Eliminate kInitialState pattern, use Start() function instead

Author: dziegel

examples/activeobject/Fsm.cxx

@@ -30,5 +30,4 @@ Fsm::Transition Fsm::State2Handler(ImplPtr impl, Event event)
 
 const Fsm::State Fsm::kState1("State1", &State1Handler);
 const Fsm::State Fsm::kState2("State2", &State2Handler);
-const Fsm::StatePtr Fsm::kInitialState = &kState1; // initial state of the statemachine
 } // namespace example::activeobject

examples/activeobject/Fsm.hxx

@@ -10,10 +10,14 @@ public:
     // States
     static const State kState1;
     static const State kState2;
-    static const StatePtr kInitialState;
 
     // Handlers
     static Transition State1Handler(ImplPtr impl, Event event);
     static Transition State2Handler(ImplPtr impl, Event event);
+
+    inline void Start()
+    {
+        FsmBase::Start(&kState1);
+    }
 };
 } // namespace example::activeobject

examples/activeobject/FsmImpl.cxx

@@ -20,7 +20,7 @@ FsmImpl::FsmImpl()
     fsm_.on_unhandled_event_ = [](Fsm::Ref fsm, Fsm::StateRef state, Fsm::Event event)
     { std::cout << fsm << " unhandled event " << event << " in state " << state << "\n"; };
 
-    fsm_.Start(Fsm::kInitialState);
+    fsm_.Start();
 }
 
 void FsmImpl::State1Entry()

examples/activeobject_embedded/Fsm.cxx

@@ -30,5 +30,4 @@ Fsm::Transition Fsm::State2Handler(ImplPtr impl, Event event)
 
 const Fsm::State Fsm::kState1("State1", &State1Handler);
 const Fsm::State Fsm::kState2("State2", &State2Handler);
-const Fsm::StatePtr Fsm::kInitialState = &kState1; // initial state of the statemachine
 } // namespace example::activeobject_embedded

examples/activeobject_embedded/Fsm.hxx

@@ -10,10 +10,14 @@ public:
     // States
     static const State kState1;
     static const State kState2;
-    static const StatePtr kInitialState;
 
     // Handlers
     static Transition State1Handler(ImplPtr impl, Event event);
     static Transition State2Handler(ImplPtr impl, Event event);
+
+    inline void Start()
+    {
+        FsmBase::Start(&kState1);
+    }
 };
 } // namespace example::activeobject_embedded

examples/activeobject_embedded/FsmImpl.cxx

@@ -8,7 +8,7 @@ FsmImpl::FsmImpl()
 
     // No logging because printf or std::ostream use heap memory
 
-    fsm_.Start(Fsm::kInitialState);
+    fsm_.Start();
 }
 
 void FsmImpl::State1Entry()

examples/interface/Fsm.cxx

@@ -30,5 +30,4 @@ Fsm::Transition Fsm::State2Handler(ImplPtr impl, Event event)
 
 const Fsm::State Fsm::kState1("State1", &State1Handler);
 const Fsm::State Fsm::kState2("State2", &State2Handler);
-const Fsm::StatePtr Fsm::kInitialState = &kState1; // initial state of the statemachine
 } // namespace example::interface

examples/interface/Fsm.hxx

@@ -10,10 +10,14 @@ public:
     // States
     static const State kState1;
     static const State kState2;
-    static const StatePtr kInitialState;
 
     // Handlers
     static Transition State1Handler(ImplPtr impl, Event event);
     static Transition State2Handler(ImplPtr impl, Event event);
+
+    inline void Start()
+    {
+        FsmBase::Start(&kState1);
+    }
 };
 } // namespace example::interface

examples/interface/FsmImpl.cxx

@@ -20,7 +20,7 @@ FsmImpl::FsmImpl()
     fsm_.on_unhandled_event_ = [](Fsm::Ref fsm, Fsm::StateRef state, Fsm::Event event)
     { std::cout << fsm << " unhandled event " << static_cast<int>(event) << " in state " << state << std::endl; };
 
-    fsm_.Start(Fsm::kInitialState);
+    fsm_.Start();
 }
 
 void FsmImpl::Run()

examples/pimpl/Fsm.cxx

@@ -30,5 +30,4 @@ Fsm::Transition Fsm::State2Handler(ImplPtr impl, Event event)
 
 const Fsm::State Fsm::kState1("State1", &State1Handler);
 const Fsm::State Fsm::kState2("State2", &State2Handler);
-const Fsm::StatePtr Fsm::kInitialState = &kState1; // initial state of the statemachine
 } // namespace example::pimpl