1 // Copyright 2017 Christophe Henry 2 // henry UNDERSCORE christophe AT hotmail DOT com 3 // This is an extended version of the state machine available in the boost::mpl library 4 // Distributed under the same license as the original. 5 // Copyright for the original version: 6 // Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed 7 // under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at 9 // http://www.boost.org/LICENSE_1_0.txt) 10 11 #include <iostream> 12 // back-end 13 #include <boost/msm/back/state_machine.hpp> 14 //front-end 15 #include <boost/msm/front/state_machine_def.hpp> 16 #include <boost/msm/front/functor_row.hpp> 17 18 #include <boost/test/unit_test.hpp> 19 20 namespace msm = boost::msm; 21 namespace mpl = boost::mpl; 22 using namespace boost::msm::front; 23 24 namespace 25 { 26 // events 27 struct event1 {}; 28 struct event2 {}; 29 struct event3 {}; 30 struct eventd {}; 31 32 33 // front-end: define the FSM structure 34 struct player_ : public msm::front::state_machine_def<player_> 35 { player___anon3d5cb2840111::player_36 player_() 37 :expected_action_counter(0),expected_action2_counter(0) 38 {} 39 // The list of FSM states 40 struct State11 : public msm::front::state<> 41 { 42 typedef mpl::vector<eventd> deferred_events; 43 44 template <class Event,class FSM> on_entry__anon3d5cb2840111::player_::State1145 void on_entry(Event const&,FSM& ) {++entry_counter;} 46 template <class Event,class FSM> on_exit__anon3d5cb2840111::player_::State1147 void on_exit(Event const&,FSM& ) {++exit_counter;} 48 int entry_counter; 49 int exit_counter; 50 }; 51 struct State12 : public msm::front::state<> 52 { 53 template <class Event,class FSM> on_entry__anon3d5cb2840111::player_::State1254 void on_entry(Event const&,FSM& ) {++entry_counter;} 55 template <class Event,class FSM> on_exit__anon3d5cb2840111::player_::State1256 void on_exit(Event const&,FSM& ) {++exit_counter;} 57 int entry_counter; 58 int exit_counter; 59 }; 60 struct State13 : public msm::front::state<> 61 { 62 template <class Event,class FSM> on_entry__anon3d5cb2840111::player_::State1363 void on_entry(Event const&,FSM& ) {++entry_counter;} 64 template <class Event,class FSM> on_exit__anon3d5cb2840111::player_::State1365 void on_exit(Event const&,FSM& ) {++exit_counter;} 66 int entry_counter; 67 int exit_counter; 68 }; 69 struct enqueue_action 70 { 71 template <class EVT,class FSM,class SourceState,class TargetState> operator ()__anon3d5cb2840111::player_::enqueue_action72 void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& ) 73 { 74 fsm.template process_event(event2()); 75 } 76 }; 77 struct expected_action 78 { 79 template <class EVT,class FSM,class SourceState,class TargetState> operator ()__anon3d5cb2840111::player_::expected_action80 void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& ) 81 { 82 ++fsm.expected_action_counter; 83 } 84 }; 85 struct expected_action2 86 { 87 template <class EVT,class FSM,class SourceState,class TargetState> operator ()__anon3d5cb2840111::player_::expected_action288 void operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& ) 89 { 90 ++fsm.expected_action2_counter; 91 } 92 }; 93 // the initial state of the player SM. Must be defined 94 typedef mpl::vector<State11> initial_state; 95 96 97 // Transition table for player 98 struct transition_table : mpl::vector< 99 // Start Event Next Action Guard 100 // +---------+-------------+---------+---------------------+----------------------+ 101 Row < State11 , event1 , State12 , enqueue_action >, 102 Row < State12 , event2 , State13 , expected_action2 >, 103 Row < State12 , eventd , State13 , expected_action >, 104 Row < State13 , event2 , State11 >, 105 Row < State13 , eventd , State11 > 106 // +---------+-------------+---------+---------------------+----------------------+ 107 > {}; 108 109 // Replaces the default no-transition response. 110 template <class FSM,class Event> no_transition__anon3d5cb2840111::player_111 void no_transition(Event const& , FSM&,int ) 112 { 113 BOOST_FAIL("no_transition called!"); 114 } 115 // init counters 116 template <class Event,class FSM> on_entry__anon3d5cb2840111::player_117 void on_entry(Event const&,FSM& fsm) 118 { 119 fsm.template get_state<player_::State11&>().entry_counter=0; 120 fsm.template get_state<player_::State11&>().exit_counter=0; 121 fsm.template get_state<player_::State12&>().entry_counter=0; 122 fsm.template get_state<player_::State12&>().exit_counter=0; 123 fsm.template get_state<player_::State13&>().entry_counter=0; 124 fsm.template get_state<player_::State13&>().exit_counter=0; 125 } 126 int expected_action_counter; 127 int expected_action2_counter; 128 }; 129 // Pick a back-end 130 typedef msm::back::state_machine<player_> player; 131 BOOST_AUTO_TEST_CASE(TestDeferAndMessageQueue2)132 BOOST_AUTO_TEST_CASE( TestDeferAndMessageQueue2 ) 133 { 134 player p; 135 // needed to start the highest-level SM. This will call on_entry and mark the start of the SM 136 p.start(); 137 138 p.process_event(eventd()); 139 BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"State11 should be active"); 140 BOOST_CHECK_MESSAGE(p.get_state<player_::State11&>().entry_counter == 1,"State11 entry not called correctly"); 141 142 p.process_event(event1()); 143 BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"State11 should be active"); 144 BOOST_CHECK_MESSAGE(p.get_state<player_::State11&>().exit_counter == 1,"State11 exit not called correctly"); 145 BOOST_CHECK_MESSAGE(p.get_state<player_::State12&>().entry_counter == 1,"State12 entry not called correctly"); 146 BOOST_CHECK_MESSAGE(p.get_state<player_::State12&>().exit_counter == 1,"State12 exit not called correctly"); 147 BOOST_CHECK_MESSAGE(p.get_state<player_::State11&>().entry_counter == 2,"State11 entry not called correctly"); 148 BOOST_CHECK_MESSAGE(p.get_state<player_::State13&>().exit_counter == 1,"State13 exit not called correctly"); 149 BOOST_CHECK_MESSAGE(p.get_state<player_::State13&>().entry_counter == 1,"State13 entry not called correctly"); 150 BOOST_CHECK_MESSAGE(p.expected_action_counter == 1,"expected_action should have been called"); 151 BOOST_CHECK_MESSAGE(p.expected_action2_counter == 0,"expected_action2 should not have been called"); 152 } 153 } 154 155 156