diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/ranges_contains.h')
-rw-r--r-- | contrib/llvm-project/libcxx/include/__algorithm/ranges_contains.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/ranges_contains.h b/contrib/llvm-project/libcxx/include/__algorithm/ranges_contains.h new file mode 100644 index 000000000000..f92fcec587d8 --- /dev/null +++ b/contrib/llvm-project/libcxx/include/__algorithm/ranges_contains.h @@ -0,0 +1,61 @@ +//===----------------------------------------------------------------------===// +// +// 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_CONTAINS_H +#define _LIBCPP___ALGORITHM_RANGES_CONTAINS_H + +#include <__algorithm/ranges_find.h> +#include <__config> +#include <__functional/identity.h> +#include <__functional/ranges_operations.h> +#include <__functional/reference_wrapper.h> +#include <__iterator/concepts.h> +#include <__iterator/indirectly_comparable.h> +#include <__iterator/projected.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER >= 23 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { +namespace __contains { +struct __fn { + template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity> + requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool static + operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) { + return ranges::find(std::move(__first), __last, __value, std::ref(__proj)) != __last; + } + + template <input_range _Range, class _Type, class _Proj = identity> + requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*> + _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool static + operator()(_Range&& __range, const _Type& __value, _Proj __proj = {}) { + return ranges::find(ranges::begin(__range), ranges::end(__range), __value, std::ref(__proj)) != + ranges::end(__range); + } +}; +} // namespace __contains + +inline namespace __cpo { +inline constexpr auto contains = __contains::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER >= 23 + +#endif // _LIBCPP___ALGORITHM_RANGES_CONTAINS_H |