Add support of light classes for local class/object declarations

core/descriptors/src/org/jetbrains/jet/lang/resolve/descriptorUtils.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.lang.resolve
+
+import org.jetbrains.jet.lang.descriptors.ClassDescriptor
+import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor
+
+public fun ClassDescriptor.checkSuperTypeByFQName(qualifiedName: String, deep: Boolean): Boolean {
+    fun checkDescriptor(descriptor: DeclarationDescriptor): Boolean {
+        return qualifiedName == DescriptorUtils.getFQName(descriptor).asString()
+    }
+
+    if (deep && checkDescriptor(this)) return true
+
+    for (superType in getTypeConstructor().getSupertypes()) {
+        val superDescriptor = superType.getConstructor().getDeclarationDescriptor()
+        if (superDescriptor is ClassDescriptor) {
+            if (checkDescriptor(superDescriptor)) return true
+            if (deep && superDescriptor.checkSuperTypeByFQName(qualifiedName, deep)) return true
+        }
+    }
+
+    return false
+}