1 | |
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2 | #if !defined(BOOST_PP_IS_ITERATING) |
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3 | |
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4 | ///// header body |
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5 | |
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6 | #ifndef BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
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7 | #define BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
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8 | |
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9 | // Copyright Aleksey Gurtovoy 2000-2004 |
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10 | // |
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11 | // Distributed under the Boost Software License, Version 1.0. |
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12 | // (See accompanying file LICENSE_1_0.txt or copy at |
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13 | // http://www.boost.org/LICENSE_1_0.txt) |
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14 | // |
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15 | // See http://www.boost.org/libs/mpl for documentation. |
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16 | |
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17 | // $Id: advance_forward.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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18 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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19 | // $Revision: 49267 $ |
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20 | |
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21 | #if !defined(BOOST_MPL_PREPROCESSING_MODE) |
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22 | # include <boost/mpl/next.hpp> |
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23 | # include <boost/mpl/apply_wrap.hpp> |
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24 | #endif |
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25 | |
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26 | #include <boost/mpl/aux_/config/use_preprocessed.hpp> |
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27 | |
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28 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ |
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29 | && !defined(BOOST_MPL_PREPROCESSING_MODE) |
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30 | |
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31 | # define BOOST_MPL_PREPROCESSED_HEADER advance_forward.hpp |
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32 | # include <boost/mpl/aux_/include_preprocessed.hpp> |
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33 | |
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34 | #else |
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35 | |
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36 | # include <boost/mpl/limits/unrolling.hpp> |
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37 | # include <boost/mpl/aux_/nttp_decl.hpp> |
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38 | # include <boost/mpl/aux_/config/eti.hpp> |
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39 | |
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40 | # include <boost/preprocessor/iterate.hpp> |
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41 | # include <boost/preprocessor/cat.hpp> |
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42 | # include <boost/preprocessor/inc.hpp> |
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43 | |
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44 | namespace boost { namespace mpl { namespace aux { |
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45 | |
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46 | // forward declaration |
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47 | template< BOOST_MPL_AUX_NTTP_DECL(long, N) > struct advance_forward; |
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48 | |
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49 | # define BOOST_PP_ITERATION_PARAMS_1 \ |
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50 | (3,(0, BOOST_MPL_LIMIT_UNROLLING, <boost/mpl/aux_/advance_forward.hpp>)) |
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51 | # include BOOST_PP_ITERATE() |
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52 | |
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53 | // implementation for N that exceeds BOOST_MPL_LIMIT_UNROLLING |
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54 | template< BOOST_MPL_AUX_NTTP_DECL(long, N) > |
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55 | struct advance_forward |
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56 | { |
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57 | template< typename Iterator > struct apply |
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58 | { |
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59 | typedef typename apply_wrap1< |
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60 | advance_forward<BOOST_MPL_LIMIT_UNROLLING> |
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61 | , Iterator |
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62 | >::type chunk_result_; |
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63 | |
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64 | typedef typename apply_wrap1< |
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65 | advance_forward<( |
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66 | (N - BOOST_MPL_LIMIT_UNROLLING) < 0 |
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67 | ? 0 |
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68 | : N - BOOST_MPL_LIMIT_UNROLLING |
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69 | )> |
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70 | , chunk_result_ |
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71 | >::type type; |
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72 | }; |
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73 | }; |
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74 | |
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75 | }}} |
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76 | |
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77 | #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS |
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78 | #endif // BOOST_MPL_AUX_ADVANCE_FORWARD_HPP_INCLUDED |
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79 | |
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80 | ///// iteration, depth == 1 |
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81 | |
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82 | // For gcc 4.4 compatability, we must include the |
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83 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. |
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84 | #else // BOOST_PP_IS_ITERATING |
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85 | #if BOOST_PP_ITERATION_DEPTH() == 1 |
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86 | #define i_ BOOST_PP_FRAME_ITERATION(1) |
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87 | |
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88 | template<> |
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89 | struct advance_forward< BOOST_PP_FRAME_ITERATION(1) > |
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90 | { |
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91 | template< typename Iterator > struct apply |
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92 | { |
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93 | typedef Iterator iter0; |
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94 | |
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95 | #if i_ > 0 |
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96 | # define BOOST_PP_ITERATION_PARAMS_2 \ |
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97 | (3,(1, i_, <boost/mpl/aux_/advance_forward.hpp>)) |
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98 | # include BOOST_PP_ITERATE() |
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99 | #endif |
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100 | typedef BOOST_PP_CAT(iter,i_) type; |
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101 | }; |
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102 | |
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103 | #if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) |
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104 | /// ETI workaround |
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105 | template<> struct apply<int> |
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106 | { |
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107 | typedef int type; |
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108 | }; |
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109 | #endif |
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110 | }; |
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111 | |
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112 | #undef i_ |
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113 | |
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114 | ///// iteration, depth == 2 |
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115 | |
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116 | #elif BOOST_PP_ITERATION_DEPTH() == 2 |
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117 | |
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118 | # define AUX778076_ITER_0 BOOST_PP_CAT(iter,BOOST_PP_DEC(BOOST_PP_FRAME_ITERATION(2))) |
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119 | # define AUX778076_ITER_1 BOOST_PP_CAT(iter,BOOST_PP_FRAME_ITERATION(2)) |
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120 | |
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121 | typedef typename next<AUX778076_ITER_0>::type AUX778076_ITER_1; |
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122 | |
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123 | # undef AUX778076_ITER_1 |
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124 | # undef AUX778076_ITER_0 |
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125 | |
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126 | #endif // BOOST_PP_ITERATION_DEPTH() |
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127 | #endif // BOOST_PP_IS_ITERATING |
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