--- Brent Dax <[EMAIL PROTECTED]> wrote: > Tim Bunce: > # On Thu, Jan 31, 2002 at 05:15:49PM +0000, Graham Barr wrote: > # > # Especially as the perl6 rx engine will have to be able to > # work directly on > # non-trivial things like streams and generators ans suchlike. > > I have a suggestion similar to the ops suggestion but more flexible: > Regex vtables. > > We'd probably need three: > > -normal text match > -case-folded text match > -generic sequence match (the stuff Larry's been talking about)
Hmm... based on what I've read in Larry's message and the unicode spec, some of this could be spirited away into a customizable and/or chained unicode string iterator. For instance, it (the iterator) could return case-folded (or not) characters, it could convert "" pairs into Ps/Pe quote pairs (for code parsers) and remove comments (yay), and it could return locale-based graphemes (I'm scared). Since graphemes at least will be multi-character in some locales, I see how my objection to rx_literal was a Bad Thing. And I expect to be able to write a grapheme-sending unicode string iterator and plug it into a regex and have it DWIM in my Distant $future, right? Perhaps the backtracking mechanism should be *in* the iterator? Maybe the iterator will be the home of some locale evil? Could we make it handle locale character-ranges [a-o'] too? Okay, that last one's a bit much. Still, Larry did mention that business with generalized backtracking and bookkeeping... I can't wait for Apocalypse 5. Is there a custom iterator syntax/convention in parrot? I hope I don't give Larry any *new* scary ideas for the next apocalypse. This is just for entertainment purposes, after all </disclaimer>. Ashley the Zealot __________________________________________________ Do You Yahoo!? Great stuff seeking new owners in Yahoo! Auctions! http://auctions.yahoo.com
