1use crate::{
2 CachedLspAdapter, Language, LanguageConfig, LanguageContextProvider, LanguageId,
3 LanguageMatcher, LanguageServerName, 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 context_provider: Option<Arc<dyn LanguageContextProvider>>,
82}
83
84enum AvailableGrammar {
85 Native(tree_sitter::Language),
86 Loaded(#[allow(dead_code)] PathBuf, tree_sitter::Language),
87 Loading(PathBuf, Vec<oneshot::Sender<Result<tree_sitter::Language>>>),
88 Unloaded(PathBuf),
89}
90
91pub const QUERY_FILENAME_PREFIXES: &[(
92 &str,
93 fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
94)] = &[
95 ("highlights", |q| &mut q.highlights),
96 ("brackets", |q| &mut q.brackets),
97 ("outline", |q| &mut q.outline),
98 ("indents", |q| &mut q.indents),
99 ("embedding", |q| &mut q.embedding),
100 ("injections", |q| &mut q.injections),
101 ("overrides", |q| &mut q.overrides),
102 ("redactions", |q| &mut q.redactions),
103];
104
105/// Tree-sitter language queries for a given language.
106#[derive(Debug, Default)]
107pub struct LanguageQueries {
108 pub highlights: Option<Cow<'static, str>>,
109 pub brackets: Option<Cow<'static, str>>,
110 pub indents: Option<Cow<'static, str>>,
111 pub outline: Option<Cow<'static, str>>,
112 pub embedding: Option<Cow<'static, str>>,
113 pub injections: Option<Cow<'static, str>>,
114 pub overrides: Option<Cow<'static, str>>,
115 pub redactions: Option<Cow<'static, str>>,
116}
117
118#[derive(Clone, Default)]
119struct LspBinaryStatusSender {
120 txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
121}
122
123impl LanguageRegistry {
124 pub fn new(login_shell_env_loaded: Task<()>) -> Self {
125 Self {
126 state: RwLock::new(LanguageRegistryState {
127 next_language_server_id: 0,
128 languages: vec![PLAIN_TEXT.clone()],
129 available_languages: Default::default(),
130 grammars: Default::default(),
131 loading_languages: Default::default(),
132 lsp_adapters: Default::default(),
133 subscription: watch::channel(),
134 theme: Default::default(),
135 version: 0,
136 reload_count: 0,
137
138 #[cfg(any(test, feature = "test-support"))]
139 fake_server_txs: Default::default(),
140 }),
141 language_server_download_dir: None,
142 login_shell_env_loaded: login_shell_env_loaded.shared(),
143 lsp_binary_paths: Default::default(),
144 executor: None,
145 lsp_binary_status_tx: Default::default(),
146 }
147 }
148
149 #[cfg(any(test, feature = "test-support"))]
150 pub fn test() -> Self {
151 let mut this = Self::new(Task::ready(()));
152 this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
153 this
154 }
155
156 pub fn set_executor(&mut self, executor: BackgroundExecutor) {
157 self.executor = Some(executor);
158 }
159
160 /// Clears out all of the loaded languages and reload them from scratch.
161 pub fn reload(&self) {
162 self.state.write().reload();
163 }
164
165 /// Removes the specified languages and grammars from the registry.
