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Meta.h

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/************************************************************** ggt-head beg
 *
 * GGT: Generic Graphics Toolkit
 *
 * Original Authors:
 *   Allen Bierbaum
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: Meta.h,v $
 * Date modified: $Date: 2002/07/11 21:17:37 $
 * Version:       $Revision: 1.1 $
 * -----------------------------------------------------------------
 *
 *********************************************************** ggt-head end */
/*************************************************************** ggt-cpr beg
*
* GGT: The Generic Graphics Toolkit
* Copyright (C) 2001,2002 Allen Bierbaum
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
 ************************************************************ ggt-cpr end */
#ifndef _GMTL_METAPROGRAMMING_H
#define _GMTL_METAPROGRAMMING_H


/*** STRINGIZE and JOIN macros */
/* Taken from boost (see boost.org) */

//
// Helper macro GMTL_STRINGIZE:
// Converts the parameter X to a string after macro replacement
// on X has been performed.
//
#define GMTL_STRINGIZE(X) GMTL_DO_STRINGIZE(X)
#define GMTL_DO_STRINGIZE(X) #X

//
// Helper macro GMTL_JOIN:
// The following piece of macro magic joins the two 
// arguments together, even when one of the arguments is
// itself a macro (see 16.3.1 in C++ standard).  The key
// is that macro expansion of macro arguments does not
// occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
//
#define GMTL_JOIN( X, Y ) GMTL_DO_JOIN( X, Y )
#define GMTL_DO_JOIN( X, Y ) GMTL_DO_JOIN2(X,Y)
#define GMTL_DO_JOIN2( X, Y ) X##Y


namespace gmtl
{  
   
   template <typename T>
   struct Type2Type
   {
      typedef T OriginalType;
   };
   

   template <class T> inline void ignore_unused_variable_warning(const T&) { }


} // end namespace
#endif

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