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Python parse tree definitions.
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r. c C sN |\}}}}|s|| j krConstructor that prevents BasePattern from being instantiated.z Cannot instantiate BasePattern)rb r r r )r r r r
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A subclass can define this as a hook for optimizations.
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Does this pattern exactly match a node?
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Initializer. Takes optional type, content, and name.
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Initializer. Takes optional type, content, and name.
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type is None this matches *any* single node (leaf or not),
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Match the pattern's content to the node's children.
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A wildcard pattern can match zero or more nodes.
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Initializer.
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content: optional sequence of subsequences of patterns;
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min: optional minimum number of times to match, default 0
max: optional maximum number of times to match, default HUGE
name: optional name assigned to this match
[*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
equivalent to (a b c | d e | f g h); if content is None,
this is equivalent to '.' in regular expression terms.
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Generator yielding matches for a sequence of nodes.
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Generator yielding matches for a sequence of patterns and nodes.
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patterns: a sequence of patterns
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