static void Main(string[] args)
{
CalculatorFullBridgeWithState proc = new CalculatorFullBridgeWithState();
proc.op = CalculatorFullBridgeWithState.Ops.Add;
proc.doIt( 2);
proc.doIt( 3);
proc.doIt( 4);
proc.op = CalculatorFullBridgeWithState.Ops.Subtract;;
proc.doIt( 7);
proc.op = CalculatorFullBridgeWithState.Ops.Recall;
proc.doIt( 0);
}
public int process(int runningTotal, int value)
{
CalculatorFullBridgeWithState proc = new CalculatorFullBridgeWithState();
MyRecall recall = new MyRecall();
foreach (Step item in _list)
{
if (item._op == CalculatorFullBridgeWithState.Ops.Recall)
{
// This is why plugins are SO IMPORTANT...
// We have a hack because the abstract factory is hard coded,
// meaning we have to update the abstract factory or the state class
// It is partially ok to update the factory or state, because it is a single change.
// However, if this
// were implemented with configuration files, then only the configuration
// file would need changing. If you do not want to use the plugin
// architecture then ALWAYS have a safe back door in the state pattern
proc.useCustomOperation(recall);
}
else
{
proc.op = item._op;
}
proc.doIt(item._val);
}
return(recall._runningTotal);
}
static void Main(string[] args)
{
CalculatorFullBridgeWithState proc = new CalculatorFullBridgeWithState();
proc.op = CalculatorFullBridgeWithState.Ops.Add;
proc.doIt(2);
proc.doIt(3);
proc.doIt(4);
proc.op = CalculatorFullBridgeWithState.Ops.Subtract;;
proc.doIt(7);
proc.useCustomOperation(new FormulaToOperationsAdaptor());
proc.doIt(4);
proc.op = CalculatorFullBridgeWithState.Ops.Recall;
proc.doIt(0);
}
