I created an Element struct that has a parent and children, created a helper func called SubElement, and a String method that iterates through all children for print:
package main
import "fmt"
type Element struct {
parent *Element
children []Element
tag string
}
func SubElement(parent *Element, tag string) Element {
el := Element{}
el.parent = parent
el.tag = tag
parent.children = append(parent.children, el)
return el
}
func (el Element) String() string {
s := "<" + el.tag + ">"
for _, child := range el.children {
s += child.String()
}
s += "</" + el.tag + ">"
return s
}
func main() {
root := Element{}
root.tag = "root"
a := SubElement(&root, "a")
b := SubElement(&a, "b")
SubElement(&b, "c")
fmt.Println(root) // prints: <root><a></a></root>
fmt.Println(a) // prints: <a><b></b></a>
// and so on
}
The problem I'm experiencing is, only the first tier of children are available from the root node I choose to print. I'm sure it's related to the use of append on parent.children, but lack the understanding of how to resolve this correctly.
To work around the issue, I changed children to map[int]Element. Then in my SubElement func, I "append" with parent.children[len(parent.children)] = el. Then to iterate in the correct order, the String method for-loop is for i:= 0; i < len(el.children); i++, accessing el.children[i].
Still, I'd like to know how to do this correctly with an array. Thanks
