================ @@ -0,0 +1,96 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 + +// <ranges> + +// class enumerate_view + +// class enumerate_view::iterator + +// friend constexpr bool operator==(const iterator& x, const iterator& y) noexcept; + +#include <cassert> +#include <ranges> + +#include "test_iterators.h" +#include "../types.h" +// #include "../types_iterators.h" + +// template <bool Const> +// struct Iterator { +// using value_type = int +// using difference_type = std::std::ptrdiff_t; +// using iterator_concept = std::input_iterator_tag; + +// constexpr decltype(auto) operator*() const { return *it_; } +// constexpr Iterator& operator++() { +// ++it_; + +// return *this; +// } +// constexpr void operator++(int) { ++it_; } + +// std::tuple<std::ptrdiff_t, int>* it_; +// }; + +// template <bool Const> +// struct Sentinel { +// constexpr bool operator==(const Iterator<Const>& i) const { return i.it_ == end_; } + +// std::tuple<std::ptrdiff_t, int>* end_; +// }; + +// template <bool Const> +// struct CrossComparableSentinel { +// template <bool C> +// constexpr bool operator==(const Iterator<C>& i) const { +// return i.it_ == end_; +// } + +// std::tuple<std::ptrdiff_t, int>* end_; +// }; + +constexpr bool test() { + int buff[] = {0, 1, 2, 3, 5}; + { + using View = std::ranges::enumerate_view<RangeView>; + RangeView const range(buff, buff + 5); + + std::same_as<View> decltype(auto) ev = std::views::enumerate(range); + + auto it1 = ev.begin(); + auto it2 = it1 + 5; + + assert(it1 == it1); + ASSERT_NOEXCEPT(it1 == it1); + assert(it1 != it2); + ASSERT_NOEXCEPT(it1 != it2); + assert(it2 != it1); + ASSERT_NOEXCEPT(it2 != it1); + assert(it2 == ev.end()); + assert(ev.end() == it2); + + for (std::size_t index = 0; index != 5; ++index) { + ++it1; + } ---------------- cjdb wrote:
Please hand-roll. 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
