Go设计模式之原型模式讲解和代码示例

package main
type Inode interface {
	printer(string)
	clone() Inode
}

package main
import "fmt"
type File struct {
	name string
}
func (f *File) print(indentation string) {
	fmt.Println(indentation + f.name)
}
func (f *File) clone() Inode {
	return &File{name: f.name + "_clone"}
}

package main
import "fmt"
type Folder struct {
	children []Inode
	name     string
}
func (f *Folder) print(indentation string) {
	fmt.Println(indentation + f.name)
	for _, v := range f.children {
		v.print(indentation + indentation)
	}
}
func (f *Folder) clone() Inode {
	cloneFolder := &Folder{name: f.name + "_clone"}
	var tempChildren []Inode
	for _, v := range f.children {
		copy := v.clone()
		tempChildren = append(tempChildren, copy)
	}
	cloneFolder.children = tempChildren
	return cloneFolder
}

package main
import "fmt"
func main() {
	file1 := &File{name: "file1"}
	file2 := &File{name: "file2"}
	file3 := &File{name: "file3"}
	folder1 := &Folder{
		children: []Inode{file1},
		name:     "folder1",
	}
	folder2 := &Folder{
		children: []Inode{folder1, file2, file3},
		name:     "folder2",
	}
	fmt.Println("Print hierarchy for folder2")
	folder2.print(" ")
	cloneFolder := folder2.clone()
	fmt.Println("\nPrinting hierarchy for clone Folder")
	cloneFolder.print("  ")
}