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.
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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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_FOR_EACH_H
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#define _LIBCPP___ALGORITHM_RANGES_FOR_EACH_H
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#include <__algorithm/in_fun_result.h>
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#include <__config>
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#include <__functional/identity.h>
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#include <__functional/invoke.h>
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#include <__iterator/concepts.h>
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#include <__iterator/projected.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/move.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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template <class _Iter, class _Func>
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using for_each_result = in_fun_result<_Iter, _Func>;
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struct __for_each {
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private:
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template <class _Iter, class _Sent, class _Proj, class _Func>
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_LIBCPP_HIDE_FROM_ABI constexpr static for_each_result<_Iter, _Func>
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__for_each_impl(_Iter __first, _Sent __last, _Func& __func, _Proj& __proj) {
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for (; __first != __last; ++__first)
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std::invoke(__func, std::invoke(__proj, *__first));
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return {std::move(__first), std::move(__func)};
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}
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public:
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template <input_iterator _Iter,
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sentinel_for<_Iter> _Sent,
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class _Proj = identity,
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indirectly_unary_invocable<projected<_Iter, _Proj>> _Func>
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_LIBCPP_HIDE_FROM_ABI constexpr for_each_result<_Iter, _Func>
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operator()(_Iter __first, _Sent __last, _Func __func, _Proj __proj = {}) const {
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return __for_each_impl(std::move(__first), std::move(__last), __func, __proj);
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}
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template <input_range _Range,
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class _Proj = identity,
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indirectly_unary_invocable<projected<iterator_t<_Range>, _Proj>> _Func>
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_LIBCPP_HIDE_FROM_ABI constexpr for_each_result<borrowed_iterator_t<_Range>, _Func>
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operator()(_Range&& __range, _Func __func, _Proj __proj = {}) const {
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return __for_each_impl(ranges::begin(__range), ranges::end(__range), __func, __proj);
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}
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};
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inline namespace __cpo {
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inline constexpr auto for_each = __for_each{};
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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_FOR_EACH_H
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