1use crate::{
2 humanize_token_count, prompts::PromptBuilder, AssistantPanel, AssistantPanelEvent,
3 ModelSelector, DEFAULT_CONTEXT_LINES,
4};
5use anyhow::{Context as _, Result};
6use client::telemetry::Telemetry;
7use collections::{HashMap, VecDeque};
8use editor::{
9 actions::{MoveDown, MoveUp, SelectAll},
10 Editor, EditorElement, EditorEvent, EditorMode, EditorStyle, MultiBuffer,
11};
12use fs::Fs;
13use futures::{channel::mpsc, SinkExt, StreamExt};
14use gpui::{
15 AppContext, Context, EventEmitter, FocusHandle, FocusableView, Global, Model, ModelContext,
16 Subscription, Task, TextStyle, UpdateGlobal, View, WeakView,
17};
18use language::Buffer;
19use language_model::{
20 LanguageModelRegistry, LanguageModelRequest, LanguageModelRequestMessage, Role,
21};
22use settings::Settings;
23use std::{
24 cmp,
25 sync::Arc,
26 time::{Duration, Instant},
27};
28use terminal::Terminal;
29use terminal_view::TerminalView;
30use theme::ThemeSettings;
31use ui::{prelude::*, IconButtonShape, Tooltip};
32use util::ResultExt;
33use workspace::{notifications::NotificationId, Toast, Workspace};
34
35pub fn init(
36 fs: Arc<dyn Fs>,
37 prompt_builder: Arc<PromptBuilder>,
38 telemetry: Arc<Telemetry>,
39 cx: &mut AppContext,
40) {
41 cx.set_global(TerminalInlineAssistant::new(fs, prompt_builder, telemetry));
42}
43
44const PROMPT_HISTORY_MAX_LEN: usize = 20;
45
46#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
47struct TerminalInlineAssistId(usize);
48
49impl TerminalInlineAssistId {
50 fn post_inc(&mut self) -> TerminalInlineAssistId {
51 let id = *self;
52 self.0 += 1;
53 id
54 }
55}
56
57pub struct TerminalInlineAssistant {
58 next_assist_id: TerminalInlineAssistId,
59 assists: HashMap<TerminalInlineAssistId, TerminalInlineAssist>,
60 prompt_history: VecDeque<String>,
61 telemetry: Option<Arc<Telemetry>>,
62 fs: Arc<dyn Fs>,
63 prompt_builder: Arc<PromptBuilder>,
64}
65
66impl Global for TerminalInlineAssistant {}
67
68impl TerminalInlineAssistant {
69 pub fn new(
70 fs: Arc<dyn Fs>,
71 prompt_builder: Arc<PromptBuilder>,
72 telemetry: Arc<Telemetry>,
73 ) -> Self {
74 Self {
75 next_assist_id: TerminalInlineAssistId::default(),
76 assists: HashMap::default(),
77 prompt_history: VecDeque::default(),
78 telemetry: Some(telemetry),
79 fs,
80 prompt_builder,
81 }
82 }
83
84 pub fn assist(
85 &mut self,
86 terminal_view: &View<TerminalView>,
87 workspace: Option<WeakView<Workspace>>,
88 assistant_panel: Option<&View<AssistantPanel>>,
89 initial_prompt: Option<String>,
90 cx: &mut WindowContext,
91 ) {
92 let terminal = terminal_view.read(cx).terminal().clone();
93 let assist_id = self.next_assist_id.post_inc();
94 let prompt_buffer =
95 cx.new_model(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx));
96 let prompt_buffer = cx.new_model(|cx| MultiBuffer::singleton(prompt_buffer, cx));
97 let codegen = cx.new_model(|_| Codegen::new(terminal, self.telemetry.clone()));
98
99 let prompt_editor = cx.new_view(|cx| {
100 PromptEditor::new(
101 assist_id,
102 self.prompt_history.clone(),
103 prompt_buffer.clone(),
104 codegen,
105 assistant_panel,
106 workspace.clone(),
107 self.fs.clone(),
108 cx,
109 )
110 });
111 let prompt_editor_render = prompt_editor.clone();
112 let block = terminal_view::BlockProperties {
113 height: 2,
114 render: Box::new(move |_| prompt_editor_render.clone().into_any_element()),
115 };
116 terminal_view.update(cx, |terminal_view, cx| {
117 terminal_view.set_block_below_cursor(block, cx);
118 });
119
120 let terminal_assistant = TerminalInlineAssist::new(
121 assist_id,
122 terminal_view,
123 assistant_panel.is_some(),
124 prompt_editor,
125 workspace.clone(),
126 cx,
127 );
128
129 self.assists.insert(assist_id, terminal_assistant);
130
131 self.focus_assist(assist_id, cx);
