1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.bcel.generic;
18
19 /**
20 * DUP2_X1 - Duplicate two top operand stack words and put three down
21 *
22 * <PRE>
23 * Stack: ..., word3, word2, word1 -> ..., word2, word1, word3, word2, word1
24 * </PRE>
25 */
26 public class DUP2_X1 extends StackInstruction {
27
28 public DUP2_X1() {
29 super(org.apache.bcel.Const.DUP2_X1);
30 }
31
32 /**
33 * Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call
34 * methods according to the class hierarchy in descending order, i.e., the most specific visitXXX() call comes last.
35 *
36 * @param v Visitor object
37 */
38 @Override
39 public void accept(final Visitor v) {
40 v.visitStackInstruction(this);
41 v.visitDUP2_X1(this);
42 }
43 }