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 17 namespace std 18 { 19 20 template <class Arg, class Result> 21 struct unary_function 22 { 23 typedef Arg argument_type; 24 typedef Result result_type; 25 }; 26 27 template <class Arg1, class Arg2, class Result> 28 struct binary_function 29 { 30 typedef Arg1 first_argument_type; 31 typedef Arg2 second_argument_type; 32 typedef Result result_type; 33 }; 34 35 template <class T> 36 class 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 { 40 public: 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 63 template <class T> reference_wrapper<T> ref(T& t) noexcept; 64 template <class T> void ref(const T&& t) = delete; 65 template <class T> reference_wrapper<T> ref(reference_wrapper<T>t) noexcept; 66 67 template <class T> reference_wrapper<const T> cref(const T& t) noexcept; 68 template <class T> void cref(const T&& t) = delete; 69 template <class T> reference_wrapper<const T> cref(reference_wrapper<T> t) noexcept; 70 71 template <class T> // <class T=void> in C++14 72 struct plus : binary_function<T, T, T> 73 { 74 T operator()(const T& x, const T& y) const; 75 }; 76 77 template <class T> // <class T=void> in C++14 78 struct minus : binary_function<T, T, T> 79 { 80 T operator()(const T& x, const T& y) const; 81 }; 82 83 template <class T> // <class T=void> in C++14 84 struct multiplies : binary_function<T, T, T> 85 { 86 T operator()(const T& x, const T& y) const; 87 }; 88 89 template <class T> // <class T=void> in C++14 90 struct divides : binary_function<T, T, T> 91 { 92 T operator()(const T& x, const T& y) const; 93 }; 94 95 template <class T> // <class T=void> in C++14 96 struct modulus : binary_function<T, T, T> 97 { 98 T operator()(const T& x, const T& y) const; 99 }; 100 101 template <class T> // <class T=void> in C++14 102 struct negate : unary_function<T, T> 103 { 104 T operator()(const T& x) const; 105 }; 106 107 template <class T> // <class T=void> in C++14 108 struct equal_to : binary_function<T, T, bool> 109 { 110 bool operator()(const T& x, const T& y) const; 111 }; 112 113 template <class T> // <class T=void> in C++14 114 struct not_equal_to : binary_function<T, T, bool> 115 { 116 bool operator()(const T& x, const T& y) const; 117 }; 118 119 template <class T> // <class T=void> in C++14 120 struct greater : binary_function<T, T, bool> 121 { 122 bool operator()(const T& x, const T& y) const; 123 }; 124 125 template <class T> // <class T=void> in C++14 126 struct less : binary_function<T, T, bool> 127 { 128 bool operator()(const T& x, const T& y) const; 129 }; 130 131 template <class T> // <class T=void> in C++14 132 struct greater_equal : binary_function<T, T, bool> 133 { 134 bool operator()(const T& x, const T& y) const; 135 }; 136 137 template <class T> // <class T=void> in C++14 138 struct less_equal : binary_function<T, T, bool> 139 { 140 bool operator()(const T& x, const T& y) const; 141 }; 142 143 template <class T> // <class T=void> in C++14 144 struct logical_and : binary_function<T, T, bool> 145 { 146 bool operator()(const T& x, const T& y) const; 147 }; 148 149 template <class T> // <class T=void> in C++14 150 struct logical_or : binary_function<T, T, bool> 151 { 152 bool operator()(const T& x, const T& y) const; 153 }; 154 155 template <class T> // <class T=void> in C++14 156 struct logical_not : unary_function<T, bool> 157 { 158 bool operator()(const T& x) const; 159 }; 160 161 template <class T> // <class T=void> in C++14 162 struct bit_and : unary_function<T, bool> 163 { 164 bool operator()(const T& x, const T& y) const; 165 }; 166 167 template <class T> // <class T=void> in C++14 168 struct bit_or : unary_function<T, bool> 169 { 170 bool operator()(const T& x, const T& y) const; 171 }; 172 173 template <class T> // <class T=void> in C++14 174 struct bit_xor : unary_function<T, bool> 175 { 176 bool operator()(const T& x, const T& y) const; 177 }; 178 179 template <class T=void> // C++14 180 struct bit_xor : unary_function<T, bool> 181 { 182 bool operator()(const T& x) const; 183 }; 184 185 template <class Predicate> 186 class unary_negate 187 : public unary_function<typename Predicate::argument_type, bool> 188 { 189 public: 190 explicit unary_negate(const Predicate& pred); 191 bool operator()(const typename Predicate::argument_type& x) const; 192 }; 193 194 template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred); 195 196 template <class Predicate> 197 class binary_negate 198 : public binary_function<typename Predicate::first_argument_type, 199 typename Predicate::second_argument_type, 200 bool> 201 { 202 public: 203 explicit binary_negate(const Predicate& pred); 204 bool operator()(const typename Predicate::first_argument_type& x, 205 const typename Predicate::second_argument_type& y) const; 206 }; 207 208 template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred); 209 210 template<class T> struct is_bind_expression; 211 template<class T> struct is_placeholder; 212 213 template<class Fn, class... BoundArgs> 214 unspecified bind(Fn&&, BoundArgs&&...); 215 template<class R, class Fn, class... BoundArgs> 216 unspecified bind(Fn&&, BoundArgs&&...); 217 218 namespace placeholders { 219 // M is the implementation-defined number of placeholders 220 extern unspecified _1; 221 extern unspecified _2; 222 . 223 . 224 . 225 extern unspecified _Mp; 226 } 227 228 template <class Operation> 229 class binder1st 230 : public unary_function<typename Operation::second_argument_type, 231 typename Operation::result_type> 232 { 233 protected: 234 Operation op; 235 typename Operation::first_argument_type value; 236 public: 237 binder1st(const Operation& x, const typename Operation::first_argument_type y); 238 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 239 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 240 }; 241 242 template <class Operation, class T> 243 binder1st<Operation> bind1st(const Operation& op, const T& x); 244 245 template <class Operation> 246 class binder2nd 247 : public unary_function<typename Operation::first_argument_type, 248 typename Operation::result_type> 249 { 250 protected: 251 Operation op; 252 typename Operation::second_argument_type value; 253 public: 254 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 255 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 256 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 257 }; 258 259 template <class Operation, class T> 260 binder2nd<Operation> bind2nd(const Operation& op, const T& x); 261 262 template <class Arg, class Result> 263 class pointer_to_unary_function : public unary_function<Arg, Result> 264 { 265 public: 266 explicit pointer_to_unary_function(Result (*f)(Arg)); 267 Result operator()(Arg x) const; 268 }; 269 270 template <class Arg, class Result> 271 pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); 272 273 template <class Arg1, class Arg2, class Result> 274 class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 275 { 276 public: 277 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 278 Result operator()(Arg1 x, Arg2 y) const; 279 }; 280 281 template <class Arg1, class Arg2, class Result> 282 pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); 283 284 template<class S, class T> 285 class mem_fun_t : public unary_function<T*, S> 286 { 287 public: 288 explicit mem_fun_t(S (T::*p)()); 289 S operator()(T* p) const; 290 }; 291 292 template<class S, class T, class A> 293 class mem_fun1_t : public binary_function<T*, A, S> 294 { 295 public: 296 explicit mem_fun1_t(S (T::*p)(A)); 297 S operator()(T* p, A x) const; 298 }; 299 300 template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); 301 template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); 302 303 template<class S, class T> 304 class mem_fun_ref_t : public unary_function<T, S> 305 { 306 public: 307 explicit mem_fun_ref_t(S (T::*p)()); 308 S operator()(T& p) const; 309 }; 310 311 template<class S, class T, class A> 312 class mem_fun1_ref_t : public binary_function<T, A, S> 313 { 314 public: 315 explicit mem_fun1_ref_t(S (T::*p)(A)); 316 S operator()(T& p, A x) const; 317 }; 318 319 template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); 320 template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); 321 322 template <class S, class T> 323 class const_mem_fun_t : public unary_function<const T*, S> 324 { 325 public: 326 explicit const_mem_fun_t(S (T::*p)() const); 327 S operator()(const T* p) const; 328 }; 329 330 template <class S, class T, class A> 331 class const_mem_fun1_t : public binary_function<const T*, A, S> 332 { 333 public: 334 explicit const_mem_fun1_t(S (T::*p)(A) const); 335 S operator()(const T* p, A x) const; 336 }; 337 338 template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); 339 template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); 340 341 template <class S, class T> 342 class const_mem_fun_ref_t : public unary_function<T, S> 343 { 344 public: 345 explicit const_mem_fun_ref_t(S (T::*p)() const); 346 S operator()(const T& p) const; 347 }; 348 349 template <class S, class T, class A> 350 class const_mem_fun1_ref_t : public binary_function<T, A, S> 351 { 352 public: 353 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 354 S operator()(const T& p, A x) const; 355 }; 356 357 template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); 358 template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); 359 360 template<class R, class T> unspecified mem_fn(R T::*); 361 362 class bad_function_call 363 : public exception 364 { 365 }; 366 367 template<class> class function; // undefined 368 369 template<class R, class... ArgTypes> 370 class function<R(ArgTypes...)