Fabric: Devirtualizing of props parsing infra

Summary:
This diff contains several tight to each other changes (which can/should not be split into several diffs):
 * The props parsing/conversion process was de-virtualized: we don't use virtual `apply` method to parse props anymore. Instead, we use old-fashioned constructors.
 * All fields of Props classes which represent props values were marked as `const` which make impossible to modify them after the objects were created (even if we have non-const value-of/pointer-to the whole Props object). Those fields are also `public` now.
 * All custom handwritten getters were removed (because we don't need them anymore).

So, now we don't need all those custom getters which makes code much more compact, performant and codegen-friendly.

Reviewed By: fkgozali

Differential Revision: D7901245

fbshipit-source-id: 9f4b1fd2da64bf963b63215ed3bd74b9d3c58dd5

React/Fabric/Mounting/RCTParagraphComponentView.mm

@@ -39,7 +39,7 @@ using namespace facebook::react;
   [super updateProps:props oldProps:oldProps];
   auto paragraphProps = std::static_pointer_cast<const ParagraphProps>(props);
   assert(paragraphProps);
-  _paragraphAttributes = paragraphProps->getParagraphAttributes();
+  _paragraphAttributes = paragraphProps->paragraphAttributes;
 }
 
 - (void)updateLocalData:(SharedLocalData)localData

React/Fabric/Mounting/RCTViewComponentView.mm

@@ -24,8 +24,8 @@ using namespace facebook::react;
   auto oldViewProps = *std::dynamic_pointer_cast<const ViewProps>(oldProps);
   auto newViewProps = *std::dynamic_pointer_cast<const ViewProps>(props);
 
-  if (oldViewProps.getBackgroundColor() != newViewProps.getBackgroundColor()) {
+  if (oldViewProps.backgroundColor != newViewProps.backgroundColor) {
-    self.backgroundColor = [UIColor colorWithCGColor:newViewProps.getBackgroundColor().get()];
+    self.backgroundColor = [UIColor colorWithCGColor:newViewProps.backgroundColor.get()];
   }
 
   // TODO: Implement all sutable non-layout <View> props.

ReactCommon/fabric/core/shadownode/ConcreteShadowNode.h

@@ -28,22 +28,12 @@ public:
   using SharedConcreteProps = std::shared_ptr<const PropsT>;
   using SharedConcreteShadowNode = std::shared_ptr<const ConcreteShadowNode>;
 
-  static const SharedConcreteProps Props(const RawProps &rawProps, const SharedProps &baseProps = nullptr) {
+  static SharedConcreteProps Props(const RawProps &rawProps, const SharedProps &baseProps = nullptr) {
-    if (!baseProps) {
+    return std::make_shared<const PropsT>(baseProps ? *std::static_pointer_cast<const PropsT>(baseProps) : PropsT(), rawProps);
-      auto props = std::make_shared<PropsT>();
-      props->apply(rawProps);
-      return props;
-    }
-
-    auto concreteBaseProps = std::dynamic_pointer_cast<const PropsT>(baseProps);
-    assert(concreteBaseProps);
-    auto props = std::make_shared<PropsT>(*concreteBaseProps);
-    props->apply(rawProps);
-    return props;
   }
 
-  static const SharedConcreteProps defaultSharedProps() {
+  static SharedConcreteProps defaultSharedProps() {
-    static const SharedConcreteProps defaultSharedProps = std::make_shared<PropsT>();
+    static const SharedConcreteProps defaultSharedProps = std::make_shared<const PropsT>();
     return defaultSharedProps;
   }
 

ReactCommon/fabric/core/shadownode/Props.cpp

@@ -13,15 +13,8 @@
 namespace facebook {
 namespace react {
 
-void Props::apply(const RawProps &rawProps) {
+Props::Props(const Props &sourceProps, const RawProps &rawProps):
-  ensureUnsealed();
+  nativeId(convertRawProp(rawProps, "nativeID", sourceProps.nativeId)) {};
-
-  applyRawProp(rawProps, "nativeID", nativeId_);
-}
-
-const std::string &Props::getNativeId() const {
-  return nativeId_;
-}
 
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/core/shadownode/Props.h

@@ -28,12 +28,10 @@ class Props:
   public virtual DebugStringConvertible {
 
 public:
-  virtual void apply(const RawProps &rawProps);
+  Props() = default;
+  Props(const Props &sourceProps, const RawProps &rawProps);
 
-  const std::string &getNativeId() const;
+  const std::string nativeId;
-
-private:
-  std::string nativeId_ {""};
 };
 
 } // namespace react

ReactCommon/fabric/core/shadownode/propsConversions.h

@@ -20,33 +20,37 @@ inline int intFromDynamic(const folly::dynamic &value) { return value.getInt();
 inline Float floatFromDynamic(const folly::dynamic &value) { return value.getDouble(); }
 inline std::string stringFromDynamic(const folly::dynamic &value) { return value.getString(); }
 
