01: /*
02: *
03: *
04: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: */
26:
27: /*
28: * Represents a CONSTANT_Double or CONSTANT_Long
29: * Should be read or written one whole word after another.
30: */
31: package components;
32:
33: import java.io.DataInput;
34: import java.io.DataOutput;
35: import java.io.IOException;
36: import jcc.Const;
37:
38: public class DoubleValueConstant extends ConstantObject {
39: // The two words of the constant
40: public int highVal;
41: public int lowVal;
42:
43: private DoubleValueConstant(int t, int h, int l) {
44: tag = t;
45: highVal = h;
46: lowVal = l;
47: nSlots = 2;
48: }
49:
50: public static ConstantObject read(int t, DataInput i)
51: throws IOException {
52: return new DoubleValueConstant(t, i.readInt(), i.readInt());
53: }
54:
55: public void write(DataOutput o) throws IOException {
56: o.writeByte(tag);
57: o.writeInt(highVal);
58: o.writeInt(lowVal);
59: }
60:
61: public String toString() {
62: String t = (tag == Const.CONSTANT_DOUBLE) ? "Double [ "
63: : "Long [ ";
64: return t + Integer.toHexString(highVal) + " "
65: + Integer.toHexString(lowVal) + " ]";
66: }
67:
68: public int hashCode() {
69: return tag + highVal + lowVal;
70: }
71:
72: public boolean equals(Object o) {
73: if (o instanceof DoubleValueConstant) {
74: DoubleValueConstant d = (DoubleValueConstant) o;
75: return tag == d.tag && highVal == d.highVal
76: && lowVal == d.lowVal;
77: } else {
78: return false;
79: }
80: }
81:
82: public boolean isResolved() {
83: return true;
84: }
85: }
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