Remove legacy architecture code guarded by RCT_REMOVE_LEGACY_ARCH

Summary:
This removes old bridge-based architecture code that was conditionally compiled
via the RCT_REMOVE_LEGACY_ARCH preprocessor flag.

The #ifndef RCT_REMOVE_LEGACY_ARCH guards and the legacy code within them have
been removed. Where #else branches existed (new architecture code paths), only
the new architecture code is kept.

Files deleted entirely (100% legacy content):
- RCTImageViewManager.mm/h
- RCTImageShadowView.mm/h
- RCTImageView.mm/h
- RCTInputAccessoryViewManager.mm
- RCTSinglelineTextInputView.mm/h
- RCTSinglelineTextInputViewManager.mm/h
- RCTBaseTextShadowView.h

Files modified (legacy blocks removed):
- RCTReactNativeFactory.mm - removed 5 legacy blocks
- RCTAppSetupUtils.mm - removed 2 legacy blocks (functions now return nullptr)

Differential Revision: D104495793

Author: christophpurrer

packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm

@@ -67,26 +67,4 @@ - (RCTRootViewFactory *)rootViewFactory
   return self.reactNativeFactory.rootViewFactory;
 }
 
-#if !defined(RCT_REMOVE_LEGACY_ARCH)
-- (RCTBridge *)bridge
-{
-  return self.rootViewFactory.bridge;
-}
-
-- (RCTSurfacePresenterBridgeAdapter *)bridgeAdapter
-{
-  return self.rootViewFactory.bridgeAdapter;
-}
-
-- (void)setBridge:(RCTBridge *)bridge
-{
-  self.reactNativeFactory.rootViewFactory.bridge = bridge;
-}
-
-- (void)setBridgeAdapter:(RCTSurfacePresenterBridgeAdapter *)bridgeAdapter
-{
-  self.reactNativeFactory.rootViewFactory.bridgeAdapter = bridgeAdapter;
-}
-#endif
-
 @end

packages/react-native/Libraries/AppDelegate/RCTAppSetupUtils.mm

@@ -120,60 +120,12 @@ void RCTAppSetupPrepareApp(UIApplication *application, BOOL turboModuleEnabled)
     RCTTurboModuleManager *turboModuleManager,
     const std::shared_ptr<facebook::react::RuntimeScheduler> &runtimeScheduler)
 {
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  // Necessary to allow NativeModules to lookup TurboModules
-  [bridge setRCTTurboModuleRegistry:turboModuleManager];
-
-#if RCT_DEV
-  /**
-   * Instantiating DevMenu has the side-effect of registering
-   * shortcuts for CMD + d, CMD + i,  and CMD + n via RCTDevMenu.
-   * Therefore, when TurboModules are enabled, we must manually create this
-   * NativeModule.
-   */
-  [turboModuleManager moduleForName:"RCTDevMenu"];
-#endif // end RCT_DEV
-
-  auto runtimeInstallerLambda = [turboModuleManager, bridge, runtimeScheduler](facebook::jsi::Runtime &runtime) {
-    if (!bridge || !turboModuleManager) {
-      return;
-    }
-    if (runtimeScheduler) {
-      facebook::react::RuntimeSchedulerBinding::createAndInstallIfNeeded(runtime, runtimeScheduler);
-    }
-    [turboModuleManager installJSBindings:runtime];
-  };
-#if USE_THIRD_PARTY_JSC != 1
-  return std::make_unique<facebook::react::HermesExecutorFactory>(
-      facebook::react::RCTJSIExecutorRuntimeInstaller(runtimeInstallerLambda));
-#endif
-#else
-  // This method should not be invoked in the New Arch. So when Legacy Arch is removed, we can
-  // safly return a nullptr.
   return nullptr;
-#endif
 }
 
 std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupJsExecutorFactoryForOldArch(
     RCTBridge *bridge,
     const std::shared_ptr<facebook::react::RuntimeScheduler> &runtimeScheduler)
 {
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  auto runtimeInstallerLambda = [bridge, runtimeScheduler](facebook::jsi::Runtime &runtime) {
-    if (!bridge) {
-      return;
-    }
-    if (runtimeScheduler) {
-      facebook::react::RuntimeSchedulerBinding::createAndInstallIfNeeded(runtime, runtimeScheduler);
-    }
-  };
-#if USE_THIRD_PARTY_JSC != 1
-  return std::make_unique<facebook::react::HermesExecutorFactory>(
-      facebook::react::RCTJSIExecutorRuntimeInstaller(runtimeInstallerLambda));
-#endif
-#else
-  // This method should not be invoked in the New Arch. So when Legacy Arch is removed, we can
-  // safly return a nullptr.
   return nullptr;
-#endif
 }

packages/react-native/Libraries/AppDelegate/RCTReactNativeFactory.mm

@@ -274,12 +274,7 @@ - (RCTRootViewFactory *)createRCTRootViewFactory
 
   configuration.sourceURLForBridge = ^NSURL *_Nullable(RCTBridge *_Nonnull bridge)
   {
-#ifndef RCT_REMOVE_LEGACY_ARCH
-    return [weakSelf.delegate sourceURLForBridge:bridge];
-#else
-    // When the Legacy Arch is removed, the Delegate does not have a sourceURLForBridge method
     return [weakSelf.delegate bundleURL];
-#endif
   };
 
   if ([self.delegate respondsToSelector:@selector(extraModulesForBridge:)]) {
@@ -289,52 +284,6 @@ - (RCTRootViewFactory *)createRCTRootViewFactory
     };
   }
 
