Misc: Support light-methodless members in overrider search

In particular, support line markers for expect-class members
and navigation to expect-class members from corresponding base members

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/lightClasses/KtFakeLightClass.kt

@@ -18,14 +18,19 @@ package org.jetbrains.kotlin.idea.caches.resolve.lightClasses
 
 import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiElementFactory
+import com.intellij.psi.PsiMethod
+import com.intellij.psi.PsiType
 import com.intellij.psi.impl.light.AbstractLightClass
+import com.intellij.psi.impl.light.LightMethod
 import org.jetbrains.kotlin.asJava.classes.KtLightClass
 import org.jetbrains.kotlin.asJava.classes.LightClassInheritanceHelper
+import org.jetbrains.kotlin.asJava.elements.KtLightElement
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.load.java.structure.LightClassOriginKind
 import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 
@@ -58,4 +63,28 @@ class KtFakeLightClass(override val kotlinOrigin: KtClassOrObject) :
         val thisDescriptor = kotlinOrigin.resolveToDescriptorIfAny() as? ClassDescriptor ?: return false
         return if (checkDeep) DescriptorUtils.isSubclass(thisDescriptor, baseDescriptor) else DescriptorUtils.isDirectSubclass(thisDescriptor, baseDescriptor)
     }
+}
+
+class KtFakeLightMethod private constructor(
+        val ktDeclaration: KtNamedDeclaration,
+        ktClassOrObject : KtClassOrObject
+) : LightMethod (
+        ktDeclaration.manager,
+        PsiElementFactory.SERVICE.getInstance(ktDeclaration.project).createMethod(ktDeclaration.name ?: "", PsiType.VOID),
+        KtFakeLightClass(ktClassOrObject),
+        KotlinLanguage.INSTANCE
+), KtLightElement<KtNamedDeclaration, PsiMethod> {
+    override val kotlinOrigin get() = ktDeclaration
+    override val clsDelegate get() = myMethod
+
+    override fun getNavigationElement() = ktDeclaration
+    override fun getIcon(flags: Int) = ktDeclaration.getIcon(flags)
+    override fun getUseScope() = ktDeclaration.useScope
+
+    companion object {
+        fun get(ktDeclaration: KtNamedDeclaration): KtFakeLightMethod? {
+            val ktClassOrObject = ktDeclaration.containingClassOrObject ?: return null
+            return KtFakeLightMethod(ktDeclaration, ktClassOrObject)
+        }
+    }
 }

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

@@ -23,12 +23,13 @@ import com.intellij.psi.search.searches.ClassInheritorsSearch
 import com.intellij.util.EmptyQuery
 import com.intellij.util.Query
 import org.jetbrains.kotlin.asJava.toLightClassWithBuiltinMapping
+import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightClass
 import org.jetbrains.kotlin.idea.util.application.runReadAction
 import org.jetbrains.kotlin.psi.KtClassOrObject
 
 fun HierarchySearchRequest<*>.searchInheritors(): Query<PsiClass> {
     val psiClass: PsiClass = when (originalElement) {
-                                 is KtClassOrObject -> runReadAction { originalElement.toLightClassWithBuiltinMapping() }
+                                 is KtClassOrObject -> runReadAction { originalElement.toLightClassWithBuiltinMapping() ?: KtFakeLightClass(originalElement) }
                                  is PsiClass -> originalElement
                                  else -> null
                              } ?: return EmptyQuery.getEmptyQuery()

