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> struct unwrap_reference; // since C++20 72template <class T> struct unwrap_ref_decay : unwrap_reference<decay_t<T>> { }; // since C++20 73template <class T> using unwrap_reference_t = typename unwrap_reference<T>::type; // since C++20 74template <class T> using unwrap_ref_decay_t = typename unwrap_ref_decay<T>::type; // since C++20 75 76template <class T> // <class T=void> in C++14 77struct plus : binary_function<T, T, T> 78{ 79 T operator()(const T& x, const T& y) const; 80}; 81 82template <class T> // <class T=void> in C++14 83struct minus : binary_function<T, T, T> 84{ 85 T operator()(const T& x, const T& y) const; 86}; 87 88template <class T> // <class T=void> in C++14 89struct multiplies : binary_function<T, T, T> 90{ 91 T operator()(const T& x, const T& y) const; 92}; 93 94template <class T> // <class T=void> in C++14 95struct divides : binary_function<T, T, T> 96{ 97 T operator()(const T& x, const T& y) const; 98}; 99 100template <class T> // <class T=void> in C++14 101struct modulus : binary_function<T, T, T> 102{ 103 T operator()(const T& x, const T& y) const; 104}; 105 106template <class T> // <class T=void> in C++14 107struct negate : unary_function<T, T> 108{ 109 T operator()(const T& x) const; 110}; 111 112template <class T> // <class T=void> in C++14 113struct equal_to : binary_function<T, T, bool> 114{ 115 bool operator()(const T& x, const T& y) const; 116}; 117 118template <class T> // <class T=void> in C++14 119struct not_equal_to : binary_function<T, T, bool> 120{ 121 bool operator()(const T& x, const T& y) const; 122}; 123 124template <class T> // <class T=void> in C++14 125struct greater : binary_function<T, T, bool> 126{ 127 bool operator()(const T& x, const T& y) const; 128}; 129 130template <class T> // <class T=void> in C++14 131struct less : binary_function<T, T, bool> 132{ 133 bool operator()(const T& x, const T& y) const; 134}; 135 136template <class T> // <class T=void> in C++14 137struct greater_equal : binary_function<T, T, bool> 138{ 139 bool operator()(const T& x, const T& y) const; 140}; 141 142template <class T> // <class T=void> in C++14 143struct less_equal : binary_function<T, T, bool> 144{ 145 bool operator()(const T& x, const T& y) const; 146}; 147 148template <class T> // <class T=void> in C++14 149struct logical_and : binary_function<T, T, bool> 150{ 151 bool operator()(const T& x, const T& y) const; 152}; 153 154template <class T> // <class T=void> in C++14 155struct logical_or : binary_function<T, T, bool> 156{ 157 bool operator()(const T& x, const T& y) const; 158}; 159 160template <class T> // <class T=void> in C++14 161struct logical_not : unary_function<T, bool> 162{ 163 bool operator()(const T& x) const; 164}; 165 166template <class T> // <class T=void> in C++14 167struct bit_and : unary_function<T, bool> 168{ 169 bool operator()(const T& x, const T& y) const; 170}; 171 172template <class T> // <class T=void> in C++14 173struct bit_or : unary_function<T, bool> 174{ 175 bool operator()(const T& x, const T& y) const; 176}; 177 178template <class T> // <class T=void> in C++14 179struct bit_xor : unary_function<T, bool> 180{ 181 bool operator()(const T& x, const T& y) const; 182}; 183 184template <class T=void> // C++14 185struct bit_xor : unary_function<T, bool> 186{ 187 bool operator()(const T& x) const; 188}; 189 190template <class Predicate> 191class unary_negate // deprecated in C++17 192 : public unary_function<typename Predicate::argument_type, bool> 193{ 194public: 195 explicit unary_negate(const Predicate& pred); 196 bool operator()(const typename Predicate::argument_type& x) const; 197}; 198 199template <class Predicate> // deprecated in C++17 200unary_negate<Predicate> not1(const Predicate& pred); 201 202template <class Predicate> 203class binary_negate // deprecated in C++17 204 : public binary_function<typename Predicate::first_argument_type, 205 typename Predicate::second_argument_type, 206 bool> 207{ 208public: 209 explicit binary_negate(const Predicate& pred); 210 bool operator()(const typename Predicate::first_argument_type& x, 211 const typename Predicate::second_argument_type& y) const; 212}; 213 214template <class Predicate> // deprecated in C++17 215binary_negate<Predicate> not2(const Predicate& pred); 216 217template <class F> unspecified not_fn(F&& f); // C++17 218 219template<class T> struct is_bind_expression; 220template<class T> struct is_placeholder; 221 222 // See C++14 20.9.9, Function object binders 223template <class T> inline constexpr bool is_bind_expression_v 224 = is_bind_expression<T>::value; // C++17 225template <class T> inline constexpr int is_placeholder_v 226 = is_placeholder<T>::value; // C++17 227 228 229template<class Fn, class... BoundArgs> 230 unspecified bind(Fn&&, BoundArgs&&...); 231template<class R, class Fn, class... BoundArgs> 232 unspecified bind(Fn&&, BoundArgs&&...); 233 234namespace placeholders { 235 // M is the implementation-defined number of placeholders 236 extern unspecified _1; 237 extern unspecified _2; 238 . 239 . 240 . 241 extern unspecified _Mp; 242} 243 244template <class Operation> 245class binder1st // deprecated in C++11, removed in C++17 246 : public unary_function<typename Operation::second_argument_type, 247 typename Operation::result_type> 248{ 249protected: 250 Operation op; 251 typename Operation::first_argument_type value; 252public: 253 binder1st(const Operation& x, const typename Operation::first_argument_type y); 254 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 255 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 256}; 257 258template <class Operation, class T> 259binder1st<Operation> bind1st(const Operation& op, const T& x); // deprecated in C++11, removed in C++17 260 261template <class Operation> 262class binder2nd // deprecated in C++11, removed in C++17 263 : public unary_function<typename Operation::first_argument_type, 264 typename Operation::result_type> 265{ 266protected: 267 Operation op; 268 typename Operation::second_argument_type value; 269public: 270 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 271 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 272 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 273}; 274 275template <class Operation, class T> 276binder2nd<Operation> bind2nd(const Operation& op, const T& x); // deprecated in C++11, removed in C++17 277 278template <class Arg, class Result> // deprecated in C++11, removed in C++17 279class pointer_to_unary_function : public unary_function<Arg, Result> 280{ 281public: 282 explicit pointer_to_unary_function(Result (*f)(Arg)); 283 Result operator()(Arg x) const; 284}; 285 286template <class Arg, class Result> 287pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); // deprecated in C++11, removed in C++17 288 289template <class Arg1, class Arg2, class Result> // deprecated in C++11, removed in C++17 290class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 291{ 292public: 293 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 294 Result operator()(Arg1 x, Arg2 y) const; 295}; 296 297template <class Arg1, class Arg2, class Result> 298pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); // deprecated in C++11, removed in C++17 299 300template<class S, class T> // deprecated in C++11, removed in C++17 301class mem_fun_t : public unary_function<T*, S> 302{ 303public: 304 explicit mem_fun_t(S (T::*p)()); 305 S operator()(T* p) const; 306}; 307 308template<class S, class T, class A> 309class mem_fun1_t : public binary_function<T*, A, S> // deprecated in C++11, removed in C++17 310{ 311public: 312 explicit mem_fun1_t(S (T::*p)(A)); 313 S operator()(T* p, A x) const; 314}; 315 316template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); // deprecated in C++11, removed in C++17 317template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); // deprecated in C++11, removed in C++17 318 319template<class S, class T> 320class mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17 321{ 322public: 323 explicit mem_fun_ref_t(S (T::*p)()); 324 S operator()(T& p) const; 325}; 326 327template<class S, class T, class A> 328class mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17 329{ 330public: 331 explicit mem_fun1_ref_t(S (T::*p)(A)); 332 S operator()(T& p, A x) const; 333}; 334 335template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); // deprecated in C++11, removed in C++17 336template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); // deprecated in C++11, removed in C++17 337 338template <class S, class T> 339class const_mem_fun_t : public unary_function<const T*, S> // deprecated in C++11, removed in C++17 340{ 341public: 342 explicit const_mem_fun_t(S (T::*p)() const); 343 S operator()(const T* p) const; 344}; 345 346template <class S, class T, class A> 347class const_mem_fun1_t : public binary_function<const T*, A, S> // deprecated in C++11, removed in C++17 348{ 349public: 350 explicit const_mem_fun1_t(S (T::*p)(A) const); 351 S operator()(const T* p, A x) const; 352}; 353 354template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); // deprecated in C++11, removed in C++17 355template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); // deprecated in C++11, removed in C++17 356 357template <class S, class T> 358class const_mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17 359{ 360public: 361 explicit const_mem_fun_ref_t(S (T::*p)() const); 362 S operator()(const T& p) const; 363}; 364 365template <class S, class T, class A> 366class const_mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17 367{ 368public: 369 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 370 S operator()(const T& p, A x) const; 371}; 372 373template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); // deprecated in C++11, removed in C++17 374template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); // deprecated in C++11, removed in C++17 375 376template<class R, class T> unspecified mem_fn(R T::*); 377 378class bad_function_call 379 : public exception 380{ 381}; 382 383template<class> class function; // undefined 384 385template<class R, class... ArgTypes> 386class function<R(ArgTypes...)