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| 1 |
| 2 #if !defined(BOOST_PP_IS_ITERATING) |
| 3 |
| 4 ///// header body |
| 5 |
| 6 #ifndef BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
| 7 #define BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
| 8 |
| 9 // Copyright Aleksey Gurtovoy 2000-2004 |
| 10 // |
| 11 // Distributed under the Boost Software License, Version 1.0. |
| 12 // (See accompanying file LICENSE_1_0.txt or copy at |
| 13 // http://www.boost.org/LICENSE_1_0.txt) |
| 14 // |
| 15 // See http://www.boost.org/libs/mpl for documentation. |
| 16 |
| 17 // $Source$ |
| 18 // $Date: 2004-09-02 11:41:37 -0400 (Thu, 02 Sep 2004) $ |
| 19 // $Revision: 24874 $ |
| 20 |
| 21 #if !defined(BOOST_MPL_PREPROCESSING_MODE) |
| 22 # include <boost/mpl/next.hpp> |
| 23 # include <boost/mpl/apply_wrap.hpp> |
| 24 #endif |
| 25 |
| 26 #include <boost/mpl/aux_/config/use_preprocessed.hpp> |
| 27 |
| 28 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ |
| 29 && !defined(BOOST_MPL_PREPROCESSING_MODE) |
| 30 |
| 31 # define BOOST_MPL_PREPROCESSED_HEADER advance_forward.hpp |
| 32 # include <boost/mpl/aux_/include_preprocessed.hpp> |
| 33 |
| 34 #else |
| 35 |
| 36 # include <boost/mpl/limits/unrolling.hpp> |
| 37 # include <boost/mpl/aux_/nttp_decl.hpp> |
| 38 # include <boost/mpl/aux_/config/eti.hpp> |
| 39 |
| 40 # include <boost/preprocessor/iterate.hpp> |
| 41 # include <boost/preprocessor/cat.hpp> |
| 42 # include <boost/preprocessor/inc.hpp> |
| 43 |
| 44 namespace boost { namespace mpl { namespace aux { |
| 45 |
| 46 // forward declaration |
| 47 template< BOOST_MPL_AUX_NTTP_DECL(long, N) > struct advance_forward; |
| 48 |
| 49 # define BOOST_PP_ITERATION_PARAMS_1 \ |
| 50 (3,(0, BOOST_MPL_LIMIT_UNROLLING, <boost/mpl/aux_/advance_forward.hpp>)) |
| 51 # include BOOST_PP_ITERATE() |
| 52 |
| 53 // implementation for N that exceeds BOOST_MPL_LIMIT_UNROLLING |
| 54 template< BOOST_MPL_AUX_NTTP_DECL(long, N) > |
| 55 struct advance_forward |
| 56 { |
| 57 template< typename Iterator > struct apply |
| 58 { |
| 59 typedef typename apply_wrap1< |
| 60 advance_forward<BOOST_MPL_LIMIT_UNROLLING> |
| 61 , Iterator |
| 62 >::type chunk_result_; |
| 63 |
| 64 typedef typename apply_wrap1< |
| 65 advance_forward<( |
| 66 (N - BOOST_MPL_LIMIT_UNROLLING) < 0 |
| 67 ? 0 |
| 68 : N - BOOST_MPL_LIMIT_UNROLLING |
| 69 )> |
| 70 , chunk_result_ |
| 71 >::type type; |
| 72 }; |
| 73 }; |
| 74 |
| 75 }}} |
| 76 |
| 77 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS |
| 78 #endif // BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
| 79 |
| 80 ///// iteration, depth == 1 |
| 81 |
| 82 #elif BOOST_PP_ITERATION_DEPTH() == 1 |
| 83 #define i_ BOOST_PP_FRAME_ITERATION(1) |
| 84 |
| 85 template<> |
| 86 struct advance_forward< BOOST_PP_FRAME_ITERATION(1) > |
| 87 { |
| 88 template< typename Iterator > struct apply |
| 89 { |
| 90 typedef Iterator iter0; |
| 91 |
| 92 #if i_ > 0 |
| 93 # define BOOST_PP_ITERATION_PARAMS_2 \ |
| 94 (3,(1, i_, <boost/mpl/aux_/advance_forward.hpp>)) |
| 95 # include BOOST_PP_ITERATE() |
| 96 #endif |
| 97 typedef BOOST_PP_CAT(iter,i_) type; |
| 98 }; |
| 99 |
| 100 #if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) |
| 101 /// ETI workaround |
| 102 template<> struct apply<int> |
| 103 { |
| 104 typedef int type; |
| 105 }; |
| 106 #endif |
| 107 }; |
| 108 |
| 109 #undef i_ |
| 110 |
| 111 ///// iteration, depth == 2 |
| 112 |
| 113 #elif BOOST_PP_ITERATION_DEPTH() == 2 |
| 114 |
| 115 # define AUX778076_ITER_0 BOOST_PP_CAT(iter,BOOST_PP_DEC(BOOST_PP_FRAME_ITERAT
ION(2))) |
| 116 # define AUX778076_ITER_1 BOOST_PP_CAT(iter,BOOST_PP_FRAME_ITERATION(2)) |
| 117 |
| 118 typedef typename next<AUX778076_ITER_0>::type AUX778076_ITER_1; |
| 119 |
| 120 # undef AUX778076_ITER_1 |
| 121 # undef AUX778076_ITER_0 |
| 122 |
| 123 #endif // BOOST_PP_IS_ITERATING |
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