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<?php
/* @description Transformation Style Sheets - Revolutionising PHP templating *
* @author Tom Butler [email protected] *
* @copyright 2015 Tom Butler <[email protected]> | https://r.je/ *
* @license http://www.opensource.org/licenses/bsd-license.php BSD License *
* @version 1.0 */
namespace Transphporm\Pseudo;
use \Transphporm\Parser\Tokenizer;
class Nth implements \Transphporm\Pseudo {
private $count = 0;
private $lastParentNode;
public function match($name, $args, \DomElement $element) {
if ($element->parentNode !== $this->lastParentNode) $this->count = 0;
$this->lastParentNode = $element->parentNode;
if ($name !== 'nth-child') return true;
$this->count++;
$criteria = $args[0];
if (is_callable([$this, $criteria])) return $this->$criteria($this->count);
$this->assert(is_numeric($criteria), "Argument passed to 'nth-child' must be 'odd', 'even', or of type int");
return $this->count == $criteria;
}
//TODO: Abstract assertions throughout
private function assert($condition, $error) {
if (!$condition) throw new \Exception($error);
private function odd($num) {
return $num % 2 === 1;
private function even($num) {
return $num % 2 === 0;
Level-2 /
Transphporm
