   view.yoga.isEnabled = YES;
-  view.yoga.flexBasis = 0;
+  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 = 25;
+  view2.yoga.marginTop = YGPointValue(25);
-  view2.yoga.flexBasis = 0;
+  view2.yoga.flexBasis = YGPointValue(0);
   view2.yoga.flexGrow = 1;
   [container addSubview:view2];
 
@@ -153,6 +152,59 @@
   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];
@@ -388,12 +440,12 @@
   XCTAssertTrue(view.yoga.isLeaf);
 
   view.yoga.isEnabled = YES;
-  view.yoga.width = 50.0;
+  view.yoga.width = YGPointValue(50);
   XCTAssertTrue(view.yoga.isLeaf);
 
   UIView *const subview = view.subviews[0];
   subview.yoga.isEnabled = YES;
-  subview.yoga.width = 50.0;
+  subview.yoga.width = YGPointValue(50);
   XCTAssertFalse(view.yoga.isLeaf);
 }
 
@@ -405,14 +457,14 @@
 
     UIView *subview1 = [[UIView alloc] initWithFrame:CGRectZero];
     subview1.yoga.isEnabled = YES;
-    subview1.yoga.width = 100;
+    subview1.yoga.width = YGPointValue(100);
     subview1.yoga.flexGrow = 1;
     subview1.yoga.flexDirection = YGFlexDirectionColumn;
     [container addSubview:subview1];
 
     UIView *subview2 = [[UIView alloc] initWithFrame:CGRectZero];
     subview2.yoga.isEnabled = YES;
-    subview2.yoga.width = 150;
+    subview2.yoga.width = YGPointValue(150);
     subview2.yoga.flexGrow = 1;
     subview2.yoga.flexDirection = YGFlexDirectionColumn;
     [container addSubview:subview2];
@@ -473,155 +525,195 @@
     [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 = 1;
+  view.yoga.left = YGPointValue(1);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeLeft).value, 1);
+  XCTAssertEqual(view.yoga.left.value, 1);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeLeft).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.left.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.left, 1);
+  view.yoga.left = YGPercentValue(2);
+  XCTAssertEqual(view.yoga.left.value, 2);
+  XCTAssertEqual(view.yoga.left.unit, YGUnitPercent);
 
-  view.yoga.right = 2;
+  view.yoga.right = YGPointValue(3);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeRight).value, 2);
+  XCTAssertEqual(view.yoga.right.value, 3);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeRight).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.right.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.right, 2);
+  view.yoga.right = YGPercentValue(4);
+  XCTAssertEqual(view.yoga.right.value, 4);
+  XCTAssertEqual(view.yoga.right.unit, YGUnitPercent);
 
-  view.yoga.top = 3;
+  view.yoga.top = YGPointValue(5);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeTop).value, 3);
+  XCTAssertEqual(view.yoga.top.value, 5);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeTop).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.top.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.top, 3);
+  view.yoga.top = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.top.value, 6);
+  XCTAssertEqual(view.yoga.top.unit, YGUnitPercent);
 
-  view.yoga.bottom = 4;
+  view.yoga.bottom = YGPointValue(7);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeBottom).value, 4);
+  XCTAssertEqual(view.yoga.bottom.value, 7);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeBottom).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.bottom.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.bottom, 4);
+  view.yoga.bottom = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.bottom.value, 8);
+  XCTAssertEqual(view.yoga.bottom.unit, YGUnitPercent);
 
-  view.yoga.start = 5;
+  view.yoga.start = YGPointValue(9);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeStart).value, 5);
+  XCTAssertEqual(view.yoga.start.value, 9);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeStart).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.start.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.start, 5);
+  view.yoga.start = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.start.value, 10);
+  XCTAssertEqual(view.yoga.start.unit, YGUnitPercent);
 
-  view.yoga.end = 6;
+  view.yoga.end = YGPointValue(11);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeEnd).value, 6);
+  XCTAssertEqual(view.yoga.end.value, 11);
-  XCTAssertEqual(YGNodeStyleGetPosition(view.yoga.node, YGEdgeEnd).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.end.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.end, 6);
+  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 = 1;
+  view.yoga.margin = YGPointValue(1);
-  XCTAssertEqual(view.yoga.margin, 1);
+  XCTAssertEqual(view.yoga.margin.value, 1);
-  XCTAssertTrue(isnan(view.yoga.marginLeft));
+  XCTAssertEqual(view.yoga.margin.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.marginRight));
+  view.yoga.margin = YGPercentValue(2);
-  XCTAssertTrue(isnan(view.yoga.marginStart));
+  XCTAssertEqual(view.yoga.margin.value, 2);
-  XCTAssertTrue(isnan(view.yoga.marginEnd));
+  XCTAssertEqual(view.yoga.margin.unit, YGUnitPercent);
-  XCTAssertTrue(isnan(view.yoga.marginTop));
-  XCTAssertTrue(isnan(view.yoga.marginBottom));
-  XCTAssertTrue(isnan(view.yoga.marginHorizontal));
-  XCTAssertTrue(isnan(view.yoga.marginVertical));
 
-  view.yoga.marginHorizontal = 2;
+  view.yoga.marginHorizontal = YGPointValue(3);
-  XCTAssertEqual(view.yoga.marginHorizontal, 2);
+  XCTAssertEqual(view.yoga.marginHorizontal.value, 3);
-  XCTAssertTrue(isnan(view.yoga.marginLeft));
+  XCTAssertEqual(view.yoga.marginHorizontal.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.marginRight));
+  view.yoga.marginHorizontal = YGPercentValue(4);
-  XCTAssertTrue(isnan(view.yoga.marginStart));
+  XCTAssertEqual(view.yoga.marginHorizontal.value, 4);
-  XCTAssertTrue(isnan(view.yoga.marginEnd));
+  XCTAssertEqual(view.yoga.marginHorizontal.unit, YGUnitPercent);
 
-  view.yoga.marginVertical = 3;
+  view.yoga.marginVertical = YGPointValue(5);
-  XCTAssertEqual(view.yoga.marginVertical, 3);
+  XCTAssertEqual(view.yoga.marginVertical.value, 5);
-  XCTAssertTrue(isnan(view.yoga.marginTop));
+  XCTAssertEqual(view.yoga.marginVertical.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.marginBottom));
+  view.yoga.marginVertical = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.marginVertical.value, 6);
+  XCTAssertEqual(view.yoga.marginVertical.unit, YGUnitPercent);
 
-  view.yoga.marginLeft = 4;
+  view.yoga.marginLeft = YGPointValue(7);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeLeft).value, 4);
+  XCTAssertEqual(view.yoga.marginLeft.value, 7);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeLeft).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginLeft.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginLeft, 4);
+  view.yoga.marginLeft = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.marginLeft.value, 8);
+  XCTAssertEqual(view.yoga.marginLeft.unit, YGUnitPercent);
 
-  view.yoga.marginRight = 5;
+  view.yoga.marginRight = YGPointValue(9);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeRight).value, 5);
+  XCTAssertEqual(view.yoga.marginRight.value, 9);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeRight).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginRight.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginRight, 5);
+  view.yoga.marginRight = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.marginRight.value, 10);
+  XCTAssertEqual(view.yoga.marginRight.unit, YGUnitPercent);
 
-  view.yoga.marginTop = 6;
+  view.yoga.marginTop = YGPointValue(11);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeTop).value, 6);
+  XCTAssertEqual(view.yoga.marginTop.value, 11);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeTop).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginTop.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginTop, 6);
+  view.yoga.marginTop = YGPercentValue(12);
+  XCTAssertEqual(view.yoga.marginTop.value, 12);
+  XCTAssertEqual(view.yoga.marginTop.unit, YGUnitPercent);
 
-  view.yoga.marginBottom = 7;
+  view.yoga.marginBottom = YGPointValue(13);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeBottom).value, 7);
+  XCTAssertEqual(view.yoga.marginBottom.value, 13);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeBottom).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginBottom.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginBottom, 7);
+  view.yoga.marginBottom = YGPercentValue(14);
+  XCTAssertEqual(view.yoga.marginBottom.value, 14);
+  XCTAssertEqual(view.yoga.marginBottom.unit, YGUnitPercent);
 
-  view.yoga.marginStart = 8;
+  view.yoga.marginStart = YGPointValue(15);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeStart).value, 8);
+  XCTAssertEqual(view.yoga.marginStart.value, 15);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeStart).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginStart.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginStart, 8);
+  view.yoga.marginStart = YGPercentValue(16);
+  XCTAssertEqual(view.yoga.marginStart.value, 16);
+  XCTAssertEqual(view.yoga.marginStart.unit, YGUnitPercent);
 
-  view.yoga.marginEnd = 9;
+  view.yoga.marginEnd = YGPointValue(17);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeEnd).value, 9);
+  XCTAssertEqual(view.yoga.marginEnd.value, 17);
-  XCTAssertEqual(YGNodeStyleGetMargin(view.yoga.node, YGEdgeEnd).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.marginEnd.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.marginEnd, 9);
+  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 = 1;
+  view.yoga.padding = YGPointValue(1);
-  XCTAssertEqual(view.yoga.padding, 1);
+  XCTAssertEqual(view.yoga.padding.value, 1);
-  XCTAssertTrue(isnan(view.yoga.paddingLeft));
+  XCTAssertEqual(view.yoga.padding.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.paddingRight));
+  view.yoga.padding = YGPercentValue(2);
-  XCTAssertTrue(isnan(view.yoga.paddingStart));
+  XCTAssertEqual(view.yoga.padding.value, 2);
-  XCTAssertTrue(isnan(view.yoga.paddingEnd));
+  XCTAssertEqual(view.yoga.padding.unit, YGUnitPercent);
-  XCTAssertTrue(isnan(view.yoga.paddingTop));
-  XCTAssertTrue(isnan(view.yoga.paddingBottom));
-  XCTAssertTrue(isnan(view.yoga.paddingHorizontal));
-  XCTAssertTrue(isnan(view.yoga.paddingVertical));
 
-  view.yoga.paddingHorizontal = 2;
+  view.yoga.paddingHorizontal = YGPointValue(3);
-  XCTAssertEqual(view.yoga.paddingHorizontal, 2);
+  XCTAssertEqual(view.yoga.paddingHorizontal.value, 3);
-  XCTAssertTrue(isnan(view.yoga.paddingLeft));
+  XCTAssertEqual(view.yoga.paddingHorizontal.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.paddingRight));
+  view.yoga.paddingHorizontal = YGPercentValue(4);
-  XCTAssertTrue(isnan(view.yoga.paddingStart));
+  XCTAssertEqual(view.yoga.paddingHorizontal.value, 4);
-  XCTAssertTrue(isnan(view.yoga.paddingEnd));
+  XCTAssertEqual(view.yoga.paddingHorizontal.unit, YGUnitPercent);
 
-  view.yoga.paddingVertical = 3;
+  view.yoga.paddingVertical = YGPointValue(5);
-  XCTAssertEqual(view.yoga.paddingVertical, 3);
+  XCTAssertEqual(view.yoga.paddingVertical.value, 5);
-  XCTAssertTrue(isnan(view.yoga.paddingTop));
+  XCTAssertEqual(view.yoga.paddingVertical.unit, YGUnitPoint);
-  XCTAssertTrue(isnan(view.yoga.paddingBottom));
+  view.yoga.paddingVertical = YGPercentValue(6);
+  XCTAssertEqual(view.yoga.paddingVertical.value, 6);
+  XCTAssertEqual(view.yoga.paddingVertical.unit, YGUnitPercent);
 
-  view.yoga.paddingLeft = 4;
+  view.yoga.paddingLeft = YGPointValue(7);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeLeft).value, 4);
+  XCTAssertEqual(view.yoga.paddingLeft.value, 7);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeLeft).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingLeft.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingLeft, 4);
+  view.yoga.paddingLeft = YGPercentValue(8);
+  XCTAssertEqual(view.yoga.paddingLeft.value, 8);
+  XCTAssertEqual(view.yoga.paddingLeft.unit, YGUnitPercent);
 
-  view.yoga.paddingRight = 5;
+  view.yoga.paddingRight = YGPointValue(9);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeRight).value, 5);
+  XCTAssertEqual(view.yoga.paddingRight.value, 9);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeRight).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingRight.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingRight, 5);
+  view.yoga.paddingRight = YGPercentValue(10);
+  XCTAssertEqual(view.yoga.paddingRight.value, 10);
+  XCTAssertEqual(view.yoga.paddingRight.unit, YGUnitPercent);
 
-  view.yoga.paddingTop = 6;
+  view.yoga.paddingTop = YGPointValue(11);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeTop).value, 6);
+  XCTAssertEqual(view.yoga.paddingTop.value, 11);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeTop).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingTop.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingTop, 6);
+  view.yoga.paddingTop = YGPercentValue(12);
+  XCTAssertEqual(view.yoga.paddingTop.value, 12);
+  XCTAssertEqual(view.yoga.paddingTop.unit, YGUnitPercent);
 
-  view.yoga.paddingBottom = 7;
+  view.yoga.paddingBottom = YGPointValue(13);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeBottom).value, 7);
+  XCTAssertEqual(view.yoga.paddingBottom.value, 13);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeBottom).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingBottom.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingBottom, 7);
+  view.yoga.paddingBottom = YGPercentValue(14);
+  XCTAssertEqual(view.yoga.paddingBottom.value, 14);
+  XCTAssertEqual(view.yoga.paddingBottom.unit, YGUnitPercent);
 
-  view.yoga.paddingStart = 8;
+  view.yoga.paddingStart = YGPointValue(15);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeStart).value, 8);
+  XCTAssertEqual(view.yoga.paddingStart.value, 15);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeStart).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingStart.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingStart, 8);
+  view.yoga.paddingStart = YGPercentValue(16);
+  XCTAssertEqual(view.yoga.paddingStart.value, 16);
+  XCTAssertEqual(view.yoga.paddingStart.unit, YGUnitPercent);
 
-  view.yoga.paddingEnd = 9;
+  view.yoga.paddingEnd = YGPointValue(17);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeEnd).value, 9);
+  XCTAssertEqual(view.yoga.paddingEnd.value, 17);
-  XCTAssertEqual(YGNodeStyleGetPadding(view.yoga.node, YGEdgeEnd).unit, YGUnitPoint);
+  XCTAssertEqual(view.yoga.paddingEnd.unit, YGUnitPoint);
-  XCTAssertEqual(view.yoga.paddingEnd, 9);
+  view.yoga.paddingEnd = YGPercentValue(18);
+  XCTAssertEqual(view.yoga.paddingEnd.value, 18);
+  XCTAssertEqual(view.yoga.paddingEnd.unit, YGUnitPercent);
 }
 
 - (void)testBorderWidthPropertiesWork
@@ -630,12 +722,6 @@
 
   view.yoga.borderWidth = 1;
   XCTAssertEqual(view.yoga.borderWidth, 1);
-  XCTAssertTrue(isnan(view.yoga.borderLeftWidth));
-  XCTAssertTrue(isnan(view.yoga.borderRightWidth));
-  XCTAssertTrue(isnan(view.yoga.borderStartWidth));
-  XCTAssertTrue(isnan(view.yoga.borderEndWidth));
-  XCTAssertTrue(isnan(view.yoga.borderTopWidth));
-  XCTAssertTrue(isnan(view.yoga.borderBottomWidth));
 
   view.yoga.borderLeftWidth = 2;
   XCTAssertEqual(view.yoga.borderLeftWidth, 2);

YogaKit/YogaKitSample/Podfile.lock

@@ -4,9 +4,9 @@ PODS:
   - IGListKit/Default (2.1.0):
     - IGListKit/Diffing
   - IGListKit/Diffing (2.1.0)
-  - Yoga (1.1.0)
+  - Yoga (1.7.0)
-  - YogaKit (1.1.0):
+  - YogaKit (1.7.0):
-    - Yoga (~> 1.1)
+    - Yoga (~> 1.7)
 
 DEPENDENCIES:
   - IGListKit (~> 2.1.0)
@@ -18,9 +18,9 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   IGListKit: b826c68ef7a4ae1626c09d4d3e1ea7a169e6c36e
-  Yoga: 0bf083b7c485b20598020dbedcea869cbe53071e
+  Yoga: 2ed1d7accfef3610a67f58c0cf101a0662137f2c
-  YogaKit: 80df90de9ef2900baa111f2c93476a6f9e921385
+  YogaKit: 31576530e8fcae3175469719ec3212397403330b
 
 PODFILE CHECKSUM: 216f8e7127767709e0e43f3711208d238fa5c404
 
-COCOAPODS: 1.2.0
+COCOAPODS: 1.1.1

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/SwiftViewController.swift

@@ -12,6 +12,11 @@ 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 {

YogaKit/YogaKitSample/YogaKitSample/ViewController.m

@@ -17,16 +17,16 @@
     UIView *root = self.view;
     root.backgroundColor = [UIColor redColor];
     root.yoga.isEnabled = YES;
-    root.yoga.width = self.view.bounds.size.width;
+    root.yoga.width = YGPointValue(self.view.bounds.size.width);
-    root.yoga.height = self.view.bounds.size.height;
+    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.yoga.isEnabled = YES;
-    child1.yoga.width = 100;
+    child1.yoga.width = YGPointValue(100);
-    child1.yoga.height = 100;
+    child1.yoga.height = YGPointValue(100);
 
     UIView *child2 = [UIView new];
     child2.backgroundColor = [UIColor greenColor];

