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/*
* 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.rxjava3.internal.operators.mixed;
import java.util.Objects;
import java.util.concurrent.atomic.*;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.disposables.Disposable;
import io.reactivex.rxjava3.exceptions.Exceptions;
import io.reactivex.rxjava3.functions.Function;
import io.reactivex.rxjava3.internal.disposables.DisposableHelper;
import io.reactivex.rxjava3.internal.util.AtomicThrowable;
import io.reactivex.rxjava3.plugins.RxJavaPlugins;
/**
* Maps the upstream items into {@link MaybeSource}s and switches (subscribes) to the newer ones
* while disposing the older ones and emits the latest success value if available, optionally delaying
* errors from the main source or the inner sources.
* History: 2.1.11 - experimental
* @param the upstream value type
* @param the downstream value type
* @since 2.2
*/
public final class ObservableSwitchMapMaybe extends Observable {
final Observable source;
final Function super T, ? extends MaybeSource extends R>> mapper;
final boolean delayErrors;
public ObservableSwitchMapMaybe(Observable source,
Function super T, ? extends MaybeSource extends R>> mapper,
boolean delayErrors) {
this.source = source;
this.mapper = mapper;
this.delayErrors = delayErrors;
}
@Override
protected void subscribeActual(Observer super R> observer) {
if (!ScalarXMapZHelper.tryAsMaybe(source, mapper, observer)) {
source.subscribe(new SwitchMapMaybeMainObserver<>(observer, mapper, delayErrors));
}
}
static final class SwitchMapMaybeMainObserver extends AtomicInteger
implements Observer, Disposable {
private static final long serialVersionUID = -5402190102429853762L;
final Observer super R> downstream;
final Function super T, ? extends MaybeSource extends R>> mapper;
final boolean delayErrors;
final AtomicThrowable errors;
final AtomicReference> inner;
static final SwitchMapMaybeObserver