Compile multiplatform projects with daemon

compiler/compiler-runner/src/org/jetbrains/kotlin/compilerRunner/KotlinCompilerRunner.kt

@@ -47,6 +47,7 @@ interface KotlinLogger {
 abstract class KotlinCompilerRunner<in Env : CompilerEnvironment> {
     protected val K2JVM_COMPILER = "org.jetbrains.kotlin.cli.jvm.K2JVMCompiler"
     protected val K2JS_COMPILER = "org.jetbrains.kotlin.cli.js.K2JSCompiler"
+    protected val K2METADATA_COMPILER = "org.jetbrains.kotlin.cli.metadata.K2MetadataCompiler"
     protected val INTERNAL_ERROR = ExitCode.INTERNAL_ERROR.toString()
 
     protected abstract val log: KotlinLogger
@@ -148,6 +149,7 @@ abstract class KotlinCompilerRunner<in Env : CompilerEnvironment> {
         val targetPlatform = when (compilerClassName) {
             K2JVM_COMPILER -> CompileService.TargetPlatform.JVM
             K2JS_COMPILER -> CompileService.TargetPlatform.JS
+            K2METADATA_COMPILER -> CompileService.TargetPlatform.METADATA
             else -> throw IllegalArgumentException("Unknown compiler type $compilerClassName")
         }
 

compiler/daemon/daemon-common/src/org/jetbrains/kotlin/daemon/common/CompileService.kt

@@ -31,7 +31,8 @@ interface CompileService : Remote {
 
     enum class TargetPlatform : Serializable {
         JVM,
-        JS
+        JS,
+        METADATA
     }
 
     companion object {

compiler/daemon/src/org/jetbrains/kotlin/daemon/KotlinCompileDaemon.kt

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.daemon
 import org.jetbrains.kotlin.cli.common.CLICompiler
 import org.jetbrains.kotlin.cli.js.K2JSCompiler
 import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
+import org.jetbrains.kotlin.cli.metadata.K2MetadataCompiler
 import org.jetbrains.kotlin.daemon.common.*
 import java.io.File
 import java.io.IOException
@@ -125,9 +126,11 @@ object KotlinCompileDaemon {
             val compilerSelector = object : CompilerSelector {
                 private val jvm by lazy { K2JVMCompiler() }
                 private val js by lazy { K2JSCompiler() }
+                private val metadata by lazy { K2MetadataCompiler() }
                 override fun get(targetPlatform: CompileService.TargetPlatform): CLICompiler<*> = when (targetPlatform) {
                     CompileService.TargetPlatform.JVM -> jvm
                     CompileService.TargetPlatform.JS -> js
+                    CompileService.TargetPlatform.METADATA -> metadata
                 }
             }
             // timer with a daemon thread, meaning it should not prevent JVM to exit normally