CompositeEuml.cpp
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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");
}
}