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<?php
declare(strict_types=1);
namespace Money\Currencies;
use AppendIterator;
use Money\Currencies;
use Money\Currency;
use Money\Exception\UnknownCurrencyException;
use Traversable;
/**
* Aggregates several currency repositories.
*/
final class AggregateCurrencies implements Currencies
{
/** @var Currencies[] */
private array $currencies;
/**
* @param Currencies[] $currencies
*/
public function __construct(array $currencies)
{
$this->currencies = $currencies;
}
public function contains(Currency $currency): bool
{
foreach ($this->currencies as $currencies) {
if ($currencies->contains($currency)) {
return true;
}
}
return false;
}
public function subunitFor(Currency $currency): int
{
foreach ($this->currencies as $currencies) {
if ($currencies->contains($currency)) {
return $currencies->subunitFor($currency);
}
}
throw new UnknownCurrencyException('Cannot find currency ' . $currency->getCode());
}
/** {@inheritDoc} */
public function getIterator(): Traversable
{
/** @psalm-var AppendIterator&Traversable<int|string, Currency> $iterator */
$iterator = new AppendIterator();
foreach ($this->currencies as $currencies) {
$currencyIterator = $currencies->getIterator();
/** @psalm-var AppendIterator&Traversable<int|string, Currency> $currencyIterator */
$iterator->append($currencyIterator);
}
return $iterator;
}
}