using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.ComponentModel;

namespace VEPROMS.CSLA.Library
{
	[Serializable]
	[TypeConverter(typeof(ExpandableObjectConverter))]
	public class ROFSTLookup
	{
		#region Log4Net
		private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		#endregion
		#region Structs
		[Serializable]
		public struct roHdr
		{
			public int hSize;
			public int hYear;
			public byte hMonth;
			public byte hDay;
			public int hcYear;
			public byte hcMonth;
			public byte hcDay;
			public byte hcHour;
			public byte hcMin;
			public byte hcSec;
			public byte hcHund;
			public rodbi[] myDbs;
		};
		[Serializable]
		public struct rodbi
		{
			public int dbiID;
			public int dbiType;
			public int dbiAW;
			public string dbiTitle;
			public string dbiAP;
			public int ID;
			public int ParentID;
			public rochild[] children;
		};
		public struct rogrp
		{
			public int ID;
			public int ParentID;
			public rochild[] children;
			public string value;
			public string appid;
		};
		public struct rochild
		{
			public int ID;
			public int ParentID;
			public int type;
			public string title;
			public string roid;
			public string appid;
			public string value;
			public rochild[] children;
		};
		public class roChild
		{
			rochild _MyChild;
			public rochild MyChild
			{
				get { return _MyChild; }
				set { _MyChild = value; }
			}
			public roChild(rochild myChild)
			{
				_MyChild = myChild;
			}
			public override string ToString()
			{
				return _MyChild.title;
			}
		};
		#endregion
		#region Local Data
		private string _ROValue = "";
		private List<string> lstRoValues;
		private Dictionary<string, string> DictROVar = new Dictionary<string, string>();
		#endregion
		#region Constructors
		private ROFst _ROFst;
        private ROFstInfo _ROFstInfo;
		private DocVersionInfo _DocVersionInfo;
        public ROFSTLookup(ROFst rofst)
		{
            _ROFst = rofst;
			_ROFstInfo = null;
			using (ROFstInfo rfi = ROFstInfo.Get(_ROFst.ROFstID))
			{
				_DocVersionInfo = rfi.docVer==null?null: DocVersionInfo.Get(rfi.docVer.VersionID);
			}
			ParseIntoDictionary(rofst.ROLookup);
		}
		public ROFSTLookup(ROFstInfo rofstinfo)
		{
			_ROFstInfo = rofstinfo;
			_ROFst = null;
			// docversion will be null if we're working with an ro.fst that is not currently connected
			// to a docversion.  One example of this is when updating ro.fst and comparing the original
			// with the new to find differences.  The docversioninfo is only used to get unit/master
			// slave info, thus is not needed to compare the raw values.
			_DocVersionInfo = _ROFstInfo.docVer==null?null: DocVersionInfo.Get(_ROFstInfo.docVer.VersionID);
			ParseIntoDictionary(rofstinfo.ROLookup);
		}
		#endregion
		#region PropertiesAndData
		public roHdr myHdr;
		private int TableID;
		private Dictionary<string, rochild> dicRos;
		private Dictionary<int, rochild> dicRosIntIDs;
		#endregion
		#region AppSupport
		public void Close()
		{
			// remove the dictionary
			if (dicRosIntIDs != null)dicRosIntIDs.Clear();
			dicRosIntIDs = null;
			if (dicRos != null)dicRos.Clear();
			dicRos = null;
		}
