SlayerBirden\DataFlow\Pipe\Swap

Complexity

Total Complexity

2

Size/Duplication

Total Lines	39
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

0%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	6	1
A	pass()	0	9	1

<?php
declare(strict_types=1);

namespace SlayerBirden\DataFlow\Pipe;

use SlayerBirden\DataFlow\DataBagInterface;
use SlayerBirden\DataFlow\IdentificationTrait;
use SlayerBirden\DataFlow\PipeInterface;

class Swap implements PipeInterface
{
    use IdentificationTrait;
    /**
     * @var string
     */
    private $id;
    /**
     * @var string
     */
    private $first;
    /**
     * @var string
     */
    private $second;

    public function __construct(string $id, string $first, string $second)
    {
        $this->id = $id;
        $this->first = $first;
        $this->second = $second;
    }

    /**
     * Swap one key with another.
     *
     * @param DataBagInterface $dataBag
     * @return DataBagInterface
     */
    public function pass(DataBagInterface $dataBag): DataBagInterface
    {
        $first = $dataBag[$this->first] ?? null;
        $second = $dataBag[$this->second] ?? null;
        $dataBag[$this->first] = $second;
        $dataBag[$this->second] = $first;

        return $dataBag;
    }
}