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

@@ -29,14 +29,14 @@ import com.intellij.util.EmptyQuery
 import com.intellij.util.MergeQuery
 import com.intellij.util.Processor
 import com.intellij.util.Query
-import org.jetbrains.kotlin.asJava.classes.KtLightClass
-import org.jetbrains.kotlin.asJava.elements.KtLightMethod
 import org.jetbrains.kotlin.asJava.getRepresentativeLightMethod
 import org.jetbrains.kotlin.asJava.toLightMethods
 import org.jetbrains.kotlin.asJava.unwrapped
 import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.isOverridable
+import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightClass
+import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightMethod
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
 import org.jetbrains.kotlin.idea.core.getDeepestSuperDeclarations
@@ -45,10 +45,7 @@ import org.jetbrains.kotlin.idea.search.allScope
 import org.jetbrains.kotlin.idea.search.excludeKotlinSources
 import org.jetbrains.kotlin.idea.search.restrictToKotlinSources
 import org.jetbrains.kotlin.idea.util.application.runReadAction
-import org.jetbrains.kotlin.psi.KtCallableDeclaration
+import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.KtClass
-import org.jetbrains.kotlin.psi.KtDeclaration
-import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import org.jetbrains.kotlin.resolve.source.getPsi
 import org.jetbrains.kotlin.types.substitutions.getTypeSubstitutor
@@ -122,6 +119,17 @@ object PsiMethodOverridingHierarchyTraverser: HierarchyTraverser<PsiMethod> {
     override fun shouldDescend(element: PsiMethod): Boolean = PsiUtil.canBeOverriden(element)
 }
 
+fun PsiElement.toPossiblyFakeLightMethods(): List<PsiMethod> {
+    if (this is PsiMethod) return listOf(this)
+
+    val element = unwrapped ?: return emptyList()
+
+    val lightMethods = element.toLightMethods()
+    if (lightMethods.isNotEmpty()) return lightMethods
+
+    return if (element is KtNamedDeclaration) listOfNotNull(KtFakeLightMethod.get(element)) else emptyList()
+}
+
 private fun forEachKotlinOverride(
         ktClass: KtClass,
         members: List<KtNamedDeclaration>,
@@ -133,7 +141,7 @@ private fun forEachKotlinOverride(
     if (baseDescriptors.isEmpty()) return true
 
     HierarchySearchRequest(ktClass, scope.restrictToKotlinSources(), true).searchInheritors().forEach {
-        val inheritor = (it as? KtLightClass)?.kotlinOrigin ?: return@forEach
+        val inheritor = it.unwrapped as? KtClassOrObject ?: return@forEach
         val inheritorDescriptor = runReadAction { inheritor.unsafeResolveToDescriptor() as ClassDescriptor }
         val substitutor = getTypeSubstitutor(baseClassDescriptor.defaultType, inheritorDescriptor.defaultType) ?: return@forEach
         baseDescriptors.forEach {
@@ -149,16 +157,31 @@ private fun forEachKotlinOverride(
     return true
 }
 
+fun KtNamedDeclaration.forEachOverridingElement(
+        scope: SearchScope = runReadAction { useScope },
+        processor: (PsiElement) -> Boolean
+): Boolean {
+    val ktClass = runReadAction { containingClassOrObject as? KtClass } ?: return true
+
+    toLightMethods().forEach {
+        if (!OverridingMethodsSearch.search(it, scope.excludeKotlinSources(), true).all(processor)) return false
+    }
+
+    return forEachKotlinOverride(ktClass, listOf(this), scope) { _, overrider -> processor(overrider) }
+}
+
 fun PsiMethod.forEachOverridingMethod(
         scope: SearchScope = runReadAction { useScope },
         processor: (PsiMethod) -> Boolean
 ): Boolean {
-    if (!OverridingMethodsSearch.search(this, scope.excludeKotlinSources(), true).forEach(processor)) return false
+    if (this !is KtFakeLightMethod) {
+        if (!OverridingMethodsSearch.search(this, scope.excludeKotlinSources(), true).forEach(processor)) return false
+    }
 
-    val ktMember = (this as? KtLightMethod)?.kotlinOrigin as? KtNamedDeclaration ?: return true
+    val ktMember = this.unwrapped as? KtNamedDeclaration ?: return true
     val ktClass = runReadAction { ktMember.containingClassOrObject as? KtClass } ?: return true
     return forEachKotlinOverride(ktClass, listOf(ktMember), scope) { _, overrider ->
-        val lightMethods = runReadAction { overrider.toLightMethods() }
+        val lightMethods = runReadAction { overrider.toPossiblyFakeLightMethods() }
         lightMethods.all { processor(it) }
     }
 }
@@ -174,9 +197,11 @@ fun PsiMethod.forEachImplementation(
 fun PsiClass.forEachDeclaredMemberOverride(processor: (superMember: PsiElement, overridingMember: PsiElement) -> Boolean) {
     val scope = runReadAction { useScope }
 
