aut_to_exp.hh

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// aut_to_exp.hh: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2008 The Vaucanson Group.
//
// This program 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.
//
// The complete GNU General Public Licence Notice can be found as the
// `COPYING' file in the root directory.
//
// The Vaucanson Group consists of people listed in the `AUTHORS' file.
//
#ifndef VCSN_ALGORITHMS_AUT_TO_EXP_HH
# define VCSN_ALGORITHMS_AUT_TO_EXP_HH

// INTERFACE: Exp aut_to_exp(const GenAutomaton& a) { return vcsn::aut_to_exp(*a); }

# include <vaucanson/design_pattern/design_pattern.hh>
# include <vaucanson/automata/concept/automata_base.hh>

namespace vcsn {

  template<typename A, typename T>
  typename Element<A, T>::series_set_elt_t
  aut_to_exp(const Element<A, T>& a);

  template<typename A, typename T, typename Chooser_>
  typename Element<A, T>::series_set_elt_t
  aut_to_exp(const Element<A, T>& a, const Chooser_& c);

  struct DefaultChooser
  {
      template <class Auto_>
      typename Auto_::hstate_t
      operator()(const Auto_& a) const;
  };

  struct RandomChooser
  {
      template <class Auto_>
      typename Auto_::hstate_t
      operator()(const Auto_& a) const;
  };


  struct HChooser
  {
      template <class Auto_>
      typename Auto_::hstate_t
      operator()(const Auto_& a) const;
  };

  struct DMChooser
  {
      template <class Auto_>
      typename Auto_::hstate_t
      operator()(const Auto_& a) const;
  };

  class ListChooser
  {
    typedef std::list<unsigned int> list_t;
  public :
    ListChooser(const list_t& l);

    template <class Auto_>
    typename Auto_::hstate_t operator() (const Auto_& a);

  private :
    list_t list_;
    list_t::const_iterator pos_;
  };

} // vcsn

# if !defined VCSN_USE_INTERFACE_ONLY && !defined VCSN_USE_LIB
#  include <vaucanson/algorithms/aut_to_exp.hxx>
# endif // VCSN_USE_INTERFACE_ONLY

#endif // ! VCSN_ALGORITHMS_AUT_TO_EXP_HH

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