| /* |
| * Copyright 2006 Google Inc. |
| * |
| * 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 com.google.gwt.junit.client.impl; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Wraps a {@link Throwable}, and explicitly serializes cause and stack trace. |
| */ |
| final class ExceptionWrapper implements Serializable { |
| |
| /** |
| * Stand-in for the transient {@link Throwable#getCause()} in GWT JRE. |
| */ |
| ExceptionWrapper causeWrapper; |
| |
| /** |
| * The wrapped exception. |
| */ |
| Throwable exception; |
| |
| /** |
| * Stand-in for the transient {@link Throwable#getStackTrace()} in GWT JRE. |
| */ |
| StackTraceElement[] stackTrace; |
| |
| /** |
| * If true, the exception's inner stack trace and cause have been initialized. |
| * Defaults to false immediate after deserialization. |
| */ |
| private transient boolean isExceptionInitialized; |
| |
| /** |
| * Creates an {@link ExceptionWrapper} around an existing {@link Throwable}. |
| * |
| * @param exception the {@link Throwable} to wrap. |
| */ |
| public ExceptionWrapper(Throwable exception) { |
| this.exception = exception; |
| this.stackTrace = exception.getStackTrace(); |
| Throwable cause = exception.getCause(); |
| if (cause != null) { |
| this.causeWrapper = new ExceptionWrapper(cause); |
| } |
| this.isExceptionInitialized = true; |
| } |
| |
| /** |
| * Deserialization constructor. |
| */ |
| ExceptionWrapper() { |
| this.isExceptionInitialized = false; |
| } |
| |
| public Throwable getException() { |
| if (!isExceptionInitialized) { |
| exception.setStackTrace(stackTrace); |
| if (causeWrapper != null) { |
| exception.initCause(causeWrapper.getException()); |
| } |
| isExceptionInitialized = true; |
| } |
| return exception; |
| } |
| } |
| |