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 18template <class T> 19void 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 33template <class T> 34void 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 48class incomplete_type; 49 50class Empty 51{ 52}; 53 54class NotEmpty 55{ 56 virtual ~NotEmpty(); 57}; 58 59union Union {}; 60 61struct bit_zero 62{ 63 int : 0; 64}; 65 66class Abstract 67{ 68 virtual ~Abstract() = 0; 69}; 70 71enum Enum {zero, one}; 72 73typedef void (*FunctionPtr)(); 74 75 76int 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