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::{AsyncAppContext, 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;
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 [`LspAdapterTrait`] under the hood, but calls all 'static' methods
70/// once at startup, and caches the results.
71pub struct LspAdapter {
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 id_for_language: Option<String>,
78 pub adapter: Box<dyn LspAdapterTrait>,
79}
80
81impl LspAdapter {
82 pub async fn new<T: LspAdapterTrait>(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 id_for_language = adapter.id_for_language(name.0.as_ref()).await;
91
92 Arc::new(LspAdapter {
93 name,
94 server_args,
95 initialization_options,
96 disk_based_diagnostic_sources,
97 disk_based_diagnostics_progress_token,
98 id_for_language,
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 LspAdapterTrait: '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 id_for_language(&self, _name: &str) -> Option<String> {
203 None
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"))]
259// pub type FakeLspAdapter = Arc<FakeLspAdapterInner>;
260
261#[cfg(any(test, feature = "test-support"))]
262pub struct FakeLspAdapter {
263 pub name: &'static str,
264 pub capabilities: lsp::ServerCapabilities,
265 pub initializer: Option<Box<dyn 'static + Send + Sync + Fn(&mut lsp::FakeLanguageServer)>>,
266 pub disk_based_diagnostics_progress_token: Option<String>,
267 pub disk_based_diagnostics_sources: Vec<String>,
268}
269
270#[derive(Clone, Debug, Deserialize)]
271pub struct BracketPair {
272 pub start: String,
273 pub end: String,
274 pub close: bool,
275 pub newline: bool,
276}
277
278pub struct Language {
279 pub(crate) config: LanguageConfig,
280 pub(crate) grammar: Option<Arc<Grammar>>,
281 pub(crate) adapter: Option<Arc<LspAdapter>>,
282 pub(crate) theme: RwLock<Option<Arc<SyntaxTheme>>>,
283
284 #[cfg(any(test, feature = "test-support"))]
285 fake_adapter: Option<(
286 mpsc::UnboundedSender<lsp::FakeLanguageServer>,
287 Arc<FakeLspAdapter>,
288 )>,
289}
290
291pub struct Grammar {
292 pub(crate) ts_language: tree_sitter::Language,
293 pub(crate) highlights_query: Option<Query>,
294 pub(crate) brackets_query: Option<Query>,
295 pub(crate) indents_query: Option<Query>,
296 pub(crate) outline_query: Option<Query>,
297 pub(crate) highlight_map: Mutex<HighlightMap>,
298}
299
300#[derive(Clone)]
301pub enum LanguageServerBinaryStatus {
302 CheckingForUpdate,
303 Downloading,
304 Downloaded,
305 Cached,
306 Failed { error: String },
307}
308
309pub struct LanguageRegistry {
310 languages: RwLock<Vec<Arc<Language>>>,
311 language_server_download_dir: Option<Arc<Path>>,
312 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
313 lsp_binary_statuses_rx: async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)>,
314 login_shell_env_loaded: Shared<Task<()>>,
315 lsp_binary_paths: Mutex<
316 HashMap<
317 LanguageServerName,
318 Shared<BoxFuture<'static, Result<PathBuf, Arc<anyhow::Error>>>>,
319 >,
320 >,
321 subscription: RwLock<(watch::Sender<()>, watch::Receiver<()>)>,
322 theme: RwLock<Option<Arc<SyntaxTheme>>>,
323}
324
325impl LanguageRegistry {
326 pub fn new(login_shell_env_loaded: Task<()>) -> Self {
327 let (lsp_binary_statuses_tx, lsp_binary_statuses_rx) = async_broadcast::broadcast(16);
328 Self {
329 language_server_download_dir: None,
330 languages: Default::default(),
331 lsp_binary_statuses_tx,
332 lsp_binary_statuses_rx,
333 login_shell_env_loaded: login_shell_env_loaded.shared(),
334 lsp_binary_paths: Default::default(),
335 subscription: RwLock::new(watch::channel()),
336 theme: Default::default(),
