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Summary
resolves Instagram#341
Adds
_PrecedenceNode
as a helper class to automatically parenthesize child nodes when necessaryTest Plan
Adds basic unit tests for implicit parens and extends fuzz testing.
Notes
I had originally tried to allow
MaybeSentinel
in{l,r}par
attrs but this proved difficulty to get right. It would require numerous changes to the parser to ensure proper construction of_BaseParenthesizableNode
as they are often explicitly constructed with emptylpar
andrpar
attributes.