132 }
133
134 fn focus_assist(&mut self, assist_id: TerminalInlineAssistId, cx: &mut WindowContext) {
135 let assist = &self.assists[&assist_id];
136 if let Some(prompt_editor) = assist.prompt_editor.as_ref() {
137 prompt_editor.update(cx, |this, cx| {
138 this.editor.update(cx, |editor, cx| {
139 editor.focus(cx);
140 editor.select_all(&SelectAll, cx);
141 });
142 });
143 }
144 }
145
146 fn handle_prompt_editor_event(
147 &mut self,
148 prompt_editor: View<PromptEditor>,
149 event: &PromptEditorEvent,
150 cx: &mut WindowContext,
151 ) {
152 let assist_id = prompt_editor.read(cx).id;
153 match event {
154 PromptEditorEvent::StartRequested => {
155 self.start_assist(assist_id, cx);
156 }
157 PromptEditorEvent::StopRequested => {
158 self.stop_assist(assist_id, cx);
159 }
160 PromptEditorEvent::ConfirmRequested { execute } => {
161 self.finish_assist(assist_id, false, *execute, cx);
162 }
163 PromptEditorEvent::CancelRequested => {
164 self.finish_assist(assist_id, true, false, cx);
165 }
166 PromptEditorEvent::DismissRequested => {
167 self.dismiss_assist(assist_id, cx);
168 }
169 PromptEditorEvent::Resized { height_in_lines } => {
170 self.insert_prompt_editor_into_terminal(assist_id, *height_in_lines, cx);
171 }
172 }
173 }
174
175 fn start_assist(&mut self, assist_id: TerminalInlineAssistId, cx: &mut WindowContext) {
176 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
177 assist
178 } else {
179 return;
180 };
181
182 let Some(user_prompt) = assist
183 .prompt_editor
184 .as_ref()
185 .map(|editor| editor.read(cx).prompt(cx))
186 else {
187 return;
188 };
189
190 self.prompt_history.retain(|prompt| *prompt != user_prompt);
191 self.prompt_history.push_back(user_prompt.clone());
192 if self.prompt_history.len() > PROMPT_HISTORY_MAX_LEN {
193 self.prompt_history.pop_front();
194 }
195
196 assist
197 .terminal
198 .update(cx, |terminal, cx| {
199 terminal
200 .terminal()
201 .update(cx, |terminal, _| terminal.input(CLEAR_INPUT.to_string()));
202 })
203 .log_err();
204
205 let codegen = assist.codegen.clone();
206 let Some(request) = self.request_for_inline_assist(assist_id, cx).log_err() else {
207 return;
208 };
209
210 codegen.update(cx, |codegen, cx| codegen.start(request, cx));
211 }
212
213 fn stop_assist(&mut self, assist_id: TerminalInlineAssistId, cx: &mut WindowContext) {
214 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
215 assist
216 } else {
217 return;
218 };
219
220 assist.codegen.update(cx, |codegen, cx| codegen.stop(cx));
221 }
222
223 fn request_for_inline_assist(
224 &self,
225 assist_id: TerminalInlineAssistId,
226 cx: &mut WindowContext,
227 ) -> Result<LanguageModelRequest> {
228 let assist = self.assists.get(&assist_id).context("invalid assist")?;
229
230 let shell = std::env::var("SHELL").ok();
231 let (latest_output, working_directory) = assist
232 .terminal
233 .update(cx, |terminal, cx| {
234 let terminal = terminal.model().read(cx);
235 let latest_output = terminal.last_n_non_empty_lines(DEFAULT_CONTEXT_LINES);
236 let working_directory = terminal
237 .working_directory()
238 .map(|path| path.to_string_lossy().to_string());
239 (latest_output, working_directory)
240 })
241 .ok()
242 .unwrap_or_default();
243
244 let context_request = if assist.include_context {
245 assist.workspace.as_ref().and_then(|workspace| {
246 let workspace = workspace.upgrade()?.read(cx);
247 let assistant_panel = workspace.panel::<AssistantPanel>(cx)?;
248 Some(
249 assistant_panel
250 .read(cx)
251 .active_context(cx)?
252 .read(cx)
253 .to_completion_request(cx),
254 )
255 })
256 } else {
257 None
258 };
259
260 let prompt = self.prompt_builder.generate_terminal_assistant_prompt(
261 &assist
262 .prompt_editor
263 .clone()
264 .context("invalid assist")?
