2 // Copyright Aleksey Gurtovoy 2001-2004
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)
9 // Preprocessed version of "boost/mpl/aux_/template_arity.hpp" header
10 // -- DO NOT modify by hand!
12 namespace boost { namespace mpl { namespace aux {
14 template< int N > struct arity_tag
16 typedef char (&type)[N + 1];
20 int C1, int C2, int C3, int C4, int C5, int C6
24 BOOST_STATIC_CONSTANT(int, value =
25 ( C6 > 0 ? C6 : ( C5 > 0 ? C5 : ( C4 > 0 ? C4 : ( C3 > 0 ? C3 : ( C2 > 0 ? C2 : ( C1 > 0 ? C1 : -1 ) ) ) ) ) )
30 arity_tag<0>::type arity_helper(...);
33 template< typename P1 > class F
36 typename arity_tag<1>::type
37 arity_helper(type_wrapper< F<T1> >, arity_tag<1>);
40 template< typename P1, typename P2 > class F
41 , typename T1, typename T2
43 typename arity_tag<2>::type
44 arity_helper(type_wrapper< F< T1,T2 > >, arity_tag<2>);
47 template< typename P1, typename P2, typename P3 > class F
48 , typename T1, typename T2, typename T3
50 typename arity_tag<3>::type
51 arity_helper(type_wrapper< F< T1,T2,T3 > >, arity_tag<3>);
54 template< typename P1, typename P2, typename P3, typename P4 > class F
55 , typename T1, typename T2, typename T3, typename T4
57 typename arity_tag<4>::type
58 arity_helper(type_wrapper< F< T1,T2,T3,T4 > >, arity_tag<4>);
62 typename P1, typename P2, typename P3, typename P4
66 , typename T1, typename T2, typename T3, typename T4, typename T5
68 typename arity_tag<5>::type
69 arity_helper(type_wrapper< F< T1,T2,T3,T4,T5 > >, arity_tag<5>);
73 typename P1, typename P2, typename P3, typename P4
74 , typename P5, typename P6
77 , typename T1, typename T2, typename T3, typename T4, typename T5
80 typename arity_tag<6>::type
81 arity_helper(type_wrapper< F< T1,T2,T3,T4,T5,T6 > >, arity_tag<6>);
82 template< typename F, int N >
83 struct template_arity_impl
85 BOOST_STATIC_CONSTANT(int, value =
86 sizeof(arity_helper(type_wrapper<F>(), arity_tag<N>())) - 1
90 template< typename F >
93 BOOST_STATIC_CONSTANT(int, value = (
94 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
98 typedef mpl::int_<value> type;