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// -*- 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 insert_store_hash_fn_imps.hpp
* Contains implementations of gp_ht_map_'s find related functions, when the hash
* value is stored.
*/
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::comp_hash
PB_DS_CLASS_C_DEC::
find_ins_pos(const_key_reference r_key, store_hash_true_type)
{
_GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
comp_hash pos_hash_pair = 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, pos_hash_pair.second, i);
entry* const p_e = m_a_entries + pos;
switch(p_e->m_stat)
{
case empty_entry_status:
{
resize_base::notify_insert_search_end();
_GLIBCXX_DEBUG_ONLY(
map_debug_base::check_key_does_not_exist(r_key);)
return ((ins_pos == m_num_e)?
std::make_pair(pos, pos_hash_pair.second) :
std::make_pair(ins_pos, pos_hash_pair.second));
}
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),
p_e->m_hash,
r_key,
pos_hash_pair.second))
{
resize_base::notify_insert_search_end();
_GLIBCXX_DEBUG_ONLY(map_debug_base::check_key_exists(r_key);)
return (std::make_pair(pos, pos_hash_pair.second));
}
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 (std::make_pair(ins_pos, pos_hash_pair.second));
}
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, store_hash_true_type)
{
const_key_reference r_key = PB_DS_V2F(r_val);
comp_hash pos_hash_pair =
find_ins_pos(r_key, traits_base::m_store_extra_indicator);
_GLIBCXX_DEBUG_ASSERT(pos_hash_pair.first < m_num_e);
entry_pointer p_e =& m_a_entries[pos_hash_pair.first];
if (p_e->m_stat == valid_entry_status)
{
_GLIBCXX_DEBUG_ONLY(map_debug_base::check_key_exists(r_key));
return (std::make_pair(&p_e->m_value, false));
}
_GLIBCXX_DEBUG_ONLY(map_debug_base::check_key_does_not_exist(r_key));
return (std::make_pair(
insert_new_imp(r_val, pos_hash_pair),
true));
}
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