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 ObjectConstructor_h 22#define ObjectConstructor_h 23 24#include "InternalFunction.h" 25#include "JSGlobalObject.h" 26#include "ObjectPrototype.h" 27 28namespace JSC { 29 30 class ObjectPrototype; 31 32 class ObjectConstructor : public InternalFunction { 33 public: 34 typedef InternalFunction Base; 35 36 static ObjectConstructor* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, ObjectPrototype* objectPrototype) 37 { 38 ObjectConstructor* constructor = new (NotNull, allocateCell<ObjectConstructor>(*exec->heap())) ObjectConstructor(globalObject, structure); 39 constructor->finishCreation(exec, objectPrototype); 40 return constructor; 41 } 42 43 static bool getOwnPropertySlot(JSCell*, ExecState*, PropertyName, PropertySlot&); 44 static bool getOwnPropertyDescriptor(JSObject*, ExecState*, PropertyName, PropertyDescriptor&); 45 46 static const ClassInfo s_info; 47 48 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) 49 { 50 return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info); 51 } 52 53 protected: 54 void finishCreation(ExecState*, ObjectPrototype*); 55 static const unsigned StructureFlags = OverridesGetOwnPropertySlot | InternalFunction::StructureFlags; 56 57 private: 58 ObjectConstructor(JSGlobalObject*, Structure*); 59 static ConstructType getConstructData(JSCell*, ConstructData&); 60 static CallType getCallData(JSCell*, CallData&); 61 }; 62 63 inline JSObject* constructEmptyObject(ExecState* exec, Structure* structure) 64 { 65 return JSFinalObject::create(exec, structure); 66 } 67 68 inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype, unsigned inlineCapacity) 69 { 70 JSGlobalObject* globalObject = exec->lexicalGlobalObject(); 71 PrototypeMap& prototypeMap = globalObject->vm().prototypeMap; 72 Structure* structure = prototypeMap.emptyObjectStructureForPrototype( 73 prototype, inlineCapacity); 74 return constructEmptyObject(exec, structure); 75 } 76 77 inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype) 78 { 79 return constructEmptyObject(exec, prototype, JSFinalObject::defaultInlineCapacity()); 80 } 81 82 inline JSObject* constructEmptyObject(ExecState* exec) 83 { 84 return constructEmptyObject(exec, exec->lexicalGlobalObject()->objectPrototype()); 85 } 86 87} // namespace JSC 88 89#endif // ObjectConstructor_h 90