Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1 | // -*- C++ -*- |
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
Howard Hinnant | f5256e1 | 2010-05-11 21:36:01 +0000 | [diff] [blame] | 4 | // The LLVM Compiler Infrastructure |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 5 | // |
Howard Hinnant | b64f8b0 | 2010-11-16 22:09:02 +0000 | [diff] [blame] | 6 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 7 | // Source Licenses. See LICENSE.TXT for details. |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 8 | // |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #ifndef _LIBCPP_FUNCTIONAL_BASE_03 |
| 12 | #define _LIBCPP_FUNCTIONAL_BASE_03 |
| 13 | |
| 14 | // manual variadic expansion for <functional> |
| 15 | |
| 16 | // __weak_result_type |
| 17 | |
| 18 | template <class _Tp> |
| 19 | struct __derives_from_unary_function |
| 20 | { |
| 21 | private: |
| 22 | struct __two {char _; char __;}; |
| 23 | static __two __test(...); |
| 24 | template <class _A, class _R> |
| 25 | static unary_function<_A, _R> |
| 26 | __test(const volatile unary_function<_A, _R>*); |
| 27 | public: |
| 28 | static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; |
| 29 | typedef decltype(__test((_Tp*)0)) type; |
| 30 | }; |
| 31 | |
| 32 | template <class _Tp> |
| 33 | struct __derives_from_binary_function |
| 34 | { |
| 35 | private: |
| 36 | struct __two {char _; char __;}; |
| 37 | static __two __test(...); |
| 38 | template <class _A1, class _A2, class _R> |
| 39 | static binary_function<_A1, _A2, _R> |
| 40 | __test(const volatile binary_function<_A1, _A2, _R>*); |
| 41 | public: |
| 42 | static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; |
| 43 | typedef decltype(__test((_Tp*)0)) type; |
| 44 | }; |
| 45 | |
| 46 | template <class _Tp, bool = __derives_from_unary_function<_Tp>::value> |
| 47 | struct __maybe_derive_from_unary_function // bool is true |
| 48 | : public __derives_from_unary_function<_Tp>::type |
| 49 | { |
| 50 | }; |
| 51 | |
| 52 | template <class _Tp> |
| 53 | struct __maybe_derive_from_unary_function<_Tp, false> |
| 54 | { |
| 55 | }; |
| 56 | |
| 57 | template <class _Tp, bool = __derives_from_binary_function<_Tp>::value> |
| 58 | struct __maybe_derive_from_binary_function // bool is true |
| 59 | : public __derives_from_binary_function<_Tp>::type |
| 60 | { |
| 61 | }; |
| 62 | |
| 63 | template <class _Tp> |
| 64 | struct __maybe_derive_from_binary_function<_Tp, false> |
| 65 | { |
| 66 | }; |
| 67 | |
| 68 | template <class _Tp, bool = __has_result_type<_Tp>::value> |
| 69 | struct __weak_result_type_imp // bool is true |
| 70 | : public __maybe_derive_from_unary_function<_Tp>, |
| 71 | public __maybe_derive_from_binary_function<_Tp> |
| 72 | { |
| 73 | typedef typename _Tp::result_type result_type; |
| 74 | }; |
| 75 | |
| 76 | template <class _Tp> |
| 77 | struct __weak_result_type_imp<_Tp, false> |
| 78 | : public __maybe_derive_from_unary_function<_Tp>, |
| 79 | public __maybe_derive_from_binary_function<_Tp> |
| 80 | { |
| 81 | }; |
| 82 | |
| 83 | template <class _Tp> |
| 84 | struct __weak_result_type |
| 85 | : public __weak_result_type_imp<typename remove_reference<_Tp>::type> |
| 86 | { |
| 87 | }; |
| 88 | |
| 89 | // 0 argument case |
| 90 | |
| 91 | template <class _R> |
| 92 | struct __weak_result_type<_R ()> |
| 93 | { |
| 94 | typedef _R result_type; |
| 95 | }; |
| 96 | |
| 97 | template <class _R> |
| 98 | struct __weak_result_type<_R (&)()> |
| 99 | { |
| 100 | typedef _R result_type; |
| 101 | }; |
| 102 | |
| 103 | template <class _R> |
| 104 | struct __weak_result_type<_R (*)()> |
| 105 | { |
| 106 | typedef _R result_type; |
| 107 | }; |
| 108 | |
| 109 | // 1 argument case |
| 110 | |
| 111 | template <class _R, class _A1> |
| 112 | struct __weak_result_type<_R (_A1)> |
| 113 | : public unary_function<_A1, _R> |
| 114 | { |
| 115 | }; |
| 116 | |
| 117 | template <class _R, class _A1> |
| 118 | struct __weak_result_type<_R (&)(_A1)> |
| 119 | : public unary_function<_A1, _R> |
| 120 | { |
| 121 | }; |
| 122 | |
| 123 | template <class _R, class _A1> |
| 124 | struct __weak_result_type<_R (*)(_A1)> |
| 125 | : public unary_function<_A1, _R> |
| 126 | { |
| 127 | }; |
| 128 | |
| 129 | template <class _R, class _C> |
| 130 | struct __weak_result_type<_R (_C::*)()> |
| 131 | : public unary_function<_C*, _R> |
| 132 | { |
| 133 | }; |
| 134 | |
| 135 | template <class _R, class _C> |
| 136 | struct __weak_result_type<_R (_C::*)() const> |
| 137 | : public unary_function<const _C*, _R> |
| 138 | { |
| 139 | }; |
| 140 | |
| 141 | template <class _R, class _C> |
| 142 | struct __weak_result_type<_R (_C::*)() volatile> |
| 143 | : public unary_function<volatile _C*, _R> |
| 144 | { |
| 145 | }; |
| 146 | |
| 147 | template <class _R, class _C> |
| 148 | struct __weak_result_type<_R (_C::*)() const volatile> |
| 149 | : public unary_function<const volatile _C*, _R> |
| 150 | { |
| 151 | }; |
| 152 | |
| 153 | // 2 argument case |
| 154 | |
