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<?php |
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declare(strict_types=1); |
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namespace Smoren\Sequence\Structs; |
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use Smoren\Sequence\Exceptions\OutOfRangeException; |
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use Smoren\Sequence\Interfaces\IndexedArrayInterface; |
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use Smoren\Sequence\Iterators\IndexedArrayIterator; |
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/** |
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* Implementation of Indexed Array. |
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* |
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* @template T |
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* @implements IndexedArrayInterface<T> |
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*/ |
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class IndexedArray implements IndexedArrayInterface |
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{ |
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/** |
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* @var array<T> data storage |
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*/ |
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protected array $source; |
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/** |
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* IndexedArray constructor. |
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* |
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* @param array<T> $source default data storage |
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*/ |
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public function __construct(array $source = []) |
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{ |
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$this->source = array_values($source); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getRange(): Range |
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{ |
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return new Range(0, count($this->source), 1); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getIterator(): IndexedArrayIterator |
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{ |
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return new IndexedArrayIterator($this); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function offsetExists($offset): bool |
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{ |
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return $this->getRange()->offsetExists($offset); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function offsetGet($offset) |
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{ |
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$index = $this->getRange()->offsetGet($offset); |
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return $this->source[$index]; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function offsetSet($offset, $value): void |
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{ |
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if ($offset === null) { |
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$this->source[] = $value; |
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} else { |
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$range = $this->getRange(); |
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if (isset($range[$offset])) { |
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$index = $range[$offset]; |
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$this->source[$index] = $value; |
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} else { |
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throw new OutOfRangeException(); |
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} |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function offsetUnset($offset): void |
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{ |
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$range = $this->getRange(); |
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if (isset($range[$offset])) { |
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$index = $range[$offset]; |
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unset($this->source[$index]); |
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$this->source = array_values($this->source); |
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} else { |
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throw new OutOfRangeException(); |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function count(): int |
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{ |
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return count($this->source); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function toArray(): array |
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{ |
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return $this->source; |
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} |
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} |
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Smoren /
sequence-php
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