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File / Folder	Size	Action
.	-
ArrayCollection.php	3.395KB	edt ren
Html5EntityDecoder.php	1.772KB	edt ren
HtmlElement.php	4.043KB	edt ren
HtmlFilter.php	1.434KB	edt ren
LinkParserHelper.php	3.916KB	edt ren
PrioritizedList.php	1.603KB	edt ren
RegexHelper.php	10.017KB	edt ren
SpecReader.php	2.125KB	edt ren
UrlEncoder.php	2.558KB	edt ren
Xml.php	0.721KB	edt ren

<?php

declare(strict_types=1);

/*
 * This file is part of the league/commonmark package.
 *
 * (c) Colin O'Dell <colinodell@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace League\CommonMark\Util;

/**
 * Array collection
 *
 * Provides a wrapper around a standard PHP array.
 *
 * @internal
 *
 * @phpstan-template T
 * @phpstan-implements \IteratorAggregate<int, T>
 * @phpstan-implements \ArrayAccess<int, T>
 */
final class ArrayCollection implements \IteratorAggregate, \Countable, \ArrayAccess
{
    /**
     * @var array<int, mixed>
     * @phpstan-var array<int, T>
     */
    private array $elements;

/**
     * Constructor
     *
     * @param array<int|string, mixed> $elements
     *
     * @phpstan-param array<int, T> $elements
     */
    public function __construct(array $elements = [])
    {
        $this->elements = $elements;
    }

/**
     * @return mixed|false
     *
     * @phpstan-return T|false
     */
    public function first()
    {
        return \reset($this->elements);
    }

/**
     * @return mixed|false
     *
     * @phpstan-return T|false
     */
    public function last()
    {
        return \end($this->elements);
    }

/**
     * Retrieve an external iterator
     *
     * @return \ArrayIterator<int, mixed>
     *
     * @phpstan-return \ArrayIterator<int, T>
     */
    #[\ReturnTypeWillChange]
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->elements);
    }

/**
     * Count elements of an object
     *
     * @return int The count as an integer.
     */
    public function count(): int
    {
        return \count($this->elements);
    }

/**
     * Whether an offset exists
     *
     * {@inheritDoc}
     *
     * @phpstan-param int $offset
     */
    public function offsetExists($offset): bool
    {
        return \array_key_exists($offset, $this->elements);
    }

/**
     * Offset to retrieve
     *
     * {@inheritDoc}
     *
     * @phpstan-param int $offset
     *
     * @phpstan-return T|null
     */
    #[\ReturnTypeWillChange]
    public function offsetGet($offset)
    {
        return $this->elements[$offset] ?? null;
    }

/**
     * Offset to set
     *
     * {@inheritDoc}
     *
     * @phpstan-param int|null $offset
     * @phpstan-param T        $value
     */
    #[\ReturnTypeWillChange]
    public function offsetSet($offset, $value): void
    {
        if ($offset === null) {
            $this->elements[] = $value;
        } else {
            $this->elements[$offset] = $value;
        }
    }

/**
     * Offset to unset
     *
     * {@inheritDoc}
     *
     * @phpstan-param int $offset
     */
    #[\ReturnTypeWillChange]
    public function offsetUnset($offset): void
    {
        if (! \array_key_exists($offset, $this->elements)) {
            return;
        }

unset($this->elements[$offset]);
    }

/**
     * Returns a subset of the array
     *
     * @return array<int, mixed>
     *
     * @phpstan-return array<int, T>
     */
    public function slice(int $offset, ?int $length = null): array
    {
        return \array_slice($this->elements, $offset, $length, true);
    }

/**
     * @return array<int, mixed>
     *
     * @phpstan-return array<int, T>
     */
    public function toArray(): array
    {
        return $this->elements;
    }
}