start LS from jar file within the extension

src/extension.ts

@@ -1,28 +1,44 @@
 'use strict';
 
-import * as net from 'net';
+// import * as net from 'net';
+import { spawn } from 'child_process';
+import * as path from 'path';
 
 //import {Trace} from 'vscode-jsonrpc';
 //import { window, workspace, commands, ExtensionContext, Uri } from 'vscode';
 import { workspace, ExtensionContext } from 'vscode';
-import { LanguageClient, LanguageClientOptions, StreamInfo } from 'vscode-languageclient/node';
+import { LanguageClient, LanguageClientOptions } from 'vscode-languageclient/node';
 
 let lc: LanguageClient;
 
 export function activate(context: ExtensionContext) {
-    // The server is a started as a separate app and listens on port 5007
-    let connectionInfo = {
-        host: "localhost",
-        port: 5008
-    };
-    let serverOptions = () => {
-        // Connect to language server via socket
-        let socket = net.connect(connectionInfo);
-        let result: StreamInfo = {
-            writer: socket,
-            reader: socket
-        };
-        return Promise.resolve(result);
+    // // The server is a started as a separate app and listens on port 5007
+    // let connectionInfo = {
+    //     host: "localhost",
+    //     port: 5008
+    // };
+    // let serverOptions = () => {
+    //     // Connect to language server via socket
+    //     let socket = net.connect(connectionInfo);
+    //     let result: StreamInfo = {
+    //         writer: socket,
+    //         reader: socket
+    //     };
+    //     return Promise.resolve(result);
+    // };
+
+    var serverOptions = function () {
+        // Connect to the language server via a io channel
+        var jar = context.asAbsolutePath(path.join('resources', 'de.fraunhofer.ipa.ros.xtext.ide-3.0.0-SNAPSHOT-ls.jar'));
+        var child = spawn('java', ['-Xdebug', '-Xrunjdwp:server=y,transport=dt_socket,address=8000,suspend=n,quiet=y', '-jar', jar, '-log debug']);
+        console.log(child.stdout.toString());
+        child.stdout.on('data', function (chunk) {
+            console.log(chunk.toString());
+        });
+        child.stderr.on('data', function (chunk) {
+            console.error(chunk.toString());
+        });
+        return Promise.resolve(child);
     };
 
     let clientOptions: LanguageClientOptions = {
@@ -31,7 +47,7 @@ export function activate(context: ExtensionContext) {
             fileEvents: workspace.createFileSystemWatcher('**/*.*')
         }
     };
-    
+
     // Create the language client and start the client.
     lc = new LanguageClient('Xtext Server', serverOptions, clientOptions);