1mod buffer;
2mod diagnostic_set;
3mod highlight_map;
4mod outline;
5pub mod proto;
6#[cfg(test)]
7mod tests;
8
9use anyhow::{anyhow, Context, Result};
10use async_trait::async_trait;
11use client::http::HttpClient;
12use collections::HashMap;
13use futures::{
14 future::{BoxFuture, Shared},
15 FutureExt, TryFutureExt,
16};
17use gpui::{MutableAppContext, Task};
18use highlight_map::HighlightMap;
19use lazy_static::lazy_static;
20use parking_lot::{Mutex, RwLock};
21use postage::watch;
22use regex::Regex;
23use serde::{de, Deserialize, Deserializer};
24use serde_json::Value;
25use std::{
26 any::Any,
27 cell::RefCell,
28 mem,
29 ops::Range,
30 path::{Path, PathBuf},
31 str,
32 sync::Arc,
33};
34use theme::{SyntaxTheme, Theme};
35use tree_sitter::{self, Query};
36use util::ResultExt;
37
38#[cfg(any(test, feature = "test-support"))]
39use futures::channel::mpsc;
40
41pub use buffer::Operation;
42pub use buffer::*;
43pub use diagnostic_set::DiagnosticEntry;
44pub use outline::{Outline, OutlineItem};
45pub use tree_sitter::{Parser, Tree};
46
47thread_local! {
48 static PARSER: RefCell<Parser> = RefCell::new(Parser::new());
49}
50
51lazy_static! {
52 pub static ref PLAIN_TEXT: Arc<Language> = Arc::new(Language::new(
53 LanguageConfig {
54 name: "Plain Text".into(),
55 ..Default::default()
56 },
57 None,
58 ));
59}
60
61pub trait ToLspPosition {
62 fn to_lsp_position(self) -> lsp::Position;
63}
64
65#[derive(Clone, Debug, PartialEq, Eq, Hash)]
66pub struct LanguageServerName(pub Arc<str>);
67
68/// Represents a Language Server, with certain cached sync properties.
69/// Uses [`LspAdapter`] under the hood, but calls all 'static' methods
70/// once at startup, and caches the results.
71pub struct CachedLspAdapter {
72 pub name: LanguageServerName,
73 pub server_args: Vec<String>,
74 pub initialization_options: Option<Value>,
75 pub disk_based_diagnostic_sources: Vec<String>,
76 pub disk_based_diagnostics_progress_token: Option<String>,
77 pub language_ids: HashMap<String, String>,
78 pub adapter: Box<dyn LspAdapter>,
79}
80
81impl CachedLspAdapter {
82 pub async fn new<T: LspAdapter>(adapter: T) -> Arc<Self> {
83 let adapter = Box::new(adapter);
84 let name = adapter.name().await;
85 let server_args = adapter.server_args().await;
86 let initialization_options = adapter.initialization_options().await;
87 let disk_based_diagnostic_sources = adapter.disk_based_diagnostic_sources().await;
88 let disk_based_diagnostics_progress_token =
89 adapter.disk_based_diagnostics_progress_token().await;
90 let language_ids = adapter.language_ids().await;
91
92 Arc::new(CachedLspAdapter {
93 name,
94 server_args,
95 initialization_options,
96 disk_based_diagnostic_sources,
97 disk_based_diagnostics_progress_token,
98 language_ids,
99 adapter,
100 })
101 }
102
103 pub async fn fetch_latest_server_version(
104 &self,
105 http: Arc<dyn HttpClient>,
106 ) -> Result<Box<dyn 'static + Send + Any>> {
107 self.adapter.fetch_latest_server_version(http).await
108 }
109
110 pub async fn fetch_server_binary(
111 &self,
112 version: Box<dyn 'static + Send + Any>,
113 http: Arc<dyn HttpClient>,
114 container_dir: PathBuf,
115 ) -> Result<PathBuf> {
116 self.adapter
117 .fetch_server_binary(version, http, container_dir)
118 .await
119 }
120
121 pub async fn cached_server_binary(&self, container_dir: PathBuf) -> Option<PathBuf> {
122 self.adapter.cached_server_binary(container_dir).await
