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