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<?php |
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/** |
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* Part of the Fusion.Collection package. |
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* |
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* @license MIT |
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*/ |
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declare(strict_types=1); |
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namespace Fusion\Collection; |
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use Fusion\Collection\Contracts\AbstractCollection; |
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use Fusion\Collection\Contracts\CollectionInterface; |
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use Fusion\Collection\Contracts\CollectionValidationInterface; |
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use Fusion\Collection\Exceptions\CollectionException; |
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/** |
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* An implementation of a collection. |
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* |
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* A collection holds values internally with a numeric index. The values can consist of any value |
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* that can be stored in a PHP array that isn't `null`. The internal index grows and shrink with |
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* the collection as items are removed or added. |
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* |
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* Collections are traversable and can be looped or accessed directly using array index notation. |
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* |
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* @since 1.0.0 |
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*/ |
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class Collection extends AbstractCollection implements CollectionInterface |
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{ |
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/** |
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* Instantiates a collection object with an optional array of starter items. |
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* |
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* If the starting items contain any `null` values, an exception will be thrown. |
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* |
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* @param CollectionValidationInterface $validator |
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* @param array $items |
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* |
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* @throws CollectionException |
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*/ |
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public function __construct(CollectionValidationInterface $validator, array $items = []) |
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{ |
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$this->validator = $validator; |
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foreach ($items as $item) { |
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$this->add($item); |
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} |
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} |
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/** {@inheritdoc} */ |
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public function add($value): CollectionInterface |
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{ |
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$this->validator->validateNonNullValue($value); |
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array_push($this->collection, $value); |
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return $this; |
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} |
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/** {@inheritdoc} */ |
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public function replace(int $key, $value): CollectionInterface |
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{ |
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$this->offsetSet($key, $value); |
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return $this; |
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} |
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/** {@inheritdoc} */ |
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public function find(int $key) |
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{ |
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$this->validator->validateOffsetExists($key, $this); |
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return $this->offsetGet($key); |
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} |
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/** |
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* Retrieves a value at the given offset. |
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* |
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* This method will throw a `CollectionException` if the offset is not an integer or if the |
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* offset does not exist. |
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* |
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* @param mixed $offset |
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* |
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* @return mixed |
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* |
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* @throws CollectionException |
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* @link http://php.net/manual/en/arrayaccess.offsetget.php |
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* |
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* @see \Fusion\Collection\Contracts\AbstractCollection::offsetGet() |
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*/ |
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public function offsetGet($offset) |
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{ |
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$this->validator->validateIntValue($offset); |
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$this->validator->validateOffsetExists($offset, $this); |
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return parent::offsetGet($offset); |
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} |
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/** |
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* Sets a value at the given offset. |
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* |
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* This method will throw a `CollectionException` if the offset does not exist or if the offset |
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* is not an integer. |
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* |
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* @param mixed $offset |
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* @param mixed $value |
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* |
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* @return void |
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* |
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* @throws CollectionException |
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* @see \Fusion\Collection\Contracts\AbstractCollection::offsetSet() |
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* @link http://php.net/manual/en/arrayaccess.offsetset.php |
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* |
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*/ |
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public function offsetSet($offset, $value): void |
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{ |
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$this->validator->validateIntValue($offset); |
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$this->validator->validateOffsetExists($offset, $this); |
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parent::offsetSet($offset, $value); |
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} |
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} |
FusionPHP /
collection
