1use std::fmt::Write as _;
2use std::io::Write;
3use std::sync::Arc;
4
5use anyhow::{Context as _, Result};
6use assistant_settings::AssistantSettings;
7use assistant_tool::{ActionLog, Tool, ToolWorkingSet};
8use chrono::{DateTime, Utc};
9use collections::{BTreeMap, HashMap, HashSet};
10use fs::Fs;
11use futures::future::Shared;
12use futures::{FutureExt, StreamExt as _};
13use git;
14use gpui::{App, AppContext, Context, Entity, EventEmitter, SharedString, Task, WeakEntity};
15use language_model::{
16 LanguageModel, LanguageModelCompletionEvent, LanguageModelRegistry, LanguageModelRequest,
17 LanguageModelRequestMessage, LanguageModelRequestTool, LanguageModelToolResult,
18 LanguageModelToolUseId, MaxMonthlySpendReachedError, MessageContent, PaymentRequiredError,
19 Role, StopReason, TokenUsage,
20};
21use project::git_store::{GitStore, GitStoreCheckpoint};
22use project::{Project, Worktree};
23use prompt_store::{
24 AssistantSystemPromptContext, PromptBuilder, RulesFile, WorktreeInfoForSystemPrompt,
25};
26use serde::{Deserialize, Serialize};
27use settings::Settings;
28use util::{maybe, post_inc, ResultExt as _, TryFutureExt as _};
29use uuid::Uuid;
30
31use crate::context::{attach_context_to_message, ContextId, ContextSnapshot};
32use crate::thread_store::{
33 SerializedMessage, SerializedMessageSegment, SerializedThread, SerializedToolResult,
34 SerializedToolUse,
35};
36use crate::tool_use::{PendingToolUse, ToolUse, ToolUseState};
37
38#[derive(Debug, Clone, Copy)]
39pub enum RequestKind {
40 Chat,
41 /// Used when summarizing a thread.
42 Summarize,
43}
44
45#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Serialize, Deserialize)]
46pub struct ThreadId(Arc<str>);
47
48impl ThreadId {
49 pub fn new() -> Self {
50 Self(Uuid::new_v4().to_string().into())
51 }
52}
53
54impl std::fmt::Display for ThreadId {
55 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
56 write!(f, "{}", self.0)
57 }
58}
59
60#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Serialize, Deserialize)]
61pub struct MessageId(pub(crate) usize);
62
63impl MessageId {
64 fn post_inc(&mut self) -> Self {
65 Self(post_inc(&mut self.0))
66 }
67}
68
69/// A message in a [`Thread`].
70#[derive(Debug, Clone)]
71pub struct Message {
72 pub id: MessageId,
73 pub role: Role,
74 pub segments: Vec<MessageSegment>,
75}
76
77impl Message {
78 pub fn push_thinking(&mut self, text: &str) {
79 if let Some(MessageSegment::Thinking(segment)) = self.segments.last_mut() {
80 segment.push_str(text);
81 } else {
82 self.segments
83 .push(MessageSegment::Thinking(text.to_string()));
84 }
85 }
86
87 pub fn push_text(&mut self, text: &str) {
88 if let Some(MessageSegment::Text(segment)) = self.segments.last_mut() {
89 segment.push_str(text);
90 } else {
91 self.segments.push(MessageSegment::Text(text.to_string()));
92 }
93 }
94
95 pub fn to_string(&self) -> String {
96 let mut result = String::new();
97 for segment in &self.segments {
98 match segment {
99 MessageSegment::Text(text) => result.push_str(text),
100 MessageSegment::Thinking(text) => {
101 result.push_str("<think>");
102 result.push_str(text);
103 result.push_str("</think>");
104 }
105 }
106 }
107 result
108 }
109}
110
111#[derive(Debug, Clone)]
112pub enum MessageSegment {
113 Text(String),
114 Thinking(String),
115}
116
117#[derive(Debug, Clone, Serialize, Deserialize)]
118pub struct ProjectSnapshot {
119 pub worktree_snapshots: Vec<WorktreeSnapshot>,
120 pub unsaved_buffer_paths: Vec<String>,
121 pub timestamp: DateTime<Utc>,
122}
123
124#[derive(Debug, Clone, Serialize, Deserialize)]
125pub struct WorktreeSnapshot {
126 pub worktree_path: String,
127 pub git_state: Option<GitState>,
128}
129
130#[derive(Debug, Clone, Serialize, Deserialize)]
131pub struct GitState {
132 pub remote_url: Option<String>,
133 pub head_sha: Option<String>,
134 pub current_branch: Option<String>,
135 pub diff: Option<String>,
136}
137
138#[derive(Clone)]
139pub struct ThreadCheckpoint {
140 message_id: MessageId,
141 git_checkpoint: GitStoreCheckpoint,
142}
143
144#[derive(Copy, Clone, Debug)]
145pub enum ThreadFeedback {
146 Positive,
147 Negative,
148}
149
150pub enum LastRestoreCheckpoint {
151 Pending {
152 message_id: MessageId,
153 },
154 Error {
155 message_id: MessageId,
156 error: String,
157 },
158}
159
160impl LastRestoreCheckpoint {
161 pub fn message_id(&self) -> MessageId {
162 match self {
163 LastRestoreCheckpoint::Pending { message_id } => *message_id,
164 LastRestoreCheckpoint::Error { message_id, .. } => *message_id,
165 }
166 }
167}
168
169/// A thread of conversation with the LLM.
