C# transpiler, API, and tests

src/CSharpTranspiler.js

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+/**
+ * Copyright (c) 2014, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+function __transpileToCSharpCommon(code) {
+  return code
+    .replace(/CSS_UNDEFINED/g, 'CSSConstants.UNDEFINED')
+    .replace(/CSS_JUSTIFY_/g, 'CSSJustify.')
+    .replace(/CSS_ALIGN_/g, 'CSSAlign.')
+    .replace(/CSS_POSITION_/g, 'CSSPositionType.')
+    .replace(/css_flex_direction_t/g, 'CSSFlexDirection')
+    .replace(/css_direction_t/g, 'CSSDirection')
+    .replace(/css_align_t/g, 'CSSAlign')
+    .replace(/css_justify_t/g, 'CSSJustify')
+    .replace(/css_dim_t/g, 'MeasureOutput')
+    .replace(/bool/g, 'boolean')
+    .replace(/style\[dim/g, 'style.dimensions[dim')
+    .replace(/(style|layout)\.width/g, '$1.dimensions[DIMENSION_WIDTH]')
+    .replace(/(style|layout)\.height/g, '$1.dimensions[DIMENSION_HEIGHT]')
+    .replace(/layout\[dim/g, 'layout.dimensions[dim')
+    .replace(/layout\[pos/g, 'layout.position[pos')
+    .replace(/layout\[leading/g, 'layout.position[leading')
+    .replace(/layout\[trailing/g, 'layout.position[trailing')
+    .replace(/getPositionType\((.+?)\)/g, '$1.style.positionType')
+    .replace(/getJustifyContent\((.+?)\)/g, '$1.style.justifyContent')
+    .replace(/getAlignContent\((.+?)\)/g, '$1.style.alignContent')
+    .replace(/isPosDefined\((.+?),\s*(.+?)\)/g, '!isUndefined\($1.style.position[$2]\)')
+    .replace(/isDimDefined\((.+?),\s*(.+?)\)/g, '\(!isUndefined\($1.style.dimensions[dim[$2]]\) && $1.style.dimensions[dim[$2]] > 0.0\)')
+    .replace(/getPosition\((.+?),\s*(.+?)\)/g, '\(isUndefined\($1.style.position[$2]\) ?  0 : $1.style.position[$2]\)')
+    .replace(/setTrailingPosition\((.+?),\s*(.+?),\s*(.+?)\)/g, '$2.layout.position[trailing[$3]] = $1.layout.dimensions[dim[$3]] - $2.layout.dimensions[dim[$3]] - $2.layout.position[pos[$3]]')
+    .replace(/isFlex\((.+?)\)/g, '\($1.style.positionType == CSSPositionType.RELATIVE && $1.style.flex > 0\)')
+    .replace(/isFlexWrap\((.+?)\)/g, '\($1.style.flexWrap == CSSWrap.WRAP\)')
+    .replace(/getPaddingAndBorderAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingPaddingAndBorder($1, $2) + getTrailingPaddingAndBorder($1, $2)\)')
+    .replace(/getBorderAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingBorder($1, $2) + getTrailingBorder($1, $2)\)')
+    .replace(/getMarginAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingMargin($1, $2) + getTrailingMargin($1, $2)\)')
+    .replace(/getLeadingPaddingAndBorder\((.+?),\s*(.+?)\)/g, '\(getLeadingPadding($1, $2) + getLeadingBorder($1, $2)\)')
+    .replace(/getTrailingPaddingAndBorder\((.+?),\s*(.+?)\)/g, '\(getTrailingPadding($1, $2) + getTrailingBorder($1, $2)\)')
+    .replace(/getDimWithMargin\((.+?),\s*(.+?)\)/g, '\($1.layout.dimensions[dim[$2]] + getLeadingMargin($1, $2) + getTrailingMargin($1, $2)\)')
+    .replace(/getLeadingMargin\((.+?),\s*(.+?)\)/g, '$1.style.margin.getWithFallback(leadingSpacing[$2], leading[$2])')
+    .replace(/getTrailingMargin\((.+?),\s*(.+?)\)/g, '$1.style.margin.getWithFallback(trailingSpacing[$2], trailing[$2])')
+    .replace(/getLeadingPadding\((.+?),\s*(.+?)\)/g, '$1.style.padding.getWithFallback(leadingSpacing[$2], leading[$2])')
+    .replace(/getTrailingPadding\((.+?),\s*(.+?)\)/g, '$1.style.padding.getWithFallback(trailingSpacing[$2], trailing[$2])')
+    .replace(/getLeadingBorder\((.+?),\s*(.+?)\)/g, '$1.style.border.getWithFallback(leadingSpacing[$2], leading[$2])')
+    .replace(/getTrailingBorder\((.+?),\s*(.+?)\)/g, '$1.style.border.getWithFallback(trailingSpacing[$2], trailing[$2])')
+    .replace(/isRowDirection\((.+?)\)/g, '\($1 == CSS_FLEX_DIRECTION_ROW || $1 == CSS_FLEX_DIRECTION_ROW_REVERSE\)')
+    .replace(/isUndefined\((.+?)\)/g, 'float.IsNaN\($1\)')
+    .replace(/\/\*\(c\)!([^*]+)\*\//g, '')
+    .replace(/var\/\*\(java\)!([^*]+)\*\//g, '$1')
+    .replace(/\/\*\(java\)!([^*]+)\*\//g, '$1')
+
+    // additional case conversions
+
+    .replace(/(CSSConstants|CSSWrap|CSSJustify|CSSAlign|CSSPositionType)\.([_A-Z]+)/g,
+        function (str, match1, match2) {
+          return match1 + "." + constantToPascalCase(match2);
+        });
+}
+
+function __transpileSingleTestToCSharp(code) {
+  return __transpileToCSharpCommon(code)
+ .replace(/CSS_DIRECTION_/g, 'CSSDirection.')
+    .replace(/CSS_FLEX_DIRECTION_/g, 'CSSFlexDirection.')
+    .replace(/CSS_WRAP/g, 'CSSWrap.WRAP')
