boost/log/detail/is_character_type.hpp

/*
 *          Copyright Andrey Semashev 2007 - 2015.
 * 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)
 */
/*!
 * \file   is_character_type.hpp
 * \author Andrey Semashev
 * \date   25.07.2015
 *
 * The header defines \c is_character_type trait which checks if the type is one of the character types
 */
#ifndef BOOST_LOG_DETAIL_IS_CHARACTER_TYPE_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_IS_CHARACTER_TYPE_HPP_INCLUDED_
#include <boost/log/detail/config.hpp>
#include <boost/log/detail/header.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace aux {
template< typename T >
struct is_character_type
{
    static BOOST_CONSTEXPR_OR_CONST bool value = false;
};
template< >
struct is_character_type< char >
{
    static BOOST_CONSTEXPR_OR_CONST bool value = true;
};
template< >
struct is_character_type< wchar_t >
{
    static BOOST_CONSTEXPR_OR_CONST bool value = true;
};
#if !defined(BOOST_NO_CXX11_CHAR16_T)
template< >
struct is_character_type< char16_t >
{
    static BOOST_CONSTEXPR_OR_CONST bool value = true;
};
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T)
template< >
struct is_character_type< char32_t >
{
    static BOOST_CONSTEXPR_OR_CONST bool value = true;
};
#endif
} // namespace aux
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include <boost/log/detail/footer.hpp>
#endif // BOOST_LOG_DETAIL_IS_CHARACTER_TYPE_HPP_INCLUDED_