/**
* 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.maybe;
import java.util.concurrent.atomic.
AtomicReference;
import org.reactivestreams.*;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.internal.disposables.
DisposableHelper;
import io.reactivex.internal.subscriptions.
SubscriptionHelper;
import io.reactivex.plugins.
RxJavaPlugins;
/**
* Relays the main source's event unless the other Publisher signals an item first or just completes
* at which point the resulting Maybe is completed.
*
* @param <T> the value type
* @param <U> the other's value type
*/
public final class
MaybeTakeUntilPublisher<T, U> extends
AbstractMaybeWithUpstream<T, T> {
final
Publisher<U>
other;
public
MaybeTakeUntilPublisher(
MaybeSource<T>
source,
Publisher<U>
other) {
super(
source);
this.
other =
other;
}
@
Override
protected void
subscribeActual(
MaybeObserver<? super T>
observer) {
TakeUntilMainMaybeObserver<T, U>
parent = new
TakeUntilMainMaybeObserver<T, U>(
observer);
observer.
onSubscribe(
parent);
other.
subscribe(
parent.
other);
source.
subscribe(
parent);
}
static final class
TakeUntilMainMaybeObserver<T, U>
extends
AtomicReference<
Disposable> implements
MaybeObserver<T>,
Disposable {
private static final long
serialVersionUID = -2187421758664251153L;
final
MaybeObserver<? super T>
downstream;
final
TakeUntilOtherMaybeObserver<U>
other;
TakeUntilMainMaybeObserver(
MaybeObserver<? super T>
downstream) {
this.
downstream =
downstream;
this.
other = new
TakeUntilOtherMaybeObserver<U>(this);
}
@
Override
public void
dispose() {
DisposableHelper.
dispose(this);
SubscriptionHelper.
cancel(
other);
}
@
Override
public boolean
isDisposed() {
return
DisposableHelper.
isDisposed(
get());
}
@
Override
public void
onSubscribe(
Disposable d) {
DisposableHelper.
setOnce(this,
d);
}
@
Override
public void
onSuccess(T
value) {
SubscriptionHelper.
cancel(
other);
if (
getAndSet(
DisposableHelper.
DISPOSED) !=
DisposableHelper.
DISPOSED) {
downstream.
onSuccess(
value);
}
}
@
Override
public void
onError(
Throwable e) {
SubscriptionHelper.
cancel(
other);
if (
getAndSet(
DisposableHelper.
DISPOSED) !=
DisposableHelper.
DISPOSED) {
downstream.
onError(
e);
} else {
RxJavaPlugins.
onError(
e);
}
}
@
Override
public void
onComplete() {
SubscriptionHelper.
cancel(
other);
if (
getAndSet(
DisposableHelper.
DISPOSED) !=
DisposableHelper.
DISPOSED) {
downstream.
onComplete();
}
}
void
otherError(
Throwable e) {
if (
DisposableHelper.
dispose(this)) {
downstream.
onError(
e);
} else {
RxJavaPlugins.
onError(
e);
}
}
void
otherComplete() {
if (
DisposableHelper.
dispose(this)) {
downstream.
onComplete();
}
}
static final class
TakeUntilOtherMaybeObserver<U>
extends
AtomicReference<
Subscription> implements
FlowableSubscriber<U> {
private static final long
serialVersionUID = -1266041316834525931L;
final
TakeUntilMainMaybeObserver<?, U>
parent;
TakeUntilOtherMaybeObserver(
TakeUntilMainMaybeObserver<?, U>
parent) {
this.
parent =
parent;
}
@
Override
public void
onSubscribe(
Subscription s) {
SubscriptionHelper.
setOnce(this,
s,
Long.
MAX_VALUE);
}
@
Override
public void
onNext(
Object value) {
SubscriptionHelper.
cancel(this);
parent.
otherComplete();
}
@
Override
public void
onError(
Throwable e) {
parent.
otherError(
e);
}
@
Override
public void
onComplete() {
parent.
otherComplete();
}
}
}
}