01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This program is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * 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: */
21: package proguard.evaluation.value;
22:
23: /**
24: * This class represents a partially evaluated top value. A top value is the
25: * dummy value that takes up the extra space when storing a long value or a
26: * double value.
27: *
28: * @author Eric Lafortune
29: */
30: public class TopValue extends Category1Value {
31: // Implementations for Value.
32:
33: public final Value generalize(Value other) {
34: return this .getClass() == other.getClass() ? this : null;
35: }
36:
37: public final int computationalType() {
38: return TYPE_TOP;
39: }
40:
41: public final String internalType() {
42: return null;
43: }
44:
45: // Implementations for Object.
46:
47: public boolean equals(Object object) {
48: return object != null && this .getClass() == object.getClass();
49: }
50:
51: public int hashCode() {
52: return this .getClass().hashCode();
53: }
54:
55: public String toString() {
56: return "T";
57: }
58: }
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