1mod buffer;
2mod diagnostic_set;
3mod highlight_map;
4mod outline;
5pub mod proto;
6mod syntax_map;
7
8#[cfg(test)]
9mod buffer_tests;
10
11use anyhow::{anyhow, Context, Result};
12use async_trait::async_trait;
13use client::http::HttpClient;
14use collections::HashMap;
15use futures::{
16 channel::oneshot,
17 future::{BoxFuture, Shared},
18 FutureExt, TryFutureExt as _,
19};
20use gpui::{executor::Background, MutableAppContext, Task};
21use highlight_map::HighlightMap;
22use lazy_static::lazy_static;
23use parking_lot::{Mutex, RwLock};
24use postage::watch;
25use regex::Regex;
26use serde::{de, Deserialize, Deserializer};
27use serde_json::Value;
28use std::{
29 any::Any,
30 borrow::Cow,
31 cell::RefCell,
32 fmt::Debug,
33 hash::Hash,
34 mem,
35 ops::Range,
36 path::{Path, PathBuf},
37 str,
38 sync::{
39 atomic::{AtomicUsize, Ordering::SeqCst},
40 Arc,
41 },
42};
43use syntax_map::SyntaxSnapshot;
44use theme::{SyntaxTheme, Theme};
45use tree_sitter::{self, Query};
46use unicase::UniCase;
47use util::{merge_json_value_into, post_inc, ResultExt, TryFutureExt as _, UnwrapFuture};
48
49#[cfg(any(test, feature = "test-support"))]
50use futures::channel::mpsc;
51
52pub use buffer::Operation;
53pub use buffer::*;
54pub use diagnostic_set::DiagnosticEntry;
55pub use outline::{Outline, OutlineItem};
56pub use tree_sitter::{Parser, Tree};
57
58thread_local! {
59 static PARSER: RefCell<Parser> = RefCell::new(Parser::new());
60}
61
62lazy_static! {
63 pub static ref NEXT_GRAMMAR_ID: AtomicUsize = Default::default();
64 pub static ref PLAIN_TEXT: Arc<Language> = Arc::new(Language::new(
65 LanguageConfig {
66 name: "Plain Text".into(),
67 ..Default::default()
68 },
69 None,
70 ));
71}
72
73pub trait ToLspPosition {
74 fn to_lsp_position(self) -> lsp::Position;
75}
76
77#[derive(Clone, Debug, PartialEq, Eq, Hash)]
78pub struct LanguageServerName(pub Arc<str>);
79
80#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize)]
81pub enum ServerExecutionKind {
82 Launch,
83 Node,
84}
85
86#[derive(Debug, Clone, Deserialize)]
87pub struct LanguageServerBinary {
88 pub path: PathBuf,
89 pub arguments: Vec<String>,
90}
91
92/// Represents a Language Server, with certain cached sync properties.
93/// Uses [`LspAdapter`] under the hood, but calls all 'static' methods
94/// once at startup, and caches the results.
95pub struct CachedLspAdapter {
96 pub name: LanguageServerName,
97 pub initialization_options: Option<Value>,
98 pub disk_based_diagnostic_sources: Vec<String>,
99 pub disk_based_diagnostics_progress_token: Option<String>,
100 pub language_ids: HashMap<String, String>,
101 pub adapter: Arc<dyn LspAdapter>,
102}
103
104impl CachedLspAdapter {
105 pub async fn new(adapter: Arc<dyn LspAdapter>) -> Arc<Self> {
106 let name = adapter.name().await;
107 let initialization_options = adapter.initialization_options().await;
108 let disk_based_diagnostic_sources = adapter.disk_based_diagnostic_sources().await;
109 let disk_based_diagnostics_progress_token =
110 adapter.disk_based_diagnostics_progress_token().await;
111 let language_ids = adapter.language_ids().await;
112
113 Arc::new(CachedLspAdapter {
114 name,
115 initialization_options,
116 disk_based_diagnostic_sources,
117 disk_based_diagnostics_progress_token,
118 language_ids,
119 adapter,
120 })
121 }
122
123 pub async fn fetch_latest_server_version(
124 &self,
125 http: Arc<dyn HttpClient>,
126 ) -> Result<Box<dyn 'static + Send + Any>> {
127 self.adapter.fetch_latest_server_version(http).await
128 }
129
130 pub async fn fetch_server_binary(
131 &self,
132 version: Box<dyn 'static + Send + Any>,
133 http: Arc<dyn HttpClient>,
134 container_dir: PathBuf,
135 ) -> Result<LanguageServerBinary> {
136 self.adapter
137 .fetch_server_binary(version, http, container_dir)
138 .await
139 }
140
141 pub async fn cached_server_binary(
142 &self,
143 container_dir: PathBuf,
144 ) -> Option<LanguageServerBinary> {
145 self.adapter.cached_server_binary(container_dir).await
146 }
147
148 pub fn workspace_configuration(
149 &self,
150 cx: &mut MutableAppContext,
151 ) -> Option<BoxFuture<'static, Value>> {
152 self.adapter.workspace_configuration(cx)
153 }
154
155 pub async fn process_diagnostics(&self, params: &mut lsp::PublishDiagnosticsParams) {
156 self.adapter.process_diagnostics(params).await
157 }
158
159 pub async fn process_completion(&self, completion_item: &mut lsp::CompletionItem) {
160 self.adapter.process_completion(completion_item).await
161 }
162
163 pub async fn label_for_completion(
164 &self,
165 completion_item: &lsp::CompletionItem,
166 language: &Arc<Language>,
167 ) -> Option<CodeLabel> {
168 self.adapter
169 .label_for_completion(completion_item, language)
170 .await
171 }
172
173 pub async fn label_for_symbol(
174 &self,
175 name: &str,
176 kind: lsp::SymbolKind,
