Implement unionTypeAttributes and replaceTypeAttributes in ConeInferenceContext

compiler/cli/cli-common/resources/META-INF/extensions/compiler.xml

@@ -11,8 +11,8 @@
         <extensionPoint qualifiedName="org.jetbrains.kotlin.extensions.internal.typeResolutionInterceptorExtension"
                         interface="org.jetbrains.kotlin.extensions.internal.TypeResolutionInterceptorExtension"
                         area="IDEA_PROJECT"/>
-        <extensionPoint qualifiedName="org.jetbrains.kotlin.extensions.TypeAttributeTranslatorExtension"
+        <extensionPoint qualifiedName="org.jetbrains.kotlin.types.extensions.TypeAttributeTranslatorExtension"
-                        interface="org.jetbrains.kotlin.extensions.TypeAttributeTranslatorExtension"
+                        interface="org.jetbrains.kotlin.types.extensions.TypeAttributeTranslatorExtension"
                         area="IDEA_PROJECT"/>
         <extensionPoint qualifiedName="org.jetbrains.kotlin.diagnosticSuppressor"
                         interface="org.jetbrains.kotlin.resolve.diagnostics.DiagnosticSuppressor"

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -103,6 +103,7 @@ import org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleResolver
 import org.jetbrains.kotlin.resolve.lazy.declarations.CliDeclarationProviderFactoryService
 import org.jetbrains.kotlin.resolve.lazy.declarations.DeclarationProviderFactoryService
 import org.jetbrains.kotlin.serialization.DescriptorSerializerPlugin
+import org.jetbrains.kotlin.types.extensions.TypeAttributeTranslators
 import org.jetbrains.kotlin.utils.PathUtil
 import java.io.File
 import java.nio.file.FileSystems

compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/ConeInferenceContext.kt

@@ -400,6 +400,20 @@ interface ConeInferenceContext : TypeSystemInferenceExtensionContext, ConeTypeCo
         return ConeIntegerLiteralTypeImpl.findCommonSuperType(explicitSupertypes)
     }
 
+    override fun unionTypeAttributes(types: List<KotlinTypeMarker>): List<AnnotationMarker> {
+        @Suppress("UNCHECKED_CAST")
+        types as List<ConeKotlinType>
+        return types.map { it.attributes }.reduce { x, y -> x.union(y) }.toList()
+    }
+
+    override fun KotlinTypeMarker.replaceTypeAttributes(newAttributes: List<AnnotationMarker>): KotlinTypeMarker {
+        require(this is ConeKotlinType)
+        val typeAttributes = newAttributes.filterIsInstance<ConeAttribute<*>>()
+        require(typeAttributes.size == newAttributes.size)
+        if (newAttributes.isEmpty()) return this
+        return createSimpleType(this.typeConstructor(), this.getArguments(), this.isNullable, this.isExtensionFunctionType, typeAttributes)
+    }
+
     override fun TypeConstructorMarker.getApproximatedIntegerLiteralType(): KotlinTypeMarker {
         require(this is ConeIntegerLiteralType)
         return this.getApproximatedType()

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

@@ -28,7 +28,7 @@ import org.jetbrains.kotlin.descriptors.annotations.composeAnnotations
 import org.jetbrains.kotlin.descriptors.impl.VariableDescriptorImpl
 import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.diagnostics.Errors.*
-import org.jetbrains.kotlin.extensions.TypeAttributeTranslators
+import org.jetbrains.kotlin.types.extensions.TypeAttributeTranslators
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.*

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/IrTypeSystemContext.kt

@@ -383,6 +383,10 @@ interface IrTypeSystemContext : TypeSystemContext, TypeSystemCommonSuperTypesCon
     override fun findCommonIntegerLiteralTypesSuperType(explicitSupertypes: List<SimpleTypeMarker>): SimpleTypeMarker? =
         irBuiltIns.intType as IrSimpleType
 
+    override fun KotlinTypeMarker.replaceTypeAttributes(newAttributes: List<AnnotationMarker>): KotlinTypeMarker = this
+
+    override fun unionTypeAttributes(types: List<KotlinTypeMarker>): List<AnnotationMarker> = emptyList()
+
     override fun KotlinTypeMarker.isNullableType(): Boolean =
         this is IrType && isNullable()
 

core/compiler.common/src/org/jetbrains/kotlin/types/model/TypeSystemContext.kt

@@ -134,9 +134,9 @@ interface TypeSystemCommonSuperTypesContext : TypeSystemContext, TypeSystemTypeF
      */
     fun TypeConstructorMarker.toErrorType(): SimpleTypeMarker
 
-    fun unionTypeAttributes(types: List<KotlinTypeMarker>): List<AnnotationMarker> = emptyList()
+    fun unionTypeAttributes(types: List<KotlinTypeMarker>): List<AnnotationMarker>
 
-    fun KotlinTypeMarker.replaceTypeAttributes(newAttributes: List<AnnotationMarker>): KotlinTypeMarker = this
+    fun KotlinTypeMarker.replaceTypeAttributes(newAttributes: List<AnnotationMarker>): KotlinTypeMarker
 }
 
 // This interface is only used to declare that implementing class is supposed to be used as a TypeSystemInferenceExtensionContext component

core/descriptors/build.gradle.kts

@@ -10,6 +10,8 @@ dependencies {
     api(project(":core:util.runtime"))
     api(kotlinStdlib())
     api(project(":kotlin-annotations-jvm"))
+    api(project(":compiler:util"))
+    compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
 }
 
 sourceSets {

core/descriptors/src/org/jetbrains/kotlin/types/TypeAttributesTranslator.kt

@@ -9,7 +9,7 @@ import org.jetbrains.kotlin.descriptors.annotations.Annotations
 
 interface TypeAttributesTranslator {
     fun toAttributes(annotations: Annotations): TypeAttributes
-    fun toAnnotations(attributes: TypeAttributes): Annotations?
+    fun toAnnotations(attributes: TypeAttributes): Annotations
 }
 
 object DefaultTypeAttributesTranslator : TypeAttributesTranslator {

core/descriptors/src/org/jetbrains/kotlin/types/extensions/TypeAttributeTranslators.kt

@@ -3,10 +3,11 @@
  * 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.extensions
+package org.jetbrains.kotlin.types.extensions
 
 import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
+import org.jetbrains.kotlin.extensions.ProjectExtensionDescriptor
 import org.jetbrains.kotlin.types.*
 
 interface TypeAttributeTranslatorExtension : TypeAttributesTranslator
@@ -16,14 +17,14 @@ class TypeAttributeTranslators(project: Project) {
         getInstances(project) + DefaultTypeAttributesTranslator
 
     fun toAttributes(annotations: Annotations): TypeAttributes {
-        val translated = translators.mapNotNull { translator ->
+        val translated = translators.map { translator ->
             translator.toAttributes(annotations)
         }.flatten()
         return TypeAttributes.create(translated)
     }
 
     fun toAnnotations(attributes: TypeAttributes): Annotations {
-        val translated = translators.mapNotNull { translator ->
+        val translated = translators.map { translator ->
             translator.toAnnotations(attributes)
         }.flatten()
         return Annotations.create(translated)