Method ExpandMessage

Remoting/ClientServerStream/vtkClientServerInterpreter.cxx:574–659

----------------------------------------------------------------------------

//----------------------------------------------------------------------------
int vtkClientServerInterpreter::ExpandMessage(
  const vtkClientServerStream& in, int inIndex, int startArgument, vtkClientServerStream& out)
{
  // Reset the output and make sure we have input.
  out.Reset();
  if (inIndex < 0 || inIndex >= in.GetNumberOfMessages())
  {
    std::ostringstream error;
    error << "ExpandMessage called to expand message index " << inIndex << " in a stream with "
          << in.GetNumberOfMessages() << " messages." << ends;
    this->LastResultMessage->Reset();
    *this->LastResultMessage << vtkClientServerStream::Error << error.str().c_str()
                             << vtkClientServerStream::End;
    return 0;
  }

  // Copy the command.
  out << in.GetCommand(inIndex);

  // Just copy the first arguments.
  int a;
  for (a = 0; a < startArgument && a < in.GetNumberOfArguments(inIndex); ++a)
  {
    out << in.GetArgument(inIndex, a);
  }

  // Expand id_value for remaining arguments.
  for (a = startArgument; a < in.GetNumberOfArguments(inIndex); ++a)
  {
    if (in.GetArgumentType(inIndex, a) == vtkClientServerStream::id_value)
    {
      vtkClientServerID id;
      in.GetArgument(inIndex, a, &id);

      // If the ID is in the map, expand it.  Otherwise, leave it.
      if (const vtkClientServerStream* tmp = this->GetMessageFromID(id))
      {
        for (int b = 0; b < tmp->GetNumberOfArguments(0); ++b)
        {
          out << tmp->GetArgument(0, b);
        }
      }
      else
      {
        out << in.GetArgument(inIndex, a);
      }
    }
    else if (in.GetArgumentType(inIndex, a) == vtkClientServerStream::LastResult)
    {
      // Insert the last result value.
      for (int b = 0; b < this->LastResultMessage->GetNumberOfArguments(0); ++b)
      {
        out << this->LastResultMessage->GetArgument(0, b);
      }
    }
    else if (in.GetArgumentType(inIndex, a) == vtkClientServerStream::stream_value)
    {
      // Evaluate the expression and insert the result.