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
Enter the OSS world [RuboCop] II. lost boundary
Search
Koichi ITO
December 09, 2017
Programming
1
2.5k
Enter the OSS world [RuboCop] II. lost boundary
Rails Developers Meetup 2017
https://railsdm.github.io/2017/
Koichi ITO
December 09, 2017
Tweet
Share
More Decks by Koichi ITO
See All by Koichi ITO
Welcome to the LLM Club
koic
0
270
RuboCop: Modularity and AST Insights
koic
3
4.5k
Carving the Way to Ruby Engineering
koic
3
880
Beyond the RuboCop Defaults
koic
3
4.3k
Minify Ruby Code
koic
2
2.3k
Permanent Agility
koic
37
9k
RuboCop: LSP and Prism
koic
3
5.1k
Organizational Pattern Hatching
koic
0
1.5k
A Practitioner's Journey from Ruby 1.8 to Present
koic
1
2.1k
Other Decks in Programming
See All in Programming
ISUCON研修おかわり会 講義スライド
arfes0e2b3c
1
450
状態遷移図を書こう / Sequence Chart vs State Diagram
orgachem
PRO
1
120
Composerが「依存解決」のためにどんな工夫をしているか #phpcon
o0h
PRO
1
270
Python型ヒント完全ガイド 初心者でも分かる、現代的で実践的な使い方
mickey_kubo
1
130
dbt民主化とLLMによる開発ブースト ~ AI Readyな分析サイクルを目指して ~
yoshyum
3
1k
なぜ「共通化」を考え、失敗を繰り返すのか
rinchoku
1
650
『自分のデータだけ見せたい!』を叶える──Laravel × Casbin で複雑権限をスッキリ解きほぐす 25 分
akitotsukahara
2
640
テストから始めるAgentic Coding 〜Claude Codeと共に行うTDD〜 / Agentic Coding starts with testing
rkaga
13
4.7k
猫と暮らす Google Nest Cam生活🐈 / WebRTC with Google Nest Cam
yutailang0119
0
140
RailsGirls IZUMO スポンサーLT
16bitidol
0
190
たった 1 枚の PHP ファイルで実装する MCP サーバ / MCP Server with Vanilla PHP
okashoi
1
260
おやつのお供はお決まりですか?@WWDC25 Recap -Japan-\(region).swift
shingangan
0
140
Featured
See All Featured
YesSQL, Process and Tooling at Scale
rocio
173
14k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Fireside Chat
paigeccino
37
3.5k
Scaling GitHub
holman
460
140k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
What’s in a name? Adding method to the madness
productmarketing
PRO
23
3.5k
The Art of Programming - Codeland 2020
erikaheidi
54
13k
Facilitating Awesome Meetings
lara
54
6.4k
Optimizing for Happiness
mojombo
379
70k
Raft: Consensus for Rubyists
vanstee
140
7k
Site-Speed That Sticks
csswizardry
10
690
The Invisible Side of Design
smashingmag
301
51k
Transcript
&OUFSUIF044XPSME <3VCP$PQ> **MPTUCPVOEBSZ &OUFSUIF044XPSME <3VCP$PQ> **MPTUCPVOEBSZ &OUFSUIF044XPSME <3VCP$PQ> **MPTUCPVOEBSZ &OUFSUIF044XPSME
<3VCP$PQ> **MPTUCPVOEBSZ &OUFSUIF044XPSME <3VCP$PQ> **MPTUCPVOEBSZ 5&$)1-":4)*#6:" ,PJDIJ*50FTN 4BU 3BJMT%FWFMPQFST.FFUVQ 5&$)1-":4)*#6:" ,PJDIJ*50FTN 4BU 3BJMT%FWFMPQFST.FFUVQ 5&$)1-":4)*#6:" ,PJDIJ*50FTN 4BU 3BJMT%FWFMPQFST.FFUVQ 5&$)1-":4)*#6:" ,PJDIJ*50FTN 4BU 3BJMT%FWFMPQFST.FFUVQ 5&$)1-":4)*#6:" ,PJDIJ*50FTN 4BU 3BJMT%FWFMPQFST.FFUVQ
None
None
8FMDPNFGFFECBDL (FNpMF HJU@TPVSDF HJUIVC \cSFQPcIUUQTHJUIVCDPN\SFQP^HJU^ ! HFNSBJMT HJUIVCSBJMTSBJMT HFNBDUJWFSFDPSEPSBDMF@FOIBODFEBEBQUFS HJUIVCbSTJNPSBDMF
FOIBODFE Preparing for upgrade to Rails 5.2 uses master branch instead of beta.
