Move: Account for implemented modules in internal access check

#KT-23590 Fixed

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/moveConflictUtils.kt

@@ -43,6 +43,7 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.impl.MutablePackageFragmentDescriptor
 import org.jetbrains.kotlin.idea.caches.project.getModuleInfoByVirtualFile
 import org.jetbrains.kotlin.idea.caches.project.forcedModuleInfo
+import org.jetbrains.kotlin.idea.caches.project.implementedModules
 import org.jetbrains.kotlin.idea.caches.resolve.*
 import org.jetbrains.kotlin.idea.caches.resolve.util.getJavaMemberDescriptor
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
@@ -483,8 +484,8 @@ class MoveConflictChecker(
         for (memberToCheck in membersToCheck) {
             for (reference in ReferencesSearch.search(memberToCheck)) {
                 val element = reference.element ?: continue
-                val usageModule = ModuleUtilCore.findModuleForPsiElement(element)
+                val usageModule = ModuleUtilCore.findModuleForPsiElement(element) ?: continue
-                if (usageModule != targetModule && !isToBeMoved(element)) {
+                if (usageModule != targetModule && targetModule !in usageModule.implementedModules && !isToBeMoved(element)) {
                     val container = element.getUsageContext()
                     val message = "${render(container)} uses internal ${render(memberToCheck)} which will be inaccessible after move"
                     conflicts.putValue(element, message.capitalize())

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/after/A/A.iml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="3" platform="Common (experimental) " useProjectSettings="false">
+        <compilerSettings />
+        <compilerArguments>
+          <option name="multiPlatform" value="true" />
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/after/A/src/Foo.kt

@@ -0,0 +1,3 @@
+open class Foo {
+    internal fun bar() = ""
+}

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/after/B/B.iml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module" module-name="A" scope="COMPILE" />
+  </component>
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="3" platform="JVM 1.8" useProjectSettings="false">
+        <implements>A</implements>
+        <compilerSettings />
+        <compilerArguments>
+          <option name="multiPlatform" value="true" />
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/after/B/src/test.kt

@@ -0,0 +1,3 @@
+class Bar : Foo() {
+    val x = bar()
+}

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/before/A/A.iml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="3" platform="Common (experimental) " useProjectSettings="false">
+        <compilerSettings />
+        <compilerArguments>
+          <option name="multiPlatform" value="true" />
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/before/B/B.iml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module" module-name="A" scope="COMPILE" />
+  </component>
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="3" platform="JVM 1.8" useProjectSettings="false">
+        <implements>A</implements>
+        <compilerSettings />
+        <compilerArguments>
+          <option name="multiPlatform" value="true" />
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/before/B/src/test.kt

@@ -0,0 +1,7 @@
+open class <caret>Foo {
+    internal fun bar() = ""
+}
+
+class Bar : Foo() {
+    val x = bar()
+}

idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/moveClassWithInternalMemberFromJvmToCommon.test

@@ -0,0 +1,7 @@
+{
+  "mainFile": "B/src/test.kt",
+  "type": "MOVE_KOTLIN_TOP_LEVEL_DECLARATIONS",
+  "targetPackage": "",
+  "targetSourceRoot": "A/src",
+  "withRuntime": "true"
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/move/MultiModuleMoveTestGenerated.java

@@ -29,6 +29,11 @@ public class MultiModuleMoveTestGenerated extends AbstractMultiModuleMoveTest {
         KotlinTestUtils.assertAllTestsPresentInSingleGeneratedClass(this.getClass(), new File("idea/testData/refactoring/moveMultiModule"), Pattern.compile("^(.+)\\.test$"), TargetBackend.ANY);
     }
 
+    @TestMetadata("moveClassWithInternalMemberFromJvmToCommon/moveClassWithInternalMemberFromJvmToCommon.test")
+    public void testMoveClassWithInternalMemberFromJvmToCommon_MoveClassWithInternalMemberFromJvmToCommon() throws Exception {
+        runTest("idea/testData/refactoring/moveMultiModule/moveClassWithInternalMemberFromJvmToCommon/moveClassWithInternalMemberFromJvmToCommon.test");
+    }
+
     @TestMetadata("moveDirectoryKeepPackageDirective/moveDirectoryKeepPackageDirective.test")
     public void testMoveDirectoryKeepPackageDirective_MoveDirectoryKeepPackageDirective() throws Exception {
         runTest("idea/testData/refactoring/moveMultiModule/moveDirectoryKeepPackageDirective/moveDirectoryKeepPackageDirective.test");