| // -*- C++ -*- |
| //===--------------------------- tuple ------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_TUPLE |
| #define _LIBCPP_TUPLE |
| |
| /* |
| tuple synopsis |
| |
| namespace std |
| { |
| |
| template <class... T> |
| class tuple { |
| public: |
| constexpr tuple(); |
| explicit tuple(const T&...); // constexpr in C++14 |
| template <class... U> |
| explicit tuple(U&&...); // constexpr in C++14 |
| tuple(const tuple&) = default; |
| tuple(tuple&&) = default; |
| template <class... U> |
| tuple(const tuple<U...>&); // constexpr in C++14 |
| template <class... U> |
| tuple(tuple<U...>&&); // constexpr in C++14 |
| template <class U1, class U2> |
| tuple(const pair<U1, U2>&); // iff sizeof...(T) == 2 // constexpr in C++14 |
| template <class U1, class U2> |
| tuple(pair<U1, U2>&&); // iff sizeof...(T) == 2 // constexpr in C++14 |
| |
| // allocator-extended constructors |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a); |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a, const T&...); |
| template <class Alloc, class... U> |
| tuple(allocator_arg_t, const Alloc& a, U&&...); |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a, const tuple&); |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a, tuple&&); |
| template <class Alloc, class... U> |
| tuple(allocator_arg_t, const Alloc& a, const tuple<U...>&); |
| template <class Alloc, class... U> |
| tuple(allocator_arg_t, const Alloc& a, tuple<U...>&&); |
| template <class Alloc, class U1, class U2> |
| tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&); |
| template <class Alloc, class U1, class U2> |
| tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&); |
| |
| tuple& operator=(const tuple&); |
| tuple& |
| operator=(tuple&&) noexcept(AND(is_nothrow_move_assignable<T>::value ...)); |
| template <class... U> |
| tuple& operator=(const tuple<U...>&); |
| template <class... U> |
| tuple& operator=(tuple<U...>&&); |
| template <class U1, class U2> |
| tuple& operator=(const pair<U1, U2>&); // iff sizeof...(T) == 2 |
| template <class U1, class U2> |
| tuple& operator=(pair<U1, U2>&&); //iffsizeof...(T) == 2 |
| |
| void swap(tuple&) noexcept(AND(swap(declval<T&>(), declval<T&>())...)); |
| }; |
| |
| const unspecified ignore; |
| |
| template <class... T> tuple<V...> make_tuple(T&&...); // constexpr in C++14 |
| template <class... T> tuple<ATypes...> forward_as_tuple(T&&...) noexcept; // constexpr in C++14 |
| template <class... T> tuple<T&...> tie(T&...) noexcept; // constexpr in C++14 |
| template <class... Tuples> tuple<CTypes...> tuple_cat(Tuples&&... tpls); // constexpr in C++14 |
| |
| // 20.4.1.4, tuple helper classes: |
| template <class T> class tuple_size; // undefined |
| template <class... T> class tuple_size<tuple<T...>>; |
| template <size_t I, class T> class tuple_element; // undefined |
| template <size_t I, class... T> class tuple_element<I, tuple<T...>>; |
| template <size_t I, class T> |
| using tuple_element_t = typename tuple_element <I, T>::type; // C++14 |
| |
| // 20.4.1.5, element access: |
| template <size_t I, class... T> |
| typename tuple_element<I, tuple<T...>>::type& |
| get(tuple<T...>&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| const typename tuple_element<I, tuple<T...>>::type& |
| get(const tuple<T...>&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| typename tuple_element<I, tuple<T...>>::type&& |
| get(tuple<T...>&&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| const typename tuple_element<I, tuple<T...>>::type&& |
| get(const tuple<T...>&&) noexcept; // constexpr in C++14 |
| |
| template <class T1, class... T> |
| constexpr T1& get(tuple<T...>&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr const T1& get(const tuple<T...>&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr T1&& get(tuple<T...>&&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr const T1&& get(const tuple<T...>&&) noexcept; // C++14 |
| |
| // 20.4.1.6, relational operators: |
| template<class... T, class... U> bool operator==(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator<(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator!=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator>(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator<=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator>=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| |
| template <class... Types, class Alloc> |
| struct uses_allocator<tuple<Types...>, Alloc>; |
| |
| template <class... Types> |
| void |
| swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(noexcept(x.swap(y))); |
| |
| } // std |
| |
| */ |
| |
| #include <__config> |
| #include <__tuple> |
| #include <cstddef> |
| #include <type_traits> |
| #include <__functional_base> |
| #include <utility> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #ifndef _LIBCPP_HAS_NO_VARIADICS |
| |
| // tuple_size |
| |
| template <class ..._Tp> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_size<tuple<_Tp...> > |
| : public integral_constant<size_t, sizeof...(_Tp)> |
| { |
| }; |
| |
| // tuple_element |
| |