-    AllOverridingMethodsSearch.search(this, scope.excludeKotlinSources()).all { processor(it.first, it.second) }
+    if (this !is KtFakeLightClass) {
+        AllOverridingMethodsSearch.search(this, scope.excludeKotlinSources()).all { processor(it.first, it.second) }
+    }
 
-    val ktClass = (this as? KtLightClass)?.kotlinOrigin as? KtClass ?: return
+    val ktClass = unwrapped as? KtClass ?: return
     val members = ktClass.declarations.filterIsInstance<KtNamedDeclaration>() +
                   ktClass.primaryConstructorParameters.filter { it.hasValOrVar() }
     forEachKotlinOverride(ktClass, members, scope, processor)

idea/src/org/jetbrains/kotlin/idea/highlighter/markers/JavaPsiUtils.kt

@@ -21,13 +21,11 @@ import com.intellij.psi.CommonClassNames
 import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiMethod
-import org.jetbrains.kotlin.asJava.LightClassUtil
+import org.jetbrains.kotlin.asJava.*
-import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightClass
-import org.jetbrains.kotlin.psi.KtClass
+import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightMethod
-import org.jetbrains.kotlin.psi.KtFunction
+import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.KtNamedFunction
+import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
-import org.jetbrains.kotlin.psi.KtSecondaryConstructor
 import java.util.*
 
 fun collectContainingClasses(methods: Collection<PsiMethod>): Set<PsiClass> {
@@ -58,7 +56,8 @@ internal fun getPsiMethod(element: PsiElement?): PsiMethod? {
     return when {
         element == null -> null
         element is PsiMethod -> element
-        parent is KtNamedFunction || parent is KtSecondaryConstructor -> LightClassUtil.getLightClassMethod(parent as KtFunction)
+        parent is KtNamedFunction || parent is KtSecondaryConstructor ->
+            LightClassUtil.getLightClassMethod(parent as KtFunction) ?: KtFakeLightMethod.get(parent)
         else -> null
     }
 }

idea/src/org/jetbrains/kotlin/idea/highlighter/markers/KotlinLineMarkerProvider.kt

@@ -34,7 +34,6 @@ import com.intellij.psi.PsiMethod
 import com.intellij.psi.PsiNameIdentifierOwner
 import com.intellij.psi.search.searches.ClassInheritorsSearch
 import org.jetbrains.kotlin.asJava.LightClassUtil
-import org.jetbrains.kotlin.asJava.getAccessorLightMethods
 import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
 import org.jetbrains.kotlin.descriptors.MemberDescriptor
@@ -42,11 +41,13 @@ import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.idea.KotlinIcons
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightClass
+import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightMethod
 import org.jetbrains.kotlin.idea.core.isInheritable
 import org.jetbrains.kotlin.idea.core.isOverridable
 import org.jetbrains.kotlin.idea.core.toDescriptor
 import org.jetbrains.kotlin.idea.facet.implementedDescriptor
 import org.jetbrains.kotlin.idea.facet.implementingDescriptors
+import org.jetbrains.kotlin.idea.search.declarationsSearch.toPossiblyFakeLightMethods
 import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
@@ -271,10 +272,7 @@ private fun collectOverriddenPropertyAccessors(properties: Collection<KtNamedDec
     val mappingToJava = HashMap<PsiElement, KtNamedDeclaration>()
     for (property in properties) {
         if (property.isOverridable()) {
-            val accessorsPsiMethods = property.getAccessorLightMethods()
+            property.toPossiblyFakeLightMethods().forEach { mappingToJava.put(it, property) }
-            for (psiMethod in accessorsPsiMethods) {
-                mappingToJava.put(psiMethod, property)
-            }
             mappingToJava[property] = property
         }
     }
@@ -352,7 +350,7 @@ private fun collectOverriddenFunctions(functions: Collection<KtNamedFunction>, r
     val mappingToJava = HashMap<PsiElement, KtNamedFunction>()
     for (function in functions) {
         if (function.isOverridable()) {
-            val method = LightClassUtil.getLightClassMethod(function)
+            val method = LightClassUtil.getLightClassMethod(function) ?: KtFakeLightMethod.get(function)
             if (method != null) {
                 mappingToJava.put(method, function)
             }

