Gradle: support moduleName option in KotlinJvmOptions

#KT-42058 Fixed

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt

@@ -63,6 +63,7 @@ class K2JVMCompilerArguments : CommonCompilerArguments() {
     )
     var scriptTemplates: Array<String>? by FreezableVar(null)
 
+    @GradleOption(DefaultValues.StringNullDefault::class)
     @Argument(value = "-module-name", valueDescription = "<name>", description = "Name of the generated .kotlin_module file")
     var moduleName: String? by NullableStringFreezableVar(null)
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SimpleKotlinGradleIT.kt

@@ -73,6 +73,16 @@ class SimpleKotlinGradleIT : BaseGradleIT() {
         }
     }
 
+    @Test
+    fun testModuleName() {
+        Project("moduleName").build("build") {
+            assertSuccessful()
+            assertFileExists("build/classes/kotlin/main/META-INF/FLAG.kotlin_module")
+            assertNoSuchFile("build/classes/kotlin/main/META-INF/moduleName.kotlin_module")
+            assertNotContains("Argument -module-name is passed multiple times")
+        }
+    }
+
     @Test
     fun testCustomJdk() {
         Project("customJdk").build("build") {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/moduleName/build.gradle

@@ -0,0 +1,32 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: "kotlin"
+
+sourceSets {
+    main {
+        kotlin {
+            srcDir 'src'
+        }
+    }
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+}
+
+compileKotlin {
+    kotlinOptions.moduleName = "FLAG"
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/moduleName/src/helloWorld.kt

@@ -0,0 +1,3 @@
+interface A {
+    fun foo(): Int = 1
+}

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

@@ -29,6 +29,12 @@ interface KotlinJvmOptions  : org.jetbrains.kotlin.gradle.dsl.KotlinCommonOption
      */
      var jvmTarget: kotlin.String
 
+    /**
+     * Name of the generated .kotlin_module file
+     * Default value: null
+     */
+     var moduleName: kotlin.String?
+
     /**
      * Don't automatically include the Java runtime into the classpath
      * Default value: false

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

@@ -67,6 +67,13 @@ internal abstract class KotlinJvmOptionsBase : org.jetbrains.kotlin.gradle.dsl.K
             jvmTargetField = value
         }
 
+    private var moduleNameField: kotlin.String?? = null
+    override var moduleName: kotlin.String?
+        get() = moduleNameField ?: null
+        set(value) {
+            moduleNameField = value
+        }
+
     private var noJdkField: kotlin.Boolean? = null
     override var noJdk: kotlin.Boolean
         get() = noJdkField ?: false
@@ -105,6 +112,7 @@ internal abstract class KotlinJvmOptionsBase : org.jetbrains.kotlin.gradle.dsl.K
         javaParametersField?.let { args.javaParameters = it }
         jdkHomeField?.let { args.jdkHome = it }
         jvmTargetField?.let { args.jvmTarget = it }
+        moduleNameField?.let { args.moduleName = it }
         noJdkField?.let { args.noJdk = it }
         noReflectField?.let { args.noReflect = it }
         noStdlibField?.let { args.noStdlib = it }
@@ -122,6 +130,7 @@ internal fun org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments.fi
     javaParameters = false
     jdkHome = null
     jvmTarget = "1.6"
+    moduleName = null
     noJdk = false
     noReflect = true
     noStdlib = true