[FIR] Add SYNCHRONIZED_* diagnostics

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

@@ -3457,6 +3457,24 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirJvmErrors.SYNCHRONIZED_ON_ABSTRACT) { firDiagnostic ->
+        SynchronizedOnAbstractImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirJvmErrors.SYNCHRONIZED_IN_INTERFACE) { firDiagnostic ->
+        SynchronizedInInterfaceImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirJvmErrors.SYNCHRONIZED_ON_INLINE) { firDiagnostic ->
+        SynchronizedOnInlineImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirJvmErrors.JAVA_TYPE_MISMATCH) { firDiagnostic ->
         JavaTypeMismatchImpl(
             firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),

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

@@ -2410,6 +2410,18 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = VolatileOnDelegate::class
     }
 
+    abstract class SynchronizedOnAbstract : KtFirDiagnostic<KtAnnotationEntry>() {
+        override val diagnosticClass get() = SynchronizedOnAbstract::class
+    }
+
+    abstract class SynchronizedInInterface : KtFirDiagnostic<KtAnnotationEntry>() {
+        override val diagnosticClass get() = SynchronizedInInterface::class
+    }
+
+    abstract class SynchronizedOnInline : KtFirDiagnostic<KtAnnotationEntry>() {
+        override val diagnosticClass get() = SynchronizedOnInline::class
+    }
+
     abstract class JavaTypeMismatch : KtFirDiagnostic<KtExpression>() {
         override val diagnosticClass get() = JavaTypeMismatch::class
         abstract val expectedType: KtType

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

@@ -3899,6 +3899,27 @@ internal class VolatileOnDelegateImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class SynchronizedOnAbstractImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.SynchronizedOnAbstract(), KtAbstractFirDiagnostic<KtAnnotationEntry> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
+internal class SynchronizedInInterfaceImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.SynchronizedInInterface(), KtAbstractFirDiagnostic<KtAnnotationEntry> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
+internal class SynchronizedOnInlineImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.SynchronizedOnInline(), KtAbstractFirDiagnostic<KtAnnotationEntry> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class JavaTypeMismatchImpl(
     override val expectedType: KtType,
     override val actualType: KtType,