Реферат: Эффективное использование STL и шаблонов

enum Events { letter = 0, digit = 1 };

int main( int argc, char ** argv )

{

#define FSMStateType string

#define FSMEventType Events

SFiniteStateMachine< StateType,

EventType,

SEmptyFunctor<StateType,EventType>,

SThrowStrategy<EventType>

>

MyMachine(

FSMBEGIN( "empty" )

FSMSTATES "empty" << "number" << "identifier" << "unknown"

FSMEVENT(letter) "identifier" << "unknown" << "identifier" << "unknown"

FSMEVENT(digit) "number" << "number" << "identifier" << "unknown"

FSMEND

);

#undef FSMStateType

#undef FSMEventType

cout << "StartState is: " << MyMachine << endl;

MyMachine << digit << digit << letter;

cout << "The 'unknown' state is expected. Current state is: " << MyMachine << endl;

// Внимание: круглые скобки в следующей строке обязательны. Они обеспечат

// правильный порядок выполнения операторов

cout << "Reset the machine. Current state is: " << (MyMachine << ResetMachine) << endl;

MyMachine << letter << digit << letter;

cout << "The 'identifier' state is expected. Current state is: " << MyMachine << endl;

return 0;

}