libstdc++
gp_hash_table_map_/erase_no_store_hash_fn_imps.hpp
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1// -*- C++ -*-
2
3// Copyright (C) 2005-2021 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
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34// warranty.
35
36/**
37 * @file gp_hash_table_map_/erase_no_store_hash_fn_imps.hpp
38 * Contains implementations of gp_ht_map_'s erase 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 bool
46PB_DS_CLASS_C_DEC::
47erase_imp(key_const_reference r_key, false_type)
48{
49 PB_DS_ASSERT_VALID((*this))
50 size_type hash = ranged_probe_fn_base::operator()(r_key);
51 size_type i;
52 resize_base::notify_erase_search_start();
53
54 for (i = 0; i < m_num_e; ++i)
55 {
56 const size_type pos = ranged_probe_fn_base::operator()(r_key, hash, i);
57 entry* const p_e = m_entries + pos;
58 switch(p_e->m_stat)
59 {
60 case empty_entry_status:
61 {
62 resize_base::notify_erase_search_end();
63 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
64 return false;
65 }
66 break;
67 case valid_entry_status:
68 if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
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 resize_base::notify_erase_search_collision();
82 }
83 resize_base::notify_erase_search_end();
84 return false;
85}
86
87#endif