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Diffstat (limited to 'boost/metaparse/v1/impl/skip_seq.hpp')
-rw-r--r-- | boost/metaparse/v1/impl/skip_seq.hpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/boost/metaparse/v1/impl/skip_seq.hpp b/boost/metaparse/v1/impl/skip_seq.hpp new file mode 100644 index 0000000000..4d7e5b138a --- /dev/null +++ b/boost/metaparse/v1/impl/skip_seq.hpp @@ -0,0 +1,74 @@ +#ifndef BOOST_METAPARSE_V1_IMPL_SKIP_SEQ_HPP +#define BOOST_METAPARSE_V1_IMPL_SKIP_SEQ_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/v1/is_error.hpp> +#include <boost/metaparse/v1/accept.hpp> +#include <boost/metaparse/v1/get_remaining.hpp> +#include <boost/metaparse/v1/get_position.hpp> +#include <boost/metaparse/v1/get_result.hpp> + +namespace boost +{ + namespace metaparse + { + namespace v1 + { + namespace impl + { + struct skip_seq + { + private: + template <class ParsingResult, class NewResultValue> + struct change_result : + accept< + NewResultValue, + typename get_remaining<ParsingResult>::type, + typename get_position<ParsingResult>::type + > + {}; + + template <class Result, class P> + struct apply_unchecked : + boost::mpl::eval_if< + typename is_error< + typename P::template apply< + typename get_remaining<Result>::type, + typename get_position<Result>::type + > + >::type, + typename P::template apply< + typename get_remaining<Result>::type, + typename get_position<Result>::type + >, + change_result< + typename P::template apply< + typename get_remaining<Result>::type, + typename get_position<Result>::type + >, + typename get_result<Result>::type + > + > + {}; + + public: + template <class Result, class P> + struct apply : + boost::mpl::eval_if< + is_error<Result>, + Result, + apply_unchecked<Result, P> + > + {}; + }; + } + } + } +} + +#endif + |