Get commented typing working

By creating a class inheriting from SaneTsvRecord with properties
decorated with SaneTsvColumn attributes

SaneTsv/SaneTsv.cs

@@ -1,7 +1,19 @@
-using System.Text;
+using System.Reflection;
+using System.Text;
 
 namespace NathanMcRae;
 
+public class Tsv<T> where T : SaneTsv.TsvRecord
+{
+  public virtual List<T> Records { get; set; }
+}
+
+public class CommentedTsv<T>: Tsv<T> where T : SaneTsv.TsvRecord
+{
+  public override List<T> Records { get; set; }
+  public string FileComment { get; set; } = null;
+}
+
 /// <summary>
 /// Sane Tab-Separated Values
 /// </summary>
@@ -34,8 +46,6 @@ public class SaneTsv
   // TODO: We need to be able to update all these in tandem somehow
   public string[] ColumnNames { get; protected set; }
   public Type[] ColumnTypes { get; protected set; }
-  public List<SaneTsvRecord> Records { get; protected set; }
-  public string FileComment { get; protected set; } = null;
   protected static bool? _littleEndian = null;
   public static bool LittleEndian
   {
@@ -49,28 +59,55 @@ public class SaneTsv
     }
   }
 
-  public static SaneTsv ParseSimpleTsv(byte[] inputBuffer)
+  public static Tsv<T> ParseSimpleTsv<T>(byte[] inputBuffer) where T : TsvRecord, new()
   {
-    return Parse(inputBuffer, FormatType.SIMPLE_TSV);
+    return Parse<T>(inputBuffer, FormatType.SIMPLE_TSV);
   }
 
-  public static SaneTsv ParseTypedTsv(byte[] inputBuffer)
+  public static Tsv<T> ParseTypedTsv<T>(byte[] inputBuffer) where T : TsvRecord, new()
   {
-    return Parse(inputBuffer, FormatType.TYPED_TSV);
+    return Parse<T>(inputBuffer, FormatType.TYPED_TSV);
   }
 
-  public static SaneTsv ParseCommentedTsv(byte[] inputBuffer)
+  public static CommentedTsv<T> ParseCommentedTsv<T>(byte[] inputBuffer) where T : CommentedTsvRecord, new()
   {
-    return Parse(inputBuffer, FormatType.COMMENTED_TSV);
+    // TODO: add the file comment?
+    return  (CommentedTsv<T>)Parse<T>(inputBuffer, FormatType.COMMENTED_TSV);
   }
 
   // TODO: Have parsing errors include line / column #
-  protected static SaneTsv Parse(byte[] inputBuffer, FormatType format)
+  protected static Tsv<T> Parse<T>(byte[] inputBuffer, FormatType format) where T : TsvRecord, new()
   {
-    var parsed = new SaneTsv();
+    Tsv<T> parsed;
-    parsed.ColumnNames = new string[] { };
+    if (format == FormatType.COMMENTED_TSV)
-    parsed.ColumnTypes = new Type[] { };
+    {
-    parsed.Records = new List<SaneTsvRecord>();
+      parsed = new CommentedTsv<T>();
+    }
+    else
+    {
+      parsed = new Tsv<T>();
+    }
+    parsed.Records = new List<T>();
+
+    var headerTypes = new List<Type>();
+    var headerNames = new List<string>();
+    var headerPropertyInfos = new List<PropertyInfo>();
+    int columnCount = 0;
+
+    foreach (PropertyInfo property in typeof(T).GetProperties())
+    {
+      TypedTsvColumnAttribute attribute = (TypedTsvColumnAttribute)Attribute.GetCustomAttribute(property, typeof(TypedTsvColumnAttribute));
+      if (attribute == null)
+      {
+        continue;
+      }
+
+      headerNames.Add(attribute.ColumnName ?? property.Name);
+      headerTypes.Add(attribute.ColumnType ?? GetColumnFromType(property.PropertyType));
+      headerPropertyInfos.Add(property);
+      // TODO: Check that the property type and given column type are compatible
+      columnCount++;
+    }
 
     var fieldBytes = new List<byte>();
     var fields = new List<byte[]>();
@@ -129,9 +166,6 @@ public class SaneTsv
 
           numFields = fields.Count;
 
-          parsed.ColumnNames = new string[numFields];
-          parsed.ColumnTypes = new Type[numFields];
-
           int numTypesBlank = 0;
 
           for (int j = 0; j < fields.Count; j++)
@@ -213,17 +247,33 @@ public class SaneTsv
             }
 
             // TODO: Check column name uniqueness
+            // TODO: Allow lax parsing (only worry about parsing columns that are given in the specifying type
 