| template <size_t _Ip, class ..._Tp> |
| class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, tuple<_Tp...> > |
| { |
| public: |
| typedef typename tuple_element<_Ip, __tuple_types<_Tp...> >::type type; |
| }; |
| |
| #if _LIBCPP_STD_VER > 11 |
| template <size_t _Ip, class ..._Tp> |
| using tuple_element_t = typename tuple_element <_Ip, _Tp...>::type; |
| #endif |
| |
| // __tuple_leaf |
| |
| template <size_t _Ip, class _Hp, |
| bool=is_empty<_Hp>::value && !__libcpp_is_final<_Hp>::value |
| > |
| class __tuple_leaf; |
| |
| template <size_t _Ip, class _Hp, bool _Ep> |
| inline _LIBCPP_INLINE_VISIBILITY |
| void swap(__tuple_leaf<_Ip, _Hp, _Ep>& __x, __tuple_leaf<_Ip, _Hp, _Ep>& __y) |
| _NOEXCEPT_(__is_nothrow_swappable<_Hp>::value) |
| { |
| swap(__x.get(), __y.get()); |
| } |
| |
| template <size_t _Ip, class _Hp, bool> |
| class __tuple_leaf |
| { |
| _Hp value; |
| |
| __tuple_leaf& operator=(const __tuple_leaf&); |
| public: |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf() |
| _NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) : value() |
| {static_assert(!is_reference<_Hp>::value, |
| "Attempted to default construct a reference element in a tuple");} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 0>, const _Alloc&) |
| : value() |
| {static_assert(!is_reference<_Hp>::value, |
| "Attempted to default construct a reference element in a tuple");} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a) |
| : value(allocator_arg_t(), __a) |
| {static_assert(!is_reference<_Hp>::value, |
| "Attempted to default construct a reference element in a tuple");} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a) |
| : value(__a) |
| {static_assert(!is_reference<_Hp>::value, |
| "Attempted to default construct a reference element in a tuple");} |
| |
| template <class _Tp, |
| class = typename enable_if< |
| __lazy_and< |
| __lazy_not<is_same<typename decay<_Tp>::type, __tuple_leaf>> |
| , is_constructible<_Hp, _Tp> |
| >::value |
| >::type |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_((is_nothrow_constructible<_Hp, _Tp>::value)) |
| : value(_VSTD::forward<_Tp>(__t)) |
| {static_assert(!is_reference<_Hp>::value || |
| (is_lvalue_reference<_Hp>::value && |
| (is_lvalue_reference<_Tp>::value || |
| is_same<typename remove_reference<_Tp>::type, |
| reference_wrapper< |
| typename remove_reference<_Hp>::type |
| > |
| >::value)) || |
| (is_rvalue_reference<_Hp>::value && |
| !is_lvalue_reference<_Tp>::value), |
| "Attempted to construct a reference element in a tuple with an rvalue");} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t) |
| : value(_VSTD::forward<_Tp>(__t)) |
| {static_assert(!is_lvalue_reference<_Hp>::value || |
| (is_lvalue_reference<_Hp>::value && |
| (is_lvalue_reference<_Tp>::value || |
| is_same<typename remove_reference<_Tp>::type, |
| reference_wrapper< |
| typename remove_reference<_Hp>::type |
| > |
| >::value)), |
| "Attempted to construct a reference element in a tuple with an rvalue");} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t) |
| : value(allocator_arg_t(), __a, _VSTD::forward<_Tp>(__t)) |
| {static_assert(!is_lvalue_reference<_Hp>::value || |
| (is_lvalue_reference<_Hp>::value && |
| (is_lvalue_reference<_Tp>::value || |
| is_same<typename remove_reference<_Tp>::type, |
| reference_wrapper< |
| typename remove_reference<_Hp>::type |
| > |
| >::value)), |
| "Attempted to construct a reference element in a tuple with an rvalue");} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t) |
| : value(_VSTD::forward<_Tp>(__t), __a) |
| {static_assert(!is_lvalue_reference<_Hp>::value || |
| (is_lvalue_reference<_Hp>::value && |
| (is_lvalue_reference<_Tp>::value || |
| is_same<typename remove_reference<_Tp>::type, |
| reference_wrapper< |
| typename remove_reference<_Hp>::type |
| > |
| >::value)), |
| "Attempted to construct a reference element in a tuple with an rvalue");} |
| |
| __tuple_leaf(const __tuple_leaf& __t) = default; |
| __tuple_leaf(__tuple_leaf&& __t) = default; |
| |
| template <class _Tp> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf& |
| operator=(_Tp&& __t) _NOEXCEPT_((is_nothrow_assignable<_Hp&, _Tp>::value)) |
| { |
| value = _VSTD::forward<_Tp>(__t); |
| return *this; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| int swap(__tuple_leaf& __t) _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value) |
| { |
| _VSTD::swap(*this, __t); |
| return 0; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 _Hp& get() _NOEXCEPT {return value;} |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const _Hp& get() const _NOEXCEPT {return value;} |
| }; |
| |
| template <size_t _Ip, class _Hp> |
| class __tuple_leaf<_Ip, _Hp, true> |
| : private _Hp |
| { |
| |
| __tuple_leaf& operator=(const __tuple_leaf&); |
| public: |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf() |
| _NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) {} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 0>, const _Alloc&) {} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a) |
| : _Hp(allocator_arg_t(), __a) {} |
| |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a) |
