106         struct Playing_ : public msm::front::state_machine_def<Playing_>  struct
109             typedef mpl::vector2<PlayingPaused,CDLoaded>        flag_list;
112             void on_entry(Event const&,FSM& ) {++entry_counter;}  in on_entry()
114             void on_exit(Event const&,FSM& ) {++exit_counter;}  in on_exit()
115             int entry_counter;
116             int exit_counter;
117             unsigned int start_next_song_counter;
118             unsigned int start_prev_song_guard_counter;
120             Playing_():  in Playing_()  function
126             struct Song1 : public msm::front::state<>
137             struct Song2 : public msm::front::state<>
146             struct Song3 : public msm::front::state<>
156             typedef Song1 initial_state;
158             void start_next_song(NextSong const&)       {++start_next_song_counter; }  in start_next_song()
159             void start_prev_song(PreviousSong const&)       {  }  in start_prev_song()
161 …ol start_prev_song_guard(PreviousSong const&)       {++start_prev_song_guard_counter;return true; }  in start_prev_song_guard()
163             typedef Playing_ pl; // makes transition table cleaner
165             struct transition_table : mpl::vector4<
176             void no_transition(Event const&, FSM&,int)  in no_transition()