standard/design/Creational/build/build.go

package build

//建造者模式

type Product struct {
	Message string
}

type Product2 struct {
	Message int
}

type Builder interface {
	Part1()
	Part2()
	Part3()
	getProduct() Product
}

type Director struct {
	builder Builder
}

func NewDirector(builder Builder) *Director {
	return &Director{
		builder: builder,
	}
}

type Builder1 struct {
	product Product
}

func (b *Builder1) Part1() {
	b.product.Message += "1"
}

func (b *Builder1) Part2() {
	b.product.Message += "2"
}

func (b *Builder1) Part3() {
	b.product.Message += "3"
}
func (b *Builder1) GetResult() Product {
	return b.product
}

type Builder2 struct {
	product Product2
}

func (b *Builder2) Part1() {
	b.product.Message += 1
}

func (b *Builder2) Part2() {
	b.product.Message += 2
}

func (b *Builder2) Part3() {
	b.product.Message += 3
}

func (b *Builder2) GetResult() Product2 {
	return b.product
}