[FE] Rename FreedomForSealedClasses feature with more meaningful name

compiler/frontend/src/org/jetbrains/kotlin/resolve/BodyResolver.java

@@ -56,7 +56,7 @@ import org.jetbrains.kotlin.util.ReenteringLazyValueComputationException;
 
 import java.util.*;
 
-import static org.jetbrains.kotlin.config.LanguageFeature.FreedomForSealedClasses;
+import static org.jetbrains.kotlin.config.LanguageFeature.AllowSealedInheritorsInDifferentFilesOfSamePackage;
 import static org.jetbrains.kotlin.config.LanguageFeature.TopLevelSealedInheritance;
 import static org.jetbrains.kotlin.diagnostics.Errors.*;
 import static org.jetbrains.kotlin.resolve.BindingContext.*;
@@ -637,7 +637,7 @@ public class BodyResolver {
                     }
                     if (containingDescriptor == null) {
                         if (
-                            !languageVersionSettings.supportsFeature(FreedomForSealedClasses) ||
+                            !languageVersionSettings.supportsFeature(AllowSealedInheritorsInDifferentFilesOfSamePackage) ||
                             DescriptorUtils.isLocal(supertypeOwner)
                         ) {
                             trace.report(SEALED_SUPERTYPE.on(typeReference));

compiler/frontend/src/org/jetbrains/kotlin/resolve/FunctionDescriptorResolver.kt

@@ -392,7 +392,7 @@ class FunctionDescriptorResolver(
             resolveValueParameters(constructorDescriptor, parameterScope, valueParameters, trace, null),
             resolveVisibilityFromModifiers(
                 modifierList,
-                DescriptorUtils.getDefaultConstructorVisibility(classDescriptor, languageVersionSettings.supportsFeature(LanguageFeature.FreedomForSealedClasses))
+                DescriptorUtils.getDefaultConstructorVisibility(classDescriptor, languageVersionSettings.supportsFeature(LanguageFeature.AllowSealedInheritorsInDifferentFilesOfSamePackage))
             )
         )
         constructor.returnType = classDescriptor.defaultType

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/SealedInheritorInSamePackageChecker.kt

@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.resolve.bindingContextUtil.getAbbreviatedTypeOrType
 
 object SealedInheritorInSamePackageChecker : DeclarationChecker {
     override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
-        if (!context.languageVersionSettings.supportsFeature(LanguageFeature.FreedomForSealedClasses)) return
+        if (!context.languageVersionSettings.supportsFeature(LanguageFeature.AllowSealedInheritorsInDifferentFilesOfSamePackage)) return
         if (descriptor !is ClassDescriptor || declaration !is KtClassOrObject) return
         val classPackage = descriptor.containingPackage() ?: return // local class, SEALED_SUPERTYPE already reported
         for (superTypeListEntry in declaration.superTypeListEntries) {

compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyClassDescriptor.java

@@ -30,7 +30,6 @@ import org.jetbrains.kotlin.resolve.BindingContext;
 import org.jetbrains.kotlin.resolve.BindingTrace;
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils;
 import org.jetbrains.kotlin.resolve.DescriptorUtils;
-import org.jetbrains.kotlin.resolve.descriptorUtil.DescriptorUtilsKt;
 import org.jetbrains.kotlin.resolve.lazy.ForceResolveUtil;
 import org.jetbrains.kotlin.resolve.lazy.LazyClassContext;
 import org.jetbrains.kotlin.resolve.lazy.LazyEntity;
@@ -270,7 +269,7 @@ public class LazyClassDescriptor extends ClassDescriptorBase implements ClassDes
                 )
         );
 
-        boolean freedomForSealedInterfacesSupported = c.getLanguageVersionSettings().supportsFeature(LanguageFeature.FreedomForSealedClasses);
+        boolean freedomForSealedInterfacesSupported = c.getLanguageVersionSettings().supportsFeature(LanguageFeature.AllowSealedInheritorsInDifferentFilesOfSamePackage);
         this.sealedSubclasses = storageManager.createLazyValue(() -> c.getSealedClassInheritorsProvider().computeSealedSubclasses(this, freedomForSealedInterfacesSupported));
     }
 

compiler/testData/codegen/box/sealed/multipleFiles_enabled.kt

@@ -1,6 +1,6 @@
 // ISSUE: KT-13495
 // IGNORE_BACKEND_FIR: JVM_IR
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // FILE: Base.kt
 

compiler/testData/compileKotlinAgainstCustomBinaries/sealedClassesAndInterfaces/output.txt

@@ -1,7 +1,7 @@
 warning: ATTENTION!
 This build uses unsafe internal compiler arguments:
 
--XXLanguage:+FreedomForSealedClasses
+-XXLanguage:+AllowSealedInheritorsInDifferentFilesOfSamePackage
 -XXLanguage:+SealedInterfaces
 
