Evaluate expression in context of an object

runtime/vm/object.h

Index: runtime/vm/object.h
===================================================================
--- runtime/vm/object.h	(revision 26326)
+++ runtime/vm/object.h	(working copy)
@@ -3693,6 +3693,11 @@
   // function.
   bool IsCallable(Function* function, Context* context) const;
 
+  // Evaluate the given expression as if it appeared in an instance
+  // method of this instance and return the resulting value, or an
+  // error object if evaluating the expression fails.
+  RawObject* Evaluate(const String& expr) const;
+
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawInstance));
   }