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_FUNCTION_HPP)
8#define BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION_HPP
9
10#include <boost/config.hpp>
11#include <boost/function_types/property_tags.hpp>
12#include <boost/mpl/vector.hpp>
13#include <boost/preprocessor/cat.hpp>
14#include <boost/tti/detail/dstatic_mem_fun.hpp>
15#include <boost/tti/gen/has_static_member_function_gen.hpp>
16
17/*
18
19 The succeeding comments in this file are in doxygen format.
20
21*/
22
23/** \file
24*/
25
26/// A macro which expands to a metafunction which tests whether a static member function with a particular name and signature exists.
27/**
28
29 BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_FUNCTION is a macro which expands to a metafunction.
30 The metafunction tests whether a static member function with a particular name
31 and signature exists. The macro takes the form of BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_FUNCTION(trait,name) where
32
33 trait = the name of the metafunction <br/>
34 name = the name of the inner member.
35
36 BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_FUNCTION generates a metafunction called "trait" where 'trait' is the macro parameter.
37
38 @code
39
40 template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS,class BOOST_TTI_TP_TAG>
41 struct trait
42 {
43 static const value = unspecified;
44 typedef mpl::bool_<true-or-false> type;
45 };
46
47 The metafunction types and return:
48
49 BOOST_TTI_TP_T = the enclosing type in which to look for our 'name'.
50 The enclosing type can be a class, struct, or union.
51
52 BOOST_TTI_TP_R = the return type of the static member function
53 OR
54 the signature of a function in the form of Return_Type ( Parameter_Types )
55
56 BOOST_TTI_TP_FS = (optional) the parameters of the static member function as a boost::mpl forward sequence
57 if the second parameter is a return type and the function parameters exist.
58
59 BOOST_TTI_TP_TAG = (optional) a boost::function_types tag to apply to the static member function
60 if the second parameter is a return type and the need for a tag exists.
61
62 returns = 'value' is true if the 'name' exists,
63 with the appropriate static member function type,
64 otherwise 'value' is false.
65
66 @endcode
67
68*/
69#define BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_FUNCTION(trait,name) \
70 BOOST_TTI_DETAIL_TRAIT_HAS_STATIC_MEMBER_FUNCTION(trait,name) \
71 template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS = boost::mpl::vector<>,class BOOST_TTI_TP_TAG = boost::function_types::null_tag> \
72 struct trait \
73 { \
74 typedef typename \
75 BOOST_PP_CAT(trait,_detail_hsmf)<BOOST_TTI_TP_T,BOOST_TTI_TP_R,BOOST_TTI_TP_FS,BOOST_TTI_TP_TAG>::type type; \
76 BOOST_STATIC_CONSTANT(bool,value=type::value); \
77 }; \
78/**/
79
80/// A macro which expands to a metafunction which tests whether a static member function with a particular name and signature exists.
81/**
82
83 BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION is a macro which expands to a metafunction.
84 The metafunction tests whether a static member function with a particular name
85 and signature exists. The macro takes the form of BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION(name) where
86
87 name = the name of the inner member.
88
89 BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION generates a metafunction called "has_static_member_function_name" where 'name' is the macro parameter.
90
91 @code
92
93 template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS,class BOOST_TTI_TP_TAG>
94 struct has_static_member_function_'name'
95 {
96 static const value = unspecified;
97 typedef mpl::bool_<true-or-false> type;
98 };
99
100 The metafunction types and return:
101
102 BOOST_TTI_TP_T = the enclosing type in which to look for our 'name'.
103 The enclosing type can be a class, struct, or union.
104
105 BOOST_TTI_TP_R = the return type of the static member function
106 OR
107 the signature of a function in the form of Return_Type ( Parameter_Types )
108
109 BOOST_TTI_TP_FS = (optional) the parameters of the static member function as a boost::mpl forward sequence
110 if the second parameter is a return type and the function parameters exist.
111
112 BOOST_TTI_TP_TAG = (optional) a boost::function_types tag to apply to the static member function
113 if the second parameter is a return type and the need for a tag exists.
114
115 returns = 'value' is true if the 'name' exists,
116 with the appropriate static member function type,
117 otherwise 'value' is false.
118
119 @endcode
120
121*/
122#define BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION(name) \
123 BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_FUNCTION \
124 ( \
125 BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION_GEN(name), \
126 name \
127 ) \
128/**/
129
130#endif // BOOST_TTI_HAS_STATIC_MEMBER_FUNCTION_HPP
131

source code of boost/libs/tti/include/boost/tti/has_static_member_function.hpp