1// -*- C++ -*- 2//===------------------------ functional ----------------------------------===// 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 12#define _LIBCPP_FUNCTIONAL 13 14/* 15 functional synopsis 16 17namespace std 18{ 19 20template <class Arg, class Result> 21struct unary_function 22{ 23 typedef Arg argument_type; 24 typedef Result result_type; 25}; 26 27template <class Arg1, class Arg2, class Result> 28struct binary_function 29{ 30 typedef Arg1 first_argument_type; 31 typedef Arg2 second_argument_type; 32 typedef Result result_type; 33}; 34 35template <class T> 36class reference_wrapper 37 : public unary_function<T1, R> // if wrapping a unary functor 38 : public binary_function<T1, T2, R> // if wraping a binary functor 39{ 40public: 41 // types 42 typedef T type; 43 typedef see below result_type; // Not always defined 44 45 // construct/copy/destroy 46 reference_wrapper(T&) noexcept; 47 reference_wrapper(T&&) = delete; // do not bind to temps 48 reference_wrapper(const reference_wrapper<T>& x) noexcept; 49 50 // assignment 51 reference_wrapper& operator=(const reference_wrapper<T>& x) noexcept; 52 53 // access 54 operator T& () const noexcept; 55 T& get() const noexcept; 56 57 // invoke 58 template <class... ArgTypes> 59 typename result_of<T&(ArgTypes&&...)>::type 60 operator() (ArgTypes&&...) const; 61}; 62 63template <class T> reference_wrapper<T> ref(T& t) noexcept; 64template <class T> void ref(const T&& t) = delete; 65template <class T> reference_wrapper<T> ref(reference_wrapper<T>t) noexcept; 66 67template <class T> reference_wrapper<const T> cref(const T& t) noexcept; 68template <class T> void cref(const T&& t) = delete; 69template <class T> reference_wrapper<const T> cref(reference_wrapper<T> t) noexcept; 70 71template <class T> // <class T=void> in C++14 72struct plus : binary_function<T, T, T> 73{ 74 T operator()(const T& x, const T& y) const; 75}; 76 77template <class T> // <class T=void> in C++14 78struct minus : binary_function<T, T, T> 79{ 80 T operator()(const T& x, const T& y) const; 81}; 82 83template <class T> // <class T=void> in C++14 84struct multiplies : binary_function<T, T, T> 85{ 86 T operator()(const T& x, const T& y) const; 87}; 88 89template <class T> // <class T=void> in C++14 90struct divides : binary_function<T, T, T> 91{ 92 T operator()(const T& x, const T& y) const; 93}; 94 95template <class T> // <class T=void> in C++14 96struct modulus : binary_function<T, T, T> 97{ 98 T operator()(const T& x, const T& y) const; 99}; 100 101template <class T> // <class T=void> in C++14 102struct negate : unary_function<T, T> 103{ 104 T operator()(const T& x) const; 105}; 106 107template <class T> // <class T=void> in C++14 108struct equal_to : binary_function<T, T, bool> 109{ 110 bool operator()(const T& x, const T& y) const; 111}; 112 113template <class T> // <class T=void> in C++14 114struct not_equal_to : binary_function<T, T, bool> 115{ 116 bool operator()(const T& x, const T& y) const; 117}; 118 119template <class T> // <class T=void> in C++14 120struct greater : binary_function<T, T, bool> 121{ 122 bool operator()(const T& x, const T& y) const; 123}; 124 125template <class T> // <class T=void> in C++14 126struct less : binary_function<T, T, bool> 127{ 128 bool operator()(const T& x, const T& y) const; 129}; 130 131template <class T> // <class T=void> in C++14 132struct greater_equal : binary_function<T, T, bool> 133{ 134 bool operator()(const T& x, const T& y) const; 135}; 136 137template <class T> // <class T=void> in C++14 138struct less_equal : binary_function<T, T, bool> 139{ 140 bool operator()(const T& x, const T& y) const; 141}; 142 143template <class T> // <class T=void> in C++14 144struct logical_and : binary_function<T, T, bool> 145{ 146 bool operator()(const T& x, const T& y) const; 147}; 148 149template <class T> // <class T=void> in C++14 150struct logical_or : binary_function<T, T, bool> 151{ 152 bool operator()(const T& x, const T& y) const; 153}; 154 155template <class T> // <class T=void> in C++14 156struct logical_not : unary_function<T, bool> 157{ 158 bool operator()(const T& x) const; 159}; 160 161template <class T> // <class T=void> in C++14 162struct bit_and : unary_function<T, bool> 163{ 164 bool operator()(const T& x, const T& y) const; 165}; 166 167template <class T> // <class T=void> in C++14 168struct bit_or : unary_function<T, bool> 169{ 170 bool operator()(const T& x, const T& y) const; 171}; 172 173template <class T> // <class T=void> in C++14 174struct bit_xor : unary_function<T, bool> 175{ 176 bool operator()(const T& x, const T& y) const; 177}; 178 179template <class T=void> // C++14 180struct bit_xor : unary_function<T, bool> 181{ 182 bool operator()(const T& x) const; 183}; 184 185template <class Predicate> 186class unary_negate 187 : public unary_function<typename Predicate::argument_type, bool> 188{ 189public: 190 explicit unary_negate(const Predicate& pred); 191 bool operator()(const typename Predicate::argument_type& x) const; 192}; 193 194template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred); 195 196template <class Predicate> 197class binary_negate 198 : public binary_function<typename Predicate::first_argument_type, 199 typename Predicate::second_argument_type, 200 bool> 201{ 202public: 203 explicit binary_negate(const Predicate& pred); 204 bool operator()(const typename Predicate::first_argument_type& x, 205 const typename Predicate::second_argument_type& y) const; 206}; 207 208template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred); 209 210template<class T> struct is_bind_expression; 211template<class T> struct is_placeholder; 212 213template<class Fn, class... BoundArgs> 214 unspecified bind(Fn&&, BoundArgs&&...); 215template<class R, class Fn, class... BoundArgs> 216 unspecified bind(Fn&&, BoundArgs&&...); 217 218namespace placeholders { 219 // M is the implementation-defined number of placeholders 220 extern unspecified _1; 221 extern unspecified _2; 222 . 223 . 224 . 225 extern unspecified _Mp; 226} 227 228template <class Operation> 229class binder1st 230 : public unary_function<typename Operation::second_argument_type, 231 typename Operation::result_type> 232{ 233protected: 234 Operation op; 235 typename Operation::first_argument_type value; 236public: 237 binder1st(const Operation& x, const typename Operation::first_argument_type y); 238 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 239 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 240}; 241 242template <class Operation, class T> 243binder1st<Operation> bind1st(const Operation& op, const T& x); 244 245template <class Operation> 246class binder2nd 247 : public unary_function<typename Operation::first_argument_type, 248 typename Operation::result_type> 249{ 250protected: 251 Operation op; 252 typename Operation::second_argument_type value; 253public: 254 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 255 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 256 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 257}; 258 259template <class Operation, class T> 260binder2nd<Operation> bind2nd(const Operation& op, const T& x); 261 262template <class Arg, class Result> 263class pointer_to_unary_function : public unary_function<Arg, Result> 264{ 265public: 266 explicit pointer_to_unary_function(Result (*f)(Arg)); 267 Result operator()(Arg x) const; 268}; 269 270template <class Arg, class Result> 271pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); 272 273template <class Arg1, class Arg2, class Result> 274class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 275{ 276public: 277 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 278 Result operator()(Arg1 x, Arg2 y) const; 279}; 280 281template <class Arg1, class Arg2, class Result> 282pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); 283 284template<class S, class T> 285class mem_fun_t : public unary_function<T*, S> 286{ 287public: 288 explicit mem_fun_t(S (T::*p)()); 289 S operator()(T* p) const; 290}; 291 292template<class S, class T, class A> 293class mem_fun1_t : public binary_function<T*, A, S> 294{ 295public: 296 explicit mem_fun1_t(S (T::*p)(A)); 297 S operator()(T* p, A x) const; 298}; 299 300template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); 301template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); 302 303template<class S, class T> 304class mem_fun_ref_t : public unary_function<T, S> 305{ 306public: 307 explicit mem_fun_ref_t(S (T::*p)()); 308 S operator()(T& p) const; 309}; 310 311template<class S, class T, class A> 312class mem_fun1_ref_t : public binary_function<T, A, S> 313{ 314public: 315 explicit mem_fun1_ref_t(S (T::*p)(A)); 316 S operator()(T& p, A x) const; 317}; 318 319template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); 320template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); 321 322template <class S, class T> 323class const_mem_fun_t : public unary_function<const T*, S> 324{ 325public: 326 explicit const_mem_fun_t(S (T::*p)() const); 327 S operator()(const T* p) const; 328}; 329 330template <class S, class T, class A> 331class const_mem_fun1_t : public binary_function<const T*, A, S> 332{ 333public: 334 explicit const_mem_fun1_t(S (T::*p)(A) const); 335 S operator()(const T* p, A x) const; 336}; 337 338template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); 339template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); 340 341template <class S, class T> 342class const_mem_fun_ref_t : public unary_function<T, S> 343{ 344public: 345 explicit const_mem_fun_ref_t(S (T::*p)() const); 346 S operator()(const T& p) const; 347}; 348 349template <class S, class T, class A> 350class const_mem_fun1_ref_t : public binary_function<T, A, S> 351{ 352public: 353 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 354 S operator()(const T& p, A x) const; 355}; 356 357template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); 358template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); 359 360template<class R, class T> unspecified mem_fn(R T::*); 361 362class bad_function_call 363 : public exception 364{ 365}; 366 367template<class> class function; // undefined 368 369template<class R, class... ArgTypes> 370class function<R(ArgTypes...)