+++ /dev/null
-package org.aspectj.apache.bcel.generic;
-
-import org.aspectj.apache.bcel.Constants;
-
-/* ====================================================================
- * 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/>.
- */
-
-/**
- * Equality of instructions isn't clearly to be defined. You might
- * wish, for example, to compare whether instructions have the same
- * meaning. E.g., whether two INVOKEVIRTUALs describe the same
- * call.<br>The DEFAULT comparator however, considers two instructions
- * to be equal if they have same opcode and point to the same indexes
- * (if any) in the constant pool or the same local variable index. Branch
- * instructions must have the same target.
- *
- * @see Instruction
- * @version $Id: InstructionComparator.java,v 1.4 2008/05/28 23:52:56 aclement Exp $
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
- */
-public interface InstructionComparator {
- public static final InstructionComparator DEFAULT = new InstructionComparator() {
- public boolean equals(Instruction i1, Instruction i2) {
- if (i1.opcode == i2.opcode) {
- if (i1 instanceof InstructionSelect) {
- InstructionHandle[] t1 = ((InstructionSelect) i1).getTargets();
- InstructionHandle[] t2 = ((InstructionSelect) i2).getTargets();
-
- // See AspectJ bug 104957
- if (t1 == null && t2 == null) return true;
- if (t1 == null || t2 == null) return false;
-
- if (t1.length == t2.length) {
- for (int i = 0; i < t1.length; i++) {
- if (t1[i] != t2[i]) {
- return false;
- }
- }
-
- return true;
- }
- } else if (i1 instanceof InstructionBranch) {
- return ((InstructionBranch) i1).targetInstruction == ((InstructionBranch) i2).targetInstruction;
- } else if (i1.isConstantInstruction()) {
- return i1.getValue().equals(i2.getValue());
- } else if (i1.isIndexedInstruction()) {
- return i1.getIndex() == i2.getIndex();
- } else if (i1.opcode==Constants.NEWARRAY) {
- return ((InstructionByte) i1).getTypecode() == ((InstructionByte) i2)
- .getTypecode();
- } else {
- return true;
- }
- }
-
- return false;
- }
- };
-
- public boolean equals(Instruction i1, Instruction i2);
-}