116 lines
3.9 KiB
C++
116 lines
3.9 KiB
C++
// Copyright Daniel Wallin 2005. Use, modification and distribution is
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// subject to 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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#ifndef BOOST_PARAMETER_FLATTEN_051217_HPP
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# define BOOST_PARAMETER_FLATTEN_051217_HPP
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# include <boost/preprocessor/tuple/elem.hpp>
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# include <boost/preprocessor/tuple/rem.hpp>
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# include <boost/preprocessor/cat.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/identity.hpp>
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# include <boost/preprocessor/selection/max.hpp>
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# include <boost/preprocessor/arithmetic/sub.hpp>
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# include <boost/preprocessor/repetition/enum_trailing.hpp>
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# include <boost/parameter/aux_/preprocessor/for_each.hpp>
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# define BOOST_PARAMETER_FLATTEN_SPLIT_required required,
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# define BOOST_PARAMETER_FLATTEN_SPLIT_optional optional,
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# define BOOST_PARAMETER_FLATTEN_SPLIT_deduced deduced,
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# define BOOST_PARAMETER_FLATTEN_SPLIT(sub) \
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BOOST_PP_CAT(BOOST_PARAMETER_FLATTEN_SPLIT_, sub)
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# define BOOST_PARAMETER_FLATTEN_QUALIFIER(sub) \
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BOOST_PP_SPLIT(0, BOOST_PARAMETER_FLATTEN_SPLIT(sub))
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# define BOOST_PARAMETER_FLATTEN_ARGS(sub) \
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BOOST_PP_SPLIT(1, BOOST_PARAMETER_FLATTEN_SPLIT(sub))
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# define BOOST_PARAMETER_FLATTEN_ARITY_optional(arities) \
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BOOST_PP_TUPLE_ELEM(3,0,arities)
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# define BOOST_PARAMETER_FLATTEN_ARITY_required(arities) \
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BOOST_PP_TUPLE_ELEM(3,1,arities)
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# define BOOST_PARAMETER_FLATTEN_SPEC0_DUMMY_ELEM(z, n, data) ~
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# define BOOST_PARAMETER_FLATTEN_SPEC0(r, n, elem, data) \
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(( \
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BOOST_PP_TUPLE_ELEM(3,2,data) \
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, BOOST_PP_TUPLE_REM(BOOST_PP_TUPLE_ELEM(3,0,data)) elem \
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BOOST_PP_ENUM_TRAILING( \
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BOOST_PP_SUB( \
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BOOST_PP_TUPLE_ELEM(3,1,data) \
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, BOOST_PP_TUPLE_ELEM(3,0,data) \
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) \
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, BOOST_PARAMETER_FLATTEN_SPEC0_DUMMY_ELEM \
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, ~ \
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) \
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))
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# define BOOST_PARAMETER_FLATTEN_SPEC_AUX(r, arity, max_arity, spec, transform) \
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BOOST_PARAMETER_FOR_EACH_R( \
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r \
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, arity \
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, BOOST_PARAMETER_FLATTEN_ARGS(spec) \
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, (arity, max_arity, transform(BOOST_PARAMETER_FLATTEN_QUALIFIER(spec))) \
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, BOOST_PARAMETER_FLATTEN_SPEC0 \
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)
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# define BOOST_PARAMETER_FLATTEN_IDENTITY(x) x
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# define BOOST_PARAMETER_FLATTEN_SPEC_optional(r, arities, spec) \
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BOOST_PARAMETER_FLATTEN_SPEC_AUX( \
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r \
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, BOOST_PP_CAT( \
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BOOST_PARAMETER_FLATTEN_ARITY_, BOOST_PARAMETER_FLATTEN_QUALIFIER(spec) \
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)(arities) \
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, BOOST_PP_TUPLE_ELEM(3,2,arities) \
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, spec \
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, BOOST_PARAMETER_FLATTEN_IDENTITY \
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)
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# define BOOST_PARAMETER_FLATTEN_SPEC_required(r, arities, spec) \
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BOOST_PARAMETER_FLATTEN_SPEC_optional(r, arities, spec)
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# define BOOST_PARAMETER_FLATTEN_SPEC_AS_DEDUCED(x) BOOST_PP_CAT(deduced_,x)
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# define BOOST_PARAMETER_FLATTEN_SPEC_deduced_M(r, arities, n, spec) \
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BOOST_PARAMETER_FLATTEN_SPEC_AUX( \
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r \
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, BOOST_PP_CAT( \
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BOOST_PARAMETER_FLATTEN_ARITY_, BOOST_PARAMETER_FLATTEN_QUALIFIER(spec) \
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)(arities) \
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, BOOST_PP_TUPLE_ELEM(3,2,arities) \
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, spec \
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, BOOST_PARAMETER_FLATTEN_SPEC_AS_DEDUCED \
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)
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# define BOOST_PARAMETER_FLATTEN_SPEC_deduced(r, arities, spec) \
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BOOST_PP_SEQ_FOR_EACH_I_R( \
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r \
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, BOOST_PARAMETER_FLATTEN_SPEC_deduced_M \
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, arities \
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, BOOST_PARAMETER_FLATTEN_ARGS(spec) \
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)
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# define BOOST_PARAMETER_FLATTEN_SPEC(r, arities, spec) \
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BOOST_PP_CAT( \
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BOOST_PARAMETER_FLATTEN_SPEC_, BOOST_PARAMETER_FLATTEN_QUALIFIER(spec) \
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)(r, arities, spec)
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# define BOOST_PARAMETER_FLATTEN(optional_arity, required_arity, wanted_arity, specs) \
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BOOST_PP_SEQ_FOR_EACH( \
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BOOST_PARAMETER_FLATTEN_SPEC \
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, ( \
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optional_arity, required_arity \
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, wanted_arity \
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) \
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, specs \
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)
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#endif // BOOST_PARAMETER_FLATTEN_051217_HPP
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