================ @@ -0,0 +1,333 @@ +// -*- 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___RANGES_ENUMERATE_VIEW_H +#define _LIBCPP___RANGES_ENUMERATE_VIEW_H + +#include <__concepts/convertible_to.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/distance.h> +#include <__iterator/iter_move.h> +#include <__iterator/iterator_traits.h> +#include <__ranges/access.h> +#include <__ranges/all.h> +#include <__ranges/concepts.h> +#include <__ranges/enable_borrowed_range.h> +#include <__ranges/range_adaptor.h> +#include <__ranges/size.h> +#include <__ranges/view_interface.h> +#include <__type_traits/maybe_const.h> +#include <__utility/forward.h> +#include <__utility/move.h> +#include <tuple> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER >= 23 + +namespace ranges { + +// [concept.object] + +template <class _Rp> +concept __range_with_movable_references = + ranges::input_range<_Rp> && std::move_constructible<ranges::range_reference_t<_Rp>> && + std::move_constructible<ranges::range_rvalue_reference_t<_Rp>>; + +// [range.enumerate.view] + +template <view _View> + requires __range_with_movable_references<_View> +class enumerate_view : public view_interface<enumerate_view<_View>> { + _View __base_ = _View(); + + // [range.enumerate.iterator] + template <bool _Const> + class __iterator; + + // [range.enumerate.sentinel] + template <bool _Const> + class __sentinel; + + template <bool _AnyConst> + _LIBCPP_HIDE_FROM_ABI static constexpr decltype(auto) __get_current(const __iterator<_AnyConst>& __iter) { + return (__iter.__current_); + } ---------------- cjdb wrote:
I'm not sure this function is necessary. https://github.com/llvm/llvm-project/pull/73617 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
