kotlinlang #scripting

@apatrida Sorry, seems we messed up things while migrating to gradle, at least with json and jna. I believe that jetbrains.annotations was in the old one too. (BTW, what are the problems with the latter?) I’ll try to figure out how to fix it asap.

apatrida

11/21/2017, 12:57 AM

@holgerbrandl releases above that may affect you ^^

tlaukkan

11/21/2017, 8:13 PM

Hi, does kotlin REPL have a way to safely sandbox an enduser provided script. For example set what variables are available for the script and which functions/classes etc are available? Or should this be done with keplin?

katien

11/21/2017, 10:54 PM

downgraded to Java 8, fixed the issue. Thanks for pointing me in the right direction @mkobit

irus

12/07/2017, 9:08 AM

@ilya.chernikov Because of fatjat (kotlin-compiler) I have a lot of issues with IDE when using kotlin-script-util with kotlinx.coroutines. Is it possible to stop using fat jar or at least use custom class loader as it done in spring boot?

mkobit

01/24/2018, 2:32 AM

has anybody built a way to hot reload a running repl?

kenkyee

02/03/2018, 3:30 PM

Error I get is: com.beust.klaxon.KlaxonException: Don't know how to convert description,duration,isGeneralEvent,isPublished,name,roomIds,startTime,updatedAt,updatedBy

tradunsky

02/20/2018, 8:24 PM

Hi everyone, A quick question: is it possible to make my own engine based on KotlinJsr223JvmScriptEngineBase to use given classloader for its results?

dector

03/06/2018, 12:24 PM

Hi. Is this right place to ask questions about kscript?

:yes: 4

cedric

03/06/2018, 9:18 PM

Never mind, figured it out

cedric

03/07/2018, 5:16 AM

Calling

engine.eval()

on a small script is taking over six seconds, consistently. This looks crazy to me, is there any way to at least turn on some incremental compilation from the engine?

cedric

03/07/2018, 6:01 AM

@jkbbwr FYI this is what I'm playing with: https://github.com/cbeust/konfig

Sola

03/20/2018, 11:05 PM

why I can't use

return

kts

scripts?

bsideup

03/24/2018, 1:12 PM

Hi! Is it possible to enforce script to use only Kotlin’s Stdlib and avoid any Java/JS/Native classes? (While keeping JVM as a target)

Gary Tierney

04/04/2018, 10:40 PM

and it seems like I can just do:

mkdir -p 'META-INF/kotlin/script/templates' && touch META-INF/kotlin/script/templates/my.package.ScriptTemplateClass

SrSouza

04/07/2018, 2:39 PM

Hi @ilya.chernikov, i can use the experimental new API for scripting now? what artifacts i need use? i'm using the older version of script, the Script Definition Template and the artifact org.jetbrains.kotlin:kotlin-script-runtime. How i make IntelliJ resolve the script file?

mplacona

04/14/2018, 9:35 PM

hey, trying to dynamically evaluate scripts on a Kotlin file and doing:

val engine = ScriptEngineManager().getEngineByExtension("kts")

Always returns

null

. Anyone has any ideas why?

gildor

04/20/2018, 3:27 PM

Is there any news/propоsals/keep about implementation details of upcoming Kotlin scripting dependencies management?

SrSouza

05/09/2018, 12:07 AM

@ilya.chernikov have any plan on the future make a plugin for Atom to work with Scripting support?

nekoinemo

05/20/2018, 7:11 PM

Hi. Is there currently any way to make IDE "see" certain properties/functions as being available in script inside .kts file? To elaborate - when script is run with JSR-223, it will have

val bindings: Bindings

available in its context. However, when editing a .kts file there doesn't seem to be obvious way to inform IDE about that, short of writing

val bindings: Bindings = SimpleBindings()

at the beginning of the file and commenting it out before compiling.

Gary Tierney

05/29/2018, 11:20 AM

@ilya.chernikov should we expect to see an updated KEEP in time for 1.2.50's official release? Working on some small example docs of my own at the moment.

sdeleuze

05/29/2018, 3:37 PM

Or is there a way to precompile kts file with the regular Gradle compiler (like kt files) in order to make the compiler optional and use it just for advanced use cases (dynamic or remote kts loading) ?

holgerbrandl

06/06/2018, 7:44 AM

Hi @nastelaz, I somehow was under the impression that running scripts against project dependencies was fixed for 1.2.50+. But when running with 1.2.50-eap-62-IJ2018.1-1 it still seems broken (see screenshot). I guess the corresponding ticket is https://youtrack.jetbrains.com/issue/KT-11618 . Am I using the wrong version of the plugin?

ilya.chernikov

06/13/2018, 9:29 PM

The release 1.2.50 with new experimental scripting support is out, and the KEEP (https://github.com/Kotlin/KEEP/blob/scripting/proposals/scripting-support.md) is updated too, reflecting now the approach taken and the implementation state. Any feedback will be highly appreciated.