+    .replace(/new_test_css_node/g, 'new TestCSSNode')
+    .replace( // style.position[CSS_TOP] => style.position[CSSLayout.POSITION_TOP]
+        /(style|layout)\.position\[CSS_(LEFT|TOP|RIGHT|BOTTOM)\]/g,
+        function (str, match1, match2) {
+            return match1 + '.position[POSITION_' + match2 + ']';
+        })
+    .replace( // style.dimensions[CSS_WIDTH] => style.dimensions[CSSLayout.DIMENSION_WIDTH]
+        /(style|layout)\.dimensions\[CSS_(WIDTH|HEIGHT)\]/g,
+        function (str, match1, match2) {
+            return match1 + '.dimensions[DIMENSION_' + match2 + ']';
+        })
+    .replace( // style.maxDimensions[CSS_WIDTH] => style.maxWidth
+        /(style|layout)\.maxDimensions\[CSS_(WIDTH|HEIGHT)\]/g,
+        function (str, match1, match2) {
+            return match1 + '.max' + match2.substr(0, 1).toUpperCase() + match2.substr(1).toLowerCase();
+        })
+    .replace( // style.minDimensions[CSS_WIDTH] => style.minWidth
+        /(style|layout)\.minDimensions\[CSS_(WIDTH|HEIGHT)\]/g,
+        function (str, match1, match2) {
+            return match1 + '.min' + match2.substr(0, 1).toUpperCase() + match2.substr(1).toLowerCase();
+        })
+    .replace( // style.margin[CSS_TOP] = 12.3 => style.margin[Spacing.TOP].set(12.3)
+        /style\.(margin|border|padding)\[CSS_(TOP|BOTTOM|LEFT|RIGHT|START|END)\]\s+=\s+(-?[\.\d]+)/g,
+        function (str, match1, match2, match3) {
+            var propertyCap = match1.charAt(0).toUpperCase() + match1.slice(1);
+            return 'set' + propertyCap + '(Spacing.' + match2 + ', ' + match3 + ')';
+        })
+    .replace( // style.margin[CSS_TOP] => style.margin[Spacing.TOP]
+        /style\.(margin|border|padding)\[CSS_(TOP|BOTTOM|LEFT|RIGHT|START|END)\]/g,
+        function (str, match1, match2) {
+            return 'style.' + match1 + '.get(Spacing.' + match2 + ')';
+        })
+    .replace(/get_child\(.*context\,\s([^\)]+)\)/g, 'getChildAt($1)')
+    .replace(/init_css_node_children/g, 'addChildren')
+    .replace(/css_node_t(\s)\*/g, 'TestCSSNode$1')
+    .replace(/\->/g, '.')
+    .replace(/(\d+\.\d+)/g, '$1f')
+    .replace( // style.flex_direction => style.flexDirection
+        /style\.([^_\[\]\s]+)_(\w)(\w+)/g,
+        function (str, match1, match2, match3) {
+            return 'style.' + match1 + match2.toUpperCase() + match3;
+        })
+    .replace(/(\w+)\.measure\s+=\s+.+/, '$1.setMeasureFunction(sTestMeasureFunction);')
+
+    // additional case conversions
+
+    .replace(/(CSSWrap|CSSFlexDirection)\.([_A-Z]+)/g,
+        function (str, match1, match2) {
+          return match1 + "." + constantToPascalCase(match2);
+        });
+}
+
+function indent(code) {
+  return code
+    .split('\n')
+    .map(function(line) { return '    ' + line; })
+    .join('\n');
+}
+
+function constantToPascalCase(str) {
+  return str[0] + str.substr(1)
+    .toLowerCase()
+    .replace(/_(.)/g,
+      function (_, m) { return m.toUpperCase(); });
+}
+
+var CSharpTranspiler = {
+  transpileLayoutEngine: function(code) {
+    return indent(
+      __transpileToCSharpCommon(code)
+        .replace(/function\s+layoutNode.*/, '')
+        .replace('node.style.measure', 'node.measure')
+        .replace(/\.children\.length/g, '.getChildCount()')
+        .replace(/node.children\[i\]/g, 'node.getChildAt(i)')
+        .replace(/node.children\[ii\]/g, 'node.getChildAt(ii)')
+        .replace(/fmaxf/g, 'Math.Max')
+        .replace(/\/\*\([^\/]+\*\/\n/g, '') // remove comments for other languages
+        .replace(/var\/\*([^\/]+)\*\//g, '$1')
+        .replace(/ === /g, ' == ')
+        .replace(/ !== /g, ' != ')
+        .replace(/\n {2}/g, '\n')
+        .replace(/\/[*]!([^*]+)[*]\//g, '$1')
+        .replace(/css_node_t\*/g, 'CSSNode'));
+  },
+
+  transpileCConstDefs: function(cConstDefs) {
+    return indent(
+      cConstDefs
+        .replace(/#define\s+(\w+)\s+(\"[^\"]+\")/g, 'public static readonly string $1 = $2;')
+        .replace(/#define\s+(\w+)\s+(.+)/g, 'public static readonly float $1 = $2f;'));
+  },
+
+  transpileCTestsArray: function(allTestsInC) {
+    var allTestsInCSharp = [];
+    for (var i = 0; i < allTestsInC.length; i++) {
+      allTestsInCSharp[i] =
+          "    [Test]\n" +
+          "    public void TestCase" + i + "()\n" +
+          __transpileSingleTestToCSharp(allTestsInC[i]);
+    }
+    return allTestsInCSharp.join('\n\n');
+  }
+}
+
+if (typeof module !== 'undefined') {
+  module.exports = CSharpTranspiler;
+}

