gentest/fixtures/YGAutoTest.html

@@ -0,0 +1,25 @@
+<div id="auto_width" style="width: auto; height: 50px; flex-direction: row;">
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+</div>
+
+<div id="auto_height" style="width: 50px; height: auto;">
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+</div>
+
+<div id="auto_flex_basis" style="width: 50px; flex-basis: auto;">
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+  <div style="width: 50px; height: 50px"></div>
+</div>
+
+<div id="auto_position" style="width: 50px; height: 50px;">
+  <div style="width: 25px; height: 25px; right: auto"></div>
+</div>
+
+<div id="auto_margin" style="width: 50px; height: 50px;">
+  <div style="width: 25px; height: 25px; margin-left: auto"></div>
+</div>

gentest/gentest-cpp.js

@@ -12,7 +12,7 @@ function toValueCpp(value) {
   return n + (Number(n) == n && n % 1 !== 0 ? 'f' : '');
 }
 
-function toFunctionName(value) {
+function toFunctionNameCpp(value) {
   if (value.indexOf('%') >= 0) {
     return 'Percent';
   } else if (value.indexOf('Auto') >= 0) {
@@ -21,6 +21,23 @@ function toFunctionName(value) {
   return '';
 }
 
+function keywordFunctionCpp(functionPrefix, nodeName, value) {
+  const functionSuffix = toFunctionNameCpp(value);
+  if (functionSuffix == 'Auto') {
+    return functionPrefix + functionSuffix + '(' + nodeName + ');';
+  } else {
+    return (
+      functionPrefix +
+      functionSuffix +
+      '(' +
+      nodeName +
+      ', ' +
+      toValueCpp(value) +
+      ');'
+    );
+  }
+}
+
 const CPPEmitter = function () {
   Emitter.call(this, 'cpp', '  ');
 };
@@ -231,7 +248,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     value: function (nodeName, value) {
       this.push(
         'YGNodeStyleSetAspectRatio' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -273,15 +290,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
 
   YGNodeStyleSetFlexBasis: {
     value: function (nodeName, value) {
-      this.push(
+      this.push(keywordFunctionCpp('YGNodeStyleSetFlexBasis', nodeName, value));
-        'YGNodeStyleSetFlexBasis' +
-          toFunctionName(value) +
-          '(' +
-          nodeName +
-          ', ' +
-          toValueCpp(value) +
-          ');',
-      );
     },
   },
 
@@ -325,20 +334,6 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
-  YGNodeStyleSetHeight: {
-    value: function (nodeName, value) {
-      this.push(
-        'YGNodeStyleSetHeight' +
-          toFunctionName(value) +
-          '(' +
-          nodeName +
-          ', ' +
-          toValueCpp(value) +
-          ');',
-      );
-    },
-  },
-
   YGNodeStyleSetJustifyContent: {
     value: function (nodeName, value) {
       this.push(
@@ -361,7 +356,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
       }
       this.push(
         'YGNodeStyleSetMargin' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -372,11 +367,23 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
+  YGNodeStyleSetHeight: {
+    value: function (nodeName, value) {
+      this.push(keywordFunctionCpp('YGNodeStyleSetHeight', nodeName, value));
+    },
+  },
+
+  YGNodeStyleSetWidth: {
+    value: function (nodeName, value) {
+      this.push(keywordFunctionCpp('YGNodeStyleSetWidth', nodeName, value));
+    },
+  },
+
   YGNodeStyleSetMaxHeight: {
     value: function (nodeName, value) {
       this.push(
         'YGNodeStyleSetMaxHeight' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -390,7 +397,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     value: function (nodeName, value) {
       this.push(
         'YGNodeStyleSetMaxWidth' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -404,7 +411,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     value: function (nodeName, value) {
       this.push(
         'YGNodeStyleSetMinHeight' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -418,7 +425,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     value: function (nodeName, value) {
       this.push(
         'YGNodeStyleSetMinWidth' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -440,7 +447,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     value: function (nodeName, edge, value) {
       this.push(
         'YGNodeStyleSetPadding' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -462,7 +469,7 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
       }
       this.push(
         'YGNodeStyleSetPosition' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +
@@ -485,25 +492,11 @@ CPPEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
-  YGNodeStyleSetWidth: {
-    value: function (nodeName, value) {
-      this.push(
-        'YGNodeStyleSetWidth' +
-          toFunctionName(value) +
-          '(' +
-          nodeName +
-          ', ' +
-          toValueCpp(value) +
-          ');',
-      );
-    },
-  },
-
   YGNodeStyleSetGap: {
     value: function (nodeName, gap, value) {
       this.push(
         'YGNodeStyleSetGap' +
-          toFunctionName(value) +
+          toFunctionNameCpp(value) +
           '(' +
           nodeName +
           ', ' +

gentest/gentest-driver.ts

@@ -100,15 +100,21 @@ for (const fileName of fixtures) {
   await driver.get('file://' + process.cwd() + '/test.html');
   const logs = await driver.manage().logs().get(logging.Type.BROWSER);
 
