Rename: Forbid rename of synthetic declaration references

#KT-20241 Fixed

idea/src/META-INF/plugin.xml

@@ -2781,6 +2781,7 @@
     <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.RenameClassByCompanionObjectShortReferenceHandler"/>
     <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.RenameByLabeledReferenceInLambdaArgumentHandler"/>
     <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.RenameImportAliasByReferenceHandler"/>
+    <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.RenameSyntheticDeclarationByReferenceHandler"/>
     <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.KotlinMemberInplaceRenameHandler"/>
     <renameHandler implementation="org.jetbrains.kotlin.idea.refactoring.rename.KotlinVariableInplaceRenameHandler"/>
 

idea/src/org/jetbrains/kotlin/idea/refactoring/rename/RenameSyntheticDeclarationByReferenceHandler.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2018 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.refactoring.rename
+
+import com.intellij.openapi.actionSystem.CommonDataKeys
+import com.intellij.openapi.actionSystem.DataContext
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.refactoring.rename.RenameHandler
+import org.jetbrains.kotlin.idea.caches.resolve.resolveToCall
+import org.jetbrains.kotlin.idea.codeInsight.CodeInsightUtils
+import org.jetbrains.kotlin.psi.KtSimpleNameExpression
+import org.jetbrains.kotlin.resolve.calls.tower.isSynthesized
+
+class RenameSyntheticDeclarationByReferenceHandler : RenameHandler {
+    override fun isAvailableOnDataContext(dataContext: DataContext?): Boolean {
+        if (dataContext == null) return false
+        val file = CommonDataKeys.PSI_FILE.getData(dataContext) ?: return false
+        val editor = CommonDataKeys.EDITOR.getData(dataContext) ?: return false
+        val refExpression = file.findElementForRename<KtSimpleNameExpression>(editor.caretModel.offset) ?: return false
+        return (refExpression.resolveToCall()?.resultingDescriptor)?.isSynthesized ?: false
+    }
+
+    override fun isRenaming(dataContext: DataContext?) = isAvailableOnDataContext(dataContext)
+
+    override fun invoke(project: Project, editor: Editor, file: PsiFile, dataContext: DataContext?) {
+        CodeInsightUtils.showErrorHint(project, editor, "Rename is not applicable to synthetic declaration", "Rename", null)
+    }
+
+    override fun invoke(project: Project, elements: Array<out PsiElement>, dataContext: DataContext?) {
+        // Do nothing: this method is not called from editor
+    }
+}

idea/testData/refactoring/rename/dataClassComponentN/after/test.kt

@@ -0,0 +1,5 @@
+data class XYZ(val x: Int, val y: Int, val z: Int)
+
+fun test() {
+    val y = XYZ(1, 2, 3)./*rename*/component2()
+}

idea/testData/refactoring/rename/dataClassComponentN/before/test.kt

@@ -0,0 +1,5 @@
+data class XYZ(val x: Int, val y: Int, val z: Int)
+
+fun test() {
+    val y = XYZ(1, 2, 3)./*rename*/component2()
+}

idea/testData/refactoring/rename/dataClassComponentN/dataClassComponentN.test

@@ -0,0 +1,7 @@
+{
+  "type": "AUTO_DETECT",
+  "mainFile": "test.kt",
+  "newName": "component123",
+  "withRuntime": "true",
+  "hint": "Rename is not applicable to synthetic declaration"
+}

idea/testData/refactoring/rename/dataClassCopy/after/test.kt

@@ -0,0 +1,5 @@
+data class XYZ(val x: Int, val y: Int, val z: Int)
+
+fun test() {
+    XYZ(1, 2, 3)./*rename*/copy(x = 10)
+}

idea/testData/refactoring/rename/dataClassCopy/before/test.kt

@@ -0,0 +1,5 @@
+data class XYZ(val x: Int, val y: Int, val z: Int)
+
+fun test() {
+    XYZ(1, 2, 3)./*rename*/copy(x = 10)
+}

idea/testData/refactoring/rename/dataClassCopy/dataClassCopy.test

@@ -0,0 +1,7 @@
+{
+  "type": "AUTO_DETECT",
+  "mainFile": "test.kt",
+  "newName": "copyNew",
+  "withRuntime": "true",
+  "hint": "Rename is not applicable to synthetic declaration"
+}

idea/testData/refactoring/rename/enumValueOf/after/test.kt

@@ -0,0 +1,2 @@
+enum class Foo{BAR, BAZ}
+val bar = Foo./*rename*/valueOf("BAR")

idea/testData/refactoring/rename/enumValueOf/before/test.kt

@@ -0,0 +1,2 @@
+enum class Foo{BAR, BAZ}
+val bar = Foo./*rename*/valueOf("BAR")

idea/testData/refactoring/rename/enumValueOf/enumValueOf.test

@@ -0,0 +1,7 @@
+{
+  "type": "AUTO_DETECT",
+  "mainFile": "test.kt",
+  "newName": "valueOfNew",
+  "withRuntime": "true",
+  "hint": "Rename is not applicable to synthetic declaration"
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/rename/RenameTestGenerated.java

@@ -205,6 +205,24 @@ public class RenameTestGenerated extends AbstractRenameTest {
         doTest(fileName);
     }
 
+    @TestMetadata("dataClassComponentN/dataClassComponentN.test")
+    public void testDataClassComponentN_DataClassComponentN() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/dataClassComponentN/dataClassComponentN.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("dataClassCopy/dataClassCopy.test")
+    public void testDataClassCopy_DataClassCopy() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/dataClassCopy/dataClassCopy.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("enumValueOf/enumValueOf.test")
+    public void testEnumValueOf_EnumValueOf() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/enumValueOf/enumValueOf.test");
+        doTest(fileName);
+    }
+
     @TestMetadata("funTextOccurrences/funTextOccurrences.test")
     public void testFunTextOccurrences_FunTextOccurrences() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/funTextOccurrences/funTextOccurrences.test");