데코레이터 패턴(Decorator Pattern)

  abstract class IceCreame{
      public abstract getTaste():void;
  }


  class Vanilla extends IceCreame{
      public getTaste():void {
          console.log('바닐라 아이스크림');
      }
  }


  abstract class IceCreameDecorator extends IceCreame{

      private iceCreame : IceCreame;

      constructor(ic: IceCreame){
          super();
          this.iceCreame = ic;
      }

      public getTaste():void{
          this.iceCreame.getTaste();
      }
  }


  class ChocoDecorator extends IceCreameDecorator{

      constructor(ic:IceCreame){
          super(ic);
      }

      public getTaste():void{
          super.getTaste();
          this.getChocoTaste();
      }

      public getChocoTaste():void{
         console.log('초코 맛 추가');
      }
  }


  class StrawberryDecorator extends IceCreameDecorator{

      constructor(ic:IceCreame){
          super(ic);
      }

      public getTaste():void{
          super.getTaste();
          this.getChocoTaste();
      }

      public getChocoTaste():void{
         console.log('딸기 맛 추가');
      }
  }


  const strawberry_choco: IceCreame = 
  new StrawberryDecorator(new ChocoDecorator(new Vanilla()));
  strawberry_choco.getTaste();