Compiler plugin: fix IrLinkageError with K/Js on Kotlin 1.9 (#3557)

* Compiler plugin: fix IrLinkageError with K/Js on Kotlin 1.9

Fixes #3556 – IrLinkageError if objects or abstract subclasses of
AbstractProjectConfig exist in K/Js sources

This commit makes the Kotest compiler plugin skip non-instantiable
classes and objects, which derive from AbstractProjectConfig.

Note: To use objects deriving from AbstractProjectConfig on K/Js, they
must be referenced at least once in code that executes, otherwise they
will be discarded (with the IDE warning "object ... is never used)".

* API validation: Exclude compiler and Gradle plugins

---------

Co-authored-by: Sam <sam@sksamuel.com>

build.gradle.kts

@@ -9,3 +9,13 @@ repositories {
    google()
    gradlePluginPortal() // tvOS builds need to be able to fetch a kotlin gradle plugin
 }
+
+apiValidation {
+   ignoredPackages.addAll(
+      listOf(
+         "io.kotest.framework.multiplatform.embeddablecompiler",
+         "io.kotest.framework.multiplatform.gradle",
+         "io.kotest.framework.multiplatform.native"
+      )
+   )
+}

kotest-framework/kotest-framework-multiplatform-plugin-embeddable-compiler/src/jvmMain/kotlin/io/kotest/framework/multiplatform/embeddablecompiler/Transformer.kt

@@ -31,7 +31,7 @@ abstract class Transformer(
 
    override fun visitClassNew(declaration: IrClass): IrStatement {
       super.visitClassNew(declaration)
-      if (declaration.isProjectConfig()) configs.add(declaration)
+      if (declaration.isInstantiableProjectConfig()) configs.add(declaration)
       return declaration
    }
 

kotest-framework/kotest-framework-multiplatform-plugin-embeddable-compiler/src/jvmMain/kotlin/io/kotest/framework/multiplatform/embeddablecompiler/specs.kt

@@ -1,5 +1,7 @@
 package io.kotest.framework.multiplatform.embeddablecompiler
 
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.isClass
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.types.IrType
@@ -27,9 +29,11 @@ val abstractProjectConfigFqName = FqName("io.kotest.core.config.AbstractProjectC
 fun IrFile.specs() = declarations.filterIsInstance<IrClass>().filter { it.isSpecClass() }
 
 /**
- * Returns true if this IrClass is a project config
+ * Returns true if this IrClass is an instantiable project config
  */
-fun IrClass.isProjectConfig() = superTypes().any { it.classFqName == abstractProjectConfigFqName }
+fun IrClass.isInstantiableProjectConfig() =
+   kind.isClass && modality != Modality.ABSTRACT && modality != Modality.SEALED &&
+      superTypes().any { it.classFqName == abstractProjectConfigFqName }
 
 /**
  * Recursively returns all supertypes for an [IrClass] to the top of the type tree.

kotest-framework/kotest-framework-multiplatform-plugin-gradle/api/kotest-framework-multiplatform-plugin-gradle.api

@@ -1,29 +0,0 @@
-public abstract class io/kotest/framework/multiplatform/gradle/KotestMultiplatformCompilerGradlePlugin : org/jetbrains/kotlin/gradle/plugin/KotlinCompilerPluginSupportPlugin {
-	public static final field Companion Lio/kotest/framework/multiplatform/gradle/KotestMultiplatformCompilerGradlePlugin$Companion;
-	public static final field KotestEmbeddableCompilerArtifactId Ljava/lang/String;
-	public static final field KotestGroupId Ljava/lang/String;
-	public static final field KotestNativeArtifactId Ljava/lang/String;
-	public static final field compilerPluginId Ljava/lang/String;
-	public static final field kotestPluginExtensionName Ljava/lang/String;
-	public fun <init> (Lorg/gradle/api/provider/ProviderFactory;)V
-	public synthetic fun apply (Ljava/lang/Object;)V
-	public fun apply (Lorg/gradle/api/Project;)V
-	public fun applyToCompilation (Lorg/jetbrains/kotlin/gradle/plugin/KotlinCompilation;)Lorg/gradle/api/provider/Provider;
-	public fun getCompilerPluginId ()Ljava/lang/String;
-	public fun getPluginArtifact ()Lorg/jetbrains/kotlin/gradle/plugin/SubpluginArtifact;
-	public fun getPluginArtifactForNative ()Lorg/jetbrains/kotlin/gradle/plugin/SubpluginArtifact;
-	public fun isApplicable (Lorg/jetbrains/kotlin/gradle/plugin/KotlinCompilation;)Z
-}
-
-public final class io/kotest/framework/multiplatform/gradle/KotestMultiplatformCompilerGradlePlugin$Companion {
-}
-
-public final class io/kotest/framework/multiplatform/gradle/KotestPluginConstantsKt {
-	public static final field KOTEST_COMPILER_PLUGIN_VERSION Ljava/lang/String;
-}
-
-public abstract class io/kotest/framework/multiplatform/gradle/KotestPluginExtension {
-	public fun <init> ()V
-	public abstract fun getKotestCompilerPluginVersion ()Lorg/gradle/api/provider/Property;
-}
-

kotest-framework/kotest-framework-multiplatform-plugin-legacy-native/api/kotest-framework-multiplatform-plugin-legacy-native.api

@@ -1,28 +0,0 @@
-public final class io/kotest/framework/multiplatform/native/EntryPoint {
-	public static final field INSTANCE Lio/kotest/framework/multiplatform/native/EntryPoint;
-	public static final field LaunchMethodName Ljava/lang/String;
-	public static final field LauncherValName Ljava/lang/String;
-	public static final field TestEngineClassName Ljava/lang/String;
-	public static final field WithSpecsMethodName Ljava/lang/String;
-	public static final field WithTeamCityListenerMethodName Ljava/lang/String;
-}
-
-public final class io/kotest/framework/multiplatform/native/KotestNativeComponentRegistrar : org/jetbrains/kotlin/compiler/plugin/CompilerPluginRegistrar {
-	public fun <init> ()V
-	public fun getSupportsK2 ()Z
-	public fun registerExtensions (Lorg/jetbrains/kotlin/compiler/plugin/CompilerPluginRegistrar$ExtensionStorage;Lorg/jetbrains/kotlin/config/CompilerConfiguration;)V
-}
-
-public final class io/kotest/framework/multiplatform/native/SpecIrGenerationExtension : org/jetbrains/kotlin/backend/common/extensions/IrGenerationExtension {
-	public fun <init> (Lorg/jetbrains/kotlin/cli/common/messages/MessageCollector;)V
-	public fun generate (Lorg/jetbrains/kotlin/ir/declarations/IrModuleFragment;Lorg/jetbrains/kotlin/backend/common/extensions/IrPluginContext;)V
-	public fun resolveSymbol (Lorg/jetbrains/kotlin/ir/symbols/IrSymbol;Lorg/jetbrains/kotlin/ir/builders/TranslationPluginContext;)Lorg/jetbrains/kotlin/ir/declarations/IrDeclaration;
-}
-
-public final class io/kotest/framework/multiplatform/native/SpecsKt {
-	public static final fun getSpecClasses ()Ljava/util/List;
-	public static final fun isSpecClass (Lorg/jetbrains/kotlin/ir/declarations/IrClass;)Z
-	public static final fun specs (Lorg/jetbrains/kotlin/ir/declarations/IrFile;)Ljava/util/List;
-	public static final fun superTypes (Lorg/jetbrains/kotlin/ir/declarations/IrClass;)Ljava/util/List;
-}
-