[IR generator] Factor out TypeRef to common module

This is a step towards commonizing the code generator between
FIR and IR: KT-61970

compiler/ir/ir.tree/tree-generator/build.gradle.kts

@@ -11,7 +11,6 @@ runtimeOnly.extendsFrom(compileOnly)
 dependencies {
     implementation(project(":generators"))
     implementation(project(":generators:tree-generator-common"))
-    implementation(project(":core:compiler.common"))
     implementation(project(":compiler:util"))
     implementation("com.squareup:kotlinpoet:1.11.0")
 

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/CommonTypes.kt

@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.ir.generator.Packages.symbols
 import org.jetbrains.kotlin.ir.generator.Packages.tree
 import org.jetbrains.kotlin.ir.generator.Packages.types
 import org.jetbrains.kotlin.ir.generator.Packages.visitors
-import org.jetbrains.kotlin.ir.generator.util.type
+import org.jetbrains.kotlin.generators.tree.type
 
 object Packages {
     const val tree = "org.jetbrains.kotlin.ir"

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt

@@ -10,7 +10,7 @@ import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.SourceElement
 import org.jetbrains.kotlin.descriptors.ValueClassRepresentation
-import org.jetbrains.kotlin.generators.tree.TypeKind
+import org.jetbrains.kotlin.generators.tree.*
 import org.jetbrains.kotlin.ir.generator.config.AbstractTreeBuilder
 import org.jetbrains.kotlin.ir.generator.config.ElementConfig
 import org.jetbrains.kotlin.ir.generator.config.ElementConfig.Category.*

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/config/AbstractTreeBuilder.kt

@@ -5,9 +5,9 @@
 
 package org.jetbrains.kotlin.ir.generator.config
 
-import org.jetbrains.kotlin.ir.generator.util.TypeRef
-import org.jetbrains.kotlin.ir.generator.util.TypeVariable
-import org.jetbrains.kotlin.ir.generator.util.type
+import org.jetbrains.kotlin.generators.tree.TypeRef
+import org.jetbrains.kotlin.generators.tree.TypeVariable
+import org.jetbrains.kotlin.generators.tree.type
 import org.jetbrains.kotlin.types.Variance
 import kotlin.properties.PropertyDelegateProvider
 import kotlin.properties.ReadOnlyProperty

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/config/ConfigModel.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.ir.generator.config
 import com.squareup.kotlinpoet.CodeBlock
 import com.squareup.kotlinpoet.PropertySpec
 import com.squareup.kotlinpoet.TypeSpec
-import org.jetbrains.kotlin.generators.tree.TypeKind
+import org.jetbrains.kotlin.generators.tree.*
 import org.jetbrains.kotlin.ir.generator.BASE_PACKAGE
 import org.jetbrains.kotlin.ir.generator.util.*
 

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/model/Model.kt

@@ -6,7 +6,7 @@
 package org.jetbrains.kotlin.ir.generator.model
 
 import com.squareup.kotlinpoet.CodeBlock
-import org.jetbrains.kotlin.generators.tree.ImplementationKind
+import org.jetbrains.kotlin.generators.tree.*
 import org.jetbrains.kotlin.ir.generator.config.ElementConfig
 import org.jetbrains.kotlin.ir.generator.config.FieldConfig
 import org.jetbrains.kotlin.ir.generator.util.*

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/model/Transformations.kt

@@ -5,10 +5,9 @@
 
 package org.jetbrains.kotlin.ir.generator.model
 
-import org.jetbrains.kotlin.generators.tree.TypeKind
+import org.jetbrains.kotlin.generators.tree.*
 import org.jetbrains.kotlin.ir.generator.config.*
 import org.jetbrains.kotlin.ir.generator.elementBaseType
-import org.jetbrains.kotlin.ir.generator.util.*
 import org.jetbrains.kotlin.utils.addToStdlib.UnsafeCastFunction
 import org.jetbrains.kotlin.utils.addToStdlib.castAll
 import org.jetbrains.kotlin.utils.addToStdlib.partitionIsInstance

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/print/Elements.kt

@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.ir.generator.BASE_PACKAGE
 import org.jetbrains.kotlin.ir.generator.elementTransformerType
 import org.jetbrains.kotlin.ir.generator.elementVisitorType
 import org.jetbrains.kotlin.ir.generator.model.*
-import org.jetbrains.kotlin.ir.generator.util.TypeRefWithNullability
+import org.jetbrains.kotlin.generators.tree.TypeRefWithNullability
 import org.jetbrains.kotlin.ir.generator.util.tryParameterizedBy
 import java.io.File
 

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/print/Factory.kt

@@ -13,7 +13,7 @@ import org.jetbrains.kotlin.ir.generator.model.Model
 import org.jetbrains.kotlin.ir.generator.util.GeneratedFile
 import org.jetbrains.kotlin.ir.generator.util.parameterizedByIfAny
 import org.jetbrains.kotlin.ir.generator.util.tryParameterizedBy
-import org.jetbrains.kotlin.ir.generator.util.type
+import org.jetbrains.kotlin.generators.tree.type
 import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeAsciiOnly
 import org.jetbrains.kotlin.utils.addToStdlib.applyIf
 import java.io.File

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/print/Types.kt

@@ -6,7 +6,7 @@
 package org.jetbrains.kotlin.ir.generator.print
 
 import com.squareup.kotlinpoet.*
-import org.jetbrains.kotlin.generators.tree.TypeKind
+import org.jetbrains.kotlin.generators.tree.*
 import org.jetbrains.kotlin.ir.generator.config.ElementConfigOrRef
 import org.jetbrains.kotlin.ir.generator.model.Element
 import org.jetbrains.kotlin.ir.generator.model.Element.Companion.elementName2typeName

generators/tree-generator-common/build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 }
 
 dependencies {
-    implementation(project(":core:compiler.common"))
+    api(project(":core:compiler.common"))
 }
 
 sourceSets {

generators/tree-generator-common/src/org/jetbrains/kotlin/generators/tree/TypeRef.kt

@@ -1,12 +1,10 @@
 /*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 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.ir.generator.util
+package org.jetbrains.kotlin.generators.tree
 
-import com.squareup.kotlinpoet.asClassName
-import org.jetbrains.kotlin.generators.tree.TypeKind
 import org.jetbrains.kotlin.types.Variance
 import java.util.*
 import kotlin.reflect.KClass
@@ -110,9 +108,13 @@ class TypeVariable(
 ) : NamedTypeParameterRef(name)
 
 fun <P : TypeParameterRef> KClass<*>.asRef(): ClassRef<P> {
-    val poet = this.asClassName()
-    val kind = if (this.java.isInterface) TypeKind.Interface else TypeKind.Class
-    return ClassRef(kind, poet.packageName, *poet.simpleNames.toTypedArray())
+    val qualifiedName = this.qualifiedName ?: error("$this doesn't have qualified name and thus cannot be converted to ClassRef")
+    val kind = if (java.isInterface) TypeKind.Interface else TypeKind.Class
+    val parts = qualifiedName.split('.')
+    val indexWhereClassNameStarts = parts.indexOfFirst { it.first().isUpperCase() }
+    val packageName = parts.take(indexWhereClassNameStarts).joinToString(separator = ".")
+    val simpleNames = parts.drop(indexWhereClassNameStarts)
+    return ClassRef(kind, packageName, *simpleNames.toTypedArray())
 }
 
 inline fun <reified T : Any> type() = T::class.asRef<PositionTypeParameterRef>()