Method methodOverride

src/IECorePython/WrapperGarbageCollector.cpp:143–184

}

boost::python::object WrapperGarbageCollector::methodOverride( const char *name, PyTypeObject *wrappedType ) const
{
	if( !m_pyObject )
	{
		return boost::python::object();
	}

	// lookup the method on the python instance. this may
	// or may not be an override. a new reference is returned
	// so we must use a handle to manage it.
	boost::python::handle<> methodFromInstance(
		boost::python::allow_null(
			PyObject_GetAttrString(
				m_pyObject,
				const_cast<char*>( name )
			)
		)
	);

	if( !methodFromInstance || !PyMethod_Check( methodFromInstance.get() ) )
	{
		// if the attribute lookup failed, an error will be set, and we
		// need to clear it before returning.
		PyErr_Clear();
		return boost::python::object();
	}

	// lookup the method defined by our type. a borrowed reference
	// is returned so we don't need to use a handle to manage the
	// reference count.
	PyObject *methodFromType = PyDict_GetItemString(
		wrappedType->tp_dict, const_cast<char*>( name )
	);

	// if they're not the same then we have an override
	if( methodFromType != ((PyMethodObject *)methodFromInstance.get())->im_func )
	{
		return boost::python::object( methodFromInstance );
	}

	return boost::python::object();
}