Map Kotlin/Native compilation to the supported-platform KPM variants

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinTargetConfigurator.kt

@@ -71,8 +71,8 @@ interface KotlinTargetConfigurator<KotlinTargetType : KotlinTarget> {
 }
 
 abstract class AbstractKotlinTargetConfigurator<KotlinTargetType : KotlinTarget>(
-    protected val createDefaultSourceSets: Boolean,
+    internal val createDefaultSourceSets: Boolean,
-    protected val createTestCompilation: Boolean
+    internal val createTestCompilation: Boolean
 ) : KotlinTargetConfigurator<KotlinTargetType> {
 
     protected open fun setupCompilationDependencyFiles(compilation: KotlinCompilation<KotlinCommonOptions>) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/GradleProjectModuleBuilder.kt

@@ -300,7 +300,10 @@ class GradleModuleVariantResolver : ModuleVariantResolver {
         // FIXME check composite builds, it's likely that resolvedVariantProvider fails on them?
         val resolvedGradleVariantName = resolvedVariantProvider.getResolvedVariantName(dependencyModuleId, compileClasspath)
         val kotlinVariantName = when (dependencyModule) {
-            is KotlinGradleModule -> dependencyModule.variants.single { resolvedGradleVariantName in it.gradleVariantNames }.name
+            is KotlinGradleModule -> {
+                dependencyModule.variants.singleOrNull { resolvedGradleVariantName in it.gradleVariantNames }?.name
+                    ?: return VariantResolution.Unknown(requestingVariant, dependencyModule)
+            }
             else -> resolvedGradleVariantName?.let(::kotlinVariantNameFromPublishedVariantName)
         }
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinTargetPresets.kt

@@ -6,16 +6,13 @@
 package org.jetbrains.kotlin.gradle.plugin.mpp
 
 import org.gradle.api.Project
-import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
+import org.jetbrains.kotlin.gradle.plugin.*
-import org.jetbrains.kotlin.gradle.plugin.KotlinOnlyTargetConfigurator
-import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
-import org.jetbrains.kotlin.gradle.plugin.KotlinTargetPreset
 
 abstract class KotlinOnlyTargetPreset<R : KotlinOnlyTarget<T>, T : KotlinCompilation<*>>(
     protected val project: Project
 ) : KotlinTargetPreset<R> {
 
-    protected abstract fun createKotlinTargetConfigurator(): KotlinOnlyTargetConfigurator<T, R>
+    protected abstract fun createKotlinTargetConfigurator(): AbstractKotlinTargetConfigurator<R>
 
     protected open fun provideTargetDisambiguationClassifier(target: KotlinOnlyTarget<T>): String? =
         target.targetName

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KotlinJvmVariant.kt

@@ -9,24 +9,14 @@ import groovy.lang.Closure
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.plugins.BasePluginConvention
 import org.gradle.api.Project
-import org.gradle.api.attributes.AttributeContainer
 import org.gradle.api.file.FileCollection
 import org.gradle.api.plugins.BasePluginExtension
-import org.gradle.api.tasks.TaskProvider
-import org.gradle.api.tasks.bundling.Jar
-import org.gradle.api.tasks.bundling.Zip
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptionsImpl
-import org.jetbrains.kotlin.gradle.dsl.kotlinExtension
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.*
-import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.unambiguousNameInProject
+import org.jetbrains.kotlin.gradle.plugin.mpp.filterModuleName
-import org.jetbrains.kotlin.gradle.plugin.sources.kpm.FragmentMappedKotlinSourceSet
 import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTarget
-import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTargetConfigurator
-import org.jetbrains.kotlin.gradle.tasks.locateTask
-import org.jetbrains.kotlin.project.model.refinesClosure
-import java.util.concurrent.Callable
 
 open class KotlinJvmVariant(
     containingModule: KotlinGradleModule,
@@ -77,34 +67,4 @@ class KotlinMappedJvmCompilationFactory(
             VariantMappedCompilationDetailsWithRuntime(variant, target),
         )
     }
-}
-
-class KotlinMappedJvmTargetConfigurator : KotlinJvmTargetConfigurator() {
-    override fun defineConfigurationsForTarget(target: KotlinJvmTarget) = Unit // done in KPM
-    override fun configureCompilationDefaults(target: KotlinJvmTarget) {
-        // everything else is done in KPM, but KPM doesn't have resources processing yet
-        target.compilations.all { compilation ->
-            configureResourceProcessing(
-                compilation,
-                target.project.files(Callable { compilation.allKotlinSourceSets.map { it.resources } })
-            )
-        }
-    }
-
-    override fun configureCompilations(target: KotlinJvmTarget) {
-        target.compilations.create(KotlinCompilation.MAIN_COMPILATION_NAME)
-        target.compilations.create(KotlinCompilation.TEST_COMPILATION_NAME)
-    }
-
-    override fun configureArchivesAndComponent(target: KotlinJvmTarget) = Unit // done in KPM
-
-    override fun createArchiveTasks(target: KotlinJvmTarget): TaskProvider<out Zip> =
-        checkNotNull(
-            target.project.locateTask<Jar>(
-                target.compilations.getByName(KotlinCompilation.MAIN_COMPILATION_NAME)
-                    .compilationDetails.let { it as VariantMappedCompilationDetails<*> }
-                    .variant.let { it as KotlinJvmVariant }
-                    .outputsJarTaskName
-            )
-        )
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KotlinNativeVariant.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
-import org.jetbrains.kotlin.gradle.plugin.mpp.DefaultCInteropSettings
+import org.jetbrains.kotlin.gradle.plugin.mpp.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.NativeCompileOptions
 import org.jetbrains.kotlin.gradle.plugin.mpp.publishedConfigurationName
 import org.jetbrains.kotlin.konan.target.KonanTarget
@@ -210,3 +210,18 @@ internal class KotlinNativeVariantCompilationData(
 
