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1 | // Copyright David Abrahams 2005. Distributed under the Boost |
2 | // Software License, Version 1.0. (See accompanying | |
3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
4 | #ifndef BOOST_PARAMETER_MATCH_DWA2005714_HPP | |
5 | # define BOOST_PARAMETER_MATCH_DWA2005714_HPP | |
6 | ||
7 | # include <boost/detail/workaround.hpp> | |
8 | # include <boost/preprocessor/seq/enum.hpp> | |
9 | ||
10 | # if BOOST_WORKAROUND(__MWERKS__, <= 0x3003) | |
11 | // Temporary version of BOOST_PP_SEQ_ENUM until Paul M. integrates the workaround. | |
12 | # define BOOST_PARAMETER_SEQ_ENUM_I(size,seq) BOOST_PP_CAT(BOOST_PP_SEQ_ENUM_, size) seq | |
13 | # define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PARAMETER_SEQ_ENUM_I(BOOST_PP_SEQ_SIZE(seq), seq) | |
14 | # else | |
15 | # define BOOST_PARAMETER_SEQ_ENUM(seq) BOOST_PP_SEQ_ENUM(seq) | |
16 | # endif | |
17 | ||
18 | # if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) | |
19 | ||
20 | # include <boost/parameter/config.hpp> | |
21 | # include <boost/parameter/aux_/void.hpp> | |
22 | # include <boost/preprocessor/arithmetic/sub.hpp> | |
23 | # include <boost/preprocessor/facilities/intercept.hpp> | |
24 | # include <boost/preprocessor/repetition/enum_trailing_params.hpp> | |
25 | ||
26 | # define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) \ | |
27 | BOOST_PP_ENUM_TRAILING_PARAMS( \ | |
28 | BOOST_PP_SUB( \ | |
29 | BOOST_PARAMETER_MAX_ARITY \ | |
30 | , BOOST_PP_SEQ_SIZE(ArgTypes) \ | |
31 | ) \ | |
32 | , ::boost::parameter::void_ BOOST_PP_INTERCEPT \ | |
33 | ) | |
34 | ||
35 | # else | |
36 | ||
37 | # define BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) | |
38 | ||
39 | # endif | |
40 | ||
41 | // | |
42 | // Generates, e.g. | |
43 | // | |
44 | // typename dfs_params::match<A1,A2>::type name = dfs_params() | |
45 | // | |
46 | // with workarounds for Borland compatibility. | |
47 | // | |
48 | ||
49 | # define BOOST_PARAMETER_MATCH(ParameterSpec, ArgTypes, name) \ | |
50 | typename ParameterSpec ::match< \ | |
51 | BOOST_PARAMETER_SEQ_ENUM(ArgTypes) \ | |
52 | BOOST_PARAMETER_MATCH_DEFAULTS(ArgTypes) \ | |
53 | >::type name = ParameterSpec () | |
54 | ||
55 | #endif // BOOST_PARAMETER_MATCH_DWA2005714_HPP |