Push Down: Initial Support

generators/src/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -84,6 +84,7 @@ import org.jetbrains.kotlin.idea.refactoring.inline.AbstractInlineTest
 import org.jetbrains.kotlin.idea.refactoring.introduce.AbstractJetExtractionTest
 import org.jetbrains.kotlin.idea.refactoring.move.AbstractJetMoveTest
 import org.jetbrains.kotlin.idea.refactoring.pullUp.AbstractPullUpTest
+import org.jetbrains.kotlin.idea.refactoring.pushDown.AbstractPushDownTest
 import org.jetbrains.kotlin.idea.refactoring.rename.AbstractRenameTest
 import org.jetbrains.kotlin.idea.resolve.*
 import org.jetbrains.kotlin.idea.structureView.AbstractKotlinFileStructureTest
@@ -664,6 +665,10 @@ fun main(args: Array<String>) {
             model("refactoring/pullUp/j2k", extension = "java", singleClass = true, testClassName = "J2K", testMethod = "doJavaTest")
         }
 
+        testClass(javaClass<AbstractPushDownTest>()) {
+            model("refactoring/pushDown", extension = "kt", singleClass = true)
+        }
+
         testClass(javaClass<AbstractSelectExpressionForDebuggerTest>()) {
             model("debugger/selectExpression", recursive = false)
             model("debugger/selectExpression/disallowMethodCalls", testMethod = "doTestWoMethodCalls")

idea/ide-common/src/org/jetbrains/kotlin/util/descriptorUtils.kt

@@ -62,6 +62,7 @@ public fun ClassDescriptor.findCallableMemberBySignature(signature: CallableMemb
     val descriptorKind = if (signature is FunctionDescriptor) DescriptorKindFilter.FUNCTIONS else DescriptorKindFilter.VARIABLES
     return getDefaultType().getMemberScope()
             .getDescriptors(descriptorKind)
+            .filterIsInstance<CallableMemberDescriptor>()
             .firstOrNull {
                 it.getContainingDeclaration() == this
                 && OverridingUtil.DEFAULT.isOverridableBy(it as CallableDescriptor, signature).getResult() == OVERRIDABLE

idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/declarationsSearch/classInheritorsSearch.kt

@@ -26,7 +26,7 @@ import com.intellij.psi.PsiElement
 import com.intellij.psi.search.searches.ClassInheritorsSearch
 import com.intellij.util.EmptyQuery
 
-public fun HierarchySearchRequest<PsiElement>.searchInheritors(): Query<PsiClass> {
+public fun HierarchySearchRequest<*>.searchInheritors(): Query<PsiClass> {
     val psiClass: PsiClass? = when (originalElement) {
         is JetClassOrObject -> LightClassUtil.getPsiClass(originalElement)
         is PsiClass -> originalElement

idea/src/org/jetbrains/kotlin/idea/refactoring/AbstractPullPushMembersHandler.kt

@@ -0,0 +1,103 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring
+
+import com.intellij.openapi.actionSystem.CommonDataKeys
+import com.intellij.openapi.actionSystem.DataContext
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.ScrollType
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.refactoring.RefactoringActionHandler
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.lang.ElementsHandler
+import com.intellij.refactoring.util.CommonRefactoringUtil
+import org.jetbrains.kotlin.idea.core.refactoring.canRefactor
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
+import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
+import java.util.HashSet
+
+public abstract class AbstractPullPushMembersHandler(
+        private val refactoringName: String,
+        private val helpId: String,
+        private  val wrongPositionMessage: String
+) : RefactoringActionHandler, ElementsHandler {
+    private fun reportWrongPosition(project: Project, editor: Editor?) {
+        val message = RefactoringBundle.getCannotRefactorMessage(wrongPositionMessage)
+        CommonRefactoringUtil.showErrorHint(project, editor, message, refactoringName, helpId)
+    }
+
+    protected fun reportWrongContext(project: Project, editor: Editor?) {
+        val message = RefactoringBundle.getCannotRefactorMessage(
+                RefactoringBundle.message("is.not.supported.in.the.current.context", refactoringName)
+        )
+        CommonRefactoringUtil.showErrorHint(project, editor, message, refactoringName, helpId)
+    }
+
+    protected abstract fun invoke(project: Project,
+                                  editor: Editor?,
+                                  classOrObject: JetClassOrObject?,
+                                  member: JetNamedDeclaration?,
+                                  dataContext: DataContext?)
+
+    override fun invoke(project: Project, editor: Editor, file: PsiFile, dataContext: DataContext?) {
+        val offset = editor.caretModel.offset
+        editor.scrollingModel.scrollToCaret(ScrollType.MAKE_VISIBLE)
+
+        val target = (file.findElementAt(offset) ?: return).parentsWithSelf.firstOrNull {
+            it is JetClassOrObject || ((it is JetNamedFunction || it is JetProperty) && it.parent is JetClassBody)
+        }
+
+        if (target == null) {
+            reportWrongPosition(project, editor)
+            return
+        }
+        if (!target.canRefactor()) return
+
+        invoke(project, arrayOf(target), dataContext)
+    }
+
+    override fun invoke(project: Project, elements: Array<out PsiElement>, dataContext: DataContext?) {
+        val element = elements.singleOrNull() ?: return
+
+        val editor = dataContext?.let { CommonDataKeys.EDITOR.getData(it) }
+
+        val (classOrObject, member) = when (element) {
+            is JetNamedFunction, is JetProperty -> element.getStrictParentOfType<JetClassOrObject>() to element as JetNamedDeclaration?
+            is JetClassOrObject -> element to null
+            else -> {
+                reportWrongPosition(project, editor)
+                return
+            }
+        }
+
+        invoke(project, editor, classOrObject, member, dataContext)
+    }
+
+    override fun isEnabledOnElements(elements: Array<out PsiElement>): Boolean {
+        return elements.mapTo(HashSet<PsiElement>()) {
+            when (it) {
+                is JetNamedFunction, is JetProperty ->
+                    (it.parent as? JetClassBody)?.parent as? JetClassOrObject
+                is JetClassOrObject -> it
+                else -> null
+            } ?: return false
+        }.size() == 1
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/KotlinRefactoringSupportProvider.kt

@@ -27,6 +27,7 @@ import org.jetbrains.kotlin.idea.refactoring.introduce.introduceParameter.Kotlin
 import org.jetbrains.kotlin.idea.refactoring.introduce.introduceProperty.KotlinIntroducePropertyHandler
 import org.jetbrains.kotlin.idea.refactoring.introduce.introduceVariable.KotlinIntroduceVariableHandler
 import org.jetbrains.kotlin.idea.refactoring.pullUp.KotlinPullUpHandler
+import org.jetbrains.kotlin.idea.refactoring.pushDown.KotlinPushDownHandler
 import org.jetbrains.kotlin.idea.refactoring.safeDelete.*
 import org.jetbrains.kotlin.psi.*
 
@@ -73,4 +74,6 @@ public class KotlinRefactoringSupportProvider : RefactoringSupportProvider() {
     override fun getChangeSignatureHandler() = JetChangeSignatureHandler()
 
     override fun getPullUpHandler() = KotlinPullUpHandler()
+
+    override fun getPushDownHandler() = KotlinPushDownHandler()
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/pullUp/KotlinPullUpHandler.kt

@@ -16,37 +16,36 @@
 
 package org.jetbrains.kotlin.idea.refactoring.pullUp
 
-import com.intellij.openapi.actionSystem.CommonDataKeys
 import com.intellij.openapi.actionSystem.DataContext
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.editor.Editor
-import com.intellij.openapi.editor.ScrollType
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiClass
-import com.intellij.psi.PsiElement
-import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiNamedElement
 import com.intellij.refactoring.HelpID
-import com.intellij.refactoring.RefactoringActionHandler
 import com.intellij.refactoring.RefactoringBundle
-import com.intellij.refactoring.lang.ElementsHandler
 import com.intellij.refactoring.util.CommonRefactoringUtil
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptor
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
 import org.jetbrains.kotlin.idea.core.refactoring.canRefactor
+import org.jetbrains.kotlin.idea.refactoring.AbstractPullPushMembersHandler
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfoStorage
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.qualifiedClassNameForRendering
-import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.JetClass
+import org.jetbrains.kotlin.psi.JetClassOrObject
+import org.jetbrains.kotlin.psi.JetNamedDeclaration
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
-import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
 import org.jetbrains.kotlin.types.typeUtil.supertypes
-import java.util.HashSet
 
-public class KotlinPullUpHandler : RefactoringActionHandler, ElementsHandler {
+public class KotlinPullUpHandler : AbstractPullPushMembersHandler(
+        refactoringName = PULL_MEMBERS_UP,
+        helpId = HelpID.MEMBERS_PULL_UP,
+        wrongPositionMessage = RefactoringBundle.message("the.caret.should.be.positioned.inside.a.class.to.pull.members.from")
+) {
     companion object {
-        val PULLUP_TEST_HELPER_KEY = "PULLUP_TEST_HELPER_KEY"
+        val PULL_UP_TEST_HELPER_KEY = "PULL_UP_TEST_HELPER_KEY"
     }
 
     interface TestHelper {
@@ -54,20 +53,6 @@ public class KotlinPullUpHandler : RefactoringActionHandler, ElementsHandler {
         fun chooseSuperClass(superClasses: List<PsiNamedElement>): PsiNamedElement
     }
 