-#define APPLY_RAW_PROP_TEMPLATE(type, converter) \
+#define CONVERT_RAW_PROP_TEMPLATE(type, converter) \
-inline static void applyRawProp(const RawProps &rawProps, const std::string &name, type &property) { \
+inline static type convertRawProp(const RawProps &rawProps, const std::string &name, const type &defaultValue) { \
   auto &&iterator = rawProps.find(name); \
   if (iterator != rawProps.end()) { \
-    property = converter(iterator->second); \
+    return converter(iterator->second); \
+  } else { \
+    return defaultValue; \
   } \
 } \
 \
-inline static void applyRawProp(const RawProps &rawProps, const std::string &name, folly::Optional<type> &property) { \
+inline static folly::Optional<type> convertRawProp(const RawProps &rawProps, const std::string &name, const folly::Optional<type> &defaultValue) { \
   auto &&iterator = rawProps.find(name); \
   if (iterator != rawProps.end()) { \
     auto &&value = iterator->second; \
     if (value.isNull()) { \
-      property = {}; \
+      return {}; \
     } else { \
-      property = converter(value); \
+      return converter(value); \
     } \
+  } else { \
+    return defaultValue; \
   } \
 }
 
-APPLY_RAW_PROP_TEMPLATE(bool, boolFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(bool, boolFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(int, intFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(int, intFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(Float, floatFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(Float, floatFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(std::string, stringFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(std::string, stringFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(SharedColor, colorFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(SharedColor, colorFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(Point, pointFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(Point, pointFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(Size, sizeFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(Size, sizeFromDynamic)
 
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/core/tests/ComponentDescriptorTest.cpp

@@ -26,7 +26,7 @@ TEST(ComponentDescriptorTest, createShadowNode) {
   ASSERT_STREQ(node->getComponentName().c_str(), "Test");
   ASSERT_EQ(node->getTag(), 9);
   ASSERT_EQ(node->getRootTag(), 1);
-  ASSERT_STREQ(node->getProps()->getNativeId().c_str(), "abc");
+  ASSERT_STREQ(node->getProps()->nativeId.c_str(), "abc");
 }
 
 TEST(ComponentDescriptorTest, cloneShadowNode) {
@@ -42,7 +42,7 @@ TEST(ComponentDescriptorTest, cloneShadowNode) {
   ASSERT_STREQ(cloned->getComponentName().c_str(), "Test");
   ASSERT_EQ(cloned->getTag(), 9);
   ASSERT_EQ(cloned->getRootTag(), 1);
-  ASSERT_STREQ(cloned->getProps()->getNativeId().c_str(), "abc");
+  ASSERT_STREQ(cloned->getProps()->nativeId.c_str(), "abc");
 }
 
 TEST(ComponentDescriptorTest, appendChild) {

ReactCommon/fabric/core/tests/ShadowNodeTest.cpp

@@ -19,13 +19,12 @@ TEST(ShadowNodeTest, handleProps) {
   RawProps raw;
   raw["nativeID"] = "abc";
 
-  auto props = std::make_shared<Props>();
+  auto props = std::make_shared<Props>(Props(), raw);
-  props->apply(raw);
 
   // Props are not sealed after applying raw props.
   ASSERT_FALSE(props->getSealed());
 
-  ASSERT_STREQ(props->getNativeId().c_str(), "abc");
+  ASSERT_STREQ(props->nativeId.c_str(), "abc");
 }
 
 TEST(ShadowNodeTest, handleShadowNodeCreation) {
@@ -41,7 +40,7 @@ TEST(ShadowNodeTest, handleShadowNodeCreation) {
   ASSERT_EQ(node->getSourceNode(), nullptr);
   ASSERT_EQ(node->getChildren()->size(), 0);
 
-  ASSERT_STREQ(node->getProps()->getNativeId().c_str(), "testNativeID");
+  ASSERT_STREQ(node->getProps()->nativeId.c_str(), "testNativeID");
 
   node->sealRecursive();
   ASSERT_TRUE(node->getSealed());

ReactCommon/fabric/core/tests/TestComponent.h

@@ -13,6 +13,7 @@
 #include <fabric/core/ConcreteShadowNode.h>
 #include <fabric/core/LocalData.h>
 #include <fabric/core/ShadowNode.h>
+#include <folly/dynamic.h>
 
 using namespace facebook::react;
 
@@ -37,11 +38,9 @@ private:
 
 class TestProps : public Props {
 public:
-  TestProps() {
+  using Props::Props;
-    RawProps raw;
+  TestProps():
-    raw["nativeID"] = "testNativeID";
+    Props(Props(), {{"nativeID", "testNativeID"}}) {}
-    apply(raw);
-  }
 };
 using SharedTestProps = std::shared_ptr<const TestProps>;
 

ReactCommon/fabric/text/basetext/BaseTextProps.cpp

@@ -16,52 +16,53 @@
 namespace facebook {
 namespace react {
 
-void BaseTextProps::apply(const RawProps &rawProps) {
+static TextAttributes convertRawProp(const RawProps &rawProps, const TextAttributes defaultTextAttributes) {
+  TextAttributes textAttributes;
+
   // Color
-  applyRawProp(rawProps, "color", textAttributes_.foregroundColor);
+  textAttributes.foregroundColor = convertRawProp(rawProps, "color", defaultTextAttributes.foregroundColor);
-  applyRawProp(rawProps, "backgroundColor", textAttributes_.backgroundColor);
+  textAttributes.backgroundColor = convertRawProp(rawProps, "backgroundColor", defaultTextAttributes.backgroundColor);
-  applyRawProp(rawProps, "opacity", textAttributes_.opacity);
+  textAttributes.opacity = convertRawProp(rawProps, "opacity", defaultTextAttributes.opacity);
 
