Chris@16: //  (C) Copyright David Abrahams 2000.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: //  The author gratefully acknowleges the support of Dragon Systems, Inc., in
Chris@16: //  producing this work.
Chris@16: 
Chris@16: #ifndef ERRORS_DWA052500_H_
Chris@16: # define ERRORS_DWA052500_H_
Chris@16: 
Chris@16: # include <boost/python/detail/prefix.hpp>
Chris@16: # include <boost/function/function0.hpp>
Chris@16: 
Chris@16: namespace boost { namespace python {
Chris@16: 
Chris@16: struct BOOST_PYTHON_DECL_EXCEPTION error_already_set
Chris@16: {
Chris@16:   virtual ~error_already_set();
Chris@16: };
Chris@16: 
Chris@16: // Handles exceptions caught just before returning to Python code.
Chris@16: // Returns true iff an exception was caught.
Chris@16: BOOST_PYTHON_DECL bool handle_exception_impl(function0<void>);
Chris@16: 
Chris@16: template <class T>
Chris@16: bool handle_exception(T f)
Chris@16: {
Chris@16:     return handle_exception_impl(function0<void>(boost::ref(f)));
Chris@16: }
Chris@16: 
Chris@16: namespace detail { inline void rethrow() { throw; } }
Chris@16: 
Chris@16: inline void handle_exception()
Chris@16: {
Chris@16:     handle_exception(detail::rethrow);
Chris@16: }
Chris@16: 
Chris@16: BOOST_PYTHON_DECL void throw_error_already_set();
Chris@16: 
Chris@16: template <class T>
Chris@16: inline T* expect_non_null(T* x)
Chris@16: {
Chris@16:     if (x == 0)
Chris@16:         throw_error_already_set();
Chris@16:     return x;
Chris@16: }
Chris@16: 
Chris@16: // Return source if it is an instance of pytype; throw an appropriate
Chris@16: // exception otherwise.
Chris@16: BOOST_PYTHON_DECL PyObject* pytype_check(PyTypeObject* pytype, PyObject* source);
Chris@16: 
Chris@16: }} // namespace boost::python
Chris@16: 
Chris@16: #endif // ERRORS_DWA052500_H_