code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.rxjava3.internal.observers;
  
  import java.util.concurrent.atomic.AtomicReference;
  
  import io.reactivex.rxjava3.core.CompletableObserver;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.exceptions.OnErrorNotImplementedException;
  import io.reactivex.rxjava3.internal.disposables.DisposableHelper;
  import io.reactivex.rxjava3.observers.LambdaConsumerIntrospection;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  public final class EmptyCompletableObserver
  extends AtomicReference<Disposable>
  implements CompletableObserver, Disposable, LambdaConsumerIntrospection {
  
      private static final long serialVersionUID = -7545121636549663526L;
  
      @Override
      public void dispose() {
          DisposableHelper.dispose(this);
      }
  
      @Override
      public boolean isDisposed() {
          return get() == DisposableHelper.DISPOSED;
      }
  
      @Override
      public void onComplete() {
          // no-op
          lazySet(DisposableHelper.DISPOSED);
      }
  
      @Override
      public void onError(Throwable e) {
          lazySet(DisposableHelper.DISPOSED);
          RxJavaPlugins.onError(new OnErrorNotImplementedException(e));
      }
  
      @Override
      public void onSubscribe(Disposable d) {
          DisposableHelper.setOnce(this, d);
      }
  
      @Override
      public boolean hasCustomOnError() {
          return false;
      }
  }
  