function __construct($sourceName = null, $rootParser = true)
{
$this->sourceName = $sourceName;
$this->rootParser = $rootParser;
if (empty(self::$operatorStr)) {
self::$operatorStr = $this->makeOperatorStr(self::$operators);
$commentSingle = $this->preg_quote(self::$commentSingle);
$commentMultiLeft = $this->preg_quote(self::$commentMultiLeft);
$commentMultiRight = $this->preg_quote(self::$commentMultiRight);
self::$commentMulti = $commentMultiLeft . '.*?' . $commentMultiRight;
self::$whitePattern = '/' . $commentSingle . '[^\\n]*\\s*|(' . self::$commentMulti . ')\\s*|\\s+/Ais';
}
}
