Refactor: move utils related to expect/actual declarations and MPPs

Move them to 'idea-analysis' module

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/project/multiplatformUtil.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.caches.project
+
+import com.intellij.openapi.externalSystem.service.project.IdeModifiableModelsProvider
+import com.intellij.openapi.externalSystem.service.project.IdeModifiableModelsProviderImpl
+import com.intellij.openapi.module.Module
+import com.intellij.openapi.roots.ProjectRootModificationTracker
+import com.intellij.psi.util.CachedValueProvider
+import org.jetbrains.kotlin.analyzer.ModuleInfo
+import org.jetbrains.kotlin.caches.resolve.KotlinCacheService
+import org.jetbrains.kotlin.descriptors.ModuleDescriptor
+
+fun Module.findImplementingModules(modelsProvider: IdeModifiableModelsProvider) =
+    modelsProvider.modules.filter { name in it.findImplementedModuleNames(modelsProvider) }
+
+val Module.implementingModules: List<Module>
+    get() = cached(CachedValueProvider {
+        CachedValueProvider.Result(
+            findImplementingModules(IdeModifiableModelsProviderImpl(project)),
+            ProjectRootModificationTracker.getInstance(project)
+        )
+    })
+
+private fun Module.getModuleInfo(baseModuleSourceInfo: ModuleSourceInfo): ModuleSourceInfo? =
+    when (baseModuleSourceInfo) {
+        is ModuleProductionSourceInfo -> productionSourceInfo()
+        is ModuleTestSourceInfo -> testSourceInfo()
+        else -> null
+    }
+
+private fun Module.findImplementingModuleInfos(moduleSourceInfo: ModuleSourceInfo): List<ModuleSourceInfo> {
+    val modelsProvider = IdeModifiableModelsProviderImpl(project)
+    val implementingModules = findImplementingModules(modelsProvider)
+    return implementingModules.mapNotNull { it.getModuleInfo(moduleSourceInfo) }
+}
+
+val ModuleDescriptor.implementingDescriptors: List<ModuleDescriptor>
+    get() {
+        val moduleSourceInfo = getCapability(ModuleInfo.Capability) as? ModuleSourceInfo ?: return emptyList()
+        val module = moduleSourceInfo.module
+        return module.cached(CachedValueProvider {
+            val implementingModuleInfos = module.findImplementingModuleInfos(moduleSourceInfo)
+            val implementingModuleDescriptors = implementingModuleInfos.mapNotNull {
+                KotlinCacheService.getInstance(module.project).getResolutionFacadeByModuleInfo(it, it.platform)?.moduleDescriptor
+            }
+            CachedValueProvider.Result(
+                implementingModuleDescriptors,
+                *(implementingModuleInfos.map { it.createModificationTracker() } +
+                        ProjectRootModificationTracker.getInstance(module.project)).toTypedArray()
+            )
+        })
+    }
+
+val ModuleDescriptor.implementedDescriptors: List<ModuleDescriptor>
+    get() {
+        val moduleSourceInfo = getCapability(ModuleInfo.Capability) as? ModuleSourceInfo ?: return emptyList()
+
+        return moduleSourceInfo.expectedBy.mapNotNull {
+            KotlinCacheService.getInstance(moduleSourceInfo.module.project)
+                .getResolutionFacadeByModuleInfo(it, it.platform)?.moduleDescriptor
+        }
+    }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/util/expectActualUtil.kt

