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neg, a neg narser
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John Mettraux
October 06, 2012
Technology
2
520
neg, a neg narser
presentation at Hiroshima.rb, 2012-10-06
John Mettraux
October 06, 2012
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Transcript
2012-10-06
neg
neg a neg narser
neg a leg larser a peg parser
ղੳදݱจ๏ʢ͔͍͖ͤͻΐ͏͛ΜͿΜΆ͏ɺӳ1BSTJOHFYQSFTTJPOHSBNNBS 1&(ʣɺੳతܗࣜจ๏ͷҰछͰ͋ΓɺܗࣜݴޠΛͦͷݴޠʹؚ·ΕΔจࣈྻ Λೝࣝ͢ΔͨΊͷҰ࿈ͷنଇΛͬͯදͨ͠ͷͰ͋Δɻ1&(࠶ؼԼ߱ߏจղ ੳΛจ๏Λࣔͨ͢Ί͚ͩʹ७ਮʹਤࣜతʹදݱͨ͠ͷͱݟΔ͜ͱͰ͖ɺ۩ମత ͳߏจղੳثͷ࣮ͦͷ༻్ͱಠཱ͍ͯ͠Δɻ 1&(ʹ͓͚Δߏจʢจ๏ʣͷఆٛจ຺ࣗ༝จ๏ͷόοΧεɾφΞه๏ʹΑΔͦ Εʹࣅ͍ͯΔ͕ɺจ຺ࣗ༝จ๏ͰҰൠʹʮʛʯʢॎɺόʔςΟΧϧόʔʣͰද͞ ΕΔʮ͜ΕΒͷ͏ͪͲΕ͔ʯͰͳ͘ɺʮ࠷ॳͷղੳ͕͏·͍ͬͨ͘ΒͦΕΛɺࣦഊͳΒ ࣍Λॱʹࢼͯ͠Ώ͖ɺޭͨ͠ͷΛ࠾༻ʯʢʮʯͰ͋ΒΘ͢ʣͱ͍͏ҙຯΛ͏ɻ
͜ͷͨΊɺจ຺ࣗ༝จ๏ͱҟͳΓɺ1&(ʹᐆດ͞ଘࡏ͠ͳ͍ɻจࣈྻΛߏจ ղੳ͢Δ߹ɺਖ਼͍͠ߏจৗʹ͔ͭ͠ͳ͍ɻ͜ͷͨΊ1&(ίϯϐϡʔλݴ ޠͷߏจղੳʹ͍͍ͯΔ͕ɺࣗવݴޠͷଟٛੑΛɺͦͷ··ෳͷߏจ͕Մ ೳͰ͋Δɺͱ͍͏ܗͰܗࣜԽ͢Δͷʹ͔ͳ͍ɻ IUUQKBXJLJQFEJBPSHXJLJղੳදݱจ๏
grammar
treetop - http://treetop.rubyforge.org citrus - http://mjijackson.com/citrus/ parslet - http://kschiess.github.com/parslet
citrus - http://mjijackson.com/citrus/
treetop - http://treetop.rubyforge.org
parslet - http://kschiess.github.com/parslet
parslet - http://kschiess.github.com/parslet
neg - http://git.io/neg
implementation
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output
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@jmettraux http://git.io/neg http://lambda.io/jmettraux