1mod db;
2pub mod fs;
3mod ignore;
4mod lsp_command;
5pub mod search;
6pub mod worktree;
7
8#[cfg(test)]
9mod project_tests;
10
11use anyhow::{anyhow, Context, Result};
12use client::{proto, Client, PeerId, TypedEnvelope, User, UserStore};
13use clock::ReplicaId;
14use collections::{hash_map, BTreeMap, HashMap, HashSet};
15use futures::{future::Shared, AsyncWriteExt, Future, FutureExt, SinkExt, StreamExt, TryFutureExt};
16use fuzzy::{PathMatch, PathMatchCandidate, PathMatchCandidateSet};
17use gpui::{
18 AnyModelHandle, AppContext, AsyncAppContext, Entity, ModelContext, ModelHandle,
19 MutableAppContext, Task, UpgradeModelHandle, WeakModelHandle,
20};
21use language::{
22 point_to_lsp,
23 proto::{
24 deserialize_anchor, deserialize_line_ending, deserialize_version, serialize_anchor,
25 serialize_version,
26 },
27 range_from_lsp, range_to_lsp, Anchor, Bias, Buffer, CharKind, CodeAction, CodeLabel,
28 Completion, Diagnostic, DiagnosticEntry, DiagnosticSet, Event as BufferEvent, File as _,
29 Language, LanguageRegistry, LanguageServerName, LineEnding, LocalFile, LspAdapter,
30 OffsetRangeExt, Operation, Patch, PointUtf16, TextBufferSnapshot, ToOffset, ToPointUtf16,
31 Transaction,
32};
33use lsp::{
34 DiagnosticSeverity, DiagnosticTag, DocumentHighlightKind, LanguageServer, LanguageString,
35 MarkedString,
36};
37use lsp_command::*;
38use parking_lot::Mutex;
39use postage::stream::Stream;
40use postage::watch;
41use rand::prelude::*;
42use search::SearchQuery;
43use serde::Serialize;
44use settings::Settings;
45use sha2::{Digest, Sha256};
46use similar::{ChangeTag, TextDiff};
47use std::{
48 cell::RefCell,
49 cmp::{self, Ordering},
50 convert::TryInto,
51 ffi::OsString,
52 hash::Hash,
53 mem,
54 num::NonZeroU32,
55 ops::Range,
56 os::unix::{ffi::OsStrExt, prelude::OsStringExt},
57 path::{Component, Path, PathBuf},
58 rc::Rc,
59 str,
60 sync::{
61 atomic::{AtomicBool, AtomicUsize, Ordering::SeqCst},
62 Arc,
63 },
64 time::Instant,
65};
66use thiserror::Error;
67use util::{post_inc, ResultExt, TryFutureExt as _};
68
69pub use db::Db;
70pub use fs::*;
71pub use worktree::*;
72
73pub trait Item: Entity {
74 fn entry_id(&self, cx: &AppContext) -> Option<ProjectEntryId>;
75}
76
77pub struct ProjectStore {
78 db: Arc<Db>,
79 projects: Vec<WeakModelHandle<Project>>,
80}
81
82// Language server state is stored across 3 collections:
83// language_servers =>
84// a mapping from unique server id to LanguageServerState which can either be a task for a
85// server in the process of starting, or a running server with adapter and language server arcs
86// language_server_ids => a mapping from worktreeId and server name to the unique server id
87// language_server_statuses => a mapping from unique server id to the current server status
88//
89// Multiple worktrees can map to the same language server for example when you jump to the definition
90// of a file in the standard library. So language_server_ids is used to look up which server is active
91// for a given worktree and language server name
92//
93// When starting a language server, first the id map is checked to make sure a server isn't already available
94// for that worktree. If there is one, it finishes early. Otherwise, a new id is allocated and and
95// the Starting variant of LanguageServerState is stored in the language_servers map.
96pub struct Project {
97 worktrees: Vec<WorktreeHandle>,
98 active_entry: Option<ProjectEntryId>,
99 languages: Arc<LanguageRegistry>,
100 language_servers: HashMap<usize, LanguageServerState>,
101 language_server_ids: HashMap<(WorktreeId, LanguageServerName), usize>,
102 language_server_statuses: BTreeMap<usize, LanguageServerStatus>,
103 language_server_settings: Arc<Mutex<serde_json::Value>>,
104 last_workspace_edits_by_language_server: HashMap<usize, ProjectTransaction>,
105 next_language_server_id: usize,
106 client: Arc<client::Client>,
107 next_entry_id: Arc<AtomicUsize>,
108 next_diagnostic_group_id: usize,
109 user_store: ModelHandle<UserStore>,
110 project_store: ModelHandle<ProjectStore>,
111 fs: Arc<dyn Fs>,
112 client_state: ProjectClientState,
113 collaborators: HashMap<PeerId, Collaborator>,
114 client_subscriptions: Vec<client::Subscription>,
115 _subscriptions: Vec<gpui::Subscription>,
116 opened_buffer: (Rc<RefCell<watch::Sender<()>>>, watch::Receiver<()>),
117 shared_buffers: HashMap<PeerId, HashSet<u64>>,
118 loading_buffers: HashMap<
119 ProjectPath,
120 postage::watch::Receiver<Option<Result<ModelHandle<Buffer>, Arc<anyhow::Error>>>>,
121 >,
122 loading_local_worktrees:
123 HashMap<Arc<Path>, Shared<Task<Result<ModelHandle<Worktree>, Arc<anyhow::Error>>>>>,
124 opened_buffers: HashMap<u64, OpenBuffer>,
125 buffer_snapshots: HashMap<u64, Vec<(i32, TextBufferSnapshot)>>,
126 nonce: u128,
127 initialized_persistent_state: bool,
128 _maintain_buffer_languages: Task<()>,
129}
130
131#[derive(Error, Debug)]
132pub enum JoinProjectError {
133 #[error("host declined join request")]
134 HostDeclined,
135 #[error("host closed the project")]
136 HostClosedProject,
137 #[error("host went offline")]
138 HostWentOffline,
139 #[error("{0}")]
140 Other(#[from] anyhow::Error),
141}
142
143enum OpenBuffer {
144 Strong(ModelHandle<Buffer>),
145 Weak(WeakModelHandle<Buffer>),
146 Loading(Vec<Operation>),
147}
148
149enum WorktreeHandle {
150 Strong(ModelHandle<Worktree>),
151 Weak(WeakModelHandle<Worktree>),
152}
153
154enum ProjectClientState {
155 Local {
156 is_shared: bool,
157 remote_id_tx: watch::Sender<Option<u64>>,
158 remote_id_rx: watch::Receiver<Option<u64>>,
159 online_tx: watch::Sender<bool>,
160 online_rx: watch::Receiver<bool>,
161 _maintain_remote_id: Task<Option<()>>,
162 _maintain_online_status: Task<Option<()>>,
163 },
164 Remote {
165 sharing_has_stopped: bool,
166 remote_id: u64,
167 replica_id: ReplicaId,
168 _detect_unshare: Task<Option<()>>,
169 },
170}
171
172#[derive(Clone, Debug)]
173pub struct Collaborator {
174 pub user: Arc<User>,
175 pub peer_id: PeerId,
176 pub replica_id: ReplicaId,
177}
178
179#[derive(Clone, Debug, PartialEq, Eq)]
180pub enum Event {
181 ActiveEntryChanged(Option<ProjectEntryId>),
182 WorktreeAdded,
183 WorktreeRemoved(WorktreeId),
184 DiskBasedDiagnosticsStarted {
185 language_server_id: usize,
186 },
187 DiskBasedDiagnosticsFinished {
188 language_server_id: usize,
189 },
190 DiagnosticsUpdated {
191 path: ProjectPath,
192 language_server_id: usize,
193 },
194 RemoteIdChanged(Option<u64>),
195 CollaboratorLeft(PeerId),
196 ContactRequestedJoin(Arc<User>),
197 ContactCancelledJoinRequest(Arc<User>),
198}
199
200pub enum LanguageServerState {
201 Starting(Task<Option<Arc<LanguageServer>>>),
202 Running {
203 adapter: Arc<LspAdapter>,
204 server: Arc<LanguageServer>,
205 },
206}
207
208#[derive(Serialize)]
209pub struct LanguageServerStatus {
210 pub name: String,
211 pub pending_work: BTreeMap<String, LanguageServerProgress>,
212 pub has_pending_diagnostic_updates: bool,
213 progress_tokens: HashSet<String>,
214}
215
216#[derive(Clone, Debug, Serialize)]
217pub struct LanguageServerProgress {
218 pub message: Option<String>,
219 pub percentage: Option<usize>,
220 #[serde(skip_serializing)]
221 pub last_update_at: Instant,
222}
223
224#[derive(Clone, Debug, Eq, PartialEq, Hash, PartialOrd, Ord)]
225pub struct ProjectPath {
226 pub worktree_id: WorktreeId,
227 pub path: Arc<Path>,
228}
229
230#[derive(Copy, Clone, Debug, Default, PartialEq, Serialize)]
231pub struct DiagnosticSummary {
232 pub language_server_id: usize,
233 pub error_count: usize,
234 pub warning_count: usize,
235}
236
237#[derive(Debug, Clone)]
238pub struct Location {
239 pub buffer: ModelHandle<Buffer>,
240 pub range: Range<language::Anchor>,
241}
242
243#[derive(Debug, Clone)]
244pub struct LocationLink {
245 pub origin: Option<Location>,
246 pub target: Location,
247}
248
249#[derive(Debug)]
250pub struct DocumentHighlight {
251 pub range: Range<language::Anchor>,
252 pub kind: DocumentHighlightKind,
253}
254
255#[derive(Clone, Debug)]
256pub struct Symbol {
257 pub source_worktree_id: WorktreeId,
258 pub worktree_id: WorktreeId,
259 pub language_server_name: LanguageServerName,
260 pub path: PathBuf,
261 pub label: CodeLabel,
262 pub name: String,
263 pub kind: lsp::SymbolKind,
264 pub range: Range<PointUtf16>,
265 pub signature: [u8; 32],
266}
267
268#[derive(Clone, Debug, PartialEq)]
269pub struct HoverBlock {
270 pub text: String,
271 pub language: Option<String>,
272}
273
274impl HoverBlock {
275 fn try_new(marked_string: MarkedString) -> Option<Self> {
276 let result = match marked_string {
277 MarkedString::LanguageString(LanguageString { language, value }) => HoverBlock {
278 text: value,
279 language: Some(language),
280 },
281 MarkedString::String(text) => HoverBlock {
282 text,
283 language: None,
284 },
285 };
286 if result.text.is_empty() {
287 None
288 } else {
289 Some(result)
290 }
291 }
292}
293
294#[derive(Debug)]
295pub struct Hover {
296 pub contents: Vec<HoverBlock>,
297 pub range: Option<Range<language::Anchor>>,
298}
299
300#[derive(Default)]
301pub struct ProjectTransaction(pub HashMap<ModelHandle<Buffer>, language::Transaction>);
302
303impl DiagnosticSummary {
304 fn new<'a, T: 'a>(
305 language_server_id: usize,
306 diagnostics: impl IntoIterator<Item = &'a DiagnosticEntry<T>>,
307 ) -> Self {
308 let mut this = Self {
309 language_server_id,
310 error_count: 0,
311 warning_count: 0,
312 };
313
314 for entry in diagnostics {
315 if entry.diagnostic.is_primary {
316 match entry.diagnostic.severity {
317 DiagnosticSeverity::ERROR => this.error_count += 1,
318 DiagnosticSeverity::WARNING => this.warning_count += 1,
319 _ => {}
320 }
321 }
322 }
323
324 this
325 }
326
327 pub fn is_empty(&self) -> bool {
328 self.error_count == 0 && self.warning_count == 0
329 }
330
331 pub fn to_proto(&self, path: &Path) -> proto::DiagnosticSummary {
332 proto::DiagnosticSummary {
333 path: path.to_string_lossy().to_string(),
334 language_server_id: self.language_server_id as u64,
335 error_count: self.error_count as u32,
336 warning_count: self.warning_count as u32,
337 }
338 }
339}
340
341#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
342pub struct ProjectEntryId(usize);
343
344impl ProjectEntryId {
345 pub const MAX: Self = Self(usize::MAX);
346
347 pub fn new(counter: &AtomicUsize) -> Self {
348 Self(counter.fetch_add(1, SeqCst))
349 }
350
351 pub fn from_proto(id: u64) -> Self {
352 Self(id as usize)
353 }
354
355 pub fn to_proto(&self) -> u64 {
356 self.0 as u64
357 }
358
359 pub fn to_usize(&self) -> usize {
360 self.0
361 }
362}
363
364impl Project {
365 pub fn init(client: &Arc<Client>) {
366 client.add_model_message_handler(Self::handle_request_join_project);
367 client.add_model_message_handler(Self::handle_add_collaborator);
368 client.add_model_message_handler(Self::handle_buffer_reloaded);
369 client.add_model_message_handler(Self::handle_buffer_saved);
370 client.add_model_message_handler(Self::handle_start_language_server);
371 client.add_model_message_handler(Self::handle_update_language_server);
372 client.add_model_message_handler(Self::handle_remove_collaborator);
373 client.add_model_message_handler(Self::handle_join_project_request_cancelled);
374 client.add_model_message_handler(Self::handle_update_project);
375 client.add_model_message_handler(Self::handle_unregister_project);
376 client.add_model_message_handler(Self::handle_project_unshared);
377 client.add_model_message_handler(Self::handle_update_buffer_file);
378 client.add_model_message_handler(Self::handle_update_buffer);
379 client.add_model_message_handler(Self::handle_update_diagnostic_summary);
380 client.add_model_message_handler(Self::handle_update_worktree);
381 client.add_model_request_handler(Self::handle_create_project_entry);
382 client.add_model_request_handler(Self::handle_rename_project_entry);
383 client.add_model_request_handler(Self::handle_copy_project_entry);
384 client.add_model_request_handler(Self::handle_delete_project_entry);
385 client.add_model_request_handler(Self::handle_apply_additional_edits_for_completion);
386 client.add_model_request_handler(Self::handle_apply_code_action);
387 client.add_model_request_handler(Self::handle_reload_buffers);
388 client.add_model_request_handler(Self::handle_format_buffers);
389 client.add_model_request_handler(Self::handle_get_code_actions);
390 client.add_model_request_handler(Self::handle_get_completions);
391 client.add_model_request_handler(Self::handle_lsp_command::<GetHover>);
392 client.add_model_request_handler(Self::handle_lsp_command::<GetDefinition>);
393 client.add_model_request_handler(Self::handle_lsp_command::<GetDocumentHighlights>);
394 client.add_model_request_handler(Self::handle_lsp_command::<GetReferences>);
395 client.add_model_request_handler(Self::handle_lsp_command::<PrepareRename>);
396 client.add_model_request_handler(Self::handle_lsp_command::<PerformRename>);
397 client.add_model_request_handler(Self::handle_search_project);
398 client.add_model_request_handler(Self::handle_get_project_symbols);
399 client.add_model_request_handler(Self::handle_open_buffer_for_symbol);
400 client.add_model_request_handler(Self::handle_open_buffer_by_id);
401 client.add_model_request_handler(Self::handle_open_buffer_by_path);
402 client.add_model_request_handler(Self::handle_save_buffer);
403 }
404
405 pub fn local(
406 online: bool,
407 client: Arc<Client>,
408 user_store: ModelHandle<UserStore>,
409 project_store: ModelHandle<ProjectStore>,
410 languages: Arc<LanguageRegistry>,
411 fs: Arc<dyn Fs>,
412 cx: &mut MutableAppContext,
413 ) -> ModelHandle<Self> {
414 cx.add_model(|cx: &mut ModelContext<Self>| {
415 let (remote_id_tx, remote_id_rx) = watch::channel();
416 let _maintain_remote_id = cx.spawn_weak({
417 let mut status_rx = client.clone().status();
418 move |this, mut cx| async move {
419 while let Some(status) = status_rx.recv().await {
420 let this = this.upgrade(&cx)?;
421 if status.is_connected() {
422 this.update(&mut cx, |this, cx| this.register(cx))
423 .await
424 .log_err()?;
425 } else {
426 this.update(&mut cx, |this, cx| this.unregister(cx))
427 .await
428 .log_err();
429 }
430 }
431 None
432 }
433 });
434
435 let (online_tx, online_rx) = watch::channel_with(online);
436 let _maintain_online_status = cx.spawn_weak({
437 let mut online_rx = online_rx.clone();
438 move |this, mut cx| async move {
439 while let Some(online) = online_rx.recv().await {
440 let this = this.upgrade(&cx)?;
441 this.update(&mut cx, |this, cx| {
442 if !online {
443 this.unshared(cx);
444 }
445 this.metadata_changed(false, cx)
446 });
447 }
448 None
449 }
450 });
451
452 let handle = cx.weak_handle();
453 project_store.update(cx, |store, cx| store.add_project(handle, cx));
454
455 let (opened_buffer_tx, opened_buffer_rx) = watch::channel();
456 Self {
457 worktrees: Default::default(),
458 collaborators: Default::default(),
459 opened_buffers: Default::default(),
460 shared_buffers: Default::default(),
461 loading_buffers: Default::default(),
462 loading_local_worktrees: Default::default(),
463 buffer_snapshots: Default::default(),
464 client_state: ProjectClientState::Local {
465 is_shared: false,
466 remote_id_tx,
467 remote_id_rx,
468 online_tx,
469 online_rx,
470 _maintain_remote_id,
471 _maintain_online_status,
472 },
473 opened_buffer: (Rc::new(RefCell::new(opened_buffer_tx)), opened_buffer_rx),
474 client_subscriptions: Vec::new(),
475 _subscriptions: vec![cx.observe_global::<Settings, _>(Self::on_settings_changed)],
476 _maintain_buffer_languages: Self::maintain_buffer_languages(&languages, cx),
477 active_entry: None,
478 languages,
479 client,
480 user_store,
481 project_store,
482 fs,
483 next_entry_id: Default::default(),
484 next_diagnostic_group_id: Default::default(),
485 language_servers: Default::default(),
486 language_server_ids: Default::default(),
487 language_server_statuses: Default::default(),
488 last_workspace_edits_by_language_server: Default::default(),
489 language_server_settings: Default::default(),
490 next_language_server_id: 0,
491 nonce: StdRng::from_entropy().gen(),
492 initialized_persistent_state: false,
493 }
494 })
495 }
496
497 pub async fn remote(
498 remote_id: u64,
499 client: Arc<Client>,
500 user_store: ModelHandle<UserStore>,
501 project_store: ModelHandle<ProjectStore>,
502 languages: Arc<LanguageRegistry>,
503 fs: Arc<dyn Fs>,
504 mut cx: AsyncAppContext,
505 ) -> Result<ModelHandle<Self>, JoinProjectError> {
506 client.authenticate_and_connect(true, &cx).await?;
507
508 let response = client
509 .request(proto::JoinProject {
510 project_id: remote_id,
511 })
512 .await?;
513
514 let response = match response.variant.ok_or_else(|| anyhow!("missing variant"))? {
515 proto::join_project_response::Variant::Accept(response) => response,
516 proto::join_project_response::Variant::Decline(decline) => {
517 match proto::join_project_response::decline::Reason::from_i32(decline.reason) {
518 Some(proto::join_project_response::decline::Reason::Declined) => {
519 Err(JoinProjectError::HostDeclined)?
520 }
521 Some(proto::join_project_response::decline::Reason::Closed) => {
522 Err(JoinProjectError::HostClosedProject)?
523 }
524 Some(proto::join_project_response::decline::Reason::WentOffline) => {
525 Err(JoinProjectError::HostWentOffline)?
526 }
527 None => Err(anyhow!("missing decline reason"))?,
528 }
529 }
530 };
531
532 let replica_id = response.replica_id as ReplicaId;
533
534 let mut worktrees = Vec::new();
535 for worktree in response.worktrees {
536 let worktree = cx
537 .update(|cx| Worktree::remote(remote_id, replica_id, worktree, client.clone(), cx));
538 worktrees.push(worktree);
539 }
540
541 let (opened_buffer_tx, opened_buffer_rx) = watch::channel();
542 let this = cx.add_model(|cx: &mut ModelContext<Self>| {
543 let handle = cx.weak_handle();
544 project_store.update(cx, |store, cx| store.add_project(handle, cx));
545
546 let mut this = Self {
547 worktrees: Vec::new(),
548 loading_buffers: Default::default(),
549 opened_buffer: (Rc::new(RefCell::new(opened_buffer_tx)), opened_buffer_rx),
550 shared_buffers: Default::default(),
551 loading_local_worktrees: Default::default(),
552 active_entry: None,
553 collaborators: Default::default(),
554 _maintain_buffer_languages: Self::maintain_buffer_languages(&languages, cx),
555 languages,
556 user_store: user_store.clone(),
557 project_store,
558 fs,
559 next_entry_id: Default::default(),
560 next_diagnostic_group_id: Default::default(),
561 client_subscriptions: vec![client.add_model_for_remote_entity(remote_id, cx)],
562 _subscriptions: Default::default(),
563 client: client.clone(),
564 client_state: ProjectClientState::Remote {
565 sharing_has_stopped: false,
566 remote_id,
567 replica_id,
568 _detect_unshare: cx.spawn_weak(move |this, mut cx| {
569 async move {
570 let mut status = client.status();
571 let is_connected =
572 status.next().await.map_or(false, |s| s.is_connected());
573 // Even if we're initially connected, any future change of the status means we momentarily disconnected.
574 if !is_connected || status.next().await.is_some() {
575 if let Some(this) = this.upgrade(&cx) {
576 this.update(&mut cx, |this, cx| this.removed_from_project(cx))
577 }
578 }
579 Ok(())
580 }
581 .log_err()
582 }),
583 },
584 language_servers: Default::default(),
585 language_server_ids: Default::default(),
586 language_server_settings: Default::default(),
587 language_server_statuses: response
588 .language_servers
589 .into_iter()
590 .map(|server| {
591 (
592 server.id as usize,
593 LanguageServerStatus {
594 name: server.name,
595 pending_work: Default::default(),
596 has_pending_diagnostic_updates: false,
597 progress_tokens: Default::default(),
598 },
599 )
600 })
601 .collect(),
602 last_workspace_edits_by_language_server: Default::default(),
603 next_language_server_id: 0,
604 opened_buffers: Default::default(),
605 buffer_snapshots: Default::default(),
606 nonce: StdRng::from_entropy().gen(),
607 initialized_persistent_state: false,
608 };
609 for worktree in worktrees {
610 this.add_worktree(&worktree, cx);
611 }
612 this
613 });
614
615 let user_ids = response
616 .collaborators
617 .iter()
618 .map(|peer| peer.user_id)
619 .collect();
620 user_store
621 .update(&mut cx, |user_store, cx| user_store.get_users(user_ids, cx))
622 .await?;
623 let mut collaborators = HashMap::default();
624 for message in response.collaborators {
625 let collaborator = Collaborator::from_proto(message, &user_store, &mut cx).await?;
626 collaborators.insert(collaborator.peer_id, collaborator);
627 }
628
629 this.update(&mut cx, |this, _| {
630 this.collaborators = collaborators;
631 });
632
633 Ok(this)
634 }
635
636 #[cfg(any(test, feature = "test-support"))]
637 pub async fn test(
638 fs: Arc<dyn Fs>,
639 root_paths: impl IntoIterator<Item = &Path>,
640 cx: &mut gpui::TestAppContext,
641 ) -> ModelHandle<Project> {
642 if !cx.read(|cx| cx.has_global::<Settings>()) {
643 cx.update(|cx| cx.set_global(Settings::test(cx)));
644 }
645
646 let languages = Arc::new(LanguageRegistry::test());
647 let http_client = client::test::FakeHttpClient::with_404_response();
648 let client = client::Client::new(http_client.clone());
649 let user_store = cx.add_model(|cx| UserStore::new(client.clone(), http_client, cx));
650 let project_store = cx.add_model(|_| ProjectStore::new(Db::open_fake()));
651 let project = cx.update(|cx| {
652 Project::local(true, client, user_store, project_store, languages, fs, cx)
653 });
654 for path in root_paths {
655 let (tree, _) = project
656 .update(cx, |project, cx| {
657 project.find_or_create_local_worktree(path, true, cx)
658 })
659 .await
660 .unwrap();
661 tree.read_with(cx, |tree, _| tree.as_local().unwrap().scan_complete())
662 .await;
663 }
664 project
665 }
666
667 pub fn restore_state(&mut self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {
668 if self.is_remote() {
669 return Task::ready(Ok(()));
670 }
671
672 let db = self.project_store.read(cx).db.clone();
673 let keys = self.db_keys_for_online_state(cx);
674 let online_by_default = cx.global::<Settings>().projects_online_by_default;
675 let read_online = cx.background().spawn(async move {
676 let values = db.read(keys)?;
677 anyhow::Ok(
678 values
679 .into_iter()
680 .all(|e| e.map_or(online_by_default, |e| e == [true as u8])),
681 )
682 });
683 cx.spawn(|this, mut cx| async move {
684 let online = read_online.await.log_err().unwrap_or(false);
685 this.update(&mut cx, |this, cx| {
686 this.initialized_persistent_state = true;
687 if let ProjectClientState::Local { online_tx, .. } = &mut this.client_state {
688 let mut online_tx = online_tx.borrow_mut();
689 if *online_tx != online {
690 *online_tx = online;
691 drop(online_tx);
692 this.metadata_changed(false, cx);
693 }
694 }
695 });
696 Ok(())
697 })
698 }
699
700 fn persist_state(&mut self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {
701 if self.is_remote() || !self.initialized_persistent_state {
702 return Task::ready(Ok(()));
703 }
704
705 let db = self.project_store.read(cx).db.clone();
706 let keys = self.db_keys_for_online_state(cx);
707 let is_online = self.is_online();
708 cx.background().spawn(async move {
709 let value = &[is_online as u8];
710 db.write(keys.into_iter().map(|key| (key, value)))
711 })
712 }
713
714 fn on_settings_changed(&mut self, cx: &mut ModelContext<Self>) {
715 let settings = cx.global::<Settings>();
716
717 let mut language_servers_to_start = Vec::new();
718 for buffer in self.opened_buffers.values() {
719 if let Some(buffer) = buffer.upgrade(cx) {
720 let buffer = buffer.read(cx);
721 if let Some((file, language)) = File::from_dyn(buffer.file()).zip(buffer.language())
722 {
723 if settings.enable_language_server(Some(&language.name())) {
724 let worktree = file.worktree.read(cx);
725 language_servers_to_start.push((
726 worktree.id(),
727 worktree.as_local().unwrap().abs_path().clone(),
728 language.clone(),
729 ));
730 }
731 }
732 }
733 }
734
735 let mut language_servers_to_stop = Vec::new();
736 for language in self.languages.to_vec() {
737 if let Some(lsp_adapter) = language.lsp_adapter() {
738 if !settings.enable_language_server(Some(&language.name())) {
739 let lsp_name = &lsp_adapter.name;
740 for (worktree_id, started_lsp_name) in self.language_server_ids.keys() {
741 if lsp_name == started_lsp_name {
742 language_servers_to_stop.push((*worktree_id, started_lsp_name.clone()));
743 }
744 }
745 }
746 }
747 }
748
749 // Stop all newly-disabled language servers.
750 for (worktree_id, adapter_name) in language_servers_to_stop {
751 self.stop_language_server(worktree_id, adapter_name, cx)
752 .detach();
753 }
754
755 // Start all the newly-enabled language servers.
