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, Option<serde_json::Value>)>>,
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(unused)] PathBuf, tree_sitter::Language),
84 Loading(
85 #[allow(unused)] PathBuf,
86 Vec<oneshot::Sender<Result<tree_sitter::Language>>>,
87 ),
88 Unloaded(PathBuf),
89}
90
91#[derive(Debug)]
92pub struct LanguageNotFound;
93
94impl std::fmt::Display for LanguageNotFound {
95 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
96 write!(f, "language not found")
97 }
98}
99
100pub const QUERY_FILENAME_PREFIXES: &[(
101 &str,
102 fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
103)] = &[
104 ("highlights", |q| &mut q.highlights),
105 ("brackets", |q| &mut q.brackets),
106 ("outline", |q| &mut q.outline),
107 ("indents", |q| &mut q.indents),
108 ("embedding", |q| &mut q.embedding),
109 ("injections", |q| &mut q.injections),
110 ("overrides", |q| &mut q.overrides),
111 ("redactions", |q| &mut q.redactions),
112];
113
114/// Tree-sitter language queries for a given language.
115#[derive(Debug, Default)]
116pub struct LanguageQueries {
117 pub highlights: Option<Cow<'static, str>>,
118 pub brackets: Option<Cow<'static, str>>,
119 pub indents: Option<Cow<'static, str>>,
120 pub outline: Option<Cow<'static, str>>,
121 pub embedding: Option<Cow<'static, str>>,
122 pub injections: Option<Cow<'static, str>>,
123 pub overrides: Option<Cow<'static, str>>,
124 pub redactions: Option<Cow<'static, str>>,
125}
126
127#[derive(Clone, Default)]
128struct LspBinaryStatusSender {
129 txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
130}
131
132impl LanguageRegistry {
133 pub fn new(login_shell_env_loaded: Task<()>, executor: BackgroundExecutor) -> Self {
134 let this = Self {
135 state: RwLock::new(LanguageRegistryState {
136 next_language_server_id: 0,
137 languages: Vec::new(),
138 available_languages: Vec::new(),
139 grammars: Default::default(),
140 loading_languages: Default::default(),
141 lsp_adapters: Default::default(),
142 subscription: watch::channel(),
143 theme: Default::default(),
144 version: 0,
145 reload_count: 0,
146
147 #[cfg(any(test, feature = "test-support"))]
148 fake_server_txs: Default::default(),
149 }),
150 language_server_download_dir: None,
151 login_shell_env_loaded: login_shell_env_loaded.shared(),
152 lsp_binary_status_tx: Default::default(),
153 executor,
154 };
155 this.add(PLAIN_TEXT.clone());
156 this
157 }
158
159 #[cfg(any(test, feature = "test-support"))]
160 pub fn test(executor: BackgroundExecutor) -> Self {
161 let mut this = Self::new(Task::ready(()), executor);
162 this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
163 this
164 }
165
166 /// Clears out all of the loaded languages and reload them from scratch.
167 pub fn reload(&self) {
168 self.state.write().reload();
169 }
170
171 /// Removes the specified languages and grammars from the registry.
172 pub fn remove_languages(
173 &self,
174 languages_to_remove: &[Arc<str>],
175 grammars_to_remove: &[Arc<str>],
176 ) {
177 self.state
178 .write()
179 .remove_languages(languages_to_remove, grammars_to_remove)
180 }
181
182 pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
183 let mut state = self.state.write();
184 if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
185 adapters.retain(|adapter| &adapter.name != name)
186 }
187 state.version += 1;
188 state.reload_count += 1;
189 *state.subscription.0.borrow_mut() = ();
190 }
191
192 #[cfg(any(feature = "test-support", test))]
193 pub fn register_test_language(&self, config: LanguageConfig) {
194 self.register_language(
195 config.name.clone(),
196 config.grammar.clone(),
197 config.matcher.clone(),
198 None,
199 move || Ok((config.clone(), Default::default())),
200 )
201 }
202
203 pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
204 self.state
205 .write()
206 .lsp_adapters
207 .entry(language_name)
208 .or_default()
209 .push(CachedLspAdapter::new(adapter));
210 }
211
212 #[cfg(any(feature = "test-support", test))]
213 pub fn register_fake_lsp_adapter(
214 &self,
215 language_name: &str,
216 adapter: crate::FakeLspAdapter,
217 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
218 self.state
219 .write()
220 .lsp_adapters
221 .entry(language_name.into())
222 .or_default()
223 .push(CachedLspAdapter::new(Arc::new(adapter)));
224 self.fake_language_servers(language_name)
225 }
226
227 #[cfg(any(feature = "test-support", test))]
228 pub fn fake_language_servers(
229 &self,
230 language_name: &str,
231 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
232 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
233 self.state
234 .write()
235 .fake_server_txs
236 .entry(language_name.into())
237 .or_default()
238 .push(servers_tx);
239 servers_rx
240 }
241
242 /// Adds a language to the registry, which can be loaded if needed.
