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 // friend constexpr decltype(auto) iter_move(const iterator& i)
13 // noexcept(noexcept(invoke(i.parent_->fun_, *i.current_)))
14
15 #include <ranges>
16
17 #include "test_macros.h"
18 #include "../types.h"
19
test()20 constexpr bool test() {
21 int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
22
23 {
24 std::ranges::transform_view transformView(MoveOnlyView{buff}, PlusOneMutable{});
25 auto iter = transformView.begin();
26 ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(iter));
27
28 assert(std::ranges::iter_move(iter) == 1);
29 assert(std::ranges::iter_move(iter + 2) == 3);
30
31 ASSERT_SAME_TYPE(int, decltype(std::ranges::iter_move(iter)));
32 ASSERT_SAME_TYPE(int, decltype(std::ranges::iter_move(std::move(iter))));
33 }
34
35 {
36 LIBCPP_ASSERT_NOEXCEPT(std::ranges::iter_move(
37 std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneNoexcept>>&>()));
38 ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(
39 std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneMutable>>&>()));
40 }
41
42 return true;
43 }
44
main(int,char **)45 int main(int, char**) {
46 test();
47 static_assert(test());
48
49 return 0;
50 }
51