msm added to trunk

[SVN r62129]

doc/HTML/examples/AnonymousTutorialWithFunctors.cpp

@@ -0,0 +1,148 @@
+#include <iostream>
+// back-end
+#include <boost/msm/back/state_machine.hpp>
+//front-end
+#include <boost/msm/front/state_machine_def.hpp>
+// functors
+#include <boost/msm/front/functor_row.hpp>
+#include <boost/msm/front/euml/common.hpp>
+
+namespace msm = boost::msm;
+namespace mpl = boost::mpl;
+using namespace boost::msm::front;
+
+namespace
+{
+    // events
+    struct event1 {};
+
+
+    // front-end: define the FSM structure 
+    struct my_machine_ : public msm::front::state_machine_def<my_machine_>
+    {
+        // The list of FSM states
+        struct State1 : public msm::front::state<> 
+        {
+            // every (optional) entry/exit methods get the event passed.
+            template <class Event,class FSM>
+            void on_entry(Event const&,FSM& ) {std::cout << "entering: State1" << std::endl;}
+            template <class Event,class FSM>
+            void on_exit(Event const&,FSM& ) {std::cout << "leaving: State1" << std::endl;}
+        };
+        struct State2 : public msm::front::state<> 
+        {	 
+            template <class Event,class FSM>
+            void on_entry(Event const& ,FSM&) {std::cout << "entering: State2" << std::endl;}
+            template <class Event,class FSM>
+            void on_exit(Event const&,FSM& ) {std::cout << "leaving: State2" << std::endl;}
+        };
+
+        struct State3 : public msm::front::state<> 
+        {	 
+            // when stopped, the CD is loaded
+            template <class Event,class FSM>
+            void on_entry(Event const& ,FSM&) {std::cout << "entering: State3" << std::endl;}
+            template <class Event,class FSM>
+            void on_exit(Event const&,FSM& ) {std::cout << "leaving: State3" << std::endl;}
+        };
+
+        struct State4 : public msm::front::state<>
+        {
+            template <class Event,class FSM>
+            void on_entry(Event const&,FSM& ) {std::cout << "entering: State4" << std::endl;}
+            template <class Event,class FSM>
+            void on_exit(Event const&,FSM& ) {std::cout << "leaving: State4" << std::endl;}
+        };
+
+        // the initial state of the player SM. Must be defined
+        typedef State1 initial_state;
+
+        // transition actions
+        struct State2ToState3 
+        {
+            template <class EVT,class FSM,class SourceState,class TargetState>
+            void operator()(EVT const& ,FSM& ,SourceState& ,TargetState& )
+            {
+                std::cout << "my_machine::State2ToState3" << std::endl;
+            }
+        };
+        struct State3ToState4 
+        {
+            template <class EVT,class FSM,class SourceState,class TargetState>
+            void operator()(EVT const& ,FSM& ,SourceState& ,TargetState& )
+            {
+                std::cout << "my_machine::State3ToState4" << std::endl;
+            }
+        };
+        // guard conditions
+        struct always_true 
+        {
+            template <class EVT,class FSM,class SourceState,class TargetState>
+            bool operator()(EVT const& evt,FSM& fsm,SourceState& src,TargetState& tgt)
+            {
+                std::cout << "always_true" << std::endl;
+                return true;
+            }
+        };
+        struct always_false 
+        {
+            template <class EVT,class FSM,class SourceState,class TargetState>
+            bool operator()(EVT const& evt,FSM& fsm,SourceState& src,TargetState& tgt)
+            {
+                std::cout << "always_false" << std::endl;
+                return true;
+            }
+        };
+
+        typedef my_machine_ p; // makes transition table cleaner
+
+        // Transition table for player
+        struct transition_table : mpl::vector<
+            //    Start     Event         Next      Action				 Guard
+            //  +---------+-------------+---------+---------------------+----------------------+
+            Row < State1  , none        , State2                                               >,
+            Row < State2  , none        , State3  , State2ToState3                             >,
+            Row < State3  , none        , State4  , none                , always_false         >,
+            //  +---------+-------------+---------+---------------------+----------------------+
+            Row < State3  , none        , State4  , State3ToState4      , always_true          >,
+            Row < State4  , event1      , State1                                               >
+            //  +---------+-------------+---------+---------------------+----------------------+
+        > {};
+        // Replaces the default no-transition response.
+        template <class FSM,class Event>
+        void no_transition(Event const& e, FSM&,int state)
+        {
+            std::cout << "no transition from state " << state
+                << " on event " << typeid(e).name() << std::endl;
+        }
+    };
+    // Pick a back-end
+    typedef msm::back::state_machine<my_machine_> my_machine;
+
+    //
+    // Testing utilities.
+    //
+    static char const* const state_names[] = { "State1", "State2", "State3", "State4" };
+    void pstate(my_machine const& p)
+    {
+        std::cout << " -> " << state_names[p.current_state()[0]] << std::endl;
+    }
+
+    void test()
+    {        
+		my_machine p;
+
+        // needed to start the highest-level SM. This will call on_entry and mark the start of the SM
+        // in this case it will also immediately trigger all anonymous transitions
+        p.start(); 
+        // this event will bring us back to the initial state and thus, a new "loop" will be started
+        p.process_event(event1());
+
+    }
+}
+
+int main()
+{
+    test();
+    return 0;
+}