> 371 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 372 // ArgTypes contains T1 373 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 374 // ArgTypes contains T1 and T2 375{ 376public: 377 typedef R result_type; 378 379 // construct/copy/destroy: 380 function() noexcept; 381 function(nullptr_t) noexcept; 382 function(const function&); 383 function(function&&) noexcept; 384 template<class F> 385 function(F); 386 template<Allocator Alloc> 387 function(allocator_arg_t, const Alloc&) noexcept; 388 template<Allocator Alloc> 389 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; 390 template<Allocator Alloc> 391 function(allocator_arg_t, const Alloc&, const function&); 392 template<Allocator Alloc> 393 function(allocator_arg_t, const Alloc&, function&&); 394 template<class F, Allocator Alloc> 395 function(allocator_arg_t, const Alloc&, F); 396 397 function& operator=(const function&); 398 function& operator=(function&&) noexcept; 399 function& operator=(nullptr_t) noexcept; 400 template<class F> 401 function& operator=(F&&); 402 template<class F> 403 function& operator=(reference_wrapper<F>) noexcept; 404 405 ~function(); 406 407 // function modifiers: 408 void swap(function&) noexcept; 409 template<class F, class Alloc> 410 void assign(F&&, const Alloc&); 411 412 // function capacity: 413 explicit operator bool() const noexcept; 414 415 // function invocation: 416 R operator()(ArgTypes...) const; 417 418 // function target access: 419 const std::type_info& target_type() const noexcept; 420 template <typename T> T* target() noexcept; 421 template <typename T> const T* target() const noexcept; 422}; 423 424// Null pointer comparisons: 425template <class R, class ... ArgTypes> 426 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 427 428template <class R, class ... ArgTypes> 429 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 430 431template <class R, class ... ArgTypes> 432 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 433 434template <class R, class ... ArgTypes> 435 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 436 437// specialized algorithms: 438template <class R, class ... ArgTypes> 439 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 440 441template <class T> struct hash; 442 443template <> struct hash<bool>; 444template <> struct hash<char>; 445template <> struct hash<signed char>; 446template <> struct hash<unsigned char>; 447template <> struct hash<char16_t>; 448template <> struct hash<char32_t>; 449template <> struct hash<wchar_t>; 450template <> struct hash<short>; 451template <> struct hash<unsigned short>; 452template <> struct hash<int>; 453template <> struct hash<unsigned int>; 454template <> struct hash<long>; 455template <> struct hash<long long>; 456template <> struct hash<unsigned long>; 457template <> struct hash<unsigned long long>; 458 459template <> struct hash<float>; 460template <> struct hash<double>; 461template <> struct hash<long double>; 462 463template<class T> struct hash<T*>; 464 465} // std 466 467POLICY: For non-variadic implementations, the number of arguments is limited 468 to 3. It is hoped that the need for non-variadic implementations 469 will be minimal. 470 471*/ 472 473#include <__config> 474#include <type_traits> 475#include <typeinfo> 476#include <exception> 477#include <memory> 478#include <tuple> 479 480#include <__functional_base> 481 482#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 483#pragma GCC system_header 484#endif 485 486_LIBCPP_BEGIN_NAMESPACE_STD 487 488#if _LIBCPP_STD_VER > 11 489template <class _Tp = void> 490#else 491template <class _Tp> 492#endif 493struct _LIBCPP_TYPE_VIS_ONLY plus : binary_function<_Tp, _Tp, _Tp> 494{ 495 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 496 _Tp operator()(const _Tp& __x, const _Tp& __y) const 497 {return __x + __y;} 498}; 499 500#if _LIBCPP_STD_VER > 11 501template <> 502struct _LIBCPP_TYPE_VIS_ONLY plus<void> 503{ 504 template <class _T1, class _T2> 505 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 506 auto operator()(_T1&& __t, _T2&& __u) const 507 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 508 -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 509 { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 510 typedef void is_transparent; 511}; 512#endif 513 514 515#if _LIBCPP_STD_VER > 11 516template <class _Tp = void> 517#else 518template <class _Tp> 519#endif 520struct _LIBCPP_TYPE_VIS_ONLY minus : binary_function<_Tp, _Tp, _Tp> 521{ 522 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 523 _Tp operator()(const _Tp& __x, const _Tp& __y) const 524 {return __x - __y;} 525}; 526 527#if _LIBCPP_STD_VER > 11 528template <> 529struct _LIBCPP_TYPE_VIS_ONLY minus<void> 530{ 531 template <class _T1, class _T2> 532 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 533 auto operator()(_T1&& __t, _T2&& __u) const 534 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) 535 -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) 536 { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } 537 typedef void is_transparent; 538}; 539#endif 540 541 542#if _LIBCPP_STD_VER > 11 543template <class _Tp = void> 544#else 545template <class _Tp> 546#endif 547struct _LIBCPP_TYPE_VIS_ONLY multiplies : binary_function<_Tp, _Tp, _Tp> 548{ 549 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 550 _Tp operator()(const _Tp& __x, const _Tp& __y) const 551 {return __x * __y;} 552}; 553 554#if _LIBCPP_STD_VER > 11 555template <> 556struct _LIBCPP_TYPE_VIS_ONLY multiplies<void> 557{ 558 template <class _T1, class _T2> 559 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 560 auto operator()(_T1&& __t, _T2&& __u) const 561 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) 562 -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) 563 { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } 564 typedef void is_transparent; 565}; 566#endif 567 568 569#if _LIBCPP_STD_VER > 11 570template <class _Tp = void> 571#else 572template <class _Tp> 573#endif 574struct _LIBCPP_TYPE_VIS_ONLY divides : binary_function<_Tp, _Tp, _Tp> 575{ 576 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 577 _Tp operator()(const _Tp& __x, const _Tp& __y) const 578 {return __x / __y;} 579}; 580 581#if _LIBCPP_STD_VER > 11 582template <> 583struct _LIBCPP_TYPE_VIS_ONLY divides<void> 584{ 585 template <class _T1, class _T2> 586 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 587 auto operator()(_T1&& __t, _T2&& __u) const 588 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) 589 -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) 590 { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } 591 typedef void is_transparent; 592}; 593#endif 594 595 596#if _LIBCPP_STD_VER > 11 597template <class _Tp = void> 598#else 599template <class _Tp> 600#endif 601struct _LIBCPP_TYPE_VIS_ONLY modulus : binary_function<_Tp, _Tp, _Tp> 602{ 603 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 604 _Tp operator()(const _Tp& __x, const _Tp& __y) const 605 {return __x % __y;} 606}; 607 608#if _LIBCPP_STD_VER > 11 609template <> 610struct _LIBCPP_TYPE_VIS_ONLY modulus<void> 611{ 612 template <class _T1, class _T2> 613 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 614 auto operator()(_T1&& __t, _T2&& __u) const 615 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) 616 -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) 617 { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } 618 typedef void is_transparent; 619}; 620#endif 621 622 623#if _LIBCPP_STD_VER > 11 624template <class _Tp = void> 625#else 626template <class _Tp> 627#endif 628struct _LIBCPP_TYPE_VIS_ONLY negate : unary_function<_Tp, _Tp> 629{ 630 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 631 _Tp operator()(const _Tp& __x) const 632 {return -__x;} 633}; 634 635#if _LIBCPP_STD_VER > 11 636template <> 637struct _LIBCPP_TYPE_VIS_ONLY negate<void> 638{ 639 template <class _Tp> 640 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 641 auto operator()(_Tp&& __x) const 642 _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) 