1use crate::{
2 language_settings::all_language_settings, task_context::ContextProvider, CachedLspAdapter,
3 File, Language, LanguageConfig, 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::{maybe, 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 None,
58 CheckingForUpdate,
59 Downloading,
60 Failed { error: String },
61}
62
63pub struct PendingLanguageServer {
64 pub server_id: LanguageServerId,
65 pub task: Task<Result<(lsp::LanguageServer, Option<serde_json::Value>)>>,
66 pub container_dir: Option<Arc<Path>>,
67}
68
69#[derive(Clone)]
70struct AvailableLanguage {
71 id: LanguageId,
72 name: Arc<str>,
73 grammar: Option<Arc<str>>,
74 matcher: LanguageMatcher,
75 load: Arc<
76 dyn Fn() -> Result<(
77 LanguageConfig,
78 LanguageQueries,
79 Option<Arc<dyn ContextProvider>>,
80 )>
81 + 'static
82 + Send
83 + Sync,
84 >,
85 loaded: bool,
86}
87
88enum AvailableGrammar {
89 Native(tree_sitter::Language),
90 Loaded(#[allow(unused)] PathBuf, tree_sitter::Language),
91 Loading(
92 #[allow(unused)] PathBuf,
93 Vec<oneshot::Sender<Result<tree_sitter::Language, Arc<anyhow::Error>>>>,
94 ),
95 Unloaded(PathBuf),
96 LoadFailed(Arc<anyhow::Error>),
97}
98
99#[derive(Debug)]
100pub struct LanguageNotFound;
101
102impl std::fmt::Display for LanguageNotFound {
103 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
104 write!(f, "language not found")
105 }
106}
107
108pub const QUERY_FILENAME_PREFIXES: &[(
109 &str,
110 fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
111)] = &[
112 ("highlights", |q| &mut q.highlights),
113 ("brackets", |q| &mut q.brackets),
114 ("outline", |q| &mut q.outline),
115 ("indents", |q| &mut q.indents),
116 ("embedding", |q| &mut q.embedding),
117 ("injections", |q| &mut q.injections),
118 ("overrides", |q| &mut q.overrides),
119 ("redactions", |q| &mut q.redactions),
120];
121
122/// Tree-sitter language queries for a given language.
123#[derive(Debug, Default)]
124pub struct LanguageQueries {
125 pub highlights: Option<Cow<'static, str>>,
126 pub brackets: Option<Cow<'static, str>>,
127 pub indents: Option<Cow<'static, str>>,
128 pub outline: Option<Cow<'static, str>>,
129 pub embedding: Option<Cow<'static, str>>,
130 pub injections: Option<Cow<'static, str>>,
131 pub overrides: Option<Cow<'static, str>>,
132 pub redactions: Option<Cow<'static, str>>,
133}
134
135#[derive(Clone, Default)]
136struct LspBinaryStatusSender {
137 txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
138}
139
140impl LanguageRegistry {
141 pub fn new(login_shell_env_loaded: Task<()>, executor: BackgroundExecutor) -> Self {
142 let this = Self {
143 state: RwLock::new(LanguageRegistryState {
144 next_language_server_id: 0,
145 languages: Vec::new(),
146 available_languages: Vec::new(),
147 grammars: Default::default(),
148 loading_languages: Default::default(),
149 lsp_adapters: Default::default(),
150 subscription: watch::channel(),
151 theme: Default::default(),
152 version: 0,
153 reload_count: 0,
154
155 #[cfg(any(test, feature = "test-support"))]
156 fake_server_txs: Default::default(),
157 }),
158 language_server_download_dir: None,
159 login_shell_env_loaded: login_shell_env_loaded.shared(),
160 lsp_binary_status_tx: Default::default(),
161 executor,
162 };
163 this.add(PLAIN_TEXT.clone());
164 this
165 }
166
167 #[cfg(any(test, feature = "test-support"))]
168 pub fn test(executor: BackgroundExecutor) -> Self {
169 let mut this = Self::new(Task::ready(()), executor);
170 this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
171 this
172 }
173
174 /// Clears out all of the loaded languages and reload them from scratch.
