runtime/PropertyNameArray.h

   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
  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(JSGlobalData* globalData)
  56             : m_data(PropertyNameArrayData::create())
  57             , m_globalData(globalData)
  58             , m_shouldCache(true)
  59         {
  60         }
  61
  62         PropertyNameArray(ExecState* exec)
  63             : m_data(PropertyNameArrayData::create())
  64             , m_globalData(&exec->globalData())
  65             , m_shouldCache(true)
  66         {
  67         }
  68
  69         JSGlobalData* globalData() { return m_globalData; }
  70
  71         void add(const Identifier& identifier) { add(identifier.impl()); }
  72         JS_EXPORT_PRIVATE void add(StringImpl*);
  73         void addKnownUnique(StringImpl* 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
  78         void setData(PassRefPtr<PropertyNameArrayData> data) { m_data = data; }
  79         PropertyNameArrayData* data() { return m_data.get(); }
  80         PassRefPtr<PropertyNameArrayData> releaseData() { return m_data.release(); }
  81
  82         // FIXME: Remove these functions.
  83         typedef PropertyNameArrayData::PropertyNameVector::const_iterator const_iterator;
  84         size_t size() const { return m_data->propertyNameVector().size(); }
  85         const_iterator begin() const { return m_data->propertyNameVector().begin(); }
  86         const_iterator end() const { return m_data->propertyNameVector().end(); }
  87
  88     private:
  89         typedef HashSet<StringImpl*, PtrHash<StringImpl*> > 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