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1 | |
2 | // Copyright 2000 John Maddock (john@johnmaddock.co.uk) | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | // | |
7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. | |
8 | ||
9 | #ifndef BOOST_TT_FUNCTION_TRAITS_HPP_INCLUDED | |
10 | #define BOOST_TT_FUNCTION_TRAITS_HPP_INCLUDED | |
11 | ||
12 | #include <boost/config.hpp> | |
13 | #include <boost/type_traits/is_function.hpp> | |
14 | #include <boost/type_traits/add_pointer.hpp> | |
15 | ||
16 | namespace boost { | |
17 | ||
18 | namespace detail { | |
19 | ||
20 | template<typename Function> struct function_traits_helper; | |
21 | ||
22 | template<typename R> | |
23 | struct function_traits_helper<R (*)(void)> | |
24 | { | |
25 | BOOST_STATIC_CONSTANT(unsigned, arity = 0); | |
26 | typedef R result_type; | |
27 | }; | |
28 | ||
29 | template<typename R, typename T1> | |
30 | struct function_traits_helper<R (*)(T1)> | |
31 | { | |
32 | BOOST_STATIC_CONSTANT(unsigned, arity = 1); | |
33 | typedef R result_type; | |
34 | typedef T1 arg1_type; | |
35 | typedef T1 argument_type; | |
36 | }; | |
37 | ||
38 | template<typename R, typename T1, typename T2> | |
39 | struct function_traits_helper<R (*)(T1, T2)> | |
40 | { | |
41 | BOOST_STATIC_CONSTANT(unsigned, arity = 2); | |
42 | typedef R result_type; | |
43 | typedef T1 arg1_type; | |
44 | typedef T2 arg2_type; | |
45 | typedef T1 first_argument_type; | |
46 | typedef T2 second_argument_type; | |
47 | }; | |
48 | ||
49 | template<typename R, typename T1, typename T2, typename T3> | |
50 | struct function_traits_helper<R (*)(T1, T2, T3)> | |
51 | { | |
52 | BOOST_STATIC_CONSTANT(unsigned, arity = 3); | |
53 | typedef R result_type; | |
54 | typedef T1 arg1_type; | |
55 | typedef T2 arg2_type; | |
56 | typedef T3 arg3_type; | |
57 | }; | |
58 | ||
59 | template<typename R, typename T1, typename T2, typename T3, typename T4> | |
60 | struct function_traits_helper<R (*)(T1, T2, T3, T4)> | |
61 | { | |
62 | BOOST_STATIC_CONSTANT(unsigned, arity = 4); | |
63 | typedef R result_type; | |
64 | typedef T1 arg1_type; | |
65 | typedef T2 arg2_type; | |
66 | typedef T3 arg3_type; | |
67 | typedef T4 arg4_type; | |
68 | }; | |
69 | ||
70 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
71 | typename T5> | |
72 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5)> | |
73 | { | |
74 | BOOST_STATIC_CONSTANT(unsigned, arity = 5); | |
75 | typedef R result_type; | |
76 | typedef T1 arg1_type; | |
77 | typedef T2 arg2_type; | |
78 | typedef T3 arg3_type; | |
79 | typedef T4 arg4_type; | |
80 | typedef T5 arg5_type; | |
81 | }; | |
82 | ||
83 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
84 | typename T5, typename T6> | |
85 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6)> | |
86 | { | |
87 | BOOST_STATIC_CONSTANT(unsigned, arity = 6); | |
88 | typedef R result_type; | |
89 | typedef T1 arg1_type; | |
90 | typedef T2 arg2_type; | |
91 | typedef T3 arg3_type; | |
92 | typedef T4 arg4_type; | |
93 | typedef T5 arg5_type; | |
94 | typedef T6 arg6_type; | |
95 | }; | |
96 | ||
97 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
98 | typename T5, typename T6, typename T7> | |
99 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7)> | |
100 | { | |
101 | BOOST_STATIC_CONSTANT(unsigned, arity = 7); | |
102 | typedef R result_type; | |
103 | typedef T1 arg1_type; | |
104 | typedef T2 arg2_type; | |
105 | typedef T3 arg3_type; | |
106 | typedef T4 arg4_type; | |
107 | typedef T5 arg5_type; | |
108 | typedef T6 arg6_type; | |
109 | typedef T7 arg7_type; | |
110 | }; | |
111 | ||
112 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
113 | typename T5, typename T6, typename T7, typename T8> | |
114 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8)> | |
115 | { | |
116 | BOOST_STATIC_CONSTANT(unsigned, arity = 8); | |
117 | typedef R result_type; | |
118 | typedef T1 arg1_type; | |
119 | typedef T2 arg2_type; | |
120 | typedef T3 arg3_type; | |
121 | typedef T4 arg4_type; | |
122 | typedef T5 arg5_type; | |
123 | typedef T6 arg6_type; | |
124 | typedef T7 arg7_type; | |
125 | typedef T8 arg8_type; | |
126 | }; | |
127 | ||
128 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
129 | typename T5, typename T6, typename T7, typename T8, typename T9> | |
130 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9)> | |
131 | { | |
132 | BOOST_STATIC_CONSTANT(unsigned, arity = 9); | |
133 | typedef R result_type; | |
134 | typedef T1 arg1_type; | |
135 | typedef T2 arg2_type; | |
136 | typedef T3 arg3_type; | |
137 | typedef T4 arg4_type; | |
138 | typedef T5 arg5_type; | |
139 | typedef T6 arg6_type; | |
140 | typedef T7 arg7_type; | |
141 | typedef T8 arg8_type; | |
142 | typedef T9 arg9_type; | |
143 | }; | |
144 | ||
145 | template<typename R, typename T1, typename T2, typename T3, typename T4, | |
146 | typename T5, typename T6, typename T7, typename T8, typename T9, | |
147 | typename T10> | |
148 | struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)> | |
149 | { | |
150 | BOOST_STATIC_CONSTANT(unsigned, arity = 10); | |
151 | typedef R result_type; | |
152 | typedef T1 arg1_type; | |
153 | typedef T2 arg2_type; | |
154 | typedef T3 arg3_type; | |
155 | typedef T4 arg4_type; | |
156 | typedef T5 arg5_type; | |
157 | typedef T6 arg6_type; | |
158 | typedef T7 arg7_type; | |
159 | typedef T8 arg8_type; | |
160 | typedef T9 arg9_type; | |
161 | typedef T10 arg10_type; | |
162 | }; | |
163 | ||
164 | } // end namespace detail | |
165 | ||
166 | template<typename Function> | |
167 | struct function_traits : | |
168 | public boost::detail::function_traits_helper<typename boost::add_pointer<Function>::type> | |
169 | { | |
170 | }; | |
171 | ||
172 | } | |
173 | ||
174 | #endif // BOOST_TT_FUNCTION_TRAITS_HPP_INCLUDED |