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.util
+
+import com.intellij.openapi.module.Module
+import org.jetbrains.kotlin.analyzer.ModuleInfo
+import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
+import org.jetbrains.kotlin.idea.caches.project.implementedDescriptors
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
+import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
+import org.jetbrains.kotlin.idea.core.toDescriptor
+import org.jetbrains.kotlin.idea.search.usagesSearch.descriptor
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtDeclaration
+import org.jetbrains.kotlin.psi.KtNamedDeclaration
+import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
+import org.jetbrains.kotlin.psi.psiUtil.hasExpectModifier
+import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
+import org.jetbrains.kotlin.resolve.descriptorUtil.module
+import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
+import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver
+import org.jetbrains.kotlin.utils.addToStdlib.safeAs
+
+internal fun MemberDescriptor.expectedDescriptors() = module.implementedDescriptors.mapNotNull { it.declarationOf(this) }
+
+// TODO: Sort out the cases with multiple expected descriptors
+fun MemberDescriptor.expectedDescriptor() = expectedDescriptors().firstOrNull()
+
+fun KtDeclaration.expectedDeclarationIfAny(): KtDeclaration? {
+    val expectedDescriptor = (toDescriptor() as? MemberDescriptor)?.expectedDescriptor() ?: return null
+    return DescriptorToSourceUtils.descriptorToDeclaration(expectedDescriptor) as? KtDeclaration
+}
+
+fun KtDeclaration.isExpectedOrExpectedClassMember(): Boolean {
+    if (hasExpectModifier()) return true
+    if (this is KtClassOrObject) return this.isExpected()
+
+    return containingClassOrObject?.isExpected() == true
+}
+
+fun KtClassOrObject.isExpected(): Boolean {
+    return this.hasExpectModifier() || this.descriptor.safeAs<ClassDescriptor>()?.isExpect == true
+}
+
+fun DeclarationDescriptor.liftToExpected(): DeclarationDescriptor? {
+    if (this is MemberDescriptor) {
+        return when {
+            isExpect -> this
+            isActual -> expectedDescriptor()
+            else -> null
+        }
+    }
+
+    if (this is ValueParameterDescriptor) {
+        val containingExpectedDescriptor = containingDeclaration.liftToExpected() as? CallableDescriptor ?: return null
+        return containingExpectedDescriptor.valueParameters.getOrNull(index)
+    }
+
+    return null
+}
+
+fun KtDeclaration.liftToExpected(): KtDeclaration? {
+    val descriptor = resolveToDescriptorIfAny()
+    val expectedDescriptor = descriptor?.liftToExpected() ?: return null
+    return DescriptorToSourceUtils.descriptorToDeclaration(expectedDescriptor) as? KtDeclaration
+}
+
+fun ModuleDescriptor.hasDeclarationOf(descriptor: MemberDescriptor) = declarationOf(descriptor) != null
+
+private fun ModuleDescriptor.declarationOf(descriptor: MemberDescriptor): DeclarationDescriptor? =
+    with(ExpectedActualResolver) {
+        val expectedCompatibilityMap = findExpectedForActual(descriptor, this@declarationOf)
+        expectedCompatibilityMap?.get(ExpectedActualResolver.Compatibility.Compatible)?.firstOrNull()
+                ?: expectedCompatibilityMap?.values?.flatten()?.firstOrNull()
+    }
+
+fun ModuleDescriptor.hasActualsFor(descriptor: MemberDescriptor) =
+    actualsFor(descriptor).isNotEmpty()
+
+fun ModuleDescriptor.actualsFor(descriptor: MemberDescriptor, checkCompatible: Boolean = false): List<DeclarationDescriptor> =
+    with(ExpectedActualResolver) {
+        if (checkCompatible) {
+            descriptor.findCompatibleActualForExpected(this@actualsFor)
+        } else {
+            descriptor.findAnyActualForExpected(this@actualsFor)
+        }
+    }
+
+private fun DeclarationDescriptor.actualsForExpected(): Collection<DeclarationDescriptor> {
+    if (this is MemberDescriptor) {
+        if (!this.isExpect) return emptyList()
+
+        return module.implementingDescriptors.flatMap { it.actualsFor(this) }
+    }
+
+    if (this is ValueParameterDescriptor) {
+        return containingDeclaration.actualsForExpected().mapNotNull { (it as? CallableDescriptor)?.valueParameters?.getOrNull(index) }
+    }
+
+    return emptyList()
+}
+
+// null means "any platform" here
+fun KtDeclaration.actualsForExpected(module: Module? = null): Set<KtDeclaration> =
+    resolveToDescriptorIfAny(BodyResolveMode.FULL)
+        ?.actualsForExpected()
+        ?.filter { module == null || (it.module.getCapability(ModuleInfo.Capability) as? ModuleSourceInfo)?.module == module }
+        ?.mapNotNullTo(LinkedHashSet()) {
+            DescriptorToSourceUtils.descriptorToDeclaration(it) as? KtDeclaration
+        } ?: emptySet()
+
+
+fun KtNamedDeclaration.isExpectDeclaration(): Boolean =
+    (toDescriptor() as? MemberDescriptor)?.isExpect == true
+
+fun KtNamedDeclaration.isActualDeclaration(): Boolean =
+    (toDescriptor() as? MemberDescriptor)?.isActual == true

idea/idea-jvm/src/org/jetbrains/kotlin/idea/run/KotlinMultiplatformJUnitRecognizer.kt