 This mode is not recommended for production use,

compiler/testData/compileKotlinAgainstCustomBinaries/sealedInheritorInDifferentModule/output.txt

@@ -1,7 +1,7 @@
 warning: ATTENTION!
 This build uses unsafe internal compiler arguments:
 
--XXLanguage:+FreedomForSealedClasses
+-XXLanguage:+AllowSealedInheritorsInDifferentFilesOfSamePackage
 -XXLanguage:+SealedInterfaces
 
 This mode is not recommended for production use,

compiler/testData/diagnostics/tests/sealed/ExhaustiveWithFreedom.fir.kt

@@ -1,6 +1,6 @@
 // ISSUE: KT-13495
 // !DIAGNOSTICS: -UNUSED_VARIABLE
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // FILE: Base.kt
 

compiler/testData/diagnostics/tests/sealed/ExhaustiveWithFreedom.kt

@@ -1,6 +1,6 @@
 // ISSUE: KT-13495
 // !DIAGNOSTICS: -UNUSED_VARIABLE
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // FILE: Base.kt
 

compiler/testData/diagnostics/tests/sealed/MultipleFiles_enabled.fir.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-13495
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // FILE: a.kt
 

compiler/testData/diagnostics/tests/sealed/MultipleFiles_enabled.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-13495
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // FILE: a.kt
 

compiler/testData/diagnostics/tests/sealed/NestedSealedWithoutRestrictions.fir.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-13495
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 
 // FILE: base.kt

compiler/testData/diagnostics/tests/sealed/NestedSealedWithoutRestrictions.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-13495
-// !LANGUAGE: +FreedomForSealedClasses
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 
 // FILE: base.kt

compiler/testData/diagnostics/tests/sealed/inheritorInDifferentModule.fir.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-20423
-// !LANGUAGE: +SealedInterfaces +FreedomForSealedClasses
+// !LANGUAGE: +SealedInterfaces +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/sealed/inheritorInDifferentModule.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-20423
-// !LANGUAGE: +SealedInterfaces +FreedomForSealedClasses
+// !LANGUAGE: +SealedInterfaces +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/sealed/interfaces/inheritorInDifferentModule.fir.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-20423
-// !LANGUAGE: +SealedInterfaces +FreedomForSealedClasses
+// !LANGUAGE: +SealedInterfaces +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/sealed/interfaces/inheritorInDifferentModule.kt

@@ -1,5 +1,5 @@
 // ISSUE: KT-20423
-// !LANGUAGE: +SealedInterfaces +FreedomForSealedClasses
+// !LANGUAGE: +SealedInterfaces +AllowSealedInheritorsInDifferentFilesOfSamePackage
 
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/sealed/interfaces/simpleSealedInterface.kt

@@ -1,6 +1,6 @@
 // FIR_IDENTICAL
 // ISSUE: KT-20423
-// !LANGUAGE: +FreedomForSealedClasses +SealedInterfaces
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage +SealedInterfaces
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 
 sealed interface Base

compiler/tests/org/jetbrains/kotlin/jvm/compiler/CompileKotlinAgainstCustomBinariesTest.kt

@@ -695,13 +695,13 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration
     }
 
     fun testSealedClassesAndInterfaces() {
-        val features = listOf("-XXLanguage:+FreedomForSealedClasses", "-XXLanguage:+SealedInterfaces")
+        val features = listOf("-XXLanguage:+AllowSealedInheritorsInDifferentFilesOfSamePackage", "-XXLanguage:+SealedInterfaces")
         val library = compileLibrary("library", additionalOptions = features, checkKotlinOutput = {})
         compileKotlin("main.kt", tmpdir, listOf(library), additionalOptions = features)
     }
 
     fun testSealedInheritorInDifferentModule() {
-        val features = listOf("-XXLanguage:+FreedomForSealedClasses", "-XXLanguage:+SealedInterfaces")
+        val features = listOf("-XXLanguage:+AllowSealedInheritorsInDifferentFilesOfSamePackage", "-XXLanguage:+SealedInterfaces")
         val library = compileLibrary("library", additionalOptions = features, checkKotlinOutput = {})
         compileKotlin("main.kt", tmpdir, listOf(library), additionalOptions = features)
     }

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -143,7 +143,7 @@ enum class LanguageFeature(
     UseCorrectExecutionOrderForVarargArguments(KOTLIN_1_5, kind = BUG_FIX),
     JvmRecordSupport(KOTLIN_1_5),
 
-    FreedomForSealedClasses(KOTLIN_1_5),
+    AllowSealedInheritorsInDifferentFilesOfSamePackage(KOTLIN_1_5),
     SealedInterfaces(KOTLIN_1_5),
 
     // Temporarily disabled, see KT-27084/KT-22379