[FIR] Add FirErrorResolvedQualifier for qualifiers with resolve diagnostic

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/collectors/components/ErrorNodeDiagnosticCollectorComponent.kt

@@ -18,6 +18,7 @@ import org.jetbrains.kotlin.fir.diagnostics.*
 import org.jetbrains.kotlin.fir.diagnostics.DiagnosticKind.*
 import org.jetbrains.kotlin.fir.expressions.FirErrorExpression
 import org.jetbrains.kotlin.fir.expressions.FirErrorLoop
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
 import org.jetbrains.kotlin.fir.references.FirErrorNamedReference
 import org.jetbrains.kotlin.fir.resolve.calls.CandidateApplicability
 import org.jetbrains.kotlin.fir.resolve.diagnostics.*
@@ -62,6 +63,11 @@ class ErrorNodeDiagnosticCollectorComponent(collector: AbstractDiagnosticCollect
         runCheck { reportFirDiagnostic(errorFunction.diagnostic, source, it) }
     }
 
+    override fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: CheckerContext) {
+        val source = errorResolvedQualifier.source ?: return
+        runCheck { reportFirDiagnostic(errorResolvedQualifier.diagnostic, source, it) }
+    }
+
     private fun reportFirDiagnostic(diagnostic: ConeDiagnostic, source: FirSourceElement, reporter: DiagnosticReporter) {
         val coneDiagnostic = when (diagnostic) {
             is ConeUnresolvedReferenceError -> FirErrors.UNRESOLVED_REFERENCE.on(source, diagnostic.name?.asString() ?: "<No name>")

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirCallResolver.kt

@@ -11,10 +11,7 @@ import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
 import org.jetbrains.kotlin.fir.expressions.*
 import org.jetbrains.kotlin.fir.expressions.builder.buildExpressionStub
 import org.jetbrains.kotlin.fir.expressions.builder.buildResolvedReifiedParameterReference
-import org.jetbrains.kotlin.fir.references.FirNamedReference
-import org.jetbrains.kotlin.fir.references.FirReference
-import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
-import org.jetbrains.kotlin.fir.references.FirSuperReference
+import org.jetbrains.kotlin.fir.references.*
 import org.jetbrains.kotlin.fir.references.builder.buildBackingFieldReference
 import org.jetbrains.kotlin.fir.references.builder.buildResolvedNamedReference
 import org.jetbrains.kotlin.fir.references.impl.FirSimpleNamedReference
@@ -211,9 +208,15 @@ class FirCallResolver(
             else -> null
         }
 
+        val diagnostic = when (nameReference) {
+            is FirErrorReferenceWithCandidate -> nameReference.diagnostic
+            is FirErrorNamedReference -> nameReference.diagnostic
+            else -> null
+        }
+
         when {
             referencedSymbol is FirClassLikeSymbol<*> -> {
-                return buildResolvedQualifierForClass(referencedSymbol, nameReference.source, qualifiedAccess.typeArguments)
+                return buildResolvedQualifierForClass(referencedSymbol, nameReference.source, qualifiedAccess.typeArguments, diagnostic)
             }
             referencedSymbol is FirTypeParameterSymbol && referencedSymbol.fir.isReified -> {
                 return buildResolvedReifiedParameterReference {