| : _Hp(__a) {} |
| |
| template <class _Tp, |
| class = typename enable_if< |
| __lazy_and< |
| __lazy_not<is_same<typename decay<_Tp>::type, __tuple_leaf>> |
| , is_constructible<_Hp, _Tp> |
| >::value |
| >::type |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_((is_nothrow_constructible<_Hp, _Tp>::value)) |
| : _Hp(_VSTD::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t) |
| : _Hp(_VSTD::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t) |
| : _Hp(allocator_arg_t(), __a, _VSTD::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t) |
| : _Hp(_VSTD::forward<_Tp>(__t), __a) {} |
| |
| __tuple_leaf(__tuple_leaf const &) = default; |
| __tuple_leaf(__tuple_leaf &&) = default; |
| |
| template <class _Tp> |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_leaf& |
| operator=(_Tp&& __t) _NOEXCEPT_((is_nothrow_assignable<_Hp&, _Tp>::value)) |
| { |
| _Hp::operator=(_VSTD::forward<_Tp>(__t)); |
| return *this; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| int |
| swap(__tuple_leaf& __t) _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value) |
| { |
| _VSTD::swap(*this, __t); |
| return 0; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 _Hp& get() _NOEXCEPT {return static_cast<_Hp&>(*this);} |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const _Hp& get() const _NOEXCEPT {return static_cast<const _Hp&>(*this);} |
| }; |
| |
| template <class ..._Tp> |
| _LIBCPP_INLINE_VISIBILITY |
| void __swallow(_Tp&&...) _NOEXCEPT {} |
| |
| template <bool ..._Pred> |
| struct __all |
| : is_same<__all<_Pred...>, __all<(_Pred, true)...>> |
| { }; |
| |
| template <class ..._Tp> |
| struct __lazy_all : __all<_Tp::value...> {}; |
| |
| template <class _Tp> |
| struct __all_default_constructible; |
| |
| template <class ..._Tp> |
| struct __all_default_constructible<__tuple_types<_Tp...>> |
| : __all<is_default_constructible<_Tp>::value...> |
| { }; |
| |
| // __tuple_impl |
| |
| template<class _Indx, class ..._Tp> struct __tuple_impl; |
| |
| template<size_t ..._Indx, class ..._Tp> |
| struct __tuple_impl<__tuple_indices<_Indx...>, _Tp...> |
| : public __tuple_leaf<_Indx, _Tp>... |
| { |
| _LIBCPP_INLINE_VISIBILITY |
| _LIBCPP_CONSTEXPR __tuple_impl() |
| _NOEXCEPT_(__all<is_nothrow_default_constructible<_Tp>::value...>::value) {} |
| |
| template <size_t ..._Uf, class ..._Tf, |
| size_t ..._Ul, class ..._Tl, class ..._Up> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit |
| __tuple_impl(__tuple_indices<_Uf...>, __tuple_types<_Tf...>, |
| __tuple_indices<_Ul...>, __tuple_types<_Tl...>, |
| _Up&&... __u) |
| _NOEXCEPT_((__all<is_nothrow_constructible<_Tf, _Up>::value...>::value && |
| __all<is_nothrow_default_constructible<_Tl>::value...>::value)) : |
| __tuple_leaf<_Uf, _Tf>(_VSTD::forward<_Up>(__u))..., |
| __tuple_leaf<_Ul, _Tl>()... |
| {} |
| |
| template <class _Alloc, size_t ..._Uf, class ..._Tf, |
| size_t ..._Ul, class ..._Tl, class ..._Up> |
| _LIBCPP_INLINE_VISIBILITY |
| explicit |
| __tuple_impl(allocator_arg_t, const _Alloc& __a, |
| __tuple_indices<_Uf...>, __tuple_types<_Tf...>, |
| __tuple_indices<_Ul...>, __tuple_types<_Tl...>, |
| _Up&&... __u) : |
| __tuple_leaf<_Uf, _Tf>(__uses_alloc_ctor<_Tf, _Alloc, _Up>(), __a, |
| _VSTD::forward<_Up>(__u))..., |
| __tuple_leaf<_Ul, _Tl>(__uses_alloc_ctor<_Tl, _Alloc>(), __a)... |
| {} |
| |
| template <class _Tuple, |
| class = typename enable_if |
| < |
| __tuple_constructible<_Tuple, tuple<_Tp...> >::value |
| >::type |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| __tuple_impl(_Tuple&& __t) _NOEXCEPT_((__all<is_nothrow_constructible<_Tp, typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>::value...>::value)) |
| : __tuple_leaf<_Indx, _Tp>(_VSTD::forward<typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))... |
| {} |
| |
| template <class _Alloc, class _Tuple, |
| class = typename enable_if |
| < |
| __tuple_constructible<_Tuple, tuple<_Tp...> >::value |
| >::type |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_impl(allocator_arg_t, const _Alloc& __a, _Tuple&& __t) |
| : __tuple_leaf<_Indx, _Tp>(__uses_alloc_ctor<_Tp, _Alloc, typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>(), __a, |
| _VSTD::forward<typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))... |
| {} |
| |
| template <class _Tuple> |
| _LIBCPP_INLINE_VISIBILITY |
| typename enable_if |
| < |
| __tuple_assignable<_Tuple, tuple<_Tp...> >::value, |
| __tuple_impl& |
| >::type |
| operator=(_Tuple&& __t) _NOEXCEPT_((__all<is_nothrow_assignable<_Tp&, typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>::value...>::value)) |
| { |
| __swallow(__tuple_leaf<_Indx, _Tp>::operator=(_VSTD::forward<typename tuple_element<_Indx, |
| typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))...); |
| return *this; |
| } |
| |
| __tuple_impl(const __tuple_impl&) = default; |
| __tuple_impl(__tuple_impl&&) = default; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_impl& |
| operator=(const __tuple_impl& __t) _NOEXCEPT_((__all<is_nothrow_copy_assignable<_Tp>::value...>::value)) |
| { |
