BulletMLLib.BulletMLParser.ParseXML C# (CSharp) Method

        public void ParseXML(string xmlFileName)
        {
            //Debug.WriteLine(" ----- " + xmlFileName + " ----- ");
            XmlReaderSettings settings = new XmlReaderSettings();

            settings.DtdProcessing = DtdProcessing.Ignore;

            #if WINDOWS
            settings.ValidationType = ValidationType.DTD;
            #endif

            BulletMLParser parser = new BulletMLParser();

            try
            {
                using (XmlReader reader = XmlReader.Create(xmlFileName, settings))
                {
                    while (reader.Read())
                    {
                        switch (reader.NodeType)
                        {
                            case XmlNodeType.Element: // The node is an element.
                                //Debug.Write("<" + reader.Name + ">\n");

                                BulletMLTree element = new BulletMLTree();
                                element.name = parser.StringToName(reader.Name);
                                if (reader.HasAttributes)
                                {
                                    element.type = parser.StringToType(reader.GetAttribute("type"));
                                    element.label = reader.GetAttribute("label");
            #if ExpandedBulletML
                                element.visible = reader.GetAttribute("visible") == "false" ? false : true;
                                element.bulletName = reader.GetAttribute("name");
            #endif
                                }

                                if (tree == null)
                                    tree = element;
                                else
                                {
                                    tree.children.Add(element);
                                    if (tree.children.Count > 1)
                                        tree.children[tree.children.Count - 2].next = tree.children[tree.children.Count - 1];

                                    element.parent = tree;
                                    if (!reader.IsEmptyElement)
                                        tree = element;
                                }

                                break;

                            case XmlNodeType.Text: //Display the text in each element.

                                //Debug.WriteLine(reader.Value +"\n");

                                string line = reader.Value;
                                string word = "";
                                for (int i = 0; i < line.Length; i++)
                                {
                                    float num;
                                    if (('0' <= line[i] && line[i] <= '9') || line[i] == '.')
                                    {
                                        word = word + line[i];
                                        if (i < line.Length - 1) //まだ続きがあれば
                                            continue;
                                    }

                                    if (word != "")
                                    {
                                        if (float.TryParse(word, out num))
                                        {
                                            tree.values.Add(new BulletValue(BLValueType.Number, num));
                                            word = "";
                                            //Debug.WriteLine("数値を代入" + num);
                                        }
                                        else
                                        {
                                            //Debug.WriteLine("構文にエラーがあります : " + line[i]);
                                        }
                                    }

                                    if (line[i] == '$')
                                    {
                                        if (line[i + 1] >= '0' && line[i + 1] <= '9')
                                        {
                                            tree.values.Add(new BulletValue(BLValueType.Param, Convert.ToInt32(line[i + 1].ToString())));
                                            i++;
                                            //Debug.WriteLine("パラメータを代入");
                                        }
                                        else if (line.Substring(i, 5) == "$rank")
                                        {
                                            //Debug.WriteLine("ランクを代入");
                                            i += 4;
                                            tree.values.Add(new BulletValue(BLValueType.Rank, 0));
                                        }
                                        else if (line.Substring(i, 5) == "$rand")
                                        {
                                            //Debug.WriteLine("Randを代入");
                                            i += 4;
                                            tree.values.Add(new BulletValue(BLValueType.Rand, 0));
                                        }
                                    }
                                    else if (line[i] == '*' || line[i] == '/' || line[i] == '+' || line[i] == '-' || line[i] == '(' || line[i] == ')')
                                    {
                                        tree.values.Add(new BulletValue(BLValueType.Operator, line[i]));
                                        //Debug.WriteLine("演算子を代入 " + line[i]);
                                    }
                                    else if (line[i] == ' ' || line[i] == '\n')
                                    {
                                    }
                                    else
                                    {
                                        //Debug.WriteLine("構文にエラーがあります : " + line[i]);
                                    }
                                }

                                break;

                            case XmlNodeType.EndElement: //Display the end of the element.
                                if (tree.parent != null)
                                    tree = tree.parent;

                                //Debug.Write("</" + reader.Name + ">\n");
                                break;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                throw e;
            }
        }