> 387 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 388 // ArgTypes contains T1 389 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 390 // ArgTypes contains T1 and T2 391{ 392public: 393 typedef R result_type; 394 395 // construct/copy/destroy: 396 function() noexcept; 397 function(nullptr_t) noexcept; 398 function(const function&); 399 function(function&&) noexcept; 400 template<class F> 401 function(F); 402 template<Allocator Alloc> 403 function(allocator_arg_t, const Alloc&) noexcept; // removed in C++17 404 template<Allocator Alloc> 405 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; // removed in C++17 406 template<Allocator Alloc> 407 function(allocator_arg_t, const Alloc&, const function&); // removed in C++17 408 template<Allocator Alloc> 409 function(allocator_arg_t, const Alloc&, function&&); // removed in C++17 410 template<class F, Allocator Alloc> 411 function(allocator_arg_t, const Alloc&, F); // removed in C++17 412 413 function& operator=(const function&); 414 function& operator=(function&&) noexcept; 415 function& operator=(nullptr_t) noexcept; 416 template<class F> 417 function& operator=(F&&); 418 template<class F> 419 function& operator=(reference_wrapper<F>) noexcept; 420 421 ~function(); 422 423 // function modifiers: 424 void swap(function&) noexcept; 425 template<class F, class Alloc> 426 void assign(F&&, const Alloc&); // Removed in C++17 427 428 // function capacity: 429 explicit operator bool() const noexcept; 430 431 // function invocation: 432 R operator()(ArgTypes...) const; 433 434 // function target access: 435 const std::type_info& target_type() const noexcept; 436 template <typename T> T* target() noexcept; 437 template <typename T> const T* target() const noexcept; 438}; 439 440// Null pointer comparisons: 441template <class R, class ... ArgTypes> 442 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 443 444template <class R, class ... ArgTypes> 445 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 446 447template <class R, class ... ArgTypes> 448 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 449 450template <class R, class ... ArgTypes> 451 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 452 453// specialized algorithms: 454template <class R, class ... ArgTypes> 455 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 456 457template <class T> struct hash; 458 459template <> struct hash<bool>; 460template <> struct hash<char>; 461template <> struct hash<signed char>; 462template <> struct hash<unsigned char>; 463template <> struct hash<char16_t>; 464template <> struct hash<char32_t>; 465template <> struct hash<wchar_t>; 466template <> struct hash<short>; 467template <> struct hash<unsigned short>; 468template <> struct hash<int>; 469template <> struct hash<unsigned int>; 470template <> struct hash<long>; 471template <> struct hash<long long>; 472template <> struct hash<unsigned long>; 473template <> struct hash<unsigned long long>; 474 475template <> struct hash<float>; 476template <> struct hash<double>; 477template <> struct hash<long double>; 478 479template<class T> struct hash<T*>; 480template <> struct hash<nullptr_t>; // C++17 481 482} // std 483 484POLICY: For non-variadic implementations, the number of arguments is limited 485 to 3. It is hoped that the need for non-variadic implementations 486 will be minimal. 487 488*/ 489 490#include <__config> 491#include <type_traits> 492#include <typeinfo> 493#include <exception> 494#include <memory> 495#include <tuple> 496#include <utility> 497#include <version> 498 499#include <__functional_base> 500 501#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 502#pragma GCC system_header 503#endif 504 505_LIBCPP_BEGIN_NAMESPACE_STD 506 507#if _LIBCPP_STD_VER > 11 508template <class _Tp = void> 509#else 510template <class _Tp> 511#endif 512struct _LIBCPP_TEMPLATE_VIS plus : binary_function<_Tp, _Tp, _Tp> 513{ 514 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 515 _Tp operator()(const _Tp& __x, const _Tp& __y) const 516 {return __x + __y;} 517}; 518 519#if _LIBCPP_STD_VER > 11 520template <> 521struct _LIBCPP_TEMPLATE_VIS plus<void> 522{ 523 template <class _T1, class _T2> 524 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 525 auto operator()(_T1&& __t, _T2&& __u) const 526 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 527 -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 528 { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 529 typedef void is_transparent; 530}; 531#endif 532 533 534#if _LIBCPP_STD_VER > 11 535template <class _Tp = void> 536#else 537template <class _Tp> 538#endif 539struct _LIBCPP_TEMPLATE_VIS minus : binary_function<_Tp, _Tp, _Tp> 540{ 541 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 542 _Tp operator()(const _Tp& __x, const _Tp& __y) const 543 {return __x - __y;} 544}; 545 546#if _LIBCPP_STD_VER > 11 547template <> 548struct _LIBCPP_TEMPLATE_VIS minus<void> 549{ 550 template <class _T1, class _T2> 551 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 552 auto operator()(_T1&& __t, _T2&& __u) const 553 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) 554 -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) 555 { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } 556 typedef void is_transparent; 557}; 558#endif 559 560 561#if _LIBCPP_STD_VER > 11 562template <class _Tp = void> 563#else 564template <class _Tp> 565#endif 566struct _LIBCPP_TEMPLATE_VIS multiplies : binary_function<_Tp, _Tp, _Tp> 567{ 568 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 569 _Tp operator()(const _Tp& __x, const _Tp& __y) const 570 {return __x * __y;} 571}; 572 573#if _LIBCPP_STD_VER > 11 574template <> 575struct _LIBCPP_TEMPLATE_VIS multiplies<void> 576{ 577 template <class _T1, class _T2> 578 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 579 auto operator()(_T1&& __t, _T2&& __u) const 580 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) 581 -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) 582 { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } 583 typedef void is_transparent; 584}; 585#endif 586 587 588#if _LIBCPP_STD_VER > 11 589template <class _Tp = void> 590#else 591template <class _Tp> 592#endif 593struct _LIBCPP_TEMPLATE_VIS divides : binary_function<_Tp, _Tp, _Tp> 594{ 595 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 596 _Tp operator()(const _Tp& __x, const _Tp& __y) const 597 {return __x / __y;} 598}; 599 600#if _LIBCPP_STD_VER > 11 601template <> 602struct _LIBCPP_TEMPLATE_VIS divides<void> 603{ 604 template <class _T1, class _T2> 605 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 606 auto operator()(_T1&& __t, _T2&& __u) const 607 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) 608 -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) 609 { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } 610 typedef void is_transparent; 611}; 612#endif 613 614 615#if _LIBCPP_STD_VER > 11 616template <class _Tp = void> 617#else 618template <class _Tp> 619#endif 620struct _LIBCPP_TEMPLATE_VIS modulus : binary_function<_Tp, _Tp, _Tp> 621{ 622 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 623 _Tp operator()(const _Tp& __x, const _Tp& __y) const 624 {return __x % __y;} 625}; 626 627#if _LIBCPP_STD_VER > 11 628template <> 629struct _LIBCPP_TEMPLATE_VIS modulus<void> 630{ 631 template <class _T1, class _T2> 632 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 633 auto operator()(_T1&& __t, _T2&& __u) const 634 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) 635 -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) 636 { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } 637 typedef void is_transparent; 638}; 639#endif 640 641 642#if _LIBCPP_STD_VER > 11 643template <class _Tp = void> 644#else 645template <class _Tp> 646#endif 647struct _LIBCPP_TEMPLATE_VIS negate : unary_function<_Tp, _Tp> 648{ 649 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 650 _Tp operator()(const _Tp& __x) const 651 {return -__x;} 652}; 653 654#if _LIBCPP_STD_VER > 11 655template <> 656struct _LIBCPP_TEMPLATE_VIS negate<void> 657{ 658 template <class _Tp> 659 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 660 auto operator()(_Tp&& __x) const 661 _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) 662 -> decltype (- _VSTD::forward<_Tp>(__x)) 663 { return - _VSTD::forward<_Tp>(__x); } 664 typedef void is_transparent; 665}; 666#endif 667 668 669#if _LIBCPP_STD_VER > 11 670template <class _Tp = void> 671#else 672template <class _Tp> 673#endif 674struct _LIBCPP_TEMPLATE_VIS equal_to : binary_function<_Tp, _Tp, bool> 675{ 676 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 677 bool operator()(const _Tp& __x, const _Tp& __y) const 678 {return __x == __y;} 679}; 680 681#if _LIBCPP_STD_VER > 11 682template <> 683struct _LIBCPP_TEMPLATE_VIS equal_to<void> 684{ 685 template <class _T1, class _T2> 686 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 687 auto operator()(_T1&& __t, _T2&& __u) const 688 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) 689 -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) 690 { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } 691 typedef void is_transparent; 692}; 693#endif 694 695 696#if _LIBCPP_STD_VER > 11 697template <class _Tp = void> 698#else 699template <class _Tp> 700#endif 701struct _LIBCPP_TEMPLATE_VIS not_equal_to : binary_function<_Tp, _Tp, bool> 702{ 703 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 704 bool operator()(const _Tp& __x, const _Tp& __y) const 705 {return __x != __y;} 706}; 707 708#if _LIBCPP_STD_VER > 11 709template <> 710struct _LIBCPP_TEMPLATE_VIS not_equal_to<void> 711{ 712 template <class _T1, class _T2> 713 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 714 auto operator()(_T1&& __t, _T2&& __u) const 715 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) 716 -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) 717 { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } 718 typedef void is_transparent; 719}; 720#endif 721 722 723#if _LIBCPP_STD_VER > 11 724template <class _Tp = void> 725#else 726template <class _Tp> 727#endif 728struct _LIBCPP_TEMPLATE_VIS greater : binary_function<_Tp, _Tp, bool> 729{ 730 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 731 bool operator()(const _Tp& __x, const _Tp& __y) const 732 {return __x > __y;} 733}; 734 735#if _LIBCPP_STD_VER > 11 736template <> 737struct _LIBCPP_TEMPLATE_VIS greater<void> 738{ 739 template <class _T1, class _T2> 740 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 741 auto operator()(_T1&& __t, _T2&& __u) const 742 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) 743 -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) 744 { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } 745 typedef void is_transparent; 746}; 747#endif 748 749 750// less in <__functional_base> 751 752#if _LIBCPP_STD_VER > 11 753template <class _Tp = void> 754#else 755template <class _Tp> 756#endif 757struct _LIBCPP_TEMPLATE_VIS greater_equal : binary_function<_Tp, _Tp, bool> 758{ 759 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 760 bool operator()(const _Tp& __x, const _Tp& __y) const 761 {return __x >= __y;} 762}; 763 764#if _LIBCPP_STD_VER > 11 765template <> 766struct _LIBCPP_TEMPLATE_VIS greater_equal<void> 767{ 768 template <class _T1, class _T2> 769 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 770 auto operator()(_T1&& __t, _T2&& __u) const 771 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) 772 -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) 773 { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } 774 typedef void is_transparent; 775}; 776#endif 777 778 779#if _LIBCPP_STD_VER > 11 780template <class _Tp = void> 781#else 782template <class _Tp> 783#endif 784struct _LIBCPP_TEMPLATE_VIS less_equal : binary_function<_Tp, _Tp, bool> 785{ 786 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 787 bool operator()(const _Tp& __x, const _Tp& __y) const 788 {return __x <= __y;} 789}; 790 791#if _LIBCPP_STD_VER > 11 792template <> 793struct _LIBCPP_TEMPLATE_VIS less_equal<void> 794{ 795 template <class _T1, class _T2> 796 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 797 auto