1use crate::{
2 CachedLspAdapter, Language, LanguageConfig, LanguageId, LanguageMatcher, LanguageServerName,
3 LspAdapter, LspAdapterDelegate, PARSER, PLAIN_TEXT,
4};
5use anyhow::{anyhow, Context as _, Result};
6use collections::{hash_map, HashMap};
7use futures::{
8 channel::{mpsc, oneshot},
9 future::Shared,
10 Future, FutureExt as _,
11};
12use gpui::{AppContext, BackgroundExecutor, Task};
13use lsp::{LanguageServerBinary, LanguageServerId};
14use parking_lot::{Mutex, RwLock};
15use postage::watch;
16use std::{
17 borrow::Cow,
18 ffi::OsStr,
19 ops::Not,
20 path::{Path, PathBuf},
21 sync::Arc,
22};
23use sum_tree::Bias;
24use text::{Point, Rope};
25use theme::Theme;
26use unicase::UniCase;
27use util::{paths::PathExt, post_inc, ResultExt};
28
29pub struct LanguageRegistry {
30 state: RwLock<LanguageRegistryState>,
31 language_server_download_dir: Option<Arc<Path>>,
32 login_shell_env_loaded: Shared<Task<()>>,
33 #[allow(clippy::type_complexity)]
34 lsp_binary_paths: Mutex<
35 HashMap<LanguageServerName, Shared<Task<Result<LanguageServerBinary, Arc<anyhow::Error>>>>>,
36 >,
37 executor: Option<BackgroundExecutor>,
38 lsp_binary_status_tx: LspBinaryStatusSender,
39}
40
41struct LanguageRegistryState {
42 next_language_server_id: usize,
43 languages: Vec<Arc<Language>>,
44 available_languages: Vec<AvailableLanguage>,
45 grammars: HashMap<Arc<str>, AvailableGrammar>,
46 lsp_adapters: HashMap<Arc<str>, Vec<Arc<CachedLspAdapter>>>,
47 loading_languages: HashMap<LanguageId, Vec<oneshot::Sender<Result<Arc<Language>>>>>,
48 subscription: (watch::Sender<()>, watch::Receiver<()>),
49 theme: Option<Arc<Theme>>,
50 version: usize,
51 reload_count: usize,
52
53 #[cfg(any(test, feature = "test-support"))]
54 fake_server_txs:
55 HashMap<Arc<str>, Vec<futures::channel::mpsc::UnboundedSender<lsp::FakeLanguageServer>>>,
56}
57
58#[derive(Clone, Debug, PartialEq, Eq)]
59pub enum LanguageServerBinaryStatus {
60 CheckingForUpdate,
61 Downloading,
62 Downloaded,
63 Cached,
64 Failed { error: String },
65}
66
67pub struct PendingLanguageServer {
68 pub server_id: LanguageServerId,
69 pub task: Task<Result<lsp::LanguageServer>>,
70 pub container_dir: Option<Arc<Path>>,
71}
72
73#[derive(Clone)]
74struct AvailableLanguage {
75 id: LanguageId,
76 name: Arc<str>,
77 grammar: Option<Arc<str>>,
78 matcher: LanguageMatcher,
79 load: Arc<dyn Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync>,
80 loaded: bool,
81}
82
83enum AvailableGrammar {
84 Native(tree_sitter::Language),
85 Loaded(#[allow(dead_code)] PathBuf, tree_sitter::Language),
86 Loading(PathBuf, Vec<oneshot::Sender<Result<tree_sitter::Language>>>),
87 Unloaded(PathBuf),
88}
89
90pub const QUERY_FILENAME_PREFIXES: &[(
91 &str,
92 fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
93)] = &[
94 ("highlights", |q| &mut q.highlights),
95 ("brackets", |q| &mut q.brackets),
96 ("outline", |q| &mut q.outline),
97 ("indents", |q| &mut q.indents),
98 ("embedding", |q| &mut q.embedding),
99 ("injections", |q| &mut q.injections),
100 ("overrides", |q| &mut q.overrides),
101 ("redactions", |q| &mut q.redactions),
102];
103
104/// Tree-sitter language queries for a given language.
