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.operators.completable;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.Disposable;
  
  public final class CompletableFromObservable<T> extends Completable {
  
      final ObservableSource<T> observable;
  
      public CompletableFromObservable(ObservableSource<T> observable) {
          this.observable = observable;
      }
  
      @Override
      protected void subscribeActual(final CompletableObserver observer) {
          observable.subscribe(new CompletableFromObservableObserver<>(observer));
      }
  
      static final class CompletableFromObservableObserver<T> implements Observer<T> {
          final CompletableObserver co;
  
          CompletableFromObservableObserver(CompletableObserver co) {
              this.co = co;
          }
  
          @Override
          public void onSubscribe(Disposable d) {
              co.onSubscribe(d);
          }
  
          @Override
          public void onNext(T value) {
              // Deliberately ignored.
          }
  
          @Override
          public void onError(Throwable e) {
              co.onError(e);
          }
  
          @Override
          public void onComplete() {
              co.onComplete();
          }
      }
  }
  