public RemarkStateMachine(FileManager fileManager)
{
CurrentState = RemarkMachineState.START;
transitions = new Dictionary <RemarkStateTransition, RemarkMachineState>
{
{ new RemarkStateTransition(RemarkMachineState.START, TokenType.END), RemarkMachineState.START },
{ new RemarkStateTransition(RemarkMachineState.START, TokenType.REMARK), RemarkMachineState.REMARK },
{ new RemarkStateTransition(RemarkMachineState.REMARK, TokenType.END), RemarkMachineState.START },
};
this.command = new RemarkCommand(fileManager);
}
public RemarkMachineState GetNext(Token token)
{
RemarkMachineState nextState = this.CurrentState;
RemarkStateTransition transition = new RemarkStateTransition(CurrentState, token.Type);
if ((this.CurrentState == RemarkMachineState.REMARK && token.Type == TokenType.END || this.CurrentState == RemarkMachineState.START) && !transitions.TryGetValue(transition, out nextState))
{
throw new Exception("Invalid transition: " + CurrentState + " -> " + nextState + "\n" + token.Text + " " + token.Type);
}
Console.WriteLine("P: " + this.CurrentState + " -> " + nextState + ": " + token.Text);
return(nextState);
}
public RemarkStateTransition(RemarkMachineState currentState, TokenType token)
{
this.CurrentState = currentState;
this.Token = token;
}
public void MoveToNextState(Token token)
{
RemarkMachineState nextState = GetNext(token);
this.CurrentState = nextState;
}