[K/N][IR] Refactored enum builder

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/Context.kt

@@ -30,7 +30,6 @@ import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.declarations.lazy.IrLazyClass
-import org.jetbrains.kotlin.ir.deepCopyWithVariables
 import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.types.IrTypeSystemContext
@@ -61,49 +60,8 @@ internal class NativeMapping : DefaultMapping() {
     val bridges = mutableMapOf<BridgeKey, IrSimpleFunction>()
     val notLoweredInlineFunctions = mutableMapOf<IrFunctionSymbol, IrFunction>()
     val loweredInlineFunctions = mutableMapOf<IrFunction, InlineFunctionOriginInfo>()
-}
-
-/**
- * Offset for synthetic elements created by lowerings and not attributable to other places in the source code.
- */
-
-internal class SpecialDeclarationsFactory(val context: Context) {
-    private val enumSpecialDeclarationsFactory by lazy { EnumSpecialDeclarationsFactory(context) }
-    private val internalLoweredEnums = mutableMapOf<IrClass, InternalLoweredEnum>()
-    private val externalLoweredEnums = mutableMapOf<IrClass, ExternalLoweredEnum>()
-
-    fun getLoweredEnumOrNull(enumClass: IrClass): LoweredEnumAccess? {
-        assert(enumClass.kind == ClassKind.ENUM_CLASS) { "Expected enum class but was: ${enumClass.descriptor}" }
-        return if (!context.llvmModuleSpecification.containsDeclaration(enumClass)) {
-            externalLoweredEnums[enumClass]
-        } else {
-            internalLoweredEnums[enumClass]
-        }
-    }
-
-    fun getLoweredEnum(enumClass: IrClass): LoweredEnumAccess {
-        assert(enumClass.kind == ClassKind.ENUM_CLASS) { "Expected enum class but was: ${enumClass.descriptor}" }
-        return if (!context.llvmModuleSpecification.containsDeclaration(enumClass)) {
-            externalLoweredEnums.getOrPut(enumClass) {
-                enumSpecialDeclarationsFactory.createExternalLoweredEnum(enumClass)
-            }
-        } else {
-            internalLoweredEnums.getOrPut(enumClass) {
-                enumSpecialDeclarationsFactory.createInternalLoweredEnum(enumClass)
-            }
-        }
-    }
-
-    fun getInternalLoweredEnum(enumClass: IrClass): InternalLoweredEnum {
-        assert(enumClass.kind == ClassKind.ENUM_CLASS) { "Expected enum class but was: ${enumClass.descriptor}" }
-        assert(context.llvmModuleSpecification.containsDeclaration(enumClass)) { "Expected enum class from current module." }
-        return internalLoweredEnums.getOrPut(enumClass) {
-            enumSpecialDeclarationsFactory.createInternalLoweredEnum(enumClass)
-        }
-    }
-
-    fun getEnumEntryOrdinal(enumEntry: IrEnumEntry) =
-            enumEntry.parentAsClass.declarations.filterIsInstance<IrEnumEntry>().indexOf(enumEntry)
+    val internalLoweredEnums = mutableMapOf<IrClass, InternalLoweredEnum>()
+    val externalLoweredEnums = mutableMapOf<IrClass, ExternalLoweredEnum>()
 }
 
 internal class Context(config: KonanConfig) : KonanBackendContext(config) {
@@ -140,10 +98,10 @@ internal class Context(config: KonanConfig) : KonanBackendContext(config) {
         builtIns.builtInsModule.getPackage(KonanFqNames.packageName).memberScope.getContributedFunctions("immutableBlobOf").single()
     }
 
-    val specialDeclarationsFactory = SpecialDeclarationsFactory(this)
     val innerClassesSupport by lazy { InnerClassesSupport(mapping, irFactory) }
     val bridgesSupport by lazy { BridgesSupport(mapping, irBuiltIns, irFactory) }
     val inlineFunctionsSupport by lazy { InlineFunctionsSupport(mapping) }
+    val enumsSupport by lazy { EnumsSupport(this) }
 
     open class LazyMember<T>(val initializer: Context.() -> T) {
         operator fun getValue(thisRef: Context, property: KProperty<*>): T = thisRef.getValue(this)

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/EnumSpecialDescriptorsFactory.kt

@@ -31,6 +31,44 @@ import org.jetbrains.kotlin.ir.types.typeWith
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.name.Name
 
+internal class EnumsSupport(private val context: Context) {
+    private val enumSpecialDeclarationsFactory = EnumSpecialDeclarationsFactory(context)
+    private val internalLoweredEnums = context.mapping.internalLoweredEnums
+    private val externalLoweredEnums = context.mapping.externalLoweredEnums
+
+    fun getLoweredEnumOrNull(enumClass: IrClass): LoweredEnumAccess? {
+        require(enumClass.isEnumClass) { "Expected enum class but was: ${enumClass.render()}" }
+        return if (!context.llvmModuleSpecification.containsDeclaration(enumClass)) {
+            externalLoweredEnums[enumClass]
+        } else {
+            internalLoweredEnums[enumClass]
+        }
+    }
+
+    fun getLoweredEnum(enumClass: IrClass): LoweredEnumAccess {
+        require(enumClass.isEnumClass) { "Expected enum class but was: ${enumClass.render()}" }
+        return if (!context.llvmModuleSpecification.containsDeclaration(enumClass)) {
+            externalLoweredEnums.getOrPut(enumClass) {
+                enumSpecialDeclarationsFactory.createExternalLoweredEnum(enumClass)
+            }
+        } else {
+            internalLoweredEnums.getOrPut(enumClass) {
+                enumSpecialDeclarationsFactory.createInternalLoweredEnum(enumClass)
+            }
+        }
+    }
+
+    fun getInternalLoweredEnum(enumClass: IrClass): InternalLoweredEnum {
+        require(enumClass.isEnumClass) { "Expected enum class but was: ${enumClass.render()}" }
+        require(context.llvmModuleSpecification.containsDeclaration(enumClass)) { "Expected enum class from current module." }
+        return internalLoweredEnums.getOrPut(enumClass) {
+            enumSpecialDeclarationsFactory.createInternalLoweredEnum(enumClass)
+        }
+    }
+
+    fun getEnumEntryOrdinal(enumEntry: IrEnumEntry) =
+            enumEntry.parentAsClass.declarations.filterIsInstance<IrEnumEntry>().indexOf(enumEntry)
+}
 
