Viewing file:  ReversedCurrenciesExchange.php (1.28 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?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
{
private Exchange $exchange;
public function __construct(Exchange $exchange)
{
$this->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;
}
}
}
}
|