| 155 | template <class _R, class _A1, class _A2> |
| 156 | struct __weak_result_type<_R (_A1, _A2)> |
| 157 | : public binary_function<_A1, _A2, _R> |
| 158 | { |
| 159 | }; |
| 160 | |
| 161 | template <class _R, class _A1, class _A2> |
| 162 | struct __weak_result_type<_R (*)(_A1, _A2)> |
| 163 | : public binary_function<_A1, _A2, _R> |
| 164 | { |
| 165 | }; |
| 166 | |
| 167 | template <class _R, class _A1, class _A2> |
| 168 | struct __weak_result_type<_R (&)(_A1, _A2)> |
| 169 | : public binary_function<_A1, _A2, _R> |
| 170 | { |
| 171 | }; |
| 172 | |
| 173 | template <class _R, class _C, class _A1> |
| 174 | struct __weak_result_type<_R (_C::*)(_A1)> |
| 175 | : public binary_function<_C*, _A1, _R> |
| 176 | { |
| 177 | }; |
| 178 | |
| 179 | template <class _R, class _C, class _A1> |
| 180 | struct __weak_result_type<_R (_C::*)(_A1) const> |
| 181 | : public binary_function<const _C*, _A1, _R> |
| 182 | { |
| 183 | }; |
| 184 | |
| 185 | template <class _R, class _C, class _A1> |
| 186 | struct __weak_result_type<_R (_C::*)(_A1) volatile> |
| 187 | : public binary_function<volatile _C*, _A1, _R> |
| 188 | { |
| 189 | }; |
| 190 | |
| 191 | template <class _R, class _C, class _A1> |
| 192 | struct __weak_result_type<_R (_C::*)(_A1) const volatile> |
| 193 | : public binary_function<const volatile _C*, _A1, _R> |
| 194 | { |
| 195 | }; |
| 196 | |
| 197 | // 3 or more arguments |
| 198 | |
| 199 | template <class _R, class _A1, class _A2, class _A3> |
| 200 | struct __weak_result_type<_R (_A1, _A2, _A3)> |
| 201 | { |
| 202 | typedef _R result_type; |
| 203 | }; |
| 204 | |
| 205 | template <class _R, class _A1, class _A2, class _A3> |
| 206 | struct __weak_result_type<_R (&)(_A1, _A2, _A3)> |
| 207 | { |
| 208 | typedef _R result_type; |
| 209 | }; |
| 210 | |
| 211 | template <class _R, class _A1, class _A2, class _A3> |
| 212 | struct __weak_result_type<_R (*)(_A1, _A2, _A3)> |
| 213 | { |
| 214 | typedef _R result_type; |
| 215 | }; |
| 216 | |
| 217 | template <class _R, class _C, class _A1, class _A2> |
| 218 | struct __weak_result_type<_R (_C::*)(_A1, _A2)> |
| 219 | { |
| 220 | typedef _R result_type; |
| 221 | }; |
| 222 | |
| 223 | template <class _R, class _C, class _A1, class _A2> |
| 224 | struct __weak_result_type<_R (_C::*)(_A1, _A2) const> |
| 225 | { |
| 226 | typedef _R result_type; |
| 227 | }; |
| 228 | |
| 229 | template <class _R, class _C, class _A1, class _A2> |
| 230 | struct __weak_result_type<_R (_C::*)(_A1, _A2) volatile> |
| 231 | { |
| 232 | typedef _R result_type; |
| 233 | }; |
| 234 | |
| 235 | // __invoke |
| 236 | |
| 237 | // __ref_return0 |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 238 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 239 | // template <class _Tp, bool _HasResultType> |
| 240 | // struct ________ref_return0 // _HasResultType is true |
| 241 | // { |
| 242 | // typedef typename _Tp::result_type type; |
| 243 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 244 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 245 | // template <class _Tp> |
| 246 | // struct ________ref_return0<_Tp, false> |
| 247 | // { |
| 248 | // typedef void type; |
| 249 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 250 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 251 | // template <class _Tp, bool _IsClass> |
| 252 | // struct ____ref_return0 // _IsClass is true |
| 253 | // : public ________ref_return0<_Tp, __has_result_type<typename remove_cv<_Tp>::type>::value> |
| 254 | // { |
| 255 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 256 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 257 | // template <class _Tp, bool _HasResultType> |
| 258 | // struct ______ref_return0 // _HasResultType is true |
| 259 | // { |
| 260 | // typedef typename __callable_type<_Tp>::result_type type; |
| 261 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 262 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 263 | // template <class _Tp> |
| 264 | // struct ______ref_return0<_Tp, false> // pointer to member data |
| 265 | // { |
| 266 | // typedef void type; |
| 267 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 268 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 269 | // template <class _Tp> |
| 270 | // struct ____ref_return0<_Tp, false> |
| 271 | // : public ______ref_return0<typename remove_cv<_Tp>::type, |
| 272 | // __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value> |
| 273 | // { |
| 274 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 275 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 276 | // template <class _Tp> |
| 277 | // struct __ref_return0 |
| 278 | // : public ____ref_return0<typename remove_reference<_Tp>::type, |
| 279 | // is_class<typename remove_reference<_Tp>::type>::value> |
| 280 | // { |
| 281 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 282 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 283 | // __ref_return1 |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 284 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 285 | // template <class _Tp, bool _IsClass, class _A0> |
