1 /*
2  *  Copyright (C) 2006, 2008 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 
30 namespace 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 
create()40         static PassRefPtr<PropertyNameArrayData> create() { return adoptRef(new PropertyNameArrayData); }
41 
propertyNameVector()42         PropertyNameVector& propertyNameVector() { return m_propertyNameVector; }
43 
44     private:
PropertyNameArrayData()45         PropertyNameArrayData()
46         {
47         }
48 
49         PropertyNameVector m_propertyNameVector;
50     };
51 
52     // FIXME: Rename to PropertyNameArrayBuilder.
53     class PropertyNameArray {
54     public:
PropertyNameArray(JSGlobalData * globalData)55         PropertyNameArray(JSGlobalData* globalData)
56             : m_data(PropertyNameArrayData::create())
57             , m_globalData(globalData)
58             , m_shouldCache(true)
59         {
60         }
61 
PropertyNameArray(ExecState * exec)62         PropertyNameArray(ExecState* exec)
63             : m_data(PropertyNameArrayData::create())
64             , m_globalData(&exec->globalData())
65             , m_shouldCache(true)
66         {
67         }
68 
globalData()69         JSGlobalData* globalData() { return m_globalData; }
70 
add(const Identifier & identifier)71         void add(const Identifier& identifier) { add(identifier.ustring().rep()); }
72         void add(UString::Rep*);
addKnownUnique(UString::Rep * identifier)73         void addKnownUnique(UString::Rep* identifier) { m_data->propertyNameVector().append(Identifier(m_globalData, identifier)); }
74 
75         Identifier& operator[](unsigned i) { return m_data->propertyNameVector()[i]; }
76         const Identifier& operator[](unsigned i) const { return m_data->propertyNameVector()[i]; }
77 
setData(PassRefPtr<PropertyNameArrayData> data)78         void setData(PassRefPtr<PropertyNameArrayData> data) { m_data = data; }
data()79         PropertyNameArrayData* data() { return m_data.get(); }
releaseData()80         PassRefPtr<PropertyNameArrayData> releaseData() { return m_data.release(); }
81 
82         // FIXME: Remove these functions.
83         typedef PropertyNameArrayData::PropertyNameVector::const_iterator const_iterator;
size()84         size_t size() const { return m_data->propertyNameVector().size(); }
begin()85         const_iterator begin() const { return m_data->propertyNameVector().begin(); }
end()86         const_iterator end() const { return m_data->propertyNameVector().end(); }
87 
88     private:
89         typedef HashSet<UString::Rep*, PtrHash<UString::Rep*> > IdentifierSet;
90 
91         RefPtr<PropertyNameArrayData> m_data;
92         IdentifierSet m_set;
93         JSGlobalData* m_globalData;
94         bool m_shouldCache;
95     };
96 
97 } // namespace JSC
98 
99 #endif // PropertyNameArray_h
100