示例#1
0
        void ParseLine(string pureLine, int i, List <FileComponent> fileStructure, List <string> fileStructureComments)
        {
            string[] split         = pureLine.Split(';');
            string   line          = split[0];
            string   comment       = pureLine.Substring(split[0].Length);
            string   warningString = "WARNING while parsing \"" + Filename + "\": Line " + (i + 1) + ": ";

            // Helper functions

            Action <FileComponent, string> AddComponent = (component, c) => {
                fileStructure.Add(component);
                fileStructureComments.Add(c);
                if (component is Label)
                {
                    AddLabelToDictionaries(component as Label);
                }
            };
            Action <Label> AddLabelAndPopFileStructure = (label) => {
                fileStructure.RemoveAt(fileStructure.Count - 1);
                string c = fileStructureComments[fileStructureComments.Count - 1];
                fileStructureComments.RemoveAt(fileStructureComments.Count - 1);
                AddComponent(label, c);
            };
            Action <Data> AddDataAndPopFileStructure = (data) => {
                fileStructure.RemoveAt(fileStructure.Count - 1);
                string c = fileStructureComments[fileStructureComments.Count - 1];
                fileStructureComments.RemoveAt(fileStructureComments.Count - 1);
                AddComponent(data, c);
            };
            Action PopFileStructure = () => {
                fileStructure.RemoveAt(fileStructure.Count - 1);
                fileStructureComments.RemoveAt(fileStructureComments.Count - 1);
            };

            // Sub-function: returns true if a meaning for the token was found.
            Func <string[], IList <int>, bool> ParseData = (fTokens, fSpacing) =>
            {
                List <string> standardValues = new List <string>();

                // Variables used for some of the goto's
                int size = -1;

                for (int j = 1; j < fTokens.Length; j++)
                {
                    standardValues.Add(fTokens[j]);
                }

                switch (fTokens[0].ToLower())
                {
                case ".incbin":
                {
                    Data d = new Data(Project, fTokens[0], standardValues, -1,
                                      this, fSpacing);
                    AddDataAndPopFileStructure(d);
                }
                break;

                case ".dw":
                    if (context == "RAMSECTION" || context == "ENUM")
                    {
                        break;
                    }
                    if (fTokens.Length < 2)
                    {
                        log.Warn(warningString + "Expected .DW to have a value.");
                        break;
                    }
                    size = 2;
                    goto arbitraryLengthData;

                case ".db":
                    if (context == "RAMSECTION" || context == "ENUM")
                    {
                        break;
                    }
                    if (fTokens.Length < 2)
                    {
                        log.Warn(warningString + "Expected .DB to have a value.");
                        break;
                    }
                    size = 1;
                    goto arbitraryLengthData;

                case "dwbe":
                    if (fTokens.Length < 2)
                    {
                        log.Warn(warningString + "Expected dwbe to have a value.");
                        break;
                    }
                    size = 2;
                    goto arbitraryLengthData;

                case "dbrev":
                    if (fTokens.Length < 2)
                    {
                        log.Warn(warningString + "Expected dbrev to have a value.");
                        break;
                    }
                    size = 1;
                    goto arbitraryLengthData;
arbitraryLengthData:
                    PopFileStructure();
                    for (int j = 1; j < fTokens.Length; j++)   // Each value is added as individual data
                    {
                        string[]   values      = { fTokens[j] };
                        List <int> newfSpacing = new List <int> {
                            fSpacing[0], fSpacing[j], 0
                        };
                        if (j == fTokens.Length - 1)
                        {
                            newfSpacing[2] = fSpacing[j + 1];
                        }

