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104 lines
4.2 KiB
104 lines
4.2 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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package com.sun.org.apache.bcel.internal.generic;
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache BCEL" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache BCEL", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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/**
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* Thrown by InstructionList.remove() when one or multiple disposed instruction
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* are still being referenced by a InstructionTargeter object. I.e. the
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* InstructionTargeter has to be notified that (one of) the InstructionHandle it
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* is referencing is being removed from the InstructionList and thus not valid anymore.
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*
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* Making this an exception instead of a return value forces the user to handle
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* these case explicitely in a try { ... } catch. The following code illustrates
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* how this may be done:
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*
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* <PRE>
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* ...
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* try {
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* il.delete(start_ih, end_ih);
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* } catch(TargetLostException e) {
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* InstructionHandle[] targets = e.getTargets();
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* for(int i=0; i < targets.length; i++) {
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* InstructionTargeter[] targeters = targets[i].getTargeters();
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*
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* for(int j=0; j < targeters.length; j++)
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* targeters[j].updateTarget(targets[i], new_target);
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* }
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* }
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* </PRE>
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*
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* @see InstructionHandle
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* @see InstructionList
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* @see InstructionTargeter
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* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
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*/
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public final class TargetLostException extends Exception {
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private InstructionHandle[] targets;
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TargetLostException(InstructionHandle[] t, String mesg) {
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super(mesg);
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targets = t;
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}
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/**
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* @return list of instructions still being targeted.
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*/
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public InstructionHandle[] getTargets() { return targets; }
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}
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