YogaKit/YogaKitSample/YogaKitSample/ViewControllers/BasicViewController.swift

@@ -15,32 +15,38 @@ final class BasicViewController: UIViewController {
 
         let root = self.view!
         root.backgroundColor = .white
-        root.yoga.isEnabled = true
+        root.configureLayout { (layout) in
-        root.yoga.width = containerSize.width
+            layout.isEnabled = true
-        root.yoga.height = containerSize.height
+            layout.width = YGValue(containerSize.width)
-        root.yoga.alignItems = .center
+            layout.height = YGValue(containerSize.height)
-        root.yoga.justifyContent = .center
+            layout.alignItems = .center
+            layout.justifyContent = .center
+        }
 
         let child1 = UIView()
         child1.backgroundColor = .blue
-        child1.yoga.isEnabled = true
+        child1.configureLayout { (layout) in
-        child1.yoga.width = 100
+            layout.isEnabled = true
-        child1.yoga.height = 10
+            layout.width = 100
-        child1.yoga.marginBottom = 25
+            layout.height = 10
+            layout.marginBottom = 25
+        }
         root.addSubview(child1)
 
-        let child2 = UIView()
+        let child2 = UIView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
-        child2.yoga.isEnabled = true
-        child2.yoga.alignSelf = .flexEnd
         child2.backgroundColor = .green
-        child2.frame = CGRect(x: 0, y: 0, width: 200, height: 100)
+        child2.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.alignSelf = .flexEnd
+        }
         root.addSubview(child2)
 
-        let child3 = UIView()
+        let child3 = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
-        child3.yoga.isEnabled = true
-        child3.yoga.alignSelf = .flexStart
         child3.backgroundColor = .yellow
-        child3.frame = CGRect(x: 0, y: 0, width: 100, height: 100)
+        child3.configureLayout { (layout) in
+            layout.isEnabled = true
+            layout.alignSelf = .flexStart
+        }
         root.addSubview(child3)
 
         root.yoga.applyLayout(preservingOrigin: true)

YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift

@@ -17,40 +17,50 @@ final class LayoutInclusionViewController: UIViewController {
     override func viewDidLoad() {
         let root = self.view!
         root.backgroundColor = .white
-        root.yoga.isEnabled = true
+        root.configureLayout { (layout) in
-        root.yoga.flexDirection = .column
+            layout.isEnabled = true
-        root.yoga.justifyContent = .spaceAround
+            layout.flexDirection = .column
+            layout.justifyContent = .spaceAround
+        }
 
         contentView.backgroundColor = .clear
         contentView.layer.borderColor = UIColor.lightGray.cgColor
         contentView.layer.borderWidth = 1.0
-        contentView.yoga.isEnabled = true
+        contentView.configureLayout { (layout) in
-        contentView.yoga.height = 300
+            layout.isEnabled = true
-        contentView.yoga.width = self.view.bounds.size.width
+            layout.height = 300
-        contentView.yoga.flexDirection = .row
+            layout.width = YGValue(self.view.bounds.size.width)
-        contentView.yoga.justifyContent = .center
+            layout.flexDirection = .row
-        contentView.yoga.paddingHorizontal = 25
+            layout.justifyContent = .center
+            layout.paddingHorizontal = 25
+        }
         self.view.addSubview(contentView)
 
         let redView = UIView(frame: .zero)
         redView.backgroundColor = .red
-        redView.yoga.isEnabled = true
+        redView.configureLayout { (layout) in
-        redView.yoga.flexGrow = 1
+            layout.isEnabled = true
-        redView.yoga.flexShrink = 1
+            layout.flexGrow = 1
+            layout.flexShrink = 1
+        }
         contentView.addSubview(redView)
 
         disappearingView.backgroundColor = .blue
-        disappearingView.yoga.isEnabled = true
+        disappearingView.configureLayout { (layout) in
-        disappearingView.yoga.flexGrow = 1
+            layout.isEnabled = true
+            layout.flexGrow = 1
+        }
         contentView.addSubview(disappearingView)
 
         button.setTitle("Add Blue View", for: UIControlState.selected)
         button.setTitle("Remove Blue View", for: UIControlState.normal)
         button.addTarget(self, action: #selector(buttonWasTapped), for: UIControlEvents.touchUpInside)
-        button.yoga.isEnabled = true
+        button.configureLayout { (layout) in
-        button.yoga.height = 300
+            layout.isEnabled = true
-        button.yoga.width = 300
+            layout.height = 300
-        button.yoga.alignSelf = .center
+            layout.width = 300
+            layout.alignSelf = .center
+        }
         root.addSubview(button)
 
         root.yoga.applyLayout(preservingOrigin: false)

YogaKit/YogaKitSample/YogaKitSample/Views/SingleLabelCollectionCell.swift

@@ -15,9 +15,11 @@ final class SingleLabelCollectionCell: UICollectionViewCell {
     override init(frame: CGRect) {
         super.init(frame: frame)
 
-        contentView.yoga.isEnabled = true
+        contentView.configureLayout { (layout) in
-        contentView.yoga.flexDirection = .column
+            layout.isEnabled = true
-        contentView.yoga.justifyContent = .flexEnd
+            layout.flexDirection = .column
+            layout.justifyContent = .flexEnd
+        }
 
         label.textAlignment = .center
         label.numberOfLines = 1
@@ -26,9 +28,11 @@ final class SingleLabelCollectionCell: UICollectionViewCell {
 
         let border = UIView(frame: .zero)
         border.backgroundColor = .lightGray
-        border.yoga.isEnabled = true
+        border.configureLayout { (layout) in
-        border.yoga.height = 0.5
+            layout.isEnabled = true
-        border.yoga.marginHorizontal = 25
+            layout.height = 0.5
+            layout.marginHorizontal = 25
+        }
         contentView.addSubview(border)
     }
 

android/BUCK

@@ -1,36 +1,30 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "ANDROID_JAVA_TARGET", "ANDROID_RES_TARGET", "INFER_ANNOTATIONS_TARGET", "JAVA_TARGET", "PROGRUARD_ANNOTATIONS_TARGET", "android_aar", "android_resource")
 
 android_aar(
-  name = 'android',
+    name = "android",
-  manifest_skeleton = 'src/main/AndroidManifest.xml',
+    manifest_skeleton = "src/main/AndroidManifest.xml",
-  deps = [
+    visibility = [
-    ANDROID_JAVA_TARGET,
+        "PUBLIC",
-    ANDROID_RES_TARGET,
+    ],
-    INFER_ANNOTATIONS_TARGET,
+    deps = [
-    JAVA_TARGET,
+        ANDROID_JAVA_TARGET,
-    PROGRUARD_ANNOTATIONS_TARGET,
+        ANDROID_RES_TARGET,
-  ],
+        INFER_ANNOTATIONS_TARGET,
-  visibility = [
+        JAVA_TARGET,
-    'PUBLIC',
+        PROGRUARD_ANNOTATIONS_TARGET,
-  ],
+    ],
 )
 
 android_resource(
-  name = 'res',
+    name = "res",
-  res = 'src/main/res',
+    package = "com.facebook.yoga.android",
-  package = 'com.facebook.yoga.android',
+    res = "src/main/res",
-  visibility = [
+    visibility = [
-    'PUBLIC',
+        "PUBLIC",
-  ],
+    ],
-)
-
-project_config(
-  src_target = ':android',
 )

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:
+
+    compile 'com.facebook.yoga.android:yoga-layout:1.2.0'
+
+## Getting Started
+
+Check out the docs [here](https://facebook.github.io/yoga/docs/api/android/).
+
+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

@@ -1,38 +1,28 @@
-apply plugin: "com.jfrog.bintray"
+apply plugin: 'com.jfrog.bintray'
 apply plugin: 'com.android.library'
 apply plugin: 'com.github.dcendents.android-maven'
 apply plugin: 'maven-publish'
 
-targetCompatibility = '1.7'
+version = VERSION_NAME
-sourceCompatibility = '1.7'
+group = GROUP
-
-version = '1.0.0'
-group = 'com.facebook.yoga.android'
 
 android {
-    compileSdkVersion 19
+    compileSdkVersion rootProject.compileSdkVersion
-    buildToolsVersion "19.1.0"
+    buildToolsVersion rootProject.buildToolsVersion
 
     defaultConfig {
-        minSdkVersion 15
+        minSdkVersion rootProject.minSdkVersion
-        targetSdkVersion 19
+        targetSdkVersion rootProject.targetSdkVersion
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_7
+        targetCompatibility rootProject.targetCompatibilityVersion
-        targetCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility rootProject.sourceCompatibilityVersion
-    }
-
-    sourceSets.main {
-        jni.srcDirs = [] // disalbe NDK auto build (not sure why this is necessary)
-        // The alternative, fat-aar does an equivalent thing to this hack
-        // seehttps://github.com/adwiv/android-fat-aar/blob/master/fat-aar.gradle#L307
-        jniLibs.srcDirs = ['build/intermediates/exploded-aar/com.facebook.yoga/yoga/1.0.0/jni']
     }
 }
 
 dependencies {
-    compile project(':yoga')
+    api project(':yoga')
 }
 
 task sourcesJar(type: Jar) {
@@ -52,8 +42,4 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
     from javadoc.destinationDir
 }
 
-ext {
+apply from: rootProject.file('gradle/release.gradle')
-    bintrayName = "com.facebook.yoga.android:yoga-layout"
-}
-
-apply from: rootProject.file('gradle/android-jcenter-install.gradle')

android/gradle.properties

@@ -0,0 +1,5 @@
+GROUP=com.facebook.yoga.android
+POM_NAME=YogaLayout
+POM_DESCRIPTION=YogaLayout
+POM_ARTIFACT_ID=yoga-layout
+POM_PACKAGING=aar

android/sample/AndroidManifest.xml

@@ -22,11 +22,14 @@
     android:targetSdkVersion="19"
     />
 
+  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
   <application
       android:label="@string/app_name"
       android:icon="@drawable/ic_launcher"
       android:allowBackup="false"
       android:theme="@style/NoTitleBarWhiteBG"
+      android:supportsRtl="true"
       >
 
     <activity
@@ -41,6 +44,11 @@
 
     </activity>
 
+    <activity
+        android:name=".BenchmarkActivity"
+        android:exported="false"
+        />
+
   </application>
 
 </manifest>

android/sample/BUCK

@@ -4,36 +4,32 @@
 # This source code is licensed under the license found in the
 # LICENSE-examples file in the root directory of this source tree.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "ANDROID_SAMPLE_JAVA_TARGET", "ANDROID_SAMPLE_RES_TARGET", "ANDROID_RES_TARGET", "android_binary", "android_resource")
 
 android_binary(
-  name = 'sample',
+    name = "sample",
-  manifest = 'AndroidManifest.xml',
+    keystore = ":debug_keystore",
-  keystore = ':debug_keystore',
+    manifest = "AndroidManifest.xml",
-  deps = [
+    deps = [
-    ANDROID_SAMPLE_JAVA_TARGET,
+        ANDROID_SAMPLE_JAVA_TARGET,
-    ANDROID_SAMPLE_RES_TARGET,
+        ANDROID_SAMPLE_RES_TARGET,
-  ],
+    ],
 )
 
 android_resource(
-  name = 'res',
+    name = "res",
-  res = 'res',
+    package = "com.facebook.samples.yoga",
-  package = 'com.facebook.samples.yoga',
+    res = "res",
-  deps = [
+    visibility = [
-    ANDROID_RES_TARGET,
+        "PUBLIC",
-  ],
+    ],
-  visibility = [
+    deps = [
-    'PUBLIC',
+        ANDROID_RES_TARGET,
-  ],
+    ],
 )
 
 keystore(
-    name='debug_keystore',
+    name = "debug_keystore",
-    store='debug.keystore',
+    properties = "debug.keystore.properties",
-    properties='debug.keystore.properties',
+    store = "debug.keystore",
-)
-
-project_config(
-  src_target = ':sample',
 )

android/sample/java/com/facebook/samples/yoga/BUCK

@@ -1,23 +1,21 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE-examples file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "ANDROID_JAVA_TARGET", "ANDROID_SAMPLE_RES_TARGET", "ANDROID_SUPPORT_TARGET", "APPCOMPAT_TARGET", "SOLOADER_TARGET", "android_library")
 
 android_library(
-  name = 'yoga',
+    name = "yoga",
-  srcs = glob(['**/*.java']),
+    srcs = glob(["**/*.java"]),
-  deps = [
+    visibility = [
-    ANDROID_JAVA_TARGET,
+        "PUBLIC",
-    ANDROID_SAMPLE_RES_TARGET,
+    ],
-    ANDROID_SUPPORT_TARGET,
+    deps = [
-    APPCOMPAT_TARGET,
+        ANDROID_JAVA_TARGET,
-    SOLOADER_TARGET,
+        ANDROID_SAMPLE_RES_TARGET,
-  ],
+        ANDROID_SUPPORT_TARGET,
-  visibility = [
+        APPCOMPAT_TARGET,
-    'PUBLIC',
+        SOLOADER_TARGET,
-  ]
+    ],
 )

android/sample/java/com/facebook/samples/yoga/BenchmarkActivity.java

@@ -0,0 +1,113 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.Menu;
+import android.support.v7.app.ActionBar;
+
+import com.facebook.samples.yoga.R;
+import com.facebook.yoga.android.YogaViewLayoutFactory;
+
+public class BenchmarkActivity extends AppCompatActivity {
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    LayoutInflater.from(this).setFactory(YogaViewLayoutFactory.getInstance());
+    super.onCreate(savedInstanceState);
+
+    setContentView(R.layout.benchmark_select_layout);
+
+    ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
+    viewPager.setAdapter(new PagerAdapter(getSupportFragmentManager()));
+
+    final ActionBar actionBar = getSupportActionBar();
+    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
+
+    ActionBar.TabListener tabListener = new ActionBar.TabListener() {
+      public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
+        ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
+        viewPager.setCurrentItem(tab.getPosition());
+      }
+
+      public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
+      }
+
+      public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
+      }
+    };
+    actionBar.addTab(
+            actionBar.newTab()
+                    .setText("Inflate")
+                    .setTabListener(tabListener));
+    actionBar.addTab(
+            actionBar.newTab()
+                    .setText("Measure")
+                    .setTabListener(tabListener));
+    actionBar.addTab(
+            actionBar.newTab()
+                    .setText("Layout")
+                    .setTabListener(tabListener));
+
+    viewPager.setOnPageChangeListener(
+            new ViewPager.SimpleOnPageChangeListener() {
+              @Override
+              public void onPageSelected(int position) {
+                // When swiping between pages, select the
+                // corresponding tab.
+                actionBar.setSelectedNavigationItem(position);
+              }
+            });
+
+    viewPager.setOffscreenPageLimit(3);
+  }
+
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    MenuInflater inflater = getMenuInflater();
+    inflater.inflate(R.menu.action_bar_benchmark, menu);
+    return true;
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    // There is only one option
+    Intent intent = new Intent(this, MainActivity.class);
+    startActivity(intent);
+    this.finish();
+    return true;
+  }
+
+  public static class PagerAdapter extends FragmentPagerAdapter {
+    public PagerAdapter(FragmentManager fm) {
+      super(fm);
+    }
+
+    @Override
+    public Fragment getItem(int i) {
+      switch (i) {
+        case 0:
+          return new BenchmarkInflate();
+        case 1:
+          return new BenchmarkMeasure();
+        default:
+          return new BenchmarkLayout();
+      }
+    }
+
+    @Override
+    public int getCount() {
+      return 3;
+    }
+  }
+}

