1use crate::{
2 AssistantPanel, AssistantPanelEvent, CycleNextInlineAssist, CyclePreviousInlineAssist,
3};
4use anyhow::{anyhow, Context as _, Result};
5use assistant_context_editor::{humanize_token_count, RequestType};
6use assistant_settings::AssistantSettings;
7use client::{telemetry::Telemetry, ErrorExt};
8use collections::{hash_map, HashMap, HashSet, VecDeque};
9use editor::{
10 actions::{MoveDown, MoveUp, SelectAll},
11 display_map::{
12 BlockContext, BlockPlacement, BlockProperties, BlockStyle, CustomBlockId, RenderBlock,
13 ToDisplayPoint,
14 },
15 Anchor, AnchorRangeExt, CodeActionProvider, Editor, EditorElement, EditorEvent, EditorMode,
16 EditorStyle, ExcerptId, ExcerptRange, GutterDimensions, MultiBuffer, MultiBufferSnapshot,
17 ToOffset as _, ToPoint,
18};
19use feature_flags::{
20 Assistant2FeatureFlag, FeatureFlagAppExt as _, FeatureFlagViewExt as _, ZedPro,
21};
22use fs::Fs;
23use futures::{
24 channel::mpsc,
25 future::{BoxFuture, LocalBoxFuture},
26 join, SinkExt, Stream, StreamExt,
27};
28use gpui::{
29 anchored, deferred, point, AnyElement, App, ClickEvent, Context, CursorStyle, Entity,
30 EventEmitter, FocusHandle, Focusable, FontWeight, Global, HighlightStyle, Subscription, Task,
31 TextStyle, UpdateGlobal, WeakEntity, Window,
32};
33use language::{Buffer, IndentKind, Point, Selection, TransactionId};
34use language_model::{
35 LanguageModel, LanguageModelRegistry, LanguageModelRequest, LanguageModelRequestMessage,
36 LanguageModelTextStream, Role,
37};
38use language_model_selector::{LanguageModelSelector, LanguageModelSelectorPopoverMenu};
39use language_models::report_assistant_event;
40use multi_buffer::MultiBufferRow;
41use parking_lot::Mutex;
42use project::{CodeAction, ProjectTransaction};
43use prompt_library::PromptBuilder;
44use rope::Rope;
45use settings::{update_settings_file, Settings, SettingsStore};
46use smol::future::FutureExt;
47use std::{
48 cmp,
49 future::{self, Future},
50 iter, mem,
51 ops::{Range, RangeInclusive},
52 pin::Pin,
53 rc::Rc,
54 sync::Arc,
55 task::{self, Poll},
56 time::{Duration, Instant},
57};
58use streaming_diff::{CharOperation, LineDiff, LineOperation, StreamingDiff};
59use telemetry_events::{AssistantEvent, AssistantKind, AssistantPhase};
60use terminal_view::terminal_panel::TerminalPanel;
61use text::{OffsetRangeExt, ToPoint as _};
62use theme::ThemeSettings;
63use ui::{
64 prelude::*, text_for_action, CheckboxWithLabel, IconButtonShape, KeyBinding, Popover, Tooltip,
65};
66use util::{RangeExt, ResultExt};
67use workspace::{notifications::NotificationId, ItemHandle, Toast, Workspace};
68
69pub fn init(
70 fs: Arc<dyn Fs>,
71 prompt_builder: Arc<PromptBuilder>,
72 telemetry: Arc<Telemetry>,
73 cx: &mut App,
74) {
75 cx.set_global(InlineAssistant::new(fs, prompt_builder, telemetry));
76 cx.observe_new(|_, window, cx| {
77 let Some(window) = window else {
78 return;
79 };
80 let workspace = cx.entity().clone();
81 InlineAssistant::update_global(cx, |inline_assistant, cx| {
82 inline_assistant.register_workspace(&workspace, window, cx)
83 });
84
85 cx.observe_flag::<Assistant2FeatureFlag, _>(window, {
86 |is_assistant2_enabled, _workspace, _window, cx| {
87 InlineAssistant::update_global(cx, |inline_assistant, _cx| {
88 inline_assistant.is_assistant2_enabled = is_assistant2_enabled;
89 });
90 }
91 })
92 .detach();
93 })
94 .detach();
95}
96
97const PROMPT_HISTORY_MAX_LEN: usize = 20;
98
99pub struct InlineAssistant {
100 next_assist_id: InlineAssistId,
101 next_assist_group_id: InlineAssistGroupId,
102 assists: HashMap<InlineAssistId, InlineAssist>,
103 assists_by_editor: HashMap<WeakEntity<Editor>, EditorInlineAssists>,
104 assist_groups: HashMap<InlineAssistGroupId, InlineAssistGroup>,
105 confirmed_assists: HashMap<InlineAssistId, Entity<CodegenAlternative>>,
106 prompt_history: VecDeque<String>,
