71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
|
#ifndef BOOST_METAPARSE_V1_CPP98_NTH_OF_C_HPP
|
||
|
|
#define BOOST_METAPARSE_V1_CPP98_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.hpp>
|
||
|
|
#include <boost/metaparse/limit_sequence_size.hpp>
|
||
|
|
|
||
|
|
#include <boost/preprocessor/repetition/repeat.hpp>
|
||
|
|
#include <boost/preprocessor/repetition/enum.hpp>
|
||
|
|
#include <boost/preprocessor/punctuation/comma_if.hpp>
|
||
|
|
#include <boost/preprocessor/repetition/enum_params.hpp>
|
||
|
|
#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
|
||
|
|
#include <boost/preprocessor/arithmetic/sub.hpp>
|
||
|
|
#include <boost/preprocessor/cat.hpp>
|
||
|
|
#include <boost/preprocessor/tuple/eat.hpp>
|
||
|
|
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace metaparse
|
||
|
|
{
|
||
|
|
namespace v1
|
||
|
|
{
|
||
|
|
template <
|
||
|
|
int N,
|
||
|
|
BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
|
||
|
|
BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
|
||
|
|
class P,
|
||
|
|
boost::mpl::na
|
||
|
|
)
|
||
|
|
>
|
||
|
|
struct nth_of_c;
|
||
|
|
|
||
|
|
#ifdef BOOST_METAPARSE_NTH_OF_N
|
||
|
|
# error BOOST_METAPARSE_NTH_OF_N already defined
|
||
|
|
#endif
|
||
|
|
#define BOOST_METAPARSE_NTH_OF_N(z, n, unused) \
|
||
|
|
template <int K BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, class P)> \
|
||
|
|
struct nth_of_c< \
|
||
|
|
K, \
|
||
|
|
BOOST_PP_ENUM_PARAMS(n, P) \
|
||
|
|
BOOST_PP_COMMA_IF(n) \
|
||
|
|
BOOST_PP_ENUM( \
|
||
|
|
BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE, n), \
|
||
|
|
boost::mpl::na BOOST_PP_TUPLE_EAT(3), \
|
||
|
|
~ \
|
||
|
|
) \
|
||
|
|
> : \
|
||
|
|
impl::BOOST_PP_CAT(nth_of_c, n)< \
|
||
|
|
K BOOST_PP_COMMA_IF(n) \
|
||
|
|
BOOST_PP_ENUM_PARAMS(n, P) \
|
||
|
|
> \
|
||
|
|
{};
|
||
|
|
|
||
|
|
BOOST_PP_REPEAT(
|
||
|
|
BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE,
|
||
|
|
BOOST_METAPARSE_NTH_OF_N,
|
||
|
|
~
|
||
|
|
)
|
||
|
|
|
||
|
|
#undef BOOST_METAPARSE_NTH_OF_N
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|