lessc_parser::throwError PHP Method

    public function throwError($msg = "parse error", $count = null)
    {
        $count = is_null($count) ? $this->count : $count;
        $line = $this->line + substr_count(substr($this->buffer, 0, $count), "\n");
        if (!empty($this->sourceName)) {
            $loc = "{$this->sourceName} on line {$line}";
        } else {
            $loc = "line: {$line}";
        }
        // TODO this depends on $this->count
        if ($this->peek("(.*?)(\n|\$)", $m, $count)) {
            throw new exception("{$msg}: failed at `{$m['1']}` {$loc}");
        } else {
            throw new exception("{$msg}: {$loc}");
        }
    }