#ifndef BOOST_METAPARSE_V1_CPP98_IMPL_NTH_OF_C_HPP
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#define BOOST_METAPARSE_V1_CPP98_IMPL_NTH_OF_C_HPP
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2013.
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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/cpp98/impl/nth_of_c_impl.hpp>
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#include <boost/metaparse/v1/error/index_out_of_range.hpp>
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#include <boost/metaparse/v1/fail.hpp>
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#include <boost/metaparse/limit_sequence_size.hpp>
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#include <boost/mpl/list.hpp>
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#include <boost/preprocessor/repetition/repeat.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/cat.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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namespace impl
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{
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#ifdef BOOST_METAPARSE_NTH_OF_CASE
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# error BOOST_METAPARSE_NTH_OF_CASE already defined
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#endif
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#define BOOST_METAPARSE_NTH_OF_CASE(z, n, unused) \
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template < \
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int K BOOST_PP_COMMA_IF(n) \
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BOOST_PP_ENUM_PARAMS(n, class P) \
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> \
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struct BOOST_PP_CAT(nth_of_c, n) : \
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boost::mpl::if_< \
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boost::mpl::bool_<(0 <= K && K < n)>, \
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nth_of_c_impl< \
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K, \
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boost::mpl::list<BOOST_PP_ENUM_PARAMS(n, P)> \
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>, \
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fail<error::index_out_of_range<0, n - 1, K> > \
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>::type \
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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_NTH_OF_CASE,
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~
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)
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#undef BOOST_METAPARSE_NTH_OF_CASE
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}
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}
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}
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}
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#endif
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