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<?php |
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declare(strict_types=1); |
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namespace loophp\collection\Operation; |
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use ArrayAccess; |
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use Closure; |
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use Generator; |
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use loophp\collection\Contract\Collection; |
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use ReflectionClass; |
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use function array_key_exists; |
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use function in_array; |
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use function is_array; |
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use function is_object; |
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use function is_scalar; |
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/** |
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* @immutable |
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* |
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* @template TKey |
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* @template T |
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*/ |
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final class Pluck extends AbstractOperation |
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{ |
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/** |
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* @return Closure(T):Closure(T):Closure(iterable<TKey, T>):Generator<int, T|iterable<int, T>, mixed, void> |
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*/ |
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public function __invoke(): Closure |
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{ |
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return |
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/** |
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* @param T $key |
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* |
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* @return Closure(T): Closure(iterable<TKey, T>): Generator<int, T|iterable<int, T>, mixed, void> |
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*/ |
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static fn (mixed $key): Closure => |
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/** |
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* @param T $default |
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* |
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* @return Closure(iterable<TKey, T>): Generator<int, T|iterable<int, T>, mixed, void> |
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*/ |
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static fn (mixed $default): Closure => |
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/** |
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* @param iterable<TKey, T> $iterable |
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* |
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* @return Generator<int, T|iterable<int, T>, mixed, void> |
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*/ |
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static function (iterable $iterable) use ($key, $default): Generator { |
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$pick = |
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/** |
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* @param iterable<TKey, T> $iterable |
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* @param iterable<TKey, T>|T $target |
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* @param array<int, string> $key |
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* @param T $default |
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* |
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* @return iterable<int, T>|T |
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*/ |
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static function (iterable $iterable, mixed $target, array $key, mixed $default = null) use (&$pick) { |
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while (null !== $segment = array_shift($key)) { |
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if ('*' === $segment) { |
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if (!is_iterable($target)) { |
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return $default; |
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} |
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/** @var array<int, T> $result */ |
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$result = []; |
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foreach ($target as $item) { |
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$result[] = $pick($iterable, $item, $key); |
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} |
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/** @var Generator<TKey, T> $collapse */ |
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$collapse = (new Collapse())()($result); |
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return in_array('*', $key, true) ? $collapse : $result; |
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} |
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if (is_array($target) && array_key_exists($segment, $target)) { |
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/** @var T $target */ |
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$target = $target[$segment]; |
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} elseif (($target instanceof ArrayAccess) && ($target->offsetExists($segment))) { |
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/** @var T $target */ |
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$target = $target[$segment]; |
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} elseif ($target instanceof Collection) { |
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/** @var T $target */ |
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$target = ((new Get())()($segment)($default)($target))->current(); |
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} elseif (is_object($target) && property_exists($target, $segment)) { |
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/** @var T $target */ |
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$target = (new ReflectionClass($target))->getProperty($segment)->getValue($target); |
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} else { |
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$target = $default; |
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} |
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} |
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return $target; |
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}; |
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$key = is_scalar($key) ? explode('.', trim((string) $key, '.')) : $key; |
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foreach ($iterable as $value) { |
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yield $pick($iterable, $value, $key, $default); |
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} |
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}; |
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} |
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} |
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loophp /
collection
