Support -Xmodule-path and -Xadd-modules command line arguments

#KT-18598 In Progress
 #KT-18599 Fixed

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -30,6 +30,7 @@ import org.jetbrains.kotlin.cli.jvm.compiler.CompileEnvironmentUtil
 import org.jetbrains.kotlin.cli.jvm.compiler.EnvironmentConfigFiles
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler
+import org.jetbrains.kotlin.cli.jvm.config.JvmModulePathRoot
 import org.jetbrains.kotlin.cli.jvm.config.addJavaSourceRoot
 import org.jetbrains.kotlin.cli.jvm.config.addJvmClasspathRoots
 import org.jetbrains.kotlin.cli.jvm.config.jvmClasspathRoots
@@ -106,6 +107,9 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
 
         val classpath = getClasspath(paths, arguments)
         configuration.addJvmClasspathRoots(classpath)
+        for (modularRoot in arguments.javaModulePath?.split(File.pathSeparatorChar).orEmpty()) {
+            configuration.add(JVMConfigurationKeys.CONTENT_ROOTS, JvmModulePathRoot(File(modularRoot)))
+        }
 
         configuration.put(CommonConfigurationKeys.MODULE_NAME, arguments.moduleName ?: JvmAbi.DEFAULT_MODULE_NAME)
 
@@ -299,6 +303,10 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
                 configuration.put(JVMConfigurationKeys.INCREMENTAL_COMPILATION_COMPONENTS, components)
             }
         }
+
+        arguments.additionalJavaModules?.let { additionalJavaModules ->
+            configuration.addAll(JVMConfigurationKeys.ADDITIONAL_JAVA_MODULES, additionalJavaModules.toList())
+        }
     }
 
     override fun createArguments(): K2JVMCompilerArguments = K2JVMCompilerArguments().apply {

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/ClasspathRootsResolver.kt

@@ -29,6 +29,7 @@ import org.jetbrains.kotlin.cli.common.messages.MessageUtil
 import org.jetbrains.kotlin.cli.jvm.config.JavaSourceRoot
 import org.jetbrains.kotlin.cli.jvm.config.JvmClasspathRoot
 import org.jetbrains.kotlin.cli.jvm.config.JvmContentRoot
+import org.jetbrains.kotlin.cli.jvm.config.JvmModulePathRoot
 import org.jetbrains.kotlin.cli.jvm.index.JavaRoot
 import org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder
 import org.jetbrains.kotlin.config.ContentRoot
@@ -41,6 +42,7 @@ import org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleInfo
 internal class ClasspathRootsResolver(
         private val psiManager: PsiManager,
         private val messageCollector: MessageCollector?,
+        private val additionalModules: List<String>,
         private val contentRootToVirtualFile: (JvmContentRoot) -> VirtualFile?
 ) {
     private val javaModuleFinder = CliJavaModuleFinder(VirtualFileManager.getInstance().getFileSystem(StandardFileSystems.JRT_PROTOCOL))
@@ -75,6 +77,15 @@ internal class ClasspathRootsResolver(
                 is JvmClasspathRoot -> {
                     result += JavaRoot(root, JavaRoot.RootType.BINARY)
                 }
+                is JvmModulePathRoot -> {
+                    // TODO: sanitize the automatic module name exactly as in javac
+                    // TODO: read Automatic-Module-Name manifest entry
+                    val module = modularBinaryRoot(root, automaticModuleName = { contentRoot.file.name })
+                    if (module != null) {
+                        // TODO: report something in case of several modules with the same name?
+                        modules += module
+                    }
+                }
                 else -> error("Unknown root type: $contentRoot")
             }
         }
@@ -97,6 +108,17 @@ internal class ClasspathRootsResolver(
         return JavaModule.Explicit(JavaModuleInfo.create(psiJavaModule), root, moduleInfoFile, isBinary = false)
     }
 
