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Java > Open Source Codes > com > vladium > jcd > cls > constant > CONSTANT_String_info


1 /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
2  *
3  * This program and the accompanying materials are made available under
4  * the terms of the Common Public License v1.0 which accompanies this distribution,
5  * and is available at http://www.eclipse.org/legal/cpl-v10.html
6  *
7  * $Id: CONSTANT_String_info.java,v 1.1.1.1 2004/05/09 16:57:49 vlad_r Exp $
8  */
9 package com.vladium.jcd.cls.constant;
10
11 import java.io.IOException JavaDoc;
12
13 import com.vladium.jcd.lib.UDataInputStream;
14 import com.vladium.jcd.lib.UDataOutputStream;
15
16 // ----------------------------------------------------------------------------
17 /**
18  * The CONSTANT_String_info structure is used to represent constant objects of
19  * the type java.lang.String.<P>
20  *
21  * The value of the string_index item must be a valid index into the constant pool
22  * table. The constant pool entry at that index must be a {@link CONSTANT_Utf8_info}
23  * structure representing the sequence of characters to which the
24  * java.lang.String object is to be initialized.
25  *
26  * @author (C) 2001, Vlad Roubtsov
27  */
28 public
29 final class CONSTANT_String_info extends CONSTANT_literal_info
30 {
31     // public: ................................................................
32
33     public static final byte TAG = 8;
34     
35     public int m_string_index;
36     
37     
38     public CONSTANT_String_info (final int string_index)
39     {
40         m_string_index = string_index;
41     }
42
43
44     public final byte tag ()
45     {
46         return TAG;
47     }
48     
49     // Visitor:
50
51     public Object JavaDoc accept (final ICONSTANTVisitor visitor, final Object JavaDoc ctx)
52     {
53         return visitor.visit (this, ctx);
54     }
55     
56     public String JavaDoc toString ()
57     {
58         return "CONSTANT_String: [string_index = " + m_string_index + ']';
59     }
60     
61     // Cloneable: inherited clone() is Ok
62
63     // IClassFormatOutput:
64
65     public void writeInClassFormat (final UDataOutputStream out) throws IOException JavaDoc
66     {
67         super.writeInClassFormat (out);
68         
69         out.writeU2 (m_string_index);
70     }
71     
72     // protected: .............................................................
73
74     
75     protected CONSTANT_String_info (final UDataInputStream bytes) throws IOException JavaDoc
76     {
77         m_string_index = bytes.readU2 ();
78     }
79     
80     // package: ...............................................................
81
82     // private: ...............................................................
83
84 } // end of class
85 // ----------------------------------------------------------------------------
86
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