DUP2.java Source File

00001 package de.fub.bytecode.generic;
00002 
00003 /** 
00004  * DUP2 - Duplicate two top operand stack words
00005  * <PRE>Stack: ..., word2, word1 -&gt; ..., word2, word1, word2, word1</PRE>
00006  *
00007  * @version $Id: DUP2.java,v 1.1.1.1 2002/01/24 03:41:39 pserver Exp $
00008  * @author  <A HREF="http://www.inf.fu-berlin.de/~dahm">M. Dahm</A>
00009  */
00010 public class DUP2 extends StackInstruction implements PushInstruction {
00011   public DUP2() {
00012     super(de.fub.bytecode.Constants.DUP2);
00013   }  
00014   /**
00015    * Call corresponding visitor method(s). The order is:
00016    * Call visitor methods of implemented interfaces first, then
00017    * call methods according to the class hierarchy in descending order,
00018    * i.e., the most specific visitXXX() call comes last.
00019    *
00020    * @param v Visitor object
00021    */
00022   public void accept(Visitor v) {
00023     v.visitStackProducer(this);
00024     v.visitPushInstruction(this);
00025     v.visitStackInstruction(this);
00026     v.visitDUP2(this);
00027   }  
00028 }