1use crate::{
2 language_settings::all_language_settings, CachedLspAdapter, File, Language, LanguageConfig,
3 LanguageContextProvider, LanguageId, LanguageMatcher, LanguageServerName, LspAdapter,
4 LspAdapterDelegate, PARSER, PLAIN_TEXT,
5};
6use anyhow::{anyhow, Context as _, Result};
7use collections::{hash_map, HashMap};
8use futures::{
9 channel::{mpsc, oneshot},
10 future::Shared,
11 Future, FutureExt as _,
12};
13use gpui::{AppContext, BackgroundExecutor, Task};
14use lsp::LanguageServerId;
15use parking_lot::{Mutex, RwLock};
16use postage::watch;
17use std::{
18 borrow::Cow,
19 ffi::OsStr,
20 ops::Not,
21 path::{Path, PathBuf},
22 sync::Arc,
23};
24use sum_tree::Bias;
25use text::{Point, Rope};
26use theme::Theme;
27use unicase::UniCase;
28use util::{paths::PathExt, post_inc, ResultExt};
29
30pub struct LanguageRegistry {
31 state: RwLock<LanguageRegistryState>,
32 language_server_download_dir: Option<Arc<Path>>,
33 login_shell_env_loaded: Shared<Task<()>>,
34 executor: BackgroundExecutor,
35 lsp_binary_status_tx: LspBinaryStatusSender,
36}
37
38struct LanguageRegistryState {
39 next_language_server_id: usize,
40 languages: Vec<Arc<Language>>,
41 available_languages: Vec<AvailableLanguage>,
42 grammars: HashMap<Arc<str>, AvailableGrammar>,
43 lsp_adapters: HashMap<Arc<str>, Vec<Arc<CachedLspAdapter>>>,
44 loading_languages: HashMap<LanguageId, Vec<oneshot::Sender<Result<Arc<Language>>>>>,
45 subscription: (watch::Sender<()>, watch::Receiver<()>),
46 theme: Option<Arc<Theme>>,
47 version: usize,
48 reload_count: usize,
49
50 #[cfg(any(test, feature = "test-support"))]
51 fake_server_txs:
52 HashMap<Arc<str>, Vec<futures::channel::mpsc::UnboundedSender<lsp::FakeLanguageServer>>>,
53}
54
55#[derive(Clone, Debug, PartialEq, Eq)]
56pub enum LanguageServerBinaryStatus {
57 CheckingForUpdate,
58 Downloading,
59 Downloaded,
60 Cached,
61 Failed { error: String },
62}
63
64pub struct PendingLanguageServer {
65 pub server_id: LanguageServerId,
66 pub task: Task<Result<lsp::LanguageServer>>,
67 pub container_dir: Option<Arc<Path>>,
68}
69
70#[derive(Clone)]
71struct AvailableLanguage {
72 id: LanguageId,
73 name: Arc<str>,
74 grammar: Option<Arc<str>>,
75 matcher: LanguageMatcher,
76 load: Arc<dyn Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync>,
77 loaded: bool,
78 context_provider: Option<Arc<dyn LanguageContextProvider>>,
79}
80
81enum AvailableGrammar {
82 Native(tree_sitter::Language),
83 Loaded(#[allow(dead_code)] PathBuf, tree_sitter::Language),
84 Loading(PathBuf, Vec<oneshot::Sender<Result<tree_sitter::Language>>>),
85 Unloaded(PathBuf),
86}
87
88#[derive(Debug)]
89pub struct LanguageNotFound;
90
91impl std::fmt::Display for LanguageNotFound {
92 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
93 write!(f, "language not found")
94 }
95}
96
97pub const QUERY_FILENAME_PREFIXES: &[(
98 &str,
99 fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
100)] = &[
101 ("highlights", |q| &mut q.highlights),
102 ("brackets", |q| &mut q.brackets),
103 ("outline", |q| &mut q.outline),
104 ("indents", |q| &mut q.indents),
105 ("embedding", |q| &mut q.embedding),
106 ("injections", |q| &mut q.injections),
107 ("overrides", |q| &mut q.overrides),
108 ("redactions", |q| &mut q.redactions),
109];
110
111/// Tree-sitter language queries for a given language.
