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// -*- C++ -*-
// Copyright (C) 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::comp_hash
PB_ASSOC_CLASS_C_DEC::
find_ins_pos(const_key_reference r_key, int_to_type<true>)
{
PB_ASSOC_DBG_ONLY(PB_ASSOC_CLASS_C_DEC::assert_valid();)
comp_hash pos_hash_pair = my_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;
my_resize_base::notify_insert_search_start();
for (i = 0; i < m_num_e; ++i)
{
const size_type pos =
my_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:
{
my_resize_base::notify_insert_search_end();
PB_ASSOC_DBG_ONLY(
my_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 (my_hash_eq_fn_base::operator()(
PB_ASSOC_V2F(p_e->m_value),
p_e->m_hash,
r_key,
pos_hash_pair.second))
{
my_resize_base::notify_insert_search_end();
PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key);)
return (std::make_pair(pos, pos_hash_pair.second));
}
break;
default:
PB_ASSOC_DBG_ASSERT(0);
};
my_resize_base::notify_insert_search_collision();
}
my_resize_base::notify_insert_search_end();
if (ins_pos == m_num_e)
throw cannot_insert();
return (std::make_pair(ins_pos, pos_hash_pair.second));
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::data_reference
PB_ASSOC_CLASS_C_DEC::
subscript_imp(const_key_reference r_key, int_to_type<true>)
{
PB_ASSOC_DBG_ONLY(assert_valid();)
comp_hash pos_hash_pair =
find_ins_pos(r_key, my_hash_traits_base::s_store_hash_indicator);
if (m_a_entries[pos_hash_pair.first].m_stat != VALID_ENTRY_STATUS)
return (insert_new_imp(
value_type(r_key, Data()), pos_hash_pair)->second);
PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key));
return ((m_a_entries + pos_hash_pair.first)->m_value.second);
}
PB_ASSOC_CLASS_T_DEC
inline std::pair<typename PB_ASSOC_CLASS_C_DEC::find_iterator, bool>
PB_ASSOC_CLASS_C_DEC::
insert_imp(const_reference r_val, int_to_type<true>)
{
const_key_reference r_key = PB_ASSOC_V2F(r_val);
comp_hash pos_hash_pair =
find_ins_pos(r_key, my_hash_traits_base::s_store_hash_indicator);
entry_pointer p_e =& m_a_entries[pos_hash_pair.first];
if (p_e->m_stat == VALID_ENTRY_STATUS)
{
PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key));
return (std::make_pair(&p_e->m_value, false));
}
PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_does_not_exist(r_key));
return (std::make_pair(
insert_new_imp(r_val, pos_hash_pair),
true));
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::pointer
PB_ASSOC_CLASS_C_DEC::
insert_new_imp(const_reference r_val, comp_hash& r_pos_hash_pair)
{
PB_ASSOC_DBG_ASSERT(m_a_entries[r_pos_hash_pair.first].m_stat !=
VALID_ENTRY_STATUS);
if (do_resize_if_needed())
r_pos_hash_pair = find_ins_pos(
PB_ASSOC_V2F(r_val),
my_hash_traits_base::s_store_hash_indicator);
PB_ASSOC_DBG_ASSERT(m_a_entries[r_pos_hash_pair.first].m_stat !=
VALID_ENTRY_STATUS);
entry* const p_e = m_a_entries + r_pos_hash_pair.first;
new (&p_e->m_value) value_type(r_val);
p_e->m_hash = r_pos_hash_pair.second;
p_e->m_stat = VALID_ENTRY_STATUS;
my_resize_base::notify_inserted(++m_num_used_e);
PB_ASSOC_DBG_ONLY(my_map_debug_base::insert_new(p_e->m_value.first);)
PB_ASSOC_DBG_ONLY(assert_valid();)
return (static_cast<pointer>(&p_e->m_value));
}
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