170pub struct Thread {
171 id: ThreadId,
172 updated_at: DateTime<Utc>,
173 summary: Option<SharedString>,
174 pending_summary: Task<Option<()>>,
175 messages: Vec<Message>,
176 next_message_id: MessageId,
177 context: BTreeMap<ContextId, ContextSnapshot>,
178 context_by_message: HashMap<MessageId, Vec<ContextId>>,
179 system_prompt_context: Option<AssistantSystemPromptContext>,
180 checkpoints_by_message: HashMap<MessageId, ThreadCheckpoint>,
181 completion_count: usize,
182 pending_completions: Vec<PendingCompletion>,
183 project: Entity<Project>,
184 prompt_builder: Arc<PromptBuilder>,
185 tools: Arc<ToolWorkingSet>,
186 tool_use: ToolUseState,
187 action_log: Entity<ActionLog>,
188 last_restore_checkpoint: Option<LastRestoreCheckpoint>,
189 pending_checkpoint: Option<ThreadCheckpoint>,
190 initial_project_snapshot: Shared<Task<Option<Arc<ProjectSnapshot>>>>,
191 cumulative_token_usage: TokenUsage,
192 feedback: Option<ThreadFeedback>,
193}
194
195impl Thread {
196 pub fn new(
197 project: Entity<Project>,
198 tools: Arc<ToolWorkingSet>,
199 prompt_builder: Arc<PromptBuilder>,
200 cx: &mut Context<Self>,
201 ) -> Self {
202 Self {
203 id: ThreadId::new(),
204 updated_at: Utc::now(),
205 summary: None,
206 pending_summary: Task::ready(None),
207 messages: Vec::new(),
208 next_message_id: MessageId(0),
209 context: BTreeMap::default(),
210 context_by_message: HashMap::default(),
211 system_prompt_context: None,
212 checkpoints_by_message: HashMap::default(),
213 completion_count: 0,
214 pending_completions: Vec::new(),
215 project: project.clone(),
216 prompt_builder,
217 tools: tools.clone(),
218 last_restore_checkpoint: None,
219 pending_checkpoint: None,
220 tool_use: ToolUseState::new(tools.clone()),
221 action_log: cx.new(|_| ActionLog::new()),
222 initial_project_snapshot: {
223 let project_snapshot = Self::project_snapshot(project, cx);
224 cx.foreground_executor()
225 .spawn(async move { Some(project_snapshot.await) })
226 .shared()
227 },
228 cumulative_token_usage: TokenUsage::default(),
229 feedback: None,
230 }
231 }
232
233 pub fn deserialize(
234 id: ThreadId,
235 serialized: SerializedThread,
236 project: Entity<Project>,
237 tools: Arc<ToolWorkingSet>,
238 prompt_builder: Arc<PromptBuilder>,
239 cx: &mut Context<Self>,
240 ) -> Self {
241 let next_message_id = MessageId(
242 serialized
243 .messages
244 .last()
245 .map(|message| message.id.0 + 1)
246 .unwrap_or(0),
247 );
248 let tool_use =
249 ToolUseState::from_serialized_messages(tools.clone(), &serialized.messages, |_| true);
250
251 Self {
252 id,
253 updated_at: serialized.updated_at,
254 summary: Some(serialized.summary),
255 pending_summary: Task::ready(None),
256 messages: serialized
257 .messages
258 .into_iter()
259 .map(|message| Message {
260 id: message.id,
261 role: message.role,
262 segments: message
263 .segments
264 .into_iter()
265 .map(|segment| match segment {
266 SerializedMessageSegment::Text { text } => MessageSegment::Text(text),
267 SerializedMessageSegment::Thinking { text } => {
268 MessageSegment::Thinking(text)
269 }
270 })
271 .collect(),
272 })
273 .collect(),
274 next_message_id,
275 context: BTreeMap::default(),
276 context_by_message: HashMap::default(),
277 system_prompt_context: None,
278 checkpoints_by_message: HashMap::default(),
279 completion_count: 0,
280 pending_completions: Vec::new(),
281 last_restore_checkpoint: None,
282 pending_checkpoint: None,
283 project,
284 prompt_builder,
285 tools,
286 tool_use,
287 action_log: cx.new(|_| ActionLog::new()),
288 initial_project_snapshot: Task::ready(serialized.initial_project_snapshot).shared(),
289 // TODO: persist token usage?
290 cumulative_token_usage: TokenUsage::default(),
291 feedback: None,
292 }
293 }
294
295 pub fn id(&self) -> &ThreadId {
296 &self.id
297 }
298
299 pub fn is_empty(&self) -> bool {
300 self.messages.is_empty()
301 }
302
303 pub fn updated_at(&self) -> DateTime<Utc> {
304 self.updated_at
305 }
306
307 pub fn touch_updated_at(&mut self) {
308 self.updated_at = Utc::now();
309 }
310
311 pub fn summary(&self) -> Option<SharedString> {
312 self.summary.clone()
313 }
314
315 pub fn summary_or_default(&self) -> SharedString {
316 const DEFAULT: SharedString = SharedString::new_static("New Thread");
317 self.summary.clone().unwrap_or(DEFAULT)
318 }
319
320 pub fn set_summary(&mut self, summary: impl Into<SharedString>, cx: &mut Context<Self>) {
321 self.summary = Some(summary.into());
322 cx.emit(ThreadEvent::SummaryChanged);
323 }
324
325 pub fn message(&self, id: MessageId) -> Option<&Message> {
326 self.messages.iter().find(|message| message.id == id)
327 }
328
329 pub fn messages(&self) -> impl Iterator<Item = &Message> {
330 self.messages.iter()
331 }
332
333 pub fn is_generating(&self) -> bool {
334 !self.pending_completions.is_empty() || !self.all_tools_finished()
335 }
336
337 pub fn tools(&self) -> &Arc<ToolWorkingSet> {
338 &self.tools
339 }
340
341 pub fn pending_tool(&self, id: &LanguageModelToolUseId) -> Option<&PendingToolUse> {
342 self.tool_use
343 .pending_tool_uses()
344 .into_iter()
345 .find(|tool_use| &tool_use.id == id)
346 }
347
348 pub fn tools_needing_confirmation(&self) -> impl Iterator<Item = &PendingToolUse> {
349 self.tool_use
350 .pending_tool_uses()
351 .into_iter()
352 .filter(|tool_use| tool_use.status.needs_confirmation())
353 }
354
355 pub fn has_pending_tool_uses(&self) -> bool {
356 !self.tool_use.pending_tool_uses().is_empty()
357 }
358
359 pub fn checkpoint_for_message(&self, id: MessageId) -> Option<ThreadCheckpoint> {
360 self.checkpoints_by_message.get(&id).cloned()
361 }
362
363 pub fn restore_checkpoint(
364 &mut self,
365 checkpoint: ThreadCheckpoint,
366 cx: &mut Context<Self>,
367 ) -> Task<Result<()>> {
368 self.last_restore_checkpoint = Some(LastRestoreCheckpoint::Pending {
369 message_id: checkpoint.message_id,
370 });
371 cx.emit(ThreadEvent::CheckpointChanged);
372 cx.notify();
373
374 let project = self.project.read(cx);
375 let restore = project
376 .git_store()
377 .read(cx)
378 .restore_checkpoint(checkpoint.git_checkpoint.clone(), cx);
379 cx.spawn(async move |this, cx| {
380 let result = restore.await;
381 this.update(cx, |this, cx| {
382 if let Err(err) = result.as_ref() {
383 this.last_restore_checkpoint = Some(LastRestoreCheckpoint::Error {
384 message_id: checkpoint.message_id,
385 error: err.to_string(),
386 });
387 } else {
388 this.truncate(checkpoint.message_id, cx);
389 this.last_restore_checkpoint = None;
390 }
391 this.pending_checkpoint = None;
392 cx.emit(ThreadEvent::CheckpointChanged);
393 cx.notify();
394 })?;
395 result
396 })
397 }
398
399 fn finalize_pending_checkpoint(&mut self, cx: &mut Context<Self>) {
400 let pending_checkpoint = if self.is_generating() {
401 return;
402 } else if let Some(checkpoint) = self.pending_checkpoint.take() {
403 checkpoint
404 } else {
405 return;
406 };
407
408 let git_store = self.project.read(cx).git_store().clone();
409 let final_checkpoint = git_store.read(cx).checkpoint(cx);
410 cx.spawn(async move |this, cx| match final_checkpoint.await {
411 Ok(final_checkpoint) => {
412 let equal = git_store
413 .read_with(cx, |store, cx| {
414 store.compare_checkpoints(
415 pending_checkpoint.git_checkpoint.clone(),
416 final_checkpoint.clone(),
417 cx,
418 )
419 })?