operator()(_T1&& __t, _T2&& __u) const 798 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) 799 -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) 800 { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } 801 typedef void is_transparent; 802}; 803#endif 804 805 806#if _LIBCPP_STD_VER > 11 807template <class _Tp = void> 808#else 809template <class _Tp> 810#endif 811struct _LIBCPP_TEMPLATE_VIS logical_and : binary_function<_Tp, _Tp, bool> 812{ 813 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 814 bool operator()(const _Tp& __x, const _Tp& __y) const 815 {return __x && __y;} 816}; 817 818#if _LIBCPP_STD_VER > 11 819template <> 820struct _LIBCPP_TEMPLATE_VIS logical_and<void> 821{ 822 template <class _T1, class _T2> 823 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 824 auto operator()(_T1&& __t, _T2&& __u) const 825 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) 826 -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) 827 { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } 828 typedef void is_transparent; 829}; 830#endif 831 832 833#if _LIBCPP_STD_VER > 11 834template <class _Tp = void> 835#else 836template <class _Tp> 837#endif 838struct _LIBCPP_TEMPLATE_VIS logical_or : binary_function<_Tp, _Tp, bool> 839{ 840 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 841 bool operator()(const _Tp& __x, const _Tp& __y) const 842 {return __x || __y;} 843}; 844 845#if _LIBCPP_STD_VER > 11 846template <> 847struct _LIBCPP_TEMPLATE_VIS logical_or<void> 848{ 849 template <class _T1, class _T2> 850 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 851 auto operator()(_T1&& __t, _T2&& __u) const 852 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) 853 -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) 854 { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } 855 typedef void is_transparent; 856}; 857#endif 858 859 860#if _LIBCPP_STD_VER > 11 861template <class _Tp = void> 862#else 863template <class _Tp> 864#endif 865struct _LIBCPP_TEMPLATE_VIS logical_not : unary_function<_Tp, bool> 866{ 867 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 868 bool operator()(const _Tp& __x) const 869 {return !__x;} 870}; 871 872#if _LIBCPP_STD_VER > 11 873template <> 874struct _LIBCPP_TEMPLATE_VIS logical_not<void> 875{ 876 template <class _Tp> 877 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 878 auto operator()(_Tp&& __x) const 879 _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) 880 -> decltype (!_VSTD::forward<_Tp>(__x)) 881 { return !_VSTD::forward<_Tp>(__x); } 882 typedef void is_transparent; 883}; 884#endif 885 886 887#if _LIBCPP_STD_VER > 11 888template <class _Tp = void> 889#else 890template <class _Tp> 891#endif 892struct _LIBCPP_TEMPLATE_VIS bit_and : binary_function<_Tp, _Tp, _Tp> 893{ 894 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 895 _Tp operator()(const _Tp& __x, const _Tp& __y) const 896 {return __x & __y;} 897}; 898 899#if _LIBCPP_STD_VER > 11 900template <> 901struct _LIBCPP_TEMPLATE_VIS bit_and<void> 902{ 903 template <class _T1, class _T2> 904 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 905 auto operator()(_T1&& __t, _T2&& __u) const 906 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) 907 -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) 908 { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } 909 typedef void is_transparent; 910}; 911#endif 912 913 914#if _LIBCPP_STD_VER > 11 915template <class _Tp = void> 916#else 917template <class _Tp> 918#endif 919struct _LIBCPP_TEMPLATE_VIS bit_or : binary_function<_Tp, _Tp, _Tp> 920{ 921 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 922 _Tp operator()(const _Tp& __x, const _Tp& __y) const 923 {return __x | __y;} 924}; 925 926#if _LIBCPP_STD_VER > 11 927template <> 928struct _LIBCPP_TEMPLATE_VIS bit_or<void> 929{ 930 template <class _T1, class _T2> 931 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 932 auto operator()(_T1&& __t, _T2&& __u) const 933 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) 934 -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) 935 { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } 936 typedef void is_transparent; 937}; 938#endif 939 940 941#if _LIBCPP_STD_VER > 11 942template <class _Tp = void> 943#else 944template <class _Tp> 945#endif 946struct _LIBCPP_TEMPLATE_VIS bit_xor : binary_function<_Tp, _Tp, _Tp> 947{ 948 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 949 _Tp operator()(const _Tp& __x, const _Tp& __y) const 950 {return __x ^ __y;} 951}; 952 953#if _LIBCPP_STD_VER > 11 954template <> 955struct _LIBCPP_TEMPLATE_VIS bit_xor<void> 956{ 957 template <class _T1, class _T2> 958 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 959 auto operator()(_T1&& __t, _T2&& __u) const 960 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) 961 -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) 962 { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } 963 typedef void is_transparent; 964}; 965#endif 966 967 968#if _LIBCPP_STD_VER > 11 969template <class _Tp = void> 970struct _LIBCPP_TEMPLATE_VIS bit_not : unary_function<_Tp, _Tp> 971{ 972 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 973 _Tp operator()(const _Tp& __x) const 974 {return ~__x;} 975}; 976 977template <> 978struct _LIBCPP_TEMPLATE_VIS bit_not<void> 979{ 980 template <class _Tp> 981 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 982 auto operator()(_Tp&& __x) const 983 _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) 984 -> decltype (~_VSTD::forward<_Tp>(__x)) 985 { return ~_VSTD::forward<_Tp>(__x); } 986 typedef void is_transparent; 987}; 988#endif 989 990template <class _Predicate> 991class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 unary_negate 992 : public unary_function<typename _Predicate::argument_type, bool> 993{ 994 _Predicate __pred_; 995public: 996 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 997 explicit unary_negate(const _Predicate& __pred) 998 : __pred_(__pred) {} 999 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1000 bool operator()(const typename _Predicate::argument_type& __x) const 1001 {return !__pred_(__x);} 1002}; 1003 1004template <class _Predicate> 1005_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1006unary_negate<_Predicate> 1007not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 1008 1009template <class _Predicate> 1010class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 binary_negate 1011 : public binary_function<typename _Predicate::first_argument_type, 1012 typename _Predicate::second_argument_type, 1013 bool> 1014{ 1015 _Predicate __pred_; 1016public: 1017 _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 1018 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} 1019 1020 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1021 bool operator()(const typename _Predicate::first_argument_type& __x, 1022 const typename _Predicate::second_argument_type& __y) const 1023 {return !__pred_(__x, __y);} 1024}; 1025 1026template <class _Predicate> 1027_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1028binary_negate<_Predicate> 1029not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 1030 1031#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 1032template <class __Operation> 1033class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder1st 1034 : public unary_function<typename __Operation::second_argument_type, 1035 typename __Operation::result_type> 1036{ 1037protected: 1038 __Operation op; 1039 typename __Operation::first_argument_type value; 1040public: 1041 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 1042 const typename __Operation::first_argument_type __y) 1043 : op(__x), value(__y) {} 1044 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1045 (typename __Operation::second_argument_type& __x) const 1046 {return op(value, __x);} 1047 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1048 (const typename __Operation::second_argument_type& __x) const 1049 {return op(value, __x);} 1050}; 1051 1052template <class __Operation, class _Tp> 1053_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1054binder1st<__Operation> 1055bind1st(const __Operation& __op, const _Tp& __x) 1056 {return binder1st<__Operation>(__op, __x);} 1057 1058template <class __Operation> 1059class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder2nd 1060 : public unary_function<typename __Operation::first_argument_type, 1061 typename __Operation::result_type> 1062{ 1063protected: 1064 __Operation op; 1065 typename __Operation::second_argument_type value; 1066public: 1067 _LIBCPP_INLINE_VISIBILITY 1068 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 1069 : op(__x), value(__y) {} 1070 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1071 ( typename __Operation::first_argument_type& __x) const 1072 {return op(__x, value);} 1073 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1074 (const typename __Operation::first_argument_type& __x) const 1075 {return op(__x, value);} 1076}; 1077 1078template <class __Operation, class _Tp> 1079_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1080binder2nd<__Operation> 1081bind2nd(const __Operation& __op, const _Tp& __x) 1082 {return binder2nd<__Operation>(__op, __x);} 1083 1084template <class _Arg, class _Result> 1085class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_unary_function 1086 : public unary_function<_Arg, _Result> 1087{ 1088 _Result (*__f_)(_Arg); 1089public: 1090 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 1091 : __f_(__f) {} 1092 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 1093 {return __f_(__x);} 1094}; 1095 1096template <class _Arg, class _Result> 1097_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1098pointer_to_unary_function<_Arg,_Result> 1099ptr_fun(_Result (*__f)(_Arg)) 1100 {return pointer_to_unary_function<_Arg,_Result>(__f);} 1101 1102template <class _Arg1, class _Arg2, class _Result> 1103class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_binary_function 1104 : public binary_function<_Arg1, _Arg2, _Result> 1105{ 1106 _Result (*__f_)(_Arg1, _Arg2); 1107public: 1108 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 1109 : __f_(__f) {} 1110 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 1111 {return __f_(__x, __y);} 1112}; 1113 1114template <class _Arg1, class _Arg2, class _Result> 1115_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1116pointer_to_binary_function<_Arg1,_Arg2,_Result> 1117ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 1118 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 1119 1120template<class _Sp, class _Tp> 1121class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_t 1122 : public unary_function<_Tp*, _Sp> 1123{ 1124 _Sp (_Tp::*__p_)(); 1125public: 1126 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 1127 : __p_(__p) {} 1128 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 1129 {return (__p->*__p_)();} 1130}; 1131 1132template<class _Sp, class _Tp, class _Ap> 1133class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_t 1134 : public binary_function<_Tp*, _Ap, _Sp> 1135{ 1136 _Sp (_Tp::*__p_)(_Ap); 1137public: 1138 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 1139 : __p_(__p) {} 1140 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 1141 {return (__p->*__p_)(__x);} 1142}; 1143 1144template<class _Sp, class _Tp> 1145_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1146mem_fun_t<_Sp,_Tp> 1147mem_fun(_Sp (_Tp::*__f)()) 1148 {return mem_fun_t<_Sp,_Tp>(__f);} 1149 1150template<class _Sp, class _Tp, class _Ap> 1151_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1152mem_fun1_t<_Sp,_Tp,_Ap> 1153mem_fun(_Sp (_Tp::*__f)(_Ap)) 1154 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1155 1156template<class _Sp, class _Tp> 1157class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_ref_t 1158 : public unary_function<_Tp, _Sp> 1159{ 1160 _Sp (_Tp::*__p_)(); 1161public: 1162 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 1163 : __p_(__p) {} 1164 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 1165 {return (__p.