| __swallow(__tuple_leaf<_Indx, _Tp>::operator=(static_cast<const __tuple_leaf<_Indx, _Tp>&>(__t).get())...); |
| return *this; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| __tuple_impl& |
| operator=(__tuple_impl&& __t) _NOEXCEPT_((__all<is_nothrow_move_assignable<_Tp>::value...>::value)) |
| { |
| __swallow(__tuple_leaf<_Indx, _Tp>::operator=(_VSTD::forward<_Tp>(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t).get()))...); |
| return *this; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| void swap(__tuple_impl& __t) |
| _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) |
| { |
| __swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...); |
| } |
| }; |
| |
| template <bool _IsTuple, class _SizeTrait, size_t _Expected> |
| struct __tuple_like_with_size_imp : false_type {}; |
| |
| template <class _SizeTrait, size_t _Expected> |
| struct __tuple_like_with_size_imp<true, _SizeTrait, _Expected> |
| : integral_constant<bool, _SizeTrait::value == _Expected> {}; |
| |
| template <class _Tuple, size_t _ExpectedSize, |
| class _RawTuple = typename __uncvref<_Tuple>::type> |
| using __tuple_like_with_size = __tuple_like_with_size_imp< |
| __tuple_like<_RawTuple>::value, |
| tuple_size<_RawTuple>, _ExpectedSize |
| >; |
| |
| |
| struct _LIBCPP_TYPE_VIS __check_tuple_constructor_fail { |
| template <class ...> |
| static constexpr bool __enable_explicit() { return false; } |
| template <class ...> |
| static constexpr bool __enable_implicit() { return false; } |
| }; |
| |
| template <class ..._Tp> |
| class _LIBCPP_TYPE_VIS_ONLY tuple |
| { |
| typedef __tuple_impl<typename __make_tuple_indices<sizeof...(_Tp)>::type, _Tp...> base; |
| |
| base base_; |
| |
| template <class ..._Args> |
| struct _PackExpandsToThisTuple : false_type {}; |
| |
| template <class _Arg> |
| struct _PackExpandsToThisTuple<_Arg> |
| : is_same<typename __uncvref<_Arg>::type, tuple> {}; |
| |
| template <bool _MaybeEnable, class _Dummy = void> |
| struct _CheckArgsConstructor : __check_tuple_constructor_fail {}; |
| |
| template <class _Dummy> |
| struct _CheckArgsConstructor<true, _Dummy> |
| { |
| template <class ..._Args> |
| static constexpr bool __enable_explicit() { |
| return |
| __tuple_constructible< |
| tuple<_Args...>, |
| typename __make_tuple_types<tuple, |
| sizeof...(_Args) < sizeof...(_Tp) ? |
| sizeof...(_Args) : |
| sizeof...(_Tp)>::type |
| >::value && |
| !__tuple_convertible< |
| tuple<_Args...>, |
| typename __make_tuple_types<tuple, |
| sizeof...(_Args) < sizeof...(_Tp) ? |
| sizeof...(_Args) : |
| sizeof...(_Tp)>::type |
| >::value && |
| __all_default_constructible< |
| typename __make_tuple_types<tuple, sizeof...(_Tp), |
| sizeof...(_Args) < sizeof...(_Tp) ? |
| sizeof...(_Args) : |
| sizeof...(_Tp)>::type |
| >::value; |
| } |
| |
| template <class ..._Args> |
| static constexpr bool __enable_implicit() { |
| return |
| __tuple_convertible< |
| tuple<_Args...>, |
| typename __make_tuple_types<tuple, |
| sizeof...(_Args) < sizeof...(_Tp) ? |
| sizeof...(_Args) : |
| sizeof...(_Tp)>::type |
| >::value && |
| __all_default_constructible< |
| typename __make_tuple_types<tuple, sizeof...(_Tp), |
| sizeof...(_Args) < sizeof...(_Tp) ? |
| sizeof...(_Args) : |
| sizeof...(_Tp)>::type |
| >::value; |
| } |
| }; |
| |
| template <bool _MaybeEnable, |
| bool = sizeof...(_Tp) == 1, |
| class _Dummy = void> |
| struct _CheckTupleLikeConstructor : __check_tuple_constructor_fail {}; |
| |
| template <class _Dummy> |
| struct _CheckTupleLikeConstructor<true, false, _Dummy> |
| { |
| template <class _Tuple> |
| static constexpr bool __enable_implicit() { |
| return __tuple_convertible<_Tuple, tuple>::value; |
| } |
| |
| template <class _Tuple> |
| static constexpr bool __enable_explicit() { |
| return __tuple_constructible<_Tuple, tuple>::value |
| && !__tuple_convertible<_Tuple, tuple>::value; |
| } |
| }; |
| |
| template <class _Dummy> |
| struct _CheckTupleLikeConstructor<true, true, _Dummy> |
| { |
| // This trait is used to disable the tuple-like constructor when |
| // the UTypes... constructor should be selected instead. |
| // See LWG issue #2549. |
| template <class _Tuple> |
| using _PreferTupleLikeConstructor = __lazy_or< |
| // Don't attempt the two checks below if the tuple we are given |
| // has the same type as this tuple. |
| is_same<typename __uncvref<_Tuple>::type, tuple>, |
| __lazy_and< |
| __lazy_not<is_constructible<_Tp..., _Tuple>>, |
| __lazy_not<is_convertible<_Tuple, _Tp...>> |
| > |
| >; |
| |
| template <class _Tuple> |
| static constexpr bool __enable_implicit() { |
| return __lazy_and< |
| __tuple_convertible<_Tuple, tuple>, |
| _PreferTupleLikeConstructor<_Tuple> |
| >::value; |
| } |
| |
| template <class _Tuple> |
| static constexpr bool __enable_explicit() { |
| return __lazy_and< |
| __tuple_constructible<_Tuple, tuple>, |
| _PreferTupleLikeConstructor<_Tuple>, |
| __lazy_not<__tuple_convertible<_Tuple, tuple>> |
| >::value; |
| } |
| }; |
| |
| template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Jp, tuple<_Up...> >::type& get(tuple<_Up...>&) _NOEXCEPT; |
