[FIR] Ensure NO_COMPANION_OBJECT is reported for typealiases

^KT-55733 Fixed
^KT-55186 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -501,6 +501,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
             runTest("compiler/testData/diagnostics/tests/kt54587_2.kt");
         }
 
+        @Test
+        @TestMetadata("kt55733.kt")
+        public void testKt55733() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/kt55733.kt");
+        }
+
         @Test
         @TestMetadata("LValueAssignment.kt")
         public void testLValueAssignment() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java

@@ -501,6 +501,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
             runTest("compiler/testData/diagnostics/tests/kt54587_2.kt");
         }
 
+        @Test
+        @TestMetadata("kt55733.kt")
+        public void testKt55733() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/kt55733.kt");
+        }
+
         @Test
         @TestMetadata("LValueAssignment.kt")
         public void testLValueAssignment() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java

@@ -501,6 +501,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
             runTest("compiler/testData/diagnostics/tests/kt54587_2.kt");
         }
 
+        @Test
+        @TestMetadata("kt55733.kt")
+        public void testKt55733() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/kt55733.kt");
+        }
+
         @Test
         @TestMetadata("LValueAssignment.kt")
         public void testLValueAssignment() throws Exception {

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirStandaloneQualifierChecker.kt

@@ -5,14 +5,18 @@
 
 package org.jetbrains.kotlin.fir.analysis.checkers.expression
 
+import org.jetbrains.kotlin.KtSourceElement
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
 import org.jetbrains.kotlin.diagnostics.reportOn
+import org.jetbrains.kotlin.fir.declarations.fullyExpandedClass
 import org.jetbrains.kotlin.fir.expressions.FirQualifiedAccess
 import org.jetbrains.kotlin.fir.expressions.FirResolvedQualifier
+import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirRegularClassSymbol
+import org.jetbrains.kotlin.fir.symbols.impl.FirTypeAliasSymbol
 import org.jetbrains.kotlin.fir.types.isUnit
 
 object FirStandaloneQualifierChecker : FirResolvedQualifierChecker() {
@@ -23,14 +27,20 @@ object FirStandaloneQualifierChecker : FirResolvedQualifierChecker() {
         if (lastGetClass?.argument === expression) return
         // Note: if it's real Unit, it will be filtered by ClassKind.OBJECT check below
         if (!expression.typeRef.isUnit) return
+        expression.symbol.reportErrorOn(expression.source, context, reporter)
+    }
 
-        when (val symbol = expression.symbol) {
+    private fun FirBasedSymbol<*>?.reportErrorOn(source: KtSourceElement?, context: CheckerContext, reporter: DiagnosticReporter) {
+        when (this) {
             is FirRegularClassSymbol -> {
-                if (symbol.classKind == ClassKind.OBJECT) return
-                reporter.reportOn(expression.source, FirErrors.NO_COMPANION_OBJECT, symbol, context)
+                if (classKind == ClassKind.OBJECT) return
+                reporter.reportOn(source, FirErrors.NO_COMPANION_OBJECT, this, context)
+            }
+            is FirTypeAliasSymbol -> {
+                fullyExpandedClass(context.session)?.reportErrorOn(source, context, reporter)
             }
             null -> {
-                reporter.reportOn(expression.source, FirErrors.EXPRESSION_EXPECTED_PACKAGE_FOUND, context)
+                reporter.reportOn(source, FirErrors.EXPRESSION_EXPECTED_PACKAGE_FOUND, context)
             }
             else -> {}
         }

compiler/testData/diagnostics/tests/kt55733.kt

@@ -0,0 +1,7 @@
+// FIR_IDENTICAL
+
+fun main() {
+    val appendable = <!NO_COMPANION_OBJECT!>Appendable<!>
+    val stringBuilder = <!NO_COMPANION_OBJECT!>StringBuilder<!>
+    val exception = <!NO_COMPANION_OBJECT!>IllegalStateException<!>
+}

compiler/testData/diagnostics/tests/kt55733.txt

@@ -0,0 +1,4 @@
+package
+
+public fun main(): kotlin.Unit
+

compiler/testData/diagnostics/tests/typealias/throwJLException.fir.kt

@@ -1,7 +0,0 @@
-// +JDK
-
-typealias Exn = java.lang.Exception
-
-fun test() {
-    throw Exn
-}

compiler/testData/diagnostics/tests/typealias/throwJLException.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // +JDK
 
 typealias Exn = java.lang.Exception

compiler/testData/diagnostics/tests/typealias/typeAliasConstructorForInterface.fir.kt

@@ -1,6 +0,0 @@
-interface IFoo
-
-typealias Test = IFoo
-
-val testAsFunction = <!RESOLUTION_TO_CLASSIFIER!>Test<!>()
-val testAsValue = Test

compiler/testData/diagnostics/tests/typealias/typeAliasConstructorForInterface.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 interface IFoo
 
 typealias Test = IFoo

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -501,6 +501,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
             runTest("compiler/testData/diagnostics/tests/kt54587_2.kt");
         }
 
+        @Test
+        @TestMetadata("kt55733.kt")
+        public void testKt55733() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/kt55733.kt");
+        }
+
         @Test
         @TestMetadata("LValueAssignment.kt")
         public void testLValueAssignment() throws Exception {