107 prompt_builder: Arc<PromptBuilder>,
108 telemetry: Arc<Telemetry>,
109 fs: Arc<dyn Fs>,
110 is_assistant2_enabled: bool,
111}
112
113impl Global for InlineAssistant {}
114
115impl InlineAssistant {
116 pub fn new(
117 fs: Arc<dyn Fs>,
118 prompt_builder: Arc<PromptBuilder>,
119 telemetry: Arc<Telemetry>,
120 ) -> Self {
121 Self {
122 next_assist_id: InlineAssistId::default(),
123 next_assist_group_id: InlineAssistGroupId::default(),
124 assists: HashMap::default(),
125 assists_by_editor: HashMap::default(),
126 assist_groups: HashMap::default(),
127 confirmed_assists: HashMap::default(),
128 prompt_history: VecDeque::default(),
129 prompt_builder,
130 telemetry,
131 fs,
132 is_assistant2_enabled: false,
133 }
134 }
135
136 pub fn register_workspace(
137 &mut self,
138 workspace: &Entity<Workspace>,
139 window: &mut Window,
140 cx: &mut App,
141 ) {
142 window
143 .subscribe(workspace, cx, |workspace, event, window, cx| {
144 Self::update_global(cx, |this, cx| {
145 this.handle_workspace_event(workspace, event, window, cx)
146 });
147 })
148 .detach();
149
150 let workspace = workspace.downgrade();
151 cx.observe_global::<SettingsStore>(move |cx| {
152 let Some(workspace) = workspace.upgrade() else {
153 return;
154 };
155 let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {
156 return;
157 };
158 let enabled = AssistantSettings::get_global(cx).enabled;
159 terminal_panel.update(cx, |terminal_panel, cx| {
160 terminal_panel.set_assistant_enabled(enabled, cx)
161 });
162 })
163 .detach();
164 }
165
166 fn handle_workspace_event(
167 &mut self,
168 workspace: Entity<Workspace>,
169 event: &workspace::Event,
170 window: &mut Window,
171 cx: &mut App,
172 ) {
173 match event {
174 workspace::Event::UserSavedItem { item, .. } => {
175 // When the user manually saves an editor, automatically accepts all finished transformations.
176 if let Some(editor) = item.upgrade().and_then(|item| item.act_as::<Editor>(cx)) {
177 if let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) {
178 for assist_id in editor_assists.assist_ids.clone() {
179 let assist = &self.assists[&assist_id];
180 if let CodegenStatus::Done = assist.codegen.read(cx).status(cx) {
181 self.finish_assist(assist_id, false, window, cx)
182 }
183 }
184 }
185 }
186 }
187 workspace::Event::ItemAdded { item } => {
188 self.register_workspace_item(&workspace, item.as_ref(), window, cx);
189 }
190 _ => (),
191 }
192 }
193
194 fn register_workspace_item(
195 &mut self,
196 workspace: &Entity<Workspace>,
197 item: &dyn ItemHandle,
198 window: &mut Window,
199 cx: &mut App,
200 ) {
201 let is_assistant2_enabled = self.is_assistant2_enabled;
202
203 if let Some(editor) = item.act_as::<Editor>(cx) {
204 editor.update(cx, |editor, cx| {
205 if is_assistant2_enabled {
206 editor.remove_code_action_provider(
207 ASSISTANT_CODE_ACTION_PROVIDER_ID.into(),
208 window,
209 cx,
210 );
211 } else {
212 editor.add_code_action_provider(
213 Rc::new(AssistantCodeActionProvider {
214 editor: cx.entity().downgrade(),
215 workspace: workspace.downgrade(),
216 }),
217 window,
218 cx,
219 );
220 }
221 });
222 }
223 }
224
225 pub fn assist(
226 &mut self,
227 editor: &Entity<Editor>,
228 workspace: Option<WeakEntity<Workspace>>,
229 assistant_panel: Option<&Entity<AssistantPanel>>,
230 initial_prompt: Option<String>,
231 window: &mut Window,
232 cx: &mut App,
233 ) {
234 let (snapshot, initial_selections) = editor.update(cx, |editor, cx| {
235 (
236 editor.buffer().read(cx).snapshot(cx),
237 editor.selections.all::<Point>(cx),
238 )
239 });
240
241 let mut selections = Vec::<Selection<Point>>::new();
242 let mut newest_selection = None;
243 for mut selection in initial_selections {
244 if selection.end > selection.start {
245 selection.start.column = 0;
246 // If the selection ends at the start of the line, we don't want to include it.
