fix: map_entry FP on struct member
#14151
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Centri3
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Feb 18, 2025
clippy_lints/src/entry.rs
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| fn is_map_or_parent_used(cx: &LateContext<'_>, map: &Expr<'_>, expr: &Expr<'_>) -> bool { | ||
| SpanlessEq::new(cx).eq_expr(map, expr) | ||
| || matches!(map.kind, ExprKind::Field(inner, _) | ExprKind::Index(inner, _, _) if is_map_or_parent_used(cx, inner, expr)) | ||
| } | ||
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I believe for_each_expr would be nicer.
Note this usage of || is clever but hard to read at first.
Also, can you try to document this function a bit? My initial 2min look leaves me a bit confused on mostly the name. I'm not sure if it's misleading or I'm missing context not present in the diff.
I can reroll or look closer later but I believe just the refactoring I've suggested is what this needs.
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Centri3
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Feb 19, 2025
clippy_lints/src/entry.rs
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| /// Check if the given expression is used for each sub-expression in the given map. | ||
| /// For example, in map `a.b.c.my_map`, The expression `a.b.c.my_map`, `a.b.c`, `a.b`, and `a` are | ||
| /// all checked. | ||
| fn is_each_expr_in_map_used<'tcx>(cx: &LateContext<'tcx>, map: &'tcx Expr<'tcx>, expr: &'tcx Expr<'tcx>) -> bool { |
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is_any_expr_in_map_used is closer to what it does, yes?
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fixes #13934
I modified the part for checking if the map is used so that it can check field and index exprs.
changelog: [
map_entry]: fix FP on struct member