1 /* 2 * Copyright (C) 1999-2000 Harri Porten (porten (at) kde.org) 3 * Copyright (C) 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 USA 18 * 19 */ 20 21 #ifndef DateInstance_h 22 #define DateInstance_h 23 24 #include "JSWrapperObject.h" 25 26 namespace WTF { 27 struct GregorianDateTime; 28 } 29 30 namespace JSC { 31 32 class DateInstance : public JSWrapperObject { 33 public: 34 DateInstance(ExecState*, Structure*, double); 35 explicit DateInstance(ExecState*, Structure*); 36 37 double internalNumber() const { return internalValue().uncheckedGetNumber(); } 38 39 static JS_EXPORTDATA const ClassInfo s_info; 40 41 const GregorianDateTime* gregorianDateTime(ExecState* exec) const 42 { 43 if (m_data && m_data->m_gregorianDateTimeCachedForMS == internalNumber()) 44 return &m_data->m_cachedGregorianDateTime; 45 return calculateGregorianDateTime(exec); 46 } 47 48 const GregorianDateTime* gregorianDateTimeUTC(ExecState* exec) const 49 { 50 if (m_data && m_data->m_gregorianDateTimeUTCCachedForMS == internalNumber()) 51 return &m_data->m_cachedGregorianDateTimeUTC; 52 return calculateGregorianDateTimeUTC(exec); 53 } 54 55 static Structure* createStructure(JSGlobalData& globalData, JSValue prototype) 56 { 57 return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info); 58 } 59 60 private: 61 const GregorianDateTime* calculateGregorianDateTime(ExecState*) const; 62 const GregorianDateTime* calculateGregorianDateTimeUTC(ExecState*) const; 63 64 mutable RefPtr<DateInstanceData> m_data; 65 }; 66 67 DateInstance* asDateInstance(JSValue); 68 69 inline DateInstance* asDateInstance(JSValue value) 70 { 71 ASSERT(asObject(value)->inherits(&DateInstance::s_info)); 72 return static_cast<DateInstance*>(asObject(value)); 73 } 74 75 } // namespace JSC 76 77 #endif // DateInstance_h 78
