MPP: Retain KotlinSourceSetInfo for Android in data nodes

User data is not serialized which leads to broken import on reopening

 #KT-27213 Fixed

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/Freezable.kt

@@ -16,11 +16,12 @@
 
 package org.jetbrains.kotlin.cli.common.arguments
 
+import java.io.Serializable
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
 abstract class Freezable {
-    protected open inner class FreezableVar<T>(private var value: T) : ReadWriteProperty<Any, T> {
+    protected open inner class FreezableVar<T>(private var value: T) : ReadWriteProperty<Any, T>, Serializable {
         override fun getValue(thisRef: Any, property: KProperty<*>) = value
 
         override fun setValue(thisRef: Any, property: KProperty<*>, value: T) {

idea/idea-android/src/org/jetbrains/kotlin/android/configure/KotlinAndroidMPPGradleProjectResolver.kt

@@ -20,8 +20,8 @@ import org.gradle.tooling.model.idea.IdeaModule
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModel
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModelBuilder
 import org.jetbrains.kotlin.gradle.KotlinPlatform
+import org.jetbrains.kotlin.idea.configuration.KotlinAndroidSourceSetData
 import org.jetbrains.kotlin.idea.configuration.KotlinMPPGradleProjectResolver
-import org.jetbrains.kotlin.idea.configuration.kotlinAndroidSourceSets
 import org.jetbrains.kotlin.idea.configuration.kotlinSourceSet
 import org.jetbrains.plugins.gradle.model.data.GradleSourceSetData
 import org.jetbrains.plugins.gradle.service.project.AbstractProjectResolverExtension
@@ -81,12 +81,13 @@ class KotlinAndroidMPPGradleProjectResolver : AbstractProjectResolverExtension()
 
         val mppModel = resolverCtx.getExtraProject(gradleModule, KotlinMPPGradleModel::class.java) ?: return
 
-        mainModuleData.kotlinAndroidSourceSets = mppModel
+        val androidSourceSets = mppModel
             .targets
             .asSequence()
             .flatMap { it.compilations.asSequence() }
             .filter { it.platform == KotlinPlatform.ANDROID }
             .map { KotlinMPPGradleProjectResolver.createSourceSetInfo(it, gradleModule, resolverCtx) }
             .toList()
+        mainModuleData.createChild(KotlinAndroidSourceSetData.KEY, KotlinAndroidSourceSetData(androidSourceSets))
     }
 }

idea/idea-android/src/org/jetbrains/kotlin/android/configure/KotlinAndroidMPPGradleProjectResolver.kt.173

@@ -20,8 +20,8 @@ import org.gradle.tooling.model.idea.IdeaModule
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModel
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModelBuilder
 import org.jetbrains.kotlin.gradle.KotlinPlatform
+import org.jetbrains.kotlin.idea.configuration.KotlinAndroidSourceSetData
 import org.jetbrains.kotlin.idea.configuration.KotlinMPPGradleProjectResolver
-import org.jetbrains.kotlin.idea.configuration.kotlinAndroidSourceSets
 import org.jetbrains.kotlin.idea.configuration.kotlinSourceSet
 import org.jetbrains.plugins.gradle.model.data.GradleSourceSetData
 import org.jetbrains.plugins.gradle.service.project.AbstractProjectResolverExtension
@@ -81,12 +81,13 @@ class KotlinAndroidMPPGradleProjectResolver : AbstractProjectResolverExtension()
 
         val mppModel = resolverCtx.getExtraProject(gradleModule, KotlinMPPGradleModel::class.java) ?: return
 
-        mainModuleData.kotlinAndroidSourceSets = mppModel
+        val androidSourceSets = mppModel
             .targets
             .asSequence()
             .flatMap { it.compilations.asSequence() }
             .filter { it.platform == KotlinPlatform.ANDROID }
             .map { KotlinMPPGradleProjectResolver.createSourceSetInfo(it, gradleModule, resolverCtx) }
             .toList()
+        mainModuleData.createChild(KotlinAndroidSourceSetData.KEY, KotlinAndroidSourceSetData(androidSourceSets))
     }
 }

idea/idea-android/src/org/jetbrains/kotlin/android/configure/KotlinAndroidMPPGradleProjectResolver.kt.as31

