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.Observer;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.exceptions.*;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.disposables.DisposableHelper;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  public final class ForEachWhileObserver<T>
  extends AtomicReference<Disposable>
  implements Observer<T>, Disposable {
  
      private static final long serialVersionUID = -4403180040475402120L;
  
      final Predicate<? super T> onNext;
  
      final Consumer<? super Throwable> onError;
  
      final Action onComplete;
  
      boolean done;
  
      public ForEachWhileObserver(Predicate<? super T> onNext,
              Consumer<? super Throwable> onError, Action onComplete) {
          this.onNext = onNext;
          this.onError = onError;
          this.onComplete = onComplete;
      }
  
      @Override
      public void onSubscribe(Disposable d) {
          DisposableHelper.setOnce(this, d);
      }
  
      @Override
      public void onNext(T t) {
          if (done) {
              return;
          }
  
          boolean b;
          try {
              b = onNext.test(t);
          } catch (Throwable ex) {
              Exceptions.throwIfFatal(ex);
              dispose();
              onError(ex);
              return;
          }
  
          if (!b) {
              dispose();
              onComplete();
          }
      }
  
      @Override
      public void onError(Throwable t) {
          if (done) {
              RxJavaPlugins.onError(t);
              return;
          }
          done = true;
          try {
              onError.accept(t);
          } catch (Throwable ex) {
              Exceptions.throwIfFatal(ex);
              RxJavaPlugins.onError(new CompositeException(t, ex));
          }
      }
  
      @Override
      public void onComplete() {
          if (done) {
              return;
          }
          done = true;
          try {
              onComplete.run();
          } catch (Throwable ex) {
              Exceptions.throwIfFatal(ex);
              RxJavaPlugins.onError(ex);
          }
      }
  
      @Override
      public void dispose() {
          DisposableHelper.dispose(this);
      }
  
      @Override
      public boolean isDisposed() {
          return DisposableHelper.isDisposed(this.get());
      }
  }
  