can you support sub object property ?

[XIEBBS]

I want it support sub object property, it can help us to organize our input params;
such as [a] + [b]
=>

class NewObject{
public int a
public int b;
}
then we can change the expression [a] + [b] to [theObject_A.a] + [theObject_B.b]

and you can view Drools solution , you may get my words.

[bijington]

I don't know if I correctly follow your use case but you can supply values however you like to expressions. For example using something like you have above:

class NewObject
{
    public int A { get; set; }
    public int B { get; set; }
}

var expression = new Expression("[a] + [b]");

var myObject = new Object
{
    A = 10,
    B = 20
};

expression.Evaluate(
    new Dictionary<string, object>
    {
        ["a"] = myObject.A,
        ["b"] = myObject.B
    });