[FIR] Add UNCHECKED_CAST

Regenerate diagnostics code

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

@@ -1599,7 +1599,7 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
     add(FirErrors.WRONG_NUMBER_OF_TYPE_ARGUMENTS) { firDiagnostic ->
         WrongNumberOfTypeArgumentsImpl(
             firDiagnostic.a,
-            firSymbolBuilder.classifierBuilder.buildClassLikeSymbol(firDiagnostic.b.fir),
+            firSymbolBuilder.classifierBuilder.buildClassLikeSymbol(firDiagnostic.b.fir as FirClass),
             firDiagnostic as KtPsiDiagnostic,
             token,
         )
@@ -1614,7 +1614,7 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
     }
     add(FirErrors.OUTER_CLASS_ARGUMENTS_REQUIRED) { firDiagnostic ->
         OuterClassArgumentsRequiredImpl(
-            firSymbolBuilder.classifierBuilder.buildClassLikeSymbol(firDiagnostic.a.fir),
+            firSymbolBuilder.classifierBuilder.buildClassLikeSymbol(firDiagnostic.a.fir as FirClass),
             firDiagnostic as KtPsiDiagnostic,
             token,
         )
@@ -2771,7 +2771,7 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             firDiagnostic.b,
             firDiagnostic.c.mapKeys { (incompatible, _) ->
                 incompatible
-            }.mapValues { (_, collection) ->
+            }.mapValues { (_, collection) -> 
                 collection.map { firBasedSymbol ->
                                     firSymbolBuilder.buildSymbol(firBasedSymbol.fir)
                                 }
@@ -2785,7 +2785,7 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             firSymbolBuilder.buildSymbol(firDiagnostic.a.fir),
             firDiagnostic.b.mapKeys { (incompatible, _) ->
                 incompatible
-            }.mapValues { (_, collection) ->
+            }.mapValues { (_, collection) -> 
                 collection.map { firBasedSymbol ->
                                     firSymbolBuilder.buildSymbol(firBasedSymbol.fir)
                                 }
@@ -2820,7 +2820,7 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             firDiagnostic.b.map { pair ->
                 firSymbolBuilder.buildSymbol(pair.first.fir) to pair.second.mapKeys { (incompatible, _) ->
                                     incompatible
-                                }.mapValues { (_, collection) ->
+                                }.mapValues { (_, collection) -> 
                                     collection.map { firBasedSymbol ->
                                                             firSymbolBuilder.buildSymbol(firBasedSymbol.fir)
                                                         }
@@ -3100,13 +3100,13 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
     add(FirErrors.CANNOT_CHECK_FOR_ERASED) { firDiagnostic ->
         CannotCheckForErasedImpl(
             firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),
-            firDiagnostic as FirPsiDiagnostic,
+            firDiagnostic as KtPsiDiagnostic,
             token,
         )
     }
     add(FirErrors.CAST_NEVER_SUCCEEDS) { firDiagnostic ->
         CastNeverSucceedsImpl(
-            firDiagnostic as FirPsiDiagnostic,
+            firDiagnostic as KtPsiDiagnostic,
             token,
         )
     }
@@ -3116,6 +3116,14 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.UNCHECKED_CAST) { firDiagnostic ->
+        UncheckedCastImpl(
+            firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),
+            firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.b),
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.USELESS_IS_CHECK) { firDiagnostic ->
         UselessIsCheckImpl(
             firDiagnostic.a,

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

@@ -2181,6 +2181,12 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = UselessCast::class
     }
 
+    abstract class UncheckedCast : KtFirDiagnostic<KtBinaryExpressionWithTypeRHS>() {
+        override val diagnosticClass get() = UncheckedCast::class
+        abstract val originalType: KtType
+        abstract val targetType: KtType
+    }
+
     abstract class UselessIsCheck : KtFirDiagnostic<KtElement>() {
         override val diagnosticClass get() = UselessIsCheck::class
         abstract val compileTimeCheckResult: Boolean

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

@@ -2612,24 +2612,27 @@ internal class UselessElvisRightIsNullImpl(
 
 internal class CannotCheckForErasedImpl(
     override val type: KtType,
-    firDiagnostic: FirPsiDiagnostic,
+    override val firDiagnostic: KtPsiDiagnostic,
     override val token: ValidityToken,
-) : KtFirDiagnostic.CannotCheckForErased(), KtAbstractFirDiagnostic<PsiElement> {
-    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
-}
+) : KtFirDiagnostic.CannotCheckForErased(), KtAbstractFirDiagnostic<PsiElement>
 
 internal class CastNeverSucceedsImpl(
-    firDiagnostic: FirPsiDiagnostic,
+    override val firDiagnostic: KtPsiDiagnostic,
     override val token: ValidityToken,
-) : KtFirDiagnostic.CastNeverSucceeds(), KtAbstractFirDiagnostic<KtBinaryExpressionWithTypeRHS> {
-    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
-}
+) : KtFirDiagnostic.CastNeverSucceeds(), KtAbstractFirDiagnostic<KtBinaryExpressionWithTypeRHS>
 
 internal class UselessCastImpl(
     override val firDiagnostic: KtPsiDiagnostic,
     override val token: ValidityToken,
 ) : KtFirDiagnostic.UselessCast(), KtAbstractFirDiagnostic<KtBinaryExpressionWithTypeRHS>
 
+internal class UncheckedCastImpl(
+    override val originalType: KtType,
+    override val targetType: KtType,
+    override val firDiagnostic: KtPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.UncheckedCast(), KtAbstractFirDiagnostic<KtBinaryExpressionWithTypeRHS>
+
 internal class UselessIsCheckImpl(
     override val compileTimeCheckResult: Boolean,
     override val firDiagnostic: KtPsiDiagnostic,