| // Copyright 2010 Christophe Henry |
| // henry UNDERSCORE christophe AT hotmail DOT com |
| // This is an extended version of the state machine available in the boost::mpl library |
| // Distributed under the same license as the original. |
| // Copyright for the original version: |
| // Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed |
| // under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #include <iostream> |
| #include <boost/msm/back/state_machine.hpp> |
| #include <boost/msm/front/euml/euml.hpp> |
| |
| #define BOOST_TEST_MODULE MyTest |
| #include <boost/test/unit_test.hpp> |
| |
| using namespace std; |
| using namespace boost::msm::front::euml; |
| namespace msm = boost::msm; |
| |
| namespace |
| { |
| // A "complicated" event type that carries some data. |
| enum DiskTypeEnum |
| { |
| DISK_CD=0, |
| DISK_DVD=1 |
| }; |
| // events |
| BOOST_MSM_EUML_EVENT(play) |
| BOOST_MSM_EUML_EVENT(end_pause) |
| BOOST_MSM_EUML_EVENT(stop) |
| BOOST_MSM_EUML_EVENT(pause) |
| BOOST_MSM_EUML_EVENT(open_close) |
| BOOST_MSM_EUML_EVENT(internal_evt) |
| BOOST_MSM_EUML_EVENT(to_ignore) |
| // A "complicated" event type that carries some data. |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(std::string,cd_name) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(DiskTypeEnum,cd_type) |
| BOOST_MSM_EUML_ATTRIBUTES((attributes_ << cd_name << cd_type ), cd_detected_attributes) |
| BOOST_MSM_EUML_EVENT_WITH_ATTRIBUTES(cd_detected,cd_detected_attributes) |
| |
| //states |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,entry_counter) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,exit_counter) |
| |
| BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Open) |
| BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Stopped) |
| BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Playing) |
| BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Paused) |
| |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,empty_internal_guard_counter) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,empty_internal_action_counter) |
| |
| BOOST_MSM_EUML_ACTION(internal_guard_fct) |
| { |
| template <class FSM,class EVT,class SourceState,class TargetState> |
| bool operator()(EVT const&, FSM& ,SourceState& src,TargetState& ) |
| { |
| ++src.get_attribute(empty_internal_guard_counter); |
| return false; |
| } |
| }; |
| BOOST_MSM_EUML_DECLARE_STATE((++state_(entry_counter),++state_(exit_counter), |
| attributes_ << entry_counter << exit_counter |
| << empty_internal_guard_counter << empty_internal_action_counter),Empty_def) |
| // derive to be able to add an internal transition table |
| struct Empty_impl : public Empty_def |
| { |
| Empty_impl(){} |
| BOOST_MSM_EUML_DECLARE_INTERNAL_TRANSITION_TABLE(( |
| internal_evt [internal_guard_fct] / ++source_(empty_internal_action_counter) |
| )) |
| }; |
| // declare an instance for the stt as we are manually declaring a state |
| Empty_impl const Empty; |
| |
| //fsm |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,start_playback_counter) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,can_close_drawer_counter) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,internal_action_counter) |
| BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,internal_guard_counter) |
| BOOST_MSM_EUML_ACTION(No_Transition) |
| { |
| template <class FSM,class Event> |
| void operator()(Event const&,FSM&,int) |
| { |
| BOOST_FAIL("no_transition called!"); |
| } |
| }; |
| BOOST_MSM_EUML_ACTION(good_disk_format) |
| { |
| template <class FSM,class EVT,class SourceState,class TargetState> |
| bool operator()(EVT const& evt,FSM&,SourceState& ,TargetState& ) |
| { |
| if (evt.get_attribute(cd_type)!=DISK_CD) |
| { |
| return false; |
| } |
| return true; |
| } |
| }; |
| BOOST_MSM_EUML_ACTION(internal_guard) |
| { |
| template <class FSM,class EVT,class SourceState,class TargetState> |
| bool operator()(EVT const& evt,FSM& fsm,SourceState& ,TargetState& ) |
| { |
| ++fsm.get_attribute(internal_guard_counter); |
| return false; |
| } |
| }; |
| BOOST_MSM_EUML_ACTION(internal_guard2) |
| { |
| template <class FSM,class EVT,class SourceState,class TargetState> |
| bool operator()(EVT const& evt,FSM& fsm,SourceState& ,TargetState& ) |
| { |
| ++fsm.get_attribute(internal_guard_counter); |
| return true; |
| } |
| }; |
| BOOST_MSM_EUML_TRANSITION_TABLE(( |
| Playing == Stopped + play / ++fsm_(start_playback_counter) , |
| Playing == Paused + end_pause , |
| // +------------------------------------------------------------------------------+ |
| Empty == Open + open_close / ++fsm_(can_close_drawer_counter), |
| Empty + to_ignore , |
| Empty + internal_evt [internal_guard2] / ++fsm_(internal_action_counter) , |
| Empty + cd_detected [internal_guard] , |
| // +------------------------------------------------------------------------------+ |
| Open == Empty + open_close , |
| Open == Paused + open_close , |
| Open == Stopped + open_close , |
| Open == Playing + open_close , |
| // +------------------------------------------------------------------------------+ |
| Paused == Playing + pause , |
| // +------------------------------------------------------------------------------+ |
