Re: Parser Cruft in gram.y - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Parser Cruft in gram.y
Date
Msg-id 20121220231641.GB15871@awork2.anarazel.de
Whole thread Raw
In response to Re: Parser Cruft in gram.y  ("McDevitt, Charles" <Charles.McDevitt@emc.com>)
Responses Re: Parser Cruft in gram.y  ("McDevitt, Charles" <Charles.McDevitt@emc.com>)
Re: Parser Cruft in gram.y  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On 2012-12-20 23:12:55 +0000, McDevitt, Charles wrote:
> > 
> > Another way of attack along these lines might be to use the %glr-parser
> > and then try to cut back on all those redundant rules that were put in
> > to avoid conflicts.  The number of key words categories and such could
> > perhaps also be reduced that way.
> > 
> > Of course, this is mostly speculation.
> > 
> > 
> 
> The GLR output from Bison is licensed under the GPL (unlike the LALR output).
> So using Bison's GLR mode isn't an option.

Thats not the case anymore:
http://www.gnu.org/software/bison/manual/html_node/Conditions.html

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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