drupol\phpermutations\Iterators\NGrams

Complexity

Total Complexity

4

Size/Duplication

Total Lines	54
Duplicated Lines	0 %

Test Coverage

Coverage

81.25%

Importance

Changes	1
Bugs	0	Features	0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	1
A	current()	0	3	1
A	rewind()	0	4	1
A	next()	0	4	1

<?php

declare(strict_types=1);

namespace drupol\phpermutations\Iterators;

use function array_slice;

class NGrams extends Shift
{
    /**
     * @var mixed
     */
    protected $currentValue;

    /**
     * NGrams constructor.
     *
     * @param array<int, mixed> $dataset
     *                       The dataset
     * @param int   $length
     *                       The shift length
     */
    public function __construct(array $dataset = [], $length = 1)
    {
        parent::__construct($dataset, $length);

        $this->currentValue = array_slice(
            $this->getDataset(),
            0,
            $length
        );
    }

    /**
     * {@inheritdoc}
     */
    public function current(): mixed
    {
        return $this->currentValue;
    }

    /**
     * {@inheritdoc}
     *
     * @return void
     */
    public function next(): void
    {
        parent::next();
        $this->currentValue = array_slice($this->current, 0, $this->getLength());
    }

    /**
     * {@inheritdoc}
     *
     * @return void
     */
    public function rewind(): void
    {
        parent::rewind();
        $this->currentValue = array_slice($this->current, 0, $this->getLength());
    }
}