   // Font
-  applyRawProp(rawProps, "fontFamily", textAttributes_.fontFamily);
+  textAttributes.fontFamily = convertRawProp(rawProps, "fontFamily", defaultTextAttributes.fontFamily);
-  applyRawProp(rawProps, "fontSize", textAttributes_.fontSize);
+  textAttributes.fontSize = convertRawProp(rawProps, "fontSize", defaultTextAttributes.fontSize);
-  applyRawProp(rawProps, "fontSizeMultiplier", textAttributes_.fontSizeMultiplier);
+  textAttributes.fontSizeMultiplier = convertRawProp(rawProps, "fontSizeMultiplier", defaultTextAttributes.fontSizeMultiplier);
-  applyRawProp(rawProps, "fontWeight", textAttributes_.fontWeight);
+  textAttributes.fontWeight = convertRawProp(rawProps, "fontWeight", defaultTextAttributes.fontWeight);
-  applyRawProp(rawProps, "fontStyle", textAttributes_.fontStyle);
+  textAttributes.fontStyle = convertRawProp(rawProps, "fontStyle", defaultTextAttributes.fontStyle);
-  applyRawProp(rawProps, "fontVariant", textAttributes_.fontVariant);
+  textAttributes.fontVariant = convertRawProp(rawProps, "fontVariant", defaultTextAttributes.fontVariant);
-  applyRawProp(rawProps, "allowFontScaling", textAttributes_.allowFontScaling);
+  textAttributes.allowFontScaling = convertRawProp(rawProps, "allowFontScaling", defaultTextAttributes.allowFontScaling);
-  applyRawProp(rawProps, "letterSpacing", textAttributes_.letterSpacing);
+  textAttributes.letterSpacing = convertRawProp(rawProps, "letterSpacing", defaultTextAttributes.letterSpacing);
 
   // Paragraph
-  applyRawProp(rawProps, "lineHeight", textAttributes_.lineHeight);
+  textAttributes.lineHeight = convertRawProp(rawProps, "lineHeight", defaultTextAttributes.lineHeight);
-  applyRawProp(rawProps, "alignment", textAttributes_.alignment);
+  textAttributes.alignment = convertRawProp(rawProps, "alignment", defaultTextAttributes.alignment);
-  applyRawProp(rawProps, "baseWritingDirection", textAttributes_.baseWritingDirection);
+  textAttributes.baseWritingDirection = convertRawProp(rawProps, "baseWritingDirection", defaultTextAttributes.baseWritingDirection);
 
   // Decoration
-  applyRawProp(rawProps, "textDecorationColor", textAttributes_.textDecorationColor);
+  textAttributes.textDecorationColor = convertRawProp(rawProps, "textDecorationColor", defaultTextAttributes.textDecorationColor);
-  applyRawProp(rawProps, "textDecorationLineType", textAttributes_.textDecorationLineType);
+  textAttributes.textDecorationLineType = convertRawProp(rawProps, "textDecorationLineType", defaultTextAttributes.textDecorationLineType);
-  applyRawProp(rawProps, "textDecorationLineStyle", textAttributes_.textDecorationLineStyle);
+  textAttributes.textDecorationLineStyle = convertRawProp(rawProps, "textDecorationLineStyle", defaultTextAttributes.textDecorationLineStyle);
-  applyRawProp(rawProps, "textDecorationLinePattern", textAttributes_.textDecorationLinePattern);
+  textAttributes.textDecorationLinePattern = convertRawProp(rawProps, "textDecorationLinePattern", defaultTextAttributes.textDecorationLinePattern);
 
   // Shadow
-  applyRawProp(rawProps, "textShadowOffset", textAttributes_.textShadowOffset);
+  textAttributes.textShadowOffset = convertRawProp(rawProps, "textShadowOffset", defaultTextAttributes.textShadowOffset);
-  applyRawProp(rawProps, "textShadowRadius", textAttributes_.textShadowRadius);
+  textAttributes.textShadowRadius = convertRawProp(rawProps, "textShadowRadius", defaultTextAttributes.textShadowRadius);
-  applyRawProp(rawProps, "textShadowColor", textAttributes_.textShadowColor);
+  textAttributes.textShadowColor = convertRawProp(rawProps, "textShadowColor", defaultTextAttributes.textShadowColor);
 
   // Special
-  applyRawProp(rawProps, "isHighlighted", textAttributes_.isHighlighted);
+  textAttributes.isHighlighted = convertRawProp(rawProps, "isHighlighted", defaultTextAttributes.isHighlighted);
+
+  return textAttributes;
 }
 
-#pragma mark - Getters
+BaseTextProps::BaseTextProps(const BaseTextProps &sourceProps, const RawProps &rawProps):
-
+  textAttributes(convertRawProp(rawProps, sourceProps.textAttributes)) {};
-TextAttributes BaseTextProps::getTextAttributes() const {
-  return textAttributes_;
-}
 
 #pragma mark - DebugStringConvertible
 
 SharedDebugStringConvertibleList BaseTextProps::getDebugProps() const {
-  return textAttributes_.getDebugProps();
+  return textAttributes.getDebugProps();
 }
 
 } // namespace react

ReactCommon/fabric/text/basetext/BaseTextProps.h

@@ -22,27 +22,17 @@ namespace react {
 class BaseTextProps {
 public:
 
-  /*
+  BaseTextProps() = default;
-   * Same semantic as `Props::apply(...)`.
+  BaseTextProps(const BaseTextProps &sourceProps, const RawProps &rawProps);
-   */
-  void apply(const RawProps &rawProps);
 
