patterns/decorator/coffee/soy.d

module decorator.coffee.soy;

import decorator.coffee.beverage;
import decorator.coffee.condimentdecorator;

class Soy : CondimerDecorator
{
private:
    Beverage beverage;
public:
    this(Beverage beverage)
    {
        this.beverage = beverage;
    }

    override string getDescription()
    {
        return beverage.getDescription() ~ ", Soy";
    }

    override double cost()
    {
        return .15 + beverage.cost();
    }
}