public override EvaluationResult ComparisonOperator(EvaluationResult value, EvaluationResult other)
{
return(Error("Boolean values can only be compared to other boolean values"));
}
protected EvaluationResult Result(object value)
{
return(EvaluationResult.Result(value));
}
protected EvaluationResult Error(string message)
{
return(EvaluationResult.Error(message));
}
public abstract EvaluationResult ComparisonOperator(EvaluationResult value, EvaluationResult other);
public abstract EvaluationResult LogicalOr(EvaluationResult value, EvaluationResult other);
public override EvaluationResult LogicalOr(EvaluationResult value, EvaluationResult other)
{
return(value);
}
public abstract EvaluationResult EqualityOperator(EvaluationResult value, EvaluationResult other);
public override EvaluationResult ComparisonOperator(EvaluationResult value, EvaluationResult other)
{
return(value);
}
public override EvaluationResult EqualityOperator(EvaluationResult value, EvaluationResult other)
{
return(value);
}
public override EvaluationResult ComparisonOperator(EvaluationResult value, EvaluationResult other)
{
return(Error("'null' values can not be compared"));
}
public override EvaluationResult EqualityOperator(EvaluationResult value, EvaluationResult other)
{
return(Result(value.IsNull && other.IsNull));
}
public override EvaluationResult LogicalAnd(EvaluationResult value, EvaluationResult other)
{
return(other);
}