-    private fun reportWrongPosition(project: Project, editor: Editor?) {
-        val message = RefactoringBundle.getCannotRefactorMessage(
-                RefactoringBundle.message("the.caret.should.be.positioned.inside.a.class.to.pull.members.from")
-        )
-        CommonRefactoringUtil.showErrorHint(project, editor, message, PULL_MEMBERS_UP, "refactoring.pullMembersUp")
-    }
-
-    private fun reportWrongContext(project: Project, editor: Editor?) {
-        val message = RefactoringBundle.getCannotRefactorMessage(
-                RefactoringBundle.message("is.not.supported.in.the.current.context", PULL_MEMBERS_UP)
-        )
-        CommonRefactoringUtil.showErrorHint(project, editor, message, PULL_MEMBERS_UP, HelpID.MEMBERS_PULL_UP)
-    }
-
     private fun reportNoSuperClasses(project: Project, editor: Editor?, classOrObject: JetClassOrObject) {
         val message = RefactoringBundle.getCannotRefactorMessage(
                 RefactoringBundle.message("class.does.not.have.base.classes.interfaces.in.current.project",
@@ -76,41 +61,7 @@ public class KotlinPullUpHandler : RefactoringActionHandler, ElementsHandler {
         CommonRefactoringUtil.showErrorHint(project, editor, message, PULL_MEMBERS_UP, HelpID.MEMBERS_PULL_UP)
     }
 
-    override fun invoke(project: Project, editor: Editor, file: PsiFile, dataContext: DataContext?) {
-        val offset = editor.caretModel.offset
-        editor.scrollingModel.scrollToCaret(ScrollType.MAKE_VISIBLE)
-
-        val target = (file.findElementAt(offset) ?: return).parentsWithSelf.firstOrNull {
-            it is JetClassOrObject || ((it is JetNamedFunction || it is JetProperty) && it.parent is JetClassBody)
-        }
-
-        if (target == null) {
-            reportWrongPosition(project, editor)
-            return
-        }
-        if (!target.canRefactor()) return
-
-        invoke(project, arrayOf(target), dataContext)
-    }
-
-    override fun invoke(project: Project, elements: Array<out PsiElement>, dataContext: DataContext?) {
-        val element = elements.singleOrNull() ?: return
-
-        val editor = dataContext?.let { CommonDataKeys.EDITOR.getData(it) }
-
-        val (classOrObject, member) = when (element) {
-            is JetNamedFunction, is JetProperty -> element.getStrictParentOfType<JetClassOrObject>() to element as JetNamedDeclaration?
-            is JetClassOrObject -> element to null
-            else -> {
-                reportWrongPosition(project, editor)
-                return
-            }
-        }
-
-        invoke(project, editor, classOrObject, member, dataContext)
-    }
-
-    private fun invoke(project: Project,
+    override fun invoke(project: Project,
                        editor: Editor?,
                        classOrObject: JetClassOrObject?,
                        member: JetNamedDeclaration?,
@@ -148,7 +99,7 @@ public class KotlinPullUpHandler : RefactoringActionHandler, ElementsHandler {
         val members = memberInfoStorage.getClassMemberInfos(classOrObject)
 
         if (ApplicationManager.getApplication().isUnitTestMode) {
-            val helper = dataContext?.getData(PULLUP_TEST_HELPER_KEY) as TestHelper
+            val helper = dataContext?.getData(PULL_UP_TEST_HELPER_KEY) as TestHelper
             val selectedMembers = helper.adjustMembers(members)
             val targetClass = helper.chooseSuperClass(superClasses)
             checkConflicts(project, classOrObject, targetClass, selectedMembers) {
@@ -162,17 +113,6 @@ public class KotlinPullUpHandler : RefactoringActionHandler, ElementsHandler {
             KotlinPullUpDialog(project, classOrObject, superClasses, memberInfoStorage).show()
         }
     }
-
-    override fun isEnabledOnElements(elements: Array<out PsiElement>): Boolean {
-        return elements.mapTo(HashSet<PsiElement>()) {
-            when (it) {
-                is JetNamedFunction, is JetProperty ->
-                    (it.parent as? JetClassBody)?.parent as? JetClassOrObject
-                is JetClassOrObject -> it
-                else -> null
-            } ?: return false
-        }.size() == 1
-    }
 }
 
 val PULL_MEMBERS_UP = "Pull Members Up"

idea/src/org/jetbrains/kotlin/idea/refactoring/pullUp/KotlinPullUpHelper.kt

@@ -16,7 +16,6 @@
 
 package org.jetbrains.kotlin.idea.refactoring.pullUp
 
-import com.intellij.openapi.util.Key
 import com.intellij.psi.*
 import com.intellij.psi.codeStyle.JavaCodeStyleManager
 import com.intellij.psi.impl.light.LightField
@@ -31,30 +30,25 @@ import org.jetbrains.kotlin.asJava.getRepresentativeLightMethod
 import org.jetbrains.kotlin.asJava.namedUnwrappedElement
 import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.asJava.unwrapped
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.idea.JetLanguage
 import org.jetbrains.kotlin.idea.codeInsight.shorten.addToShorteningWaitSet
 import org.jetbrains.kotlin.idea.core.refactoring.createJavaField
 import org.jetbrains.kotlin.idea.core.refactoring.createJavaMethod
-import org.jetbrains.kotlin.idea.imports.importableFqName
 import org.jetbrains.kotlin.idea.refactoring.safeDelete.removeOverrideModifier
-import org.jetbrains.kotlin.idea.references.mainReference
-import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
-import org.jetbrains.kotlin.idea.util.ShortenReferences
 import org.jetbrains.kotlin.idea.util.psi.patternMatching.JetPsiUnifier
 import org.jetbrains.kotlin.lexer.JetTokens
-import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.psiUtil.*
+import org.jetbrains.kotlin.psi.psiUtil.allChildren
+import org.jetbrains.kotlin.psi.psiUtil.asAssignment
+import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
+import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
 import org.jetbrains.kotlin.resolve.calls.resolvedCallUtil.getExplicitReceiverValue
 import org.jetbrains.kotlin.resolve.scopes.receivers.ExpressionReceiver
 import org.jetbrains.kotlin.resolve.source.getPsi
-import org.jetbrains.kotlin.types.Variance
-import org.jetbrains.kotlin.types.typeUtil.isUnit
 import java.util.ArrayList
 import java.util.Comparator
 import java.util.LinkedHashMap
@@ -64,12 +58,6 @@ class KotlinPullUpHelper(
         private val javaData: PullUpData,
         private val data: KotlinPullUpData
 ) : PullUpHelper<MemberInfoBase<PsiMember>> {
-    companion object {
-        private var JetElement.newFqName: FqName? by CopyableUserDataProperty(Key.create("NEW_FQ_NAME"))
-        private var JetElement.replaceWithTargetThis: Boolean? by CopyableUserDataProperty(Key.create("REPLACE_WITH_TARGET_THIS"))
-        private var JetElement.newTypeText: String? by CopyableUserDataProperty(Key.create("NEW_TYPE_TEXT"))
-    }
-
     private fun JetExpression.isMovable(): Boolean {
         return accept(
                 object: JetVisitor<Boolean, Nothing?>() {
@@ -334,184 +322,13 @@ class KotlinPullUpHelper(
         return clashingSuperDescriptor.source.getPsi() as? JetCallableDeclaration
     }
 
