git.roojs.org Git - roobuilder/blob - src/Palete/LanguageClientVala.vala

   1
   2 namespace Palete {
   3         public class LanguageClientVala : LanguageClient {
   4                 protected bool initialized = false;
   5                 bool sent_shutdown = false;
   6                 uint change_queue_id = 0;
   7
   8
   9                 private bool _closed = false;
  10                 private bool closed {
  11                         get { return this._closed ; }
  12                         set {
  13                                 GLib.debug("closed has been set? to %s" , value ? "TRUE" : "FALSE" );
  14                                 this._closed = value;
  15                         }
  16                 }
  17                 private GLib.SubprocessLauncher launcher = null;
  18                 private GLib.Subprocess? subprocess = null;
  19                 private IOStream? subprocess_stream = null;
  20             public Jsonrpc.Client? jsonrpc_client = null;
  21
  22                 int countdown = 0;
  23                 Gee.ArrayList<JsRender.JsRender> open_files;
  24                 private JsRender.JsRender? _change_queue_file = null;
  25                 int doc_countdown = 0;
  26                 private string change_queue_file_source = "";
  27                 private JsRender.JsRender? doc_queue_file = null;
  28
  29
  30                 JsRender.JsRender? change_queue_file {
  31                         set {
  32                                 this.change_queue_file_source = value == null ? "" : value.toSource();
  33                                 this._change_queue_file = value;
  34                         }
  35                         get {
  36                                 return this._change_queue_file;
  37                         }
  38                 }
  39
  40
  41
  42                 void startServer()
  43                 {
  44                         var exe = GLib.Environment.find_program_in_path( "vala-language-server");
  45                         if (exe == null) {
  46                                 GLib.warning("could not find vala-language-server");
  47
  48                                 return;
  49                         }
  50                         this.initProcess(exe);
  51                 }
  52
  53
  54                 public LanguageClientVala(Project.Project project)
  55                 {
  56                         // extend versions will proably call initialize to start and connect to server.
  57                         base(project);
  58
  59                         if (this.change_queue_id == 0 ) {
  60                                 this.change_queue_id = GLib.Timeout.add(500, () => {
  61                                         this.run_change_queue();
  62                                         return true;
  63                                 });
  64                         }
  65
  66                         this.startServer();
  67
  68                 }
  69
  70                 void run_change_queue()
  71                 {
  72
  73                         if (this.change_queue_file == null) {
  74                                 return ;
  75                         }
  76                         if (this.countdown < -1) {
  77                                 return;
  78                         }
  79                         if (this.getting_diagnostics) {
  80                                 return;
  81                         }
  82                         this.countdown--;
  83
  84
  85                         if (this.countdown < 0){
  86                                 this.document_change_force.begin(this.change_queue_file,  this.change_queue_file_source, (o, res) => {
  87                                         this.document_change_force.end(res);
  88                                 });
  89                                 this.change_queue_file = null;
  90
  91                         }
  92                         return ;
  93                 }
  94
  95                 async int queuer(int cnt)
  96                 {
  97                         SourceFunc cb = this.queuer.callback;
  98
  99                         GLib.Timeout.add(500, () => {
 100                                  GLib.Idle.add((owned) cb);
 101                                  return false;
 102                         });
 103
 104                         yield;
 105                         return cnt;
 106                 }
 107                 static int doc_queue_id = 0;
 108
 109
 110
 111
 112                 public bool initProcess(string process_path)
 113                 {
 114                         this.onClose();
 115                         this.log(LanguageClientAction.LAUNCH, process_path);
 116                         GLib.debug("Launching %s", process_path);
 117                         this.launcher = new GLib.SubprocessLauncher (SubprocessFlags.STDIN_PIPE | SubprocessFlags.STDOUT_PIPE);
 118                         var env = GLib.Environ.get();
 119                         env += "G_MESSAGES_DEBUG=all";
 120
 121                         this.launcher.set_environ(env);
 122                         var logpath = GLib.Environment.get_home_dir() + "/.cache/vala-language-server";
 123
 124                         if (!GLib.FileUtils.test(logpath, GLib.FileTest.IS_DIR)) {
 125                                 Posix.mkdir(logpath, 0700);
 126                         }
 127                         // not very reliable..
