[KT-4124] Add diagnostic that reports of local classes. Remove test for diagnostic of nested types

js/js.frontend/src/org/jetbrains/kotlin/js/resolve/JsPlatformConfigurator.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.container.StorageComponentContainer
 import org.jetbrains.kotlin.container.useImpl
 import org.jetbrains.kotlin.container.useInstance
 import org.jetbrains.kotlin.js.resolve.diagnostics.JsCallChecker
+import org.jetbrains.kotlin.js.resolve.diagnostics.LocalClassChecker
 import org.jetbrains.kotlin.resolve.IdentifierChecker
 import org.jetbrains.kotlin.resolve.OverloadFilter
 import org.jetbrains.kotlin.resolve.PlatformConfigurator
@@ -28,7 +29,7 @@ import org.jetbrains.kotlin.types.DynamicTypesAllowed
 
 object JsPlatformConfigurator : PlatformConfigurator(
         DynamicTypesAllowed(),
-        additionalDeclarationCheckers = listOf(NativeInvokeChecker(), NativeGetterChecker(), NativeSetterChecker()),
+        additionalDeclarationCheckers = listOf(NativeInvokeChecker(), NativeGetterChecker(), NativeSetterChecker(), LocalClassChecker()),
         additionalCallCheckers = listOf(),
         additionalTypeCheckers = listOf(),
         additionalSymbolUsageValidators = listOf(),

js/js.frontend/src/org/jetbrains/kotlin/js/resolve/diagnostics/LocalClassChecker.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2010-2016 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.kotlin.js.resolve.diagnostics
+
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.diagnostics.DiagnosticSink
+import org.jetbrains.kotlin.diagnostics.rendering.renderKind
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.DeclarationChecker
+import org.jetbrains.kotlin.resolve.DescriptorUtils.*
+
+class LocalClassChecker : DeclarationChecker {
+    override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, diagnosticHolder: DiagnosticSink,
+                       bindingContext: BindingContext) {
+        if (descriptor !is ClassDescriptor || declaration !is KtNamedDeclaration) {
+            return;
+        }
+        if (isAnonymousObject(descriptor) || isObject(descriptor)) {
+            return
+        }
+
+        // hack to avoid to get diagnostics when compile kotlin builtins
+        val fqNameUnsafe = getFqName(descriptor)
+        if (fqNameUnsafe.asString().startsWith("kotlin.")) {
+            return
+        }
+
+        if (hasEnclosingFunction(descriptor)) {
+            diagnosticHolder.report(ErrorsJs.NON_TOPLEVEL_CLASS_DECLARATION.on(declaration, descriptor.renderKind()))
+        }
+    }
+
+    private fun hasEnclosingFunction(descriptor: DeclarationDescriptor?): Boolean {
+        var d = descriptor
+        while (d != null) {
+            if (d is FunctionDescriptor) {
+                return true
+            }
+            d = d.containingDeclaration
+        }
+        return false
+    }
+}