Remove folly import in GenerateModuleObjCpp

Summary:
Changelog:

[iOS][Changed]
Replaced folly::Optional with std::optional from C++17 in Objc module generator.

Reviewed By: philIip

Differential Revision: D32367103

fbshipit-source-id: f0d254c4add7d6d2e0bdbceb09a852b4a01ea8c7

Author: Erich Graham

Libraries/TypeSafety/RCTConvertHelpers.h

@@ -5,12 +5,13 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+#import <optional>
+
 #import <vector>
 
 #import <Foundation/Foundation.h>
 
 #import <FBLazyVector/FBLazyVector.h>
-#import <folly/Optional.h>
 
 namespace facebook {
 namespace react {
@@ -35,22 +36,22 @@ NSArray *RCTConvertVecToArray(const ContainerT &vec)
 }
 
 template<typename ContainerT>
-NSArray *RCTConvertOptionalVecToArray(const folly::Optional<ContainerT> &vec, id (^convertor)(typename ContainerT::value_type element))
+NSArray *RCTConvertOptionalVecToArray(const std::optional<ContainerT> &vec, id (^convertor)(typename ContainerT::value_type element))
 {
-  return vec.hasValue() ? RCTConvertVecToArray(vec.value(), convertor) : nil;
+  return vec.has_value() ? RCTConvertVecToArray(vec.value(), convertor) : nil;
 }
 
 template<typename ContainerT>
-NSArray *RCTConvertOptionalVecToArray(const folly::Optional<ContainerT> &vec)
+NSArray *RCTConvertOptionalVecToArray(const std::optional<ContainerT> &vec)
 {
-  return vec.hasValue() ? RCTConvertVecToArray(vec.value(), ^id(typename ContainerT::value_type element) { return element; }) : nil;
+  return vec.has_value() ? RCTConvertVecToArray(vec.value(), ^id(typename ContainerT::value_type element) { return element; }) : nil;
 }
 
 bool RCTBridgingToBool(id value);
-folly::Optional<bool> RCTBridgingToOptionalBool(id value);
+std::optional<bool> RCTBridgingToOptionalBool(id value);
 NSString *RCTBridgingToString(id value);
 NSString *RCTBridgingToOptionalString(id value);
-folly::Optional<double> RCTBridgingToOptionalDouble(id value);
+std::optional<double> RCTBridgingToOptionalDouble(id value);
 double RCTBridgingToDouble(id value);
 NSArray *RCTBridgingToArray(id value);
 
@@ -64,10 +65,10 @@ facebook::react::LazyVector<T> RCTBridgingToVec(id value, T (^ctor)(id element))
 }
 
 template<typename T>
-folly::Optional<facebook::react::LazyVector<T>> RCTBridgingToOptionalVec(id value, T (^ctor)(id element))
+std::optional<facebook::react::LazyVector<T>> RCTBridgingToOptionalVec(id value, T (^ctor)(id element))
 {
   if (value == nil || value == (id)kCFNull) {
-    return folly::none;
+    return std::nullopt;
   } else {
     return RCTBridgingToVec(value, ctor);
   }

Libraries/TypeSafety/RCTConvertHelpers.mm

@@ -14,7 +14,7 @@ bool RCTBridgingToBool(id value)
   return [RCTConvert BOOL:value] ? true : false;
 }
 
-folly::Optional<bool> RCTBridgingToOptionalBool(id value)
+std::optional<bool> RCTBridgingToOptionalBool(id value)
 {
   if (!RCTNilIfNull(value)) {
     return {};
@@ -33,7 +33,7 @@ bool RCTBridgingToBool(id value)
 }
 
 
-folly::Optional<double> RCTBridgingToOptionalDouble(id value)
+std::optional<double> RCTBridgingToOptionalDouble(id value)
 {
   if (!RCTNilIfNull(value)) {
     return {};

Libraries/TypeSafety/RCTTypeSafety.podspec

@@ -16,9 +16,6 @@ else
   source[:tag] = "v#{version}"
 end
 
-folly_compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1 -Wno-comma -Wno-shorten-64-to-32'
-folly_version = '2021.06.28.00-v2'
-
 Pod::Spec.new do |s|
   s.name                   = "RCTTypeSafety"
   s.version                = version
@@ -27,18 +24,16 @@ Pod::Spec.new do |s|
   s.license                = package["license"]
   s.author                 = "Facebook, Inc. and its affiliates"
   s.platforms              = { :ios => "12.4" }
-  s.compiler_flags         = folly_compiler_flags
   s.source                 = source
   s.source_files           = "**/*.{c,h,m,mm,cpp}"
   s.header_dir             = "RCTTypeSafety"
   s.pod_target_xcconfig    = {
                                "USE_HEADERMAP" => "YES",
                                "CLANG_CXX_LANGUAGE_STANDARD" => "c++17",
-                               "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/Libraries/TypeSafety\" \"$(PODS_ROOT)/RCT-Folly\""
+                               "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/Libraries/TypeSafety\""
                              }
 
   s.dependency "FBLazyVector", version
-  s.dependency "RCT-Folly", folly_version
   s.dependency "RCTRequired", version
   s.dependency "React-Core", version
 end

React/CoreModules/RCTAccessibilityManager.mm

@@ -281,9 +281,9 @@ - (void)setMultipliers:(NSDictionary<NSString *, NSNumber *> *)multipliers
 static void setMultipliers(
     NSMutableDictionary<NSString *, NSNumber *> *multipliers,
     NSString *key,
-    folly::Optional<double> optionalDouble)
+    std::optional<double> optionalDouble)
 {
-  if (optionalDouble.hasValue()) {
+  if (optionalDouble.has_value()) {
     multipliers[key] = @(optionalDouble.value());
   }
 }

React/CoreModules/RCTExceptionsManager.mm

@@ -117,15 +117,15 @@ - (void)reportFatal:(NSString *)message stack:(NSArray<NSDictionary *> *)stack e
   NSMutableArray<NSDictionary *> *stackArray = [NSMutableArray<NSDictionary *> new];
   for (auto frame : data.stack()) {
     NSMutableDictionary *frameDict = [NSMutableDictionary new];
-    if (frame.column().hasValue()) {
+    if (frame.column().has_value()) {
       frameDict[@"column"] = @(frame.column().value());
     }
     frameDict[@"file"] = frame.file();
-    if (frame.lineNumber().hasValue()) {
+    if (frame.lineNumber().has_value()) {
       frameDict[@"lineNumber"] = @(frame.lineNumber().value());
     }
     frameDict[@"methodName"] = frame.methodName();
-    if (frame.collapse().hasValue()) {
+    if (frame.collapse().has_value()) {
       frameDict[@"collapse"] = @(frame.collapse().value());
     }
     [stackArray addObject:frameDict];

React/CoreModules/RCTPlatform.mm

@@ -15,6 +15,8 @@
 
 #import "CoreModulesPlugins.h"
 
+#import <folly/Optional.h>
+
 using namespace facebook::react;
 
 static NSString *interfaceIdiom(UIUserInterfaceIdiom idiom)

React/CoreModules/RCTStatusBarManager.mm

@@ -181,7 +181,7 @@ - (void)applicationWillChangeStatusBarFrame:(NSNotification *)notification
   RCTUnsafeExecuteOnMainQueueSync(^{
     constants = facebook::react::typedConstants<JS::NativeStatusBarManagerIOS::Constants>({
         .HEIGHT = RCTSharedApplication().statusBarFrame.size.height,
-        .DEFAULT_BACKGROUND_COLOR = folly::none,
+        .DEFAULT_BACKGROUND_COLOR = std::nullopt,
     });
   });