// -*- C++ -*-//===----------------------------------------------------------------------===////// The LLVM Compiler Infrastructure//// This file is dual licensed under the MIT and the University of Illinois Open// Source Licenses. See LICENSE.TXT for details.////===----------------------------------------------------------------------===//#ifndef _LIBCPP_FUNCTIONAL_03#define _LIBCPP_FUNCTIONAL_03// manual variadic expansion for <functional>#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)#pragma GCC system_header#endifnamespace __function {template<class _Fp> class __base;template<class _Rp>class __base<_Rp()>{__base(const __base&);__base& operator=(const __base&);public:__base() {}virtual ~__base() {}virtual __base* __clone() const = 0;virtual void __clone(__base*) const = 0;virtual void destroy() = 0;virtual void destroy_deallocate() = 0;virtual _Rp operator()() = 0;#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const = 0;virtual const std::type_info& target_type() const = 0;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0>class __base<_Rp(_A0)>{__base(const __base&);__base& operator=(const __base&);public:__base() {}virtual ~__base() {}virtual __base* __clone() const = 0;virtual void __clone(__base*) const = 0;virtual void destroy() = 0;virtual void destroy_deallocate() = 0;virtual _Rp operator()(_A0) = 0;#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const = 0;virtual const std::type_info& target_type() const = 0;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0, class _A1>class __base<_Rp(_A0, _A1)>{__base(const __base&);__base& operator=(const __base&);public:__base() {}virtual ~__base() {}virtual __base* __clone() const = 0;virtual void __clone(__base*) const = 0;virtual void destroy() = 0;virtual void destroy_deallocate() = 0;virtual _Rp operator()(_A0, _A1) = 0;#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const = 0;virtual const std::type_info& target_type() const = 0;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0, class _A1, class _A2>class __base<_Rp(_A0, _A1, _A2)>{__base(const __base&);__base& operator=(const __base&);public:__base() {}virtual ~__base() {}virtual __base* __clone() const = 0;virtual void __clone(__base*) const = 0;virtual void destroy() = 0;virtual void destroy_deallocate() = 0;virtual _Rp operator()(_A0, _A1, _A2) = 0;#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const = 0;virtual const std::type_info& target_type() const = 0;#endif // _LIBCPP_NO_RTTI};template<class _FD, class _Alloc, class _FB> class __func;template<class _Fp, class _Alloc, class _Rp>class __func<_Fp, _Alloc, _Rp()>: public __base<_Rp()>{__compressed_pair<_Fp, _Alloc> __f_;public:explicit __func(_Fp __f) : __f_(_VSTD::move(__f)) {}explicit __func(_Fp __f, _Alloc __a) : __f_(_VSTD::move(__f), _VSTD::move(__a)) {}virtual __base<_Rp()>* __clone() const;virtual void __clone(__base<_Rp()>*) const;virtual void destroy();virtual void destroy_deallocate();virtual _Rp operator()();#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const;virtual const std::type_info& target_type() const;#endif // _LIBCPP_NO_RTTI};template<class _Fp, class _Alloc, class _Rp>__base<_Rp()>*__func<_Fp, _Alloc, _Rp()>::__clone() const{typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) __func(__f_.first(), _Alloc(__a));return __hold.release();}template<class _Fp, class _Alloc, class _Rp>void__func<_Fp, _Alloc, _Rp()>::__clone(__base<_Rp()>* __p) const{::new (__p) __func(__f_.first(), __f_.second());}template<class _Fp, class _Alloc, class _Rp>void__func<_Fp, _Alloc, _Rp()>::destroy(){__f_.~__compressed_pair<_Fp, _Alloc>();}template<class _Fp, class _Alloc, class _Rp>void__func<_Fp, _Alloc, _Rp()>::destroy_deallocate(){typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());__f_.