> 371 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 372 // ArgTypes contains T1 373 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 374 // ArgTypes contains T1 and T2 375 { 376 public: 377 typedef R result_type; 378 379 // construct/copy/destroy: 380 function() noexcept; 381 function(nullptr_t) noexcept; 382 function(const function&); 383 function(function&&) noexcept; 384 template<class F> 385 function(F); 386 template<Allocator Alloc> 387 function(allocator_arg_t, const Alloc&) noexcept; 388 template<Allocator Alloc> 389 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; 390 template<Allocator Alloc> 391 function(allocator_arg_t, const Alloc&, const function&); 392 template<Allocator Alloc> 393 function(allocator_arg_t, const Alloc&, function&&); 394 template<class F, Allocator Alloc> 395 function(allocator_arg_t, const Alloc&, F); 396 397 function& operator=(const function&); 398 function& operator=(function&&) noexcept; 399 function& operator=(nullptr_t) noexcept; 400 template<class F> 401 function& operator=(F&&); 402 template<class F> 403 function& operator=(reference_wrapper<F>) noexcept; 404 405 ~function(); 406 407 // function modifiers: 408 void swap(function&) noexcept; 409 template<class F, class Alloc> 410 void assign(F&&, const Alloc&); 411 412 // function capacity: 413 explicit operator bool() const noexcept; 414 415 // function invocation: 416 R operator()(ArgTypes...) const; 417 418 // function target access: 419 const std::type_info& target_type() const noexcept; 420 template <typename T> T* target() noexcept; 421 template <typename T> const T* target() const noexcept; 422 }; 423 424 // Null pointer comparisons: 425 template <class R, class ... ArgTypes> 426 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 427 428 template <class R, class ... ArgTypes> 429 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 430 431 template <class R, class ... ArgTypes> 432 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 433 434 template <class R, class ... ArgTypes> 435 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 436 437 // specialized algorithms: 438 template <class R, class ... ArgTypes> 439 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 440 441 template <class T> struct hash; 442 443 template <> struct hash<bool>; 444 template <> struct hash<char>; 445 template <> struct hash<signed char>; 446 template <> struct hash<unsigned char>; 447 template <> struct hash<char16_t>; 448 template <> struct hash<char32_t>; 449 template <> struct hash<wchar_t>; 450 template <> struct hash<short>; 451 template <> struct hash<unsigned short>; 452 template <> struct hash<int>; 453 template <> struct hash<unsigned int>; 454 template <> struct hash<long>; 455 template <> struct hash<long long>; 456 template <> struct hash<unsigned long>; 457 template <> struct hash<unsigned long long>; 458 459 template <> struct hash<float>; 460 template <> struct hash<double>; 461 template <> struct hash<long double>; 462 463 template<class T> struct hash<T*>; 464 465 } // std 466 467 POLICY: For non-variadic implementations, the number of arguments is limited 468 to 3. It is hoped that the need for non-variadic implementations 469 will be minimal. 470 471 */ 472 473 #include <__config> 474 #include <type_traits> 475 #include <typeinfo> 476 #include <exception> 477 #include <memory> 478 #include <tuple> 479 480 #include <__functional_base> 481 482 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 483 #pragma GCC system_header 484 #endif 485 486 _LIBCPP_BEGIN_NAMESPACE_STD 487 488 #if _LIBCPP_STD_VER > 11 489 template <class _Tp = void> 490 #else 491 template <class _Tp> 492 #endif 493 struct _LIBCPP_TYPE_VIS_ONLY plus : binary_function<_Tp, _Tp, _Tp> 494 { 495 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 496 _Tp operator()(const _Tp& __x, const _Tp& __y) const 497 {return __x + __y;} 498 }; 499 500 #if _LIBCPP_STD_VER > 11 501 template <> 502 struct _LIBCPP_TYPE_VIS_ONLY plus<void> 503 { 504 template <class _T1, class _T2> 505 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 506 auto operator()(_T1&& __t, _T2&& __u) const 507 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 508 -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 509 { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 510 typedef void is_transparent; 511 }; 512 #endif 513 514 515 #if _LIBCPP_STD_VER > 11 516 template <class _Tp = void> 517 #else 518 template <class _Tp> 519 #endif 520 struct _LIBCPP_TYPE_VIS_ONLY minus : binary_function<_Tp, _Tp, _Tp> 521 { 522 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 523 _Tp operator()(const _Tp& __x, const _Tp& __y) const 524 {return __x - __y;} 525 }; 526 527 #if _LIBCPP_STD_VER > 11 528 template <> 529 struct _LIBCPP_TYPE_VIS_ONLY minus<void> 530 { 531 template <class _T1, class _T2> 532 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 533 auto operator()(_T1&& __t, _T2&& __u) const 534 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) 535 -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) 536 { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } 537 typedef void is_transparent; 538 }; 539 #endif 540 541 542 #if _LIBCPP_STD_VER > 11 543 template <class _Tp = void> 544 #else 545 template <class _Tp> 546 #endif 547 struct _LIBCPP_TYPE_VIS_ONLY multiplies : binary_function<_Tp, _Tp, _Tp> 548 { 549 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 550 _Tp operator()(const _Tp& __x, const _Tp& __y) const 551 {return __x * __y;} 552 }; 553 554 #if _LIBCPP_STD_VER > 11 555 template <> 556 struct _LIBCPP_TYPE_VIS_ONLY multiplies<void> 557 { 558 template <class _T1, class _T2> 559 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 560 auto operator()(_T1&& __t, _T2&& __u) const 561 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) 562 -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) 563 { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } 564 typedef void is_transparent; 565 }; 566 #endif 567 568 569 #if _LIBCPP_STD_VER > 11 570 template <class _Tp = void> 571 #else 572 template <class _Tp> 573 #endif 574 struct _LIBCPP_TYPE_VIS_ONLY divides : binary_function<_Tp, _Tp, _Tp> 575 { 576 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 577 _Tp operator()(const _Tp& __x, const _Tp& __y) const 578 {return __x / __y;} 579 }; 580 581 #if _LIBCPP_STD_VER > 11 582 template <> 583 struct _LIBCPP_TYPE_VIS_ONLY divides<void> 584 { 585 template <class _T1, class _T2> 586 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 587 auto operator()(_T1&& __t, _T2&& __u) const 588 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) 589 -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) 590 { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } 591 typedef void is_transparent; 592 }; 593 #endif 594 595 596 #if _LIBCPP_STD_VER > 11 597 template <class _Tp = void> 598 #else 599 template <class _Tp> 600 #endif 601 struct _LIBCPP_TYPE_VIS_ONLY modulus : binary_function<_Tp, _Tp, _Tp> 602 { 603 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 604 _Tp operator()(const _Tp& __x, const _Tp& __y) const 605 {return __x % __y;} 606 }; 607 608 #if _LIBCPP_STD_VER > 11 609 template <> 610 struct _LIBCPP_TYPE_VIS_ONLY modulus<void> 611 { 612 template <class _T1, class _T2> 613 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 614 auto operator()(_T1&& __t, _T2&& __u) const 615 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) 616 -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) 617 { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } 618 typedef void is_transparent; 619 }; 620 #endif 621 622 623 #if _LIBCPP_STD_VER > 11 624 template <class _Tp = void> 625 #else 626 template <class _Tp> 627 #endif 628 struct _LIBCPP_TYPE_VIS_ONLY negate : unary_function<_Tp, _Tp> 629 { 630 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 631 _Tp operator()(const _Tp& __x) const 632 {return -__x;} 633 }; 634 635 #if _LIBCPP_STD_VER > 11 636 template <> 637 struct _LIBCPP_TYPE_VIS_ONLY negate<void> 638 { 639 template <class _Tp> 640 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 641 auto operator()(_Tp&& __x) const 642 _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) 643 -> decltype (- _VSTD::forward<_Tp>(__x)) 644 { return - _VSTD::forward<_Tp>(__x); } 645 typedef void is_transparent; 646 }; 647 #endif 648 649 650 #if _LIBCPP_STD_VER > 11 651 template <class _Tp = void> 652 #else 653 template <class _Tp> 654 #endif 655 struct _LIBCPP_TYPE_VIS_ONLY equal_to : binary_function<_Tp, _Tp, bool> 656 { 657 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 658 bool operator()(const _Tp& __x, const _Tp& __y) const 659 {return __x == __y;} 660 }; 661 662 #if _LIBCPP_STD_VER > 11 663 template <> 664 struct _LIBCPP_TYPE_VIS_ONLY equal_to<void> 665 { 666 template <class _T1, class _T2> 667 