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