Extract shouldWritePreReleaseFlag(), use in JS as well as JVM

Fix the difference in behavior between JS and JVM

compiler/backend/src/org/jetbrains/kotlin/codegen/writeAnnotationUtil.kt

@@ -17,8 +17,7 @@
 package org.jetbrains.kotlin.codegen
 
 import org.jetbrains.kotlin.codegen.state.GenerationState
-import org.jetbrains.kotlin.config.KotlinCompilerVersion
-import org.jetbrains.kotlin.config.LanguageVersion
+import org.jetbrains.kotlin.config.shouldWritePreReleaseFlag
 import org.jetbrains.kotlin.load.java.JvmAnnotationNames
 import org.jetbrains.kotlin.load.java.JvmBytecodeBinaryVersion
 import org.jetbrains.kotlin.load.kotlin.JvmMetadataVersion
@@ -37,9 +36,7 @@ fun writeKotlinMetadata(
     av.visit(JvmAnnotationNames.BYTECODE_VERSION_FIELD_NAME, JvmBytecodeBinaryVersion.INSTANCE.toArray())
     av.visit(JvmAnnotationNames.KIND_FIELD_NAME, kind.id)
     var flags = extraFlags
-    val languageVersion = state.languageVersionSettings.languageVersion
-    if (KotlinCompilerVersion.isPreRelease() && languageVersion == LanguageVersion.LATEST_STABLE ||
-        !languageVersion.isStable) {
+    if (state.languageVersionSettings.shouldWritePreReleaseFlag()) {
         flags = flags or JvmAnnotationNames.METADATA_PRE_RELEASE_FLAG
     }
     if (flags != 0) {
@@ -53,4 +50,4 @@ fun writeSyntheticClassMetadata(cb: ClassBuilder, state: GenerationState) {
     writeKotlinMetadata(cb, state, KotlinClassHeader.Kind.SYNTHETIC_CLASS, 0) { _ ->
         // Do nothing
     }
-}
+}

compiler/tests/org/jetbrains/kotlin/serialization/js/KotlinJavascriptSerializerTest.kt

@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.cli.jvm.compiler.EnvironmentConfigFiles
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.addKotlinSourceRoots
+import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.js.analyze.TopDownAnalyzerFacadeForJS
@@ -78,7 +79,9 @@ class KotlinJavascriptSerializerTest : TestCaseWithTmpdir() {
                     imported = listOf(),
                     data = analysisResult.moduleDescriptor
             )
-            FileUtil.writeToFile(metaFile, KotlinJavascriptSerializationUtil.metadataAsString(analysisResult.bindingContext, description))
+            FileUtil.writeToFile(metaFile, KotlinJavascriptSerializationUtil.metadataAsString(
+                    analysisResult.bindingContext, description, configuration.languageVersionSettings
+            ))
         }
         finally {
             Disposer.dispose(rootDisposable)

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

@@ -184,3 +184,9 @@ class LanguageVersionSettingsImpl @JvmOverloads constructor(
         val DEFAULT = LanguageVersionSettingsImpl(LanguageVersion.LATEST_STABLE, ApiVersion.LATEST_STABLE)
     }
 }
+
+fun LanguageVersionSettings.shouldWritePreReleaseFlag(): Boolean {
+    if (!languageVersion.isStable) return true
+
+    return KotlinCompilerVersion.isPreRelease() && languageVersion == LanguageVersion.LATEST_STABLE
+}

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptSerializationUtil.kt

@@ -16,7 +16,8 @@
 
 package org.jetbrains.kotlin.serialization.js
 
-import org.jetbrains.kotlin.config.KotlinCompilerVersion
+import org.jetbrains.kotlin.config.LanguageVersionSettings
+import org.jetbrains.kotlin.config.shouldWritePreReleaseFlag
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.name.FqName
@@ -116,10 +117,16 @@ object KotlinJavascriptSerializationUtil {
         return builder.build()
     }
 
