1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 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 __lx; char __lxx;}; 23 static __two __test(...); 24 template <class _Ap, class _Rp> 25 static unary_function<_Ap, _Rp> 26 __test(const volatile unary_function<_Ap, _Rp>*); 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 __lx; char __lxx;}; 37 static __two __test(...); 38 template <class _A1, class _A2, class _Rp> 39 static binary_function<_A1, _A2, _Rp> 40 __test(const volatile binary_function<_A1, _A2, _Rp>*); 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 _Rp> 92 struct __weak_result_type<_Rp ()> 93 { 94 typedef _Rp result_type; 95 }; 96 97 template <class _Rp> 98 struct __weak_result_type<_Rp (&)()> 99 { 100 typedef _Rp result_type; 101 }; 102 103 template <class _Rp> 104 struct __weak_result_type<_Rp (*)()> 105 { 106 typedef _Rp result_type; 107 }; 108 109 // 1 argument case 110 111 template <class _Rp, class _A1> 112 struct __weak_result_type<_Rp (_A1)> 113 : public unary_function<_A1, _Rp> 114 { 115 }; 116 117 template <class _Rp, class _A1> 118 struct __weak_result_type<_Rp (&)(_A1)> 119 : public unary_function<_A1, _Rp> 120 { 121 }; 122 123 template <class _Rp, class _A1> 124 struct __weak_result_type<_Rp (*)(_A1)> 125 : public unary_function<_A1, _Rp> 126 { 127 }; 128 129 template <class _Rp, class _Cp> 130 struct __weak_result_type<_Rp (_Cp::*)()> 131 : public unary_function<_Cp*, _Rp> 132 { 133 }; 134 135 template <class _Rp, class _Cp> 136 struct __weak_result_type<_Rp (_Cp::*)() const> 137 : public unary_function<const _Cp*, _Rp> 138 { 139 }; 140 141 template <class _Rp, class _Cp> 142 struct __weak_result_type<_Rp (_Cp::*)() volatile> 143 : public unary_function<volatile _Cp*, _Rp> 144 { 145 }; 146 147 template <class _Rp, class _Cp> 148 struct __weak_result_type<_Rp (_Cp::*)() const volatile> 149 : public unary_function<const volatile _Cp*, _Rp> 150 { 151 }; 152 153 // 2 argument case 154 155 template <class _Rp, class _A1, class _A2> 156 struct __weak_result_type<_Rp (_A1, _A2)> 157 : public binary_function<_A1, _A2, _Rp> 158 { 159 }; 160 161 template <class _Rp, class _A1, class _A2> 162 struct __weak_result_type<_Rp (*)(_A1, _A2)> 163 : public binary_function<_A1, _A2, _Rp> 164 { 165 }; 166 167 template <class _Rp, class _A1, class _A2> 168 struct __weak_result_type<_Rp (&)(_A1, _A2)> 169 : public binary_function<_A1, _A2, _Rp> 170 { 171 }; 172 173 template <class _Rp, class _Cp, class _A1> 174 struct __weak_result_type<_Rp (_Cp::*)(_A1)> 175 : public binary_function<_Cp*, _A1, _Rp> 176 { 177 }; 178 179 template <class _Rp, class _Cp, class _A1> 180 struct __weak_result_type<_Rp (_Cp::*)(_A1) const> 181 : public binary_function<const _Cp*, _A1, _Rp> 182 { 183 }; 184 185 template <class _Rp, class _Cp, class _A1> 186 struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile> 187 : public binary_function<volatile _Cp*, _A1, _Rp> 188 { 189 }; 190 191 template <class _Rp, class _Cp, class _A1> 192 struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile> 193 : public binary_function<const volatile _Cp*, _A1, _Rp> 194 { 195 }; 196 197 // 3 or more arguments 198 199 template <class _Rp, class _A1, class _A2, class _A3> 200 struct __weak_result_type<_Rp (_A1, _A2, _A3)> 201 { 202 typedef _Rp result_type; 203 }; 204 205 template <class _Rp, class _A1, class _A2, class _A3> 206 struct __weak_result_type<_Rp (&)(_A1, _A2, _A3)> 207 { 208 typedef _Rp result_type; 209 }; 210 211 template <class _Rp, class _A1, class _A2, class _A3> 212 struct __weak_result_type<_Rp (*)(_A1, _A2, _A3)> 213 { 214 typedef _Rp