libstdc++: insert_no_store_hash_fn_imps.hpp Source File

libstdc++

cc_hash_table_map_/insert_no_store_hash_fn_imps.hpp
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1// -*- C++ -*-
2
3// Copyright (C) 2005-2026 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 cc_hash_table_map_/insert_no_store_hash_fn_imps.hpp
38 * Contains implementations of cc_ht_map_'s insert related functions,
39 * when the hash value is not stored.
40 */
41
42#ifdef PB_DS_CLASS_C_DEC
43
44PB_DS_CLASS_T_DEC
45inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool>
46PB_DS_CLASS_C_DEC::
47insert_imp(const_reference r_val, false_type)
48{
49 PB_DS_ASSERT_VALID((*this))
50 key_const_reference r_key = PB_DS_V2F(r_val);
51 const size_type pos = ranged_hash_fn_base::operator()(r_key);
52 entry_pointer p_e = m_entries[pos];
53 resize_base::notify_insert_search_start();
54
55 while (p_e != 0 && !hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value),
56 r_key))
57 {
58 resize_base::notify_insert_search_collision();
59 p_e = p_e->m_p_next;
60 }
61
62 resize_base::notify_insert_search_end();
63 if (p_e != 0)
64 {
65 PB_DS_CHECK_KEY_EXISTS(r_key)
66 return std::make_pair(&p_e->m_value, false);
67 }
68
69 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
70 return std::make_pair(insert_new_imp(r_val, pos), true);
71}
72
73#endif
std::make_pair
constexpr pair< typename __decay_and_strip< _T1 >::__type, typename __decay_and_strip< _T2 >::__type > make_pair(_T1 &&__x, _T2 &&__y)
A convenience wrapper for creating a pair from two objects.
Definition stl_pair.h:1169
std::pair
Struct holding two objects (or references) of arbitrary type.
Definition stl_pair.h:307