337 }
338 }
339
340 #[cfg(any(test, feature = "test-support"))]
341 pub fn test() -> Self {
342 Self::new(Task::ready(()))
343 }
344
345 pub fn add(&self, language: Arc<Language>) {
346 if let Some(theme) = self.theme.read().clone() {
347 language.set_theme(theme);
348 }
349 self.languages.write().push(language.clone());
350 *self.subscription.write().0.borrow_mut() = ();
351 }
352
353 pub fn subscribe(&self) -> watch::Receiver<()> {
354 self.subscription.read().1.clone()
355 }
356
357 pub fn set_theme(&self, theme: Arc<SyntaxTheme>) {
358 *self.theme.write() = Some(theme.clone());
359 for language in self.languages.read().iter() {
360 language.set_theme(theme.clone());
361 }
362 }
363
364 pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
365 self.language_server_download_dir = Some(path.into());
366 }
367
368 pub fn get_language(&self, name: &str) -> Option<Arc<Language>> {
369 self.languages
370 .read()
371 .iter()
372 .find(|language| language.name().to_lowercase() == name.to_lowercase())
373 .cloned()
374 }
375
376 pub fn to_vec(&self) -> Vec<Arc<Language>> {
377 self.languages.read().iter().cloned().collect()
378 }
379
380 pub fn language_names(&self) -> Vec<String> {
381 self.languages
382 .read()
383 .iter()
384 .map(|language| language.name().to_string())
385 .collect()
386 }
387
388 pub fn select_language(&self, path: impl AsRef<Path>) -> Option<Arc<Language>> {
389 let path = path.as_ref();
390 let filename = path.file_name().and_then(|name| name.to_str());
391 let extension = path.extension().and_then(|name| name.to_str());
392 let path_suffixes = [extension, filename];
393 self.languages
394 .read()
395 .iter()
396 .find(|language| {
397 language
398 .config
399 .path_suffixes
400 .iter()
401 .any(|suffix| path_suffixes.contains(&Some(suffix.as_str())))
402 })
403 .cloned()
404 }
405
406 pub fn start_language_server(
407 self: &Arc<Self>,
408 server_id: usize,
409 language: Arc<Language>,
410 root_path: Arc<Path>,
411 http_client: Arc<dyn HttpClient>,
412 cx: &mut MutableAppContext,
413 ) -> Option<Task<Result<lsp::LanguageServer>>> {
414 #[cfg(any(test, feature = "test-support"))]
415 if language.fake_adapter.is_some() {
416 let language = language.clone();
417 return Some(cx.spawn(|cx| async move {
418 let (servers_tx, fake_adapter) = language.fake_adapter.as_ref().unwrap();
419 let (server, mut fake_server) = lsp::LanguageServer::fake(
420 fake_adapter.name.to_string(),
421 fake_adapter.capabilities.clone(),
422 cx.clone(),
423 );
424
425 if let Some(initializer) = &fake_adapter.initializer {
426 initializer(&mut fake_server);
427 }
428
429 let servers_tx = servers_tx.clone();
430 cx.background()
431 .spawn(async move {
432 if fake_server
433 .try_receive_notification::<lsp::notification::Initialized>()
434 .await
435 .is_some()
436 {
437 servers_tx.unbounded_send(fake_server).ok();
438 }
439 })
440 .detach();
441 Ok(server)
442 }));
443 }
444
445 let download_dir = self
446 .language_server_download_dir
447 .clone()
448 .ok_or_else(|| anyhow!("language server download directory has not been assigned"))
449 .log_err()?;
450
451 let this = self.clone();
452 let adapter = language.adapter.clone()?;
453 let lsp_binary_statuses = self.lsp_binary_statuses_tx.clone();
454 let login_shell_env_loaded = self.login_shell_env_loaded.clone();
455 Some(cx.spawn(|cx| async move {
456 login_shell_env_loaded.await;
457 let server_binary_path = this
458 .lsp_binary_paths
459 .lock()
460 .entry(adapter.name.clone())
461 .or_insert_with(|| {
462 get_server_binary_path(
463 adapter.clone(),
464 language.clone(),
465 http_client,
466 download_dir,
467 lsp_binary_statuses,
