com.google.gwt.junit.client.impl.ExceptionWrapper Maven / Gradle / Ivy
/*
* 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;
}
}