-            parsed.ColumnNames[j] = columnName;
+            if (headerNames[j] != columnName)
-            parsed.ColumnTypes[j] = type;
+            {
+              throw new Exception($"Column {j} has name {columnName}, but expected {headerNames[j]}");
+            }
+
+            if (headerTypes[j] != type)
+            {
+              throw new Exception($"Column {j} has type {type}, but expected {headerTypes[j]}");
+            }
           }
 
           if (currentComment.Length > 0)
           {
-            parsed.FileComment = currentComment.ToString();
+            if (parsed is CommentedTsv<T> commentedParsed)
-            currentComment.Clear();
+            {
+              commentedParsed.FileComment = currentComment.ToString();
+              currentComment.Clear();
+            }
+            else
+            {
+              throw new Exception("Found a file comment, but parser wasn't expecting a comment");
+            }
           }
           
+
           fields.Clear();
         }
         else if (numFields != fields.Count)
@@ -238,7 +288,7 @@ public class SaneTsv
             comment = currentComment.ToString();
             currentComment.Clear();
           }
-          parsed.Records.Add(new SaneTsvRecord(parsed, ParseCurrentRecord(parsed, fields, line), comment, line));
+          parsed.Records.Add(ParseCurrentRecord<T>(headerTypes.ToArray(), headerPropertyInfos.ToArray(), fields, comment, line));
           fields.Clear();
         }
 
@@ -298,28 +348,46 @@ public class SaneTsv
         comment = currentComment.ToString();
         currentComment.Clear();
       }
-      parsed.Records.Add(new SaneTsvRecord(parsed, ParseCurrentRecord(parsed, fields, line), comment, line));
+      parsed.Records.Add(ParseCurrentRecord<T>(headerTypes.ToArray(), headerPropertyInfos.ToArray(), fields, comment, line));
       fields.Clear();
     }
 
     return parsed;
   }
 
-  /// <summary>
+  protected static T ParseCurrentCommentedRecord<T> (Type[] columnTypes, PropertyInfo[] properties, List<byte[]> fields, string comment, int line) where T : CommentedTsvRecord, new()
-  /// Note: this modifies 'parsed'
-  /// </summary>
-  protected static object[] ParseCurrentRecord(SaneTsv parsed, List<byte[]> fields, int line)
   {
-    var parsedFields = new object[fields.Count];
+    return (T)ParseCurrentRecord<T>(columnTypes, properties, fields, comment, line);
+  }
+
+  protected static T ParseCurrentRecord<T>(Type[] columnTypes, PropertyInfo[] properties, List<byte[]> fields, string comment, int line) where T : TsvRecord, new()
+  {
+    T record = new T();
+
+    if (record is CommentedTsvRecord commentedRecord)
+    {
+      commentedRecord.Comment = comment;
+    }
+    else if (comment != null)
+    {
+      throw new Exception($"Found comment for line {line}, but format does not support comments");
+    }
+    
+    record.Line = line;
+
     for (int j = 0; j < fields.Count; j++)
     {
       // All other types require the content to be UTF-8. Binary fields can ignore that.
-      if (parsed.ColumnTypes[j] == typeof(BinaryType))
+      if (columnTypes[j] == typeof(BinaryType))
       {
-        parsedFields[j] = fields[j];
+        // TODO: Use faster method for property setting
+        // e.g. https://blog.marcgravell.com/2012/01/playing-with-your-member.html
+        // or https://stackoverflow.com/questions/1027980/improving-performance-reflection-what-alternatives-should-i-consider
+        // or https://stackoverflow.com/questions/12767091/why-are-propertyinfo-setvalue-and-getvalue-so-slow
+        properties[j].SetValue(record, fields[j]);
         continue;
       }
-      else if (parsed.ColumnTypes[j] == typeof(Float32LEType))
+      else if (columnTypes[j] == typeof(Float32LEType))
       {
         byte[] floatBytes;
         if (!LittleEndian)
@@ -334,11 +402,11 @@ public class SaneTsv
         {
           floatBytes = fields[j];
         }
-        parsedFields[j] = BitConverter.ToSingle(floatBytes, 0);
+        properties[j].SetValue(record, BitConverter.ToSingle(floatBytes, 0));
 
         continue;
       }
-      else if (parsed.ColumnTypes[j] == typeof(Float64LEType))
+      else if (columnTypes[j] == typeof(Float64LEType))
       {
         byte[] floatBytes;
         if (!LittleEndian)
@@ -353,7 +421,7 @@ public class SaneTsv
         {
           floatBytes = fields[j];
         }
-        parsedFields[j] = BitConverter.ToDouble(floatBytes, 0);
+        properties[j].SetValue(record, BitConverter.ToDouble(floatBytes, 0));
 
         continue;
       }
@@ -370,11 +438,11 @@ public class SaneTsv
 
       // TODO: Add checking for numeric types format
 
-      if (parsed.ColumnTypes[j] == typeof(StringType))
+      if (columnTypes[j] == typeof(StringType))
       {
-        parsedFields[j] = fieldString;
+        properties[j].SetValue(record, fieldString);
       }
-      else if (parsed.ColumnTypes[j] == typeof(BooleanType))
+      else if (columnTypes[j] == typeof(BooleanType))
       {
         bool parsedBool;
         if (fieldString == "TRUE")
@@ -390,9 +458,9 @@ public class SaneTsv
           throw new Exception($"Field {j} on line {line} is not valid boolean. Must be 'TRUE' or 'FALSE' exactly");
         }
 
