]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
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_HAS_STATIC_MEMBER_DATA_HPP) | |
8 | #define BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP | |
9 | ||
10 | #include <boost/config.hpp> | |
11 | #include <boost/preprocessor/cat.hpp> | |
12 | #include <boost/tti/gen/has_static_member_data_gen.hpp> | |
13 | #include <boost/tti/detail/dstatic_mem_data.hpp> | |
14 | ||
15 | /* | |
16 | ||
17 | The succeeding comments in this file are in doxygen format. | |
18 | ||
19 | */ | |
20 | ||
21 | /** \file | |
22 | */ | |
23 | ||
24 | /// Expands to a metafunction which tests whether a static member data with a particular name and type exists. | |
25 | /** | |
26 | ||
27 | trait = the name of the metafunction within the tti namespace. | |
28 | ||
29 | name = the name of the inner member. | |
30 | ||
31 | generates a metafunction called "trait" where 'trait' is the macro parameter. | |
32 | ||
33 | The metafunction types and return: | |
34 | ||
35 | BOOST_TTI_TP_T = the enclosing type. | |
36 | ||
37 | BOOST_TTI_TP_TYPE = the static member data type, | |
38 | in the form of a data type, | |
39 | in which to look for our 'name'. | |
40 | ||
41 | returns = 'value' is true if the 'name' exists, | |
42 | with the BOOST_TTI_TP_TYPE type, | |
43 | within the enclosing BOOST_TTI_TP_T type, | |
44 | otherwise 'value' is false. | |
45 | ||
46 | */ | |
47 | #define BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \ | |
48 | BOOST_TTI_DETAIL_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \ | |
49 | template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE> \ | |
50 | struct trait \ | |
51 | { \ | |
52 | typedef typename \ | |
53 | BOOST_PP_CAT(trait,_detail_hsd)<BOOST_TTI_TP_T,BOOST_TTI_TP_TYPE>::type type; \ | |
54 | BOOST_STATIC_CONSTANT(bool,value=type::value); \ | |
55 | }; \ | |
56 | /**/ | |
57 | ||
58 | /// Expands to a metafunction which tests whether a static member data with a particular name and type exists. | |
59 | /** | |
60 | ||
61 | name = the name of the inner member. | |
62 | ||
63 | generates a metafunction called "has_static_member_data_name" where 'name' is the macro parameter. | |
64 | ||
65 | The metafunction types and return: | |
66 | ||
67 | BOOST_TTI_TP_T = the enclosing type. | |
68 | ||
69 | BOOST_TTI_TP_TYPE = the static member data type, | |
70 | in the form of a data type, | |
71 | in which to look for our 'name'. | |
72 | ||
73 | returns = 'value' is true if the 'name' exists, | |
74 | with the appropriate BOOST_TTI_TP_TYPE type, | |
75 | within the enclosing BOOST_TTI_TP_T type, | |
76 | otherwise 'value' is false. | |
77 | ||
78 | */ | |
79 | #define BOOST_TTI_HAS_STATIC_MEMBER_DATA(name) \ | |
80 | BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA \ | |
81 | ( \ | |
82 | BOOST_TTI_HAS_STATIC_MEMBER_DATA_GEN(name), \ | |
83 | name \ | |
84 | ) \ | |
85 | /**/ | |
86 | ||
87 | #endif // BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP |