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Reactive Extensions for Java
/**
* 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.flowable;
import org.reactivestreams.Subscriber;
import io.reactivex.Flowable;
import io.reactivex.annotations.Nullable;
import io.reactivex.exceptions.*;
import io.reactivex.functions.*;
import io.reactivex.internal.fuseable.ConditionalSubscriber;
import io.reactivex.internal.subscribers.*;
import io.reactivex.internal.util.ExceptionHelper;
import io.reactivex.plugins.RxJavaPlugins;
public final class FlowableDoOnEach extends AbstractFlowableWithUpstream {
final Consumer onNext;
final Consumer onError;
final Action onComplete;
final Action onAfterTerminate;
public FlowableDoOnEach(Flowable source, Consumer onNext,
Consumer onError,
Action onComplete,
Action onAfterTerminate) {
super(source);
this.onNext = onNext;
this.onError = onError;
this.onComplete = onComplete;
this.onAfterTerminate = onAfterTerminate;
}
@Override
protected void subscribeActual(Subscriber s) {
if (s instanceof ConditionalSubscriber) {
source.subscribe(new DoOnEachConditionalSubscriber(
(ConditionalSubscriber)s, onNext, onError, onComplete, onAfterTerminate));
} else {
source.subscribe(new DoOnEachSubscriber(
s, onNext, onError, onComplete, onAfterTerminate));
}
}
static final class DoOnEachSubscriber extends BasicFuseableSubscriber {
final Consumer onNext;
final Consumer onError;
final Action onComplete;
final Action onAfterTerminate;
DoOnEachSubscriber(
Subscriber actual,
Consumer onNext,
Consumer onError,
Action onComplete,
Action onAfterTerminate) {
super(actual);
this.onNext = onNext;
this.onError = onError;
this.onComplete = onComplete;
this.onAfterTerminate = onAfterTerminate;
}
@Override
public void onNext(T t) {
if (done) {
return;
}
if (sourceMode != NONE) {
downstream.onNext(null);
return;
}
try {
onNext.accept(t);
} catch (Throwable e) {
fail(e);
return;
}
downstream.onNext(t);
}
@Override
public void onError(Throwable t) {
if (done) {
RxJavaPlugins.onError(t);
return;
}
done = true;
boolean relay = true;
try {
onError.accept(t);
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
downstream.onError(new CompositeException(t, e));
relay = false;
}
if (relay) {
downstream.onError(t);
}
try {
onAfterTerminate.run();
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
RxJavaPlugins.onError(e);
}
}
@Override
public void onComplete() {
if (done) {
return;
}
try {
onComplete.run();
} catch (Throwable e) {
fail(e);
return;
}
done = true;
downstream.onComplete();
try {
onAfterTerminate.run();
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
RxJavaPlugins.onError(e);
}
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public T poll() throws Exception {
T v;
try {
v = qs.poll();
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
try {
onError.accept(ex);
} catch (Throwable exc) {
throw new CompositeException(ex, exc);
}
throw ExceptionHelper.throwIfThrowable(ex);
}
if (v != null) {
try {
try {
onNext.accept(v);
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
try {
onError.accept(ex);
} catch (Throwable exc) {
throw new CompositeException(ex, exc);
}
throw ExceptionHelper.throwIfThrowable(ex);
}
} finally {
onAfterTerminate.run();
}
} else {
if (sourceMode == SYNC) {
onComplete.run();
onAfterTerminate.run();
}
}
return v;
}
}
static final class DoOnEachConditionalSubscriber extends BasicFuseableConditionalSubscriber {
final Consumer onNext;
final Consumer onError;
final Action onComplete;
final Action onAfterTerminate;
DoOnEachConditionalSubscriber(
ConditionalSubscriber actual,
Consumer onNext,
Consumer onError,
Action onComplete,
Action onAfterTerminate) {
super(actual);
this.onNext = onNext;
this.onError = onError;
this.onComplete = onComplete;
this.onAfterTerminate = onAfterTerminate;
}
@Override
public void onNext(T t) {
if (done) {
return;
}
if (sourceMode != NONE) {
downstream.onNext(null);
return;
}
try {
onNext.accept(t);
} catch (Throwable e) {
fail(e);
return;
}
downstream.onNext(t);
}
@Override
public boolean tryOnNext(T t) {
if (done) {
return false;
}
try {
onNext.accept(t);
} catch (Throwable e) {
fail(e);
return false;
}
return downstream.tryOnNext(t);
}
@Override
public void onError(Throwable t) {
if (done) {
RxJavaPlugins.onError(t);
return;
}
done = true;
boolean relay = true;
try {
onError.accept(t);
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
downstream.onError(new CompositeException(t, e));
relay = false;
}
if (relay) {
downstream.onError(t);
}
try {
onAfterTerminate.run();
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
RxJavaPlugins.onError(e);
}
}
@Override
public void onComplete() {
if (done) {
return;
}
try {
onComplete.run();
} catch (Throwable e) {
fail(e);
return;
}
done = true;
downstream.onComplete();
try {
onAfterTerminate.run();
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
RxJavaPlugins.onError(e);
}
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public T poll() throws Exception {
T v;
try {
v = qs.poll();
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
try {
onError.accept(ex);
} catch (Throwable exc) {
throw new CompositeException(ex, exc);
}
throw ExceptionHelper.throwIfThrowable(ex);
}
if (v != null) {
try {
try {
onNext.accept(v);
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
try {
onError.accept(ex);
} catch (Throwable exc) {
throw new CompositeException(ex, exc);
}
throw ExceptionHelper.throwIfThrowable(ex);
}
} finally {
onAfterTerminate.run();
}
} else {
if (sourceMode == SYNC) {
onComplete.run();
onAfterTerminate.run();
}
}
return v;
}
}
}
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