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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2003, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef JSArray_h
#define JSArray_h
#include "JSObject.h"
namespace JSC {
typedef HashMap<unsigned, JSValuePtr> SparseArrayValueMap;
struct ArrayStorage {
unsigned m_length;
unsigned m_vectorLength;
unsigned m_numValuesInVector;
SparseArrayValueMap* m_sparseValueMap;
void* lazyCreationData; // A JSArray subclass can use this to fill the vector lazily.
JSValuePtr m_vector[1];
};
class JSArray : public JSObject {
friend class JIT;
public:
explicit JSArray(PassRefPtr<Structure>);
JSArray(PassRefPtr<Structure>, unsigned initialLength);
JSArray(ExecState*, PassRefPtr<Structure>, const ArgList& initialValues);
virtual ~JSArray();
virtual bool getOwnPropertySlot(ExecState*, const Identifier& propertyName, PropertySlot&);
virtual bool getOwnPropertySlot(ExecState*, unsigned propertyName, PropertySlot&);
virtual void put(ExecState*, unsigned propertyName, JSValuePtr); // FIXME: Make protected and add setItem.
static const ClassInfo info;
unsigned length() const { return m_storage->m_length; }
void setLength(unsigned); // OK to use on new arrays, but not if it might be a RegExpMatchArray.
void sort(ExecState*);
void sort(ExecState*, JSValuePtr compareFunction, CallType, const CallData&);
void push(ExecState*, JSValuePtr);
JSValuePtr pop();
bool canGetIndex(unsigned i) { return i < m_fastAccessCutoff; }
JSValuePtr getIndex(unsigned i)
{
ASSERT(canGetIndex(i));
return m_storage->m_vector[i];
}
bool canSetIndex(unsigned i) { return i < m_fastAccessCutoff; }
JSValuePtr setIndex(unsigned i, JSValuePtr v)
{
ASSERT(canSetIndex(i));
return m_storage->m_vector[i] = v;
}
void fillArgList(ExecState*, ArgList&);
static PassRefPtr<Structure> createStructure(JSValuePtr prototype)
{
return Structure::create(prototype, TypeInfo(ObjectType));
}
protected:
virtual void put(ExecState*, const Identifier& propertyName, JSValuePtr, PutPropertySlot&);
virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
virtual bool deleteProperty(ExecState*, unsigned propertyName);
virtual void getPropertyNames(ExecState*, PropertyNameArray&);
virtual void mark();
void* lazyCreationData();
void setLazyCreationData(void*);
private:
virtual const ClassInfo* classInfo() const { return &info; }
bool getOwnPropertySlotSlowCase(ExecState*, unsigned propertyName, PropertySlot&);
void putSlowCase(ExecState*, unsigned propertyName, JSValuePtr);
bool increaseVectorLength(unsigned newLength);
unsigned compactForSorting();
enum ConsistencyCheckType { NormalConsistencyCheck, DestructorConsistencyCheck, SortConsistencyCheck };
void checkConsistency(ConsistencyCheckType = NormalConsistencyCheck);
unsigned m_fastAccessCutoff;
ArrayStorage* m_storage;
};
JSArray* asArray(JSValuePtr);
JSArray* constructEmptyArray(ExecState*);
JSArray* constructEmptyArray(ExecState*, unsigned initialLength);
JSArray* constructArray(ExecState*, JSValuePtr singleItemValue);
JSArray* constructArray(ExecState*, const ArgList& values);
inline JSArray* asArray(JSValuePtr value)
{
ASSERT(asObject(value)->inherits(&JSArray::info));
return static_cast<JSArray*>(asObject(value));
}
} // namespace JSC
#endif // JSArray_h
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