Restore "AbstractKotlinCompileTool class now also implements PatternFilterable"

This reverts commit d5e5513dfd.

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KaptIncrementalWithIsolatingApt.kt

@@ -306,6 +306,7 @@ class KaptIncrementalWithIsolatingApt : KaptIncrementalIT() {
             build(":mylibrary:assembleDebug") {
                 assertEquals(
                     listOf(
+                        "baseLibrary/build/tmp/kapt3/stubs/debug/error/NonExistentClass.java",
                         "mylibrary/src/main/java/com/example/lib/ExampleParcel.java",
                         "baseLibrary/src/main/java/com/example/lib2/basemodule/BaseClassParcel.java",
                     ).map { projectPath.resolve(it).toRealPath().toString() }.toSet(),

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/Kapt3KotlinGradleSubplugin.kt

@@ -33,6 +33,7 @@ import org.jetbrains.kotlin.gradle.model.builder.KaptModelBuilder
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.AbstractKotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJvmAndroidCompilation
+import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompileTool
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlin.gradle.tasks.locateTask
 import org.jetbrains.kotlin.gradle.tasks.registerTask
@@ -576,8 +577,7 @@ class Kapt3GradleSubplugin @Inject internal constructor(private val registry: To
         kotlinCompilation.output.classesDirs.from(kaptTaskProvider.map { it.classesDir })
 
         kotlinCompilation.compileKotlinTaskProvider.configure {
-            it as SourceTask
-            it.source(sourcesOutputDir, kotlinSourcesOutputDir)
+            (it as AbstractKotlinCompileTool<*>).setSource(sourcesOutputDir, kotlinSourcesOutputDir)
         }
 
         if (javaCompile != null) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptGenerateStubsTask.kt

@@ -16,9 +16,8 @@
 
 package org.jetbrains.kotlin.gradle.internal
 
-import org.gradle.api.file.ConfigurableFileCollection
-import org.gradle.api.file.Directory
-import org.gradle.api.file.DirectoryProperty
+import org.gradle.api.file.*
+import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.*
@@ -29,8 +28,6 @@ import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptionsImpl
 import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.KotlinCompilationData
 import org.jetbrains.kotlin.gradle.tasks.*
-import org.jetbrains.kotlin.gradle.tasks.FilteringSourceRootsContainer
-import org.jetbrains.kotlin.gradle.tasks.SourceRoots
 import org.jetbrains.kotlin.gradle.utils.isParentOf
 import org.jetbrains.kotlin.incremental.classpathAsList
 import org.jetbrains.kotlin.incremental.destinationAsFile
@@ -39,10 +36,12 @@ import javax.inject.Inject
 
 @CacheableTask
 abstract class KaptGenerateStubsTask @Inject constructor(
-    workerExecutor: WorkerExecutor
-): KotlinCompile(
+    workerExecutor: WorkerExecutor,
+    objectFactory: ObjectFactory
+) : KotlinCompile(
     KotlinJvmOptionsImpl(),
-    workerExecutor
+    workerExecutor,
+    objectFactory
 ) {
 
     internal class Configurator(
@@ -71,23 +70,10 @@ abstract class KaptGenerateStubsTask @Inject constructor(
                     kotlinCompileTask.compilerArgumentsContributor
                 }
             )
-            task.jvmSourceRoots.set(
-                providerFactory.provider {
-                    kotlinCompileTask.getSourceRoots().let { compileTaskSourceRoots ->
-                        SourceRoots.ForJvm(
-                            compileTaskSourceRoots.kotlinSourceFiles.filter { task.isSourceRootAllowed(it) },
-                            compileTaskSourceRoots.javaSourceRoots.filter { task.isSourceRootAllowed(it) }
-                        )
-                    }
-                }
-            )
             task.verbose.set(KaptTask.queryKaptVerboseProperty(task.project))
         }
     }
 
-    @field:Transient
-    override val sourceRootsContainer = FilteringSourceRootsContainer(objects, { isSourceRootAllowed(it) })
-
     @get:OutputDirectory
     abstract val stubsDir: DirectoryProperty
 
@@ -118,28 +104,45 @@ abstract class KaptGenerateStubsTask @Inject constructor(
     @get:Incremental
     abstract val additionalSources: ConfigurableFileCollection
 
-    override fun setSource(vararg source: Any) {
-        super.setSource(sourceRootsContainer.add(sources))
-    }
+    private fun File.isSourceRootAllowed(): Boolean =
+        !destinationDirectory.get().asFile.isParentOf(this) &&
+                !stubsDir.asFile.get().isParentOf(this) &&
+                generatedSourcesDirs.none { it.isParentOf(this) }
 
-    override fun setSource(source: Any) {
-        super.setSource(sourceRootsContainer.set(sources))
-    }
+    override fun skipCondition(): Boolean = sources.isEmpty && javaSources.isEmpty
 
-    // TODO: prevent querying destinationDirectory on configuration time
-    private fun isSourceRootAllowed(source: File): Boolean =
-        !destinationDirectory.get().asFile.isParentOf(source) &&
-                !stubsDir.asFile.get().isParentOf(source) &&
-                generatedSourcesDirs.none { it.isParentOf(source) }
+    // Task need to run even if there is no Kotlin sources, but only Java
+    @get:Incremental
+    @get:InputFiles
+    @get:IgnoreEmptyDirectories
+    @get:PathSensitive(PathSensitivity.RELATIVE)
+    override val sources: FileCollection = super.sources
+        .asFileTree
+        .matching { patternFilterable ->
+            patternFilterable.include { it.isDirectory || it.file.isSourceRootAllowed() }
+        }
+
+    override val javaSources: FileCollection = super.javaSources
+        .asFileTree
+        .matching { patternFilterable ->
+            patternFilterable.include { it.isDirectory || it.file.isSourceRootAllowed() }
+        }
 
     @get:Internal
     internal abstract val compileKotlinArgumentsContributor: Property<CompilerArgumentsContributor<K2JVMCompilerArguments>>
 
-    override fun setupCompilerArgs(args: K2JVMCompilerArguments, defaultsOnly: Boolean, ignoreClasspathResolutionErrors: Boolean) {
-        compileKotlinArgumentsContributor.get().contributeArguments(args, compilerArgumentsConfigurationFlags(
-            defaultsOnly,
-            ignoreClasspathResolutionErrors
-        ))
+    override fun setupCompilerArgs(
+        args: K2JVMCompilerArguments,
+        defaultsOnly: Boolean,
+        ignoreClasspathResolutionErrors: Boolean
+    ) {
+        compileKotlinArgumentsContributor.get().contributeArguments(
+            args,
+            compilerArgumentsConfigurationFlags(
+                defaultsOnly,
+                ignoreClasspathResolutionErrors
+            )
+        )
 
         val pluginOptionsWithKapt = pluginOptions.withWrappedKaptOptions(withApClasspath = kaptClasspath)
         args.pluginOptions = (pluginOptionsWithKapt.arguments + args.pluginOptions!!).toTypedArray()
@@ -148,9 +151,4 @@ abstract class KaptGenerateStubsTask @Inject constructor(
         args.classpathAsList = this.classpath.filter { it.exists() }.toList()
         args.destinationAsFile = this.destinationDirectory.get().asFile
     }
-
-    @get:Internal
-    internal abstract val jvmSourceRoots: Property<SourceRoots.ForJvm>
-
-    override fun getSourceRoots(): SourceRoots.ForJvm = jvmSourceRoots.get()
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptTask.kt

