2 //===------------------------ functional ----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_FUNCTIONAL
12 #define _LIBCPP_FUNCTIONAL
20 template <class Arg, class Result>
23 typedef Arg argument_type;
24 typedef Result result_type;
27 template <class Arg1, class Arg2, class Result>
28 struct binary_function
30 typedef Arg1 first_argument_type;
31 typedef Arg2 second_argument_type;
32 typedef Result result_type;
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
43 typedef see below result_type; // Not always defined
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;
51 reference_wrapper& operator=(const reference_wrapper<T>& x) noexcept;
54 operator T& () const noexcept;
55 T& get() const noexcept;
58 template <class... ArgTypes>
59 typename result_of<T(ArgTypes...)>::type
60 operator() (ArgTypes&&...) const;
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;
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;
72 struct plus : binary_function<T, T, T>
74 T operator()(const T& x, const T& y) const;
78 struct minus : binary_function<T, T, T>
80 T operator()(const T& x, const T& y) const;
84 struct multiplies : binary_function<T, T, T>
86 T operator()(const T& x, const T& y) const;
90 struct divides : binary_function<T, T, T>
92 T operator()(const T& x, const T& y) const;
96 struct modulus : binary_function<T, T, T>
98 T operator()(const T& x, const T& y) const;
102 struct negate : unary_function<T, T>
104 T operator()(const T& x) const;
108 struct equal_to : binary_function<T, T, bool>
110 bool operator()(const T& x, const T& y) const;
114 struct not_equal_to : binary_function<T, T, bool>
116 bool operator()(const T& x, const T& y) const;
120 struct greater : binary_function<T, T, bool>
122 bool operator()(const T& x, const T& y) const;
126 struct less : binary_function<T, T, bool>
128 bool operator()(const T& x, const T& y) const;
132 struct greater_equal : binary_function<T, T, bool>
134 bool operator()(const T& x, const T& y) const;
138 struct less_equal : binary_function<T, T, bool>
140 bool operator()(const T& x, const T& y) const;
144 struct logical_and : binary_function<T, T, bool>
146 bool operator()(const T& x, const T& y) const;
150 struct logical_or : binary_function<T, T, bool>
152 bool operator()(const T& x, const T& y) const;
156 struct logical_not : unary_function<T, bool>
158 bool operator()(const T& x) const;
161 template <class Predicate>
163 : public unary_function<typename Predicate::argument_type, bool>
166 explicit unary_negate(const Predicate& pred);
167 bool operator()(const typename Predicate::argument_type& x) const;
170 template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred);
172 template <class Predicate>
174 : public binary_function<typename Predicate::first_argument_type,
175 typename Predicate::second_argument_type,
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;
184 template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred);
186 template<class T> struct is_bind_expression;
187 template<class T> struct is_placeholder;
189 template<class Fn, class... BoundArgs>
190 unspecified bind(Fn&&, BoundArgs&&...);
191 template<class R, class Fn, class... BoundArgs>
192 unspecified bind(Fn&&, BoundArgs&&...);
194 namespace placeholders {
195 // M is the implementation-defined number of placeholders
196 extern unspecified _1;
197 extern unspecified _2;
201 extern unspecified _Mp;
204 template <class Operation>
206 : public unary_function<typename Operation::second_argument_type,
207 typename Operation::result_type>
211 typename Operation::first_argument_type value;
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;
218 template <class Operation, class T>
219 binder1st<Operation> bind1st(const Operation& op, const T& x);
221 template <class Operation>
223 : public unary_function<typename Operation::first_argument_type,
224 typename Operation::result_type>
228 typename Operation::second_argument_type value;
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;
235 template <class Operation, class T>
236 binder2nd<Operation> bind2nd(const Operation& op, const T& x);
238 template <class Arg, class Result>
239 class pointer_to_unary_function : public unary_function<Arg, Result>
242 explicit pointer_to_unary_function(Result (*f)(Arg));
243 Result operator()(Arg x) const;
246 template <class Arg, class Result>
247 pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg));
249 template <class Arg1, class Arg2, class Result>
250 class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result>
253 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2));
254 Result operator()(Arg1 x, Arg2 y) const;
257 template <class Arg1, class Arg2, class Result>
258 pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2));
260 template<class S, class T>
261 class mem_fun_t : public unary_function<T*, S>
264 explicit mem_fun_t(S (T::*p)());
265 S operator()(T* p) const;
268 template<class S, class T, class A>
269 class mem_fun1_t : public binary_function<T*, A, S>
272 explicit mem_fun1_t(S (T::*p)(A));
273 S operator()(T* p, A x) const;
276 template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)());
277 template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A));
279 template<class S, class T>
280 class mem_fun_ref_t : public unary_function<T, S>
283 explicit mem_fun_ref_t(S (T::*p)());