112#[derive(Debug, Default)]
113pub struct LanguageQueries {
114 pub highlights: Option<Cow<'static, str>>,
115 pub brackets: Option<Cow<'static, str>>,
116 pub indents: Option<Cow<'static, str>>,
117 pub outline: Option<Cow<'static, str>>,
118 pub embedding: Option<Cow<'static, str>>,
119 pub injections: Option<Cow<'static, str>>,
120 pub overrides: Option<Cow<'static, str>>,
121 pub redactions: Option<Cow<'static, str>>,
122}
123
124#[derive(Clone, Default)]
125struct LspBinaryStatusSender {
126 txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
127}
128
129impl LanguageRegistry {
130 pub fn new(login_shell_env_loaded: Task<()>, executor: BackgroundExecutor) -> Self {
131 let this = Self {
132 state: RwLock::new(LanguageRegistryState {
133 next_language_server_id: 0,
134 languages: Vec::new(),
135 available_languages: Vec::new(),
136 grammars: Default::default(),
137 loading_languages: Default::default(),
138 lsp_adapters: Default::default(),
139 subscription: watch::channel(),
140 theme: Default::default(),
141 version: 0,
142 reload_count: 0,
143
144 #[cfg(any(test, feature = "test-support"))]
145 fake_server_txs: Default::default(),
146 }),
147 language_server_download_dir: None,
148 login_shell_env_loaded: login_shell_env_loaded.shared(),
149 lsp_binary_status_tx: Default::default(),
150 executor,
151 };
152 this.add(PLAIN_TEXT.clone());
153 this
154 }
155
156 #[cfg(any(test, feature = "test-support"))]
157 pub fn test(executor: BackgroundExecutor) -> Self {
158 let mut this = Self::new(Task::ready(()), executor);
159 this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
160 this
161 }
162
163 /// Clears out all of the loaded languages and reload them from scratch.
164 pub fn reload(&self) {
165 self.state.write().reload();
166 }
167
168 /// Removes the specified languages and grammars from the registry.
169 pub fn remove_languages(
170 &self,
171 languages_to_remove: &[Arc<str>],
172 grammars_to_remove: &[Arc<str>],
173 ) {
174 self.state
175 .write()
176 .remove_languages(languages_to_remove, grammars_to_remove)
177 }
178
179 pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
180 let mut state = self.state.write();
181 if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
182 adapters.retain(|adapter| &adapter.name != name)
183 }
184 state.version += 1;
185 state.reload_count += 1;
186 *state.subscription.0.borrow_mut() = ();
187 }
188
189 #[cfg(any(feature = "test-support", test))]
190 pub fn register_test_language(&self, config: LanguageConfig) {
191 self.register_language(
192 config.name.clone(),
193 config.grammar.clone(),
194 config.matcher.clone(),
195 None,
196 move || Ok((config.clone(), Default::default())),
197 )
198 }
199
200 pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
201 self.state
202 .write()
203 .lsp_adapters
204 .entry(language_name)
205 .or_default()
206 .push(CachedLspAdapter::new(adapter));
207 }
208
209 #[cfg(any(feature = "test-support", test))]
210 pub fn register_fake_lsp_adapter(
211 &self,
212 language_name: &str,
213 adapter: crate::FakeLspAdapter,
214 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
215 self.state
216 .write()
217 .lsp_adapters
218 .entry(language_name.into())
219 .or_default()
220 .push(CachedLspAdapter::new(Arc::new(adapter)));
221 self.fake_language_servers(language_name)
222 }
223
224 #[cfg(any(feature = "test-support", test))]
225 pub fn fake_language_servers(
226 &self,
227 language_name: &str,
228 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
229 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
230 self.state
231 .write()
232 .fake_server_txs
233 .entry(language_name.into())
234 .or_default()
235 .push(servers_tx);
236 servers_rx
237 }
238
239 /// Adds a language to the registry, which can be loaded if needed.
