Clean up move refactoring

idea/src/org/jetbrains/kotlin/idea/intentions/MoveMemberOutOfObjectIntention.kt

@@ -49,10 +49,10 @@ abstract class MoveMemberOutOfObjectIntention(text: String) : SelfTargetingRange
 
         if (element is KtClassOrObject) {
             val moveDescriptor = MoveDeclarationsDescriptor(
-                    project,
-                    MoveSource(element),
-                    KotlinMoveTargetForExistingElement(destination),
-                    MoveDeclarationsDelegate.NestedClass()
+                project,
+                MoveSource(element),
+                KotlinMoveTargetForExistingElement(destination),
+                MoveDeclarationsDelegate.NestedClass()
             )
             object : CompositeRefactoringRunner(project, MoveKotlinDeclarationsProcessor.REFACTORING_ID) {
                 override fun runRefactoring() = MoveKotlinDeclarationsProcessor(moveDescriptor).run()

idea/src/org/jetbrains/kotlin/idea/refactoring/move/AutocreatingPsiDirectoryWrapper.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move
@@ -28,7 +17,7 @@ sealed class AutocreatingPsiDirectoryWrapper {
 
     class ByMoveDestination(private val moveDestination: MoveDestination) : AutocreatingPsiDirectoryWrapper() {
         override fun getPackageName() = moveDestination.targetPackage.qualifiedName
-        override fun getOrCreateDirectory(source: PsiDirectory) = moveDestination.getTargetDirectory(source)
+        override fun getOrCreateDirectory(source: PsiDirectory): PsiDirectory = moveDestination.getTargetDirectory(source)
     }
 
     abstract fun getPackageName(): String

idea/src/org/jetbrains/kotlin/idea/refactoring/move/MoveJavaInnerClassKotlinUsagesHandler.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move
@@ -26,7 +15,7 @@ import org.jetbrains.kotlin.psi.KtPsiFactory
 import org.jetbrains.kotlin.psi.KtValueArgumentList
 import org.jetbrains.kotlin.psi.psiUtil.getQualifiedExpressionForSelector
 
-class MoveJavaInnerClassKotlinUsagesHandler: MoveInnerClassUsagesHandler {
+class MoveJavaInnerClassKotlinUsagesHandler : MoveInnerClassUsagesHandler {
     override fun correctInnerClassUsage(usage: UsageInfo, outerClass: PsiClass) {
         val innerCall = usage.element?.parent as? KtCallExpression ?: return
         val receiverExpression = innerCall.getQualifiedExpressionForSelector()?.receiverExpression
@@ -35,13 +24,12 @@ class MoveJavaInnerClassKotlinUsagesHandler: MoveInnerClassUsagesHandler {
 
         val argumentToAdd = psiFactory.createArgument(receiverExpression ?: psiFactory.createExpression("this"))
 
-        val argumentList =
-                innerCall.valueArgumentList
-                ?: (innerCall.lambdaArguments.firstOrNull()?.let { lambdaArg ->
-                    val anchor = PsiTreeUtil.skipSiblingsBackward(lambdaArg, PsiWhiteSpace::class.java)
-                    innerCall.addAfter(psiFactory.createCallArguments("()"), anchor)
-                } as KtValueArgumentList?)
-                ?: return
+        val argumentList = innerCall.valueArgumentList
+            ?: (innerCall.lambdaArguments.firstOrNull()?.let { lambdaArg ->
+                val anchor = PsiTreeUtil.skipSiblingsBackward(lambdaArg, PsiWhiteSpace::class.java)
+                innerCall.addAfter(psiFactory.createCallArguments("()"), anchor)
+            } as KtValueArgumentList?)
+            ?: return
 
         argumentList.addArgumentAfter(argumentToAdd, null)
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveClassesOrPackages/KotlinAwareMoveClassesOrPackagesToNewDirectoryDialog.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveClassesOrPackages
@@ -24,9 +13,9 @@ import com.intellij.refactoring.move.MoveCallback
 import com.intellij.refactoring.move.moveClassesOrPackages.MoveClassesOrPackagesToNewDirectoryDialog
 
 class KotlinAwareMoveClassesOrPackagesToNewDirectoryDialog(
-        directory: PsiDirectory,
-        elementsToMove: Array<out PsiElement>,
-        moveCallback: MoveCallback?
+    directory: PsiDirectory,
+    elementsToMove: Array<out PsiElement>,
+    moveCallback: MoveCallback?
 ) : MoveClassesOrPackagesToNewDirectoryDialog(directory, elementsToMove, moveCallback) {
     override fun createDestination(aPackage: PsiPackage, directory: PsiDirectory): MoveDestination? {
         val delegate = super.createDestination(aPackage, directory) ?: return null

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ExtractDeclarationFromCurrentFileIntention.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -45,8 +34,8 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.getSuperClassNotAny
 private const val TIMEOUT_FOR_IMPORT_OPTIMIZING_MS: Long = 700L
 
 class ExtractDeclarationFromCurrentFileIntention :
-        SelfTargetingRangeIntention<KtClassOrObject>(KtClassOrObject::class.java, "Extract declaration from current file"),
-        LowPriorityAction {
+    SelfTargetingRangeIntention<KtClassOrObject>(KtClassOrObject::class.java, "Extract declaration from current file"),
+    LowPriorityAction {
     override fun applicabilityRange(element: KtClassOrObject): TextRange? {
         if (element.name == null) return null
         if (element.parent !is KtFile) return null
@@ -89,17 +78,24 @@ class ExtractDeclarationFromCurrentFileIntention :
             // If automatic move is not possible, fall back to full-fledged Move Declarations refactoring
             ApplicationManager.getApplication().invokeLater {
                 MoveKotlinTopLevelDeclarationsDialog(
-                        project,
-                        setOf(element),
-                        packageName.asString(),
-                        directory,
-                        targetFile as? KtFile,
-                        true,
-                        true,
-                        true,
-                        MoveCallback {
-                            runBlocking { withTimeoutOrNull(TIMEOUT_FOR_IMPORT_OPTIMIZING_MS) { OptimizeImportsProcessor(project, file).run() } }
+                    project,
+                    setOf(element),
+                    packageName.asString(),
+                    directory,
+                    targetFile as? KtFile,
+                    true,
+                    true,
+                    true,
+                    MoveCallback {
+                        runBlocking {
+                            withTimeoutOrNull(TIMEOUT_FOR_IMPORT_OPTIMIZING_MS) {
+                                OptimizeImportsProcessor(
+                                    project,
+                                    file
+                                ).run()
+                            }
                         }
+                    }
                 ).show()
             }
             return
@@ -108,19 +104,19 @@ class ExtractDeclarationFromCurrentFileIntention :
             createKotlinFile(targetFileName, directory, packageName.asString())
         }
         val descriptor = MoveDeclarationsDescriptor(
-                project = project,
-                moveSource = MoveSource(element),
-                moveTarget = moveTarget,
-                delegate = MoveDeclarationsDelegate.TopLevel,
-                searchInCommentsAndStrings = false,
-                searchInNonCode = false,
-                moveCallback = MoveCallback {
-                    val newFile = directory.findFile(targetFileName) as KtFile
-                    val newDeclaration = newFile.declarations.first()
-                    NavigationUtil.activateFileWithPsiElement(newFile)
-                    FileEditorManager.getInstance(project).selectedTextEditor?.moveCaret(newDeclaration.startOffset + originalOffset)
-                    runBlocking { withTimeoutOrNull(TIMEOUT_FOR_IMPORT_OPTIMIZING_MS) { OptimizeImportsProcessor(project, file).run() } }
-                }
+            project = project,
+            moveSource = MoveSource(element),
+            moveTarget = moveTarget,
+            delegate = MoveDeclarationsDelegate.TopLevel,
+            searchInCommentsAndStrings = false,
+            searchInNonCode = false,
+            moveCallback = MoveCallback {
+                val newFile = directory.findFile(targetFileName) as KtFile
+                val newDeclaration = newFile.declarations.first()
+                NavigationUtil.activateFileWithPsiElement(newFile)
+                FileEditorManager.getInstance(project).selectedTextEditor?.moveCaret(newDeclaration.startOffset + originalOffset)
+                runBlocking { withTimeoutOrNull(TIMEOUT_FOR_IMPORT_OPTIMIZING_MS) { OptimizeImportsProcessor(project, file).run() } }
+            }
         )
 
         MoveKotlinDeclarationsProcessor(descriptor).run()

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/KotlinAwareMoveFilesOrDirectoriesProcessor.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -32,49 +21,40 @@ import org.jetbrains.kotlin.idea.refactoring.move.moveFilesOrDirectories.allElem
 import org.jetbrains.kotlin.idea.refactoring.move.moveFilesOrDirectories.shouldFixFqName
 import org.jetbrains.kotlin.psi.KtFile
 
-class KotlinAwareMoveFilesOrDirectoriesProcessor @JvmOverloads constructor (
-        project: Project,
-        private val elementsToMove: List<PsiElement>,
-        private val targetDirectory: PsiDirectory,
-        private val searchReferences: Boolean,
-        searchInComments: Boolean,
-        searchInNonJavaFiles: Boolean,
-        moveCallback: MoveCallback?,
-        prepareSuccessfulCallback: Runnable = EmptyRunnable.INSTANCE
-) : MoveFilesOrDirectoriesProcessor(project,
-                                    elementsToMove.toTypedArray<PsiElement>(),
-                                    targetDirectory,
-                                    true,
-                                    searchInComments,
-                                    searchInNonJavaFiles,
-                                    moveCallback,
-                                    prepareSuccessfulCallback) {
+class KotlinAwareMoveFilesOrDirectoriesProcessor @JvmOverloads constructor(
+    project: Project,
+    private val elementsToMove: List<PsiElement>,
+    private val targetDirectory: PsiDirectory,
+    private val searchReferences: Boolean,
+    searchInComments: Boolean,
+    searchInNonJavaFiles: Boolean,
+    moveCallback: MoveCallback?,
+    prepareSuccessfulCallback: Runnable = EmptyRunnable.INSTANCE
+) : MoveFilesOrDirectoriesProcessor(
+    project,
+    elementsToMove.toTypedArray(),
+    targetDirectory,
+    true,
+    searchInComments,
+    searchInNonJavaFiles,
+    moveCallback,
+    prepareSuccessfulCallback
+) {
     override fun createUsageViewDescriptor(usages: Array<out UsageInfo>): UsageViewDescriptor {
-        return MoveFilesWithDeclarationsViewDescriptor(elementsToMove.toTypedArray<PsiElement>(), targetDirectory)
+        return MoveFilesWithDeclarationsViewDescriptor(elementsToMove.toTypedArray(), targetDirectory)
     }
 
     override fun findUsages(): Array<UsageInfo> {
         try {
             markScopeToMove(elementsToMove)
             return if (searchReferences) super.findUsages() else UsageInfo.EMPTY_ARRAY
-        }
-        finally {
+        } finally {
             markScopeToMove(null)
         }
     }
 
     override fun preprocessUsages(refUsages: Ref<Array<UsageInfo>>): Boolean {
-        val usages = refUsages.get()
-
-        val (conflictUsages, usagesToProcess) = usages.partition { it is ConflictUsageInfo }
-
-        val conflicts = MultiMap<PsiElement, String>()
-        for (conflictUsage in conflictUsages) {
-            conflicts.putValues(conflictUsage.element, (conflictUsage as ConflictUsageInfo).messages)
-        }
-
-        refUsages.set(usagesToProcess.toTypedArray())
-
+        val (conflicts, usages) = MoveToKotlinFileProcessor.preprocessConflictUsages(refUsages)
         return showConflicts(conflicts, usages)
     }
 
@@ -101,8 +81,7 @@ class KotlinAwareMoveFilesOrDirectoriesProcessor @JvmOverloads constructor (
         try {
             markShouldFixFqName(true)
             super.performRefactoring(usages)
-        }
-        finally {
+        } finally {
             markShouldFixFqName(false)
         }
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/KotlinMoveTarget.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -52,16 +41,16 @@ interface KotlinDirectoryBasedMoveTarget : KotlinMoveTarget {
         get() = super.targetScope ?: directory?.virtualFile
 }
 
-object EmptyKotlinMoveTarget: KotlinMoveTarget {
-    override val targetContainerFqName = null
-    override val targetFile = null
+object EmptyKotlinMoveTarget : KotlinMoveTarget {
+    override val targetContainerFqName: FqName? = null
+    override val targetFile: VirtualFile? = null
 
-    override fun getOrCreateTargetPsi(originalPsi: PsiElement) = null
-    override fun getTargetPsiIfExists(originalPsi: PsiElement) = null
-    override fun verify(file: PsiFile) = null
+    override fun getOrCreateTargetPsi(originalPsi: PsiElement): KtElement? = null
+    override fun getTargetPsiIfExists(originalPsi: PsiElement): KtElement? = null
+    override fun verify(file: PsiFile): String? = null
 }
 
-class KotlinMoveTargetForExistingElement(val targetElement: KtElement): KotlinMoveTarget {
+class KotlinMoveTargetForExistingElement(val targetElement: KtElement) : KotlinMoveTarget {
     override val targetContainerFqName = targetElement.containingKtFile.packageFqName
 
     override val targetFile: VirtualFile? = targetElement.containingKtFile.virtualFile
@@ -74,9 +63,9 @@ class KotlinMoveTargetForExistingElement(val targetElement: KtElement): KotlinMo
     override fun verify(file: PsiFile): String? = null
 }
 
-class KotlinMoveTargetForCompanion(val targetClass: KtClass): KotlinMoveTarget {
+class KotlinMoveTargetForCompanion(val targetClass: KtClass) : KotlinMoveTarget {
     override val targetContainerFqName = targetClass.companionObjects.firstOrNull()?.fqName
-                                         ?: targetClass.fqName!!.child(SpecialNames.DEFAULT_NAME_FOR_COMPANION_OBJECT)
+        ?: targetClass.fqName!!.child(SpecialNames.DEFAULT_NAME_FOR_COMPANION_OBJECT)
 
     override val targetFile: VirtualFile? = targetClass.containingKtFile.virtualFile
 
@@ -89,11 +78,11 @@ class KotlinMoveTargetForCompanion(val targetClass: KtClass): KotlinMoveTarget {
 }
 
 class KotlinMoveTargetForDeferredFile(
-        override val targetContainerFqName: FqName,
-        override val directory: PsiDirectory?,
-        override val targetFile: VirtualFile? = directory?.virtualFile,
-        private val createFile: (KtFile) -> KtFile?
-): KotlinDirectoryBasedMoveTarget {
+    override val targetContainerFqName: FqName,
+    override val directory: PsiDirectory?,
+    override val targetFile: VirtualFile? = directory?.virtualFile,
+    private val createFile: (KtFile) -> KtFile?
+) : KotlinDirectoryBasedMoveTarget {
     private val createdFiles = HashMap<KtFile, KtFile?>()
 
     override fun getOrCreateTargetPsi(originalPsi: PsiElement): KtElement? {
@@ -101,23 +90,23 @@ class KotlinMoveTargetForDeferredFile(
         return createdFiles.getOrPutNullable(originalFile) { createFile(originalFile) }
     }
 
-    override fun getTargetPsiIfExists(originalPsi: PsiElement) = null
+    override fun getTargetPsiIfExists(originalPsi: PsiElement): KtElement? = null
 
