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1 | |
2 | #if !defined(BOOST_PP_IS_ITERATING) | |
3 | ||
4 | ///// header body | |
5 | ||
6 | #ifndef BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED | |
7 | #define BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED | |
8 | ||
9 | // Copyright Aleksey Gurtovoy 2001-2004 | |
10 | // Copyright Peter Dimov 2001-2003 | |
11 | // | |
12 | // Distributed under the Boost Software License, Version 1.0. | |
13 | // (See accompanying file LICENSE_1_0.txt or copy at | |
14 | // http://www.boost.org/LICENSE_1_0.txt) | |
15 | // | |
16 | // See http://www.boost.org/libs/mpl for documentation. | |
17 | ||
18 | // $Id$ | |
19 | // $Date$ | |
20 | // $Revision$ | |
21 | ||
22 | ||
23 | #if !defined(BOOST_MPL_PREPROCESSING_MODE) | |
24 | # include <boost/mpl/arg.hpp> | |
25 | # include <boost/mpl/aux_/adl_barrier.hpp> | |
26 | ||
27 | # if !defined(BOOST_MPL_CFG_NO_ADL_BARRIER_NAMESPACE) | |
28 | # define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) \ | |
29 | using ::BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::type; \ | |
30 | /**/ | |
31 | # else | |
32 | # define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) /**/ | |
33 | # endif | |
34 | ||
35 | #endif | |
36 | ||
37 | #include <boost/mpl/aux_/config/use_preprocessed.hpp> | |
38 | ||
39 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ | |
40 | && !defined(BOOST_MPL_PREPROCESSING_MODE) | |
41 | ||
42 | # define BOOST_MPL_PREPROCESSED_HEADER placeholders.hpp | |
43 | # include <boost/mpl/aux_/include_preprocessed.hpp> | |
44 | ||
45 | #else | |
46 | ||
47 | # include <boost/mpl/aux_/nttp_decl.hpp> | |
48 | # include <boost/mpl/limits/arity.hpp> | |
49 | # include <boost/preprocessor/iterate.hpp> | |
50 | # include <boost/preprocessor/cat.hpp> | |
51 | ||
52 | // watch out for GNU gettext users, who #define _(x) | |
53 | #if !defined(_) || defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT) | |
54 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN | |
55 | typedef arg<-1> _; | |
56 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE | |
57 | ||
58 | namespace boost { namespace mpl { | |
59 | ||
60 | BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(_) | |
61 | ||
62 | namespace placeholders { | |
63 | using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::_; | |
64 | } | |
65 | ||
66 | }} | |
67 | #endif | |
68 | ||
69 | /// agurt, 17/mar/02: one more placeholder for the last 'apply#' | |
70 | /// specialization | |
71 | #define BOOST_PP_ITERATION_PARAMS_1 \ | |
72 | (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY + 1, <boost/mpl/placeholders.hpp>)) | |
73 | #include BOOST_PP_ITERATE() | |
74 | ||
75 | #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS | |
76 | #endif // BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED | |
77 | ||
78 | ///// iteration | |
79 | ||
80 | #else | |
81 | #define i_ BOOST_PP_FRAME_ITERATION(1) | |
82 | ||
83 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN | |
84 | ||
85 | typedef arg<i_> BOOST_PP_CAT(_,i_); | |
86 | ||
87 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE | |
88 | ||
89 | namespace boost { namespace mpl { | |
90 | ||
91 | BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(BOOST_PP_CAT(_,i_)) | |
92 | ||
93 | namespace placeholders { | |
94 | using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::BOOST_PP_CAT(_,i_); | |
95 | } | |
96 | ||
97 | }} | |
98 | ||
99 | #undef i_ | |
100 | #endif // BOOST_PP_IS_ITERATING |