public long readLong(Token token) {
        if (token.symbol() != Symbol.DIGITS) {
            throw new IllegalArgumentException("Cannot read long from " + token.symbol());
        }

        CharBuffer cb = readCharBuffer(token);
        int start = token.start();
        return toLong(cb, start);
    }
Gets the original string being parsed.

@return The original string.
exts/jphp-zend-ext/src/main/java/org/develnext/jphp/zend/ext/standard/date/DateTimeTokenizer.java