words.hh

// words.hh: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 2001, 2002, 2003, 2004 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_ALGEBRA_IMPLEMENTATION_FREE_MONOID_WORDS_HH
# define VCSN_ALGEBRA_IMPLEMENTATION_FREE_MONOID_WORDS_HH

# include <string>
# include <vaucanson/algebra/concept/freemonoid_base.hh>
# include <vaucanson/misc/unique.hh>

namespace vcsn {

  namespace algebra {
  
    /*--------------.
    | FreeMonoid<A> |
    `--------------*/
    template<typename A>
    struct FreeMonoid
      : FreeMonoidBase<FreeMonoid<A> >
    {
      typedef A alphabets_elt_t;

      FreeMonoid(const A& a);

      FreeMonoid(const FreeMonoid& w);

      A&        alphabet();

      const A&  alphabet() const;

    protected:
      A alph_;
    };

    template<typename A>
    bool operator==(const FreeMonoid<A>& a,
                    const FreeMonoid<A>& b);


  };
  
  /*-------------------------------.
  | dynamic_traits<FreeMonoid<A> > |
  `-------------------------------*/
  template<typename A>
  struct dynamic_traits<algebra::FreeMonoid<A> >
    : dynamic_traits<algebra::FreeMonoidBase<algebra::FreeMonoid<A> > >
  {
    static const bool           ret = A::dynamic;
  };

  /*------------------------------.
  | MetaElement<FreeMonoid<A>, T> |
  `------------------------------*/
  template<typename A, typename T>
  struct MetaElement<algebra::FreeMonoid<A>, T>
    : MetaElement<algebra::FreeMonoidBase<algebra::FreeMonoid<A> >, T>
  {};

  template <class A>
  struct virtual_types<algebra::FreeMonoid<A> >
    : virtual_types<algebra::FreeMonoidBase<algebra::FreeMonoid<A> > >
  {
    typedef algebra::mul_kind semigroup_kind;

    typedef A           alphabet_t;
  };

  enum op_choose_max_word_length_t { op_choose_max_word_length = 32 };

} // vcsn

# ifndef VCSN_USE_INTERFACE_ONLY
#  include <vaucanson/algebra/implementation/free_monoid/words.hxx>
# endif // VCSN_USE_INTERFACE_ONLY

#endif // ! VCSN_ALGEBRA_IMPLEMENTATION_FREE_MONOID_WORDS_HH

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