Add and use JetClassOrObject#isTopLevel()

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetClass.java

@@ -210,4 +210,9 @@ public class JetClass extends JetTypeParameterListOwnerStub<PsiJetClassStub> imp
     public ItemPresentation getPresentation() {
         return ItemPresentationProviders.getItemPresentation(this);
     }
+
+    @Override
+    public boolean isTopLevel() {
+        return getContainingFile() == getParent();
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetClassOrObject.java

@@ -49,4 +49,6 @@ public interface JetClassOrObject extends PsiNameIdentifierOwner, JetDeclaration
 
     @Nullable
     JetClassBody getBody();
+
+    boolean isTopLevel();
 }

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetObjectDeclaration.java

@@ -53,6 +53,7 @@ public class JetObjectDeclaration extends JetNamedDeclarationStub<PsiJetObjectSt
         return nameAsDeclaration == null ? null : nameAsDeclaration.getName();
     }
 
+    @Override
     public boolean isTopLevel() {
         PsiJetObjectStub stub = getStub();
         if (stub != null) {

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClassForExplicitDeclaration.java

@@ -397,7 +397,6 @@ public class KotlinLightClassForExplicitDeclaration extends KotlinWrappingLightC
 
     @NotNull
     private String[] computeModifiers() {
-        boolean nestedClass = classOrObject.getParent() != classOrObject.getContainingFile();
         Collection<String> psiModifiers = Sets.newHashSet();
 
         // PUBLIC, PROTECTED, PRIVATE, ABSTRACT, FINAL
@@ -417,7 +416,7 @@ public class KotlinLightClassForExplicitDeclaration extends KotlinWrappingLightC
         if (classOrObject.hasModifier(PRIVATE_KEYWORD)) {
             // Top-level private class has PUBLIC visibility in Java
             // Nested private class has PRIVATE visibility
-            psiModifiers.add(nestedClass ? PsiModifier.PRIVATE : PsiModifier.PUBLIC);
+            psiModifiers.add(classOrObject.isTopLevel() ? PsiModifier.PUBLIC : PsiModifier.PRIVATE);
         }
 
         if (!psiModifiers.contains(PsiModifier.PRIVATE) && !psiModifiers.contains(PsiModifier.PROTECTED)) {
@@ -433,7 +432,7 @@ public class KotlinLightClassForExplicitDeclaration extends KotlinWrappingLightC
             psiModifiers.add(PsiModifier.FINAL);
         }
 
-        if (nestedClass && !classOrObject.hasModifier(INNER_KEYWORD)) {
+        if (!classOrObject.isTopLevel() && !classOrObject.hasModifier(INNER_KEYWORD)) {
             psiModifiers.add(PsiModifier.STATIC);
         }
 

idea/src/org/jetbrains/jet/plugin/util/JetPsiHeuristicsUtil.java

@@ -41,7 +41,7 @@ public class JetPsiHeuristicsUtil {
             // It is a Kotlin class already, we need to properly check visibility?
             JetClassOrObject classOrObject = lightClass.getOrigin();
 
-            if (isTopLevelDeclaration(classOrObject) && classOrObject.hasModifier(JetTokens.PRIVATE_KEYWORD)) {
+            if (classOrObject.isTopLevel() && classOrObject.hasModifier(JetTokens.PRIVATE_KEYWORD)) {
                 // The class is declared private in the targetPackage
                 // It is visible in this package and all of its subpackages
                 JetFile targetFile = classOrObject.getContainingJetFile();
@@ -53,8 +53,4 @@ public class JetPsiHeuristicsUtil {
         }
         return member.hasModifierProperty(PsiModifier.PUBLIC) || member.hasModifierProperty(PsiModifier.PROTECTED);
     }
-
-    public static boolean isTopLevelDeclaration(@NotNull JetClassOrObject classOrObject) {
-        return classOrObject.getContainingFile() == classOrObject.getParent();
-    }
 }