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Java > Open Source Codes > com > vladium > jcd > cls > constant > CONSTANT_Long_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_Long_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_Long_info and {@link CONSTANT_Double_info} represent eight-byte
19  * numeric (long and double) constants.<P>
20  *
21  * The unsigned high_bytes and low_bytes items of the CONSTANT_Long_info structure
22  * together contain the value of the long constant
23  * (( long ) high_bytes << 32) + low_bytes , where the bytes of each of high_bytes
24  * and low_bytes are stored in big-endian (high byte first) order.
25  *
26  * @author (C) 2001, Vlad Roubtsov
27  */
28 public
29 final class CONSTANT_Long_info extends CONSTANT_literal_info
30 {
31     // public: ................................................................
32
33     public static final byte TAG = 5;
34     
35     public long m_value;
36     
37     
38     public CONSTANT_Long_info (final long value)
39     {
40         m_value = value;
41     }
42
43     public final byte tag ()
44     {
45         return TAG;
46     }
47     
48     // Visitor:
49
50     public Object JavaDoc accept (final ICONSTANTVisitor visitor, final Object JavaDoc ctx)
51     {
52         return visitor.visit (this, ctx);
53     }
54     
55     public String JavaDoc toString ()
56     {
57         return Long.toString (m_value);
58     }
59     
60     /**
61      * Overrides the default implementation to return '2'.
62      */
63     public int width ()
64     {
65         return 2;
66     }
67     
68     // Cloneable: inherited clone() is Ok
69
70     // IClassFormatOutput:
71
72     public void writeInClassFormat (final UDataOutputStream out) throws IOException JavaDoc
73     {
74         super.writeInClassFormat (out);
75         
76         out.writeLong (m_value);
77     }
78     
79     // protected: .............................................................
80
81     
82     protected CONSTANT_Long_info (final UDataInputStream bytes) throws IOException JavaDoc
83     {
84         m_value = bytes.readLong ();
85     }
86     
87     // package: ...............................................................
88
89     // private: ...............................................................
90
91 } // end of class
92 // ----------------------------------------------------------------------------
93
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