C++ style enums 3/N: ExperimentalFeature (#1386)

Summary:
X-link: https://github.com/facebook/react-native/pull/39448

Pull Request resolved: https://github.com/facebook/yoga/pull/1386

This converts usages of YGExperimentalFeature to ExperimentalFeature

Reviewed By: rozele

Differential Revision: D49269440

fbshipit-source-id: 0fcb4f380e214a6aadcac457df5a989789bb05d2

yoga/Yoga.cpp

@@ -851,13 +851,14 @@ void YGConfigSetExperimentalFeatureEnabled(
     const YGConfigRef config,
     const YGExperimentalFeature feature,
     const bool enabled) {
-  resolveRef(config)->setExperimentalFeatureEnabled(feature, enabled);
+  resolveRef(config)->setExperimentalFeatureEnabled(
+      scopedEnum(feature), enabled);
 }
 
 bool YGConfigIsExperimentalFeatureEnabled(
     const YGConfigConstRef config,
     const YGExperimentalFeature feature) {
-  return resolveRef(config)->isExperimentalFeatureEnabled(feature);
+  return resolveRef(config)->isExperimentalFeatureEnabled(scopedEnum(feature));
 }
 
 void YGConfigSetUseWebDefaults(const YGConfigRef config, const bool enabled) {

yoga/algorithm/CalculateLayout.cpp

@@ -154,7 +154,7 @@ static void computeFlexBasisForChild(
   if (!resolvedFlexBasis.isUndefined() && !yoga::isUndefined(mainAxisSize)) {
     if (child->getLayout().computedFlexBasis.isUndefined() ||
         (child->getConfig()->isExperimentalFeatureEnabled(
-             YGExperimentalFeatureWebFlexBasis) &&
+             ExperimentalFeature::WebFlexBasis) &&
          child->getLayout().computedFlexBasisGeneration != generationCount)) {
       const FloatOptional paddingAndBorder =
           FloatOptional(paddingAndBorderForAxis(child, mainAxis, ownerWidth));
@@ -479,7 +479,7 @@ static void layoutAbsoluteChild(
         leadingEdge(mainAxis));
   } else if (
       node->getConfig()->isExperimentalFeatureEnabled(
-          YGExperimentalFeatureAbsolutePercentageAgainstPaddingEdge) &&
+          ExperimentalFeature::AbsolutePercentageAgainstPaddingEdge) &&
       child->isLeadingPositionDefined(mainAxis)) {
     child->setLayoutPosition(
         child->getLeadingPosition(
@@ -526,7 +526,7 @@ static void layoutAbsoluteChild(
         leadingEdge(crossAxis));
   } else if (
       node->getConfig()->isExperimentalFeatureEnabled(
-          YGExperimentalFeatureAbsolutePercentageAgainstPaddingEdge) &&
+          ExperimentalFeature::AbsolutePercentageAgainstPaddingEdge) &&
       child->isLeadingPositionDefined(crossAxis)) {
     child->setLayoutPosition(
         child->getLeadingPosition(
@@ -2323,7 +2323,7 @@ static void calculateLayoutImpl(
       }
       const bool absolutePercentageAgainstPaddingEdge =
           node->getConfig()->isExperimentalFeatureEnabled(
-              YGExperimentalFeatureAbsolutePercentageAgainstPaddingEdge);
+              ExperimentalFeature::AbsolutePercentageAgainstPaddingEdge);
 
       layoutAbsoluteChild(
           node,

yoga/bits/EnumBitset.h

@@ -1,19 +0,0 @@
-/*
- * 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.
- */
-
-#pragma once
-
-#include <yoga/YGEnums.h>
-#include <bitset>
-
-namespace facebook::yoga {
-
-// std::bitset with one bit for each option defined in YG_ENUM_SEQ_DECL
-template <typename Enum>
-using EnumBitset = std::bitset<enums::count<Enum>()>;
-
-} // namespace facebook::yoga

yoga/config/Config.cpp

@@ -41,16 +41,16 @@ bool Config::shouldPrintTree() const {
 }
 
 void Config::setExperimentalFeatureEnabled(
-    YGExperimentalFeature feature,
+    ExperimentalFeature feature,
     bool enabled) {
-  experimentalFeatures_.set(feature, enabled);
+  experimentalFeatures_.set(static_cast<size_t>(feature), enabled);
 }
 
-bool Config::isExperimentalFeatureEnabled(YGExperimentalFeature feature) const {
+bool Config::isExperimentalFeatureEnabled(ExperimentalFeature feature) const {
-  return experimentalFeatures_.test(feature);
+  return experimentalFeatures_.test(static_cast<size_t>(feature));
 }
 
-EnumBitset<YGExperimentalFeature> Config::getEnabledExperiments() const {
+ExperimentalFeatureSet Config::getEnabledExperiments() const {
   return experimentalFeatures_;
 }
 

yoga/config/Config.h

@@ -7,8 +7,10 @@
 
 #pragma once
 
+#include <bitset>
+
 #include <yoga/Yoga.h>
-#include <yoga/bits/EnumBitset.h>
+#include <yoga/enums/ExperimentalFeature.h>
 
 // Tag struct used to form the opaque YGConfigRef for the public C API
 struct YGConfig {};
@@ -18,6 +20,8 @@ namespace facebook::yoga {
 class Config;
 class Node;
 
+using ExperimentalFeatureSet = std::bitset<ordinalCount<ExperimentalFeature>()>;
+
 // Whether moving a node from an old to new config should dirty previously
 // calculated layout results.
 bool configUpdateInvalidatesLayout(
@@ -43,11 +47,9 @@ class YG_EXPORT Config : public ::YGConfig {
   void setShouldPrintTree(bool printTree);
   bool shouldPrintTree() const;
 
-  void setExperimentalFeatureEnabled(
+  void setExperimentalFeatureEnabled(ExperimentalFeature feature, bool enabled);
-      YGExperimentalFeature feature,
+  bool isExperimentalFeatureEnabled(ExperimentalFeature feature) const;
-      bool enabled);
+  ExperimentalFeatureSet getEnabledExperiments() const;
-  bool isExperimentalFeatureEnabled(YGExperimentalFeature feature) const;
-  EnumBitset<YGExperimentalFeature> getEnabledExperiments() const;
 
   void setErrata(YGErrata errata);
   void addErrata(YGErrata errata);
@@ -79,7 +81,7 @@ class YG_EXPORT Config : public ::YGConfig {
   YGLogger logger_;
 
   ConfigFlags flags_{};
-  EnumBitset<YGExperimentalFeature> experimentalFeatures_{};
+  ExperimentalFeatureSet experimentalFeatures_{};
   YGErrata errata_ = YGErrataNone;
   float pointScaleFactor_ = 1.0f;
   void* context_ = nullptr;

yoga/enums/YogaEnums.h

@@ -10,9 +10,9 @@
 namespace facebook::yoga {
 
 template <typename EnumT>
-constexpr inline int32_t ordinalCount() = delete;
+constexpr inline int32_t ordinalCount();
 
 template <typename EnumT>
-constexpr inline int32_t bitCount() = delete;
+constexpr inline int32_t bitCount();
 
 } // namespace facebook::yoga