Nullable types

[djrietberg]

I am looking into script-libraries turning script into runnable IL, much like yours, which is very impressive work.

I was wondering if there is away to make Yantra work with c# nullable types.
I am working on a project where YantraJS would be exremely helpfull, but where NULL is different from 0(zero).
i.e. null is no answer given whereas zero can be a valid answer, so null + 5 should be null rather then 5.
I am aware this breaks away from the JS standards, but is a requirement for my project, and inline with how C# works with nullable types. I just looking to see if anyone can see a path towards this, whithout starting (almost) from scratch.

Many thanks

[ackava]

JavaScript already has undefined and it pretty much behaves same way. You can use your C# types directly in JavaScript with YantraJS. So all Nullable can work well either way.

Can you provide source code of what you are trying to achieve?

[djrietberg]

Hi Thanks for your response, I hadn;t thought of using undefined, but having a quick look at it, using undefined results in different behaviours which makes calculations difficult. So f.e. undefined + 5 results in a string "undefined5" and undefined * 5 results in NaN.
Again I fully understand the behaviour and know this is ECMA compliant, but it is not what i am looking for. So the outcomes in the examples above that i would be looking for in both cases (null + 5) and (null * 5) would be null.
As is the case in dotnet8+

[ackava]

C# script is there which you can use, but if you want to make a new scripting language, it's lot of work. Unless your client has huge budget.

Because documenting it and maintaining will require lot of work. Also when new DotNet version comes out and something breaks it's time consuming to fix it.

We will not be making any changes to YantraJS that will fall out of scope of JavaScript Standard.

If you want us to help you in making separate project for your scripting, we can certainly provide the intel for that.

[djrietberg]

Again thanks for the reply, and as said I would never expect you to make changes to accomadate my requirements taking you offtrack :-).
Unfortunately c# script has other restriction that i cannot seem to find away around, like dynamic variable value resolution and many more. I will keep searching, and might have to split up my requirements into two to get what I need.
One last question are you aware of anyone having tried a port of the YantraJS code to dotnet 8/9?
Anyway thank you for your time, if i decide to split my requirements I will definitely look further into YantraJS as the main scripting language.

[ackava]

YantraJS latest release does run correctly on 8.0 and all unit tests have been tested, I haven't had time to run it on 9 yet, but most likely it would work correctly unless there is a breaking change with respect to basic arithmetic. .net 8 had change in behaviour of casting unit to double, so that broke some of things, but otherwise most IL generated are pretty basic.