 128                         //this.launcher.set_stderr_file_path(
 129                         //      logpath + "/" +
 130                         //      (new GLib.DateTime.now_local()).format("%Y-%m-%d") + ".log"
 131                         //);
 132                         //GLib.debug("log lang server to %s", logpath + "/" +
 133                         //      (new GLib.DateTime.now_local()).format("%Y-%m-%d") + ".log");
 134
 135                         try {
 136
 137
 138                                 this.subprocess = launcher.spawnv ({ process_path , "2>" , "/tmp/vala-language-server.log" });
 139
 140                                 this.subprocess.wait_async.begin( null, ( obj,res ) => {
 141                                         try {
 142                                                 this.subprocess.wait_async.end(res);
 143                                         } catch (GLib.Error e) {
 144                                                 this.log(LanguageClientAction.ERROR_START, e.message);
 145                                                 GLib.debug("subprocess startup error %s", e.message);
 146                                         }
 147                                         this.log(LanguageClientAction.EXIT, "process ended");
 148                                         GLib.debug("Subprocess ended %s", process_path);
 149                                         this.onClose();
 150
 151                                 });
 152                                 var input_stream = this.subprocess.get_stdout_pipe ();
 153                                 var output_stream = this.subprocess.get_stdin_pipe ();
 154
 155                                 if (input_stream is GLib.UnixInputStream && output_stream is GLib.UnixOutputStream) {
 156                                         // set nonblocking
 157                                         if (!GLib.Unix.set_fd_nonblocking(((GLib.UnixInputStream)input_stream).fd, true)
 158                                          || !GLib.Unix.set_fd_nonblocking (((GLib.UnixOutputStream)output_stream).fd, true))
 159                                          {
 160                                                 GLib.debug("could not set pipes to nonblocking");
 161                                                 this.onClose();
 162                                             return false;
 163                                     }
 164                             }
 165                             this.subprocess_stream = new GLib.SimpleIOStream (input_stream, output_stream);
 166                         this.accept_io_stream ( this.subprocess_stream);
 167                         } catch (GLib.Error e) {
 168                                 this.log(LanguageClientAction.ERROR_START, e.message);
 169                                 GLib.debug("subprocess startup error %s", e.message);
 170                                 this.onClose();
 171                                 return false;
 172                 }
 173             return true;
 174         }
 175         bool in_close = false;
 176                 public override void client_accepted (Jsonrpc.Client client)
 177                 {
 178                         if (this.jsonrpc_client == null) {
 179                                 this.jsonrpc_client = client;
 180
 181                                 GLib.debug("client accepted connection - calling init server");
 182                                 this.log(LanguageClientAction.ACCEPT, "client accepted");
 183
 184                                 this.jsonrpc_client.notification.connect((method, paramz) => {
 185                                         this.onNotification(method, paramz);
 186                                 });
 187
 188                                 this.jsonrpc_client.failed.connect(() => {
 189                                         this.log(LanguageClientAction.ERROR_RPC, "client failed");
 190                                         GLib.debug("language server server has failed");
 191                                         this.onClose();
 192
 193
 194                                 });
 195
 196                                 this.initialize_server ();
 197                         }
 198
 199                 }
 200
 201
 202                 public override   void  initialize_server()   {
 203                         try {
 204                                 Variant? return_value;
 205                                     this.jsonrpc_client.call (
 206                                     "initialize",
 207                                     this.buildDict (
 208                                         processId: new Variant.int32 ((int32) Posix.getpid ()),
 209                                         rootPath: new Variant.string (this.project.path),
 210                                         rootUri: new Variant.string (File.new_for_path (this.project.path).get_uri ()),
