{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"cx.tcx.hir_parent_iter(expr.hir_id).nth(1)"}]}
            cx.tcx.hir_parent_iter(expr.hir_id).nth(1)
        let sub = if let Some((_, hir::Node::Expr(parent_expr))) =
            && let hir::ExprKind::Match(arg, [_], hir::MatchSource::ForLoopDesugar) =