Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Writing simple and easy DSL with Ruby
Search
Masafumi Okura
January 29, 2022
Programming
2
200
Writing simple and easy DSL with Ruby
https://toyama-eng.connpass.com/event/233459/
Masafumi Okura
January 29, 2022
Tweet
Share
More Decks by Masafumi Okura
See All by Masafumi Okura
Why doesn't Ruby have Boolean class - final version
okuramasafumi
0
230
Reading Rails 1.0 Source Code
okuramasafumi
0
250
RDoc meets YARD
okuramasafumi
4
170
Why doesn't Ruby have Boolean class?
okuramasafumi
0
20
My KaigiEffect at RubyKaigi 2025, part 1
okuramasafumi
1
52
Writing documentation can be fun with plugin system
okuramasafumi
0
210
Alba: Why, How and What's So Interesting
okuramasafumi
0
400
Why did my proposals get rejected?
okuramasafumi
1
730
A suggestion for the future of RDoc
okuramasafumi
1
410
Other Decks in Programming
See All in Programming
より安全で効率的な Go コードへ: Protocol Buffers Opaque API の導入
shwatanap
2
780
rage against annotate_predecessor
junk0612
0
170
OSS開発者という働き方
andpad
5
1.7k
The Past, Present, and Future of Enterprise Java with ASF in the Middle
ivargrimstad
0
180
複雑なフォームに立ち向かう Next.js の技術選定
macchiitaka
2
240
CloudflareのChat Agent Starter Kitで簡単!AIチャットボット構築
syumai
2
510
Design Foundational Data Engineering Observability
sucitw
3
210
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
Ruby Parser progress report 2025
yui_knk
1
460
HTMLの品質ってなんだっけ? “HTMLクライテリア”の設計と実践
unachang113
4
2.9k
今だからこそ入門する Server-Sent Events (SSE)
nearme_tech
PRO
3
260
概念モデル→論理モデルで気をつけていること
sunnyone
3
300
Featured
See All Featured
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
930
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
850
Gamification - CAS2011
davidbonilla
81
5.4k
The Power of CSS Pseudo Elements
geoffreycrofte
77
6k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Become a Pro
speakerdeck
PRO
29
5.5k
Optimizing for Happiness
mojombo
379
70k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
113
20k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
Transcript
RubyͰ࡞ΔSimpleͰEasyͳ DSL Burikaigi 2022 ϧʔϜϗλϧΠΧ OKURA Masafumi, 2022
