kotlinlang #scripting

Hey there! I'm trying this super simple and somewhat janky setup to test scripting and I'm getting the following error after all script evaluations, even if the script only contains something like

println("foo")

. Here's the error:

wrong number of arguments
ERROR
sp: null
e: java.lang.IllegalArgumentException: wrong number of arguments
null ; null
---
null

btw,
scriptResource
is just getting a resource from the calss loader, like this:
val scriptResource = ModuleScript::class.java.classLoader.getResource("scripts/test.kts")
Any idea what the issue might be?

Tmpod

01/25/2020, 10:03 PM

Hey again, back with another question :p Has anyone got IntelliJ to recognise implicit receivers in scripts? I'm relying on those for a nice interface but I can't get the IDE to properly process it.

Rick Fast

01/26/2020, 11:16 PM

hello. question about custom .kts scripting w/

@KotlinScript

Jakub Gwóźdź

01/27/2020, 1:53 PM

Hi. Is there any known workaround for https://youtrack.jetbrains.com/issue/KT-28475 ? I'd like to use some DB calls in my scripts, but when using JVM11, I end up with

% cat script/Environment.ws.kts

println("sql:" + javax.sql.DataSource::class.java)

% kotlinc -Xadd-modules=java.sql -script script/Environment.ws.kts

java.lang.NoClassDefFoundError: javax/sql/DataSource
        at Environment_ws.<init>(Environment.ws.kts:1)

gianluz

02/09/2020, 8:51 PM

good afternoon!! i have a

.main.kts

script, where i would like to use a local jar directly from my maven local without using

-cp

option at compile time.. something using

@file:Repository("path/to/mavenlocal")

and then

@file:DependsOn("groupId:artifactId:version")

i’m using the version 1.3.61 😕 any idea??

edwinRNDR

02/12/2020, 3:04 PM

Are there any strategies for speeding up the loading of scripts when embedding the script host using

BasicJvmScriptingHost

and

dependenciesFromCurrentContext(wholeClasspath = true)

and one repeatedly loads the same script with small changes?

SrSouza

02/15/2020, 3:56 PM

Hi, I'm not active here but I want to ask something that I not test, kscript on IDEA using @file:MavenRepository + @file:DependsOnMaven, the IDEA can resolve that? If yes, three is any configuration to script definition that you can provide implicit repositories and dependencies just for the IDEA can give the dependencies resolution on the script?

Egor

02/17/2020, 1:32 PM

Hi. I have a problem with running kotlin script from Intellij with custom template. I added discovery file to the project, as a result IDE see the script with custom extension and I am able to navigate to methods defined in my custom script template. But when I try to run the script with run configuration I see the Error: “error: error processing script definition class com.some.scripting.CustomScriptTemplate: Unable to construct script definition: Expecting KotlinScript annotation on the class com.some.scripting.CustomScriptTemplate” My CustomScriptTemplate has this annotation. I’ll appreciate any help. @ilya.chernikov do you have any idea?

Leon K

02/19/2020, 10:35 AM

Is there any "official" documentation on Embedded (as in, JVM-Embedded, not microcomputer-embedded) kotlin-scripting with or without JSR223? is there any documentation on JSR223? The only way I was able to use this feature is by following some old blog-posts and issue-threads, I've never stumbled upon actual documentation. And I'm having a lot of problems with my scripting (it seems to not clean up any memory, -> memory-leak that i don't know how to prevent)) and I have no idea where to find out what I'm doing wrong. many of these problems here seem to come from a point of "I read a few blog-posts, now it isn't working the same way as i'm using a different language or context, what do i do"....

SrSouza

03/03/2020, 9:37 PM

What is the current state of @ScriptBody and support for scripts with Coroutines (suspend keyword) ?

