| // -*- C++ -*- |
| //===-------------------------- utility -----------------------------------===// |
| // |
| // 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_UTILITY |
| #define _LIBCPP_UTILITY |
| |
| /* |
| utility synopsis |
| |
| namespace std |
| { |
| |
| template <class T> |
| void |
| swap(T& a, T& b); |
| |
| namespace rel_ops |
| { |
| template<class T> bool operator!=(const T&, const T&); |
| template<class T> bool operator> (const T&, const T&); |
| template<class T> bool operator<=(const T&, const T&); |
| template<class T> bool operator>=(const T&, const T&); |
| } |
| |
| template<class T> |
| void |
| swap(T& a, T& b) noexcept(is_nothrow_move_constructible<T>::value && |
| is_nothrow_move_assignable<T>::value); |
| |
| template <class T, size_t N> |
| void |
| swap(T (&a)[N], T (&b)[N]) noexcept(noexcept(swap(*a, *b))); |
| |
| template <class T> T&& forward(typename remove_reference<T>::type& t) noexcept; // constexpr in C++14 |
| template <class T> T&& forward(typename remove_reference<T>::type&& t) noexcept; // constexpr in C++14 |
| |
| template <class T> typename remove_reference<T>::type&& move(T&&) noexcept; // constexpr in C++14 |
| |
| template <class T> |
| typename conditional |
| < |
| !is_nothrow_move_constructible<T>::value && is_copy_constructible<T>::value, |
| const T&, |
| T&& |
| >::type |
| move_if_noexcept(T& x) noexcept; // constexpr in C++14 |
| |
| template <class T> typename add_rvalue_reference<T>::type declval() noexcept; |
| |
| template <class T1, class T2> |
| struct pair |
| { |
| typedef T1 first_type; |
| typedef T2 second_type; |
| |
| T1 first; |
| T2 second; |
| |
| pair(const pair&) = default; |
| pair(pair&&) = default; |
| constexpr pair(); |
| pair(const T1& x, const T2& y); // constexpr in C++14 |
| template <class U, class V> pair(U&& x, V&& y); // constexpr in C++14 |
| template <class U, class V> pair(const pair<U, V>& p); // constexpr in C++14 |
| template <class U, class V> pair(pair<U, V>&& p); // constexpr in C++14 |
| template <class... Args1, class... Args2> |
| pair(piecewise_construct_t, tuple<Args1...> first_args, |
| tuple<Args2...> second_args); |
| |
| template <class U, class V> pair& operator=(const pair<U, V>& p); |
| pair& operator=(pair&& p) noexcept(is_nothrow_move_assignable<T1>::value && |
| is_nothrow_move_assignable<T2>::value); |
| template <class U, class V> pair& operator=(pair<U, V>&& p); |
| |
| void swap(pair& p) noexcept(noexcept(swap(first, p.first)) && |
| noexcept(swap(second, p.second))); |
| }; |
| |
| template <class T1, class T2> bool operator==(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| template <class T1, class T2> bool operator!=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| template <class T1, class T2> bool operator< (const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| template <class T1, class T2> bool operator> (const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| template <class T1, class T2> bool operator>=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| template <class T1, class T2> bool operator<=(const pair<T1,T2>&, const pair<T1,T2>&); // constexpr in C++14 |
| |
| template <class T1, class T2> pair<V1, V2> make_pair(T1&&, T2&&); // constexpr in C++14 |
| template <class T1, class T2> |
| void |
| swap(pair<T1, T2>& x, pair<T1, T2>& y) noexcept(noexcept(x.swap(y))); |
| |
| struct piecewise_construct_t { }; |
| constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t(); |
| |
| template <class T> class tuple_size; |
| template <size_t I, class T> class tuple_element; |
| |
| template <class T1, class T2> struct tuple_size<std::pair<T1, T2> >; |
| template <class T1, class T2> struct tuple_element<0, std::pair<T1, T2> >; |
| template <class T1, class T2> struct tuple_element<1, std::pair<T1, T2> >; |
