12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- #ifndef BOOST_METAPARSE_V1_IMPL_ONE_OF_FWD_OP_HPP
- #define BOOST_METAPARSE_V1_IMPL_ONE_OF_FWD_OP_HPP
- // Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
- // 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/cpp98/impl/later_result.hpp>
- #include <boost/mpl/eval_if.hpp>
- namespace boost
- {
- namespace metaparse
- {
- namespace v1
- {
- namespace impl
- {
- template <class S, class Pos>
- struct one_of_fwd_op
- {
- typedef one_of_fwd_op type;
- template <class State, class P>
- struct apply :
- boost::mpl::eval_if<
- typename is_error<State>::type,
- boost::mpl::eval_if<
- typename is_error<typename P::template apply<S, Pos> >::type,
- later_result<State, typename P::template apply<S, Pos> >,
- typename P::template apply<S, Pos>
- >,
- State
- >
- {};
- };
- }
- }
- }
- }
- #endif
|