1/* 2 * Copyright (C) 2006, 2008, 2012 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21#ifndef PropertyNameArray_h 22#define PropertyNameArray_h 23 24#include "CallFrame.h" 25#include "Identifier.h" 26#include <wtf/HashSet.h> 27#include <wtf/OwnArrayPtr.h> 28#include <wtf/Vector.h> 29 30namespace JSC { 31 32 class Structure; 33 class StructureChain; 34 35 // FIXME: Rename to PropertyNameArray. 36 class PropertyNameArrayData : public RefCounted<PropertyNameArrayData> { 37 public: 38 typedef Vector<Identifier, 20> PropertyNameVector; 39 40 static PassRefPtr<PropertyNameArrayData> create() { return adoptRef(new PropertyNameArrayData); } 41 42 PropertyNameVector& propertyNameVector() { return m_propertyNameVector; } 43 44 private: 45 PropertyNameArrayData() 46 { 47 } 48 49 PropertyNameVector m_propertyNameVector; 50 }; 51 52 // FIXME: Rename to PropertyNameArrayBuilder. 53 class PropertyNameArray { 54 public: 55 PropertyNameArray(VM* vm) 56 : m_data(PropertyNameArrayData::create()) 57 , m_vm(vm) 58 , m_numCacheableSlots(0) 59 , m_baseObject(0) 60 { 61 } 62 63 PropertyNameArray(ExecState* exec) 64 : m_data(PropertyNameArrayData::create()) 65 , m_vm(&exec->vm()) 66 , m_numCacheableSlots(0) 67 , m_baseObject(0) 68 { 69 } 70 71 VM* vm() { return m_vm; } 72 73 void add(const Identifier& identifier) { add(identifier.impl()); } 74 JS_EXPORT_PRIVATE void add(StringImpl*); 75 void addKnownUnique(StringImpl* identifier) { m_data->propertyNameVector().append(Identifier(m_vm, identifier)); } 76 77 Identifier& operator[](unsigned i) { return m_data->propertyNameVector()[i]; } 78 const Identifier& operator[](unsigned i) const { return m_data->propertyNameVector()[i]; } 79 80 void setData(PassRefPtr<PropertyNameArrayData> data) { m_data = data; } 81 PropertyNameArrayData* data() { return m_data.get(); } 82 PassRefPtr<PropertyNameArrayData> releaseData() { return m_data.release(); } 83 84 // FIXME: Remove these functions. 85 typedef PropertyNameArrayData::PropertyNameVector::const_iterator const_iterator; 86 size_t size() const { return m_data->propertyNameVector().size(); } 87 const_iterator begin() const { return m_data->propertyNameVector().begin(); } 88 const_iterator end() const { return m_data->propertyNameVector().end(); } 89 90 size_t numCacheableSlots() const { return m_numCacheableSlots; } 91 void setNumCacheableSlotsForObject(JSObject* object, size_t numCacheableSlots) 92 { 93 if (object != m_baseObject) 94 return; 95 m_numCacheableSlots = numCacheableSlots; 96 } 97 void setBaseObject(JSObject* object) 98 { 99 if (m_baseObject) 100 return; 101 m_baseObject = object; 102 } 103 104 private: 105 typedef HashSet<StringImpl*, PtrHash<StringImpl*> > IdentifierSet; 106 107 RefPtr<PropertyNameArrayData> m_data; 108 IdentifierSet m_set; 109 VM* m_vm; 110 size_t m_numCacheableSlots; 111 JSObject* m_baseObject; 112 }; 113 114} // namespace JSC 115 116#endif // PropertyNameArray_h 117