*__p_)();} 1166}; 1167 1168template<class _Sp, class _Tp, class _Ap> 1169class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_ref_t 1170 : public binary_function<_Tp, _Ap, _Sp> 1171{ 1172 _Sp (_Tp::*__p_)(_Ap); 1173public: 1174 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 1175 : __p_(__p) {} 1176 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 1177 {return (__p.*__p_)(__x);} 1178}; 1179 1180template<class _Sp, class _Tp> 1181_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1182mem_fun_ref_t<_Sp,_Tp> 1183mem_fun_ref(_Sp (_Tp::*__f)()) 1184 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 1185 1186template<class _Sp, class _Tp, class _Ap> 1187_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1188mem_fun1_ref_t<_Sp,_Tp,_Ap> 1189mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 1190 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1191 1192template <class _Sp, class _Tp> 1193class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_t 1194 : public unary_function<const _Tp*, _Sp> 1195{ 1196 _Sp (_Tp::*__p_)() const; 1197public: 1198 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 1199 : __p_(__p) {} 1200 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 1201 {return (__p->*__p_)();} 1202}; 1203 1204template <class _Sp, class _Tp, class _Ap> 1205class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_t 1206 : public binary_function<const _Tp*, _Ap, _Sp> 1207{ 1208 _Sp (_Tp::*__p_)(_Ap) const; 1209public: 1210 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 1211 : __p_(__p) {} 1212 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 1213 {return (__p->*__p_)(__x);} 1214}; 1215 1216template <class _Sp, class _Tp> 1217_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1218const_mem_fun_t<_Sp,_Tp> 1219mem_fun(_Sp (_Tp::*__f)() const) 1220 {return const_mem_fun_t<_Sp,_Tp>(__f);} 1221 1222template <class _Sp, class _Tp, class _Ap> 1223_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1224const_mem_fun1_t<_Sp,_Tp,_Ap> 1225mem_fun(_Sp (_Tp::*__f)(_Ap) const) 1226 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1227 1228template <class _Sp, class _Tp> 1229class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_ref_t 1230 : public unary_function<_Tp, _Sp> 1231{ 1232 _Sp (_Tp::*__p_)() const; 1233public: 1234 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 1235 : __p_(__p) {} 1236 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 1237 {return (__p.*__p_)();} 1238}; 1239 1240template <class _Sp, class _Tp, class _Ap> 1241class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_ref_t 1242 : public binary_function<_Tp, _Ap, _Sp> 1243{ 1244 _Sp (_Tp::*__p_)(_Ap) const; 1245public: 1246 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 1247 : __p_(__p) {} 1248 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 1249 {return (__p.*__p_)(__x);} 1250}; 1251 1252template <class _Sp, class _Tp> 1253_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1254const_mem_fun_ref_t<_Sp,_Tp> 1255mem_fun_ref(_Sp (_Tp::*__f)() const) 1256 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 1257 1258template <class _Sp, class _Tp, class _Ap> 1259_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1260const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 1261mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 1262 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1263#endif 1264 1265//////////////////////////////////////////////////////////////////////////////// 1266// MEMFUN 1267//============================================================================== 1268 1269template <class _Tp> 1270class __mem_fn 1271 : public __weak_result_type<_Tp> 1272{ 1273public: 1274 // types 1275 typedef _Tp type; 1276private: 1277 type __f_; 1278 1279public: 1280 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) _NOEXCEPT : __f_(__f) {} 1281 1282#ifndef _LIBCPP_CXX03_LANG 1283 // invoke 1284 template <class... _ArgTypes> 1285 _LIBCPP_INLINE_VISIBILITY 1286 typename __invoke_return<type, _ArgTypes...>::type 1287 operator() (_ArgTypes&&... __args) const { 1288 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 1289 } 1290#else 1291 1292 template <class _A0> 1293 _LIBCPP_INLINE_VISIBILITY 1294 typename __invoke_return0<type, _A0>::type 1295 operator() (_A0& __a0) const { 1296 return __invoke(__f_, __a0); 1297 } 1298 1299 template <class _A0> 1300 _LIBCPP_INLINE_VISIBILITY 1301 typename __invoke_return0<type, _A0 const>::type 1302 operator() (_A0 const& __a0) const { 1303 return __invoke(__f_, __a0); 1304 } 1305 1306 template <class _A0, class _A1> 1307 _LIBCPP_INLINE_VISIBILITY 1308 typename __invoke_return1<type, _A0, _A1>::type 1309 operator() (_A0& __a0, _A1& __a1) const { 1310 return __invoke(__f_, __a0, __a1); 1311 } 1312 1313 template <class _A0, class _A1> 1314 _LIBCPP_INLINE_VISIBILITY 1315 typename __invoke_return1<type, _A0 const, _A1>::type 1316 operator() (_A0 const& __a0, _A1& __a1) const { 1317 return __invoke(__f_, __a0, __a1); 1318 } 1319 1320 template <class _A0, class _A1> 1321 _LIBCPP_INLINE_VISIBILITY 1322 typename __invoke_return1<type, _A0, _A1 const>::type 1323 operator() (_A0& __a0, _A1 const& __a1) const { 1324 return __invoke(__f_, __a0, __a1); 1325 } 1326 1327 template <class _A0, class _A1> 1328 _LIBCPP_INLINE_VISIBILITY 1329 typename __invoke_return1<type, _A0 const, _A1 const>::type 1330 operator() (_A0 const& __a0, _A1 const& __a1) const { 1331 return __invoke(__f_, __a0, __a1); 1332 } 1333 1334 template <class _A0, class _A1, class _A2> 1335 _LIBCPP_INLINE_VISIBILITY 1336 typename __invoke_return2<type, _A0, _A1, _A2>::type 1337 operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { 1338 return __invoke(__f_, __a0, __a1, __a2); 1339 } 1340 1341 template <class _A0, class _A1, class _A2> 1342 _LIBCPP_INLINE_VISIBILITY 1343 typename __invoke_return2<type, _A0 const, _A1, _A2>::type 1344 operator() (_A0 const& __a0, _A1& __a1, _A2& __a2) const { 1345 return __invoke(__f_, __a0, __a1, __a2); 1346 } 1347 1348 template <class _A0, class _A1, class _A2> 1349 _LIBCPP_INLINE_VISIBILITY 1350 typename __invoke_return2<type, _A0, _A1 const, _A2>::type 1351 operator() (_A0& __a0, _A1 const& __a1, _A2& __a2) const { 1352 return __invoke(__f_, __a0, __a1, __a2); 1353 } 1354 1355 template <class _A0, class _A1, class _A2> 1356 _LIBCPP_INLINE_VISIBILITY 1357 typename __invoke_return2<type, _A0, _A1, _A2 const>::type 1358 operator() (_A0& __a0, _A1& __a1, _A2 const& __a2) const { 1359 return __invoke(__f_, __a0, __a1, __a2); 1360 } 1361 1362 template <class _A0, class _A1, class _A2> 1363 _LIBCPP_INLINE_VISIBILITY 1364 typename __invoke_return2<type, _A0 const, _A1 const, _A2>::type 1365 operator() (_A0 const& __a0, _A1 const& __a1, _A2& __a2) const { 1366 return __invoke(__f_, __a0, __a1, __a2); 1367 } 1368 1369 template <class _A0, class _A1, class _A2> 1370 _LIBCPP_INLINE_VISIBILITY 1371 typename __invoke_return2<type, _A0 const, _A1, _A2 const>::type 1372 operator() (_A0 const& __a0, _A1& __a1, _A2 const& __a2) const { 1373 return __invoke(__f_, __a0, __a1, __a2); 1374 } 1375 1376 template <class _A0, class _A1, class _A2> 1377 _LIBCPP_INLINE_VISIBILITY 1378 typename __invoke_return2<type, _A0, _A1 const, _A2 const>::type 1379 operator() (_A0& __a0, _A1 const& __a1, _A2 const& __a2) const { 1380 return __invoke(__f_, __a0, __a1, __a2); 1381 } 1382 1383 template <class _A0, class _A1, class _A2> 1384 _LIBCPP_INLINE_VISIBILITY 1385 typename __invoke_return2<type, _A0 const, _A1 const, _A2 const>::type 1386 operator() (_A0 const& __a0, _A1 const& __a1, _A2 const& __a2) const { 1387 return __invoke(__f_, __a0, __a1, __a2); 1388 } 1389#endif 1390}; 1391 1392template<class _Rp, class _Tp> 1393inline _LIBCPP_INLINE_VISIBILITY 1394__mem_fn<_Rp _Tp::*> 1395mem_fn(_Rp _Tp::* __pm) _NOEXCEPT 1396{ 1397 return __mem_fn<_Rp _Tp::*>(__pm); 1398} 1399 1400//////////////////////////////////////////////////////////////////////////////// 1401// FUNCTION 1402//============================================================================== 1403 1404// bad_function_call 1405 1406class _LIBCPP_EXCEPTION_ABI bad_function_call 1407 : public exception 1408{ 1409#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 1410public: 1411 virtual ~bad_function_call() _NOEXCEPT; 1412 1413 virtual const char* what() const _NOEXCEPT; 1414#endif 1415}; 1416 1417_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY 1418void __throw_bad_function_call() 1419{ 1420#ifndef _LIBCPP_NO_EXCEPTIONS 1421 throw bad_function_call(); 1422#else 1423 _VSTD::abort(); 1424#endif 1425} 1426 1427template<class _Fp> class _LIBCPP_TEMPLATE_VIS function; // undefined 1428 1429namespace __function 1430{ 1431 1432template<class _Rp> 1433struct __maybe_derive_from_unary_function 1434{ 1435}; 1436 1437template<class _Rp, class _A1> 1438struct __maybe_derive_from_unary_function<_Rp(_A1)> 1439 : public unary_function<_A1, _Rp> 1440{ 1441}; 1442 1443template<class _Rp> 1444struct __maybe_derive_from_binary_function 1445{ 1446}; 1447 1448template<class _Rp, class _A1, class _A2> 1449struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 1450 : public binary_function<_A1, _A2, _Rp> 1451{ 1452}; 1453 1454template <class _Fp> 1455_LIBCPP_INLINE_VISIBILITY 1456bool __not_null(_Fp const&) { return true; } 1457 1458template <class _Fp> 1459_LIBCPP_INLINE_VISIBILITY 1460bool __not_null(_Fp* __ptr) { return __ptr; } 1461 1462template <class _Ret, class _Class> 1463_LIBCPP_INLINE_VISIBILITY 1464bool __not_null(_Ret _Class::*__ptr) { return __ptr; } 1465 1466template <class _Fp> 1467_LIBCPP_INLINE_VISIBILITY 1468bool __not_null(function<_Fp> const& __f) { return !!__f; } 1469 1470} // namespace __function 1471 1472#ifndef _LIBCPP_CXX03_LANG 1473 1474namespace __function { 1475 1476// __alloc_func holds a functor and an allocator. 1477 1478template <class _Fp, class _Ap, class _FB> class __alloc_func; 1479 1480template <class _Fp, class _Ap, class _Rp, class... _ArgTypes> 1481class __alloc_func<_Fp, _Ap, _Rp(_ArgTypes...)