756 for (worktree_id, worktree_path, language) in language_servers_to_start {
757 self.start_language_server(worktree_id, worktree_path, language, cx);
758 }
759
760 cx.notify();
761 }
762
763 pub fn buffer_for_id(&self, remote_id: u64, cx: &AppContext) -> Option<ModelHandle<Buffer>> {
764 self.opened_buffers
765 .get(&remote_id)
766 .and_then(|buffer| buffer.upgrade(cx))
767 }
768
769 pub fn languages(&self) -> &Arc<LanguageRegistry> {
770 &self.languages
771 }
772
773 pub fn client(&self) -> Arc<Client> {
774 self.client.clone()
775 }
776
777 pub fn user_store(&self) -> ModelHandle<UserStore> {
778 self.user_store.clone()
779 }
780
781 pub fn project_store(&self) -> ModelHandle<ProjectStore> {
782 self.project_store.clone()
783 }
784
785 #[cfg(any(test, feature = "test-support"))]
786 pub fn check_invariants(&self, cx: &AppContext) {
787 if self.is_local() {
788 let mut worktree_root_paths = HashMap::default();
789 for worktree in self.worktrees(cx) {
790 let worktree = worktree.read(cx);
791 let abs_path = worktree.as_local().unwrap().abs_path().clone();
792 let prev_worktree_id = worktree_root_paths.insert(abs_path.clone(), worktree.id());
793 assert_eq!(
794 prev_worktree_id,
795 None,
796 "abs path {:?} for worktree {:?} is not unique ({:?} was already registered with the same path)",
797 abs_path,
798 worktree.id(),
799 prev_worktree_id
800 )
801 }
802 } else {
803 let replica_id = self.replica_id();
804 for buffer in self.opened_buffers.values() {
805 if let Some(buffer) = buffer.upgrade(cx) {
806 let buffer = buffer.read(cx);
807 assert_eq!(
808 buffer.deferred_ops_len(),
809 0,
810 "replica {}, buffer {} has deferred operations",
811 replica_id,
812 buffer.remote_id()
813 );
814 }
815 }
816 }
817 }
818
819 #[cfg(any(test, feature = "test-support"))]
820 pub fn has_open_buffer(&self, path: impl Into<ProjectPath>, cx: &AppContext) -> bool {
821 let path = path.into();
822 if let Some(worktree) = self.worktree_for_id(path.worktree_id, cx) {
823 self.opened_buffers.iter().any(|(_, buffer)| {
824 if let Some(buffer) = buffer.upgrade(cx) {
825 if let Some(file) = File::from_dyn(buffer.read(cx).file()) {
826 if file.worktree == worktree && file.path() == &path.path {
827 return true;
828 }
829 }
830 }
831 false
832 })
833 } else {
834 false
835 }
836 }
837
838 pub fn fs(&self) -> &Arc<dyn Fs> {
839 &self.fs
840 }
841
842 pub fn set_online(&mut self, online: bool, _: &mut ModelContext<Self>) {
843 if let ProjectClientState::Local { online_tx, .. } = &mut self.client_state {
844 let mut online_tx = online_tx.borrow_mut();
845 if *online_tx != online {
846 *online_tx = online;
847 }
848 }
849 }
850
851 pub fn is_online(&self) -> bool {
852 match &self.client_state {
853 ProjectClientState::Local { online_rx, .. } => *online_rx.borrow(),
854 ProjectClientState::Remote { .. } => true,
855 }
856 }
857
858 fn unregister(&mut self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {
859 self.unshared(cx);
860 if let ProjectClientState::Local { remote_id_rx, .. } = &mut self.client_state {
861 if let Some(remote_id) = *remote_id_rx.borrow() {
862 let request = self.client.request(proto::UnregisterProject {
863 project_id: remote_id,
864 });
865 return cx.spawn(|this, mut cx| async move {
866 let response = request.await;
867
868 // Unregistering the project causes the server to send out a
869 // contact update removing this project from the host's list
870 // of online projects. Wait until this contact update has been
871 // processed before clearing out this project's remote id, so
872 // that there is no moment where this project appears in the
873 // contact metadata and *also* has no remote id.
874 this.update(&mut cx, |this, cx| {
875 this.user_store()
876 .update(cx, |store, _| store.contact_updates_done())
877 })
878 .await;
879
880 this.update(&mut cx, |this, cx| {
881 if let ProjectClientState::Local { remote_id_tx, .. } =
882 &mut this.client_state
883 {
884 *remote_id_tx.borrow_mut() = None;
885 }
886 this.client_subscriptions.clear();
887 this.metadata_changed(false, cx);
888 });
889 response.map(drop)
890 });
891 }
892 }
893 Task::ready(Ok(()))
894 }
895
896 fn register(&mut self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {
897 if let ProjectClientState::Local {
898 remote_id_rx,
899 online_rx,
900 ..
901 } = &self.client_state
902 {
903 if remote_id_rx.borrow().is_some() {
904 return Task::ready(Ok(()));
905 }
906
907 let response = self.client.request(proto::RegisterProject {
908 online: *online_rx.borrow(),
909 });
910 cx.spawn(|this, mut cx| async move {
911 let remote_id = response.await?.project_id;
912 this.update(&mut cx, |this, cx| {
913 if let ProjectClientState::Local { remote_id_tx, .. } = &mut this.client_state {
914 *remote_id_tx.borrow_mut() = Some(remote_id);
915 }
916
917 this.metadata_changed(false, cx);
918 cx.emit(Event::RemoteIdChanged(Some(remote_id)));
919 this.client_subscriptions
920 .push(this.client.add_model_for_remote_entity(remote_id, cx));
921 Ok(())
922 })
923 })
924 } else {
925 Task::ready(Err(anyhow!("can't register a remote project")))
926 }
927 }
928
929 pub fn remote_id(&self) -> Option<u64> {
930 match &self.client_state {
931 ProjectClientState::Local { remote_id_rx, .. } => *remote_id_rx.borrow(),
932 ProjectClientState::Remote { remote_id, .. } => Some(*remote_id),
933 }
934 }
935
936 pub fn next_remote_id(&self) -> impl Future<Output = u64> {
937 let mut id = None;
938 let mut watch = None;
939 match &self.client_state {
940 ProjectClientState::Local { remote_id_rx, .. } => watch = Some(remote_id_rx.clone()),
941 ProjectClientState::Remote { remote_id, .. } => id = Some(*remote_id),
942 }
943
944 async move {
945 if let Some(id) = id {
946 return id;
947 }
948 let mut watch = watch.unwrap();
949 loop {
950 let id = *watch.borrow();
951 if let Some(id) = id {
952 return id;
953 }
954 watch.next().await;
955 }
956 }
957 }
958
959 pub fn shared_remote_id(&self) -> Option<u64> {
960 match &self.client_state {
961 ProjectClientState::Local {
962 remote_id_rx,
963 is_shared,
964 ..
965 } => {
966 if *is_shared {
967 *remote_id_rx.borrow()
968 } else {
969 None
970 }
971 }
972 ProjectClientState::Remote { remote_id, .. } => Some(*remote_id),
973 }
974 }
975
976 pub fn replica_id(&self) -> ReplicaId {
977 match &self.client_state {
978 ProjectClientState::Local { .. } => 0,
979 ProjectClientState::Remote { replica_id, .. } => *replica_id,
980 }
981 }
982
983 fn metadata_changed(&mut self, persist: bool, cx: &mut ModelContext<Self>) {
984 if let ProjectClientState::Local {
985 remote_id_rx,
986 online_rx,
987 ..
988 } = &self.client_state
989 {
990 // Broadcast worktrees only if the project is online.
991 let worktrees = if *online_rx.borrow() {
992 self.worktrees
993 .iter()
994 .filter_map(|worktree| {
995 worktree
996 .upgrade(&cx)
997 .map(|worktree| worktree.read(cx).as_local().unwrap().metadata_proto())
998 })
999 .collect()
1000 } else {
1001 Default::default()
1002 };
1003 if let Some(project_id) = *remote_id_rx.borrow() {
1004 let online = *online_rx.borrow();
1005 self.client
1006 .send(proto::UpdateProject {
1007 project_id,
1008 worktrees,
1009 online,
1010 })
1011 .log_err();
1012
1013 if online {
1014 let worktrees = self.visible_worktrees(cx).collect::<Vec<_>>();
1015 let scans_complete =
1016 futures::future::join_all(worktrees.iter().filter_map(|worktree| {
1017 Some(worktree.read(cx).as_local()?.scan_complete())
1018 }));
1019
1020 let worktrees = worktrees.into_iter().map(|handle| handle.downgrade());
1021 cx.spawn_weak(move |_, cx| async move {
1022 scans_complete.await;
1023 cx.read(|cx| {
1024 for worktree in worktrees {
1025 if let Some(worktree) = worktree
1026 .upgrade(cx)
1027 .and_then(|worktree| worktree.read(cx).as_local())
1028 {
1029 worktree.send_extension_counts(project_id);
1030 }
1031 }
1032 })
1033 })
1034 .detach();
1035 }
1036 }
1037
1038 self.project_store.update(cx, |_, cx| cx.notify());
1039 if persist {
1040 self.persist_state(cx).detach_and_log_err(cx);
1041 }
1042 cx.notify();
1043 }
1044 }
1045
1046 pub fn collaborators(&self) -> &HashMap<PeerId, Collaborator> {
1047 &self.collaborators
1048 }
1049
1050 pub fn worktrees<'a>(
1051 &'a self,
1052 cx: &'a AppContext,
1053 ) -> impl 'a + DoubleEndedIterator<Item = ModelHandle<Worktree>> {
1054 self.worktrees
1055 .iter()
1056 .filter_map(move |worktree| worktree.upgrade(cx))
1057 }
1058
1059 pub fn visible_worktrees<'a>(
1060 &'a self,
1061 cx: &'a AppContext,
1062 ) -> impl 'a + DoubleEndedIterator<Item = ModelHandle<Worktree>> {
1063 self.worktrees.iter().filter_map(|worktree| {
1064 worktree.upgrade(cx).and_then(|worktree| {
1065 if worktree.read(cx).is_visible() {
1066 Some(worktree)
1067 } else {
1068 None
1069 }
1070 })
1071 })
1072 }
1073
1074 pub fn worktree_root_names<'a>(&'a self, cx: &'a AppContext) -> impl Iterator<Item = &'a str> {
1075 self.visible_worktrees(cx)
1076 .map(|tree| tree.read(cx).root_name())
1077 }
1078
1079 fn db_keys_for_online_state(&self, cx: &AppContext) -> Vec<String> {
1080 self.worktrees
1081 .iter()
1082 .filter_map(|worktree| {
1083 let worktree = worktree.upgrade(&cx)?.read(cx);
1084 if worktree.is_visible() {
1085 Some(format!(
1086 "project-path-online:{}",
1087 worktree.as_local().unwrap().abs_path().to_string_lossy()
1088 ))
1089 } else {
1090 None
1091 }
1092 })
1093 .collect::<Vec<_>>()
1094 }
1095
1096 pub fn worktree_for_id(
1097 &self,
1098 id: WorktreeId,
1099 cx: &AppContext,
1100 ) -> Option<ModelHandle<Worktree>> {
1101 self.worktrees(cx)
1102 .find(|worktree| worktree.read(cx).id() == id)
1103 }
1104
1105 pub fn worktree_for_entry(
1106 &self,
1107 entry_id: ProjectEntryId,
1108 cx: &AppContext,
1109 ) -> Option<ModelHandle<Worktree>> {
1110 self.worktrees(cx)
1111 .find(|worktree| worktree.read(cx).contains_entry(entry_id))
1112 }
1113
1114 pub fn worktree_id_for_entry(
1115 &self,
1116 entry_id: ProjectEntryId,
1117 cx: &AppContext,
1118 ) -> Option<WorktreeId> {
1119 self.worktree_for_entry(entry_id, cx)
1120 .map(|worktree| worktree.read(cx).id())
1121 }
1122
1123 pub fn contains_paths(&self, paths: &[PathBuf], cx: &AppContext) -> bool {
1124 paths.iter().all(|path| self.contains_path(&path, cx))
1125 }
1126
1127 pub fn contains_path(&self, path: &Path, cx: &AppContext) -> bool {
1128 for worktree in self.worktrees(cx) {
1129 let worktree = worktree.read(cx).as_local();
1130 if worktree.map_or(false, |w| w.contains_abs_path(path)) {
1131 return true;
1132 }
1133 }
1134 false
1135 }
1136
1137 pub fn create_entry(
1138 &mut self,
1139 project_path: impl Into<ProjectPath>,
1140 is_directory: bool,
1141 cx: &mut ModelContext<Self>,
1142 ) -> Option<Task<Result<Entry>>> {
1143 let project_path = project_path.into();
1144 let worktree = self.worktree_for_id(project_path.worktree_id, cx)?;
1145 if self.is_local() {
1146 Some(worktree.update(cx, |worktree, cx| {
1147 worktree
1148 .as_local_mut()
1149 .unwrap()
1150 .create_entry(project_path.path, is_directory, cx)
1151 }))
1152 } else {
1153 let client = self.client.clone();
1154 let project_id = self.remote_id().unwrap();
1155 Some(cx.spawn_weak(|_, mut cx| async move {
1156 let response = client
1157 .request(proto::CreateProjectEntry {
1158 worktree_id: project_path.worktree_id.to_proto(),
1159 project_id,
1160 path: project_path.path.as_os_str().as_bytes().to_vec(),
1161 is_directory,
1162 })
1163 .await?;
1164 let entry = response
1165 .entry
1166 .ok_or_else(|| anyhow!("missing entry in response"))?;
1167 worktree
1168 .update(&mut cx, |worktree, cx| {
1169 worktree.as_remote_mut().unwrap().insert_entry(
1170 entry,
1171 response.worktree_scan_id as usize,
1172 cx,
1173 )
1174 })
1175 .await
1176 }))
1177 }
1178 }
1179
1180 pub fn copy_entry(
1181 &mut self,
1182 entry_id: ProjectEntryId,
1183 new_path: impl Into<Arc<Path>>,
1184 cx: &mut ModelContext<Self>,
1185 ) -> Option<Task<Result<Entry>>> {
1186 let worktree = self.worktree_for_entry(entry_id, cx)?;
1187 let new_path = new_path.into();
1188 if self.is_local() {
1189 worktree.update(cx, |worktree, cx| {
1190 worktree
1191 .as_local_mut()
1192 .unwrap()
1193 .copy_entry(entry_id, new_path, cx)
1194 })
1195 } else {
1196 let client = self.client.clone();
1197 let project_id = self.remote_id().unwrap();
1198
1199 Some(cx.spawn_weak(|_, mut cx| async move {
1200 let response = client
1201 .request(proto::CopyProjectEntry {
1202 project_id,
1203 entry_id: entry_id.to_proto(),
1204 new_path: new_path.as_os_str().as_bytes().to_vec(),
1205 })
1206 .await?;
1207 let entry = response
1208 .entry
1209 .ok_or_else(|| anyhow!("missing entry in response"))?;
1210 worktree
1211 .update(&mut cx, |worktree, cx| {
1212 worktree.as_remote_mut().unwrap().insert_entry(
1213 entry,
1214 response.worktree_scan_id as usize,
1215 cx,
1216 )
1217 })
1218 .await
1219 }))
1220 }
1221 }
1222
1223 pub fn rename_entry(
1224 &mut self,
1225 entry_id: ProjectEntryId,
1226 new_path: impl Into<Arc<Path>>,
1227 cx: &mut ModelContext<Self>,
1228 ) -> Option<Task<Result<Entry>>> {
1229 let worktree = self.worktree_for_entry(entry_id, cx)?;
1230 let new_path = new_path.into();
1231 if self.is_local() {
1232 worktree.update(cx, |worktree, cx| {
1233 worktree
1234 .as_local_mut()
1235 .unwrap()
1236 .rename_entry(entry_id, new_path, cx)
1237 })
1238 } else {
1239 let client = self.client.clone();
1240 let project_id = self.remote_id().unwrap();
1241
1242 Some(cx.spawn_weak(|_, mut cx| async move {
1243 let response = client
1244 .request(proto::RenameProjectEntry {
1245 project_id,
1246 entry_id: entry_id.to_proto(),
1247 new_path: new_path.as_os_str().as_bytes().to_vec(),
1248 })
1249 .await?;
1250 let entry = response
1251 .entry
1252 .ok_or_else(|| anyhow!("missing entry in response"))?;
1253 worktree
1254 .update(&mut cx, |worktree, cx| {
1255 worktree.as_remote_mut().unwrap().insert_entry(
1256 entry,
1257 response.worktree_scan_id as usize,
1258 cx,
1259 )
1260 })
1261 .await
1262 }))
1263 }
1264 }
1265
1266 pub fn delete_entry(
1267 &mut self,
1268 entry_id: ProjectEntryId,
1269 cx: &mut ModelContext<Self>,
1270 ) -> Option<Task<Result<()>>> {
1271 let worktree = self.worktree_for_entry(entry_id, cx)?;
1272 if self.is_local() {
1273 worktree.update(cx, |worktree, cx| {
1274 worktree.as_local_mut().unwrap().delete_entry(entry_id, cx)
1275 })
1276 } else {
1277 let client = self.client.clone();
1278 let project_id = self.remote_id().unwrap();
1279 Some(cx.spawn_weak(|_, mut cx| async move {
1280 let response = client
1281 .request(proto::DeleteProjectEntry {
1282 project_id,
1283 entry_id: entry_id.to_proto(),
1284 })
1285 .await?;
1286 worktree
1287 .update(&mut cx, move |worktree, cx| {
1288 worktree.as_remote_mut().unwrap().delete_entry(
1289 entry_id,
1290 response.worktree_scan_id as usize,
1291 cx,
1292 )
1293 })
1294 .await
1295 }))
1296 }
1297 }
1298
1299 fn share(&mut self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {
1300 if !self.is_online() {
1301 return Task::ready(Err(anyhow!("can't share an offline project")));
1302 }
1303
1304 let project_id;
1305 if let ProjectClientState::Local {
1306 remote_id_rx,
1307 is_shared,
1308 ..
1309 } = &mut self.client_state
1310 {
1311 if *is_shared {
1312 return Task::ready(Ok(()));
1313 }
1314 *is_shared = true;
1315 if let Some(id) = *remote_id_rx.borrow() {
1316 project_id = id;
1317 } else {
1318 return Task::ready(Err(anyhow!("project hasn't been registered")));
1319 }
1320 } else {
1321 return Task::ready(Err(anyhow!("can't share a remote project")));
1322 };
1323
1324 for open_buffer in self.opened_buffers.values_mut() {
1325 match open_buffer {
1326 OpenBuffer::Strong(_) => {}
1327 OpenBuffer::Weak(buffer) => {
1328 if let Some(buffer) = buffer.upgrade(cx) {
1329 *open_buffer = OpenBuffer::Strong(buffer);
1330 }
1331 }
1332 OpenBuffer::Loading(_) => unreachable!(),
1333 }
1334 }
1335
1336 for worktree_handle in self.worktrees.iter_mut() {
1337 match worktree_handle {
1338 WorktreeHandle::Strong(_) => {}
1339 WorktreeHandle::Weak(worktree) => {
1340 if let Some(worktree) = worktree.upgrade(cx) {
1341 *worktree_handle = WorktreeHandle::Strong(worktree);
1342 }
1343 }
1344 }
1345 }
1346
1347 let mut tasks = Vec::new();
1348 for worktree in self.worktrees(cx).collect::<Vec<_>>() {
1349 worktree.update(cx, |worktree, cx| {
1350 let worktree = worktree.as_local_mut().unwrap();
1351 tasks.push(worktree.share(project_id, cx));
1352 });
1353 }
1354
1355 for (server_id, status) in &self.language_server_statuses {
1356 self.client
1357 .send(proto::StartLanguageServer {
1358 project_id,
1359 server: Some(proto::LanguageServer {
1360 id: *server_id as u64,
1361 name: status.name.clone(),
1362 }),
1363 })
1364 .log_err();
1365 }
1366
1367 cx.spawn(|this, mut cx| async move {
1368 for task in tasks {
1369 task.await?;
1370 }
1371 this.update(&mut cx, |_, cx| cx.notify());
1372 Ok(())
1373 })
1374 }
1375
1376 fn unshared(&mut self, cx: &mut ModelContext<Self>) {
1377 if let ProjectClientState::Local { is_shared, .. } = &mut self.client_state {
1378 if !*is_shared {
1379 return;
1380 }
1381
1382 *is_shared = false;
1383 self.collaborators.clear();
1384 self.shared_buffers.clear();
1385 for worktree_handle in self.worktrees.iter_mut() {
1386 if let WorktreeHandle::Strong(worktree) = worktree_handle {
1387 let is_visible = worktree.update(cx, |worktree, _| {
1388 worktree.as_local_mut().unwrap().unshare();
1389 worktree.is_visible()
1390 });
1391 if !is_visible {
1392 *worktree_handle = WorktreeHandle::Weak(worktree.downgrade());
1393 }
1394 }
1395 }
1396
1397 for open_buffer in self.opened_buffers.values_mut() {
1398 match open_buffer {
1399 OpenBuffer::Strong(buffer) => {
1400 *open_buffer = OpenBuffer::Weak(buffer.downgrade());
1401 }
1402 _ => {}
1403 }
1404 }
1405
1406 cx.notify();
1407 } else {
1408 log::error!("attempted to unshare a remote project");
1409 }
1410 }
1411
1412 pub fn respond_to_join_request(
1413 &mut self,
1414 requester_id: u64,
1415 allow: bool,
1416 cx: &mut ModelContext<Self>,
1417 ) {
1418 if let Some(project_id) = self.remote_id() {
1419 let share = if self.is_online() && allow {
1420 Some(self.share(cx))
1421 } else {
1422 None
1423 };
1424 let client = self.client.clone();
1425 cx.foreground()
1426 .spawn(async move {
1427 client.send(proto::RespondToJoinProjectRequest {
1428 requester_id,
1429 project_id,
1430 allow,
1431 })?;
1432 if let Some(share) = share {
1433 share.await?;
1434 }
1435 anyhow::Ok(())
1436 })
1437 .detach_and_log_err(cx);
1438 }
1439 }
1440
1441 fn removed_from_project(&mut self, cx: &mut ModelContext<Self>) {
1442 if let ProjectClientState::Remote {
1443 sharing_has_stopped,
1444 ..
1445 } = &mut self.client_state
1446 {
1447 *sharing_has_stopped = true;
1448 self.collaborators.clear();
1449 for worktree in &self.worktrees {
1450 if let Some(worktree) = worktree.upgrade(cx) {
1451 worktree.update(cx, |worktree, _| {
1452 if let Some(worktree) = worktree.as_remote_mut() {
1453 worktree.disconnected_from_host();
1454 }
1455 });
1456 }
1457 }
1458 cx.notify();
1459 }
1460 }
1461
1462 pub fn is_read_only(&self) -> bool {
1463 match &self.client_state {
1464 ProjectClientState::Local { .. } => false,
1465 ProjectClientState::Remote {
1466 sharing_has_stopped,
1467 ..
1468 } => *sharing_has_stopped,
1469 }
1470 }
1471
1472 pub fn is_local(&self) -> bool {
1473 match &self.client_state {
1474 ProjectClientState::Local { .. } => true,
1475 ProjectClientState::Remote { .. } => false,
1476 }
1477 }
1478
1479 pub fn is_remote(&self) -> bool {
1480 !self.is_local()
1481 }
1482
1483 pub fn create_buffer(
1484 &mut self,
1485 text: &str,
1486 language: Option<Arc<Language>>,
1487 cx: &mut ModelContext<Self>,
1488 ) -> Result<ModelHandle<Buffer>> {
1489 if self.is_remote() {
1490 return Err(anyhow!("creating buffers as a guest is not supported yet"));
1491 }
1492
1493 let buffer = cx.add_model(|cx| {
1494 Buffer::new(self.replica_id(), text, cx)
1495 .with_language(language.unwrap_or(language::PLAIN_TEXT.clone()), cx)
1496 });
1497 self.register_buffer(&buffer, cx)?;
1498 Ok(buffer)
1499 }
1500
1501 pub fn open_path(
1502 &mut self,
1503 path: impl Into<ProjectPath>,
1504 cx: &mut ModelContext<Self>,
1505 ) -> Task<Result<(ProjectEntryId, AnyModelHandle)>> {
1506 let task = self.open_buffer(path, cx);
1507 cx.spawn_weak(|_, cx| async move {
1508 let buffer = task.await?;
1509 let project_entry_id = buffer
1510 .read_with(&cx, |buffer, cx| {
1511 File::from_dyn(buffer.file()).and_then(|file| file.project_entry_id(cx))
1512 })
1513 .ok_or_else(|| anyhow!("no project entry"))?;
1514 Ok((project_entry_id, buffer.into()))
1515 })
1516 }
1517
1518 pub fn open_local_buffer(
1519 &mut self,
1520 abs_path: impl AsRef<Path>,
1521 cx: &mut ModelContext<Self>,
1522 ) -> Task<Result<ModelHandle<Buffer>>> {
1523 if let Some((worktree, relative_path)) = self.find_local_worktree(abs_path.as_ref(), cx) {
1524 self.open_buffer((worktree.read(cx).id(), relative_path), cx)
1525 } else {
1526 Task::ready(Err(anyhow!("no such path")))
1527 }
1528 }
1529
1530 pub fn open_buffer(
1531 &mut self,
1532 path: impl Into<ProjectPath>,
1533 cx: &mut ModelContext<Self>,
1534 ) -> Task<Result<ModelHandle<Buffer>>> {
1535 let project_path = path.into();
1536 let worktree = if let Some(worktree) = self.worktree_for_id(project_path.worktree_id, cx) {
1537 worktree
1538 } else {
1539 return Task::ready(Err(anyhow!("no such worktree")));
1540 };
1541
1542 // If there is already a buffer for the given path, then return it.
1543 let existing_buffer = self.get_open_buffer(&project_path, cx);
1544 if let Some(existing_buffer) = existing_buffer {
1545 return Task::ready(Ok(existing_buffer));
1546 }
1547
1548 let mut loading_watch = match self.loading_buffers.entry(project_path.clone()) {
1549 // If the given path is already being loaded, then wait for that existing
1550 // task to complete and return the same buffer.
1551 hash_map::Entry::Occupied(e) => e.get().clone(),
1552
1553 // Otherwise, record the fact that this path is now being loaded.
1554 hash_map::Entry::Vacant(entry) => {
1555 let (mut tx, rx) = postage::watch::channel();
1556 entry.insert(rx.clone());
1557
1558 let load_buffer = if worktree.read(cx).is_local() {
1559 self.open_local_buffer_internal(&project_path.path, &worktree, cx)
1560 } else {
1561 self.open_remote_buffer_internal(&project_path.path, &worktree, cx)
1562 };
1563
1564 cx.spawn(move |this, mut cx| async move {
1565 let load_result = load_buffer.await;
1566 *tx.borrow_mut() = Some(this.update(&mut cx, |this, _| {
1567 // Record the fact that the buffer is no longer loading.