177 language: &Arc<Language>,
178 ) -> Option<CodeLabel> {
179 self.adapter.label_for_symbol(name, kind, language).await
180 }
181}
182
183#[async_trait]
184pub trait LspAdapter: 'static + Send + Sync {
185 async fn name(&self) -> LanguageServerName;
186
187 async fn server_execution_kind(&self) -> ServerExecutionKind;
188
189 async fn fetch_latest_server_version(
190 &self,
191 http: Arc<dyn HttpClient>,
192 ) -> Result<Box<dyn 'static + Send + Any>>;
193
194 async fn fetch_server_binary(
195 &self,
196 version: Box<dyn 'static + Send + Any>,
197 http: Arc<dyn HttpClient>,
198 container_dir: PathBuf,
199 ) -> Result<LanguageServerBinary>;
200
201 async fn cached_server_binary(&self, container_dir: PathBuf) -> Option<LanguageServerBinary>;
202
203 async fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
204
205 async fn process_completion(&self, _: &mut lsp::CompletionItem) {}
206
207 async fn label_for_completion(
208 &self,
209 _: &lsp::CompletionItem,
210 _: &Arc<Language>,
211 ) -> Option<CodeLabel> {
212 None
213 }
214
215 async fn label_for_symbol(
216 &self,
217 _: &str,
218 _: lsp::SymbolKind,
219 _: &Arc<Language>,
220 ) -> Option<CodeLabel> {
221 None
222 }
223
224 async fn initialization_options(&self) -> Option<Value> {
225 None
226 }
227
228 fn workspace_configuration(
229 &self,
230 _: &mut MutableAppContext,
231 ) -> Option<BoxFuture<'static, Value>> {
232 None
233 }
234
235 async fn disk_based_diagnostic_sources(&self) -> Vec<String> {
236 Default::default()
237 }
238
239 async fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
240 None
241 }
242
243 async fn language_ids(&self) -> HashMap<String, String> {
244 Default::default()
245 }
246}
247
248#[derive(Clone, Debug, PartialEq, Eq)]
249pub struct CodeLabel {
250 pub text: String,
251 pub runs: Vec<(Range<usize>, HighlightId)>,
252 pub filter_range: Range<usize>,
253}
254
255#[derive(Clone, Deserialize)]
256pub struct LanguageConfig {
257 pub name: Arc<str>,
258 pub path_suffixes: Vec<String>,
259 pub brackets: BracketPairConfig,
260 #[serde(default = "auto_indent_using_last_non_empty_line_default")]
261 pub auto_indent_using_last_non_empty_line: bool,
262 #[serde(default, deserialize_with = "deserialize_regex")]
263 pub increase_indent_pattern: Option<Regex>,
264 #[serde(default, deserialize_with = "deserialize_regex")]
265 pub decrease_indent_pattern: Option<Regex>,
266 #[serde(default)]
267 pub autoclose_before: String,
268 #[serde(default)]
269 pub line_comment: Option<Arc<str>>,
270 #[serde(default)]
271 pub block_comment: Option<(Arc<str>, Arc<str>)>,
272 #[serde(default)]
273 pub overrides: HashMap<String, LanguageConfigOverride>,
274}
275
276#[derive(Debug, Default)]
277pub struct LanguageQueries {
278 pub highlights: Option<Cow<'static, str>>,
279 pub brackets: Option<Cow<'static, str>>,
280 pub indents: Option<Cow<'static, str>>,
281 pub outline: Option<Cow<'static, str>>,
282 pub injections: Option<Cow<'static, str>>,
283 pub overrides: Option<Cow<'static, str>>,
284}
285
286#[derive(Clone, Debug)]
287pub struct LanguageScope {
288 language: Arc<Language>,
289 override_id: Option<u32>,
290}
291
292#[derive(Clone, Deserialize, Default, Debug)]
293pub struct LanguageConfigOverride {
294 #[serde(default)]
295 pub line_comment: Override<Arc<str>>,
296 #[serde(default)]
297 pub block_comment: Override<(Arc<str>, Arc<str>)>,
298 #[serde(skip_deserializing)]
299 pub disabled_bracket_ixs: Vec<u16>,
300}
301
302#[derive(Clone, Deserialize, Debug)]
303#[serde(untagged)]
304pub enum Override<T> {
305 Remove { remove: bool },
306 Set(T),
307}
308
309impl<T> Default for Override<T> {
310 fn default() -> Self {
311 Override::Remove { remove: false }
312 }
313}
314
315impl<T> Override<T> {
316 fn as_option<'a>(this: Option<&'a Self>, original: Option<&'a T>) -> Option<&'a T> {
317 match this {
318 Some(Self::Set(value)) => Some(value),
319 Some(Self::Remove { remove: true }) => None,
320 Some(Self::Remove { remove: false }) | None => original,
321 }
322 }
323}
324
325impl Default for LanguageConfig {
326 fn default() -> Self {
327 Self {
328 name: "".into(),
329 path_suffixes: Default::default(),
330 brackets: Default::default(),
331 auto_indent_using_last_non_empty_line: auto_indent_using_last_non_empty_line_default(),
332 increase_indent_pattern: Default::default(),
333 decrease_indent_pattern: Default::default(),
334 autoclose_before: Default::default(),
335 line_comment: Default::default(),
336 block_comment: Default::default(),
337 overrides: Default::default(),
338 }
339 }
340}
341
342fn auto_indent_using_last_non_empty_line_default() -> bool {
343 true
344}
345
346fn deserialize_regex<'de, D: Deserializer<'de>>(d: D) -> Result<Option<Regex>, D::Error> {
347 let source = Option::<String>::deserialize(d)?;
