1 
2 #ifndef BOOST_MPL_AUX_PREPROCESSOR_PARAMS_HPP_INCLUDED
3 #define BOOST_MPL_AUX_PREPROCESSOR_PARAMS_HPP_INCLUDED
4 
5 // Copyright Aleksey Gurtovoy 2000-2004
6 //
7 // Distributed under the Boost Software License, Version 1.0.
8 // (See accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
10 //
11 // See http://www.boost.org/libs/mpl for documentation.
12 
13 // $Id$
14 // $Date$
15 // $Revision$
16 
17 #include <boost/mpl/aux_/config/preprocessor.hpp>
18 
19 // BOOST_MPL_PP_PARAMS(0,T): <nothing>
20 // BOOST_MPL_PP_PARAMS(1,T): T1
21 // BOOST_MPL_PP_PARAMS(2,T): T1, T2
22 // BOOST_MPL_PP_PARAMS(n,T): T1, T2, .., Tn
23 
24 #if !defined(BOOST_MPL_CFG_NO_OWN_PP_PRIMITIVES)
25 
26 #   include <boost/preprocessor/cat.hpp>
27 
28 #   define BOOST_MPL_PP_PARAMS(n,p) \
29     BOOST_PP_CAT(BOOST_MPL_PP_PARAMS_,n)(p) \
30     /**/
31 
32 #   define BOOST_MPL_PP_PARAMS_Z(z_ignored,n,p) \
33     BOOST_PP_CAT(BOOST_MPL_PP_PARAMS_,n)(p) \
34     /**/
35 
36 #   define BOOST_MPL_PP_PARAMS_0(p)
37 #   define BOOST_MPL_PP_PARAMS_1(p) p##1
38 #   define BOOST_MPL_PP_PARAMS_2(p) p##1,p##2
39 #   define BOOST_MPL_PP_PARAMS_3(p) p##1,p##2,p##3
40 #   define BOOST_MPL_PP_PARAMS_4(p) p##1,p##2,p##3,p##4
41 #   define BOOST_MPL_PP_PARAMS_5(p) p##1,p##2,p##3,p##4,p##5
42 #   define BOOST_MPL_PP_PARAMS_6(p) p##1,p##2,p##3,p##4,p##5,p##6
43 #   define BOOST_MPL_PP_PARAMS_7(p) p##1,p##2,p##3,p##4,p##5,p##6,p##7
44 #   define BOOST_MPL_PP_PARAMS_8(p) p##1,p##2,p##3,p##4,p##5,p##6,p##7,p##8
45 #   define BOOST_MPL_PP_PARAMS_9(p) p##1,p##2,p##3,p##4,p##5,p##6,p##7,p##8,p##9
46 
47 #else
48 
49 #   include <boost/preprocessor/comma_if.hpp>
50 #   include <boost/preprocessor/repeat.hpp>
51 #   include <boost/preprocessor/inc.hpp>
52 #   include <boost/preprocessor/cat.hpp>
53 
54 #   define BOOST_MPL_PP_AUX_PARAM_FUNC(unused, i, param) \
55     BOOST_PP_COMMA_IF(i) \
56     BOOST_PP_CAT(param, BOOST_PP_INC(i)) \
57     /**/
58 
59 #   define BOOST_MPL_PP_PARAMS(n, param) \
60     BOOST_PP_REPEAT( \
61           n \
62         , BOOST_MPL_PP_AUX_PARAM_FUNC \
63         , param \
64         ) \
65     /**/
66 
67 #   define BOOST_MPL_PP_PARAMS_Z(z, n, param) \
68     BOOST_PP_REPEAT_ ## z( \
69           n \
70         , BOOST_MPL_PP_AUX_PARAM_FUNC \
71         , param \
72         ) \
73     /**/
74 
75 #endif
76 
77 #endif // BOOST_MPL_AUX_PREPROCESSOR_PARAMS_HPP_INCLUDED
78