Report error on non-top-level type aliases (unsupported in 1.1).

Get rid of nested type aliases in project.

compiler/testData/diagnostics/tests/Underscore.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -DEPRECATION
+// !DIAGNOSTICS: -DEPRECATION -TOPLEVEL_TYPEALIASES_ONLY
 
 <!UNDERSCORE_IS_RESERVED!>import kotlin.Deprecated as ___<!>
 

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromSuperClasses.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 // !CHECK_TYPE
 open class Outer<X, Y> {
     inner class Inner<Z>

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromSuperClassesLocal.kt

@@ -1,5 +1,5 @@
 // !CHECK_TYPE
-// !DIAGNOSTICS: -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER
+// !DIAGNOSTICS: -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER -TOPLEVEL_TYPEALIASES_ONLY
 
 class A<R1, R2, R3, R4>
 

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromSuperClassesLocalInsideInner.kt

@@ -1,5 +1,5 @@
 // !CHECK_TYPE
-// !DIAGNOSTICS: -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER
+// !DIAGNOSTICS: -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER -TOPLEVEL_TYPEALIASES_ONLY
 
 class A<R1, R2, R3, R4, R5, R6>
 

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromSuperClassesTransitive.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 // !CHECK_TYPE
 open class Outer<X, Y> {
     inner class Inner<Z>

compiler/testData/diagnostics/tests/redeclarations/TypeAliasCtorVsFun.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 class C(val x: Int)
 
 <!CONFLICTING_OVERLOADS!>typealias CC = C<!>

compiler/testData/diagnostics/tests/redeclarations/TypeAliasVsClass.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 // FILE: file1.kt
 class <!PACKAGE_OR_CLASSIFIER_REDECLARATION!>SomeClass<!>
 

compiler/testData/diagnostics/tests/redeclarations/TypeAliasVsProperty.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 // FILE: file1.kt
 typealias <!REDECLARATION!>Test<!> = String
 

compiler/testData/diagnostics/tests/typealias/aliasesOnly.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 typealias S = String
 
 class C {

compiler/testData/diagnostics/tests/typealias/capturingTypeParametersFromOuterClass.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 class Outer<TO> {
     typealias LTO = List<TO>

compiler/testData/diagnostics/tests/typealias/exposedExpandedType.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 typealias L<T> = List<T>
 
 class Outer {

compiler/testData/diagnostics/tests/typealias/import.kt

@@ -1,3 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 // FILE: file1.kt
 package package1
 

compiler/testData/diagnostics/tests/typealias/inheritedNestedTypeAlias.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 interface ICell<T> {
     val x: T
 }

compiler/testData/diagnostics/tests/typealias/inhreritedTypeAliasQualifiedByDerivedClass.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 open class Base {
     typealias Nested = String

compiler/testData/diagnostics/tests/typealias/innerTypeAliasAsType.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class Outer<T> {
     class Nested
     class GenericNested<TT>

compiler/testData/diagnostics/tests/typealias/innerTypeAliasAsType2.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class C<T> {
     inner class D
 

compiler/testData/diagnostics/tests/typealias/innerTypeAliasConstructor.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class Pair<X, Y>(val x: X, val y: Y)
 
 class C<T> {

compiler/testData/diagnostics/tests/typealias/kt14518.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class OuterClass<T1> {
     class NestedClass<T2>
     typealias NestedType<T> = NestedClass<T>

compiler/testData/diagnostics/tests/typealias/kt14641.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class A {
     public inner class B { }
     public typealias BAlias = B

compiler/testData/diagnostics/tests/typealias/localTypeAlias.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 fun <T> emptyList(): List<T> = null!!
 

compiler/testData/diagnostics/tests/typealias/localTypeAliasConstructor.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 class Cell<TC>(val x: TC)
 

compiler/testData/diagnostics/tests/typealias/localTypeAliasModifiers.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 fun outer() {
     <!WRONG_MODIFIER_TARGET!>companion<!> typealias TestLocal = Any
 }

compiler/testData/diagnostics/tests/typealias/localTypeAliasRecursive.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 fun outer() {
     typealias Test1 = <!RECURSIVE_TYPEALIAS_EXPANSION!>Test1<!>
     typealias Test2 = <!RECURSIVE_TYPEALIAS_EXPANSION!>List<Test2><!>

compiler/testData/diagnostics/tests/typealias/nested.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 class Pair<T1, T2>(val x1: T1, val x2: T2)
 

compiler/testData/diagnostics/tests/typealias/nestedCapturingTypeParameters.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class Pair<T1, T2>(val x1: T1, val x2: T2)
 
 class C<T> {

compiler/testData/diagnostics/tests/typealias/nestedSubstituted.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
 
 class Pair<T1, T2>(val x1: T1, val x2: T2)
 

compiler/testData/diagnostics/tests/typealias/topLevelTypeAliasesOnly.kt

@@ -0,0 +1,19 @@
+typealias TopLevel = Any
+
+interface A {
+    <!TOPLEVEL_TYPEALIASES_ONLY!>typealias Nested = Any<!>
+}
+
+class C {
+    <!TOPLEVEL_TYPEALIASES_ONLY!>typealias Nested = Any<!>
+    class D {
+        <!TOPLEVEL_TYPEALIASES_ONLY!>typealias Nested = Any<!>
+        fun foo() {
+            <!TOPLEVEL_TYPEALIASES_ONLY!>typealias LocalInMember = Any<!>
+        }
+    }
+}
+
+fun foo() {
+    <!TOPLEVEL_TYPEALIASES_ONLY!>typealias Local = Any<!>
+}

compiler/testData/diagnostics/tests/typealias/topLevelTypeAliasesOnly.txt

@@ -0,0 +1,28 @@
+package
+
+public fun foo(): kotlin.Unit
+
+public interface A {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public typealias Nested = kotlin.Any
+}
+
+public final class C {
+    public constructor C()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final class D {
+        public constructor D()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public final fun foo(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+        public typealias Nested = kotlin.Any
+    }
+    public typealias Nested = kotlin.Any
+}
+public typealias TopLevel = kotlin.Any

compiler/testData/diagnostics/tests/typealias/typeAliasAsBareType.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 typealias L<T> = List<T>
 typealias NL<T> = List<T>?
 typealias LStar<<!UNUSED_TYPEALIAS_PARAMETER!>T<!>> = List<*>

compiler/testData/diagnostics/tests/typealias/typeAliasAsQualifier.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 class C {
     typealias Self = C
     class Nested {

compiler/testData/diagnostics/tests/typealias/typeAliasAsSuperQualifier.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 open class Base {
     open fun foo() {}
 }

compiler/testData/diagnostics/tests/typealias/typeAliasConstructorWrongClass.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 abstract class AbstractClass
 typealias Test1 = AbstractClass
 val test1 = <!CREATING_AN_INSTANCE_OF_ABSTRACT_CLASS!>Test1()<!>

compiler/testData/diagnostics/tests/typealias/typeAliasShouldExpandToClass.kt

@@ -1,3 +1,5 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER -TOPLEVEL_TYPEALIASES_ONLY
+
 typealias ToTypeParam1<T> = <!TYPEALIAS_SHOULD_EXPAND_TO_CLASS!>T<!>
 typealias ToTypeParam2<T> = <!TYPEALIAS_SHOULD_EXPAND_TO_CLASS!>ToTypeParam1<T><!>
 typealias ToTypeParam3<T1, <!UNUSED_TYPEALIAS_PARAMETER!>T2<!>> = <!TYPEALIAS_SHOULD_EXPAND_TO_CLASS!>ToTypeParam2<T1><!>