643 -> decltype (- _VSTD::forward<_Tp>(__x)) 644 { return - _VSTD::forward<_Tp>(__x); } 645 typedef void is_transparent; 646}; 647#endif 648 649 650#if _LIBCPP_STD_VER > 11 651template <class _Tp = void> 652#else 653template <class _Tp> 654#endif 655struct _LIBCPP_TYPE_VIS_ONLY equal_to : binary_function<_Tp, _Tp, bool> 656{ 657 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 658 bool operator()(const _Tp& __x, const _Tp& __y) const 659 {return __x == __y;} 660}; 661 662#if _LIBCPP_STD_VER > 11 663template <> 664struct _LIBCPP_TYPE_VIS_ONLY equal_to<void> 665{ 666 template <class _T1, class _T2> 667 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 668 auto operator()(_T1&& __t, _T2&& __u) const 669 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) 670 -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) 671 { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } 672 typedef void is_transparent; 673}; 674#endif 675 676 677#if _LIBCPP_STD_VER > 11 678template <class _Tp = void> 679#else 680template <class _Tp> 681#endif 682struct _LIBCPP_TYPE_VIS_ONLY not_equal_to : binary_function<_Tp, _Tp, bool> 683{ 684 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 685 bool operator()(const _Tp& __x, const _Tp& __y) const 686 {return __x != __y;} 687}; 688 689#if _LIBCPP_STD_VER > 11 690template <> 691struct _LIBCPP_TYPE_VIS_ONLY not_equal_to<void> 692{ 693 template <class _T1, class _T2> 694 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 695 auto operator()(_T1&& __t, _T2&& __u) const 696 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) 697 -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) 698 { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } 699 typedef void is_transparent; 700}; 701#endif 702 703 704#if _LIBCPP_STD_VER > 11 705template <class _Tp = void> 706#else 707template <class _Tp> 708#endif 709struct _LIBCPP_TYPE_VIS_ONLY greater : binary_function<_Tp, _Tp, bool> 710{ 711 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 712 bool operator()(const _Tp& __x, const _Tp& __y) const 713 {return __x > __y;} 714}; 715 716#if _LIBCPP_STD_VER > 11 717template <> 718struct _LIBCPP_TYPE_VIS_ONLY greater<void> 719{ 720 template <class _T1, class _T2> 721 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 722 auto operator()(_T1&& __t, _T2&& __u) const 723 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) 724 -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) 725 { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } 726 typedef void is_transparent; 727}; 728#endif 729 730 731// less in <__functional_base> 732 733#if _LIBCPP_STD_VER > 11 734template <class _Tp = void> 735#else 736template <class _Tp> 737#endif 738struct _LIBCPP_TYPE_VIS_ONLY greater_equal : binary_function<_Tp, _Tp, bool> 739{ 740 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 741 bool operator()(const _Tp& __x, const _Tp& __y) const 742 {return __x >= __y;} 743}; 744 745#if _LIBCPP_STD_VER > 11 746template <> 747struct _LIBCPP_TYPE_VIS_ONLY greater_equal<void> 748{ 749 template <class _T1, class _T2> 750 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 751 auto operator()(_T1&& __t, _T2&& __u) const 752 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) 753 -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) 754 { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } 755 typedef void is_transparent; 756}; 757#endif 758 759 760#if _LIBCPP_STD_VER > 11 761template <class _Tp = void> 762#else 763template <class _Tp> 764#endif 765struct _LIBCPP_TYPE_VIS_ONLY less_equal : binary_function<_Tp, _Tp, bool> 766{ 767 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 768 bool operator()(const _Tp& __x, const _Tp& __y) const 769 {return __x <= __y;} 770}; 771 772#if _LIBCPP_STD_VER > 11 773template <> 774struct _LIBCPP_TYPE_VIS_ONLY less_equal<void> 775{ 776 template <class _T1, class _T2> 777 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 778 auto operator()(_T1&& __t, _T2&& __u) const 779 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) 780 -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) 781 { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } 782 typedef void is_transparent; 783}; 784#endif 785 786 787#if _LIBCPP_STD_VER > 11 788template <class _Tp = void> 789#else 790template <class _Tp> 791#endif 792struct _LIBCPP_TYPE_VIS_ONLY logical_and : binary_function<_Tp, _Tp, bool> 793{ 794 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 795 bool operator()(const _Tp& __x, const _Tp& __y) const 796 {return __x && __y;} 797}; 798 799#if _LIBCPP_STD_VER > 11 800template <> 801struct _LIBCPP_TYPE_VIS_ONLY logical_and<void> 802{ 803 template <class _T1, class _T2> 804 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 805 auto operator()(_T1&& __t, _T2&& __u) const 806 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) 807 -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) 808 { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } 809 typedef void is_transparent; 810}; 811#endif 812 813 814#if _LIBCPP_STD_VER > 11 815template <class _Tp = void> 816#else 817template <class _Tp> 818#endif 819struct _LIBCPP_TYPE_VIS_ONLY logical_or : binary_function<_Tp, _Tp, bool> 820{ 821 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 822 bool operator()(const _Tp& __x, const _Tp& __y) const 823 {return __x || __y;} 824}; 825 826#if _LIBCPP_STD_VER > 11 827template <> 828struct _LIBCPP_TYPE_VIS_ONLY logical_or<void> 829{ 830 template <class _T1, class _T2> 831 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 832 auto operator()(_T1&& __t, _T2&& __u) const 833 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) 834 -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) 835 { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } 836 typedef void is_transparent; 837}; 838#endif 839 840 841#if _LIBCPP_STD_VER > 11 842template <class _Tp = void> 843#else 844template <class _Tp> 845#endif 846struct _LIBCPP_TYPE_VIS_ONLY logical_not : unary_function<_Tp, bool> 847{ 848 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 849 bool operator()(const _Tp& __x) const 850 {return !__x;} 851}; 852 853#if _LIBCPP_STD_VER > 11 854template <> 855struct _LIBCPP_TYPE_VIS_ONLY logical_not<void> 856{ 857 template <class _Tp> 858 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 859 auto operator()(_Tp&& __x) const 860 _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) 861 -> decltype (!_VSTD::forward<_Tp>(__x)) 862 { return !_VSTD::forward<_Tp>(__x); } 863 typedef void is_transparent; 864}; 865#endif 866 867 868#if _LIBCPP_STD_VER > 11 869template <class _Tp = void> 870#else 871template <class _Tp> 872#endif 873struct _LIBCPP_TYPE_VIS_ONLY bit_and : binary_function<_Tp, _Tp, _Tp> 874{ 875 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 876 _Tp operator()(const _Tp& __x, const _Tp& __y) const 877 {return __x & __y;} 878}; 879 880#if _LIBCPP_STD_VER > 11 881template <> 882struct _LIBCPP_TYPE_VIS_ONLY bit_and<void> 883{ 884 template <class _T1, class _T2> 885 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 886 auto operator()(_T1&& __t, _T2&& __u) const 887 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) 888 -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) 889 { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } 890 typedef void is_transparent; 891}; 892#endif 893 894 895#if _LIBCPP_STD_VER > 11 896template <class _Tp = void> 897#else 898template <class _Tp> 899#endif 900struct _LIBCPP_TYPE_VIS_ONLY bit_or : binary_function<_Tp, _Tp, _Tp> 901{ 902 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 903 _Tp operator()(const _Tp& __x, const _Tp& __y) const 904 {return __x | __y;} 905}; 906 907#if _LIBCPP_STD_VER > 11 908template <> 909struct _LIBCPP_TYPE_VIS_ONLY bit_or<void> 910{ 911 template <class _T1, class _T2> 912 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 913 auto operator()(_T1&& __t, _T2&& __u) const 914 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) 915 -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) 916 { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } 917 typedef void is_transparent; 918}; 919#endif 920 921 922#if _LIBCPP_STD_VER > 11 923template <class _Tp = void> 924#else 925template <class _Tp> 926#endif 927struct _LIBCPP_TYPE_VIS_ONLY bit_xor : binary_function<_Tp, _Tp, _Tp> 928{ 929 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 930 _Tp operator()(const _Tp& __x, const _Tp& __y) const 931 {return __x ^ __y;} 932}; 933 934#if _LIBCPP_STD_VER > 11 935template <> 936struct _LIBCPP_TYPE_VIS_ONLY bit_xor<void> 937{ 938 template <class _T1, class _T2> 939 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 940 auto operator()(_T1&& __t, _T2&& __u) const 941 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) 942 -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) 943 { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } 944 typedef void is_transparent; 945}; 946#endif 947 948 949#if _LIBCPP_STD_VER > 11 950template <class _Tp = void> 951struct _LIBCPP_TYPE_VIS_ONLY bit_not : unary_function<_Tp, _Tp> 952{ 953 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 954 _Tp operator()(const _Tp& __x) const 955 {return ~__x;} 956}; 957 958template <> 959struct _LIBCPP_TYPE_VIS_ONLY bit_not<void> 960{ 961 template <class _Tp> 962 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 963 auto operator()(_Tp&& __x) const 964 _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) 965 -> decltype (~_VSTD::forward<_Tp>(__x)) 966 { return ~_VSTD::forward<_Tp>(__x); } 967 typedef void is_transparent; 968}; 969#endif 970 971template <class _Predicate> 972class _LIBCPP_TYPE_VIS_ONLY unary_negate 973 : public unary_function<typename _Predicate::argument_type, bool> 974{ 975 _Predicate __pred_; 976public: 977 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 978 explicit unary_negate(const _Predicate& __pred) 979 : __pred_(__pred) {} 980 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 981 bool operator()(const typename _Predicate::argument_type& __x) const 982 {return !