tools.hxx

// tools.hxx: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 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_TOOLS_HXX
# define VCSN_ALGEBRA_IMPLEMENTATION_FREE_MONOID_TOOLS_HXX

# include <vaucanson/algebra/implementation/free_monoid/tools.hh>

namespace vcsn
{

  template<typename A>
  const std::list<typename A::letter_t>&
  identity_value(SELECTOR(algebra::FreeMonoidBase<A>),
                 SELECTOR(std::list<typename A::letter_t>))
  {
    static const std::list<typename A::letter_t> instance;
    return instance;
  }

  template<typename A>
  std::list<typename A::letter_t>
  op_convert(SELECTOR(algebra::FreeMonoidBase<A>),
             SELECTOR(std::list<typename A::letter_t>),
             const typename A::letter_t& c)
  {
    std::list<typename A::letter_t> l;
    l.push_back(c);
    return l;
  }

  template <typename A>
  void
  op_in_mul(const algebra::FreeMonoidBase<A>& s,
            std::list<typename A::letter_t>& dst,
            const std::list<typename A::letter_t>& src)
  {
    typedef typename std::list<typename A::letter_t>::const_iterator it_t;
    for (it_t i = src.begin();
         i != src.end();
         i++)
      dst.push_back(*i);
  }

  template <typename A>
  std::list<typename A::letter_t>
  op_mul(const algebra::FreeMonoidBase<A>& s,
         const std::list<typename A::letter_t>& a,
         const std::list<typename A::letter_t>& b)
  {
    typedef typename std::list<typename A::letter_t>::const_iterator it_t;
    std::list<typename A::letter_t> ret(a);
    op_in_mul(s, ret, b);
    return ret;
  }

} // vcsn

#endif // ! VCSN_ALGEBRA_IMPLEMENTATION_FREE_MONOID_TOOLS_HXX

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