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 #include <tuple>
21 #include <utility>
22
23 static_assert( std::is_convertible_v<ForwardSubrange, std::pair<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>&>);
26 static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter, ForwardIter>>);
27 static_assert( std::is_convertible_v<ConvertibleForwardSubrange, std::tuple<ConvertibleForwardIter, int*>>);
28 static_assert(!std::is_convertible_v<SizedIntPtrSubrange, std::tuple<long*, int*>>);
29 static_assert( std::is_convertible_v<SizedIntPtrSubrange, std::tuple<int*, int*>>);
30
test()31 constexpr bool test() {
32 ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8));
33 std::pair<ForwardIter, ForwardIter> aPair = a;
34 assert(base(aPair.first) == globalBuff);
35 assert(base(aPair.second) == globalBuff + 8);
36 std::tuple<ForwardIter, ForwardIter> aTuple = a;
37 assert(base(std::get<0>(aTuple)) == globalBuff);
38 assert(base(std::get<1>(aTuple)) == globalBuff + 8);
39
40 return true;
41 }
42
main(int,char **)43 int main(int, char**) {
44 test();
45 static_assert(test());
46
47 return 0;
48 }
49