105#[derive(Debug, Default)]
106pub struct LanguageQueries {
107 pub highlights: Option<Cow<'static, str>>,
108 pub brackets: Option<Cow<'static, str>>,
109 pub indents: Option<Cow<'static, str>>,
110 pub outline: Option<Cow<'static, str>>,
111 pub embedding: Option<Cow<'static, str>>,
112 pub injections: Option<Cow<'static, str>>,
113 pub overrides: Option<Cow<'static, str>>,
114 pub redactions: Option<Cow<'static, str>>,
115}
116
117#[derive(Clone, Default)]
118struct LspBinaryStatusSender {
119 txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
120}
121
122impl LanguageRegistry {
123 pub fn new(login_shell_env_loaded: Task<()>) -> Self {
124 Self {
125 state: RwLock::new(LanguageRegistryState {
126 next_language_server_id: 0,
127 languages: vec![PLAIN_TEXT.clone()],
128 available_languages: Default::default(),
129 grammars: Default::default(),
130 loading_languages: Default::default(),
131 lsp_adapters: Default::default(),
132 subscription: watch::channel(),
133 theme: Default::default(),
134 version: 0,
135 reload_count: 0,
136
137 #[cfg(any(test, feature = "test-support"))]
138 fake_server_txs: Default::default(),
139 }),
140 language_server_download_dir: None,
141 login_shell_env_loaded: login_shell_env_loaded.shared(),
142 lsp_binary_paths: Default::default(),
143 executor: None,
144 lsp_binary_status_tx: Default::default(),
145 }
146 }
147
148 #[cfg(any(test, feature = "test-support"))]
149 pub fn test() -> Self {
150 let mut this = Self::new(Task::ready(()));
151 this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
152 this
153 }
154
155 pub fn set_executor(&mut self, executor: BackgroundExecutor) {
156 self.executor = Some(executor);
157 }
158
159 /// Clears out all of the loaded languages and reload them from scratch.
160 pub fn reload(&self) {
161 self.state.write().reload();
162 }
163
164 /// Removes the specified languages and grammars from the registry.
165 pub fn remove_languages(
166 &self,
167 languages_to_remove: &[Arc<str>],
168 grammars_to_remove: &[Arc<str>],
169 ) {
170 self.state
171 .write()
172 .remove_languages(languages_to_remove, grammars_to_remove)
173 }
174
175 pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
176 let mut state = self.state.write();
177 if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
178 adapters.retain(|adapter| &adapter.name != name)
179 }
180 state.version += 1;
181 state.reload_count += 1;
182 *state.subscription.0.borrow_mut() = ();
183 }
184
185 #[cfg(any(feature = "test-support", test))]
186 pub fn register_test_language(&self, config: LanguageConfig) {
187 self.register_language(
188 config.name.clone(),
189 config.grammar.clone(),
190 config.matcher.clone(),
191 move || Ok((config.clone(), Default::default())),
192 )
193 }
194
195 pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
196 self.state
197 .write()
198 .lsp_adapters
199 .entry(language_name)
200 .or_default()
201 .push(CachedLspAdapter::new(adapter));
202 }
203
204 #[cfg(any(feature = "test-support", test))]
205 pub fn register_fake_lsp_adapter(
206 &self,
207 language_name: &str,
208 adapter: crate::FakeLspAdapter,
209 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
210 self.state
211 .write()
212 .lsp_adapters
213 .entry(language_name.into())
214 .or_default()
215 .push(CachedLspAdapter::new(Arc::new(adapter)));
216 self.fake_language_servers(language_name)
217 }
218
219 #[cfg(any(feature = "test-support", test))]
220 pub fn fake_language_servers(
221 &self,
222 language_name: &str,
223 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
224 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
225 self.state
226 .write()
227 .fake_server_txs
228 .entry(language_name.into())
229 .or_default()
230 .push(servers_tx);
231 servers_rx
232 }
233
234 /// Adds a language to the registry, which can be loaded if needed.