> 1482{ 1483 __compressed_pair<_Fp, _Ap> __f_; 1484 1485 public: 1486 typedef _Fp _Target; 1487 typedef _Ap _Alloc; 1488 1489 _LIBCPP_INLINE_VISIBILITY 1490 const _Target& __target() const { return __f_.first(); } 1491 1492 _LIBCPP_INLINE_VISIBILITY 1493 const _Alloc& __allocator() const { return __f_.second(); } 1494 1495 _LIBCPP_INLINE_VISIBILITY 1496 explicit __alloc_func(_Target&& __f) 1497 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1498 _VSTD::forward_as_tuple()) 1499 { 1500 } 1501 1502 _LIBCPP_INLINE_VISIBILITY 1503 explicit __alloc_func(const _Target& __f, const _Alloc& __a) 1504 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1505 _VSTD::forward_as_tuple(__a)) 1506 { 1507 } 1508 1509 _LIBCPP_INLINE_VISIBILITY 1510 explicit __alloc_func(const _Target& __f, _Alloc&& __a) 1511 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1512 _VSTD::forward_as_tuple(_VSTD::move(__a))) 1513 { 1514 } 1515 1516 _LIBCPP_INLINE_VISIBILITY 1517 explicit __alloc_func(_Target&& __f, _Alloc&& __a) 1518 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1519 _VSTD::forward_as_tuple(_VSTD::move(__a))) 1520 { 1521 } 1522 1523 _LIBCPP_INLINE_VISIBILITY 1524 _Rp operator()(_ArgTypes&&... __arg) 1525 { 1526 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1527 return _Invoker::__call(__f_.first(), 1528 _VSTD::forward<_ArgTypes>(__arg)...); 1529 } 1530 1531 _LIBCPP_INLINE_VISIBILITY 1532 __alloc_func* __clone() const 1533 { 1534 typedef allocator_traits<_Alloc> __alloc_traits; 1535 typedef 1536 typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type 1537 _AA; 1538 _AA __a(__f_.second()); 1539 typedef __allocator_destructor<_AA> _Dp; 1540 unique_ptr<__alloc_func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1541 ::new ((void*)__hold.get()) __alloc_func(__f_.first(), _Alloc(__a)); 1542 return __hold.release(); 1543 } 1544 1545 _LIBCPP_INLINE_VISIBILITY 1546 void destroy() _NOEXCEPT { __f_.~__compressed_pair<_Target, _Alloc>(); } 1547}; 1548 1549// __base provides an abstract interface for copyable functors. 1550 1551template<class _Fp> class __base; 1552 1553template<class _Rp, class ..._ArgTypes> 1554class __base<_Rp(_ArgTypes...)> 1555{ 1556 __base(const __base&); 1557 __base& operator=(const __base&); 1558public: 1559 _LIBCPP_INLINE_VISIBILITY __base() {} 1560 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 1561 virtual __base* __clone() const = 0; 1562 virtual void __clone(__base*) const = 0; 1563 virtual void destroy() _NOEXCEPT = 0; 1564 virtual void destroy_deallocate() _NOEXCEPT = 0; 1565 virtual _Rp operator()(_ArgTypes&& ...) = 0; 1566#ifndef _LIBCPP_NO_RTTI 1567 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 1568 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 1569#endif // _LIBCPP_NO_RTTI 1570}; 1571 1572// __func implements __base for a given functor type. 1573 1574template<class _FD, class _Alloc, class _FB> class __func; 1575 1576template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1577class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 1578 : public __base<_Rp(_ArgTypes...)> 1579{ 1580 __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> __f_; 1581public: 1582 _LIBCPP_INLINE_VISIBILITY 1583 explicit __func(_Fp&& __f) 1584 : __f_(_VSTD::move(__f)) {} 1585 1586 _LIBCPP_INLINE_VISIBILITY 1587 explicit __func(const _Fp& __f, const _Alloc& __a) 1588 : __f_(__f, __a) {} 1589 1590 _LIBCPP_INLINE_VISIBILITY 1591 explicit __func(const _Fp& __f, _Alloc&& __a) 1592 : __f_(__f, _VSTD::move(__a)) {} 1593 1594 _LIBCPP_INLINE_VISIBILITY 1595 explicit __func(_Fp&& __f, _Alloc&& __a) 1596 : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} 1597 1598 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1599 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1600 virtual void destroy() _NOEXCEPT; 1601 virtual void destroy_deallocate() _NOEXCEPT; 1602 virtual _Rp operator()(_ArgTypes&&... __arg); 1603#ifndef _LIBCPP_NO_RTTI 1604 virtual const void* target(const type_info&) const _NOEXCEPT; 1605 virtual const std::type_info& target_type() const _NOEXCEPT; 1606#endif // _LIBCPP_NO_RTTI 1607}; 1608 1609template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1610__base<_Rp(_ArgTypes...)>* 1611__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1612{ 1613 typedef allocator_traits<_Alloc> __alloc_traits; 1614 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1615 _Ap __a(__f_.__allocator()); 1616 typedef __allocator_destructor<_Ap> _Dp; 1617 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1618 ::new ((void*)__hold.get()) __func(__f_.__target(), _Alloc(__a)); 1619 return __hold.release(); 1620} 1621 1622template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1623void 1624__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1625{ 1626 ::new (__p) __func(__f_.__target(), __f_.__allocator()); 1627} 1628 1629template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1630void 1631__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1632{ 1633 __f_.destroy(); 1634} 1635 1636template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1637void 1638__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1639{ 1640 typedef allocator_traits<_Alloc> __alloc_traits; 1641 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1642 _Ap __a(__f_.__allocator()); 1643 __f_.destroy(); 1644 __a.deallocate(this, 1); 1645} 1646 1647template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1648_Rp 1649__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1650{ 1651 return __f_(_VSTD::forward<_ArgTypes>(__arg)...); 1652} 1653 1654#ifndef _LIBCPP_NO_RTTI 1655 1656template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1657const void* 1658__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1659{ 1660 if (__ti == typeid(_Fp)) 1661 return &__f_.__target(); 1662 return (const void*)0; 1663} 1664 1665template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1666const std::type_info& 1667__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1668{ 1669 return typeid(_Fp); 1670} 1671 1672#endif // _LIBCPP_NO_RTTI 1673 1674// __value_func creates a value-type from a __func. 1675 1676template <class _Fp> class __value_func; 1677 1678template <class _Rp, class... _ArgTypes> class __value_func<_Rp(_ArgTypes...)> 1679{ 1680 typename aligned_storage<3 * sizeof(void*)>::type __buf_; 1681 1682 typedef __base<_Rp(_ArgTypes...)> __func; 1683 __func* __f_; 1684 1685 _LIBCPP_NO_CFI static __func* __as_base(void* p) 1686 { 1687 return reinterpret_cast<__func*>(p); 1688 } 1689 1690 public: 1691 _LIBCPP_INLINE_VISIBILITY 1692 __value_func() _NOEXCEPT : __f_(0) {} 1693 1694 template <class _Fp, class _Alloc> 1695 _LIBCPP_INLINE_VISIBILITY __value_func(_Fp&& __f, const _Alloc __a) 1696 : __f_(0) 1697 { 1698 typedef allocator_traits<_Alloc> __alloc_traits; 1699 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; 1700 typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type 1701 _FunAlloc; 1702 1703 if (__function::__not_null(__f)) 1704 { 1705 _FunAlloc __af(__a); 1706 if (sizeof(_Fun) <= sizeof(__buf_) && 1707 is_nothrow_copy_constructible<_Fp>::value && 1708 is_nothrow_copy_constructible<_FunAlloc>::value) 1709 { 1710 __f_ = 1711 ::new ((void*)&__buf_) _Fun(_VSTD::move(__f), _Alloc(__af)); 1712 } 1713 else 1714 { 1715 typedef __allocator_destructor<_FunAlloc> _Dp; 1716 unique_ptr<__func, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); 1717 ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f), _Alloc(__a)); 1718 __f_ = __hold.release(); 1719 } 1720 } 1721 } 1722 1723 _LIBCPP_INLINE_VISIBILITY 1724 __value_func(const __value_func& __f) 1725 { 1726 if (__f.__f_ == 0) 1727 __f_ = 0; 1728 else if ((void*)__f.__f_ == &__f.__buf_) 1729 { 1730 __f_ = __as_base(&__buf_); 1731 __f.__f_->__clone(__f_); 1732 } 1733 else 1734 __f_ = __f.__f_->__clone(); 1735 } 1736 1737 _LIBCPP_INLINE_VISIBILITY 1738 __value_func(__value_func&& __f) _NOEXCEPT 1739 { 1740 if (__f.__f_ == 0) 1741 __f_ = 0; 1742 else if ((void*)__f.__f_ == &__f.__buf_) 1743 { 1744 __f_ = __as_base(&__buf_); 1745 __f.__f_->__clone(__f_); 1746 } 1747 else 1748 { 1749 __f_ = __f.__f_; 1750 __f.__f_ = 0; 1751 } 1752 } 1753 1754 _LIBCPP_INLINE_VISIBILITY 1755 ~__value_func() 1756 { 1757 if ((void*)__f_ == &__buf_) 1758 __f_->destroy(); 1759 else if (__f_) 1760 __f_->destroy_deallocate(); 1761 } 1762 1763 _LIBCPP_INLINE_VISIBILITY 1764 __value_func& operator=(__value_func&& __f) 1765 { 1766 *this = nullptr; 1767 if (__f.__f_ == 0) 1768 __f_ = 0; 1769 else if ((void*)__f.__f_ == &__f.__buf_) 1770 { 1771 __f_ = __as_base(&__buf_); 1772 __f.__f_->__clone(__f_); 1773 } 1774 else 1775 { 1776 __f_ = __f.__f_; 1777 __f.__f_ = 0; 1778 } 1779 return *this; 1780 } 1781 1782 _LIBCPP_INLINE_VISIBILITY 1783 __value_func& operator=(nullptr_t) 1784 { 1785 __func* __f = __f_; 1786 __f_ = 0; 1787 if ((void*)__f == &__buf_) 1788 __f->destroy(); 1789 else if (__f) 1790 __f->destroy_deallocate(); 1791 return *this; 1792 } 1793 1794 _LIBCPP_INLINE_VISIBILITY 1795 _Rp operator()(_ArgTypes&&... __args) const 1796 { 1797 if (__f_ == 0) 1798 __throw_bad_function_call(); 1799 return (*__f_)(_VSTD::forward<_ArgTypes>(__args)...); 1800 } 1801 1802 _LIBCPP_INLINE_VISIBILITY 1803 void swap(__value_func& __f) _NOEXCEPT 1804 { 1805 if (&__f == this) 1806 return; 1807 if ((void*)__f_ == &__buf_ && (void*)__f.__f_ == &__f.__buf_) 1808 { 1809 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1810 __func* __t = __as_base(&__tempbuf); 1811 __f_->__clone(__t); 1812 __f_->destroy(); 1813 __f_ = 0; 1814 __f.__f_->__clone(__as_base(&__buf_)); 1815 __f.__f_->destroy(); 1816 __f.__f_ = 0; 1817 __f_ = __as_base(&__buf_); 1818 __t->__clone(__as_base(&__f.__buf_)); 1819 __t->destroy(); 1820 __f.__f_ = __as_base(&__f.__buf_); 1821 } 1822 else if ((void*)__f_ == &__buf_) 1823 { 1824 __f_->__clone(__as_base(&__f.__buf_)); 1825 __f_->destroy(); 1826 __f_ = __f.__f_; 1827 __f.__f_ = __as_base(&__f.__buf_); 1828 } 1829 else if ((void*)__f.__f_ == &__f.__buf_) 1830 { 1831 __f.__f_->__clone(__as_base(&__buf_)); 1832 __f.__f_->destroy(); 1833 __f.__f_ = __f_; 1834 __f_ = __as_base(&__buf_); 1835 } 1836 else 1837 _VSTD::swap(__f_, __f.__f_); 1838 } 1839 1840 _LIBCPP_INLINE_VISIBILITY 1841 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { return __f_ != 0; } 1842 1843#ifndef _LIBCPP_NO_RTTI 1844 _LIBCPP_INLINE_VISIBILITY 1845 const std::type_info& target_type() const _NOEXCEPT 1846 { 1847 if (__f_ == 0) 1848 return typeid(void); 1849 return __f_->target_type(); 1850 } 1851 1852 template <typename _Tp> 1853 _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT 1854 { 1855 if (__f_ == 0) 1856 return 0; 1857 return (const _Tp*)__f_->target(typeid(_Tp)); 1858 } 1859#endif // _LIBCPP_NO_RTTI 1860}; 1861 1862// Storage for a functor object, to be used with __policy to manage copy and 1863// destruction. 1864union __policy_storage 1865{ 1866 mutable char __small[sizeof(void*) * 2]; 1867 void* __large; 1868}; 1869 1870// True if _Fun can safely be held in __policy_storage.__small. 1871template <typename _Fun> 1872struct __use_small_storage 1873 : public _VSTD::integral_constant< 1874 bool, sizeof(_Fun) <= sizeof(__policy_storage) && 1875 alignof(_Fun) <= alignof(__policy_storage) && 1876 _VSTD::is_trivially_copy_constructible<_Fun>::value && 1877 _VSTD::is_trivially_destructible<_Fun>::value> {}; 1878 1879// Policy contains information about how to copy, destroy, and move the 1880// underlying functor. You can think of it as a vtable of sorts. 