kotlin linter

Kotlin Fest（ https://kotlin.connpass.com/event/91666/ ）で発表したkotlinのlintに関する発表資料です。

Transcript

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47. © DMM.com X ίʔυʹ͢Δͱ override fun visit( node: ASTNode, autoCorrect: Boolean, emit: ( offset: Int, errorMessage: String, canBeAutoCorrected: Boolean ) -> Unit ) { if (node.elementType == KtNodeTypes.VALUE_ARGUMENT_LIST) { val isError = node.children().any { it.elementType == KtTokens.COMMA && it.treeNext.elementType == KtTokens.WHITE_SPACE && !it.treeNext.text.contains("\n") } if (isError) { emit( node.startOffset, "should line break", false ) } } } OPEF͕
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49. © DMM.com X ίʔυʹ͢Δͱ override fun visit( node: ASTNode, autoCorrect: Boolean, emit: ( offset: Int, errorMessage: String, canBeAutoCorrected: Boolean ) -> Unit ) { if (node.elementType == KtNodeTypes.VALUE_ARGUMENT_LIST) { val isError = node.children().any { it.elementType == KtTokens.COMMA && it.treeNext.elementType == KtTokens.WHITE_SPACE && !it.treeNext.text.contains("\n") } if (isError) { emit( node.startOffset, "should line break", false ) } } } ࣍ͷۭനʹ
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50. © DMM.com X ίʔυʹ͢Δͱ override fun visit( node: ASTNode, autoCorrect: Boolean, emit: ( offset: Int, errorMessage: String, canBeAutoCorrected: Boolean ) -> Unit ) { if (node.elementType == KtNodeTypes.VALUE_PARAMETER_LIST) { val isError = node.children().any { it.elementType == KtTokens.COMMA && it.treeNext.elementType == KtTokens.WHITE_SPACE && !it.treeNext.text.contains("\n") } if (isError) { emit( node.startOffset, "should line break", false ) } } } վߦ͞Εͯ
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53. © DMM.com X KBSΛ࡞Δ KBSΛ࡞੒͢Δɻ ./gradlew jar CVJMEMJCT഑Լʹ࡞੒͞ΕΔɻ
54. © DMM.com ࡞ͬͨΧελϜϧʔϧΛద༻͢Δ
55. © DMM.com X ࡞ͬͨΧελϜϧʔϧΛద༻͢Δ $ ktlint -R ktlint-custom-rulseset.jar “src/main/**/*.kt" 3
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56. © DMM.com X LPUMJOUFSHSBEMFΛ࢖͍ͬͯΔ৔߹ buildscript { dependencies { classpath "gradle.plugin.org.jmailen.gradle:kotlinter-gradle:1.11.1" classpath files('lint/ktlint/ktlint-custom-ruleset.jar') } } DMBTTQBUIΛ௨͢ $ ./gradlew lintKotlin ... > Task :app:lintKotlinMain Lint error > ...kt:43:17: should line break Lint error > ....kt:43:33: should line break ͦΕ͚ͩͰ0,ɻ
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58. © DMM.com X GPSNBUΛ͔͚Δ LUMJOU͸ܯࠂΛग़͚ͩ͢Ͱͳ͘ɺ͋Δఔ౓GPSNBUΛ͔͚Δ͜ͱ ͕Ͱ͖Δɻ LPMJOUFSHSBEMFͷ৔߹ $ ktlint -F “src/main/**/*.kt” $ ./gradlew formatKotlin
59. © DMM.com X GPSNBUΛ͔͚Δ data class A( val bb: String, val cc: String, val dd: String ) #FGPSF "GUFS data class A( val bb: String, val cc: String, val dd: String ) $ ./gradlew formatKotlin
60. © DMM.com X ΧελϜϧʔϧͷ৔߹ ΧελϜϧʔϧͷ৔߹Ͱ΋ɺGPSNBUΛ͔͚Δ͜ͱ͸Ͱ͖Δɻ
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61. © DMM.com X ઌ΄Ͳͷίʔυ override fun visit( node: ASTNode, autoCorrect: Boolean, emit: ( offset: Int, errorMessage: String, canBeAutoCorrected: Boolean ) -> Unit ) { if (node.elementType == KtNodeTypes.VALUE_PARAMETER_LIST) { val isError = node.children().any { it.elementType == KtTokens.COMMA && it.treeNext.elementType == KtTokens.WHITE_SPACE && !it.treeNext.text.contains("\n") } if (isError) { emit( node.startOffset, "should line break", false ) } } } GPSNBUΦϓγϣϯ͕͍ͭͯΔ࣌
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62. © DMM.com X ઌ΄Ͳͷίʔυ override fun visit( node: ASTNode, autoCorrect: Boolean, emit: ( offset: Int, errorMessage: String, canBeAutoCorrected: Boolean ) -> Unit ) { if (node.elementType == KtNodeTypes.VALUE_PARAMETER_LIST) { val isError = node.children().any { it.elementType == KtTokens.COMMA && it.treeNext.elementType == KtTokens.WHITE_SPACE && !it.treeNext.text.contains("\n") } if (isError) { emit( node.startOffset, "should line break", false ) if (autoCorrect) { format(node) } } } } ௥Ճ
63. © DMM.com X GPSNBUϝιουͷத਎ private fun format(node: ASTNode) { val indent = node.indentSize() node.children().forEach { if (..লུ..) { (it.treeNext as LeafPsiElement).rawReplaceWithText( "\n" + " ".repeat(indent) ) } } } GPSNBUϝιουͷத਎ͷྫɻ
