v1/__ranges/container_compatible_range.h

0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___RANGES_CONTAINER_COMPATIBLE_RANGE_H
0011 #define _LIBCPP___RANGES_CONTAINER_COMPATIBLE_RANGE_H
0012
0013 #include <__concepts/convertible_to.h>
0014 #include <__config>
0015 #include <__ranges/concepts.h>
0016
0017 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0018 #  pragma GCC system_header
0019 #endif
0020
0021 _LIBCPP_BEGIN_NAMESPACE_STD
0022
0023 #if _LIBCPP_STD_VER >= 23
0024
0025 template <class _Range, class _Tp>
0026 concept _ContainerCompatibleRange =
0027     ranges::input_range<_Range> && convertible_to<ranges::range_reference_t<_Range>, _Tp>;
0028
0029 #endif // _LIBCPP_STD_VER >= 23
0030
0031 _LIBCPP_END_NAMESPACE_STD
0032
0033 #endif // _LIBCPP___RANGES_CONTAINER_COMPATIBLE_RANGE_H