Attempt to add property go kotlin gradle plugin

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinProperties.kt

@@ -33,7 +33,8 @@ fun mapKotlinTaskProperties(project: Project, task: KotlinCompile) {
 }
 
 private val propertyMappings = listOf(
-        KotlinPropertyMapping("kotlin.incremental", KotlinCompile::incremental, String::toBoolean)
+        KotlinPropertyMapping("kotlin.incremental", KotlinCompile::incremental, String::toBoolean),
+        KotlinPropertyMapping("kotlin.coroutines", KotlinCompile::coroutines) { CoroutineSupport.byCompilerArgument(it) }
 )
 
 private class KotlinPropertyMapping<T>(
@@ -57,4 +58,18 @@ private class KotlinPropertyMapping<T>(
         val transformedValue = transform(value) ?: return
         taskProperty.set(task, transformedValue)
     }
+}
+
+enum class CoroutineSupport(val compilerArgument: String) {
+    ENABLED("enable"),
+    ENABLED_WITH_WARNING("warn"),
+    DISABLED("error");
+
+    companion object {
+        val DEFAULT = ENABLED_WITH_WARNING
+
+        fun byCompilerArgument(argument: String): CoroutineSupport {
+            return CoroutineSupport.values().find { it.compilerArgument == argument } ?: DEFAULT
+        }
+    }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -40,6 +40,7 @@ import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 import org.jetbrains.kotlin.compilerRunner.ArgumentUtils
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.gradle.dsl.*
+import org.jetbrains.kotlin.gradle.plugin.CoroutineSupport
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
 import org.jetbrains.kotlin.gradle.plugin.kotlinInfo
 import org.jetbrains.kotlin.gradle.utils.ParsedGradleVersion
@@ -70,6 +71,13 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments>() : AbstractCo
             System.setProperty("kotlin.incremental.compilation.experimental", value.toString())
         }
 
+    var coroutines: CoroutineSupport = CoroutineSupport.DEFAULT
+        get() = field
+        set(value) {
+            field = value
+            logger.kotlinDebug { "Set $this.coroutines=${value.compilerArgument}" }
+        }
+
     internal var compilerCalled: Boolean = false
     // TODO: consider more reliable approach (see usage)
     internal var anyClassesCompiled: Boolean = false
@@ -178,6 +186,10 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
 
         val outputDir = destinationDir
 
+        args.coroutinesEnable = coroutines == CoroutineSupport.ENABLED
+        args.coroutinesWarn = coroutines == CoroutineSupport.ENABLED_WITH_WARNING
+        args.coroutinesError = coroutines == CoroutineSupport.DISABLED
+
         if (!incremental) {
             anyClassesCompiled = true
             processCompilerExitCode(compileJvmNotIncrementally(
@@ -343,6 +355,10 @@ open class Kotlin2JsCompile() : AbstractKotlinCompile<K2JSCompilerArguments>(),
         destinationDir.mkdirs()
         args.freeArgs = args.freeArgs + sourceRoots.kotlinSourceFiles.map { it.absolutePath }
 
+        args.coroutinesEnable = coroutines == CoroutineSupport.ENABLED
+        args.coroutinesWarn = coroutines == CoroutineSupport.ENABLED_WITH_WARNING
+        args.coroutinesError = coroutines == CoroutineSupport.DISABLED
+
         if (args.outputFile == null) {
             args.outputFile = defaultOutputFile.canonicalPath
         }