__pred_(__x);} 983}; 984 985template <class _Predicate> 986inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 987unary_negate<_Predicate> 988not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 989 990template <class _Predicate> 991class _LIBCPP_TYPE_VIS_ONLY binary_negate 992 : public binary_function<typename _Predicate::first_argument_type, 993 typename _Predicate::second_argument_type, 994 bool> 995{ 996 _Predicate __pred_; 997public: 998 _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 999 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} 1000 1001 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1002 bool operator()(const typename _Predicate::first_argument_type& __x, 1003 const typename _Predicate::second_argument_type& __y) const 1004 {return !__pred_(__x, __y);} 1005}; 1006 1007template <class _Predicate> 1008inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1009binary_negate<_Predicate> 1010not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 1011 1012template <class __Operation> 1013class _LIBCPP_TYPE_VIS_ONLY binder1st 1014 : public unary_function<typename __Operation::second_argument_type, 1015 typename __Operation::result_type> 1016{ 1017protected: 1018 __Operation op; 1019 typename __Operation::first_argument_type value; 1020public: 1021 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 1022 const typename __Operation::first_argument_type __y) 1023 : op(__x), value(__y) {} 1024 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1025 (typename __Operation::second_argument_type& __x) const 1026 {return op(value, __x);} 1027 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1028 (const typename __Operation::second_argument_type& __x) const 1029 {return op(value, __x);} 1030}; 1031 1032template <class __Operation, class _Tp> 1033inline _LIBCPP_INLINE_VISIBILITY 1034binder1st<__Operation> 1035bind1st(const __Operation& __op, const _Tp& __x) 1036 {return binder1st<__Operation>(__op, __x);} 1037 1038template <class __Operation> 1039class _LIBCPP_TYPE_VIS_ONLY binder2nd 1040 : public unary_function<typename __Operation::first_argument_type, 1041 typename __Operation::result_type> 1042{ 1043protected: 1044 __Operation op; 1045 typename __Operation::second_argument_type value; 1046public: 1047 _LIBCPP_INLINE_VISIBILITY 1048 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 1049 : op(__x), value(__y) {} 1050 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1051 ( typename __Operation::first_argument_type& __x) const 1052 {return op(__x, value);} 1053 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1054 (const typename __Operation::first_argument_type& __x) const 1055 {return op(__x, value);} 1056}; 1057 1058template <class __Operation, class _Tp> 1059inline _LIBCPP_INLINE_VISIBILITY 1060binder2nd<__Operation> 1061bind2nd(const __Operation& __op, const _Tp& __x) 1062 {return binder2nd<__Operation>(__op, __x);} 1063 1064template <class _Arg, class _Result> 1065class _LIBCPP_TYPE_VIS_ONLY pointer_to_unary_function 1066 : public unary_function<_Arg, _Result> 1067{ 1068 _Result (*__f_)(_Arg); 1069public: 1070 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 1071 : __f_(__f) {} 1072 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 1073 {return __f_(__x);} 1074}; 1075 1076template <class _Arg, class _Result> 1077inline _LIBCPP_INLINE_VISIBILITY 1078pointer_to_unary_function<_Arg,_Result> 1079ptr_fun(_Result (*__f)(_Arg)) 1080 {return pointer_to_unary_function<_Arg,_Result>(__f);} 1081 1082template <class _Arg1, class _Arg2, class _Result> 1083class _LIBCPP_TYPE_VIS_ONLY pointer_to_binary_function 1084 : public binary_function<_Arg1, _Arg2, _Result> 1085{ 1086 _Result (*__f_)(_Arg1, _Arg2); 1087public: 1088 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 1089 : __f_(__f) {} 1090 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 1091 {return __f_(__x, __y);} 1092}; 1093 1094template <class _Arg1, class _Arg2, class _Result> 1095inline _LIBCPP_INLINE_VISIBILITY 1096pointer_to_binary_function<_Arg1,_Arg2,_Result> 1097ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 1098 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 1099 1100template<class _Sp, class _Tp> 1101class _LIBCPP_TYPE_VIS_ONLY mem_fun_t : public unary_function<_Tp*, _Sp> 1102{ 1103 _Sp (_Tp::*__p_)(); 1104public: 1105 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 1106 : __p_(__p) {} 1107 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 1108 {return (__p->*__p_)();} 1109}; 1110 1111template<class _Sp, class _Tp, class _Ap> 1112class _LIBCPP_TYPE_VIS_ONLY mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp> 1113{ 1114 _Sp (_Tp::*__p_)(_Ap); 1115public: 1116 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 1117 : __p_(__p) {} 1118 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 1119 {return (__p->*__p_)(__x);} 1120}; 1121 1122template<class _Sp, class _Tp> 1123inline _LIBCPP_INLINE_VISIBILITY 1124mem_fun_t<_Sp,_Tp> 1125mem_fun(_Sp (_Tp::*__f)()) 1126 {return mem_fun_t<_Sp,_Tp>(__f);} 1127 1128template<class _Sp, class _Tp, class _Ap> 1129inline _LIBCPP_INLINE_VISIBILITY 1130mem_fun1_t<_Sp,_Tp,_Ap> 1131mem_fun(_Sp (_Tp::*__f)(_Ap)) 1132 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1133 1134template<class _Sp, class _Tp> 1135class _LIBCPP_TYPE_VIS_ONLY mem_fun_ref_t : public unary_function<_Tp, _Sp> 1136{ 1137 _Sp (_Tp::*__p_)(); 1138public: 1139 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 1140 : __p_(__p) {} 1141 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 1142 {return (__p.*__p_)();} 1143}; 1144 1145template<class _Sp, class _Tp, class _Ap> 1146class _LIBCPP_TYPE_VIS_ONLY mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp> 1147{ 1148 _Sp (_Tp::*__p_)(_Ap); 1149public: 1150 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 1151 : __p_(__p) {} 1152 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 1153 {return (__p.*__p_)(__x);} 1154}; 1155 1156template<class _Sp, class _Tp> 1157inline _LIBCPP_INLINE_VISIBILITY 1158mem_fun_ref_t<_Sp,_Tp> 1159mem_fun_ref(_Sp (_Tp::*__f)()) 1160 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 1161 1162template<class _Sp, class _Tp, class _Ap> 1163inline _LIBCPP_INLINE_VISIBILITY 1164mem_fun1_ref_t<_Sp,_Tp,_Ap> 1165mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 1166 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1167 1168template <class _Sp, class _Tp> 1169class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_t : public unary_function<const _Tp*, _Sp> 1170{ 1171 _Sp (_Tp::*__p_)() const; 1172public: 1173 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 1174 : __p_(__p) {} 1175 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 1176 {return (__p->*__p_)();} 1177}; 1178 1179template <class _Sp, class _Tp, class _Ap> 1180class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp> 1181{ 1182 _Sp (_Tp::*__p_)(_Ap) const; 1183public: 1184 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 1185 : __p_(__p) {} 1186 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 1187 {return (__p->*__p_)(__x);} 1188}; 1189 1190template <class _Sp, class _Tp> 1191inline _LIBCPP_INLINE_VISIBILITY 1192const_mem_fun_t<_Sp,_Tp> 1193mem_fun(_Sp (_Tp::*__f)() const) 1194 {return const_mem_fun_t<_Sp,_Tp>(__f);} 1195 1196template <class _Sp, class _Tp, class _Ap> 1197inline _LIBCPP_INLINE_VISIBILITY 1198const_mem_fun1_t<_Sp,_Tp,_Ap> 1199mem_fun(_Sp (_Tp::*__f)(_Ap) const) 1200 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1201 1202template <class _Sp, class _Tp> 1203class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_ref_t : public unary_function<_Tp, _Sp> 1204{ 1205 _Sp (_Tp::*__p_)() const; 1206public: 1207 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 1208 : __p_(__p) {} 1209 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 1210 {return (__p.*__p_)();} 1211}; 1212 1213template <class _Sp, class _Tp, class _Ap> 1214class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_ref_t 1215 : public binary_function<_Tp, _Ap, _Sp> 1216{ 1217 _Sp (_Tp::*__p_)(_Ap) const; 1218public: 1219 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 1220 : __p_(__p) {} 1221 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 1222 {return (__p.