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt

@@ -10,11 +10,11 @@ import org.jetbrains.kotlin.builtins.functions.FunctionClassDescriptor
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.declarations.*
+import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
 import org.jetbrains.kotlin.fir.diagnostics.*
 import org.jetbrains.kotlin.fir.expressions.*
-import org.jetbrains.kotlin.fir.expressions.builder.FirResolvedReifiedParameterReferenceBuilder
-import org.jetbrains.kotlin.fir.expressions.builder.buildExpressionWithSmartcast
-import org.jetbrains.kotlin.fir.expressions.builder.buildResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.builder.*
+import org.jetbrains.kotlin.fir.typeContext
 import org.jetbrains.kotlin.fir.references.FirErrorNamedReference
 import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
 import org.jetbrains.kotlin.fir.references.FirSuperReference
@@ -255,16 +255,24 @@ fun BodyResolveComponents.buildResolvedQualifierForClass(
     regularClass: FirClassLikeSymbol<*>,
     sourceElement: FirSourceElement? = null,
     // TODO: Clarify if we actually need type arguments for qualifier?
-    typeArgumentsForQualifier: List<FirTypeProjection> = emptyList()
+    typeArgumentsForQualifier: List<FirTypeProjection> = emptyList(),
+    diagnostic: ConeDiagnostic? = null
 ): FirResolvedQualifier {
     val classId = regularClass.classId
-    return buildResolvedQualifier {
+
+    val builder: FirAbstractResolvedQualifierBuilder = if (diagnostic == null) {
+        FirResolvedQualifierBuilder()
+    } else {
+        FirErrorResolvedQualifierBuilder().apply { this.diagnostic = diagnostic }
+    }
+
+    return builder.apply {
         source = sourceElement
         packageFqName = classId.packageFqName
         relativeClassFqName = classId.relativeClassName
         typeArguments.addAll(typeArgumentsForQualifier)
         symbol = regularClass
-    }.apply {
+    }.build().apply {
         resultType = if (classId.isLocal) {
             typeForQualifierByDeclaration(regularClass.fir, resultType, session)
                 ?: session.builtinTypes.unitType

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/FirErrorResolvedQualifier.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2010-2020 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.fir.expressions
+
+import org.jetbrains.kotlin.fir.FirSourceElement
+import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
+import org.jetbrains.kotlin.fir.diagnostics.FirDiagnosticHolder
+import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
+import org.jetbrains.kotlin.fir.types.FirTypeProjection
+import org.jetbrains.kotlin.fir.types.FirTypeRef
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.fir.visitors.*
+
+/*
+ * This file was generated automatically
+ * DO NOT MODIFY IT MANUALLY
+ */
+
+abstract class FirErrorResolvedQualifier : FirResolvedQualifier(), FirDiagnosticHolder {
+    abstract override val source: FirSourceElement?
+    abstract override val typeRef: FirTypeRef
+    abstract override val annotations: List<FirAnnotationCall>
+    abstract override val packageFqName: FqName
+    abstract override val relativeClassFqName: FqName?
+    abstract override val classId: ClassId?
+    abstract override val symbol: FirClassLikeSymbol<*>?
+    abstract override val isNullableLHSForCallableReference: Boolean
+    abstract override val typeArguments: List<FirTypeProjection>
+    abstract override val diagnostic: ConeDiagnostic
+
+    override fun <R, D> accept(visitor: FirVisitor<R, D>, data: D): R = visitor.visitErrorResolvedQualifier(this, data)
+
+    abstract override fun replaceTypeRef(newTypeRef: FirTypeRef)
+
+    abstract override fun replaceIsNullableLHSForCallableReference(newIsNullableLHSForCallableReference: Boolean)
+
+    abstract override fun replaceTypeArguments(newTypeArguments: List<FirTypeProjection>)
+
+    abstract override fun <D> transformAnnotations(transformer: FirTransformer<D>, data: D): FirErrorResolvedQualifier
+
+    abstract override fun <D> transformTypeArguments(transformer: FirTransformer<D>, data: D): FirErrorResolvedQualifier
+}

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/builder/FirAbstractResolvedQualifierBuilder.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2020 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.fir.expressions.builder
+
+import org.jetbrains.kotlin.fir.FirSourceElement
+import org.jetbrains.kotlin.fir.builder.FirBuilderDsl
+import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
+import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
+import org.jetbrains.kotlin.fir.types.FirTypeProjection
+import org.jetbrains.kotlin.fir.types.FirTypeRef
+import org.jetbrains.kotlin.fir.visitors.*
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.FqName
+
+/*
+ * This file was generated automatically
+ * DO NOT MODIFY IT MANUALLY
+ */
+
+@FirBuilderDsl
+interface FirAbstractResolvedQualifierBuilder {
+    abstract var source: FirSourceElement?
+    abstract var typeRef: FirTypeRef
+    abstract val annotations: MutableList<FirAnnotationCall>
+    abstract var packageFqName: FqName
+    abstract var relativeClassFqName: FqName?
+    abstract var classId: ClassId?
+    abstract var symbol: FirClassLikeSymbol<*>?
+    abstract var isNullableLHSForCallableReference: Boolean
+    abstract val typeArguments: MutableList<FirTypeProjection>
+
+    fun build(): FirResolvedQualifier
+}

