// -*- C++ -*-

// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option) any later
// version.

// This library 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 this library; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free
// software library 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.

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.

/**
 * @file string_trie_e_access_traits_imp.hpp
 * Contains a policy for extracting character positions from
 *    a string for a vector-based PATRICIA tree
 */

PB_DS_CLASS_T_DEC
detail::integral_constant<int, Reverse> PB_DS_CLASS_C_DEC::s_rev_ind;

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
e_pos(e_type e)
{
  return (static_cast<size_type>(e - min_e_val));
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
begin(const_key_reference r_key)
{
  return (begin_imp(r_key, s_rev_ind));
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
end(const_key_reference r_key)
{
  return (end_imp(r_key, s_rev_ind));
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
begin_imp(const_key_reference r_key, detail::false_type)
{
  return (r_key.begin());
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
begin_imp(const_key_reference r_key, detail::true_type)
{
  return (r_key.rbegin());
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
end_imp(const_key_reference r_key, detail::false_type)
{
  return (r_key.end());
}

PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::const_iterator
PB_DS_CLASS_C_DEC::
end_imp(const_key_reference r_key, detail::true_type)
{
  return (r_key.rend());
}