special_char_traits.hh

// special_char_traits.hh: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 2004, 2005, 2006 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_MISC_SPECIAL_CHAR_TRAITS_HH
# define VCSN_MISC_SPECIAL_CHAR_TRAITS_HH

# include <vaucanson/misc/char_traits.hh>

# define VCSN_USE_GENERIC_CHAR_TRAITS_FOR(Type)                         \
  template <>                                                           \
  struct char_traits<Type> : public ::vcsn::misc::char_traits<Type> { }

namespace std
{
  // Specialize char_traits for builtin types.
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (int);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (long int);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (unsigned int);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (unsigned long int);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (float);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (double);
  VCSN_USE_GENERIC_CHAR_TRAITS_FOR (long double);

  // Specialize char_traits for pointers.
  template <class T>
  struct char_traits<T*> : public ::vcsn::misc::char_traits<T*> { };

  // Specialize char_traits for pairs.
  template <class U, class V>
  struct char_traits< pair<U, V> > :
      public ::vcsn::misc::char_traits< pair<U, V> >
  {
  };
} // end of namespace std

#endif // ! VCSN_MISC_SPECIAL_CHAR_TRAITS_HH

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