240 pub fn register_language(
241 &self,
242 name: Arc<str>,
243 grammar_name: Option<Arc<str>>,
244 matcher: LanguageMatcher,
245 context_provider: Option<Arc<dyn LanguageContextProvider>>,
246 load: impl Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync,
247 ) {
248 let load = Arc::new(load);
249 let state = &mut *self.state.write();
250
251 for existing_language in &mut state.available_languages {
252 if existing_language.name == name {
253 existing_language.grammar = grammar_name;
254 existing_language.matcher = matcher;
255 existing_language.load = load;
256 return;
257 }
258 }
259
260 state.available_languages.push(AvailableLanguage {
261 id: LanguageId::new(),
262 name,
263 grammar: grammar_name,
264 matcher,
265 load,
266
267 context_provider,
268 loaded: false,
269 });
270 state.version += 1;
271 state.reload_count += 1;
272 *state.subscription.0.borrow_mut() = ();
273 }
274
275 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
276 /// grammar controls how the source code is parsed.
277 pub fn register_native_grammars(
278 &self,
279 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
280 ) {
281 self.state.write().grammars.extend(
282 grammars
283 .into_iter()
284 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
285 );
286 }
287
288 /// Adds paths to WASM grammar files, which can be loaded if needed.
289 pub fn register_wasm_grammars(
290 &self,
291 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
292 ) {
293 let mut state = self.state.write();
294 state.grammars.extend(
295 grammars
296 .into_iter()
297 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
298 );
299 state.version += 1;
300 state.reload_count += 1;
301 *state.subscription.0.borrow_mut() = ();
302 }
303
304 pub fn language_names(&self) -> Vec<String> {
305 let state = self.state.read();
306 let mut result = state
307 .available_languages
308 .iter()
309 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
310 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
311 .collect::<Vec<_>>();
312 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
313 result
314 }
315
316 pub fn grammar_names(&self) -> Vec<Arc<str>> {
317 let state = self.state.read();
318 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
319 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
320 result
321 }
322
323 /// Add a pre-loaded language to the registry.
324 pub fn add(&self, language: Arc<Language>) {
325 let mut state = self.state.write();
326 state.available_languages.push(AvailableLanguage {
327 id: language.id,
328 name: language.name(),
329 grammar: language.config.grammar.clone(),
330 matcher: language.config.matcher.clone(),
331 load: Arc::new(|| Err(anyhow!("already loaded"))),
332 loaded: true,
333 context_provider: language.context_provider.clone(),
334 });
335 state.add(language);
336 }
337
338 pub fn subscribe(&self) -> watch::Receiver<()> {
339 self.state.read().subscription.1.clone()
340 }
341
342 /// Returns the number of times that the registry has been changed,
343 /// by adding languages or reloading.
344 pub fn version(&self) -> usize {
345 self.state.read().version
346 }
347
348 /// Returns the number of times that the registry has been reloaded.
349 pub fn reload_count(&self) -> usize {
350 self.state.read().reload_count
351 }
352
353 pub fn set_theme(&self, theme: Arc<Theme>) {
354 let mut state = self.state.write();
355 state.theme = Some(theme.clone());
356 for language in &state.languages {
357 language.set_theme(theme.syntax());
358 }
359 }
360
361 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
362 self.language_server_download_dir = Some(path.into());
363 }
364
365 pub fn language_for_name(
366 self: &Arc<Self>,
367 name: &str,
368 ) -> impl Future<Output = Result<Arc<Language>>> {