❤️ 1

👍 6

karelpeeters

06/13/2018, 10:01 PM

This might be a dumb question, but how does it actually work behind the scenes? The proposal contains a lot of details of how to use it, the returned interfaces etc but what actually happens at runtime on the different platforms?

deviant

06/18/2018, 3:28 PM

https://github.com/holgerbrandl/kscript this lib allows to use

//DEPS

syntax to declare dependencies. is there such feature in kotlin compiler?

🙂 1

irus

06/23/2018, 1:38 PM

Any way to get script absolute path? Like $0 in bash

sdeleuze

07/03/2018, 8:26 AM

@ilya.chernikov I am trying to leverage new scripting support in Spring Fu, but I can't make it work like I need. At some point you said that

*.kts

files will be compiled automatically. I have a

src/main/resources/application.kts

file that is defining

val foo = ...

and I would like to access

foo

from my

src/main/kotlin

source code. Is that use case supported? Does it require specific configuration?

Title

sdeleuze

07/03/2018, 8:26 AM

@ilya.chernikov I am trying to leverage new scripting support in Spring Fu, but I can't make it work like I need. At some point you said that

*.kts

files will be compiled automatically. I have a

src/main/resources/application.kts

file that is defining

val foo = ...

and I would like to access

foo

from my

src/main/kotlin

source code. Is that use case supported? Does it require specific configuration?

ilya.chernikov

07/03/2018, 9:00 AM

Hi @sdeleuze First you probably need to put script into source roots, they are not compiled automatically from resources. And then to be able to access script properties and functions statically from other sources, you’ll need changes that will come with 1.2.60 (the planned EAP next week will most likely contain everything needed). With the 1.2.50 the only way is to use reflection, like:

val scriptClass = Class.forName("Application")
val ctor = scriptClass.getConstructor() // the params depend on your definition
...

sdeleuze

07/03/2018, 9:01 AM

Ok I will wait for

1.2.60

EAP next week then

Any chance you could provide an easy way to configure

*.kts

compilation from resources? The point of app configuration is to be separated from source code and I would like it to be optionaly externaliable.

So putting it in resources like we do for

application.properties

would be really nice

My goal is to get it compiled by default with the huge compiler dep

And optionnaly support dynalic evauationb at startup if te compiler dep is here

In such case the kts file will be outside of the JAR

ilya.chernikov

07/03/2018, 9:16 AM

This to my mind contradicts to the goal of having scripts to be statically resolvable on the compilation time. So, to my mind, either you want it to be part of the compilation - in this case you should put it to the place where it could be picked up by the compiler that compiles your other sources, or you want it dynamically compiled on the runtime and then you add the compiler to your dependencies and using provided infrastructure write a host the does what you want. Which case are you aiming at?

So, you can compile it from resources on runtime, we do not have ready-made helpers that will do it automatically, but it should be quite easy to write. If this is your case, I can try to bring some sample code, if you like.

sdeleuze

07/03/2018, 12:16 PM

Ok make sense. Yes I would like to update my dynamic configuratin module (currently based on the JSR API) to the new scripting support. See https://github.com/spring-projects/spring-fu/blob/master/modules/dynamic-configuration/. Any example of the new API would help.

Also any tips that could allow to limit the size of the dependencies and the startup time (like bytecode caching for n+1 runs) would help.

ilya.chernikov

07/03/2018, 12:54 PM

Ok, I’ll try to come up with some sample in the next few days. (I need to finish the changes to the 1.2.60 first though.)

sdeleuze

07/03/2018, 2:09 PM

Thanks

ilya.chernikov

07/09/2018, 4:15 PM

Hi @sdeleuze I tried to make a good example for the case of your configuration module, but unfortunately there is at least one limitation that make it impossible now - the regular scripts don’t have automatically calculated results. Only for REPL the last expression is returned from the evaluation as a result, and JSR223 API is based on the REPL. For the regular scripts the result of the

eval

call is the script class instance. Since you’re using the result returned from the script engine, I think it would be easier if you’ll continue to use JSR223 for now.

The problem itself is quite likely will be addressed in one of the following releases, and then you’ll be able to switch, if needed.

sdeleuze

07/10/2018, 3:09 PM

Ok thanks, please let me know when this will be fixed.

@ilya.chernikov Hey, any update on that topic? Should I keep using JSR 223 or is there anything new I should use?

ilya.chernikov

08/29/2018, 12:56 PM

Hi @sdeleuze, Unfortunately the issue with the return value is still unresolved. I plan to come back to it soon after release of 1.3. And about the same time I plan to assemble some compilation cache example. Then I’ll be hopefully ready to make an example for your case.

sdeleuze

08/29/2018, 12:56 PM

Thanks for the feedback

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