Function TestUserData

auxiliary.go:269–280

(l *State, index int, name string)

}

func TestUserData(l *State, index int, name string) interface{} {
	if d := l.ToUserData(index); d != nil {
		if l.MetaTable(index) {
			if MetaTableNamed(l, name); !l.RawEqual(-1, -2) {
				d = nil
			}
			l.Pop(2)
			return d
		}
	}
	return nil
}

// CheckUserData checks whether the function argument at index is a userdata
// of the type name (see NewMetaTable) and returns the userdata (see