265 .read(cx)
266 .prompt(cx),
267 shell.as_deref(),
268 working_directory.as_deref(),
269 &latest_output,
270 )?;
271
272 let mut messages = Vec::new();
273 if let Some(context_request) = context_request {
274 messages = context_request.messages;
275 }
276
277 messages.push(LanguageModelRequestMessage {
278 role: Role::User,
279 content: vec![prompt.into()],
280 cache: false,
281 });
282
283 Ok(LanguageModelRequest {
284 messages,
285 tools: Vec::new(),
286 stop: Vec::new(),
287 temperature: 1.0,
288 })
289 }
290
291 fn finish_assist(
292 &mut self,
293 assist_id: TerminalInlineAssistId,
294 undo: bool,
295 execute: bool,
296 cx: &mut WindowContext,
297 ) {
298 self.dismiss_assist(assist_id, cx);
299
300 if let Some(assist) = self.assists.remove(&assist_id) {
301 assist
302 .terminal
303 .update(cx, |this, cx| {
304 this.clear_block_below_cursor(cx);
305 this.focus_handle(cx).focus(cx);
306 })
307 .log_err();
308 assist.codegen.update(cx, |codegen, cx| {
309 if undo {
310 codegen.undo(cx);
311 } else if execute {
312 codegen.complete(cx);
313 }
314 });
315 }
316 }
317
318 fn dismiss_assist(
319 &mut self,
320 assist_id: TerminalInlineAssistId,
321 cx: &mut WindowContext,
322 ) -> bool {
323 let Some(assist) = self.assists.get_mut(&assist_id) else {
324 return false;
325 };
326 if assist.prompt_editor.is_none() {
327 return false;
328 }
329 assist.prompt_editor = None;
330 assist
331 .terminal
332 .update(cx, |this, cx| {
333 this.clear_block_below_cursor(cx);
334 this.focus_handle(cx).focus(cx);
335 })
336 .is_ok()
337 }
338
339 fn insert_prompt_editor_into_terminal(
340 &mut self,
341 assist_id: TerminalInlineAssistId,
342 height: u8,
343 cx: &mut WindowContext,
344 ) {
345 if let Some(assist) = self.assists.get_mut(&assist_id) {
346 if let Some(prompt_editor) = assist.prompt_editor.as_ref().cloned() {
347 assist
348 .terminal
349 .update(cx, |terminal, cx| {
350 terminal.clear_block_below_cursor(cx);
351 let block = terminal_view::BlockProperties {
352 height,
353 render: Box::new(move |_| prompt_editor.clone().into_any_element()),
354 };
355 terminal.set_block_below_cursor(block, cx);
356 })
357 .log_err();
358 }
359 }
360 }
361}
362
363struct TerminalInlineAssist {
364 terminal: WeakView<TerminalView>,
365 prompt_editor: Option<View<PromptEditor>>,
366 codegen: Model<Codegen>,
367 workspace: Option<WeakView<Workspace>>,
368 include_context: bool,
369 _subscriptions: Vec<Subscription>,
370}
371
372impl TerminalInlineAssist {
373 pub fn new(
374 assist_id: TerminalInlineAssistId,
375 terminal: &View<TerminalView>,
376 include_context: bool,
377 prompt_editor: View<PromptEditor>,
378 workspace: Option<WeakView<Workspace>>,
379 cx: &mut WindowContext,
380 ) -> Self {
381 let codegen = prompt_editor.read(cx).codegen.clone();
382 Self {
383 terminal: terminal.downgrade(),
384 prompt_editor: Some(prompt_editor.clone()),
385 codegen: codegen.clone(),
386 workspace: workspace.clone(),
387 include_context,
388 _subscriptions: vec![
389 cx.subscribe(&prompt_editor, |prompt_editor, event, cx| {
390 TerminalInlineAssistant::update_global(cx, |this, cx| {
391 this.handle_prompt_editor_event(prompt_editor, event, cx)
392 })
393 }),
394 cx.subscribe(&codegen, move |codegen, event, cx| {
395 TerminalInlineAssistant::update_global(cx, |this, cx| match event {
396 CodegenEvent::Finished => {
397 let assist = if let Some(assist) = this.assists.get(&assist_id) {
398 assist
399 } else {
400 return;
401 };
402
403 if let CodegenStatus::Error(error) = &codegen.read(cx).status {
404 if assist.prompt_editor.is_none() {
405 if let Some(workspace) = assist
406 .workspace
407 .as_ref()
408 .and_then(|workspace| workspace.upgrade())
409 {
410 let error =
411 format!("Terminal inline assistant error: {}", error);
412 workspace.update(cx, |workspace, cx| {
413 struct InlineAssistantError;
414
415 let id =
416 NotificationId::identified::<InlineAssistantError>(
417 assist_id.0,
418 );
419