android/sample/java/com/facebook/samples/yoga/BenchmarkAggregator.java

@@ -0,0 +1,193 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.PrintWriter;
+import java.lang.Math;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+import java.text.DateFormat;
+import java.util.Date;
+
+import android.content.Context;
+import android.util.Log;
+import android.os.Environment;
+
+import static java.util.Collections.sort;
+
+public class BenchmarkAggregator {
+
+  private final int GRAPH_WIDTH = 30;
+  private final int GRAPH_HEIGHT = 6;
+
+  private List<Long> times;
+  private boolean tracing;
+  private long lastTraceStart;
+
+  private boolean statsFresh;
+  private long mean;
+  private long variance;
+  private long stddev;
+  private long min;
+  private long max;
+  private long p10;
+  private long p50;
+  private long p90;
+
+  private String name;
+
+  public BenchmarkAggregator(String name) {
+    times = new ArrayList<>();
+    tracing = false;
+    this.name = name;
+  }
+
+  public void startTrace() {
+    if (tracing) {
+      throw new RuntimeException("Cannot start trace while running previous one");
+    }
+    tracing = true;
+    lastTraceStart = System.nanoTime();
+  }
+
+  public void endTrace() {
+    if (!tracing) {
+      throw new RuntimeException("Cannot stop trace if none are running!");
+    }
+    times.add(System.nanoTime() - lastTraceStart);
+    tracing = false;
+    statsFresh = false;
+  }
+
+  private void computeStats() {
+    if (statsFresh) {
+      return;
+    }
+
+    sort(times);
+
+    min = Long.MAX_VALUE;
+    max = -1;
+    mean = 0;
+    for (long f: times) {
+      mean += f;
+      if (f < min) {
+        min = f;
+      }
+      if (f > max) {
+        max = f;
+      }
+    }
+    mean /= times.size();
+
+    variance = 0;
+    for (long f: times) {
+      variance += (f-mean)*(f-mean);
+    }
+    variance /= times.size();
+    stddev = (long) Math.sqrt((double) variance);
+
+    p10 = times.get(times.size()*10/100);
+    p50 = times.get(times.size()*50/100);
+    p90 = times.get(times.size()*90/100);
+
+    statsFresh = true;
+  }
+
+  public String toString() {
+    computeStats();
+    return String.format(
+        "%s:\n" +
+            "| %d samples\n" +
+            "| Mean %.3f\u00B1%.3fms\n" + // plusminus
+            "| Min %.3fms ; Max %.3fms\n" +
+            "| p10 %.3fms ; p50 %.3fms ; p90 %.3fms\n" +
+            "%s",
+        name,
+        times.size(),
+        mean/10e6,
+        stddev/10e6,
+        min/10e6,
+        max/10e6,
+        p10/10e6,
+        p50/10e6,
+        p90/10e6,
+        makeGraph());
+  }
+
+  private String makeGraph() {
+    char canvas[][] = new char[GRAPH_HEIGHT][GRAPH_WIDTH];
+    for (int i = 0; i < GRAPH_HEIGHT; i++)
+      for (int j = 0; j < GRAPH_WIDTH; j++)
+        canvas[i][j] = ' ';
+
+    long bucketSize = (p90 - p10) / GRAPH_WIDTH+1;
+    int bucketCount[] = new int[GRAPH_WIDTH];
+    for (long time : times) {
+      if (time<p90 && time>p10) {
+        bucketCount[(int) ((time - p10) / bucketSize)]++;
+      }
+    }
+
+    int maxBucket = 0;
+    for (int i = 0; i < GRAPH_WIDTH; i++)
+      if (bucketCount[i] > maxBucket) {
+        maxBucket = bucketCount[i];
+      }
+
+    for (int i = 0; i < GRAPH_HEIGHT; i++)
+      for (int j = 0; j < GRAPH_WIDTH; j++)
+        if (i < bucketCount[j] * GRAPH_HEIGHT / maxBucket) {
+          canvas[i][j] = 'Z';
+        }
+
+    String graph = new String();
+    for (int i = 0; i < GRAPH_HEIGHT; i++)
+    {
+      int percentage = 100 * (GRAPH_HEIGHT - i - 1) * maxBucket / (times.size() * GRAPH_HEIGHT);
+      graph += String.format("| %2d%% ", percentage);
+      for (int j = 0; j < GRAPH_WIDTH; j++)
+        graph += canvas[GRAPH_HEIGHT-1-i][j];
+      graph += '\n';
+    }
+
+    graph += "|     p10";
+    for (int i = 0; i < GRAPH_WIDTH-6; i++)
+      graph += " ";
+    graph += "p90\n";
+    return graph;
+  }
+
+  /**
+   * Dumps the collected times to a file on the device.  This allows us to grab the raw data
+   * and perform more in-depth analysis.
+   */
+  public void dump(Context context) {
+    String state = Environment.getExternalStorageState();
+    if (!Environment.MEDIA_MOUNTED.equals(state)) {
+      Log.e("YogaLayoutBenchmark","No external file storage");
+      return;
+    }
+
+    SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
+    String filename = format.format(new Date()) + "_" + name.replace(' ','_');
+    File file = new File(context.getExternalFilesDir(
+            Environment.DIRECTORY_DOCUMENTS), filename);
+
+    try {
+      PrintWriter printWriter = new PrintWriter(file);
+      for (long l : times) {
+        printWriter.println(l);
+      }
+      printWriter.close();
+
+      Log.i("YogaLayoutBenchmark","Benchmark data saved in "+file.getPath());
+    } catch (java.io.IOException e) {
+      Log.e("YogaLayoutBenchmark", "Could not save benchmark data", e);
+    }
+  }
+}

android/sample/java/com/facebook/samples/yoga/BenchmarkFragment.java

@@ -0,0 +1,110 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+
+import java.util.Random;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+import android.widget.LinearLayout;
+import android.widget.Spinner;
+import android.widget.TextView;
+import android.widget.ArrayAdapter;
+import android.widget.AdapterView;
+
+import com.facebook.samples.yoga.R;
+import com.facebook.yoga.android.YogaLayout;
+
+public class BenchmarkFragment extends Fragment implements AdapterView.OnItemSelectedListener {
+  private LayoutInflater mInflater;
+
+  protected com.facebook.yoga.android.YogaLayout rootLayout;
+  protected int yogaLayout;
+  protected int linearLayout;
+
+  static final Random random = new Random();
+
+  static void randomizeText(View root) {
+    if (root instanceof TextView) {
+      ((TextView) root).setText("" + random.nextInt(1000));
+      ((TextView) root).setTextSize(10 + random.nextInt(20));
+      ViewParent parent = root.getParent();
+      if (parent instanceof YogaLayout) {
+        ((YogaLayout) parent).invalidate(root);
+      }
+    } else if (root instanceof ViewGroup) {
+      for (int i = 0; i < ((ViewGroup) root).getChildCount(); i++) {
+        randomizeText(((ViewGroup) root).getChildAt(i));
+      }
+    }
+  }
+
+  public BenchmarkFragment() {
+  }
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+  }
+
+  @Override
+  public View onCreateView(
+      LayoutInflater inflater,
+      ViewGroup container,
+      Bundle savedInstanceState) {
+    mInflater = inflater;
+
+    rootLayout = (YogaLayout) inflater.inflate(
+        R.layout.benchmark_fragment,
+        container,
+        false);
+
+    Spinner benchmarkSelect = (Spinner) rootLayout.findViewById(R.id.benchmarkSelect);
+    String[] items = new String[]{"Basic", "Typical", "Nested"};
+    ArrayAdapter<String> adapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_dropdown_item, items);
+    benchmarkSelect.setAdapter(adapter);
+    benchmarkSelect.setOnItemSelectedListener(this);
+    return rootLayout;
+  }
+
+  @Override
+  public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
+    switch (pos) {
+      case 0:
+        yogaLayout = R.layout.benchmark_layout_1;
+        linearLayout = R.layout.benchmark_layout_1_linear;
+        break;
+      case 1:
+        yogaLayout = R.layout.benchmark_layout_2;
+        linearLayout = R.layout.benchmark_layout_2_linear;
+        break;
+      case 2:
+      default:
+        yogaLayout = R.layout.benchmark_layout_3;
+        linearLayout = R.layout.benchmark_layout_3_linear;
+        break;
+    }
+    updatePreview();
+  }
+
+  @Override
+  public void onNothingSelected(AdapterView<?> parent) {
+    yogaLayout = R.layout.benchmark_layout_1;
+    linearLayout = R.layout.benchmark_layout_1_linear;
+    updatePreview();
+  }
+
+  private void updatePreview() {
+    LinearLayout previewLayout = (LinearLayout) rootLayout.findViewById(R.id.preview);
+    View v  = mInflater.inflate(yogaLayout, rootLayout, false);
+    v.setLayoutParams(new LinearLayout.LayoutParams(
+        LinearLayout.LayoutParams.MATCH_PARENT,
+        LinearLayout.LayoutParams.MATCH_PARENT));
+    previewLayout.removeAllViews();
+    previewLayout.addView(v);
+  }
+}

android/sample/java/com/facebook/samples/yoga/BenchmarkInflate.java

@@ -0,0 +1,65 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.Button;
+import android.view.ViewGroup;
+import android.util.Log;
+import com.facebook.samples.yoga.R;
+
+public class BenchmarkInflate extends BenchmarkFragment {
+
+  @Override
+  public View onCreateView(
+    LayoutInflater inflater,
+    ViewGroup container,
+    Bundle savedInstanceState) {
+    super.onCreateView(inflater, container, savedInstanceState);
+
+    Button b = (Button) rootLayout.findViewById(R.id.btn);
+    b.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        startBenchmark();
+      }
+    });
+
+    return rootLayout;
+  }
+
+  protected void startBenchmark() {
+    LayoutInflater inflater = LayoutInflater.from(getActivity());
+    TextView textView = (TextView) rootLayout.findViewById(R.id.text);
+
+    final int ITERATIONS = 500;
+
+    inflater.inflate(yogaLayout, null);
+    inflater.inflate(linearLayout, null);
+
+    BenchmarkAggregator yogaInflationAggregator = new BenchmarkAggregator("Yoga Inflate");
+    BenchmarkAggregator linearInflationAggregator = new BenchmarkAggregator("Linear Inflate");
+    for (int i = 0; i < ITERATIONS; i++) {
+      yogaInflationAggregator.startTrace();
+      inflater.inflate(yogaLayout, null);
+      yogaInflationAggregator.endTrace();
+      linearInflationAggregator.startTrace();
+      inflater.inflate(linearLayout, null);
+      linearInflationAggregator.endTrace();
+    }
+
+    textView.setText(
+        yogaInflationAggregator.toString()+
+            "\n"+
+            linearInflationAggregator.toString());
+    Log.i(
+      "YogaLayoutBenchmark",
+      yogaInflationAggregator.toString()+
+        "\n"+
+        linearInflationAggregator.toString());
+    rootLayout.invalidate();
+  }
+}

android/sample/java/com/facebook/samples/yoga/BenchmarkLayout.java

@@ -0,0 +1,74 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.TextView;
+import com.facebook.samples.yoga.R;
+
+import java.util.Random;
+
+public class BenchmarkLayout extends BenchmarkFragment {
+
+  @Override
+  public View onCreateView(
+    LayoutInflater inflater,
+    ViewGroup container,
+    Bundle savedInstanceState) {
+    super.onCreateView(inflater, container, savedInstanceState);
+
+    Button b = (Button) rootLayout.findViewById(R.id.btn);
+    b.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        startBenchmark();
+      }
+    });
+
+    return rootLayout;
+  }
+
+  protected void startBenchmark() {
+    LayoutInflater inflater = LayoutInflater.from(getActivity());
+    TextView textView = (TextView) rootLayout.findViewById(R.id.text);
+    Random random = new Random();
+
+    final int ITERATIONS = 500;
+
+    BenchmarkAggregator yogaInflationAggregator = new BenchmarkAggregator("Yoga Layout");
+    BenchmarkAggregator linearInflationAggregator = new BenchmarkAggregator("Linear Layout");
+    View yogaView = inflater.inflate(yogaLayout, null);
+    View linearView = inflater.inflate(linearLayout, null);
+    for (int i = 0; i < ITERATIONS; i++) {
+      randomizeText(yogaView);
+      randomizeText(linearView);
+      yogaView.measure(
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY),
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY));
+      linearView.measure(
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY),
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY));
+      yogaInflationAggregator.startTrace();
+      yogaView.layout(0, 0, yogaView.getMeasuredWidth(), yogaView.getMeasuredHeight());
+      yogaInflationAggregator.endTrace();
+      linearInflationAggregator.startTrace();
+      linearView.layout(0, 0, linearView.getMeasuredWidth(), linearView.getMeasuredHeight());
+      linearInflationAggregator.endTrace();
+    }
+
+    textView.setText(
+        yogaInflationAggregator.toString()+
+            "\n"+
+            linearInflationAggregator.toString());
+    Log.i(
+      "YogaLayoutBenchmark",
+      yogaInflationAggregator.toString()+
+        "\n"+
+        linearInflationAggregator.toString());
+  }
+}

android/sample/java/com/facebook/samples/yoga/BenchmarkMeasure.java

@@ -0,0 +1,75 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.samples.yoga;
+
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.TextView;
+import com.facebook.samples.yoga.R;
+
+import java.util.Random;
+
+public class BenchmarkMeasure extends BenchmarkFragment {
+
+  @Override
+  public View onCreateView(
+    LayoutInflater inflater,
+    ViewGroup container,
+    Bundle savedInstanceState) {
+    super.onCreateView(inflater, container, savedInstanceState);
+
+    Button b = (Button) rootLayout.findViewById(R.id.btn);
+    b.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        startBenchmark();
+      }
+    });
+
+    return rootLayout;
+  }
+
+  protected void startBenchmark() {
+    LayoutInflater inflater = LayoutInflater.from(getActivity());
+    TextView textView = (TextView) rootLayout.findViewById(R.id.text);
+    Random random = new Random();
+
+    final int ITERATIONS = 500;
+
+    BenchmarkAggregator yogaMeasureAggregator = new BenchmarkAggregator("Yoga Measure");
+    BenchmarkAggregator linearMeasureAggregator = new BenchmarkAggregator("Linear Measure");
+    View yogaView = inflater.inflate(yogaLayout, null);
+    View linearView = inflater.inflate(linearLayout, null);
+    for (int i = 0; i < ITERATIONS; i++) {
+      randomizeText(yogaView);
+      randomizeText(linearView);
+      yogaMeasureAggregator.startTrace();
+      yogaView.measure(
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY),
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY));
+      yogaMeasureAggregator.endTrace();
+      linearMeasureAggregator.startTrace();
+      linearView.measure(
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY),
+          View.MeasureSpec.makeMeasureSpec(1000, View.MeasureSpec.EXACTLY));
+      linearMeasureAggregator.endTrace();
+    }
+
+    textView.setText(
+        yogaMeasureAggregator.toString()+
+            "\n"+
+            linearMeasureAggregator.toString());
+    Log.i(
+      "YogaLayoutBenchmark",
+      yogaMeasureAggregator.toString()+
+        "\n"+
+        linearMeasureAggregator.toString());
+
+    yogaMeasureAggregator.dump(getActivity());
+    linearMeasureAggregator.dump(getActivity());
+  }
+}

android/sample/java/com/facebook/samples/yoga/MainActivity.java

@@ -8,9 +8,13 @@
 
 package com.facebook.samples.yoga;
 
+import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.view.LayoutInflater;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.Menu;
 
 import com.facebook.samples.yoga.R;
 import com.facebook.soloader.SoLoader;
@@ -21,7 +25,7 @@ import com.facebook.yoga.android.YogaViewLayoutFactory;
  * {@code main_layout.xml}) that shows off the awesome functionality of the Yoga layout engine
  * as well as some optimisations on layout systems that it facilitates.
  */
-public class MainActivity extends ActionBarActivity {
+public class MainActivity extends AppCompatActivity {
 
   @Override
   public void onCreate(Bundle savedInstanceState) {
@@ -31,4 +35,20 @@ public class MainActivity extends ActionBarActivity {
 
     setContentView(R.layout.main_layout);
   }
+
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    MenuInflater inflater = getMenuInflater();
+    inflater.inflate(R.menu.action_bar_home, menu);
+    return true;
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    // There is only one option
+    Intent intent = new Intent(this, BenchmarkActivity.class);
+    startActivity(intent);
+    this.finish();
+    return true;
+  }
 }

android/sample/res/layout/benchmark_fragment.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<YogaLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/rt"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    yoga:yg_flexDirection="column"
+    >
+  <VirtualYogaLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      yoga:yg_flexDirection="row"
+      yoga:yg_height="50dp"
+      >
+    <Button
+        android:id="@+id/btn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="Run benchmark"
+        yoga:yg_flex="1"
+        />
+    <Spinner
+        android:id="@+id/benchmarkSelect"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:spinnerMode="dropdown"
+        />
+  </VirtualYogaLayout>
+  <TextView
+      android:id="@+id/text"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:textSize="10sp"
+      android:fontFamily="monospace"
+      yoga:yg_flex="1"
+      />
+  <View
+      android:layout_width="match_parent"
+      android:layout_height="2dp"
+      android:background="@color/yoga_grey"
+      />
+  <LinearLayout
+      android:id="@+id/preview"
+      android:layout_width="match_parent"
+      android:layout_height="60dp"
+      android:orientation="horizontal"
+      />
+</YogaLayout>

android/sample/res/layout/benchmark_layout_1.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<YogaLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="60dp"
+    yoga:yg_flexDirection="row"
+    yoga:yg_alignItems="center"
+    >
+  <View
+      android:layout_width="50dp"
+      android:layout_height="50dp"
+      android:background="@color/yoga_blue"
+      yoga:yg_flex="0"
+      yoga:yg_marginAll="5dp"
+      />
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:text="@string/child_1_text"
+      yoga:yg_flex="0"
+      />
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:text="@string/child_2_text"
+      yoga:yg_flex="1"
+      yoga:yg_marginHorizontal="5dp"
+  />
+</YogaLayout>

android/sample/res/layout/benchmark_layout_1_linear.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center"
+    >
+  <ImageView
+      android:layout_width="50dp"
+      android:layout_height="50dp"
+      android:layout_margin="5dp"
+      android:src="@drawable/ic_launcher"
+      />
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:text="@string/child_1_text"
+      />
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_weight="1"
+      android:layout_marginLeft="5dp"
+      android:layout_marginRight="5dp"
+      android:text="@string/child_2_text"
+      />
+</LinearLayout>

