31 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710 11// template<class T>12// using iterator_t = decltype(ranges::begin(declval<T&>()));13 14#include <ranges>15 16#include <concepts>17 18#include "test_range.h"19 20 21 22static_assert(std::same_as<std::ranges::iterator_t<test_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);23static_assert(std::same_as<std::ranges::iterator_t<test_range<cpp17_input_iterator> const>, cpp17_input_iterator<int const*> >);24 25static_assert(std::same_as<std::ranges::iterator_t<test_non_const_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);26 27static_assert(std::same_as<std::ranges::iterator_t<test_common_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);28static_assert(std::same_as<std::ranges::iterator_t<test_common_range<cpp17_input_iterator> const>, cpp17_input_iterator<int const*> >);29 30static_assert(std::same_as<std::ranges::iterator_t<test_non_const_common_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);31