		public List<string> GetValueDifferences(ROFSTLookup origROFst, ref List<string> delList)
		{
			// use this list to see what differences are between it and the original
			List<string> modList = new List<string>();
			// assume each rofstlookup has a parsed dictionary
			foreach (string key in origROFst.dicRos.Keys)
			{
				string cvalue = null;
				string ovalue = origROFst.dicRos[key].value;
				if (dicRos.ContainsKey(key)) cvalue = dicRos[key].value;
				if (cvalue == null && cvalue != ovalue)
					delList.Add(key);
				else if (cvalue != ovalue) modList.Add(key);
			}
			return modList;
		}
		//public static ROImageInfo Get(RODbInfo rodbinfo, string filename)
		//{
		//    if (rodbinfo.RODbROImageCount != 0)
		//    {
		//        foreach (ROImageInfo ri in rodbinfo.RODbROImages)
		//        {
		//            if (ri.FileName == filename) return ri;
		//        }
		//    }
		//    return null;
		//}
		// this only gets rochild values. Later we may want another
		// dictionary to get groups.
		public string GetRoValue(string ROID)
		{
			if (dicRos == null) ParseIntoDictionary(_ROFst!=null?_ROFst.ROLookup:_ROFstInfo.ROLookup);
			// Use the ROID to get the value from the dictionary
			if (dicRos.ContainsKey(ROID))
			{
				rochild rochld = (rochild)dicRos[ROID];
				return rochld.value;
			}
			return null;
		}
		public rochild GetRoChild(string ROID)
		{
			if (dicRos == null) ParseIntoDictionary(_ROFst != null ? _ROFst.ROLookup : _ROFstInfo.ROLookup);
			// Use the ROID to get the value from the dictionary
			if (dicRos.ContainsKey(ROID))
			{
				rochild rochld = (rochild)dicRos[ROID];
				return rochld;
			}
			rochild tmp = new rochild();
			tmp.ID = -1;
			return tmp;
		}
		public rochild GetRoChildFromID(int id)
		{
			if (dicRosIntIDs == null) ParseIntoDictionary(_ROFst != null ? _ROFst.ROLookup : _ROFstInfo.ROLookup);
			// Use the id to get the value from the dictionary
			if (dicRosIntIDs.ContainsKey(id))
			{
				rochild rochld = (rochild)dicRosIntIDs[id];
				return rochld;
			}
			rochild tmp = new rochild();
			tmp.ID = -1;
			return tmp;
		}
		public rodbi[] GetRODatabaseList()
		{
			return myHdr.myDbs;
		}
		//public string GetDefaultROPrefix()
		//{
		//    if (docVer != null)
		//        return docVer.DocVersionConfig.RODefaults_setpointprefix;
		//    else
		//        return "SP1"; // Not Sure about this...
		//}
		//public string GetDefaultGraphicsPrefix()
		//{
		//    if (docVer != null)
		//        return docVer.DocVersionConfig.RODefaults_graphicsprefix;
		//    else
		//        return "IG1"; // Not Sure about this...
		//}
		#region Update Ro Values
		/// <summary>
		/// Updates an ro.fst into a sql database.  
		/// </summary>
		/// <param name="rdi" - the Rodb to use as the path for updating the ro.fst, i.e.
		///              import from there.
		/// <param name="docver" - hook into this doc version></param>
		/// <returns>ROFst: Returns the created rofst object</returns>
		//public static ROFst UpdateRoFst(RODbInfo rdi, DocVersionAssociation dva, DocVersion docver)
		//{
		//    // file validity checks are done before getting here - just do the import
		//    // here.
		//    string rofstfilepath = rdi.FolderPath + @"\ro.fst";