None
None
0DUPCFS 3VCP$PQSFMFBTFE
None
ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ &QJTPEFT 1BSU* 1BSU** 1BSU*** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ
&QJTPEFT 1BSU* ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ 1BSU** 1BSU*** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ
Enter the OSS world RuboCop I. presage comment
1SFNPOJUJPO
"3BJMTBQQMJDBUJPO EFWFMPQNFOU
3FWJFXDPNNFOU
ࣗͨͪͷࢦఠͨ͜͠ͱ ଞͷػձͰࢦఠ͞Ε͏Δ
None
044 ใԽٕज़Λ௨ͯ͡ʜ 3JEFPO044
IUUQTUXJUUFSDPNPOLTUBUVT
&QJTPEFT 1BSU* ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ 1BSU** 1BSU*** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ
ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ &QJTPEFT 1BSU* 1BSU** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ 1BSU***
Enter the OSS world RuboCop II. lost boundary
044ʹͦΕͳΓʹ͋Γɺ ΞϓϦέʔγϣϯ͔Βܨ͕͍ͬͯ ΔҎ্ɺଞਓࣄͷίʔυͰͳ͍ 3JEFPO044
ؔΘΓํͷελΠϧྫ w۩ମతʹࠔ͍ͬͯΔ w͓͠Ζͦ͏ wແཧ͠ͳ͍ όʔϯΞτ͠ͳ͍Α͏τϦΞʔδ͢Δ
$MJDLlCVHzMBCFM
3BJMT).PS)0%FQFOEFOU
8IBUJTUIJT$PQ
CCBUTPWSVCPDPQ <'JY>'JYA3BJMT)BT.BOZ0S)BT0OF%FQFOEFOUA JODPSSFDUMZqBHTAXJUI@PQUJPOTACMPDLT
8SJUFSFQSPEVDUJPOTQFDT DPOUFYUXJUI@PQUJPOTEFQFOEFOUEFTUSPZEP JUEPFTOPUSFHJTUFSBOP⒎FOTFEP FYQFDU@OP@P⒎FOTFT 36#:TUSJQ@JOEFOU DMBTT1FSTPO XJUI@PQUJPOTEFQFOEFOUEFTUSPZEP IBT@POFGPP FOE
FOE 36#: FOE FOE # Goal: False positive don't occur below ! class Person with_options dependent: :destroy do has_one :foo end end
XJUI@PQUJPOTPG"45 SVCZQBSTFFXJUI@PQUJPOTEFQFOEFOUEFTUSPZEPcBTTPDc BTTPDIBT@POFGPPFOE` ! CMPDL TFOEOJMXJUI@PQUJPOT IBTI
QBJS TZNEFQFOEFOU TZNEFTUSPZ BSHT QSPDBSHBTTPD TFOE MWBSBTTPD IBT@POF TZNGPP
XJUI@PQUJPOTPG"45 QPXFSFECZIUUQTHJUIVCDPNLPJDSVCZ@BTU@WJTVBMJ[FS
*NQMFNFOUBUJPO 3FE (SFFO 3FGBDUPS 5FTUDPEFJTNPSFPCWJPVTBOEFBTJFSUP VOEFSTUBOEUIBOUIFPQFSBUJPOPG"45
0QFOB13
$POWFSTBUJPO AJT@IBT@NBOZ@PS@IBT@POF@XJUIPVU@PQUJPOT AJT BOFYJTUJOHNFUIPEOBNF
"CPVU/BNJOH1SFEJDBUF/BNF
EFG@OPEF@NBUDIFS EFG@OPEF@NBUDIFSJT@YYY 1"55&3/ TFOEOJM \IBT@NBOZIBT@POF^@ 1"55&3/ def_node_matcher dynamic
defines a method which applies a pattern to an AST node. /PUF/BNJOH1SFEJDBUF/BNFDPQEPFTOPUBXBSFPG EZOBNJDBMMZEFpOFENFUIPEPSMPXFS -JLFEFpOF@NFUIPE EFpOF@TJOHMFHPO@NFUIPE
$POWFSTBUJPO
"OUJGBU13
ผͱͯ͠Γग़ͤΔ Α͏Ͱ͋Εผͷ13Ͱ ରॲ͢ΔΑ͏ʹ͍ͯ͠Δ ͱͱજΜͰ͍ͨͱͷରቂ ͪΖΜͦͷ13Ͱͷมߋ͕దͰ͋Εɺͦͷ13Ͱ ରԠ͢Δ
CCBUTPWSVCPDPQ "EEOFXA*OUFSOBM"⒎BJST%ZOBNJD1SFEJDBUF/BNFADPQ
5IFpSTUEFTJHO /BNJOH 1SFEJDBUF/BNF &YJTUJOH DPQDMBTT