175 pub fn reload(&self) {
176 self.state.write().reload();
177 }
178
179 /// Removes the specified languages and grammars from the registry.
180 pub fn remove_languages(
181 &self,
182 languages_to_remove: &[Arc<str>],
183 grammars_to_remove: &[Arc<str>],
184 ) {
185 self.state
186 .write()
187 .remove_languages(languages_to_remove, grammars_to_remove)
188 }
189
190 pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
191 let mut state = self.state.write();
192 if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
193 adapters.retain(|adapter| &adapter.name != name)
194 }
195 state.version += 1;
196 state.reload_count += 1;
197 *state.subscription.0.borrow_mut() = ();
198 }
199
200 #[cfg(any(feature = "test-support", test))]
201 pub fn register_test_language(&self, config: LanguageConfig) {
202 self.register_language(
203 config.name.clone(),
204 config.grammar.clone(),
205 config.matcher.clone(),
206 move || Ok((config.clone(), Default::default(), None)),
207 )
208 }
209
210 pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
211 self.state
212 .write()
213 .lsp_adapters
214 .entry(language_name)
215 .or_default()
216 .push(CachedLspAdapter::new(adapter, true));
217 }
218
219 pub fn register_secondary_lsp_adapter(
220 &self,
221 language_name: Arc<str>,
222 adapter: Arc<dyn LspAdapter>,
223 ) {
224 self.state
225 .write()
226 .lsp_adapters
227 .entry(language_name)
228 .or_default()
229 .push(CachedLspAdapter::new(adapter, false));
230 }
231
232 #[cfg(any(feature = "test-support", test))]
233 pub fn register_fake_lsp_adapter(
234 &self,
235 language_name: &str,
236 adapter: crate::FakeLspAdapter,
237 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
238 self.state
239 .write()
240 .lsp_adapters
241 .entry(language_name.into())
242 .or_default()
243 .push(CachedLspAdapter::new(Arc::new(adapter), true));
244 self.fake_language_servers(language_name)
245 }
246
247 #[cfg(any(feature = "test-support", test))]
248 pub fn fake_language_servers(
249 &self,
250 language_name: &str,
251 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
252 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
253 self.state
254 .write()
255 .fake_server_txs
256 .entry(language_name.into())
257 .or_default()
258 .push(servers_tx);
259 servers_rx
260 }
261
262 /// Adds a language to the registry, which can be loaded if needed.
263 pub fn register_language(
264 &self,
265 name: Arc<str>,
266 grammar_name: Option<Arc<str>>,
267 matcher: LanguageMatcher,
268 load: impl Fn() -> Result<(
269 LanguageConfig,
270 LanguageQueries,
271 Option<Arc<dyn ContextProvider>>,
272 )>
273 + 'static
274 + Send
275 + Sync,
276 ) {
277 let load = Arc::new(load);
278 let state = &mut *self.state.write();
279
280 for existing_language in &mut state.available_languages {
281 if existing_language.name == name {
282 existing_language.grammar = grammar_name;
283 existing_language.matcher = matcher;
284 existing_language.load = load;
285 return;
286 }
287 }
288
289 state.available_languages.push(AvailableLanguage {
290 id: LanguageId::new(),
291 name,
292 grammar: grammar_name,
293 matcher,
294 load,
295 loaded: false,
296 });
297 state.version += 1;
298 state.reload_count += 1;
299 *state.subscription.0.borrow_mut() = ();
300 }
301
302 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
303 /// grammar controls how the source code is parsed.
304 pub fn register_native_grammars(
305 &self,
306 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
307 ) {
308 self.state.write().grammars.extend(
309 grammars
310 .into_iter()
311 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
312 );
313 }
314
315 /// Adds paths to WASM grammar files, which can be loaded if needed.
