expose JS source location to JS

Differential Revision: D2526103

fb-gh-sync-id: d597b52dd9442fc27b0841b7df447e9d8d7de6e1

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

@@ -60,7 +60,7 @@ import com.facebook.react.uimanager.events.RCTEventEmitter;
         new ExceptionsManagerModule(mReactInstanceManager.getDevSupportManager()),
         new Timing(catalystApplicationContext),
         new SourceCodeModule(
-            mReactInstanceManager.getDevSupportManager().getSourceUrl(),
+            mReactInstanceManager.getSourceUrl(),
             mReactInstanceManager.getDevSupportManager().getSourceMapUrl()),
         new UIManagerModule(
             catalystApplicationContext,

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

@@ -86,6 +86,7 @@ public class ReactInstanceManager {
   private @Nullable volatile ReactContext mCurrentReactContext;
   private final Context mApplicationContext;
   private @Nullable DefaultHardwareBackBtnHandler mDefaultBackButtonImpl;
+  private String mSourceUrl;
 
   private final ReactInstanceDevCommandsHandler mDevInterface =
       new ReactInstanceDevCommandsHandler() {
@@ -340,6 +341,13 @@ public class ReactInstanceManager {
     mDevSupportManager.showDevOptionsDialog();
   }
 
+  /**
+   * Get the URL where the last bundle was loaded from.
+   */
+  public String getSourceUrl() {
+    return Assertions.assertNotNull(mSourceUrl);
+  }
+
   /**
    * Attach given {@param rootView} to a catalyst instance manager and start JS application using
    * JS module provided by {@link ReactRootView#getJSModuleName}. If the react context is currently
@@ -493,6 +501,7 @@ public class ReactInstanceManager {
       JavaScriptExecutor jsExecutor,
       JSBundleLoader jsBundleLoader) {
     FLog.i(ReactConstants.TAG, "Creating react context.");
+    mSourceUrl = jsBundleLoader.getSourceUrl();
     NativeModuleRegistry.Builder nativeRegistryBuilder = new NativeModuleRegistry.Builder();
     JavaScriptModulesConfig.Builder jsModulesBuilder = new JavaScriptModulesConfig.Builder();
 

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

@@ -30,6 +30,11 @@ public abstract class JSBundleLoader {
       public void loadScript(ReactBridge bridge) {
         bridge.loadScriptFromAssets(assetManager, assetFileName);
       }
+
+      @Override
+      public String getSourceUrl() {
+        return "file:///android_asset/" + assetFileName;
+      }
     };
   }
 
@@ -48,6 +53,11 @@ public abstract class JSBundleLoader {
       public void loadScript(ReactBridge bridge) {
         bridge.loadScriptFromNetworkCached(sourceURL, cachedFileLocation);
       }
+
+      @Override
+      public String getSourceUrl() {
+        return sourceURL;
+      }
     };
   }
 
@@ -62,8 +72,14 @@ public abstract class JSBundleLoader {
       public void loadScript(ReactBridge bridge) {
         bridge.loadScriptFromNetworkCached(sourceURL, null);
       }
+
+      @Override
+      public String getSourceUrl() {
+        return sourceURL;
+      }
     };
   }
 
   public abstract void loadScript(ReactBridge bridge);
+  public abstract String getSourceUrl();
 }