420 .await
421 .unwrap_or(false);
422
423 if equal {
424 git_store
425 .read_with(cx, |store, cx| {
426 store.delete_checkpoint(pending_checkpoint.git_checkpoint, cx)
427 })?
428 .detach();
429 } else {
430 this.update(cx, |this, cx| {
431 this.insert_checkpoint(pending_checkpoint, cx)
432 })?;
433 }
434
435 git_store
436 .read_with(cx, |store, cx| {
437 store.delete_checkpoint(final_checkpoint, cx)
438 })?
439 .detach();
440
441 Ok(())
442 }
443 Err(_) => this.update(cx, |this, cx| {
444 this.insert_checkpoint(pending_checkpoint, cx)
445 }),
446 })
447 .detach();
448 }
449
450 fn insert_checkpoint(&mut self, checkpoint: ThreadCheckpoint, cx: &mut Context<Self>) {
451 self.checkpoints_by_message
452 .insert(checkpoint.message_id, checkpoint);
453 cx.emit(ThreadEvent::CheckpointChanged);
454 cx.notify();
455 }
456
457 pub fn last_restore_checkpoint(&self) -> Option<&LastRestoreCheckpoint> {
458 self.last_restore_checkpoint.as_ref()
459 }
460
461 pub fn truncate(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
462 let Some(message_ix) = self
463 .messages
464 .iter()
465 .rposition(|message| message.id == message_id)
466 else {
467 return;
468 };
469 for deleted_message in self.messages.drain(message_ix..) {
470 self.context_by_message.remove(&deleted_message.id);
471 self.checkpoints_by_message.remove(&deleted_message.id);
472 }
473 cx.notify();
474 }
475
476 pub fn context_for_message(&self, id: MessageId) -> Option<Vec<ContextSnapshot>> {
477 let context = self.context_by_message.get(&id)?;
478 Some(
479 context
480 .into_iter()
481 .filter_map(|context_id| self.context.get(&context_id))
482 .cloned()
483 .collect::<Vec<_>>(),
484 )
485 }
486
487 /// Returns whether all of the tool uses have finished running.
488 pub fn all_tools_finished(&self) -> bool {
489 // If the only pending tool uses left are the ones with errors, then
490 // that means that we've finished running all of the pending tools.
491 self.tool_use
492 .pending_tool_uses()
493 .iter()
494 .all(|tool_use| tool_use.status.is_error())
495 }
496
497 pub fn tool_uses_for_message(&self, id: MessageId, cx: &App) -> Vec<ToolUse> {
498 self.tool_use.tool_uses_for_message(id, cx)
499 }
500
501 pub fn tool_results_for_message(&self, id: MessageId) -> Vec<&LanguageModelToolResult> {
502 self.tool_use.tool_results_for_message(id)
503 }
504
505 pub fn tool_result(&self, id: &LanguageModelToolUseId) -> Option<&LanguageModelToolResult> {
506 self.tool_use.tool_result(id)
507 }
508
509 pub fn message_has_tool_results(&self, message_id: MessageId) -> bool {
510 self.tool_use.message_has_tool_results(message_id)
511 }
512
513 pub fn insert_user_message(
514 &mut self,
515 text: impl Into<String>,
516 context: Vec<ContextSnapshot>,
517 git_checkpoint: Option<GitStoreCheckpoint>,
518 cx: &mut Context<Self>,
519 ) -> MessageId {
520 let message_id =
521 self.insert_message(Role::User, vec![MessageSegment::Text(text.into())], cx);
522 let context_ids = context.iter().map(|context| context.id).collect::<Vec<_>>();
523 self.context
524 .extend(context.into_iter().map(|context| (context.id, context)));
525 self.context_by_message.insert(message_id, context_ids);
526 if let Some(git_checkpoint) = git_checkpoint {
527 self.pending_checkpoint = Some(ThreadCheckpoint {
528 message_id,
529 git_checkpoint,
530 });
531 }
532 message_id
533 }
534
535 pub fn insert_message(
536 &mut self,
537 role: Role,
538 segments: Vec<MessageSegment>,
539 cx: &mut Context<Self>,
540 ) -> MessageId {
541 let id = self.next_message_id.post_inc();
542 self.messages.push(Message { id, role, segments });
543 self.touch_updated_at();
544 cx.emit(ThreadEvent::MessageAdded(id));
545 id
546 }
547
548 pub fn edit_message(
549 &mut self,
550 id: MessageId,
551 new_role: Role,
552 new_segments: Vec<MessageSegment>,
553 cx: &mut Context<Self>,
554 ) -> bool {
555 let Some(message) = self.messages.iter_mut().find(|message| message.id == id) else {
556 return false;
557 };
558 message.role = new_role;
559 message.segments = new_segments;
560 self.touch_updated_at();
561 cx.emit(ThreadEvent::MessageEdited(id));
562 true
563 }
564
565 pub fn delete_message(&mut self, id: MessageId, cx: &mut Context<Self>) -> bool {
566 let Some(index) = self.messages.iter().position(|message| message.id == id) else {
567 return false;
568 };
569 self.messages.remove(index);
570 self.context_by_message.remove(&id);
571 self.touch_updated_at();
572 cx.emit(ThreadEvent::MessageDeleted(id));
573 true
574 }
575
576 /// Returns the representation of this [`Thread`] in a textual form.
