`N`vdZddlZddlmZddlmZGddeZejfdZ Gdd eZ dS) aGeneric visitor pattern for pytrees. The lib2to3 parser produces a "pytree" - syntax tree consisting of Node and Leaf types. This module implements a visitor pattern for such trees. It also exports a basic "dumping" visitor that dumps a textual representation of a pytree into a stream. PyTreeVisitor: a generic visitor pattern fo pytrees. PyTreeDumper: a configurable "dumper" for displaying pytrees. DumpPyTree(): a convenience function to dump a pytree. N)pytree) pytree_utilsc$eZdZdZdZdZdZdS) PyTreeVisitoraVisitor pattern for pytree trees. Methods named Visit_XXX will be invoked when a node with type XXX is encountered in the tree. The type is either a token type (for Leaf nodes) or grammar symbols (for Node nodes). The return value of Visit_XXX methods is ignored by the visitor. Visitors can modify node contents but must not change the tree structure (e.g. add/remove children and move nodes around). This is a very common visitor pattern in Python code; it's also used in the Python standard library ast module for providing AST visitors. Note: this makes names that aren't style conformant, so such visitor methods need to be marked with # pylint: disable=invalid-name We don't have a choice here, because lib2to3 nodes have under_separated names. For more complex behavior, the visit, DefaultNodeVisit and DefaultLeafVisit methods can be overridden. Don't forget to invoke DefaultNodeVisit for nodes that may have children - otherwise the children will not be visited. c6dtj|}t||rt |||dSt |t jr||dS| |dS)z Visit a node.z Visit_{0}N) formatrNodeNamehasattrgetattr isinstancerLeafDefaultLeafVisitDefaultNodeVisit)selfnodemethods ;lib/python3.11/site-packages/yapf/yapflib/pytree_visitor.pyVisitzPyTreeVisitor.Visit9s    5d ; ; < r=s   %%%%%%6 6 6 6 6 F6 6 6 r$':     :::::=:::::r