idea/src/org/jetbrains/kotlin/idea/highlighter/markers/OverridenFunctionMarker.kt

@@ -24,18 +24,20 @@ import com.intellij.ide.util.PsiElementListCellRenderer
 import com.intellij.openapi.progress.ProgressIndicator
 import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.project.DumbService
-import com.intellij.psi.*
+import com.intellij.psi.PsiClass
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiMethod
+import com.intellij.psi.PsiModifier
 import com.intellij.psi.search.PsiElementProcessor
 import com.intellij.psi.search.PsiElementProcessorAdapter
 import com.intellij.psi.search.searches.OverridingMethodsSearch
-import com.intellij.psi.util.PsiFormatUtil
 import com.intellij.util.CommonProcessors
 import gnu.trove.THashSet
 import org.jetbrains.kotlin.asJava.elements.KtLightMethod
 import org.jetbrains.kotlin.asJava.elements.isTraitFakeOverride
-import org.jetbrains.kotlin.asJava.toLightMethods
 import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachDeclaredMemberOverride
 import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachOverridingMethod
+import org.jetbrains.kotlin.idea.search.declarationsSearch.toPossiblyFakeLightMethods
 import org.jetbrains.kotlin.idea.util.application.runReadAction
 import java.awt.event.MouseEvent
 import java.util.*
@@ -50,7 +52,7 @@ internal fun <T> getOverriddenDeclarations(mappingToJava: MutableMap<PsiElement,
     for (aClass in classes) {
         aClass.forEachDeclaredMemberOverride { superMember, overridingMember ->
             ProgressManager.checkCanceled()
-            if (overridingMember.toLightMethods().any { !it.isMethodWithDeclarationInOtherClass() }) {
+            if (overridingMember.toPossiblyFakeLightMethods().any { !it.isMethodWithDeclarationInOtherClass() }) {
                 val declaration = mappingToJava[superMember]
                 if (declaration != null) {
                     mappingToJava.remove(superMember)
@@ -67,7 +69,7 @@ internal fun <T> getOverriddenDeclarations(mappingToJava: MutableMap<PsiElement,
 
 fun getOverriddenMethodTooltip(method: PsiMethod): String? {
     val processor = PsiElementProcessor.CollectElementsWithLimit<PsiMethod>(5)
-    OverridingMethodsSearch.search(method, true).forEach(PsiElementProcessorAdapter(processor))
+    method.forEachOverridingMethod(processor = PsiElementProcessorAdapter(processor)::process)
 
     val isAbstract = method.hasModifierProperty(PsiModifier.ABSTRACT)
 
@@ -109,15 +111,7 @@ fun buildNavigateToOverriddenMethodPopup(e: MouseEvent?, element: PsiElement?):
     var overridingJavaMethods = processor.collection.filter { !it.isMethodWithDeclarationInOtherClass() }
     if (overridingJavaMethods.isEmpty()) return null
 
-    val renderedSignatures = overridingJavaMethods.map {
+    val renderer = MethodCellRenderer(false)
-        PsiFormatUtil.formatMethod(it,
-                                   PsiSubstitutor.EMPTY,
-                                   PsiFormatUtil.SHOW_PARAMETERS + PsiFormatUtil.SHOW_FQ_CLASS_NAMES,
-                                   PsiFormatUtil.SHOW_TYPE + PsiFormatUtil.SHOW_FQ_CLASS_NAMES)
-    }
-    val showMethodNames = renderedSignatures.distinct().size > 1
-
-    val renderer = MethodCellRenderer(showMethodNames)
     overridingJavaMethods = overridingJavaMethods.sortedWith(renderer.comparator)
 
     val methodsUpdater = OverridingMethodsUpdater(method, renderer)

idea/src/org/jetbrains/kotlin/idea/highlighter/markers/OverridenPropertyMarker.kt

