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.register_specific_fake_lsp_adapter(language_name, true, adapter)
239 }
240
241 #[cfg(any(feature = "test-support", test))]
242 pub fn register_specific_fake_lsp_adapter(
243 &self,
244 language_name: &str,
245 primary: bool,
246 adapter: crate::FakeLspAdapter,
247 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
248 self.state
249 .write()
250 .lsp_adapters
251 .entry(language_name.into())
252 .or_default()
253 .push(CachedLspAdapter::new(Arc::new(adapter), primary));
254 self.fake_language_servers(language_name)
255 }
256
257 #[cfg(any(feature = "test-support", test))]
258 pub fn fake_language_servers(
259 &self,
260 language_name: &str,
261 ) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
262 let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
263 self.state
264 .write()
265 .fake_server_txs
266 .entry(language_name.into())
267 .or_default()
268 .push(servers_tx);
269 servers_rx
270 }
271
272 /// Adds a language to the registry, which can be loaded if needed.
273 pub fn register_language(
274 &self,
275 name: Arc<str>,
276 grammar_name: Option<Arc<str>>,
277 matcher: LanguageMatcher,
278 load: impl Fn() -> Result<(
279 LanguageConfig,
280 LanguageQueries,
281 Option<Arc<dyn ContextProvider>>,
282 )>
283 + 'static
284 + Send
285 + Sync,
286 ) {
287 let load = Arc::new(load);
288 let state = &mut *self.state.write();
289
290 for existing_language in &mut state.available_languages {
291 if existing_language.name == name {
292 existing_language.grammar = grammar_name;
293 existing_language.matcher = matcher;
294 existing_language.load = load;
295 return;
296 }
297 }
298
299 state.available_languages.push(AvailableLanguage {
300 id: LanguageId::new(),
301 name,
302 grammar: grammar_name,
303 matcher,
304 load,
305 loaded: false,
306 });
307 state.version += 1;
308 state.reload_count += 1;
309 *state.subscription.0.borrow_mut() = ();
310 }
311
312 /// Adds grammars to the registry. Language configurations reference a grammar by name. The
313 /// grammar controls how the source code is parsed.
314 pub fn register_native_grammars(
315 &self,
316 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
317 ) {
318 self.state.write().grammars.extend(
319 grammars
320 .into_iter()
321 .map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
322 );
323 }
324
325 /// Adds paths to WASM grammar files, which can be loaded if needed.
326 pub fn register_wasm_grammars(
327 &self,
328 grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
329 ) {
330 let mut state = self.state.write();
331 state.grammars.extend(
332 grammars
333 .into_iter()
334 .map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
335 );
336 state.version += 1;
337 state.reload_count += 1;
338 *state.subscription.0.borrow_mut() = ();
339 }
340
341 pub fn language_names(&self) -> Vec<String> {
342 let state = self.state.read();
343 let mut result = state
344 .available_languages
345 .iter()
346 .filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
347 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
348 .collect::<Vec<_>>();
349 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
350 result
351 }
352
353 pub fn grammar_names(&self) -> Vec<Arc<str>> {
354 let state = self.state.read();
355 let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
356 result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
357 result
358 }
359
360 /// Add a pre-loaded language to the registry.
361 pub fn add(&self, language: Arc<Language>) {
362 let mut state = self.state.write();
363 state.available_languages.push(AvailableLanguage {
364 id: language.id,
365 name: language.name(),
366 grammar: language.config.grammar.clone(),
367 matcher: language.config.matcher.clone(),
368 load: Arc::new(|| Err(anyhow!("already loaded"))),
369 loaded: true,
370 });
371 state.add(language);
372 }
373
374 pub fn subscribe(&self) -> watch::Receiver<()> {
375 self.state.read().subscription.1.clone()
376 }
377
378 /// Returns the number of times that the registry has been changed,
379 /// by adding languages or reloading.
380 pub fn version(&self) -> usize {
381 self.state.read().version
382 }
383
384 /// Returns the number of times that the registry has been reloaded.
