Hi! Attempting to debug tests in kotlin/plugins/android-extensions/android-extensions-compiler. When trying to run them in the IDE they fail with

ClassNotFoundException

, and they also fail when running

gradlew plugins:android-extensions-compiler:test

from the command line. At best it seems like the dependencies are set up awkwardly elsewhere, in a different gradle script. What is the correct way to debug these tests?

Kotlin bootsrap version

1.4.0-dev-1818

(used in master) removed from bintray! Which version recommended before master update? @ilya.gorbunov Was

1.4.0-dev-5087

planned as next?

Hi, I would like to help with some samples for the standard library. Is there anything which should be considered first? I am planning on doing samples for kotlin/util/standard. These were the parts which were hard to find usage for, when I started Kotlin.

HI! I want to be able to declare

devDependencies

in the

org.jetbrains.kotlin.js

plugin. I tried to implement it in the Kotlin repository that I forked, and it worked as expected. So I want to send a Pull Request, but is there a problem?

I've cloned the repository and ran

gradlew install

. Now I can see all the artifacts in my local maven repository. When trying to do a gradle build referencing the snapshot artifacts in my local maven repo I get the following error: Built-in class kotlin.Enum is not found. My build.gradle.kts and settings.gradle.kts. Any advice?

Here are some of issues I'm stuck while debugging the task for :compiler-embeddable: Here's the link to the issue: https://discuss.gradle.org/t/build-kotlin-v1-3-30-with-support-of-gradle-4-4-1/36493

Is it possible to install the plugin produced by running

./gradlew ideaPlugin

into Android Studio? Once that finishes I zip

/dist/artifacts/ideaPlugin/Kotlin

and try to install that as a plugin from disk, but I always get the message “Plugin ‘Kotlin’ is incompatible with this installation”. Is there something I need to configure before building the plugin to note which IDE I want to build it for?

:kotlin-gradle-plugin:classes
\--- :kotlin-gradle-plugin:compileJava
     +--- :kotlin-gradle-plugin:compileKotlin
     |    \--- :kotlin-gradle-plugin:jar
     |         +--- :kotlin-gradle-plugin:classes (*)
     |         +--- :kotlin-gradle-plugin:compileKotlin (*)
     |         \--- :kotlin-gradle-plugin:inspectClassesForKotlinIC
     |              \--- :kotlin-gradle-plugin:classes (*)
     \--- :kotlin-gradle-plugin:jar (*)

While running kotlin v1.3.30 from the gradle 4.4.1 without using kotlin-DSL, The build fails with the above circular dependencies. Can someone explain me the circular dependency structure, I feel like a little lost here.

Hi where is the source code for 'kotlin-annotation-processing-gradle' reside I tried running

find . -name 'kotlin-annotation-processing-gradle'

but wasn't able to find it in the kotlin-source + plus googling doesn't help either 😕

While building kotlin-source code (1.3.30) after custom changes required, I'm getting this error:

:kotlin-compiler-embeddable:install (Thread[Task worker for ':' Thread 4,5,main]) started.
:kotlin-compiler-embeddable:install
Putting task artifact state for task ':kotlin-compiler-embeddable:install' into context took 0.0 secs.
Up-to-date check for task ':kotlin-compiler-embeddable:install' took 0.0 secs. It is not up-to-date because:
  Task has not declared any outputs.
Publishing configuration: configuration ':kotlin-compiler-embeddable:archives'
Publishing to org.gradle.api.publication.maven.internal.deployer.BaseMavenInstaller@85c2fcf
:kotlin-compiler-embeddable:install FAILED
:kotlin-compiler-embeddable:install (Thread[Task worker for ':' Thread 4,5,main]) completed. Took 0.002 secs.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':kotlin-compiler-embeddable:install'.
Could not publish configuration 'archives'
   > Could not write to file '/home/samyak/Kotlin/master/kotlin-1.3.30/prepare/compiler-embeddable/build/poms/pom-default.xml'.

* Try:
Run with --debug option to get more log output. Run with --scan to get full insights.

I'm not quite sure why it is not able to write to the file? Any help is appreciated.

Hi again 😅 I'm facing the following error while compiling kotlin-gradle-plugin. https://paste.debian.net/1156846/ Am i missing any dependency? Is that the reason for all unresolved references?

What are the rules around when to use

@SinceKotlin

and what version to target when using it? i.e. Should it be used any time a public method is added? and do the same rules apply to libraries like kotlin.test in addition to stdlib?

Hello everyone, in the contributing guidelines it says I should talk about what I plan to contribute. So basically I have an issue where I get a StackOverflowError whenever I load big enum files shown in the issue below. https://youtrack.jetbrains.com/issue/KT-40599 This is my first contribution if I complete it, any guidance/opinions is appreciated.

Where should I report a problem with experimental API? Specifically for

@ExperimentalUnsignedTypes

?