                        Data d = new Data(Project, fTokens[0], values, size,
                                          this, newfSpacing);
                        if (j != fTokens.Length - 1)
                        {
                            d.EndsLine = false;
                        }
                        if (j != 1)
                        {
                            d.PrintCommand = false;
                        }
                        AddComponent(d, "");
                    }
                    break;

                case "db":
                    if (context != "RAMSECTION" && context != "ENUM")
                    {
                        goto default;
                    }
                    address++;
                    break;

                case "dw":
                    if (context != "RAMSECTION" && context != "ENUM")
                    {
                        goto default;
                    }
                    address += 2;
                    break;

                case "dsb":
                    if (context != "RAMSECTION" && context != "ENUM")
                    {
                        goto default;
                    }
                    address += Project.EvalToInt(fTokens[1]);
                    break;

                case "dsw":
                    if (context != "RAMSECTION" && context != "ENUM")
                    {
                        goto default;
                    }
                    address += Project.EvalToInt(fTokens[1]) * 2;
                    break;

                case "m_animationloop":
                {
                    Data d = new Data(Project, fTokens[0], standardValues, 2,
                                      this, fSpacing);
                    AddDataAndPopFileStructure(d);
                    break;
                }

                case "m_rgb16":
                    if (fTokens.Length != 4)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 3 parameters");
                        break;
                    }
                    {
                        Data d = new RgbData(Project, fTokens[0], standardValues,
                                             this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                case "m_gfxheader":
                case "m_gfxheaderforcemode":
                    if (fTokens.Length < 4 || fTokens.Length > 5)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 3-4 parameters");
                        break;
                    }
                    {
                        Data d = new GfxHeaderData(Project, fTokens[0], standardValues,
                                                   this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                case "m_paletteheaderbg":
                case "m_paletteheaderspr":
                    if (fTokens.Length != 5)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 4 parameters");
                        break;
                    }
                    {
                        Data d = new PaletteHeaderData(Project, fTokens[0], standardValues,
                                                       this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                case "m_tilesetheader":
                    if (fTokens.Length != 6)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 5 parameters");
                        break;
                    }
                    {
                        Data d = new TilesetHeaderData(Project, fTokens[0], standardValues,
                                                       this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                case "m_tilesetdata":
                    if (fTokens.Length != 2)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 1 parameter");
                        break;
                    }
                    {
                        Stream file = Project.GetBinaryFile("tilesets/" + Project.GameString + "/" + fTokens[1] + ".bin");
                        Data   d    = new Data(Project, fTokens[0], standardValues,
                                               (Int32)file.Length, this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                case "m_roomlayoutdata":
                    if (fTokens.Length != 2)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 1 parameter");
                        break;
                    }
                    {
                        Label l = new Label(this, fTokens[1]);
                        l.Fake = true;
                        AddLabelAndPopFileStructure(l);
                        Data d = new Data(Project, fTokens[0], standardValues, -1,
                                          this, fSpacing);
                        AddComponent(d, "");
                        break;
                    }

                case "m_seasonalarea":
                    // In season's "areas.s", the m_SeasonalArea macro points to a label which
                    // contains 4 area definitions (one for each season).
                    if (fTokens.Length != 2)
                    {
                        log.Warn(warningString + "Expected " + fTokens[0] + " to take 1 parameter");
                        break;
                    }
                    {
                        // Create a data object considered to have a size of 8 bytes
                        Data d = new Data(Project, fTokens[0], standardValues, 8,
                                          this, fSpacing);
                        AddDataAndPopFileStructure(d);
                        break;
                    }

                default:
                {
                    Data d = null;
                    // Try object commands
                    for (int j = 0; j < ObjectGroup.ObjectCommands.Length; j++)
                    {
                        string s = ObjectGroup.ObjectCommands[j];

                        if (s.ToLower() == fTokens[0].ToLower())
                        {
                            int minParams = ObjectGroup.ObjectCommandMinParams[j];
                            int maxParams = ObjectGroup.ObjectCommandMaxParams[j];

                            if (minParams == -1)
                            {
                                minParams = maxParams;
                            }
                            if (maxParams == -1)
                            {
                                maxParams = minParams;
                            }
                            if (fTokens.Length - 1 < minParams || fTokens.Length - 1 > maxParams)
                            {
                                log.Warn(warningString + "Expected " + fTokens[0] + " to take " +
                                         minParams + "-" + maxParams + "parameter(s)");
                                break;
                            }

                            var objectType = (ObjectType)j;

