Re: NYACC: getting source location info?

[Matt Wette]

On 7/10/20 1:37 PM, tomas@tuxteam.de wrote:
> Hi,
>
> I'm having some fun with NYACC (thanks, Matt!).
>
> To help debugging things and for errors and warnings, it'd be nice
> to "know" where the current LHS non-terminal starts in the source.
>
> Its endpoint is (is it?) (port-line (current-input-port) [and, of
> course, (port-column ...)] -- at least some playing around suggest
> that (and it makes sense, somehow).
>
> Is there anything I've overlooked? Or do I have to hack the (or
> roll-my-own) lexer for that?
>
> Thanks for any insight
>
> cheers
> -- t

I assume you mean providing source location information to the
values (i.e, $1, etc).  I've thought about that a few times but have
not arrived at anything intelligent.  Maybe using object properties
(see sec 6.11 in Guile Ref) in the lexical analyzer, as you mention.

Take care,
Matt