-#pragma mark - Getters
+#pragma mark - Props
 
-  /*
+  const TextAttributes textAttributes {};
-   * Returns all props values as `TextAttributes` object.
-   */
-  TextAttributes getTextAttributes() const;
 
 #pragma mark - DebugStringConvertible (partially)
 
   SharedDebugStringConvertibleList getDebugProps() const;
-
-private:
-
-  TextAttributes textAttributes_;
 };
 
 } // namespace react
 } // namespace facebook
-

ReactCommon/fabric/text/basetext/BaseTextShadowNode.cpp

@@ -30,7 +30,7 @@ AttributedString BaseTextShadowNode::getAttributedString(
     SharedRawTextShadowNode rawTextShadowNode = std::dynamic_pointer_cast<const RawTextShadowNode>(childNode);
     if (rawTextShadowNode) {
       AttributedString::Fragment fragment;
-      fragment.string = rawTextShadowNode->getProps()->getText();
+      fragment.string = rawTextShadowNode->getProps()->text;
       fragment.textAttributes = textAttributes;
       attributedString.appendFragment(fragment);
       continue;
@@ -40,7 +40,7 @@ AttributedString BaseTextShadowNode::getAttributedString(
     SharedTextShadowNode textShadowNode = std::dynamic_pointer_cast<const TextShadowNode>(childNode);
     if (textShadowNode) {
       TextAttributes localTextAttributes = textAttributes;
-      localTextAttributes.apply(textShadowNode->getProps()->getTextAttributes());
+      localTextAttributes.apply(textShadowNode->getProps()->textAttributes);
       attributedString.appendAttributedString(textShadowNode->getAttributedString(localTextAttributes, textShadowNode->getChildren()));
       continue;
     }

ReactCommon/fabric/text/paragraph/ParagraphProps.cpp

@@ -15,38 +15,34 @@
 namespace facebook {
 namespace react {
 
-void ParagraphProps::apply(const RawProps &rawProps) {
+static ParagraphAttributes convertRawProp(const RawProps &rawProps, const ParagraphAttributes &defaultParagraphAttributes) {
-  ViewProps::apply(rawProps);
+  ParagraphAttributes paragraphAttributes;
-  BaseTextProps::apply(rawProps);
 
-  // Paragraph Attributes
+  paragraphAttributes.maximumNumberOfLines = convertRawProp(rawProps, "numberOfLines", defaultParagraphAttributes.maximumNumberOfLines);
-  applyRawProp(rawProps, "numberOfLines", paragraphAttributes_.maximumNumberOfLines);
+  paragraphAttributes.ellipsizeMode = convertRawProp(rawProps, "ellipsizeMode", defaultParagraphAttributes.ellipsizeMode);
-  applyRawProp(rawProps, "ellipsizeMode", paragraphAttributes_.ellipsizeMode);
+  paragraphAttributes.adjustsFontSizeToFit = convertRawProp(rawProps, "adjustsFontSizeToFit", defaultParagraphAttributes.adjustsFontSizeToFit);
-  applyRawProp(rawProps, "adjustsFontSizeToFit", paragraphAttributes_.adjustsFontSizeToFit);
+  paragraphAttributes.minimumFontSize = convertRawProp(rawProps, "minimumFontSize", defaultParagraphAttributes.minimumFontSize);
-  applyRawProp(rawProps, "minimumFontSize", paragraphAttributes_.minimumFontSize);
+  paragraphAttributes.maximumFontSize = convertRawProp(rawProps, "maximumFontSize", defaultParagraphAttributes.maximumFontSize);
-  applyRawProp(rawProps, "maximumFontSize", paragraphAttributes_.maximumFontSize);
 
-  // Other Props
+  return paragraphAttributes;
-  applyRawProp(rawProps, "selectable", isSelectable_);
 }
 
-#pragma mark - Getters
+ParagraphProps::ParagraphProps(const ParagraphProps &sourceProps, const RawProps &rawProps):
-
+  ViewProps(sourceProps, rawProps),
-ParagraphAttributes ParagraphProps::getParagraphAttributes() const {
+  BaseTextProps(sourceProps, rawProps),
-  return paragraphAttributes_;
+  paragraphAttributes(convertRawProp(rawProps, sourceProps.paragraphAttributes)),
-}
+  isSelectable(convertRawProp(rawProps, "selectable", sourceProps.isSelectable)) {};
-
-bool ParagraphProps::getIsSelectable() const {
-  return isSelectable_;
-}
 
 #pragma mark - DebugStringConvertible
 
 SharedDebugStringConvertibleList ParagraphProps::getDebugProps() const {
   return
     ViewProps::getDebugProps() +
-    paragraphAttributes_.getDebugProps() +
+    BaseTextProps::getDebugProps() +
-    BaseTextProps::getDebugProps();
+    paragraphAttributes.getDebugProps() +
+    SharedDebugStringConvertibleList {
+      debugStringConvertibleItem("isSelectable", isSelectable)
+    };
 }
 
 } // namespace react

ReactCommon/fabric/text/paragraph/ParagraphProps.h

@@ -32,30 +32,25 @@ class ParagraphProps:
   public BaseTextProps {
 
 public:
+  ParagraphProps() = default;
+  ParagraphProps(const ParagraphProps &sourceProps, const RawProps &rawProps);
 
-  void apply(const RawProps &rawProps) override;
+#pragma mark - Props
-
-#pragma mark - Getters
 