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/builder/FirErrorResolvedQualifierBuilder.kt

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2010-2020 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.fir.expressions.builder
+
+import kotlin.contracts.*
+import org.jetbrains.kotlin.fir.FirSourceElement
+import org.jetbrains.kotlin.fir.builder.FirAnnotationContainerBuilder
+import org.jetbrains.kotlin.fir.builder.FirBuilderDsl
+import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
+import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.builder.FirAbstractResolvedQualifierBuilder
+import org.jetbrains.kotlin.fir.expressions.builder.FirExpressionBuilder
+import org.jetbrains.kotlin.fir.expressions.impl.FirErrorResolvedQualifierImpl
+import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
+import org.jetbrains.kotlin.fir.types.FirTypeProjection
+import org.jetbrains.kotlin.fir.types.FirTypeRef
+import org.jetbrains.kotlin.fir.types.impl.FirImplicitTypeRefImpl
+import org.jetbrains.kotlin.fir.visitors.*
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.FqName
+
+/*
+ * This file was generated automatically
+ * DO NOT MODIFY IT MANUALLY
+ */
+
+@FirBuilderDsl
+class FirErrorResolvedQualifierBuilder : FirAbstractResolvedQualifierBuilder, FirAnnotationContainerBuilder, FirExpressionBuilder {
+    override var source: FirSourceElement? = null
+    override val annotations: MutableList<FirAnnotationCall> = mutableListOf()
+    override lateinit var packageFqName: FqName
+    override var relativeClassFqName: FqName? = null
+    override var classId: ClassId? = null
+    override var symbol: FirClassLikeSymbol<*>? = null
+    override var isNullableLHSForCallableReference: Boolean = false
+    override val typeArguments: MutableList<FirTypeProjection> = mutableListOf()
+    lateinit var diagnostic: ConeDiagnostic
+
+    override fun build(): FirErrorResolvedQualifier {
+        return FirErrorResolvedQualifierImpl(
+            source,
+            annotations,
+            packageFqName,
+            relativeClassFqName,
+            classId,
+            symbol,
+            isNullableLHSForCallableReference,
+            typeArguments,
+            diagnostic,
+        )
+    }
+
+
+    @Deprecated("Modification of 'typeRef' has no impact for FirErrorResolvedQualifierBuilder", level = DeprecationLevel.HIDDEN)
+    override var typeRef: FirTypeRef
+        get() = throw IllegalStateException()
+        set(value) {
+            throw IllegalStateException()
+        }
+}
+
+@OptIn(ExperimentalContracts::class)
+inline fun buildErrorResolvedQualifier(init: FirErrorResolvedQualifierBuilder.() -> Unit): FirErrorResolvedQualifier {
+    contract {
+        callsInPlace(init, kotlin.contracts.InvocationKind.EXACTLY_ONCE)
+    }
+    return FirErrorResolvedQualifierBuilder().apply(init).build()
+}

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/builder/FirResolvedQualifierBuilder.kt

@@ -11,6 +11,7 @@ import org.jetbrains.kotlin.fir.builder.FirAnnotationContainerBuilder
 import org.jetbrains.kotlin.fir.builder.FirBuilderDsl
 import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
 import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.builder.FirAbstractResolvedQualifierBuilder
 import org.jetbrains.kotlin.fir.expressions.builder.FirExpressionBuilder
 import org.jetbrains.kotlin.fir.expressions.impl.FirResolvedQualifierImpl
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
@@ -27,15 +28,15 @@ import org.jetbrains.kotlin.name.FqName
  */
 
