// computer.beh -- behavior definition for Computer example

Computer {
  traversal allEquip(InventoryVisitor inv, PricingVisitor price) {
    to Equipment;
  }
}

PricingVisitor {
  before Equipment (@ total = total.add(host.get_netPrice()); @)
  before CompositeEquipment (@ total = total.add(host.get_discountPrice()); @)
}

Currency {
(@
  // a constructor to make things a little easier...
  public Currency(int d) {
    dollars = new Integer(d);
  }
  public Currency add(Currency c) {
    return new Currency(this.get_dollars().intValue()
			+ c.get_dollars().intValue());
  }
@)
}

InventoryVisitor {
  before Equipment (@ inventory.accumulate(host); @)
}

Inventory {
(@
  public void accumulate(Equipment eq) {
    this.get_equipment().append(eq);
  }
@)
}

Equipment_List {
(@
  public void append(Equipment eq) {
    Nonempty_Equipment_List neweq = new Nonempty_Equipment_List(eq, null);
    if (this.get_first() == null) {
      this.set_first(neweq);
    } else {
      Nonempty_Equipment_List e = this.get_first();
      while (e.get_next() != null) e = e.get_next();
      e.set_next(neweq);
    }
  }
@)
}

Main {
(@
  static public void main(String args[]) throws Exception {
    Computer comp = Computer.parse(System.in);

    InventoryVisitor inv =
      new InventoryVisitor(new Inventory(new Equipment_List(null)));
    PricingVisitor price = new PricingVisitor(new Currency(0));

/*
    InventoryVisitor inv = InventoryVisitor.parse("");
    PricingVisitor price = PricingVisitor.parse("$ 0");
*/

    comp.allEquip(inv, price);

    // Normally this would be done with g_print...
    System.out.println("Inventory:");
    for (Nonempty_Equipment_List inventory =
	   inv.get_inventory().get_equipment().get_first();
	 inventory != null;
	 inventory = inventory.get_next()) {
      System.out.println("    " + inventory.get_it());
    }
    System.out.println("Price " + price.get_total().get_dollars());
  }
@)
}