Perl 6 - the future is here, just unevenly distributed

IRC log for #marpa, 2015-01-12

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All times shown according to UTC.

Time Nick Message
01:04 jeffreykegler hobbs: your Marpa talk is taped the 15th, I think?  And there's a "studio audience" we can be part of over the Internet?
01:05 jeffreykegler In my case, I'd try to attend, but I would stay silent ---
01:06 jeffreykegler input from me during the talk would be distracting, I think.
01:08 * jeffreykegler switches topics slightly
01:09 jeffreykegler re my connectivity troubles in the past -- these grew worse until finally in early December I lost my voice-line entirely, ...
01:09 jeffreykegler but this week it was restored.  The problem seems to have been corrosion on the pole outside where I live.
01:10 jeffreykegler I live on top of a hill near the Pacific Ocean, and the salt air is hard on infrastructure.
01:17 ronsavage When I hear politicians talking about infrastructure, I run for my life, but in your case I don't need to do that :-)
02:46 jeffreykegler https://github.com/jeffreykegler/Marpa--R2/blob/master/cpan/notes/de.md
02:46 jeffreykegler I've written a design document for "discard events".
02:47 jeffreykegler I will also announce it on the Google group, because I think a wider audience should be informed, and be able to comment.
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05:46 ronsavage I'm looking at re-writing X500::DN, which uses a grammar for Parse::RecDescent. Anyone else working on this?
05:46 ronsavage Ahh. That's X500 :: DN!
05:49 ronsavage Also, I'm interested in suggestions for the name of such as module. Possible components. X500, DN, LDAP, DistinguishedName.
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06:01 rns jeffreykegler: re http://irclog.perlgeek.de/marpa/2015-01-11#i_9918855 -- thanks, will give it a try.
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09:40 rns jeffreykegler, pczarn: re macros -- i was reading http://www.lshift.net/blog/2011/04/30/using-the-syntax-tree-in-go/ on programmatic transformation of a go program by walking its ast and it mentioned Russ Cox's thesis on extension-oriented compiler -- http://pdos.csail.mit.edu/xoc/
09:44 rns The thesis contains a good writeup on the history of lisp macros development and an interesting approach to extensibility.
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21:34 pczarn rns: That's a good writeup. The syntax extensions and compiler plugins I'm working with in Rust are used just like syntactic macros, but they give the macro creator all possibilities available before next compiler passes
21:38 pczarn the only alternative to syntax extensions is the "macro rules" extension that registers macros which parse/match input against simple patterns and expand to code with the use of simple templates
21:38 pczarn In fact, "macro rules" declarations could be expanded to strictly more powerful syntax extensions
21:40 pczarn The "racing interface" to marpa itself is a syntax extension.
21:42 pczarn Perhaps there should be some way of redeclaring grammar rules in Russ Cox's approach
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