| |
| template<size_t I, class T1, class T2> |
| typename tuple_element<I, std::pair<T1, T2> >::type& |
| get(std::pair<T1, T2>&) noexcept; // constexpr in C++14 |
| |
| template<size_t I, class T1, class T2> |
| const typename const tuple_element<I, std::pair<T1, T2> >::type& |
| get(const std::pair<T1, T2>&) noexcept; // constexpr in C++14 |
| |
| template<size_t I, class T1, class T2> |
| typename tuple_element<I, std::pair<T1, T2> >::type&& |
| get(std::pair<T1, T2>&&) noexcept; // constexpr in C++14 |
| |
| template<class T1, class T2> |
| constexpr T1& get(std::pair<T1, T2>&) noexcept; // C++14 |
| |
| template<size_t I, class T1, class T2> |
| constexpr T1 const& get(std::pair<T1, T2> const &) noexcept; // C++14 |
| |
| template<size_t I, class T1, class T2> |
| constexpr T1&& get(std::pair<T1, T2>&&) noexcept; // C++14 |
| |
| // C++14 |
| |
| template<class T, T... I> |
| struct integer_sequence |
| { |
| typedef T value_type; |
| |
| static constexpr size_t size() noexcept; |
| }; |
| |
| template<size_t... I> |
| using index_sequence = integer_sequence<size_t, I...>; |
| |
| template<class T, T N> |
| using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>; |
| template<size_t N> |
| using make_index_sequence = make_integer_sequence<size_t, N>; |
| |
| template<class... T> |
| using index_sequence_for = make_index_sequence<sizeof...(T)>; |
| |
| template<class T, class U=T> |
| T exchange(T& obj, U&& new_value); |
| } // std |
| |
| */ |
| |
| #include <__config> |
| #include <__tuple> |
| #include <type_traits> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| namespace rel_ops |
| { |
| |
| template<class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator!=(const _Tp& __x, const _Tp& __y) |
| { |
| return !(__x == __y); |
| } |
| |
| template<class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator> (const _Tp& __x, const _Tp& __y) |
| { |
| return __y < __x; |
| } |
| |
| template<class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator<=(const _Tp& __x, const _Tp& __y) |
| { |
| return !(__y < __x); |
| } |
| |
| template<class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator>=(const _Tp& __x, const _Tp& __y) |
| { |
| return !(__x < __y); |
| } |
| |
| } // rel_ops |
| |
| // swap_ranges |
| |
| template <class _ForwardIterator1, class _ForwardIterator2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| _ForwardIterator2 |
| swap_ranges(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) |
| { |
| for(; __first1 != __last1; ++__first1, ++__first2) |
| swap(*__first1, *__first2); |
| return __first2; |
| } |
| |
| template<class _Tp, size_t _Np> |
| inline _LIBCPP_INLINE_VISIBILITY |
| void |
| swap(_Tp (&__a)[_Np], _Tp (&__b)[_Np]) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) |
| { |
| _VSTD::swap_ranges(__a, __a + _Np, __b); |
| } |
| |
| template <class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| typename conditional |
| < |
| !is_nothrow_move_constructible<_Tp>::value && is_copy_constructible<_Tp>::value, |
| const _Tp&, |
| _Tp&& |
| >::type |
| #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| const _Tp& |
| #endif |
| move_if_noexcept(_Tp& __x) _NOEXCEPT |
| { |
| return _VSTD::move(__x); |
| } |
| |
| struct _LIBCPP_TYPE_VIS_ONLY piecewise_construct_t { }; |
| #if defined(_LIBCPP_HAS_NO_CONSTEXPR) || defined(_LIBCPP_BUILDING_UTILITY) |
| extern const piecewise_construct_t piecewise_construct;// = piecewise_construct_t(); |
| #else |
| constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t(); |
| #endif |
| |
| template <class _T1, class _T2> |
| struct _LIBCPP_TYPE_VIS_ONLY pair |
| { |
| typedef _T1 first_type; |
| typedef _T2 second_type; |
| |
| _T1 first; |
| _T2 second; |
| |
| // pair(const pair&) = default; |
| // pair(pair&&) = default; |
