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


1 /*
2  * JacORB - a free Java ORB
3  *
4  * Copyright (C) 1999-2004 Gerald Brose
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public
17  * License along with this library; if not, write to the Free
18  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  *
20  */
21
22 package org.jacorb.notification.filter.etcl;
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  * @author Alphonse Bendt
32  * @version $Id: UnaryOperator.java,v 1.2 2005/02/14 00:07:08 alphonse.bendt Exp $
33  */
34 abstract class UnaryOperator extends AbstractTCLNode
35 {
36     public UnaryOperator(Token tok)
37     {
38         super(tok);
39     }
40
41     public final EvaluationResult evaluate(EvaluationContext context) throws EvaluationException {
42         EvaluationResult _left = left().evaluate(context);
43
44         return evaluate(context, _left);
45     }
46     
47     protected abstract EvaluationResult evaluate(EvaluationContext context,
48             EvaluationResult left) throws EvaluationException;
49     
50 }
51
52
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