NameAndTypeConstant.java revision b72c5c2e5482cf10117b2b25f642f7616b2326c3 
1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
6 *
7 * This program 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 program 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 General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21package proguard.classfile.constant;
22
23import proguard.classfile.*;
24import proguard.classfile.constant.visitor.ConstantVisitor;
25
26/**
27 * This Constant represents a name and type constant in the constant pool.
28 *
29 * @author Eric Lafortune
30 */
31public class NameAndTypeConstant extends Constant
32{
33    public int u2nameIndex;
34    public int u2descriptorIndex;
35
36
37    /**
38     * Creates an uninitialized NameAndTypeConstant.
39     */
40    public NameAndTypeConstant()
41    {
42    }
43
44
45    /**
46     * Creates a new NameAndTypeConstant with the given name and type indices.
47     * @param u2nameIndex       the index of the name in the constant pool.
48     * @param u2descriptorIndex the index of the descriptor in the constant
49     *                          pool.
50     */
51    public NameAndTypeConstant(int u2nameIndex,
52                               int u2descriptorIndex)
53    {
54        this.u2nameIndex       = u2nameIndex;
55        this.u2descriptorIndex = u2descriptorIndex;
56    }
57
58
59    /**
60     * Returns the name index.
61     */
62    protected int getNameIndex()
63    {
64        return u2nameIndex;
65    }
66
67    /**
68     * Sets the name index.
69     */
70    protected void setNameIndex(int index)
71    {
72        u2nameIndex = index;
73    }
74
75    /**
76     * Returns the descriptor index.
77     */
78    protected int getDescriptorIndex()
79    {
80        return u2descriptorIndex;
81    }
82
83    /**
84     * Sets the descriptor index.
85     */
86    protected void setDescriptorIndex(int index)
87    {
88        u2descriptorIndex = index;
89    }
90
91    /**
92     * Returns the name.
93     */
94    public String getName(Clazz clazz)
95    {
96        return clazz.getString(u2nameIndex);
97    }
98
99    /**
100     * Returns the type.
101     */
102    public String getType(Clazz clazz)
103    {
104        return clazz.getString(u2descriptorIndex);
105    }
106
107
108    // Implementations for Constant.
109
110    public int getTag()
111    {
112        return ClassConstants.CONSTANT_NameAndType;
113    }
114
115    public void accept(Clazz clazz, ConstantVisitor constantVisitor)
116    {
117        constantVisitor.visitNameAndTypeConstant(clazz, this);
118    }
119}
120