		//    DirectoryInfo di = new DirectoryInfo(rdi.FolderPath);

		//    // There may be more than 1 'ro' as the 'ROName' field (ROName is derived from the ropath).
		//    // Get new name be incrementing, if so.
		//    string newname = NewROName(di.Name);

		//    // Next read in the rofst & make the rofst record.
		//    FileStream fsIn = new FileStream(rofstfilepath, FileMode.Open, FileAccess.Read, FileShare.Read);
		//    // Create an instance of StreamReader that can read characters from the FileStream.
		//    BinaryReader r = new BinaryReader(fsIn);
		//    byte[] ab = r.ReadBytes((int)fsIn.Length);
		//    fsIn.Close();

		//    using (RODb rd = RODb.Get(rdi.RODbID))
		//    {
		//        ROFst rofst = ROFst.MakeROFst(rd, ab, null, di.LastWriteTime, rdi.UserID);
		//        // Hook this into the current docversion by replacing the rofstid field in the doc version
		//        // association object:
		//        dva.MyROFst = rofst;
		//        docver.Save();

		//        // Now load any images in... type 8 - integrated graphics ro type
		//        ROFstInfo rofstInfo = ROFstInfo.Get(rofst.ROFstID);
		//        rofstInfo.ParseIntoDictionary(rofstInfo.ROFST);
		//        for (int i = 0; i < rofstInfo.myHdr.myDbs.Length; i++)
		//        {
		//            // walk through the rofst 'database' searching for all nodes that are integrated graphics, type 8:
		//            if (rofstInfo.myHdr.myDbs[i].children != null) rofstInfo.MigrateRoFstGraphics(rdi, rofstInfo.myHdr.myDbs[i].children);
		//        }
		//        return rofst;
		//    }
		//}
		//private static string RoAppConfigExt(string fstPath)
		//{
		//    string inipath = fstPath + @"\roapp.ini";
		//    if (!File.Exists(inipath)) return null;
		//    StreamReader myReader = new StreamReader(inipath);
		//    string sLine;
		//    int indx = -1;
		//    while ((sLine = myReader.ReadLine()) != null)
		//    {
		//        if (sLine.Length > 0 && sLine.Substring(0, 1) != ";")
		//        {
		//            if ((indx = sLine.ToLower().IndexOf("extention")) >= 0)
		//            {
		//                indx = sLine.IndexOf("=", indx + 9);
		//                return sLine.Substring(indx + 1, sLine.Length - indx - 1).Trim();
		//            }
		//        }
		//    }
		//    myReader.Close();
		//    return null;
		//}
		//private static string NewROName(string roName)
		//{
		//    string retval = roName;
		//    int iSuffix = -1;
		//    RODbInfoList rodblist = RODbInfoList.Get();


		//    foreach (RODbInfo rdi in rodblist)
		//    {
		//        if (rdi.ROName.StartsWith(roName))
		//        {
		//            if (rdi.ROName == roName)
		//                iSuffix = 0;
		//            else if (Regex.IsMatch(rdi.ROName, roName + "[_][0-9]+"))
		//            {
		//                int ii = int.Parse(rdi.ROName.Substring(1 + roName.Length));
		//                if (ii > iSuffix) iSuffix = ii;
		//            }
		//        }
		//    }
		//    if (iSuffix >= 0)
		//        retval = string.Format("{0}_{1}", roName, iSuffix + 1);
		//    return retval;
		//}
		//private void MigrateRoFstGraphics(RODbInfo rdi, ROFstInfo.rochild[] rochild)
		//{
		//    for (int i = 0; i < rochild.Length; i++)
		//    {
		//        if (rochild[i].type == 8) AddGraphic(rdi, rochild[i].value);
		//        if (rochild[i].children != null) MigrateRoFstGraphics(rdi, rochild[i].children);
		//    }
		//}
		//private void AddGraphic(RODbInfo rdi, string p)
		//{
		//    if (p == null) return;
		//    string imgname = p.Substring(0, p.IndexOf('\n'));
		//    int thedot = imgname.LastIndexOf('.');
		//    string fname = imgname;
		//    if (thedot == -1 || (thedot != (imgname.Length - 4)))
		//    {
		//        RODbConfig roDbCfg = new RODbConfig(rdi.Config);
		//        fname += string.Format(".{0}", roDbCfg.GetDefaultGraphicExtension());
		//    }

		//    string imgfile = rdi.FolderPath + @"\" + fname;