+  const testLogs = logs.filter(
+    log => !log.message.replace(/^[^"]*/, '').startsWith('"gentest-log:'),
+  );
+
   await fs.writeFile(
     `${yogaDir}/tests/generated/${fileNameNoExtension}.cpp`,
-    addSignatureToSourceCode(JSON.parse(logs[0].message.replace(/^[^"]*/, ''))),
+    addSignatureToSourceCode(
+      JSON.parse(testLogs[0].message.replace(/^[^"]*/, '')),
+    ),
   );
 
   await fs.writeFile(
     `${yogaDir}/java/tests/generated/com/facebook/yoga/${fileNameNoExtension}.java`,
     addSignatureToSourceCode(
-      JSON.parse(logs[1].message.replace(/^[^"]*/, '')).replace(
+      JSON.parse(testLogs[1].message.replace(/^[^"]*/, '')).replace(
         'YogaTest',
         fileNameNoExtension,
       ),
@@ -118,7 +124,7 @@ for (const fileName of fixtures) {
   await fs.writeFile(
     `${yogaDir}/javascript/tests/generated/${fileNameNoExtension}.test.ts`,
     addSignatureToSourceCode(
-      JSON.parse(logs[2].message.replace(/^[^"]*/, '')).replace(
+      JSON.parse(testLogs[2].message.replace(/^[^"]*/, '')).replace(
         'YogaTest',
         fileNameNoExtension,
       ),

gentest/gentest-java.js

@@ -21,6 +21,23 @@ function toMethodName(value) {
   return '';
 }
 
+function keywordMethod(methodPrefix, nodeName, value) {
+  const methodSuffix = toMethodName(value);
+  if (methodSuffix == 'Auto') {
+    return nodeName + '.' + methodPrefix + methodSuffix + '();';
+  } else {
+    return (
+      nodeName +
+      '.' +
+      methodPrefix +
+      methodSuffix +
+      '(' +
+      toValueJava(value) +
+      'f);'
+    );
+  }
+}
+
 const JavaEmitter = function () {
   Emitter.call(this, 'java', '  ');
 };
@@ -273,14 +290,7 @@ JavaEmitter.prototype = Object.create(Emitter.prototype, {
 
   YGNodeStyleSetFlexBasis: {
     value: function (nodeName, value) {
-      this.push(
+      this.push(keywordMethod('setFlexBasis', nodeName, value));
-        nodeName +
-          '.setFlexBasis' +
-          toMethodName(value) +
-          '(' +
-          toValueJava(value) +
-          'f);',
-      );
     },
   },
 
@@ -308,19 +318,6 @@ JavaEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
-  YGNodeStyleSetHeight: {
-    value: function (nodeName, value) {
-      this.push(
-        nodeName +
-          '.setHeight' +
-          toMethodName(value) +
-          '(' +
-          toValueJava(value) +
-          'f);',
-      );
-    },
-  },
-
   YGNodeStyleSetJustifyContent: {
     value: function (nodeName, value) {
       this.push(nodeName + '.setJustifyContent(' + toValueJava(value) + ');');
@@ -348,6 +345,18 @@ JavaEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
+  YGNodeStyleSetHeight: {
+    value: function (nodeName, value) {
+      this.push(keywordMethod('setHeight', nodeName, value));
+    },
+  },
+
+  YGNodeStyleSetWidth: {
+    value: function (nodeName, value) {
+      this.push(keywordMethod('setWidth', nodeName, value));
+    },
+  },
+
   YGNodeStyleSetMaxHeight: {
     value: function (nodeName, value) {
       this.push(
@@ -448,19 +457,6 @@ JavaEmitter.prototype = Object.create(Emitter.prototype, {
     },
   },
 
-  YGNodeStyleSetWidth: {
-    value: function (nodeName, value) {
-      this.push(
-        nodeName +
-          '.setWidth' +
-          toMethodName(value) +
-          '(' +
-          toValueJava(value) +
-          'f);',
-      );
-    },
-  },
-
   YGNodeStyleSetGap: {
     value: function (nodeName, gap, value) {
       this.push(

gentest/gentest-log.js

@@ -0,0 +1,11 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// eslint-disable-next-line no-unused-vars
+function gentestLog(message) {
+  console.log('gentest-log: ', message);
+}

gentest/test-template.html

@@ -8,6 +8,7 @@
   <script src="gentest-cpp.js"></script>
   <script src="gentest-java.js"></script>
   <script src="gentest-javascript.js"></script>
+  <script src="gentest-log.js"></script>
 
