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


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.EvaluationResult;
26
27 import antlr.Token;
28
29 public class StringValue extends AbstractTCLNode {
30
31     private final String JavaDoc value_;
32     private final EvaluationResult result_;
33
34     public StringValue(Token tok) {
35         super(tok);
36         setName("StringValue");
37         value_ = tok.getText();
38         EvaluationResult _result = new EvaluationResult();
39         _result.setString(value_);
40         result_ = EvaluationResult.wrapImmutable(_result);
41     }
42
43     public void acceptInOrder(AbstractTCLVisitor visitor) throws VisitorException {
44         visitor.visitString(this);
45     }
46
47     public void acceptPostOrder(AbstractTCLVisitor visitor) throws VisitorException {
48         visitor.visitString(this);
49     }
50
51     public String JavaDoc toString() {
52         return "'" + value_ + "'";
53     }
54
55     public EvaluationResult evaluate(EvaluationContext context)
56          {
57
58         return result_;
59     }
60
61     public boolean isNumber() {
62         return (value_.length() == 1);
63     }
64
65     public boolean isStatic() {
66         return true;
67     }
68
69     public boolean isString() {
70         return true;
71     }
72
73     public void acceptPreOrder(AbstractTCLVisitor visitor) throws VisitorException {
74         visitor.visitString(this);
75     }
76 }
77
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