1881struct __policy 1882{ 1883 // Used to copy or destroy __large values. null for trivial objects. 1884 void* (*const __clone)(const void*); 1885 void (*const __destroy)(void*); 1886 1887 // True if this is the null policy (no value). 1888 const bool __is_null; 1889 1890 // The target type. May be null if RTTI is disabled. 1891 const std::type_info* const __type_info; 1892 1893 // Returns a pointer to a static policy object suitable for the functor 1894 // type. 1895 template <typename _Fun> 1896 _LIBCPP_INLINE_VISIBILITY static const __policy* __create() 1897 { 1898 return __choose_policy<_Fun>(__use_small_storage<_Fun>()); 1899 } 1900 1901 _LIBCPP_INLINE_VISIBILITY 1902 static const __policy* __create_empty() 1903 { 1904 static const _LIBCPP_CONSTEXPR __policy __policy_ = {nullptr, nullptr, 1905 true, 1906#ifndef _LIBCPP_NO_RTTI 1907 &typeid(void) 1908#else 1909 nullptr 1910#endif 1911 }; 1912 return &__policy_; 1913 } 1914 1915 private: 1916 template <typename _Fun> static void* __large_clone(const void* __s) 1917 { 1918 const _Fun* __f = static_cast<const _Fun*>(__s); 1919 return __f->__clone(); 1920 } 1921 1922 template <typename _Fun> static void __large_destroy(void* __s) 1923 { 1924 typedef allocator_traits<typename _Fun::_Alloc> __alloc_traits; 1925 typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type 1926 _FunAlloc; 1927 _Fun* __f = static_cast<_Fun*>(__s); 1928 _FunAlloc __a(__f->__allocator()); 1929 __f->destroy(); 1930 __a.deallocate(__f, 1); 1931 } 1932 1933 template <typename _Fun> 1934 _LIBCPP_INLINE_VISIBILITY static const __policy* 1935 __choose_policy(/* is_small = */ false_type) 1936 { 1937 static const _LIBCPP_CONSTEXPR __policy __policy_ = { 1938 &__large_clone<_Fun>, &__large_destroy<_Fun>, false, 1939#ifndef _LIBCPP_NO_RTTI 1940 &typeid(typename _Fun::_Target) 1941#else 1942 nullptr 1943#endif 1944 }; 1945 return &__policy_; 1946 } 1947 1948 template <typename _Fun> 1949 _LIBCPP_INLINE_VISIBILITY static const __policy* 1950 __choose_policy(/* is_small = */ true_type) 1951 { 1952 static const _LIBCPP_CONSTEXPR __policy __policy_ = { 1953 nullptr, nullptr, false, 1954#ifndef _LIBCPP_NO_RTTI 1955 &typeid(typename _Fun::_Target) 1956#else 1957 nullptr 1958#endif 1959 }; 1960 return &__policy_; 1961 } 1962}; 1963 1964// Used to choose between perfect forwarding or pass-by-value. Pass-by-value is 1965// faster for types that can be passed in registers. 1966template <typename _Tp> 1967using __fast_forward = 1968 typename _VSTD::conditional<_VSTD::is_scalar<_Tp>::value, _Tp, _Tp&&>::type; 1969 1970// __policy_invoker calls an instance of __alloc_func held in __policy_storage. 1971 1972template <class _Fp> struct __policy_invoker; 1973 1974template <class _Rp, class... _ArgTypes> 1975struct __policy_invoker<_Rp(_ArgTypes...)> 1976{ 1977 typedef _Rp (*__Call)(const __policy_storage*, 1978 __fast_forward<_ArgTypes>...); 1979 1980 __Call __call_; 1981 1982 // Creates an invoker that throws bad_function_call. 1983 _LIBCPP_INLINE_VISIBILITY 1984 __policy_invoker() : __call_(&__call_empty) {} 1985 1986 // Creates an invoker that calls the given instance of __func. 1987 template <typename _Fun> 1988 _LIBCPP_INLINE_VISIBILITY static __policy_invoker __create() 1989 { 1990 return __policy_invoker(&__call_impl<_Fun>); 1991 } 1992 1993 private: 1994 _LIBCPP_INLINE_VISIBILITY 1995 explicit __policy_invoker(__Call __c) : __call_(__c) {} 1996 1997 static _Rp __call_empty(const __policy_storage*, 1998 __fast_forward<_ArgTypes>...) 1999 { 2000 __throw_bad_function_call(); 2001 } 2002 2003 template <typename _Fun> 2004 static _Rp __call_impl(const __policy_storage* __buf, 2005 __fast_forward<_ArgTypes>... __args) 2006 { 2007 _Fun* __f = reinterpret_cast<_Fun*>(__use_small_storage<_Fun>::value 2008 ? &__buf->__small 2009 : __buf->__large); 2010 return (*__f)(_VSTD::forward<_ArgTypes>(__args)...); 2011 } 2012}; 2013 2014// __policy_func uses a __policy and __policy_invoker to create a type-erased, 2015// copyable functor. 2016 2017template <class _Fp> class __policy_func; 2018 2019template <class _Rp, class... _ArgTypes> class __policy_func<_Rp(_ArgTypes...)> 2020{ 2021 // Inline storage for small objects. 2022 __policy_storage __buf_; 2023 2024 // Calls the value stored in __buf_. This could technically be part of 2025 // policy, but storing it here eliminates a level of indirection inside 2026 // operator(). 2027 typedef __function::__policy_invoker<_Rp(_ArgTypes...)> __invoker; 2028 __invoker __invoker_; 2029 2030 // The policy that describes how to move / copy / destroy __buf_. Never 2031 // null, even if the function is empty. 2032 const __policy* __policy_; 2033 2034 public: 2035 _LIBCPP_INLINE_VISIBILITY 2036 __policy_func() : __policy_(__policy::__create_empty()) {} 2037 2038 template <class _Fp, class _Alloc> 2039 _LIBCPP_INLINE_VISIBILITY __policy_func(_Fp&& __f, const _Alloc& __a) 2040 : __policy_(__policy::__create_empty()) 2041 { 2042 typedef __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; 2043 typedef allocator_traits<_Alloc> __alloc_traits; 2044 typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type 2045 _FunAlloc; 2046 2047 if (__function::__not_null(__f)) 2048 { 2049 __invoker_ = __invoker::template __create<_Fun>(); 2050 __policy_ = __policy::__create<_Fun>(); 2051 2052 _FunAlloc __af(__a); 2053 if (__use_small_storage<_Fun>()) 2054 { 2055 ::new ((void*)&__buf_.__small) 2056 _Fun(_VSTD::move(__f), _Alloc(__af)); 2057 } 2058 else 2059 { 2060 typedef __allocator_destructor<_FunAlloc> _Dp; 2061 unique_ptr<_Fun, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); 2062 ::new ((void*)__hold.get()) 2063 _Fun(_VSTD::move(__f), _Alloc(__af)); 2064 __buf_.__large = __hold.release(); 2065 } 2066 } 2067 } 2068 2069 _LIBCPP_INLINE_VISIBILITY 2070 __policy_func(const __policy_func& __f) 2071 : __buf_(__f.__buf_), __invoker_(__f.__invoker_), 2072 __policy_(__f.__policy_) 2073 { 2074 if (__policy_->__clone) 2075 __buf_.__large = __policy_->__clone(__f.__buf_.__large); 2076 } 2077 2078 _LIBCPP_INLINE_VISIBILITY 2079 __policy_func(__policy_func&& __f) 2080 : __buf_(__f.__buf_), __invoker_(__f.__invoker_), 2081 __policy_(__f.__policy_) 2082 { 2083 if (__policy_->__destroy) 2084 { 2085 __f.__policy_ = __policy::__create_empty(); 2086 __f.__invoker_ = __invoker(); 2087 } 2088 } 2089 2090 _LIBCPP_INLINE_VISIBILITY 2091 ~__policy_func() 2092 { 2093 if (__policy_->__destroy) 2094 __policy_->__destroy(__buf_.__large); 2095 } 2096 2097 _LIBCPP_INLINE_VISIBILITY 2098 __policy_func& operator=(__policy_func&& __f) 2099 { 2100 *this = nullptr; 2101 __buf_ = __f.__buf_; 2102 __invoker_ = __f.__invoker_; 2103 __policy_ = __f.__policy_; 2104 __f.__policy_ = __policy::__create_empty(); 2105 __f.__invoker_ = __invoker(); 2106 return *this; 2107 } 2108 2109 _LIBCPP_INLINE_VISIBILITY 2110 __policy_func& operator=(nullptr_t) 2111 { 2112 const __policy* __p = __policy_; 2113 __policy_ = __policy::__create_empty(); 2114 __invoker_ = __invoker(); 2115 if (__p->__destroy) 2116 __p->__destroy(__buf_.__large); 2117 return *this; 2118 } 2119 2120 _LIBCPP_INLINE_VISIBILITY 2121 _Rp operator()(_ArgTypes&&... __args) const 2122 { 2123 return __invoker_.__call_(_VSTD::addressof(__buf_), 2124 _VSTD::forward<_ArgTypes>(__args)...); 2125 } 2126 2127 _LIBCPP_INLINE_VISIBILITY 2128 void swap(__policy_func& __f) 2129 { 2130 _VSTD::swap(__invoker_, __f.__invoker_); 2131 _VSTD::swap(__policy_, __f.__policy_); 2132 _VSTD::swap(__buf_, __f.__buf_); 2133 } 2134 2135 _LIBCPP_INLINE_VISIBILITY 2136 explicit operator bool() const _NOEXCEPT 2137 { 2138 return !__policy_->__is_null; 2139 } 2140 2141#ifndef _LIBCPP_NO_RTTI 2142 _LIBCPP_INLINE_VISIBILITY 2143 const std::type_info& target_type() const _NOEXCEPT 2144 { 2145 return *__policy_->__type_info; 2146 } 2147 2148 template <typename _Tp> 2149 _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT 2150 { 2151 if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info) 2152 return nullptr; 2153 if (__policy_->__clone) // Out of line storage. 2154 return reinterpret_cast<const _Tp*>(__buf_.__large); 2155 else 2156 return reinterpret_cast<const _Tp*>(&__buf_.__small); 2157 } 2158#endif // _LIBCPP_NO_RTTI 2159}; 2160 2161} // __function 2162 2163template<class _Rp, class ..._ArgTypes> 2164class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)> 2165 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 2166 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 2167{ 2168#ifndef _LIBCPP_ABI_OPTIMIZED_FUNCTION 2169 typedef __function::__value_func<_Rp(_ArgTypes...)> __func; 2170#else 2171 typedef __function::__policy_func<_Rp(_ArgTypes...)> __func; 2172#endif 2173 2174 __func __f_; 2175 2176 template <class _Fp, bool = __lazy_and< 2177 integral_constant<bool, !is_same<__uncvref_t<_Fp>, function>::value>, 2178 __invokable<_Fp&, _ArgTypes...> 2179 >::value> 2180 struct __callable; 2181 template <class _Fp> 2182 struct __callable<_Fp, true> 2183 { 2184 static const bool value = is_same<void, _Rp>::value || 2185 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, 2186 _Rp>::value; 2187 }; 2188 template <class _Fp> 2189 struct __callable<_Fp, false> 2190 { 2191 static const bool value = false; 2192 }; 2193 2194 template <class _Fp> 2195 using _EnableIfCallable = typename enable_if<__callable<_Fp>::value>::type; 2196public: 2197 typedef _Rp result_type; 2198 2199 // construct/copy/destroy: 2200 _LIBCPP_INLINE_VISIBILITY 2201 function() _NOEXCEPT { } 2202 _LIBCPP_INLINE_VISIBILITY 2203 function(nullptr_t) _NOEXCEPT {} 2204 function(const function&); 2205 function(function&&) _NOEXCEPT; 2206 template<class _Fp, class = _EnableIfCallable<_Fp>> 2207 function(_Fp); 2208 2209#if _LIBCPP_STD_VER <= 14 2210 template<class _Alloc> 2211 _LIBCPP_INLINE_VISIBILITY 2212 function(allocator_arg_t, const _Alloc&) _NOEXCEPT {} 2213 template<class _Alloc> 2214 _LIBCPP_INLINE_VISIBILITY 2215 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT {} 2216 template<class _Alloc> 2217 function(allocator_arg_t, const _Alloc&, const function&); 2218 template<class _Alloc> 2219 function(allocator_arg_t, const _Alloc&, function&&); 2220 template<class _Fp, class _Alloc, class = _EnableIfCallable<_Fp>> 2221 function(allocator_arg_t, const _Alloc& __a, _Fp __f); 2222#endif 2223 2224 function& operator=(const function&); 2225 function& operator=(function&&) _NOEXCEPT; 2226 function& operator=(nullptr_t) _NOEXCEPT; 2227 template<class _Fp, class = _EnableIfCallable<_Fp>> 2228 function& operator=(_Fp&&); 2229 2230 ~function(); 2231 2232 // function modifiers: 2233 void swap(function&) _NOEXCEPT; 2234 2235#if _LIBCPP_STD_VER <= 14 2236 template<class _Fp, class _Alloc> 2237 _LIBCPP_INLINE_VISIBILITY 2238 void assign(_Fp&& __f, const _Alloc& __a) 2239 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 2240#endif 2241 2242 // function capacity: 2243 _LIBCPP_INLINE_VISIBILITY 2244 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { 2245 return static_cast<bool>(__f_); 2246 } 2247 2248 // deleted overloads close possible hole in the type system 2249 template<class _R2, class... _ArgTypes2> 2250 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 2251 template<class _R2, class... _ArgTypes2> 2252 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 2253public: 2254 // function invocation: 2255 _Rp operator()(_ArgTypes...) const; 2256 2257#ifndef _LIBCPP_NO_RTTI 2258 // function target access: 2259 const std::type_info& target_type() const _NOEXCEPT; 2260 template <typename _Tp> _Tp* target() _NOEXCEPT; 2261 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 2262#endif // _LIBCPP_NO_RTTI 2263}; 2264 2265template<class _Rp, class ..._ArgTypes> 2266function<_Rp(_ArgTypes...)