summaryrefslogtreecommitdiffstats
path: root/lib/libcxx/include/__tuple
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libcxx/include/__tuple')
-rw-r--r--lib/libcxx/include/__tuple438
1 files changed, 438 insertions, 0 deletions
diff --git a/lib/libcxx/include/__tuple b/lib/libcxx/include/__tuple
new file mode 100644
index 00000000000..cc9fbbebc09
--- /dev/null
+++ b/lib/libcxx/include/__tuple
@@ -0,0 +1,438 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___TUPLE
+#define _LIBCPP___TUPLE
+
+#include <__config>
+#include <cstddef>
+#include <type_traits>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp> class _LIBCPP_TYPE_VIS_ONLY tuple_size;
+
+template <class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_size<const _Tp>
+ : public tuple_size<_Tp> {};
+
+template <class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_size<volatile _Tp>
+ : public tuple_size<_Tp> {};
+
+template <class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_size<const volatile _Tp>
+ : public tuple_size<_Tp> {};
+
+template <size_t _Ip, class _Tp> class _LIBCPP_TYPE_VIS_ONLY tuple_element;
+
+template <size_t _Ip, class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, const _Tp>
+{
+public:
+ typedef typename add_const<typename tuple_element<_Ip, _Tp>::type>::type type;
+};
+
+template <size_t _Ip, class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, volatile _Tp>
+{
+public:
+ typedef typename add_volatile<typename tuple_element<_Ip, _Tp>::type>::type type;
+};
+
+template <size_t _Ip, class _Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, const volatile _Tp>
+{
+public:
+ typedef typename add_cv<typename tuple_element<_Ip, _Tp>::type>::type type;
+};
+
+template <class _Tp> struct __tuple_like : false_type {};
+
+template <class _Tp> struct __tuple_like<const _Tp> : public __tuple_like<_Tp> {};
+template <class _Tp> struct __tuple_like<volatile _Tp> : public __tuple_like<_Tp> {};
+template <class _Tp> struct __tuple_like<const volatile _Tp> : public __tuple_like<_Tp> {};
+
+// tuple specializations
+
+#if !defined(_LIBCPP_HAS_NO_VARIADICS)
+
+template <size_t...> struct __tuple_indices {};
+
+template <class _IdxType, _IdxType... _Values>
+struct __integer_sequence {
+ template <template <class _OIdxType, _OIdxType...> class _ToIndexSeq, class _ToIndexType>
+ using __convert = _ToIndexSeq<_ToIndexType, _Values...>;
+
+ template <size_t _Sp>
+ using __to_tuple_indices = __tuple_indices<(_Values + _Sp)...>;
+};
+
+#if !__has_builtin(__make_integer_seq) || defined(_LIBCPP_TESTING_FALLBACK_MAKE_INTEGER_SEQUENCE)
+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> {}; };
+
+} // namespace detail
+
+#endif // !__has_builtin(__make_integer_seq) || defined(_LIBCPP_TESTING_FALLBACK_MAKE_INTEGER_SEQUENCE)
+
+#if __has_builtin(__make_integer_seq)
+template <size_t _Ep, size_t _Sp>
+using __make_indices_imp =
+ typename __make_integer_seq<__integer_sequence, size_t, _Ep - _Sp>::template
+ __to_tuple_indices<_Sp>;
+#else
+template <size_t _Ep, size_t _Sp>
+using __make_indices_imp =
+ typename __detail::__make<_Ep - _Sp>::type::template __to_tuple_indices<_Sp>;
+
+#endif
+
+template <size_t _Ep, size_t _Sp = 0>
+struct __make_tuple_indices
+{
+ static_assert(_Sp <= _Ep, "__make_tuple_indices input error");
+ typedef __make_indices_imp<_Ep, _Sp> type;
+};
+
+
+template <class ..._Tp> class _LIBCPP_TYPE_VIS_ONLY tuple;
+
+template <class... _Tp> struct __tuple_like<tuple<_Tp...> > : true_type {};
+
+template <size_t _Ip, class ..._Tp>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+typename tuple_element<_Ip, tuple<_Tp...> >::type&
+get(tuple<_Tp...>&) _NOEXCEPT;
+
+template <size_t _Ip, class ..._Tp>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const typename tuple_element<_Ip, tuple<_Tp...> >::type&
+get(const tuple<_Tp...>&) _NOEXCEPT;
+
+template <size_t _Ip, class ..._Tp>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+typename tuple_element<_Ip, tuple<_Tp...> >::type&&
+get(tuple<_Tp...>&&) _NOEXCEPT;
+
+template <size_t _Ip, class ..._Tp>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const typename tuple_element<_Ip, tuple<_Tp...> >::type&&
+get(const tuple<_Tp...>&&) _NOEXCEPT;
+#endif