247 if selection.end.column == 0 {
248 selection.end.row -= 1;
249 }
250 selection.end.column = snapshot.line_len(MultiBufferRow(selection.end.row));
251 }
252
253 if let Some(prev_selection) = selections.last_mut() {
254 if selection.start <= prev_selection.end {
255 prev_selection.end = selection.end;
256 continue;
257 }
258 }
259
260 let latest_selection = newest_selection.get_or_insert_with(|| selection.clone());
261 if selection.id > latest_selection.id {
262 *latest_selection = selection.clone();
263 }
264 selections.push(selection);
265 }
266 let newest_selection = newest_selection.unwrap();
267
268 let mut codegen_ranges = Vec::new();
269 for (buffer, buffer_range, excerpt_id) in
270 snapshot.ranges_to_buffer_ranges(selections.iter().map(|selection| {
271 snapshot.anchor_before(selection.start)..snapshot.anchor_after(selection.end)
272 }))
273 {
274 let start = buffer.anchor_before(buffer_range.start);
275 let end = buffer.anchor_after(buffer_range.end);
276
277 codegen_ranges.push(Anchor::range_in_buffer(
278 excerpt_id,
279 buffer.remote_id(),
280 start..end,
281 ));
282
283 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
284 self.telemetry.report_assistant_event(AssistantEvent {
285 conversation_id: None,
286 kind: AssistantKind::Inline,
287 phase: AssistantPhase::Invoked,
288 message_id: None,
289 model: model.telemetry_id(),
290 model_provider: model.provider_id().to_string(),
291 response_latency: None,
292 error_message: None,
293 language_name: buffer.language().map(|language| language.name().to_proto()),
294 });
295 }
296 }
297
298 let assist_group_id = self.next_assist_group_id.post_inc();
299 let prompt_buffer = cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx));
300 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
301
302 let mut assists = Vec::new();
303 let mut assist_to_focus = None;
304 for range in codegen_ranges {
305 let assist_id = self.next_assist_id.post_inc();
306 let codegen = cx.new(|cx| {
307 Codegen::new(
308 editor.read(cx).buffer().clone(),
309 range.clone(),
310 None,
311 self.telemetry.clone(),
312 self.prompt_builder.clone(),
313 cx,
314 )
315 });
316
317 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
318 let prompt_editor = cx.new(|cx| {
319 PromptEditor::new(
320 assist_id,
321 gutter_dimensions.clone(),
322 self.prompt_history.clone(),
323 prompt_buffer.clone(),
324 codegen.clone(),
325 editor,
326 assistant_panel,
327 workspace.clone(),
328 self.fs.clone(),
329 window,
330 cx,
331 )
332 });
333
334 if assist_to_focus.is_none() {
335 let focus_assist = if newest_selection.reversed {
336 range.start.to_point(&snapshot) == newest_selection.start
337 } else {
338 range.end.to_point(&snapshot) == newest_selection.end
339 };
340 if focus_assist {
341 assist_to_focus = Some(assist_id);
342 }
343 }
344
345 let [prompt_block_id, end_block_id] =
346 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
347
348 assists.push((
349 assist_id,
350 range,
351 prompt_editor,
352 prompt_block_id,
353 end_block_id,
354 ));
355 }
356
357 let editor_assists = self
358 .assists_by_editor
359 .entry(editor.downgrade())
360 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
361 let mut assist_group = InlineAssistGroup::new();