284 S operator()(T& p) const;
287 template<class S, class T, class A>
288 class mem_fun1_ref_t : public binary_function<T, A, S>
291 explicit mem_fun1_ref_t(S (T::*p)(A));
292 S operator()(T& p, A x) const;
295 template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)());
296 template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A));
298 template <class S, class T>
299 class const_mem_fun_t : public unary_function<const T*, S>
302 explicit const_mem_fun_t(S (T::*p)() const);
303 S operator()(const T* p) const;
306 template <class S, class T, class A>
307 class const_mem_fun1_t : public binary_function<const T*, A, S>
310 explicit const_mem_fun1_t(S (T::*p)(A) const);
311 S operator()(const T* p, A x) const;
314 template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const);
315 template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const);
317 template <class S, class T>
318 class const_mem_fun_ref_t : public unary_function<T, S>
321 explicit const_mem_fun_ref_t(S (T::*p)() const);
322 S operator()(const T& p) const;
325 template <class S, class T, class A>
326 class const_mem_fun1_ref_t : public binary_function<T, A, S>
329 explicit const_mem_fun1_ref_t(S (T::*p)(A) const);
330 S operator()(const T& p, A x) const;
333 template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const);
334 template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const);
336 template<class R, class T> unspecified mem_fn(R T::*);
337 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...));
338 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const);
339 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile);
340 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile);
341 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) &);
342 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const &);
343 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile &);
344 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile &);
345 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) &&);
346 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const &&);
347 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) volatile &&);
348 template<class R, class T, class... Args> unspecified mem_fn(R (T::*)(Args...) const volatile &&);
350 class bad_function_call
355 template<class> class function; // undefined
357 template<class R, class... ArgTypes>
358 class 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
365 typedef R result_type;
367 // construct/copy/destroy:
369 function(nullptr_t) noexcept;
370 function(const function&);
371 function(function&&) noexcept;
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);
385 function& operator=(const function&);
386 function& operator=(function&&) noexcept;
387 function& operator=(nullptr_t) noexcept;
389 function& operator=(F&&);
391 function& operator=(reference_wrapper<F>) noexcept;
395 // function modifiers:
396 void swap(function&) noexcept;
397 template<class F, class Alloc>
398 void assign(F&&, const Alloc&);
400 // function capacity:
401 explicit operator bool() const noexcept;
403 // function invocation:
404 R operator()(ArgTypes...) const;
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;
412 // Null pointer comparisons:
413 template <class R, class ... ArgTypes>
414 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept;
416 template <class R, class ... ArgTypes>
417 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept;
419 template <class R, class ... ArgTypes>
420 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept;
422 template <class R, class ... ArgTypes>
423 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept;
425 // specialized algorithms:
426 template <class R, class ... ArgTypes>
427 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept;
429 template <class T> struct hash;
431 template <> struct hash<bool>;
432 template <> struct hash<char>;
433 template <> struct hash<signed char>;
434 template <> struct hash<unsigned char>;
435 template <> struct hash<char16_t>;
436 template <> struct hash<char32_t>;
437 template <> struct hash<wchar_t>;
438 template <> struct hash<short>;
439 template <> struct hash<unsigned short>;
440 template <> struct hash<int>;
441 template <> struct hash<unsigned int>;
442 template <> struct hash<long>;
443 template <> struct hash<long long>;
444 template <> struct hash<unsigned long>;
445 template <> struct hash<unsigned long long>;
447 template <> struct hash<float>;
448 template <> struct hash<double>;
449 template <> struct hash<long double>;
451 template<class T> struct hash<T*>;
455 POLICY: For non-variadic implementations, the number of arguments is limited
456 to 3. It is hoped that the need for non-variadic implementations
462 #include <type_traits>
468 #include <__functional_base>
470 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
471 #pragma GCC system_header
474 _LIBCPP_BEGIN_NAMESPACE_STD
477 struct _LIBCPP_VISIBLE plus : binary_function<_Tp, _Tp, _Tp>
479 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
484 struct _LIBCPP_VISIBLE minus : binary_function<_Tp, _Tp, _Tp>
486 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
491 struct _LIBCPP_VISIBLE multiplies : binary_function<_Tp, _Tp, _Tp>
493 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
