#ifndef KJS_PROPERTY_SLOT_H
#define KJS_PROPERTY_SLOT_H
#include "identifier.h"
#include "value.h"
#include <assert.h>
namespace KJS {
class HashEntry;
class ExecState;
class JSObject;
#define VALUE_SLOT_MARKER ((GetValueFunc)1)
class PropertySlot
{
public:
typedef JSValue *(*GetValueFunc)(ExecState *, JSObject *originalObject, const Identifier&, const PropertySlot&);
JSValue *getValue(ExecState *exec, JSObject *originalObject, const Identifier& propertyName) const
{
if (m_getValue == VALUE_SLOT_MARKER)
return *m_data.valueSlot;
return m_getValue(exec, originalObject, propertyName, *this);
}
JSValue *getValue(ExecState *exec, JSObject *originalObject, unsigned propertyName) const
{
if (m_getValue == VALUE_SLOT_MARKER)
return *m_data.valueSlot;
return m_getValue(exec, originalObject, Identifier::from(propertyName), *this);
}
void setValueSlot(JSObject *slotBase, JSValue **valueSlot)
{
m_slotBase = slotBase;
m_data.valueSlot = valueSlot;
m_getValue = VALUE_SLOT_MARKER;
}
void setStaticEntry(JSObject *slotBase, const HashEntry *staticEntry, GetValueFunc getValue)
{
assert(getValue);
m_slotBase = slotBase;
m_data.staticEntry = staticEntry;
m_getValue = getValue;
}
void setCustom(JSObject *slotBase, GetValueFunc getValue)
{
assert(getValue);
m_slotBase = slotBase;
m_getValue = getValue;
}
void setCustomIndex(JSObject *slotBase, unsigned index, GetValueFunc getValue)
{
assert(getValue);
m_slotBase = slotBase;
m_data.index = index;
m_getValue = getValue;
}
void setGetterSlot(JSObject *slotBase, JSObject *getterFunc)
{
m_getValue = functionGetter;
m_slotBase = slotBase;
m_data.getterFunc = getterFunc;
}
void setUndefined(JSObject *slotBase)
{
m_slotBase = slotBase;
m_getValue = undefinedGetter;
}
JSObject *slotBase() const { return m_slotBase; }
const HashEntry *staticEntry() const { return m_data.staticEntry; }
unsigned index() const { return m_data.index; }
private:
static JSValue *undefinedGetter(ExecState *, JSObject *, const Identifier&, const PropertySlot&);
static JSValue *functionGetter(ExecState *, JSObject *, const Identifier&, const PropertySlot&);
GetValueFunc m_getValue;
JSObject *m_slotBase;
union {
JSObject *getterFunc;
JSValue **valueSlot;
const HashEntry *staticEntry;
unsigned index;
} m_data;
};
}
#endif // KJS_PROPERTY_SLOT_H