@@ -1,10 +1,10 @@
 package org.jetbrains.kotlin.gradle.internal
 
+import org.gradle.api.DefaultTask
 import org.gradle.api.Project
 import org.gradle.api.file.ConfigurableFileCollection
 import org.gradle.api.file.DirectoryProperty
 import org.gradle.api.file.FileCollection
-import org.gradle.api.internal.ConventionTask
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.ListProperty
 import org.gradle.api.provider.Property
@@ -31,20 +31,16 @@ import javax.inject.Inject
 @CacheableTask
 abstract class KaptTask @Inject constructor(
     objectFactory: ObjectFactory
-) : ConventionTask(),
+) : DefaultTask(),
     TaskWithLocalState,
     UsesKotlinJavaToolchain {
 
     open class Configurator<T: KaptTask>(protected val kotlinCompileTask: KotlinCompile) : TaskConfigurator<T> {
         override fun configure(task: T) {
             val objectFactory = task.project.objects
-            val providerFactory = task.project.providers
 
             task.compilerClasspath.from({ kotlinCompileTask.defaultCompilerClasspath })
             task.classpath.from(kotlinCompileTask.classpath)
-            task.kotlinSourceRoots.value(
-                providerFactory.provider { kotlinCompileTask.sourceRootsContainer.sourceRoots }
-            ).disallowChanges()
             task.compiledSources.from(
                 kotlinCompileTask.destinationDirectory,
                 Callable { kotlinCompileTask.javaOutputDir.takeIf { it.isPresent } }
@@ -52,7 +48,10 @@ abstract class KaptTask @Inject constructor(
             task.sourceSetName.value(kotlinCompileTask.sourceSetName).disallowChanges()
             task.localStateDirectories.from(Callable { task.incAptCache.orNull }).disallowChanges()
             task.source.from(
-                objectFactory.fileCollection().from(task.kotlinSourceRoots, task.stubsDir).asFileTree
+                objectFactory.fileCollection().from(
+                    kotlinCompileTask.javaSources,
+                    task.stubsDir
+                ).asFileTree
                     .matching { it.include("**/*.java") }
                     .filter { f -> task.isRootAllowed(f) }
             ).disallowChanges()
@@ -153,9 +152,6 @@ abstract class KaptTask @Inject constructor(
     @get:Internal
     var useBuildCache: Boolean = false
 
-    @get:Internal
-    abstract val kotlinSourceRoots: ListProperty<File>
-
     /** Needed for the model builder. */
     @get:Internal
     abstract val sourceSetName: Property<String>

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

@@ -8,12 +8,10 @@ package org.jetbrains.kotlin.gradle.plugin.mpp
 import groovy.lang.Closure
 import org.gradle.api.Plugin
 import org.gradle.api.Project
-import org.gradle.api.attributes.Attribute
 import org.gradle.api.attributes.AttributeContainer
 import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.internal.plugins.DslObject
 import org.gradle.api.plugins.JavaBasePlugin
-import org.gradle.api.tasks.SourceTask
 import org.gradle.api.tasks.TaskProvider
 import org.gradle.jvm.tasks.Jar
 import org.gradle.util.ConfigureUtil
@@ -26,7 +24,6 @@ import org.jetbrains.kotlin.gradle.internal.customizeKotlinDependencies
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinMultiplatformPlugin.Companion.sourceSetFreeCompilerArgsPropertyName
 import org.jetbrains.kotlin.gradle.plugin.mpp.internal.handleHierarchicalStructureFlagsMigration
-import org.jetbrains.kotlin.gradle.plugin.mpp.isMain
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.hasKpmModel
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.registerDefaultVariantFactories
@@ -41,6 +38,7 @@ import org.jetbrains.kotlin.gradle.plugin.statistics.KotlinBuildStatsService
 import org.jetbrains.kotlin.gradle.scripting.internal.ScriptingGradleSubplugin
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTargetPreset
 import org.jetbrains.kotlin.gradle.targets.native.tasks.artifact.registerKotlinArtifactsExtension
+import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompileTool
 import org.jetbrains.kotlin.gradle.tasks.locateTask
 import org.jetbrains.kotlin.gradle.tasks.registerTask
 import org.jetbrains.kotlin.gradle.utils.*
@@ -187,7 +185,7 @@ class KotlinMultiplatformPlugin : Plugin<Project> {
             (sourceSet.languageSettings as? DefaultLanguageSettingsBuilder)?.run {
                 compilerPluginOptionsTask = lazy {
                     val associatedCompilation = primaryCompilationsBySourceSet[sourceSet] ?: metadataCompilation
-                    project.tasks.getByName(associatedCompilation.compileKotlinTaskName) as SourceTask
+                    project.tasks.getByName(associatedCompilation.compileKotlinTaskName) as AbstractKotlinCompileTool<*>
                 }
             }
         }

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

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.gradle.plugin.sources
 import org.gradle.api.InvalidUserDataException
 import org.gradle.api.file.FileCollection
 import org.gradle.api.provider.Provider
-import org.gradle.api.tasks.SourceTask
 import org.jetbrains.kotlin.config.ApiVersion
 import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.config.LanguageVersion
@@ -16,6 +15,7 @@ import org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
 import org.jetbrains.kotlin.gradle.plugin.LanguageSettingsBuilder
 import org.jetbrains.kotlin.gradle.plugin.statistics.KotlinBuildStatsService
 import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
+import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompileTool
 import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinNativeCompile
 import org.jetbrains.kotlin.project.model.LanguageSettings
 import org.jetbrains.kotlin.statistics.metrics.BooleanMetrics
@@ -70,7 +70,7 @@ internal class DefaultLanguageSettingsBuilder : LanguageSettingsBuilder {
 
     /* A Kotlin task that is responsible for code analysis of the owner of this language settings builder. */
     @Transient // not needed during Gradle Instant Execution
-    var compilerPluginOptionsTask: Lazy<SourceTask?> = lazyOf(null)
+    var compilerPluginOptionsTask: Lazy<AbstractKotlinCompileTool<*>?> = lazyOf(null)
 
     val compilerPluginArguments: List<String>?
         get() {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsDcePlugin.kt

@@ -78,7 +78,7 @@ class KotlinJsDcePlugin : Plugin<Project> {
             dceTask.configure {
                 it.classpath.from(configuration)
                 it.destinationDirectory.set(it.dceOptions.outputDirectory?.let { File(it) } ?: outputDir)
-                it.setSource((kotlinTask.get() as Kotlin2JsCompile).outputFileProperty)
+                it.setSource(kotlinTask.map { task -> (task as Kotlin2JsCompile).outputFileProperty })
             }
         }
     }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt

@@ -101,9 +101,10 @@ open class KotlinBrowserJsIr @Inject constructor(target: KotlinJsIrTarget) :
                     ),
                     listOf(compilation)
                 ) { task ->
-                    val entryFileProvider = binary.linkSyncTask.map {
-                        it.destinationDir
-                            .resolve(binary.linkTask.get().outputFileProperty.get().name)
+                    val entryFileProvider = binary.linkSyncTask.flatMap { syncTask ->
+                        binary.linkTask.map {
+                            syncTask.destinationDir.resolve(it.outputFileProperty.get().name)
+                        }
                     }
 
                     webpackMajorVersion.choose(

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrLink.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.gradle.targets.js.ir
 
 import org.gradle.api.file.ConfigurableFileCollection
 import org.gradle.api.file.DirectoryProperty
+import org.gradle.api.file.FileCollection
 import org.gradle.api.file.ProjectLayout
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.tasks.*
@@ -25,7 +26,6 @@ import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsBinaryMode.DEVELOPMENT
 import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsBinaryMode.PRODUCTION
 import org.jetbrains.kotlin.gradle.tasks.Kotlin2JsCompile
 import org.jetbrains.kotlin.gradle.utils.getValue
-import org.jetbrains.kotlin.gradle.utils.property
 import org.jetbrains.kotlin.gradle.utils.toHexString
 import org.jetbrains.kotlin.statistics.metrics.BooleanMetrics
 import org.jetbrains.kotlin.statistics.metrics.StringMetrics
@@ -57,6 +57,18 @@ abstract class KotlinJsIrLink @Inject constructor(
         }
     }
 
