|  | // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file | 
|  | // for details. All rights reserved. Use of this source code is governed by a | 
|  | // BSD-style license that can be found in the LICENSE file. | 
|  |  | 
|  | // These Dart classes correspond to the VM internal implementation classes. | 
|  |  | 
|  | // Equivalent of RawAbstractType. | 
|  | abstract class _AbstractType implements Type { | 
|  | String toString() native "AbstractType_toString"; | 
|  | } | 
|  |  | 
|  | // Equivalent of RawType. | 
|  | class _Type extends _AbstractType { | 
|  | } | 
|  |  | 
|  | // Equivalent of RawTypeRef. | 
|  | class _TypeRef extends _AbstractType { | 
|  | } | 
|  |  | 
|  | // Equivalent of RawTypeParameter. | 
|  | class _TypeParameter extends _AbstractType { | 
|  | } | 
|  |  | 
|  | // Equivalent of RawBoundedType. | 
|  | class _BoundedType extends _AbstractType { | 
|  | } | 
|  |  | 
|  | // Equivalent of RawMixinAppType. | 
|  | class _MixinAppType extends _AbstractType { | 
|  | } |