def _next_parse_event(self):
"""
Attempts to get next parsing event and handles errors. When there
are no more valid parsing events, event is set to None.
"""
if self._iterate_events:
try:
# get next parsing event
self._event = next(self._event_generator)
except pyyaml.MarkedYAMLError as error:
# handle parsing error
self._event = None
self._iterate_events = False
start_pos = Position.from_yaml_error(error)
self._create_fatal_error_node(start_pos)
notification = Notification.from_name('SyntaxFatalError')
notification.span = self._fatal_error_node.span
self.notification_handler.report(notification)
except StopIteration:
# handle end of parsing events
self._event = None
self._iterate_events = False
