FIR: inroduce FirFunInterfaceConstructorReferenceChecker

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -1338,6 +1338,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.FUN_INTERFACE_CONSTRUCTOR_REFERENCE) { firDiagnostic ->
+        FunInterfaceConstructorReferenceImpl(
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
     add(FirErrors.ABSTRACT_PROPERTY_IN_NON_ABSTRACT_CLASS) { firDiagnostic ->
         AbstractPropertyInNonAbstractClassImpl(
             firSymbolBuilder.buildSymbol(firDiagnostic.a as FirDeclaration),

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -949,6 +949,10 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = ValueParameterWithNoTypeAnnotation::class
     }
 
+    abstract class FunInterfaceConstructorReference : KtFirDiagnostic<KtExpression>() {
+        override val diagnosticClass get() = FunInterfaceConstructorReference::class
+    }
+
     abstract class AbstractPropertyInNonAbstractClass : KtFirDiagnostic<KtModifierListOwner>() {
         override val diagnosticClass get() = AbstractPropertyInNonAbstractClass::class
         abstract val property: KtSymbol

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -1529,6 +1529,13 @@ internal class ValueParameterWithNoTypeAnnotationImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
+internal class FunInterfaceConstructorReferenceImpl(
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.FunInterfaceConstructorReference(), KtAbstractFirDiagnostic<KtExpression> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
 internal class AbstractPropertyInNonAbstractClassImpl(
     override val property: KtSymbol,
     override val containingClass: KtSymbol,