~__compressed_pair<_Fp, _Alloc>();__a.deallocate(this, 1);}template<class _Fp, class _Alloc, class _Rp>_Rp__func<_Fp, _Alloc, _Rp()>::operator()(){typedef __invoke_void_return_wrapper<_Rp> _Invoker;return _Invoker::__call(__f_.first());}#ifndef _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp>const void*__func<_Fp, _Alloc, _Rp()>::target(const type_info& __ti) const{if (__ti == typeid(_Fp))return &__f_.first();return (const void*)0;}template<class _Fp, class _Alloc, class _Rp>const std::type_info&__func<_Fp, _Alloc, _Rp()>::target_type() const{return typeid(_Fp);}#endif // _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0>class __func<_Fp, _Alloc, _Rp(_A0)>: public __base<_Rp(_A0)>{__compressed_pair<_Fp, _Alloc> __f_;public:_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f)) {}_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a): __f_(_VSTD::move(__f), _VSTD::move(__a)) {}virtual __base<_Rp(_A0)>* __clone() const;virtual void __clone(__base<_Rp(_A0)>*) const;virtual void destroy();virtual void destroy_deallocate();virtual _Rp operator()(_A0);#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const;virtual const std::type_info& target_type() const;#endif // _LIBCPP_NO_RTTI};template<class _Fp, class _Alloc, class _Rp, class _A0>__base<_Rp(_A0)>*__func<_Fp, _Alloc, _Rp(_A0)>::__clone() const{typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) __func(__f_.first(), _Alloc(__a));return __hold.release();}template<class _Fp, class _Alloc, class _Rp, class _A0>void__func<_Fp, _Alloc, _Rp(_A0)>::__clone(__base<_Rp(_A0)>* __p) const{::new (__p) __func(__f_.first(), __f_.second());}template<class _Fp, class _Alloc, class _Rp, class _A0>void__func<_Fp, _Alloc, _Rp(_A0)>::destroy(){__f_.~__compressed_pair<_Fp, _Alloc>();}template<class _Fp, class _Alloc, class _Rp, class _A0>void__func<_Fp, _Alloc, _Rp(_A0)>::destroy_deallocate(){typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());__f_.~__compressed_pair<_Fp, _Alloc>();__a.deallocate(this, 1);}template<class _Fp, class _Alloc, class _Rp, class _A0>_Rp__func<_Fp, _Alloc, _Rp(_A0)>::operator()(_A0 __a0){typedef __invoke_void_return_wrapper<_Rp> _Invoker;return _Invoker::__call(__f_.first(), __a0);}#ifndef _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0>const void*__func<_Fp, _Alloc, _Rp(_A0)>::target(const type_info& __ti) const{if (__ti == typeid(_Fp))return &__f_.first();return (const void*)0;}template<class _Fp, class _Alloc, class _Rp, class _A0>const std::type_info&__func<_Fp, _Alloc, _Rp(_A0)>::target_type() const{return typeid(_Fp);}#endif // _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>class __func<_Fp, _Alloc, _Rp(_A0, _A1)>: public __base<_Rp(_A0, _A1)>{__compressed_pair<_Fp, _Alloc> __f_;public:_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f)) {}_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a): __f_(_VSTD::move(__f), _VSTD::move(__a)) {}virtual __base<_Rp(_A0, _A1)>* __clone() const;virtual void __clone(__base<_Rp(_A0, _A1)>*) const;virtual void destroy();virtual void destroy_deallocate();virtual _Rp operator()(_A0, _A1);#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const;virtual const std::type_info& target_type() const;#endif // _LIBCPP_NO_RTTI};template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>__base<_Rp(_A0, _A1)>*__func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone() const{typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) __func(__f_.first(), _Alloc(__a));return __hold.release();}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>void__func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone(__base<_Rp(_A0, _A1)>* __p) const{::new (__p) __func(__f_.first(), __f_.second());}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>void__func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy(){__f_.~__compressed_pair<_Fp, _Alloc>();}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>void__func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy_deallocate(){typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());__f_.