| template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const typename tuple_element<_Jp, tuple<_Up...> >::type& get(const tuple<_Up...>&) _NOEXCEPT; |
| template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Jp, tuple<_Up...> >::type&& get(tuple<_Up...>&&) _NOEXCEPT; |
| template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const typename tuple_element<_Jp, tuple<_Up...> >::type&& get(const tuple<_Up...>&&) _NOEXCEPT; |
| public: |
| |
| template <bool _Dummy = true, class = typename enable_if< |
| __all<__dependent_type<is_default_constructible<_Tp>, _Dummy>::value...>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| _LIBCPP_CONSTEXPR tuple() |
| _NOEXCEPT_(__all<is_nothrow_default_constructible<_Tp>::value...>::value) {} |
| |
| template <class _AllocArgT, class _Alloc, bool _Dummy = true, class = typename enable_if< |
| __lazy_and< |
| is_same<allocator_arg_t, _AllocArgT>, |
| __lazy_all<__dependent_type<is_default_constructible<_Tp>, _Dummy>...> |
| >::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(_AllocArgT, _Alloc const& __a) |
| : base_(allocator_arg_t(), __a, |
| __tuple_indices<>(), __tuple_types<>(), |
| typename __make_tuple_indices<sizeof...(_Tp), 0>::type(), |
| __tuple_types<_Tp...>()) {} |
| |
| template <bool _Dummy = true, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| _Dummy |
| >::template __enable_implicit<_Tp...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple(const _Tp& ... __t) _NOEXCEPT_((__all<is_nothrow_copy_constructible<_Tp>::value...>::value)) |
| : base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t... |
| ) {} |
| |
| template <bool _Dummy = true, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| _Dummy |
| >::template __enable_explicit<_Tp...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit tuple(const _Tp& ... __t) _NOEXCEPT_((__all<is_nothrow_copy_constructible<_Tp>::value...>::value)) |
| : base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t... |
| ) {} |
| |
| template <class _Alloc, bool _Dummy = true, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| _Dummy |
| >::template __enable_implicit<_Tp...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc& __a, const _Tp& ... __t) |
| : base_(allocator_arg_t(), __a, |
| typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t... |
| ) {} |
| |
| template <class _Alloc, bool _Dummy = true, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| _Dummy |
| >::template __enable_explicit<_Tp...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| explicit |
| tuple(allocator_arg_t, const _Alloc& __a, const _Tp& ... __t) |
| : base_(allocator_arg_t(), __a, |
| typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t... |
| ) {} |
| |
| template <class ..._Up, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| sizeof...(_Up) <= sizeof...(_Tp) |
| && !_PackExpandsToThisTuple<_Up...>::value |
| >::template __enable_implicit<_Up...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple(_Up&&... __u) |
| _NOEXCEPT_(( |
| is_nothrow_constructible<base, |
| typename __make_tuple_indices<sizeof...(_Up)>::type, |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type, |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type, |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type, |
| _Up... |
| >::value |
| )) |
| : base_(typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| _VSTD::forward<_Up>(__u)...) {} |
| |
| template <class ..._Up, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| sizeof...(_Up) <= sizeof...(_Tp) |
| && !_PackExpandsToThisTuple<_Up...>::value |
| >::template __enable_explicit<_Up...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit |
| tuple(_Up&&... __u) |
| _NOEXCEPT_(( |
| is_nothrow_constructible<base, |
| typename __make_tuple_indices<sizeof...(_Up)>::type, |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type, |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type, |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type, |
| _Up... |
| >::value |
| )) |
| : base_(typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| _VSTD::forward<_Up>(__u)...) {} |
| |
| template <class _Alloc, class ..._Up, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| sizeof...(_Up) == sizeof...(_Tp) && |
| !_PackExpandsToThisTuple<_Up...>::value |
| >::template __enable_implicit<_Up...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc& __a, _Up&&... __u) |
| : base_(allocator_arg_t(), __a, |
| typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| _VSTD::forward<_Up>(__u)...) {} |
| |
| template <class _Alloc, class ..._Up, |
| typename enable_if |
| < |
| _CheckArgsConstructor< |
| sizeof...(_Up) == sizeof...(_Tp) && |
| !_PackExpandsToThisTuple<_Up...>::value |
| >::template __enable_explicit<_Up...>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| explicit |
| tuple(allocator_arg_t, const _Alloc& __a, _Up&&... __u) |
| : base_(allocator_arg_t(), __a, |
| typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| _VSTD::forward<_Up>(__u)...) {} |
| |
| template <class _Tuple, |
| typename enable_if |
| < |
| _CheckTupleLikeConstructor< |
| __tuple_like_with_size<_Tuple, sizeof...(_Tp)>::value |
