| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // is_enum |
| |
| #include <type_traits> |
| #include <cstddef> // for std::nullptr_t |
| #include "test_macros.h" |
| |
| template <class T> |
| void test_is_enum() |
| { |
| static_assert( std::is_enum<T>::value, ""); |
| static_assert( std::is_enum<const T>::value, ""); |
| static_assert( std::is_enum<volatile T>::value, ""); |
| static_assert( std::is_enum<const volatile T>::value, ""); |
| #if TEST_STD_VER > 14 |
| static_assert( std::is_enum_v<T>, ""); |
| static_assert( std::is_enum_v<const T>, ""); |
| static_assert( std::is_enum_v<volatile T>, ""); |
| static_assert( std::is_enum_v<const volatile T>, ""); |
| #endif |
| } |
| |
| template <class T> |
| void test_is_not_enum() |
| { |
| static_assert(!std::is_enum<T>::value, ""); |
| static_assert(!std::is_enum<const T>::value, ""); |
| static_assert(!std::is_enum<volatile T>::value, ""); |
| static_assert(!std::is_enum<const volatile T>::value, ""); |
| #if TEST_STD_VER > 14 |
| static_assert(!std::is_enum_v<T>, ""); |
| static_assert(!std::is_enum_v<const T>, ""); |
| static_assert(!std::is_enum_v<volatile T>, ""); |
| static_assert(!std::is_enum_v<const volatile T>, ""); |
| #endif |
| } |
| |
| class Empty |
| { |
| }; |
| |
| class NotEmpty |
| { |
| virtual ~NotEmpty(); |
| }; |
| |
| union Union {}; |
| |
| struct bit_zero |
| { |
| int : 0; |
| }; |
| |
| class Abstract |
| { |
| virtual ~Abstract() = 0; |
| }; |
| |
| enum Enum {zero, one}; |
| struct incomplete_type; |
| |
| typedef void (*FunctionPtr)(); |
| |
| int main() |
| { |
| test_is_enum<Enum>(); |
| |
| test_is_not_enum<std::nullptr_t>(); |
| test_is_not_enum<void>(); |
| test_is_not_enum<int>(); |
| test_is_not_enum<int&>(); |
| test_is_not_enum<int&&>(); |
| test_is_not_enum<int*>(); |
| test_is_not_enum<double>(); |
| test_is_not_enum<const int*>(); |
| test_is_not_enum<char[3]>(); |
| test_is_not_enum<char[]>(); |
| test_is_not_enum<Union>(); |
| test_is_not_enum<Empty>(); |
| test_is_not_enum<bit_zero>(); |
| test_is_not_enum<NotEmpty>(); |
| test_is_not_enum<Abstract>(); |
| test_is_not_enum<FunctionPtr>(); |
| test_is_not_enum<incomplete_type>(); |
| } |