166 pub fn remove_languages(
167 &self,
168 languages_to_remove: &[Arc<str>],
169 grammars_to_remove: &[Arc<str>],
170 ) {
171 self.state
172 .write()
173 .remove_languages(languages_to_remove, grammars_to_remove)
174 }
175
176 pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
177 let mut state = self.state.write();
178 if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
179 adapters.retain(|adapter| &adapter.name != name)
180 }
181 state.version += 1;
182 state.reload_count += 1;
183 *state.subscription.0.borrow_mut() = ();
184 }
185
186 #[cfg(any(feature = "test-support", test))]
187 pub fn register_test_language(&self, config: LanguageConfig) {
188 self.register_language(
189 config.name.clone(),
190 config.grammar.clone(),
191 config.matcher.clone(),
192 None,
193 move || Ok((config.clone(), Default::default())),
194 )
195 }
196
197 pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
198 self.state
199 .write()
200 .lsp_adapters
201 .entry(language_name)
202 .or_default()
203 .push(CachedLspAdapter::new(adapter));
204 }
205
206 #[cfg(any(feature = "test-support", test))]
207 pub fn register_fake_lsp_adapter(
208 &self,
209 language_name: &str,
210 adapter: crate::FakeLspAdapter,
211 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
212 self.state
213 .write()
214 .lsp_adapters
215 .entry(language_name.into())
216 .or_default()
217 .push(CachedLspAdapter::new(Arc::new(adapter)));
218 self.fake_language_servers(language_name)
219 }
220
221 #[cfg(any(feature = "test-support", test))]
222 pub fn fake_language_servers(
223 &self,
224 language_name: &str,
225 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
226 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
227 self.state
228 .write()
229 .fake_server_txs
230 .entry(language_name.into())
231 .or_default()
232 .push(servers_tx);
233 servers_rx
234 }
235
236 /// Adds a language to the registry, which can be loaded if needed.
237 pub fn register_language(
238 &self,
239 name: Arc<str>,
240 grammar_name: Option<Arc<str>>,
241 matcher: LanguageMatcher,
242 context_provider: Option<Arc<dyn LanguageContextProvider>>,
243 load: impl Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync,
244 ) {
245 let load = Arc::new(load);
246 let state = &mut *self.state.write();
247
248 for existing_language in &mut state.available_languages {
249 if existing_language.name == name {
250 existing_language.grammar = grammar_name;
251 existing_language.matcher = matcher;
252 existing_language.load = load;
253 return;
254 }
255 }
256
257 state.available_languages.push(AvailableLanguage {
258 id: LanguageId::new(),
259 name,
260 grammar: grammar_name,
261 matcher,
262 load,
263
264 context_provider,
265 loaded: false,
266 });
267 state.version += 1;
268 state.reload_count += 1;
269 *state.subscription.0.borrow_mut() = ();
270 }
271
272 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
273 /// grammar controls how the source code is parsed.
274 pub fn register_native_grammars(
275 &self,
276 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
277 ) {
278 self.state.write().grammars.extend(
279 grammars
280 .into_iter()
281 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
282 );
283 }
284
285 /// Adds paths to WASM grammar files, which can be loaded if needed.
286 pub fn register_wasm_grammars(
287 &self,
288 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
289 ) {
290 let mut state = self.state.write();
291 state.grammars.extend(
292 grammars
293 .into_iter()
294 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
295 );
296 state.version += 1;
297 state.reload_count += 1;
298 *state.subscription.0.borrow_mut() = ();
299 }
300
301 pub fn language_names(&self) -> Vec<String> {
302 let state = self.state.read();
303 let mut result = state
304 .available_languages
305 .iter()
306 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
307 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
308 .collect::<Vec<_>>();
309 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
310 result
311 }
312
313 pub fn grammar_names(&self) -> Vec<Arc<str>> {
314 let state = self.state.read();
315 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
316 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
317 result
318 }
319
320 pub fn add(&self, language: Arc<Language>) {
321 self.state.write().add(language);
322 }
323
324 pub fn subscribe(&self) -> watch::Receiver<()> {
325 self.state.read().subscription.1.clone()
326 }
327
328 /// Returns the number of times that the registry has been changed,
329 /// by adding languages or reloading.
330 pub fn version(&self) -> usize {
331 self.state.read().version
332 }
333
334 /// Returns the number of times that the registry has been reloaded.
