public override object Execute(IResolver resolver)
{
object leftResult = left.Execute(resolver);
if (leftResult == null)
{
throw new Exception(String.Format("Formula error: Cannot get value of {0}.{1} because {0} is Null.",
left.ToString(), right.ToString()));
}
if (right is IdentifierNode)
{
return(resolver.GetMemberValue(leftResult, ((IdentifierNode)right).Identifier));
}
else
{
FunctionCallNode functionNode = (FunctionCallNode)right;
functionNode.DeclaringType = leftResult.GetType();
return(functionNode.Execute(leftResult, resolver));
}
}