*__p_)(__x);} 1223}; 1224 1225template <class _Sp, class _Tp> 1226inline _LIBCPP_INLINE_VISIBILITY 1227const_mem_fun_ref_t<_Sp,_Tp> 1228mem_fun_ref(_Sp (_Tp::*__f)() const) 1229 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 1230 1231template <class _Sp, class _Tp, class _Ap> 1232inline _LIBCPP_INLINE_VISIBILITY 1233const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 1234mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 1235 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1236 1237//////////////////////////////////////////////////////////////////////////////// 1238// MEMFUN 1239//============================================================================== 1240 1241template <class _Tp> 1242class __mem_fn 1243 : public __weak_result_type<_Tp> 1244{ 1245public: 1246 // types 1247 typedef _Tp type; 1248private: 1249 type __f_; 1250 1251public: 1252 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) : __f_(__f) {} 1253 1254#ifndef _LIBCPP_HAS_NO_VARIADICS 1255 // invoke 1256 template <class... _ArgTypes> 1257 _LIBCPP_INLINE_VISIBILITY 1258 typename __invoke_return<type, _ArgTypes...>::type 1259 operator() (_ArgTypes&&... __args) const { 1260 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 1261 } 1262#else 1263 1264 template <class _A0> 1265 typename __invoke_return0<type, _A0>::type 1266 operator() (_A0& __a0) const { 1267 return __invoke(__f_, __a0); 1268 } 1269 1270 template <class _A0, class _A1> 1271 typename __invoke_return1<type, _A0, _A1>::type 1272 operator() (_A0& __a0, _A1& __a1) const { 1273 return __invoke(__f_, __a0, __a1); 1274 } 1275 1276 template <class _A0, class _A1, class _A2> 1277 typename __invoke_return2<type, _A0, _A1, _A2>::type 1278 operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { 1279 return __invoke(__f_, __a0, __a1, __a2); 1280 } 1281#endif 1282}; 1283 1284template<class _Rp, class _Tp> 1285inline _LIBCPP_INLINE_VISIBILITY 1286__mem_fn<_Rp _Tp::*> 1287mem_fn(_Rp _Tp::* __pm) 1288{ 1289 return __mem_fn<_Rp _Tp::*>(__pm); 1290} 1291 1292//////////////////////////////////////////////////////////////////////////////// 1293// FUNCTION 1294//============================================================================== 1295 1296// bad_function_call 1297 1298class _LIBCPP_EXCEPTION_ABI bad_function_call 1299 : public exception 1300{ 1301}; 1302 1303template<class _Fp> class _LIBCPP_TYPE_VIS_ONLY function; // undefined 1304 1305namespace __function 1306{ 1307 1308template<class _Rp> 1309struct __maybe_derive_from_unary_function 1310{ 1311}; 1312 1313template<class _Rp, class _A1> 1314struct __maybe_derive_from_unary_function<_Rp(_A1)> 1315 : public unary_function<_A1, _Rp> 1316{ 1317}; 1318 1319template<class _Rp> 1320struct __maybe_derive_from_binary_function 1321{ 1322}; 1323 1324template<class _Rp, class _A1, class _A2> 1325struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 1326 : public binary_function<_A1, _A2, _Rp> 1327{ 1328}; 1329 1330template <class _Fp> 1331_LIBCPP_INLINE_VISIBILITY 1332bool __not_null(_Fp const&) { return true; } 1333 1334template <class _Fp> 1335_LIBCPP_INLINE_VISIBILITY 1336bool __not_null(_Fp* __ptr) { return __ptr; } 1337 1338template <class _Ret, class _Class> 1339_LIBCPP_INLINE_VISIBILITY 1340bool __not_null(_Ret _Class::*__ptr) { return __ptr; } 1341 1342template <class _Fp> 1343_LIBCPP_INLINE_VISIBILITY 1344bool __not_null(function<_Fp> const& __f) { return !!__f; } 1345 1346} // namespace __function 1347 1348#ifndef _LIBCPP_HAS_NO_VARIADICS 1349 1350namespace __function { 1351 1352template<class _Fp> class __base; 1353 1354template<class _Rp, class ..._ArgTypes> 1355class __base<_Rp(_ArgTypes...)> 1356{ 1357 __base(const __base&); 1358 __base& operator=(const __base&); 1359public: 1360 _LIBCPP_INLINE_VISIBILITY __base() {} 1361 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 1362 virtual __base* __clone() const = 0; 1363 virtual void __clone(__base*) const = 0; 1364 virtual void destroy() _NOEXCEPT = 0; 1365 virtual void destroy_deallocate() _NOEXCEPT = 0; 1366 virtual _Rp operator()(_ArgTypes&& ...) = 0; 1367#ifndef _LIBCPP_NO_RTTI 1368 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 1369 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 1370#endif // _LIBCPP_NO_RTTI 1371}; 1372 1373template<class _FD, class _Alloc, class _FB> class __func; 1374 1375template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1376class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 1377 : public __base<_Rp(_ArgTypes...)> 1378{ 1379 __compressed_pair<_Fp, _Alloc> __f_; 1380public: 1381 _LIBCPP_INLINE_VISIBILITY 1382 explicit __func(_Fp&& __f) 1383 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1384 _VSTD::forward_as_tuple()) {} 1385 _LIBCPP_INLINE_VISIBILITY 1386 explicit __func(const _Fp& __f, const _Alloc& __a) 1387 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1388 _VSTD::forward_as_tuple(__a)) {} 1389 1390 _LIBCPP_INLINE_VISIBILITY 1391 explicit __func(const _Fp& __f, _Alloc&& __a) 1392 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1393 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1394 1395 _LIBCPP_INLINE_VISIBILITY 1396 explicit __func(_Fp&& __f, _Alloc&& __a) 1397 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1398 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1399 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1400 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1401 virtual void destroy() _NOEXCEPT; 1402 virtual void destroy_deallocate() _NOEXCEPT; 1403 virtual _Rp operator()(_ArgTypes&& ... __arg); 1404#ifndef _LIBCPP_NO_RTTI 1405 virtual const void* target(const type_info&) const _NOEXCEPT; 1406 virtual const std::type_info& target_type() const _NOEXCEPT; 1407#endif // _LIBCPP_NO_RTTI 1408}; 1409 1410template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1411__base<_Rp(_ArgTypes...)>* 1412__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1413{ 1414 typedef allocator_traits<_Alloc> __alloc_traits; 1415 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1416 _Ap __a(__f_.second()); 1417 typedef __allocator_destructor<_Ap> _Dp; 1418 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1419 ::new (__hold.get()) __func(__f_.first(), _Alloc(__a)); 1420 return __hold.release(); 1421} 1422 1423template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1424void 1425__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1426{ 1427 ::new (__p) __func(__f_.first(), __f_.second()); 1428} 1429 1430template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1431void 1432__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1433{ 1434 __f_.~__compressed_pair<_Fp, _Alloc>(); 1435} 1436 1437template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1438void 1439__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1440{ 1441 typedef allocator_traits<_Alloc> __alloc_traits; 1442 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1443 _Ap __a(__f_.second()); 1444 __f_.~__compressed_pair<_Fp, _Alloc>(); 1445 __a.deallocate(this, 1); 1446} 1447 1448template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1449_Rp 1450__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1451{ 1452 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1453 return _Invoker::__call(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...); 1454} 1455 1456#ifndef _LIBCPP_NO_RTTI 1457 1458template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1459const void* 1460__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1461{ 1462 if (__ti == typeid(_Fp)) 1463 return &__f_.first(); 1464 return (const void*)0; 1465} 1466 1467template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1468const std::type_info& 1469__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1470{ 1471 return typeid(_Fp); 1472} 1473 1474#endif // _LIBCPP_NO_RTTI 1475 1476} // __function 1477 1478template<class _Rp, class ..._ArgTypes> 1479class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_ArgTypes...)> 1480 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 1481 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 1482{ 1483 typedef __function::__base<_Rp(_ArgTypes...)> __base; 1484 typename aligned_storage<3*sizeof(void*)>::type __buf_; 1485 __base* __f_; 1486 1487 template <class _Fp, bool = !is_same<_Fp, function>::value && 1488 __invokable<_Fp&, _ArgTypes...