 internal object DECLARATION_ORIGIN_ENUM : IrDeclarationOriginImpl("ENUM")
 

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/CodeGenerator.kt

@@ -1349,7 +1349,7 @@ internal abstract class FunctionGenerationContext(
      */
     fun getEnumEntry(enumEntry: IrEnumEntry, exceptionHandler: ExceptionHandler): LLVMValueRef {
         val enumClass = enumEntry.parentAsClass
-        val loweredEnum = context.specialDeclarationsFactory.getLoweredEnum(enumClass)
+        val loweredEnum = context.enumsSupport.getLoweredEnum(enumClass)
 
         val getterId = loweredEnum.entriesMap[enumEntry.name]!!.getterId
         val values = call(

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/EnumClassLowering.kt

@@ -34,14 +34,14 @@ import org.jetbrains.kotlin.name.Name
 
 private class EnumSyntheticFunctionsBuilder(val context: Context) {
     fun IrBuilderWithScope.enumValues(enumClass: IrClass): IrExpression {
-        val loweredEnum = this@EnumSyntheticFunctionsBuilder.context.specialDeclarationsFactory.getLoweredEnum(enumClass)
+        val loweredEnum = this@EnumSyntheticFunctionsBuilder.context.enumsSupport.getLoweredEnum(enumClass)
         return irCall(genericValuesSymbol, listOf(enumClass.defaultType)).apply {
             putValueArgument(0, loweredEnum.getValuesField(startOffset, endOffset))
         }
     }
 
     fun IrBuilderWithScope.enumValueOf(enumClass: IrClass, value: IrExpression): IrExpression {
-        val loweredEnum = this@EnumSyntheticFunctionsBuilder.context.specialDeclarationsFactory.getLoweredEnum(enumClass)
+        val loweredEnum = this@EnumSyntheticFunctionsBuilder.context.enumsSupport.getLoweredEnum(enumClass)
         return irCall(genericValueOfSymbol, listOf(enumClass.defaultType)).apply {
             putValueArgument(0, value)
             putValueArgument(1, loweredEnum.getValuesField(startOffset, endOffset))
@@ -56,7 +56,7 @@ private class EnumSyntheticFunctionsBuilder(val context: Context) {
 internal class NativeEnumWhenLowering constructor(context: Context) : EnumWhenLowering(context) {
     override fun mapConstEnumEntry(entry: IrEnumEntry): Int {
         val parent = entry.parentAsClass
-        val loweredEnum = (context as Context).specialDeclarationsFactory.getLoweredEnumOrNull(parent)
+        val loweredEnum = (context as Context).enumsSupport.getLoweredEnumOrNull(parent)
                 ?: return super.mapConstEnumEntry(entry)
         return loweredEnum.entriesMap[entry.name]!!.ordinal
     }
@@ -109,7 +109,7 @@ internal class EnumUsageLowering(val context: Context)
     }
 
     private fun IrBuilderWithScope.loadEnumEntry(enumClass: IrClass, name: Name): IrExpression {
-        val loweredEnum = this@EnumUsageLowering.context.specialDeclarationsFactory.getLoweredEnum(enumClass)
+        val loweredEnum = this@EnumUsageLowering.context.enumsSupport.getLoweredEnum(enumClass)
         val getterId = loweredEnum.entriesMap.getValue(name).getterId
         return irCall(loweredEnum.itemGetterSymbol, enumClass.defaultType).apply {
             dispatchReceiver = irCall(loweredEnum.valuesGetter)
@@ -132,7 +132,7 @@ internal class EnumClassLowering(val context: Context) : FileLoweringPass {
     }
 
     private inner class EnumClassTransformer(val irClass: IrClass) {
-        private val loweredEnum = context.specialDeclarationsFactory.getInternalLoweredEnum(irClass)
+        private val loweredEnum = context.enumsSupport.getInternalLoweredEnum(irClass)
         private val enumSyntheticFunctionsBuilder = EnumSyntheticFunctionsBuilder(context)
 
         fun run() {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/EnumConstructorsLowering.kt

@@ -229,7 +229,7 @@ internal class EnumConstructorsLowering(val context: Context) : ClassLoweringPas
 
             override fun transform(enumConstructorCall: IrEnumConstructorCall): IrExpression {
                 val name = enumEntry.name.asString()
-                val ordinal = context.specialDeclarationsFactory.getEnumEntryOrdinal(enumEntry)
+                val ordinal = context.enumsSupport.getEnumEntryOrdinal(enumEntry)
 
                 val startOffset = enumConstructorCall.startOffset
                 val endOffset = enumConstructorCall.endOffset