     // No additional verification is needed
     override fun verify(file: PsiFile): String? = null
 }
 
 class KotlinDirectoryMoveTarget(
-        override val targetContainerFqName: FqName,
-        override val directory: PsiDirectory
+    override val targetContainerFqName: FqName,
+    override val directory: PsiDirectory
 ) : KotlinDirectoryBasedMoveTarget {
     override val targetFile: VirtualFile? = directory.virtualFile
 
     override fun getOrCreateTargetPsi(originalPsi: PsiElement) = originalPsi.containingFile as? KtFile
 
-    override fun getTargetPsiIfExists(originalPsi: PsiElement) = null
+    override fun getTargetPsiIfExists(originalPsi: PsiElement): KtElement? = null
 
-    override fun verify(file: PsiFile) = null
+    override fun verify(file: PsiFile): String? = null
 }
 
 fun KotlinMoveTarget.getTargetModule(project: Project) = targetScope?.getModule(project)

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/MoveDeclarationsDelegate.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -39,9 +28,9 @@ sealed class MoveDeclarationsDelegate {
     open fun findInternalUsages(descriptor: MoveDeclarationsDescriptor): List<UsageInfo> = emptyList()
 
     open fun collectConflicts(
-            descriptor: MoveDeclarationsDescriptor,
-            internalUsages: MutableSet<UsageInfo>,
-            conflicts: MultiMap<PsiElement, String>
+        descriptor: MoveDeclarationsDescriptor,
+        internalUsages: MutableSet<UsageInfo>,
+        conflicts: MultiMap<PsiElement, String>
     ) {
 
     }
@@ -63,8 +52,8 @@ sealed class MoveDeclarationsDelegate {
     }
 
     class NestedClass(
-            val newClassName: String? = null,
-            val outerInstanceParameterName: String? = null
+        val newClassName: String? = null,
+        val outerInstanceParameterName: String? = null
     ) : MoveDeclarationsDelegate() {
         override fun getContainerChangeInfo(originalDeclaration: KtNamedDeclaration, moveTarget: KotlinMoveTarget): ContainerChangeInfo {
             val originalInfo = ContainerInfo.Class(originalDeclaration.containingClassOrObject!!.fqName!!)
@@ -84,11 +73,10 @@ sealed class MoveDeclarationsDelegate {
         }
 
         private fun isValidTargetForImplicitCompanionAsDispatchReceiver(
-                moveDescriptor: MoveDeclarationsDescriptor,
-                companionDescriptor: ClassDescriptor
+            moveDescriptor: MoveDeclarationsDescriptor,
+            companionDescriptor: ClassDescriptor
         ): Boolean {
-            val moveTarget = moveDescriptor.moveTarget
-            return when (moveTarget) {
+            return when (val moveTarget = moveDescriptor.moveTarget) {
                 is KotlinMoveTargetForCompanion -> true
                 is KotlinMoveTargetForExistingElement -> {
                     val targetClass = moveTarget.targetElement as? KtClassOrObject ?: return false
@@ -101,9 +89,9 @@ sealed class MoveDeclarationsDelegate {
         }
 
         override fun collectConflicts(
-                descriptor: MoveDeclarationsDescriptor,
-                internalUsages: MutableSet<UsageInfo>,
-                conflicts: MultiMap<PsiElement, String>
+            descriptor: MoveDeclarationsDescriptor,
+            internalUsages: MutableSet<UsageInfo>,
+            conflicts: MultiMap<PsiElement, String>
         ) {
             val usageIterator = internalUsages.iterator()
             while (usageIterator.hasNext()) {
@@ -141,7 +129,7 @@ sealed class MoveDeclarationsDelegate {
                     if (outerInstanceParameterName != null) {
                         val type = (containingClassOrObject!!.unsafeResolveToDescriptor() as ClassDescriptor).defaultType
                         val parameter = KtPsiFactory(project)
-                                .createParameter("private val $outerInstanceParameterName: ${IdeDescriptorRenderers.SOURCE_CODE.renderType(type)}")
+                            .createParameter("private val $outerInstanceParameterName: ${IdeDescriptorRenderers.SOURCE_CODE.renderType(type)}")
                         createPrimaryConstructorParameterListIfAbsent().addParameter(parameter).isToBeShortened = true
                     }
                 }
@@ -162,8 +150,8 @@ sealed class MoveDeclarationsDelegate {
                         val lightOuterClass = outerClass?.toLightClass()
                         if (lightOuterClass != null) {
                             MoveInnerClassUsagesHandler.EP_NAME
-                                    .forLanguage(usage.element!!.language)
-                                    ?.correctInnerClassUsage(usage, lightOuterClass, outerInstanceParameterName)
+                                .forLanguage(usage.element!!.language)
+                                ?.correctInnerClassUsage(usage, lightOuterClass, outerInstanceParameterName)
                         }
                     }
                 }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/MoveFilesWithDeclarationsViewDescriptor.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -25,21 +14,24 @@ import com.intellij.usageView.UsageViewDescriptor
 import com.intellij.usageView.UsageViewUtil
 
 internal class MoveFilesWithDeclarationsViewDescriptor(
-        private val myElementsToMove: Array<PsiElement>,
-        newParent: PsiDirectory
+    private val myElementsToMove: Array<PsiElement>,
+    newParent: PsiDirectory
 ) : UsageViewDescriptor {
     private var myProcessedElementsHeader: String? = null
     private val myCodeReferencesText: String
 
     init {
         if (myElementsToMove.size == 1) {
-            myProcessedElementsHeader = RefactoringBundle.message("move.single.element.elements.header",
-                                                                  UsageViewUtil.getType(myElementsToMove[0]),
-                                                                  newParent.virtualFile.presentableUrl).capitalize()
-            myCodeReferencesText = "References in code to ${UsageViewUtil.getType(myElementsToMove[0])} ${UsageViewUtil.getLongName(myElementsToMove[0])} and its declarations"
-        }
-        else {
-            myProcessedElementsHeader = StringUtil.capitalize(RefactoringBundle.message("move.files.elements.header", newParent.virtualFile.presentableUrl))
+            myProcessedElementsHeader = RefactoringBundle.message(
+                "move.single.element.elements.header",
+                UsageViewUtil.getType(myElementsToMove[0]),
+                newParent.virtualFile.presentableUrl
+            ).capitalize()
+            myCodeReferencesText =
+                "References in code to ${UsageViewUtil.getType(myElementsToMove[0])} ${UsageViewUtil.getLongName(myElementsToMove[0])} and its declarations"
+        } else {
+            myProcessedElementsHeader =
+                StringUtil.capitalize(RefactoringBundle.message("move.files.elements.header", newParent.virtualFile.presentableUrl))
             myCodeReferencesText = RefactoringBundle.message("references.found.in.code")
         }
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/MoveKotlinDeclarationsProcessor.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -153,10 +142,13 @@ class MoveKotlinDeclarationsProcessor(
 
     private var nonCodeUsages: Array<NonCodeUsageInfo>? = null
     private val moveEntireFile = descriptor.moveSource is MoveSource.File
-    private val elementsToMove = descriptor.moveSource.elementsToMove.filter { e -> e.parent != descriptor.moveTarget.getTargetPsiIfExists(e) }
+    private val elementsToMove = descriptor.moveSource.elementsToMove.filter { e ->
+        e.parent != descriptor.moveTarget.getTargetPsiIfExists(e)
+    }
+
     private val kotlinToLightElementsBySourceFile = elementsToMove
         .groupBy { it.containingKtFile }
-        .mapValues { it.value.keysToMap { it.toLightElements().ifEmpty { listOf(it) } } }
+        .mapValues { it.value.keysToMap { declaration -> declaration.toLightElements().ifEmpty { listOf(declaration) } } }
     private val conflicts = MultiMap<PsiElement, String>()
 
     override fun getRefactoringId() = REFACTORING_ID
@@ -209,10 +201,9 @@ class MoveKotlinDeclarationsProcessor(
                 val results = ReferencesSearch
                     .search(lightElement, searchScope)
                     .mapNotNullTo(ArrayList()) { ref ->
-                        if (foundReferences.add(ref) && elementsToMove.none { it.isAncestor(ref.element)}) {
+                        if (foundReferences.add(ref) && elementsToMove.none { it.isAncestor(ref.element) }) {
                             createMoveUsageInfoIfPossible(ref, lightElement, addImportToOriginalFile = true, isInternal = false)
-                        }
-                        else null
+                        } else null
                     }
 
                 val name = lightElement.getKotlinFqName()?.quoteIfNeeded()?.asString()

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/MoveToKotlinFileProcessor.kt

@@ -29,23 +29,25 @@ import com.intellij.util.containers.MultiMap
 import com.intellij.util.text.UniqueNameGenerator
 import org.jetbrains.kotlin.psi.KtFile
 
-class MoveToKotlinFileProcessor @JvmOverloads constructor (
-        project: Project,
-        private val sourceFile: KtFile,
-        private val targetDirectory: PsiDirectory,
-        private val targetFileName: String,
-        searchInComments: Boolean,
-        searchInNonJavaFiles: Boolean,
-        moveCallback: MoveCallback?,
-        prepareSuccessfulCallback: Runnable = EmptyRunnable.INSTANCE
-) : MoveFilesOrDirectoriesProcessor(project,
-                                    arrayOf(sourceFile),
-                                    targetDirectory,
-                                    true,
-                                    searchInComments,
-                                    searchInNonJavaFiles,
-                                    moveCallback,
-                                    prepareSuccessfulCallback) {
+class MoveToKotlinFileProcessor @JvmOverloads constructor(
+    project: Project,
+    private val sourceFile: KtFile,
+    private val targetDirectory: PsiDirectory,
+    private val targetFileName: String,
+    searchInComments: Boolean,
+    searchInNonJavaFiles: Boolean,
+    moveCallback: MoveCallback?,
+    prepareSuccessfulCallback: Runnable = EmptyRunnable.INSTANCE
+) : MoveFilesOrDirectoriesProcessor(
+    project,
+    arrayOf(sourceFile),
+    targetDirectory,
+    true,
+    searchInComments,
+    searchInNonJavaFiles,
+    moveCallback,
+    prepareSuccessfulCallback
+) {
     override fun getCommandName() = "Move ${sourceFile.name}"
 
     override fun createUsageViewDescriptor(usages: Array<out UsageInfo>): UsageViewDescriptor {
@@ -53,17 +55,7 @@ class MoveToKotlinFileProcessor @JvmOverloads constructor (
     }
 
     override fun preprocessUsages(refUsages: Ref<Array<UsageInfo>>): Boolean {
-        val usages = refUsages.get()
-
-        val (conflictUsages, usagesToProcess) = usages.partition { it is ConflictUsageInfo }
-
-        val conflicts = MultiMap<PsiElement, String>()
-        for (conflictUsage in conflictUsages) {
-            conflicts.putValues(conflictUsage.element, (conflictUsage as ConflictUsageInfo).messages)
-        }
-
-        refUsages.set(usagesToProcess.toTypedArray())
-
+        val (conflicts, usages) = preprocessConflictUsages(refUsages)
         return showConflicts(conflicts, usages)
     }
 
@@ -85,11 +77,29 @@ class MoveToKotlinFileProcessor @JvmOverloads constructor (
 
         try {
             super.performRefactoring(usages)
-        }
-        finally {
+        } finally {
             if (needTemporaryRename) {
                 sourceFile.name = targetFileName
             }
         }
     }
+
+    companion object {
+        data class ConflictUsages(val conflicts: MultiMap<PsiElement, String>, @Suppress("ArrayInDataClass") val usages: Array<UsageInfo>)
+
+        fun preprocessConflictUsages(refUsages: Ref<Array<UsageInfo>>): ConflictUsages {
+            val usages: Array<UsageInfo> = refUsages.get()
+
+            val (conflictUsages, usagesToProcess) = usages.partition { it is ConflictUsageInfo }
+
+            val conflicts = MultiMap<PsiElement, String>()
+            for (conflictUsage in conflictUsages) {
+                conflicts.putValues(conflictUsage.element, (conflictUsage as ConflictUsageInfo).messages)
+            }
+
+            refUsages.set(usagesToProcess.toTypedArray())
+
+            return ConflictUsages(conflicts, usages)
+        }
+    }
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/moveConflictUtils.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations
@@ -62,6 +51,7 @@ import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.load.java.JavaVisibilities
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.platform.jvm.isJvm
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.*
 import org.jetbrains.kotlin.renderer.ClassifierNamePolicy
@@ -73,7 +63,6 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameOrNull
 import org.jetbrains.kotlin.resolve.descriptorUtil.getImportableDescriptor
 import org.jetbrains.kotlin.resolve.descriptorUtil.getSuperClassNotAny
 import org.jetbrains.kotlin.resolve.descriptorUtil.isSubclassOf
-import org.jetbrains.kotlin.platform.jvm.isJvm
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 import org.jetbrains.kotlin.resolve.lazy.descriptors.findPackageFragmentForFile
 import org.jetbrains.kotlin.resolve.source.KotlinSourceElement
@@ -115,22 +104,19 @@ class MoveConflictChecker(
 
     private fun KotlinMoveTarget.getContainerDescriptor(): DeclarationDescriptor? {
         return when (this) {
-            is KotlinMoveTargetForExistingElement -> {
-                val targetElement = targetElement
-                when (targetElement) {
-                    is KtNamedDeclaration -> resolutionFacade.resolveToDescriptor(targetElement)
+            is KotlinMoveTargetForExistingElement -> when (val targetElement = targetElement) {
+                is KtNamedDeclaration -> resolutionFacade.resolveToDescriptor(targetElement)
 
-                    is KtFile -> {
-                        val packageFragment =
-                            targetElement
-                                .findModuleDescriptor()
-                                .findPackageFragmentForFile(targetElement)
+                is KtFile -> {
+                    val packageFragment =
+                        targetElement
+                            .findModuleDescriptor()
+                            .findPackageFragmentForFile(targetElement)
 
-                        packageFragment?.withSource(targetElement)
-                    }
-
-                    else -> null
+                    packageFragment?.withSource(targetElement)
                 }
+
+                else -> null
             }
 
             is KotlinDirectoryBasedMoveTarget -> {
@@ -159,8 +145,7 @@ class MoveConflictChecker(
     ): DeclarationDescriptor? {
         if (newContainer == null && newVisibility == null) return this
 
-        val wrappedDescriptor = this
-        return when (wrappedDescriptor) {
+        return when (val wrappedDescriptor = this) {
             // We rely on visibility not depending on more specific type of CallableMemberDescriptor
             is CallableMemberDescriptor -> object : CallableMemberDescriptor by wrappedDescriptor {
                 override fun getOriginal() = this
@@ -255,7 +240,7 @@ class MoveConflictChecker(
             val referencedElementsToSkip = newConflicts.keySet().mapNotNullTo(HashSet()) { it.namedUnwrappedElement }
             externalUsages.removeIf {
                 it is MoveRenameUsageInfo &&
-                        it.referencedElement?.namedUnwrappedElement?.let { it in referencedElementsToSkip } ?: false
+                        it.referencedElement?.namedUnwrappedElement?.let { element -> element in referencedElementsToSkip } ?: false
             }
             conflicts.putAllValues(newConflicts)
         }
@@ -318,20 +303,20 @@ class MoveConflictChecker(
             val renderedImportableTarget = DESCRIPTOR_RENDERER_FOR_COMPARISON.render(importableDescriptor)
             val renderedTarget by lazy { DESCRIPTOR_RENDERER_FOR_COMPARISON.render(targetDescriptor) }
 
