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> 72struct plus : binary_function<T, T, T> 73{ 74 T operator()(const T& x, const T& y) const; 75}; 76 77template <class T> 78struct minus : binary_function<T, T, T> 79{ 80 T operator()(const T& x, const T& y) const; 81}; 82 83template <class T> 84struct multiplies : binary_function<T, T, T> 85{ 86 T operator()(const T& x, const T& y) const; 87}; 88 89template <class T> 90struct divides : binary_function<T, T, T> 91{ 92 T operator()(const T& x, const T& y) const; 93}; 94 95template <class T> 96struct modulus : binary_function<T, T, T> 97{ 98 T operator()(const T& x, const T& y) const; 99}; 100 101template <class T> 102struct negate : unary_function<T, T> 103{ 104 T operator()(const T& x) const; 105}; 106 107template <class T> 108struct equal_to : binary_function<T, T, bool> 109{ 110 bool operator()(const T& x, const T& y) const; 111}; 112 113template <class T> 114struct not_equal_to : binary_function<T, T, bool> 115{ 116 bool operator()(const T& x, const T& y) const; 117}; 118 119template <class T> 120struct greater : binary_function<T, T, bool> 121{ 122 bool operator()(const T& x, const T& y) const; 123}; 124 125template <class T> 126struct less : binary_function<T, T, bool> 127{ 128 bool operator()(const T& x, const T& y) const; 129}; 130 131template <class T> 132struct greater_equal : binary_function<T, T, bool> 133{ 134 bool operator()(const T& x, const T& y) const; 135}; 136 137template <class T> 138struct less_equal : binary_function<T, T, bool> 139{ 140 bool operator()(const T& x, const T& y) const; 141}; 142 143template <class T> 144struct logical_and : binary_function<T, T, bool> 145{ 146 bool operator()(const T& x, const T& y) const; 147}; 148 149template <class T> 150struct logical_or : binary_function<T, T, bool> 151{ 152 bool operator()(const T& x, const T& y) const; 153}; 154 155template <class T> 156struct logical_not : unary_function<T, bool> 157{ 158 bool operator()(const T& x) const; 159}; 160 161template <class Predicate> 162class unary_negate 163 : public unary_function<typename Predicate::argument_type, bool> 164{ 165public: 166 explicit unary_negate(const Predicate& pred); 167 bool operator()(const typename Predicate::argument_type& x) const; 168}; 169 170template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred); 171 172template <class Predicate> 173class binary_negate 174 : public binary_function<typename Predicate::first_argument_type, 175 typename Predicate::second_argument_type, 176 bool> 177{ 178public: 179 explicit binary_negate(const Predicate& pred); 180 bool operator()(const typename Predicate::first_argument_type& x, 181 const typename Predicate::second_argument_type& y) const; 182}; 183 184template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred); 185 186template<class T> struct is_bind_expression; 187template<class T> struct is_placeholder; 188 189template<class Fn, class... BoundArgs> 190 unspecified bind(Fn&&, BoundArgs&&...); 191template<class R, class Fn, class... BoundArgs> 192 unspecified bind(Fn&&, BoundArgs&&...); 193 194namespace placeholders { 195 // M is the implementation-defined number of placeholders 196 extern unspecified _1; 197 extern unspecified _2; 198 . 199 . 200 . 201 extern unspecified _Mp; 202} 203 204template <class Operation> 205class binder1st 206 : public unary_function<typename Operation::second_argument_type, 207 typename Operation::result_type> 208{ 209protected: 210 Operation op; 211 typename Operation::first_argument_type value; 212public: 213 binder1st(const Operation& x, const typename Operation::first_argument_type y); 214 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 215 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 216}; 217 218template <class Operation, class T> 219binder1st<Operation> bind1st(const Operation& op, const T& x); 220 221template <class Operation> 222class binder2nd 223 : public unary_function<typename Operation::first_argument_type, 224 typename Operation::result_type> 225{ 226protected: 227 Operation op; 228 typename Operation::second_argument_type value; 229public: 230 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 231 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 232 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 233}; 234 235template <class Operation, class T> 236binder2nd<Operation> bind2nd(const Operation& op, const T& x); 237 238template <class Arg, class Result> 239class pointer_to_unary_function : public unary_function<Arg, Result> 240{ 241public: 242 explicit pointer_to_unary_function(Result (*f)(Arg)); 243 Result operator()(Arg x) const; 244}; 245 246template <class Arg, class Result> 247pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); 248 249template <class Arg1, class Arg2, class Result> 250class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 251{ 252public: 253 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 254 Result operator()(Arg1 x, Arg2 y) const; 255}; 256 257template <class Arg1, class Arg2, class Result> 258pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); 259 260template<class S, class T> 261class mem_fun_t : public unary_function<T*, S> 262{ 263public: 264 explicit mem_fun_t(S (T::*p)()); 265 S operator()(T* p) const; 266}; 267 268template<class S, class T, class A> 269class mem_fun1_t : public binary_function<T*, A, S> 270{ 271public: 272 explicit mem_fun1_t(S (T::*p)(A)); 273 S operator()(T* p, A x) const; 274}; 275 276template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); 277template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); 278 279template<class S, class T> 280class mem_fun_ref_t : public unary_function<T, S> 281{ 282public: 283 explicit mem_fun_ref_t(S (T::*p)()); 284 S operator()(T& p) const; 285}; 286 287template<class S, class T, class A> 288class mem_fun1_ref_t : public binary_function<T, A, S> 289{ 290public: 291 explicit mem_fun1_ref_t(S (T::*p)(A)); 292 S operator()(T& p, A x) const; 293}; 294 295template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); 296template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); 297 298template <class S, class T> 299class const_mem_fun_t : public unary_function<const T*, S> 300{ 301public: 302 explicit const_mem_fun_t(S (T::*p)() const); 303 S operator()(const T* p) const; 304}; 305 306template <class S, class T, class A> 307class const_mem_fun1_t : public binary_function<const T*, A, S> 308{ 309public: 310 explicit const_mem_fun1_t(S (T::*p)(A) const); 311 S operator()(const T* p, A x) const; 312}; 313 314template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); 315template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); 316 317template <class S, class T> 318class const_mem_fun_ref_t : public unary_function<T, S> 319{ 320public: 321 explicit const_mem_fun_ref_t(S (T::*p)() const); 322 S operator()(const T& p) const; 323}; 324 325template <class S, class T, class A> 326class const_mem_fun1_ref_t : public binary_function<T, A, S> 327{ 328public: 329 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 330 S