1 /*
2 * Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
3 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
4 * Copyright (C) 2004, 2007, 2008 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23 #include "config.h"
24 #include "JSNumberCell.h"
25
26 #include "NumberObject.h"
27 #include "UString.h"
28
29 namespace JSC {
30
31 #if !USE(ALTERNATE_JSIMMEDIATE)
32
toPrimitive(ExecState *,PreferredPrimitiveType) const33 JSValuePtr JSNumberCell::toPrimitive(ExecState*, PreferredPrimitiveType) const
34 {
35 return const_cast<JSNumberCell*>(this);
36 }
37
getPrimitiveNumber(ExecState *,double & number,JSValuePtr & value)38 bool JSNumberCell::getPrimitiveNumber(ExecState*, double& number, JSValuePtr& value)
39 {
40 number = m_value;
41 value = this;
42 return true;
43 }
44
toBoolean(ExecState *) const45 bool JSNumberCell::toBoolean(ExecState*) const
46 {
47 return m_value < 0.0 || m_value > 0.0; // false for NaN
48 }
49
toNumber(ExecState *) const50 double JSNumberCell::toNumber(ExecState*) const
51 {
52 return m_value;
53 }
54
toString(ExecState *) const55 UString JSNumberCell::toString(ExecState*) const
56 {
57 if (m_value == 0.0) // +0.0 or -0.0
58 return "0";
59 return UString::from(m_value);
60 }
61
toThisString(ExecState *) const62 UString JSNumberCell::toThisString(ExecState*) const
63 {
64 if (m_value == 0.0) // +0.0 or -0.0
65 return "0";
66 return UString::from(m_value);
67 }
68
toObject(ExecState * exec) const69 JSObject* JSNumberCell::toObject(ExecState* exec) const
70 {
71 return constructNumber(exec, const_cast<JSNumberCell*>(this));
72 }
73
toThisObject(ExecState * exec) const74 JSObject* JSNumberCell::toThisObject(ExecState* exec) const
75 {
76 return constructNumber(exec, const_cast<JSNumberCell*>(this));
77 }
78
getUInt32(uint32_t & uint32) const79 bool JSNumberCell::getUInt32(uint32_t& uint32) const
80 {
81 uint32 = static_cast<uint32_t>(m_value);
82 return uint32 == m_value;
83 }
84
getTruncatedInt32(int32_t & int32) const85 bool JSNumberCell::getTruncatedInt32(int32_t& int32) const
86 {
87 if (!(m_value >= -2147483648.0 && m_value < 2147483648.0))
88 return false;
89 int32 = static_cast<int32_t>(m_value);
90 return true;
91 }
92
getTruncatedUInt32(uint32_t & uint32) const93 bool JSNumberCell::getTruncatedUInt32(uint32_t& uint32) const
94 {
95 if (!(m_value >= 0.0 && m_value < 4294967296.0))
96 return false;
97 uint32 = static_cast<uint32_t>(m_value);
98 return true;
99 }
100
getJSNumber()101 JSValuePtr JSNumberCell::getJSNumber()
102 {
103 return this;
104 }
105
jsNumberCell(ExecState * exec,double d)106 JSValuePtr jsNumberCell(ExecState* exec, double d)
107 {
108 return new (exec) JSNumberCell(exec, d);
109 }
110
jsNumberCell(JSGlobalData * globalData,double d)111 JSValuePtr jsNumberCell(JSGlobalData* globalData, double d)
112 {
113 return new (globalData) JSNumberCell(globalData, d);
114 }
115
116 #else
117
118 JSValuePtr jsNumberCell(ExecState*, double)
119 {
120 ASSERT_NOT_REACHED();
121 return noValue();
122 }
123
124 #endif
125
126 } // namespace JSC
127