react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedResultAsyncTask.java

// 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.

package com.facebook.react.bridge;

import android.os.AsyncTask;

/**
 * Abstract base for a AsyncTask with result support that should have any RuntimeExceptions it
 * throws handled by the {@link com.facebook.react.bridge.NativeModuleCallExceptionHandler}
 * registered if the app is in dev mode.
 */
public abstract class GuardedResultAsyncTask<Result>
    extends AsyncTask<Void, Void, Result> {

  private final ReactContext mReactContext;

  protected GuardedResultAsyncTask(ReactContext reactContext) {
    mReactContext = reactContext;
  }

  @Override
  protected final Result doInBackground(Void... params) {
    try {
      return doInBackgroundGuarded();
    } catch (RuntimeException e) {
      mReactContext.handleException(e);
      throw e;
    }
  }

  @Override
  protected final void onPostExecute(Result result) {
    try {
      onPostExecuteGuarded(result);
    } catch (RuntimeException e) {
      mReactContext.handleException(e);
    }
  }

  protected abstract Result doInBackgroundGuarded();
  protected abstract void onPostExecuteGuarded(Result result);

}