| /* |
| * 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/>. |
| */ |
| import com.sun.org.apache.bcel.internal.Constants; |
| import java.util.Objects; |
| |
| /** |
| * Returnaddress, the type JSR or JSR_W instructions push upon the stack. |
| * |
| * see vmspec2 3.3.3 |
| * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase">Enver Haase</A> |
| */ |
| public class ReturnaddressType extends Type { |
| |
| public static final ReturnaddressType NO_TARGET = new ReturnaddressType(); |
| private InstructionHandle returnTarget; |
| |
| /** |
| * A Returnaddress [that doesn't know where to return to]. |
| */ |
| private ReturnaddressType(){ |
| super(Constants.T_ADDRESS, "<return address>"); |
| } |
| |
| /** |
| * Creates a ReturnaddressType object with a target. |
| */ |
| public ReturnaddressType(InstructionHandle returnTarget) { |
| super(Constants.T_ADDRESS, "<return address targeting "+returnTarget+">"); |
| this.returnTarget = returnTarget; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(this.returnTarget); |
| } |
| |
| /** |
| * Returns if the two Returnaddresses refer to the same target. |
| */ |
| @Override |
| public boolean equals(Object rat){ |
| if(!(rat instanceof ReturnaddressType)) |
| return false; |
| |
| return ((ReturnaddressType)rat).returnTarget.equals(this.returnTarget); |
| } |
| |
| /** |
| * @return the target of this ReturnaddressType |
| */ |
| public InstructionHandle getTarget(){ |
| return returnTarget; |
| } |
| } |