468 )
469 .map_err(Arc::new)
470 .boxed()
471 .shared()
472 })
473 .clone()
474 .map_err(|e| anyhow!(e));
475
476 let server_binary_path = server_binary_path.await?;
477 let server_args = &adapter.server_args;
478 let server = lsp::LanguageServer::new(
479 server_id,
480 &server_binary_path,
481 &server_args,
482 &root_path,
483 cx,
484 )?;
485 Ok(server)
486 }))
487 }
488
489 pub fn language_server_binary_statuses(
490 &self,
491 ) -> async_broadcast::Receiver<(Arc<Language>, LanguageServerBinaryStatus)> {
492 self.lsp_binary_statuses_rx.clone()
493 }
494}
495
496async fn get_server_binary_path(
497 adapter: Arc<LspAdapter>,
498 language: Arc<Language>,
499 http_client: Arc<dyn HttpClient>,
500 download_dir: Arc<Path>,
501 statuses: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
502) -> Result<PathBuf> {
503 let container_dir = download_dir.join(adapter.name.0.as_ref());
504 if !container_dir.exists() {
505 smol::fs::create_dir_all(&container_dir)
506 .await
507 .context("failed to create container directory")?;
508 }
509
510 let path = fetch_latest_server_binary_path(
511 adapter.clone(),
512 language.clone(),
513 http_client,
514 &container_dir,
515 statuses.clone(),
516 )
517 .await;
518 if let Err(error) = path.as_ref() {
519 if let Some(cached_path) = adapter.cached_server_binary(container_dir).await {
520 statuses
521 .broadcast((language.clone(), LanguageServerBinaryStatus::Cached))
522 .await?;
523 return Ok(cached_path);
524 } else {
525 statuses
526 .broadcast((
527 language.clone(),
528 LanguageServerBinaryStatus::Failed {
529 error: format!("{:?}", error),
530 },
531 ))
532 .await?;
533 }
534 }
535 path
536}
537
538async fn fetch_latest_server_binary_path(
539 adapter: Arc<LspAdapter>,
540 language: Arc<Language>,
541 http_client: Arc<dyn HttpClient>,
542 container_dir: &Path,
543 lsp_binary_statuses_tx: async_broadcast::Sender<(Arc<Language>, LanguageServerBinaryStatus)>,
544) -> Result<PathBuf> {
545 let container_dir: Arc<Path> = container_dir.into();
546 lsp_binary_statuses_tx
547 .broadcast((
548 language.clone(),
549 LanguageServerBinaryStatus::CheckingForUpdate,
550 ))
551 .await?;
552 let version_info = adapter
553 .fetch_latest_server_version(http_client.clone())
554 .await?;
555 lsp_binary_statuses_tx
556 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloading))
557 .await?;
558 let path = adapter
559 .fetch_server_binary(version_info, http_client, container_dir.to_path_buf())
560 .await?;
561 lsp_binary_statuses_tx
562 .broadcast((language.clone(), LanguageServerBinaryStatus::Downloaded))
563 .await?;
564 Ok(path)
565}
566
567impl Language {
568 pub fn new(config: LanguageConfig, ts_language: Option<tree_sitter::Language>) -> Self {
569 Self {
570 config,
571 grammar: ts_language.map(|ts_language| {
572 Arc::new(Grammar {
573 highlights_query: None,
574 brackets_query: None,
575 indents_query: None,
576 outline_query: None,
577 ts_language,
578 highlight_map: Default::default(),
579 })
580 }),
581 adapter: None,
582 theme: Default::default(),
583
584 #[cfg(any(test, feature = "test-support"))]
585 fake_adapter: None,
586 }
587 }
588
589 pub fn lsp_adapter(&self) -> Option<Arc<LspAdapter>> {
590 self.adapter.clone()
591 }
592
593 pub fn with_highlights_query(mut self, source: &str) -> Result<Self> {
594 let grammar = self.grammar_mut();
595 grammar.highlights_query = Some(Query::new(grammar.ts_language, source)?);
596 Ok(self)
597 }
598
599 pub fn with_brackets_query(mut self, source: &str) -> Result<Self> {
600 let grammar = self.grammar_mut();
601 grammar.brackets_query = Some(Query::new(grammar.ts_language, source)?);
602 Ok(self)
