Rename AnalysisFlags.useExperimental to optIn

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -405,7 +405,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
 //                    WARNING, "'-Xopt-in' is deprecated and will be removed in a future release, please use -opt-in instead"
 //                )
             }
-            put(AnalysisFlags.useExperimental, useExperimentalFqNames + optInDeprecatedFqNames + optIn?.toList().orEmpty())
+            put(AnalysisFlags.optIn, useExperimentalFqNames + optInDeprecatedFqNames + optIn?.toList().orEmpty())
             put(AnalysisFlags.expectActualLinker, expectActualLinker)
             put(AnalysisFlags.explicitApiVersion, apiVersion != null)
             put(AnalysisFlags.allowResultReturnType, allowResultReturnType)

compiler/config/src/org/jetbrains/kotlin/config/AnalysisFlags.kt

@@ -19,7 +19,7 @@ object AnalysisFlags {
     val expectActualLinker by AnalysisFlag.Delegates.Boolean
 
     @JvmStatic
-    val useExperimental by AnalysisFlag.Delegates.ListOfStrings
+    val optIn by AnalysisFlag.Delegates.ListOfStrings
 
     @JvmStatic
     val explicitApiVersion by AnalysisFlag.Delegates.Boolean

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirOptInAnnotationCallChecker.kt

@@ -57,7 +57,7 @@ object FirOptInAnnotationCallChecker : FirAnnotationCallChecker() {
         reporter: DiagnosticReporter
     ) {
         val languageVersionSettings = context.session.languageVersionSettings
-        val useExperimentalFqNames = languageVersionSettings.getFlag(AnalysisFlags.useExperimental)
+        val useExperimentalFqNames = languageVersionSettings.getFlag(AnalysisFlags.optIn)
         if (!languageVersionSettings.supportsFeature(LanguageFeature.OptInRelease) &&
             OptInNames.REQUIRES_OPT_IN_FQ_NAME.asString() !in useExperimentalFqNames
         ) {

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirOptInUsageBaseChecker.kt

@@ -209,7 +209,7 @@ object FirOptInUsageBaseChecker {
     ): Boolean {
         val languageVersionSettings = context.session.languageVersionSettings
         val fqNameAsString = annotationClassId.asFqNameString()
-        if (fqNameAsString in languageVersionSettings.getFlag(AnalysisFlags.useExperimental)) {
+        if (fqNameAsString in languageVersionSettings.getFlag(AnalysisFlags.optIn)) {
             return true
         }
         for (annotationContainer in context.annotationContainers) {

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

@@ -284,7 +284,7 @@ class ExperimentalUsageChecker(project: Project) : CallChecker {
             languageVersionSettings: LanguageVersionSettings,
             bindingContext: BindingContext
         ): Boolean =
-            annotationFqName.asString() in languageVersionSettings.getFlag(AnalysisFlags.useExperimental) ||
+            annotationFqName.asString() in languageVersionSettings.getFlag(AnalysisFlags.optIn) ||
                     anyParentMatches { element ->
                         element.isDeclarationAnnotatedWith(annotationFqName, bindingContext) ||
                                 element.isElementAnnotatedWithUseExperimentalOf(annotationFqName, bindingContext)
@@ -358,7 +358,7 @@ class ExperimentalUsageChecker(project: Project) : CallChecker {
                 return true
             }
 
-            languageVersionSettings.getFlag(AnalysisFlags.useExperimental).forEach { fqName ->
+            languageVersionSettings.getFlag(AnalysisFlags.optIn).forEach { fqName ->
                 if (fqName != REQUIRES_OPT_IN_FQ_NAME.asString() && fqName != OLD_EXPERIMENTAL_FQ_NAME.asString()) {
                     checkAnnotation(fqName)
                 }
@@ -411,7 +411,7 @@ class ExperimentalUsageChecker(project: Project) : CallChecker {
         }
 
         private fun checkUsageOfKotlinExperimentalOrUseExperimental(element: PsiElement, context: CheckerContext) {
-            val useExperimentalFqNames = context.languageVersionSettings.getFlag(AnalysisFlags.useExperimental)
+            val useExperimentalFqNames = context.languageVersionSettings.getFlag(AnalysisFlags.optIn)
             if (!context.languageVersionSettings.supportsFeature(LanguageFeature.OptInRelease) &&
                 REQUIRES_OPT_IN_FQ_NAME.asString() !in useExperimentalFqNames &&
                 OLD_EXPERIMENTAL_FQ_NAME.asString() !in useExperimentalFqNames

compiler/test-infrastructure/tests/org/jetbrains/kotlin/test/builders/LanguageVersionSettingsBuilder.kt

