FIR IDE: implement super qualifier completion

idea/idea-completion/testData/basic/common/super/QualifierType1.kt

@@ -1,3 +1,4 @@
+// FIR_COMPARISON
 open class Base
 
 open class A : Base

idea/idea-completion/testData/basic/common/super/QualifierType2.kt

@@ -1,3 +1,4 @@
+// FIR_COMPARISON
 open class A
 
 interface I

idea/idea-completion/testData/basic/common/super/QualifierType3.kt

@@ -1,3 +1,4 @@
+// FIR_COMPARISON
 open class AA
 
 interface AI

idea/idea-completion/testData/keywords/AfterIf.fir.kt

@@ -0,0 +1,33 @@
+// FIR_COMPARISON
+fun some() {
+
+    if (true) {
+
+    } else {
+
+    }
+
+    <caret>
+}
+
+
+// EXIST: do
+// EXIST: class
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: interface
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: typealias
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/AfterIf.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun some() {
 

idea/idea-completion/testData/keywords/AfterTryCatch.fir.kt

@@ -0,0 +1,33 @@
+// FIR_COMPARISON
+fun foo() {
+    try {
+
+    }
+    catch(e: Exception) {
+
+    }
+    <caret>
+}
+
+// EXIST: catch
+// EXIST: finally
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST: as
+// EXIST:  typealias
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/AfterTryCatch.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo() {
     try {

idea/idea-completion/testData/keywords/AfterTryFinally.fir.kt

@@ -0,0 +1,30 @@
+// FIR_COMPARISON
+fun foo() {
+    try {
+
+    }
+    finally {
+
+    }
+    <caret>
+}
+
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST:  typealias
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/AfterTryFinally.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo() {
     try {

idea/idea-completion/testData/keywords/Else1.fir.kt

@@ -0,0 +1,29 @@
+// FIR_COMPARISON
+fun foo(p: Int) {
+    if (p > 0) {
+
+    }
+    <caret>
+}
+
+// EXIST: else
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST: typealias
+// EXIST: as
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/Else1.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo(p: Int) {
     if (p > 0) {

idea/idea-completion/testData/keywords/Else2.fir.kt

@@ -0,0 +1,28 @@
+// FIR_COMPARISON
+fun foo(p: Int) {
+    if (p > 0)
+        foo()
+    <caret>
+}
+
+// EXIST: else
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST: typealias
+// EXIST: as
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/Else2.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo(p: Int) {
     if (p > 0)

idea/idea-completion/testData/keywords/GlobalPropertyAccessors.fir.kt

@@ -0,0 +1,59 @@
+// FIR_COMPARISON
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
+fun foo() {
+    bar()
+}
+
+fun bar() {
+    foo()
+}
+
+var a : Int
+  <caret>
+
+// EXIST:  abstract
+// EXIST: by
+// EXIST:  class
+// EXIST:  class GlobalPropertyAccessors
+// EXIST:  enum class
+// EXIST:  enum class GlobalPropertyAccessors
+// EXIST:  final
+// EXIST:  fun
+// EXIST: { itemText: "get", tailText: null }
+// EXIST: { itemText: "get", tailText: "() = ..." }
+// EXIST: { itemText: "get", tailText: "() {...}" }
+// EXIST:  internal
+// EXIST:  object
+// EXIST:  object GlobalPropertyAccessors
+// EXIST:  open
+// EXIST:  private
+// EXIST:  public
+// EXIST: { itemText: "set", tailText: null }
+// EXIST: { itemText: "set", tailText: "(value) = ..." }
+// EXIST: { itemText: "set", tailText: "(value) {...}" }
+// EXIST:  interface
+// EXIST:  interface GlobalPropertyAccessors
+// EXIST:  val
+// EXIST:  var
+// EXIST:  operator
+// EXIST:  infix
+// EXIST:  sealed class
+// EXIST:  sealed class GlobalPropertyAccessors
+// EXIST:  sealed interface GlobalPropertyAccessors
+// EXIST:  sealed interface
+// EXIST:  data class
+// EXIST:  { "lookupString":"data class", "itemText":"data class", "tailText":" GlobalPropertyAccessors(...)", "attributes":"bold" }
+// EXIST:  inline
+// EXIST:  value
+// EXIST:  tailrec
+// EXIST:  external
+// EXIST:  annotation class
+// EXIST:  annotation class GlobalPropertyAccessors
+// EXIST:  const val
+// EXIST:  suspend fun
+// EXIST:  typealias
+// EXIST:  expect
+// EXIST:  actual
+// EXIST:  lateinit var
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/IfTryCatch.fir.kt

