io.reactivex.rxjava3.internal.operators.flowable.FlowableDoAfterNext Maven / Gradle / Ivy
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/*
* 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.flowable;
import org.reactivestreams.Subscriber;
import io.reactivex.rxjava3.annotations.Nullable;
import io.reactivex.rxjava3.core.Flowable;
import io.reactivex.rxjava3.functions.Consumer;
import io.reactivex.rxjava3.internal.subscribers.*;
import io.reactivex.rxjava3.operators.ConditionalSubscriber;
/**
* Calls a consumer after pushing the current item to the downstream.
* History: 2.0.1 - experimental
* @param the value type
* @since 2.1
*/
public final class FlowableDoAfterNext extends AbstractFlowableWithUpstream {
final Consumer super T> onAfterNext;
public FlowableDoAfterNext(Flowable source, Consumer super T> onAfterNext) {
super(source);
this.onAfterNext = onAfterNext;
}
@Override
protected void subscribeActual(Subscriber super T> s) {
if (s instanceof ConditionalSubscriber) {
source.subscribe(new DoAfterConditionalSubscriber<>((ConditionalSubscriber super T>) s, onAfterNext));
} else {
source.subscribe(new DoAfterSubscriber<>(s, onAfterNext));
}
}
static final class DoAfterSubscriber extends BasicFuseableSubscriber {
final Consumer super T> onAfterNext;
DoAfterSubscriber(Subscriber super T> actual, Consumer super T> onAfterNext) {
super(actual);
this.onAfterNext = onAfterNext;
}
@Override
public void onNext(T t) {
if (done) {
return;
}
downstream.onNext(t);
if (sourceMode == NONE) {
try {
onAfterNext.accept(t);
} catch (Throwable ex) {
fail(ex);
}
}
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public T poll() throws Throwable {
T v = qs.poll();
if (v != null) {
onAfterNext.accept(v);
}
return v;
}
}
static final class DoAfterConditionalSubscriber extends BasicFuseableConditionalSubscriber {
final Consumer super T> onAfterNext;
DoAfterConditionalSubscriber(ConditionalSubscriber super T> actual, Consumer super T> onAfterNext) {
super(actual);
this.onAfterNext = onAfterNext;
}
@Override
public void onNext(T t) {
downstream.onNext(t);
if (sourceMode == NONE) {
try {
onAfterNext.accept(t);
} catch (Throwable ex) {
fail(ex);
}
}
}
@Override
public boolean tryOnNext(T t) {
boolean b = downstream.tryOnNext(t);
try {
onAfterNext.accept(t);
} catch (Throwable ex) {
fail(ex);
}
return b;
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public T poll() throws Throwable {
T v = qs.poll();
if (v != null) {
onAfterNext.accept(v);
}
return v;
}
}
}