1// -*- C++ -*-
2
3// Copyright (C) 2005-2015 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the terms
7// of the GNU General Public License as published by the Free Software
8// Foundation; either version 3, or (at your option) any later
9// version.
10
11// This library is distributed in the hope that it will be useful, but
12// WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14// General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23// <http://www.gnu.org/licenses/>.
24
25// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
26
27// Permission to use, copy, modify, sell, and distribute this software
28// is hereby granted without fee, provided that the above copyright
29// notice appears in all copies, and that both that copyright notice
30// and this permission notice appear in supporting documentation. None
31// of the above authors, nor IBM Haifa Research Laboratories, make any
32// representation about the suitability of this software for any
33// purpose. It is provided "as is" without express or implied
34// warranty.
35
36/**
37 * @file gp_hash_table_map_/insert_no_store_hash_fn_imps.hpp
38 * Contains implementations of gp_ht_map_'s insert related functions,
39 * when the hash value is not stored.
40 */
41
42PB_DS_CLASS_T_DEC
43inline typename PB_DS_CLASS_C_DEC::size_type
44PB_DS_CLASS_C_DEC::
45find_ins_pos(key_const_reference r_key, false_type)
46{
47  size_type hash = ranged_probe_fn_base::operator()(r_key);
48  size_type i;
49
50  /* The insertion position is initted to a non-legal value to indicate
51   *     that it has not been initted yet.
52   */
53  size_type ins_pos = m_num_e;
54  resize_base::notify_insert_search_start();
55  for (i = 0; i < m_num_e; ++i)
56    {
57      const size_type pos = ranged_probe_fn_base::operator()(r_key, hash, i);
58      _GLIBCXX_DEBUG_ASSERT(pos < m_num_e);
59      entry* const p_e = m_entries + pos;
60      switch(p_e->m_stat)
61        {
62        case empty_entry_status:
63	  {
64            resize_base::notify_insert_search_end();
65	    PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
66	    return (ins_pos == m_num_e) ? pos : ins_pos;
67	  }
68	  break;
69        case erased_entry_status:
70	  if (ins_pos == m_num_e)
71	    ins_pos = pos;
72	  break;
73        case valid_entry_status:
74	  if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
75            {
76	      resize_base::notify_insert_search_end();
77	      PB_DS_CHECK_KEY_EXISTS(r_key)
78                return pos;
79            }
80	  break;
81        default:
82	  _GLIBCXX_DEBUG_ASSERT(0);
83        };
84
85      resize_base::notify_insert_search_collision();
86    }
87  resize_base::notify_insert_search_end();
88  if (ins_pos == m_num_e)
89    __throw_insert_error();
90  return ins_pos;
91}
92
93PB_DS_CLASS_T_DEC
94inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool>
95PB_DS_CLASS_C_DEC::
96insert_imp(const_reference r_val, false_type)
97{
98  key_const_reference r_key = PB_DS_V2F(r_val);
99  const size_type pos = find_ins_pos(r_key,
100				     traits_base::m_store_extra_indicator);
101
102  if (m_entries[pos].m_stat == valid_entry_status)
103    {
104      PB_DS_CHECK_KEY_EXISTS(r_key)
105      return std::make_pair(&(m_entries + pos)->m_value, false);
106    }
107
108  PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
109  return std::make_pair(insert_new_imp(r_val, pos), true);
110}
111
112