{"ast_node_type":"function","tokens":[{"end":83,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>) {
impl<'tcx> LateLintPass<'tcx> for TypeIr {
        let res_def_id = match expr.kind {