@@ -24,16 +24,13 @@ import org.jetbrains.kotlin.descriptors.ClassifierDescriptorWithTypeParameters
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.TypeAliasDescriptor
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationWithTarget
-import org.jetbrains.kotlin.idea.caches.resolve.analyze
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
-import org.jetbrains.kotlin.idea.facet.implementingDescriptors
 import org.jetbrains.kotlin.idea.project.targetPlatform
 import org.jetbrains.kotlin.idea.util.module
-import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.descriptorUtil.classId
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
-import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.resolve.scopes.getDescriptorsFiltered
 

idea/idea-jvm/src/org/jetbrains/kotlin/idea/run/KotlinRunConfigurationProducer.kt

@@ -29,8 +29,8 @@ import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.config.TargetPlatformKind
 import org.jetbrains.kotlin.fileClasses.javaFileFacadeFqName
 import org.jetbrains.kotlin.idea.MainFunctionDetector
+import org.jetbrains.kotlin.idea.caches.project.implementingModules
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
-import org.jetbrains.kotlin.idea.facet.implementingModules
 import org.jetbrains.kotlin.idea.project.TargetPlatformDetector
 import org.jetbrains.kotlin.idea.project.targetPlatform
 import org.jetbrains.kotlin.idea.util.ProjectRootsUtil

idea/src/org/jetbrains/kotlin/idea/CommonModuleResolveScopeEnlarger.kt

@@ -16,7 +16,7 @@ import com.intellij.psi.ResolveScopeEnlarger
 import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.psi.search.SearchScope
 import org.jetbrains.kotlin.config.TargetPlatformKind
-import org.jetbrains.kotlin.idea.facet.findImplementingModules
+import org.jetbrains.kotlin.idea.caches.project.findImplementingModules
 import org.jetbrains.kotlin.idea.project.targetPlatform
 
 class CommonModuleResolveScopeEnlarger : ResolveScopeEnlarger() {

idea/src/org/jetbrains/kotlin/idea/codeInsight/GotoSuperActionHandler.kt

@@ -22,7 +22,7 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.idea.KotlinBundle
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
 import org.jetbrains.kotlin.idea.core.getDirectlyOverriddenDeclarations
-import org.jetbrains.kotlin.idea.highlighter.markers.expectedDeclarationIfAny
+import org.jetbrains.kotlin.idea.util.expectedDeclarationIfAny
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.hasActualModifier
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode

idea/src/org/jetbrains/kotlin/idea/facet/facetUtils.kt

@@ -122,57 +122,6 @@ val mavenLibraryIdToPlatform: Map<String, TargetPlatformKind<*>> by lazy {
             .toMap()
 }
 
-internal fun Module.findImplementingModules(modelsProvider: IdeModifiableModelsProvider) =
-    modelsProvider.modules.filter { name in it.findImplementedModuleNames(modelsProvider) }
-
-val Module.implementingModules: List<Module>
-    get() = cached(CachedValueProvider {
-        CachedValueProvider.Result(
-                findImplementingModules(IdeModifiableModelsProviderImpl(project)),
-                ProjectRootModificationTracker.getInstance(project)
-        )
-    })
-
-private fun Module.getModuleInfo(baseModuleSourceInfo: ModuleSourceInfo): ModuleSourceInfo? =
-    when (baseModuleSourceInfo) {
-        is ModuleProductionSourceInfo -> productionSourceInfo()
-        is ModuleTestSourceInfo -> testSourceInfo()
-        else -> null
-    }
-
-private fun Module.findImplementingModuleInfos(moduleSourceInfo: ModuleSourceInfo): List<ModuleSourceInfo> {
-    val modelsProvider = IdeModifiableModelsProviderImpl(project)
-    val implementingModules = findImplementingModules(modelsProvider)
-    return implementingModules.mapNotNull { it.getModuleInfo(moduleSourceInfo) }
-}
-
-val ModuleDescriptor.implementingDescriptors: List<ModuleDescriptor>
-    get() {
-        val moduleSourceInfo = getCapability(ModuleInfo.Capability) as? ModuleSourceInfo ?: return emptyList()
-        val module = moduleSourceInfo.module
-        return module.cached(CachedValueProvider {
-            val implementingModuleInfos = module.findImplementingModuleInfos(moduleSourceInfo)
-            val implementingModuleDescriptors = implementingModuleInfos.mapNotNull {
-                KotlinCacheService.getInstance(module.project).getResolutionFacadeByModuleInfo(it, it.platform)?.moduleDescriptor
-            }
-            CachedValueProvider.Result(
-                    implementingModuleDescriptors,
-                    *(implementingModuleInfos.map { it.createModificationTracker() } +
-                      ProjectRootModificationTracker.getInstance(module.project)).toTypedArray()
-            )
-        })
-    }
-
-val ModuleDescriptor.implementedDescriptors: List<ModuleDescriptor>
-    get() {
-        val moduleSourceInfo = getCapability(ModuleInfo.Capability) as? ModuleSourceInfo ?: return emptyList()
-
-        return moduleSourceInfo.expectedBy.mapNotNull {
-            KotlinCacheService.getInstance(moduleSourceInfo.module.project)
-                .getResolutionFacadeByModuleInfo(it, it.platform)?.moduleDescriptor
-        }
-    }
-
 fun Module.getOrCreateFacet(modelsProvider: IdeModifiableModelsProvider,
                             useProjectSettings: Boolean,
                             commitModel: Boolean = false): KotlinFacet {

