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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 cc_hash_table_map_/erase_store_hash_fn_imps.hpp

 * Contains implementations of cc_ht_map_'s erase related functions,

 * when the hash value is stored.

 */

PB_DS_CLASS_T_DEC

inline bool

PB_DS_CLASS_C_DEC::

erase_in_pos_imp(key_const_reference r_key, const comp_hash& r_pos_hash_pair)

{

  PB_DS_ASSERT_VALID((*this))

  entry_pointer p_e = m_entries[r_pos_hash_pair.first];

  resize_base::notify_erase_search_start();

  if (p_e == 0)

    {

      resize_base::notify_erase_search_end();

      PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)

      PB_DS_ASSERT_VALID((*this))

      return false;

    }

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

                                  r_key, r_pos_hash_pair.second))

    {

      resize_base::notify_erase_search_end();

      PB_DS_CHECK_KEY_EXISTS(r_key)

      erase_entry_pointer(m_entries[r_pos_hash_pair.first]);

      do_resize_if_needed_no_throw();

      PB_DS_ASSERT_VALID((*this))

      return true;

    }

  while (true)

    {

      entry_pointer p_next_e = p_e->m_p_next;

      if (p_next_e == 0)

        {

          resize_base::notify_erase_search_end();

          PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)

          PB_DS_ASSERT_VALID((*this))

          return false;

        }

      if (hash_eq_fn_base::operator()(PB_DS_V2F(p_next_e->m_value),

                                      p_next_e->m_hash, r_key,

                                      r_pos_hash_pair.second))

        {

          resize_base::notify_erase_search_end();

          PB_DS_CHECK_KEY_EXISTS(r_key)

          erase_entry_pointer(p_e->m_p_next);

          do_resize_if_needed_no_throw();

          PB_DS_ASSERT_VALID((*this))

          return true;

        }

      resize_base::notify_erase_search_collision();

      p_e = p_next_e;

    }

}