 @FirBuilderDsl
-class FirResolvedQualifierBuilder : FirAnnotationContainerBuilder, FirExpressionBuilder {
+class FirResolvedQualifierBuilder : FirAbstractResolvedQualifierBuilder, FirAnnotationContainerBuilder, FirExpressionBuilder {
     override var source: FirSourceElement? = null
     override var typeRef: FirTypeRef = FirImplicitTypeRefImpl(null)
     override val annotations: MutableList<FirAnnotationCall> = mutableListOf()
-    lateinit var packageFqName: FqName
-    var relativeClassFqName: FqName? = null
-    var symbol: FirClassLikeSymbol<*>? = null
-    var isNullableLHSForCallableReference: Boolean = false
-    val typeArguments: MutableList<FirTypeProjection> = mutableListOf()
+    override lateinit var packageFqName: FqName
+    override var relativeClassFqName: FqName? = null
+    override var symbol: FirClassLikeSymbol<*>? = null
+    override var isNullableLHSForCallableReference: Boolean = false
+    override val typeArguments: MutableList<FirTypeProjection> = mutableListOf()
 
     override fun build(): FirResolvedQualifier {
         return FirResolvedQualifierImpl(
@@ -50,6 +51,13 @@ class FirResolvedQualifierBuilder : FirAnnotationContainerBuilder, FirExpression
         )
     }
 
+
+    @Deprecated("Modification of 'classId' has no impact for FirResolvedQualifierBuilder", level = DeprecationLevel.HIDDEN)
+    override var classId: ClassId?
+        get() = throw IllegalStateException()
+        set(value) {
+            throw IllegalStateException()
+        }
 }
 
 @OptIn(ExperimentalContracts::class)

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirErrorResolvedQualifierImpl.kt

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2010-2020 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.fir.expressions.impl
+
+import org.jetbrains.kotlin.fir.FirSourceElement
+import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
+import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
+import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
+import org.jetbrains.kotlin.fir.types.FirTypeProjection
+import org.jetbrains.kotlin.fir.types.FirTypeRef
+import org.jetbrains.kotlin.fir.types.impl.FirImplicitTypeRefImpl
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.fir.visitors.*
+
+/*
+ * This file was generated automatically
+ * DO NOT MODIFY IT MANUALLY
+ */
+
+internal class FirErrorResolvedQualifierImpl(
+    override val source: FirSourceElement?,
+    override val annotations: MutableList<FirAnnotationCall>,
+    override val packageFqName: FqName,
+    override val relativeClassFqName: FqName?,
+    override val classId: ClassId?,
+    override val symbol: FirClassLikeSymbol<*>?,
+    override var isNullableLHSForCallableReference: Boolean,
+    override val typeArguments: MutableList<FirTypeProjection>,
+    override val diagnostic: ConeDiagnostic,
+) : FirErrorResolvedQualifier() {
+    override var typeRef: FirTypeRef = FirImplicitTypeRefImpl(null)
+
+    override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
+        typeRef.accept(visitor, data)
+        annotations.forEach { it.accept(visitor, data) }
+        typeArguments.forEach { it.accept(visitor, data) }
+    }
+
+    override fun <D> transformChildren(transformer: FirTransformer<D>, data: D): FirErrorResolvedQualifierImpl {
+        typeRef = typeRef.transformSingle(transformer, data)
+        transformAnnotations(transformer, data)
+        transformTypeArguments(transformer, data)
+        return this
+    }
+
+    override fun <D> transformAnnotations(transformer: FirTransformer<D>, data: D): FirErrorResolvedQualifierImpl {
+        annotations.transformInplace(transformer, data)
+        return this
+    }
+
+    override fun <D> transformTypeArguments(transformer: FirTransformer<D>, data: D): FirErrorResolvedQualifierImpl {
+        typeArguments.transformInplace(transformer, data)
+        return this
+    }
+
+    override fun replaceTypeRef(newTypeRef: FirTypeRef) {
+        typeRef = newTypeRef
+    }
+
+    override fun replaceIsNullableLHSForCallableReference(newIsNullableLHSForCallableReference: Boolean) {
+        isNullableLHSForCallableReference = newIsNullableLHSForCallableReference
+    }
+
+    override fun replaceTypeArguments(newTypeArguments: List<FirTypeProjection>) {
+        typeArguments.clear()
+        typeArguments.addAll(newTypeArguments)
+    }
+}

