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-no-concepts
11 // UNSUPPORTED: gcc-10
12 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
13
14 // constexpr sentinel<false> end();
15 // constexpr iterator<false> end() requires common_range<V>;
16 // constexpr sentinel<true> end() const
17 // requires range<const V> &&
18 // regular_invocable<const F&, range_reference_t<const V>>;
19 // constexpr iterator<true> end() const
20 // requires common_range<const V> &&
21 // regular_invocable<const F&, range_reference_t<const V>>;
22
23 #include <ranges>
24
25 #include "test_macros.h"
26 #include "types.h"
27
28 template<class T>
29 concept EndInvocable = requires(T t) { t.end(); };
30
31 template<class T>
32 concept EndIsIter = requires(T t) { ++t.end(); };
33
test()34 constexpr bool test() {
35 {
36 std::ranges::transform_view transformView(ContiguousView{}, Increment{});
37 assert(transformView.end().base() == globalBuff + 8);
38 }
39
40 {
41 std::ranges::transform_view transformView(ForwardView{}, Increment{});
42 assert(transformView.end().base().base() == globalBuff + 8);
43 }
44
45 {
46 std::ranges::transform_view transformView(InputView{}, Increment{});
47 assert(transformView.end().base() == globalBuff + 8);
48 }
49
50 {
51 const std::ranges::transform_view transformView(ContiguousView{}, IncrementConst{});
52 assert(transformView.end().base() == globalBuff + 8);
53 }
54
55 static_assert(!EndInvocable<const std::ranges::transform_view<ContiguousView, Increment>>);
56 static_assert( EndInvocable< std::ranges::transform_view<ContiguousView, Increment>>);
57 static_assert( EndInvocable<const std::ranges::transform_view<ContiguousView, IncrementConst>>);
58 static_assert(!EndInvocable<const std::ranges::transform_view<InputView, Increment>>);
59 static_assert( EndInvocable< std::ranges::transform_view<InputView, Increment>>);
60 static_assert( EndInvocable<const std::ranges::transform_view<InputView, IncrementConst>>);
61
62 static_assert(!EndIsIter<const std::ranges::transform_view<InputView, IncrementConst>>);
63 static_assert(!EndIsIter< std::ranges::transform_view<InputView, Increment>>);
64 static_assert( EndIsIter<const std::ranges::transform_view<ContiguousView, IncrementConst>>);
65 static_assert( EndIsIter< std::ranges::transform_view<ContiguousView, Increment>>);
66
67 return true;
68 }
69
main(int,char **)70 int main(int, char**) {
71 test();
72 static_assert(test());
73
74 return 0;
75 }
76