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