{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"Fixity::Left"}]}
            Fixity::Left => (left_prec < binop_prec, right_prec <= binop_prec),
        let (mut left_needs_paren, right_needs_paren) = match op.fixity() {
            Fixity::Right => (left_prec <= binop_prec, right_prec < binop_prec),