498 struct _LIBCPP_VISIBLE divides : binary_function<_Tp, _Tp, _Tp>
500 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
505 struct _LIBCPP_VISIBLE modulus : binary_function<_Tp, _Tp, _Tp>
507 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
512 struct _LIBCPP_VISIBLE negate : unary_function<_Tp, _Tp>
514 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x) const
519 struct _LIBCPP_VISIBLE equal_to : binary_function<_Tp, _Tp, bool>
521 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
526 struct _LIBCPP_VISIBLE not_equal_to : binary_function<_Tp, _Tp, bool>
528 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
533 struct _LIBCPP_VISIBLE greater : binary_function<_Tp, _Tp, bool>
535 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
539 // less in <__functional_base>
542 struct _LIBCPP_VISIBLE greater_equal : binary_function<_Tp, _Tp, bool>
544 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
549 struct _LIBCPP_VISIBLE less_equal : binary_function<_Tp, _Tp, bool>
551 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
556 struct _LIBCPP_VISIBLE logical_and : binary_function<_Tp, _Tp, bool>
558 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
563 struct _LIBCPP_VISIBLE logical_or : binary_function<_Tp, _Tp, bool>
565 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const
570 struct _LIBCPP_VISIBLE logical_not : unary_function<_Tp, bool>
572 _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x) const
577 struct _LIBCPP_VISIBLE bit_and : binary_function<_Tp, _Tp, _Tp>
579 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
584 struct _LIBCPP_VISIBLE bit_or : binary_function<_Tp, _Tp, _Tp>
586 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
591 struct _LIBCPP_VISIBLE bit_xor : binary_function<_Tp, _Tp, _Tp>
593 _LIBCPP_INLINE_VISIBILITY _Tp operator()(const _Tp& __x, const _Tp& __y) const
597 template <class _Predicate>
598 class _LIBCPP_VISIBLE unary_negate
599 : public unary_function<typename _Predicate::argument_type, bool>
603 _LIBCPP_INLINE_VISIBILITY explicit unary_negate(const _Predicate& __pred)
605 _LIBCPP_INLINE_VISIBILITY bool operator()(const typename _Predicate::argument_type& __x) const
606 {return !__pred_(__x);}
609 template <class _Predicate>
610 inline _LIBCPP_INLINE_VISIBILITY
611 unary_negate<_Predicate>
612 not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);}
614 template <class _Predicate>
615 class _LIBCPP_VISIBLE binary_negate
616 : public binary_function<typename _Predicate::first_argument_type,
617 typename _Predicate::second_argument_type,
622 _LIBCPP_INLINE_VISIBILITY explicit binary_negate(const _Predicate& __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);}
629 template <class _Predicate>
630 inline _LIBCPP_INLINE_VISIBILITY
631 binary_negate<_Predicate>
632 not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);}
634 template <class __Operation>
635 class _LIBCPP_VISIBLE binder1st
636 : public unary_function<typename __Operation::second_argument_type,
637 typename __Operation::result_type>
641 typename __Operation::first_argument_type value;
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);}
654 template <class __Operation, class _Tp>
655 inline _LIBCPP_INLINE_VISIBILITY
656 binder1st<__Operation>
657 bind1st(const __Operation& __op, const _Tp& __x)
658 {return binder1st<__Operation>(__op, __x);}
660 template <class __Operation>
661 class _LIBCPP_VISIBLE binder2nd
662 : public unary_function<typename __Operation::first_argument_type,
663 typename __Operation::result_type>
667 typename __Operation::second_argument_type value;
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);}
680 template <class __Operation, class _Tp>
681 inline _LIBCPP_INLINE_VISIBILITY
682 binder2nd<__Operation>
683 bind2nd(const __Operation& __op, const _Tp& __x)
684 {return binder2nd<__Operation>(__op, __x);}
686 template <class _Arg, class _Result>
687 class _LIBCPP_VISIBLE pointer_to_unary_function
688 : public unary_function<_Arg, _Result>
690 _Result (*__f_)(_Arg);
692 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg))
694 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const
698 template <class _Arg, class _Result>
699 inline _LIBCPP_INLINE_VISIBILITY
700 pointer_to_unary_function<_Arg,_Result>
701 ptr_fun(_Result (*__f)(_Arg))
702 {return pointer_to_unary_function<_Arg,_Result>(__f);}
704 template <class _Arg1, class _Arg2, class _Result>
705 class _LIBCPP_VISIBLE pointer_to_binary_function
706 : public binary_function<_Arg1, _Arg2, _Result>
708 _Result (*__f_)(_Arg1, _Arg2);
710 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2))
712 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const
713 {return __f_(__x, __y);}
716 template <class _Arg1, class _Arg2, class _Result>
717 inline _LIBCPP_INLINE_VISIBILITY
718 pointer_to_binary_function<_Arg1,_Arg2,_Result>
719 ptr_fun(_Result (*__f)(_Arg1,_Arg2))
720 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);}
722 template<class _Sp, class _Tp>
723 class _LIBCPP_VISIBLE mem_fun_t : public unary_function<_Tp*, _Sp>
727 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)())
729 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const
730 {return (__p->*__p_)();}
733 template<class _Sp, class _Tp, class _Ap>
734 class _LIBCPP_VISIBLE mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp>
