53 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 W, class Bound>12// requires (!is-integer-like<W> || !is-integer-like<Bound> ||13// (is-signed-integer-like<W> == is-signed-integer-like<Bound>))14// iota_view(W, Bound) -> iota_view<W, Bound>;15 16#include <ranges>17#include <cassert>18#include <concepts>19 20#include "test_macros.h"21#include "types.h"22 23template<class T, class U>24concept CanDeduce = requires(const T& t, const U& u) {25 std::ranges::iota_view(t, u);26};27 28void test() {29 static_assert(std::same_as<30 decltype(std::ranges::iota_view(0, 0)),31 std::ranges::iota_view<int, int>32 >);33 34 static_assert(std::same_as<35 decltype(std::ranges::iota_view(0)),36 std::ranges::iota_view<int, std::unreachable_sentinel_t>37 >);38 39 static_assert(std::same_as<40 decltype(std::ranges::iota_view(0, std::unreachable_sentinel)),41 std::ranges::iota_view<int, std::unreachable_sentinel_t>42 >);43 44 static_assert(std::same_as<45 decltype(std::ranges::iota_view(0, IntComparableWith(0))),46 std::ranges::iota_view<int, IntComparableWith<int>>47 >);48 49 static_assert( CanDeduce<int, int>);50 static_assert(!CanDeduce<int, unsigned>);51 static_assert(!CanDeduce<unsigned, int>);52}53