235 pub fn register_language(
236 &self,
237 name: Arc<str>,
238 grammar_name: Option<Arc<str>>,
239 matcher: LanguageMatcher,
240 load: impl Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync,
241 ) {
242 let load = Arc::new(load);
243 let state = &mut *self.state.write();
244
245 for existing_language in &mut state.available_languages {
246 if existing_language.name == name {
247 existing_language.grammar = grammar_name;
248 existing_language.matcher = matcher;
249 existing_language.load = load;
250 return;
251 }
252 }
253
254 state.available_languages.push(AvailableLanguage {
255 id: LanguageId::new(),
256 name,
257 grammar: grammar_name,
258 matcher,
259 load,
260 loaded: false,
261 });
262 state.version += 1;
263 state.reload_count += 1;
264 *state.subscription.0.borrow_mut() = ();
265 }
266
267 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
268 /// grammar controls how the source code is parsed.
269 pub fn register_native_grammars(
270 &self,
271 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
272 ) {
273 self.state.write().grammars.extend(
274 grammars
275 .into_iter()
276 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
277 );
278 }
279
280 /// Adds paths to WASM grammar files, which can be loaded if needed.
281 pub fn register_wasm_grammars(
282 &self,
283 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
284 ) {
285 let mut state = self.state.write();
286 state.grammars.extend(
287 grammars
288 .into_iter()
289 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
290 );
291 state.version += 1;
292 state.reload_count += 1;
293 *state.subscription.0.borrow_mut() = ();
294 }
295
296 pub fn language_names(&self) -> Vec<String> {
297 let state = self.state.read();
298 let mut result = state
299 .available_languages
300 .iter()
301 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
302 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
303 .collect::<Vec<_>>();
304 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
305 result
306 }
307
308 pub fn grammar_names(&self) -> Vec<Arc<str>> {
309 let state = self.state.read();
310 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
311 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
312 result
313 }
314
315 pub fn add(&self, language: Arc<Language>) {
316 self.state.write().add(language);
317 }
318
319 pub fn subscribe(&self) -> watch::Receiver<()> {
320 self.state.read().subscription.1.clone()
321 }
322
323 /// Returns the number of times that the registry has been changed,
324 /// by adding languages or reloading.
325 pub fn version(&self) -> usize {
326 self.state.read().version
327 }
328
329 /// Returns the number of times that the registry has been reloaded.
330 pub fn reload_count(&self) -> usize {
331 self.state.read().reload_count
332 }
333
334 pub fn set_theme(&self, theme: Arc<Theme>) {
335 let mut state = self.state.write();
336 state.theme = Some(theme.clone());
337 for language in &state.languages {
338 language.set_theme(theme.syntax());
339 }
340 }
341
342 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
343 self.language_server_download_dir = Some(path.into());
344 }
345
346 pub fn language_for_name(
347 self: &Arc<Self>,
348 name: &str,
349 ) -> impl Future<Output = Result<Arc<Language>>> {
350 let name = UniCase::new(name);
351 let rx = self.get_or_load_language(|language_name, _| UniCase::new(language_name) == name);
