sl@0: //  (C) Copyright David Abrahams 2000.
sl@0: // Distributed under the Boost Software License, Version 1.0. (See
sl@0: // accompanying file LICENSE_1_0.txt or copy at
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: //
sl@0: //  The author gratefully acknowleges the support of Dragon Systems, Inc., in
sl@0: //  producing this work.
sl@0: 
sl@0: #ifndef ERRORS_DWA052500_H_
sl@0: # define ERRORS_DWA052500_H_
sl@0: 
sl@0: # include <boost/python/detail/prefix.hpp>
sl@0: # include <boost/function/function0.hpp>
sl@0: 
sl@0: namespace boost { namespace python {
sl@0: 
sl@0: struct BOOST_PYTHON_DECL_EXCEPTION error_already_set
sl@0: {
sl@0:   virtual ~error_already_set();
sl@0: };
sl@0: 
sl@0: // Handles exceptions caught just before returning to Python code.
sl@0: // Returns true iff an exception was caught.
sl@0: BOOST_PYTHON_DECL bool handle_exception_impl(function0<void>);
sl@0: 
sl@0: template <class T>
sl@0: bool handle_exception(T f)
sl@0: {
sl@0:     return handle_exception_impl(function0<void>(boost::ref(f)));
sl@0: }
sl@0: 
sl@0: namespace detail { inline void rethrow() { throw; } }
sl@0: 
sl@0: inline void handle_exception()
sl@0: {
sl@0:     handle_exception(detail::rethrow);
sl@0: }
sl@0: 
sl@0: BOOST_PYTHON_DECL void throw_error_already_set();
sl@0: 
sl@0: template <class T>
sl@0: inline T* expect_non_null(T* x)
sl@0: {
sl@0:     if (x == 0)
sl@0:         throw_error_already_set();
sl@0:     return x;
sl@0: }
sl@0: 
sl@0: // Return source if it is an instance of pytype; throw an appropriate
sl@0: // exception otherwise.
sl@0: BOOST_PYTHON_DECL PyObject* pytype_check(PyTypeObject* pytype, PyObject* source);
sl@0: 
sl@0: }} // namespace boost::python
sl@0: 
sl@0: #endif // ERRORS_DWA052500_H_