mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-26 02:36:06 +00:00
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.
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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___ALGORITHM_RANGES_SAMPLE_H
|
|
#define _LIBCPP___ALGORITHM_RANGES_SAMPLE_H
|
|
|
|
#include <__algorithm/iterator_operations.h>
|
|
#include <__algorithm/sample.h>
|
|
#include <__algorithm/uniform_random_bit_generator_adaptor.h>
|
|
#include <__config>
|
|
#include <__iterator/concepts.h>
|
|
#include <__iterator/incrementable_traits.h>
|
|
#include <__iterator/iterator_traits.h>
|
|
#include <__random/uniform_random_bit_generator.h>
|
|
#include <__ranges/access.h>
|
|
#include <__ranges/concepts.h>
|
|
#include <__type_traits/remove_reference.h>
|
|
#include <__utility/forward.h>
|
|
#include <__utility/move.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_PUSH_MACROS
|
|
#include <__undef_macros>
|
|
|
|
#if _LIBCPP_STD_VER >= 20
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
namespace ranges {
|
|
struct __sample {
|
|
template <input_iterator _Iter, sentinel_for<_Iter> _Sent, weakly_incrementable _OutIter, class _Gen>
|
|
requires(forward_iterator<_Iter> || random_access_iterator<_OutIter>) && indirectly_copyable<_Iter, _OutIter> &&
|
|
uniform_random_bit_generator<remove_reference_t<_Gen>>
|
|
_LIBCPP_HIDE_FROM_ABI _OutIter
|
|
operator()(_Iter __first, _Sent __last, _OutIter __out_first, iter_difference_t<_Iter> __n, _Gen&& __gen) const {
|
|
_ClassicGenAdaptor<_Gen> __adapted_gen(__gen);
|
|
return std::__sample<_RangeAlgPolicy>(
|
|
std::move(__first), std::move(__last), std::move(__out_first), __n, __adapted_gen);
|
|
}
|
|
|
|
template <input_range _Range, weakly_incrementable _OutIter, class _Gen>
|
|
requires(forward_range<_Range> || random_access_iterator<_OutIter>) &&
|
|
indirectly_copyable<iterator_t<_Range>, _OutIter> && uniform_random_bit_generator<remove_reference_t<_Gen>>
|
|
_LIBCPP_HIDE_FROM_ABI _OutIter
|
|
operator()(_Range&& __range, _OutIter __out_first, range_difference_t<_Range> __n, _Gen&& __gen) const {
|
|
return (*this)(
|
|
ranges::begin(__range), ranges::end(__range), std::move(__out_first), __n, std::forward<_Gen>(__gen));
|
|
}
|
|
};
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto sample = __sample{};
|
|
} // namespace __cpo
|
|
} // namespace ranges
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_STD_VER >= 20
|
|
|
|
_LIBCPP_POP_MACROS
|
|
|
|
#endif // _LIBCPP___ALGORITHM_RANGES_SAMPLE_H
|