/// <summary>
/// Creates a new instance using the specified <see cref="IDecodingState"/>.
/// </summary>
/// <param name="state">the <see cref="IDecodingState"/></param>
/// <exception cref="ArgumentNullException">if the specified state is <code>null</code></exception>
public DecodingStateProtocolDecoder(IDecodingState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
_state = state;
}
public IDecodingState Decode(IoBuffer input, IProtocolDecoderOutput output)
{
IDecodingState state = CurrentState;
Int32 limit = input.Limit, pos = input.Position;
try
{
while (true)
{
// Wait for more data if all data is consumed.
if (pos == limit)
{
break;
}
IDecodingState oldState = state;
state = state.Decode(input, _childOutput);
// If finished, call finishDecode
if (state == null)
{
return(FinishDecode(_childProducts, output));
}
Int32 newPos = input.Position;
// Wait for more data if nothing is consumed and state didn't change.
if (newPos == pos && oldState == state)
{
break;
}
pos = newPos;
}
return(this);
}
catch (Exception)
{
state = null;
throw;
}
finally
{
_currentState = state;
// Destroy if decoding is finished or failed.
if (state == null)
{
Cleanup();
}
}
}
public IDecodingState Decode(IoBuffer input, IProtocolDecoderOutput output)
{
IDecodingState state = CurrentState;
Int32 limit = input.Limit, pos = input.Position;
try
{
while (true)
{
// Wait for more data if all data is consumed.
if (pos == limit)
break;
IDecodingState oldState = state;
state = state.Decode(input, _childOutput);
// If finished, call finishDecode
if (state == null)
return FinishDecode(_childProducts, output);
Int32 newPos = input.Position;
// Wait for more data if nothing is consumed and state didn't change.
if (newPos == pos && oldState == state)
break;
pos = newPos;
}
return this;
}
catch (Exception)
{
state = null;
throw;
}
finally
{
_currentState = state;
// Destroy if decoding is finished or failed.
if (state == null)
Cleanup();
}
}
public IDecodingState FinishDecode(IProtocolDecoderOutput output)
{
IDecodingState nextState;
IDecodingState state = CurrentState;
try
{
while (true)
{
IDecodingState oldState = state;
state = state.FinishDecode(_childOutput);
if (state == null)
{
// Finished
break;
}
// Exit if state didn't change.
if (oldState == state)
{
break;
}
}
}
catch (Exception ex)
{
state = null;
if (log.IsDebugEnabled)
{
log.Debug("Ignoring the exception caused by a closed session.", ex);
}
}
finally
{
_currentState = state;
nextState = FinishDecode(_childProducts, output);
if (state == null)
{
Cleanup();
}
}
return(nextState);
}
public IDecodingState FinishDecode(IProtocolDecoderOutput output)
{
IDecodingState nextState;
IDecodingState state = CurrentState;
try
{
while (true)
{
IDecodingState oldState = state;
state = state.FinishDecode(_childOutput);
if (state == null)
// Finished
break;
// Exit if state didn't change.
if (oldState == state)
break;
}
}
catch (Exception ex)
{
state = null;
Debug.WriteLine("Ignoring the exception caused by a closed session. {0}", ex);
}
finally
{
_currentState = state;
nextState = FinishDecode(_childProducts, output);
if (state == null)
Cleanup();
}
return nextState;
}
public DecodingStateProtocolDecoder(IDecodingState state)
{
if (state == null)
throw new ArgumentNullException("state");
_state = state;
}