1568 this.loading_buffers.remove(&project_path);
1569 let buffer = load_result.map_err(Arc::new)?;
1570 Ok(buffer)
1571 }));
1572 })
1573 .detach();
1574 rx
1575 }
1576 };
1577
1578 cx.foreground().spawn(async move {
1579 loop {
1580 if let Some(result) = loading_watch.borrow().as_ref() {
1581 match result {
1582 Ok(buffer) => return Ok(buffer.clone()),
1583 Err(error) => return Err(anyhow!("{}", error)),
1584 }
1585 }
1586 loading_watch.next().await;
1587 }
1588 })
1589 }
1590
1591 fn open_local_buffer_internal(
1592 &mut self,
1593 path: &Arc<Path>,
1594 worktree: &ModelHandle<Worktree>,
1595 cx: &mut ModelContext<Self>,
1596 ) -> Task<Result<ModelHandle<Buffer>>> {
1597 let load_buffer = worktree.update(cx, |worktree, cx| {
1598 let worktree = worktree.as_local_mut().unwrap();
1599 worktree.load_buffer(path, cx)
1600 });
1601 cx.spawn(|this, mut cx| async move {
1602 let buffer = load_buffer.await?;
1603 this.update(&mut cx, |this, cx| this.register_buffer(&buffer, cx))?;
1604 Ok(buffer)
1605 })
1606 }
1607
1608 fn open_remote_buffer_internal(
1609 &mut self,
1610 path: &Arc<Path>,
1611 worktree: &ModelHandle<Worktree>,
1612 cx: &mut ModelContext<Self>,
1613 ) -> Task<Result<ModelHandle<Buffer>>> {
1614 let rpc = self.client.clone();
1615 let project_id = self.remote_id().unwrap();
1616 let remote_worktree_id = worktree.read(cx).id();
1617 let path = path.clone();
1618 let path_string = path.to_string_lossy().to_string();
1619 cx.spawn(|this, mut cx| async move {
1620 let response = rpc
1621 .request(proto::OpenBufferByPath {
1622 project_id,
1623 worktree_id: remote_worktree_id.to_proto(),
1624 path: path_string,
1625 })
1626 .await?;
1627 let buffer = response.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
1628 this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
1629 .await
1630 })
1631 }
1632
1633 /// LanguageServerName is owned, because it is inserted into a map
1634 fn open_local_buffer_via_lsp(
1635 &mut self,
1636 abs_path: lsp::Url,
1637 language_server_id: usize,
1638 language_server_name: LanguageServerName,
1639 cx: &mut ModelContext<Self>,
1640 ) -> Task<Result<ModelHandle<Buffer>>> {
1641 cx.spawn(|this, mut cx| async move {
1642 let abs_path = abs_path
1643 .to_file_path()
1644 .map_err(|_| anyhow!("can't convert URI to path"))?;
1645 let (worktree, relative_path) = if let Some(result) =
1646 this.read_with(&cx, |this, cx| this.find_local_worktree(&abs_path, cx))
1647 {
1648 result
1649 } else {
1650 let worktree = this
1651 .update(&mut cx, |this, cx| {
1652 this.create_local_worktree(&abs_path, false, cx)
1653 })
1654 .await?;
1655 this.update(&mut cx, |this, cx| {
1656 this.language_server_ids.insert(
1657 (worktree.read(cx).id(), language_server_name),
1658 language_server_id,
1659 );
1660 });
1661 (worktree, PathBuf::new())
1662 };
1663
1664 let project_path = ProjectPath {
1665 worktree_id: worktree.read_with(&cx, |worktree, _| worktree.id()),
1666 path: relative_path.into(),
1667 };
1668 this.update(&mut cx, |this, cx| this.open_buffer(project_path, cx))
1669 .await
1670 })
1671 }
1672
1673 pub fn open_buffer_by_id(
1674 &mut self,
1675 id: u64,
1676 cx: &mut ModelContext<Self>,
1677 ) -> Task<Result<ModelHandle<Buffer>>> {
1678 if let Some(buffer) = self.buffer_for_id(id, cx) {
1679 Task::ready(Ok(buffer))
1680 } else if self.is_local() {
1681 Task::ready(Err(anyhow!("buffer {} does not exist", id)))
1682 } else if let Some(project_id) = self.remote_id() {
1683 let request = self
1684 .client
1685 .request(proto::OpenBufferById { project_id, id });
1686 cx.spawn(|this, mut cx| async move {
1687 let buffer = request
1688 .await?
1689 .buffer
1690 .ok_or_else(|| anyhow!("invalid buffer"))?;
1691 this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
1692 .await
1693 })
1694 } else {
1695 Task::ready(Err(anyhow!("cannot open buffer while disconnected")))
1696 }
1697 }
1698
1699 pub fn save_buffer_as(
1700 &mut self,
1701 buffer: ModelHandle<Buffer>,
1702 abs_path: PathBuf,
1703 cx: &mut ModelContext<Project>,
1704 ) -> Task<Result<()>> {
1705 let worktree_task = self.find_or_create_local_worktree(&abs_path, true, cx);
1706 let old_path =
1707 File::from_dyn(buffer.read(cx).file()).and_then(|f| Some(f.as_local()?.abs_path(cx)));
1708 cx.spawn(|this, mut cx| async move {
1709 if let Some(old_path) = old_path {
1710 this.update(&mut cx, |this, cx| {
1711 this.unregister_buffer_from_language_server(&buffer, old_path, cx);
1712 });
1713 }
1714 let (worktree, path) = worktree_task.await?;
1715 worktree
1716 .update(&mut cx, |worktree, cx| {
1717 worktree
1718 .as_local_mut()
1719 .unwrap()
1720 .save_buffer_as(buffer.clone(), path, cx)
1721 })
1722 .await?;
1723 this.update(&mut cx, |this, cx| {
1724 this.assign_language_to_buffer(&buffer, cx);
1725 this.register_buffer_with_language_server(&buffer, cx);
1726 });
1727 Ok(())
1728 })
1729 }
1730
1731 pub fn get_open_buffer(
1732 &mut self,
1733 path: &ProjectPath,
1734 cx: &mut ModelContext<Self>,
1735 ) -> Option<ModelHandle<Buffer>> {
1736 let worktree = self.worktree_for_id(path.worktree_id, cx)?;
1737 self.opened_buffers.values().find_map(|buffer| {
1738 let buffer = buffer.upgrade(cx)?;
1739 let file = File::from_dyn(buffer.read(cx).file())?;
1740 if file.worktree == worktree && file.path() == &path.path {
1741 Some(buffer)
1742 } else {
1743 None
1744 }
1745 })
1746 }
1747
1748 fn register_buffer(
1749 &mut self,
1750 buffer: &ModelHandle<Buffer>,
1751 cx: &mut ModelContext<Self>,
1752 ) -> Result<()> {
1753 let remote_id = buffer.read(cx).remote_id();
1754 let open_buffer = if self.is_remote() || self.is_shared() {
1755 OpenBuffer::Strong(buffer.clone())
1756 } else {
1757 OpenBuffer::Weak(buffer.downgrade())
1758 };
1759
1760 match self.opened_buffers.insert(remote_id, open_buffer) {
1761 None => {}
1762 Some(OpenBuffer::Loading(operations)) => {
1763 buffer.update(cx, |buffer, cx| buffer.apply_ops(operations, cx))?
1764 }
1765 Some(OpenBuffer::Weak(existing_handle)) => {
1766 if existing_handle.upgrade(cx).is_some() {
1767 Err(anyhow!(
1768 "already registered buffer with remote id {}",
1769 remote_id
1770 ))?
1771 }
1772 }
1773 Some(OpenBuffer::Strong(_)) => Err(anyhow!(
1774 "already registered buffer with remote id {}",
1775 remote_id
1776 ))?,
1777 }
1778 cx.subscribe(buffer, |this, buffer, event, cx| {
1779 this.on_buffer_event(buffer, event, cx);
1780 })
1781 .detach();
1782
1783 self.assign_language_to_buffer(buffer, cx);
1784 self.register_buffer_with_language_server(buffer, cx);
1785 cx.observe_release(buffer, |this, buffer, cx| {
1786 if let Some(file) = File::from_dyn(buffer.file()) {
1787 if file.is_local() {
1788 let uri = lsp::Url::from_file_path(file.abs_path(cx)).unwrap();
1789 if let Some((_, server)) = this.language_server_for_buffer(buffer, cx) {
1790 server
1791 .notify::<lsp::notification::DidCloseTextDocument>(
1792 lsp::DidCloseTextDocumentParams {
1793 text_document: lsp::TextDocumentIdentifier::new(uri.clone()),
1794 },
1795 )
1796 .log_err();
1797 }
1798 }
1799 }
1800 })
1801 .detach();
1802
1803 Ok(())
1804 }
1805
1806 fn register_buffer_with_language_server(
1807 &mut self,
1808 buffer_handle: &ModelHandle<Buffer>,
1809 cx: &mut ModelContext<'_, Self>,
1810 ) {
1811 let buffer = buffer_handle.read(cx);
1812 let buffer_id = buffer.remote_id();
1813 if let Some(file) = File::from_dyn(buffer.file()) {
1814 if file.is_local() {
1815 let uri = lsp::Url::from_file_path(file.abs_path(cx)).unwrap();
1816 let initial_snapshot = buffer.text_snapshot();
1817
1818 let mut language_server = None;
1819 let mut language_id = None;
1820 if let Some(language) = buffer.language() {
1821 let worktree_id = file.worktree_id(cx);
1822 if let Some(adapter) = language.lsp_adapter() {
1823 language_id = adapter.id_for_language.clone();
1824 language_server = self
1825 .language_server_ids
1826 .get(&(worktree_id, adapter.name.clone()))
1827 .and_then(|id| self.language_servers.get(&id))
1828 .and_then(|server_state| {
1829 if let LanguageServerState::Running { server, .. } = server_state {
1830 Some(server.clone())
1831 } else {
1832 None
1833 }
1834 });
1835 }
1836 }
1837
1838 if let Some(local_worktree) = file.worktree.read(cx).as_local() {
1839 if let Some(diagnostics) = local_worktree.diagnostics_for_path(file.path()) {
1840 self.update_buffer_diagnostics(&buffer_handle, diagnostics, None, cx)
1841 .log_err();
1842 }
1843 }
1844
1845 if let Some(server) = language_server {
1846 server
1847 .notify::<lsp::notification::DidOpenTextDocument>(
1848 lsp::DidOpenTextDocumentParams {
1849 text_document: lsp::TextDocumentItem::new(
1850 uri,
1851 language_id.unwrap_or_default(),
1852 0,
1853 initial_snapshot.text(),
1854 ),
1855 }
1856 .clone(),
1857 )
1858 .log_err();
1859 buffer_handle.update(cx, |buffer, cx| {
1860 buffer.set_completion_triggers(
1861 server
1862 .capabilities()
1863 .completion_provider
1864 .as_ref()
1865 .and_then(|provider| provider.trigger_characters.clone())
1866 .unwrap_or(Vec::new()),
1867 cx,
1868 )
1869 });
1870 self.buffer_snapshots
1871 .insert(buffer_id, vec![(0, initial_snapshot)]);
1872 }
1873 }
1874 }
1875 }
1876
1877 fn unregister_buffer_from_language_server(
1878 &mut self,
1879 buffer: &ModelHandle<Buffer>,
1880 old_path: PathBuf,
1881 cx: &mut ModelContext<Self>,
1882 ) {
1883 buffer.update(cx, |buffer, cx| {
1884 buffer.update_diagnostics(Default::default(), cx);
1885 self.buffer_snapshots.remove(&buffer.remote_id());
1886 if let Some((_, language_server)) = self.language_server_for_buffer(buffer, cx) {
1887 language_server
1888 .notify::<lsp::notification::DidCloseTextDocument>(
1889 lsp::DidCloseTextDocumentParams {
1890 text_document: lsp::TextDocumentIdentifier::new(
1891 lsp::Url::from_file_path(old_path).unwrap(),
1892 ),
1893 },
1894 )
1895 .log_err();
1896 }
1897 });
1898 }
1899
1900 fn on_buffer_event(
1901 &mut self,
1902 buffer: ModelHandle<Buffer>,
1903 event: &BufferEvent,
1904 cx: &mut ModelContext<'_, Self>,
1905 ) -> Option<()> {
1906 match event {
1907 BufferEvent::Operation(operation) => {
1908 if let Some(project_id) = self.shared_remote_id() {
1909 let request = self.client.request(proto::UpdateBuffer {
1910 project_id,
1911 buffer_id: buffer.read(cx).remote_id(),
1912 operations: vec![language::proto::serialize_operation(&operation)],
1913 });
1914 cx.background().spawn(request).detach_and_log_err(cx);
1915 } else if let Some(project_id) = self.remote_id() {
1916 let _ = self
1917 .client
1918 .send(proto::RegisterProjectActivity { project_id });
1919 }
1920 }
1921 BufferEvent::Edited { .. } => {
1922 let language_server = self
1923 .language_server_for_buffer(buffer.read(cx), cx)
1924 .map(|(_, server)| server.clone())?;
1925 let buffer = buffer.read(cx);
1926 let file = File::from_dyn(buffer.file())?;
1927 let abs_path = file.as_local()?.abs_path(cx);
1928 let uri = lsp::Url::from_file_path(abs_path).unwrap();
1929 let buffer_snapshots = self.buffer_snapshots.get_mut(&buffer.remote_id())?;
1930 let (version, prev_snapshot) = buffer_snapshots.last()?;
1931 let next_snapshot = buffer.text_snapshot();
1932 let next_version = version + 1;
1933
1934 let content_changes = buffer
1935 .edits_since::<(PointUtf16, usize)>(prev_snapshot.version())
1936 .map(|edit| {
1937 let edit_start = edit.new.start.0;
1938 let edit_end = edit_start + (edit.old.end.0 - edit.old.start.0);
1939 let new_text = next_snapshot
1940 .text_for_range(edit.new.start.1..edit.new.end.1)
1941 .collect();
1942 lsp::TextDocumentContentChangeEvent {
1943 range: Some(lsp::Range::new(
1944 point_to_lsp(edit_start),
1945 point_to_lsp(edit_end),
1946 )),
1947 range_length: None,
1948 text: new_text,
1949 }
1950 })
1951 .collect();
1952
1953 buffer_snapshots.push((next_version, next_snapshot));
1954
1955 language_server
1956 .notify::<lsp::notification::DidChangeTextDocument>(
1957 lsp::DidChangeTextDocumentParams {
1958 text_document: lsp::VersionedTextDocumentIdentifier::new(
1959 uri,
1960 next_version,
1961 ),
1962 content_changes,
1963 },
1964 )
1965 .log_err();
1966 }
1967 BufferEvent::Saved => {
1968 let file = File::from_dyn(buffer.read(cx).file())?;
1969 let worktree_id = file.worktree_id(cx);
1970 let abs_path = file.as_local()?.abs_path(cx);
1971 let text_document = lsp::TextDocumentIdentifier {
1972 uri: lsp::Url::from_file_path(abs_path).unwrap(),
1973 };
1974
1975 for (_, server) in self.language_servers_for_worktree(worktree_id) {
1976 server
1977 .notify::<lsp::notification::DidSaveTextDocument>(
1978 lsp::DidSaveTextDocumentParams {
1979 text_document: text_document.clone(),
1980 text: None,
1981 },
1982 )
1983 .log_err();
1984 }
1985
1986 // After saving a buffer, simulate disk-based diagnostics being finished for languages
1987 // that don't support a disk-based progress token.
1988 let (lsp_adapter, language_server) =
1989 self.language_server_for_buffer(buffer.read(cx), cx)?;
1990 if lsp_adapter.disk_based_diagnostics_progress_token.is_none() {
1991 let server_id = language_server.server_id();
1992 self.disk_based_diagnostics_finished(server_id, cx);
1993 self.broadcast_language_server_update(
1994 server_id,
1995 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1996 proto::LspDiskBasedDiagnosticsUpdated {},
1997 ),
1998 );
1999 }
2000 }
2001 _ => {}
2002 }
2003
2004 None
2005 }
2006
2007 fn language_servers_for_worktree(
2008 &self,
2009 worktree_id: WorktreeId,
2010 ) -> impl Iterator<Item = (&Arc<LspAdapter>, &Arc<LanguageServer>)> {
2011 self.language_server_ids
2012 .iter()
2013 .filter_map(move |((language_server_worktree_id, _), id)| {
2014 if *language_server_worktree_id == worktree_id {
2015 if let Some(LanguageServerState::Running { adapter, server }) =
2016 self.language_servers.get(&id)
2017 {
2018 return Some((adapter, server));
2019 }
2020 }
2021 None
2022 })
2023 }
2024
2025 fn maintain_buffer_languages(
2026 languages: &LanguageRegistry,
2027 cx: &mut ModelContext<Project>,
2028 ) -> Task<()> {
2029 let mut subscription = languages.subscribe();
2030 cx.spawn_weak(|project, mut cx| async move {
2031 while let Some(()) = subscription.next().await {
2032 if let Some(project) = project.upgrade(&cx) {
2033 project.update(&mut cx, |project, cx| {
2034 let mut buffers_without_language = Vec::new();
2035 for buffer in project.opened_buffers.values() {
2036 if let Some(buffer) = buffer.upgrade(cx) {
2037 if buffer.read(cx).language().is_none() {
2038 buffers_without_language.push(buffer);
2039 }
2040 }
2041 }
2042
2043 for buffer in buffers_without_language {
2044 project.assign_language_to_buffer(&buffer, cx);
2045 project.register_buffer_with_language_server(&buffer, cx);
2046 dbg!(buffer.read(cx).language().map(|x| x.name()));
2047 }
2048 });
2049 }
2050 }
2051 })
2052 }
2053
2054 fn assign_language_to_buffer(
2055 &mut self,
2056 buffer: &ModelHandle<Buffer>,
2057 cx: &mut ModelContext<Self>,
2058 ) -> Option<()> {
2059 // If the buffer has a language, set it and start the language server if we haven't already.
2060 let full_path = buffer.read(cx).file()?.full_path(cx);
2061 let language = self.languages.select_language(&full_path)?;
2062 buffer.update(cx, |buffer, cx| {
2063 buffer.set_language(Some(language.clone()), cx);
2064 });
2065
2066 let file = File::from_dyn(buffer.read(cx).file())?;
2067 let worktree = file.worktree.read(cx).as_local()?;
2068 let worktree_id = worktree.id();
2069 let worktree_abs_path = worktree.abs_path().clone();
2070 self.start_language_server(worktree_id, worktree_abs_path, language, cx);
2071
2072 None
2073 }
2074
2075 fn start_language_server(
2076 &mut self,
2077 worktree_id: WorktreeId,
2078 worktree_path: Arc<Path>,
2079 language: Arc<Language>,
2080 cx: &mut ModelContext<Self>,
2081 ) {
2082 if !cx
2083 .global::<Settings>()
2084 .enable_language_server(Some(&language.name()))
2085 {
2086 return;
2087 }
2088
2089 let adapter = if let Some(adapter) = language.lsp_adapter() {
2090 adapter
2091 } else {
2092 return;
2093 };
2094 let key = (worktree_id, adapter.name.clone());
2095
2096 self.language_server_ids
2097 .entry(key.clone())
2098 .or_insert_with(|| {
2099 let server_id = post_inc(&mut self.next_language_server_id);
2100 let language_server = self.languages.start_language_server(
2101 server_id,
2102 language.clone(),
2103 worktree_path,
2104 self.client.http_client(),
2105 cx,
2106 );
2107 self.language_servers.insert(
2108 server_id,
2109 LanguageServerState::Starting(cx.spawn_weak(|this, mut cx| async move {
2110 let language_server = language_server?.await.log_err()?;
2111 let language_server = language_server
2112 .initialize(adapter.initialization_options.clone())
2113 .await
2114 .log_err()?;
2115 let this = this.upgrade(&cx)?;
2116
2117 language_server
2118 .on_notification::<lsp::notification::PublishDiagnostics, _>({
2119 let this = this.downgrade();
2120 let adapter = adapter.clone();
2121 move |params, mut cx| {
2122 if let Some(this) = this.upgrade(&cx) {
2123 // cx.spawn(|cx| {
2124 // this.update(&mut cx, |this, cx| {
2125 // this.on_lsp_diagnostics_published(
2126 // server_id, params, adapter, cx,
2127 // )
2128 // })
2129 // })
2130 // .detach();
2131 this.update(&mut cx, |this, cx| {
2132 // TODO(isaac): remove block on
2133 smol::block_on(this.on_lsp_diagnostics_published(
2134 server_id, params, &adapter, cx,
2135 ));
2136 });
2137 }
2138 }
2139 })
2140 .detach();
2141
2142 language_server
2143 .on_request::<lsp::request::WorkspaceConfiguration, _, _>({
2144 let settings = this.read_with(&cx, |this, _| {
2145 this.language_server_settings.clone()
2146 });
2147 move |params, _| {
2148 let settings = settings.lock().clone();
2149 async move {
2150 Ok(params
2151 .items
2152 .into_iter()
2153 .map(|item| {
2154 if let Some(section) = &item.section {
2155 settings
2156 .get(section)
2157 .cloned()
2158 .unwrap_or(serde_json::Value::Null)
2159 } else {
2160 settings.clone()
2161 }
2162 })
2163 .collect())
2164 }
2165 }
2166 })
2167 .detach();
2168
2169 // Even though we don't have handling for these requests, respond to them to
2170 // avoid stalling any language server like `gopls` which waits for a response
2171 // to these requests when initializing.
2172 language_server
2173 .on_request::<lsp::request::WorkDoneProgressCreate, _, _>({
2174 let this = this.downgrade();
2175 move |params, mut cx| async move {
2176 if let Some(this) = this.upgrade(&cx) {
2177 this.update(&mut cx, |this, _| {
2178 if let Some(status) =
2179 this.language_server_statuses.get_mut(&server_id)
2180 {
2181 if let lsp::NumberOrString::String(token) =
2182 params.token
2183 {
2184 status.progress_tokens.insert(token);
2185 }
2186 }
2187 });
2188 }
2189 Ok(())
2190 }
2191 })
2192 .detach();
2193 language_server
2194 .on_request::<lsp::request::RegisterCapability, _, _>(|_, _| async {
2195 Ok(())
2196 })
2197 .detach();
2198
2199 language_server
2200 .on_request::<lsp::request::ApplyWorkspaceEdit, _, _>({
2201 let this = this.downgrade();
2202 let adapter = adapter.clone();
2203 let language_server = language_server.clone();
2204 move |params, cx| {
2205 Self::on_lsp_workspace_edit(
2206 this,
2207 params,
2208 server_id,
2209 adapter.clone(),
2210 language_server.clone(),
2211 cx,
2212 )
2213 }
2214 })
2215 .detach();
2216
2217 let disk_based_diagnostics_progress_token =
2218 adapter.disk_based_diagnostics_progress_token.clone();
2219
2220 language_server
2221 .on_notification::<lsp::notification::Progress, _>({
2222 let this = this.downgrade();
2223 move |params, mut cx| {
2224 if let Some(this) = this.upgrade(&cx) {
2225 this.update(&mut cx, |this, cx| {
2226 this.on_lsp_progress(
2227 params,
2228 server_id,
2229 disk_based_diagnostics_progress_token.clone(),
2230 cx,
2231 );
2232 });
2233 }
2234 }
2235 })
2236 .detach();
2237
2238 this.update(&mut cx, |this, cx| {
2239 // If the language server for this key doesn't match the server id, don't store the
2240 // server. Which will cause it to be dropped, killing the process
2241 if this
2242 .language_server_ids
2243 .get(&key)
2244 .map(|id| id != &server_id)
2245 .unwrap_or(false)
2246 {
2247 return None;
2248 }
2249
2250 // Update language_servers collection with Running variant of LanguageServerState
2251 // indicating that the server is up and running and ready
2252 this.language_servers.insert(
2253 server_id,
2254 LanguageServerState::Running {
2255 adapter: adapter.clone(),
2256 server: language_server.clone(),
2257 },
2258 );
2259 this.language_server_statuses.insert(
2260 server_id,
2261 LanguageServerStatus {
2262 name: language_server.name().to_string(),
2263 pending_work: Default::default(),
2264 has_pending_diagnostic_updates: false,
2265 progress_tokens: Default::default(),
2266 },
2267 );
2268 language_server
2269 .notify::<lsp::notification::DidChangeConfiguration>(
2270 lsp::DidChangeConfigurationParams {
2271 settings: this.language_server_settings.lock().clone(),
2272 },
2273 )
2274 .ok();
2275
2276 if let Some(project_id) = this.shared_remote_id() {
2277 this.client
2278 .send(proto::StartLanguageServer {
2279 project_id,
2280 server: Some(proto::LanguageServer {
2281 id: server_id as u64,
2282 name: language_server.name().to_string(),
2283 }),
2284 })
2285 .log_err();
2286 }
2287
2288 // Tell the language server about every open buffer in the worktree that matches the language.
