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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(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&,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&,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");
- }
- }
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