[interop] Move GenerationMode to StubIrContext

Knowing GenerationMode allows us to decide what elements of StubIr we want to emit.
For example, it is required for enums, because a lot of information will be passed
via annotations in metadata mode.

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/StubIrBuilder.kt

@@ -4,6 +4,7 @@
  */
 package org.jetbrains.kotlin.native.interop.gen
 
+import org.jetbrains.kotlin.native.interop.gen.jvm.GenerationMode
 import org.jetbrains.kotlin.native.interop.gen.jvm.InteropConfiguration
 import org.jetbrains.kotlin.native.interop.gen.jvm.KotlinPlatform
 import org.jetbrains.kotlin.native.interop.indexer.*
@@ -100,6 +101,13 @@ interface StubsBuildingContext {
 
     val platform: KotlinPlatform
 
+    /**
+     * In some cases StubIr should be different for metadata and sourcecode modes.
+     * For example, it is impossible to represent call to superclass constructor in
+     * metadata directly and arguments should be passed via annotations instead.
+     */
+    val generationMode: GenerationMode
+
     fun isStrictEnum(enumDef: EnumDef): Boolean
 
     val macroConstantsByName: Map<String, MacroDef>
@@ -132,6 +140,7 @@ class StubsBuildingContextImpl(
 
     override val configuration: InteropConfiguration = stubIrContext.configuration
     override val platform: KotlinPlatform = stubIrContext.platform
+    override val generationMode: GenerationMode = stubIrContext.generationMode
     val imports: Imports = stubIrContext.imports
     private val nativeIndex: NativeIndex = stubIrContext.nativeIndex
 

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/StubIrDriver.kt

@@ -18,6 +18,7 @@ class StubIrContext(
         val nativeIndex: NativeIndex,
         val imports: Imports,
         val platform: KotlinPlatform,
+        val generationMode: GenerationMode,
         val libName: String
 ) {
     val libraryForCStubs = configuration.library.copy(
@@ -102,7 +103,6 @@ class StubIrDriver(
         private val options: DriverOptions
 ) {
     data class DriverOptions(
-            val mode: GenerationMode,
             val entryPoint: String?,
             val moduleName: String,
             val outCFile: File,
@@ -116,7 +116,7 @@ class StubIrDriver(
     }
 
     fun run(): Result {
-        val (mode, entryPoint, moduleName, outCFile, outKtFile) = options
+        val (entryPoint, moduleName, outCFile, outKtFile) = options
 
         val builderResult = StubIrBuilder(context).build()
         val bridgeBuilderResult = StubIrBridgeBuilder(context, builderResult).build()
@@ -125,7 +125,7 @@ class StubIrDriver(
             emitCFile(context, it, entryPoint, bridgeBuilderResult.nativeBridges)
         }
 
-        return when (mode) {
+        return when (context.generationMode) {
             GenerationMode.SOURCE_CODE -> {
                 emitSourceCode(outKtFile(), builderResult, bridgeBuilderResult)
             }

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/main.kt

@@ -261,7 +261,7 @@ private fun processCLib(args: Array<String>, additionalArgs: Map<String, Any> =
         {}
     }
 
-    val stubIrContext = StubIrContext(logger, configuration, nativeIndex, imports, flavor, libName)
+    val stubIrContext = StubIrContext(logger, configuration, nativeIndex, imports, flavor, mode, libName)
     val stubIrOutput = run {
         val outKtFileCreator = {
             val outKtFileName = fqParts.last() + ".kt"
@@ -270,7 +270,7 @@ private fun processCLib(args: Array<String>, additionalArgs: Map<String, Any> =
             file.parentFile.mkdirs()
             file
         }
-        val driverOptions = StubIrDriver.DriverOptions(mode, entryPoint, moduleName, File(outCFile.absolutePath), outKtFileCreator)
+        val driverOptions = StubIrDriver.DriverOptions(entryPoint, moduleName, File(outCFile.absolutePath), outKtFileCreator)
         val stubIrDriver = StubIrDriver(stubIrContext, driverOptions)
         stubIrDriver.run()
     }