~__compressed_pair<_Fp, _Alloc>();__a.deallocate(this, 1);}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>_Rp__func<_Fp, _Alloc, _Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1){typedef __invoke_void_return_wrapper<_Rp> _Invoker;return _Invoker::__call(__f_.first(), __a0, __a1);}#ifndef _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>const void*__func<_Fp, _Alloc, _Rp(_A0, _A1)>::target(const type_info& __ti) const{if (__ti == typeid(_Fp))return &__f_.first();return (const void*)0;}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1>const std::type_info&__func<_Fp, _Alloc, _Rp(_A0, _A1)>::target_type() const{return typeid(_Fp);}#endif // _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>class __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>: public __base<_Rp(_A0, _A1, _A2)>{__compressed_pair<_Fp, _Alloc> __f_;public:_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f)) {}_LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a): __f_(_VSTD::move(__f), _VSTD::move(__a)) {}virtual __base<_Rp(_A0, _A1, _A2)>* __clone() const;virtual void __clone(__base<_Rp(_A0, _A1, _A2)>*) const;virtual void destroy();virtual void destroy_deallocate();virtual _Rp operator()(_A0, _A1, _A2);#ifndef _LIBCPP_NO_RTTIvirtual const void* target(const type_info&) const;virtual const std::type_info& target_type() const;#endif // _LIBCPP_NO_RTTI};template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>__base<_Rp(_A0, _A1, _A2)>*__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone() const{typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) __func(__f_.first(), _Alloc(__a));return __hold.release();}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>void__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone(__base<_Rp(_A0, _A1, _A2)>* __p) const{::new (__p) __func(__f_.first(), __f_.second());}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>void__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy(){__f_.~__compressed_pair<_Fp, _Alloc>();}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>void__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy_deallocate(){typedef allocator_traits<_Alloc> __alloc_traits;typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap;_Ap __a(__f_.second());__f_.~__compressed_pair<_Fp, _Alloc>();__a.deallocate(this, 1);}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>_Rp__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2){typedef __invoke_void_return_wrapper<_Rp> _Invoker;return _Invoker::__call(__f_.first(), __a0, __a1, __a2);}#ifndef _LIBCPP_NO_RTTItemplate<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>const void*__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target(const type_info& __ti) const{if (__ti == typeid(_Fp))return &__f_.first();return (const void*)0;}template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2>const std::type_info&__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target_type() const{return typeid(_Fp);}#endif // _LIBCPP_NO_RTTI} // __functiontemplate<class _Rp>class _LIBCPP_TYPE_VIS_ONLY function<_Rp()>{typedef __function::__base<_Rp()> __base;aligned_storage<3*sizeof(void*)>::type __buf_;__base* __f_;public:typedef _Rp result_type;// 20.7.16.2.1, construct/copy/destroy:_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}function(const function&);template<class _Fp>function(_Fp,typename enable_if<!is_integral<_Fp>::value>::type* = 0);template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&) : __f_(0) {}template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}template<class _Alloc>function(allocator_arg_t, const _Alloc&, const function&);template<class _Fp, class _Alloc>function(allocator_arg_t, const _Alloc& __a, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type* = 0);function& operator=(const function&);function& operator=(nullptr_t);template<class _Fp>typename enable_if<!is_integral<_Fp>::value,function&>::typeoperator=(_Fp);~function();// 20.7.16.2.2, function modifiers:void swap(function&);template<class _Fp, class _Alloc>_LIBCPP_INLINE_VISIBILITYvoid assign(_Fp __f, const _Alloc& __a){function(allocator_arg, __a, __f).swap(*this);}// 20.7.16.2.3, function capacity:_LIBCPP_INLINE_VISIBILITY operator bool() const {return __f_;}private:// deleted overloads close possible hole in the type systemtemplate<class _R2>bool operator==(const function<_R2()>&) const;// = delete;template<class _R2>bool operator!