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 Hu Chunming
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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>
// include headers that implement a archive in simple text format
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/tracking.hpp>
#include <sstream>
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)
// 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),Playing)
BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),Paused)
//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 p2;
p2.start();
BOOST_CHECK_MESSAGE(p2.get_state<BOOST_MSM_EUML_STATE_NAME(Empty)&>().get_attribute(entry_counter) == 1,
"Empty entry not called correctly");
p2.process_event(open_close());
BOOST_CHECK_MESSAGE(p2.current_state()[0] == 2,"Open should be active"); //Open
BOOST_CHECK_MESSAGE(p2.get_state<BOOST_MSM_EUML_STATE_NAME(Empty)&>().get_attribute(exit_counter) == 1,
"Empty exit not called correctly");
BOOST_CHECK_MESSAGE(p2.get_state<BOOST_MSM_EUML_STATE_NAME(Open)&>().get_attribute(entry_counter) == 1,
"Open entry not called correctly");
// test the serialization
std::ostringstream ofs;
// save fsm to archive (current state is Open)
{
boost::archive::text_oarchive oa(ofs);
// write class instance to archive
oa << p2;
}
// reload fsm in state Open
player p;
{
// create and open an archive for input
std::istringstream ifs(ofs.str());
boost::archive::text_iarchive ia(ifs);
// read class state from archive
ia >> p;
}
p.process_event(open_close());
BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Empty should be active"); //Empty
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");
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(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");
BOOST_CHECK_MESSAGE(p.get_attribute(test_fct_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");
}
}
// eliminate object tracking (even if serialized through a pointer)
// at the risk of a programming error creating duplicate objects.
// this is to get rid of warning because p is not const
BOOST_CLASS_TRACKING(player, boost::serialization::track_never)
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