                            d = new ObjectData(Project, fTokens[0], standardValues,
                                               this, fSpacing, objectType);
                            break;
                        }
                    }
                    // Try warp sources
                    foreach (string s in WarpSourceData.WarpCommands)
                    {
                        if (s.ToLower() == fTokens[0].ToLower())
                        {
                            d = new WarpSourceData(Project, fTokens[0], standardValues,
                                                   this, fSpacing);
                        }
                    }
                    // Try warp dest
                    if (WarpDestData.WarpCommand.ToLower() == fTokens[0].ToLower())
                    {
                        d = new WarpDestData(Project, fTokens[0], standardValues,
                                             this, fSpacing);
                    }

                    if (d != null)
                    {
                        AddDataAndPopFileStructure(d);
                        break;
                    }
                    return(false);
                }
                }
                return(true);
            };

            // Add raw string to file structure, it'll be removed if
            // a better representation is found
            fileStructure.Add(new StringFileComponent(this, line, null));
            fileStructureComments.Add(comment);

            if (line.Trim().Length == 0)
            {
                return;
            }

            // TODO: split tokens more intelligently, ie: recognize this as one token: $8000 | $03
            //string[] tokens = line.Split(new char[] { ' ', '\t'} );
            string[] tokens = Regex.Split(line.Trim(), @"\s+");

            List <int> spacing = new List <int>();

            int[] tokenStartIndices = new int[tokens.Length];
            {
                // Generate "spacing" list, keeps track of whitespace
                // between arguments (+'ve = spaces, -'ve = tabs)
                int index = 0;

                for (int j = 0; j < tokens.Length + 1; j++)
                {
                    int spaces = 0;
                    while (index < line.Length && (line[index] == ' ' || line[index] == '\t'))
                    {
                        if (line[index] == ' ' && spaces >= 0)
                        {
                            spaces++;
                        }
                        else if (line[index] == '\t' && spaces <= 0)
                        {
                            spaces--;
                        }
                        index++;
                    }
                    if (j < tokens.Length)
                    {
                        tokenStartIndices[j] = index;
                    }
                    spacing.Add(spaces);
                    while (index < line.Length && line[index] != ' ' && line[index] != '\t')
                    {
                        index++;
                    }
                }
            }


            if (tokens.Length > 0)
            {
                // Check if we're currently skipping over stuff because of .ifdefs
                if (ifdefCondition == false)
                {
                    if (tokens[0].ToLower() == ".ifdef")
                    {
                        ifdefDepth++;
                    }
                    else if (tokens[0].ToLower() == ".else" && failedIfdefDepth == ifdefDepth - 1)
                    {
                        ifdefCondition = true;
                    }
                    else if (tokens[0].ToLower() == ".endif")
                    {
                        ifdefDepth--;
                        if (ifdefDepth == failedIfdefDepth)
                        {
                            ifdefCondition = true;
                        }
                    }

                    return;
                }

                switch (tokens[0].ToLower())
                {
                // Built-in directives
                case ".ramsection": {
                    context = "RAMSECTION";
                    // Find the last token which specifies the name
                    int tokenIndex = 1;
                    while (tokens[tokenIndex][tokens[tokenIndex].Length - 1] != '"')
                    {
                        tokenIndex++;
                    }
                    tokenIndex++;

                    while (tokenIndex < tokens.Length)
                    {
                        if (tokens[tokenIndex] == "BANK")
                        {
                            tokenIndex++;
                            bank = Project.EvalToInt(tokens[tokenIndex++]);
                        }
                        else if (tokens[tokenIndex] == "SLOT")
                        {
                            tokenIndex++;
                            string slotString = tokens[tokenIndex++];
                            int    slot       = Project.EvalToInt(slotString);
                            if (slot == 2)
                            {
                                address = 0xc000;
                            }
                            else       // Assuming slot >= 3
                            {
                                address = 0xd000;
                            }
                        }
                    }
                    break;
                }

                case ".ends":
                    if (context == "RAMSECTION")
                    {
                        context = "";
                    }
                    break;

