/*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* Copyright (c) 2020 Andrey Semashev
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*/
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/*!
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* \file atomic/detail/classify.hpp
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*
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* This header contains type traits for type classification.
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*/
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#ifndef BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
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#define BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
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#include <boost/atomic/detail/config.hpp>
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#include <boost/atomic/detail/type_traits/is_integral.hpp>
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#include <boost/atomic/detail/type_traits/is_function.hpp>
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#include <boost/atomic/detail/type_traits/is_floating_point.hpp>
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#include <boost/atomic/detail/header.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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namespace atomics {
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namespace detail {
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template< typename T, bool IsFunction = atomics::detail::is_function< T >::value >
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struct classify_pointer
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{
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typedef void* type;
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};
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template< typename T >
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struct classify_pointer< T, true >
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{
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typedef void type;
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};
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template< typename T, bool IsInt = atomics::detail::is_integral< T >::value, bool IsFloat = atomics::detail::is_floating_point< T >::value >
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struct classify
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{
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typedef void type;
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};
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template< typename T >
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struct classify< T, true, false > { typedef int type; };
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#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
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template< typename T >
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struct classify< T, false, true > { typedef float type; };
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#endif
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template< typename T >
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struct classify< T*, false, false > { typedef typename classify_pointer< T >::type type; };
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template< >
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struct classify< void*, false, false > { typedef void type; };
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template< >
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struct classify< const void*, false, false > { typedef void type; };
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template< >
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struct classify< volatile void*, false, false > { typedef void type; };
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template< >
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struct classify< const volatile void*, false, false > { typedef void type; };
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template< typename T, typename U >
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struct classify< T U::*, false, false > { typedef void type; };
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} // namespace detail
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} // namespace atomics
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} // namespace boost
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#include <boost/atomic/detail/footer.hpp>
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#endif // BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
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