From: Hartmut Kaiser (hartmutkaiser_at_[hidden])
Date: 2004-12-25 14:55:12
christopher diggins wrote:
> I think this does a good job of illustrating the difference
> between Spirit
> and YARD. Spirit would require the following code, for the grammar
> production written above using YARD:
>
> rule<> rule_overall =
> switch_p
> [
> case_p<'a'>(parser_a),
> case_p<'b'>(parser_b),
> case_p<'c'>(parser_b),
> case_p<'d'>(parser_b),
> default_p(parser_default)
> ]
> ;
>
> With Spirit there is an arbitrary upper bound on the number of case
> statements, which defaults to 3(!?). I would think that it is
> safe to say
> that the YARD parser is easier to use, and has fewer
> arbitrary constraints
> *BUT* does not provide dynamic rule expressions, and is more verbose.
What's the problem with the default value?
Regards Hartmut