243 pub fn register_language(
244 &self,
245 name: Arc<str>,
246 grammar_name: Option<Arc<str>>,
247 matcher: LanguageMatcher,
248 context_provider: Option<Arc<dyn LanguageContextProvider>>,
249 load: impl Fn() -> Result<(LanguageConfig, LanguageQueries)> + 'static + Send + Sync,
250 ) {
251 let load = Arc::new(load);
252 let state = &mut *self.state.write();
253
254 for existing_language in &mut state.available_languages {
255 if existing_language.name == name {
256 existing_language.grammar = grammar_name;
257 existing_language.matcher = matcher;
258 existing_language.load = load;
259 return;
260 }
261 }
262
263 state.available_languages.push(AvailableLanguage {
264 id: LanguageId::new(),
265 name,
266 grammar: grammar_name,
267 matcher,
268 load,
269
270 context_provider,
271 loaded: false,
272 });
273 state.version += 1;
274 state.reload_count += 1;
275 *state.subscription.0.borrow_mut() = ();
276 }
277
278 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
279 /// grammar controls how the source code is parsed.
280 pub fn register_native_grammars(
281 &self,
282 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
283 ) {
284 self.state.write().grammars.extend(
285 grammars
286 .into_iter()
287 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
288 );
289 }
290
291 /// Adds paths to WASM grammar files, which can be loaded if needed.
292 pub fn register_wasm_grammars(
293 &self,
294 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
295 ) {
296 let mut state = self.state.write();
297 state.grammars.extend(
298 grammars
299 .into_iter()
300 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
301 );
302 state.version += 1;
303 state.reload_count += 1;
304 *state.subscription.0.borrow_mut() = ();
305 }
306
307 pub fn language_names(&self) -> Vec<String> {
308 let state = self.state.read();
309 let mut result = state
310 .available_languages
311 .iter()
312 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
313 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
314 .collect::<Vec<_>>();
315 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
316 result
317 }
318
319 pub fn grammar_names(&self) -> Vec<Arc<str>> {
320 let state = self.state.read();
321 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
322 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
323 result
324 }
325
326 /// Add a pre-loaded language to the registry.
327 pub fn add(&self, language: Arc<Language>) {
328 let mut state = self.state.write();
329 state.available_languages.push(AvailableLanguage {
330 id: language.id,
331 name: language.name(),
332 grammar: language.config.grammar.clone(),
333 matcher: language.config.matcher.clone(),
334 load: Arc::new(|| Err(anyhow!("already loaded"))),
335 loaded: true,
336 context_provider: language.context_provider.clone(),
337 });
338 state.add(language);
339 }
340
341 pub fn subscribe(&self) -> watch::Receiver<()> {
342 self.state.read().subscription.1.clone()
343 }
344
345 /// Returns the number of times that the registry has been changed,
346 /// by adding languages or reloading.
347 pub fn version(&self) -> usize {
348 self.state.read().version
349 }
350
351 /// Returns the number of times that the registry has been reloaded.
