Sabberworm\CSS\Parser::consume PHP Метод

    private function consume($mValue = 1)
    {
        if (is_string($mValue)) {
            $iLength = $this->strlen($mValue);
            if (!$this->streql($this->substr($this->iCurrentPosition, $iLength), $mValue)) {
                throw new UnexpectedTokenException($mValue, $this->peek(max($iLength, 5)));
            }
            $this->iCurrentPosition += $this->strlen($mValue);
            return $mValue;
        } else {
            if ($this->iCurrentPosition + $mValue > $this->iLength) {
                throw new UnexpectedTokenException($mValue, $this->peek(5), 'count');
            }
            $sResult = $this->substr($this->iCurrentPosition, $mValue);
            $this->iCurrentPosition += $mValue;
            return $sResult;
        }
    }