335 pub fn reload_count(&self) -> usize {
336 self.state.read().reload_count
337 }
338
339 pub fn set_theme(&self, theme: Arc<Theme>) {
340 let mut state = self.state.write();
341 state.theme = Some(theme.clone());
342 for language in &state.languages {
343 language.set_theme(theme.syntax());
344 }
345 }
346
347 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
348 self.language_server_download_dir = Some(path.into());
349 }
350
351 pub fn language_for_name(
352 self: &Arc<Self>,
353 name: &str,
354 ) -> impl Future<Output = Result<Arc<Language>>> {
355 let name = UniCase::new(name);
356 let rx = self.get_or_load_language(|language_name, _| UniCase::new(language_name) == name);
357 async move { rx.await? }
358 }
359
360 pub fn language_for_name_or_extension(
361 self: &Arc<Self>,
362 string: &str,
363 ) -> impl Future<Output = Result<Arc<Language>>> {
364 let string = UniCase::new(string);
365 let rx = self.get_or_load_language(|name, config| {
366 UniCase::new(name) == string
367 || config
368 .path_suffixes
369 .iter()
370 .any(|suffix| UniCase::new(suffix) == string)
371 });
372 async move { rx.await? }
373 }
374
375 pub fn language_for_file(
376 self: &Arc<Self>,
377 path: &Path,
378 content: Option<&Rope>,
379 ) -> impl Future<Output = Result<Arc<Language>>> {
380 let filename = path.file_name().and_then(|name| name.to_str());
381 let extension = path.extension_or_hidden_file_name();
382 let path_suffixes = [extension, filename];
383 let rx = self.get_or_load_language(move |_, config| {
384 let path_matches = config
385 .path_suffixes
386 .iter()
387 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
388 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
389 false,
390 |(content, pattern)| {
391 let end = content.clip_point(Point::new(0, 256), Bias::Left);
392 let end = content.point_to_offset(end);
393 let text = content.chunks_in_range(0..end).collect::<String>();
394 pattern.is_match(&text)
395 },
396 );
397 path_matches || content_matches
398 });
399 async move { rx.await? }
400 }
401
402 fn get_or_load_language(
403 self: &Arc<Self>,
404 callback: impl Fn(&str, &LanguageMatcher) -> bool,
405 ) -> oneshot::Receiver<Result<Arc<Language>>> {
406 let (tx, rx) = oneshot::channel();
407
408 let mut state = self.state.write();
409 if let Some(language) = state
410 .languages
411 .iter()
412 .find(|language| callback(language.config.name.as_ref(), &language.config.matcher))
413 {
414 let _ = tx.send(Ok(language.clone()));
415 } else if let Some(executor) = self.executor.clone() {
416 if let Some(language) = state
417 .available_languages
418 .iter()
419 .rfind(|l| !l.loaded && callback(&l.name, &l.matcher))
420 .cloned()
421 {
422 match state.loading_languages.entry(language.id) {
423 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
424 hash_map::Entry::Vacant(entry) => {
425 let this = self.clone();
426 executor
427 .spawn(async move {
428 let id = language.id;
429 let name = language.name.clone();
430 let provider = language.context_provider.clone();
431 let language = async {
432 let (config, queries) = (language.load)()?;
433
434 let grammar = if let Some(grammar) = config.grammar.clone() {
435 Some(this.get_or_load_grammar(grammar).await?)
436 } else {
437 None
438 };
439
440 Language::new_with_id(id, config, grammar)
441 .with_context_provider(provider)
442 .with_queries(queries)
443 }
444 .await;
445
446 match language {
447 Ok(language) => {
448 let language = Arc::new(language);
449 let mut state = this.state.write();
450
451 state.add(language.clone());
452 state.mark_language_loaded(id);
453 if let Some(mut txs) = state.loading_languages.remove(&id) {
454 for tx in txs.drain(..) {
455 let _ = tx.send(Ok(language.clone()));
456 }
457 }
458 }
459 Err(e) => {