-    fun metadataAsString(bindingContext: BindingContext, jsDescriptor: JsModuleDescriptor<ModuleDescriptor>): String =
-            KotlinJavascriptMetadataUtils.formatMetadataAsString(jsDescriptor.name, jsDescriptor.serializeToBinaryMetadata(bindingContext))
+    fun metadataAsString(
+            bindingContext: BindingContext,
+            jsDescriptor: JsModuleDescriptor<ModuleDescriptor>,
+            languageVersionSettings: LanguageVersionSettings
+    ): String = KotlinJavascriptMetadataUtils.formatMetadataAsString(
+            jsDescriptor.name,
+            jsDescriptor.serializeToBinaryMetadata(bindingContext, languageVersionSettings)
+    )
 
-    fun serializePackageFragment(bindingContext: BindingContext, module: ModuleDescriptor, fqName: FqName): ProtoBuf.PackageFragment {
+    private fun serializePackageFragment(bindingContext: BindingContext, module: ModuleDescriptor, fqName: FqName): ProtoBuf.PackageFragment {
         val packageView = module.getPackage(fqName)
         return serializeDescriptors(bindingContext, module, packageView.memberScope.getContributedDescriptors(), fqName)
     }
@@ -200,7 +207,11 @@ object KotlinJavascriptSerializationUtil {
         return filesProto.build()
     }
 
-    fun toContentMap(bindingContext: BindingContext, module: ModuleDescriptor): Map<String, ByteArray> {
+    fun toContentMap(
+            bindingContext: BindingContext,
+            module: ModuleDescriptor,
+            languageVersionSettings: LanguageVersionSettings
+    ): Map<String, ByteArray> {
         val contentMap = hashMapOf<String, ByteArray>()
 
         for (fqName in getPackagesFqNames(module)) {
@@ -216,7 +227,7 @@ object KotlinJavascriptSerializationUtil {
                 version.forEach(this::writeInt)
             }
 
-            serializeHeader(fqName).writeDelimitedTo(stream)
+            serializeHeader(fqName, languageVersionSettings).writeDelimitedTo(stream)
             part.writeTo(stream)
 
             contentMap[JsSerializerProtocol.getKjsmFilePath(fqName)] = stream.toByteArray()
@@ -225,14 +236,14 @@ object KotlinJavascriptSerializationUtil {
         return contentMap
     }
 
-    fun serializeHeader(packageFqName: FqName?): JsProtoBuf.Header {
+    fun serializeHeader(packageFqName: FqName?, languageVersionSettings: LanguageVersionSettings): JsProtoBuf.Header {
         val header = JsProtoBuf.Header.newBuilder()
 
         if (packageFqName != null) {
             header.packageFqName = packageFqName.asString()
         }
 
-        if (KotlinCompilerVersion.isPreRelease()) {
+        if (languageVersionSettings.shouldWritePreReleaseFlag()) {
             header.flags = 1
         }
 
@@ -261,10 +272,13 @@ object KotlinJavascriptSerializationUtil {
         }
     }
 
-    private fun JsModuleDescriptor<ModuleDescriptor>.serializeToBinaryMetadata(bindingContext: BindingContext): ByteArray {
+    private fun JsModuleDescriptor<ModuleDescriptor>.serializeToBinaryMetadata(
+            bindingContext: BindingContext,
+            languageVersionSettings: LanguageVersionSettings
+    ): ByteArray {
         return ByteArrayOutputStream().apply {
             GZIPOutputStream(this).use { stream ->
-                serializeHeader(null).writeDelimitedTo(stream)
+                serializeHeader(null, languageVersionSettings).writeDelimitedTo(stream)
                 serializeMetadata(bindingContext, data, kind, imported).writeTo(stream)
             }
         }.toByteArray()

