67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
#ifndef BOOST_METAPARSE_V1_LAST_OF_HPP
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#define BOOST_METAPARSE_V1_LAST_OF_HPP
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2009 - 2010.
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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/nth_of.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/repetition/enum_params.hpp>
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#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/preprocessor/repetition/repeat.hpp>
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#include <boost/preprocessor/arithmetic/sub.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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template <
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BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
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BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
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class P,
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boost::mpl::na
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)
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>
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struct last_of;
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#ifdef BOOST_METAPARSE_LAST_OF_N
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# error BOOST_METAPARSE_LAST_OF_N already defined
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#endif
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#define BOOST_METAPARSE_LAST_OF_N(z, n, unused) \
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template <BOOST_PP_ENUM_PARAMS(n, class P)> \
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struct last_of< \
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BOOST_PP_ENUM_PARAMS(n, P) \
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BOOST_PP_COMMA_IF(n) \
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BOOST_PP_ENUM( \
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BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE, n), \
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boost::mpl::na BOOST_PP_TUPLE_EAT(3), \
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~ \
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) \
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> : \
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impl::BOOST_PP_CAT(nth_of_c, n)< \
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n - 1 BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, P) \
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> \
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{};
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BOOST_PP_REPEAT(
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BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
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BOOST_METAPARSE_LAST_OF_N,
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~
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)
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#undef BOOST_METAPARSE_LAST_OF_N
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}
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}
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}
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#endif
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