RuboCopのカスタムCopを書いてContributionしてみる - Contributing a Custom Cop to RuboCop: A Hands-on Experience

Gotanda.rb#60 (https://gotanda-rb.connpass.com/event/327545/) の発表資料です。

Transcript

1. 3VCP$PQͷΧελϜ$PQΛॻ͍ͯ $POUSJCVUJPOͯ͠ΈΔ
   !NP[OJPO
   
   (PUBOEBSC
    
3. ࣗݾ঺հ
4.  4NBSU#BOL
   *OD
   
   4PGUXBSF
   &OHJOFFS
   
   1FSM-JOU
   0SJHJOBM
   "VUIPS 5BJLJ
   ,BXBLBNJ
   !NP[OJPO !NP[OJPO !NP[OJPO
5. ࣄͷൃ୺
6.  ͋Δ೔ͷίʔυϨϏϡʔʹͯ
7.  SFG
   IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFJTTVFT
8.  SFG
   IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFJTTVFT
9.  ఏҊ࿦ࢫ  ΠϯςάϨʔγϣϯςετ͸Ϣʔβʔͷ໨͓ΑͼߦಈΛ໛฿͢΂͖΋ͷ͕ͩɺ
   ϔϧύʔΛ࢖͏ͱ࣮ࡍͷύε͕Θ͔Γʹ͍͘ɻ
    5%%ͷϓϥΫςΟεΛ࣮ફ͢Δʹ͋ͨͬͯɺςετΛ࠷ॳʹॻ͘ࡍʹ࣮ࡍͷ
   63-͸Θ͔͍ͬͯΔҰํɺSPVUFTSC͸·ͩฤू͞Ε͍ͯͳ͍ͷͰ
   ϔϧύʔؔ਺͸·ͩະఆͰ͋Δ
    ϧʔτΛมߋͨ͠ͷʹ΋ؔΘΒͣϔϧύʔؔ਺͕ͦΕʹࣗಈ௥ैͯ͠
   $*͕άϦʔϯʹͳΔͷ͸ةݥͰ͋Δ
   
   ςετʹ͓͍ͯ)551
   .FUIPEؔ਺ͷୈҰҾ਺͸ϔϧύʔؔ਺Ͱ͸ͳ͘
   จࣈྻʹ͢Δͱ͍͏ίʔυن໿͸Ͳ͏͔ʁ
10.  SFG
    IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFJTTVFT ಉҙ
11.  SFG
    IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFJTTVFT ಉҙʜʜ͔Βͷʮ͸͍ʯ
12. ࣮ࡍʹॻ͍ͯΈΔ
13.  SVCPDPQSVCPDPQSBJMT  ASVCPDPQSBJMTTUZMFHVJEFA
    ͱରԠ͍ͯ͠Δ
     ASVCPDPQSVCPDPQA
    Ͱ͋Ε͹
    ASVCPDPQSVCZTUZMFHVJEFA
    
    ͱ͍͏;͏ʹ࣮૷ͱରԠ͢ΔελΠϧΨΠυ͕͋Δ
    ແ͍΍ͭ΋͋Δ
     ελΠϧΨΠυΛॻ͍͔ͯΒͦͷ࣮૷Λॻ͘ͱ͍͏ྲྀΕ
    Ͱ͋Ζ͏
14.  SVCPDPQSBJMTTUZMFHVJEF
15.  SVCPDPQSVCPDPQSBJMT
    JNQM
16.  SVCPDPQSVCPDPQSBJMT
    UFTU
17.  DPQͷ࣮૷  جຊతʹ΍Ε͹Ͱ͖Δʂʂʂ
     ࣮૷͍ͯ͠Δ಺༰͕୯७͔ͩΒͰ͸ʁʁ
     ઌߦ࣮૷͕େྔʹ͋ΔͷͰͦΕΛࢀߟʹͰ͖Δͷ͸͋Γ͕͍ͨ
     AFYQFDU@P ff FODFA
    
    AFYQFDU@OP@P ff FODFA
    ͕ۃΊͯ࢖͍΍͍͢
     ೖྗͱظ଴ग़ྗ͕ಉډ͍ͯ͠Δ઱͔ͳॻ͖ຯ
     ࣮ࡍͷϓϩμΫγϣϯίʔυͰ΋͜͏͍͏࢓૊Έ͸ਅࣅ͍ͨ͠
18. ·ͱΊ
19.  ·ͱΊ ΍Ε͹Ͱ͖Δʂʂʂʂ
    ΧελϜ$PQͷ֦ுʹΊͬͪΌ։͍͍ͯͯ͋Γ͕͍ͨ
    1VCMJDͳ$PQ͡Όͳ͍1SJWBUFͳϓϩδΣΫτͷ$PQ΋
    εοͱॻ͍͍͚ͯͦ͏Ͱྑ͍Ͱ͢Ͷ
20.  Ұํͦͷ͜Ζ SFG
    IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFQVMM
    
21.  Ұํͦͷ͜Ζ SFG
    IUUQTHJUIVCDPNSVCPDPQSBJMTTUZMFHVJEFQVMM
    
    EBZT
    BHP