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4569a895 AT |
1 | // -*- C++ -*- |
2 | ||
a945c346 | 3 | // Copyright (C) 2005-2024 Free Software Foundation, Inc. |
4569a895 AT |
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 | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
4569a895 AT |
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 | ||
748086b7 JJ |
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. | |
4569a895 | 19 | |
748086b7 JJ |
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/>. | |
4569a895 AT |
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 | /** | |
a345e45d | 37 | * @file cc_hash_table_map_/cond_key_dtor_entry_dealtor.hpp |
4569a895 AT |
38 | * Contains a conditional key destructor, used for exception handling. |
39 | */ | |
40 | ||
5e11f978 | 41 | namespace __gnu_pbds |
4569a895 AT |
42 | { |
43 | namespace detail | |
44 | { | |
a345e45d | 45 | /// Conditional dey destructor, cc_hash. |
4569a895 | 46 | template<typename HT_Map> |
a345e45d | 47 | class cond_dealtor |
4569a895 AT |
48 | { |
49 | public: | |
a345e45d BK |
50 | typedef typename HT_Map::entry entry; |
51 | typedef typename HT_Map::entry_allocator entry_allocator; | |
52 | typedef typename HT_Map::key_type key_type; | |
4569a895 | 53 | |
a345e45d BK |
54 | cond_dealtor(entry_allocator* p_a, entry* p_e) |
55 | : m_p_a(p_a), m_p_e(p_e), m_key_destruct(false), | |
56 | m_no_action_destructor(false) | |
57 | { } | |
4569a895 AT |
58 | |
59 | inline | |
a345e45d | 60 | ~cond_dealtor(); |
4569a895 | 61 | |
a345e45d BK |
62 | void |
63 | set_key_destruct() | |
64 | { m_key_destruct = true; } | |
4569a895 | 65 | |
a345e45d BK |
66 | void |
67 | set_no_action_destructor() | |
68 | { m_no_action_destructor = true; } | |
4569a895 AT |
69 | |
70 | protected: | |
a345e45d BK |
71 | entry_allocator* const m_p_a; |
72 | entry* const m_p_e; | |
4569a895 | 73 | |
a345e45d BK |
74 | bool m_key_destruct; |
75 | bool m_no_action_destructor; | |
4569a895 AT |
76 | }; |
77 | ||
a345e45d | 78 | template<typename HT_Map> |
4569a895 | 79 | inline |
a345e45d BK |
80 | cond_dealtor<HT_Map>:: |
81 | ~cond_dealtor() | |
4569a895 AT |
82 | { |
83 | if (m_no_action_destructor) | |
84 | return; | |
4569a895 AT |
85 | if (m_key_destruct) |
86 | m_p_e->m_value.first.~key_type(); | |
4569a895 AT |
87 | m_p_a->deallocate(m_p_e, 1); |
88 | } | |
4569a895 | 89 | } // namespace detail |
5e11f978 | 90 | } // namespace __gnu_pbds |