/*
|
Copyright 2017-2018 Glen Joseph Fernandes
|
(glenjofe@gmail.com)
|
|
Distributed under the Boost Software License,
|
Version 1.0. (See accompanying file LICENSE_1_0.txt
|
or copy at http://www.boost.org/LICENSE_1_0.txt)
|
*/
|
|
#ifndef BOOST_TT_DETAIL_DETECTOR_HPP_INCLUDED
|
#define BOOST_TT_DETAIL_DETECTOR_HPP_INCLUDED
|
|
#include <boost/type_traits/integral_constant.hpp>
|
#include <boost/type_traits/make_void.hpp>
|
|
namespace boost {
|
namespace detail {
|
|
template<class T>
|
using detector_t = typename boost::make_void<T>::type;
|
|
template<class Default, class, template<class...> class, class...>
|
struct detector {
|
using value_t = boost::false_type;
|
using type = Default;
|
};
|
|
template<class Default, template<class...> class Op, class... Args>
|
struct detector<Default, detector_t<Op<Args...> >, Op, Args...> {
|
using value_t = boost::true_type;
|
using type = Op<Args...>;
|
};
|
|
} /* detail */
|
} /* boost */
|
|
#endif
|