| Stopped == Playing + stop , |
| Stopped == Paused + stop , |
| Stopped == Empty + cd_detected [good_disk_format] , |
| Stopped == Stopped + stop |
| // +------------------------------------------------------------------------------+ |
| ),transition_table) |
| |
| BOOST_MSM_EUML_DECLARE_STATE_MACHINE(( transition_table, //STT |
| init_ << Empty, // Init State |
| no_action, // Entry |
| no_action, // Exit |
| attributes_ << start_playback_counter << can_close_drawer_counter |
| << internal_action_counter << internal_guard_counter, // Attributes |
| configure_ << no_configure_, // configuration |
| No_Transition // no_transition handler |
| ), |
| player_) //fsm name |
| |
| typedef msm::back::state_machine<player_> player; |
| |
| // static char const* const state_names[] = { "Stopped", "Paused", "Open", "Empty", "Playing" }; |
| |
| |
| BOOST_AUTO_TEST_CASE( my_test ) |
| { |
| player p; |
| |
| p.start(); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(entry_counter) == 1, |
| "Empty entry not called correctly"); |
| |
| // internal events |
| p.process_event(to_ignore); |
| p.process_event(internal_evt); |
| BOOST_CHECK_MESSAGE(p.get_attribute(internal_action_counter) == 1,"Internal action not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_attribute(internal_guard_counter) == 1,"Internal guard not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(empty_internal_action_counter) == 0, |
| "Empty internal action not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(empty_internal_guard_counter) == 1, |
| "Empty internal guard not called correctly"); |
| |
| p.process_event(open_close()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 2,"Open should be active"); //Open |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(exit_counter) == 1, |
| "Empty exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(entry_counter) == 1, |
| "Open entry not called correctly"); |
| |
| p.process_event(open_close()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Empty should be active"); //Empty |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Open)&>().get_attribute(exit_counter) == 1, |
| "Open exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(entry_counter) == 2, |
| "Empty entry not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_attribute(can_close_drawer_counter) == 1,"guard not called correctly"); |
| |
| p.process_event( |
| cd_detected("louie, louie",DISK_DVD)); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Empty should be active"); //Empty |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Open)&>().get_attribute(exit_counter) == 1, |
| "Open exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(entry_counter) == 2, |
| "Empty entry not called correctly"); |
| |
| p.process_event( |
| cd_detected("louie, louie",DISK_CD)); |
| p.process_event(play); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing |
| BOOST_CHECK_MESSAGE(p.get_state<Empty_impl&>().get_attribute(exit_counter) == 2, |
| "Empty exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Stopped)&>().get_attribute(entry_counter) == 1, |
| "Stopped entry not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Stopped)&>().get_attribute(exit_counter) == 1, |
| "Stopped exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Playing)&>().get_attribute(entry_counter) == 1, |
| "Playing entry not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_attribute(start_playback_counter) == 1,"action not called correctly"); |
| |
| p.process_event(pause()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 1,"Paused should be active"); //Paused |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Playing)&>().get_attribute(exit_counter) == 1, |
| "Playing exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Paused)&>().get_attribute(entry_counter) == 1, |
| "Paused entry not called correctly"); |
| |
| // go back to Playing |
| p.process_event(end_pause()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Paused)&>().get_attribute(exit_counter) == 1, |
| "Paused exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Playing)&>().get_attribute(entry_counter) == 2, |
| "Playing entry not called correctly"); |
| |
| p.process_event(pause()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 1,"Paused should be active"); //Paused |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Playing)&>().get_attribute(exit_counter) == 2, |
| "Playing exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Paused)&>().get_attribute(entry_counter) == 2, |
| "Paused entry not called correctly"); |
| |
| p.process_event(stop()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Paused)&>().get_attribute(exit_counter) == 2, |
| "Paused exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Stopped)&>().get_attribute(entry_counter) == 2, |
| "Stopped entry not called correctly"); |
| |
| p.process_event(stop()); |
| BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Stopped)&>().get_attribute(exit_counter) == 2, |
| "Stopped exit not called correctly"); |
| BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Stopped)&>().get_attribute(entry_counter) == 3, |
| "Stopped entry not called correctly"); |
| } |
| } |
| |