@@ -0,0 +1,33 @@
+// FIR_COMPARISON
+fun foo(p: Int) {
+    if (p > 0)
+        try {
+        }
+        catch (e: Exception) {
+        }
+        <caret>
+}
+
+// EXIST: catch
+// EXIST: finally
+// EXIST: else
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST: typealias
+// EXIST: as
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/IfTryCatch.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo(p: Int) {
     if (p > 0)

idea/idea-completion/testData/keywords/InArgumentList.fir.kt

@@ -0,0 +1,22 @@
+// FIR_COMPARISON
+fun foo(p: Int) {
+    x()
+    y()
+    val edge = a.b(<caret>)
+    z()
+}
+
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InArgumentList.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo(p: Int) {
     x()

idea/idea-completion/testData/keywords/InCodeBlock.fir.kt

@@ -0,0 +1,24 @@
+// FIR_COMPARISON
+fun foo() {
+    <caret>
+}
+
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST:  typealias
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InCodeBlock.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo() {
     <caret>

idea/idea-completion/testData/keywords/InElse.fir.kt

@@ -0,0 +1,32 @@
+// FIR_COMPARISON
+fun some() {
+
+    if (true) {
+
+    } else {
+        <caret>
+    }
+
+}
+
+
+// EXIST: do
+// EXIST: class
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: interface
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: typealias
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InElse.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun some() {
 

idea/idea-completion/testData/keywords/InFunctionExpressionBody.fir.kt

@@ -0,0 +1,16 @@
+// FIR_COMPARISON
+fun foo() = <caret>
+
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InFunctionExpressionBody.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo() = <caret>
 

idea/idea-completion/testData/keywords/InGetterExpressionBody.fir.kt

@@ -0,0 +1,17 @@
+// FIR_COMPARISON
+val prop: Int
+    get() = <caret>
+
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InGetterExpressionBody.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 val prop: Int
     get() = <caret>

idea/idea-completion/testData/keywords/InIf.fir.kt

@@ -0,0 +1,32 @@
+// FIR_COMPARISON
+fun some() {
+
+    if (true) {
+        <caret>
+    } else {
+
+    }
+
+}
+
+
+// EXIST: do
+// EXIST: class
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: interface
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: typealias
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InIf.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun some() {
 

idea/idea-completion/testData/keywords/InParameterDefaultValue.fir.kt

@@ -0,0 +1,17 @@
+// FIR_COMPARISON
+fun foo(p: Int = <caret>)
+
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InParameterDefaultValue.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 fun foo(p: Int = <caret>)
 

idea/idea-completion/testData/keywords/InPropertyInitializer.fir.kt

@@ -0,0 +1,16 @@
+// FIR_COMPARISON
+var a : Int = <caret>
+
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: throw
+// EXIST: true
+// EXIST: try
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/InPropertyInitializer.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FIR_COMPARISON
 var a : Int = <caret>
 

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/KotlinFirCompletionContributor.kt

@@ -78,6 +78,7 @@ private object KotlinFirCompletionProvider : CompletionProvider<CompletionParame
                 complete(callableContributor, positionContext)
                 complete(classifierContributor, positionContext)
             }
+
             is FirTypeNameReferencePositionContext -> {
                 complete(keywordContributor, positionContext)
                 complete(packageCompletionContributor, positionContext)
@@ -90,6 +91,10 @@ private object KotlinFirCompletionProvider : CompletionProvider<CompletionParame
                 complete(annotationsContributor, positionContext)
             }
 
+            is FirSuperTypeCallNameReferencePositionContext -> {
+                complete(FirSuperEntryContributor(basicContext), positionContext)
+            }
+
             is FirUnknownPositionContext -> {
                 complete(keywordContributor, positionContext)
             }

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/KotlinFirLookupElementFactory.kt

