print.hh

// Copyright (C) 2008, 2009 EPITA Research and Development Laboratory (LRDE)
//
// This file is part of Olena.
//
// Olena 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, version 2 of the License.
//
// Olena 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef MLN_TRAIT_WINDOW_PRINT_HH
# define MLN_TRAIT_WINDOW_PRINT_HH

# include <iostream>

# include <mln/trait/windows.hh>
# include <mln/metal/is_a.hh>
# include <mln/metal/bexpr.hh>



namespace mln
{

  // Forward declaration.
  template <typename E> struct Window;
  template <typename E> struct Weighted_Window;
  template <typename E> struct Neighborhood;


  namespace trait
  {

    namespace window
    {

      template <typename T>
      void print(std::ostream& ostr = std::cout);

      template <typename T>
      void print(const Neighborhood<T>& nbh, std::ostream& ostr = std::cout);

      template <typename T>
      void print(const Window<T>& win, std::ostream& ostr = std::cout);

      template <typename T>
      void print(const Weighted_Window<T>& w_win, std::ostream& ostr = std::cout);


# ifndef MLN_INCLUDE_ONLY

      template <typename T>
      inline
      void print(std::ostream& ostr)
      {
        metal::or_< mlc_is_a(T, Neighborhood),
                    metal::or_< mlc_is_a(T, Window),
                                mlc_is_a(T, Weighted_Window) > 
          >::check();
        typedef mln::trait::window_<T> the;
        ostr << "{ "
             << typename the::size()       .name() << ", "
             << typename the::support()    .name() << ", "
             << typename the::definition() .name() << " }" << std::endl;
      }

      template <typename T>
      inline
      void print(const Neighborhood<T>&, std::ostream& ostr)
      {
        print<T>(ostr);
      }

      template <typename T>
      inline
      void print(const Window<T>&, std::ostream& ostr)
      {
        print<T>(ostr);
      }

      template <typename T>
      inline
      void print(const Weighted_Window<T>&, std::ostream& ostr)
      {
        print<T>(ostr);
      }

# endif // ! MLN_INCLUDE_ONLY

    } // end of namespace mln::trait::window

  } // end of namespace mln::trait

} // end of namespace mln


#endif // ! MLN_TRAIT_WINDOW_PRINT_HH