Where Online Learning is simpler!
The C and C++ Include Header Files
/usr/include/c++/13/bits/enable_special_members.h
$ cat -n /usr/include/c++/13/bits/enable_special_members.h 1 // <bits/enable_special_members.h> -*- C++ -*- 2 3 // Copyright (C) 2013-2023 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/enable_special_members.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 _ENABLE_SPECIAL_MEMBERS_H 31 #define _ENABLE_SPECIAL_MEMBERS_H 1 32 33 #pragma GCC system_header 34 35 #include <bits/c++config.h> 36 37 namespace std _GLIBCXX_VISIBILITY(default) 38 { 39 _GLIBCXX_BEGIN_NAMESPACE_VERSION 40 /// @cond undocumented 41 42 struct _Enable_default_constructor_tag 43 { 44 explicit constexpr _Enable_default_constructor_tag() = default; 45 }; 46 47 /** 48 * @brief A mixin helper to conditionally enable or disable the default 49 * constructor. 50 * @sa _Enable_special_members 51 */ 52 template<bool _Switch, typename _Tag = void> 53 struct _Enable_default_constructor 54 { 55 constexpr _Enable_default_constructor() noexcept = default; 56 constexpr _Enable_default_constructor(_Enable_default_constructor const&) 57 noexcept = default; 58 constexpr _Enable_default_constructor(_Enable_default_constructor&&) 59 noexcept = default; 60 _Enable_default_constructor& 61 operator=(_Enable_default_constructor const&) noexcept = default; 62 _Enable_default_constructor& 63 operator=(_Enable_default_constructor&&) noexcept = default; 64 65 // Can be used in other ctors. 66 constexpr explicit 67 _Enable_default_constructor(_Enable_default_constructor_tag) { } 68 }; 69 70 71 /** 72 * @brief A mixin helper to conditionally enable or disable the default 73 * destructor. 74 * @sa _Enable_special_members 75 */ 76 template<bool _Switch, typename _Tag = void> 77 struct _Enable_destructor { }; 78 79 /** 80 * @brief A mixin helper to conditionally enable or disable the copy/move 81 * special members. 82 * @sa _Enable_special_members 83 */ 84 template<bool _Copy, bool _CopyAssignment, 85 bool _Move, bool _MoveAssignment, 86 typename _Tag = void> 87 struct _Enable_copy_move { }; 88 89 /** 90 * @brief A mixin helper to conditionally enable or disable the special 91 * members. 92 * 93 * The @c _Tag type parameter is to make mixin bases unique and thus avoid 94 * ambiguities. 95 */ 96 template<bool _Default, bool _Destructor, 97 bool _Copy, bool _CopyAssignment, 98 bool _Move, bool _MoveAssignment, 99 typename _Tag = void> 100 struct _Enable_special_members 101 : private _Enable_default_constructor<_Default, _Tag>, 102 private _Enable_destructor<_Destructor, _Tag>, 103 private _Enable_copy_move<_Copy, _CopyAssignment, 104 _Move, _MoveAssignment, 105 _Tag> 106 { }; 107 108 // Boilerplate follows. 109 110 template<typename _Tag> 111 struct _Enable_default_constructor<false, _Tag> 112 { 113 constexpr _Enable_default_constructor() noexcept = delete; 114 constexpr _Enable_default_constructor(_Enable_default_constructor const&) 115 noexcept = default; 116 constexpr _Enable_default_constructor(_Enable_default_constructor&&) 117 noexcept = default; 118 _Enable_default_constructor& 119 operator=(_Enable_default_constructor const&) noexcept = default; 120 _Enable_default_constructor& 121 operator=(_Enable_default_constructor&&) noexcept = default; 122 123 // Can be used in other ctors. 124 constexpr explicit 125 _Enable_default_constructor(_Enable_default_constructor_tag) { } 126 }; 127 128 template<typename _Tag> 129 struct _Enable_destructor<false, _Tag> 130 { ~_Enable_destructor() noexcept = delete; }; 131 132 template<typename _Tag> 133 struct _Enable_copy_move<false, true, true, true, _Tag> 134 { 135 constexpr _Enable_copy_move() noexcept = default; 136 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 137 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 138 _Enable_copy_move& 139 operator=(_Enable_copy_move const&) noexcept = default; 140 _Enable_copy_move& 141 operator=(_Enable_copy_move&&) noexcept = default; 142 }; 143 144 template<typename _Tag> 145 struct _Enable_copy_move<true, false, true, true, _Tag> 146 { 147 constexpr _Enable_copy_move() noexcept = default; 148 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 149 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 150 _Enable_copy_move& 151 operator=(_Enable_copy_move const&) noexcept = delete; 152 _Enable_copy_move& 153 operator=(_Enable_copy_move&&) noexcept = default; 154 }; 155 156 template<typename _Tag> 157 struct _Enable_copy_move<false, false, true, true, _Tag> 158 { 159 constexpr _Enable_copy_move() noexcept = default; 160 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 161 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 162 _Enable_copy_move& 163 operator=(_Enable_copy_move const&) noexcept = delete; 164 _Enable_copy_move& 165 operator=(_Enable_copy_move&&) noexcept = default; 166 }; 167 168 template<typename _Tag> 169 struct _Enable_copy_move<true, true, false, true, _Tag> 170 { 171 constexpr _Enable_copy_move() noexcept = default; 172 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 173 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 174 _Enable_copy_move& 175 operator=(_Enable_copy_move