Viewing file:  CurrencyList.php (1.37 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace Money\Currencies;
use ArrayIterator;
use Money\Currencies;
use Money\Currency;
use Money\Exception\UnknownCurrencyException;
use Traversable;
use function array_keys;
use function array_map;
/**
* A list of custom currencies.
*/
final class CurrencyList implements Currencies
{
/**
* Map of currencies and their sub-units indexed by code.
*
* @psalm-var array<non-empty-string, int>
*/
private array $currencies;
/** @psalm-param array<non-empty-string, positive-int|0> $currencies */
public function __construct(array $currencies)
{
$this->currencies = $currencies;
}
public function contains(Currency $currency): bool
{
return isset($this->currencies[$currency->getCode()]);
}
public function subunitFor(Currency $currency): int
{
if (! $this->contains($currency)) {
throw new UnknownCurrencyException('Cannot find currency ' . $currency->getCode());
}
return $this->currencies[$currency->getCode()];
}
/** {@inheritDoc} */
public function getIterator(): Traversable
{
return new ArrayIterator(
array_map(
static function ($code) {
return new Currency($code);
},
array_keys($this->currencies)
)
);
}
}
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