63e88f80
 Hu Chunming
提交三方库
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#ifndef BOOST_METAPARSE_V1_EMPTY_HPP
#define BOOST_METAPARSE_V1_EMPTY_HPP
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2010 - 2011.
// 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/error/end_of_input_expected.hpp>
#include <boost/metaparse/v1/reject.hpp>
#include <boost/metaparse/v1/accept.hpp>
#include <boost/metaparse/v1/define_error.hpp>
#include <boost/mpl/empty.hpp>
#include <boost/mpl/if.hpp>
namespace boost
{
namespace metaparse
{
namespace v1
{
template <class Result>
struct empty
{
typedef empty type;
template <class S, class Pos>
struct apply :
boost::mpl::if_<
boost::mpl::empty<S>,
accept<Result, S, Pos>,
reject<error::end_of_input_expected, Pos>
>
{};
};
}
}
}
#endif
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