110 lines
2.6 KiB
PHP
110 lines
2.6 KiB
PHP
<?php
|
|
|
|
/**
|
|
* PHP Basics
|
|
*
|
|
* Copyright (C) 2024 Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
declare(strict_types=1);
|
|
|
|
namespace OCC\Basics\InterfaceTraits;
|
|
|
|
use ArrayAccess;
|
|
|
|
/**
|
|
* A generic implementation of the ArrayAccess interface.
|
|
*
|
|
* @author Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
|
|
* @package Basics\InterfaceTraits
|
|
*
|
|
* @api
|
|
*
|
|
* @template TValue of mixed
|
|
* @implements ArrayAccess<array-key, TValue>
|
|
* @phpstan-require-implements ArrayAccess
|
|
*/
|
|
trait ArrayAccessTrait
|
|
{
|
|
/**
|
|
* Holds the array-accessible data.
|
|
*
|
|
* @var array<TValue>
|
|
*/
|
|
protected array $data = [];
|
|
|
|
/**
|
|
* Check if the specified offset exists.
|
|
*
|
|
* @param array-key $offset The offset to check for
|
|
*
|
|
* @return bool Whether the offset exists
|
|
*
|
|
* @internal
|
|
*/
|
|
public function offsetExists(mixed $offset): bool
|
|
{
|
|
return isset($this->data[$offset]);
|
|
}
|
|
|
|
/**
|
|
* Retrieve data at the specified offset.
|
|
*
|
|
* @param array-key $offset The offset to retrieve
|
|
*
|
|
* @return ?TValue The value at the offset or NULL if invalid
|
|
*
|
|
* @internal
|
|
*/
|
|
public function offsetGet(mixed $offset): mixed
|
|
{
|
|
return $this->data[$offset] ?? null;
|
|
}
|
|
|
|
/**
|
|
* Assign a value to the specified offset.
|
|
*
|
|
* @param ?array-key $offset The offset to assign to or NULL to append
|
|
* @param TValue $value The value to set
|
|
*
|
|
* @return void
|
|
*
|
|
* @internal
|
|
*/
|
|
public function offsetSet(mixed $offset, mixed $value): void
|
|
{
|
|
if (is_null($offset)) {
|
|
$this->data[] = $value;
|
|
} else {
|
|
$this->data[$offset] = $value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unset the specified offset.
|
|
*
|
|
* @param array-key $offset The offset to unset
|
|
*
|
|
* @return void
|
|
*
|
|
* @internal
|
|
*/
|
|
public function offsetUnset(mixed $offset): void
|
|
{
|
|
unset($this->data[$offset]);
|
|
}
|
|
}
|