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.
/** * 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.internal.operators.observable; import io.reactivex.*; import io.reactivex.disposables.Disposable; import io.reactivex.exceptions.Exceptions; import io.reactivex.functions.Predicate; import io.reactivex.internal.disposables.DisposableHelper; import io.reactivex.plugins.RxJavaPlugins; public final class ObservableAny<T> extends AbstractObservableWithUpstream<T, Boolean> { final Predicate<? super T> predicate; public ObservableAny(ObservableSource<T> source, Predicate<? super T> predicate) { super(source); this.predicate = predicate; } @Override protected void subscribeActual(Observer<? super Boolean> t) { source.subscribe(new AnyObserver<T>(t, predicate)); } static final class AnyObserver<T> implements Observer<T>, Disposable { final Observer<? super Boolean> downstream; final Predicate<? super T> predicate; Disposable upstream; boolean done; AnyObserver(Observer<? super Boolean> actual, Predicate<? super T> predicate) { this.downstream = actual; this.predicate = predicate; } @Override public void onSubscribe(Disposable d) { if (DisposableHelper.validate(this.upstream, d)) { this.upstream = d; downstream.onSubscribe(this); } } @Override public void onNext(T t) { if (done) { return; } boolean b; try { b = predicate.test(t); } catch (Throwable e) { Exceptions.throwIfFatal(e); upstream.dispose(); onError(e); return; } if (b) { done = true; upstream.dispose(); downstream.onNext(true); downstream.onComplete(); } } @Override public void onError(Throwable t) { if (done) { RxJavaPlugins.onError(t); return; } done = true; downstream.onError(t); } @Override public void onComplete() { if (!done) { done = true; downstream.onNext(false); downstream.onComplete(); } } @Override public void dispose() { upstream.dispose(); } @Override public boolean isDisposed() { return upstream.isDisposed(); } } }