Minor. Use util function getResolutionScope()

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/BasicCompletionSession.kt

@@ -236,7 +236,7 @@ class BasicCompletionSession(configuration: CompletionSessionConfiguration,
                 // if "this" is parsed correctly in the current context - insert it and all this@xxx items
                     "this" -> {
                         if (expression != null) {
-                            collector.addElements(thisExpressionItems(bindingContext, expression, prefix).map { it.createLookupElement() })
+                            collector.addElements(thisExpressionItems(bindingContext, expression, prefix, resolutionFacade).map { it.createLookupElement() })
                         }
                         else {
                             // for completion in secondary constructor delegation call

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt

@@ -29,6 +29,8 @@ import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
 import org.jetbrains.kotlin.idea.JetIcons
 import org.jetbrains.kotlin.idea.completion.handlers.CastReceiverInsertHandler
 import org.jetbrains.kotlin.idea.completion.handlers.WithTailInsertHandler
+import org.jetbrains.kotlin.idea.core.getResolutionScope
+import org.jetbrains.kotlin.idea.resolve.ResolutionFacade
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.idea.util.ShortenReferences
 import org.jetbrains.kotlin.idea.util.findLabelAndCall
@@ -40,6 +42,7 @@ import org.jetbrains.kotlin.renderer.DescriptorRenderer
 import org.jetbrains.kotlin.renderer.render
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.inline.InlineUtil
+import org.jetbrains.kotlin.resolve.scopes.utils.asJetScope
 import org.jetbrains.kotlin.types.JetType
 import org.jetbrains.kotlin.types.typeUtil.TypeNullability
 import org.jetbrains.kotlin.types.typeUtil.nullability
@@ -185,13 +188,13 @@ class ThisItemLookupObject(val receiverParameter: ReceiverParameterDescriptor, v
 fun ThisItemLookupObject.createLookupElement() = createKeywordElement("this", labelName.labelNameToTail(), lookupObject = this)
         .withTypeText(DescriptorRenderer.SHORT_NAMES_IN_TYPES.renderType(receiverParameter.type))
 
-fun thisExpressionItems(bindingContext: BindingContext, position: JetExpression, prefix: String): Collection<ThisItemLookupObject> {
-    val scope = bindingContext[BindingContext.RESOLUTION_SCOPE, position] ?: return listOf()
+fun thisExpressionItems(bindingContext: BindingContext, position: JetExpression, prefix: String, resolutionFacade: ResolutionFacade): Collection<ThisItemLookupObject> {
+    val scope = position.getResolutionScope(bindingContext, resolutionFacade)
 
     val psiFactory = JetPsiFactory(position)
 
     val result = ArrayList<ThisItemLookupObject>()
-    for ((receiver, expressionFactory) in scope.getImplicitReceiversWithInstanceToExpression()) {
+    for ((receiver, expressionFactory) in scope.asJetScope().getImplicitReceiversWithInstanceToExpression()) {
         if (expressionFactory == null) continue
         // if prefix does not start with "this@" do not include immediate this in the form with label
         val expression = expressionFactory.createExpression(psiFactory, shortThis = !prefix.startsWith("this@")) as? JetThisExpression ?: continue

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/smart/SmartCompletion.kt

@@ -220,7 +220,7 @@ class SmartCompletion(
 
     private fun MutableCollection<LookupElement>.addThisItems(place: JetExpression, expectedInfos: Collection<ExpectedInfo>, smartCastCalculator: SmartCastCalculator) {
         if (shouldCompleteThisItems(prefixMatcher)) {
-            val items = thisExpressionItems(bindingContext, place, prefixMatcher.getPrefix())
+            val items = thisExpressionItems(bindingContext, place, prefixMatcher.getPrefix(), resolutionFacade)
             for (item in items) {
                 val types = smartCastCalculator.types(item.receiverParameter).map { FuzzyType(it, emptyList()) }
                 val classifier = { expectedInfo: ExpectedInfo -> types.classifyExpectedInfo(expectedInfo) }

idea/src/org/jetbrains/kotlin/idea/quickfix/AutoImportFix.kt

@@ -34,13 +34,13 @@ import org.jetbrains.kotlin.idea.actions.KotlinAddImportAction
 import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.caches.resolve.getResolveScope
 import org.jetbrains.kotlin.idea.core.KotlinIndicesHelper
+import org.jetbrains.kotlin.idea.core.getResolutionScope
 import org.jetbrains.kotlin.idea.core.isVisible
 import org.jetbrains.kotlin.idea.project.ProjectStructureUtil
 import org.jetbrains.kotlin.psi.JetFile
 import org.jetbrains.kotlin.psi.JetPsiUtil
 import org.jetbrains.kotlin.psi.JetSimpleNameExpression
 import org.jetbrains.kotlin.psi.psiUtil.isImportDirectiveExpression
-import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 import org.jetbrains.kotlin.utils.CachedValueProperty
 import java.util.*
@@ -119,8 +119,8 @@ public class AutoImportFix(element: JetSimpleNameExpression) : JetHintAction<Jet
         val diagnostics = bindingContext.getDiagnostics().forElement(element)
         if (!diagnostics.any { it.getFactory() in ERRORS }) return listOf()
 
-        val resolutionScope = bindingContext[BindingContext.RESOLUTION_SCOPE, element] ?: return listOf()
-        val containingDescriptor = resolutionScope.getContainingDeclaration()
+        val resolutionScope = element.getResolutionScope(bindingContext, resolutionFacade)
+        val containingDescriptor = resolutionScope.ownerDescriptor
 
         fun isVisible(descriptor: DeclarationDescriptor): Boolean {
             if (descriptor is DeclarationDescriptorWithVisibility) {