>::value> 1489 struct __callable; 1490 template <class _Fp> 1491 struct __callable<_Fp, true> 1492 { 1493 static const bool value = is_same<void, _Rp>::value || 1494 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, 1495 _Rp>::value; 1496 }; 1497 template <class _Fp> 1498 struct __callable<_Fp, false> 1499 { 1500 static const bool value = false; 1501 }; 1502public: 1503 typedef _Rp result_type; 1504 1505 // construct/copy/destroy: 1506 _LIBCPP_INLINE_VISIBILITY 1507 function() _NOEXCEPT : __f_(0) {} 1508 _LIBCPP_INLINE_VISIBILITY 1509 function(nullptr_t) _NOEXCEPT : __f_(0) {} 1510 function(const function&); 1511 function(function&&) _NOEXCEPT; 1512 template<class _Fp> 1513 function(_Fp, typename enable_if 1514 < 1515 __callable<_Fp>::value && 1516 !is_same<_Fp, function>::value 1517 >::type* = 0); 1518 1519 template<class _Alloc> 1520 _LIBCPP_INLINE_VISIBILITY 1521 function(allocator_arg_t, const _Alloc&) _NOEXCEPT : __f_(0) {} 1522 template<class _Alloc> 1523 _LIBCPP_INLINE_VISIBILITY 1524 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT : __f_(0) {} 1525 template<class _Alloc> 1526 function(allocator_arg_t, const _Alloc&, const function&); 1527 template<class _Alloc> 1528 function(allocator_arg_t, const _Alloc&, function&&); 1529 template<class _Fp, class _Alloc> 1530 function(allocator_arg_t, const _Alloc& __a, _Fp __f, 1531 typename enable_if<__callable<_Fp>::value>::type* = 0); 1532 1533 function& operator=(const function&); 1534 function& operator=(function&&) _NOEXCEPT; 1535 function& operator=(nullptr_t) _NOEXCEPT; 1536 template<class _Fp> 1537 typename enable_if 1538 < 1539 __callable<typename decay<_Fp>::type>::value && 1540 !is_same<typename remove_reference<_Fp>::type, function>::value, 1541 function& 1542 >::type 1543 operator=(_Fp&&); 1544 1545 ~function(); 1546 1547 // function modifiers: 1548 void swap(function&) _NOEXCEPT; 1549 template<class _Fp, class _Alloc> 1550 _LIBCPP_INLINE_VISIBILITY 1551 void assign(_Fp&& __f, const _Alloc& __a) 1552 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 1553 1554 // function capacity: 1555 _LIBCPP_INLINE_VISIBILITY 1556 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;} 1557 1558 // deleted overloads close possible hole in the type system 1559 template<class _R2, class... _ArgTypes2> 1560 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 1561 template<class _R2, class... _ArgTypes2> 1562 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 1563public: 1564 // function invocation: 1565 _Rp operator()(_ArgTypes...) const; 1566 1567#ifndef _LIBCPP_NO_RTTI 1568 // function target access: 1569 const std::type_info& target_type() const _NOEXCEPT; 1570 template <typename _Tp> _Tp* target() _NOEXCEPT; 1571 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 1572#endif // _LIBCPP_NO_RTTI 1573}; 1574 1575template<class _Rp, class ..._ArgTypes> 1576function<_Rp(_ArgTypes...)>::function(const function& __f) 1577{ 1578 if (__f.__f_ == 0) 1579 __f_ = 0; 1580 else if (__f.__f_ == (const __base*)&__f.__buf_) 1581 { 1582 __f_ = (__base*)&__buf_; 1583 __f.__f_->__clone(__f_); 1584 } 1585 else 1586 __f_ = __f.__f_->__clone(); 1587} 1588 1589template<class _Rp, class ..._ArgTypes> 1590template <class _Alloc> 1591function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1592 const function& __f) 1593{ 1594 if (__f.__f_ == 0) 1595 __f_ = 0; 1596 else if (__f.__f_ == (const __base*)&__f.__buf_) 1597 { 1598 __f_ = (__base*)&__buf_; 1599 __f.__f_->__clone(__f_); 1600 } 1601 else 1602 __f_ = __f.__f_->__clone(); 1603} 1604 1605template<class _Rp, class ..._ArgTypes> 1606function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 1607{ 1608 if (__f.__f_ == 0) 1609 __f_ = 0; 1610 else if (__f.__f_ == (__base*)&__f.__buf_) 1611 { 1612 __f_ = (__base*)&__buf_; 1613 __f.__f_->__clone(__f_); 1614 } 1615 else 1616 { 1617 __f_ = __f.__f_; 1618 __f.__f_ = 0; 1619 } 1620} 1621 1622template<class _Rp, class ..._ArgTypes> 1623template <class _Alloc> 1624function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1625 function&& __f) 1626{ 1627 if (__f.__f_ == 0) 1628 __f_ = 0; 1629 else if (__f.__f_ == (__base*)&__f.__buf_) 1630 { 1631 __f_ = (__base*)&__buf_; 1632 __f.__f_->__clone(__f_); 1633 } 1634 else 1635 { 1636 __f_ = __f.__f_; 1637 __f.__f_ = 0; 1638 } 1639} 1640 1641template<class _Rp, class ..._ArgTypes> 1642template <class _Fp> 1643function<_Rp(_ArgTypes...)>::function(_Fp __f, 1644 typename enable_if 1645 < 1646 __callable<_Fp>::value && 1647 !is_same<_Fp, function>::value 1648 >::type*) 1649 : __f_(0) 1650{ 1651 if (__function::__not_null(__f)) 1652 { 1653 typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF; 1654 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) 1655 { 1656 __f_ = (__base*)&__buf_; 1657 ::new (__f_) _FF(_VSTD::move(__f)); 1658 } 1659 else 1660 { 1661 typedef allocator<_FF> _Ap; 1662 _Ap __a; 1663 typedef __allocator_destructor<_Ap> _Dp; 1664 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1665 ::new (__hold.get()) _FF(_VSTD::move(__f), allocator<_Fp>(__a)); 1666 __f_ = __hold.release(); 1667 } 1668 } 1669} 1670 1671template<class _Rp, class ..._ArgTypes> 1672template <class _Fp, class _Alloc> 1673function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, 1674 typename enable_if<__callable<_Fp>::value>::type*) 1675 : __f_(0) 1676{ 1677 typedef allocator_traits<_Alloc> __alloc_traits; 1678 if (__function::__not_null(__f)) 1679 { 1680 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF; 1681 typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; 1682 _Ap __a(__a0); 1683 if (sizeof(_FF) <= sizeof(__buf_) && 1684 is_nothrow_copy_constructible<_Fp>::value && is_nothrow_copy_constructible<_Ap>::value) 1685 { 1686 __f_ = (__base*)&__buf_; 1687 ::new (__f_) _FF(_VSTD::move(__f), _Alloc(__a)); 1688 } 1689 else 1690 { 1691 typedef __allocator_destructor<_Ap> _Dp; 1692 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1693 ::new (__hold.get()) _FF(_VSTD::move(__f), _Alloc(__a)); 1694 __f_ = __hold.release(); 1695 } 1696 } 1697} 1698 1699template<class _Rp, class ..._ArgTypes> 1700function<_Rp(_ArgTypes...)>& 1701function<_Rp(_ArgTypes...)>::operator=(const function& __f) 1702{ 1703 function(__f).swap(*this); 1704 return *this; 1705} 1706 1707template<class _Rp, class ..._ArgTypes> 1708function<_Rp(_ArgTypes...)>& 1709function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 1710{ 1711 if (__f_ == (__base*)&__buf_) 1712 __f_->destroy(); 1713 else if (__f_) 1714 __f_->destroy_deallocate(); 1715 __f_ = 0; 1716 if (__f.__f_ == 0) 1717 __f_ = 0; 1718 else if (__f.__f_ == (__base*)&__f.__buf_) 1719 { 1720 __f_ = (__base*)&__buf_; 1721 __f.__f_->__clone(__f_); 1722 } 1723 else 1724 { 1725 __f_ = __f.__f_; 1726 __f.__f_ = 0; 1727 } 1728 return *this; 1729} 1730 1731template<class _Rp, class ..._ArgTypes> 1732function<_Rp(_ArgTypes...)>& 1733function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 1734{ 1735 if (__f_ == (__base*)&__buf_) 1736 __f_->destroy(); 1737 else if (__f_) 1738 __f_->destroy_deallocate(); 1739 __f_ = 0; 1740 return *this; 1741} 1742 1743template<class _Rp, class ..._ArgTypes> 1744template <class _Fp> 1745typename enable_if 1746< 1747 function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value && 1748 !is_same<typename remove_reference<_Fp>::type, function<_Rp(_ArgTypes...)>>::value, 1749 function<_Rp(_ArgTypes...)>& 1750>::type 1751function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 1752{ 1753 function(_VSTD::forward<_Fp>(__f)).swap(*this); 1754 return *this; 1755} 1756 1757template<class _Rp, class ..._ArgTypes> 1758function<_Rp(_ArgTypes...)>::~function() 1759{ 1760 if (__f_ == (__base*)&__buf_) 1761 __f_->destroy(); 1762 else if (__f_) 1763 __f_->destroy_deallocate(); 1764} 1765 1766template<class _Rp, class ..._ArgTypes> 1767void 1768function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 1769{ 1770 if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) 1771 { 1772 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1773 __base* __t = (__base*)&__tempbuf; 1774 __f_->__clone(__t); 1775 __f_->destroy(); 1776 __f_ = 0; 1777 __f.__f_->__clone((__base*)&__buf_); 1778 __f.__f_->destroy(); 1779 __f.__f_ = 0; 1780 __f_ = (__base*)&__buf_; 1781 __t->__clone((__base*)&__f.__buf_); 1782 __t->destroy(); 1783 __f.__f_ = (__base*)&__f.__buf_; 1784 } 1785 else if (__f_ == (__base*)&__buf_) 1786 { 1787 __f_->__clone((__base*)&__f.__buf_); 1788 __f_->destroy(); 1789 __f_ = __f.__f_; 1790 __f.__f_ = (__base*)&__f.__buf_; 1791 } 1792 else if (__f.__f_ == (__base*)&__f.__buf_) 1793 { 1794 __f.__f_->__clone((__base*)&__buf_); 1795 __f.__f_->destroy(); 1796 __f.__f_ = __f_; 1797 __f_ = (__base*)&__buf_; 1798 } 1799 else 1800 _VSTD::swap(__f_, __f.