603 }
604
605 pub fn with_indents_query(mut self, source: &str) -> Result<Self> {
606 let grammar = self.grammar_mut();
607 grammar.indents_query = Some(Query::new(grammar.ts_language, source)?);
608 Ok(self)
609 }
610
611 pub fn with_outline_query(mut self, source: &str) -> Result<Self> {
612 let grammar = self.grammar_mut();
613 grammar.outline_query = Some(Query::new(grammar.ts_language, source)?);
614 Ok(self)
615 }
616
617 fn grammar_mut(&mut self) -> &mut Grammar {
618 Arc::get_mut(self.grammar.as_mut().unwrap()).unwrap()
619 }
620
621 pub fn with_lsp_adapter(mut self, lsp_adapter: Arc<LspAdapter>) -> Self {
622 self.adapter = Some(lsp_adapter);
623 self
624 }
625
626 #[cfg(any(test, feature = "test-support"))]
627 pub fn set_fake_lsp_adapter(
628 &mut self,
629 fake_lsp_adapter: Arc<FakeLspAdapter>,
630 ) -> mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
631 let (servers_tx, servers_rx) = mpsc::unbounded();
632 self.fake_adapter = Some((servers_tx, fake_lsp_adapter.clone()));
633 let adapter = smol::block_on(LspAdapter::new(fake_lsp_adapter));
634 self.adapter = Some(adapter);
635 servers_rx
636 }
637
638 pub fn name(&self) -> Arc<str> {
639 self.config.name.clone()
640 }
641
642 pub fn line_comment_prefix(&self) -> Option<&str> {
643 self.config.line_comment.as_deref()
644 }
645
646 pub async fn disk_based_diagnostic_sources(&self) -> &[String] {
647 match self.adapter.as_ref() {
648 Some(adapter) => &adapter.disk_based_diagnostic_sources,
649 None => &[],
650 }
651 }
652
653 pub async fn disk_based_diagnostics_progress_token(&self) -> Option<&str> {
654 if let Some(adapter) = self.adapter.as_ref() {
655 adapter.disk_based_diagnostics_progress_token.as_deref()
656 } else {
657 None
658 }
659 }
660
661 pub async fn process_diagnostics(&self, diagnostics: &mut lsp::PublishDiagnosticsParams) {
662 if let Some(processor) = self.adapter.as_ref() {
663 processor.process_diagnostics(diagnostics).await;
664 }
665 }
666
667 pub async fn label_for_completion(
668 &self,
669 completion: &lsp::CompletionItem,
670 ) -> Option<CodeLabel> {
671 self.adapter
672 .as_ref()?
673 .label_for_completion(completion, self)
674 .await
675 }
676
677 pub async fn label_for_symbol(&self, name: &str, kind: lsp::SymbolKind) -> Option<CodeLabel> {
678 self.adapter
679 .as_ref()?
680 .label_for_symbol(name, kind, self)
681 .await
682 }
683
684 pub fn highlight_text<'a>(
685 &'a self,
686 text: &'a Rope,
687 range: Range<usize>,
688 ) -> Vec<(Range<usize>, HighlightId)> {
689 let mut result = Vec::new();
690 if let Some(grammar) = &self.grammar {
691 let tree = grammar.parse_text(text, None);
692 let mut offset = 0;
693 for chunk in BufferChunks::new(text, range, Some(&tree), self.grammar.as_ref(), vec![])
694 {
695 let end_offset = offset + chunk.text.len();
696 if let Some(highlight_id) = chunk.syntax_highlight_id {
697 if !highlight_id.is_default() {
698 result.push((offset..end_offset, highlight_id));
699 }
700 }
701 offset = end_offset;
702 }
703 }
704 result
705 }
706
707 pub fn brackets(&self) -> &[BracketPair] {
708 &self.config.brackets
709 }
710
711 pub fn path_suffixes(&self) -> &[String] {
712 &self.config.path_suffixes
713 }
714
715 pub fn should_autoclose_before(&self, c: char) -> bool {
716 c.is_whitespace() || self.config.autoclose_before.contains(c)
717 }
718
719 /// Sets the theme to the given theme, and then calls [`highlight`].
720 pub fn set_theme(&self, theme: Arc<SyntaxTheme>) {
721 *self.theme.write() = Some(theme.clone());
722 self.highlight()
723 }
724
725 /// Highlights the grammar according to the current theme,
726 /// if one has been set using [`set_theme`].
