mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-23 12:22:08 +00:00
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
/*
|
|
|
|
@Copyright Barrett Adair 2015-2017
|
|
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_CLBL_TRTS_class_of_HPP
|
|
#define BOOST_CLBL_TRTS_class_of_HPP
|
|
|
|
#include <boost/callable_traits/detail/core.hpp>
|
|
|
|
namespace boost { namespace callable_traits {
|
|
|
|
//[ class_of_hpp
|
|
/*`
|
|
[section:ref_class_of class_of]
|
|
[heading Header]
|
|
``#include <boost/callable_traits/class_of.hpp>``
|
|
[heading Definition]
|
|
*/
|
|
|
|
template<typename T>
|
|
using class_of_t = //see below
|
|
//<-
|
|
detail::try_but_fail_if_invalid<
|
|
typename detail::traits<detail::shallow_decay<T>>::class_type,
|
|
type_is_not_a_member_pointer>;
|
|
|
|
namespace detail {
|
|
|
|
template<typename T, typename = std::false_type>
|
|
struct class_of_impl {};
|
|
|
|
template<typename T>
|
|
struct class_of_impl <T, typename std::is_same<
|
|
class_of_t<T>, detail::dummy>::type>
|
|
{
|
|
using type = class_of_t<T>;
|
|
};
|
|
}
|
|
|
|
//->
|
|
|
|
template<typename T>
|
|
struct class_of : detail::class_of_impl<T> {};
|
|
|
|
//<-
|
|
}} // namespace boost::callable_traits
|
|
//->
|
|
|
|
/*`
|
|
[heading Constraints]
|
|
* `T` must be a member pointer
|
|
|
|
[heading Behavior]
|
|
* A substitution failure occurs if the constraints are violated.
|
|
* The aliased type is the parent class of the member. In other words, if `T` is expanded to `U C::*`, the aliased type is `C`.
|
|
|
|
[heading Input/Output Examples]
|
|
[table
|
|
[[`T`] [`class_of_t<T>`]]
|
|
[[`int foo::*`] [`foo`]]
|
|
[[`void(foo::* const &)() const`] [`foo`]]
|
|
]
|
|
|
|
[heading Example Program]
|
|
[import ../example/class_of.cpp]
|
|
[class_of]
|
|
[endsect]
|
|
*/
|
|
//]
|
|
|
|
#endif // #ifndef BOOST_CLBL_TRTS_class_of_HPP
|