Viewing file:  ReversedCurrenciesExchange.php (1.22 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace Money\Exchange;
use Money\Currency;
use Money\CurrencyPair;
use Money\Exception\UnresolvableCurrencyPairException;
use Money\Exchange;
use Money\Money;
/**
* Tries the reverse of the currency pair if one is not available.
*
* Note: adding nested ReversedCurrenciesExchange could cause a huge performance hit.
*/
final class ReversedCurrenciesExchange implements Exchange
{
public function __construct(private readonly Exchange $exchange)
{
}
public function quote(Currency $baseCurrency, Currency $counterCurrency): CurrencyPair
{
try {
return $this->exchange->quote($baseCurrency, $counterCurrency);
} catch (UnresolvableCurrencyPairException $exception) {
$calculator = Money::getCalculator();
try {
$currencyPair = $this->exchange->quote($counterCurrency, $baseCurrency);
return new CurrencyPair(
$baseCurrency,
$counterCurrency,
$calculator::divide('1', $currencyPair->getConversionRatio())
);
} catch (UnresolvableCurrencyPairException) {
throw $exception;
}
}
}
}
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