kotlinlang #kapt

Is anyone else using Dagger + databinding on Android with kapt? We are seeing an issue where our underlying exception never gets logged to the console because when Dagger or databinding encounters an issue while compiling it results in a large amount of exceptions. It almost looks like the output is cut off.

austynm

10/26/2017, 7:47 PM

gradle.projectsEvaluated {
    tasks.withType(JavaCompile) {
        options.compilerArgs << "-Xmaxerrs" << "500"
    }
}

kapt {
    javacOptions {
        option("-Xmaxerrs", 500)
    }
}

david.bilik

11/01/2017, 4:00 PM

Hi, I have recently experienced an issue that with problem build this error is thrown from kapt

error: annotation @OnLifecycleEvent is missing a default value for the element 'value'

I am not sure if its related to kapt, Android studio gradle plugin, Architecture Components library or something else whatsoever. Any ideas? Rebuilding project solves it but two consecutive builds always fails. Kotlin 1.1.51, AS 3.0

spierce7

11/04/2017, 5:34 PM

I'm trying to help another team at my company speed up their build. My team has avoided annotation processors with Kotlin like the plague, so I'm not familiar with kapt. I'm seeing kapt take about 9 seconds for incremental builds, which is what is making their incremental builds take so long. It's only processing Dagger, and Butterknife, so I'm surprised it's so slow. How do I know if I'm using kapt3? I've got

apply plugin: 'kotlin-kapt'

for the latest stable kotlin (1.1.51), and then we are using

kapt

in the dependencies section to compile the annotation processors.

markotron

11/06/2017, 10:25 AM

[Kapt related] Hi there, I generated a Kotlin file in folder specified by

processingEnv.options["kapt.kotlin.generated"]

. Although everything works, Intellij is not recognizing generated classes (shown as errors). I tried to add the generated folder as a source directory, but still nothing.. any ideas? [11:13]

sourceSets {
    main {
        java {
            srcDir "${buildDir.absolutePath}/generated/source/kaptKotlin/"
        }
    }
}

yan

11/23/2017, 12:05 PM

@apomelov What Kotlin IDE plugin version do you use? Are any exceptions being thrown while importing?

jkbbwr

11/26/2017, 1:23 PM

Anyone know how I use kapt with kotlin-gradle-dsl

markotron

11/27/2017, 12:53 PM

Hi there, I’ve been using kapt for a few weeks now and even though I managed to finish what I wanted, I still want to ask a kapt-gradle related question to fill in some gaps I have. Basically, when I’m working with an annotation processor and gradle (3.0), and I make some changes in the annotation processor’s code, the changes are sometimes applied and sometimes aren’t. When they aren’t, I search for all gradle processes (daemons) and kill them; rebuild the project and everything works again. Does anyone know why do I have to do this?

gildor

12/21/2017, 1:59 AM

I have build error because of Kapt on 1.2.20-eap-11: https://youtrack.jetbrains.com/issue/KT-21936 Only I have such problem?

carrot

12/23/2017, 5:13 PM

Hi all. I cannot for the life of me get an annotation processor to run, unless it’s in a subproject, which I would really like to avoid. Any tips/tricks/hints on getting one running when it’s in the main project?

uhe

01/19/2018, 8:59 AM

So has anyone played around with

kapt { useBuildCache = true }

? We're relying heavily on annotation processing and I think this could help speed up our build times significantly. However, I'm a bit afraid we'll end up with broken apps half the time...

➕ 4

gildor

01/25/2018, 4:56 AM

Looks that I’ve found critical bug in Kapt 1.2.20. It doesn’t work with classes with

sign. @yan Could you please take a look? Not sure that my analysis is correct, but I will try to prepare sample project. We really want migrate to 1.2.20 but it’s blocker for us. https://youtrack.jetbrains.com/issue/KT-22493

01/25/2018, 8:54 PM

e: /Users/jakew/dev/JakeWharton/SdkSearch/api/circleci/src/main/java/com/jakewharton/sdksearch/api/circleci/CircleCiModule.java:13: error: incompatible types: Module cannot be converted to Annotation
@Module //
 ^
e: /Users/jakew/dev/JakeWharton/SdkSearch/api/circleci/src/main/java/com/jakewharton/sdksearch/api/circleci/CircleCiModule.java:15: error: cannot find symbol
  @Provides static CircleCiService documentationService(String token) {
   ^
  symbol:   class Provides
  location: class CircleCiModule

gildor

01/27/2018, 11:25 AM

Just use Gradle root config and apply to all projects

gildor

01/31/2018, 3:35 AM

@yan Looks like people have a lot of confusion with generateStubs (you can check #dagger). Should generateStubs be deprecated and removed in one of next releases? Maybe not deleted, but throw exception with if somebody set it to true and provide some link with migration guide

☝️ 1

spierce7

02/04/2018, 11:14 PM

how does the kapt build cache work? Does it figure out which code effects the annotation processor, and re-run when it changes, or does it just only ever run once (which seems like it would be really bad)?

