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 */
018package org.apache.bcel.generic;
019
020/**
021 * DUP_X2 - Duplicate top operand stack word and put three down
022 * <PRE>Stack: ..., word3, word2, word1 -&gt; ..., word1, word3, word2, word1</PRE>
023 *
024 */
025public class DUP_X2 extends StackInstruction {
026
027    public DUP_X2() {
028        super(org.apache.bcel.Const.DUP_X2);
029    }
030
031
032    /**
033     * Call corresponding visitor method(s). The order is:
034     * Call visitor methods of implemented interfaces first, then
035     * call methods according to the class hierarchy in descending order,
036     * i.e., the most specific visitXXX() call comes last.
037     *
038     * @param v Visitor object
039     */
040    @Override
041    public void accept( final Visitor v ) {
042        v.visitStackInstruction(this);
043        v.visitDUP_X2(this);
044    }
045}