io.reactivex.interop.internal.consumers.SubscriberCompletableObserver Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of rxjava3-interop Show documentation

rxjava3-interop developed by David Karnok

The newest version!

/**
 * 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.interop.internal.consumers;

import org.reactivestreams.Subscriber;

import hu.akarnokd.reactivestreams.extensions.FusedQueueSubscription;
import io.reactivex.common.Disposable;
import io.reactivex.common.internal.disposables.DisposableHelper;
import io.reactivex.observable.CompletableObserver;

public final class SubscriberCompletableObserver implements CompletableObserver,
FusedQueueSubscription {
    final Subscriber subscriber;

    Disposable d;

    public SubscriberCompletableObserver(Subscriber observer) {
        this.subscriber = observer;
    }

    @Override
    public void onComplete() {
        subscriber.onComplete();
    }

    @Override
    public void onError(Throwable e) {
        subscriber.onError(e);
    }

    @Override
    public void onSubscribe(Disposable d) {
        if (DisposableHelper.validate(this.d, d)) {
            this.d = d;

            subscriber.onSubscribe(this);
        }
    }

    @Override
    public void request(long n) {
        // ignored, no values emitted anyway
    }

    @Override
    public void cancel() {
        d.dispose();
    }

    @Override
    public boolean offer(T element) {
        throw new UnsupportedOperationException("Should not be called!");
    }

    @Override
    public T poll() throws Throwable {
        return null;
    }

    @Override
    public boolean isEmpty() {
        return true;
    }

    @Override
    public void clear() {
        // deliberately no-op
    }

    @Override
    public int requestFusion(int mode) {
        return mode & ASYNC;
    }
}