SwiftLint実践入門

2017/10/02 俺コン Day. 1
※2017/10/03 17時頃に資料を上げ直しています。

Transcript

1. SwiftLint࣮ફೖ໳ @akatsuki174
2. ࣗݾ঺հ • ਢ౻ຘ • iOSΤϯδχΞ • גࣜձࣾZaimॴଐ • Twitter, Qiita, SlideShare, Github, SpeakerDeck →akatsuki174
4. એ఻ 10/13(ۚ)ɺ10/20(ۚ)ͷ2days 19:20ʙ
5. ͓ئ͍ iOSDCશମɺτʔΫʹର͢ΔΞϯέʔτ΁ͷ ճ౴ΛΑΖ͓͘͠ئ͍͠·͢ʂ
6. ࠓ೔ͷτʔΫ
7. ࠓ೔ͷτʔΫ جૅ͸লུɻ࣮຿ͰͲ͏࢖͏ͷ͕ ͍͍͔ʹ͍ͭͯ࿩͠·͢ɻ
8. ࠓ೔ͷτʔΫ ࢀՃܕͷτʔΫʹͳΓ·͢ʂ͓खݩʹ ࣗ෼ͷ.swiftlint.ymlΛஔ͍͍͚ͯͨͩΔͱɻ
9. ɾSwiftLintͷ࠷৽ͷ৘ใʹ͍ͭͯ঺հ ɾΈͳ͞ΜͲͷϧʔϧΛͲͷΑ͏ʹ ɹ࠾༻ͯ͠·͔͢ʁ ɾࢲ͕ߟ͑Δ࠷ڧͷ.swiftlint.yml ɾCIपΓͷ࿩ ࠓ೔ͷ֓ཁ
10. SwiftLintͷ࠷৽৘ใ
11. ɾϧʔϧ૯਺105 ɾ2015/05/18ʹॳϦϦʔε ɾɾҎ߱ɺ42ճͷϦϦʔεΛॏͶ͍ͯΔ ɾStar਺໿7,700 SwiftLintͷࠓ ※͜͜Ͱͷ৘ใ͸2017/10/02࣌఺Ͱͷ৘ใͰ͢
12. SwiftLint 1.0.0͸ʁ
13. SwiftLint0.22 ʢݱࡏͷ࠷৽verʣ
14. ɾωετ͞Εͨconfigͷѻ͍ͷมߋ ɾɾωετ͞Εͨࢠconfig͸·Δͬͱ ɹɹ਌configͱஔ͖׵ΘΔͷͰ͸ͳ͘ɺ ɹɹ਌ͷconfigͱϚʔδ͞ΕΔ SwiftLint 0.22ͷओཁͳมߋ
15. ɾωετ͞Εͨconfigͷѻ͍ͷมߋ ɾɾωετ͞Εͨࢠconfig͸·Δͬͱ ɹɹ਌configͱஔ͖׵ΘΔͷͰ͸ͳ͘ɺ ɹɹ਌ͷconfigͱϚʔδ͞ΕΔ SwiftLint 0.22ͷओཁͳมߋ ʁ
16. ɾલఏ ɾɾҟͳΔ.swiftlint.ymlΛɺҟͳΔ ɹɹσΟϨΫτϦ֊૚ʹஔ͘͜ͱͰ ɹɹͦΕͧΕʹ߹ͬͨϧʔϧΛద༻͢Δ ɹɹ͜ͱ͕Ͱ͖ͨ ωετ͞Εͨconfig
17. ɾ ᵓᴷᴷ ViewController.swift ᵓᴷᴷ .swiftlint.yml ᵋᴷᴷ Tests ᵋᴷᴷ Test.swift ᵋᴷᴷ .swiftlint.yml ਤղ line_length: 110 disabled_rules: - force_cast - force_try
18. ਌σΟϨΫτϦͱࢠσΟϨΫτϦ྆ํʹ .swiftlint.yml͕͋ͬͨ৔߹ ɾࠓ·Ͱ ɾɾࢠσΟϨΫτϦ಺Ͱ͸ࢠσΟϨΫτϦͷ ɹɹ.swiftlint.yml͔͠ద༻͞Εͳ͔ͬͨ ωετ͞Εͨconfig