316 pub fn register_wasm_grammars(
317 &self,
318 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
319 ) {
320 let mut state = self.state.write();
321 state.grammars.extend(
322 grammars
323 .into_iter()
324 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
325 );
326 state.version += 1;
327 state.reload_count += 1;
328 *state.subscription.0.borrow_mut() = ();
329 }
330
331 pub fn language_names(&self) -> Vec<String> {
332 let state = self.state.read();
333 let mut result = state
334 .available_languages
335 .iter()
336 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
337 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
338 .collect::<Vec<_>>();
339 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
340 result
341 }
342
343 pub fn grammar_names(&self) -> Vec<Arc<str>> {
344 let state = self.state.read();
345 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
346 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
347 result
348 }
349
350 /// Add a pre-loaded language to the registry.
351 pub fn add(&self, language: Arc<Language>) {
352 let mut state = self.state.write();
353 state.available_languages.push(AvailableLanguage {
354 id: language.id,
355 name: language.name(),
356 grammar: language.config.grammar.clone(),
357 matcher: language.config.matcher.clone(),
358 load: Arc::new(|| Err(anyhow!("already loaded"))),
359 loaded: true,
360 });
361 state.add(language);
362 }
363
364 pub fn subscribe(&self) -> watch::Receiver<()> {
365 self.state.read().subscription.1.clone()
366 }
367
368 /// Returns the number of times that the registry has been changed,
369 /// by adding languages or reloading.
370 pub fn version(&self) -> usize {
371 self.state.read().version
372 }
373
374 /// Returns the number of times that the registry has been reloaded.
375 pub fn reload_count(&self) -> usize {
376 self.state.read().reload_count
377 }
378
379 pub fn set_theme(&self, theme: Arc<Theme>) {
380 let mut state = self.state.write();
381 state.theme = Some(theme.clone());
382 for language in &state.languages {
383 language.set_theme(theme.syntax());
384 }
385 }
386
387 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
388 self.language_server_download_dir = Some(path.into());
389 }
390
391 pub fn language_for_name(
392 self: &Arc<Self>,
393 name: &str,
394 ) -> impl Future<Output = Result<Arc<Language>>> {
395 let name = UniCase::new(name);
396 let rx = self.get_or_load_language(|language_name, _| {
397 if UniCase::new(language_name) == name {
398 1
399 } else {
400 0
401 }
402 });
403 async move { rx.await? }
404 }
405
406 pub fn language_for_name_or_extension(
407 self: &Arc<Self>,
408 string: &str,
409 ) -> impl Future<Output = Result<Arc<Language>>> {
410 let string = UniCase::new(string);
411 let rx = self.get_or_load_language(|name, config| {
412 if UniCase::new(name) == string
413 || config
414 .path_suffixes
415 .iter()
416 .any(|suffix| UniCase::new(suffix) == string)
417 {
418 1
419 } else {
420 0
421 }
422 });
423 async move { rx.await? }
424 }
425
426 pub fn language_for_file(
427 self: &Arc<Self>,
428 file: &Arc<dyn File>,
429 content: Option<&Rope>,
430 cx: &AppContext,
431 ) -> impl Future<Output = Result<Arc<Language>>> {
432 let user_file_types = all_language_settings(Some(file), cx);
433 self.language_for_file_internal(
434 &file.full_path(cx),
435 content,
436 Some(&user_file_types.file_types),
437 )
438 }
439
440 pub fn language_for_file_path(
441 self: &Arc<Self>,
442 path: &Path,
443 ) -> impl Future<Output = Result<Arc<Language>>> {
444 self.language_for_file_internal(path, None, None)
445 }
446
447 fn language_for_file_internal(
448 self: &Arc<Self>,
449 path: &Path,
450 content: Option<&Rope>,
451 user_file_types: Option<&HashMap<Arc<str>, Vec<String>>>,
452 ) -> impl Future<Output = Result<Arc<Language>>> {
453 let filename = path.file_name().and_then(|name| name.to_str());
454 let extension = path.extension_or_hidden_file_name();
455 let path_suffixes = [extension, filename];
456 let empty = Vec::new();
457
458 let rx = self.get_or_load_language(move |language_name, config| {
459 let path_matches_default_suffix = config
460 .path_suffixes
461 .iter()
462 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
463 let path_matches_custom_suffix = user_file_types
464 .and_then(|types| types.get(language_name))
465 .unwrap_or(&empty)
466 .iter()
