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/**************************************************************************************
* Copyright (c) Jonas BonŽr, Alexandre Vasseur. All rights reserved. *
* http://aspectwerkz.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the LGPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Utility methods for dealing with stack traces.
*
* @author <a href="mailto:jboner@codehaus.org">Jonas BonŽr </a>
*/
public final class StackTraceHelper {
/**
* Removes the AspectWerkz specific elements from the stack trace.
*
* @param exception the Throwable to modify the stack trace on
* @param className the name of the fake origin class of the exception
*/
public static void hideFrameworkSpecificStackTrace(final Throwable exception, final String className) {
if (exception == null) {
throw new IllegalArgumentException("exception can not be null");
}
if (className == null) {
throw new IllegalArgumentException("class name can not be null");
}
final List newStackTraceList = new ArrayList();
final StackTraceElement[] stackTrace = exception.getStackTrace();
int i;
for (i = 1; i < stackTrace.length; i++) {
if (stackTrace[i].getClassName().equals(className)) {
break;
}
}
for (int j = i; j < stackTrace.length; j++) {
newStackTraceList.add(stackTrace[j]);
}
final StackTraceElement[] newStackTrace = new StackTraceElement[newStackTraceList.size()];
int k = 0;
for (Iterator it = newStackTraceList.iterator(); it.hasNext(); k++) {
final StackTraceElement element = (StackTraceElement) it.next();
newStackTrace[k] = element;
}
exception.setStackTrace(newStackTrace);
}
}
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