123 }
124
125 pub async fn process_diagnostics(&self, params: &mut lsp::PublishDiagnosticsParams) {
126 self.adapter.process_diagnostics(params).await
127 }
128
129 pub async fn label_for_completion(
130 &self,
131 completion_item: &lsp::CompletionItem,
132 language: &Language,
133 ) -> Option<CodeLabel> {
134 self.adapter
135 .label_for_completion(completion_item, language)
136 .await
137 }
138
139 pub async fn label_for_symbol(
140 &self,
141 name: &str,
142 kind: lsp::SymbolKind,
143 language: &Language,
144 ) -> Option<CodeLabel> {
145 self.adapter.label_for_symbol(name, kind, language).await
146 }
147}
148
149#[async_trait]
150pub trait LspAdapter: 'static + Send + Sync {
151 async fn name(&self) -> LanguageServerName;
152
153 async fn fetch_latest_server_version(
154 &self,
155 http: Arc<dyn HttpClient>,
156 ) -> Result<Box<dyn 'static + Send + Any>>;
157
158 async fn fetch_server_binary(
159 &self,
160 version: Box<dyn 'static + Send + Any>,
161 http: Arc<dyn HttpClient>,
162 container_dir: PathBuf,
163 ) -> Result<PathBuf>;
164
165 async fn cached_server_binary(&self, container_dir: PathBuf) -> Option<PathBuf>;
166
167 async fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
168
169 async fn label_for_completion(
170 &self,
171 _: &lsp::CompletionItem,
172 _: &Language,
173 ) -> Option<CodeLabel> {
174 None
175 }
176
177 async fn label_for_symbol(
178 &self,
179 _: &str,
180 _: lsp::SymbolKind,
181 _: &Language,
182 ) -> Option<CodeLabel> {
183 None
184 }
185
186 async fn server_args(&self) -> Vec<String> {
187 Vec::new()
188 }
189
190 async fn initialization_options(&self) -> Option<Value> {
191 None
192 }
193
194 async fn disk_based_diagnostic_sources(&self) -> Vec<String> {
195 Default::default()
196 }
197
198 async fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
199 None
200 }
201
202 async fn language_ids(&self) -> HashMap<String, String> {
203 Default::default()
204 }
205}
206
207#[derive(Clone, Debug, PartialEq, Eq)]
208pub struct CodeLabel {
209 pub text: String,
210 pub runs: Vec<(Range<usize>, HighlightId)>,
211 pub filter_range: Range<usize>,
212}
213
214#[derive(Deserialize)]
215pub struct LanguageConfig {
216 pub name: Arc<str>,
217 pub path_suffixes: Vec<String>,
218 pub brackets: Vec<BracketPair>,
219 #[serde(default = "auto_indent_using_last_non_empty_line_default")]
220 pub auto_indent_using_last_non_empty_line: bool,
221 #[serde(default, deserialize_with = "deserialize_regex")]
222 pub increase_indent_pattern: Option<Regex>,
223 #[serde(default, deserialize_with = "deserialize_regex")]
224 pub decrease_indent_pattern: Option<Regex>,
225 #[serde(default)]
226 pub autoclose_before: String,
227 pub line_comment: Option<String>,
228}
229
230impl Default for LanguageConfig {
231 fn default() -> Self {
232 Self {
233 name: "".into(),
234 path_suffixes: Default::default(),
235 brackets: Default::default(),
236 auto_indent_using_last_non_empty_line: auto_indent_using_last_non_empty_line_default(),
237 increase_indent_pattern: Default::default(),
238 decrease_indent_pattern: Default::default(),
239 autoclose_before: Default::default(),
240 line_comment: Default::default(),
241 }
242 }
243}
244
245fn auto_indent_using_last_non_empty_line_default() -> bool {
246 true
247}
248
249fn deserialize_regex<'de, D: Deserializer<'de>>(d: D) -> Result<Option<Regex>, D::Error> {
250 let source = Option::<String>::deserialize(d)?;
