PeekAndPoke\Component\Psi\Operation\FullSet\SortByOperation

Complexity

Total Complexity

3

Size/Duplication

Total Lines	25
Duplicated Lines	0 %

Test Coverage

Coverage

90.91%

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	apply()	0	18	3

<?php
/**
 * File was created 12.06.2015 12:38
 *
 * @author Karsten J. Gerber <kontakt@karsten-gerber.de>
 */

namespace PeekAndPoke\Component\Psi\Operation\FullSet;

use PeekAndPoke\Component\Psi\FullSetOperation;
use PeekAndPoke\Component\Psi\Operation\AbstractUnaryFunctionOperation;

/**
 * SortByOperation
 *
 * @author Karsten J. Gerber <kontakt@karsten-gerber.de>
 */
class SortByOperation extends AbstractUnaryFunctionOperation implements FullSetOperation
{
    /**
     * @param \Iterator $set
     *
     * @return \Iterator
     */
    public function apply(\Iterator $set)
    {
        $func = $this->function;
        $data = iterator_to_array($set);

        usort($data, function ($i1, $i2) use ($func) {

            $val1 = $func($i1);
            $val2 = $func($i2);

            if ($val1 === $val2) {
                return 0;
            }

            return $val1 > $val2 ? 1 : -1;
        });

        return new \ArrayIterator($data);
    }
}