generator-combinations.hpp

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/*
  GENERATOR-COMBINATIONS.hpp  -  generate combinations and variations

   Copyright (C)
     2011,            Hermann Vosseler <Ichthyostega@web.de>

  **Lumiera** is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version. See the file COPYING for further details.

*/


#ifndef LIB_META_GENERATOR_COMBINATIONS_H
#define LIB_META_GENERATOR_COMBINATIONS_H

#include "lib/meta/typelist.hpp"
#include "lib/meta/typelist-manip.hpp"
#include "lib/meta/generator.hpp"



namespace lib {
namespace meta{
  
  
  template<class TYPES_1, class TYPES_2>
  struct CartesianProduct
    : Distribute< typename TYPES_1::List
                , typename TYPES_2::List
                >
    { };
  
  
  
  template< template<class,class,class> class _X_>
  struct PickParametersFromSublist
    {
      template<class SUBLIST, class BASE>
      struct SingleCaseInstantiation
        : _X_< typename Pick<SUBLIST,0>::Type
             , typename Pick<SUBLIST,1>::Type
             , BASE
             >
        { };
    };
  
  
  template
    < class TYPES_1, class TYPES_2           
    , template<class,class,class> class _X_  
    , class BASE = NullType
    >
  struct InstantiateChainedCombinations
    : InstantiateChained< typename CartesianProduct<TYPES_1,TYPES_2>::List
                        , PickParametersFromSublist<_X_>::template SingleCaseInstantiation
                        , BASE
                        >
    { };
  
  
  
}} // namespace lib::meta
#endif