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Python parse tree definitions.
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Abstract base class for Node and Leaf.
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Compare two nodes for equality.
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Compare two nodes for inequality.
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Compare two nodes for equality.
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Set the prefix for the node (see Leaf class).
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Remove the node from the tree. Returns the position of the node in its
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The node immediately preceding the invocant in their parent's children
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Initializer.
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Equivalent to 'node.children[i] = child'. This method also sets the
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Equivalent to 'node.children.insert(i, child)'. This method also sets
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Equivalent to 'node.children.append(child)'. This method also sets the
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Initializer.
Takes a type constant (a token number < 256), a string value, and an
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Convert raw node information to a Node or Leaf instance.
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grammar rule produces a new complete node, so that the tree is build
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A pattern is a tree matching pattern.
It looks for a specific node type (token or symbol), and
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Returns either self or another node with the same effect.
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Does this pattern exactly match a node?
Returns True if it matches, False if not.
If results is not None, it must be a dict which will be
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Default implementation for non-wildcard patterns.
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Does this pattern exactly match a sequence of nodes?
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Generator yielding all matches for this pattern.
Default implementation for non-wildcard patterns.
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Initializer. Takes optional type, content, and name.
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The content, if given, must be a string.
If a name is given, the matching node is stored in the results
dict under that key.
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Match the pattern's content to the node's children.
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Returns True if it matches, False if not.
If results is not None, it must be a dict which will be
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When returning False, the results dict may still be updated.
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Initializer. Takes optional type, content, and name.
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except if content is not None, in which it only matches
non-leaf nodes that also match the content pattern.
The content, if not None, must be a sequence of Patterns that
must match the node's children exactly. If the content is
given, the type must not be None.
If a name is given, the matching node is stored in the results
dict under that key.
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Match the pattern's content to the node's children.
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When returning False, the results dict may still be updated.
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A wildcard pattern can match zero or more nodes.
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.* .+ .? .{m,n}
(a b c | d e | f)
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except it always uses non-greedy matching.
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Initializer.
Args:
content: optional sequence of subsequences of patterns;
if absent, matches one node;
if present, each subsequence is an alternative [*]
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.
The min and max parameters work as follows:
min=0, max=maxint: .*
min=1, max=maxint: .+
min=0, max=1: .?
min=1, max=1: .
If content is not None, replace the dot with the parenthesized
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Generator yielding matches for a sequence of nodes.
Args:
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results: dict containing named submatches.
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Initializer.
The argument is either a pattern or None. If it is None, this
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lingo). If it is not None, this matches whenever the argument
pattern doesn't have any matches.
N(R*Ri(RRi((s$/sys/lib/python2.7/lib2to3/pytree.pyRT=s cCstS(N(R'(RR7((s$/sys/lib/python2.7/lib2to3/pytree.pyRpJscCst|�dkS(Ni(Rd(RRq((s$/sys/lib/python2.7/lib2to3/pytree.pyRrNsccse|jdkr2t|�dkradifVqan/x!|jj|�D]
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Generator yielding matches for a sequence of patterns and nodes.
Args:
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(count, results) tuples where:
count: the entire sequence of patterns matches nodes[:count];
results: dict containing named submatches.
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