-            return newTargetDescriptors.any {
-                if (DESCRIPTOR_RENDERER_FOR_COMPARISON.render(it) != renderedImportableTarget) return@any false
+            return newTargetDescriptors.any { descriptor ->
+                if (DESCRIPTOR_RENDERER_FOR_COMPARISON.render(descriptor) != renderedImportableTarget) return@any false
                 if (importableDescriptor == targetDescriptor) return@any true
 
                 val candidateDescriptors: Collection<DeclarationDescriptor> = when (targetDescriptor) {
                     is ConstructorDescriptor -> {
-                        (it as? ClassDescriptor)?.constructors ?: emptyList<DeclarationDescriptor>()
+                        (descriptor as? ClassDescriptor)?.constructors ?: emptyList()
                     }
 
                     is PropertyAccessorDescriptor -> {
-                        (it as? PropertyDescriptor)
+                        (descriptor as? PropertyDescriptor)
                             ?.let { if (targetDescriptor is PropertyGetterDescriptor) it.getter else it.setter }
                             ?.let { listOf(it) }
-                            ?: emptyList<DeclarationDescriptor>()
+                            ?: emptyList()
                     }
 
                     else -> emptyList()
@@ -375,7 +360,7 @@ class MoveConflictChecker(
                 referencesToSkip += refExpr
             }
         }
-        internalUsages.removeIf { it.reference?.element?.let { it in referencesToSkip } ?: false }
+        internalUsages.removeIf { it.reference?.element?.let { element -> element in referencesToSkip } ?: false }
     }
 
     fun checkVisibilityInUsages(usages: Collection<UsageInfo>, conflicts: MultiMap<PsiElement, String>) {
@@ -396,7 +381,7 @@ class MoveConflictChecker(
             ) continue
 
             val container = element.getUsageContext()
-            if (!declarationToContainers.getOrPut(referencedElement) { HashSet<PsiElement>() }.add(container)) continue
+            if (!declarationToContainers.getOrPut(referencedElement) { HashSet() }.add(container)) continue
 
             val targetContainer = moveTarget.getContainerDescriptor() ?: continue
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/KotlinAwareMoveFilesOrDirectoriesDialog.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -41,13 +41,13 @@ import java.io.File
 import javax.swing.JComponent
 
 class KotlinAwareMoveFilesOrDirectoriesDialog(
-        private val project: Project,
-        private val initialDirectory: PsiDirectory?,
-        private val callback: (KotlinAwareMoveFilesOrDirectoriesDialog?) -> Unit
+    private val project: Project,
+    private val initialDirectory: PsiDirectory?,
+    private val callback: (KotlinAwareMoveFilesOrDirectoriesDialog?) -> Unit
 ) : DialogWrapper(project, true) {
     companion object {
-        private val RECENT_KEYS = "MoveFile.RECENT_KEYS"
-        private val MOVE_FILES_OPEN_IN_EDITOR = "MoveFile.OpenInEditor"
+        private const val RECENT_KEYS = "MoveFile.RECENT_KEYS"
+        private const val MOVE_FILES_OPEN_IN_EDITOR = "MoveFile.OpenInEditor"
     }
 
     private val nameLabel = JBLabelDecorator.createJBLabelDecorator().setBold(true)
@@ -81,11 +81,13 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
         RecentsManager.getInstance(project).getRecentEntries(RECENT_KEYS)?.let { targetDirectoryField.childComponent.history = it }
 
         val descriptor = FileChooserDescriptorFactory.createSingleFolderDescriptor()
-        targetDirectoryField.addBrowseFolderListener(RefactoringBundle.message("select.target.directory"),
-                                                     RefactoringBundle.message("the.file.will.be.moved.to.this.directory"),
-                                                     project,
-                                                     descriptor,
-                                                     TextComponentAccessor.TEXT_FIELD_WITH_HISTORY_WHOLE_TEXT)
+        targetDirectoryField.addBrowseFolderListener(
+            RefactoringBundle.message("select.target.directory"),
+            RefactoringBundle.message("the.file.will.be.moved.to.this.directory"),
+            project,
+            descriptor,
+            TextComponentAccessor.TEXT_FIELD_WITH_HISTORY_WHOLE_TEXT
+        )
         val textField = targetDirectoryField.childComponent.textEditor
         FileChooserFactory.getInstance().installFileCompletion(textField, descriptor, true, disposable)
         textField.onTextChange { validateOKButton() }
@@ -96,13 +98,13 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
 
         val shortcutText = KeymapUtil.getFirstKeyboardShortcutText(ActionManager.getInstance().getAction(IdeActions.ACTION_CODE_COMPLETION))
         return FormBuilder.createFormBuilder()
-                .addComponent(nameLabel)
-                .addLabeledComponent(RefactoringBundle.message("move.files.to.directory.label"), targetDirectoryField, UIUtil.LARGE_VGAP)
-                .addTooltip(RefactoringBundle.message("path.completion.shortcut", shortcutText))
-                .addComponentToRightColumn(searchReferencesCb, UIUtil.LARGE_VGAP)
-                .addComponentToRightColumn(openInEditorCb, UIUtil.LARGE_VGAP)
-                .addComponentToRightColumn(updatePackageDirectiveCb, UIUtil.LARGE_VGAP)
-                .panel
+            .addComponent(nameLabel)
+            .addLabeledComponent(RefactoringBundle.message("move.files.to.directory.label"), targetDirectoryField, UIUtil.LARGE_VGAP)
+            .addTooltip(RefactoringBundle.message("path.completion.shortcut", shortcutText))
+            .addComponentToRightColumn(searchReferencesCb, UIUtil.LARGE_VGAP)
+            .addComponentToRightColumn(openInEditorCb, UIUtil.LARGE_VGAP)
+            .addComponentToRightColumn(updatePackageDirectiveCb, UIUtil.LARGE_VGAP)
+            .panel
     }
 
     fun setData(psiElements: Array<out PsiElement>, initialTargetDirectory: PsiDirectory?, helpID: String) {
@@ -113,8 +115,7 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
                 is PsiFile -> RefactoringBundle.message("move.file.0", shortenedPath)
                 else -> RefactoringBundle.message("move.directory.0", shortenedPath)
             }
-        }
-        else {
+        } else {
             val isFile = psiElements.all { it is PsiFile }
             val isDirectory = psiElements.all { it is PsiDirectory }
             nameLabel.text = when {
@@ -129,7 +130,7 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
         validateOKButton()
         this.helpID = helpID
 
-        with (updatePackageDirectiveCb) {
+        with(updatePackageDirectiveCb) {
             val jetFiles = psiElements.filterIsInstance<KtFile>().filter(KtFile::isInJavaSourceRoot)
             if (jetFiles.isEmpty()) {
                 parent.remove(updatePackageDirectiveCb)
@@ -150,7 +151,7 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
     }
 
     private fun validateOKButton() {
-        isOKActionEnabled = targetDirectoryField.childComponent.text.length > 0
+        isOKActionEnabled = targetDirectoryField.childComponent.text.isNotEmpty()
     }
 
     override fun doOKAction() {
@@ -172,17 +173,18 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
                 }
                 try {
                     targetDirectory = DirectoryUtil.mkdirs(PsiManager.getInstance(project), directoryName)
-                }
-                catch (e: IncorrectOperationException) {
+                } catch (e: IncorrectOperationException) {
                     // ignore
                 }
             }
 
             if (targetDirectory == null) {
-                CommonRefactoringUtil.showErrorMessage(title,
-                                                       RefactoringBundle.message("cannot.create.directory"),
-                                                       helpID,
-                                                       project)
+                CommonRefactoringUtil.showErrorMessage(
+                    title,
+                    RefactoringBundle.message("cannot.create.directory"),
+                    helpID,
+                    project
+                )
                 return@executeCommand
             }
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/KotlinSelectNestedClassRefactoringDialog.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations.ui
@@ -29,10 +18,10 @@ import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import java.awt.BorderLayout
 import javax.swing.*
 
-internal class KotlinSelectNestedClassRefactoringDialog private constructor (
-        project: Project,
-        private val nestedClass: KtClassOrObject,
-        private val targetContainer: PsiElement?
+internal class KotlinSelectNestedClassRefactoringDialog private constructor(
+    project: Project,
+    private val nestedClass: KtClassOrObject,
+    private val targetContainer: PsiElement?
 ) : DialogWrapper(project, true) {
     private val moveToUpperLevelButton = JRadioButton()
     private val moveMembersButton = JRadioButton()
@@ -83,32 +72,34 @@ internal class KotlinSelectNestedClassRefactoringDialog private constructor (
 
     companion object {
         private fun MoveKotlinNestedClassesToUpperLevelDialog(
-                nestedClass: KtClassOrObject,
-                targetContainer: PsiElement?
+            nestedClass: KtClassOrObject,
+            targetContainer: PsiElement?
         ): MoveKotlinNestedClassesToUpperLevelDialog? {
             val outerClass = nestedClass.containingClassOrObject ?: return null
             val newTarget = targetContainer
-                            ?: outerClass.containingClassOrObject
-                            ?: outerClass.containingFile.let { it.containingDirectory ?: it }
+                ?: outerClass.containingClassOrObject
+                ?: outerClass.containingFile.let { it.containingDirectory ?: it }
             return MoveKotlinNestedClassesToUpperLevelDialog(nestedClass.project, nestedClass, newTarget)
         }
 
         private fun MoveKotlinNestedClassesDialog(
-                nestedClass: KtClassOrObject,
-                targetContainer: PsiElement?
+            nestedClass: KtClassOrObject,
+            targetContainer: PsiElement?
         ): MoveKotlinNestedClassesDialog {
-            return MoveKotlinNestedClassesDialog(nestedClass.project,
-                                                 listOf(nestedClass),
-                                                 nestedClass.containingClassOrObject!!,
-                                                 targetContainer as? KtClassOrObject ?: nestedClass.containingClassOrObject!!,
-                                                 null)
+            return MoveKotlinNestedClassesDialog(
+                nestedClass.project,
+                listOf(nestedClass),
+                nestedClass.containingClassOrObject!!,
+                targetContainer as? KtClassOrObject ?: nestedClass.containingClassOrObject!!,
+                null
+            )
         }
 
         fun chooseNestedClassRefactoring(nestedClass: KtClassOrObject, targetContainer: PsiElement?) {
             val project = nestedClass.project
             val dialog = when {
                 targetContainer != null && targetContainer !is KtClassOrObject ||
-                nestedClass is KtClass && nestedClass.isInner() -> {
+                        nestedClass is KtClass && nestedClass.isInner() -> {
                     MoveKotlinNestedClassesToUpperLevelDialog(nestedClass, targetContainer)
                 }
                 nestedClass is KtEnumEntry -> return

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/MoveKotlinNestedClassesDialog.java

@@ -1,23 +1,10 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations.ui;
 
-import com.intellij.codeInsight.lookup.LookupElement;
-import com.intellij.ide.util.ClassFilter;
 import com.intellij.ide.util.TreeClassChooser;
 import com.intellij.ide.util.TreeJavaClassChooserDialog;
 import com.intellij.openapi.editor.event.DocumentEvent;
@@ -36,7 +23,6 @@ import com.intellij.refactoring.move.MoveCallback;
 import com.intellij.refactoring.move.MoveHandler;
 import com.intellij.refactoring.ui.RefactoringDialog;
 import kotlin.collections.CollectionsKt;
-import kotlin.jvm.functions.Function1;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.asJava.LightClassUtilsKt;
@@ -59,8 +45,7 @@ import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.util.List;
-
-import static org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.MoveKotlinDeclarationsProcessorKt.MoveSource;
+import java.util.Objects;
 
 public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
     private static final String RECENTS_KEY = MoveKotlinNestedClassesDialog.class.getName() + ".RECENTS_KEY";
@@ -74,6 +59,7 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
     private JPanel targetClassChooserPanel;
     private KotlinMemberSelectionTable memberTable;
     private PsiElement targetClass;
+
     public MoveKotlinNestedClassesDialog(
             @NotNull Project project,
             @NotNull List<KtClassOrObject> elementsToMove,
@@ -111,23 +97,20 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
                                 RefactoringBundle.message("choose.destination.class"),
                                 myProject,
                                 GlobalSearchScope.projectScope(myProject),
-                                new ClassFilter() {
-                                    @Override
-                                    public boolean isAccepted(PsiClass aClass) {
-                                        if (!(aClass instanceof KtLightClassForSourceDeclaration)) return false;
-                                        KtClassOrObject classOrObject = ((KtLightClassForSourceDeclaration) aClass).getKotlinOrigin();
+                                aClass -> {
+                                    if (!(aClass instanceof KtLightClassForSourceDeclaration)) return false;
+                                    KtClassOrObject classOrObject = ((KtLightClassForSourceDeclaration) aClass).getKotlinOrigin();
 
-                                        if (classOrObject instanceof KtObjectDeclaration) {
-                                            return !((KtObjectDeclaration) classOrObject).isObjectLiteral();
-                                        }
-
-                                        if (classOrObject instanceof KtClass) {
-                                            KtClass ktClass = (KtClass) classOrObject;
-                                            return !(ktClass.isInner() || ktClass.isAnnotation());
-                                        }
-
-                                        return false;
+                                    if (classOrObject instanceof KtObjectDeclaration) {
+                                        return !((KtObjectDeclaration) classOrObject).isObjectLiteral();
                                     }
+
+                                    if (classOrObject instanceof KtClass) {
+                                        KtClass ktClass = (KtClass) classOrObject;
+                                        return !(ktClass.isInner() || ktClass.isAnnotation());
+                                    }
+
+                                    return false;
                                 },
                                 null,
                                 null,
@@ -144,13 +127,14 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
                                 return LightClassUtilsKt.toLightClass(((KtClassOrObjectTreeNode) userObject).getValue());
                             }
                         };
-                        chooser.selectDirectory((targetClass != null ? targetClass : originalClass).getContainingFile().getContainingDirectory());
+                        chooser.selectDirectory(
+                                (targetClass != null ? targetClass : originalClass).getContainingFile().getContainingDirectory());
                         chooser.showDialog();
 
                         PsiClass aClass = chooser.getSelected();
                         if (aClass instanceof KtLightClassForSourceDeclaration) {
                             targetClass = ((KtLightClassForSourceDeclaration) aClass).getKotlinOrigin();
-                            targetClassChooser.setText(aClass.getQualifiedName());
+                            targetClassChooser.setText(Objects.requireNonNull(aClass.getQualifiedName()));
                         }
                         else {
                             targetClass = aClass;
@@ -164,15 +148,12 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
         if (codeFragment != null) {
             CompletionUtilsKt.setExtraCompletionFilter(
                     codeFragment,
-                    new Function1<LookupElement, Boolean>() {
-                        @Override
-                        public Boolean invoke(LookupElement lookupElement) {
-                            Object lookupObject = lookupElement.getObject();
-                            if (!(lookupObject instanceof DeclarationLookupObject)) return false;
-                            PsiElement psiElement = ((DeclarationLookupObject) lookupObject).getPsiElement();
-                            if (lookupObject instanceof PackageLookupObject) return true;
-                            return (psiElement instanceof KtClassOrObject) && KotlinRefactoringUtilKt.canRefactor(psiElement);
-                        }
+                    lookupElement -> {
+                        Object lookupObject = lookupElement.getObject();
+                        if (!(lookupObject instanceof DeclarationLookupObject)) return false;
+                        PsiElement psiElement = ((DeclarationLookupObject) lookupObject).getPsiElement();
+                        if (lookupObject instanceof PackageLookupObject) return true;
+                        return (psiElement instanceof KtClassOrObject) && KotlinRefactoringUtilKt.canRefactor(psiElement);
                     }
             );
         }
@@ -193,28 +174,27 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
         targetClassChooserPanel.add(targetClassChooser);
     }
 