   <style>
     @font-face {

java/tests/generated/com/facebook/yoga/YGAutoTest.java

@@ -0,0 +1,325 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated SignedSource<<30103b31d09984d8443cf1ba544adeb7>>
+ * generated by gentest/gentest-driver.ts from gentest/fixtures/YGAutoTest.html
+ */
+
+package com.facebook.yoga;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import com.facebook.yoga.utils.TestUtils;
+
+@RunWith(Parameterized.class)
+public class YGAutoTest {
+  @Parameterized.Parameters(name = "{0}")
+  public static Iterable<TestParametrization.NodeFactory> nodeFactories() {
+    return TestParametrization.nodeFactories();
+  }
+
+  @Parameterized.Parameter public TestParametrization.NodeFactory mNodeFactory;
+
+  @Test
+  public void test_auto_width() {
+    YogaConfig config = YogaConfigFactory.create();
+
+    final YogaNode root = createNode(config);
+    root.setFlexDirection(YogaFlexDirection.ROW);
+    root.setPositionType(YogaPositionType.ABSOLUTE);
+    root.setWidthAuto();
+    root.setHeight(50f);
+
+    final YogaNode root_child0 = createNode(config);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = createNode(config);
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+
+    final YogaNode root_child2 = createNode(config);
+    root_child2.setWidth(50f);
+    root_child2.setHeight(50f);
+    root.addChildAt(root_child2, 2);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(150f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(50f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(100f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(150f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(100f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(50f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_auto_height() {
+    YogaConfig config = YogaConfigFactory.create();
+
+    final YogaNode root = createNode(config);
+    root.setPositionType(YogaPositionType.ABSOLUTE);
+    root.setWidth(50f);
+    root.setHeightAuto();
+
+    final YogaNode root_child0 = createNode(config);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = createNode(config);
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+
+    final YogaNode root_child2 = createNode(config);
+    root_child2.setWidth(50f);
+    root_child2.setHeight(50f);
+    root.addChildAt(root_child2, 2);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(150f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(150f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_auto_flex_basis() {
+    YogaConfig config = YogaConfigFactory.create();
+
+    final YogaNode root = createNode(config);
+    root.setPositionType(YogaPositionType.ABSOLUTE);
+    root.setWidth(50f);
+
+    final YogaNode root_child0 = createNode(config);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = createNode(config);
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+
+    final YogaNode root_child2 = createNode(config);
+    root_child2.setWidth(50f);
+    root_child2.setHeight(50f);
+    root.addChildAt(root_child2, 2);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(150f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(150f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_auto_position() {
+    YogaConfig config = YogaConfigFactory.create();
+
+    final YogaNode root = createNode(config);
+    root.setPositionType(YogaPositionType.ABSOLUTE);
+    root.setWidth(50f);
+    root.setHeight(50f);
+
+    final YogaNode root_child0 = createNode(config);
+    root_child0.setPositionAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(25f);
+    root_child0.setHeight(25f);
+    root.addChildAt(root_child0, 0);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(25f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_auto_margin() {
+    YogaConfig config = YogaConfigFactory.create();
+
+    final YogaNode root = createNode(config);
+    root.setPositionType(YogaPositionType.ABSOLUTE);
+    root.setWidth(50f);
+    root.setHeight(50f);
+
+    final YogaNode root_child0 = createNode(config);
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setWidth(25f);
+    root_child0.setHeight(25f);
+    root.addChildAt(root_child0, 0);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(25f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout(YogaConstants.UNDEFINED, YogaConstants.UNDEFINED);
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(50f, root.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(25f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutHeight(), 0.0f);
+  }
+
+  private YogaNode createNode(YogaConfig config) {
+    return mNodeFactory.create(config);
+  }
+}

