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 18template <class _Tp> 19struct __derives_from_unary_function 20{ 21private: 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>*); 27public: 28 static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; 29 typedef decltype(__test((_Tp*)0)) type; 30}; 31 32template <class _Tp> 33struct __derives_from_binary_function 34{ 35private: 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>*); 41public: 42 static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; 43 typedef decltype(__test((_Tp*)0)) type; 44}; 45 46template <class _Tp, bool = __derives_from_unary_function<_Tp>::value> 47struct __maybe_derive_from_unary_function // bool is true 48 : public __derives_from_unary_function<_Tp>::type 49{ 50}; 51 52template <class _Tp> 53struct __maybe_derive_from_unary_function<_Tp, false> 54{ 55}; 56 57template <class _Tp, bool = __derives_from_binary_function<_Tp>::value> 58struct __maybe_derive_from_binary_function // bool is true 59 : public __derives_from_binary_function<_Tp>::type 60{ 61}; 62 63template <class _Tp> 64struct __maybe_derive_from_binary_function<_Tp, false> 65{ 66}; 67 68template <class _Tp, bool = __has_result_type<_Tp>::value> 69struct __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 76template <class _Tp> 77struct __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 83template <class _Tp> 84struct __weak_result_type 85 : public __weak_result_type_imp<typename remove_reference<_Tp>::type> 86{ 87}; 88 89// 0 argument case 90 91template <class _Rp> 92struct __weak_result_type<_Rp ()> 93{ 94 typedef _Rp result_type; 95}; 96 97template <class _Rp> 98struct __weak_result_type<_Rp (&)()> 99{ 100 typedef _Rp result_type; 101}; 102 103template <class _Rp> 104struct __weak_result_type<_Rp (*)()> 105{ 106 typedef _Rp result_type; 107}; 108 109// 1 argument case 110 111template <class _Rp, class _A1> 112struct __weak_result_type<_Rp (_A1)> 113 : public unary_function<_A1, _Rp> 114{ 115}; 116 117template <class _Rp, class _A1> 118struct __weak_result_type<_Rp (&)(_A1)> 119 : public unary_function<_A1, _Rp> 120{ 121}; 122 123template <class _Rp, class _A1> 124struct __weak_result_type<_Rp (*)(_A1)> 125 : public unary_function<_A1, _Rp> 126{ 127}; 128 129template <class _Rp, class _Cp> 130struct __weak_result_type<_Rp (_Cp::*)()> 131 : public unary_function<_Cp*, _Rp> 132{ 133}; 134 135template <class _Rp, class _Cp> 136struct __weak_result_type<_Rp (_Cp::*)() const> 137 : public unary_function<const _Cp*, _Rp> 138{ 139}; 140 141template <class _Rp, class _Cp> 142struct __weak_result_type<_Rp (_Cp::*)() volatile> 143 : public unary_function<volatile _Cp*, _Rp> 144{ 145}; 146 147template <class _Rp, class _Cp> 148struct __weak_result_type<_Rp (_Cp::*)() const volatile> 149 : public unary_function<const volatile _Cp*, _Rp> 150{ 151}; 152 153// 2 argument case 154 155template <class _Rp, class _A1, class _A2> 156struct __weak_result_type<_Rp (_A1, _A2)> 157 : public binary_function<_A1, _A2, _Rp> 158{ 159}; 160 161template <class _Rp, class _A1, class _A2> 162struct __weak_result_type<_Rp (*)(_A1, _A2)> 163 : public binary_function<_A1, _A2, _Rp> 164{ 165}; 166 167template <class _Rp, class _A1, class _A2> 168struct __weak_result_type<_Rp (&)(_A1, _A2)> 169 : public binary_function<_A1, _A2, _Rp> 170{ 171}; 172 173template <class _Rp, class _Cp, class _A1> 174struct __weak_result_type<_Rp (_Cp::*)(_A1)> 175 : public binary_function<_Cp*, _A1, _Rp> 176{ 177}; 178 179template <class _Rp, class _Cp, class _A1> 180struct __weak_result_type<_Rp (_Cp::*)(_A1) const> 181 : public binary_function<const _Cp*, _A1, _Rp> 182{ 183}; 184 185template <class _Rp, class _Cp, class _A1> 186struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile> 187 : public binary_function<volatile _Cp*, _A1, _Rp> 188{ 189}; 190 191template <class _Rp, class _Cp, class _A1> 192struct __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 199template <class _Rp, class _A1, class _A2, class _A3> 200struct __weak_result_type<_Rp (_A1, _A2, _A3)> 201{ 202 typedef _Rp result_type; 203}; 204 205template <class _Rp, class _A1, class _A2, class _A3> 206struct __weak_result_type<_Rp (&)(_A1, _A2, _A3)> 207{ 208 typedef _Rp result_type; 209}; 210 211template <class _Rp, class _A1, class _A2, class _A3> 212struct __weak_result_type<_Rp (*)(_A1, _A2, _A3)> 213{ 214 typedef _Rp result_type; 215}; 216 217template <class _Rp, class _Cp, class _A1, class _A2> 218struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2)> 219{ 220 typedef _Rp result_type; 221}; 222 223template <class _Rp, class _Cp, class _A1, class _A2> 224struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) const> 