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
11 // class std::ranges::subrange;
12
13 #include <ranges>
14
15 #include "types.h"
16 #include <cassert>
17 #include "test_macros.h"
18 #include "test_iterators.h"
19
20 static_assert( std::is_constructible_v<ForwardSubrange, ForwardBorrowedRange>); // Default case.
21 static_assert(!std::is_constructible_v<ForwardSubrange, ForwardRange>); // Not borrowed.
22 // Iter convertible to sentinel (pointer) type.
23 static_assert( std::is_constructible_v<ConvertibleForwardSubrange, ConvertibleForwardBorrowedRange>);
24 // Where neither iter or sentinel are pointers, but they are different.
25 static_assert( std::is_constructible_v<DifferentSentinelSubrange, ForwardBorrowedRangeDifferentSentinel>);
26 static_assert( std::is_constructible_v<DifferentSentinelWithSizeMemberSubrange, DifferentSentinelWithSizeMember>);
27
test()28 constexpr bool test() {
29 ForwardSubrange a{ForwardBorrowedRange()};
30 assert(base(a.begin()) == globalBuff);
31 assert(base(a.end()) == globalBuff + 8);
32
33 ConvertibleForwardSubrange b{ConvertibleForwardBorrowedRange()};
34 assert(b.begin() == globalBuff);
35 assert(b.end() == globalBuff + 8);
36
37 DifferentSentinelSubrange c{ForwardBorrowedRangeDifferentSentinel()};
38 assert(base(c.begin()) == globalBuff);
39 assert(c.end().value == globalBuff + 8);
40
41 return true;
42 }
43
main(int,char **)44 int main(int, char**) {
45 test();
46 static_assert(test());
47
48 return 0;
49 }
50