| 286 | // struct ____ref_return1 // _IsClass is true |
| 287 | // { |
| 288 | // typedef typename result_of<_Tp(_A0)>::type type; |
| 289 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 290 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 291 | // template <class _Tp, bool _HasResultType, class _A0> |
| 292 | // struct ______ref_return1 // _HasResultType is true |
| 293 | // { |
| 294 | // typedef typename __callable_type<_Tp>::result_type type; |
| 295 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 296 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 297 | // template <class _Tp, class _A0, bool> |
| 298 | // struct __ref_return1_member_data1; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 299 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 300 | // template <class _R, class _C, class _A0> |
| 301 | // struct __ref_return1_member_data1<_R _C::*, _A0, true> |
| 302 | // { |
| 303 | // typedef typename __apply_cv<_A0, _R>::type& type; |
| 304 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 305 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 306 | // template <class _R, class _C, class _A0> |
| 307 | // struct __ref_return1_member_data1<_R _C::*, _A0, false> |
| 308 | // { |
| 309 | // static _A0 __a; |
| 310 | // typedef typename __apply_cv<decltype(*__a), _R>::type& type; |
| 311 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 312 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 313 | // template <class _Tp, class _A0> |
| 314 | // struct __ref_return1_member_data; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 315 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 316 | // template <class _R, class _C, class _A0> |
| 317 | // struct __ref_return1_member_data<_R _C::*, _A0> |
| 318 | // : public __ref_return1_member_data1<_R _C::*, _A0, |
| 319 | // is_same<typename remove_cv<_C>::type, |
| 320 | // typename remove_cv<typename remove_reference<_A0>::type>::type>::value> |
| 321 | // { |
| 322 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 323 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 324 | // template <class _Tp, class _A0> |
| 325 | // struct ______ref_return1<_Tp, false, _A0> // pointer to member data |
| 326 | // : public __ref_return1_member_data<typename remove_cv<_Tp>::type, _A0> |
| 327 | // { |
| 328 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 329 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 330 | // template <class _Tp, class _A0> |
| 331 | // struct ____ref_return1<_Tp, false, _A0> |
| 332 | // : public ______ref_return1<typename remove_cv<_Tp>::type, |
| 333 | // __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0> |
| 334 | // { |
| 335 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 336 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 337 | // template <class _Tp, class _A0> |
| 338 | // struct __ref_return1 |
| 339 | // : public ____ref_return1<typename remove_reference<_Tp>::type, |
| 340 | // is_class<typename remove_reference<_Tp>::type>::value, _A0> |
| 341 | // { |
| 342 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 343 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 344 | // __ref_return2 |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 345 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 346 | // template <class _Tp, bool _IsClass, class _A0, class _A1> |
| 347 | // struct ____ref_return2 // _IsClass is true |
| 348 | // { |
| 349 | // typedef typename result_of<_Tp(_A0, _A1)>::type type; |
| 350 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 351 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 352 | // template <class _Tp, bool _HasResultType, class _A0, class _A1> |
| 353 | // struct ______ref_return2 // _HasResultType is true |
| 354 | // { |
| 355 | // typedef typename __callable_type<_Tp>::result_type type; |
| 356 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 357 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 358 | // template <class _Tp> |
| 359 | // struct ______ref_return2<_Tp, false, class _A0, class _A1> // pointer to member data |
| 360 | // { |
| 361 | // static_assert(sizeof(_Tp) == 0, "An attempt has been made to `call` a pointer" |
| 362 | // " to member data with too many arguments."); |
| 363 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 364 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 365 | // template <class _Tp, class _A0, class _A1> |
| 366 | // struct ____ref_return2<_Tp, false, _A0, _A1> |
| 367 | // : public ______ref_return2<typename remove_cv<_Tp>::type, |
| 368 | // __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0, _A1> |
| 369 | // { |
| 370 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 371 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 372 | // template <class _Tp, class _A0, class _A1> |
| 373 | // struct __ref_return2 |