| && !_PackExpandsToThisTuple<_Tuple>::value |
| >::template __enable_implicit<_Tuple>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple(_Tuple&& __t) _NOEXCEPT_((is_nothrow_constructible<base, _Tuple>::value)) |
| : base_(_VSTD::forward<_Tuple>(__t)) {} |
| |
| template <class _Tuple, |
| typename enable_if |
| < |
| _CheckTupleLikeConstructor< |
| __tuple_like_with_size<_Tuple, sizeof...(_Tp)>::value |
| && !_PackExpandsToThisTuple<_Tuple>::value |
| >::template __enable_explicit<_Tuple>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| explicit |
| tuple(_Tuple&& __t) _NOEXCEPT_((is_nothrow_constructible<base, _Tuple>::value)) |
| : base_(_VSTD::forward<_Tuple>(__t)) {} |
| |
| template <class _Alloc, class _Tuple, |
| typename enable_if |
| < |
| _CheckTupleLikeConstructor< |
| __tuple_like_with_size<_Tuple, sizeof...(_Tp)>::value |
| >::template __enable_implicit<_Tuple>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc& __a, _Tuple&& __t) |
| : base_(allocator_arg_t(), __a, _VSTD::forward<_Tuple>(__t)) {} |
| |
| template <class _Alloc, class _Tuple, |
| typename enable_if |
| < |
| _CheckTupleLikeConstructor< |
| __tuple_like_with_size<_Tuple, sizeof...(_Tp)>::value |
| >::template __enable_explicit<_Tuple>(), |
| bool |
| >::type = false |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| explicit |
| tuple(allocator_arg_t, const _Alloc& __a, _Tuple&& __t) |
| : base_(allocator_arg_t(), __a, _VSTD::forward<_Tuple>(__t)) {} |
| |
| template <class _Tuple, |
| class = typename enable_if |
| < |
| __tuple_assignable<_Tuple, tuple>::value |
| >::type |
| > |
| _LIBCPP_INLINE_VISIBILITY |
| tuple& |
| operator=(_Tuple&& __t) _NOEXCEPT_((is_nothrow_assignable<base&, _Tuple>::value)) |
| { |
| base_.operator=(_VSTD::forward<_Tuple>(__t)); |
| return *this; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| void swap(tuple& __t) _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) |
| {base_.swap(__t.base_);} |
| }; |
| |
| template <> |
| class _LIBCPP_TYPE_VIS_ONLY tuple<> |
| { |
| public: |
| _LIBCPP_INLINE_VISIBILITY |
| _LIBCPP_CONSTEXPR tuple() _NOEXCEPT {} |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc&) _NOEXCEPT {} |
| template <class _Alloc> |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc&, const tuple&) _NOEXCEPT {} |
| template <class _Up> |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(array<_Up, 0>) _NOEXCEPT {} |
| template <class _Alloc, class _Up> |
| _LIBCPP_INLINE_VISIBILITY |
| tuple(allocator_arg_t, const _Alloc&, array<_Up, 0>) _NOEXCEPT {} |
| _LIBCPP_INLINE_VISIBILITY |
| void swap(tuple&) _NOEXCEPT {} |
| }; |
| |
| template <class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY |
| typename enable_if |
| < |
| __all<__is_swappable<_Tp>::value...>::value, |
| void |
| >::type |
| swap(tuple<_Tp...>& __t, tuple<_Tp...>& __u) |
| _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) |
| {__t.swap(__u);} |
| |
| // get |
| |
| template <size_t _Ip, class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Ip, tuple<_Tp...> >::type& |
| get(tuple<_Tp...>& __t) _NOEXCEPT |
| { |
| typedef typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<__tuple_leaf<_Ip, type>&>(__t.base_).get(); |
| } |
| |
| template <size_t _Ip, class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const typename tuple_element<_Ip, tuple<_Tp...> >::type& |
| get(const tuple<_Tp...>& __t) _NOEXCEPT |
| { |
| typedef typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<const __tuple_leaf<_Ip, type>&>(__t.base_).get(); |
| } |
| |
| template <size_t _Ip, class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename tuple_element<_Ip, tuple<_Tp...> >::type&& |
| get(tuple<_Tp...>&& __t) _NOEXCEPT |
| { |
| typedef typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<type&&>( |
| static_cast<__tuple_leaf<_Ip, type>&&>(__t.base_).get()); |
| } |
| |
| template <size_t _Ip, class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| const typename tuple_element<_Ip, tuple<_Tp...> >::type&& |
| get(const tuple<_Tp...>&& __t) _NOEXCEPT |
| { |
| typedef typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<const type&&>( |
| static_cast<const __tuple_leaf<_Ip, type>&&>(__t.base_).get()); |
| } |
| |
| #if _LIBCPP_STD_VER > 11 |
| // get by type |
| template <typename _T1, size_t _Idx, typename... _Args> |
| struct __find_exactly_one_t_helper; |
| |
| // -- find exactly one |
| template <typename _T1, size_t _Idx, typename... _Args> |
| struct __find_exactly_one_t_checker { |
| static constexpr size_t value = _Idx; |
| // Check the rest of the list to make sure there's only one |
| static_assert ( __find_exactly_one_t_helper<_T1, 0, _Args...>::value == -1, "type can only occur once in type list" ); |
| }; |
| |
| |
| template <typename _T1, size_t _Idx> |
| struct __find_exactly_one_t_helper <_T1, _Idx> { |
| static constexpr size_t value = -1; |
| }; |
| |
| template <typename _T1, size_t _Idx, typename _Head, typename... _Args> |
| struct __find_exactly_one_t_helper <_T1, _Idx, _Head, _Args...> { |
| static constexpr size_t value = |
| std::conditional< |