+    init {
+        // Not check sources, only klib module
+        disallowSourceChanges()
+    }
+
+    @get:Internal
+    override val sources: FileCollection = super.sources
+
+    override fun skipCondition(): Boolean {
+        return !entryModule.get().asFile.exists()
+    }
+
     @Transient
     @get:Internal
     internal lateinit var compilation: KotlinCompilationData<*>
@@ -81,10 +93,6 @@ abstract class KotlinJsIrLink @Inject constructor(
     @Input
     lateinit var mode: KotlinJsBinaryMode
 
-    // Not check sources, only klib module
-    @get:Internal
-    abstract override val sources: ConfigurableFileCollection
-
     private val buildDir = project.buildDir
 
     @get:SkipWhenEmpty
@@ -93,23 +101,24 @@ abstract class KotlinJsIrLink @Inject constructor(
     @get:PathSensitive(PathSensitivity.RELATIVE)
     internal abstract val entryModule: DirectoryProperty
 
-    override val destinationDirectory: DirectoryProperty
-        get() = objectFactory.directoryProperty().apply {
+    @get:Internal
+    override val destinationDirectory: DirectoryProperty = objectFactory.directoryProperty()
+
+    @get:OutputDirectory
+    val normalizedDestinationDirectory: DirectoryProperty = objectFactory
+        .directoryProperty()
+        .apply {
             set(
-                destinationDirectory.flatMap { dir ->
-                    if (kotlinOptions.outputFile == null) {
-                        objectFactory.property(dir)
+                destinationDirectory.map { dir ->
+                    if (kotlinOptions.outputFile != null) {
+                        projectLayout.dir(outputFileProperty.map { it.parentFile }).get()
                     } else {
-                        projectLayout.dir(outputFileProperty.map { it.parentFile })
+                        dir
                     }
                 }
             )
         }
 
-    override fun skipCondition(): Boolean {
-        return !entryModule.get().asFile.exists()
-    }
-
     @get:Internal
     val rootCacheDirectory by lazy {
         buildDir.resolve("klib/cache")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTarget.kt

@@ -136,7 +136,11 @@ constructor(
             binary.linkSyncTaskName
         ) { task ->
             task.from(
-                project.layout.file(binary.linkTask.flatMap { it.destinationDirectory.map { it.asFile } })
+                project.layout.file(
+                    binary.linkTask.flatMap { linkTask ->
+                        linkTask.normalizedDestinationDirectory.map { it.asFile }
+                    }
+                )
             )
 
             task.from(project.tasks.named(compilation.processResourcesTaskName))

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/tasks/KotlinNativeTasks.kt

@@ -18,6 +18,7 @@ import org.gradle.api.file.ConfigurableFileCollection
 import org.gradle.api.file.DirectoryProperty
 import org.gradle.api.file.FileCollection
 import org.gradle.api.file.FileTree
+import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.*
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
@@ -132,7 +133,10 @@ abstract class AbstractKotlinNativeCompile<
         T : KotlinCommonToolOptions,
         K : KotlinNativeCompilationData<*>,
         M : CommonToolArguments
-        > : AbstractKotlinCompileTool<M>() {
+        >
+@Inject constructor(
+    private val objectFactory: ObjectFactory
+): AbstractKotlinCompileTool<M>(objectFactory) {
     @get:Internal
     abstract val compilation: K
 
@@ -149,9 +153,6 @@ abstract class AbstractKotlinNativeCompile<
     @get:Internal
     abstract val baseName: String
 
-    @get:Internal
-    protected val objects = project.objects
-
     @get:Internal
     protected val konanTarget by project.provider {
         compilation.konanTarget
@@ -162,7 +163,7 @@ abstract class AbstractKotlinNativeCompile<
         // Avoid resolving these dependencies during task graph construction when we can't build the target:
         if (konanTarget.enabledOnCurrentHost)
             compilation.compileDependencyFiles.filterOutPublishableInteropLibs(project)
-        else objects.fileCollection()
+        else objectFactory.fileCollection()
     }
 
     @get:Classpath
@@ -172,7 +173,7 @@ abstract class AbstractKotlinNativeCompile<
 
     @Deprecated("For native tasks use 'libraries' instead", ReplaceWith("libraries"))
     override val classpath: ConfigurableFileCollection
-        get() = objects.fileCollection().from(libraries)
+        get() = objectFactory.fileCollection().from(libraries)
 
     @get:Input
     val target: String by project.provider { compilation.konanTarget.name }
@@ -209,7 +210,7 @@ abstract class AbstractKotlinNativeCompile<
 
     @get:Internal
     open val outputFile: Provider<File>
-        get() = destinationDirectory.map {
+        get() = destinationDirectory.flatMap {
             val prefix = outputKind.prefix(konanTarget)
             val suffix = outputKind.suffix(konanTarget)
             val filename = "$prefix${baseName}$suffix".let {
@@ -222,7 +223,7 @@ abstract class AbstractKotlinNativeCompile<
                 }
             }
 
-            it.file(filename).asFile
+            objectFactory.property(it.file(filename).asFile)
         }
 
     // endregion
@@ -309,8 +310,9 @@ abstract class KotlinNativeCompile
 constructor(
     @Internal
     @Transient  // can't be serialized for Gradle configuration cache
-    final override val compilation: KotlinNativeCompilationData<*>
-) : AbstractKotlinNativeCompile<KotlinCommonOptions, KotlinNativeCompilationData<*>, StubK2NativeCompilerArguments>(),
+    final override val compilation: KotlinNativeCompilationData<*>,
+    objectFactory: ObjectFactory
+) : AbstractKotlinNativeCompile<KotlinCommonOptions, KotlinNativeCompilationData<*>, StubK2NativeCompilerArguments>(objectFactory),
     KotlinCompile<KotlinCommonOptions> {
 
     @get:Input
@@ -463,8 +465,9 @@ abstract class KotlinNativeLink
 @Inject
 constructor(
     @Internal
-    val binary: NativeBinary
-) : AbstractKotlinNativeCompile<KotlinCommonToolOptions, KotlinNativeCompilation, StubK2NativeCompilerArguments>() {
+    val binary: NativeBinary,
+    objectFactory: ObjectFactory
+) : AbstractKotlinNativeCompile<KotlinCommonToolOptions, KotlinNativeCompilation, StubK2NativeCompilerArguments>(objectFactory) {
     @get:Internal
     final override val compilation: KotlinNativeCompilation
         get() = binary.compilation
@@ -474,17 +477,13 @@ constructor(
         // Frameworks actively uses symlinks.
         // Gradle build cache transforms symlinks into regular files https://guides.gradle.org/using-build-cache/#symbolic_links
         outputs.cacheIf { outputKind != FRAMEWORK }
+
+        this.setSource(compilation.compileKotlinTask.outputFile)
+        includes.clear() // we need to include non '.kt' or '.kts' files
+        disallowSourceChanges()
     }
 