577 ///
578 /// This is the representation we use when attaching a thread as context to another thread.
579 pub fn text(&self) -> String {
580 let mut text = String::new();
581
582 for message in &self.messages {
583 text.push_str(match message.role {
584 language_model::Role::User => "User:",
585 language_model::Role::Assistant => "Assistant:",
586 language_model::Role::System => "System:",
587 });
588 text.push('\n');
589
590 for segment in &message.segments {
591 match segment {
592 MessageSegment::Text(content) => text.push_str(content),
593 MessageSegment::Thinking(content) => {
594 text.push_str(&format!("<think>{}</think>", content))
595 }
596 }
597 }
598 text.push('\n');
599 }
600
601 text
602 }
603
604 /// Serializes this thread into a format for storage or telemetry.
605 pub fn serialize(&self, cx: &mut Context<Self>) -> Task<Result<SerializedThread>> {
606 let initial_project_snapshot = self.initial_project_snapshot.clone();
607 cx.spawn(async move |this, cx| {
608 let initial_project_snapshot = initial_project_snapshot.await;
609 this.read_with(cx, |this, cx| SerializedThread {
610 version: SerializedThread::VERSION.to_string(),
611 summary: this.summary_or_default(),
612 updated_at: this.updated_at(),
613 messages: this
614 .messages()
615 .map(|message| SerializedMessage {
616 id: message.id,
617 role: message.role,
618 segments: message
619 .segments
620 .iter()
621 .map(|segment| match segment {
622 MessageSegment::Text(text) => {
623 SerializedMessageSegment::Text { text: text.clone() }
624 }
625 MessageSegment::Thinking(text) => {
626 SerializedMessageSegment::Thinking { text: text.clone() }
627 }
628 })
629 .collect(),
630 tool_uses: this
631 .tool_uses_for_message(message.id, cx)
632 .into_iter()
633 .map(|tool_use| SerializedToolUse {
634 id: tool_use.id,
635 name: tool_use.name,
636 input: tool_use.input,
637 })
638 .collect(),
639 tool_results: this
640 .tool_results_for_message(message.id)
641 .into_iter()
642 .map(|tool_result| SerializedToolResult {
643 tool_use_id: tool_result.tool_use_id.clone(),
644 is_error: tool_result.is_error,
645 content: tool_result.content.clone(),
646 })
647 .collect(),
648 })
649 .collect(),
650 initial_project_snapshot,
651 })
652 })
653 }
654
655 pub fn set_system_prompt_context(&mut self, context: AssistantSystemPromptContext) {
656 self.system_prompt_context = Some(context);
657 }
658
659 pub fn system_prompt_context(&self) -> &Option<AssistantSystemPromptContext> {
660 &self.system_prompt_context
661 }
662
663 pub fn load_system_prompt_context(
664 &self,
665 cx: &App,
666 ) -> Task<(AssistantSystemPromptContext, Option<ThreadError>)> {
667 let project = self.project.read(cx);
668 let tasks = project
669 .visible_worktrees(cx)
670 .map(|worktree| {
671 Self::load_worktree_info_for_system_prompt(
672 project.fs().clone(),
673 worktree.read(cx),
674 cx,
675 )
676 })
677 .collect::<Vec<_>>();
678
679 cx.spawn(async |_cx| {
680 let results = futures::future::join_all(tasks).await;
681 let mut first_err = None;
682 let worktrees = results
683 .into_iter()
684 .map(|(worktree, err)| {
685 if first_err.is_none() && err.is_some() {
686 first_err = err;
687 }
688 worktree
689 })
690 .collect::<Vec<_>>();
691 (AssistantSystemPromptContext::new(worktrees), first_err)
692 })
693 }
694
695 fn load_worktree_info_for_system_prompt(
696 fs: Arc<dyn Fs>,
697 worktree: &Worktree,
698 cx: &App,
699 ) -> Task<(WorktreeInfoForSystemPrompt, Option<ThreadError>)> {
700 let root_name = worktree.root_name().into();
701 let abs_path = worktree.abs_path();
702
703 // Note that Cline supports `.clinerules` being a directory, but that is not currently
704 // supported. This doesn't seem to occur often in GitHub repositories.
705 const RULES_FILE_NAMES: [&'static str; 6] = [
706 ".rules",
707 ".cursorrules",
708 ".windsurfrules",
709 ".clinerules",
710 ".github/copilot-instructions.md",
711 "CLAUDE.md",
712 ];
713 let selected_rules_file = RULES_FILE_NAMES
714 .into_iter()
715 .filter_map(|name| {
716 worktree
717 .entry_for_path(name)
718 .filter(|entry| entry.is_file())
719 .map(|entry| (entry.path.clone(), worktree.absolutize(&entry.path)))
720 })
721 .next();
722
723 if let Some((rel_rules_path, abs_rules_path)) = selected_rules_file {
724 cx.spawn(async move |_| {
725 let rules_file_result = maybe!(async move {
726 let abs_rules_path = abs_rules_path?;
727 let text = fs.load(&abs_rules_path).await.with_context(|| {
728 format!("Failed to load assistant rules file {:?}", abs_rules_path)
729 })?;
730 anyhow::Ok(RulesFile {
731 rel_path: rel_rules_path,
732 abs_path: abs_rules_path.into(),
733 text: text.trim().to_string(),
734 })
735 })
736 .await;
737 let (rules_file, rules_file_error) = match rules_file_result {
738 Ok(rules_file) => (Some(rules_file), None),
739 Err(err) => (
740 None,
741 Some(ThreadError::Message {
742 header: "Error loading rules file".into(),
743 message: format!("{err}").into(),
744 }),
745 ),
746 };
747 let worktree_info = WorktreeInfoForSystemPrompt {
748 root_name,
749 abs_path,
750 rules_file,
751 };
752 (worktree_info, rules_file_error)
753 })
754 } else {
755 Task::ready((
756 WorktreeInfoForSystemPrompt {
757 root_name,
758 abs_path,
759 rules_file: None,
760 },
761 None,
762 ))
763 }
764 }
765
766 pub fn send_to_model(
767 &mut self,
768 model: Arc<dyn LanguageModel>,
769 request_kind: RequestKind,
770 cx: &mut Context<Self>,
771 ) {
772 let mut request = self.to_completion_request(request_kind, cx);
773 request.tools = {
774 let mut tools = Vec::new();
775 tools.extend(self.tools().enabled_tools(cx).into_iter().map(|tool| {
776 LanguageModelRequestTool {
777 name: tool.name(),
778 description: tool.description(),
779 input_schema: tool.input_schema(),
780 }
781 }));
782
783 tools
784 };
785
786 self.stream_completion(request, model, cx);
787 }
788
789 pub fn to_completion_request(
790 &self,
791 request_kind: RequestKind,
792 cx: &App,
793 ) -> LanguageModelRequest {
794 let mut request = LanguageModelRequest {
795 messages: vec![],
796 tools: Vec::new(),
797 stop: Vec::new(),
798 temperature: None,
799 };
800
801 if let Some(system_prompt_context) = self.system_prompt_context.as_ref() {
802 if let Some(system_prompt) = self
803 .prompt_builder
804 .generate_assistant_system_prompt(system_prompt_context)
805 .context("failed to generate assistant system prompt")
806 .log_err()
807 {
808 request.messages.push(LanguageModelRequestMessage {
809 role: Role::System,
810 content: vec![MessageContent::Text(system_prompt)],
811 cache: true,
812 });
813 }
814 } else {
815 log::error!("system_prompt_context not set.")
