Fraction class prototype and test (not to be committed).

runtime/vm/ast.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_AST_H_
 #define VM_AST_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
@@ skipping 426 matching lines @@
       : AstNode(token_pos), literal_(literal) {
     ASSERT(literal_.IsNotTemporaryScopedHandle());
     ASSERT(literal_.IsSmi() || literal_.IsOld());
 #if defined(DEBUG)
     if (literal_.IsString()) {
       ASSERT(String::Cast(literal_).IsSymbol());
     }
 #endif  // defined(DEBUG)
     ASSERT(literal_.IsNull() ||
            Class::Handle(literal_.clazz()).is_finalized() ||
-           Class::Handle(literal_.clazz()).is_prefinalized());
+           Class::Handle(literal_.clazz()).is_prefinalized() ||
+           // TODO(regis): Remove next line once fixed.
+           Class::Handle(literal_.clazz()).is_refinalize_after_patch());
   }
 
   const Instance& literal() const { return literal_; }
 
   virtual bool IsPotentiallyConst() const;
   virtual const Instance* EvalConstExpr() const {
     return &literal();
   }
 
   virtual void VisitChildren(AstNodeVisitor* visitor) const { }
@@ skipping 1561 matching lines @@
   const intptr_t try_index_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(InlinedFinallyNode);
 };
 
 }  // namespace dart
 
 #undef DECLARE_COMMON_NODE_FUNCTIONS
 
 #endif  // VM_AST_H_