-    @Internal // Taken into account by getSources().
-    val intermediateLibrary: Provider<File> = project.provider { compilation.compileKotlinTask.outputFile.get() }
-
-    override val sources: ConfigurableFileCollection = objects
-        .fileCollection()
-        .from(intermediateLibrary)
-        .apply { disallowChanges() }
-
-    override val destinationDirectory: DirectoryProperty = objects.directoryProperty().apply {
+    override val destinationDirectory: DirectoryProperty = objectFactory.directoryProperty().apply {
         set(binary.outputDirectory)
     }
 
@@ -553,7 +552,7 @@ constructor(
             if (it is AbstractNativeLibrary) {
                 project.configurations.getByName(it.exportConfigurationName)
             } else {
-                objects.fileCollection()
+                objectFactory.fileCollection()
             }
         }
     }
@@ -652,7 +651,7 @@ constructor(
             binaryOptions,
             isStaticFramework,
             exportLibraries.files.filterKlibsPassedToCompiler(),
-            listOf(intermediateLibrary.get()),
+            sources.asFileTree.files.toList(),
             externalDependenciesArgs + cacheArgs
         )
 

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

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.gradle.tasks
 
 import org.gradle.api.Project
 import org.gradle.api.file.ConfigurableFileCollection
+import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.*
 import org.gradle.work.InputChanges
@@ -46,8 +47,10 @@ import javax.inject.Inject
 @CacheableTask
 abstract class KotlinCompileCommon @Inject constructor(
     override val kotlinOptions: KotlinMultiplatformCommonOptions,
-    workerExecutor: WorkerExecutor
-) : AbstractKotlinCompile<K2MetadataCompilerArguments>(), KotlinCommonCompile {
+    workerExecutor: WorkerExecutor,
+    objectFactory: ObjectFactory
+) : AbstractKotlinCompile<K2MetadataCompilerArguments>(objectFactory),
+    KotlinCommonCompile {
 
     class Configurator(compilation: KotlinCompilationData<*>) : AbstractKotlinCompile.Configurator<KotlinCompileCommon>(compilation) {
         override fun configure(task: KotlinCompileCommon) {
@@ -85,7 +88,7 @@ abstract class KotlinCompileCommon @Inject constructor(
     }
 
     override val compilerRunner: Provider<GradleCompilerRunner> =
-        objects.propertyWithConvention(
+        objectFactory.propertyWithConvention(
             gradleCompileTaskProvider.map {
                 GradleCompilerRunnerWithWorkers(
                     it,
@@ -101,9 +104,6 @@ abstract class KotlinCompileCommon @Inject constructor(
     override fun createCompilerArgs(): K2MetadataCompilerArguments =
         K2MetadataCompilerArguments()
 
-    override fun getSourceRoots(): SourceRoots =
-        SourceRoots.KotlinOnly.create(sources, sourceFilesExtensions.get())
-
     override fun setupCompilerArgs(args: K2MetadataCompilerArguments, defaultsOnly: Boolean, ignoreClasspathResolutionErrors: Boolean) {
         args.apply { fillDefaultValues() }
         super.setupCompilerArgs(args, defaultsOnly = defaultsOnly, ignoreClasspathResolutionErrors = ignoreClasspathResolutionErrors)
@@ -132,14 +132,14 @@ abstract class KotlinCompileCommon @Inject constructor(
     @get:PathSensitive(PathSensitivity.RELATIVE)
     @get:IgnoreEmptyDirectories
     @get:InputFiles
-    internal val refinesMetadataPaths: ConfigurableFileCollection = objects.fileCollection()
+    internal val refinesMetadataPaths: ConfigurableFileCollection = objectFactory.fileCollection()
 
     @get:Internal
-    internal val expectActualLinker = objects.property(Boolean::class.java)
+    internal val expectActualLinker = objectFactory.property(Boolean::class.java)
 
     override fun callCompilerAsync(
         args: K2MetadataCompilerArguments,
-        sourceRoots: SourceRoots,
+        kotlinSources: Set<File>,
         inputChanges: InputChanges,
         taskOutputsBackup: TaskOutputsBackup?
     ) {
@@ -152,7 +152,7 @@ abstract class KotlinCompileCommon @Inject constructor(
             outputFiles = allOutputFiles()
         )
         compilerRunner.runMetadataCompilerAsync(
-            sourceRoots.kotlinSourceFiles.files.toList(),
+            kotlinSources.toList(),
             commonSourceSet.files.toList(),
             args,
             environment

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

@@ -16,11 +16,12 @@
 
 package org.jetbrains.kotlin.gradle.tasks
 
-import org.gradle.api.tasks.CacheableTask
-import org.gradle.api.tasks.Input
-import org.gradle.api.tasks.Internal
-import org.gradle.api.tasks.TaskAction
+import org.gradle.api.file.ConfigurableFileCollection
+import org.gradle.api.file.FileCollection
+import org.gradle.api.model.ObjectFactory
+import org.gradle.api.tasks.*
 import org.gradle.work.ChangeType
+import org.gradle.work.Incremental
 import org.gradle.work.InputChanges
 import org.jetbrains.kotlin.cli.common.arguments.DevModeOverwritingStrategies
 import org.jetbrains.kotlin.cli.common.arguments.K2JSDceArguments
@@ -31,17 +32,21 @@ import org.jetbrains.kotlin.gradle.dsl.KotlinJsDceOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJsDceOptionsImpl
 import org.jetbrains.kotlin.gradle.logging.GradleKotlinLogger
 import org.jetbrains.kotlin.gradle.utils.canonicalPathWithoutExtension
+import org.jetbrains.kotlin.gradle.utils.fileExtensionCasePermutations
 import java.io.File
+import javax.inject.Inject
 
 @CacheableTask
-abstract class KotlinJsDce : AbstractKotlinCompileTool<K2JSDceArguments>(), KotlinJsDce {
+abstract class KotlinJsDce @Inject constructor(
+    objectFactory: ObjectFactory
+) : AbstractKotlinCompileTool<K2JSDceArguments>(objectFactory),
+    KotlinJsDce {
 
     init {
         cacheOnlyIfEnabledForKotlin()
-    }
 
-    @get:Internal
-    internal val objects = project.objects
+        include("js".fileExtensionCasePermutations().map { "**/*.$it" })
+    }
 
     override fun createCompilerArgs(): K2JSDceArguments = K2JSDceArguments()
 
@@ -70,9 +75,18 @@ abstract class KotlinJsDce : AbstractKotlinCompileTool<K2JSDceArguments>(), Kotl
     @Input
     var jvmArgs = mutableListOf<String>()
 
-    private val buildDir by lazy {
-        project.buildDir
-    }
+    // Source could be empty, while classpath not
+    @get:Incremental
+    @get:InputFiles
+    @get:IgnoreEmptyDirectories
+    @get:PathSensitive(PathSensitivity.RELATIVE)
+    override val sources: FileCollection = super.sources
+
+    @get:Incremental
+    @get:InputFiles
+    abstract override val classpath: ConfigurableFileCollection
+
+    private val buildDir = project.layout.buildDirectory
 
     private val isDevMode
         get() = dceOptions.devMode || "-dev-mode" in dceOptions.freeCompilerArgs
@@ -95,7 +109,7 @@ abstract class KotlinJsDce : AbstractKotlinCompileTool<K2JSDceArguments>(), Kotl
         } else {
             classpath.asFileTree.files
         }
-        // TODO: use PatternFilterable here!
+
         val inputFiles = sources.asFileTree.files.plus(classpathFiles)
             .filter { !kotlinFilesOnly || isDceCandidate(it) }
             .map { it.path }
@@ -120,7 +134,7 @@ abstract class KotlinJsDce : AbstractKotlinCompileTool<K2JSDceArguments>(), Kotl
             K2JSDce::class.java.name,
             defaultCompilerClasspath,
             log,
-            buildDir,
+            buildDir.get().asFile,
             jvmArgs
         )
         throwGradleExceptionIfError(exitCode, KotlinCompilerExecutionStrategy.OUT_OF_PROCESS)

