libstdc++
deque
Go to the documentation of this file.
1 // <deque> -*- C++ -*-
2 
3 // Copyright (C) 2001-2024 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 /*
26  *
27  * Copyright (c) 1994
28  * Hewlett-Packard Company
29  *
30  * Permission to use, copy, modify, distribute and sell this software
31  * and its documentation for any purpose is hereby granted without fee,
32  * provided that the above copyright notice appear in all copies and
33  * that both that copyright notice and this permission notice appear
34  * in supporting documentation. Hewlett-Packard Company makes no
35  * representations about the suitability of this software for any
36  * purpose. It is provided "as is" without express or implied warranty.
37  *
38  *
39  * Copyright (c) 1997
40  * Silicon Graphics Computer Systems, Inc.
41  *
42  * Permission to use, copy, modify, distribute and sell this software
43  * and its documentation for any purpose is hereby granted without fee,
44  * provided that the above copyright notice appear in all copies and
45  * that both that copyright notice and this permission notice appear
46  * in supporting documentation. Silicon Graphics makes no
47  * representations about the suitability of this software for any
48  * purpose. It is provided "as is" without express or implied warranty.
49  */
50 
51 /** @file include/deque
52  * This is a Standard C++ Library header.
53  */
54 
55 #ifndef _GLIBCXX_DEQUE
56 #define _GLIBCXX_DEQUE 1
57 
58 #pragma GCC system_header
59 
60 #include <bits/requires_hosted.h> // containers are hosted only
61 
62 #include <bits/stl_algobase.h>
63 #include <bits/allocator.h>
64 #include <bits/stl_construct.h>
65 #include <bits/stl_uninitialized.h>
66 #include <bits/stl_deque.h>
67 #include <bits/refwrap.h>
68 #include <bits/range_access.h>
69 #include <bits/deque.tcc>
70 
71 #define __glibcxx_want_erase_if
72 #define __glibcxx_want_nonmember_container_access
73 #include <bits/version.h>
74 
75 #ifdef _GLIBCXX_DEBUG
76 # include <debug/deque>
77 #endif
78 
79 #if __cplusplus >= 201703L
80 #include <bits/memory_resource.h>
81 namespace std _GLIBCXX_VISIBILITY(default)
82 {
83 _GLIBCXX_BEGIN_NAMESPACE_VERSION
84  namespace pmr
85  {
86  template<typename _Tp>
87  using deque = std::deque<_Tp, polymorphic_allocator<_Tp>>;
88  } // namespace pmr
89 _GLIBCXX_END_NAMESPACE_VERSION
90 } // namespace std
91 #endif // C++17
92 
93 #ifdef __cpp_lib_erase_if // C++ >= 20 && erase_if
94 namespace std _GLIBCXX_VISIBILITY(default)
95 {
96 _GLIBCXX_BEGIN_NAMESPACE_VERSION
97 
98  template<typename _Tp, typename _Alloc, typename _Predicate>
99  inline typename deque<_Tp, _Alloc>::size_type
100  erase_if(deque<_Tp, _Alloc>& __cont, _Predicate __pred)
101  {
102  using namespace __gnu_cxx;
103  _GLIBCXX_STD_C::deque<_Tp, _Alloc>& __ucont = __cont;
104  const auto __osz = __cont.size();
105  const auto __end = __ucont.end();
106  auto __removed = std::__remove_if(__ucont.begin(), __end,
107  __ops::__pred_iter(std::ref(__pred)));
108  if (__removed != __end)
109  {
110  __cont.erase(__niter_wrap(__cont.begin(), __removed),
111  __cont.end());
112  return __osz - __cont.size();
113  }
114 
115  return 0;
116  }
117 
118  template<typename _Tp, typename _Alloc, typename _Up>
119  inline typename deque<_Tp, _Alloc>::size_type
120  erase(deque<_Tp, _Alloc>& __cont, const _Up& __value)
121  {
122  using namespace __gnu_cxx;
123  _GLIBCXX_STD_C::deque<_Tp, _Alloc>& __ucont = __cont;
124  const auto __osz = __cont.size();
125  const auto __end = __ucont.end();
126  auto __removed = std::__remove_if(__ucont.begin(), __end,
127  __ops::__iter_equals_val(__value));
128  if (__removed != __end)
129  {
130  __cont.erase(__niter_wrap(__cont.begin(), __removed),
131  __cont.end());
132  return __osz - __cont.size();
133  }
134 
135  return 0;
136  }
137 _GLIBCXX_END_NAMESPACE_VERSION
138 } // namespace std
139 #endif // __cpp_lib_erase_if
140 
141 #endif /* _GLIBCXX_DEQUE */