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llvm-project/libcxx/include/__fwd/pair.h

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[libc++] Granularize the rest of type_traits Reviewed By: ldionne, #libc Spies: libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D130471
2022-08-13 23:10:31 +02:00
//===---------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===---------------------------------------------------------------------===//
#ifndef _LIBCPP___FWD_PAIR_H
#define _LIBCPP___FWD_PAIR_H
#include <__config>
[libc++][modules] Modularize <cstddef> (#107254) Many headers include `<cstddef>` just for size_t, and pulling in additional content (e.g. the traits used for std::byte) is unnecessary. To solve this problem, this patch splits up `<cstddef>` into subcomponents so that headers can include only the parts that they actually require. This has the added benefit of making the modules build a lot stricter with respect to IWYU, and also providing a canonical location where we define `std::size_t` and friends (which were previously defined in multiple headers like `<cstddef>` and `<ctime>`). After this patch, there's still many places in the codebase where we include `<cstddef>` when `<__cstddef/size_t.h>` would be sufficient. This patch focuses on removing `<cstddef>` includes from __type_traits to make these headers non-circular with `<cstddef>`. Additional refactorings can be tackled separately.
2024-09-05 08:28:33 -04:00
#include <__cstddef/size_t.h>
[libc++] Move the contents of `__fwd/get.h` into the forward declaration headers they actually belong to (#81368) This brings us closer to one forward declaring header per public header.
2024-02-12 08:32:28 +01:00
#include <__fwd/tuple.h>
[libc++] Granularize the rest of type_traits Reviewed By: ldionne, #libc Spies: libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D130471
2022-08-13 23:10:31 +02:00
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class, class>
[libc++] Remove _LIBCPP_TEMPLATE_VIS (#134885) The need for `_LIBCPP_TEMPLATE_VIS` has been removed in #133233.
2025-04-09 23:47:57 +02:00
struct pair;
[libc++] Granularize the rest of type_traits Reviewed By: ldionne, #libc Spies: libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D130471
2022-08-13 23:10:31 +02:00
[libc++] Move the contents of `__fwd/get.h` into the forward declaration headers they actually belong to (#81368) This brings us closer to one forward declaring header per public header.
2024-02-12 08:32:28 +01:00
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(pair<_T1, _T2>&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(const pair<_T1, _T2>&) _NOEXCEPT;
#ifndef _LIBCPP_CXX03_LANG
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
get(pair<_T1, _T2>&&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
get(const pair<_T1, _T2>&&) _NOEXCEPT;
#endif
[libc++] Granularize the rest of type_traits Reviewed By: ldionne, #libc Spies: libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D130471
2022-08-13 23:10:31 +02:00
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___FWD_PAIR_H
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