static void Main(string[] args)
{
var input = Console.ReadLine();
while (input != "exit")
{
var op5 = new PowerOperation();
var op4 = new DivideOperation(op5);
var op3 = new MultiplyOperation(op4);
var op2 = new SubstractOperation(op3);
var op1 = new AddOperation(op2);
Command command;
try
{
command = new Command(input);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
var result = op1.Calculate(command);
Console.Write(result == null
? $"Operation {command.Operation} is not supported"
: $"{command} = {result} \n");
input = Console.ReadLine();
}
}
/// <summary>
/// Send a power operation to the LCD device to affect the device itself or the host if it
/// is configured to do so.
/// </summary>
/// <param name="op">Currently the only supported operation is RebootLcd.</param>
public void SendPowerOperation(PowerOperation op)
{
ThrowIfNotConnected();
switch (op)
{
case PowerOperation.RebootLcd:
var data = new byte[] { 0x08, 0x12, 0x63 };
var command = new CommandPacket(CommandType.SendPowerOperation, (byte)data.Length, data);
var response = _deviceConnection?.SendReceive(command);
VerifyResponsePacket(response, CommandType.SendPowerOperation);
break;
case PowerOperation.ResetHost:
throw new NotImplementedException();
case PowerOperation.PowerOffHost:
throw new NotImplementedException();
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Calls the IOperation that corresponds to the input OperationType
/// </summary>
/// <param name="operationType">The operation to perform.</param>
public void PerformOperation(OperationType operationType)
{
IOperation operation = null;
switch (operationType)
{
case OperationType.Add:
operation = new AddOperation();
break;
case OperationType.Minus:
operation = new MinusOperation();
break;
case OperationType.Multiply:
operation = new MultiplyOperation();
break;
case OperationType.Divide:
operation = new DivideOperation();
break;
case OperationType.Negate:
operation = new NegateOperation();
break;
case OperationType.SquareRoot:
operation = new SquareRootOperation();
break;
case OperationType.Exponential:
operation = new ExponentialOperation();
break;
case OperationType.Power:
operation = new PowerOperation();
break;
case OperationType.Reciprocal:
operation = new ReciprocalOperation();
break;
case OperationType.Sine:
operation = new SineOperation();
break;
case OperationType.Cosine:
operation = new CosineOperation();
break;
case OperationType.Clear:
operation = new ClearOperation();
break;
case OperationType.Swap:
operation = new SwapOperation();
break;
case OperationType.Rotate:
operation = new RotateOperation();
break;
}
if (operation != null)
{
/*
* Exception handling is done within each class that implements IOperation.
* Refactoring to multiple operation types (e.g. BinaryOperation,
* UnaryOperation, and StackOperation) can make the code DRYer as each type
* can use similar exception handling.
*/
operation.Perform(stack);
}
}
