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: libcpp-has-no-incomplete-ranges 12 13 // class std::ranges::subrange; 14 15 #include <ranges> 16 17 #include "types.h" 18 #include <cassert> 19 #include "test_macros.h" 20 #include "test_iterators.h" 21 #include <tuple> 22 #include <utility> 23 24 static_assert( std::is_convertible_v<ForwardSubrange, std::pair<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>&>); 27 static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter, ForwardIter>>); 28 static_assert( std::is_convertible_v<ConvertibleForwardSubrange, std::tuple<ConvertibleForwardIter, int*>>); 29 static_assert(!std::is_convertible_v<SizedIntPtrSubrange, std::tuple<long*, int*>>); 30 static_assert( std::is_convertible_v<SizedIntPtrSubrange, std::tuple<int*, int*>>); 31 32 constexpr bool test() { 33 ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8)); 34 std::pair<ForwardIter, ForwardIter> aPair = a; 35 assert(aPair.first.base() == globalBuff); 36 assert(aPair.second.base() == globalBuff + 8); 37 std::tuple<ForwardIter, ForwardIter> aTuple = a; 38 assert(get<0>(aTuple).base() == globalBuff); 39 assert(get<1>(aTuple).base() == globalBuff + 8); 40 41 return true; 42 } 43 44 int main(int, char**) { 45 test(); 46 static_assert(test()); 47 48 return 0; 49 } 50