Zicht\Itertools\lib\UniqueIterator

Complexity

Total Complexity

4

Size/Duplication

Total Lines	46
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes	3
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	6	1
A	accept()	0	10	2
A	rewind()	0	5	1

<?php
/**
 * @author Boudewijn Schoon <boudewijn@zicht.nl>
 * @copyright Zicht Online <http://zicht.nl>
 */

namespace Zicht\Itertools\lib;

use Zicht\Itertools\lib\Interfaces\FiniteIterableInterface;
use Zicht\Itertools\lib\Traits\FiniteIterableTrait;

/**
 * Class UniqueIterator
 *
 * @package Zicht\Itertools\lib
 */
class UniqueIterator extends \FilterIterator implements FiniteIterableInterface
{
    use FiniteIterableTrait;

    /** @var \Closure */
    private $func;

    /** @var array */
    private $seen;

    /**
     * UniqueIterator constructor.
     *
     * @param \Closure $func
     * @param \Iterator $iterable
     */
    public function __construct(\Closure $func, \Iterator $iterable)
    {
        $this->func = $func;
        $this->seen = [];
        parent::__construct($iterable);
    }

    /**
     * @{inheritDoc}
     */
    public function accept()
    {
        $checkValue = call_user_func($this->func, $this->current(), $this->key());
        if (in_array($checkValue, $this->seen)) {
            return false;
        } else {
            $this->seen [] = $checkValue;
            return true;
        }
    }

    /**
     * @{inheritDoc}
     */
    public function rewind()
    {
        $this->seen = [];
        parent::rewind();
    }
}