{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"let"}]}
                    let l128 = IntValue::from_bytes(lc, is_signed);
                    let is_signed = matches!(ty.as_builtin(), Some(BuiltinType::Int(_)));
                    let r128 = IntValue::from_bytes(rc, is_signed);