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jlechner |
// -*- C++ -*-
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// Copyright (C) 2005 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice and
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// this permission notice appear in supporting documentation. None of
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// the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied warranty.
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/**
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* @file insert_no_store_hash_fn_imps.hpp
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* Contains implementations of gp_ht_map_'s insert related functions, when the hash
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* value is not stored.
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*/
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PB_ASSOC_CLASS_T_DEC
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inline typename PB_ASSOC_CLASS_C_DEC::size_type
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PB_ASSOC_CLASS_C_DEC::
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find_ins_pos(const_key_reference r_key, int_to_type<false>)
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{
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size_type hash = my_ranged_probe_fn_base::operator()(r_key);
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size_type i;
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/* The insertion position is initted to a non-legal value to indicate
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* that it has not been initted yet.
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*/
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size_type ins_pos = m_num_e;
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my_resize_base::notify_insert_search_start();
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for (i = 0; i < m_num_e; ++i)
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{
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const size_type pos =
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my_ranged_probe_fn_base::operator()(r_key, hash, i);
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entry* const p_e = m_a_entries + pos;
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switch(p_e->m_stat)
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{
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case EMPTY_ENTRY_STATUS:
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{
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my_resize_base::notify_insert_search_end();
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PB_ASSOC_DBG_ONLY(
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my_map_debug_base::check_key_does_not_exist(r_key);)
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return ((ins_pos == m_num_e)? pos : ins_pos);
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}
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break;
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case ERASED_ENTRY_STATUS:
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if (ins_pos == m_num_e)
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ins_pos = pos;
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break;
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case VALID_ENTRY_STATUS:
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if (my_hash_eq_fn_base::operator()(
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PB_ASSOC_V2F(p_e->m_value), r_key))
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{
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my_resize_base::notify_insert_search_end();
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PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key);)
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return (pos);
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}
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break;
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default:
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PB_ASSOC_DBG_ASSERT(0);
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};
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my_resize_base::notify_insert_search_collision();
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}
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my_resize_base::notify_insert_search_end();
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if (ins_pos == m_num_e)
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throw cannot_insert();
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return (ins_pos);
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}
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PB_ASSOC_CLASS_T_DEC
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inline typename PB_ASSOC_CLASS_C_DEC::data_reference
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PB_ASSOC_CLASS_C_DEC::
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subscript_imp(const_key_reference r_key, int_to_type<false>)
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{
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PB_ASSOC_DBG_ONLY(assert_valid();)
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const size_type pos =
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find_ins_pos(r_key, my_hash_traits_base::s_store_hash_indicator);
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entry_pointer p_e =& m_a_entries[pos];
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if (p_e->m_stat != VALID_ENTRY_STATUS)
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return (insert_new_imp(
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value_type(r_key, Data()), pos)->second);
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PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key);)
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return (p_e->m_value.second);
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}
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PB_ASSOC_CLASS_T_DEC
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inline std::pair<typename PB_ASSOC_CLASS_C_DEC::find_iterator, bool>
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PB_ASSOC_CLASS_C_DEC::
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insert_imp(const_reference r_val, int_to_type<false>)
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{
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const_key_reference r_key = PB_ASSOC_V2F(r_val);
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const size_type pos =
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find_ins_pos(r_key, my_hash_traits_base::s_store_hash_indicator);
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if (m_a_entries[pos].m_stat == VALID_ENTRY_STATUS)
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{
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PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_exists(r_key);)
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return (std::make_pair(&m_a_entries[pos].m_value, false));
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}
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PB_ASSOC_DBG_ONLY(my_map_debug_base::check_key_does_not_exist(r_key));
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return (std::make_pair(
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insert_new_imp(r_val, pos),
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true));
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}
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PB_ASSOC_CLASS_T_DEC
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inline typename PB_ASSOC_CLASS_C_DEC::pointer
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PB_ASSOC_CLASS_C_DEC::
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insert_new_imp(const_reference r_val, size_type pos)
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{
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PB_ASSOC_DBG_ASSERT(m_a_entries[pos].m_stat != VALID_ENTRY_STATUS);
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if (do_resize_if_needed())
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pos = find_ins_pos(PB_ASSOC_V2F(r_val),
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my_hash_traits_base::s_store_hash_indicator);
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PB_ASSOC_DBG_ASSERT(m_a_entries[pos].m_stat != VALID_ENTRY_STATUS);
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entry* const p_e = m_a_entries + pos;
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new (&p_e->m_value) value_type(r_val);
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p_e->m_stat = VALID_ENTRY_STATUS;
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my_resize_base::notify_inserted(++m_num_used_e);
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PB_ASSOC_DBG_ONLY(my_map_debug_base::
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insert_new(p_e->m_value.first);)
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PB_ASSOC_DBG_ONLY(assert_valid();)
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return (static_cast<pointer>(&p_e->m_value));
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}
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