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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
61 lines
1.8 KiB
C++
Vendored
61 lines
1.8 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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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___ALGORITHM_RANGES_FILL_H
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#define _LIBCPP___ALGORITHM_RANGES_FILL_H
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#include <__algorithm/ranges_fill_n.h>
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#include <__config>
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#include <__iterator/concepts.h>
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#include <__ranges/access.h>
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#include <__ranges/concepts.h>
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#include <__ranges/dangling.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_PUSH_MACROS
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#include <__undef_macros>
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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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struct __fill {
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template <class _Type, output_iterator<const _Type&> _Iter, sentinel_for<_Iter> _Sent>
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_LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(_Iter __first, _Sent __last, const _Type& __value) const {
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if constexpr (random_access_iterator<_Iter> && sized_sentinel_for<_Sent, _Iter>) {
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return ranges::fill_n(__first, __last - __first, __value);
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} else {
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for (; __first != __last; ++__first)
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*__first = __value;
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return __first;
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}
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}
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template <class _Type, output_range<const _Type&> _Range>
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_LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator()(_Range&& __range, const _Type& __value) const {
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return (*this)(ranges::begin(__range), ranges::end(__range), __value);
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}
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};
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inline namespace __cpo {
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inline constexpr auto fill = __fill{};
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} // namespace __cpo
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} // namespace ranges
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___ALGORITHM_RANGES_FILL_H
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