{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"self.rwu_table.set(writer,"}]}
        self.rwu_table.set(writer, var, rwu_table::RWU { reader: false, writer: false, used });
        let used = self.rwu_table.get_used(writer, var);
        debug!("{:?} defines {:?}: {}", writer, var, self.ln_str(writer));