operator()(const T& p, A x) const; 331}; 332 333template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); 334template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); 335 336template<class R, class T> unspecified mem_fn(R T::*); 337template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...)); 338template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const); 339template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile); 340template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile); 341template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) &); 342template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const &); 343template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile &); 344template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile &); 345template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) &&); 346template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const &&); 347template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile &&); 348template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile &&); 349 350class bad_function_call 351 : public exception 352{ 353}; 354 355template<class> class function; // undefined 356 357template<class R, class... ArgTypes> 358class function<R(ArgTypes...)> 359 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 360 // ArgTypes contains T1 361 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 362 // ArgTypes contains T1 and T2 363{ 364public: 365 typedef R result_type; 366 367 // construct/copy/destroy: 368 function() noexcept; 369 function(nullptr_t) noexcept; 370 function(const function&); 371 function(function&&) noexcept; 372 template<class F> 373 function(F); 374 template<Allocator Alloc> 375 function(allocator_arg_t, const Alloc&) noexcept; 376 template<Allocator Alloc> 377 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; 378 template<Allocator Alloc> 379 function(allocator_arg_t, const Alloc&, const function&); 380 template<Allocator Alloc> 381 function(allocator_arg_t, const Alloc&, function&&); 382 template<class F, Allocator Alloc> 383 function(allocator_arg_t, const Alloc&, F); 384 385 function& operator=(const function&); 386 function& operator=(function&&) noexcept; 387 function& operator=(nullptr_t) noexcept; 388 template<class F> 389 function& operator=(F&&); 390 template<class F> 391 function& operator=(reference_wrapper<F>) noexcept; 392 393 ~function(); 394 395 // function modifiers: 396 void swap(function&) noexcept; 397 template<class F, class Alloc> 398 void assign(F&&, const Alloc&); 399 400 // function capacity: 401 explicit operator bool() const noexcept; 402 403 // function invocation: 404 R operator()(ArgTypes...) const; 405 406 // function target access: 407 const std::type_info& target_type() const noexcept; 408 template <typename T> T* target() noexcept; 409 template <typename T> const T* target() const noexcept; 410}; 411 412// Null pointer comparisons: 413template <class R, class ... ArgTypes> 414 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 415 416template <class R, class ... ArgTypes> 417 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 418 419template <class R, class ... ArgTypes> 420 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 421 422template <class R, class ... ArgTypes> 423 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 424 425// specialized algorithms: 426template <class R, class ... ArgTypes> 427 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 428 429template <class T> struct hash; 430 431template <> struct hash<bool>; 432template <> struct hash<char>; 433template <> struct hash<signed char>; 434template <> struct hash<unsigned char>; 435template <> struct hash<char16_t>; 436template <> struct hash<char32_t>; 437template <> struct hash<wchar_t>; 438template <> struct hash<short>; 439template <> struct hash<unsigned short>; 440template <> struct hash<int>; 441template <> struct hash<unsigned int>; 442template <> struct hash<long>; 443template <> struct hash<long long>; 444template <> struct hash<unsigned long>; 445template <> struct hash<unsigned long long>; 446 447template <> struct hash<float>; 448template <> struct hash<double>; 449template <> struct hash<long double>; 450 451template<class T> struct hash<T*>; 452 453} // std 454 455POLICY: For non-variadic implementations, the number of arguments is limited 456 to 3. It is hoped that the need for non-variadic implementations 457 will be minimal. 458 459*/ 460 461#include <__config> 462#include <type_traits> 463#include <typeinfo> 464#include <exception> 465#include <memory> 466#include <tuple> 467 468#include <__functional_base> 469 470#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 471#pragma GCC system_header 472#endif 473 474_LIBCPP_BEGIN_NAMESPACE_STD 475 476template <class _Tp> 477struct _LIBCPP_VISIBLE plus : binary_function<_Tp, _Tp, _Tp> 478{ 479 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 480 {return __x + __y;} 481}; 482 483template <class _Tp> 484struct _LIBCPP_VISIBLE minus : binary_function<_Tp, _Tp, _Tp> 485{ 486 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 487 {return __x - __y;} 488}; 489 490template <class _Tp> 491struct _LIBCPP_VISIBLE multiplies : binary_function<_Tp, _Tp, _Tp> 492{ 493 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 494 {return __x * __y;} 495}; 496 497template <class _Tp> 498struct _LIBCPP_VISIBLE divides : binary_function<_Tp, _Tp, _Tp> 499{ 500 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 501 {return __x / __y;} 502}; 503 504template <class _Tp> 505struct _LIBCPP_VISIBLE modulus : binary_function<_Tp, _Tp, _Tp> 506{ 507 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 508 {return __x % __y;} 509}; 510 511template <class _Tp> 512struct _LIBCPP_VISIBLE negate : unary_function<_Tp, _Tp> 513{ 514 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x) const 515 {return -__x;} 516}; 517 518template <class _Tp> 519struct _LIBCPP_VISIBLE equal_to : binary_function<_Tp, _Tp, bool> 520{ 521 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 522 {return __x == __y;} 523}; 524 525template <class _Tp> 526struct _LIBCPP_VISIBLE not_equal_to : binary_function<_Tp, _Tp, bool> 527{ 528 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 529 {return __x != __y;} 530}; 531 532template <class _Tp> 533struct _LIBCPP_VISIBLE greater : binary_function<_Tp, _Tp, bool> 534{ 535 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 536 {return __x > __y;} 537}; 538 539// less in <__functional_base> 540 541template <class _Tp> 542struct _LIBCPP_VISIBLE greater_equal : binary_function<_Tp, _Tp, bool> 543{ 544 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 545 {return __x >= __y;} 546}; 547 548template <class _Tp> 549struct _LIBCPP_VISIBLE less_equal : binary_function<_Tp, _Tp, bool> 550{ 551 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 552 {return __x <= __y;} 553}; 554 555template <class _Tp> 556struct _LIBCPP_VISIBLE logical_and : binary_function<_Tp, _Tp, bool> 557{ 558 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 559 {return __x && __y;} 560}; 561 562template <class _Tp> 563struct _LIBCPP_VISIBLE logical_or : binary_function<_Tp, _Tp, bool> 564{ 565 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const 566 {return __x || __y;} 567}; 568 569template <class _Tp> 570struct _LIBCPP_VISIBLE logical_not : unary_function<_Tp, bool> 571{ 572 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x) const 573 {return !