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1 | ||
2 | // (C) Copyright Edward Diener 2011,2012,2013 | |
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 | #if !defined(BOOST_TTI_DETAIL_VM_TEMPLATE_PARAMS_HPP) | |
8 | #define BOOST_TTI_DETAIL_VM_TEMPLATE_PARAMS_HPP | |
9 | ||
10 | #include <boost/config.hpp> | |
11 | #include <boost/preprocessor/config/config.hpp> | |
12 | ||
13 | #if BOOST_PP_VARIADICS | |
14 | ||
15 | #include <boost/mpl/eval_if.hpp> | |
16 | #include <boost/mpl/has_xxx.hpp> | |
17 | #include <boost/mpl/identity.hpp> | |
18 | #include <boost/preprocessor/arithmetic/add.hpp> | |
19 | #include <boost/preprocessor/variadic/size.hpp> | |
20 | #include <boost/preprocessor/cat.hpp> | |
21 | #include <boost/preprocessor/comparison/equal.hpp> | |
22 | #include <boost/preprocessor/control/iif.hpp> | |
23 | #include <boost/preprocessor/detail/is_binary.hpp> | |
24 | #include <boost/preprocessor/facilities/is_empty.hpp> | |
25 | #include <boost/preprocessor/seq/enum.hpp> | |
26 | #include <boost/preprocessor/seq/seq.hpp> | |
27 | #include <boost/preprocessor/variadic/elem.hpp> | |
28 | #include <boost/preprocessor/variadic/to_seq.hpp> | |
29 | #include <boost/tti/detail/dtemplate.hpp> | |
30 | #include <boost/tti/detail/dtemplate_params.hpp> | |
31 | #include <boost/tti/detail/denclosing_type.hpp> | |
32 | #include <boost/tti/gen/namespace_gen.hpp> | |
33 | ||
34 | #if !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE) | |
35 | #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1400) | |
36 | ||
37 | #define BOOST_TTI_DETAIL_VM_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,...) \ | |
38 | BOOST_TTI_DETAIL_HAS_MEMBER_WITH_FUNCTION_SFINAE \ | |
39 | ( \ | |
40 | ( BOOST_PP_ADD(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),4), ( trait, name, 1, false, __VA_ARGS__ ) ) \ | |
41 | ) \ | |
42 | /**/ | |
43 | ||
44 | #else // !!BOOST_WORKAROUND(BOOST_MSVC, <= 1400) | |
45 | ||
46 | #define BOOST_TTI_DETAIL_VM_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,...) \ | |
47 | BOOST_TTI_DETAIL_HAS_MEMBER_WITH_TEMPLATE_SFINAE \ | |
48 | ( \ | |
49 | ( BOOST_PP_ADD(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),4), ( trait, name, 1, false, __VA_ARGS__ ) ) \ | |
50 | ) \ | |
51 | /**/ | |
52 | ||
53 | #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1400) | |
54 | #else // defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE) | |
55 | ||
56 | #define BOOST_TTI_DETAIL_VM_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,...) \ | |
57 | BOOST_TTI_DETAIL_SAME(trait,name) \ | |
58 | /**/ | |
59 | ||
60 | #endif // !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE) | |
61 | ||
62 | #define BOOST_TTI_DETAIL_VM_CHECK_MORE_THAN_TWO(trait,...) \ | |
63 | BOOST_PP_IIF \ | |
64 | ( \ | |
65 | BOOST_PP_EQUAL \ | |
66 | ( \ | |
67 | BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), \ | |
68 | 2 \ | |
69 | ), \ | |
70 | BOOST_TTI_DETAIL_VM_TRAIT_CHOOSE_FROM_TWO, \ | |
71 | BOOST_TTI_DETAIL_VM_TRAIT_EXPAND_ARGUMENTS \ | |
72 | ) \ | |
73 | (trait,__VA_ARGS__) \ | |
74 | /**/ | |
75 | ||
76 | #define BOOST_TTI_DETAIL_VM_TRAIT_CHOOSE_FROM_TWO(trait,...) \ | |