-    private fun makeAbstract(sourceMember: JetCallableDeclaration, targetMember: JetCallableDeclaration) {
-        if (!data.isInterfaceTarget) {
-            targetMember.addModifierWithSpace(JetTokens.ABSTRACT_KEYWORD)
-        }
-
-        if (sourceMember.typeReference == null) {
-            var type = (data.memberDescriptors[sourceMember] as CallableMemberDescriptor).returnType
-            if (type == null || type.isError) {
-                type = KotlinBuiltIns.getInstance().nullableAnyType
-            }
-            else {
-                type = data.sourceToTargetClassSubstitutor.substitute(type, Variance.INVARIANT)
-                       ?: KotlinBuiltIns.getInstance().nullableAnyType
-            }
-
-            if (sourceMember is JetProperty || !type.isUnit()) {
-                val typeRef = JetPsiFactory(sourceMember).createType(IdeDescriptorRenderers.SOURCE_CODE.renderType(type))
-                targetMember.setTypeReference(typeRef)
-            }
-        }
-
-        val deleteFrom = when (sourceMember) {
-            is JetProperty -> {
-                targetMember as JetProperty
-                val accessors = targetMember.accessors
-                targetMember.equalsToken ?: targetMember.delegate ?: accessors.firstOrNull()
-            }
-
-            is JetNamedFunction -> {
-                targetMember as JetNamedFunction
-                targetMember.equalsToken ?: targetMember.bodyExpression
-            }
-
-            else -> null
-        }
-
-        if (deleteFrom != null) {
-            targetMember.deleteChildRange(deleteFrom, targetMember.lastChild)
-        }
-    }
-
-    private fun markElements(member: JetNamedDeclaration): List<JetElement> {
-        val affectedElements = ArrayList<JetElement>()
-
-        member.accept(
-                object: JetVisitorVoid() {
-                    private fun visitSuperOrThis(expression: JetInstanceExpressionWithLabel) {
-                        val referenceTarget = data.sourceClassContext[BindingContext.REFERENCE_TARGET, expression.instanceReference]
-                        if (referenceTarget == data.targetClassDescriptor) {
-                            expression.replaceWithTargetThis = true
-                            affectedElements.add(expression)
-                        }
-                    }
-
-                    override fun visitElement(element: PsiElement) {
-                        element.allChildren.forEach { it.accept(this) }
-                    }
-
-                    override fun visitSimpleNameExpression(expression: JetSimpleNameExpression) {
-                        val resolvedCall = expression.getResolvedCall(data.sourceClassContext) ?: return
-                        var receiver = resolvedCall.getExplicitReceiverValue()
-                        if (!receiver.exists()) {
-                            receiver = resolvedCall.extensionReceiver
-                        }
-                        if (!receiver.exists()) {
-                            receiver = resolvedCall.dispatchReceiver
-                        }
-                        if (!receiver.exists()) return
-
-                        val implicitThis = receiver.type.constructor.declarationDescriptor as? ClassDescriptor ?: return
-                        if (implicitThis.isCompanionObject
-                            && DescriptorUtils.isAncestor(data.sourceClassDescriptor, implicitThis, true)) {
-                            val qualifierFqName = implicitThis.importableFqName ?: return
-
-                            expression.newFqName = FqName("${qualifierFqName.asString()}.${expression.getReferencedName()}")
-                            affectedElements.add(expression)
-                        }
-                    }
-
-                    override fun visitThisExpression(expression: JetThisExpression) {
-                        visitSuperOrThis(expression)
-                    }
-
-                    override fun visitSuperExpression(expression: JetSuperExpression) {
-                        visitSuperOrThis(expression)
-                    }
-
-                    override fun visitTypeReference(typeReference: JetTypeReference) {
-                        val oldType = data.sourceClassContext[BindingContext.TYPE, typeReference] ?: return
-                        val newType = data.sourceToTargetClassSubstitutor.substitute(oldType, Variance.INVARIANT) ?: return
-                        typeReference.newTypeText = IdeDescriptorRenderers.SOURCE_CODE.renderType(newType)
-                        affectedElements.add(typeReference)
-                    }
-                }
-        )
-
-        return affectedElements
-    }
-
-    private fun processMarkedElements(member: JetNamedDeclaration) {
-        val psiFactory = JetPsiFactory(member)
-        val targetThis = psiFactory.createExpression("this@${data.targetClassDescriptor.name.asString()}")
-        val shorteningOptionsForThis = ShortenReferences.Options(removeThisLabels = true, removeThis = true)
-
-        member.accept(
-                object: JetVisitorVoid() {
-                    private fun visitSuperOrThis(expression: JetInstanceExpressionWithLabel) {
-                        expression.replaceWithTargetThis?.let {
-                            expression.replaceWithTargetThis = null
-
-                            val newThisExpression = expression.replace(targetThis) as JetExpression
-                            newThisExpression.getQualifiedExpressionForReceiverOrThis().addToShorteningWaitSet(shorteningOptionsForThis)
-                        }
-                    }
-
-                    override fun visitElement(element: PsiElement) {
-                        for (it in element.allChildren.toList()) {
-                            it.accept(this)
-                        }
-                    }
-
-                    override fun visitSimpleNameExpression(expression: JetSimpleNameExpression) {
-                        expression.newFqName?.let {
-                            expression.newFqName = null
-
-                            expression.mainReference.bindToFqName(it)
-                        }
-                    }
-
-                    override fun visitThisExpression(expression: JetThisExpression) {
-                        visitSuperOrThis(expression)
-                    }
-
-                    override fun visitSuperExpression(expression: JetSuperExpression) {
-                        visitSuperOrThis(expression)
-                    }
-
-                    override fun visitTypeReference(typeReference: JetTypeReference) {
-                        typeReference.newTypeText?.let {
-                            typeReference.newTypeText = null
-
-                            (typeReference.replace(psiFactory.createType(it)) as JetElement).addToShorteningWaitSet()
-                        }
-                    }
-                }
-        )
-    }
-
-    private fun clearMarking(markedElements: List<JetElement>) {
-        markedElements.forEach {
-            it.newFqName = null
-            it.newTypeText = null
-            it.replaceWithTargetThis = null
-        }
-    }
-
     private fun moveSuperInterface(member: JetClass, substitutor: PsiSubstitutor) {
         val classDescriptor = data.memberDescriptors[member] as? ClassDescriptor ?: return
-        val currentSpecifier =
-                data.sourceClass.getDelegationSpecifiers()
-                        .filterIsInstance<JetDelegatorToSuperClass>()
-                        .firstOrNull {
-                            val referencedType = data.sourceClassContext[BindingContext.TYPE, it.typeReference]
-                            referencedType?.constructor?.declarationDescriptor == classDescriptor
-                        } ?: return
+        val currentSpecifier = data.sourceClass.getDelegatorToSuperClassByDescriptor(classDescriptor, data.sourceClassContext) ?: return
         when (data.targetClass) {
             is JetClass -> {
                 data.sourceClass.removeDelegationSpecifier(currentSpecifier)
-
-                if (DescriptorUtils.isSubclass(data.targetClassDescriptor, classDescriptor)) return
-
-                val referencedType = data.sourceClassContext[BindingContext.TYPE, currentSpecifier.typeReference]!!
-                val typeInTargetClass = data.sourceToTargetClassSubstitutor.substitute(referencedType, Variance.INVARIANT)
-                if (!(typeInTargetClass != null && !typeInTargetClass.isError)) return
-
-                val renderedType = IdeDescriptorRenderers.SOURCE_CODE.renderType(typeInTargetClass)
-                val newSpecifier = JetPsiFactory(member).createDelegatorToSuperClass(renderedType)
-                data.targetClass.addDelegationSpecifier(newSpecifier).addToShorteningWaitSet()
+                addDelegatorToSuperClass(currentSpecifier, data.targetClass, data.targetClassDescriptor, data.sourceClassContext, data.sourceToTargetClassSubstitutor)
             }
 
             is PsiClass -> {
@@ -601,7 +418,7 @@ class KotlinPullUpHelper(
             return
         }
 
-        val markedElements = markElements(member)
+        val markedElements = markElements(member, data.sourceClassContext, data.sourceClassDescriptor, data.targetClassDescriptor)
         val memberCopy = member.copy() as JetNamedDeclaration
 
         fun moveClassOrObject(member: JetClassOrObject, memberCopy: JetClassOrObject): JetClassOrObject {
@@ -629,7 +446,7 @@ class KotlinPullUpHelper(
             }
             if (toAbstract) {
                 if (!originalIsAbstract) {
-                    makeAbstract(member, memberCopy)
+                    makeAbstract(memberCopy, data.memberDescriptors[member] as CallableMemberDescriptor, data.sourceToTargetClassSubstitutor, data.targetClass)
                 }
 
                 movedMember = doAddCallableMember(memberCopy, clashingSuper, data.targetClass)
@@ -661,7 +478,7 @@ class KotlinPullUpHelper(
                 else -> return
             }
 
-            processMarkedElements(movedMember)
+            applyMarking(movedMember, data.sourceToTargetClassSubstitutor, data.targetClassDescriptor)
             addMovedMember(movedMember)
         }
         finally {

idea/src/org/jetbrains/kotlin/idea/refactoring/pullUp/markingUtils.kt

@@ -0,0 +1,167 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pullUp
+
+import com.intellij.openapi.util.Key
+import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.idea.codeInsight.shorten.addToShorteningWaitSet
+import org.jetbrains.kotlin.idea.imports.importableFqName
+import org.jetbrains.kotlin.idea.references.mainReference
+import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
+import org.jetbrains.kotlin.idea.util.ShortenReferences
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.allChildren
+import org.jetbrains.kotlin.psi.psiUtil.getQualifiedExpressionForReceiverOrThis
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.DescriptorUtils
+import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
+import org.jetbrains.kotlin.resolve.calls.resolvedCallUtil.getExplicitReceiverValue
+import org.jetbrains.kotlin.types.TypeSubstitutor
+import org.jetbrains.kotlin.types.Variance
+import java.util.*
+
+private var JetElement.newFqName: FqName? by CopyableUserDataProperty(Key.create("NEW_FQ_NAME"))
+private var JetElement.replaceWithTargetThis: Boolean? by CopyableUserDataProperty(Key.create("REPLACE_WITH_TARGET_THIS"))
+private var JetElement.newTypeText: ((TypeSubstitutor) -> String?)? by CopyableUserDataProperty(Key.create("NEW_TYPE_TEXT"))
+
+fun markElements(
+        declaration: JetNamedDeclaration,
+        context: BindingContext,
+        sourceClassDescriptor: ClassDescriptor, targetClassDescriptor: ClassDescriptor?
+): List<JetElement> {
+    val affectedElements = ArrayList<JetElement>()
+
+    declaration.accept(
+            object : JetVisitorVoid() {
+                private fun visitSuperOrThis(expression: JetInstanceExpressionWithLabel) {
+                    if (targetClassDescriptor == null) return
+
+                    val referenceTarget = context[BindingContext.REFERENCE_TARGET, expression.instanceReference]
+                    if (referenceTarget == targetClassDescriptor) {
+                        expression.replaceWithTargetThis = true
+                        affectedElements.add(expression)
+                    }
+                }
+
+                override fun visitElement(element: PsiElement) {
+                    element.allChildren.forEach { it.accept(this) }
+                }
+
+                override fun visitSimpleNameExpression(expression: JetSimpleNameExpression) {
+                    val resolvedCall = expression.getResolvedCall(context) ?: return
+                    var receiver = resolvedCall.getExplicitReceiverValue()
+                    if (!receiver.exists()) {
+                        receiver = resolvedCall.extensionReceiver
+                    }
+                    if (!receiver.exists()) {
+                        receiver = resolvedCall.dispatchReceiver
+                    }
+                    if (!receiver.exists()) return
+
+                    val implicitThis = receiver.type.constructor.declarationDescriptor as? ClassDescriptor ?: return
+                    if (implicitThis.isCompanionObject
+                        && DescriptorUtils.isAncestor(sourceClassDescriptor, implicitThis, true)) {
+                        val qualifierFqName = implicitThis.importableFqName ?: return
+
+                        expression.newFqName = FqName("${qualifierFqName.asString()}.${expression.getReferencedName()}")
+                        affectedElements.add(expression)
+                    }
+                }
+
+                override fun visitThisExpression(expression: JetThisExpression) {
+                    visitSuperOrThis(expression)
+                }
+
+                override fun visitSuperExpression(expression: JetSuperExpression) {
+                    visitSuperOrThis(expression)
+                }
+
+                override fun visitTypeReference(typeReference: JetTypeReference) {
+                    val oldType = context[BindingContext.TYPE, typeReference] ?: return
+                    typeReference.newTypeText = f@ { substitutor ->
+                        substitutor.substitute(oldType, Variance.INVARIANT)?.let { IdeDescriptorRenderers.SOURCE_CODE.renderType(it) }
+                    }
+                    affectedElements.add(typeReference)
+                }
+            }
+    )
+
+    return affectedElements
+}
+
+fun applyMarking(
+        declaration: JetNamedDeclaration,
+        substitutor: TypeSubstitutor, targetClassDescriptor: ClassDescriptor
+) {
+    val psiFactory = JetPsiFactory(declaration)
+    val targetThis = psiFactory.createExpression("this@${targetClassDescriptor.name.asString()}")
+    val shorteningOptionsForThis = ShortenReferences.Options(removeThisLabels = true, removeThis = true)
+
+    declaration.accept(
+            object : JetVisitorVoid() {
+                private fun visitSuperOrThis(expression: JetInstanceExpressionWithLabel) {
+                    expression.replaceWithTargetThis?.let {
+                        expression.replaceWithTargetThis = null
+
+                        val newThisExpression = expression.replace(targetThis) as JetExpression
+                        newThisExpression.getQualifiedExpressionForReceiverOrThis().addToShorteningWaitSet(shorteningOptionsForThis)
+                    }
+                }
+
+                override fun visitElement(element: PsiElement) {
+                    for (it in element.allChildren.toList()) {
+                        it.accept(this)
+                    }
+                }
+
+                override fun visitSimpleNameExpression(expression: JetSimpleNameExpression) {
+                    expression.newFqName?.let {
+                        expression.newFqName = null
+
+                        expression.mainReference.bindToFqName(it)
+                    }
+                }
+
+                override fun visitThisExpression(expression: JetThisExpression) {
+                    this.visitSuperOrThis(expression)
+                }
+
+                override fun visitSuperExpression(expression: JetSuperExpression) {
+                    this.visitSuperOrThis(expression)
+                }
+
+                override fun visitTypeReference(typeReference: JetTypeReference) {
+                    typeReference.newTypeText?.let f@ {
+                        typeReference.newTypeText = null
+
+                        val newTypeText = it(substitutor) ?: return@f
+                        (typeReference.replace(psiFactory.createType(newTypeText)) as JetElement).addToShorteningWaitSet()
+                    }
+                }
+            }
+    )
+}
+
+fun clearMarking(markedElements: List<JetElement>) {
+    markedElements.forEach {
+        it.newFqName = null
+        it.newTypeText = null
+        it.replaceWithTargetThis = null
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/pullUp/pullUpUtils.kt

@@ -17,10 +17,20 @@
 package org.jetbrains.kotlin.idea.refactoring.pullUp
 
 import com.intellij.psi.PsiClass
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.idea.codeInsight.shorten.addToShorteningWaitSet
 import org.jetbrains.kotlin.idea.core.replaced
+import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.lexer.JetModifierKeywordToken
 import org.jetbrains.kotlin.lexer.JetTokens
 import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.DescriptorUtils
+import org.jetbrains.kotlin.types.TypeSubstitutor
+import org.jetbrains.kotlin.types.Variance
+import org.jetbrains.kotlin.types.typeUtil.isUnit
 
 fun JetProperty.mustBeAbstractInInterface() =
         hasInitializer() || hasDelegate() || (!hasInitializer() && !hasDelegate() && accessors.isEmpty())
@@ -74,4 +84,76 @@ fun JetClass.makeAbstract() {
     if (!isInterface()) {
         addModifierWithSpace(JetTokens.ABSTRACT_KEYWORD)
     }
+}
+
+fun JetClassOrObject.getDelegatorToSuperClassByDescriptor(
+        descriptor: ClassDescriptor,
+        context: BindingContext
+): JetDelegatorToSuperClass? {
+    return getDelegationSpecifiers()
+            .filterIsInstance<JetDelegatorToSuperClass>()
+            .firstOrNull {
+                val referencedType = context[BindingContext.TYPE, it.typeReference]
+                referencedType?.constructor?.declarationDescriptor == descriptor
+            }
+}
+
+fun makeAbstract(member: JetCallableDeclaration,
+                 originalMemberDescriptor: CallableMemberDescriptor,
+                 substitutor: TypeSubstitutor,
+                 targetClass: JetClass) {
+    if (!targetClass.isInterface()) {
+        member.addModifierWithSpace(JetTokens.ABSTRACT_KEYWORD)
+    }
+
+    if (member.typeReference == null) {
+        var type = originalMemberDescriptor.returnType
+        if (type == null || type.isError) {
+            type = KotlinBuiltIns.getInstance().nullableAnyType
+        }
+        else {
+            type = substitutor.substitute(type, Variance.INVARIANT) ?: KotlinBuiltIns.getInstance().nullableAnyType
+        }
+
+        if (member is JetProperty || !type.isUnit()) {
+            val typeRef = JetPsiFactory(targetClass).createType(IdeDescriptorRenderers.SOURCE_CODE.renderType(type))
+            member.setTypeReference(typeRef)
+        }
+    }
+
+    val deleteFrom = when (member) {
+        is JetProperty -> {
+            member.equalsToken ?: member.delegate ?: member.accessors.firstOrNull()
+        }
+
+        is JetNamedFunction -> {
+            member.equalsToken ?: member.bodyExpression
+        }
+
+        else -> null
+    }
+
+    if (deleteFrom != null) {
+        member.deleteChildRange(deleteFrom, member.lastChild)
+    }
+}
+
+fun addDelegatorToSuperClass(
+        delegator: JetDelegatorToSuperClass,
+        targetClass: JetClassOrObject,
+        targetClassDescriptor: ClassDescriptor,
+        context: BindingContext,
+        substitutor: TypeSubstitutor
+) {
+    val referencedType = context[BindingContext.TYPE, delegator.typeReference]!!
+    val referencedClass = referencedType.constructor.declarationDescriptor as? ClassDescriptor ?: return
+
+    if (targetClassDescriptor == referencedClass || DescriptorUtils.isDirectSubclass(targetClassDescriptor, referencedClass)) return
+
+    val typeInTargetClass = substitutor.substitute(referencedType, Variance.INVARIANT)
+    if (!(typeInTargetClass != null && !typeInTargetClass.isError)) return
+
+    val renderedType = IdeDescriptorRenderers.SOURCE_CODE.renderType(typeInTargetClass)
+    val newSpecifier = JetPsiFactory(targetClass).createDelegatorToSuperClass(renderedType)
+    targetClass.addDelegationSpecifier(newSpecifier).addToShorteningWaitSet()
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/pushDown/KotlinPushDownDialog.kt

@@ -0,0 +1,104 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pushDown
+
+import com.intellij.openapi.project.Project
+import com.intellij.refactoring.JavaRefactoringSettings
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.classMembers.AbstractMemberInfoModel
+import com.intellij.refactoring.classMembers.MemberInfoChange
+import com.intellij.refactoring.ui.RefactoringDialog
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberSelectionPanel
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.qualifiedClassNameForRendering
+import org.jetbrains.kotlin.psi.JetClass
+import org.jetbrains.kotlin.psi.JetNamedDeclaration
+import org.jetbrains.kotlin.psi.JetNamedFunction
+import org.jetbrains.kotlin.psi.JetProperty
+import java.awt.BorderLayout
+import java.awt.GridBagConstraints
+import java.awt.GridBagLayout
+import java.awt.Insets
+import javax.swing.JComponent
+import javax.swing.JLabel
+import javax.swing.JPanel
+
+public class KotlinPushDownDialog(
+        project: Project,
+        private val memberInfos: List<KotlinMemberInfo>,
+        private val sourceClass: JetClass
+) : RefactoringDialog(project, true) {
+    init {
+        title = PUSH_MEMBERS_DOWN
+        init()
+    }
+
+    private var memberInfoModel: AbstractMemberInfoModel<JetNamedDeclaration, KotlinMemberInfo>? = null
+
+    public val selectedMemberInfos: List<KotlinMemberInfo>
+        get() = memberInfos.filter { it.isChecked && memberInfoModel?.isMemberEnabled(it) ?: false }
+
+    override fun getDimensionServiceKey() = "#" + javaClass.name
+
+    override fun createNorthPanel(): JComponent? {
+        val gbConstraints = GridBagConstraints()
+
+        val panel = JPanel(GridBagLayout())
+
+        gbConstraints.insets = Insets(4, 0, 10, 8)
+        gbConstraints.weighty = 1.0
+        gbConstraints.weightx = 1.0
+        gbConstraints.gridy = 0
+        gbConstraints.gridwidth = GridBagConstraints.REMAINDER
+        gbConstraints.fill = GridBagConstraints.BOTH
+        gbConstraints.anchor = GridBagConstraints.WEST
+        panel.add(JLabel(RefactoringBundle.message("push.members.from.0.down.label",
+                                                   sourceClass.qualifiedClassNameForRendering())), gbConstraints)
+        return panel
+    }
+
+    override fun createCenterPanel(): JComponent? {
+        val panel = JPanel(BorderLayout())
+        val memberSelectionPanel = KotlinMemberSelectionPanel(
+                RefactoringBundle.message("members.to.be.pushed.down.panel.title"),
+                memberInfos,
+                RefactoringBundle.message("keep.abstract.column.header"))
+        panel.add(memberSelectionPanel, BorderLayout.CENTER)
+
+        memberInfoModel = object : AbstractMemberInfoModel<JetNamedDeclaration, KotlinMemberInfo>() {
+            override fun isFixedAbstract(member: KotlinMemberInfo?) = null
+
+            override fun isAbstractEnabled(memberInfo: KotlinMemberInfo): Boolean {
+                val member = memberInfo.member
+                return member is JetNamedFunction || member is JetProperty
+            }
+        }
+        memberInfoModel!!.memberInfoChanged(MemberInfoChange(memberInfos))
+        memberSelectionPanel.table.memberInfoModel = memberInfoModel
+        memberSelectionPanel.table.addMemberInfoChangeListener(memberInfoModel)
+
+        return panel
+    }
+
+    override fun doAction() {
+        if (!isOKActionEnabled()) return
+
+        JavaRefactoringSettings.getInstance().PUSH_DOWN_PREVIEW_USAGES = isPreviewUsages
+
+        invokeRefactoring(KotlinPushDownProcessor(getProject(), sourceClass, selectedMemberInfos))
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/pushDown/KotlinPushDownHandler.kt

