1 /* 2 * Copyright (C) 1999-2000 Harri Porten (porten@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*, double); 35 DateInstance(ExecState*, NonNullPassRefPtr<Structure>, double); 36 explicit DateInstance(ExecState*, NonNullPassRefPtr<Structure>); 37 internalNumber()38 double internalNumber() const { return internalValue().uncheckedGetNumber(); } 39 40 static JS_EXPORTDATA const ClassInfo info; 41 gregorianDateTime(ExecState * exec)42 const GregorianDateTime* gregorianDateTime(ExecState* exec) const 43 { 44 if (m_data && m_data->m_gregorianDateTimeCachedForMS == internalNumber()) 45 return &m_data->m_cachedGregorianDateTime; 46 return calculateGregorianDateTime(exec); 47 } 48 gregorianDateTimeUTC(ExecState * exec)49 const GregorianDateTime* gregorianDateTimeUTC(ExecState* exec) const 50 { 51 if (m_data && m_data->m_gregorianDateTimeUTCCachedForMS == internalNumber()) 52 return &m_data->m_cachedGregorianDateTimeUTC; 53 return calculateGregorianDateTimeUTC(exec); 54 } 55 createStructure(JSValue prototype)56 static PassRefPtr<Structure> createStructure(JSValue prototype) 57 { 58 return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount); 59 } 60 61 protected: 62 static const unsigned StructureFlags = OverridesMarkChildren | JSWrapperObject::StructureFlags; 63 64 private: 65 const GregorianDateTime* calculateGregorianDateTime(ExecState*) const; 66 const GregorianDateTime* calculateGregorianDateTimeUTC(ExecState*) const; classInfo()67 virtual const ClassInfo* classInfo() const { return &info; } 68 69 mutable RefPtr<DateInstanceData> m_data; 70 }; 71 72 DateInstance* asDateInstance(JSValue); 73 asDateInstance(JSValue value)74 inline DateInstance* asDateInstance(JSValue value) 75 { 76 ASSERT(asObject(value)->inherits(&DateInstance::info)); 77 return static_cast<DateInstance*>(asObject(value)); 78 } 79 80 } // namespace JSC 81 82 #endif // DateInstance_h 83