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