Drop type aliases for JS and KLIB string tables

They used to use the same approximation logic anyway
^KT-20996

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

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
+import org.jetbrains.kotlin.serialization.ApproximatingStringTable
 import org.jetbrains.kotlin.serialization.DescriptorSerializer
 import org.jetbrains.kotlin.serialization.StringTableImpl
 import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedClassDescriptor
@@ -51,7 +52,7 @@ abstract class KlibMetadataSerializer(
         val extension = KlibMetadataSerializerExtension(
             languageVersionSettings,
             metadataVersion,
-            KlibMetadataStringTable(),
+            ApproximatingStringTable(),
             allowErrorTypes
         )
         return SerializerContext(

compiler/util-klib-metadata/src/org/jetbrains/kotlin/library/metadata/KlibMetadataStringTable.kt

@@ -1,10 +0,0 @@
-/*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.backend.common.serialization.metadata
-
-import org.jetbrains.kotlin.serialization.ApproximatingStringTable
-
-typealias KlibMetadataStringTable = ApproximatingStringTable

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

@@ -1,21 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.serialization.js
-
-import org.jetbrains.kotlin.serialization.ApproximatingStringTable
-
-typealias JavaScriptStringTable = ApproximatingStringTable

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

@@ -26,6 +26,7 @@ import org.jetbrains.kotlin.metadata.serialization.MutableVersionRequirementTabl
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.source.PsiSourceFile
+import org.jetbrains.kotlin.serialization.ApproximatingStringTable
 import org.jetbrains.kotlin.serialization.DescriptorSerializer
 import org.jetbrains.kotlin.serialization.KotlinSerializerExtensionBase
 import org.jetbrains.kotlin.types.FlexibleType
@@ -35,7 +36,7 @@ class KotlinJavascriptSerializerExtension(
     private val languageVersionSettings: LanguageVersionSettings,
     override val metadataVersion: BinaryVersion
 ) : KotlinSerializerExtensionBase(JsSerializerProtocol) {
-    override val stringTable = JavaScriptStringTable()
+    override val stringTable = ApproximatingStringTable()
 
     override fun serializeFlexibleType(flexibleType: FlexibleType, lowerProto: ProtoBuf.Type.Builder, upperProto: ProtoBuf.Type.Builder) {
         lowerProto.flexibleTypeCapabilitiesId = stringTable.getStringIndex(DynamicTypeDeserializer.id)

libraries/kotlinx-metadata/klib/src/kotlinx/metadata/klib/KlibModuleMetadata.kt

@@ -10,11 +10,11 @@ import kotlinx.metadata.KmModuleFragment
 import kotlinx.metadata.impl.WriteContext
 import kotlinx.metadata.impl.accept
 import kotlinx.metadata.klib.impl.*
-import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataStringTable
 import org.jetbrains.kotlin.library.metadata.parseModuleHeader
 import org.jetbrains.kotlin.library.metadata.parsePackageFragment
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.deserialization.NameResolverImpl
+import org.jetbrains.kotlin.serialization.ApproximatingStringTable
 
 /**
  * Allows to modify the way fragments of the single package are read by [KlibModuleMetadata.read].
@@ -120,12 +120,12 @@ class KlibModuleMetadata(
         )
         val groupedProtos = groupedFragments.mapValues { (_, fragments) ->
             fragments.map {
-                val c = WriteContext(KlibMetadataStringTable(), listOf(reverseIndex))
-                KlibModuleFragmentWriter(c.strings as KlibMetadataStringTable, c.contextExtensions).also(it::accept).write()
+                val c = WriteContext(ApproximatingStringTable(), listOf(reverseIndex))
+                KlibModuleFragmentWriter(c.strings as ApproximatingStringTable, c.contextExtensions).also(it::accept).write()
             }
         }
         // This context and string table is only required for module-level annotations.
-        val c = WriteContext(KlibMetadataStringTable(), listOf(reverseIndex))
+        val c = WriteContext(ApproximatingStringTable(), listOf(reverseIndex))
         return SerializedKlibMetadata(
             header.writeHeader(c).build().toByteArray(),
             groupedProtos.map { it.value.map(ProtoBuf.PackageFragment::toByteArray) },

libraries/kotlinx-metadata/klib/src/kotlinx/metadata/klib/impl/klibWriters.kt

@@ -7,9 +7,9 @@ package kotlinx.metadata.klib.impl
 
 import kotlinx.metadata.impl.*
 import kotlinx.metadata.klib.KlibSourceFile
-import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataStringTable
 import org.jetbrains.kotlin.library.metadata.KlibMetadataProtoBuf
 import org.jetbrains.kotlin.metadata.ProtoBuf
+import org.jetbrains.kotlin.serialization.ApproximatingStringTable
 
 class ReverseSourceFileIndexWriteExtension : WriteContextExtension {
     private val filesReverseIndex = mutableMapOf<KlibSourceFile, Int>()
@@ -26,7 +26,7 @@ class ReverseSourceFileIndexWriteExtension : WriteContextExtension {
 }
 
 class KlibModuleFragmentWriter(
-    stringTable: KlibMetadataStringTable,
+    stringTable: ApproximatingStringTable,
     contextExtensions: List<WriteContextExtension> = emptyList()
 ) : ModuleFragmentWriter(stringTable, contextExtensions) {
 
@@ -36,7 +36,7 @@ class KlibModuleFragmentWriter(
     override fun visitEnd() {
 
         // TODO: This should be moved to ModuleFragmentWriter.
-        val (strings, qualifiedNames) = (c.strings as KlibMetadataStringTable).buildProto()
+        val (strings, qualifiedNames) = (c.strings as ApproximatingStringTable).buildProto()
         t.strings = strings
         t.qualifiedNames = qualifiedNames