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#ifndef BOOST_METAPARSE_V1_IMPL_REMOVE_TRAILING_NO_CHARS_HPP
#define BOOST_METAPARSE_V1_IMPL_REMOVE_TRAILING_NO_CHARS_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/string.hpp>
#include <boost/metaparse/v1/impl/push_front_c.hpp>
namespace boost
{
namespace metaparse
{
namespace v1
{
namespace impl
{
template <class S>
struct remove_trailing_no_chars : S {};
#ifdef BOOST_METAPARSE_VARIADIC_STRING
// this code assumes that BOOST_NO_CHARs are at the end of the string
template <char... Cs>
struct remove_trailing_no_chars<string<BOOST_NO_CHAR, Cs...>> :
string<>
{};
template <char C, char... Cs>
struct remove_trailing_no_chars<string<C, Cs...>> :
push_front_c<typename remove_trailing_no_chars<string<Cs...>>::type,C>
{};
#ifdef _MSC_VER
/*
* These specialisations are needed to avoid an internal compiler error
* in Visual C++ 12
*/
template <char C>
struct remove_trailing_no_chars<string<C>> : string<C> {};
template <>
struct remove_trailing_no_chars<string<BOOST_NO_CHAR>> : string<> {};
template <>
struct remove_trailing_no_chars<string<>> : string<> {};
#endif
#endif
}
}
}
}
#endif
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