{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"if"}]}
                    if idx <= FieldIdx::MAX_AS_U32 {
                    let idx = prop.ecx.read_target_usize(idx).discard_err()?.try_into().ok()?;
                        fields.get(FieldIdx::from_u32(idx)).unwrap_or(&Value::Uninit)