-        parsedFields[j] = parsedBool;
+        properties[j].SetValue(record, parsedBool);
       }
-      else if (parsed.ColumnTypes[j] == typeof(Float32Type))
+      else if (columnTypes[j] == typeof(Float32Type))
       {
         float parsedFloat;
         if (!float.TryParse(fieldString, out parsedFloat))
@@ -411,9 +479,9 @@ public class SaneTsv
           }
         }
 
-        parsedFields[j] = parsedFloat;
+        properties[j].SetValue(record, parsedFloat);
       }
-      else if (parsed.ColumnTypes[j] == typeof(Float64Type))
+      else if (columnTypes[j] == typeof(Float64Type))
       {
         double parsedDouble;
         if (!double.TryParse(fieldString, out parsedDouble))
@@ -432,51 +500,51 @@ public class SaneTsv
           }
         }
 
-        parsedFields[j] = parsedDouble;
+        properties[j].SetValue(record, parsedDouble);
       }
-      else if (parsed.ColumnTypes[j] == typeof(UInt32Type))
+      else if (columnTypes[j] == typeof(UInt32Type))
       {
         if (!UInt32.TryParse(fieldString, out UInt32 parsedUInt32))
         {
           throw new Exception($"Field {j} on line {line} is not valid UInt32");
         }
 
-        parsedFields[j] = parsedUInt32;
+        properties[j].SetValue(record, parsedUInt32);
       }
-      else if (parsed.ColumnTypes[j] == typeof(UInt64Type))
+      else if (columnTypes[j] == typeof(UInt64Type))
       {
         if (!UInt64.TryParse(fieldString, out UInt64 parsedUInt64))
         {
           throw new Exception($"Field {j} on line {line} is not valid UInt64");
         }
 
-        parsedFields[j] = parsedUInt64;
+        properties[j].SetValue(record, parsedUInt64);
       }
-      else if (parsed.ColumnTypes[j] == typeof(Int32Type))
+      else if (columnTypes[j] == typeof(Int32Type))
       {
         if (!Int32.TryParse(fieldString, out Int32 parsedInt32))
         {
           throw new Exception($"Field {j} on line {line} is not valid Int32");
         }
 
-        parsedFields[j] = parsedInt32;
+        properties[j].SetValue(record, parsedInt32);
       }
-      else if (parsed.ColumnTypes[j] == typeof(Int64Type))
+      else if (columnTypes[j] == typeof(Int64Type))
       {
         if (!Int64.TryParse(fieldString, out Int64 parsedInt64))
         {
           throw new Exception($"Field {j} on line {line} is not valid Int64");
         }
 
-        parsedFields[j] = parsedInt64;
+        properties[j].SetValue(record, parsedInt64);
       }
       else
       {
-        throw new Exception($"Unexpected type {parsed.ColumnTypes[j]}");
+        throw new Exception($"Unexpected type {columnTypes[j]}");
       }
     }
 
-    return parsedFields;
+    return record;
   }
 
   public static byte[] SerializeSimpleTsv(IList<string> header, IList<IList<string>> data)
@@ -672,13 +740,49 @@ public class SaneTsv
     }
   }
 
-  public static byte[] SerializeTypedTsv(IList<Type> headerTypes, IList<string> headerNames, IList<IList<object>> data)
+  public static byte[] SerializeSimpleTsv<T>(IList<T> data) where T : TsvRecord
+  {
+    return SerializeTsv<T>(data, FormatType.TYPED_TSV);
+  }
+
+  public static byte[] SerializeTypedTsv<T>(IList<T> data) where T : TsvRecord
+  {
+    return SerializeTsv<T>(data, FormatType.TYPED_TSV);
+  }
+
+  public static byte[] SerializeCommentedTsv<T>(IList<T> data, string fileComment) where T : CommentedTsvRecord
+  {
+    return SerializeTsv<T>(data, FormatType.COMMENTED_TSV);
+  }
+
+  protected static byte[] SerializeTsv<T>(IList<T> data, FormatType tsvFormat) where T : TsvRecord
   {
     var bytes = new List<byte>();
 
-    if (headerNames.Count != headerTypes.Count)
+    var headerTypes = new List<Type>();
+    var headerNames = new List<string>();
+    var headerPropertyInfos = new List<PropertyInfo>();
+    int columnCount = 0;
+
+    foreach (PropertyInfo property in typeof(T).GetProperties())
     {
-      throw new ArgumentException($"headerTypes length ({headerTypes.Count}) does not match headerNames length ({headerNames.Count})");
+      TsvColumnAttribute attribute = (TsvColumnAttribute)Attribute.GetCustomAttribute(property, typeof(TsvColumnAttribute));
+      if (attribute == null)
+      {
+        continue;
+      }
+
+      string headerName = attribute.ColumnName ?? property.Name;
+      headerNames.Add(headerName);
+      Type headerType = attribute.ColumnType ?? GetColumnFromType(property.PropertyType);
+      if (tsvFormat == FormatType.SIMPLE_TSV && headerType != typeof(StringType))
+      {
+        throw new Exception($"Serializing Simple TSV requires all columns be of type string, but column '{headerName}' has type '{headerType}'");
+      }
+      headerTypes.Add(headerType);
+      headerPropertyInfos.Add(property);
+      // TODO: Check that the property type and given column type are compatible
+      columnCount++;
     }
 