src/csharp/.editorconfig

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+root = true
+
+[*]
+end_of_line=LF
+
+[*.cs]
+indent_style=space
+indent_size=4
+
+[*.js]
+indent_style=space
+indent_size=2
+

src/csharp/.gitignore

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+bin/
+obj/
+/packages/
+/.vs/
+*.user
+*.nupkg

src/csharp/Facebook.CSSLayout.Tests/CSSNodeTest.cs

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+/**
+ * Copyright (c) 2014, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+using System;
+using NUnit.Framework;
+
+namespace Facebook.CSSLayout.Tests
+{
+    /**
+     * Tests for {@link CSSNode}.
+     */
+    public class CSSNodeTest
+    {
+
+        [Test]
+        public void testAddChildGetParent()
+        {
+            CSSNode parent = new CSSNode();
+            CSSNode child = new CSSNode();
+
+            Assert.Null(child.getParent());
+            Assert.AreEqual(0, parent.getChildCount());
+
+            parent.addChildAt(child, 0);
+
+            Assert.AreEqual(1, parent.getChildCount());
+            Assert.AreEqual(child, parent.getChildAt(0));
+            Assert.AreEqual(parent, child.getParent());
+
+            parent.removeChildAt(0);
+
+            Assert.Null(child.getParent());
+            Assert.AreEqual(0, parent.getChildCount());
+        }
+
+        [Test, ExpectedException(typeof(InvalidOperationException))]
+        public void testCannotAddChildToMultipleParents()
+        {
+            CSSNode parent1 = new CSSNode();
+            CSSNode parent2 = new CSSNode();
+            CSSNode child = new CSSNode();
+
+            parent1.addChildAt(child, 0);
+            parent2.addChildAt(child, 0);
+        }
+    }
+}

src/csharp/Facebook.CSSLayout.Tests/Facebook.CSSLayout.Tests.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{E687C8FD-0A0D-450F-853D-EC301BE1C038}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Facebook.CSSLayout.Tests</RootNamespace>
+    <AssemblyName>Facebook.CSSLayout.Tests</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="nunit.framework, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="CSSNodeTest.cs" />
+    <Compile Include="LayoutCachingTest.cs" />
+    <Compile Include="LayoutEngineTest.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="TestConstants.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Facebook.CSSLayout\Facebook.CSSLayout.csproj">
+      <Project>{d534fb4b-a7d4-4a29-96d3-f39a91a259bd}</Project>
+      <Name>Facebook.CSSLayout</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>