420 workspace.show_toast(Toast::new(id, error), cx);
421 })
422 }
423 }
424 }
425
426 if assist.prompt_editor.is_none() {
427 this.finish_assist(assist_id, false, false, cx);
428 }
429 }
430 })
431 }),
432 ],
433 }
434 }
435}
436
437enum PromptEditorEvent {
438 StartRequested,
439 StopRequested,
440 ConfirmRequested { execute: bool },
441 CancelRequested,
442 DismissRequested,
443 Resized { height_in_lines: u8 },
444}
445
446struct PromptEditor {
447 id: TerminalInlineAssistId,
448 fs: Arc<dyn Fs>,
449 height_in_lines: u8,
450 editor: View<Editor>,
451 edited_since_done: bool,
452 prompt_history: VecDeque<String>,
453 prompt_history_ix: Option<usize>,
454 pending_prompt: String,
455 codegen: Model<Codegen>,
456 _codegen_subscription: Subscription,
457 editor_subscriptions: Vec<Subscription>,
458 pending_token_count: Task<Result<()>>,
459 token_count: Option<usize>,
460 _token_count_subscriptions: Vec<Subscription>,
461 workspace: Option<WeakView<Workspace>>,
462}
463
464impl EventEmitter<PromptEditorEvent> for PromptEditor {}
465
466impl Render for PromptEditor {
467 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
468 let buttons = match &self.codegen.read(cx).status {
469 CodegenStatus::Idle => {
470 vec![
471 IconButton::new("cancel", IconName::Close)
472 .icon_color(Color::Muted)
473 .shape(IconButtonShape::Square)
474 .tooltip(|cx| Tooltip::for_action("Cancel Assist", &menu::Cancel, cx))
475 .on_click(
476 cx.listener(|_, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
477 ),
478 IconButton::new("start", IconName::SparkleAlt)
479 .icon_color(Color::Muted)
480 .shape(IconButtonShape::Square)
481 .tooltip(|cx| Tooltip::for_action("Generate", &menu::Confirm, cx))
482 .on_click(
483 cx.listener(|_, _, cx| cx.emit(PromptEditorEvent::StartRequested)),
484 ),
485 ]
486 }
487 CodegenStatus::Pending => {
488 vec![
489 IconButton::new("cancel", IconName::Close)
490 .icon_color(Color::Muted)
491 .shape(IconButtonShape::Square)
492 .tooltip(|cx| Tooltip::text("Cancel Assist", cx))
493 .on_click(
494 cx.listener(|_, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
495 ),
496 IconButton::new("stop", IconName::Stop)
497 .icon_color(Color::Error)
498 .shape(IconButtonShape::Square)
499 .tooltip(|cx| {
500 Tooltip::with_meta(
501 "Interrupt Generation",
502 Some(&menu::Cancel),
503 "Changes won't be discarded",
504 cx,
505 )
506 })
507 .on_click(
508 cx.listener(|_, _, cx| cx.emit(PromptEditorEvent::StopRequested)),
509 ),
510 ]
511 }
512 CodegenStatus::Error(_) | CodegenStatus::Done => {
513 let cancel = IconButton::new("cancel", IconName::Close)
514 .icon_color(Color::Muted)
515 .shape(IconButtonShape::Square)
516 .tooltip(|cx| Tooltip::for_action("Cancel Assist", &menu::Cancel, cx))
517 .on_click(cx.listener(|_, _, cx| cx.emit(PromptEditorEvent::CancelRequested)));
518
519 if self.edited_since_done {
520 vec![
521 cancel,
522 IconButton::new("restart", IconName::RotateCw)
523 .icon_color(Color::Info)
524 .shape(IconButtonShape::Square)
525 .tooltip(|cx| {
526 Tooltip::with_meta(
527 "Restart Generation",
528 Some(&menu::Confirm),
529 "Changes will be discarded",
530 cx,
531 )
532 })
533 .on_click(cx.listener(|_, _, cx| {
534 cx.emit(PromptEditorEvent::StartRequested);
535 })),
536 ]
537 } else {
538 vec![
539 cancel,
540 IconButton::new("accept", IconName::Check)
541 .icon_color(Color::Info)
542 .shape(IconButtonShape::Square)
543 .tooltip(|cx| {
544 Tooltip::for_action("Accept Generated Command", &menu::Confirm, cx)
545 })
546 .on_click(cx.listener(|_, _, cx| {
547 cx.emit(PromptEditorEvent::ConfirmRequested { execute: false });
548 })),
549 IconButton::new("confirm", IconName::Play)
550 .icon_color(Color::Info)
551 .shape(IconButtonShape::Square)
552 .tooltip(|cx| {
553 Tooltip::for_action(
554 "Execute Generated Command",
555 &menu::SecondaryConfirm,
556 cx,
557 )
558 })
559 .on_click(cx.listener(|_, _, cx| {
560 cx.emit(PromptEditorEvent::ConfirmRequested { execute: true });
