1 | // <bits/erase_if.h> -*- C++ -*- |
2 | |
3 | // Copyright (C) 2015-2019 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 |
7 | // terms of the GNU General Public License as published by the |
8 | // Free Software Foundation; either version 3, or (at your option) |
9 | // any later version. |
10 | |
11 | // This library is distributed in the hope that it will be useful, |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | // GNU 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 | /** @file bits/erase_if.h |
26 | * This is an internal header file, included by other library headers. |
27 | * Do not attempt to use it directly. |
28 | */ |
29 | |
30 | #ifndef _GLIBCXX_ERASE_IF_H |
31 | #define _GLIBCXX_ERASE_IF_H 1 |
32 | |
33 | #pragma GCC system_header |
34 | |
35 | #if __cplusplus >= 201402L |
36 | |
37 | namespace std |
38 | { |
39 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
40 | |
41 | #if __cplusplus > 201703L |
42 | # define __cpp_lib_erase_if 201900L |
43 | #endif |
44 | |
45 | namespace __detail |
46 | { |
47 | template<typename _Container, typename _Predicate> |
48 | typename _Container::size_type |
49 | __erase_nodes_if(_Container& __cont, _Predicate __pred) |
50 | { |
51 | typename _Container::size_type __num = 0; |
52 | for (auto __iter = __cont.begin(), __last = __cont.end(); |
53 | __iter != __last;) |
54 | { |
55 | if (__pred(*__iter)) |
56 | { |
57 | __iter = __cont.erase(__iter); |
58 | ++__num; |
59 | } |
60 | else |
61 | ++__iter; |
62 | } |
63 | return __num; |
64 | } |
65 | } // namespace __detail |
66 | |
67 | _GLIBCXX_END_NAMESPACE_VERSION |
68 | } // namespace std |
69 | |
70 | #endif // C++14 |
71 | |
72 | #endif // _GLIBCXX_ERASE_IF_H |
73 | |