[Unity] Xmlを読み込める汎用ScriptableObject

XmlObject.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Xml;
using System.Linq;

namespace TSKT
{
    public class XmlObject : ScriptableObject
    {
        [System.Serializable]
        public struct Attribute
        {
            public string name;
            public string value;

            public Attribute(XmlAttribute source)
            {
                name = source.Name;
                value = source.Value;
            }
        }

        [System.Serializable]
        public class Node
        {
            public string name;

            [Multiline]
            public string text;

            public Attribute[] attributes;
            public Node[] nodes;

            public Node(XmlNode source)
            {
                name = source.Name;

                if (source.Attributes != null)
                {
                    attributes = source.Attributes
                        .Cast<XmlAttribute>()
                        .Select(_ => new Attribute(_))
                        .ToArray();
                }

                var xmlNodes = source.ChildNodes.Cast<XmlNode>();
                nodes = xmlNodes
                    .Where(_ => _.NodeType != XmlNodeType.XmlDeclaration)
                    .Where(_ => _.NodeType != XmlNodeType.Text)
                    .Select(_ => new Node(_))
                    .ToArray();

                var textNode = xmlNodes.FirstOrDefault(_ => _.NodeType == XmlNodeType.Text);
                if (textNode != null)
                {
                    text = textNode.Value;
                }
            }
        }

        public Node root;

#if UNITY_EDITOR
        [SerializeField]
        TextAsset source;

        public void Build()
        {
            var doc = new XmlDocument();
            doc.LoadXml(source.text);

            root = new Node(doc);
            UnityEditor.EditorUtility.SetDirty(this);
        }
#endif
    }
}

XmlObjectEditor.cs

using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Linq;

namespace TSKT
{
    [CustomEditor(typeof(XmlObject))]
    public class XmlObjectEditor : Editor
    {
        public override void OnInspectorGUI()
        {
            if (GUILayout.Button("Build"))
            {
                var data = target as XmlObject;
                data.Build();
            }
            DrawDefaultInspector();
        }
    }
}