Leon Linhart

03/04/2020, 1:34 PM

Hey, I've been having some issues getting IntelliJ to recognize my script definitions. The IDE log suggests that the issue is caused by some access problems:

java.lang.IllegalAccessException: class kotlin.reflect.jvm.internal.KClassImpl$Data$objectInstance$2 cannot access a member of class com.github.themrmilchmann.kwiki.dsl.SiteScriptCompilationConfiguration with modifiers "public static final"

(I will include the full stacktrace as a thread comment.) However, my compilation configuration is a public object as shown in examples in this channel before. (

object SiteScriptCompilationConfiguration : ScriptCompilationConfiguration({ ... })

) Now my actual question is what I can do to debug this further? (Could this be an issue caused by using Java 11 as IDE runtime?)

fcosta

03/04/2020, 9:28 PM

$ ./jvm/main-kts/scripts/kotlin-shell.main.kts 
:: problems summary ::
:::: WARNINGS
		module not found: eu.jrie.jetbrains#kotlin-shell-core;0.2.1

	==== central: tried

	  <https://repo1.maven.org/maven2/eu/jrie/jetbrains/kotlin-shell-core/0.2.1/kotlin-shell-core-0.2.1.pom>

	  -- artifact eu.jrie.jetbrains#kotlin-shell-core;0.2.1!kotlin-shell-core.jar:

	  <https://repo1.maven.org/maven2/eu/jrie/jetbrains/kotlin-shell-core/0.2.1/kotlin-shell-core-0.2.1.jar>

error: cannot access script base class 'org.jetbrains.kotlin.mainKts.MainKtsScript'. Check your module classpath for missing or conflicting dependencies (kotlin-shell.main.kts:3:1)
error: unresolved reference: Repository (kotlin-shell.main.kts:3:7)
error: unresolved reference: DependsOn (kotlin-shell.main.kts:4:7)
error: unresolved reference: DependsOn (kotlin-shell.main.kts:5:7)
error: unresolved reference: CompilerOptions (kotlin-shell.main.kts:6:7)
error: unresolved reference: kotlinx (kotlin-shell.main.kts:7:13)
error: an annotation argument must be a compile-time constant (kotlin-shell.main.kts:7:13)
error: unresolved reference: eu (kotlin-shell.main.kts:9:8)
error: unresolved reference: shell (kotlin-shell.main.kts:11:1)
error: unresolved reference: args (kotlin-shell.main.kts:12:9)
error: expression '"ls -l"' of type 'String' cannot be invoked as a function. The function 'invoke()' is not found (kotlin-shell.main.kts:13:9)
error: unresolved reference: pipeline (kotlin-shell.main.kts:21:9)
error: unresolved reference: args (kotlin-shell.main.kts:22:20)
error: unresolved reference: process (kotlin-shell.main.kts:22:30)
error: unresolved reference: streamLambda (kotlin-shell.main.kts:23:21)
error: cannot infer a type for this parameter. Please specify it explicitly. (kotlin-shell.main.kts:23:36)
error: cannot infer a type for this parameter. Please specify it explicitly. (kotlin-shell.main.kts:23:42)
error: cannot infer a type for this parameter. Please specify it explicitly. (kotlin-shell.main.kts:23:45)
error: expression '"wc ${args[0]}"' of type 'String' cannot be invoked as a function. The function 'invoke()' is not found (kotlin-shell.main.kts:44:9)
error: unresolved reference: args (kotlin-shell.main.kts:44:15)
jvm/main-kts/scripts/kotlin-shell.main.kts: error: unresolved dependency: eu.jrie.jetbrains#kotlin-shell-core;0.2.1: not found
jvm/main-kts/scripts/kotlin-shell.main.kts:3:1: error: cannot access script base class 'org.jetbrains.kotlin.mainKts.MainKtsScript'. Check your module classpath for missing or conflicting dependencies
@file:Repository("<https://dl.bintray.com/jakubriegel/kotlin-shell>")
^
jvm/main-kts/scripts/kotlin-shell.main.kts:3:7: error: unresolved reference: Repository
@file:Repository("<https://dl.bintray.com/jakubriegel/kotlin-shell>")
      ^
jvm/main-kts/scripts/kotlin-shell.main.kts:4:7: error: unresolved reference: DependsOn
@file:DependsOn("eu.jrie.jetbrains:kotlin-shell-core:0.2.1")
      ^
jvm/main-kts/scripts/kotlin-shell.main.kts:5:7: error: unresolved reference: DependsOn
@file:DependsOn("org.slf4j:slf4j-simple:1.7.28")
      ^
jvm/main-kts/scripts/kotlin-shell.main.kts:6:7: error: unresolved reference: CompilerOptions
@file:CompilerOptions("-Xopt-in=kotlin.RequiresOptIn")
      ^
jvm/main-kts/scripts/kotlin-shell.main.kts:7:13: error: unresolved reference: kotlinx
@file:OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
            ^
jvm/main-kts/scripts/kotlin-shell.main.kts:7:13: error: an annotation argument must be a compile-time constant
@file:OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
            ^
jvm/main-kts/scripts/kotlin-shell.main.kts:9:8: error: unresolved reference: eu
import eu.jrie.jetbrains.kotlinshell.shell.*
       ^
jvm/main-kts/scripts/kotlin-shell.main.kts:11:1: error: unresolved reference: shell
shell {
^
jvm/main-kts/scripts/kotlin-shell.main.kts:12:9: error: unresolved reference: args
    if (args.isEmpty()) {
        ^
jvm/main-kts/scripts/kotlin-shell.main.kts:13:9: error: expression '"ls -l"' of type 'String' cannot be invoked as a function. The function 'invoke()' is not found
        "ls -l"()
        ^
jvm/main-kts/scripts/kotlin-shell.main.kts:21:9: error: unresolved reference: pipeline
        pipeline {
        ^
jvm/main-kts/scripts/kotlin-shell.main.kts:22:20: error: unresolved reference: args
            "cat ${args[0]}".process() pipe
                   ^
jvm/main-kts/scripts/kotlin-shell.main.kts:22:30: error: unresolved reference: process
            "cat ${args[0]}".process() pipe
                             ^
jvm/main-kts/scripts/kotlin-shell.main.kts:23:21: error: unresolved reference: streamLambda
                    streamLambda { strm, _, _ ->
                    ^
jvm/main-kts/scripts/kotlin-shell.main.kts:23:36: error: cannot infer a type for this parameter. Please specify it explicitly.
                    streamLambda { strm, _, _ ->
                                   ^
jvm/main-kts/scripts/kotlin-shell.main.kts:23:42: error: cannot infer a type for this parameter. Please specify it explicitly.
                    streamLambda { strm, _, _ ->
                                         ^
jvm/main-kts/scripts/kotlin-shell.main.kts:23:45: error: cannot infer a type for this parameter. Please specify it explicitly.
                    streamLambda { strm, _, _ ->
                                            ^
jvm/main-kts/scripts/kotlin-shell.main.kts:44:9: error: expression '"wc ${args[0]}"' of type 'String' cannot be invoked as a function. The function 'invoke()' is not found
        "wc ${args[0]}"()
        ^
jvm/main-kts/scripts/kotlin-shell.main.kts:44:15: error: unresolved reference: args
        "wc ${args[0]}"()
              ^

