cloak\collection\PairStackable

Complexity

Total Complexity

9

Size/Duplication

Total Lines	85
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

8 Methods

Rating	Name	Duplication	Size	Complexity
A	toArray()	0	4	1
A	isEmpty()	0	4	1
A	count()	0	4	1
A	getIterator()	0	4	1
A	first()	0	5	1
A	last()	0	5	1
A	returnValue()	0	9	2
A	createArray()	0	7	1

<?php

/**
 * This file is part of cloak.
 *
 * (c) Noritaka Horio <holy.shared.design@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace cloak\collection;

use PhpOption\Option;
use PhpCollection\AbstractMap;


/**
 * Trait PairStackable
 * @package cloak\collection
 */
trait PairStackable
{

    /**
     * @var \PhpCollection\Map
     */
    protected $collection;

    /**
     * @return mixed|null
     */
    public function first()
    {
        $first = $this->collection->first();
        return $this->returnValue($first);
    }

    /**
     * @return mixed|null
     */
    public function last()
    {
        $last = $this->collection->last();
        return $this->returnValue($last);
    }

    /**
     * @param Option $value
     * @return mixed|null
     */
    private function returnValue(Option $value)
    {
        if ($value->isEmpty()) {
            return null;
        }
        $kv = $value->get();

        return array_pop($kv);
    }

    /**
     * @return array
     */
    public function toArray()
    {
        return $this->createArray($this->collection);
    }

    /**
     * @param AbstractMap $collection
     * @return array
     */
    protected function createArray(AbstractMap $collection)
    {
        $keys = $collection->keys();
        $values = $collection->values();

        return array_combine($keys, $values);
    }

    /**
     * @return int
     */
    public function isEmpty()
    {
        return $this->collection->isEmpty();
    }

    /**
     * @return int
     */
    public function count()
    {
        return $this->collection->count();
    }

    /**
     * @return \ArrayIterator
     */
    public function getIterator()
    {
        return $this->collection->getIterator();
    }

}