1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 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
23/**
24 * This IntegerValue represents a integer value that is negated.
25 *
26 * @author Eric Lafortune
27 */
28final class NegatedIntegerValue extends SpecificIntegerValue
29{
30    private final IntegerValue integerValue;
31
32
33    /**
34     * Creates a new negated integer value of the given integer value.
35     */
36    public NegatedIntegerValue(IntegerValue integerValue)
37    {
38        this.integerValue = integerValue;
39    }
40
41
42    // Implementations of unary methods of IntegerValue.
43
44    public IntegerValue negate()
45    {
46        return integerValue;
47    }
48
49
50    // Implementations for Object.
51
52    public boolean equals(Object object)
53    {
54        return this == object ||
55               super.equals(object) &&
56               this.integerValue.equals(((NegatedIntegerValue)object).integerValue);
57    }
58
59
60    public int hashCode()
61    {
62        return super.hashCode() ^
63               integerValue.hashCode();
64    }
65
66
67    public String toString()
68    {
69        return "-"+integerValue;
70    }
71}