idea/src/org/jetbrains/kotlin/idea/goto/KotlinExpectOrActualGotoRelatedProvider.kt

@@ -19,11 +19,7 @@ package org.jetbrains.kotlin.idea.goto
 import com.intellij.navigation.GotoRelatedItem
 import com.intellij.navigation.GotoRelatedProvider
 import com.intellij.psi.PsiElement
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
+import org.jetbrains.kotlin.idea.util.*
-import org.jetbrains.kotlin.idea.highlighter.markers.expectedDeclarationIfAny
-import org.jetbrains.kotlin.idea.highlighter.markers.isActualDeclaration
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectDeclaration
-import org.jetbrains.kotlin.idea.util.module
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import org.jetbrains.kotlin.psi.psiUtil.getParentOfTypeAndBranch
 

idea/src/org/jetbrains/kotlin/idea/highlighter/PlatformExpectedAnnotator.kt

@@ -21,9 +21,9 @@ import com.intellij.lang.annotation.Annotator
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.caches.resolve.KotlinCacheService
 import org.jetbrains.kotlin.descriptors.MemberDescriptor
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
 import org.jetbrains.kotlin.idea.core.toDescriptor
-import org.jetbrains.kotlin.idea.facet.implementingDescriptors
 import org.jetbrains.kotlin.idea.project.TargetPlatformDetector
 import org.jetbrains.kotlin.incremental.components.ExpectActualTracker
 import org.jetbrains.kotlin.psi.KtClassOrObject

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

@@ -18,37 +18,18 @@ package org.jetbrains.kotlin.idea.highlighter.markers
 
 import com.intellij.codeInsight.daemon.impl.PsiElementListNavigator
 import com.intellij.ide.util.DefaultPsiElementCellRenderer
-import com.intellij.openapi.module.Module
 import com.intellij.psi.PsiElement
-import org.jetbrains.kotlin.analyzer.ModuleInfo
+import org.jetbrains.kotlin.descriptors.MemberDescriptor
-import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
-import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
-import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.idea.core.toDescriptor
-import org.jetbrains.kotlin.idea.facet.implementingDescriptors
+import org.jetbrains.kotlin.idea.util.actualsForExpected
+import org.jetbrains.kotlin.idea.util.hasActualsFor
 import org.jetbrains.kotlin.psi.KtDeclaration
-import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
 import org.jetbrains.kotlin.resolve.MultiTargetPlatform
-import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.getMultiTargetPlatform
-import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
-import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver
 import java.awt.event.MouseEvent
 
-fun ModuleDescriptor.hasActualsFor(descriptor: MemberDescriptor) =
-        actualsFor(descriptor).isNotEmpty()
-
-fun ModuleDescriptor.actualsFor(descriptor: MemberDescriptor, checkCompatible: Boolean = false): List<DeclarationDescriptor> =
-        with(ExpectedActualResolver) {
-            if (checkCompatible) {
-                descriptor.findCompatibleActualForExpected(this@actualsFor)
-            }
-            else {
-                descriptor.findAnyActualForExpected(this@actualsFor)
-            }
-        }
-
 fun getPlatformActualTooltip(declaration: KtDeclaration?): String? {
     val descriptor = declaration?.toDescriptor() as? MemberDescriptor ?: return null
     val commonModuleDescriptor = declaration.containingKtFile.findModuleDescriptor()
@@ -75,27 +56,4 @@ fun navigateToPlatformActual(e: MouseEvent?, declaration: KtDeclaration?) {
                                         "Choose actual for ${declaration.name}",
                                         "Actuals for ${declaration.name}",
                                         renderer)
-}
+}
-
-private fun DeclarationDescriptor.actualsForExpected(): Collection<DeclarationDescriptor> {
-    if (this is MemberDescriptor) {
-        if (!this.isExpect) return emptyList()
-
-        return module.implementingDescriptors.flatMap { it.actualsFor(this) }
-    }
-
-    if (this is ValueParameterDescriptor) {
-        return containingDeclaration.actualsForExpected().mapNotNull { (it as? CallableDescriptor)?.valueParameters?.getOrNull(index) }
-    }
-
-    return emptyList()
-}
-
-// null means "any platform" here
-internal fun KtDeclaration.actualsForExpected(module: Module? = null): Set<KtDeclaration> =
-    resolveToDescriptorIfAny(BodyResolveMode.FULL)
-        ?.actualsForExpected()
-        ?.filter { module == null || (it.module.getCapability(ModuleInfo.Capability) as? ModuleSourceInfo)?.module == module }
-        ?.mapNotNullTo(LinkedHashSet()) {
-            DescriptorToSourceUtils.descriptorToDeclaration(it) as? KtDeclaration
-        } ?: emptySet()