225{ 226 typedef _Rp result_type; 227}; 228 229template <class _Rp, class _Cp, class _A1, class _A2> 230struct __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 416template <class _Rp, class _Tp, class _T1> 417inline _LIBCPP_INLINE_VISIBILITY 418typename 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 428template <class _Rp, class _Tp, class _T1, class _A0> 429inline _LIBCPP_INLINE_VISIBILITY 430typename 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 440template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 441inline _LIBCPP_INLINE_VISIBILITY 442typename 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 452template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 453inline _LIBCPP_INLINE_VISIBILITY 454typename 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 464template <class _Rp, class _Tp, class _T1> 465inline _LIBCPP_INLINE_VISIBILITY 466typename 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 476template <class _Rp, class _Tp, class _T1, class _A0> 477inline _LIBCPP_INLINE_VISIBILITY 478typename 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 488template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 489inline _LIBCPP_INLINE_VISIBILITY 490typename 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 500template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 501inline _LIBCPP_INLINE_VISIBILITY 502typename 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 512template <class _Rp, class _Tp, class _T1> 513inline _LIBCPP_INLINE_VISIBILITY 514typename 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 524template <class _Rp, class _Tp, class _T1, class _A0> 525inline _LIBCPP_INLINE_VISIBILITY 526typename 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 536template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 537inline _LIBCPP_INLINE_VISIBILITY 538typename 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 548template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 549inline _LIBCPP_INLINE_VISIBILITY 550typename 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 560template <class _Rp, class _Tp, class _T1> 561inline _LIBCPP_INLINE_VISIBILITY 562typename 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 572template <class _Rp, class _Tp, class _T1, class _A0> 573inline _LIBCPP_INLINE_VISIBILITY 574typename 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 584template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 585inline _LIBCPP_INLINE_VISIBILITY 586typename 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 596template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 597inline _LIBCPP_INLINE_VISIBILITY 598typename 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 610template <class _Rp, class _Tp, class _T1> 611inline _LIBCPP_INLINE_VISIBILITY 612typename 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 622template <class _Rp, class _Tp, class _T1, class _A0> 623inline _LIBCPP_INLINE_VISIBILITY 624typename 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 634template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 635inline _LIBCPP_INLINE_VISIBILITY 636typename 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 646template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 647inline _LIBCPP_INLINE_VISIBILITY 648typename 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 658template <class _Rp, class _Tp, class _T1> 659inline _LIBCPP_INLINE_VISIBILITY 660typename 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 670template <class _Rp, class _Tp, class _T1, class _A0> 671inline _LIBCPP_INLINE_VISIBILITY 672typename 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 682template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 683inline _LIBCPP_INLINE_VISIBILITY 684typename 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 694template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 695inline _LIBCPP_INLINE_VISIBILITY 696typename 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 706template <class _Rp, class _Tp, class _T1> 707inline _LIBCPP_INLINE_VISIBILITY 708typename 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 718template <class _Rp, class _Tp, class _T1, class _A0> 719inline _LIBCPP_INLINE_VISIBILITY 720typename 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 730template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 731inline _LIBCPP_INLINE_VISIBILITY 732typename 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 742template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 743inline _LIBCPP_INLINE_VISIBILITY 744typename 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 754template <class _Rp, class _Tp, class _T1> 755inline _LIBCPP_INLINE_VISIBILITY 756typename 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 766template <class _Rp, class _Tp, class _T1, class _A0> 767inline _LIBCPP_INLINE_VISIBILITY 768typename 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 778template <class _Rp, class _Tp, class _T1, class _A0, class _A1> 779inline _LIBCPP_INLINE_VISIBILITY 780typename 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 790template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2> 791inline _LIBCPP_INLINE_VISIBILITY 792typename 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 804template <class _Rp, class _Tp, class _T1> 805inline _LIBCPP_INLINE_VISIBILITY 806typename 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 816template <class _Rp, class _Tp> 817inline _LIBCPP_INLINE_VISIBILITY 818void 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 837template <class _T1, class _Rp, bool> 838struct __4th_helper 839{ 840}; 841 842template <class _T1, class _Rp> 843struct __4th_helper<_T1, _Rp, true> 844{ 845 typedef typename __apply_cv<decltype(*_VSTD::declval<_T1>()), _Rp>::type type; 846}; 847 848template <class _Rp, class _Tp, class _T1> 849inline _LIBCPP_INLINE_VISIBILITY 850typename __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 874template <class _Fp> 875inline _LIBCPP_INLINE_VISIBILITY 876decltype(declval<_Fp>()()) 877__invoke(_Fp __f) 878{ 879 return __f(); 880} 881 882template <class _Fp, class _A0> 883inline _LIBCPP_INLINE_VISIBILITY 884decltype(declval<_Fp>()(declval<_A0&>())) 885__invoke(_Fp __f, _A0& __a0) 886{ 887 return __f(__a0); 888} 889 890template <class _Fp, class _A0, class _A1> 891inline _LIBCPP_INLINE_VISIBILITY 892decltype(declval<_Fp>()(declval<_A0&>(), declval<_A1&>())) 893__invoke(_Fp __f, _A0& __a0, _A1& __a1) 894{ 895 return __f(__a0, __a1); 896} 897 898template <class _Fp, class _A0, class _A1, class _A2> 899inline _LIBCPP_INLINE_VISIBILITY 900decltype(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 942template <class _Tp> 943struct __has_type 944{ 945private: 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); 949public: 950 static const bool value = sizeof(__test<_Tp>(0)) == 1; 951}; 952 953template <class _Fp, bool = __has_result_type<__weak_result_type<_Fp> >::value> 954struct __invoke_return 955{ 956 typedef typename __weak_result_type<_Fp>::result_type type; 957}; 958 959template <class _Fp> 960struct __invoke_return<_Fp, false> 961{ 962 typedef decltype(__invoke(_VSTD::declval<_Fp>())) type; 963}; 964 965template <class _Tp, class _A0> 966struct __invoke_return0 967{ 968 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>())) type; 969}; 970 971template <class _Rp, class _Tp, class _A0> 972struct __invoke_return0<_Rp _Tp::*, _A0> 973{ 974 typedef typename __apply_cv<_A0, _Rp>::type& type; 975}; 976 977template <class _Rp, class _Tp, class _A0> 978struct __invoke_return0<_Rp _Tp::*, _A0*> 979{ 980 typedef typename __apply_cv<_A0, _Rp>::type& type; 981}; 982 983template <class _Tp, class _A0, class _A1> 984struct __invoke_return1 985{ 986 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(), 987 _VSTD::declval<_A1>())) type; 988}; 989 990template <class _Tp, class _A0, class _A1, class _A2> 991struct __invoke_return2 992{ 993 typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(), 994 _VSTD::declval<_A1>(), 995 _VSTD::declval<_A2>())) type; 996}; 997 998template <class _Tp> 999class _LIBCPP_VISIBLE reference_wrapper 1000 : public __weak_result_type<_Tp> 1001{ 1002public: 1003 // types 1004 typedef _Tp type; 1005private: 1006 type* __f_; 1007 1008public: 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 1050template <class _Tp> struct ____is_reference_wrapper : public false_type {}; 1051template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {}; 1052template <class _Tp> struct __is_reference_wrapper 1053 : public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {}; 1054 1055template <class _Tp> 1056inline _LIBCPP_INLINE_VISIBILITY 1057reference_wrapper<_Tp> 1058ref(_Tp& __t) 1059{ 1060 return reference_wrapper<_Tp>(__t); 1061} 1062 1063template <class _Tp> 1064inline _LIBCPP_INLINE_VISIBILITY 1065reference_wrapper<_Tp> 1066ref(reference_wrapper<_Tp> __t) 1067{ 1068 return ref(__t.get()); 1069} 1070 1071template <class _Tp> 1072inline _LIBCPP_INLINE_VISIBILITY 1073reference_wrapper<const _Tp> 1074cref(const _Tp& __t) 1075{ 1076 return reference_wrapper<const _Tp>(__t); 1077} 1078 1079template <class _Tp> 1080inline _LIBCPP_INLINE_VISIBILITY 1081reference_wrapper<const _Tp> 1082cref(reference_wrapper<_Tp> __t) 1083{ 1084 return cref(__t.get()); 1085} 1086 1087#endif // _LIBCPP_FUNCTIONAL_BASE_03 1088