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1 | #ifndef BOOST_STATECHART_EXCEPTION_TRANSLATOR_HPP_INCLUDED |
2 | #define BOOST_STATECHART_EXCEPTION_TRANSLATOR_HPP_INCLUDED | |
3 | ////////////////////////////////////////////////////////////////////////////// | |
4 | // Copyright 2002-2006 Andreas Huber Doenni | |
5 | // Distributed under the Boost Software License, Version 1.0. (See accompany- | |
6 | // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ////////////////////////////////////////////////////////////////////////////// | |
8 | ||
9 | ||
10 | ||
11 | #include <boost/statechart/event.hpp> | |
12 | #include <boost/statechart/result.hpp> | |
13 | ||
14 | ||
15 | ||
16 | namespace boost | |
17 | { | |
18 | namespace statechart | |
19 | { | |
20 | ||
21 | ||
22 | ||
23 | ////////////////////////////////////////////////////////////////////////////// | |
24 | class exception_thrown : public event< exception_thrown > {}; | |
25 | ||
26 | ||
27 | ||
28 | ////////////////////////////////////////////////////////////////////////////// | |
29 | template< class ExceptionEvent = exception_thrown > | |
30 | class exception_translator | |
31 | { | |
32 | public: | |
33 | ////////////////////////////////////////////////////////////////////////// | |
34 | // The following declarations should be private. | |
35 | // They are only public because many compilers lack template friends. | |
36 | ////////////////////////////////////////////////////////////////////////// | |
37 | template< class Action, class ExceptionEventHandler > | |
38 | result operator()( Action action, ExceptionEventHandler eventHandler ) | |
39 | { | |
40 | try | |
41 | { | |
42 | return action(); | |
43 | } | |
44 | catch ( ... ) | |
45 | { | |
46 | return eventHandler( ExceptionEvent() ); | |
47 | } | |
48 | } | |
49 | }; | |
50 | ||
51 | ||
52 | ||
53 | } // namespace statechart | |
54 | } // namespace boost | |
55 | ||
56 | ||
57 | ||
58 | #endif |