result_type; 215 }; 216 217 template <class _Rp, class _Cp, class _A1, class _A2> 218 struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2)> 219 { 220 typedef _Rp result_type; 221 }; 222 223 template <class _Rp, class _Cp, class _A1, class _A2> 224 struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) const> 225 { 226 typedef _Rp result_type; 227 }; 228 229 template <class _Rp, class _Cp, class _A1, class _A2> 230 struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) volatile> 231 { 232 typedef _Rp result_type; 233 }; 234 235 // __invoke 236 237 // __ref_return0 238 // 239 // template <class _Tp, bool _HasResultType> 240 // struct ________ref_return0 // _HasResultType is true 241 // { 242 // typedef typename _Tp::result_type type; 243 // }; 244 // 245 // template <class _Tp> 246 // struct ________ref_return0<_Tp, false> 247 // { 248 // typedef void type; 249 // }; 250 // 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 // }; 256 // 257 // template <class _Tp, bool _HasResultType> 258 // struct ______ref_return0 // _HasResultType is true 259 // { 260 // typedef typename __callable_type<_Tp>::result_type type; 261 // }; 262 // 263 // template <class _Tp> 264 // struct ______ref_return0<_Tp, false> // pointer to member data 265 // { 266 // typedef void type; 267 // }; 268 // 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 // }; 275 // 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 // }; 282 // 283 // __ref_return1 284 // 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 // }; 290 // 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 // }; 296 // 297 // template <class _Tp, class _A0, bool> 298 // struct __ref_return1_member_data1; 299 // 300 // template <class _Rp, class _Cp, class _A0> 301 // struct __ref_return1_member_data1<_Rp _Cp::*, _A0, true> 302 // { 303 // typedef typename __apply_cv<_A0, _Rp>::type& type; 304 // }; 305 // 306 // template <class _Rp, class _Cp, class _A0> 307 // struct __ref_return1_member_data1<_Rp _Cp::*, _A0, false> 308 // { 309 // static _A0 __a; 310 // typedef typename __apply_cv<decltype(*__a), _Rp>::type& type; 311 // }; 312 // 313 // template <class _Tp, class _A0> 314 // struct __ref_return1_member_data; 315 // 316 // template <class _Rp, class _Cp, class _A0> 317 // struct __ref_return1_member_data<_Rp _Cp::*, _A0> 318 // : public __ref_return1_member_data1<_Rp _Cp::*, _A0, 319 // is_same<typename remove_cv<_Cp>::type, 320 // typename remove_cv<typename remove_reference<_A0>::type>::type>::value> 321 // { 322 // }; 323 // 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 // }; 329 // 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 // }; 336 // 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 // }; 343 // 344 // __ref_return2 345 // 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 // }; 351 // 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 // }; 357 // 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 // }; 364 // 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 // }; 371 // 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 // }; 378 // 379 // __ref_return3 380 // 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 // }; 386 // 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 // }; 392 // 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 // }; 399 // 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 // }; 406 // 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 // }; 413 414 // first bullet 415 416 template <class _Rp, class _Tp, class _T1> 417 inline _LIBCPP_INLINE_VISIBILITY 418 typename enable_if 419 < 420 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 421 _Rp 422 >::type 423 __invoke(_Rp (_Tp::*__f)(), _T1& __t1) 424 { 425 return (__t1.