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Java > Open Source Codes > org > jacorb > notification > filter > etcl > MultOperator


1 package org.jacorb.notification.filter.etcl;
2
3 /*
4  * JacORB - a free Java ORB
5  *
6  * Copyright (C) 1999-2004 Gerald Brose
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Library General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Library General Public License for more details.
17  *
18  * You should have received a copy of the GNU Library General Public
19  * License along with this library; if not, write to the Free
20  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  */
23
24 import org.jacorb.notification.filter.EvaluationContext;
25 import org.jacorb.notification.filter.EvaluationException;
26 import org.jacorb.notification.filter.EvaluationResult;
27
28 import antlr.Token;
29
30 /**
31  * A simple node to represent MULT operation
32  *
33  * @version $Id: MultOperator.java,v 1.5 2005/02/14 00:07:08 alphonse.bendt Exp $
34  */
35
36 public class MultOperator extends BinaryOperator
37 {
38
39     public MultOperator(Token tok)
40     {
41         super(tok);
42         setName("MultOperator");
43     }
44
45     public String JavaDoc toString()
46     {
47         return " *";
48     }
49
50     public EvaluationResult evaluate(EvaluationContext context, EvaluationResult left,
51             EvaluationResult right) throws EvaluationException
52     {
53
54         return EvaluationResult.mult(right, left);
55     }
56
57     public void acceptInOrder(AbstractTCLVisitor visitor) throws VisitorException
58     {
59         left().acceptInOrder(visitor);
60         visitor.visitMult(this);
61         right().acceptInOrder(visitor);
62     }
63
64     public void acceptPostOrder(AbstractTCLVisitor visitor) throws VisitorException
65     {
66         left().acceptPostOrder(visitor);
67         right().acceptPostOrder(visitor);
68         visitor.visitMult(this);
69     }
70
71     public void acceptPreOrder(AbstractTCLVisitor visitor) throws VisitorException
72     {
73         visitor.visitMult(this);
74         left().acceptPreOrder(visitor);
75         right().acceptPreOrder(visitor);
76     }
77 }
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