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

@@ -16,29 +16,13 @@
 
 package org.jetbrains.kotlin.idea.highlighter.markers
 
-import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.descriptors.MemberDescriptor
+import org.jetbrains.kotlin.idea.caches.project.implementedDescriptors
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
-import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.idea.core.toDescriptor
-import org.jetbrains.kotlin.idea.facet.implementedDescriptors
+import org.jetbrains.kotlin.idea.util.expectedDeclarationIfAny
-import org.jetbrains.kotlin.idea.search.usagesSearch.descriptor
+import org.jetbrains.kotlin.idea.util.hasDeclarationOf
-import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtDeclaration
-import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
-import org.jetbrains.kotlin.psi.psiUtil.hasExpectModifier
-import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
-import org.jetbrains.kotlin.resolve.descriptorUtil.module
-import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver
-import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver.Compatibility.*
-import org.jetbrains.kotlin.utils.addToStdlib.safeAs
-
-fun ModuleDescriptor.hasDeclarationOf(descriptor: MemberDescriptor) = declarationOf(descriptor) != null
-
-private fun ModuleDescriptor.declarationOf(descriptor: MemberDescriptor): DeclarationDescriptor? =
-    with(ExpectedActualResolver) {
-        val expectedCompatibilityMap = findExpectedForActual(descriptor, this@declarationOf)
-        expectedCompatibilityMap?.get(Compatible)?.firstOrNull() ?: expectedCompatibilityMap?.values?.flatten()?.firstOrNull()
-    }
 
 fun getExpectedDeclarationTooltip(declaration: KtDeclaration?): String? {
     val descriptor = declaration?.toDescriptor() as? MemberDescriptor ?: return null
@@ -52,48 +36,4 @@ fun getExpectedDeclarationTooltip(declaration: KtDeclaration?): String? {
 
 fun navigateToExpectedDeclaration(declaration: KtDeclaration?) {
     declaration?.expectedDeclarationIfAny()?.navigate(false)
-}
-
-internal fun MemberDescriptor.expectedDescriptors() = module.implementedDescriptors.mapNotNull { it.declarationOf(this) }
-
-// TODO: Sort out the cases with multiple expected descriptors
-internal fun MemberDescriptor.expectedDescriptor() = expectedDescriptors().firstOrNull()
-
-internal fun KtDeclaration.expectedDeclarationIfAny(): KtDeclaration? {
-    val expectedDescriptor = (toDescriptor() as? MemberDescriptor)?.expectedDescriptor() ?: return null
-    return DescriptorToSourceUtils.descriptorToDeclaration(expectedDescriptor) as? KtDeclaration
-}
-
-internal fun KtDeclaration.isExpectedOrExpectedClassMember(): Boolean {
-    if (hasExpectModifier()) return true
-    if (this is KtClassOrObject) return this.isExpected()
-
-    return containingClassOrObject?.isExpected() == true
-}
-
-internal fun KtClassOrObject.isExpected(): Boolean {
-    return this.hasExpectModifier() || this.descriptor.safeAs<ClassDescriptor>()?.isExpect == true
-}
-
-internal fun DeclarationDescriptor.liftToExpected(): DeclarationDescriptor? {
-    if (this is MemberDescriptor) {
-        return when {
-            isExpect -> this
-            isActual -> expectedDescriptor()
-            else -> null
-        }
-    }
-
-    if (this is ValueParameterDescriptor) {
-        val containingExpectedDescriptor = containingDeclaration.liftToExpected() as? CallableDescriptor ?: return null
-        return containingExpectedDescriptor.valueParameters.getOrNull(index)
-    }
-
-    return null
-}
-
-internal fun KtDeclaration.liftToExpected(): KtDeclaration? {
-    val descriptor = resolveToDescriptorIfAny()
-    val expectedDescriptor = descriptor?.liftToExpected() ?: return null
-    return DescriptorToSourceUtils.descriptorToDeclaration(expectedDescriptor) as? KtDeclaration
 }

