ExchangerExchange.php
1 year ago
FixedExchange.php
1 year ago
IndirectExchange.php
1 year ago
ReversedCurrenciesExchange.php
1 year ago
SwapExchange.php
1 year ago
ReversedCurrenciesExchange.php
47 lines
| 1 | <?php |
| 2 | |
| 3 | namespace Money\Exchange; |
| 4 | |
| 5 | use Money\Currency; |
| 6 | use Money\CurrencyPair; |
| 7 | use Money\Exception\UnresolvableCurrencyPairException; |
| 8 | use Money\Exchange; |
| 9 | |
| 10 | /** |
| 11 | * Tries the reverse of the currency pair if one is not available. |
| 12 | * |
| 13 | * Note: adding nested ReversedCurrenciesExchange could cause a huge performance hit. |
| 14 | * |
| 15 | * @author Márk Sági-Kazár <mark.sagikazar@gmail.com> |
| 16 | */ |
| 17 | final class ReversedCurrenciesExchange implements Exchange |
| 18 | { |
| 19 | /** |
| 20 | * @var Exchange |
| 21 | */ |
| 22 | private $exchange; |
| 23 | |
| 24 | public function __construct(Exchange $exchange) |
| 25 | { |
| 26 | $this->exchange = $exchange; |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * {@inheritdoc} |
| 31 | */ |
| 32 | public function quote(Currency $baseCurrency, Currency $counterCurrency) |
| 33 | { |
| 34 | try { |
| 35 | return $this->exchange->quote($baseCurrency, $counterCurrency); |
| 36 | } catch (UnresolvableCurrencyPairException $exception) { |
| 37 | try { |
| 38 | $currencyPair = $this->exchange->quote($counterCurrency, $baseCurrency); |
| 39 | |
| 40 | return new CurrencyPair($baseCurrency, $counterCurrency, 1 / $currencyPair->getConversionRatio()); |
| 41 | } catch (UnresolvableCurrencyPairException $inversedException) { |
| 42 | throw $exception; |
| 43 | } |
| 44 | } |
| 45 | } |
| 46 | } |
| 47 |