public void Serialize(EndianAwareBinaryWriter writer, object value, SerializedType serializedType,
int? length = null)
{
if (value == null)
{
/* In the special case of sized strings, don't allow nulls */
if (serializedType == SerializedType.SizedString)
value = string.Empty;
else return;
}
int? constLength = null;
long? maxLength = null;
var typeParent = TypeNode.Parent as TypeNode;
if (length != null)
constLength = length.Value;
else if (TypeNode.FieldLengthBinding != null && TypeNode.FieldLengthBinding.IsConst)
{
constLength = Convert.ToInt32(TypeNode.FieldLengthBinding.ConstValue);
}
else if (typeParent != null && typeParent.ItemLengthBinding != null && typeParent.ItemLengthBinding.IsConst)
{
constLength = Convert.ToInt32(typeParent.ItemLengthBinding.ConstValue);
}
else if (TypeNode.FieldCountBinding != null && TypeNode.FieldCountBinding.IsConst)
{
constLength = Convert.ToInt32(TypeNode.FieldCountBinding.ConstValue);
}
else if (serializedType == SerializedType.ByteArray || serializedType == SerializedType.SizedString || serializedType == SerializedType.NullTerminatedString)
{
// try to get bounded length from limiter
var baseStream = (StreamLimiter) writer.BaseStream;
maxLength = baseStream.AvailableForWriting;
}
switch (serializedType)
{
case SerializedType.Int1:
writer.Write(Convert.ToSByte(value));
break;
case SerializedType.UInt1:
writer.Write(Convert.ToByte(value));
break;
case SerializedType.Int2:
writer.Write(Convert.ToInt16(value));
break;
case SerializedType.UInt2:
writer.Write(Convert.ToUInt16(value));
break;
case SerializedType.Int4:
writer.Write(Convert.ToInt32(value));
break;
case SerializedType.UInt4:
writer.Write(Convert.ToUInt32(value));
break;
case SerializedType.Int8:
writer.Write(Convert.ToInt64(value));
break;
case SerializedType.UInt8:
writer.Write(Convert.ToUInt64(value));
break;
case SerializedType.Float4:
writer.Write(Convert.ToSingle(value));
break;
case SerializedType.Float8:
writer.Write(Convert.ToDouble(value));
break;
case SerializedType.ByteArray:
{
var data = (byte[]) value;
writer.Write(data, 0, data.Length);
break;
}
case SerializedType.NullTerminatedString:
{
byte[] data = Encoding.GetBytes(value.ToString());
if (constLength != null)
Array.Resize(ref data, constLength.Value - 1);
if(maxLength != null && data.Length > maxLength)
Array.Resize(ref data, (int)maxLength.Value - 1);
writer.Write(data);
writer.Write((byte) 0);
break;
}
case SerializedType.SizedString:
{
byte[] data = Encoding.GetBytes(value.ToString());
if (constLength != null)
Array.Resize(ref data, constLength.Value);
if (maxLength != null && data.Length > maxLength)
Array.Resize(ref data, (int)maxLength.Value);
writer.Write(data);
break;
}
case SerializedType.LengthPrefixedString:
{
if(constLength != null)
throw new NotSupportedException("Length-prefixed strings cannot have a const length.");
writer.Write(value.ToString());
break;
}
default:
throw new NotSupportedException();
}
}
public void Serialize(Stream stream, object value, SerializedType serializedType, int? length = null)
{
var writer = new EndianAwareBinaryWriter(stream, Endianness);
Serialize(writer, value, serializedType, length);
}