| 374 | // : public ____ref_return2<typename remove_reference<_Tp>::type, |
| 375 | // is_class<typename remove_reference<_Tp>::type>::value, _A0, _A1> |
| 376 | // { |
| 377 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 378 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 379 | // __ref_return3 |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 380 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 381 | // template <class _Tp, bool _IsClass, class _A0, class _A1, class _A2> |
| 382 | // struct ____ref_return3 // _IsClass is true |
| 383 | // { |
| 384 | // typedef typename result_of<_Tp(_A0, _A1, _A2)>::type type; |
| 385 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 386 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 387 | // template <class _Tp, bool _HasResultType, class _A0, class _A1, class _A2> |
| 388 | // struct ______ref_return3 // _HasResultType is true |
| 389 | // { |
| 390 | // typedef typename __callable_type<_Tp>::result_type type; |
| 391 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 392 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 393 | // template <class _Tp> |
| 394 | // struct ______ref_return3<_Tp, false, class _A0, class _A1, class _A2> // pointer to member data |
| 395 | // { |
| 396 | // static_assert(sizeof(_Tp) == 0, "An attempt has been made to `call` a pointer" |
| 397 | // " to member data with too many arguments."); |
| 398 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 399 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 400 | // template <class _Tp, class _A0, class _A1, class _A2> |
| 401 | // struct ____ref_return3<_Tp, false, _A0, _A1, _A2> |
| 402 | // : public ______ref_return3<typename remove_cv<_Tp>::type, |
| 403 | // __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0, _A1, _A2> |
| 404 | // { |
| 405 | // }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 406 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 407 | // template <class _Tp, class _A0, class _A1, class _A2> |
| 408 | // struct __ref_return3 |
| 409 | // : public ____ref_return3<typename remove_reference<_Tp>::type, |
| 410 | // is_class<typename remove_reference<_Tp>::type>::value, _A0, _A1, _A2> |
| 411 | // { |
| 412 | // }; |
| 413 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 414 | // first bullet |
| 415 | |
| 416 | template <class _R, class _T, class _T1> |
| 417 | inline _LIBCPP_INLINE_VISIBILITY |
| 418 | typename enable_if |
| 419 | < |
| 420 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 421 | _R |
| 422 | >::type |
| 423 | __invoke(_R (_T::*__f)(), _T1& __t1) |
| 424 | { |
| 425 | return (__t1.*__f)(); |
| 426 | } |
| 427 | |
| 428 | template <class _R, class _T, class _T1, class _A0> |
| 429 | inline _LIBCPP_INLINE_VISIBILITY |
| 430 | typename enable_if |
| 431 | < |
| 432 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 433 | _R |
| 434 | >::type |
| 435 | __invoke(_R (_T::*__f)(_A0), _T1& __t1, _A0& __a0) |
| 436 | { |
| 437 | return (__t1.*__f)(__a0); |
| 438 | } |
| 439 | |
| 440 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 441 | inline _LIBCPP_INLINE_VISIBILITY |
| 442 | typename enable_if |
| 443 | < |
| 444 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 445 | _R |
| 446 | >::type |
| 447 | __invoke(_R (_T::*__f)(_A0, _A1), _T1& __t1, _A0& __a0, _A1& __a1) |
| 448 | { |
| 449 | return (__t1.*__f)(__a0, __a1); |
| 450 | } |
| 451 | |
| 452 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 453 | inline _LIBCPP_INLINE_VISIBILITY |
| 454 | typename enable_if |
| 455 | < |
| 456 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 457 | _R |
| 458 | >::type |
| 459 | __invoke(_R (_T::*__f)(_A0, _A1, _A2), _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 460 | { |
| 461 | return (__t1.*__f)(__a0, __a1, __a2); |
| 462 | } |
| 463 | |
| 464 | template <class _R, class _T, class _T1> |
| 465 | inline _LIBCPP_INLINE_VISIBILITY |
| 466 | typename enable_if |
| 467 | < |
| 468 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 469 | _R |
| 470 | >::type |
| 471 | __invoke(_R (_T::*__f)() const, _T1& __t1) |
| 472 | { |
| 473 | return (__t1.*__f)(); |
| 474 | } |
| 475 | |
| 476 | template <class _R, class _T, class _T1, class _A0> |
| 477 | inline _LIBCPP_INLINE_VISIBILITY |
| 478 | typename enable_if |
| 479 | < |
| 480 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 481 | _R |
| 482 | >::type |
| 483 | __invoke(_R (_T::*__f)(_A0) const, _T1& __t1, _A0& __a0) |
| 484 | { |
| 485 | return (__t1.*__f)(__a0); |
| 486 | } |
| 487 | |
| 488 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 489 | inline _LIBCPP_INLINE_VISIBILITY |
| 490 | typename enable_if |
| 491 | < |
| 492 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 493 | _R |
| 494 | >::type |
| 495 | __invoke(_R (_T::*__f)(_A0, _A1) const, _T1& __t1, _A0& __a0, _A1& __a1) |
| 496 | { |
| 497 | return (__t1.*__f)(__a0, __a1); |
| 498 | } |
| 499 | |
| 500 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 501 | inline _LIBCPP_INLINE_VISIBILITY |