| std::is_same<_T1, _Head>::value, |
| __find_exactly_one_t_checker<_T1, _Idx, _Args...>, |
| __find_exactly_one_t_helper <_T1, _Idx+1, _Args...> |
| >::type::value; |
| }; |
| |
| template <typename _T1, typename... _Args> |
| struct __find_exactly_one_t { |
| static constexpr size_t value = __find_exactly_one_t_helper<_T1, 0, _Args...>::value; |
| static_assert ( value != -1, "type not found in type list" ); |
| }; |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1& get(tuple<_Args...>& __tup) noexcept |
| { |
| return _VSTD::get<__find_exactly_one_t<_T1, _Args...>::value>(__tup); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 const& get(tuple<_Args...> const& __tup) noexcept |
| { |
| return _VSTD::get<__find_exactly_one_t<_T1, _Args...>::value>(__tup); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1&& get(tuple<_Args...>&& __tup) noexcept |
| { |
| return _VSTD::get<__find_exactly_one_t<_T1, _Args...>::value>(_VSTD::move(__tup)); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_INLINE_VISIBILITY |
| constexpr _T1 const&& get(tuple<_Args...> const&& __tup) noexcept |
| { |
| return _VSTD::get<__find_exactly_one_t<_T1, _Args...>::value>(_VSTD::move(__tup)); |
| } |
| |
| #endif |
| |
| // tie |
| |
| template <class ..._Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple<_Tp&...> |
| tie(_Tp&... __t) _NOEXCEPT |
| { |
| return tuple<_Tp&...>(__t...); |
| } |
| |
| template <class _Up> |
| struct __ignore_t |
| { |
| template <class _Tp> |
| _LIBCPP_INLINE_VISIBILITY |
| const __ignore_t& operator=(_Tp&&) const {return *this;} |
| }; |
| |
| namespace { const __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); } |
| |
| template <class _Tp> |
| struct __make_tuple_return_impl |
| { |
| typedef _Tp type; |
| }; |
| |
| template <class _Tp> |
| struct __make_tuple_return_impl<reference_wrapper<_Tp> > |
| { |
| typedef _Tp& type; |
| }; |
| |
| template <class _Tp> |
| struct __make_tuple_return |
| { |
| typedef typename __make_tuple_return_impl<typename decay<_Tp>::type>::type type; |
| }; |
| |
| template <class... _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple<typename __make_tuple_return<_Tp>::type...> |
| make_tuple(_Tp&&... __t) |
| { |
| return tuple<typename __make_tuple_return<_Tp>::type...>(_VSTD::forward<_Tp>(__t)...); |
| } |
| |
| template <class... _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple<_Tp&&...> |
| forward_as_tuple(_Tp&&... __t) _NOEXCEPT |
| { |
| return tuple<_Tp&&...>(_VSTD::forward<_Tp>(__t)...); |
| } |
| |
| template <size_t _Ip> |
| struct __tuple_equal |
| { |
| template <class _Tp, class _Up> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool operator()(const _Tp& __x, const _Up& __y) |
| { |
| return __tuple_equal<_Ip - 1>()(__x, __y) && _VSTD::get<_Ip-1>(__x) == _VSTD::get<_Ip-1>(__y); |
| } |
| }; |
| |
| template <> |
| struct __tuple_equal<0> |
| { |
| template <class _Tp, class _Up> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool operator()(const _Tp&, const _Up&) |
| { |
| return true; |
| } |
| }; |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator==(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return __tuple_equal<sizeof...(_Tp)>()(__x, __y); |
| } |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator!=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return !(__x == __y); |
| } |
| |
| template <size_t _Ip> |
| struct __tuple_less |
| { |
| template <class _Tp, class _Up> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool operator()(const _Tp& __x, const _Up& __y) |
| { |
| const size_t __idx = tuple_size<_Tp>::value - _Ip; |
| if (_VSTD::get<__idx>(__x) < _VSTD::get<__idx>(__y)) |
| return true; |
| if (_VSTD::get<__idx>(__y) < _VSTD::get<__idx>(__x)) |
| return false; |
| return __tuple_less<_Ip-1>()(__x, __y); |
| } |
| }; |
| |
| template <> |
| struct __tuple_less<0> |
| { |
| template <class _Tp, class _Up> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool operator()(const _Tp&, const _Up&) |
| { |
| return false; |
| } |
| }; |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator<(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return __tuple_less<sizeof...(_Tp)>()(__x, __y); |
| } |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator>(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return __y < __x; |
| } |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator>=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return !(__x < __y); |
| } |
| |
| template <class ..._Tp, class ..._Up> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| bool |
| operator<=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) |
| { |
| return !(__y < __x); |
| } |
| |
| // tuple_cat |
| |
| template <class _Tp, class _Up> struct __tuple_cat_type; |
| |
| template <class ..._Ttypes, class ..._Utypes> |
| struct __tuple_cat_type<tuple<_Ttypes...>, __tuple_types<_Utypes...> > |
| { |
| typedef tuple<_Ttypes..., _Utypes...> type; |
| }; |
| |
| template <class _ResultTuple, bool _Is_Tuple0TupleLike, class ..._Tuples> |
| struct __tuple_cat_return_1 |
| { |
| }; |
| |
