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tomocy
February 28, 2020
Programming
1
510
Work around Dart custom lint rule
Flutter Meetup Osaka #2
tomocy
February 28, 2020
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Transcript
Dart ಠࣗLintϧʔϧͷ ϫʔΫΞϥϯυ 2020/02/28 Flutter Meetup Osaka #2 tomocy (@towocy)
੩తղੳͱ
੩తղੳ ࣮ߦϑΝΠϧΛ࣮ߦ͢Δ͜ͱͳ͘ ղੳΛߦ͏͜ͱ https://ja.wikipedia.org/wiki/%E9%9D%99%E7%9A%84%E3%82%B3%E3%83%BC%E3%83%89%E8%A7%A3%E6%9E%90
੩తղੳΛར༻͢Δ͜ͱͰ ιʔείʔυͷ ิϑΥʔϚοτ͕Ͱ͖Δ
Lint ιʔείʔυʹજΉΛ ݕग़ɺࢦఠ͢Δ
None
Lint ιʔείʔυʹજΉΛ ݕग़ɺࢦఠ͢Δ
Lint ιʔείʔυʹજΉΛ ݕग़ɺࢦఠ͢Δ
analysis_options.yaml
analysis_opsions.yaml LintϧʔϧΛྻڍͯ͠ ݕग़ɺࢦఠͷରΛఆΊΔ
ಠࣗLintϧʔϧ
ಠࣗLintϧʔϧ ެࣜҎ֎ͷLintϧʔϧཉ͍͠
ಠࣗLintϧʔϧ dart-lang/linter#697ʹͯݕ౼த (2020/02/28࣌) https://github.com/dart-lang/linter/issues/697
ಠࣗLintϧʔϧ ͲͷΑ͏ʹ࣮ݱ͞ΕΔʹͤΑ dart-lang/linterΛ͏͜ͱʹͳΓͦ͏
None
LintRuleʢϧʔϧͷ໊લɺઆ໌ɺରͷNodeΛઃఆʣ VisitorʢରͷNodeʹର͢ΔݕূΛ࣮ʣ ʢSimpleAstVisitorҎ֎ʹVisitor͕͋Δʣ
None
1. LintRuleଆͰରͷNodeΛొ͓ͯ͘͠
2. VisitorଆͰͦͷNodeΛݕࠪ͢Δ 1. LintRuleଆͰରͷNodeΛొ͓ͯ͘͠
ಠࣗLintϧʔϧͷ ϫʔΫΞϥϯυ
WidgetͷίϯετϥΫλʔͷҾ ׳शతʹ໊લ͖Ҿʹ͢Δ https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html
WidgetͷίϯετϥΫλʔͷҾ ׳शతʹ໊લ͖Ҿʹ͢Δ ίϯετϥΫλʔͷҾ໊͕લ͖ҾͰͳ͍WidgetΛ ͱͯ͠ࢦఠ͢ΔLintϧʔϧ https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html
ಠࣗLintϧʔϧ use named parameters in widget constructors
None
None
tool/rule.dart LintϧʔϧͷܗͱͦͷςετΛੜ͢Δ Lintϧʔϧͷ໊લ
None
ςετ LintΤϥʔΛग़ͯ͠ཉ͍͠ߦʹ // Lint ίϝϯτΛॻ͘
None
Line Rule Lintϧʔϧͷ આ໌ͱৄࡉ
None
Lint Rule LintͷରͷNodeΛొ
Lint Rule LintͷରͷNodeΛొ ࠓճΫϥεఆٛͷNodeΛղੳ͢Δ
None
Visitor ରͷNodeͷղੳ
Visitor ରͷNodeͷղੳ WidgetͷίϯετϥΫλʔͷҾ͕ ໊લ͖ҾͰ͋Δ͔Λ֬ೝ
None
None
None
None
·ͱΊ
- LintͰίʔυͷΛݕग़ - analysis_options.yamlͰ ɹLintϧʔϧΛΈ߹Θͤ - ಠࣗLintϧʔϧ·ͩඇެࣜ
ϧʔϧΛकָͬͯ͘͠Flutter/Dart!
͋Γ͕ͱ͏͍͟͝·ͨ͠
Links ੩తղੳ https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html Issue ‘Support custom lint rule' https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html Stateless
Widget https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html Lint rule ‘use named parameters in widget constructors’ https://github.com/tomocy/dart-linter/tree/use_named_parameters_in_widget_constructors