Refactor FunctionArgNamesCheck (N803,N804,N805) #225
Merged
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The previous implementation repeated the N803 (lowercase name) check three times. This change reworks the function's logic to avoid code duplication. It also let me remove some nested function calls.
In the process, I noticed two additional things that could be improved (but I'm only doing one of them here):
We were previously returning after the first naming error, perhaps as an optimization, but I think it's more helpful to return all of the errors we can detect from within this check.
The "ignored names" set is (unnecessarily?) used for the N804/N805 first argument checks. We have some test cases that expected this behavior, so I'm retaining it for backwards compatibility.