1 /* 2 * Copyright (C) 1999-2000 Harri Porten (porten (at) 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 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 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 51 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 67 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