kapt.useBuildCache = true

dkhusainov

02/06/2018, 10:09 PM

Hello. Did anyone encounter the following bugs while writing custom your own kapt modules? 1. kapt can't find a class marked with annotation if it's package called import(foo.bar.anotherpackage.import.MyClass) 2. Can't debug it, can't even print debug messages to gradle console. 3. If your

kapt

module is part of your project(not a separate dependency somewhere in maven) and is referenced as

kapt project(":processor")

, you can't rebuild your project, because you get this message

Unable to delete file processor\build\libs\lua-deserealizator.jar

. I have to manually kill gradle deamons to release this file, so it could delete it...

raulraja

02/11/2018, 4:29 PM

Can kapt based annotation processors intercept expressions inside functions with

kotlin.annotation.AnnotationTarget.EXPRESSION

like in the example below?

fun main(args: Array<String>) {
  println(@myannotation doStuff())
}

Zac Sweers

02/20/2018, 3:49 PM

I've noticed that when writing an annotation processor in a kotlin project and then consuming it in a sibling project, the processor is not visible when kapt runs. I've been able to repro this behavior on a couple of projects, both android and java

agrosner

02/24/2018, 4:08 PM

If not, is there a location where I can delete it manually?

christopher

03/06/2018, 5:05 AM

I’m playing with my first kapt processor to generate interfaces, and it works when compiled with gradle, but IDEA seems unaware of the processor. I wrote a post over on kotlinlang: https://discuss.kotlinlang.org/t/kapt-idea-doesnt-know-about-generated-classes/6894 if anyone has a moment to take a look at my code.

03/06/2018, 3:52 PM

you could read the metadata

zhouij

03/13/2018, 4:10 PM

Anyone had experience using kapt with custom kotlin annotation processors and Maven? My annotation processors are not triggering, I spent 3 days trying all different things but still can’t figure out why

raulraja

04/01/2018, 11:32 PM

Does kap work on non JVM projects or is intended only for JVM projects since apt is part of a JSR? I can't find any docs related to native or JS.

adrik77

04/05/2018, 1:21 PM

Hi @channel I’m facing an error using guice

@Assisted

annotation. I have a function similar to this

fun createPublishHysCmd(@Assisted("message") message: TBase)

When I see the compiled version, it decompiles to:

public abstract fun createPublishHysCmd(@com.google.inject.assistedinject.Assisted message: org.apache.thrift.TBase

Without the value of the annotation. If I write a similar function in java:

PublishMessageHysCmd createPublishHysCmd(@Assisted("message") TBase message)

I can see it decompiled to:

PublishMessageHysCmd createPublishHysCmd(@Assisted("message") TBase var1)

Could

kapt

fix this for me? I couldn’t find an annotationProcessor for google guice.

okaymak

04/20/2018, 6:52 AM

After updating to kotlin

1.2.40

building a project fails with this error:

> Task :shared:kaptGenerateStubsDebugKotlin
e: [kapt] An exception occurred: java.lang.NoClassDefFoundError: org/jetbrains/kotlin/serialization/jvm/JvmProtoBufUtil
	at me.eugeniomarletti.kotlin.metadata.KotlinClassMetadata$data$2.invoke(KotlinMetadata.kt:51)
	at me.eugeniomarletti.kotlin.metadata.KotlinClassMetadata$data$2.invoke(KotlinMetadata.kt:50)
	at kotlin.SynchronizedLazyImpl.getValue(Lazy.kt:131)
	at me.eugeniomarletti.kotlin.metadata.KotlinClassMetadata.getData(KotlinMetadata.kt)
	at android.arch.persistence.room.ext.KotlinMetadataProcessor$DefaultImpls.getParameterNames(KotlinMetadataProcessor.kt:33)
	at android.arch.persistence.room.processor.PojoProcessor.getParameterNames(PojoProcessor.kt:73)
	at android.arch.persistence.room.processor.PojoProcessor.getParamNames(PojoProcessor.kt:245)
	...
        Caused by: java.lang.ClassNotFoundException: org.jetbrains.kotlin.serialization.jvm.JvmProtoBufUtil
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 77 more

> Task :shared:kaptDebugKotlin FAILED

When I go back to

1.2.31

, it builds without errors. Do I need to add an extra dependency for

1.2.40

poohbar

04/25/2018, 7:54 PM

when setting up

sourceDirs

in the

kapt

goal of

kotlin-maven-plugin

can I use wildcards? it does not seem to work 😞

FranGSierra

05/03/2018, 3:19 PM

Fast question here: If I want to start writing my own annotation-processing with Kapt, should I use Kapt2 or Kapt3?

poohbar

05/03/2018, 6:12 PM

Also "Kapt2" was just some sort transition version from kapt1 to kapt2

mmkkaaay 😄 😄

nitrog42

05/18/2018, 8:46 AM

Hello ! I have question, probably for @yan but maybe someone else will have the answer : Does the new gradle 4.7 incremental annotations processing (https://docs.gradle.org/4.7/release-notes.html#incremental-annotation-processing) works with KAPT in a transparent way or will it needs more development from your team ?

Title

nitrog42

05/18/2018, 8:46 AM

yan

05/18/2018, 1:21 PM

No, incremental annotation processor support doesn’t affect kapt in its current state. But we do have plans to support it.

👍 1

nitrog42

05/18/2018, 1:32 PM

Ok so kapt will need to be updated in order to use the new incap feature of gradle, thank you !

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