387 lines
13 KiB
C++
387 lines
13 KiB
C++
// Copyright 2010 Christophe Henry
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// henry UNDERSCORE christophe AT hotmail DOT com
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// This is an extended version of the state machine available in the boost::mpl library
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// Distributed under the same license as the original.
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// Copyright for the original version:
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// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
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// under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <vector>
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#include <iostream>
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#include <boost/msm/back/state_machine.hpp>
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#include <boost/msm/front/euml/euml.hpp>
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using namespace std;
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using namespace boost::msm::front::euml;
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namespace msm = boost::msm;
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namespace mpl = boost::mpl;
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namespace // Concrete FSM implementation
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{
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// events
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BOOST_MSM_EUML_EVENT(event1)
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BOOST_MSM_EUML_EVENT(event2)
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BOOST_MSM_EUML_EVENT(event3)
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BOOST_MSM_EUML_EVENT(event4)
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BOOST_MSM_EUML_EVENT(event5)
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// if we need something special, like a template constructor, we cannot use the helper macros
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struct event6_impl : euml_event<event6_impl>
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{
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event6_impl(){}
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template <class Event>
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event6_impl(Event const&){}
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};
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event6_impl const event6;
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//Sub fsm state definition
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BOOST_MSM_EUML_ACTION(SubState1_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState1" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState1_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState1" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( SubState1_Entry,SubState1_Exit ),SubState1)
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BOOST_MSM_EUML_ACTION(SubState1b_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState1b" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState1b_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState1b" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( SubState1b_Entry,SubState1b_Exit ),SubState1b)
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BOOST_MSM_EUML_ACTION(SubState1c_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState1c" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState1c_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState1c" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( SubState1c_Entry,SubState1c_Exit ),SubState1c)
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BOOST_MSM_EUML_ACTION(SubState2_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState2" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState2_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState2" << std::endl;
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}
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};
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BOOST_MSM_EUML_EXPLICIT_ENTRY_STATE(0,( SubState2_Entry,SubState2_Exit ),SubState2)
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BOOST_MSM_EUML_ACTION(SubState2b_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState2b" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState2b_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState2b" << std::endl;
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}
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};
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BOOST_MSM_EUML_EXPLICIT_ENTRY_STATE(1,( SubState2b_Entry,SubState2b_Exit ),SubState2b)
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BOOST_MSM_EUML_ACTION(SubState2c_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState2c" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState2c_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState2c" << std::endl;
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}
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};
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BOOST_MSM_EUML_EXPLICIT_ENTRY_STATE(2,( SubState2c_Entry,SubState2c_Exit ),SubState2c)
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BOOST_MSM_EUML_ACTION(PseudoEntry1_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::PseudoEntry1" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(PseudoEntry1_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::PseudoEntry1" << std::endl;
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}
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};
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BOOST_MSM_EUML_ENTRY_STATE(0,( PseudoEntry1_Entry,PseudoEntry1_Exit ),PseudoEntry1)
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BOOST_MSM_EUML_ACTION(SubState3_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState3" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState3_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState3" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( SubState3_Entry,SubState3_Exit ),SubState3)
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BOOST_MSM_EUML_ACTION(SubState3b_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::SubState3b" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubState3b_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::SubState3b" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( SubState3b_Entry,SubState3b_Exit ),SubState3b)
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BOOST_MSM_EUML_ACTION(PseudoExit1_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2::PseudoExit1" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(PseudoExit1_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2::PseudoExit1" << std::endl;
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}
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};
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BOOST_MSM_EUML_EXIT_STATE(( event6,PseudoExit1_Entry,PseudoExit1_Exit ),PseudoExit1)
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// actions
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BOOST_MSM_EUML_ACTION(entry_action)
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{
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template <class FSM,class EVT,class SourceState,class TargetState>
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void operator()(FSM& ,EVT const& ,SourceState& ,TargetState& )
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{
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cout << "calling entry_action" << endl;
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}
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};
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// SubFsm definition
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BOOST_MSM_EUML_ACTION(SubFsm2_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: SubFsm2" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(SubFsm2_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: SubFsm2" << std::endl;
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}
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};
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BOOST_MSM_EUML_TRANSITION_TABLE((
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// +------------------------------------------------------------------------------+
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SubState3 == PseudoEntry1 + event4 / entry_action ,
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SubState1 == SubState2 + event6 ,
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PseudoExit1 == SubState3 + event5
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// +------------------------------------------------------------------------------+
