Router.name.valid: def of bend-kit-router@0.2.0.0
Import: import bend-kit-router@0.2.0.0/router.bend as Router
Lines 60-65 of bend-kit-router@0.2.0.0/router.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-router@0.2.0.0/router.bend&start_line=60&end_line=65

import Base
import bend-kit-router@0.2.0.0/target.bend as Target

def name.valid(s: String) -> Bool:
  match s:
    case SNil{}:
      False{}
    case SCon{Chr{+c}, t}:
      Bool.and(Bool.or(Target.alpha(c), U32.is_eq(c, 95)), name.tail(t))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=bend-kit-router@0.2.0.0/router.bend&name=name.tail
  https://jend.leeeet.dev/definition.txt?path=bend-kit-router@0.2.0.0/target.bend&name=alpha