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

@@ -33,17 +33,16 @@ import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
 import org.jetbrains.kotlin.descriptors.MemberDescriptor
 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.lightClasses.KtFakeLightClass
 import org.jetbrains.kotlin.idea.caches.lightClasses.KtFakeLightMethod
+import org.jetbrains.kotlin.idea.caches.project.implementedDescriptors
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
+import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
 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.implementedDescriptors
-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.idea.util.*
-import org.jetbrains.kotlin.idea.util.module
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getPrevSiblingIgnoringWhitespaceAndComments
@@ -131,12 +130,6 @@ class KotlinLineMarkerProvider : LineMarkerProvider {
     }
 }
 
-internal fun KtNamedDeclaration.isExpectDeclaration(): Boolean =
-        (toDescriptor() as? MemberDescriptor)?.isExpect == true
-
-internal fun KtNamedDeclaration.isActualDeclaration(): Boolean =
-        (toDescriptor() as? MemberDescriptor)?.isActual == true
-
 private val OVERRIDING_MARK: Icon = AllIcons.Gutter.OverridingMethod
 private val IMPLEMENTING_MARK: Icon = AllIcons.Gutter.ImplementingMethod
 private val OVERRIDDEN_MARK: Icon = AllIcons.Gutter.OverridenMethod

idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt

@@ -39,14 +39,13 @@ import org.jetbrains.kotlin.asJava.toLightMethods
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.annotations.Annotated
 import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
+import org.jetbrains.kotlin.idea.caches.project.implementingDescriptors
 import org.jetbrains.kotlin.idea.caches.resolve.findModuleDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.idea.core.isInheritable
 import org.jetbrains.kotlin.idea.core.toDescriptor
-import org.jetbrains.kotlin.idea.facet.implementingDescriptors
 import org.jetbrains.kotlin.idea.findUsages.KotlinFindUsagesHandlerFactory
 import org.jetbrains.kotlin.idea.findUsages.handlers.KotlinFindClassUsagesHandler
-import org.jetbrains.kotlin.idea.highlighter.markers.hasActualsFor
 import org.jetbrains.kotlin.idea.imports.importableFqName
 import org.jetbrains.kotlin.idea.quickfix.RemoveUnusedFunctionParameterFix
 import org.jetbrains.kotlin.idea.references.mainReference
@@ -58,8 +57,8 @@ import org.jetbrains.kotlin.idea.search.usagesSearch.getAccessorNames
 import org.jetbrains.kotlin.idea.search.usagesSearch.getClassNameForCompanionObject
 import org.jetbrains.kotlin.idea.stubindex.KotlinSourceFilterScope
 import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
+import org.jetbrains.kotlin.idea.util.hasActualsFor
 import org.jetbrains.kotlin.lexer.KtTokens
-import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.*
 import org.jetbrains.kotlin.resolve.DescriptorUtils

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

@@ -26,10 +26,10 @@ import com.intellij.refactoring.util.CommonRefactoringUtil
 import com.intellij.refactoring.util.RefactoringDescriptionLocation
 import org.jetbrains.kotlin.asJava.unwrapped
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.runSynchronouslyWithProgress
 import org.jetbrains.kotlin.idea.search.declarationsSearch.HierarchySearchRequest
 import org.jetbrains.kotlin.idea.search.declarationsSearch.searchInheritors
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.KtClass
 import org.jetbrains.kotlin.psi.KtObjectDeclaration

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

@@ -19,8 +19,8 @@ package org.jetbrains.kotlin.idea.intentions
 import com.intellij.codeInspection.CleanupLocalInspectionTool
 import com.intellij.codeInspection.ProblemHighlightType
 import com.intellij.openapi.editor.Editor
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectedOrExpectedClassMember
 import org.jetbrains.kotlin.idea.inspections.IntentionBasedInspection
+import org.jetbrains.kotlin.idea.util.isExpectedOrExpectedClassMember
 import org.jetbrains.kotlin.psi.KtPrimaryConstructor
 import org.jetbrains.kotlin.psi.psiUtil.containingClass
 

idea/src/org/jetbrains/kotlin/idea/intentions/declarations/ConvertMemberToExtensionIntention.kt