| |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR pair() : first(), second() {} |
| |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair(const _T1& __x, const _T2& __y) |
| : first(__x), second(__y) {} |
| |
| template<class _U1, class _U2> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair(const pair<_U1, _U2>& __p |
| #ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE |
| ,typename enable_if<is_convertible<const _U1&, _T1>::value && |
| is_convertible<const _U2&, _T2>::value>::type* = 0 |
| #endif |
| ) |
| : first(__p.first), second(__p.second) {} |
| |
| #if !defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && _LIBCPP_TRIVIAL_PAIR_COPY_CTOR |
| _LIBCPP_INLINE_VISIBILITY |
| pair(const pair& __p) = default; |
| #elif !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) || !_LIBCPP_TRIVIAL_PAIR_COPY_CTOR |
| _LIBCPP_INLINE_VISIBILITY |
| pair(const pair& __p) |
| _NOEXCEPT_(is_nothrow_copy_constructible<first_type>::value && |
| is_nothrow_copy_constructible<second_type>::value) |
| : first(__p.first), |
| second(__p.second) |
| { |
| } |
| #endif |
| |
| _LIBCPP_INLINE_VISIBILITY |
| pair& operator=(const pair& __p) |
| _NOEXCEPT_(is_nothrow_copy_assignable<first_type>::value && |
| is_nothrow_copy_assignable<second_type>::value) |
| { |
| first = __p.first; |
| second = __p.second; |
| return *this; |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _U1, class _U2, |
| class = typename enable_if<is_convertible<_U1, first_type>::value && |
| is_convertible<_U2, second_type>::value>::type> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair(_U1&& __u1, _U2&& __u2) |
| : first(_VSTD::forward<_U1>(__u1)), |
| second(_VSTD::forward<_U2>(__u2)) |
| {} |
| |
| template<class _U1, class _U2> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair(pair<_U1, _U2>&& __p, |
| typename enable_if<is_convertible<_U1, _T1>::value && |
| is_convertible<_U2, _T2>::value>::type* = 0) |
| : first(_VSTD::forward<_U1>(__p.first)), |
| second(_VSTD::forward<_U2>(__p.second)) {} |
| |
| #ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS |
| _LIBCPP_INLINE_VISIBILITY |
| pair(pair&& __p) = default; |
| #else |
| _LIBCPP_INLINE_VISIBILITY |
| pair(pair&& __p) _NOEXCEPT_(is_nothrow_move_constructible<first_type>::value && |
| is_nothrow_move_constructible<second_type>::value) |
| : first(_VSTD::forward<first_type>(__p.first)), |
| second(_VSTD::forward<second_type>(__p.second)) |
| { |
| } |
| #endif |
| |
| _LIBCPP_INLINE_VISIBILITY |
| pair& |
| operator=(pair&& __p) _NOEXCEPT_(is_nothrow_move_assignable<first_type>::value && |
| is_nothrow_move_assignable<second_type>::value) |
| { |
| first = _VSTD::forward<first_type>(__p.first); |
| second = _VSTD::forward<second_type>(__p.second); |
| return *this; |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_VARIADICS |
| |
| template<class _Tuple, |
| class = typename enable_if<__tuple_convertible<_Tuple, pair>::value>::type> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair(_Tuple&& __p) |
| : first(_VSTD::forward<typename tuple_element<0, |
| typename __make_tuple_types<_Tuple>::type>::type>(get<0>(__p))), |
| second(_VSTD::forward<typename tuple_element<1, |
| typename __make_tuple_types<_Tuple>::type>::type>(get<1>(__p))) |
| {} |
| |
| |
| |
| template <class... _Args1, class... _Args2> |
| _LIBCPP_INLINE_VISIBILITY |
| pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, |
| tuple<_Args2...> __second_args) |
| : pair(__pc, __first_args, __second_args, |
| typename __make_tuple_indices<sizeof...(_Args1)>::type(), |
| typename __make_tuple_indices<sizeof...(_Args2) >::type()) |
| {} |
| |
| template <class _Tuple, |
| class = typename enable_if<__tuple_assignable<_Tuple, pair>::value>::type> |
| _LIBCPP_INLINE_VISIBILITY |
| pair& |
| operator=(_Tuple&& __p) |
| { |
