lib/yaml/events.py

   1
   2 # Abstract classes.
   3
   4 class Event(object):
   5     def __init__(self, start_mark=None, end_mark=None):
   6         self.start_mark = start_mark
   7         self.end_mark = end_mark
   8     def __repr__(self):
   9         attributes = [key for key in ['anchor', 'tag', 'implicit', 'value']
  10                 if hasattr(self, key)]
  11         arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
  12                 for key in attributes])
  13         return '%s(%s)' % (self.__class__.__name__, arguments)
  14
  15 class NodeEvent(Event):
  16     def __init__(self, anchor, start_mark=None, end_mark=None):
  17         self.anchor = anchor
  18         self.start_mark = start_mark
  19         self.end_mark = end_mark
  20
  21 class CollectionStartEvent(NodeEvent):
  22     def __init__(self, anchor, tag, implicit, start_mark=None, end_mark=None,
  23             flow_style=None):
  24         self.anchor = anchor
  25         self.tag = tag
  26         self.implicit = implicit
  27         self.start_mark = start_mark
  28         self.end_mark = end_mark
  29         self.flow_style = flow_style
  30
  31 class CollectionEndEvent(Event):
  32     pass
  33
  34 # Implementations.
  35
  36 class StreamStartEvent(Event):
  37     def __init__(self, start_mark=None, end_mark=None, encoding=None):
  38         self.start_mark = start_mark
  39         self.end_mark = end_mark
  40         self.encoding = encoding
  41
  42 class StreamEndEvent(Event):
  43     pass
  44
  45 class DocumentStartEvent(Event):
  46     def __init__(self, start_mark=None, end_mark=None,
  47             explicit=None, version=None, tags=None):
  48         self.start_mark = start_mark
  49         self.end_mark = end_mark
  50         self.explicit = explicit
  51         self.version = version
  52         self.tags = tags
  53
  54 class DocumentEndEvent(Event):
  55     def __init__(self, start_mark=None, end_mark=None,
  56             explicit=None):
  57         self.start_mark = start_mark
  58         self.end_mark = end_mark
  59         self.explicit = explicit
  60
  61 class AliasEvent(NodeEvent):
  62     pass
  63
  64 class ScalarEvent(NodeEvent):
  65     def __init__(self, anchor, tag, implicit, value,
  66             start_mark=None, end_mark=None, style=None):
  67         self.anchor = anchor
  68         self.tag = tag
  69         self.implicit = implicit
  70         self.value = value
  71         self.start_mark = start_mark
  72         self.end_mark = end_mark
  73         self.style = style
  74
  75 class SequenceStartEvent(CollectionStartEvent):
  76     pass
  77
  78 class SequenceEndEvent(CollectionEndEvent):
  79     pass
  80
  81 class MappingStartEvent(CollectionStartEvent):
  82     pass
  83
  84 class MappingEndEvent(CollectionEndEvent):
  85     pass
  86