IdentifiedValueFactory.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.evaluation.value;
22
23import proguard.classfile.*;
24import proguard.classfile.util.ClassUtil;
25
26/**
27 * This class provides methods to create and reuse IntegerValue objects.
28 *
29 * @author Eric Lafortune
30 */
31public class IdentifiedValueFactory
32extends      SpecificValueFactory
33{
34    private int integerID;
35    private int longID;
36    private int floatID;
37    private int doubleID;
38    private int referenceID;
39
40
41    // Implementations for ValueFactory.
42
43    public IntegerValue createIntegerValue()
44    {
45        return new IdentifiedIntegerValue(this, integerID++);
46    }
47
48
49    public LongValue createLongValue()
50    {
51        return new IdentifiedLongValue(this, longID++);
52    }
53
54
55    public FloatValue createFloatValue()
56    {
57        return new IdentifiedFloatValue(this, floatID++);
58    }
59
60
61    public DoubleValue createDoubleValue()
62    {
63        return new IdentifiedDoubleValue(this, doubleID++);
64    }
65
66
67    public ReferenceValue createReferenceValue(String  type,
68                                               Clazz   referencedClass,
69                                               boolean mayBeNull)
70    {
71        return type == null ?
72            REFERENCE_VALUE_NULL :
73            new IdentifiedReferenceValue(type, referencedClass, mayBeNull, this, referenceID++);
74    }
75}