     // Serialize header
@@ -745,8 +849,10 @@ public class SaneTsv
     // Serialize data
     for (int i = 0; i < data.Count; i++)
     {
-      for (int j = 0; j < data[i].Count; j++)
+      for (int j = 0; j < columnCount; j++)
       {
+        object datum = headerPropertyInfos[j].GetValue(data[i]);
+
         try
         {
           byte[] fieldEncoded = null;
@@ -755,16 +861,16 @@ public class SaneTsv
 
           if (headerTypes[j] == typeof(StringType))
           {
-            fieldEncoded = Encoding.UTF8.GetBytes((string)data[i][j]);
+            fieldEncoded = Encoding.UTF8.GetBytes((string)datum);
           }
           else if (headerTypes[j] == typeof(BooleanType))
           {
-            bytes.AddRange((bool)data[i][j] ? TrueEncoded : FalseEncoded);
+            bytes.AddRange((bool)datum ? TrueEncoded : FalseEncoded);
             skipEscaping = true;
           }
           else if (headerTypes[j] == typeof(Float32Type))
           {
-            if (data[i][j] is float f)
+            if (datum is float f)
             {
               if (float.IsNegativeInfinity(f))
               {
@@ -777,7 +883,7 @@ public class SaneTsv
               else
               {
                 // See https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings#round-trip-format-specifier-r
-                bytes.AddRange(Encoding.UTF8.GetBytes(((float)data[i][j]).ToString("G9")));
+                bytes.AddRange(Encoding.UTF8.GetBytes(((float)datum).ToString("G9")));
               }
             }
             else
@@ -790,11 +896,11 @@ public class SaneTsv
           {
             if (LittleEndian)
             {
-              fieldEncoded = BitConverter.GetBytes((float)data[i][j]);
+              fieldEncoded = BitConverter.GetBytes((float)datum);
             }
             else
             {
-              byte[] floatBytes = BitConverter.GetBytes((float)data[i][j]);
+              byte[] floatBytes = BitConverter.GetBytes((float)datum);
               fieldEncoded = new byte[sizeof(float)];
               for (int k = 0; k < sizeof(float); k++)
               {
@@ -804,7 +910,7 @@ public class SaneTsv
           }
           else if (headerTypes[j] == typeof(Float64Type))
           {
-            if (data[i][j] is double d)
+            if (datum is double d)
             {
               if (double.IsNegativeInfinity(d))
               {
@@ -830,11 +936,11 @@ public class SaneTsv
           {
             if (LittleEndian)
             {
-              fieldEncoded = BitConverter.GetBytes((double)data[i][j]);
+              fieldEncoded = BitConverter.GetBytes((double)datum);
             }
             else
             {
-              byte[] doubleBytes = BitConverter.GetBytes((double)data[i][j]);
+              byte[] doubleBytes = BitConverter.GetBytes((double)datum);
               fieldEncoded = new byte[sizeof(double)];
               for (int k = 0; k < sizeof(double); k++)
               {
@@ -844,27 +950,27 @@ public class SaneTsv
           }
           else if (headerTypes[j] == typeof(UInt32Type))
           {
-            bytes.AddRange(Encoding.UTF8.GetBytes(((UInt32)(int)data[i][j]).ToString()));
+            bytes.AddRange(Encoding.UTF8.GetBytes(((UInt32)datum).ToString()));
             skipEscaping = true;
           }
           else if (headerTypes[j] == typeof(UInt64Type))
           {
-            bytes.AddRange(Encoding.UTF8.GetBytes(((UInt64)(int)data[i][j]).ToString()));
+            bytes.AddRange(Encoding.UTF8.GetBytes(((UInt64)datum).ToString()));
             skipEscaping = true;
           }
           else if (headerTypes[j] == typeof(Int32Type))
           {
-            bytes.AddRange(Encoding.UTF8.GetBytes(((Int32)(int)data[i][j]).ToString()));
+            bytes.AddRange(Encoding.UTF8.GetBytes(((Int32)datum).ToString()));
             skipEscaping = true;
           }
           else if (headerTypes[j] == typeof(Int64Type))
           {
-            bytes.AddRange(Encoding.UTF8.GetBytes(((Int64)(int)data[i][j]).ToString()));
+            bytes.AddRange(Encoding.UTF8.GetBytes(((Int64)datum).ToString()));
             skipEscaping = true;
           }
           else if (headerTypes[j] == typeof(BinaryType))
           {
-            fieldEncoded = (byte[])data[i][j];
+            fieldEncoded = (byte[])datum;
           }
           else
           {
@@ -902,7 +1008,7 @@ public class SaneTsv
             }
           }
 