>::function(const function& __f) : __f_(__f.__f_) {} 2267 2268#if _LIBCPP_STD_VER <= 14 2269template<class _Rp, class ..._ArgTypes> 2270template <class _Alloc> 2271function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 2272 const function& __f) : __f_(__f.__f_) {} 2273#endif 2274 2275template <class _Rp, class... _ArgTypes> 2276function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 2277 : __f_(_VSTD::move(__f.__f_)) {} 2278 2279#if _LIBCPP_STD_VER <= 14 2280template<class _Rp, class ..._ArgTypes> 2281template <class _Alloc> 2282function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 2283 function&& __f) 2284 : __f_(_VSTD::move(__f.__f_)) {} 2285#endif 2286 2287template <class _Rp, class... _ArgTypes> 2288template <class _Fp, class> 2289function<_Rp(_ArgTypes...)>::function(_Fp __f) 2290 : __f_(_VSTD::move(__f), allocator<_Fp>()) {} 2291 2292#if _LIBCPP_STD_VER <= 14 2293template <class _Rp, class... _ArgTypes> 2294template <class _Fp, class _Alloc, class> 2295function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a, 2296 _Fp __f) 2297 : __f_(_VSTD::move(__f), __a) {} 2298#endif 2299 2300template<class _Rp, class ..._ArgTypes> 2301function<_Rp(_ArgTypes...)>& 2302function<_Rp(_ArgTypes...)>::operator=(const function& __f) 2303{ 2304 function(__f).swap(*this); 2305 return *this; 2306} 2307 2308template<class _Rp, class ..._ArgTypes> 2309function<_Rp(_ArgTypes...)>& 2310function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 2311{ 2312 __f_ = std::move(__f.__f_); 2313 return *this; 2314} 2315 2316template<class _Rp, class ..._ArgTypes> 2317function<_Rp(_ArgTypes...)>& 2318function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 2319{ 2320 __f_ = nullptr; 2321 return *this; 2322} 2323 2324template<class _Rp, class ..._ArgTypes> 2325template <class _Fp, class> 2326function<_Rp(_ArgTypes...)>& 2327function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 2328{ 2329 function(_VSTD::forward<_Fp>(__f)).swap(*this); 2330 return *this; 2331} 2332 2333template<class _Rp, class ..._ArgTypes> 2334function<_Rp(_ArgTypes...)>::~function() {} 2335 2336template<class _Rp, class ..._ArgTypes> 2337void 2338function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 2339{ 2340 __f_.swap(__f.__f_); 2341} 2342 2343template<class _Rp, class ..._ArgTypes> 2344_Rp 2345function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 2346{ 2347 return __f_(_VSTD::forward<_ArgTypes>(__arg)...); 2348} 2349 2350#ifndef _LIBCPP_NO_RTTI 2351 2352template<class _Rp, class ..._ArgTypes> 2353const std::type_info& 2354function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 2355{ 2356 return __f_.target_type(); 2357} 2358 2359template<class _Rp, class ..._ArgTypes> 2360template <typename _Tp> 2361_Tp* 2362function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 2363{ 2364 return (_Tp*)(__f_.template target<_Tp>()); 2365} 2366 2367template<class _Rp, class ..._ArgTypes> 2368template <typename _Tp> 2369const _Tp* 2370function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 2371{ 2372 return __f_.template target<_Tp>(); 2373} 2374 2375#endif // _LIBCPP_NO_RTTI 2376 2377template <class _Rp, class... _ArgTypes> 2378inline _LIBCPP_INLINE_VISIBILITY 2379bool 2380operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 2381 2382template <class _Rp, class... _ArgTypes> 2383inline _LIBCPP_INLINE_VISIBILITY 2384bool 2385operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 2386 2387template <class _Rp, class... _ArgTypes> 2388inline _LIBCPP_INLINE_VISIBILITY 2389bool 2390operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 2391 2392template <class _Rp, class... _ArgTypes> 2393inline _LIBCPP_INLINE_VISIBILITY 2394bool 2395operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 2396 2397template <class _Rp, class... _ArgTypes> 2398inline _LIBCPP_INLINE_VISIBILITY 2399void 2400swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 2401{return __x.swap(__y);} 2402 2403#else // _LIBCPP_CXX03_LANG 2404 2405#include <__functional_03> 2406 2407#endif 2408 2409//////////////////////////////////////////////////////////////////////////////// 2410// BIND 2411//============================================================================== 2412 2413template<class _Tp> struct __is_bind_expression : public false_type {}; 2414template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_bind_expression 2415 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 2416 2417#if _LIBCPP_STD_VER > 14 2418template <class _Tp> 2419_LIBCPP_INLINE_VAR constexpr size_t is_bind_expression_v = is_bind_expression<_Tp>::value; 2420#endif 2421 2422template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 2423template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_placeholder 2424 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 2425 2426#if _LIBCPP_STD_VER > 14 2427template <class _Tp> 2428_LIBCPP_INLINE_VAR constexpr size_t is_placeholder_v = is_placeholder<_Tp>::value; 2429#endif 2430 2431namespace placeholders 2432{ 2433 2434template <int _Np> struct __ph {}; 2435 2436#if defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_LIBRARY) 2437_LIBCPP_FUNC_VIS extern const __ph<1> _1; 2438_LIBCPP_FUNC_VIS extern const __ph<2> _2; 2439_LIBCPP_FUNC_VIS extern const __ph<3> _3; 2440_LIBCPP_FUNC_VIS extern const __ph<4> _4; 2441_LIBCPP_FUNC_VIS extern const __ph<5> _5; 2442_LIBCPP_FUNC_VIS extern const __ph<6> _6; 2443_LIBCPP_FUNC_VIS extern const __ph<7> _7; 2444_LIBCPP_FUNC_VIS extern const __ph<8> _8; 2445_LIBCPP_FUNC_VIS extern const __ph<9> _9; 2446_LIBCPP_FUNC_VIS extern const __ph<10> _10; 2447#else 2448/* _LIBCPP_INLINE_VAR */ constexpr __ph<1> _1{}; 2449/* _LIBCPP_INLINE_VAR */ constexpr __ph<2> _2{}; 2450/* _LIBCPP_INLINE_VAR */ constexpr __ph<3> _3{}; 2451/* _LIBCPP_INLINE_VAR */ constexpr __ph<4> _4{}; 2452/* _LIBCPP_INLINE_VAR */ constexpr __ph<5> _5{}; 2453/* _LIBCPP_INLINE_VAR */ constexpr __ph<6> _6{}; 2454/* _LIBCPP_INLINE_VAR */ constexpr __ph<7> _7{}; 2455/* _LIBCPP_INLINE_VAR */ constexpr __ph<8> _8{}; 2456/* _LIBCPP_INLINE_VAR */ constexpr __ph<9> _9{}; 2457/* _LIBCPP_INLINE_VAR */ constexpr __ph<10> _10{}; 2458#endif // defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_LIBRARY) 2459 2460} // placeholders 2461 2462template<int _Np> 2463struct __is_placeholder<placeholders::__ph<_Np> > 2464 : public integral_constant<int, _Np> {}; 2465 2466 2467#ifndef _LIBCPP_CXX03_LANG 2468 2469template <class _Tp, class _Uj> 2470inline _LIBCPP_INLINE_VISIBILITY 2471_Tp& 2472__mu(reference_wrapper<_Tp> __t, _Uj&) 2473{ 2474 return __t.get(); 2475} 2476 2477template <class _Ti, class ..._Uj, size_t ..._Indx> 2478inline _LIBCPP_INLINE_VISIBILITY 2479typename __invoke_of<_Ti&, _Uj...>::type 2480__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 2481{ 2482 return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); 2483} 2484 2485template <class _Ti, class ..._Uj> 2486inline _LIBCPP_INLINE_VISIBILITY 2487typename __lazy_enable_if 2488< 2489 is_bind_expression<_Ti>::value, 2490 __invoke_of<_Ti&, _Uj...> 2491>::type 2492__mu(_Ti& __ti, tuple<_Uj...>& __uj) 2493{ 2494 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 2495 return __mu_expand(__ti, __uj, __indices()); 2496} 2497 2498template <bool IsPh, class _Ti, class _Uj> 2499struct __mu_return2 {}; 2500 2501template <class _Ti, class _Uj> 2502struct __mu_return2<true, _Ti, _Uj> 2503{ 2504 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 2505}; 2506 2507template <class _Ti, class _Uj> 2508inline _LIBCPP_INLINE_VISIBILITY 2509typename enable_if 2510< 2511 0 < is_placeholder<_Ti>::value, 2512 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 2513>::type 2514__mu(_Ti&, _Uj& __uj) 2515{ 2516 const size_t _Indx = is_placeholder<_Ti>::value - 1; 2517 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj)); 2518} 2519 2520template <class _Ti, class _Uj> 2521inline _LIBCPP_INLINE_VISIBILITY 2522typename enable_if 2523< 2524 !is_bind_expression<_Ti>::value && 2525 is_placeholder<_Ti>::value == 0 && 2526 !__is_reference_wrapper<_Ti>::value, 2527 _Ti& 2528>::type 2529__mu(_Ti& __ti, _Uj&) 2530{ 2531 return __ti; 2532} 2533 2534template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 2535 class _TupleUj> 2536struct __mu_return_impl; 2537 2538template <bool _Invokable, class _Ti, class ..._Uj> 2539struct __mu_return_invokable // false 2540{ 2541 typedef __nat type; 2542}; 2543 2544template <class _Ti, class ..._Uj> 2545struct __mu_return_invokable<true, _Ti, _Uj...> 2546{ 2547 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 2548}; 2549 2550template <class _Ti, class ..._Uj> 2551struct __mu_return_impl<_Ti, false, true, false, tuple<_Uj...> > 2552 : public __mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> 2553{ 2554}; 2555 2556template <class _Ti, class _TupleUj> 2557struct __mu_return_impl<_Ti, false, false, true, _TupleUj> 2558{ 2559 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 2560 _TupleUj>::type&& type; 2561}; 2562 2563template <class _Ti, class _TupleUj> 2564struct __mu_return_impl<_Ti, true, false, false, _TupleUj> 2565{ 2566 typedef typename _Ti::type& type; 2567}; 2568 2569template <class _Ti, class _TupleUj> 2570struct __mu_return_impl<_Ti, false, false, false, _TupleUj> 2571{ 2572 typedef _Ti& type; 2573}; 2574 2575template <class _Ti, class _TupleUj> 2576struct __mu_return 2577 : public __mu_return_impl<_Ti, 2578 __is_reference_wrapper<_Ti>::value, 2579 is_bind_expression<_Ti>::value, 2580 0 < is_placeholder<_Ti>::value && 2581 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, 2582 _TupleUj> 2583{ 2584}; 2585 2586template <class _Fp, class _BoundArgs, class _TupleUj> 2587struct __is_valid_bind_return 2588{ 2589 static const bool value = false; 2590}; 2591 2592template <class _Fp, class ..._BoundArgs, class _TupleUj> 2593struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 2594{ 2595 static const bool value = __invokable<_Fp, 2596 typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; 2597}; 2598 2599template <class _Fp, class ..._BoundArgs, class _TupleUj> 2600struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 2601{ 2602 static const bool value = __invokable<_Fp, 2603 typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value; 2604}; 2605 2606template <class _Fp, class _BoundArgs, class _TupleUj, 2607 bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value> 2608struct __bind_return; 2609 2610template <class _Fp, class ..._BoundArgs, class _TupleUj> 2611struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> 2612{ 2613 typedef typename __invoke_of 2614 < 2615 _Fp&, 2616 typename __mu_return 2617 < 2618 _BoundArgs, 2619 _TupleUj 2620 >::type... 2621 >::type type; 2622}; 2623 2624template <class _Fp, class ..._BoundArgs, class _TupleUj> 2625struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> 2626{ 2627 typedef typename __invoke_of 2628 < 2629 _Fp&, 2630 typename __mu_return 2631 < 2632 const _BoundArgs, 2633 _TupleUj 2634 >::type... 2635 >::type type; 2636}; 2637 2638template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 2639inline _LIBCPP_INLINE_VISIBILITY 2640typename __bind_return<_Fp, _BoundArgs, _Args>::type 2641__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 2642 _Args&& __args) 2643{ 2644 return _VSTD::__invoke(__f, _VSTD::__mu(_VSTD::get<_Indx>(__bound_args), __args)...); 2645} 2646 2647template<class _Fp, class ..._BoundArgs> 2648class __bind 2649 : public __weak_result_type<typename decay<_Fp>::type> 2650{ 2651protected: 2652 typedef typename decay<_Fp>::type _Fd; 2653 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 2654private: 2655 _Fd __f_; 2656 _Td __bound_args_; 2657 2658 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 2659public: 2660 template <class _Gp, class ..._BA, 2661 class = typename enable_if 2662 < 2663 is_constructible<_Fd, _Gp>::value && 2664 !is_same<typename remove_reference<_Gp>::type, 2665 __bind>::value 2666 >::type> 2667 _LIBCPP_INLINE_VISIBILITY 2668 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 2669 : __f_(_VSTD::forward<_Gp>(__f)), 2670 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 2671 2672 template <class ..._Args> 2673 _LIBCPP_INLINE_VISIBILITY 2674 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 2675 operator()(_Args&& ...