mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-22 12:51:42 +03:00
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
|
#ifndef BOOST_METAPARSE_V1_KEYWORD_HPP
|
||
|
|
#define BOOST_METAPARSE_V1_KEYWORD_HPP
|
||
|
|
|
||
|
|
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2009 - 2010.
|
||
|
|
// 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/impl/void_.hpp>
|
||
|
|
#include <boost/metaparse/v1/lit.hpp>
|
||
|
|
#include <boost/metaparse/v1/return_.hpp>
|
||
|
|
#include <boost/metaparse/v1/is_error.hpp>
|
||
|
|
#include <boost/metaparse/v1/get_remaining.hpp>
|
||
|
|
#include <boost/metaparse/v1/get_position.hpp>
|
||
|
|
|
||
|
|
#include <boost/mpl/if.hpp>
|
||
|
|
#include <boost/mpl/eval_if.hpp>
|
||
|
|
#include <boost/mpl/empty.hpp>
|
||
|
|
#include <boost/mpl/pop_front.hpp>
|
||
|
|
#include <boost/mpl/front.hpp>
|
||
|
|
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace metaparse
|
||
|
|
{
|
||
|
|
namespace v1
|
||
|
|
{
|
||
|
|
// Does not consume/check anything after the keyword
|
||
|
|
template <class Kw, class ResultType = impl::void_>
|
||
|
|
struct keyword
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
struct nonempty
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
typedef lit<typename boost::mpl::front<Kw>::type> next_char_parser;
|
||
|
|
|
||
|
|
typedef
|
||
|
|
keyword<typename boost::mpl::pop_front<Kw>::type, ResultType>
|
||
|
|
rest_parser;
|
||
|
|
|
||
|
|
template <class S, class Pos>
|
||
|
|
struct apply_unchecked :
|
||
|
|
rest_parser::template apply<
|
||
|
|
typename get_remaining<
|
||
|
|
typename next_char_parser::template apply<S, Pos>
|
||
|
|
>::type,
|
||
|
|
typename get_position<
|
||
|
|
typename next_char_parser::template apply<S, Pos>
|
||
|
|
>::type
|
||
|
|
>
|
||
|
|
{};
|
||
|
|
public:
|
||
|
|
template <class S, class Pos>
|
||
|
|
struct apply :
|
||
|
|
boost::mpl::eval_if<
|
||
|
|
typename is_error<
|
||
|
|
typename next_char_parser::template apply<S, Pos>
|
||
|
|
>::type,
|
||
|
|
typename next_char_parser::template apply<S, Pos>,
|
||
|
|
apply_unchecked<S, Pos>
|
||
|
|
>
|
||
|
|
{};
|
||
|
|
};
|
||
|
|
public:
|
||
|
|
typedef keyword type;
|
||
|
|
|
||
|
|
template <class S, class Pos>
|
||
|
|
struct apply :
|
||
|
|
boost::mpl::if_<
|
||
|
|
boost::mpl::empty<Kw>,
|
||
|
|
return_<ResultType>,
|
||
|
|
nonempty
|
||
|
|
>::type::template apply<S, Pos>
|
||
|
|
{};
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|