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/visitors/FirTransformer.kt

@@ -101,6 +101,7 @@ import org.jetbrains.kotlin.fir.expressions.FirSpreadArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirNamedArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirVarargArgumentsExpression
 import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
 import org.jetbrains.kotlin.fir.expressions.FirResolvedReifiedParameterReference
 import org.jetbrains.kotlin.fir.expressions.FirReturnExpression
 import org.jetbrains.kotlin.fir.expressions.FirStringConcatenationCall
@@ -521,6 +522,10 @@ abstract class FirTransformer<in D> : FirVisitor<CompositeTransformResult<FirEle
         return transformElement(resolvedQualifier, data)
     }
 
+    open fun transformErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: D): CompositeTransformResult<FirStatement> {
+        return transformElement(errorResolvedQualifier, data)
+    }
+
     open fun transformResolvedReifiedParameterReference(resolvedReifiedParameterReference: FirResolvedReifiedParameterReference, data: D): CompositeTransformResult<FirStatement> {
         return transformElement(resolvedReifiedParameterReference, data)
     }
@@ -1021,6 +1026,10 @@ abstract class FirTransformer<in D> : FirVisitor<CompositeTransformResult<FirEle
         return transformResolvedQualifier(resolvedQualifier, data)
     }
 
+    final override fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: D): CompositeTransformResult<FirStatement> {
+        return transformErrorResolvedQualifier(errorResolvedQualifier, data)
+    }
+
     final override fun visitResolvedReifiedParameterReference(resolvedReifiedParameterReference: FirResolvedReifiedParameterReference, data: D): CompositeTransformResult<FirStatement> {
         return transformResolvedReifiedParameterReference(resolvedReifiedParameterReference, data)
     }

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/visitors/FirVisitor.kt

@@ -101,6 +101,7 @@ import org.jetbrains.kotlin.fir.expressions.FirSpreadArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirNamedArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirVarargArgumentsExpression
 import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
 import org.jetbrains.kotlin.fir.expressions.FirResolvedReifiedParameterReference
 import org.jetbrains.kotlin.fir.expressions.FirReturnExpression
 import org.jetbrains.kotlin.fir.expressions.FirStringConcatenationCall
@@ -329,6 +330,8 @@ abstract class FirVisitor<out R, in D> {
 
     open fun visitResolvedQualifier(resolvedQualifier: FirResolvedQualifier, data: D): R  = visitElement(resolvedQualifier, data)
 
+    open fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: D): R  = visitElement(errorResolvedQualifier, data)
+
     open fun visitResolvedReifiedParameterReference(resolvedReifiedParameterReference: FirResolvedReifiedParameterReference, data: D): R  = visitElement(resolvedReifiedParameterReference, data)
 
     open fun visitReturnExpression(returnExpression: FirReturnExpression, data: D): R  = visitElement(returnExpression, data)

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/visitors/FirVisitorVoid.kt

@@ -101,6 +101,7 @@ import org.jetbrains.kotlin.fir.expressions.FirSpreadArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirNamedArgumentExpression
 import org.jetbrains.kotlin.fir.expressions.FirVarargArgumentsExpression
 import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.expressions.FirErrorResolvedQualifier
 import org.jetbrains.kotlin.fir.expressions.FirResolvedReifiedParameterReference
 import org.jetbrains.kotlin.fir.expressions.FirReturnExpression
 import org.jetbrains.kotlin.fir.expressions.FirStringConcatenationCall
@@ -519,6 +520,10 @@ abstract class FirVisitorVoid : FirVisitor<Unit, Nothing?>() {
         visitElement(resolvedQualifier)
     }
 
+    open fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier) {
+        visitElement(errorResolvedQualifier)
+    }
+
     open fun visitResolvedReifiedParameterReference(resolvedReifiedParameterReference: FirResolvedReifiedParameterReference) {
         visitElement(resolvedReifiedParameterReference)
     }
@@ -1019,6 +1024,10 @@ abstract class FirVisitorVoid : FirVisitor<Unit, Nothing?>() {
         visitResolvedQualifier(resolvedQualifier)
     }
 