=(const function<_R2()>&) const;// = delete;public:// 20.7.16.2.4, function invocation:_Rp operator()() const;#ifndef _LIBCPP_NO_RTTI// 20.7.16.2.5, function target access:const std::type_info& target_type() const;template <typename _Tp> _Tp* target();template <typename _Tp> const _Tp* target() const;#endif // _LIBCPP_NO_RTTI};template<class _Rp>function<_Rp()>::function(const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp>template<class _Alloc>function<_Rp()>::function(allocator_arg_t, const _Alloc&, const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp>template <class _Fp>function<_Rp()>::function(_Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){if (__function::__not_null(__f)){typedef __function::__func<_Fp, allocator<_Fp>, _Rp()> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f);}else{typedef allocator<_FF> _Ap;_Ap __a;typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, allocator<_Fp>(__a));__f_ = __hold.release();}}}template<class _Rp>template <class _Fp, class _Alloc>function<_Rp()>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){typedef allocator_traits<_Alloc> __alloc_traits;if (__function::__not_null(__f)){typedef __function::__func<_Fp, _Alloc, _Rp()> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f, __a0);}else{typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;_Ap __a(__a0);typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, _Alloc(__a));__f_ = __hold.release();}}}template<class _Rp>function<_Rp()>&function<_Rp()>::operator=(const function& __f){function(__f).swap(*this);return *this;}template<class _Rp>function<_Rp()>&function<_Rp()>::operator=(nullptr_t){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();__f_ = 0;return *this;}template<class _Rp>template <class _Fp>typename enable_if<!is_integral<_Fp>::value,function<_Rp()>&>::typefunction<_Rp()>::operator=(_Fp __f){function(_VSTD::move(__f)).swap(*this);return *this;}template<class _Rp>function<_Rp()>::~function(){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();}template<class _Rp>voidfunction<_Rp()>::swap(function& __f){if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_){typename aligned_storage<sizeof(__buf_)>::type __tempbuf;__base* __t = (__base*)&__tempbuf;__f_->__clone(__t);__f_->destroy();__f_ = 0;__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = 0;__f_ = (__base*)&__buf_;__t->__clone((__base*)&__f.__buf_);__t->destroy();__f.__f_ = (__base*)&__f.__buf_;}else if (__f_ == (__base*)&__buf_){__f_->__clone((__base*)&__f.__buf_);__f_->destroy();__f_ = __f.__f_;__f.__f_ = (__base*)&__f.__buf_;}else if (__f.__f_ == (__base*)&__f.__buf_){__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = __f_;__f_ = (__base*)&__buf_;}else_VSTD::swap(__f_, __f.__f_);}template<class _Rp>_Rpfunction<_Rp()>::operator()() const{#ifndef _LIBCPP_NO_EXCEPTIONSif (__f_ == 0)throw bad_function_call();#endif // _LIBCPP_NO_EXCEPTIONSreturn (*__f_)();}#ifndef _LIBCPP_NO_RTTItemplate<class _Rp>const std::type_info&function<_Rp()>::target_type() const{if (__f_ == 0)return typeid(void);return __f_->target_type();}template<class _Rp>template <typename _Tp>_Tp*function<_Rp()>::target(){if (__f_ == 0)return (_Tp*)0;return (_Tp*)__f_->target(typeid(_Tp));}template<class _Rp>template <typename _Tp>const _Tp*function<_Rp()>::target() const{if (__f_ == 0)return (const _Tp*)0;return (const _Tp*)__f_->target(typeid(_Tp));}#endif // _LIBCPP_NO_RTTItemplate<class _Rp, class _A0>class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_A0)>: public unary_function<_A0, _Rp>{typedef __function::__base<_Rp(_A0)> __base;aligned_storage<3*sizeof(void*)>::type __buf_;__base* __f_;public:typedef _Rp result_type;// 20.7.16.2.1, construct/copy/destroy:_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}function(const function&);template<class _Fp>function(_Fp,typename enable_if<!is_integral<_Fp>::value>::type* = 0);template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&) : __f_(0) {}template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}template<class _Alloc>function(allocator_arg_t, const _Alloc&, const function&);template<class _Fp, class _Alloc>function(allocator_arg_t, const _Alloc& __a, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type* = 0);function& operator=(const function&);function& operator=(nullptr_t);template<class _Fp>typename enable_if<!is_integral<_Fp>::value,function&>::typeoperator=(_Fp);~function();// 20.7.16.2.2, function modifiers:void swap(function&);template<class _Fp, class _Alloc>_LIBCPP_INLINE_VISIBILITYvoid assign(_Fp __f, const _Alloc& __a){function(allocator_arg, __a, __f).swap(*this);}// 20.7.16.2.3, function capacity:_LIBCPP_INLINE_VISIBILITY operator bool() const {return __f_;}private:// deleted overloads close possible hole in the type systemtemplate<class _R2, class _B0>bool operator==(const function<_R2(_B0)>&) const;// = delete;template<class _R2, class _B0>bool operator!=(const function<_R2(_B0)>&) const;// = delete;public:// 20.7.16.2.4, function invocation:_Rp operator()(_A0) const;#ifndef _LIBCPP_NO_RTTI// 20.7.16.2.5, function target access:const std::type_info& target_type() const;template <typename _Tp> _Tp* target();template <typename _Tp> const _Tp* target() const;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0>function<_Rp(_A0)>::function(const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0>template<class _Alloc>function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc&, const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0>template <class _Fp>function<_Rp(_A0)>::function(_Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){if (__function::__not_null(__f)){typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f);}else{typedef allocator<_FF> _Ap;_Ap __a;typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, allocator<_Fp>(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0>template <class _Fp, class _Alloc>function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){typedef allocator_traits<_Alloc> __alloc_traits;if (__function::__not_null(__f)){typedef __function::__func<_Fp, _Alloc, _Rp(_A0)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f, __a0);}else{typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;_Ap __a(__a0);typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, _Alloc(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0>function<_Rp(_A0)>&function<_Rp(_A0)>::operator=(const function& __f){function(__f).swap(*this);return *this;}template<class _Rp, class _A0>function<_Rp(_A0)>&function<_Rp(_A0)>::operator=(nullptr_t){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();__f_ = 0;return *this;}template<class _Rp, class _A0>template <class _Fp>typename enable_if<!is_integral<_Fp>::value,function<_Rp(_A0)>&>::typefunction<_Rp(_A0)>::operator=(_Fp __f){function(_VSTD::move(__f)).swap(*this);return *this;}template<class _Rp, class _A0>function<_Rp(_A0)>::~function(){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();}template<class _Rp, class _A0>voidfunction<_Rp(_A0)>::swap(function& __f){if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_){typename aligned_storage<sizeof(__buf_)>::type __tempbuf;__base* __t = (__base*)&__tempbuf;__f_->__clone(__t);__f_->destroy();__f_ = 0;__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = 0;__f_ = (__base*)&__buf_;__t->__clone((__base*)&__f.__buf_);__t->destroy();__f.__f_ = (__base*)&__f.__buf_;}else if (__f_ == (__base*)&__buf_){__f_->__clone((__base*)&__f.__buf_);__f_->destroy();__f_ = __f.__f_;__f.__f_ = (__base*)&__f.__buf_;}else if (__f.__f_ == (__base*)&__f.__buf_){__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = __f_;__f_ = (__base*)&__buf_;}else_VSTD::swap(__f_, __f.