Golang模板方法模式定义算法结构

package main

// 定义算法步骤的接口
type Beverage interface {
  BoilWater()
  Brew()
  PourInCup()
  AddCondiments()
}

// 模板方法结构体
type BeverageMaker struct {
  beverage Beverage
}

// 模板方法：定义算法骨架
func (b *BeverageMaker) MakeBeverage() {
  b.beverage.BoilWater()
  b.beverage.Brew()
  b.beverage.PourInCup()
  b.beverage.AddCondiments()
}

// 咖啡实现
type Coffee struct{}

func (c *Coffee) BoilWater()         { println("将水煮沸") }
func (c *Coffee) Brew()              { println("冲泡咖啡") }
func (c *Coffee) PourInCup()         { println("倒入咖啡杯") }
func (c *Coffee) AddCondiments()     { println("加入糖和牛奶") }

// 茶实现
type Tea struct{}

func (t *Tea) BoilWater()            { println("将水煮沸") }
func (t *Tea) Brew()                 { println("冲泡茶叶") }
func (t *Tea) PourInCup()            { println("倒入茶杯") }
func (t *Tea) AddCondiments()        { println("加入柠檬") }

// 使用示例
func main() {
  coffee := &Coffee{}
  tea := &Tea{}

  coffeeMaker := &BeverageMaker{beverage: coffee}
  teaMaker := &BeverageMaker{beverage: tea}

  println("制作咖啡：")
  coffeeMaker.MakeBeverage()

  println("\n制作茶：")
  teaMaker.MakeBeverage()
}