/**
* 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.internal.disposables.*;
import io.reactivex.observers.
SerializedObserver;
public final class
ObservableSkipUntil<T, U> extends
AbstractObservableWithUpstream<T, T> {
final
ObservableSource<U>
other;
public
ObservableSkipUntil(
ObservableSource<T>
source,
ObservableSource<U>
other) {
super(
source);
this.
other =
other;
}
@
Override
public void
subscribeActual(
Observer<? super T>
child) {
final
SerializedObserver<T>
serial = new
SerializedObserver<T>(
child);
final
ArrayCompositeDisposable frc = new
ArrayCompositeDisposable(2);
serial.
onSubscribe(
frc);
final
SkipUntilObserver<T>
sus = new
SkipUntilObserver<T>(
serial,
frc);
other.
subscribe(new
SkipUntil(
frc,
sus,
serial));
source.
subscribe(
sus);
}
static final class
SkipUntilObserver<T> implements
Observer<T> {
final
Observer<? super T>
downstream;
final
ArrayCompositeDisposable frc;
Disposable upstream;
volatile boolean
notSkipping;
boolean
notSkippingLocal;
SkipUntilObserver(
Observer<? super T>
actual,
ArrayCompositeDisposable frc) {
this.
downstream =
actual;
this.
frc =
frc;
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
validate(this.
upstream,
d)) {
this.
upstream =
d;
frc.
setResource(0,
d);
}
}
@
Override
public void
onNext(T
t) {
if (
notSkippingLocal) {
downstream.
onNext(
t);
} else
if (
notSkipping) {
notSkippingLocal = true;
downstream.
onNext(
t);
}
}
@
Override
public void
onError(
Throwable t) {
frc.
dispose();
downstream.
onError(
t);
}
@
Override
public void
onComplete() {
frc.
dispose();
downstream.
onComplete();
}
}
final class
SkipUntil implements
Observer<U> {
final
ArrayCompositeDisposable frc;
final
SkipUntilObserver<T>
sus;
final
SerializedObserver<T>
serial;
Disposable upstream;
SkipUntil(
ArrayCompositeDisposable frc,
SkipUntilObserver<T>
sus,
SerializedObserver<T>
serial) {
this.
frc =
frc;
this.
sus =
sus;
this.
serial =
serial;
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
validate(this.
upstream,
d)) {
this.
upstream =
d;
frc.
setResource(1,
d);
}
}
@
Override
public void
onNext(U
t) {
upstream.
dispose();
sus.
notSkipping = true;
}
@
Override
public void
onError(
Throwable t) {
frc.
dispose();
serial.
onError(
t);
}
@
Override
public void
onComplete() {
sus.
notSkipping = true;
}
}
}