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1// Components for manipulating sequences of characters -*- C++ -*-
2
3// Copyright (C) 1997-2025 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/** @file include/string
26 * This is a Standard C++ Library header.
27 */
28
29//
30// ISO C++ 14882: 21 Strings library
31//
32
33#ifndef _GLIBCXX_STRING
34#define _GLIBCXX_STRING 1
35
36#ifdef _GLIBCXX_SYSHDR
37#pragma GCC system_header
38#endif
39
40#include <bits/requires_hosted.h> // containers
41
42#include <bits/c++config.h>
43#include <bits/stringfwd.h>
44#include <bits/char_traits.h>
45#include <bits/allocator.h>
46#include <bits/cpp_type_traits.h>
47#include <bits/localefwd.h> // For operators >>, <<, and getline.
48#include <bits/ostream_insert.h>
49#include <bits/stl_iterator_base_funcs.h>
50#include <bits/stl_iterator.h>
51#include <bits/stl_function.h> // For less
52#include <ext/numeric_traits.h>
53#include <bits/stl_algobase.h>
54#include <bits/refwrap.h>
55#include <bits/range_access.h>
56#include <bits/basic_string.h>
57#include <bits/basic_string.tcc>
58
59#define __glibcxx_want_algorithm_default_value_type
60#define __glibcxx_want_allocator_traits_is_always_equal
61#define __glibcxx_want_constexpr_char_traits
62#define __glibcxx_want_constexpr_string
63#define __glibcxx_want_containers_ranges
64#define __glibcxx_want_erase_if
65#define __glibcxx_want_nonmember_container_access
66#define __glibcxx_want_string_resize_and_overwrite
67#define __glibcxx_want_string_udls
68#define __glibcxx_want_to_string
69#include <bits/version.h>
70
71#if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI
72#include <bits/memory_resource.h>
73namespace std _GLIBCXX_VISIBILITY(default)
74{
75_GLIBCXX_BEGIN_NAMESPACE_VERSION
76 namespace pmr {
77 template<typename _CharT, typename _Traits = char_traits<_CharT>>
78 using basic_string = std::basic_string<_CharT, _Traits,
79 polymorphic_allocator<_CharT>>;
80 using string = basic_string<char>;
81#ifdef _GLIBCXX_USE_CHAR8_T
82 using u8string = basic_string<char8_t>;
83#endif
84 using u16string = basic_string<char16_t>;
85 using u32string = basic_string<char32_t>;
86 using wstring = basic_string<wchar_t>;
87 } // namespace pmr
88_GLIBCXX_END_NAMESPACE_VERSION
89} // namespace std
90#endif // C++17
91
92#ifdef __cpp_lib_erase_if // C++ >= 20 && HOSTED
93namespace std _GLIBCXX_VISIBILITY(default)
94{
95_GLIBCXX_BEGIN_NAMESPACE_VERSION
96
97 template<typename _CharT, typename _Traits, typename _Alloc,
98 typename _Predicate>
99 _GLIBCXX20_CONSTEXPR
100 inline typename basic_string<_CharT, _Traits, _Alloc>::size_type
101 erase_if(basic_string<_CharT, _Traits, _Alloc>& __cont, _Predicate __pred)
102 {
103 using namespace __gnu_cxx;
104 const auto __osz = __cont.size();
105 const auto __end = __cont.end();
106 auto __removed = std::__remove_if(__cont.begin(), __end,
107 __ops::__pred_iter(std::ref(__pred)));
108 __cont.erase(__removed, __end);
109 return __osz - __cont.size();
110 }
111
112 template<typename _CharT, typename _Traits, typename _Alloc,
113 typename _Up _GLIBCXX26_DEF_VAL_T(_CharT)>
114 _GLIBCXX20_CONSTEXPR
115 inline typename basic_string<_CharT, _Traits, _Alloc>::size_type
116 erase(basic_string<_CharT, _Traits, _Alloc>& __cont, const _Up& __value)
117 {
118 using namespace __gnu_cxx;
119 const auto __osz = __cont.size();
120 const auto __end = __cont.end();
121 auto __removed = std::__remove_if(__cont.begin(), __end,
122 __ops::__iter_equals_val(__value));
123 __cont.erase(__removed, __end);
124 return __osz - __cont.size();
125 }
126_GLIBCXX_END_NAMESPACE_VERSION
127} // namespace std
128#endif // __cpp_lib_erase_if
129
130#endif /* _GLIBCXX_STRING */