content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * 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 android.os;
  
  import java.io.IOException;
  
  /**
   * Wrapper class that offers to transport typical {@link Throwable} across a
   * {@link Binder} call. This class is typically used to transport exceptions
   * that cannot be modified to add {@link Parcelable} behavior, such as
   * {@link IOException}.
   * <ul>
   * <li>The wrapped throwable must be defined as system class (that is, it must
   * be in the same {@link ClassLoader} as {@link Parcelable}).
   * <li>The wrapped throwable must support the
   * {@link Throwable#Throwable(String)} constructor.
   * <li>The receiver side must catch any thrown {@link ParcelableException} and
   * call {@link #maybeRethrow(Class)} for all expected exception types.
   * </ul>
   *
   * @hide
   */
  public final class ParcelableException extends RuntimeException implements Parcelable {
      public ParcelableException(Throwable t) {
          super(t);
      }
  
      @SuppressWarnings("unchecked")
      public <T extends Throwable> void maybeRethrow(Class<T> clazz) throws T {
          if (clazz.isAssignableFrom(getCause().getClass())) {
              throw (T) getCause();
          }
      }
  
      /** {@hide} */
      public static Throwable readFromParcel(Parcel in) {
          final String name = in.readString();
          final String msg = in.readString();
          try {
              final Class<?> clazz = Class.forName(name, true, Parcelable.class.getClassLoader());
              if (Throwable.class.isAssignableFrom(clazz)) {
                  return (Throwable) clazz.getConstructor(String.class).newInstance(msg);
              }
          } catch (ReflectiveOperationException e) {
          }
          return new RuntimeException(name + ": " + msg);
      }
  
      /** {@hide} */
      public static void writeToParcel(Parcel out, Throwable t) {
          out.writeString(t.getClass().getName());
          out.writeString(t.getMessage());
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          writeToParcel(dest, getCause());
      }
  
      public static final @android.annotation.NonNull Creator<ParcelableException> CREATOR = new Creator<ParcelableException>() {
          @Override
          public ParcelableException createFromParcel(Parcel source) {
              return new ParcelableException(readFromParcel(source));
          }
  
          @Override
          public ParcelableException[] newArray(int size) {
              return new ParcelableException[size];
          }
      };
  }
  