public bool Compare(byte[] data, int index, ShortScanResult previous, out ScanResult result)
{
return(CompareInternal(
data,
index,
value =>
{
switch (CompareType)
{
case ScanCompareType.Equal:
return value == Value1;
case ScanCompareType.NotEqual:
return value != Value1;
case ScanCompareType.GreaterThan:
return value > Value1;
case ScanCompareType.GreaterThanOrEqual:
return value >= Value1;
case ScanCompareType.LessThan:
return value < Value1;
case ScanCompareType.LessThanOrEqual:
return value <= Value1;
case ScanCompareType.Between:
return Value1 < value && value < Value2;
case ScanCompareType.BetweenOrEqual:
return Value1 <= value && value <= Value2;
case ScanCompareType.Changed:
return value != previous.Value;
case ScanCompareType.NotChanged:
return value == previous.Value;
case ScanCompareType.Increased:
return value > previous.Value;
case ScanCompareType.IncreasedOrEqual:
return value >= previous.Value;
case ScanCompareType.Decreased:
return value < previous.Value;
case ScanCompareType.DecreasedOrEqual:
return value <= previous.Value;
default:
throw new InvalidCompareTypeException(CompareType);
}
},
out result
));
}
public bool Compare(byte[] data, int index, out ScanResult result)
{
result = null;
var value = BitConverter.ToInt16(data, index);
bool IsMatch()
{
switch (CompareType)
{
case ScanCompareType.Equal:
return(value == Value1);
case ScanCompareType.NotEqual:
return(value != Value1);
case ScanCompareType.GreaterThan:
return(value > Value1);
case ScanCompareType.GreaterThanOrEqual:
return(value >= Value1);
case ScanCompareType.LessThan:
return(value < Value1);
case ScanCompareType.LessThanOrEqual:
return(value <= Value1);
case ScanCompareType.Between:
return(Value1 < value && value < Value2);
case ScanCompareType.BetweenOrEqual:
return(Value1 <= value && value <= Value2);
case ScanCompareType.Unknown:
return(true);
default:
throw new InvalidCompareTypeException(CompareType);
}
}
if (!IsMatch())
{
return(false);
}
result = new ShortScanResult(value);
return(true);
}
private static bool CompareInternal(byte[] data, int index, Func<short, bool> matcher, out ScanResult result)
{
result = null;
var value = BitConverter.ToInt16(data, index);
if (!matcher(value))
{
return false;
}
result = new ShortScanResult(value);
return true;
}
