/**
* {@inheritdoc}
*/
public function getExchangeRate($sourceCurrencyCode, $targetCurrencyCode)
{
if (isset($this->exchangeRates[$sourceCurrencyCode][$targetCurrencyCode])) {
return $this->exchangeRates[$sourceCurrencyCode][$targetCurrencyCode];
}
$exchangeRate = $this->provider->getExchangeRate($sourceCurrencyCode, $targetCurrencyCode);
$this->exchangeRates[$sourceCurrencyCode][$targetCurrencyCode] = $exchangeRate;
return $exchangeRate;
}
/**
* @param Money $money
* @param Currency $currency
*
* @return Money
*
* @throws CurrencyConversionException If the exchange rate is not available.
* @throws RoundingNecessaryException If rounding was necessary but this converter uses RoundingMode::UNNECESSARY.
*/
public function convert(Money $money, Currency $currency)
{
if ($money->getCurrency()->is($currency)) {
$exchangeRate = 1;
} else {
$exchangeRate = $this->exchangeRateProvider->getExchangeRate($money->getCurrency()->getCode(), $currency->getCode());
}
return $money->convertedTo($currency, $exchangeRate, $this->context);
}
/**
* {@inheritdoc}
*/
public function getExchangeRate($sourceCurrencyCode, $targetCurrencyCode)
{
if ($sourceCurrencyCode == $this->baseCurrencyCode) {
return $this->provider->getExchangeRate($sourceCurrencyCode, $targetCurrencyCode);
}
if ($targetCurrencyCode == $this->baseCurrencyCode) {
$exchangeRate = $this->provider->getExchangeRate($targetCurrencyCode, $sourceCurrencyCode);
return BigRational::of($exchangeRate)->reciprocal();
}
$baseToSource = $this->provider->getExchangeRate($this->baseCurrencyCode, $sourceCurrencyCode);
$baseToTarget = $this->provider->getExchangeRate($this->baseCurrencyCode, $targetCurrencyCode);
return BigRational::of($baseToTarget)->dividedBy($baseToSource);
}
/**
* Compares the given monies.
*
* The amount is not rounded before comparison, so the results are more relevant than when using
* `convert($a, $b->getCurrency())->compareTo($b)`.
*
* Note that the comparison is performed by converting A into B's currency.
* This order is important if the exchange rate provider uses different exchange rates
* when converting back and forth two currencies.
*
* @param Money $a
* @param Money $b
*
* @return int -1, 0 or 1.
*
* @throws CurrencyConversionException If the exchange rate is not available.
*/
public function compare(Money $a, Money $b)
{
$aCurrencyCode = $a->getCurrency()->getCode();
$bCurrencyCode = $b->getCurrency()->getCode();
if ($aCurrencyCode === $bCurrencyCode) {
return $a->compareTo($b);
}
$aAmount = $a->getAmount();
$bAmount = $b->getAmount();
$exchangeRate = $this->exchangeRateProvider->getExchangeRate($aCurrencyCode, $bCurrencyCode);
$aAmount = $aAmount->toBigRational()->multipliedBy($exchangeRate);
return $aAmount->compareTo($bAmount);
}
