forked from OSchip/llvm-project
806 lines
26 KiB
C++
806 lines
26 KiB
C++
// -*- C++ -*-
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//===--------------------------- tuple ------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_TUPLE
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#define _LIBCPP_TUPLE
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/*
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tuple synopsis
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namespace std
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{
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template <class... T>
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class tuple {
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public:
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constexpr tuple();
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explicit tuple(const T&...);
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template <class... U>
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explicit tuple(U&&...);
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tuple(const tuple&) = default;
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tuple(tuple&&);
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template <class... U>
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tuple(const tuple<U...>&);
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template <class... U>
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tuple(tuple<U...>&&);
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template <class U1, class U2>
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tuple(const pair<U1, U2>&); // iff sizeof...(T) == 2
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template <class U1, class U2>
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tuple(pair<U1, U2>&&); // iff sizeof...(T) == 2
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// allocator-extended constructors
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, const T&...);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, U&&...);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, const tuple&);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, tuple&&);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, const tuple<U...>&);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, tuple<U...>&&);
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template <class Alloc, class U1, class U2>
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tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&);
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template <class Alloc, class U1, class U2>
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tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&);
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tuple& operator=(const tuple&);
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tuple& operator=(tuple&&);
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template <class... U>
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tuple& operator=(const tuple<U...>&);
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template <class... U>
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tuple& operator=(tuple<U...>&&);
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template <class U1, class U2>
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tuple& operator=(const pair<U1, U2>&); // iff sizeof...(T) == 2
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template <class U1, class U2>
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tuple& operator=(pair<U1, U2>&&); //iffsizeof...(T) == 2
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void swap(tuple&);
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};
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const unspecified ignore;
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template <class... T> tuple<V...> make_tuple(T&&...);
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template <class... T> tuple<ATypes...> forward_as_tuple(T&&...);
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template <class... T> tuple<T&...> tie(T&...);
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template <class... T, class... U> tuple<T..., U...> tuple_cat(const tuple<T...>&, const tuple<U...>&);
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template <class... T, class... U> tuple<T..., U...> tuple_cat(tuple<T...>&&, const tuple<U...>&);
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template <class... T, class... U> tuple<T..., U...> tuple_cat(const tuple<T...>&, tuple<U...>&&);
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template <class... T, class... U> tuple<T..., U...> tuple_cat(tuple<T...>&&, tuple<U...>&&);
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// 20.4.1.4, tuple helper classes:
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template <class T> class tuple_size; // undefined
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template <class... T> class tuple_size<tuple<T...>>;
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template <intsize_t I, class T> class tuple_element; // undefined
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template <intsize_t I, class... T> class tuple_element<I, tuple<T...>>;
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// 20.4.1.5, element access:
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template <intsize_t I, class... T> typename tuple_element<I, tuple<T...>>::type& get(tuple<T...>&);
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template <intsize_t I, class... T> typename tuple_element<I, tuple<T...>>::type const& get(const tuple<T...>&);
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// 20.4.1.6, relational operators:
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template<class... T, class... U> bool operator==(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator<(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator!=(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator>(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator<=(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator>=(const tuple<T...>&, const tuple<U...>&);
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template <class... Types, class Alloc>
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struct uses_allocator<tuple<Types...>, Alloc>;
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template <class... Types>
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void swap(tuple<Types...>& x, tuple<Types...>& y);
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} // std
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*/
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#include <__config>
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#include <__tuple>
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#include <cstddef>
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#include <memory>
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#include <type_traits>
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#pragma GCC system_header
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_LIBCPP_BEGIN_NAMESPACE_STD
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#ifndef _LIBCPP_HAS_NO_VARIADICS
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// tuple_size
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template <class ..._Tp>
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class tuple_size<tuple<_Tp...>>
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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template <class ..._Tp>
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class tuple_size<const tuple<_Tp...>>
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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// tuple_element
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template <size_t _Ip, class ..._Tp>
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class tuple_element<_Ip, tuple<_Tp...>>
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{
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public:
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typedef typename tuple_element<_Ip, __tuple_types<_Tp...>>::type type;
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};
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template <size_t _Ip, class ..._Tp>
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class tuple_element<_Ip, const tuple<_Tp...>>
