Seboettg\Collection\Lists\ListFeatures\ListOperationsTrait

Complexity

Total Complexity

9

Size/Duplication

Total Lines	44
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	2
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	plus()	0	5	1
A	minus()	0	15	5
A	intersect()	0	9	3

<?php
/*
 * Copyright (C) 2022 Sebastian Böttger <seboettg@gmail.com>
 * You may use, distribute and modify this code under the
 * terms of the MIT license.
 *
 * You should have received a copy of the MIT license with
 * this file. If not, please visit: https://opensource.org/licenses/mit-license.php
 */

namespace Seboettg\Collection\Lists\ListFeatures;

use Seboettg\Collection\Lists\ListInterface;
use function Seboettg\Collection\Lists\emptyList;
use function Seboettg\Collection\Lists\listOf;

/**
 * @property array $array
 */
trait ListOperationsTrait
{
    /**
     * @inheritDoc
     */
    public function plus(iterable $other): ListInterface
    {
        $list = listOf(...$this->array);
        $list->addAll($other);
        return $list;
    }

    /**
     * @inheritDoc
     */
    public function minus(iterable $values): ListInterface
    {
        $valuesList = emptyList();
        if (!$values instanceof ListInterface && is_array($values)) {
            $valuesList->setArray($values);
        } else {
            $valuesList = $values;
        }
        $newInstance = emptyList();
        foreach ($this->array as $value) {
            if (!$valuesList->contains($value)) {
                $newInstance->add($value);
            }
        }
        return $newInstance;
    }

    /**
     * @inheritDoc
     */
    public function intersect(ListInterface $list): ListInterface
    {
        $result = emptyList();
        foreach ($list as $item) {
            if ($this->contains($item)) {

It seems like contains() must be provided by classes using this trait. How about adding it as abstract method to this trait?

                $result->add($item);
            }
        }
        return $result;
    }
}