Function CheckUserData

auxiliary.go:285–291

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

(l *State, index int, name string)

// of the type name (see NewMetaTable) and returns the userdata (see
// ToUserData).
func CheckUserData(l *State, index int, name string) interface{} {
	if d := TestUserData(l, index, name); d != nil {
		return d
	}
	typeError(l, index, name)
	panic("unreachable")
}

// CheckType checks whether the function argument at index has type t. See Type for the encoding of types for t.
func CheckType(l *State, index int, t Type) {