Enable module annotation processor in OSS

.gitignore

@@ -31,6 +31,8 @@ project.xcworkspace
 /ReactAndroid/gradle/
 /ReactAndroid/gradlew
 /ReactAndroid/gradlew.bat
+/android/annotations/build/
+/android/annotations-compiler/build/
 
 # Buck
 .buckd
@@ -51,7 +53,6 @@ buck-out
 .gradle
 local.properties
 *.iml
-/android/
 
 # Node
 node_modules

ReactAndroid/build.gradle

@@ -437,6 +437,9 @@ android {
 }
 
 dependencies {
+    api(project(':react-native-annotations'))
+    annotationProcessor(project(':react-native-annotations-compiler'))
+
     api("com.facebook.infer.annotation:infer-annotation:0.11.2")
     api("com.facebook.yoga:proguard-annotations:1.14.1")
     api("javax.inject:javax.inject:1")

ReactAndroid/src/main/java/com/facebook/react/CoreModulesPackage.java

@@ -7,19 +7,13 @@
 
 package com.facebook.react;
 
-import static com.facebook.react.bridge.ReactMarkerConstants.CREATE_UI_MANAGER_MODULE_END;
-import static com.facebook.react.bridge.ReactMarkerConstants.CREATE_UI_MANAGER_MODULE_START;
-import static com.facebook.react.bridge.ReactMarkerConstants.PROCESS_CORE_REACT_PACKAGE_END;
-import static com.facebook.react.bridge.ReactMarkerConstants.PROCESS_CORE_REACT_PACKAGE_START;
-
 import androidx.annotation.Nullable;
+
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactMarker;
 import com.facebook.react.devsupport.LogBoxModule;
-import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.module.annotations.ReactModuleList;
-import com.facebook.react.module.model.ReactModuleInfo;
 import com.facebook.react.module.model.ReactModuleInfoProvider;
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
@@ -30,21 +24,22 @@
 import com.facebook.react.modules.debug.SourceCodeModule;
 import com.facebook.react.modules.deviceinfo.DeviceInfoModule;
 import com.facebook.react.modules.systeminfo.AndroidInfoModule;
-import com.facebook.react.turbomodule.core.interfaces.TurboModule;
 import com.facebook.react.uimanager.UIImplementationProvider;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.systrace.Systrace;
-import java.util.HashMap;
+
 import java.util.List;
-import java.util.Map;
+
+import static com.facebook.react.bridge.ReactMarkerConstants.CREATE_UI_MANAGER_MODULE_END;
+import static com.facebook.react.bridge.ReactMarkerConstants.CREATE_UI_MANAGER_MODULE_START;
+import static com.facebook.react.bridge.ReactMarkerConstants.PROCESS_CORE_REACT_PACKAGE_END;
+import static com.facebook.react.bridge.ReactMarkerConstants.PROCESS_CORE_REACT_PACKAGE_START;
 
 /**
  * This is the basic module to support React Native. The debug modules are now in DebugCorePackage.
  */
 @ReactModuleList(
-    // WARNING: If you modify this list, ensure that the list below in method
-    // getReactModuleInfoByInitialization is also updated
     nativeModules = {
       AndroidInfoModule.class,
       DeviceEventManagerModule.class,
@@ -76,63 +71,9 @@ public CoreModulesPackage(
     mMinTimeLeftInFrameForNonBatchedOperationMs = minTimeLeftInFrameForNonBatchedOperationMs;
   }
 