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{
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public:
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typedef const typename tuple_element<_Ip, __tuple_types<_Tp...>>::type type;
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};
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// __tuple_leaf
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template <size_t _Ip, class _Hp, bool=is_empty<_Hp>::value>
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class __tuple_leaf;
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template <size_t _Ip, class _Hp, bool _Ep>
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inline
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void swap(__tuple_leaf<_Ip, _Hp, _Ep>& __x, __tuple_leaf<_Ip, _Hp, _Ep>& __y)
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{
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swap(__x.get(), __y.get());
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}
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template <size_t _Ip, class _Hp, bool>
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class __tuple_leaf
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{
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_Hp value;
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__tuple_leaf& operator=(const __tuple_leaf&);
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public:
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_LIBCPP_INLINE_VISIBILITY __tuple_leaf() : value()
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 0>, const _Alloc&)
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: value()
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 1>, const _Alloc& __a)
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: value(allocator_arg_t(), __a)
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 2>, const _Alloc& __a)
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: value(__a)
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(_Tp&& __t)
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: value(_STD::forward<_Tp>(__t))
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t)
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: value(_STD::forward<_Tp>(__t))
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t)
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: value(allocator_arg_t(), __a, _STD::forward<_Tp>(__t))
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t)
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: value(_STD::forward<_Tp>(__t), __a)
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(const __tuple_leaf<_Ip, _Tp>& __t)
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: value(__t.get()) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf&
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operator=(_Tp&& __t)
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{
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value = _STD::forward<_Tp>(__t);
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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int swap(__tuple_leaf& __t)
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{
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_STD::swap(*this, __t);
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return 0;
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}
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_LIBCPP_INLINE_VISIBILITY _Hp& get() {return value;}
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_LIBCPP_INLINE_VISIBILITY const _Hp& get() const {return value;}
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};
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template <size_t _Ip, class _Hp>
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class __tuple_leaf<_Ip, _Hp, true>
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: private _Hp
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{
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__tuple_leaf& operator=(const __tuple_leaf&);
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public:
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_LIBCPP_INLINE_VISIBILITY __tuple_leaf() {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 0>, const _Alloc&) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 1>, const _Alloc& __a)
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: _Hp(allocator_arg_t(), __a) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 2>, const _Alloc& __a)
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: _Hp(__a) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(_Tp&& __t)
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: _Hp(_STD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t)
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: _Hp(_STD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t)
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: _Hp(allocator_arg_t(), __a, _STD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t)
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: _Hp(_STD::forward<_Tp>(__t), __a) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(const __tuple_leaf<_Ip, _Tp>& __t)
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: _Hp(__t.get()) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf&
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operator=(_Tp&& __t)
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{
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_Hp::operator=(_STD::forward<_Tp>(__t));
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY int swap(__tuple_leaf& __t)
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{
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_STD::swap(*this, __t);
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return 0;
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}
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_LIBCPP_INLINE_VISIBILITY _Hp& get() {return static_cast<_Hp&>(*this);}
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_LIBCPP_INLINE_VISIBILITY const _Hp& get() const {return static_cast<const _Hp&>(*this);}
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};
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template <class ..._Tp> void __swallow(_Tp&&...) {}
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// __tuple_impl
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template<class _Indx, class ..._Tp> struct __tuple_impl;
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template<size_t ..._Indx, class ..._Tp>
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struct __tuple_impl<__tuple_indices<_Indx...>, _Tp...>
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: public __tuple_leaf<_Indx, _Tp>...
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{
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template <size_t ..._Uf, class ..._Tf,
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size_t ..._Ul, class ..._Tl, class ..._Up>
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explicit
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__tuple_impl(__tuple_indices<_Uf...>, __tuple_types<_Tf...>,
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__tuple_indices<_Ul...>, __tuple_types<_Tl...>,
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_Up&&... __u) :
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__tuple_leaf<_Uf, _Tf>(_STD::forward<_Up>(__u))...,
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__tuple_leaf<_Ul, _Tl>()...
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{}
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template <class _Alloc, size_t ..._Uf, class ..._Tf,
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size_t ..._Ul, class ..._Tl, class ..._Up>
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explicit
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__tuple_impl(allocator_arg_t, const _Alloc& __a,
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__tuple_indices<_Uf...>, __tuple_types<_Tf...>,
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__tuple_indices<_Ul...>, __tuple_types<_Tl...>,
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_Up&&... __u) :
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__tuple_leaf<_Uf, _Tf>(__uses_alloc_ctor<_Tf, _Alloc, _Up>(), __a,
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_STD::forward<_Up>(__u))...,
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__tuple_leaf<_Ul, _Tl>(__uses_alloc_ctor<_Tl, _Alloc>(), __a)...