@@ -0,0 +1,89 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pushDown
+
+import com.intellij.openapi.actionSystem.DataContext
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiManager
+import com.intellij.refactoring.HelpID
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.util.CommonRefactoringUtil
+import com.intellij.refactoring.util.RefactoringUIUtil
+import org.jetbrains.kotlin.idea.refactoring.AbstractPullPushMembersHandler
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfoStorage
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.qualifiedClassNameForRendering
+import org.jetbrains.kotlin.idea.refactoring.pullUp.PULL_MEMBERS_UP
+import org.jetbrains.kotlin.psi.JetClass
+import org.jetbrains.kotlin.psi.JetClassOrObject
+import org.jetbrains.kotlin.psi.JetNamedDeclaration
+import org.jetbrains.kotlin.psi.JetObjectDeclaration
+import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType
+import org.jetbrains.kotlin.psi.psiUtil.isInheritable
+
+val PUSH_MEMBERS_DOWN = "Push Members Down"
+
+public class KotlinPushDownHandler : AbstractPullPushMembersHandler(
+        refactoringName = PUSH_MEMBERS_DOWN,
+        helpId = HelpID.MEMBERS_PUSH_DOWN,
+        wrongPositionMessage = RefactoringBundle.message("the.caret.should.be.positioned.inside.a.class.to.push.members.from")
+) {
+    companion object {
+        val PUSH_DOWN_TEST_HELPER_KEY = "PUSH_DOWN_TEST_HELPER_KEY"
+    }
+
+    interface TestHelper {
+        fun adjustMembers(members: List<KotlinMemberInfo>): List<KotlinMemberInfo>
+    }
+
+    private fun reportFinalClassOrObject(project: Project, editor: Editor?, classOrObject: JetClassOrObject) {
+        val message = RefactoringBundle.getCannotRefactorMessage(
+                "${RefactoringUIUtil.getDescription(classOrObject, false)} is final".capitalize()
+        )
+        CommonRefactoringUtil.showErrorHint(project, editor, message, PULL_MEMBERS_UP, HelpID.MEMBERS_PULL_UP)
+    }
+
+    override fun invoke(project: Project,
+                        editor: Editor?,
+                        classOrObject: JetClassOrObject?,
+                        member: JetNamedDeclaration?,
+                        dataContext: DataContext?) {
+        if (classOrObject == null) {
+            reportWrongContext(project, editor)
+            return
+        }
+
+        if (!(classOrObject is JetClass && classOrObject.isInheritable())) {
+            reportFinalClassOrObject(project, editor, classOrObject)
+            return
+        }
+
+        val members = KotlinMemberInfoStorage(classOrObject).getClassMemberInfos(classOrObject)
+        if (ApplicationManager.getApplication().isUnitTestMode) {
+            val helper = dataContext?.getData(PUSH_DOWN_TEST_HELPER_KEY) as TestHelper
+            val selectedMembers = helper.adjustMembers(members)
+            KotlinPushDownProcessor(project, classOrObject, selectedMembers).run()
+        }
+        else {
+            val manager = PsiManager.getInstance(project)
+            members.filter { manager.areElementsEquivalent(it.member, member) }.forEach { it.isChecked = true }
+            KotlinPushDownDialog(project, members, classOrObject).show()
+        }
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/pushDown/KotlinPushDownProcessor.kt

@@ -0,0 +1,202 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pushDown
+
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiElement
+import com.intellij.refactoring.BaseRefactoringProcessor
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.listeners.RefactoringEventData
+import com.intellij.usageView.UsageInfo
+import com.intellij.usageView.UsageViewBundle
+import com.intellij.usageView.UsageViewDescriptor
+import org.jetbrains.kotlin.asJava.unwrapped
+import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.ClassKind
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
+import org.jetbrains.kotlin.idea.codeInsight.shorten.addToShorteningWaitSet
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
+import org.jetbrains.kotlin.idea.refactoring.pullUp.*
+import org.jetbrains.kotlin.idea.search.declarationsSearch.HierarchySearchRequest
+import org.jetbrains.kotlin.idea.search.declarationsSearch.searchInheritors
+import org.jetbrains.kotlin.lexer.JetTokens
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.source.getPsi
+import org.jetbrains.kotlin.types.TypeSubstitutor
+import org.jetbrains.kotlin.types.substitutions.getTypeSubstitutor
+import org.jetbrains.kotlin.util.findCallableMemberBySignature
+import org.jetbrains.kotlin.utils.keysToMap
+import java.util.ArrayList
+
+public class KotlinPushDownProcessor(
+        project: Project,
+        private val sourceClass: JetClass,
+        private val membersToMove: List<KotlinMemberInfo>
+) : BaseRefactoringProcessor(project) {
+    private val resolutionFacade = sourceClass.getResolutionFacade()
+
+    private val sourceClassContext = resolutionFacade.analyzeFullyAndGetResult(listOf(sourceClass)).bindingContext
+
+    private val sourceClassDescriptor = sourceClassContext[BindingContext.DECLARATION_TO_DESCRIPTOR, sourceClass] as ClassDescriptor
+
+    private val memberDescriptors = membersToMove
+            .map { it.member }
+            .keysToMap { sourceClassContext[BindingContext.DECLARATION_TO_DESCRIPTOR, it]!! }
+
+    inner class UsageViewDescriptorImpl : UsageViewDescriptor {
+        override fun getProcessedElementsHeader() = RefactoringBundle.message("push.down.members.elements.header")
+
+        override fun getElements() = arrayOf(sourceClass)
+
+        override fun getCodeReferencesText(usagesCount: Int, filesCount: Int) =
+                RefactoringBundle.message("classes.to.push.down.members.to", UsageViewBundle.getReferencesString(usagesCount, filesCount))
+
+        override fun getCommentReferencesText(usagesCount: Int, filesCount: Int) = null
+    }
+
+    class SubclassUsage(element: PsiElement) : UsageInfo(element)
+
+    override fun getCommandName() = PUSH_MEMBERS_DOWN
+
+    override fun createUsageViewDescriptor(usages: Array<out UsageInfo>) = UsageViewDescriptorImpl()
+
+    override fun getBeforeData() = RefactoringEventData().apply {
+        addElement(sourceClass)
+        addElements(membersToMove.map { it.member }.toTypedArray())
+    }
+
+    override fun getAfterData(usages: Array<out UsageInfo>) = RefactoringEventData().apply {
+        addElements(usages.map { it.element as? JetClassOrObject }.filterNotNull())
+    }
+
+    override fun findUsages(): Array<out UsageInfo> {
+        return HierarchySearchRequest(sourceClass, sourceClass.useScope, false)
+                .searchInheritors()
+                .map { it.unwrapped }
+                .filterNotNull()
+                .map { SubclassUsage(it) }
+                .toTypedArray()
+    }
+
+    private fun pushDownToClass(targetClass: JetClassOrObject) {
+        val targetClassDescriptor = resolutionFacade.resolveToDescriptor(targetClass) as ClassDescriptor
+        val substitutor = getTypeSubstitutor(sourceClassDescriptor.defaultType, targetClassDescriptor.defaultType)
+                          ?: TypeSubstitutor.EMPTY
+        members@ for (memberInfo in membersToMove) {
+            val member = memberInfo.member
+            val memberDescriptor = memberDescriptors[member] ?: continue
+
+            val movedMember = when (member) {
+                is JetProperty, is JetNamedFunction -> {
+                    memberDescriptor as CallableMemberDescriptor
+
+                    val targetMemberDescriptor = memberDescriptor.substitute(substitutor)?.let {
+                        targetClassDescriptor.findCallableMemberBySignature(it as CallableMemberDescriptor)
+                    }
+                    val targetMember = targetMemberDescriptor?.source?.getPsi() as? JetCallableDeclaration
+                    targetMember?.apply {
+                        if (memberDescriptor.modality != Modality.ABSTRACT && memberInfo.isToAbstract) {
+                            addModifierWithSpace(JetTokens.OVERRIDE_KEYWORD)
+                        }
+                        else if (memberDescriptor.overriddenDescriptors.isEmpty()) {
+                            removeModifier(JetTokens.OVERRIDE_KEYWORD)
+                        }
+                        else {
+                            addModifierWithSpace(JetTokens.OVERRIDE_KEYWORD)
+                        }
+                    } ?: addMemberToTarget(member, targetClass).apply {
+                        if (sourceClassDescriptor.kind == ClassKind.INTERFACE) {
+                            if (targetClassDescriptor.kind != ClassKind.INTERFACE && memberDescriptor.modality == Modality.ABSTRACT) {
+                                addModifierWithSpace(JetTokens.ABSTRACT_KEYWORD)
+                            }
+                        }
+                        if (memberDescriptor.modality != Modality.ABSTRACT && memberInfo.isToAbstract) {
+                            if (hasModifier(JetTokens.PRIVATE_KEYWORD)) {
+                                addModifierWithSpace(JetTokens.PROTECTED_KEYWORD)
+                            }
+                            addModifierWithSpace(JetTokens.OVERRIDE_KEYWORD)
+                        }
+                    }
+                }
+
+                is JetClassOrObject -> {
+                    if (memberInfo.overrides != null) {
+                        sourceClass.getDelegatorToSuperClassByDescriptor(memberDescriptor as ClassDescriptor, sourceClassContext)?.let {
+                            addDelegatorToSuperClass(it, targetClass, targetClassDescriptor, sourceClassContext, substitutor)
+                        }
+                        continue@members
+                    }
+                    else {
+                        addMemberToTarget(member, targetClass)
+                    }
+                }
+
+                else -> continue@members
+            }
+            applyMarking(movedMember, substitutor, targetClassDescriptor)
+        }
+    }
+
+    private fun removeOriginalMembers() {
+        for (memberInfo in membersToMove) {
+            val member = memberInfo.member
+            val memberDescriptor = memberDescriptors[member] ?: continue
+            when (member) {
+                is JetProperty, is JetNamedFunction -> {
+                    member as JetCallableDeclaration
+                    memberDescriptor as CallableMemberDescriptor
+
+                    if (memberDescriptor.modality != Modality.ABSTRACT && memberInfo.isToAbstract) {
+                        if (member.hasModifier(JetTokens.PRIVATE_KEYWORD)) {
+                            member.addModifierWithSpace(JetTokens.PROTECTED_KEYWORD)
+                        }
+                        makeAbstract(member, memberDescriptor, TypeSubstitutor.EMPTY, sourceClass)
+                        member.typeReference?.addToShorteningWaitSet()
+                    }
+                    else {
+                        member.delete()
+                    }
+                }
+                is JetClassOrObject -> {
+                    if (memberInfo.overrides != null) {
+                        sourceClass.getDelegatorToSuperClassByDescriptor(memberDescriptor as ClassDescriptor, sourceClassContext)?.let {
+                            sourceClass.removeDelegationSpecifier(it)
+                        }
+                    }
+                    else {
+                        member.delete()
+                    }
+                }
+            }
+        }
+    }
+
+    override fun performRefactoring(usages: Array<out UsageInfo>) {
+        val markedElements = ArrayList<JetElement>()
+        try {
+            membersToMove.forEach { markedElements += markElements(it.member, sourceClassContext, sourceClassDescriptor, null) }
+            usages.forEach { (it.element as? JetClassOrObject)?.let { pushDownToClass(it) } }
+            removeOriginalMembers()
+        }
+        finally {
+            clearMarking(markedElements)
+        }
+    }
+}