android/sample/res/layout/benchmark_layout_2.xml

@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<YogaLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="60dp"
+    yoga:yg_flexDirection="column"
+    yoga:yg_alignItems="stretch"
+    >
+  <View
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:background="@color/yoga_blue"
+      yoga:yg_flex="1"
+      />
+  <VirtualYogaLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      yoga:height="40dp"
+      yoga:yg_flexDirection="row"
+      yoga:yg_alignItems="stretch"
+      >
+    <View
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@color/yoga_blue"
+        yoga:yg_marginAll="10dp"
+        yoga:yg_aspectRatio="1"
+        />
+    <VirtualYogaLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        yoga:height="40dp"
+        yoga:yg_flexDirection="column"
+        yoga:yg_alignItems="stretch"
+        yoga:yg_flex="1"
+        yoga:yg_justifyContent="space_around"
+        >
+      <VirtualYogaLayout
+           android:layout_width="wrap_content"
+           android:layout_height="wrap_content"
+           yoga:height="8dp"
+           yoga:yg_flexDirection="row"
+           yoga:yg_alignItems="stretch"
+           >
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/child_1_text"
+            android:textSize="5sp"
+            yoga:yg_flex="1"
+            />
+        <View
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:background="@color/yoga_blue"
+            yoga:yg_aspectRatio="1"
+            />
+      </VirtualYogaLayout>
+      <VirtualYogaLayout
+           android:layout_width="wrap_content"
+           android:layout_height="wrap_content"
+           yoga:height="8dp"
+           yoga:yg_flexDirection="row"
+           yoga:yg_alignItems="stretch"
+           >
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/child_1_text"
+            android:textSize="5sp"
+            yoga:yg_flex="1"
+            />
+        <View
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:background="@color/yoga_blue"
+            yoga:yg_aspectRatio="1"
+            />
+      </VirtualYogaLayout>
+      <VirtualYogaLayout
+           android:layout_width="wrap_content"
+           android:layout_height="wrap_content"
+           yoga:height="8dp"
+           yoga:yg_flexDirection="row"
+           yoga:yg_alignItems="stretch"
+           >
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/child_1_text"
+            android:textSize="5sp"
+            yoga:yg_flex="1"
+            />
+        <View
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:background="@color/yoga_blue"
+            yoga:yg_aspectRatio="1"
+            />
+      </VirtualYogaLayout>
+    </VirtualYogaLayout>
+  </VirtualYogaLayout>
+</YogaLayout>

android/sample/res/layout/benchmark_layout_2_linear.xml

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="60dp"
+    android:orientation="vertical"
+    >
+  <View
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:src="@drawable/ic_launcher"
+      android:background="@color/yoga_blue"
+      android:layout_weight="1"
+      />
+  <LinearLayout
+      android:layout_width="match_parent"
+      android:layout_height="40dp"
+      android:orientation="horizontal"
+      >
+      <View
+          android:layout_width="20dp"
+          android:layout_height="20dp"
+          android:src="@drawable/ic_launcher"
+          android:background="@color/yoga_blue"
+          android:layout_margin="10dp"
+          />
+      <LinearLayout
+          android:layout_width="wrap_content"
+          android:layout_height="40dp"
+          android:layout_weight="1"
+          android:orientation="vertical"
+          >
+        <LinearLayout
+             android:layout_width="match_parent"
+             android:layout_height="8dp"
+             android:orientation="horizontal"
+             android:layout_marginTop="4dp"
+             >
+          <TextView
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:text="@string/child_1_text"
+              android:textSize="5sp"
+              android:layout_weight="1"
+              />
+          <View
+              android:layout_width="8dp"
+              android:layout_height="8dp"
+              android:src="@drawable/ic_launcher"
+              android:background="@color/yoga_blue"
+              />
+        </LinearLayout>
+        <LinearLayout
+             android:layout_width="match_parent"
+             android:layout_height="8dp"
+             android:orientation="horizontal"
+             android:layout_marginTop="4dp"
+             >
+          <TextView
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:text="@string/child_1_text"
+              android:textSize="5sp"
+              android:layout_weight="1"
+              />
+          <View
+              android:layout_width="8dp"
+              android:layout_height="8dp"
+              android:src="@drawable/ic_launcher"
+              android:background="@color/yoga_blue"
+              />
+        </LinearLayout>
+        <LinearLayout
+             android:layout_width="match_parent"
+             android:layout_height="8dp"
+             android:orientation="horizontal"
+             android:layout_marginTop="4dp"
+             >
+          <TextView
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:text="@string/child_1_text"
+              android:textSize="5sp"
+              android:layout_weight="1"
+              />
+          <View
+              android:layout_width="8dp"
+              android:layout_height="8dp"
+              android:src="@drawable/ic_launcher"
+              android:background="@color/yoga_blue"
+              />
+        </LinearLayout>
+      </LinearLayout>
+    </LinearLayout>
+</LinearLayout>

android/sample/res/layout/benchmark_layout_3.xml

@@ -0,0 +1,206 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<YogaLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    yoga:yg_alignItems="center"
+    yoga:yg_flexDirection="row"
+    yoga:yg_justifyContent="center"
+    >
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:background="@color/yoga_blue"
+      yoga:yg_marginLeft="10dp"
+      />
+  <VirtualYogaLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      yoga:yg_flexDirection="column"
+      yoga:yg_flex="1"
+      >
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@color/yoga_grey"
+        yoga:yg_marginLeft="10dp"
+        />
+    <VirtualYogaLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        yoga:yg_flexDirection="row"
+        yoga:yg_flex="1"
+        >
+      <TextView
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:background="@color/yoga_grey"
+          yoga:yg_marginLeft="10dp"
+          />
+      <VirtualYogaLayout
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          yoga:yg_flexDirection="row"
+          yoga:yg_flex="1"
+          >
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:background="@color/yoga_blue"
+            yoga:yg_marginLeft="10dp"
+            />
+        <VirtualYogaLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            yoga:yg_flexDirection="row"
+            yoga:yg_flex="1"
+            >
+          <TextView
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:background="@color/yoga_grey"
+              yoga:yg_marginLeft="10dp"
+              />
+          <VirtualYogaLayout
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              yoga:yg_flexDirection="row"
+              yoga:yg_flex="1"
+              >
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:background="@color/yoga_grey"
+                yoga:yg_marginLeft="10dp"
+                />
+            <VirtualYogaLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                yoga:yg_flexDirection="column"
+                yoga:yg_flex="1"
+                >
+              <TextView
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:background="@color/yoga_blue"
+                  yoga:yg_marginLeft="10dp"
+                  />
+              <VirtualYogaLayout
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  yoga:yg_flexDirection="row"
+                  yoga:yg_flex="1"
+                  >
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="@color/yoga_grey"
+                    yoga:yg_marginLeft="10dp"
+                    />
+                <VirtualYogaLayout
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    yoga:yg_flexDirection="row"
+                    yoga:yg_flex="1"
+                    >
+                  <TextView
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:background="@color/yoga_grey"
+                      yoga:yg_marginLeft="10dp"
+                      />
+                  <VirtualYogaLayout
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      yoga:yg_flexDirection="row"
+                      yoga:yg_flex="1"
+                      >
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:background="@color/yoga_blue"
+                        yoga:yg_marginLeft="10dp"
+                        />
+                    <VirtualYogaLayout
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        yoga:yg_flexDirection="row"
+                        yoga:yg_flex="1"
+                        >
+                      <TextView
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:background="@color/yoga_grey"
+                          yoga:yg_marginLeft="10dp"
+                          />
+                      <VirtualYogaLayout
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          yoga:yg_flexDirection="column"
+                          yoga:yg_flex="1"
+                          >
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:background="@color/yoga_grey"
+                            yoga:yg_marginLeft="10dp"
+                            />
+                        <VirtualYogaLayout
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            yoga:yg_flexDirection="row"
+                            yoga:yg_flex="1"
+                            >
+                          <TextView
+                              android:layout_width="wrap_content"
+                              android:layout_height="wrap_content"
+                              android:background="@color/yoga_blue"
+                              yoga:yg_marginLeft="10dp"
+                              />
+                          <VirtualYogaLayout
+                              android:layout_width="wrap_content"
+                              android:layout_height="wrap_content"
+                              yoga:yg_flexDirection="row"
+                              yoga:yg_flex="1"
+                              >
+                            <TextView
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:background="@color/yoga_grey"
+                                yoga:yg_marginLeft="10dp"
+                                />
+                            <VirtualYogaLayout
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                yoga:yg_flexDirection="row"
+                                yoga:yg_flex="1"
+                                >
+                              <TextView
+                                  android:layout_width="wrap_content"
+                                  android:layout_height="wrap_content"
+                                  android:background="@color/yoga_grey"
+                                  yoga:yg_marginLeft="10dp"
+                                  />
+                              <VirtualYogaLayout
+                                  android:layout_width="wrap_content"
+                                  android:layout_height="wrap_content"
+                                  yoga:yg_flexDirection="row"
+                                  yoga:yg_flex="1"
+                                  >
+                              </VirtualYogaLayout>
+                            </VirtualYogaLayout>
+                          </VirtualYogaLayout>
+                        </VirtualYogaLayout>
+                      </VirtualYogaLayout>
+                    </VirtualYogaLayout>
+                  </VirtualYogaLayout>
+                </VirtualYogaLayout>
+              </VirtualYogaLayout>
+            </VirtualYogaLayout>
+          </VirtualYogaLayout>
+        </VirtualYogaLayout>
+      </VirtualYogaLayout>
+    </VirtualYogaLayout>
+  </VirtualYogaLayout>
+</YogaLayout>

android/sample/res/layout/benchmark_layout_3_linear.xml

@@ -0,0 +1,204 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:gravity="center"
+    android:orientation="horizontal"
+    >
+  <TextView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_marginLeft="10dp"
+      android:background="@color/yoga_blue"
+      />
+  <LinearLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_weight="1"
+      android:orientation="vertical"
+      >
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="10dp"
+        android:background="@color/yoga_grey"
+        />
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:orientation="horizontal"
+        >
+      <TextView
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:layout_marginLeft="10dp"
+          android:background="@color/yoga_grey"
+          />
+      <LinearLayout
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:layout_weight="1"
+          android:orientation="horizontal"
+          >
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="10dp"
+            android:background="@color/yoga_blue"
+            />
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="horizontal"
+            >
+          <TextView
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:layout_marginLeft="10dp"
+              android:background="@color/yoga_grey"
+              />
+          <LinearLayout
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:layout_weight="1"
+              android:orientation="horizontal"
+              >
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="10dp"
+                android:background="@color/yoga_grey"
+                />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:orientation="vertical"
+                >
+              <TextView
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:layout_marginLeft="10dp"
+                  android:background="@color/yoga_blue"
+                  />
+              <LinearLayout
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:layout_weight="1"
+                  android:orientation="horizontal"
+                  >
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="10dp"
+                    android:background="@color/yoga_grey"
+                    />
+                <LinearLayout
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:orientation="horizontal"
+                    >
+                  <TextView
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:layout_marginLeft="10dp"
+                      android:background="@color/yoga_grey"
+                      />
+                  <LinearLayout
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:layout_weight="1"
+                      android:orientation="horizontal"
+                      >
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_marginLeft="10dp"
+                        android:background="@color/yoga_blue"
+                        />
+                    <LinearLayout
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1"
+                        android:orientation="horizontal"
+                        >
+                      <TextView
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:layout_marginLeft="10dp"
+                          android:background="@color/yoga_grey"
+                          />
+                      <LinearLayout
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:layout_weight="1"
+                          android:orientation="vertical"
+                          >
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_marginLeft="10dp"
+                            android:background="@color/yoga_grey"
+                            />
+                        <LinearLayout
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1"
+                            android:orientation="horizontal"
+                            >
+                          <TextView
+                              android:layout_width="wrap_content"
+                              android:layout_height="wrap_content"
+                              android:layout_marginLeft="10dp"
+                              android:background="@color/yoga_blue"
+                              />
+                          <LinearLayout
+                              android:layout_width="wrap_content"
+                              android:layout_height="wrap_content"
+                              android:layout_weight="1"
+                              android:orientation="horizontal"
+                              >
+                            <TextView
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:layout_marginLeft="10dp"
+                                android:background="@color/yoga_grey"
+                                />
+                            <LinearLayout
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:layout_weight="1"
+                                android:orientation="horizontal"
+                                >
+                              <TextView
+                                  android:layout_width="wrap_content"
+                                  android:layout_height="wrap_content"
+                                  android:layout_marginLeft="10dp"
+                                  android:background="@color/yoga_grey"
+                                  />
+                              <LinearLayout
+                                  android:layout_width="wrap_content"
+                                  android:layout_height="wrap_content"
+                                  android:layout_weight="1"
+                                  android:orientation="horizontal"
+                                  >
+                              </LinearLayout>
+                            </LinearLayout>
+                          </LinearLayout>
+                        </LinearLayout>
+                      </LinearLayout>
+                    </LinearLayout>
+                  </LinearLayout>
+                </LinearLayout>
+              </LinearLayout>
+            </LinearLayout>
+          </LinearLayout>
+        </LinearLayout>
+      </LinearLayout>
+    </LinearLayout>
+  </LinearLayout>
+</LinearLayout>

android/sample/res/layout/benchmark_select_layout.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<android.support.v4.view.ViewPager
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/viewpager"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        />

android/sample/res/layout/main_layout.xml

@@ -10,7 +10,7 @@
 
 <YogaLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:yoga="http://schemas.android.com/apk/res-auto"
+    xmlns:yoga="http://schemas.android.com/apk/res/com.facebook.samples.yoga"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     >
@@ -18,120 +18,120 @@
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@drawable/sample_children_background"
-      yoga:margin_horizontal="10dp"
+      yoga:yg_marginHorizontal="10dp"
-      yoga:margin_top="5dp"
+      yoga:yg_marginTop="5dp"
-      yoga:flex_direction="row"
+      yoga:yg_flexDirection="row"
-      yoga:align_items="center"
+      yoga:yg_alignItems="center"
       >
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:src="@drawable/ic_launcher"
-        yoga:flex="0"
+        yoga:yg_flex="0"
         />
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/child_1_text"
         android:textColor="@color/children_text"
-        yoga:flex="1"
+        yoga:yg_flex="1"
-        yoga:margin_start="8dp"
+        yoga:yg_marginStart="8dp"
         />
   </YogaLayout>
   <YogaLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@drawable/sample_children_background"
-      yoga:margin_horizontal="10dp"
+      yoga:yg_marginHorizontal="10dp"
-      yoga:margin_top="5dp"
+      yoga:yg_marginTop="5dp"
-      yoga:flex_direction="row"
+      yoga:yg_flexDirection="row"
-      yoga:align_items="center"
+      yoga:yg_alignItems="center"
       >
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:src="@drawable/ic_launcher"
-        yoga:flex="0"
+        yoga:yg_flex="0"
         />
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/child_2_text"
         android:textColor="@color/children_text"
-        yoga:flex="1"
+        yoga:yg_flex="1"
-        yoga:margin_start="8dp"
+        yoga:yg_marginStart="8dp"
         />
   </YogaLayout>
   <YogaLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@drawable/sample_children_background"
-      yoga:margin_horizontal="10dp"
+      yoga:yg_marginHorizontal="10dp"
-      yoga:margin_top="5dp"
+      yoga:yg_marginTop="5dp"
-      yoga:flex_direction="row"
+      yoga:yg_flexDirection="row"
-      yoga:align_items="center"
+      yoga:yg_alignItems="center"
       >
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:src="@drawable/ic_launcher"
-        yoga:flex="0"
+        yoga:yg_flex="0"
         />
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/child_3_text"
         android:textColor="@color/children_text"
-        yoga:flex="1"
+        yoga:yg_flex="1"
-        yoga:margin_start="8dp"
+        yoga:yg_marginStart="8dp"
         />
   </YogaLayout>
   <YogaLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@drawable/sample_children_background"
-      yoga:margin_horizontal="10dp"
+      yoga:yg_marginHorizontal="10dp"
-      yoga:margin_top="5dp"
+      yoga:yg_marginTop="5dp"
-      yoga:flex_direction="row"
+      yoga:yg_flexDirection="row"
-      yoga:align_items="center"
+      yoga:yg_alignItems="center"
       >
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:src="@drawable/ic_launcher"
-        yoga:flex="0"
+        yoga:yg_flex="0"
         />
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/child_4_text"
         android:textColor="@color/children_text"
-        yoga:flex="1"
+        yoga:yg_flex="1"
-        yoga:margin_start="8dp"
+        yoga:yg_marginStart="8dp"
         />
   </YogaLayout>
   <YogaLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:background="@drawable/sample_children_background"
-      yoga:margin_horizontal="10dp"
+      yoga:yg_marginHorizontal="10dp"
-      yoga:margin_top="5dp"
+      yoga:yg_marginTop="5dp"
-      yoga:flex_direction="row"
+      yoga:yg_flexDirection="row"
-      yoga:align_items="center"
+      yoga:yg_alignItems="center"
       >
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:src="@drawable/ic_launcher"
-        yoga:flex="0"
+        yoga:yg_flex="0"
     />
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/child_5_text"
         android:textColor="@color/children_text"
-        yoga:flex="1"
+        yoga:yg_flex="1"
-        yoga:margin_start="10dp"
+        yoga:yg_marginStart="10dp"
         />
   </YogaLayout>
 </YogaLayout>

android/sample/res/menu/action_bar_benchmark.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  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.
+-->
+
+<menu
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    >
+  <item
+      android:id="@+id/action_home"
+      android:title="Home"
+      android:showAsAction="always"
+      />
+</menu>

android/sample/res/menu/action_bar_home.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  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.
+-->
+
+<menu
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    >
+  <item
+      android:id="@+id/action_benchmark"
+      android:title="Benchmark"
+      android:showAsAction="always"
+      />
+</menu>

android/src/main/AndroidManifest.xml

@@ -2,11 +2,9 @@
 
 <!--
   Copyright (c) 2014-present, Facebook, Inc.
-  All rights reserved.
   