 211                                         capabilities : this.buildDict (
 212                                                 textDocument: this.buildDict (
 213                                                         documentSymbol : this.buildDict (
 214                                                                 hierarchicalDocumentSymbolSupport : new Variant.boolean (true)
 215                                                         )
 216                                                 )
 217                                         )
 218                                     ),
 219                                     null,
 220                                     out return_value
 221                                 );
 222                                 GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 223                                 this.open_files = new Gee.ArrayList<JsRender.JsRender>((a,b) => {
 224                                         return a.path == b.path;
 225                                 });
 226                                 this.initialized = true;
 227                                 this.getting_diagnostics = false;
 228                                 return;
 229                         } catch (GLib.Error e) {
 230                                 GLib.debug ("LS replied with error %s", e.message);
 231                                 this.onClose();
 232                         }
 233
 234                 }
 235                 void onClose()
 236                 {
 237                         if (this.in_close) {
 238                                 return;
 239                         }
 240                         if (this.launcher == null) {
 241                                 return;
 242                         }
 243                         this.getting_diagnostics = false;
 244                         this.in_close = true;
 245                         GLib.debug("onClose called");
 246
 247                         if (this.jsonrpc_client != null) {
 248                                 try {
 249                                         this.jsonrpc_client.close();
 250                                 } catch (GLib.Error e) {
 251                                         GLib.debug("rpc Error close error %s", e.message);
 252                                 }
 253                         }
 254                         if (this.subprocess_stream != null) {
 255                                 try {
 256                                         this.subprocess_stream.close();
 257                                 } catch (GLib.Error e) {
 258                                         GLib.debug("stream Error close  %s", e.message);
 259                                 }
 260                         }
 261                         if (this.subprocess != null) {
 262                                 this.subprocess.force_exit();
 263                         }
 264                         if (this.launcher != null) {
 265                                 this.launcher.close();
 266                         }
 267
 268                         this.launcher = null;
 269                         this.subprocess = null;
 270                         this.jsonrpc_client = null;
 271                         this.closed = true;
 272                         this.in_close = false;
 273                 }
 274
 275                 public async void restartServer()
 276                 {
 277                         this.startServer();
 278
 279                 }
 280
 281                 public override bool isReady()
 282                 {
 283                         if (this.closed) {
 284                                 this.log(LanguageClientAction.RESTART,"closed is set - restarting");
 285                                 GLib.debug("server stopped = restarting");
 286                                 this.initialized = false;
 287                                 this.closed = false;
 288                                 GLib.MainLoop loop = new GLib.MainLoop ();
 289                                 this.restartServer.begin ((obj, async_res) => {
 290                                         this.restartServer.end(async_res);
 291                                         loop.quit ();
 292                                 });
 293                                 return false; // can't do an operation yet?
 294
 295                         }
 296
 297                         if (!this.initialized) {
 298                                 GLib.debug("Server has not been initialized");
 299                                 return false;
 300                         }
 301                         if (this.sent_shutdown) {
 302                                 GLib.debug("Server has been started its shutting down process");
 303                                 return false;
 304                         }
 305                         // restart server..
