1 /*
2 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
18 * USA
19 *
20 */
21
22 #include "config.h"
23 #include "DateInstance.h"
24
25 #include "JSGlobalObject.h"
26
27 #include <math.h>
28 #include <wtf/DateMath.h>
29 #include <wtf/MathExtras.h>
30
31 using namespace WTF;
32
33 namespace JSC {
34
35 const ClassInfo DateInstance::s_info = {"Date", &JSWrapperObject::s_info, 0, 0};
36
DateInstance(ExecState * exec,Structure * structure)37 DateInstance::DateInstance(ExecState* exec, Structure* structure)
38 : JSWrapperObject(exec->globalData(), structure)
39 {
40 ASSERT(inherits(&s_info));
41 setInternalValue(exec->globalData(), jsNaN());
42 }
43
DateInstance(ExecState * exec,Structure * structure,double time)44 DateInstance::DateInstance(ExecState* exec, Structure* structure, double time)
45 : JSWrapperObject(exec->globalData(), structure)
46 {
47 ASSERT(inherits(&s_info));
48 setInternalValue(exec->globalData(), jsNumber(timeClip(time)));
49 }
50
calculateGregorianDateTime(ExecState * exec) const51 const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const
52 {
53 double milli = internalNumber();
54 if (isnan(milli))
55 return 0;
56
57 if (!m_data)
58 m_data = exec->globalData().dateInstanceCache.add(milli);
59
60 if (m_data->m_gregorianDateTimeCachedForMS != milli) {
61 msToGregorianDateTime(exec, milli, false, m_data->m_cachedGregorianDateTime);
62 m_data->m_gregorianDateTimeCachedForMS = milli;
63 }
64 return &m_data->m_cachedGregorianDateTime;
65 }
66
calculateGregorianDateTimeUTC(ExecState * exec) const67 const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const
68 {
69 double milli = internalNumber();
70 if (isnan(milli))
71 return 0;
72
73 if (!m_data)
74 m_data = exec->globalData().dateInstanceCache.add(milli);
75
76 if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {
77 msToGregorianDateTime(exec, milli, true, m_data->m_cachedGregorianDateTimeUTC);
78 m_data->m_gregorianDateTimeUTCCachedForMS = milli;
79 }
80 return &m_data->m_cachedGregorianDateTimeUTC;
81 }
82
83 } // namespace JSC
84