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107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
// Copyright 2024 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 <iostream>
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// back-end
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#include <boost/msm/back11/state_machine.hpp>
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//front-end
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#include <boost/msm/front/functor_row.hpp>
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#include <boost/msm/front/state_machine_def.hpp>
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#ifndef BOOST_MSM_NONSTANDALONE_TEST
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#define BOOST_TEST_MODULE back11_many_deferred_transitions
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#endif
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#include <boost/test/unit_test.hpp>
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namespace msm = boost::msm;
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namespace msmf = boost::msm::front;
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namespace mpl = boost::mpl;
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namespace
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{
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// ----- Events
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struct Event1 {};
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struct Event2 {};
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struct Event3 {};
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struct Event4 {};
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// ----- State machine
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struct Sm1_ :msmf::state_machine_def<Sm1_> {
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// States
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struct State1 :msmf::state<> {
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template <class Event, class Fsm>
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void on_entry(Event const&, Fsm&) const {
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}
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};
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struct State2 :msmf::state<> {
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template <class Event, class Fsm>
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void on_entry(Event const&, Fsm&) const {
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}
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};
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struct State3 :msmf::state<> {
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template <class Event, class Fsm>
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void on_entry(Event const&, Fsm&) const {
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}
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};
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struct State4 :msmf::state<> {
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template <class Event, class Fsm>
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void on_entry(Event const&, Fsm&) const {
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}
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};
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struct State5 :msmf::state<> {
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template <class Event, class Fsm>
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void on_entry(Event const&, Fsm&) const {
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}
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};
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// Set initial state
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typedef State1 initial_state;
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// Enable deferred capability
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typedef int activate_deferred_events;
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// Transition table
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struct transition_table :mpl::vector<
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// Start Event Next Action Guard
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msmf::Row < State1, Event1, msmf::none, msmf::Defer>,
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msmf::Row < State1, Event2, msmf::none, msmf::Defer>,
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msmf::Row < State1, Event3, msmf::none, msmf::Defer>,
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msmf::Row < State1, Event4, State2 , msmf::none>,
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msmf::Row < State2, Event3, msmf::none, msmf::Defer>,
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msmf::Row < State2, Event1, msmf::none, msmf::Defer>,
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msmf::Row < State2, Event2, State3 , msmf::none>,
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msmf::Row < State3, Event1, State4 , msmf::none>,
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msmf::Row < State3, Event3, State5 , msmf::none>,
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msmf::Row < State4, Event3, State5 , msmf::none>,
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msmf::Row < State5, Event1, State4 , msmf::none>
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> {};
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template <class Fsm, class Event>
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void no_transition(Event const&, Fsm&, int /*state*/) {
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}
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};
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// Pick a back-end
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typedef msm::back11::state_machine<Sm1_> Sm1;
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BOOST_AUTO_TEST_CASE(back11_many_deferred_transitions)
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{
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Sm1 sm1;
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sm1.start();
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sm1.process_event(Event1());
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sm1.process_event(Event2());
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sm1.process_event(Event3());
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sm1.process_event(Event4());
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BOOST_CHECK_MESSAGE(sm1.current_state()[0] == 4, "State5 should be active");
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}
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}
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