__args) 2676 { 2677 return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), 2678 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2679 } 2680 2681 template <class ..._Args> 2682 _LIBCPP_INLINE_VISIBILITY 2683 typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type 2684 operator()(_Args&& ...__args) const 2685 { 2686 return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), 2687 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2688 } 2689}; 2690 2691template<class _Fp, class ..._BoundArgs> 2692struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 2693 2694template<class _Rp, class _Fp, class ..._BoundArgs> 2695class __bind_r 2696 : public __bind<_Fp, _BoundArgs...> 2697{ 2698 typedef __bind<_Fp, _BoundArgs...> base; 2699 typedef typename base::_Fd _Fd; 2700 typedef typename base::_Td _Td; 2701public: 2702 typedef _Rp result_type; 2703 2704 2705 template <class _Gp, class ..._BA, 2706 class = typename enable_if 2707 < 2708 is_constructible<_Fd, _Gp>::value && 2709 !is_same<typename remove_reference<_Gp>::type, 2710 __bind_r>::value 2711 >::type> 2712 _LIBCPP_INLINE_VISIBILITY 2713 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 2714 : base(_VSTD::forward<_Gp>(__f), 2715 _VSTD::forward<_BA>(__bound_args)...) {} 2716 2717 template <class ..._Args> 2718 _LIBCPP_INLINE_VISIBILITY 2719 typename enable_if 2720 < 2721 is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, 2722 result_type>::value || is_void<_Rp>::value, 2723 result_type 2724 >::type 2725 operator()(_Args&& ...__args) 2726 { 2727 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2728 return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); 2729 } 2730 2731 template <class ..._Args> 2732 _LIBCPP_INLINE_VISIBILITY 2733 typename enable_if 2734 < 2735 is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, 2736 result_type>::value || is_void<_Rp>::value, 2737 result_type 2738 >::type 2739 operator()(_Args&& ...__args) const 2740 { 2741 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2742 return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); 2743 } 2744}; 2745 2746template<class _Rp, class _Fp, class ..._BoundArgs> 2747struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 2748 2749template<class _Fp, class ..._BoundArgs> 2750inline _LIBCPP_INLINE_VISIBILITY 2751__bind<_Fp, _BoundArgs...> 2752bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2753{ 2754 typedef __bind<_Fp, _BoundArgs...> type; 2755 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2756} 2757 2758template<class _Rp, class _Fp, class ..._BoundArgs> 2759inline _LIBCPP_INLINE_VISIBILITY 2760__bind_r<_Rp, _Fp, _BoundArgs...> 2761bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2762{ 2763 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 2764 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2765} 2766 2767#endif // _LIBCPP_CXX03_LANG 2768 2769#if _LIBCPP_STD_VER > 14 2770 2771template <class _Fn, class ..._Args> 2772result_of_t<_Fn&&(_Args&&...)> 2773invoke(_Fn&& __f, _Args&&... __args) 2774 noexcept(noexcept(_VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...))) 2775{ 2776 return _VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); 2777} 2778 2779template <class _DecayFunc> 2780class _LIBCPP_TEMPLATE_VIS __not_fn_imp { 2781 _DecayFunc __fd; 2782 2783public: 2784 __not_fn_imp() = delete; 2785 2786 template <class ..._Args> 2787 _LIBCPP_INLINE_VISIBILITY 2788 auto operator()(_Args&& ...__args) & 2789 noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) 2790 -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) 2791 { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } 2792 2793 template <class ..._Args> 2794 _LIBCPP_INLINE_VISIBILITY 2795 auto operator()(_Args&& ...__args) && 2796 noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) 2797 -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) 2798 { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); } 2799 2800 template <class ..._Args> 2801 _LIBCPP_INLINE_VISIBILITY 2802 auto operator()(_Args&& ...__args) const& 2803 noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) 2804 -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) 2805 { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } 2806 2807 2808 template <class ..._Args> 2809 _LIBCPP_INLINE_VISIBILITY 2810 auto operator()(_Args&& ...__args) const&& 2811 noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) 2812 -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) 2813 { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); } 2814 2815private: 2816 template <class _RawFunc, 2817 class = enable_if_t<!is_same<decay_t<_RawFunc>, __not_fn_imp>::value>> 2818 _LIBCPP_INLINE_VISIBILITY 2819 explicit __not_fn_imp(_RawFunc&& __rf) 2820 : __fd(_VSTD::forward<_RawFunc>(__rf)) {} 2821 2822 template <class _RawFunc> 2823 friend inline _LIBCPP_INLINE_VISIBILITY 2824 __not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&&); 2825}; 2826 2827template <class _RawFunc> 2828inline _LIBCPP_INLINE_VISIBILITY 2829__not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&& __fn) { 2830 return __not_fn_imp<decay_t<_RawFunc>>(_VSTD::forward<_RawFunc>(__fn)); 2831} 2832 2833#endif 2834 2835// struct hash<T*> in <memory> 2836 2837template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2> 2838pair<_ForwardIterator1, _ForwardIterator1> _LIBCPP_CONSTEXPR_AFTER_CXX11 2839__search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, 2840 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred, 2841 forward_iterator_tag, forward_iterator_tag) 2842{ 2843 if (__first2 == __last2) 2844 return make_pair(__first1, __first1); // Everything matches an empty sequence 2845 while (true) 2846 { 2847 // Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks 2848 while (true) 2849 { 2850 if (__first1 == __last1) // return __last1 if no element matches *__first2 2851 return make_pair(__last1, __last1); 2852 if (__pred(*__first1, *__first2)) 2853 break; 2854 ++__first1; 2855 } 2856 // *__first1 matches *__first2, now match elements after here 2857 _ForwardIterator1 __m1 = __first1; 2858 _ForwardIterator2 __m2 = __first2; 2859 while (true) 2860 { 2861 if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern) 2862 return make_pair(__first1, __m1); 2863 if (++__m1 == __last1) // Otherwise if source exhaused, pattern not found 2864 return make_pair(__last1, __last1); 2865 if (!__pred(*__m1, *__m2)) // if there is a mismatch, restart with a new __first1 2866 { 2867 ++__first1; 2868 break; 2869 } // else there is a match, check next elements 2870 } 2871 } 2872} 2873 2874template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2> 2875_LIBCPP_CONSTEXPR_AFTER_CXX11 2876pair<_RandomAccessIterator1, _RandomAccessIterator1> 2877__search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, 2878 _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred, 2879 random_access_iterator_tag, random_access_iterator_tag) 2880{ 2881 typedef typename iterator_traits<_RandomAccessIterator1>::difference_type _D1; 2882 typedef typename iterator_traits<_RandomAccessIterator2>::difference_type _D2; 2883 // Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern 2884 const _D2 __len2 = __last2 - __first2; 2885 if (__len2 == 0) 2886 return make_pair(__first1, __first1); 2887 const _D1 __len1 = __last1 - __first1; 2888 if (__len1 < __len2) 2889 return make_pair(__last1, __last1); 2890 const _RandomAccessIterator1 __s = __last1 - (__len2 - 1); // Start of pattern match can't go beyond here 2891 2892 while (true) 2893 { 2894 while (true) 2895 { 2896 if (__first1 == __s) 2897 return make_pair(__last1, __last1); 2898 if (__pred(*__first1, *__first2)) 2899 break; 2900 ++__first1; 2901 } 2902 2903 _RandomAccessIterator1 __m1 = __first1; 2904 _RandomAccessIterator2 __m2 = __first2; 2905 while (true) 2906 { 2907 if (++__m2 == __last2) 2908 return make_pair(__first1, __first1 + __len2); 2909 ++__m1; // no need to check range on __m1 because __s guarantees we have enough source 2910 if (!__pred(*__m1, *__m2)) 2911 { 2912 ++__first1; 2913 break; 2914 } 2915 } 2916 } 2917} 2918 2919#if _LIBCPP_STD_VER > 14 2920 2921// default searcher 2922template<class _ForwardIterator, class _BinaryPredicate = equal_to<>> 2923class _LIBCPP_TYPE_VIS default_searcher { 2924public: 2925 _LIBCPP_INLINE_VISIBILITY 2926 default_searcher(_ForwardIterator __f, _ForwardIterator __l, 2927 _BinaryPredicate __p = _BinaryPredicate()) 2928 : __first_(__f), __last_(__l), __pred_(__p) {} 2929 2930 template <typename _ForwardIterator2> 2931 _LIBCPP_INLINE_VISIBILITY 2932 pair<_ForwardIterator2, _ForwardIterator2> 2933 operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const 2934 { 2935 return _VSTD::__search(__f, __l, __first_, __last_, __pred_, 2936 typename _VSTD::iterator_traits<_ForwardIterator>::iterator_category(), 2937 typename _VSTD::iterator_traits<_ForwardIterator2>::iterator_category()); 2938 } 2939 2940private: 2941 _ForwardIterator __first_; 2942 _ForwardIterator __last_; 2943 _BinaryPredicate __pred_; 2944 }; 2945 2946#endif // _LIBCPP_STD_VER > 14 2947 2948#if _LIBCPP_STD_VER > 17 2949template <class _Tp> 2950using unwrap_reference_t = typename unwrap_reference<_Tp>::type; 2951 2952template <class _Tp> 2953using unwrap_ref_decay_t = typename unwrap_ref_decay<_Tp>::type; 2954#endif // > C++17 2955 2956template <class _Container, class _Predicate> 2957inline void __libcpp_erase_if_container( _Container& __c, _Predicate __pred) 2958{ 2959 for (typename _Container::iterator __iter = __c.begin(), __last = __c.end(); __iter != __last;) 2960 { 2961 if (__pred(*__iter)) 2962 __iter = __c.erase(__iter); 2963 else 2964 ++__iter; 2965 } 2966} 2967 2968_LIBCPP_END_NAMESPACE_STD 2969 2970#endif // _LIBCPP_FUNCTIONAL 2971