| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // UNSUPPORTED: libcpp-no-concepts |
| // UNSUPPORTED: libcpp-has-no-incomplete-ranges |
| |
| // template<class W, class Bound> |
| // requires (!is-integer-like<W> || !is-integer-like<Bound> || |
| // (is-signed-integer-like<W> == is-signed-integer-like<Bound>)) |
| // iota_view(W, Bound) -> iota_view<W, Bound>; |
| |
| #include <ranges> |
| #include <cassert> |
| #include <concepts> |
| |
| #include "test_macros.h" |
| #include "types.h" |
| |
| template<class T, class U> |
| concept CanDeduce = requires(const T& t, const U& u) { |
| std::ranges::iota_view(t, u); |
| }; |
| |
| void test() { |
| static_assert(std::same_as< |
| decltype(std::ranges::iota_view(0, 0)), |
| std::ranges::iota_view<int, int> |
| >); |
| |
| static_assert(std::same_as< |
| decltype(std::ranges::iota_view(0)), |
| std::ranges::iota_view<int, std::unreachable_sentinel_t> |
| >); |
| |
| static_assert(std::same_as< |
| decltype(std::ranges::iota_view(0, std::unreachable_sentinel)), |
| std::ranges::iota_view<int, std::unreachable_sentinel_t> |
| >); |
| |
| static_assert(std::same_as< |
| decltype(std::ranges::iota_view(0, IntComparableWith(0))), |
| std::ranges::iota_view<int, IntComparableWith<int>> |
| >); |
| |
| static_assert( CanDeduce<int, int>); |
| static_assert(!CanDeduce<int, unsigned>); |
| static_assert(!CanDeduce<unsigned, int>); |
| } |