251 if let Some(source) = source {
252 Ok(Some(regex::Regex::new(&source).map_err(de::Error::custom)?))
253 } else {
254 Ok(None)
255 }
256}
257
258#[cfg(any(test, feature = "test-support"))]
259pub struct FakeLspAdapter {
260 pub name: &'static str,
261 pub capabilities: lsp::ServerCapabilities,
262 pub initializer: Option<Box<dyn 'static + Send + Sync + Fn(&mut lsp::FakeLanguageServer)>>,
263 pub disk_based_diagnostics_progress_token: Option<String>,
264 pub disk_based_diagnostics_sources: Vec<String>,
265}
266
267#[derive(Clone, Debug, Deserialize)]
268pub struct BracketPair {
269 pub start: String,
270 pub end: String,
271 pub close: bool,
272 pub newline: bool,
273}
274
275pub struct Language {
276 pub(crate) config: LanguageConfig,
277 pub(crate) grammar: Option<Arc<Grammar>>,
278 pub(crate) adapter: Option<Arc<CachedLspAdapter>>,
279
280 #[cfg(any(test, feature = "test-support"))]
281 fake_adapter: Option<(
282 mpsc::UnboundedSender<lsp::FakeLanguageServer>,
283 Arc<FakeLspAdapter>,
284 )>,
285}
286
287pub struct Grammar {
288 pub(crate) ts_language: tree_sitter::Language,
289 pub(crate) highlights_query: Option<Query>,
290 pub(crate) brackets_query: Option<Query>,
291 pub(crate) indents_query: Option<Query>,
292 pub(crate) outline_query: Option<Query>,
293 pub(crate) highlight_map: Mutex<HighlightMap>,
294}
295
296#[derive(Clone)]
297pub enum LanguageServerBinaryStatus {
298 CheckingForUpdate,
299 Downloading,
300 Downloaded,
301 Cached,
302 Failed { error: String },
303}
304
305pub struct LanguageRegistry {
306 languages: RwLock<Vec<Arc<Language>>>,
307 language_server_download_dir: Option<Arc<Path>>,
308 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
309 lsp_binary_statuses_rx: async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)>,
310 login_shell_env_loaded: Shared<Task<()>>,
311 #[allow(clippy::type_complexity)]
312 lsp_binary_paths: Mutex<
313 HashMap<
314 LanguageServerName,
315 Shared<BoxFuture<'static, Result<PathBuf, Arc<anyhow::Error>>>>,
316 >,
317 >,
318 subscription: RwLock<(watch::Sender<()>, watch::Receiver<()>)>,
319 theme: RwLock<Option<Arc<Theme>>>,
320}
321
322impl LanguageRegistry {
323 pub fn new(login_shell_env_loaded: Task<()>) -> Self {
324 let (lsp_binary_statuses_tx, lsp_binary_statuses_rx) = async_broadcast::broadcast(16);
325 Self {
326 language_server_download_dir: None,
327 languages: Default::default(),
328 lsp_binary_statuses_tx,
329 lsp_binary_statuses_rx,
330 login_shell_env_loaded: login_shell_env_loaded.shared(),
331 lsp_binary_paths: Default::default(),
332 subscription: RwLock::new(watch::channel()),
333 theme: Default::default(),
334 }
335 }
336
337 #[cfg(any(test, feature = "test-support"))]
338 pub fn test() -> Self {
339 Self::new(Task::ready(()))
340 }
341
342 pub fn add(&self, language: Arc<Language>) {
343 if let Some(theme) = self.theme.read().clone() {
344 language.set_theme(&theme.editor.syntax);
345 }
346 self.languages.write().push(language);
347 *self.subscription.write().0.borrow_mut() = ();
348 }
349
350 pub fn subscribe(&self) -> watch::Receiver<()> {
351 self.subscription.read().1.clone()
352 }
353
354 pub fn set_theme(&self, theme: Arc<Theme>) {
355 *self.theme.write() = Some(theme.clone());
356 for language in self.languages.read().iter() {
357 language.set_theme(&theme.editor.syntax);
358 }
359 }
360
361 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
362 self.language_server_download_dir = Some(path.into());
363 }
364
365 pub fn get_language(&self, name: &str) -> Option<Arc<Language>> {
366 self.languages
367 .read()