385 pub fn reload_count(&self) -> usize {
386 self.state.read().reload_count
387 }
388
389 pub fn set_theme(&self, theme: Arc<Theme>) {
390 let mut state = self.state.write();
391 state.theme = Some(theme.clone());
392 for language in &state.languages {
393 language.set_theme(theme.syntax());
394 }
395 }
396
397 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
398 self.language_server_download_dir = Some(path.into());
399 }
400
401 pub fn language_for_name(
402 self: &Arc<Self>,
403 name: &str,
404 ) -> impl Future<Output = Result<Arc<Language>>> {
405 let name = UniCase::new(name);
406 let rx = self.get_or_load_language(|language_name, _| {
407 if UniCase::new(language_name) == name {
408 1
409 } else {
410 0
411 }
412 });
413 async move { rx.await? }
414 }
415
416 pub fn language_for_name_or_extension(
417 self: &Arc<Self>,
418 string: &str,
419 ) -> impl Future<Output = Result<Arc<Language>>> {
420 let string = UniCase::new(string);
421 let rx = self.get_or_load_language(|name, config| {
422 if UniCase::new(name) == string
423 || config
424 .path_suffixes
425 .iter()
426 .any(|suffix| UniCase::new(suffix) == string)
427 {
428 1
429 } else {
430 0
431 }
432 });
433 async move { rx.await? }
434 }
435
436 pub fn language_for_file(
437 self: &Arc<Self>,
438 file: &Arc<dyn File>,
439 content: Option<&Rope>,
440 cx: &AppContext,
441 ) -> impl Future<Output = Result<Arc<Language>>> {
442 let user_file_types = all_language_settings(Some(file), cx);
443 self.language_for_file_internal(
444 &file.full_path(cx),
445 content,
446 Some(&user_file_types.file_types),
447 )
448 }
449
450 pub fn language_for_file_path(
451 self: &Arc<Self>,
452 path: &Path,
453 ) -> impl Future<Output = Result<Arc<Language>>> {
454 self.language_for_file_internal(path, None, None)
455 }
456
457 fn language_for_file_internal(
458 self: &Arc<Self>,
459 path: &Path,
460 content: Option<&Rope>,
461 user_file_types: Option<&HashMap<Arc<str>, Vec<String>>>,
462 ) -> impl Future<Output = Result<Arc<Language>>> {
463 let filename = path.file_name().and_then(|name| name.to_str());
464 let extension = path.extension_or_hidden_file_name();
465 let path_suffixes = [extension, filename];
466 let empty = Vec::new();
467
468 let rx = self.get_or_load_language(move |language_name, config| {
469 let path_matches_default_suffix = config
470 .path_suffixes
471 .iter()
472 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
473 let path_matches_custom_suffix = user_file_types
474 .and_then(|types| types.get(language_name))
475 .unwrap_or(&empty)
476 .iter()
477 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
478 let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
479 false,
480 |(content, pattern)| {
481 let end = content.clip_point(Point::new(0, 256), Bias::Left);
482 let end = content.point_to_offset(end);
483 let text = content.chunks_in_range(0..end).collect::<String>();
484 pattern.is_match(&text)
485 },
486 );
487 if path_matches_custom_suffix {
488 2
489 } else if path_matches_default_suffix || content_matches {
490 1
491 } else {
492 0
493 }
494 });
495 async move { rx.await? }
496 }
497
498 fn get_or_load_language(
499 self: &Arc<Self>,
500 callback: impl Fn(&str, &LanguageMatcher) -> usize,
501 ) -> oneshot::Receiver<Result<Arc<Language>>> {
502 let (tx, rx) = oneshot::channel();
503
504 let mut state = self.state.write();
505 let Some((language, _)) = state
506 .available_languages
507 .iter()
508 .filter_map(|language| {
509 let score = callback(&language.name, &language.matcher);
510 if score > 0 {
511 Some((language.clone(), score))
512 } else {
513 None
514 }
515 })
516 .max_by_key(|e| e.1)
517 .clone()
518 else {
519 let _ = tx.send(Err(anyhow!(LanguageNotFound)));
520 return rx;
521 };
522
523 // If the language is already loaded, resolve with it immediately.
524 for loaded_language in state.languages.iter() {
525 if loaded_language.id == language.id {
526 let _ = tx.send(Ok(loaded_language.clone()));
527 return rx;
528 }
529 }
530
531 match state.loading_languages.entry(language.id) {
532 // If the language is already being loaded, then add this
533 // channel to a list that will be sent to when the load completes.
534 hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
535
536 // Otherwise, start loading the language.
