[KLIB] Support error code in metadata

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/metadata/KlibMetadataIncrementalSerializer.kt

@@ -23,8 +23,9 @@ import org.jetbrains.kotlin.serialization.DescriptorSerializer
 class KlibMetadataIncrementalSerializer(
     languageVersionSettings: LanguageVersionSettings,
     metadataVersion: BinaryVersion,
-    skipExpects: Boolean
-) : KlibMetadataSerializer(languageVersionSettings, metadataVersion, skipExpects) {
+    skipExpects: Boolean,
+    allowErrorTypes: Boolean = false
+) : KlibMetadataSerializer(languageVersionSettings, metadataVersion, skipExpects, allowErrorTypes = allowErrorTypes) {
 
     fun serializePackageFragment(
         module: ModuleDescriptor,

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/metadata/KlibMetadataMonolithicSerializer.kt

@@ -23,8 +23,9 @@ class KlibMetadataMonolithicSerializer(
     languageVersionSettings: LanguageVersionSettings,
     metadataVersion: BinaryVersion,
     skipExpects: Boolean,
-    includeOnlyModuleContent: Boolean = false
-) : KlibMetadataSerializer(languageVersionSettings, metadataVersion, skipExpects, includeOnlyModuleContent) {
+    includeOnlyModuleContent: Boolean = false,
+    allowErrorTypes: Boolean = false
+) : KlibMetadataSerializer(languageVersionSettings, metadataVersion, skipExpects, includeOnlyModuleContent, allowErrorTypes) {
 
     private fun serializePackageFragment(fqName: FqName, module: ModuleDescriptor): List<ProtoBuf.PackageFragment> {
 

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/metadata/KlibMetadataSerializer.kt

@@ -32,7 +32,8 @@ abstract class KlibMetadataSerializer(
     val languageVersionSettings: LanguageVersionSettings,
     val metadataVersion: BinaryVersion,
     val skipExpects: Boolean = false,
-    val includeOnlyModuleContent: Boolean = false
+    val includeOnlyModuleContent: Boolean = false,
+    private val allowErrorTypes: Boolean
 ) {
 
     lateinit var serializerContext: SerializerContext
@@ -48,7 +49,8 @@ abstract class KlibMetadataSerializer(
         val extension = KlibMetadataSerializerExtension(
             languageVersionSettings,
             metadataVersion,
-            KlibMetadataStringTable()
+            KlibMetadataStringTable(),
+            allowErrorTypes
         )
         return SerializerContext(
             extension,

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/metadata/KlibMetadataSerializerExtension.kt

@@ -17,11 +17,13 @@ import org.jetbrains.kotlin.serialization.DescriptorSerializer
 import org.jetbrains.kotlin.serialization.KotlinSerializerExtensionBase
 import org.jetbrains.kotlin.serialization.StringTableImpl
 import org.jetbrains.kotlin.types.FlexibleType
+import org.jetbrains.kotlin.types.KotlinType
 
 class KlibMetadataSerializerExtension(
     private val languageVersionSettings: LanguageVersionSettings,
     override val metadataVersion: BinaryVersion,
-    override val stringTable: StringTableImpl
+    override val stringTable: StringTableImpl,
+    private val allowErrorTypes: Boolean
 ) : KotlinSerializerExtensionBase(KlibMetadataSerializerProtocol) {
     override fun shouldUseTypeTable(): Boolean = true
 
@@ -34,6 +36,10 @@ class KlibMetadataSerializerExtension(
         lowerProto.flexibleTypeCapabilitiesId = stringTable.getStringIndex(DynamicTypeDeserializer.id)
     }
 
+    override fun serializeErrorType(type: KotlinType, builder: ProtoBuf.Type.Builder) {
+        if (!allowErrorTypes) super.serializeErrorType(type, builder)
+    }
+
     override fun serializeClass(
         descriptor: ClassDescriptor,
         proto: ProtoBuf.Class.Builder,