toSequenceParser method
Converts a Record of 2 positional parsers to a Parser that runs the parsers in sequence and returns a Record with 2 positional parse results.
For example,
the parser (char('a'), char('b')).toSequenceParser()
returns ('a', 'b')
for the input 'ab'
.
Implementation
@useResult
Parser<(R1, R2)> toSequenceParser() => SequenceParser2<R1, R2>($1, $2);