Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xls.php
private function getNextToken($formulaData, $baseCell = 'A1')
    {
        // offset: 0; size: 1; token id
        $id = ord($formulaData[0]); // token id
        $name = false; // initialize token name

        switch ($id) {
            case 0x03:
                $name = 'tAdd';
                $size = 1;
                $data = '+';

                break;
            case 0x04:
                $name = 'tSub';
                $size = 1;
                $data = '-';

                break;
            case 0x05:
                $name = 'tMul';
                $size = 1;
                $data = '*';

                break;
            case 0x06:
                $name = 'tDiv';
                $size = 1;
                $data = '/';

                break;
            case 0x07:
                $name = 'tPower';
                $size = 1;
                $data = '^';

                break;
            case 0x08:
                $name = 'tConcat';
                $size = 1;
                $data = '&';

                break;
            case 0x09:
                $name = 'tLT';
                $size = 1;
                $data = '<';

                break;
            case 0x0A:
                $name = 'tLE';
                $size = 1;
                $data = '<=';

                break;
            case 0x0B:
                $name = 'tEQ';
                $size = 1;
                $data = '=';

                break;
            case 0x0C:
                $name = 'tGE';
                $size = 1;
                $data = '>=';

                break;
            case 0x0D:
                $name = 'tGT';
                $size = 1;
                $data = '>';

                break;
            case 0x0E:
                $name = 'tNE';
                $size = 1;
                $data = '<>';

                break;
            case 0x0F:
                $name = 'tIsect';
                $size = 1;
                $data = ' ';

                break;
            case 0x10:
                $name = 'tList';
                $size = 1;
                $data = ',';

                break;
            case 0x11:
                $name = 'tRange';
                $size = 1;
                $data = ':';

                break;
            case 0x12:
                $name = 'tUplus';
                $size = 1;
                $data = '+';

                break;
            case 0x13:
                $name = 'tUminus';
                $size = 1;
                $data = '-';

                break;
            case 0x14:
                $name = 'tPercent';
                $size = 1;
                $data = '%';

                break;
            case 0x15:    //    parenthesis
                $name = 'tParen';
                $size = 1;
                $data = null;

                break;
            case 0x16:    //    missing argument
                $name = 'tMissArg';
                $size = 1;
                $data = '';

                break;
            case 0x17:    //    string
                $name = 'tStr';
                // offset: 1; size: var; Unicode string, 8-bit string length
                $string = self::readUnicodeStringShort(substr($formulaData, 1));
                $size = 1 + $string['size'];
                $data = self::UTF8toExcelDoubleQuoted($string['value']);

                break;
            case 0x19:    //    Special attribute
                // offset: 1; size: 1; attribute type flags:
                switch (ord($formulaData[1])) {
                    case 0x01:
                        $name = 'tAttrVolatile';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x02:
                        $name = 'tAttrIf';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x04:
                        $name = 'tAttrChoose';
                        // offset: 2; size: 2; number of choices in the CHOOSE function ($nc, number of parameters decreased by 1)
                        $nc = self::getUInt2d($formulaData, 2);
                        // offset: 4; size: 2 * $nc
                        // offset: 4 + 2 * $nc; size: 2
                        $size = 2 * $nc + 6;
                        $data = null;

                        break;
                    case 0x08:
                        $name = 'tAttrSkip';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x10:
                        $name = 'tAttrSum';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x40:
                    case 0x41:
                        $name = 'tAttrSpace';
                        $size = 4;
                        // offset: 2; size: 2; space type and position
                        switch (ord($formulaData[2])) {
                            case 0x00:
                                $spacetype = 'type0';

                                break;
                            case 0x01:
                                $spacetype = 'type1';

                                break;
                            case 0x02:
                                $spacetype = 'type2';

                                break;
                            case 0x03:
                                $spacetype = 'type3';

                                break;
                            case 0x04:
                                $spacetype = 'type4';

                                break;
                            case 0x05:
                                $spacetype = 'type5';

                                break;
                            default:
                                throw new Exception('Unrecognized space type in tAttrSpace token');

                                break;
                        }
                        // offset: 3; size: 1; number of inserted spaces/carriage returns
                        $spacecount = ord($formulaData[3]);

                        $data = ['spacetype' => $spacetype, 'spacecount' => $spacecount];

                        break;
                    default:
                        throw new Exception('Unrecognized attribute flag in tAttr token');

                        break;
                }

                break;
            case 0x1C:    //    error code
                // offset: 1; size: 1; error code
                $name = 'tErr';
                $size = 2;
                $data = Xls\ErrorCode::lookup(ord($formulaData[1]));

                break;
            case 0x1D:    //    boolean
                // offset: 1; size: 1; 0 = false, 1 = true;
                $name = 'tBool';
                $size = 2;
                $data = ord($formulaData[1]) ? 'TRUE' : 'FALSE';

                break;
            case 0x1E:    //    integer
                // offset: 1; size: 2; unsigned 16-bit integer
                $name = 'tInt';
                $size = 3;
                $data = self::getUInt2d($formulaData, 1);

                break;
            case 0x1F:    //    number
                // offset: 1; size: 8;
                $name = 'tNum';
                $size = 9;
                $data = self::extractNumber(substr($formulaData, 1));
                $data = str_replace(',', '.', (string) $data); // in case non-English locale
                break;
            case 0x20:    //    array constant
            case 0x40:
            case 0x60:
                // offset: 1; size: 7; not used
                $name = 'tArray';
                $size = 8;
                $data = null;

                break;
            case 0x21:    //    function with fixed number of arguments
            case 0x41:
            case 0x61:
                $name = 'tFunc';
                $size = 3;
                // offset: 1; size: 2; index to built-in sheet function
                switch (self::getUInt2d($formulaData, 1)) {
                    case 2:
                        $function = 'ISNA';
                        $args = 1;

                        break;
                    case 3:
                        $function = 'ISERROR';
                        $args = 1;

                        break;
                    case 10:
                        $function = 'NA';
                        $args = 0;

                        break;
                    case 15:
                        $function = 'SIN';
                        $args = 1;

                        break;
                    case 16:
                        $function = 'COS';
                        $args = 1;

                        break;
                    case 17:
                        $function = 'TAN';
                        $args = 1;

                        break;
                    case 18:
                        $function = 'ATAN';
                        $args = 1;

                        break;
                    case 19:
                        $function = 'PI';
                        $args = 0;

                        break;
                    case 20:
                        $function = 'SQRT';
                        $args = 1;

                        break;
                    case 21:
                        $function = 'EXP';
                        $args = 1;

                        break;
                    case 22:
                        $function = 'LN';
                        $args = 1;

                        break;
                    case 23:
                        $function = 'LOG10';
                        $args = 1;

                        break;
                    case 24:
                        $function = 'ABS';
                        $args = 1;

                        break;
                    case 25:
                        $function = 'INT';
                        $args = 1;

                        break;
                    case 26:
                        $function = 'SIGN';
                        $args = 1;

                        break;
                    case 27:
                        $function = 'ROUND';
                        $args = 2;

                        break;
                    case 30:
                        $function = 'REPT';
                        $args = 2;

                        break;
                    case 31:
                        $function = 'MID';
                        $args = 3;

                        break;
                    case 32:
                        $function = 'LEN';
                        $args = 1;

                        break;
                    case 33:
                        $function = 'VALUE';
                        $args = 1;

                        break;
                    case 34:
                        $function = 'TRUE';
                        $args = 0;

                        break;
                    case 35:
                        $function = 'FALSE';
                        $args = 0;

                        break;
                    case 38:
                        $function = 'NOT';
                        $args = 1;