348 if let Some(source) = source {
349 Ok(Some(regex::Regex::new(&source).map_err(de::Error::custom)?))
350 } else {
351 Ok(None)
352 }
353}
354
355#[cfg(any(test, feature = "test-support"))]
356pub struct FakeLspAdapter {
357 pub name: &'static str,
358 pub capabilities: lsp::ServerCapabilities,
359 pub initializer: Option<Box<dyn 'static + Send + Sync + Fn(&mut lsp::FakeLanguageServer)>>,
360 pub disk_based_diagnostics_progress_token: Option<String>,
361 pub disk_based_diagnostics_sources: Vec<String>,
362}
363
364#[derive(Clone, Debug, Default)]
365pub struct BracketPairConfig {
366 pub pairs: Vec<BracketPair>,
367 pub disabled_scopes_by_bracket_ix: Vec<Vec<String>>,
368}
369
370impl<'de> Deserialize<'de> for BracketPairConfig {
371 fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
372 where
373 D: Deserializer<'de>,
374 {
375 #[derive(Deserialize)]
376 pub struct Entry {
377 #[serde(flatten)]
378 pub bracket_pair: BracketPair,
379 #[serde(default)]
380 pub not_in: Vec<String>,
381 }
382
383 let result = Vec::<Entry>::deserialize(deserializer)?;
384 let mut brackets = Vec::with_capacity(result.len());
385 let mut disabled_scopes_by_bracket_ix = Vec::with_capacity(result.len());
386 for entry in result {
387 brackets.push(entry.bracket_pair);
388 disabled_scopes_by_bracket_ix.push(entry.not_in);
389 }
390
391 Ok(BracketPairConfig {
392 pairs: brackets,
393 disabled_scopes_by_bracket_ix,
394 })
395 }
396}
397
398#[derive(Clone, Debug, Default, Deserialize, PartialEq)]
399pub struct BracketPair {
400 pub start: String,
401 pub end: String,
402 pub close: bool,
403 pub newline: bool,
404}
405
406pub struct Language {
407 pub(crate) config: LanguageConfig,
408 pub(crate) grammar: Option<Arc<Grammar>>,
409 pub(crate) adapter: Option<Arc<CachedLspAdapter>>,
410
411 #[cfg(any(test, feature = "test-support"))]
412 fake_adapter: Option<(
413 mpsc::UnboundedSender<lsp::FakeLanguageServer>,
414 Arc<FakeLspAdapter>,
415 )>,
416}
417
418pub struct Grammar {
419 id: usize,
420 pub(crate) ts_language: tree_sitter::Language,
421 pub(crate) error_query: Query,
422 pub(crate) highlights_query: Option<Query>,
423 pub(crate) brackets_config: Option<BracketConfig>,
424 pub(crate) indents_config: Option<IndentConfig>,
425 pub(crate) outline_config: Option<OutlineConfig>,
426 pub(crate) injection_config: Option<InjectionConfig>,
427 pub(crate) override_config: Option<OverrideConfig>,
428 pub(crate) highlight_map: Mutex<HighlightMap>,
429}
430
431struct IndentConfig {
432 query: Query,
433 indent_capture_ix: u32,
434 start_capture_ix: Option<u32>,
435 end_capture_ix: Option<u32>,
436 outdent_capture_ix: Option<u32>,
437}
438
439struct OutlineConfig {
440 query: Query,
441 item_capture_ix: u32,
442 name_capture_ix: u32,
443 context_capture_ix: Option<u32>,
444}
445
446struct InjectionConfig {
447 query: Query,
448 content_capture_ix: u32,
449 language_capture_ix: Option<u32>,
450 patterns: Vec<InjectionPatternConfig>,
451}
452
453struct OverrideConfig {
454 query: Query,
455 values: HashMap<u32, (String, LanguageConfigOverride)>,
456}
457
458#[derive(Default, Clone)]
459struct InjectionPatternConfig {
460 language: Option<Box<str>>,
461 combined: bool,
462}
463
464struct BracketConfig {
465 query: Query,
466 open_capture_ix: u32,
467 close_capture_ix: u32,
468}
469
470#[derive(Clone)]
471pub enum LanguageServerBinaryStatus {
472 CheckingForUpdate,
473 Downloading,
474 Downloaded,
475 Cached,
476 Failed { error: String },
477}
478
479type AvailableLanguageId = usize;
480
481#[derive(Clone)]
482struct AvailableLanguage {
483 id: AvailableLanguageId,
484 path: &'static str,
485 config: LanguageConfig,
486 grammar: tree_sitter::Language,
487 lsp_adapter: Option<Arc<dyn LspAdapter>>,
488 get_queries: fn(&str) -> LanguageQueries,
489}
490
491pub struct LanguageRegistry {
492 state: RwLock<LanguageRegistryState>,
493 language_server_download_dir: Option<Arc<Path>>,
494 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
495 lsp_binary_statuses_rx: async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)>,
496 login_shell_env_loaded: Shared<Task<()>>,
497 node_path: Shared<Task<Option<PathBuf>>>,
498 #[allow(clippy::type_complexity)]
499 lsp_binary_paths: Mutex<
500 HashMap<
501 LanguageServerName,
502 Shared<BoxFuture<'static, Result<LanguageServerBinary, Arc<anyhow::Error>>>>,
503 >,
504 >,
505 executor: Option<Arc<Background>>,
506}
507
508struct LanguageRegistryState {
509 languages: Vec<Arc<Language>>,
510 available_languages: Vec<AvailableLanguage>,
511 next_available_language_id: AvailableLanguageId,
512 loading_languages: HashMap<AvailableLanguageId, Vec<oneshot::Sender<Result<Arc<Language>>>>>,
513 subscription: (watch::Sender<()>, watch::Receiver<()>),
514 theme: Option<Arc<Theme>>,
515 version: usize,
516}
517
518impl LanguageRegistry {
519 pub fn new(login_shell_env_loaded: Task<()>, node_path: Task<Option<PathBuf>>) -> Self {
520 let (lsp_binary_statuses_tx, lsp_binary_statuses_rx) = async_broadcast::broadcast(16);
521 Self {
522 state: RwLock::new(LanguageRegistryState {
523 languages: vec![PLAIN_TEXT.clone()],
524 available_languages: Default::default(),
525 next_available_language_id: 0,
526 loading_languages: Default::default(),
527 subscription: watch::channel(),
528 theme: Default::default(),
529 version: 0,
530 }),
531 language_server_download_dir: None,
532 lsp_binary_statuses_tx,
533 lsp_binary_statuses_rx,
534 login_shell_env_loaded: login_shell_env_loaded.shared(),
535 node_path: node_path.shared(),
536 lsp_binary_paths: Default::default(),
537 executor: None,
538 }
539 }
540
541 #[cfg(any(test, feature = "test-support"))]
542 pub fn test() -> Self {
543 Self::new(Task::ready(()), Task::Ready(None))
544 }
545
546 pub fn set_executor(&mut self, executor: Arc<Background>) {
547 self.executor = Some(executor);
548 }
549
550 pub fn register(
551 &self,
552 path: &'static str,
553 config: LanguageConfig,
554 grammar: tree_sitter::Language,
555 lsp_adapter: Option<Arc<dyn LspAdapter>>,
556 get_queries: fn(&str) -> LanguageQueries,
557 ) {
558 let state = &mut *self.state.write();
559 state.available_languages.push(AvailableLanguage {
560 id: post_inc(&mut state.next_available_language_id),
561 path,
562 config,
563 grammar,
564 lsp_adapter,
565 get_queries,
566 });
567 }
568
569 pub fn language_names(&self) -> Vec<String> {
570 let state = self.state.read();
571 let mut result = state
572 .available_languages
573 .iter()
574 .map(|l| l.config.name.to_string())
