You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
128 lines
3.5 KiB
128 lines
3.5 KiB
|
|
#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: advance_backward.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
|
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
|
// $Revision: 49267 $ |
|
|
|
#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
|
|
|