352 pub fn reload_count(&self) -> usize {
353 self.state.read().reload_count
354 }
355
356 pub fn set_theme(&self, theme: Arc<Theme>) {
357 let mut state = self.state.write();
358 state.theme = Some(theme.clone());
359 for language in &state.languages {
360 language.set_theme(theme.syntax());
361 }
362 }
363
364 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
365 self.language_server_download_dir = Some(path.into());
366 }
367
368 pub fn language_for_name(
369 self: &Arc<Self>,
370 name: &str,
371 ) -> impl Future<Output = Result<Arc<Language>>> {
372 let name = UniCase::new(name);
373 let rx = self.get_or_load_language(|language_name, _| {
374 if UniCase::new(language_name) == name {
375 1
376 } else {
377 0
378 }
379 });
380 async move { rx.await? }
381 }
382
383 pub fn language_for_name_or_extension(
384 self: &Arc<Self>,
385 string: &str,
386 ) -> impl Future<Output = Result<Arc<Language>>> {
387 let string = UniCase::new(string);
388 let rx = self.get_or_load_language(|name, config| {
389 if UniCase::new(name) == string
390 || config
391 .path_suffixes
392 .iter()
393 .any(|suffix| UniCase::new(suffix) == string)
394 {
395 1
396 } else {
397 0
398 }
399 });
400 async move { rx.await? }
401 }
402
403 pub fn language_for_file(
404 self: &Arc<Self>,
405 file: &Arc<dyn File>,
406 content: Option<&Rope>,
407 cx: &AppContext,
408 ) -> impl Future<Output = Result<Arc<Language>>> {
409 let user_file_types = all_language_settings(Some(file), cx);
410 self.language_for_file_internal(
411 &file.full_path(cx),
412 content,
413 Some(&user_file_types.file_types),
414 )
415 }
416
417 pub fn language_for_file_path(
418 self: &Arc<Self>,
419 path: &Path,
420 ) -> impl Future<Output = Result<Arc<Language>>> {
421 self.language_for_file_internal(path, None, None)
422 }
423
424 fn language_for_file_internal(
425 self: &Arc<Self>,
426 path: &Path,
427 content: Option<&Rope>,
428 user_file_types: Option<&HashMap<Arc<str>, Vec<String>>>,
429 ) -> impl Future<Output = Result<Arc<Language>>> {
430 let filename = path.file_name().and_then(|name| name.to_str());
431 let extension = path.extension_or_hidden_file_name();
432 let path_suffixes = [extension, filename];
433 let empty = Vec::new();
434
435 let rx = self.get_or_load_language(move |language_name, config| {
436 let path_matches_default_suffix = config
437 .path_suffixes
438 .iter()
439 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
440 let path_matches_custom_suffix = user_file_types
441 .and_then(|types| types.get(language_name))
442 .unwrap_or(&empty)
443 .iter()
444 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
445 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
446 false,
447 |(content, pattern)| {
448 let end = content.clip_point(Point::new(0, 256), Bias::Left);
449 let end = content.point_to_offset(end);
450 let text = content.chunks_in_range(0..end).collect::<String>();
451 pattern.is_match(&text)
452 },
453 );
454 if path_matches_custom_suffix {
455 2
456 } else if path_matches_default_suffix || content_matches {
457 1
458 } else {
459 0
460 }
461 });
462 async move { rx.await? }
463 }
464
465 fn get_or_load_language(
466 self: &Arc<Self>,
467 callback: impl Fn(&str, &LanguageMatcher) -> usize,
468 ) -> oneshot::Receiver<Result<Arc<Language>>> {
469 let (tx, rx) = oneshot::channel();
470
471 let mut state = self.state.write();
472 let Some((language, _)) = state
473 .available_languages
474 .iter()
475 .filter_map(|language| {
476 let score = callback(&language.name, &language.matcher);
477 if score > 0 {
478 Some((language.clone(), score))
479 } else {
480 None
481 }
482 })
483 .max_by_key(|e| e.1)
484 .clone()
485 else {
486 let _ = tx.send(Err(anyhow!(LanguageNotFound)));
487 return rx;
488 };
489
490 // If the language is already loaded, resolve with it immediately.
491 for loaded_language in state.languages.iter() {
492 if loaded_language.id == language.id {
493 let _ = tx.send(Ok(loaded_language.clone()));
494 return rx;
495 }
496 }
497
498 match state.loading_languages.entry(language.id) {
499 // If the language is already being loaded, then add this
500 // channel to a list that will be sent to when the load completes.
501 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
502
503 // Otherwise, start loading the language.