@@ -33,15 +33,15 @@ import org.jetbrains.kotlin.asJava.toLightMethods
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
 import org.jetbrains.kotlin.idea.core.*
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectedOrExpectedClassMember
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.intentions.SelfTargetingRangeIntention
 import org.jetbrains.kotlin.idea.quickfix.createFromUsage.callableBuilder.getReturnTypeReference
 import org.jetbrains.kotlin.idea.refactoring.withExpectedActuals
 import org.jetbrains.kotlin.idea.references.KtReference
 import org.jetbrains.kotlin.idea.util.ImportInsertHelper
+import org.jetbrains.kotlin.idea.util.actualsForExpected
 import org.jetbrains.kotlin.idea.util.application.runWriteAction
+import org.jetbrains.kotlin.idea.util.isExpectedOrExpectedClassMember
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.*

idea/src/org/jetbrains/kotlin/idea/js/jsUtils.kt

@@ -19,8 +19,8 @@ package org.jetbrains.kotlin.idea.js
 import com.intellij.openapi.module.Module
 import com.intellij.openapi.roots.CompilerModuleExtension
 import org.jetbrains.jps.util.JpsPathUtil
+import org.jetbrains.kotlin.idea.caches.project.implementingModules
 import org.jetbrains.kotlin.idea.facet.KotlinFacet
-import org.jetbrains.kotlin.idea.facet.implementingModules
 import org.jetbrains.kotlin.idea.framework.isGradleModule
 import org.jetbrains.kotlin.idea.project.TargetPlatformDetector
 import org.jetbrains.kotlin.js.resolve.JsPlatform

idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateActualFix.kt

@@ -26,18 +26,21 @@ import com.intellij.psi.JavaDirectoryService
 import com.intellij.psi.codeStyle.CodeStyleManager
 import org.jetbrains.kotlin.analyzer.ModuleInfo
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
-import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.ClassKind
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.diagnostics.Diagnostic
 import org.jetbrains.kotlin.diagnostics.DiagnosticFactory
 import org.jetbrains.kotlin.diagnostics.Errors
-import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
+import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.core.*
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
 import org.jetbrains.kotlin.idea.quickfix.KotlinQuickFixAction
 import org.jetbrains.kotlin.idea.quickfix.KotlinSingleIntentionActionFactory
 import org.jetbrains.kotlin.idea.refactoring.createKotlinFile
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
+import org.jetbrains.kotlin.idea.util.actualsForExpected
 import org.jetbrains.kotlin.idea.util.application.runWriteAction
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*

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

@@ -35,10 +35,10 @@ import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
 import org.jetbrains.kotlin.idea.core.getDeepestSuperDeclarations
 import org.jetbrains.kotlin.idea.core.getDirectlyOverriddenDeclarations
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
+import org.jetbrains.kotlin.idea.util.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectedOrExpectedClassMember
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.util.getResolutionScope
+import org.jetbrains.kotlin.idea.util.isExpectedOrExpectedClassMember
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.psi.KtBlockExpression
 import org.jetbrains.kotlin.psi.KtDeclaration
 import org.jetbrains.kotlin.psi.KtDeclarationWithBody

idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/KotlinChangeSignatureData.kt

@@ -26,11 +26,11 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.impl.AnonymousFunctionDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectedOrExpectedClassMember
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.KotlinCallableDefinitionUsage
 import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachOverridingElement
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
+import org.jetbrains.kotlin.idea.util.actualsForExpected
+import org.jetbrains.kotlin.idea.util.isExpectedOrExpectedClassMember
 import org.jetbrains.kotlin.psi.KtCallableDeclaration
 import org.jetbrains.kotlin.psi.KtClass
 import org.jetbrains.kotlin.psi.KtDeclaration

idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/KotlinChangeSignatureHandler.kt

@@ -37,8 +37,8 @@ import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor.Kind.SYNTHESIZE
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.codeInsight.CodeInsightUtils
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
-import org.jetbrains.kotlin.idea.highlighter.markers.expectedDescriptor
 import org.jetbrains.kotlin.idea.refactoring.KotlinRefactoringBundle
+import org.jetbrains.kotlin.idea.util.expectedDescriptor
 import org.jetbrains.kotlin.load.java.descriptors.JavaCallableMemberDescriptor
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType

