Fix of ConvertJavaInterfaceToClass test

Platform is trying to modify the class inheritance list during intension (see the test name above) action process but it cause a cross-language changes via PSI.
To make this possible LightClasses are supports this behaviour with a little support of it (inheritance list Add and inheritance list element Delete are supported).
It need's to be done for UL-classes in same way.

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KotlinSuperTypeListBuilder.kt

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.asJava.classes
+
+import com.intellij.lang.Language
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiJavaCodeReferenceElement
+import com.intellij.psi.PsiManager
+import com.intellij.psi.PsiReferenceList
+import org.jetbrains.kotlin.psi.KtSuperTypeList
+import org.jetbrains.kotlin.psi.psiUtil.getElementTextWithContext
+
+class KotlinSuperTypeListBuilder(kotlinOrigin: KtSuperTypeList?, manager: PsiManager, language: Language, role: PsiReferenceList.Role) :
+    KotlinLightReferenceListBuilder(
+        manager,
+        language,
+        role
+    ) {
+
+    private val myKotlinOrigin: KtSuperTypeList? = kotlinOrigin
+
+    inner class KotlinSuperTypeReference(private val element: PsiJavaCodeReferenceElement) : PsiJavaCodeReferenceElement by element {
+
+        override fun getParent() = this@KotlinSuperTypeListBuilder
+
+        val kotlinOrigin by lazyPub {
+            element.qualifiedName?.let { this@KotlinSuperTypeListBuilder.myKotlinOrigin?.findEntry(it) }
+        }
+
+        override fun delete() {
+            val superTypeList = this@KotlinSuperTypeListBuilder.myKotlinOrigin ?: return
+            val entry = kotlinOrigin ?: return
+            superTypeList.removeEntry(entry)
+        }
+    }
+
+    private val referenceElementsCache by lazyPub {
+        super.getReferenceElements().map { KotlinSuperTypeReference(it) }.toTypedArray()
+    }
+
+    override fun getReferenceElements() = referenceElementsCache
+
+    override fun add(element: PsiElement): PsiElement {
+
+        if (element !is KotlinSuperTypeReference) throw UnsupportedOperationException("Unexpected element: ${element.getElementTextWithContext()}")
+
+        val superTypeList = myKotlinOrigin ?: return element
+        val entry = element.kotlinOrigin ?: return element
+
+        this.addSuperTypeEntry(superTypeList, entry, element)
+
+        return element
+    }
+}

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/implUtils.kt

@@ -1,27 +1,52 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.asJava.classes
 
+import com.intellij.psi.PsiJavaCodeReferenceElement
+import com.intellij.psi.PsiReferenceList
 import com.intellij.psi.impl.light.LightElement
 import com.intellij.util.IncorrectOperationException
+import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtPsiFactory
+import org.jetbrains.kotlin.psi.KtSuperTypeList
+import org.jetbrains.kotlin.psi.KtSuperTypeListEntry
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
 
 // NOTE: avoid using blocking lazy in light classes, it leads to deadlocks
 fun <T> lazyPub(initializer: () -> T) = lazy(LazyThreadSafetyMode.PUBLICATION, initializer)
 
 fun LightElement.cannotModify(): Nothing {
     throw IncorrectOperationException("Modification not implemented.")
+}
+
+fun KtSuperTypeList.findEntry(fqNameToFind: String): KtSuperTypeListEntry? {
+    val context = LightClassGenerationSupport.getInstance(project).analyzeWithContent(parent as KtClassOrObject)
+    return entries.firstOrNull {
+        val referencedType = context[BindingContext.TYPE, it.typeReference]
+        referencedType?.constructor?.declarationDescriptor?.fqNameUnsafe?.asString() == fqNameToFind
+    }
+}
+
+fun PsiReferenceList.addSuperTypeEntry(
+    superTypeList: KtSuperTypeList,
+    entry: KtSuperTypeListEntry,
+    reference: PsiJavaCodeReferenceElement
+) {
+    // Only classes may be mentioned in 'extends' list, thus create super call instead simple type reference
+    val entryToAdd =
+        if ((reference.parent as? PsiReferenceList)?.role == PsiReferenceList.Role.IMPLEMENTS_LIST && role == PsiReferenceList.Role.EXTENDS_LIST) {
+            KtPsiFactory(this).createSuperTypeCallEntry("${entry.text}()")
+        } else entry
+    // TODO: implement KtSuperListEntry qualification/shortening when inserting reference from another context
+    if (entry.parent != superTypeList) {
+        superTypeList.addEntry(entryToAdd)
+    } else {
+        // Preserve original entry order
+        entry.replace(entryToAdd)
+    }
 }

