001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.bcel.generic;
020
021/**
022 * DUP_X1 - Duplicate top operand stack word and put two down
023 *
024 * <PRE>
025 * Stack: ..., word2, word1 -&gt; ..., word1, word2, word1
026 * </PRE>
027 */
028public class DUP_X1 extends StackInstruction {
029
030    /** Constructs a DUP_X1 instruction. */
031    public DUP_X1() {
032        super(org.apache.bcel.Const.DUP_X1);
033    }
034
035    /**
036     * Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call
037     * methods according to the class hierarchy in descending order, that is, 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_X1(this);
045    }
046}