__f_);}template<class _Rp, class _A0>_Rpfunction<_Rp(_A0)>::operator()(_A0 __a0) const{#ifndef _LIBCPP_NO_EXCEPTIONSif (__f_ == 0)throw bad_function_call();#endif // _LIBCPP_NO_EXCEPTIONSreturn (*__f_)(__a0);}#ifndef _LIBCPP_NO_RTTItemplate<class _Rp, class _A0>const std::type_info&function<_Rp(_A0)>::target_type() const{if (__f_ == 0)return typeid(void);return __f_->target_type();}template<class _Rp, class _A0>template <typename _Tp>_Tp*function<_Rp(_A0)>::target(){if (__f_ == 0)return (_Tp*)0;return (_Tp*)__f_->target(typeid(_Tp));}template<class _Rp, class _A0>template <typename _Tp>const _Tp*function<_Rp(_A0)>::target() const{if (__f_ == 0)return (const _Tp*)0;return (const _Tp*)__f_->target(typeid(_Tp));}#endif // _LIBCPP_NO_RTTItemplate<class _Rp, class _A0, class _A1>class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_A0, _A1)>: public binary_function<_A0, _A1, _Rp>{typedef __function::__base<_Rp(_A0, _A1)> __base;aligned_storage<3*sizeof(void*)>::type __buf_;__base* __f_;public:typedef _Rp result_type;// 20.7.16.2.1, construct/copy/destroy:_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}function(const function&);template<class _Fp>function(_Fp,typename enable_if<!is_integral<_Fp>::value>::type* = 0);template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&) : __f_(0) {}template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}template<class _Alloc>function(allocator_arg_t, const _Alloc&, const function&);template<class _Fp, class _Alloc>function(allocator_arg_t, const _Alloc& __a, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type* = 0);function& operator=(const function&);function& operator=(nullptr_t);template<class _Fp>typename enable_if<!is_integral<_Fp>::value,function&>::typeoperator=(_Fp);~function();// 20.7.16.2.2, function modifiers:void swap(function&);template<class _Fp, class _Alloc>_LIBCPP_INLINE_VISIBILITYvoid assign(_Fp __f, const _Alloc& __a){function(allocator_arg, __a, __f).swap(*this);}// 20.7.16.2.3, function capacity:operator bool() const {return __f_;}private:// deleted overloads close possible hole in the type systemtemplate<class _R2, class _B0, class _B1>bool operator==(const function<_R2(_B0, _B1)>&) const;// = delete;template<class _R2, class _B0, class _B1>bool operator!=(const function<_R2(_B0, _B1)>&) const;// = delete;public:// 20.7.16.2.4, function invocation:_Rp operator()(_A0, _A1) const;#ifndef _LIBCPP_NO_RTTI// 20.7.16.2.5, function target access:const std::type_info& target_type() const;template <typename _Tp> _Tp* target();template <typename _Tp> const _Tp* target() const;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0, class _A1>function<_Rp(_A0, _A1)>::function(const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0, class _A1>template<class _Alloc>function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc&, const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0, class _A1>template <class _Fp>function<_Rp(_A0, _A1)>::function(_Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){if (__function::__not_null(__f)){typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f);}else{typedef allocator<_FF> _Ap;_Ap __a;typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, allocator<_Fp>(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0, class _A1>template <class _Fp, class _Alloc>function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){typedef allocator_traits<_Alloc> __alloc_traits;if (__function::__not_null(__f)){typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f, __a0);}else{typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;_Ap __a(__a0);typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, _Alloc(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0, class _A1>function<_Rp(_A0, _A1)>&function<_Rp(_A0, _A1)>::operator=(const function& __f){function(__f).swap(*this);return *this;}template<class _Rp, class _A0, class _A1>function<_Rp(_A0, _A1)>&function<_Rp(_A0, _A1)>::operator=(nullptr_t){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();__f_ = 0;return *this;}template<class _Rp, class _A0, class _A1>template <class _Fp>typename enable_if<!is_integral<_Fp>::value,function<_Rp(_A0, _A1)>&>::typefunction<_Rp(_A0, _A1)>::operator=(_Fp __f){function(_VSTD::move(__f)).swap(*this);return *this;}template<class _Rp, class _A0, class _A1>function<_Rp(_A0, _A1)>::~function(){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();}template<class _Rp, class _A0, class _A1>voidfunction<_Rp(_A0, _A1)>::swap(function& __f){if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_){typename aligned_storage<sizeof(__buf_)>::type __tempbuf;__base* __t = (__base*)&__tempbuf;__f_->__clone(__t);__f_->destroy();__f_ = 0;__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = 0;__f_ = (__base*)&__buf_;__t->__clone((__base*)&__f.