561 })),
562 ]
563 }
564 }
565 };
566
567 h_flex()
568 .bg(cx.theme().colors().editor_background)
569 .border_y_1()
570 .border_color(cx.theme().status().info_border)
571 .py_1p5()
572 .h_full()
573 .w_full()
574 .on_action(cx.listener(Self::confirm))
575 .on_action(cx.listener(Self::secondary_confirm))
576 .on_action(cx.listener(Self::cancel))
577 .on_action(cx.listener(Self::move_up))
578 .on_action(cx.listener(Self::move_down))
579 .child(
580 h_flex()
581 .w_12()
582 .justify_center()
583 .gap_2()
584 .child(ModelSelector::new(
585 self.fs.clone(),
586 IconButton::new("context", IconName::SlidersAlt)
587 .shape(IconButtonShape::Square)
588 .icon_size(IconSize::Small)
589 .icon_color(Color::Muted)
590 .tooltip(move |cx| {
591 Tooltip::with_meta(
592 format!(
593 "Using {}",
594 LanguageModelRegistry::read_global(cx)
595 .active_model()
596 .map(|model| model.name().0)
597 .unwrap_or_else(|| "No model selected".into()),
598 ),
599 None,
600 "Change Model",
601 cx,
602 )
603 }),
604 ))
605 .children(
606 if let CodegenStatus::Error(error) = &self.codegen.read(cx).status {
607 let error_message = SharedString::from(error.to_string());
608 Some(
609 div()
610 .id("error")
611 .tooltip(move |cx| Tooltip::text(error_message.clone(), cx))
612 .child(
613 Icon::new(IconName::XCircle)
614 .size(IconSize::Small)
615 .color(Color::Error),
616 ),
617 )
618 } else {
619 None
620 },
621 ),
622 )
623 .child(div().flex_1().child(self.render_prompt_editor(cx)))
624 .child(
625 h_flex()
626 .gap_1()
627 .pr_4()
628 .children(self.render_token_count(cx))
629 .children(buttons),
630 )
631 }
632}
633
634impl FocusableView for PromptEditor {
635 fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
636 self.editor.focus_handle(cx)
637 }
638}
639
640impl PromptEditor {
641 const MAX_LINES: u8 = 8;
642
643 #[allow(clippy::too_many_arguments)]
644 fn new(
645 id: TerminalInlineAssistId,
646 prompt_history: VecDeque<String>,
647 prompt_buffer: Model<MultiBuffer>,
648 codegen: Model<Codegen>,
649 assistant_panel: Option<&View<AssistantPanel>>,
650 workspace: Option<WeakView<Workspace>>,
651 fs: Arc<dyn Fs>,
652 cx: &mut ViewContext<Self>,
653 ) -> Self {
654 let prompt_editor = cx.new_view(|cx| {
655 let mut editor = Editor::new(
656 EditorMode::AutoHeight {
657 max_lines: Self::MAX_LINES as usize,
658 },
659 prompt_buffer,
660 None,
661 false,
662 cx,
663 );
664 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
665 editor.set_placeholder_text("Add a prompt…", cx);
666 editor
667 });
668
669 let mut token_count_subscriptions = Vec::new();
670 if let Some(assistant_panel) = assistant_panel {
671 token_count_subscriptions
672 .push(cx.subscribe(assistant_panel, Self::handle_assistant_panel_event));
673 }
674
675 let mut this = Self {
676 id,
677 height_in_lines: 1,
678 editor: prompt_editor,
679 edited_since_done: false,
680 prompt_history,
681 prompt_history_ix: None,
682 pending_prompt: String::new(),
683 _codegen_subscription: cx.observe(&codegen, Self::handle_codegen_changed),
684 editor_subscriptions: Vec::new(),
685 codegen,
686 fs,
687 pending_token_count: Task::ready(Ok(())),
688 token_count: None,
689 _token_count_subscriptions: token_count_subscriptions,
690 workspace,
691 };
692 this.count_lines(cx);
693 this.count_tokens(cx);
694 this.subscribe_to_editor(cx);
695 this
696 }
697
698 fn subscribe_to_editor(&mut self, cx: &mut ViewContext<Self>) {
699 self.editor_subscriptions.clear();
700 self.editor_subscriptions
701 .push(cx.observe(&self.editor, Self::handle_prompt_editor_changed));
702 self.editor_subscriptions
703 .push(cx.subscribe(&self.editor, Self::handle_prompt_editor_events));
704 }
705
706 fn prompt(&self, cx: &AppContext) -> String {
707 self.editor.read(cx).text(cx)
708 }
709
710 fn count_lines(&mut self, cx: &mut ViewContext<Self>) {
711 let height_in_lines = cmp::max(
712 2, // Make the editor at least two lines tall, to account for padding and buttons.