-          if (j < data[i].Count - 1)
+          if (j < columnCount - 1)
           {
             bytes.Add((byte)'\t');
           }
@@ -921,25 +1027,97 @@ public class SaneTsv
     return bytes.ToArray();
   }
 
-  public SaneTsvRecord this[int i] => Records[i];
+  public class SimpleTsvRecord
-
-  public class SaneTsvRecord
   {
-    public SaneTsv Parent { get; }
+    public string[] ColumnNames { get; }
     public string Comment { get; }
-    public object[] Fields { get; }
+    public string[] Fields { get; }
-    public int Line { get; }
+    public int? Line { get; }
 
-    public object this[string columnName] => Fields[Array.IndexOf(Parent.ColumnNames, columnName)];
+    public string this[string columnName] => Fields[Array.IndexOf(ColumnNames, columnName)];
+    public string this[int columnIndex] => Fields[columnIndex];
 
-    public object this[int columnIndex] => Fields[columnIndex];
+    public SimpleTsvRecord(string[] columnNames, string[] fields, string comment, int line)
-
-    public SaneTsvRecord(SaneTsv parent, object[] fields, string comment, int line)
     {
-      Parent = parent;
+      ColumnNames = columnNames;
       Fields = fields;
       Comment = comment;
       Line = line;
     }
   }
+
+  public class TsvRecord
+  {
+    public int? Line { get; set; }
+    public TsvRecord(int? line)
+    {
+      Line = line;
+    }
+
+    public TsvRecord() { }
+  }
+
+  public class CommentedTsvRecord : TsvRecord
+  {
+    public string Comment { get; set; }
+
+    public CommentedTsvRecord(string comment, int? line)
+    {
+      Comment = comment;
+      Line = line;
+    }
+
+    public CommentedTsvRecord() { }
+  }
+
+  public class TestRecord : CommentedTsvRecord
+  {
+    [TypedTsvColumn("my-column")]
+    public string MyColumn { get; set; }
+  }
+
+  // TODO: Add column ordering
+  public class TsvColumnAttribute : Attribute
+  {
+    public string ColumnName { get; }
+    public virtual Type ColumnType { get; }
+
+    public TsvColumnAttribute() 
+    {
+      ColumnType = typeof(StringType);
+    }
+    public TsvColumnAttribute(string columnName) 
+    {
+      ColumnType = typeof(StringType);
+      ColumnName = columnName;
+    }
+  }
+
+  // TODO: Add column ordering
+  public class TypedTsvColumnAttribute : TsvColumnAttribute
+  {
+    public override Type ColumnType { get; }
+
+    public TypedTsvColumnAttribute() { }
+
+    public TypedTsvColumnAttribute(string columnName) : base(columnName) { }
+
+    public TypedTsvColumnAttribute(string columnName, Type columnType) : base(columnName)
+    {
+      if (columnType.BaseType != typeof(ColumnType))
+      {
+        throw new Exception("Column type must inherit from SaneTsv.ColumnType");
+      }
+      ColumnType = columnType;
+    }
+
+    public TypedTsvColumnAttribute(Type columnType)
+    {
+      if (columnType.BaseType != typeof(ColumnType))
+      {
+        throw new Exception("Column type must inherit from SaneTsv.ColumnType");
+      }
+      ColumnType = columnType;
+    }
+  }
 }

SaneTsv/SaneTsvTest/Program.cs

@@ -1,145 +1,299 @@
 using NathanMcRae;
 using System.Text;
 
+internal class Program
 {
-  string testName = "Bool test";
+  public class TestRecord : SaneTsv.TsvRecord
-  string testString1 = "column1:ty\\#pe:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+  {
-    "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+    [SaneTsv.TypedTsvColumn("string-test")]
-    "\nFALSE\tnother\tno\\ther";
+    public string StringTest { get; set; }
 