19. ਤղʢैདྷʣ TestsσΟϨΫτϦ಺Ͱద༻͞ΕΔϧʔϧ͸ TestsҎԼʹॻ͔Ε͍ͯΔϧʔϧͷΈ ɾ ᵓᴷᴷ ViewController.swift ᵓᴷᴷ .swiftlint.yml ᵋᴷᴷ Tests ᵋᴷᴷ Test.swift ᵋᴷᴷ .swiftlint.yml line_length: 110 disabled_rules: - force_cast - force_try
20. ɾ0.22Ҏ߱ ɾɾࢠσΟϨΫτϦͱ਌σΟϨΫτϦͷ ɹɹ.swiftlint.yml͕Ϛʔδ͞Εͨ΋ͷ͕ ɹɹࢠσΟϨΫτϦ಺Ͱద༻͞ΕΔ ωετ͞Εͨconfig
21. ਤղʢ0.22Ҏ߱ʣ ɾ ᵓᴷᴷ ViewController.swift ᵓᴷᴷ .swiftlint.yml ᵋᴷᴷ Tests ᵋᴷᴷ Test.swift ᵋᴷᴷ .swiftlint.yml line_length: 110 line_length: 110 disabled_rules: - force_cast - force_try Ϛʔδʂ ࢠσΟϨΫτϦͰ͸਌σΟϨΫτϦͰ ࢦఆ͍ͯ͠Δϧʔϧ΋ద༻͞ΕΔ
22. ɾmessageͷͳ͍XCTFail͸ڐ༰͠ͳ͍ ɾɾxctfail_message ɾ༨෼ͳdisableίϚϯυ͕ͳ͍͔νΣοΫ ɾɾsuperfluous_disable_command ɾɾʮ// swiftlint:disableʯΛ࢖ͬͯΔ͚Ͳ ɹɹҾ͔͔ͬΔίʔυ͕ͳ͍࣌ʹΤϥʔ SwiftLint 0.22ͷओཁͳมߋ
23. SwiftLint0.21 ʢ࠷৽verͷ1ͭखલʣ
24. ɾରԠόʔδϣϯͷมߋ ɾɾXcode 8.3Ҏ্ɺSwift 3.1Ҏ্͕ඞਢ ɾϧʔϧΛੜ੒͢ΔίϚϯυͷ௥Ճ ɾɾswiftlint generate-docs SwiftLint 0.21ͷओཁͳมߋ
25. ɾΞΫηεम০ࢠʹؔ͢Δϧʔϧͷ௥Ճ ɾɾprivate_over_fileprivate ɾɾɾTopLevelʹ͋Δfileprivate͸private΁ ɾɾstrict_fileprivate ɾɾɾશͯͷfileprivateΛνΣοΫ ɾɾɾSwift4Ͱ໾ʹཱͭ SwiftLint 0.21ͷओཁͳมߋ
26. ɾઃఆΦϑʹͳ͍ͬͯΔϧʔϧҰཡΛग़ྗ͢Δ ɾɾswiftlint rules - - disabled ɾ৽͍͠ܗࣜͷKVOํࣜͰॻ͍͍ͯΔ͔ ɾɾblock_based_kvo ɾɾʮWhat's New in Cocoa TouchʯͰ৽͍͠ ɹɹϒϩοΫϕʔεͷه๏͕঺հ͞Εͨ SwiftLint 0.21ͷओཁͳมߋ
27. ɾconfigͰ؀ڥม਺͕࢖͑ΔΑ͏ʹ ɾɾ${ԿΒ͔ͷม਺}ͱॻ͚͹OK SwiftLint 0.21ͷओཁͳมߋ
28. ΈΜͳͷSwiftLintࣄ৘
29. ɾσϑΥϧτͰ༗ޮʹͳ͍ͬͯΔϧʔϧ ɾσϑΥϧτͰ͸120ӽ͑ͨΒܯࠂɺ200 ɹӽ͑ͨΒΤϥʔ ٞ୊̍ɿline_length
30. AppDelegateͷ༷͝ࢠ ٞ୊̍ɿline_length
31. ίϝϯτ௕͗ͯ͢Τϥʔൃੜ ٞ୊̍ɿline_length Έͳ͞ΜͲ͏ͯ͠·͔͢ʁ
