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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 | // $Id$ | |
18 | // $Date$ | |
19 | // $Revision$ | |
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 | // For gcc 4.4 compatability, we must include the | |
83 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. | |
84 | #else // BOOST_PP_IS_ITERATING | |
85 | #if BOOST_PP_ITERATION_DEPTH() == 1 | |
86 | #define i_ BOOST_PP_FRAME_ITERATION(1) | |
87 | ||
88 | template<> | |
89 | struct advance_forward< BOOST_PP_FRAME_ITERATION(1) > | |
90 | { | |
91 | template< typename Iterator > struct apply | |
92 | { | |
93 | typedef Iterator iter0; | |
94 | ||
95 | #if i_ > 0 | |
96 | # define BOOST_PP_ITERATION_PARAMS_2 \ | |
97 | (3,(1, i_, <boost/mpl/aux_/advance_forward.hpp>)) | |
98 | # include BOOST_PP_ITERATE() | |
99 | #endif | |
100 | typedef BOOST_PP_CAT(iter,i_) type; | |
101 | }; | |
102 | ||
103 | #if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) | |
104 | /// ETI workaround | |
105 | template<> struct apply<int> | |
106 | { | |
107 | typedef int type; | |
108 | }; | |
109 | #endif | |
110 | }; | |
111 | ||
112 | #undef i_ | |
113 | ||
114 | ///// iteration, depth == 2 | |
115 | ||
116 | #elif BOOST_PP_ITERATION_DEPTH() == 2 | |
117 | ||
118 | # define AUX778076_ITER_0 BOOST_PP_CAT(iter,BOOST_PP_DEC(BOOST_PP_FRAME_ITERATION(2))) | |
119 | # define AUX778076_ITER_1 BOOST_PP_CAT(iter,BOOST_PP_FRAME_ITERATION(2)) | |
120 | ||
121 | typedef typename next<AUX778076_ITER_0>::type AUX778076_ITER_1; | |
122 | ||
123 | # undef AUX778076_ITER_1 | |
124 | # undef AUX778076_ITER_0 | |
125 | ||
126 | #endif // BOOST_PP_ITERATION_DEPTH() | |
127 | #endif // BOOST_PP_IS_ITERATING |