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- #ifndef BOOST_METAPARSE_V1_CPP98_IMPL_NTH_OF_C_HPP
- #define BOOST_METAPARSE_V1_CPP98_IMPL_NTH_OF_C_HPP
- // Copyright Abel Sinkovics (abel@sinkovics.hu) 2013.
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/metaparse/v1/cpp98/impl/nth_of_c_impl.hpp>
- #include <boost/metaparse/v1/error/index_out_of_range.hpp>
- #include <boost/metaparse/v1/fail.hpp>
- #include <boost/metaparse/limit_sequence_size.hpp>
- #include <boost/mpl/list.hpp>
- #include <boost/preprocessor/repetition/repeat.hpp>
- #include <boost/preprocessor/punctuation/comma_if.hpp>
- #include <boost/preprocessor/repetition/enum_params.hpp>
- #include <boost/preprocessor/cat.hpp>
- namespace boost
- {
- namespace metaparse
- {
- namespace v1
- {
- namespace impl
- {
- #ifdef BOOST_METAPARSE_NTH_OF_CASE
- # error BOOST_METAPARSE_NTH_OF_CASE already defined
- #endif
- #define BOOST_METAPARSE_NTH_OF_CASE(z, n, unused) \
- template < \
- int K BOOST_PP_COMMA_IF(n) \
- BOOST_PP_ENUM_PARAMS(n, class P) \
- > \
- struct BOOST_PP_CAT(nth_of_c, n) : \
- boost::mpl::if_< \
- boost::mpl::bool_<(0 <= K && K < n)>, \
- nth_of_c_impl< \
- K, \
- boost::mpl::list<BOOST_PP_ENUM_PARAMS(n, P)> \
- >, \
- fail<error::index_out_of_range<0, n - 1, K> > \
- >::type \
- {};
-
- BOOST_PP_REPEAT(
- BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
- BOOST_METAPARSE_NTH_OF_CASE,
- ~
- )
-
- #undef BOOST_METAPARSE_NTH_OF_CASE
- }
- }
- }
- }
- #endif
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