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{}
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template <class _Tuple,
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class = typename enable_if
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<
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__tuple_convertible<_Tuple, tuple<_Tp...>>::value
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>::type
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>
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__tuple_impl(_Tuple&& __t)
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: __tuple_leaf<_Indx, _Tp>(_STD::forward<typename tuple_element<_Indx,
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typename __make_tuple_types<_Tuple>::type>::type>(_STD::get<_Indx>(__t)))...
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{}
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template <class _Alloc, class _Tuple,
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class = typename enable_if
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<
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__tuple_convertible<_Tuple, tuple<_Tp...>>::value
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>::type
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>
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__tuple_impl(allocator_arg_t, const _Alloc& __a, _Tuple&& __t)
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: __tuple_leaf<_Indx, _Tp>(__uses_alloc_ctor<_Tp, _Alloc, typename tuple_element<_Indx,
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typename __make_tuple_types<_Tuple>::type>::type>(), __a,
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_STD::forward<typename tuple_element<_Indx,
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typename __make_tuple_types<_Tuple>::type>::type>(_STD::get<_Indx>(__t)))...
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{}
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template <class _Tuple>
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typename enable_if
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<
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__tuple_assignable<_Tuple, tuple<_Tp...>>::value,
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__tuple_impl&
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>::type
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operator=(_Tuple&& __t)
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{
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__swallow(__tuple_leaf<_Indx, _Tp>::operator=(_STD::forward<typename tuple_element<_Indx,
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typename __make_tuple_types<_Tuple>::type>::type>(_STD::get<_Indx>(__t)))...);
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return *this;
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}
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void swap(__tuple_impl& __t)
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{
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__swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...);
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}
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};
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template <class ..._Tp>
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class tuple
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{
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typedef __tuple_impl<typename __make_tuple_indices<sizeof...(_Tp)>::type, _Tp...> base;
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base base_;
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template <size_t _Jp, class ..._Up> friend
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typename tuple_element<_Jp, tuple<_Up...>>::type& get(tuple<_Up...>&);
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template <size_t _Jp, class ..._Up> friend
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const typename tuple_element<_Jp, tuple<_Up...>>::type& get(const tuple<_Up...>&);
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public:
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explicit tuple(const _Tp& ... __t)
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: base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(),
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typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(),
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typename __make_tuple_indices<0>::type(),
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typename __make_tuple_types<tuple, 0>::type(),
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__t...
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) {}
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template <class _Alloc>
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tuple(allocator_arg_t, const _Alloc& __a, const _Tp& ... __t)
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: base_(allocator_arg_t(), __a,
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typename __make_tuple_indices<sizeof...(_Tp)>::type(),
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typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(),
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typename __make_tuple_indices<0>::type(),
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typename __make_tuple_types<tuple, 0>::type(),
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__t...
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) {}
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template <class ..._Up,
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class = typename enable_if
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<
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sizeof...(_Up) <= sizeof...(_Tp) &&
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__tuple_convertible
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<
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tuple<_Up...>,
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typename __make_tuple_types<tuple,
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sizeof...(_Up) < sizeof...(_Tp) ?
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sizeof...(_Up) :
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sizeof...(_Tp)>::type
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>::value
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>::type
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>
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explicit
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tuple(_Up&&... __u)
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: base_(typename __make_tuple_indices<sizeof...(_Up)>::type(),
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typename __make_tuple_types<tuple, sizeof...(_Up)>::type(),
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typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(),
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typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(),
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_STD::forward<_Up>(__u)...) {}
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template <class _Alloc, class ..._Up,
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class = typename enable_if
|
|
<
|
|
sizeof...(_Up) <= sizeof...(_Tp) &&
|
|
__tuple_convertible
|
|
<
|
|
tuple<_Up...>,
|
|
typename __make_tuple_types<tuple,
|
|
sizeof...(_Up) < sizeof...(_Tp) ?