713 cmp::min(
714 self.editor
715 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1),
716 Self::MAX_LINES as u32,
717 ),
718 ) as u8;
719
720 if height_in_lines != self.height_in_lines {
721 self.height_in_lines = height_in_lines;
722 cx.emit(PromptEditorEvent::Resized { height_in_lines });
723 }
724 }
725
726 fn handle_assistant_panel_event(
727 &mut self,
728 _: View<AssistantPanel>,
729 event: &AssistantPanelEvent,
730 cx: &mut ViewContext<Self>,
731 ) {
732 let AssistantPanelEvent::ContextEdited { .. } = event;
733 self.count_tokens(cx);
734 }
735
736 fn count_tokens(&mut self, cx: &mut ViewContext<Self>) {
737 let assist_id = self.id;
738 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
739 return;
740 };
741 self.pending_token_count = cx.spawn(|this, mut cx| async move {
742 cx.background_executor().timer(Duration::from_secs(1)).await;
743 let request =
744 cx.update_global(|inline_assistant: &mut TerminalInlineAssistant, cx| {
745 inline_assistant.request_for_inline_assist(assist_id, cx)
746 })??;
747
748 let token_count = cx.update(|cx| model.count_tokens(request, cx))?.await?;
749 this.update(&mut cx, |this, cx| {
750 this.token_count = Some(token_count);
751 cx.notify();
752 })
753 })
754 }
755
756 fn handle_prompt_editor_changed(&mut self, _: View<Editor>, cx: &mut ViewContext<Self>) {
757 self.count_lines(cx);
758 }
759
760 fn handle_prompt_editor_events(
761 &mut self,
762 _: View<Editor>,
763 event: &EditorEvent,
764 cx: &mut ViewContext<Self>,
765 ) {
766 match event {
767 EditorEvent::Edited { .. } => {
768 let prompt = self.editor.read(cx).text(cx);
769 if self
770 .prompt_history_ix
771 .map_or(true, |ix| self.prompt_history[ix] != prompt)
772 {
773 self.prompt_history_ix.take();
774 self.pending_prompt = prompt;
775 }
776
777 self.edited_since_done = true;
778 cx.notify();
779 }
780 EditorEvent::BufferEdited => {
781 self.count_tokens(cx);
782 }
783 _ => {}
784 }
785 }
786
787 fn handle_codegen_changed(&mut self, _: Model<Codegen>, cx: &mut ViewContext<Self>) {
788 match &self.codegen.read(cx).status {
789 CodegenStatus::Idle => {
790 self.editor
791 .update(cx, |editor, _| editor.set_read_only(false));
792 }
793 CodegenStatus::Pending => {
794 self.editor
795 .update(cx, |editor, _| editor.set_read_only(true));
796 }
797 CodegenStatus::Done | CodegenStatus::Error(_) => {
798 self.edited_since_done = false;
799 self.editor
800 .update(cx, |editor, _| editor.set_read_only(false));
801 }
802 }
803 }
804
805 fn cancel(&mut self, _: &editor::actions::Cancel, cx: &mut ViewContext<Self>) {
806 match &self.codegen.read(cx).status {
807 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
808 cx.emit(PromptEditorEvent::CancelRequested);
809 }
810 CodegenStatus::Pending => {
811 cx.emit(PromptEditorEvent::StopRequested);
812 }
813 }
814 }
815
816 fn confirm(&mut self, _: &menu::Confirm, cx: &mut ViewContext<Self>) {
817 match &self.codegen.read(cx).status {
818 CodegenStatus::Idle => {
819 if !self.editor.read(cx).text(cx).trim().is_empty() {
820 cx.emit(PromptEditorEvent::StartRequested);
821 }
822 }
823 CodegenStatus::Pending => {
824 cx.emit(PromptEditorEvent::DismissRequested);
825 }
826 CodegenStatus::Done => {
827 if self.edited_since_done {
828 cx.emit(PromptEditorEvent::StartRequested);
829 } else {
830 cx.emit(PromptEditorEvent::ConfirmRequested { execute: false });
831 }
832 }
833 CodegenStatus::Error(_) => {
834 cx.emit(PromptEditorEvent::StartRequested);
835 }
836 }
837 }
838
839 fn secondary_confirm(&mut self, _: &menu::SecondaryConfirm, cx: &mut ViewContext<Self>) {
840 if matches!(self.codegen.read(cx).status, CodegenStatus::Done) {
841 cx.emit(PromptEditorEvent::ConfirmRequested { execute: true });
842 }
843 }
844
845 fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
846 if let Some(ix) = self.prompt_history_ix {
847 if ix > 0 {
848 self.prompt_history_ix = Some(ix - 1);
