control flow is given back to the interpreter when simulation is aborted due to a c++ exception

Author: debsankha manik

devs/cadevs.pxd

@@ -103,5 +103,6 @@ cdef extern from "adevs_python.hpp" namespace "pydevs":
         Simulator(Atomic*) except +
         Simulator(Digraph*) except +
         Time nextEventTime() except *
-        void executeNextEvent() except *
-        void executeUntil(Time) except *
+        void executeNextEvent() except +* # the +* signifies this can raise
+                                          # both python and c++ exceptions
+        void executeUntil(Time) except +*

test_exceptions/error_throwing_model.py

@@ -147,4 +147,7 @@ def delta_ext(self, e, xb):
 digraph.couple(server, server.departure_port, observer, observer.departure_port)
 
 simulator = devs.Simulator(digraph)
-simulator.execute_until(15.0)
+try:
+    simulator.execute_until(15.0)
+except Exception as e:
+    x = e