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;
  import io.reactivex.rxjava3.exceptions.*;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.disposables.*;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  public final class CompletablePeek extends Completable {
  
      final CompletableSource source;
      final Consumer<? super Disposable> onSubscribe;
      final Consumer<? super Throwable> onError;
      final Action onComplete;
      final Action onTerminate;
      final Action onAfterTerminate;
      final Action onDispose;
  
      public CompletablePeek(CompletableSource source, Consumer<? super Disposable> onSubscribe,
                             Consumer<? super Throwable> onError,
                             Action onComplete,
                             Action onTerminate,
                             Action onAfterTerminate,
                             Action onDispose) {
          this.source = source;
          this.onSubscribe = onSubscribe;
          this.onError = onError;
          this.onComplete = onComplete;
          this.onTerminate = onTerminate;
          this.onAfterTerminate = onAfterTerminate;
          this.onDispose = onDispose;
      }
  
      @Override
      protected void subscribeActual(final CompletableObserver observer) {
  
          source.subscribe(new CompletableObserverImplementation(observer));
      }
  
      final class CompletableObserverImplementation implements CompletableObserver, Disposable {
  
          final CompletableObserver downstream;
  
          Disposable upstream;
  
          CompletableObserverImplementation(CompletableObserver downstream) {
              this.downstream = downstream;
          }
  
          @Override
          public void onSubscribe(final Disposable d) {
              try {
                  onSubscribe.accept(d);
              } catch (Throwable ex) {
                  Exceptions.throwIfFatal(ex);
                  d.dispose();
                  this.upstream = DisposableHelper.DISPOSED;
                  EmptyDisposable.error(ex, downstream);
                  return;
              }
              if (DisposableHelper.validate(this.upstream, d)) {
                  this.upstream = d;
                  downstream.onSubscribe(this);
              }
          }
  
          @Override
          public void onError(Throwable e) {
              if (upstream == DisposableHelper.DISPOSED) {
                  RxJavaPlugins.onError(e);
                  return;
              }
              try {
                  onError.accept(e);
                  onTerminate.run();
              } catch (Throwable ex) {
                  Exceptions.throwIfFatal(ex);
                  e = new CompositeException(e, ex);
              }
  
              downstream.onError(e);
  
              doAfter();
          }
  
          @Override
          public void onComplete() {
              if (upstream == DisposableHelper.DISPOSED) {
                  return;
              }
  
              try {
                  onComplete.run();
                  onTerminate.run();
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  downstream.onError(e);
                  return;
              }
  
              downstream.onComplete();
  
              doAfter();
          }
  
          void doAfter() {
              try {
                  onAfterTerminate.run();
              } catch (Throwable ex) {
                  Exceptions.throwIfFatal(ex);
                  RxJavaPlugins.onError(ex);
              }
          }
  
          @Override
          public void dispose() {
              try {
                  onDispose.run();
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  RxJavaPlugins.onError(e);
              }
              upstream.dispose();
          }
  
          @Override
          public boolean isDisposed() {
              return upstream.isDisposed();
          }
      }
  }
  