__x;} 574}; 575 576template <class _Tp> 577struct _LIBCPP_VISIBLE bit_and : binary_function<_Tp, _Tp, _Tp> 578{ 579 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 580 {return __x & __y;} 581}; 582 583template <class _Tp> 584struct _LIBCPP_VISIBLE bit_or : binary_function<_Tp, _Tp, _Tp> 585{ 586 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 587 {return __x | __y;} 588}; 589 590template <class _Tp> 591struct _LIBCPP_VISIBLE bit_xor : binary_function<_Tp, _Tp, _Tp> 592{ 593 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const 594 {return __x ^ __y;} 595}; 596 597template <class _Predicate> 598class _LIBCPP_VISIBLE unary_negate 599 : public unary_function<typename _Predicate::argument_type, bool> 600{ 601 _Predicate __pred_; 602public: 603 _LIBCPP_INLINE_VISIBILITY explicit unary_negate(const _Predicate& __pred) 604 : __pred_(__pred) {} 605 _LIBCPP_INLINE_VISIBILITY bool operator()(const typename _Predicate::argument_type& __x) const 606 {return !__pred_(__x);} 607}; 608 609template <class _Predicate> 610inline _LIBCPP_INLINE_VISIBILITY 611unary_negate<_Predicate> 612not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 613 614template <class _Predicate> 615class _LIBCPP_VISIBLE binary_negate 616 : public binary_function<typename _Predicate::first_argument_type, 617 typename _Predicate::second_argument_type, 618 bool> 619{ 620 _Predicate __pred_; 621public: 622 _LIBCPP_INLINE_VISIBILITY explicit binary_negate(const _Predicate& __pred) 623 : __pred_(__pred) {} 624 _LIBCPP_INLINE_VISIBILITY bool operator()(const typename _Predicate::first_argument_type& __x, 625 const typename _Predicate::second_argument_type& __y) const 626 {return !__pred_(__x, __y);} 627}; 628 629template <class _Predicate> 630inline _LIBCPP_INLINE_VISIBILITY 631binary_negate<_Predicate> 632not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 633 634template <class __Operation> 635class _LIBCPP_VISIBLE binder1st 636 : public unary_function<typename __Operation::second_argument_type, 637 typename __Operation::result_type> 638{ 639protected: 640 __Operation op; 641 typename __Operation::first_argument_type value; 642public: 643 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 644 const typename __Operation::first_argument_type __y) 645 : op(__x), value(__y) {} 646 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 647 (typename __Operation::second_argument_type& __x) const 648 {return op(value, __x);} 649 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 650 (const typename __Operation::second_argument_type& __x) const 651 {return op(value, __x);} 652}; 653 654template <class __Operation, class _Tp> 655inline _LIBCPP_INLINE_VISIBILITY 656binder1st<__Operation> 657bind1st(const __Operation& __op, const _Tp& __x) 658 {return binder1st<__Operation>(__op, __x);} 659 660template <class __Operation> 661class _LIBCPP_VISIBLE binder2nd 662 : public unary_function<typename __Operation::first_argument_type, 663 typename __Operation::result_type> 664{ 665protected: 666 __Operation op; 667 typename __Operation::second_argument_type value; 668public: 669 _LIBCPP_INLINE_VISIBILITY 670 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 671 : op(__x), value(__y) {} 672 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 673 ( typename __Operation::first_argument_type& __x) const 674 {return op(__x, value);} 675 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 676 (const typename __Operation::first_argument_type& __x) const 677 {return op(__x, value);} 678}; 679 680template <class __Operation, class _Tp> 681inline _LIBCPP_INLINE_VISIBILITY 682binder2nd<__Operation> 683bind2nd(const __Operation& __op, const _Tp& __x) 684 {return binder2nd<__Operation>(__op, __x);} 685 686template <class _Arg, class _Result> 687class _LIBCPP_VISIBLE pointer_to_unary_function 688 : public unary_function<_Arg, _Result> 689{ 690 _Result (*__f_)(_Arg); 691public: 692 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 693 : __f_(__f) {} 694 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 695 {return __f_(__x);} 696}; 697 698template <class _Arg, class _Result> 699inline _LIBCPP_INLINE_VISIBILITY 700pointer_to_unary_function<_Arg,_Result> 701ptr_fun(_Result (*__f)(_Arg)) 702 {return pointer_to_unary_function<_Arg,_Result>(__f);} 703 704template <class _Arg1, class _Arg2, class _Result> 705class _LIBCPP_VISIBLE pointer_to_binary_function 706 : public binary_function<_Arg1, _Arg2, _Result> 707{ 708 _Result (*__f_)(_Arg1, _Arg2); 709public: 710 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 711 : __f_(__f) {} 712 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 713 {return __f_(__x, __y);} 714}; 715 716template <class _Arg1, class _Arg2, class _Result> 717inline _LIBCPP_INLINE_VISIBILITY 718pointer_to_binary_function<_Arg1,_Arg2,_Result> 719ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 720 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 721 722template<class _Sp, class _Tp> 723class _LIBCPP_VISIBLE mem_fun_t : public unary_function<_Tp*, _Sp> 724{ 725 _Sp (_Tp::*__p_)(); 726public: 727 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 728 : __p_(__p) {} 729 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 730 {return (__p->*__p_)();} 731}; 732 733template<class _Sp, class _Tp, class _Ap> 734class _LIBCPP_VISIBLE mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp> 735{ 736 _Sp (_Tp::*__p_)(_Ap); 737public: 738 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 739 : __p_(__p) {} 740 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 741 {return (__p->*__p_)(__x);} 742}; 743 744template<class _Sp, class _Tp> 745inline _LIBCPP_INLINE_VISIBILITY 746mem_fun_t<_Sp,_Tp> 747mem_fun(_Sp (_Tp::*__f)()) 748 {return mem_fun_t<_Sp,_Tp>(__f);} 749 750template<class _Sp, class _Tp, class _Ap> 751inline _LIBCPP_INLINE_VISIBILITY 752mem_fun1_t<_Sp,_Tp,_Ap> 753mem_fun(_Sp (_Tp::*__f)(_Ap)) 754 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 755 756template<class _Sp, class _Tp> 757class _LIBCPP_VISIBLE mem_fun_ref_t : public unary_function<_Tp, _Sp> 758{ 759 _Sp (_Tp::*__p_)(); 760public: 761 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 762 : __p_(__p) {} 763 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 764 {return (__p.*__p_)();} 765}; 766 767template<class _Sp, class _Tp, class _Ap> 768class _LIBCPP_VISIBLE mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp> 769{ 770 _Sp (_Tp::*__p_)(_Ap); 771public: 772 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 773 : __p_(__p) {} 774 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 775 {return (__p.