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 
10 # include <boost/call_traits.hpp>
11 # include <boost/type_traits/add_const.hpp>
12 # include <boost/type_traits/add_reference.hpp>
13 # include <boost/type_traits/remove_reference.hpp>
14 
15 # include <boost/function/function0.hpp>
16 
17 namespace boost { namespace python { namespace detail {
18 
19 // A ternary function object used to translate C++ exceptions of type
20 // ExceptionType into Python exceptions by invoking an object of type
21 // Translate. Typically the translate function will be curried with
22 // boost::bind().
23 template <class ExceptionType, class Translate>
24 struct translate_exception
25 {
26 // workaround for broken gcc that ships with SuSE 9.0 and SuSE 9.1
27 # if defined(__linux__) && defined(__GNUC__) \
28     && BOOST_WORKAROUND(__GNUC__, == 3) \
29     && BOOST_WORKAROUND(__GNUC_MINOR__, == 3) \
30     && (BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 1) \
31         || BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 3))
32     typedef typename remove_reference<
33         typename add_const<ExceptionType>::type
34     >::type exception_non_ref;
35 # else
36     typedef typename add_reference<
37         typename add_const<ExceptionType>::type
38     >::type exception_cref;
39 # endif
40 
operator ()boost::python::detail::translate_exception41     inline bool operator()(
42         exception_handler const& handler
43       , function0<void> const& f
44       , typename call_traits<Translate>::param_type translate) const
45     {
46         try
47         {
48             return handler(f);
49         }
50 // workaround for broken gcc that ships with SuSE 9.0 and SuSE 9.1
51 # if defined(__linux__) && defined(__GNUC__) \
52     && BOOST_WORKAROUND(__GNUC__, == 3) \
53     && BOOST_WORKAROUND(__GNUC_MINOR__, == 3) \
54     && (BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 1) \
55         || BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, == 3))
56         catch(exception_non_ref& e)
57 # else
58         catch(exception_cref e)
59 # endif
60         {
61             translate(e);
62             return true;
63         }
64     }
65 };
66 
67 }}} // namespace boost::python::detail
68 
69 #endif // TRANSLATE_EXCEPTION_DWA2002810_HPP
70