 306
 307
 308
 309                         return true;
 310                 }
 311
 312                 public void onNotification(string method, Variant? return_value)
 313                 {
 314                         switch (method) {
 315                                 case "textDocument/publishDiagnostics":
 316                                         //GLib.debug("got notification %s : %s",  method , Json.to_string (Json.gvariant_serialize (return_value), true));
 317
 318                                         GLib.Idle.add(() => {
 319                                                 this.onDiagnostic(return_value);
 320                                                 return false;
 321                                         });
 322                                         return;
 323                                 default:
 324                                         break;
 325
 326                         }
 327                         GLib.debug("got notification %s : %s",  method , Json.to_string (Json.gvariant_serialize (return_value), true));
 328
 329                 }
 330
 331                 bool getting_diagnostics = false;
 332                 /***
 333
 334                 */
 335                 public void onDiagnostic(Variant? return_value)
 336                 {
 337                         //GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 338                         var dg = Json.gobject_deserialize (typeof (Lsp.Diagnostics), Json.gvariant_serialize (return_value)) as Lsp.Diagnostics;
 339                         GLib.debug("got diag for %s", dg.filename);
 340                         this.log(LanguageClientAction.DIAG, dg.filename);
 341                         if (this.project.path == dg.filename) {
 342                                 this.getting_diagnostics = false;
 343                                 this.log(LanguageClientAction.DIAG_END, "diagnostics done");
 344                                 return;
 345
 346                         }
 347                         this.getting_diagnostics =true;
 348                         var f = this.project.getByPath(dg.filename);
 349                         if (f == null) {
 350                                 //GLib.debug("no file %s", dg.uri);
 351                                 //this.project.updateErrorsforFile(null);
 352                                 return;
 353                         }
 354                         //GLib.debug("got Diagnostics for %s", f.path);
 355                         f.updateErrors( dg.diagnostics );
 356
 357
 358                 }
 359
 360                 public override void document_open (JsRender.JsRender file)
 361                 {
 362                         if (!this.isReady()) {
 363                                 return;
 364                         }
 365                         if (this.open_files.contains(file)) {
 366                                 return;
 367                         }
 368                         this.open_files.add(file);
 369
 370
 371                         GLib.debug ("LS sent open");
 372                         try {
 373                                 this.jsonrpc_client.send_notification (
 374                                         "textDocument/didOpen",
 375                                         this.buildDict (
 376                                                 textDocument : this.buildDict (
 377                                                         uri: new Variant.string (file.to_url()),
 378                                                         languageId :  new Variant.string (file.language_id()),
 379                                                         version :  new GLib.Variant.uint64 ( (uint64) file.version),
 380                                                         text : new Variant.string (file.toSource())
 381                                                 )
 382                                         ),
 383                                         null
 384                                 );
 385                                 this.log(LanguageClientAction.OPEN, file.path);
 386                         } catch( GLib.Error  e) {
 387                                 this.log(LanguageClientAction.ERROR_RPC, e.message);
 388                                 this.onClose();
 389                                 GLib.debug ("LS sent open err %s", e.message);
 390                         }
 391
 392                 }
 393
 394                 public override  async void document_save (JsRender.JsRender file)
 395         {
 396                         if (!this.isReady()) {
 397                                 return;
 398                         }
 399                         // save only really flags the file on the server - to actually force a change update - we need to
 400                         // flag it as changed.
 401                         yield this.document_change_force(file, file.toSource());
 402
 403                         this.change_queue_file = null;
 404                         GLib.debug ("LS send save");
 405                          try {
 406
 407                                 var args = this.buildDict (
 408                                         textDocument : this.buildDict (    ///TextDocumentItem;
 409                                                 uri: new GLib.Variant.string (file.to_url()),
 410                                                 version :  new GLib.Variant.uint64 ( (uint64) file.version)
 411                                         )
 412                                 );
 413
 414                                 //GLib.debug ("textDocument/save send with %s", Json.to_string (Json.gvariant_serialize (args), true));
 415
 416
 417
 418                                   yield this.jsonrpc_client.send_notification_async  (
 419                                         "textDocument/didSave",
 420                                         args,
 421                                         null
 422                                 );
 423                                 this.log(LanguageClientAction.SAVE, file.path);
 424                         } catch( GLib.Error  e) {
 425                                 this.log(LanguageClientAction.ERROR_RPC, e.message);
 426                                 GLib.debug ("LS   save err %s", e.message);
 427                                 this.onClose();
 428                         }