*__p_)(__x);} 776}; 777 778template<class _Sp, class _Tp> 779inline _LIBCPP_INLINE_VISIBILITY 780mem_fun_ref_t<_Sp,_Tp> 781mem_fun_ref(_Sp (_Tp::*__f)()) 782 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 783 784template<class _Sp, class _Tp, class _Ap> 785inline _LIBCPP_INLINE_VISIBILITY 786mem_fun1_ref_t<_Sp,_Tp,_Ap> 787mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 788 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 789 790template <class _Sp, class _Tp> 791class _LIBCPP_VISIBLE const_mem_fun_t : public unary_function<const _Tp*, _Sp> 792{ 793 _Sp (_Tp::*__p_)() const; 794public: 795 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 796 : __p_(__p) {} 797 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 798 {return (__p->*__p_)();} 799}; 800 801template <class _Sp, class _Tp, class _Ap> 802class _LIBCPP_VISIBLE const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp> 803{ 804 _Sp (_Tp::*__p_)(_Ap) const; 805public: 806 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 807 : __p_(__p) {} 808 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 809 {return (__p->*__p_)(__x);} 810}; 811 812template <class _Sp, class _Tp> 813inline _LIBCPP_INLINE_VISIBILITY 814const_mem_fun_t<_Sp,_Tp> 815mem_fun(_Sp (_Tp::*__f)() const) 816 {return const_mem_fun_t<_Sp,_Tp>(__f);} 817 818template <class _Sp, class _Tp, class _Ap> 819inline _LIBCPP_INLINE_VISIBILITY 820const_mem_fun1_t<_Sp,_Tp,_Ap> 821mem_fun(_Sp (_Tp::*__f)(_Ap) const) 822 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 823 824template <class _Sp, class _Tp> 825class _LIBCPP_VISIBLE const_mem_fun_ref_t : public unary_function<_Tp, _Sp> 826{ 827 _Sp (_Tp::*__p_)() const; 828public: 829 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 830 : __p_(__p) {} 831 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 832 {return (__p.*__p_)();} 833}; 834 835template <class _Sp, class _Tp, class _Ap> 836class _LIBCPP_VISIBLE const_mem_fun1_ref_t 837 : public binary_function<_Tp, _Ap, _Sp> 838{ 839 _Sp (_Tp::*__p_)(_Ap) const; 840public: 841 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 842 : __p_(__p) {} 843 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 844 {return (__p.*__p_)(__x);} 845}; 846 847template <class _Sp, class _Tp> 848inline _LIBCPP_INLINE_VISIBILITY 849const_mem_fun_ref_t<_Sp,_Tp> 850mem_fun_ref(_Sp (_Tp::*__f)() const) 851 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 852 853template <class _Sp, class _Tp, class _Ap> 854inline _LIBCPP_INLINE_VISIBILITY 855const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 856mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 857 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 858 859#ifdef _LIBCPP_HAS_NO_VARIADICS 860 861#include <__functional_03> 862 863#else // _LIBCPP_HAS_NO_VARIADICS 864 865template <class _Tp> 866class __mem_fn 867 : public __weak_result_type<_Tp> 868{ 869public: 870 // types 871 typedef _Tp type; 872private: 873 type __f_; 874 875public: 876 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) : __f_(__f) {} 877 878 // invoke 879 template <class... _ArgTypes> 880 _LIBCPP_INLINE_VISIBILITY 881 typename __invoke_return<type, _ArgTypes...>::type 882 operator() (_ArgTypes&&... __args) 883 { 884 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 885 } 886}; 887 888template<class _Rp, class _Tp> 889inline _LIBCPP_INLINE_VISIBILITY 890__mem_fn<_Rp _Tp::*> 891mem_fn(_Rp _Tp::* __pm) 892{ 893 return __mem_fn<_Rp _Tp::*>(__pm); 894} 895 896template<class _Rp, class _Tp, class ..._Args> 897inline _LIBCPP_INLINE_VISIBILITY 898__mem_fn<_Rp (_Tp::*)(_Args...)> 899mem_fn(_Rp (_Tp::* __pm)(_Args...)) 900{ 901 return __mem_fn<_Rp (_Tp::*)(_Args...)>(__pm); 902} 903 904template<class _Rp, class _Tp, class ..._Args> 905inline _LIBCPP_INLINE_VISIBILITY 906__mem_fn<_Rp (_Tp::*)(_Args...) const> 907mem_fn(_Rp (_Tp::* __pm)(_Args...) const) 908{ 909 return __mem_fn<_Rp (_Tp::*)(_Args...) const>(__pm); 910} 911 912template<class _Rp, class _Tp, class ..._Args> 913inline _LIBCPP_INLINE_VISIBILITY 914__mem_fn<_Rp (_Tp::*)(_Args...) volatile> 915mem_fn(_Rp (_Tp::* __pm)(_Args...) volatile) 916{ 917 return __mem_fn<_Rp (_Tp::*)(_Args...) volatile>(__pm); 918} 919 920template<class _Rp, class _Tp, class ..._Args> 921inline _LIBCPP_INLINE_VISIBILITY 922__mem_fn<_Rp (_Tp::*)(_Args...) const volatile> 923mem_fn(_Rp (_Tp::* __pm)(_Args...) const volatile) 924{ 925 return __mem_fn<_Rp (_Tp::*)(_Args...) const volatile>(__pm); 926} 927 928// bad_function_call 929 930class _LIBCPP_EXCEPTION_ABI bad_function_call 931 : public exception 932{ 933}; 934 935template<class _Fp> class _LIBCPP_VISIBLE function; // undefined 936 937namespace __function 938{ 939 940template<class _Rp, class ..._ArgTypes> 941struct __maybe_derive_from_unary_function 942{ 943}; 944 945template<class _Rp, class _A1> 946struct __maybe_derive_from_unary_function<_Rp(_A1)> 947 : public unary_function<_A1, _Rp> 948{ 949}; 950 951template<class _Rp, class ..._ArgTypes> 952struct __maybe_derive_from_binary_function 953{ 954}; 955 956template<class _Rp, class _A1, class _A2> 957struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 958 : public binary_function<_A1, _A2, _Rp> 959{ 960}; 961 962template<class _Fp> class __base; 963 964template<class _Rp, class ..._ArgTypes> 965class __base<_Rp(_ArgTypes...)> 966{ 967 __base(const __base&); 968 __base& operator=(const __base&); 969public: 970 _LIBCPP_INLINE_VISIBILITY __base() {} 971 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 972 virtual __base* __clone() const = 0; 973 virtual void __clone(__base*) const = 0; 974 virtual void destroy() _NOEXCEPT = 0; 975 virtual void destroy_deallocate() _NOEXCEPT = 0; 976 virtual _Rp operator()(_ArgTypes&& ...) = 0; 977#ifndef _LIBCPP_NO_RTTI 978 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 979 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 980#endif // _LIBCPP_NO_RTTI 981}; 982 983template<class _FD, class _Alloc, class _FB> class __func; 984 985template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 986class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 987 : public __base<_Rp(_ArgTypes...)> 988{ 989 __compressed_pair<_Fp, _Alloc> __f_; 990public: 991 _LIBCPP_INLINE_VISIBILITY 992 explicit __func(_Fp&& __f) 993 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 994 _VSTD::forward_as_tuple()) {} 995 _LIBCPP_INLINE_VISIBILITY 996 explicit __func(const _Fp& __f, const _Alloc& __a) 997 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 998 _VSTD::forward_as_tuple(__a)) {} 999 1000 _LIBCPP_INLINE_VISIBILITY 1001 explicit __func(const _Fp& __f, _Alloc&& __a) 1002 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1003 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1004 1005 _LIBCPP_INLINE_VISIBILITY 1006 explicit __func(_Fp&& __f, _Alloc&& __a) 1007 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1008 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1009 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1010 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1011 virtual void destroy() _NOEXCEPT; 1012 virtual void destroy_deallocate() _NOEXCEPT; 1013 virtual _Rp operator()(_ArgTypes&& ... __arg); 1014#ifndef _LIBCPP_NO_RTTI 1015 virtual const void* target(const type_info&) const _NOEXCEPT; 1016 virtual const std::type_info& target_type() const _NOEXCEPT; 1017#endif // _LIBCPP_NO_RTTI 1018}; 1019 1020template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1021__base<_Rp(_ArgTypes...)