idea/testData/refactoring/pushDown/finalClass.kt

@@ -0,0 +1,8 @@
+class <caret>A {
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    fun foo() {
+
+    }
+}

idea/testData/refactoring/pushDown/finalClass.kt.messages

@@ -0,0 +1,2 @@
+Cannot perform refactoring.
+Class <b><code>A</code></b> is final

idea/testData/refactoring/pushDown/implicitCompanionUsages.kt

@@ -0,0 +1,12 @@
+class X {
+    open class <caret>A {
+        // INFO: {"checked": "true"}
+        fun foo(): Int = bar() + A.bar() + X.A.bar()
+
+        companion object {
+            fun bar() = 1
+        }
+    }
+}
+
+class B : X.A

idea/testData/refactoring/pushDown/implicitCompanionUsages.kt.after

@@ -0,0 +1,13 @@
+class X {
+    open class A {
+
+        companion object {
+            fun bar() = 1
+        }
+    }
+}
+
+class B : X.A {
+    // INFO: {"checked": "true"}
+    fun foo(): Int = X.A.bar() + X.A.bar() + X.A.bar()
+}

idea/testData/refactoring/pushDown/liftPrivate.kt

@@ -0,0 +1,12 @@
+open class <caret>A {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    private fun foo() {
+
+    }
+}
+
+class B : A {
+    fun foo() {
+
+    }
+}

idea/testData/refactoring/pushDown/liftPrivate.kt.after

@@ -0,0 +1,10 @@
+open class A {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    protected abstract fun foo()
+}
+
+class B : A {
+    override fun foo() {
+
+    }
+}

idea/testData/refactoring/pushDown/noCaret.kt

@@ -0,0 +1,4 @@
+
+class A {
+    val x: Int = 1
+}

idea/testData/refactoring/pushDown/noCaret.kt.messages

@@ -0,0 +1,2 @@
+Cannot perform refactoring.
+Caret should be positioned inside a class to push members from

idea/testData/refactoring/pushDown/objectDeclaration.kt

@@ -0,0 +1,8 @@
+object <caret>O {
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    fun foo() {
+
+    }
+}

idea/testData/refactoring/pushDown/objectDeclaration.kt.messages

@@ -0,0 +1,2 @@
+Cannot perform refactoring.
+Object <b><code>O</code></b> is final

idea/testData/refactoring/pushDown/outsideOfClass.kt

@@ -0,0 +1,3 @@
+fun <caret>test() {
+
+}

idea/testData/refactoring/pushDown/outsideOfClass.kt.messages

@@ -0,0 +1,2 @@
+Cannot perform refactoring.
+Caret should be positioned inside a class to push members from

idea/testData/refactoring/pushDown/pushClassMembers.kt

@@ -0,0 +1,34 @@
+abstract class <caret>A {
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    val y: Int get() = 2
+    // INFO: {"checked": "true"}
+    val z: Int by lazy { 3 }
+    // INFO: {"checked": "true"}
+    abstract val t: Int
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+    // INFO: {"checked": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+abstract class B : A() {
+
+}
+
+class C : A() {
+    override val t = 1
+
+    override fun bar(s: String) = s.length()
+}

idea/testData/refactoring/pushDown/pushClassMembers.kt.after

@@ -0,0 +1,55 @@
+abstract class A {
+
+}
+
+abstract class B : A() {
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    val y: Int get() = 2
+    // INFO: {"checked": "true"}
+    val z: Int by lazy { 3 }
+    // INFO: {"checked": "true"}
+    abstract val t: Int
+
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+
+}
+
+class C : A() {
+    val t = 1
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    val y: Int get() = 2
+    // INFO: {"checked": "true"}
+    val z: Int by lazy { 3 }
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}

idea/testData/refactoring/pushDown/pushClassMembersAndMakeAbstract.kt

@@ -0,0 +1,34 @@
+abstract class <caret>A {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val x = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val y: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val z: Int by lazy { 3 }
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val t: Int
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    fun foo(n: Int): Boolean = n > 0
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}
+
+abstract class B : A() {
+
+}
+
+class C : A() {
+    override val t = 1
+
+    override fun bar(s: String) = s.length()
+}

idea/testData/refactoring/pushDown/pushClassMembersAndMakeAbstract.kt.after

@@ -0,0 +1,64 @@
+abstract class A {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val x: Int
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val y: Int
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val z: Int
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract fun foo(n: Int): Boolean
+
+}
+
+abstract class B : A() {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val y: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val z: Int by lazy { 3 }
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val t: Int
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+
+}
+
+class C : A() {
+    val t = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val y: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val z: Int by lazy { 3 }
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    inner class X {
+
+    }
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}

idea/testData/refactoring/pushDown/pushClassMembersWithGenerics.kt

@@ -0,0 +1,29 @@
+interface Z<T>
+
+open class <caret>A<T> {
+    // INFO: {"checked": "true"}
+    val t1: T
+    // INFO: {"checked": "true"}
+    val t2: Z<T>
+
+    // INFO: {"checked": "true"}
+    fun foo<S>(t1: T, t2: Z<T>, s1: S, s2: Z<S>): Boolean = true
+
+    // INFO: {"checked": "true"}
+    inner class X : Z<T> {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y<U> : Z<U> {
+
+    }
+}
+
+class B<S> : A<Z<S>>() {
+
+}
+
+class C<K> : A<B<K>>() {
+
+}

