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GoͰܰྔϚʔΫΞοϓݴޠ ͷύʔαʔΛॻ͘ id:aereal
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ܰྔϚʔΫΞοϓݴޠͱ • ҎԼ LML = Lightweight Markup Language • HTMLXMLͱϓϨʔϯςΩετͷதؒ • Markdown, Textile, ͯͳه๏, etc.
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ܰྔϚʔΫΞοϓݴޠͱ • ҎԼ LML = Lightweight Markup Language • HTMLXMLͱϓϨʔϯςΩετͷதؒ • Markdown, Textile, ͯͳه๏, etc.
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GoͰͯͳه๏ͷ ύʔαʔΛॻ͘ id:aereal
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ࣗݾհ • id:aereal • Twitter: aereal • GitHub: aereal • גࣜձࣾͯͳ ΞϓϦέʔγϣϯΤϯδχΞ
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!͓͜ͱΘΓ! • ࠓճհ͢Δͯͳه๏ύʔαʔ ϓϥΠϕʔτϫʔΫͰ͢ • ͯͳͷαʔϏεʹ࠾༻͞ΕΔ͔ͳͲ ͯ͢ະఆͰ͢
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ࢀߟใ • ͜ͷࢿྉͰհ͢Δใͯ͢ 2017gokyoto ͱ ͍͏λάΛ͚ͭͯϒοΫϚʔΫ͍ͯ͠·͢ • http://b.hatena.ne.jp/aereal/2017gokyoto/
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ͯͳه๏ͱ • ͯͳ͕ఏڙ͢ΔαʔϏεͷҰ෦Ͱ͑ΔLML • ͯͳϒϩάɺͯͳμΠΞϦʔ • org-modeͱͪΐͬͱࣅ͍ͯΔ
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ͯͳه๏ͷྫ * ݟग़͠1 ** ݟग़͠2 - Ruby - Perl - Go + ى + ঝ + స + ݁
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ͳͥύʔαʔΛॻ͘? • طʹಈ͍͍ͯΔͷʹखΛՃ͑ΔͷͰμϝ? • ͳͥͯͳه๏? • ͳͥGoͰ?
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Ϟνϕʔγϣϯ • طଘͷ࣮ʹखΛՃ͑ΔͷΉ͔͍ͣ͠ • ͯͳه๏Λύʔε͍ͨ͠χʔζ͋Δ! • Go͕ॻ͖͔ͨͬͨ
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طଘͷ࣮ʹखΛՃ͑Δͷ Ή͔͍ͣ͠ • ܗࣜతͳఆ͕ٛͳ͍ = ಈ͘ίʔυ͕༷ • ਖ਼نදݱ
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ͯͳه๏Λύʔε͍ͨ͠ χʔζ͋Δ! • ͯͳάϧʔϓͰීஈ͔Βॻ͍͍ͯΔ • ͯͳϒϩάͰهΛॻ͘ͷ͕झຯ • →ͯͳه๏ʹৗతʹ৮Ε͍ͯΔ • Markdownͷม (...)
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Go͕ॻ͖͔ͨͬͨ • ීஈPerlJavaScriptɺͨ·ʹScala • ۀͱҟͳΔίϯςΩετͰίʔυΛॻ͖͔ͨͬͨ
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ͪΐ͏Ͳ͍͍ඪ • Ͱ͖Δ͜ͱɺΓ͍ͨ͜ͱɺؔ৺ͷ͋Δ͜ͱ͕ ͍͍͔Μ͡ʹόϥϯε͞Ε͍ͯΔ • WebͱςΩετϓϩηογϯά • খඪΛੵΈॏͶ͍͚ͯΔ • ʮࠓ͜ͷه๏ΛՃ͠Α͏ʯ
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108͋Δͯͳه๏ύʔαʔ • ͯͳμΠΞϦʔ • ͯͳάϧʔϓ • Text-Hatena (CPAN) • Text-Xatena • chris4403/WikiTextConverter • ...