 429
 430
 431         }
 432                 public override  void document_close (JsRender.JsRender file)
 433         {
 434                         if (!this.isReady()) {
 435                                 return;
 436                         }
 437                         this.change_queue_file = null;
 438
 439                         if (this.open_files.contains(file)) {
 440                                 this.open_files.remove(file);
 441                         }
 442                         this.log(LanguageClientAction.CLOSE, file.path);
 443                         GLib.debug ("LS send close");
 444                         try {
 445                                   this.jsonrpc_client.send_notification  (
 446                                         "textDocument/didChange",
 447                                         this.buildDict (
 448                                                 textDocument : this.buildDict (    ///TextDocumentItem;
 449                                                         uri: new GLib.Variant.string (file.to_url())
 450
 451                                                 )
 452                                         ),
 453                                         null
 454                                 );
 455                         } catch( GLib.Error  e) {
 456                                 this.log(LanguageClientAction.ERROR_RPC, e.message);
 457                                 GLib.debug ("LS close err %s", e.message);
 458                                 this.onClose();
 459                         }
 460
 461
 462         }
 463
 464
 465                 public override void document_change (JsRender.JsRender file )
 466                 {
 467                         if (this.change_queue_file != null && this.change_queue_file.path != file.path) {
 468                                 this.document_change_force.begin(this.change_queue_file, this.change_queue_file_source, (o, res) => {
 469                                         this.document_change_force.end(res);
 470                                 });
 471                         }
 472
 473                         this.countdown = 2;
 474                         this.change_queue_file = file;
 475
 476
 477
 478                 }
 479
 480
 481                 public override async void document_change_force (JsRender.JsRender file, string contents)
 482         {
 483
 484
 485                         if (!this.isReady()) {
 486                                 return;
 487                         }
 488                         this.countdown = -2; // not really relivant..
 489                         this.change_queue_file = null; // this is more important..
 490
 491                     if (!this.open_files.contains(file)) {
 492                                  this.document_open(file);
 493                         }
 494
 495                         GLib.debug ("LS send change %s rev %d", file.path, file.version);
 496                         var ar = new Json.Array();
 497                         var obj = new Json.Object();
 498                         obj.set_string_member("text", contents);
 499                         ar.add_object_element(obj);
 500                         var node = new Json.Node(Json.NodeType.ARRAY);
 501                         node.set_array(ar);
 502                         this.log(LanguageClientAction.CHANGE, file.path);
 503                          try {
 504                                 yield this.jsonrpc_client.send_notification_async (
 505                                         "textDocument/didChange",
 506                                         this.buildDict (
 507                                                 textDocument : this.buildDict (    ///TextDocumentItem;
 508                                                         uri: new GLib.Variant.string (file.to_url()),
 509                                                         version :  new GLib.Variant.uint64 ( (uint64) file.version)
 510                                                 ),
 511                                                 contentChanges : Json.gvariant_deserialize (node, null)
 512
 513                                         ),
 514                                         null
 515                                 );
 516                         } catch( GLib.Error  e) {
 517                                 this.log(LanguageClientAction.ERROR_RPC, e.message);
 518                                 GLib.debug ("LS change err %s", e.message);
 519                                 this.onClose();
 520                         }
 521
 522
 523         }
 524         // called by close window (on last window)...
 525                 public override  void exit () throws GLib.Error
 526                 {
 527                         if (!this.isReady()) {
 528
 529                                 return;
 530                         }
 531                         this.log(LanguageClientAction.TERM, "SEND exit");
 532
 533                           this.jsonrpc_client.send_notification (
 534                                 "exit",
 535                                 null,
 536                                 null
 537                         );
 538                         this.onClose();
 539
 540                 }
 541                 // not used currently..
 542                 public override async void shutdown () throws GLib.Error
 543                 {
 544                         if (!this.isReady()) {
 545                                 return;
 546                         }
 547                         this.log(LanguageClientAction.TERM, "SEND shutodwn");
 548                         this.sent_shutdown  = true;
 549                         Variant? return_value;
 550                         yield this.jsonrpc_client.call_async (
 551                                 "shutdown",
 552                                 null,
 553                                 null,
 554                                 out return_value
 555                         );
 556                         GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 557                 }
 558                 //public async  ??/symbol (string symbol) throws GLib.Error {
 559
 560                 // and now for the important styff..
 561
 562                 /*
 563
 564                 @triggerType 1 = typing or ctl-spac, 2 = tiggercharactres?  3= inside completion?
