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