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_scalar 13 14 #include <type_traits> 15 #include <cstddef> // for std::nullptr_t 16 #include "test_macros.h" 17 18 template <class T> 19 void test_is_scalar() 20 { 21 static_assert( std::is_scalar<T>::value, ""); 22 static_assert( std::is_scalar<const T>::value, ""); 23 static_assert( std::is_scalar<volatile T>::value, ""); 24 static_assert( std::is_scalar<const volatile T>::value, ""); 25 #if TEST_STD_VER > 14 26 static_assert( std::is_scalar_v<T>, ""); 27 static_assert( std::is_scalar_v<const T>, ""); 28 static_assert( std::is_scalar_v<volatile T>, ""); 29 static_assert( std::is_scalar_v<const volatile T>, ""); 30 #endif 31 } 32 33 template <class T> 34 void test_is_not_scalar() 35 { 36 static_assert(!std::is_scalar<T>::value, ""); 37 static_assert(!std::is_scalar<const T>::value, ""); 38 static_assert(!std::is_scalar<volatile T>::value, ""); 39 static_assert(!std::is_scalar<const volatile T>::value, ""); 40 #if TEST_STD_VER > 14 41 static_assert(!std::is_scalar_v<T>, ""); 42 static_assert(!std::is_scalar_v<const T>, ""); 43 static_assert(!std::is_scalar_v<volatile T>, ""); 44 static_assert(!std::is_scalar_v<const volatile T>, ""); 45 #endif 46 } 47 48 class incomplete_type; 49 50 class Empty 51 { 52 }; 53 54 class NotEmpty 55 { 56 virtual ~NotEmpty(); 57 }; 58 59 union Union {}; 60 61 struct bit_zero 62 { 63 int : 0; 64 }; 65 66 class Abstract 67 { 68 virtual ~Abstract() = 0; 69 }; 70 71 enum Enum {zero, one}; 72 73 typedef void (*FunctionPtr)(); 74 75 76 int main() 77 { 78 // Arithmetic types (3.9.1), enumeration types, pointer types, pointer to member types (3.9.2), 79 // std::nullptr_t, and cv-qualified versions of these types (3.9.3) 80 // are collectively called scalar types. 81 82 test_is_scalar<std::nullptr_t>(); 83 test_is_scalar<short>(); 84 test_is_scalar<unsigned short>(); 85 test_is_scalar<int>(); 86 test_is_scalar<unsigned int>(); 87 test_is_scalar<long>(); 88 test_is_scalar<unsigned long>(); 89 test_is_scalar<bool>(); 90 test_is_scalar<char>(); 91 test_is_scalar<signed char>(); 92 test_is_scalar<unsigned char>(); 93 test_is_scalar<wchar_t>(); 94 test_is_scalar<double>(); 95 test_is_scalar<int*>(); 96 test_is_scalar<const int*>(); 97 test_is_scalar<int Empty::*>(); 98 test_is_scalar<void (Empty::*)(int)>(); 99 test_is_scalar<Enum>(); 100 test_is_scalar<FunctionPtr>(); 101 102 test_is_not_scalar<void>(); 103 test_is_not_scalar<int&>(); 104 test_is_not_scalar<int&&>(); 105 test_is_not_scalar<char[3]>(); 106 test_is_not_scalar<char[]>(); 107 test_is_not_scalar<Union>(); 108 test_is_not_scalar<Empty>(); 109 test_is_not_scalar<incomplete_type>(); 110 test_is_not_scalar<bit_zero>(); 111 test_is_not_scalar<NotEmpty>(); 112 test_is_not_scalar<Abstract>(); 113 test_is_not_scalar<int(int)>(); 114 } 115
