{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"|expr:"}]}
            |expr: &hir::Expr<'_>| matches!(expr.kind, hir::ExprKind::Unary(hir::UnOp::Neg, ..));
        let is_negative_int =
        let is_uint = |ty: Ty<'_>| matches!(ty.kind(), ty::Uint(..));