 565                 */
 566                  public override async Lsp.CompletionList?  completion(JsRender.JsRender file, int line, int offset , int triggerType = 1) throws GLib.Error
 567                  {
 568                         /* partial_result_token ,  work_done_token   context = null) */
 569                         GLib.debug("%s get completion %s @ %d:%d", this.get_type().name(),  file.relpath, line, offset);
 570
 571                         var ret = new Lsp.CompletionList();
 572
 573                     if (!this.isReady()) {
 574                         GLib.debug("completion - language server not ready");
 575                                 return ret;
 576                         }
 577                         // make sure completion has the latest info..
 578                         //if (this.change_queue_file != null && this.change_queue_file.path != file.path) {
 579                         //      this.document_change_real(this.change_queue_file, this.change_queue_file_source);
 580                         //      this.change_queue_file != null;
 581                         //}
 582                         this.log(LanguageClientAction.COMPLETE, "SEND complete  %s @ %d:%d".printf(file.relpath, line, offset) );
 583
 584                         Variant? return_value;
 585
 586                         var args = this.buildDict (
 587                                         context : this.buildDict (    ///CompletionContext;
 588                                                 triggerKind: new GLib.Variant.int32 (triggerType)
 589                                         //      triggerCharacter :  new GLib.Variant.string ("")
 590                                         ),
 591                                         textDocument : this.buildDict (    ///TextDocumentItem;
 592                                                 uri: new GLib.Variant.string (file.to_url()),
 593                                                 version :  new GLib.Variant.uint64 ( (uint64) file.version)
 594                                         ),
 595                                         position :  this.buildDict (
 596                                                 line :  new GLib.Variant.uint64 ( (uint) line) ,
 597                                                 character :  new GLib.Variant.uint64 ( uint.max(0,  (offset -1)))
 598                                         )
 599                                 );
 600
 601                         GLib.debug ("textDocument/completion send with %s", Json.to_string (Json.gvariant_serialize (args), true));
 602
 603                         yield this.jsonrpc_client.call_async (
 604                                 "textDocument/completion",
 605                                 args,
 606                                 null,
 607                                 out return_value
 608                         );
 609
 610
 611                         //GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 612                         var json = Json.gvariant_serialize (return_value);
 613
 614
 615                         if (json.get_node_type() == Json.NodeType.OBJECT) {
 616                                 ret = Json.gobject_deserialize (typeof (Lsp.CompletionList), json) as Lsp.CompletionList;
 617                                 this.log(LanguageClientAction.COMPLETE_REPLY, "GOT complete  %d items".printf(ret.items.size) );
 618                                 GLib.debug ("LS replied with Object");
 619                                 return ret;
 620                         }
 621
 622                         if (json.get_node_type() != Json.NodeType.ARRAY) {
 623                                 GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 624                                 this.log(LanguageClientAction.ERROR_REPLY, "GOT something else??");
 625                                 return ret;
 626
 627                         }
 628                         var ar = json.get_array();
 629
 630                         for(var i = 0; i < ar.get_length(); i++ ) {
 631                                 var add= Json.gobject_deserialize ( typeof (Lsp.CompletionItem),  ar.get_element(i)) as Lsp.CompletionItem;
 632                                 ret.items.add( add);
 633
 634                         }
 635                         this.log(LanguageClientAction.COMPLETE_REPLY, "GOT array %d items".printf(ret.items.size) );
 636                         GLib.debug ("LS replied with Array");
 637                         return ret;
 638
 639
 640                 }
 641
 642
 643
 644                 static int hover_call_count = 1;
 645                 bool getting_hover = false;
 646
 647                 //CompletionListInfo.itmems.parse_varient  or CompletionListInfo.parsevarient
 648                 public override async  Lsp.Hover hover (JsRender.JsRender file, int line, int offset) throws GLib.Error
 649                  {
 650                         /* partial_result_token ,  work_done_token   context = null) */
 651                         //GLib.debug("get hover %s %d %d", file.relpath, (int)line, (int)offset);
 652                         var ret = new Lsp.Hover();
 653                         //ret = null;
 654                     if (!this.isReady()) {
 655                                 return ret;
 656                         }
 657                         if (this.getting_hover) {
 658                                 return ret;
 659                         }
 660
 661                         hover_call_count++;
 662                         var  call_id = yield this.queuer(hover_call_count);
 663
 664                         //GLib.debug("end hover call=%d   count=%d", call_id, hover_call_count);
 665                         if (call_id != hover_call_count) {
 666                                 //GLib.debug("get hover CANCELLED %s %d %d", file.relpath, (int)line, (int)offset);
 667                                 return ret;
 668                         }
 669
 670                         //GLib.debug("get hover RUN %s %d %d", file.relpath, (int)line, (int)offset);
