754ea6fd4d
Also: - refactor out `__voidify`; - use the `destroy` algorithm internally; - refactor out helper classes used in tests for `uninitialized_*` algorithms. Differential Revision: https://reviews.llvm.org/D115626
213 lines
7.2 KiB
C++
213 lines
7.2 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_UNINITIALIZED_ALGORITHMS_H
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#define _LIBCPP___MEMORY_RANGES_UNINITIALIZED_ALGORITHMS_H
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#include <__concepts/constructible.h>
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#include <__config>
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#include <__function_like.h>
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#include <__iterator/incrementable_traits.h>
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#include <__iterator/iterator_traits.h>
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#include <__iterator/readable_traits.h>
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#include <__memory/concepts.h>
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#include <__memory/uninitialized_algorithms.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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#include <type_traits>
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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_BEGIN_NAMESPACE_STD
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#if !defined(_LIBCPP_HAS_NO_RANGES)
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namespace ranges {
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// uninitialized_default_construct
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namespace __uninitialized_default_construct {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept : __function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator,
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__nothrow_sentinel_for<_ForwardIterator> _Sentinel>
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requires default_initializable<iter_value_t<_ForwardIterator>>
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_ForwardIterator operator()(_ForwardIterator __first, _Sentinel __last) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_default_construct<_ValueType>(
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_VSTD::move(__first), _VSTD::move(__last));
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}
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template <__nothrow_forward_range _ForwardRange>
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requires default_initializable<range_value_t<_ForwardRange>>
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borrowed_iterator_t<_ForwardRange> operator()(_ForwardRange&& __range) const {
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return (*this)(ranges::begin(__range), ranges::end(__range));
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}
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};
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} // namespace __uninitialized_default_construct
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inline namespace __cpo {
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inline constexpr auto uninitialized_default_construct =
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__uninitialized_default_construct::__fn(__function_like::__tag());
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} // namespace __cpo
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// uninitialized_default_construct_n
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namespace __uninitialized_default_construct_n {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept :
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__function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator>
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requires default_initializable<iter_value_t<_ForwardIterator>>
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_ForwardIterator operator()(_ForwardIterator __first,
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iter_difference_t<_ForwardIterator> __n) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_default_construct_n<_ValueType>(_VSTD::move(__first), __n);
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}
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};
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} // namespace __uninitialized_default_construct_n
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inline namespace __cpo {
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inline constexpr auto uninitialized_default_construct_n =
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__uninitialized_default_construct_n::__fn(__function_like::__tag());
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} // namespace __cpo
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// uninitialized_value_construct
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namespace __uninitialized_value_construct {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept : __function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator,
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__nothrow_sentinel_for<_ForwardIterator> _Sentinel>
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requires default_initializable<iter_value_t<_ForwardIterator>>
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_ForwardIterator operator()(_ForwardIterator __first, _Sentinel __last) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_value_construct<_ValueType>(
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_VSTD::move(__first), _VSTD::move(__last));
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}
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template <__nothrow_forward_range _ForwardRange>
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requires default_initializable<range_value_t<_ForwardRange>>
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borrowed_iterator_t<_ForwardRange> operator()(_ForwardRange&& __range) const {
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return (*this)(ranges::begin(__range), ranges::end(__range));
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}
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};
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} // namespace __uninitialized_value_construct
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inline namespace __cpo {
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inline constexpr auto uninitialized_value_construct =
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__uninitialized_value_construct::__fn(__function_like::__tag());
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} // namespace __cpo
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// uninitialized_value_construct_n
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namespace __uninitialized_value_construct_n {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept : __function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator>
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requires default_initializable<iter_value_t<_ForwardIterator>>
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_ForwardIterator operator()(_ForwardIterator __first,
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iter_difference_t<_ForwardIterator> __n) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_value_construct_n<_ValueType>(_VSTD::move(__first), __n);
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}
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};
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} // namespace __uninitialized_value_construct_n
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inline namespace __cpo {
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inline constexpr auto uninitialized_value_construct_n =
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__uninitialized_value_construct_n::__fn(__function_like::__tag());
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} // namespace __cpo
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// uninitialized_fill
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namespace __uninitialized_fill {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept : __function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator,
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__nothrow_sentinel_for<_ForwardIterator> _Sentinel,
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class _Tp>
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requires constructible_from<iter_value_t<_ForwardIterator>, const _Tp&>
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_ForwardIterator operator()(_ForwardIterator __first, _Sentinel __last, const _Tp& __x) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_fill<_ValueType>(_VSTD::move(__first), _VSTD::move(__last), __x);
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}
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template <__nothrow_forward_range _ForwardRange, class _Tp>
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requires constructible_from<range_value_t<_ForwardRange>, const _Tp&>
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borrowed_iterator_t<_ForwardRange> operator()(_ForwardRange&& __range, const _Tp& __x) const {
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return (*this)(ranges::begin(__range), ranges::end(__range), __x);
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}
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};
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} // namespace __uninitialized_fil
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inline namespace __cpo {
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inline constexpr auto uninitialized_fill = __uninitialized_fill::__fn(__function_like::__tag());
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} // namespace __cpo
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// uninitialized_fill_n
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namespace __uninitialized_fill_n {
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struct __fn final : private __function_like {
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constexpr explicit __fn(__tag __x) noexcept : __function_like(__x) {}
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template <__nothrow_forward_iterator _ForwardIterator, class _Tp>
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requires constructible_from<iter_value_t<_ForwardIterator>, const _Tp&>
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_ForwardIterator operator()(_ForwardIterator __first,
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iter_difference_t<_ForwardIterator> __n,
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const _Tp& __x) const {
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using _ValueType = remove_reference_t<iter_reference_t<_ForwardIterator>>;
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return _VSTD::__uninitialized_fill_n<_ValueType>(_VSTD::move(__first), __n, __x);
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}
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};
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} // namespace __uninitialized_fill_n
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inline namespace __cpo {
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inline constexpr auto uninitialized_fill_n = __uninitialized_fill_n::__fn(__function_like::__tag());
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} // namespace __cpo
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} // namespace ranges
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#endif // !defined(_LIBCPP_HAS_NO_RANGES)
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___MEMORY_RANGES_UNINITIALIZED_ALGORITHMS_H
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