javascript/tests/generated/YGAutoTest.test.ts

@@ -0,0 +1,347 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated SignedSource<<234cdb7f76ac586e034a5b6ca2033fa4>>
+ * generated by gentest/gentest-driver.ts from gentest/fixtures/YGAutoTest.html
+ */
+
+import { instrinsicSizeMeasureFunc } from '../tools/utils.ts'
+import Yoga from 'yoga-layout';
+import {
+  Align,
+  BoxSizing,
+  Direction,
+  Display,
+  Edge,
+  Errata,
+  ExperimentalFeature,
+  FlexDirection,
+  Gutter,
+  Justify,
+  MeasureMode,
+  Overflow,
+  PositionType,
+  Unit,
+  Wrap,
+} from 'yoga-layout';
+
+test('auto_width', () => {
+  const config = Yoga.Config.create();
+  let root;
+
+  try {
+    root = Yoga.Node.create(config);
+    root.setFlexDirection(FlexDirection.Row);
+    root.setPositionType(PositionType.Absolute);
+    root.setWidth('auto');
+    root.setHeight(50);
+
+    const root_child0 = Yoga.Node.create(config);
+    root_child0.setWidth(50);
+    root_child0.setHeight(50);
+    root.insertChild(root_child0, 0);
+
+    const root_child1 = Yoga.Node.create(config);
+    root_child1.setWidth(50);
+    root_child1.setHeight(50);
+    root.insertChild(root_child1, 1);
+
+    const root_child2 = Yoga.Node.create(config);
+    root_child2.setWidth(50);
+    root_child2.setHeight(50);
+    root.insertChild(root_child2, 2);
+    root.calculateLayout(undefined, undefined, Direction.LTR);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(150);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(50);
+    expect(root_child1.getComputedTop()).toBe(0);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(100);
+    expect(root_child2.getComputedTop()).toBe(0);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+
+    root.calculateLayout(undefined, undefined, Direction.RTL);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(150);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(100);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(50);
+    expect(root_child1.getComputedTop()).toBe(0);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(0);
+    expect(root_child2.getComputedTop()).toBe(0);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+  } finally {
+    if (typeof root !== 'undefined') {
+      root.freeRecursive();
+    }
+
+    config.free();
+  }
+});
+test('auto_height', () => {
+  const config = Yoga.Config.create();
+  let root;
+
+  try {
+    root = Yoga.Node.create(config);
+    root.setPositionType(PositionType.Absolute);
+    root.setWidth(50);
+    root.setHeight('auto');
+
+    const root_child0 = Yoga.Node.create(config);
+    root_child0.setWidth(50);
+    root_child0.setHeight(50);
+    root.insertChild(root_child0, 0);
+
+    const root_child1 = Yoga.Node.create(config);
+    root_child1.setWidth(50);
+    root_child1.setHeight(50);
+    root.insertChild(root_child1, 1);
+
+    const root_child2 = Yoga.Node.create(config);
+    root_child2.setWidth(50);
+    root_child2.setHeight(50);
+    root.insertChild(root_child2, 2);
+    root.calculateLayout(undefined, undefined, Direction.LTR);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(150);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(0);
+    expect(root_child1.getComputedTop()).toBe(50);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(0);
+    expect(root_child2.getComputedTop()).toBe(100);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+
+    root.calculateLayout(undefined, undefined, Direction.RTL);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(150);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(0);
+    expect(root_child1.getComputedTop()).toBe(50);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(0);
+    expect(root_child2.getComputedTop()).toBe(100);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+  } finally {
+    if (typeof root !== 'undefined') {
+      root.freeRecursive();
+    }
+
+    config.free();
+  }
+});
+test('auto_flex_basis', () => {
+  const config = Yoga.Config.create();
+  let root;
+
+  try {
+    root = Yoga.Node.create(config);
+    root.setPositionType(PositionType.Absolute);
+    root.setWidth(50);
+
+    const root_child0 = Yoga.Node.create(config);
+    root_child0.setWidth(50);
+    root_child0.setHeight(50);
+    root.insertChild(root_child0, 0);
+
+    const root_child1 = Yoga.Node.create(config);
+    root_child1.setWidth(50);
+    root_child1.setHeight(50);
+    root.insertChild(root_child1, 1);
+
+    const root_child2 = Yoga.Node.create(config);
+    root_child2.setWidth(50);
+    root_child2.setHeight(50);
+    root.insertChild(root_child2, 2);
+    root.calculateLayout(undefined, undefined, Direction.LTR);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(150);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(0);
+    expect(root_child1.getComputedTop()).toBe(50);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(0);
+    expect(root_child2.getComputedTop()).toBe(100);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+
+    root.calculateLayout(undefined, undefined, Direction.RTL);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(150);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(50);
+    expect(root_child0.getComputedHeight()).toBe(50);
+
+    expect(root_child1.getComputedLeft()).toBe(0);
+    expect(root_child1.getComputedTop()).toBe(50);
+    expect(root_child1.getComputedWidth()).toBe(50);
+    expect(root_child1.getComputedHeight()).toBe(50);
+
+    expect(root_child2.getComputedLeft()).toBe(0);
+    expect(root_child2.getComputedTop()).toBe(100);
+    expect(root_child2.getComputedWidth()).toBe(50);
+    expect(root_child2.getComputedHeight()).toBe(50);
+  } finally {
+    if (typeof root !== 'undefined') {
+      root.freeRecursive();
+    }
+
+    config.free();
+  }
+});
+test('auto_position', () => {
+  const config = Yoga.Config.create();
+  let root;
+
+  try {
+    root = Yoga.Node.create(config);
+    root.setPositionType(PositionType.Absolute);
+    root.setWidth(50);
+    root.setHeight(50);
+
+    const root_child0 = Yoga.Node.create(config);
+    root_child0.setPositionAuto(Edge.Right);
+    root_child0.setWidth(25);
+    root_child0.setHeight(25);
+    root.insertChild(root_child0, 0);
+    root.calculateLayout(undefined, undefined, Direction.LTR);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(0);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(25);
+    expect(root_child0.getComputedHeight()).toBe(25);
+
+    root.calculateLayout(undefined, undefined, Direction.RTL);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(25);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(25);
+    expect(root_child0.getComputedHeight()).toBe(25);
+  } finally {
+    if (typeof root !== 'undefined') {
+      root.freeRecursive();
+    }
+
+    config.free();
+  }
+});
+test('auto_margin', () => {
+  const config = Yoga.Config.create();
+  let root;
+
+  try {
+    root = Yoga.Node.create(config);
+    root.setPositionType(PositionType.Absolute);
+    root.setWidth(50);
+    root.setHeight(50);
+
+    const root_child0 = Yoga.Node.create(config);
+    root_child0.setMargin(Edge.Left, 'auto');
+    root_child0.setWidth(25);
+    root_child0.setHeight(25);
+    root.insertChild(root_child0, 0);
+    root.calculateLayout(undefined, undefined, Direction.LTR);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(25);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(25);
+    expect(root_child0.getComputedHeight()).toBe(25);
+
+    root.calculateLayout(undefined, undefined, Direction.RTL);
+
+    expect(root.getComputedLeft()).toBe(0);
+    expect(root.getComputedTop()).toBe(0);
+    expect(root.getComputedWidth()).toBe(50);
+    expect(root.getComputedHeight()).toBe(50);
+
+    expect(root_child0.getComputedLeft()).toBe(25);
+    expect(root_child0.getComputedTop()).toBe(0);
+    expect(root_child0.getComputedWidth()).toBe(25);
+    expect(root_child0.getComputedHeight()).toBe(25);
+  } finally {
+    if (typeof root !== 'undefined') {
+      root.freeRecursive();
+    }
+
+    config.free();
+  }
+});

tests/StyleTest.cpp

@@ -12,7 +12,7 @@ namespace facebook::yoga {
 
 TEST(Style, computed_padding_is_floored) {
   yoga::Style style;
-  style.setPadding(Edge::All, value::points(-1.0f));
+  style.setPadding(Edge::All, StyleLength::points(-1.0f));
   auto paddingStart = style.computeInlineStartPadding(
       FlexDirection::Row, Direction::LTR, 0.0f /*widthSize*/);
   ASSERT_EQ(paddingStart, 0.0f);
@@ -20,7 +20,7 @@ TEST(Style, computed_padding_is_floored) {
 
 TEST(Style, computed_border_is_floored) {
   yoga::Style style;
-  style.setBorder(Edge::All, value::points(-1.0f));
+  style.setBorder(Edge::All, StyleLength::points(-1.0f));
   auto borderStart =
       style.computeInlineStartBorder(FlexDirection::Row, Direction::LTR);
   ASSERT_EQ(borderStart, 0.0f);
@@ -28,14 +28,14 @@ TEST(Style, computed_border_is_floored) {
 
 TEST(Style, computed_gap_is_floored) {
   yoga::Style style;
-  style.setGap(Gutter::Column, value::points(-1.0f));
+  style.setGap(Gutter::Column, StyleLength::points(-1.0f));
   auto gapBetweenColumns = style.computeGapForAxis(FlexDirection::Row, 0.0);
   ASSERT_EQ(gapBetweenColumns, 0.0f);
 }
 