| typedef typename __make_tuple_types<_Tuple>::type _TupleRef; |
| typedef typename tuple_element<0, _TupleRef>::type _U0; |
| typedef typename tuple_element<1, _TupleRef>::type _U1; |
| first = _VSTD::forward<_U0>(_VSTD::get<0>(__p)); |
| second = _VSTD::forward<_U1>(_VSTD::get<1>(__p)); |
| return *this; |
| } |
| |
| #endif // _LIBCPP_HAS_NO_VARIADICS |
| |
| #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| _LIBCPP_INLINE_VISIBILITY |
| void |
| swap(pair& __p) _NOEXCEPT_(__is_nothrow_swappable<first_type>::value && |
| __is_nothrow_swappable<second_type>::value) |
| { |
| _VSTD::iter_swap(&first, &__p.first); |
| _VSTD::iter_swap(&second, &__p.second); |
| } |
| private: |
| |
| #ifndef _LIBCPP_HAS_NO_VARIADICS |
| template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> |
| _LIBCPP_INLINE_VISIBILITY |
| pair(piecewise_construct_t, |
| tuple<_Args1...>& __first_args, tuple<_Args2...>& __second_args, |
| __tuple_indices<_I1...>, __tuple_indices<_I2...>); |
| #endif // _LIBCPP_HAS_NO_VARIADICS |
| }; |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator==(const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return __x.first == __y.first && __x.second == __y.second; |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator!=(const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return !(__x == __y); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator< (const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return __x.first < __y.first || (!(__y.first < __x.first) && __x.second < __y.second); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator> (const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return __y < __x; |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator>=(const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return !(__x < __y); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator<=(const pair<_T1,_T2>& __x, const pair<_T1,_T2>& __y) |
| { |
| return !(__y < __x); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| typename enable_if |
| < |
| __is_swappable<_T1>::value && |
| __is_swappable<_T2>::value, |
| void |
| >::type |
| swap(pair<_T1, _T2>& __x, pair<_T1, _T2>& __y) |
| _NOEXCEPT_((__is_nothrow_swappable<_T1>::value && |
| __is_nothrow_swappable<_T2>::value)) |
| { |
| __x.swap(__y); |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _Tp> class _LIBCPP_TYPE_VIS_ONLY reference_wrapper; |
| |
| template <class _Tp> |
| struct ___make_pair_return |
| { |
| typedef _Tp type; |
| }; |
| |
| template <class _Tp> |
| struct ___make_pair_return<reference_wrapper<_Tp>> |
| { |
| typedef _Tp& type; |
| }; |
| |
| template <class _Tp> |
| struct __make_pair_return |
| { |
| typedef typename ___make_pair_return<typename decay<_Tp>::type>::type type; |
| }; |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| pair<typename __make_pair_return<_T1>::type, typename __make_pair_return<_T2>::type> |
| make_pair(_T1&& __t1, _T2&& __t2) |
| { |
| return pair<typename __make_pair_return<_T1>::type, typename __make_pair_return<_T2>::type> |
| (_VSTD::forward<_T1>(__t1), _VSTD::forward<_T2>(__t2)); |
| } |
| |
| #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| pair<_T1,_T2> |
| make_pair(_T1 __x, _T2 __y) |
| { |
| return pair<_T1, _T2>(__x, __y); |
| } |
| |
| #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_size<pair<_T1, _T2> > |
| : public integral_constant<size_t, 2> {}; |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_size<const pair<_T1, _T2> > |
| : public integral_constant<size_t, 2> {}; |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_element<0, pair<_T1, _T2> > |
| { |
| public: |
| typedef _T1 type; |
| }; |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_element<1, pair<_T1, _T2> > |
| { |
| public: |
| typedef _T2 type; |
| }; |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_element<0, const pair<_T1, _T2> > |