2289 for buffer in this.opened_buffers.values() {
2290 if let Some(buffer_handle) = buffer.upgrade(cx) {
2291 let buffer = buffer_handle.read(cx);
2292 let file = if let Some(file) = File::from_dyn(buffer.file()) {
2293 file
2294 } else {
2295 continue;
2296 };
2297 let language = if let Some(language) = buffer.language() {
2298 language
2299 } else {
2300 continue;
2301 };
2302 if file.worktree.read(cx).id() != key.0
2303 || language.lsp_adapter().map(|a| a.name.clone())
2304 != Some(key.1.clone())
2305 {
2306 continue;
2307 }
2308
2309 let file = file.as_local()?;
2310 let versions = this
2311 .buffer_snapshots
2312 .entry(buffer.remote_id())
2313 .or_insert_with(|| vec![(0, buffer.text_snapshot())]);
2314 let (version, initial_snapshot) = versions.last().unwrap();
2315 let uri = lsp::Url::from_file_path(file.abs_path(cx)).unwrap();
2316 language_server
2317 .notify::<lsp::notification::DidOpenTextDocument>(
2318 lsp::DidOpenTextDocumentParams {
2319 text_document: lsp::TextDocumentItem::new(
2320 uri,
2321 adapter
2322 .id_for_language
2323 .clone()
2324 .unwrap_or_default(),
2325 *version,
2326 initial_snapshot.text(),
2327 ),
2328 },
2329 )
2330 .log_err()?;
2331 buffer_handle.update(cx, |buffer, cx| {
2332 buffer.set_completion_triggers(
2333 language_server
2334 .capabilities()
2335 .completion_provider
2336 .as_ref()
2337 .and_then(|provider| {
2338 provider.trigger_characters.clone()
2339 })
2340 .unwrap_or(Vec::new()),
2341 cx,
2342 )
2343 });
2344 }
2345 }
2346
2347 cx.notify();
2348 Some(language_server)
2349 })
2350 })),
2351 );
2352
2353 server_id
2354 });
2355 }
2356
2357 // Returns a list of all of the worktrees which no longer have a language server and the root path
2358 // for the stopped server
2359 fn stop_language_server(
2360 &mut self,
2361 worktree_id: WorktreeId,
2362 adapter_name: LanguageServerName,
2363 cx: &mut ModelContext<Self>,
2364 ) -> Task<(Option<PathBuf>, Vec<WorktreeId>)> {
2365 let key = (worktree_id, adapter_name);
2366 if let Some(server_id) = self.language_server_ids.remove(&key) {
2367 // Remove other entries for this language server as well
2368 let mut orphaned_worktrees = vec![worktree_id];
2369 let other_keys = self.language_server_ids.keys().cloned().collect::<Vec<_>>();
2370 for other_key in other_keys {
2371 if self.language_server_ids.get(&other_key) == Some(&server_id) {
2372 self.language_server_ids.remove(&other_key);
2373 orphaned_worktrees.push(other_key.0);
2374 }
2375 }
2376
2377 self.language_server_statuses.remove(&server_id);
2378 cx.notify();
2379
2380 let server_state = self.language_servers.remove(&server_id);
2381 cx.spawn_weak(|this, mut cx| async move {
2382 let mut root_path = None;
2383
2384 let server = match server_state {
2385 Some(LanguageServerState::Starting(started_language_server)) => {
2386 started_language_server.await
2387 }
2388 Some(LanguageServerState::Running { server, .. }) => Some(server),
2389 None => None,
2390 };
2391
2392 if let Some(server) = server {
2393 root_path = Some(server.root_path().clone());
2394 if let Some(shutdown) = server.shutdown() {
2395 shutdown.await;
2396 }
2397 }
2398
2399 if let Some(this) = this.upgrade(&cx) {
2400 this.update(&mut cx, |this, cx| {
2401 this.language_server_statuses.remove(&server_id);
2402 cx.notify();
2403 });
2404 }
2405
2406 (root_path, orphaned_worktrees)
2407 })
2408 } else {
2409 Task::ready((None, Vec::new()))
2410 }
2411 }
2412
2413 pub fn restart_language_servers_for_buffers(
2414 &mut self,
2415 buffers: impl IntoIterator<Item = ModelHandle<Buffer>>,
2416 cx: &mut ModelContext<Self>,
2417 ) -> Option<()> {
2418 let language_server_lookup_info: HashSet<(WorktreeId, Arc<Path>, PathBuf)> = buffers
2419 .into_iter()
2420 .filter_map(|buffer| {
2421 let file = File::from_dyn(buffer.read(cx).file())?;
2422 let worktree = file.worktree.read(cx).as_local()?;
2423 let worktree_id = worktree.id();
2424 let worktree_abs_path = worktree.abs_path().clone();
2425 let full_path = file.full_path(cx);
2426 Some((worktree_id, worktree_abs_path, full_path))
2427 })
2428 .collect();
2429 for (worktree_id, worktree_abs_path, full_path) in language_server_lookup_info {
2430 let language = self.languages.select_language(&full_path)?;
2431 self.restart_language_server(worktree_id, worktree_abs_path, language, cx);
2432 }
2433
2434 None
2435 }
2436
2437 fn restart_language_server(
2438 &mut self,
2439 worktree_id: WorktreeId,
2440 fallback_path: Arc<Path>,
2441 language: Arc<Language>,
2442 cx: &mut ModelContext<Self>,
2443 ) {
2444 let adapter = if let Some(adapter) = language.lsp_adapter() {
2445 adapter
2446 } else {
2447 return;
2448 };
2449
2450 let server_name = adapter.name.clone();
2451 let stop = self.stop_language_server(worktree_id, server_name.clone(), cx);
2452 cx.spawn_weak(|this, mut cx| async move {
2453 let (original_root_path, orphaned_worktrees) = stop.await;
2454 if let Some(this) = this.upgrade(&cx) {
2455 this.update(&mut cx, |this, cx| {
2456 // Attempt to restart using original server path. Fallback to passed in
2457 // path if we could not retrieve the root path
2458 let root_path = original_root_path
2459 .map(|path_buf| Arc::from(path_buf.as_path()))
2460 .unwrap_or(fallback_path);
2461
2462 this.start_language_server(worktree_id, root_path, language, cx);
2463
2464 // Lookup new server id and set it for each of the orphaned worktrees
2465 if let Some(new_server_id) = this
2466 .language_server_ids
2467 .get(&(worktree_id, server_name.clone()))
2468 .cloned()
2469 {
2470 for orphaned_worktree in orphaned_worktrees {
2471 this.language_server_ids.insert(
2472 (orphaned_worktree, server_name.clone()),
2473 new_server_id.clone(),
2474 );
2475 }
2476 }
2477 });
2478 }
2479 })
2480 .detach();
2481 }
2482
2483 async fn on_lsp_diagnostics_published(
2484 &mut self,
2485 server_id: usize,
2486 mut params: lsp::PublishDiagnosticsParams,
2487 adapter: &Arc<LspAdapter>,
2488 cx: &mut ModelContext<'_, Self>,
2489 ) {
2490 adapter.process_diagnostics(&mut params).await;
2491 self.update_diagnostics(
2492 server_id,
2493 params,
2494 &adapter.disk_based_diagnostic_sources,
2495 cx,
2496 )
2497 .log_err();
2498 }
2499
2500 fn on_lsp_progress(
2501 &mut self,
2502 progress: lsp::ProgressParams,
2503 server_id: usize,
2504 disk_based_diagnostics_progress_token: Option<String>,
2505 cx: &mut ModelContext<Self>,
2506 ) {
2507 let token = match progress.token {
2508 lsp::NumberOrString::String(token) => token,
2509 lsp::NumberOrString::Number(token) => {
2510 log::info!("skipping numeric progress token {}", token);
2511 return;
2512 }
2513 };
2514 let progress = match progress.value {
2515 lsp::ProgressParamsValue::WorkDone(value) => value,
2516 };
2517 let language_server_status =
2518 if let Some(status) = self.language_server_statuses.get_mut(&server_id) {
2519 status
2520 } else {
2521 return;
2522 };
2523
2524 if !language_server_status.progress_tokens.contains(&token) {
2525 return;
2526 }
2527
2528 let same_token =
2529 Some(token.as_ref()) == disk_based_diagnostics_progress_token.as_ref().map(|x| &**x);
2530
2531 match progress {
2532 lsp::WorkDoneProgress::Begin(report) => {
2533 if same_token {
2534 language_server_status.has_pending_diagnostic_updates = true;
2535 self.disk_based_diagnostics_started(server_id, cx);
2536 self.broadcast_language_server_update(
2537 server_id,
2538 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdating(
2539 proto::LspDiskBasedDiagnosticsUpdating {},
2540 ),
2541 );
2542 } else {
2543 self.on_lsp_work_start(
2544 server_id,
2545 token.clone(),
2546 LanguageServerProgress {
2547 message: report.message.clone(),
2548 percentage: report.percentage.map(|p| p as usize),
2549 last_update_at: Instant::now(),
2550 },
2551 cx,
2552 );
2553 self.broadcast_language_server_update(
2554 server_id,
2555 proto::update_language_server::Variant::WorkStart(proto::LspWorkStart {
2556 token,
2557 message: report.message,
2558 percentage: report.percentage.map(|p| p as u32),
2559 }),
2560 );
2561 }
2562 }
2563 lsp::WorkDoneProgress::Report(report) => {
2564 if !same_token {
2565 self.on_lsp_work_progress(
2566 server_id,
2567 token.clone(),
2568 LanguageServerProgress {
2569 message: report.message.clone(),
2570 percentage: report.percentage.map(|p| p as usize),
2571 last_update_at: Instant::now(),
2572 },
2573 cx,
2574 );
2575 self.broadcast_language_server_update(
2576 server_id,
2577 proto::update_language_server::Variant::WorkProgress(
2578 proto::LspWorkProgress {
2579 token,
2580 message: report.message,
2581 percentage: report.percentage.map(|p| p as u32),
2582 },
2583 ),
2584 );
2585 }
2586 }
2587 lsp::WorkDoneProgress::End(_) => {
2588 language_server_status.progress_tokens.remove(&token);
2589
2590 if same_token {
2591 language_server_status.has_pending_diagnostic_updates = false;
2592 self.disk_based_diagnostics_finished(server_id, cx);
2593 self.broadcast_language_server_update(
2594 server_id,
2595 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
2596 proto::LspDiskBasedDiagnosticsUpdated {},
2597 ),
2598 );
2599 } else {
2600 self.on_lsp_work_end(server_id, token.clone(), cx);
2601 self.broadcast_language_server_update(
2602 server_id,
2603 proto::update_language_server::Variant::WorkEnd(proto::LspWorkEnd {
2604 token,
2605 }),
2606 );
2607 }
2608 }
2609 }
2610 }
2611
2612 fn on_lsp_work_start(
2613 &mut self,
2614 language_server_id: usize,
2615 token: String,
2616 progress: LanguageServerProgress,
2617 cx: &mut ModelContext<Self>,
2618 ) {
2619 if let Some(status) = self.language_server_statuses.get_mut(&language_server_id) {
2620 status.pending_work.insert(token, progress);
2621 cx.notify();
2622 }
2623 }
2624
2625 fn on_lsp_work_progress(
2626 &mut self,
2627 language_server_id: usize,
2628 token: String,
2629 progress: LanguageServerProgress,
2630 cx: &mut ModelContext<Self>,
2631 ) {
2632 if let Some(status) = self.language_server_statuses.get_mut(&language_server_id) {
2633 let entry = status
2634 .pending_work
2635 .entry(token)
2636 .or_insert(LanguageServerProgress {
2637 message: Default::default(),
2638 percentage: Default::default(),
2639 last_update_at: progress.last_update_at,
2640 });
2641 if progress.message.is_some() {
2642 entry.message = progress.message;
2643 }
2644 if progress.percentage.is_some() {
2645 entry.percentage = progress.percentage;
2646 }
2647 entry.last_update_at = progress.last_update_at;
2648 cx.notify();
2649 }
2650 }
2651
2652 fn on_lsp_work_end(
2653 &mut self,
2654 language_server_id: usize,
2655 token: String,
2656 cx: &mut ModelContext<Self>,
2657 ) {
2658 if let Some(status) = self.language_server_statuses.get_mut(&language_server_id) {
2659 status.pending_work.remove(&token);
2660 cx.notify();
2661 }
2662 }
2663
2664 async fn on_lsp_workspace_edit(
2665 this: WeakModelHandle<Self>,
2666 params: lsp::ApplyWorkspaceEditParams,
2667 server_id: usize,
2668 adapter: Arc<LspAdapter>,
2669 language_server: Arc<LanguageServer>,
2670 mut cx: AsyncAppContext,
2671 ) -> Result<lsp::ApplyWorkspaceEditResponse> {
2672 let this = this
2673 .upgrade(&cx)
2674 .ok_or_else(|| anyhow!("project project closed"))?;
2675 let transaction = Self::deserialize_workspace_edit(
2676 this.clone(),
2677 params.edit,
2678 true,
2679 adapter.clone(),
2680 language_server.clone(),
2681 &mut cx,
2682 )
2683 .await
2684 .log_err();
2685 this.update(&mut cx, |this, _| {
2686 if let Some(transaction) = transaction {
2687 this.last_workspace_edits_by_language_server
2688 .insert(server_id, transaction);
2689 }
2690 });
2691 Ok(lsp::ApplyWorkspaceEditResponse {
2692 applied: true,
2693 failed_change: None,
2694 failure_reason: None,
2695 })
2696 }
2697
2698 fn broadcast_language_server_update(
2699 &self,
2700 language_server_id: usize,
2701 event: proto::update_language_server::Variant,
2702 ) {
2703 if let Some(project_id) = self.shared_remote_id() {
2704 self.client
2705 .send(proto::UpdateLanguageServer {
2706 project_id,
2707 language_server_id: language_server_id as u64,
2708 variant: Some(event),
2709 })
2710 .log_err();
2711 }
2712 }
2713
2714 pub fn set_language_server_settings(&mut self, settings: serde_json::Value) {
2715 for server_state in self.language_servers.values() {
2716 if let LanguageServerState::Running { server, .. } = server_state {
2717 server
2718 .notify::<lsp::notification::DidChangeConfiguration>(
2719 lsp::DidChangeConfigurationParams {
2720 settings: settings.clone(),
2721 },
2722 )
2723 .ok();
2724 }
2725 }
2726 *self.language_server_settings.lock() = settings;
2727 }
2728
2729 pub fn language_server_statuses(
2730 &self,
2731 ) -> impl DoubleEndedIterator<Item = &LanguageServerStatus> {
2732 self.language_server_statuses.values()
2733 }
2734
2735 pub fn update_diagnostics(
2736 &mut self,
2737 language_server_id: usize,
2738 params: lsp::PublishDiagnosticsParams,
2739 disk_based_sources: &[String],
2740 cx: &mut ModelContext<Self>,
2741 ) -> Result<()> {
2742 let abs_path = params
2743 .uri
2744 .to_file_path()
2745 .map_err(|_| anyhow!("URI is not a file"))?;
2746 let mut diagnostics = Vec::default();
2747 let mut primary_diagnostic_group_ids = HashMap::default();
2748 let mut sources_by_group_id = HashMap::default();
2749 let mut supporting_diagnostics = HashMap::default();
2750 for diagnostic in ¶ms.diagnostics {
2751 let source = diagnostic.source.as_ref();
2752 let code = diagnostic.code.as_ref().map(|code| match code {
2753 lsp::NumberOrString::Number(code) => code.to_string(),
2754 lsp::NumberOrString::String(code) => code.clone(),
2755 });
2756 let range = range_from_lsp(diagnostic.range);
2757 let is_supporting = diagnostic
2758 .related_information
2759 .as_ref()
2760 .map_or(false, |infos| {
2761 infos.iter().any(|info| {
2762 primary_diagnostic_group_ids.contains_key(&(
2763 source,
2764 code.clone(),
2765 range_from_lsp(info.location.range),
2766 ))
2767 })
2768 });
2769
2770 let is_unnecessary = diagnostic.tags.as_ref().map_or(false, |tags| {
2771 tags.iter().any(|tag| *tag == DiagnosticTag::UNNECESSARY)
2772 });
2773
2774 if is_supporting {
2775 supporting_diagnostics.insert(
2776 (source, code.clone(), range),
2777 (diagnostic.severity, is_unnecessary),
2778 );
2779 } else {
2780 let group_id = post_inc(&mut self.next_diagnostic_group_id);
2781 let is_disk_based =
2782 source.map_or(false, |source| disk_based_sources.contains(&source));
2783
2784 sources_by_group_id.insert(group_id, source);
2785 primary_diagnostic_group_ids
2786 .insert((source, code.clone(), range.clone()), group_id);
2787
2788 diagnostics.push(DiagnosticEntry {
2789 range,
2790 diagnostic: Diagnostic {
2791 code: code.clone(),
2792 severity: diagnostic.severity.unwrap_or(DiagnosticSeverity::ERROR),
2793 message: diagnostic.message.clone(),
2794 group_id,
2795 is_primary: true,
2796 is_valid: true,
2797 is_disk_based,
2798 is_unnecessary,
2799 },
2800 });
2801 if let Some(infos) = &diagnostic.related_information {
2802 for info in infos {
2803 if info.location.uri == params.uri && !info.message.is_empty() {
2804 let range = range_from_lsp(info.location.range);
2805 diagnostics.push(DiagnosticEntry {
2806 range,
2807 diagnostic: Diagnostic {
2808 code: code.clone(),
2809 severity: DiagnosticSeverity::INFORMATION,
2810 message: info.message.clone(),
2811 group_id,
2812 is_primary: false,
2813 is_valid: true,
2814 is_disk_based,
2815 is_unnecessary: false,
2816 },
2817 });
2818 }
2819 }
2820 }
2821 }
2822 }
2823
2824 for entry in &mut diagnostics {
2825 let diagnostic = &mut entry.diagnostic;
2826 if !diagnostic.is_primary {
2827 let source = *sources_by_group_id.get(&diagnostic.group_id).unwrap();
2828 if let Some(&(severity, is_unnecessary)) = supporting_diagnostics.get(&(
2829 source,
2830 diagnostic.code.clone(),
2831 entry.range.clone(),
2832 )) {
2833 if let Some(severity) = severity {
2834 diagnostic.severity = severity;
2835 }
2836 diagnostic.is_unnecessary = is_unnecessary;
2837 }
2838 }
2839 }
2840
2841 self.update_diagnostic_entries(
2842 language_server_id,
2843 abs_path,
2844 params.version,
2845 diagnostics,
2846 cx,
2847 )?;
2848 Ok(())
2849 }
2850
2851 pub fn update_diagnostic_entries(
2852 &mut self,
2853 language_server_id: usize,
2854 abs_path: PathBuf,
2855 version: Option<i32>,
2856 diagnostics: Vec<DiagnosticEntry<PointUtf16>>,
2857 cx: &mut ModelContext<Project>,
2858 ) -> Result<(), anyhow::Error> {
2859 let (worktree, relative_path) = self
2860 .find_local_worktree(&abs_path, cx)
2861 .ok_or_else(|| anyhow!("no worktree found for diagnostics"))?;
2862
2863 let project_path = ProjectPath {
2864 worktree_id: worktree.read(cx).id(),
2865 path: relative_path.into(),
2866 };
2867 if let Some(buffer) = self.get_open_buffer(&project_path, cx) {
2868 self.update_buffer_diagnostics(&buffer, diagnostics.clone(), version, cx)?;
2869 }
2870
2871 let updated = worktree.update(cx, |worktree, cx| {
2872 worktree
2873 .as_local_mut()
2874 .ok_or_else(|| anyhow!("not a local worktree"))?
2875 .update_diagnostics(
2876 language_server_id,
2877 project_path.path.clone(),
2878 diagnostics,
2879 cx,
2880 )
2881 })?;
2882 if updated {
2883 cx.emit(Event::DiagnosticsUpdated {
2884 language_server_id,
2885 path: project_path,
2886 });
2887 }
2888 Ok(())
2889 }
2890
2891 fn update_buffer_diagnostics(
2892 &mut self,
2893 buffer: &ModelHandle<Buffer>,
2894 mut diagnostics: Vec<DiagnosticEntry<PointUtf16>>,
2895 version: Option<i32>,
2896 cx: &mut ModelContext<Self>,
2897 ) -> Result<()> {
2898 fn compare_diagnostics(a: &Diagnostic, b: &Diagnostic) -> Ordering {
2899 Ordering::Equal
2900 .then_with(|| b.is_primary.cmp(&a.is_primary))
2901 .then_with(|| a.is_disk_based.cmp(&b.is_disk_based))
2902 .then_with(|| a.severity.cmp(&b.severity))
2903 .then_with(|| a.message.cmp(&b.message))
2904 }
2905
2906 let snapshot = self.buffer_snapshot_for_lsp_version(buffer, version, cx)?;
2907
2908 diagnostics.sort_unstable_by(|a, b| {
2909 Ordering::Equal
2910 .then_with(|| a.range.start.cmp(&b.range.start))
2911 .then_with(|| b.range.end.cmp(&a.range.end))
2912 .then_with(|| compare_diagnostics(&a.diagnostic, &b.diagnostic))
2913 });
2914
2915 let mut sanitized_diagnostics = Vec::new();
2916 let edits_since_save = Patch::new(
2917 snapshot
2918 .edits_since::<PointUtf16>(buffer.read(cx).saved_version())
2919 .collect(),
2920 );
2921 for entry in diagnostics {
2922 let start;
2923 let end;
2924 if entry.diagnostic.is_disk_based {
2925 // Some diagnostics are based on files on disk instead of buffers'
2926 // current contents. Adjust these diagnostics' ranges to reflect
2927 // any unsaved edits.
2928 start = edits_since_save.old_to_new(entry.range.start);
2929 end = edits_since_save.old_to_new(entry.range.end);
2930 } else {
2931 start = entry.range.start;
2932 end = entry.range.end;
2933 }
2934
2935 let mut range = snapshot.clip_point_utf16(start, Bias::Left)
2936 ..snapshot.clip_point_utf16(end, Bias::Right);
2937
2938 // Expand empty ranges by one character
2939 if range.start == range.end {
2940 range.end.column += 1;
2941 range.end = snapshot.clip_point_utf16(range.end, Bias::Right);
2942 if range.start == range.end && range.end.column > 0 {
2943 range.start.column -= 1;
2944 range.start = snapshot.clip_point_utf16(range.start, Bias::Left);
2945 }
2946 }
2947
2948 sanitized_diagnostics.push(DiagnosticEntry {
2949 range,
2950 diagnostic: entry.diagnostic,
2951 });
2952 }
2953 drop(edits_since_save);
2954
2955 let set = DiagnosticSet::new(sanitized_diagnostics, &snapshot);
2956 buffer.update(cx, |buffer, cx| buffer.update_diagnostics(set, cx));
2957 Ok(())
2958 }
2959
2960 pub fn reload_buffers(
2961 &self,
2962 buffers: HashSet<ModelHandle<Buffer>>,
2963 push_to_history: bool,
2964 cx: &mut ModelContext<Self>,
2965 ) -> Task<Result<ProjectTransaction>> {
2966 let mut local_buffers = Vec::new();
2967 let mut remote_buffers = None;
2968 for buffer_handle in buffers {
2969 let buffer = buffer_handle.read(cx);
2970 if buffer.is_dirty() {
2971 if let Some(file) = File::from_dyn(buffer.file()) {
2972 if file.is_local() {
2973 local_buffers.push(buffer_handle);
2974 } else {
2975 remote_buffers.get_or_insert(Vec::new()).push(buffer_handle);
2976 }
2977 }
2978 }
2979 }
2980
2981 let remote_buffers = self.remote_id().zip(remote_buffers);
2982 let client = self.client.clone();
2983
2984 cx.spawn(|this, mut cx| async move {
2985 let mut project_transaction = ProjectTransaction::default();
2986
2987 if let Some((project_id, remote_buffers)) = remote_buffers {
2988 let response = client
2989 .request(proto::ReloadBuffers {
2990 project_id,
2991 buffer_ids: remote_buffers
2992 .iter()
2993 .map(|buffer| buffer.read_with(&cx, |buffer, _| buffer.remote_id()))
2994 .collect(),
2995 })
2996 .await?
2997 .transaction
2998 .ok_or_else(|| anyhow!("missing transaction"))?;
2999 project_transaction = this
3000 .update(&mut cx, |this, cx| {
3001 this.deserialize_project_transaction(response, push_to_history, cx)
3002 })
3003 .await?;
3004 }
3005
3006 for buffer in local_buffers {
3007 let transaction = buffer
3008 .update(&mut cx, |buffer, cx| buffer.reload(cx))
3009 .await?;
3010 buffer.update(&mut cx, |buffer, cx| {
3011 if let Some(transaction) = transaction {
3012 if !push_to_history {
3013 buffer.forget_transaction(transaction.id);
3014 }
3015 project_transaction.0.insert(cx.handle(), transaction);
3016 }
3017 });
3018 }
3019
3020 Ok(project_transaction)
3021 })
3022 }
3023
3024 pub fn format(
3025 &self,
3026 buffers: HashSet<ModelHandle<Buffer>>,
3027 push_to_history: bool,
3028 cx: &mut ModelContext<Project>,
3029 ) -> Task<Result<ProjectTransaction>> {
3030 let mut local_buffers = Vec::new();
3031 let mut remote_buffers = None;
3032 for buffer_handle in buffers {
3033 let buffer = buffer_handle.read(cx);
3034 if let Some(file) = File::from_dyn(buffer.file()) {
3035 if let Some(buffer_abs_path) = file.as_local().map(|f| f.abs_path(cx)) {
3036 if let Some((_, server)) = self.language_server_for_buffer(buffer, cx) {
3037 local_buffers.push((buffer_handle, buffer_abs_path, server.clone()));
3038 }
3039 } else {
3040 remote_buffers.get_or_insert(Vec::new()).push(buffer_handle);
3041 }
3042 } else {
3043 return Task::ready(Ok(Default::default()));
3044 }
3045 }
3046
3047 let remote_buffers = self.remote_id().zip(remote_buffers);
3048 let client = self.client.clone();
3049
3050 cx.spawn(|this, mut cx| async move {
3051 let mut project_transaction = ProjectTransaction::default();
3052
3053 if let Some((project_id, remote_buffers)) = remote_buffers {
3054 let response = client
3055 .request(proto::FormatBuffers {
3056 project_id,
3057 buffer_ids: remote_buffers
3058 .iter()
3059 .map(|buffer| buffer.read_with(&cx, |buffer, _| buffer.remote_id()))
3060 .collect(),
3061 })
3062 .await?
3063 .transaction
3064 .ok_or_else(|| anyhow!("missing transaction"))?;
3065 project_transaction = this
3066 .update(&mut cx, |this, cx| {
3067 this.deserialize_project_transaction(response, push_to_history, cx)
3068 })
3069 .await?;
3070 }
3071
3072 for (buffer, buffer_abs_path, language_server) in local_buffers {
3073 let (format_on_save, tab_size) = buffer.read_with(&cx, |buffer, cx| {
3074 let settings = cx.global::<Settings>();
3075 let language_name = buffer.language().map(|language| language.name());
3076 (
3077 settings.format_on_save(language_name.as_deref()),
3078 settings.tab_size(language_name.as_deref()),
3079 )
3080 });
3081
3082 let transaction = match format_on_save {
3083 settings::FormatOnSave::Off => continue,
3084 settings::FormatOnSave::LanguageServer => Self::format_via_lsp(
3085 &this,
3086 &buffer,
3087 &buffer_abs_path,
3088 &language_server,
3089 tab_size,
3090 &mut cx,
3091 )
3092 .await
3093 .context("failed to format via language server")?,
3094 settings::FormatOnSave::External { command, arguments } => {
3095 Self::format_via_external_command(
3096 &buffer,
3097 &buffer_abs_path,
3098 &command,
3099 &arguments,
3100 &mut cx,
3101 )
3102 .await
3103 .context(format!(
3104 "failed to format via external command {:?}",
3105 command
3106 ))?
3107 }
3108 };
3109
3110 if let Some(transaction) = transaction {
3111 if !push_to_history {
3112 buffer.update(&mut cx, |buffer, _| {
3113 buffer.forget_transaction(transaction.id)
3114 });
3115 }
3116 project_transaction.0.insert(buffer, transaction);
3117 }
3118 }
3119
3120 Ok(project_transaction)
3121 })
3122 }
3123
3124 async fn format_via_lsp(
3125 this: &ModelHandle<Self>,
3126 buffer: &ModelHandle<Buffer>,
3127 abs_path: &Path,
3128 language_server: &Arc<LanguageServer>,
3129 tab_size: NonZeroU32,
3130 cx: &mut AsyncAppContext,
3131 ) -> Result<Option<Transaction>> {
3132 let text_document =
3133 lsp::TextDocumentIdentifier::new(lsp::Url::from_file_path(abs_path).unwrap());
3134 let capabilities = &language_server.capabilities();
3135 let lsp_edits = if capabilities
3136 .document_formatting_provider
3137 .as_ref()
3138 .map_or(false, |provider| *provider != lsp::OneOf::Left(false))
3139 {
3140 language_server
3141 .request::<lsp::request::Formatting>(lsp::DocumentFormattingParams {
3142 text_document,
3143 options: lsp::FormattingOptions {
3144 tab_size: tab_size.into(),
3145 insert_spaces: true,
3146 insert_final_newline: Some(true),
3147 ..Default::default()
3148 },
3149 work_done_progress_params: Default::default(),
3150 })
3151 .await?
3152 } else if capabilities
3153 .document_range_formatting_provider
3154 .as_ref()
3155 .map_or(false, |provider| *provider != lsp::OneOf::Left(false))
3156 {
3157 let buffer_start = lsp::Position::new(0, 0);
3158 let buffer_end =
3159 buffer.read_with(cx, |buffer, _| point_to_lsp(buffer.max_point_utf16()));
3160 language_server
3161 .request::<lsp::request::RangeFormatting>(lsp::DocumentRangeFormattingParams {
3162 text_document,
3163 range: lsp::Range::new(buffer_start, buffer_end),
3164 options: lsp::FormattingOptions {
3165 tab_size: tab_size.into(),
3166 insert_spaces: true,
3167 insert_final_newline: Some(true),
3168 ..Default::default()
3169 },
3170 work_done_progress_params: Default::default(),
3171 })
3172 .await?