+
+// pair specializations
+
+template <class _T1, class _T2> struct __tuple_like<pair<_T1, _T2> > : true_type {};
+
+template <size_t _Ip, class _T1, class _T2>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+typename tuple_element<_Ip, pair<_T1, _T2> >::type&
+get(pair<_T1, _T2>&) _NOEXCEPT;
+
+template <size_t _Ip, class _T1, class _T2>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
+get(const pair<_T1, _T2>&) _NOEXCEPT;
+
+#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
+template <size_t _Ip, class _T1, class _T2>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
+get(pair<_T1, _T2>&&) _NOEXCEPT;
+
+template <size_t _Ip, class _T1, class _T2>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
+get(const pair<_T1, _T2>&&) _NOEXCEPT;
+#endif
+
+// array specializations
+
+template <class _Tp, size_t _Size> struct _LIBCPP_TYPE_VIS_ONLY array;
+
+template <class _Tp, size_t _Size> struct __tuple_like<array<_Tp, _Size> > : true_type {};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+_Tp&
+get(array<_Tp, _Size>&) _NOEXCEPT;
+
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const _Tp&
+get(const array<_Tp, _Size>&) _NOEXCEPT;
+
+#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+_Tp&&
+get(array<_Tp, _Size>&&) _NOEXCEPT;
+
+template <size_t _Ip, class _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const _Tp&&
+get(const array<_Tp, _Size>&&) _NOEXCEPT;
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_VARIADICS)
+
+
+// __tuple_types
+
+template <class ..._Tp> struct __tuple_types {};
+
+#if !__has_builtin(__type_pack_element)
+
+namespace __indexer_detail {
+
+template <size_t _Idx, class _Tp>
+struct __indexed { using type = _Tp; };
+
+template <class _Types, class _Indexes> struct __indexer;
+
+template <class ..._Types, size_t ..._Idx>
+struct __indexer<__tuple_types<_Types...>, __tuple_indices<_Idx...>>
+ : __indexed<_Idx, _Types>...
+{};
+
+template <size_t _Idx, class _Tp>
+__indexed<_Idx, _Tp> __at_index(__indexed<_Idx, _Tp> const&);
+
+} // namespace __indexer_detail
+
+template <size_t _Idx, class ..._Types>
+using __type_pack_element = typename decltype(
+ __indexer_detail::__at_index<_Idx>(
+ __indexer_detail::__indexer<
+ __tuple_types<_Types...>,
+ typename __make_tuple_indices<sizeof...(_Types)>::type
+ >{})
+ )::type;
+#endif
+
+template <size_t _Ip, class ..._Types>
+class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, __tuple_types<_Types...>>
+{
+public:
+ static_assert(_Ip < sizeof...(_Types), "tuple_element index out of range");
+ typedef __type_pack_element<_Ip, _Types...> type;
+};
+
+
+template <class ..._Tp>
+class _LIBCPP_TYPE_VIS_ONLY tuple_size<__tuple_types<_Tp...> >
+ : public integral_constant<size_t, sizeof...(_Tp)>
+{
+};
+
+template <class... _Tp> struct __tuple_like<__tuple_types<_Tp...> > : true_type {};
+
+template <bool _ApplyLV, bool _ApplyConst, bool _ApplyVolatile>
+struct __apply_cv_mf;
+template <>
+struct __apply_cv_mf<false, false, false> {
+ template <class _Tp> using __apply = _Tp;
+};
+template <>
+struct __apply_cv_mf<false, true, false> {
+ template <class _Tp> using __apply = const _Tp;
+};
+template <>
+struct __apply_cv_mf<false, false, true> {
+ template <class _Tp> using __apply = volatile _Tp;
+};
+template <>
+struct __apply_cv_mf<false, true, true> {
+ template <class _Tp> using __apply = const volatile _Tp;
+};
+template <>
+struct __apply_cv_mf<true, false, false> {
+ template <class _Tp> using __apply = _Tp&;
+};
+template <>
+struct __apply_cv_mf<true, true, false> {
+ template <class _Tp> using __apply = const _Tp&;
+};
+template <>
+struct __apply_cv_mf<true, false, true> {
+ template <class _Tp> using __apply = volatile _Tp&;
+};
+template <>
+struct __apply_cv_mf<true, true, true> {
+ template <class _Tp> using __apply = const volatile _Tp&;
+};
+template <class _Tp, class _RawTp = typename remove_reference<_Tp>::type>
+using __apply_cv_t = __apply_cv_mf<
+ is_lvalue_reference<_Tp>::value,
+ is_const<_RawTp>::value,
+ is_volatile<_RawTp>::value>;
+
+// __make_tuple_types
+
+// __make_tuple_types<_Tuple<_Types...>, _Ep, _Sp>::type is a
+// __tuple_types<_Types...> using only those _Types in the range [_Sp, _Ep).
