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<?php |
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/** |
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* This file is part of the sj-i/typed-cdata package. |
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* |
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* (c) sji <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace TypedCData; |
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use FFI\CData; |
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/** |
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* @template T of TypedCDataInterface |
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*/ |
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class TypedCDataArray implements \ArrayAccess |
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{ |
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/** @var \FFI\CDataArray */ |
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private CData $cdata; |
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/** @var class-string<T> $typed_cdata_class */ |
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private string $typed_cdata_class; |
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/** @var array<int, T> */ |
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private array $typed_element_cache; |
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/** |
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* TypedCDataArray constructor. |
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* @param \FFI\CDataArray $cdata |
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* @param class-string<T> $typed_cdata_class |
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*/ |
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public function __construct(CData $cdata, string $typed_cdata_class) |
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{ |
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$this->cdata = $cdata; |
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$this->typed_cdata_class = $typed_cdata_class; |
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$this->typed_element_cache = []; |
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} |
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public function offsetExists($offset) |
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{ |
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return true; |
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} |
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/** |
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* @param int $offset |
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*/ |
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public function offsetGet($offset): TypedCDataInterface |
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{ |
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if (!isset($this->typed_element_cache[$offset])) { |
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$this->typed_element_cache[$offset] = $this->typed_cdata_class::fromCData($this->cdata[$offset]); |
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} |
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return $this->typed_element_cache[$offset]; |
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} |
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/** |
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* @param int $offset |
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* @param TypedCDataInterface $value |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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$value->toCData($this->cdata[$offset]); |
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} |
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public function offsetUnset($offset) |
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{ |
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} |
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/** |
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* @template T2 of TypedCDataInterface |
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* @param \FFI\CDataArray $cdata |
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* @param class-string<T2> $typed_cdata_class |
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* @return self<T2> |
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*/ |
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public static function fromCData(CData $cdata, string $typed_cdata_class): TypedCDataArray |
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{ |
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return new self($cdata, $typed_cdata_class); |
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} |
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public function toCData(?CData $cdata): CData |
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{ |
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foreach ($this->typed_element_cache as $offset => $item) { |
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assert($item instanceof TypedCDataInterface); |
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$item->toCData($this->cdata[$offset]); |
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} |
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return $this->cdata; |
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} |
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} |
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sj-i /
typed-cdata
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