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<?php
namespace MaxGoryunov\SavingIterator\Src;
use Iterator;
/**
* Iterator which stores iterated values.
* @template TKey
* @template TValue
* @extends IteratorEnvelope<TKey, TValue>
*/
final class SavingIterator extends IteratorEnvelope
{
* Ctor.
*
* @phpstan-param Iterator<TKey, TValue> $origin
* @phpstan-param AddingIterator<TKey, TValue> $target
* @param Iterator $origin original iterator.
* @param AddingIterator $target iterator to which the values are saved.
public function __construct(
Iterator $origin,
AddingIterator $target
) {
parent::__construct(
/** @phpstan-ignore-next-line */
new ContextVeil(
$target,
new ClosureReaction(
function (AddingIterator $stored) use ($origin) {
$res = $stored;
if ($origin->valid()) {
$res = $stored->from($origin);
$origin->next();
}
return $res;
)
);
MaxGoryunov /
saving-iterator
