FIR checker: report CAPTURED_VAL_INITIALIZATION

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

@@ -1988,6 +1988,20 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.CAPTURED_VAL_INITIALIZATION) { firDiagnostic ->
+        CapturedValInitializationImpl(
+            firSymbolBuilder.variableLikeBuilder.buildVariableSymbol(firDiagnostic.a.fir),
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
+    add(FirErrors.CAPTURED_MEMBER_VAL_INITIALIZATION) { firDiagnostic ->
+        CapturedMemberValInitializationImpl(
+            firSymbolBuilder.variableLikeBuilder.buildVariableSymbol(firDiagnostic.a.fir),
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
     add(FirErrors.WRONG_INVOCATION_KIND) { firDiagnostic ->
         WrongInvocationKindImpl(
             firSymbolBuilder.buildSymbol(firDiagnostic.a.fir as FirDeclaration),

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

@@ -1395,6 +1395,16 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         abstract val property: KtVariableSymbol
     }
 
+    abstract class CapturedValInitialization : KtFirDiagnostic<KtExpression>() {
+        override val diagnosticClass get() = CapturedValInitialization::class
+        abstract val property: KtVariableSymbol
+    }
+
+    abstract class CapturedMemberValInitialization : KtFirDiagnostic<KtExpression>() {
+        override val diagnosticClass get() = CapturedMemberValInitialization::class
+        abstract val property: KtVariableSymbol
+    }
+
     abstract class WrongInvocationKind : KtFirDiagnostic<PsiElement>() {
         override val diagnosticClass get() = WrongInvocationKind::class
         abstract val declaration: KtSymbol

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

@@ -2269,6 +2269,22 @@ internal class ValReassignmentViaBackingFieldErrorImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
+internal class CapturedValInitializationImpl(
+    override val property: KtVariableSymbol,
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.CapturedValInitialization(), KtAbstractFirDiagnostic<KtExpression> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
+internal class CapturedMemberValInitializationImpl(
+    override val property: KtVariableSymbol,
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.CapturedMemberValInitialization(), KtAbstractFirDiagnostic<KtExpression> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
 internal class WrongInvocationKindImpl(
     override val declaration: KtSymbol,
     override val requiredRange: EventOccurrencesRange,