/**
* Sets the character class. It can be any supported unicode property code
* or script. If "X" it will be used as extended unicode sequence (\X)
*
* @param string $class Character class to match
*
* @return UnicodeCharClass
*
* @throws \REBuilder\Exception\Generic
*
* @link http://php.net/manual/en/regexp.reference.escape.php
*/
public function setClass($class)
{
if ($class !== "X" && !\REBuilder\Parser\Rules::validateUnicodePropertyCode($class) && !\REBuilder\Parser\Rules::validateUnicodeScript($class)) {
throw new \REBuilder\Exception\Generic("Unknow unicode character class '{$class}'");
}
$this->_class = $class;
return $this;
}