352 async move { rx.await? }
353 }
354
355 pub fn language_for_name_or_extension(
356 self: &Arc<Self>,
357 string: &str,
358 ) -> impl Future<Output = Result<Arc<Language>>> {
359 let string = UniCase::new(string);
360 let rx = self.get_or_load_language(|name, config| {
361 UniCase::new(name) == string
362 || config
363 .path_suffixes
364 .iter()
365 .any(|suffix| UniCase::new(suffix) == string)
366 });
367 async move { rx.await? }
368 }
369
370 pub fn language_for_file(
371 self: &Arc<Self>,
372 path: &Path,
373 content: Option<&Rope>,
374 ) -> impl Future<Output = Result<Arc<Language>>> {
375 let filename = path.file_name().and_then(|name| name.to_str());
376 let extension = path.extension_or_hidden_file_name();
377 let path_suffixes = [extension, filename];
378 let rx = self.get_or_load_language(move |_, config| {
379 let path_matches = config
380 .path_suffixes
381 .iter()
382 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
383 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
384 false,
385 |(content, pattern)| {
386 let end = content.clip_point(Point::new(0, 256), Bias::Left);
387 let end = content.point_to_offset(end);
388 let text = content.chunks_in_range(0..end).collect::<String>();
389 pattern.is_match(&text)
390 },
391 );
392 path_matches || content_matches
393 });
394 async move { rx.await? }
395 }
396
397 fn get_or_load_language(
398 self: &Arc<Self>,
399 callback: impl Fn(&str, &LanguageMatcher) -> bool,
400 ) -> oneshot::Receiver<Result<Arc<Language>>> {
401 let (tx, rx) = oneshot::channel();
402
403 let mut state = self.state.write();
404 if let Some(language) = state
405 .languages
406 .iter()
407 .find(|language| callback(language.config.name.as_ref(), &language.config.matcher))
408 {
409 let _ = tx.send(Ok(language.clone()));
410 } else if let Some(executor) = self.executor.clone() {
411 if let Some(language) = state
412 .available_languages
413 .iter()
414 .rfind(|l| !l.loaded && callback(&l.name, &l.matcher))
415 .cloned()
416 {
417 match state.loading_languages.entry(language.id) {
418 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
419 hash_map::Entry::Vacant(entry) => {
420 let this = self.clone();
421 executor
422 .spawn(async move {
423 let id = language.id;
424 let name = language.name.clone();
425 let language = async {
426 let (config, queries) = (language.load)()?;
427
428 let grammar = if let Some(grammar) = config.grammar.clone() {
429 Some(this.get_or_load_grammar(grammar).await?)
430 } else {
431 None
432 };
433
434 Language::new_with_id(id, config, grammar).with_queries(queries)
435 }
436 .await;
437
438 match language {
439 Ok(language) => {
440 let language = Arc::new(language);
441 let mut state = this.state.write();
442
443 state.add(language.clone());
444 state.mark_language_loaded(id);
445 if let Some(mut txs) = state.loading_languages.remove(&id) {
446 for tx in txs.drain(..) {
447 let _ = tx.send(Ok(language.clone()));
448 }
449 }
450 }
451 Err(e) => {
452 log::error!("failed to load language {name}:\n{:?}", e);
453 let mut state = this.state.write();
454 state.mark_language_loaded(id);
455 if let Some(mut txs) = state.loading_languages.remove(&id) {
456 for tx in txs.drain(..) {
457 let _ = tx.send(Err(anyhow!(
458 "failed to load language {}: {}",
459 name,
460 e
461 )));
462 }
463 }
464 }
465 };
466 })
467 .detach();
468 entry.insert(vec![tx]);
469 }