__buf_);__t->destroy();__f.__f_ = (__base*)&__f.__buf_;}else if (__f_ == (__base*)&__buf_){__f_->__clone((__base*)&__f.__buf_);__f_->destroy();__f_ = __f.__f_;__f.__f_ = (__base*)&__f.__buf_;}else if (__f.__f_ == (__base*)&__f.__buf_){__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = __f_;__f_ = (__base*)&__buf_;}else_VSTD::swap(__f_, __f.__f_);}template<class _Rp, class _A0, class _A1>_Rpfunction<_Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1) const{#ifndef _LIBCPP_NO_EXCEPTIONSif (__f_ == 0)throw bad_function_call();#endif // _LIBCPP_NO_EXCEPTIONSreturn (*__f_)(__a0, __a1);}#ifndef _LIBCPP_NO_RTTItemplate<class _Rp, class _A0, class _A1>const std::type_info&function<_Rp(_A0, _A1)>::target_type() const{if (__f_ == 0)return typeid(void);return __f_->target_type();}template<class _Rp, class _A0, class _A1>template <typename _Tp>_Tp*function<_Rp(_A0, _A1)>::target(){if (__f_ == 0)return (_Tp*)0;return (_Tp*)__f_->target(typeid(_Tp));}template<class _Rp, class _A0, class _A1>template <typename _Tp>const _Tp*function<_Rp(_A0, _A1)>::target() const{if (__f_ == 0)return (const _Tp*)0;return (const _Tp*)__f_->target(typeid(_Tp));}#endif // _LIBCPP_NO_RTTItemplate<class _Rp, class _A0, class _A1, class _A2>class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_A0, _A1, _A2)>{typedef __function::__base<_Rp(_A0, _A1, _A2)> __base;aligned_storage<3*sizeof(void*)>::type __buf_;__base* __f_;public:typedef _Rp result_type;// 20.7.16.2.1, construct/copy/destroy:_LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {}_LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {}function(const function&);template<class _Fp>function(_Fp,typename enable_if<!is_integral<_Fp>::value>::type* = 0);template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&) : __f_(0) {}template<class _Alloc>_LIBCPP_INLINE_VISIBILITYfunction(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {}template<class _Alloc>function(allocator_arg_t, const _Alloc&, const function&);template<class _Fp, class _Alloc>function(allocator_arg_t, const _Alloc& __a, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type* = 0);function& operator=(const function&);function& operator=(nullptr_t);template<class _Fp>typename enable_if<!is_integral<_Fp>::value,function&>::typeoperator=(_Fp);~function();// 20.7.16.2.2, function modifiers:void swap(function&);template<class _Fp, class _Alloc>_LIBCPP_INLINE_VISIBILITYvoid assign(_Fp __f, const _Alloc& __a){function(allocator_arg, __a, __f).swap(*this);}// 20.7.16.2.3, function capacity:_LIBCPP_INLINE_VISIBILITY operator bool() const {return __f_;}private:// deleted overloads close possible hole in the type systemtemplate<class _R2, class _B0, class _B1, class _B2>bool operator==(const function<_R2(_B0, _B1, _B2)>&) const;// = delete;template<class _R2, class _B0, class _B1, class _B2>bool operator!=(const function<_R2(_B0, _B1, _B2)>&) const;// = delete;public:// 20.7.16.2.4, function invocation:_Rp operator()(_A0, _A1, _A2) const;#ifndef _LIBCPP_NO_RTTI// 20.7.16.2.5, function target access:const std::type_info& target_type() const;template <typename _Tp> _Tp* target();template <typename _Tp> const _Tp* target() const;#endif // _LIBCPP_NO_RTTI};template<class _Rp, class _A0, class _A1, class _A2>function<_Rp(_A0, _A1, _A2)>::function(const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0, class _A1, class _A2>template<class _Alloc>function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc&,const function& __f){if (__f.__f_ == 0)__f_ = 0;else if (__f.__f_ == (const __base*)&__f.__buf_){__f_ = (__base*)&__buf_;__f.__f_->__clone(__f_);}else__f_ = __f.