+    final override fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: Nothing?) {
+        visitErrorResolvedQualifier(errorResolvedQualifier)
+    }
+
     final override fun visitResolvedReifiedParameterReference(resolvedReifiedParameterReference: FirResolvedReifiedParameterReference, data: Nothing?) {
         visitResolvedReifiedParameterReference(resolvedReifiedParameterReference)
     }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/visitors/FirDefaultTransformer.kt

@@ -99,5 +99,12 @@ abstract class FirDefaultTransformer<D> : FirTransformer<D>() {
     override fun transformErrorFunction(errorFunction: FirErrorFunction, data: D): CompositeTransformResult<FirStatement> {
         return transformFunction(errorFunction, data)
     }
+
+    override fun transformErrorResolvedQualifier(
+        errorResolvedQualifier: FirErrorResolvedQualifier,
+        data: D
+    ): CompositeTransformResult<FirStatement> {
+        return transformResolvedQualifier(errorResolvedQualifier, data)
+    }
 }
 

compiler/fir/tree/src/org/jetbrains/kotlin/fir/visitors/FirDefaultVisitor.kt

@@ -95,5 +95,9 @@ abstract class FirDefaultVisitor<R, D> : FirVisitor<R, D>() {
     override fun visitErrorFunction(errorFunction: FirErrorFunction, data: D): R {
         return visitFunction(errorFunction, data)
     }
+
+    override fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier, data: D): R {
+        return visitResolvedQualifier(errorResolvedQualifier, data)
+    }
 }
 

compiler/fir/tree/src/org/jetbrains/kotlin/fir/visitors/FirDefaultVisitorVoid.kt

@@ -95,4 +95,8 @@ abstract class FirDefaultVisitorVoid : FirVisitorVoid() {
     override fun visitErrorFunction(errorFunction: FirErrorFunction) {
         return visitFunction(errorFunction)
     }
-}
+
+    override fun visitErrorResolvedQualifier(errorResolvedQualifier: FirErrorResolvedQualifier) {
+        return visitResolvedQualifier(errorResolvedQualifier)
+    }
+}

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/BuilderConfigurator.kt

@@ -292,7 +292,17 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             default("symbol", "FirAnonymousInitializerSymbol()")
         }
 
+        val abstractResolvedQualifierBuilder by builder {
+            fields from resolvedQualifier
+        }
+
         builder(resolvedQualifier) {
+            parents += abstractResolvedQualifierBuilder
+            defaultFalse("isNullableLHSForCallableReference")
+        }
+
+        builder(errorResolvedQualifier) {
+            parents += abstractResolvedQualifierBuilder
             defaultFalse("isNullableLHSForCallableReference")
         }
 

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/FirTreeBuilder.kt

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.fir.tree.generator
 import org.jetbrains.kotlin.fir.tree.generator.context.AbstractFirTreeBuilder
 import org.jetbrains.kotlin.fir.tree.generator.model.Element.Kind.*
 
+@Suppress("unused", "MemberVisibilityCanBePrivate")
 object FirTreeBuilder : AbstractFirTreeBuilder() {
     val annotationContainer = element("AnnotationContainer", Other)
     val typeRef = element("TypeRef", TypeRef, annotationContainer)
@@ -118,6 +119,7 @@ object FirTreeBuilder : AbstractFirTreeBuilder() {
     val varargArgumentsExpression = element("VarargArgumentsExpression", Expression, expression)
 
     val resolvedQualifier = element("ResolvedQualifier", Expression, expression)
+    val errorResolvedQualifier = element("ErrorResolvedQualifier", Expression, resolvedQualifier, diagnosticHolder)
     val resolvedReifiedParameterReference = element("ResolvedReifiedParameterReference", Expression, expression)
     val returnExpression = element("ReturnExpression", Expression, jump)
     val stringConcatenationCall = element("StringConcatenationCall", Expression, call, expression)

compiler/testData/diagnostics/tests/classObjects/ClassObjectVisibility.fir.kt

@@ -2,7 +2,7 @@ package foo
 
 fun test() {
   A.d
-  A.Companion.f
+  A.Companion.<!HIDDEN!>f<!>
   B.D
   CCC
   CCC.classObjectVar

compiler/testData/diagnostics/tests/classObjects/invisibleClassObjects.fir.kt

@@ -35,14 +35,14 @@ import a.D
 
 fun test() {
     f(A)
-    f(B)
+    f(<!HIDDEN!>B<!>)
     f(C)
-    f(D)
+    f(<!HIDDEN!>D<!>)
 