504 hash_map::Entry::Vacant(entry) => {
505 let this = self.clone();
506 self.executor
507 .spawn(async move {
508 let id = language.id;
509 let name = language.name.clone();
510 let provider = language.context_provider.clone();
511 let language = async {
512 let (config, queries) = (language.load)()?;
513
514 if let Some(grammar) = config.grammar.clone() {
515 let grammar = Some(this.get_or_load_grammar(grammar).await?);
516 Language::new_with_id(id, config, grammar)
517 .with_context_provider(provider)
518 .with_queries(queries)
519 } else {
520 Ok(Language::new_with_id(id, config, None)
521 .with_context_provider(provider))
522 }
523 }
524 .await;
525
526 match language {
527 Ok(language) => {
528 let language = Arc::new(language);
529 let mut state = this.state.write();
530
531 state.add(language.clone());
532 state.mark_language_loaded(id);
533 if let Some(mut txs) = state.loading_languages.remove(&id) {
534 for tx in txs.drain(..) {
535 let _ = tx.send(Ok(language.clone()));
536 }
537 }
538 }
539 Err(e) => {
540 log::error!("failed to load language {name}:\n{:?}", e);
541 let mut state = this.state.write();
542 state.mark_language_loaded(id);
543 if let Some(mut txs) = state.loading_languages.remove(&id) {
544 for tx in txs.drain(..) {
545 let _ = tx.send(Err(anyhow!(
546 "failed to load language {}: {}",
547 name,
548 e
549 )));
550 }
551 }
552 }
553 };
554 })
555 .detach();
556 entry.insert(vec![tx]);
557 }
558 }
559
560 rx
561 }
562
563 fn get_or_load_grammar(
564 self: &Arc<Self>,
565 name: Arc<str>,
566 ) -> impl Future<Output = Result<tree_sitter::Language>> {
567 let (tx, rx) = oneshot::channel();
568 let mut state = self.state.write();
569
570 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
571 match grammar {
572 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
573 tx.send(Ok(grammar.clone())).ok();
574 }
575 AvailableGrammar::Loading(_, txs) => {
576 txs.push(tx);
577 }
578 AvailableGrammar::Unloaded(wasm_path) => {
579 let this = self.clone();
580 self.executor
581 .spawn({
582 let wasm_path = wasm_path.clone();
583 async move {
584 let wasm_bytes = std::fs::read(&wasm_path)?;
585 let grammar_name = wasm_path
586 .file_stem()
587 .and_then(OsStr::to_str)
588 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
589 let grammar = PARSER.with(|parser| {
590 let mut parser = parser.borrow_mut();
591 let mut store = parser.take_wasm_store().unwrap();
592 let grammar = store.load_language(&grammar_name, &wasm_bytes);
593 parser.set_wasm_store(store).unwrap();
594 grammar
595 })?;
596
597 if let Some(AvailableGrammar::Loading(_, txs)) =
598 this.state.write().grammars.insert(
599 name,
600 AvailableGrammar::Loaded(wasm_path, grammar.clone()),
601 )
602 {
603 for tx in txs {
604 tx.send(Ok(grammar.clone())).ok();
605 }
606 }
607
608 anyhow::Ok(())
609 }
610 })
611 .detach();
612 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
613 }
614 }
615 } else {
616 tx.send(Err(anyhow!("no such grammar {}", name))).ok();
617 }
618
619 async move { rx.await? }
620 }
621
622 pub fn to_vec(&self) -> Vec<Arc<Language>> {
623 self.state.read().languages.iter().cloned().collect()
624 }
625
626 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
627 self.state
628 .read()
629 .lsp_adapters
630 .get(&language.config.name)
631 .cloned()
632 .unwrap_or_default()
633 }
634
635 pub fn all_prettier_plugins(&self) -> Vec<Arc<str>> {
636 let state = self.state.read();
637 state
638 .languages
639 .iter()
640 .flat_map(|language| language.config.prettier_plugins.iter().cloned())
641 .collect()
642 }
643
644 pub fn update_lsp_status(
645 &self,
646 server_name: LanguageServerName,
647 status: LanguageServerBinaryStatus,
648 ) {
649 self.lsp_binary_status_tx.send(server_name, status);
650 }
651
652 pub fn create_pending_language_server(
653 self: &Arc<Self>,
654 stderr_capture: Arc<Mutex<Option<String>>>,
655 language: Arc<Language>,
656 adapter: Arc<CachedLspAdapter>,
657 root_path: Arc<Path>,
658 delegate: Arc<dyn LspAdapterDelegate>,
659 cx: &mut AppContext,
660 ) -> Option<PendingLanguageServer> {
661 let server_id = self.state.write().next_language_server_id();
662 log::info!(
663 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
664 adapter.name.0
665 );
666
667 let download_dir = self
668 .language_server_download_dir
669 .clone()
670 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
671 .log_err()?;
672 let language = language.clone();
673 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
674 let root_path = root_path.clone();
675 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
676 let this = Arc::downgrade(self);
677
678 let task = cx.spawn({
679 let container_dir = container_dir.clone();
680 move |mut cx| async move {
681 // If we want to install a binary globally, we need to wait for
682 // the login shell to be set on our process.