816 }
817
818 let mut referenced_context_ids = HashSet::default();
819
820 for message in &self.messages {
821 if let Some(context_ids) = self.context_by_message.get(&message.id) {
822 referenced_context_ids.extend(context_ids);
823 }
824
825 let mut request_message = LanguageModelRequestMessage {
826 role: message.role,
827 content: Vec::new(),
828 cache: false,
829 };
830
831 match request_kind {
832 RequestKind::Chat => {
833 self.tool_use
834 .attach_tool_results(message.id, &mut request_message);
835 }
836 RequestKind::Summarize => {
837 // We don't care about tool use during summarization.
838 }
839 }
840
841 if !message.segments.is_empty() {
842 request_message
843 .content
844 .push(MessageContent::Text(message.to_string()));
845 }
846
847 match request_kind {
848 RequestKind::Chat => {
849 self.tool_use
850 .attach_tool_uses(message.id, &mut request_message);
851 }
852 RequestKind::Summarize => {
853 // We don't care about tool use during summarization.
854 }
855 };
856
857 request.messages.push(request_message);
858 }
859
860 if !referenced_context_ids.is_empty() {
861 let mut context_message = LanguageModelRequestMessage {
862 role: Role::User,
863 content: Vec::new(),
864 cache: false,
865 };
866
867 let referenced_context = referenced_context_ids
868 .into_iter()
869 .filter_map(|context_id| self.context.get(context_id))
870 .cloned();
871 attach_context_to_message(&mut context_message, referenced_context);
872
873 request.messages.push(context_message);
874 }
875
876 self.attached_tracked_files_state(&mut request.messages, cx);
877
878 request
879 }
880
881 fn attached_tracked_files_state(
882 &self,
883 messages: &mut Vec<LanguageModelRequestMessage>,
884 cx: &App,
885 ) {
886 const STALE_FILES_HEADER: &str = "These files changed since last read:";
887
888 let mut stale_message = String::new();
889
890 let action_log = self.action_log.read(cx);
891
892 for stale_file in action_log.stale_buffers(cx) {
893 let Some(file) = stale_file.read(cx).file() else {
894 continue;
895 };
896
897 if stale_message.is_empty() {
898 write!(&mut stale_message, "{}", STALE_FILES_HEADER).ok();
899 }
900
901 writeln!(&mut stale_message, "- {}", file.path().display()).ok();
902 }
903
904 let mut content = Vec::with_capacity(2);
905
906 if !stale_message.is_empty() {
907 content.push(stale_message.into());
908 }
909
910 if action_log.has_edited_files_since_project_diagnostics_check() {
911 content.push(
912 "When you're done making changes, make sure to check project diagnostics and fix all errors AND warnings you introduced!".into(),
913 );
914 }
915
916 if !content.is_empty() {
917 let context_message = LanguageModelRequestMessage {
918 role: Role::User,
919 content,
920 cache: false,
921 };
922
923 messages.push(context_message);
924 }
925 }
926
927 pub fn stream_completion(
928 &mut self,
929 request: LanguageModelRequest,
930 model: Arc<dyn LanguageModel>,
931 cx: &mut Context<Self>,
932 ) {
933 let pending_completion_id = post_inc(&mut self.completion_count);
934
935 let task = cx.spawn(async move |thread, cx| {
936 let stream = model.stream_completion(request, &cx);
937 let initial_token_usage =
938 thread.read_with(cx, |thread, _cx| thread.cumulative_token_usage.clone());
939 let stream_completion = async {
940 let mut events = stream.await?;
941 let mut stop_reason = StopReason::EndTurn;
942 let mut current_token_usage = TokenUsage::default();
943
944 while let Some(event) = events.next().await {
945 let event = event?;
946
947 thread.update(cx, |thread, cx| {
948 match event {
949 LanguageModelCompletionEvent::StartMessage { .. } => {
950 thread.insert_message(
951 Role::Assistant,
952 vec![MessageSegment::Text(String::new())],
953 cx,
954 );
955 }
956 LanguageModelCompletionEvent::Stop(reason) => {
957 stop_reason = reason;
958 }
959 LanguageModelCompletionEvent::UsageUpdate(token_usage) => {
960 thread.cumulative_token_usage =
961 thread.cumulative_token_usage.clone() + token_usage.clone()
962 - current_token_usage.clone();
963 current_token_usage = token_usage;
964 }
965 LanguageModelCompletionEvent::Text(chunk) => {
966 if let Some(last_message) = thread.messages.last_mut() {
967 if last_message.role == Role::Assistant {
968 last_message.push_text(&chunk);
969 cx.emit(ThreadEvent::StreamedAssistantText(
970 last_message.id,
971 chunk,
972 ));
973 } else {
974 // If we won't have an Assistant message yet, assume this chunk marks the beginning
975 // of a new Assistant response.
976 //
977 // Importantly: We do *not* want to emit a `StreamedAssistantText` event here, as it
978 // will result in duplicating the text of the chunk in the rendered Markdown.
979 thread.insert_message(
980 Role::Assistant,
981 vec![MessageSegment::Text(chunk.to_string())],
982 cx,
983 );
984 };
985 }
986 }
987 LanguageModelCompletionEvent::Thinking(chunk) => {
988 if let Some(last_message) = thread.messages.last_mut() {
989 if last_message.role == Role::Assistant {
990 last_message.push_thinking(&chunk);
991 cx.emit(ThreadEvent::StreamedAssistantThinking(
992 last_message.id,
993 chunk,
994 ));
995 } else {
996 // If we won't have an Assistant message yet, assume this chunk marks the beginning
997 // of a new Assistant response.
