120 lines
4.8 KiB
C++
120 lines
4.8 KiB
C++
// 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;
|
|
}
|