81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
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#ifndef BOOST_METAPARSE_V1_SEQUENCE_APPLY_HPP
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#define BOOST_METAPARSE_V1_SEQUENCE_APPLY_HPP
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
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// Distributed under the Boost Software License, Version 1.0.
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// (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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#include <boost/metaparse/v1/letter.hpp>
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#include <boost/metaparse/v1/sequence.hpp>
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#include <boost/metaparse/limit_sequence_size.hpp>
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#include <boost/mpl/at.hpp>
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/repetition/repeat_from_to.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/preprocessor/repetition/enum_params.hpp>
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#include <boost/preprocessor/tuple/eat.hpp>
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namespace boost
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{
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namespace metaparse
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{
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namespace v1
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{
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#ifdef BOOST_METAPARSE_SEQUENCE_APPLY_ARG
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# error BOOST_METAPARSE_SEQUENCE_APPLY_ARG already defined
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#endif
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#define BOOST_METAPARSE_SEQUENCE_APPLY_ARG(z, n, container) \
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typename boost::mpl::at_c<container, n>::type
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#ifdef BOOST_METAPARSE_SEQUENCE_APPLY
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# error BOOST_METAPARSE_SEQUENCE_APPLY already defined
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#endif
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#define BOOST_METAPARSE_SEQUENCE_APPLY(z, n, unused) \
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namespace impl \
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{ \
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template < \
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template <BOOST_PP_ENUM(n, class BOOST_PP_TUPLE_EAT(3), ~)> class T \
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> \
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struct BOOST_PP_CAT(sequence_apply_transform, n) \
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{ \
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typedef BOOST_PP_CAT(sequence_apply_transform, n) type; \
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\
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template <class V> \
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struct apply \
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{ \
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typedef T<BOOST_PP_ENUM(n, BOOST_METAPARSE_SEQUENCE_APPLY_ARG, V)> type; \
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}; \
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}; \
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} \
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\
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template < \
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template <BOOST_PP_ENUM(n, class BOOST_PP_TUPLE_EAT(3), ~)> class T, \
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BOOST_PP_ENUM_PARAMS(n, class P) \
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> \
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struct BOOST_PP_CAT(sequence_apply, n) : \
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transform< \
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sequence<BOOST_PP_ENUM_PARAMS(n, P)>, \
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BOOST_PP_CAT(impl::sequence_apply_transform, n)<T> \
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> \
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{};
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BOOST_PP_REPEAT_FROM_TO(
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1,
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BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
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BOOST_METAPARSE_SEQUENCE_APPLY,
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~
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)
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#undef BOOST_METAPARSE_SEQUENCE_APPLY
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#undef BOOST_METAPARSE_SEQUENCE_APPLY_ARG
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}
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}
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}
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#endif
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