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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009, 2010, 2011 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 3, 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.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

// 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 bin_search_tree_/find_fn_imps.hpp

 * Contains an implementation class for bin_search_tree_.

 */

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_const_iterator

PB_DS_CLASS_C_DEC::

lower_bound(key_const_reference r_key) const

{

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))

      p_nd = p_nd->m_p_right;

    else

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

  return iterator(p_pot);

}

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_iterator

PB_DS_CLASS_C_DEC::

lower_bound(key_const_reference r_key)

{

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))

      p_nd = p_nd->m_p_right;

    else

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

  return iterator(p_pot);

}

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_const_iterator

PB_DS_CLASS_C_DEC::

upper_bound(key_const_reference r_key) const

{

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

    else

      p_nd = p_nd->m_p_right;

  return const_iterator(p_pot);

}

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_iterator

PB_DS_CLASS_C_DEC::

upper_bound(key_const_reference r_key)

{

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

    else

      p_nd = p_nd->m_p_right;

  return point_iterator(p_pot);

}

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_iterator

PB_DS_CLASS_C_DEC::

find(key_const_reference r_key)

{

  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

    else

      p_nd = p_nd->m_p_right;

  node_pointer ret = p_pot;

  if (p_pot != m_p_head)

    {

      const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));

      if (__cmp)

        ret = m_p_head;

    }

  return point_iterator(ret);

}

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::point_const_iterator

PB_DS_CLASS_C_DEC::

find(key_const_reference r_key) const

{

  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))

  node_pointer p_pot = m_p_head;

  node_pointer p_nd = m_p_head->m_p_parent;

  while (p_nd != 0)

    if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))

      {

        p_pot = p_nd;

        p_nd = p_nd->m_p_left;

      }

    else

      p_nd = p_nd->m_p_right;

  node_pointer ret = p_pot;

  if (p_pot != m_p_head)

    {

      const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));

      if (__cmp)

        ret = m_p_head;

    }

  return point_const_iterator(ret);

}