   /*
-   * Returns `ParagraphAttributes` object which has all prop values that affect
+   * Contains all prop values that affect visual representation of the paragraph.
-   * visual representation of the paragraph.
    */
-  ParagraphAttributes getParagraphAttributes() const;
+  const ParagraphAttributes paragraphAttributes {};
 
   /*
    * Defines can the text be selected (and copied) or not.
    */
-  bool getIsSelectable() const;
+  const bool isSelectable {false};
 
 #pragma mark - DebugStringConvertible
 
   SharedDebugStringConvertibleList getDebugProps() const override;
 
-private:
-
-  ParagraphAttributes paragraphAttributes_ {};
-  bool isSelectable_ {false};
 };
 
 } // namespace react

ReactCommon/fabric/text/paragraph/ParagraphShadowNode.cpp

@@ -19,7 +19,7 @@ ComponentName ParagraphShadowNode::getComponentName() const {
 }
 
 AttributedString ParagraphShadowNode::getAttributedString() const {
-  return BaseTextShadowNode::getAttributedString(getProps()->getTextAttributes(), getChildren());
+  return BaseTextShadowNode::getAttributedString(getProps()->textAttributes, getChildren());
 }
 
 void ParagraphShadowNode::setTextLayoutManager(SharedTextLayoutManager textLayoutManager) {
@@ -41,7 +41,7 @@ void ParagraphShadowNode::updateLocalData() {
 Size ParagraphShadowNode::measure(LayoutConstraints layoutConstraints) const {
   return textLayoutManager_->measure(
     getAttributedString(),
-    getProps()->getParagraphAttributes(),
+    getProps()->paragraphAttributes,
     layoutConstraints
   );
 }

ReactCommon/fabric/text/propsConversions.h

@@ -15,15 +15,15 @@
 namespace facebook {
 namespace react {
 
-APPLY_RAW_PROP_TEMPLATE(EllipsizeMode, ellipsizeModeFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(EllipsizeMode, ellipsizeModeFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(FontWeight, fontWeightFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(FontWeight, fontWeightFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(FontStyle, fontStyleFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(FontStyle, fontStyleFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(FontVariant, fontVariantFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(FontVariant, fontVariantFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(WritingDirection, writingDirectionFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(WritingDirection, writingDirectionFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(TextAlignment, textAlignmentFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(TextAlignment, textAlignmentFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(TextDecorationLineType, textDecorationLineTypeFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(TextDecorationLineType, textDecorationLineTypeFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(TextDecorationLineStyle, textDecorationLineStyleFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(TextDecorationLineStyle, textDecorationLineStyleFromDynamic)
-APPLY_RAW_PROP_TEMPLATE(TextDecorationLinePattern, textDecorationLinePatternFromDynamic)
+CONVERT_RAW_PROP_TEMPLATE(TextDecorationLinePattern, textDecorationLinePatternFromDynamic)
 
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/text/rawtext/RawTextProps.cpp

@@ -9,28 +9,21 @@
 
 #include <fabric/core/propsConversions.h>
 #include <fabric/debug/DebugStringConvertibleItem.h>
+#include <fabric/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
-void RawTextProps::apply(const RawProps &rawProps) {
+RawTextProps::RawTextProps(const RawTextProps &sourceProps, const RawProps &rawProps):
-  Props::apply(rawProps);
+  Props(sourceProps, rawProps),
-
+  text(convertRawProp(rawProps, "text", sourceProps.text)) {};
-  applyRawProp(rawProps, "text", text_);
-}
-
-#pragma mark - Getters
-
-std::string RawTextProps::getText() const {
-  return text_;
-}
 
 #pragma mark - DebugStringConvertible
 
 SharedDebugStringConvertibleList RawTextProps::getDebugProps() const {
-  SharedDebugStringConvertibleList list = {};
+  return {
-  list.push_back(std::make_shared<DebugStringConvertibleItem>("text", text_));
+    debugStringConvertibleItem("text", text)
-  return list;
+  };
 }
 
 } // namespace react

ReactCommon/fabric/text/rawtext/RawTextProps.h

@@ -24,19 +24,16 @@ class RawTextProps:
 
 public:
 
-  void apply(const RawProps &rawProps) override;
+  RawTextProps() = default;
+  RawTextProps(const RawTextProps &sourceProps, const RawProps &rawProps);
 
-#pragma mark - Getters
+#pragma mark - Props
 
-  std::string getText() const;
+  const std::string text {""};
 
 #pragma mark - DebugStringConvertible
 
   SharedDebugStringConvertibleList getDebugProps() const override;
-
-private:
-
-  std::string text_ {""};
 };
 
 } // namespace react

ReactCommon/fabric/text/text/TextProps.cpp

@@ -16,10 +16,8 @@
 namespace facebook {
 namespace react {
 
-void TextProps::apply(const RawProps &rawProps) {
+TextProps::TextProps(const TextProps &sourceProps, const RawProps &rawProps):
-  Props::apply(rawProps);
+  BaseTextProps::BaseTextProps(sourceProps, rawProps) {};
-  BaseTextProps::apply(rawProps);
-}
 
 #pragma mark - DebugStringConvertible
 

ReactCommon/fabric/text/text/TextProps.h

@@ -25,7 +25,9 @@ class TextProps:
   public BaseTextProps {
 
 public:
-  void apply(const RawProps &rawProps) override;
+
+  TextProps() = default;
+  TextProps(const TextProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - DebugStringConvertible
 

