//Generated by the GOLD Parser Builder

namespace FSO.Client.UI.Framework.Parser
{
	using System.IO;
	using System.Collections.Generic;
	using GOLDEngine;

	class UIScriptParser
    {
        private Parser parser = new Parser();
		private Dictionary<Token, object> DataMap = new Dictionary<Token, object>();

        private enum SymbolIndex
        {
            @Eof = 0,                                  // (EOF)
            @Error = 1,                                // (Error)
            @Comment = 2,                              // Comment
            @Newline = 3,                              // NewLine
            @Whitespace = 4,                           // Whitespace
            @Num = 5,                                  // '#'
            @Ltexclamminusminus = 6,                   // '<!--'
            @Minusminusgt = 7,                         // '-->'
            @Divgt = 8,                                // '/>'
            @Lt = 9,                                   // '<'
            @Ltdiv = 10,                               // '</'
            @Eq = 11,                                  // '='
            @Gt = 12,                                  // '>'
            @Beginliteral = 13,                        // BeginLiteral
            @Charname = 14,                            // CharName
            @Charnumber = 15,                          // CharNumber
            @Endliteral = 16,                          // EndLiteral
            @Id = 17,                                  // ID
            @Stringliteral = 18,                       // StringLiteral
            @Attribute = 19,                           // <Attribute>
            @Attributes = 20,                          // <Attributes>
            @Content = 21,                             // <Content>
            @Endtag = 22,                              // <End Tag>
            @Object = 23,                              // <Object>
            @Objects = 24,                             // <Objects>
            @Optionalid = 25,                          // <OptionalID>
            @Starttag = 26,                            // <Start Tag>
            @Text = 27,                                // <Text>
            @Unarytag = 28,                            // <Unary Tag>
            @Word = 29                                 // <Word>
        }

        private enum ProductionIndex
        {
            @Objects = 0,                              // <Objects> ::= <Object> <Objects>
            @Objects2 = 1,                             // <Objects> ::= <Object>
            @Object_Beginliteral_Endliteral = 2,       // <Object> ::= BeginLiteral <Content> EndLiteral
            @Object = 3,                               // <Object> ::= <Start Tag>
            @Object2 = 4,                              // <Object> ::= <Unary Tag>
            @Starttag_Lt_Id_Gt = 5,                    // <Start Tag> ::= '<' ID <OptionalID> <Attributes> '>'
            @Endtag_Ltdiv_Id_Gt = 6,                   // <End Tag> ::= '</' ID '>'
            @Unarytag_Lt_Id_Divgt = 7,                 // <Unary Tag> ::= '<' ID <OptionalID> <Attributes> '/>'
            @Optionalid_Stringliteral = 8,             // <OptionalID> ::= StringLiteral
            @Optionalid = 9,                           // <OptionalID> ::= 
            @Content = 10,                             // <Content> ::= <Objects>
            @Content2 = 11,                            // <Content> ::= <Text>
            @Attributes = 12,                          // <Attributes> ::= <Attribute> <Attributes>
            @Attributes2 = 13,                         // <Attributes> ::= 
            @Attribute_Id_Eq_Stringliteral = 14,       // <Attribute> ::= ID '=' StringLiteral
            @Attribute_Id_Eq_Id = 15,                  // <Attribute> ::= ID '=' ID
            @Text = 16,                                // <Text> ::= <Text> <Word>
            @Text2 = 17,                               // <Text> ::= <Word>
            @Word_Id = 18,                             // <Word> ::= ID
            @Word_Eq = 19,                             // <Word> ::= '='
            @Word_Charname = 20,                       // <Word> ::= CharName
            @Word_Charnumber = 21                      // <Word> ::= CharNumber
        }

        public object program;     //You might derive a specific object

        public void Setup()
        {
            //This procedure can be called to load the parse tables. The class can
            //read tables using a BinaryReader.
            parser.LoadTables(new BinaryReader(new FileStream("Content/UIScript.egt", FileMode.Open, FileAccess.Read, FileShare.ReadWrite)));
        }

        public bool Parse(TextReader reader)
        {
            //This procedure starts the GOLD Parser Engine and handles each of the
            //messages it returns. Each time a reduction is made, you can create new
            //custom object and reassign the .CurrentReduction property. Otherwise, 
            //the system will use the Reduction object that was returned.
            //
            //The resulting tree will be a pure representation of the language 
            //and will be ready to implement.

            GOLDEngine.ParseMessage response;
            bool done;                      //Controls when we leave the loop
            bool accepted = false;          //Was the parse successful?

            parser.Open(reader);
            parser.TrimReductions = false;  //Please read about this feature before enabling  

            done = false;
            while (!done)
            {
                response = parser.Parse();

                switch (response)
                {
                    case GOLDEngine.ParseMessage.LexicalError:
                        //Cannot recognize token
                        done = true;
                        break;

                    case GOLDEngine.ParseMessage.SyntaxError:
                        //Expecting a different token
                        done = true;
                        break;

                    case GOLDEngine.ParseMessage.Reduction:
                        //Create a customized object to store the reduction