 TEST(Style, computed_margin_is_not_floored) {
   yoga::Style style;
-  style.setMargin(Edge::All, value::points(-1.0f));
+  style.setMargin(Edge::All, StyleLength::points(-1.0f));
   auto marginStart = style.computeInlineStartMargin(
       FlexDirection::Row, Direction::LTR, 0.0f /*widthSize*/);
   ASSERT_EQ(marginStart, -1.0f);

tests/StyleValuePoolTest.cpp

@@ -16,7 +16,7 @@ TEST(StyleValuePool, undefined_at_init) {
 
   EXPECT_TRUE(handle.isUndefined());
   EXPECT_FALSE(handle.isDefined());
-  EXPECT_EQ(pool.getLength(handle), value::undefined());
+  EXPECT_EQ(pool.getLength(handle), StyleLength::undefined());
   EXPECT_EQ(pool.getNumber(handle), FloatOptional{});
 }
 
@@ -25,63 +25,63 @@ TEST(StyleValuePool, auto_at_init) {
   auto handle = StyleValueHandle::ofAuto();
 
   EXPECT_TRUE(handle.isAuto());
-  EXPECT_EQ(pool.getLength(handle), value::ofAuto());
+  EXPECT_EQ(pool.getLength(handle), StyleLength::ofAuto());
 }
 
 TEST(StyleValuePool, store_small_int_points) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::points(10));
+  pool.store(handle, StyleLength::points(10));
 
-  EXPECT_EQ(pool.getLength(handle), value::points(10));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::points(10));
 }
 
 TEST(StyleValuePool, store_small_negative_int_points) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::points(-10));
+  pool.store(handle, StyleLength::points(-10));
 
-  EXPECT_EQ(pool.getLength(handle), value::points(-10));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::points(-10));
 }
 
 TEST(StyleValuePool, store_small_int_percent) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::percent(10));
+  pool.store(handle, StyleLength::percent(10));
 
-  EXPECT_EQ(pool.getLength(handle), value::percent(10));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::percent(10));
 }
 
 TEST(StyleValuePool, store_large_int_percent) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::percent(262144));
+  pool.store(handle, StyleLength::percent(262144));
 
-  EXPECT_EQ(pool.getLength(handle), value::percent(262144));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::percent(262144));
 }
 
 TEST(StyleValuePool, store_large_int_after_small_int) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::percent(10));
+  pool.store(handle, StyleLength::percent(10));
-  pool.store(handle, value::percent(262144));
+  pool.store(handle, StyleLength::percent(262144));
 
-  EXPECT_EQ(pool.getLength(handle), value::percent(262144));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::percent(262144));
 }
 
 TEST(StyleValuePool, store_small_int_after_large_int) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::percent(262144));
+  pool.store(handle, StyleLength::percent(262144));
-  pool.store(handle, value::percent(10));
+  pool.store(handle, StyleLength::percent(10));
 
-  EXPECT_EQ(pool.getLength(handle), value::percent(10));
+  EXPECT_EQ(pool.getLength(handle), StyleLength::percent(10));
 }
 
 TEST(StyleValuePool, store_small_int_number) {
@@ -97,35 +97,35 @@ TEST(StyleValuePool, store_undefined) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::undefined());
+  pool.store(handle, StyleLength::undefined());
 
   EXPECT_TRUE(handle.isUndefined());
   EXPECT_FALSE(handle.isDefined());
-  EXPECT_EQ(pool.getLength(handle), value::undefined());
+  EXPECT_EQ(pool.getLength(handle), StyleLength::undefined());
 }
 
 TEST(StyleValuePool, store_undefined_after_small_int) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::points(10));
+  pool.store(handle, StyleLength::points(10));
-  pool.store(handle, value::undefined());
+  pool.store(handle, StyleLength::undefined());
 
   EXPECT_TRUE(handle.isUndefined());
   EXPECT_FALSE(handle.isDefined());
-  EXPECT_EQ(pool.getLength(handle), value::undefined());
+  EXPECT_EQ(pool.getLength(handle), StyleLength::undefined());
 }
 
 TEST(StyleValuePool, store_undefined_after_large_int) {
   StyleValuePool pool;
   StyleValueHandle handle;
 
-  pool.store(handle, value::points(262144));
+  pool.store(handle, StyleLength::points(262144));
-  pool.store(handle, value::undefined());
+  pool.store(handle, StyleLength::undefined());
 
   EXPECT_TRUE(handle.isUndefined());
   EXPECT_FALSE(handle.isDefined());
-  EXPECT_EQ(pool.getLength(handle), value::undefined());
+  EXPECT_EQ(pool.getLength(handle), StyleLength::undefined());
 }
 
