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Java > Open Source Codes > proguard > classfile > attribute > annotation > ClassElementValue


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This library is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This library is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
15  * for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this library; if not, write to the Free Software Foundation,
19  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.classfile.attribute.annotation;
22
23 import proguard.classfile.*;
24 import proguard.classfile.visitor.ClassVisitor;
25 import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
26
27 import java.io.*;
28
29 /**
30  * This ElementValue represents a class element value.
31  *
32  * @author Eric Lafortune
33  */
34 public class ClassElementValue extends ElementValue
35 {
36     public int u2classInfoIndex;
37
38     /**
39      * An extra field pointing to the Clazz objects referenced in the
40      * type name string. This field is filled out by the <code>{@link
41      * proguard.classfile.util.ClassReferenceInitializer ClassReferenceInitializer}</code>.
42      * References to primitive types are ignored.
43      */
44     public Clazz[] referencedClasses;
45
46
47     /**
48      * Creates an uninitialized ClassElementValue.
49      */
50     public ClassElementValue()
51     {
52     }
53
54
55     /**
56      * Applies the given visitor to all referenced classes.
57      */
58     public void referencedClassesAccept(ClassVisitor classVisitor)
59     {
60         if (referencedClasses != null)
61         {
62             for (int index = 0; index < referencedClasses.length; index++)
63             {
64                 Clazz referencedClass = referencedClasses[index];
65                 if (referencedClass != null)
66                 {
67                     referencedClass.accept(classVisitor);
68                 }
69             }
70         }
71     }
72
73
74     // Implementations for ElementValue.
75
76     public int getTag()
77     {
78         return ClassConstants.ELEMENT_VALUE_CLASS;
79     }
80
81     public void accept(Clazz clazz, Annotation annotation, ElementValueVisitor elementValueVisitor)
82     {
83         elementValueVisitor.visitClassElementValue(clazz, annotation, this);
84     }
85 }
86
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