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 668 auto operator()(_T1&& __t, _T2&& __u) const 669 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) 670 -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) 671 { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } 672 typedef void is_transparent; 673 }; 674 #endif 675 676 677 #if _LIBCPP_STD_VER > 11 678 template <class _Tp = void> 679 #else 680 template <class _Tp> 681 #endif 682 struct _LIBCPP_TYPE_VIS_ONLY not_equal_to : binary_function<_Tp, _Tp, bool> 683 { 684 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 685 bool operator()(const _Tp& __x, const _Tp& __y) const 686 {return __x != __y;} 687 }; 688 689 #if _LIBCPP_STD_VER > 11 690 template <> 691 struct _LIBCPP_TYPE_VIS_ONLY not_equal_to<void> 692 { 693 template <class _T1, class _T2> 694 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 695 auto operator()(_T1&& __t, _T2&& __u) const 696 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) 697 -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) 698 { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } 699 typedef void is_transparent; 700 }; 701 #endif 702 703 704 #if _LIBCPP_STD_VER > 11 705 template <class _Tp = void> 706 #else 707 template <class _Tp> 708 #endif 709 struct _LIBCPP_TYPE_VIS_ONLY greater : binary_function<_Tp, _Tp, bool> 710 { 711 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 712 bool operator()(const _Tp& __x, const _Tp& __y) const 713 {return __x > __y;} 714 }; 715 716 #if _LIBCPP_STD_VER > 11 717 template <> 718 struct _LIBCPP_TYPE_VIS_ONLY greater<void> 719 { 720 template <class _T1, class _T2> 721 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 722 auto operator()(_T1&& __t, _T2&& __u) const 723 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) 724 -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) 725 { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } 726 typedef void is_transparent; 727 }; 728 #endif 729 730 731 // less in <__functional_base> 732 733 #if _LIBCPP_STD_VER > 11 734 template <class _Tp = void> 735 #else 736 template <class _Tp> 737 #endif 738 struct _LIBCPP_TYPE_VIS_ONLY greater_equal : binary_function<_Tp, _Tp, bool> 739 { 740 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 741 bool operator()(const _Tp& __x, const _Tp& __y) const 742 {return __x >= __y;} 743 }; 744 745 #if _LIBCPP_STD_VER > 11 746 template <> 747 struct _LIBCPP_TYPE_VIS_ONLY greater_equal<void> 748 { 749 template <class _T1, class _T2> 750 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 751 auto operator()(_T1&& __t, _T2&& __u) const 752 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) 753 -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) 754 { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } 755 typedef void is_transparent; 756 }; 757 #endif 758 759 760 #if _LIBCPP_STD_VER > 11 761 template <class _Tp = void> 762 #else 763 template <class _Tp> 764 #endif 765 struct _LIBCPP_TYPE_VIS_ONLY less_equal : binary_function<_Tp, _Tp, bool> 766 { 767 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 768 bool operator()(const _Tp& __x, const _Tp& __y) const 769 {return __x <= __y;} 770 }; 771 772 #if _LIBCPP_STD_VER > 11 773 template <> 774 struct _LIBCPP_TYPE_VIS_ONLY less_equal<void> 775 { 776 template <class _T1, class _T2> 777 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 778 auto operator()(_T1&& __t, _T2&& __u) const 779 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) 780 -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) 781 { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } 782 typedef void is_transparent; 783 }; 784 #endif 785 786 787 #if _LIBCPP_STD_VER > 11 788 template <class _Tp = void> 789 #else 790 template <class _Tp> 791 #endif 792 struct _LIBCPP_TYPE_VIS_ONLY logical_and : binary_function<_Tp, _Tp, bool> 793 { 794 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 795 bool operator()(const _Tp& __x, const _Tp& __y) const 796 {return __x && __y;} 797 }; 798 799 #if _LIBCPP_STD_VER > 11 800 template <> 801 struct _LIBCPP_TYPE_VIS_ONLY logical_and<void> 802 { 803 template <class _T1, class _T2> 804 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 805 auto operator()(_T1&& __t, _T2&& __u) const 806 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) 807 -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) 808 { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } 809 typedef void is_transparent; 810 }; 811 #endif 812 813 814 #if _LIBCPP_STD_VER > 11 815 template <class _Tp = void> 816 #else 817 template <class _Tp> 818 #endif 819 struct _LIBCPP_TYPE_VIS_ONLY logical_or : binary_function<_Tp, _Tp, bool> 820 { 821 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 822 bool operator()(const _Tp& __x, const _Tp& __y) const 823 {return __x || __y;} 824 }; 825 826 #if _LIBCPP_STD_VER > 11 827 template <> 828 struct _LIBCPP_TYPE_VIS_ONLY logical_or<void> 829 { 830 template <class _T1, class _T2> 831 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 832 auto operator()(_T1&& __t, _T2&& __u) const 833 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) 834 -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) 835 { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } 836 typedef void is_transparent; 837 }; 838 #endif 839 840 841 #if _LIBCPP_STD_VER > 11 842 template <class _Tp = void> 843 #else 844 template <class _Tp> 845 #endif 846 struct _LIBCPP_TYPE_VIS_ONLY logical_not : unary_function<_Tp, bool> 847 { 848 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 849 bool operator()(const _Tp& __x) const 850 {return !__x;} 851 }; 852 853 #if _LIBCPP_STD_VER > 11 854 template <> 855 struct _LIBCPP_TYPE_VIS_ONLY logical_not<void> 856 { 857 template <class _Tp> 858 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 859 auto operator()(_Tp&& __x) const 860 _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) 861 -> decltype (!_VSTD::forward<_Tp>(__x)) 862 { return !_VSTD::forward<_Tp>(__x); } 863 typedef void is_transparent; 864 }; 865 #endif 866 867 868 #if _LIBCPP_STD_VER > 11 869 template <class _Tp = void> 870 #else 871 template <class _Tp> 872 #endif 873 struct _LIBCPP_TYPE_VIS_ONLY bit_and : binary_function<_Tp, _Tp, _Tp> 874 { 875 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 876 _Tp operator()(const _Tp& __x, const _Tp& __y) const 877 {return __x & __y;} 878 }; 879 880 #if _LIBCPP_STD_VER > 11 881 template <> 882 struct _LIBCPP_TYPE_VIS_ONLY bit_and<void> 883 { 884 template <class _T1, class _T2> 885 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 886 auto operator()(_T1&& __t, _T2&& __u) const 887 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) 888 -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) 889 { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } 890 typedef void is_transparent; 891 }; 892 #endif 893 894 895 #if _LIBCPP_STD_VER > 11 896 template <class _Tp = void> 897 #else 898 template <class _Tp> 899 #endif 900 struct _LIBCPP_TYPE_VIS_ONLY bit_or : binary_function<_Tp, _Tp, _Tp> 901 { 902 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 903 _Tp operator()(const _Tp& __x, const _Tp& __y) const 904 {return __x | __y;} 905 }; 906 907 #if _LIBCPP_STD_VER > 11 908 template <> 909 struct _LIBCPP_TYPE_VIS_ONLY bit_or<void> 910 { 911 template <class _T1, class _T2> 912 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 913 auto operator()(_T1&& __t, _T2&& __u) const 914 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) 915 -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) 916 { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } 917 typedef void is_transparent; 918 }; 919 #endif 920 921 922 #if _LIBCPP_STD_VER > 11 923 template <class _Tp = void> 924 #else 925 template <class _Tp> 926 #endif 927 struct _LIBCPP_TYPE_VIS_ONLY bit_xor : binary_function<_Tp, _Tp, _Tp> 928 { 929 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 930 _Tp operator()(const _Tp& __x, const _Tp& __y) const 931 {return __x ^ __y;} 932 }; 933 934 #if _LIBCPP_STD_VER > 11 935 template <> 936 struct _LIBCPP_TYPE_VIS_ONLY bit_xor<void> 937 { 938 template <class _T1, class _T2> 939 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 940 auto operator()(_T1&& __t, _T2&& __u) const 941 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) 942 -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) 943 { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } 944 typedef void is_transparent; 945 }; 946 #endif 947 948 949 #if _LIBCPP_STD_VER > 11 950 template <class _Tp = void> 951 struct _LIBCPP_TYPE_VIS_ONLY bit_not : unary_function<_Tp, _Tp> 952 { 953 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 954 _Tp operator()(const _Tp& __x) const 955 {return ~__x;} 956 }; 957 958 template <> 959 struct _LIBCPP_TYPE_VIS_ONLY bit_not<void> 960 { 961 template <class _Tp> 962 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 963 auto operator()(_Tp&& __x) const 964 _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) 965 -> decltype (~_VSTD::forward<_Tp>(__x)) 966 { return ~_VSTD::forward<_Tp>(__x); } 967 typedef void is_transparent; 968 }; 969 #endif 970 971 template <class _Predicate> 972 class _LIBCPP_TYPE_VIS_ONLY unary_negate 973 : public unary_function<typename _Predicate::argument_type, bool> 974 { 975 _Predicate __pred_; 976 public: 977 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 978 explicit unary_negate(const _Predicate& __pred) 979 : __pred_(__pred) {} 980 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 981 bool operator()(const typename _Predicate::argument_type& __x) const 982 {return !