575 .chain(state.languages.iter().map(|l| l.config.name.to_string()))
576 .collect::<Vec<_>>();
577 result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
578 result
579 }
580
581 pub fn workspace_configuration(&self, cx: &mut MutableAppContext) -> Task<serde_json::Value> {
582 let lsp_adapters = {
583 let state = self.state.read();
584 state
585 .available_languages
586 .iter()
587 .filter_map(|l| l.lsp_adapter.clone())
588 .chain(
589 state
590 .languages
591 .iter()
592 .filter_map(|l| l.adapter.as_ref().map(|a| a.adapter.clone())),
593 )
594 .collect::<Vec<_>>()
595 };
596
597 let mut language_configs = Vec::new();
598 for adapter in &lsp_adapters {
599 if let Some(language_config) = adapter.workspace_configuration(cx) {
600 language_configs.push(language_config);
601 }
602 }
603
604 cx.background().spawn(async move {
605 let mut config = serde_json::json!({});
606 let language_configs = futures::future::join_all(language_configs).await;
607 for language_config in language_configs {
608 merge_json_value_into(language_config, &mut config);
609 }
610 config
611 })
612 }
613
614 pub fn add(&self, language: Arc<Language>) {
615 self.state.write().add(language);
616 }
617
618 pub fn subscribe(&self) -> watch::Receiver<()> {
619 self.state.read().subscription.1.clone()
620 }
621
622 pub fn version(&self) -> usize {
623 self.state.read().version
624 }
625
626 pub fn set_theme(&self, theme: Arc<Theme>) {
627 let mut state = self.state.write();
628 state.theme = Some(theme.clone());
629 for language in &state.languages {
630 language.set_theme(&theme.editor.syntax);
631 }
632 }
633
634 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
635 self.language_server_download_dir = Some(path.into());
636 }
637
638 pub fn language_for_name(
639 self: &Arc<Self>,
640 name: &str,
641 ) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
642 let name = UniCase::new(name);
643 self.get_or_load_language(|config| UniCase::new(config.name.as_ref()) == name)
644 }
645
646 pub fn language_for_name_or_extension(
647 self: &Arc<Self>,
648 string: &str,
649 ) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
650 let string = UniCase::new(string);
651 self.get_or_load_language(|config| {
652 UniCase::new(config.name.as_ref()) == string
653 || config
654 .path_suffixes
655 .iter()
656 .any(|suffix| UniCase::new(suffix) == string)
657 })
658 }
659
660 pub fn language_for_path(
661 self: &Arc<Self>,
662 path: impl AsRef<Path>,
663 ) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
664 let path = path.as_ref();
665 let filename = path.file_name().and_then(|name| name.to_str());
666 let extension = path.extension().and_then(|name| name.to_str());
667 let path_suffixes = [extension, filename];
668 self.get_or_load_language(|config| {
669 config
670 .path_suffixes
671 .iter()
672 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())))
673 })
674 }
675
676 fn get_or_load_language(
677 self: &Arc<Self>,
678 callback: impl Fn(&LanguageConfig) -> bool,
679 ) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
680 let (tx, rx) = oneshot::channel();
681
682 let mut state = self.state.write();
683 if let Some(language) = state
684 .languages
685 .iter()
686 .find(|language| callback(&language.config))
687 {
688 let _ = tx.send(Ok(language.clone()));
689 } else if let Some(executor) = self.executor.clone() {
690 if let Some(language) = state
691 .available_languages
692 .iter()
693 .find(|l| callback(&l.config))
694 .cloned()
695 {
696 let txs = state
697 .loading_languages
698 .entry(language.id)
699 .or_insert_with(|| {
700 let this = self.clone();
701 executor
702 .spawn(async move {
703 let id = language.id;
704 let queries = (language.get_queries)(&language.path);
705 let language =
706 Language::new(language.config, Some(language.grammar))
707 .with_lsp_adapter(language.lsp_adapter)
708 .await;
709 let name = language.name();
710 match language.with_queries(queries) {
711 Ok(language) => {
712 let language = Arc::new(language);
713 let mut state = this.state.write();
714 state.add(language.clone());
715 state
716 .available_languages
717 .retain(|language| language.id != id);
718 if let Some(mut txs) = state.loading_languages.remove(&id) {
719 for tx in txs.drain(..) {
720 let _ = tx.send(Ok(language.clone()));
721 }
722 }
723 }
724 Err(err) => {
725 let mut state = this.state.write();
726 state
727 .available_languages
728 .retain(|language| language.id != id);
729 if let Some(mut txs) = state.loading_languages.remove(&id) {
730 for tx in txs.drain(..) {
731 let _ = tx.send(Err(anyhow!(
732 "failed to load language {}: {}",
733 name,
734 err
735 )));
736 }
737 }
738 }
739 };
740 })
741 .detach();
742
743 Vec::new()
744 });
745 txs.push(tx);
746 } else {
747 let _ = tx.send(Err(anyhow!("language not found")));
748 }
749 } else {
750 let _ = tx.send(Err(anyhow!("executor does not exist")));
751 }
752
753 rx.unwrap()
754 }
755
756 pub fn to_vec(&self) -> Vec<Arc<Language>> {
757 self.state.read().languages.iter().cloned().collect()
758 }
759
760 pub fn start_language_server(
761 self: &Arc<Self>,
762 server_id: usize,
763 language: Arc<Language>,
764 root_path: Arc<Path>,
765 http_client: Arc<dyn HttpClient>,
766 cx: &mut MutableAppContext,
767 ) -> Option<Task<Result<lsp::LanguageServer>>> {
768 #[cfg(any(test, feature = "test-support"))]
769 if language.fake_adapter.is_some() {
770 let language = language;
771 return Some(cx.spawn(|cx| async move {
772 let (servers_tx, fake_adapter) = language.fake_adapter.as_ref().unwrap();
773 let (server, mut fake_server) = lsp::LanguageServer::fake(
774 fake_adapter.name.to_string(),
775 fake_adapter.capabilities.clone(),
776 cx.clone(),
777 );
778
779 if let Some(initializer) = &fake_adapter.initializer {
780 initializer(&mut fake_server);
781 }
782
783 let servers_tx = servers_tx.clone();
784 cx.background()
785 .spawn(async move {
786 if fake_server
787 .try_receive_notification::<lsp::notification::Initialized>()
788 .await
789 .is_some()
790 {
791 servers_tx.unbounded_send(fake_server).ok();
792 }
793 })
794 .detach();
795 Ok(server)
796 }));
797 }
798
799 let download_dir = self
800 .language_server_download_dir
801 .clone()
802 .ok_or_else(|| anyhow!("language server download directory has not been assigned"))
803 .log_err()?;
804
805 let this = self.clone();
806 let adapter = language.adapter.clone()?;
807 let lsp_binary_statuses = self.lsp_binary_statuses_tx.clone();
808 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
809 let node_path = self.node_path.clone();
