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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.completable;
import java.util.Iterator;
import java.util.concurrent.atomic.AtomicInteger;
import io.reactivex.*;
import io.reactivex.disposables.CompositeDisposable;
import io.reactivex.exceptions.Exceptions;
import io.reactivex.internal.functions.ObjectHelper;
import io.reactivex.internal.operators.completable.CompletableMergeDelayErrorArray.MergeInnerCompletableObserver;
import io.reactivex.internal.util.AtomicThrowable;
public final class CompletableMergeDelayErrorIterable extends Completable {
final Iterable extends CompletableSource> sources;
public CompletableMergeDelayErrorIterable(Iterable extends CompletableSource> sources) {
this.sources = sources;
}
@Override
public void subscribeActual(final CompletableObserver observer) {
final CompositeDisposable set = new CompositeDisposable();
observer.onSubscribe(set);
Iterator extends CompletableSource> iterator;
try {
iterator = ObjectHelper.requireNonNull(sources.iterator(), "The source iterator returned is null");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
observer.onError(e);
return;
}
final AtomicInteger wip = new AtomicInteger(1);
final AtomicThrowable error = new AtomicThrowable();
for (;;) {
if (set.isDisposed()) {
return;
}
boolean b;
try {
b = iterator.hasNext();
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
error.addThrowable(e);
break;
}
if (!b) {
break;
}
if (set.isDisposed()) {
return;
}
CompletableSource c;
try {
c = ObjectHelper.requireNonNull(iterator.next(), "The iterator returned a null CompletableSource");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
error.addThrowable(e);
break;
}
if (set.isDisposed()) {
return;
}
wip.getAndIncrement();
c.subscribe(new MergeInnerCompletableObserver(observer, set, error, wip));
}
if (wip.decrementAndGet() == 0) {
Throwable ex = error.terminate();
if (ex == null) {
observer.onComplete();
} else {
observer.onError(ex);
}
}
}
}
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