__pred_(__x);} 983 }; 984 985 template <class _Predicate> 986 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 987 unary_negate<_Predicate> 988 not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 989 990 template <class _Predicate> 991 class _LIBCPP_TYPE_VIS_ONLY binary_negate 992 : public binary_function<typename _Predicate::first_argument_type, 993 typename _Predicate::second_argument_type, 994 bool> 995 { 996 _Predicate __pred_; 997 public: 998 _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 999 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} 1000 1001 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1002 bool operator()(const typename _Predicate::first_argument_type& __x, 1003 const typename _Predicate::second_argument_type& __y) const 1004 {return !__pred_(__x, __y);} 1005 }; 1006 1007 template <class _Predicate> 1008 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1009 binary_negate<_Predicate> 1010 not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 1011 1012 template <class __Operation> 1013 class _LIBCPP_TYPE_VIS_ONLY binder1st 1014 : public unary_function<typename __Operation::second_argument_type, 1015 typename __Operation::result_type> 1016 { 1017 protected: 1018 __Operation op; 1019 typename __Operation::first_argument_type value; 1020 public: 1021 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 1022 const typename __Operation::first_argument_type __y) 1023 : op(__x), value(__y) {} 1024 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1025 (typename __Operation::second_argument_type& __x) const 1026 {return op(value, __x);} 1027 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1028 (const typename __Operation::second_argument_type& __x) const 1029 {return op(value, __x);} 1030 }; 1031 1032 template <class __Operation, class _Tp> 1033 inline _LIBCPP_INLINE_VISIBILITY 1034 binder1st<__Operation> 1035 bind1st(const __Operation& __op, const _Tp& __x) 1036 {return binder1st<__Operation>(__op, __x);} 1037 1038 template <class __Operation> 1039 class _LIBCPP_TYPE_VIS_ONLY binder2nd 1040 : public unary_function<typename __Operation::first_argument_type, 1041 typename __Operation::result_type> 1042 { 1043 protected: 1044 __Operation op; 1045 typename __Operation::second_argument_type value; 1046 public: 1047 _LIBCPP_INLINE_VISIBILITY 1048 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 1049 : op(__x), value(__y) {} 1050 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1051 ( typename __Operation::first_argument_type& __x) const 1052 {return op(__x, value);} 1053 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1054 (const typename __Operation::first_argument_type& __x) const 1055 {return op(__x, value);} 1056 }; 1057 1058 template <class __Operation, class _Tp> 1059 inline _LIBCPP_INLINE_VISIBILITY 1060 binder2nd<__Operation> 1061 bind2nd(const __Operation& __op, const _Tp& __x) 1062 {return binder2nd<__Operation>(__op, __x);} 1063 1064 template <class _Arg, class _Result> 1065 class _LIBCPP_TYPE_VIS_ONLY pointer_to_unary_function 1066 : public unary_function<_Arg, _Result> 1067 { 1068 _Result (*__f_)(_Arg); 1069 public: 1070 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 1071 : __f_(__f) {} 1072 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 1073 {return __f_(__x);} 1074 }; 1075 1076 template <class _Arg, class _Result> 1077 inline _LIBCPP_INLINE_VISIBILITY 1078 pointer_to_unary_function<_Arg,_Result> 1079 ptr_fun(_Result (*__f)(_Arg)) 1080 {return pointer_to_unary_function<_Arg,_Result>(__f);} 1081 1082 template <class _Arg1, class _Arg2, class _Result> 1083 class _LIBCPP_TYPE_VIS_ONLY pointer_to_binary_function 1084 : public binary_function<_Arg1, _Arg2, _Result> 1085 { 1086 _Result (*__f_)(_Arg1, _Arg2); 1087 public: 1088 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 1089 : __f_(__f) {} 1090 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 1091 {return __f_(__x, __y);} 1092 }; 1093 1094 template <class _Arg1, class _Arg2, class _Result> 1095 inline _LIBCPP_INLINE_VISIBILITY 1096 pointer_to_binary_function<_Arg1,_Arg2,_Result> 1097 ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 1098 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 1099 1100 template<class _Sp, class _Tp> 1101 class _LIBCPP_TYPE_VIS_ONLY mem_fun_t : public unary_function<_Tp*, _Sp> 1102 { 1103 _Sp (_Tp::*__p_)(); 1104 public: 1105 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 1106 : __p_(__p) {} 1107 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 1108 {return (__p->*__p_)();} 1109 }; 1110 1111 template<class _Sp, class _Tp, class _Ap> 1112 class _LIBCPP_TYPE_VIS_ONLY mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp> 1113 { 1114 _Sp (_Tp::*__p_)(_Ap); 1115 public: 1116 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 1117 : __p_(__p) {} 1118 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 1119 {return (__p->*__p_)(__x);} 1120 }; 1121 1122 template<class _Sp, class _Tp> 1123 inline _LIBCPP_INLINE_VISIBILITY 1124 mem_fun_t<_Sp,_Tp> 1125 mem_fun(_Sp (_Tp::*__f)()) 1126 {return mem_fun_t<_Sp,_Tp>(__f);} 1127 1128 template<class _Sp, class _Tp, class _Ap> 1129 inline _LIBCPP_INLINE_VISIBILITY 1130 mem_fun1_t<_Sp,_Tp,_Ap> 1131 mem_fun(_Sp (_Tp::*__f)(_Ap)) 1132 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1133 1134 template<class _Sp, class _Tp> 1135 class _LIBCPP_TYPE_VIS_ONLY mem_fun_ref_t : public unary_function<_Tp, _Sp> 1136 { 1137 _Sp (_Tp::*__p_)(); 1138 public: 1139 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 1140 : __p_(__p) {} 1141 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 1142 {return (__p.*__p_)();} 1143 }; 1144 1145 template<class _Sp, class _Tp, class _Ap> 1146 class _LIBCPP_TYPE_VIS_ONLY mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp> 1147 { 1148 _Sp (_Tp::*__p_)(_Ap); 1149 public: 1150 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 1151 : __p_(__p) {} 1152 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 1153 {return (__p.*__p_)(__x);} 1154 }; 1155 1156 template<class _Sp, class _Tp> 1157 inline _LIBCPP_INLINE_VISIBILITY 1158 mem_fun_ref_t<_Sp,_Tp> 1159 mem_fun_ref(_Sp (_Tp::*__f)()) 1160 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 1161 1162 template<class _Sp, class _Tp, class _Ap> 1163 inline _LIBCPP_INLINE_VISIBILITY 1164 mem_fun1_ref_t<_Sp,_Tp,_Ap> 1165 mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 1166 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1167 1168 template <class _Sp, class _Tp> 1169 class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_t : public unary_function<const _Tp*, _Sp> 1170 { 1171 _Sp (_Tp::*__p_)() const; 1172 public: 1173 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 1174 : __p_(__p) {} 1175 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 1176 {return (__p->*__p_)();} 1177 }; 1178 1179 template <class _Sp, class _Tp, class _Ap> 1180 class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp> 1181 { 1182 _Sp (_Tp::*__p_)(_Ap) const; 1183 public: 1184 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 1185 : __p_(__p) {} 1186 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 1187 {return (__p->*__p_)(__x);} 1188 }; 1189 1190 template <class _Sp, class _Tp> 1191 inline _LIBCPP_INLINE_VISIBILITY 1192 const_mem_fun_t<_Sp,_Tp> 1193 mem_fun(_Sp (_Tp::*__f)() const) 1194 {return const_mem_fun_t<_Sp,_Tp>(__f);} 1195 1196 template <class _Sp, class _Tp, class _Ap> 1197 inline _LIBCPP_INLINE_VISIBILITY 1198 const_mem_fun1_t<_Sp,_Tp,_Ap> 1199 mem_fun(_Sp (_Tp::*__f)(_Ap) const) 1200 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1201 1202 template <class _Sp, class _Tp> 1203 class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_ref_t : public unary_function<_Tp, _Sp> 1204 { 1205 _Sp (_Tp::*__p_)() const; 1206 public: 1207 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 1208 : __p_(__p) {} 1209 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 1210 {return (__p.*__p_)();} 1211 }; 1212 1213 template <class _Sp, class _Tp, class _Ap> 1214 class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_ref_t 1215 : public binary_function<_Tp, _Ap, _Sp> 1216 { 1217 _Sp (_Tp::*__p_)(_Ap) const; 1218 public: 1219 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 1220 : __p_(__p) {} 1221 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 1222 {return (__p.