ReactCommon/fabric/uimanager/ShadowTree.cpp

@@ -44,9 +44,7 @@ void ShadowTree::constraintLayout(const LayoutConstraints &layoutConstraints, co
 
 UnsharedRootShadowNode ShadowTree::cloneRootShadowNode(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const {
   auto oldRootShadowNode = rootShadowNode_;
-  auto &&props = std::make_shared<RootProps>(*oldRootShadowNode->getProps());
+  auto &&props = std::make_shared<const RootProps>(*oldRootShadowNode->getProps(), layoutConstraints, layoutContext);
-  props->applyLayoutConstraints(layoutConstraints);
-  props->applyLayoutContext(layoutContext);
   auto newRootShadowNode = std::make_shared<RootShadowNode>(oldRootShadowNode, props, nullptr);
   return newRootShadowNode;
 }

ReactCommon/fabric/view/ViewProps.cpp

@@ -7,59 +7,37 @@
 
 #include "ViewProps.h"
 
-#include <fabric/debug/DebugStringConvertibleItem.h>
-#include <fabric/graphics/graphicValuesConversions.h>
 #include <fabric/core/propsConversions.h>
+#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <fabric/graphics/debugStringConvertibleUtils.h>
+#include <fabric/graphics/graphicValuesConversions.h>
 
 namespace facebook {
 namespace react {
 
-void ViewProps::apply(const RawProps &rawProps) {
+ViewProps::ViewProps(const YGStyle &yogaStyle):
-  Props::apply(rawProps);
+  YogaStylableProps(yogaStyle) {}
-  YogaStylableProps::apply(rawProps);
 
-  applyRawProp(rawProps, "zIndex", zIndex_);
+ViewProps::ViewProps(const ViewProps &sourceProps, const RawProps &rawProps):
-  applyRawProp(rawProps, "opacity", opacity_);
+  Props(sourceProps, rawProps),
-  applyRawProp(rawProps, "color", foregroundColor_);
+  YogaStylableProps(sourceProps, rawProps),
-  applyRawProp(rawProps, "backgroundColor", backgroundColor_);
+  zIndex(convertRawProp(rawProps, "zIndex", sourceProps.zIndex)),
-}
+  opacity(convertRawProp(rawProps, "opacity", sourceProps.opacity)),
-
+  foregroundColor(convertRawProp(rawProps, "color", sourceProps.foregroundColor)),
-#pragma mark - Getters
+  backgroundColor(convertRawProp(rawProps, "backgroundColor", sourceProps.backgroundColor)) {};
-
-SharedColor ViewProps::getForegroundColor() const {
-  return foregroundColor_;
-}
-
-SharedColor ViewProps::getBackgroundColor() const {
-  return backgroundColor_;
-}
 
 #pragma mark - DebugStringConvertible
 
 SharedDebugStringConvertibleList ViewProps::getDebugProps() const {
-  ViewProps defaultProps = {};
+  return
-
+    AccessibilityProps::getDebugProps() +
-  SharedDebugStringConvertibleList list = {};
+    YogaStylableProps::getDebugProps() +
-
+    SharedDebugStringConvertibleList {
-#define VIEW_PROPS_ADD_TO_SET(stringName, propertyName, accessor, convertor) \
+      debugStringConvertibleItem("zIndex", zIndex),
-  if (propertyName != defaultProps.propertyName) { \
+      debugStringConvertibleItem("opacity", opacity),
-    list.push_back(std::make_shared<DebugStringConvertibleItem>(#stringName, convertor(propertyName accessor))); \
+      debugStringConvertibleItem("foregroundColor", foregroundColor),
-  }
+      debugStringConvertibleItem("backgroundColor", backgroundColor),
-
+    };
-  VIEW_PROPS_ADD_TO_SET(zIndex, zIndex_, , std::to_string)
-  VIEW_PROPS_ADD_TO_SET(opacity, opacity_, , std::to_string)
-
-  VIEW_PROPS_ADD_TO_SET(backgroundColor, backgroundColor_, , colorNameFromColor)
-  VIEW_PROPS_ADD_TO_SET(foregroundColor, foregroundColor_, , colorNameFromColor)
-
-  // Accessibility Props
-  auto accessibilityPropsList = AccessibilityProps::getDebugProps();
-  std::move(accessibilityPropsList.begin(), accessibilityPropsList.end(), std::back_inserter(list));
-
-  // Yoga styles
-  list.push_back(std::make_shared<DebugStringConvertibleItem>("style", "", YogaStylableProps::getDebugProps()));
-
-  return list;
 }
 
 } // namespace react

ReactCommon/fabric/view/ViewProps.h

@@ -26,28 +26,26 @@ class ViewProps:
   public AccessibilityProps {
 
 public:
-  void apply(const RawProps &rawProps) override;
 
-#pragma mark - Getters
+  ViewProps() = default;
+  ViewProps(const YGStyle &yogaStyle);
+  ViewProps(const ViewProps &sourceProps, const RawProps &rawProps);
 
-  SharedColor getForegroundColor() const;
+#pragma mark - Props
-  SharedColor getBackgroundColor() const;
+
+  const int zIndex {0};
+  const Float opacity {1};
+
+  const SharedColor foregroundColor {nullptr};
+  const SharedColor backgroundColor {nullptr};
+
+  const SharedColor shadowColor {nullptr};
+  const Point shadowOffset {};
 