idea/testData/refactoring/pushDown/pushClassMembersWithGenerics.kt.after

@@ -0,0 +1,47 @@
+interface Z<T>
+
+open class A<T> {
+
+}
+
+class B<S> : A<Z<S>>() {
+    // INFO: {"checked": "true"}
+    val t1: Z<S>
+    // INFO: {"checked": "true"}
+    val t2: Z<Z<S>>
+
+    // INFO: {"checked": "true"}
+    fun foo<S>(t1: Z<S>, t2: Z<Z<S>>, s1: S, s2: Z<S>): Boolean = true
+
+    // INFO: {"checked": "true"}
+    inner class X : Z<Z<S>> {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y<U> : Z<U> {
+
+    }
+
+}
+
+class C<K> : A<B<K>>() {
+    // INFO: {"checked": "true"}
+    val t1: B<K>
+    // INFO: {"checked": "true"}
+    val t2: Z<B<K>>
+
+    // INFO: {"checked": "true"}
+    fun foo<S>(t1: B<K>, t2: Z<B<K>>, s1: S, s2: Z<S>): Boolean = true
+
+    // INFO: {"checked": "true"}
+    inner class X : Z<B<K>> {
+
+    }
+
+    // INFO: {"checked": "true"}
+    class Y<U> : Z<U> {
+
+    }
+
+}

idea/testData/refactoring/pushDown/pushInterfaceMembers.kt

@@ -0,0 +1,31 @@
+interface <caret>I {
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true"}
+    val y: Int
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+    // INFO: {"checked": "true"}
+    fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+abstract class A : I
+
+class B : I {
+    override val y = 1
+
+    override fun bar(s: String) = s.length()
+}
+
+interface J : I
+
+interface K : I {
+    override val y: Int get() = 1
+
+    override fun bar(s: String) = s.length()
+}

idea/testData/refactoring/pushDown/pushInterfaceMembers.kt.after

@@ -0,0 +1,69 @@
+interface I {
+
+}
+
+abstract class A : I {
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true"}
+    abstract val y: Int
+
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+class B : I {
+    val y = 1
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+interface J : I {
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true"}
+    val y: Int
+
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+interface K : I {
+    val y: Int get() = 1
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}

idea/testData/refactoring/pushDown/pushInterfaceMembersAndMakeAbstract.kt

@@ -0,0 +1,31 @@
+interface <caret>I {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val y: Int
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    fun foo(n: Int): Boolean = n > 0
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    fun bar(s: String)
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}
+
+abstract class A : I
+
+class B : I {
+    override val y = 1
+
+    override fun bar(s: String) = s.length()
+}
+
+interface J : I
+
+interface K : I {
+    override val y: Int get() = 1
+
+    override fun bar(s: String) = s.length()
+}

idea/testData/refactoring/pushDown/pushInterfaceMembersAndMakeAbstract.kt.after

@@ -0,0 +1,74 @@
+interface I {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val x: Int
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    fun foo(n: Int): Boolean
+
+}
+
+abstract class A : I {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract val y: Int
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}
+
+class B : I {
+    val y = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}
+
+interface J : I {
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x: Int get() = 2
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    val y: Int
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    fun bar(s: String)
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}
+
+interface K : I {
+    val y: Int get() = 1
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    override fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true", "toAbstract": "true"}
+    class Y {
+
+    }
+}

idea/testData/refactoring/pushDown/pushSuperInterfaces.kt

@@ -0,0 +1,12 @@
+// INFO: {"checked": "true"}
+interface X
+
+// INFO: {"checked": "true"}
+interface Y
+
+// INFO: {"checked": "true"}
+interface Z
+
+open class <caret>A : X, Y, Z
+
+class B : A(), Z

idea/testData/refactoring/pushDown/pushSuperInterfaces.kt.after

@@ -0,0 +1,12 @@
+// INFO: {"checked": "true"}
+interface X
+
+// INFO: {"checked": "true"}
+interface Y
+
+// INFO: {"checked": "true"}
+interface Z
+
+open class A
+
+class B : A(), Z, X, Y

idea/testData/refactoring/pushDown/pushSuperInterfacesWithGenerics.kt

@@ -0,0 +1,14 @@
+interface I
+
+// INFO: {"checked": "true"}
+interface X<T>
+
+// INFO: {"checked": "true"}
+interface Y<T>
+
+// INFO: {"checked": "true"}
+interface Z<T>
+
+open class <caret>A<T, U> : X<T>, Y<X<I>>, Z<Y<U>>
+
+class B<S> : A<X<S>, Y<S>>(), Z<I>

idea/testData/refactoring/pushDown/pushSuperInterfacesWithGenerics.kt.after

@@ -0,0 +1,14 @@
+interface I
+
+// INFO: {"checked": "true"}
+interface X<T>
+
+// INFO: {"checked": "true"}
+interface Y<T>
+
+// INFO: {"checked": "true"}
+interface Z<T>
+
+open class A<T, U>
+
+class B<S> : A<X<S>, Y<S>>(), Z<I>, X<X<S>>, Y<X<I>>

idea/tests/org/jetbrains/kotlin/idea/refactoring/AbstractMemberPullPushTest.kt

@@ -0,0 +1,110 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring
+
+import com.google.gson.JsonParser
+import com.intellij.openapi.util.Key
+import com.intellij.openapi.util.io.FileUtil
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.refactoring.BaseRefactoringProcessor
+import com.intellij.refactoring.classMembers.MemberInfoBase
+import com.intellij.refactoring.util.CommonRefactoringUtil
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import org.jetbrains.kotlin.idea.test.ConfigLibraryUtil
+import org.jetbrains.kotlin.idea.test.JetLightCodeInsightFixtureTestCase
+import org.jetbrains.kotlin.idea.test.JetWithJdkAndRuntimeLightProjectDescriptor
+import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
+import org.jetbrains.kotlin.psi.NotNullableUserDataProperty
+import org.jetbrains.kotlin.test.InTextDirectivesUtils
+import org.jetbrains.kotlin.test.JetTestUtils
+import org.jetbrains.kotlin.test.util.findElementsByCommentPrefix
+import java.io.File
+
+public abstract class AbstractMemberPullPushTest : JetLightCodeInsightFixtureTestCase() {
+    private data class ElementInfo(val checked: Boolean, val toAbstract: Boolean)
+
+    companion object {
+        private var PsiElement.elementInfo: ElementInfo
+                by NotNullableUserDataProperty(Key.create("ELEMENT_INFO"), ElementInfo(false, false))
+    }
+
+    override fun getProjectDescriptor() = JetWithJdkAndRuntimeLightProjectDescriptor.INSTANCE
+
+    val fixture: JavaCodeInsightTestFixture get() = myFixture
+
+    protected override fun getTestDataPath() = PluginTestCaseBase.getTestDataPathBase()
+
+    protected fun doTest(path: String, action: (mainFile: PsiFile) -> Unit) {
+        val mainFile = File(path)
+        val afterFile = File("$path.after")
+        val conflictFile = File("$path.messages")
+
+        fixture.testDataPath = "${JetTestUtils.getHomeDirectory()}/${mainFile.getParent()}"
+
+        val mainFileName = mainFile.getName()
+        val mainFileBaseName = FileUtil.getNameWithoutExtension(mainFileName)
+        val extraFiles = mainFile.parentFile.listFiles { file, name ->
+            name != mainFileName && name.startsWith("$mainFileBaseName.") && (name.endsWith(".kt") || name.endsWith(".java"))
+        }
+        val extraFilesToPsi = extraFiles.toMap { fixture.configureByFile(it.getName()) }
+        val file = fixture.configureByFile(mainFileName)
+
+        val addKotlinRuntime = InTextDirectivesUtils.findStringWithPrefixes(file.text, "// WITH_RUNTIME") != null
+        if (addKotlinRuntime) {
+            ConfigLibraryUtil.configureKotlinRuntimeAndSdk(myModule, PluginTestCaseBase.mockJdk())
+        }
+
+        try {
+            for ((element, info) in file.findElementsByCommentPrefix("// INFO: ")) {
+                val parsedInfo = JsonParser().parse(info).asJsonObject
+                element.elementInfo = ElementInfo(parsedInfo["checked"]?.asBoolean ?: false,
+                                                  parsedInfo["toAbstract"]?.asBoolean ?: false)
+            }
+
+            action(file)
+
+            assert(!conflictFile.exists()) { "Conflict file $conflictFile should not exist" }
+            JetTestUtils.assertEqualsToFile(afterFile, file.text!!)
+            for ((extraPsiFile, extraFile) in extraFilesToPsi) {
+                JetTestUtils.assertEqualsToFile(File("${extraFile.getPath()}.after"), extraPsiFile.text)
+            }
+        }
+        catch(e: Exception) {
+            val message = when (e) {
+                is BaseRefactoringProcessor.ConflictsInTestsException -> e.messages.sort().joinToString("\n")
+                is CommonRefactoringUtil.RefactoringErrorHintException -> e.getMessage()!!
+                else -> throw e
+            }
+            JetTestUtils.assertEqualsToFile(conflictFile, message)
+        }
+        finally {
+            if (addKotlinRuntime) {
+                ConfigLibraryUtil.unConfigureKotlinRuntimeAndSdk(myModule, PluginTestCaseBase.mockJdk())
+            }
+        }
+    }
+
+    protected fun chooseMembers<T : MemberInfoBase<*>>(members: List<T>): List<T> {
+        members.forEach {
+            val info = it.member.elementInfo
+            it.isChecked = info.checked
+            it.isToAbstract = info.toAbstract
+        }
+        return members.filter { it.isChecked }
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/pullUp/AbstractPullUpTest.kt

