From DGD Mailing List  Mon Dec  2 08:47:01 2002
From: DGD Mailing List (Jay Shaffstall)
Date: Mon Dec  2 08:47:01 2002
Subject: [DGD] Debugging a parse_string() grammar.

Keith,

>I was wondering what a good way was to debug a grammar
>for use with parse_string().  I'm trying to write a
>grammar, but it never seems to parse the way I want it
>to, and was wondering if there was a way of figuring
>out why it parses the way it does.

One technique I've found helpful is to use an LPC function in the grammar 
to print out the tokens that match that rule.  That often gives me a clue 
as to why it isn't parsing the way I think it should be parsing.

Jay