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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>
- // back-end
- #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>
- namespace msm = boost::msm;
- using namespace boost::msm::front::euml;
- namespace
- {
- // events
- BOOST_MSM_EUML_EVENT(event1)
- // The list of FSM 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),State1)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),State2)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),State3)
- BOOST_MSM_EUML_STATE(( ++state_(entry_counter),++state_(exit_counter),attributes_ << entry_counter << exit_counter),State4)
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,state2_to_state3_counter)
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,state3_to_state4_counter)
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,always_true_counter)
- BOOST_MSM_EUML_DECLARE_ATTRIBUTE(unsigned int,always_false_counter)
- // transition actions
- BOOST_MSM_EUML_ACTION(State2ToState3)
- {
- template <class FSM,class EVT,class SourceState,class TargetState>
- void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
- {
- ++fsm.get_attribute(state2_to_state3_counter);
- }
- };
- BOOST_MSM_EUML_ACTION(State3ToState4)
- {
- template <class FSM,class EVT,class SourceState,class TargetState>
- void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& )
- {
- ++fsm.get_attribute(state3_to_state4_counter);
- }
- };
- // guard conditions
- BOOST_MSM_EUML_ACTION(always_true)
- {
- template <class FSM,class EVT,class SourceState,class TargetState>
- bool operator()(EVT const&,FSM& fsm,SourceState& ,TargetState& )
- {
- ++fsm.get_attribute(always_true_counter);
- return true;
- }
- };
- BOOST_MSM_EUML_ACTION(always_false)
- {
- template <class FSM,class EVT,class SourceState,class TargetState>
- bool operator()(EVT const&,FSM& fsm,SourceState& ,TargetState& )
- {
- ++fsm.get_attribute(always_false_counter);
- return false;
- }
- };
- 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_TRANSITION_TABLE((
- State2 == State1 ,
- State3 == State2 / State2ToState3,
- State4 == State3 [always_true] / State3ToState4,
- State4 == State3 [always_false],
- State1 == State4 + event1
- // +------------------------------------------------------------------------------+
- ),transition_table)
- // create a state machine "on the fly"
- BOOST_MSM_EUML_DECLARE_STATE_MACHINE(( transition_table, //STT
- init_ << State1, // Init State
- no_action, // Entry
- no_action, // Exit
- attributes_ << state2_to_state3_counter << state3_to_state4_counter
- << always_true_counter << always_false_counter, // Attributes
- configure_ << no_configure_, // configuration
- No_Transition // no_transition handler
- ),
- my_machine_) //fsm name
- // Pick a back-end
- typedef msm::back::state_machine<my_machine_> my_machine;
- //static char const* const state_names[] = { "State1", "State2", "State3", "State4" };
- BOOST_AUTO_TEST_CASE( my_test )
- {
- my_machine p;
- // needed to start the highest-level SM. This will call on_entry and mark the start of the SM
- // in this case it will also immediately trigger all anonymous transitions
- p.start();
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"State4 should be active"); //State4
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State1)&>().get_attribute(exit_counter) == 1,
- "State1 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State1)&>().get_attribute(entry_counter) == 1,
- "State1 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State2)&>().get_attribute(exit_counter) == 1,
- "State2 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State2)&>().get_attribute(entry_counter) == 1,
- "State2 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State3)&>().get_attribute(exit_counter) == 1,
- "State3 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State3)&>().get_attribute(entry_counter) == 1,
- "State3 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State4)&>().get_attribute(entry_counter)== 1,
- "State4 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(always_true_counter) == 1,"guard not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(always_false_counter) == 1,"guard not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(state2_to_state3_counter) == 1,"action not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(state3_to_state4_counter) == 1,"action not called correctly");
- // this event will bring us back to the initial state and thus, a new "loop" will be started
- p.process_event(event1);
- BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"State4 should be active"); //State4
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State1)&>().get_attribute(exit_counter) == 2,
- "State1 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State1)&>().get_attribute(entry_counter) == 2,
- "State1 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State2)&>().get_attribute(exit_counter) == 2,
- "State2 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State2)&>().get_attribute(entry_counter) == 2,
- "State2 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State3)&>().get_attribute(exit_counter) == 2,
- "State3 exit not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State3)&>().get_attribute(entry_counter) == 2,
- "State3 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_state<BOOST_MSM_EUML_STATE_NAME(State4)&>().get_attribute(entry_counter)== 2,
- "State4 entry not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(always_true_counter) == 2,"guard not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(always_false_counter) == 2,"guard not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(state2_to_state3_counter) == 2,"action not called correctly");
- BOOST_CHECK_MESSAGE(p.get_attribute(state3_to_state4_counter) == 2,"action not called correctly");
- }
- }
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