sequence method
Implementation
Parser<SequenceNode> sequence() =>
seq3(ref0(temporaries), ref0(periodToken).star(), ref0(statements)).map3((
temps,
periods,
stmts,
) {
final result = SequenceNode();
result.temporaries.addAll(temps);
result.periods.addAll(periods);
result.statements.addAll(stmts);
return result;
});