-  This source code is licensed under the BSD-style license found in the
+  This source code is licensed under the MIT license found in the
-  LICENSE file in the root directory of this source tree. An additional grant
+  LICENSE file in the root directory of this source tree.
-  of patent rights can be found in the PATENTS file in the same directory.
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
@@ -17,7 +15,7 @@
 
   <uses-sdk
     android:minSdkVersion="15"
-    android:targetSdkVersion="19"
+    android:targetSdkVersion="21"
     />
 
   <application/>

android/src/main/java/com/facebook/yoga/android/BUCK

@@ -1,23 +1,21 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "ANDROID_RES_TARGET", "INFER_ANNOTATIONS_TARGET", "JAVA_TARGET", "JSR_305_TARGET", "SOLOADER_TARGET", "android_library")
 
 android_library(
-  name = 'android',
+    name = "android",
-  srcs = glob(['**/*.java']),
+    srcs = glob(["**/*.java"]),
-  deps = [
+    visibility = [
-    ANDROID_RES_TARGET,
+        "PUBLIC",
-    INFER_ANNOTATIONS_TARGET,
+    ],
-    JAVA_TARGET,
+    deps = [
-    JSR_305_TARGET,
+        ANDROID_RES_TARGET,
-    SOLOADER_TARGET,
+        INFER_ANNOTATIONS_TARGET,
-  ],
+        JAVA_TARGET,
-  visibility = [
+        JSR_305_TARGET,
-    'PUBLIC',
+        SOLOADER_TARGET,
-  ]
+    ],
 )

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

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 package com.facebook.yoga.android;

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

@@ -1,20 +1,14 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 package com.facebook.yoga.android;
 
-import java.util.HashMap;
-import java.util.Map;
-
 import android.content.Context;
 import android.content.res.Configuration;
-import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
@@ -24,11 +18,10 @@ import android.util.SparseArray;
 import android.util.TypedValue;
 import android.view.View;
 import android.view.ViewGroup;
-
-import com.facebook.yoga.android.R;
 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;
@@ -36,10 +29,11 @@ import com.facebook.yoga.YogaMeasureFunction;
 import com.facebook.yoga.YogaMeasureMode;
 import com.facebook.yoga.YogaMeasureOutput;
 import com.facebook.yoga.YogaNode;
-import com.facebook.yoga.YogaNodeAPI;
 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.
@@ -51,15 +45,15 @@ import com.facebook.yoga.YogaWrap;
  * <pre>{@code
  * <YogaLayout
  *     xmlns:android="http://schemas.android.com/apk/res/android"
- *     xmlns:yoga="http://schemas.android.com/apk/res-auto"
+ *     xmlns:yoga="http://schemas.android.com/apk/com.facebook.yoga.android"
- *     android:layout_width="match_parent"
+ *     android:layout_width="match_owner"
- *     android:layout_height="match_parent"
+ *     android:layout_height="match_owner"
  *     yoga:flex_direction="row"
  *     yoga:padding_all="10dp"
  *     >
  *     <TextView
- *         android:layout_width="match_parent"
+ *         android:layout_width="match_owner"
- *         android:layout_height="match_parent"
+ *         android:layout_height="match_owner"
  *         android:text="Hello, World!"
  *         yoga:flex="1"
  *         />
@@ -90,15 +84,20 @@ public class YogaLayout extends ViewGroup {
     mYogaNode.setData(this);
     mYogaNode.setMeasureFunction(new ViewMeasureFunction());
 
-    final LayoutParams layoutParams = new LayoutParams(context, attrs);
+    LayoutParams layoutParams = null;
+    if (attrs != null) {
+      layoutParams = new LayoutParams(context, attrs);
+    } else {
+      layoutParams = (LayoutParams) generateDefaultLayoutParams();
+    }
     applyLayoutParams(layoutParams, mYogaNode, this);
   }
 
-  YogaNode getYogaNode() {
+  public YogaNode getYogaNode() {
     return mYogaNode;
   }
 
-  YogaNode getYogaNodeForView(View view) {
+  public YogaNode getYogaNodeForView(View view) {
     return mYogaNodes.get(view);
   }
 
@@ -106,7 +105,7 @@ public class YogaLayout extends ViewGroup {
    * 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 Toga node is added to the Yoga tree and the child is added
+   * 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
@@ -153,7 +152,11 @@ public class YogaLayout extends ViewGroup {
     if (child instanceof YogaLayout) {
       childNode = ((YogaLayout) child).getYogaNode();
     } else {
-      childNode = new YogaNode();
+      if(mYogaNodes.containsKey(child)) {
+        childNode = mYogaNodes.get(child);
+      } else {
+        childNode = new YogaNode();
+      }
 
       childNode.setData(child);
       childNode.setMeasureFunction(new ViewMeasureFunction());
@@ -231,17 +234,39 @@ public class YogaLayout extends ViewGroup {
     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 parent = node.getParent();
+    final YogaNode owner = node.getOwner();
 
-    for (int i = 0; i < parent.getChildCount(); i++) {
+    for (int i = 0; i < owner.getChildCount(); i++) {
-      if (parent.getChildAt(i).equals(node)) {
+      if (owner.getChildAt(i).equals(node)) {
-        parent.removeChildAt(i);
+        owner.removeChildAt(i);
         break;
       }
     }
@@ -256,10 +281,13 @@ public class YogaLayout extends ViewGroup {
 
   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()),
@@ -267,11 +295,7 @@ public class YogaLayout extends ViewGroup {
           View.MeasureSpec.makeMeasureSpec(
               Math.round(node.getLayoutHeight()),
               View.MeasureSpec.EXACTLY));
-      view.layout(
+      view.layout(left, top, left + view.getMeasuredWidth(), top + view.getMeasuredHeight());
-          Math.round(xOffset + node.getLayoutX()),
-          Math.round(yOffset + node.getLayoutY()),
-          Math.round(xOffset + node.getLayoutX() + node.getLayoutWidth()),
-          Math.round(yOffset + node.getLayoutY() + node.getLayoutHeight()));
     }
 
     final int childrenCount = node.getChildCount();
@@ -291,11 +315,9 @@ public class YogaLayout extends ViewGroup {
 
   @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 parent's onLayout, in which
+    // 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) &&
+    if (!(getParent() instanceof YogaLayout)) {
-        Math.round(mYogaNode.getLayoutHeight()) != b-t &&
-        Math.round(mYogaNode.getLayoutWidth()) != r-l) {
         createLayout(
             MeasureSpec.makeMeasureSpec(r - l, MeasureSpec.EXACTLY),
             MeasureSpec.makeMeasureSpec(b - t, MeasureSpec.EXACTLY));
@@ -340,7 +362,6 @@ public class YogaLayout extends ViewGroup {
     if (widthMode == MeasureSpec.AT_MOST) {
       mYogaNode.setMaxWidth(widthSize);
     }
-
     mYogaNode.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
   }
 
@@ -379,192 +400,227 @@ public class YogaLayout extends ViewGroup {
       }
     }
 
-    for (int i = 0; i < layoutParameters.attributes.size(); i++) {
+    for (int i = 0; i < layoutParameters.numericAttributes.size(); i++) {
-      final int attribute = layoutParameters.attributes.keyAt(i);
+      final int attribute = layoutParameters.numericAttributes.keyAt(i);
-      final float value = layoutParameters.attributes.valueAt(i);
+      final float value = layoutParameters.numericAttributes.valueAt(i);
 
-      if (attribute == R.styleable.yoga_align_content) {
+      if (attribute == R.styleable.yoga_yg_alignContent) {
         node.setAlignContent(YogaAlign.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_align_items) {
+      } else if (attribute == R.styleable.yoga_yg_alignItems) {
         node.setAlignItems(YogaAlign.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_align_self) {
+      } else if (attribute == R.styleable.yoga_yg_alignSelf) {
         node.setAlignSelf(YogaAlign.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_aspect_ratio) {
+      } else if (attribute == R.styleable.yoga_yg_aspectRatio) {
         node.setAspectRatio(value);
-      } else if (attribute == R.styleable.yoga_border_left) {
+      } else if (attribute == R.styleable.yoga_yg_borderLeft) {
         node.setBorder(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_border_top) {
+      } else if (attribute == R.styleable.yoga_yg_borderTop) {
         node.setBorder(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_border_right) {
+      } else if (attribute == R.styleable.yoga_yg_borderRight) {
         node.setBorder(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_border_bottom) {
+      } else if (attribute == R.styleable.yoga_yg_borderBottom) {
         node.setBorder(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_border_start) {
+      } else if (attribute == R.styleable.yoga_yg_borderStart) {
         node.setBorder(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_border_end) {
+      } else if (attribute == R.styleable.yoga_yg_borderEnd) {
         node.setBorder(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_border_horizontal) {
+      } else if (attribute == R.styleable.yoga_yg_borderHorizontal) {
         node.setBorder(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_border_vertical) {
+      } else if (attribute == R.styleable.yoga_yg_borderVertical) {
         node.setBorder(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_border_all) {
+      } else if (attribute == R.styleable.yoga_yg_borderAll) {
         node.setBorder(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_direction) {
+      } else if (attribute == R.styleable.yoga_yg_direction) {
         node.setDirection(YogaDirection.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_flex) {
+      } 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_flex_basis) {
+      } else if (attribute == R.styleable.yoga_yg_flexBasis) {
         node.setFlexBasis(value);
-      } else if (attribute == R.styleable.yoga_flex_basis_percent) {
+      } else if (attribute == R.styleable.yoga_yg_flexDirection) {
-        node.setFlexBasisPercent(value);
-      } else if (attribute == R.styleable.yoga_flex_direction) {
         node.setFlexDirection(YogaFlexDirection.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_flex_grow) {
+      } else if (attribute == R.styleable.yoga_yg_flexGrow) {
         node.setFlexGrow(value);
-      } else if (attribute == R.styleable.yoga_flex_shrink) {
+      } else if (attribute == R.styleable.yoga_yg_flexShrink) {
         node.setFlexShrink(value);
-      } else if (attribute == R.styleable.yoga_height) {
+      } else if (attribute == R.styleable.yoga_yg_height) {
         node.setHeight(value);
-      } else if (attribute == R.styleable.yoga_height_percent) {
+      } else if (attribute == R.styleable.yoga_yg_marginLeft) {
-        node.setHeightPercent(value);
-      } else if (attribute == R.styleable.yoga_margin_left) {
         node.setMargin(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_justify_content) {
+      } else if (attribute == R.styleable.yoga_yg_justifyContent) {
         node.setJustifyContent(YogaJustify.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_margin_top) {
+      } else if (attribute == R.styleable.yoga_yg_marginTop) {
         node.setMargin(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_margin_right) {
+      } else if (attribute == R.styleable.yoga_yg_marginRight) {
         node.setMargin(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_margin_bottom) {
+      } else if (attribute == R.styleable.yoga_yg_marginBottom) {
         node.setMargin(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_margin_start) {
+      } else if (attribute == R.styleable.yoga_yg_marginStart) {
         node.setMargin(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_margin_end) {
+      } else if (attribute == R.styleable.yoga_yg_marginEnd) {
         node.setMargin(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_margin_horizontal) {
+      } else if (attribute == R.styleable.yoga_yg_marginHorizontal) {
         node.setMargin(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_margin_vertical) {
+      } else if (attribute == R.styleable.yoga_yg_marginVertical) {
         node.setMargin(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_margin_all) {
+      } else if (attribute == R.styleable.yoga_yg_marginAll) {
         node.setMargin(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_left) {
+      } else if (attribute == R.styleable.yoga_yg_maxHeight) {
-        node.setMarginPercent(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_top) {
-        node.setMarginPercent(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_right) {
-        node.setMarginPercent(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_bottom) {
-        node.setMarginPercent(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_start) {
-        node.setMarginPercent(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_end) {
-        node.setMarginPercent(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_horizontal) {
-        node.setMarginPercent(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_vertical) {
-        node.setMarginPercent(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_margin_percent_all) {
-        node.setMarginPercent(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_max_height) {
         node.setMaxHeight(value);
-      } else if (attribute == R.styleable.yoga_max_height_percent) {
+      } else if (attribute == R.styleable.yoga_yg_maxWidth) {
-        node.setMaxHeightPercent(value);
-      } else if (attribute == R.styleable.yoga_max_width) {
         node.setMaxWidth(value);
-      } else if (attribute == R.styleable.yoga_max_width_percent) {
+      } else if (attribute == R.styleable.yoga_yg_minHeight) {
-        node.setMaxWidthPercent(value);
-      } else if (attribute == R.styleable.yoga_min_height) {
         node.setMinHeight(value);
-      } else if (attribute == R.styleable.yoga_min_height_percent) {
+      } else if (attribute == R.styleable.yoga_yg_minWidth) {
-        node.setMinHeightPercent(value);
-      } else if (attribute == R.styleable.yoga_min_width) {
         node.setMinWidth(value);
-      } else if (attribute == R.styleable.yoga_min_width_percent) {
+      } else if (attribute == R.styleable.yoga_yg_overflow) {
-        node.setMinWidthPercent(value);
-      } else if (attribute == R.styleable.yoga_overflow) {
         node.setOverflow(YogaOverflow.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_padding_left) {
+      } else if (attribute == R.styleable.yoga_yg_paddingLeft) {
         node.setPadding(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_padding_top) {
+      } else if (attribute == R.styleable.yoga_yg_paddingTop) {
         node.setPadding(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_padding_right) {
+      } else if (attribute == R.styleable.yoga_yg_paddingRight) {
         node.setPadding(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_padding_bottom) {
+      } else if (attribute == R.styleable.yoga_yg_paddingBottom) {
         node.setPadding(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_padding_start) {
+      } else if (attribute == R.styleable.yoga_yg_paddingStart) {
         node.setPadding(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_padding_end) {
+      } else if (attribute == R.styleable.yoga_yg_paddingEnd) {
         node.setPadding(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_padding_horizontal) {
+      } else if (attribute == R.styleable.yoga_yg_paddingHorizontal) {
         node.setPadding(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_padding_vertical) {
+      } else if (attribute == R.styleable.yoga_yg_paddingVertical) {
         node.setPadding(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_padding_all) {
+      } else if (attribute == R.styleable.yoga_yg_paddingAll) {
         node.setPadding(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_left) {
+      } else if (attribute == R.styleable.yoga_yg_positionLeft) {
-        node.setPaddingPercent(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_top) {
-        node.setPaddingPercent(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_right) {
-        node.setPaddingPercent(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_bottom) {
-        node.setPaddingPercent(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_start) {
-        node.setPaddingPercent(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_end) {
-        node.setPaddingPercent(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_horizontal) {
-        node.setPaddingPercent(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_vertical) {
-        node.setPaddingPercent(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_padding_percent_all) {
-        node.setPaddingPercent(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_position_left) {
         node.setPosition(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_position_top) {
+      } else if (attribute == R.styleable.yoga_yg_positionTop) {
         node.setPosition(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_position_right) {
+      } else if (attribute == R.styleable.yoga_yg_positionRight) {
         node.setPosition(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_position_bottom) {
+      } else if (attribute == R.styleable.yoga_yg_positionBottom) {
         node.setPosition(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_position_start) {
+      } else if (attribute == R.styleable.yoga_yg_positionStart) {
         node.setPosition(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_position_end) {
+      } else if (attribute == R.styleable.yoga_yg_positionEnd) {
         node.setPosition(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_position_horizontal) {
+      } else if (attribute == R.styleable.yoga_yg_positionHorizontal) {
         node.setPosition(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_position_vertical) {
+      } else if (attribute == R.styleable.yoga_yg_positionVertical) {
         node.setPosition(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_position_all) {
+      } else if (attribute == R.styleable.yoga_yg_positionAll) {
         node.setPosition(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_position_percent_left) {
+      } else if (attribute == R.styleable.yoga_yg_positionType) {
-        node.setPositionPercent(YogaEdge.LEFT, value);
-      } else if (attribute == R.styleable.yoga_position_percent_top) {
-        node.setPositionPercent(YogaEdge.TOP, value);
-      } else if (attribute == R.styleable.yoga_position_percent_right) {
-        node.setPositionPercent(YogaEdge.RIGHT, value);
-      } else if (attribute == R.styleable.yoga_position_percent_bottom) {
-        node.setPositionPercent(YogaEdge.BOTTOM, value);
-      } else if (attribute == R.styleable.yoga_position_percent_start) {
-        node.setPositionPercent(YogaEdge.START, value);
-      } else if (attribute == R.styleable.yoga_position_percent_end) {
-        node.setPositionPercent(YogaEdge.END, value);
-      } else if (attribute == R.styleable.yoga_position_percent_horizontal) {
-        node.setPositionPercent(YogaEdge.HORIZONTAL, value);
-      } else if (attribute == R.styleable.yoga_position_percent_vertical) {
-        node.setPositionPercent(YogaEdge.VERTICAL, value);
-      } else if (attribute == R.styleable.yoga_position_percent_all) {
-        node.setPositionPercent(YogaEdge.ALL, value);
-      } else if (attribute == R.styleable.yoga_position_type) {
         node.setPositionType(YogaPositionType.fromInt(Math.round(value)));
-      } else if (attribute == R.styleable.yoga_width) {
+      } else if (attribute == R.styleable.yoga_yg_width) {
         node.setWidth(value);
-      } else if (attribute == R.styleable.yoga_width_percent) {
+      } else if (attribute == R.styleable.yoga_yg_wrap) {
-        node.setWidthPercent(value);
-      } else if (attribute == R.styleable.yoga_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
@@ -594,18 +650,25 @@ public class YogaLayout extends ViewGroup {
    *
    * <p>
    * This is actually mostly a wrapper around a {@code SparseArray} that holds a mapping between
-   * styleable id's ({@code R.styleable.yoga_*}) and the float of their values.  In cases where the
+   * styleable id's ({@code R.styleable.yoga_yg_*}) and the float of their values.  In cases where
-   * value is an enum or an integer, they should first be cast to int (with rounding) before using.
+   * 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_*}) to the float of their values.
+     * 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> attributes;
+    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
@@ -617,16 +680,18 @@ public class YogaLayout extends ViewGroup {
     public LayoutParams(ViewGroup.LayoutParams source) {
       super(source);
       if (source instanceof LayoutParams) {
-        attributes = ((LayoutParams) source).attributes.clone();
+        numericAttributes = ((LayoutParams) source).numericAttributes.clone();
+        stringAttributes = ((LayoutParams) source).stringAttributes.clone();
       } else {
-        attributes = new SparseArray<>();
+        numericAttributes = new SparseArray<>();
+        stringAttributes = new SparseArray<>();
 
