Refactor app template setup util functions

Summary:
Changelog: [internal] Refactor RCTAppSetupUtils to c functions.

Since RCTAppSetupUtils doesn't retain any states, we don't need it to be a class.

Reviewed By: philIip

Differential Revision: D33084352

fbshipit-source-id: 1372a2737eafffa46ee6e5164a970dd12699c71c

React/AppSetup/RCTAppSetupUtils.h

@@ -28,16 +28,16 @@
 #import <ReactCommon/RCTTurboModuleManager.h>
 #endif
 
-@interface RCTAppSetupUtils : NSObject
-+ (void)prepareApp:(UIApplication *_Nonnull)application;
-+ (UIView *_Nonnull)defaultRootViewWithBridge:(RCTBridge *_Nonnull)bridge
-                                   moduleName:(NSString *_Nonnull)moduleName
-                            initialProperties:(nullable NSDictionary *)initialProperties;
+RCT_EXTERN_C_BEGIN
+
+void RCTAppSetupPrepareApp(UIApplication *application);
+UIView *RCTAppSetupDefaultRootView(RCTBridge *bridge, NSString *moduleName, NSDictionary *initialProperties);
 
 #if RCT_NEW_ARCH_ENABLED
-+ (id<RCTTurboModule> _Nonnull)defaultModuleInstanceFromClass:(Class _Nonnull)moduleClass;
-+ (std::unique_ptr<facebook::react::JSExecutorFactory>)
-    defaultJsExecutorFactoryForBridge:(RCTBridge *_Nonnull)bridge
-               withTurboModuleManager:(RCTTurboModuleManager *_Nonnull)turboModuleManager;
+id<RCTTurboModule> RCTAppSetupDefaultModuleFromClass(Class moduleClass);
+std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupDefaultJsexecutorFactory(
+    RCTBridge *bridge,
+    RCTTurboModuleManager *turboModuleManager);
 #endif
-@end
+
+RCT_EXTERN_C_END

React/AppSetup/RCTAppSetupUtils.mm

@@ -44,9 +44,7 @@ static void InitializeFlipper(UIApplication *application)
 }
 #endif
 
-@implementation RCTAppSetupUtils
-
-+ (void)prepareApp:(UIApplication *)application
+void RCTAppSetupPrepareApp(UIApplication *application)
 {
 #ifdef FB_SONARKIT_ENABLED
   InitializeFlipper(application);
@@ -57,9 +55,7 @@ static void InitializeFlipper(UIApplication *application)
 #endif
 }
 
-+ (UIView *)defaultRootViewWithBridge:(RCTBridge *)bridge
-                           moduleName:(NSString *)moduleName
-                    initialProperties:(NSDictionary *)initialProperties
+UIView *RCTAppSetupDefaultRootView(RCTBridge *bridge, NSString *moduleName, NSDictionary *initialProperties)
 {
 #if RCT_NEW_ARCH_ENABLED
   return [[RCTFabricSurfaceHostingProxyRootView alloc] initWithBridge:bridge
@@ -71,7 +67,7 @@ static void InitializeFlipper(UIApplication *application)
 }
 
 #if RCT_NEW_ARCH_ENABLED
-+ (id<RCTTurboModule>)defaultModuleInstanceFromClass:(Class)moduleClass
+id<RCTTurboModule> RCTAppSetupDefaultModuleFromClass(Class moduleClass)
 {
   // Set up the default RCTImageLoader and RCTNetworking modules.
   if (moduleClass == RCTImageLoader.class) {
@@ -96,9 +92,9 @@ static void InitializeFlipper(UIApplication *application)
   return [moduleClass new];
 }
 
-+ (std::unique_ptr<facebook::react::JSExecutorFactory>)defaultJsExecutorFactoryForBridge:(RCTBridge *)bridge
-                                                                  withTurboModuleManager:
-                                                                      (RCTTurboModuleManager *)turboModuleManager;
+std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupDefaultJsExecutorFactory(
+    RCTBridge *bridge,
+    RCTTurboModuleManager *turboModuleManager)
 {
   // Necessary to allow NativeModules to lookup TurboModules
   [bridge setRCTTurboModuleRegistry:turboModuleManager];
@@ -131,5 +127,3 @@ static void InitializeFlipper(UIApplication *application)
 }
 
 #endif
-
-@end

template/ios/HelloWorld/AppDelegate.mm

@@ -25,11 +25,13 @@
 @end
 #endif
 
+using namespace facebook::react;
+
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
-  [RCTAppSetupUtils prepareApp: application];
+  RCTAppSetupPrepareApp(application);
 
   RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
 
@@ -41,9 +43,7 @@
   bridge.surfacePresenter = _bridgeAdapter.surfacePresenter;
 #endif
 
-  UIView *rootView = [RCTAppSetupUtils defaultRootViewWithBridge:bridge
-                                   moduleName:@"HelloWorld"
-                           initialProperties:nil];
+  UIView *rootView = RCTAppSetupDefaultRootView(bridge, @"HelloWorld", nil);
 
   if (@available(iOS 13.0, *)) {
       rootView.backgroundColor = [UIColor systemBackgroundColor];
@@ -77,7 +77,7 @@
   _turboModuleManager = [[RCTTurboModuleManager alloc] initWithBridge:bridge
                                                              delegate:self
                                                             jsInvoker:bridge.jsCallInvoker];
-  return [RCTAppSetupUtils defaultJsExecutorFactoryForBridge:bridge withTurboModuleManager:_turboModuleManager];
+  return RCTAppSetupDefaultJsExecutorFactory(bridge, _turboModuleManager);
 }
 
 #pragma mark RCTTurboModuleManagerDelegate
@@ -101,7 +101,7 @@
 
 - (id<RCTTurboModule>)getModuleInstanceFromClass:(Class)moduleClass
 {
-  return [RCTAppSetupUtils defaultModuleInstanceFromClass: moduleClass];
+  return RCTAppSetupDefaultModuleFromClass(moduleClass);
 }
 
 #endif