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# Abstract classes.
class Event:
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
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