736 _Sp (_Tp::*__p_)(_Ap);
738 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap))
740 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const
741 {return (__p->*__p_)(__x);}
744 template<class _Sp, class _Tp>
745 inline _LIBCPP_INLINE_VISIBILITY
747 mem_fun(_Sp (_Tp::*__f)())
748 {return mem_fun_t<_Sp,_Tp>(__f);}
750 template<class _Sp, class _Tp, class _Ap>
751 inline _LIBCPP_INLINE_VISIBILITY
752 mem_fun1_t<_Sp,_Tp,_Ap>
753 mem_fun(_Sp (_Tp::*__f)(_Ap))
754 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);}
756 template<class _Sp, class _Tp>
757 class _LIBCPP_VISIBLE mem_fun_ref_t : public unary_function<_Tp, _Sp>
761 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)())
763 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const
764 {return (__p.*__p_)();}
767 template<class _Sp, class _Tp, class _Ap>
768 class _LIBCPP_VISIBLE mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp>
770 _Sp (_Tp::*__p_)(_Ap);
772 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap))
774 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const
775 {return (__p.*__p_)(__x);}
778 template<class _Sp, class _Tp>
779 inline _LIBCPP_INLINE_VISIBILITY
780 mem_fun_ref_t<_Sp,_Tp>
781 mem_fun_ref(_Sp (_Tp::*__f)())
782 {return mem_fun_ref_t<_Sp,_Tp>(__f);}
784 template<class _Sp, class _Tp, class _Ap>
785 inline _LIBCPP_INLINE_VISIBILITY
786 mem_fun1_ref_t<_Sp,_Tp,_Ap>
787 mem_fun_ref(_Sp (_Tp::*__f)(_Ap))
788 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);}
790 template <class _Sp, class _Tp>
791 class _LIBCPP_VISIBLE const_mem_fun_t : public unary_function<const _Tp*, _Sp>
793 _Sp (_Tp::*__p_)() const;
795 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const)
797 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const
798 {return (__p->*__p_)();}
801 template <class _Sp, class _Tp, class _Ap>
802 class _LIBCPP_VISIBLE const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp>
804 _Sp (_Tp::*__p_)(_Ap) const;
806 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const)
808 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const
809 {return (__p->*__p_)(__x);}
812 template <class _Sp, class _Tp>
813 inline _LIBCPP_INLINE_VISIBILITY
814 const_mem_fun_t<_Sp,_Tp>
815 mem_fun(_Sp (_Tp::*__f)() const)
816 {return const_mem_fun_t<_Sp,_Tp>(__f);}
818 template <class _Sp, class _Tp, class _Ap>
819 inline _LIBCPP_INLINE_VISIBILITY
820 const_mem_fun1_t<_Sp,_Tp,_Ap>
821 mem_fun(_Sp (_Tp::*__f)(_Ap) const)
822 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);}
824 template <class _Sp, class _Tp>
825 class _LIBCPP_VISIBLE const_mem_fun_ref_t : public unary_function<_Tp, _Sp>
827 _Sp (_Tp::*__p_)() const;
829 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const)
831 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const
832 {return (__p.*__p_)();}
835 template <class _Sp, class _Tp, class _Ap>
836 class _LIBCPP_VISIBLE const_mem_fun1_ref_t
837 : public binary_function<_Tp, _Ap, _Sp>
839 _Sp (_Tp::*__p_)(_Ap) const;
841 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const)
843 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const
844 {return (__p.*__p_)(__x);}
847 template <class _Sp, class _Tp>
848 inline _LIBCPP_INLINE_VISIBILITY
849 const_mem_fun_ref_t<_Sp,_Tp>
850 mem_fun_ref(_Sp (_Tp::*__f)() const)
851 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);}
853 template <class _Sp, class _Tp, class _Ap>
854 inline _LIBCPP_INLINE_VISIBILITY
855 const_mem_fun1_ref_t<_Sp,_Tp,_Ap>
856 mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const)
857 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);}
859 #ifdef _LIBCPP_HAS_NO_VARIADICS
861 #include <__functional_03>
863 #else // _LIBCPP_HAS_NO_VARIADICS
867 : public __weak_result_type<_Tp>
876 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) : __f_(__f) {}
879 template <class... _ArgTypes>
880 _LIBCPP_INLINE_VISIBILITY
881 typename __invoke_return<type, _ArgTypes...>::type
882 operator() (_ArgTypes&&... __args)
884 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...);
888 template<class _Rp, class _Tp>
889 inline _LIBCPP_INLINE_VISIBILITY
891 mem_fn(_Rp _Tp::* __pm)
893 return __mem_fn<_Rp _Tp::*>(__pm);
896 template<class _Rp, class _Tp, class ..._Args>
897 inline _LIBCPP_INLINE_VISIBILITY
898 __mem_fn<_Rp (_Tp::*)(_Args...)>
899 mem_fn(_Rp (_Tp::* __pm)(_Args...))
901 return __mem_fn<_Rp (_Tp::*)(_Args...)>(__pm);
904 template<class _Rp, class _Tp, class ..._Args>
905 inline _LIBCPP_INLINE_VISIBILITY
906 __mem_fn<_Rp (_Tp::*)(_Args...) const>
907 mem_fn(_Rp (_Tp::* __pm)(_Args...) const)
909 return __mem_fn<_Rp (_Tp::*)(_Args...) const>(__pm);
912 template<class _Rp, class _Tp, class ..._Args>
913 inline _LIBCPP_INLINE_VISIBILITY
914 __mem_fn<_Rp (_Tp::*)(_Args...) volatile>
915 mem_fn(_Rp (_Tp::* __pm)(_Args...) volatile)
917 return __mem_fn<_Rp (_Tp::*)(_Args...) volatile>(__pm);
920 template<class _Rp, class _Tp, class ..._Args>
921 inline _LIBCPP_INLINE_VISIBILITY
922 __mem_fn<_Rp (_Tp::*)(_Args...) const volatile>
923 mem_fn(_Rp (_Tp::* __pm)(_Args...) const volatile)
925 return __mem_fn<_Rp (_Tp::*)(_Args...) const volatile>(__pm);
930 class _LIBCPP_EXCEPTION_ABI bad_function_call
935 template<class _Fp> class _LIBCPP_VISIBLE function; // undefined
940 template<class _Rp, class ..._ArgTypes>