@@ -20,8 +20,8 @@ import org.gradle.tooling.model.idea.IdeaModule
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModel
 import org.jetbrains.kotlin.gradle.KotlinMPPGradleModelBuilder
 import org.jetbrains.kotlin.gradle.KotlinPlatform
+import org.jetbrains.kotlin.idea.configuration.KotlinAndroidSourceSetData
 import org.jetbrains.kotlin.idea.configuration.KotlinMPPGradleProjectResolver
-import org.jetbrains.kotlin.idea.configuration.kotlinAndroidSourceSets
 import org.jetbrains.kotlin.idea.configuration.kotlinSourceSet
 import org.jetbrains.plugins.gradle.model.data.GradleSourceSetData
 import org.jetbrains.plugins.gradle.service.project.AbstractProjectResolverExtension
@@ -81,12 +81,13 @@ class KotlinAndroidMPPGradleProjectResolver : AbstractProjectResolverExtension()
 
         val mppModel = resolverCtx.getExtraProject(gradleModule, KotlinMPPGradleModel::class.java) ?: return
 
-        mainModuleData.kotlinAndroidSourceSets = mppModel
+        val androidSourceSets = mppModel
             .targets
             .asSequence()
             .flatMap { it.compilations.asSequence() }
             .filter { it.platform == KotlinPlatform.ANDROID }
             .map { KotlinMPPGradleProjectResolver.createSourceSetInfo(it, gradleModule, resolverCtx) }
             .toList()
+        mainModuleData.createChild(KotlinAndroidSourceSetData.KEY, KotlinAndroidSourceSetData(androidSourceSets))
     }
 }

idea/idea-gradle/src/org/jetbrains/kotlin/idea/configuration/KotlinMPPDataNodes.kt

@@ -7,8 +7,10 @@ package org.jetbrains.kotlin.idea.configuration
 
 import com.intellij.openapi.externalSystem.model.DataNode
 import com.intellij.openapi.externalSystem.model.ProjectKeys
+import com.intellij.openapi.externalSystem.model.project.AbstractExternalEntityData
 import com.intellij.openapi.externalSystem.model.project.AbstractNamedData
 import com.intellij.openapi.externalSystem.model.project.ModuleData
+import com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil
 import com.intellij.openapi.util.Key
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
 import org.jetbrains.kotlin.gradle.KotlinModule
@@ -16,6 +18,7 @@ import org.jetbrains.kotlin.gradle.KotlinPlatform
 import org.jetbrains.kotlin.idea.util.CopyableDataNodeUserDataProperty
 import org.jetbrains.plugins.gradle.util.GradleConstants
 import java.io.File
+import java.io.Serializable
 import com.intellij.openapi.externalSystem.model.Key as ExternalKey
 
 var DataNode<out ModuleData>.kotlinSourceSet: KotlinSourceSetInfo?
@@ -24,10 +27,10 @@ var DataNode<out ModuleData>.kotlinSourceSet: KotlinSourceSetInfo?
 var DataNode<out ModuleData>.kotlinTargetDataNode: DataNode<KotlinTargetData>?
         by CopyableDataNodeUserDataProperty(Key.create("KOTLIN_TARGET_DATA_NODE"))
 
-var DataNode<ModuleData>.kotlinAndroidSourceSets: List<KotlinSourceSetInfo>?
+val DataNode<ModuleData>.kotlinAndroidSourceSets: List<KotlinSourceSetInfo>?
-        by CopyableDataNodeUserDataProperty(Key.create("ANDROID_COMPILATIONS"))
+        get() = ExternalSystemApiUtil.getChildren(this, KotlinAndroidSourceSetData.KEY).firstOrNull()?.data?.sourceSetInfos
 
-class KotlinSourceSetInfo(val kotlinModule: KotlinModule) {
+class KotlinSourceSetInfo(val kotlinModule: KotlinModule) : Serializable {
     var moduleId: String? = null
     var gradleModuleId: String = ""
     var platform: KotlinPlatform = KotlinPlatform.COMMON
@@ -38,6 +41,14 @@ class KotlinSourceSetInfo(val kotlinModule: KotlinModule) {
     var sourceSetIdsByName: MutableMap<String, String> = LinkedHashMap()
 }
 
+class KotlinAndroidSourceSetData(
+    val sourceSetInfos: List<KotlinSourceSetInfo>
+) : AbstractExternalEntityData(GradleConstants.SYSTEM_ID) {
+    companion object {
+        val KEY = ExternalKey.create(KotlinAndroidSourceSetData::class.java, KotlinTargetData.KEY.processingWeight + 1)
+    }
+}
+
 class KotlinTargetData(name: String) : AbstractNamedData(GradleConstants.SYSTEM_ID, name) {
     var moduleIds: Set<String> = emptySet()
     var archiveFile: File? = null