460 log::error!("failed to load language {name}:\n{:?}", e);
461 let mut state = this.state.write();
462 state.mark_language_loaded(id);
463 if let Some(mut txs) = state.loading_languages.remove(&id) {
464 for tx in txs.drain(..) {
465 let _ = tx.send(Err(anyhow!(
466 "failed to load language {}: {}",
467 name,
468 e
469 )));
470 }
471 }
472 }
473 };
474 })
475 .detach();
476 entry.insert(vec![tx]);
477 }
478 }
479 } else {
480 let _ = tx.send(Err(anyhow!("language not found")));
481 }
482 } else {
483 let _ = tx.send(Err(anyhow!("executor does not exist")));
484 }
485
486 rx
487 }
488
489 fn get_or_load_grammar(
490 self: &Arc<Self>,
491 name: Arc<str>,
492 ) -> impl Future<Output = Result<tree_sitter::Language>> {
493 let (tx, rx) = oneshot::channel();
494 let mut state = self.state.write();
495
496 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
497 match grammar {
498 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
499 tx.send(Ok(grammar.clone())).ok();
500 }
501 AvailableGrammar::Loading(_, txs) => {
502 txs.push(tx);
503 }
504 AvailableGrammar::Unloaded(wasm_path) => {
505 if let Some(executor) = &self.executor {
506 let this = self.clone();
507 executor
508 .spawn({
509 let wasm_path = wasm_path.clone();
510 async move {
511 let wasm_bytes = std::fs::read(&wasm_path)?;
512 let grammar_name = wasm_path
513 .file_stem()
514 .and_then(OsStr::to_str)
515 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
516 let grammar = PARSER.with(|parser| {
517 let mut parser = parser.borrow_mut();
518 let mut store = parser.take_wasm_store().unwrap();
519 let grammar =
520 store.load_language(&grammar_name, &wasm_bytes);
521 parser.set_wasm_store(store).unwrap();
522 grammar
523 })?;
524
525 if let Some(AvailableGrammar::Loading(_, txs)) =
526 this.state.write().grammars.insert(
527 name,
528 AvailableGrammar::Loaded(wasm_path, grammar.clone()),
529 )
530 {
531 for tx in txs {
532 tx.send(Ok(grammar.clone())).ok();
533 }
534 }
535
536 anyhow::Ok(())
537 }
538 })
539 .detach();
540 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
541 }
542 }
543 }
544 } else {
545 tx.send(Err(anyhow!("no such grammar {}", name))).ok();
546 }
547
548 async move { rx.await? }
549 }
550
551 pub fn to_vec(&self) -> Vec<Arc<Language>> {
552 self.state.read().languages.iter().cloned().collect()
553 }
554
555 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
556 self.state
557 .read()
558 .lsp_adapters
559 .get(&language.config.name)
560 .cloned()
561 .unwrap_or_default()
562 }
563
564 pub fn update_lsp_status(
565 &self,
566 server_name: LanguageServerName,
567 status: LanguageServerBinaryStatus,
568 ) {
569 self.lsp_binary_status_tx.send(server_name, status);
570 }
571
572 pub fn create_pending_language_server(
573 self: &Arc<Self>,
574 stderr_capture: Arc<Mutex<Option<String>>>,
575 language: Arc<Language>,
576 adapter: Arc<CachedLspAdapter>,
577 root_path: Arc<Path>,
578 delegate: Arc<dyn LspAdapterDelegate>,
579 cx: &mut AppContext,
580 ) -> Option<PendingLanguageServer> {
581 let server_id = self.state.write().next_language_server_id();
582 log::info!(
583 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
584 adapter.name.0
585 );
586
587 let download_dir = self
588 .language_server_download_dir
589 .clone()
590 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
591 .log_err()?;
592 let language = language.clone();
593 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
594 let root_path = root_path.clone();
595 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
596 let this = Arc::downgrade(self);
597
598 let task = cx.spawn({
599 let container_dir = container_dir.clone();
600 move |mut cx| async move {
601 // If we want to install a binary globally, we need to wait for
602 // the login shell to be set on our process.