|
|
sizeof...(_Up) :
|
|
sizeof...(_Tp)>::type
|
|
>::value
|
|
>::type
|
|
>
|
|
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(),
|
|
_STD::forward<_Up>(__u)...) {}
|
|
|
|
template <class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_convertible<_Tuple, tuple>::value
|
|
>::type
|
|
>
|
|
tuple(_Tuple&& __t)
|
|
: base_(_STD::forward<_Tuple>(__t)) {}
|
|
|
|
template <class _Alloc, class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_convertible<_Tuple, tuple>::value
|
|
>::type
|
|
>
|
|
tuple(allocator_arg_t, const _Alloc& __a, _Tuple&& __t)
|
|
: base_(allocator_arg_t(), __a, _STD::forward<_Tuple>(__t)) {}
|
|
|
|
template <class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_assignable<_Tuple, tuple>::value
|
|
>::type
|
|
>
|
|
tuple&
|
|
operator=(_Tuple&& __t)
|
|
{
|
|
base_.operator=(_STD::forward<_Tuple>(__t));
|
|
return *this;
|
|
}
|
|
|
|
void swap(tuple& __t) {base_.swap(__t.base_);}
|
|
};
|
|
|
|
template <>
|
|
class tuple<>
|
|
{
|
|
public:
|
|
tuple() {}
|
|
template <class _Alloc>
|
|
tuple(allocator_arg_t, const _Alloc&) {}
|
|
template <class _Alloc>
|
|
tuple(allocator_arg_t, const _Alloc&, const tuple&) {}
|
|
template <class _U>
|
|
tuple(array<_U, 0>) {}
|
|
template <class _Alloc, class _U>
|
|
tuple(allocator_arg_t, const _Alloc&, array<_U, 0>) {}
|
|
void swap(tuple&) {}
|
|
};
|
|
|
|
template <class ..._Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
swap(tuple<_Tp...>& __t, tuple<_Tp...>& __u) {__t.swap(__u);}
|
|
|
|
// get
|
|
|
|
template <size_t _Ip, class ..._Tp>
|
|
inline
|
|
typename tuple_element<_Ip, tuple<_Tp...>>::type&
|
|
get(tuple<_Tp...>& __t)
|
|
{
|
|
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
|
|
const typename tuple_element<_Ip, tuple<_Tp...>>::type&
|
|
get(const tuple<_Tp...>& __t)
|
|
{
|
|
typedef typename tuple_element<_Ip, tuple<_Tp...>>::type type;
|
|
return static_cast<const __tuple_leaf<_Ip, type>&>(__t.base_).get();
|
|
}
|
|
|
|
// tie
|
|
|
|
template <class ..._Tp>
|
|
inline
|
|
tuple<_Tp&...>
|
|
tie(_Tp&... __t)
|
|
{
|
|
return tuple<_Tp&...>(__t...);
|
|
}
|
|
|
|
template <class _Up>
|
|
struct __ignore_t
|
|
{
|
|
__ignore_t() {}
|
|
template <class _Tp>
|
|
__ignore_t(_Tp&&) {}
|
|
template <class _Tp>
|
|
const __ignore_t& operator=(_Tp&&) const {return *this;}
|
|
};
|
|
|
|
namespace { const __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); }
|
|
|
|
template <class _Tp> class reference_wrapper;
|
|
|
|
template <class _Tp>
|
|
struct ___make_tuple_return
|
|
{
|
|
typedef _Tp type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct ___make_tuple_return<reference_wrapper<_Tp>>
|
|
{
|
|
typedef _Tp& type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __make_tuple_return
|
|
{
|
|
typedef typename ___make_tuple_return<typename decay<_Tp>::type>::type type;
|
|
};
|
|
|
|
template <class... _Tp>
|
|
inline
|
|
tuple<typename __make_tuple_return<_Tp>::type...>
|
|
make_tuple(_Tp&&... __t)
|
|
{
|
|
return tuple<typename __make_tuple_return<_Tp>::type...>(_STD::forward<_Tp>(__t)...);
|
|
}
|
|
|
|
template <class... _Tp>
|
|
inline
|
|
tuple<_Tp&&...>
|
|
forward_as_tuple(_Tp&&... __t)
|
|
{
|
|
return tuple<_Tp&&...>(_STD::forward<_Tp>(__t)...);
|
|
}
|
|
|
|
template <size_t _I>
|
|
struct __tuple_equal
|
|
{
|
|
template <class _Tp, class _Up>
|
|
bool operator()(const _Tp& __x, const _Up& __y)
|
|
{
|
|
return __tuple_equal<_I - 1>()(__x, __y) && get<_I-1>(__x) == get<_I-1>(__y);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct __tuple_equal<0>
|
|
{
|
|
template <class _Tp, class _Up>
|
|
bool operator()(const _Tp&, const _Up&)
|
|
{
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator==(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_equal<sizeof...(_Tp)>()(__x, __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator!=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return !(__x == __y);
|
|
}
|
|
|
|
template <size_t _I>
|
