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 "JSDateMath.h"
26#include "JSGlobalObject.h"
27#include "JSCInlines.h"
28#include <math.h>
29#include <wtf/MathExtras.h>
30
31namespace JSC {
32
33using namespace WTF;
34
35const ClassInfo DateInstance::s_info = {"Date", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(DateInstance)};
36
37DateInstance::DateInstance(VM& vm, Structure* structure)
38 : Base(vm, structure)
39{
40}
41
42void DateInstance::finishCreation(VM& vm)
43{
44 Base::finishCreation(vm);
45 ASSERT(inherits(vm, info()));
46}
47
48void DateInstance::finishCreation(VM& vm, double time)
49{
50 Base::finishCreation(vm);
51 ASSERT(inherits(vm, info()));
52 m_internalNumber = timeClip(time);
53}
54
55void DateInstance::destroy(JSCell* cell)
56{
57 static_cast<DateInstance*>(cell)->DateInstance::~DateInstance();
58}
59
60const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const
61{
62 double milli = internalNumber();
63 if (std::isnan(milli))
64 return 0;
65
66 VM& vm = exec->vm();
67 if (!m_data)
68 m_data = vm.dateInstanceCache.add(milli);
69
70 if (m_data->m_gregorianDateTimeCachedForMS != milli) {
71 msToGregorianDateTime(vm, milli, WTF::LocalTime, m_data->m_cachedGregorianDateTime);
72 m_data->m_gregorianDateTimeCachedForMS = milli;
73 }
74 return &m_data->m_cachedGregorianDateTime;
75}
76
77const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const
78{
79 double milli = internalNumber();
80 if (std::isnan(milli))
81 return 0;
82
83 VM& vm = exec->vm();
84 if (!m_data)
85 m_data = vm.dateInstanceCache.add(milli);
86
87 if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {
88 msToGregorianDateTime(vm, milli, WTF::UTCTime, m_data->m_cachedGregorianDateTimeUTC);
89 m_data->m_gregorianDateTimeUTCCachedForMS = milli;
90 }
91 return &m_data->m_cachedGregorianDateTimeUTC;
92}
93
94} // namespace JSC
95