catchParameters method

Implementation

Parser<(String, String?)> catchParameters() => seq5(
  ref0(catchToken),
  ref1(token, '('),
  ref0(identifier),
  (ref1(token, ',') & ref0(identifier)).map((l) => l[1] as String).optional(),
  ref1(token, ')'),
).map5((_, _, e, s, _) => (e, s));