                        break;
                    case 39:
                        $function = 'MOD';
                        $args = 2;

                        break;
                    case 40:
                        $function = 'DCOUNT';
                        $args = 3;

                        break;
                    case 41:
                        $function = 'DSUM';
                        $args = 3;

                        break;
                    case 42:
                        $function = 'DAVERAGE';
                        $args = 3;

                        break;
                    case 43:
                        $function = 'DMIN';
                        $args = 3;

                        break;
                    case 44:
                        $function = 'DMAX';
                        $args = 3;

                        break;
                    case 45:
                        $function = 'DSTDEV';
                        $args = 3;

                        break;
                    case 48:
                        $function = 'TEXT';
                        $args = 2;

                        break;
                    case 61:
                        $function = 'MIRR';
                        $args = 3;

                        break;
                    case 63:
                        $function = 'RAND';
                        $args = 0;

                        break;
                    case 65:
                        $function = 'DATE';
                        $args = 3;

                        break;
                    case 66:
                        $function = 'TIME';
                        $args = 3;

                        break;
                    case 67:
                        $function = 'DAY';
                        $args = 1;

                        break;
                    case 68:
                        $function = 'MONTH';
                        $args = 1;

                        break;
                    case 69:
                        $function = 'YEAR';
                        $args = 1;

                        break;
                    case 71:
                        $function = 'HOUR';
                        $args = 1;

                        break;
                    case 72:
                        $function = 'MINUTE';
                        $args = 1;

                        break;
                    case 73:
                        $function = 'SECOND';
                        $args = 1;

                        break;
                    case 74:
                        $function = 'NOW';
                        $args = 0;

                        break;
                    case 75:
                        $function = 'AREAS';
                        $args = 1;

                        break;
                    case 76:
                        $function = 'ROWS';
                        $args = 1;

                        break;
                    case 77:
                        $function = 'COLUMNS';
                        $args = 1;

                        break;
                    case 83:
                        $function = 'TRANSPOSE';
                        $args = 1;

                        break;
                    case 86:
                        $function = 'TYPE';
                        $args = 1;

                        break;
                    case 97:
                        $function = 'ATAN2';
                        $args = 2;

                        break;
                    case 98:
                        $function = 'ASIN';
                        $args = 1;

                        break;
                    case 99:
                        $function = 'ACOS';
                        $args = 1;

                        break;
                    case 105:
                        $function = 'ISREF';
                        $args = 1;

                        break;
                    case 111:
                        $function = 'CHAR';
                        $args = 1;

                        break;
                    case 112:
                        $function = 'LOWER';
                        $args = 1;

                        break;
                    case 113:
                        $function = 'UPPER';
                        $args = 1;

                        break;
                    case 114:
                        $function = 'PROPER';
                        $args = 1;

                        break;
                    case 117:
                        $function = 'EXACT';
                        $args = 2;

                        break;
                    case 118:
                        $function = 'TRIM';
                        $args = 1;

                        break;
                    case 119:
                        $function = 'REPLACE';
                        $args = 4;

                        break;
                    case 121:
                        $function = 'CODE';
                        $args = 1;

                        break;
                    case 126:
                        $function = 'ISERR';
                        $args = 1;

                        break;
                    case 127:
                        $function = 'ISTEXT';
                        $args = 1;

                        break;
                    case 128:
                        $function = 'ISNUMBER';
                        $args = 1;

                        break;
                    case 129:
                        $function = 'ISBLANK';
                        $args = 1;

                        break;
                    case 130:
                        $function = 'T';
                        $args = 1;

                        break;
                    case 131:
                        $function = 'N';
                        $args = 1;

                        break;
                    case 140:
                        $function = 'DATEVALUE';
                        $args = 1;

                        break;
                    case 141:
                        $function = 'TIMEVALUE';
                        $args = 1;

                        break;
                    case 142:
                        $function = 'SLN';
                        $args = 3;

                        break;
                    case 143:
                        $function = 'SYD';
                        $args = 4;

                        break;
                    case 162:
                        $function = 'CLEAN';
                        $args = 1;

                        break;
                    case 163:
                        $function = 'MDETERM';
                        $args = 1;

                        break;
                    case 164:
                        $function = 'MINVERSE';
                        $args = 1;

                        break;
                    case 165:
                        $function = 'MMULT';
                        $args = 2;

                        break;
                    case 184:
                        $function = 'FACT';
                        $args = 1;

                        break;
                    case 189:
                        $function = 'DPRODUCT';
                        $args = 3;

                        break;
                    case 190:
                        $function = 'ISNONTEXT';
                        $args = 1;

                        break;
                    case 195:
                        $function = 'DSTDEVP';
                        $args = 3;

                        break;
                    case 196:
                        $function = 'DVARP';
                        $args = 3;

                        break;
                    case 198:
                        $function = 'ISLOGICAL';
                        $args = 1;

                        break;
                    case 199:
                        $function = 'DCOUNTA';
                        $args = 3;

                        break;
                    case 207:
                        $function = 'REPLACEB';
                        $args = 4;

                        break;
                    case 210:
                        $function = 'MIDB';
                        $args = 3;

                        break;
                    case 211:
                        $function = 'LENB';
                        $args = 1;

                        break;
                    case 212:
                        $function = 'ROUNDUP';
                        $args = 2;

                        break;
                    case 213:
                        $function = 'ROUNDDOWN';
                        $args = 2;

                        break;
                    case 214:
                        $function = 'ASC';
                        $args = 1;

                        break;
                    case 215:
                        $function = 'DBCS';
                        $args = 1;

                        break;
                    case 221:
                        $function = 'TODAY';
                        $args = 0;

                        break;
                    case 229:
                        $function = 'SINH';
                        $args = 1;

                        break;
                    case 230:
                        $function = 'COSH';
                        $args = 1;

                        break;
                    case 231:
                        $function = 'TANH';
                        $args = 1;

                        break;
                    case 232:
                        $function = 'ASINH';
                        $args = 1;

                        break;
                    case 233:
                        $function = 'ACOSH';
                        $args = 1;

                        break;
                    case 234:
                        $function = 'ATANH';
                        $args = 1;

                        break;
                    case 235:
                        $function = 'DGET';
                        $args = 3;

                        break;
                    case 244:
                        $function = 'INFO';
                        $args = 1;

                        break;
                    case 252:
                        $function = 'FREQUENCY';
                        $args = 2;

                        break;
                    case 261:
                        $function = 'ERROR.TYPE';
                        $args = 1;

                        break;
                    case 271:
                        $function = 'GAMMALN';
                        $args = 1;

                        break;
                    case 273:
                        $function = 'BINOMDIST';
                        $args = 4;

                        break;
                    case 274:
                        $function = 'CHIDIST';
                        $args = 2;

                        break;
                    case 275:
                        $function = 'CHIINV';
                        $args = 2;

                        break;
                    case 276:
                        $function = 'COMBIN';
                        $args = 2;

                        break;
                    case 277:
                        $function = 'CONFIDENCE';
                        $args = 3;

                        break;
                    case 278:
                        $function = 'CRITBINOM';
                        $args = 3;

                        break;
                    case 279:
                        $function = 'EVEN';
                        $args = 1;

                        break;
                    case 280:
                        $function = 'EXPONDIST';
                        $args = 3;

                        break;
                    case 281:
                        $function = 'FDIST';
                        $args = 3;

                        break;
                    case 282:
                        $function = 'FINV';
                        $args = 3;

                        break;
                    case 283:
                        $function = 'FISHER';
                        $args = 1;

                        break;
                    case 284:
                        $function = 'FISHERINV';
                        $args = 1;

