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#ifndef BOOST_METAPARSE_V1_IMPL_UPDATE_C_HPP
#define BOOST_METAPARSE_V1_IMPL_UPDATE_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/split_at_c.hpp>
#include <boost/metaparse/v1/impl/concat.hpp>
#include <boost/preprocessor/arithmetic/dec.hpp>
#include <boost/preprocessor/arithmetic/inc.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/punctuation/comma_if.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/repeat.hpp>
#include <boost/preprocessor/repetition/repeat_from_to.hpp>
namespace boost
{
namespace metaparse
{
namespace v1
{
namespace impl
{
#ifndef BOOST_METAPARSE_VARIADIC_STRING
template <class S, int N, int C>
struct update_c;
#ifdef BOOST_METAPARSE_ARGN
# error BOOST_METAPARSE_ARGN already defined
#endif
#define BOOST_METAPARSE_ARGN(z, n, unused) , BOOST_PP_CAT(C, n)
#ifdef BOOST_METAPARSE_UPDATE
# error BOOST_METAPARSE_UPDATE already defined
#endif
#define BOOST_METAPARSE_UPDATE(z, n, unused) \
template < \
BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C), \
int Ch \
> \
struct update_c< \
string<BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, C)>,\
n, \
Ch \
> : \
string< \
BOOST_PP_ENUM_PARAMS(n, C) BOOST_PP_COMMA_IF(n) \
Ch \
BOOST_PP_REPEAT_FROM_TO( \
BOOST_PP_INC(n), \
BOOST_PP_DEC(BOOST_METAPARSE_LIMIT_STRING_SIZE), \
BOOST_METAPARSE_ARGN, \
~ \
) \
> \
{};
BOOST_PP_REPEAT(
BOOST_METAPARSE_LIMIT_STRING_SIZE,
BOOST_METAPARSE_UPDATE,
~
)
#undef BOOST_METAPARSE_UPDATE
#undef BOOST_METAPARSE_ARGN
#else
template <class S, int N, char C>
struct update_c :
concat<
typename split_at_c<N, S>::type::first,
typename
update_c<typename split_at_c<N, S>::type::second, 0, C>::type
>
{};
template <char... Cs, char C, char NewChar>
struct update_c<string<C, Cs...>, 0, NewChar> :
string<NewChar, Cs...>
{};
#endif
}
}
}
}
#endif
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