PropertyDescriptor.h [plain text]
#ifndef PropertyDescriptor_h
#define PropertyDescriptor_h
#include "JSCJSValue.h"
namespace JSC {
class GetterSetter;
bool sameValue(ExecState*, JSValue, JSValue);
class PropertyDescriptor {
public:
PropertyDescriptor()
: m_attributes(defaultAttributes)
, m_seenAttributes(0)
{
}
PropertyDescriptor(JSValue value, unsigned attributes)
: m_value(value)
, m_attributes(attributes)
, m_seenAttributes(EnumerablePresent | ConfigurablePresent | WritablePresent)
{
ASSERT(m_value);
ASSERT(!m_value.isGetterSetter());
ASSERT(!m_value.isCustomGetterSetter());
}
JS_EXPORT_PRIVATE bool writable() const;
JS_EXPORT_PRIVATE bool enumerable() const;
JS_EXPORT_PRIVATE bool configurable() const;
JS_EXPORT_PRIVATE bool isDataDescriptor() const;
bool isGenericDescriptor() const;
JS_EXPORT_PRIVATE bool isAccessorDescriptor() const;
unsigned attributes() const { return m_attributes; }
JSValue value() const { return m_value; }
GetterSetter* slowGetterSetter(ExecState*); JS_EXPORT_PRIVATE JSValue getter() const;
JS_EXPORT_PRIVATE JSValue setter() const;
JSObject* getterObject() const;
JSObject* setterObject() const;
JS_EXPORT_PRIVATE void setUndefined();
JS_EXPORT_PRIVATE void setDescriptor(JSValue, unsigned attributes);
JS_EXPORT_PRIVATE void setCustomDescriptor(unsigned attributes);
JS_EXPORT_PRIVATE void setAccessorDescriptor(GetterSetter* accessor, unsigned attributes);
JS_EXPORT_PRIVATE void setWritable(bool);
JS_EXPORT_PRIVATE void setEnumerable(bool);
JS_EXPORT_PRIVATE void setConfigurable(bool);
void setValue(JSValue value) { m_value = value; }
JS_EXPORT_PRIVATE void setSetter(JSValue);
JS_EXPORT_PRIVATE void setGetter(JSValue);
bool isEmpty() const { return !(m_value || m_getter || m_setter || m_seenAttributes); }
bool writablePresent() const { return m_seenAttributes & WritablePresent; }
bool enumerablePresent() const { return m_seenAttributes & EnumerablePresent; }
bool configurablePresent() const { return m_seenAttributes & ConfigurablePresent; }
bool setterPresent() const { return !!m_setter; }
bool getterPresent() const { return !!m_getter; }
bool equalTo(ExecState*, const PropertyDescriptor& other) const;
bool attributesEqual(const PropertyDescriptor& other) const;
unsigned attributesOverridingCurrent(const PropertyDescriptor& current) const;
private:
JS_EXPORTDATA static unsigned defaultAttributes;
bool operator==(const PropertyDescriptor&) { return false; }
enum { WritablePresent = 1, EnumerablePresent = 2, ConfigurablePresent = 4};
JSValue m_value;
JSValue m_getter;
JSValue m_setter;
unsigned m_attributes;
unsigned m_seenAttributes;
};
}
#endif