Minor. Small refactoring of AllUnderImportsScope

compiler/frontend/src/org/jetbrains/kotlin/resolve/AllUnderImportsScope.kt

@@ -17,25 +17,22 @@
 package org.jetbrains.kotlin.resolve
 
 import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.incremental.components.LookupLocation
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.resolve.scopes.JetScope
-import org.jetbrains.kotlin.incremental.components.LookupLocation
 import org.jetbrains.kotlin.types.JetType
 import org.jetbrains.kotlin.utils.Printer
-import java.util.ArrayList
 
-class AllUnderImportsScope : JetScope {
-    private val scopes = ArrayList<JetScope>()
-
-    public fun addAllUnderImport(descriptor: DeclarationDescriptor) {
-        if (descriptor is PackageViewDescriptor) {
-            scopes.add(NoSubpackagesInPackageScope(descriptor))
-        }
-        else if (descriptor is ClassDescriptor) {
-            scopes.add(descriptor.getStaticScope())
-            scopes.add(descriptor.getUnsubstitutedInnerClassesScope())
+class AllUnderImportsScope(descriptor: DeclarationDescriptor) : JetScope {
+    private val scopes = if (descriptor is ClassDescriptor) {
+        listOf(descriptor.staticScope, descriptor.unsubstitutedInnerClassesScope)
+    }
+    else {
+        assert(descriptor is PackageViewDescriptor) {
+            "Must be class or package view descriptor: $descriptor"
         }
+        listOf(NoSubpackagesInPackageScope(descriptor as PackageViewDescriptor))
     }
 
     override fun getDescriptors(kindFilter: DescriptorKindFilter, nameFilter: (Name) -> Boolean): Collection<DeclarationDescriptor> {

compiler/frontend/src/org/jetbrains/kotlin/resolve/QualifiedExpressionResolver.kt

@@ -129,9 +129,7 @@ public class QualifiedExpressionResolver(val symbolUsageValidator: SymbolUsageVa
             if (packageOrClassDescriptor is ClassDescriptor && packageOrClassDescriptor.kind.isSingleton) {
                 trace.report(Errors.CANNOT_IMPORT_MEMBERS_FROM_SINGLETON.on(lastPart.expression, packageOrClassDescriptor)) // todo report on star
             }
-            val scope = AllUnderImportsScope()
-            scope.addAllUnderImport(packageOrClassDescriptor)
-            return scope
+            return AllUnderImportsScope(packageOrClassDescriptor)
         }
         else {
             val aliasName = JetPsiUtil.getAliasName(importDirective)