-  SaneTsv parsed = SaneTsv.ParseTypedTsv(Encoding.UTF8.GetBytes(testString1));
+    [SaneTsv.TypedTsvColumn("bool-test")]
-  if (parsed.Records[0]["column1:ty#pe"] is bool result && result)
+    public bool BoolTest { get; set; }
-  {
+
-    Console.WriteLine($"Passed {testName}");
+    [SaneTsv.TypedTsvColumn("float32-test")]
+    public float Float32Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("float32-le-test", typeof(SaneTsv.Float32LEType))]
+    public float Float32LETest { get; set; }
+
+    [SaneTsv.TypedTsvColumn("float64-test")]
+    public double Float64Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("float64-le-test", typeof(SaneTsv.Float64LEType))]
+    public double Float64LETest { get; set; }
+
+    [SaneTsv.TypedTsvColumn("uint32-test")]
+    public UInt32 UInt32Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("uint64-test")]
+    public UInt64 UInt64Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("int32-test")]
+    public Int32 Int32Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("int64-test")]
+    public Int64 Int64Test { get; set; }
+
+    [SaneTsv.TypedTsvColumn("binary-test")]
+    public byte[] BinaryTest { get; set; }
+
+    public TestRecord(string stringTest, bool boolTest, float float32Test, float float32LETest, double float64Test, double float64LETest, UInt32 uInt32Test, UInt64 uInt64Test, Int32 int32Test, Int64 int64Test, byte[] binaryTest)
+    {
+      StringTest = stringTest;
+      BoolTest = boolTest;
+      Float32Test = float32Test;
+      Float32LETest = float32LETest;
+      Float64Test = float64Test;
+      Float64LETest = float64LETest;
+      UInt32Test = uInt32Test;
+      UInt64Test = uInt64Test;
+      Int32Test = int32Test;
+      Int64Test = int64Test;
+      BinaryTest = binaryTest;
+    }
+
+    public TestRecord() { }
   }
-  else
+
+  public class BoolTestRecord : SaneTsv.CommentedTsvRecord
   {
-    Console.WriteLine($"Failed {testName}");
+    [SaneTsv.TypedTsvColumn("column1:ty#pe")]
+    public bool Column1 { get; set; }
+
+    [SaneTsv.TypedTsvColumn]
+    public byte[] column2 { get; set; }
+
+    [SaneTsv.TypedTsvColumn("columnthree\nyep")]
+    public string Column3 { get; set; }
+  }
+
+  public class BoolTestRecord2 : SaneTsv.CommentedTsvRecord
+  {
+    [SaneTsv.TypedTsvColumn("column1:type")]
+    public bool Column1 { get; set; }
+
+    [SaneTsv.TypedTsvColumn]
+    public byte[] column2 { get; set; }
+
+    [SaneTsv.TypedTsvColumn("columnthree\nyep")]
+    public string Column3 { get; set; }
+  }
+
+  public class SerdeTestRecord : SaneTsv.CommentedTsvRecord
+  {
+    [SaneTsv.TypedTsvColumn("column1")]
+    public bool Column1 { get; set; }
+
+    [SaneTsv.TypedTsvColumn]
+    public byte[] column2 { get; set; }
+
+    [SaneTsv.TypedTsvColumn("columnthree\nyep")]
+    public string Column3 { get; set; }
+  }
+
+  public class FloatTestRecord : SaneTsv.CommentedTsvRecord
+  {
+    [SaneTsv.TypedTsvColumn("somefloat")]
+    public double SomeFloat { get; set; }
+
+    [SaneTsv.TypedTsvColumn("binfloat", typeof(SaneTsv.Float64LEType))]
+    public double BinFloat { get; set; }
+  }
+
+  private static void Main(string[] args)
+  {
+    {
+      string testName = "Bool test";
+      string testString1 = "column1:ty\\#pe:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+        "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+        "\nFALSE\tnother\tno\\ther";
+
+      Tsv<BoolTestRecord> parsed = SaneTsv.ParseTypedTsv<BoolTestRecord>(Encoding.UTF8.GetBytes(testString1));
+      if (parsed.Records[0].Column1)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+      else
+      {
+        Console.WriteLine($"Failed {testName}");
+      }
+    }
+
+    {
+      string testName = "Bad bool test";
+      try
+      {
+        string testString1 = "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+          "\nTUE\tvalue\\\\t\0woo\tvaluetrhee" +
+          "\nFALSE\tnother\tno\\ther";
+
+        Tsv<BoolTestRecord> parsed = SaneTsv.ParseTypedTsv<BoolTestRecord>(Encoding.UTF8.GetBytes(testString1));
+        Console.WriteLine($"Failed {testName}");
+      }
+      catch (Exception)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+
+    }
+
+    {
+      string testName = "Comment test";
+      string testString1 = "#This is a file comment\n" +
+        "#One more file comment line\n" +
+        "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+        "\n#This is a comment" +
+        "\n#Another comment line" +
+        "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+        "\nFALSE\tnother\tno\\ther";
+
+      CommentedTsv<BoolTestRecord2> parsed = SaneTsv.ParseCommentedTsv<BoolTestRecord2>(Encoding.UTF8.GetBytes(testString1));
+    }
+
+    //{
+    //  string testName = "Serde test";
+    //  string testString1 = "column1\tcolumn2\tcolumnthree\\nyep" +
+    //    "\nTRUE\tvalue\\\\twoo\tvaluetrhee" +
+    //    "\nFALSE\tnother\tno\\ther";
+
+    //  Tsv<SerdeTestRecord> parsed = SaneTsv.ParseSimpleTsv<SerdeTestRecord>(Encoding.UTF8.GetBytes(testString1));