941 struct __maybe_derive_from_unary_function
945 template<class _Rp, class _A1>
946 struct __maybe_derive_from_unary_function<_Rp(_A1)>
947 : public unary_function<_A1, _Rp>
951 template<class _Rp, class ..._ArgTypes>
952 struct __maybe_derive_from_binary_function
956 template<class _Rp, class _A1, class _A2>
957 struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)>
958 : public binary_function<_A1, _A2, _Rp>
962 template<class _Fp> class __base;
964 template<class _Rp, class ..._ArgTypes>
965 class __base<_Rp(_ArgTypes...)>
967 __base(const __base&);
968 __base& operator=(const __base&);
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
983 template<class _FD, class _Alloc, class _FB> class __func;
985 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
986 class __func<_Fp, _Alloc, _Rp(_ArgTypes...)>
987 : public __base<_Rp(_ArgTypes...)>
989 __compressed_pair<_Fp, _Alloc> __f_;
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)) {}
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))) {}
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
1020 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1021 __base<_Rp(_ArgTypes...)>*
1022 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const
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();
1032 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1034 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const
1036 ::new (__p) __func(__f_.first(), __f_.second());
1039 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1041 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT
1043 __f_.~__compressed_pair<_Fp, _Alloc>();
1046 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1048 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT
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);
1056 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1058 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg)
1060 return __invoke(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...);
1063 #ifndef _LIBCPP_NO_RTTI
1065 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1067 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT
1069 if (__ti == typeid(_Fp))
1070 return &__f_.first();
1071 return (const void*)0;
1074 template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes>
1075 const std::type_info&
1076 __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT
1081 #endif // _LIBCPP_NO_RTTI
1085 template<class _Rp, class ..._ArgTypes>
1086 class _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...)>
1090 typedef __function::__base<_Rp(_ArgTypes...)> __base;
1091 aligned_storage<3*sizeof(void*)>::type __buf_;
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;}
1116 template <class _Fp, bool = !is_same<_Fp, function>::value &&
1117 __invokable<_Fp&, _ArgTypes...>::value>
1119 template <class _Fp>
1120 struct __callable<_Fp, true>
1122 static const bool value =
1123 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type,
1126 template <class _Fp>
1127 struct __callable<_Fp, false>
1129 static const bool value = false;
1132 typedef _Rp result_type;
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;
1143 typename enable_if<__callable<_Fp>::value>::type* = 0);
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);
1159 function& operator=(const function&);
1160 function& operator=(function&&) _NOEXCEPT;
1161 function& operator=(nullptr_t) _NOEXCEPT;
1165 __callable<typename decay<_Fp>::type>::value,
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);}
1179 // function capacity:
1180 _LIBCPP_INLINE_VISIBILITY
1181 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;}
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;
1189 // function invocation:
1190 _Rp operator()(_ArgTypes...) const;
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
1200 template<class _Rp, class ..._ArgTypes>
1201 function<_Rp(_ArgTypes...)>::function(const function& __f)
1205 else if (__f.__f_ == (const __base*)&__f.__buf_)
1207 __f_ = (__base*)&__buf_;
1208 __f.__f_->__clone(__f_);
1211 __f_ = __f.__f_->__clone();
1214 template<class _Rp, class ..._ArgTypes>
1215 template <class _Alloc>
1216 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&,
1217 const function& __f)
1221 else if (__f.__f_ == (const __base*)&__f.__buf_)
1223 __f_ = (__base*)&__buf_;
1224 __f.__f_->__clone(__f_);
1227 __f_ = __f.__f_->__clone();
1230 template<class _Rp, class ..._ArgTypes>
1231 function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT
1235 else if (__f.__f_ == (__base*)&__f.__buf_)
1237 __f_ = (__base*)&__buf_;
1238 __f.__f_->__clone(__f_);
1247 template<class _Rp, class ..._ArgTypes>
1248 template <class _Alloc>
1249 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&,
1254 else if (__f.__f_ == (__base*)&__f.__buf_)
1256 __f_ = (__base*)&__buf_;
1257 __f.__f_->__clone(__f_);
1266 template<class _Rp, class ..._ArgTypes>
1267 template <class _Fp>
1268 function<_Rp(_ArgTypes...)>::function(_Fp __f,
1269 typename enable_if<__callable<_Fp>::value>::type*)
1272 if (__not_null(__f))
1274 typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF;
1275 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value)
1277 __f_ = (__base*)&__buf_;
1278 ::new (__f_) _FF(_VSTD::move(__f));
1282 typedef allocator<_FF> _Ap;
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();
