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.flowable;
  
  import org.reactivestreams.Subscriber;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.internal.subscribers.SinglePostCompleteSubscriber;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  public final class FlowableMaterialize<T> extends AbstractFlowableWithUpstream<T, Notification<T>> {
  
      public FlowableMaterialize(Flowable<T> source) {
          super(source);
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super Notification<T>> s) {
          source.subscribe(new MaterializeSubscriber<>(s));
      }
  
      static final class MaterializeSubscriber<T> extends SinglePostCompleteSubscriber<T, Notification<T>> {
  
          private static final long serialVersionUID = -3740826063558713822L;
  
          MaterializeSubscriber(Subscriber<? super Notification<T>> downstream) {
              super(downstream);
          }
  
          @Override
          public void onNext(T t) {
              produced++;
              downstream.onNext(Notification.createOnNext(t));
          }
  
          @Override
          public void onError(Throwable t) {
              complete(Notification.createOnError(t));
          }
  
          @Override
          public void onComplete() {
              complete(Notification.createOnComplete());
          }
  
          @Override
          protected void onDrop(Notification<T> n) {
              if (n.isOnError()) {
                  RxJavaPlugins.onError(n.getError());
              }
          }
      }
  }
  