 #pragma mark - DebugStringConvertible
 
   SharedDebugStringConvertibleList getDebugProps() const override;
-
-private:
-  int zIndex_ {0};
-  Float opacity_ {1.0};
-
-  SharedColor foregroundColor_ {nullptr};
-  SharedColor backgroundColor_ {nullptr};
-
-  SharedColor shadowColor_ {nullptr};
-  Point shadowOffset_ {0, 0};
 };
 
 } // namespace react
 } // namespace facebook
-

ReactCommon/fabric/view/accessibility/AccessibilityProps.cpp

@@ -12,20 +12,7 @@
 namespace facebook {
 namespace react {
 
-void AccessibilityProps::apply(const RawProps &rawProps) {
+AccessibilityProps::AccessibilityProps(const AccessibilityProps &sourceProps, const RawProps &rawProps) {}
-  for (auto const &pair : rawProps) {
-    auto const &name = pair.first;
-    auto const &value = pair.second;
-
-#define ACCESSIBILITY_PROPERTY(stringName, variableName, accessor, convertor) \
-  if (name == #stringName) { \
-    variableName = convertor(value accessor); \
-    continue; \
-  }
-
-    ACCESSIBILITY_PROPERTY(accessibilityLabel, accessibilityLabel_, .asString(),)
-  }
-}
 
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/view/accessibility/AccessibilityProps.h

@@ -20,22 +20,24 @@ class AccessibilityProps;
 typedef std::shared_ptr<const AccessibilityProps> SharedAccessibilityProps;
 
 class AccessibilityProps:
-  public virtual DebugStringConvertible
+  public virtual DebugStringConvertible {
-{
 
 public:
-  void apply(const RawProps &rawProps);
 
-protected:
+  AccessibilityProps() = default;
-  bool accessible_ {true};
+  AccessibilityProps(const AccessibilityProps &sourceProps, const RawProps &rawProps);
-  std::string accessibilityActions_ {""};
+
-  std::string accessibilityLabel_ {""};
+#pragma mark - Props
-  AccessibilityTraits accessibilityTraits_ {AccessibilityTraits::None};
+
-  bool accessibilityViewIsModal_ {false};
+  const bool accessible {true};
-  bool accessibilityElementsHidden_ {false};
+  const std::string accessibilityActions {""};
-  SharedDirectEventHandler onAccessibilityAction_ {nullptr};
+  const std::string accessibilityLabel {""};
-  SharedDirectEventHandler onAccessibilityTap_ {nullptr};
+  const AccessibilityTraits accessibilityTraits {AccessibilityTraits::None};
-  SharedDirectEventHandler onMagicTap_ {nullptr};
+  const bool accessibilityViewIsModal {false};
+  const bool accessibilityElementsHidden {false};
+  const SharedDirectEventHandler onAccessibilityAction {nullptr};
+  const SharedDirectEventHandler onAccessibilityTap {nullptr};
+  const SharedDirectEventHandler onMagicTap {nullptr};
 };
 
 } // namespace react

ReactCommon/fabric/view/root/RootProps.cpp

@@ -7,39 +7,35 @@
 
 #include "RootProps.h"
 
+#include "YogaLayoutableShadowNode.h"
 #include "yogaValuesConversions.h"
 
 namespace facebook {
 namespace react {
 
-void RootProps::applyLayoutConstraints(const LayoutConstraints &layoutConstraints) {
+static YGStyle yogaStyleFromLayoutConstraints(const LayoutConstraints &layoutConstraints) {
-  ensureUnsealed();
+  YGStyle yogaStyle;
-
+  yogaStyle.minDimensions[YGDimensionWidth] =
-  layoutConstraints_ = layoutConstraints;
-
-  yogaStyle_.minDimensions[YGDimensionWidth] =
     yogaStyleValueFromFloat(layoutConstraints.minimumSize.width);
-  yogaStyle_.minDimensions[YGDimensionHeight] =
+  yogaStyle.minDimensions[YGDimensionHeight] =
     yogaStyleValueFromFloat(layoutConstraints.minimumSize.height);
 
-  yogaStyle_.maxDimensions[YGDimensionWidth] =
+  yogaStyle.maxDimensions[YGDimensionWidth] =
     yogaStyleValueFromFloat(layoutConstraints.maximumSize.width);
-  yogaStyle_.maxDimensions[YGDimensionHeight] =
+  yogaStyle.maxDimensions[YGDimensionHeight] =
     yogaStyleValueFromFloat(layoutConstraints.maximumSize.height);
+
+  return yogaStyle;
 }
 
-void RootProps::applyLayoutContext(const LayoutContext &layoutContext) {
+RootProps::RootProps(
-  ensureUnsealed();
+  const RootProps &sourceProps,
-  layoutContext_ = layoutContext;
+  const LayoutConstraints &layoutConstraints,
-}
+  const LayoutContext &layoutContext
-
+):
-LayoutConstraints RootProps::getLayoutConstraints() const {
+  ViewProps(yogaStyleFromLayoutConstraints(layoutConstraints)),
-  return layoutConstraints_;
+  layoutConstraints(layoutConstraints),
-}
+  layoutContext(layoutContext) {};
-
-LayoutContext RootProps::getLayoutContext() const {
-  return layoutContext_;
-}
 