470 }
471 } else {
472 let _ = tx.send(Err(anyhow!("language not found")));
473 }
474 } else {
475 let _ = tx.send(Err(anyhow!("executor does not exist")));
476 }
477
478 rx
479 }
480
481 fn get_or_load_grammar(
482 self: &Arc<Self>,
483 name: Arc<str>,
484 ) -> impl Future<Output = Result<tree_sitter::Language>> {
485 let (tx, rx) = oneshot::channel();
486 let mut state = self.state.write();
487
488 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
489 match grammar {
490 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
491 tx.send(Ok(grammar.clone())).ok();
492 }
493 AvailableGrammar::Loading(_, txs) => {
494 txs.push(tx);
495 }
496 AvailableGrammar::Unloaded(wasm_path) => {
497 if let Some(executor) = &self.executor {
498 let this = self.clone();
499 executor
500 .spawn({
501 let wasm_path = wasm_path.clone();
502 async move {
503 let wasm_bytes = std::fs::read(&wasm_path)?;
504 let grammar_name = wasm_path
505 .file_stem()
506 .and_then(OsStr::to_str)
507 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
508 let grammar = PARSER.with(|parser| {
509 let mut parser = parser.borrow_mut();
510 let mut store = parser.take_wasm_store().unwrap();
511 let grammar =
512 store.load_language(&grammar_name, &wasm_bytes);
513 parser.set_wasm_store(store).unwrap();
514 grammar
515 })?;
516
517 if let Some(AvailableGrammar::Loading(_, txs)) =
518 this.state.write().grammars.insert(
519 name,
520 AvailableGrammar::Loaded(wasm_path, grammar.clone()),
521 )
522 {
523 for tx in txs {
524 tx.send(Ok(grammar.clone())).ok();
525 }
526 }
527
528 anyhow::Ok(())
529 }
530 })
531 .detach();
532 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
533 }
534 }
535 }
536 } else {
537 tx.send(Err(anyhow!("no such grammar {}", name))).ok();
538 }
539
540 async move { rx.await? }
541 }
542
543 pub fn to_vec(&self) -> Vec<Arc<Language>> {
544 self.state.read().languages.iter().cloned().collect()
545 }
546
547 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
548 self.state
549 .read()
550 .lsp_adapters
551 .get(&language.config.name)
552 .cloned()
553 .unwrap_or_default()
554 }
555
556 pub fn update_lsp_status(
557 &self,
558 server_name: LanguageServerName,
559 status: LanguageServerBinaryStatus,
560 ) {
561 self.lsp_binary_status_tx.send(server_name, status);
562 }
563
564 pub fn create_pending_language_server(
565 self: &Arc<Self>,
566 stderr_capture: Arc<Mutex<Option<String>>>,
567 language: Arc<Language>,
568 adapter: Arc<CachedLspAdapter>,
569 root_path: Arc<Path>,
570 delegate: Arc<dyn LspAdapterDelegate>,
571 cx: &mut AppContext,
572 ) -> Option<PendingLanguageServer> {
573 let server_id = self.state.write().next_language_server_id();
574 log::info!(
575 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
576 adapter.name.0
577 );
578
579 let download_dir = self
580 .language_server_download_dir
581 .clone()
582 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
583 .log_err()?;
584 let language = language.clone();
585 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
586 let root_path = root_path.clone();
587 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
588 let this = Arc::downgrade(self);
589
590 let task = cx.spawn({
591 let container_dir = container_dir.clone();
592 move |mut cx| async move {
593 // If we want to install a binary globally, we need to wait for
594 // the login shell to be set on our process.