>* 1022__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1023{ 1024 typedef typename _Alloc::template rebind<__func>::other _Ap; 1025 _Ap __a(__f_.second()); 1026 typedef __allocator_destructor<_Ap> _Dp; 1027 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1028 ::new (__hold.get()) __func(__f_.first(), _Alloc(__a)); 1029 return __hold.release(); 1030} 1031 1032template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1033void 1034__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1035{ 1036 ::new (__p) __func(__f_.first(), __f_.second()); 1037} 1038 1039template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1040void 1041__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1042{ 1043 __f_.~__compressed_pair<_Fp, _Alloc>(); 1044} 1045 1046template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1047void 1048__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1049{ 1050 typedef typename _Alloc::template rebind<__func>::other _Ap; 1051 _Ap __a(__f_.second()); 1052 __f_.~__compressed_pair<_Fp, _Alloc>(); 1053 __a.deallocate(this, 1); 1054} 1055 1056template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1057_Rp 1058__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1059{ 1060 return __invoke(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...); 1061} 1062 1063#ifndef _LIBCPP_NO_RTTI 1064 1065template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1066const void* 1067__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1068{ 1069 if (__ti == typeid(_Fp)) 1070 return &__f_.first(); 1071 return (const void*)0; 1072} 1073 1074template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1075const std::type_info& 1076__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1077{ 1078 return typeid(_Fp); 1079} 1080 1081#endif // _LIBCPP_NO_RTTI 1082 1083} // __function 1084 1085template<class _Rp, class ..._ArgTypes> 1086class _LIBCPP_VISIBLE function<_Rp(_ArgTypes...)> 1087 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 1088 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 1089{ 1090 typedef __function::__base<_Rp(_ArgTypes...)> __base; 1091 aligned_storage<3*sizeof(void*)>::type __buf_; 1092 __base* __f_; 1093 1094 template <class _Fp> 1095 _LIBCPP_INLINE_VISIBILITY 1096 static bool __not_null(const _Fp&) {return true;} 1097 template <class _R2, class ..._Ap> 1098 _LIBCPP_INLINE_VISIBILITY 1099 static bool __not_null(_R2 (*__p)(_Ap...)) {return __p;} 1100 template <class _R2, class _Cp, class ..._Ap> 1101 _LIBCPP_INLINE_VISIBILITY 1102 static bool __not_null(_R2 (_Cp::*__p)(_Ap...)) {return __p;} 1103 template <class _R2, class _Cp, class ..._Ap> 1104 _LIBCPP_INLINE_VISIBILITY 1105 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const) {return __p;} 1106 template <class _R2, class _Cp, class ..._Ap> 1107 _LIBCPP_INLINE_VISIBILITY 1108 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) volatile) {return __p;} 1109 template <class _R2, class _Cp, class ..._Ap> 1110 _LIBCPP_INLINE_VISIBILITY 1111 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const volatile) {return __p;} 1112 template <class _R2, class ..._Ap> 1113 _LIBCPP_INLINE_VISIBILITY 1114 static bool __not_null(const function<_Rp(_Ap...)>& __p) {return __p;} 1115 1116 template <class _Fp, bool = !is_same<_Fp, function>::value && 1117 __invokable<_Fp&, _ArgTypes...>::value> 1118 struct __callable; 1119 template <class _Fp> 1120 struct __callable<_Fp, true> 1121 { 1122 static const bool value = 1123 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, 1124 _Rp>::value; 1125 }; 1126 template <class _Fp> 1127 struct __callable<_Fp, false> 1128 { 1129 static const bool value = false; 1130 }; 1131public: 1132 typedef _Rp result_type; 1133 1134 // construct/copy/destroy: 1135 _LIBCPP_INLINE_VISIBILITY 1136 function() _NOEXCEPT : __f_(0) {} 1137 _LIBCPP_INLINE_VISIBILITY 1138 function(nullptr_t) _NOEXCEPT : __f_(0) {} 1139 function(const function&); 1140 function(function&&) _NOEXCEPT; 1141 template<class _Fp> 1142 function(_Fp, 1143 typename enable_if<__callable<_Fp>::value>::type* = 0); 1144 1145 template<class _Alloc> 1146 _LIBCPP_INLINE_VISIBILITY 1147 function(allocator_arg_t, const _Alloc&) _NOEXCEPT : __f_(0) {} 1148 template<class _Alloc> 1149 _LIBCPP_INLINE_VISIBILITY 1150 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT : __f_(0) {} 1151 template<class _Alloc> 1152 function(allocator_arg_t, const _Alloc&, const function&); 1153 template<class _Alloc> 1154 function(allocator_arg_t, const _Alloc&, function&&); 1155 template<class _Fp, class _Alloc> 1156 function(allocator_arg_t, const _Alloc& __a, _Fp __f, 1157 typename enable_if<__callable<_Fp>::value>::type* = 0); 1158 1159 function& operator=(const function&); 1160 function& operator=(function&&) _NOEXCEPT; 1161 function& operator=(nullptr_t) _NOEXCEPT; 1162 template<class _Fp> 1163 typename enable_if 1164 < 1165 __callable<typename decay<_Fp>::type>::value, 1166 function& 1167 >::type 1168 operator=(_Fp&&); 1169 1170 ~function(); 1171 1172 // function modifiers: 1173 void swap(function&) _NOEXCEPT; 1174 template<class _Fp, class _Alloc> 1175 _LIBCPP_INLINE_VISIBILITY 1176 void assign(_Fp&& __f, const _Alloc& __a) 1177 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 1178 1179 // function capacity: 1180 _LIBCPP_INLINE_VISIBILITY 1181 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;} 1182 1183 // deleted overloads close possible hole in the type system 1184 template<class _R2, class... _ArgTypes2> 1185 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 1186 template<class _R2, class... _ArgTypes2> 1187 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 1188public: 1189 // function invocation: 1190 _Rp operator()(_ArgTypes...) const; 1191 1192#ifndef _LIBCPP_NO_RTTI 1193 // function target access: 1194 const std::type_info& target_type() const _NOEXCEPT; 1195 template <typename _Tp> _Tp* target() _NOEXCEPT; 1196 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 1197#endif // _LIBCPP_NO_RTTI 1198}; 1199 1200template<class _Rp, class ..._ArgTypes> 1201function<_Rp(_ArgTypes...)>::function(const function& __f) 1202{ 1203 if (__f.__f_ == 0) 1204 __f_ = 0; 1205 else if (__f.__f_ == (const __base*)&__f.__buf_) 1206 { 1207 __f_ = (__base*)&__buf_; 1208 __f.__f_->__clone(__f_); 1209 } 1210 else 1211 __f_ = __f.__f_->__clone(); 1212} 1213 1214template<class _Rp, class ..._ArgTypes> 1215template <class _Alloc> 1216function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1217 const function& __f) 1218{ 1219 if (__f.__f_ == 0) 1220 __f_ = 0; 1221 else if (__f.__f_ == (const __base*)&__f.__buf_) 1222 { 1223 __f_ = (__base*)&__buf_; 1224 __f.__f_->__clone(__f_); 1225 } 1226 else 1227 __f_ = __f.