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1 | ||
2 | // Copyright Aleksey Gurtovoy 2001-2004 | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0. | |
5 | // (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | ||
9 | // *Preprocessed* version of the main "template_arity.hpp" header | |
10 | // -- DO NOT modify by hand! | |
11 | ||
12 | namespace boost { namespace mpl { namespace aux { | |
13 | template< int N > struct arity_tag | |
14 | { | |
15 | typedef char (&type)[N + 1]; | |
16 | }; | |
17 | ||
18 | template< | |
19 | int C1, int C2, int C3, int C4, int C5, int C6 | |
20 | > | |
21 | struct max_arity | |
22 | { | |
23 | BOOST_STATIC_CONSTANT(int, value = | |
24 | ( C6 > 0 ? C6 : ( C5 > 0 ? C5 : ( C4 > 0 ? C4 : ( C3 > 0 ? C3 : ( C2 > 0 ? C2 : ( C1 > 0 ? C1 : -1 ) ) ) ) ) ) | |
25 | ); | |
26 | }; | |
27 | ||
28 | arity_tag<0>::type arity_helper(...); | |
29 | ||
30 | template< | |
31 | template< typename P1 > class F | |
32 | , typename T1 | |
33 | > | |
34 | typename arity_tag<1>::type | |
35 | arity_helper(type_wrapper< F<T1> >, arity_tag<1>); | |
36 | ||
37 | template< | |
38 | template< typename P1, typename P2 > class F | |
39 | , typename T1, typename T2 | |
40 | > | |
41 | typename arity_tag<2>::type | |
42 | arity_helper(type_wrapper< F< T1,T2 > >, arity_tag<2>); | |
43 | ||
44 | template< | |
45 | template< typename P1, typename P2, typename P3 > class F | |
46 | , typename T1, typename T2, typename T3 | |
47 | > | |
48 | typename arity_tag<3>::type | |
49 | arity_helper(type_wrapper< F< T1,T2,T3 > >, arity_tag<3>); | |
50 | ||
51 | template< | |
52 | template< typename P1, typename P2, typename P3, typename P4 > class F | |
53 | , typename T1, typename T2, typename T3, typename T4 | |
54 | > | |
55 | typename arity_tag<4>::type | |
56 | arity_helper(type_wrapper< F< T1,T2,T3,T4 > >, arity_tag<4>); | |
57 | ||
58 | template< | |
59 | template< | |
60 | typename P1, typename P2, typename P3, typename P4 | |
61 | , typename P5 | |
62 | > | |
63 | class F | |
64 | , typename T1, typename T2, typename T3, typename T4, typename T5 | |
65 | > | |
66 | typename arity_tag<5>::type | |
67 | arity_helper(type_wrapper< F< T1,T2,T3,T4,T5 > >, arity_tag<5>); | |
68 | ||
69 | template< | |
70 | template< | |
71 | typename P1, typename P2, typename P3, typename P4 | |
72 | , typename P5, typename P6 | |
73 | > | |
74 | class F | |
75 | , typename T1, typename T2, typename T3, typename T4, typename T5 | |
76 | , typename T6 | |
77 | > | |
78 | typename arity_tag<6>::type | |
79 | arity_helper(type_wrapper< F< T1,T2,T3,T4,T5,T6 > >, arity_tag<6>); | |
80 | template< typename F, int N > | |
81 | struct template_arity_impl | |
82 | { | |
83 | BOOST_STATIC_CONSTANT(int, value = | |
84 | sizeof(::boost::mpl::aux::arity_helper(type_wrapper<F>(), arity_tag<N>())) - 1 | |
85 | ); | |
86 | }; | |
87 | ||
88 | template< typename F > | |
89 | struct template_arity | |
90 | { | |
91 | BOOST_STATIC_CONSTANT(int, value = ( | |
92 | max_arity< template_arity_impl< F,1 >::value, template_arity_impl< F,2 >::value, template_arity_impl< F,3 >::value, template_arity_impl< F,4 >::value, template_arity_impl< F,5 >::value, template_arity_impl< F,6 >::value >::value | |
93 | )); | |
94 | typedef mpl::int_<value> type; | |
95 | }; | |
96 | ||
97 | }}} |