                        break;
                    case 285:
                        $function = 'FLOOR';
                        $args = 2;

                        break;
                    case 286:
                        $function = 'GAMMADIST';
                        $args = 4;

                        break;
                    case 287:
                        $function = 'GAMMAINV';
                        $args = 3;

                        break;
                    case 288:
                        $function = 'CEILING';
                        $args = 2;

                        break;
                    case 289:
                        $function = 'HYPGEOMDIST';
                        $args = 4;

                        break;
                    case 290:
                        $function = 'LOGNORMDIST';
                        $args = 3;

                        break;
                    case 291:
                        $function = 'LOGINV';
                        $args = 3;

                        break;
                    case 292:
                        $function = 'NEGBINOMDIST';
                        $args = 3;

                        break;
                    case 293:
                        $function = 'NORMDIST';
                        $args = 4;

                        break;
                    case 294:
                        $function = 'NORMSDIST';
                        $args = 1;

                        break;
                    case 295:
                        $function = 'NORMINV';
                        $args = 3;

                        break;
                    case 296:
                        $function = 'NORMSINV';
                        $args = 1;

                        break;
                    case 297:
                        $function = 'STANDARDIZE';
                        $args = 3;

                        break;
                    case 298:
                        $function = 'ODD';
                        $args = 1;

                        break;
                    case 299:
                        $function = 'PERMUT';
                        $args = 2;

                        break;
                    case 300:
                        $function = 'POISSON';
                        $args = 3;

                        break;
                    case 301:
                        $function = 'TDIST';
                        $args = 3;

                        break;
                    case 302:
                        $function = 'WEIBULL';
                        $args = 4;

                        break;
                    case 303:
                        $function = 'SUMXMY2';
                        $args = 2;

                        break;
                    case 304:
                        $function = 'SUMX2MY2';
                        $args = 2;

                        break;
                    case 305:
                        $function = 'SUMX2PY2';
                        $args = 2;

                        break;
                    case 306:
                        $function = 'CHITEST';
                        $args = 2;

                        break;
                    case 307:
                        $function = 'CORREL';
                        $args = 2;

                        break;
                    case 308:
                        $function = 'COVAR';
                        $args = 2;

                        break;
                    case 309:
                        $function = 'FORECAST';
                        $args = 3;

                        break;
                    case 310:
                        $function = 'FTEST';
                        $args = 2;

                        break;
                    case 311:
                        $function = 'INTERCEPT';
                        $args = 2;

                        break;
                    case 312:
                        $function = 'PEARSON';
                        $args = 2;

                        break;
                    case 313:
                        $function = 'RSQ';
                        $args = 2;

                        break;
                    case 314:
                        $function = 'STEYX';
                        $args = 2;

                        break;
                    case 315:
                        $function = 'SLOPE';
                        $args = 2;

                        break;
                    case 316:
                        $function = 'TTEST';
                        $args = 4;

                        break;
                    case 325:
                        $function = 'LARGE';
                        $args = 2;

                        break;
                    case 326:
                        $function = 'SMALL';
                        $args = 2;

                        break;
                    case 327:
                        $function = 'QUARTILE';
                        $args = 2;

                        break;
                    case 328:
                        $function = 'PERCENTILE';
                        $args = 2;

                        break;
                    case 331:
                        $function = 'TRIMMEAN';
                        $args = 2;

                        break;
                    case 332:
                        $function = 'TINV';
                        $args = 2;

                        break;
                    case 337:
                        $function = 'POWER';
                        $args = 2;

                        break;
                    case 342:
                        $function = 'RADIANS';
                        $args = 1;

                        break;
                    case 343:
                        $function = 'DEGREES';
                        $args = 1;

                        break;
                    case 346:
                        $function = 'COUNTIF';
                        $args = 2;

                        break;
                    case 347:
                        $function = 'COUNTBLANK';
                        $args = 1;

                        break;
                    case 350:
                        $function = 'ISPMT';
                        $args = 4;

                        break;
                    case 351:
                        $function = 'DATEDIF';
                        $args = 3;

                        break;
                    case 352:
                        $function = 'DATESTRING';
                        $args = 1;

                        break;
                    case 353:
                        $function = 'NUMBERSTRING';
                        $args = 2;

                        break;
                    case 360:
                        $function = 'PHONETIC';
                        $args = 1;

                        break;
                    case 368:
                        $function = 'BAHTTEXT';
                        $args = 1;

                        break;
                    default:
                        throw new Exception('Unrecognized function in formula');

                        break;
                }
                $data = ['function' => $function, 'args' => $args];

                break;
            case 0x22:    //    function with variable number of arguments
            case 0x42:
            case 0x62:
                $name = 'tFuncV';
                $size = 4;
                // offset: 1; size: 1; number of arguments
                $args = ord($formulaData[1]);
                // offset: 2: size: 2; index to built-in sheet function
                $index = self::getUInt2d($formulaData, 2);
                switch ($index) {
                    case 0:
                        $function = 'COUNT';

                        break;
                    case 1:
                        $function = 'IF';

                        break;
                    case 4:
                        $function = 'SUM';

                        break;
                    case 5:
                        $function = 'AVERAGE';

                        break;
                    case 6:
                        $function = 'MIN';

                        break;
                    case 7:
                        $function = 'MAX';

                        break;
                    case 8:
                        $function = 'ROW';

                        break;
                    case 9:
                        $function = 'COLUMN';

                        break;
                    case 11:
                        $function = 'NPV';

                        break;
                    case 12:
                        $function = 'STDEV';

                        break;
                    case 13:
                        $function = 'DOLLAR';

                        break;
                    case 14:
                        $function = 'FIXED';

                        break;
                    case 28:
                        $function = 'LOOKUP';

                        break;
                    case 29:
                        $function = 'INDEX';

                        break;
                    case 36:
                        $function = 'AND';

                        break;
                    case 37:
                        $function = 'OR';

                        break;
                    case 46:
                        $function = 'VAR';

                        break;
                    case 49:
                        $function = 'LINEST';

                        break;
                    case 50:
                        $function = 'TREND';

                        break;
                    case 51:
                        $function = 'LOGEST';

                        break;
                    case 52:
                        $function = 'GROWTH';

                        break;
                    case 56:
                        $function = 'PV';

                        break;
                    case 57:
                        $function = 'FV';

                        break;
                    case 58:
                        $function = 'NPER';

                        break;
                    case 59:
                        $function = 'PMT';

                        break;
                    case 60:
                        $function = 'RATE';

                        break;
                    case 62:
                        $function = 'IRR';

                        break;
                    case 64:
                        $function = 'MATCH';

                        break;
                    case 70:
                        $function = 'WEEKDAY';

                        break;
                    case 78:
                        $function = 'OFFSET';

                        break;
                    case 82:
                        $function = 'SEARCH';

                        break;
                    case 100:
                        $function = 'CHOOSE';

                        break;
                    case 101:
                        $function = 'HLOOKUP';

                        break;
                    case 102:
                        $function = 'VLOOKUP';

                        break;
                    case 109:
                        $function = 'LOG';

                        break;
                    case 115:
                        $function = 'LEFT';

                        break;
                    case 116:
                        $function = 'RIGHT';

                        break;
                    case 120:
                        $function = 'SUBSTITUTE';

                        break;
                    case 124:
                        $function = 'FIND';

                        break;
                    case 125:
                        $function = 'CELL';

                        break;
                    case 144:
                        $function = 'DDB';

                        break;
                    case 148:
                        $function = 'INDIRECT';

                        break;
                    case 167:
                        $function = 'IPMT';

                        break;
                    case 168:
                        $function = 'PPMT';

                        break;
                    case 169:
                        $function = 'COUNTA';

