68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
|
/*!
|
||
|
|
@file
|
||
|
|
Defines macros for commonly used type traits.
|
||
|
|
|
||
|
|
@copyright Louis Dionne 2013-2016
|
||
|
|
Distributed under the Boost Software License, Version 1.0.
|
||
|
|
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef BOOST_HANA_DETAIL_INTRINSICS_HPP
|
||
|
|
#define BOOST_HANA_DETAIL_INTRINSICS_HPP
|
||
|
|
|
||
|
|
#include <boost/hana/config.hpp>
|
||
|
|
|
||
|
|
|
||
|
|
// We use intrinsics if they are available because it speeds up the
|
||
|
|
// compile-times.
|
||
|
|
#if defined(BOOST_HANA_CONFIG_CLANG)
|
||
|
|
# if __has_extension(is_empty)
|
||
|
|
# define BOOST_HANA_TT_IS_EMPTY(T) __is_empty(T)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if __has_extension(is_final)
|
||
|
|
# define BOOST_HANA_TT_IS_FINAL(T) __is_final(T)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
// TODO: Right now, this intrinsic is never used directly because of
|
||
|
|
// https://llvm.org/bugs/show_bug.cgi?id=24173
|
||
|
|
# if __has_extension(is_constructible) && false
|
||
|
|
# define BOOST_HANA_TT_IS_CONSTRUCTIBLE(...) __is_constructible(__VA_ARGS__)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if __has_extension(is_assignable)
|
||
|
|
# define BOOST_HANA_TT_IS_ASSIGNABLE(T, U) __is_assignable(T, U)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if __has_extension(is_convertible)
|
||
|
|
# define BOOST_HANA_TT_IS_CONVERTIBLE(T, U) __is_convertible(T, U)
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(BOOST_HANA_TT_IS_EMPTY)
|
||
|
|
# include <type_traits>
|
||
|
|
# define BOOST_HANA_TT_IS_EMPTY(T) ::std::is_empty<T>::value
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(BOOST_HANA_TT_IS_FINAL)
|
||
|
|
# include <type_traits>
|
||
|
|
# define BOOST_HANA_TT_IS_FINAL(T) ::std::is_final<T>::value
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(BOOST_HANA_TT_IS_CONSTRUCTIBLE)
|
||
|
|
# include <type_traits>
|
||
|
|
# define BOOST_HANA_TT_IS_CONSTRUCTIBLE(...) ::std::is_constructible<__VA_ARGS__>::value
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(BOOST_HANA_TT_IS_ASSIGNABLE)
|
||
|
|
# include <type_traits>
|
||
|
|
# define BOOST_HANA_TT_IS_ASSIGNABLE(T, U) ::std::is_assignable<T, U>::value
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(BOOST_HANA_TT_IS_CONVERTIBLE)
|
||
|
|
# include <type_traits>
|
||
|
|
# define BOOST_HANA_TT_IS_CONVERTIBLE(T, U) ::std::is_convertible<T, U>::value
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // !BOOST_HANA_DETAIL_INTRINSICS_HPP
|