d10dc5a06f
We originally put implementation-detail function objects into individual namespaces for `std::ranges` without a good reason for doing so. This practice was continued, presumably because there was prior art. Since there's no reason to keep these namespaces, this commit removes them, which will slightly impact binary size. This commit does not apply to CPOs, some of which need additional work.
109 lines
3.1 KiB
C++
109 lines
3.1 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___MEMORY_RANGES_CONSTRUCT_AT_H
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#define _LIBCPP___MEMORY_RANGES_CONSTRUCT_AT_H
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#include <__concepts/destructible.h>
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#include <__config>
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#include <__iterator/incrementable_traits.h>
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#include <__iterator/iterator_traits.h>
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#include <__memory/concepts.h>
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#include <__memory/construct_at.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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#include <__utility/declval.h>
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#include <__utility/forward.h>
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#include <__utility/move.h>
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#include <new>
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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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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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namespace ranges {
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// construct_at
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struct __construct_at {
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template <class _Tp, class... _Args, class = decltype(::new(std::declval<void*>()) _Tp(std::declval<_Args>()...))>
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_LIBCPP_HIDE_FROM_ABI constexpr _Tp* operator()(_Tp* __location, _Args&&... __args) const {
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return std::construct_at(__location, std::forward<_Args>(__args)...);
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}
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};
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inline namespace __cpo {
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inline constexpr auto construct_at = __construct_at{};
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} // namespace __cpo
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// destroy_at
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struct __destroy_at {
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template <destructible _Tp>
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_LIBCPP_HIDE_FROM_ABI constexpr void operator()(_Tp* __location) const noexcept {
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std::destroy_at(__location);
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}
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};
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inline namespace __cpo {
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inline constexpr auto destroy_at = __destroy_at{};
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} // namespace __cpo
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// destroy
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struct __destroy {
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template <__nothrow_input_iterator _InputIterator, __nothrow_sentinel_for<_InputIterator> _Sentinel>
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requires destructible<iter_value_t<_InputIterator>>
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_LIBCPP_HIDE_FROM_ABI constexpr _InputIterator operator()(_InputIterator __first, _Sentinel __last) const noexcept {
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return std::__destroy(std::move(__first), std::move(__last));
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}
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template <__nothrow_input_range _InputRange>
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requires destructible<range_value_t<_InputRange>>
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_LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_InputRange> operator()(_InputRange&& __range) const noexcept {
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return (*this)(ranges::begin(__range), ranges::end(__range));
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}
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};
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inline namespace __cpo {
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inline constexpr auto destroy = __destroy{};
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} // namespace __cpo
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// destroy_n
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struct __destroy_n {
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template <__nothrow_input_iterator _InputIterator>
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requires destructible<iter_value_t<_InputIterator>>
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_LIBCPP_HIDE_FROM_ABI constexpr _InputIterator
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operator()(_InputIterator __first, iter_difference_t<_InputIterator> __n) const noexcept {
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return std::destroy_n(std::move(__first), __n);
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}
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};
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inline namespace __cpo {
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inline constexpr auto destroy_n = __destroy_n{};
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} // namespace __cpo
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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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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___MEMORY_RANGES_CONSTRUCT_AT_H
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