		//    ROImage roImg = null;
		//    if (File.Exists(imgfile))
		//    {
		//        FileInfo fi = new FileInfo(imgfile);
		//        // if the roimage record exists, don't create a new one...
		//        using (roImg = ROImage.GetByRODbID_FileName_DTS(rdi.RODbID, imgname, fi.LastWriteTime))
		//        {
		//            if (roImg == null)
		//            {
		//                FileStream fsIn = new FileStream(imgfile, FileMode.Open, FileAccess.Read, FileShare.Read);
		//                BinaryReader r = new BinaryReader(fsIn);
		//                byte[] ab = r.ReadBytes((int)fsIn.Length);
		//                r.Close();
		//                fsIn.Close();
		//                using (RODb rodb = RODb.Get(rdi.RODbID))
		//                {
		//                    roImg = ROImage.MakeROImage(rodb, imgname, ab, null, fi.LastWriteTime, "Migration");
		//                }
		//            }
		//            Figure figure = Figure.GetByROFstID_ImageID(this.ROFstID, roImg.ImageID);
		//            if (figure != null) return;
		//            using (ROFst rofst = ROFst.Get(this.ROFstID))
		//            {
		//                figure = Figure.MakeFigure(rofst, roImg, null);
		//            }
		//        }
		//    }
		//    else
		//        Console.WriteLine(string.Format("{0}", imgfile), "Cannot Find Image File");
		//}
		#endregion
		#endregion
		#region LoadStructs
		private int StringLength(byte[] ab, int offset)
		{
			int i = 0;
			while (ab[i + offset] != 0) i++;
			return i;
		}
		private rogrp LoadGroup(byte[] ab, int offset)
		{
			rogrp myGrp = new rogrp();
			myGrp.ID = BitConverter.ToInt32(ab, offset);
			myGrp.ParentID = BitConverter.ToInt32(ab, offset + 4);
			int howmany = BitConverter.ToInt16(ab, offset + 8);
			if (howmany > 0)
			{
				myGrp.children = new rochild[howmany];
				int myOffset = offset + 10;
				for (int i = 0; i < myGrp.children.Length; i++)
				{
					int childOffset = BitConverter.ToInt32(ab, myOffset);
					rochild tmp = new rochild();
					//tmp.offset=BitConverter.ToInt32(ab,myOffset);
					tmp.type = BitConverter.ToInt16(ab, myOffset + 4);
					int slen = StringLength(ab, myOffset + 6);
					tmp.title = Encoding.Default.GetString(ab, myOffset + 6, slen);
					myOffset += (7 + slen);
					rogrp tmpg = LoadGroup(ab, childOffset);
					MultipleReturnValuesInheritType(ref tmpg, tmp.type);
					tmp.ID = tmpg.ID;
					tmp.ParentID = tmpg.ParentID;
					tmp.children = tmpg.children;
					tmp.value = tmpg.value;
					tmp.appid = tmpg.appid;
					tmp.roid = TableID.ToString("X4") + tmp.ID.ToString("X8");
					dicRos.Add(tmp.roid, tmp);
					if (!dicRosIntIDs.ContainsKey(tmp.ID)) dicRosIntIDs.Add(tmp.ID, tmp);
					int j;
					for (j = i - 1; j >= 0 && tmp.ID < myGrp.children[j].ID; j--)
					{
						myGrp.children[j + 1] = myGrp.children[j];
					}
					myGrp.children[j + 1] = tmp;
				}
			}
			else
			{
				int slen = StringLength(ab, offset + 12);
				//myGrp.value = Encoding.Default.GetString(ab, offset + 12, slen);
				ProcessROReturnValue(ref myGrp, Encoding.Default.GetString(ab, offset + 12, slen));
				int slen2 = StringLength(ab, offset + 13 + slen);
				myGrp.appid = Encoding.Default.GetString(ab, offset + 13 + slen, slen2);
			}
			return myGrp;
		}

		/// <summary>
		/// This function will take the raw RO return value and resolve any macros, conditionals, and
		/// generated the return value or a list of multiple return values.
		/// </summary>
		/// <param name="myGrp"></param>
		/// <param name="rawvalue"></param>
		private void ProcessROReturnValue(ref rogrp myGrp, string rawvalue)
		{
			if (dicRos == null) ParseIntoDictionary(_ROFst != null ? _ROFst.ROLookup : _ROFstInfo.ROLookup);
			List<string> lstROVals = GetROReturnValue(rawvalue);
			if (lstROVals.Count > 1) // mulitple return values
			{
				myGrp.children = new rochild[lstROVals.Count];
				for (int i = 0; i < lstROVals.Count; i++)
				{
					myGrp.children[i].value = lstROVals[i];
					myGrp.children[i].roid = TableID.ToString("X4") + myGrp.ID.ToString("X8") + i.ToString("X4");
					myGrp.children[i].type = -1; // Multiple return value inherit type from parent
					myGrp.children[i].title = lstROVals[i];
				}
			}
			else
				myGrp.value = lstROVals[0];
			return;

		}
		/// <summary>
		/// Multiple return values need to get the type from the parent node.
		/// </summary>
		/// <param name="myGrp"></param>
		/// <param name="parenttype"></param>
		private void MultipleReturnValuesInheritType(ref rogrp myGrp, int parenttype)
		{
			if (myGrp.children != null)
			{
				for (int cnt = 0; cnt < myGrp.children.Length; cnt++)
				{
					if (myGrp.children[cnt].type == -1)
					{
						myGrp.children[cnt].type = parenttype;
						myGrp.children[cnt].appid = myGrp.appid;
					}
				}
			}
		}

		private void ParseIntoDictionary(byte[] ab)
		{
			if (dicRos == null) dicRos = new Dictionary<string, rochild>();
			if (dicRosIntIDs == null) dicRosIntIDs = new Dictionary<int, rochild>();