77 | BOOST_PP_IIF \ | |
78 | ( \ | |
79 | BOOST_PP_IS_BINARY \ | |
80 | ( \ | |
81 | BOOST_PP_VARIADIC_ELEM(1,__VA_ARGS__) \ | |
82 | ), \ | |
83 | BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS, \ | |
84 | BOOST_TTI_DETAIL_VM_TRAIT_CHOOSE_IF_NIL \ | |
85 | ) \ | |
86 | ( \ | |
87 | trait, \ | |
88 | BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__), \ | |
89 | BOOST_PP_VARIADIC_ELEM(1,__VA_ARGS__) \ | |
90 | ) \ | |
91 | /**/ | |
92 | ||
93 | #define BOOST_TTI_DETAIL_VM_IS_NIL(param) \ | |
94 | BOOST_PP_IS_EMPTY \ | |
95 | ( \ | |
96 | BOOST_PP_CAT(BOOST_TTI_DETAIL_IS_HELPER_,param) \ | |
97 | ) \ | |
98 | /**/ | |
99 | ||
100 | #define BOOST_TTI_DETAIL_VM_TRAIT_CHOOSE_IF_NIL(trait,name,param) \ | |
101 | BOOST_PP_IIF \ | |
102 | ( \ | |
103 | BOOST_TTI_DETAIL_VM_IS_NIL(param), \ | |
104 | BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE, \ | |
105 | BOOST_TTI_DETAIL_VM_CALL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS \ | |
106 | ) \ | |
107 | (trait,name,param) \ | |
108 | /**/ | |
109 | ||
110 | #define BOOST_TTI_DETAIL_VM_VARIADIC_TAIL(...) \ | |
111 | BOOST_PP_SEQ_ENUM \ | |
112 | ( \ | |
113 | BOOST_PP_SEQ_TAIL \ | |
114 | ( \ | |
115 | BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__) \ | |
116 | ) \ | |
117 | ) \ | |
118 | /**/ | |
119 | ||
120 | #define BOOST_TTI_DETAIL_VM_TRAIT_EXPAND_ARGUMENTS(trait,...) \ | |
121 | BOOST_TTI_DETAIL_VM_CALL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS \ | |
122 | ( \ | |
123 | trait, \ | |
124 | BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__), \ | |
125 | BOOST_TTI_DETAIL_VM_VARIADIC_TAIL(__VA_ARGS__) \ | |
126 | ) \ | |
127 | /**/ | |
128 | ||
129 | #define BOOST_TTI_DETAIL_VM_TRAIT_HAS_TEMPLATE(trait,...) \ | |
130 | BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE \ | |
131 | ( \ | |
132 | trait, \ | |
133 | BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__), \ | |
134 | BOOST_PP_NIL \ | |
135 | ) \ | |
136 | /**/ | |
137 | ||
138 | #define BOOST_TTI_DETAIL_VM_CT_INVOKE(trait,name,...) \ | |
139 | BOOST_TTI_DETAIL_VM_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(BOOST_PP_CAT(trait,_detail),name,__VA_ARGS__) \ | |
140 | template<class BOOST_TTI_DETAIL_TP_T> \ | |
141 | struct BOOST_PP_CAT(trait,_detail_vm_ct_invoke) : \ | |
142 | BOOST_PP_CAT(trait,_detail)<BOOST_TTI_DETAIL_TP_T> \ | |
143 | { \ | |
144 | }; \ | |
145 | /**/ | |
146 | ||
147 | #define BOOST_TTI_DETAIL_VM_CALL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,...) \ | |
148 | BOOST_TTI_DETAIL_VM_CT_INVOKE(trait,name,__VA_ARGS__) \ | |
149 | template<class BOOST_TTI_DETAIL_TP_T> \ | |
150 | struct trait \ | |
151 | { \ | |
152 | typedef typename \ | |
153 | boost::mpl::eval_if \ | |
154 | < \ | |
155 | BOOST_TTI_NAMESPACE::detail::enclosing_type<BOOST_TTI_DETAIL_TP_T>, \ | |
156 | BOOST_PP_CAT(trait,_detail_vm_ct_invoke)<BOOST_TTI_DETAIL_TP_T>, \ | |
157 | boost::mpl::false_ \ | |
158 | >::type type; \ | |
159 | BOOST_STATIC_CONSTANT(bool,value=type::value); \ | |
160 | }; \ | |
161 | /**/ | |
162 | ||
163 | #endif // BOOST_PP_VARIADICS | |
164 | ||
165 | #endif // BOOST_TTI_DETAIL_VM_TEMPLATE_PARAMS_HPP |