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| 1 | // -*- C++ -*- |
|---|---|
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H |
| 11 | #define _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H |
| 12 | |
| 13 | #include <__config> |
| 14 | #include <__fwd/pair.h> |
| 15 | #include <__ranges/concepts.h> |
| 16 | #include <__type_traits/remove_const.h> |
| 17 | |
| 18 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 19 | # pragma GCC system_header |
| 20 | #endif |
| 21 | |
| 22 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 23 | |
| 24 | #if _LIBCPP_STD_VER >= 23 |
| 25 | |
| 26 | template <ranges::input_range _Range> |
| 27 | using __range_key_type _LIBCPP_NODEBUG = __remove_const_t<typename ranges::range_value_t<_Range>::first_type>; |
| 28 | |
| 29 | template <ranges::input_range _Range> |
| 30 | using __range_mapped_type _LIBCPP_NODEBUG = typename ranges::range_value_t<_Range>::second_type; |
| 31 | |
| 32 | template <ranges::input_range _Range> |
| 33 | using __range_to_alloc_type _LIBCPP_NODEBUG = |
| 34 | pair<const typename ranges::range_value_t<_Range>::first_type, typename ranges::range_value_t<_Range>::second_type>; |
| 35 | |
| 36 | #endif |
| 37 | |
| 38 | _LIBCPP_END_NAMESPACE_STD |
| 39 | |
| 40 | #endif // _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H |
| 41 |
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