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Add inspection "Redundant runCatching {}" (related to KT-25621)

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This commit is contained in:
Mikhail Glukhikh
2018-08-23 13:30:04 +03:00
parent 2084e94099
commit 7a2d0a3bb2
13 changed files with 153 additions and 0 deletions
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idea/resources/inspectionDescriptions/RedundantRunCatching.html
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@@ -0,0 +1,6 @@
<html>
<body>
This inspection reports <b>runCatching</b> call that is immediately followed by <b>getOrThrow</b>.
Such a call can be replaced with just <b>run</b> call.
</body>
</html>
idea/src/META-INF/plugin.xml
+9
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@@ -3030,6 +3030,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.173
+9
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@@ -3028,6 +3028,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.181
+9
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@@ -3029,6 +3029,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.183
+9
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@@ -3030,6 +3030,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.as31
+9
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@@ -3028,6 +3028,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.as32
+9
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@@ -3028,6 +3028,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/META-INF/plugin.xml.as33
+9
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@@ -3030,6 +3030,15 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
language="kotlin"
/>
<localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection"
displayName="Redundant 'runCatching' call"
groupPath="Kotlin"
groupName="Style issues"
enabledByDefault="true"
level="WEAK WARNING"
language="kotlin"
/>
<referenceImporter implementation="org.jetbrains.kotlin.idea.quickfix.KotlinReferenceImporter"/>
<fileType.fileViewProviderFactory filetype="KJSM" implementationClass="com.intellij.psi.ClassFileViewProviderFactory"/>
idea/src/org/jetbrains/kotlin/idea/inspections/coroutines/RedundantRunCatchingInspection.kt
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@@ -0,0 +1,43 @@
/*
* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
* that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.idea.inspections.coroutines
import com.intellij.codeInspection.ProblemHighlightType
import com.intellij.codeInspection.ProblemsHolder
import org.jetbrains.kotlin.idea.inspections.collections.AbstractCallChainChecker
import org.jetbrains.kotlin.idea.inspections.collections.SimplifyCallChainFix
import org.jetbrains.kotlin.psi.psiUtil.startOffset
import org.jetbrains.kotlin.psi.qualifiedExpressionVisitor
class RedundantRunCatchingInspection : AbstractCallChainChecker() {
override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean) =
qualifiedExpressionVisitor(fun(expression) {
val conversion = findQualifiedConversion(expression, conversionGroups) { _, _, _, _ -> true } ?: return
val replacement = conversion.replacement
val descriptor = holder.manager.createProblemDescriptor(
expression,
expression.firstCalleeExpression()!!.textRange.shiftRight(-expression.startOffset),
"Redundant 'runCatching' call may be reduced to '$replacement'",
ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
isOnTheFly,
SimplifyCallChainFix(replacement)
)
holder.registerProblem(descriptor)
})
private val conversionGroups = conversions.group()
companion object {
private val conversions = listOf(
Conversion(
"kotlin.runCatching",
"kotlin.SuccessOrFailure.getOrThrow",
"run"
)
)
}
}
idea/testData/inspectionsLocal/coroutines/redundantRunCatching/.inspection
Vendored
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@@ -0,0 +1 @@
org.jetbrains.kotlin.idea.inspections.coroutines.RedundantRunCatchingInspection
idea/testData/inspectionsLocal/coroutines/redundantRunCatching/simple.kt
Vendored
+11
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@@ -0,0 +1,11 @@
// WITH_RUNTIME
package kotlin
class SuccessOrFailure<T>(val value: T?) {
fun getOrThrow(): T = value ?: throw AssertionError("")
}
fun <T> runCatching(block: () -> T) = SuccessOrFailure(block())
fun correct(arg: Boolean) = runCatching<caret> { if (arg) throw AssertionError("") else 12 }.getOrThrow()
idea/testData/inspectionsLocal/coroutines/redundantRunCatching/simple.kt.after
Vendored
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@@ -0,0 +1,11 @@
// WITH_RUNTIME
package kotlin
class SuccessOrFailure<T>(val value: T?) {
fun getOrThrow(): T = value ?: throw AssertionError("")
}
fun <T> runCatching(block: () -> T) = SuccessOrFailure(block())
fun correct(arg: Boolean) = run { if (arg) throw AssertionError("") else 12 }
idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java
Generated
+18
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@@ -1865,6 +1865,24 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
}
}
@TestMetadata("idea/testData/inspectionsLocal/coroutines/redundantRunCatching")
@TestDataPath("$PROJECT_ROOT")
@RunWith(JUnit3RunnerWithInners.class)
public static class RedundantRunCatching extends AbstractLocalInspectionTest {
private void runTest(String testDataFilePath) throws Exception {
KotlinTestUtils.runTest(this::doTest, TargetBackend.ANY, testDataFilePath);
}
public void testAllFilesPresentInRedundantRunCatching() throws Exception {
KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/inspectionsLocal/coroutines/redundantRunCatching"), Pattern.compile("^([\\w\\-_]+)\\.(kt|kts)$"), TargetBackend.ANY, true);
}
@TestMetadata("simple.kt")
public void testSimple() throws Exception {
runTest("idea/testData/inspectionsLocal/coroutines/redundantRunCatching/simple.kt");
}
}
@TestMetadata("idea/testData/inspectionsLocal/coroutines/resultIsSuccessOrFailure")
@TestDataPath("$PROJECT_ROOT")
@RunWith(JUnit3RunnerWithInners.class)