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Re: Sample functions for String Parsers in Lisp


From: Pascal J. Bourguignon
Subject: Re: Sample functions for String Parsers in Lisp
Date: Tue, 13 Oct 2009 14:47:40 +0200
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (darwin)

Nordlöw <address@hidden> writes:

> Has anybody any good sample code in elisp that shows how to
> conveniently do parsing of code contained in a string?
>
> Reason: I am writing a parser that converts Emacs regexps (back) into
> rx expressions. I need this for my file magic pattern matcher in order
> to read as little data as possible from the file (locality) and do
> several matchings in parallel.
>
> I think the main loop should be string-iteration-driven using while()
> and aref() and length() I presume.
>
> Any suggestions?,

1- Read the Dragon Book.
   
http://www.amazon.com/Compilers-Principles-Techniques-Alfred-Aho/dp/0201100886

2- Use a parser generator.  
   http://cedet.sourceforge.net/info/semantic.html


-- 
__Pascal Bourguignon__


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