1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// type_traits 11 12// is_abstract 13 14#include <type_traits> 15 16template <class T> 17void test_is_abstract() 18{ 19 static_assert( std::is_abstract<T>::value, ""); 20 static_assert( std::is_abstract<const T>::value, ""); 21 static_assert( std::is_abstract<volatile T>::value, ""); 22 static_assert( std::is_abstract<const volatile T>::value, ""); 23} 24 25template <class T> 26void test_is_not_abstract() 27{ 28 static_assert(!std::is_abstract<T>::value, ""); 29 static_assert(!std::is_abstract<const T>::value, ""); 30 static_assert(!std::is_abstract<volatile T>::value, ""); 31 static_assert(!std::is_abstract<const volatile T>::value, ""); 32} 33 34class Empty 35{ 36}; 37 38class NotEmpty 39{ 40 virtual ~NotEmpty(); 41}; 42 43union Union {}; 44 45struct bit_zero 46{ 47 int : 0; 48}; 49 50class Abstract 51{ 52 virtual ~Abstract() = 0; 53}; 54 55int main() 56{ 57 test_is_not_abstract<void>(); 58 test_is_not_abstract<int&>(); 59 test_is_not_abstract<int>(); 60 test_is_not_abstract<double>(); 61 test_is_not_abstract<int*>(); 62 test_is_not_abstract<const int*>(); 63 test_is_not_abstract<char[3]>(); 64 test_is_not_abstract<char[]>(); 65 test_is_not_abstract<Union>(); 66 test_is_not_abstract<Empty>(); 67 test_is_not_abstract<bit_zero>(); 68 test_is_not_abstract<NotEmpty>(); 69 70 test_is_abstract<Abstract>(); 71} 72