Avoid counting directory parent for file

compiler/frontend/src/org/jetbrains/kotlin/psi/JetPsiUtil.java

@@ -373,8 +373,13 @@ public class JetPsiUtil {
 
     @Nullable
     @Contract("null, _ -> null")
-    public static PsiElement getTopmostParentOfTypes(@Nullable PsiElement element, @NotNull Class<? extends PsiElement>... parentTypes) {
+    public static PsiElement getTopmostParentOfTypes(
+            @Nullable PsiElement element,
+            @NotNull Class<? extends PsiElement>... parentTypes) {
+        if (element instanceof PsiFile) return null;
+
         PsiElement answer = PsiTreeUtil.getParentOfType(element, parentTypes);
+        if (answer instanceof PsiFile) return answer;
 
         do {
             PsiElement next = PsiTreeUtil.getParentOfType(answer, parentTypes);

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

@@ -21,6 +21,7 @@ import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.IndexNotReadyException
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
 import com.intellij.psi.util.CachedValueProvider
 import com.intellij.psi.util.CachedValuesManager
 import com.intellij.psi.util.PsiModificationTracker
@@ -195,6 +196,8 @@ private object KotlinResolveDataProvider {
     )
 
     fun findAnalyzableParent(element: JetElement): JetElement {
+        if (element is JetFile) return element
+
         val topmostElement = JetPsiUtil.getTopmostParentOfTypes(element, *topmostElementTypes) as JetElement?
         // parameters and supertype lists are not analyzable by themselves, but if we don't count them as topmost, we'll stop inside, say,
         // object expressions inside arguments of super constructors of classes (note that classes themselves are not topmost elements)