369 let name = UniCase::new(name);
370 let rx = self.get_or_load_language(|language_name, _| {
371 if UniCase::new(language_name) == name {
372 1
373 } else {
374 0
375 }
376 });
377 async move { rx.await? }
378 }
379
380 pub fn language_for_name_or_extension(
381 self: &Arc<Self>,
382 string: &str,
383 ) -> impl Future<Output = Result<Arc<Language>>> {
384 let string = UniCase::new(string);
385 let rx = self.get_or_load_language(|name, config| {
386 if UniCase::new(name) == string
387 || config
388 .path_suffixes
389 .iter()
390 .any(|suffix| UniCase::new(suffix) == string)
391 {
392 1
393 } else {
394 0
395 }
396 });
397 async move { rx.await? }
398 }
399
400 pub fn language_for_file(
401 self: &Arc<Self>,
402 file: &Arc<dyn File>,
403 content: Option<&Rope>,
404 cx: &AppContext,
405 ) -> impl Future<Output = Result<Arc<Language>>> {
406 let user_file_types = all_language_settings(Some(file), cx);
407 self.language_for_file_internal(
408 &file.full_path(cx),
409 content,
410 Some(&user_file_types.file_types),
411 )
412 }
413
414 pub fn language_for_file_path(
415 self: &Arc<Self>,
416 path: &Path,
417 ) -> impl Future<Output = Result<Arc<Language>>> {
418 self.language_for_file_internal(path, None, None)
419 }
420
421 fn language_for_file_internal(
422 self: &Arc<Self>,
423 path: &Path,
424 content: Option<&Rope>,
425 user_file_types: Option<&HashMap<Arc<str>, Vec<String>>>,
426 ) -> impl Future<Output = Result<Arc<Language>>> {
427 let filename = path.file_name().and_then(|name| name.to_str());
428 let extension = path.extension_or_hidden_file_name();
429 let path_suffixes = [extension, filename];
430 let empty = Vec::new();
431
432 let rx = self.get_or_load_language(move |language_name, config| {
433 let path_matches_default_suffix = config
434 .path_suffixes
435 .iter()
436 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
437 let path_matches_custom_suffix = user_file_types
438 .and_then(|types| types.get(language_name))
439 .unwrap_or(&empty)
440 .iter()
441 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
442 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
443 false,
444 |(content, pattern)| {
445 let end = content.clip_point(Point::new(0, 256), Bias::Left);
446 let end = content.point_to_offset(end);
447 let text = content.chunks_in_range(0..end).collect::<String>();
448 pattern.is_match(&text)
449 },
450 );
451 if path_matches_custom_suffix {
452 2
453 } else if path_matches_default_suffix || content_matches {
454 1
455 } else {
456 0
457 }
458 });
459 async move { rx.await? }
460 }
461
462 fn get_or_load_language(
463 self: &Arc<Self>,
464 callback: impl Fn(&str, &LanguageMatcher) -> usize,
465 ) -> oneshot::Receiver<Result<Arc<Language>>> {
466 let (tx, rx) = oneshot::channel();
467
468 let mut state = self.state.write();
469 let Some((language, _)) = state
470 .available_languages
471 .iter()
472 .filter_map(|language| {
473 let score = callback(&language.name, &language.matcher);
474 if score > 0 {
475 Some((language.clone(), score))
476 } else {
477 None
478 }
479 })
480 .max_by_key(|e| e.1)
481 .clone()
482 else {
483 let _ = tx.send(Err(anyhow!(LanguageNotFound)));
484 return rx;
485 };
486
487 // If the language is already loaded, resolve with it immediately.
488 for loaded_language in state.languages.iter() {
489 if loaded_language.id == language.id {
490 let _ = tx.send(Ok(loaded_language.clone()));
491 return rx;
492 }
493 }
494
495 match state.loading_languages.entry(language.id) {
496 // If the language is already being loaded, then add this
497 // channel to a list that will be sent to when the load completes.
498 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
499
500 // Otherwise, start loading the language.