@@ -33,9 +33,10 @@ import com.intellij.psi.search.searches.OverridingMethodsSearch
 import com.intellij.util.AdapterProcessor
 import com.intellij.util.CommonProcessors
 import com.intellij.util.Function
-import org.jetbrains.kotlin.asJava.LightClassUtil
 import org.jetbrains.kotlin.asJava.getAccessorLightMethods
 import org.jetbrains.kotlin.idea.KotlinBundle
+import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachOverridingMethod
+import org.jetbrains.kotlin.idea.search.declarationsSearch.toPossiblyFakeLightMethods
 import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinDefinitionsSearcher
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
@@ -50,9 +51,9 @@ fun getOverriddenPropertyTooltip(property: KtNamedDeclaration): String? {
             Function { method: PsiMethod? -> method?.containingClass }
     )
 
-    for (method in property.getAccessorLightMethods()) {
+    for (method in property.toPossiblyFakeLightMethods()) {
         if (!overriddenInClassesProcessor.isOverflow) {
-            OverridingMethodsSearch.search(method, true).forEach(consumer)
+            method.forEachOverridingMethod(processor = consumer::process)
         }
     }
 
@@ -85,11 +86,7 @@ fun buildNavigateToPropertyOverriddenDeclarationsPopup(e: MouseEvent?, element:
         return null
     }
 
-    val psiPropertyMethods = when(propertyOrParameter) {
+    val psiPropertyMethods = propertyOrParameter.toPossiblyFakeLightMethods()
-        is KtProperty  -> LightClassUtil.getLightClassPropertyMethods(propertyOrParameter)
-        is KtParameter -> LightClassUtil.getLightClassPropertyMethods(propertyOrParameter)
-        else -> return null
-    }
     val elementProcessor = CommonProcessors.CollectUniquesProcessor<PsiElement>()
     val ktPsiMethodProcessor = Runnable {
         KotlinDefinitionsSearcher.processPropertyImplementationsMethods(

idea/src/org/jetbrains/kotlin/idea/search/ideaExtensions/KotlinDefinitionsSearcher.kt

@@ -16,7 +16,6 @@
 
 package org.jetbrains.kotlin.idea.search.ideaExtensions
 
-import com.intellij.codeInsight.navigation.MethodImplementationsSearch
 import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiMethod
@@ -28,13 +27,14 @@ import com.intellij.psi.search.searches.DefinitionsScopedSearch
 import com.intellij.util.Processor
 import com.intellij.util.QueryExecutor
 import com.intellij.util.containers.ContainerUtil
-import org.jetbrains.kotlin.asJava.LightClassUtil
 import org.jetbrains.kotlin.asJava.classes.KtLightClass
 import org.jetbrains.kotlin.asJava.elements.KtLightMethod
 import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.asJava.unwrapped
 import org.jetbrains.kotlin.idea.caches.resolve.lightClasses.KtFakeLightClass
 import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachImplementation
+import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachOverridingMethod
+import org.jetbrains.kotlin.idea.search.declarationsSearch.toPossiblyFakeLightMethods
 import org.jetbrains.kotlin.idea.util.application.runReadAction
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.contains
@@ -117,29 +117,21 @@ class KotlinDefinitionsSearcher : QueryExecutor<PsiElement, DefinitionsScopedSea
         }
 
         private fun processFunctionImplementations(function: KtFunction, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
-            val psiMethod = runReadAction { LightClassUtil.getLightClassMethod(function) }
+            return runReadAction {
-            return psiMethod?.forEachImplementation(scope, consumer::process) ?: true
+                function.toPossiblyFakeLightMethods().firstOrNull()?.forEachImplementation(scope, consumer::process) ?: true
+            }
         }
 