__f_->__clone();}template<class _Rp, class _A0, class _A1, class _A2>template <class _Fp>function<_Rp(_A0, _A1, _A2)>::function(_Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){if (__function::__not_null(__f)){typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1, _A2)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f);}else{typedef allocator<_FF> _Ap;_Ap __a;typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, allocator<_Fp>(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0, class _A1, class _A2>template <class _Fp, class _Alloc>function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f,typename enable_if<!is_integral<_Fp>::value>::type*): __f_(0){typedef allocator_traits<_Alloc> __alloc_traits;if (__function::__not_null(__f)){typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)> _FF;if (sizeof(_FF) <= sizeof(__buf_)){__f_ = (__base*)&__buf_;::new (__f_) _FF(__f, __a0);}else{typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap;_Ap __a(__a0);typedef __allocator_destructor<_Ap> _Dp;unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1));::new (__hold.get()) _FF(__f, _Alloc(__a));__f_ = __hold.release();}}}template<class _Rp, class _A0, class _A1, class _A2>function<_Rp(_A0, _A1, _A2)>&function<_Rp(_A0, _A1, _A2)>::operator=(const function& __f){function(__f).swap(*this);return *this;}template<class _Rp, class _A0, class _A1, class _A2>function<_Rp(_A0, _A1, _A2)>&function<_Rp(_A0, _A1, _A2)>::operator=(nullptr_t){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();__f_ = 0;return *this;}template<class _Rp, class _A0, class _A1, class _A2>template <class _Fp>typename enable_if<!is_integral<_Fp>::value,function<_Rp(_A0, _A1, _A2)>&>::typefunction<_Rp(_A0, _A1, _A2)>::operator=(_Fp __f){function(_VSTD::move(__f)).swap(*this);return *this;}template<class _Rp, class _A0, class _A1, class _A2>function<_Rp(_A0, _A1, _A2)>::~function(){if (__f_ == (__base*)&__buf_)__f_->destroy();else if (__f_)__f_->destroy_deallocate();}template<class _Rp, class _A0, class _A1, class _A2>voidfunction<_Rp(_A0, _A1, _A2)>::swap(function& __f){if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_){typename aligned_storage<sizeof(__buf_)>::type __tempbuf;__base* __t = (__base*)&__tempbuf;__f_->__clone(__t);__f_->destroy();__f_ = 0;__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = 0;__f_ = (__base*)&__buf_;__t->__clone((__base*)&__f.__buf_);__t->destroy();__f.__f_ = (__base*)&__f.__buf_;}else if (__f_ == (__base*)&__buf_){__f_->__clone((__base*)&__f.__buf_);__f_->destroy();__f_ = __f.__f_;__f.__f_ = (__base*)&__f.__buf_;}else if (__f.__f_ == (__base*)&__f.__buf_){__f.__f_->__clone((__base*)&__buf_);__f.__f_->destroy();__f.__f_ = __f_;__f_ = (__base*)&__buf_;}else_VSTD::swap(__f_, __f.__f_);}template<class _Rp, class _A0, class _A1, class _A2>_Rpfunction<_Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2) const{#ifndef _LIBCPP_NO_EXCEPTIONSif (__f_ == 0)throw bad_function_call();#endif // _LIBCPP_NO_EXCEPTIONSreturn (*__f_)(__a0, __a1, __a2);}#ifndef _LIBCPP_NO_RTTItemplate<class _Rp, class _A0, class _A1, class _A2>const std::type_info&function<_Rp(_A0, _A1, _A2)>::target_type() const{if (__f_ == 0)return typeid(void);return __f_->target_type();}template<class _Rp, class _A0, class _A1, class _A2>template <typename _Tp>_Tp*function<_Rp(_A0, _A1, _A2)>::target(){if (__f_ == 0)return (_Tp*)0;return (_Tp*)__f_->target(typeid(_Tp));}template<class _Rp, class _A0, class _A1, class _A2>template <typename _Tp>const _Tp*function<_Rp(_A0, _A1, _A2)>::target() const{if (__f_ == 0)return (const _Tp*)0;return (const _Tp*)__f_->target(typeid(_Tp));}#endif // _LIBCPP_NO_RTTItemplate <class _Fp>inline _LIBCPP_INLINE_VISIBILITYbooloperator==(const function<_Fp>& __f, nullptr_t) {return !__f;}template <class _Fp>inline _LIBCPP_INLINE_VISIBILITYbooloperator==(nullptr_t, const function<_Fp>& __f) {return !__f;}template <class _Fp>inline _LIBCPP_INLINE_VISIBILITYbooloperator!=(const function<_Fp>& __f, nullptr_t) {return (bool)__f;}template <class _Fp>inline _LIBCPP_INLINE_VISIBILITYbooloperator!=(nullptr_t, const function<_Fp>& __f) {return (bool)__f;}template <class _Fp>inline _LIBCPP_INLINE_VISIBILITYvoidswap(function<_Fp>& __x, function<_Fp>& __y){return __x.swap(__y);}#endif // _LIBCPP_FUNCTIONAL_03