368 .iter()
369 .find(|language| language.name().to_lowercase() == name.to_lowercase())
370 .cloned()
371 }
372
373 pub fn to_vec(&self) -> Vec<Arc<Language>> {
374 self.languages.read().iter().cloned().collect()
375 }
376
377 pub fn language_names(&self) -> Vec<String> {
378 self.languages
379 .read()
380 .iter()
381 .map(|language| language.name().to_string())
382 .collect()
383 }
384
385 pub fn select_language(&self, path: impl AsRef<Path>) -> Option<Arc<Language>> {
386 let path = path.as_ref();
387 let filename = path.file_name().and_then(|name| name.to_str());
388 let extension = path.extension().and_then(|name| name.to_str());
389 let path_suffixes = [extension, filename];
390 self.languages
391 .read()
392 .iter()
393 .find(|language| {
394 language
395 .config
396 .path_suffixes
397 .iter()
398 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())))
399 })
400 .cloned()
401 }
402
403 pub fn start_language_server(
404 self: &Arc<Self>,
405 server_id: usize,
406 language: Arc<Language>,
407 root_path: Arc<Path>,
408 http_client: Arc<dyn HttpClient>,
409 cx: &mut MutableAppContext,
410 ) -> Option<Task<Result<lsp::LanguageServer>>> {
411 #[cfg(any(test, feature = "test-support"))]
412 if language.fake_adapter.is_some() {
413 let language = language;
414 return Some(cx.spawn(|cx| async move {
415 let (servers_tx, fake_adapter) = language.fake_adapter.as_ref().unwrap();
416 let (server, mut fake_server) = lsp::LanguageServer::fake(
417 fake_adapter.name.to_string(),
418 fake_adapter.capabilities.clone(),
419 cx.clone(),
420 );
421
422 if let Some(initializer) = &fake_adapter.initializer {
423 initializer(&mut fake_server);
424 }
425
426 let servers_tx = servers_tx.clone();
427 cx.background()
428 .spawn(async move {
429 if fake_server
430 .try_receive_notification::<lsp::notification::Initialized>()
431 .await
432 .is_some()
433 {
434 servers_tx.unbounded_send(fake_server).ok();
435 }
436 })
437 .detach();
438 Ok(server)
439 }));
440 }
441
442 let download_dir = self
443 .language_server_download_dir
444 .clone()
445 .ok_or_else(|| anyhow!("language server download directory has not been assigned"))
446 .log_err()?;
447
448 let this = self.clone();
449 let adapter = language.adapter.clone()?;
450 let lsp_binary_statuses = self.lsp_binary_statuses_tx.clone();
451 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
452 Some(cx.spawn(|cx| async move {
453 login_shell_env_loaded.await;
454 let server_binary_path = this
455 .lsp_binary_paths
456 .lock()
457 .entry(adapter.name.clone())
458 .or_insert_with(|| {
459 get_server_binary_path(
460 adapter.clone(),
461 language.clone(),
462 http_client,
463 download_dir,
464 lsp_binary_statuses,
465 )
466 .map_err(Arc::new)
467 .boxed()
468 .shared()
469 })
470 .clone()
471 .map_err(|e| anyhow!(e));
472
473 let server_binary_path = server_binary_path.await?;
474 let server_args = &adapter.server_args;
475 let server = lsp::LanguageServer::new(
476 server_id,
477 &server_binary_path,
478 server_args,
479 &root_path,
480 cx,
481 )?;
482 Ok(server)
483 }))
484 }
485
486 pub fn language_server_binary_statuses(
487 &self,
488 ) -> async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)> {
489 self.lsp_binary_statuses_rx.clone()
490 }
491}
492
493async fn get_server_binary_path(
494 adapter: Arc<CachedLspAdapter>,
495 language: Arc<Language>,
496 http_client: Arc<dyn HttpClient>,
497 download_dir: Arc<Path>,
498 statuses: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
499) -> Result<PathBuf> {
500 let container_dir = download_dir.join(adapter.name.0.as_ref());
