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/*
* 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 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
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