MPP: Use new MPP model to find modules for 'expect'/'actual'

#KT-25955 Fixed

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/project/multiplatformUtil.kt

@@ -16,14 +16,24 @@ import com.intellij.psi.util.CachedValueProvider
 import org.jetbrains.kotlin.analyzer.ModuleInfo
 import org.jetbrains.kotlin.caches.resolve.KotlinCacheService
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
+import org.jetbrains.kotlin.idea.facet.KotlinFacet
 import org.jetbrains.kotlin.idea.facet.KotlinFacetType
 import org.jetbrains.kotlin.idea.facet.KotlinFacetType.Companion.ID
+import org.jetbrains.kotlin.idea.util.rootManager
 import org.jetbrains.kotlin.resolve.TargetPlatform
 
+internal val Module.isNewMPPModule: Boolean
+    get() = KotlinFacet.get(this)?.configuration?.settings?.kind?.isNewMPP ?: false
+
 val Module.implementingModules: List<Module>
     get() = cached(CachedValueProvider {
+        val moduleManager = ModuleManager.getInstance(project)
         CachedValueProvider.Result(
-            ModuleManager.getInstance(project).modules.filter { name in it.findImplementedModuleNames() },
+            if (isNewMPPModule) {
+                moduleManager.getModuleDependentModules(this)
+            } else {
+                moduleManager.modules.filter { name in it.findOldFashionedImplementedModuleNames() }
+            },
             ProjectRootModificationTracker.getInstance(project)
         )
     })
@@ -31,15 +41,19 @@ val Module.implementingModules: List<Module>
 val Module.implementedModules: List<Module>
     get() = cached<List<Module>>(
         CachedValueProvider {
-            val modelsProvider = IdeModelsProviderImpl(project)
             CachedValueProvider.Result(
-                findImplementedModuleNames().mapNotNull { modelsProvider.findIdeModule(it) },
+                if (isNewMPPModule) {
+                    rootManager.dependencies.toList()
+                } else {
+                    val modelsProvider = IdeModelsProviderImpl(project)
+                    findOldFashionedImplementedModuleNames().mapNotNull { modelsProvider.findIdeModule(it) }
+                },
                 ProjectRootModificationTracker.getInstance(project)
             )
         }
     )
 
-private fun Module.findImplementedModuleNames(): List<String> {
+private fun Module.findOldFashionedImplementedModuleNames(): List<String> {
     val facet = FacetManager.getInstance(this).findFacet(
         KotlinFacetType.TYPE_ID,
         FacetTypeRegistry.getInstance().findFacetType(ID)!!.defaultFacetName

idea/idea-jps-common/src/org/jetbrains/kotlin/config/KotlinFacetSettings.kt

@@ -115,7 +115,10 @@ var CommonCompilerArguments.apiVersionView: VersionView
 enum class KotlinModuleKind {
     DEFAULT,
     SOURCE_SET_HOLDER,
-    COMPILATION_AND_SOURCE_SET_HOLDER
+    COMPILATION_AND_SOURCE_SET_HOLDER;
+
+    val isNewMPP: Boolean
+        get() = this != DEFAULT
 }
 
 class KotlinFacetSettings {