{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
            let flags: u32 = ((sign == Some(FormatSign::Plus)) as u32)
            // This needs to match `Flag` in library/core/src/fmt/rt.rs.
                | (((sign == Some(FormatSign::Minus)) as u32) << 1)