1292 template<class _Rp, class ..._ArgTypes>
1293 template <class _Fp, class _Alloc>
1294 function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,
1295 typename enable_if<__callable<_Fp>::value>::type*)
1298 typedef allocator_traits<_Alloc> __alloc_traits;
1299 if (__not_null(__f))
1301 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF;
1302 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value)
1304 __f_ = (__base*)&__buf_;
1305 ::new (__f_) _FF(_VSTD::move(__f));
1309 typedef typename __alloc_traits::template
1310 #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1313 rebind_alloc<_FF>::other
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();
1325 template<class _Rp, class ..._ArgTypes>
1326 function<_Rp(_ArgTypes...)>&
1327 function<_Rp(_ArgTypes...)>::operator=(const function& __f)
1329 function(__f).swap(*this);
1333 template<class _Rp, class ..._ArgTypes>
1334 function<_Rp(_ArgTypes...)>&
1335 function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT
1337 if (__f_ == (__base*)&__buf_)
1340 __f_->destroy_deallocate();
1344 else if (__f.__f_ == (__base*)&__f.__buf_)
1346 __f_ = (__base*)&__buf_;
1347 __f.__f_->__clone(__f_);
1357 template<class _Rp, class ..._ArgTypes>
1358 function<_Rp(_ArgTypes...)>&
1359 function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT
1361 if (__f_ == (__base*)&__buf_)
1364 __f_->destroy_deallocate();
1369 template<class _Rp, class ..._ArgTypes>
1370 template <class _Fp>
1373 function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value,
1374 function<_Rp(_ArgTypes...)>&
1376 function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f)
1378 function(_VSTD::forward<_Fp>(__f)).swap(*this);
1382 template<class _Rp, class ..._ArgTypes>
1383 function<_Rp(_ArgTypes...)>::~function()
1385 if (__f_ == (__base*)&__buf_)
1388 __f_->destroy_deallocate();
1391 template<class _Rp, class ..._ArgTypes>
1393 function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT
1395 if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_)
1397 typename aligned_storage<sizeof(__buf_)>::type __tempbuf;
1398 __base* __t = (__base*)&__tempbuf;
1402 __f.__f_->__clone((__base*)&__buf_);
1403 __f.__f_->destroy();
1405 __f_ = (__base*)&__buf_;
1406 __t->__clone((__base*)&__f.__buf_);
1408 __f.__f_ = (__base*)&__f.__buf_;
1410 else if (__f_ == (__base*)&__buf_)
1412 __f_->__clone((__base*)&__f.__buf_);
1415 __f.__f_ = (__base*)&__f.__buf_;
1417 else if (__f.__f_ == (__base*)&__f.__buf_)
1419 __f.__f_->__clone((__base*)&__buf_);
1420 __f.__f_->destroy();
1422 __f_ = (__base*)&__buf_;
1425 _VSTD::swap(__f_, __f.__f_);
1428 template<class _Rp, class ..._ArgTypes>
1430 function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const
1432 #ifndef _LIBCPP_NO_EXCEPTIONS
1434 throw bad_function_call();
1435 #endif // _LIBCPP_NO_EXCEPTIONS
1436 return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...);
1439 #ifndef _LIBCPP_NO_RTTI
1441 template<class _Rp, class ..._ArgTypes>
1442 const std::type_info&
1443 function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT
1446 return typeid(void);
1447 return __f_->target_type();
1450 template<class _Rp, class ..._ArgTypes>
1451 template <typename _Tp>
1453 function<_Rp(_ArgTypes...)>::target() _NOEXCEPT
1457 return (_Tp*)__f_->target(typeid(_Tp));
1460 template<class _Rp, class ..._ArgTypes>
1461 template <typename _Tp>
1463 function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT
1466 return (const _Tp*)0;
1467 return (const _Tp*)__f_->target(typeid(_Tp));
1470 #endif // _LIBCPP_NO_RTTI
1472 template <class _Rp, class... _ArgTypes>
1473 inline _LIBCPP_INLINE_VISIBILITY
1475 operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;}
1477 template <class _Rp, class... _ArgTypes>
1478 inline _LIBCPP_INLINE_VISIBILITY
1480 operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;}
1482 template <class _Rp, class... _ArgTypes>
1483 inline _LIBCPP_INLINE_VISIBILITY
1485 operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;}
1487 template <class _Rp, class... _ArgTypes>
1488 inline _LIBCPP_INLINE_VISIBILITY
1490 operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;}
1492 template <class _Rp, class... _ArgTypes>
1493 inline _LIBCPP_INLINE_VISIBILITY
1495 swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT
1496 {return __x.swap(__y);}
1498 template<class _Tp> struct __is_bind_expression : public false_type {};
1499 template<class _Tp> struct _LIBCPP_VISIBLE is_bind_expression
1500 : public __is_bind_expression<typename remove_cv<_Tp>::type> {};
1502 template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {};
1503 template<class _Tp> struct _LIBCPP_VISIBLE is_placeholder
1504 : public __is_placeholder<typename remove_cv<_Tp>::type> {};
1506 namespace placeholders
1509 template <int _Np> struct __ph {};
1520 extern __ph<10> _10;
1525 struct __is_placeholder<placeholders::__ph<_Np> >
1526 : public integral_constant<int, _Np> {};
1528 template <class _Tp, class _Uj>
1529 inline _LIBCPP_INLINE_VISIBILITY
1531 __mu(reference_wrapper<_Tp> __t, _Uj&)
1536 template <class _Ti, class ..._Uj, size_t ..._Indx>
1537 inline _LIBCPP_INLINE_VISIBILITY
1538 typename __invoke_of<_Ti&, _Uj...>::type
1539 __mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>)
1541 return __ti(_VSTD::forward<_Uj>(get<_Indx>(__uj))...);