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  // When the Legacy Arch is removed, the Delegate does not have a extraLazyModuleClassesForBridge method
-  if ([self.delegate respondsToSelector:@selector(extraLazyModuleClassesForBridge:)]) {
-    configuration.extraLazyModuleClassesForBridge =
-        ^NSDictionary<NSString *, Class> *_Nonnull(RCTBridge *_Nonnull bridge)
-    {
-      return [weakSelf.delegate extraLazyModuleClassesForBridge:bridge];
-    };
-  }
-#endif
-
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  // When the Legacy Arch is removed, the Delegate does not have a bridge:didNotFindModule method
-  // We return NO, because if we have invoked this method is unlikely that the module will be actually registered
-  if ([self.delegate respondsToSelector:@selector(bridge:didNotFindModule:)]) {
-    configuration.bridgeDidNotFindModule = ^BOOL(RCTBridge *_Nonnull bridge, NSString *_Nonnull moduleName) {
-      return [weakSelf.delegate bridge:bridge didNotFindModule:moduleName];
-    };
-  }
-#endif
-
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  // When the Legacy Arch is removed, the Delegate does not have a
-  // loadSourceForBridge:onProgress:onComplete: method
-  // We then call the loadBundleAtURL:onProgress:onComplete: instead
-  if ([self.delegate respondsToSelector:@selector(loadSourceForBridge:onProgress:onComplete:)]) {
-    configuration.loadSourceForBridgeWithProgress =
-        ^(RCTBridge *_Nonnull bridge,
-          RCTSourceLoadProgressBlock _Nonnull onProgress,
-          RCTSourceLoadBlock _Nonnull loadCallback) {
-          [weakSelf.delegate loadSourceForBridge:bridge onProgress:onProgress onComplete:loadCallback];
-        };
-  }
-#endif
-
-#ifndef RCT_REMOVE_LEGACY_ARCH
-  // When the Legacy Arch is removed, the Delegate does not have a
-  // loadSourceForBridge:withBlock: method
-  // We then call the loadBundleAtURL:onProgress:onComplete: instead
-  if ([self.delegate respondsToSelector:@selector(loadSourceForBridge:withBlock:)]) {
-    configuration.loadSourceForBridge = ^(RCTBridge *_Nonnull bridge, RCTSourceLoadBlock _Nonnull loadCallback) {
-      [weakSelf.delegate loadSourceForBridge:bridge withBlock:loadCallback];
-    };
-  }
-#endif
-
   configuration.jsRuntimeConfiguratorDelegate = self;
 
   return [[RCTRootViewFactory alloc] initWithTurboModuleDelegate:self hostDelegate:self configuration:configuration];

packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm

@@ -264,48 +264,6 @@ - (RCTHost *)createReactHost:(NSDictionary *)launchOptions
   return nil;
 }
 
-#ifndef RCT_REMOVE_LEGACY_ARCH
-- (NSDictionary<NSString *, Class> *)extraLazyModuleClassesForBridge:(RCTBridge *)bridge
-{
-  if (_configuration.extraLazyModuleClassesForBridge != nil) {
-    return _configuration.extraLazyModuleClassesForBridge(bridge);
-  }
-  return nil;
-}
-
-- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
-{
-  if (_configuration.sourceURLForBridge != nil) {
-    return _configuration.sourceURLForBridge(bridge);
-  }
-  return [self bundleURL];
-}
-
-- (BOOL)bridge:(RCTBridge *)bridge didNotFindModule:(NSString *)moduleName
-{
-  if (_configuration.bridgeDidNotFindModule != nil) {
-    return _configuration.bridgeDidNotFindModule(bridge, moduleName);
-  }
-  return NO;
-}
-
-- (void)loadSourceForBridge:(RCTBridge *)bridge withBlock:(RCTSourceLoadBlock)loadCallback
-{
-  if (_configuration.loadSourceForBridge != nil) {
-    _configuration.loadSourceForBridge(bridge, loadCallback);
-  }
-}
-
-- (void)loadSourceForBridge:(RCTBridge *)bridge
-                 onProgress:(RCTSourceLoadProgressBlock)onProgress
-                 onComplete:(RCTSourceLoadBlock)loadCallback
-{
-  if (_configuration.loadSourceForBridgeWithProgress != nil) {
-    _configuration.loadSourceForBridgeWithProgress(bridge, onProgress, loadCallback);
-  }
-}
-#endif
-
 - (NSURL *)bundleURL
 {
   return self->_configuration.bundleURLBlock();