diff options
Diffstat (limited to 'boost/msm/event_traits.hpp')
-rw-r--r-- | boost/msm/event_traits.hpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/boost/msm/event_traits.hpp b/boost/msm/event_traits.hpp new file mode 100644 index 0000000000..4b2350594f --- /dev/null +++ b/boost/msm/event_traits.hpp @@ -0,0 +1,36 @@ +// Copyright 2008 Christophe Henry +// henry UNDERSCORE christophe AT hotmail DOT com +// This is an extended version of the state machine available in the boost::mpl library +// Distributed under the same license as the original. +// Copyright for the original version: +// Copyright 2005 David Abrahams and Aleksey Gurtovoy. 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) + +#ifndef BOOST_MSM_EVENT_TRAITS_H +#define BOOST_MSM_EVENT_TRAITS_H + +#include <boost/any.hpp> +#include <boost/mpl/bool.hpp> + +namespace boost { namespace msm +{ + +template< typename Event > +struct is_kleene_event +{ + // default: no event is a kleene event (kleene: matches any event in a transitions) + typedef ::boost::mpl::false_ type; +}; + +// add this way in this namespace specializations for events which you want to use as kleene +// requirement: a copy-constructor matching the events which will be converted to this kleene +template<> +struct is_kleene_event< boost::any > +{ + typedef ::boost::mpl::true_ type; +}; + +} } // boost::msm +#endif //BOOST_MSM_EVENT_TRAITS_H |