501 hash_map::Entry::Vacant(entry) => {
502 let this = self.clone();
503 self.executor
504 .spawn(async move {
505 let id = language.id;
506 let name = language.name.clone();
507 let provider = language.context_provider.clone();
508 let language = async {
509 let (config, queries) = (language.load)()?;
510
511 if let Some(grammar) = config.grammar.clone() {
512 let grammar = Some(this.get_or_load_grammar(grammar).await?);
513 Language::new_with_id(id, config, grammar)
514 .with_context_provider(provider)
515 .with_queries(queries)
516 } else {
517 Ok(Language::new_with_id(id, config, None)
518 .with_context_provider(provider))
519 }
520 }
521 .await;
522
523 match language {
524 Ok(language) => {
525 let language = Arc::new(language);
526 let mut state = this.state.write();
527
528 state.add(language.clone());
529 state.mark_language_loaded(id);
530 if let Some(mut txs) = state.loading_languages.remove(&id) {
531 for tx in txs.drain(..) {
532 let _ = tx.send(Ok(language.clone()));
533 }
534 }
535 }
536 Err(e) => {
537 log::error!("failed to load language {name}:\n{:?}", e);
538 let mut state = this.state.write();
539 state.mark_language_loaded(id);
540 if let Some(mut txs) = state.loading_languages.remove(&id) {
541 for tx in txs.drain(..) {
542 let _ = tx.send(Err(anyhow!(
543 "failed to load language {}: {}",
544 name,
545 e
546 )));
547 }
548 }
549 }
550 };
551 })
552 .detach();
553 entry.insert(vec![tx]);
554 }
555 }
556
557 rx
558 }
559
560 fn get_or_load_grammar(
561 self: &Arc<Self>,
562 name: Arc<str>,
563 ) -> impl Future<Output = Result<tree_sitter::Language>> {
564 let (tx, rx) = oneshot::channel();
565 let mut state = self.state.write();
566
567 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
568 match grammar {
569 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
570 tx.send(Ok(grammar.clone())).ok();
571 }
572 AvailableGrammar::Loading(_, txs) => {
573 txs.push(tx);
574 }
575 AvailableGrammar::Unloaded(wasm_path) => {
576 let this = self.clone();
577 self.executor
578 .spawn({
579 let wasm_path = wasm_path.clone();
580 async move {
581 let wasm_bytes = std::fs::read(&wasm_path)?;
582 let grammar_name = wasm_path
583 .file_stem()
584 .and_then(OsStr::to_str)
585 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
586 let grammar = PARSER.with(|parser| {
587 let mut parser = parser.borrow_mut();
588 let mut store = parser.take_wasm_store().unwrap();
589 let grammar = store.load_language(&grammar_name, &wasm_bytes);
590 parser.set_wasm_store(store).unwrap();
591 grammar
592 })?;
593
594 if let Some(AvailableGrammar::Loading(_, txs)) =
595 this.state.write().grammars.insert(
596 name,
597 AvailableGrammar::Loaded(wasm_path, grammar.clone()),
598 )
599 {
600 for tx in txs {
601 tx.send(Ok(grammar.clone())).ok();
602 }
603 }
604
605 anyhow::Ok(())
606 }
607 })
608 .detach();
609 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
610 }
611 }
612 } else {
613 tx.send(Err(anyhow!("no such grammar {}", name))).ok();
614 }
615
616 async move { rx.await? }
617 }
618
619 pub fn to_vec(&self) -> Vec<Arc<Language>> {
620 self.state.read().languages.iter().cloned().collect()
621 }
622
623 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
624 self.state
625 .read()
626 .lsp_adapters
627 .get(&language.config.name)
628 .cloned()
629 .unwrap_or_default()
630 }
631
632 pub fn update_lsp_status(
633 &self,
634 server_name: LanguageServerName,
635 status: LanguageServerBinaryStatus,
636 ) {
637 self.lsp_binary_status_tx.send(server_name, status);
638 }
639
640 pub fn create_pending_language_server(
641 self: &Arc<Self>,
642 stderr_capture: Arc<Mutex<Option<String>>>,
643 language: Arc<Language>,
644 adapter: Arc<CachedLspAdapter>,
645 root_path: Arc<Path>,
646 delegate: Arc<dyn LspAdapterDelegate>,
647 cx: &mut AppContext,
648 ) -> Option<PendingLanguageServer> {
649 let server_id = self.state.write().next_language_server_id();
650 log::info!(
651 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
652 adapter.name.0
653 );
654
655 let download_dir = self
656 .language_server_download_dir
657 .clone()
658 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
659 .log_err()?;
660 let language = language.clone();
661 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
662 let root_path = root_path.clone();
663 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
664 let this = Arc::downgrade(self);
665
666 let task = cx.spawn({
667 let container_dir = container_dir.clone();
668 move |mut cx| async move {
669 // If we want to install a binary globally, we need to wait for
670 // the login shell to be set on our process.