-    private void initMemberInfo(@NotNull final List<KtClassOrObject> elementsToMove) {
+    private void initMemberInfo(@NotNull List<KtClassOrObject> elementsToMove) {
         List<KotlinMemberInfo> memberInfos = CollectionsKt.mapNotNull(
                 originalClass.getDeclarations(),
-                new Function1<KtDeclaration, KotlinMemberInfo>() {
-                    @Override
-                    public KotlinMemberInfo invoke(KtDeclaration declaration) {
-                        if (!(declaration instanceof KtClassOrObject)) return null;
-                        KtClassOrObject classOrObject = (KtClassOrObject) declaration;
+                declaration -> {
+                    if (!(declaration instanceof KtClassOrObject)) return null;
+                    KtClassOrObject classOrObject = (KtClassOrObject) declaration;
 
-                        if (classOrObject instanceof KtClass && ((KtClass) classOrObject).isInner()) return null;
-                        if (classOrObject instanceof KtObjectDeclaration && ((KtObjectDeclaration) classOrObject).isCompanion()) return null;
-
-                        KotlinMemberInfo memberInfo = new KotlinMemberInfo(classOrObject, false);
-                        memberInfo.setChecked(elementsToMove.contains(declaration));
-                        return memberInfo;
+                    if (classOrObject instanceof KtClass && ((KtClass) classOrObject).isInner()) return null;
+                    if (classOrObject instanceof KtObjectDeclaration && ((KtObjectDeclaration) classOrObject).isCompanion()) {
+                        return null;
                     }
+
+                    KotlinMemberInfo memberInfo = new KotlinMemberInfo(classOrObject, false);
+                    memberInfo.setChecked(elementsToMove.contains(declaration));
+                    return memberInfo;
                 }
         );
         KotlinMemberSelectionPanel selectionPanel = new KotlinMemberSelectionPanel(getTitle(), memberInfos, null);
         memberTable = selectionPanel.getTable();
         MemberInfoModelImpl memberInfoModel = new MemberInfoModelImpl();
-        memberInfoModel.memberInfoChanged(new MemberInfoChange<KtNamedDeclaration, KotlinMemberInfo>(memberInfos));
+        memberInfoModel.memberInfoChanged(new MemberInfoChange<>(memberInfos));
         selectionPanel.getTable().setMemberInfoModel(memberInfoModel);
         selectionPanel.getTable().addMemberInfoChangeListener(memberInfoModel);
         membersInfoPanel.add(selectionPanel, BorderLayout.CENTER);
@@ -223,12 +203,7 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
     private List<KtClassOrObject> getSelectedElementsToMove() {
         return CollectionsKt.map(
                 memberTable.getSelectedMemberInfos(),
-                new Function1<KotlinMemberInfo, KtClassOrObject>() {
-                    @Override
-                    public KtClassOrObject invoke(KotlinMemberInfo info) {
-                        return (KtClassOrObject) info.getMember();
-                    }
-                }
+                info -> (KtClassOrObject) info.getMember()
         );
     }
 
@@ -266,7 +241,7 @@ public class MoveKotlinNestedClassesDialog extends RefactoringDialog {
         MoveDeclarationsDelegate.NestedClass delegate = new MoveDeclarationsDelegate.NestedClass();
         MoveDeclarationsDescriptor descriptor = new MoveDeclarationsDescriptor(
                 myProject,
-                MoveSource(elementsToMove),
+                MoveKotlinDeclarationsProcessorKt.MoveSource(elementsToMove),
                 target,
                 delegate,
                 false,

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/MoveKotlinNestedClassesToUpperLevelDialog.java

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations.ui;
@@ -66,13 +55,9 @@ import org.jetbrains.kotlin.types.KotlinType;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ItemEvent;
-import java.awt.event.ItemListener;
 import java.util.Collections;
 import java.util.List;
 
-import static org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.MoveKotlinDeclarationsProcessorKt.MoveSource;
-
 public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
     @NonNls private static final String RECENTS_KEY = MoveKotlinNestedClassesToUpperLevelDialog.class.getName() + ".RECENTS_KEY";
 
@@ -160,7 +145,7 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
     }
 
     private boolean isThisNeeded() {
-        return innerClass instanceof KtClass && MoveUtilsKt.traverseOuterInstanceReferences((KtClass) innerClass, true);
+        return innerClass instanceof KtClass && MoveUtilsKt.traverseOuterInstanceReferences(innerClass, true);
     }
 
     @Nullable
@@ -180,12 +165,7 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
 
         if (innerClass instanceof KtClass && ((KtClass) innerClass).isInner()) {
             passOuterClassCheckBox.setSelected(true);
-            passOuterClassCheckBox.addItemListener(new ItemListener() {
-                @Override
-                public void itemStateChanged(ItemEvent e) {
-                    parameterField.setEnabled(passOuterClassCheckBox.isSelected());
-                }
-            });
+            passOuterClassCheckBox.addItemListener(e -> parameterField.setEnabled(passOuterClassCheckBox.isSelected()));
         }
         else {
             passOuterClassCheckBox.setSelected(false);
@@ -199,12 +179,9 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
             parameterField.setEnabled(thisNeeded);
         }
 
-        passOuterClassCheckBox.addItemListener(new ItemListener() {
-            @Override
-            public void itemStateChanged(ItemEvent e) {
-                boolean selected = passOuterClassCheckBox.isSelected();
-                parameterField.getComponent().setEnabled(selected);
-            }
+        passOuterClassCheckBox.addItemListener(e -> {
+            boolean selected = passOuterClassCheckBox.isSelected();
+            parameterField.getComponent().setEnabled(selected);
         });
 
         if (!(targetContainer instanceof PsiDirectory)) {
@@ -218,7 +195,7 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
                     innerClassBody != null
                     ? new NewDeclarationNameValidator(innerClassBody, (PsiElement) null,
                                                       NewDeclarationNameValidator.Target.VARIABLES,
-                                                      Collections.<KtDeclaration>emptyList())
+                                                      Collections.emptyList())
                     : new CollectingNameValidator();
             List<String> suggestions = KotlinNameSuggester.INSTANCE.suggestNamesByType(getOuterInstanceType(), validator, "outer");
             parameterField.setSuggestions(ArrayUtil.toStringArray(suggestions));
@@ -268,8 +245,8 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
             if (!Comparing.equal(oldPackageFqName != null ? oldPackageFqName.asString() : null, targetName)) {
                 ProjectRootManager projectRootManager = ProjectRootManager.getInstance(project);
                 List<VirtualFile> contentSourceRoots = JavaProjectRootsUtil.getSuitableDestinationSourceRoots(project);
-                final PackageWrapper newPackage = new PackageWrapper(PsiManager.getInstance(project), targetName);
-                final VirtualFile targetSourceRoot;
+                PackageWrapper newPackage = new PackageWrapper(PsiManager.getInstance(project), targetName);
+                VirtualFile targetSourceRoot;
                 if (contentSourceRoots.size() > 1) {
                     PsiDirectory initialDir = null;
                     PsiPackage oldPackage = oldPackageFqName != null
@@ -293,15 +270,12 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
                 }
                 PsiDirectory dir = RefactoringUtil.findPackageDirectoryInSourceRoot(newPackage, targetSourceRoot);
                 if (dir == null) {
-                    dir = ApplicationManager.getApplication().runWriteAction(new NullableComputable<PsiDirectory>() {
-                        @Override
-                        public PsiDirectory compute() {
-                            try {
-                                return RefactoringUtil.createPackageDirectoryInSourceRoot(newPackage, targetSourceRoot);
-                            }
-                            catch (IncorrectOperationException e) {
-                                return null;
-                            }
+                    dir = ApplicationManager.getApplication().runWriteAction((NullableComputable<PsiDirectory>) () -> {
+                        try {
+                            return RefactoringUtil.createPackageDirectoryInSourceRoot(newPackage, targetSourceRoot);
+                        }
+                        catch (IncorrectOperationException e) {
+                            return null;
                         }
                     });
                 }
@@ -321,12 +295,20 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
         String className = getClassName();
         String parameterName = getParameterName();
 
-        if (className != null && className.isEmpty()) throw new ConfigurationException(RefactoringBundle.message("no.class.name.specified"));
-        if (!KtPsiUtilKt.isIdentifier(className)) throw new ConfigurationException(RefactoringMessageUtil.getIncorrectIdentifierMessage(className));
+        if (className != null && className.isEmpty()) {
+            throw new ConfigurationException(RefactoringBundle.message("no.class.name.specified"));
+        }
+        if (!KtPsiUtilKt.isIdentifier(className)) {
+            throw new ConfigurationException(RefactoringMessageUtil.getIncorrectIdentifierMessage(className));
+        }
 
         if (passOuterClassCheckBox.isSelected()) {
-            if (parameterName != null && parameterName.isEmpty()) throw new ConfigurationException(RefactoringBundle.message("no.parameter.name.specified"));
-            if (!KtPsiUtilKt.isIdentifier(parameterName)) throw new ConfigurationException(RefactoringMessageUtil.getIncorrectIdentifierMessage(parameterName));
+            if (parameterName != null && parameterName.isEmpty()) {
+                throw new ConfigurationException(RefactoringBundle.message("no.parameter.name.specified"));
+            }
+            if (!KtPsiUtilKt.isIdentifier(parameterName)) {
+                throw new ConfigurationException(RefactoringMessageUtil.getIncorrectIdentifierMessage(parameterName));
+            }
         }
 
         PsiElement targetContainer = getTargetContainer();
@@ -350,7 +332,9 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
                     .getPackage(targetPackageFqName)
                     .getMemberScope()
                     .getContributedClassifier(Name.identifier(className), NoLookupLocation.FROM_IDE);
-            if (existingClass != null) throw new ConfigurationException("Class " + className + " already exists in package " +  targetPackageFqName);
+            if (existingClass != null) {
+                throw new ConfigurationException("Class " + className + " already exists in package " + targetPackageFqName);
+            }
 
             PsiDirectory targetDir = targetContainer instanceof PsiDirectory
                                      ? (PsiDirectory) targetContainer
@@ -382,34 +366,23 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
 
         KotlinMoveTarget moveTarget;
         if (target instanceof PsiDirectory) {
-            final PsiDirectory targetDir = (PsiDirectory) target;
+            PsiDirectory targetDir = (PsiDirectory) target;
 
-            final FqName targetPackageFqName = getTargetPackageFqName(target);
+            FqName targetPackageFqName = getTargetPackageFqName(target);
             if (targetPackageFqName == null) return;
 
-            final String targetFileName = KotlinNameSuggester.INSTANCE.suggestNameByName(
+            String targetFileName = KotlinNameSuggester.INSTANCE.suggestNameByName(
                     newClassName,
-                    new Function1<String, Boolean>() {
-                        @Override
-                        public Boolean invoke(String s) {
-                            return targetDir.findFile(s + "." + KotlinFileType.EXTENSION) == null;
-                        }
-                    }
+                    s -> targetDir.findFile(s + "." + KotlinFileType.EXTENSION) == null
             ) + "." + KotlinFileType.EXTENSION;
             moveTarget = new KotlinMoveTargetForDeferredFile(
                     targetPackageFqName,
                     targetDir,
                     null,
-                    new Function1<KtFile, KtFile>() {
-                        @Override
-                        public KtFile invoke(@NotNull KtFile originalFile) {
-                            return KotlinRefactoringUtilKt.createKotlinFile(targetFileName, targetDir, targetPackageFqName.asString());
-                        }
-                    }
+                    originalFile -> KotlinRefactoringUtilKt.createKotlinFile(targetFileName, targetDir, targetPackageFqName.asString())
             );
         }
         else {
-            //noinspection ConstantConditions
             moveTarget = new KotlinMoveTargetForExistingElement((KtElement) target);
         }
 
@@ -417,7 +390,7 @@ public class MoveKotlinNestedClassesToUpperLevelDialog extends MoveDialogBase {
         MoveDeclarationsDelegate delegate = new MoveDeclarationsDelegate.NestedClass(newClassName, outerInstanceParameterName);
         MoveDeclarationsDescriptor moveDescriptor = new MoveDeclarationsDescriptor(
                 project,
-                MoveSource(innerClass),
+                MoveKotlinDeclarationsProcessorKt.MoveSource(innerClass),
                 moveTarget,
                 delegate,
                 isSearchInComments(),

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/MoveKotlinTopLevelDeclarationsDialog.java

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveDeclarations.ui;
@@ -32,8 +21,10 @@ import com.intellij.openapi.util.Pass;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.*;
+import com.intellij.psi.impl.source.PsiFileImpl;
 import com.intellij.refactoring.*;
 import com.intellij.refactoring.classMembers.AbstractMemberInfoModel;
+import com.intellij.refactoring.classMembers.MemberInfoBase;
 import com.intellij.refactoring.classMembers.MemberInfoChange;
 import com.intellij.refactoring.classMembers.MemberInfoChangeListener;
 import com.intellij.refactoring.move.MoveCallback;
@@ -46,12 +37,9 @@ import com.intellij.refactoring.util.CommonRefactoringUtil;
 import com.intellij.ui.ComboboxWithBrowseButton;
 import com.intellij.ui.RecentsManager;
 import com.intellij.ui.ReferenceEditorComboWithBrowseButton;
-import com.intellij.util.Function;
 import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.ui.UIUtil;
 import kotlin.collections.CollectionsKt;
-import kotlin.jvm.functions.Function0;
-import kotlin.jvm.functions.Function1;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.idea.KotlinFileType;
@@ -70,19 +58,17 @@ import org.jetbrains.kotlin.idea.util.application.ApplicationUtilsKt;
 import org.jetbrains.kotlin.name.FqName;
 import org.jetbrains.kotlin.psi.KtFile;
 import org.jetbrains.kotlin.psi.KtNamedDeclaration;
+import org.jetbrains.kotlin.psi.KtPureElement;
 import org.jetbrains.kotlin.psi.psiUtil.KtPsiUtilKt;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.io.File;
 import java.nio.file.Path;
 import java.util.List;
 import java.util.*;
 
 import static java.util.Collections.emptyList;
-import static org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.MoveKotlinDeclarationsProcessorKt.MoveSource;
 
 public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
     private static final String RECENTS_KEY = "MoveKotlinTopLevelDeclarationsDialog.RECENTS_KEY";
@@ -143,12 +129,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
         return CollectionsKt.distinct(
                 CollectionsKt.map(
                         elementsToMove,
-                        new Function1<KtNamedDeclaration, KtFile>() {
-                            @Override
-                            public KtFile invoke(KtNamedDeclaration declaration) {
-                                return declaration.getContainingKtFile();
-                            }
-                        }
+                        KtPureElement::getContainingKtFile
                 )
         );
     }
@@ -159,12 +140,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                 CollectionsKt.distinct(
                         CollectionsKt.map(
                                 sourceFiles,
-                                new Function1<KtFile, PsiDirectory>() {
-                                    @Override
-                                    public PsiDirectory invoke(KtFile jetFile) {
-                                        return jetFile.getParent();
-                                    }
-                                }
+                                PsiFileImpl::getParent
                         )
                 )
         );
@@ -174,12 +150,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
         return CollectionsKt.filterIsInstance(
                 CollectionsKt.flatMap(
                         sourceFiles,
-                        new Function1<KtFile, Iterable<?>>() {
-                            @Override
-                            public Iterable<?> invoke(KtFile ktFile) {
-                                return KtPsiUtilKt.getFileOrScriptDeclarations(ktFile);
-                            }
-                        }
+                        KtPsiUtilKt::getFileOrScriptDeclarations
                 ),
                 KtNamedDeclaration.class
         );
@@ -196,7 +167,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
     private static List<PsiFile> getFilesExistingInTargetDir(
             @NotNull List<KtFile> sourceFiles,
             @Nullable String targetFileName,
-            @Nullable final PsiDirectory targetDirectory
+            @Nullable PsiDirectory targetDirectory
     ) {
         if (targetDirectory == null) return emptyList();
 
