#ifndef BOOST_METAPARSE_V1_UTIL_UNLESS_ERROR_HPP #define BOOST_METAPARSE_V1_UTIL_UNLESS_ERROR_HPP // Copyright Abel Sinkovics (abel@sinkovics.hu) 2011. // 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/mpl/equal_to.hpp> #include <boost/mpl/eval_if.hpp> namespace boost { namespace metaparse { namespace v1 { template <class T, class NotErrorCase> struct unless_error : boost::mpl::eval_if<typename is_error<T>::type, T, NotErrorCase> {}; } } } #endif