1544 template <class _Ti, class ..._Uj>
1545 inline _LIBCPP_INLINE_VISIBILITY
1548 is_bind_expression<_Ti>::value,
1549 typename __invoke_of<_Ti&, _Uj...>::type
1551 __mu(_Ti& __ti, tuple<_Uj...>& __uj)
1553 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices;
1554 return __mu_expand(__ti, __uj, __indices());
1557 template <bool IsPh, class _Ti, class _Uj>
1558 struct __mu_return2 {};
1560 template <class _Ti, class _Uj>
1561 struct __mu_return2<true, _Ti, _Uj>
1563 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type;
1566 template <class _Ti, class _Uj>
1567 inline _LIBCPP_INLINE_VISIBILITY
1570 0 < is_placeholder<_Ti>::value,
1571 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type
1573 __mu(_Ti&, _Uj& __uj)
1575 const size_t _Indx = is_placeholder<_Ti>::value - 1;
1576 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(get<_Indx>(__uj));
1579 template <class _Ti, class _Uj>
1580 inline _LIBCPP_INLINE_VISIBILITY
1583 !is_bind_expression<_Ti>::value &&
1584 is_placeholder<_Ti>::value == 0 &&
1585 !__is_reference_wrapper<_Ti>::value,
1588 __mu(_Ti& __ti, _Uj&)
1593 template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh,
1595 struct ____mu_return;
1597 template <class _Ti, class ..._Uj>
1598 struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> >
1600 typedef typename __invoke_of<_Ti&, _Uj...>::type type;
1603 template <class _Ti, class _TupleUj>
1604 struct ____mu_return<_Ti, false, false, true, _TupleUj>
1606 typedef typename tuple_element<is_placeholder<_Ti>::value - 1,
1607 _TupleUj>::type&& type;
1610 template <class _Ti, class _TupleUj>
1611 struct ____mu_return<_Ti, true, false, false, _TupleUj>
1613 typedef typename _Ti::type& type;
1616 template <class _Ti, class _TupleUj>
1617 struct ____mu_return<_Ti, false, false, false, _TupleUj>
1622 template <class _Ti, class _TupleUj>
1624 : public ____mu_return<_Ti,
1625 __is_reference_wrapper<_Ti>::value,
1626 is_bind_expression<_Ti>::value,
1627 0 < is_placeholder<_Ti>::value,
1632 template <class _Fp, class _BoundArgs, class _TupleUj>
1633 struct __bind_return;
1635 template <class _Fp, class ..._BoundArgs, class _TupleUj>
1636 struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj>
1638 typedef typename __invoke_of
1641 typename __mu_return
1649 template <class _Fp, class ..._BoundArgs, class _TupleUj>
1650 struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj>
1652 typedef typename __invoke_of
1655 typename __mu_return
1663 template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args>
1664 inline _LIBCPP_INLINE_VISIBILITY
1665 typename __bind_return<_Fp, _BoundArgs, _Args>::type
1666 __apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>,
1669 return __invoke(__f, __mu(get<_Indx>(__bound_args), __args)...);
1672 template<class _Fp, class ..._BoundArgs>
1674 : public __weak_result_type<typename decay<_Fp>::type>
1676 typedef typename decay<_Fp>::type _Fd;
1677 typedef tuple<typename decay<_BoundArgs>::type...> _Td;
1681 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices;
1683 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
1685 _LIBCPP_INLINE_VISIBILITY
1686 __bind(const __bind& __b)
1688 __bound_args_(__b.__bound_args_) {}
1690 _LIBCPP_INLINE_VISIBILITY
1691 __bind& operator=(const __bind& __b)
1694 __bound_args_ = __b.__bound_args_;
1698 _LIBCPP_INLINE_VISIBILITY
1699 __bind(__bind&& __b)
1700 : __f_(_VSTD::move(__b.__f_)),
1701 __bound_args_(_VSTD::move(__b.__bound_args_)) {}
1703 _LIBCPP_INLINE_VISIBILITY
1704 __bind& operator=(__bind&& __b)
1706 __f_ = _VSTD::move(__b.__f_);
1707 __bound_args_ = _VSTD::move(__b.__bound_args_);
1711 #endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
1713 template <class _Gp, class ..._BA,
1714 class = typename enable_if
1716 is_constructible<_Fd, _Gp>::value
1718 _LIBCPP_INLINE_VISIBILITY
1719 explicit __bind(_Gp&& __f, _BA&& ...__bound_args)
1720 : __f_(_VSTD::forward<_Gp>(__f)),
1721 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {}
1723 template <class ..._Args>
1724 _LIBCPP_INLINE_VISIBILITY
1725 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type
1726 operator()(_Args&& ...__args)
1728 return __apply_functor(__f_, __bound_args_, __indices(),
1729 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...));
1732 template <class ..._Args>
1733 _LIBCPP_INLINE_VISIBILITY
1734 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type
1735 operator()(_Args&& ...__args) const
1737 return __apply_functor(__f_, __bound_args_, __indices(),
1738 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...));
1742 template<class _Fp, class ..._BoundArgs>
1743 struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {};
1745 template<class _Rp, class _Fp, class ..._BoundArgs>
1747 : public __bind<_Fp, _BoundArgs...>
1749 typedef __bind<_Fp, _BoundArgs...> base;
1751 typedef _Rp result_type;
1753 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
1755 _LIBCPP_INLINE_VISIBILITY
1756 __bind_r(const __bind_r& __b)
1757 : base(_VSTD::forward<const base&>(__b)) {}
1759 _LIBCPP_INLINE_VISIBILITY
1760 __bind_r& operator=(const __bind_r& __b)
1762 base::operator=(_VSTD::forward<const base&>(__b));
1766 _LIBCPP_INLINE_VISIBILITY
1767 __bind_r(__bind_r&& __b)
1768 : base(_VSTD::forward<base>(__b)) {}
1770 _LIBCPP_INLINE_VISIBILITY
1771 __bind_r& operator=(__bind_r&& __b)
