forked from OSchip/llvm-project
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
// -*- 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___MEMORY_RANGES_CONSTRUCT_AT_H
|
|
#define _LIBCPP___MEMORY_RANGES_CONSTRUCT_AT_H
|
|
|
|
#include <__concepts/destructible.h>
|
|
#include <__config>
|
|
#include <__iterator/incrementable_traits.h>
|
|
#include <__iterator/readable_traits.h>
|
|
#include <__memory/concepts.h>
|
|
#include <__memory/construct_at.h>
|
|
#include <__ranges/access.h>
|
|
#include <__ranges/concepts.h>
|
|
#include <__ranges/dangling.h>
|
|
#include <__utility/declval.h>
|
|
#include <__utility/forward.h>
|
|
#include <__utility/move.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_CONCEPTS) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
|
|
namespace ranges {
|
|
|
|
// construct_at
|
|
|
|
namespace __construct_at {
|
|
|
|
struct __fn {
|
|
template<class _Tp, class... _Args, class = decltype(
|
|
::new (declval<void*>()) _Tp(declval<_Args>()...)
|
|
)>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
constexpr _Tp* operator()(_Tp* __location, _Args&& ...__args) const {
|
|
return _VSTD::construct_at(__location, _VSTD::forward<_Args>(__args)...);
|
|
}
|
|
};
|
|
|
|
} // namespace __construct_at
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto construct_at = __construct_at::__fn{};
|
|
} // namespace __cpo
|
|
|
|
// destroy_at
|
|
|
|
namespace __destroy_at {
|
|
|
|
struct __fn {
|
|
template <destructible _Tp>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
constexpr void operator()(_Tp* __location) const noexcept {
|
|
_VSTD::destroy_at(__location);
|
|
}
|
|
};
|
|
|
|
} // namespace __destroy_at
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto destroy_at = __destroy_at::__fn{};
|
|
} // namespace __cpo
|
|
|
|
// destroy
|
|
|
|
namespace __destroy {
|
|
|
|
struct __fn {
|
|
template <__nothrow_input_iterator _InputIterator, __nothrow_sentinel_for<_InputIterator> _Sentinel>
|
|
requires destructible<iter_value_t<_InputIterator>>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
constexpr _InputIterator operator()(_InputIterator __first, _Sentinel __last) const noexcept {
|
|
return _VSTD::__destroy(_VSTD::move(__first), _VSTD::move(__last));
|
|
}
|
|
|
|
template <__nothrow_input_range _InputRange>
|
|
requires destructible<range_value_t<_InputRange>>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
constexpr borrowed_iterator_t<_InputRange> operator()(_InputRange&& __range) const noexcept {
|
|
return (*this)(ranges::begin(__range), ranges::end(__range));
|
|
}
|
|
};
|
|
|
|
} // namespace __destroy
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto destroy = __destroy::__fn{};
|
|
} // namespace __cpo
|
|
|
|
// destroy_n
|
|
|
|
namespace __destroy_n {
|
|
|
|
struct __fn {
|
|
template <__nothrow_input_iterator _InputIterator>
|
|
requires destructible<iter_value_t<_InputIterator>>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
constexpr _InputIterator operator()(_InputIterator __first, iter_difference_t<_InputIterator> __n) const noexcept {
|
|
return _VSTD::destroy_n(_VSTD::move(__first), __n);
|
|
}
|
|
};
|
|
|
|
} // namespace __destroy_n
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto destroy_n = __destroy_n::__fn{};
|
|
} // namespace __cpo
|
|
|
|
} // namespace ranges
|
|
|
|
#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___MEMORY_RANGES_CONSTRUCT_AT_H
|