                case ".enum":
                    context = "ENUM";
                    address = Project.EvalToInt(tokens[1]);
                    break;
                // Not supported: "DESC" (descreasing order)

                case ".ende":
                    if (context == "ENUM")
                    {
                        context = "";
                    }
                    break;

                case ".define":
                {
                    if (tokens.Length < 3)
                    {
                        log.Debug(warningString + "Expected .DEFINE to have a string and a value.");
                        break;
                    }
                    string value = "";
                    for (int j = 2; j < tokens.Length; j++)
                    {
                        value += tokens[j];
                        value += " ";
                    }
                    value = value.Trim();
                    AddDefinition(tokens[1], value);
                    break;
                }

                case ".ifdef":
                    if (tokens.Length < 2)
                    {
                        log.Warn(warningString + "Expected .IFDEF to have a value.");
                        break;
                    }
                    ifdefDepth++;
                    if (Project.GetDefinition(tokens[1]) != null)
                    {
                        ifdefCondition = true;
                    }
                    else
                    {
                        ifdefCondition   = false;
                        failedIfdefDepth = ifdefDepth - 1;
                    }
                    break;

                case ".else":
                    if (ifdefDepth == 0)
                    {
                        log.Warn(warningString + "Expected .IFDEF before .ENDIF.");
                        break;
                    }
                    ifdefCondition = false;
                    break;

                case ".endif":
                    if (ifdefDepth == 0)
                    {
                        log.Warn(warningString + "Expected .IFDEF before .ENDIF.");
                        break;
                    }
                    ifdefDepth--;
                    break;

                default:
                {
                    bool isData = ParseData(tokens, spacing);

                    // In ramsections or enums, assume any unidentifiable data is a label.
                    // Technically this should be the case in any context, but it's more
                    // useful for the parser to tell me what it doesn't understand.
                    if (!isData && (tokens[0][tokens[0].Length - 1] == ':' || context == "RAMSECTION" || context == "ENUM"))
                    {
                        // Label
                        string s = tokens[0];
                        if (tokens[0][tokens[0].Length - 1] == ':')
                        {
                            s = tokens[0].Substring(0, tokens[0].Length - 1);
                        }

                        FileComponent addedComponent;
                        if (context == "RAMSECTION" || context == "ENUM")
                        {
                            AddDefinition(s, address.ToString());
                            if (context == "RAMSECTION")
                            {
                                AddDefinition(":" + s, bank.ToString());
                            }
                            PopFileStructure();
                            StringFileComponent sc = new StringFileComponent(this, tokens[0], spacing);
                            fileStructure.Add(sc);
                            fileStructureComments.Add(comment);
                            addedComponent = sc;
                        }
                        else
                        {
                            Label label = new Label(this, s, spacing);
                            AddLabelAndPopFileStructure(label);
                            addedComponent = label;
                        }
                        if (tokens.Length > 1)           // There may be data directly after the label
                        {
                            string[]   tokens2  = new string[tokens.Length - 1];
                            List <int> spacing2 = new List <int>();

                            addedComponent.EndsLine = false;

                            // Add raw string to file structure, it'll be removed if a better
                            // representation is found
                            fileStructure.Add(new StringFileComponent(
                                                  this, line.Substring(tokenStartIndices[1]), spacing2));
                            fileStructureComments.Add(comment);

                            for (int j = 1; j < tokens.Length; j++)
                            {
                                tokens2[j - 1] = tokens[j];
                            }
                            for (int j = 1; j < spacing.Count; j++)
                            {
                                spacing2.Add(spacing[j]);
                            }
                            if (!ParseData(tokens2, spacing2))
                            {
                                log.Debug(warningString + "Error parsing line.");
                            }
                        }
                    }
                    else
                    {
                        // Unknown data
                        log.Debug(warningString + "Did not understand \"" + tokens[0] + "\".");
                    }
                }
                break;
                }
            }
        }
示例#2
0
        void ParseLine(string pureLine, int i, List<FileComponent> fileStructure, List<string> fileStructureComments)
        {
            string[] split = pureLine.Split(';');
            string line = split[0];
            string comment = pureLine.Substring(split[0].Length);
            string warningString = "WARNING while parsing \"" + Filename + "\": Line " + (i+1) + ": ";