@@ -205,62 +176,44 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                 ? Collections.singletonList(targetFileName)
                 : CollectionsKt.map(
                         sourceFiles,
-                        new Function1<KtFile, String>() {
-                            @Override
-                            public String invoke(KtFile jetFile) {
-                                return jetFile.getName();
-                            }
-                        }
+                        PsiFileImpl::getName
                 );
 
         return CollectionsKt.filterNotNull(
                 CollectionsKt.map(
                         fileNames,
-                        new Function1<String, PsiFile>() {
-                            @Override
-                            public PsiFile invoke(String s) {
-                                return targetDirectory.findFile(s);
-                            }
-                        }
+                        targetDirectory::findFile
                 )
         );
     }
 
     private void initMemberInfo(
-            @NotNull final Set<KtNamedDeclaration> elementsToMove,
+            @NotNull Set<KtNamedDeclaration> elementsToMove,
             @NotNull List<KtFile> sourceFiles
     ) {
-        final List<KotlinMemberInfo> memberInfos = CollectionsKt.map(
+        List<KotlinMemberInfo> memberInfos = CollectionsKt.map(
                 getAllDeclarations(sourceFiles),
-                new Function1<KtNamedDeclaration, KotlinMemberInfo>() {
-                    @Override
-                    public KotlinMemberInfo invoke(KtNamedDeclaration declaration) {
-                        KotlinMemberInfo memberInfo = new KotlinMemberInfo(declaration, false);
-                        memberInfo.setChecked(elementsToMove.contains(declaration));
-                        return memberInfo;
-                    }
+                declaration -> {
+                    KotlinMemberInfo memberInfo = new KotlinMemberInfo(declaration, false);
+                    memberInfo.setChecked(elementsToMove.contains(declaration));
+                    return memberInfo;
                 }
         );
         KotlinMemberSelectionPanel selectionPanel = new KotlinMemberSelectionPanel(getTitle(), memberInfos, null);
         memberTable = selectionPanel.getTable();
         MemberInfoModelImpl memberInfoModel = new MemberInfoModelImpl();
-        memberInfoModel.memberInfoChanged(new MemberInfoChange<KtNamedDeclaration, KotlinMemberInfo>(memberInfos));
+        memberInfoModel.memberInfoChanged(new MemberInfoChange<>(memberInfos));
         selectionPanel.getTable().setMemberInfoModel(memberInfoModel);
         selectionPanel.getTable().addMemberInfoChangeListener(memberInfoModel);
         selectionPanel.getTable().addMemberInfoChangeListener(
                 new MemberInfoChangeListener<KtNamedDeclaration, KotlinMemberInfo>() {
-                    private boolean shouldUpdateFileNameField(final Collection<KotlinMemberInfo> changedMembers) {
+                    private boolean shouldUpdateFileNameField(Collection<KotlinMemberInfo> changedMembers) {
                         if (!tfFileNameInPackage.isEnabled()) return true;
 
                         Collection<KtNamedDeclaration> previousDeclarations = CollectionsKt.filterNotNull(
                                 CollectionsKt.map(
                                         memberInfos,
-                                        new Function1<KotlinMemberInfo, KtNamedDeclaration>() {
-                                            @Override
-                                            public KtNamedDeclaration invoke(KotlinMemberInfo info) {
-                                                return changedMembers.contains(info) != info.isChecked() ? info.getMember() : null;
-                                            }
-                                        }
+                                        info -> changedMembers.contains(info) != info.isChecked() ? info.getMember() : null
                                 )
                         );
                         String suggestedText = previousDeclarations.isEmpty()
@@ -270,7 +223,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                     }
 
                     @Override
-                    public void memberInfoChanged(MemberInfoChange<KtNamedDeclaration, KotlinMemberInfo> event) {
+                    public void memberInfoChanged(@NotNull MemberInfoChange<KtNamedDeclaration, KotlinMemberInfo> event) {
                         updatePackageDirectiveCheckBox();
                         updateFileNameInPackageField();
                         // Update file name field only if it user hasn't changed it to some non-default value
@@ -285,7 +238,6 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
 
     private void updateSuggestedFileName() {
         tfFileNameInPackage.setText(MoveUtilsKt.guessNewFileName(getSelectedElementsToMove()));
-
     }
 
     private void updateFileNameInPackageField() {
@@ -316,14 +268,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                 classPackageChooser.getChildComponent()
         );
 
-        cbSpecifyFileNameInPackage.addActionListener(
-                new ActionListener() {
-                    @Override
-                    public void actionPerformed(@NotNull ActionEvent e) {
-                        updateFileNameInPackageField();
-                    }
-                }
-        );
+        cbSpecifyFileNameInPackage.addActionListener(e -> updateFileNameInPackageField());
 
         cbUpdatePackageDirective.setSelected(arePackagesAndDirectoryMatched(sourceFiles));
     }
@@ -342,22 +287,16 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
         }
 
         rbMoveToPackage.addActionListener(
-                new ActionListener() {
-                    @Override
-                    public void actionPerformed(@NotNull ActionEvent e) {
-                        classPackageChooser.requestFocus();
-                        updateControls();
-                    }
+                e -> {
+                    classPackageChooser.requestFocus();
+                    updateControls();
                 }
         );
 
         rbMoveToFile.addActionListener(
-                new ActionListener() {
-                    @Override
-                    public void actionPerformed(@NotNull ActionEvent e) {
-                        fileChooser.requestFocus();
-                        updateControls();
-                    }
+                e -> {
+                    fileChooser.requestFocus();
+                    updateControls();
                 }
         );
     }
@@ -367,33 +306,30 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
             @NotNull Set<KtNamedDeclaration> elementsToMove,
             @NotNull List<KtFile> sourceFiles
     ) {
-        final PsiDirectory sourceDir = sourceFiles.get(0).getParent();
+        PsiDirectory sourceDir = sourceFiles.get(0).getParent();
         assert sourceDir != null : sourceFiles.get(0).getVirtualFile().getPath();
 
         fileChooser.addActionListener(
-                new ActionListener() {
-                    @Override
-                    public void actionPerformed(ActionEvent e) {
-                        KotlinFileChooserDialog dialog = new KotlinFileChooserDialog("Choose Containing File", myProject);
+                e -> {
+                    KotlinFileChooserDialog dialog = new KotlinFileChooserDialog("Choose Containing File", myProject);
 
-                        File targetFile = new File(getTargetFilePath());
-                        PsiFile targetPsiFile = PhysicalFileSystemUtilsKt.toPsiFile(targetFile, myProject);
-                        if (targetPsiFile instanceof KtFile) {
-                            dialog.select((KtFile) targetPsiFile);
-                        }
-                        else {
-                            PsiDirectory targetDir = PhysicalFileSystemUtilsKt.toPsiDirectory(targetFile.getParentFile(), myProject);
-                            if (targetDir == null) {
-                                targetDir = sourceDir;
-                            }
-                            dialog.selectDirectory(targetDir);
+                    File targetFile1 = new File(getTargetFilePath());
+                    PsiFile targetPsiFile = PhysicalFileSystemUtilsKt.toPsiFile(targetFile1, myProject);
+                    if (targetPsiFile instanceof KtFile) {
+                        dialog.select((KtFile) targetPsiFile);
+                    }
+                    else {
+                        PsiDirectory targetDir = PhysicalFileSystemUtilsKt.toPsiDirectory(targetFile1.getParentFile(), myProject);
+                        if (targetDir == null) {
+                            targetDir = sourceDir;
                         }
+                        dialog.selectDirectory(targetDir);
+                    }
 
-                        dialog.showDialog();
-                        KtFile selectedFile = dialog.isOK() ? dialog.getSelected() : null;
-                        if (selectedFile != null) {
-                            fileChooser.setText(selectedFile.getVirtualFile().getPath());
-                        }
+                    dialog.showDialog();
+                    KtFile selectedFile = dialog.isOK() ? dialog.getSelected() : null;
+                    if (selectedFile != null) {
+                        fileChooser.setText(selectedFile.getVirtualFile().getPath());
                     }
                 }
         );
@@ -446,12 +382,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
     private boolean isFullFileMove() {
         Map<KtFile, List<KtNamedDeclaration>> fileToElements = CollectionsKt.groupBy(
                 getSelectedElementsToMove(),
-                new Function1<KtNamedDeclaration, KtFile>() {
-                    @Override
-                    public KtFile invoke(KtNamedDeclaration declaration) {
-                        return declaration.getContainingKtFile();
-                    }
-                }
+                KtPureElement::getContainingKtFile
         );
         for (Map.Entry<KtFile, List<KtNamedDeclaration>> entry : fileToElements.entrySet()) {
             if (KtPsiUtilKt.getFileOrScriptDeclarations(entry.getKey()).size() != entry.getValue().size()) return false;
@@ -486,7 +417,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
             if (ret != Messages.YES) return null;
         }
 
-        DirectoryChooser.ItemWrapper selectedItem = (DirectoryChooser.ItemWrapper)destinationFolderCB.getComboBox().getSelectedItem();
+        DirectoryChooser.ItemWrapper selectedItem = (DirectoryChooser.ItemWrapper) destinationFolderCB.getComboBox().getSelectedItem();
         PsiDirectory selectedPsiDirectory = selectedItem != null ? selectedItem.getDirectory() : null;
         if (selectedPsiDirectory == null) {
             if (initialTargetDirectory != null) {
@@ -525,9 +456,9 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
             if (targetDirWithMoveDestination == null) return null;
 
             VirtualFile targetDir = targetDirWithMoveDestination.getFirst();
-            final MoveDestination moveDestination = targetDirWithMoveDestination.getSecond();
+            MoveDestination moveDestination = targetDirWithMoveDestination.getSecond();
 
-            final String targetFileName = sourceFiles.size() > 1 ? null : tfFileNameInPackage.getText();
+            String targetFileName = sourceFiles.size() > 1 ? null : tfFileNameInPackage.getText();
             if (targetFileName != null && !checkTargetFileName(targetFileName)) return null;
 
             PsiDirectory targetDirectory = moveDestination.getTargetIfExists(sourceDirectory);
@@ -537,12 +468,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                 if (filesExistingInTargetDir.size() > 1) {
                     String filePathsToReport = StringUtil.join(
                             filesExistingInTargetDir,
-                            new Function<PsiFile, String>() {
-                                @Override
-                                public String fun(PsiFile file) {
-                                    return file.getVirtualFile().getPath();
-                                }
-                            },
+                            file -> file.getVirtualFile().getPath(),
                             "\n"
                     );
                     Messages.showErrorDialog(
@@ -560,7 +486,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                             "File '%s' already exists. Do you want to move selected declarations to this file?",
                             targetFile.getVirtualFile().getPath()
                     );
-                    int ret=
+                    int ret =
                             Messages.showYesNoDialog(myProject, question, RefactoringBundle.message("move.title"),
                                                      Messages.getQuestionIcon());
                     if (ret != Messages.YES) return null;
@@ -576,19 +502,14 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                     new FqName(getTargetPackage()),
                     moveDestination.getTargetIfExists(sourceFiles.get(0)),
                     targetDir,
-                    new Function1<KtFile, KtFile>() {
-                        @Override
-                        public KtFile invoke(@NotNull KtFile originalFile) {
-                            return KotlinRefactoringUtilKt.getOrCreateKotlinFile(
-                                    targetFileName != null ? targetFileName : originalFile.getName(),
-                                    moveDestination.getTargetDirectory(originalFile)
-                            );
-                        }
-                    }
+                    originalFile -> KotlinRefactoringUtilKt.getOrCreateKotlinFile(
+                            targetFileName != null ? targetFileName : originalFile.getName(),
+                            moveDestination.getTargetDirectory(originalFile)
+                    )
             );
         }
 
-        final File targetFile = new File(getTargetFilePath());
+        File targetFile = new File(getTargetFilePath());
         if (!checkTargetFileName(targetFile.getName())) return null;
         KtFile jetFile = (KtFile) PhysicalFileSystemUtilsKt.toPsiFile(targetFile, myProject);
         if (jetFile != null) {
@@ -602,7 +523,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
 
         Path targetFilePath = targetFile.toPath();
         Path targetDirPath = targetFilePath.getParent();
-        if (targetDirPath == null || !targetDirPath.startsWith(getProject().getBasePath())) {
+        if (targetDirPath == null || !targetDirPath.startsWith(Objects.requireNonNull(getProject().getBasePath()))) {
             setErrorText("Incorrect target path. Directory " + targetDirPath + " does not belong to current project.");
             return null;
         }
@@ -625,7 +546,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
         }
 
         File targetDir = targetDirPath.toFile();
-        final PsiDirectory psiDirectory = targetDir != null ? PhysicalFileSystemUtilsKt.toPsiDirectory(targetDir, myProject) : null;
+        PsiDirectory psiDirectory = targetDir != null ? PhysicalFileSystemUtilsKt.toPsiDirectory(targetDir, myProject) : null;
         if (psiDirectory == null) {
             setErrorText("No directory found for file: " + targetFile.getPath());
             return null;
@@ -633,13 +554,8 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
 
         Set<FqName> sourcePackageFqNames = CollectionsKt.mapTo(
                 sourceFiles,
-                new LinkedHashSet<FqName>(),
-                new Function1<KtFile, FqName>() {
-                    @Override
-                    public FqName invoke(KtFile file) {
-                        return file.getPackageFqName();
-                    }
-                }
+                new LinkedHashSet<>(),
+                KtFile::getPackageFqName
         );
         FqName targetPackageFqName = CollectionsKt.singleOrNull(sourcePackageFqNames);
         if (targetPackageFqName == null) {
@@ -651,17 +567,12 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
             targetPackageFqName = new FqName(psiPackage.getQualifiedName());
         }
 
-        final String finalTargetPackageFqName = targetPackageFqName.asString();
+        String finalTargetPackageFqName = targetPackageFqName.asString();
         return new KotlinMoveTargetForDeferredFile(
                 targetPackageFqName,
                 psiDirectory,
                 null,
-                new Function1<KtFile, KtFile>() {
-                    @Override
-                    public KtFile invoke(@NotNull KtFile originalFile) {
-                        return KotlinRefactoringUtilKt.getOrCreateKotlinFile(targetFile.getName(), psiDirectory, finalTargetPackageFqName);
-                    }
-                }
+                originalFile -> KotlinRefactoringUtilKt.getOrCreateKotlinFile(targetFile.getName(), psiDirectory, finalTargetPackageFqName)
         );
     }
 
@@ -692,12 +603,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
     private List<KtNamedDeclaration> getSelectedElementsToMove() {
         return CollectionsKt.map(
                 memberTable.getSelectedMemberInfos(),
-                new Function1<KotlinMemberInfo, KtNamedDeclaration>() {
-                    @Override
-                    public KtNamedDeclaration invoke(KotlinMemberInfo info) {
-                        return info.getMember();
-                    }
-                }
+                MemberInfoBase::getMember
         );
     }
 