@@ -232,7 +232,7 @@ private object ClassifierInsertionHandler : InsertHandler<LookupElement> {
             context.document.replaceString(context.startOffset, context.tailOffset, fqName.render())
             context.commitDocument()
 
-            shortenReferences(targetFile, TextRange(context.startOffset, context.tailOffset))
+            shortenReferencesForFirCompletion(targetFile, TextRange(context.startOffset, context.tailOffset))
         }
     }
 }
@@ -338,7 +338,7 @@ private object FunctionInsertionHandler : QuotedNamesAwareInsertionHandler() {
             addArguments(context, element, lookupObject)
             context.commitDocument()
 
-            shortenReferences(targetFile, TextRange(context.startOffset, context.tailOffset))
+            shortenReferencesForFirCompletion(targetFile, TextRange(context.startOffset, context.tailOffset))
         } else {
             addArguments(context, element, lookupObject)
             context.commitDocument()
@@ -368,7 +368,7 @@ private object VariableInsertionHandler : InsertHandler<LookupElement> {
                 )
 
                 context.commitDocument()
-                shortenReferences(targetFile, TextRange(context.startOffset, context.tailOffset))
+                shortenReferencesForFirCompletion(targetFile, TextRange(context.startOffset, context.tailOffset))
             }
 
             is CallableImportStrategy.DoNothing -> {}
@@ -435,7 +435,7 @@ private fun CharSequence.indexOfSkippingSpace(c: Char, startIndex: Int): Int? {
     return null
 }
 
-private fun shortenReferences(targetFile: KtFile, textRange: TextRange) {
+internal fun shortenReferencesForFirCompletion(targetFile: KtFile, textRange: TextRange) {
     val shortenings = withAllowedResolve {
         analyse(targetFile) {
             collectPossibleReferenceShortenings(targetFile, textRange)

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/context/FirPositionCompletionContext.kt

@@ -39,6 +39,14 @@ internal class FirAnnotationTypeNameReferencePositionContext(
     val annotationEntry: KtAnnotationEntry,
 ) : FirNameReferencePositionContext()
 
+internal class FirSuperTypeCallNameReferencePositionContext(
+    override val position: PsiElement,
+    override val reference: KtSimpleNameReference,
+    override val nameExpression: KtSimpleNameExpression,
+    override val explicitReceiver: KtExpression?,
+    val superExpression: KtSuperExpression,
+) : FirNameReferencePositionContext()
+
 
 internal class FirExpressionNameReferencePositionContext(
     override val position: PsiElement,
@@ -78,15 +86,23 @@ internal object FirPositionCompletionContextDetector {
         nameExpression: KtSimpleNameExpression,
         explicitReceiver: KtExpression?
     ): FirNameReferencePositionContext {
-        val annotationEntry = userType.annotationEntry()
-            ?: return FirTypeNameReferencePositionContext(position, reference, nameExpression, explicitReceiver)
-        return FirAnnotationTypeNameReferencePositionContext(position, reference, nameExpression, explicitReceiver, annotationEntry)
-    }
-
-    private fun KtUserType.annotationEntry(): KtAnnotationEntry? {
-        val typeReference = (parent as? KtTypeReference)?.takeIf { it.typeElement == this }
-        val constructorCall = (typeReference?.parent as? KtConstructorCalleeExpression)?.takeIf { it.typeReference == typeReference }
-        return (constructorCall?.parent as? KtAnnotationEntry)?.takeIf { it.calleeExpression == constructorCall }
+        val typeReference = (userType.parent as? KtTypeReference)?.takeIf { it.typeElement == userType }
+        return when (val typeReferenceOwner = typeReference?.parent) {
+            is KtConstructorCalleeExpression -> {
+                val constructorCall = typeReferenceOwner.takeIf { it.typeReference == typeReference }
+                val annotationEntry = (constructorCall?.parent as? KtAnnotationEntry)?.takeIf { it.calleeExpression == constructorCall }
+                annotationEntry?.let {
+                    FirAnnotationTypeNameReferencePositionContext(position, reference, nameExpression, explicitReceiver, it)
+                }
+            }
+            is KtSuperExpression -> {
+                val superTypeCallEntry = typeReferenceOwner.takeIf { it.superTypeQualifier == typeReference }
+                superTypeCallEntry?.let {
+                    FirSuperTypeCallNameReferencePositionContext(position, reference, nameExpression, explicitReceiver, it)
+                }
+            }
+            else -> null
+        } ?: FirTypeNameReferencePositionContext(position, reference, nameExpression, explicitReceiver)
     }
 