| { |
| public: |
| typedef const _T1 type; |
| }; |
| |
| template <class _T1, class _T2> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_element<1, const pair<_T1, _T2> > |
| { |
| public: |
| typedef const _T2 type; |
| }; |
| |
| template <size_t _Ip> struct __get_pair; |
| |
| template <> |
| struct __get_pair<0> |
| { |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| _T1& |
| get(pair<_T1, _T2>& __p) _NOEXCEPT {return __p.first;} |
| |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const _T1& |
| get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.first;} |
| |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| _T1&& |
| get(pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<_T1>(__p.first);} |
| |
| #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| }; |
| |
| template <> |
| struct __get_pair<1> |
| { |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| _T2& |
| get(pair<_T1, _T2>& __p) _NOEXCEPT {return __p.second;} |
| |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const _T2& |
| get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.second;} |
| |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <class _T1, class _T2> |
| static |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| _T2&& |
| get(pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<_T2>(__p.second);} |
| |
| #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| }; |
| |
| template <size_t _Ip, class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Ip, pair<_T1, _T2> >::type& |
| get(pair<_T1, _T2>& __p) _NOEXCEPT |
| { |
| return __get_pair<_Ip>::get(__p); |
| } |
| |
| template <size_t _Ip, class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const typename tuple_element<_Ip, pair<_T1, _T2> >::type& |
| get(const pair<_T1, _T2>& __p) _NOEXCEPT |
| { |
| return __get_pair<_Ip>::get(__p); |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| template <size_t _Ip, class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Ip, pair<_T1, _T2> >::type&& |
| get(pair<_T1, _T2>&& __p) _NOEXCEPT |
| { |
| return __get_pair<_Ip>::get(_VSTD::move(__p)); |
| } |
| |
| #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| |
| #if _LIBCPP_STD_VER > 11 |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 & get(pair<_T1, _T2>& __p) _NOEXCEPT |
| { |
| return __get_pair<0>::get(__p); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 const & get(pair<_T1, _T2> const& __p) _NOEXCEPT |
| { |
| return __get_pair<0>::get(__p); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 && get(pair<_T1, _T2>&& __p) _NOEXCEPT |
| { |
| return __get_pair<0>::get(_VSTD::move(__p)); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 & get(pair<_T2, _T1>& __p) _NOEXCEPT |
| { |
| return __get_pair<1>::get(__p); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 const & get(pair<_T2, _T1> const& __p) _NOEXCEPT |
| { |
| return __get_pair<1>::get(__p); |
| } |
| |
| template <class _T1, class _T2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 && get(pair<_T2, _T1>&& __p) _NOEXCEPT |
| { |
| return __get_pair<1>::get(_VSTD::move(__p)); |
| } |
| |
| #endif |
| |
| #if _LIBCPP_STD_VER > 11 |
| |
| template<class _Tp, _Tp... _Ip> |
| struct _LIBCPP_TYPE_VIS_ONLY integer_sequence |
| { |
| typedef _Tp value_type; |
| static_assert( is_integral<_Tp>::value, |
| "std::integer_sequence can only be instantiated with an integral type" ); |
| static |
| _LIBCPP_INLINE_VISIBILITY |
| constexpr |
| size_t |
| size() noexcept { return sizeof...(_Ip); } |
| }; |
| |
| template<size_t... _Ip> |
| using index_sequence = integer_sequence<size_t, _Ip...>; |
| |
| namespace __detail { |
| |
| template<typename _Tp, size_t ..._Extra> struct __repeat; |
| template<typename _Tp, _Tp ..._Np, size_t ..._Extra> struct __repeat<integer_sequence<_Tp, _Np...>, _Extra...> { |
