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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/back/mpl_graph_fsm_check.hpp>
- //front-end
- #include <boost/msm/front/state_machine_def.hpp>
- namespace msm = boost::msm;
- namespace mpl = boost::mpl;
- using namespace msm::back;
- namespace
- {
- // events
- struct play {};
- struct end_pause {};
- struct stop {};
- struct pause {};
- struct open_close {};
- struct cd_detected{};
- struct error_found {};
- // front-end: define the FSM structure
- struct player_ : public msm::front::state_machine_def<player_>
- {
- // The list of FSM states
- struct Empty : public msm::front::state<>
- {
- };
- struct Open : public msm::front::state<>
- {
- };
- // sm_ptr still supported but deprecated as functors are a much better way to do the same thing
- struct Stopped : public msm::front::state<>
- {
- };
- struct Playing : public msm::front::state<>
- {
- };
- // state not defining any entry or exit
- struct Paused : public msm::front::state<>
- {
- };
- struct AllOk : public msm::front::state<>
- {
- };
- struct ErrorMode : public msm::front::state<>
- {
- };
- struct State1 : public msm::front::state<>
- {
- };
- struct State2 : public msm::front::state<>
- {
- };
- // the initial state of the player SM. Must be defined
- typedef mpl::vector<Empty,AllOk> initial_state;
- // Transition table for player
- struct transition_table : mpl::vector<
- // Start Event Next Action Guard
- // +---------+-------------+---------+---------------------+----------------------+
- // adding this line makes non-reachable states and should cause a static assert
- //_row < State1 , open_close , State2 >,
- // adding this line makes non-orthogonal regions and should cause a static assert
- //_row < Paused , error_found , ErrorMode >,
- _row < Stopped , play , Playing >,
- _row < Stopped , open_close , Open >,
- _row < Stopped , stop , Stopped >,
- // +---------+-------------+---------+---------------------+----------------------+
- _row < Open , open_close , Empty >,
- // +---------+-------------+---------+---------------------+----------------------+
- _row < Empty , open_close , Open >,
- _row < Empty , cd_detected , Stopped >,
- _row < Empty , cd_detected , Playing >,
- // +---------+-------------+---------+---------------------+----------------------+
- _row < Playing , stop , Stopped >,
- _row < Playing , pause , Paused >,
- _row < Playing , open_close , Open >,
- // +---------+-------------+---------+---------------------+----------------------+
- _row < Paused , end_pause , Playing >,
- _row < Paused , stop , Stopped >,
- _row < Paused , open_close , Open >,
- _row < AllOk , error_found , ErrorMode >
- // +---------+-------------+---------+---------------------+----------------------+
- > {};
- // Replaces the default no-transition response.
- template <class FSM,class Event>
- void no_transition(Event const& e, FSM&,int state)
- {
- }
- };
- // Pick a back-end
- typedef msm::back::state_machine<player_,msm::back::mpl_graph_fsm_check> player;
- void test()
- {
- player p;
- }
- }
- int main()
- {
- test();
- return 0;
- }
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