FIR checker: ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_(ANNOTATION|FUNCTION)

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

@@ -1400,6 +1400,18 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.REDUNDANT_SPREAD_OPERATOR_IN_NAMED_FORM_IN_ANNOTATION) { firDiagnostic ->
+        RedundantSpreadOperatorInNamedFormInAnnotationImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirErrors.REDUNDANT_SPREAD_OPERATOR_IN_NAMED_FORM_IN_FUNCTION) { firDiagnostic ->
+        RedundantSpreadOperatorInNamedFormInFunctionImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.OVERLOAD_RESOLUTION_AMBIGUITY) { firDiagnostic ->
         OverloadResolutionAmbiguityImpl(
             firDiagnostic.a.map { firBasedSymbol ->

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

@@ -1005,6 +1005,14 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = AssigningSingleElementToVarargInNamedFormAnnotationWarning::class
     }
 
+    abstract class RedundantSpreadOperatorInNamedFormInAnnotation : KtFirDiagnostic<KtExpression>() {
+        override val diagnosticClass get() = RedundantSpreadOperatorInNamedFormInAnnotation::class
+    }
+
+    abstract class RedundantSpreadOperatorInNamedFormInFunction : KtFirDiagnostic<KtExpression>() {
+        override val diagnosticClass get() = RedundantSpreadOperatorInNamedFormInFunction::class
+    }
+
     abstract class OverloadResolutionAmbiguity : KtFirDiagnostic<PsiElement>() {
         override val diagnosticClass get() = OverloadResolutionAmbiguity::class
         abstract val candidates: List<KtSymbol>

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

@@ -1606,6 +1606,20 @@ internal class AssigningSingleElementToVarargInNamedFormAnnotationWarningImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class RedundantSpreadOperatorInNamedFormInAnnotationImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.RedundantSpreadOperatorInNamedFormInAnnotation(), KtAbstractFirDiagnostic<KtExpression> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
+internal class RedundantSpreadOperatorInNamedFormInFunctionImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.RedundantSpreadOperatorInNamedFormInFunction(), KtAbstractFirDiagnostic<KtExpression> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class OverloadResolutionAmbiguityImpl(
     override val candidates: List<KtSymbol>,
     firDiagnostic: FirPsiDiagnostic,