code: /*
   * 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.completable;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.*;
  import io.reactivex.rxjava3.exceptions.Exceptions;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  public final class CompletableFromRunnable extends Completable {
  
      final Runnable runnable;
  
      public CompletableFromRunnable(Runnable runnable) {
          this.runnable = runnable;
      }
  
      @Override
      protected void subscribeActual(CompletableObserver observer) {
          Disposable d = Disposable.empty();
          observer.onSubscribe(d);
          if (!d.isDisposed()) {
              try {
                  runnable.run();
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  if (!d.isDisposed()) {
                      observer.onError(e);
                  } else {
                      RxJavaPlugins.onError(e);
                  }
                  return;
              }
              if (!d.isDisposed()) {
                  observer.onComplete();
              }
          }
      }
  }
  