__f_->__clone(); 1228} 1229 1230template<class _Rp, class ..._ArgTypes> 1231function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 1232{ 1233 if (__f.__f_ == 0) 1234 __f_ = 0; 1235 else if (__f.__f_ == (__base*)&__f.__buf_) 1236 { 1237 __f_ = (__base*)&__buf_; 1238 __f.__f_->__clone(__f_); 1239 } 1240 else 1241 { 1242 __f_ = __f.__f_; 1243 __f.__f_ = 0; 1244 } 1245} 1246 1247template<class _Rp, class ..._ArgTypes> 1248template <class _Alloc> 1249function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1250 function&& __f) 1251{ 1252 if (__f.__f_ == 0) 1253 __f_ = 0; 1254 else if (__f.__f_ == (__base*)&__f.__buf_) 1255 { 1256 __f_ = (__base*)&__buf_; 1257 __f.__f_->__clone(__f_); 1258 } 1259 else 1260 { 1261 __f_ = __f.__f_; 1262 __f.__f_ = 0; 1263 } 1264} 1265 1266template<class _Rp, class ..._ArgTypes> 1267template <class _Fp> 1268function<_Rp(_ArgTypes...)>::function(_Fp __f, 1269 typename enable_if<__callable<_Fp>::value>::type*) 1270 : __f_(0) 1271{ 1272 if (__not_null(__f)) 1273 { 1274 typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF; 1275 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) 1276 { 1277 __f_ = (__base*)&__buf_; 1278 ::new (__f_) _FF(_VSTD::move(__f)); 1279 } 1280 else 1281 { 1282 typedef allocator<_FF> _Ap; 1283 _Ap __a; 1284 typedef __allocator_destructor<_Ap> _Dp; 1285 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1286 ::new (__hold.get()) _FF(_VSTD::move(__f), allocator<_Fp>(__a)); 1287 __f_ = __hold.release(); 1288 } 1289 } 1290} 1291 1292template<class _Rp, class ..._ArgTypes> 1293template <class _Fp, class _Alloc> 1294function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, 1295 typename enable_if<__callable<_Fp>::value>::type*) 1296 : __f_(0) 1297{ 1298 typedef allocator_traits<_Alloc> __alloc_traits; 1299 if (__not_null(__f)) 1300 { 1301 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF; 1302 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) 1303 { 1304 __f_ = (__base*)&__buf_; 1305 ::new (__f_) _FF(_VSTD::move(__f)); 1306 } 1307 else 1308 { 1309 typedef typename __alloc_traits::template 1310#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1311 rebind_alloc<_FF> 1312#else 1313 rebind_alloc<_FF>::other 1314#endif 1315 _Ap; 1316 _Ap __a(__a0); 1317 typedef __allocator_destructor<_Ap> _Dp; 1318 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1319 ::new (__hold.get()) _FF(_VSTD::move(__f), _Alloc(__a)); 1320 __f_ = __hold.release(); 1321 } 1322 } 1323} 1324 1325template<class _Rp, class ..._ArgTypes> 1326function<_Rp(_ArgTypes...)>& 1327function<_Rp(_ArgTypes...)>::operator=(const function& __f) 1328{ 1329 function(__f).swap(*this); 1330 return *this; 1331} 1332 1333template<class _Rp, class ..._ArgTypes> 1334function<_Rp(_ArgTypes...)>& 1335function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 1336{ 1337 if (__f_ == (__base*)&__buf_) 1338 __f_->destroy(); 1339 else if (__f_) 1340 __f_->destroy_deallocate(); 1341 __f_ = 0; 1342 if (__f.__f_ == 0) 1343 __f_ = 0; 1344 else if (__f.__f_ == (__base*)&__f.__buf_) 1345 { 1346 __f_ = (__base*)&__buf_; 1347 __f.__f_->__clone(__f_); 1348 } 1349 else 1350 { 1351 __f_ = __f.__f_; 1352 __f.__f_ = 0; 1353 } 1354} 1355 1356template<class _Rp, class ..._ArgTypes> 1357function<_Rp(_ArgTypes...)>& 1358function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 1359{ 1360 if (__f_ == (__base*)&__buf_) 1361 __f_->destroy(); 1362 else if (__f_) 1363 __f_->destroy_deallocate(); 1364 __f_ = 0; 1365} 1366 1367template<class _Rp, class ..._ArgTypes> 1368template <class _Fp> 1369typename enable_if 1370< 1371 function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value, 1372 function<_Rp(_ArgTypes...)>& 1373>::type 1374function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 1375{ 1376 function(_VSTD::forward<_Fp>(__f)).swap(*this); 1377 return *this; 1378} 1379 1380template<class _Rp, class ..._ArgTypes> 1381function<_Rp(_ArgTypes...)>::~function() 1382{ 1383 if (__f_ == (__base*)&__buf_) 1384 __f_->destroy(); 1385 else if (__f_) 1386 __f_->destroy_deallocate(); 1387} 1388 1389template<class _Rp, class ..._ArgTypes> 1390void 1391function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 1392{ 1393 if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) 1394 { 1395 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1396 __base* __t = (__base*)&__tempbuf; 1397 __f_->__clone(__t); 1398 __f_->destroy(); 1399 __f_ = 0; 1400 __f.__f_->__clone((__base*)&__buf_); 1401 __f.__f_->destroy(); 1402 __f.__f_ = 0; 1403 __f_ = (__base*)&__buf_; 1404 __t->__clone((__base*)&__f.__buf_); 1405 __t->destroy(); 1406 __f.__f_ = (__base*)&__f.__buf_; 1407 } 1408 else if (__f_ == (__base*)&__buf_) 1409 { 1410 __f_->__clone((__base*)&__f.__buf_); 1411 __f_->destroy(); 1412 __f_ = __f.__f_; 1413 __f.__f_ = (__base*)&__f.__buf_; 1414 } 1415 else if (__f.__f_ == (__base*)&__f.__buf_) 1416 { 1417 __f.__f_->__clone((__base*)&__buf_); 1418 __f.__f_->destroy(); 1419 __f.__f_ = __f_; 1420 __f_ = (__base*)&__buf_; 1421 } 1422 else 1423 _VSTD::swap(__f_, __f.__f_); 1424} 1425 1426template<class _Rp, class ..._ArgTypes> 1427_Rp 1428function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 1429{ 1430#ifndef _LIBCPP_NO_EXCEPTIONS 1431 if (__f_ == 0) 1432 throw bad_function_call(); 1433#endif // _LIBCPP_NO_EXCEPTIONS 1434 return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...); 1435} 1436 1437#ifndef _LIBCPP_NO_RTTI 1438 1439template<class _Rp, class ..._ArgTypes> 1440const std::type_info& 1441function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1442{ 1443 if (__f_ == 0) 1444 return typeid(void); 1445 return __f_->target_type(); 1446} 1447 1448template<class _Rp, class ..._ArgTypes> 1449template <typename _Tp> 1450_Tp* 1451function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 1452{ 1453 if (__f_ == 0) 1454 return (_Tp*)0; 1455 return (_Tp*)__f_->target(typeid(_Tp)); 1456} 1457 1458template<class _Rp, class ..._ArgTypes> 1459template <typename _Tp> 1460const _Tp* 1461function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 1462{ 1463 if (__f_ == 0) 1464 return (const _Tp*)0; 1465 return (const _Tp*)__f_->target(typeid(_Tp)); 1466} 1467 1468#endif // _LIBCPP_NO_RTTI 1469 1470template <class _Rp, class... _ArgTypes> 1471inline _LIBCPP_INLINE_VISIBILITY 1472bool 1473operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 1474 1475template <class _Rp, class... _ArgTypes> 1476inline _LIBCPP_INLINE_VISIBILITY 1477bool 1478operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 1479 1480template <class _Rp, class... _ArgTypes> 1481inline _LIBCPP_INLINE_VISIBILITY 1482bool 1483operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 1484 1485template <class _Rp, class... _ArgTypes> 1486inline _LIBCPP_INLINE_VISIBILITY 1487bool 1488operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 1489 1490template <class _Rp, class... _ArgTypes> 1491inline _LIBCPP_INLINE_VISIBILITY 1492void 1493swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 1494{return __x.swap(__y);} 1495 1496template<class _Tp> struct __is_bind_expression : public false_type {}; 1497template<class _Tp> struct _LIBCPP_VISIBLE is_bind_expression 1498 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 1499 1500template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 1501template<class _Tp> struct _LIBCPP_VISIBLE is_placeholder 1502 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 1503 1504namespace placeholders 1505{ 1506 1507template <int _Np> struct __ph {}; 1508 1509extern __ph<1> _1; 1510extern __ph<2> _2; 1511extern __ph<3> _3; 1512extern __ph<4> _4; 1513extern __ph<5> _5; 1514extern __ph<6> _6; 1515extern __ph<7> _7; 1516extern __ph<8> _8; 1517extern __ph<9> _9; 1518extern __ph<10> _10; 1519 1520} // placeholders 1521 1522template<int _Np> 1523struct __is_placeholder<placeholders::__ph<_Np> > 1524 : public integral_constant<int, _Np> {}; 1525 1526template <class _Tp, class _Uj> 1527inline _LIBCPP_INLINE_VISIBILITY 1528_Tp& 1529__mu(reference_wrapper<_Tp> __t, _Uj&) 1530{ 1531 return __t.get(); 1532} 1533 1534template <class _Ti, class ..._Uj, size_t ..._Indx> 1535inline _LIBCPP_INLINE_VISIBILITY 1536typename __invoke_of<_Ti&, _Uj...>::type 1537__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 1538{ 1539 return __ti(_VSTD::forward<_Uj>(get<_Indx>(__uj))...); 1540} 1541 1542template <class _Ti, class ..._Uj> 1543inline _LIBCPP_INLINE_VISIBILITY 1544typename enable_if 1545< 1546 is_bind_expression<_Ti>::value, 1547 typename __invoke_of<_Ti&, _Uj...>::type 1548>::type 1549__mu(_Ti& __ti, tuple<_Uj...>& __uj) 1550{ 1551 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 1552 return __mu_expand(__ti, __uj, __indices()); 1553} 1554 1555template <bool IsPh, class _Ti, class _Uj> 1556struct __mu_return2 {}; 1557 1558template <class _Ti, class _Uj> 1559struct __mu_return2<true, _Ti, _Uj> 1560{ 1561 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 1562}; 1563 1564template <class _Ti, class _Uj> 1565inline _LIBCPP_INLINE_VISIBILITY 1566typename enable_if 1567< 1568 0 < is_placeholder<_Ti>::value, 1569 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 1570>::type 1571__mu(_Ti&, _Uj& __uj) 1572{ 1573 const size_t _Indx = is_placeholder<_Ti>::value - 1; 1574 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(get<_Indx>(__uj)); 1575} 1576 1577template <class _Ti, class _Uj> 1578inline _LIBCPP_INLINE_VISIBILITY 1579typename enable_if 1580< 1581 !is_bind_expression<_Ti>::value && 1582 is_placeholder<_Ti>::value == 0 && 1583 !__is_reference_wrapper<_Ti>::value, 1584 _Ti& 1585>::type 1586__mu(_Ti& __ti, _Uj&) 1587{ 1588 return __ti; 1589} 1590 1591template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 1592 class _TupleUj> 1593struct ____mu_return; 1594 1595template <class _Ti, class ..._Uj> 1596struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> > 1597{ 1598 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 1599}; 1600 1601template <class _Ti, class _TupleUj> 1602struct ____mu_return<_Ti, false, false, true, _TupleUj> 1603{ 1604 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 1605 _TupleUj>::type&& type; 1606}; 1607 1608template <class _Ti, class _TupleUj> 1609struct ____mu_return<_Ti, true, false, false, _TupleUj> 1610{ 1611 typedef typename _Ti::type& type; 1612}; 1613 1614template <class _Ti, class _TupleUj> 1615struct ____mu_return<_Ti, false, false, false, _TupleUj> 1616{ 1617 typedef _Ti& type; 1618}; 1619 1620template <class _Ti, class _TupleUj> 1621struct __mu_return 1622 : public ____mu_return<_Ti, 1623 __is_reference_wrapper<_Ti>::value, 1624 is_bind_expression<_Ti>::value, 1625 0 < is_placeholder<_Ti>::value, 1626 _TupleUj> 1627{ 1628}; 1629 1630template <class _Fp, class _BoundArgs, class _TupleUj> 1631struct __bind_return; 1632 1633template <class _Fp, class ..._BoundArgs, class _TupleUj> 1634struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 1635{ 1636 typedef typename __invoke_of 1637 < 1638 _Fp&, 1639 typename __mu_return 1640 < 1641 _BoundArgs, 1642 _TupleUj 1643 >::type... 1644 >::type type; 1645}; 1646 1647template <class _Fp, class ..._BoundArgs, class _TupleUj> 1648struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 1649{ 1650 typedef typename __invoke_of 1651 < 1652 _Fp&, 1653 typename __mu_return 1654 < 1655 const _BoundArgs, 1656 _TupleUj 1657 >::type... 1658 >::type type; 1659}; 1660 1661template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 1662inline _LIBCPP_INLINE_VISIBILITY 1663typename __bind_return<_Fp, _BoundArgs, _Args>::type 1664__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 1665 _Args&& __args) 1666{ 1667 return __invoke(__f, __mu(get<_Indx>(__bound_args), __args)...); 1668} 1669 1670template<class _Fp, class ..._BoundArgs> 1671class __bind 1672 : public __weak_result_type<typename decay<_Fp>::type> 1673{ 1674 typedef typename decay<_Fp>::type _Fd; 1675 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 1676 _Fd __f_; 1677 _Td __bound_args_; 1678 1679 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 1680public: 1681#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1682 1683 _LIBCPP_INLINE_VISIBILITY 1684 __bind(const __bind& __b) 1685 : __f_(__b.__f_), 1686 __bound_args_(__b.__bound_args_) {} 1687 1688 _LIBCPP_INLINE_VISIBILITY 1689 __bind& operator=(const __bind& __b) 1690 { 1691 __f_ = __b.__f_; 1692 __bound_args_ = __b.__bound_args_; 1693 return *this; 1694 } 1695 1696 _LIBCPP_INLINE_VISIBILITY 1697 __bind(__bind&& __b) 1698 : __f_(_VSTD::move(__b.__f_)), 1699 __bound_args_(_VSTD::move(__b.__bound_args_)) {} 1700 1701 _LIBCPP_INLINE_VISIBILITY 1702 __bind& operator=(__bind&& __b) 1703 { 1704 __f_ = _VSTD::move(__b.__f_); 1705 __bound_args_ = _VSTD::move(__b.__bound_args_); 1706 return *this; 1707 } 1708 1709#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1710 1711 template <class _Gp, class ..._BA, 1712 class = typename enable_if 1713 < 1714 is_constructible<_Fd, _Gp>::value 1715 >::type> 1716 _LIBCPP_INLINE_VISIBILITY 1717 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 1718 : __f_(_VSTD::forward<_Gp>(__f)), 1719 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 1720 1721 template <class ..._Args> 1722 _LIBCPP_INLINE_VISIBILITY 1723 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 1724 operator()(_Args&& ...__args) 1725 { 1726 return __apply_functor(__f_, __bound_args_, __indices(), 1727 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 1728 } 1729 1730 template <class ..._Args> 1731 _LIBCPP_INLINE_VISIBILITY 1732 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 1733 operator()(_Args&& ...__args) const 1734 { 1735 return __apply_functor(__f_, __bound_args_, __indices(), 1736 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 1737 } 1738}; 1739 1740template<class _Fp, class ..._BoundArgs> 1741struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 1742 1743template<class _Rp, class _Fp, class ..._BoundArgs> 1744class __bind_r 1745 : public __bind<_Fp, _BoundArgs...> 1746{ 1747 typedef __bind<_Fp, _BoundArgs...