501 if !container_dir.exists() {
502 smol::fs::create_dir_all(&container_dir)
503 .await
504 .context("failed to create container directory")?;
505 }
506
507 let path = fetch_latest_server_binary_path(
508 adapter.clone(),
509 language.clone(),
510 http_client,
511 &container_dir,
512 statuses.clone(),
513 )
514 .await;
515 if let Err(error) = path.as_ref() {
516 if let Some(cached_path) = adapter.cached_server_binary(container_dir).await {
517 statuses
518 .broadcast((language.clone(), LanguageServerBinaryStatus::Cached))
519 .await?;
520 return Ok(cached_path);
521 } else {
522 statuses
523 .broadcast((
524 language.clone(),
525 LanguageServerBinaryStatus::Failed {
526 error: format!("{:?}", error),
527 },
528 ))
529 .await?;
530 }
531 }
532 path
533}
534
535async fn fetch_latest_server_binary_path(
536 adapter: Arc<CachedLspAdapter>,
537 language: Arc<Language>,
538 http_client: Arc<dyn HttpClient>,
539 container_dir: &Path,
540 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
541) -> Result<PathBuf> {
542 let container_dir: Arc<Path> = container_dir.into();
543 lsp_binary_statuses_tx
544 .broadcast((
545 language.clone(),
546 LanguageServerBinaryStatus::CheckingForUpdate,
547 ))
548 .await?;
549 let version_info = adapter
550 .fetch_latest_server_version(http_client.clone())
551 .await?;
552 lsp_binary_statuses_tx
553 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloading))
554 .await?;
555 let path = adapter
556 .fetch_server_binary(version_info, http_client, container_dir.to_path_buf())
557 .await?;
558 lsp_binary_statuses_tx
559 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloaded))
560 .await?;
561 Ok(path)
562}
563
564impl Language {
565 pub fn new(config: LanguageConfig, ts_language: Option<tree_sitter::Language>) -> Self {
566 Self {
567 config,
568 grammar: ts_language.map(|ts_language| {
569 Arc::new(Grammar {
570 highlights_query: None,
571 brackets_query: None,
572 indents_query: None,
573 outline_query: None,
574 ts_language,
575 highlight_map: Default::default(),
576 })
577 }),
578 adapter: None,
579
580 #[cfg(any(test, feature = "test-support"))]
581 fake_adapter: None,
582 }
583 }
584
585 pub fn lsp_adapter(&self) -> Option<Arc<CachedLspAdapter>> {
586 self.adapter.clone()
587 }
588
589 pub fn with_highlights_query(mut self, source: &str) -> Result<Self> {
590 let grammar = self.grammar_mut();
591 grammar.highlights_query = Some(Query::new(grammar.ts_language, source)?);
592 Ok(self)
593 }
594
595 pub fn with_brackets_query(mut self, source: &str) -> Result<Self> {
596 let grammar = self.grammar_mut();
597 grammar.brackets_query = Some(Query::new(grammar.ts_language, source)?);
598 Ok(self)
599 }
600
601 pub fn with_indents_query(mut self, source: &str) -> Result<Self> {
602 let grammar = self.grammar_mut();
603 grammar.indents_query = Some(Query::new(grammar.ts_language, source)?);
604 Ok(self)
605 }
606
607 pub fn with_outline_query(mut self, source: &str) -> Result<Self> {
608 let grammar = self.grammar_mut();
609 grammar.outline_query = Some(Query::new(grammar.ts_language, source)?);
610 Ok(self)
611 }
612
613 fn grammar_mut(&mut self) -> &mut Grammar {
614 Arc::get_mut(self.grammar.as_mut().unwrap()).unwrap()
615 }
616
617 pub fn with_lsp_adapter(mut self, lsp_adapter: Arc<CachedLspAdapter>) -> Self {
618 self.adapter = Some(lsp_adapter);
619 self
620 }
621
622 #[cfg(any(test, feature = "test-support"))]
623 pub async fn set_fake_lsp_adapter(
624 &mut self,
625 fake_lsp_adapter: Arc<FakeLspAdapter>,
626 ) -> mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