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

@@ -59,13 +59,14 @@ import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.idea.KotlinBundle
 import org.jetbrains.kotlin.idea.KotlinFileType
 import org.jetbrains.kotlin.idea.KotlinLanguage
-import org.jetbrains.kotlin.idea.caches.resolve.*
+import org.jetbrains.kotlin.idea.caches.resolve.analyze
+import org.jetbrains.kotlin.idea.caches.resolve.resolveToCall
+import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
+import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.util.getJavaMemberDescriptor
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
 import org.jetbrains.kotlin.idea.core.*
 import org.jetbrains.kotlin.idea.core.util.showYesNoCancelDialog
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.j2k.IdeaJavaToKotlinServices
 import org.jetbrains.kotlin.idea.project.languageVersionSettings
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinValVar
@@ -73,6 +74,8 @@ import org.jetbrains.kotlin.idea.refactoring.changeSignature.toValVar
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KtPsiClassWrapper
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
+import org.jetbrains.kotlin.idea.util.actualsForExpected
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.idea.util.string.collapseSpaces
 import org.jetbrains.kotlin.j2k.ConverterSettings
 import org.jetbrains.kotlin.j2k.JavaToKotlinConverter

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

@@ -28,7 +28,7 @@ import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
-import org.jetbrains.kotlin.idea.highlighter.markers.expectedDescriptor
+import org.jetbrains.kotlin.idea.util.expectedDescriptor
 import org.jetbrains.kotlin.idea.util.getAllAccessibleFunctions
 import org.jetbrains.kotlin.idea.util.getResolutionScope
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation

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

@@ -37,7 +37,6 @@ import org.jetbrains.kotlin.asJava.namedUnwrappedElement
 import org.jetbrains.kotlin.asJava.unwrapped
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.unsafeResolveToDescriptor
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.refactoring.Pass
 import org.jetbrains.kotlin.idea.refactoring.checkSuperMethods
 import org.jetbrains.kotlin.idea.refactoring.checkSuperMethodsWithPopup
@@ -47,6 +46,7 @@ import org.jetbrains.kotlin.idea.search.declarationsSearch.findDeepestSuperMetho
 import org.jetbrains.kotlin.idea.search.declarationsSearch.findDeepestSuperMethodsNoWrapping
 import org.jetbrains.kotlin.idea.search.declarationsSearch.forEachOverridingMethod
 import org.jetbrains.kotlin.idea.util.application.runReadAction
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import java.lang.IllegalStateException

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

@@ -28,11 +28,11 @@ import com.intellij.usageView.UsageInfo
 import org.jetbrains.kotlin.asJava.namedUnwrappedElement
 import org.jetbrains.kotlin.asJava.toLightMethods
 import org.jetbrains.kotlin.asJava.unwrapped
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinReferencesSearchOptions
 import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinReferencesSearchParameters
 import org.jetbrains.kotlin.idea.search.projectScope
+import org.jetbrains.kotlin.idea.util.actualsForExpected
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType

idea/src/org/jetbrains/kotlin/idea/refactoring/safeDelete/KotlinSafeDeleteProcessor.kt

@@ -43,8 +43,6 @@ import org.jetbrains.kotlin.idea.KotlinBundle
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToCall
 import org.jetbrains.kotlin.idea.core.deleteElementAndCleanParent
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.liftToExpected
 import org.jetbrains.kotlin.idea.refactoring.checkSuperMethods
 import org.jetbrains.kotlin.idea.refactoring.formatClass
 import org.jetbrains.kotlin.idea.refactoring.formatFunction
@@ -53,6 +51,8 @@ import org.jetbrains.kotlin.idea.references.KtReference
 import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinReferencesSearchOptions
 import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinReferencesSearchParameters
 import org.jetbrains.kotlin.idea.search.usagesSearch.processDelegationCallConstructorUsages
+import org.jetbrains.kotlin.idea.util.actualsForExpected
+import org.jetbrains.kotlin.idea.util.liftToExpected
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType

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

@@ -32,12 +32,12 @@ 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.lightClasses.KtFakeLightClass
-import org.jetbrains.kotlin.idea.highlighter.markers.actualsForExpected
-import org.jetbrains.kotlin.idea.highlighter.markers.isExpectedOrExpectedClassMember
 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.actualsForExpected
 import org.jetbrains.kotlin.idea.util.application.runReadAction
+import org.jetbrains.kotlin.idea.util.isExpectedOrExpectedClassMember
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.contains
 import java.util.*