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

@@ -1,109 +0,0 @@
-package org.jetbrains.kotlin.gradle.tasks
-
-import org.gradle.api.file.FileCollection
-import org.gradle.api.file.FileTree
-import org.gradle.api.file.SourceDirectorySet
-import org.gradle.api.logging.Logger
-import org.gradle.api.model.ObjectFactory
-import org.gradle.api.provider.Provider
-import org.jetbrains.kotlin.gradle.logging.kotlinDebug
-import org.jetbrains.kotlin.gradle.utils.isJavaFile
-import org.jetbrains.kotlin.gradle.utils.isKotlinFile
-import org.jetbrains.kotlin.gradle.utils.isParentOf
-import java.io.File
-import java.util.concurrent.Callable
-
-internal sealed class SourceRoots(val kotlinSourceFiles: FileCollection) {
-    private companion object {
-        fun dumpPaths(files: Iterable<File>): String =
-            "[${files.map { it.canonicalPath }.sorted().joinToString(prefix = "\n\t", separator = ",\n\t")}]"
-    }
-
-    open fun log(taskName: String, logger: Logger) {
-        logger.kotlinDebug { "$taskName source roots: ${dumpPaths(kotlinSourceFiles.files)}" }
-    }
-
-    class ForJvm constructor(
-        kotlinSourceFiles: FileCollection,
-        val javaSourceRoots: FileCollection
-    ) : SourceRoots(kotlinSourceFiles) {
-
-        companion object {
-            fun create(
-                taskSource: FileCollection,
-                sourceRoots: FilteringSourceRootsContainer,
-                sourceFilesExtensions: List<String>
-            ): ForJvm {
-                return ForJvm(
-                    taskSource.filter { it.isKotlinFile(sourceFilesExtensions) },
-                    sourceRoots.sourceRoots.filterJavaRoots(
-                        taskSource.filter { it.isJavaFile() }
-                    )
-                )
-            }
-
-            private fun FileCollection.filterJavaRoots(
-                sourceDirs: FileCollection
-            ): FileCollection = filter { sourceRoot ->
-                sourceDirs.asSequence().map { it.parentFile }.any { sourceRoot.isParentOf(it) }
-            }
-        }
-
-        override fun log(taskName: String, logger: Logger) {
-            super.log(taskName, logger)
-            logger.kotlinDebug { "$taskName java source roots: ${dumpPaths(javaSourceRoots.files)}" }
-        }
-    }
-
-    class KotlinOnly(kotlinSourceFiles: FileCollection) : SourceRoots(kotlinSourceFiles) {
-        companion object {
-            fun create(
-                taskSource: FileCollection,
-                sourceFilesExtensions: List<String>
-            ) = KotlinOnly(
-                taskSource.filter { it.isKotlinFile(sourceFilesExtensions) }
-            )
-        }
-    }
-}
-
-internal class FilteringSourceRootsContainer(
-    private val objectFactory: ObjectFactory,
-    val filter: (File) -> Boolean = { true }
-) {
-    private val sourceContainers: MutableList<Any> = mutableListOf()
-
-    private fun getFilteredSourceRootsFrom(any: Any) = objectFactory.fileCollection().from(Callable {
-        val resultItems = mutableListOf<Any>()
-        fun getRootsFrom(item: Any?) {
-            when (item) {
-                is SourceDirectorySet -> resultItems.add(item.sourceDirectories)
-                is Callable<*> -> getRootsFrom(item.call())
-                is Provider<*> -> if (item.isPresent) getRootsFrom(item.get())
-                is FileCollection -> resultItems.add(item)
-                is Iterable<*> -> item.forEach { getRootsFrom(it) }
-                is Array<*> -> item.forEach { getRootsFrom(it) }
-                is Any /* not null */ -> resultItems.add(item)
-            }
-        }
-        getRootsFrom(any)
-        resultItems
-    }).filter(filter)
-
-    val sourceRoots: FileCollection
-        get() = getFilteredSourceRootsFrom(sourceContainers)
-
-    fun clear() {
-        sourceContainers.clear()
-    }
-
-    fun set(source: Any): FileCollection {
-        clear()
-        return add(source)
-    }
-
-    fun add(vararg sources: Any): FileCollection {
-        sourceContainers.addAll(sources.toList())
-        return getFilteredSourceRootsFrom(sources)
-    }
-}

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

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.gradle.tasks
 
+import groovy.lang.Closure
 import org.gradle.api.DefaultTask
 import org.gradle.api.GradleException
 import org.gradle.api.Project
@@ -19,10 +20,12 @@ import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.api.services.BuildService
 import org.gradle.api.services.BuildServiceParameters
+import org.gradle.api.specs.Spec
 import org.gradle.api.tasks.*
 import org.gradle.api.tasks.compile.AbstractCompile
 import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.util.PatternFilterable
+import org.gradle.api.tasks.util.PatternSet
 import org.gradle.work.ChangeType
 import org.gradle.work.Incremental
 import org.gradle.work.InputChanges
@@ -57,13 +60,10 @@ import org.jetbrains.kotlin.gradle.report.BuildReportMode
 import org.jetbrains.kotlin.gradle.report.ReportingSettings
 import org.jetbrains.kotlin.gradle.targets.js.ir.isProduceUnzippedKlib
 import org.jetbrains.kotlin.gradle.utils.*
-import org.jetbrains.kotlin.incremental.ChangedFiles
-import org.jetbrains.kotlin.incremental.ClasspathChanges
+import org.jetbrains.kotlin.incremental.*
 import org.jetbrains.kotlin.incremental.ClasspathChanges.ClasspathSnapshotDisabled
 import org.jetbrains.kotlin.incremental.ClasspathChanges.ClasspathSnapshotEnabled.*
 import org.jetbrains.kotlin.incremental.ClasspathChanges.ClasspathSnapshotEnabled.IncrementalRun.*
-import org.jetbrains.kotlin.incremental.ClasspathSnapshotFiles
-import org.jetbrains.kotlin.incremental.IncrementalCompilerRunner
 import org.jetbrains.kotlin.library.impl.isKotlinLibrary
 import org.jetbrains.kotlin.statistics.metrics.BooleanMetrics
 import org.jetbrains.kotlin.utils.JsLibraryUtils
@@ -77,24 +77,44 @@ const val USING_JVM_INCREMENTAL_COMPILATION_MESSAGE = "Using Kotlin/JVM incremen
 const val USING_JS_INCREMENTAL_COMPILATION_MESSAGE = "Using Kotlin/JS incremental compilation"
 const val USING_JS_IR_BACKEND_MESSAGE = "Using Kotlin/JS IR backend"
 
-abstract class AbstractKotlinCompileTool<T : CommonToolArguments>
-    : DefaultTask(),
-    //PatternFilterable,
+abstract class AbstractKotlinCompileTool<T : CommonToolArguments> @Inject constructor(
+    objectFactory: ObjectFactory
+) : DefaultTask(),
+    PatternFilterable,
     CompilerArgumentAwareWithInput<T>,
     TaskWithLocalState {
 