810
811 Some(cx.spawn(|cx| async move {
812 login_shell_env_loaded.await;
813 let node_path = node_path.await;
814
815 let server_binary = this
816 .lsp_binary_paths
817 .lock()
818 .entry(adapter.name.clone())
819 .or_insert_with(|| {
820 get_server_binary(
821 adapter.clone(),
822 language.clone(),
823 http_client,
824 download_dir,
825 lsp_binary_statuses,
826 )
827 .map_err(Arc::new)
828 .boxed()
829 .shared()
830 })
831 .clone()
832 .map_err(|e| anyhow!(e));
833
834 let server_binary = server_binary.await?;
835 let server_name = server_binary
836 .path
837 .file_name()
838 .map(|name| name.to_string_lossy().to_string());
839
840 let mut command = match adapter.adapter.server_execution_kind().await {
841 ServerExecutionKind::Node => {
842 let node_path = node_path
843 .ok_or(anyhow!("Missing Node path for Node based language server"))?;
844 let node_binary = node_path.join("bin/node");
845 let mut command = smol::process::Command::new(node_binary);
846 command.arg(dbg!(server_binary.path));
847 command
848 }
849
850 ServerExecutionKind::Launch => smol::process::Command::new(server_binary.path),
851 };
852
853 command.args(dbg!(&server_binary.arguments));
854 let server = lsp::LanguageServer::new(server_id, server_name, command, &root_path, cx)?;
855
856 Ok(server)
857 }))
858 }
859
860 pub fn language_server_binary_statuses(
861 &self,
862 ) -> async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)> {
863 self.lsp_binary_statuses_rx.clone()
864 }
865}
866
867impl LanguageRegistryState {
868 fn add(&mut self, language: Arc<Language>) {
869 if let Some(theme) = self.theme.as_ref() {
870 language.set_theme(&theme.editor.syntax);
871 }
872 self.languages.push(language);
873 self.version += 1;
874 *self.subscription.0.borrow_mut() = ();
875 }
876}
877
878#[cfg(any(test, feature = "test-support"))]
879impl Default for LanguageRegistry {
880 fn default() -> Self {
881 Self::test()
882 }
883}
884
885async fn get_server_binary(
886 adapter: Arc<CachedLspAdapter>,
887 language: Arc<Language>,
888 http_client: Arc<dyn HttpClient>,
889 download_dir: Arc<Path>,
890 statuses: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
891) -> Result<LanguageServerBinary> {
892 let container_dir = download_dir.join(adapter.name.0.as_ref());
893 if !container_dir.exists() {
894 smol::fs::create_dir_all(&container_dir)
895 .await
896 .context("failed to create container directory")?;
897 }
898
899 let binary = fetch_latest_server_binary(
900 adapter.clone(),
901 language.clone(),
902 http_client,
903 &container_dir,
904 statuses.clone(),
905 )
906 .await;
907 if let Err(error) = binary.as_ref() {
908 if let Some(cached) = adapter.cached_server_binary(container_dir).await {
909 statuses
910 .broadcast((language.clone(), LanguageServerBinaryStatus::Cached))
911 .await?;
912 return Ok(cached);
913 } else {
914 statuses
915 .broadcast((
916 language.clone(),
917 LanguageServerBinaryStatus::Failed {
918 error: format!("{:?}", error),
919 },
920 ))
921 .await?;
922 }
923 }
924 binary
925}
926
927async fn fetch_latest_server_binary(
928 adapter: Arc<CachedLspAdapter>,
929 language: Arc<Language>,
930 http_client: Arc<dyn HttpClient>,
931 container_dir: &Path,
932 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
933) -> Result<LanguageServerBinary> {
934 let container_dir: Arc<Path> = container_dir.into();
935 lsp_binary_statuses_tx
936 .broadcast((
937 language.clone(),
938 LanguageServerBinaryStatus::CheckingForUpdate,
939 ))
940 .await?;
941 let version_info = adapter
942 .fetch_latest_server_version(http_client.clone())
943 .await?;
944 lsp_binary_statuses_tx
945 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloading))
946 .await?;
947 let binary = adapter
948 .fetch_server_binary(version_info, http_client, container_dir.to_path_buf())
949 .await?;
950 lsp_binary_statuses_tx
951 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloaded))
952 .await?;
953 Ok(binary)
954}
955
956impl Language {
957 pub fn new(config: LanguageConfig, ts_language: Option<tree_sitter::Language>) -> Self {
958 Self {
959 config,
960 grammar: ts_language.map(|ts_language| {
961 Arc::new(Grammar {
962 id: NEXT_GRAMMAR_ID.fetch_add(1, SeqCst),
963 highlights_query: None,
964 brackets_config: None,
965 outline_config: None,
966 indents_config: None,
967 injection_config: None,
968 override_config: None,
969 error_query: Query::new(ts_language, "(ERROR) @error").unwrap(),
970 ts_language,
971 highlight_map: Default::default(),
972 })
973 }),
974 adapter: None,
975
976 #[cfg(any(test, feature = "test-support"))]
977 fake_adapter: None,
978 }
979 }
980
981 pub fn lsp_adapter(&self) -> Option<Arc<CachedLspAdapter>> {
982 self.adapter.clone()
983 }
984
985 pub fn id(&self) -> Option<usize> {
986 self.grammar.as_ref().map(|g| g.id)
987 }
988
989 pub fn with_queries(mut self, queries: LanguageQueries) -> Result<Self> {
990 if let Some(query) = queries.highlights {
991 self = self
992 .with_highlights_query(query.as_ref())
993 .expect("failed to evaluate highlights query");
994 }
995 if let Some(query) = queries.brackets {
996 self = self
997 .with_brackets_query(query.as_ref())
998 .expect("failed to load brackets query");
999 }
1000 if let Some(query) = queries.indents {
1001 self = self
1002 .with_indents_query(query.as_ref())
1003 .expect("failed to load indents query");
1004 }
1005 if let Some(query) = queries.outline {
1006 self = self
1007 .with_outline_query(query.as_ref())
1008 .expect("failed to load outline query");
1009 }
1010 if let Some(query) = queries.injections {
1011 self = self
1012 .with_injection_query(query.as_ref())
1013 .expect("failed to load injection query");
1014 }
1015 if let Some(query) = queries.overrides {
1016 self = self
1017 .with_override_query(query.as_ref())
1018 .expect("failed to load override query");
1019 }
1020 Ok(self)
1021 }
1022 pub fn with_highlights_query(mut self, source: &str) -> Result<Self> {
1023 let grammar = self.grammar_mut();
1024 grammar.highlights_query = Some(Query::new(grammar.ts_language, source)?);
1025 Ok(self)
1026 }
1027
1028 pub fn with_outline_query(mut self, source: &str) -> Result<Self> {
1029 let grammar = self.grammar_mut();
1030 let query = Query::new(grammar.ts_language, source)?;
1031 let mut item_capture_ix = None;
1032 let mut name_capture_ix = None;
1033 let mut context_capture_ix = None;
1034 get_capture_indices(
1035 &query,
1036 &mut [
1037 ("item", &mut item_capture_ix),
1038 ("name", &mut name_capture_ix),
