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ce7771902d
This patch updates the includes guards of the C++ 03 headers. This is part of https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc.
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CXX03___RANGES_REF_VIEW_H
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#define _LIBCPP___CXX03___RANGES_REF_VIEW_H
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#include <__cxx03/__concepts/convertible_to.h>
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#include <__cxx03/__concepts/different_from.h>
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#include <__cxx03/__config>
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#include <__cxx03/__iterator/concepts.h>
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#include <__cxx03/__iterator/incrementable_traits.h>
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#include <__cxx03/__iterator/iterator_traits.h>
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#include <__cxx03/__memory/addressof.h>
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#include <__cxx03/__ranges/access.h>
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#include <__cxx03/__ranges/concepts.h>
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#include <__cxx03/__ranges/data.h>
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#include <__cxx03/__ranges/empty.h>
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#include <__cxx03/__ranges/enable_borrowed_range.h>
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#include <__cxx03/__ranges/size.h>
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#include <__cxx03/__ranges/view_interface.h>
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#include <__cxx03/__type_traits/is_object.h>
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#include <__cxx03/__utility/declval.h>
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#include <__cxx03/__utility/forward.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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namespace ranges {
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template <range _Range>
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requires is_object_v<_Range>
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class ref_view : public view_interface<ref_view<_Range>> {
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_Range* __range_;
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static void __fun(_Range&);
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static void __fun(_Range&&) = delete; // NOLINT(modernize-use-equals-delete) ; This is llvm.org/PR54276
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public:
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template <class _Tp>
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requires __different_from<_Tp, ref_view> && convertible_to<_Tp, _Range&> && requires { __fun(std::declval<_Tp>()); }
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_LIBCPP_HIDE_FROM_ABI constexpr ref_view(_Tp&& __t)
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: __range_(std::addressof(static_cast<_Range&>(std::forward<_Tp>(__t)))) {}
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_LIBCPP_HIDE_FROM_ABI constexpr _Range& base() const { return *__range_; }
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_LIBCPP_HIDE_FROM_ABI constexpr iterator_t<_Range> begin() const { return ranges::begin(*__range_); }
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_LIBCPP_HIDE_FROM_ABI constexpr sentinel_t<_Range> end() const { return ranges::end(*__range_); }
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_LIBCPP_HIDE_FROM_ABI constexpr bool empty() const
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requires requires { ranges::empty(*__range_); }
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{
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return ranges::empty(*__range_);
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}
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_LIBCPP_HIDE_FROM_ABI constexpr auto size() const
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requires sized_range<_Range>
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{
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return ranges::size(*__range_);
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}
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_LIBCPP_HIDE_FROM_ABI constexpr auto data() const
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requires contiguous_range<_Range>
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{
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return ranges::data(*__range_);
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}
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};
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template <class _Range>
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ref_view(_Range&) -> ref_view<_Range>;
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template <class _Tp>
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inline constexpr bool enable_borrowed_range<ref_view<_Tp>> = true;
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} // namespace ranges
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___CXX03___RANGES_REF_VIEW_H
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