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.exceptions.Exceptions;
  import io.reactivex.rxjava3.functions.Supplier;
  import io.reactivex.rxjava3.internal.disposables.EmptyDisposable;
  
  import java.util.Objects;
  
  public final class CompletableErrorSupplier extends Completable {
  
      final Supplier<? extends Throwable> errorSupplier;
  
      public CompletableErrorSupplier(Supplier<? extends Throwable> errorSupplier) {
          this.errorSupplier = errorSupplier;
      }
  
      @Override
      protected void subscribeActual(CompletableObserver observer) {
          Throwable error;
  
          try {
              error = Objects.requireNonNull(errorSupplier.get(), "The error returned is null");
          } catch (Throwable e) {
              Exceptions.throwIfFatal(e);
              error = e;
          }
  
          EmptyDisposable.error(error, observer);
      }
  
  }
  