JS backend: add -meta-info command line option for cli compiler

ant/src/org/jetbrains/kotlin/ant/Kotlin2JsTask.kt

@@ -26,6 +26,7 @@ public class Kotlin2JsTask : KotlinCompilerBaseTask() {
     public var outputPrefix: File? = null
     public var outputPostfix: File? = null
     public var sourceMap: Boolean = false
+    public var metaInfo: File? = null
 
     /**
      * {@link K2JsArgumentConstants.CALL} (default) if need generate a main function call (main function will be auto detected)
@@ -71,5 +72,10 @@ public class Kotlin2JsTask : KotlinCompilerBaseTask() {
 
         if (noStdlib) args.add("-no-stdlib")
         if (sourceMap) args.add("-source-map")
+
+        metaInfo?.let {
+            args.add("-meta-info")
+            args.add(it.canonicalPath)
+        }
     }
 }

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java

@@ -38,6 +38,10 @@ public class K2JSCompilerArguments extends CommonCompilerArguments {
     @Argument(value = "source-map", description = "Generate source map")
     public boolean sourceMap;
 
+    @Argument(value = "meta-info", description = "Generate meta information and save to the given file")
+    @ValueDescription("<path>")
+    public String metaInfo;
+
     @Argument(value = "target", description = "Generate JS files for specific ECMA version (only ECMA 5 is supported)")
     @ValueDescription("<version>")
     public String target;

compiler/cli/cli.iml

@@ -18,6 +18,7 @@
     <orderEntry type="module" module-name="backend-common" />
     <orderEntry type="module" module-name="serialization" />
     <orderEntry type="module" module-name="serialization.jvm" />
+    <orderEntry type="module" module-name="js.serializer" />
     <orderEntry type="module" module-name="util" />
   </component>
 </module>

compiler/cli/src/org/jetbrains/kotlin/cli/js/K2JSCompiler.java

@@ -29,6 +29,7 @@ import kotlin.Function1;
 import kotlin.Unit;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.utils.serializer.KotlinJavaScriptSerializer;
 import org.jetbrains.kotlin.analyzer.AnalysisResult;
 import org.jetbrains.kotlin.backend.common.output.OutputFileCollection;
 import org.jetbrains.kotlin.cli.common.CLICompiler;
@@ -191,6 +192,10 @@ public class K2JSCompiler extends CLICompiler<K2JSCompilerArguments> {
         }
         OutputUtilsPackage.writeAll(outputFiles, outputDir, messageCollector);
 
+        if (arguments.metaInfo != null) {
+            new KotlinJavaScriptSerializer().serialize(config.getModuleId(), analysisResult.getModuleDescriptor(), new File(arguments.metaInfo));
+        }
+
         return OK;
     }
 

compiler/testData/cli/js/jsHelp.out

@@ -4,6 +4,7 @@ where possible options include:
   -no-stdlib                 Don't use bundled Kotlin stdlib
   -library-files <path[,]>   Path to zipped library sources or kotlin files separated by commas
   -source-map                Generate source map
+  -meta-info <path>          Generate meta information and save to the given file
   -target <version>          Generate JS files for specific ECMA version (only ECMA 5 is supported)
   -main {call,noCall}        Whether a main function should be called; default 'call' (main function will be auto detected)
   -output-prefix <path>      Path to file which will be added to the beginning of output file

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

@@ -218,6 +218,7 @@ public open class Kotlin2JsCompile() : AbstractKotlinCompile<K2JSCompilerArgumen
         args.outputFile = outputFile
         args.outputPrefix = kotlinOptions.outputPrefix
         args.outputPostfix = kotlinOptions.outputPostfix
+        args.metaInfo = kotlinOptions.metaInfo
 
         val kotlinJsLibsFromDependencies =
                 getProject().getConfigurations().getByName("compile")

libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java

@@ -45,10 +45,18 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
      */
     private String outputFile;
 
+    /**
+     * The output metafile name
+     *
+     * @parameter default-value="${project.build.directory}/js/${project.artifactId}.meta.js"
+     */
+    private String metaFile;
+
         @Override
     protected void configureSpecificCompilerArguments(@NotNull K2JSCompilerArguments arguments) throws MojoExecutionException {
         arguments.outputFile = outputFile;
         arguments.noStdlib = true;
+        arguments.metaInfo = metaFile;
 
         List<String> libraries = getKotlinJavascriptLibraryFiles();
         LOG.info("libraryFiles: " + libraries);