@@ -16,116 +16,29 @@
 
 package org.jetbrains.kotlin.idea.refactoring.pullUp
 
-import com.google.gson.JsonParser
-import com.intellij.openapi.util.Key
-import com.intellij.openapi.util.io.FileUtil
 import com.intellij.psi.*
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.refactoring.BaseRefactoringProcessor
-import com.intellij.refactoring.classMembers.MemberInfoBase
 import com.intellij.refactoring.memberPullUp.PullUpConflictsUtil
 import com.intellij.refactoring.memberPullUp.PullUpProcessor
-import com.intellij.refactoring.util.CommonRefactoringUtil
 import com.intellij.refactoring.util.DocCommentPolicy
 import com.intellij.refactoring.util.RefactoringHierarchyUtil
 import com.intellij.refactoring.util.classMembers.MemberInfoStorage
-import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
 import com.intellij.util.ui.UIUtil
 import org.jetbrains.kotlin.idea.core.getPackage
+import org.jetbrains.kotlin.idea.refactoring.AbstractMemberPullPushTest
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.qualifiedClassNameForRendering
-import org.jetbrains.kotlin.idea.test.ConfigLibraryUtil
-import org.jetbrains.kotlin.idea.test.JetLightCodeInsightFixtureTestCase
-import org.jetbrains.kotlin.idea.test.JetWithJdkAndRuntimeLightProjectDescriptor
-import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
-import org.jetbrains.kotlin.psi.NotNullableUserDataProperty
 import org.jetbrains.kotlin.test.InTextDirectivesUtils
-import org.jetbrains.kotlin.test.JetTestUtils
-import org.jetbrains.kotlin.test.util.findElementsByCommentPrefix
-import java.io.File
-
-public abstract class AbstractPullUpTest : JetLightCodeInsightFixtureTestCase() {
-    private data class ElementInfo(val checked: Boolean, val toAbstract: Boolean)
-
-    companion object {
-        private var PsiElement.elementInfo: ElementInfo
-                by NotNullableUserDataProperty(Key.create("ELEMENT_INFO"), ElementInfo(false, false))
-    }
-
-    override fun getProjectDescriptor() = JetWithJdkAndRuntimeLightProjectDescriptor.INSTANCE
-
-    val fixture: JavaCodeInsightTestFixture get() = myFixture
-
-    protected override fun getTestDataPath() = PluginTestCaseBase.getTestDataPathBase()
-
-    protected fun doTest(path: String, action: (mainFile: PsiFile) -> Unit) {
-        val mainFile = File(path)
-        val afterFile = File("$path.after")
-        val conflictFile = File("$path.messages")
-
-        fixture.testDataPath = "${JetTestUtils.getHomeDirectory()}/${mainFile.getParent()}"
-
-        val mainFileName = mainFile.getName()
-        val mainFileBaseName = FileUtil.getNameWithoutExtension(mainFileName)
-        val extraFiles = mainFile.parentFile.listFiles { file, name ->
-            name != mainFileName && name.startsWith("$mainFileBaseName.") && (name.endsWith(".kt") || name.endsWith(".java"))
-        }
-        val extraFilesToPsi = extraFiles.toMap { fixture.configureByFile(it.getName()) }
-        val file = fixture.configureByFile(mainFileName)
-
-        val addKotlinRuntime = InTextDirectivesUtils.findStringWithPrefixes(file.text, "// WITH_RUNTIME") != null
-        if (addKotlinRuntime) {
-            ConfigLibraryUtil.configureKotlinRuntimeAndSdk(myModule, PluginTestCaseBase.mockJdk())
-        }
-
-        try {
-            for ((element, info) in file.findElementsByCommentPrefix("// INFO: ")) {
-                val parsedInfo = JsonParser().parse(info).asJsonObject
-                element.elementInfo = ElementInfo(parsedInfo["checked"]?.asBoolean ?: false,
-                                                  parsedInfo["toAbstract"]?.asBoolean ?: false)
-            }
-
-            action(file)
-
-            assert(!conflictFile.exists()) { "Conflict file $conflictFile should not exist" }
-            JetTestUtils.assertEqualsToFile(afterFile, file.text!!)
-            for ((extraPsiFile, extraFile) in extraFilesToPsi) {
-                JetTestUtils.assertEqualsToFile(File("${extraFile.getPath()}.after"), extraPsiFile.text)
-            }
-        }
-        catch(e: Exception) {
-            val message = when (e) {
-                is BaseRefactoringProcessor.ConflictsInTestsException -> e.messages.sort().joinToString("\n")
-                is CommonRefactoringUtil.RefactoringErrorHintException -> e.getMessage()!!
-                else -> throw e
-            }
-            JetTestUtils.assertEqualsToFile(conflictFile, message)
-        }
-        finally {
-            if (addKotlinRuntime) {
-                ConfigLibraryUtil.unConfigureKotlinRuntimeAndSdk(myModule, PluginTestCaseBase.mockJdk())
-            }
-        }
-    }
 
+public abstract class AbstractPullUpTest : AbstractMemberPullPushTest() {
     private fun getTargetClassName(file: PsiFile) = InTextDirectivesUtils.findStringWithPrefixes(file.text, "// TARGET_CLASS: ")
 
-    private fun chooseMembers<T : MemberInfoBase<*>>(members: List<T>): List<T> {
-        members.forEach {
-            val info = it.member.elementInfo
-            it.isChecked = info.checked
-            it.isToAbstract = info.toAbstract
-        }
-        return members.filter { it.isChecked }
-    }
-
     protected fun doKotlinTest(path: String) {
         doTest(path) { file ->
             val targetClassName = getTargetClassName(file)
             val helper = object: KotlinPullUpHandler.TestHelper {
-                override fun adjustMembers(members: List<KotlinMemberInfo>): List<KotlinMemberInfo> {
-                    return chooseMembers(members)
-                }
+                override fun adjustMembers(members: List<KotlinMemberInfo>) = chooseMembers(members)
 
                 override fun chooseSuperClass(superClasses: List<PsiNamedElement>): PsiNamedElement {
                     if (targetClassName != null) {
@@ -135,7 +48,7 @@ public abstract class AbstractPullUpTest : JetLightCodeInsightFixtureTestCase()
                 }
             }
             KotlinPullUpHandler().invoke(getProject(), getEditor(), file) {
-                if (it == KotlinPullUpHandler.PULLUP_TEST_HELPER_KEY) helper else null
+                if (it == KotlinPullUpHandler.PULL_UP_TEST_HELPER_KEY) helper else null
             }
         }
     }

idea/tests/org/jetbrains/kotlin/idea/refactoring/pushDown/AbstractPushDownTest.kt

@@ -0,0 +1,33 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pushDown
+
+import org.jetbrains.kotlin.idea.refactoring.AbstractMemberPullPushTest
+import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
+
+public abstract class AbstractPushDownTest : AbstractMemberPullPushTest() {
+    protected fun doTest(path: String) {
+        doTest(path) { file ->
+            val helper = object: KotlinPushDownHandler.TestHelper {
+                override fun adjustMembers(members: List<KotlinMemberInfo>) = chooseMembers(members)
+            }
+            KotlinPushDownHandler().invoke(getProject(), getEditor(), file) {
+                if (it == KotlinPushDownHandler.PUSH_DOWN_TEST_HELPER_KEY) helper else null
+            }
+        }
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/pushDown/PushDownTestGenerated.java

@@ -0,0 +1,115 @@
+/*
+ * 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.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.pushDown;
+
+import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.JUnit3RunnerWithInners;
+import org.jetbrains.kotlin.test.JetTestUtils;
+import org.jetbrains.kotlin.test.TestMetadata;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
+@SuppressWarnings("all")
+@TestMetadata("idea/testData/refactoring/pushDown")
+@TestDataPath("$PROJECT_ROOT")
+@RunWith(JUnit3RunnerWithInners.class)
+public class PushDownTestGenerated extends AbstractPushDownTest {
+    public void testAllFilesPresentInPushDown() throws Exception {
+        JetTestUtils.assertAllTestsPresentInSingleGeneratedClass(this.getClass(), new File("idea/testData/refactoring/pushDown"), Pattern.compile("^(.+)\\.kt$"));
+    }
+
+    @TestMetadata("finalClass.kt")
+    public void testFinalClass() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/finalClass.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("implicitCompanionUsages.kt")
+    public void testImplicitCompanionUsages() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/implicitCompanionUsages.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("liftPrivate.kt")
+    public void testLiftPrivate() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/liftPrivate.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("noCaret.kt")
+    public void testNoCaret() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/noCaret.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("objectDeclaration.kt")
+    public void testObjectDeclaration() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/objectDeclaration.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("outsideOfClass.kt")
+    public void testOutsideOfClass() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/outsideOfClass.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushClassMembers.kt")
+    public void testPushClassMembers() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushClassMembers.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushClassMembersAndMakeAbstract.kt")
+    public void testPushClassMembersAndMakeAbstract() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushClassMembersAndMakeAbstract.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushClassMembersWithGenerics.kt")
+    public void testPushClassMembersWithGenerics() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushClassMembersWithGenerics.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushInterfaceMembers.kt")
+    public void testPushInterfaceMembers() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushInterfaceMembers.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushInterfaceMembersAndMakeAbstract.kt")
+    public void testPushInterfaceMembersAndMakeAbstract() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushInterfaceMembersAndMakeAbstract.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushSuperInterfaces.kt")
+    public void testPushSuperInterfaces() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushSuperInterfaces.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("pushSuperInterfacesWithGenerics.kt")
+    public void testPushSuperInterfacesWithGenerics() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/pushDown/pushSuperInterfacesWithGenerics.kt");
+        doTest(fileName);
+    }
+}