*__p_)(__x);} 1223 }; 1224 1225 template <class _Sp, class _Tp> 1226 inline _LIBCPP_INLINE_VISIBILITY 1227 const_mem_fun_ref_t<_Sp,_Tp> 1228 mem_fun_ref(_Sp (_Tp::*__f)() const) 1229 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 1230 1231 template <class _Sp, class _Tp, class _Ap> 1232 inline _LIBCPP_INLINE_VISIBILITY 1233 const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 1234 mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 1235 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1236 1237 //////////////////////////////////////////////////////////////////////////////// 1238 // MEMFUN 1239 //============================================================================== 1240 1241 template <class _Tp> 1242 class __mem_fn 1243 : public __weak_result_type<_Tp> 1244 { 1245 public: 1246 // types 1247 typedef _Tp type; 1248 private: 1249 type __f_; 1250 1251 public: 1252 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) : __f_(__f) {} 1253 1254 #ifndef _LIBCPP_HAS_NO_VARIADICS 1255 // invoke 1256 template <class... _ArgTypes> 1257 _LIBCPP_INLINE_VISIBILITY 1258 typename __invoke_return<type, _ArgTypes...>::type 1259 operator() (_ArgTypes&&... __args) const { 1260 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 1261 } 1262 #else 1263 1264 template <class _A0> 1265 typename __invoke_return0<type, _A0>::type 1266 operator() (_A0& __a0) const { 1267 return __invoke(__f_, __a0); 1268 } 1269 1270 template <class _A0, class _A1> 1271 typename __invoke_return1<type, _A0, _A1>::type 1272 operator() (_A0& __a0, _A1& __a1) const { 1273 return __invoke(__f_, __a0, __a1); 1274 } 1275 1276 template <class _A0, class _A1, class _A2> 1277 typename __invoke_return2<type, _A0, _A1, _A2>::type 1278 operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { 1279 return __invoke(__f_, __a0, __a1, __a2); 1280 } 1281 #endif 1282 }; 1283 1284 template<class _Rp, class _Tp> 1285 inline _LIBCPP_INLINE_VISIBILITY 1286 __mem_fn<_Rp _Tp::*> 1287 mem_fn(_Rp _Tp::* __pm) 1288 { 1289 return __mem_fn<_Rp _Tp::*>(__pm); 1290 } 1291 1292 //////////////////////////////////////////////////////////////////////////////// 1293 // FUNCTION 1294 //============================================================================== 1295 1296 // bad_function_call 1297 1298 class _LIBCPP_EXCEPTION_ABI bad_function_call 1299 : public exception 1300 { 1301 }; 1302 1303 template<class _Fp> class _LIBCPP_TYPE_VIS_ONLY function; // undefined 1304 1305 namespace __function 1306 { 1307 1308 template<class _Rp> 1309 struct __maybe_derive_from_unary_function 1310 { 1311 }; 1312 1313 template<class _Rp, class _A1> 1314 struct __maybe_derive_from_unary_function<_Rp(_A1)> 1315 : public unary_function<_A1, _Rp> 1316 { 1317 }; 1318 1319 template<class _Rp> 1320 struct __maybe_derive_from_binary_function 1321 { 1322 }; 1323 1324 template<class _Rp, class _A1, class _A2> 1325 struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 1326 : public binary_function<_A1, _A2, _Rp> 1327 { 1328 }; 1329 1330 } // namespace __function 1331 1332 #ifndef _LIBCPP_HAS_NO_VARIADICS 1333 1334 namespace __function { 1335 1336 template<class _Fp> class __base; 1337 1338 template<class _Rp, class ..._ArgTypes> 1339 class __base<_Rp(_ArgTypes...)> 1340 { 1341 __base(const __base&); 1342 __base& operator=(const __base&); 1343 public: 1344 _LIBCPP_INLINE_VISIBILITY __base() {} 1345 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 1346 virtual __base* __clone() const = 0; 1347 virtual void __clone(__base*) const = 0; 1348 virtual void destroy() _NOEXCEPT = 0; 1349 virtual void destroy_deallocate() _NOEXCEPT = 0; 1350 virtual _Rp operator()(_ArgTypes&& ...) = 0; 1351 #ifndef _LIBCPP_NO_RTTI 1352 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 1353 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 1354 #endif // _LIBCPP_NO_RTTI 1355 }; 1356 1357 template<class _FD, class _Alloc, class _FB> class __func; 1358 1359 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1360 class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 1361 : public __base<_Rp(_ArgTypes...)> 1362 { 1363 __compressed_pair<_Fp, _Alloc> __f_; 1364 public: 1365 _LIBCPP_INLINE_VISIBILITY 1366 explicit __func(_Fp&& __f) 1367 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1368 _VSTD::forward_as_tuple()) {} 1369 _LIBCPP_INLINE_VISIBILITY 1370 explicit __func(const _Fp& __f, const _Alloc& __a) 1371 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1372 _VSTD::forward_as_tuple(__a)) {} 1373 1374 _LIBCPP_INLINE_VISIBILITY 1375 explicit __func(const _Fp& __f, _Alloc&& __a) 1376 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1377 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1378 1379 _LIBCPP_INLINE_VISIBILITY 1380 explicit __func(_Fp&& __f, _Alloc&& __a) 1381 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1382 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1383 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1384 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1385 virtual void destroy() _NOEXCEPT; 1386 virtual void destroy_deallocate() _NOEXCEPT; 1387 virtual _Rp operator()(_ArgTypes&& ... __arg); 1388 #ifndef _LIBCPP_NO_RTTI 1389 virtual const void* target(const type_info&) const _NOEXCEPT; 1390 virtual const std::type_info& target_type() const _NOEXCEPT; 1391 #endif // _LIBCPP_NO_RTTI 1392 }; 1393 1394 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1395 __base<_Rp(_ArgTypes...)>* 1396 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1397 { 1398 typedef allocator_traits<_Alloc> __alloc_traits; 1399 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1400 _Ap __a(__f_.second()); 1401 typedef __allocator_destructor<_Ap> _Dp; 1402 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1403 ::new (__hold.get()) __func(__f_.first(), _Alloc(__a)); 1404 return __hold.release(); 1405 } 1406 1407 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1408 void 1409 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1410 { 1411 ::new (__p) __func(__f_.first(), __f_.second()); 1412 } 1413 1414 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1415 void 1416 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1417 { 1418 __f_.~__compressed_pair<_Fp, _Alloc>(); 1419 } 1420 1421 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1422 void 1423 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1424 { 1425 typedef allocator_traits<_Alloc> __alloc_traits; 1426 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1427 _Ap __a(__f_.second()); 1428 __f_.~__compressed_pair<_Fp, _Alloc>(); 1429 __a.deallocate(this, 1); 1430 } 1431 1432 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1433 _Rp 1434 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1435 { 1436 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1437 return _Invoker::__call(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...); 1438 } 1439 1440 #ifndef _LIBCPP_NO_RTTI 1441 1442 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1443 const void* 1444 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1445 { 1446 if (__ti == typeid(_Fp)) 1447 return &__f_.first(); 1448 return (const void*)0; 1449 } 1450 1451 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1452 const std::type_info& 1453 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1454 { 1455 return typeid(_Fp); 1456 } 1457 1458 #endif // _LIBCPP_NO_RTTI 1459 1460 } // __function 1461 1462 template<class _Rp, class ..._ArgTypes> 1463 class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_ArgTypes...)> 1464 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 1465 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 1466 { 1467 typedef __function::__base<_Rp(_ArgTypes...)> __base; 1468 typename aligned_storage<3*sizeof(void*)>::type __buf_; 1469 __base* __f_; 1470 1471 template <class _Fp> 1472 _LIBCPP_INLINE_VISIBILITY 1473 static bool __not_null(const _Fp&) {return true;} 1474 template <class _R2, class ..._Ap> 1475 _LIBCPP_INLINE_VISIBILITY 1476 static bool __not_null(_R2 (*__p)(_Ap...)) {return __p;} 1477 template <class _R2, class _Cp, class ..._Ap> 1478 _LIBCPP_INLINE_VISIBILITY 1479 static bool __not_null(_R2 (_Cp::*__p)(_Ap...)) {return __p;} 1480 template <class _R2, class _Cp, class ..._Ap> 1481 _LIBCPP_INLINE_VISIBILITY 1482 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const) {return __p;} 1483 template <class _R2, class _Cp, class ..._Ap> 1484 _LIBCPP_INLINE_VISIBILITY 1485 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) volatile) {return __p;} 1486 template <class _R2, class _Cp, class ..._Ap> 1487 _LIBCPP_INLINE_VISIBILITY 1488 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const volatile) {return __p;} 1489 template <class _R2, class ..._Ap> 1490 _LIBCPP_INLINE_VISIBILITY 1491 static bool __not_null(const function<_R2(_Ap...)>& __p) {return !!__p;} 1492 1493 template <class _Fp, bool = !is_same<_Fp, function>::value && 1494 __invokable<_Fp&, _ArgTypes...