467 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
468 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
469 false,
470 |(content, pattern)| {
471 let end = content.clip_point(Point::new(0, 256), Bias::Left);
472 let end = content.point_to_offset(end);
473 let text = content.chunks_in_range(0..end).collect::<String>();
474 pattern.is_match(&text)
475 },
476 );
477 if path_matches_custom_suffix {
478 2
479 } else if path_matches_default_suffix || content_matches {
480 1
481 } else {
482 0
483 }
484 });
485 async move { rx.await? }
486 }
487
488 fn get_or_load_language(
489 self: &Arc<Self>,
490 callback: impl Fn(&str, &LanguageMatcher) -> usize,
491 ) -> oneshot::Receiver<Result<Arc<Language>>> {
492 let (tx, rx) = oneshot::channel();
493
494 let mut state = self.state.write();
495 let Some((language, _)) = state
496 .available_languages
497 .iter()
498 .filter_map(|language| {
499 let score = callback(&language.name, &language.matcher);
500 if score > 0 {
501 Some((language.clone(), score))
502 } else {
503 None
504 }
505 })
506 .max_by_key(|e| e.1)
507 .clone()
508 else {
509 let _ = tx.send(Err(anyhow!(LanguageNotFound)));
510 return rx;
511 };
512
513 // If the language is already loaded, resolve with it immediately.
514 for loaded_language in state.languages.iter() {
515 if loaded_language.id == language.id {
516 let _ = tx.send(Ok(loaded_language.clone()));
517 return rx;
518 }
519 }
520
521 match state.loading_languages.entry(language.id) {
522 // If the language is already being loaded, then add this
523 // channel to a list that will be sent to when the load completes.
524 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
525
526 // Otherwise, start loading the language.
527 hash_map::Entry::Vacant(entry) => {
528 let this = self.clone();
529 self.executor
530 .spawn(async move {
531 let id = language.id;
532 let name = language.name.clone();
533 let language = async {
534 let (config, queries, provider) = (language.load)()?;
535
536 if let Some(grammar) = config.grammar.clone() {
537 let grammar = Some(this.get_or_load_grammar(grammar).await?);
538 Language::new_with_id(id, config, grammar)
539 .with_context_provider(provider)
540 .with_queries(queries)
541 } else {
542 Ok(Language::new_with_id(id, config, None)
543 .with_context_provider(provider))
544 }
545 }
546 .await;
547
548 match language {
549 Ok(language) => {
550 let language = Arc::new(language);
551 let mut state = this.state.write();
552
553 state.add(language.clone());
554 state.mark_language_loaded(id);
555 if let Some(mut txs) = state.loading_languages.remove(&id) {
556 for tx in txs.drain(..) {
557 let _ = tx.send(Ok(language.clone()));
558 }
559 }
560 }
561 Err(e) => {
562 log::error!("failed to load language {name}:\n{:?}", e);
563 let mut state = this.state.write();
564 state.mark_language_loaded(id);
565 if let Some(mut txs) = state.loading_languages.remove(&id) {
566 for tx in txs.drain(..) {
567 let _ = tx.send(Err(anyhow!(
568 "failed to load language {}: {}",
569 name,
570 e
571 )));
572 }
573 }
574 }
575 };
576 })
577 .detach();
578 entry.insert(vec![tx]);
579 }
580 }
581
582 rx
583 }
584
585 fn get_or_load_grammar(
586 self: &Arc<Self>,
587 name: Arc<str>,
588 ) -> impl Future<Output = Result<tree_sitter::Language>> {
589 let (tx, rx) = oneshot::channel();
590 let mut state = self.state.write();
591
592 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
593 match grammar {
594 AvailableGrammar::LoadFailed(error) => {
595 tx.send(Err(error.clone())).ok();
596 }
597 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
598 tx.send(Ok(grammar.clone())).ok();
599 }
600 AvailableGrammar::Loading(_, txs) => {
601 txs.push(tx);
602 }
603 AvailableGrammar::Unloaded(wasm_path) => {
604 let this = self.clone();
605 let wasm_path = wasm_path.clone();
606 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
607 self.executor
608 .spawn(async move {
609 let grammar_result = maybe!({
610 let wasm_bytes = std::fs::read(&wasm_path)?;
611 let grammar_name = wasm_path
612 .file_stem()
613 .and_then(OsStr::to_str)
614 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
615 anyhow::Ok(PARSER.with(|parser| {
616 let mut parser = parser.borrow_mut();
617 let mut store = parser.take_wasm_store().unwrap();
618 let grammar = store.load_language(&grammar_name, &wasm_bytes);
619 parser.set_wasm_store(store).unwrap();
620 grammar
621 })?)
