01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.bytecode;
30:
31: import com.caucho.log.Log;
32:
33: import java.io.IOException;
34: import java.util.logging.Logger;
35:
36: /**
37: * Represents a double constant.
38: */
39: public class DoubleConstant extends ConstantPoolEntry {
40: static private final Logger log = Log.open(DoubleConstant.class);
41:
42: private double _value;
43:
44: /**
45: * Creates a new double constant.
46: */
47: DoubleConstant(ConstantPool pool, int index, double value) {
48: super (pool, index);
49:
50: _value = value;
51: }
52:
53: /**
54: * Returns the value;
55: */
56: public double getValue() {
57: return _value;
58: }
59:
60: /**
61: * Writes the contents of the pool entry.
62: */
63: void write(ByteCodeWriter out) throws IOException {
64: out.write(ConstantPool.CP_DOUBLE);
65: out.writeDouble(_value);
66: }
67:
68: /**
69: * Exports to the target pool.
70: */
71: public int export(ConstantPool target) {
72: return target.addDouble(_value).getIndex();
73: }
74:
75: public String toString() {
76: return "DoubleConstant[" + _value + "]";
77: }
78: }
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