*__f)(); 426 } 427 428 template <class _Rp, class _Tp, class _T1, class _A0> 429 inline _LIBCPP_INLINE_VISIBILITY 430 typename enable_if 431 < 432 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 433 _Rp 434 >::type 435 __invoke(_Rp (_Tp::*__f)(_A0), _T1& __t1, _A0& __a0) 436 { 437 return (__t1.*__f)(__a0); 438 } 439 440 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 441 inline _LIBCPP_INLINE_VISIBILITY 442 typename enable_if 443 < 444 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 445 _Rp 446 >::type 447 __invoke(_Rp (_Tp::*__f)(_A0, _A1), _T1& __t1, _A0& __a0, _A1& __a1) 448 { 449 return (__t1.*__f)(__a0, __a1); 450 } 451 452 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 453 inline _LIBCPP_INLINE_VISIBILITY 454 typename enable_if 455 < 456 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 457 _Rp 458 >::type 459 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 465 inline _LIBCPP_INLINE_VISIBILITY 466 typename enable_if 467 < 468 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 469 _Rp 470 >::type 471 __invoke(_Rp (_Tp::*__f)() const, _T1& __t1) 472 { 473 return (__t1.*__f)(); 474 } 475 476 template <class _Rp, class _Tp, class _T1, class _A0> 477 inline _LIBCPP_INLINE_VISIBILITY 478 typename enable_if 479 < 480 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 481 _Rp 482 >::type 483 __invoke(_Rp (_Tp::*__f)(_A0) const, _T1& __t1, _A0& __a0) 484 { 485 return (__t1.*__f)(__a0); 486 } 487 488 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 489 inline _LIBCPP_INLINE_VISIBILITY 490 typename enable_if 491 < 492 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 493 _Rp 494 >::type 495 __invoke(_Rp (_Tp::*__f)(_A0, _A1) const, _T1& __t1, _A0& __a0, _A1& __a1) 496 { 497 return (__t1.*__f)(__a0, __a1); 498 } 499 500 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 501 inline _LIBCPP_INLINE_VISIBILITY 502 typename enable_if 503 < 504 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 505 _Rp 506 >::type 507 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 513 inline _LIBCPP_INLINE_VISIBILITY 514 typename enable_if 515 < 516 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 517 _Rp 518 >::type 519 __invoke(_Rp (_Tp::*__f)() volatile, _T1& __t1) 520 { 521 return (__t1.*__f)(); 522 } 523 524 template <class _Rp, class _Tp, class _T1, class _A0> 525 inline _LIBCPP_INLINE_VISIBILITY 526 typename enable_if 527 < 528 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 529 _Rp 530 >::type 531 __invoke(_Rp (_Tp::*__f)(_A0) volatile, _T1& __t1, _A0& __a0) 532 { 533 return (__t1.*__f)(__a0); 534 } 535 536 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 537 inline _LIBCPP_INLINE_VISIBILITY 538 typename enable_if 539 < 540 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 541 _Rp 542 >::type 543 __invoke(_Rp (_Tp::*__f)(_A0, _A1) volatile, _T1& __t1, _A0& __a0, _A1& __a1) 544 { 545 return (__t1.*__f)(__a0, __a1); 546 } 547 548 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 549 inline _LIBCPP_INLINE_VISIBILITY 550 typename enable_if 551 < 552 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 553 _Rp 554 >::type 555 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 561 inline _LIBCPP_INLINE_VISIBILITY 562 typename enable_if 563 < 564 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 565 _Rp 566 >::type 567 __invoke(_Rp (_Tp::*__f)() const volatile, _T1& __t1) 568 { 569 return (__t1.