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 -> ..., word1, word3, word2, word1</PRE> 023 * 024 * @version $Id: DUP_X2.java 1747278 2016-06-07 17:28:43Z britter $ 025 */ 026public class DUP_X2 extends StackInstruction { 027 028 public DUP_X2() { 029 super(org.apache.bcel.Const.DUP_X2); 030 } 031 032 033 /** 034 * Call corresponding visitor method(s). The order is: 035 * Call visitor methods of implemented interfaces first, then 036 * call methods according to the class hierarchy in descending order, 037 * i.e., the most specific visitXXX() call comes last. 038 * 039 * @param v Visitor object 040 */ 041 @Override 042 public void accept( final Visitor v ) { 043 v.visitStackInstruction(this); 044 v.visitDUP_X2(this); 045 } 046}