Support bounded mixins in the VM (fix issue 14453).

runtime/vm/object.h

 // 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 4563 matching lines @@
 
 // A MixinAppType represents a parsed mixin application clause, e.g.
 // "S<T> with M<U>, N<V>".
 // MixinAppType objects do not survive finalization, so they do not
 // need to be written to and read from snapshots.
 // The class finalizer creates synthesized classes S&M and S&M&N if they do not
 // yet exist in the library declaring the mixin application clause.
 class MixinAppType : public AbstractType {
  public:
   // A MixinAppType object is unfinalized by definition, since it is replaced at
-  // class finalization time with a finalized Type or BoundedType object.
+  // class finalization time with a finalized (and possibly malformed or
+  // malbounded) Type object.
   virtual bool IsFinalized() const { return false; }
-  // TODO(regis): Handle malformed and malbounded MixinAppType.
   virtual bool IsMalformed() const { return false; }
   virtual bool IsMalbounded() const { return false; }
   virtual bool IsMalformedOrMalbounded() const { return false; }
   virtual bool IsResolved() const { return false; }
   virtual bool HasResolvedTypeClass() const { return false; }
   virtual RawString* Name() const;
   virtual intptr_t token_pos() const;
 
   // Returns the mixin composition depth of this mixin application type.
   intptr_t Depth() const;
@@ skipping 2034 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_