1 // Copyright David Abrahams 2002.
2 // Distributed under the Boost Software License, Version 1.0. (See
3 // accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
5 #ifndef TRANSLATE_EXCEPTION_TDS20091020_HPP
6 # define TRANSLATE_EXCEPTION_TDS20091020_HPP
7 
8 # include <boost/python/detail/exception_handler.hpp>
9 # include <boost/python/detail/type_traits.hpp>
10 
11 # include <boost/call_traits.hpp>
12 
13 # include <boost/function/function0.hpp>
14 
15 namespace boost { namespace python { namespace detail {
16 
17 // A ternary function object used to translate C++ exceptions of type
18 // ExceptionType into Python exceptions by invoking an object of type
19 // Translate. Typically the translate function will be curried with
20 // boost::bind().
21 template <class ExceptionType, class Translate>
22 struct translate_exception
23 {
24 // workaround for broken gcc that ships with SuSE 9.0 and SuSE 9.1
25 # if defined(__linux__) && defined(__GNUC__) \
26     && BOOST_WORKAROUND(__GNUC__, == 3) \
27     && BOOST_WORKAROUND(__GNUC_MINOR__, == 3) \
28     && (BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 1) \
29         || BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 3))
30     typedef typename remove_reference<
31         typename add_const<ExceptionType>::type
32     >::type exception_non_ref;
33 # else
34     typedef typename add_lvalue_reference<
35         typename add_const<ExceptionType>::type
36     >::type exception_cref;
37 # endif
38 
operator ()boost::python::detail::translate_exception39     inline bool operator()(
40         exception_handler const& handler
41       , function0<void> const& f
42       , typename call_traits<Translate>::param_type translate) const
43     {
44         try
45         {
46             return handler(f);
47         }
48 // workaround for broken gcc that ships with SuSE 9.0 and SuSE 9.1
49 # if defined(__linux__) && defined(__GNUC__) \
50     && BOOST_WORKAROUND(__GNUC__, == 3) \
51     && BOOST_WORKAROUND(__GNUC_MINOR__, == 3) \
52     && (BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 1) \
53         || BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 3))
54         catch(exception_non_ref& e)
55 # else
56         catch(exception_cref e)
57 # endif
58         {
59             translate(e);
60             return true;
61         }
62     }
63 };
64 
65 }}} // namespace boost::python::detail
66 
67 #endif // TRANSLATE_EXCEPTION_DWA2002810_HPP
68