| /* |
| * 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 value_ref_visitation.hpp |
| * \author Andrey Semashev |
| * \date 28.07.2012 |
| * |
| * \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_VALUE_REF_VISITATION_HPP_INCLUDED_ |
| #define BOOST_LOG_DETAIL_VALUE_REF_VISITATION_HPP_INCLUDED_ |
| |
| #include <boost/mpl/at.hpp> |
| #include <boost/mpl/begin.hpp> |
| #include <boost/mpl/end.hpp> |
| #include <boost/mpl/advance.hpp> |
| #include <boost/mpl/erase.hpp> |
| #include <boost/mpl/size.hpp> |
| #include <boost/preprocessor/arithmetic/inc.hpp> |
| #include <boost/preprocessor/repetition/repeat_from_to.hpp> |
| #include <boost/preprocessor/iteration/iterate.hpp> |
| #include <boost/log/detail/config.hpp> |
| #include <boost/log/detail/header.hpp> |
| |
| #ifndef BOOST_LOG_VALUE_REF_VISITATION_UNROLL_COUNT |
| #define BOOST_LOG_VALUE_REF_VISITATION_UNROLL_COUNT 8 |
| #endif |
| |
| namespace boost { |
| |
| BOOST_LOG_OPEN_NAMESPACE |
| |
| namespace aux { |
| |
| template< typename SequenceT, typename VisitorT, unsigned int SizeV = mpl::size< SequenceT >::value > |
| struct apply_visitor_dispatch |
| { |
| typedef typename VisitorT::result_type result_type; |
| |
| static BOOST_FORCEINLINE result_type call(const void* p, unsigned int type_index, VisitorT& visitor) |
| { |
| typedef typename mpl::begin< SequenceT >::type begin_type; |
| typedef typename mpl::advance_c< begin_type, SizeV / 2u >::type middle_type; |
| if (type_index < (SizeV / 2u)) |
| { |
| typedef typename mpl::erase< SequenceT, middle_type, typename mpl::end< SequenceT >::type >::type new_sequence; |
| typedef apply_visitor_dispatch< new_sequence, VisitorT > new_dispatch; |
| return new_dispatch::call(p, type_index, visitor); |
| } |
| else |
| { |
| typedef typename mpl::erase< SequenceT, begin_type, middle_type >::type new_sequence; |
| typedef apply_visitor_dispatch< new_sequence, VisitorT > new_dispatch; |
| return new_dispatch::call(p, type_index - (SizeV / 2u), visitor); |
| } |
| } |
| }; |
| |
| #define BOOST_LOG_AUX_CASE_ENTRY(z, i, data)\ |
| case i: return visitor(*static_cast< typename mpl::at_c< SequenceT, i >::type const* >(p)); |
| |
| #define BOOST_PP_FILENAME_1 <boost/log/detail/value_ref_visitation.hpp> |
| #define BOOST_PP_ITERATION_LIMITS (1, BOOST_PP_INC(BOOST_LOG_VALUE_REF_VISITATION_VTABLE_SIZE)) |
| #include BOOST_PP_ITERATE() |
| |
| #undef BOOST_LOG_AUX_CASE_ENTRY |
| |
| } // namespace aux |
| |
| BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| |
| } // namespace boost |
| |
| #include <boost/log/detail/footer.hpp> |
| |
| #endif // BOOST_LOG_DETAIL_VALUE_REF_VISITATION_HPP_INCLUDED_ |
| |
| #ifdef BOOST_PP_IS_ITERATING |
| |
| #define BOOST_LOG_AUX_SWITCH_SIZE BOOST_PP_ITERATION() |
| |
| template< typename SequenceT, typename VisitorT > |
| struct apply_visitor_dispatch< SequenceT, VisitorT, BOOST_LOG_AUX_SWITCH_SIZE > |
| { |
| typedef typename VisitorT::result_type result_type; |
| |
| static BOOST_FORCEINLINE result_type call(const void* p, unsigned int type_index, VisitorT& visitor) |
| { |
| switch (type_index) |
| { |
| BOOST_PP_REPEAT_FROM_TO(1, BOOST_LOG_AUX_SWITCH_SIZE, BOOST_LOG_AUX_CASE_ENTRY, ~) |
| default: |
| return visitor(*static_cast< typename mpl::at_c< SequenceT, 0 >::type const* >(p)); |
| } |
| } |
| }; |
| |
| #undef BOOST_LOG_AUX_SWITCH_SIZE |
| |
| #endif // BOOST_PP_IS_ITERATING |