240 lines
7.0 KiB
C++
240 lines
7.0 KiB
C++
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// (C) Copyright Edward Diener 2011,2012,2013
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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#if !defined(BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP)
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#define BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP
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#include <boost/config.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/has_xxx.hpp>
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#include <boost/preprocessor/arithmetic/add.hpp>
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#include <boost/preprocessor/arithmetic/sub.hpp>
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#include <boost/preprocessor/array/elem.hpp>
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/punctuation/comma_if.hpp>
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#include <boost/preprocessor/repetition/repeat.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/preprocessor/array/enum.hpp>
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#include <boost/preprocessor/array/size.hpp>
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#include <boost/type_traits/is_class.hpp>
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#if !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
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#define BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS(z,n,args) \
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BOOST_PP_ARRAY_ELEM(BOOST_PP_ADD(4,n),args) \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION(args,introspect_macro) \
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template \
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< \
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typename BOOST_TTI_DETAIL_TP_T, \
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typename BOOST_TTI_DETAIL_TP_FALLBACK_ \
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= boost::mpl::bool_< BOOST_PP_ARRAY_ELEM(3, args) > \
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> \
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struct BOOST_PP_ARRAY_ELEM(0, args) \
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{ \
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private: \
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introspect_macro(args) \
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public: \
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static const bool value \
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= BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args)< BOOST_TTI_DETAIL_TP_T >::value; \
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typedef typename BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
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< \
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BOOST_TTI_DETAIL_TP_T \
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>::type type; \
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}; \
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/**/
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#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#define BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE(z,n,args) \
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template \
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< \
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template \
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< \
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BOOST_PP_ENUM_ ## z \
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( \
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BOOST_PP_SUB \
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( \
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BOOST_PP_ARRAY_SIZE(args), \
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4 \
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), \
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BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS, \
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args \
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) \
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> \
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class BOOST_TTI_DETAIL_TM_V \
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> \
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struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_NAME(args, n) \
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{ \
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}; \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE(args) \
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BOOST_PP_REPEAT \
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( \
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BOOST_PP_ARRAY_ELEM(2, args), \
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BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE, \
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args \
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) \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT(args) \
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template< typename U > \
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struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
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{ \
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BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE(args) \
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BOOST_MPL_HAS_MEMBER_REJECT(args, BOOST_PP_NIL) \
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BOOST_MPL_HAS_MEMBER_ACCEPT(args, BOOST_PP_NIL) \
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BOOST_STATIC_CONSTANT \
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( \
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bool, value = BOOST_MPL_HAS_MEMBER_TEST(args) \
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); \
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typedef boost::mpl::bool_< value > type; \
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}; \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_WITH_FUNCTION_SFINAE(args) \
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BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION \
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( \
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args, \
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BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT \
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) \
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/**/
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#else // !!BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#define BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE_WITH_TEMPLATE_SFINAE(z,n,args) \
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template \
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< \
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template \
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< \
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BOOST_PP_ENUM_ ## z \
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( \
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BOOST_PP_SUB \
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( \
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BOOST_PP_ARRAY_SIZE(args), \
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4 \
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), \
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BOOST_TTI_DETAIL_TEMPLATE_PARAMETERS, \
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args \
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) \
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> \
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class BOOST_TTI_DETAIL_TM_U \
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> \
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struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_NAME_WITH_TEMPLATE_SFINAE \
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( \
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args, \
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n \
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) \
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{ \
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typedef \
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BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_TAG_NAME(args) \
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type; \
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}; \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE_WITH_TEMPLATE_SFINAE(args) \
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typedef void \
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BOOST_MPL_HAS_MEMBER_INTROSPECTION_SUBSTITUTE_TAG_NAME(args); \
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BOOST_PP_REPEAT \
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( \
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BOOST_PP_ARRAY_ELEM(2, args), \
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BOOST_TTI_DETAIL_HAS_MEMBER_MULTI_SUBSTITUTE_WITH_TEMPLATE_SFINAE, \
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args \
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) \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT_WITH_TEMPLATE_SFINAE(args) \
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BOOST_MPL_HAS_MEMBER_REJECT_WITH_TEMPLATE_SFINAE(args,BOOST_PP_NIL) \
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BOOST_MPL_HAS_MEMBER_ACCEPT_WITH_TEMPLATE_SFINAE(args,BOOST_PP_NIL) \
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template< typename BOOST_TTI_DETAIL_TP_U > \
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struct BOOST_MPL_HAS_MEMBER_INTROSPECTION_NAME(args) \
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: BOOST_MPL_HAS_MEMBER_INTROSPECTION_TEST_NAME(args)< BOOST_TTI_DETAIL_TP_U > { \
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}; \
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/**/
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#define BOOST_TTI_DETAIL_HAS_MEMBER_WITH_TEMPLATE_SFINAE(args) \
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BOOST_TTI_DETAIL_HAS_MEMBER_SUBSTITUTE_WITH_TEMPLATE_SFINAE \
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( \
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args \
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) \
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BOOST_TTI_DETAIL_HAS_MEMBER_IMPLEMENTATION \
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( \
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args, \
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BOOST_TTI_DETAIL_HAS_MEMBER_INTROSPECT_WITH_TEMPLATE_SFINAE \
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) \
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/**/
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#endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#else // defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
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#define BOOST_TTI_DETAIL_SAME(trait,name) \
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BOOST_MPL_HAS_XXX_TEMPLATE_NAMED_DEF \
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( \
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trait, \
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name, \
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false \
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) \
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/**/
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#define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tp) \
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BOOST_TTI_DETAIL_SAME(trait,name) \
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/**/
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#endif // !BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE
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#define BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS_OP(trait,name,tpArray) \
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BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(BOOST_PP_CAT(trait,_detail),name,tpArray) \
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template<class BOOST_TTI_DETAIL_TP_T> \
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struct BOOST_PP_CAT(trait,_detail_cp_op) : \
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BOOST_PP_CAT(trait,_detail)<BOOST_TTI_DETAIL_TP_T> \
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{ \
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}; \
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/**/
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#define BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
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BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_CHECK_PARAMS_OP(trait,name,tpArray) \
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template<class BOOST_TTI_DETAIL_TP_T> \
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struct trait \
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{ \
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typedef typename \
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boost::mpl::eval_if \
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< \
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boost::is_class<BOOST_TTI_DETAIL_TP_T>, \
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BOOST_PP_CAT(trait,_detail_cp_op)<BOOST_TTI_DETAIL_TP_T>, \
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boost::mpl::false_ \
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>::type type; \
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BOOST_STATIC_CONSTANT(bool,value=type::value); \
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}; \
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/**/
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#if !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
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#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
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BOOST_TTI_DETAIL_HAS_MEMBER_WITH_FUNCTION_SFINAE \
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( \
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( BOOST_PP_ADD(BOOST_PP_ARRAY_SIZE(tpArray),4), ( trait, name, 1, false, BOOST_PP_ARRAY_ENUM(tpArray) ) ) \
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) \
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/**/
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#else // BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#define BOOST_TTI_DETAIL_TRAIT_CALL_HAS_TEMPLATE_CHECK_PARAMS(trait,name,tpArray) \
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BOOST_TTI_DETAIL_HAS_MEMBER_WITH_TEMPLATE_SFINAE \
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( \
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( BOOST_PP_ADD(BOOST_PP_ARRAY_SIZE(tpArray),4), ( trait, name, 1, false, BOOST_PP_ARRAY_ENUM(tpArray) ) ) \
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) \
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/**/
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#endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
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#endif // !defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
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#endif // BOOST_TTI_DETAIL_TEMPLATE_PARAMS_HPP
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