[Development] Implementing QStateMachine using QtScxml module
ulf.hermann at qt.io
Wed Aug 21 10:56:01 CEST 2019
Hi Jarek (and everyone),
my initial assumption was that we can use the QStateMachine API only for
constructing the state machine and doing introspection on it. In order
to run it, you would have it generate a QScxmlStatemachine and _extract_
that, removing all the extra connections and glue. Such an approach
should (theoretically) be faster than running a QStateMachine today.
However, previous discussions indicated that there are some problems
with this approach. Could you shed some light on that?
One thing I remember is that transitions in QStateMachine involve
virtual method calls and that requires us to keep the original
QStateMachine and its objects tied to the QScxmlStateMachine and its
data model. If that is the only problem we could think about some
alternative mechanism for defining transitions in QStateMachine.
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