63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
#ifndef BOOST_METAPARSE_V1_CPP11_SEQUENCE_HPP
|
|
#define BOOST_METAPARSE_V1_CPP11_SEQUENCE_HPP
|
|
|
|
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2018.
|
|
// 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/cpp11/impl/push_front_result.hpp>
|
|
|
|
#include <boost/metaparse/v1/get_remaining.hpp>
|
|
#include <boost/metaparse/v1/get_position.hpp>
|
|
#include <boost/metaparse/v1/is_error.hpp>
|
|
#include <boost/metaparse/v1/return_.hpp>
|
|
#include <boost/metaparse/v1/transform.hpp>
|
|
|
|
#include <boost/mpl/eval_if.hpp>
|
|
#include <boost/mpl/vector.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace metaparse
|
|
{
|
|
namespace v1
|
|
{
|
|
template <class... Ps>
|
|
struct sequence;
|
|
|
|
template <>
|
|
struct sequence<> : return_<boost::mpl::vector<>> {};
|
|
|
|
template <class P, class... Ps>
|
|
struct sequence<P, Ps...>
|
|
{
|
|
private:
|
|
template <class Res>
|
|
struct apply_unchecked :
|
|
transform<
|
|
sequence<Ps...>,
|
|
impl::push_front_result<Res>
|
|
>::template apply<
|
|
typename get_remaining<Res>::type,
|
|
typename get_position<Res>::type
|
|
>
|
|
{};
|
|
public:
|
|
typedef sequence type;
|
|
|
|
template <class S, class Pos>
|
|
struct apply :
|
|
boost::mpl::eval_if<
|
|
typename is_error<typename P::template apply<S, Pos>>::type,
|
|
typename P::template apply<S, Pos>,
|
|
apply_unchecked<typename P::template apply<S, Pos>>
|
|
>
|
|
{};
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|