+    private val patternFilterable = PatternSet()
+
+    init {
+        patternFilterable.include(
+            DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS.flatMap { ext -> ext.fileExtensionCasePermutations().map { "**/*.$it" } }
+        )
+    }
+
+    private val sourceFiles = objectFactory.fileCollection()
+
     @get:InputFiles
     @get:SkipWhenEmpty
     @get:IgnoreEmptyDirectories
     @get:PathSensitive(PathSensitivity.RELATIVE)
-    abstract val sources: ConfigurableFileCollection
+    open val sources: FileCollection = objectFactory.fileCollection()
+        .from(
+            { sourceFiles.asFileTree.matching(patternFilterable) }
+        )
+
+    @Deprecated("Use PatternFilterable methods to configure sources")
+    @get:Input
+    val sourceFilesExtensions: ListProperty<String> = objectFactory
+        .listProperty(String::class.java)
+        .convention(DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS)
 
     /**
      * Sets the source for this task.
      * The given source object is evaluated as per [org.gradle.api.Project.files].
      */
     open fun setSource(source: Any) {
-        sources.from(source)
+        sourceFiles.from(source)
     }
 
     /**
@@ -102,7 +122,57 @@ abstract class AbstractKotlinCompileTool<T : CommonToolArguments>
      * The given source object is evaluated as per [org.gradle.api.Project.files].
      */
     open fun setSource(vararg source: Any) {
-        sources.from(source)
+        sourceFiles.from(source)
+    }
+
+    fun disallowSourceChanges() {
+        sourceFiles.disallowChanges()
+    }
+
+    @Internal
+    final override fun getIncludes(): MutableSet<String> = patternFilterable.includes
+
+    @Internal
+    final override fun getExcludes(): MutableSet<String> = patternFilterable.excludes
+
+    final override fun setIncludes(includes: Iterable<String>): PatternFilterable = also {
+        patternFilterable.setIncludes(includes)
+    }
+
+    final override fun setExcludes(excludes: Iterable<String>): PatternFilterable = also {
+        patternFilterable.setExcludes(excludes)
+    }
+
+    final override fun include(vararg includes: String?): PatternFilterable = also {
+        patternFilterable.include(*includes)
+    }
+
+    final override fun include(includes: Iterable<String>): PatternFilterable = also {
+        patternFilterable.include(includes)
+    }
+
+    final override fun include(includeSpec: Spec<FileTreeElement>): PatternFilterable = also {
+        patternFilterable.include(includeSpec)
+    }
+
+    final override fun include(includeSpec: Closure<*>): PatternFilterable = also {
+        patternFilterable.include(includeSpec)
+    }
+
+    final override fun exclude(vararg excludes: String?): PatternFilterable = also {
+        patternFilterable.exclude(*excludes)
+    }
+
+    final override fun exclude(excludes: Iterable<String>): PatternFilterable = also {
+        patternFilterable.exclude(excludes)
+    }
+
+    final override fun exclude(excludeSpec: Spec<FileTreeElement>): PatternFilterable = also {
+        patternFilterable.exclude(excludeSpec)
+    }
+
+    final override fun exclude(excludeSpec: Closure<*>): PatternFilterable = also {
+        patternFilterable.exclude(excludeSpec)
     }
 
     @get:Classpath
@@ -187,7 +257,9 @@ abstract class GradleCompileTaskProvider @Inject constructor(
     )
 }
 
-abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotlinCompileTool<T>(),
+abstract class AbstractKotlinCompile<T : CommonCompilerArguments> @Inject constructor(
+    objectFactory: ObjectFactory
+) : AbstractKotlinCompileTool<T>(objectFactory),
     CompileUsingKotlinDaemonWithNormalization {
 
     open class Configurator<T : AbstractKotlinCompile<*>>(protected val compilation: KotlinCompilationData<*>) : TaskConfigurator<T> {
@@ -238,16 +310,13 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
     @get:Inject
     internal abstract val fileSystemOperations: FileSystemOperations
 
-    @get:Internal
-    protected val objects: ObjectFactory = project.objects
-
     // avoid creating directory in getter: this can lead to failure in parallel build
     @get:OutputDirectory
-    internal val taskBuildCacheableOutputDirectory: DirectoryProperty = objects.directoryProperty()
+    internal val taskBuildCacheableOutputDirectory: DirectoryProperty = objectFactory.directoryProperty()
 
     // avoid creating directory in getter: this can lead to failure in parallel build
     @get:LocalState
-    internal val taskBuildLocalStateDirectory: DirectoryProperty = objects.directoryProperty()
+    internal val taskBuildLocalStateDirectory: DirectoryProperty = objectFactory.directoryProperty()
 
     @get:Internal
     internal val buildHistoryFile
@@ -277,20 +346,18 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
     internal fun reportingSettings() = buildMetricsReporterService.orNull?.parameters?.reportingSettings ?: ReportingSettings()
 
     @get:Input
-    internal val useModuleDetection: Property<Boolean> = objects.property(Boolean::class.java).value(false)
+    internal val useModuleDetection: Property<Boolean> = objectFactory.property(Boolean::class.java).value(false)
 
     @get:Internal
     protected val multiModuleICSettings: MultiModuleICSettings
         get() = MultiModuleICSettings(buildHistoryFile.get().asFile, useModuleDetection.get())
 
     @get:Classpath
-    open val pluginClasspath: ConfigurableFileCollection = objects.fileCollection()
+    open val pluginClasspath: ConfigurableFileCollection = objectFactory.fileCollection()
 
     @get:Internal
     internal val pluginOptions = CompilerPluginOptions()
 
-    @get:Input
-    val sourceFilesExtensions: ListProperty<String> = objects.listProperty(String::class.java).value(DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS)
 
     /**
      * Plugin Data provided by [KpmCompilerPlugin]
@@ -302,52 +369,52 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
 
     // Input is needed to force rebuild even if source files are not changed
     @get:Input
-    internal val coroutines: Property<Coroutines> = objects.property(Coroutines::class.java)
+    internal val coroutines: Property<Coroutines> = objectFactory.property(Coroutines::class.java)
 
     @get:Internal
-    internal val javaOutputDir: DirectoryProperty = objects.directoryProperty()
+    internal val javaOutputDir: DirectoryProperty = objectFactory.directoryProperty()
 
     @get:Internal
-    internal val sourceSetName: Property<String> = objects.property(String::class.java)
+    internal val sourceSetName: Property<String> = objectFactory.property(String::class.java)
 
     @get:InputFiles
     @get:IgnoreEmptyDirectories
     @get:Incremental
     @get:PathSensitive(PathSensitivity.RELATIVE)
-    internal val commonSourceSet: ConfigurableFileCollection = objects.fileCollection()
+    internal val commonSourceSet: ConfigurableFileCollection = objectFactory.fileCollection()
 
     @get:Input
-    internal val moduleName: Property<String> = objects.property(String::class.java)
+    internal val moduleName: Property<String> = objectFactory.property(String::class.java)
 
     @get:Internal
     val abiSnapshotFile
         get() = taskBuildCacheableOutputDirectory.file(IncrementalCompilerRunner.ABI_SNAPSHOT_FILE_NAME)
 
     @get:Input
-    val abiSnapshotRelativePath: Property<String> = objects.property(String::class.java).value(
+    val abiSnapshotRelativePath: Property<String> = objectFactory.property(String::class.java).value(
         //TODO update to support any jar changes
         "$name/${IncrementalCompilerRunner.ABI_SNAPSHOT_FILE_NAME}"
     )
 
     @get:Internal
-    internal val friendSourceSets = objects.listProperty(String::class.java)
+    internal val friendSourceSets = objectFactory.listProperty(String::class.java)
 
