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 #include <tuple>
20 #include <utility>
21
22 static_assert( std::is_convertible_v<ForwardSubrange, std::pair<ForwardIter, ForwardIter>>);
23 static_assert( std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter>>);
24 static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter>&>);
25 static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter, ForwardIter>>);
26 static_assert( std::is_convertible_v<ConvertibleForwardSubrange, std::tuple<ConvertibleForwardIter, int*>>);
27 static_assert(!std::is_convertible_v<SizedIntPtrSubrange, std::tuple<long*, int*>>);
28 static_assert( std::is_convertible_v<SizedIntPtrSubrange, std::tuple<int*, int*>>);
29
test()30 constexpr bool test() {
31 ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8));
32 std::pair<ForwardIter, ForwardIter> aPair = a;
33 assert(base(aPair.first) == globalBuff);
34 assert(base(aPair.second) == globalBuff + 8);
35 std::tuple<ForwardIter, ForwardIter> aTuple = a;
36 assert(base(std::get<0>(aTuple)) == globalBuff);
37 assert(base(std::get<1>(aTuple)) == globalBuff + 8);
38
39 return true;
40 }
41
main(int,char **)42 int main(int, char**) {
43 test();
44 static_assert(test());
45
46 return 0;
47 }
48