47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#ifndef BOOST_METAPARSE_V1_IMPL_ITERATE_IMPL_HPP
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#define BOOST_METAPARSE_V1_IMPL_ITERATE_IMPL_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/impl/iterate_impl_unchecked.hpp>
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#include <boost/metaparse/v1/return_.hpp>
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#include <boost/metaparse/v1/is_error.hpp>
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#include <boost/mpl/eval_if.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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template <int N, class P, class Accum>
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struct iterate_impl
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{
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typedef iterate_impl type;
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template <class S, class Pos>
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struct apply :
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boost::mpl::eval_if<
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typename is_error<typename P::template apply<S, Pos> >::type,
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typename P::template apply<S, Pos>,
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iterate_impl_unchecked<N, P, Accum, S, Pos>
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>
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{};
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};
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template <class P, class Accum>
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struct iterate_impl<0, P, Accum> : return_<Accum> {};
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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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