def literal.valid
import bend-kit-router@0.2.0.0/router.bend as Routerimport Base
46def literal.valid(s: String) -> Bool:
47 match s:
48 case SNil{}:
49 True{}
50 case SCon{Chr{+c}, t}:
51 Bool.and(Bool.and(scalar(c), Bool.and(U32.is_ne(c, 0), U32.is_ne(c, 47))), literal.valid(t))