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1 | ||
2 | #if !defined(BOOST_PP_IS_ITERATING) | |
3 | ||
4 | ///// header body | |
5 | ||
6 | #ifndef BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED | |
7 | #define BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED | |
8 | ||
9 | // Copyright Aleksey Gurtovoy 2002-2004 | |
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/apply.hpp> | |
23 | # include <boost/mpl/at.hpp> | |
24 | # include <boost/mpl/size.hpp> | |
25 | # include <boost/mpl/aux_/nttp_decl.hpp> | |
26 | # include <boost/mpl/aux_/lambda_spec.hpp> | |
27 | #endif | |
28 | ||
29 | #include <boost/mpl/aux_/config/use_preprocessed.hpp> | |
30 | ||
31 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ | |
32 | && !defined(BOOST_MPL_PREPROCESSING_MODE) | |
33 | ||
34 | # define BOOST_MPL_PREPROCESSED_HEADER unpack_args.hpp | |
35 | # include <boost/mpl/aux_/include_preprocessed.hpp> | |
36 | ||
37 | #else | |
38 | ||
39 | # include <boost/mpl/limits/arity.hpp> | |
40 | # include <boost/mpl/aux_/preprocessor/repeat.hpp> | |
41 | # include <boost/mpl/aux_/config/ctps.hpp> | |
42 | # include <boost/mpl/aux_/config/forwarding.hpp> | |
43 | # include <boost/preprocessor/iterate.hpp> | |
44 | # include <boost/preprocessor/cat.hpp> | |
45 | ||
46 | ||
47 | namespace boost { namespace mpl { | |
48 | ||
49 | // local macros, #undef-ined at the end of the header | |
50 | ||
51 | # define AUX778076_UNPACK(unused, i, Args) \ | |
52 | , typename at_c<Args,i>::type \ | |
53 | /**/ | |
54 | ||
55 | # define AUX778076_UNPACKED_ARGS(n, Args) \ | |
56 | BOOST_MPL_PP_REPEAT(n, AUX778076_UNPACK, Args) \ | |
57 | /**/ | |
58 | ||
59 | namespace aux { | |
60 | ||
61 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) | |
62 | template< int size, typename F, typename Args > | |
63 | struct unpack_args_impl; | |
64 | #else | |
65 | template< BOOST_MPL_AUX_NTTP_DECL(int, size) > struct unpack_args_impl | |
66 | { | |
67 | template< typename F, typename Args > struct apply; | |
68 | }; | |
69 | #endif | |
70 | ||
71 | #define BOOST_PP_ITERATION_PARAMS_1 \ | |
72 | (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/unpack_args.hpp>)) | |
73 | #include BOOST_PP_ITERATE() | |
74 | ||
75 | } | |
76 | ||
77 | template< | |
78 | typename F | |
79 | > | |
80 | struct unpack_args | |
81 | { | |
82 | template< typename Args > struct apply | |
83 | #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) | |
84 | # if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) | |
85 | : aux::unpack_args_impl< size<Args>::value,F,Args > | |
86 | # else | |
87 | : aux::unpack_args_impl< size<Args>::value > | |
88 | ::template apply< F,Args > | |
89 | # endif | |
90 | { | |
91 | #else // BOOST_MPL_CFG_NO_NESTED_FORWARDING | |
92 | { | |
93 | typedef typename aux::unpack_args_impl< | |
94 | size<Args>::value | |
95 | , F | |
96 | , Args | |
97 | >::type type; | |
98 | #endif | |
99 | }; | |
100 | }; | |
101 | ||
102 | BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, unpack_args) | |
103 | ||
104 | # undef AUX778076_UNPACK | |
105 | # undef AUX778076_UNPACKED_ARGS | |
106 | ||
107 | }} | |
108 | ||
109 | #endif // BOOST_MPL_CFG_USE_PREPROCESSED_HEADERS | |
110 | #endif // BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED | |
111 | ||
112 | ///// iteration, depth == 1 | |
113 | ||
114 | // For gcc 4.4 compatability, we must include the | |
115 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. | |
116 | #else // BOOST_PP_IS_ITERATING | |
117 | #if BOOST_PP_ITERATION_DEPTH() == 1 | |
118 | ||
119 | # define i_ BOOST_PP_FRAME_ITERATION(1) | |
120 | ||
121 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) | |
122 | ||
123 | template< typename F, typename Args > | |
124 | struct unpack_args_impl<i_,F,Args> | |
125 | : BOOST_PP_CAT(apply,i_)< | |
126 | F | |
127 | AUX778076_UNPACKED_ARGS(i_, Args) | |
128 | > | |
129 | { | |
130 | }; | |
131 | ||
132 | #else | |
133 | ||
134 | template<> struct unpack_args_impl<i_> | |
135 | { | |
136 | template< typename F, typename Args > struct apply | |
137 | : BOOST_PP_CAT(apply,i_)< | |
138 | F | |
139 | AUX778076_UNPACKED_ARGS(i_, Args) | |
140 | > | |
141 | { | |
142 | }; | |
143 | }; | |
144 | ||
145 | #endif | |
146 | ||
147 | # undef i_ | |
148 | ||
149 | #endif // BOOST_PP_ITERATION_DEPTH() | |
150 | #endif // BOOST_PP_IS_ITERATING |