+    private fun modularBinaryRoot(root: VirtualFile, automaticModuleName: () -> String): JavaModule? {
+        val moduleInfoFile = root.findChild(PsiJavaModule.MODULE_INFO_CLS_FILE)
+        return if (moduleInfoFile != null) {
+            val moduleInfo = JavaModuleInfo.read(moduleInfoFile) ?: return null
+            JavaModule.Explicit(moduleInfo, root, moduleInfoFile, isBinary = true)
+        }
+        else {
+            JavaModule.Automatic(automaticModuleName(), root)
+        }
+    }
+
     private fun addModularRoots(modules: List<JavaModule>, result: MutableList<JavaRoot>) {
         val sourceModules = modules.filterIsInstance<JavaModule.Explicit>().filterNot(JavaModule::isBinary)
         if (sourceModules.size > 1) {
@@ -113,12 +135,17 @@ internal class ClasspathRootsResolver(
 
         if (javaModuleFinder.allObservableModules.none()) return
 
-        val rootModules =
-                if (sourceModules.isNotEmpty()) {
-                    // TODO: support an option similar to --add-modules
-                    listOf(sourceModules.single().name)
-                }
-                else computeDefaultRootModules() // TODO: + everything from module path
+        val addAllModulePathToRoots = "ALL-MODULE-PATH" in additionalModules
+        if (addAllModulePathToRoots && sourceModules.isNotEmpty()) {
+            report(ERROR, "-Xadd-modules=ALL-MODULE-PATH can only be used when compiling the unnamed module")
+            return
+        }
+
+        val rootModules = when {
+            sourceModules.isNotEmpty() -> listOf(sourceModules.single().name) + additionalModules
+            addAllModulePathToRoots -> modules.map(JavaModule::name)
+            else -> computeDefaultRootModules() + modules.map(JavaModule::name)
+        }
 
         // TODO: if at least one automatic module is added, add all automatic modules as per java.lang.module javadoc
         val allDependencies = javaModuleGraph.getAllDependencies(rootModules).also { loadedModules ->

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -194,7 +194,11 @@ class KotlinCoreEnvironment private constructor(
 
         val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY)
 
-        classpathRootsResolver = ClasspathRootsResolver(PsiManager.getInstance(project), messageCollector, this::contentRootToVirtualFile)
+        classpathRootsResolver = ClasspathRootsResolver(
+                PsiManager.getInstance(project), messageCollector,
+                configuration.getList(JVMConfigurationKeys.ADDITIONAL_JAVA_MODULES),
+                this::contentRootToVirtualFile
+        )
 
         val (initialRoots, javaModules) =
                 classpathRootsResolver.convertClasspathRoots(configuration.getList(JVMConfigurationKeys.CONTENT_ROOTS))
@@ -304,7 +308,8 @@ class KotlinCoreEnvironment private constructor(
 
     private fun contentRootToVirtualFile(root: JvmContentRoot): VirtualFile? {
         return when (root) {
-            is JvmClasspathRoot -> if (root.file.isFile) findJarRoot(root) else findLocalFile(root)
+            is JvmClasspathRoot -> if (root.file.isFile) findJarRoot(root.file) else findLocalFile(root)
+            is JvmModulePathRoot -> if (root.file.isFile) findJarRoot(root.file) else findLocalFile(root)
             is JavaSourceRoot -> findLocalFile(root)
             else -> throw IllegalStateException("Unexpected root: $root")
         }
@@ -320,8 +325,8 @@ class KotlinCoreEnvironment private constructor(
         }
     }
 
-    private fun findJarRoot(root: JvmClasspathRoot): VirtualFile? =
-            applicationEnvironment.jarFileSystem.findFileByPath("${root.file}${URLUtil.JAR_SEPARATOR}")
+    private fun findJarRoot(file: File): VirtualFile? =
+            applicationEnvironment.jarFileSystem.findFileByPath("$file${URLUtil.JAR_SEPARATOR}")
 
     private fun getSourceRootsCheckingForDuplicates(): Collection<String> {
         val uniqueSourceRoots = linkedSetOf<String>()

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/config/JvmContentRoots.kt

@@ -30,6 +30,8 @@ data class JvmClasspathRoot(override val file: File) : JvmContentRoot
 
 data class JavaSourceRoot(override val file: File, val packagePrefix: String?) : JvmContentRoot
 
+data class JvmModulePathRoot(override val file: File) : JvmContentRoot
+
 fun CompilerConfiguration.addJvmClasspathRoot(file: File) {
     add(JVMConfigurationKeys.CONTENT_ROOTS, JvmClasspathRoot(file))
 }