Implement const expressions for local variables

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 2702 matching lines @@
  public:
   intptr_t num_variables() const { return raw_ptr()->num_variables_; }
 
   intptr_t TokenIndexAt(intptr_t scope_index) const;
   void SetTokenIndexAt(intptr_t scope_index, intptr_t token_pos) const;
 
   RawString* NameAt(intptr_t scope_index) const;
   void SetNameAt(intptr_t scope_index, const String& name) const;
 
   bool IsFinalAt(intptr_t scope_index) const;
-  void SetIsFinalAt(intptr_t scope_index, bool is_const) const;
+  void SetIsFinalAt(intptr_t scope_index, bool is_final) const;
+
+  bool IsConstAt(intptr_t scope_index) const;
+  void SetIsConstAt(intptr_t scope_index, bool is_const) const;
 
   RawAbstractType* TypeAt(intptr_t scope_index) const;
   void SetTypeAt(intptr_t scope_index, const AbstractType& type) const;
 
+  RawInstance* ConstValueAt(intptr_t scope_index) const;
+  void SetConstValueAt(intptr_t scope_index, const Instance& value) const;
+
   intptr_t ContextIndexAt(intptr_t scope_index) const;
   void SetContextIndexAt(intptr_t scope_index, intptr_t context_index) const;
 
   intptr_t ContextLevelAt(intptr_t scope_index) const;
   void SetContextLevelAt(intptr_t scope_index, intptr_t context_level) const;
 
   static const intptr_t kBytesPerElement =
       sizeof(RawContextScope::VariableDesc);
   static const intptr_t kMaxElements = kSmiMax / kBytesPerElement;
 
@@ skipping 3123 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_