			myHdr.hSize = BitConverter.ToInt32(ab, 0);
			myHdr.hYear = BitConverter.ToInt16(ab, 4);
			myHdr.hMonth = ab[6];
			myHdr.hDay = ab[7];
			myHdr.hcYear = BitConverter.ToInt16(ab, 8);
			myHdr.hcMonth = ab[10];
			myHdr.hcDay = ab[11];
			myHdr.hcHour = ab[12];
			myHdr.hcMin = ab[13];
			myHdr.hcSec = ab[14];
			myHdr.hcHund = ab[15];
			int hdrOffset = BitConverter.ToInt32(ab, 16);
			int howbig = BitConverter.ToInt32(ab, hdrOffset);
			int dbs = BitConverter.ToInt16(ab, hdrOffset + 4);
			myHdr.myDbs = new rodbi[dbs];
			for (int i = 0; i < dbs; i++)
			{
				int offset = hdrOffset + 6 + (i * 30);
				myHdr.myDbs[i].dbiID = BitConverter.ToInt16(ab, offset + 0);
				TableID = myHdr.myDbs[i].dbiID;
				myHdr.myDbs[i].dbiType = BitConverter.ToInt16(ab, offset + 2);
				myHdr.myDbs[i].dbiAW = BitConverter.ToInt16(ab, offset + 4);
				rogrp tmp = LoadGroup(ab, BitConverter.ToInt32(ab, offset + 6));
				myHdr.myDbs[i].ID = tmp.ID;
				myHdr.myDbs[i].children = tmp.children;
				int iPtr = BitConverter.ToInt32(ab, offset + 22) + hdrOffset + 6;
				myHdr.myDbs[i].dbiTitle = Encoding.Default.GetString(ab, iPtr, StringLength(ab, iPtr));
				iPtr = BitConverter.ToInt32(ab, offset + 26) + hdrOffset + 6;
				myHdr.myDbs[i].dbiAP = Encoding.Default.GetString(ab, iPtr, StringLength(ab, iPtr));
			}
		}
		#endregion
		#region GetRoValues
		public List<string> GetROReturnValue(string roval)
		{
			lstRoValues = new List<string>();
			DictROVar = new Dictionary<string, string>(); // set up a dictionary of RO defined Variables
			string tmp = _DocVersionInfo==null?roval:ProcessRO(_DocVersionInfo.ProcessDocVersionSpecificInfo(roval), false);
			if (lstRoValues.Count == 0) // was not a multiple return value
				lstRoValues.Add(tmp);
			return lstRoValues;
		}

		private string ProcessRO(string roval, bool multiRtnVal)
		{
			string str = roval;
			string rtnstr = "";
			int l = roval.Length;
			while (l > 0)
			{
				int ptr = NextDelimiter("{", str);
				if (ptr == -1)
				{ // add remaining text
					//add(new seText(str, l));
					rtnstr += str;
					l = 0; // break out of while loop
				}
				else
				{
					int cnt = ptr; //(int)(ptr - str);
					if (cnt > 0)
					{	// add text
						//add(new seText(str, cnt));
						rtnstr += str.Substring(0, cnt);
						l -= cnt;
						//str = ptr;
						str = str.Substring(ptr);
					}
					ptr = MatchingBrace(str) + 1;
					cnt = ptr; //(int)(ptr - str);
					bool nfnd = false;
					string pbstr = ProcessBrace(str.Substring(1, cnt - 2), cnt - 2, ref nfnd, multiRtnVal);
					if (nfnd)
						rtnstr += str.Substring(0, cnt);
					//						add(new seText(str, cnt));
					else
						rtnstr += pbstr;
					l -= cnt;
					//str = ptr;
					str = str.Substring(ptr);
				}
			}
			//rtnstr = rtnstr.Replace("`", @"\'b0");			// convert backquote to degree - left over from DOS days.
			return rtnstr;
		}

		private string ProcessConditional(string cnd, string opt, int lencnd, int lenopt, bool multiRtnVal)
		{
			// equaluate condition
			string stat = (_DocVersionInfo != null) ? this._DocVersionInfo.Evaluate(cnd, lencnd) : "";
			int ls = stat.Length;//strlen(stat);
			if (ls == 0)
				return ""; // if evaluation not defined then return an empty string - no matches can be made
			// look for match - remember default
			string match = null;
			int matchlen = 0;
			string def = null;
			int deflen = 0;
			while (lenopt > 0 && match == null)
			{
				int end = MatchingBrace(opt);
				int eq = opt.IndexOf('=');// strchr(opt, '=');
				int len = end + 1; //(int)((end + 1) - opt);	// +1 to include the '}'
				int li = eq - 1;//(int)(eq - opt) - 1;
				int ld = len - li - 3;// One for '{', '=' and '}'
				if (def == null || eq == 1) // (!def || eq == opt+1)
				{
					def = opt.Substring(eq + 1); //def=eq+1;
					deflen = ld;
				}
				if (ls == li && (stat.IndexOf(opt.Substring(1), li) > -1)) //(ls == li && !strncmp(stat, opt + 1, li))
				{
					match = opt.Substring(eq + 1, ld);// match = eq + 1;
					matchlen = ld;
				}
				opt = opt.Substring(len); //opt += len;// point to the next piece
				lenopt -= len;
			}
			// if match process option - or process default
			if (match == null) //(!match)
			{
				match = def.Substring(0, deflen);
				matchlen = deflen;
			}
			return ProcessRO(match, multiRtnVal); //process(match, matchlen);
		}

