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- // 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>
- #ifndef BOOST_MSM_NONSTANDALONE_TEST
- #define BOOST_TEST_MODULE MyTest
- #endif
- #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(next_song)
- BOOST_MSM_EUML_EVENT(previous_song)
- BOOST_MSM_EUML_EVENT(region2_evt)
- // 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),Empty)
- 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),Paused)
- // Playing is now a state machine itself.
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,start_next_song_counter)
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,start_prev_song_guard_counter)
- // It has 5 substates
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Song1)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Song2)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Song3)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Region2State1)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Region2State2)
- // Playing has a transition table
- BOOST_MSM_EUML_TRANSITION_TABLE((
- // +------------------------------------------------------------------------------+
- Song2 == Song1 + next_song ,
- Song1 == Song2 + previous_song [True_()] / ++fsm_(start_prev_song_guard_counter) ,
- Song3 == Song2 + next_song / ++fsm_(start_next_song_counter) ,
- Song2 == Song3 + previous_song [True_()] / ++fsm_(start_prev_song_guard_counter) ,
- Region2State2 == Region2State1 + region2_evt
- // +------------------------------------------------------------------------------+
- ),playing_transition_table )
- BOOST_MSM_EUML_DECLARE_STATE_MACHINE( (playing_transition_table, //STT
- init_ << Song1 << Region2State1, // Init State
- ++state_(entry_counter), // Entry
- ++state_(exit_counter), // Exit
- attributes_ << entry_counter << exit_counter
- << start_next_song_counter
- << start_prev_song_guard_counter // Attributes
- ),Playing_)
- // choice of back-end
- typedef msm::back::state_machine<Playing_> Playing_type;
- Playing_type const Playing;
- //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,test_fct_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_TRANSITION_TABLE((
- Playing == Stopped + play / (++fsm_(start_playback_counter),++fsm_(test_fct_counter) ),
- Playing == Paused + end_pause ,
- // +------------------------------------------------------------------------------+
- Empty == Open + open_close / ++fsm_(can_close_drawer_counter),
- // +------------------------------------------------------------------------------+
- 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 ||
- (event_(cd_type)==Int_<DISK_CD>())] / process_(play) ,
- 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 << test_fct_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<BOOST_MSM_EUML_STATE_NAME(Empty)&>().get_attribute(entry_counter) == 1,
- "Empty entry 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<BOOST_MSM_EUML_STATE_NAME(Empty)&>().get_attribute(exit_counter) == 1,
- "Empty exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Open)&>().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<BOOST_MSM_EUML_STATE_NAME(Empty)&>().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<BOOST_MSM_EUML_STATE_NAME(Empty)&>().get_attribute(entry_counter) == 2,
- "Empty entry not called correctly");
- p.process_event(
- cd_detected("louie, louie",DISK_CD));
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(Empty)&>().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<Playing_type&>().get_attribute(entry_counter) == 1,
- "Playing entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(start_playback_counter) == 1,"action not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(test_fct_counter) == 1,"action not called correctly");
- p.process_event(next_song);
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing
- BOOST_CHECK_MESSAGE(p.get_state<Playing_type&>().current_state()[0] == 1,"Song2 should be active");
- BOOST_CHECK_MESSAGE(p.get_state<Playing_type&>().current_state()[1] == 3,"Region2State1 should be active");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Region2State1)&>().get_attribute(entry_counter) == 1,
- "Region2State1 entry not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song2)&>().get_attribute(entry_counter) == 1,
- "Song2 entry not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song1)&>().get_attribute(exit_counter) == 1,
- "Song1 exit not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_attribute(start_next_song_counter) == 0,
- "submachine action not called correctly");
- p.process_event(next_song);
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing
- BOOST_CHECK_MESSAGE(p.get_state<Playing_type&>().current_state()[0] == 2,"Song3 should be active");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song3)&>().get_attribute(entry_counter) == 1,
- "Song3 entry not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song2)&>().get_attribute(exit_counter) == 1,
- "Song2 exit not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_attribute(start_next_song_counter) == 1,
- "submachine action not called correctly");
- p.process_event(previous_song);
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Playing should be active"); //Playing
- BOOST_CHECK_MESSAGE(p.get_state<Playing_type&>().current_state()[0] == 1,"Song2 should be active");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song2)&>().get_attribute(entry_counter) == 2,
- "Song2 entry not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Song3)&>().get_attribute(exit_counter) == 1,
- "Song3 exit not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_attribute(start_prev_song_guard_counter) == 1,
- "submachine guard not called correctly");
- BOOST_CHECK_MESSAGE(
- p.get_state<Playing_type&>().get_state<BOOST_MSM_EUML_STATE_NAME(Region2State2)&>().get_attribute(entry_counter) == 0,
- "Region2State2 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<Playing_type&>().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<Playing_type&>().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<Playing_type&>().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");
- }
- }
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