catchClause method

Implementation

Parser<CatchClauseNode> catchClause() => seq2(
  [
    // on Type catch (e, s)
    seq4(
      ref0(onToken),
      ref0(type),
      ref0(catchParameters).optional(),
      ref0(block),
    ).map4(
      (_, type, params, b) => CatchClauseNode(
        exceptionType: type,
        exceptionParameter: params?.$1,
        stackTraceParameter: params?.$2,
        body: b,
      ),
    ),
    // catch (e, s)
    seq2(ref0(catchParameters), ref0(block)).map2(
      (params, b) => CatchClauseNode(
        exceptionParameter: params.$1,
        stackTraceParameter: params.$2,
        body: b,
      ),
    ),
  ].toChoiceParser(),
  epsilon(),
).map2((c, _) => c);