/*
 * Copyright  2000-2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); 
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. 
 *
 */
package org.apache.bcel.generic;

/** 
 * DUP2_X2 - Duplicate two top operand stack words and put four down
 * <PRE>Stack: ..., word4, word3, word2, word1 -&gt; ..., word2, word1, word4, word3, word2, word1</PRE>
 *
 * @version $Id: DUP2_X2.java 386056 2006-03-15 11:31:56Z tcurdt $
 * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
 */
public class DUP2_X2 extends StackInstruction {

    public DUP2_X2() {
        super(org.apache.bcel.Constants.DUP2_X2);
    }


    /**
     * Call corresponding visitor method(s). The order is:
     * Call visitor methods of implemented interfaces first, then
     * call methods according to the class hierarchy in descending order,
     * i.e., the most specific visitXXX() call comes last.
     *
     * @param v Visitor object
     */
    public void accept( Visitor v ) {
        v.visitStackInstruction(this);
        v.visitDUP2_X2(this);
    }
}