                        break;
                    case 183:
                        $function = 'PRODUCT';

                        break;
                    case 193:
                        $function = 'STDEVP';

                        break;
                    case 194:
                        $function = 'VARP';

                        break;
                    case 197:
                        $function = 'TRUNC';

                        break;
                    case 204:
                        $function = 'USDOLLAR';

                        break;
                    case 205:
                        $function = 'FINDB';

                        break;
                    case 206:
                        $function = 'SEARCHB';

                        break;
                    case 208:
                        $function = 'LEFTB';

                        break;
                    case 209:
                        $function = 'RIGHTB';

                        break;
                    case 216:
                        $function = 'RANK';

                        break;
                    case 219:
                        $function = 'ADDRESS';

                        break;
                    case 220:
                        $function = 'DAYS360';

                        break;
                    case 222:
                        $function = 'VDB';

                        break;
                    case 227:
                        $function = 'MEDIAN';

                        break;
                    case 228:
                        $function = 'SUMPRODUCT';

                        break;
                    case 247:
                        $function = 'DB';

                        break;
                    case 255:
                        $function = '';

                        break;
                    case 269:
                        $function = 'AVEDEV';

                        break;
                    case 270:
                        $function = 'BETADIST';

                        break;
                    case 272:
                        $function = 'BETAINV';

                        break;
                    case 317:
                        $function = 'PROB';

                        break;
                    case 318:
                        $function = 'DEVSQ';

                        break;
                    case 319:
                        $function = 'GEOMEAN';

                        break;
                    case 320:
                        $function = 'HARMEAN';

                        break;
                    case 321:
                        $function = 'SUMSQ';

                        break;
                    case 322:
                        $function = 'KURT';

                        break;
                    case 323:
                        $function = 'SKEW';

                        break;
                    case 324:
                        $function = 'ZTEST';

                        break;
                    case 329:
                        $function = 'PERCENTRANK';

                        break;
                    case 330:
                        $function = 'MODE';

                        break;
                    case 336:
                        $function = 'CONCATENATE';

                        break;
                    case 344:
                        $function = 'SUBTOTAL';

                        break;
                    case 345:
                        $function = 'SUMIF';

                        break;
                    case 354:
                        $function = 'ROMAN';

                        break;
                    case 358:
                        $function = 'GETPIVOTDATA';

                        break;
                    case 359:
                        $function = 'HYPERLINK';

                        break;
                    case 361:
                        $function = 'AVERAGEA';

                        break;
                    case 362:
                        $function = 'MAXA';

                        break;
                    case 363:
                        $function = 'MINA';

                        break;
                    case 364:
                        $function = 'STDEVPA';

                        break;
                    case 365:
                        $function = 'VARPA';

                        break;
                    case 366:
                        $function = 'STDEVA';

                        break;
                    case 367:
                        $function = 'VARA';

                        break;
                    default:
                        throw new Exception('Unrecognized function in formula');

                        break;
                }
                $data = ['function' => $function, 'args' => $args];

                break;
            case 0x23:    //    index to defined name
            case 0x43:
            case 0x63:
                $name = 'tName';
                $size = 5;
                // offset: 1; size: 2; one-based index to definedname record
                $definedNameIndex = self::getUInt2d($formulaData, 1) - 1;
                // offset: 2; size: 2; not used
                $data = $this->definedname[$definedNameIndex]['name'];

                break;
            case 0x24:    //    single cell reference e.g. A5
            case 0x44:
            case 0x64:
                $name = 'tRef';
                $size = 5;
                $data = $this->readBIFF8CellAddress(substr($formulaData, 1, 4));

                break;
            case 0x25:    //    cell range reference to cells in the same sheet (2d)
            case 0x45:
            case 0x65:
                $name = 'tArea';
                $size = 9;
                $data = $this->readBIFF8CellRangeAddress(substr($formulaData, 1, 8));

                break;
            case 0x26:    //    Constant reference sub-expression
            case 0x46:
            case 0x66:
                $name = 'tMemArea';
                // offset: 1; size: 4; not used
                // offset: 5; size: 2; size of the following subexpression
                $subSize = self::getUInt2d($formulaData, 5);
                $size = 7 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 7, $subSize));

                break;
            case 0x27:    //    Deleted constant reference sub-expression
            case 0x47:
            case 0x67:
                $name = 'tMemErr';
                // offset: 1; size: 4; not used
                // offset: 5; size: 2; size of the following subexpression
                $subSize = self::getUInt2d($formulaData, 5);
                $size = 7 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 7, $subSize));

                break;
            case 0x29:    //    Variable reference sub-expression
            case 0x49:
            case 0x69:
                $name = 'tMemFunc';
                // offset: 1; size: 2; size of the following sub-expression
                $subSize = self::getUInt2d($formulaData, 1);
                $size = 3 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 3, $subSize));

                break;
            case 0x2C: // Relative 2d cell reference reference, used in shared formulas and some other places
            case 0x4C:
            case 0x6C:
                $name = 'tRefN';
                $size = 5;
                $data = $this->readBIFF8CellAddressB(substr($formulaData, 1, 4), $baseCell);

                break;
            case 0x2D:    //    Relative 2d range reference
            case 0x4D:
            case 0x6D:
                $name = 'tAreaN';
                $size = 9;
                $data = $this->readBIFF8CellRangeAddressB(substr($formulaData, 1, 8), $baseCell);

                break;
            case 0x39:    //    External name
            case 0x59:
            case 0x79:
                $name = 'tNameX';
                $size = 7;
                // offset: 1; size: 2; index to REF entry in EXTERNSHEET record
                // offset: 3; size: 2; one-based index to DEFINEDNAME or EXTERNNAME record
                $index = self::getUInt2d($formulaData, 3);
                // assume index is to EXTERNNAME record
                $data = $this->externalNames[$index - 1]['name'];
                // offset: 5; size: 2; not used
                break;
            case 0x3A:    //    3d reference to cell
            case 0x5A:
            case 0x7A:
                $name = 'tRef3d';
                $size = 7;

                try {
                    // offset: 1; size: 2; index to REF entry
                    $sheetRange = $this->readSheetRangeByRefIndex(self::getUInt2d($formulaData, 1));
                    // offset: 3; size: 4; cell address
                    $cellAddress = $this->readBIFF8CellAddress(substr($formulaData, 3, 4));

                    $data = "$sheetRange!$cellAddress";
                } catch (PhpSpreadsheetException $e) {
                    // deleted sheet reference
                    $data = '#REF!';
                }

                break;
            case 0x3B:    //    3d reference to cell range
            case 0x5B:
            case 0x7B:
                $name = 'tArea3d';
                $size = 11;

                try {
                    // offset: 1; size: 2; index to REF entry
                    $sheetRange = $this->readSheetRangeByRefIndex(self::getUInt2d($formulaData, 1));
                    // offset: 3; size: 8; cell address
                    $cellRangeAddress = $this->readBIFF8CellRangeAddress(substr($formulaData, 3, 8));

