1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
//===----------------------------------------------------------------------===//
//
// 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
// constexpr iterator begin() const;
#include <ranges>
#include <cassert>
#include <concepts>
constexpr bool test() {
// Test unbound && non-const view
{
std::ranges::repeat_view<int> rv(0);
std::same_as<std::ranges::iterator_t<decltype(rv)>> decltype(auto) iter = rv.begin();
assert(*iter == 0);
}
// Test unbound && const view
{
const std::ranges::repeat_view<int> rv(0);
std::same_as<std::ranges::iterator_t<decltype(rv)>> decltype(auto) iter = rv.begin();
assert(*iter == 0);
}
// Test bound && non-const view
{
std::ranges::repeat_view<int, int> rv(1024, 10);
std::same_as<std::ranges::iterator_t<decltype(rv)>> decltype(auto) iter = rv.begin();
assert(*iter == 1024);
}
// Test bound && const view
{
const std::ranges::repeat_view<int, long long> rv(1024, 10);
std::same_as<std::ranges::iterator_t<decltype(rv)>> decltype(auto) iter = rv.begin();
assert(*iter == 1024);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
|