627 let (servers_tx, servers_rx) = mpsc::unbounded();
628 self.fake_adapter = Some((servers_tx, fake_lsp_adapter.clone()));
629 let adapter = CachedLspAdapter::new(fake_lsp_adapter).await;
630 self.adapter = Some(adapter);
631 servers_rx
632 }
633
634 pub fn name(&self) -> Arc<str> {
635 self.config.name.clone()
636 }
637
638 pub fn line_comment_prefix(&self) -> Option<&str> {
639 self.config.line_comment.as_deref()
640 }
641
642 pub async fn disk_based_diagnostic_sources(&self) -> &[String] {
643 match self.adapter.as_ref() {
644 Some(adapter) => &adapter.disk_based_diagnostic_sources,
645 None => &[],
646 }
647 }
648
649 pub async fn disk_based_diagnostics_progress_token(&self) -> Option<&str> {
650 if let Some(adapter) = self.adapter.as_ref() {
651 adapter.disk_based_diagnostics_progress_token.as_deref()
652 } else {
653 None
654 }
655 }
656
657 pub async fn process_diagnostics(&self, diagnostics: &mut lsp::PublishDiagnosticsParams) {
658 if let Some(processor) = self.adapter.as_ref() {
659 processor.process_diagnostics(diagnostics).await;
660 }
661 }
662
663 pub async fn label_for_completion(
664 &self,
665 completion: &lsp::CompletionItem,
666 ) -> Option<CodeLabel> {
667 self.adapter
668 .as_ref()?
669 .label_for_completion(completion, self)
670 .await
671 }
672
673 pub async fn label_for_symbol(&self, name: &str, kind: lsp::SymbolKind) -> Option<CodeLabel> {
674 self.adapter
675 .as_ref()?
676 .label_for_symbol(name, kind, self)
677 .await
678 }
679
680 pub fn highlight_text<'a>(
681 &'a self,
682 text: &'a Rope,
683 range: Range<usize>,
684 ) -> Vec<(Range<usize>, HighlightId)> {
685 let mut result = Vec::new();
686 if let Some(grammar) = &self.grammar {
687 let tree = grammar.parse_text(text, None);
688 let mut offset = 0;
689 for chunk in BufferChunks::new(text, range, Some(&tree), self.grammar.as_ref(), vec![])
690 {
691 let end_offset = offset + chunk.text.len();
692 if let Some(highlight_id) = chunk.syntax_highlight_id {
693 if !highlight_id.is_default() {
694 result.push((offset..end_offset, highlight_id));
695 }
696 }
697 offset = end_offset;
698 }
699 }
700 result
701 }
702
703 pub fn brackets(&self) -> &[BracketPair] {
704 &self.config.brackets
705 }
706
707 pub fn path_suffixes(&self) -> &[String] {
708 &self.config.path_suffixes
709 }
710
711 pub fn should_autoclose_before(&self, c: char) -> bool {
712 c.is_whitespace() || self.config.autoclose_before.contains(c)
713 }
714
715 pub fn set_theme(&self, theme: &SyntaxTheme) {
716 if let Some(grammar) = self.grammar.as_ref() {
717 if let Some(highlights_query) = &grammar.highlights_query {
718 *grammar.highlight_map.lock() =
719 HighlightMap::new(highlights_query.capture_names(), theme);
720 }
721 }
722 }
723
724 pub fn grammar(&self) -> Option<&Arc<Grammar>> {
725 self.grammar.as_ref()
726 }
727}
728
729impl Grammar {
730 fn parse_text(&self, text: &Rope, old_tree: Option<Tree>) -> Tree {
731 PARSER.with(|parser| {
732 let mut parser = parser.borrow_mut();
733 parser
734 .set_language(self.ts_language)
735 .expect("incompatible grammar");
736 let mut chunks = text.chunks_in_range(0..text.len());
737 parser
738 .parse_with(
739 &mut move |offset, _| {
740 chunks.seek(offset);
741 chunks.next().unwrap_or("").as_bytes()
742 },
743 old_tree.as_ref(),
744 )
745 .unwrap()
746 })
747 }
748
749 pub fn highlight_map(&self) -> HighlightMap {
750 self.highlight_map.lock().clone()
751 }
752
753 pub fn highlight_id_for_name(&self, name: &str) -> Option<HighlightId> {
754 let capture_id = self
755 .highlights_query
756 .as_ref()?