1773 base::operator=(_VSTD::forward<base>(__b));
1777 #endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
1779 template <class _Gp, class ..._BA>
1780 _LIBCPP_INLINE_VISIBILITY
1781 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args)
1782 : base(_VSTD::forward<_Gp>(__f),
1783 _VSTD::forward<_BA>(__bound_args)...) {}
1785 template <class ..._Args>
1786 _LIBCPP_INLINE_VISIBILITY
1788 operator()(_Args&& ...__args)
1790 return base::operator()(_VSTD::forward<_Args>(__args)...);
1793 template <class ..._Args>
1794 _LIBCPP_INLINE_VISIBILITY
1796 operator()(_Args&& ...__args) const
1798 return base::operator()(_VSTD::forward<_Args>(__args)...);
1802 template<class _Rp, class _Fp, class ..._BoundArgs>
1803 struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {};
1805 template<class _Fp, class ..._BoundArgs>
1806 inline _LIBCPP_INLINE_VISIBILITY
1807 __bind<_Fp, _BoundArgs...>
1808 bind(_Fp&& __f, _BoundArgs&&... __bound_args)
1810 typedef __bind<_Fp, _BoundArgs...> type;
1811 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...);
1814 template<class _Rp, class _Fp, class ..._BoundArgs>
1815 inline _LIBCPP_INLINE_VISIBILITY
1816 __bind_r<_Rp, _Fp, _BoundArgs...>
1817 bind(_Fp&& __f, _BoundArgs&&... __bound_args)
1819 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type;
1820 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...);
1823 #endif // _LIBCPP_HAS_NO_VARIADICS
1826 struct _LIBCPP_VISIBLE hash<bool>
1827 : public unary_function<bool, size_t>
1829 _LIBCPP_INLINE_VISIBILITY
1830 size_t operator()(bool __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1834 struct _LIBCPP_VISIBLE hash<char>
1835 : public unary_function<char, size_t>
1837 _LIBCPP_INLINE_VISIBILITY
1838 size_t operator()(char __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1842 struct _LIBCPP_VISIBLE hash<signed char>
1843 : public unary_function<signed char, size_t>
1845 _LIBCPP_INLINE_VISIBILITY
1846 size_t operator()(signed char __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1850 struct _LIBCPP_VISIBLE hash<unsigned char>
1851 : public unary_function<unsigned char, size_t>
1853 _LIBCPP_INLINE_VISIBILITY
1854 size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1857 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
1860 struct _LIBCPP_VISIBLE hash<char16_t>
1861 : public unary_function<char16_t, size_t>
1863 _LIBCPP_INLINE_VISIBILITY
1864 size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1868 struct _LIBCPP_VISIBLE hash<char32_t>
1869 : public unary_function<char32_t, size_t>
1871 _LIBCPP_INLINE_VISIBILITY
1872 size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1875 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
1878 struct _LIBCPP_VISIBLE hash<wchar_t>
1879 : public unary_function<wchar_t, size_t>
1881 _LIBCPP_INLINE_VISIBILITY
1882 size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1886 struct _LIBCPP_VISIBLE hash<short>
1887 : public unary_function<short, size_t>
1889 _LIBCPP_INLINE_VISIBILITY
1890 size_t operator()(short __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1894 struct _LIBCPP_VISIBLE hash<unsigned short>
1895 : public unary_function<unsigned short, size_t>
1897 _LIBCPP_INLINE_VISIBILITY
1898 size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1902 struct _LIBCPP_VISIBLE hash<int>
1903 : public unary_function<int, size_t>
1905 _LIBCPP_INLINE_VISIBILITY
1906 size_t operator()(int __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1910 struct _LIBCPP_VISIBLE hash<unsigned int>
1911 : public unary_function<unsigned int, size_t>
1913 _LIBCPP_INLINE_VISIBILITY
1914 size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1918 struct _LIBCPP_VISIBLE hash<long>
1919 : public unary_function<long, size_t>
1921 _LIBCPP_INLINE_VISIBILITY
1922 size_t operator()(long __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1926 struct _LIBCPP_VISIBLE hash<unsigned long>
1927 : public unary_function<unsigned long, size_t>
1929 _LIBCPP_INLINE_VISIBILITY
1930 size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast<size_t>(__v);}
1934 struct _LIBCPP_VISIBLE hash<long long>
1935 : public __scalar_hash<long long>
1940 struct _LIBCPP_VISIBLE hash<unsigned long long>
1941 : public __scalar_hash<unsigned long long>
1946 struct _LIBCPP_VISIBLE hash<float>
1947 : public __scalar_hash<float>
1949 _LIBCPP_INLINE_VISIBILITY
1950 size_t operator()(float __v) const _NOEXCEPT
1952 // -0.0 and 0.0 should return same hash
1955 return __scalar_hash<float>::operator()(__v);
1960 struct _LIBCPP_VISIBLE hash<double>
1961 : public __scalar_hash<double>
1963 _LIBCPP_INLINE_VISIBILITY
1964 size_t operator()(double __v) const _NOEXCEPT
1966 // -0.0 and 0.0 should return same hash
1969 return __scalar_hash<double>::operator()(__v);
1974 struct _LIBCPP_VISIBLE hash<long double>
1975 : public __scalar_hash<long double>
1977 _LIBCPP_INLINE_VISIBILITY
1978 size_t operator()(long double __v) const _NOEXCEPT
1980 // -0.0 and 0.0 should return same hash
1983 #if defined(__i386__)
1984 // Zero out padding bits
2001 return __u.__a ^ __u.__b ^ __u.__c ^ __u.__d;
2002 #elif defined(__x86_64__)
2003 // Zero out padding bits
2016 return __u.__a ^ __u.__b;
2018 return __scalar_hash<long double>::operator()(__v);
2023 // struct hash<T*> in <memory>
2025 _LIBCPP_END_NAMESPACE_STD
2027 #endif // _LIBCPP_FUNCTIONAL