/// <summary>
/// Request the packet object write out all of its fields.
/// </summary>
/// <param name="packet"></param>
/// <param name="writer"></param>
internal void WriteFields(IPacket packet, IFieldWriter writer)
{
if (packet is GenericPacket)
{
//TODO: Update generic packet handling
//packet.WriteFields(writer);
}
else
{
//We need all of our base classes to write out before us
if (m_BasePacket != null)
{
m_BasePacket.WriteFields(packet, writer);
}
//and finally write out our information, if we have any.
if (m_WriteMethod != null && m_Fields.Count > 0)
{
//we need to create a serialized packet for this new level so the write method can store information
SerializedPacket serializedPacket = new SerializedPacket(this);
m_WriteMethod.Invoke(packet, new object[] { this, serializedPacket });
//and now write out the fields to serialization.
for (int curFieldIndex = 0; curFieldIndex < Fields.Count; curFieldIndex++)
{
FieldDefinition fieldDefinition = Fields[curFieldIndex];
writer.Write(serializedPacket.Values[curFieldIndex], fieldDefinition.FieldType);
}
}
}
}
/// <summary>
/// Read back the field values for the current packet.
/// </summary>
/// <param name="definition">The definition that was used to persist the packet.</param>
/// <param name="packet">The serialized packet to read data from</param>
void IPacket.ReadFields(PacketDefinition definition, SerializedPacket packet)
{
throw new System.NotImplementedException();
}
/// <summary>
/// Write out all of the fields for the current packet
/// </summary>
/// <param name="definition">The definition that was used to persist the packet.</param>
/// <param name="packet">The serialized packet to populate with data</param>
void IPacket.WriteFields(PacketDefinition definition, SerializedPacket packet)
{
if (m_BasePacket != null)
{
((IPacket)m_BasePacket).WriteFields(definition, packet);
}
for (int index = 0; index < m_Definition.Fields.Count; index++)
{
FieldDefinition fieldDefinition = m_Definition.Fields[index];
switch (fieldDefinition.FieldType)
{
case FieldType.Bool:
packet.SetField(fieldDefinition.Name, (bool)m_FieldValues[index]);
break;
case FieldType.BoolArray:
packet.SetField(fieldDefinition.Name, (bool[])m_FieldValues[index]);
break;
case FieldType.String:
packet.SetField(fieldDefinition.Name, (string)m_FieldValues[index]);
break;
case FieldType.StringArray:
packet.SetField(fieldDefinition.Name, (string[])m_FieldValues[index]);
break;
case FieldType.Int32:
packet.SetField(fieldDefinition.Name, (Int32)m_FieldValues[index]);
break;
case FieldType.Int32Array:
packet.SetField(fieldDefinition.Name, (Int32[])m_FieldValues[index]);
break;
case FieldType.Int64:
packet.SetField(fieldDefinition.Name, (Int64)m_FieldValues[index]);
break;
case FieldType.Int64Array:
packet.SetField(fieldDefinition.Name, (Int64[])m_FieldValues[index]);
break;
case FieldType.UInt32:
packet.SetField(fieldDefinition.Name, (UInt32)m_FieldValues[index]);
break;
case FieldType.UInt32Array:
packet.SetField(fieldDefinition.Name, (UInt32[])m_FieldValues[index]);
break;
case FieldType.UInt64:
packet.SetField(fieldDefinition.Name, (UInt64)m_FieldValues[index]);
break;
case FieldType.UInt64Array:
packet.SetField(fieldDefinition.Name, (UInt64[])m_FieldValues[index]);
break;
case FieldType.Double:
packet.SetField(fieldDefinition.Name, (double)m_FieldValues[index]);
break;
case FieldType.DoubleArray:
packet.SetField(fieldDefinition.Name, (double[])m_FieldValues[index]);
break;
case FieldType.TimeSpan:
packet.SetField(fieldDefinition.Name, (TimeSpan)m_FieldValues[index]);
break;