| 502 | typename enable_if |
| 503 | < |
| 504 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 505 | _R |
| 506 | >::type |
| 507 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) const, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 508 | { |
| 509 | return (__t1.*__f)(__a0, __a1, __a2); |
| 510 | } |
| 511 | |
| 512 | template <class _R, class _T, class _T1> |
| 513 | inline _LIBCPP_INLINE_VISIBILITY |
| 514 | typename enable_if |
| 515 | < |
| 516 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 517 | _R |
| 518 | >::type |
| 519 | __invoke(_R (_T::*__f)() volatile, _T1& __t1) |
| 520 | { |
| 521 | return (__t1.*__f)(); |
| 522 | } |
| 523 | |
| 524 | template <class _R, class _T, class _T1, class _A0> |
| 525 | inline _LIBCPP_INLINE_VISIBILITY |
| 526 | typename enable_if |
| 527 | < |
| 528 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 529 | _R |
| 530 | >::type |
| 531 | __invoke(_R (_T::*__f)(_A0) volatile, _T1& __t1, _A0& __a0) |
| 532 | { |
| 533 | return (__t1.*__f)(__a0); |
| 534 | } |
| 535 | |
| 536 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 537 | inline _LIBCPP_INLINE_VISIBILITY |
| 538 | typename enable_if |
| 539 | < |
| 540 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 541 | _R |
| 542 | >::type |
| 543 | __invoke(_R (_T::*__f)(_A0, _A1) volatile, _T1& __t1, _A0& __a0, _A1& __a1) |
| 544 | { |
| 545 | return (__t1.*__f)(__a0, __a1); |
| 546 | } |
| 547 | |
| 548 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 549 | inline _LIBCPP_INLINE_VISIBILITY |
| 550 | typename enable_if |
| 551 | < |
| 552 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 553 | _R |
| 554 | >::type |
| 555 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) volatile, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 556 | { |
| 557 | return (__t1.*__f)(__a0, __a1, __a2); |
| 558 | } |
| 559 | |
| 560 | template <class _R, class _T, class _T1> |
| 561 | inline _LIBCPP_INLINE_VISIBILITY |
| 562 | typename enable_if |
| 563 | < |
| 564 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 565 | _R |
| 566 | >::type |
| 567 | __invoke(_R (_T::*__f)() const volatile, _T1& __t1) |
| 568 | { |
| 569 | return (__t1.*__f)(); |
| 570 | } |
| 571 | |
| 572 | template <class _R, class _T, class _T1, class _A0> |
| 573 | inline _LIBCPP_INLINE_VISIBILITY |
| 574 | typename enable_if |
| 575 | < |
| 576 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 577 | _R |
| 578 | >::type |
| 579 | __invoke(_R (_T::*__f)(_A0) const volatile, _T1& __t1, _A0& __a0) |
| 580 | { |
| 581 | return (__t1.*__f)(__a0); |
| 582 | } |
| 583 | |
| 584 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 585 | inline _LIBCPP_INLINE_VISIBILITY |
| 586 | typename enable_if |
| 587 | < |
| 588 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 589 | _R |
| 590 | >::type |
| 591 | __invoke(_R (_T::*__f)(_A0, _A1) const volatile, _T1& __t1, _A0& __a0, _A1& __a1) |
| 592 | { |
| 593 | return (__t1.*__f)(__a0, __a1); |
| 594 | } |
| 595 | |
| 596 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 597 | inline _LIBCPP_INLINE_VISIBILITY |
| 598 | typename enable_if |
| 599 | < |
| 600 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 601 | _R |
| 602 | >::type |
| 603 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) const volatile, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 604 | { |
| 605 | return (__t1.*__f)(__a0, __a1, __a2); |
| 606 | } |
| 607 | |
| 608 | // second bullet |
| 609 | |
| 610 | template <class _R, class _T, class _T1> |
| 611 | inline _LIBCPP_INLINE_VISIBILITY |
| 612 | typename enable_if |
| 613 | < |
| 614 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 615 | _R |
| 616 | >::type |
| 617 | __invoke(_R (_T::*__f)(), _T1 __t1) |
| 618 | { |
| 619 | return ((*__t1).*__f)(); |
| 620 | } |
| 621 | |
| 622 | template <class _R, class _T, class _T1, class _A0> |
| 623 | inline _LIBCPP_INLINE_VISIBILITY |
| 624 | typename enable_if |
| 625 | < |
| 626 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 627 | _R |
| 628 | >::type |
| 629 | __invoke(_R (_T::*__f)(_A0), _T1 __t1, _A0& __a0) |
| 630 | { |
| 631 | return ((*__t1).*__f)(__a0); |
| 632 | } |
| 633 | |
| 634 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 635 | inline _LIBCPP_INLINE_VISIBILITY |
| 636 | typename enable_if |
| 637 | < |
| 638 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 639 | _R |
| 640 | >::type |
| 641 | __invoke(_R (_T::*__f)(_A0, _A1), _T1 __t1, _A0& __a0, _A1& __a1) |
| 642 | { |
| 643 | return ((*__t1).*__f)(__a0, __a1); |
| 644 | } |
| 645 | |
| 646 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 647 | inline _LIBCPP_INLINE_VISIBILITY |
| 648 | typename enable_if |
| 649 | < |
| 650 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 651 | _R |
| 652 | >::type |
| 653 | __invoke(_R (_T::*__f)(_A0, _A1, _A2), _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 654 | { |
| 655 | return ((*__t1).*__f)(__a0, __a1, __a2); |
| 656 | } |
