[antlr-interest] Re: RFC: slight change in ! semantics

Matthew Ford Matthew.Ford at forward.com.au
Tue Oct 9 02:24:23 PDT 2001


Double negatives are not good
Just insist on the individual elements being labelled.

matthew
----- Original Message -----
From: "Ric Klaren" <klaren at cs.utwente.nl>
To: "ANTLR mailinglist" <antlr-interest at yahoogroups.com>
Cc: "Terence Parr" <parrt at jguru.com>
Sent: Tuesday, October 09, 2001 6:16 PM
Subject: [antlr-interest] Re: RFC: slight change in ! semantics


> On Sat, Oct 06, 2001 at 02:21:28PM -0700, Terence Parr wrote:
> > Option 3 is good for now and optimization folks can simply rewrite to
> > not use the rule level ! and use individual ! on the grammar elements.
>
> Hmmm could make things slightly more usefull by making '!' a toggle
option.
> So turn of for the rule with '!' than on the individual elements turn it
on
> again with '!'....
>
> Ric
> --
> -----+++++*****************************************************+++++++++--
-----
>     ---- Ric Klaren ----- klaren at cs.utwente.nl ----- +31 53 4893722  ----
> -----+++++*****************************************************+++++++++--
-----
>  Why don't we just invite them to dinner and massacre them all when
they're
>   drunk? You heard the man. There's seven hundred thousand of them. Ah? ..
>            So it'd have to be something simple with pasta, then.
>                  From: Interesting Times by Terry Pratchet
>
>
>
>
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>


 

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