def int.digits
import bend-toon-codec@0.1.0.0/src/num.bend as Numimport Base
122def int.digits(+neg: Bool, +r: Sp) -> Maybe<&2, Num>:
123 match r:
124 case Sp{ds, rest}:
125 match ds:
126 case SNil{}:
127 None{}
128 case _:
129 int.rest(neg, ds, rest)