>::value> 1495 struct __callable; 1496 template <class _Fp> 1497 struct __callable<_Fp, true> 1498 { 1499 static const bool value = is_same<void, _Rp>::value || 1500 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, 1501 _Rp>::value; 1502 }; 1503 template <class _Fp> 1504 struct __callable<_Fp, false> 1505 { 1506 static const bool value = false; 1507 }; 1508 public: 1509 typedef _Rp result_type; 1510 1511 // construct/copy/destroy: 1512 _LIBCPP_INLINE_VISIBILITY 1513 function() _NOEXCEPT : __f_(0) {} 1514 _LIBCPP_INLINE_VISIBILITY 1515 function(nullptr_t) _NOEXCEPT : __f_(0) {} 1516 function(const function&); 1517 function(function&&) _NOEXCEPT; 1518 template<class _Fp> 1519 function(_Fp, typename enable_if 1520 < 1521 __callable<_Fp>::value && 1522 !is_same<_Fp, function>::value 1523 >::type* = 0); 1524 1525 template<class _Alloc> 1526 _LIBCPP_INLINE_VISIBILITY 1527 function(allocator_arg_t, const _Alloc&) _NOEXCEPT : __f_(0) {} 1528 template<class _Alloc> 1529 _LIBCPP_INLINE_VISIBILITY 1530 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT : __f_(0) {} 1531 template<class _Alloc> 1532 function(allocator_arg_t, const _Alloc&, const function&); 1533 template<class _Alloc> 1534 function(allocator_arg_t, const _Alloc&, function&&); 1535 template<class _Fp, class _Alloc> 1536 function(allocator_arg_t, const _Alloc& __a, _Fp __f, 1537 typename enable_if<__callable<_Fp>::value>::type* = 0); 1538 1539 function& operator=(const function&); 1540 function& operator=(function&&) _NOEXCEPT; 1541 function& operator=(nullptr_t) _NOEXCEPT; 1542 template<class _Fp> 1543 typename enable_if 1544 < 1545 __callable<typename decay<_Fp>::type>::value && 1546 !is_same<typename remove_reference<_Fp>::type, function>::value, 1547 function& 1548 >::type 1549 operator=(_Fp&&); 1550 1551 ~function(); 1552 1553 // function modifiers: 1554 void swap(function&) _NOEXCEPT; 1555 template<class _Fp, class _Alloc> 1556 _LIBCPP_INLINE_VISIBILITY 1557 void assign(_Fp&& __f, const _Alloc& __a) 1558 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 1559 1560 // function capacity: 1561 _LIBCPP_INLINE_VISIBILITY 1562 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;} 1563 1564 // deleted overloads close possible hole in the type system 1565 template<class _R2, class... _ArgTypes2> 1566 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 1567 template<class _R2, class... _ArgTypes2> 1568 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 1569 public: 1570 // function invocation: 1571 _Rp operator()(_ArgTypes...) const; 1572 1573 #ifndef _LIBCPP_NO_RTTI 1574 // function target access: 1575 const std::type_info& target_type() const _NOEXCEPT; 1576 template <typename _Tp> _Tp* target() _NOEXCEPT; 1577 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 1578 #endif // _LIBCPP_NO_RTTI 1579 }; 1580 1581 template<class _Rp, class ..._ArgTypes> 1582 function<_Rp(_ArgTypes...)>::function(const function& __f) 1583 { 1584 if (__f.__f_ == 0) 1585 __f_ = 0; 1586 else if (__f.__f_ == (const __base*)&__f.__buf_) 1587 { 1588 __f_ = (__base*)&__buf_; 1589 __f.__f_->__clone(__f_); 1590 } 1591 else 1592 __f_ = __f.__f_->__clone(); 1593 } 1594 1595 template<class _Rp, class ..._ArgTypes> 1596 template <class _Alloc> 1597 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1598 const function& __f) 1599 { 1600 if (__f.__f_ == 0) 1601 __f_ = 0; 1602 else if (__f.__f_ == (const __base*)&__f.__buf_) 1603 { 1604 __f_ = (__base*)&__buf_; 1605 __f.__f_->__clone(__f_); 1606 } 1607 else 1608 __f_ = __f.__f_->__clone(); 1609 } 1610 1611 template<class _Rp, class ..._ArgTypes> 1612 function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 1613 { 1614 if (__f.__f_ == 0) 1615 __f_ = 0; 1616 else if (__f.__f_ == (__base*)&__f.__buf_) 1617 { 1618 __f_ = (__base*)&__buf_; 1619 __f.__f_->__clone(__f_); 1620 } 1621 else 1622 { 1623 __f_ = __f.__f_; 1624 __f.__f_ = 0; 1625 } 1626 } 1627 1628 template<class _Rp, class ..._ArgTypes> 1629 template <class _Alloc> 1630 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1631 function&& __f) 1632 { 1633 if (__f.__f_ == 0) 1634 __f_ = 0; 1635 else if (__f.__f_ == (__base*)&__f.__buf_) 1636 { 1637 __f_ = (__base*)&__buf_; 1638 __f.__f_->__clone(__f_); 1639 } 1640 else 1641 { 1642 __f_ = __f.__f_; 1643 __f.__f_ = 0; 1644 } 1645 } 1646 1647 template<class _Rp, class ..._ArgTypes> 1648 template <class _Fp> 1649 function<_Rp(_ArgTypes...)>::function(_Fp __f, 1650 typename enable_if 1651 < 1652 __callable<_Fp>::value && 1653 !is_same<_Fp, function>::value 1654 >::type*) 1655 : __f_(0) 1656 { 1657 if (__not_null(__f)) 1658 { 1659 typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF; 1660 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) 1661 { 1662 __f_ = (__base*)&__buf_; 1663 ::new (__f_) _FF(_VSTD::move(__f)); 1664 } 1665 else 1666 { 1667 typedef allocator<_FF> _Ap; 1668 _Ap __a; 1669 typedef __allocator_destructor<_Ap> _Dp; 1670 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1671 ::new (__hold.get()) _FF(_VSTD::move(__f), allocator<_Fp>(__a)); 1672 __f_ = __hold.release(); 1673 } 1674 } 1675 } 1676 1677 template<class _Rp, class ..._ArgTypes> 1678 template <class _Fp, class _Alloc> 1679 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, 1680 typename enable_if<__callable<_Fp>::value>::type*) 1681 : __f_(0) 1682 { 1683 typedef allocator_traits<_Alloc> __alloc_traits; 1684 if (__not_null(__f)) 1685 { 1686 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF; 1687 typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; 1688 _Ap __a(__a0); 1689 if (sizeof(_FF) <= sizeof(__buf_) && 1690 is_nothrow_copy_constructible<_Fp>::value && is_nothrow_copy_constructible<_Ap>::value) 1691 { 1692 __f_ = (__base*)&__buf_; 1693 ::new (__f_) _FF(_VSTD::move(__f), _Alloc(__a)); 1694 } 1695 else 1696 { 1697 typedef __allocator_destructor<_Ap> _Dp; 1698 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1699 ::new (__hold.get()) _FF(_VSTD::move(__f), _Alloc(__a)); 1700 __f_ = __hold.release(); 1701 } 1702 } 1703 } 1704 1705 template<class _Rp, class ..._ArgTypes> 1706 function<_Rp(_ArgTypes...)>& 1707 function<_Rp(_ArgTypes...)>::operator=(const function& __f) 1708 { 1709 function(__f).swap(*this); 1710 return *this; 1711 } 1712 1713 template<class _Rp, class ..._ArgTypes> 1714 function<_Rp(_ArgTypes...)>& 1715 function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 1716 { 1717 if (__f_ == (__base*)&__buf_) 1718 __f_->destroy(); 1719 else if (__f_) 1720 __f_->destroy_deallocate(); 1721 __f_ = 0; 1722 if (__f.__f_ == 0) 1723 __f_ = 0; 1724 else if (__f.__f_ == (__base*)&__f.__buf_) 1725 { 1726 __f_ = (__base*)&__buf_; 1727 __f.__f_->__clone(__f_); 1728 } 1729 else 1730 { 1731 __f_ = __f.__f_; 1732 __f.__f_ = 0; 1733 } 1734 return *this; 1735 } 1736 1737 template<class _Rp, class ..._ArgTypes> 1738 function<_Rp(_ArgTypes...)>& 1739 function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 1740 { 1741 if (__f_ == (__base*)&__buf_) 1742 __f_->destroy(); 1743 else if (__f_) 1744 __f_->destroy_deallocate(); 1745 __f_ = 0; 1746 return *this; 1747 } 1748 1749 template<class _Rp, class ..._ArgTypes> 1750 template <class _Fp> 1751 typename enable_if 1752 < 1753 function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value && 1754 !is_same<typename remove_reference<_Fp>::type, function<_Rp(_ArgTypes...)>>::value, 1755 function<_Rp(_ArgTypes...)>& 1756 >::type 1757 function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 1758 { 1759 function(_VSTD::forward<_Fp>(__f)).swap(*this); 1760 return *this; 1761 } 1762 1763 template<class _Rp, class ..._ArgTypes> 1764 function<_Rp(_ArgTypes...)>::~function() 1765 { 1766 if (__f_ == (__base*)&__buf_) 1767 __f_->destroy(); 1768 else if (__f_) 1769 __f_->destroy_deallocate(); 1770 } 1771 1772 template<class _Rp, class ..._ArgTypes> 1773 void 1774 function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 1775 { 1776 if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) 1777 { 1778 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1779 __base* __t = (__base*)&__tempbuf; 1780 __f_->__clone(__t); 1781 __f_->destroy(); 1782 __f_ = 0; 1783 __f.__f_->__clone((__base*)&__buf_); 1784 __f.__f_->destroy(); 1785 __f.__f_ = 0; 1786 __f_ = (__base*)&__buf_; 1787 __t->__clone((__base*)&__f.__buf_); 1788 __t->destroy(); 1789 __f.__f_ = (__base*)&__f.__buf_; 1790 } 1791 else if (__f_ == (__base*)&__buf_) 1792 { 1793 __f_->__clone((__base*)&__f.__buf_); 1794 __f_->destroy(); 1795 __f_ = __f.__f_; 1796 __f.__f_ = (__base*)&__f.__buf_; 1797 } 1798 else if (__f.__f_ == (__base*)&__f.__buf_) 1799 { 1800 __f.__f_->__clone((__base*)&__buf_); 1801 __f.__f_->destroy(); 1802 __f.__f_ = __f_; 1803 __f_ = (__base*)&__buf_; 1804 } 1805 else 1806 _VSTD::swap(__f_, __f.