{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"self.scan_stack.pop_front().unwrap();"}]}
                self.scan_stack.pop_front().unwrap();
            if *self.scan_stack.front().unwrap() == self.buf.index_of_first() {
                self.buf.first_mut().unwrap().size = SIZE_INFINITY;