forked from boostorg/fusion
adapt template classes/structs
[SVN r59846]
This commit is contained in:
Christopher Schmidt
169
include/boost/fusion/adapted/struct/detail/adapt_base.hpp
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169
include/boost/fusion/adapted/struct/detail/adapt_base.hpp
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/*=============================================================================
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Copyright (c) 2009-2010 Christopher Schmidt
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_FUSION_ADAPTED_DETAIL_STRUCT_ADAPT_BASE_HPP
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#define BOOST_FUSION_ADAPTED_DETAIL_STRUCT_ADAPT_BASE_HPP
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#include <boost/config.hpp>
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#include <boost/fusion/support/tag_of_fwd.hpp>
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#include <boost/preprocessor/control/if.hpp>
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#include <boost/preprocessor/seq/size.hpp>
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#include <boost/preprocessor/seq/for_each.hpp>
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#include <boost/preprocessor/seq/for_each_i.hpp>
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#include <boost/preprocessor/seq/enum.hpp>
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#include <boost/preprocessor/seq/seq.hpp>
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#include <boost/preprocessor/tuple/eat.hpp>
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#include <boost/preprocessor/tuple/elem.hpp>
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#include <boost/mpl/tag.hpp>
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#include <boost/type_traits/add_reference.hpp>
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#include <boost/type_traits/add_const.hpp>
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#define BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME_TEMPLATE_PARAMS(SEQ) \
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BOOST_PP_SEQ_HEAD(SEQ)<BOOST_PP_SEQ_ENUM(BOOST_PP_SEQ_TAIL(SEQ))>
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#define BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(SEQ) \
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BOOST_PP_IF( \
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BOOST_PP_SEQ_HEAD(SEQ), \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME_TEMPLATE_PARAMS, \
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BOOST_PP_SEQ_HEAD)(BOOST_PP_SEQ_TAIL(SEQ))
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#define BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS_IMPL_C(R, _, ELEM) \
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(typename ELEM)
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#define BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS_IMPL(SEQ) \
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BOOST_PP_SEQ_ENUM( \
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BOOST_PP_SEQ_FOR_EACH( \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS_IMPL_C, \
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_, \
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BOOST_PP_SEQ_TAIL(SEQ)))
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#define BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS(SEQ) \
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BOOST_PP_IF( \
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BOOST_PP_SEQ_HEAD(SEQ), \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS_IMPL, \
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BOOST_PP_TUPLE_EAT(1))(SEQ)
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#ifdef BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS
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# define BOOST_FUSION_ADAPT_STRUCT_TAG_OF_SPECIALIZATION( \
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MODIFIER, TEMPLATE_PARAMS_SEQ,NAME_SEQ,TAG) \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS(TEMPLATE_PARAMS_SEQ) \
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> \
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struct tag_of< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ) MODIFIER \
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, void \
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> \
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{ \
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typedef TAG type; \
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};
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#else
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# define BOOST_FUSION_ADAPT_STRUCT_TAG_OF_SPECIALIZATION( \
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MODIFIER, TEMPLATE_PARAMS_SEQ,NAME_SEQ,TAG) \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS(TEMPLATE_PARAMS_SEQ) \
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> \
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struct tag_of<BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ) MODIFIER> \
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{ \
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typedef TAG type; \
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};
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#endif
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#define BOOST_FUSION_ADAPT_STRUCT_BASE_UNPACK_AND_CALL(R,DATA,I,ATTRIBUTE) \
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BOOST_PP_TUPLE_ELEM(3,0,DATA)( \
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BOOST_PP_TUPLE_ELEM(3,1,DATA), \
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BOOST_PP_TUPLE_ELEM(3,2,DATA), \
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I, \
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ATTRIBUTE)
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#define BOOST_FUSION_ADAPT_STRUCT_C_BASE( \
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TEMPLATE_PARAMS_SEQ,NAME_SEQ,I,PREFIX,ATTRIBUTE,ATTRIBUTE_TUPEL_SIZE) \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS(TEMPLATE_PARAMS_SEQ) \
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> \
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struct struct_member<BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ), I> \
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{ \
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typedef BOOST_PP_TUPLE_ELEM(ATTRIBUTE_TUPEL_SIZE, 0, ATTRIBUTE) type; \
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\
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template<typename Seq> \
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static typename add_reference<type>::type \
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call(Seq& seq) \
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{ \
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return seq.PREFIX \
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BOOST_PP_TUPLE_ELEM(ATTRIBUTE_TUPEL_SIZE, 1, ATTRIBUTE); \
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} \
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\
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template<typename Seq> \
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static typename add_reference<typename add_const<type>::type>::type \
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call(Seq const& seq) \
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{ \
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return seq.PREFIX \
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BOOST_PP_TUPLE_ELEM(ATTRIBUTE_TUPEL_SIZE, 1, ATTRIBUTE); \
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} \
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};
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#define BOOST_FUSION_ADAPT_STRUCT_BASE( \
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TEMPLATE_PARAMS_SEQ,NAME_SEQ,TAG,ATTRIBUTES_SEQ,ATTRIBUTES_CALLBACK) \
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\
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namespace boost \
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{ \
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namespace fusion \
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{ \
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namespace traits \
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{ \
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BOOST_FUSION_ADAPT_STRUCT_TAG_OF_SPECIALIZATION( \
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BOOST_PP_EMPTY(),TEMPLATE_PARAMS_SEQ,NAME_SEQ,TAG) \
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BOOST_FUSION_ADAPT_STRUCT_TAG_OF_SPECIALIZATION( \
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const,TEMPLATE_PARAMS_SEQ,NAME_SEQ,TAG) \
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} \
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\
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namespace extension \
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{ \
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BOOST_PP_SEQ_FOR_EACH_I_R( \
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1, \
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BOOST_FUSION_ADAPT_STRUCT_BASE_UNPACK_AND_CALL, \
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(ATTRIBUTES_CALLBACK,TEMPLATE_PARAMS_SEQ,NAME_SEQ), \
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ATTRIBUTES_SEQ) \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS( \
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TEMPLATE_PARAMS_SEQ) \
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> \
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struct struct_size<BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ)> \
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: mpl::int_<BOOST_PP_SEQ_SIZE(ATTRIBUTES_SEQ)> \
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{}; \
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} \
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} \
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\
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namespace mpl \
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{ \
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template<typename> \
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struct sequence_tag; \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS( \
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TEMPLATE_PARAMS_SEQ) \
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> \
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struct sequence_tag<BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ)> \
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{ \
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typedef fusion::fusion_sequence_tag type; \
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}; \
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\
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template< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_TEMPLATE_PARAMS( \
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TEMPLATE_PARAMS_SEQ) \
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> \
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struct sequence_tag< \
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BOOST_FUSION_ADAPT_STRUCT_UNPACK_NAME(NAME_SEQ) const \
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> \
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{ \
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typedef fusion::fusion_sequence_tag type; \
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}; \
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} \
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}
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#endif
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