| 1 | // <bits/erase_if.h> -*- C++ -*- |
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| 2 | |
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| 3 | // Copyright (C) 2015-2021 Free Software Foundation, Inc. |
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| 4 | // |
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| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
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| 6 | // software; you can redistribute it and/or modify it under the |
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| 7 | // terms of the GNU General Public License as published by the |
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| 8 | // Free Software Foundation; either version 3, or (at your option) |
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| 9 | // any later version. |
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| 10 | |
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| 11 | // This library is distributed in the hope that it will be useful, |
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| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | // GNU General Public License for more details. |
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| 15 | |
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| 16 | // Under Section 7 of GPL version 3, you are granted additional |
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| 17 | // permissions described in the GCC Runtime Library Exception, version |
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| 18 | // 3.1, as published by the Free Software Foundation. |
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| 19 | |
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| 20 | // You should have received a copy of the GNU General Public License and |
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| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
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| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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| 23 | // <http://www.gnu.org/licenses/>. |
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| 24 | |
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| 25 | /** @file bits/erase_if.h |
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| 26 | * This is an internal header file, included by other library headers. |
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| 27 | * Do not attempt to use it directly. |
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| 28 | */ |
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| 29 | |
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| 30 | #ifndef _GLIBCXX_ERASE_IF_H |
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| 31 | #define _GLIBCXX_ERASE_IF_H 1 |
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| 32 | |
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| 33 | #pragma GCC system_header |
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| 34 | |
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| 35 | #if __cplusplus >= 201402L |
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| 36 | |
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| 37 | #include <bits/c++config.h> |
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| 38 | |
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| 39 | namespace std |
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| 40 | { |
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| 41 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
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| 42 | |
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| 43 | #if __cplusplus > 201703L |
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| 44 | # define __cpp_lib_erase_if 202002L |
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| 45 | #endif |
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| 46 | |
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| 47 | namespace __detail |
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| 48 | { |
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| 49 | template<typename _Container, typename _Predicate> |
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| 50 | typename _Container::size_type |
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| 51 | __erase_nodes_if(_Container& __cont, _Predicate __pred) |
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| 52 | { |
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| 53 | typename _Container::size_type __num = 0; |
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| 54 | for (auto __iter = __cont.begin(), __last = __cont.end(); |
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| 55 | __iter != __last;) |
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| 56 | { |
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| 57 | if (__pred(*__iter)) |
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| 58 | { |
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| 59 | __iter = __cont.erase(__iter); |
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| 60 | ++__num; |
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| 61 | } |
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| 62 | else |
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| 63 | ++__iter; |
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| 64 | } |
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| 65 | return __num; |
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| 66 | } |
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| 67 | } // namespace __detail |
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| 68 | |
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| 69 | _GLIBCXX_END_NAMESPACE_VERSION |
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| 70 | } // namespace std |
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| 71 | |
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| 72 | #endif // C++14 |
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| 73 | |
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| 74 | #endif // _GLIBCXX_ERASE_IF_H |
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| 75 | |
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