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67 lines
2.0 KiB
67 lines
2.0 KiB
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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_HPP) |
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#define BOOST_TTI_DETAIL_TEMPLATE_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/cat.hpp> |
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#include <boost/preprocessor/debug/assert.hpp> |
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#include <boost/preprocessor/facilities/is_empty.hpp> |
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#include <boost/type_traits/is_class.hpp> |
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#define BOOST_TTI_DETAIL_IS_HELPER_BOOST_PP_NIL |
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#define BOOST_TTI_DETAIL_IS_NIL(param) \ |
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BOOST_PP_IS_EMPTY \ |
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( \ |
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BOOST_PP_CAT(BOOST_TTI_DETAIL_IS_HELPER_,param) \ |
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) \ |
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/**/ |
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#define BOOST_TTI_DETAIL_TRAIT_ASSERT_NOT_NIL(trait,name,params) \ |
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BOOST_PP_ASSERT_MSG(0, "The parameter must be BOOST_PP_NIL") \ |
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/**/ |
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#define BOOST_TTI_DETAIL_TRAIT_CHECK_IS_NIL(trait,name,params) \ |
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BOOST_PP_IIF \ |
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( \ |
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BOOST_TTI_DETAIL_IS_NIL(params), \ |
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BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE, \ |
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BOOST_TTI_DETAIL_TRAIT_ASSERT_NOT_NIL \ |
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) \ |
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(trait,name,params) \ |
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/**/ |
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#define BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_THT(trait,name) \ |
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BOOST_MPL_HAS_XXX_TEMPLATE_NAMED_DEF(BOOST_PP_CAT(trait,_detail_mpl), name, false) \ |
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template<class BOOST_TTI_DETAIL_TP_T> \ |
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struct BOOST_PP_CAT(trait,_tht) : \ |
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BOOST_PP_CAT(trait,_detail_mpl)<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(trait,name,params) \ |
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BOOST_TTI_DETAIL_TRAIT_HAS_TEMPLATE_THT(trait,name) \ |
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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,_tht)<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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#endif // !BOOST_TTI_DETAIL_TEMPLATE_HPP
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