727 pub fn highlight(&self) {
728 if let Some(grammar) = self.grammar.as_ref() {
729 if let Some(highlights_query) = &grammar.highlights_query {
730 if let Some(theme) = self.theme.read().as_ref() {
731 *grammar.highlight_map.lock() =
732 HighlightMap::new(highlights_query.capture_names(), &theme);
733 }
734 }
735 }
736 }
737
738 pub fn grammar(&self) -> Option<&Arc<Grammar>> {
739 self.grammar.as_ref()
740 }
741}
742
743impl Grammar {
744 fn parse_text(&self, text: &Rope, old_tree: Option<Tree>) -> Tree {
745 PARSER.with(|parser| {
746 let mut parser = parser.borrow_mut();
747 parser
748 .set_language(self.ts_language)
749 .expect("incompatible grammar");
750 let mut chunks = text.chunks_in_range(0..text.len());
751 parser
752 .parse_with(
753 &mut move |offset, _| {
754 chunks.seek(offset);
755 chunks.next().unwrap_or("").as_bytes()
756 },
757 old_tree.as_ref(),
758 )
759 .unwrap()
760 })
761 }
762
763 pub fn highlight_map(&self) -> HighlightMap {
764 self.highlight_map.lock().clone()
765 }
766
767 pub fn highlight_id_for_name(&self, name: &str) -> Option<HighlightId> {
768 let capture_id = self
769 .highlights_query
770 .as_ref()?
771 .capture_index_for_name(name)?;
772 Some(self.highlight_map.lock().get(capture_id))
773 }
774}
775
776impl CodeLabel {
777 pub fn plain(text: String, filter_text: Option<&str>) -> Self {
778 let mut result = Self {
779 runs: Vec::new(),
780 filter_range: 0..text.len(),
781 text,
782 };
783 if let Some(filter_text) = filter_text {
784 if let Some(ix) = result.text.find(filter_text) {
785 result.filter_range = ix..ix + filter_text.len();
786 }
787 }
788 result
789 }
790}
791
792#[cfg(any(test, feature = "test-support"))]
793impl Default for FakeLspAdapter {
794 fn default() -> Self {
795 Self {
796 name: "the-fake-language-server",
797 capabilities: lsp::LanguageServer::full_capabilities(),
798 initializer: None,
799 disk_based_diagnostics_progress_token: None,
800 disk_based_diagnostics_sources: Vec::new(),
801 }
802 }
803}
804
805#[cfg(any(test, feature = "test-support"))]
806#[async_trait]
807impl LspAdapterTrait for Arc<FakeLspAdapter> {
808 async fn name(&self) -> LanguageServerName {
809 LanguageServerName(self.name.into())
810 }
811
812 async fn fetch_latest_server_version(
813 &self,
814 _: Arc<dyn HttpClient>,
815 ) -> Result<Box<dyn 'static + Send + Any>> {
816 unreachable!();
817 }
818
819 async fn fetch_server_binary(
820 &self,
821 _: Box<dyn 'static + Send + Any>,
822 _: Arc<dyn HttpClient>,
823 _: PathBuf,
824 ) -> Result<PathBuf> {
825 unreachable!();
826 }
827
828 async fn cached_server_binary(&self, _: PathBuf) -> Option<PathBuf> {
829 unreachable!();
830 }
831
832 async fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
833
834 async fn disk_based_diagnostic_sources(&self) -> Vec<String> {
835 self.disk_based_diagnostics_sources.clone()
836 }
837
838 async fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
839 self.disk_based_diagnostics_progress_token.clone()
840 }
841}
842
843pub fn point_to_lsp(point: PointUtf16) -> lsp::Position {
844 lsp::Position::new(point.row, point.column)
845}
846
847pub fn point_from_lsp(point: lsp::Position) -> PointUtf16 {
848 PointUtf16::new(point.line, point.character)
849}
850
851pub fn range_to_lsp(range: Range<PointUtf16>) -> lsp::Range {
852 lsp::Range {
853 start: point_to_lsp(range.start),
854 end: point_to_lsp(range.end),
855 }
856}
857
858pub fn range_from_lsp(range: lsp::Range) -> Range<PointUtf16> {
859 let mut start = point_from_lsp(range.start);
860 let mut end = point_from_lsp(range.end);
861 if start > end {
862 mem::swap(&mut start, &mut end);
863 }
864 start..end
865}