3173 } else {
3174 None
3175 };
3176
3177 if let Some(lsp_edits) = lsp_edits {
3178 let edits = this
3179 .update(cx, |this, cx| {
3180 this.edits_from_lsp(&buffer, lsp_edits, None, cx)
3181 })
3182 .await?;
3183 buffer.update(cx, |buffer, cx| {
3184 buffer.finalize_last_transaction();
3185 buffer.start_transaction();
3186 for (range, text) in edits {
3187 buffer.edit([(range, text)], cx);
3188 }
3189 if buffer.end_transaction(cx).is_some() {
3190 let transaction = buffer.finalize_last_transaction().unwrap().clone();
3191 Ok(Some(transaction))
3192 } else {
3193 Ok(None)
3194 }
3195 })
3196 } else {
3197 Ok(None)
3198 }
3199 }
3200
3201 async fn format_via_external_command(
3202 buffer: &ModelHandle<Buffer>,
3203 buffer_abs_path: &Path,
3204 command: &str,
3205 arguments: &[String],
3206 cx: &mut AsyncAppContext,
3207 ) -> Result<Option<Transaction>> {
3208 let working_dir_path = buffer.read_with(cx, |buffer, cx| {
3209 let file = File::from_dyn(buffer.file())?;
3210 let worktree = file.worktree.read(cx).as_local()?;
3211 let mut worktree_path = worktree.abs_path().to_path_buf();
3212 if worktree.root_entry()?.is_file() {
3213 worktree_path.pop();
3214 }
3215 Some(worktree_path)
3216 });
3217
3218 if let Some(working_dir_path) = working_dir_path {
3219 let mut child =
3220 smol::process::Command::new(command)
3221 .args(arguments.iter().map(|arg| {
3222 arg.replace("{buffer_path}", &buffer_abs_path.to_string_lossy())
3223 }))
3224 .current_dir(&working_dir_path)
3225 .stdin(smol::process::Stdio::piped())
3226 .stdout(smol::process::Stdio::piped())
3227 .stderr(smol::process::Stdio::piped())
3228 .spawn()?;
3229 let stdin = child
3230 .stdin
3231 .as_mut()
3232 .ok_or_else(|| anyhow!("failed to acquire stdin"))?;
3233 let text = buffer.read_with(cx, |buffer, _| buffer.as_rope().clone());
3234 for chunk in text.chunks() {
3235 stdin.write_all(chunk.as_bytes()).await?;
3236 }
3237 stdin.flush().await?;
3238
3239 let output = child.output().await?;
3240 if !output.status.success() {
3241 return Err(anyhow!(
3242 "command failed with exit code {:?}:\nstdout: {}\nstderr: {}",
3243 output.status.code(),
3244 String::from_utf8_lossy(&output.stdout),
3245 String::from_utf8_lossy(&output.stderr),
3246 ));
3247 }
3248
3249 let stdout = String::from_utf8(output.stdout)?;
3250 let diff = buffer
3251 .read_with(cx, |buffer, cx| buffer.diff(stdout, cx))
3252 .await;
3253 Ok(buffer.update(cx, |buffer, cx| buffer.apply_diff(diff, cx).cloned()))
3254 } else {
3255 Ok(None)
3256 }
3257 }
3258
3259 pub fn definition<T: ToPointUtf16>(
3260 &self,
3261 buffer: &ModelHandle<Buffer>,
3262 position: T,
3263 cx: &mut ModelContext<Self>,
3264 ) -> Task<Result<Vec<LocationLink>>> {
3265 let position = position.to_point_utf16(buffer.read(cx));
3266 self.request_lsp(buffer.clone(), GetDefinition { position }, cx)
3267 }
3268
3269 pub fn references<T: ToPointUtf16>(
3270 &self,
3271 buffer: &ModelHandle<Buffer>,
3272 position: T,
3273 cx: &mut ModelContext<Self>,
3274 ) -> Task<Result<Vec<Location>>> {
3275 let position = position.to_point_utf16(buffer.read(cx));
3276 self.request_lsp(buffer.clone(), GetReferences { position }, cx)
3277 }
3278
3279 pub fn document_highlights<T: ToPointUtf16>(
3280 &self,
3281 buffer: &ModelHandle<Buffer>,
3282 position: T,
3283 cx: &mut ModelContext<Self>,
3284 ) -> Task<Result<Vec<DocumentHighlight>>> {
3285 let position = position.to_point_utf16(buffer.read(cx));
3286 self.request_lsp(buffer.clone(), GetDocumentHighlights { position }, cx)
3287 }
3288
3289 pub fn symbols(&self, query: &str, cx: &mut ModelContext<Self>) -> Task<Result<Vec<Symbol>>> {
3290 if self.is_local() {
3291 let mut requests = Vec::new();
3292 for ((worktree_id, _), server_id) in self.language_server_ids.iter() {
3293 let worktree_id = *worktree_id;
3294 if let Some(worktree) = self
3295 .worktree_for_id(worktree_id, cx)
3296 .and_then(|worktree| worktree.read(cx).as_local())
3297 {
3298 if let Some(LanguageServerState::Running { adapter, server }) =
3299 self.language_servers.get(server_id)
3300 {
3301 let adapter = adapter.clone();
3302 let worktree_abs_path = worktree.abs_path().clone();
3303 requests.push(
3304 server
3305 .request::<lsp::request::WorkspaceSymbol>(
3306 lsp::WorkspaceSymbolParams {
3307 query: query.to_string(),
3308 ..Default::default()
3309 },
3310 )
3311 .log_err()
3312 .map(move |response| {
3313 (
3314 adapter,
3315 worktree_id,
3316 worktree_abs_path,
3317 response.unwrap_or_default(),
3318 )
3319 }),
3320 );
3321 }
3322 }
3323 }
3324
3325 cx.spawn_weak(|this, cx| async move {
3326 let responses = futures::future::join_all(requests).await;
3327 let this = if let Some(this) = this.upgrade(&cx) {
3328 this
3329 } else {
3330 return Ok(Default::default());
3331 };
3332
3333 struct PartialSymbol {
3334 source_worktree_id: WorktreeId,
3335 worktree_id: WorktreeId,
3336 language_server_name: LanguageServerName,
3337 path: PathBuf,
3338 language: Option<Arc<Language>>,
3339 name: String,
3340 kind: lsp::SymbolKind,
3341 range: Range<PointUtf16>,
3342 signature: [u8; 32],
3343 }
3344
3345 let partial_symbols = this.read_with(&cx, |this, cx| {
3346 let mut partial_symbols = Vec::new();
3347 for (adapter, source_worktree_id, worktree_abs_path, response) in responses {
3348 for lsp_symbol in response.into_iter().flatten() {
3349 let abs_path = match lsp_symbol.location.uri.to_file_path().ok() {
3350 Some(abs_path) => abs_path,
3351 None => continue,
3352 };
3353 let mut worktree_id = source_worktree_id;
3354 let path;
3355 if let Some((worktree, rel_path)) =
3356 this.find_local_worktree(&abs_path, cx)
3357 {
3358 worktree_id = worktree.read(cx).id();
3359 path = rel_path;
3360 } else {
3361 path = relativize_path(&worktree_abs_path, &abs_path);
3362 }
3363
3364 let language = this.languages.select_language(&path).clone();
3365 let signature = this.symbol_signature(worktree_id, &path);
3366
3367 partial_symbols.push(PartialSymbol {
3368 source_worktree_id,
3369 worktree_id,
3370 language_server_name: adapter.name.clone(),
3371 name: lsp_symbol.name,
3372 kind: lsp_symbol.kind,
3373 language,
3374 path,
3375 range: range_from_lsp(lsp_symbol.location.range),
3376 signature,
3377 });
3378 }
3379 }
3380
3381 partial_symbols
3382 });
3383
3384 let mut symbols = Vec::new();
3385 for ps in partial_symbols.into_iter() {
3386 symbols.push(async move {
3387 let label = match ps.language {
3388 Some(language) => language.label_for_symbol(&ps.name, ps.kind).await,
3389 None => None,
3390 }
3391 .unwrap_or_else(|| CodeLabel::plain(ps.name.clone(), None));
3392
3393 Symbol {
3394 source_worktree_id: ps.source_worktree_id,
3395 worktree_id: ps.worktree_id,
3396 language_server_name: ps.language_server_name,
3397 name: ps.name,
3398 kind: ps.kind,
3399 label,
3400 path: ps.path,
3401 range: ps.range,
3402 signature: ps.signature,
3403 }
3404 });
3405 }
3406
3407 Ok(futures::future::join_all(symbols).await)
3408 })
3409 } else if let Some(project_id) = self.remote_id() {
3410 let request = self.client.request(proto::GetProjectSymbols {
3411 project_id,
3412 query: query.to_string(),
3413 });
3414 cx.spawn_weak(|this, cx| async move {
3415 let response = request.await?;
3416 let mut symbols = Vec::new();
3417 if let Some(this) = this.upgrade(&cx) {
3418 let new_symbols = this.read_with(&cx, |this, _| {
3419 let mut new_symbols = Vec::new();
3420 for symbol in response.symbols.into_iter() {
3421 new_symbols.push(this.deserialize_symbol(symbol));
3422 }
3423 new_symbols
3424 });
3425 symbols = futures::future::join_all(new_symbols.into_iter())
3426 .await
3427 .into_iter()
3428 .filter_map(|symbol| symbol.ok())
3429 .collect::<Vec<_>>();
3430 }
3431 Ok(symbols)
3432 })
3433 } else {
3434 Task::ready(Ok(Default::default()))
3435 }
3436 }
3437
3438 pub fn open_buffer_for_symbol(
3439 &mut self,
3440 symbol: &Symbol,
3441 cx: &mut ModelContext<Self>,
3442 ) -> Task<Result<ModelHandle<Buffer>>> {
3443 if self.is_local() {
3444 let language_server_id = if let Some(id) = self.language_server_ids.get(&(
3445 symbol.source_worktree_id,
3446 symbol.language_server_name.clone(),
3447 )) {
3448 *id
3449 } else {
3450 return Task::ready(Err(anyhow!(
3451 "language server for worktree and language not found"
3452 )));
3453 };
3454
3455 let worktree_abs_path = if let Some(worktree_abs_path) = self
3456 .worktree_for_id(symbol.worktree_id, cx)
3457 .and_then(|worktree| worktree.read(cx).as_local())
3458 .map(|local_worktree| local_worktree.abs_path())
3459 {
3460 worktree_abs_path
3461 } else {
3462 return Task::ready(Err(anyhow!("worktree not found for symbol")));
3463 };
3464 let symbol_abs_path = worktree_abs_path.join(&symbol.path);
3465 let symbol_uri = if let Ok(uri) = lsp::Url::from_file_path(symbol_abs_path) {
3466 uri
3467 } else {
3468 return Task::ready(Err(anyhow!("invalid symbol path")));
3469 };
3470
3471 self.open_local_buffer_via_lsp(
3472 symbol_uri,
3473 language_server_id,
3474 symbol.language_server_name.clone(),
3475 cx,
3476 )
3477 } else if let Some(project_id) = self.remote_id() {
3478 let request = self.client.request(proto::OpenBufferForSymbol {
3479 project_id,
3480 symbol: Some(serialize_symbol(symbol)),
3481 });
3482 cx.spawn(|this, mut cx| async move {
3483 let response = request.await?;
3484 let buffer = response.buffer.ok_or_else(|| anyhow!("invalid buffer"))?;
3485 this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
3486 .await
3487 })
3488 } else {
3489 Task::ready(Err(anyhow!("project does not have a remote id")))
3490 }
3491 }
3492
3493 pub fn hover<T: ToPointUtf16>(
3494 &self,
3495 buffer: &ModelHandle<Buffer>,
3496 position: T,
3497 cx: &mut ModelContext<Self>,
3498 ) -> Task<Result<Option<Hover>>> {
3499 let position = position.to_point_utf16(buffer.read(cx));
3500 self.request_lsp(buffer.clone(), GetHover { position }, cx)
3501 }
3502
3503 pub fn completions<T: ToPointUtf16>(
3504 &self,
3505 source_buffer_handle: &ModelHandle<Buffer>,
3506 position: T,
3507 cx: &mut ModelContext<Self>,
3508 ) -> Task<Result<Vec<Completion>>> {
3509 let source_buffer_handle = source_buffer_handle.clone();
3510 let source_buffer = source_buffer_handle.read(cx);
3511 let buffer_id = source_buffer.remote_id();
3512 let language = source_buffer.language().cloned();
3513 let worktree;
3514 let buffer_abs_path;
3515 if let Some(file) = File::from_dyn(source_buffer.file()) {
3516 worktree = file.worktree.clone();
3517 buffer_abs_path = file.as_local().map(|f| f.abs_path(cx));
3518 } else {
3519 return Task::ready(Ok(Default::default()));
3520 };
3521
3522 let position = position.to_point_utf16(source_buffer);
3523 let anchor = source_buffer.anchor_after(position);
3524
3525 if worktree.read(cx).as_local().is_some() {
3526 let buffer_abs_path = buffer_abs_path.unwrap();
3527 let lang_server =
3528 if let Some((_, server)) = self.language_server_for_buffer(source_buffer, cx) {
3529 server.clone()
3530 } else {
3531 return Task::ready(Ok(Default::default()));
3532 };
3533
3534 cx.spawn(|_, cx| async move {
3535 let completions = lang_server
3536 .request::<lsp::request::Completion>(lsp::CompletionParams {
3537 text_document_position: lsp::TextDocumentPositionParams::new(
3538 lsp::TextDocumentIdentifier::new(
3539 lsp::Url::from_file_path(buffer_abs_path).unwrap(),
3540 ),
3541 point_to_lsp(position),
3542 ),
3543 context: Default::default(),
3544 work_done_progress_params: Default::default(),
3545 partial_result_params: Default::default(),
3546 })
3547 .await
3548 .context("lsp completion request failed")?;
3549
3550 let completions = if let Some(completions) = completions {
3551 match completions {
3552 lsp::CompletionResponse::Array(completions) => completions,
3553 lsp::CompletionResponse::List(list) => list.items,
3554 }
3555 } else {
3556 Default::default()
3557 };
3558
3559 struct PartialCompletion {
3560 pub old_range: Range<Anchor>,
3561 pub new_text: String,
3562 pub language: Option<Arc<Language>>,
3563 pub lsp_completion: lsp::CompletionItem,
3564 }
3565
3566 let partial_completions = source_buffer_handle.read_with(&cx, |this, _| {
3567 let snapshot = this.snapshot();
3568 let clipped_position = this.clip_point_utf16(position, Bias::Left);
3569 let mut range_for_token = None;
3570 let mut partial_completions = Vec::new();
3571
3572 for lsp_completion in completions.into_iter() {
3573 // For now, we can only handle additional edits if they are returned
3574 // when resolving the completion, not if they are present initially.
3575 if lsp_completion
3576 .additional_text_edits
3577 .as_ref()
3578 .map_or(false, |edits| !edits.is_empty())
3579 {
3580 continue;
3581 }
3582
3583 let (old_range, new_text) = match lsp_completion.text_edit.as_ref() {
3584 // If the language server provides a range to overwrite, then
3585 // check that the range is valid.
3586 Some(lsp::CompletionTextEdit::Edit(edit)) => {
3587 let range = range_from_lsp(edit.range);
3588 let start = snapshot.clip_point_utf16(range.start, Bias::Left);
3589 let end = snapshot.clip_point_utf16(range.end, Bias::Left);
3590 if start != range.start || end != range.end {
3591 log::info!("completion out of expected range");
3592 continue;
3593 }
3594 (
3595 snapshot.anchor_before(start)..snapshot.anchor_after(end),
3596 edit.new_text.clone(),
3597 )
3598 }
3599 // If the language server does not provide a range, then infer
3600 // the range based on the syntax tree.
3601 None => {
3602 if position != clipped_position {
3603 log::info!("completion out of expected range");
3604 continue;
3605 }
3606 let Range { start, end } = range_for_token
3607 .get_or_insert_with(|| {
3608 let offset = position.to_offset(&snapshot);
3609 let (range, kind) = snapshot.surrounding_word(offset);
3610 if kind == Some(CharKind::Word) {
3611 range
3612 } else {
3613 offset..offset
3614 }
3615 })
3616 .clone();
3617 let text = lsp_completion
3618 .insert_text
3619 .as_ref()
3620 .unwrap_or(&lsp_completion.label)
3621 .clone();
3622 (
3623 snapshot.anchor_before(start)..snapshot.anchor_after(end),
3624 text.clone(),
3625 )
3626 }
3627 Some(lsp::CompletionTextEdit::InsertAndReplace(_)) => {
3628 log::info!("unsupported insert/replace completion");
3629 continue;
3630 }
3631 };
3632
3633 let partial_completion = PartialCompletion {
3634 old_range,
3635 new_text,
3636 language: language.clone(),
3637 lsp_completion,
3638 };
3639
3640 partial_completions.push(partial_completion);
3641 }
3642 partial_completions
3643 });
3644
3645 let mut result = Vec::new();
3646
3647 for pc in partial_completions.into_iter() {
3648 result.push(async move {
3649 let label = match pc.language.as_ref() {
3650 Some(l) => l.label_for_completion(&pc.lsp_completion).await,
3651 None => None,
3652 }
3653 .unwrap_or_else(|| {
3654 CodeLabel::plain(
3655 pc.lsp_completion.label.clone(),
3656 pc.lsp_completion.filter_text.as_deref(),
3657 )
3658 });
3659
3660 let completion = Completion {
3661 old_range: pc.old_range,
3662 new_text: pc.new_text,
3663 label,
3664 lsp_completion: pc.lsp_completion,
3665 };
3666
3667 completion
3668 });
3669 }
3670
3671 Ok(futures::future::join_all(result).await)
3672 })
3673 } else if let Some(project_id) = self.remote_id() {
3674 let rpc = self.client.clone();
3675 let message = proto::GetCompletions {
3676 project_id,
3677 buffer_id,
3678 position: Some(language::proto::serialize_anchor(&anchor)),
3679 version: serialize_version(&source_buffer.version()),
3680 };
3681 cx.spawn_weak(|_, mut cx| async move {
3682 let response = rpc.request(message).await?;
3683
3684 source_buffer_handle
3685 .update(&mut cx, |buffer, _| {
3686 buffer.wait_for_version(deserialize_version(response.version))
3687 })
3688 .await;
3689
3690 let mut result = Vec::new();
3691 for completion in response.completions.into_iter() {
3692 let completion =
3693 language::proto::deserialize_completion(completion, language.clone())
3694 .await?;
3695 result.push(completion);
3696 }
3697 Ok(result)
3698 })
3699 } else {
3700 Task::ready(Ok(Default::default()))
3701 }
3702 }
3703
3704 pub fn apply_additional_edits_for_completion(
3705 &self,
3706 buffer_handle: ModelHandle<Buffer>,
3707 completion: Completion,
3708 push_to_history: bool,
3709 cx: &mut ModelContext<Self>,
3710 ) -> Task<Result<Option<Transaction>>> {
3711 let buffer = buffer_handle.read(cx);
3712 let buffer_id = buffer.remote_id();
3713
3714 if self.is_local() {
3715 let lang_server = if let Some((_, server)) = self.language_server_for_buffer(buffer, cx)
3716 {
3717 server.clone()
3718 } else {
3719 return Task::ready(Ok(Default::default()));
3720 };
3721
3722 cx.spawn(|this, mut cx| async move {
3723 let resolved_completion = lang_server
3724 .request::<lsp::request::ResolveCompletionItem>(completion.lsp_completion)
3725 .await?;
3726 if let Some(edits) = resolved_completion.additional_text_edits {
3727 let edits = this
3728 .update(&mut cx, |this, cx| {
3729 this.edits_from_lsp(&buffer_handle, edits, None, cx)
3730 })
3731 .await?;
3732 buffer_handle.update(&mut cx, |buffer, cx| {
3733 buffer.finalize_last_transaction();
3734 buffer.start_transaction();
3735 for (range, text) in edits {
3736 buffer.edit([(range, text)], cx);
3737 }
3738 let transaction = if buffer.end_transaction(cx).is_some() {
3739 let transaction = buffer.finalize_last_transaction().unwrap().clone();
3740 if !push_to_history {
3741 buffer.forget_transaction(transaction.id);
3742 }
3743 Some(transaction)
3744 } else {
3745 None
3746 };
3747 Ok(transaction)
3748 })
3749 } else {
3750 Ok(None)
3751 }
3752 })
3753 } else if let Some(project_id) = self.remote_id() {
3754 let client = self.client.clone();
3755 cx.spawn(|_, mut cx| async move {
3756 let response = client
3757 .request(proto::ApplyCompletionAdditionalEdits {
3758 project_id,
3759 buffer_id,
3760 completion: Some(language::proto::serialize_completion(&completion)),
3761 })
3762 .await?;
3763
3764 if let Some(transaction) = response.transaction {
3765 let transaction = language::proto::deserialize_transaction(transaction)?;
3766 buffer_handle
3767 .update(&mut cx, |buffer, _| {
3768 buffer.wait_for_edits(transaction.edit_ids.iter().copied())
3769 })
3770 .await;
3771 if push_to_history {
3772 buffer_handle.update(&mut cx, |buffer, _| {
3773 buffer.push_transaction(transaction.clone(), Instant::now());
3774 });
3775 }
3776 Ok(Some(transaction))
3777 } else {
3778 Ok(None)
3779 }
3780 })
3781 } else {
3782 Task::ready(Err(anyhow!("project does not have a remote id")))
3783 }
3784 }
3785
3786 pub fn code_actions<T: Clone + ToOffset>(
3787 &self,
3788 buffer_handle: &ModelHandle<Buffer>,
3789 range: Range<T>,
3790 cx: &mut ModelContext<Self>,
3791 ) -> Task<Result<Vec<CodeAction>>> {
3792 let buffer_handle = buffer_handle.clone();
3793 let buffer = buffer_handle.read(cx);
3794 let snapshot = buffer.snapshot();
3795 let relevant_diagnostics = snapshot
3796 .diagnostics_in_range::<usize, usize>(range.to_offset(&snapshot), false)
3797 .map(|entry| entry.to_lsp_diagnostic_stub())
3798 .collect();
3799 let buffer_id = buffer.remote_id();
3800 let worktree;
3801 let buffer_abs_path;
3802 if let Some(file) = File::from_dyn(buffer.file()) {
3803 worktree = file.worktree.clone();
3804 buffer_abs_path = file.as_local().map(|f| f.abs_path(cx));
3805 } else {
3806 return Task::ready(Ok(Default::default()));
3807 };
3808 let range = buffer.anchor_before(range.start)..buffer.anchor_before(range.end);
3809
3810 if worktree.read(cx).as_local().is_some() {
3811 let buffer_abs_path = buffer_abs_path.unwrap();
3812 let lang_server = if let Some((_, server)) = self.language_server_for_buffer(buffer, cx)
3813 {
3814 server.clone()
3815 } else {
3816 return Task::ready(Ok(Default::default()));
3817 };
3818
3819 let lsp_range = range_to_lsp(range.to_point_utf16(buffer));
3820 cx.foreground().spawn(async move {
3821 if !lang_server.capabilities().code_action_provider.is_some() {
3822 return Ok(Default::default());
3823 }
3824
3825 Ok(lang_server
3826 .request::<lsp::request::CodeActionRequest>(lsp::CodeActionParams {
3827 text_document: lsp::TextDocumentIdentifier::new(
3828 lsp::Url::from_file_path(buffer_abs_path).unwrap(),
3829 ),
3830 range: lsp_range,
3831 work_done_progress_params: Default::default(),
3832 partial_result_params: Default::default(),
3833 context: lsp::CodeActionContext {
3834 diagnostics: relevant_diagnostics,
3835 only: Some(vec![
3836 lsp::CodeActionKind::QUICKFIX,
3837 lsp::CodeActionKind::REFACTOR,
3838 lsp::CodeActionKind::REFACTOR_EXTRACT,
3839 lsp::CodeActionKind::SOURCE,
3840 ]),
3841 },
3842 })
3843 .await?
3844 .unwrap_or_default()
3845 .into_iter()
3846 .filter_map(|entry| {
3847 if let lsp::CodeActionOrCommand::CodeAction(lsp_action) = entry {
3848 Some(CodeAction {
3849 range: range.clone(),
3850 lsp_action,
3851 })
3852 } else {
3853 None
3854 }
3855 })
3856 .collect())
3857 })
3858 } else if let Some(project_id) = self.remote_id() {
3859 let rpc = self.client.clone();
3860 let version = buffer.version();
3861 cx.spawn_weak(|_, mut cx| async move {
3862 let response = rpc
3863 .request(proto::GetCodeActions {
3864 project_id,
3865 buffer_id,
3866 start: Some(language::proto::serialize_anchor(&range.start)),
3867 end: Some(language::proto::serialize_anchor(&range.end)),
3868 version: serialize_version(&version),
3869 })
3870 .await?;
3871
3872 buffer_handle
3873 .update(&mut cx, |buffer, _| {
3874 buffer.wait_for_version(deserialize_version(response.version))
3875 })
3876 .await;
3877
3878 response
3879 .actions
3880 .into_iter()
3881 .map(language::proto::deserialize_code_action)
3882 .collect()
3883 })
3884 } else {
3885 Task::ready(Ok(Default::default()))
3886 }
3887 }
3888
3889 pub fn apply_code_action(
3890 &self,
3891 buffer_handle: ModelHandle<Buffer>,
3892 mut action: CodeAction,
3893 push_to_history: bool,
3894 cx: &mut ModelContext<Self>,
3895 ) -> Task<Result<ProjectTransaction>> {
3896 if self.is_local() {
3897 let buffer = buffer_handle.read(cx);
3898 let (lsp_adapter, lang_server) =
3899 if let Some((adapter, server)) = self.language_server_for_buffer(buffer, cx) {
3900 (adapter.clone(), server.clone())
3901 } else {
3902 return Task::ready(Ok(Default::default()));
3903 };
3904 let range = action.range.to_point_utf16(buffer);
3905
3906 cx.spawn(|this, mut cx| async move {
3907 if let Some(lsp_range) = action
3908 .lsp_action
3909 .data
3910 .as_mut()
3911 .and_then(|d| d.get_mut("codeActionParams"))
3912 .and_then(|d| d.get_mut("range"))
3913 {
3914 *lsp_range = serde_json::to_value(&range_to_lsp(range)).unwrap();
3915 action.lsp_action = lang_server
3916 .request::<lsp::request::CodeActionResolveRequest>(action.lsp_action)
3917 .await?;
3918 } else {
3919 let actions = this
3920 .update(&mut cx, |this, cx| {
3921 this.code_actions(&buffer_handle, action.range, cx)
3922 })
3923 .await?;
3924 action.lsp_action = actions
3925 .into_iter()
3926 .find(|a| a.lsp_action.title == action.lsp_action.title)
3927 .ok_or_else(|| anyhow!("code action is outdated"))?
3928 .lsp_action;
3929 }
3930
3931 if let Some(edit) = action.lsp_action.edit {
3932 Self::deserialize_workspace_edit(
3933 this,
3934 edit,
3935 push_to_history,
3936 lsp_adapter.clone(),
3937 lang_server.clone(),
3938 &mut cx,
3939 )
3940 .await
3941 } else if let Some(command) = action.lsp_action.command {
3942 this.update(&mut cx, |this, _| {
3943 this.last_workspace_edits_by_language_server
3944 .remove(&lang_server.server_id());
3945 });
3946 lang_server
3947 .request::<lsp::request::ExecuteCommand>(lsp::ExecuteCommandParams {
3948 command: command.command,
3949 arguments: command.arguments.unwrap_or_default(),
3950 ..Default::default()
3951 })
3952 .await?;
3953 Ok(this.update(&mut cx, |this, _| {
3954 this.last_workspace_edits_by_language_server
3955 .remove(&lang_server.server_id())
3956 .unwrap_or_default()
3957 }))
3958 } else {
3959 Ok(ProjectTransaction::default())
3960 }
3961 })
3962 } else if let Some(project_id) = self.remote_id() {
3963 let client = self.client.clone();
3964 let request = proto::ApplyCodeAction {
3965 project_id,
3966 buffer_id: buffer_handle.read(cx).remote_id(),
3967 action: Some(language::proto::serialize_code_action(&action)),
3968 };
3969 cx.spawn(|this, mut cx| async move {
3970 let response = client
3971 .request(request)
3972 .await?