                    $data = "$sheetRange!$cellRangeAddress";
                } catch (PhpSpreadsheetException $e) {
                    // deleted sheet reference
                    $data = '#REF!';
                }

                break;
            // Unknown cases    // don't know how to deal with
            default:
                throw new Exception('Unrecognized token ' . sprintf('%02X', $id) . ' in formula');

                break;
        }

        return [
            'id' => $id,
            'name' => $name,
            'size' => $size,
            'data' => $data,
        ];
    }
private function getNextToken($formulaData, $baseCell = 'A1')
    {
        // offset: 0; size: 1; token id
        $id = ord($formulaData[0]); // token id
        $name = false; // initialize token name

        switch ($id) {
            case 0x03:
                $name = 'tAdd';
                $size = 1;
                $data = '+';

                break;
            case 0x04:
                $name = 'tSub';
                $size = 1;
                $data = '-';

                break;
            case 0x05:
                $name = 'tMul';
                $size = 1;
                $data = '*';

                break;
            case 0x06:
                $name = 'tDiv';
                $size = 1;
                $data = '/';

                break;
            case 0x07:
                $name = 'tPower';
                $size = 1;
                $data = '^';

                break;
            case 0x08:
                $name = 'tConcat';
                $size = 1;
                $data = '&';

                break;
            case 0x09:
                $name = 'tLT';
                $size = 1;
                $data = '<';

                break;
            case 0x0A:
                $name = 'tLE';
                $size = 1;
                $data = '<=';

                break;
            case 0x0B:
                $name = 'tEQ';
                $size = 1;
                $data = '=';

                break;
            case 0x0C:
                $name = 'tGE';
                $size = 1;
                $data = '>=';

                break;
            case 0x0D:
                $name = 'tGT';
                $size = 1;
                $data = '>';

                break;
            case 0x0E:
                $name = 'tNE';
                $size = 1;
                $data = '<>';

                break;
            case 0x0F:
                $name = 'tIsect';
                $size = 1;
                $data = ' ';

                break;
            case 0x10:
                $name = 'tList';
                $size = 1;
                $data = ',';

                break;
            case 0x11:
                $name = 'tRange';
                $size = 1;
                $data = ':';

                break;
            case 0x12:
                $name = 'tUplus';
                $size = 1;
                $data = '+';

                break;
            case 0x13:
                $name = 'tUminus';
                $size = 1;
                $data = '-';

                break;
            case 0x14:
                $name = 'tPercent';
                $size = 1;
                $data = '%';

                break;
            case 0x15:    //    parenthesis
                $name = 'tParen';
                $size = 1;
                $data = null;

                break;
            case 0x16:    //    missing argument
                $name = 'tMissArg';
                $size = 1;
                $data = '';

                break;
            case 0x17:    //    string
                $name = 'tStr';
                // offset: 1; size: var; Unicode string, 8-bit string length
                $string = self::readUnicodeStringShort(substr($formulaData, 1));
                $size = 1 + $string['size'];
                $data = self::UTF8toExcelDoubleQuoted($string['value']);

                break;
            case 0x19:    //    Special attribute
                // offset: 1; size: 1; attribute type flags:
                switch (ord($formulaData[1])) {
                    case 0x01:
                        $name = 'tAttrVolatile';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x02:
                        $name = 'tAttrIf';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x04:
                        $name = 'tAttrChoose';
                        // offset: 2; size: 2; number of choices in the CHOOSE function ($nc, number of parameters decreased by 1)
                        $nc = self::getUInt2d($formulaData, 2);
                        // offset: 4; size: 2 * $nc
                        // offset: 4 + 2 * $nc; size: 2
                        $size = 2 * $nc + 6;
                        $data = null;

                        break;
                    case 0x08:
                        $name = 'tAttrSkip';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x10:
                        $name = 'tAttrSum';
                        $size = 4;
                        $data = null;

                        break;
                    case 0x40:
                    case 0x41:
                        $name = 'tAttrSpace';
                        $size = 4;
                        // offset: 2; size: 2; space type and position
                        switch (ord($formulaData[2])) {
                            case 0x00:
                                $spacetype = 'type0';

                                break;
                            case 0x01:
                                $spacetype = 'type1';

                                break;
                            case 0x02:
                                $spacetype = 'type2';

                                break;
                            case 0x03:
                                $spacetype = 'type3';

                                break;
                            case 0x04:
                                $spacetype = 'type4';

                                break;
                            case 0x05:
                                $spacetype = 'type5';

                                break;
                            default:
                                throw new Exception('Unrecognized space type in tAttrSpace token');

                                break;
                        }
                        // offset: 3; size: 1; number of inserted spaces/carriage returns
                        $spacecount = ord($formulaData[3]);

                        $data = ['spacetype' => $spacetype, 'spacecount' => $spacecount];

                        break;
                    default:
                        throw new Exception('Unrecognized attribute flag in tAttr token');

                        break;
                }

                break;
            case 0x1C:    //    error code
                // offset: 1; size: 1; error code
                $name = 'tErr';
                $size = 2;
                $data = Xls\ErrorCode::lookup(ord($formulaData[1]));

                break;
            case 0x1D:    //    boolean
                // offset: 1; size: 1; 0 = false, 1 = true;
                $name = 'tBool';
                $size = 2;
                $data = ord($formulaData[1]) ? 'TRUE' : 'FALSE';

                break;
            case 0x1E:    //    integer
                // offset: 1; size: 2; unsigned 16-bit integer
                $name = 'tInt';
                $size = 3;
                $data = self::getUInt2d($formulaData, 1);

                break;
            case 0x1F:    //    number
                // offset: 1; size: 8;
                $name = 'tNum';
                $size = 9;
                $data = self::extractNumber(substr($formulaData, 1));
                $data = str_replace(',', '.', (string) $data); // in case non-English locale
                break;
            case 0x20:    //    array constant
            case 0x40:
            case 0x60:
                // offset: 1; size: 7; not used
                $name = 'tArray';
                $size = 8;
                $data = null;

                break;
            case 0x21:    //    function with fixed number of arguments
            case 0x41:
            case 0x61:
                $name = 'tFunc';
                $size = 3;
                // offset: 1; size: 2; index to built-in sheet function
                switch (self::getUInt2d($formulaData, 1)) {
                    case 2:
                        $function = 'ISNA';
                        $args = 1;

                        break;
                    case 3:
                        $function = 'ISERROR';
                        $args = 1;

                        break;
                    case 10:
                        $function = 'NA';
                        $args = 0;

                        break;
                    case 15:
                        $function = 'SIN';
                        $args = 1;

                        break;
                    case 16:
                        $function = 'COS';
                        $args = 1;

                        break;
                    case 17:
                        $function = 'TAN';
                        $args = 1;

                        break;
                    case 18:
                        $function = 'ATAN';
                        $args = 1;

                        break;
                    case 19:
                        $function = 'PI';
                        $args = 0;

                        break;
                    case 20:
                        $function = 'SQRT';
                        $args = 1;

                        break;
                    case 21:
                        $function = 'EXP';
                        $args = 1;

                        break;
                    case 22:
                        $function = 'LN';
                        $args = 1;

                        break;
                    case 23:
                        $function = 'LOG10';
                        $args = 1;

                        break;
                    case 24:
                        $function = 'ABS';
                        $args = 1;

                        break;
                    case 25:
                        $function = 'INT';
                        $args = 1;

                        break;
                    case 26:
                        $function = 'SIGN';
                        $args = 1;

                        break;
                    case 27:
                        $function = 'ROUND';
                        $args = 2;

                        break;
                    case 30:
                        $function = 'REPT';
                        $args = 2;

                        break;
                    case 31:
                        $function = 'MID';
                        $args = 3;

                        break;
                    case 32:
                        $function = 'LEN';
                        $args = 1;

                        break;
                    case 33:
                        $function = 'VALUE';
                        $args = 1;

                        break;
                    case 34:
                        $function = 'TRUE';
                        $args = 0;

                        break;
                    case 35:
                        $function = 'FALSE';
                        $args = 0;

                        break;
                    case 38:
                        $function = 'NOT';
                        $args = 1;

                        break;
                    case 39:
                        $function = 'MOD';
                        $args = 2;

