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 // transform_view::<iterator>::base
13
14 #include <ranges>
15
16 #include "test_macros.h"
17 #include "../types.h"
18
test()19 constexpr bool test() {
20 {
21 using TransformView = std::ranges::transform_view<MoveOnlyView, PlusOneMutable>;
22 TransformView tv;
23 auto it = tv.begin();
24 using It = decltype(it);
25 ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), int* const&);
26 ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), int*);
27 ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), int* const&);
28 ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), int* const&);
29 ASSERT_NOEXCEPT(it.base());
30 assert(base(it.base()) == globalBuff);
31 assert(base(std::move(it).base()) == globalBuff);
32 }
33 {
34 using TransformView = std::ranges::transform_view<InputView, PlusOneMutable>;
35 TransformView tv;
36 auto it = tv.begin();
37 using It = decltype(it);
38 ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), const cpp20_input_iterator<int*>&);
39 ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), cpp20_input_iterator<int*>);
40 ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), const cpp20_input_iterator<int*>&);
41 ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), const cpp20_input_iterator<int*>&);
42 ASSERT_NOEXCEPT(it.base());
43 assert(base(it.base()) == globalBuff);
44 assert(base(std::move(it).base()) == globalBuff);
45 }
46 return true;
47 }
48
main(int,char **)49 int main(int, char**) {
50 test();
51 static_assert(test());
52
53 return 0;
54 }
55