3973 .transaction
3974 .ok_or_else(|| anyhow!("missing transaction"))?;
3975 this.update(&mut cx, |this, cx| {
3976 this.deserialize_project_transaction(response, push_to_history, cx)
3977 })
3978 .await
3979 })
3980 } else {
3981 Task::ready(Err(anyhow!("project does not have a remote id")))
3982 }
3983 }
3984
3985 async fn deserialize_workspace_edit(
3986 this: ModelHandle<Self>,
3987 edit: lsp::WorkspaceEdit,
3988 push_to_history: bool,
3989 lsp_adapter: Arc<LspAdapter>,
3990 language_server: Arc<LanguageServer>,
3991 cx: &mut AsyncAppContext,
3992 ) -> Result<ProjectTransaction> {
3993 let fs = this.read_with(cx, |this, _| this.fs.clone());
3994 let mut operations = Vec::new();
3995 if let Some(document_changes) = edit.document_changes {
3996 match document_changes {
3997 lsp::DocumentChanges::Edits(edits) => {
3998 operations.extend(edits.into_iter().map(lsp::DocumentChangeOperation::Edit))
3999 }
4000 lsp::DocumentChanges::Operations(ops) => operations = ops,
4001 }
4002 } else if let Some(changes) = edit.changes {
4003 operations.extend(changes.into_iter().map(|(uri, edits)| {
4004 lsp::DocumentChangeOperation::Edit(lsp::TextDocumentEdit {
4005 text_document: lsp::OptionalVersionedTextDocumentIdentifier {
4006 uri,
4007 version: None,
4008 },
4009 edits: edits.into_iter().map(lsp::OneOf::Left).collect(),
4010 })
4011 }));
4012 }
4013
4014 let mut project_transaction = ProjectTransaction::default();
4015 for operation in operations {
4016 match operation {
4017 lsp::DocumentChangeOperation::Op(lsp::ResourceOp::Create(op)) => {
4018 let abs_path = op
4019 .uri
4020 .to_file_path()
4021 .map_err(|_| anyhow!("can't convert URI to path"))?;
4022
4023 if let Some(parent_path) = abs_path.parent() {
4024 fs.create_dir(parent_path).await?;
4025 }
4026 if abs_path.ends_with("/") {
4027 fs.create_dir(&abs_path).await?;
4028 } else {
4029 fs.create_file(&abs_path, op.options.map(Into::into).unwrap_or_default())
4030 .await?;
4031 }
4032 }
4033 lsp::DocumentChangeOperation::Op(lsp::ResourceOp::Rename(op)) => {
4034 let source_abs_path = op
4035 .old_uri
4036 .to_file_path()
4037 .map_err(|_| anyhow!("can't convert URI to path"))?;
4038 let target_abs_path = op
4039 .new_uri
4040 .to_file_path()
4041 .map_err(|_| anyhow!("can't convert URI to path"))?;
4042 fs.rename(
4043 &source_abs_path,
4044 &target_abs_path,
4045 op.options.map(Into::into).unwrap_or_default(),
4046 )
4047 .await?;
4048 }
4049 lsp::DocumentChangeOperation::Op(lsp::ResourceOp::Delete(op)) => {
4050 let abs_path = op
4051 .uri
4052 .to_file_path()
4053 .map_err(|_| anyhow!("can't convert URI to path"))?;
4054 let options = op.options.map(Into::into).unwrap_or_default();
4055 if abs_path.ends_with("/") {
4056 fs.remove_dir(&abs_path, options).await?;
4057 } else {
4058 fs.remove_file(&abs_path, options).await?;
4059 }
4060 }
4061 lsp::DocumentChangeOperation::Edit(op) => {
4062 let buffer_to_edit = this
4063 .update(cx, |this, cx| {
4064 this.open_local_buffer_via_lsp(
4065 op.text_document.uri,
4066 language_server.server_id(),
4067 lsp_adapter.name.clone(),
4068 cx,
4069 )
4070 })
4071 .await?;
4072
4073 let edits = this
4074 .update(cx, |this, cx| {
4075 let edits = op.edits.into_iter().map(|edit| match edit {
4076 lsp::OneOf::Left(edit) => edit,
4077 lsp::OneOf::Right(edit) => edit.text_edit,
4078 });
4079 this.edits_from_lsp(
4080 &buffer_to_edit,
4081 edits,
4082 op.text_document.version,
4083 cx,
4084 )
4085 })
4086 .await?;
4087
4088 let transaction = buffer_to_edit.update(cx, |buffer, cx| {
4089 buffer.finalize_last_transaction();
4090 buffer.start_transaction();
4091 for (range, text) in edits {
4092 buffer.edit([(range, text)], cx);
4093 }
4094 let transaction = if buffer.end_transaction(cx).is_some() {
4095 let transaction = buffer.finalize_last_transaction().unwrap().clone();
4096 if !push_to_history {
4097 buffer.forget_transaction(transaction.id);
4098 }
4099 Some(transaction)
4100 } else {
4101 None
4102 };
4103
4104 transaction
4105 });
4106 if let Some(transaction) = transaction {
4107 project_transaction.0.insert(buffer_to_edit, transaction);
4108 }
4109 }
4110 }
4111 }
4112
4113 Ok(project_transaction)
4114 }
4115
4116 pub fn prepare_rename<T: ToPointUtf16>(
4117 &self,
4118 buffer: ModelHandle<Buffer>,
4119 position: T,
4120 cx: &mut ModelContext<Self>,
4121 ) -> Task<Result<Option<Range<Anchor>>>> {
4122 let position = position.to_point_utf16(buffer.read(cx));
4123 self.request_lsp(buffer, PrepareRename { position }, cx)
4124 }
4125
4126 pub fn perform_rename<T: ToPointUtf16>(
4127 &self,
4128 buffer: ModelHandle<Buffer>,
4129 position: T,
4130 new_name: String,
4131 push_to_history: bool,
4132 cx: &mut ModelContext<Self>,
4133 ) -> Task<Result<ProjectTransaction>> {
4134 let position = position.to_point_utf16(buffer.read(cx));
4135 self.request_lsp(
4136 buffer,
4137 PerformRename {
4138 position,
4139 new_name,
4140 push_to_history,
4141 },
4142 cx,
4143 )
4144 }
4145
4146 pub fn search(
4147 &self,
4148 query: SearchQuery,
4149 cx: &mut ModelContext<Self>,
4150 ) -> Task<Result<HashMap<ModelHandle<Buffer>, Vec<Range<Anchor>>>>> {
4151 if self.is_local() {
4152 let snapshots = self
4153 .visible_worktrees(cx)
4154 .filter_map(|tree| {
4155 let tree = tree.read(cx).as_local()?;
4156 Some(tree.snapshot())
4157 })
4158 .collect::<Vec<_>>();
4159
4160 let background = cx.background().clone();
4161 let path_count: usize = snapshots.iter().map(|s| s.visible_file_count()).sum();
4162 if path_count == 0 {
4163 return Task::ready(Ok(Default::default()));
4164 }
4165 let workers = background.num_cpus().min(path_count);
4166 let (matching_paths_tx, mut matching_paths_rx) = smol::channel::bounded(1024);
4167 cx.background()
4168 .spawn({
4169 let fs = self.fs.clone();
4170 let background = cx.background().clone();
4171 let query = query.clone();
4172 async move {
4173 let fs = &fs;
4174 let query = &query;
4175 let matching_paths_tx = &matching_paths_tx;
4176 let paths_per_worker = (path_count + workers - 1) / workers;
4177 let snapshots = &snapshots;
4178 background
4179 .scoped(|scope| {
4180 for worker_ix in 0..workers {
4181 let worker_start_ix = worker_ix * paths_per_worker;
4182 let worker_end_ix = worker_start_ix + paths_per_worker;
4183 scope.spawn(async move {
4184 let mut snapshot_start_ix = 0;
4185 let mut abs_path = PathBuf::new();
4186 for snapshot in snapshots {
4187 let snapshot_end_ix =
4188 snapshot_start_ix + snapshot.visible_file_count();
4189 if worker_end_ix <= snapshot_start_ix {
4190 break;
4191 } else if worker_start_ix > snapshot_end_ix {
4192 snapshot_start_ix = snapshot_end_ix;
4193 continue;
4194 } else {
4195 let start_in_snapshot = worker_start_ix
4196 .saturating_sub(snapshot_start_ix);
4197 let end_in_snapshot =
4198 cmp::min(worker_end_ix, snapshot_end_ix)
4199 - snapshot_start_ix;
4200
4201 for entry in snapshot
4202 .files(false, start_in_snapshot)
4203 .take(end_in_snapshot - start_in_snapshot)
4204 {
4205 if matching_paths_tx.is_closed() {
4206 break;
4207 }
4208
4209 abs_path.clear();
4210 abs_path.push(&snapshot.abs_path());
4211 abs_path.push(&entry.path);
4212 let matches = if let Some(file) =
4213 fs.open_sync(&abs_path).await.log_err()
4214 {
4215 query.detect(file).unwrap_or(false)
4216 } else {
4217 false
4218 };
4219
4220 if matches {
4221 let project_path =
4222 (snapshot.id(), entry.path.clone());
4223 if matching_paths_tx
4224 .send(project_path)
4225 .await
4226 .is_err()
4227 {
4228 break;
4229 }
4230 }
4231 }
4232
4233 snapshot_start_ix = snapshot_end_ix;
4234 }
4235 }
4236 });
4237 }
4238 })
4239 .await;
4240 }
4241 })
4242 .detach();
4243
4244 let (buffers_tx, buffers_rx) = smol::channel::bounded(1024);
4245 let open_buffers = self
4246 .opened_buffers
4247 .values()
4248 .filter_map(|b| b.upgrade(cx))
4249 .collect::<HashSet<_>>();
4250 cx.spawn(|this, cx| async move {
4251 for buffer in &open_buffers {
4252 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
4253 buffers_tx.send((buffer.clone(), snapshot)).await?;
4254 }
4255
4256 let open_buffers = Rc::new(RefCell::new(open_buffers));
4257 while let Some(project_path) = matching_paths_rx.next().await {
4258 if buffers_tx.is_closed() {
4259 break;
4260 }
4261
4262 let this = this.clone();
4263 let open_buffers = open_buffers.clone();
4264 let buffers_tx = buffers_tx.clone();
4265 cx.spawn(|mut cx| async move {
4266 if let Some(buffer) = this
4267 .update(&mut cx, |this, cx| this.open_buffer(project_path, cx))
4268 .await
4269 .log_err()
4270 {
4271 if open_buffers.borrow_mut().insert(buffer.clone()) {
4272 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
4273 buffers_tx.send((buffer, snapshot)).await?;
4274 }
4275 }
4276
4277 Ok::<_, anyhow::Error>(())
4278 })
4279 .detach();
4280 }
4281
4282 Ok::<_, anyhow::Error>(())
4283 })
4284 .detach_and_log_err(cx);
4285
4286 let background = cx.background().clone();
4287 cx.background().spawn(async move {
4288 let query = &query;
4289 let mut matched_buffers = Vec::new();
4290 for _ in 0..workers {
4291 matched_buffers.push(HashMap::default());
4292 }
4293 background
4294 .scoped(|scope| {
4295 for worker_matched_buffers in matched_buffers.iter_mut() {
4296 let mut buffers_rx = buffers_rx.clone();
4297 scope.spawn(async move {
4298 while let Some((buffer, snapshot)) = buffers_rx.next().await {
4299 let buffer_matches = query
4300 .search(snapshot.as_rope())
4301 .await
4302 .iter()
4303 .map(|range| {
4304 snapshot.anchor_before(range.start)
4305 ..snapshot.anchor_after(range.end)
4306 })
4307 .collect::<Vec<_>>();
4308 if !buffer_matches.is_empty() {
4309 worker_matched_buffers
4310 .insert(buffer.clone(), buffer_matches);
4311 }
4312 }
4313 });
4314 }
4315 })
4316 .await;
4317 Ok(matched_buffers.into_iter().flatten().collect())
4318 })
4319 } else if let Some(project_id) = self.remote_id() {
4320 let request = self.client.request(query.to_proto(project_id));
4321 cx.spawn(|this, mut cx| async move {
4322 let response = request.await?;
4323 let mut result = HashMap::default();
4324 for location in response.locations {
4325 let buffer = location.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
4326 let target_buffer = this
4327 .update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
4328 .await?;
4329 let start = location
4330 .start
4331 .and_then(deserialize_anchor)
4332 .ok_or_else(|| anyhow!("missing target start"))?;
4333 let end = location
4334 .end
4335 .and_then(deserialize_anchor)
4336 .ok_or_else(|| anyhow!("missing target end"))?;
4337 result
4338 .entry(target_buffer)
4339 .or_insert(Vec::new())
4340 .push(start..end)
4341 }
4342 Ok(result)
4343 })
4344 } else {
4345 Task::ready(Ok(Default::default()))
4346 }
4347 }
4348
4349 fn request_lsp<R: LspCommand>(
4350 &self,
4351 buffer_handle: ModelHandle<Buffer>,
4352 request: R,
4353 cx: &mut ModelContext<Self>,
4354 ) -> Task<Result<R::Response>>
4355 where
4356 <R::LspRequest as lsp::request::Request>::Result: Send,
4357 {
4358 let buffer = buffer_handle.read(cx);
4359 if self.is_local() {
4360 let file = File::from_dyn(buffer.file()).and_then(File::as_local);
4361 if let Some((file, language_server)) = file.zip(
4362 self.language_server_for_buffer(buffer, cx)
4363 .map(|(_, server)| server.clone()),
4364 ) {
4365 let lsp_params = request.to_lsp(&file.abs_path(cx), cx);
4366 return cx.spawn(|this, cx| async move {
4367 if !request.check_capabilities(&language_server.capabilities()) {
4368 return Ok(Default::default());
4369 }
4370
4371 let response = language_server
4372 .request::<R::LspRequest>(lsp_params)
4373 .await
4374 .context("lsp request failed")?;
4375 request
4376 .response_from_lsp(response, this, buffer_handle, cx)
4377 .await
4378 });
4379 }
4380 } else if let Some(project_id) = self.remote_id() {
4381 let rpc = self.client.clone();
4382 let message = request.to_proto(project_id, buffer);
4383 return cx.spawn(|this, cx| async move {
4384 let response = rpc.request(message).await?;
4385 request
4386 .response_from_proto(response, this, buffer_handle, cx)
4387 .await
4388 });
4389 }
4390 Task::ready(Ok(Default::default()))
4391 }
4392
4393 pub fn find_or_create_local_worktree(
4394 &mut self,
4395 abs_path: impl AsRef<Path>,
4396 visible: bool,
4397 cx: &mut ModelContext<Self>,
4398 ) -> Task<Result<(ModelHandle<Worktree>, PathBuf)>> {
4399 let abs_path = abs_path.as_ref();
4400 if let Some((tree, relative_path)) = self.find_local_worktree(abs_path, cx) {
4401 Task::ready(Ok((tree.clone(), relative_path.into())))
4402 } else {
4403 let worktree = self.create_local_worktree(abs_path, visible, cx);
4404 cx.foreground()
4405 .spawn(async move { Ok((worktree.await?, PathBuf::new())) })
4406 }
4407 }
4408
4409 pub fn find_local_worktree(
4410 &self,
4411 abs_path: &Path,
4412 cx: &AppContext,
4413 ) -> Option<(ModelHandle<Worktree>, PathBuf)> {
4414 for tree in &self.worktrees {
4415 if let Some(tree) = tree.upgrade(cx) {
4416 if let Some(relative_path) = tree
4417 .read(cx)
4418 .as_local()
4419 .and_then(|t| abs_path.strip_prefix(t.abs_path()).ok())
4420 {
4421 return Some((tree.clone(), relative_path.into()));
4422 }
4423 }
4424 }
4425 None
4426 }
4427
4428 pub fn is_shared(&self) -> bool {
4429 match &self.client_state {
4430 ProjectClientState::Local { is_shared, .. } => *is_shared,
4431 ProjectClientState::Remote { .. } => false,
4432 }
4433 }
4434
4435 fn create_local_worktree(
4436 &mut self,
4437 abs_path: impl AsRef<Path>,
4438 visible: bool,
4439 cx: &mut ModelContext<Self>,
4440 ) -> Task<Result<ModelHandle<Worktree>>> {
4441 let fs = self.fs.clone();
4442 let client = self.client.clone();
4443 let next_entry_id = self.next_entry_id.clone();
4444 let path: Arc<Path> = abs_path.as_ref().into();
4445 let task = self
4446 .loading_local_worktrees
4447 .entry(path.clone())
4448 .or_insert_with(|| {
4449 cx.spawn(|project, mut cx| {
4450 async move {
4451 let worktree = Worktree::local(
4452 client.clone(),
4453 path.clone(),
4454 visible,
4455 fs,
4456 next_entry_id,
4457 &mut cx,
4458 )
4459 .await;
4460 project.update(&mut cx, |project, _| {
4461 project.loading_local_worktrees.remove(&path);
4462 });
4463 let worktree = worktree?;
4464
4465 let project_id = project.update(&mut cx, |project, cx| {
4466 project.add_worktree(&worktree, cx);
4467 project.shared_remote_id()
4468 });
4469
4470 if let Some(project_id) = project_id {
4471 worktree
4472 .update(&mut cx, |worktree, cx| {
4473 worktree.as_local_mut().unwrap().share(project_id, cx)
4474 })
4475 .await
4476 .log_err();
4477 }
4478
4479 Ok(worktree)
4480 }
4481 .map_err(|err| Arc::new(err))
4482 })
4483 .shared()
4484 })
4485 .clone();
4486 cx.foreground().spawn(async move {
4487 match task.await {
4488 Ok(worktree) => Ok(worktree),
4489 Err(err) => Err(anyhow!("{}", err)),
4490 }
4491 })
4492 }
4493
4494 pub fn remove_worktree(&mut self, id_to_remove: WorktreeId, cx: &mut ModelContext<Self>) {
4495 self.worktrees.retain(|worktree| {
4496 if let Some(worktree) = worktree.upgrade(cx) {
4497 let id = worktree.read(cx).id();
4498 if id == id_to_remove {
4499 cx.emit(Event::WorktreeRemoved(id));
4500 false
4501 } else {
4502 true
4503 }
4504 } else {
4505 false
4506 }
4507 });
4508 self.metadata_changed(true, cx);
4509 cx.notify();
4510 }
4511
4512 fn add_worktree(&mut self, worktree: &ModelHandle<Worktree>, cx: &mut ModelContext<Self>) {
4513 cx.observe(&worktree, |_, _, cx| cx.notify()).detach();
4514 if worktree.read(cx).is_local() {
4515 cx.subscribe(&worktree, |this, worktree, _, cx| {
4516 this.update_local_worktree_buffers(worktree, cx);
4517 })
4518 .detach();
4519 }
4520
4521 let push_strong_handle = {
4522 let worktree = worktree.read(cx);
4523 self.is_shared() || worktree.is_visible() || worktree.is_remote()
4524 };
4525 if push_strong_handle {
4526 self.worktrees
4527 .push(WorktreeHandle::Strong(worktree.clone()));
4528 } else {
4529 self.worktrees
4530 .push(WorktreeHandle::Weak(worktree.downgrade()));
4531 }
4532
4533 self.metadata_changed(true, cx);
4534 cx.observe_release(&worktree, |this, worktree, cx| {
4535 this.remove_worktree(worktree.id(), cx);
4536 cx.notify();
4537 })
4538 .detach();
4539
4540 cx.emit(Event::WorktreeAdded);
4541 cx.notify();
4542 }
4543
4544 fn update_local_worktree_buffers(
4545 &mut self,
4546 worktree_handle: ModelHandle<Worktree>,
4547 cx: &mut ModelContext<Self>,
4548 ) {
4549 let snapshot = worktree_handle.read(cx).snapshot();
4550 let mut buffers_to_delete = Vec::new();
4551 let mut renamed_buffers = Vec::new();
4552 for (buffer_id, buffer) in &self.opened_buffers {
4553 if let Some(buffer) = buffer.upgrade(cx) {
4554 buffer.update(cx, |buffer, cx| {
4555 if let Some(old_file) = File::from_dyn(buffer.file()) {
4556 if old_file.worktree != worktree_handle {
4557 return;
4558 }
4559
4560 let new_file = if let Some(entry) = old_file
4561 .entry_id
4562 .and_then(|entry_id| snapshot.entry_for_id(entry_id))
4563 {
4564 File {
4565 is_local: true,
4566 entry_id: Some(entry.id),
4567 mtime: entry.mtime,
4568 path: entry.path.clone(),
4569 worktree: worktree_handle.clone(),
4570 }
4571 } else if let Some(entry) =
4572 snapshot.entry_for_path(old_file.path().as_ref())
4573 {
4574 File {
4575 is_local: true,
4576 entry_id: Some(entry.id),
4577 mtime: entry.mtime,
4578 path: entry.path.clone(),
4579 worktree: worktree_handle.clone(),
4580 }
4581 } else {
4582 File {
4583 is_local: true,
4584 entry_id: None,
4585 path: old_file.path().clone(),
4586 mtime: old_file.mtime(),
4587 worktree: worktree_handle.clone(),
4588 }
4589 };
4590
4591 let old_path = old_file.abs_path(cx);
4592 if new_file.abs_path(cx) != old_path {
4593 renamed_buffers.push((cx.handle(), old_path));
4594 }
4595
4596 if let Some(project_id) = self.shared_remote_id() {
4597 self.client
4598 .send(proto::UpdateBufferFile {
4599 project_id,
4600 buffer_id: *buffer_id as u64,
4601 file: Some(new_file.to_proto()),
4602 })
4603 .log_err();
4604 }
4605 buffer.file_updated(Arc::new(new_file), cx).detach();
4606 }
4607 });
4608 } else {
4609 buffers_to_delete.push(*buffer_id);
4610 }
4611 }
4612
4613 for buffer_id in buffers_to_delete {
4614 self.opened_buffers.remove(&buffer_id);
4615 }
4616
4617 for (buffer, old_path) in renamed_buffers {
4618 self.unregister_buffer_from_language_server(&buffer, old_path, cx);
4619 self.assign_language_to_buffer(&buffer, cx);
4620 self.register_buffer_with_language_server(&buffer, cx);
4621 }
4622 }
4623
4624 pub fn set_active_path(&mut self, entry: Option<ProjectPath>, cx: &mut ModelContext<Self>) {
4625 let new_active_entry = entry.and_then(|project_path| {
4626 let worktree = self.worktree_for_id(project_path.worktree_id, cx)?;
4627 let entry = worktree.read(cx).entry_for_path(project_path.path)?;
4628 Some(entry.id)
4629 });
4630 if new_active_entry != self.active_entry {
4631 self.active_entry = new_active_entry;
4632 cx.emit(Event::ActiveEntryChanged(new_active_entry));
4633 }
4634 }
4635
4636 pub fn language_servers_running_disk_based_diagnostics<'a>(
4637 &'a self,
4638 ) -> impl 'a + Iterator<Item = usize> {
4639 self.language_server_statuses
4640 .iter()
4641 .filter_map(|(id, status)| {
4642 if status.has_pending_diagnostic_updates {
4643 Some(*id)
4644 } else {
4645 None
4646 }
4647 })
4648 }
4649
4650 pub fn diagnostic_summary(&self, cx: &AppContext) -> DiagnosticSummary {
4651 let mut summary = DiagnosticSummary::default();
4652 for (_, path_summary) in self.diagnostic_summaries(cx) {
4653 summary.error_count += path_summary.error_count;
4654 summary.warning_count += path_summary.warning_count;
4655 }
4656 summary
4657 }
4658
4659 pub fn diagnostic_summaries<'a>(
4660 &'a self,
4661 cx: &'a AppContext,
4662 ) -> impl Iterator<Item = (ProjectPath, DiagnosticSummary)> + 'a {
4663 self.visible_worktrees(cx).flat_map(move |worktree| {
4664 let worktree = worktree.read(cx);
4665 let worktree_id = worktree.id();
4666 worktree
4667 .diagnostic_summaries()
4668 .map(move |(path, summary)| (ProjectPath { worktree_id, path }, summary))
4669 })
4670 }
4671
4672 pub fn disk_based_diagnostics_started(
4673 &mut self,
4674 language_server_id: usize,
4675 cx: &mut ModelContext<Self>,
4676 ) {
4677 cx.emit(Event::DiskBasedDiagnosticsStarted { language_server_id });
4678 }
4679
4680 pub fn disk_based_diagnostics_finished(
4681 &mut self,
4682 language_server_id: usize,
4683 cx: &mut ModelContext<Self>,
4684 ) {
4685 cx.emit(Event::DiskBasedDiagnosticsFinished { language_server_id });
4686 }
4687
4688 pub fn active_entry(&self) -> Option<ProjectEntryId> {
4689 self.active_entry
4690 }
4691
4692 pub fn entry_for_path(&self, path: &ProjectPath, cx: &AppContext) -> Option<ProjectEntryId> {
4693 self.worktree_for_id(path.worktree_id, cx)?
4694 .read(cx)
4695 .entry_for_path(&path.path)
4696 .map(|entry| entry.id)
4697 }
4698
4699 pub fn path_for_entry(&self, entry_id: ProjectEntryId, cx: &AppContext) -> Option<ProjectPath> {
4700 let worktree = self.worktree_for_entry(entry_id, cx)?;
4701 let worktree = worktree.read(cx);
4702 let worktree_id = worktree.id();
4703 let path = worktree.entry_for_id(entry_id)?.path.clone();
4704 Some(ProjectPath { worktree_id, path })
4705 }
4706
4707 // RPC message handlers
4708
4709 async fn handle_request_join_project(
4710 this: ModelHandle<Self>,
4711 message: TypedEnvelope<proto::RequestJoinProject>,
4712 _: Arc<Client>,
4713 mut cx: AsyncAppContext,
4714 ) -> Result<()> {
4715 let user_id = message.payload.requester_id;
4716 if this.read_with(&cx, |project, _| {
4717 project.collaborators.values().any(|c| c.user.id == user_id)
4718 }) {
4719 this.update(&mut cx, |this, cx| {
4720 this.respond_to_join_request(user_id, true, cx)
4721 });
4722 } else {
4723 let user_store = this.read_with(&cx, |this, _| this.user_store.clone());
4724 let user = user_store
4725 .update(&mut cx, |store, cx| store.fetch_user(user_id, cx))
4726 .await?;
4727 this.update(&mut cx, |_, cx| cx.emit(Event::ContactRequestedJoin(user)));
4728 }
4729 Ok(())
4730 }
4731
4732 async fn handle_unregister_project(
4733 this: ModelHandle<Self>,
4734 _: TypedEnvelope<proto::UnregisterProject>,
4735 _: Arc<Client>,
4736 mut cx: AsyncAppContext,
4737 ) -> Result<()> {
4738 this.update(&mut cx, |this, cx| this.removed_from_project(cx));
4739 Ok(())
4740 }
4741
4742 async fn handle_project_unshared(
4743 this: ModelHandle<Self>,
4744 _: TypedEnvelope<proto::ProjectUnshared>,
4745 _: Arc<Client>,
4746 mut cx: AsyncAppContext,
4747 ) -> Result<()> {
4748 this.update(&mut cx, |this, cx| this.unshared(cx));
4749 Ok(())
4750 }
4751
4752 async fn handle_add_collaborator(
4753 this: ModelHandle<Self>,
4754 mut envelope: TypedEnvelope<proto::AddProjectCollaborator>,
4755 _: Arc<Client>,
4756 mut cx: AsyncAppContext,
4757 ) -> Result<()> {
4758 let user_store = this.read_with(&cx, |this, _| this.user_store.clone());
4759 let collaborator = envelope
4760 .payload
4761 .collaborator
4762 .take()
4763 .ok_or_else(|| anyhow!("empty collaborator"))?;
4764
4765 let collaborator = Collaborator::from_proto(collaborator, &user_store, &mut cx).await?;
4766 this.update(&mut cx, |this, cx| {
4767 this.collaborators
4768 .insert(collaborator.peer_id, collaborator);
4769 cx.notify();
4770 });
4771
4772 Ok(())
4773 }
4774
4775 async fn handle_remove_collaborator(
4776 this: ModelHandle<Self>,
4777 envelope: TypedEnvelope<proto::RemoveProjectCollaborator>,
4778 _: Arc<Client>,
4779 mut cx: AsyncAppContext,
4780 ) -> Result<()> {
4781 this.update(&mut cx, |this, cx| {
4782 let peer_id = PeerId(envelope.payload.peer_id);
4783 let replica_id = this
4784 .collaborators
4785 .remove(&peer_id)
4786 .ok_or_else(|| anyhow!("unknown peer {:?}", peer_id))?