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), SubFsm2_transition_table)
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BOOST_MSM_EUML_DECLARE_STATE_MACHINE( (SubFsm2_transition_table, //STT
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init_ << SubState1 << SubState1b << SubState1c, // Init State
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SubFsm2_Entry, // Entry
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SubFsm2_Exit
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),SubFsm2_def)
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// inherit to add some typedef
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struct SubFsm2_ : public SubFsm2_def
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{
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// these 2 states are not found in the transition table because they are accessed only through
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// a fork, so we need to create them explicitly
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typedef mpl::vector<BOOST_MSM_EUML_STATE_NAME(SubState2b),
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BOOST_MSM_EUML_STATE_NAME(SubState2c)> explicit_creation;
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};
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// back-end
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typedef msm::back::state_machine<SubFsm2_> SubFsm2_type;
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SubFsm2_type const SubFsm2;
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// Fsm state definitions
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BOOST_MSM_EUML_ACTION(State1_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: State1" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(State1_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: State1" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( State1_Entry,State1_Exit ),State1)
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BOOST_MSM_EUML_ACTION(State2_Entry)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "entering: State2" << std::endl;
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}
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};
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BOOST_MSM_EUML_ACTION(State2_Exit)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const&,FSM&,STATE& )
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{
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std::cout << "leaving: State2" << std::endl;
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}
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};
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BOOST_MSM_EUML_STATE(( State2_Entry,State2_Exit ),State2)
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// Fsm definition
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BOOST_MSM_EUML_TRANSITION_TABLE((
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// +------------------------------------------------------------------------------+
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SubFsm2 == State1 + event1 ,
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explicit_(SubFsm2,SubState2) == State1 + event2,
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(explicit_(SubFsm2,SubState2),
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explicit_(SubFsm2,SubState2b),
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explicit_(SubFsm2,SubState2c)) == State1 + event3 ,
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entry_pt_(SubFsm2,PseudoEntry1) == State1 + event4 ,
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State1 == SubFsm2 + event1 ,
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State2 == exit_pt_
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(SubFsm2,PseudoExit1) + event6
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// +------------------------------------------------------------------------------+
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),transition_table )
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BOOST_MSM_EUML_ACTION(Log_No_Transition)
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{
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template <class Event,class FSM,class STATE>
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void operator()(Event const& e,FSM&,STATE& )
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{
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std::cout << "no transition in Fsm"
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<< " on event " << typeid(e).name() << std::endl;
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}
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};
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BOOST_MSM_EUML_DECLARE_STATE_MACHINE(( transition_table, //STT
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init_ << State1, // Init State
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no_action, // Entry
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no_action, // Exit
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attributes_ << no_attributes_, // Attributes
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configure_ << no_configure_, // configuration
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Log_No_Transition // no_transition handler
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),
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Fsm_) //fsm name
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//back-end
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typedef msm::back::state_machine<Fsm_> Fsm;
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//
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// Testing utilities.
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//
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static char const* const state_names[] = { "State1", "SubFsm2","State2" };
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void pstate(Fsm const& p)
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{
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std::cout << " -> " << state_names[p.current_state()[0]] << std::endl;
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}
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void test()
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{
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Fsm p;
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// needed to start the highest-level SM. This will call on_entry and mark the start of the SM
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p.start();
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std::cout << "Simply move in and out of the composite, activate init states" << std::endl;
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p.process_event(event1); pstate(p);
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p.process_event(event1); pstate(p);
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std::cout << "Direct entry into SubFsm2::SubState2, then transition to SubState1 and back to State1" << std::endl;
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p.process_event(event2); pstate(p);
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p.process_event(event6); pstate(p);
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p.process_event(event1); pstate(p);
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std::cout << "processing fork to SubFsm2::SubState2, SubFsm2::SubState2b and SubFsm2::SubState2c" << std::endl;
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p.process_event(event3); pstate(p);
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p.process_event(event1); pstate(p);
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std::cout << "processing entry pseudo state" << std::endl;
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p.process_event(event4); pstate(p);
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p.process_event(event1); pstate(p);
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std::cout << "processing entry + exit pseudo state" << std::endl;
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p.process_event(event4); pstate(p);
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std::cout << "using exit pseudo state" << std::endl;
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p.process_event(event5); pstate(p);
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}
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}
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int main()
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{
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test();
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return 0;
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}
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