-  /**
-   * This method is overridden, since OSS does not run the annotation processor to generate {@link
-   * CoreModulesPackage$$ReactModuleInfoProvider} class. Here we check if it exists. If it does not
-   * exist, we generate one manually in {@link
-   * CoreModulesPackage#getReactModuleInfoByInitialization()} and return that instead.
-   */
   @Override
   public ReactModuleInfoProvider getReactModuleInfoProvider() {
-    try {
-      Class<?> reactModuleInfoProviderClass =
-          Class.forName("com.facebook.react.CoreModulesPackage$$ReactModuleInfoProvider");
-      return (ReactModuleInfoProvider) reactModuleInfoProviderClass.newInstance();
-    } catch (ClassNotFoundException e) {
-      // In OSS case, the annotation processor does not run. We fall back on creating this byhand
-      Class<? extends NativeModule>[] moduleList =
-          new Class[] {
-            AndroidInfoModule.class,
-            DeviceEventManagerModule.class,
-            DeviceInfoModule.class,
-            DevSettingsModule.class,
-            ExceptionsManagerModule.class,
-            LogBoxModule.class,
-            HeadlessJsTaskSupportModule.class,
-            SourceCodeModule.class,
-            TimingModule.class,
-            UIManagerModule.class
-          };
-
-      final Map<String, ReactModuleInfo> reactModuleInfoMap = new HashMap<>();
-      for (Class<? extends NativeModule> moduleClass : moduleList) {
-        ReactModule reactModule = moduleClass.getAnnotation(ReactModule.class);
-
-        reactModuleInfoMap.put(
-            reactModule.name(),
-            new ReactModuleInfo(
-                reactModule.name(),
-                moduleClass.getName(),
-                reactModule.canOverrideExistingModule(),
-                reactModule.needsEagerInit(),
-                reactModule.hasConstants(),
-                reactModule.isCxxModule(),
-                TurboModule.class.isAssignableFrom(moduleClass)));
-      }
-
-      return new ReactModuleInfoProvider() {
-        @Override
-        public Map<String, ReactModuleInfo> getReactModuleInfos() {
-          return reactModuleInfoMap;
-        }
-      };
-    } catch (InstantiationException e) {
-      throw new RuntimeException(
-          "No ReactModuleInfoProvider for CoreModulesPackage$$ReactModuleInfoProvider", e);
-    } catch (IllegalAccessException e) {
-      throw new RuntimeException(
-          "No ReactModuleInfoProvider for CoreModulesPackage$$ReactModuleInfoProvider", e);
-    }
+    return new CoreModulesPackage$$ReactModuleInfoProvider();
   }
 
   @Override

ReactAndroid/src/main/java/com/facebook/react/DebugCorePackage.java

@@ -10,19 +10,11 @@
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.devsupport.JSCHeapCapture;
-import com.facebook.react.devsupport.JSDevSupport;
-import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.module.annotations.ReactModuleList;
-import com.facebook.react.module.model.ReactModuleInfo;
 import com.facebook.react.module.model.ReactModuleInfoProvider;
-import com.facebook.react.turbomodule.core.interfaces.TurboModule;
-import java.util.HashMap;
-import java.util.Map;
 
 /**
- * Package defining core framework modules (e.g. UIManager). It should be used for modules that
- * require special integration with other framework parts (e.g. with the list of packages to load
- * view managers from).
+ * Package defining core debug only modules.
  */
 @ReactModuleList(
     nativeModules = {
@@ -44,45 +36,6 @@ public NativeModule getModule(String name, ReactApplicationContext reactContext)
 
   @Override
   public ReactModuleInfoProvider getReactModuleInfoProvider() {
-    try {
-      Class<?> reactModuleInfoProviderClass =
-          Class.forName("com.facebook.react.DebugCorePackage$$ReactModuleInfoProvider");
-      return (ReactModuleInfoProvider) reactModuleInfoProviderClass.newInstance();
-    } catch (ClassNotFoundException e) {
-      // In OSS case, the annotation processor does not run. We fall back on creating this by hand
-      Class<? extends NativeModule>[] moduleList =
-          new Class[] {
-            JSCHeapCapture.class, JSDevSupport.class,
-          };
-
-      final Map<String, ReactModuleInfo> reactModuleInfoMap = new HashMap<>();
-      for (Class<? extends NativeModule> moduleClass : moduleList) {
-        ReactModule reactModule = moduleClass.getAnnotation(ReactModule.class);
-
-        reactModuleInfoMap.put(
-            reactModule.name(),
-            new ReactModuleInfo(
-                reactModule.name(),
-                moduleClass.getName(),
-                reactModule.canOverrideExistingModule(),
-                reactModule.needsEagerInit(),
-                reactModule.hasConstants(),
-                reactModule.isCxxModule(),
-                TurboModule.class.isAssignableFrom(moduleClass)));
-      }
-
-      return new ReactModuleInfoProvider() {
-        @Override
-        public Map<String, ReactModuleInfo> getReactModuleInfos() {
-          return reactModuleInfoMap;
-        }
-      };
-    } catch (InstantiationException e) {
-      throw new RuntimeException(
-          "No ReactModuleInfoProvider for DebugCorePackage$$ReactModuleInfoProvider", e);
-    } catch (IllegalAccessException e) {
-      throw new RuntimeException(
-          "No ReactModuleInfoProvider for DebugCorePackage$$ReactModuleInfoProvider", e);
-    }
+    return new com.facebook.react.DebugCorePackage$$ReactModuleInfoProvider();
   }
 }

ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModule.java

@@ -9,6 +9,7 @@
 
 import androidx.annotation.NonNull;
 import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.react.module.annotations.BaseNativeModule;
 
 /**
  * A native module whose API can be provided to JS catalyst instances. {@link NativeModule}s whose
@@ -18,7 +19,7 @@
  * themselves using {@link CxxModuleWrapper}.
  */
 @DoNotStrip
-public interface NativeModule {
+public interface NativeModule extends BaseNativeModule {
   interface NativeMethod {
     void invoke(JSInstance jsInstance, ReadableArray parameters);
 

android/annotations-compiler/build.gradle

@@ -0,0 +1,23 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+apply plugin: 'java'
+
+sourceSets.configureEach { sourceSet ->
+    tasks.named(sourceSet.compileJavaTaskName).configure {
+        options.annotationProcessorGeneratedSourcesDirectory = file("$buildDir/generated/sources/annotationProcessor/java/${sourceSet.name}")
+    }
+}
+
+java {
+    sourceCompatibility(JavaVersion.VERSION_1_8)
+    targetCompatibility(JavaVersion.VERSION_1_8)
+}
+
+dependencies {
+    implementation('com.squareup:javapoet:1.8.0')
+    implementation('com.facebook.infer.annotation:infer-annotation:0.11.2')
+    implementation(project(':react-native-annotations'))
+}

android/annotations-compiler/src/main/resources/META-INF/services/javax.annotation.processing.Processor

@@ -0,0 +1 @@
+com.facebook.react.module.processing.ReactModuleSpecProcessor

android/annotations/build.gradle

@@ -0,0 +1,10 @@
+apply plugin: 'java'
+
+dependencies {
+
+}
+
+java {
+    sourceCompatibility(JavaVersion.VERSION_1_8)
+    targetCompatibility(JavaVersion.VERSION_1_8)
+}

android/annotations/src/main/java/com/facebook/react/module/annotations/BaseNativeModule.java

@@ -0,0 +1,8 @@
+package com.facebook.react.module.annotations;
+
+/**
+ * Used to make sure classes passed to the ReactModule annotation are actually an instance of
+ * NativeModule without needing a dependency on NativeModule that is in the ReactAndroid target.
+ */
+public interface BaseNativeModule {
+}

ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java → android/annotations/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java

@@ -10,7 +10,6 @@
 import static java.lang.annotation.ElementType.TYPE;
 import static java.lang.annotation.RetentionPolicy.SOURCE;
 
-import com.facebook.react.bridge.NativeModule;
 import java.lang.annotation.Retention;
 import java.lang.annotation.Target;
 
@@ -27,5 +26,5 @@
    *
    * @return List of Native modules in the package.
    */
-  Class<? extends NativeModule>[] nativeModules();
+  Class<? extends BaseNativeModule>[] nativeModules();
 }

settings.gradle.kts

@@ -9,3 +9,9 @@ include(
     ":ReactAndroid",
     ":RNTester:android:app"
 )
+
+include(":react-native-annotations")
+project(":react-native-annotations").projectDir = File(rootProject.projectDir, "android/annotations")
+
+include(":react-native-annotations-compiler")
+project(":react-native-annotations-compiler").projectDir = File(rootProject.projectDir, "android/annotations-compiler")