            // Helper functions

            Action<FileComponent,string> AddComponent = (component, c) => {
                fileStructure.Add(component);
                fileStructureComments.Add(c);
                if (component is Label)
                    AddLabelToDictionaries(component as Label);
            };
            Action<Label> AddLabelAndPopFileStructure = (label) => {
                fileStructure.RemoveAt(fileStructure.Count-1);
                string c = fileStructureComments[fileStructureComments.Count-1];
                fileStructureComments.RemoveAt(fileStructureComments.Count-1);
                AddComponent(label, c);
            };
            Action<Data> AddDataAndPopFileStructure = (data) => {
                fileStructure.RemoveAt(fileStructure.Count-1);
                string c = fileStructureComments[fileStructureComments.Count-1];
                fileStructureComments.RemoveAt(fileStructureComments.Count-1);
                AddComponent(data, c);
            };
            Action PopFileStructure = () => {
                fileStructure.RemoveAt(fileStructure.Count-1);
                fileStructureComments.RemoveAt(fileStructureComments.Count-1);
            };

            // Sub-function: returns true if a meaning for the token was found.
            Func<string[],IList<int>,bool> ParseData = (fTokens,fSpacing) =>
            {
                List<string> standardValues = new List<string>();

                // Variables used for some of the goto's
                int size=-1;

                for (int j = 1; j < fTokens.Length; j++)
                    standardValues.Add(fTokens[j]);

                switch (fTokens[0].ToLower()) {
                    case ".incbin":
                        {
                            Data d = new Data(Project, fTokens[0], standardValues, -1,
                                    this, fSpacing);
                            AddDataAndPopFileStructure(d);
                        }
                        break;
                    case ".dw":
                        if (context == "RAMSECTION")
                            break;
                        if (fTokens.Length < 2) {
                            log.Warn(warningString + "Expected .DW to have a value.");
                            break;
                        }
                        size = 2;
                        goto arbitraryLengthData;
                    case ".db":
                        if (context == "RAMSECTION")
                            break;
                        if (fTokens.Length < 2) {
                            log.Warn(warningString + "Expected .DB to have a value.");
                            break;
                        }
                        size = 1;
                        goto arbitraryLengthData;
                    case "dwbe":
                        if (fTokens.Length < 2) {
                            log.Warn(warningString + "Expected dwbe to have a value.");
                            break;
                        }
                        size = 2;
                        goto arbitraryLengthData;
                    case "dbrev":
                        if (fTokens.Length < 2) {
                            log.Warn(warningString + "Expected dbrev to have a value.");
                            break;
                        }
                        size = 1;
                        goto arbitraryLengthData;
            arbitraryLengthData:
                        PopFileStructure();
                        for (int j=1; j<fTokens.Length; j++) { // Each value is added as individual data
                            string[] values = { fTokens[j] };
                            List<int> newfSpacing = new List<int> {fSpacing[0],fSpacing[j],0};
                            if (j == fTokens.Length-1)
                                newfSpacing[2] = fSpacing[j+1];

                            Data d = new Data(Project, fTokens[0], values, size,
                                    this, newfSpacing);
                            if (j != fTokens.Length-1)
                                d.EndsLine = false;
                            if (j != 1)
                                d.PrintCommand = false;
                            AddComponent(d, "");
                        }
                        break;
                    case "db":
                        if (context != "RAMSECTION")
                            goto default;
                        address++;
                        break;
                    case "dw":
                        if (context != "RAMSECTION")
                            goto default;
                        address+=2;
                        break;
                    case "dsb":
                        if (context != "RAMSECTION")
                            goto default;
                        address += Project.EvalToInt(fTokens[1]);
                        break;
                    case "dsw":
                        if (context != "RAMSECTION")
                            goto default;
                        address += Project.EvalToInt(fTokens[1])*2;
                        break;