-        private fun processPropertyImplementations(parameter: KtParameter, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
+        private fun processPropertyImplementations(declaration: KtNamedDeclaration, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
-            val accessorsPsiMethods = runReadAction { LightClassUtil.getLightClassPropertyMethods(parameter) }
+            return runReadAction {
-
+                processPropertyImplementationsMethods(declaration.toPossiblyFakeLightMethods(), scope, consumer)
-            return processPropertyImplementationsMethods(accessorsPsiMethods, scope, consumer)
+            }
         }
 
-        private fun processPropertyImplementations(property: KtProperty, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
+        fun processPropertyImplementationsMethods(accessors: Iterable<PsiMethod>, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
-            val accessorsPsiMethods = runReadAction { LightClassUtil.getLightClassPropertyMethods(property) }
+            return accessors.all { method ->
-
+                method.forEachOverridingMethod(scope) { implementation ->
-            return processPropertyImplementationsMethods(accessorsPsiMethods, scope, consumer)
+                    if (isDelegated(implementation)) return@forEachOverridingMethod true
-        }
-
-        fun processPropertyImplementationsMethods(accessors: LightClassUtil.PropertyAccessorsPsiMethods, scope: SearchScope, consumer: Processor<PsiElement>): Boolean {
-            for (method in accessors) {
-                val implementations = ArrayList<PsiMethod>()
-                MethodImplementationsSearch.getOverridingMethods(method, implementations, scope)
-
-                for (implementation in implementations) {
-                    if (isDelegated(implementation)) continue
 
                     val elementToProcess = runReadAction {
                         val mirrorElement = (implementation as? KtLightMethod)?.kotlinOrigin
@@ -150,12 +142,9 @@ class KotlinDefinitionsSearcher : QueryExecutor<PsiElement, DefinitionsScopedSea
                         }
                     }
 
-                    if (!consumer.process(elementToProcess)) {
+                    consumer.process(elementToProcess)
-                        return false
-                    }
                 }
             }
-            return true
         }
     }
 }

idea/testData/codeInsight/lineMarker/overrideImplement/EnumEntry.kt

@@ -3,5 +3,5 @@ enum class SampleEnum {
         override fun <lineMarker descr="Overrides function in 'SampleEnum'">any</lineMarker>() { super.any() }
     };
 
-    open fun <lineMarker descr="<html><body>Is overridden in <br>&nbsp;&nbsp;&nbsp;&nbsp;Enum constant 'V1' in 'SampleEnum'</body></html>">any</lineMarker>() {}
+    open fun <lineMarker descr="<html><body>Is overridden in <br>&nbsp;&nbsp;&nbsp;&nbsp;SampleEnum.V1</body></html>">any</lineMarker>() {}
 }

idea/testData/multiModuleLineMarker/hierarchyWithExpectClassCommonSide/common/common.kt

@@ -1,9 +1,21 @@
 package test
 
-open class <lineMarker>SimpleParent</lineMarker>
+open class <lineMarker>SimpleParent</lineMarker> {
+    open fun <lineMarker>foo</lineMarker>(n: Int) {}
+    open val <lineMarker>bar</lineMarker>: Int get() = 1
+}
 
-expect open class <lineMarker><lineMarker>ExpectedChild</lineMarker></lineMarker> : SimpleParent
+expect open class <lineMarker><lineMarker>ExpectedChild</lineMarker></lineMarker> : SimpleParent {
+    override fun <lineMarker><lineMarker>foo</lineMarker></lineMarker>(n: Int)
+    override val <lineMarker><lineMarker>bar</lineMarker></lineMarker>: Int
+}
 
-class ExpectedChildChild : ExpectedChild()
+class ExpectedChildChild : ExpectedChild() {
+    override fun <lineMarker>foo</lineMarker>(n: Int) {}
+    override val <lineMarker>bar</lineMarker>: Int get() = 1
+}
 
