100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
#ifndef BOOST_METAPARSE_V1_IMPL_SPLIT_AT_C_HPP
|
|
#define BOOST_METAPARSE_V1_IMPL_SPLIT_AT_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/config.hpp>
|
|
#include <boost/metaparse/v1/fwd/string.hpp>
|
|
#include <boost/metaparse/v1/impl/push_front_c.hpp>
|
|
|
|
#include <boost/preprocessor/arithmetic/add.hpp>
|
|
#include <boost/preprocessor/arithmetic/sub.hpp>
|
|
#include <boost/preprocessor/cat.hpp>
|
|
#include <boost/preprocessor/repetition/enum.hpp>
|
|
#include <boost/preprocessor/repetition/enum_params.hpp>
|
|
#include <boost/preprocessor/repetition/repeat.hpp>
|
|
|
|
#include <boost/mpl/pair.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace metaparse
|
|
{
|
|
namespace v1
|
|
{
|
|
namespace impl
|
|
{
|
|
template <int N, class S>
|
|
struct split_at_c;
|
|
|
|
#ifdef BOOST_METAPARSE_VARIADIC_STRING
|
|
template <int N, char C, char... Cs>
|
|
struct split_at_c<N, string<C, Cs...>> :
|
|
boost::mpl::pair<
|
|
typename push_front_c<
|
|
typename split_at_c<N - 1, string<Cs...>>::type::first,
|
|
C
|
|
>::type,
|
|
typename split_at_c<N - 1, string<Cs...>>::type::second
|
|
>
|
|
{};
|
|
|
|
template <char C, char... Cs>
|
|
struct split_at_c<0, string<C, Cs...>> :
|
|
boost::mpl::pair<string<>, string<C, Cs...>>
|
|
{};
|
|
|
|
template <class S>
|
|
struct split_at_c<0, S> : boost::mpl::pair<string<>, S> {};
|
|
#else
|
|
#ifdef BOOST_METAPARSE_ARG
|
|
# error BOOST_METAPARSE_ARG already defined
|
|
#endif
|
|
#define BOOST_METAPARSE_ARG(z, n, d) BOOST_PP_CAT(C, BOOST_PP_ADD(n, d))
|
|
|
|
#ifdef BOOST_METAPARSE_SPLIT_AT
|
|
# error BOOST_METAPARSE_SPLIT_AT already defined
|
|
#endif
|
|
#define BOOST_METAPARSE_SPLIT_AT(z, n, unused) \
|
|
template < \
|
|
BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C) \
|
|
> \
|
|
struct \
|
|
split_at_c< \
|
|
n, \
|
|
string<BOOST_PP_ENUM_PARAMS( \
|
|
BOOST_METAPARSE_LIMIT_STRING_SIZE, C) \
|
|
> \
|
|
> : \
|
|
boost::mpl::pair< \
|
|
string<BOOST_PP_ENUM_PARAMS(n, C)>, \
|
|
string< \
|
|
BOOST_PP_ENUM( \
|
|
BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_STRING_SIZE, n), \
|
|
BOOST_METAPARSE_ARG, \
|
|
n \
|
|
) \
|
|
> \
|
|
> \
|
|
{};
|
|
|
|
BOOST_PP_REPEAT(
|
|
BOOST_METAPARSE_LIMIT_STRING_SIZE,
|
|
BOOST_METAPARSE_SPLIT_AT,
|
|
~
|
|
)
|
|
|
|
#undef BOOST_METAPARSE_SPLIT_AT
|
|
#undef BOOST_METAPARSE_ARG
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|