JSONの歴史 - Speaker Deck

JSONの歴史

by Matsui Masashi

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JSONͷྺ࢙ @circled9 2018-07-13 #friday13json

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JSONҎલ 1995-1999

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1995೥ࠒͷͰ͖͝ͱ • Windows 95͕ൃച͞ΕΔ • ϥϦʔϖΠδͱαʔήΠϒϦϯ͕ݕࡧΤϯδ ϯΛ࡞Γ࢝ΊΔʢޙͷGoogleʣ • Amazon͕αʔϏε։࢝

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JavaScriptͷ͸͡·Γ • 1995೥ʹNetscape Navigator 2.0Ͱ࣮૷͞ Εͨͷ͕࠷ॳ • 1996೥ʹInternet Explorer 3.0ʹ౥ࡌ͞Εͨ

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JavaScriptͷඪ४Խ • 1997೥ʹEcma InternationalʹΑͬͯ࢓༷͕ ඪ४Խ͞Εͨ • ͜ͷඪ४ΛECMAScriptͱݺͿ • 1999೥ʹECMA-262ͷୈ3൛͕ެ։͞Εͨ • ͜ͷ࣌఺Ͱ͸·ͩJSON͸ͳ͍

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Ecma International • ৘ใ௨৴γεςϜ෼໺ʹ͓͚Δࠃࡍతͳඪ४Խ ஂମ • ݩʑ͸European Computer Manufactures Associationͱ͍͏໊લͩͬͨ • 1994೥ʹࠃࡍతͳཱ৔Λ൓өͯ͜͠ͷ໊લʹ ͳͬͨ

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TC39 • Technical Committee = ઐ໳ҕһձ • TC39͸ECMAScriptΛࡦఆ͍ͯ͠Δઐ໳ҕһ ձ

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ECMAScript • Ecma Internationalͷ࡞ͬͨJavaScriptͷඪ४ • ECMA-262ͱ͍͏ن֨൪߸Ͱඪ४Խ͞Ε͍ͯ Δ

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JSONͷ͸͡·Γ 2001-2002

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2001೥ࠒͷͰ͖͝ͱ • Internet Explorer 6͕ϦϦʔε͞ΕΔ • Netscape 6͕ϦϦʔε͞ΕΔ • ͜ͷ࣌఺Ͱ͸Firefox΋Chrome͸·ͩͳ͍

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JSONͷ͸͡·Γ • 2001೥ʹDouglas Crockfordࢯ͕ݟ໋͚ͭͯ ໊ͨ͠ͷ͕͸͡·ΓͱݴΘΕ͍ͯΔɻ • 2002೥ʹjson.orgͰ࢓༷͕ެ։͞Εͨɻ

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 2005 2010 2015

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RFC 4627ͷൃද 2006

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2006೥ࠒͷͰ͖͝ͱ • Ajaxͱ͍͏ݴ༿͕ੜΈग़͞ΕΔ • Web 2.0ͱ͍͏ݴ༿͕ྲྀߦΔ • ͍ΘΏΔୈೋ࣍ϒϥ΢βઓ૪͕࢝·Δ

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IETF • ਖ਼໊ࣜশ͸ The Internet Engineering Task Force • ΠϯλʔωοτͰར༻͞ΕΔٕज़ͷඪ४Λࡦ ఆ͢Δ૊৫ • ࡦఆ͞Εͨඪ४࢓༷͸࠷ऴతʹ͸RFCͳͲͱ ͯ͠ൃߦ͞ΕΔ

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RFC • Request for Commentsͷུ • IETFʹΑΔٕज़࢓༷ͷอଘɺެ։ܗࣜ • Not All RFCs are Standards (RFC 1796)

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RFC 4627 • 2006೥7݄ʹެ։͞Εͨ࢓༷ • Informational • τοϓϨϕϧͰ͸ObjectͱArray͔͠ڐͯ͠ ͍ͳ͍

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ 2005 2010 2015

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ECMAScript 5 2009

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2009೥ࠒͷͰ͖͝ͱ • Windows 7͕ൃച͞ΕΔ • ೔ຊॳͷAndroidεϚϗɺHT-03A͕ൃച͞Ε Δ • Twitter͕೔ຊͰྲྀߦ͢Δ

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ECMAScript 5 • 2011೥6݄ʹެ։͞Εͨ࢓༷ • JSONʹؔ͢Δهड़͕௥Ճ͞Εͨ • 4ͷ࢓༷ࡦఆʹࣦഊͨͨ͠Ίɺ10೥ͿΓͷ৽ ࢓༷ʹͳΔ

