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package model
import "fmt"
// Index returns node by index from array
func (n *Node) Index(idx int) (*Node, error) {
arrlen := len(n.ArrayValue)
if idx >= arrlen {
return nil, fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
}
return n.ArrayValue[idx], nil
}
// SetIndex sets node to array by index
func (n *Node) SetIndex(idx int, value *Node) error {
arrlen := len(n.ArrayValue)
if idx >= arrlen {
return fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
}
n.ArrayValue[idx] = value
return nil
}
// Each applies callback to each element of array
func (n *Node) Each(cb func(idx int, value *Node) error) error {
for i, v := range n.ArrayValue {
if err := cb(i, v); err != nil {
return err
}
}
return nil
}
// RemoveIndex from array
func (n *Node) RemoveIndex(idx int) error {
arrlen := len(n.ArrayValue)
if idx >= arrlen {
return fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
}
n.ArrayValue = append(n.ArrayValue[:idx], n.ArrayValue[idx:]...)
return nil
}
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