603 login_shell_env_loaded.await;
604
605 let binary = adapter
606 .clone()
607 .get_language_server_command(
608 language.clone(),
609 container_dir,
610 delegate.clone(),
611 &mut cx,
612 )
613 .await?;
614
615 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
616 task.await?;
617 }
618
619 #[cfg(any(test, feature = "test-support"))]
620 if true {
621 let capabilities = adapter
622 .as_fake()
623 .map(|fake_adapter| fake_adapter.capabilities.clone())
624 .unwrap_or_default();
625
626 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
627 binary,
628 adapter.name.0.to_string(),
629 capabilities,
630 cx.clone(),
631 );
632
633 if let Some(fake_adapter) = adapter.as_fake() {
634 if let Some(initializer) = &fake_adapter.initializer {
635 initializer(&mut fake_server);
636 }
637 }
638
639 cx.background_executor()
640 .spawn(async move {
641 if fake_server
642 .try_receive_notification::<lsp::notification::Initialized>()
643 .await
644 .is_some()
645 {
646 if let Some(this) = this.upgrade() {
647 if let Some(txs) = this
648 .state
649 .write()
650 .fake_server_txs
651 .get_mut(language.name().as_ref())
652 {
653 for tx in txs {
654 tx.unbounded_send(fake_server.clone()).ok();
655 }
656 }
657 }
658 }
659 })
660 .detach();
661
662 return Ok(server);
663 }
664
665 drop(this);
666 lsp::LanguageServer::new(
667 stderr_capture,
668 server_id,
669 binary,
670 &root_path,
671 adapter.code_action_kinds(),
672 cx,
673 )
674 }
675 });
676
677 Some(PendingLanguageServer {
678 server_id,
679 task,
680 container_dir: Some(container_dir),
681 })
682 }
683
684 pub fn language_server_binary_statuses(
685 &self,
686 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
687 self.lsp_binary_status_tx.subscribe()
688 }
689
690 pub fn delete_server_container(
691 &self,
692 adapter: Arc<CachedLspAdapter>,
693 cx: &mut AppContext,
694 ) -> Task<()> {
695 log::info!("deleting server container");
696
697 let mut lock = self.lsp_binary_paths.lock();
698 lock.remove(&adapter.name);
699
700 let download_dir = self
701 .language_server_download_dir
702 .clone()
703 .expect("language server download directory has not been assigned before deleting server container");
704
705 cx.spawn(|_| async move {
706 let container_dir = download_dir.join(adapter.name.0.as_ref());
707 smol::fs::remove_dir_all(container_dir)
708 .await
709 .context("server container removal")
710 .log_err();
711 })
712 }
713
714 pub fn next_language_server_id(&self) -> LanguageServerId {
715 self.state.write().next_language_server_id()
716 }
717}
718
719#[cfg(any(test, feature = "test-support"))]
720impl Default for LanguageRegistry {
721 fn default() -> Self {
722 Self::test()
723 }
724}
725
726impl LanguageRegistryState {
727 fn next_language_server_id(&mut self) -> LanguageServerId {
728 LanguageServerId(post_inc(&mut self.next_language_server_id))
729 }
730
731 fn add(&mut self, language: Arc<Language>) {
732 if let Some(theme) = self.theme.as_ref() {
733 language.set_theme(theme.syntax());
734 }
735 self.languages.push(language);
736 self.version += 1;
737 *self.subscription.0.borrow_mut() = ();
738 }
739
740 fn reload(&mut self) {
741 self.languages.clear();
742 self.version += 1;
743 self.reload_count += 1;
744 for language in &mut self.available_languages {
745 language.loaded = false;
746 }
747 *self.subscription.0.borrow_mut() = ();
748 }
749
750 fn remove_languages(
751 &mut self,
752 languages_to_remove: &[Arc<str>],
753 grammars_to_remove: &[Arc<str>],
754 ) {
755 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
756 return;
757 }
758
759 self.languages
760 .retain(|language| !languages_to_remove.contains(&language.name()));
761 self.available_languages
762 .retain(|language| !languages_to_remove.contains(&language.name));
763 self.grammars
764 .retain(|name, _| !grammars_to_remove.contains(&name));
765 self.version += 1;
766 self.reload_count += 1;
767 *self.subscription.0.borrow_mut() = ();
768 }
769
770 /// Mark the given language as having been loaded, so that the
771 /// language registry won't try to load it again.
772 fn mark_language_loaded(&mut self, id: LanguageId) {
773 for language in &mut self.available_languages {
774 if language.id == id {
775 language.loaded = true;
776 break;
777 }
778 }
779 }
780}
781
782impl LspBinaryStatusSender {
783 fn subscribe(
784 &self,
785 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
786 let (tx, rx) = mpsc::unbounded();
787 self.txs.lock().push(tx);
788 rx
789 }
790
791 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
792 let mut txs = self.txs.lock();
793 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
794 }
795}