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ 2005 &$."4DSJQU͕ ެ։͞ΕΔ 2010 2015

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ECMA-404 2013

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2013೥ࠒͷͰ͖͝ͱ • IE11͕ϦϦʔε͞ΕΔ • εϚϗ͕Ψϥέʔͷར༻཰Λ௒͑Δ

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ECMA-404 • 2013೥10݄ʹެ։͞Εͨ࢓༷ • ECMA-262ͷJSON෦෼Λ୯ಠͷ࢓༷ͱͯ͠ ·ͱΊΒΕͨ΋ͷ • ͜ͷޙʹग़ͨECMA-262, 6thͰ͸JSONʹؔ ͢Δهड़͸ͳ͘ͳ͍ͬͯΔ

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ 2005 &$."4DSJQU͕ ެ։͞ΕΔ 2010 2015 &$."͕ ެ։͞ΕΔ

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RFC 7159 2014

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2014೥ࠒͷͰ͖͝ͱ • HTML5͕קࠂ͞ΕΔ • ChromeͷγΣΞ͕τοϓʹ • ਓྨ͕IE6͔Βղ์͞Εͨ

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RFC 7158 • ҰॠͰഇࢭ • ഇࢭͷཧ༝͸ɺ2014೥3݄ͱॻ͘͸ͣͩͬͨ ͷʹɺ2013೥3݄ͱॻ͍ͯ͠·͔ͬͨΒ

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RFC 7159 • 2014೥3݄ʹެ։͞Εͨ࢓༷ • Proposed Standard • τοϓϨϕϧͰObjectͱArrayҎ֎ͷvalue΋ ѻ͑ΔΑ͏ʹͳͬͨ

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ 2005 &$."4DSJQU͕ ެ։͞ΕΔ 2010 2015 &$."͕ ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ

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RFC8259ͱECMA-404 2nd 2017

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RFC 8259 • 2017೥12݄ʹެ։͞Εͨ࢓༷ • Internet Standard • UTF-8Λ࢖͏΂͠ͱॻ͔Εͨ

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ECMA-404 2nd • 2017೥12݄ʹެ։͞Εͨ࢓༷ • ஫ҙॻ͖͕૿͚͑ͨͩʁͱ͍͏ײ͕͢͡Δ

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RFC 8259ͱECMA-404 2nd • ޓ͍ʹ࢓༷Λ߹ΘͤΔͥͬͯॻ͍ͯ͋Δ • ಛʹͲͪΒΛ࢖͏ͱ͔͸ߟ͑ͳ͍͍ͯ͘

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Timeline +40/͕ൃݟ͞ΕΔ 2000 KTPOPSHͰ ࢓༷͕ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ 2005 &$."4DSJQU͕ ެ։͞ΕΔ 2010 2015 &$."͕ ެ։͞ΕΔ 3'$ɺ &$."OE͕ ެ։͞ΕΔ 3'$͕ ެ։͞ΕΔ

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Appendix

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Appendix • json.org • https://json.org/

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Appendix • ECMAScript • https://ja.wikipedia.org/wiki/ECMAScript • Standard ECMA-262 • https://www.ecma-international.org/publications/standards/ Ecma-262.htm • Standard ECMA-404 • https://www.ecma-international.org/publications/standards/ Ecma-404.htm

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Appendix • Internet Engineering Task Force • https://ja.wikipedia.org/wiki/ Internet_Engineering_Task_Force • Request for Comments • https://ja.wikipedia.org/wiki/Request_for_Comments • RFC 4627 • https://tools.ietf.org/html/rfc4627

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Appendix • RFC 7158 • https://tools.ietf.org/html/rfc7158 • RFC 7159 • https://tools.ietf.org/html/rfc7159 • RFC 8259 • https://tools.ietf.org/html/rfc8259

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Appendix • JSONɺECMAඪ४ͱͳΔɻ࢓༷จॻʮECMA-404ʯ͕ެ։ ʵ Publickey • https://www.publickey1.jp/blog/13/ jsonecmaecma-404.html • ࣄ্࣮࠷ޙͷJSON࢓༷ʮRFC 8259ʯͱʮECMA-404 2nd Editonʯެ։ɻUTF-8Τϯίʔυඞਢʹ ʵ Publickey • https://www.publickey1.jp/blog/17/ jsonrfc_8259ecma-404_2nd_editonutf-8.html