Added boost header

test/external/boost/msm/front/common_states.hpp

@@ -0,0 +1,37 @@
+// 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_FRONT_COMMON_STATES_H
+#define BOOST_MSM_FRONT_COMMON_STATES_H
+
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/vector.hpp>
+#include <boost/fusion/container/map.hpp>
+#include <boost/fusion/include/at_c.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/msm/front/detail/common_states.hpp>
+
+namespace boost { namespace msm { namespace front
+{
+// default base: non-polymorphic, not visitable
+struct default_base_state 
+{
+    ~default_base_state(){}
+};
+// default polymorphic base state. Derive all states from it to get polymorphic behavior
+struct polymorphic_state
+{
+    virtual ~polymorphic_state() {}
+};
+
+}}}
+
+#endif //BOOST_MSM_FRONT_COMMON_STATES_H
+