*__f)(); 570 } 571 572 template <class _Rp, class _Tp, class _T1, class _A0> 573 inline _LIBCPP_INLINE_VISIBILITY 574 typename enable_if 575 < 576 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 577 _Rp 578 >::type 579 __invoke(_Rp (_Tp::*__f)(_A0) const volatile, _T1& __t1, _A0& __a0) 580 { 581 return (__t1.*__f)(__a0); 582 } 583 584 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 585 inline _LIBCPP_INLINE_VISIBILITY 586 typename enable_if 587 < 588 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 589 _Rp 590 >::type 591 __invoke(_Rp (_Tp::*__f)(_A0, _A1) const volatile, _T1& __t1, _A0& __a0, _A1& __a1) 592 { 593 return (__t1.*__f)(__a0, __a1); 594 } 595 596 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 597 inline _LIBCPP_INLINE_VISIBILITY 598 typename enable_if 599 < 600 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 601 _Rp 602 >::type 603 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 611 inline _LIBCPP_INLINE_VISIBILITY 612 typename enable_if 613 < 614 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 615 _Rp 616 >::type 617 __invoke(_Rp (_Tp::*__f)(), _T1 __t1) 618 { 619 return ((*__t1).*__f)(); 620 } 621 622 template <class _Rp, class _Tp, class _T1, class _A0> 623 inline _LIBCPP_INLINE_VISIBILITY 624 typename enable_if 625 < 626 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 627 _Rp 628 >::type 629 __invoke(_Rp (_Tp::*__f)(_A0), _T1 __t1, _A0& __a0) 630 { 631 return ((*__t1).*__f)(__a0); 632 } 633 634 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 635 inline _LIBCPP_INLINE_VISIBILITY 636 typename enable_if 637 < 638 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 639 _Rp 640 >::type 641 __invoke(_Rp (_Tp::*__f)(_A0, _A1), _T1 __t1, _A0& __a0, _A1& __a1) 642 { 643 return ((*__t1).*__f)(__a0, __a1); 644 } 645 646 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 647 inline _LIBCPP_INLINE_VISIBILITY 648 typename enable_if 649 < 650 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 651 _Rp 652 >::type 653 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 659 inline _LIBCPP_INLINE_VISIBILITY 660 typename enable_if 661 < 662 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 663 _Rp 664 >::type 665 __invoke(_Rp (_Tp::*__f)() const, _T1 __t1) 666 { 667 return ((*__t1).*__f)(); 668 } 669 670 template <class _Rp, class _Tp, class _T1, class _A0> 671 inline _LIBCPP_INLINE_VISIBILITY 672 typename enable_if 673 < 674 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 675 _Rp 676 >::type 677 __invoke(_Rp (_Tp::*__f)(_A0) const, _T1 __t1, _A0& __a0) 678 { 679 return ((*__t1).*__f)(__a0); 680 } 681 682 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 683 inline _LIBCPP_INLINE_VISIBILITY 684 typename enable_if 685 < 686 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 687 _Rp 688 >::type 689 __invoke(_Rp (_Tp::*__f)(_A0, _A1) const, _T1 __t1, _A0& __a0, _A1& __a1) 690 { 691 return ((*__t1).*__f)(__a0, __a1); 692 } 693 694 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 695 inline _LIBCPP_INLINE_VISIBILITY 696 typename enable_if 697 < 698 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 699 _Rp 700 >::type 701 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 707 inline _LIBCPP_INLINE_VISIBILITY 708 typename enable_if 709 < 710 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 711 _Rp 712 >::type 713 __invoke(_Rp (_Tp::*__f)() volatile, _T1 __t1) 714 { 715 return ((*__t1).*__f)(); 716 } 717 718 template <class _Rp, class _Tp, class _T1, class _A0> 719 inline _LIBCPP_INLINE_VISIBILITY 720 typename enable_if 721 < 722 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 723 _Rp 724 >::type 725 __invoke(_Rp (_Tp::*__f)(_A0) volatile, _T1 __t1, _A0& __a0) 726 { 727 return ((*__t1).