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1 | // (C) Copyright David Abrahams 2000. |
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 | // | |
6 | // The author gratefully acknowleges the support of Dragon Systems, Inc., in | |
7 | // producing this work. | |
8 | ||
9 | #ifndef ERRORS_DWA052500_H_ | |
10 | # define ERRORS_DWA052500_H_ | |
11 | ||
12 | # include <boost/python/detail/prefix.hpp> | |
13 | # include <boost/function/function0.hpp> | |
14 | ||
15 | namespace boost { namespace python { | |
16 | ||
17 | struct BOOST_PYTHON_DECL_EXCEPTION error_already_set | |
18 | { | |
19 | virtual ~error_already_set(); | |
20 | }; | |
21 | ||
22 | // Handles exceptions caught just before returning to Python code. | |
23 | // Returns true iff an exception was caught. | |
24 | BOOST_PYTHON_DECL bool handle_exception_impl(function0<void>); | |
25 | ||
26 | template <class T> | |
27 | bool handle_exception(T f) | |
28 | { | |
29 | return handle_exception_impl(function0<void>(boost::ref(f))); | |
30 | } | |
31 | ||
32 | namespace detail { inline void rethrow() { throw; } } | |
33 | ||
34 | inline void handle_exception() | |
35 | { | |
36 | handle_exception(detail::rethrow); | |
37 | } | |
38 | ||
39 | BOOST_PYTHON_DECL void throw_error_already_set(); | |
40 | ||
41 | template <class T> | |
42 | inline T* expect_non_null(T* x) | |
43 | { | |
44 | if (x == 0) | |
45 | throw_error_already_set(); | |
46 | return x; | |
47 | } | |
48 | ||
49 | // Return source if it is an instance of pytype; throw an appropriate | |
50 | // exception otherwise. | |
51 | BOOST_PYTHON_DECL PyObject* pytype_check(PyTypeObject* pytype, PyObject* source); | |
52 | ||
53 | }} // namespace boost::python | |
54 | ||
55 | #endif // ERRORS_DWA052500_H_ |