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).
7 #if !defined(BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP)
8 #define BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP
10 #include <boost/config.hpp>
11 #include <boost/mpl/bool.hpp>
12 #include <boost/mpl/eval_if.hpp>
13 #include <boost/mpl/has_xxx.hpp>
14 #include <boost/preprocessor/arithmetic/add.hpp>
15 #include <boost/preprocessor/arithmetic/sub.hpp>
16 #include <boost/preprocessor/array/elem.hpp>
17 #include <boost/preprocessor/cat.hpp>
18 #include <boost/preprocessor/punctuation/comma_if.hpp>
19 #include <boost/preprocessor/repetition/repeat.hpp>
20 #include <boost/preprocessor/repetition/enum.hpp>
21 #include <boost/preprocessor/array/enum.hpp>
22 #include <boost/preprocessor/array/size.hpp>
23 #include <boost/type_traits/is_class.hpp>
25 #if !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
27 #define BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS(z,n,args) \
28 BOOST_PP_ARRAY_ELEM(BOOST_PP_ADD(4,n),args) \
31 #define BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION(args,introspect_macro) \
34 typename BOOST_TTI_DETAIL_TP_T, \
35 typename BOOST_TTI_DETAIL_TP_FALLBACK_ \
36 = boost::mpl::bool_< BOOST_PP_ARRAY_ELEM(3, args) > \
38 struct BOOST_PP_ARRAY_ELEM(0, args) \
41 introspect_macro(args) \
43 static const bool value \
44 = BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args)< BOOST_TTI_DETAIL_TP_T >::value; \
45 typedef typename BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
47 BOOST_TTI_DETAIL_TP_T \
52 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
54 #define BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE(z,n,args) \
63 BOOST_PP_ARRAY_SIZE(args), \
66 BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS, \
70 class BOOST_TTI_DETAIL_TM_V \
72 struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_NAME(args, n) \
77 #define BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE(args) \
80 BOOST_PP_ARRAY_ELEM(2, args), \
81 BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE, \
86 #define BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT(args) \
87 template< typename U > \
88 struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
90 BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE(args) \
91 BOOST_MPL_HAS_MEMBER_REJECT(args, BOOST_PP_NIL) \
92 BOOST_MPL_HAS_MEMBER_ACCEPT(args, BOOST_PP_NIL) \
93 BOOST_STATIC_CONSTANT \
95 bool, value = BOOST_MPL_HAS_MEMBER_TEST(args) \
97 typedef boost::mpl::bool_< value > type; \
101 #define BOOST_TTI_DETAIL_HAS_MEMBER_WITH_FUNCTION_SFINAE(args) \
102 BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION \
105 BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT \
109 #else // !!BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
111 #define BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE_WITH_TEMPLATE_SFINAE(z,n,args) \
116 BOOST_PP_ENUM_ ## z \
120 BOOST_PP_ARRAY_SIZE(args), \
123 BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS, \
127 class BOOST_TTI_DETAIL_TM_U \
129 struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_NAME_WITH_TEMPLATE_SFINAE \
136 BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_TAG_NAME(args) \
141 #define BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE_WITH_TEMPLATE_SFINAE(args) \
143 BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_TAG_NAME(args); \
146 BOOST_PP_ARRAY_ELEM(2, args), \
147 BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE_WITH_TEMPLATE_SFINAE, \
152 #define BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT_WITH_TEMPLATE_SFINAE(args) \
153 BOOST_MPL_HAS_MEMBER_REJECT_WITH_TEMPLATE_SFINAE(args,BOOST_PP_NIL) \
154 BOOST_MPL_HAS_MEMBER_ACCEPT_WITH_TEMPLATE_SFINAE(args,BOOST_PP_NIL) \
155 template< typename BOOST_TTI_DETAIL_TP_U > \
156 struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
157 : BOOST_MPL_HAS_MEMBER_INTROSPECTION_TEST_NAME(args)< BOOST_TTI_DETAIL_TP_U > { \
161 #define BOOST_TTI_DETAIL_HAS_MEMBER_WITH_TEMPLATE_SFINAE(args) \
162 BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE_WITH_TEMPLATE_SFINAE \
166 BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION \
169 BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT_WITH_TEMPLATE_SFINAE \
173 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
175 #else // defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
177 #define BOOST_TTI_DETAIL_SAME(trait,name) \
178 BOOST_MPL_HAS_XXX_TEMPLATE_NAMED_DEF \
186 #define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tp) \
187 BOOST_TTI_DETAIL_SAME(trait,name) \
190 #endif // !BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE
192 #define BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS_OP(trait,name,tpArray) \
193 BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(BOOST_PP_CAT(trait,_detail),name,tpArray) \
194 template<class BOOST_TTI_DETAIL_TP_T> \
195 struct BOOST_PP_CAT(trait,_detail_cp_op) : \
196 BOOST_PP_CAT(trait,_detail)<BOOST_TTI_DETAIL_TP_T> \
201 #define BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
202 BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS_OP(trait,name,tpArray) \
203 template<class BOOST_TTI_DETAIL_TP_T> \
207 boost::mpl::eval_if \
209 boost::is_class<BOOST_TTI_DETAIL_TP_T>, \
210 BOOST_PP_CAT(trait,_detail_cp_op)<BOOST_TTI_DETAIL_TP_T>, \
213 BOOST_STATIC_CONSTANT(bool,value=type::value); \
217 #if !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
218 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
220 #define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
221 BOOST_TTI_DETAIL_HAS_MEMBER_WITH_FUNCTION_SFINAE \
223 ( BOOST_PP_ADD(BOOST_PP_ARRAY_SIZE(tpArray),4), ( trait, name, 1, false, BOOST_PP_ARRAY_ENUM(tpArray) ) ) \
227 #else // BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
229 #define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
230 BOOST_TTI_DETAIL_HAS_MEMBER_WITH_TEMPLATE_SFINAE \
232 ( BOOST_PP_ADD(BOOST_PP_ARRAY_SIZE(tpArray),4), ( trait, name, 1, false, BOOST_PP_ARRAY_ENUM(tpArray) ) ) \
236 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
237 #endif // !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
239 #endif // BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP