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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)
// back-end
#include <boost/msm/back11/state_machine.hpp>
//front-end
#include <boost/msm/front/state_machine_def.hpp>
#include <boost/msm/front/puml/puml.hpp>
#include "PumlCommon.hpp"
#ifndef BOOST_MSM_NONSTANDALONE_TEST
#define BOOST_TEST_MODULE back11_orthogonal_deferred3_with_puml_test
#endif
#include <boost/test/unit_test.hpp>
using namespace std;
namespace msm = boost::msm;
using namespace msm::front;
using namespace msm::front::puml;
namespace {
// Flags. Allow information about a property of the current state
struct PlayingPaused {};
struct CDLoaded {};
struct FirstSongPlaying {};
}
namespace boost::msm::front::puml {
// events
template<>
struct Event<by_name("NextSong")> {};
template<>
struct Event<by_name("PreviousSong")> {};
// The list of FSM states
template<>
struct State<by_name("Song1")> : public msm::front::state<>
{
typedef boost::fusion::vector<FirstSongPlaying> flag_list;
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("Song2")> : public msm::front::state<>
{
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("Song3")> : public msm::front::state<>
{
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
//actions
template<>
struct Action<by_name("start_next_song")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
void operator()(EVT const&, FSM& fsm, SourceState&, TargetState&)
{
++fsm.start_next_song_counter;
}
};
template<>
struct Action<by_name("start_prev_song")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
void operator()(EVT const&, FSM&, SourceState&, TargetState&)
{
}
};
// guard conditions
template<>
struct Guard<by_name("start_prev_song_guard")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
bool operator()(EVT const&, FSM& fsm, SourceState&, TargetState&)
{
++fsm.start_prev_song_guard_counter;
return true;
}
};
}
namespace
{
// front-end: define the FSM structure
struct playing_ : public msm::front::state_machine_def<playing_>
{
typedef boost::fusion::vector<PlayingPaused, CDLoaded> flag_list;
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
unsigned int start_next_song_counter = 0;
unsigned int start_prev_song_guard_counter = 0;
BOOST_MSM_PUML_DECLARE_TABLE(
R"(
@startuml Player
skinparam linetype polyline
state Player{
[*]-> Song1
Song1 -> Song2 : NextSong
Song2 -> Song1 : PreviousSong / start_prev_song [start_prev_song_guard]
Song2 -> Song3 : NextSong / start_next_song
Song3 -> Song2 : PreviousSong [start_prev_song_guard]
}
@enduml
)"
)
// Replaces the default no-transition response.
template <class FSM, class Event>
void no_transition(Event const&, FSM&, int)
{
BOOST_FAIL("no_transition called!");
}
};
}
namespace boost::msm::front::puml {
template<>
struct State<by_name("PlayingFsm")> : public msm::back11::state_machine<playing_>
{
};
}
namespace boost::msm::front::puml {
// events
template<>
struct Event<by_name("error_found")> {};
template<>
struct Event<by_name("end_error")> {};
template<>
struct Event<by_name("do_terminate")> {};
template<>
struct State<by_name("Paused2")> : public msm::front::state<>
{
typedef boost::fusion::vector<PlayingPaused, CDLoaded> flag_list;
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("Stopped2")> : public msm::front::state<>
{
typedef boost::fusion::vector<CDLoaded> flag_list;
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("AllOk")> : public msm::front::state<>
{
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("ErrorMode")> :
public msm::front::interrupt_state < Event<by_name("end_error")>>
{
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
template<>
struct State<by_name("ErrorTerminate")> : public msm::front::terminate_state<>
{
template <class Event, class FSM>
void on_entry(Event const&, FSM&) { ++entry_counter; }
template <class Event, class FSM>
void on_exit(Event const&, FSM&) { ++exit_counter; }
int entry_counter = 0;
int exit_counter = 0;
};
//actions
template<>
struct Action<by_name("report_error")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
void operator()(EVT const&, FSM& fsm, SourceState&, TargetState&)
{
++fsm.report_error_counter;
}
};
template<>
struct Action<by_name("report_end_error")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
void operator()(EVT const&, FSM& fsm, SourceState&, TargetState&)
{
++fsm.report_end_error_counter;
}
};
template<>
struct Action<by_name("MyDefer")>
{
// mark as deferring to avoid stack overflows in certain conditions
typedef int deferring_action;
template <class EVT, class FSM, class SourceState, class TargetState>
void operator()(EVT const&, FSM& fsm, SourceState&, TargetState&) const
{
Event<by_name("play")> e{};
fsm.defer_event(e);
}
};
// guard conditions
template<>
struct Guard<by_name("is_play_event")>
{
template <class EVT, class FSM, class SourceState, class TargetState>
bool operator()(EVT const& evt, FSM& , SourceState&, TargetState&)
{
bool is_play = boost::any_cast<Event<by_name("play")>>(&evt) != 0;
return is_play;
}
};
}
namespace
{
// front-end: define the FSM structure
struct player_ : public msm::front::state_machine_def<player_>
{
// we want deferred events and no state requires deferred events (only the fsm in the
// transition table), so the fsm does.
typedef int activate_deferred_events;
unsigned int start_playback_counter=0;
unsigned int can_close_drawer_counter=0;
unsigned int report_error_counter=0;
unsigned int report_end_error_counter=0;
BOOST_MSM_PUML_DECLARE_TABLE(
R"(
@startuml Player
skinparam linetype polyline
state Player{
[*]-> Empty
Stopped2 -> PlayingFsm : play / start_playback
Stopped2 -> Open : open_close / open_drawer
Stopped2 -> Stopped2 : stop
Open -> Empty : open_close [can_close_drawer]
Open -> Open : -play / defer
Empty --> Open : open_close / open_drawer
Empty ---> Stopped2 : cd_detected / store_cd_info
Empty -> Empty : -* / MyDefer [is_play_event]
PlayingFsm --> Stopped2 : stop / stop_playback
PlayingFsm -> Paused2 : pause / pause_playback
PlayingFsm --> Open : open_close / stop_and_open
Paused2 -> PlayingFsm : end_pause / resume_playback
Paused2 --> Stopped2 : stop / stop_playback
Paused2 --> Open : open_close / stop_and_open
--
[*]-> AllOk
AllOk -> ErrorMode : error_found / report_error
ErrorMode -> AllOk : end_error / report_end_error
AllOk -> ErrorTerminate : do_terminate
}
@enduml
)"
)
// Replaces the default no-transition response.
template <class FSM,class Event>
void no_transition(Event const&, FSM&,int)
{
BOOST_FAIL("no_transition called!");
}
};
// Pick a back-end
typedef msm::back11::state_machine<player_> player;
BOOST_AUTO_TEST_CASE( back11_orthogonal_deferred3_with_pumltest )
{
player p;
static_assert(msm::back11::get_number_of_regions<typename player::initial_state>::type::value == 2);
// needed to start the highest-level SM. This will call on_entry and mark the start of the SM
p.start();
// test deferred event
// deferred in Empty and Open, will be handled only after event cd_detected
p.process_event(Event<by_name("play")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 2, "Empty should be active"); //Empty
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Open")>&>().exit_counter == 0, "Open exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().entry_counter == 0, "Playing entry not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Empty")>&>().entry_counter == 1, "Empty entry not called correctly");
//flags
BOOST_CHECK_MESSAGE(p.is_flag_active<CDLoaded>() == false, "CDLoaded should not be active");
p.process_event(Event<by_name("open_close")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 1, "Open should be active"); //Open
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Empty")>&>().exit_counter == 1, "Empty exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Open")>&>().entry_counter == 1, "Open entry not called correctly");
p.process_event(Event<by_name("open_close")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 2, "Empty should be active"); //Empty
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Open")>&>().exit_counter == 1, "Open exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Empty")>&>().entry_counter == 2, "Empty entry not called correctly");
BOOST_CHECK_MESSAGE(p.can_close_drawer_counter == 1, "guard not called correctly");
//deferred event should have been processed
p.process_event(Event<by_name("cd_detected")>{"louie, louie"});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Empty")>&>().exit_counter == 2, "Empty exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 1, "Stopped entry not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().exit_counter == 1, "Stopped exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().entry_counter == 1, "Playing entry not called correctly");
BOOST_CHECK_MESSAGE(p.start_playback_counter == 1, "action not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().current_state()[0] == 0, "Song1 should be active");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song1")>&>().entry_counter == 1,
"Song1 entry not called correctly");
//flags
BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true, "PlayingPaused should be active");
BOOST_CHECK_MESSAGE(p.is_flag_active<FirstSongPlaying>() == true, "FirstSongPlaying should be active");
p.process_event(Event<by_name("NextSong")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().current_state()[0] == 1, "Song2 should be active");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song2")>&>().entry_counter == 1,
"Song2 entry not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song1")>&>().exit_counter == 1,
"Song1 exit not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().start_next_song_counter == 0,
"submachine action not called correctly");
p.process_event(Event<by_name("NextSong")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().current_state()[0] == 2, "Song3 should be active");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song3")>&>().entry_counter == 1,
"Song3 entry not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song2")>&>().exit_counter == 1,
"Song2 exit not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().start_next_song_counter == 1,
"submachine action not called correctly");
p.process_event(Event<by_name("PreviousSong")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().current_state()[0] == 1, "Song2 should be active");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song2")>&>().entry_counter == 2,
"Song2 entry not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().get_state<State<by_name("Song3")>&>().exit_counter == 1,
"Song3 exit not called correctly");
BOOST_CHECK_MESSAGE(
p.get_state<State<by_name("PlayingFsm")>&>().start_prev_song_guard_counter == 1,
"submachine guard not called correctly");
//flags
BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true, "PlayingPaused should be active");
BOOST_CHECK_MESSAGE(p.is_flag_active<FirstSongPlaying>() == false, "FirstSongPlaying should not be active");
p.process_event(Event<by_name("pause")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 4, "Paused should be active"); //Paused
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().exit_counter == 1, "Playing exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Paused2")>&>().entry_counter == 1, "Paused entry not called correctly");
//flags
BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true, "PlayingPaused should be active");
// go back to Playing
p.process_event(Event<by_name("end_pause")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Paused2")>&>().exit_counter == 1, "Paused exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().entry_counter == 2, "Playing entry not called correctly");
p.process_event(Event<by_name("pause")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 4, "Paused should be active"); //Paused
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().exit_counter == 2, "Playing exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Paused2")>&>().entry_counter == 2, "Paused entry not called correctly");
p.process_event(Event<by_name("stop")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 0, "Stopped should be active"); //Stopped
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Paused2")>&>().exit_counter == 2, "Paused exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 2, "Stopped entry not called correctly");
//flags
BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == false, "PlayingPaused should not be active");
BOOST_CHECK_MESSAGE(p.is_flag_active<CDLoaded>() == true, "CDLoaded should be active");
p.process_event(Event<by_name("stop")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 0, "Stopped should be active"); //Stopped
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().exit_counter == 2, "Stopped exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 3, "Stopped entry not called correctly");
//test interrupt
BOOST_CHECK_MESSAGE(p.current_state()[1] == 5, "AllOk should be active"); //AllOk
p.process_event(Event<by_name("error_found")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 6, "ErrorMode should be active"); //ErrorMode
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("AllOk")>&>().exit_counter == 1, "AllOk exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("ErrorMode")>&>().entry_counter == 1, "ErrorMode entry not called correctly");
// try generating more events
p.process_event(Event<by_name("play")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 6, "ErrorMode should be active"); //ErrorMode
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("AllOk")>&>().exit_counter == 1, "AllOk exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("ErrorMode")>&>().entry_counter == 1, "ErrorMode entry not called correctly");
BOOST_CHECK_MESSAGE(p.current_state()[0] == 0, "Stopped should be active"); //Stopped
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().exit_counter == 2, "Stopped exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 3, "Stopped entry not called correctly");
p.process_event(Event<by_name("end_error")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 5, "AllOk should be active"); //AllOk
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("ErrorMode")>&>().exit_counter == 1, "ErrorMode exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("AllOk")>&>().entry_counter == 2, "AllOk entry not called correctly");
p.process_event(Event<by_name("play")>{});
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().exit_counter == 3, "Stopped exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().entry_counter == 3, "Playing entry not called correctly");
//test terminate
BOOST_CHECK_MESSAGE(p.current_state()[1] == 5, "AllOk should be active"); //AllOk
p.process_event(Event<by_name("do_terminate")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 7, "ErrorTerminate should be active"); //ErrorTerminate
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("AllOk")>&>().exit_counter == 2, "AllOk exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("ErrorTerminate")>&>().entry_counter == 1, "ErrorTerminate entry not called correctly");
// try generating more events
p.process_event(Event<by_name("stop")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 7, "ErrorTerminate should be active"); //ErrorTerminate
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("ErrorTerminate")>&>().exit_counter == 0, "ErrorTerminate exit not called correctly");
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().exit_counter == 2, "Playing exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 3, "Stopped entry not called correctly");
p.process_event(Event<by_name("end_error")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 7, "ErrorTerminate should be active"); //ErrorTerminate
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().exit_counter == 2, "Playing exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 3, "Stopped entry not called correctly");
p.process_event(Event<by_name("stop")>{});
BOOST_CHECK_MESSAGE(p.current_state()[1] == 7, "ErrorTerminate should be active"); //ErrorTerminate
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3, "Playing should be active"); //Playing
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("PlayingFsm")>&>().exit_counter == 2, "Playing exit not called correctly");
BOOST_CHECK_MESSAGE(p.get_state<State<by_name("Stopped2")>&>().entry_counter == 3, "Stopped entry not called correctly");
}
}
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