|
struct __tuple_less
|
|
{
|
|
template <class _Tp, class _Up>
|
|
bool operator()(const _Tp& __x, const _Up& __y)
|
|
{
|
|
return __tuple_less<_I-1>()(__x, __y) ||
|
|
(!__tuple_less<_I-1>()(__y, __x) && get<_I-1>(__x) < get<_I-1>(__y));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct __tuple_less<0>
|
|
{
|
|
template <class _Tp, class _Up>
|
|
bool operator()(const _Tp&, const _Up&)
|
|
{
|
|
return false;
|
|
}
|
|
};
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator<(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_less<sizeof...(_Tp)>()(__x, __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator>(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __y < __x;
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator>=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return !(__x < __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline
|
|
bool
|
|
operator<=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return !(__y < __x);
|
|
}
|
|
|
|
// tuple_cat
|
|
|
|
template <class... _Tp, size_t ..._I1, class... _Up, size_t ..._I2>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
__tuple_cat(const tuple<_Tp...>& __x, __tuple_indices<_I1...>, const tuple<_Up...>& __y, __tuple_indices<_I2...>)
|
|
{
|
|
return tuple<_Tp..., _Up...>(get<_I1>(__x)..., get<_I2>(__y)...);
|
|
}
|
|
|
|
template <class... _Tp, class... _Up>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
tuple_cat(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_cat(__x, typename __make_tuple_indices<sizeof...(_Tp)>::type(),
|
|
__y, typename __make_tuple_indices<sizeof...(_Up)>::type());
|
|
}
|
|
|
|
template <class... _Tp, size_t ..._I1, class... _Up, size_t ..._I2>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
__tuple_cat(tuple<_Tp...>&& __x, __tuple_indices<_I1...>, const tuple<_Up...>& __y, __tuple_indices<_I2...>)
|
|
{
|
|
return tuple<_Tp..., _Up...>(_STD::forward<_Tp>(get<_I1>(__x))..., get<_I2>(__y)...);
|
|
}
|
|
|
|
template <class... _Tp, class... _Up>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
tuple_cat(tuple<_Tp...>&& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_cat(_STD::move(__x), typename __make_tuple_indices<sizeof...(_Tp)>::type(),
|
|
__y, typename __make_tuple_indices<sizeof...(_Up)>::type());
|
|
}
|
|
|
|
template <class... _Tp, size_t ..._I1, class... _Up, size_t ..._I2>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
__tuple_cat(const tuple<_Tp...>& __x, __tuple_indices<_I1...>, tuple<_Up...>&& __y, __tuple_indices<_I2...>)
|
|
{
|
|
return tuple<_Tp..., _Up...>(get<_I1>(__x)..., _STD::forward<_Up>(get<_I2>(__y))...);
|
|
}
|
|
|
|
template <class... _Tp, class... _Up>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
tuple_cat(const tuple<_Tp...>& __x, tuple<_Up...>&& __y)
|
|
{
|
|
return __tuple_cat(__x, typename __make_tuple_indices<sizeof...(_Tp)>::type(),
|
|
_STD::move(__y), typename __make_tuple_indices<sizeof...(_Up)>::type());
|
|
}
|
|
|
|
template <class... _Tp, size_t ..._I1, class... _Up, size_t ..._I2>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
__tuple_cat(tuple<_Tp...>&& __x, __tuple_indices<_I1...>, tuple<_Up...>&& __y, __tuple_indices<_I2...>)
|
|
{
|
|
return tuple<_Tp..., _Up...>(_STD::forward<_Tp>(get<_I1>(__x))..., _STD::forward<_Up>(get<_I2>(__y))...);
|
|
}
|
|
|
|
template <class... _Tp, class... _Up>
|
|
inline
|
|
tuple<_Tp..., _Up...>
|
|
tuple_cat(tuple<_Tp...>&& __x, tuple<_Up...>&& __y)
|
|
{
|
|
return __tuple_cat(_STD::move(__x), typename __make_tuple_indices<sizeof...(_Tp)>::type(),
|
|
_STD::move(__y), typename __make_tuple_indices<sizeof...(_Up)>::type());
|
|
}
|
|
|
|
template <class ..._Tp, class _Alloc>
|
|
struct 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(_STD::forward<_Args1>(get<_I1>( __first_args))...),
|
|
second(_STD::forward<_Args2>(get<_I2>(__second_args))...)
|
|
{
|
|
}
|
|
|
|
#endif // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_TUPLE
|