| 1 | |
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| 2 | // Copyright Aleksey Gurtovoy 2001-2004 |
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| 3 | // |
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| 4 | // Distributed under the Boost Software License, Version 1.0. |
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| 5 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 6 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | // |
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| 8 | |
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| 9 | // *Preprocessed* version of the main "template_arity.hpp" header |
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| 10 | // -- DO NOT modify by hand! |
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| 11 | |
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| 12 | namespace boost { namespace mpl { namespace aux { |
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| 13 | template< int N > struct arity_tag |
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| 14 | { |
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| 15 | typedef char (&type)[N + 1]; |
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| 16 | }; |
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| 17 | |
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| 18 | template< |
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| 19 | int C1, int C2, int C3, int C4, int C5, int C6 |
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| 20 | > |
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| 21 | struct max_arity |
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| 22 | { |
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| 23 | BOOST_STATIC_CONSTANT(int, value = |
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| 24 | ( C6 > 0 ? C6 : ( C5 > 0 ? C5 : ( C4 > 0 ? C4 : ( C3 > 0 ? C3 : ( C2 > 0 ? C2 : ( C1 > 0 ? C1 : -1 ) ) ) ) ) ) |
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| 25 | ); |
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| 26 | }; |
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| 27 | |
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| 28 | arity_tag<0>::type arity_helper(...); |
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| 29 | |
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| 30 | template< |
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| 31 | template< typename P1 > class F |
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| 32 | , typename T1 |
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| 33 | > |
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| 34 | typename arity_tag<1>::type |
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| 35 | arity_helper(type_wrapper< F<T1> >, arity_tag<1>); |
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| 36 | |
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| 37 | template< |
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| 38 | template< typename P1, typename P2 > class F |
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| 39 | , typename T1, typename T2 |
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| 40 | > |
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| 41 | typename arity_tag<2>::type |
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| 42 | arity_helper(type_wrapper< F< T1,T2 > >, arity_tag<2>); |
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| 43 | |
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| 44 | template< |
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| 45 | template< typename P1, typename P2, typename P3 > class F |
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| 46 | , typename T1, typename T2, typename T3 |
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| 47 | > |
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| 48 | typename arity_tag<3>::type |
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| 49 | arity_helper(type_wrapper< F< T1,T2,T3 > >, arity_tag<3>); |
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| 50 | |
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| 51 | template< |
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| 52 | template< typename P1, typename P2, typename P3, typename P4 > class F |
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| 53 | , typename T1, typename T2, typename T3, typename T4 |
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| 54 | > |
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| 55 | typename arity_tag<4>::type |
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| 56 | arity_helper(type_wrapper< F< T1,T2,T3,T4 > >, arity_tag<4>); |
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| 57 | |
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| 58 | template< |
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| 59 | template< |
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| 60 | typename P1, typename P2, typename P3, typename P4 |
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| 61 | , typename P5 |
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| 62 | > |
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| 63 | class F |
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| 64 | , typename T1, typename T2, typename T3, typename T4, typename T5 |
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| 65 | > |
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| 66 | typename arity_tag<5>::type |
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| 67 | arity_helper(type_wrapper< F< T1,T2,T3,T4,T5 > >, arity_tag<5>); |
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| 68 | |
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| 69 | template< |
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| 70 | template< |
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| 71 | typename P1, typename P2, typename P3, typename P4 |
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| 72 | , typename P5, typename P6 |
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| 73 | > |
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| 74 | class F |
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| 75 | , typename T1, typename T2, typename T3, typename T4, typename T5 |
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| 76 | , typename T6 |
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| 77 | > |
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| 78 | typename arity_tag<6>::type |
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| 79 | arity_helper(type_wrapper< F< T1,T2,T3,T4,T5,T6 > >, arity_tag<6>); |
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| 80 | template< typename F, int N > |
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| 81 | struct template_arity_impl |
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| 82 | { |
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| 83 | BOOST_STATIC_CONSTANT(int, value = |
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| 84 | sizeof(::boost::mpl::aux::arity_helper(type_wrapper<F>(), arity_tag<N>())) - 1 |
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| 85 | ); |
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| 86 | }; |
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| 87 | |
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| 88 | template< typename F > |
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| 89 | struct template_arity |
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| 90 | { |
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| 91 | BOOST_STATIC_CONSTANT(int, value = ( |
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| 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 |
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| 93 | )); |
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| 94 | typedef mpl::int_<value> type; |
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| 95 | }; |
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| 96 | |
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| 97 | }}} |
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| 98 | |
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