622 })
623 .map_err(Arc::new);
624
625 let value = match &grammar_result {
626 Ok(grammar) => AvailableGrammar::Loaded(wasm_path, grammar.clone()),
627 Err(error) => AvailableGrammar::LoadFailed(error.clone()),
628 };
629
630 let old_value = this.state.write().grammars.insert(name, value);
631 if let Some(AvailableGrammar::Loading(_, txs)) = old_value {
632 for tx in txs {
633 tx.send(grammar_result.clone()).ok();
634 }
635 }
636 })
637 .detach();
638 }
639 }
640 } else {
641 tx.send(Err(Arc::new(anyhow!("no such grammar {}", name))))
642 .ok();
643 }
644
645 async move { rx.await?.map_err(|e| anyhow!(e)) }
646 }
647
648 pub fn to_vec(&self) -> Vec<Arc<Language>> {
649 self.state.read().languages.iter().cloned().collect()
650 }
651
652 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
653 self.state
654 .read()
655 .lsp_adapters
656 .get(&language.config.name)
657 .cloned()
658 .unwrap_or_default()
659 }
660
661 pub fn all_prettier_plugins(&self) -> Vec<Arc<str>> {
662 let state = self.state.read();
663 state
664 .languages
665 .iter()
666 .flat_map(|language| language.config.prettier_plugins.iter().cloned())
667 .collect()
668 }
669
670 pub fn update_lsp_status(
671 &self,
672 server_name: LanguageServerName,
673 status: LanguageServerBinaryStatus,
674 ) {
675 self.lsp_binary_status_tx.send(server_name, status);
676 }
677
678 pub fn create_pending_language_server(
679 self: &Arc<Self>,
680 stderr_capture: Arc<Mutex<Option<String>>>,
681 language: Arc<Language>,
682 adapter: Arc<CachedLspAdapter>,
683 root_path: Arc<Path>,
684 delegate: Arc<dyn LspAdapterDelegate>,
685 cx: &mut AppContext,
686 ) -> Option<PendingLanguageServer> {
687 let server_id = self.state.write().next_language_server_id();
688 log::info!(
689 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
690 adapter.name.0
691 );
692
693 let download_dir = self
694 .language_server_download_dir
695 .clone()
696 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
697 .log_err()?;
698 let language = language.clone();
699 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
700 let root_path = root_path.clone();
701 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
702 let this = Arc::downgrade(self);
703
704 let task = cx.spawn({
705 let container_dir = container_dir.clone();
706 move |mut cx| async move {
707 // If we want to install a binary globally, we need to wait for
708 // the login shell to be set on our process.
