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 26namespace JSC { 27 28 class DateInstance : public JSWrapperObject { 29 protected: 30 JS_EXPORT_PRIVATE DateInstance(ExecState*, Structure*); 31 void finishCreation(VM&); 32 JS_EXPORT_PRIVATE void finishCreation(VM&, double); 33 34 static void destroy(JSCell*); 35 36 public: 37 typedef JSWrapperObject Base; 38 39 static DateInstance* create(ExecState* exec, Structure* structure, double date) 40 { 41 DateInstance* instance = new (NotNull, allocateCell<DateInstance>(*exec->heap())) DateInstance(exec, structure); 42 instance->finishCreation(exec->vm(), date); 43 return instance; 44 } 45 46 static DateInstance* create(ExecState* exec, Structure* structure) 47 { 48 DateInstance* instance = new (NotNull, allocateCell<DateInstance>(*exec->heap())) DateInstance(exec, structure); 49 instance->finishCreation(exec->vm()); 50 return instance; 51 } 52 53 double internalNumber() const { return internalValue().asNumber(); } 54 55 static JS_EXPORTDATA const ClassInfo s_info; 56 57 const GregorianDateTime* gregorianDateTime(ExecState* exec) const 58 { 59 if (m_data && m_data->m_gregorianDateTimeCachedForMS == internalNumber()) 60 return &m_data->m_cachedGregorianDateTime; 61 return calculateGregorianDateTime(exec); 62 } 63 64 const GregorianDateTime* gregorianDateTimeUTC(ExecState* exec) const 65 { 66 if (m_data && m_data->m_gregorianDateTimeUTCCachedForMS == internalNumber()) 67 return &m_data->m_cachedGregorianDateTimeUTC; 68 return calculateGregorianDateTimeUTC(exec); 69 } 70 71 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) 72 { 73 return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info); 74 } 75 76 private: 77 const GregorianDateTime* calculateGregorianDateTime(ExecState*) const; 78 const GregorianDateTime* calculateGregorianDateTimeUTC(ExecState*) const; 79 80 mutable RefPtr<DateInstanceData> m_data; 81 }; 82 83 DateInstance* asDateInstance(JSValue); 84 85 inline DateInstance* asDateInstance(JSValue value) 86 { 87 ASSERT(asObject(value)->inherits(&DateInstance::s_info)); 88 return static_cast<DateInstance*>(asObject(value)); 89 } 90 91} // namespace JSC 92 93#endif // DateInstance_h 94