                        break;
                    case 40:
                        $function = 'DCOUNT';
                        $args = 3;

                        break;
                    case 41:
                        $function = 'DSUM';
                        $args = 3;

                        break;
                    case 42:
                        $function = 'DAVERAGE';
                        $args = 3;

                        break;
                    case 43:
                        $function = 'DMIN';
                        $args = 3;

                        break;
                    case 44:
                        $function = 'DMAX';
                        $args = 3;

                        break;
                    case 45:
                        $function = 'DSTDEV';
                        $args = 3;

                        break;
                    case 48:
                        $function = 'TEXT';
                        $args = 2;

                        break;
                    case 61:
                        $function = 'MIRR';
                        $args = 3;

                        break;
                    case 63:
                        $function = 'RAND';
                        $args = 0;

                        break;
                    case 65:
                        $function = 'DATE';
                        $args = 3;

                        break;
                    case 66:
                        $function = 'TIME';
                        $args = 3;

                        break;
                    case 67:
                        $function = 'DAY';
                        $args = 1;

                        break;
                    case 68:
                        $function = 'MONTH';
                        $args = 1;

                        break;
                    case 69:
                        $function = 'YEAR';
                        $args = 1;

                        break;
                    case 71:
                        $function = 'HOUR';
                        $args = 1;

                        break;
                    case 72:
                        $function = 'MINUTE';
                        $args = 1;

                        break;
                    case 73:
                        $function = 'SECOND';
                        $args = 1;

                        break;
                    case 74:
                        $function = 'NOW';
                        $args = 0;

                        break;
                    case 75:
                        $function = 'AREAS';
                        $args = 1;

                        break;
                    case 76:
                        $function = 'ROWS';
                        $args = 1;

                        break;
                    case 77:
                        $function = 'COLUMNS';
                        $args = 1;

                        break;
                    case 83:
                        $function = 'TRANSPOSE';
                        $args = 1;

                        break;
                    case 86:
                        $function = 'TYPE';
                        $args = 1;

                        break;
                    case 97:
                        $function = 'ATAN2';
                        $args = 2;

                        break;
                    case 98:
                        $function = 'ASIN';
                        $args = 1;

                        break;
                    case 99:
                        $function = 'ACOS';
                        $args = 1;

                        break;
                    case 105:
                        $function = 'ISREF';
                        $args = 1;

                        break;
                    case 111:
                        $function = 'CHAR';
                        $args = 1;

                        break;
                    case 112:
                        $function = 'LOWER';
                        $args = 1;

                        break;
                    case 113:
                        $function = 'UPPER';
                        $args = 1;

                        break;
                    case 114:
                        $function = 'PROPER';
                        $args = 1;

                        break;
                    case 117:
                        $function = 'EXACT';
                        $args = 2;

                        break;
                    case 118:
                        $function = 'TRIM';
                        $args = 1;

                        break;
                    case 119:
                        $function = 'REPLACE';
                        $args = 4;

                        break;
                    case 121:
                        $function = 'CODE';
                        $args = 1;

                        break;
                    case 126:
                        $function = 'ISERR';
                        $args = 1;

                        break;
                    case 127:
                        $function = 'ISTEXT';
                        $args = 1;

                        break;
                    case 128:
                        $function = 'ISNUMBER';
                        $args = 1;

                        break;
                    case 129:
                        $function = 'ISBLANK';
                        $args = 1;

                        break;
                    case 130:
                        $function = 'T';
                        $args = 1;

                        break;
                    case 131:
                        $function = 'N';
                        $args = 1;

                        break;
                    case 140:
                        $function = 'DATEVALUE';
                        $args = 1;

                        break;
                    case 141:
                        $function = 'TIMEVALUE';
                        $args = 1;

                        break;
                    case 142:
                        $function = 'SLN';
                        $args = 3;

                        break;
                    case 143:
                        $function = 'SYD';
                        $args = 4;

                        break;
                    case 162:
                        $function = 'CLEAN';
                        $args = 1;

                        break;
                    case 163:
                        $function = 'MDETERM';
                        $args = 1;

                        break;
                    case 164:
                        $function = 'MINVERSE';
                        $args = 1;

                        break;
                    case 165:
                        $function = 'MMULT';
                        $args = 2;

                        break;
                    case 184:
                        $function = 'FACT';
                        $args = 1;

                        break;
                    case 189:
                        $function = 'DPRODUCT';
                        $args = 3;

                        break;
                    case 190:
                        $function = 'ISNONTEXT';
                        $args = 1;

                        break;
                    case 195:
                        $function = 'DSTDEVP';
                        $args = 3;

                        break;
                    case 196:
                        $function = 'DVARP';
                        $args = 3;

                        break;
                    case 198:
                        $function = 'ISLOGICAL';
                        $args = 1;

                        break;
                    case 199:
                        $function = 'DCOUNTA';
                        $args = 3;

                        break;
                    case 207:
                        $function = 'REPLACEB';
                        $args = 4;

                        break;
                    case 210:
                        $function = 'MIDB';
                        $args = 3;

                        break;
                    case 211:
                        $function = 'LENB';
                        $args = 1;

                        break;
                    case 212:
                        $function = 'ROUNDUP';
                        $args = 2;

                        break;
                    case 213:
                        $function = 'ROUNDDOWN';
                        $args = 2;

                        break;
                    case 214:
                        $function = 'ASC';
                        $args = 1;

                        break;
                    case 215:
                        $function = 'DBCS';
                        $args = 1;

                        break;
                    case 221:
                        $function = 'TODAY';
                        $args = 0;

                        break;
                    case 229:
                        $function = 'SINH';
                        $args = 1;

                        break;
                    case 230:
                        $function = 'COSH';
                        $args = 1;

                        break;
                    case 231:
                        $function = 'TANH';
                        $args = 1;

                        break;
                    case 232:
                        $function = 'ASINH';
                        $args = 1;

                        break;
                    case 233:
                        $function = 'ACOSH';
                        $args = 1;

                        break;
                    case 234:
                        $function = 'ATANH';
                        $args = 1;

                        break;
                    case 235:
                        $function = 'DGET';
                        $args = 3;

                        break;
                    case 244:
                        $function = 'INFO';
                        $args = 1;

                        break;
                    case 252:
                        $function = 'FREQUENCY';
                        $args = 2;

                        break;
                    case 261:
                        $function = 'ERROR.TYPE';
                        $args = 1;

                        break;
                    case 271:
                        $function = 'GAMMALN';
                        $args = 1;

                        break;
                    case 273:
                        $function = 'BINOMDIST';
                        $args = 4;

                        break;
                    case 274:
                        $function = 'CHIDIST';
                        $args = 2;

                        break;
                    case 275:
                        $function = 'CHIINV';
                        $args = 2;

                        break;
                    case 276:
                        $function = 'COMBIN';
                        $args = 2;

                        break;
                    case 277:
                        $function = 'CONFIDENCE';
                        $args = 3;

                        break;
                    case 278:
                        $function = 'CRITBINOM';
                        $args = 3;

                        break;
                    case 279:
                        $function = 'EVEN';
                        $args = 1;

                        break;
                    case 280:
                        $function = 'EXPONDIST';
                        $args = 3;

                        break;
                    case 281:
                        $function = 'FDIST';
                        $args = 3;

                        break;
                    case 282:
                        $function = 'FINV';
                        $args = 3;

                        break;
                    case 283:
                        $function = 'FISHER';
                        $args = 1;

                        break;
                    case 284:
                        $function = 'FISHERINV';
                        $args = 1;

                        break;
                    case 285:
                        $function = 'FLOOR';
                        $args = 2;

                        break;
                    case 286:
                        $function = 'GAMMADIST';
                        $args = 4;