__f_); 1801} 1802 1803template<class _Rp, class ..._ArgTypes> 1804_Rp 1805function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 1806{ 1807#ifndef _LIBCPP_NO_EXCEPTIONS 1808 if (__f_ == 0) 1809 throw bad_function_call(); 1810#endif // _LIBCPP_NO_EXCEPTIONS 1811 return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...); 1812} 1813 1814#ifndef _LIBCPP_NO_RTTI 1815 1816template<class _Rp, class ..._ArgTypes> 1817const std::type_info& 1818function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1819{ 1820 if (__f_ == 0) 1821 return typeid(void); 1822 return __f_->target_type(); 1823} 1824 1825template<class _Rp, class ..._ArgTypes> 1826template <typename _Tp> 1827_Tp* 1828function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 1829{ 1830 if (__f_ == 0) 1831 return (_Tp*)0; 1832 return (_Tp*)__f_->target(typeid(_Tp)); 1833} 1834 1835template<class _Rp, class ..._ArgTypes> 1836template <typename _Tp> 1837const _Tp* 1838function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 1839{ 1840 if (__f_ == 0) 1841 return (const _Tp*)0; 1842 return (const _Tp*)__f_->target(typeid(_Tp)); 1843} 1844 1845#endif // _LIBCPP_NO_RTTI 1846 1847template <class _Rp, class... _ArgTypes> 1848inline _LIBCPP_INLINE_VISIBILITY 1849bool 1850operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 1851 1852template <class _Rp, class... _ArgTypes> 1853inline _LIBCPP_INLINE_VISIBILITY 1854bool 1855operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 1856 1857template <class _Rp, class... _ArgTypes> 1858inline _LIBCPP_INLINE_VISIBILITY 1859bool 1860operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 1861 1862template <class _Rp, class... _ArgTypes> 1863inline _LIBCPP_INLINE_VISIBILITY 1864bool 1865operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 1866 1867template <class _Rp, class... _ArgTypes> 1868inline _LIBCPP_INLINE_VISIBILITY 1869void 1870swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 1871{return __x.swap(__y);} 1872 1873#else // _LIBCPP_HAS_NO_VARIADICS 1874 1875#include <__functional_03> 1876 1877#endif 1878 1879//////////////////////////////////////////////////////////////////////////////// 1880// BIND 1881//============================================================================== 1882 1883template<class _Tp> struct __is_bind_expression : public false_type {}; 1884template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_bind_expression 1885 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 1886 1887template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 1888template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_placeholder 1889 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 1890 1891namespace placeholders 1892{ 1893 1894template <int _Np> struct __ph {}; 1895 1896_LIBCPP_FUNC_VIS extern __ph<1> _1; 1897_LIBCPP_FUNC_VIS extern __ph<2> _2; 1898_LIBCPP_FUNC_VIS extern __ph<3> _3; 1899_LIBCPP_FUNC_VIS extern __ph<4> _4; 1900_LIBCPP_FUNC_VIS extern __ph<5> _5; 1901_LIBCPP_FUNC_VIS extern __ph<6> _6; 1902_LIBCPP_FUNC_VIS extern __ph<7> _7; 1903_LIBCPP_FUNC_VIS extern __ph<8> _8; 1904_LIBCPP_FUNC_VIS extern __ph<9> _9; 1905_LIBCPP_FUNC_VIS extern __ph<10> _10; 1906 1907} // placeholders 1908 1909template<int _Np> 1910struct __is_placeholder<placeholders::__ph<_Np> > 1911 : public integral_constant<int, _Np> {}; 1912 1913 1914#ifndef _LIBCPP_HAS_NO_VARIADICS 1915 1916template <class _Tp, class _Uj> 1917inline _LIBCPP_INLINE_VISIBILITY 1918_Tp& 1919__mu(reference_wrapper<_Tp> __t, _Uj&) 1920{ 1921 return __t.get(); 1922} 1923 1924template <class _Ti, class ..._Uj, size_t ..._Indx> 1925inline _LIBCPP_INLINE_VISIBILITY 1926typename __invoke_of<_Ti&, _Uj...>::type 1927__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 1928{ 1929 return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); 1930} 1931 1932template <class _Ti, class ..._Uj> 1933inline _LIBCPP_INLINE_VISIBILITY 1934typename __lazy_enable_if 1935< 1936 is_bind_expression<_Ti>::value, 1937 __invoke_of<_Ti&, _Uj...> 1938>::type 1939__mu(_Ti& __ti, tuple<_Uj...>& __uj) 1940{ 1941 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 1942 return __mu_expand(__ti, __uj, __indices()); 1943} 1944 1945template <bool IsPh, class _Ti, class _Uj> 1946struct __mu_return2 {}; 1947 1948template <class _Ti, class _Uj> 1949struct __mu_return2<true, _Ti, _Uj> 1950{ 1951 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 1952}; 1953 1954template <class _Ti, class _Uj> 1955inline _LIBCPP_INLINE_VISIBILITY 1956typename enable_if 1957< 1958 0 < is_placeholder<_Ti>::value, 1959 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 1960>::type 1961__mu(_Ti&, _Uj& __uj) 1962{ 1963 const size_t _Indx = is_placeholder<_Ti>::value - 1; 1964 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj)); 1965} 1966 1967template <class _Ti, class _Uj> 1968inline _LIBCPP_INLINE_VISIBILITY 1969typename enable_if 1970< 1971 !is_bind_expression<_Ti>::value && 1972 is_placeholder<_Ti>::value == 0 && 1973 !__is_reference_wrapper<_Ti>::value, 1974 _Ti& 1975>::type 1976__mu(_Ti& __ti, _Uj&) 1977{ 1978 return __ti; 1979} 1980 1981template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 1982 class _TupleUj> 1983struct ____mu_return; 1984 1985template <bool _Invokable, class _Ti, class ..._Uj> 1986struct ____mu_return_invokable // false 1987{ 1988 typedef __nat type; 1989}; 1990 1991template <class _Ti, class ..._Uj> 1992struct ____mu_return_invokable<true, _Ti, _Uj...> 1993{ 1994 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 1995}; 1996 1997template <class _Ti, class ..._Uj> 1998struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> > 1999 : public ____mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> 2000{ 2001}; 2002 2003template <class _Ti, class _TupleUj> 2004struct ____mu_return<_Ti, false, false, true, _TupleUj> 2005{ 2006 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 2007 _TupleUj>::type&& type; 2008}; 2009 2010template <class _Ti, class _TupleUj> 2011struct ____mu_return<_Ti, true, false, false, _TupleUj> 2012{ 2013 typedef typename _Ti::type& type; 2014}; 2015 2016template <class _Ti, class _TupleUj> 2017struct ____mu_return<_Ti, false, false, false, _TupleUj> 2018{ 2019 typedef _Ti& type; 2020}; 2021 2022template <class _Ti, class _TupleUj> 2023struct __mu_return 2024 : public ____mu_return<_Ti, 2025 __is_reference_wrapper<_Ti>::value, 2026 is_bind_expression<_Ti>::value, 2027 0 < is_placeholder<_Ti>::value && 2028 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, 2029 _TupleUj> 2030{ 2031}; 2032 2033template <class _Fp, class _BoundArgs, class _TupleUj> 2034struct __is_valid_bind_return 2035{ 2036 static const bool value = false; 2037}; 2038 2039template <class _Fp, class ..._BoundArgs, class _TupleUj> 2040struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 2041{ 2042 static const bool value = __invokable<_Fp, 2043 typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; 2044}; 2045 2046template <class _Fp, class ..._BoundArgs, class _TupleUj> 2047struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 2048{ 2049 static const bool value = __invokable<_Fp, 2050 typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value; 2051}; 2052 2053template <class _Fp, class _BoundArgs, class _TupleUj, 2054 bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value> 2055struct __bind_return; 2056 2057template <class _Fp, class ..._BoundArgs, class _TupleUj> 2058struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> 2059{ 2060 typedef typename __invoke_of 2061 < 2062 _Fp&, 2063 typename __mu_return 2064 < 2065 _BoundArgs, 2066 _TupleUj 2067 >::type... 2068 >::type type; 2069}; 2070 2071template <class _Fp, class ..._BoundArgs, class _TupleUj> 2072struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> 2073{ 2074 typedef typename __invoke_of 2075 < 2076 _Fp&, 2077 typename __mu_return 2078 < 2079 const _BoundArgs, 2080 _TupleUj 2081 >::type... 2082 >::type type; 2083}; 2084 2085template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 2086inline _LIBCPP_INLINE_VISIBILITY 2087typename __bind_return<_Fp, _BoundArgs, _Args>::type 2088__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 2089 _Args&& __args) 2090{ 2091 return __invoke(__f, __mu(_VSTD::get<_Indx>(__bound_args), __args)...); 2092} 2093 2094template<class _Fp, class ..._BoundArgs> 2095class __bind 2096 : public __weak_result_type<typename decay<_Fp>::type> 2097{ 2098protected: 2099 typedef typename decay<_Fp>::type _Fd; 2100 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 2101private: 2102 _Fd __f_; 2103 _Td __bound_args_; 2104 2105 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 2106public: 2107#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2108 2109 _LIBCPP_INLINE_VISIBILITY 2110 __bind(const __bind& __b) 2111 : __f_(__b.__f_), 2112 __bound_args_(__b.__bound_args_) {} 2113 2114 _LIBCPP_INLINE_VISIBILITY 2115 __bind& operator=(const __bind& __b) 2116 { 2117 __f_ = __b.__f_; 2118 __bound_args_ = __b.__bound_args_; 2119 return *this; 2120 } 2121 2122 _LIBCPP_INLINE_VISIBILITY 2123 __bind(__bind&& __b) 2124 : __f_(_VSTD::move(__b.__f_)), 2125 __bound_args_(_VSTD::move(__b.__bound_args_)) {} 2126 2127 _LIBCPP_INLINE_VISIBILITY 2128 __bind& operator=(__bind&& __b) 2129 { 2130 __f_ = _VSTD::move(__b.__f_); 2131 __bound_args_ = _VSTD::move(__b.__bound_args_); 2132 return *this; 2133 } 2134 2135#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2136 2137 template <class _Gp, class ..._BA, 2138 class = typename enable_if 2139 < 2140 is_constructible<_Fd, _Gp>::value && 2141 !is_same<typename remove_reference<_Gp>::type, 2142 __bind>::value 2143 >::type> 2144 _LIBCPP_INLINE_VISIBILITY 2145 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 2146 : __f_(_VSTD::forward<_Gp>(__f)), 2147 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 2148 2149 template <class ..._Args> 2150 _LIBCPP_INLINE_VISIBILITY 2151 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 2152 operator()(_Args&& ...__args) 2153 { 2154 return __apply_functor(__f_, __bound_args_, __indices(), 2155 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2156 } 2157 2158 template <class ..._Args> 2159 _LIBCPP_INLINE_VISIBILITY 2160 typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type 2161 operator()(_Args&& ...