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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