     A.foo()
-    B.bar()
+    <!HIDDEN!>B<!>.bar()
     C.baz()
-    D.quux()
+    <!HIDDEN!>D<!>.quux()
 
     a.A.foo()
     a.C.baz()

compiler/testData/diagnostics/tests/j+k/packageVisibility.fir.kt

@@ -28,9 +28,9 @@ import a.MyJavaClass
 
 val <!EXPOSED_PROPERTY_TYPE!>mc1<!> = <!HIDDEN!>MyJavaClass<!>()
 
-val x = MyJavaClass.<!HIDDEN!>staticMethod<!>()
-val y = MyJavaClass.NestedClass.<!HIDDEN!>staticMethodOfNested<!>()
-val <!EXPOSED_PROPERTY_TYPE!>z<!> = MyJavaClass.<!HIDDEN!>NestedClass<!>()
+val x = <!HIDDEN!>MyJavaClass<!>.<!HIDDEN!>staticMethod<!>()
+val y = MyJavaClass.<!HIDDEN!>NestedClass<!>.<!HIDDEN!>staticMethodOfNested<!>()
+val <!EXPOSED_PROPERTY_TYPE!>z<!> = <!HIDDEN!>MyJavaClass<!>.<!HIDDEN!>NestedClass<!>()
 
 //FILE: c.kt
 package a.c
@@ -39,6 +39,6 @@ import a.MyJavaClass
 
 val <!EXPOSED_PROPERTY_TYPE!>mc1<!> = <!HIDDEN!>MyJavaClass<!>()
 
-val x = MyJavaClass.<!HIDDEN!>staticMethod<!>()
-val y = MyJavaClass.NestedClass.<!HIDDEN!>staticMethodOfNested<!>()
-val <!EXPOSED_PROPERTY_TYPE!>z<!> = MyJavaClass.<!HIDDEN!>NestedClass<!>()
+val x = <!HIDDEN!>MyJavaClass<!>.<!HIDDEN!>staticMethod<!>()
+val y = MyJavaClass.<!HIDDEN!>NestedClass<!>.<!HIDDEN!>staticMethodOfNested<!>()
+val <!EXPOSED_PROPERTY_TYPE!>z<!> = <!HIDDEN!>MyJavaClass<!>.<!HIDDEN!>NestedClass<!>()

compiler/testData/diagnostics/tests/privateInFile/visibility.fir.kt

@@ -37,7 +37,7 @@ fun test() {
     val z = <!HIDDEN!>x<!>
     <!HIDDEN!>x<!> = 30
 
-    val po = PO
+    val po = <!HIDDEN!>PO<!>
 
     val v = xx
     xx = 40

compiler/testData/diagnostics/tests/scopes/visibility2.fir.kt

@@ -30,7 +30,7 @@ fun test() {
     val u : A = <!HIDDEN!>A<!>()
     val a : java.util.Arrays.ArrayList<Int>;
 
-    val po = PO
+    val po = <!HIDDEN!>PO<!>
 }
 
 class B : <!EXPOSED_SUPER_CLASS, HIDDEN!>A<!>() {}

compiler/testData/diagnostics/tests/scopes/visibility3.fir.kt

@@ -33,7 +33,7 @@ fun test() {
     val z = <!HIDDEN!>x<!>
     <!HIDDEN!>x<!> = 30
 
-    val po = PO
+    val po = <!HIDDEN!>PO<!>
 }
 
 class B : <!EXPOSED_SUPER_CLASS, HIDDEN!>A<!>() {}