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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009, 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 gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp

 * Contains implementations of gp_ht_map_'s insert related functions,

 * when the hash value is not stored.

 */

PB_DS_CLASS_T_DEC

inline typename PB_DS_CLASS_C_DEC::size_type

PB_DS_CLASS_C_DEC::

find_ins_pos(key_const_reference r_key, false_type)

{

  size_type hash = ranged_probe_fn_base::operator()(r_key);

  size_type i;

  /* The insertion position is initted to a non-legal value to indicate

   *     that it has not been initted yet.

   */

  size_type ins_pos = m_num_e;

  resize_base::notify_insert_search_start();

  for (i = 0; i < m_num_e; ++i)

    {

      const size_type pos = ranged_probe_fn_base::operator()(r_key, hash, i);

      _GLIBCXX_DEBUG_ASSERT(pos < m_num_e);

      entry* const p_e = m_entries + pos;

      switch(p_e->m_stat)

        {

        case empty_entry_status:

          {

            resize_base::notify_insert_search_end();

            PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)

            return (ins_pos == m_num_e) ? pos : ins_pos;

          }

          break;

        case erased_entry_status:

          if (ins_pos == m_num_e)

            ins_pos = pos;

          break;

        case valid_entry_status:

          if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))

            {

              resize_base::notify_insert_search_end();

              PB_DS_CHECK_KEY_EXISTS(r_key)

                return pos;

            }

          break;

        default:

          _GLIBCXX_DEBUG_ASSERT(0);

        };

      resize_base::notify_insert_search_collision();

    }

  resize_base::notify_insert_search_end();

  if (ins_pos == m_num_e)

    __throw_insert_error();

  return ins_pos;

}

PB_DS_CLASS_T_DEC

inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool>

PB_DS_CLASS_C_DEC::

insert_imp(const_reference r_val, false_type)

{

  key_const_reference r_key = PB_DS_V2F(r_val);

  const size_type pos = find_ins_pos(r_key,

                                     traits_base::m_store_extra_indicator);

  if (m_entries[pos].m_stat == valid_entry_status)

    {

      PB_DS_CHECK_KEY_EXISTS(r_key)

      return std::make_pair(&(m_entries + pos)->m_value, false);

    }

  PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)

  return std::make_pair(insert_new_imp(r_val, pos), true);

}