671 login_shell_env_loaded.await;
672
673 let binary = adapter
674 .clone()
675 .get_language_server_command(
676 language.clone(),
677 container_dir,
678 delegate.clone(),
679 &mut cx,
680 )
681 .await?;
682
683 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
684 task.await?;
685 }
686
687 #[cfg(any(test, feature = "test-support"))]
688 if true {
689 let capabilities = adapter
690 .as_fake()
691 .map(|fake_adapter| fake_adapter.capabilities.clone())
692 .unwrap_or_default();
693
694 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
695 binary,
696 adapter.name.0.to_string(),
697 capabilities,
698 cx.clone(),
699 );
700
701 if let Some(fake_adapter) = adapter.as_fake() {
702 if let Some(initializer) = &fake_adapter.initializer {
703 initializer(&mut fake_server);
704 }
705 }
706
707 cx.background_executor()
708 .spawn(async move {
709 if fake_server
710 .try_receive_notification::<lsp::notification::Initialized>()
711 .await
712 .is_some()
713 {
714 if let Some(this) = this.upgrade() {
715 if let Some(txs) = this
716 .state
717 .write()
718 .fake_server_txs
719 .get_mut(language.name().as_ref())
720 {
721 for tx in txs {
722 tx.unbounded_send(fake_server.clone()).ok();
723 }
724 }
725 }
726 }
727 })
728 .detach();
729
730 return Ok(server);
731 }
732
733 drop(this);
734 lsp::LanguageServer::new(
735 stderr_capture,
736 server_id,
737 binary,
738 &root_path,
739 adapter.code_action_kinds(),
740 cx,
741 )
742 }
743 });
744
745 Some(PendingLanguageServer {
746 server_id,
747 task,
748 container_dir: Some(container_dir),
749 })
750 }
751
752 pub fn language_server_binary_statuses(
753 &self,
754 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
755 self.lsp_binary_status_tx.subscribe()
756 }
757
758 pub fn delete_server_container(
759 &self,
760 adapter: Arc<CachedLspAdapter>,
761 cx: &mut AppContext,
762 ) -> Task<()> {
763 log::info!("deleting server container");
764
765 let download_dir = self
766 .language_server_download_dir
767 .clone()
768 .expect("language server download directory has not been assigned before deleting server container");
769
770 cx.spawn(|_| async move {
771 let container_dir = download_dir.join(adapter.name.0.as_ref());
772 smol::fs::remove_dir_all(container_dir)
773 .await
774 .context("server container removal")
775 .log_err();
776 })
777 }
778
779 pub fn next_language_server_id(&self) -> LanguageServerId {
780 self.state.write().next_language_server_id()
781 }
782}
783
784impl LanguageRegistryState {
785 fn next_language_server_id(&mut self) -> LanguageServerId {
786 LanguageServerId(post_inc(&mut self.next_language_server_id))
787 }
788
789 fn add(&mut self, language: Arc<Language>) {
790 if let Some(theme) = self.theme.as_ref() {
791 language.set_theme(theme.syntax());
792 }
793 self.languages.push(language);
794 self.version += 1;
795 *self.subscription.0.borrow_mut() = ();
796 }
797
798 fn reload(&mut self) {
799 self.languages.clear();
800 self.version += 1;
801 self.reload_count += 1;
802 for language in &mut self.available_languages {
803 language.loaded = false;
804 }
805 *self.subscription.0.borrow_mut() = ();
806 }
807
808 fn remove_languages(
809 &mut self,
810 languages_to_remove: &[Arc<str>],
811 grammars_to_remove: &[Arc<str>],
812 ) {
813 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
814 return;
815 }
816
817 self.languages
818 .retain(|language| !languages_to_remove.contains(&language.name()));
819 self.available_languages
820 .retain(|language| !languages_to_remove.contains(&language.name));
821 self.grammars
822 .retain(|name, _| !grammars_to_remove.contains(&name));
823 self.version += 1;
824 self.reload_count += 1;
825 *self.subscription.0.borrow_mut() = ();
826 }
827
828 /// Mark the given language as having been loaded, so that the
829 /// language registry won't try to load it again.
830 fn mark_language_loaded(&mut self, id: LanguageId) {
831 for language in &mut self.available_languages {
832 if language.id == id {
833 language.loaded = true;
834 break;
835 }
836 }
837 }
838}
839
840impl LspBinaryStatusSender {
841 fn subscribe(
842 &self,
843 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
844 let (tx, rx) = mpsc::unbounded();
845 self.txs.lock().push(tx);
846 rx
847 }
848
849 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
850 let mut txs = self.txs.lock();
851 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
852 }
853}