Ruby DSL
DSLͱʁ
None
Ҏ߱ͷ”DSL”ʮݴޠDSLʯΛࢦ͢ ͜ͱͱ͠·͢
RubyͰॻ͔ΕͨDSLͷྫʢRubyͰͷར༻ʣ • Rake • RSpec • FactoryBot • Sinatra •
Rails • ίʔϧόοΫɺόϦσʔγϣϯͳͲ
RSpecͷྫʢREADMEΑΓʣ
RubyͰॻ͔ΕͨDSLͷྫʢRuby֎Ͱͷར༻ʣ • Homebrew • Chef • Vagrant • Capistrano
HomebrewͷྫʢZoomͷCaskΑΓʣ
ݴޠDSLͷϝϦοτ • ϓϩάϥϛϯάݴޠͷϑϧػೳ͕͑Δ • มؔ • ಡΉ͚ͩͳΒϓϩάϥϛϯάݴޠͷ͕ࣝෆཁ • ϓϩάϥϛϯάݴޠͱઃఆϑΝΠϧͷ͍͍ͱ͜औΓ
ࣗݾհ • ໊લɿେխ࢙ • ॴଐɿϑϦʔϥϯε • ՝֎׆ಈɿKaigi on RailsνʔϑΦʔΨφΠβʔɺGrow.rb/Entaku.rb ΦʔΨφΠβʔɺAlba࡞ऀ
• ͖ͳRubyͷϝιουɿinstance_evalʢ2લͷൃදΛࢀরʣ
Alba • JSONγϦΞϥΠβʢҙͷΦϒδΣΫτΛJSONʹมʣ • ͍ʢྨࣅͷgemͱൺͯ2൪ʹ͍ʣ • 300ms͔͔͍ͬͯͨAPIΛ100ms·ͰߴԽͨ͠Γ • Ϣʔβʔ͕DSLΛॻ͘ͱAlba͕ͦΕʹैͬͯΦϒδΣΫτ͔ΒଐੑΛऔಘ ͯ͠JSONΛߏங͢Δ
• ৄࡉ https://github.com/okuramasafumi/alba Λࢀর
ࠓͷൃද ͷߏ
ೋ෦ߏ • ୈҰ෦ɿDSLʹؔ͢Δཧతߟ • RubyͱDSLɺϑΣʔζͷͳͲ • ୈೋ෦ɿDSLΛ࡞ͬͯΈΔ • ؆୯ͳDSLΛ࡞ͬͯΈΔ •
࣮͕SimpleͰ͍ํ͕EasyͳDSLΛ࡞Δ • λΠτϧճऩ
ୈҰ෦ɿ DSLʹ͍ͭͯͷ ߟ
ͳͥRubyͰ DSLΛॻ͘ͷ͔
RubyͰDSLΛॻ͘ཧ༝ • τοϓϨϕϧʢRubyͰ”main”ʣʹϝιουΛఆ͍ٛ͢͠ • ϝιουͷׅހ͕লུͰ͖ΔͷͰݟ͕ͨӳจͬΆ͘ͳΓ͍͢ • => ಡΈ͍͢ • ωετͨ͠ϒϩοΫͱ”eval”ϝιουͷΈ߹ΘͤΛ͏͜ͱͰෳ
ࡶͳϩδοΫදݱͰ͖Δ • => ॻ͖͍͢
ٯʹݴ͏ͱ • DSL୯ͳΔϝιουʢಛʹΫϥεϝιουʣ • evalͱϒϩοΫͷ͍ํ͑͞Θ͔ΕDSL࡞ΕΔʂ
Rubyʹ͓͚ΔDSLͷྨʹ͍ͭͯ • “main”ύλʔϯɿ”main”ʹϝιουΛఆٛ͢Δύλʔϯ • Rake, SinatraͳͲ • “include”ύλʔϯɿϞδϡʔϧʹσʔλͱϩδοΫΛू͠ɺ`include``extend`͠ ͨΫϥε͕ͦΕʹΞΫηεͰ͖Δύλʔϯ •
Railsͷଟ͘ͷDSL • ಠཱύλʔϯɿϞδϡʔϧΛ`include`͠ͳͯ͘DSLΛ͑Δ • RSpec, FactoryBotͳͲ
DSLͷ্࣮ͷίπ • ʮఆٛɾొʯʮࢦఆʯʮ࣮ߦʯͷϑΣʔζ͕͔Ε͍ͯΔͨΊɺ͜ ΕΒΛ͔ͬ͠Γ্ͭͭ͠खʹ݁߹͢Δ • ʮఆٛɾొʯϑΣʔζͰʮ࣮ߦʯϑΣʔζͰߦ͍͍ͨ͜ͱΛొ ͍ͯ͘͠ • ʮࢦఆʯϑΣʔζͰʮఆٛɾొʯ͞Εͨͷ͔Βࠓճద༻͍ͨ͠ ͷΛࢦఆ͢Δ
• ʮ࣮ߦʯϑΣʔζͰʮࢦఆʯ͞ΕͨͷΛ࣮ߦ͢Δ
ݱ࣮ͷDSLʹ͓͚ΔϑΣʔζͷ ఆٛ ࢦఆ ࣮ߦ 3BLF UBTL EFGBVMUͳͲ SBLFίϚϯυ 34QFD EFTDSJCF
JUͳͲ STQFDίϚϯυ 3BJMTόϦσʔγϣϯ A"DUJWF.PEFM7BMJEBUPSAΫ ϥεΛܧঝͨ͠Ϋϥεͷ࡞ WBMJEBUFTϝιου WBMJE ϝιου "MCB A"MCB3FTPVSDFAϞδϡʔϧ ΛAJODMVEFA͔ͯ͠Β ABUUSJCVUFTAͳͲ Ϋϥεબ TFSJBMJ[Fϝιου
ࠓճ࡞ΔDSLʹ͍ͭͯ • Γ͍ͨ͜ͱɿRailsͷόϦσʔγϣϯͷ؆қ൛ • ࣮ɿϞδϡʔϧΛ`include`͢ΔͱɺΫϥεϝιουͷ`.validates`ͱ Πϯελϯεϝιουͷ`#validate`͕ར༻ՄೳʹͳΔ • `.validates`ʹόϦσʔλͷ໊લͱΦϓγϣϯΛ͢ɺ͢ΔͱόϦ σʔλ͕Ϋϥεʹొ͞ΕΔ •
`#validate`ࣗͷΫϥεʹొ͞ΕͨόϦσʔλΛ࣮ߦ͢Δ
ʢଓʣࠓճ࡞ΔDSLʹ͍ͭͯ • ॳظঢ়ଶͰόϦσʔλ͕ଘࡏ͠ͳ͍ͨΊɺ`.validator`ϝιουͰఆ ͍ٛͯ͘͠ • ޙͰ`.validates`Ͱࢦఆ͢ΔͨΊͷ໊લͱɺϩδοΫʢόϦσʔγϣ ϯͷ༰ʣΛఆٛ͢Δ • ϩδοΫϒϩοΫͰఆٛ͢Δɺ͜ͷͱ͖ରͷΦϒδΣΫτͱඞ ཁͳʢ͞ΛόϦσʔτ͢ΔͳΒͦͷࣈʣΛड͚औΔ
͓·͚ͷߟ • ϓϩάϥϛϯάͰʮߏʯͱʮৼΔ͍ʯͷ2͕ͭॏཁ • cf. σβΠϯύλʔϯͷྨ • ʮఆٛɾొʯͱʮࢦఆʯߏͰʮ࣮ߦʯৼΔ͍ • ߏ੩తͰৼΔ͍ಈతɺͱ͍͑Δ
• DSLΛ͏ͱߏͱৼΔ͍ΛࣗવʹͰ͖ͯݟ௨͕͠ྑ͘ͳΔ
ୈೋ෦ɿ ࣮ࡍʹDSLΛ ࡞ͬͯΈΑ͏ʂ
ΤσΟλ͕։ ͖·͢