                    case "m_animationloop":
                        {
                            Data d = new Data(Project, fTokens[0], standardValues, 2,
                                this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_rgb16":
                        if (fTokens.Length != 4) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 3 parameters");
                            break;
                        }
                        {
                            Data d = new RgbData(Project, fTokens[0], standardValues,
                                    this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_gfxheader":
                    case "m_gfxheaderforcemode":
                        if (fTokens.Length < 4 || fTokens.Length > 5) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 3-4 parameters");
                            break;
                        }
                        {
                            Data d = new GfxHeaderData(Project, fTokens[0], standardValues,
                                    this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_paletteheaderbg":
                    case "m_paletteheaderspr":
                        if (fTokens.Length != 5) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 4 parameters");
                            break;
                        }
                        {
                            Data d = new PaletteHeaderData(Project, fTokens[0], standardValues,
                                    this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_tilesetheader":
                        if (fTokens.Length != 6) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 5 parameters");
                            break;
                        }
                        {
                            Data d = new TilesetHeaderData(Project, fTokens[0], standardValues,
                                    this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_tilesetdata":
                        if (fTokens.Length != 2) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 1 parameter");
                            break;
                        }
                        {
                            Stream file = Project.GetBinaryFile("tilesets/" + fTokens[1] + ".bin");
                            Data d = new Data(Project, fTokens[0], standardValues,
                                    (Int32)file.Length, this, fSpacing);
                            AddDataAndPopFileStructure(d);
                            break;
                        }
                    case "m_roomlayoutdata":
                        if (fTokens.Length != 2) {
                            log.Warn(warningString + "Expected " + fTokens[0] + " to take 1 parameter");
                            break;
                        }
                        {
                            Label l = new Label(this, fTokens[1]);
                            l.Fake = true;
                            AddLabelAndPopFileStructure(l);
                            Data d = new Data(Project, fTokens[0], standardValues, -1,
                                    this, fSpacing);
                            AddComponent(d, "");
                            break;
                        }

                    default:
                        {
                            Data d = null;
                            // Try object commands
                            for (int j=0; j<ObjectGroup.ObjectCommands.Length; j++) {
                                string s = ObjectGroup.ObjectCommands[j];

                                if (s.ToLower() == fTokens[0].ToLower()) {
                                    int minParams = ObjectGroup.ObjectCommandMinParams[j];
                                    int maxParams = ObjectGroup.ObjectCommandMaxParams[j];

                                    if (minParams == -1) minParams = maxParams;
                                    if (maxParams == -1) maxParams = minParams;
                                    if (fTokens.Length-1 < minParams || fTokens.Length-1 > maxParams) {
                                      log.Warn(warningString + "Expected " + fTokens[0] + " to take " +
                                          minParams + "-" + maxParams + "parameter(s)");
                                      break;
                                    }

                                    var objectType = (ObjectType)j;

                                    d = new ObjectData(Project, fTokens[0], standardValues,
                                        this, fSpacing, objectType);
                                    break;
                                }
                            }
                            // Try warp sources
                            foreach (string s in WarpSourceData.WarpCommands) {
                                if (s.ToLower() == fTokens[0].ToLower()) {
                                    d = new WarpSourceData(Project, fTokens[0], standardValues,
                                            this, fSpacing);
                                }
                            }
                            // Try warp dest
                            if (WarpDestData.WarpCommand.ToLower() == fTokens[0].ToLower()) {
                                d = new WarpDestData(Project, fTokens[0], standardValues,
                                        this, fSpacing);
                            }

                            if (d != null) {
                                AddDataAndPopFileStructure(d);
                                break;
                            }
                            return false;
                        }
                }
                return true;
            };

            // Add raw string to file structure, it'll be removed if
            // a better representation is found
            fileStructure.Add(new StringFileComponent(this, line, null));
            fileStructureComments.Add(comment);

            if (line.Trim().Length == 0)
                return;

            // TODO: split tokens more intelligently, ie: recognize this as one token: $8000 | $03
            //string[] tokens = line.Split(new char[] { ' ', '\t'} );
            string[] tokens = Regex.Split(line.Trim(), @"\s+");