849 let prompt = self.prompt_history[ix - 1].as_str();
850 self.editor.update(cx, |editor, cx| {
851 editor.set_text(prompt, cx);
852 editor.move_to_beginning(&Default::default(), cx);
853 });
854 }
855 } else if !self.prompt_history.is_empty() {
856 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
857 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
858 self.editor.update(cx, |editor, cx| {
859 editor.set_text(prompt, cx);
860 editor.move_to_beginning(&Default::default(), cx);
861 });
862 }
863 }
864
865 fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
866 if let Some(ix) = self.prompt_history_ix {
867 if ix < self.prompt_history.len() - 1 {
868 self.prompt_history_ix = Some(ix + 1);
869 let prompt = self.prompt_history[ix + 1].as_str();
870 self.editor.update(cx, |editor, cx| {
871 editor.set_text(prompt, cx);
872 editor.move_to_end(&Default::default(), cx)
873 });
874 } else {
875 self.prompt_history_ix = None;
876 let prompt = self.pending_prompt.as_str();
877 self.editor.update(cx, |editor, cx| {
878 editor.set_text(prompt, cx);
879 editor.move_to_end(&Default::default(), cx)
880 });
881 }
882 }
883 }
884
885 fn render_token_count(&self, cx: &mut ViewContext<Self>) -> Option<impl IntoElement> {
886 let model = LanguageModelRegistry::read_global(cx).active_model()?;
887 let token_count = self.token_count?;
888 let max_token_count = model.max_token_count();
889
890 let remaining_tokens = max_token_count as isize - token_count as isize;
891 let token_count_color = if remaining_tokens <= 0 {
892 Color::Error
893 } else if token_count as f32 / max_token_count as f32 >= 0.8 {
894 Color::Warning
895 } else {
896 Color::Muted
897 };
898
899 let mut token_count = h_flex()
900 .id("token_count")
901 .gap_0p5()
902 .child(
903 Label::new(humanize_token_count(token_count))
904 .size(LabelSize::Small)
905 .color(token_count_color),
906 )
907 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
908 .child(
909 Label::new(humanize_token_count(max_token_count))
910 .size(LabelSize::Small)
911 .color(Color::Muted),
912 );
913 if let Some(workspace) = self.workspace.clone() {
914 token_count = token_count
915 .tooltip(|cx| {
916 Tooltip::with_meta(
917 "Tokens Used by Inline Assistant",
918 None,
919 "Click to Open Assistant Panel",
920 cx,
921 )
922 })
923 .cursor_pointer()
924 .on_mouse_down(gpui::MouseButton::Left, |_, cx| cx.stop_propagation())
925 .on_click(move |_, cx| {
926 cx.stop_propagation();
927 workspace
928 .update(cx, |workspace, cx| {
929 workspace.focus_panel::<AssistantPanel>(cx)
930 })
931 .ok();
932 });
933 } else {
934 token_count = token_count
935 .cursor_default()
936 .tooltip(|cx| Tooltip::text("Tokens Used by Inline Assistant", cx));
937 }
938
939 Some(token_count)
940 }
941
942 fn render_prompt_editor(&self, cx: &mut ViewContext<Self>) -> impl IntoElement {
943 let settings = ThemeSettings::get_global(cx);
944 let text_style = TextStyle {
945 color: if self.editor.read(cx).read_only(cx) {
946 cx.theme().colors().text_disabled
947 } else {
948 cx.theme().colors().text
949 },
950 font_family: settings.ui_font.family.clone(),
951 font_features: settings.ui_font.features.clone(),
952 font_fallbacks: settings.ui_font.fallbacks.clone(),
953 font_size: rems(0.875).into(),
954 font_weight: settings.ui_font.weight,
955 line_height: relative(1.3),
956 ..Default::default()
957 };
958 EditorElement::new(
959 &self.editor,
960 EditorStyle {
961 background: cx.theme().colors().editor_background,
962 local_player: cx.theme().players().local(),
963 text: text_style,
964 ..Default::default()
965 },
966 )
967 }
968}
969
970#[derive(Debug)]
971pub enum CodegenEvent {
972 Finished,
973}
974
975impl EventEmitter<CodegenEvent> for Codegen {}
976
977const CLEAR_INPUT: &str = "\x15";
978const CARRIAGE_RETURN: &str = "\x0d";
979
980struct TerminalTransaction {
981 terminal: Model<Terminal>,
982}
983
984impl TerminalTransaction {
