2 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
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.
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.
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
23 #include "DateInstance.h"
25 #include "JSGlobalObject.h"
28 #include <wtf/DateMath.h>
29 #include <wtf/MathExtras.h>
35 const ClassInfo DateInstance::s_info = {"Date", &JSWrapperObject::s_info, 0, 0};
37 DateInstance::DateInstance(ExecState* exec, Structure* structure)
38 : JSWrapperObject(exec->globalData(), structure)
42 void DateInstance::finishCreation(JSGlobalData& globalData)
44 Base::finishCreation(globalData);
45 ASSERT(inherits(&s_info));
46 setInternalValue(globalData, jsNaN());
49 void DateInstance::finishCreation(JSGlobalData& globalData, double time)
51 Base::finishCreation(globalData);
52 ASSERT(inherits(&s_info));
53 setInternalValue(globalData, jsNumber(timeClip(time)));
56 const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const
58 double milli = internalNumber();
63 m_data = exec->globalData().dateInstanceCache.add(milli);
65 if (m_data->m_gregorianDateTimeCachedForMS != milli) {
66 msToGregorianDateTime(exec, milli, false, m_data->m_cachedGregorianDateTime);
67 m_data->m_gregorianDateTimeCachedForMS = milli;
69 return &m_data->m_cachedGregorianDateTime;
72 const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const
74 double milli = internalNumber();
79 m_data = exec->globalData().dateInstanceCache.add(milli);
81 if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {
82 msToGregorianDateTime(exec, milli, true, m_data->m_cachedGregorianDateTimeUTC);
83 m_data->m_gregorianDateTimeUTCCachedForMS = milli;
85 return &m_data->m_cachedGregorianDateTimeUTC;