Only run unused private type rules over finalized bindings #6142
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These changes are based on astral-sh#6142
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…#6142) In astral-sh#6134 and astral-sh#6136, we see some false positives for "shadowed" class definitions. For example, here, the first definition is flagged as unused, since from the perspective of the semantic model (which doesn't understand branching), it appears to be immediately shadowed in the `else`, and thus never used: ```python if sys.version_info >= (3, 11): class _RootLoggerConfiguration(TypedDict, total=False): level: _Level filters: Sequence[str | _FilterType] handlers: Sequence[str] else: class _RootLoggerConfiguration(TypedDict, total=False): level: _Level filters: Sequence[str] handlers: Sequence[str] ``` Instead of looking at _all_ bindings, we should instead look at the "live" bindings, which is similar to how other rules (like unused variables detection) is structured. We thus move the rule from `bindings.rs` (which iterates over _all_ bindings, regardless of whether they're shadowed) to `deferred_scopes.rs`, which iterates over all "live" bindings once a scope has been fully analyzed. `cargo test`
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These changes are based on astral-sh#6142
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Summary
In #6134 and #6136, we see some false positives for "shadowed" class definitions. For example, here, the first definition is flagged as unused, since from the perspective of the semantic model (which doesn't understand branching), it appears to be immediately shadowed in the
else, and thus never used:Instead of looking at all bindings, we should instead look at the "live" bindings, which is similar to how other rules (like unused variables detection) is structured. We thus move the rule from
bindings.rs(which iterates over all bindings, regardless of whether they're shadowed) todeferred_scopes.rs, which iterates over all "live" bindings once a scope has been fully analyzed.Test Plan
cargo test