     @get:Internal // takes part in the compiler arguments
-    val friendPaths: ConfigurableFileCollection = objects.fileCollection()
+    val friendPaths: ConfigurableFileCollection = objectFactory.fileCollection()
 
     private val kotlinLogger by lazy { GradleKotlinLogger(logger) }
 
     abstract override val kotlinDaemonJvmArguments: ListProperty<String>
 
     @get:Internal
-    protected val gradleCompileTaskProvider: Provider<GradleCompileTaskProvider> = objects
+    protected val gradleCompileTaskProvider: Provider<GradleCompileTaskProvider> = objectFactory
         .property(
-            objects.newInstance<GradleCompileTaskProvider>(project.gradle, this, project)
+            objectFactory.newInstance<GradleCompileTaskProvider>(project.gradle, this, project)
         )
 
     @get:Internal
     internal open val compilerRunner: Provider<GradleCompilerRunner> =
-        objects.propertyWithConvention(
+        objectFactory.propertyWithConvention(
             gradleCompileTaskProvider.map {
                 GradleCompilerRunner(
                     it,
@@ -410,8 +477,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
         buildMetricsReporterService.orNull?.also { it.addTask(path, this.javaClass, buildMetrics) }
     }
 
-    protected open fun skipCondition(): Boolean =
-        getSourceRoots().kotlinSourceFiles.isEmpty()
+    protected open fun skipCondition(): Boolean = sources.isEmpty
 
     private val projectDir = project.rootProject.projectDir
 
@@ -427,8 +493,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
         inputChanges: InputChanges,
         taskOutputsBackup: TaskOutputsBackup?
     ) {
-        val sourceRoots = getSourceRoots()
-        val allKotlinSources = sourceRoots.kotlinSourceFiles
+        val allKotlinSources = sources.asFileTree.files
 
         logger.kotlinDebug { "All kotlin sources: ${allKotlinSources.pathsAsStringRelativeTo(projectDir)}" }
 
@@ -438,13 +503,12 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
             return
         }
 
-        sourceRoots.log(this.name, logger)
         val args = prepareCompilerArguments()
         taskBuildCacheableOutputDirectory.get().asFile.mkdirs()
         taskBuildLocalStateDirectory.get().asFile.mkdirs()
         callCompilerAsync(
             args,
-            sourceRoots,
+            allKotlinSources,
             inputChanges,
             taskOutputsBackup
         )
@@ -472,22 +536,19 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
             }
     }
 
-    @Internal
-    internal abstract fun getSourceRoots(): SourceRoots
-
     /**
      * Compiler might be executed asynchronously. Do not do anything requiring end of compilation after this function is called.
      * @see [GradleKotlinCompilerWork]
      */
     internal abstract fun callCompilerAsync(
         args: T,
-        sourceRoots: SourceRoots,
+        kotlinSources: Set<File>,
         inputChanges: InputChanges,
         taskOutputsBackup: TaskOutputsBackup?
     )
 
     @get:Input
-    internal val multiPlatformEnabled: Property<Boolean> = objects.property(Boolean::class.java)
+    internal val multiPlatformEnabled: Property<Boolean> = objectFactory.property(Boolean::class.java)
 
     @get:Internal
     internal val abstractKotlinCompileArgumentsContributor by lazy {
@@ -536,8 +597,9 @@ internal inline val <reified T : Task> T.thisTaskProvider: TaskProvider<out T>
 @CacheableTask
 abstract class KotlinCompile @Inject constructor(
     override val kotlinOptions: KotlinJvmOptions,
-    workerExecutor: WorkerExecutor
-) : AbstractKotlinCompile<K2JVMCompilerArguments>(),
+    workerExecutor: WorkerExecutor,
+    private val objectFactory: ObjectFactory
+) : AbstractKotlinCompile<K2JVMCompilerArguments>(objectFactory),
     KotlinJvmCompile,
     UsesKotlinJavaToolchain {
 
@@ -635,16 +697,7 @@ abstract class KotlinCompile @Inject constructor(
     }
 
     @get:Internal
-    internal val parentKotlinOptionsImpl: Property<KotlinJvmOptions> = objects.property(KotlinJvmOptions::class.java)
-
-    @get:Internal
-    @field:Transient
-    internal open val sourceRootsContainer = FilteringSourceRootsContainer(objects)
-
-    private val jvmSourceRoots by project.provider {
-        // serialize in the task state for configuration caching; avoid building anew in task execution, as it may access the project model
-        SourceRoots.ForJvm.create(sources, sourceRootsContainer, sourceFilesExtensions.get())
-    }
+    internal val parentKotlinOptionsImpl: Property<KotlinJvmOptions> = objectFactory.property(KotlinJvmOptions::class.java)
 
     /** A package prefix that is used for locating Java sources in a directory structure with non-full-depth packages.
      *
@@ -691,23 +744,29 @@ abstract class KotlinCompile @Inject constructor(
     }
 
     override val incrementalProps: List<FileCollection>
-        get() = listOf(sources, commonSourceSet, classpathSnapshotProperties.classpath, classpathSnapshotProperties.classpathSnapshot)
+        get() = listOf(
+            sources,
+            javaSources,
+            commonSourceSet,
+            classpathSnapshotProperties.classpath,
+            classpathSnapshotProperties.classpathSnapshot
+        )
 
     // Exclude classpathSnapshotDir from TaskOutputsBackup (see TaskOutputsBackup's kdoc for more info). */
     override val taskOutputsBackupExcludes: List<File>
         get() = classpathSnapshotProperties.classpathSnapshotDir.orNull?.asFile?.let { listOf(it) } ?: emptyList()
 
     @get:Internal
-    internal val defaultKotlinJavaToolchain: Provider<DefaultKotlinJavaToolchain> = objects
+    internal val defaultKotlinJavaToolchain: Provider<DefaultKotlinJavaToolchain> = objectFactory
         .propertyWithNewInstance({ this })
 
     final override val kotlinJavaToolchainProvider: Provider<KotlinJavaToolchain> = defaultKotlinJavaToolchain.cast()
 
     @get:Internal
-    override val compilerRunner: Provider<GradleCompilerRunner> = objects.propertyWithConvention(
+    override val compilerRunner: Provider<GradleCompilerRunner> = objectFactory.propertyWithConvention(
         // From Gradle 6.6 better to replace flatMap with provider.zip()
         defaultKotlinJavaToolchain.flatMap { toolchain ->
-            objects.property(gradleCompileTaskProvider.map {
+            objectFactory.property(gradleCompileTaskProvider.map {
                 GradleCompilerRunnerWithWorkers(
                     it,
                     toolchain.currentJvmJdkToolsJar.orNull,
@@ -762,17 +821,13 @@ abstract class KotlinCompile @Inject constructor(
         KotlinJvmCompilerArgumentsContributor(KotlinJvmCompilerArgumentsProvider(this))
     }
 
-    override fun getSourceRoots(): SourceRoots.ForJvm = jvmSourceRoots
-
     override fun callCompilerAsync(
         args: K2JVMCompilerArguments,
-        sourceRoots: SourceRoots,
+        kotlinSources: Set<File>,
         inputChanges: InputChanges,
         taskOutputsBackup: TaskOutputsBackup?
     ) {
-        sourceRoots as SourceRoots.ForJvm
-
-        validateKotlinAndJavaHasSameTargetCompatibility(args, sourceRoots)
+        validateKotlinAndJavaHasSameTargetCompatibility(args, kotlinSources)
 
         val messageCollector = GradlePrintingMessageCollector(logger, args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
@@ -791,7 +846,7 @@ abstract class KotlinCompile @Inject constructor(
             )
         } else null
 
