Index Elements serialization. Structure view initial work

* WIP

Signed-off-by: aboyko <[email protected]>

* `SpringIndexElement` serialization. Initial Structure view in VSCode

Signed-off-by: aboyko <[email protected]>

* Corrections

Signed-off-by: aboyko <[email protected]>

* Serialization polishing

Signed-off-by: aboyko <[email protected]>

* Don't include java.lang.Object in supertypes serialization

Signed-off-by: aboyko <[email protected]>

---------

Signed-off-by: aboyko <[email protected]>

Author: BoykoAlex

headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/LanguageServerRunner.java

@@ -24,6 +24,7 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
+import java.util.function.Consumer;
 import java.util.function.Function;
 
 import org.eclipse.lsp4j.jsonrpc.Launcher;
@@ -38,6 +39,8 @@
 import org.springframework.ide.vscode.commons.languageserver.util.SimpleLanguageServer;
 import org.springframework.ide.vscode.commons.protocol.STS4LanguageClient;
 
+import com.google.gson.GsonBuilder;
+
 /**
  * A CommandLineRunner that launches a language server. This meant to be used as a Spring bean
  * in a SpringBoot app.
@@ -98,11 +101,14 @@ public void run(String... args) throws Exception {
 
 	private Function<MessageConsumer, MessageConsumer> messageConsumer;
 
-	public LanguageServerRunner(LanguageServerProperties properties, SimpleLanguageServer languageServer, Function<MessageConsumer, MessageConsumer> messageConsumer) {
+	private Consumer<GsonBuilder> configureGson;
+
+	public LanguageServerRunner(LanguageServerProperties properties, SimpleLanguageServer languageServer, Function<MessageConsumer, MessageConsumer> messageConsumer, Consumer<GsonBuilder> configureGson) {
 		super();
 		this.properties = properties;
 		this.languageServer = languageServer;
 		this.messageConsumer = messageConsumer;
+		this.configureGson = configureGson;
 	}
 
 	public void start() throws Exception {
@@ -207,7 +213,7 @@ private <T> Launcher<T> createSocketLauncher(
 		AsynchronousSocketChannel socketChannel = serverSocket.accept().get();
 		log.info("Client connected via socket");
 		return Launcher.createIoLauncher(localService, remoteInterface, Channels.newInputStream(socketChannel),
-				Channels.newOutputStream(socketChannel), executorService, wrapper);
+				Channels.newOutputStream(socketChannel), executorService, wrapper, configureGson);
 	}
 
 	private static Connection connectToNode() throws IOException {
@@ -235,12 +241,13 @@ private static Connection connectToNode() throws IOException {
 	private Future<Void> runAsync(Connection connection) throws Exception {
 		LanguageServer server = this.languageServer;
 		ExecutorService executor = createServerThreads();
-		Launcher<STS4LanguageClient> launcher = Launcher.createLauncher(server,
+		Launcher<STS4LanguageClient> launcher = Launcher.createIoLauncher(server,
 				STS4LanguageClient.class,
 				connection.in,
 				connection.out,
 				executor,
-				messageConsumer
+				messageConsumer,
+				configureGson
 		);
 
 		if (server instanceof LanguageClientAware) {