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diff --git a/src/intersim2/module.hpp b/src/intersim2/module.hpp
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+// $Id: module.hpp 5188 2012-08-30 00:31:31Z dub $
+
+/*
+ Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior University
+ 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 with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _MODULE_HPP_
+#define _MODULE_HPP_
+
+#include "booksim.hpp"
+
+#include <string>
+#include <vector>
+#include <iostream>
+
+class Module {
+private:
+  string _name;
+  string _fullname;
+
+  vector<Module *> _children;
+
+protected:
+  void _AddChild( Module *child );
+
+public:
+  Module( Module *parent, const string& name );
+  virtual ~Module( ) { }
+  
+  inline const string & Name() const { return _name; }
+  inline const string & FullName() const { return _fullname; }
+
+  void DisplayHierarchy( int level = 0, ostream & os = cout ) const;
+
+  void Error( const string& msg ) const;
+  void Debug( const string& msg ) const;
+
+  virtual void Display( ostream & os = cout ) const;
+};
+
+#endif