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/view/root/RootProps.h

@@ -25,19 +25,17 @@ class RootProps final:
 
 public:
 
-  /*
+  RootProps() = default;
-   * Same semantic as `apply()` but LayoutConstraints & LayoutContext specific.
+  RootProps(
-   */
+    const RootProps &sourceProps,
-  void applyLayoutConstraints(const LayoutConstraints &layoutConstraints);
+    const LayoutConstraints &layoutConstraints,
-  void applyLayoutContext(const LayoutContext &layoutContext);
+    const LayoutContext &layoutContext
+  );
 
-  LayoutConstraints getLayoutConstraints() const;
+#pragma mark - Props
-  LayoutContext getLayoutContext() const;
 
-private:
+  const LayoutConstraints layoutConstraints {};
-
+  const LayoutContext layoutContext {};
-  LayoutConstraints layoutConstraints_;
-  LayoutContext layoutContext_;
 };
 
 } // namespace react

ReactCommon/fabric/view/root/RootShadowNode.cpp

@@ -16,7 +16,7 @@ ComponentName RootShadowNode::getComponentName() const {
 
 void RootShadowNode::layout() {
   ensureUnsealed();
-  layout(getProps()->getLayoutContext());
+  layout(getProps()->layoutContext);
 }
 
 } // namespace react

ReactCommon/fabric/view/yoga/YogaLayoutableShadowNode.cpp

@@ -10,10 +10,10 @@
 #include <algorithm>
 #include <memory>
 
-#include <yoga/Yoga.h>
 #include <fabric/core/LayoutContext.h>
 #include <fabric/core/LayoutConstraints.h>
 #include <fabric/debug/DebugStringConvertibleItem.h>
+#include <yoga/Yoga.h>
 
 #include "yogaValuesConversions.h"
 
@@ -40,7 +40,7 @@ YogaLayoutableShadowNode::YogaLayoutableShadowNode(
 
   auto yogaNode = std::make_shared<YGNode>();
   yogaNode->setConfig(suitableYogaConfig().get());
-  yogaNode->setStyle(props->getYogaStyle());
+  yogaNode->setStyle(props->yogaStyle);
   yogaNode->setContext(this);
   yogaNode->setDirty(true);
   YogaLayoutableShadowNode::setYogaNodeChildrenBasedOnShadowNodeChildren(*yogaNode, children);
@@ -59,7 +59,7 @@ YogaLayoutableShadowNode::YogaLayoutableShadowNode(
   yogaNode->setDirty(true);
 
   if (props) {
-    yogaNode->setStyle(props->getYogaStyle());
+    yogaNode->setStyle(props->yogaStyle);
   }
 
   if (children) {

ReactCommon/fabric/view/yoga/YogaStylableProps.cpp

@@ -17,18 +17,16 @@
 namespace facebook {
 namespace react {
 
-const YGStyle &YogaStylableProps::getYogaStyle() const {
+static YGStyle convertRawProp(const RawProps &rawProps, const YGStyle &defaultValue) {
-  return yogaStyle_;
+  YGStyle yogaStyle = defaultValue;
-}
 
-void YogaStylableProps::apply(const RawProps &rawProps) {
   for (auto const &pair : rawProps) {
     auto const &name = pair.first;
     auto const &value = pair.second;
 
 #define YOGA_STYLE_PROPERTY(stringName, yogaName, accessor, convertor) \
   if (name == #stringName) { \
-    yogaStyle_.yogaName = convertor(value accessor); \
+    yogaStyle.yogaName = convertor(value accessor); \
     continue; \
   }
 
@@ -97,15 +95,23 @@ void YogaStylableProps::apply(const RawProps &rawProps) {
 
     YOGA_STYLE_OPTIONAL_FLOAT_PROPERTY(aspectRatio)
   }
+
+  return yogaStyle;
 }
 
+YogaStylableProps::YogaStylableProps(const YGStyle &yogaStyle):
+  yogaStyle(yogaStyle) {}
+
+YogaStylableProps::YogaStylableProps(const YogaStylableProps &sourceProps, const RawProps &rawProps):
+  yogaStyle(convertRawProp(rawProps, sourceProps.yogaStyle)) {};
+
 #pragma mark - DebugStringConvertible
 
 SharedDebugStringConvertibleList YogaStylableProps::getDebugProps() const {
   SharedDebugStringConvertibleList list = {};
 
   YGStyle defaultYogaStyle = YGStyle();
-  YGStyle currentYogaStyle = yogaStyle_;
+  YGStyle currentYogaStyle = yogaStyle;
 
 #define YOGA_STYLE_PROPS_ADD_TO_SET(stringName, propertyName, accessor, convertor) \
   { \

ReactCommon/fabric/view/yoga/YogaStylableProps.h

@@ -23,16 +23,18 @@ class YogaStylableProps:
   public virtual DebugStringConvertible {
 
 public:
-  const YGStyle &getYogaStyle() const;
 
-  void apply(const RawProps &rawProps);
+  YogaStylableProps() = default;
+  YogaStylableProps(const YGStyle &yogaStyle);
+  YogaStylableProps(const YogaStylableProps &sourceProps, const RawProps &rawProps);
+
+#pragma mark - Props
+
+  const YGStyle yogaStyle {};
 
 #pragma mark - DebugStringConvertible
 
   SharedDebugStringConvertibleList getDebugProps() const override;
-
-protected:
-  YGStyle yogaStyle_ {};
 };
 
 } // namespace react