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115 lines
3.0 KiB
C++
115 lines
3.0 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_scalar
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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_scalar()
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{
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static_assert( std::is_scalar<T>::value, "");
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static_assert( std::is_scalar<const T>::value, "");
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static_assert( std::is_scalar<volatile T>::value, "");
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static_assert( std::is_scalar<const volatile T>::value, "");
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#if TEST_STD_VER > 14
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static_assert( std::is_scalar_v<T>, "");
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static_assert( std::is_scalar_v<const T>, "");
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static_assert( std::is_scalar_v<volatile T>, "");
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static_assert( std::is_scalar_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_scalar()
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{
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static_assert(!std::is_scalar<T>::value, "");
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static_assert(!std::is_scalar<const T>::value, "");
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static_assert(!std::is_scalar<volatile T>::value, "");
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static_assert(!std::is_scalar<const volatile T>::value, "");
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#if TEST_STD_VER > 14
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static_assert(!std::is_scalar_v<T>, "");
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static_assert(!std::is_scalar_v<const T>, "");
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static_assert(!std::is_scalar_v<volatile T>, "");
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static_assert(!std::is_scalar_v<const volatile T>, "");
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#endif
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}
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class incomplete_type;
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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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typedef void (*FunctionPtr)();
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int main()
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{
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// Arithmetic types (3.9.1), enumeration types, pointer types, pointer to member types (3.9.2),
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// std::nullptr_t, and cv-qualified versions of these types (3.9.3)
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// are collectively called scalar types.
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test_is_scalar<std::nullptr_t>();
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test_is_scalar<short>();
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test_is_scalar<unsigned short>();
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test_is_scalar<int>();
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test_is_scalar<unsigned int>();
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test_is_scalar<long>();
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test_is_scalar<unsigned long>();
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test_is_scalar<bool>();
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test_is_scalar<char>();
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test_is_scalar<signed char>();
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test_is_scalar<unsigned char>();
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test_is_scalar<wchar_t>();
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test_is_scalar<double>();
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test_is_scalar<int*>();
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test_is_scalar<const int*>();
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test_is_scalar<int Empty::*>();
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test_is_scalar<void (Empty::*)(int)>();
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test_is_scalar<Enum>();
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test_is_scalar<FunctionPtr>();
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test_is_not_scalar<void>();
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test_is_not_scalar<int&>();
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test_is_not_scalar<int&&>();
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test_is_not_scalar<char[3]>();
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test_is_not_scalar<char[]>();
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test_is_not_scalar<Union>();
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test_is_not_scalar<Empty>();
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test_is_not_scalar<incomplete_type>();
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test_is_not_scalar<bit_zero>();
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test_is_not_scalar<NotEmpty>();
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test_is_not_scalar<Abstract>();
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test_is_not_scalar<int(int)>();
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}
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