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Diffstat (limited to 'boost/log/utility/functional/bind_output.hpp')
-rw-r--r-- | boost/log/utility/functional/bind_output.hpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/boost/log/utility/functional/bind_output.hpp b/boost/log/utility/functional/bind_output.hpp new file mode 100644 index 0000000000..19cd88b947 --- /dev/null +++ b/boost/log/utility/functional/bind_output.hpp @@ -0,0 +1,55 @@ +/* + * Copyright Andrey Semashev 2007 - 2014. + * 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 bind_output.hpp + * \author Andrey Semashev + * \date 30.03.2008 + * + * This header contains a function object that puts the received value to the bound stream. + * This is a lightweight alternative to what Boost.Phoenix and Boost.Lambda provides. + */ + +#ifndef BOOST_LOG_UTILITY_FUNCTIONAL_BIND_OUTPUT_HPP_INCLUDED_ +#define BOOST_LOG_UTILITY_FUNCTIONAL_BIND_OUTPUT_HPP_INCLUDED_ + +#include <boost/log/detail/config.hpp> +#include <boost/log/utility/functional/bind.hpp> +#include <boost/log/detail/header.hpp> + +#ifdef BOOST_HAS_PRAGMA_ONCE +#pragma once +#endif + +namespace boost { + +BOOST_LOG_OPEN_NAMESPACE + +//! The function object that outputs its second operand to the first one +struct output_fun +{ + typedef void result_type; + + template< typename StreamT, typename T > + void operator() (StreamT& strm, T const& val) const + { + strm << val; + } +}; + +template< typename StreamT > +BOOST_FORCEINLINE binder1st< output_fun, StreamT& > bind_output(StreamT& strm) +{ + return binder1st< output_fun, StreamT& >(output_fun(), strm); +} + +BOOST_LOG_CLOSE_NAMESPACE // namespace log + +} // namespace boost + +#include <boost/log/detail/footer.hpp> + +#endif // BOOST_LOG_UTILITY_FUNCTIONAL_BIND_OUTPUT_HPP_INCLUDED_ |