4787 .replica_id;
4788 for (_, buffer) in &this.opened_buffers {
4789 if let Some(buffer) = buffer.upgrade(cx) {
4790 buffer.update(cx, |buffer, cx| buffer.remove_peer(replica_id, cx));
4791 }
4792 }
4793
4794 cx.emit(Event::CollaboratorLeft(peer_id));
4795 cx.notify();
4796 Ok(())
4797 })
4798 }
4799
4800 async fn handle_join_project_request_cancelled(
4801 this: ModelHandle<Self>,
4802 envelope: TypedEnvelope<proto::JoinProjectRequestCancelled>,
4803 _: Arc<Client>,
4804 mut cx: AsyncAppContext,
4805 ) -> Result<()> {
4806 let user = this
4807 .update(&mut cx, |this, cx| {
4808 this.user_store.update(cx, |user_store, cx| {
4809 user_store.fetch_user(envelope.payload.requester_id, cx)
4810 })
4811 })
4812 .await?;
4813
4814 this.update(&mut cx, |_, cx| {
4815 cx.emit(Event::ContactCancelledJoinRequest(user));
4816 });
4817
4818 Ok(())
4819 }
4820
4821 async fn handle_update_project(
4822 this: ModelHandle<Self>,
4823 envelope: TypedEnvelope<proto::UpdateProject>,
4824 client: Arc<Client>,
4825 mut cx: AsyncAppContext,
4826 ) -> Result<()> {
4827 this.update(&mut cx, |this, cx| {
4828 let replica_id = this.replica_id();
4829 let remote_id = this.remote_id().ok_or_else(|| anyhow!("invalid project"))?;
4830
4831 let mut old_worktrees_by_id = this
4832 .worktrees
4833 .drain(..)
4834 .filter_map(|worktree| {
4835 let worktree = worktree.upgrade(cx)?;
4836 Some((worktree.read(cx).id(), worktree))
4837 })
4838 .collect::<HashMap<_, _>>();
4839
4840 for worktree in envelope.payload.worktrees {
4841 if let Some(old_worktree) =
4842 old_worktrees_by_id.remove(&WorktreeId::from_proto(worktree.id))
4843 {
4844 this.worktrees.push(WorktreeHandle::Strong(old_worktree));
4845 } else {
4846 let worktree =
4847 Worktree::remote(remote_id, replica_id, worktree, client.clone(), cx);
4848 this.add_worktree(&worktree, cx);
4849 }
4850 }
4851
4852 this.metadata_changed(true, cx);
4853 for (id, _) in old_worktrees_by_id {
4854 cx.emit(Event::WorktreeRemoved(id));
4855 }
4856
4857 Ok(())
4858 })
4859 }
4860
4861 async fn handle_update_worktree(
4862 this: ModelHandle<Self>,
4863 envelope: TypedEnvelope<proto::UpdateWorktree>,
4864 _: Arc<Client>,
4865 mut cx: AsyncAppContext,
4866 ) -> Result<()> {
4867 this.update(&mut cx, |this, cx| {
4868 let worktree_id = WorktreeId::from_proto(envelope.payload.worktree_id);
4869 if let Some(worktree) = this.worktree_for_id(worktree_id, cx) {
4870 worktree.update(cx, |worktree, _| {
4871 let worktree = worktree.as_remote_mut().unwrap();
4872 worktree.update_from_remote(envelope.payload);
4873 });
4874 }
4875 Ok(())
4876 })
4877 }
4878
4879 async fn handle_create_project_entry(
4880 this: ModelHandle<Self>,
4881 envelope: TypedEnvelope<proto::CreateProjectEntry>,
4882 _: Arc<Client>,
4883 mut cx: AsyncAppContext,
4884 ) -> Result<proto::ProjectEntryResponse> {
4885 let worktree = this.update(&mut cx, |this, cx| {
4886 let worktree_id = WorktreeId::from_proto(envelope.payload.worktree_id);
4887 this.worktree_for_id(worktree_id, cx)
4888 .ok_or_else(|| anyhow!("worktree not found"))
4889 })?;
4890 let worktree_scan_id = worktree.read_with(&cx, |worktree, _| worktree.scan_id());
4891 let entry = worktree
4892 .update(&mut cx, |worktree, cx| {
4893 let worktree = worktree.as_local_mut().unwrap();
4894 let path = PathBuf::from(OsString::from_vec(envelope.payload.path));
4895 worktree.create_entry(path, envelope.payload.is_directory, cx)
4896 })
4897 .await?;
4898 Ok(proto::ProjectEntryResponse {
4899 entry: Some((&entry).into()),
4900 worktree_scan_id: worktree_scan_id as u64,
4901 })
4902 }
4903
4904 async fn handle_rename_project_entry(
4905 this: ModelHandle<Self>,
4906 envelope: TypedEnvelope<proto::RenameProjectEntry>,
4907 _: Arc<Client>,
4908 mut cx: AsyncAppContext,
4909 ) -> Result<proto::ProjectEntryResponse> {
4910 let entry_id = ProjectEntryId::from_proto(envelope.payload.entry_id);
4911 let worktree = this.read_with(&cx, |this, cx| {
4912 this.worktree_for_entry(entry_id, cx)
4913 .ok_or_else(|| anyhow!("worktree not found"))
4914 })?;
4915 let worktree_scan_id = worktree.read_with(&cx, |worktree, _| worktree.scan_id());
4916 let entry = worktree
4917 .update(&mut cx, |worktree, cx| {
4918 let new_path = PathBuf::from(OsString::from_vec(envelope.payload.new_path));
4919 worktree
4920 .as_local_mut()
4921 .unwrap()
4922 .rename_entry(entry_id, new_path, cx)
4923 .ok_or_else(|| anyhow!("invalid entry"))
4924 })?
4925 .await?;
4926 Ok(proto::ProjectEntryResponse {
4927 entry: Some((&entry).into()),
4928 worktree_scan_id: worktree_scan_id as u64,
4929 })
4930 }
4931
4932 async fn handle_copy_project_entry(
4933 this: ModelHandle<Self>,
4934 envelope: TypedEnvelope<proto::CopyProjectEntry>,
4935 _: Arc<Client>,
4936 mut cx: AsyncAppContext,
4937 ) -> Result<proto::ProjectEntryResponse> {
4938 let entry_id = ProjectEntryId::from_proto(envelope.payload.entry_id);
4939 let worktree = this.read_with(&cx, |this, cx| {
4940 this.worktree_for_entry(entry_id, cx)
4941 .ok_or_else(|| anyhow!("worktree not found"))
4942 })?;
4943 let worktree_scan_id = worktree.read_with(&cx, |worktree, _| worktree.scan_id());
4944 let entry = worktree
4945 .update(&mut cx, |worktree, cx| {
4946 let new_path = PathBuf::from(OsString::from_vec(envelope.payload.new_path));
4947 worktree
4948 .as_local_mut()
4949 .unwrap()
4950 .copy_entry(entry_id, new_path, cx)
4951 .ok_or_else(|| anyhow!("invalid entry"))
4952 })?
4953 .await?;
4954 Ok(proto::ProjectEntryResponse {
4955 entry: Some((&entry).into()),
4956 worktree_scan_id: worktree_scan_id as u64,
4957 })
4958 }
4959
4960 async fn handle_delete_project_entry(
4961 this: ModelHandle<Self>,
4962 envelope: TypedEnvelope<proto::DeleteProjectEntry>,
4963 _: Arc<Client>,
4964 mut cx: AsyncAppContext,
4965 ) -> Result<proto::ProjectEntryResponse> {
4966 let entry_id = ProjectEntryId::from_proto(envelope.payload.entry_id);
4967 let worktree = this.read_with(&cx, |this, cx| {
4968 this.worktree_for_entry(entry_id, cx)
4969 .ok_or_else(|| anyhow!("worktree not found"))
4970 })?;
4971 let worktree_scan_id = worktree.read_with(&cx, |worktree, _| worktree.scan_id());
4972 worktree
4973 .update(&mut cx, |worktree, cx| {
4974 worktree
4975 .as_local_mut()
4976 .unwrap()
4977 .delete_entry(entry_id, cx)
4978 .ok_or_else(|| anyhow!("invalid entry"))
4979 })?
4980 .await?;
4981 Ok(proto::ProjectEntryResponse {
4982 entry: None,
4983 worktree_scan_id: worktree_scan_id as u64,
4984 })
4985 }
4986
4987 async fn handle_update_diagnostic_summary(
4988 this: ModelHandle<Self>,
4989 envelope: TypedEnvelope<proto::UpdateDiagnosticSummary>,
4990 _: Arc<Client>,
4991 mut cx: AsyncAppContext,
4992 ) -> Result<()> {
4993 this.update(&mut cx, |this, cx| {
4994 let worktree_id = WorktreeId::from_proto(envelope.payload.worktree_id);
4995 if let Some(worktree) = this.worktree_for_id(worktree_id, cx) {
4996 if let Some(summary) = envelope.payload.summary {
4997 let project_path = ProjectPath {
4998 worktree_id,
4999 path: Path::new(&summary.path).into(),
5000 };
5001 worktree.update(cx, |worktree, _| {
5002 worktree
5003 .as_remote_mut()
5004 .unwrap()
5005 .update_diagnostic_summary(project_path.path.clone(), &summary);
5006 });
5007 cx.emit(Event::DiagnosticsUpdated {
5008 language_server_id: summary.language_server_id as usize,
5009 path: project_path,
5010 });
5011 }
5012 }
5013 Ok(())
5014 })
5015 }
5016
5017 async fn handle_start_language_server(
5018 this: ModelHandle<Self>,
5019 envelope: TypedEnvelope<proto::StartLanguageServer>,
5020 _: Arc<Client>,
5021 mut cx: AsyncAppContext,
5022 ) -> Result<()> {
5023 let server = envelope
5024 .payload
5025 .server
5026 .ok_or_else(|| anyhow!("invalid server"))?;
5027 this.update(&mut cx, |this, cx| {
5028 this.language_server_statuses.insert(
5029 server.id as usize,
5030 LanguageServerStatus {
5031 name: server.name,
5032 pending_work: Default::default(),
5033 has_pending_diagnostic_updates: false,
5034 progress_tokens: Default::default(),
5035 },
5036 );
5037 cx.notify();
5038 });
5039 Ok(())
5040 }
5041
5042 async fn handle_update_language_server(
5043 this: ModelHandle<Self>,
5044 envelope: TypedEnvelope<proto::UpdateLanguageServer>,
5045 _: Arc<Client>,
5046 mut cx: AsyncAppContext,
5047 ) -> Result<()> {
5048 let language_server_id = envelope.payload.language_server_id as usize;
5049 match envelope
5050 .payload
5051 .variant
5052 .ok_or_else(|| anyhow!("invalid variant"))?
5053 {
5054 proto::update_language_server::Variant::WorkStart(payload) => {
5055 this.update(&mut cx, |this, cx| {
5056 this.on_lsp_work_start(
5057 language_server_id,
5058 payload.token,
5059 LanguageServerProgress {
5060 message: payload.message,
5061 percentage: payload.percentage.map(|p| p as usize),
5062 last_update_at: Instant::now(),
5063 },
5064 cx,
5065 );
5066 })
5067 }
5068 proto::update_language_server::Variant::WorkProgress(payload) => {
5069 this.update(&mut cx, |this, cx| {
5070 this.on_lsp_work_progress(
5071 language_server_id,
5072 payload.token,
5073 LanguageServerProgress {
5074 message: payload.message,
5075 percentage: payload.percentage.map(|p| p as usize),
5076 last_update_at: Instant::now(),
5077 },
5078 cx,
5079 );
5080 })
5081 }
5082 proto::update_language_server::Variant::WorkEnd(payload) => {
5083 this.update(&mut cx, |this, cx| {
5084 this.on_lsp_work_end(language_server_id, payload.token, cx);
5085 })
5086 }
5087 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdating(_) => {
5088 this.update(&mut cx, |this, cx| {
5089 this.disk_based_diagnostics_started(language_server_id, cx);
5090 })
5091 }
5092 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(_) => {
5093 this.update(&mut cx, |this, cx| {
5094 this.disk_based_diagnostics_finished(language_server_id, cx)
5095 });
5096 }
5097 }
5098
5099 Ok(())
5100 }
5101
5102 async fn handle_update_buffer(
5103 this: ModelHandle<Self>,
5104 envelope: TypedEnvelope<proto::UpdateBuffer>,
5105 _: Arc<Client>,
5106 mut cx: AsyncAppContext,
5107 ) -> Result<()> {
5108 this.update(&mut cx, |this, cx| {
5109 let payload = envelope.payload.clone();
5110 let buffer_id = payload.buffer_id;
5111 let ops = payload
5112 .operations
5113 .into_iter()
5114 .map(|op| language::proto::deserialize_operation(op))
5115 .collect::<Result<Vec<_>, _>>()?;
5116 let is_remote = this.is_remote();
5117 match this.opened_buffers.entry(buffer_id) {
5118 hash_map::Entry::Occupied(mut e) => match e.get_mut() {
5119 OpenBuffer::Strong(buffer) => {
5120 buffer.update(cx, |buffer, cx| buffer.apply_ops(ops, cx))?;
5121 }
5122 OpenBuffer::Loading(operations) => operations.extend_from_slice(&ops),
5123 OpenBuffer::Weak(_) => {}
5124 },
5125 hash_map::Entry::Vacant(e) => {
5126 assert!(
5127 is_remote,
5128 "received buffer update from {:?}",
5129 envelope.original_sender_id
5130 );
5131 e.insert(OpenBuffer::Loading(ops));
5132 }
5133 }
5134 Ok(())
5135 })
5136 }
5137
5138 async fn handle_update_buffer_file(
5139 this: ModelHandle<Self>,
5140 envelope: TypedEnvelope<proto::UpdateBufferFile>,
5141 _: Arc<Client>,
5142 mut cx: AsyncAppContext,
5143 ) -> Result<()> {
5144 this.update(&mut cx, |this, cx| {
5145 let payload = envelope.payload.clone();
5146 let buffer_id = payload.buffer_id;
5147 let file = payload.file.ok_or_else(|| anyhow!("invalid file"))?;
5148 let worktree = this
5149 .worktree_for_id(WorktreeId::from_proto(file.worktree_id), cx)
5150 .ok_or_else(|| anyhow!("no such worktree"))?;
5151 let file = File::from_proto(file, worktree.clone(), cx)?;
5152 let buffer = this
5153 .opened_buffers
5154 .get_mut(&buffer_id)
5155 .and_then(|b| b.upgrade(cx))
5156 .ok_or_else(|| anyhow!("no such buffer"))?;
5157 buffer.update(cx, |buffer, cx| {
5158 buffer.file_updated(Arc::new(file), cx).detach();
5159 });
5160 Ok(())
5161 })
5162 }
5163
5164 async fn handle_save_buffer(
5165 this: ModelHandle<Self>,
5166 envelope: TypedEnvelope<proto::SaveBuffer>,
5167 _: Arc<Client>,
5168 mut cx: AsyncAppContext,
5169 ) -> Result<proto::BufferSaved> {
5170 let buffer_id = envelope.payload.buffer_id;
5171 let requested_version = deserialize_version(envelope.payload.version);
5172
5173 let (project_id, buffer) = this.update(&mut cx, |this, cx| {
5174 let project_id = this.remote_id().ok_or_else(|| anyhow!("not connected"))?;
5175 let buffer = this
5176 .opened_buffers
5177 .get(&buffer_id)
5178 .and_then(|buffer| buffer.upgrade(cx))
5179 .ok_or_else(|| anyhow!("unknown buffer id {}", buffer_id))?;
5180 Ok::<_, anyhow::Error>((project_id, buffer))
5181 })?;
5182 buffer
5183 .update(&mut cx, |buffer, _| {
5184 buffer.wait_for_version(requested_version)
5185 })
5186 .await;
5187
5188 let (saved_version, fingerprint, mtime) =
5189 buffer.update(&mut cx, |buffer, cx| buffer.save(cx)).await?;
5190 Ok(proto::BufferSaved {
5191 project_id,
5192 buffer_id,
5193 version: serialize_version(&saved_version),
5194 mtime: Some(mtime.into()),
5195 fingerprint,
5196 })
5197 }
5198
5199 async fn handle_reload_buffers(
5200 this: ModelHandle<Self>,
5201 envelope: TypedEnvelope<proto::ReloadBuffers>,
5202 _: Arc<Client>,
5203 mut cx: AsyncAppContext,
5204 ) -> Result<proto::ReloadBuffersResponse> {
5205 let sender_id = envelope.original_sender_id()?;
5206 let reload = this.update(&mut cx, |this, cx| {
5207 let mut buffers = HashSet::default();
5208 for buffer_id in &envelope.payload.buffer_ids {
5209 buffers.insert(
5210 this.opened_buffers
5211 .get(buffer_id)
5212 .and_then(|buffer| buffer.upgrade(cx))
5213 .ok_or_else(|| anyhow!("unknown buffer id {}", buffer_id))?,
5214 );
5215 }
5216 Ok::<_, anyhow::Error>(this.reload_buffers(buffers, false, cx))
5217 })?;
5218
5219 let project_transaction = reload.await?;
5220 let project_transaction = this.update(&mut cx, |this, cx| {
5221 this.serialize_project_transaction_for_peer(project_transaction, sender_id, cx)
5222 });
5223 Ok(proto::ReloadBuffersResponse {
5224 transaction: Some(project_transaction),
5225 })
5226 }
5227
5228 async fn handle_format_buffers(
5229 this: ModelHandle<Self>,
5230 envelope: TypedEnvelope<proto::FormatBuffers>,
5231 _: Arc<Client>,
5232 mut cx: AsyncAppContext,
5233 ) -> Result<proto::FormatBuffersResponse> {
5234 let sender_id = envelope.original_sender_id()?;
5235 let format = this.update(&mut cx, |this, cx| {
5236 let mut buffers = HashSet::default();
5237 for buffer_id in &envelope.payload.buffer_ids {
5238 buffers.insert(
5239 this.opened_buffers
5240 .get(buffer_id)
5241 .and_then(|buffer| buffer.upgrade(cx))
5242 .ok_or_else(|| anyhow!("unknown buffer id {}", buffer_id))?,
5243 );
5244 }
5245 Ok::<_, anyhow::Error>(this.format(buffers, false, cx))
5246 })?;
5247
5248 let project_transaction = format.await?;
5249 let project_transaction = this.update(&mut cx, |this, cx| {
5250 this.serialize_project_transaction_for_peer(project_transaction, sender_id, cx)
5251 });
5252 Ok(proto::FormatBuffersResponse {
5253 transaction: Some(project_transaction),
5254 })
5255 }
5256
5257 async fn handle_get_completions(
5258 this: ModelHandle<Self>,
5259 envelope: TypedEnvelope<proto::GetCompletions>,
5260 _: Arc<Client>,
5261 mut cx: AsyncAppContext,
5262 ) -> Result<proto::GetCompletionsResponse> {
5263 let position = envelope
5264 .payload
5265 .position
5266 .and_then(language::proto::deserialize_anchor)
5267 .ok_or_else(|| anyhow!("invalid position"))?;
5268 let version = deserialize_version(envelope.payload.version);
5269 let buffer = this.read_with(&cx, |this, cx| {
5270 this.opened_buffers
5271 .get(&envelope.payload.buffer_id)
5272 .and_then(|buffer| buffer.upgrade(cx))
5273 .ok_or_else(|| anyhow!("unknown buffer id {}", envelope.payload.buffer_id))
5274 })?;
5275 buffer
5276 .update(&mut cx, |buffer, _| buffer.wait_for_version(version))
5277 .await;
5278 let version = buffer.read_with(&cx, |buffer, _| buffer.version());
5279 let completions = this
5280 .update(&mut cx, |this, cx| this.completions(&buffer, position, cx))
5281 .await?;
5282
5283 Ok(proto::GetCompletionsResponse {
5284 completions: completions
5285 .iter()
5286 .map(language::proto::serialize_completion)
5287 .collect(),
5288 version: serialize_version(&version),
5289 })
5290 }
5291
5292 async fn handle_apply_additional_edits_for_completion(
5293 this: ModelHandle<Self>,
5294 envelope: TypedEnvelope<proto::ApplyCompletionAdditionalEdits>,
5295 _: Arc<Client>,
5296 mut cx: AsyncAppContext,
5297 ) -> Result<proto::ApplyCompletionAdditionalEditsResponse> {
5298 let (buffer, completion) = this.update(&mut cx, |this, cx| {
5299 let buffer = this
5300 .opened_buffers
5301 .get(&envelope.payload.buffer_id)
5302 .and_then(|buffer| buffer.upgrade(cx))
5303 .ok_or_else(|| anyhow!("unknown buffer id {}", envelope.payload.buffer_id))?;
5304 let language = buffer.read(cx).language();
5305 let completion = language::proto::deserialize_completion(
5306 envelope
5307 .payload
5308 .completion
5309 .ok_or_else(|| anyhow!("invalid completion"))?,
5310 language.cloned(),
5311 );
5312 Ok::<_, anyhow::Error>((buffer, completion))
5313 })?;
5314
5315 let completion = completion.await?;
5316
5317 let apply_additional_edits = this.update(&mut cx, |this, cx| {
5318 this.apply_additional_edits_for_completion(buffer, completion, false, cx)
5319 });
5320
5321 Ok(proto::ApplyCompletionAdditionalEditsResponse {
5322 transaction: apply_additional_edits
5323 .await?
5324 .as_ref()
5325 .map(language::proto::serialize_transaction),
5326 })
5327 }
5328
5329 async fn handle_get_code_actions(
5330 this: ModelHandle<Self>,
5331 envelope: TypedEnvelope<proto::GetCodeActions>,
5332 _: Arc<Client>,
5333 mut cx: AsyncAppContext,
5334 ) -> Result<proto::GetCodeActionsResponse> {
5335 let start = envelope
5336 .payload
5337 .start
5338 .and_then(language::proto::deserialize_anchor)
5339 .ok_or_else(|| anyhow!("invalid start"))?;
5340 let end = envelope
5341 .payload
5342 .end
5343 .and_then(language::proto::deserialize_anchor)
5344 .ok_or_else(|| anyhow!("invalid end"))?;
5345 let buffer = this.update(&mut cx, |this, cx| {
5346 this.opened_buffers
5347 .get(&envelope.payload.buffer_id)
5348 .and_then(|buffer| buffer.upgrade(cx))
5349 .ok_or_else(|| anyhow!("unknown buffer id {}", envelope.payload.buffer_id))
5350 })?;
5351 buffer
5352 .update(&mut cx, |buffer, _| {
5353 buffer.wait_for_version(deserialize_version(envelope.payload.version))
5354 })
5355 .await;
5356
5357 let version = buffer.read_with(&cx, |buffer, _| buffer.version());
5358 let code_actions = this.update(&mut cx, |this, cx| {
5359 Ok::<_, anyhow::Error>(this.code_actions(&buffer, start..end, cx))
5360 })?;
5361
5362 Ok(proto::GetCodeActionsResponse {
5363 actions: code_actions
5364 .await?