*__f)(__a0); 728 } 729 730 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 731 inline _LIBCPP_INLINE_VISIBILITY 732 typename enable_if 733 < 734 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 735 _Rp 736 >::type 737 __invoke(_Rp (_Tp::*__f)(_A0, _A1) volatile, _T1 __t1, _A0& __a0, _A1& __a1) 738 { 739 return ((*__t1).*__f)(__a0, __a1); 740 } 741 742 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 743 inline _LIBCPP_INLINE_VISIBILITY 744 typename enable_if 745 < 746 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 747 _Rp 748 >::type 749 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 755 inline _LIBCPP_INLINE_VISIBILITY 756 typename enable_if 757 < 758 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 759 _Rp 760 >::type 761 __invoke(_Rp (_Tp::*__f)() const volatile, _T1 __t1) 762 { 763 return ((*__t1).*__f)(); 764 } 765 766 template <class _Rp, class _Tp, class _T1, class _A0> 767 inline _LIBCPP_INLINE_VISIBILITY 768 typename enable_if 769 < 770 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 771 _Rp 772 >::type 773 __invoke(_Rp (_Tp::*__f)(_A0) const volatile, _T1 __t1, _A0& __a0) 774 { 775 return ((*__t1).*__f)(__a0); 776 } 777 778 template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 779 inline _LIBCPP_INLINE_VISIBILITY 780 typename enable_if 781 < 782 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 783 _Rp 784 >::type 785 __invoke(_Rp (_Tp::*__f)(_A0, _A1) const volatile, _T1 __t1, _A0& __a0, _A1& __a1) 786 { 787 return ((*__t1).*__f)(__a0, __a1); 788 } 789 790 template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 791 inline _LIBCPP_INLINE_VISIBILITY 792 typename enable_if 793 < 794 !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 795 _Rp 796 >::type 797 __invoke(_Rp (_Tp::*__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 _Rp, class _Tp, class _T1> 805 inline _LIBCPP_INLINE_VISIBILITY 806 typename enable_if 807 < 808 is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 809 typename __apply_cv<_T1, _Rp>::type& 810 >::type 811 __invoke(_Rp _Tp::* __f, _T1& __t1) 812 { 813 return __t1.*__f; 814 } 815 816 template <class _Rp, class _Tp> 817 inline _LIBCPP_INLINE_VISIBILITY 818 void 819 __invoke(_Rp _Tp::*) 820 { 821 } 822 823 // template <class _Dp, class _Rp, class _Tp, class _T1> 824 // inline _LIBCPP_INLINE_VISIBILITY 825 // typename enable_if 826 // < 827 // is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 828 // typename __ref_return1<_Rp _Tp::*, _T1>::type 829 // >::type 830 // __invoke(_Rp _Tp::* __f, _T1& __t1) 831 // { 832 // return __t1.*__f; 833 // } 834 835 // forth bullet 836 837 template <class _T1, class _Rp, bool> 838 struct __4th_helper 839 { 840 }; 841 842 template <class _T1, class _Rp> 843 struct __4th_helper<_T1, _Rp, true> 844 { 845 typedef typename __apply_cv<decltype(*_VSTD::declval<_T1>()), _Rp>::type type; 846 }; 847 848 template <class _Rp, class _Tp, class _T1> 849 inline _LIBCPP_INLINE_VISIBILITY 850 typename __4th_helper<_T1, _Rp, 851 !is_base_of<_Tp, 852 typename remove_reference<_T1>::type 853 >::value 854 >::type& 855 __invoke(_Rp _Tp::* __f, _T1& __t1) 856 { 857 return (*__t1).*__f; 858 } 859 860 // template <class _Dp, class _Rp, class _Tp, class _T1> 861 // inline _LIBCPP_INLINE_VISIBILITY 862 // typename enable_if 863 // < 864 // !is_base_of<_Tp, typename remove_reference<_T1>::type>::value, 865 // typename __ref_return1<_Rp _Tp::*, _T1>::type 866 // >::type 867 // __invoke(_Rp _Tp::* __f, _T1 __t1) 868 // { 869 // return (*__t1).