Howard Hinnant | c52f43e | 2010-08-22 00:59:46 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Howard Hinnant | b64f8b0 | 2010-11-16 22:09:02 +0000 | [diff] [blame] | 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
Howard Hinnant | c52f43e | 2010-08-22 00:59:46 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | // type_traits |
| 11 | |
| 12 | // is_base_of |
| 13 | |
| 14 | #include <type_traits> |
| 15 | |
| 16 | template <class T, class U> |
| 17 | void test_is_base_of() |
| 18 | { |
| 19 | static_assert((std::is_base_of<T, U>::value), ""); |
| 20 | static_assert((std::is_base_of<const T, U>::value), ""); |
| 21 | static_assert((std::is_base_of<T, const U>::value), ""); |
| 22 | static_assert((std::is_base_of<const T, const U>::value), ""); |
| 23 | } |
| 24 | |
| 25 | template <class T, class U> |
| 26 | void test_is_not_base_of() |
| 27 | { |
| 28 | static_assert((!std::is_base_of<T, U>::value), ""); |
| 29 | } |
| 30 | |
| 31 | struct B {}; |
| 32 | struct B1 : B {}; |
| 33 | struct B2 : B {}; |
| 34 | struct D : private B1, private B2 {}; |
| 35 | |
| 36 | int main() |
| 37 | { |
| 38 | test_is_base_of<B, D>(); |
| 39 | test_is_base_of<B1, D>(); |
| 40 | test_is_base_of<B2, D>(); |
| 41 | test_is_base_of<B, B1>(); |
| 42 | test_is_base_of<B, B2>(); |
| 43 | test_is_base_of<B, B>(); |
| 44 | |
| 45 | test_is_not_base_of<D, B>(); |
| 46 | test_is_not_base_of<B&, D&>(); |
| 47 | test_is_not_base_of<B[3], D[3]>(); |
| 48 | test_is_not_base_of<int, int>(); |
Howard Hinnant | c52f43e | 2010-08-22 00:59:46 +0000 | [diff] [blame] | 49 | } |