| typedef integer_sequence<_Tp, |
| _Np..., |
| sizeof...(_Np) + _Np..., |
| 2 * sizeof...(_Np) + _Np..., |
| 3 * sizeof...(_Np) + _Np..., |
| 4 * sizeof...(_Np) + _Np..., |
| 5 * sizeof...(_Np) + _Np..., |
| 6 * sizeof...(_Np) + _Np..., |
| 7 * sizeof...(_Np) + _Np..., |
| _Extra...> type; |
| }; |
| |
| template<size_t _Np> struct __parity; |
| template<size_t _Np> struct __make : __parity<_Np % 8>::template __pmake<_Np> {}; |
| |
| template<> struct __make<0> { typedef integer_sequence<size_t> type; }; |
| template<> struct __make<1> { typedef integer_sequence<size_t, 0> type; }; |
| template<> struct __make<2> { typedef integer_sequence<size_t, 0, 1> type; }; |
| template<> struct __make<3> { typedef integer_sequence<size_t, 0, 1, 2> type; }; |
| template<> struct __make<4> { typedef integer_sequence<size_t, 0, 1, 2, 3> type; }; |
| template<> struct __make<5> { typedef integer_sequence<size_t, 0, 1, 2, 3, 4> type; }; |
| template<> struct __make<6> { typedef integer_sequence<size_t, 0, 1, 2, 3, 4, 5> type; }; |
| template<> struct __make<7> { typedef integer_sequence<size_t, 0, 1, 2, 3, 4, 5, 6> type; }; |
| |
| template<> struct __parity<0> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type> {}; }; |
| template<> struct __parity<1> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 1> {}; }; |
| template<> struct __parity<2> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 2, _Np - 1> {}; }; |
| template<> struct __parity<3> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 3, _Np - 2, _Np - 1> {}; }; |
| template<> struct __parity<4> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 4, _Np - 3, _Np - 2, _Np - 1> {}; }; |
| template<> struct __parity<5> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 5, _Np - 4, _Np - 3, _Np - 2, _Np - 1> {}; }; |
| template<> struct __parity<6> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 6, _Np - 5, _Np - 4, _Np - 3, _Np - 2, _Np - 1> {}; }; |
| template<> struct __parity<7> { template<size_t _Np> struct __pmake : __repeat<typename __make<_Np / 8>::type, _Np - 7, _Np - 6, _Np - 5, _Np - 4, _Np - 3, _Np - 2, _Np - 1> {}; }; |
| |
| template<typename _Tp, typename _Up> struct __convert { |
| template<typename> struct __result; |
| template<_Tp ..._Np> struct __result<integer_sequence<_Tp, _Np...> > { typedef integer_sequence<_Up, _Np...> type; }; |
| }; |
| template<typename _Tp> struct __convert<_Tp, _Tp> { template<typename _Up> struct __result { typedef _Up type; }; }; |
| |
| } |
| |
| template<typename _Tp, _Tp _Np> using __make_integer_sequence_unchecked = |
| typename __detail::__convert<size_t, _Tp>::template __result<typename __detail::__make<_Np>::type>::type; |
| |
| template <class _Tp, _Tp _Ep> |
| struct __make_integer_sequence |
| { |
| static_assert(is_integral<_Tp>::value, |
| "std::make_integer_sequence can only be instantiated with an integral type" ); |
| static_assert(0 <= _Ep, "std::make_integer_sequence input shall not be negative"); |
| typedef __make_integer_sequence_unchecked<_Tp, _Ep> type; |
| }; |
| |
| template<class _Tp, _Tp _Np> |
| using make_integer_sequence = typename __make_integer_sequence<_Tp, _Np>::type; |
| |
| template<size_t _Np> |
| using make_index_sequence = make_integer_sequence<size_t, _Np>; |
| |
| template<class... _Tp> |
| using index_sequence_for = make_index_sequence<sizeof...(_Tp)>; |
| |
| #endif // _LIBCPP_STD_VER > 11 |
| |
| #if _LIBCPP_STD_VER > 11 |
| template<class _T1, class _T2 = _T1> |
| inline _LIBCPP_INLINE_VISIBILITY |
| _T1 exchange(_T1& __obj, _T2 && __new_value) |
| { |
| _T1 __old_value = _VSTD::move(__obj); |
| __obj = _VSTD::forward<_T2>(__new_value); |
| return __old_value; |
| } |
| #endif // _LIBCPP_STD_VER > 11 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_UTILITY |
