public static bool DefinePropertyOrThrow(this RuntimeObject obj, EcmaPropertyKey propertyKey, EcmaPropertyDescriptor descriptor)
{
Guard.ArgumentNotNull(obj, "obj");
if (!obj.DefineOwnProperty(propertyKey, descriptor))
{
throw new EcmaTypeErrorException(InternalString.Error.CreatePropertyThrow);
}
return(true);
}
public override bool DefineOwnProperty(EcmaPropertyKey propertyKey, EcmaPropertyDescriptor descriptor)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.DefineProperty);
if (trap == null)
{
return(target.DefineOwnProperty(propertyKey, descriptor));
}
if (!(bool)trap.Call(handler, target, propertyKey.ToValue(), descriptor.ToValue()))
{
return(false);
}
bool settingUnconfigurable = descriptor.Configurable == false;
EcmaPropertyDescriptor current = target.GetOwnProperty(propertyKey);
if (current == null)
{
if (!target.IsExtensible || settingUnconfigurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
else
{
if (!EcmaPropertyDescriptor.ValidateAndApplyPropertyDescriptor(ref descriptor, current, !target.IsExtensible))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (settingUnconfigurable && current.Configurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
return(true);
}
public static bool CreateMethodProperty(this RuntimeObject obj, EcmaPropertyKey propertyKey, EcmaValue value)
{
Guard.ArgumentNotNull(obj, "obj");
return(obj.DefineOwnProperty(propertyKey, new EcmaPropertyDescriptor(value, EcmaPropertyAttributes.DefaultMethodProperty)));
}
protected void SetPrototypeInternal(RuntimeObject proto)
{
proto.DefineOwnProperty(WellKnownProperty.Constructor, new EcmaPropertyDescriptor(this, EcmaPropertyAttributes.Configurable | EcmaPropertyAttributes.Writable));
DefineOwnProperty(WellKnownProperty.Prototype, new EcmaPropertyDescriptor(proto, EcmaPropertyAttributes.Writable));
}
