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Java > Open Source Codes > com > caucho > bytecode > NameAndTypeConstant


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.bytecode;
30
31 import com.caucho.log.Log;
32
33 import java.io.IOException JavaDoc;
34 import java.util.logging.Logger JavaDoc;
35
36 /**
37  * Represents a name and type ref in the constant pool.
38  */
39 public class NameAndTypeConstant extends ConstantPoolEntry {
40   static private final Logger JavaDoc log = Log.open(NameAndTypeConstant.class);
41
42   private int _nameIndex;
43   private int _descriptorIndex;
44
45   /**
46    * Creates a new name-and-type ref constant.
47    */
48   NameAndTypeConstant(ConstantPool pool, int index,
49               int nameIndex, int descriptorIndex)
50   {
51     super(pool, index);
52
53     _nameIndex = nameIndex;
54     _descriptorIndex = descriptorIndex;
55   }
56
57   /**
58    * Returns the name
59    */
60   public String JavaDoc getName()
61   {
62     return getConstantPool().getUtf8(_nameIndex).getValue();
63   }
64
65   /**
66    * Returns the type descriptor
67    */
68   public String JavaDoc getType()
69   {
70     return getConstantPool().getUtf8(_descriptorIndex).getValue();
71   }
72
73   /**
74    * Writes the contents of the pool entry.
75    */
76   void write(ByteCodeWriter out)
77     throws IOException JavaDoc
78   {
79     out.write(ConstantPool.CP_NAME_AND_TYPE);
80     out.writeShort(_nameIndex);
81     out.writeShort(_descriptorIndex);
82   }
83
84   /**
85    * Exports to the target pool.
86    */
87   public int export(ConstantPool target)
88   {
89     return target.addNameAndType(getName(), getType()).getIndex();
90   }
91
92   public String JavaDoc toString()
93   {
94     return "NameAndTypeConstant[" + getName() + ", " + getType() + "]";
95   }
96 }
97
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