| 657 | |
| 658 | template <class _R, class _T, class _T1> |
| 659 | inline _LIBCPP_INLINE_VISIBILITY |
| 660 | typename enable_if |
| 661 | < |
| 662 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 663 | _R |
| 664 | >::type |
| 665 | __invoke(_R (_T::*__f)() const, _T1 __t1) |
| 666 | { |
| 667 | return ((*__t1).*__f)(); |
| 668 | } |
| 669 | |
| 670 | template <class _R, class _T, class _T1, class _A0> |
| 671 | inline _LIBCPP_INLINE_VISIBILITY |
| 672 | typename enable_if |
| 673 | < |
| 674 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 675 | _R |
| 676 | >::type |
| 677 | __invoke(_R (_T::*__f)(_A0) const, _T1 __t1, _A0& __a0) |
| 678 | { |
| 679 | return ((*__t1).*__f)(__a0); |
| 680 | } |
| 681 | |
| 682 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 683 | inline _LIBCPP_INLINE_VISIBILITY |
| 684 | typename enable_if |
| 685 | < |
| 686 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 687 | _R |
| 688 | >::type |
| 689 | __invoke(_R (_T::*__f)(_A0, _A1) const, _T1 __t1, _A0& __a0, _A1& __a1) |
| 690 | { |
| 691 | return ((*__t1).*__f)(__a0, __a1); |
| 692 | } |
| 693 | |
| 694 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 695 | inline _LIBCPP_INLINE_VISIBILITY |
| 696 | typename enable_if |
| 697 | < |
| 698 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 699 | _R |
| 700 | >::type |
| 701 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) const, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 702 | { |
| 703 | return ((*__t1).*__f)(__a0, __a1, __a2); |
| 704 | } |
| 705 | |
| 706 | template <class _R, class _T, class _T1> |
| 707 | inline _LIBCPP_INLINE_VISIBILITY |
| 708 | typename enable_if |
| 709 | < |
| 710 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 711 | _R |
| 712 | >::type |
| 713 | __invoke(_R (_T::*__f)() volatile, _T1 __t1) |
| 714 | { |
| 715 | return ((*__t1).*__f)(); |
| 716 | } |
| 717 | |
| 718 | template <class _R, class _T, class _T1, class _A0> |
| 719 | inline _LIBCPP_INLINE_VISIBILITY |
| 720 | typename enable_if |
| 721 | < |
| 722 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 723 | _R |
| 724 | >::type |
| 725 | __invoke(_R (_T::*__f)(_A0) volatile, _T1 __t1, _A0& __a0) |
| 726 | { |
| 727 | return ((*__t1).*__f)(__a0); |
| 728 | } |
| 729 | |
| 730 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 731 | inline _LIBCPP_INLINE_VISIBILITY |
| 732 | typename enable_if |
| 733 | < |
| 734 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 735 | _R |
| 736 | >::type |
| 737 | __invoke(_R (_T::*__f)(_A0, _A1) volatile, _T1 __t1, _A0& __a0, _A1& __a1) |
| 738 | { |
| 739 | return ((*__t1).*__f)(__a0, __a1); |
| 740 | } |
| 741 | |
| 742 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 743 | inline _LIBCPP_INLINE_VISIBILITY |
| 744 | typename enable_if |
| 745 | < |
| 746 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 747 | _R |
| 748 | >::type |
| 749 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) volatile, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 750 | { |
| 751 | return ((*__t1).*__f)(__a0, __a1, __a2); |
| 752 | } |
| 753 | |
| 754 | template <class _R, class _T, class _T1> |
| 755 | inline _LIBCPP_INLINE_VISIBILITY |
| 756 | typename enable_if |
| 757 | < |
| 758 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 759 | _R |
| 760 | >::type |
| 761 | __invoke(_R (_T::*__f)() const volatile, _T1 __t1) |
| 762 | { |
| 763 | return ((*__t1).*__f)(); |
| 764 | } |
| 765 | |
| 766 | template <class _R, class _T, class _T1, class _A0> |
| 767 | inline _LIBCPP_INLINE_VISIBILITY |
| 768 | typename enable_if |
| 769 | < |
| 770 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 771 | _R |
| 772 | >::type |
| 773 | __invoke(_R (_T::*__f)(_A0) const volatile, _T1 __t1, _A0& __a0) |
| 774 | { |
| 775 | return ((*__t1).*__f)(__a0); |
| 776 | } |
| 777 | |
| 778 | template <class _R, class _T, class _T1, class _A0, class _A1> |
| 779 | inline _LIBCPP_INLINE_VISIBILITY |
| 780 | typename enable_if |
| 781 | < |
| 782 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 783 | _R |
| 784 | >::type |
| 785 | __invoke(_R (_T::*__f)(_A0, _A1) const volatile, _T1 __t1, _A0& __a0, _A1& __a1) |
| 786 | { |
| 787 | return ((*__t1).*__f)(__a0, __a1); |
| 788 | } |
| 789 | |
| 790 | template <class _R, class _T, class _T1, class _A0, class _A1, class _A2> |
| 791 | inline _LIBCPP_INLINE_VISIBILITY |
| 792 | typename enable_if |
| 793 | < |
| 794 | !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 795 | _R |
| 796 | >::type |
| 797 | __invoke(_R (_T::*__f)(_A0, _A1, _A2) const volatile, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2) |
| 798 | { |
| 799 | return ((*__t1).*__f)(__a0, __a1, __a2); |
| 800 | } |
| 801 | |
| 802 | // third bullet |
| 803 | |
| 804 | template <class _R, class _T, class _T1> |
| 805 | inline _LIBCPP_INLINE_VISIBILITY |
| 806 | typename enable_if |
| 807 | < |
| 808 | is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 809 | typename __apply_cv<_T1, _R>::type& |