757 .capture_index_for_name(name)?;
758 Some(self.highlight_map.lock().get(capture_id))
759 }
760}
761
762impl CodeLabel {
763 pub fn plain(text: String, filter_text: Option<&str>) -> Self {
764 let mut result = Self {
765 runs: Vec::new(),
766 filter_range: 0..text.len(),
767 text,
768 };
769 if let Some(filter_text) = filter_text {
770 if let Some(ix) = result.text.find(filter_text) {
771 result.filter_range = ix..ix + filter_text.len();
772 }
773 }
774 result
775 }
776}
777
778#[cfg(any(test, feature = "test-support"))]
779impl Default for FakeLspAdapter {
780 fn default() -> Self {
781 Self {
782 name: "the-fake-language-server",
783 capabilities: lsp::LanguageServer::full_capabilities(),
784 initializer: None,
785 disk_based_diagnostics_progress_token: None,
786 disk_based_diagnostics_sources: Vec::new(),
787 }
788 }
789}
790
791#[cfg(any(test, feature = "test-support"))]
792#[async_trait]
793impl LspAdapter for Arc<FakeLspAdapter> {
794 async fn name(&self) -> LanguageServerName {
795 LanguageServerName(self.name.into())
796 }
797
798 async fn fetch_latest_server_version(
799 &self,
800 _: Arc<dyn HttpClient>,
801 ) -> Result<Box<dyn 'static + Send + Any>> {
802 unreachable!();
803 }
804
805 async fn fetch_server_binary(
806 &self,
807 _: Box<dyn 'static + Send + Any>,
808 _: Arc<dyn HttpClient>,
809 _: PathBuf,
810 ) -> Result<PathBuf> {
811 unreachable!();
812 }
813
814 async fn cached_server_binary(&self, _: PathBuf) -> Option<PathBuf> {
815 unreachable!();
816 }
817
818 async fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
819
820 async fn disk_based_diagnostic_sources(&self) -> Vec<String> {
821 self.disk_based_diagnostics_sources.clone()
822 }
823
824 async fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
825 self.disk_based_diagnostics_progress_token.clone()
826 }
827}
828
829pub fn point_to_lsp(point: PointUtf16) -> lsp::Position {
830 lsp::Position::new(point.row, point.column)
831}
832
833pub fn point_from_lsp(point: lsp::Position) -> PointUtf16 {
834 PointUtf16::new(point.line, point.character)
835}
836
837pub fn range_to_lsp(range: Range<PointUtf16>) -> lsp::Range {
838 lsp::Range {
839 start: point_to_lsp(range.start),
840 end: point_to_lsp(range.end),
841 }
842}
843
844pub fn range_from_lsp(range: lsp::Range) -> Range<PointUtf16> {
845 let mut start = point_from_lsp(range.start);
846 let mut end = point_from_lsp(range.end);
847 if start > end {
848 mem::swap(&mut start, &mut end);
849 }
850 start..end
851}