结构体之间的转换

将DBDiskGroupInfo 转换为DiskGroupInfo 还有跟快的吗？？？

package main

import (
    "fmt"
    "unsafe"
)

type DBDiskGroupInfo struct {
    ZoneID  int32   `bson:"ZoneID"`
    GroupID int32   `bson:"GroupID"`
    Status  int32   `bson:"Status"`
    Dids    []int32 `bson:"DidList"`
}
type DiskGroupInfo struct {
    ZoneID  uint32   `bson:"ZoneID"`
    GroupID uint32   `bson:"GroupID"`
    Status  uint32   `bson:"Status"`
    Dids    []uint32 `bson:"DidList"`
}

func (x *DBDiskGroupInfo) test3() (tmp DiskGroupInfo) {
    tmp.ZoneID = uint32(x.ZoneID)
    tmp.GroupID = uint32(x.GroupID)
    tmp.Status = uint32(x.Status)
    y := (*[]uint32)(unsafe.Pointer(&x.Dids))
    tmp.Dids = make([]uint32, len(x.Dids))
    copy(tmp.Dids, *y)
    return tmp
}
func main() {
    var x DBDiskGroupInfo
    x.ZoneID = 1
    x.GroupID = 2
    x.Status = 3
    x.Dids = make([]int32, 0)
    x.Dids = append(x.Dids, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 3, 4)

    y := x.test3()
    fmt.Println(y)
}