 } // namespace facebook::yoga

tests/generated/YGAutoTest.cpp

@@ -0,0 +1,311 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * clang-format off
+ * @generated SignedSource<<00e4ee58a2a66a3fcd064d3c517d8330>>
+ * generated by gentest/gentest-driver.ts from gentest/fixtures/YGAutoTest.html
+ */
+
+#include <gtest/gtest.h>
+#include <yoga/Yoga.h>
+#include "../util/TestUtil.h"
+
+TEST(YogaTest, auto_width) {
+  YGConfigRef config = YGConfigNew();
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
+  YGNodeStyleSetPositionType(root, YGPositionTypeAbsolute);
+  YGNodeStyleSetWidthAuto(root);
+  YGNodeStyleSetHeight(root, 50);
+
+  YGNodeRef root_child0 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child0, 50);
+  YGNodeStyleSetHeight(root_child0, 50);
+  YGNodeInsertChild(root, root_child0, 0);
+
+  YGNodeRef root_child1 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child1, 50);
+  YGNodeStyleSetHeight(root_child1, 50);
+  YGNodeInsertChild(root, root_child1, 1);
+
+  YGNodeRef root_child2 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child2, 50);
+  YGNodeStyleSetHeight(root_child2, 50);
+  YGNodeInsertChild(root, root_child2, 2);
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionRTL);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}
+
+TEST(YogaTest, auto_height) {
+  YGConfigRef config = YGConfigNew();
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetPositionType(root, YGPositionTypeAbsolute);
+  YGNodeStyleSetWidth(root, 50);
+  YGNodeStyleSetHeightAuto(root);
+
+  YGNodeRef root_child0 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child0, 50);
+  YGNodeStyleSetHeight(root_child0, 50);
+  YGNodeInsertChild(root, root_child0, 0);
+
+  YGNodeRef root_child1 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child1, 50);
+  YGNodeStyleSetHeight(root_child1, 50);
+  YGNodeInsertChild(root, root_child1, 1);
+
+  YGNodeRef root_child2 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child2, 50);
+  YGNodeStyleSetHeight(root_child2, 50);
+  YGNodeInsertChild(root, root_child2, 2);
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionRTL);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}
+
+TEST(YogaTest, auto_flex_basis) {
+  YGConfigRef config = YGConfigNew();
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetPositionType(root, YGPositionTypeAbsolute);
+  YGNodeStyleSetWidth(root, 50);
+
+  YGNodeRef root_child0 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child0, 50);
+  YGNodeStyleSetHeight(root_child0, 50);
+  YGNodeInsertChild(root, root_child0, 0);
+
+  YGNodeRef root_child1 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child1, 50);
+  YGNodeStyleSetHeight(root_child1, 50);
+  YGNodeInsertChild(root, root_child1, 1);
+
+  YGNodeRef root_child2 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root_child2, 50);
+  YGNodeStyleSetHeight(root_child2, 50);
+  YGNodeInsertChild(root, root_child2, 2);
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionRTL);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetTop(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child2));
+  ASSERT_FLOAT_EQ(100, YGNodeLayoutGetTop(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child2));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child2));
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}
+
+TEST(YogaTest, auto_position) {
+  YGConfigRef config = YGConfigNew();
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetPositionType(root, YGPositionTypeAbsolute);
+  YGNodeStyleSetWidth(root, 50);
+  YGNodeStyleSetHeight(root, 50);
+
+  YGNodeRef root_child0 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetPositionAuto(root_child0, YGEdgeRight);
+  YGNodeStyleSetWidth(root_child0, 25);
+  YGNodeStyleSetHeight(root_child0, 25);
+  YGNodeInsertChild(root, root_child0, 0);
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child0));
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionRTL);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child0));
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}
+
+TEST(YogaTest, auto_margin) {
+  YGConfigRef config = YGConfigNew();
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetPositionType(root, YGPositionTypeAbsolute);
+  YGNodeStyleSetWidth(root, 50);
+  YGNodeStyleSetHeight(root, 50);
+
+  YGNodeRef root_child0 = YGNodeNewWithConfig(config);
+  YGNodeStyleSetMarginAuto(root_child0, YGEdgeLeft);
+  YGNodeStyleSetWidth(root_child0, 25);
+  YGNodeStyleSetHeight(root_child0, 25);
+  YGNodeInsertChild(root, root_child0, 0);
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child0));
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionRTL);
+
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root));
+  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root));
+
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetLeft(root_child0));
+  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetWidth(root_child0));
+  ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child0));
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}

yoga/YGNodeStyle.cpp

@@ -177,18 +177,19 @@ float YGNodeStyleGetFlexShrink(const YGNodeConstRef nodeRef) {
 
 void YGNodeStyleSetFlexBasis(const YGNodeRef node, const float flexBasis) {
   updateStyle<&Style::flexBasis, &Style::setFlexBasis>(
-      node, value::points(flexBasis));
+      node, StyleLength::points(flexBasis));
 }
 
 void YGNodeStyleSetFlexBasisPercent(
     const YGNodeRef node,
     const float flexBasisPercent) {
   updateStyle<&Style::flexBasis, &Style::setFlexBasis>(
-      node, value::percent(flexBasisPercent));
+      node, StyleLength::percent(flexBasisPercent));
 }
 
 void YGNodeStyleSetFlexBasisAuto(const YGNodeRef node) {
-  updateStyle<&Style::flexBasis, &Style::setFlexBasis>(node, value::ofAuto());
+  updateStyle<&Style::flexBasis, &Style::setFlexBasis>(
+      node, StyleLength::ofAuto());
 }
 
 YGValue YGNodeStyleGetFlexBasis(const YGNodeConstRef node) {
@@ -197,17 +198,17 @@ YGValue YGNodeStyleGetFlexBasis(const YGNodeConstRef node) {
 
 void YGNodeStyleSetPosition(YGNodeRef node, YGEdge edge, float points) {
   updateStyle<&Style::position, &Style::setPosition>(
-      node, scopedEnum(edge), value::points(points));
+      node, scopedEnum(edge), StyleLength::points(points));
 }
 
 void YGNodeStyleSetPositionPercent(YGNodeRef node, YGEdge edge, float percent) {
   updateStyle<&Style::position, &Style::setPosition>(
-      node, scopedEnum(edge), value::percent(percent));
+      node, scopedEnum(edge), StyleLength::percent(percent));
 }
 
 void YGNodeStyleSetPositionAuto(YGNodeRef node, YGEdge edge) {
   updateStyle<&Style::position, &Style::setPosition>(
-      node, scopedEnum(edge), value::ofAuto());
+      node, scopedEnum(edge), StyleLength::ofAuto());
 }
 
