[REBOL] Re: Parse limitation ?
From: g:santilli:tiscalinet:it at: 8-Oct-2003 16:03
Hi Petr,
On Wednesday, October 8, 2003, 2:06:58 PM, you wrote:
PK> I would just like to point out, that 'first directive or tu/thru [a | b
PK> | c] was proposed for parse enahncement some time ago, but then some
PK> parse gurus (e.g. Gabriele) admitted, that parse would have to work
PK> other way internally and that it is not easy achievable (am I right,
PK> Gabriele?)
The point is, that internally PARSE would be forced to do the
equivalent of:
[any [a | b | c | skip]]
so even if it could be a bit faster than the above I don't think
it would be of great help. More readable, maybe... so it's
something I could add to compile-rules, if I get some time to work
on it.
In this particular case, I wouldn't use this construct at all,
since it's much better to have a more complete grammar (that can
make distinction between href= in a tag and outside of a tag
etc.), IMHO.
Regards,
Gabriele.
--
Gabriele Santilli <[g--santilli--tiscalinet--it]> -- REBOL Programmer
Amiga Group Italia sez. L'Aquila --- SOON: http://www.rebol.it/