-        @Suppress("ConvertArgumentToSet")
+        @Suppress("ConvertArgumentToSet", "DEPRECATION")
         val environment = GradleCompilerEnvironment(
             defaultCompilerClasspath, messageCollector, outputItemCollector,
             // In the incremental compiler, outputFiles will be cleaned on rebuild. However, because classpathSnapshotDir is not included in
@@ -803,10 +858,12 @@ abstract class KotlinCompile @Inject constructor(
             incrementalCompilationEnvironment = icEnv,
             kotlinScriptExtensions = sourceFilesExtensions.get().toTypedArray()
         )
+        logger.info("Kotlin source files: ${kotlinSources.joinToString()}")
+        logger.info("Java source files: ${javaSources.files.joinToString()}")
         compilerRunner.runJvmCompilerAsync(
-            sourceRoots.kotlinSourceFiles.files.toList(),
+            kotlinSources.toList(),
             commonSourceSet.toList(),
-            sourceRoots.javaSourceRoots,
+            javaSources.files, // we need here only directories where Java sources are located
             javaPackagePrefix,
             args,
             environment,
@@ -815,8 +872,12 @@ abstract class KotlinCompile @Inject constructor(
         )
     }
 
-    private fun validateKotlinAndJavaHasSameTargetCompatibility(args: K2JVMCompilerArguments, sourceRoots: SourceRoots.ForJvm) {
-        val mixedSourcesArePresent = !associatedJavaCompileTaskSources.isEmpty && !sourceRoots.kotlinSourceFiles.isEmpty
+    private fun validateKotlinAndJavaHasSameTargetCompatibility(
+        args: K2JVMCompilerArguments,
+        kotlinSources: Set<File>
+    ) {
+        val mixedSourcesArePresent = !associatedJavaCompileTaskSources.isEmpty &&
+                kotlinSources.isNotEmpty()
         if (mixedSourcesArePresent) {
             associatedJavaCompileTaskTargetCompatibility.orNull?.let { targetCompatibility ->
                 val normalizedJavaTarget = when (targetCompatibility) {
@@ -854,7 +915,7 @@ abstract class KotlinCompile @Inject constructor(
                 if (it is AbstractCompile &&
                     it !is JavaCompile &&
                     it !is AbstractKotlinCompile<*> &&
-                    javaOutputDir.get().asFile.isParentOf(it.destinationDir)
+                    javaOutputDir.get().asFile.isParentOf(it.destinationDirectory.get().asFile)
                 ) {
                     illegalTaskOrNull = illegalTaskOrNull ?: it
                 }
@@ -863,7 +924,7 @@ abstract class KotlinCompile @Inject constructor(
                 val illegalTask = illegalTaskOrNull!!
                 logger.info(
                     "Kotlin inter-project IC is disabled: " +
-                            "unknown task '$illegalTask' destination dir ${illegalTask.destinationDir} " +
+                            "unknown task '$illegalTask' destination dir ${illegalTask.destinationDirectory.get().asFile} " +
                             "intersects with java destination dir $javaOutputDir"
                 )
             }
@@ -871,15 +932,34 @@ abstract class KotlinCompile @Inject constructor(
         }
     }
 
-    // override setSource to track source directory sets and files (for generated android folders)
+    private val javaSourceFiles = objectFactory.fileCollection()
+
+    private fun javaFilesPatternFilter(patternFilterable: PatternFilterable) {
+        patternFilterable.include(
+            "java".fileExtensionCasePermutations().map { "**/*.$it" }
+        )
+    }
+
+    @get:Incremental
+    @get:InputFiles
+    @get:IgnoreEmptyDirectories
+    @get:PathSensitive(PathSensitivity.RELATIVE)
+    open val javaSources: FileCollection = objectFactory.fileCollection()
+        .from(
+            javaSourceFiles
+                .asFileTree
+                .matching(::javaFilesPatternFilter)
+        )
+
+    // override setSource to track Java sources as well
     override fun setSource(source: Any) {
-        sourceRootsContainer.set(source)
+        javaSourceFiles.from(source)
         super.setSource(source)
     }
 
-    // override source to track source directory sets and files (for generated android folders)
+    // override source to track Java sources as well
     override fun setSource(vararg source: Any) {
-        sourceRootsContainer.add(*source)
+        javaSourceFiles.from(*source)
         super.setSource(*source)
     }
 
@@ -913,7 +993,8 @@ abstract class Kotlin2JsCompile @Inject constructor(
     override val kotlinOptions: KotlinJsOptions,
     objectFactory: ObjectFactory,
     workerExecutor: WorkerExecutor
-) : AbstractKotlinCompile<K2JSCompilerArguments>(), KotlinJsCompile {
+) : AbstractKotlinCompile<K2JSCompilerArguments>(objectFactory),
+    KotlinJsCompile {
 
     init {
         incremental = true
@@ -997,7 +1078,7 @@ abstract class Kotlin2JsCompile @Inject constructor(
     abstract val optionalOutputFile: RegularFileProperty
 
     override val compilerRunner: Provider<GradleCompilerRunner> =
-        objects.propertyWithConvention(
+        objectFactory.propertyWithConvention(
             gradleCompileTaskProvider.map {
                 GradleCompilerRunnerWithWorkers(
                     it,
@@ -1031,8 +1112,6 @@ abstract class Kotlin2JsCompile @Inject constructor(
         (kotlinOptions as KotlinJsOptionsImpl).updateArguments(args)
     }
 
-    override fun getSourceRoots() = SourceRoots.KotlinOnly.create(sources, sourceFilesExtensions.get())
-
     @get:InputFiles
     @get:IgnoreEmptyDirectories
     @get:Incremental
@@ -1121,14 +1200,11 @@ abstract class Kotlin2JsCompile @Inject constructor(
 
     override fun callCompilerAsync(
         args: K2JSCompilerArguments,
-        sourceRoots: SourceRoots,
+        kotlinSources: Set<File>,
         inputChanges: InputChanges,
         taskOutputsBackup: TaskOutputsBackup?
     ) {
-        sourceRoots as SourceRoots.KotlinOnly
-
         logger.debug("Calling compiler")
-        //destinationDir.mkdirs()
 
         if (kotlinOptions.isIrBackendEnabled()) {
             logger.info(USING_JS_IR_BACKEND_MESSAGE)
@@ -1174,7 +1250,7 @@ abstract class Kotlin2JsCompile @Inject constructor(
         )
         processArgs(args)
         compilerRunner.runJsCompilerAsync(
-            sourceRoots.kotlinSourceFiles.files.toList(),
+            kotlinSources.toList(),
             commonSourceSet.toList(),
             args,
             environment,

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

@@ -18,6 +18,32 @@ internal fun File.isJavaFile() =
 internal fun File.isKotlinFile(sourceFilesExtensions: List<String>): Boolean =
     !isJavaFile() && sourceFilesExtensions.any { it.equals(extension, ignoreCase = true) }
 
+/**
+ * Create all possible case-sensitive permutations for given [String].
+ *
+ * Useful to create for [org.gradle.api.tasks.util.PatternFilterable] Ant-style patterns.
+ */
+@OptIn(ExperimentalStdlibApi::class)
+internal fun String.fileExtensionCasePermutations(): List<String> {
+    val lowercaseInput = lowercase()
+    val length = lowercaseInput.length
+    // number of permutations is 2^n
+    val max = 1 shl length
+    val result = mutableListOf<String>()
+    var combination: CharArray
+    for (i in 0 until max) {
+        combination = lowercaseInput.toCharArray()
+        for (j in 0 until length) {
+            // If j-th bit is set, we convert it to upper case
+            if (((i shr j) and 1) == 1) {
+                combination[j] = combination[j].uppercaseChar()
+            }
+        }
+        result.add(String(combination))
+    }
+    return result
+}
+
 internal fun File.relativeOrCanonical(base: File): String =
     relativeToOrNull(base)?.path ?: canonicalPath