1039 ("context", &mut context_capture_ix),
1040 ],
1041 );
1042 if let Some((item_capture_ix, name_capture_ix)) = item_capture_ix.zip(name_capture_ix) {
1043 grammar.outline_config = Some(OutlineConfig {
1044 query,
1045 item_capture_ix,
1046 name_capture_ix,
1047 context_capture_ix,
1048 });
1049 }
1050 Ok(self)
1051 }
1052
1053 pub fn with_brackets_query(mut self, source: &str) -> Result<Self> {
1054 let grammar = self.grammar_mut();
1055 let query = Query::new(grammar.ts_language, source)?;
1056 let mut open_capture_ix = None;
1057 let mut close_capture_ix = None;
1058 get_capture_indices(
1059 &query,
1060 &mut [
1061 ("open", &mut open_capture_ix),
1062 ("close", &mut close_capture_ix),
1063 ],
1064 );
1065 if let Some((open_capture_ix, close_capture_ix)) = open_capture_ix.zip(close_capture_ix) {
1066 grammar.brackets_config = Some(BracketConfig {
1067 query,
1068 open_capture_ix,
1069 close_capture_ix,
1070 });
1071 }
1072 Ok(self)
1073 }
1074
1075 pub fn with_indents_query(mut self, source: &str) -> Result<Self> {
1076 let grammar = self.grammar_mut();
1077 let query = Query::new(grammar.ts_language, source)?;
1078 let mut indent_capture_ix = None;
1079 let mut start_capture_ix = None;
1080 let mut end_capture_ix = None;
1081 let mut outdent_capture_ix = None;
1082 get_capture_indices(
1083 &query,
1084 &mut [
1085 ("indent", &mut indent_capture_ix),
1086 ("start", &mut start_capture_ix),
1087 ("end", &mut end_capture_ix),
1088 ("outdent", &mut outdent_capture_ix),
1089 ],
1090 );
1091 if let Some(indent_capture_ix) = indent_capture_ix {
1092 grammar.indents_config = Some(IndentConfig {
1093 query,
1094 indent_capture_ix,
1095 start_capture_ix,
1096 end_capture_ix,
1097 outdent_capture_ix,
1098 });
1099 }
1100 Ok(self)
1101 }
1102
1103 pub fn with_injection_query(mut self, source: &str) -> Result<Self> {
1104 let grammar = self.grammar_mut();
1105 let query = Query::new(grammar.ts_language, source)?;
1106 let mut language_capture_ix = None;
1107 let mut content_capture_ix = None;
1108 get_capture_indices(
1109 &query,
1110 &mut [
1111 ("language", &mut language_capture_ix),
1112 ("content", &mut content_capture_ix),
1113 ],
1114 );
1115 let patterns = (0..query.pattern_count())
1116 .map(|ix| {
1117 let mut config = InjectionPatternConfig::default();
1118 for setting in query.property_settings(ix) {
1119 match setting.key.as_ref() {
1120 "language" => {
1121 config.language = setting.value.clone();
1122 }
1123 "combined" => {
1124 config.combined = true;
1125 }
1126 _ => {}
1127 }
1128 }
1129 config
1130 })
1131 .collect();
1132 if let Some(content_capture_ix) = content_capture_ix {
1133 grammar.injection_config = Some(InjectionConfig {
1134 query,
1135 language_capture_ix,
1136 content_capture_ix,
1137 patterns,
1138 });
1139 }
1140 Ok(self)
1141 }
1142
1143 pub fn with_override_query(mut self, source: &str) -> Result<Self> {
1144 let query = Query::new(self.grammar_mut().ts_language, source)?;
1145
1146 let mut override_configs_by_id = HashMap::default();
1147 for (ix, name) in query.capture_names().iter().enumerate() {
1148 if !name.starts_with('_') {
1149 let value = self.config.overrides.remove(name).unwrap_or_default();
1150 override_configs_by_id.insert(ix as u32, (name.clone(), value));
1151 }
1152 }
1153
1154 if !self.config.overrides.is_empty() {
1155 let keys = self.config.overrides.keys().collect::<Vec<_>>();
1156 Err(anyhow!(
1157 "language {:?} has overrides in config not in query: {keys:?}",
1158 self.config.name
1159 ))?;
1160 }
1161
1162 for disabled_scope_name in self
1163 .config
1164 .brackets
1165 .disabled_scopes_by_bracket_ix
1166 .iter()
1167 .flatten()
1168 {
1169 if !override_configs_by_id
1170 .values()
1171 .any(|(scope_name, _)| scope_name == disabled_scope_name)
1172 {
1173 Err(anyhow!(
1174 "language {:?} has overrides in config not in query: {disabled_scope_name:?}",
1175 self.config.name
1176 ))?;
1177 }
1178 }
1179
1180 for (name, override_config) in override_configs_by_id.values_mut() {
1181 override_config.disabled_bracket_ixs = self
1182 .config
1183 .brackets
1184 .disabled_scopes_by_bracket_ix
1185 .iter()
1186 .enumerate()
1187 .filter_map(|(ix, disabled_scope_names)| {
1188 if disabled_scope_names.contains(name) {
1189 Some(ix as u16)
1190 } else {
1191 None
1192 }
1193 })
1194 .collect();
1195 }
1196
1197 self.config.brackets.disabled_scopes_by_bracket_ix.clear();
1198 self.grammar_mut().override_config = Some(OverrideConfig {
1199 query,
1200 values: override_configs_by_id,
1201 });
1202 Ok(self)
1203 }
1204
1205 fn grammar_mut(&mut self) -> &mut Grammar {
1206 Arc::get_mut(self.grammar.as_mut().unwrap()).unwrap()
1207 }
1208
1209 pub async fn with_lsp_adapter(mut self, lsp_adapter: Option<Arc<dyn LspAdapter>>) -> Self {
1210 if let Some(adapter) = lsp_adapter {
1211 self.adapter = Some(CachedLspAdapter::new(adapter).await);
1212 }
1213 self
1214 }
1215
1216 #[cfg(any(test, feature = "test-support"))]
1217 pub async fn set_fake_lsp_adapter(
1218 &mut self,
1219 fake_lsp_adapter: Arc<FakeLspAdapter>,
1220 ) -> mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
1221 let (servers_tx, servers_rx) = mpsc::unbounded();
1222 self.fake_adapter = Some((servers_tx, fake_lsp_adapter.clone()));
1223 let adapter = CachedLspAdapter::new(Arc::new(fake_lsp_adapter)).await;
1224 self.adapter = Some(adapter);
1225 servers_rx
1226 }
1227
1228 pub fn name(&self) -> Arc<str> {
1229 self.config.name.clone()
1230 }
1231
1232 pub async fn disk_based_diagnostic_sources(&self) -> &[String] {
1233 match self.adapter.as_ref() {
1234 Some(adapter) => &adapter.disk_based_diagnostic_sources,
1235 None => &[],
1236 }
1237 }
1238
1239 pub async fn disk_based_diagnostics_progress_token(&self) -> Option<&str> {
1240 if let Some(adapter) = self.adapter.as_ref() {
1241 adapter.disk_based_diagnostics_progress_token.as_deref()
1242 } else {
1243 None
1244 }
1245 }
1246
1247 pub async fn process_diagnostics(&self, diagnostics: &mut lsp::PublishDiagnosticsParams) {
1248 if let Some(processor) = self.adapter.as_ref() {
1249 processor.process_diagnostics(diagnostics).await;
1250 }
1251 }
1252
1253 pub async fn process_completion(self: &Arc<Self>, completion: &mut lsp::CompletionItem) {
1254 if let Some(adapter) = self.adapter.as_ref() {
1255 adapter.process_completion(completion).await;
1256 }
1257 }
1258
1259 pub async fn label_for_completion(
1260 self: &Arc<Self>,
1261 completion: &lsp::CompletionItem,
1262 ) -> Option<CodeLabel> {
1263 self.adapter
1264 .as_ref()?
