Re: [tap] ANNOUNCE: TAP::Spec::Parser - a TAP parser based on the draft grammar

Ovid <publiustemp-tapx@yahoo.com> Mon, 28 June 2010 11:49 UTC

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Date: Mon, 28 Jun 2010 04:49:35 -0700 (PDT)
From: Ovid <publiustemp-tapx@yahoo.com>
To: tap@ietf.org, Andrew Rodland <andrew@cleverdomain.org>
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Subject: Re: [tap] ANNOUNCE: TAP::Spec::Parser - a TAP parser based on the draft grammar
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--- On Mon, 28/6/10, Andrew Rodland <andrew@cleverdomain.org> wrote:

> From: Andrew Rodland <andrew@cleverdomain.org>

> Per Schwern's request at YAPC, I've written a parser based
> on the grammar in 
> the IETF draft standard 
> <http://testanything.org/wiki/index.php/TAP_at_IETF:_Draft_Standard>
> to help 
> make sure that it's correct and well-exercised. The code is
> at 
> http://github.com/arodland/TAP-Spec-Parser and it's
> currently in a working 
> alpha state. It uses a Regexp::Grammars grammar, with the
> relevant portions of 
> the spec grammar interleaved in comments.

I haven't looked at this too closely, but one thing you might want to consider it that TAP is stream-oriented, not document-oriented.  When I wrote the parser for new the Test::Harness, I was going to use a full lexer/grammar solution, only to realize that the nature of a stream means I wouldn't have the full document up front.  This is a deliberate design feature of TAP to allow results to be output as they occur, rather than waiting for the end of the test run (such as requiring a full XML document requires).

Does Regexp::Grammars allow you to handle that case? I didn't think so, but I could be mistaken.

Cheers,
Ovid
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