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/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
package com.sun.org.apache.bcel.internal.generic;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache BCEL" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache BCEL", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/**
* Thrown by InstructionList.remove() when one or multiple disposed instruction
* are still being referenced by a InstructionTargeter object. I.e. the
* InstructionTargeter has to be notified that (one of) the InstructionHandle it
* is referencing is being removed from the InstructionList and thus not valid anymore.
*
* Making this an exception instead of a return value forces the user to handle
* these case explicitely in a try { ... } catch. The following code illustrates
* how this may be done:
*
* <PRE>
* ...
* try {
* il.delete(start_ih, end_ih);
* } catch(TargetLostException e) {
* InstructionHandle[] targets = e.getTargets();
* for(int i=0; i < targets.length; i++) {
* InstructionTargeter[] targeters = targets[i].getTargeters();
*
* for(int j=0; j < targeters.length; j++)
* targeters[j].updateTarget(targets[i], new_target);
* }
* }
* </PRE>
*
* @see InstructionHandle
* @see InstructionList
* @see InstructionTargeter
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
*/
public final class TargetLostException extends Exception {
private InstructionHandle[] targets;
TargetLostException(InstructionHandle[] t, String mesg) {
super(mesg);
targets = t;
}
/**
* @return list of instructions still being targeted.
*/
public InstructionHandle[] getTargets() { return targets; }
}
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