+    //  string serialized = Encoding.UTF8.GetString(SaneTsv.SerializeSimpleTsv(parsed.ColumnNames, parsed.Records.Select(r => r.Fields.Select(f => f.ToString()).ToArray()).ToArray()));
+
+    //  if (testString1 == serialized)
+    //  {
+    //    Console.WriteLine($"Passed {testName}");
+    //  }
+    //  else
+    //  {
+    //    Console.WriteLine($"Failed {testName}");
+    //  }
+    //}
+
+    {
+      string testName = "Float binary test";
+      var bytes = new List<byte>();
+      bytes.AddRange(Encoding.UTF8.GetBytes("somefloat:float64\tbinfloat:float64-le" +
+        "\n1.5\t")); bytes.AddRange(BitConverter.GetBytes(1.5));
+      bytes.AddRange(Encoding.UTF8.GetBytes("\n-8.0000005E-14\t")); bytes.AddRange(BitConverter.GetBytes(-8.0000005E-14));
+
+      Tsv<FloatTestRecord> parsed = SaneTsv.ParseTypedTsv<FloatTestRecord>(bytes.ToArray());
+      if (parsed.Records[0].BinFloat == parsed.Records[0].SomeFloat)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+      else
+      {
+        Console.WriteLine($"Failed {testName}");
+      }
+    }
+
+    {
+      string testName = "Serde test";
+
+      TestRecord[] data =
+      {
+        new TestRecord("test", true, 44.5f, 44.5f, -88e-3, -88e-3, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3 }),
+        new TestRecord("test2", false, 44.5000005f, 44.5000005f, -88e-30, -88e-30, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 }),
+        new TestRecord("test2", false, float.NaN, float.NaN, double.NaN, double.NaN, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 }),
+        new TestRecord("test2", false, float.NegativeInfinity, float.NegativeInfinity, double.NegativeInfinity, double.NegativeInfinity, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 }),
+        new TestRecord("test2", false, float.PositiveInfinity, float.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 }),
+      };
+
+      byte[] serialized = SaneTsv.SerializeTypedTsv(data);
+
+      Tsv<TestRecord> parsed = SaneTsv.ParseTypedTsv<TestRecord>(serialized);
+
+      if ((float)parsed.Records[1].Float32Test == 44.5000005f)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+      else
+      {
+        Console.WriteLine($"Failed {testName}");
+      }
+    }
+
+    {
+      string testName = "Trying to parse a not commented record as a Commented TSV test";
+
+      // These should not compile:
+
+      //byte[] serialized = SaneTsv.SerializeCommentedTsv(data);
+      // Gives this error: error CS7036: There is no argument given that corresponds to the required parameter 'fileComment' of 'SaneTsv.SerializeCommentedTsv<T>(IList<T>, string)'
+
+      //Tsv<TestRecord> parsed = SaneTsv.ParseCommentedTsv<TestRecord>(serialized);
+      // Gives this error:  error CS0311: The type 'Program.TestRecord' cannot be used as type parameter 'T' in the generic type or method 'SaneTsv.ParseCommentedTsv<T>(byte[])'. There is no implicit reference conversion from 'Program.TestRecord' to 'NathanMcRae.SaneTsv.CommentedTsvRecord'.
+    }
+
+    {
+      string testName = "Try to parsed a Commented TSV as a Simple TSV";
+
+      string testString1 = "#This is a file comment\n" +
+        "#One more file comment line\n" +
+        "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+        "\n#This is a comment" +
+        "\n#Another comment line" +
+        "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+        "\nFALSE\tnother\tno\\ther";
+
+      try
+      {
+        Tsv<BoolTestRecord2> parsed = SaneTsv.ParseSimpleTsv<BoolTestRecord2>(Encoding.UTF8.GetBytes(testString1));
+
+        Console.WriteLine($"Failed {testName}");
+      }
+      catch (Exception e)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+    }
+
+    {
+      string testName = "Try to parsed a Commented TSV as a Typed TSV";
+
+      string testString1 = "#This is a file comment\n" +
+        "#One more file comment line\n" +
+        "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+        "\n#This is a comment" +
+        "\n#Another comment line" +
+        "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+        "\nFALSE\tnother\tno\\ther";
+
+      try
+      {
+        Tsv<BoolTestRecord2> parsed = SaneTsv.ParseTypedTsv<BoolTestRecord2>(Encoding.UTF8.GetBytes(testString1));
+
+        Console.WriteLine($"Failed {testName}");
+      }
+      catch (Exception e)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+    }
+
+    {
+      string testName = "Try to parsed a Typed TSV as a Simple TSV";
+
+      string testString1 = 
+        "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+        "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+        "\nFALSE\tnother\tno\\ther";
+
+      try
+      {
+        Tsv<BoolTestRecord2> parsed = SaneTsv.ParseSimpleTsv<BoolTestRecord2>(Encoding.UTF8.GetBytes(testString1));
+
+        Console.WriteLine($"Failed {testName}");
+      }
+      catch (Exception e)
+      {
+        Console.WriteLine($"Passed {testName}");
+      }
+    }
+
+    Console.WriteLine("Done with tests");
   }
 }
 
