Has actual marker: distinguish Android and JVM modules #KT-25055 Fixed

idea/src/org/jetbrains/kotlin/idea/highlighter/markers/HasActualMarker.kt

@@ -19,6 +19,10 @@ package org.jetbrains.kotlin.idea.highlighter.markers
 import com.intellij.codeInsight.daemon.impl.PsiElementListNavigator
 import com.intellij.ide.util.DefaultPsiElementCellRenderer
 import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.analyzer.ModuleInfo
+import org.jetbrains.kotlin.descriptors.ModuleDescriptor
+import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
+import org.jetbrains.kotlin.idea.core.isAndroidModule
 import org.jetbrains.kotlin.idea.core.toDescriptor
 import org.jetbrains.kotlin.idea.util.actualsForExpected
 import org.jetbrains.kotlin.psi.KtDeclaration
@@ -27,25 +31,36 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.getMultiTargetPlatform
 import java.awt.event.MouseEvent
 
+private fun ModuleDescriptor?.getMultiTargetPlatformName(): String? {
+    if (this == null) return null
+    val moduleInfo = getCapability(ModuleInfo.Capability) as? ModuleSourceInfo
+    if (moduleInfo != null && moduleInfo.module.isAndroidModule()) {
+        return "Android"
+    }
+    val platform = getMultiTargetPlatform() ?: return null
+    return when (platform) {
+        is MultiTargetPlatform.Specific ->
+            platform.platform
+        MultiTargetPlatform.Common ->
+            "common"
+    }
+}
+
 fun getPlatformActualTooltip(declaration: KtDeclaration): String? {
     val actualDeclarations = declaration.actualsForExpected()
     if (actualDeclarations.isEmpty()) return null
 
     return actualDeclarations.asSequence()
         .mapNotNull { it.toDescriptor()?.module }
-        .groupBy { it.getMultiTargetPlatform() }
+        .groupBy { it.getMultiTargetPlatformName() }
         .filter { (platform, _) -> platform != null }
         .entries
         .joinToString(prefix = "Has actuals in ") { (platform, modules) ->
             val modulesSuffix = if (modules.size <= 1) "" else " (${modules.size} modules)"
-            when (platform) {
-                is MultiTargetPlatform.Specific ->
-                    "${platform.platform}$modulesSuffix"
-                MultiTargetPlatform.Common ->
-                    "common$modulesSuffix"
-                null ->
-                    throw AssertionError("Platform should not be null")
+            if (platform == null) {
+                throw AssertionError("Platform should not be null")
             }
+            platform + modulesSuffix
         }
 }