| 1 | /* |
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| 2 | * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
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| 3 | * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU Lesser General Public |
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| 7 | * License as published by the Free Software Foundation; either |
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| 8 | * version 2 of the License, or (at your option) any later version. |
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| 9 | * |
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| 10 | * This library is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Lesser General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Lesser General Public |
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| 16 | * License along with this library; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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| 18 | * USA |
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| 19 | * |
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| 20 | */ |
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| 21 | |
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| 22 | #include "config.h" |
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| 23 | #include "DateInstance.h" |
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| 24 | |
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| 25 | #include "JSGlobalObject.h" |
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| 26 | |
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| 27 | #include <wtf/DateMath.h> |
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| 28 | #include <wtf/MathExtras.h> |
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| 29 | |
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| 30 | using namespace WTF; |
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| 31 | |
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| 32 | namespace JSC { |
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| 33 | |
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| 34 | const ClassInfo DateInstance::info = {.className: "Date" , .parentClass: 0, .staticPropHashTable: 0, .classPropHashTableGetterFunction: 0}; |
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| 35 | |
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| 36 | DateInstance::DateInstance(ExecState* exec, NonNullPassRefPtr<Structure> structure) |
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| 37 | : JSWrapperObject(structure) |
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| 38 | { |
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| 39 | setInternalValue(jsNaN(exec)); |
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| 40 | } |
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| 41 | |
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| 42 | DateInstance::DateInstance(ExecState* exec, double time) |
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| 43 | : JSWrapperObject(exec->lexicalGlobalObject()->dateStructure()) |
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| 44 | { |
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| 45 | setInternalValue(jsNumber(exec, d: timeClip(time))); |
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| 46 | } |
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| 47 | |
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| 48 | const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const |
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| 49 | { |
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| 50 | double milli = internalNumber(); |
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| 51 | if (std::isnan(x: milli)) |
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| 52 | return 0; |
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| 53 | |
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| 54 | if (!m_data) |
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| 55 | m_data = exec->globalData().dateInstanceCache.add(d: milli); |
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| 56 | |
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| 57 | if (m_data->m_gregorianDateTimeCachedForMS != milli) { |
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| 58 | msToGregorianDateTime(exec, milli, outputIsUTC: false, m_data->m_cachedGregorianDateTime); |
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| 59 | m_data->m_gregorianDateTimeCachedForMS = milli; |
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| 60 | } |
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| 61 | return &m_data->m_cachedGregorianDateTime; |
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| 62 | } |
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| 63 | |
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| 64 | const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const |
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| 65 | { |
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| 66 | double milli = internalNumber(); |
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| 67 | if (std::isnan(x: milli)) |
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| 68 | return 0; |
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| 69 | |
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| 70 | if (!m_data) |
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| 71 | m_data = exec->globalData().dateInstanceCache.add(d: milli); |
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| 72 | |
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| 73 | if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) { |
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| 74 | msToGregorianDateTime(exec, milli, outputIsUTC: true, m_data->m_cachedGregorianDateTimeUTC); |
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| 75 | m_data->m_gregorianDateTimeUTCCachedForMS = milli; |
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| 76 | } |
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| 77 | return &m_data->m_cachedGregorianDateTimeUTC; |
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| 78 | } |
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| 79 | |
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| 80 | } // namespace JSC |
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| 81 | |
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