@top url { Protocol Host Port? Path Query }

Protocol {
    "http://" | "https://"
}

Path {
  (Slash PathSegment)*
}

Query {
  Question (QueryPair)*
}

QueryPair {
  Amp? QueryName Equal QueryValue
}

@tokens {
  Port { ":" $[0-9]+ }
  Host { $[a-zA-Z0-9-_.]+ }
  QueryName { $[a-zA-Z0-9-_.]+ }
  QueryValue { $[a-zA-Z0-9-_./]+ }
  PathSegment { $[a-zA-Z0-9-_.]+ }
  Slash { "/" }
  Question { "?" }
  Equal { "=" }
  Amp { "&" }
}