@@ -63,7 +63,7 @@ class LanguageVersionSettingsBuilder {
         }
 
         val analysisFlags = listOfNotNull(
-            analysisFlag(AnalysisFlags.useExperimental, directives[LanguageSettingsDirectives.OPT_IN].takeIf { it.isNotEmpty() }),
+            analysisFlag(AnalysisFlags.optIn, directives[LanguageSettingsDirectives.OPT_IN].takeIf { it.isNotEmpty() }),
             analysisFlag(AnalysisFlags.ignoreDataFlowInAssert, trueOrNull(LanguageSettingsDirectives.IGNORE_DATA_FLOW_IN_ASSERT in directives)),
             analysisFlag(AnalysisFlags.constraintSystemForOverloadResolution, directives.singleOrZeroValue(LanguageSettingsDirectives.CONSTRAINT_SYSTEM_FOR_OVERLOAD_RESOLUTION)),
             analysisFlag(AnalysisFlags.allowResultReturnType, trueOrNull(LanguageSettingsDirectives.ALLOW_RESULT_RETURN_TYPE in directives)),

compiler/test-infrastructure/tests/org/jetbrains/kotlin/test/directives/LanguageSettingsDirectives.kt

@@ -28,7 +28,7 @@ object LanguageSettingsDirectives : SimpleDirectivesContainer() {
     // --------------------- Analysis Flags ---------------------
 
     val OPT_IN by stringDirective(
-        description = "List of opted in annotations (AnalysisFlags.useExperimental)"
+        description = "List of opted in annotations (AnalysisFlags.optIn)"
     )
 
     val IGNORE_DATA_FLOW_IN_ASSERT by directive(

compiler/tests-common/tests/org/jetbrains/kotlin/checkers/CompilerTestLanguageVersionSettings.kt

@@ -59,7 +59,7 @@ fun parseLanguageVersionSettings(directives: Directives): CompilerTestLanguageVe
     val languageFeaturesString = directives[LANGUAGE_DIRECTIVE]
 
     val analysisFlags = listOfNotNull(
-        analysisFlag(AnalysisFlags.useExperimental, directives[OPT_IN_DIRECTIVE]?.split(' ')),
+        analysisFlag(AnalysisFlags.optIn, directives[OPT_IN_DIRECTIVE]?.split(' ')),
         analysisFlag(JvmAnalysisFlags.jvmDefaultMode, directives[JVM_DEFAULT_MODE]?.let { JvmDefaultMode.fromStringOrNull(it) }),
         analysisFlag(AnalysisFlags.ignoreDataFlowInAssert, if (IGNORE_DATA_FLOW_IN_ASSERT_DIRECTIVE in directives) true else null),
         analysisFlag(AnalysisFlags.skipMetadataVersionCheck, if (SKIP_METADATA_VERSION_CHECK in directives) true else null),

js/js.tests/test/org/jetbrains/kotlin/benchmarks/GenerateIrRuntime.kt

@@ -88,7 +88,7 @@ class GenerateIrRuntime {
                 LanguageFeature.MultiPlatformProjects to LanguageFeature.State.ENABLED
             ),
             analysisFlags = mapOf(
-                AnalysisFlags.useExperimental to listOf(
+                AnalysisFlags.optIn to listOf(
                     "kotlin.contracts.ExperimentalContracts",
                     "kotlin.Experimental",
                     "kotlin.ExperimentalMultiplatform"

kotlin-native/backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.kt

@@ -353,8 +353,8 @@ class K2NativeCompilerArguments : CommonCompilerArguments() {
 
     override fun configureAnalysisFlags(collector: MessageCollector, languageVersion: LanguageVersion): MutableMap<AnalysisFlag<*>, Any> =
             super.configureAnalysisFlags(collector, languageVersion).also {
-                val useExperimental = it[AnalysisFlags.useExperimental] as List<*>
-                it[AnalysisFlags.useExperimental] = useExperimental + listOf("kotlin.ExperimentalUnsignedTypes")
+                val optInList = it[AnalysisFlags.optIn] as List<*>
+                it[AnalysisFlags.optIn] = optInList + listOf("kotlin.ExperimentalUnsignedTypes")
                 if (printIr)
                     phasesToDumpAfter = arrayOf("ALL")
             }