Paul Woitaschek

03/06/2020, 8:31 AM

My kotlin scripts are all really flaky because they require a specific file in the same folder as the script. So when I don't execute them from the directory where they are located, they fail. Is there some way I can get the location of the script from inside the script?

Tmpod

03/10/2020, 4:15 PM

@ilya.chernikov Hey! I'm trying out my scripting stuff in 1.3.70 now and I still can't get IntelliJ to recognise the implicit receivers. I have the META-INF in the right place (afaik) and I've set

ide { acceptedLocations(ScriptAcceptedLocation.Everywhere) }

in the compilation settings

Luis Munoz

03/16/2020, 3:40 PM

I have many kotlin scripts that suspend querying external services. The problem I am having is that I am having to create many script engines because as far as I understand running engine.eval isn't thread safe. Is this correct? Is there anyway to run scripts that suspend and not eat up an entier thread? or si the recommended usage is to make sure eval is never running on different threads?

Untitled

Paul Woitaschek

03/20/2020, 8:36 AM

How can I pass an argument to kts file? When I run

kotlin my-script.main.kts --hello

the compiler doesn't pass it through:

error: invalid argument: --hello

Paul Woitaschek

03/20/2020, 9:49 AM

How can I add the serialization plugin to a kts script?

➕ 2

❓ 2

Czar

03/26/2020, 1:24 PM

I'm trying to redirect script output to a

Flow<String>

Attached is a scratch file I'm playing in, it prints

test

whereas I expect it to print

Z: test

if output redirection worked. Any idea what am I doing wrong? Or is Kotlin ScriptEngine just ignoring context that is passed in to eval?

output-redirection_kts.kt

Paul Woitaschek

03/27/2020, 2:01 PM

I found something interesting. Can someone confirm that the first execution of this script prints

false

and the second execution throws a

KotlinReflectionNotSupportedError

test_main_kts.kt

Nikky

03/27/2020, 7:05 PM

i am getting this error again:

Cannot inline bytecode built with JVM target 1.8 into bytecode that is being built with JVM target 1.6. Please specify proper '-jvm-target' option

i have thise code in place... and it used to work

compilerOptions.append("-jvm-target 1.8")

has anything changed there ?

