/*
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Copyright 2019 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt
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or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_TT_COPY_REFERENCE_HPP_INCLUDED
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#define BOOST_TT_COPY_REFERENCE_HPP_INCLUDED
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#include <boost/type_traits/add_lvalue_reference.hpp>
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#include <boost/type_traits/add_rvalue_reference.hpp>
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#include <boost/type_traits/is_lvalue_reference.hpp>
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#include <boost/type_traits/is_rvalue_reference.hpp>
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#include <boost/type_traits/conditional.hpp>
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namespace boost {
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template<class T, class U>
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struct copy_reference {
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typedef typename conditional<is_rvalue_reference<U>::value,
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typename add_rvalue_reference<T>::type,
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typename conditional<is_lvalue_reference<U>::value,
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typename add_lvalue_reference<T>::type, T>::type>::type type;
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};
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#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
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template<class T, class U>
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using copy_reference_t = typename copy_reference<T, U>::type;
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#endif
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} /* boost */
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#endif
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