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