libstdc++: erase_store_hash_fn_imps.hpp Source File

libstdc++

gp_hash_table_map_/erase_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 gp_hash_table_map_/erase_store_hash_fn_imps.hpp
38 * Contains implementations of gp_ht_map_'s erase related functions,
39 * when the hash value is stored.
40 */
41
42#ifdef PB_DS_CLASS_C_DEC
43
44PB_DS_CLASS_T_DEC
45inline bool
46PB_DS_CLASS_C_DEC::
47erase_imp(key_const_reference r_key, true_type)
48{
49 const comp_hash pos_hash_pair = ranged_probe_fn_base::operator()(r_key);
50 size_type i;
51 resize_base::notify_erase_search_start();
52 for (i = 0; i < m_num_e; ++i)
53 {
54 const size_type pos = ranged_probe_fn_base::operator()(r_key, pos_hash_pair.second, i);
55
56 entry* const p_e = m_entries + pos;
57 switch(p_e->m_stat)
58 {
59 case empty_entry_status:
60 {
61 resize_base::notify_erase_search_end();
62 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
63 return false;
64 }
65 break;
66 case valid_entry_status:
67 if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), p_e->m_hash,
68 r_key, pos_hash_pair.second))
69 {
70 resize_base::notify_erase_search_end();
71 erase_entry(p_e);
72 do_resize_if_needed_no_throw();
73 return true;
74 }
75 break;
76 case erased_entry_status:
77 break;
78 default:
79 _GLIBCXX_DEBUG_ASSERT(0);
80 };
81
82 resize_base::notify_erase_search_collision();
83 }
84 resize_base::notify_erase_search_end();
85 return false;
86}
87
88#endif