Currency.java

package jetbrains.mps.baseLanguage.money.runtime;

/*Generated by MPS */

import java.math.BigDecimal;

public class Currency {
  private String myCurrency;
  private BigDecimal myAmount;
  public Currency(String amount, String currency) {
    this(new BigDecimal(amount), currency);
  }
  public Currency(BigDecimal amount, String currency) {
    myCurrency = currency;
    this.myAmount = amount;
  }
  public String getCurrency() {
    return myCurrency;
  }
  public String getAmount() {
    return myAmount.toString();
  }
  protected void checkCurrencyCompability(Currency c) throws NotCompatibleCurrencies {
    if (!(myCurrency.equals(c.myCurrency))) {
      throw new NotCompatibleCurrencies();
    }
  }
  public Currency add(Currency c) throws NotCompatibleCurrencies {
    checkCurrencyCompability(c);
    return new Currency(myAmount.add(c.myAmount), myCurrency);
  }
  public Currency sub(Currency c) throws NotCompatibleCurrencies {
    checkCurrencyCompability(c);
    return new Currency(myAmount.add(c.myAmount.negate()), myCurrency);
  }
  public Currency mul(int n) {
    return new Currency(this.myAmount.multiply(new BigDecimal(n)), myCurrency);
  }
  public Currency div(int n) {
    return new Currency(this.myAmount.divide(new BigDecimal(n)), myCurrency);
  }
  public int compareTo(Currency c) throws NotCompatibleCurrencies {
    checkCurrencyCompability(c);
    return myAmount.compareTo(c.myAmount);
  }
  @Override
  public String toString() {
    return myAmount + myCurrency;
  }
  public boolean isZero() {
    return myAmount.compareTo(new BigDecimal("0.00")) == 0;
  }
  @Override
  public boolean equals(Object o) {
    if (!((o instanceof Currency))) {
      return false;
    } else {
      Currency c = (Currency) o;
      if ((myCurrency.equals(c.myCurrency)) && (myAmount.equals(c.myAmount))) {
        return true;
      } else {
        return false;
      }
    }
  }
  @Override
  public int hashCode() {
    return myAmount.hashCode() * 283 + myCurrency.hashCode();
  }
}