/**
* 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);
}
}
}
}