5365 .iter()
5366 .map(language::proto::serialize_code_action)
5367 .collect(),
5368 version: serialize_version(&version),
5369 })
5370 }
5371
5372 async fn handle_apply_code_action(
5373 this: ModelHandle<Self>,
5374 envelope: TypedEnvelope<proto::ApplyCodeAction>,
5375 _: Arc<Client>,
5376 mut cx: AsyncAppContext,
5377 ) -> Result<proto::ApplyCodeActionResponse> {
5378 let sender_id = envelope.original_sender_id()?;
5379 let action = language::proto::deserialize_code_action(
5380 envelope
5381 .payload
5382 .action
5383 .ok_or_else(|| anyhow!("invalid action"))?,
5384 )?;
5385 let apply_code_action = this.update(&mut cx, |this, cx| {
5386 let buffer = this
5387 .opened_buffers
5388 .get(&envelope.payload.buffer_id)
5389 .and_then(|buffer| buffer.upgrade(cx))
5390 .ok_or_else(|| anyhow!("unknown buffer id {}", envelope.payload.buffer_id))?;
5391 Ok::<_, anyhow::Error>(this.apply_code_action(buffer, action, false, cx))
5392 })?;
5393
5394 let project_transaction = apply_code_action.await?;
5395 let project_transaction = this.update(&mut cx, |this, cx| {
5396 this.serialize_project_transaction_for_peer(project_transaction, sender_id, cx)
5397 });
5398 Ok(proto::ApplyCodeActionResponse {
5399 transaction: Some(project_transaction),
5400 })
5401 }
5402
5403 async fn handle_lsp_command<T: LspCommand>(
5404 this: ModelHandle<Self>,
5405 envelope: TypedEnvelope<T::ProtoRequest>,
5406 _: Arc<Client>,
5407 mut cx: AsyncAppContext,
5408 ) -> Result<<T::ProtoRequest as proto::RequestMessage>::Response>
5409 where
5410 <T::LspRequest as lsp::request::Request>::Result: Send,
5411 {
5412 let sender_id = envelope.original_sender_id()?;
5413 let buffer_id = T::buffer_id_from_proto(&envelope.payload);
5414 let buffer_handle = this.read_with(&cx, |this, _| {
5415 this.opened_buffers
5416 .get(&buffer_id)
5417 .and_then(|buffer| buffer.upgrade(&cx))
5418 .ok_or_else(|| anyhow!("unknown buffer id {}", buffer_id))
5419 })?;
5420 let request = T::from_proto(
5421 envelope.payload,
5422 this.clone(),
5423 buffer_handle.clone(),
5424 cx.clone(),
5425 )
5426 .await?;
5427 let buffer_version = buffer_handle.read_with(&cx, |buffer, _| buffer.version());
5428 let response = this
5429 .update(&mut cx, |this, cx| {
5430 this.request_lsp(buffer_handle, request, cx)
5431 })
5432 .await?;
5433 this.update(&mut cx, |this, cx| {
5434 Ok(T::response_to_proto(
5435 response,
5436 this,
5437 sender_id,
5438 &buffer_version,
5439 cx,
5440 ))
5441 })
5442 }
5443
5444 async fn handle_get_project_symbols(
5445 this: ModelHandle<Self>,
5446 envelope: TypedEnvelope<proto::GetProjectSymbols>,
5447 _: Arc<Client>,
5448 mut cx: AsyncAppContext,
5449 ) -> Result<proto::GetProjectSymbolsResponse> {
5450 let symbols = this
5451 .update(&mut cx, |this, cx| {
5452 this.symbols(&envelope.payload.query, cx)
5453 })
5454 .await?;
5455
5456 Ok(proto::GetProjectSymbolsResponse {
5457 symbols: symbols.iter().map(serialize_symbol).collect(),
5458 })
5459 }
5460
5461 async fn handle_search_project(
5462 this: ModelHandle<Self>,
5463 envelope: TypedEnvelope<proto::SearchProject>,
5464 _: Arc<Client>,
5465 mut cx: AsyncAppContext,
5466 ) -> Result<proto::SearchProjectResponse> {
5467 let peer_id = envelope.original_sender_id()?;
5468 let query = SearchQuery::from_proto(envelope.payload)?;
5469 let result = this
5470 .update(&mut cx, |this, cx| this.search(query, cx))
5471 .await?;
5472
5473 this.update(&mut cx, |this, cx| {
5474 let mut locations = Vec::new();
5475 for (buffer, ranges) in result {
5476 for range in ranges {
5477 let start = serialize_anchor(&range.start);
5478 let end = serialize_anchor(&range.end);
5479 let buffer = this.serialize_buffer_for_peer(&buffer, peer_id, cx);
5480 locations.push(proto::Location {
5481 buffer: Some(buffer),
5482 start: Some(start),
5483 end: Some(end),
5484 });
5485 }
5486 }
5487 Ok(proto::SearchProjectResponse { locations })
5488 })
5489 }
5490
5491 async fn handle_open_buffer_for_symbol(
5492 this: ModelHandle<Self>,
5493 envelope: TypedEnvelope<proto::OpenBufferForSymbol>,
5494 _: Arc<Client>,
5495 mut cx: AsyncAppContext,
5496 ) -> Result<proto::OpenBufferForSymbolResponse> {
5497 let peer_id = envelope.original_sender_id()?;
5498 let symbol = envelope
5499 .payload
5500 .symbol
5501 .ok_or_else(|| anyhow!("invalid symbol"))?;
5502 let symbol = this
5503 .read_with(&cx, |this, _| this.deserialize_symbol(symbol))
5504 .await?;
5505 let symbol = this.read_with(&cx, |this, _| {
5506 let signature = this.symbol_signature(symbol.worktree_id, &symbol.path);
5507 if signature == symbol.signature {
5508 Ok(symbol)
5509 } else {
5510 Err(anyhow!("invalid symbol signature"))
5511 }
5512 })?;
5513 let buffer = this
5514 .update(&mut cx, |this, cx| this.open_buffer_for_symbol(&symbol, cx))
5515 .await?;
5516
5517 Ok(proto::OpenBufferForSymbolResponse {
5518 buffer: Some(this.update(&mut cx, |this, cx| {
5519 this.serialize_buffer_for_peer(&buffer, peer_id, cx)
5520 })),
5521 })
5522 }
5523
5524 fn symbol_signature(&self, worktree_id: WorktreeId, path: &Path) -> [u8; 32] {
5525 let mut hasher = Sha256::new();
5526 hasher.update(worktree_id.to_proto().to_be_bytes());
5527 hasher.update(path.to_string_lossy().as_bytes());
5528 hasher.update(self.nonce.to_be_bytes());
5529 hasher.finalize().as_slice().try_into().unwrap()
5530 }
5531
5532 async fn handle_open_buffer_by_id(
5533 this: ModelHandle<Self>,
5534 envelope: TypedEnvelope<proto::OpenBufferById>,
5535 _: Arc<Client>,
5536 mut cx: AsyncAppContext,
5537 ) -> Result<proto::OpenBufferResponse> {
5538 let peer_id = envelope.original_sender_id()?;
5539 let buffer = this
5540 .update(&mut cx, |this, cx| {
5541 this.open_buffer_by_id(envelope.payload.id, cx)
5542 })
5543 .await?;
5544 this.update(&mut cx, |this, cx| {
5545 Ok(proto::OpenBufferResponse {
5546 buffer: Some(this.serialize_buffer_for_peer(&buffer, peer_id, cx)),
5547 })
5548 })
5549 }
5550
5551 async fn handle_open_buffer_by_path(
5552 this: ModelHandle<Self>,
5553 envelope: TypedEnvelope<proto::OpenBufferByPath>,
5554 _: Arc<Client>,
5555 mut cx: AsyncAppContext,
5556 ) -> Result<proto::OpenBufferResponse> {
5557 let peer_id = envelope.original_sender_id()?;
5558 let worktree_id = WorktreeId::from_proto(envelope.payload.worktree_id);
5559 let open_buffer = this.update(&mut cx, |this, cx| {
5560 this.open_buffer(
5561 ProjectPath {
5562 worktree_id,
5563 path: PathBuf::from(envelope.payload.path).into(),
5564 },
5565 cx,
5566 )
5567 });
5568
5569 let buffer = open_buffer.await?;
5570 this.update(&mut cx, |this, cx| {
5571 Ok(proto::OpenBufferResponse {
5572 buffer: Some(this.serialize_buffer_for_peer(&buffer, peer_id, cx)),
5573 })
5574 })
5575 }
5576
5577 fn serialize_project_transaction_for_peer(
5578 &mut self,
5579 project_transaction: ProjectTransaction,
5580 peer_id: PeerId,
5581 cx: &AppContext,
5582 ) -> proto::ProjectTransaction {
5583 let mut serialized_transaction = proto::ProjectTransaction {
5584 buffers: Default::default(),
5585 transactions: Default::default(),
5586 };
5587 for (buffer, transaction) in project_transaction.0 {
5588 serialized_transaction
5589 .buffers
5590 .push(self.serialize_buffer_for_peer(&buffer, peer_id, cx));
5591 serialized_transaction
5592 .transactions
5593 .push(language::proto::serialize_transaction(&transaction));
5594 }
5595 serialized_transaction
5596 }
5597
5598 fn deserialize_project_transaction(
5599 &mut self,
5600 message: proto::ProjectTransaction,
5601 push_to_history: bool,
5602 cx: &mut ModelContext<Self>,
5603 ) -> Task<Result<ProjectTransaction>> {
5604 cx.spawn(|this, mut cx| async move {
5605 let mut project_transaction = ProjectTransaction::default();
5606 for (buffer, transaction) in message.buffers.into_iter().zip(message.transactions) {
5607 let buffer = this
5608 .update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
5609 .await?;
5610 let transaction = language::proto::deserialize_transaction(transaction)?;
5611 project_transaction.0.insert(buffer, transaction);
5612 }
5613
5614 for (buffer, transaction) in &project_transaction.0 {
5615 buffer
5616 .update(&mut cx, |buffer, _| {
5617 buffer.wait_for_edits(transaction.edit_ids.iter().copied())
5618 })
5619 .await;
5620
5621 if push_to_history {
5622 buffer.update(&mut cx, |buffer, _| {
5623 buffer.push_transaction(transaction.clone(), Instant::now());
5624 });
5625 }
5626 }
5627
5628 Ok(project_transaction)
5629 })
5630 }
5631
5632 fn serialize_buffer_for_peer(
5633 &mut self,
5634 buffer: &ModelHandle<Buffer>,
5635 peer_id: PeerId,
5636 cx: &AppContext,
5637 ) -> proto::Buffer {
5638 let buffer_id = buffer.read(cx).remote_id();
5639 let shared_buffers = self.shared_buffers.entry(peer_id).or_default();
5640 if shared_buffers.insert(buffer_id) {
5641 proto::Buffer {
5642 variant: Some(proto::buffer::Variant::State(buffer.read(cx).to_proto())),
5643 }
5644 } else {
5645 proto::Buffer {
5646 variant: Some(proto::buffer::Variant::Id(buffer_id)),
5647 }
5648 }
5649 }
5650
5651 fn deserialize_buffer(
5652 &mut self,
5653 buffer: proto::Buffer,
5654 cx: &mut ModelContext<Self>,
5655 ) -> Task<Result<ModelHandle<Buffer>>> {
5656 let replica_id = self.replica_id();
5657
5658 let opened_buffer_tx = self.opened_buffer.0.clone();
5659 let mut opened_buffer_rx = self.opened_buffer.1.clone();
5660 cx.spawn(|this, mut cx| async move {
5661 match buffer.variant.ok_or_else(|| anyhow!("missing buffer"))? {
5662 proto::buffer::Variant::Id(id) => {
5663 let buffer = loop {
5664 let buffer = this.read_with(&cx, |this, cx| {
5665 this.opened_buffers
5666 .get(&id)
5667 .and_then(|buffer| buffer.upgrade(cx))
5668 });
5669 if let Some(buffer) = buffer {
5670 break buffer;
5671 }
5672 opened_buffer_rx
5673 .next()
5674 .await
5675 .ok_or_else(|| anyhow!("project dropped while waiting for buffer"))?;
5676 };
5677 Ok(buffer)
5678 }
5679 proto::buffer::Variant::State(mut buffer) => {
5680 let mut buffer_worktree = None;
5681 let mut buffer_file = None;
5682 if let Some(file) = buffer.file.take() {
5683 this.read_with(&cx, |this, cx| {
5684 let worktree_id = WorktreeId::from_proto(file.worktree_id);
5685 let worktree =
5686 this.worktree_for_id(worktree_id, cx).ok_or_else(|| {
5687 anyhow!("no worktree found for id {}", file.worktree_id)
5688 })?;
5689 buffer_file =
5690 Some(Arc::new(File::from_proto(file, worktree.clone(), cx)?)
5691 as Arc<dyn language::File>);
5692 buffer_worktree = Some(worktree);
5693 Ok::<_, anyhow::Error>(())
5694 })?;
5695 }
5696
5697 let buffer = cx.add_model(|cx| {
5698 Buffer::from_proto(replica_id, buffer, buffer_file, cx).unwrap()
5699 });
5700
5701 this.update(&mut cx, |this, cx| this.register_buffer(&buffer, cx))?;
5702
5703 *opened_buffer_tx.borrow_mut().borrow_mut() = ();
5704 Ok(buffer)
5705 }
5706 }
5707 })
5708 }
5709
5710 fn deserialize_symbol(
5711 &self,
5712 serialized_symbol: proto::Symbol,
5713 ) -> impl Future<Output = Result<Symbol>> {
5714 let languages = self.languages.clone();
5715 async move {
5716 let source_worktree_id = WorktreeId::from_proto(serialized_symbol.source_worktree_id);
5717 let worktree_id = WorktreeId::from_proto(serialized_symbol.worktree_id);
5718 let start = serialized_symbol
5719 .start
5720 .ok_or_else(|| anyhow!("invalid start"))?;
5721 let end = serialized_symbol
5722 .end
5723 .ok_or_else(|| anyhow!("invalid end"))?;
5724 let kind = unsafe { mem::transmute(serialized_symbol.kind) };
5725 let path = PathBuf::from(serialized_symbol.path);
5726 let language = languages.select_language(&path);
5727 Ok(Symbol {
5728 source_worktree_id,
5729 worktree_id,
5730 language_server_name: LanguageServerName(
5731 serialized_symbol.language_server_name.into(),
5732 ),
5733 label: {
5734 match language {
5735 Some(language) => {
5736 language
5737 .label_for_symbol(&serialized_symbol.name, kind)
5738 .await
5739 }
5740 None => None,
5741 }
5742 .unwrap_or_else(|| CodeLabel::plain(serialized_symbol.name.clone(), None))
5743 },
5744
5745 name: serialized_symbol.name,
5746 path,
5747 range: PointUtf16::new(start.row, start.column)
5748 ..PointUtf16::new(end.row, end.column),
5749 kind,
5750 signature: serialized_symbol
5751 .signature
5752 .try_into()
5753 .map_err(|_| anyhow!("invalid signature"))?,
5754 })
5755 }
5756 }
5757
5758 async fn handle_buffer_saved(
5759 this: ModelHandle<Self>,
5760 envelope: TypedEnvelope<proto::BufferSaved>,
5761 _: Arc<Client>,
5762 mut cx: AsyncAppContext,
5763 ) -> Result<()> {
5764 let version = deserialize_version(envelope.payload.version);
5765 let mtime = envelope
5766 .payload
5767 .mtime
5768 .ok_or_else(|| anyhow!("missing mtime"))?
5769 .into();
5770
5771 this.update(&mut cx, |this, cx| {
5772 let buffer = this
5773 .opened_buffers
5774 .get(&envelope.payload.buffer_id)
5775 .and_then(|buffer| buffer.upgrade(cx));
5776 if let Some(buffer) = buffer {
5777 buffer.update(cx, |buffer, cx| {
5778 buffer.did_save(version, envelope.payload.fingerprint, mtime, None, cx);
5779 });
5780 }
5781 Ok(())
5782 })
5783 }
5784
5785 async fn handle_buffer_reloaded(
5786 this: ModelHandle<Self>,
5787 envelope: TypedEnvelope<proto::BufferReloaded>,
5788 _: Arc<Client>,
5789 mut cx: AsyncAppContext,
5790 ) -> Result<()> {
5791 let payload = envelope.payload;
5792 let version = deserialize_version(payload.version);
5793 let line_ending = deserialize_line_ending(
5794 proto::LineEnding::from_i32(payload.line_ending)
5795 .ok_or_else(|| anyhow!("missing line ending"))?,
5796 );
5797 let mtime = payload
5798 .mtime
5799 .ok_or_else(|| anyhow!("missing mtime"))?
5800 .into();
5801 this.update(&mut cx, |this, cx| {
5802 let buffer = this
5803 .opened_buffers
5804 .get(&payload.buffer_id)
5805 .and_then(|buffer| buffer.upgrade(cx));
5806 if let Some(buffer) = buffer {
5807 buffer.update(cx, |buffer, cx| {
5808 buffer.did_reload(version, payload.fingerprint, line_ending, mtime, cx);
5809 });
5810 }
5811 Ok(())
5812 })
5813 }
5814
5815 pub fn match_paths<'a>(
5816 &self,
5817 query: &'a str,
5818 include_ignored: bool,
5819 smart_case: bool,
5820 max_results: usize,
5821 cancel_flag: &'a AtomicBool,
5822 cx: &AppContext,
5823 ) -> impl 'a + Future<Output = Vec<PathMatch>> {
5824 let worktrees = self
5825 .worktrees(cx)
5826 .filter(|worktree| worktree.read(cx).is_visible())
5827 .collect::<Vec<_>>();
5828 let include_root_name = worktrees.len() > 1;
5829 let candidate_sets = worktrees
5830 .into_iter()
5831 .map(|worktree| CandidateSet {
5832 snapshot: worktree.read(cx).snapshot(),
5833 include_ignored,
5834 include_root_name,
5835 })
5836 .collect::<Vec<_>>();
5837
5838 let background = cx.background().clone();
5839 async move {
5840 fuzzy::match_paths(
5841 candidate_sets.as_slice(),
5842 query,
5843 smart_case,
5844 max_results,
5845 cancel_flag,
5846 background,
5847 )
5848 .await
5849 }
5850 }
5851
5852 fn edits_from_lsp(
5853 &mut self,
5854 buffer: &ModelHandle<Buffer>,
5855 lsp_edits: impl 'static + Send + IntoIterator<Item = lsp::TextEdit>,
5856 version: Option<i32>,
5857 cx: &mut ModelContext<Self>,
5858 ) -> Task<Result<Vec<(Range<Anchor>, String)>>> {
5859 let snapshot = self.buffer_snapshot_for_lsp_version(buffer, version, cx);
5860 cx.background().spawn(async move {
5861 let snapshot = snapshot?;
5862 let mut lsp_edits = lsp_edits
5863 .into_iter()
5864 .map(|edit| (range_from_lsp(edit.range), edit.new_text))
5865 .collect::<Vec<_>>();
5866 lsp_edits.sort_by_key(|(range, _)| range.start);
5867
5868 let mut lsp_edits = lsp_edits.into_iter().peekable();
5869 let mut edits = Vec::new();
5870 while let Some((mut range, mut new_text)) = lsp_edits.next() {
5871 // Combine any LSP edits that are adjacent.
5872 //
5873 // Also, combine LSP edits that are separated from each other by only
5874 // a newline. This is important because for some code actions,
5875 // Rust-analyzer rewrites the entire buffer via a series of edits that
5876 // are separated by unchanged newline characters.
5877 //
5878 // In order for the diffing logic below to work properly, any edits that
5879 // cancel each other out must be combined into one.
5880 while let Some((next_range, next_text)) = lsp_edits.peek() {
5881 if next_range.start > range.end {
5882 if next_range.start.row > range.end.row + 1
5883 || next_range.start.column > 0
5884 || snapshot.clip_point_utf16(
5885 PointUtf16::new(range.end.row, u32::MAX),
5886 Bias::Left,
5887 ) > range.end
5888 {
5889 break;
5890 }
5891 new_text.push('\n');
5892 }
5893 range.end = next_range.end;
5894 new_text.push_str(&next_text);
5895 lsp_edits.next();
5896 }
5897
5898 if snapshot.clip_point_utf16(range.start, Bias::Left) != range.start
5899 || snapshot.clip_point_utf16(range.end, Bias::Left) != range.end
5900 {
5901 return Err(anyhow!("invalid edits received from language server"));
5902 }
5903
5904 // For multiline edits, perform a diff of the old and new text so that
5905 // we can identify the changes more precisely, preserving the locations
5906 // of any anchors positioned in the unchanged regions.
5907 if range.end.row > range.start.row {
5908 let mut offset = range.start.to_offset(&snapshot);
5909 let old_text = snapshot.text_for_range(range).collect::<String>();
5910
5911 let diff = TextDiff::from_lines(old_text.as_str(), &new_text);
5912 let mut moved_since_edit = true;
5913 for change in diff.iter_all_changes() {
5914 let tag = change.tag();
5915 let value = change.value();
5916 match tag {
5917 ChangeTag::Equal => {
5918 offset += value.len();
5919 moved_since_edit = true;
5920 }
5921 ChangeTag::Delete => {
5922 let start = snapshot.anchor_after(offset);
5923 let end = snapshot.anchor_before(offset + value.len());
5924 if moved_since_edit {
5925 edits.push((start..end, String::new()));
5926 } else {
5927 edits.last_mut().unwrap().0.end = end;
5928 }
5929 offset += value.len();
5930 moved_since_edit = false;
5931 }
5932 ChangeTag::Insert => {
5933 if moved_since_edit {
5934 let anchor = snapshot.anchor_after(offset);
5935 edits.push((anchor.clone()..anchor, value.to_string()));
5936 } else {
5937 edits.last_mut().unwrap().1.push_str(value);
5938 }
5939 moved_since_edit = false;
5940 }
5941 }
5942 }
5943 } else if range.end == range.start {
5944 let anchor = snapshot.anchor_after(range.start);
5945 edits.push((anchor.clone()..anchor, new_text));
5946 } else {
5947 let edit_start = snapshot.anchor_after(range.start);
5948 let edit_end = snapshot.anchor_before(range.end);
5949 edits.push((edit_start..edit_end, new_text));
5950 }
5951 }
5952
5953 Ok(edits)
5954 })
5955 }
5956
5957 fn buffer_snapshot_for_lsp_version(
5958 &mut self,
5959 buffer: &ModelHandle<Buffer>,
5960 version: Option<i32>,
5961 cx: &AppContext,
5962 ) -> Result<TextBufferSnapshot> {
5963 const OLD_VERSIONS_TO_RETAIN: i32 = 10;
5964
5965 if let Some(version) = version {
5966 let buffer_id = buffer.read(cx).remote_id();
5967 let snapshots = self
5968 .buffer_snapshots
5969 .get_mut(&buffer_id)
5970 .ok_or_else(|| anyhow!("no snapshot found for buffer {}", buffer_id))?;
5971 let mut found_snapshot = None;
5972 snapshots.retain(|(snapshot_version, snapshot)| {
5973 if snapshot_version + OLD_VERSIONS_TO_RETAIN < version {
5974 false
5975 } else {
5976 if *snapshot_version == version {
5977 found_snapshot = Some(snapshot.clone());
5978 }
5979 true
5980 }
5981 });
5982
5983 found_snapshot.ok_or_else(|| {
5984 anyhow!(
5985 "snapshot not found for buffer {} at version {}",
5986 buffer_id,
5987 version
5988 )
5989 })
5990 } else {
5991 Ok((buffer.read(cx)).text_snapshot())
5992 }
5993 }
5994
5995 fn language_server_for_buffer(
5996 &self,
5997 buffer: &Buffer,
5998 cx: &AppContext,
5999 ) -> Option<(&Arc<LspAdapter>, &Arc<LanguageServer>)> {
6000 if let Some((file, language)) = File::from_dyn(buffer.file()).zip(buffer.language()) {
6001 let name = language.lsp_adapter()?.name.clone();
6002 let worktree_id = file.worktree_id(cx);
6003 let key = (worktree_id, name);
6004
6005 if let Some(server_id) = self.language_server_ids.get(&key) {
6006 if let Some(LanguageServerState::Running { adapter, server }) =
6007 self.language_servers.get(&server_id)
6008 {
6009 return Some((adapter, server));
6010 }
6011 }
6012 }
6013
6014 None
6015 }
6016}
6017
6018impl ProjectStore {
6019 pub fn new(db: Arc<Db>) -> Self {
6020 Self {
6021 db,
6022 projects: Default::default(),
6023 }
6024 }
6025
6026 pub fn projects<'a>(
6027 &'a self,
6028 cx: &'a AppContext,
6029 ) -> impl 'a + Iterator<Item = ModelHandle<Project>> {
6030 self.projects
6031 .iter()
6032 .filter_map(|project| project.upgrade(cx))
6033 }
6034
6035 fn add_project(&mut self, project: WeakModelHandle<Project>, cx: &mut ModelContext<Self>) {
6036 if let Err(ix) = self
6037 .projects
6038 .binary_search_by_key(&project.id(), WeakModelHandle::id)
6039 {
6040 self.projects.insert(ix, project);
6041 }
6042 cx.notify();
6043 }
6044
6045 fn prune_projects(&mut self, cx: &mut ModelContext<Self>) {
6046 let mut did_change = false;
6047 self.projects.retain(|project| {
6048 if project.is_upgradable(cx) {
6049 true
6050 } else {
6051 did_change = true;
6052 false
6053 }
6054 });
6055 if did_change {
6056 cx.notify();
6057 }
6058 }
6059}
6060
6061impl WorktreeHandle {
6062 pub fn upgrade(&self, cx: &AppContext) -> Option<ModelHandle<Worktree>> {
6063 match self {
6064 WorktreeHandle::Strong(handle) => Some(handle.clone()),
6065 WorktreeHandle::Weak(handle) => handle.upgrade(cx),
6066 }
6067 }
6068}
6069
6070impl OpenBuffer {
6071 pub fn upgrade(&self, cx: &impl UpgradeModelHandle) -> Option<ModelHandle<Buffer>> {
6072 match self {
6073 OpenBuffer::Strong(handle) => Some(handle.clone()),
6074 OpenBuffer::Weak(handle) => handle.upgrade(cx),
6075 OpenBuffer::Loading(_) => None,
6076 }
6077 }
6078}
6079
6080struct CandidateSet {
6081 snapshot: Snapshot,
6082 include_ignored: bool,
6083 include_root_name: bool,
6084}
6085
6086impl<'a> PathMatchCandidateSet<'a> for CandidateSet {
6087 type Candidates = CandidateSetIter<'a>;
6088
6089 fn id(&self) -> usize {
6090 self.snapshot.id().to_usize()
6091 }
6092
6093 fn len(&self) -> usize {
6094 if self.include_ignored {
6095 self.snapshot.file_count()
6096 } else {
6097 self.snapshot.visible_file_count()
6098 }
6099 }
6100
6101 fn prefix(&self) -> Arc<str> {
6102 if self.snapshot.root_entry().map_or(false, |e| e.is_file()) {
6103 self.snapshot.root_name().into()
6104 } else if self.include_root_name {
6105 format!("{}/", self.snapshot.root_name()).into()
6106 } else {
6107 "".into()
6108 }
6109 }
6110
6111 fn candidates(&'a self, start: usize) -> Self::Candidates {
6112 CandidateSetIter {
6113 traversal: self.snapshot.files(self.include_ignored, start),
6114 }
6115 }
6116}
6117
6118struct CandidateSetIter<'a> {
6119 traversal: Traversal<'a>,
6120}
6121
6122impl<'a> Iterator for CandidateSetIter<'a> {
6123 type Item = PathMatchCandidate<'a>;
6124
6125 fn next(&mut self) -> Option<Self::Item> {
6126 self.traversal.next().map(|entry| {
6127 if let EntryKind::File(char_bag) = entry.kind {
6128 PathMatchCandidate {
6129 path: &entry.path,
6130 char_bag,
6131 }
6132 } else {
6133 unreachable!()
6134 }
6135 })
6136 }
6137}
6138
6139impl Entity for ProjectStore {
6140 type Event = ();
6141}
6142
6143impl Entity for Project {
6144 type Event = Event;
6145
6146 fn release(&mut self, cx: &mut gpui::MutableAppContext) {
6147 self.project_store.update(cx, ProjectStore::prune_projects);
6148
6149 match &self.client_state {
6150 ProjectClientState::Local { remote_id_rx, .. } => {
6151 if let Some(project_id) = *remote_id_rx.borrow() {
6152 self.client
6153 .send(proto::UnregisterProject { project_id })
6154 .log_err();
6155 }
6156 }
6157 ProjectClientState::Remote { remote_id, .. } => {
6158 self.client
6159 .send(proto::LeaveProject {
6160 project_id: *remote_id,
6161 })
6162 .log_err();
6163 }
6164 }
6165 }
6166
6167 fn app_will_quit(
6168 &mut self,
6169 _: &mut MutableAppContext,
6170 ) -> Option<std::pin::Pin<Box<dyn 'static + Future<Output = ()>>>> {
6171 let shutdown_futures = self
6172 .language_servers
6173 .drain()
6174 .map(|(_, server_state)| async {
6175 match server_state {
6176 LanguageServerState::Running { server, .. } => server.shutdown()?.await,
6177 LanguageServerState::Starting(starting_server) => {
6178 starting_server.await?.shutdown()?.await
6179 }
6180 }
6181 })
6182 .collect::<Vec<_>>();
6183
6184 Some(
6185 async move {
6186 futures::future::join_all(shutdown_futures).await;
6187 }
6188 .boxed(),
6189 )
6190 }
6191}
6192
6193impl Collaborator {
6194 fn from_proto(
6195 message: proto::Collaborator,
6196 user_store: &ModelHandle<UserStore>,
6197 cx: &mut AsyncAppContext,
6198 ) -> impl Future<Output = Result<Self>> {
6199 let user = user_store.update(cx, |user_store, cx| {
6200 user_store.fetch_user(message.user_id, cx)
6201 });
6202
6203 async move {
6204 Ok(Self {
6205 peer_id: PeerId(message.peer_id),
6206 user: user.await?,
6207 replica_id: message.replica_id as ReplicaId,
6208 })
6209 }
6210 }
6211}
6212
6213impl<P: AsRef<Path>> From<(WorktreeId, P)> for ProjectPath {
6214 fn from((worktree_id, path): (WorktreeId, P)) -> Self {
6215 Self {
6216 worktree_id,
6217 path: path.as_ref().into(),
6218 }
6219 }
6220}
6221
6222impl From<lsp::CreateFileOptions> for fs::CreateOptions {
6223 fn from(options: lsp::CreateFileOptions) -> Self {
6224 Self {
6225 overwrite: options.overwrite.unwrap_or(false),
6226 ignore_if_exists: options.ignore_if_exists.unwrap_or(false),
6227 }
6228 }
6229}
6230
6231impl From<lsp::RenameFileOptions> for fs::RenameOptions {
6232 fn from(options: lsp::RenameFileOptions) -> Self {
6233 Self {
6234 overwrite: options.overwrite.unwrap_or(false),
6235 ignore_if_exists: options.ignore_if_exists.unwrap_or(false),
6236 }
6237 }
6238}
6239
6240impl From<lsp::DeleteFileOptions> for fs::RemoveOptions {
6241 fn from(options: lsp::DeleteFileOptions) -> Self {
6242 Self {
6243 recursive: options.recursive.unwrap_or(false),
6244 ignore_if_not_exists: options.ignore_if_not_exists.unwrap_or(false),
6245 }
6246 }
6247}
6248
6249fn serialize_symbol(symbol: &Symbol) -> proto::Symbol {
6250 proto::Symbol {
6251 source_worktree_id: symbol.source_worktree_id.to_proto(),
6252 worktree_id: symbol.worktree_id.to_proto(),
6253 language_server_name: symbol.language_server_name.0.to_string(),
6254 name: symbol.name.clone(),
6255 kind: unsafe { mem::transmute(symbol.kind) },
6256 path: symbol.path.to_string_lossy().to_string(),
6257 start: Some(proto::Point {
6258 row: symbol.range.start.row,
6259 column: symbol.range.start.column,
6260 }),
6261 end: Some(proto::Point {
6262 row: symbol.range.end.row,
6263 column: symbol.range.end.column,
6264 }),
6265 signature: symbol.signature.to_vec(),
6266 }
6267}
6268
6269fn relativize_path(base: &Path, path: &Path) -> PathBuf {
6270 let mut path_components = path.components();
6271 let mut base_components = base.components();
6272 let mut components: Vec<Component> = Vec::new();
6273 loop {
6274 match (path_components.next(), base_components.next()) {
6275 (None, None) => break,
6276 (Some(a), None) => {
6277 components.push(a);
6278 components.extend(path_components.by_ref());
6279 break;
6280 }
6281 (None, _) => components.push(Component::ParentDir),
6282 (Some(a), Some(b)) if components.is_empty() && a == b => (),
6283 (Some(a), Some(b)) if b == Component::CurDir => components.push(a),
6284 (Some(a), Some(_)) => {
6285 components.push(Component::ParentDir);
6286 for _ in base_components {
6287 components.push(Component::ParentDir);
6288 }
6289 components.push(a);
6290 components.extend(path_components.by_ref());
6291 break;
6292 }
6293 }
6294 }
6295 components.iter().map(|c| c.as_os_str()).collect()
6296}
6297
6298impl Item for Buffer {
6299 fn entry_id(&self, cx: &AppContext) -> Option<ProjectEntryId> {
6300 File::from_dyn(self.file()).and_then(|file| file.project_entry_id(cx))
6301 }
6302}