                        break;
                    case 287:
                        $function = 'GAMMAINV';
                        $args = 3;

                        break;
                    case 288:
                        $function = 'CEILING';
                        $args = 2;

                        break;
                    case 289:
                        $function = 'HYPGEOMDIST';
                        $args = 4;

                        break;
                    case 290:
                        $function = 'LOGNORMDIST';
                        $args = 3;

                        break;
                    case 291:
                        $function = 'LOGINV';
                        $args = 3;

                        break;
                    case 292:
                        $function = 'NEGBINOMDIST';
                        $args = 3;

                        break;
                    case 293:
                        $function = 'NORMDIST';
                        $args = 4;

                        break;
                    case 294:
                        $function = 'NORMSDIST';
                        $args = 1;

                        break;
                    case 295:
                        $function = 'NORMINV';
                        $args = 3;

                        break;
                    case 296:
                        $function = 'NORMSINV';
                        $args = 1;

                        break;
                    case 297:
                        $function = 'STANDARDIZE';
                        $args = 3;

                        break;
                    case 298:
                        $function = 'ODD';
                        $args = 1;

                        break;
                    case 299:
                        $function = 'PERMUT';
                        $args = 2;

                        break;
                    case 300:
                        $function = 'POISSON';
                        $args = 3;

                        break;
                    case 301:
                        $function = 'TDIST';
                        $args = 3;

                        break;
                    case 302:
                        $function = 'WEIBULL';
                        $args = 4;

                        break;
                    case 303:
                        $function = 'SUMXMY2';
                        $args = 2;

                        break;
                    case 304:
                        $function = 'SUMX2MY2';
                        $args = 2;

                        break;
                    case 305:
                        $function = 'SUMX2PY2';
                        $args = 2;

                        break;
                    case 306:
                        $function = 'CHITEST';
                        $args = 2;

                        break;
                    case 307:
                        $function = 'CORREL';
                        $args = 2;

                        break;
                    case 308:
                        $function = 'COVAR';
                        $args = 2;

                        break;
                    case 309:
                        $function = 'FORECAST';
                        $args = 3;

                        break;
                    case 310:
                        $function = 'FTEST';
                        $args = 2;

                        break;
                    case 311:
                        $function = 'INTERCEPT';
                        $args = 2;

                        break;
                    case 312:
                        $function = 'PEARSON';
                        $args = 2;

                        break;
                    case 313:
                        $function = 'RSQ';
                        $args = 2;

                        break;
                    case 314:
                        $function = 'STEYX';
                        $args = 2;

                        break;
                    case 315:
                        $function = 'SLOPE';
                        $args = 2;

                        break;
                    case 316:
                        $function = 'TTEST';
                        $args = 4;

                        break;
                    case 325:
                        $function = 'LARGE';
                        $args = 2;

                        break;
                    case 326:
                        $function = 'SMALL';
                        $args = 2;

                        break;
                    case 327:
                        $function = 'QUARTILE';
                        $args = 2;

                        break;
                    case 328:
                        $function = 'PERCENTILE';
                        $args = 2;

                        break;
                    case 331:
                        $function = 'TRIMMEAN';
                        $args = 2;

                        break;
                    case 332:
                        $function = 'TINV';
                        $args = 2;

                        break;
                    case 337:
                        $function = 'POWER';
                        $args = 2;

                        break;
                    case 342:
                        $function = 'RADIANS';
                        $args = 1;

                        break;
                    case 343:
                        $function = 'DEGREES';
                        $args = 1;

                        break;
                    case 346:
                        $function = 'COUNTIF';
                        $args = 2;

                        break;
                    case 347:
                        $function = 'COUNTBLANK';
                        $args = 1;

                        break;
                    case 350:
                        $function = 'ISPMT';
                        $args = 4;

                        break;
                    case 351:
                        $function = 'DATEDIF';
                        $args = 3;

                        break;
                    case 352:
                        $function = 'DATESTRING';
                        $args = 1;

                        break;
                    case 353:
                        $function = 'NUMBERSTRING';
                        $args = 2;

                        break;
                    case 360:
                        $function = 'PHONETIC';
                        $args = 1;

                        break;
                    case 368:
                        $function = 'BAHTTEXT';
                        $args = 1;

                        break;
                    default:
                        throw new Exception('Unrecognized function in formula');

                        break;
                }
                $data = ['function' => $function, 'args' => $args];

                break;
            case 0x22:    //    function with variable number of arguments
            case 0x42:
            case 0x62:
                $name = 'tFuncV';
                $size = 4;
                // offset: 1; size: 1; number of arguments
                $args = ord($formulaData[1]);
                // offset: 2: size: 2; index to built-in sheet function
                $index = self::getUInt2d($formulaData, 2);
                switch ($index) {
                    case 0:
                        $function = 'COUNT';

                        break;
                    case 1:
                        $function = 'IF';

                        break;
                    case 4:
                        $function = 'SUM';

                        break;
                    case 5:
                        $function = 'AVERAGE';

                        break;
                    case 6:
                        $function = 'MIN';

                        break;
                    case 7:
                        $function = 'MAX';

                        break;
                    case 8:
                        $function = 'ROW';

                        break;
                    case 9:
                        $function = 'COLUMN';

                        break;
                    case 11:
                        $function = 'NPV';

                        break;
                    case 12:
                        $function = 'STDEV';

                        break;
                    case 13:
                        $function = 'DOLLAR';

                        break;
                    case 14:
                        $function = 'FIXED';

                        break;
                    case 28:
                        $function = 'LOOKUP';

                        break;
                    case 29:
                        $function = 'INDEX';

                        break;
                    case 36:
                        $function = 'AND';

                        break;
                    case 37:
                        $function = 'OR';

                        break;
                    case 46:
                        $function = 'VAR';

                        break;
                    case 49:
                        $function = 'LINEST';

                        break;
                    case 50:
                        $function = 'TREND';

                        break;
                    case 51:
                        $function = 'LOGEST';

                        break;
                    case 52:
                        $function = 'GROWTH';

                        break;
                    case 56:
                        $function = 'PV';

                        break;
                    case 57:
                        $function = 'FV';

                        break;
                    case 58:
                        $function = 'NPER';

                        break;
                    case 59:
                        $function = 'PMT';

                        break;
                    case 60:
                        $function = 'RATE';

                        break;
                    case 62:
                        $function = 'IRR';

                        break;
                    case 64:
                        $function = 'MATCH';

                        break;
                    case 70:
                        $function = 'WEEKDAY';

                        break;
                    case 78:
                        $function = 'OFFSET';

                        break;
                    case 82:
                        $function = 'SEARCH';

                        break;
                    case 100:
                        $function = 'CHOOSE';

                        break;
                    case 101:
                        $function = 'HLOOKUP';

                        break;
                    case 102:
                        $function = 'VLOOKUP';

                        break;
                    case 109:
                        $function = 'LOG';

                        break;
                    case 115:
                        $function = 'LEFT';

                        break;
                    case 116:
                        $function = 'RIGHT';

                        break;
                    case 120:
                        $function = 'SUBSTITUTE';

                        break;
                    case 124:
                        $function = 'FIND';

                        break;
                    case 125:
                        $function = 'CELL';

                        break;
                    case 144:
                        $function = 'DDB';

                        break;
                    case 148:
                        $function = 'INDIRECT';

                        break;
                    case 167:
                        $function = 'IPMT';

                        break;
                    case 168:
                        $function = 'PPMT';

                        break;
                    case 169:
                        $function = 'COUNTA';

                        break;
                    case 183:
                        $function = 'PRODUCT';