985 pub fn start(terminal: Model<Terminal>) -> Self {
986 Self { terminal }
987 }
988
989 pub fn push(&mut self, hunk: String, cx: &mut AppContext) {
990 // Ensure that the assistant cannot accidentally execute commands that are streamed into the terminal
991 let input = hunk.replace(CARRIAGE_RETURN, " ");
992 self.terminal
993 .update(cx, |terminal, _| terminal.input(input));
994 }
995
996 pub fn undo(&self, cx: &mut AppContext) {
997 self.terminal
998 .update(cx, |terminal, _| terminal.input(CLEAR_INPUT.to_string()));
999 }
1000
1001 pub fn complete(&self, cx: &mut AppContext) {
1002 self.terminal.update(cx, |terminal, _| {
1003 terminal.input(CARRIAGE_RETURN.to_string())
1004 });
1005 }
1006}
1007
1008pub struct Codegen {
1009 status: CodegenStatus,
1010 telemetry: Option<Arc<Telemetry>>,
1011 terminal: Model<Terminal>,
1012 generation: Task<()>,
1013 transaction: Option<TerminalTransaction>,
1014}
1015
1016impl Codegen {
1017 pub fn new(terminal: Model<Terminal>, telemetry: Option<Arc<Telemetry>>) -> Self {
1018 Self {
1019 terminal,
1020 telemetry,
1021 status: CodegenStatus::Idle,
1022 generation: Task::ready(()),
1023 transaction: None,
1024 }
1025 }
1026
1027 pub fn start(&mut self, prompt: LanguageModelRequest, cx: &mut ModelContext<Self>) {
1028 let Some(model) = LanguageModelRegistry::read_global(cx).active_model() else {
1029 return;
1030 };
1031
1032 let telemetry = self.telemetry.clone();
1033 self.status = CodegenStatus::Pending;
1034 self.transaction = Some(TerminalTransaction::start(self.terminal.clone()));
1035 self.generation = cx.spawn(|this, mut cx| async move {
1036 let model_telemetry_id = model.telemetry_id();
1037 let response = model.stream_completion_text(prompt, &cx).await;
1038 let generate = async {
1039 let (mut hunks_tx, mut hunks_rx) = mpsc::channel(1);
1040
1041 let task = cx.background_executor().spawn(async move {
1042 let mut response_latency = None;
1043 let request_start = Instant::now();
1044 let task = async {
1045 let mut chunks = response?;
1046 while let Some(chunk) = chunks.next().await {
1047 if response_latency.is_none() {
1048 response_latency = Some(request_start.elapsed());
1049 }
1050 let chunk = chunk?;
1051 hunks_tx.send(chunk).await?;
1052 }
1053
1054 anyhow::Ok(())
1055 };
1056
1057 let result = task.await;
1058
1059 let error_message = result.as_ref().err().map(|error| error.to_string());
1060 if let Some(telemetry) = telemetry {
1061 telemetry.report_assistant_event(
1062 None,
1063 telemetry_events::AssistantKind::Inline,
1064 model_telemetry_id,
1065 response_latency,
1066 error_message,
1067 );
1068 }
1069
1070 result?;
1071 anyhow::Ok(())
1072 });
1073
1074 while let Some(hunk) = hunks_rx.next().await {
1075 this.update(&mut cx, |this, cx| {
1076 if let Some(transaction) = &mut this.transaction {
1077 transaction.push(hunk, cx);
1078 cx.notify();
1079 }
1080 })?;
1081 }
1082
1083 task.await?;
1084 anyhow::Ok(())
1085 };
1086
1087 let result = generate.await;
1088
1089 this.update(&mut cx, |this, cx| {
1090 if let Err(error) = result {
1091 this.status = CodegenStatus::Error(error);
1092 } else {
1093 this.status = CodegenStatus::Done;
1094 }
1095 cx.emit(CodegenEvent::Finished);
1096 cx.notify();
1097 })
1098 .ok();
1099 });
1100 cx.notify();
1101 }
1102
1103 pub fn stop(&mut self, cx: &mut ModelContext<Self>) {
1104 self.status = CodegenStatus::Done;
1105 self.generation = Task::ready(());
1106 cx.emit(CodegenEvent::Finished);
1107 cx.notify();
1108 }
1109
1110 pub fn complete(&mut self, cx: &mut ModelContext<Self>) {
1111 if let Some(transaction) = self.transaction.take() {
1112 transaction.complete(cx);
1113 }
1114 }
1115
1116 pub fn undo(&mut self, cx: &mut ModelContext<Self>) {
1117 if let Some(transaction) = self.transaction.take() {
1118 transaction.undo(cx);
1119 }
1120 }
1121}
1122
1123enum CodegenStatus {
1124 Idle,
1125 Pending,
1126 Done,
1127 Error(anyhow::Error),
1128}