90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
/*
|
|
* 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)
|
|
*
|
|
* Copyright (c) 2020-2025 Andrey Semashev
|
|
*/
|
|
/*!
|
|
* \file atomic/detail/classify.hpp
|
|
*
|
|
* This header contains type traits for type classification.
|
|
*/
|
|
|
|
#ifndef BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
|
|
#define BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
|
|
|
|
#include <type_traits>
|
|
#include <boost/atomic/detail/config.hpp>
|
|
#include <boost/atomic/detail/type_traits/is_integral.hpp>
|
|
#include <boost/atomic/detail/type_traits/is_floating_point.hpp>
|
|
#include <boost/atomic/detail/header.hpp>
|
|
|
|
#ifdef BOOST_HAS_PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
|
|
namespace boost {
|
|
namespace atomics {
|
|
namespace detail {
|
|
|
|
template< typename T, bool IsFunction = std::is_function< T >::value >
|
|
struct classify_pointer
|
|
{
|
|
using type = void*;
|
|
};
|
|
|
|
template< typename T >
|
|
struct classify_pointer< T, true >
|
|
{
|
|
using type = void;
|
|
};
|
|
|
|
template<
|
|
typename T,
|
|
bool IsInt = atomics::detail::is_integral< T >::value,
|
|
bool IsFloat = atomics::detail::is_floating_point< T >::value,
|
|
bool IsEnum = std::is_enum< T >::value
|
|
>
|
|
struct classify
|
|
{
|
|
using type = void;
|
|
};
|
|
|
|
template< typename T >
|
|
struct classify< T, true, false, false > { using type = int; };
|
|
|
|
#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
|
|
template< typename T >
|
|
struct classify< T, false, true, false > { using type = float; };
|
|
#endif
|
|
|
|
template< typename T >
|
|
struct classify< T, false, false, true > { using type = const int; };
|
|
|
|
template< typename T >
|
|
struct classify< T*, false, false, false > { using type = typename classify_pointer< T >::type; };
|
|
|
|
template< >
|
|
struct classify< void*, false, false, false > { using type = void; };
|
|
|
|
template< >
|
|
struct classify< const void*, false, false, false > { using type = void; };
|
|
|
|
template< >
|
|
struct classify< volatile void*, false, false, false > { using type = void; };
|
|
|
|
template< >
|
|
struct classify< const volatile void*, false, false, false > { using type = void; };
|
|
|
|
template< typename T, typename U >
|
|
struct classify< T U::*, false, false, false > { using type = void; };
|
|
|
|
} // namespace detail
|
|
} // namespace atomics
|
|
} // namespace boost
|
|
|
|
#include <boost/atomic/detail/footer.hpp>
|
|
|
|
#endif // BOOST_ATOMIC_DETAIL_CLASSIFY_HPP_INCLUDED_
|