Perl 6 - the future is here, just unevenly distributed

IRC log for #marpa, 2016-12-13

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Time Nick Message
02:48 ilbot3 joined #marpa
02:48 Topic for #marpa is now Start here: http://savage.net.au/Marpa.html - Pastebin: http://scsys.co.uk:8002/marpa - Jeffrey's Marpa site: http://jeffreykegler.github.io/Marpa-web-site/ - IRC log: http://irclog.perlgeek.de/marpa/today
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22:36 patrickhuber I have a question about the Marpa theory paper here: http://dinhe.net/~aredridel/.notmine/PDFs/Parsing/KEGLER,%20Jeffrey%20-%20Marpa,%20a%20practical%20general%20parser:%20the%20recognizer.pdf
22:38 patrickhuber Under the Memoize transitions pseudocode on page 19 the algorithm states "for every postdot SYM a postdot symbol of iES do" "(postdot SYM is \Leo eligible if it is Leo unique and its rule is right recursive)"
22:40 patrickhuber I've intprepreted this as "look at the post dot symbol in the rule where it was found", is it really "look up the rule where the post dot symbol is the Left Hand Side"?
22:40 patrickhuber "where it was found" means in the rule which it was found
22:40 patrickhuber The grammar I'm using is :
22:40 patrickhuber A -> '[' VR ']'
22:40 patrickhuber VR-> V
22:41 patrickhuber | V ',' VR
22:41 patrickhuber | null
22:41 patrickhuber V -> [\d]
22:41 patrickhuber When I do a leo reduction without the A&H DFA, the answer is "look up the rule where the post dot symbol is the Left Hand Side"
22:42 patrickhuber just curious if I'm reading the paper right
22:51 patrickhuber Hmm, I think I may have found my bug. I was looking to see if the symbol was right recursive, not the rule where the symbol was found
22:53 patrickhuber ex: A-> '[' * VR ']'
22:53 patrickhuber vs: VR-> V ',' * VR
22:56 patrickhuber if I create a leo item for the post dot symbol VR and just check if VR is recursive, it will be
22:56 patrickhuber if I create a leo item for the post dot sybol VR only if the rule is right recursive, it won't be in the A-> '[' * VR ']' case

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