From: Micha <micha-1@fantasymail.de>
To: caml-list@yquem.inria.fr
Cc: Dario Teixeira <darioteixeira@yahoo.com>
Subject: Re: [Caml-list] The lexer hack
Date: Sat, 14 Nov 2009 17:20:13 +0100 [thread overview]
Message-ID: <200911141720.13847.micha-1@fantasymail.de> (raw)
In-Reply-To: <514622.64398.qm@web111510.mail.gq1.yahoo.com>
On Tuesday, 10. November 2009 15:42:52 Dario Teixeira wrote:
> Hi,
>
> I'm creating a parser for a LaTeX-ish language that features verbatim
> blocks. To handle them I want to switch lexers on-the-fly, depending on the
> parsing context. Therefore, I need the state from the (Menhir generated)
> parser to influence the lexing process (I believe this is called the "lexer
> hack" in compiler lore).
if the lexer cannot decide it on the tokens seen, a packrat parser (like
Aurochs) may be a better choice, since in a PEG there is no seperate lexer,
it's all one grammar, so you don't have this problem.
Michael
next prev parent reply other threads:[~2009-11-14 16:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-10 14:42 Dario Teixeira
2009-11-10 17:35 ` [Caml-list] " David Allsopp
2009-11-10 20:02 ` Dario Teixeira
2009-11-14 16:20 ` Micha [this message]
2009-11-14 18:08 ` Dario Teixeira
2009-11-14 19:09 ` Goswin von Brederlow
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