{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"(Int(U(ty::UintTy::U8)),"}]}
            (Int(U(ty::UintTy::U8)), Int(Char)) => Ok(CastKind::U8CharCast), // u8-char-cast
            // * -> Char
            (_, Int(Char)) => Err(CastError::CastToChar),