683 login_shell_env_loaded.await;
684
685 let binary = adapter
686 .clone()
687 .get_language_server_command(
688 language.clone(),
689 container_dir,
690 delegate.clone(),
691 &mut cx,
692 )
693 .await?;
694
695 let options = adapter
696 .adapter
697 .clone()
698 .initialization_options(&delegate)
699 .await?;
700
701 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
702 task.await?;
703 }
704
705 #[cfg(any(test, feature = "test-support"))]
706 if true {
707 let capabilities = adapter
708 .as_fake()
709 .map(|fake_adapter| fake_adapter.capabilities.clone())
710 .unwrap_or_default();
711
712 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
713 binary,
714 adapter.name.0.to_string(),
715 capabilities,
716 cx.clone(),
717 );
718
719 if let Some(fake_adapter) = adapter.as_fake() {
720 if let Some(initializer) = &fake_adapter.initializer {
721 initializer(&mut fake_server);
722 }
723 }
724
725 cx.background_executor()
726 .spawn(async move {
727 if fake_server
728 .try_receive_notification::<lsp::notification::Initialized>()
729 .await
730 .is_some()
731 {
732 if let Some(this) = this.upgrade() {
733 if let Some(txs) = this
734 .state
735 .write()
736 .fake_server_txs
737 .get_mut(language.name().as_ref())
738 {
739 for tx in txs {
740 tx.unbounded_send(fake_server.clone()).ok();
741 }
742 }
743 }
744 }
745 })
746 .detach();
747
748 return Ok((server, options));
749 }
750
751 drop(this);
752 Ok((
753 lsp::LanguageServer::new(
754 stderr_capture,
755 server_id,
756 binary,
757 &root_path,
758 adapter.code_action_kinds(),
759 cx,
760 )?,
761 options,
762 ))
763 }
764 });
765
766 Some(PendingLanguageServer {
767 server_id,
768 task,
769 container_dir: Some(container_dir),
770 })
771 }
772
773 pub fn language_server_binary_statuses(
774 &self,
775 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
776 self.lsp_binary_status_tx.subscribe()
777 }
778
779 pub fn delete_server_container(
780 &self,
781 adapter: Arc<CachedLspAdapter>,
782 cx: &mut AppContext,
783 ) -> Task<()> {
784 log::info!("deleting server container");
785
786 let download_dir = self
787 .language_server_download_dir
788 .clone()
789 .expect("language server download directory has not been assigned before deleting server container");
790
791 cx.spawn(|_| async move {
792 let container_dir = download_dir.join(adapter.name.0.as_ref());
793 smol::fs::remove_dir_all(container_dir)
794 .await
795 .context("server container removal")
796 .log_err();
797 })
798 }
799
800 pub fn next_language_server_id(&self) -> LanguageServerId {
801 self.state.write().next_language_server_id()
802 }
803}
804
805impl LanguageRegistryState {
806 fn next_language_server_id(&mut self) -> LanguageServerId {
807 LanguageServerId(post_inc(&mut self.next_language_server_id))
808 }
809
810 fn add(&mut self, language: Arc<Language>) {
811 if let Some(theme) = self.theme.as_ref() {
812 language.set_theme(theme.syntax());
813 }
814 self.languages.push(language);
815 self.version += 1;
816 *self.subscription.0.borrow_mut() = ();
817 }
818
819 fn reload(&mut self) {
820 self.languages.clear();
821 self.version += 1;
822 self.reload_count += 1;
823 for language in &mut self.available_languages {
824 language.loaded = false;
825 }
826 *self.subscription.0.borrow_mut() = ();
827 }
828
829 fn remove_languages(
830 &mut self,
831 languages_to_remove: &[Arc<str>],
832 grammars_to_remove: &[Arc<str>],
833 ) {
834 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
835 return;
836 }
837
838 self.languages
839 .retain(|language| !languages_to_remove.contains(&language.name()));
840 self.available_languages
841 .retain(|language| !languages_to_remove.contains(&language.name));
842 self.grammars
843 .retain(|name, _| !grammars_to_remove.contains(&name));
844 self.version += 1;
845 self.reload_count += 1;
846 *self.subscription.0.borrow_mut() = ();
847 }
848
849 /// Mark the given language as having been loaded, so that the
850 /// language registry won't try to load it again.
851 fn mark_language_loaded(&mut self, id: LanguageId) {
852 for language in &mut self.available_languages {
853 if language.id == id {
854 language.loaded = true;
855 break;
856 }
857 }
858 }
859}
860
861impl LspBinaryStatusSender {
862 fn subscribe(
863 &self,
864 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
865 let (tx, rx) = mpsc::unbounded();
866 self.txs.lock().push(tx);
867 rx
868 }
869
870 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
871 let mut txs = self.txs.lock();
872 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
873 }
874}