forked from boostorg/fusion
adapt template classes/structs
[SVN r59846]
This commit is contained in:
Christopher Schmidt
@ -1,132 +1,55 @@
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/*=============================================================================
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Copyright (c) 2001-2009 Joel de Guzman
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Copyright (c) 2009-2010 Hartmut Kaiser
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Copyright (c) 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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#if !defined(BOOST_FUSION_ADAPT_CLASS_OCTOBER_4_2009_840PM)
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#define BOOST_FUSION_ADAPT_CLASS_OCTOBER_4_2009_840PM
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#include <boost/fusion/support/tag_of_fwd.hpp>
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#include <boost/fusion/adapted/class/extension.hpp>
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#include <boost/fusion/adapted/class/class_iterator.hpp>
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#ifndef BOOST_FUSION_ADAPTED_CLASS_ADAPT_CLASS_HPP
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#define BOOST_FUSION_ADAPTED_CLASS_ADAPT_CLASS_HPP
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/empty.hpp>
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#include <boost/fusion/adapted/class/detail/extension.hpp>
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#include <boost/fusion/adapted/class/detail/adapt_base.hpp>
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#include <boost/fusion/adapted/class/detail/at_impl.hpp>
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#include <boost/fusion/adapted/class/detail/is_view_impl.hpp>
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#include <boost/fusion/adapted/class/detail/is_sequence_impl.hpp>
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#include <boost/fusion/adapted/class/detail/value_at_impl.hpp>
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#include <boost/fusion/adapted/class/detail/category_of_impl.hpp>
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#include <boost/fusion/adapted/class/detail/size_impl.hpp>
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#include <boost/fusion/adapted/class/detail/begin_impl.hpp>
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#include <boost/fusion/adapted/class/detail/end_impl.hpp>
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#include <boost/fusion/adapted/class/detail/size_impl.hpp>
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#include <boost/fusion/adapted/class/detail/at_impl.hpp>
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#include <boost/fusion/adapted/class/detail/value_at_impl.hpp>
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#include <boost/fusion/adapted/class/detail/value_of_impl.hpp>
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#include <boost/fusion/adapted/class/detail/deref_impl.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/seq/for_each_i.hpp>
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#include <boost/preprocessor/tuple/elem.hpp>
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#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
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#include <boost/preprocessor/repetition/enum_params.hpp>
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#include <boost/preprocessor/cat.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/config/no_tr1/utility.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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#include <boost/type_traits/remove_reference.hpp>
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#include <boost/type_traits/remove_const.hpp>
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#define BOOST_FUSION_ADAPT_CLASS_FILLER_0(A, B, C, D)\
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((A, B, C, D)) BOOST_FUSION_ADAPT_CLASS_FILLER_1
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#define BOOST_FUSION_ADAPT_CLASS_FILLER_1(A, B, C, D)\
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((A, B, C, D)) BOOST_FUSION_ADAPT_CLASS_FILLER_0
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#define BOOST_FUSION_ADAPT_CLASS_FILLER_0_END
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#define BOOST_FUSION_ADAPT_CLASS_FILLER_1_END
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#define BOOST_FUSION_ADAPT_CLASS(name, bseq) \
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BOOST_FUSION_ADAPT_CLASS_I( \
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name, BOOST_PP_CAT(BOOST_FUSION_ADAPT_CLASS_X bseq, 0)) \
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/***/
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#define BOOST_FUSION_ADAPT_CLASS_C(TEMPLATE_PARAMS_SEQ, NAME_SEQ, I, ATTRIBUTE) \
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BOOST_FUSION_ADAPT_CLASS_C_BASE( \
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TEMPLATE_PARAMS_SEQ, NAME_SEQ, I, ATTRIBUTE, 4)
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#define BOOST_FUSION_ADAPT_CLASS_X(w, x, y, z) ((w, x, y, z)) BOOST_FUSION_ADAPT_CLASS_Y
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#define BOOST_FUSION_ADAPT_CLASS_Y(w, x, y, z) ((w, x, y, z)) BOOST_FUSION_ADAPT_CLASS_X
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#define BOOST_FUSION_ADAPT_CLASS_X0
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#define BOOST_FUSION_ADAPT_CLASS_Y0
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#define BOOST_FUSION_ADAPT_TPL_CLASS(TEMPLATE_PARAMS_SEQ, NAME_SEQ , ATTRIBUTES)\
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BOOST_FUSION_ADAPT_STRUCT_BASE( \
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(1)TEMPLATE_PARAMS_SEQ, \
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(1)NAME_SEQ, \
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class_tag, \
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BOOST_PP_CAT(BOOST_FUSION_ADAPT_CLASS_FILLER_0 ATTRIBUTES,_END), \
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BOOST_FUSION_ADAPT_CLASS_C)
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// BOOST_FUSION_ADAPT_CLASS_I generates the overarching structure and uses
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// SEQ_FOR_EACH_I to generate the "linear" substructures.
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// Thanks to Paul Mensonides for the PP macro help
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#define BOOST_FUSION_ADAPT_CLASS_I(name, seq) \
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namespace boost { namespace fusion { namespace traits \
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{ \
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template <> \
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struct tag_of<name> \
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{ \
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typedef class_tag type; \
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}; \
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}}} \
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\
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namespace boost { 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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struct sequence_tag<name> \
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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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struct sequence_tag<name const> \
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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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namespace boost { namespace fusion { namespace extension \
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{ \
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template <> \
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struct class_size<name> : mpl::int_<BOOST_PP_SEQ_SIZE(seq)> {}; \
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template <typename T, int N> struct class_member_proxy; \
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BOOST_PP_SEQ_FOR_EACH_I(BOOST_FUSION_ADAPT_CLASS_C, name, seq) \
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}}} \
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/***/
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#define BOOST_FUSION_ADAPT_CLASS_C(r, fullname, i, xy) \
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template <> \
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struct class_member_proxy<fullname, i> \
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{ \
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typedef BOOST_PP_TUPLE_ELEM(4, 0, xy) lvalue; \
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typedef BOOST_PP_TUPLE_ELEM(4, 1, xy) rvalue; \
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typedef remove_const<remove_reference<lvalue>::type>::type type; \
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typedef add_reference<add_const<type>::type>::type cref_type; \
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\
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class_member_proxy(fullname& obj) : obj(obj) {} \
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fullname& obj; \
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\
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class_member_proxy& operator=(cref_type val) \
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{ \
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BOOST_PP_TUPLE_ELEM(4, 3, xy); \
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return *this; \
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} \
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\
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operator lvalue() \
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{ \
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return BOOST_PP_TUPLE_ELEM(4, 2, xy); \
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} \
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}; \
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\
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template <> \
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struct class_member<fullname, i> \
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{ \
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typedef class_member_proxy<fullname, i> proxy; \
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typedef proxy::type type; \
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typedef proxy::rvalue get_type; \
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\
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static get_type call(fullname const& obj) \
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{ \
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return BOOST_PP_TUPLE_ELEM(4, 2, xy); \
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} \
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\
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static proxy call(fullname& obj) \
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{ \
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return proxy(obj); \
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} \
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}; \
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/***/
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#define BOOST_FUSION_ADAPT_CLASS(NAME, ATTRIBUTES) \
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BOOST_FUSION_ADAPT_STRUCT_BASE( \
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(0), \
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(0)(NAME), \
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class_tag, \
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BOOST_PP_CAT(BOOST_FUSION_ADAPT_CLASS_FILLER_0 ATTRIBUTES,_END), \
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BOOST_FUSION_ADAPT_CLASS_C)
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#endif
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