24 lines
617 B
Python
24 lines
617 B
Python
"""Generic node traverser visitor"""
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from __future__ import annotations
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from mypy.nodes import Block, MypyFile
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from mypy.traverser import TraverserVisitor
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class TreeFreer(TraverserVisitor):
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def visit_block(self, block: Block) -> None:
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super().visit_block(block)
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block.body.clear()
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def free_tree(tree: MypyFile) -> None:
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"""Free all the ASTs associated with a module.
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This needs to be done recursively, since symbol tables contain
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references to definitions, so those won't be freed but we want their
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contents to be.
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"""
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tree.accept(TreeFreer())
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tree.defs.clear()
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