Atmosphere/stratosphere/libstratosphere/include/boost/callable_traits/remove_noexcept.hpp

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2.5 KiB
C++

/*
@file remove_noexcept
@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_REMOVE_NOEXCEPT_HPP
#define BOOST_CLBL_TRTS_REMOVE_NOEXCEPT_HPP
#include <boost/callable_traits/detail/core.hpp>
namespace boost { namespace callable_traits {
BOOST_CLBL_TRTS_DEFINE_SFINAE_ERROR_ORIGIN(remove_noexcept)
BOOST_CLBL_TRTS_SFINAE_MSG(remove_noexcept, cannot_remove_noexcept_from_this_type)
//[ remove_noexcept_hpp
/*`
[section:ref_remove_noexcept remove_noexcept]
[heading Header]
``#include <boost/callable_traits/remove_noexcept.hpp>``
[heading Definition]
*/
template<typename T>
using remove_noexcept_t = //see below
//<-
detail::try_but_fail_if_invalid<
typename detail::traits<T>::remove_noexcept,
cannot_remove_noexcept_from_this_type>;
namespace detail {
template<typename T, typename = std::false_type>
struct remove_noexcept_impl {};
template<typename T>
struct remove_noexcept_impl <T, typename std::is_same<
remove_noexcept_t<T>, detail::dummy>::type>
{
using type = remove_noexcept_t<T>;
};
}
//->
template<typename T>
struct remove_noexcept : detail::remove_noexcept_impl<T> {};
//<-
}} // namespace boost::callable_traits
//->
/*`
[heading Constraints]
* `T` must be one of the following:
* function type
* function pointer type
* function reference type
* member function pointer type
* If `T` is a pointer, it may not be cv/ref qualified
[heading Behavior]
* A substitution failure occurs if the constraints are violated.
* Removes the `noexcept` specifier from `T`, if present.
[heading Input/Output Examples]
[table
[[`T`] [`remove_noexcept_t<T>`]]
[[`int() const noexcept`] [`int() const`]]
[[`int(*)() noexcept`] [`int(*)()`]]
[[`int(&)() noexcept`] [`int(&)()`]]
[[`int(foo::*)() noexcept`] [`int(foo::*)()`]]
[[`int() const`] [`int() const`]]
[[`int(*)()`] [`int(*)()`]]
[[`int(&)()`] [`int(&)()`]]
[[`int`] [(substitution failure)]]
[[`int foo::*`] [(substitution failure)]]
[[`int (foo::* const)()`] [(substitution failure)]]
]
[heading Example Program]
[import ../example/remove_noexcept.cpp]
[remove_noexcept]
[endsect]
*/
//]
#endif // #ifndef BOOST_CLBL_TRTS_REMOVE_NOEXCEPT_HPP