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightClass.kt

@@ -83,7 +83,8 @@ open class KtUltraLightClass(classOrObject: KtClassOrObject, internal val suppor
 
     override fun createExtendsList(): PsiReferenceList? =
         if (tooComplex) super.createExtendsList()
-        else KotlinLightReferenceListBuilder(
+        else KotlinSuperTypeListBuilder(
+            kotlinOrigin.getSuperTypeList(),
             manager,
             language,
             PsiReferenceList.Role.EXTENDS_LIST
@@ -109,7 +110,8 @@ open class KtUltraLightClass(classOrObject: KtClassOrObject, internal val suppor
 
     override fun createImplementsList(): PsiReferenceList? =
         if (tooComplex) super.createImplementsList()
-        else KotlinLightReferenceListBuilder(
+        else KotlinSuperTypeListBuilder(
+            kotlinOrigin.getSuperTypeList(),
             manager,
             language,
             PsiReferenceList.Role.IMPLEMENTS_LIST

compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/KtLightPsiReferenceList.kt

@@ -23,31 +23,24 @@ import com.intellij.psi.PsiReferenceList
 import com.intellij.psi.PsiReferenceList.Role
 import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
 import org.jetbrains.kotlin.asJava.classes.KtLightClass
+import org.jetbrains.kotlin.asJava.classes.addSuperTypeEntry
+import org.jetbrains.kotlin.asJava.classes.findEntry
 import org.jetbrains.kotlin.asJava.classes.lazyPub
-import org.jetbrains.kotlin.psi.KtClassOrObject
-import org.jetbrains.kotlin.psi.KtPsiFactory
-import org.jetbrains.kotlin.psi.KtSuperTypeList
-import org.jetbrains.kotlin.psi.KtSuperTypeListEntry
+import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getElementTextWithContext
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
 
-class KtLightPsiReferenceList (
-        override val clsDelegate: PsiReferenceList,
-        private val owner: KtLightClass
+class KtLightPsiReferenceList(
+    override val clsDelegate: PsiReferenceList,
+    private val owner: KtLightClass
 ) : KtLightElement<KtSuperTypeList, PsiReferenceList>, PsiReferenceList by clsDelegate {
     inner class KtLightSuperTypeReference(
-            override val clsDelegate: PsiJavaCodeReferenceElement
+        override val clsDelegate: PsiJavaCodeReferenceElement
     ) : KtLightElement<KtSuperTypeListEntry, PsiJavaCodeReferenceElement>, PsiJavaCodeReferenceElement by clsDelegate {
 
         override val kotlinOrigin by lazyPub {
-            val superTypeList = this@KtLightPsiReferenceList.kotlinOrigin ?: return@lazyPub null
-            val fqNameToFind = clsDelegate.qualifiedName ?: return@lazyPub null
-            val context = LightClassGenerationSupport.getInstance(project).analyzeWithContent(superTypeList.parent as KtClassOrObject)
-            superTypeList.entries.firstOrNull {
-                val referencedType = context[BindingContext.TYPE, it.typeReference]
-                referencedType?.constructor?.declarationDescriptor?.fqNameUnsafe?.asString() == fqNameToFind
-            }
+            clsDelegate.qualifiedName?.let { this@KtLightPsiReferenceList.kotlinOrigin?.findEntry(it) }
         }
 
         override fun getParent() = this@KtLightPsiReferenceList
@@ -77,19 +70,9 @@ class KtLightPsiReferenceList (
 
         val superTypeList = kotlinOrigin ?: return element
         val entry = element.kotlinOrigin ?: return element
-        // Only classes may be mentioned in 'extends' list, thus create super call instead simple type reference
-        val entryToAdd = if ((element.parent as? PsiReferenceList)?.role == Role.IMPLEMENTS_LIST && role == Role.EXTENDS_LIST) {
-            KtPsiFactory(this).createSuperTypeCallEntry("${entry.text}()")
-        }
-        else entry
-        // TODO: implement KtSuperListEntry qualification/shortening when inserting reference from another context
-        if (entry.parent != superTypeList) {
-            superTypeList.addEntry(entryToAdd)
-        }
-        else {
-            // Preserve original entry order
-            entry.replace(entryToAdd)
-        }
+
+        this.addSuperTypeEntry(superTypeList, entry, element)
+
         return element
     }
 }

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixMultiFileTestGenerated.java

@@ -1395,7 +1395,6 @@ public class QuickFixMultiFileTestGenerated extends AbstractQuickFixMultiFileTes
         }
 
         @TestMetadata("kotlinInheritor.before.Main.java")
-        @Ignore("UltraLight classes does not support modification yet")
         public void testKotlinInheritor() throws Exception {
             runTest("idea/testData/quickfix/convertJavaInterfaceToClass/kotlinInheritor.before.Main.java");
         }