5IFpSTUEFTJHO /BNJOH 1SFEJDBUF/BNF NPEVMF $POpHVSBCMF 1SFEJDBUF/BNJOH /BNJOH 1SFEJDBUF/BNF NJYJO &YUSBDU
NPEVMF $IFDLTUBUJD NFUIPET &YJTUJOH DPQDMBTT 4IBSF DPOpHVSBUJPO
5IFpSTUEFTJHO /BNJOH 1SFEJDBUF/BNF NPEVMF $POpHVSBCMF 1SFEJDBUF/BNJOH /BNJOH 1SFEJDBUF/BNF NJYJO *OUFSOBM"⒎BJST
%ZOBNJD 1SFEJDBUF/BNF NJYJO &YUSBDU NPEVMF "QQFOE OFXDMBTT $IFDLTUBUJD NFUIPET $IFDLEZOBNJD NFUIPET &YJTUJOH DPQDMBTT 4IBSF DPOpHVSBUJPO
*NQMFNFOUBUJPOUFSN QPXFSFECZIUUQTHJUIVCDPNZZBHJKQDBM
0QFOB13
None
$POWFSTBUJPO
$POWFSTBUJPO
*OUFSOBM"⒎BJSTEFQBSUNFOU JOUFSOBM"1* ˣ /BNJOHEFQBSUNFOU QVCMJTIFE"1* .BLFTFOTF✨
CCBUTPWSVCPDPQ "EEA.FUIPE%FpOF.BDSPTAPQUJPOUP A/BNJOH1SFEJDBUF/BNFADPQ
0QFOB13
5IFTFDPOEEFTJHO /BNJOH 1SFEJDBUF/BNF /BNJOH 1SFEJDBUF/BNF "EE .FUIPE%FpOF.BDSPT PQUJPOUPDPOpHVSBUJPO *OUFSOBM *NQSPWFNFOU
&YJTUJOH DPQDMBTT
%FpOFEFGBVMUQVCMJTIFE"1* DPOpHEFGBVMUZNM /BNJOH1SFEJDBUF/BNF .FUIPEEFpOJUJPONBDSPTGPSEZOBNJDBMMZHFOFSBUFENFUIPET .FUIPE%FpOJUJPO.BDSPT EFpOF@NFUIPE EFpOF@TJOHMFUPO@NFUIPE RuboCopར༻ऀ͕͏σϑΥϧτͷެ։ϝ ιουΛconfig/default.ymlʹఆٛ͢Δ
%FpOFJOUFSOBM"1* SVCPDPQZNM /BNJOH1SFEJDBUF/BNF .FUIPEEFpOJUJPONBDSPTGPSEZOBNJDBMMZHFOFSBUFENFUIPE .FUIPE%FpOJUJPO.BDSPT EFpOF@NFUIPE EFpOF@TJOHMFUPO@NFUIPE EFG@OPEF@NBUDIFS EFG@OPEF@TFBSDI RuboCopࣗମͷ։ൃͰ͏෦తͳϝιου
ΛՃ͑ͯ.rubocop.ymlʹఆٛ͢Δ
w ར༻ऀʹରͯ͠ಈతͳϝιο υఆٛͷνΣοΫΛҰ؏͠ ͯͰ͖ΔΑ͏ʹͳͬͨ w ಈతͳϢʔβʔϝιουఆٛ ͕૿͑ΔΑ͏Ͱ͋ΕઃఆΛ Ճ͢ΕΑ͍ *NQSPWFEEFTJHO
None
w 044DPNNVOJUZJT $PODMVTJPO
044 1SPQSJFUBSZ 4PDJBM 6OTPDJBM FH"OBQQMJDBUJPO EFWFMPQNFOU BGUFS(JU)VC FH"OBQQMJDBUJPO EFWFMPQNFOU CFGPSF(JU)VC
*UJTPQFOUPUIF QVCMJDVOEFS044 MJDFOTFCVUUIFSFJT OPEJBMPHVF 044Y6OTPDJBM1VCMJDSFQP 044DPNNVOJUZ
044 1SPQSJFUBSZ 4PDJBM 6OTPDJBM FH"OBQQMJDBUJPO EFWFMPQNFOU BGUFS(JU)VC FH"OBQQMJDBUJPO EFWFMPQNFOU CFGPSF(JU)VC
*UJTPQFOUPUIF QVCMJDVOEFS044 MJDFOTFCVUUIFSFJT OPEJBMPHVF 044Y4PDJBM044DPNNVOJUZ 044DPNNVOJUZ
SVCZPOSBJMTPSH "O044DPNNVOJUZ
None
$MJDLIFSF
None
None
w ϓϩδΣΫτͰѻ͍ͬͯΔίʔυ ͱ044ͷίʔυܨ͕ΓͰ͋Δ &OUFSUIF044XPSME w Πϯλʔωοτͱ͍͏ڥքͷͳ͍ ੈքͰΓͱΓ͢Δ͓͠Ζ͞ w ࠷ॳͷҰา͕͚͠Ε044(BUF
ͳͲͷࢀՃ͔Β࢝ΊΔͷҰͭ ·ͱΊ
࣍ճ༧ࠂ
ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ &QJTPEFT 1BSU* 1BSU** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ 1BSU***
ࠒ͍ͬͯΔ044ͰͷൃݟΛ VQTUSFBNʹؐݩ͢Δ &QJTPEFT 1BSU* 1BSU** ιʔγϟϧίʔσΟϯάΛ௨ͯ͡Ͳ͏ Ϣʔβʔ͕͏ܗʹͳ͍͔ͬͯ͘ͷ 1BSU***
&OUFSUIF044XPSME <3VCP$PQ> *** &OUFSUIF044XPSME <3VCP$PQ> *** &OUFSUIF044XPSME <3VCP$PQ> ***
l Ұͷ͏ͪίʔυॻ͖ɺ 3VCZ,BJHJͳͲͷΓؒ Ͱ։ൃऀͨͪͱͦͷΛ͢Δ ʔ3VCZ,BJHJ1BSUZΑΓ
FOE