709 login_shell_env_loaded.await;
710
711 let binary_result = adapter
712 .clone()
713 .get_language_server_command(
714 language.clone(),
715 container_dir,
716 delegate.clone(),
717 &mut cx,
718 )
719 .await;
720
721 delegate.update_status(adapter.name.clone(), LanguageServerBinaryStatus::None);
722
723 let binary = binary_result?;
724 let options = adapter
725 .adapter
726 .clone()
727 .initialization_options(&delegate)
728 .await?;
729
730 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
731 task.await?;
732 }
733
734 #[cfg(any(test, feature = "test-support"))]
735 if true {
736 let capabilities = adapter
737 .as_fake()
738 .map(|fake_adapter| fake_adapter.capabilities.clone())
739 .unwrap_or_default();
740
741 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
742 binary,
743 adapter.name.0.to_string(),
744 capabilities,
745 cx.clone(),
746 );
747
748 if let Some(fake_adapter) = adapter.as_fake() {
749 if let Some(initializer) = &fake_adapter.initializer {
750 initializer(&mut fake_server);
751 }
752 }
753
754 cx.background_executor()
755 .spawn(async move {
756 if fake_server
757 .try_receive_notification::<lsp::notification::Initialized>()
758 .await
759 .is_some()
760 {
761 if let Some(this) = this.upgrade() {
762 if let Some(txs) = this
763 .state
764 .write()
765 .fake_server_txs
766 .get_mut(language.name().as_ref())
767 {
768 for tx in txs {
769 tx.unbounded_send(fake_server.clone()).ok();
770 }
771 }
772 }
773 }
774 })
775 .detach();
776
777 return Ok((server, options));
778 }
779
780 drop(this);
781 Ok((
782 lsp::LanguageServer::new(
783 stderr_capture,
784 server_id,
785 binary,
786 &root_path,
787 adapter.code_action_kinds(),
788 cx,
789 )?,
790 options,
791 ))
792 }
793 });
794
795 Some(PendingLanguageServer {
796 server_id,
797 task,
798 container_dir: Some(container_dir),
799 })
800 }
801
802 pub fn language_server_binary_statuses(
803 &self,
804 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
805 self.lsp_binary_status_tx.subscribe()
806 }
807
808 pub fn delete_server_container(
809 &self,
810 adapter: Arc<CachedLspAdapter>,
811 cx: &mut AppContext,
812 ) -> Task<()> {
813 log::info!("deleting server container");
814
815 let download_dir = self
816 .language_server_download_dir
817 .clone()
818 .expect("language server download directory has not been assigned before deleting server container");
819
820 cx.spawn(|_| async move {
821 let container_dir = download_dir.join(adapter.name.0.as_ref());
822 smol::fs::remove_dir_all(container_dir)
823 .await
824 .context("server container removal")
825 .log_err();
826 })
827 }
828
829 pub fn next_language_server_id(&self) -> LanguageServerId {
830 self.state.write().next_language_server_id()
831 }
832}
833
834impl LanguageRegistryState {
835 fn next_language_server_id(&mut self) -> LanguageServerId {
836 LanguageServerId(post_inc(&mut self.next_language_server_id))
837 }
838
839 fn add(&mut self, language: Arc<Language>) {
840 if let Some(theme) = self.theme.as_ref() {
841 language.set_theme(theme.syntax());
842 }
843 self.languages.push(language);
844 self.version += 1;
845 *self.subscription.0.borrow_mut() = ();
846 }
847
848 fn reload(&mut self) {
849 self.languages.clear();
850 self.version += 1;
851 self.reload_count += 1;
852 for language in &mut self.available_languages {
853 language.loaded = false;
854 }
855 *self.subscription.0.borrow_mut() = ();
856 }
857
858 fn remove_languages(
859 &mut self,
860 languages_to_remove: &[Arc<str>],
861 grammars_to_remove: &[Arc<str>],
862 ) {
863 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
864 return;
865 }
866
867 self.languages
868 .retain(|language| !languages_to_remove.contains(&language.name()));
869 self.available_languages
870 .retain(|language| !languages_to_remove.contains(&language.name));
871 self.grammars
872 .retain(|name, _| !grammars_to_remove.contains(&name));
873 self.version += 1;
874 self.reload_count += 1;
875 *self.subscription.0.borrow_mut() = ();
876 }
877
878 /// Mark the given language as having been loaded, so that the
879 /// language registry won't try to load it again.
880 fn mark_language_loaded(&mut self, id: LanguageId) {
881 for language in &mut self.available_languages {
882 if language.id == id {
883 language.loaded = true;
884 break;
885 }
886 }
887 }
888}
889
890impl LspBinaryStatusSender {
891 fn subscribe(
892 &self,
893 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
894 let (tx, rx) = mpsc::unbounded();
895 self.txs.lock().push(tx);
896 rx
897 }
898
899 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
900 let mut txs = self.txs.lock();
901 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
902 }
903}