js/js.translator/src/org/jetbrains/kotlin/js/facade/K2JSTranslator.java

@@ -19,8 +19,11 @@ package org.jetbrains.kotlin.js.facade;
 import com.intellij.openapi.vfs.VfsUtilCore;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.config.CommonConfigurationKeysKt;
+import org.jetbrains.kotlin.config.LanguageVersionSettings;
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor;
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor;
+import org.jetbrains.kotlin.incremental.js.IncrementalResultsConsumer;
 import org.jetbrains.kotlin.js.analyze.TopDownAnalyzerFacadeForJS;
 import org.jetbrains.kotlin.js.analyzer.JsAnalysisResult;
 import org.jetbrains.kotlin.js.backend.ast.JsImportedModule;
@@ -29,7 +32,6 @@ import org.jetbrains.kotlin.js.config.JSConfigurationKeys;
 import org.jetbrains.kotlin.js.config.JsConfig;
 import org.jetbrains.kotlin.js.coroutine.CoroutineTransformer;
 import org.jetbrains.kotlin.js.facade.exceptions.TranslationException;
-import org.jetbrains.kotlin.incremental.js.IncrementalResultsConsumer;
 import org.jetbrains.kotlin.js.inline.JsInliner;
 import org.jetbrains.kotlin.js.inline.clean.LabeledBlockToDoWhileTransformation;
 import org.jetbrains.kotlin.js.inline.clean.RemoveDuplicateImportsKt;
@@ -52,7 +54,6 @@ import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
 
 import static org.jetbrains.kotlin.diagnostics.DiagnosticUtils.hasError;
 
@@ -182,7 +183,8 @@ public final class K2JSTranslator {
                 incrementalResults.processPackagePart(ioFile, packagePart.toByteArray(), binaryAst);
             }
 
-            incrementalResults.processHeader(serializationUtil.serializeHeader(null).toByteArray());
+            LanguageVersionSettings settings = CommonConfigurationKeysKt.getLanguageVersionSettings(config.getConfiguration());
+            incrementalResults.processHeader(serializationUtil.serializeHeader(null, settings).toByteArray());
         }
 
         RemoveDuplicateImportsKt.removeDuplicateImports(translationResult.getProgram());

js/js.translator/src/org/jetbrains/kotlin/js/facade/TranslationResult.kt

@@ -19,16 +19,17 @@ package org.jetbrains.kotlin.js.facade
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.openapi.vfs.VfsUtilCore
 import org.jetbrains.kotlin.backend.common.output.*
+import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.js.backend.JsToStringGenerationVisitor
 import org.jetbrains.kotlin.js.backend.NoOpSourceLocationConsumer
+import org.jetbrains.kotlin.js.backend.SourceLocationConsumer
 import org.jetbrains.kotlin.js.backend.ast.JsProgram
 import org.jetbrains.kotlin.js.config.JSConfigurationKeys
 import org.jetbrains.kotlin.js.config.JsConfig
 import org.jetbrains.kotlin.js.config.SourceMapSourceEmbedding
 import org.jetbrains.kotlin.js.sourceMap.SourceFilePathResolver
 import org.jetbrains.kotlin.js.sourceMap.SourceMap3Builder
-import org.jetbrains.kotlin.js.backend.SourceLocationConsumer
 import org.jetbrains.kotlin.js.util.TextOutput
 import org.jetbrains.kotlin.js.util.TextOutputImpl
 import org.jetbrains.kotlin.psi.KtFile
@@ -105,12 +106,13 @@ abstract class TranslationResult protected constructor(val diagnostics: Diagnost
                     kind = config.moduleKind,
                     imported = importedModules
                 )
-                val metaFileContent = KotlinJavascriptSerializationUtil.metadataAsString(bindingContext, moduleDescription)
+                val settings = config.configuration.languageVersionSettings
+                val metaFileContent = KotlinJavascriptSerializationUtil.metadataAsString(bindingContext, moduleDescription, settings)
                 val sourceFilesForMetaFile = ArrayList(sourceFiles)
                 val jsMetaFile = SimpleOutputFile(sourceFilesForMetaFile, metaFileName, metaFileContent)
                 outputFiles.add(jsMetaFile)
 
-                KotlinJavascriptSerializationUtil.toContentMap(bindingContext, moduleDescriptor).forEach {
+                KotlinJavascriptSerializationUtil.toContentMap(bindingContext, moduleDescriptor, settings).forEach {
                     // TODO Add correct source files
                     outputFiles.add(SimpleOutputBinaryFile(emptyList(), config.moduleId + VfsUtilCore.VFS_SEPARATOR_CHAR + it.key, it.value))
                 }