libstdc++
deque
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1 // <deque> -*- C++ -*-
2 
3 // Copyright (C) 2001-2025 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 #ifdef _GLIBCXX_SYSHDR
59 #pragma GCC system_header
60 #endif
61 
62 #include <bits/requires_hosted.h> // containers are hosted only
63 
64 #include <bits/stl_algobase.h>
65 #include <bits/allocator.h>
66 #include <bits/stl_construct.h>
67 #include <bits/stl_uninitialized.h>
68 #include <bits/stl_deque.h>
69 #include <bits/refwrap.h>
70 #include <bits/range_access.h>
71 #include <bits/deque.tcc>
72 
73 #define __glibcxx_want_algorithm_default_value_type
74 #define __glibcxx_want_allocator_traits_is_always_equal
75 #define __glibcxx_want_containers_ranges
76 #define __glibcxx_want_erase_if
77 #define __glibcxx_want_nonmember_container_access
78 #include <bits/version.h>
79 
80 #ifdef _GLIBCXX_DEBUG
81 # include <debug/deque>
82 #endif
83 
84 #if __cplusplus >= 201703L
85 #include <bits/memory_resource.h>
86 namespace std _GLIBCXX_VISIBILITY(default)
87 {
88 _GLIBCXX_BEGIN_NAMESPACE_VERSION
89  namespace pmr
90  {
91  template<typename _Tp>
92  using deque = std::deque<_Tp, polymorphic_allocator<_Tp>>;
93  } // namespace pmr
94 _GLIBCXX_END_NAMESPACE_VERSION
95 } // namespace std
96 #endif // C++17
97 
98 #ifdef __cpp_lib_erase_if // C++ >= 20 && erase_if
99 namespace std _GLIBCXX_VISIBILITY(default)
100 {
101 _GLIBCXX_BEGIN_NAMESPACE_VERSION
102 
103  template<typename _Tp, typename _Alloc, typename _Predicate>
104  inline typename deque<_Tp, _Alloc>::size_type
105  erase_if(deque<_Tp, _Alloc>& __cont, _Predicate __pred)
106  {
107  using namespace __gnu_cxx;
108  _GLIBCXX_STD_C::deque<_Tp, _Alloc>& __ucont = __cont;
109  const auto __osz = __cont.size();
110  const auto __end = __ucont.end();
111  auto __removed = std::__remove_if(__ucont.begin(), __end,
112  __ops::__pred_iter(std::ref(__pred)));
113  if (__removed != __end)
114  {
115  __cont.erase(__niter_wrap(__cont.begin(), __removed),
116  __cont.end());
117  return __osz - __cont.size();
118  }
119 
120  return 0;
121  }
122 
123  template<typename _Tp, typename _Alloc,
124  typename _Up _GLIBCXX26_DEF_VAL_T(_Tp)>
125  inline typename deque<_Tp, _Alloc>::size_type
126  erase(deque<_Tp, _Alloc>& __cont, const _Up& __value)
127  {
128  using namespace __gnu_cxx;
129  _GLIBCXX_STD_C::deque<_Tp, _Alloc>& __ucont = __cont;
130  const auto __osz = __cont.size();
131  const auto __end = __ucont.end();
132  auto __removed = std::__remove_if(__ucont.begin(), __end,
133  __ops::__iter_equals_val(__value));
134  if (__removed != __end)
135  {
136  __cont.erase(__niter_wrap(__cont.begin(), __removed),
137  __cont.end());
138  return __osz - __cont.size();
139  }
140 
141  return 0;
142  }
143 _GLIBCXX_END_NAMESPACE_VERSION
144 } // namespace std
145 #endif // __cpp_lib_erase_if
146 
147 #endif /* _GLIBCXX_DEQUE */