            List<int> spacing = new List<int>();
            int[] tokenStartIndices = new int[tokens.Length];
            {
                // Generate "spacing" list, keeps track of whitespace
                // between arguments (+'ve = spaces, -'ve = tabs)
                int index = 0;

                for (int j=0; j<tokens.Length+1; j++) {
                    int spaces=0;
                    while (index < line.Length && (line[index] == ' ' || line[index] == '\t')) {
                        if (line[index] == ' ' && spaces >= 0) spaces++;
                        else if (line[index] == '\t' && spaces <= 0) spaces--;
                        index++;
                    }
                    if (j<tokens.Length)
                        tokenStartIndices[j] = index;
                    spacing.Add(spaces);
                    while (index < line.Length && line[index] != ' ' && line[index] != '\t')
                        index++;
                }
            }

            string value;

            if (tokens.Length > 0) {
                switch (tokens[0].ToLower()) {
                    // Built-in directives
                    case ".ramsection":
                        {
                            context = "RAMSECTION";
                            // Find the last token which specifies the name
                            int tokenIndex = 1;
                            while (tokens[tokenIndex][tokens[tokenIndex].Length-1] != '"')
                                tokenIndex++;
                            tokenIndex++;

                            while (tokenIndex < tokens.Length) {
                                if (tokens[tokenIndex] == "BANK") {
                                    tokenIndex++;
                                    bank = Project.EvalToInt(tokens[tokenIndex++]);
                                }
                                else if (tokens[tokenIndex] == "SLOT") {
                                    tokenIndex++;
                                    string slotString = tokens[tokenIndex++];
                                    int slot = Project.EvalToInt(slotString);
                                    if (slot == 2)
                                        address = 0xc000;
                                    else { // Assuming slot >= 3
                                        address = 0xd000;
                                    }
                                }
                            }
                            break;
                        }
                    case ".ends":
                        if (context == "RAMSECTION")
                            context = "";
                        break;

                    case ".define":
                        if (tokens.Length < 3) {
                            log.Debug(warningString + "Expected .DEFINE to have a string and a value.");
                            break;
                        }
                        value = "";
                        for (int j = 2; j < tokens.Length; j++) {
                            value += tokens[j];
                            value += " ";
                        }
                        value = value.Trim();
                        AddDefinition(tokens[1], value);
                        break;

                    default:
                        if (tokens[0][tokens[0].Length - 1] == ':') {
                            // Label
                            string s = tokens[0].Substring(0, tokens[0].Length - 1);
                            FileComponent addedComponent;
                            if (context == "RAMSECTION") {
                                AddDefinition(s, address.ToString());
                                AddDefinition(":"+s, bank.ToString());
                                PopFileStructure();
                                StringFileComponent sc = new StringFileComponent(this, tokens[0], spacing);
                                fileStructure.Add(sc);
                                fileStructureComments.Add(comment);
                                addedComponent = sc;
                            }
                            else {
                                Label label = new Label(this,s,spacing);
                                AddLabelAndPopFileStructure(label);
                                addedComponent = label;
                            }
                            if (tokens.Length > 1) { // There may be data directly after the label
                                string[] tokens2 = new string[tokens.Length-1];
                                List<int> spacing2 = new List<int>();

                                addedComponent.EndsLine = false;

                                // Add raw string to file structure, it'll
                                // be removed if a better representation is
                                // found
                                fileStructure.Add(new StringFileComponent(
                                            this, line.Substring(tokenStartIndices[1]), spacing2));
                                fileStructureComments.Add(comment);

                                for (int j=1; j<tokens.Length; j++)
                                    tokens2[j-1] = tokens[j];
                                for (int j=1; j<spacing.Count; j++)
                                    spacing2.Add(spacing[j]);
                                if (!ParseData(tokens2, spacing2)) {
                                    log.Debug(warningString + "Error parsing line.");
                                }
                            }
                        } else {
                            if (!ParseData(tokens, spacing)) {
                                // Unknown data
                                log.Debug(warningString + "Did not understand \"" + tokens[0] + "\".");
                            }
                        }
                        break;
                }
            }
        }