+// _Sp defaults to 0 and _Ep defaults to tuple_size<_Tuple>. If _Tuple is a
+// lvalue_reference type, then __tuple_types<_Types&...> is the result.
+
+template <class _TupleTypes, class _TupleIndices>
+struct __make_tuple_types_flat;
+
+template <template <class...> class _Tuple, class ..._Types, size_t ..._Idx>
+struct __make_tuple_types_flat<_Tuple<_Types...>, __tuple_indices<_Idx...>> {
+ // Specialization for pair, tuple, and __tuple_types
+ template <class _Tp, class _ApplyFn = __apply_cv_t<_Tp>>
+ using __apply_quals = __tuple_types<
+ typename _ApplyFn::template __apply<__type_pack_element<_Idx, _Types...>>...
+ >;
+};
+
+template <class _Vt, size_t _Np, size_t ..._Idx>
+struct __make_tuple_types_flat<array<_Vt, _Np>, __tuple_indices<_Idx...>> {
+ template <size_t>
+ using __value_type = _Vt;
+ template <class _Tp, class _ApplyFn = __apply_cv_t<_Tp>>
+ using __apply_quals = __tuple_types<
+ typename _ApplyFn::template __apply<__value_type<_Idx>>...
+ >;
+};
+
+template <class _Tp, size_t _Ep = tuple_size<typename remove_reference<_Tp>::type>::value,
+ size_t _Sp = 0,
+ bool _SameSize = (_Ep == tuple_size<typename remove_reference<_Tp>::type>::value)>
+struct __make_tuple_types
+{
+ static_assert(_Sp <= _Ep, "__make_tuple_types input error");
+ using _RawTp = typename remove_cv<typename remove_reference<_Tp>::type>::type;
+ using _Maker = __make_tuple_types_flat<_RawTp, typename __make_tuple_indices<_Ep, _Sp>::type>;
+ using type = typename _Maker::template __apply_quals<_Tp>;
+};
+
+template <class ..._Types, size_t _Ep>
+struct __make_tuple_types<tuple<_Types...>, _Ep, 0, true> {
+ typedef __tuple_types<_Types...> type;
+};
+
+template <class ..._Types, size_t _Ep>
+struct __make_tuple_types<__tuple_types<_Types...>, _Ep, 0, true> {
+ typedef __tuple_types<_Types...> type;
+};
+
+template <bool ..._Preds>
+struct __all_dummy;
+
+template <bool ..._Pred>
+using __all = is_same<__all_dummy<_Pred...>, __all_dummy<(_Pred, true)...>>;
+
+struct __tuple_sfinae_base {
+ template <template <class, class...> class _Trait,
+ class ..._LArgs, class ..._RArgs>
+ static auto __do_test(__tuple_types<_LArgs...>, __tuple_types<_RArgs...>)
+ -> __all<typename enable_if<_Trait<_LArgs, _RArgs>::value, bool>::type{true}...>;
+ template <template <class...> class>
+ static auto __do_test(...) -> false_type;
+
+ template <class _FromArgs, class _ToArgs>
+ using __constructible = decltype(__do_test<is_constructible>(_ToArgs{}, _FromArgs{}));
+ template <class _FromArgs, class _ToArgs>
+ using __convertible = decltype(__do_test<is_convertible>(_FromArgs{}, _ToArgs{}));
+ template <class _FromArgs, class _ToArgs>
+ using __assignable = decltype(__do_test<is_assignable>(_ToArgs{}, _FromArgs{}));
+};
+
+// __tuple_convertible
+
+template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
+ bool = __tuple_like<_Up>::value>
+struct __tuple_convertible
+ : public false_type {};
+
+template <class _Tp, class _Up>
+struct __tuple_convertible<_Tp, _Up, true, true>
+ : public __tuple_sfinae_base::__convertible<
+ typename __make_tuple_types<_Tp>::type
+ , typename __make_tuple_types<_Up>::type
+ >
+{};
+
+// __tuple_constructible
+
+template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
+ bool = __tuple_like<_Up>::value>
+struct __tuple_constructible
+ : public false_type {};
+
+template <class _Tp, class _Up>
+struct __tuple_constructible<_Tp, _Up, true, true>
+ : public __tuple_sfinae_base::__constructible<
+ typename __make_tuple_types<_Tp>::type
+ , typename __make_tuple_types<_Up>::type
+ >
+{};
+
+// __tuple_assignable
+
+template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
+ bool = __tuple_like<_Up>::value>
+struct __tuple_assignable
+ : public false_type {};
+
+template <class _Tp, class _Up>
+struct __tuple_assignable<_Tp, _Up, true, true>
+ : public __tuple_sfinae_base::__assignable<
+ typename __make_tuple_types<_Tp>::type
+ , typename __make_tuple_types<_Up&>::type
+ >
+{};
+
+#endif // _LIBCPP_HAS_NO_VARIADICS
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___TUPLE
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.