Paul Woitaschek

03/28/2020, 8:26 AM

How can I use free compiler args? This doesnt remove the warning: `

@file:CompilerOptions("-Xuse-experimental=kotlin.ExperimentalStdlibApi")

Nikky

03/29/2020, 2:35 AM

and what does

ide.dependencySources

do ? can i make the ide know about which files are used as dependencies (instead of all files in sources) ? that wuld be useful, because i have multiple scripts that have different files they use as dependencies each.. but the ide does not look at the

importScripts

that are used

Lorin

04/01/2020, 1:43 AM

I might find a bug in kotlin-scripting (v1.3.61 and v1.3.70). The code is as follows:

@KotlinScript(fileExtension = "simplescript.kts")
abstract class SimpleScript

fun main() {
    val config = createJvmCompilationConfigurationFromTemplate<SimpleScript> {
        jvm {
            dependenciesFromCurrentContext(wholeClasspath = true)
        }
    }

    val s = """
        println("This is a test!")
    """.trimIndent()

    val res = BasicJvmScriptingHost().eval(s.toScriptSource(), config, null)
    println(res)
}

Running this program, the output is as follows:

This is a test!
Success(value=EvaluationResult(returnValue=Unit, configuration=kotlin.script.experimental.api.ScriptEvaluationConfiguration@a9a8cb94), reports=[])

Though the evalution of this script is successful,

EvaluationResult.returnValue

Unit

, which is not expected. I try to run this program with kotlin-scripting (v1.3.31), the output is:

This is a test!
Success(value=EvaluationResult(returnValue=:  = Script_simplescript@3ddf2a72, configuration=kotlin.script.experimental.api.ScriptEvaluationConfiguration@a4b45b1a), reports=[])

It is clear that the script object (Script_simplescript@3ddf2a72) is stored in

EvaluationResult.returnValue

, which is the desirable behavior for me. Could anyone from JB confirm it? Thanks!

gammanik

04/02/2020, 1:35 PM

Hello! Are there any repos or examples of how to use Kotlin script engine in Intellij plugin dev? I’m trying to start with a simple code:

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

I’ve added dependencies and

/services/javax.script.ScriptEngineFactory

file. But the engine is actually null.

mbonnin

04/03/2020, 5:03 PM

*.main.kts

support dependencies resolution ? The following doesn't work:

#!/usr/bin/env kotlin

@file:DependsOn("com.squareup.moshi:moshi:1.9.2")
@file:DependsOn("com.squareup.okio:okio:2.4.3")

import okio.source // error: unresolved reference: source
import <http://java.io|java.io>.File

File("foo").source()

if I swap the imports of okio and moshi, it works well though, leading me to think that the script will import the first version it encounters ?

jimn

04/04/2020, 4:36 AM

did i paste the example wrong?

Gary Tierney

04/05/2020, 6:14 PM

@ilya.chernikov is there anything different about how completion contributors or import suggestions are done in the IDE for kotlin scripts? I have a script definition whose scripts are unable to get code assistance on imports or symbol names (and has been that way since around 1.3.40). I'm looking into debugging the Kotlin plugin now, but it's a little difficult without an easy way to configure debug sources.

SrSouza

04/10/2020, 10:59 PM

Hi @ilya.chernikov, I saw the LightEditor from IntelliJ 2020.1, is really cool for editing simples files, or single files that a project is not needed. You think that in the feature LightEditor will be able to be used to edit Kotlin scripts without a project?

👍 1

mbonnin

04/12/2020, 2:34 PM

Can I add mavenLocal to a script using

@file:Repository

? I tried

@file:Repository("file:///Users/m.bonnin/.m2/repository")

but that doesn't seem to work

steenooo

04/13/2020, 5:57 PM

Is it possible to only compile the script to JVM Bytecode with the scripting api? So I can apply some changes to it on runtime

➕ 2

Title

steenooo

04/13/2020, 5:57 PM

Is it possible to only compile the script to JVM Bytecode with the scripting api? So I can apply some changes to it on runtime

➕ 2

ilya.chernikov

04/14/2020, 5:03 PM

There are no well-defined hooks for doing this, but you can use a pseudo-evaluator, simplar to the

BasicJvmScriptClassFilesGenerator

to get an access to the bytecode.

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