     override val kotlinOptions: KotlinCommonOptions = NativeCompileOptions { variant.languageSettings }
 }
+
+internal class KotlinMappedNativeCompilationFactory(
+    target: KotlinNativeTarget,
+    private val variantClass: Class<out KotlinNativeVariantInternal>
+) : KotlinNativeCompilationFactory(target) {
+    override fun create(name: String): KotlinNativeCompilation {
+        val module = target.project.kpmModules.maybeCreate(name)
+        val variant = module.fragments.create(target.name, variantClass)
+
+        return KotlinNativeCompilation(
+            target.konanTarget,
+            VariantMappedCompilationDetails(variant, target)
+        )
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/KpmAwareTargetConfigurator.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
+
+import org.jetbrains.kotlin.gradle.plugin.*
+import java.util.concurrent.Callable
+
+internal open class KpmAwareTargetConfigurator<T : KotlinTarget>(
+    private val legacyModelTargetConfigurator: AbstractKotlinTargetConfigurator<T>,
+) : AbstractKotlinTargetConfigurator<T>(true, legacyModelTargetConfigurator.createDefaultSourceSets),
+    KotlinTargetConfigurator<T> by legacyModelTargetConfigurator {
+    // NB: this override enforces calls to other overridden functions; without it, the delegate would call its own ones
+    override fun configureTarget(target: T) = super<AbstractKotlinTargetConfigurator>.configureTarget(target)
+
+    override fun defineConfigurationsForTarget(target: T) = Unit // done in KPM
+
+    override fun configureCompilationDefaults(target: T) {
+        // everything else is done in KPM, but KPM doesn't have resources processing yet
+        target.compilations.all { compilation ->
+            if (compilation is KotlinCompilationWithResources<*>) {
+                configureResourceProcessing(
+                    compilation,
+                    target.project.files(Callable { compilation.allKotlinSourceSets.map { it.resources } })
+                )
+            }
+        }
+    }
+
+    override fun configureCompilations(target: T) {
+        target.compilations.create(KotlinCompilation.MAIN_COMPILATION_NAME)
+        if (legacyModelTargetConfigurator.createTestCompilation) {
+            target.compilations.create(KotlinCompilation.TEST_COMPILATION_NAME)
+        }
+    }
+
+    override fun configureArchivesAndComponent(target: T) = Unit // done in KPM
+
+    override fun configureBuild(target: T) {
+        legacyModelTargetConfigurator.configureBuild(target)
+    }
+
+    override fun configureSourceSet(target: T) {
+        legacyModelTargetConfigurator.configureSourceSet(target)
+    }
+}
+
+internal class KpmAwareTargetWithTestsConfigurator<R : KotlinTargetTestRun<*>, T : KotlinTargetWithTests<*, R>, C>(
+    private val legacyModelTargetWithTestsConfigurator: C
+) :
+    KpmAwareTargetConfigurator<T>(legacyModelTargetWithTestsConfigurator),
+    KotlinTargetWithTestsConfigurator<R, T>
+
+        where C : AbstractKotlinTargetConfigurator<T>,
+              C : KotlinTargetWithTestsConfigurator<R, T> {
+
+    override fun configureTarget(target: T) {
+        super<KotlinTargetWithTestsConfigurator>.configureTarget(target)
+    }
+
+    override val testRunClass: Class<R>
+        get() = legacyModelTargetWithTestsConfigurator.testRunClass
+
+    override fun createTestRun(name: String, target: T): R =
+        legacyModelTargetWithTestsConfigurator.createTestRun(name, target)
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/abstractVariants.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.DefaultKotlinCompilationOutput
 import org.jetbrains.kotlin.gradle.plugin.mpp.MavenPublicationCoordinatesProvider
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.ComputedCapability
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.disambiguateName
+import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.newDependencyFilesHolder
 import org.jetbrains.kotlin.gradle.plugin.mpp.publishedConfigurationName
 import org.jetbrains.kotlin.gradle.utils.dashSeparatedName
 import org.jetbrains.kotlin.project.model.KotlinAttributeKey