public override AbstractExpressionNode Optimize()
{
LeftOperand = LeftOperand.Optimize();
RightOperand = RightOperand.Optimize();
var leftLit = LeftOperand as LiteralNode;
var rightLit = RightOperand as LiteralNode;
if (leftLit != null && rightLit != null)
{
switch (Operator)
{
case OperatorType.Add: return(new LiteralNode(leftLit.Value + rightLit.Value));
case OperatorType.Mul: return(new LiteralNode(leftLit.Value * rightLit.Value));
case OperatorType.Sub: return(new LiteralNode(leftLit.Value - rightLit.Value));
case OperatorType.Div: return(new LiteralNode(leftLit.Value / rightLit.Value));
case OperatorType.BitwiseAnd: return(new LiteralNode((int)leftLit.Value & (int)rightLit.Value));
case OperatorType.BitwiseOr: return(new LiteralNode((int)leftLit.Value | (int)rightLit.Value));
case OperatorType.AndAlso: return(new LiteralNode(leftLit.Value != 0 && rightLit.Value != 0));
case OperatorType.OrElse: return(new LiteralNode(leftLit.Value != 0 || rightLit.Value != 0));
case OperatorType.Mod: return(new LiteralNode(leftLit.Value % rightLit.Value));
case OperatorType.Greater: return(new LiteralNode(leftLit.Value > rightLit.Value));
case OperatorType.NotGreater: return(new LiteralNode(leftLit.Value <= rightLit.Value));
case OperatorType.Less: return(new LiteralNode(leftLit.Value < rightLit.Value));
case OperatorType.NotLess: return(new LiteralNode(leftLit.Value >= rightLit.Value));
case OperatorType.Equals: return(new LiteralNode(leftLit.Value == rightLit.Value));
case OperatorType.NotEquals: return(new LiteralNode(leftLit.Value != rightLit.Value));
case OperatorType.Pow: return(new LiteralNode((float)Math.Pow(leftLit.Value, rightLit.Value)));
}
}
return(this);
}