internal override ExValue Evaluate <TKey>(TagBatchInstance <TKey> instance)
{
ExValue left = LeftHand.Evaluate(instance);
ExValue right = RightHand.Evaluate(instance);
switch (Token.TokenType)
{
case TagTokenType.IsEqual:
return(new ExValue(left.Equals(right)));
case TagTokenType.IsNot:
return(new ExValue(!left.Equals(right)));
case TagTokenType.IsLte:
return(new ExValue(left.CompareTo(right) <= 0));
case TagTokenType.IsLessThan:
return(new ExValue(left.CompareTo(right) < 0));
case TagTokenType.IsGreaterThan:
return(new ExValue(left.CompareTo(right) > 0));
case TagTokenType.IsGte:
return(new ExValue(left.CompareTo(right) >= 0));
default:
throw new InvalidOperationException();
}
}
internal override ExValue Evaluate <TKey>(TagBatchInstance <TKey> instance)
{
ExValue leftValue = LeftHand.Evaluate(instance);
bool leftResult = leftValue.ToBool();
if (IsAnd != leftResult)
{
// ((IsAnd && !leftResult) || (IsOr && leftResult))
return(leftValue);
}
return(RightHand.Evaluate(instance));
}
public NumberExpression(TagToken token)
: base(token)
{
string tv = token.Value;
if (tv.IndexOfAny(new char[] { '.', 'E', 'e' }) >= 0)
{
_value = new ExValue(double.Parse(tv));
}
else if (tv.StartsWith("0x", StringComparison.Ordinal))
{
_value = new ExValue(int.Parse(tv, System.Globalization.NumberStyles.AllowHexSpecifier));
}
else
{
_value = new ExValue(int.Parse(tv, System.Globalization.NumberStyles.AllowLeadingSign));
}
}
