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.single;
  
  import java.util.concurrent.atomic.AtomicReference;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.internal.disposables.DisposableHelper;
  import io.reactivex.rxjava3.internal.observers.ResumeSingleObserver;
  
  public final class SingleDelayWithCompletable<T> extends Single<T> {
  
      final SingleSource<T> source;
  
      final CompletableSource other;
  
      public SingleDelayWithCompletable(SingleSource<T> source, CompletableSource other) {
          this.source = source;
          this.other = other;
      }
  
      @Override
      protected void subscribeActual(SingleObserver<? super T> observer) {
          other.subscribe(new OtherObserver<>(observer, source));
      }
  
      static final class OtherObserver<T>
      extends AtomicReference<Disposable>
      implements CompletableObserver, Disposable {
  
          private static final long serialVersionUID = -8565274649390031272L;
  
          final SingleObserver<? super T> downstream;
  
          final SingleSource<T> source;
  
          OtherObserver(SingleObserver<? super T> actual, SingleSource<T> source) {
              this.downstream = actual;
              this.source = source;
          }
  
          @Override
          public void onSubscribe(Disposable d) {
              if (DisposableHelper.setOnce(this, d)) {
  
                  downstream.onSubscribe(this);
              }
          }
  
          @Override
          public void onError(Throwable e) {
              downstream.onError(e);
          }
  
          @Override
          public void onComplete() {
              source.subscribe(new ResumeSingleObserver<>(this, downstream));
          }
  
          @Override
          public void dispose() {
              DisposableHelper.dispose(this);
          }
  
          @Override
          public boolean isDisposed() {
              return DisposableHelper.isDisposed(get());
          }
      }
  }
  