K2 Scripting: deprecate top level script inner classes

no LT support yet

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

@@ -253,6 +253,18 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.INNER_ON_TOP_LEVEL_SCRIPT_CLASS.errorFactory) { firDiagnostic ->
+        InnerOnTopLevelScriptClassErrorImpl(
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirErrors.INNER_ON_TOP_LEVEL_SCRIPT_CLASS.warningFactory) { firDiagnostic ->
+        InnerOnTopLevelScriptClassWarningImpl(
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.INVISIBLE_REFERENCE) { firDiagnostic ->
         InvisibleReferenceImpl(
             firSymbolBuilder.buildSymbol(firDiagnostic.a),

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

@@ -217,6 +217,14 @@ sealed interface KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         val callableId: CallableId
     }
 
+    interface InnerOnTopLevelScriptClassError : KtFirDiagnostic<PsiElement> {
+        override val diagnosticClass get() = InnerOnTopLevelScriptClassError::class
+    }
+
+    interface InnerOnTopLevelScriptClassWarning : KtFirDiagnostic<PsiElement> {
+        override val diagnosticClass get() = InnerOnTopLevelScriptClassWarning::class
+    }
+
     interface InvisibleReference : KtFirDiagnostic<PsiElement> {
         override val diagnosticClass get() = InvisibleReference::class
         val reference: KtSymbol

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

@@ -246,6 +246,16 @@ internal class InvisibleSetterImpl(
     token: KtLifetimeToken,
 ) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.InvisibleSetter
 
+internal class InnerOnTopLevelScriptClassErrorImpl(
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.InnerOnTopLevelScriptClassError
+
+internal class InnerOnTopLevelScriptClassWarningImpl(
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.InnerOnTopLevelScriptClassWarning
+
 internal class InvisibleReferenceImpl(
     override val reference: KtSymbol,
     override val visible: Visibility,