{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"self.walk_pats_top(std::iter::once(target),"}]}
                self.walk_pats_top(std::iter::once(target), current);
                let old_inside_assignment = mem::replace(&mut self.inside_assignment, true);
                self.inside_assignment = old_inside_assignment;