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<?php |
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declare(strict_types=1); |
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namespace DanBettles\Gestalt; |
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use Closure; |
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use InvalidArgumentException; |
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use function array_flip; |
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use function array_intersect_key; |
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use function array_key_exists; |
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use function array_replace; |
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use function is_array; |
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use function is_object; |
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use function ksort; |
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use const false; |
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/** |
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* A simple array class. Instances are mutable (i.e. methods change the state of the object). |
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*/ |
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class ArrayObject |
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{ |
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/** @var array */ |
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private $elements; |
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public function __construct(array $elements = []) |
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{ |
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$this->setElements($elements); |
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} |
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/** |
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* Appends an element with the specified value. |
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* |
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* @param mixed $value |
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*/ |
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public function append($value): self |
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{ |
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$this->elements[] = $value; |
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return $this; |
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} |
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/** |
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* Adds or updates an element. |
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* |
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* @param mixed $key |
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* @param mixed $value |
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*/ |
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public function set($key, $value): self |
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{ |
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$this->elements[$key] = $value; |
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return $this; |
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} |
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private function setElements(array $elements): self |
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{ |
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$this->elements = $elements; |
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return $this; |
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} |
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public function getElements(): array |
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{ |
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return $this->elements; |
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} |
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/** |
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* When no arguments are passed, behaves the same as [ksort()](https://www.php.net/manual/en/function.ksort.php). |
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* Otherwise, the elements can be put in the order specified in `$order`; this applies to arrays with numeric or |
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* non-numeric keys. |
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*/ |
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public function sortByKey(array $order = []): self |
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{ |
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if (empty($order)) { |
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$sorted = $this->getElements(); |
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ksort($sorted); |
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return $this->setElements($sorted); |
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} |
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$elements = $this->getElements(); |
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$base = array_intersect_key(array_flip($order), $elements); |
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$sorted = array_replace($base, $elements); |
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return $this->setElements($sorted); |
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} |
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/** |
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* Executes the callback for each of the elements. The callback is passed the key and the value of the current |
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* element, in that order. `each()` will stop iterating if the callback returns exactly `false`. |
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*/ |
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public function each(Closure $callback): void |
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{ |
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foreach ($this->getElements() as $key => $value) { |
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if (false === $callback($key, $value)) { |
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return; |
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} |
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} |
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} |
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/** |
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* Reindexes the elements, which must be array/object records, using the values in the column with the specified key. |
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* |
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* @throws InvalidArgumentException If an element is not a record. |
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* @throws InvalidArgumentException If a record does not contain a field with the specified name. |
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*/ |
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public function reindexByColumn(string $columnKey): self |
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{ |
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$reindexed = []; |
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foreach ($this->getElements() as $key => $element) { |
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if (!is_array($element) && !is_object($element)) { |
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throw new InvalidArgumentException("The element at index `{$key}` is not a record."); |
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} |
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$normalizedRecord = (array) $element; |
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if (!array_key_exists($columnKey, $normalizedRecord)) { |
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throw new InvalidArgumentException("The record at index `{$key}` does not contain the field `{$columnKey}`."); |
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} |
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$newKey = $normalizedRecord[$columnKey]; |
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$reindexed[$newKey] = $element; |
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} |
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return $this->setElements($reindexed); |
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} |
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} |
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