1265 .label_for_completion(completion, self)
1266 .await
1267 }
1268
1269 pub async fn label_for_symbol(
1270 self: &Arc<Self>,
1271 name: &str,
1272 kind: lsp::SymbolKind,
1273 ) -> Option<CodeLabel> {
1274 self.adapter
1275 .as_ref()?
1276 .label_for_symbol(name, kind, self)
1277 .await
1278 }
1279
1280 pub fn highlight_text<'a>(
1281 self: &'a Arc<Self>,
1282 text: &'a Rope,
1283 range: Range<usize>,
1284 ) -> Vec<(Range<usize>, HighlightId)> {
1285 let mut result = Vec::new();
1286 if let Some(grammar) = &self.grammar {
1287 let tree = grammar.parse_text(text, None);
1288 let captures =
1289 SyntaxSnapshot::single_tree_captures(range.clone(), text, &tree, self, |grammar| {
1290 grammar.highlights_query.as_ref()
1291 });
1292 let highlight_maps = vec![grammar.highlight_map()];
1293 let mut offset = 0;
1294 for chunk in BufferChunks::new(text, range, Some((captures, highlight_maps)), vec![]) {
1295 let end_offset = offset + chunk.text.len();
1296 if let Some(highlight_id) = chunk.syntax_highlight_id {
1297 if !highlight_id.is_default() {
1298 result.push((offset..end_offset, highlight_id));
1299 }
1300 }
1301 offset = end_offset;
1302 }
1303 }
1304 result
1305 }
1306
1307 pub fn path_suffixes(&self) -> &[String] {
1308 &self.config.path_suffixes
1309 }
1310
1311 pub fn should_autoclose_before(&self, c: char) -> bool {
1312 c.is_whitespace() || self.config.autoclose_before.contains(c)
1313 }
1314
1315 pub fn set_theme(&self, theme: &SyntaxTheme) {
1316 if let Some(grammar) = self.grammar.as_ref() {
1317 if let Some(highlights_query) = &grammar.highlights_query {
1318 *grammar.highlight_map.lock() =
1319 HighlightMap::new(highlights_query.capture_names(), theme);
1320 }
1321 }
1322 }
1323
1324 pub fn grammar(&self) -> Option<&Arc<Grammar>> {
1325 self.grammar.as_ref()
1326 }
1327}
1328
1329impl LanguageScope {
1330 pub fn line_comment_prefix(&self) -> Option<&Arc<str>> {
1331 Override::as_option(
1332 self.config_override().map(|o| &o.line_comment),
1333 self.language.config.line_comment.as_ref(),
1334 )
1335 }
1336
1337 pub fn block_comment_delimiters(&self) -> Option<(&Arc<str>, &Arc<str>)> {
1338 Override::as_option(
1339 self.config_override().map(|o| &o.block_comment),
1340 self.language.config.block_comment.as_ref(),
1341 )
1342 .map(|e| (&e.0, &e.1))
1343 }
1344
1345 pub fn brackets(&self) -> impl Iterator<Item = (&BracketPair, bool)> {
1346 let mut disabled_ids = self
1347 .config_override()
1348 .map_or(&[] as _, |o| o.disabled_bracket_ixs.as_slice());
1349 self.language
1350 .config
1351 .brackets
1352 .pairs
1353 .iter()
1354 .enumerate()
1355 .map(move |(ix, bracket)| {
1356 let mut is_enabled = true;
1357 if let Some(next_disabled_ix) = disabled_ids.first() {
1358 if ix == *next_disabled_ix as usize {
1359 disabled_ids = &disabled_ids[1..];
1360 is_enabled = false;
1361 }
1362 }
1363 (bracket, is_enabled)
1364 })
1365 }
1366
1367 pub fn should_autoclose_before(&self, c: char) -> bool {
1368 c.is_whitespace() || self.language.config.autoclose_before.contains(c)
1369 }
1370
1371 fn config_override(&self) -> Option<&LanguageConfigOverride> {
1372 let id = self.override_id?;
1373 let grammar = self.language.grammar.as_ref()?;
1374 let override_config = grammar.override_config.as_ref()?;
1375 override_config.values.get(&id).map(|e| &e.1)
1376 }
1377}
1378
1379impl Hash for Language {
1380 fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
1381 self.id().hash(state)
1382 }
1383}
1384
1385impl PartialEq for Language {
1386 fn eq(&self, other: &Self) -> bool {
1387 self.id().eq(&other.id())
1388 }
1389}
1390
1391impl Eq for Language {}
1392
1393impl Debug for Language {
1394 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
1395 f.debug_struct("Language")
1396 .field("name", &self.config.name)
1397 .finish()
1398 }
1399}
1400
1401impl Grammar {
1402 pub fn id(&self) -> usize {
1403 self.id
1404 }
1405
1406 fn parse_text(&self, text: &Rope, old_tree: Option<Tree>) -> Tree {
1407 PARSER.with(|parser| {
1408 let mut parser = parser.borrow_mut();
1409 parser
1410 .set_language(self.ts_language)
1411 .expect("incompatible grammar");
1412 let mut chunks = text.chunks_in_range(0..text.len());
1413 parser
1414 .parse_with(
1415 &mut move |offset, _| {
1416 chunks.seek(offset);
1417 chunks.next().unwrap_or("").as_bytes()
1418 },
1419 old_tree.as_ref(),
1420 )
1421 .unwrap()
1422 })
1423 }
1424
1425 pub fn highlight_map(&self) -> HighlightMap {
1426 self.highlight_map.lock().clone()
1427 }
1428
1429 pub fn highlight_id_for_name(&self, name: &str) -> Option<HighlightId> {
1430 let capture_id = self
1431 .highlights_query
1432 .as_ref()?
