scala-native/scala-native

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Adam Warski

@adamw

yeah I brought the ! back, putting them in ()

but tests still fail ;)

maybe somebody will have some idea on what I broke here: softwaremill/sttp@5af98b1

I'm getting a lot of java.lang.RuntimeException: Command failed with status URL_MALFORMAT

Maybe @pcejrowski , who originally wrote the code? :)

Richard Whaling

@rwhaling

my hunch is that curl_setopt is mangling the url

Richard Whaling

@rwhaling

oddly, curl_setopt is actually a vararg function, although it only ever takes 3 arguments

and SN 0.4 had some breaking changes to vararg handling

Adam Warski

@adamw

as far as I can see it delegates to

@name("curl_easy_setopt")
  def setopt(handle: Ptr[Curl], option: CInt, parameter: Any): CInt = extern

so no varargs

but maybe sth else changed...

Richard Whaling

@rwhaling

yeah that's the weird thing -

https://github.com/curl/curl/blob/master/lib/setopt.c#L2762

SN 0.4 totally reworked vararg handling along with the C interop, and it changed how some of these edge cases get handled.

you could try something like parameter: Ptr[Byte], but then you'll either need to do a gross cast on int/flag arguments,

or you can define two different bindings to the same C function:

@name("curl_easy_setopt")
  def setopt_int(handle: Ptr[Curl], option: CInt, parameter: Int): CInt = extern

@name("curl_easy_setopt")
  def setopt_ptr(handle: Ptr[Curl], option: CInt, parameter: Ptr[Byte]): CInt = extern

but both are a bit intrusive, might be worth verifying the underlying cause if possible

Adam Warski

@adamw

@rwhaling thanks a lot for your help, but unfortunately I can't get this to work

I've disable the scala-native backend for now, though if anybody would like to work on re-enabling it, I've created an issue: softwaremill/sttp#376

Richard Whaling

@rwhaling

thanks for taking a look @adamw!

Adam Fraser

@adamgfraser

Is there a Scala Native implementation for java-time?

Or a way to use one of the ScalaJS ones?

Richard Whaling

@rwhaling

I think @ekrich has worked on that some

Lorenzo Gabriele

@lolgab

Hi @adamgfraser You can give a look at this: https://github.com/akka-js/scalanative-java-time What version of SN are you using?

Adam Fraser

@adamgfraser

@lolgab 0.4.0-M2

Adam Fraser

@adamgfraser

Looks like it is only published for 0.3. Would it be possible to publish a version for 0.4? Or @rwhaling should we consider downgrading to 0.3 in ZIO? I don't know how much we are giving up by doing that.

Richard Whaling

@rwhaling

@adamgfraser I don't think downgrading to 0.3 will work - we added a bunch of stuff in the 0.4 series to support Zio

it probably makes the most sense to get an 0.4.0-M2 version of that time library published, even if it's from a fork - most of the SN community has moved to 0.4.0-M2 already

Eric K Richardson

@ekrich

@adamgfraser I use the Scala.js version to make up for some small missing pieces needed for the ekrich/sconfig project. I added the few pieces needed to Scala Native but this is a temporary solution. @LeeTibbert and I have talked to @cquiroz about his library https://github.com/cquiroz/scala-java-time as well but there are locale or other issues making it hard to port to Scala Native and keeping JVM support seems to be a goal of his project. Maybe the best approach is to make https://github.com/scala-js/scala-js-java-time work with both JS and Native if @sjrd agrees.

Sébastien Doeraene

@sjrd

scala-js-java-time is sort of on life support. cquiroz's scala-java-time is more complete, I believe.

Eric K Richardson

@ekrich

@sjrd Ok, good to know - we only really need one but scala-js-java-time is working fine for me. I was thinking that because everytime we looked into it for Scala Native there was a blocker given his library was used on JVM pre version 8 when java.time was introduced.

Adam Fraser

@adamgfraser

Yes. ZIO moved from scala-js-time to -scala-java-time because of the lack of support in scala-js-java-time for some of the data types we were using, particularly ZoneId if I remember correctly.

So I think at least for ZIO this is a blocker in providing support for Scala Native. We have the minimal support thanks to the fantastic work of @rwhaling but if users actually want to do anything with it they are going to need a java-time dependency that works on Scala Native which it sounds like we don't have right now.

Eric K Richardson

@ekrich

Thanks for the info.

Corey O'Connor

@coreyoconnor

Is there a small task (dev or review) I can contribute to? I checkout out: https://github.com/scala-native/scala-native/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22 tho that seems out of date :)

Eric K Richardson

@ekrich

Yeah, that one is still in limbo and some of the methods could be added to Scala.js as well. I put a comment on that one.

Corey O'Connor

@coreyoconnor

@ekrich OK. I see the reference to scala-native/scala-native#1653
I'll see about getting that working :) I'm still somehwat out of commission so no promises tho :(

Eric K Richardson

@ekrich

There are probably more fun things to work on - you had just mentioned that PR and when I looked I saw that there were no references to the work I started. I just had other things I was working on so hadn't gone back to it.

Corey O'Connor

@coreyoconnor

Looks to be: Analyze and measure the load method. In particular on allocation behavior. Optimise (add tests as required). Correct?

that's pretty fun for me ;)

Eric K Richardson

@ekrich

I upgraded SBLAS to 0.4.0-M2 https://github.com/ekrich/sblas/releases/tag/v0.2.0

Also, stensorflow got an update but since it requires native C code - it would have to wait for - scala-native/scala-native#1637

Here, https://github.com/ekrich/stensorflow/tree/topic/native04

Lorenzo Gabriele

@lolgab

Good stuff Eric :)

Do you plan to write some Value classes interface around sblas?

Eric K Richardson

@ekrich

I would like to but it seems it would be a pretty big project and I would need to study what has been done in that space too.

https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/linalg/BLAS.scala

LeeTibbert

@LeeTibbert

re: cquiroz's scala-java-time is more complete At the top of the parabola, I had the core of @cquiroz 's scala-native-time working with scala-native in a private sandbox. As I spent more time to implement the missing functions in the outstanding Issue,

LeeTibbert

@LeeTibbert

ran up against the fact that, IMHO, any version of code which would pass review would require Java default methods in traits. Those are implemented in Scala 2.12 JVM but not in SN. Scalatest was pending, but not released, for SN then. Scalatest might be
available now.

It looked to me like some SN code would be needed to access the Olson time files directly, where available (in libmumble.so). From
a "not having done a trial implementation" view from afar, it looked like a Small Matter of Programming.

As I noted in the Issue, these days the issue is on the back burner for me.

More like, in the refrigerator than on the stove at all.

Eric K Richardson

@ekrich

@LeeTibbert The concern I have is that today only a JS and Native version is needed not one for the JVM for Java 6 and Java 7 so we really need one geared towards only those 2 platforms. I don't see a logical solution without a fork or an enhancement of the Scala.js version.

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