         // Negative values include MATCH_PARENT and WRAP_CONTENT
         if (source.width >= 0) {
-          attributes.put(R.styleable.yoga_width, (float) width);
+          numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
         }
         if (source.height >= 0) {
-          attributes.put(R.styleable.yoga_height, (float) height);
+          numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
         }
       }
     }
@@ -634,7 +699,7 @@ public class YogaLayout extends ViewGroup {
     /**
      * 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_parent} or {@code wrap_content} are given, then the parent
+     * 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})
      *
@@ -645,13 +710,14 @@ public class YogaLayout extends ViewGroup {
      */
     public LayoutParams(int width, int height) {
       super(width, height);
-      attributes = new SparseArray<>();
+      numericAttributes = new SparseArray<>();
+      stringAttributes = new SparseArray<>();
       // Negative values include MATCH_PARENT and WRAP_CONTENT
       if (width >= 0) {
-        attributes.put(R.styleable.yoga_width, (float) width);
+        numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
       }
       if (height >= 0) {
-        attributes.put(R.styleable.yoga_height, (float) height);
+        numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
       }
     }
 
@@ -664,15 +730,16 @@ public class YogaLayout extends ViewGroup {
      */
     public LayoutParams(Context context, AttributeSet attrs) {
       super(context, attrs);
-      attributes = new SparseArray<>();
+      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) {
-        attributes.put(R.styleable.yoga_width, (float) width);
+        numericAttributes.put(R.styleable.yoga_yg_width, (float) width);
       }
       if (height >= 0) {
-        attributes.put(R.styleable.yoga_height, (float) height);
+        numericAttributes.put(R.styleable.yoga_yg_height, (float) height);
       }
 
       final int attributeCount = a.getIndexCount();
@@ -682,11 +749,13 @@ public class YogaLayout extends ViewGroup {
         a.getValue(attribute, val);
 
         if (val.type == TypedValue.TYPE_DIMENSION) {
-          attributes.put(
+          numericAttributes.put(
               attribute,
               (float) a.getDimensionPixelSize(attribute, 0));
+        } else if (val.type == TypedValue.TYPE_STRING) {
+          stringAttributes.put(attribute, a.getString(attribute));
         } else {
-          attributes.put(attribute, a.getFloat(attribute, 0));
+          numericAttributes.put(attribute, a.getFloat(attribute, 0));
         }
       }
       a.recycle();
@@ -704,14 +773,14 @@ public class YogaLayout extends ViewGroup {
      * {@code View}'s measure function.
      *
      * @param node The yoga node to measure
-     * @param width The suggested width from the parent
+     * @param width The suggested width from the owner
      * @param widthMode The type of suggestion for the width
-     * @param height The suggested height from the parent
+     * @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(
-        YogaNodeAPI node,
+        YogaNode node,
         float width,
         YogaMeasureMode widthMode,
         float height,

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

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 package com.facebook.yoga.android;

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

@@ -2,17 +2,15 @@
 
 <!--
   Copyright (c) 2014-present, Facebook, Inc.
-  All rights reserved.
   
-  This source code is licensed under the BSD-style license found in the
+  This source code is licensed under the MIT license found in the
-  LICENSE file in the root directory of this source tree. An additional grant
+  LICENSE file in the root directory of this source tree.
-  of patent rights can be found in the PATENTS file in the same directory.
 -->
 
 <resources>
   <declare-styleable name="yoga">
 
-    <attr name="align_content" format="enum">
+    <attr name="yg_alignContent" format="enum">
       <enum name="auto" value="0"/>
       <enum name="flex_start" value="1"/>
       <enum name="center" value="2"/>
@@ -21,7 +19,7 @@
       <enum name="baseline" value="5"/>
     </attr>
 
-    <attr name="align_items" format="enum">
+    <attr name="yg_alignItems" format="enum">
       <enum name="auto" value="0"/>
       <enum name="flex_start" value="1"/>
       <enum name="center" value="2"/>
@@ -30,7 +28,7 @@
       <enum name="baseline" value="5"/>
     </attr>
 
-    <attr name="align_self" format="enum">
+    <attr name="yg_alignSelf" format="enum">
       <enum name="auto" value="0"/>
       <enum name="flex_start" value="1"/>
       <enum name="center" value="2"/>
@@ -39,46 +37,47 @@
       <enum name="baseline" value="5"/>
     </attr>
 
-    <attr name="aspect_ratio" format="float"/>
+    <attr name="yg_aspectRatio" format="float"/>
 
-    <attr name="border_left" format="dimension"/>
+    <attr name="yg_borderLeft" format="dimension"/>
-    <attr name="border_top" format="dimension"/>
+    <attr name="yg_borderTop" format="dimension"/>
-    <attr name="border_right" format="dimension"/>
+    <attr name="yg_borderRight" format="dimension"/>
-    <attr name="border_bottom" format="dimension"/>
+    <attr name="yg_borderBottom" format="dimension"/>
-    <attr name="border_start" format="dimension"/>
+    <attr name="yg_borderStart" format="dimension"/>
-    <attr name="border_end" format="dimension"/>
+    <attr name="yg_borderEnd" format="dimension"/>
-    <attr name="border_horizontal" format="dimension"/>
+    <attr name="yg_borderHorizontal" format="dimension"/>
-    <attr name="border_vertical" format="dimension"/>
+    <attr name="yg_borderVertical" format="dimension"/>
-    <attr name="border_all" format="dimension"/>
+    <attr name="yg_borderAll" format="dimension"/>
 
-    <attr name="direction" format="enum">
+    <attr name="yg_direction" format="enum">
       <enum name="inherit" value="0"/>
       <enum name="ltr" value="1"/>
       <enum name="rtl" value="2"/>
     </attr>
 
-    <attr name="flex" format="float"/>
+    <attr name="yg_display" format="enum">
+      <enum name="flex" value="0"/>
+      <enum name="none" value="1"/>
+    </attr>
 
-    <attr name="flex_basis" format="float"/>
+    <attr name="yg_flex" format="float"/>
 
-    <attr name="flex_basis_percent" format="float"/>
+    <attr name="yg_flexBasis" format="float|string"/>
 
-    <attr name="flex_direction" format="enum">
+    <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="flex_grow" format="float"/>
+    <attr name="yg_flexGrow" format="float"/>
 
-    <attr name="flex_shrink" format="float"/>
+    <attr name="yg_flexShrink" format="float"/>
 
-    <attr name="height" format="dimension"/>
+    <attr name="yg_height" format="dimension|string"/>
 
-    <attr name="height_percent" format="float"/>
+    <attr name="yg_justifyContent" format="enum">
-
-    <attr name="justify_content" format="enum">
       <enum name="flex_start" value="0"/>
       <enum name="center" value="1"/>
       <enum name="flex_end" value="2"/>
@@ -86,98 +85,58 @@
       <enum name="space_around" value="4"/>
     </attr>
 
-    <attr name="margin_left" format="dimension"/>
+    <attr name="yg_marginLeft" format="dimension|string"/>
-    <attr name="margin_top" format="dimension"/>
+    <attr name="yg_marginTop" format="dimension|string"/>
-    <attr name="margin_right" format="dimension"/>
+    <attr name="yg_marginRight" format="dimension|string"/>
-    <attr name="margin_bottom" format="dimension"/>
+    <attr name="yg_marginBottom" format="dimension|string"/>
-    <attr name="margin_start" format="dimension"/>
+    <attr name="yg_marginStart" format="dimension|string"/>
-    <attr name="margin_end" format="dimension"/>
+    <attr name="yg_marginEnd" format="dimension|string"/>
-    <attr name="margin_horizontal" format="dimension"/>
+    <attr name="yg_marginHorizontal" format="dimension|string"/>
-    <attr name="margin_vertical" format="dimension"/>
+    <attr name="yg_marginVertical" format="dimension|string"/>
-    <attr name="margin_all" format="dimension"/>
+    <attr name="yg_marginAll" format="dimension|string"/>
 
-    <attr name="margin_percent_left" format="dimension"/>
+    <attr name="yg_maxHeight" format="dimension|string"/>
-    <attr name="margin_percent_top" format="dimension"/>
-    <attr name="margin_percent_right" format="dimension"/>
-    <attr name="margin_percent_bottom" format="dimension"/>
-    <attr name="margin_percent_start" format="dimension"/>
-    <attr name="margin_percent_end" format="dimension"/>
-    <attr name="margin_percent_horizontal" format="dimension"/>
-    <attr name="margin_percent_vertical" format="dimension"/>
-    <attr name="margin_percent_all" format="dimension"/>
 
-    <attr name="max_height" format="dimension"/>
+    <attr name="yg_maxWidth" format="dimension|string"/>
 
-    <attr name="max_height_percent" format="float"/>
+    <attr name="yg_minHeight" format="dimension|string"/>
 
-    <attr name="max_width" format="dimension"/>
+    <attr name="yg_minWidth" format="dimension|string"/>
 
-    <attr name="max_width_percent" format="float"/>
+    <attr name="yg_overflow" format="enum">
-
-    <attr name="min_height" format="dimension"/>
-
-    <attr name="min_height_percent" format="float"/>
-
-    <attr name="min_width" format="dimension"/>
-
-    <attr name="min_width_percent" format="float"/>
-
-    <attr name="overflow" format="enum">
       <enum name="visible" value="0"/>
       <enum name="hidden" value="1"/>
       <enum name="scroll" value="2"/>
     </attr>
 
-    <attr name="padding_left" format="dimension"/>
+    <attr name="yg_paddingLeft" format="dimension|string"/>
-    <attr name="padding_top" format="dimension"/>
+    <attr name="yg_paddingTop" format="dimension|string"/>
-    <attr name="padding_right" format="dimension"/>
+    <attr name="yg_paddingRight" format="dimension|string"/>
-    <attr name="padding_bottom" format="dimension"/>
+    <attr name="yg_paddingBottom" format="dimension|string"/>
-    <attr name="padding_start" format="dimension"/>
+    <attr name="yg_paddingStart" format="dimension|string"/>
-    <attr name="padding_end" format="dimension"/>
+    <attr name="yg_paddingEnd" format="dimension|string"/>
-    <attr name="padding_horizontal" format="dimension"/>
+    <attr name="yg_paddingHorizontal" format="dimension|string"/>
-    <attr name="padding_vertical" format="dimension"/>
+    <attr name="yg_paddingVertical" format="dimension|string"/>
-    <attr name="padding_all" format="dimension"/>
+    <attr name="yg_paddingAll" format="dimension|string"/>
 
-    <attr name="padding_percent_left" format="float"/>
+    <attr name="yg_positionLeft" format="dimension|string"/>
-    <attr name="padding_percent_top" format="float"/>
+    <attr name="yg_positionTop" format="dimension|string"/>
-    <attr name="padding_percent_right" format="float"/>
+    <attr name="yg_positionRight" format="dimension|string"/>
-    <attr name="padding_percent_bottom" format="float"/>
+    <attr name="yg_positionBottom" format="dimension|string"/>
-    <attr name="padding_percent_start" format="float"/>
+    <attr name="yg_positionStart" format="dimension|string"/>
-    <attr name="padding_percent_end" format="float"/>
+    <attr name="yg_positionEnd" format="dimension|string"/>
-    <attr name="padding_percent_horizontal" format="float"/>
+    <attr name="yg_positionHorizontal" format="dimension|string"/>
-    <attr name="padding_percent_vertical" format="float"/>
+    <attr name="yg_positionVertical" format="dimension|string"/>
-    <attr name="padding_percent_all" format="float"/>
+    <attr name="yg_positionAll" format="dimension|string"/>
 
-    <attr name="position_left" format="dimension"/>
+    <attr name="yg_positionType" format="enum">
-    <attr name="position_top" format="dimension"/>
-    <attr name="position_right" format="dimension"/>
-    <attr name="position_bottom" format="dimension"/>
-    <attr name="position_start" format="dimension"/>
-    <attr name="position_end" format="dimension"/>
-    <attr name="position_horizontal" format="dimension"/>
-    <attr name="position_vertical" format="dimension"/>
-    <attr name="position_all" format="dimension"/>
-
-    <attr name="position_percent_left" format="float"/>
-    <attr name="position_percent_top" format="float"/>
-    <attr name="position_percent_right" format="float"/>
-    <attr name="position_percent_bottom" format="float"/>
-    <attr name="position_percent_start" format="float"/>
-    <attr name="position_percent_end" format="float"/>
-    <attr name="position_percent_horizontal" format="float"/>
-    <attr name="position_percent_vertical" format="float"/>
-    <attr name="position_percent_all" format="float"/>
-
-    <attr name="position_type" format="enum">
       <enum name="relative" value="0"/>
       <enum name="absolute" value="1"/>
     </attr>
 
-    <attr name="width" format="dimension"/>
+    <attr name="yg_width" format="dimension|string"/>
 
-    <attr name="width_percent" format="float"/>
+    <attr name="yg_wrap" format="enum">
-
-    <attr name="wrap" format="enum">
       <enum name="no_wrap" value="0"/>
       <enum name="wrap" value="1"/>
     </attr>

benchmark/BUCK

@@ -1,27 +1,25 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "yoga_dep")
 
 cxx_binary(
-  name = 'benchmark',
+    name = "benchmark",
-  srcs = glob(['*.c']),
+    srcs = glob(["*.c"]),
-  headers = subdir_glob([('', '*.h')]),
+    headers = subdir_glob([("", "*.h")]),
-  header_namespace = '',
+    header_namespace = "",
-  compiler_flags = [
+    compiler_flags = [
-    '-fno-omit-frame-pointer',
+        "-fno-omit-frame-pointer",
-    '-fexceptions',
+        "-fexceptions",
-    '-Wall',
+        "-Wall",
-    '-Werror',
+        "-Werror",
-    '-O3',
+        "-O3",
-    '-std=c11',
+        "-std=c11",
-  ],
+    ],
-  deps = [
+    visibility = ["PUBLIC"],
-    yoga_dep(':yoga'),
+    deps = [
-  ],
+        yoga_dep(":yoga"),
-  visibility = ['PUBLIC'],
+    ],
 )

benchmark/YGBenchmark.c

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #include "YGBenchmark.h"

benchmark/YGBenchmark.h

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 #pragma once

build.gradle

@@ -3,12 +3,12 @@
 buildscript {
     repositories {
         jcenter()
+        maven { url 'https://maven.google.com/' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.android.tools.build:gradle:3.0.0'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
-        classpath 'com.nabilhachicha:android-native-dependencies:0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -17,15 +17,46 @@ buildscript {
 
 allprojects {
   repositories {
-    flatDir {
+    jcenter()
-      dirs "${rootDir}/lib/jsr-305"
-      dirs "${rootDir}/lib/soloader"
-      dirs "${rootDir}/lib/appcompat"
-      dirs "${rootDir}/lib/android-support"
-    }
   }
 }
 
+ext {
+    minSdkVersion = 14
+    targetSdkVersion = 25
+    compileSdkVersion = 26
+    buildToolsVersion = '26.0.2'
+    sourceCompatibilityVersion = JavaVersion.VERSION_1_7
+    targetCompatibilityVersion = JavaVersion.VERSION_1_7
+}
+
+// If you have an idea on how to avoid this, please get in touch or
+// answer https://stackoverflow.com/questions/43867014/how-to-use-the-gradle-ndk-build-to-compile-for-the-host-machine.
+task copyNativeLibs(type: Copy, dependsOn: ':buckBuildNative') {
+    from "${rootDir}/buck-out/gen/java/tests#default,shared-library-symlink-tree/"
+    include '*.so'
+    include '*.dylib'
+    into "$buildDir/jniLibs"
+}
+
+task buckBuildNative(type: Exec) {
+    workingDir rootDir
+    environment BUCKVERSION: 'last'
+    commandLine 'buck', 'build', '//java/...'
+}
+
+allprojects {
+    afterEvaluate {
+        tasks.withType(Test) {
+            dependsOn copyNativeLibs
+            def libDir = "${rootDir}/build/jniLibs"
+            systemProperty 'java.library.path', libDir
+            environment 'LD_LIBRARY_PATH', libDir
+            environment 'DYLD_LIBRARY_PATH', libDir
+        }
+    }
+}
+
 task clean(type: Delete) {
     delete rootProject.buildDir
 }

csharp/.gitignore

@@ -267,3 +267,6 @@ paket-files/
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
 *.pyc
+
+# local buck build
+lib/

csharp/.hgignore

@@ -267,3 +267,6 @@ paket-files/
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
 *.pyc
+
+# local buck build
+lib/

csharp/Android/Facebook.Yoga.Android.Tests/MainActivity.cs

@@ -1,9 +1,8 @@
 /**
- * Copyright 2014-present, Facebook, Inc.
+ * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE-examples file in the root directory of this source tree.
+ * LICENSE file in the root directory of this source tree.
  */
 
 using System.Reflection;

csharp/Android/Facebook.Yoga.Android/CustomBuildAction.targets

@@ -4,17 +4,17 @@
         <BuildDependsOn>NativeLibraryARMV7;NativeLibraryX86;$(BuildDependsOn)</BuildDependsOn>
     </PropertyGroup>
     <Target Name="NativeLibraryARMV7" Outputs="$(ProjectDir)/lib/armeabi-v7a/libyoga.so">
-        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../Mac/buck-build.sh //csharp:yoganet#android-armv7,shared" />
+        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../build-native.sh" />
         <Copy SourceFiles="$(ProjectDir)../../../buck-out/gen/csharp/yoganet#android-armv7,shared/libyoga.so" DestinationFiles="$(ProjectDir)/lib/armeabi-v7a/libyoga.so" SkipUnchangedFiles="true" />
     </Target>
     <!--
     <Target Name="NativeLibraryARM64" Outputs="$(ProjectDir)/lib/arm64-v8a/libyoga.so">
-        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../Mac/buck-build.sh //csharp:yoganet#android-arm64,shared" />
+        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../build-native.sh" />
         <Copy SourceFiles="$(ProjectDir)../../../buck-out/gen/csharp/yoganet#android-arm64,shared/libyoga.so" DestinationFiles="$(ProjectDir)/lib/arm64-v8/libyoga.so" SkipUnchangedFiles="true" />
     </Target>
     -->
     <Target Name="NativeLibraryX86" Outputs="$(ProjectDir)/lib/x86/libyoga.so">
-        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../Mac/buck-build.sh //csharp:yoganet#android-x86,shared" />
+        <Exec WorkingDirectory="$(ProjectDir)" Command="$(ProjectDir)../../build-native.sh" />
         <Copy SourceFiles="$(ProjectDir)../../../buck-out/gen/csharp/yoganet#android-x86,shared/libyoga.so" DestinationFiles="$(ProjectDir)/lib/x86/libyoga.so" SkipUnchangedFiles="true" />
     </Target>
 </Project>

csharp/BUCK

@@ -1,43 +1,41 @@
 # Copyright (c) 2014-present, Facebook, Inc.
-# All rights reserved.
 #
-# This source code is licensed under the BSD-style license found in the
+# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree. An additional grant
+# LICENSE file in the root directory of this source tree.
-# of patent rights can be found in the PATENTS file in the same directory.
 