__f_); 1807 } 1808 1809 template<class _Rp, class ..._ArgTypes> 1810 _Rp 1811 function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 1812 { 1813 #ifndef _LIBCPP_NO_EXCEPTIONS 1814 if (__f_ == 0) 1815 throw bad_function_call(); 1816 #endif // _LIBCPP_NO_EXCEPTIONS 1817 return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...); 1818 } 1819 1820 #ifndef _LIBCPP_NO_RTTI 1821 1822 template<class _Rp, class ..._ArgTypes> 1823 const std::type_info& 1824 function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1825 { 1826 if (__f_ == 0) 1827 return typeid(void); 1828 return __f_->target_type(); 1829 } 1830 1831 template<class _Rp, class ..._ArgTypes> 1832 template <typename _Tp> 1833 _Tp* 1834 function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 1835 { 1836 if (__f_ == 0) 1837 return (_Tp*)0; 1838 return (_Tp*)__f_->target(typeid(_Tp)); 1839 } 1840 1841 template<class _Rp, class ..._ArgTypes> 1842 template <typename _Tp> 1843 const _Tp* 1844 function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 1845 { 1846 if (__f_ == 0) 1847 return (const _Tp*)0; 1848 return (const _Tp*)__f_->target(typeid(_Tp)); 1849 } 1850 1851 #endif // _LIBCPP_NO_RTTI 1852 1853 template <class _Rp, class... _ArgTypes> 1854 inline _LIBCPP_INLINE_VISIBILITY 1855 bool 1856 operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 1857 1858 template <class _Rp, class... _ArgTypes> 1859 inline _LIBCPP_INLINE_VISIBILITY 1860 bool 1861 operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 1862 1863 template <class _Rp, class... _ArgTypes> 1864 inline _LIBCPP_INLINE_VISIBILITY 1865 bool 1866 operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 1867 1868 template <class _Rp, class... _ArgTypes> 1869 inline _LIBCPP_INLINE_VISIBILITY 1870 bool 1871 operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 1872 1873 template <class _Rp, class... _ArgTypes> 1874 inline _LIBCPP_INLINE_VISIBILITY 1875 void 1876 swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 1877 {return __x.swap(__y);} 1878 1879 #else // _LIBCPP_HAS_NO_VARIADICS 1880 1881 #include <__functional_03> 1882 1883 #endif 1884 1885 //////////////////////////////////////////////////////////////////////////////// 1886 // BIND 1887 //============================================================================== 1888 1889 template<class _Tp> struct __is_bind_expression : public false_type {}; 1890 template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_bind_expression 1891 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 1892 1893 template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 1894 template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_placeholder 1895 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 1896 1897 namespace placeholders 1898 { 1899 1900 template <int _Np> struct __ph {}; 1901 1902 _LIBCPP_FUNC_VIS extern __ph<1> _1; 1903 _LIBCPP_FUNC_VIS extern __ph<2> _2; 1904 _LIBCPP_FUNC_VIS extern __ph<3> _3; 1905 _LIBCPP_FUNC_VIS extern __ph<4> _4; 1906 _LIBCPP_FUNC_VIS extern __ph<5> _5; 1907 _LIBCPP_FUNC_VIS extern __ph<6> _6; 1908 _LIBCPP_FUNC_VIS extern __ph<7> _7; 1909 _LIBCPP_FUNC_VIS extern __ph<8> _8; 1910 _LIBCPP_FUNC_VIS extern __ph<9> _9; 1911 _LIBCPP_FUNC_VIS extern __ph<10> _10; 1912 1913 } // placeholders 1914 1915 template<int _Np> 1916 struct __is_placeholder<placeholders::__ph<_Np> > 1917 : public integral_constant<int, _Np> {}; 1918 1919 1920 #ifndef _LIBCPP_HAS_NO_VARIADICS 1921 1922 template <class _Tp, class _Uj> 1923 inline _LIBCPP_INLINE_VISIBILITY 1924 _Tp& 1925 __mu(reference_wrapper<_Tp> __t, _Uj&) 1926 { 1927 return __t.get(); 1928 } 1929 1930 template <class _Ti, class ..._Uj, size_t ..._Indx> 1931 inline _LIBCPP_INLINE_VISIBILITY 1932 typename __invoke_of<_Ti&, _Uj...>::type 1933 __mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 1934 { 1935 return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); 1936 } 1937 1938 template <class _Ti, class ..._Uj> 1939 inline _LIBCPP_INLINE_VISIBILITY 1940 typename __lazy_enable_if 1941 < 1942 is_bind_expression<_Ti>::value, 1943 __invoke_of<_Ti&, _Uj...> 1944 >::type 1945 __mu(_Ti& __ti, tuple<_Uj...>& __uj) 1946 { 1947 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 1948 return __mu_expand(__ti, __uj, __indices()); 1949 } 1950 1951 template <bool IsPh, class _Ti, class _Uj> 1952 struct __mu_return2 {}; 1953 1954 template <class _Ti, class _Uj> 1955 struct __mu_return2<true, _Ti, _Uj> 1956 { 1957 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 1958 }; 1959 1960 template <class _Ti, class _Uj> 1961 inline _LIBCPP_INLINE_VISIBILITY 1962 typename enable_if 1963 < 1964 0 < is_placeholder<_Ti>::value, 1965 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 1966 >::type 1967 __mu(_Ti&, _Uj& __uj) 1968 { 1969 const size_t _Indx = is_placeholder<_Ti>::value - 1; 1970 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj)); 1971 } 1972 1973 template <class _Ti, class _Uj> 1974 inline _LIBCPP_INLINE_VISIBILITY 1975 typename enable_if 1976 < 1977 !is_bind_expression<_Ti>::value && 1978 is_placeholder<_Ti>::value == 0 && 1979 !__is_reference_wrapper<_Ti>::value, 1980 _Ti& 1981 >::type 1982 __mu(_Ti& __ti, _Uj&) 1983 { 1984 return __ti; 1985 } 1986 1987 template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 1988 class _TupleUj> 1989 struct ____mu_return; 1990 1991 template <bool _Invokable, class _Ti, class ..._Uj> 1992 struct ____mu_return_invokable // false 1993 { 1994 typedef __nat type; 1995 }; 1996 1997 template <class _Ti, class ..._Uj> 1998 struct ____mu_return_invokable<true, _Ti, _Uj...> 1999 { 2000 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 2001 }; 2002 2003 template <class _Ti, class ..._Uj> 2004 struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> > 2005 : public ____mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> 2006 { 2007 }; 2008 2009 template <class _Ti, class _TupleUj> 2010 struct ____mu_return<_Ti, false, false, true, _TupleUj> 2011 { 2012 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 2013 _TupleUj>::type&& type; 2014 }; 2015 2016 template <class _Ti, class _TupleUj> 2017 struct ____mu_return<_Ti, true, false, false, _TupleUj> 2018 { 2019 typedef typename _Ti::type& type; 2020 }; 2021 2022 template <class _Ti, class _TupleUj> 2023 struct ____mu_return<_Ti, false, false, false, _TupleUj> 2024 { 2025 typedef _Ti& type; 2026 }; 2027 2028 template <class _Ti, class _TupleUj> 2029 struct __mu_return 2030 : public ____mu_return<_Ti, 2031 __is_reference_wrapper<_Ti>::value, 2032 is_bind_expression<_Ti>::value, 2033 0 < is_placeholder<_Ti>::value && 2034 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, 2035 _TupleUj> 2036 { 2037 }; 2038 2039 template <class _Fp, class _BoundArgs, class _TupleUj> 2040 struct __is_valid_bind_return 2041 { 2042 static const bool value = false; 2043 }; 2044 2045 template <class _Fp, class ..._BoundArgs, class _TupleUj> 2046 struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 2047 { 2048 static const bool value = __invokable<_Fp, 2049 typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; 2050 }; 2051 2052 template <class _Fp, class ..._BoundArgs, class _TupleUj> 2053 struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 2054 { 2055 static const bool value = __invokable<_Fp, 2056 typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value; 2057 }; 2058 2059 template <class _Fp, class _BoundArgs, class _TupleUj, 2060 bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value> 2061 struct __bind_return; 2062 2063 template <class _Fp, class ..._BoundArgs, class _TupleUj> 2064 struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> 2065 { 2066 typedef typename __invoke_of 2067 < 2068 _Fp&, 2069 typename __mu_return 2070 < 2071 _BoundArgs, 2072 _TupleUj 2073 >::type... 2074 >::type type; 2075 }; 2076 2077 template <class _Fp, class ..._BoundArgs, class _TupleUj> 2078 struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> 2079 { 2080 typedef typename __invoke_of 2081 < 2082 _Fp&, 2083 typename __mu_return 2084 < 2085 const _BoundArgs, 2086 _TupleUj 2087 >::type... 2088 >::type type; 2089 }; 2090 2091 template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 2092 inline _LIBCPP_INLINE_VISIBILITY 2093 typename __bind_return<_Fp, _BoundArgs, _Args>::type 2094 __apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 2095 _Args&& __args) 2096 { 2097 return __invoke(__f, __mu(_VSTD::get<_Indx>(__bound_args), __args)...); 2098 } 2099 2100 template<class _Fp, class ..._BoundArgs> 2101 class __bind 2102 : public __weak_result_type<typename decay<_Fp>::type> 2103 { 2104 protected: 2105 typedef typename decay<_Fp>::type _Fd; 2106 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 2107 private: 2108 _Fd __f_; 2109 _Td __bound_args_; 2110 2111 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 2112 public: 2113 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2114 2115 _LIBCPP_INLINE_VISIBILITY 2116 __bind(const __bind& __b) 2117 : __f_(__b.__f_), 2118 __bound_args_(__b.__bound_args_) {} 2119 2120 _LIBCPP_INLINE_VISIBILITY 2121 __bind& operator=(const __bind& __b) 2122 { 2123 __f_ = __b.__f_; 2124 __bound_args_ = __b.__bound_args_; 2125 return *this; 2126 } 2127 2128 _LIBCPP_INLINE_VISIBILITY 2129 __bind(__bind&& __b) 2130 : __f_(_VSTD::move(__b.__f_)), 2131 __bound_args_(_VSTD::move(__b.__bound_args_)) {} 2132 2133 _LIBCPP_INLINE_VISIBILITY 2134 __bind& operator=(__bind&& __b) 2135 { 2136 __f_ = _VSTD::move(__b.__f_); 2137 __bound_args_ = _VSTD::move(__b.__bound_args_); 2138 return *this; 2139 } 2140 2141 #endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2142 2143 template <class _Gp, class ..._BA, 2144 class = typename enable_if 2145 < 2146 is_constructible<_Fd, _Gp>::value && 2147 !is_same<typename remove_reference<_Gp>::type, 2148 __bind>::value 2149 >::type> 2150 _LIBCPP_INLINE_VISIBILITY 2151 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 2152 : __f_(_VSTD::forward<_Gp>(__f)), 2153 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 2154 2155 template <class ..._Args> 2156 _LIBCPP_INLINE_VISIBILITY 2157 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 2158 operator()(_Args&& ...__args) 2159 { 2160 return __apply_functor(__f_, __bound_args_, __indices(), 2161 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2162 } 2163 2164 template <class ..._Args> 2165 _LIBCPP_INLINE_VISIBILITY 2166 typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type 2167 operator()(_Args&& ...