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Java > Open Source Codes > freemarker > core > Case


1 /*
2  * Copyright (c) 2003 The Visigoth Software Society. All rights
3  * reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in
14  * the documentation and/or other materials provided with the
15  * distribution.
16  *
17  * 3. The end-user documentation included with the redistribution, if
18  * any, must include the following acknowledgement:
19  * "This product includes software developed by the
20  * Visigoth Software Society (http://www.visigoths.org/)."
21  * Alternately, this acknowledgement may appear in the software itself,
22  * if and wherever such third-party acknowledgements normally appear.
23  *
24  * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
25  * project contributors may be used to endorse or promote products derived
26  * from this software without prior written permission. For written
27  * permission, please contact visigoths@visigoths.org.
28  *
29  * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
30  * nor may "FreeMarker" or "Visigoth" appear in their names
31  * without prior written permission of the Visigoth Software Society.
32  *
33  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
34  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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41  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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43  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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45  * ====================================================================
46  *
47  * This software consists of voluntary contributions made by many
48  * individuals on behalf of the Visigoth Software Society. For more
49  * information on the Visigoth Software Society, please see
50  * http://www.visigoths.org/
51  */
52
53 package freemarker.core;
54
55 import java.io.IOException JavaDoc;
56 import freemarker.template.*;
57
58 /**
59  * Represents a case in a switch statement.
60  */
61 final class Case extends TemplateElement {
62
63
64     // might as well just make these package-visible
65 // so the Switch can use them, no need to be too anal-retentive
66 boolean isDefault;
67     Expression expression;
68
69     Case(Expression expression, TemplateElement nestedBlock, boolean isDefault)
70     {
71         this.expression = expression;
72         this.nestedBlock = nestedBlock;
73         this.isDefault = isDefault;
74     }
75
76     void accept(Environment env)
77         throws TemplateException, IOException JavaDoc
78     {
79         if (nestedBlock != null) {
80             env.visit(nestedBlock);
81         }
82     }
83
84     public String JavaDoc getCanonicalForm() {
85         StringBuffer JavaDoc buf = new StringBuffer JavaDoc();
86         if (isDefault) {
87             buf.append("<#default>");
88         }
89         else {
90             buf.append("<#case ");
91             buf.append(expression.getCanonicalForm());
92             buf.append(">");
93         }
94         if (nestedBlock != null) {
95             buf.append(nestedBlock.getCanonicalForm());
96         }
97         return buf.toString();
98     }
99
100     public String JavaDoc getDescription() {
101         if (isDefault) {
102             return "default case";
103         }
104         return "case " + expression;
105     }
106 }
107
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