-include_defs('//YOGA_DEFS')
+load("//:yoga_defs.bzl", "BASE_COMPILER_FLAGS", "yoga_dep", "cxx_library", "is_apple_platform")
 
-COMPILER_FLAGS = BASE_COMPILER_FLAGS + ['-std=c++11']
+COMPILER_FLAGS = BASE_COMPILER_FLAGS + ["-std=c++11"]
 
 csharp_library(
-  name = 'yogalibnet46',
+    name = "yogalibnet46",
-  dll_name = 'Facebook.Yoga.dll',
+    srcs = glob(["**/*.cs"]),
-  framework_ver = 'net46',
+    dll_name = "Facebook.Yoga.dll",
-  srcs = glob(['**/*.cs']),
+    framework_ver = "net46",
 )
 
 csharp_library(
-  name = 'yogalibnet45',
+    name = "yogalibnet45",
-  dll_name = 'Facebook.Yoga.dll',
+    srcs = glob(["**/*.cs"]),
-  framework_ver = 'net45',
+    dll_name = "Facebook.Yoga.dll",
-  srcs = glob(['**/*.cs']),
+    framework_ver = "net45",
 )
 
 cxx_library(
-  name = 'yoganet',
+    name = "yoganet",
-  soname = 'libyoga.$(ext)',
+    srcs = glob(["Yoga/YGInterop.cpp"]),
-  srcs = glob(['Yoga/YGInterop.cpp']),
+    compiler_flags = COMPILER_FLAGS,
-  compiler_flags = COMPILER_FLAGS,
+    link_style = "static",
-  link_style = 'static',
+    link_whole = True,
-  link_whole = True,
+    soname = "libyoga.$(ext)",
-  deps = [yoga_dep(':yoga')],
+    visibility = ["PUBLIC"],
-  visibility = ['PUBLIC'],
+    deps = [yoga_dep(":yoga")],
 )
 
-if isdir('/Applications/Xcode.app'):
+if is_apple_platform():
   yoganet_ios_srcs = []
   for arch in [
-    'iphonesimulator-x86_64', 'iphonesimulator-i386', 'iphoneos-arm64', 'iphoneos-armv7'
+    'iphonesimulator-x86_64', 'iphoneos-arm64'
   ]:
     name = 'yoganet-' + arch
     yoganet_ios_srcs.append(':' + name)
@@ -65,8 +63,7 @@ if isdir('/Applications/Xcode.app'):
   genrule(
     name = 'yoganet-macosx',
     srcs = [
-      yoga_dep(yoganet_macosx_target % 'x86_64'),
+      yoga_dep(yoganet_macosx_target % 'x86_64')
-      yoga_dep(yoganet_macosx_target % 'i386'),
     ],
     out = 'libyoga.dylib',
     cmd = 'lipo $SRCS -create -output $OUT',

csharp/Facebook.Yoga/BaselineFunction.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/Facebook.Yoga.Shared.projitems

@@ -10,11 +10,15 @@
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)BaselineFunction.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Logger.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)MeasureFunction.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)MeasureOutput.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Native.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)YGConfigHandle.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)YGNodeHandle.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)YogaAlign.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)YogaBaselineFunc.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)YogaConfig.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)YogaConstants.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)YogaDimension.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)YogaDirection.cs" />

csharp/Facebook.Yoga/Logger.cs

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+namespace Facebook.Yoga
+{
+    public delegate void Logger(
+        YogaConfig config,
+        YogaNode node,
+        YogaLogLevel level,
+        string message);
+}

csharp/Facebook.Yoga/MeasureFunction.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/MeasureOutput.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/Native.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 using System;
@@ -12,6 +10,12 @@ using System.Runtime.InteropServices;
 
 namespace Facebook.Yoga
 {
+#if WINDOWS_UWP_ARM
+    using YogaValueType = IntPtr;
+#else
+    using YogaValueType = YogaValue;
+#endif
+
     internal static class Native
     {
 #if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
@@ -20,86 +24,61 @@ namespace Facebook.Yoga
         private const string DllName = "yoga";
 #endif
 
-        internal class YGNodeHandle : SafeHandle
-        {
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-            private GCHandle _managed;
-#endif
-
-            private YGNodeHandle() : base(IntPtr.Zero, true)
-            {
-            }
-
-            public override bool IsInvalid
-            {
-                get
-                {
-                    return this.handle == IntPtr.Zero;
-                }
-            }
-
-            protected override bool ReleaseHandle()
-            {
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-                if (_managed.IsAllocated)
-                {
-                    _managed.Free();
-                }
-#endif
-                Native.YGNodeFree(this.handle);
-                GC.KeepAlive(this);
-                return true;
-            }
-
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-            public void SetContext(YogaNode node)
-            {
-                if (!_managed.IsAllocated)
-                {
-                    _managed = GCHandle.Alloc(node, GCHandleType.Weak);
-                    Native.YGNodeSetContext(this.handle, GCHandle.ToIntPtr(_managed));
-                }
-            }
-
-            public static YogaNode GetManaged(IntPtr ygNodePtr)
-            {
-                var node =
-                    GCHandle.FromIntPtr(Native.YGNodeGetContext(ygNodePtr)).Target as YogaNode;
-                if (node == null)
-                {
-                    throw new InvalidOperationException("YogaNode is already deallocated");
-                }
-
-                return node;
-            }
-#endif
-        }
-
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGInteropSetLogger(
-            [MarshalAs(UnmanagedType.FunctionPtr)] YogaLogger.Func func);
+            [MarshalAs(UnmanagedType.FunctionPtr)] YogaLogger logger);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern YGNodeHandle YGNodeNew();
 
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern YGNodeHandle YGNodeNewWithConfig(YGConfigHandle config);
+
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeFree(IntPtr node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeReset(YGNodeHandle node);
 
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern YGConfigHandle YGConfigGetDefault();
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern YGConfigHandle YGConfigNew();
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern void YGConfigFree(IntPtr node);
+
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern int YGNodeGetInstanceCount();
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern void YGSetExperimentalFeatureEnabled(
+        public static extern int YGConfigGetInstanceCount();
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern void YGConfigSetExperimentalFeatureEnabled(
+            YGConfigHandle config,
             YogaExperimentalFeature feature,
             bool enabled);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern bool YGIsExperimentalFeatureEnabled(
+        public static extern bool YGConfigIsExperimentalFeatureEnabled(
+            YGConfigHandle config,
             YogaExperimentalFeature feature);
 
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern void YGConfigSetUseWebDefaults(
+            YGConfigHandle config,
+            bool useWebDefaults);
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern bool YGConfigGetUseWebDefaults(YGConfigHandle config);
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern void YGConfigSetPointScaleFactor(
+            YGConfigHandle config,
+            float pixelsInPoint);
+
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeInsertChild(
             YGNodeHandle node,
@@ -129,7 +108,7 @@ namespace Facebook.Yoga
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeCopyStyle(YGNodeHandle dstNode, YGNodeHandle srcNode);
 
-        #region YG_NODE_PROPERTY
+#region YG_NODE_PROPERTY
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeSetMeasureFunc(
@@ -150,9 +129,9 @@ namespace Facebook.Yoga
         [return: MarshalAs(UnmanagedType.I1)]
         public static extern bool YGNodeGetHasNewLayout(YGNodeHandle node);
 
-        #endregion
+#endregion
 
-        #region YG_NODE_STYLE_PROPERTY
+#region YG_NODE_STYLE_PROPERTY
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetDirection(YGNodeHandle node, YogaDirection direction);
@@ -239,7 +218,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetFlexBasisAuto(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetFlexBasis(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetFlexBasis(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetWidth(YGNodeHandle node, float width);
@@ -251,7 +230,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetWidthAuto(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetWidth(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetWidth(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetHeight(YGNodeHandle node, float height);
@@ -263,7 +242,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetHeightAuto(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetHeight(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetHeight(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetMinWidth(YGNodeHandle node, float minWidth);
@@ -272,7 +251,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetMinWidthPercent(YGNodeHandle node, float minWidth);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetMinWidth(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetMinWidth(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetMinHeight(YGNodeHandle node, float minHeight);
@@ -281,7 +260,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetMinHeightPercent(YGNodeHandle node, float minHeight);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetMinHeight(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetMinHeight(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetMaxWidth(YGNodeHandle node, float maxWidth);
@@ -290,7 +269,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetMaxWidthPercent(YGNodeHandle node, float maxWidth);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetMaxWidth(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetMaxWidth(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetMaxHeight(YGNodeHandle node, float maxHeight);
@@ -299,7 +278,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetMaxHeightPercent(YGNodeHandle node, float maxHeight);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetMaxHeight(YGNodeHandle node);
+        public static extern YogaValueType YGNodeStyleGetMaxHeight(YGNodeHandle node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetAspectRatio(YGNodeHandle node, float aspectRatio);
@@ -307,9 +286,9 @@ namespace Facebook.Yoga
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern float YGNodeStyleGetAspectRatio(YGNodeHandle node);
 
-        #endregion
+#endregion
 
-        #region YG_NODE_STYLE_EDGE_PROPERTY
+#region YG_NODE_STYLE_EDGE_PROPERTY
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetPosition(YGNodeHandle node, YogaEdge edge, float position);
@@ -318,7 +297,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetPositionPercent(YGNodeHandle node, YogaEdge edge, float position);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetPosition(YGNodeHandle node, YogaEdge edge);
+        public static extern YogaValueType YGNodeStyleGetPosition(YGNodeHandle node, YogaEdge edge);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetMargin(YGNodeHandle node, YogaEdge edge, float margin);
@@ -330,7 +309,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetMarginAuto(YGNodeHandle node, YogaEdge edge);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetMargin(YGNodeHandle node, YogaEdge edge);
+        public static extern YogaValueType YGNodeStyleGetMargin(YGNodeHandle node, YogaEdge edge);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetPadding(YGNodeHandle node, YogaEdge edge, float padding);
@@ -339,7 +318,7 @@ namespace Facebook.Yoga
         public static extern void YGNodeStyleSetPaddingPercent(YGNodeHandle node, YogaEdge edge, float padding);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
-        public static extern YogaValue YGNodeStyleGetPadding(YGNodeHandle node, YogaEdge edge);
+        public static extern YogaValueType YGNodeStyleGetPadding(YGNodeHandle node, YogaEdge edge);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeStyleSetBorder(YGNodeHandle node, YogaEdge edge, float border);
@@ -347,9 +326,9 @@ namespace Facebook.Yoga
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern float YGNodeStyleGetBorder(YGNodeHandle node, YogaEdge edge);
 
-        #endregion
+#endregion
 
-        #region YG_NODE_LAYOUT_PROPERTY
+#region YG_NODE_LAYOUT_PROPERTY
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern float YGNodeLayoutGetLeft(YGNodeHandle node);
@@ -378,18 +357,22 @@ namespace Facebook.Yoga
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern YogaDirection YGNodeLayoutGetDirection(YGNodeHandle node);
 
-        #endregion
+#endregion
 
-        #region IOS
+#region Context
 
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern IntPtr YGNodeGetContext(IntPtr node);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodeSetContext(IntPtr node, IntPtr managed);
-#endif
 
-        #endregion
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern IntPtr YGConfigGetContext(IntPtr config);
+
+        [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
+        public static extern void YGConfigSetContext(IntPtr config, IntPtr managed);
+
+#endregion
     }
 }

csharp/Facebook.Yoga/YGConfigHandle.cs

@@ -0,0 +1,82 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Facebook.Yoga
+{
+    internal class YGConfigHandle : SafeHandle
+    {
+        internal static readonly YGConfigHandle Default = Native.YGConfigGetDefault();
+        private GCHandle _managedConfigHandle;
+
+        private YGConfigHandle() : base(IntPtr.Zero, true)
+        {
+        }
+
+        public override bool IsInvalid
+        {
+            get
+            {
+                return this.handle == IntPtr.Zero;
+            }
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            if (this.handle != Default.handle)
+            {
+                ReleaseManaged();
+                if (!IsInvalid)
+                {
+                    Native.YGConfigFree(this.handle);
+                }
+            }
+            GC.KeepAlive(this);
+            return true;
+        }
+
+        public void SetContext(YogaConfig config)
+        {
+            if (!_managedConfigHandle.IsAllocated)
+            {
+#if UNITY_5_4_OR_NEWER
+                // Weak causes 'GCHandle value belongs to a different domain' error
+                _managedConfigHandle = GCHandle.Alloc(config);
+#else
+                _managedConfigHandle = GCHandle.Alloc(config, GCHandleType.Weak);
+#endif
+                var managedConfigPtr = GCHandle.ToIntPtr(_managedConfigHandle);
+                Native.YGConfigSetContext(this.handle, managedConfigPtr);
+            }
+        }
+
+        private void ReleaseManaged()
+        {
+            if (_managedConfigHandle.IsAllocated)
+            {
+                _managedConfigHandle.Free();
+            }
+        }
+
+        public static YogaConfig GetManaged(IntPtr unmanagedConfigPtr)
+        {
+            if (unmanagedConfigPtr != IntPtr.Zero)
+            {
+                var managedConfigPtr = Native.YGConfigGetContext(unmanagedConfigPtr);
+                var config = GCHandle.FromIntPtr(managedConfigPtr).Target as YogaConfig;
+                if (config == null)
+                {
+                    throw new InvalidOperationException("YogaConfig is already deallocated");
+                }
+                return config;
+            }
+            return null;
+        }
+    }
+}

csharp/Facebook.Yoga/YGNodeHandle.cs

@@ -0,0 +1,78 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Facebook.Yoga
+{
+    internal class YGNodeHandle : SafeHandle
+    {
+        private GCHandle _managedNodeHandle;
+
+        private YGNodeHandle() : base(IntPtr.Zero, true)
+        {
+        }
+
+        public override bool IsInvalid
+        {
+            get
+            {
+                return this.handle == IntPtr.Zero;
+            }
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            ReleaseManaged();
+            if (!IsInvalid)
+            {
+                Native.YGNodeFree(this.handle);
+                GC.KeepAlive(this);
+            }
+            return true;
+        }
+
+        public void SetContext(YogaNode node)
+        {
+            if (!_managedNodeHandle.IsAllocated)
+            {
+#if UNITY_5_4_OR_NEWER
+                // Weak causes 'GCHandle value belongs to a different domain' error
+                _managedNodeHandle = GCHandle.Alloc(node);
+#else
+                _managedNodeHandle = GCHandle.Alloc(node, GCHandleType.Weak);
+#endif
+                var managedNodePtr = GCHandle.ToIntPtr(_managedNodeHandle);
+                Native.YGNodeSetContext(this.handle, managedNodePtr);
+            }
+        }
+
+        public void ReleaseManaged()
+        {
+            if (_managedNodeHandle.IsAllocated)
+            {
+                _managedNodeHandle.Free();
+            }
+        }
+
+        public static YogaNode GetManaged(IntPtr unmanagedNodePtr)
+        {
+            if (unmanagedNodePtr != IntPtr.Zero)
+            {
+                var managedNodePtr = Native.YGNodeGetContext(unmanagedNodePtr);
+                var node = GCHandle.FromIntPtr(managedNodePtr).Target as YogaNode;
+                if (node == null)
+                {
+                    throw new InvalidOperationException("YogaNode is already deallocated");
+                }
+                return node;
+            }
+            return null;
+        }
+    }
+}

