1 /* 2 * Copyright Andrey Semashev 2007 - 2015. 3 * Distributed under the Boost Software License, Version 1.0. 4 * (See accompanying file LICENSE_1_0.txt or copy at 5 * http://www.boost.org/LICENSE_1_0.txt) 6 */ 7 /*! 8 * \file bind_assign.hpp 9 * \author Andrey Semashev 10 * \date 30.03.2008 11 * 12 * This header contains a function object that assigns the received value to the bound object. 13 * This is a lightweight alternative to what Boost.Phoenix and Boost.Lambda provides. 14 */ 15 16 #ifndef BOOST_LOG_UTILITY_FUNCTIONAL_BIND_ASSIGN_HPP_INCLUDED_ 17 #define BOOST_LOG_UTILITY_FUNCTIONAL_BIND_ASSIGN_HPP_INCLUDED_ 18 19 #include <boost/log/detail/config.hpp> 20 #include <boost/log/utility/functional/bind.hpp> 21 #include <boost/log/detail/header.hpp> 22 23 #ifdef BOOST_HAS_PRAGMA_ONCE 24 #pragma once 25 #endif 26 27 namespace boost { 28 29 BOOST_LOG_OPEN_NAMESPACE 30 31 //! The function object that assigns its second operand to the first one 32 struct assign_fun 33 { 34 typedef void result_type; 35 36 template< typename LeftT, typename RightT > operator ()boost::assign_fun37 void operator() (LeftT& assignee, RightT const& val) const 38 { 39 assignee = val; 40 } 41 }; 42 43 template< typename AssigneeT > bind_assign(AssigneeT & assignee)44BOOST_FORCEINLINE binder1st< assign_fun, AssigneeT& > bind_assign(AssigneeT& assignee) 45 { 46 return binder1st< assign_fun, AssigneeT& >(assign_fun(), assignee); 47 } 48 49 BOOST_LOG_CLOSE_NAMESPACE // namespace log 50 51 } // namespace boost 52 53 #include <boost/log/detail/footer.hpp> 54 55 #endif // BOOST_LOG_UTILITY_FUNCTIONAL_BIND_ASSIGN_HPP_INCLUDED_ 56