 671
 672                         this.getting_hover = true;
 673
 674                         Variant? return_value;
 675                         try {
 676                                 yield this.jsonrpc_client.call_async (
 677                                         "textDocument/hover",
 678                                         this.buildDict (
 679
 680                                                 textDocument : this.buildDict (    ///TextDocumentItem;
 681                                                         uri: new GLib.Variant.string (file.to_url()),
 682                                                         version :  new GLib.Variant.uint64 ( (uint64) file.version)
 683                                                 ),
 684                                                 position :  this.buildDict (
 685                                                         line :  new GLib.Variant.uint64 ( (uint) line) ,
 686                                                         character :  new GLib.Variant.uint64 ( uint.max(0,  (offset -1)))
 687                                                 )
 688
 689                                         ),
 690                                         null,
 691                                         out return_value
 692                                 );
 693                         } catch(GLib.Error e) {
 694                                 this.getting_hover = false;
 695                                 throw e;
 696                         }
 697                         this.getting_hover = false;
 698                          GLib.debug ("LS hover replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 699                         if (return_value == null) {
 700                                 return ret;
 701                         }
 702
 703                         var json = Json.gvariant_serialize (return_value);
 704                         if (json.get_node_type() != Json.NodeType.OBJECT) {
 705                                 return ret;
 706                         }
 707
 708
 709                         ret =  Json.gobject_deserialize ( typeof (Lsp.Hover),  json) as Lsp.Hover;
 710
 711                         return ret;
 712
 713
 714
 715                 }
 716
 717
 718                 static int doc_symbol_queue_call_count = 1;
 719
 720
 721
 722                 public override void queueDocumentSymbols (JsRender.JsRender file)
 723                 {
 724
 725                         this.documentSymbols.begin(file, (o, res) => {
 726                                 var ret = documentSymbols.end(res);
 727                                 file.navigation_tree_updated(ret);
 728                         });
 729
 730
 731                 }
 732
 733                 bool getting_symbols = false;
 734
 735                 public override async Gee.ArrayList<Lsp.DocumentSymbol> documentSymbols (JsRender.JsRender file) throws GLib.Error
 736                 {
 737                         /* partial_result_token ,  work_done_token   context = null) */
 738                         GLib.debug("get documentSymbols %s", file.relpath);
 739                         var ret = new Gee.ArrayList<Lsp.DocumentSymbol>();
 740                         //ret = null;
 741                     if (!this.isReady()) {
 742                         GLib.debug("docsymbols not ready");
 743                                 return ret;
 744                         }
 745                         if (this.getting_symbols) {
 746                                 GLib.debug("docsymbols currently getting symbols");
 747                                 return ret;
 748                         }
 749
 750
 751                         doc_symbol_queue_call_count++;
 752                         var call_id = yield this.queuer(doc_symbol_queue_call_count);
 753                         if (call_id != doc_symbol_queue_call_count) {
 754                                 GLib.debug("docsymbols call id does not match %d %d" ,call_id , doc_symbol_queue_call_count);
 755                                 return ret;
 756                         }
 757                         this.getting_symbols = true;
 758
 759                         Variant? return_value;
 760                         try {
 761                                 yield this.jsonrpc_client.call_async (
 762                                         "textDocument/documentSymbol",
 763                                         this.buildDict (
 764
 765                                                 textDocument : this.buildDict (    ///TextDocumentItem;
 766                                                         uri: new GLib.Variant.string (file.to_url()),
 767                                                         version :  new GLib.Variant.uint64 ( (uint64) file.version)
 768                                                 )
 769
 770                                         ),
 771                                         null,
 772                                         out return_value
 773                                 );
 774                         } catch(Error e) {
 775                                 this.getting_symbols = false;
 776                                 throw e;
 777                         }
 778                         this.getting_symbols = false;
 779
 780                         GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 781                         var json = Json.gvariant_serialize (return_value);
 782
 783
 784
 785                         var ar = json.get_array();
 786                         GLib.debug ("LS replied with %D items", ar.get_length());
 787                         for(var i = 0; i < ar.get_length(); i++ ) {
 788                                 var add= Json.gobject_deserialize ( typeof (Lsp.DocumentSymbol),  ar.get_element(i)) as Lsp.DocumentSymbol;
 789                                 ret.add( add);
 790
 791                         }
 792                         return ret ;
 793
 794
 795                 }
 796                 // cant seem to get this to show anything!!
