75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
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#ifndef BOOST_METAPARSE_V1_CPP98_IMPL_SKIP_SEQ_HPP
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#define BOOST_METAPARSE_V1_CPP98_IMPL_SKIP_SEQ_HPP
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2013.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/metaparse/v1/is_error.hpp>
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#include <boost/metaparse/v1/accept.hpp>
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#include <boost/metaparse/v1/get_remaining.hpp>
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#include <boost/metaparse/v1/get_position.hpp>
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#include <boost/metaparse/v1/get_result.hpp>
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namespace boost
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{
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namespace metaparse
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{
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namespace v1
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{
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namespace impl
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{
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struct skip_seq
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{
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private:
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template <class ParsingResult, class NewResultValue>
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struct change_result :
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accept<
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NewResultValue,
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typename get_remaining<ParsingResult>::type,
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typename get_position<ParsingResult>::type
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>
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{};
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template <class Result, class P>
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struct apply_unchecked :
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boost::mpl::eval_if<
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typename is_error<
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typename P::template apply<
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typename get_remaining<Result>::type,
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typename get_position<Result>::type
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>
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>::type,
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typename P::template apply<
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typename get_remaining<Result>::type,
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typename get_position<Result>::type
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>,
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change_result<
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typename P::template apply<
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typename get_remaining<Result>::type,
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typename get_position<Result>::type
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>,
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typename get_result<Result>::type
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>
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>
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{};
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public:
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template <class Result, class P>
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struct apply :
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boost::mpl::eval_if<
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is_error<Result>,
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Result,
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apply_unchecked<Result, P>
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>
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{};
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};
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}
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}
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}
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}
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#endif
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