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/vendor/fusonic/linq/src/Fusonic/Linq/Iterator/DistinctIterator.php
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<?php
 
/*
* This file is part of Fusonic-linq.
* https://github.com/fusonic/fusonic-linq
*
* (c) Fusonic GmbH
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
 
namespace Fusonic\Linq\Iterator;
 
use Iterator;
 
class DistinctIterator extends \IteratorIterator
{
private $iterator;
private $distinct;
 
public function __construct(Iterator $iterator)
{
$this->iterator = $iterator;
}
 
public function current()
{
return $this->distinct->current();
}
 
public function next()
{
$this->distinct->next();
}
 
public function key()
{
return $this->distinct->key();
}
 
public function valid()
{
return $this->distinct->valid();
}
 
public function rewind()
{
if ($this->distinct === null) {
$this->getDistincts();
}
 
$this->distinct->rewind();
}
 
private function getDistincts()
{
$data = iterator_to_array($this->iterator);
$distinct = array_unique($data);
$this->distinct = new \ArrayIterator($distinct);
}
}