 797                 public override async Gee.ArrayList<Lsp.SignatureInformation> signatureHelp (JsRender.JsRender file, int line, int offset) throws GLib.Error {
 798                         /* partial_result_token ,  work_done_token   context = null) */
 799                         GLib.debug("get signatureHelp %s, %d, %d", file.relpath, line, offset);
 800                         var ret = new Gee.ArrayList<Lsp.SignatureInformation>();
 801                         //ret = null;
 802                     if (!this.isReady()) {
 803                                 return ret;
 804                         }
 805                         Variant? return_value;
 806                                 yield this.jsonrpc_client.call_async (
 807                                 "textDocument/signatureHelp",
 808                                 this.buildDict (
 809
 810                                         textDocument : this.buildDict (    ///TextDocumentItem;
 811                                                 uri: new GLib.Variant.string (file.to_url())
 812                                         ),
 813                                         position :  this.buildDict (
 814                                                 line :  new GLib.Variant.uint64 ( (uint) line) ,
 815                                                 character :  new GLib.Variant.uint64 ( uint.max(0,  (offset -1)))
 816                                         )
 817
 818                                 ),
 819                                 null,
 820                                 out return_value
 821                         );
 822
 823
 824                         GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 825                         var json = Json.gvariant_serialize (return_value);
 826                         if (json.get_node_type() != Json.NodeType.ARRAY) {
 827                                 return ret;
 828                         }
 829
 830
 831
 832                         var ar = json.get_array();
 833                         GLib.debug ("LS replied with %D items", ar.get_length());
 834                         for(var i = 0; i < ar.get_length(); i++ ) {
 835                                 var add= Json.gobject_deserialize ( typeof (Lsp.SignatureInformation),  ar.get_element(i)) as Lsp.SignatureInformation;
 836                                 ret.add( add);
 837
 838                         }
 839                         return ret ;
 840
 841
 842                 }
 843                 // ok for general symbol search, not much details though.
 844                 public override async Gee.ArrayList<Lsp.SymbolInformation> symbol (string sym) throws GLib.Error
 845                 {
 846                         /* partial_result_token ,  work_done_token   context = null) */
 847                         GLib.debug("get symbol %s,", sym);
 848                         var ret = new Gee.ArrayList<Lsp.SymbolInformation>();
 849                         //ret = null;
 850                         if (!this.isReady()) {
 851                                 return ret;
 852                         }
 853                         Variant? return_value;
 854                                 yield this.jsonrpc_client.call_async (
 855                                 "workspace/symbol",
 856                                 this.buildDict (
 857                                         query :  new GLib.Variant.string (sym)
 858                                 ),
 859                                 null,
 860                                 out return_value
 861                         );
 862
 863 GLib.debug ("LS replied with %s", Json.to_string (Json.gvariant_serialize (return_value), true));
 864                         return ret;
 865                 }
 866
 867         }
 868
 869
 870
 871
 872
 873
 874
 875
 876 }