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<?php |
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|
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/** |
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* This file is part of the Nette Framework (https://nette.org) |
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* Copyright (c) 2004 David Grudl (https://davidgrudl.com) |
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*/ |
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declare (strict_types=1); |
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namespace Packetery\Nette\Utils; |
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|
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use Packetery\Nette; |
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/** |
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* Provides the base class for a generic list (items can be accessed by index). |
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*/ |
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class ArrayList implements \ArrayAccess, \Countable, \IteratorAggregate |
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{ |
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use \Packetery\Nette\SmartObject; |
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/** @var mixed[] */ |
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private $list = []; |
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/** |
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* Returns an iterator over all items. |
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*/ |
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public function getIterator() : \ArrayIterator |
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{ |
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return new \ArrayIterator($this->list); |
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} |
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/** |
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* Returns items count. |
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*/ |
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public function count() : int |
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{ |
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return \count($this->list); |
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} |
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/** |
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* Replaces or appends a item. |
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* @param int|null $index |
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* @param mixed $value |
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* @throws \Packetery\Nette\OutOfRangeException |
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*/ |
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public function offsetSet($index, $value) : void |
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{ |
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if ($index === null) { |
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$this->list[] = $value; |
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} elseif (!\is_int($index) || $index < 0 || $index >= \count($this->list)) { |
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throw new \Packetery\Nette\OutOfRangeException('Offset invalid or out of range'); |
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} else { |
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$this->list[$index] = $value; |
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} |
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} |
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/** |
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* Returns a item. |
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* @param int $index |
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* @return mixed |
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* @throws \Packetery\Nette\OutOfRangeException |
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*/ |
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public function offsetGet($index) |
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{ |
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if (!\is_int($index) || $index < 0 || $index >= \count($this->list)) { |
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throw new \Packetery\Nette\OutOfRangeException('Offset invalid or out of range'); |
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} |
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return $this->list[$index]; |
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} |
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/** |
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* Determines whether a item exists. |
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* @param int $index |
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*/ |
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public function offsetExists($index) : bool |
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{ |
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return \is_int($index) && $index >= 0 && $index < \count($this->list); |
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} |
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/** |
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* Removes the element at the specified position in this list. |
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* @param int $index |
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* @throws \Packetery\Nette\OutOfRangeException |
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*/ |
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public function offsetUnset($index) : void |
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{ |
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if (!\is_int($index) || $index < 0 || $index >= \count($this->list)) { |
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throw new \Packetery\Nette\OutOfRangeException('Offset invalid or out of range'); |
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} |
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\array_splice($this->list, $index, 1); |
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} |
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/** |
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* Prepends a item. |
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* @param mixed $value |
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*/ |
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public function prepend($value) : void |
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{ |
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$first = \array_slice($this->list, 0, 1); |
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$this->offsetSet(0, $value); |
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\array_splice($this->list, 1, 0, $first); |
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} |
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} |
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|
