gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2021 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.
*/
#ifdef PB_DS_CLASS_C_DEC
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);
}
#endif
std::false_type
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
Definition: type_traits:86
std::pair
Struct holding two objects of arbitrary type.
Definition: stl_pair.h:213