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#if !defined(BOOST_PP_IS_ITERATING)
///// header body
#ifndef BOOST_MPL_AUX778076_ADVANCE_BACKWARD_HPP_INCLUDED
#define BOOST_MPL_AUX778076_ADVANCE_BACKWARD_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#if !defined(BOOST_MPL_PREPROCESSING_MODE)
# include <boost/mpl/prior.hpp>
# include <boost/mpl/apply_wrap.hpp>
#endif
#include <boost/mpl/aux_/config/use_preprocessed.hpp>
#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
&& !defined(BOOST_MPL_PREPROCESSING_MODE)
# define BOOST_MPL_PREPROCESSED_HEADER advance_backward.hpp
# include <boost/mpl/aux_/include_preprocessed.hpp>
#else
# include <boost/mpl/limits/unrolling.hpp>
# include <boost/mpl/aux_/nttp_decl.hpp>
# include <boost/mpl/aux_/config/eti.hpp>
# include <boost/preprocessor/iterate.hpp>
# include <boost/preprocessor/cat.hpp>
# include <boost/preprocessor/inc.hpp>
namespace boost { namespace mpl { namespace aux {
// forward declaration
template< BOOST_MPL_AUX_NTTP_DECL(long, N) > struct advance_backward;
# define BOOST_PP_ITERATION_PARAMS_1 \
(3,(0, BOOST_MPL_LIMIT_UNROLLING, <boost/mpl/aux_/advance_backward.hpp>))
# include BOOST_PP_ITERATE()
// implementation for N that exceeds BOOST_MPL_LIMIT_UNROLLING
template< BOOST_MPL_AUX_NTTP_DECL(long, N) >
struct advance_backward
{
template< typename Iterator > struct apply
{
typedef typename apply_wrap1<
advance_backward<BOOST_MPL_LIMIT_UNROLLING>
, Iterator
>::type chunk_result_;
typedef typename apply_wrap1<
advance_backward<(
(N - BOOST_MPL_LIMIT_UNROLLING) < 0
? 0
: N - BOOST_MPL_LIMIT_UNROLLING
)>
, chunk_result_
>::type type;
};
};
}}}
#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#endif // BOOST_MPL_AUX778076_ADVANCE_BACKWARD_HPP_INCLUDED
///// iteration, depth == 1
// For gcc 4.4 compatability, we must include the
// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
#else // BOOST_PP_IS_ITERATING
#if BOOST_PP_ITERATION_DEPTH() == 1
#define i_ BOOST_PP_FRAME_ITERATION(1)
template<>
struct advance_backward< BOOST_PP_FRAME_ITERATION(1) >
{
template< typename Iterator > struct apply
{
typedef Iterator iter0;
#if i_ > 0
# define BOOST_PP_ITERATION_PARAMS_2 \
(3,(1, BOOST_PP_FRAME_ITERATION(1), <boost/mpl/aux_/advance_backward.hpp>))
# include BOOST_PP_ITERATE()
#endif
typedef BOOST_PP_CAT(iter,BOOST_PP_FRAME_ITERATION(1)) type;
};
#if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
/// ETI workaround
template<> struct apply<int>
{
typedef int type;
};
#endif
};
#undef i_
///// iteration, depth == 2
#elif BOOST_PP_ITERATION_DEPTH() == 2
# define AUX778076_ITER_0 BOOST_PP_CAT(iter,BOOST_PP_DEC(BOOST_PP_FRAME_ITERATION(2)))
# define AUX778076_ITER_1 BOOST_PP_CAT(iter,BOOST_PP_FRAME_ITERATION(2))
typedef typename prior<AUX778076_ITER_0>::type AUX778076_ITER_1;
# undef AUX778076_ITER_1
# undef AUX778076_ITER_0
#endif // BOOST_PP_ITERATION_DEPTH()
#endif // BOOST_PP_IS_ITERATING
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