# Abstract classes. class Event(object): def __init__(self, start_mark=None, end_mark=None): self.start_mark = start_mark self.end_mark = end_mark def __repr__(self): attributes = [key for key in ['anchor', 'tag', 'implicit', 'value'] if hasattr(self, key)] arguments = ', '.join(['%s=%r' % (key, getattr(self, key)) for key in attributes]) return '%s(%s)' % (self.__class__.__name__, arguments) class NodeEvent(Event): def __init__(self, anchor, start_mark=None, end_mark=None): self.anchor = anchor self.start_mark = start_mark self.end_mark = end_mark class CollectionStartEvent(NodeEvent): def __init__(self, anchor, tag, implicit, start_mark=None, end_mark=None, flow_style=None): self.anchor = anchor self.tag = tag self.implicit = implicit self.start_mark = start_mark self.end_mark = end_mark self.flow_style = flow_style class CollectionEndEvent(Event): pass # Implementations. class StreamStartEvent(Event): def __init__(self, start_mark=None, end_mark=None, encoding=None): self.start_mark = start_mark self.end_mark = end_mark self.encoding = encoding class StreamEndEvent(Event): pass class DocumentStartEvent(Event): def __init__(self, start_mark=None, end_mark=None, explicit=None, version=None, tags=None): self.start_mark = start_mark self.end_mark = end_mark self.explicit = explicit self.version = version self.tags = tags class DocumentEndEvent(Event): def __init__(self, start_mark=None, end_mark=None, explicit=None): self.start_mark = start_mark self.end_mark = end_mark self.explicit = explicit class AliasEvent(NodeEvent): pass class ScalarEvent(NodeEvent): def __init__(self, anchor, tag, implicit, value, start_mark=None, end_mark=None, style=None): self.anchor = anchor self.tag = tag self.implicit = implicit self.value = value self.start_mark = start_mark self.end_mark = end_mark self.style = style class SequenceStartEvent(CollectionStartEvent): pass class SequenceEndEvent(CollectionEndEvent): pass class MappingStartEvent(CollectionStartEvent): pass class MappingEndEvent(CollectionEndEvent): pass