/// <inheritdoc/>
public FudgeStreamElement MoveNext()
{
if (currentState == null)
{
if (!HasNext) // Will fetch the next if required
{
element = FudgeStreamElement.NoElement;
}
else
{
currentState = new State(nextMessage);
nextMessage = null;
element = FudgeStreamElement.MessageStart;
}
}
else if (currentState.Fields.Count == 0)
{
if (stack.Count == 0)
{
// Finished the message
currentState = null;
element = FudgeStreamElement.MessageEnd;
}
else
{
currentState = stack.Pop();
element = FudgeStreamElement.SubmessageFieldEnd;
}
}
else
{
field = currentState.Fields.Dequeue();
if (field.Type == FudgeMsgFieldType.Instance)
{
stack.Push(currentState);
currentState = new State((FudgeMsg)field.Value);
element = FudgeStreamElement.SubmessageFieldStart;
}
else
{
element = FudgeStreamElement.SimpleField;
}
}
return(element);
}
/// <summary>
/// Parses data from a given <see cref="BinaryReader"/>.
/// </summary>
/// <param name="binaryReader"></param>
/// <returns></returns>
public FudgeMsgEnvelope Parse(BinaryReader binaryReader)
{
FudgeEncodedStreamReader reader = new FudgeEncodedStreamReader(FudgeContext);
reader.Reset(binaryReader);
FudgeStreamElement element = reader.MoveNext();
if (element == FudgeStreamElement.NoElement)
{
return(null);
}
if (element != FudgeStreamElement.MessageStart)
{
throw new ArgumentException("First element in encoding stream wasn't a message element.");
}
int version = reader.SchemaVersion;
FudgeMsg msg = FudgeContext.NewMessage();
FudgeMsgEnvelope envelope = new FudgeMsgEnvelope(msg, version);
ProcessFields(reader, msg);
return(envelope);
}
/**
* @param reader
* @param msg
*/
protected void ProcessFields(IFudgeStreamReader reader, FudgeMsg msg)
{
while (reader.HasNext)
{
FudgeStreamElement element = reader.MoveNext();
switch (element)
{
case FudgeStreamElement.SimpleField:
msg.Add(reader.FieldName, reader.FieldOrdinal, reader.FieldType, reader.FieldValue);
break;
case FudgeStreamElement.SubmessageFieldStart:
FudgeMsg subMsg = FudgeContext.NewMessage();
msg.Add(reader.FieldName, reader.FieldOrdinal, subMsg);
ProcessFields(reader, subMsg);
break;
case FudgeStreamElement.SubmessageFieldEnd:
case FudgeStreamElement.MessageEnd:
return;
}
}
}
/// <inheritdoc/>
public FudgeStreamElement MoveNext()
{
if (currentState == null)
{
if (!HasNext) // Will fetch the next if required
{
element = FudgeStreamElement.NoElement;
}
else
{
currentState = new State(nextMessage);
nextMessage = null;
element = FudgeStreamElement.MessageStart;
}
}
else if (currentState.Fields.Count == 0)
{
if (stack.Count == 0)
{
// Finished the message
currentState = null;
element = FudgeStreamElement.MessageEnd;
}
else
{
currentState = stack.Pop();
element = FudgeStreamElement.SubmessageFieldEnd;
}
}
else
{
field = currentState.Fields.Dequeue();
if (field.Type == FudgeMsgFieldType.Instance)
{
stack.Push(currentState);
currentState = new State((IFudgeFieldContainer)field.Value);
element = FudgeStreamElement.SubmessageFieldStart;
}
else
{
element = FudgeStreamElement.SimpleField;
}
}
return element;
}