-class SimpleChild : SimpleParent()
+class SimpleChild : SimpleParent() {
+    override fun <lineMarker>foo</lineMarker>(n: Int) {}
+    override val <lineMarker>bar</lineMarker>: Int get() = 1
+}

idea/testData/multiModuleLineMarker/hierarchyWithExpectClassCommonSide/jvm/jvm.kt

@@ -2,6 +2,12 @@
 
 package test
 
-actual open class ExpectedChild : SimpleParent()
+actual open class ExpectedChild : SimpleParent() {
+    actual override fun foo(n: Int) {}
+    actual override val bar: Int get() = 1
+}
 
-class ExpectedChildChildJvm : ExpectedChild()
+class ExpectedChildChildJvm : ExpectedChild() {
+    override fun foo(n: Int) {}
+    override val bar: Int get() = 1
+}

idea/testData/multiModuleLineMarker/hierarchyWithExpectClassPlatformSide/common/common.kt

@@ -2,10 +2,22 @@
 
 package test
 
-open class <caret>SimpleParent
+open class SimpleParent {
+    open fun foo(n: Int) {}
+    open val bar: Int get() = 1
+}
 
-expect open class ExpectedChild : SimpleParent
+expect open class ExpectedChild : SimpleParent {
+    override fun foo(n: Int)
+    override val bar: Int
+}
 
-class ExpectedChildChild : ExpectedChild()
+class ExpectedChildChild : ExpectedChild() {
+    override fun foo(n: Int) {}
+    override val bar: Int get() = 1
+}
 
-class SimpleChild : SimpleParent()
+class SimpleChild : SimpleParent() {
+    override fun foo(n: Int) {}
+    override val bar: Int get() = 1
+}

idea/testData/multiModuleLineMarker/hierarchyWithExpectClassPlatformSide/jvm/jvm.kt

@@ -1,5 +1,11 @@
 package test
 
-actual open class <lineMarker><lineMarker>ExpectedChild</lineMarker></lineMarker> : SimpleParent()
+actual open class <lineMarker><lineMarker>ExpectedChild</lineMarker></lineMarker> : SimpleParent() {
+    actual override fun <lineMarker><lineMarker><lineMarker>foo</lineMarker></lineMarker></lineMarker>(n: Int) {}
+    actual override val <lineMarker><lineMarker><lineMarker>bar</lineMarker></lineMarker></lineMarker>: Int get() = 1
+}
 
-class ExpectedChildChildJvm : ExpectedChild()
+class ExpectedChildChildJvm : ExpectedChild() {
+    override fun <lineMarker>foo</lineMarker>(n: Int) {}
+    override val <lineMarker>bar</lineMarker>: Int get() = 1
+}

idea/testData/navigation/implementations/multiModule/expectClassFun/common/common.kt

@@ -0,0 +1,20 @@
+package test
+
+open class SimpleParent {
+    open fun foo(n: Int) {}
+}
+
+expect open class ExpectedChild : SimpleParent {
+    override fun <caret>foo(n: Int)
+}
+
+class ExpectedChildChild : ExpectedChild() {
+    override fun foo(n: Int) {}
+}
+
+class SimpleChild : SimpleParent() {
+    override fun foo(n: Int) {}
+}
+
+// REF: [common] (in test.ExpectedChildChild).foo(Int)
+// REF: [jvm] (in test.ExpectedChildChildJvm).foo(Int)

idea/testData/navigation/implementations/multiModule/expectClassFun/jvm/jvm.kt

@@ -0,0 +1,9 @@
+package test
+
+actual open class ExpectedChild : SimpleParent() {
+    actual override fun foo(n: Int) {}
+}
+
+class ExpectedChildChildJvm : ExpectedChild() {
+    override fun foo(n: Int) {}
+}

idea/testData/navigation/implementations/multiModule/expectClassProperty/common/common.kt