| template <class ..._Types, class _Tuple0> |
| struct __tuple_cat_return_1<tuple<_Types...>, true, _Tuple0> |
| { |
| typedef typename __tuple_cat_type<tuple<_Types...>, |
| typename __make_tuple_types<typename remove_reference<_Tuple0>::type>::type>::type |
| type; |
| }; |
| |
| template <class ..._Types, class _Tuple0, class _Tuple1, class ..._Tuples> |
| struct __tuple_cat_return_1<tuple<_Types...>, true, _Tuple0, _Tuple1, _Tuples...> |
| : public __tuple_cat_return_1< |
| typename __tuple_cat_type< |
| tuple<_Types...>, |
| typename __make_tuple_types<typename remove_reference<_Tuple0>::type>::type |
| >::type, |
| __tuple_like<typename remove_reference<_Tuple1>::type>::value, |
| _Tuple1, _Tuples...> |
| { |
| }; |
| |
| template <class ..._Tuples> struct __tuple_cat_return; |
| |
| template <class _Tuple0, class ..._Tuples> |
| struct __tuple_cat_return<_Tuple0, _Tuples...> |
| : public __tuple_cat_return_1<tuple<>, |
| __tuple_like<typename remove_reference<_Tuple0>::type>::value, _Tuple0, |
| _Tuples...> |
| { |
| }; |
| |
| template <> |
| struct __tuple_cat_return<> |
| { |
| typedef tuple<> type; |
| }; |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| tuple<> |
| tuple_cat() |
| { |
| return tuple<>(); |
| } |
| |
| template <class _Rp, class _Indices, class _Tuple0, class ..._Tuples> |
| struct __tuple_cat_return_ref_imp; |
| |
| template <class ..._Types, size_t ..._I0, class _Tuple0> |
| struct __tuple_cat_return_ref_imp<tuple<_Types...>, __tuple_indices<_I0...>, _Tuple0> |
| { |
| typedef typename remove_reference<_Tuple0>::type _T0; |
| typedef tuple<_Types..., typename __apply_cv<_Tuple0, |
| typename tuple_element<_I0, _T0>::type>::type&&...> type; |
| }; |
| |
| template <class ..._Types, size_t ..._I0, class _Tuple0, class _Tuple1, class ..._Tuples> |
| struct __tuple_cat_return_ref_imp<tuple<_Types...>, __tuple_indices<_I0...>, |
| _Tuple0, _Tuple1, _Tuples...> |
| : public __tuple_cat_return_ref_imp< |
| tuple<_Types..., typename __apply_cv<_Tuple0, |
| typename tuple_element<_I0, |
| typename remove_reference<_Tuple0>::type>::type>::type&&...>, |
| typename __make_tuple_indices<tuple_size<typename |
| remove_reference<_Tuple1>::type>::value>::type, |
| _Tuple1, _Tuples...> |
| { |
| }; |
| |
| template <class _Tuple0, class ..._Tuples> |
| struct __tuple_cat_return_ref |
| : public __tuple_cat_return_ref_imp<tuple<>, |
| typename __make_tuple_indices< |
| tuple_size<typename remove_reference<_Tuple0>::type>::value |
| >::type, _Tuple0, _Tuples...> |
| { |
| }; |
| |
| template <class _Types, class _I0, class _J0> |
| struct __tuple_cat; |
| |
| template <class ..._Types, size_t ..._I0, size_t ..._J0> |
| struct __tuple_cat<tuple<_Types...>, __tuple_indices<_I0...>, __tuple_indices<_J0...> > |
| { |
| template <class _Tuple0> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&>::type |
| operator()(tuple<_Types...> __t, _Tuple0&& __t0) |
| { |
| return forward_as_tuple(_VSTD::forward<_Types>(_VSTD::get<_I0>(__t))..., |
| _VSTD::get<_J0>(_VSTD::forward<_Tuple0>(__t0))...); |
| } |
| |
| template <class _Tuple0, class _Tuple1, class ..._Tuples> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&, _Tuple1&&, _Tuples&&...>::type |
| operator()(tuple<_Types...> __t, _Tuple0&& __t0, _Tuple1&& __t1, _Tuples&& ...__tpls) |
| { |
| typedef typename remove_reference<_Tuple0>::type _T0; |
| typedef typename remove_reference<_Tuple1>::type _T1; |
| return __tuple_cat< |
| tuple<_Types..., typename __apply_cv<_Tuple0, typename tuple_element<_J0, _T0>::type>::type&&...>, |
| typename __make_tuple_indices<sizeof ...(_Types) + tuple_size<_T0>::value>::type, |
| typename __make_tuple_indices<tuple_size<_T1>::value>::type>() |
| (forward_as_tuple( |
| _VSTD::forward<_Types>(_VSTD::get<_I0>(__t))..., |
| _VSTD::get<_J0>(_VSTD::forward<_Tuple0>(__t0))... |
| ), |
| _VSTD::forward<_Tuple1>(__t1), |
| _VSTD::forward<_Tuples>(__tpls)...); |
| } |
| }; |
| |
| template <class _Tuple0, class... _Tuples> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename __tuple_cat_return<_Tuple0, _Tuples...>::type |
| tuple_cat(_Tuple0&& __t0, _Tuples&&... __tpls) |
| { |
| typedef typename remove_reference<_Tuple0>::type _T0; |
| return __tuple_cat<tuple<>, __tuple_indices<>, |
| typename __make_tuple_indices<tuple_size<_T0>::value>::type>() |
| (tuple<>(), _VSTD::forward<_Tuple0>(__t0), |
| _VSTD::forward<_Tuples>(__tpls)...); |
| } |
| |
| template <class ..._Tp, class _Alloc> |
| struct _LIBCPP_TYPE_VIS_ONLY uses_allocator<tuple<_Tp...>, _Alloc> |
| : true_type {}; |
| |
| template <class _T1, class _T2> |
| template <class... _Args1, class... _Args2, size_t ..._I1, size_t ..._I2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| pair<_T1, _T2>::pair(piecewise_construct_t, |
| tuple<_Args1...>& __first_args, tuple<_Args2...>& __second_args, |
| __tuple_indices<_I1...>, __tuple_indices<_I2...>) |
| : first(_VSTD::forward<_Args1>(_VSTD::get<_I1>( __first_args))...), |
| second(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) |
| { |
| } |
| |
| #endif // _LIBCPP_HAS_NO_VARIADICS |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_TUPLE |