 YGValue YGNodeStyleGetPosition(YGNodeConstRef node, YGEdge edge) {
@@ -216,17 +217,17 @@ YGValue YGNodeStyleGetPosition(YGNodeConstRef node, YGEdge edge) {
 
 void YGNodeStyleSetMargin(YGNodeRef node, YGEdge edge, float points) {
   updateStyle<&Style::margin, &Style::setMargin>(
-      node, scopedEnum(edge), value::points(points));
+      node, scopedEnum(edge), StyleLength::points(points));
 }
 
 void YGNodeStyleSetMarginPercent(YGNodeRef node, YGEdge edge, float percent) {
   updateStyle<&Style::margin, &Style::setMargin>(
-      node, scopedEnum(edge), value::percent(percent));
+      node, scopedEnum(edge), StyleLength::percent(percent));
 }
 
 void YGNodeStyleSetMarginAuto(YGNodeRef node, YGEdge edge) {
   updateStyle<&Style::margin, &Style::setMargin>(
-      node, scopedEnum(edge), value::ofAuto());
+      node, scopedEnum(edge), StyleLength::ofAuto());
 }
 
 YGValue YGNodeStyleGetMargin(YGNodeConstRef node, YGEdge edge) {
@@ -235,12 +236,12 @@ YGValue YGNodeStyleGetMargin(YGNodeConstRef node, YGEdge edge) {
 
 void YGNodeStyleSetPadding(YGNodeRef node, YGEdge edge, float points) {
   updateStyle<&Style::padding, &Style::setPadding>(
-      node, scopedEnum(edge), value::points(points));
+      node, scopedEnum(edge), StyleLength::points(points));
 }
 
 void YGNodeStyleSetPaddingPercent(YGNodeRef node, YGEdge edge, float percent) {
   updateStyle<&Style::padding, &Style::setPadding>(
-      node, scopedEnum(edge), value::percent(percent));
+      node, scopedEnum(edge), StyleLength::percent(percent));
 }
 
 YGValue YGNodeStyleGetPadding(YGNodeConstRef node, YGEdge edge) {
@@ -252,7 +253,7 @@ void YGNodeStyleSetBorder(
     const YGEdge edge,
     const float border) {
   updateStyle<&Style::border, &Style::setBorder>(
-      node, scopedEnum(edge), value::points(border));
+      node, scopedEnum(edge), StyleLength::points(border));
 }
 
 float YGNodeStyleGetBorder(const YGNodeConstRef node, const YGEdge edge) {
@@ -269,12 +270,12 @@ void YGNodeStyleSetGap(
     const YGGutter gutter,
     const float gapLength) {
   updateStyle<&Style::gap, &Style::setGap>(
-      node, scopedEnum(gutter), value::points(gapLength));
+      node, scopedEnum(gutter), StyleLength::points(gapLength));
 }
 
 void YGNodeStyleSetGapPercent(YGNodeRef node, YGGutter gutter, float percent) {
   updateStyle<&Style::gap, &Style::setGap>(
-      node, scopedEnum(gutter), value::percent(percent));
+      node, scopedEnum(gutter), StyleLength::percent(percent));
 }
 
 float YGNodeStyleGetGap(const YGNodeConstRef node, const YGGutter gutter) {
@@ -307,17 +308,17 @@ YGBoxSizing YGNodeStyleGetBoxSizing(const YGNodeConstRef node) {
 
 void YGNodeStyleSetWidth(YGNodeRef node, float points) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Width, value::points(points));
+      node, Dimension::Width, StyleLength::points(points));
 }
 
 void YGNodeStyleSetWidthPercent(YGNodeRef node, float percent) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Width, value::percent(percent));
+      node, Dimension::Width, StyleLength::percent(percent));
 }
 
 void YGNodeStyleSetWidthAuto(YGNodeRef node) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Width, value::ofAuto());
+      node, Dimension::Width, StyleLength::ofAuto());
 }
 
 YGValue YGNodeStyleGetWidth(YGNodeConstRef node) {
@@ -326,17 +327,17 @@ YGValue YGNodeStyleGetWidth(YGNodeConstRef node) {
 
 void YGNodeStyleSetHeight(YGNodeRef node, float points) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Height, value::points(points));
+      node, Dimension::Height, StyleLength::points(points));
 }
 
 void YGNodeStyleSetHeightPercent(YGNodeRef node, float percent) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Height, value::percent(percent));
+      node, Dimension::Height, StyleLength::percent(percent));
 }
 
 void YGNodeStyleSetHeightAuto(YGNodeRef node) {
   updateStyle<&Style::dimension, &Style::setDimension>(
-      node, Dimension::Height, value::ofAuto());
+      node, Dimension::Height, StyleLength::ofAuto());
 }
 
 YGValue YGNodeStyleGetHeight(YGNodeConstRef node) {
@@ -345,12 +346,12 @@ YGValue YGNodeStyleGetHeight(YGNodeConstRef node) {
 
 void YGNodeStyleSetMinWidth(const YGNodeRef node, const float minWidth) {
   updateStyle<&Style::minDimension, &Style::setMinDimension>(
-      node, Dimension::Width, value::points(minWidth));
+      node, Dimension::Width, StyleLength::points(minWidth));
 }
 
 void YGNodeStyleSetMinWidthPercent(const YGNodeRef node, const float minWidth) {
   updateStyle<&Style::minDimension, &Style::setMinDimension>(
-      node, Dimension::Width, value::percent(minWidth));
+      node, Dimension::Width, StyleLength::percent(minWidth));
 }
 