537 hash_map::Entry::Vacant(entry) => {
538 let this = self.clone();
539 self.executor
540 .spawn(async move {
541 let id = language.id;
542 let name = language.name.clone();
543 let language = async {
544 let (config, queries, provider) = (language.load)()?;
545
546 if let Some(grammar) = config.grammar.clone() {
547 let grammar = Some(this.get_or_load_grammar(grammar).await?);
548 Language::new_with_id(id, config, grammar)
549 .with_context_provider(provider)
550 .with_queries(queries)
551 } else {
552 Ok(Language::new_with_id(id, config, None)
553 .with_context_provider(provider))
554 }
555 }
556 .await;
557
558 match language {
559 Ok(language) => {
560 let language = Arc::new(language);
561 let mut state = this.state.write();
562
563 state.add(language.clone());
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(Ok(language.clone()));
568 }
569 }
570 }
571 Err(e) => {
572 log::error!("failed to load language {name}:\n{:?}", e);
573 let mut state = this.state.write();
574 state.mark_language_loaded(id);
575 if let Some(mut txs) = state.loading_languages.remove(&id) {
576 for tx in txs.drain(..) {
577 let _ = tx.send(Err(anyhow!(
578 "failed to load language {}: {}",
579 name,
580 e
581 )));
582 }
583 }
584 }
585 };
586 })
587 .detach();
588 entry.insert(vec![tx]);
589 }
590 }
591
592 rx
593 }
594
595 fn get_or_load_grammar(
596 self: &Arc<Self>,
597 name: Arc<str>,
598 ) -> impl Future<Output = Result<tree_sitter::Language>> {
599 let (tx, rx) = oneshot::channel();
600 let mut state = self.state.write();
601
602 if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
603 match grammar {
604 AvailableGrammar::LoadFailed(error) => {
605 tx.send(Err(error.clone())).ok();
606 }
607 AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
608 tx.send(Ok(grammar.clone())).ok();
609 }
610 AvailableGrammar::Loading(_, txs) => {
611 txs.push(tx);
612 }
613 AvailableGrammar::Unloaded(wasm_path) => {
614 let this = self.clone();
615 let wasm_path = wasm_path.clone();
616 *grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
617 self.executor
618 .spawn(async move {
619 let grammar_result = maybe!({
620 let wasm_bytes = std::fs::read(&wasm_path)?;
621 let grammar_name = wasm_path
622 .file_stem()
623 .and_then(OsStr::to_str)
624 .ok_or_else(|| anyhow!("invalid grammar filename"))?;
625 anyhow::Ok(PARSER.with(|parser| {
626 let mut parser = parser.borrow_mut();
627 let mut store = parser.take_wasm_store().unwrap();
628 let grammar = store.load_language(&grammar_name, &wasm_bytes);
629 parser.set_wasm_store(store).unwrap();
630 grammar
631 })?)
632 })
633 .map_err(Arc::new);
634
635 let value = match &grammar_result {
636 Ok(grammar) => AvailableGrammar::Loaded(wasm_path, grammar.clone()),
637 Err(error) => AvailableGrammar::LoadFailed(error.clone()),
638 };
639
640 let old_value = this.state.write().grammars.insert(name, value);
641 if let Some(AvailableGrammar::Loading(_, txs)) = old_value {
642 for tx in txs {
643 tx.send(grammar_result.clone()).ok();
644 }
645 }
646 })
647 .detach();
648 }
649 }
650 } else {
651 tx.send(Err(Arc::new(anyhow!("no such grammar {}", name))))
652 .ok();
653 }
654
655 async move { rx.await?.map_err(|e| anyhow!(e)) }
656 }
657
658 pub fn to_vec(&self) -> Vec<Arc<Language>> {
659 self.state.read().languages.iter().cloned().collect()
660 }
661
662 pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
663 self.state
664 .read()
665 .lsp_adapters
666 .get(&language.config.name)
667 .cloned()
668 .unwrap_or_default()
669 }
670
671 pub fn all_prettier_plugins(&self) -> Vec<Arc<str>> {
672 let state = self.state.read();
673 state
674 .languages
675 .iter()
676 .flat_map(|language| language.config.prettier_plugins.iter().cloned())
677 .collect()
678 }
679
680 pub fn update_lsp_status(
681 &self,
682 server_name: LanguageServerName,
683 status: LanguageServerBinaryStatus,
684 ) {
685 self.lsp_binary_status_tx.send(server_name, status);
686 }
687
688 pub fn create_pending_language_server(
689 self: &Arc<Self>,
690 stderr_capture: Arc<Mutex<Option<String>>>,
691 language: Arc<Language>,
692 adapter: Arc<CachedLspAdapter>,
693 root_path: Arc<Path>,
694 delegate: Arc<dyn LspAdapterDelegate>,
695 cx: &mut AppContext,
696 ) -> Option<PendingLanguageServer> {
697 let server_id = self.state.write().next_language_server_id();
698 log::info!(
699 "starting language server {:?}, path: {root_path:?}, id: {server_id}",
700 adapter.name.0
701 );
702
703 let download_dir = self
704 .language_server_download_dir
705 .clone()
706 .ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
707 .log_err()?;
708 let language = language.clone();
709 let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
710 let root_path = root_path.clone();
711 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
712 let this = Arc::downgrade(self);
713
714 let task = cx.spawn({
715 let container_dir = container_dir.clone();
716 move |mut cx| async move {
717 // If we want to install a binary globally, we need to wait for
718 // the login shell to be set on our process.