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64. © DMM.com X GPSNBUϝιουͷத਎ private fun format(node: ASTNode) { val indent = node.indentSize() node.children().forEach { if (..লུ..) { (it.treeNext as LeafPsiElement).rawReplaceWithText( "\n" + " ".repeat(indent) ) } } } GPSNBUϝιουͷத਎ͷྫɻ
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65. © DMM.com X ΧελϜϧʔϧͷ৔߹ data class A( val bb: String, val cc: String, val dd: String ) #FGPSF "GUFS data class A( val bb: String, val cc: String, val dd: String ) $ ./gradlew formatKotlin
66. © DMM.com X EFUFLU
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68. © DMM.com X HSBEMF
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71. © DMM.com X ࢖͍ํ $ ./gradlew detektCheck : Ruleset: comments Ruleset: complexity - 20min debt LongMethod - 29/20 - [onCreate] at ...kt:45:3 Ruleset: detekt-custom-rules - 5min debt line-break-in-args-list - [A] at ...kt:42:13 : Overall debt: 25min Complexity Report: - 489 lines of code (loc) - 416 source lines of code (sloc) - 263 logical lines of code (lloc) - 3 comment lines of code (cloc) - 46 McCabe complexity (mcc) - 2 number of total code smells - 0 % comment source ratio - 174 mcc per 1000 lloc - 7 code smells per 1000 lloc Project Statistics: - number of properties: 32 - number of functions: 24 - number of classes: 26 - number of packages: 3 - number of kt files: 12 : detekt finished in 1804 ms.
72. © DMM.com X HSBEMF
    QSPKFDUʹಋೖ͢Δ৔߹ $ ./gradlew detektCheck : Ruleset: comments Ruleset: complexity - 20min debt LongMethod - 29/20 - [onCreate] at ...kt:45:3 Ruleset: detekt-custom-rules - 5min debt line-break-in-args-list - [A] at ...kt:42:13 : Overall debt: 25min Complexity Report: - 489 lines of code (loc) - 416 source lines of code (sloc) - 263 logical lines of code (lloc) - 3 comment lines of code (cloc) - 46 McCabe complexity (mcc) - 2 number of total code smells - 0 % comment source ratio - 174 mcc per 1000 lloc - 7 code smells per 1000 lloc Project Statistics: - number of properties: 32 - number of functions: 24 - number of classes: 26 - number of packages: 3 - number of kt files: 12 : detekt finished in 1804 ms. -JOUͷ݁Ռ
73. © DMM.com X HSBEMF
    QSPKFDUʹಋೖ͢Δ৔߹ $ ./gradlew detektCheck : Ruleset: comments Ruleset: complexity - 20min debt LongMethod - 29/20 - [onCreate] at ...kt:45:3 Ruleset: detekt-custom-rules - 5min debt line-break-in-args-list - [A] at ...kt:42:13 : Overall debt: 25min Complexity Report: - 489 lines of code (loc) - 416 source lines of code (sloc) - 263 logical lines of code (lloc) - 3 comment lines of code (cloc) - 46 McCabe complexity (mcc) - 2 number of total code smells - 0 % comment source ratio - 174 mcc per 1000 lloc - 7 code smells per 1000 lloc Project Statistics: - number of properties: 32 - number of functions: 24 - number of classes: 26 - number of packages: 3 - number of kt files: 12 : detekt finished in 1804 ms. -JOUͷमਖ਼ʹ͔͔Δ࣌ؒ
74. © DMM.com X HSBEMF
    QSPKFDUʹಋೖ͢Δ৔߹ $ ./gradlew detektCheck : Ruleset: comments Ruleset: complexity - 20min debt LongMethod - 29/20 - [onCreate] at ...kt:45:3 Ruleset: detekt-custom-rules - 5min debt line-break-in-args-list - [A] at ...kt:42:13 : Overall debt: 25min Complexity Report: - 489 lines of code (loc) - 416 source lines of code (sloc) - 263 logical lines of code (lloc) - 3 comment lines of code (cloc) - 46 McCabe complexity (mcc) - 2 number of total code smells - 0 % comment source ratio - 174 mcc per 1000 lloc - 7 code smells per 1000 lloc Project Statistics: - number of properties: 32 - number of functions: 24 - number of classes: 26 - number of packages: 3 - number of kt files: 12 : detekt finished in 1804 ms. ෳࡶ౓
75. © DMM.com X HSBEMF
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127. © DMM.com X ̎
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128. © DMM.com X ̎
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132. © DMM.com X ̎
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