*__f; 870 // } 871 872 // fifth bullet 873 874 template <class _Fp> 875 inline _LIBCPP_INLINE_VISIBILITY 876 decltype(declval<_Fp>()()) 877 __invoke(_Fp __f) 878 { 879 return __f(); 880 } 881 882 template <class _Fp, class _A0> 883 inline _LIBCPP_INLINE_VISIBILITY 884 decltype(declval<_Fp>()(declval<_A0&>())) 885 __invoke(_Fp __f, _A0& __a0) 886 { 887 return __f(__a0); 888 } 889 890 template <class _Fp, class _A0, class _A1> 891 inline _LIBCPP_INLINE_VISIBILITY 892 decltype(declval<_Fp>()(declval<_A0&>(), declval<_A1&>())) 893 __invoke(_Fp __f, _A0& __a0, _A1& __a1) 894 { 895 return __f(__a0, __a1); 896 } 897 898 template <class _Fp, class _A0, class _A1, class _A2> 899 inline _LIBCPP_INLINE_VISIBILITY 900 decltype(declval<_Fp>()(declval<_A0&>(), declval<_A1&>(), declval<_A2&>())) 901 __invoke(_Fp __f, _A0& __a0, _A1& __a1, _A2& __a2) 902 { 903 return __f(__a0, __a1, __a2); 904 } 905 906 // template <class _Rp, class _Fp> 907 // inline _LIBCPP_INLINE_VISIBILITY 908 // _Rp 909 // __invoke(_Fp& __f) 910 // { 911 // return __f(); 912 // } 913 // 914 // template <class _Rp, class _Fp, class _A0> 915 // inline _LIBCPP_INLINE_VISIBILITY 916 // typename enable_if 917 // < 918 // !is_member_pointer<_Fp>::value, 919 // _Rp 920 // >::type 921 // __invoke(_Fp& __f, _A0& __a0) 922 // { 923 // return __f(__a0); 924 // } 925 // 926 // template <class _Rp, class _Fp, class _A0, class _A1> 927 // inline _LIBCPP_INLINE_VISIBILITY 928 // _Rp 929 // __invoke(_Fp& __f, _A0& __a0, _A1& __a1) 930 // { 931 // return __f(__a0, __a1); 932 // } 933 // 934 // template <class _Rp, class _Fp, class _A0, class _A1, class _A2> 935 // inline _LIBCPP_INLINE_VISIBILITY 936 // _Rp 937 // __invoke(_Fp& __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 __lx; char __lxx;}; 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 _Fp, bool = __has_result_type<__weak_result_type<_Fp> >::value> 954 struct __invoke_return 955 { 956 typedef typename __weak_result_type<_Fp>::result_type type; 957 }; 958 959 template <class _Fp> 960 struct __invoke_return<_Fp, false> 961 { 962 typedef decltype(__invoke(_VSTD::declval<_Fp>())) type; 963 }; 964 965 template <class _Tp, class _A0> 966 struct __invoke_return0 967 { 968 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>())) type; 969 }; 970 971 template <class _Rp, class _Tp, class _A0> 972 struct __invoke_return0<_Rp _Tp::*, _A0> 973 { 974 typedef typename __apply_cv<_A0, _Rp>::type& type; 975 }; 976 977 template <class _Rp, class _Tp, class _A0> 978 struct __invoke_return0<_Rp _Tp::*, _A0*> 979 { 980 typedef typename __apply_cv<_A0, _Rp>::type& type; 981 }; 982 983 template <class _Tp, class _A0, class _A1> 984 struct __invoke_return1 985 { 986 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(), 987 _VSTD::declval<_A1>())) type; 988 }; 989 990 template <class _Tp, class _A0, class _A1, class _A2> 991 struct __invoke_return2 992 { 993 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(), 994 _VSTD::declval<_A1>(), 995 _VSTD::declval<_A2>())) type; 996 }; 997 998 template <class _Tp> 999 class _LIBCPP_VISIBLE reference_wrapper 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 1018 _LIBCPP_INLINE_VISIBILITY 1019 typename __invoke_return<type&>::type 1020 operator() () const 1021 { 1022 return __invoke(get()); 1023 } 1024 1025 template <class _A0> 1026 _LIBCPP_INLINE_VISIBILITY 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> 1034 _LIBCPP_INLINE_VISIBILITY 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> 1042 _LIBCPP_INLINE_VISIBILITY 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 1087 #endif // _LIBCPP_FUNCTIONAL_BASE_03 1088
