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/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "JSCell.h"
#include "JSFunction.h"
#include "JSString.h"
#include "JSObject.h"
#include "NumberObject.h"
#include <wtf/MathExtras.h>
namespace JSC {
ASSERT_HAS_TRIVIAL_DESTRUCTOR(JSCell);
void JSCell::destroy(JSCell* cell)
{
cell->JSCell::~JSCell();
}
bool JSCell::getString(ExecState* exec, UString&stringValue) const
{
if (!isString())
return false;
stringValue = static_cast<const JSString*>(this)->value(exec);
return true;
}
UString JSCell::getString(ExecState* exec) const
{
return isString() ? static_cast<const JSString*>(this)->value(exec) : UString();
}
JSObject* JSCell::getObject()
{
return isObject() ? asObject(this) : 0;
}
const JSObject* JSCell::getObject() const
{
return isObject() ? static_cast<const JSObject*>(this) : 0;
}
CallType JSCell::getCallData(JSCell*, CallData&)
{
return CallTypeNone;
}
ConstructType JSCell::getConstructData(JSCell*, ConstructData&)
{
return ConstructTypeNone;
}
bool JSCell::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName identifier, PropertySlot& slot)
{
// This is not a general purpose implementation of getOwnPropertySlot.
// It should only be called by JSValue::get.
// It calls getPropertySlot, not getOwnPropertySlot.
JSObject* object = cell->toObject(exec, exec->lexicalGlobalObject());
slot.setBase(object);
if (!object->getPropertySlot(exec, identifier, slot))
slot.setUndefined();
return true;
}
bool JSCell::getOwnPropertySlotByIndex(JSCell* cell, ExecState* exec, unsigned identifier, PropertySlot& slot)
{
// This is not a general purpose implementation of getOwnPropertySlot.
// It should only be called by JSValue::get.
// It calls getPropertySlot, not getOwnPropertySlot.
JSObject* object = cell->toObject(exec, exec->lexicalGlobalObject());
slot.setBase(object);
if (!object->getPropertySlot(exec, identifier, slot))
slot.setUndefined();
return true;
}
void JSCell::put(JSCell* cell, ExecState* exec, PropertyName identifier, JSValue value, PutPropertySlot& slot)
{
if (cell->isString()) {
JSValue(cell).putToPrimitive(exec, identifier, value, slot);
return;
}
JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
thisObject->methodTable()->put(thisObject, exec, identifier, value, slot);
}
void JSCell::putByIndex(JSCell* cell, ExecState* exec, unsigned identifier, JSValue value, bool shouldThrow)
{
if (cell->isString()) {
PutPropertySlot slot(shouldThrow);
JSValue(cell).putToPrimitive(exec, Identifier::from(exec, identifier), value, slot);
return;
}
JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
thisObject->methodTable()->putByIndex(thisObject, exec, identifier, value, shouldThrow);
}
bool JSCell::deleteProperty(JSCell* cell, ExecState* exec, PropertyName identifier)
{
JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
return thisObject->methodTable()->deleteProperty(thisObject, exec, identifier);
}
bool JSCell::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned identifier)
{
JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
return thisObject->methodTable()->deletePropertyByIndex(thisObject, exec, identifier);
}
JSObject* JSCell::toThisObject(JSCell* cell, ExecState* exec)
{
return cell->toObject(exec, exec->lexicalGlobalObject());
}
JSValue JSCell::toPrimitive(ExecState* exec, PreferredPrimitiveType preferredType) const
{
if (isString())
return static_cast<const JSString*>(this)->toPrimitive(exec, preferredType);
return static_cast<const JSObject*>(this)->toPrimitive(exec, preferredType);
}
bool JSCell::getPrimitiveNumber(ExecState* exec, double& number, JSValue& value) const
{
if (isString())
return static_cast<const JSString*>(this)->getPrimitiveNumber(exec, number, value);
return static_cast<const JSObject*>(this)->getPrimitiveNumber(exec, number, value);
}
double JSCell::toNumber(ExecState* exec) const
{
if (isString())
return static_cast<const JSString*>(this)->toNumber(exec);
return static_cast<const JSObject*>(this)->toNumber(exec);
}
JSObject* JSCell::toObject(ExecState* exec, JSGlobalObject* globalObject) const
{
if (isString())
return static_cast<const JSString*>(this)->toObject(exec, globalObject);
ASSERT(isObject());
return jsCast<JSObject*>(const_cast<JSCell*>(this));
}
void slowValidateCell(JSCell* cell)
{
ASSERT_GC_OBJECT_LOOKS_VALID(cell);
}
JSValue JSCell::defaultValue(const JSObject*, ExecState*, PreferredPrimitiveType)
{
ASSERT_NOT_REACHED();
return jsUndefined();
}
void JSCell::getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
{
ASSERT_NOT_REACHED();
}
UString JSCell::className(const JSObject*)
{
ASSERT_NOT_REACHED();
return UString();
}
const char* JSCell::className()
{
return classInfo()->className;
}
void JSCell::getPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
{
ASSERT_NOT_REACHED();
}
bool JSCell::hasInstance(JSObject*, ExecState*, JSValue, JSValue)
{
ASSERT_NOT_REACHED();
return false;
}
void JSCell::putDirectVirtual(JSObject*, ExecState*, PropertyName, JSValue, unsigned)
{
ASSERT_NOT_REACHED();
}
bool JSCell::defineOwnProperty(JSObject*, ExecState*, PropertyName, PropertyDescriptor&, bool)
{
ASSERT_NOT_REACHED();
return false;
}
bool JSCell::getOwnPropertyDescriptor(JSObject*, ExecState*, PropertyName, PropertyDescriptor&)
{
ASSERT_NOT_REACHED();
return false;
}
} // namespace JSC
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