Examples of ptolemy.domains.fsm.kernel.FSMActor.chooseTransition()

Class ptolemy.domains.fsm.kernel.FSMActor

Examples of ptolemy.domains.fsm.kernel.FSMActor.chooseTransition()

ptolemy.domains.fsm.kernel.FSMActor.chooseTransition()
Return an enabled transition among the given list of transitions. If there is only one transition enabled, return that transition. In case there are multiple enabled transitions, if any of them is not nondeterministic, throw an exception. See {@link Transition}for the explanation of "nondeterministic". Otherwise, randomly choose one from the enabled transitions and return it.
Execute the choice actions contained by the returned transition. @param transitionList A list of transitions. @return An enabled transition, or null if none is enabled. @exception IllegalActionException If there is more than onetransition enabled and not all of them are nondeterministic.

        State st = controller.currentState();


        // Chose a preemptive transition, if there is one,
        // and execute its choice actions.
        // The choice actions are the outputActions, not the setActions.
        Transition tr = controller.chooseTransition(st
                .preemptiveTransitionList());
        _enabledTransition = tr;


        // If a preemptive transition was found, prefire and fire
        // the refinements of the transition, and then return.

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                return;
            }
        }


        // See whether there is an enabled transition.
        tr = controller.chooseTransition(st.nonpreemptiveTransitionList());
        _enabledTransition = tr;
        if (tr != null) {
            if (_debugging) {
                _debug("Transition: " + tr.getName() + " is enabled.");
            }

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            // iterating-purely-discrete-actors phase.
            // Check enabled transitions at the end of a continuous phase
            // execution where the accuracy of the current step size is checked.
            if ((getExecutionPhase() == CTExecutionPhase.GENERATING_EVENTS_PHASE)
                    || (getExecutionPhase() == CTExecutionPhase.ITERATING_PURELY_DISCRETE_ACTORS_PHASE)) {
                transition = ctrl.chooseTransition(currentState
                        .preemptiveTransitionList());
                _transitionHasEvent = false;
            } else {
                transition = null;
            }

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            // phase of execution to verify the accuracy of current step size.
            if ((getExecutionPhase() == CTExecutionPhase.GENERATING_EVENTS_PHASE)
                    || (getExecutionPhase() == CTExecutionPhase.ITERATING_PURELY_DISCRETE_ACTORS_PHASE)) {
                // Note that the output actions associated with the transition
                // are executed.
                transition = ctrl.chooseTransition(currentState
                        .nonpreemptiveTransitionList());
                _transitionHasEvent = false;
            } else {
                transition = null;
            }

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