Adjust J2K to latest protected visibility fixes

j2k/src/org/jetbrains/kotlin/j2k/Converter.kt

@@ -19,8 +19,10 @@ package org.jetbrains.kotlin.j2k
 import com.intellij.openapi.project.Project
 import com.intellij.psi.*
 import com.intellij.psi.CommonClassNames.*
+import com.intellij.psi.util.InheritanceUtil
 import com.intellij.psi.util.PsiMethodUtil
 import com.intellij.psi.util.PsiTreeUtil
+import com.intellij.psi.util.PsiUtil
 import org.jetbrains.kotlin.j2k.ast.*
 import org.jetbrains.kotlin.j2k.ast.Annotation
 import org.jetbrains.kotlin.j2k.ast.Enum
@@ -29,6 +31,7 @@ import org.jetbrains.kotlin.j2k.usageProcessing.FieldToPropertyProcessing
 import org.jetbrains.kotlin.j2k.usageProcessing.UsageProcessing
 import org.jetbrains.kotlin.j2k.usageProcessing.UsageProcessingExpressionConverter
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
 import org.jetbrains.kotlin.types.expressions.OperatorConventions.*
 import org.jetbrains.kotlin.utils.addToStdlib.singletonOrEmptyList
 import java.util.*
@@ -714,28 +717,34 @@ class Converter private constructor(
         val originalClass = member.containingClass ?: return this
         // Search for usages only in Java because java-protected member cannot be used in Kotlin from same package
         val usages = referenceSearcher.findUsagesForExternalCodeProcessing(member, true, false)
-        for (usage in usages) {
-            val element = usage.element
 
-            var allowProtected = false
-            var parent: PsiElement? = element
-            while (parent != null) {
-                if (parent is PsiClass && allowProtected(parent, originalClass)) {
-                    allowProtected = true
-                    break
-                }
-                parent = parent.parent
-            }
-
-            if (!allowProtected) {
-                return without(Modifier.PROTECTED).with(Modifier.PUBLIC)
-            }
-        }
-        return this
+        return if (usages.any { !allowProtected(it.element, member, originalClass) })
+            without(Modifier.PROTECTED).with(Modifier.PUBLIC)
+        else this
     }
 
-    private fun allowProtected(containingClass: PsiClass, originalClass: PsiClass): Boolean {
-        return originalClass == containingClass || containingClass.isInheritor(originalClass, true)
+    private fun allowProtected(element: PsiElement, member: PsiMember, originalClass: PsiClass): Boolean {
+        if (element.parent is PsiNewExpression && member is PsiMethod && member.isConstructor) {
+            // calls to for protected constructors are allowed only within same class or as super calls
+            return element.parentsWithSelf.contains(originalClass)
+        }
+
+        return element.parentsWithSelf.filterIsInstance<PsiClass>().any { accessContainingClass ->
+            if (!InheritanceUtil.isInheritorOrSelf(accessContainingClass, originalClass, true)) return@any false
+
+            if (element !is PsiReferenceExpression) return@any true
+
+            val qualifierExpression = element.qualifierExpression ?: return@any true
+
+            // super.foo is allowed if 'foo' is protected
+            if (qualifierExpression is PsiSuperExpression) return@any true
+
+            val receiverType = qualifierExpression.type ?: return@any true
+            val resolvedClass = PsiUtil.resolveGenericsClassInType(receiverType).element ?: return@any true
+
+            // receiver type should be subtype of containing class
+            InheritanceUtil.isInheritorOrSelf(resolvedClass, accessContainingClass, true)
+        }
     }
 
     fun convertAnonymousClassBody(anonymousClass: PsiAnonymousClass): AnonymousClassBody {

j2k/testData/fileOrElement/detectProperties/DifferentFieldNameAndSuperClass.kt

@@ -1,6 +1,5 @@
 open class Base internal constructor(x: Int) {
     var x = 42
-        protected set
 
     init {
         this.x = x

j2k/testData/fileOrElement/protected/inheritorsSamePackage.java

@@ -5,10 +5,14 @@ public class BaseInheritorSamePackage {
 
     }
 
-    protected void foo() {
+    protected BaseInheritorSamePackage(int x) {
 
     }
 
+    protected void foo() {
+        new BaseInheritorSamePackage(1);
+    }
+
     protected int i = 1;
 }
 

j2k/testData/fileOrElement/protected/inheritorsSamePackage.kt

@@ -1,12 +1,19 @@
 package test
 
-open class BaseInheritorSamePackage protected constructor() {
-
-    protected fun foo() {
+open class BaseInheritorSamePackage {
+    constructor() {
 
     }
 
-    protected var i = 1
+    protected constructor(x: Int) {
+
+    }
+
+    fun foo() {
+        BaseInheritorSamePackage(1)
+    }
+
+    var i = 1
 }
 
 internal class DerivedInheritorSamePackage : BaseInheritorSamePackage() {

j2k/testData/multiFile/ProtectedVisibility/InheritorOtherPackage2.java

@@ -3,9 +3,9 @@ package test2;
 import test.*;
 
 public class DerivedOtherPackage extends BaseOtherPackage {
-    public void usage1() {
-        BaseOtherPackage base = new BaseOtherPackage();
-        base.foo();
-        int i = base.i;
+    protected DerivedOtherPackage() {
+        super();
+        foo();
+        int i = this.i;
     }
 }

j2k/testData/multiFile/ProtectedVisibility/InheritorOtherPackage2.kt

@@ -2,10 +2,9 @@ package test2
 
 import test.*
 
-class DerivedOtherPackage : BaseOtherPackage() {
-    fun usage1() {
-        val base = BaseOtherPackage()
-        base.foo()
-        val i = base.i
+class DerivedOtherPackage protected constructor() : BaseOtherPackage() {
+    init {
+        foo()
+        val i = this.i
     }
 }

j2k/testData/multiFile/ProtectedVisibility/external/KotlinFile.kt

@@ -3,9 +3,8 @@ package test3
 import test.*
 
 class DerivedOtherPackageKotlin : BaseOtherPackage() {
-    fun usage1() {
-        val base = BaseOtherPackage()
-        base.foo()
-        val i = base.i
+    init {
+        foo()
+        val i = this.i
     }
 }

j2k/testData/multiFile/ProtectedVisibility/external/KotlinFile.kt.expected

@@ -3,9 +3,8 @@ package test3
 import test.*
 
 class DerivedOtherPackageKotlin : BaseOtherPackage() {
-    fun usage1() {
-        val base = BaseOtherPackage()
-        base.foo()
-        val i = base.i
+    init {
+        foo()
+        val i = this.i
     }
 }