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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 <boost/fusion/adapted/std_tuple.hpp>
#include <boost/fusion/include/std_tuple.hpp>
// back-end
#include "BackCommon.hpp"
//front-end
#include <boost/msm/front/state_machine_def.hpp>
// functors
#include <boost/msm/front/functor_row.hpp>
// for And_ operator
#include <boost/msm/front/operator.hpp>
#ifndef BOOST_MSM_NONSTANDALONE_TEST
#define BOOST_TEST_MODULE kleene_deferred_test
#endif
#include <boost/test/unit_test.hpp>
using namespace std;
namespace msm = boost::msm;
namespace mpl = boost::mpl;
using namespace msm::front;
namespace
{
// events
struct event1 {};
struct event2 {};
// front-end: define the FSM structure
struct fsm_ : public msm::front::state_machine_def<fsm_>
{
// 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;
// The list of FSM states
struct StateA : 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;
};
struct StateB : 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;
};
// the initial state of the player SM. Must be defined
typedef StateA initial_state;
struct is_event1
{
template <class EVT, class FSM, class SourceState, class TargetState>
bool operator()(EVT const& evt, FSM&, SourceState&, TargetState&)
{
bool is_deferred = boost::any_cast<event1>(&evt) != 0;
return is_deferred;
}
};
typedef fsm_ p; // makes transition table cleaner
// Transition table for player
struct transition_table : boost::fusion::vector<
// Start Event Next Action Guard
// +---------+-------------+---------+---------------------+----------------------+
Row < StateA , event1 , StateB , none , none >,
Row < StateB , boost::any , none , Defer , is_event1 >,
Row < StateB , event2 , StateA , none , none >
// +---------+-------------+---------+---------------------+----------------------+
>/*>::type*/ {};
// 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 mpl::vector<
#ifndef BOOST_MSM_TEST_SKIP_BACKMP11
boost::msm::backmp11::state_machine_adapter<fsm_>,
#endif // BOOST_MSM_TEST_SKIP_BACKMP11
boost::msm::back::state_machine<fsm_>,
boost::msm::back11::state_machine<fsm_>
> Fsms;
BOOST_AUTO_TEST_CASE_TEMPLATE(kleene_deferred_test, Fsm, Fsms)
{
Fsm fsm;
fsm.start();
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateA&>().entry_counter == 1,"StateA entry not called correctly");
fsm.process_event(event1());
BOOST_CHECK_MESSAGE(fsm.current_state()[0] == 1,"StateB should be active");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateA&>().exit_counter == 1,"StateA exit not called correctly");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateB&>().entry_counter == 1,"StateB entry not called correctly");
fsm.process_event(event1());
BOOST_CHECK_MESSAGE(fsm.current_state()[0] == 1, "StateB should be active");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateA&>().exit_counter == 1, "StateA exit not called correctly");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateB&>().entry_counter == 1, "StateB entry not called correctly");
fsm.process_event(event2());
BOOST_CHECK_MESSAGE(fsm.current_state()[0] == 1, "StateB should be active");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateA&>().exit_counter == 2, "StateA exit not called correctly");
BOOST_CHECK_MESSAGE(fsm.template get_state<fsm_::StateB&>().entry_counter == 2, "StateB entry not called correctly");
}
}
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