| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // UNSUPPORTED: libcpp-no-concepts |
| // UNSUPPORTED: libcpp-has-no-incomplete-ranges |
| |
| // class std::ranges::subrange; |
| |
| #include <ranges> |
| |
| #include "types.h" |
| #include <cassert> |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| // convertible-to-non-slicing cases: |
| // 1. Not convertible (fail) |
| // 2. Only one is a pointer (succeed) |
| // 3. Both are not pointers (succeed) |
| // 4. Pointer elements are different types (fail) |
| // 5. Pointer elements are same type (succeed) |
| |
| // !StoreSize ctor. |
| static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // Default case. |
| static_assert(!std::is_constructible_v<ForwardSubrange, Empty, ForwardIter>); // 1. |
| static_assert( std::is_constructible_v<ConvertibleForwardSubrange, ConvertibleForwardIter, int*>); // 2. |
| static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // 3. (Same as default case.) |
| // 4. and 5. must be sized. |
| |
| constexpr bool test() { |
| ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8)); |
| assert(a.begin().base() == globalBuff); |
| assert(a.end().base() == globalBuff + 8); |
| |
| ConvertibleForwardSubrange b(ConvertibleForwardIter(globalBuff), globalBuff + 8); |
| assert(b.begin() == globalBuff); |
| assert(b.end() == globalBuff + 8); |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| static_assert(test()); |
| |
| return 0; |
| } |