                        break;
                    case 193:
                        $function = 'STDEVP';

                        break;
                    case 194:
                        $function = 'VARP';

                        break;
                    case 197:
                        $function = 'TRUNC';

                        break;
                    case 204:
                        $function = 'USDOLLAR';

                        break;
                    case 205:
                        $function = 'FINDB';

                        break;
                    case 206:
                        $function = 'SEARCHB';

                        break;
                    case 208:
                        $function = 'LEFTB';

                        break;
                    case 209:
                        $function = 'RIGHTB';

                        break;
                    case 216:
                        $function = 'RANK';

                        break;
                    case 219:
                        $function = 'ADDRESS';

                        break;
                    case 220:
                        $function = 'DAYS360';

                        break;
                    case 222:
                        $function = 'VDB';

                        break;
                    case 227:
                        $function = 'MEDIAN';

                        break;
                    case 228:
                        $function = 'SUMPRODUCT';

                        break;
                    case 247:
                        $function = 'DB';

                        break;
                    case 255:
                        $function = '';

                        break;
                    case 269:
                        $function = 'AVEDEV';

                        break;
                    case 270:
                        $function = 'BETADIST';

                        break;
                    case 272:
                        $function = 'BETAINV';

                        break;
                    case 317:
                        $function = 'PROB';

                        break;
                    case 318:
                        $function = 'DEVSQ';

                        break;
                    case 319:
                        $function = 'GEOMEAN';

                        break;
                    case 320:
                        $function = 'HARMEAN';

                        break;
                    case 321:
                        $function = 'SUMSQ';

                        break;
                    case 322:
                        $function = 'KURT';

                        break;
                    case 323:
                        $function = 'SKEW';

                        break;
                    case 324:
                        $function = 'ZTEST';

                        break;
                    case 329:
                        $function = 'PERCENTRANK';

                        break;
                    case 330:
                        $function = 'MODE';

                        break;
                    case 336:
                        $function = 'CONCATENATE';

                        break;
                    case 344:
                        $function = 'SUBTOTAL';

                        break;
                    case 345:
                        $function = 'SUMIF';

                        break;
                    case 354:
                        $function = 'ROMAN';

                        break;
                    case 358:
                        $function = 'GETPIVOTDATA';

                        break;
                    case 359:
                        $function = 'HYPERLINK';

                        break;
                    case 361:
                        $function = 'AVERAGEA';

                        break;
                    case 362:
                        $function = 'MAXA';

                        break;
                    case 363:
                        $function = 'MINA';

                        break;
                    case 364:
                        $function = 'STDEVPA';

                        break;
                    case 365:
                        $function = 'VARPA';

                        break;
                    case 366:
                        $function = 'STDEVA';

                        break;
                    case 367:
                        $function = 'VARA';

                        break;
                    default:
                        throw new Exception('Unrecognized function in formula');

                        break;
                }
                $data = ['function' => $function, 'args' => $args];

                break;
            case 0x23:    //    index to defined name
            case 0x43:
            case 0x63:
                $name = 'tName';
                $size = 5;
                // offset: 1; size: 2; one-based index to definedname record
                $definedNameIndex = self::getUInt2d($formulaData, 1) - 1;
                // offset: 2; size: 2; not used
                $data = $this->definedname[$definedNameIndex]['name'];

                break;
            case 0x24:    //    single cell reference e.g. A5
            case 0x44:
            case 0x64:
                $name = 'tRef';
                $size = 5;
                $data = $this->readBIFF8CellAddress(substr($formulaData, 1, 4));

                break;
            case 0x25:    //    cell range reference to cells in the same sheet (2d)
            case 0x45:
            case 0x65:
                $name = 'tArea';
                $size = 9;
                $data = $this->readBIFF8CellRangeAddress(substr($formulaData, 1, 8));

                break;
            case 0x26:    //    Constant reference sub-expression
            case 0x46:
            case 0x66:
                $name = 'tMemArea';
                // offset: 1; size: 4; not used
                // offset: 5; size: 2; size of the following subexpression
                $subSize = self::getUInt2d($formulaData, 5);
                $size = 7 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 7, $subSize));

                break;
            case 0x27:    //    Deleted constant reference sub-expression
            case 0x47:
            case 0x67:
                $name = 'tMemErr';
                // offset: 1; size: 4; not used
                // offset: 5; size: 2; size of the following subexpression
                $subSize = self::getUInt2d($formulaData, 5);
                $size = 7 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 7, $subSize));

                break;
            case 0x29:    //    Variable reference sub-expression
            case 0x49:
            case 0x69:
                $name = 'tMemFunc';
                // offset: 1; size: 2; size of the following sub-expression
                $subSize = self::getUInt2d($formulaData, 1);
                $size = 3 + $subSize;
                $data = $this->getFormulaFromData(substr($formulaData, 3, $subSize));

                break;
            case 0x2C: // Relative 2d cell reference reference, used in shared formulas and some other places
            case 0x4C:
            case 0x6C:
                $name = 'tRefN';
                $size = 5;
                $data = $this->readBIFF8CellAddressB(substr($formulaData, 1, 4), $baseCell);

                break;
            case 0x2D:    //    Relative 2d range reference
            case 0x4D:
            case 0x6D:
                $name = 'tAreaN';
                $size = 9;
                $data = $this->readBIFF8CellRangeAddressB(substr($formulaData, 1, 8), $baseCell);

                break;
            case 0x39:    //    External name
            case 0x59:
            case 0x79:
                $name = 'tNameX';
                $size = 7;
                // offset: 1; size: 2; index to REF entry in EXTERNSHEET record
                // offset: 3; size: 2; one-based index to DEFINEDNAME or EXTERNNAME record
                $index = self::getUInt2d($formulaData, 3);
                // assume index is to EXTERNNAME record
                $data = $this->externalNames[$index - 1]['name'];
                // offset: 5; size: 2; not used
                break;
            case 0x3A:    //    3d reference to cell
            case 0x5A:
            case 0x7A:
                $name = 'tRef3d';
                $size = 7;

                try {
                    // offset: 1; size: 2; index to REF entry
                    $sheetRange = $this->readSheetRangeByRefIndex(self::getUInt2d($formulaData, 1));
                    // offset: 3; size: 4; cell address
                    $cellAddress = $this->readBIFF8CellAddress(substr($formulaData, 3, 4));

                    $data = "$sheetRange!$cellAddress";
                } catch (PhpSpreadsheetException $e) {
                    // deleted sheet reference
                    $data = '#REF!';
                }

                break;
            case 0x3B:    //    3d reference to cell range
            case 0x5B:
            case 0x7B:
                $name = 'tArea3d';
                $size = 11;

                try {
                    // offset: 1; size: 2; index to REF entry
                    $sheetRange = $this->readSheetRangeByRefIndex(self::getUInt2d($formulaData, 1));
                    // offset: 3; size: 8; cell address
                    $cellRangeAddress = $this->readBIFF8CellRangeAddress(substr($formulaData, 3, 8));

                    $data = "$sheetRange!$cellRangeAddress";
                } catch (PhpSpreadsheetException $e) {
                    // deleted sheet reference
                    $data = '#REF!';
                }

                break;
            // Unknown cases    // don't know how to deal with
            default:
                throw new Exception('Unrecognized token ' . sprintf('%02X', $id) . ' in formula');

                break;
        }

        return [
            'id' => $id,
            'name' => $name,
            'size' => $size,
            'data' => $data,
        ];
    }
Fetch next token from binary formula data.

@param string $formulaData Formula data
@param string $baseCell Base cell, only needed when formula contains tRefN tokens, e.g. with shared formulas

@throws Exception

@return array