32. ɾͲΜͳͱ͜ΖͰҾ͔͔ͬͬͯΔʁ ɾɾσϑΥͰೖ͍ͬͯΔίϝϯτ ɾɾඪ४ͷϝιου໊ ɾͲΜͳ࣌ʹ௕͍ίʔυΛॻ͍ͯ͠·͏ʁ ɾɾifͳͲͰ৚݅Λෳ਺ฒ΂ͨ࣌ ɾɾifͱreturnΛ1ߦͰ·ͱΊͨ࣌ ٞ୊̍ɿline_length
33. ɾࢲͷதͰͷ݁࿦ ɾɾඪ४ϝιουͰҾ͔͔ͬΔͳΒ ɹɹແཧʹकΒͳ͍͍ͯ͘ͷͰ͸ʁ ɾɾ120ӽ͑Δ͘Β͍ͷίʔυΛॻ͍ͯ ɹɹ͠·ͬͨΒࣗ෼Ͱదٓվߦ ɾɾline_length͸disableͰ͍͍ͷͰ͸ʁ ٞ୊̍ɿline_length
34. ɾσϑΥϧτͰ༗ޮʹͳ͍ͬͯΔϧʔϧ ɾߦ຤ʹ༨ܭͳλϒɺۭനจࣈ͕ೖͬͯͨΒ ɹܯࠂ͕ग़Δ ٞ୊̎ɿtrailing_whitespace
35. ʢXcodeͷઃఆʹ΋ΑΔ͕ʣվߦ࣌ʹࣗಈ Ͱૠೖ͞ΕΔλϒʹ͍͍͍ͭͯͪͪ ݴΘΕΔͷ͸͏͍͟ʢʈωʈ#ʣűƅŝűƅŝ ٞ୊̎ɿtrailing_whitespace Έͳ͞ΜͲ͏ͯ͠·͔͢ʁ
36. ɾࢲͷதͰͷ݁࿦ ɾɾશۭ֯നจࣈ͸ʮInvalid charactor in ɹɹsource fileʯΤϥʔ͕ग़Δͦ͠Μͳ ɹɹࠔΔ͜ͱͳ͍ͷͰ͸ʁ ɾɾtrailing_whitespace͸disableͰ͍͍ʁ ٞ୊̎ɿtrailing_whitespace
37. ࢲ͕ߟ͑ͨ࠷ڧͷ .swiftlint.yml
38. ͝ΊΜͳ͍͞ ؒʹ߹ͬͯͳ͍Ͱ͢
39. ׬શ൛͸ޙ೔QiitaͰ ΞΧ΢ϯτ͸@akatsuki174Ͱ͢
40. ࠓ೔͸ద༻ج४ͷ ࿩͚ͩ͠·͢
41. ɾॻ͘ਓʹΑͬͯ͹Β͖͕ͭग़ͦ͏ͳ ɹࠣࡉͳ෦෼͸ϧʔϧΛద༻ͯ͠Χόʔ ɾɾcolon, comma, empty_parameters etc. ɾ୯ͳΔೖྗϛεͬΆ͍ͱ͜ΖΛࢦఠͯ͠ ɹ͘ΕΔϧʔϧ͸ద༻ ɾɾclosing_brace, closure_spacing etc. ద༻ج४
42. ɾద༻͞Εͯͳ͍ͱෆ֨޷ͳϧʔϧ͸ద༻ ɾɾclosure_end_indentation, ɹɹclosure_parameter_position etc. ɾ৔߹ʹΑΔ΋ͷ͸ෆద༻ɺ΋͘͠͸ ɹ৚݅Λ෇͚Δ ɾɾforce_cast, identifier_name etc. ద༻ج४
43. ɾ΍Γ͗͢͡ΌͶʁͬͯࢥͬͨΒෆద༻ ɾɾline_length, ɹɹconditional_returns_on_newline etc. ద༻ج४
44. CIपΓͷ࿩
45. ɾPRΛग़ͨ࣌͠ʹDanger͕.swiftlint.ymlʹ ɹҾ͔͔ͬͬͯͳ͍͔νΣοΫ ɾɾҾ͔͔͍ͬͬͯͨΒ༰ࣻͳ͘ίϝϯτ ฐࣾͷ৔߹
46. ɾSwiftLintͷREADME.mdʹfastlaneͷ ɹactionͱͯ͠࢖͑Δͱॻ͔Ε͍ͯΔ fastlane
47. SwiftLintΛ࢖ͬͯ όϦόϦշద։ൃ͠·͠ΐ͏ʂ
48. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