Chris@16: /*
Chris@101:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: /*!
Chris@16:  * \file   bind.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   30.03.2008
Chris@16:  *
Chris@16:  * This header contains function object adapters.
Chris@16:  * This is a lightweight alternative to what Boost.Phoenix and Boost.Bind provides.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_UTILITY_FUNCTIONAL_BIND_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_UTILITY_FUNCTIONAL_BIND_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <boost/type_traits/remove_cv.hpp>
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: #include <boost/log/detail/header.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: BOOST_LOG_OPEN_NAMESPACE
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@16: template< typename T >
Chris@16: struct make_arg_type
Chris@16: {
Chris@16:     typedef T const& type;
Chris@16: };
Chris@16: 
Chris@16: template< typename T >
Chris@16: struct make_arg_type< T& >
Chris@16: {
Chris@16:     typedef T& type;
Chris@16: };
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: //! First argument binder
Chris@16: template< typename FunT, typename FirstArgT >
Chris@16: struct binder1st :
Chris@16:     private FunT
Chris@16: {
Chris@16:     typedef typename FunT::result_type result_type;
Chris@16: 
Chris@16:     binder1st(FunT const& fun, typename aux::make_arg_type< FirstArgT >::type arg) : FunT(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     result_type operator() () const
Chris@16:     {
Chris@16:         return FunT::operator()(m_arg);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0 >
Chris@16:     result_type operator() (T0 const& arg0) const
Chris@16:     {
Chris@16:         return FunT::operator()(m_arg, arg0);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return FunT::operator()(m_arg, arg0, arg1);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     FirstArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: //! First argument binder
Chris@16: template< typename FunT, typename FirstArgT >
Chris@16: struct binder1st< FunT&, FirstArgT >
Chris@16: {
Chris@16:     typedef typename remove_cv< FunT >::type::result_type result_type;
Chris@16: 
Chris@16:     binder1st(FunT& fun, typename aux::make_arg_type< FirstArgT >::type arg) : m_fun(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     result_type operator() () const
Chris@16:     {
Chris@16:         return m_fun(m_arg);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0 >
Chris@16:     result_type operator() (T0 const& arg0) const
Chris@16:     {
Chris@16:         return m_fun(m_arg, arg0);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return m_fun(m_arg, arg0, arg1);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     FunT& m_fun;
Chris@16:     FirstArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: template< typename FunT, typename FirstArgT >
Chris@16: BOOST_FORCEINLINE binder1st< FunT, FirstArgT > bind1st(FunT fun, FirstArgT const& arg)
Chris@16: {
Chris@16:     return binder1st< FunT, FirstArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: template< typename FunT, typename FirstArgT >
Chris@16: BOOST_FORCEINLINE binder1st< FunT, FirstArgT > bind1st(FunT fun, FirstArgT& arg)
Chris@16: {
Chris@16:     return binder1st< FunT, FirstArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: //! Second argument binder
Chris@16: template< typename FunT, typename SecondArgT >
Chris@16: struct binder2nd :
Chris@16:     private FunT
Chris@16: {
Chris@16:     typedef typename FunT::result_type result_type;
Chris@16: 
Chris@16:     binder2nd(FunT const& fun, typename aux::make_arg_type< SecondArgT >::type arg) : FunT(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     template< typename T >
Chris@16:     result_type operator() (T const& arg) const
Chris@16:     {
Chris@16:         return FunT::operator()(arg, m_arg);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return FunT::operator()(arg0, m_arg, arg1);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     SecondArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: //! Second argument binder
Chris@16: template< typename FunT, typename SecondArgT >
Chris@16: struct binder2nd< FunT&, SecondArgT >
Chris@16: {
Chris@16:     typedef typename remove_cv< FunT >::type::result_type result_type;
Chris@16: 
Chris@16:     binder2nd(FunT& fun, typename aux::make_arg_type< SecondArgT >::type arg) : m_fun(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     template< typename T >
Chris@16:     result_type operator() (T const& arg) const
Chris@16:     {
Chris@16:         return m_fun(arg, m_arg);
Chris@16:     }
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return m_fun(arg0, m_arg, arg1);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     FunT& m_fun;
Chris@16:     SecondArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: template< typename FunT, typename SecondArgT >
Chris@16: BOOST_FORCEINLINE binder2nd< FunT, SecondArgT > bind2nd(FunT fun, SecondArgT const& arg)
Chris@16: {
Chris@16:     return binder2nd< FunT, SecondArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: template< typename FunT, typename SecondArgT >
Chris@16: BOOST_FORCEINLINE binder2nd< FunT, SecondArgT > bind2nd(FunT fun, SecondArgT& arg)
Chris@16: {
Chris@16:     return binder2nd< FunT, SecondArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: //! Third argument binder
Chris@16: template< typename FunT, typename ThirdArgT >
Chris@16: struct binder3rd :
Chris@16:     private FunT
Chris@16: {
Chris@16:     typedef typename FunT::result_type result_type;
Chris@16: 
Chris@16:     binder3rd(FunT const& fun, typename aux::make_arg_type< ThirdArgT >::type arg) : FunT(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return FunT::operator()(arg0, arg1, m_arg);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     ThirdArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: //! Third argument binder
Chris@16: template< typename FunT, typename ThirdArgT >
Chris@16: struct binder3rd< FunT&, ThirdArgT >
Chris@16: {
Chris@16:     typedef typename remove_cv< FunT >::type::result_type result_type;
Chris@16: 
Chris@16:     binder3rd(FunT& fun, typename aux::make_arg_type< ThirdArgT >::type arg) : m_fun(fun), m_arg(arg) {}
Chris@16: 
Chris@16:     template< typename T0, typename T1 >
Chris@16:     result_type operator() (T0 const& arg0, T1 const& arg1) const
Chris@16:     {
Chris@16:         return m_fun(arg0, arg1, m_arg);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     FunT& m_fun;
Chris@16:     ThirdArgT m_arg;
Chris@16: };
Chris@16: 
Chris@16: template< typename FunT, typename ThirdArgT >
Chris@16: BOOST_FORCEINLINE binder3rd< FunT, ThirdArgT > bind3rd(FunT fun, ThirdArgT const& arg)
Chris@16: {
Chris@16:     return binder3rd< FunT, ThirdArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: template< typename FunT, typename ThirdArgT >
Chris@16: BOOST_FORCEINLINE binder3rd< FunT, ThirdArgT > bind3rd(FunT fun, ThirdArgT& arg)
Chris@16: {
Chris@16:     return binder3rd< FunT, ThirdArgT >(fun, arg);
Chris@16: }
Chris@16: 
Chris@16: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/log/detail/footer.hpp>
Chris@16: 
Chris@16: #endif // BOOST_LOG_UTILITY_FUNCTIONAL_BIND_HPP_INCLUDED_