                        CreateNewObject(parser.CurrentReduction as GOLDEngine.Reduction);
                        break;

                    case GOLDEngine.ParseMessage.Accept:
                        //Accepted!
                        //program = parser.CurrentReduction   //The root node!                 
                        done = true;
                        accepted = true;
                        break;

                    case GOLDEngine.ParseMessage.TokenRead:
                        //You don't have to do anything here.
                        break;

                    case GOLDEngine.ParseMessage.InternalError:
                        //INTERNAL ERROR! Something is horribly wrong.
                        done = true;
                        break;

                    case GOLDEngine.ParseMessage.NotLoadedError:
                        //This error occurs if the CGT was not loaded.                   
                        done = true;
                        break;

                    case GOLDEngine.ParseMessage.GroupError:
                        //GROUP ERROR! Unexpected end of file
                        done = true;
                        break;
                }
            } //while

            return accepted;
        }

        private object CreateNewObject(GOLDEngine.Reduction r)
        {
			object result = r.ToText();

			for (int i = 0; i < r.Count; i++)
			{
				if (!DataMap.ContainsKey(r[i]))
				{
					DataMap[r[i]] = r[i].ToText();
				}
			}

			switch ((ProductionIndex)r.Production.TableIndex())
            {
                case ProductionIndex.Objects:
                    var newResult = new List<UINode>();
                    newResult.Add((UINode)DataMap[r[0]]);
                    newResult.AddRange((List<UINode>)DataMap[r[1]]);
                    result = newResult;
                    program = result;
                    // <Objects> ::= <Object> <Objects> 
                    break;

                case ProductionIndex.Objects2:
                    // <Objects> ::= <Object>
                    var newResult2 = new List<UINode>();
                    newResult2.Add((UINode)DataMap[r[0]]);
                    result = newResult2;
                    program = result;
                    break;

                case ProductionIndex.Object_Beginliteral_Endliteral:
                    // <Object> ::= BeginLiteral <Content> EndLiteral
					result = UIGroup.FromReduction(r, DataMap);
                    break;

                case ProductionIndex.Object:
					// <Object> ::= <Start Tag>
					result = DataMap[r[0]];
                    break;

                case ProductionIndex.Object2:
                    // <Object> ::= <Unary Tag>
                    break;

                case ProductionIndex.Starttag_Lt_Id_Gt:
                    // <Start Tag> ::= '<' ID <OptionalID> <Attributes> '>'
                    var node = new UINode();
					node.Name = (string)DataMap[r[1]];
					node.ID = (string)DataMap[r[2]];
					var atts = (List<KeyValuePair<string, string>>)DataMap[r[3]];
                    foreach (var att in atts)
                    {
                        node[att.Key] = att.Value;
                    }
                    result = node;
                    break;

                case ProductionIndex.Endtag_Ltdiv_Id_Gt:
                    // <End Tag> ::= '</' ID '>'
                    break;

                case ProductionIndex.Unarytag_Lt_Id_Divgt:
                    // <Unary Tag> ::= '<' ID <OptionalID> <Attributes> '/>'
                    break;

                case ProductionIndex.Optionalid_Stringliteral:
                    // <OptionalID> ::= StringLiteral
					result = GetStringLiteral((string)DataMap[r[0]]);
                    break;

                case ProductionIndex.Optionalid:
                    // <OptionalID> ::= 
                    result = null;
                    break;

                case ProductionIndex.Content:
                    // <Content> ::= <Objects>
                    var newResult3 = new List<UINode>();
					newResult3.AddRange((List<UINode>)DataMap[r[0]]);
                    result = newResult3;
                    break;

                case ProductionIndex.Content2:
                    // <Content> ::= <Text>
                    var newResult4 = new List<UINode>();
					newResult4.Add((UINode)DataMap[r[0]]);
                    result = newResult4;
                    break;

                case ProductionIndex.Attributes:
                    // <Attributes> ::= <Attribute> <Attributes>
                    var attributeList = new List<KeyValuePair<string, string>>();
					attributeList.Add((KeyValuePair<string, string>)DataMap[r[0]]);
					if (r.Count > 1)
                    {
                        attributeList.AddRange((List<KeyValuePair<string, string>>)DataMap[r[1]]);
                    }
                    result = attributeList;
                    break;

                case ProductionIndex.Attributes2:
                    // <Attributes> ::= 
                    result = new List<KeyValuePair<string, string>>();
                    break;

                case ProductionIndex.Attribute_Id_Eq_Stringliteral:
                    // <Attribute> ::= ID '=' StringLiteral
					result = new KeyValuePair<string, string>((string)DataMap[r[0]], GetStringLiteral((string)DataMap[r[2]]));
                    break;

                case ProductionIndex.Attribute_Id_Eq_Id:
                    // <Attribute> ::= ID '=' ID
					result = new KeyValuePair<string, string>((string)DataMap[r[0]], (string)DataMap[r[2]]);
                    break;

                case ProductionIndex.Text:
                    // <Text> ::= <Text> <Word>
                    break;

                case ProductionIndex.Text2:
                    // <Text> ::= <Word>
                    break;

                case ProductionIndex.Word_Id:
                    // <Word> ::= ID
                    break;

                case ProductionIndex.Word_Eq:
                    // <Word> ::= '='
                    break;

                case ProductionIndex.Word_Charname:
                    // <Word> ::= CharName
                    break;

                case ProductionIndex.Word_Charnumber:
                    // <Word> ::= CharNumber
                    break;

            }  //switch

			DataMap[r] = result;
            return result;
        }

        private string GetStringLiteral(string input)
        {
            if (input.StartsWith("\""))
            {
                input = input.Substring(1);
            }
            if (input.EndsWith("\""))
            {
                input = input.Substring(0, input.Length - 1);
            }
            return input;
        }

    }; //MyParser
}