> base; 1748public: 1749 typedef _Rp result_type; 1750 1751#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1752 1753 _LIBCPP_INLINE_VISIBILITY 1754 __bind_r(const __bind_r& __b) 1755 : base(_VSTD::forward<const base&>(__b)) {} 1756 1757 _LIBCPP_INLINE_VISIBILITY 1758 __bind_r& operator=(const __bind_r& __b) 1759 { 1760 base::operator=(_VSTD::forward<const base&>(__b)); 1761 return *this; 1762 } 1763 1764 _LIBCPP_INLINE_VISIBILITY 1765 __bind_r(__bind_r&& __b) 1766 : base(_VSTD::forward<base>(__b)) {} 1767 1768 _LIBCPP_INLINE_VISIBILITY 1769 __bind_r& operator=(__bind_r&& __b) 1770 { 1771 base::operator=(_VSTD::forward<base>(__b)); 1772 return *this; 1773 } 1774 1775#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1776 1777 template <class _Gp, class ..._BA> 1778 _LIBCPP_INLINE_VISIBILITY 1779 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 1780 : base(_VSTD::forward<_Gp>(__f), 1781 _VSTD::forward<_BA>(__bound_args)...) {} 1782 1783 template <class ..._Args> 1784 _LIBCPP_INLINE_VISIBILITY 1785 result_type 1786 operator()(_Args&& ...__args) 1787 { 1788 return base::operator()(_VSTD::forward<_Args>(__args)...); 1789 } 1790 1791 template <class ..._Args> 1792 _LIBCPP_INLINE_VISIBILITY 1793 result_type 1794 operator()(_Args&& ...__args) const 1795 { 1796 return base::operator()(_VSTD::forward<_Args>(__args)...); 1797 } 1798}; 1799 1800template<class _Rp, class _Fp, class ..._BoundArgs> 1801struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 1802 1803template<class _Fp, class ..._BoundArgs> 1804inline _LIBCPP_INLINE_VISIBILITY 1805__bind<_Fp, _BoundArgs...> 1806bind(_Fp&& __f, _BoundArgs&&... __bound_args) 1807{ 1808 typedef __bind<_Fp, _BoundArgs...> type; 1809 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 1810} 1811 1812template<class _Rp, class _Fp, class ..._BoundArgs> 1813inline _LIBCPP_INLINE_VISIBILITY 1814__bind_r<_Rp, _Fp, _BoundArgs...> 1815bind(_Fp&& __f, _BoundArgs&&... __bound_args) 1816{ 1817 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 1818 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 1819} 1820 1821#endif // _LIBCPP_HAS_NO_VARIADICS 1822 1823template <> 1824struct _LIBCPP_VISIBLE hash<bool> 1825 : public unary_function<bool, size_t> 1826{ 1827 _LIBCPP_INLINE_VISIBILITY 1828 size_t operator()(bool __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1829}; 1830 1831template <> 1832struct _LIBCPP_VISIBLE hash<char> 1833 : public unary_function<char, size_t> 1834{ 1835 _LIBCPP_INLINE_VISIBILITY 1836 size_t operator()(char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1837}; 1838 1839template <> 1840struct _LIBCPP_VISIBLE hash<signed char> 1841 : public unary_function<signed char, size_t> 1842{ 1843 _LIBCPP_INLINE_VISIBILITY 1844 size_t operator()(signed char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1845}; 1846 1847template <> 1848struct _LIBCPP_VISIBLE hash<unsigned char> 1849 : public unary_function<unsigned char, size_t> 1850{ 1851 _LIBCPP_INLINE_VISIBILITY 1852 size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1853}; 1854 1855#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 1856 1857template <> 1858struct _LIBCPP_VISIBLE hash<char16_t> 1859 : public unary_function<char16_t, size_t> 1860{ 1861 _LIBCPP_INLINE_VISIBILITY 1862 size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1863}; 1864 1865template <> 1866struct _LIBCPP_VISIBLE hash<char32_t> 1867 : public unary_function<char32_t, size_t> 1868{ 1869 _LIBCPP_INLINE_VISIBILITY 1870 size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1871}; 1872 1873#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 1874 1875template <> 1876struct _LIBCPP_VISIBLE hash<wchar_t> 1877 : public unary_function<wchar_t, size_t> 1878{ 1879 _LIBCPP_INLINE_VISIBILITY 1880 size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1881}; 1882 1883template <> 1884struct _LIBCPP_VISIBLE hash<short> 1885 : public unary_function<short, size_t> 1886{ 1887 _LIBCPP_INLINE_VISIBILITY 1888 size_t operator()(short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1889}; 1890 1891template <> 1892struct _LIBCPP_VISIBLE hash<unsigned short> 1893 : public unary_function<unsigned short, size_t> 1894{ 1895 _LIBCPP_INLINE_VISIBILITY 1896 size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1897}; 1898 1899template <> 1900struct _LIBCPP_VISIBLE hash<int> 1901 : public unary_function<int, size_t> 1902{ 1903 _LIBCPP_INLINE_VISIBILITY 1904 size_t operator()(int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1905}; 1906 1907template <> 1908struct _LIBCPP_VISIBLE hash<unsigned int> 1909 : public unary_function<unsigned int, size_t> 1910{ 1911 _LIBCPP_INLINE_VISIBILITY 1912 size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1913}; 1914 1915template <> 1916struct _LIBCPP_VISIBLE hash<long> 1917 : public unary_function<long, size_t> 1918{ 1919 _LIBCPP_INLINE_VISIBILITY 1920 size_t operator()(long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1921}; 1922 1923template <> 1924struct _LIBCPP_VISIBLE hash<unsigned long> 1925 : public unary_function<unsigned long, size_t> 1926{ 1927 _LIBCPP_INLINE_VISIBILITY 1928 size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 1929}; 1930 1931template <> 1932struct _LIBCPP_VISIBLE hash<long long> 1933 : public __scalar_hash<long long> 1934{ 1935}; 1936 1937template <> 1938struct _LIBCPP_VISIBLE hash<unsigned long long> 1939 : public __scalar_hash<unsigned long long> 1940{ 1941}; 1942 1943template <> 1944struct _LIBCPP_VISIBLE hash<float> 1945 : public __scalar_hash<float> 1946{ 1947 _LIBCPP_INLINE_VISIBILITY 1948 size_t operator()(float __v) const _NOEXCEPT 1949 { 1950 // -0.0 and 0.0 should return same hash 1951 if (__v == 0) 1952 return 0; 1953 return __scalar_hash<float>::operator()(__v); 1954 } 1955}; 1956 1957template <> 1958struct _LIBCPP_VISIBLE hash<double> 1959 : public __scalar_hash<double> 1960{ 1961 _LIBCPP_INLINE_VISIBILITY 1962 size_t operator()(double __v) const _NOEXCEPT 1963 { 1964 // -0.0 and 0.0 should return same hash 1965 if (__v == 0) 1966 return 0; 1967 return __scalar_hash<double>::operator()(__v); 1968 } 1969}; 1970 1971template <> 1972struct _LIBCPP_VISIBLE hash<long double> 1973 : public __scalar_hash<long double> 1974{ 1975 _LIBCPP_INLINE_VISIBILITY 1976 size_t operator()(long double __v) const _NOEXCEPT 1977 { 1978 // -0.0 and 0.0 should return same hash 1979 if (__v == 0) 1980 return 0; 1981#if defined(__i386__) 1982 // Zero out padding bits 1983 union 1984 { 1985 long double __t; 1986 struct 1987 { 1988 size_t __a; 1989 size_t __b; 1990 size_t __c; 1991 size_t __d; 1992 }; 1993 } __u; 1994 __u.__a = 0; 1995 __u.__b = 0; 1996 __u.__c = 0; 1997 __u.__d = 0; 1998 __u.__t = __v; 1999 return __u.__a ^ __u.__b ^ __u.__c ^ __u.__d; 2000#elif defined(__x86_64__) 2001 // Zero out padding bits 2002 union 2003 { 2004 long double __t; 2005 struct 2006 { 2007 size_t __a; 2008 size_t __b; 2009 }; 2010 } __u; 2011 __u.__a = 0; 2012 __u.__b = 0; 2013 __u.__t = __v; 2014 return __u.__a ^ __u.__b; 2015#else 2016 return __scalar_hash<long double>::operator()(__v); 2017#endif 2018 } 2019}; 2020 2021// struct hash<T*> in <memory> 2022 2023_LIBCPP_END_NAMESPACE_STD 2024 2025#endif // _LIBCPP_FUNCTIONAL 2026