     inline fun analyseInContext(

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/contributors/FirKeywordCompletionContributor.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.idea.completion.context.FirRawPositionCompletionCont
 import org.jetbrains.kotlin.idea.completion.context.FirUnknownPositionContext
 import org.jetbrains.kotlin.idea.completion.contributors.keywords.OverrideKeywordHandler
 import org.jetbrains.kotlin.idea.completion.contributors.keywords.ReturnKeywordHandler
+import org.jetbrains.kotlin.idea.completion.contributors.keywords.SuperKeywordHandler
 import org.jetbrains.kotlin.idea.completion.contributors.keywords.ThisKeywordHandler
 import org.jetbrains.kotlin.idea.completion.keywords.CompletionKeywordHandlerProvider
 import org.jetbrains.kotlin.idea.completion.keywords.CompletionKeywordHandlers
@@ -76,5 +77,6 @@ private class ResolveDependentCompletionKeywordHandlerProvider(
         ReturnKeywordHandler,
         OverrideKeywordHandler(basicContext),
         ThisKeywordHandler(basicContext),
+        SuperKeywordHandler,
     )
 }

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/contributors/FirSuperEntryContributor.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010-2021 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.idea.completion.contributors
+
+import com.intellij.codeInsight.lookup.LookupElementBuilder
+import org.jetbrains.kotlin.idea.completion.context.FirBasicCompletionContext
+import org.jetbrains.kotlin.idea.completion.context.FirSuperTypeCallNameReferenceRawPositionContext
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.FirSuperEntriesProvider.getSuperClassesAvailableForSuperCall
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.SuperCallLookupObject
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.SuperCallInsertionHandler
+import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.Name
+
+
+internal class FirSuperEntryContributor(
+    basicContext: FirBasicCompletionContext,
+) : FirContextCompletionContributorBase<FirSuperTypeCallNameReferenceRawPositionContext>(basicContext) {
+    override fun KtAnalysisSession.complete(positionContext: FirSuperTypeCallNameReferenceRawPositionContext) {
+        getSuperClassesAvailableForSuperCall(positionContext.nameExpression).forEach { superType ->
+            val tailText = superType.classIdIfNonLocal?.asString()?.let { "($it)" }
+            LookupElementBuilder.create(SuperLookupObject(superType.name, superType.classIdIfNonLocal), superType.name.asString())
+                .withTailText(tailText)
+                .withInsertHandler(SuperCallInsertionHandler)
+                .let { result.addElement(it) }
+        }
+    }
+}
+
+private class SuperLookupObject(val className: Name, val classId: ClassId?) : SuperCallLookupObject {
+    override val replaceTo: String
+        get() = when {
+            classId != null -> "${classId.asSingleFqName().asString()}>"
+            else -> "${className.asString()}>"
+        }
+
+    override val shortenReferencesInReplaced: Boolean
+        get() = classId != null
+}

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/contributors/helpers/FirSuperEntriesProvider.kt

