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Diffstat (limited to 'boost/log/detail/is_ostream.hpp')
-rw-r--r-- | boost/log/detail/is_ostream.hpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/boost/log/detail/is_ostream.hpp b/boost/log/detail/is_ostream.hpp new file mode 100644 index 0000000000..2131baebb5 --- /dev/null +++ b/boost/log/detail/is_ostream.hpp @@ -0,0 +1,57 @@ +/* + * 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_ostream.hpp + * \author Andrey Semashev + * \date 05.07.2015 + * + * \brief This header is the Boost.Log library implementation, see the library documentation + * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. In this file + * internal configuration macros are defined. + */ + +#ifndef BOOST_LOG_DETAIL_IS_OSTREAM_HPP_INCLUDED_ +#define BOOST_LOG_DETAIL_IS_OSTREAM_HPP_INCLUDED_ + +#include <iosfwd> +#include <boost/type_traits/is_base_of.hpp> +#include <boost/type_traits/has_left_shift.hpp> +#include <boost/log/detail/config.hpp> +#include <boost/log/utility/formatting_ostream_fwd.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_ostream +{ + static BOOST_CONSTEXPR_OR_CONST bool value = is_base_of< std::ios_base, T >::value && has_left_shift< T, int >::value; +}; + +template< typename CharT, typename TraitsT, typename AllocatorT > +struct is_ostream< basic_formatting_ostream< CharT, TraitsT, AllocatorT > > +{ + static BOOST_CONSTEXPR_OR_CONST bool value = true; +}; + +} // namespace aux + +BOOST_LOG_CLOSE_NAMESPACE // namespace log + +} // namespace boost + +#include <boost/log/detail/footer.hpp> + +#endif // BOOST_LOG_DETAIL_IS_OSTREAM_HPP_INCLUDED_ |