FOF30\Less\Parser\Parser::expHelper PHP Метод

    protected function expHelper($lhs, $minP)
    {
        $this->inExp = true;
        $ss = $this->seek();
        while (true) {
            $whiteBefore = isset($this->buffer[$this->count - 1]) && ctype_space($this->buffer[$this->count - 1]);
            // If there is whitespace before the operator, then we require
            // whitespace after the operator for it to be an expression
            $needWhite = $whiteBefore && !$this->inParens;
            if ($this->match(self::$operatorString . ($needWhite ? '\\s' : ''), $m) && self::$precedence[$m[1]] >= $minP) {
                if (!$this->inParens && isset($this->env->currentProperty) && $m[1] == "/" && empty($this->env->supressedDivision)) {
                    foreach (self::$supressDivisionProps as $pattern) {
                        if (preg_match($pattern, $this->env->currentProperty)) {
                            $this->env->supressedDivision = true;
                            break 2;
                        }
                    }
                }
                $whiteAfter = isset($this->buffer[$this->count - 1]) && ctype_space($this->buffer[$this->count - 1]);
                if (!$this->value($rhs)) {
                    break;
                }
                // Peek for next operator to see what to do with rhs
                if ($this->peek(self::$operatorString, $next) && self::$precedence[$next[1]] > self::$precedence[$m[1]]) {
                    $rhs = $this->expHelper($rhs, self::$precedence[$next[1]]);
                }
                $lhs = array('expression', $m[1], $lhs, $rhs, $whiteBefore, $whiteAfter);
                $ss = $this->seek();
                continue;
            }
            break;
        }
        $this->seek($ss);
        return $lhs;
    }