@@ -736,7 +642,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
 
         List<KtNamedDeclaration> elementsToMove = getSelectedElementsToMove();
         List<KtFile> sourceFiles = getSourceFiles(elementsToMove);
-        final PsiDirectory sourceDirectory = getSourceDirectory(sourceFiles);
+        PsiDirectory sourceDirectory = getSourceDirectory(sourceFiles);
 
         for (PsiElement element : elementsToMove) {
             String message = target.verify(element.getContainingFile());
@@ -754,7 +660,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                     Pair<VirtualFile, ? extends MoveDestination> sourceRootWithMoveDestination =
                             selectPackageBasedTargetDirAndDestination(false);
                     //noinspection ConstantConditions
-                    final MoveDestination moveDestination = sourceRootWithMoveDestination.getSecond();
+                    MoveDestination moveDestination = sourceRootWithMoveDestination.getSecond();
 
                     PsiDirectory targetDir = moveDestination.getTargetIfExists(sourceDirectory);
                     String targetFileName = sourceFiles.size() > 1 ? null : tfFileNameInPackage.getText();
@@ -762,12 +668,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
                     if (filesExistingInTargetDir.isEmpty()
                         || (filesExistingInTargetDir.size() == 1 && sourceFiles.contains(filesExistingInTargetDir.get(0)))) {
                         PsiDirectory targetDirectory = ApplicationUtilsKt.runWriteAction(
-                                new Function0<PsiDirectory>() {
-                                    @Override
-                                    public PsiDirectory invoke() {
-                                        return moveDestination.getTargetDirectory(sourceDirectory);
-                                    }
-                                }
+                                () -> moveDestination.getTargetDirectory(sourceDirectory)
                         );
 
                         for (KtFile sourceFile : sourceFiles) {
@@ -809,7 +710,7 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
 
             MoveDeclarationsDescriptor options = new MoveDeclarationsDescriptor(
                     myProject,
-                    MoveSource(elementsToMove),
+                    MoveKotlinDeclarationsProcessorKt.MoveSource(elementsToMove),
                     target,
                     MoveDeclarationsDelegate.TopLevel.INSTANCE,
                     isSearchInComments(),

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/FqNameFixingMoveJavaFIleHandler.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveFilesOrDirectories
@@ -31,10 +20,14 @@ class FqNameFixingMoveJavaFileHandler : MoveFileHandler() {
     private val delegate = MoveJavaFileHandler()
 
     override fun canProcessElement(element: PsiFile) =
-            delegate.canProcessElement(element)
+        delegate.canProcessElement(element)
 
-    override fun findUsages(psiFile: PsiFile, newParent: PsiDirectory?, searchInComments: Boolean, searchInNonJavaFiles: Boolean) =
-            delegate.findUsages(psiFile, newParent, searchInComments, searchInNonJavaFiles)
+    override fun findUsages(
+        psiFile: PsiFile,
+        newParent: PsiDirectory?,
+        searchInComments: Boolean,
+        searchInNonJavaFiles: Boolean
+    ): MutableList<UsageInfo>? = delegate.findUsages(psiFile, newParent, searchInComments, searchInNonJavaFiles)
 
     override fun prepareMovedFile(file: PsiFile, moveDestination: PsiDirectory, oldToNewMap: MutableMap<PsiElement, PsiElement>) {
         delegate.prepareMovedFile(file, moveDestination, oldToNewMap)
@@ -47,8 +40,8 @@ class FqNameFixingMoveJavaFileHandler : MoveFileHandler() {
     }
 
     override fun updateMovedFile(file: PsiFile) =
-            delegate.updateMovedFile(file)
+        delegate.updateMovedFile(file)
 
     override fun retargetUsages(usageInfos: MutableList<UsageInfo>, oldToNewMap: MutableMap<PsiElement, PsiElement>) =
-            delegate.retargetUsages(usageInfos, oldToNewMap)
+        delegate.retargetUsages(usageInfos, oldToNewMap)
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/KotlinMoveDirectoryWithClassesHelper.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveFilesOrDirectories
@@ -40,14 +29,14 @@ import java.util.*
 
 class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
     private data class FileUsagesWrapper(
-            val psiFile: KtFile,
-            val usages: List<UsageInfo>,
-            val moveDeclarationsProcessor: MoveKotlinDeclarationsProcessor?
+        val psiFile: KtFile,
+        val usages: List<UsageInfo>,
+        val moveDeclarationsProcessor: MoveKotlinDeclarationsProcessor?
     ) : UsageInfo(psiFile)
 
     private class MoveContext(
-            val newParent: PsiDirectory,
-            val moveDeclarationsProcessor: MoveKotlinDeclarationsProcessor?
+        val newParent: PsiDirectory,
+        val moveDeclarationsProcessor: MoveKotlinDeclarationsProcessor?
     )
 
     private val fileHandler = MoveKotlinFileHandler()
@@ -62,23 +51,24 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
     }
 
     override fun findUsages(
-            filesToMove: MutableCollection<PsiFile>,
-            directoriesToMove: Array<out PsiDirectory>,
-            result: MutableCollection<UsageInfo>,
-            searchInComments: Boolean,
-            searchInNonJavaFiles: Boolean,
-            project: Project) {
+        filesToMove: MutableCollection<PsiFile>,
+        directoriesToMove: Array<out PsiDirectory>,
+        result: MutableCollection<UsageInfo>,
+        searchInComments: Boolean,
+        searchInNonJavaFiles: Boolean,
+        project: Project
+    ) {
         filesToMove
-                .filterIsInstance<KtFile>()
-                .mapTo(result) { FileUsagesWrapper(it, fileHandler.findUsages(it, null, false), null) }
+            .filterIsInstance<KtFile>()
+            .mapTo(result) { FileUsagesWrapper(it, fileHandler.findUsages(it, null, false), null) }
     }
 
     override fun preprocessUsages(
-            project: Project,
-            files: MutableSet<PsiFile>,
-            infos: Array<UsageInfo>,
-            directory: PsiDirectory?,
-            conflicts: MultiMap<PsiElement, String>
+        project: Project,
+        files: MutableSet<PsiFile>,
+        infos: Array<UsageInfo>,
+        directory: PsiDirectory?,
+        conflicts: MultiMap<PsiElement, String>
     ) {
         val psiPackage = directory?.getPackage() ?: return
         val moveTarget = KotlinDirectoryMoveTarget(FqName(psiPackage.qualifiedName), directory)
@@ -101,11 +91,11 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
 
     // Actual move logic is implemented in postProcessUsages since usages are not available here
     override fun move(
-            file: PsiFile,
-            moveDestination: PsiDirectory,
-            oldToNewElementsMapping: MutableMap<PsiElement, PsiElement>,
-            movedFiles: MutableList<PsiFile>,
-            listener: RefactoringElementListener?
+        file: PsiFile,
+        moveDestination: PsiDirectory,
+        oldToNewElementsMapping: MutableMap<PsiElement, PsiElement>,
+        movedFiles: MutableList<PsiFile>,
+        listener: RefactoringElementListener?
     ): Boolean {
         if (file !is KtFile) return false
 
@@ -130,7 +120,7 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
             val usagesToProcess = ArrayList<FileUsagesWrapper>()
             usages
                 .filterIsInstance<FileUsagesWrapper>()
-                .forEach body@ {
+                .forEach body@{
                     val file = it.psiFile
                     val moveContext = fileToMoveContext[file] ?: return@body
 
@@ -142,8 +132,7 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
                     usagesToProcess += FileUsagesWrapper(movedFile as KtFile, it.usages, moveDeclarationsProcessor)
                 }
             usagesToProcess.forEach { fileHandler.retargetUsages(it.usages, it.moveDeclarationsProcessor!!) }
-        }
-        finally {
+        } finally {
             this.fileToMoveContext = null
         }
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/KotlinMoveFilesOrDirectoriesHandler.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveFilesOrDirectories
@@ -55,14 +44,20 @@ class KotlinMoveFilesOrDirectoriesHandler : MoveFilesOrDirectoriesHandler() {
         if (!(targetContainer == null || targetContainer is PsiDirectory || targetContainer is PsiDirectoryContainer)) return
 
         moveFilesOrDirectories(
-                project,
-                adjustForMove(project, elements, targetContainer) ?: return,
-                targetContainer,
-                callback?.let { MoveCallback { it.refactoringCompleted() } }
+            project,
+            adjustForMove(project, elements, targetContainer) ?: return,
+            targetContainer,
+            callback?.let { MoveCallback { it.refactoringCompleted() } }
         )
     }
 
-    override fun tryToMove(element: PsiElement, project: Project, dataContext: DataContext?, reference: PsiReference?, editor: Editor?): Boolean {
+    override fun tryToMove(
+        element: PsiElement,
+        project: Project,
+        dataContext: DataContext?,
+        reference: PsiReference?,
+        editor: Editor?
+    ): Boolean {
         if (element is KtLightClassForFacade) {
             doMove(project, element.files.toTypedArray(), dataContext?.getData(LangDataKeys.TARGET_PSI_ELEMENT), null)
             return true

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/MoveKotlinFileHandler.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move.moveFilesOrDirectories
@@ -48,9 +37,9 @@ class MoveKotlinFileHandler : MoveFileHandler() {
     // This is special 'PsiElement' whose purpose is to wrap MoveKotlinTopLevelDeclarationsProcessor
     // so that it can be kept in the usage info list
     private class MoveContext(
-            val file: PsiFile,
-            val declarationMoveProcessor: MoveKotlinDeclarationsProcessor
-    ): LightElement(file.manager, KotlinLanguage.INSTANCE) {
+        val file: PsiFile,
+        val declarationMoveProcessor: MoveKotlinDeclarationsProcessor
+    ) : LightElement(file.manager, KotlinLanguage.INSTANCE) {
         override fun toString() = ""
     }
 
@@ -61,12 +50,15 @@ class MoveKotlinFileHandler : MoveFileHandler() {
         if (!shouldUpdatePackageDirective) return null
 
         val oldPackageName = packageFqName
-        val newPackage = newParent?.getPackage() ?: return ContainerChangeInfo(ContainerInfo.Package(oldPackageName),
-                                                                               ContainerInfo.UnknownPackage)
+        val newPackage = newParent?.getPackage() ?: return ContainerChangeInfo(
+            ContainerInfo.Package(oldPackageName),
+            ContainerInfo.UnknownPackage
+        )
 
         val newPackageName = FqNameUnsafe(newPackage.qualifiedName)
         if (oldPackageName.asString() == newPackageName.asString()
-            && ModuleUtilCore.findModuleForPsiElement(this) == ModuleUtilCore.findModuleForPsiElement(newParent)) return null
+            && ModuleUtilCore.findModuleForPsiElement(this) == ModuleUtilCore.findModuleForPsiElement(newParent)
+        ) return null
         if (!newPackageName.hasIdentifiersOnly()) return null
 
         return ContainerChangeInfo(ContainerInfo.Package(oldPackageName), ContainerInfo.Package(newPackageName.toSafe()))
@@ -78,8 +70,7 @@ class MoveKotlinFileHandler : MoveFileHandler() {
 
         val project = psiFile.project
 
-        val newPackage = packageNameInfo.newContainer
-        val moveTarget = when (newPackage) {
+        val moveTarget = when (val newPackage = packageNameInfo.newContainer) {
             ContainerInfo.UnknownPackage -> EmptyKotlinMoveTarget
 
             else -> KotlinMoveTargetForDeferredFile(newPackage.fqName!!, newParent) {
@@ -108,18 +99,18 @@ class MoveKotlinFileHandler : MoveFileHandler() {
     }
 
     override fun findUsages(
-            psiFile: PsiFile,
-            newParent: PsiDirectory?,
-            searchInComments: Boolean,
-            searchInNonJavaFiles: Boolean
+        psiFile: PsiFile,
+        newParent: PsiDirectory?,
+        searchInComments: Boolean,
+        searchInNonJavaFiles: Boolean
     ): List<UsageInfo> {
         return findUsages(psiFile, newParent, true)
     }
 
     fun findUsages(
-            psiFile: PsiFile,
-            newParent: PsiDirectory?,
-            withConflicts: Boolean
+        psiFile: PsiFile,
+        newParent: PsiDirectory?,
+        withConflicts: Boolean
     ): List<UsageInfo> {
         if (psiFile !is KtFile) return emptyList()
 
@@ -149,7 +140,7 @@ class MoveKotlinFileHandler : MoveFileHandler() {
 
     override fun retargetUsages(usageInfos: List<UsageInfo>?, oldToNewMap: Map<PsiElement, PsiElement>) {
         val currentFile = (usageInfos?.firstOrNull() as? FileInfo)?.element
-        val moveContext = oldToNewMap.keys.firstOrNull { it is MoveContext && it.file == currentFile} as? MoveContext ?: return
+        val moveContext = oldToNewMap.keys.firstOrNull { it is MoveContext && it.file == currentFile } as? MoveContext ?: return
         retargetUsages(usageInfos, moveContext.declarationMoveProcessor)
     }
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveUtils.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.move
@@ -64,11 +53,11 @@ sealed class ContainerInfo {
     abstract fun matches(descriptor: DeclarationDescriptor): Boolean
 
     object UnknownPackage : ContainerInfo() {
-        override val fqName = null
+        override val fqName: FqName? = null
         override fun matches(descriptor: DeclarationDescriptor) = descriptor is PackageViewDescriptor
     }
 
-    class Package(override val fqName: FqName): ContainerInfo() {
+    class Package(override val fqName: FqName) : ContainerInfo() {
         override fun matches(descriptor: DeclarationDescriptor): Boolean {
             return descriptor is PackageFragmentDescriptor && descriptor.fqName == fqName
         }
@@ -100,8 +89,8 @@ fun KtElement.getInternalReferencesToUpdateOnPackageNameChange(containerChangeIn
 private typealias UsageInfoFactory = (KtSimpleNameExpression) -> UsageInfo?
 
 fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
-        containerChangeInfo: ContainerChangeInfo,
-        body: (originalRefExpr: KtSimpleNameExpression, usageFactory: UsageInfoFactory) -> Unit
+    containerChangeInfo: ContainerChangeInfo,
+    body: (originalRefExpr: KtSimpleNameExpression, usageFactory: UsageInfoFactory) -> Unit
 ) {
     val file = containingFile as? KtFile ?: return
 
@@ -111,8 +100,7 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
         val fqName = DescriptorUtils.getFqName(descriptor).let { if (it.isSafe) it.toSafe() else return@isImported false }
         if (importPaths.any { fqName.isImported(it, false) }) return true
 
-        val containingDescriptor = descriptor.containingDeclaration
-        return when (containingDescriptor) {
+        return when (val containingDescriptor = descriptor.containingDeclaration) {
             is ClassDescriptor, is PackageViewDescriptor -> isImported(containingDescriptor)
             else -> false
         }
@@ -138,7 +126,8 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
             var result = DescriptorToSourceUtilsIde.getAnyDeclaration(project, descriptor) ?: return@lazy null
 
             if (descriptor.isCompanionObject()
-                && bindingContext[BindingContext.SHORT_REFERENCE_TO_COMPANION_OBJECT, refExpr] != null) {
+                && bindingContext[BindingContext.SHORT_REFERENCE_TO_COMPANION_OBJECT, refExpr] != null
+            ) {
                 result = (result as KtObjectDeclaration).containingClassOrObject ?: result
             }
 