998 //
999 // Importantly: We do *not* want to emit a `StreamedAssistantText` event here, as it
1000 // will result in duplicating the text of the chunk in the rendered Markdown.
1001 thread.insert_message(
1002 Role::Assistant,
1003 vec![MessageSegment::Thinking(chunk.to_string())],
1004 cx,
1005 );
1006 };
1007 }
1008 }
1009 LanguageModelCompletionEvent::ToolUse(tool_use) => {
1010 if let Some(last_assistant_message) = thread
1011 .messages
1012 .iter()
1013 .rfind(|message| message.role == Role::Assistant)
1014 {
1015 thread.tool_use.request_tool_use(
1016 last_assistant_message.id,
1017 tool_use,
1018 cx,
1019 );
1020 }
1021 }
1022 }
1023
1024 thread.touch_updated_at();
1025 cx.emit(ThreadEvent::StreamedCompletion);
1026 cx.notify();
1027 })?;
1028
1029 smol::future::yield_now().await;
1030 }
1031
1032 thread.update(cx, |thread, cx| {
1033 thread
1034 .pending_completions
1035 .retain(|completion| completion.id != pending_completion_id);
1036
1037 if thread.summary.is_none() && thread.messages.len() >= 2 {
1038 thread.summarize(cx);
1039 }
1040 })?;
1041
1042 anyhow::Ok(stop_reason)
1043 };
1044
1045 let result = stream_completion.await;
1046
1047 thread
1048 .update(cx, |thread, cx| {
1049 thread.finalize_pending_checkpoint(cx);
1050 match result.as_ref() {
1051 Ok(stop_reason) => match stop_reason {
1052 StopReason::ToolUse => {
1053 cx.emit(ThreadEvent::UsePendingTools);
1054 }
1055 StopReason::EndTurn => {}
1056 StopReason::MaxTokens => {}
1057 },
1058 Err(error) => {
1059 if error.is::<PaymentRequiredError>() {
1060 cx.emit(ThreadEvent::ShowError(ThreadError::PaymentRequired));
1061 } else if error.is::<MaxMonthlySpendReachedError>() {
1062 cx.emit(ThreadEvent::ShowError(
1063 ThreadError::MaxMonthlySpendReached,
1064 ));
1065 } else {
1066 let error_message = error
1067 .chain()
1068 .map(|err| err.to_string())
1069 .collect::<Vec<_>>()
1070 .join("\n");
1071 cx.emit(ThreadEvent::ShowError(ThreadError::Message {
1072 header: "Error interacting with language model".into(),
1073 message: SharedString::from(error_message.clone()),
1074 }));
1075 }
1076
1077 thread.cancel_last_completion(cx);
1078 }
1079 }
1080 cx.emit(ThreadEvent::DoneStreaming);
1081
1082 if let Ok(initial_usage) = initial_token_usage {
1083 let usage = thread.cumulative_token_usage.clone() - initial_usage;
1084
1085 telemetry::event!(
1086 "Assistant Thread Completion",
1087 thread_id = thread.id().to_string(),
1088 model = model.telemetry_id(),
1089 model_provider = model.provider_id().to_string(),
1090 input_tokens = usage.input_tokens,
1091 output_tokens = usage.output_tokens,
1092 cache_creation_input_tokens = usage.cache_creation_input_tokens,
1093 cache_read_input_tokens = usage.cache_read_input_tokens,
1094 );
1095 }
1096 })
1097 .ok();
1098 });
1099
1100 self.pending_completions.push(PendingCompletion {
1101 id: pending_completion_id,
1102 _task: task,
1103 });
1104 }
1105
1106 pub fn summarize(&mut self, cx: &mut Context<Self>) {
1107 let Some(provider) = LanguageModelRegistry::read_global(cx).active_provider() else {
1108 return;
1109 };
1110 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
1111 return;
1112 };
1113
1114 if !provider.is_authenticated(cx) {
1115 return;
1116 }
1117
1118 let mut request = self.to_completion_request(RequestKind::Summarize, cx);
1119 request.messages.push(LanguageModelRequestMessage {
1120 role: Role::User,
1121 content: vec![
1122 "Generate a concise 3-7 word title for this conversation, omitting punctuation. Go straight to the title, without any preamble and prefix like `Here's a concise suggestion:...` or `Title:`"
1123 .into(),
1124 ],
1125 cache: false,
1126 });
1127
1128 self.pending_summary = cx.spawn(async move |this, cx| {
1129 async move {
1130 let stream = model.stream_completion_text(request, &cx);
1131 let mut messages = stream.await?;
1132
1133 let mut new_summary = String::new();
1134 while let Some(message) = messages.stream.next().await {
1135 let text = message?;
1136 let mut lines = text.lines();
1137 new_summary.extend(lines.next());
1138
1139 // Stop if the LLM generated multiple lines.