csharp/Facebook.Yoga/YogaAlign.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaBaselineFunc.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 using System;
@@ -13,5 +11,5 @@ using System.Runtime.InteropServices;
 namespace Facebook.Yoga
 {
     [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-    public delegate float YogaBaselineFunc(IntPtr node, float width, float height);
+    public delegate float YogaBaselineFunc(IntPtr unmanagedNodePtr, float width, float height);
 }

csharp/Facebook.Yoga/YogaConfig.cs

@@ -0,0 +1,138 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+#if __IOS__
+using ObjCRuntime;
+#endif
+#if ENABLE_IL2CPP
+using AOT;
+#endif
+
+namespace Facebook.Yoga
+{
+    public class YogaConfig
+    {
+        internal static readonly YogaConfig Default = new YogaConfig(YGConfigHandle.Default);
+        private static YogaLogger _managedLogger;
+
+        private YGConfigHandle _ygConfig;
+        private Logger _logger;
+
+        private YogaConfig(YGConfigHandle ygConfig)
+        {
+            _ygConfig = ygConfig;
+            if (_ygConfig.IsInvalid)
+            {
+                throw new InvalidOperationException("Failed to allocate native memory");
+            }
+
+            _ygConfig.SetContext(this);
+
+            if (_ygConfig == YGConfigHandle.Default)
+            {
+                _managedLogger = LoggerInternal;
+                Native.YGInteropSetLogger(_managedLogger);
+            }
+        }
+
+        public YogaConfig()
+            : this(Native.YGConfigNew())
+        {
+        }
+
+        internal YGConfigHandle Handle
+        {
+            get {
+                return _ygConfig;
+            }
+        }
+
+#if (UNITY_IOS && !UNITY_EDITOR) || ENABLE_IL2CPP || __IOS__
+        [MonoPInvokeCallback(typeof(YogaLogger))]
+#endif
+        private static void LoggerInternal(
+            IntPtr unmanagedConfigPtr,
+            IntPtr unmanagedNodePtr,
+            YogaLogLevel level,
+            string message)
+        {
+            var config = YGConfigHandle.GetManaged(unmanagedConfigPtr);
+            if (config == null || config._logger == null)
+            {
+                // Default logger
+                System.Diagnostics.Debug.WriteLine(message);
+            }
+            else
+            {
+                var node = YGNodeHandle.GetManaged(unmanagedNodePtr);
+                config._logger(config, node, level, message);
+            }
+
+            if (level == YogaLogLevel.Error || level == YogaLogLevel.Fatal)
+            {
+                throw new InvalidOperationException(message);
+            }
+        }
+
+        public Logger Logger
+        {
+            get {
+                return _logger;
+            }
+
+            set {
+                _logger = value;
+            }
+        }
+
+        public void SetExperimentalFeatureEnabled(
+            YogaExperimentalFeature feature,
+            bool enabled)
+        {
+            Native.YGConfigSetExperimentalFeatureEnabled(_ygConfig, feature, enabled);
+        }
+
+        public bool IsExperimentalFeatureEnabled(YogaExperimentalFeature feature)
+        {
+            return Native.YGConfigIsExperimentalFeatureEnabled(_ygConfig, feature);
+        }
+
+        public bool UseWebDefaults
+        {
+            get
+            {
+                return Native.YGConfigGetUseWebDefaults(_ygConfig);
+            }
+
+            set
+            {
+                Native.YGConfigSetUseWebDefaults(_ygConfig, value);
+            }
+        }
+
+        public float PointScaleFactor
+        {
+            set
+            {
+                Native.YGConfigSetPointScaleFactor(_ygConfig, value);
+            }
+        }
+
+        public static int GetInstanceCount()
+        {
+            return Native.YGConfigGetInstanceCount();
+        }
+
+        public static void SetDefaultLogger(Logger logger)
+        {
+            Default.Logger = logger;
+        }
+    }
+}

csharp/Facebook.Yoga/YogaConstants.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaDimension.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaDirection.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaDisplay.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaEdge.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaExperimentalFeature.cs

@@ -1,17 +1,14 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga
 {
     public enum YogaExperimentalFeature
     {
-        Rounding,
         WebFlexBasis,
     }
 }

csharp/Facebook.Yoga/YogaFlexDirection.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaJustify.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga
@@ -16,5 +14,6 @@ namespace Facebook.Yoga
         FlexEnd,
         SpaceBetween,
         SpaceAround,
+        SpaceEvenly,
     }
 }

csharp/Facebook.Yoga/YogaLogLevel.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga
@@ -16,5 +14,6 @@ namespace Facebook.Yoga
         Info,
         Debug,
         Verbose,
+        Fatal,
     }
 }

csharp/Facebook.Yoga/YogaLogger.cs

@@ -1,54 +1,19 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 using System;
 using System.Runtime.InteropServices;
 
-#if __IOS__
-using ObjCRuntime;
-#endif
-
 namespace Facebook.Yoga
 {
-    internal static class YogaLogger
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-    {
+    public delegate void YogaLogger(
-        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        IntPtr unmanagedConfigPtr,
-        public delegate void Func(YogaLogLevel level, string message);
+        IntPtr unmanagedNotePtr,
-
+        YogaLogLevel level,
-        private static bool _initialized;
+        string message);
-        private static Func _managedLogger = LoggerInternal;
-
-        public static Func Logger = null;
-
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-        [MonoPInvokeCallback(typeof(Func))]
-#endif
-        public static void LoggerInternal(YogaLogLevel level, string message)
-        {
-            if (Logger != null)
-            {
-                Logger(level, message);
-            }
-
-            if (level == YogaLogLevel.Error)
-            {
-                throw new InvalidOperationException(message);
-            }
-        }
-
-        public static void Initialize()
-        {
-            if (!_initialized)
-            {
-                Native.YGInteropSetLogger(_managedLogger);
-                _initialized = true;
-            }
-        }
-    }
 }

csharp/Facebook.Yoga/YogaMeasureFunc.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 using System;
@@ -14,7 +12,7 @@ namespace Facebook.Yoga
 {
     [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
     public delegate YogaSize YogaMeasureFunc(
-        IntPtr node,
+        IntPtr unmanagedNodePtr,
         float width,
         YogaMeasureMode widthMode,
         float height,

csharp/Facebook.Yoga/YogaMeasureMode.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaNode.Spacing.cs

@@ -1,14 +1,10 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
-using System;
-
 namespace Facebook.Yoga
 {
     public partial class YogaNode
@@ -17,7 +13,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Left);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Left));
             }
 
             set
@@ -30,7 +26,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Top);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Top));
             }
 
             set
@@ -43,7 +39,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Right);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Right));
             }
 
             set
@@ -56,7 +52,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Bottom);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Bottom));
             }
 
             set
@@ -69,7 +65,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Start);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.Start));
             }
 
             set
@@ -82,7 +78,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.End);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPosition(_ygNode, YogaEdge.End));
             }
 
             set
@@ -107,7 +103,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Left);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Left));
             }
 
             set
@@ -120,7 +116,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Top);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Top));
             }
 
             set
@@ -133,7 +129,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Right);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Right));
             }
 
             set
@@ -146,7 +142,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Bottom);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Bottom));
             }
 
             set
@@ -159,7 +155,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Start);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Start));
             }
 
             set
@@ -172,7 +168,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.End);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.End));
             }
 
             set
@@ -185,7 +181,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Horizontal);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Horizontal));
             }
 
             set
@@ -198,7 +194,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Vertical);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.Vertical));
             }
 
             set
@@ -211,7 +207,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.All);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMargin(_ygNode, YogaEdge.All));
             }
 
             set
@@ -240,7 +236,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Left);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Left));
             }
 
             set
@@ -253,7 +249,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Top);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Top));
             }
 
             set
@@ -266,7 +262,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Right);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Right));
             }
 
             set
@@ -279,7 +275,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Bottom);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Bottom));
             }
 
             set
@@ -292,7 +288,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Start);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Start));
             }
 
             set
@@ -305,7 +301,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.End);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.End));
             }
 
             set
@@ -318,7 +314,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Horizontal);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Horizontal));
             }
 
             set
@@ -331,7 +327,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Vertical);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.Vertical));
             }
 
             set
@@ -344,7 +340,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.All);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetPadding(_ygNode, YogaEdge.All));
             }
 
             set

csharp/Facebook.Yoga/YogaNode.cs

@@ -1,55 +1,51 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 using System.Text;
 
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-using System.Runtime.InteropServices;
-#endif
 #if __IOS__
 using ObjCRuntime;
 #endif
+#if ENABLE_IL2CPP
+using AOT;
+#endif
 
 namespace Facebook.Yoga
 {
     public partial class YogaNode : IEnumerable<YogaNode>
     {
-        private Native.YGNodeHandle _ygNode;
+        private readonly YGNodeHandle _ygNode;
+        private readonly YogaConfig _config;
         private WeakReference _parent;
         private List<YogaNode> _children;
         private MeasureFunction _measureFunction;
         private BaselineFunction _baselineFunction;
-        private object _data;
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-        private static YogaMeasureFunc _managedMeasure = MeasureInternalIOS;
-        private static YogaBaselineFunc _managedBaseline = BaselineInternalIOS;
-#else
         private YogaMeasureFunc _managedMeasure;
         private YogaBaselineFunc _managedBaseline;
-#endif
+        private object _data;
 
-        public YogaNode()
+        public YogaNode(YogaConfig config = null)
         {
-            YogaLogger.Initialize();
+            _config = config == null ? YogaConfig.Default : config;
-
+            _ygNode = Native.YGNodeNewWithConfig(_config.Handle);
-            _ygNode = Native.YGNodeNew();
             if (_ygNode.IsInvalid)
             {
                 throw new InvalidOperationException("Failed to allocate native memory");
             }
+
+            _ygNode.SetContext(this);
         }
 
         public YogaNode(YogaNode srcNode)
-            : this()
+            : this(srcNode._config)
         {
             CopyStyle(srcNode);
         }
@@ -60,7 +56,9 @@ namespace Facebook.Yoga
             _baselineFunction = null;
             _data = null;
 
+            _ygNode.ReleaseManaged();
             Native.YGNodeReset(_ygNode);
+            _ygNode.SetContext(this);
         }
 
         public bool IsDirty
@@ -273,7 +271,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetFlexBasis(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetFlexBasis(_ygNode));
             }
 
             set
@@ -297,7 +295,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetWidth(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetWidth(_ygNode));
             }
 
             set
@@ -321,7 +319,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetHeight(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetHeight(_ygNode));
             }
 
             set
@@ -345,7 +343,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMaxWidth(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMaxWidth(_ygNode));
             }
 
             set
@@ -365,7 +363,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMaxHeight(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMaxHeight(_ygNode));
             }
 
             set
@@ -385,7 +383,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMinWidth(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMinWidth(_ygNode));
             }
 
             set
@@ -405,7 +403,7 @@ namespace Facebook.Yoga
         {
             get
             {
-                return Native.YGNodeStyleGetMinHeight(_ygNode);
+                return YogaValue.MarshalValue(Native.YGNodeStyleGetMinHeight(_ygNode));
             }
 
             set
@@ -421,7 +419,7 @@ namespace Facebook.Yoga
             }
         }
 
-        public float StyleAspectRatio
+        public float AspectRatio
         {
             get
             {
@@ -550,6 +548,20 @@ namespace Facebook.Yoga
             Native.YGNodeRemoveChild(_ygNode, child._ygNode);
         }
 
+        public void AddChild(YogaNode child)
+        {
+            Insert(Count, child);
+        }
+
+        public void RemoveChild(YogaNode child)
+        {
+            int index = IndexOf(child);
+            if (index >= 0)
+            {
+                RemoveAt(index);
+            }
+        }
+
         public void Clear()
         {
             if (_children != null)
@@ -569,99 +581,71 @@ namespace Facebook.Yoga
         public void SetMeasureFunction(MeasureFunction measureFunction)
         {
             _measureFunction = measureFunction;
-            if (measureFunction != null)
+            _managedMeasure = measureFunction != null ? MeasureInternal : (YogaMeasureFunc)null;
-            {
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-                _ygNode.SetContext(this);
-#else
-                _managedMeasure = MeasureInternal;
-#endif
-            }
             Native.YGNodeSetMeasureFunc(_ygNode, _managedMeasure);
         }
 
         public void SetBaselineFunction(BaselineFunction baselineFunction)
         {
             _baselineFunction = baselineFunction;
-            if (baselineFunction != null)
+            _managedBaseline =
-            {
+                baselineFunction != null ? BaselineInternal : (YogaBaselineFunc)null;
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
-                _ygNode.SetContext(this);
-#else
-                _managedBaseline = BaselineInternal;
-#endif
-            }
             Native.YGNodeSetBaselineFunc(_ygNode, _managedBaseline);
         }
 
-        public void CalculateLayout()
+        public void CalculateLayout(
+            float width = YogaConstants.Undefined, 
+            float height = YogaConstants.Undefined)
         {
             Native.YGNodeCalculateLayout(
                 _ygNode,
-                YogaConstants.Undefined,
+                width,
-                YogaConstants.Undefined,
+                height,
                 Native.YGNodeStyleGetDirection(_ygNode));
         }
 
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+#if (UNITY_IOS && !UNITY_EDITOR) || ENABLE_IL2CPP || __IOS__
         [MonoPInvokeCallback(typeof(YogaMeasureFunc))]
-        private static YogaSize MeasureInternalIOS(
-            IntPtr ygNodePtr,
-            float width,
-            YogaMeasureMode widthMode,
-            float height,
-            YogaMeasureMode heightMode)
-        {
-            var node = Native.YGNodeHandle.GetManaged(ygNodePtr);
-            return node.MeasureInternal(IntPtr.Zero, width, widthMode, height, heightMode);
-        }
 #endif
-
+        private static YogaSize MeasureInternal(
-        private YogaSize MeasureInternal(
+            IntPtr unmanagedNodePtr,
-            IntPtr node,
             float width,
             YogaMeasureMode widthMode,
             float height,
             YogaMeasureMode heightMode)
         {
-            if (_measureFunction == null)
+            var node = YGNodeHandle.GetManaged(unmanagedNodePtr);
+            if (node == null || node._measureFunction == null)
             {
                 throw new InvalidOperationException("Measure function is not defined.");
             }
-
+            return node._measureFunction(node, width, widthMode, height, heightMode);
-            return _measureFunction(this, width, widthMode, height, heightMode);
         }
 
-#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+#if (UNITY_IOS && !UNITY_EDITOR) || ENABLE_IL2CPP || __IOS__
         [MonoPInvokeCallback(typeof(YogaBaselineFunc))]
-        private static float BaselineInternalIOS(
+#endif
-            IntPtr ygNodePtr,
+        private static float BaselineInternal(
+            IntPtr unmanagedNodePtr,
             float width,
             float height)
         {
-            var node = Native.YGNodeHandle.GetManaged(ygNodePtr);
+            var node = YGNodeHandle.GetManaged(unmanagedNodePtr);
-            return node.BaselineInternal(IntPtr.Zero, width, height);
+            if (node == null || node._baselineFunction == null)
-        }
-#endif
-
-        private float BaselineInternal(IntPtr node, float width, float height)
-        {
-            if (_baselineFunction == null)
             {
                 throw new InvalidOperationException("Baseline function is not defined.");
             }
-
+            return node._baselineFunction(node, width, height);
-            return _baselineFunction(this, width, height);
         }
 
         public string Print(YogaPrintOptions options =
             YogaPrintOptions.Layout|YogaPrintOptions.Style|YogaPrintOptions.Children)
         {
             StringBuilder sb = new StringBuilder();
-            YogaLogger.Func orig = YogaLogger.Logger;
+            Logger orig = _config.Logger;
-            YogaLogger.Logger = (level, message) => {sb.Append(message);};
+            _config.Logger = (config, node, level, message) => {sb.Append(message);};
             Native.YGNodePrint(_ygNode, options);
-            YogaLogger.Logger = orig;
+            _config.Logger = orig;
             return sb.ToString();
         }
 
@@ -681,17 +665,5 @@ namespace Facebook.Yoga
         {
             return Native.YGNodeGetInstanceCount();
         }
-
-        public static void SetExperimentalFeatureEnabled(
-            YogaExperimentalFeature feature,
-            bool enabled)
-        {
-            Native.YGSetExperimentalFeatureEnabled(feature, enabled);
-        }
-
-        public static bool IsExperimentalFeatureEnabled(YogaExperimentalFeature feature)
-        {
-            return Native.YGIsExperimentalFeatureEnabled(feature);
-        }
     }
 }

csharp/Facebook.Yoga/YogaNodeType.cs

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+namespace Facebook.Yoga
+{
+    public enum YogaNodeType
+    {
+        Default,
+        Text,
+    }
+}

csharp/Facebook.Yoga/YogaOverflow.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaPositionType.cs

@@ -1,10 +1,8 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga

csharp/Facebook.Yoga/YogaPrintOptions.cs

@@ -1,14 +1,13 @@
 /**
  * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
+ * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
+ * LICENSE file in the root directory of this source tree.
- * of patent rights can be found in the PATENTS file in the same directory.
  */
 
 namespace Facebook.Yoga
 {
+    [System.Flags]
     public enum YogaPrintOptions
     {
         Layout = 1,