719 login_shell_env_loaded.await;
720
721 let binary_result = adapter
722 .clone()
723 .get_language_server_command(
724 language.clone(),
725 container_dir,
726 delegate.clone(),
727 &mut cx,
728 )
729 .await;
730
731 delegate.update_status(adapter.name.clone(), LanguageServerBinaryStatus::None);
732
733 let binary = binary_result?;
734 let options = adapter
735 .adapter
736 .clone()
737 .initialization_options(&delegate)
738 .await?;
739
740 if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
741 task.await?;
742 }
743
744 #[cfg(any(test, feature = "test-support"))]
745 if true {
746 let capabilities = adapter
747 .as_fake()
748 .map(|fake_adapter| fake_adapter.capabilities.clone())
749 .unwrap_or_default();
750
751 let (server, mut fake_server) = lsp::FakeLanguageServer::new(
752 server_id,
753 binary,
754 adapter.name.0.to_string(),
755 capabilities,
756 cx.clone(),
757 );
758
759 if let Some(fake_adapter) = adapter.as_fake() {
760 if let Some(initializer) = &fake_adapter.initializer {
761 initializer(&mut fake_server);
762 }
763 }
764
765 cx.background_executor()
766 .spawn(async move {
767 if fake_server
768 .try_receive_notification::<lsp::notification::Initialized>()
769 .await
770 .is_some()
771 {
772 if let Some(this) = this.upgrade() {
773 if let Some(txs) = this
774 .state
775 .write()
776 .fake_server_txs
777 .get_mut(language.name().as_ref())
778 {
779 for tx in txs {
780 tx.unbounded_send(fake_server.clone()).ok();
781 }
782 }
783 }
784 }
785 })
786 .detach();
787
788 return Ok((server, options));
789 }
790
791 drop(this);
792 Ok((
793 lsp::LanguageServer::new(
794 stderr_capture,
795 server_id,
796 binary,
797 &root_path,
798 adapter.code_action_kinds(),
799 cx,
800 )?,
801 options,
802 ))
803 }
804 });
805
806 Some(PendingLanguageServer {
807 server_id,
808 task,
809 container_dir: Some(container_dir),
810 })
811 }
812
813 pub fn language_server_binary_statuses(
814 &self,
815 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
816 self.lsp_binary_status_tx.subscribe()
817 }
818
819 pub fn delete_server_container(
820 &self,
821 adapter: Arc<CachedLspAdapter>,
822 cx: &mut AppContext,
823 ) -> Task<()> {
824 log::info!("deleting server container");
825
826 let download_dir = self
827 .language_server_download_dir
828 .clone()
829 .expect("language server download directory has not been assigned before deleting server container");
830
831 cx.spawn(|_| async move {
832 let container_dir = download_dir.join(adapter.name.0.as_ref());
833 smol::fs::remove_dir_all(container_dir)
834 .await
835 .context("server container removal")
836 .log_err();
837 })
838 }
839
840 pub fn next_language_server_id(&self) -> LanguageServerId {
841 self.state.write().next_language_server_id()
842 }
843}
844
845impl LanguageRegistryState {
846 fn next_language_server_id(&mut self) -> LanguageServerId {
847 LanguageServerId(post_inc(&mut self.next_language_server_id))
848 }
849
850 fn add(&mut self, language: Arc<Language>) {
851 if let Some(theme) = self.theme.as_ref() {
852 language.set_theme(theme.syntax());
853 }
854 self.languages.push(language);
855 self.version += 1;
856 *self.subscription.0.borrow_mut() = ();
857 }
858
859 fn reload(&mut self) {
860 self.languages.clear();
861 self.version += 1;
862 self.reload_count += 1;
863 for language in &mut self.available_languages {
864 language.loaded = false;
865 }
866 *self.subscription.0.borrow_mut() = ();
867 }
868
869 fn remove_languages(
870 &mut self,
871 languages_to_remove: &[Arc<str>],
872 grammars_to_remove: &[Arc<str>],
873 ) {
874 if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
875 return;
876 }
877
878 self.languages
879 .retain(|language| !languages_to_remove.contains(&language.name()));
880 self.available_languages
881 .retain(|language| !languages_to_remove.contains(&language.name));
882 self.grammars
883 .retain(|name, _| !grammars_to_remove.contains(&name));
884 self.version += 1;
885 self.reload_count += 1;
886 *self.subscription.0.borrow_mut() = ();
887 }
888
889 /// Mark the given language as having been loaded, so that the
890 /// language registry won't try to load it again.
891 fn mark_language_loaded(&mut self, id: LanguageId) {
892 for language in &mut self.available_languages {
893 if language.id == id {
894 language.loaded = true;
895 break;
896 }
897 }
898 }
899}
900
901impl LspBinaryStatusSender {
902 fn subscribe(
903 &self,
904 ) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
905 let (tx, rx) = mpsc::unbounded();
906 self.txs.lock().push(tx);
907 rx
908 }
909
910 fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
911 let mut txs = self.txs.lock();
912 txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
913 }
914}