1140 if lines.next().is_some() {
1141 break;
1142 }
1143 }
1144
1145 this.update(cx, |this, cx| {
1146 if !new_summary.is_empty() {
1147 this.summary = Some(new_summary.into());
1148 }
1149
1150 cx.emit(ThreadEvent::SummaryChanged);
1151 })?;
1152
1153 anyhow::Ok(())
1154 }
1155 .log_err()
1156 .await
1157 });
1158 }
1159
1160 pub fn use_pending_tools(
1161 &mut self,
1162 cx: &mut Context<Self>,
1163 ) -> impl IntoIterator<Item = PendingToolUse> {
1164 let request = self.to_completion_request(RequestKind::Chat, cx);
1165 let messages = Arc::new(request.messages);
1166 let pending_tool_uses = self
1167 .tool_use
1168 .pending_tool_uses()
1169 .into_iter()
1170 .filter(|tool_use| tool_use.status.is_idle())
1171 .cloned()
1172 .collect::<Vec<_>>();
1173
1174 for tool_use in pending_tool_uses.iter() {
1175 if let Some(tool) = self.tools.tool(&tool_use.name, cx) {
1176 if tool.needs_confirmation()
1177 && !AssistantSettings::get_global(cx).always_allow_tool_actions
1178 {
1179 self.tool_use.confirm_tool_use(
1180 tool_use.id.clone(),
1181 tool_use.ui_text.clone(),
1182 tool_use.input.clone(),
1183 messages.clone(),
1184 tool,
1185 );
1186 cx.emit(ThreadEvent::ToolConfirmationNeeded);
1187 } else {
1188 self.run_tool(
1189 tool_use.id.clone(),
1190 tool_use.ui_text.clone(),
1191 tool_use.input.clone(),
1192 &messages,
1193 tool,
1194 cx,
1195 );
1196 }
1197 } else if let Some(tool) = self.tools.tool(&tool_use.name, cx) {
1198 self.run_tool(
1199 tool_use.id.clone(),
1200 tool_use.ui_text.clone(),
1201 tool_use.input.clone(),
1202 &messages,
1203 tool,
1204 cx,
1205 );
1206 }
1207 }
1208
1209 pending_tool_uses
1210 }
1211
1212 pub fn run_tool(
1213 &mut self,
1214 tool_use_id: LanguageModelToolUseId,
1215 ui_text: impl Into<SharedString>,
1216 input: serde_json::Value,
1217 messages: &[LanguageModelRequestMessage],
1218 tool: Arc<dyn Tool>,
1219 cx: &mut Context<'_, Thread>,
1220 ) {
1221 let task = self.spawn_tool_use(tool_use_id.clone(), messages, input, tool, cx);
1222 self.tool_use
1223 .run_pending_tool(tool_use_id, ui_text.into(), task);
1224 }
1225
1226 fn spawn_tool_use(
1227 &mut self,
1228 tool_use_id: LanguageModelToolUseId,
1229 messages: &[LanguageModelRequestMessage],
1230 input: serde_json::Value,
1231 tool: Arc<dyn Tool>,
1232 cx: &mut Context<Thread>,
1233 ) -> Task<()> {
1234 let run_tool = tool.run(
1235 input,
1236 messages,
1237 self.project.clone(),
1238 self.action_log.clone(),
1239 cx,
1240 );
1241
1242 cx.spawn({
1243 async move |thread: WeakEntity<Thread>, cx| {
1244 let output = run_tool.await;
1245
1246 thread
1247 .update(cx, |thread, cx| {
1248 let pending_tool_use = thread
1249 .tool_use
1250 .insert_tool_output(tool_use_id.clone(), output);
1251
1252 cx.emit(ThreadEvent::ToolFinished {
1253 tool_use_id,
1254 pending_tool_use,
1255 canceled: false,
1256 });
1257 })
1258 .ok();
1259 }
1260 })
1261 }
1262
1263 pub fn attach_tool_results(
1264 &mut self,
1265 updated_context: Vec<ContextSnapshot>,
1266 cx: &mut Context<Self>,
1267 ) {
1268 self.context.extend(
1269 updated_context
1270 .into_iter()
1271 .map(|context| (context.id, context)),
1272 );
1273
1274 // Insert a user message to contain the tool results.
1275 self.insert_user_message(
1276 // TODO: Sending up a user message without any content results in the model sending back
1277 // responses that also don't have any content. We currently don't handle this case well,
1278 // so for now we provide some text to keep the model on track.
1279 "Here are the tool results.",
1280 Vec::new(),
1281 None,
1282 cx,
1283 );
1284 }
1285
1286 /// Cancels the last pending completion, if there are any pending.
1287 ///
1288 /// Returns whether a completion was canceled.
1289 pub fn cancel_last_completion(&mut self, cx: &mut Context<Self>) -> bool {
1290 let canceled = if self.pending_completions.pop().is_some() {
1291 true
1292 } else {
1293 let mut canceled = false;
1294 for pending_tool_use in self.tool_use.cancel_pending() {
1295 canceled = true;
1296 cx.emit(ThreadEvent::ToolFinished {
1297 tool_use_id: pending_tool_use.id.clone(),
1298 pending_tool_use: Some(pending_tool_use),
1299 canceled: true,
1300 });
1301 }
1302 canceled
1303 };
1304 self.finalize_pending_checkpoint(cx);
1305 canceled
1306 }
1307
1308 /// Returns the feedback given to the thread, if any.
1309 pub fn feedback(&self) -> Option<ThreadFeedback> {
1310 self.feedback
1311 }
1312
1313 /// Reports feedback about the thread and stores it in our telemetry backend.
1314 pub fn report_feedback(
1315 &mut self,
1316 feedback: ThreadFeedback,
1317 cx: &mut Context<Self>,
1318 ) -> Task<Result<()>> {
1319 let final_project_snapshot = Self::project_snapshot(self.project.clone(), cx);
1320 let serialized_thread = self.serialize(cx);
1321 let thread_id = self.id().clone();
1322 let client = self.project.read(cx).client();
1323 self.feedback = Some(feedback);
1324 cx.notify();
1325
1326 cx.background_spawn(async move {
1327 let final_project_snapshot = final_project_snapshot.await;
1328 let serialized_thread = serialized_thread.await?;
1329 let thread_data =
1330 serde_json::to_value(serialized_thread).unwrap_or_else(|_| serde_json::Value::Null);
1331
1332 let rating = match feedback {
1333 ThreadFeedback::Positive => "positive",
1334 ThreadFeedback::Negative => "negative",
1335 };
1336 telemetry::event!(
1337 "Assistant Thread Rated",
1338 rating,
1339 thread_id,
1340 thread_data,
1341 final_project_snapshot
1342 );
1343 client.telemetry().flush_events();
1344
1345 Ok(())
1346 })
1347 }
1348
1349 /// Create a snapshot of the current project state including git information and unsaved buffers.
