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#include <tinyfsm.hpp>
#include <iostream>
// ----------------------------------------------------------------------------
// 1. Event Declarations
//
struct Toggle : tinyfsm::Event { };
// ----------------------------------------------------------------------------
// 2. State Machine Base Class Declaration
//
struct Switch : tinyfsm::MealyMachine<Switch>
{
/* pure virtual reaction (override required in all states) */
virtual void react(Toggle const &) = 0;
/* transition actions */
static void OpenCircuit() {
std::cout << "* Opening ciruit (light goes OFF)" << std::endl;
}
static void CloseCircuit() {
std::cout << "* Closing ciruit (light goes ON)" << std::endl;
}
};
// ----------------------------------------------------------------------------
// 3. State Declarations
//
struct Off; // forward declaration
struct On : Switch
{
void react(Toggle const &) override { transit<Off>(OpenCircuit); };
};
struct Off : Switch
{
void react(Toggle const &) override { transit<On>(CloseCircuit); };
};
FSM_INITIAL_STATE(Switch, Off)
// ----------------------------------------------------------------------------
// Main
//
int main()
{
Switch::start();
std::cout << "> You are facing a light switch..." << std::endl;
while(1)
{
char c;
std::cout << std::endl << "t=Toggle, q=Quit ? ";
std::cin >> c;
switch(c) {
case 't':
std::cout << "> Toggling switch..." << std::endl;
Switch::dispatch(Toggle());
break;
case 'q':
return 0;
default:
std::cout << "> Invalid input" << std::endl;
};
}
}
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