@@ -150,8 +139,8 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
                 if (isExtension && containingDescriptor is ClassDescriptor) {
                     val dispatchReceiver = refExpr.getResolvedCall(bindingContext)?.dispatchReceiver
                     val implicitClass = (dispatchReceiver as? ImplicitClassReceiver)?.classDescriptor
-                    if (implicitClass?.isCompanionObject ?: false) {
-                        return { ImplicitCompanionAsDispatchReceiverUsageInfo(it, implicitClass!!) }
+                    if (implicitClass?.isCompanionObject == true) {
+                        return { ImplicitCompanionAsDispatchReceiverUsageInfo(it, implicitClass) }
                     }
                     if (dispatchReceiver != null || containingDescriptor.kind != ClassKind.OBJECT) return null
                 }
@@ -159,8 +148,9 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
 
             if (!isExtension) {
                 if (!(containingDescriptor is PackageFragmentDescriptor
-                      || containingDescriptor is ClassDescriptor && containingDescriptor.kind == ClassKind.OBJECT
-                      || descriptor is JavaCallableMemberDescriptor && ((declaration as? PsiMember)?.hasModifierProperty(PsiModifier.STATIC) ?: false))) return null
+                            || containingDescriptor is ClassDescriptor && containingDescriptor.kind == ClassKind.OBJECT
+                            || descriptor is JavaCallableMemberDescriptor && ((declaration as? PsiMember)?.hasModifierProperty(PsiModifier.STATIC) == true))
+                ) return null
             }
         }
 
@@ -169,15 +159,15 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
         val (oldContainer, newContainer) = containerChangeInfo
 
         val containerFqName = descriptor
-                .parents
-                .mapNotNull {
-                    when {
-                        oldContainer.matches(it) -> oldContainer.fqName
-                        newContainer.matches(it) -> newContainer.fqName
-                        else -> null
-                    }
+            .parents
+            .mapNotNull {
+                when {
+                    oldContainer.matches(it) -> oldContainer.fqName
+                    newContainer.matches(it) -> newContainer.fqName
+                    else -> null
                 }
-                .firstOrNull()
+            }
+            .firstOrNull()
 
         val isImported = isImported(descriptor)
         if (isImported && this is KtFile) return null
@@ -207,9 +197,9 @@ internal fun markInternalUsages(usages: Collection<UsageInfo>) {
 }
 
 internal fun restoreInternalUsages(
-        scope: KtElement,
-        oldToNewElementsMapping: Map<PsiElement, PsiElement>,
-        forcedRestore: Boolean = false
+    scope: KtElement,
+    oldToNewElementsMapping: Map<PsiElement, PsiElement>,
+    forcedRestore: Boolean = false
 ): List<UsageInfo> {
     return scope.collectDescendantsOfType<KtSimpleNameExpression>().mapNotNull {
         val usageInfo = it.internalUsageInfo
@@ -226,8 +216,8 @@ internal fun cleanUpInternalUsages(usages: Collection<UsageInfo>) {
 }
 
 class ImplicitCompanionAsDispatchReceiverUsageInfo(
-        callee: KtSimpleNameExpression,
-        val companionDescriptor: ClassDescriptor
+    callee: KtSimpleNameExpression,
+    val companionDescriptor: ClassDescriptor
 ) : UsageInfo(callee)
 
 interface KotlinMoveUsage {
@@ -237,25 +227,46 @@ interface KotlinMoveUsage {
 }
 
 class UnqualifiableMoveRenameUsageInfo(
-        element: PsiElement,
-        reference: PsiReference,
-        referencedElement: PsiElement,
-        val originalFile: PsiFile,
-        val addImportToOriginalFile: Boolean,
-        override val isInternal: Boolean
-): MoveRenameUsageInfo(element, reference, reference.rangeInElement.startOffset, reference.rangeInElement.endOffset, referencedElement, false), KotlinMoveUsage {
+    element: PsiElement,
+    reference: PsiReference,
+    referencedElement: PsiElement,
+    val originalFile: PsiFile,
+    val addImportToOriginalFile: Boolean,
+    override val isInternal: Boolean
+) : MoveRenameUsageInfo(
+    element,
+    reference,
+    reference.rangeInElement.startOffset,
+    reference.rangeInElement.endOffset,
+    referencedElement,
+    false
+), KotlinMoveUsage {
     override fun refresh(refExpr: KtSimpleNameExpression, referencedElement: PsiElement): UsageInfo? {
-        return UnqualifiableMoveRenameUsageInfo(refExpr, refExpr.mainReference, referencedElement, originalFile, addImportToOriginalFile, isInternal)
+        return UnqualifiableMoveRenameUsageInfo(
+            refExpr,
+            refExpr.mainReference,
+            referencedElement,
+            originalFile,
+            addImportToOriginalFile,
+            isInternal
+        )
     }
 }
 
 class QualifiableMoveRenameUsageInfo(
-        element: PsiElement,
-        reference: PsiReference,
-        referencedElement: PsiElement,
-        override val isInternal: Boolean
-): MoveRenameUsageInfo(element, reference, reference.rangeInElement.startOffset, reference.rangeInElement.endOffset, referencedElement, false),
-        KotlinMoveUsage {
+    element: PsiElement,
+    reference: PsiReference,
+    referencedElement: PsiElement,
+    override val isInternal: Boolean
+) : MoveRenameUsageInfo(
+    element,
+    reference,
+    reference.rangeInElement.startOffset,
+    reference.rangeInElement.endOffset,
+    referencedElement,
+    false
+),
+    KotlinMoveUsage {
     override fun refresh(refExpr: KtSimpleNameExpression, referencedElement: PsiElement): UsageInfo? {
         return QualifiableMoveRenameUsageInfo(refExpr, refExpr.mainReference, referencedElement, isInternal)
     }
@@ -272,9 +283,23 @@ class CallableReferenceMoveRenameUsageInfo(
     val originalFile: PsiFile,
     val addImportToOriginalFile: Boolean,
     override val isInternal: Boolean
-) : MoveRenameUsageInfo(element, reference, reference.rangeInElement.startOffset, reference.rangeInElement.endOffset, referencedElement, false), DeferredKotlinMoveUsage {
+) : MoveRenameUsageInfo(
+    element,
+    reference,
+    reference.rangeInElement.startOffset,
+    reference.rangeInElement.endOffset,
+    referencedElement,
+    false
+), DeferredKotlinMoveUsage {
     override fun refresh(refExpr: KtSimpleNameExpression, referencedElement: PsiElement): UsageInfo? {
-        return CallableReferenceMoveRenameUsageInfo(refExpr, refExpr.mainReference, referencedElement, originalFile, addImportToOriginalFile, isInternal)
+        return CallableReferenceMoveRenameUsageInfo(
+            refExpr,
+            refExpr.mainReference,
+            referencedElement,
+            originalFile,
+            addImportToOriginalFile,
+            isInternal
+        )
     }
 
     override fun resolve(newElement: PsiElement): UsageInfo? {
@@ -284,28 +309,35 @@ class CallableReferenceMoveRenameUsageInfo(
         val referencedElement = referencedElement ?: return null
         if (target != null && target.isTopLevelKtOrJavaMember()) {
             element.getStrictParentOfType<KtCallableReferenceExpression>()?.receiverExpression?.delete()
-            return UnqualifiableMoveRenameUsageInfo(element, reference, referencedElement, element.containingFile!!, addImportToOriginalFile, isInternal)
+            return UnqualifiableMoveRenameUsageInfo(
+                element,
+                reference,
+                referencedElement,
+                element.containingFile!!,
+                addImportToOriginalFile,
+                isInternal
+            )
         }
         return QualifiableMoveRenameUsageInfo(element, reference, referencedElement, isInternal)
     }
 }
 
 fun createMoveUsageInfoIfPossible(
-        reference: PsiReference,
-        referencedElement: PsiElement,
-        addImportToOriginalFile: Boolean,
-        isInternal: Boolean
+    reference: PsiReference,
+    referencedElement: PsiElement,
+    addImportToOriginalFile: Boolean,
+    isInternal: Boolean
 ): UsageInfo? {
     val element = reference.element
     return when (getReferenceKind(reference, referencedElement)) {
         ReferenceKind.QUALIFIABLE -> QualifiableMoveRenameUsageInfo(
-                element, reference, referencedElement, isInternal
+            element, reference, referencedElement, isInternal
         )
         ReferenceKind.UNQUALIFIABLE -> UnqualifiableMoveRenameUsageInfo(
-                element, reference, referencedElement, element.containingFile!!, addImportToOriginalFile, isInternal
+            element, reference, referencedElement, element.containingFile!!, addImportToOriginalFile, isInternal
         )
         ReferenceKind.CALLABLE_REFERENCE -> CallableReferenceMoveRenameUsageInfo(
-                element, reference, referencedElement, element.containingFile!!, addImportToOriginalFile, isInternal
+            element, reference, referencedElement, element.containingFile!!, addImportToOriginalFile, isInternal
         )
         else -> null
     }
@@ -349,14 +381,14 @@ private fun getReferenceKind(reference: PsiReference, referencedElement: PsiElem
 
 private fun isCallableReference(reference: PsiReference): Boolean {
     return reference is KtSimpleNameReference
-           && reference.element.getParentOfTypeAndBranch<KtCallableReferenceExpression> { callableReference } != null
+            && reference.element.getParentOfTypeAndBranch<KtCallableReferenceExpression> { callableReference } != null
 }
 
 fun guessNewFileName(declarationsToMove: Collection<KtNamedDeclaration>): String? {
     if (declarationsToMove.isEmpty()) return null
 
     val representative = declarationsToMove.singleOrNull()
-                         ?: declarationsToMove.filterIsInstance<KtClassOrObject>().singleOrNull()
+        ?: declarationsToMove.filterIsInstance<KtClassOrObject>().singleOrNull()
     representative?.let { return "${it.name}.${KotlinFileType.EXTENSION}" }
 
     return declarationsToMove.first().containingFile.name
@@ -384,7 +416,8 @@ private fun updateJavaReference(reference: PsiReferenceExpression, oldElement: P
         if (newClass != null && reference.qualifierExpression != null) {
             val mockMoveMembersOptions = MockMoveMembersOptions(newClass.qualifiedName, arrayOf(newElement))
             val moveMembersUsageInfo = MoveMembersProcessor.MoveMembersUsageInfo(
-                    newElement, reference.element, newClass, reference.qualifierExpression, reference)
+                newElement, reference.element, newClass, reference.qualifierExpression, reference
+            )
             val moveMemberHandler = MoveMemberHandler.EP_NAME.forLanguage(reference.element.language)
             if (moveMemberHandler != null) {
                 moveMemberHandler.changeExternalUsage(mockMoveMembersOptions, moveMembersUsageInfo)
@@ -398,10 +431,10 @@ private fun updateJavaReference(reference: PsiReferenceExpression, oldElement: P
 internal fun mapToNewOrThis(e: PsiElement, oldToNewElementsMapping: Map<PsiElement, PsiElement>) = oldToNewElementsMapping[e] ?: e
 
 private fun postProcessMoveUsage(
-        usage: UsageInfo,
-        oldToNewElementsMapping: Map<PsiElement, PsiElement>,
-        nonCodeUsages: ArrayList<NonCodeUsageInfo>,
-        shorteningMode: ShorteningMode
+    usage: UsageInfo,
+    oldToNewElementsMapping: Map<PsiElement, PsiElement>,
+    nonCodeUsages: ArrayList<NonCodeUsageInfo>,
+    shorteningMode: ShorteningMode
 ) {
     if (usage is NonCodeUsageInfo) {
         nonCodeUsages.add(usage)
@@ -415,12 +448,17 @@ private fun postProcessMoveUsage(
 
     when (usage) {
         is DeferredKotlinMoveUsage -> {
-            val newUsage = usage.resolve(newElement)  ?: return
+            val newUsage = usage.resolve(newElement) ?: return
             postProcessMoveUsage(newUsage, oldToNewElementsMapping, nonCodeUsages, shorteningMode)
         }
 
         is UnqualifiableMoveRenameUsageInfo -> {
-            val file = with(usage) { if (addImportToOriginalFile) originalFile else mapToNewOrThis(originalFile, oldToNewElementsMapping) } as KtFile
+            val file = with(usage) {
+                if (addImportToOriginalFile) originalFile else mapToNewOrThis(
+                    originalFile,
+                    oldToNewElementsMapping
+                )
+            } as KtFile
             addDelayedImportRequest(newElement, file)
         }
 
@@ -438,8 +476,7 @@ private fun processReference(reference: PsiReference?, newElement: PsiElement, s
             reference is PsiReferenceExpression && updateJavaReference(reference, oldElement, newElement) -> return
             else -> reference?.bindToElement(newElement)
         }
-    }
-    catch (e: IncorrectOperationException) {
+    } catch (e: IncorrectOperationException) {
         // Suppress exception if bindToElement is not implemented
     }
 }
@@ -448,31 +485,31 @@ private fun processReference(reference: PsiReference?, newElement: PsiElement, s
  * Perform usage postprocessing and return non-code usages
  */
 fun postProcessMoveUsages(
-        usages: Collection<UsageInfo>,
-        oldToNewElementsMapping: Map<PsiElement, PsiElement> = Collections.emptyMap(),
-        shorteningMode: ShorteningMode = ShorteningMode.DELAYED_SHORTENING
+    usages: Collection<UsageInfo>,
+    oldToNewElementsMapping: Map<PsiElement, PsiElement> = Collections.emptyMap(),
+    shorteningMode: ShorteningMode = ShorteningMode.DELAYED_SHORTENING
 ): List<NonCodeUsageInfo> {
-        val sortedUsages = usages.sortedWith(
-            Comparator<UsageInfo> { o1, o2 ->
-                val file1 = o1.virtualFile
-                val file2 = o2.virtualFile
-                if (Comparing.equal(file1, file2)) {
-                    val rangeInElement1 = o1.rangeInElement
-                    val rangeInElement2 = o2.rangeInElement
-                    if (rangeInElement1 != null && rangeInElement2 != null) {
-                        return@Comparator rangeInElement2.startOffset - rangeInElement1.startOffset
-                    }
-                    return@Comparator 0
+    val sortedUsages = usages.sortedWith(
+        Comparator { o1, o2 ->
+            val file1 = o1.virtualFile
+            val file2 = o2.virtualFile
+            if (Comparing.equal(file1, file2)) {
+                val rangeInElement1 = o1.rangeInElement
+                val rangeInElement2 = o2.rangeInElement
+                if (rangeInElement1 != null && rangeInElement2 != null) {
+                    return@Comparator rangeInElement2.startOffset - rangeInElement1.startOffset
                 }
-                if (file1 == null) return@Comparator -1
-                if (file2 == null) return@Comparator 1
-                Comparing.compare(file1.path, file2.path)
+                return@Comparator 0
             }
+            if (file1 == null) return@Comparator -1
+            if (file2 == null) return@Comparator 1
+            Comparing.compare(file1.path, file2.path)
+        }
     )
 
     val nonCodeUsages = ArrayList<NonCodeUsageInfo>()
 
