public override Type GetResultType(IResolver resolver)
{
Type leftType = left.GetResultType(resolver);
IdentifierNode identifierNode = right as IdentifierNode;
if (identifierNode != null)
{
return(resolver.GetMemberType(leftType, identifierNode.Identifier));
}
else
{
FunctionCallNode functionNode = (FunctionCallNode)right;
functionNode.DeclaringType = leftType;
return(functionNode.GetResultType(resolver));
}
}
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));
}
}
public override void Validate(IResolver resolver)
{
left.Validate(resolver);
Type leftType = left.GetResultType(resolver);
IdentifierNode identifierNode = right as IdentifierNode;
if (identifierNode != null)
{
resolver.GetMemberType(leftType, identifierNode.Identifier);
return;
}
FunctionCallNode functionNode = right as FunctionCallNode;
if (functionNode != null)
{
functionNode.DeclaringType = left.GetResultType(resolver);
return;
}
}