1350 fn project_snapshot(
1351 project: Entity<Project>,
1352 cx: &mut Context<Self>,
1353 ) -> Task<Arc<ProjectSnapshot>> {
1354 let git_store = project.read(cx).git_store().clone();
1355 let worktree_snapshots: Vec<_> = project
1356 .read(cx)
1357 .visible_worktrees(cx)
1358 .map(|worktree| Self::worktree_snapshot(worktree, git_store.clone(), cx))
1359 .collect();
1360
1361 cx.spawn(async move |_, cx| {
1362 let worktree_snapshots = futures::future::join_all(worktree_snapshots).await;
1363
1364 let mut unsaved_buffers = Vec::new();
1365 cx.update(|app_cx| {
1366 let buffer_store = project.read(app_cx).buffer_store();
1367 for buffer_handle in buffer_store.read(app_cx).buffers() {
1368 let buffer = buffer_handle.read(app_cx);
1369 if buffer.is_dirty() {
1370 if let Some(file) = buffer.file() {
1371 let path = file.path().to_string_lossy().to_string();
1372 unsaved_buffers.push(path);
1373 }
1374 }
1375 }
1376 })
1377 .ok();
1378
1379 Arc::new(ProjectSnapshot {
1380 worktree_snapshots,
1381 unsaved_buffer_paths: unsaved_buffers,
1382 timestamp: Utc::now(),
1383 })
1384 })
1385 }
1386
1387 fn worktree_snapshot(
1388 worktree: Entity<project::Worktree>,
1389 git_store: Entity<GitStore>,
1390 cx: &App,
1391 ) -> Task<WorktreeSnapshot> {
1392 cx.spawn(async move |cx| {
1393 // Get worktree path and snapshot
1394 let worktree_info = cx.update(|app_cx| {
1395 let worktree = worktree.read(app_cx);
1396 let path = worktree.abs_path().to_string_lossy().to_string();
1397 let snapshot = worktree.snapshot();
1398 (path, snapshot)
1399 });
1400
1401 let Ok((worktree_path, snapshot)) = worktree_info else {
1402 return WorktreeSnapshot {
1403 worktree_path: String::new(),
1404 git_state: None,
1405 };
1406 };
1407
1408 let repo_info = git_store
1409 .update(cx, |git_store, cx| {
1410 git_store
1411 .repositories()
1412 .values()
1413 .find(|repo| repo.read(cx).worktree_id == snapshot.id())
1414 .and_then(|repo| {
1415 let repo = repo.read(cx);
1416 Some((repo.branch().cloned(), repo.local_repository()?))
1417 })
1418 })
1419 .ok()
1420 .flatten();
1421
1422 // Extract git information
1423 let git_state = match repo_info {
1424 None => None,
1425 Some((branch, repo)) => {
1426 let current_branch = branch.map(|branch| branch.name.to_string());
1427 let remote_url = repo.remote_url("origin");
1428 let head_sha = repo.head_sha();
1429
1430 // Get diff asynchronously
1431 let diff = repo
1432 .diff(git::repository::DiffType::HeadToWorktree, cx.clone())
1433 .await
1434 .ok();
1435
1436 Some(GitState {
1437 remote_url,
1438 head_sha,
1439 current_branch,
1440 diff,
1441 })
1442 }
1443 };
1444
1445 WorktreeSnapshot {
1446 worktree_path,
1447 git_state,
1448 }
1449 })
1450 }
1451
1452 pub fn to_markdown(&self, cx: &App) -> Result<String> {
1453 let mut markdown = Vec::new();
1454
1455 if let Some(summary) = self.summary() {
1456 writeln!(markdown, "# {summary}\n")?;
1457 };
1458
1459 for message in self.messages() {
1460 writeln!(
1461 markdown,
1462 "## {role}\n",
1463 role = match message.role {
1464 Role::User => "User",
1465 Role::Assistant => "Assistant",
1466 Role::System => "System",
1467 }
1468 )?;
1469 for segment in &message.segments {
1470 match segment {
1471 MessageSegment::Text(text) => writeln!(markdown, "{}\n", text)?,
1472 MessageSegment::Thinking(text) => {
1473 writeln!(markdown, "<think>{}</think>\n", text)?
1474 }
1475 }
1476 }
1477
1478 for tool_use in self.tool_uses_for_message(message.id, cx) {
1479 writeln!(
1480 markdown,
1481 "**Use Tool: {} ({})**",
1482 tool_use.name, tool_use.id
1483 )?;
1484 writeln!(markdown, "```json")?;
1485 writeln!(
1486 markdown,
1487 "{}",
1488 serde_json::to_string_pretty(&tool_use.input)?
1489 )?;
1490 writeln!(markdown, "```")?;
1491 }
1492
1493 for tool_result in self.tool_results_for_message(message.id) {
1494 write!(markdown, "**Tool Results: {}", tool_result.tool_use_id)?;
1495 if tool_result.is_error {
1496 write!(markdown, " (Error)")?;
1497 }
1498
1499 writeln!(markdown, "**\n")?;
1500 writeln!(markdown, "{}", tool_result.content)?;
1501 }
1502 }
1503
1504 Ok(String::from_utf8_lossy(&markdown).to_string())
1505 }
1506
1507 pub fn action_log(&self) -> &Entity<ActionLog> {
1508 &self.action_log
1509 }
1510
1511 pub fn project(&self) -> &Entity<Project> {
1512 &self.project
1513 }
1514
1515 pub fn cumulative_token_usage(&self) -> TokenUsage {
1516 self.cumulative_token_usage.clone()
1517 }
1518
1519 pub fn deny_tool_use(&mut self, tool_use_id: LanguageModelToolUseId, cx: &mut Context<Self>) {
1520 let err = Err(anyhow::anyhow!(
1521 "Permission to run tool action denied by user"
1522 ));
1523
1524 self.tool_use.insert_tool_output(tool_use_id.clone(), err);
1525
1526 cx.emit(ThreadEvent::ToolFinished {
1527 tool_use_id,
1528 pending_tool_use: None,
1529 canceled: true,
1530 });
1531 }
1532}
1533
1534#[derive(Debug, Clone)]
1535pub enum ThreadError {
1536 PaymentRequired,
1537 MaxMonthlySpendReached,
1538 Message {
1539 header: SharedString,
1540 message: SharedString,
1541 },
1542}
1543
1544#[derive(Debug, Clone)]
1545pub enum ThreadEvent {
1546 ShowError(ThreadError),
1547 StreamedCompletion,
1548 StreamedAssistantText(MessageId, String),
1549 StreamedAssistantThinking(MessageId, String),
1550 DoneStreaming,
1551 MessageAdded(MessageId),
1552 MessageEdited(MessageId),
1553 MessageDeleted(MessageId),
1554 SummaryChanged,
1555 UsePendingTools,
1556 ToolFinished {
1557 #[allow(unused)]
1558 tool_use_id: LanguageModelToolUseId,
1559 /// The pending tool use that corresponds to this tool.
1560 pending_tool_use: Option<PendingToolUse>,
1561 /// Whether the tool was canceled by the user.
1562 canceled: bool,
1563 },
1564 CheckpointChanged,
1565 ToolConfirmationNeeded,
1566}
1567
1568impl EventEmitter<ThreadEvent> for Thread {}
1569
1570struct PendingCompletion {
1571 id: usize,
1572 _task: Task<()>,
1573}