001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License. 
016     *
017     */
018    package org.apache.bcel.generic;
019    
020    /** 
021     * IFNE - Branch if int comparison with zero succeeds
022     *
023     * <PRE>Stack: ..., value -&gt; ...</PRE>
024     *
025     * @version $Id: IFNE.java 1152072 2011-07-29 01:54:05Z dbrosius $
026     * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
027     */
028    public class IFNE extends IfInstruction {
029    
030        private static final long serialVersionUID = -5417647524534847152L;
031    
032    
033        /**
034         * Empty constructor needed for the Class.newInstance() statement in
035         * Instruction.readInstruction(). Not to be used otherwise.
036         */
037        IFNE() {
038        }
039    
040    
041        public IFNE(InstructionHandle target) {
042            super(org.apache.bcel.Constants.IFNE, target);
043        }
044    
045    
046        /**
047         * @return negation of instruction
048         */
049        @Override
050        public IfInstruction negate() {
051            return new IFEQ(target);
052        }
053    
054    
055        /**
056         * Call corresponding visitor method(s). The order is:
057         * Call visitor methods of implemented interfaces first, then
058         * call methods according to the class hierarchy in descending order,
059         * i.e., the most specific visitXXX() call comes last.
060         *
061         * @param v Visitor object
062         */
063        @Override
064        public void accept( Visitor v ) {
065            v.visitStackConsumer(this);
066            v.visitBranchInstruction(this);
067            v.visitIfInstruction(this);
068            v.visitIFNE(this);
069        }
070    }