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2010-2021 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.idea.completion.contributors.helpers
+
+import com.intellij.codeInsight.completion.CodeCompletionHandlerBase
+import com.intellij.codeInsight.completion.CompletionType
+import com.intellij.codeInsight.completion.InsertHandler
+import com.intellij.codeInsight.completion.InsertionContext
+import com.intellij.codeInsight.lookup.LookupElement
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.util.TextRange
+import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.idea.completion.shortenReferencesForFirCompletion
+import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
+import org.jetbrains.kotlin.idea.frontend.api.symbols.KtNamedClassOrObjectSymbol
+import org.jetbrains.kotlin.idea.frontend.api.types.KtClassType
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
+
+internal object FirSuperEntriesProvider {
+    fun KtAnalysisSession.getSuperClassesAvailableForSuperCall(context: PsiElement): List<KtNamedClassOrObjectSymbol> {
+        val containingClass = context.getStrictParentOfType<KtClassOrObject>() ?: return emptyList()
+        val containingClassSymbol = containingClass.getClassOrObjectSymbol()
+        return containingClassSymbol.superTypes.mapNotNull { superType ->
+            val classType = superType.type as? KtClassType ?: return@mapNotNull null
+            classType.classSymbol as? KtNamedClassOrObjectSymbol
+        }
+    }
+}
+
+internal object SuperCallInsertionHandler : InsertHandler<LookupElement> {
+    override fun handleInsert(context: InsertionContext, item: LookupElement) {
+        val lookupObject = item.`object` as SuperCallLookupObject
+
+        replaceWithClassIdAndShorten(lookupObject, context)
+        addDot(context)
+        invokeCompletion(context)
+    }
+
+    private fun replaceWithClassIdAndShorten(
+        lookupObject: SuperCallLookupObject,
+        context: InsertionContext
+    ) {
+        val replaceTo = lookupObject.replaceTo  ?: return
+        context.document.replaceString(context.startOffset, context.tailOffset, replaceTo)
+        context.commitDocument()
+
+        if (lookupObject.shortenReferencesInReplaced) {
+            val targetFile = context.file as KtFile
+            shortenReferencesForFirCompletion(targetFile, TextRange(context.startOffset, context.tailOffset))
+        }
+    }
+
+    private fun invokeCompletion(context: InsertionContext) {
+        ApplicationManager.getApplication().invokeLater {
+            CodeCompletionHandlerBase(CompletionType.BASIC, true, false, true)
+                .invokeCompletion(context.project, context.editor)
+        }
+    }
+
+    private fun addDot(context: InsertionContext) {
+        context.document.insertString(context.tailOffset, ".")
+        context.commitDocument()
+        context.editor.caretModel.moveToOffset(context.tailOffset)
+    }
+}
+
+internal interface SuperCallLookupObject {
+    val replaceTo: String?
+    val shortenReferencesInReplaced: Boolean
+}

idea/idea-fir/src/org/jetbrains/kotlin/idea/completion/contributors/keywords/SuperKeywordHandler.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010-2021 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.idea.completion.contributors.keywords
+
+import com.intellij.codeInsight.completion.*
+import com.intellij.codeInsight.lookup.LookupElement
+import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.idea.completion.KeywordLookupObject
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.FirSuperEntriesProvider.getSuperClassesAvailableForSuperCall
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.SuperCallLookupObject
+import org.jetbrains.kotlin.idea.completion.contributors.helpers.SuperCallInsertionHandler
+import org.jetbrains.kotlin.idea.completion.createKeywordElement
+import org.jetbrains.kotlin.idea.completion.keywords.CompletionKeywordHandler
+import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
+import org.jetbrains.kotlin.lexer.KtTokens
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.psi.KtExpression
+
+internal object SuperKeywordHandler : CompletionKeywordHandler<KtAnalysisSession>(KtTokens.SUPER_KEYWORD) {
+    @OptIn(ExperimentalStdlibApi::class)
+    override fun KtAnalysisSession.createLookups(
+        parameters: CompletionParameters,
+        expression: KtExpression?,
+        lookup: LookupElement,
+        project: Project
+    ): Collection<LookupElement> {
+        val superClasses = getSuperClassesAvailableForSuperCall(parameters.position)
+
+        if (superClasses.isEmpty()) {
+            return emptyList()
+        }
+
+        if (expression == null) {
+            // for completion in secondary constructor delegation call
+            return listOf(lookup)
+        }
+
+        return when {
+            superClasses.size <= 1 -> listOf(lookup)
+            else -> buildList {
+                add(lookup)
+                superClasses.mapTo(this) { symbol ->
+                    createKeywordElement("super", "<${symbol.name}>", SuperKeywordLookupObject(symbol.name, symbol.classIdIfNonLocal))
+                        .withInsertHandler(SuperCallInsertionHandler)
+                }
+            }
+        }
+    }
+}
+
+private class SuperKeywordLookupObject(val className: Name, val classId: ClassId?) : KeywordLookupObject(), SuperCallLookupObject {
+    override val replaceTo: String?
+        get() = classId?.let { "super<${it.asSingleFqName().asString()}>" }
+
+    override val shortenReferencesInReplaced: Boolean
+        get() = classId != null
+}
+