Hi there, I have a couple of extension functions for

Iterable<T>

that has been very useful to me personally, and I wish to make a contribution to the stdlib with those. 🙂 I read through this link and it suggests to let you know of my plans. So here's what the functions are basically:

list.validatedFold

- this is a function that iterates through the elements of an ordered list, and verifies that elements

n

and

n+1

pass some validation function. returns true if all elements pass, or false on the first element that does not pass (early return).

list.flatMapIndexedNotNull

- essentially what the name says, it was relevant for me in one case and I didn't find it in the stdlib. Do you think these are appropriate contributions?

Looks like 0e04af463d6e80a96040a88bffc6eeac2ab8a59d broke the IDEA plugin (class is not found at runtime). Is anyone working on fixing that?

Hello! Are there any tutorial on how can I debug kotlin compiler? I have an android project and kotlin compiler crashes for some reason. I'd like to run a debugger and find outh what causes it to crash.

Hi! Are there any docs about compiler architecture?

When adding samples to functions that actualise expectations, where should the

@sample

line be? • in the

expect

• in all

actual

implementations • both in the

expect

and the

actual

implementations

Hi! I was missing a collection function

sumOfOrNull

so I wrote my own very simple one:

inline fun <T> Iterable<T>.sumOfOrNull(selector: (T) -> Double?): Double? =
    this.mapNotNull(selector)
        .reduceOrNull { acc, i -> acc + i }

Does it make sense to add it to the standard library? Is this even suitable? I see the standard library uses mostly iterators,

for

or

while

, and not that much high level stuff (I guess due to performance?)

Hi. I'm not sure if this is a Kotlin bug, but it only happens in version 1.4. I'm using JUnit4 and I migrated Kotlin from 1.3.70 to 1.4.10

class Test {
    interface Example {
        operator fun <T> get(key: String, defaultValue: T): T
    }

    class ExampleImpl : Example {
        override fun <T> get(key: String, defaultValue: T): T = when (defaultValue) {
            is Int -> defaultValue
            else -> // Debug here is recognized as'Long' on `exampleError`
                throw UnsupportedOperationException("NOT_YET_IMPLEMENT") 
        }
    }
 
    // exception occurs only in 1.4
    @Test(expected = UnsupportedOperationException::class)
    fun exampleError() {
        val example: Example = ExampleImpl()
        org.junit.Assert.assertEquals(example["key", 1], 1)
    }

    // Success
    @Test
    fun exampleSuccess() {
        val example: Example = ExampleImpl()
        junit.framework.TestCase.assertEquals(example["key", 1], 1)
    }
}

I think this is the cause TestCase.assertEquals

public static void assertEquals(int expected, int actual)

Assert.assertEquals

public static void assertEquals(Object expected, Object actual) // There is no part defined as int type

Is there anyone who can help?

Hi! I think I’ve found a bug in

kotlin.reflect

and I want to contribute. I did some research and here’s what I found. Calling

metod.kotlinFunction

on a method that is a suspend function with inline class as a return type results in an error. It happens exactly in InlineClassAwareCaller.kt#L100. It is similar to KT-34024 , but it’s not exactly it. I went through the code and now I have a working minimal setup that reproduces the problem and some ideas how to fix it. I’d like to apply my ideas, starting with writing failing tests. I tried to find out how to write one, but I couldn’t find any instructions for that. I checked what git-blame says about the file and I found a commit which modifies the code and adds some tests. The commit adds, for example, compiler/testData/codegen/box/reflection/callBy/inlineClassDefaultArguments.kt, and, in the beginning of the file, there is:

// IGNORE_BACKEND: JS_IR, JS, NATIVE
// WITH_REFLECT

I found another one with:

// TARGET_BACKEND: JVM
// WITH_REFLECT
// WITH_COROUTINES

They seem to be instructions for a tool used in tests. Do you have any manual for it? Eg what options are available? Is it a good idea if I try to mimic what the linked commit does? I mean, is it sufficient to add *.kt file in the compile/testData/codegen directory and call

./gradlew coreLibTests

? Thank you :)

Evening, I stumbled accross issue KT-42619 (https://youtrack.jetbrains.com/issue/KT-42619) , the request for a nullable valueOf method for Enums. Now, I thought, let's contribute and try to create a pull request for this seemingly simple function. Checked out Kotlin, and started checking where I could add this function .... It seems that it is far less straightforward then I thought. Where should I start if I wish to add a function to Enums ?

How to prevent IDEA from changing

misc.xml

and other files that shouldn't be changed by a PR?

Is there any expected latency on code reviews if you've got a PR? I've been waiting for a few days but wasn't sure if it's normal or if it got lost somehow.

How to run API dump for the Standard Library?

I opened this PR up to fix an NPE in kapt in July but haven't gotten any sort of ack, is there anything else needed for someone to look at it? https://github.com/JetBrains/kotlin/pull/3610

Hey, I've for a PR that's been in limbo since christmas. Is there anyway someone can merge it after running tests? https://github.com/JetBrains/kotlin/pull/3947

I have implemented

Collection

instance for `Progression`s: https://github.com/JetBrains/kotlin/pull/4095 Connected issue: https://youtrack.jetbrains.com/issue/KT-34617