595 login_shell_env_loaded.await;
596
597 let binary = adapter
598 .clone()
599 .get_language_server_command(
600 language.clone(),
601 container_dir,
602 delegate.clone(),
603 &mut cx,
604 )
605 .await?;
606
607 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
608 task.await?;
609 }
610
611 #[cfg(any(test, feature = "test-support"))]
612 if true {
613 let capabilities = adapter
614 .as_fake()
615 .map(|fake_adapter| fake_adapter.capabilities.clone())
616 .unwrap_or_default();
617
618 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
619 binary,
620 adapter.name.0.to_string(),
621 capabilities,
622 cx.clone(),
623 );
624
625 if let Some(fake_adapter) = adapter.as_fake() {
626 if let Some(initializer) = &fake_adapter.initializer {
627 initializer(&mut fake_server);
628 }
629 }
630
631 cx.background_executor()
632 .spawn(async move {
633 if fake_server
634 .try_receive_notification::<lsp::notification::Initialized>()
635 .await
636 .is_some()
637 {
638 if let Some(this) = this.upgrade() {
639 if let Some(txs) = this
640 .state
641 .write()
642 .fake_server_txs
643 .get_mut(language.name().as_ref())
644 {
645 for tx in txs {
646 tx.unbounded_send(fake_server.clone()).ok();
647 }
648 }
649 }
650 }
651 })
652 .detach();
653
654 return Ok(server);
655 }
656
657 drop(this);
658 lsp::LanguageServer::new(
659 stderr_capture,
660 server_id,
661 binary,
662 &root_path,
663 adapter.code_action_kinds(),
664 cx,
665 )
666 }
667 });
668
669 Some(PendingLanguageServer {
670 server_id,
671 task,
672 container_dir: Some(container_dir),
673 })
674 }
675
676 pub fn language_server_binary_statuses(
677 &self,
678 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
679 self.lsp_binary_status_tx.subscribe()
680 }
681
682 pub fn delete_server_container(
683 &self,
684 adapter: Arc<CachedLspAdapter>,
685 cx: &mut AppContext,
686 ) -> Task<()> {
687 log::info!("deleting server container");
688
689 let mut lock = self.lsp_binary_paths.lock();
690 lock.remove(&adapter.name);
691
692 let download_dir = self
693 .language_server_download_dir
694 .clone()
695 .expect("language server download directory has not been assigned before deleting server container");
696
697 cx.spawn(|_| async move {
698 let container_dir = download_dir.join(adapter.name.0.as_ref());
699 smol::fs::remove_dir_all(container_dir)
700 .await
701 .context("server container removal")
702 .log_err();
703 })
704 }
705
706 pub fn next_language_server_id(&self) -> LanguageServerId {
707 self.state.write().next_language_server_id()
708 }
709}
710
711#[cfg(any(test, feature = "test-support"))]
712impl Default for LanguageRegistry {
713 fn default() -> Self {
714 Self::test()
715 }
716}
717
718impl LanguageRegistryState {
719 fn next_language_server_id(&mut self) -> LanguageServerId {
720 LanguageServerId(post_inc(&mut self.next_language_server_id))
721 }
722
723 fn add(&mut self, language: Arc<Language>) {
724 if let Some(theme) = self.theme.as_ref() {
725 language.set_theme(theme.syntax());
726 }
727 self.languages.push(language);
728 self.version += 1;
729 *self.subscription.0.borrow_mut() = ();
730 }
731
732 fn reload(&mut self) {
733 self.languages.clear();
734 self.version += 1;
735 self.reload_count += 1;
736 for language in &mut self.available_languages {
737 language.loaded = false;
738 }
739 *self.subscription.0.borrow_mut() = ();
740 }
741
742 fn remove_languages(
743 &mut self,
744 languages_to_remove: &[Arc<str>],
745 grammars_to_remove: &[Arc<str>],
746 ) {
747 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
748 return;
749 }
750
751 self.languages
752 .retain(|language| !languages_to_remove.contains(&language.name()));
753 self.available_languages
754 .retain(|language| !languages_to_remove.contains(&language.name));
755 self.grammars
756 .retain(|name, _| !grammars_to_remove.contains(&name));
757 self.version += 1;
758 self.reload_count += 1;
759 *self.subscription.0.borrow_mut() = ();
760 }
761
762 /// Mark the given language as having been loaded, so that the
763 /// language registry won't try to load it again.
764 fn mark_language_loaded(&mut self, id: LanguageId) {
765 for language in &mut self.available_languages {
766 if language.id == id {
767 language.loaded = true;
768 break;
769 }
770 }
771 }
772}
773
774impl LspBinaryStatusSender {
775 fn subscribe(
776 &self,
777 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
778 let (tx, rx) = mpsc::unbounded();
779 self.txs.lock().push(tx);
780 rx
781 }
782
783 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
784 let mut txs = self.txs.lock();
785 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
786 }
787}