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