-    val progressStep = 1.0/sortedUsages.size
+    val progressStep = 1.0 / sortedUsages.size
     val progressIndicator = ProgressManager.getInstance().progressIndicator
     progressIndicator?.text = "Updating usages..."
     usageLoop@ for ((i, usage) in sortedUsages.withIndex()) {
@@ -499,17 +536,17 @@ sealed class OuterInstanceReferenceUsageInfo(element: PsiElement, private val is
     }
 
     class ExplicitThis(
-            expression: KtThisExpression,
-            isIndirectOuter: Boolean
+        expression: KtThisExpression,
+        isIndirectOuter: Boolean
     ) : OuterInstanceReferenceUsageInfo(expression, isIndirectOuter) {
         val expression: KtThisExpression?
             get() = element as? KtThisExpression
     }
 
     class ImplicitReceiver(
-            callElement: KtElement,
-            isIndirectOuter: Boolean,
-            private val isDoubleReceiver: Boolean
+        callElement: KtElement,
+        isIndirectOuter: Boolean,
+        private val isDoubleReceiver: Boolean
     ) : OuterInstanceReferenceUsageInfo(callElement, isIndirectOuter) {
         val callElement: KtElement?
             get() = element as? KtElement
@@ -535,7 +572,11 @@ sealed class OuterInstanceReferenceUsageInfo(element: PsiElement, private val is
 }
 
 @JvmOverloads
-fun traverseOuterInstanceReferences(member: KtNamedDeclaration, stopAtFirst: Boolean, body: (OuterInstanceReferenceUsageInfo) -> Unit = {}): Boolean {
+fun traverseOuterInstanceReferences(
+    member: KtNamedDeclaration,
+    stopAtFirst: Boolean,
+    body: (OuterInstanceReferenceUsageInfo) -> Unit = {}
+): Boolean {
     if (member is KtObjectDeclaration || member is KtClass && !member.isInner()) return false
 
     val context = member.analyzeWithContent()
@@ -543,53 +584,53 @@ fun traverseOuterInstanceReferences(member: KtNamedDeclaration, stopAtFirst: Boo
     val outerClassDescriptor = containingClassOrObject.unsafeResolveToDescriptor() as ClassDescriptor
     var found = false
     member.accept(
-            object : PsiRecursiveElementWalkingVisitor() {
-                private fun getOuterInstanceReference(element: PsiElement): OuterInstanceReferenceUsageInfo? {
-                    return when (element) {
-                        is KtThisExpression -> {
-                            val descriptor = context[BindingContext.REFERENCE_TARGET, element.instanceReference]
-                            val isIndirect = when {
-                                descriptor == outerClassDescriptor -> false
-                                descriptor?.isAncestorOf(outerClassDescriptor, true) ?: false -> true
-                                else -> return null
-                            }
-                            OuterInstanceReferenceUsageInfo.ExplicitThis(element, isIndirect)
+        object : PsiRecursiveElementWalkingVisitor() {
+            private fun getOuterInstanceReference(element: PsiElement): OuterInstanceReferenceUsageInfo? {
+                return when (element) {
+                    is KtThisExpression -> {
+                        val descriptor = context[BindingContext.REFERENCE_TARGET, element.instanceReference]
+                        val isIndirect = when {
+                            descriptor == outerClassDescriptor -> false
+                            descriptor?.isAncestorOf(outerClassDescriptor, true) ?: false -> true
+                            else -> return null
                         }
-                        is KtSimpleNameExpression -> {
-                            val resolvedCall = element.getResolvedCall(context) ?: return null
-                            val dispatchReceiver = resolvedCall.dispatchReceiver as? ImplicitReceiver
-                            val extensionReceiver = resolvedCall.extensionReceiver as? ImplicitReceiver
-                            var isIndirect = false
-                            val isDoubleReceiver = when (outerClassDescriptor) {
-                                dispatchReceiver?.declarationDescriptor -> extensionReceiver != null
-                                extensionReceiver?.declarationDescriptor -> dispatchReceiver != null
-                                else -> {
-                                    isIndirect = true
-                                    when {
-                                        dispatchReceiver?.declarationDescriptor?.isAncestorOf(outerClassDescriptor, true) ?: false ->
-                                            extensionReceiver != null
-                                        extensionReceiver?.declarationDescriptor?.isAncestorOf(outerClassDescriptor, true) ?: false ->
-                                            dispatchReceiver != null
-                                        else -> return null
-                                    }
+                        OuterInstanceReferenceUsageInfo.ExplicitThis(element, isIndirect)
+                    }
+                    is KtSimpleNameExpression -> {
+                        val resolvedCall = element.getResolvedCall(context) ?: return null
+                        val dispatchReceiver = resolvedCall.dispatchReceiver as? ImplicitReceiver
+                        val extensionReceiver = resolvedCall.extensionReceiver as? ImplicitReceiver
+                        var isIndirect = false
+                        val isDoubleReceiver = when (outerClassDescriptor) {
+                            dispatchReceiver?.declarationDescriptor -> extensionReceiver != null
+                            extensionReceiver?.declarationDescriptor -> dispatchReceiver != null
+                            else -> {
+                                isIndirect = true
+                                when {
+                                    dispatchReceiver?.declarationDescriptor?.isAncestorOf(outerClassDescriptor, true) ?: false ->
+                                        extensionReceiver != null
+                                    extensionReceiver?.declarationDescriptor?.isAncestorOf(outerClassDescriptor, true) ?: false ->
+                                        dispatchReceiver != null
+                                    else -> return null
                                 }
                             }
-                            OuterInstanceReferenceUsageInfo.ImplicitReceiver(resolvedCall.call.callElement, isIndirect, isDoubleReceiver)
                         }
-                        else -> null
+                        OuterInstanceReferenceUsageInfo.ImplicitReceiver(resolvedCall.call.callElement, isIndirect, isDoubleReceiver)
                     }
-                }
-
-                override fun visitElement(element: PsiElement) {
-                    getOuterInstanceReference(element)?.let {
-                        body(it)
-                        found = true
-                        if (stopAtFirst) stopWalking()
-                        return
-                    }
-                    super.visitElement(element)
+                    else -> null
                 }
             }
+
+            override fun visitElement(element: PsiElement) {
+                getOuterInstanceReference(element)?.let {
+                    body(it)
+                    found = true
+                    if (stopAtFirst) stopWalking()
+                    return
+                }
+                super.visitElement(element)
+            }
+        }
     )
     return found
 }

idea/tests/org/jetbrains/kotlin/idea/refactoring/move/AbstractMoveTest.kt

@@ -24,10 +24,12 @@ import org.jetbrains.kotlin.idea.core.util.toPsiDirectory
 import org.jetbrains.kotlin.idea.core.util.toPsiFile
 import org.jetbrains.kotlin.idea.jsonUtils.getNullableString
 import org.jetbrains.kotlin.idea.jsonUtils.getString
-import org.jetbrains.kotlin.idea.refactoring.*
+import org.jetbrains.kotlin.idea.refactoring.AbstractMultifileRefactoringTest
+import org.jetbrains.kotlin.idea.refactoring.createKotlinFile
 import org.jetbrains.kotlin.idea.refactoring.move.changePackage.KotlinChangePackageRefactoring
 import org.jetbrains.kotlin.idea.refactoring.move.moveClassesOrPackages.KotlinAwareDelegatingMoveDestination
 import org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.*
+import org.jetbrains.kotlin.idea.refactoring.runRefactoringTest
 import org.jetbrains.kotlin.idea.search.allScope
 import org.jetbrains.kotlin.idea.search.projectScope
 import org.jetbrains.kotlin.idea.stubindex.KotlinFullClassNameIndex
@@ -69,12 +71,12 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val targetPackage = config.getString("targetPackage")
 
             MoveClassesOrPackagesProcessor(
-                    mainFile.project,
-                    classesToMove.toTypedArray(),
-                    MultipleRootsMoveDestination(PackageWrapper(mainFile.manager, targetPackage)),
-                    /* searchInComments = */ false,
-                    /* searchInNonJavaFiles = */ true,
-                    /* moveCallback = */ null
+                mainFile.project,
+                classesToMove.toTypedArray(),
+                MultipleRootsMoveDestination(PackageWrapper(mainFile.manager, targetPackage)),
+                /* searchInComments = */ false,
+                /* searchInNonJavaFiles = */ true,
+                /* moveCallback = */ null
             ).run()
         }
     },
@@ -93,22 +95,21 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val moveDestination = if (targetDirectory != null) {
                 val targetSourceRoot = ProjectRootManager.getInstance(project).fileIndex.getSourceRootForFile(targetDirectory.virtualFile)!!
                 KotlinAwareDelegatingMoveDestination(
-                        AutocreatingSingleSourceRootMoveDestination(targetPackageWrapper, targetSourceRoot),
-                        targetPackage,
-                        targetDirectory
+                    AutocreatingSingleSourceRootMoveDestination(targetPackageWrapper, targetSourceRoot),
+                    targetPackage,
+                    targetDirectory
                 )
-            }
-            else {
+            } else {
                 MultipleRootsMoveDestination(targetPackageWrapper)
             }
 
             MoveClassesOrPackagesProcessor(
-                    project,
-                    arrayOf(sourcePackage),
-                    moveDestination,
-                    /* searchInComments = */ false,
-                    /* searchInNonJavaFiles = */ true,
-                    /* moveCallback = */ null
+                project,
+                arrayOf(sourcePackage),
+                moveDestination,
+                /* searchInComments = */ false,
+                /* searchInNonJavaFiles = */ true,
+                /* moveCallback = */ null
             ).run()
         }
     },
@@ -121,12 +122,12 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val targetClass = config.getString("targetClass")
 
             MoveClassToInnerProcessor(
-                    project,
-                    classesToMove.toTypedArray(),
-                    JavaPsiFacade.getInstance(project).findClass(targetClass, project.allScope())!!,
-                    /* searchInComments = */ false,
-                    /* searchInNonJavaFiles = */ true,
-                    /* moveCallback = */ null
+                project,
+                classesToMove.toTypedArray(),
+                JavaPsiFacade.getInstance(project).findClass(targetClass, project.allScope())!!,
+                /* searchInComments = */ false,
+                /* searchInNonJavaFiles = */ true,
+                /* moveCallback = */ null
             ).run()
         }
     },
@@ -141,12 +142,12 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val targetPackage = config.getString("targetPackage")
 
             MoveInnerProcessor(
-                    project,
-                    classToMove,
-                    newClassName,
-                    outerInstanceParameterName != null,
-                    outerInstanceParameterName,
-                    JavaPsiFacade.getInstance(project).findPackage(targetPackage)!!.directories[0]
+                project,
+                classToMove,
+                newClassName,
+                outerInstanceParameterName != null,
+                outerInstanceParameterName,
+                JavaPsiFacade.getInstance(project).findPackage(targetPackage)!!.directories[0]
             ).run()
         }
     },
@@ -161,29 +162,27 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
                 ActionRunner.runInsideWriteAction { VfsUtil.createDirectoryIfMissing(rootDir, targetDirPath) }
                 val newParent = if (targetPackage != null) {
                     JavaPsiFacade.getInstance(project).findPackage(targetPackage)!!.directories[0]
-                }
-                else {
+                } else {
                     rootDir.findFileByRelativePath(targetDirPath)!!.toPsiDirectory(project)!!
                 }
                 MoveFilesOrDirectoriesProcessor(
-                        project,
-                        arrayOf(mainFile),
-                        newParent,
-                        /* searchInComments = */ false,
-                        /* searchInNonJavaFiles = */ true,
-                        /* moveCallback = */ null,
-                        /* prepareSuccessfulCallback = */ null
+                    project,
+                    arrayOf(mainFile),
+                    newParent,
+                    /* searchInComments = */ false,
+                    /* searchInNonJavaFiles = */ true,
+                    /* moveCallback = */ null,
+                    /* prepareSuccessfulCallback = */ null
                 ).run()
-            }
-            else {
+            } else {
                 val targetFile = config.getString("targetFile")
 
                 MoveHandler.doMove(
-                        project,
-                        arrayOf(mainFile),
-                        PsiManager.getInstance(project).findFile(rootDir.findFileByRelativePath(targetFile)!!)!!,
-                        /* dataContext = */ null,
-                        /* callback = */ null
+                    project,
+                    arrayOf(mainFile),
+                    PsiManager.getInstance(project).findFile(rootDir.findFileByRelativePath(targetFile)!!)!!,
+                    /* dataContext = */ null,
+                    /* callback = */ null
                 )
             }
         }
@@ -199,13 +198,13 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val targetDirPath = config.getString("targetDirectory")
             val targetDir = rootDir.findFileByRelativePath(targetDirPath)!!.toPsiDirectory(project)!!
             KotlinAwareMoveFilesOrDirectoriesProcessor(
-                    project,
-                    elementsToMove,
-                    targetDir,
-                    true,
-                    searchInComments = true,
-                    searchInNonJavaFiles = true,
-                    moveCallback = null
+                project,
+                elementsToMove,
+                targetDir,
+                true,
+                searchInComments = true,
+                searchInNonJavaFiles = true,
+                moveCallback = null
             ).run()
         }
     },
@@ -251,7 +250,7 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val project = mainFile.project
             val sourceDir = rootDir.findFileByRelativePath(config.getString("sourceDir"))!!.toPsiDirectory(project)!!
             val targetDir = rootDir.findFileByRelativePath(config.getString("targetDir"))!!.toPsiDirectory(project)!!
-            MoveDirectoryWithClassesProcessor(project, arrayOf(sourceDir), targetDir, true, true, true, {}).run()
+            MoveDirectoryWithClassesProcessor(project, arrayOf(sourceDir), targetDir, true, true, true) {}.run()
         }
     },
 
@@ -261,24 +260,24 @@ enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
             val elementToMove = elementsAtCaret.single().getNonStrictParentOfType<KtClassOrObject>()!!
             val targetClassName = config.getNullableString("targetClass")
             val targetClass =
-                    if (targetClassName != null) {
-                        KotlinFullClassNameIndex.getInstance().get(targetClassName, project, project.projectScope()).first()!!
-                    }
-                    else null
-            val delegate = MoveDeclarationsDelegate.NestedClass(config.getNullableString("newName"),
-                                                                config.getNullableString("outerInstanceParameter"))
+                if (targetClassName != null) {
+                    KotlinFullClassNameIndex.getInstance().get(targetClassName, project, project.projectScope()).first()!!
+                } else null
+            val delegate = MoveDeclarationsDelegate.NestedClass(
+                config.getNullableString("newName"),
+                config.getNullableString("outerInstanceParameter")
+            )
             val moveTarget =
-                    if (targetClass != null) {
-                        KotlinMoveTargetForExistingElement(targetClass)
-                    }
-                    else {
-                        val fileName = (delegate.newClassName ?: elementToMove.name!!) + ".kt"
-                        val targetPackageFqName = (mainFile as KtFile).packageFqName
-                        val targetDir = mainFile.containingDirectory!!
-                        KotlinMoveTargetForDeferredFile(targetPackageFqName, targetDir, null) {
-                            createKotlinFile(fileName, targetDir, targetPackageFqName.asString())
-                        }
+                if (targetClass != null) {
+                    KotlinMoveTargetForExistingElement(targetClass)
+                } else {
+                    val fileName = (delegate.newClassName ?: elementToMove.name!!) + ".kt"
+                    val targetPackageFqName = (mainFile as KtFile).packageFqName
+                    val targetDir = mainFile.containingDirectory!!
+                    KotlinMoveTargetForDeferredFile(targetPackageFqName, targetDir, null) {
+                        createKotlinFile(fileName, targetDir, targetPackageFqName.asString())
                     }
+                }
             val descriptor = MoveDeclarationsDescriptor(project, MoveSource(elementToMove), moveTarget, delegate)
             MoveKotlinDeclarationsProcessor(descriptor).run()
         }