Method ProcessEvent

src/GCodes/GCodes3.cpp:1311–1367

Process an event. The autoPauseGCode buffer calls this when there is a new event to be processed. This is a separate function because it allocates strings on the stack.

// Process an event. The autoPauseGCode buffer calls this when there is a new event to be processed.
// This is a separate function because it allocates strings on the stack.
void GCodes::ProcessEvent(GCodeBuffer& gb) noexcept
{
	// Get the event message
	String<StringLength100> eventText;
	const MessageType mt = Event::GetTextDescription(eventText.GetRef());

	// Get the name of the macro file that we should look for
	String<StringLength50> macroName;
	Event::GetMacroFileName(macroName.GetRef());

#if HAS_MASS_STORAGE || HAS_SBC_INTERFACE || HAS_EMBEDDED_FILES
	if (platform.SysFileExists(macroName.c_str()))
	{
		// Set up the macro parameters
		VariableSet vars;
		Event::GetParameters(vars);
		try
		{
			vars.InsertNewParameter("S", ExpressionValue(StringHandle(eventText.c_str())));
		}
		catch (const GCodeException&) { }

		// Run the macro
		gb.SetState(GCodeState::finishedProcessingEvent);				// cancel the event when we have finished processing it
		if (DoFileMacro(gb, macroName.c_str(), false, AsyncSystemMacroCode, vars))
		{
			return;
		}
	}
#endif

	// We didn't execute the macro, so do the default action
	if (Event::GetDefaultPauseReason() == PrintPausedReason::dontPause)
	{
		platform.MessageF(mt, "%s\n", eventText.c_str());				// record the event on the console and log it
		Event::FinishedProcessing();									// nothing more to do
	}
	else
	{
		// It's a serious event that causes the print to pause by default, so send an alert
		if ((mt & LogLevelMask) != 0)
		{
			platform.MessageF((MessageType)(mt & (LogLevelMask | ErrorMessageFlag | WarningMessageFlag)), "%s\n", eventText.c_str());	// log the event
		}
		const bool isPrinting = IsReallyPrinting();
		reprap.SendSimpleAlert(GenericMessage, eventText.c_str(), (isPrinting) ? "Printing paused" : "Event notification");
		if (IsReallyPrinting())
		{
			// We are going to pause. It may need to wait for the movement lock, so do it in a new state.
			gb.SetState(GCodeState::processingEvent);
		}
		else
		{
			Event::FinishedProcessing();
		}
	}
}