================ @@ -0,0 +1,54 @@ +// -*- 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___NUMERIC_RANGES_IOTA_H +#define _LIBCPP___NUMERIC_RANGES_IOTA_H + +#include <__algorithm/out_value_result.h> +#include <__config> +#include <__ranges/concepts.h> +#include <__utility/as_const.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 +namespace ranges { +template <typename _Out, typename _Tp> +using iota_result = ranges::out_value_result<_Out, _Tp>; + +struct __iota_fn { + template <input_or_output_iterator _Out, sentinel_for<_Out> _Sent, weakly_incrementable _Tp> + requires indirectly_writable<_Out, const _Tp&> + constexpr iota_result<_Out, _Tp> operator()(_Out __first, _Sent __last, _Tp __value) const { + while (__first != __last) { + *__first = std::as_const(__value); + ++__first; + ++__value; + } + return {std::move(__first), std::move(__value)}; + } + + template <weakly_incrementable _Tp, ranges::output_range<const _Tp&> _Range> + constexpr iota_result<ranges::borrowed_iterator_t<_Range>, _Tp> operator()(_Range&& __r, _Tp __value) const { + return (*this)(ranges::begin(__r), ranges::end(__r), std::move(__value)); ---------------- cjdb wrote:
I don't see why this would cause problems? https://github.com/llvm/llvm-project/pull/68494 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