__args) const 2162 { 2163 return __apply_functor(__f_, __bound_args_, __indices(), 2164 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2165 } 2166}; 2167 2168template<class _Fp, class ..._BoundArgs> 2169struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 2170 2171template<class _Rp, class _Fp, class ..._BoundArgs> 2172class __bind_r 2173 : public __bind<_Fp, _BoundArgs...> 2174{ 2175 typedef __bind<_Fp, _BoundArgs...> base; 2176 typedef typename base::_Fd _Fd; 2177 typedef typename base::_Td _Td; 2178public: 2179 typedef _Rp result_type; 2180 2181#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2182 2183 _LIBCPP_INLINE_VISIBILITY 2184 __bind_r(const __bind_r& __b) 2185 : base(_VSTD::forward<const base&>(__b)) {} 2186 2187 _LIBCPP_INLINE_VISIBILITY 2188 __bind_r& operator=(const __bind_r& __b) 2189 { 2190 base::operator=(_VSTD::forward<const base&>(__b)); 2191 return *this; 2192 } 2193 2194 _LIBCPP_INLINE_VISIBILITY 2195 __bind_r(__bind_r&& __b) 2196 : base(_VSTD::forward<base>(__b)) {} 2197 2198 _LIBCPP_INLINE_VISIBILITY 2199 __bind_r& operator=(__bind_r&& __b) 2200 { 2201 base::operator=(_VSTD::forward<base>(__b)); 2202 return *this; 2203 } 2204 2205#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2206 2207 template <class _Gp, class ..._BA, 2208 class = typename enable_if 2209 < 2210 is_constructible<_Fd, _Gp>::value && 2211 !is_same<typename remove_reference<_Gp>::type, 2212 __bind_r>::value 2213 >::type> 2214 _LIBCPP_INLINE_VISIBILITY 2215 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 2216 : base(_VSTD::forward<_Gp>(__f), 2217 _VSTD::forward<_BA>(__bound_args)...) {} 2218 2219 template <class ..._Args> 2220 _LIBCPP_INLINE_VISIBILITY 2221 typename enable_if 2222 < 2223 is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, 2224 result_type>::value || is_void<_Rp>::value, 2225 result_type 2226 >::type 2227 operator()(_Args&& ...__args) 2228 { 2229 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2230 return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); 2231 } 2232 2233 template <class ..._Args> 2234 _LIBCPP_INLINE_VISIBILITY 2235 typename enable_if 2236 < 2237 is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, 2238 result_type>::value || is_void<_Rp>::value, 2239 result_type 2240 >::type 2241 operator()(_Args&& ...__args) const 2242 { 2243 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2244 return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); 2245 } 2246}; 2247 2248template<class _Rp, class _Fp, class ..._BoundArgs> 2249struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 2250 2251template<class _Fp, class ..._BoundArgs> 2252inline _LIBCPP_INLINE_VISIBILITY 2253__bind<_Fp, _BoundArgs...> 2254bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2255{ 2256 typedef __bind<_Fp, _BoundArgs...> type; 2257 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2258} 2259 2260template<class _Rp, class _Fp, class ..._BoundArgs> 2261inline _LIBCPP_INLINE_VISIBILITY 2262__bind_r<_Rp, _Fp, _BoundArgs...> 2263bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2264{ 2265 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 2266 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2267} 2268 2269#endif // _LIBCPP_HAS_NO_VARIADICS 2270 2271template <> 2272struct _LIBCPP_TYPE_VIS_ONLY hash<bool> 2273 : public unary_function<bool, size_t> 2274{ 2275 _LIBCPP_INLINE_VISIBILITY 2276 size_t operator()(bool __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2277}; 2278 2279template <> 2280struct _LIBCPP_TYPE_VIS_ONLY hash<char> 2281 : public unary_function<char, size_t> 2282{ 2283 _LIBCPP_INLINE_VISIBILITY 2284 size_t operator()(char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2285}; 2286 2287template <> 2288struct _LIBCPP_TYPE_VIS_ONLY hash<signed char> 2289 : public unary_function<signed char, size_t> 2290{ 2291 _LIBCPP_INLINE_VISIBILITY 2292 size_t operator()(signed char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2293}; 2294 2295template <> 2296struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned char> 2297 : public unary_function<unsigned char, size_t> 2298{ 2299 _LIBCPP_INLINE_VISIBILITY 2300 size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2301}; 2302 2303#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 2304 2305template <> 2306struct _LIBCPP_TYPE_VIS_ONLY hash<char16_t> 2307 : public unary_function<char16_t, size_t> 2308{ 2309 _LIBCPP_INLINE_VISIBILITY 2310 size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2311}; 2312 2313template <> 2314struct _LIBCPP_TYPE_VIS_ONLY hash<char32_t> 2315 : public unary_function<char32_t, size_t> 2316{ 2317 _LIBCPP_INLINE_VISIBILITY 2318 size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2319}; 2320 2321#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 2322 2323template <> 2324struct _LIBCPP_TYPE_VIS_ONLY hash<wchar_t> 2325 : public unary_function<wchar_t, size_t> 2326{ 2327 _LIBCPP_INLINE_VISIBILITY 2328 size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2329}; 2330 2331template <> 2332struct _LIBCPP_TYPE_VIS_ONLY hash<short> 2333 : public unary_function<short, size_t> 2334{ 2335 _LIBCPP_INLINE_VISIBILITY 2336 size_t operator()(short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2337}; 2338 2339template <> 2340struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned short> 2341 : public unary_function<unsigned short, size_t> 2342{ 2343 _LIBCPP_INLINE_VISIBILITY 2344 size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2345}; 2346 2347template <> 2348struct _LIBCPP_TYPE_VIS_ONLY hash<int> 2349 : public unary_function<int, size_t> 2350{ 2351 _LIBCPP_INLINE_VISIBILITY 2352 size_t operator()(int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2353}; 2354 2355template <> 2356struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned int> 2357 : public unary_function<unsigned int, size_t> 2358{ 2359 _LIBCPP_INLINE_VISIBILITY 2360 size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2361}; 2362 2363template <> 2364struct _LIBCPP_TYPE_VIS_ONLY hash<long> 2365 : public unary_function<long, size_t> 2366{ 2367 _LIBCPP_INLINE_VISIBILITY 2368 size_t operator()(long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2369}; 2370 2371template <> 2372struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long> 2373 : public unary_function<unsigned long, size_t> 2374{ 2375 _LIBCPP_INLINE_VISIBILITY 2376 size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2377}; 2378 2379template <> 2380struct _LIBCPP_TYPE_VIS_ONLY hash<long long> 2381 : public __scalar_hash<long long> 2382{ 2383}; 2384 2385template <> 2386struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long long> 2387 : public __scalar_hash<unsigned long long> 2388{ 2389}; 2390 2391template <> 2392struct _LIBCPP_TYPE_VIS_ONLY hash<float> 2393 : public __scalar_hash<float> 2394{ 2395 _LIBCPP_INLINE_VISIBILITY 2396 size_t operator()(float __v) const _NOEXCEPT 2397 { 2398 // -0.0 and 0.0 should return same hash 2399 if (__v == 0) 2400 return 0; 2401 return __scalar_hash<float>::operator()(__v); 2402 } 2403}; 2404 2405template <> 2406struct _LIBCPP_TYPE_VIS_ONLY hash<double> 2407 : public __scalar_hash<double> 2408{ 2409 _LIBCPP_INLINE_VISIBILITY 2410 size_t operator()(double __v) const _NOEXCEPT 2411 { 2412 // -0.0 and 0.0 should return same hash 2413 if (__v == 0) 2414 return 0; 2415 return __scalar_hash<double>::operator()(__v); 2416 } 2417}; 2418 2419template <> 2420struct _LIBCPP_TYPE_VIS_ONLY hash<long double> 2421 : public __scalar_hash<long double> 2422{ 2423 _LIBCPP_INLINE_VISIBILITY 2424 size_t operator()(long double __v) const _NOEXCEPT 2425 { 2426 // -0.0 and 0.0 should return same hash 2427 if (__v == 0) 2428 return 0; 2429#if defined(__i386__) 2430 // Zero out padding bits 2431 union 2432 { 2433 long double __t; 2434 struct 2435 { 2436 size_t __a; 2437 size_t __b; 2438 size_t __c; 2439 size_t __d; 2440 } __s; 2441 } __u; 2442 __u.__s.__a = 0; 2443 __u.__s.__b = 0; 2444 __u.__s.__c = 0; 2445 __u.__s.__d = 0; 2446 __u.__t = __v; 2447 return __u.__s.__a ^ __u.__s.__b ^ __u.__s.__c ^ __u.__s.__d; 2448#elif defined(__x86_64__) 2449 // Zero out padding bits 2450 union 2451 { 2452 long double __t; 2453 struct 2454 { 2455 size_t __a; 2456 size_t __b; 2457 } __s; 2458 } __u; 2459 __u.__s.__a = 0; 2460 __u.__s.__b = 0; 2461 __u.__t = __v; 2462 return __u.__s.__a ^ __u.__s.__b; 2463#else 2464 return __scalar_hash<long double>::operator()(__v); 2465#endif 2466 } 2467}; 2468 2469#if _LIBCPP_STD_VER > 11 2470template <class _Tp> 2471struct _LIBCPP_TYPE_VIS_ONLY hash 2472 : public unary_function<_Tp, size_t> 2473{ 2474 static_assert(is_enum<_Tp>::value, "This hash only works for enumeration types"); 2475 2476 _LIBCPP_INLINE_VISIBILITY 2477 size_t operator()(_Tp __v) const _NOEXCEPT 2478 { 2479 typedef typename underlying_type<_Tp>::type type; 2480 return hash<type>{}(static_cast<type>(__v)); 2481 } 2482}; 2483#endif 2484 2485 2486#if _LIBCPP_STD_VER > 14 2487template <class _Fn, class ..._Args> 2488result_of_t<_Fn&&(_Args&&...)> 2489invoke(_Fn&& __f, _Args&&... __args) { 2490 return __invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); 2491} 2492#endif 2493 2494// struct hash<T*> in <memory> 2495 2496_LIBCPP_END_NAMESPACE_STD 2497 2498#endif // _LIBCPP_FUNCTIONAL 2499