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108͋Δͯͳه๏ύʔαʔ • ͦΕͧΕඍົʹ༷͕ҟͳΔ • ৽͘͠࡞ΒΕͨͷ΄ͲεʔύʔηοτͷఆٛΛ ࢼΈΔ͕͋Δ
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ܗࣜతͳఆٛΛ༩͍͑ͨ • ࣮ͱఆٛΛૄʹ͍ͨ͠ • ఆ͚ٛͩΛࢀর͍ͨ͠ • ͤΊͯCommonMark͘Β͍ͷͷ…… • (ͱ͍࣮͑ͱϦϯΫͤ͞ΒΕΔ΄͏͕Α͍)
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aereal/go-text-hatena https://github.com/aereal/go-text-hatena
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࣮ͨ͠ه๏ • ݟग़͠ • Ϧετ • Ҿ༻ • HTTPه๏ (Ұ෦)
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ࢦ͢ͱ͜Ζ • ϙʔλϒϧͰ͋Δ͜ͱ • ݴޠʹґΒͣར༻Ͱ͖Δ • ར༻ऀ͕ҙͷHTMLมϧʔϧΛద༻Ͱ͖Δ • ࣮ͱఆٛΛૄʹ • ఆٛΛ੩తʹࢀরͰ͖Δ • ࣮ݴޠ (Go) ͷ͕ࣝͳͯ͘งғؾ௫ΊΔ
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࣮ • GoͰೖग़ྗΛΠϯλʔϑΣʔεͱ͢ΔόΠφϦ • → ݴޠʹґΒͣར༻Ͱ͖Δ • ASTΛJSONͰग़ྗ͢Δ͚ͩ • → ར༻ऀ͕ҙͷHTMLมϧʔϧΛద༻ (࣮) Ͱ͖Δ
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࣮ • goyaccΛ͍YACCͰจ๏ఆٛ • → ఆٛΛ੩తʹࢀরͰ͖Δ (parser.go.y) • ࣮ݴޠ (Go) ͷ͕ࣝͳͯ͘งғؾ௫ΊΔ
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HTMLͷม • αʔϏεʹΑͬͯͲΕ͘Β͍HTMLͷೖྗΛ ڐ༰͢Δ͔ͷํ͕ҟͳΔ • ͯͳϒϩάࣗ༝͕ͩɺͯͳμΠΞϦʔ ϗϫΠτϦετܗࣜ • ηΩϡϦςΟ্ͷࣄ
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มσϞ • aereal/sketch-hatena-notation-api
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GoͰύʔαʔΛॻ͘
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ͬͨπʔϧ • Go • goyacc • text/scanner
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goyacc • yaccͷGo൛ • ࠷ۙ go tool ͔Β֎Εͨ • go get golang.org/x/tools/cmd/goyacc
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yacc • ύʔαʔδΣωϨʔλʔ • BNF • ఆٛʹରͯ͠ίʔϧόοΫΛॻ͍͍ͯ͘ • ؐݩͱΞΫγϣϯͱݺΕΔ • शyacc͕͓͢͢Ί • ࣮ྫͱͯ͠ mattn/streeem ࢀߟʹͳΔ
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yaccͷ͍͍ͱ͜Ζ • BNFʹΑΔఆٛͱɺؐݩ͢Δίʔυ͕Ͱ͖Δ • ݴޠDSLΛ͏ύʔαʔίϯϏωʔλʔΑΓ ଞͷਓʹݺΜͰΒ͍͍͢ؾ͕͢Δ
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yaccͷඍົͳͱ͜Ζ • *.go.y ͰΤσΟλͷࢧԉ͕ड͚ΒΕͳ͍ • ͏·͍͜ͱઃఆͨ͠ΒͰ͖ͦ͏Ͱ͋Δ • ࣈ۟ղੳࣗͰؤுΔඞཁ͕͋Δ • GoͰ text/scanner ͱ͍͏ඪ४ϥΠϒϥϦ͕ ͋ΔͷͰָͰ͖Δ
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ίʔυΛಡΜͰΈΔ • lex.go • parser.go.y • parser_test.go
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·ͱΊ
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·ͱΊ • ͯͳه๏ύʔαʔΛGoͰॻ͍ͨ • Goʹgoyacctext/scannerͳͲ ߏจղੳࣈ۟ղੳͷͨΊͷπʔϧ͕ἧ͍ͬͯΔ
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ࢀߟใ • ͜ͷࢿྉͰհ͢Δใͯ͢ 2017gokyoto ͱ ͍͏λάΛ͚ͭͯϒοΫϚʔΫ͍ͯ͠·͢ • http://b.hatena.ne.jp/aereal/2017gokyoto/