-{
-  string testName = "Bad bool test";
-  try
-  {
-    string testString1 = "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
-      "\nTUE\tvalue\\\\t\0woo\tvaluetrhee" +
-      "\nFALSE\tnother\tno\\ther";
 
-    SaneTsv parsed = SaneTsv.ParseTypedTsv(Encoding.UTF8.GetBytes(testString1));
-    Console.WriteLine($"Failed {testName}");
-  }
-  catch (Exception)
-  {
-    Console.WriteLine($"Passed {testName}");
-  }
-
-}
-
-{
-  string testName = "Comment test";
-  string testString1 = "#This is a file comment\n" +
-    "#One more file comment line\n" +
-    "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
-    "\n#This is a comment" +
-    "\n#Another comment line" +
-    "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
-    "\nFALSE\tnother\tno\\ther";
-
-  SaneTsv parsed = SaneTsv.ParseCommentedTsv(Encoding.UTF8.GetBytes(testString1));
-}
-
-{
-  string testName = "Serde test";
-  string testString1 = "column1\tcolumn2\tcolumnthree\\nyep" +
-    "\nTRUE\tvalue\\\\twoo\tvaluetrhee" +
-    "\nFALSE\tnother\tno\\ther";
-
-  SaneTsv parsed = SaneTsv.ParseSimpleTsv(Encoding.UTF8.GetBytes(testString1));
-  string serialized = Encoding.UTF8.GetString(SaneTsv.SerializeSimpleTsv(parsed.ColumnNames, parsed.Records.Select(r => r.Fields.Select(f => f.ToString()).ToArray()).ToArray()));
-
-  if (testString1 == serialized)
-  {
-    Console.WriteLine($"Passed {testName}");
-  }
-  else
-  {
-    Console.WriteLine($"Failed {testName}");
-  }
-}
-
-{
-  string testName = "Float binary test";
-  var bytes = new List<byte>();
-  bytes.AddRange(Encoding.UTF8.GetBytes("somefloat:float64\tbinfloat:float64-le" +
-    "\n1.5\t")); bytes.AddRange(BitConverter.GetBytes(1.5));
-  bytes.AddRange(Encoding.UTF8.GetBytes("\n-8.0000005E-14\t")); bytes.AddRange(BitConverter.GetBytes(-8.0000005E-14));
-
-  SaneTsv parsed = SaneTsv.ParseTypedTsv(bytes.ToArray());
-  if ((double)parsed.Records[0]["binfloat"] == (double)parsed.Records[0]["somefloat"])
-  {
-    Console.WriteLine($"Passed {testName}");
-  }
-  else
-  {
-    Console.WriteLine($"Failed {testName}");
-  }
-}
-
-Console.WriteLine("Done with tests");
-
-{
-  string testName = "Serde test";
-  string[] headerNames =
-  {
-    "string-test",
-    "bool-test",
-    "float32-test",
-    "float32-le-test",
-    "float64-test",
-    "float64-le-test",
-    "uint32-test",
-    "uint64-test",
-    "int32-test",
-    "int64-test",
-    "binary-test",
-  };
-
-  Type[] headerTypes =
-  {
-    typeof(SaneTsv.StringType),
-    typeof(SaneTsv.BooleanType),
-    typeof(SaneTsv.Float32Type),
-    typeof(SaneTsv.Float32LEType),
-    typeof(SaneTsv.Float64Type),
-    typeof(SaneTsv.Float64LEType),
-    typeof(SaneTsv.UInt32Type),
-    typeof(SaneTsv.UInt64Type),
-    typeof(SaneTsv.Int32Type),
-    typeof(SaneTsv.Int64Type),
-    typeof(SaneTsv.BinaryType),
-  };
-
-  object[][] data =
-  {
-    new object[] { "test", true, 44.5f, 44.5f, -88e-3, -88e-3, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3 } },
-    new object[] { "test2", false, 44.5000005f, 44.5000005f, -88e-30, -88e-30, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 } },
-    new object[] { "test2", false, float.NaN, float.NaN, double.NaN, double.NaN, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 } },
-    new object[] { "test2", false, float.NegativeInfinity, float.NegativeInfinity, double.NegativeInfinity, double.NegativeInfinity, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 } },
-    new object[] { "test2", false, float.PositiveInfinity, float.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity, 7773, 88888888, -7773, -88888888, new byte[] { 0, 1, 2, 3, 4 } },
-  };
-
-  byte[] serialized = SaneTsv.SerializeTypedTsv(headerTypes, headerNames, data);
-
-  SaneTsv parsed = SaneTsv.ParseTypedTsv(serialized);
-
-  if ((float)parsed.Records[1]["float32-test"] == 44.5000005)
-  {
-    Console.WriteLine($"Passed {testName}");
-  }
-  else
-  {
-    Console.WriteLine($"Failed {testName}");
-  }
-}
-// TODO: Check qNaN, sNaN, +inf, -inf values for float types