1433 .capture_index_for_name(name)?;
1434 Some(self.highlight_map.lock().get(capture_id))
1435 }
1436}
1437
1438impl CodeLabel {
1439 pub fn plain(text: String, filter_text: Option<&str>) -> Self {
1440 let mut result = Self {
1441 runs: Vec::new(),
1442 filter_range: 0..text.len(),
1443 text,
1444 };
1445 if let Some(filter_text) = filter_text {
1446 if let Some(ix) = result.text.find(filter_text) {
1447 result.filter_range = ix..ix + filter_text.len();
1448 }
1449 }
1450 result
1451 }
1452}
1453
1454#[cfg(any(test, feature = "test-support"))]
1455impl Default for FakeLspAdapter {
1456 fn default() -> Self {
1457 Self {
1458 name: "the-fake-language-server",
1459 capabilities: lsp::LanguageServer::full_capabilities(),
1460 initializer: None,
1461 disk_based_diagnostics_progress_token: None,
1462 disk_based_diagnostics_sources: Vec::new(),
1463 }
1464 }
1465}
1466
1467#[cfg(any(test, feature = "test-support"))]
1468#[async_trait]
1469impl LspAdapter for Arc<FakeLspAdapter> {
1470 async fn name(&self) -> LanguageServerName {
1471 LanguageServerName(self.name.into())
1472 }
1473
1474 async fn server_execution_kind(&self) -> ServerExecutionKind {
1475 ServerExecutionKind::Launch
1476 }
1477
1478 async fn fetch_latest_server_version(
1479 &self,
1480 _: Arc<dyn HttpClient>,
1481 ) -> Result<Box<dyn 'static + Send + Any>> {
1482 unreachable!();
1483 }
1484
1485 async fn fetch_server_binary(
1486 &self,
1487 _: Box<dyn 'static + Send + Any>,
1488 _: Arc<dyn HttpClient>,
1489 _: PathBuf,
1490 ) -> Result<LanguageServerBinary> {
1491 unreachable!();
1492 }
1493
1494 async fn cached_server_binary(&self, _: PathBuf) -> Option<LanguageServerBinary> {
1495 unreachable!();
1496 }
1497
1498 async fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
1499
1500 async fn disk_based_diagnostic_sources(&self) -> Vec<String> {
1501 self.disk_based_diagnostics_sources.clone()
1502 }
1503
1504 async fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
1505 self.disk_based_diagnostics_progress_token.clone()
1506 }
1507}
1508
1509fn get_capture_indices(query: &Query, captures: &mut [(&str, &mut Option<u32>)]) {
1510 for (ix, name) in query.capture_names().iter().enumerate() {
1511 for (capture_name, index) in captures.iter_mut() {
1512 if capture_name == name {
1513 **index = Some(ix as u32);
1514 break;
1515 }
1516 }
1517 }
1518}
1519
1520pub fn point_to_lsp(point: PointUtf16) -> lsp::Position {
1521 lsp::Position::new(point.row, point.column)
1522}
1523
1524pub fn point_from_lsp(point: lsp::Position) -> Unclipped<PointUtf16> {
1525 Unclipped(PointUtf16::new(point.line, point.character))
1526}
1527
1528pub fn range_to_lsp(range: Range<PointUtf16>) -> lsp::Range {
1529 lsp::Range {
1530 start: point_to_lsp(range.start),
1531 end: point_to_lsp(range.end),
1532 }
1533}
1534
1535pub fn range_from_lsp(range: lsp::Range) -> Range<Unclipped<PointUtf16>> {
1536 let mut start = point_from_lsp(range.start);
1537 let mut end = point_from_lsp(range.end);
1538 if start > end {
1539 mem::swap(&mut start, &mut end);
1540 }
1541 start..end
1542}
1543
1544#[cfg(test)]
1545mod tests {
1546 use gpui::TestAppContext;
1547
1548 use super::*;
1549
1550 #[gpui::test(iterations = 10)]
1551 async fn test_language_loading(cx: &mut TestAppContext) {
1552 let mut languages = LanguageRegistry::test();
1553 languages.set_executor(cx.background());
1554 let languages = Arc::new(languages);
1555 languages.register(
1556 "/JSON",
1557 LanguageConfig {
1558 name: "JSON".into(),
1559 path_suffixes: vec!["json".into()],
1560 ..Default::default()
1561 },
1562 tree_sitter_json::language(),
1563 None,
1564 |_| Default::default(),
1565 );
1566 languages.register(
1567 "/rust",
1568 LanguageConfig {
1569 name: "Rust".into(),
1570 path_suffixes: vec!["rs".into()],
1571 ..Default::default()
1572 },
1573 tree_sitter_rust::language(),
1574 None,
1575 |_| Default::default(),
1576 );
1577 assert_eq!(
1578 languages.language_names(),
1579 &[
1580 "JSON".to_string(),
1581 "Plain Text".to_string(),
1582 "Rust".to_string(),
1583 ]
1584 );
1585
1586 let rust1 = languages.language_for_name("Rust");
1587 let rust2 = languages.language_for_name("Rust");
1588
1589 // Ensure language is still listed even if it's being loaded.
1590 assert_eq!(
1591 languages.language_names(),
1592 &[
1593 "JSON".to_string(),
1594 "Plain Text".to_string(),
1595 "Rust".to_string(),
1596 ]
1597 );
1598
1599 let (rust1, rust2) = futures::join!(rust1, rust2);
1600 assert!(Arc::ptr_eq(&rust1.unwrap(), &rust2.unwrap()));
1601
1602 // Ensure language is still listed even after loading it.
1603 assert_eq!(
1604 languages.language_names(),
1605 &[
1606 "JSON".to_string(),
1607 "Plain Text".to_string(),
1608 "Rust".to_string(),
1609 ]
1610 );
1611
1612 // Loading an unknown language returns an error.
1613 assert!(languages.language_for_name("Unknown").await.is_err());
1614 }
1615}