| 810 | >::type |
| 811 | __invoke(_R _T::* __f, _T1& __t1) |
| 812 | { |
| 813 | return __t1.*__f; |
| 814 | } |
| 815 | |
| 816 | template <class _R, class _T> |
| 817 | inline _LIBCPP_INLINE_VISIBILITY |
| 818 | void |
| 819 | __invoke(_R _T::*) |
| 820 | { |
| 821 | } |
| 822 | |
| 823 | // template <class _D, class _R, class _T, class _T1> |
| 824 | // inline _LIBCPP_INLINE_VISIBILITY |
| 825 | // typename enable_if |
| 826 | // < |
| 827 | // is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 828 | // typename __ref_return1<_R _T::*, _T1>::type |
| 829 | // >::type |
| 830 | // __invoke(_R _T::* __f, _T1& __t1) |
| 831 | // { |
| 832 | // return __t1.*__f; |
| 833 | // } |
| 834 | |
| 835 | // forth bullet |
| 836 | |
| 837 | template <class _T1, class _R, bool> |
| 838 | struct __4th_helper |
| 839 | { |
| 840 | }; |
| 841 | |
| 842 | template <class _T1, class _R> |
| 843 | struct __4th_helper<_T1, _R, true> |
| 844 | { |
| 845 | typedef typename __apply_cv<decltype(*_STD::declval<_T1>()), _R>::type type; |
| 846 | }; |
| 847 | |
| 848 | template <class _R, class _T, class _T1> |
| 849 | inline _LIBCPP_INLINE_VISIBILITY |
| 850 | typename __4th_helper<_T1, _R, |
| 851 | !is_base_of<_T, |
| 852 | typename remove_reference<_T1>::type |
| 853 | >::value |
| 854 | >::type& |
| 855 | __invoke(_R _T::* __f, _T1& __t1) |
| 856 | { |
| 857 | return (*__t1).*__f; |
| 858 | } |
| 859 | |
| 860 | // template <class _D, class _R, class _T, class _T1> |
| 861 | // inline _LIBCPP_INLINE_VISIBILITY |
| 862 | // typename enable_if |
| 863 | // < |
| 864 | // !is_base_of<_T, typename remove_reference<_T1>::type>::value, |
| 865 | // typename __ref_return1<_R _T::*, _T1>::type |
| 866 | // >::type |
| 867 | // __invoke(_R _T::* __f, _T1 __t1) |
| 868 | // { |
| 869 | // return (*__t1).*__f; |
| 870 | // } |
| 871 | |
| 872 | // fifth bullet |
| 873 | |
| 874 | template <class _F> |
| 875 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 7c0c696 | 2010-10-03 13:59:56 +0000 | [diff] [blame] | 876 | decltype(declval<_F>()()) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 877 | __invoke(_F __f) |
| 878 | { |
| 879 | return __f(); |
| 880 | } |
| 881 | |
| 882 | template <class _F, class _A0> |
| 883 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 7c0c696 | 2010-10-03 13:59:56 +0000 | [diff] [blame] | 884 | decltype(declval<_F>()(declval<_A0&>())) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 885 | __invoke(_F __f, _A0& __a0) |
| 886 | { |
| 887 | return __f(__a0); |
| 888 | } |
| 889 | |
| 890 | template <class _F, class _A0, class _A1> |
| 891 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 7c0c696 | 2010-10-03 13:59:56 +0000 | [diff] [blame] | 892 | decltype(declval<_F>()(declval<_A0&>(), declval<_A1&>())) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 893 | __invoke(_F __f, _A0& __a0, _A1& __a1) |
| 894 | { |
| 895 | return __f(__a0, __a1); |
| 896 | } |
| 897 | |
| 898 | template <class _F, class _A0, class _A1, class _A2> |
| 899 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 7c0c696 | 2010-10-03 13:59:56 +0000 | [diff] [blame] | 900 | decltype(declval<_F>()(declval<_A0&>(), declval<_A1&>(), declval<_A2&>())) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 901 | __invoke(_F __f, _A0& __a0, _A1& __a1, _A2& __a2) |
| 902 | { |
| 903 | return __f(__a0, __a1, __a2); |
| 904 | } |
| 905 | |
| 906 | // template <class _R, class _F> |
| 907 | // inline _LIBCPP_INLINE_VISIBILITY |
| 908 | // _R |
| 909 | // __invoke(_F& __f) |
| 910 | // { |
| 911 | // return __f(); |
| 912 | // } |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 913 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 914 | // template <class _R, class _F, class _A0> |
| 915 | // inline _LIBCPP_INLINE_VISIBILITY |
| 916 | // typename enable_if |
| 917 | // < |
| 918 | // !is_member_pointer<_F>::value, |
| 919 | // _R |
| 920 | // >::type |
| 921 | // __invoke(_F& __f, _A0& __a0) |
| 922 | // { |
| 923 | // return __f(__a0); |
| 924 | // } |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 925 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 926 | // template <class _R, class _F, class _A0, class _A1> |
| 927 | // inline _LIBCPP_INLINE_VISIBILITY |
| 928 | // _R |
| 929 | // __invoke(_F& __f, _A0& __a0, _A1& __a1) |
| 930 | // { |
| 931 | // return __f(__a0, __a1); |
| 932 | // } |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 933 | // |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 934 | // template <class _R, class _F, class _A0, class _A1, class _A2> |
| 935 | // inline _LIBCPP_INLINE_VISIBILITY |
| 936 | // _R |
| 937 | // __invoke(_F& __f, _A0& __a0, _A1& __a1, _A2& __a2) |
| 938 | // { |
| 939 | // return __f(__a0, __a1, __a2); |
| 940 | // } |
| 941 | |
| 942 | template <class _Tp> |
| 943 | struct __has_type |
| 944 | { |
| 945 | private: |
| 946 | struct __two {char _; char __;}; |
| 947 | template <class _Up> static __two __test(...); |
| 948 | template <class _Up> static char __test(typename _Up::type* = 0); |
