def scheme.ok
import bend-net-url@0.4.0.0/url.bend as Urlimport Base
502def scheme.ok(s: String) -> Bool:
503 match s:
504 case SNil{}:
505 True{}
506 case SCon{Chr{+c}, t}:
507 Bool.and(Bool.or(Bool.or(Bool.and(U32.is_le(97, c), U32.is_le(c, 122)), Bool.and(U32.is_le(65, c), U32.is_le(c, 90))), Bool.or(Bool.and(U32.is_le(48, c), U32.is_le(c, 57)), Bool.or(U32.is_eq(c, 43), Bool.or(U32.is_eq(c, 45), U32.is_eq(c, 46))))), scheme.ok(t))