__args) const 2168 { 2169 return __apply_functor(__f_, __bound_args_, __indices(), 2170 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2171 } 2172 }; 2173 2174 template<class _Fp, class ..._BoundArgs> 2175 struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 2176 2177 template<class _Rp, class _Fp, class ..._BoundArgs> 2178 class __bind_r 2179 : public __bind<_Fp, _BoundArgs...> 2180 { 2181 typedef __bind<_Fp, _BoundArgs...> base; 2182 typedef typename base::_Fd _Fd; 2183 typedef typename base::_Td _Td; 2184 public: 2185 typedef _Rp result_type; 2186 2187 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2188 2189 _LIBCPP_INLINE_VISIBILITY 2190 __bind_r(const __bind_r& __b) 2191 : base(_VSTD::forward<const base&>(__b)) {} 2192 2193 _LIBCPP_INLINE_VISIBILITY 2194 __bind_r& operator=(const __bind_r& __b) 2195 { 2196 base::operator=(_VSTD::forward<const base&>(__b)); 2197 return *this; 2198 } 2199 2200 _LIBCPP_INLINE_VISIBILITY 2201 __bind_r(__bind_r&& __b) 2202 : base(_VSTD::forward<base>(__b)) {} 2203 2204 _LIBCPP_INLINE_VISIBILITY 2205 __bind_r& operator=(__bind_r&& __b) 2206 { 2207 base::operator=(_VSTD::forward<base>(__b)); 2208 return *this; 2209 } 2210 2211 #endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2212 2213 template <class _Gp, class ..._BA, 2214 class = typename enable_if 2215 < 2216 is_constructible<_Fd, _Gp>::value && 2217 !is_same<typename remove_reference<_Gp>::type, 2218 __bind_r>::value 2219 >::type> 2220 _LIBCPP_INLINE_VISIBILITY 2221 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 2222 : base(_VSTD::forward<_Gp>(__f), 2223 _VSTD::forward<_BA>(__bound_args)...) {} 2224 2225 template <class ..._Args> 2226 _LIBCPP_INLINE_VISIBILITY 2227 typename enable_if 2228 < 2229 is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, 2230 result_type>::value || is_void<_Rp>::value, 2231 result_type 2232 >::type 2233 operator()(_Args&& ...__args) 2234 { 2235 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2236 return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); 2237 } 2238 2239 template <class ..._Args> 2240 _LIBCPP_INLINE_VISIBILITY 2241 typename enable_if 2242 < 2243 is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, 2244 result_type>::value || is_void<_Rp>::value, 2245 result_type 2246 >::type 2247 operator()(_Args&& ...__args) const 2248 { 2249 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2250 return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); 2251 } 2252 }; 2253 2254 template<class _Rp, class _Fp, class ..._BoundArgs> 2255 struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 2256 2257 template<class _Fp, class ..._BoundArgs> 2258 inline _LIBCPP_INLINE_VISIBILITY 2259 __bind<_Fp, _BoundArgs...> 2260 bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2261 { 2262 typedef __bind<_Fp, _BoundArgs...> type; 2263 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2264 } 2265 2266 template<class _Rp, class _Fp, class ..._BoundArgs> 2267 inline _LIBCPP_INLINE_VISIBILITY 2268 __bind_r<_Rp, _Fp, _BoundArgs...> 2269 bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2270 { 2271 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 2272 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2273 } 2274 2275 #endif // _LIBCPP_HAS_NO_VARIADICS 2276 2277 template <> 2278 struct _LIBCPP_TYPE_VIS_ONLY hash<bool> 2279 : public unary_function<bool, size_t> 2280 { 2281 _LIBCPP_INLINE_VISIBILITY 2282 size_t operator()(bool __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2283 }; 2284 2285 template <> 2286 struct _LIBCPP_TYPE_VIS_ONLY hash<char> 2287 : public unary_function<char, size_t> 2288 { 2289 _LIBCPP_INLINE_VISIBILITY 2290 size_t operator()(char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2291 }; 2292 2293 template <> 2294 struct _LIBCPP_TYPE_VIS_ONLY hash<signed char> 2295 : public unary_function<signed char, size_t> 2296 { 2297 _LIBCPP_INLINE_VISIBILITY 2298 size_t operator()(signed char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2299 }; 2300 2301 template <> 2302 struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned char> 2303 : public unary_function<unsigned char, size_t> 2304 { 2305 _LIBCPP_INLINE_VISIBILITY 2306 size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2307 }; 2308 2309 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 2310 2311 template <> 2312 struct _LIBCPP_TYPE_VIS_ONLY hash<char16_t> 2313 : public unary_function<char16_t, size_t> 2314 { 2315 _LIBCPP_INLINE_VISIBILITY 2316 size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2317 }; 2318 2319 template <> 2320 struct _LIBCPP_TYPE_VIS_ONLY hash<char32_t> 2321 : public unary_function<char32_t, size_t> 2322 { 2323 _LIBCPP_INLINE_VISIBILITY 2324 size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2325 }; 2326 2327 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 2328 2329 template <> 2330 struct _LIBCPP_TYPE_VIS_ONLY hash<wchar_t> 2331 : public unary_function<wchar_t, size_t> 2332 { 2333 _LIBCPP_INLINE_VISIBILITY 2334 size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2335 }; 2336 2337 template <> 2338 struct _LIBCPP_TYPE_VIS_ONLY hash<short> 2339 : public unary_function<short, size_t> 2340 { 2341 _LIBCPP_INLINE_VISIBILITY 2342 size_t operator()(short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2343 }; 2344 2345 template <> 2346 struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned short> 2347 : public unary_function<unsigned short, size_t> 2348 { 2349 _LIBCPP_INLINE_VISIBILITY 2350 size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2351 }; 2352 2353 template <> 2354 struct _LIBCPP_TYPE_VIS_ONLY hash<int> 2355 : public unary_function<int, size_t> 2356 { 2357 _LIBCPP_INLINE_VISIBILITY 2358 size_t operator()(int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2359 }; 2360 2361 template <> 2362 struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned int> 2363 : public unary_function<unsigned int, size_t> 2364 { 2365 _LIBCPP_INLINE_VISIBILITY 2366 size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2367 }; 2368 2369 template <> 2370 struct _LIBCPP_TYPE_VIS_ONLY hash<long> 2371 : public unary_function<long, size_t> 2372 { 2373 _LIBCPP_INLINE_VISIBILITY 2374 size_t operator()(long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2375 }; 2376 2377 template <> 2378 struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long> 2379 : public unary_function<unsigned long, size_t> 2380 { 2381 _LIBCPP_INLINE_VISIBILITY 2382 size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2383 }; 2384 2385 template <> 2386 struct _LIBCPP_TYPE_VIS_ONLY hash<long long> 2387 : public __scalar_hash<long long> 2388 { 2389 }; 2390 2391 template <> 2392 struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long long> 2393 : public __scalar_hash<unsigned long long> 2394 { 2395 }; 2396 2397 template <> 2398 struct _LIBCPP_TYPE_VIS_ONLY hash<float> 2399 : public __scalar_hash<float> 2400 { 2401 _LIBCPP_INLINE_VISIBILITY 2402 size_t operator()(float __v) const _NOEXCEPT 2403 { 2404 // -0.0 and 0.0 should return same hash 2405 if (__v == 0) 2406 return 0; 2407 return __scalar_hash<float>::operator()(__v); 2408 } 2409 }; 2410 2411 template <> 2412 struct _LIBCPP_TYPE_VIS_ONLY hash<double> 2413 : public __scalar_hash<double> 2414 { 2415 _LIBCPP_INLINE_VISIBILITY 2416 size_t operator()(double __v) const _NOEXCEPT 2417 { 2418 // -0.0 and 0.0 should return same hash 2419 if (__v == 0) 2420 return 0; 2421 return __scalar_hash<double>::operator()(__v); 2422 } 2423 }; 2424 2425 template <> 2426 struct _LIBCPP_TYPE_VIS_ONLY hash<long double> 2427 : public __scalar_hash<long double> 2428 { 2429 _LIBCPP_INLINE_VISIBILITY 2430 size_t operator()(long double __v) const _NOEXCEPT 2431 { 2432 // -0.0 and 0.0 should return same hash 2433 if (__v == 0) 2434 return 0; 2435 #if defined(__i386__) 2436 // Zero out padding bits 2437 union 2438 { 2439 long double __t; 2440 struct 2441 { 2442 size_t __a; 2443 size_t __b; 2444 size_t __c; 2445 size_t __d; 2446 } __s; 2447 } __u; 2448 __u.__s.__a = 0; 2449 __u.__s.__b = 0; 2450 __u.__s.__c = 0; 2451 __u.__s.__d = 0; 2452 __u.__t = __v; 2453 return __u.__s.__a ^ __u.__s.__b ^ __u.__s.__c ^ __u.__s.__d; 2454 #elif defined(__x86_64__) 2455 // Zero out padding bits 2456 union 2457 { 2458 long double __t; 2459 struct 2460 { 2461 size_t __a; 2462 size_t __b; 2463 } __s; 2464 } __u; 2465 __u.__s.__a = 0; 2466 __u.__s.__b = 0; 2467 __u.__t = __v; 2468 return __u.__s.__a ^ __u.__s.__b; 2469 #else 2470 return __scalar_hash<long double>::operator()(__v); 2471 #endif 2472 } 2473 }; 2474 2475 #if _LIBCPP_STD_VER > 11 2476 template <class _Tp> 2477 struct _LIBCPP_TYPE_VIS_ONLY hash 2478 : public unary_function<_Tp, size_t> 2479 { 2480 static_assert(is_enum<_Tp>::value, "This hash only works for enumeration types"); 2481 2482 _LIBCPP_INLINE_VISIBILITY 2483 size_t operator()(_Tp __v) const _NOEXCEPT 2484 { 2485 typedef typename underlying_type<_Tp>::type type; 2486 return hash<type>{}(static_cast<type>(__v)); 2487 } 2488 }; 2489 #endif 2490 2491 2492 #if _LIBCPP_STD_VER > 14 2493 template <class _Fn, class ..._Args> 2494 result_of_t<_Fn&&(_Args&&...)> 2495 invoke(_Fn&& __f, _Args&&... __args) { 2496 return __invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); 2497 } 2498 #endif 2499 2500 // struct hash<T*> in <memory> 2501 2502 _LIBCPP_END_NAMESPACE_STD 2503 2504 #endif // _LIBCPP_FUNCTIONAL 2505