| 949 | public: |
| 950 | static const bool value = sizeof(__test<_Tp>(0)) == 1; |
| 951 | }; |
| 952 | |
| 953 | template <class _F, bool = __has_result_type<__weak_result_type<_F> >::value> |
| 954 | struct __invoke_return |
| 955 | { |
| 956 | typedef typename __weak_result_type<_F>::result_type type; |
| 957 | }; |
| 958 | |
| 959 | template <class _F> |
| 960 | struct __invoke_return<_F, false> |
| 961 | { |
| 962 | typedef decltype(__invoke(_STD::declval<_F>())) type; |
| 963 | }; |
| 964 | |
| 965 | template <class _Tp, class _A0> |
| 966 | struct __invoke_return0 |
| 967 | { |
| 968 | typedef decltype(__invoke(_STD::declval<_Tp>(), _STD::declval<_A0>())) type; |
| 969 | }; |
| 970 | |
| 971 | template <class _R, class _T, class _A0> |
| 972 | struct __invoke_return0<_R _T::*, _A0> |
| 973 | { |
| 974 | typedef typename __apply_cv<_A0, _R>::type& type; |
| 975 | }; |
| 976 | |
| 977 | template <class _R, class _T, class _A0> |
| 978 | struct __invoke_return0<_R _T::*, _A0*> |
| 979 | { |
| 980 | typedef typename __apply_cv<_A0, _R>::type& type; |
| 981 | }; |
| 982 | |
| 983 | template <class _Tp, class _A0, class _A1> |
| 984 | struct __invoke_return1 |
| 985 | { |
| 986 | typedef decltype(__invoke(_STD::declval<_Tp>(), _STD::declval<_A0>(), |
| 987 | _STD::declval<_A1>())) type; |
| 988 | }; |
| 989 | |
| 990 | template <class _Tp, class _A0, class _A1, class _A2> |
| 991 | struct __invoke_return2 |
| 992 | { |
| 993 | typedef decltype(__invoke(_STD::declval<_Tp>(), _STD::declval<_A0>(), |
| 994 | _STD::declval<_A1>(), |
| 995 | _STD::declval<_A2>())) type; |
| 996 | }; |
| 997 | |
| 998 | template <class _Tp> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 999 | class _LIBCPP_VISIBLE reference_wrapper |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1000 | : public __weak_result_type<_Tp> |
| 1001 | { |
| 1002 | public: |
| 1003 | // types |
| 1004 | typedef _Tp type; |
| 1005 | private: |
| 1006 | type* __f_; |
| 1007 | |
| 1008 | public: |
| 1009 | // construct/copy/destroy |
| 1010 | _LIBCPP_INLINE_VISIBILITY reference_wrapper(type& __f) : __f_(&__f) {} |
| 1011 | |
| 1012 | // access |
| 1013 | _LIBCPP_INLINE_VISIBILITY operator type& () const {return *__f_;} |
| 1014 | _LIBCPP_INLINE_VISIBILITY type& get() const {return *__f_;} |
| 1015 | |
| 1016 | // invoke |
| 1017 | |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 1018 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1019 | typename __invoke_return<type&>::type |
| 1020 | operator() () const |
| 1021 | { |
| 1022 | return __invoke(get()); |
| 1023 | } |
| 1024 | |
| 1025 | template <class _A0> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 1026 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1027 | typename __invoke_return0<type&, _A0>::type |
| 1028 | operator() (_A0& __a0) const |
| 1029 | { |
| 1030 | return __invoke(get(), __a0); |
| 1031 | } |
| 1032 | |
| 1033 | template <class _A0, class _A1> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 1034 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1035 | typename __invoke_return1<type&, _A0, _A1>::type |
| 1036 | operator() (_A0& __a0, _A1& __a1) const |
| 1037 | { |
| 1038 | return __invoke(get(), __a0, __a1); |
| 1039 | } |
| 1040 | |
| 1041 | template <class _A0, class _A1, class _A2> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 1042 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1043 | typename __invoke_return2<type&, _A0, _A1, _A2>::type |
| 1044 | operator() (_A0& __a0, _A1& __a1, _A2& __a2) const |
| 1045 | { |
| 1046 | return __invoke(get(), __a0, __a1, __a2); |
| 1047 | } |
| 1048 | }; |
| 1049 | |
| 1050 | template <class _Tp> struct ____is_reference_wrapper : public false_type {}; |
| 1051 | template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {}; |
| 1052 | template <class _Tp> struct __is_reference_wrapper |
| 1053 | : public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {}; |
| 1054 | |
| 1055 | template <class _Tp> |
| 1056 | inline _LIBCPP_INLINE_VISIBILITY |
| 1057 | reference_wrapper<_Tp> |
| 1058 | ref(_Tp& __t) |
| 1059 | { |
| 1060 | return reference_wrapper<_Tp>(__t); |
| 1061 | } |
| 1062 | |
| 1063 | template <class _Tp> |
| 1064 | inline _LIBCPP_INLINE_VISIBILITY |
| 1065 | reference_wrapper<_Tp> |
| 1066 | ref(reference_wrapper<_Tp> __t) |
| 1067 | { |
| 1068 | return ref(__t.get()); |
| 1069 | } |
| 1070 | |
| 1071 | template <class _Tp> |
| 1072 | inline _LIBCPP_INLINE_VISIBILITY |
| 1073 | reference_wrapper<const _Tp> |
| 1074 | cref(const _Tp& __t) |
| 1075 | { |
| 1076 | return reference_wrapper<const _Tp>(__t); |
| 1077 | } |
| 1078 | |
| 1079 | template <class _Tp> |
| 1080 | inline _LIBCPP_INLINE_VISIBILITY |
| 1081 | reference_wrapper<const _Tp> |
| 1082 | cref(reference_wrapper<_Tp> __t) |
| 1083 | { |
| 1084 | return cref(__t.get()); |
| 1085 | } |
| 1086 | |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 1087 | #endif // _LIBCPP_FUNCTIONAL_BASE_03 |