Meta data for objects

model/node.go

@@ -9,6 +9,9 @@ type Node interface {
 
 // NewNode creates new node from value
 func NewNode(value any) Node {
+	if value, ok := value.(Node); ok {
+		return value
+	}
 	switch value := value.(type) {
 	case string:
 		return &StringNode{
@@ -25,6 +28,7 @@ func NewNode(value any) Node {
 	case NodeObjectValue:
 		return &ObjectNode{
 			Value: value,
+			Meta:  make(map[string]any),
 		}
 	case NodeArrayValue:
 		return &ArrayNode{

model/objectNode.go

@@ -7,6 +7,7 @@ import (
 
 type ObjectNode struct {
 	Value NodeObjectValue
+	Meta  map[string]any
 }
 
 func (n ObjectNode) Type() NodeType {
@@ -56,3 +57,7 @@ func (n *ObjectNode) Set(v any) error {
 	n.Value = val
 	return nil
 }
+
+func (n *ObjectNode) Remove(key string) {
+	delete(n.Value, key)
+}

model/types.go

@@ -13,6 +13,7 @@ const (
 
 type NodeObjectValue map[string]Node
 
-func (n NodeObjectValue) Set(k string, v any) {
+func (n NodeObjectValue) Set(k string, v any) error {
 	n[k] = NewNode(v)
+	return nil
 }