Added mutation of locals to debugger

src/frames.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 358 matching lines @@
  public:
   virtual Type type() const { return JAVA_SCRIPT; }
 
   // Accessors.
   inline Object* function() const;
   inline Object* receiver() const;
   inline void set_receiver(Object* value);
 
   // Access the parameters.
   Object* GetParameter(int index) const;
+  void SetParameter(int index, Object* value);
   int ComputeParametersCount() const;
 
   // Temporary way of getting access to the number of parameters
   // passed on the stack by the caller. Once argument adaptor frames
   // has been introduced on ARM, this number will always match the
   // computed parameters count.
   int GetProvidedParametersCount() const;
 
   // Check if this frame is a constructor frame invoked through 'new'.
   bool IsConstructor() const;
@@ skipping 18 matching lines @@
     ASSERT(frame->is_java_script());
     return static_cast<JavaScriptFrame*>(frame);
   }
 
  protected:
   explicit JavaScriptFrame(StackFrameIterator* iterator)
       : StandardFrame(iterator), disable_heap_access_(false) { }
 
   virtual Address GetCallerStackPointer() const;
 
+  // Returns the address of the n'th parameter stack element.
+  inline Address GetParameterAddress(int n) const;
+
   // When this mode is enabled it is not allowed to access heap objects.
   // This is a special mode used when gathering stack samples in profiler.
   // A shortcoming is that caller's SP value will be calculated incorrectly
   // (see GetCallerStackPointer implementation), but it is not used for stack
   // sampling.
   void DisableHeapAccess() { disable_heap_access_ = true; }
 
  private:
   bool disable_heap_access_;
   inline Object* function_slot_object() const;
@@ skipping 251 matching lines @@
   JavaScriptFrame* FindJavaScriptFrame(int n);
 
  private:
   StackFrameIterator iterator_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_