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-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
11
12 // constexpr iota_view(iterator first, see below last);
13
14 #include <ranges>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "types.h"
19
test()20 constexpr bool test() {
21 {
22 std::ranges::iota_view commonView(SomeInt(0), SomeInt(10));
23 std::ranges::iota_view<SomeInt, SomeInt> io(commonView.begin(), commonView.end());
24 assert(std::ranges::next(io.begin(), 10) == io.end());
25 }
26
27 {
28 std::ranges::iota_view unreachableSent(SomeInt(0));
29 std::ranges::iota_view<SomeInt> io(unreachableSent.begin(), std::unreachable_sentinel);
30 assert(std::ranges::next(io.begin(), 10) != io.end());
31 }
32
33 {
34 std::ranges::iota_view differentTypes(SomeInt(0), IntComparableWith(SomeInt(10)));
35 std::ranges::iota_view<SomeInt, IntComparableWith<SomeInt>> io(differentTypes.begin(), differentTypes.end());
36 assert(std::ranges::next(io.begin(), 10) == io.end());
37 }
38
39 return true;
40 }
41
main(int,char **)42 int main(int, char**) {
43 test();
44 static_assert(test());
45
46 return 0;
47 }
48
49