		private string ProcessBrace(string str, int l, ref bool nfnd, bool multiRtnVal)
		{
			string rtnstr = "";
			int nxt = NextDelimiter("{=", str); //nextDelimiter("{=", str, l);
			if (nxt == -1) // no delimiter found
			{ // VarUse
				//strList *found=vl->lookFor(str,l);
				bool found = DictROVar.ContainsKey(str);
				if (found)
					rtnstr = DictROVar[str];
				//add(new seVarUse(found));
				else
					nfnd = true;
			}
			else
			{
				if (str[nxt] == '{')
				{ // conditonal or menu
					if (nxt == 0) // if (nxt == str)
					{ // menu
						// TODO: implement Menu logic
						//ml->process(str, l, vl);
						//add(new seMenuUse(ml));
						//lstRoValues.Add(ProcessRO(str.Substring(0,l), true));
						ProcessMultiReturnValues(str, l);
					}
					else
					{ // conditional
						rtnstr = ProcessConditional(str, str.Substring(nxt), nxt, str.Length - nxt - 1, multiRtnVal);//processCondition(str, nxt, (int)(nxt - str), l - (int)(nxt - str));
					}
				}
				else
				{ // must be variable definiton
					//vl->add(str, nxt+1, (int)(nxt-str), (l - (int)(nxt-str))-1, ml);

					// 'l' is the lenght up to the matching brace of the variable definition
					string tmpval = ProcessRO(str.Substring(nxt + 1, l - nxt - 1), multiRtnVal);
					if (tmpval.Equals(string.Empty)) tmpval = " "; // nothing assinged to variable
					DictROVar.Add(str.Substring(0, nxt), tmpval);
					if (multiRtnVal)
						rtnstr = tmpval;
				}
			}
			return rtnstr;
		}
		private Dictionary<string, List<roChild>> _ValueLookupDictionary = null;
		public List<roChild> GetRosByValue(string value)
		{
			if (_ValueLookupDictionary == null) 
				BuildValueDictionary();
			if (value == string.Empty)
				return null;
			if(_ValueLookupDictionary.ContainsKey(value.ToUpper()))
				return _ValueLookupDictionary[value.ToUpper()];
			return null;
		}
		private void BuildValueDictionary()
		{
			_ValueLookupDictionary = new Dictionary<string, List<roChild>>();
			if (dicRos == null) 
				ParseIntoDictionary(_ROFst != null ? _ROFst.ROLookup : _ROFstInfo.ROLookup);
			foreach (rochild child in dicRos.Values)
			{
				if (child.value != null)
				{
					string value = child.value.ToUpper();
					if (_ValueLookupDictionary.ContainsKey(value))
						_ValueLookupDictionary[value].Add(new roChild(child));
					else
					{
						List<roChild> children = new List<roChild>();
						children.Add(new roChild(child));
						_ValueLookupDictionary.Add(value, children);
					}
				}
			}
		}
		private void ProcessMultiReturnValues(string str, int len)
		{
			string tstr = str.Substring(0, len);
			while (tstr.Length > 0)
			{
				int idx = MatchingBrace(tstr);
				lstRoValues.Add(ProcessRO(tstr.Substring(0, idx + 1), true));
				tstr = tstr.Substring(idx + 1);
			}
		}


		private int MatchingBrace(string str)
		{
			int level = 1;
			int idx = 0; // the while will skip the first position (the first brace)
			while (level > 0 && idx++ < str.Length)
			{
				switch (str[idx])
				{
					case '{':
						level++;
						break;
					case '}':
						level--;
						break;
				}
			}
			if (level != 0)
				idx = -1; // didn't find matching brace

			return idx; //length including end brace
		}

		private int NextDelimiter(string delim, string str)
		{
			int idx;
			idx = str.IndexOfAny(delim.ToCharArray());
			return idx;
		}

	#endregion
	}
}