@@ -0,0 +1,20 @@
+package test
+
+open class SimpleParent {
+    open val bar: Int get() = 1
+}
+
+expect open class ExpectedChild : SimpleParent {
+    override val <caret>bar: Int
+}
+
+class ExpectedChildChild : ExpectedChild() {
+    override val bar: Int get() = 1
+}
+
+class SimpleChild : SimpleParent() {
+    override val bar: Int get() = 1
+}
+
+// REF: [common] (in test.ExpectedChildChild).bar
+// REF: [jvm] (in test.ExpectedChildChildJvm).bar

idea/testData/navigation/implementations/multiModule/expectClassProperty/jvm/jvm.kt

@@ -0,0 +1,9 @@
+package test
+
+actual open class ExpectedChild : SimpleParent() {
+    actual override val bar: Int get() = 1
+}
+
+class ExpectedChildChildJvm : ExpectedChild() {
+    override val bar: Int get() = 1
+}

idea/testData/navigation/implementations/multiModule/expectClassSuperclassFun/common/common.kt

@@ -0,0 +1,23 @@
+package test
+
+open class SimpleParent {
+    open fun <caret>foo(n: Int) {}
+}
+
+expect open class ExpectedChild : SimpleParent {
+    override fun foo(n: Int)
+}
+
+class ExpectedChildChild : ExpectedChild() {
+    override fun foo(n: Int) {}
+}
+
+class SimpleChild : SimpleParent() {
+    override fun foo(n: Int) {}
+}
+
+// REF: [common] (in test.ExpectedChild).foo(Int)
+// REF: [common] (in test.ExpectedChildChild).foo(Int)
+// REF: [common] (in test.SimpleChild).foo(Int)
+// REF: [jvm] (in test.ExpectedChild).foo(Int)
+// REF: [jvm] (in test.ExpectedChildChildJvm).foo(Int)

idea/testData/navigation/implementations/multiModule/expectClassSuperclassFun/jvm/jvm.kt

@@ -0,0 +1,9 @@
+package test
+
+actual open class ExpectedChild : SimpleParent() {
+    actual override fun foo(n: Int) {}
+}
+
+class ExpectedChildChildJvm : ExpectedChild() {
+    override fun foo(n: Int) {}
+}

idea/testData/navigation/implementations/multiModule/expectClassSuperclassProperty/common/common.kt

@@ -0,0 +1,23 @@
+package test
+
+open class SimpleParent {
+    open val <caret>bar: Int get() = 1
+}
+
+expect open class ExpectedChild : SimpleParent {
+    override val bar: Int
+}
+
+class ExpectedChildChild : ExpectedChild() {
+    override val bar: Int get() = 1
+}
+
+class SimpleChild : SimpleParent() {
+    override val bar: Int get() = 1
+}
+
+// REF: [common] (in test.ExpectedChild).bar
+// REF: [common] (in test.ExpectedChildChild).bar
+// REF: [common] (in test.SimpleChild).bar
+// REF: [jvm] (in test.ExpectedChild).bar
+// REF: [jvm] (in test.ExpectedChildChildJvm).bar

idea/testData/navigation/implementations/multiModule/expectClassSuperclassProperty/jvm/jvm.kt

@@ -0,0 +1,9 @@
+package test
+
+actual open class ExpectedChild : SimpleParent() {
+    actual override val bar: Int get() = 1
+}
+
+class ExpectedChildChildJvm : ExpectedChild() {
+    override val bar: Int get() = 1
+}

idea/tests/org/jetbrains/kotlin/idea/navigation/KotlinGotoImplementationMultiModuleTest.kt

@@ -72,7 +72,23 @@ class KotlinGotoImplementationMultiModuleTest : AbstractMultiModuleTest() {
         doMultiPlatformTest("common.kt")
     }
 
+    fun testExpectClassSuperclassFun() {
+        doMultiPlatformTest("common.kt")
+    }
+
+    fun testExpectClassSuperclassProperty() {
+        doMultiPlatformTest("common.kt")
+    }
+
     fun testExpectClass() {
         doMultiPlatformTest("common.kt")
     }
+
+    fun testExpectClassFun() {
+        doMultiPlatformTest("common.kt")
+    }
+
+    fun testExpectClassProperty() {
+        doMultiPlatformTest("common.kt")
+    }
 }