go中的深度拷贝gob版

3.通过gob的序列化和反序列化进行深度拷贝

package main

import (
	"bytes"
	"encoding/gob"
	"fmt"
	"reflect"
)

type (
	Player struct {
		Id     int
		Level  int
		Heroes map[int]*Hero
		Equips []*Equip
	}

	Hero struct {
		Id     int
		Level  int
		Skills []*Skill
	}

	Equip struct {
		Id    int
		Level int
	}

	Skill struct {
		Id    int
		Level int
	}
)

func NewHero() *Hero {
	return &Hero{
		Id:     1,
		Level:  1,
		Skills: append([]*Skill{NewSkill()}, NewSkill(), NewSkill()),
	}
}

func NewSkill() *Skill {
	return &Skill{1, 1}
}

func NewEquip() *Equip {
	return &Equip{1, 1}
}

func NewPlayer() *Player {
	return &Player{
		Id:     1,
		Level:  1,
		Heroes: map[int]*Hero{1: NewHero(), 2: NewHero(), 3: NewHero()},
		Equips: append([]*Equip{NewEquip()}, NewEquip(), NewEquip()),
	}
}

func (self *Hero) Print() {
	fmt.Printf("Id=%d, Level=%d\n", self.Id, self.Level)
	for _, v := range self.Skills {
		fmt.Printf("%v\n", *v)
	}
}

func (self *Player) Print() {
	fmt.Printf("Id=%d, Level=%d\n", self.Id, self.Level)
	for _, v := range self.Heroes {
		v.Print()
	}

	for _, v := range self.Equips {
		fmt.Printf("%+v\n", *v)
	}
}

func GobDeepCopy(dst, src interface{}) error {
	var buf bytes.Buffer
	if err := gob.NewEncoder(&buf).Encode(src); err != nil {
		return err
	}
	return gob.NewDecoder(bytes.NewBuffer(buf.Bytes())).Decode(dst)
}

func main() {
	p1 := NewPlayer()
	p2 := new(Player)
	GobDeepCopy(p2, p1)
	fmt.Println(reflect.DeepEqual(p1, p2))
}

output:
	true
func BenchmarkGob(b *testing.B) {
	p1 := NewPlayer()
	p2 := new(Player)
	for i:=0 ; i<b.N ; i++ {
		GobDeepCopy(p2, p1)
	}
}
goos: windows
goarch: amd64
pkg: game.lab/go-deepcopy/src/gob
30000	     57666 ns/op
PASS