Fixed lowest function call in call stack

kernel/modelverse_kernel/main.py

@@ -19,7 +19,7 @@ class ModelverseKernel(object):
         self.generators = {}
         self.allow_compiled = True
         #self.allow_compiled = False
-        self.debug_info = defaultdict(lambda: ["None"])
+        self.debug_info = defaultdict(list)
 
     def execute_yields(self, username, operation, params, reply):
         try:
@@ -60,7 +60,9 @@ class ModelverseKernel(object):
                                    ("RV", [self.inst]),
                                   ]
             if self.new_debug is not None:
-                self.debug_info[username][-1], = yield [("RV", [self.new_debug])]
+                if len(self.debug_info[username]) > 0:
+                    self.debug_info[username][-1], = yield [("RV", [self.new_debug])]
+                    print(self.debug_info[username])
 
             if self.phase_v == "finish":
                 gen = self.helper_init(user_root)
@@ -531,12 +533,12 @@ class ModelverseKernel(object):
         value, =            yield [("RD", [inst, "value"])]
 
         if value is None:
-            self.debug_info[self.username].pop()
             prev_frame, =   yield [("RD", [user_frame, "prev"])]
             if prev_frame is None:
                 _, =            yield [("DN", [user_root])]
                 del self.debug_info[self.username]
             else:
+                self.debug_info[self.username].pop()
                 _, _ =          yield [("CD", [user_root, "frame", prev_frame]),
                                        ("DN", [user_frame]),
                                       ]

kernel/mvk_server/server.py

@@ -1,7 +1,7 @@
 """
 Generated by Statechart compiler by Glenn De Jonghe, Joeri Exelmans, Simon Van Mierlo, and Yentl Van Tendeloo (for the inspiration)
 
-Date:   Fri Feb 10 11:29:04 2017
+Date:   Fri Feb 10 11:42:33 2017
 
 Model author: Yentl Van Tendeloo
 Model name:   MvK Server