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/*
 * Copyright 2016-2018 David Karnok
 *
 * 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 hu.akarnokd.rxjava2.debug;

import hu.akarnokd.rxjava2.debug.CompletableOnAssembly.OnAssemblyCompletableObserver;
import io.reactivex.*;
import io.reactivex.internal.fuseable.ScalarCallable;

/**
 * Wraps a CompletableSource and inject the assembly info.
 */
final class CompletableOnAssemblyScalarCallable extends Completable implements ScalarCallable {

    final CompletableSource source;

    final RxJavaAssemblyException assembled;

    CompletableOnAssemblyScalarCallable(CompletableSource source) {
        this.source = source;
        this.assembled = new RxJavaAssemblyException();
    }

    @Override
    protected void subscribeActual(CompletableObserver s) {
        source.subscribe(new OnAssemblyCompletableObserver(s, assembled));
    }

    @SuppressWarnings("unchecked")
    @Override
    public Object call() {
        return ((ScalarCallable)source).call();
    }
}