case FieldType.TimeSpanArray:
packet.SetField(fieldDefinition.Name, (TimeSpan[])m_FieldValues[index]);
break;
case FieldType.DateTime:
packet.SetField(fieldDefinition.Name, (DateTime)m_FieldValues[index]);
break;
case FieldType.DateTimeArray:
packet.SetField(fieldDefinition.Name, (DateTime[])m_FieldValues[index]);
break;
case FieldType.Guid:
packet.SetField(fieldDefinition.Name, (Guid)m_FieldValues[index]);
break;
case FieldType.GuidArray:
packet.SetField(fieldDefinition.Name, (Guid[])m_FieldValues[index]);
break;
case FieldType.DateTimeOffset:
packet.SetField(fieldDefinition.Name, (DateTimeOffset)m_FieldValues[index]);
break;
case FieldType.DateTimeOffsetArray:
packet.SetField(fieldDefinition.Name, (DateTimeOffset[])m_FieldValues[index]);
break;
default:
#if DEBUG
if (Debugger.IsAttached)
{
Debugger.Break();
}
#endif
throw new InvalidOperationException(string.Format("The field type {0} is unknown so we can't serialize the packet ", definition.Fields[index].FieldType));
}
}
}
private void ReadFields(Type type, IPacket packet, IFieldReader reader)
{
Exception basePacketException = null;
if (m_BasePacket != null)
{
try
{
m_BasePacket.ReadFields(type.GetTypeInfo().BaseType, packet, reader);
}
catch (Exception ex)
{
basePacketException = ex; // Remember this to wrap it in a new exception.
}
}
if (!m_ReadMethodAssigned)
{
const BindingFlags flags = BindingFlags.DeclaredOnly |
BindingFlags.Instance |
BindingFlags.InvokeMethod |
BindingFlags.NonPublic;
if (typeof(IPacket).IsAssignableFrom(type))
{
// Even though the current type implements IPacket, it may not have a ReadFields at this level
m_ReadMethod = GetIPacketMethod(type, "ReadFields", flags, new Type[] { typeof(PacketDefinition), typeof(SerializedPacket) });
}
m_ReadMethodAssigned = true;
}
Exception firstException = null;
FieldType firstFailedFieldType = FieldType.Unknown;
string firstFailedFieldName = null;
if (m_ReadMethod != null)
{
//we need to read back everything the definition says should be there into an array and then pass that
//to the object for handling.
object[] values = new object[Fields.Count];
for (int curFieldIndex = 0; curFieldIndex < Fields.Count; curFieldIndex++)
{
FieldDefinition fieldDefinition = Fields[curFieldIndex];
try
{
values[curFieldIndex] = reader.ReadField(fieldDefinition.FieldType);
}
catch (Exception ex)
{
if (basePacketException == null && firstException == null)
{
firstException = ex; // Only record the first one encountered in this packet.
firstFailedFieldType = fieldDefinition.FieldType;
firstFailedFieldName = fieldDefinition.Name;
}
}
}
// Now check for exceptions we may have encountered. We had to finish reading each field of each packet level
// in order to keep the stream in sync, but now we have to throw a wrapping exception if there was an error.
string message;
if (basePacketException != null) // This happened earlier, so it takes precedence over field exceptions.
{
message = string.Format("Error reading base {0} of a {1}", m_BasePacket.QualifiedTypeName, QualifiedTypeName);
throw new GibraltarSerializationException(message, basePacketException);
}
if (firstException != null) // Otherwise we can report our first exception from reading fields.
{
message = string.Format("Error reading ({0}) field \"{1}\" in a {2}",
firstFailedFieldType, firstFailedFieldName, QualifiedTypeName);
throw new GibraltarSerializationException(message, firstException);
}
SerializedPacket serializedPacket = new SerializedPacket(this, values);
m_ReadMethod.Invoke(packet, new object[] { this, serializedPacket });
}
}