 YGValue YGNodeStyleGetMinWidth(const YGNodeConstRef node) {
@@ -359,14 +360,14 @@ YGValue YGNodeStyleGetMinWidth(const YGNodeConstRef node) {
 
 void YGNodeStyleSetMinHeight(const YGNodeRef node, const float minHeight) {
   updateStyle<&Style::minDimension, &Style::setMinDimension>(
-      node, Dimension::Height, value::points(minHeight));
+      node, Dimension::Height, StyleLength::points(minHeight));
 }
 
 void YGNodeStyleSetMinHeightPercent(
     const YGNodeRef node,
     const float minHeight) {
   updateStyle<&Style::minDimension, &Style::setMinDimension>(
-      node, Dimension::Height, value::percent(minHeight));
+      node, Dimension::Height, StyleLength::percent(minHeight));
 }
 
 YGValue YGNodeStyleGetMinHeight(const YGNodeConstRef node) {
@@ -375,12 +376,12 @@ YGValue YGNodeStyleGetMinHeight(const YGNodeConstRef node) {
 
 void YGNodeStyleSetMaxWidth(const YGNodeRef node, const float maxWidth) {
   updateStyle<&Style::maxDimension, &Style::setMaxDimension>(
-      node, Dimension::Width, value::points(maxWidth));
+      node, Dimension::Width, StyleLength::points(maxWidth));
 }
 
 void YGNodeStyleSetMaxWidthPercent(const YGNodeRef node, const float maxWidth) {
   updateStyle<&Style::maxDimension, &Style::setMaxDimension>(
-      node, Dimension::Width, value::percent(maxWidth));
+      node, Dimension::Width, StyleLength::percent(maxWidth));
 }
 
 YGValue YGNodeStyleGetMaxWidth(const YGNodeConstRef node) {
@@ -389,14 +390,14 @@ YGValue YGNodeStyleGetMaxWidth(const YGNodeConstRef node) {
 
 void YGNodeStyleSetMaxHeight(const YGNodeRef node, const float maxHeight) {
   updateStyle<&Style::maxDimension, &Style::setMaxDimension>(
-      node, Dimension::Height, value::points(maxHeight));
+      node, Dimension::Height, StyleLength::points(maxHeight));
 }
 
 void YGNodeStyleSetMaxHeightPercent(
     const YGNodeRef node,
     const float maxHeight) {
   updateStyle<&Style::maxDimension, &Style::setMaxDimension>(
-      node, Dimension::Height, value::percent(maxHeight));
+      node, Dimension::Height, StyleLength::percent(maxHeight));
 }
 
 YGValue YGNodeStyleGetMaxHeight(const YGNodeConstRef node) {

yoga/node/Node.cpp

@@ -288,9 +288,10 @@ Style::Length Node::processFlexBasis() const {
     return flexBasis;
   }
   if (style_.flex().isDefined() && style_.flex().unwrap() > 0.0f) {
-    return config_->useWebDefaults() ? value::ofAuto() : value::points(0);
+    return config_->useWebDefaults() ? StyleLength::ofAuto()
+                                     : StyleLength::points(0);
   }
-  return value::ofAuto();
+  return StyleLength::ofAuto();
 }
 
 FloatOptional Node::resolveFlexBasis(

yoga/node/Node.h

@@ -302,7 +302,7 @@ class YG_EXPORT Node : public ::YGNode {
   std::vector<Node*> children_;
   const Config* config_;
   std::array<Style::Length, 2> processedDimensions_{
-      {value::undefined(), value::undefined()}};
+      {StyleLength::undefined(), StyleLength::undefined()}};
 };
 
 inline Node* resolveRef(const YGNodeRef ref) {

yoga/style/StyleLength.h

@@ -104,36 +104,4 @@ inline bool inexactEquals(const StyleLength& a, const StyleLength& b) {
   return a.unit() == b.unit() && inexactEquals(a.value(), b.value());
 }
 
-namespace value {
-
-/**
- * Canonical unit (one YGUnitPoint)
- */
-constexpr StyleLength points(float value) {
-  return StyleLength::points(value);
-}
-
-/**
- * Percent of reference
- */
-constexpr StyleLength percent(float value) {
-  return StyleLength::percent(value);
-}
-
-/**
- * "auto" keyword
- */
-constexpr StyleLength ofAuto() {
-  return StyleLength::ofAuto();
-}
-
-/**
- * Undefined
- */
-constexpr StyleLength undefined() {
-  return StyleLength::undefined();
-}
-
-} // namespace value
-
 } // namespace facebook::yoga

yoga/style/StyleValuePool.h

@@ -49,9 +49,9 @@ class StyleValuePool {
 
   StyleLength getLength(StyleValueHandle handle) const {
     if (handle.isUndefined()) {
-      return value::undefined();
+      return StyleLength::undefined();
     } else if (handle.isAuto()) {
-      return value::ofAuto();
+      return StyleLength::ofAuto();
     } else {
       assert(
           handle.type() == StyleValueHandle::Type::Point ||
@@ -61,8 +61,8 @@ class StyleValuePool {
           : unpackInlineInteger(handle.value());
 
       return handle.type() == StyleValueHandle::Type::Point
-          ? value::points(value)
+          ? StyleLength::points(value)
-          : value::percent(value);
+          : StyleLength::percent(value);
     }
   }