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author | mikhnenko <mikhnenko@yandex-team.com> | 2023-09-20 11:01:13 +0300 |
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committer | mikhnenko <mikhnenko@yandex-team.com> | 2023-09-20 11:29:08 +0300 |
commit | f5b051f5e09f00265229985ba5fd47aa5c8959ff (patch) | |
tree | 7e11605ad566f09451623a1ac34cc644bae804ab /contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h | |
parent | 8ed995cdfb22a3dfa790b0a6ae7750d9dc85db7b (diff) | |
download | ydb-f5b051f5e09f00265229985ba5fd47aa5c8959ff.tar.gz |
Split libcxx on msvc/other
Diffstat (limited to 'contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h')
-rw-r--r-- | contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h b/contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h new file mode 100644 index 0000000000..b4045cd06a --- /dev/null +++ b/contrib/libs/cxxsupp/libcxxmsvc/include/__algorithm/copy.h @@ -0,0 +1,77 @@ +//===----------------------------------------------------------------------===// +// +// 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_COPY_H +#define _LIBCPP___ALGORITHM_COPY_H + +#include <__algorithm/unwrap_iter.h> +#include <__config> +#include <__iterator/iterator_traits.h> +#include <cstring> +#include <type_traits> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// copy + +template <class _InputIterator, class _OutputIterator> +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 +_OutputIterator +__copy_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result) +{ + for (; __first != __last; ++__first, (void) ++__result) + *__result = *__first; + return __result; +} + +template <class _InputIterator, class _OutputIterator> +inline _LIBCPP_INLINE_VISIBILITY +_OutputIterator +__copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result) +{ + return _VSTD::__copy_constexpr(__first, __last, __result); +} + +template <class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + is_same<typename remove_const<_Tp>::type, _Up>::value && + is_trivially_copy_assignable<_Up>::value, + _Up* +>::type +__copy(_Tp* __first, _Tp* __last, _Up* __result) +{ + const size_t __n = static_cast<size_t>(__last - __first); + if (__n > 0) + _VSTD::memmove(__result, __first, __n * sizeof(_Up)); + return __result + __n; +} + +template <class _InputIterator, class _OutputIterator> +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 +_OutputIterator +copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result) +{ + if (__libcpp_is_constant_evaluated()) { + return _VSTD::__copy_constexpr(__first, __last, __result); + } else { + return _VSTD::__rewrap_iter(__result, + _VSTD::__copy(_VSTD::__unwrap_iter(__first), + _VSTD::__unwrap_iter(__last), + _VSTD::__unwrap_iter(__result))); + } +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___ALGORITHM_COPY_H |