const&) noexcept = default; 176 _Enable_copy_move& 177 operator=(_Enable_copy_move&&) noexcept = default; 178 }; 179 180 template<typename _Tag> 181 struct _Enable_copy_move<false, true, false, true, _Tag> 182 { 183 constexpr _Enable_copy_move() noexcept = default; 184 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 185 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 186 _Enable_copy_move& 187 operator=(_Enable_copy_move const&) noexcept = default; 188 _Enable_copy_move& 189 operator=(_Enable_copy_move&&) noexcept = default; 190 }; 191 192 template<typename _Tag> 193 struct _Enable_copy_move<true, false, false, true, _Tag> 194 { 195 constexpr _Enable_copy_move() noexcept = default; 196 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 197 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 198 _Enable_copy_move& 199 operator=(_Enable_copy_move const&) noexcept = delete; 200 _Enable_copy_move& 201 operator=(_Enable_copy_move&&) noexcept = default; 202 }; 203 204 template<typename _Tag> 205 struct _Enable_copy_move<false, false, false, true, _Tag> 206 { 207 constexpr _Enable_copy_move() noexcept = default; 208 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 209 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 210 _Enable_copy_move& 211 operator=(_Enable_copy_move const&) noexcept = delete; 212 _Enable_copy_move& 213 operator=(_Enable_copy_move&&) noexcept = default; 214 }; 215 216 template<typename _Tag> 217 struct _Enable_copy_move<true, true, true, false, _Tag> 218 { 219 constexpr _Enable_copy_move() noexcept = default; 220 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 221 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 222 _Enable_copy_move& 223 operator=(_Enable_copy_move const&) noexcept = default; 224 _Enable_copy_move& 225 operator=(_Enable_copy_move&&) noexcept = delete; 226 }; 227 228 template<typename _Tag> 229 struct _Enable_copy_move<false, true, true, false, _Tag> 230 { 231 constexpr _Enable_copy_move() noexcept = default; 232 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 233 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 234 _Enable_copy_move& 235 operator=(_Enable_copy_move const&) noexcept = default; 236 _Enable_copy_move& 237 operator=(_Enable_copy_move&&) noexcept = delete; 238 }; 239 240 template<typename _Tag> 241 struct _Enable_copy_move<true, false, true, false, _Tag> 242 { 243 constexpr _Enable_copy_move() noexcept = default; 244 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 245 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 246 _Enable_copy_move& 247 operator=(_Enable_copy_move const&) noexcept = delete; 248 _Enable_copy_move& 249 operator=(_Enable_copy_move&&) noexcept = delete; 250 }; 251 252 template<typename _Tag> 253 struct _Enable_copy_move<false, false, true, false, _Tag> 254 { 255 constexpr _Enable_copy_move() noexcept = default; 256 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 257 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = default; 258 _Enable_copy_move& 259 operator=(_Enable_copy_move const&) noexcept = delete; 260 _Enable_copy_move& 261 operator=(_Enable_copy_move&&) noexcept = delete; 262 }; 263 264 template<typename _Tag> 265 struct _Enable_copy_move<true, true, false, false, _Tag> 266 { 267 constexpr _Enable_copy_move() noexcept = default; 268 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 269 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 270 _Enable_copy_move& 271 operator=(_Enable_copy_move const&) noexcept = default; 272 _Enable_copy_move& 273 operator=(_Enable_copy_move&&) noexcept = delete; 274 }; 275 276 template<typename _Tag> 277 struct _Enable_copy_move<false, true, false, false, _Tag> 278 { 279 constexpr _Enable_copy_move() noexcept = default; 280 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 281 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 282 _Enable_copy_move& 283 operator=(_Enable_copy_move const&) noexcept = default; 284 _Enable_copy_move& 285 operator=(_Enable_copy_move&&) noexcept = delete; 286 }; 287 288 template<typename _Tag> 289 struct _Enable_copy_move<true, false, false, false, _Tag> 290 { 291 constexpr _Enable_copy_move() noexcept = default; 292 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = default; 293 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 294 _Enable_copy_move& 295 operator=(_Enable_copy_move const&) noexcept = delete; 296 _Enable_copy_move& 297 operator=(_Enable_copy_move&&) noexcept = delete; 298 }; 299 300 template<typename _Tag> 301 struct _Enable_copy_move<false, false, false, false, _Tag> 302 { 303 constexpr _Enable_copy_move() noexcept = default; 304 constexpr _Enable_copy_move(_Enable_copy_move const&) noexcept = delete; 305 constexpr _Enable_copy_move(_Enable_copy_move&&) noexcept = delete; 306 _Enable_copy_move& 307 operator=(_Enable_copy_move const&) noexcept = delete; 308 _Enable_copy_move& 309 operator=(_Enable_copy_move&&) noexcept = delete; 310 }; 311 312 /// @endcond 313 _GLIBCXX_END_NAMESPACE_VERSION 314 } // namespace std 315 316 #endif // _ENABLE_SPECIAL_MEMBERS_H
Contact us
|
About us
|
Term of use
|
Copyright © 2000-2025 MyWebUniversity.com ™