362 for (assist_id, range, prompt_editor, prompt_block_id, end_block_id) in assists {
363 self.assists.insert(
364 assist_id,
365 InlineAssist::new(
366 assist_id,
367 assist_group_id,
368 assistant_panel.is_some(),
369 editor,
370 &prompt_editor,
371 prompt_block_id,
372 end_block_id,
373 range,
374 prompt_editor.read(cx).codegen.clone(),
375 workspace.clone(),
376 window,
377 cx,
378 ),
379 );
380 assist_group.assist_ids.push(assist_id);
381 editor_assists.assist_ids.push(assist_id);
382 }
383 self.assist_groups.insert(assist_group_id, assist_group);
384
385 if let Some(assist_id) = assist_to_focus {
386 self.focus_assist(assist_id, window, cx);
387 }
388 }
389
390 #[allow(clippy::too_many_arguments)]
391 pub fn suggest_assist(
392 &mut self,
393 editor: &Entity<Editor>,
394 mut range: Range<Anchor>,
395 initial_prompt: String,
396 initial_transaction_id: Option<TransactionId>,
397 focus: bool,
398 workspace: Option<WeakEntity<Workspace>>,
399 assistant_panel: Option<&Entity<AssistantPanel>>,
400 window: &mut Window,
401 cx: &mut App,
402 ) -> InlineAssistId {
403 let assist_group_id = self.next_assist_group_id.post_inc();
404 let prompt_buffer = cx.new(|cx| Buffer::local(&initial_prompt, cx));
405 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
406
407 let assist_id = self.next_assist_id.post_inc();
408
409 let buffer = editor.read(cx).buffer().clone();
410 {
411 let snapshot = buffer.read(cx).read(cx);
412 range.start = range.start.bias_left(&snapshot);
413 range.end = range.end.bias_right(&snapshot);
414 }
415
416 let codegen = cx.new(|cx| {
417 Codegen::new(
418 editor.read(cx).buffer().clone(),
419 range.clone(),
420 initial_transaction_id,
421 self.telemetry.clone(),
422 self.prompt_builder.clone(),
423 cx,
424 )
425 });
426
427 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
428 let prompt_editor = cx.new(|cx| {
429 PromptEditor::new(
430 assist_id,
431 gutter_dimensions.clone(),
432 self.prompt_history.clone(),
433 prompt_buffer.clone(),
434 codegen.clone(),
435 editor,
436 assistant_panel,
437 workspace.clone(),
438 self.fs.clone(),
439 window,
440 cx,
441 )
442 });
443
444 let [prompt_block_id, end_block_id] =
445 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
446
447 let editor_assists = self
448 .assists_by_editor
449 .entry(editor.downgrade())
450 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
451
452 let mut assist_group = InlineAssistGroup::new();
453 self.assists.insert(
454 assist_id,
455 InlineAssist::new(
456 assist_id,
457 assist_group_id,
458 assistant_panel.is_some(),
459 editor,
460 &prompt_editor,
461 prompt_block_id,
462 end_block_id,
463 range,
464 prompt_editor.read(cx).codegen.clone(),
465 workspace.clone(),
466 window,
467 cx,
468 ),
469 );
470 assist_group.assist_ids.push(assist_id);
471 editor_assists.assist_ids.push(assist_id);
472 self.assist_groups.insert(assist_group_id, assist_group);
473
474 if focus {
475 self.focus_assist(assist_id, window, cx);
476 }
477
478 assist_id
479 }
480
481 fn insert_assist_blocks(
482 &self,
483 editor: &Entity<Editor>,
484 range: &Range<Anchor>,
485 prompt_editor: &Entity<PromptEditor>,
486 cx: &mut App,
487 ) -> [CustomBlockId; 2] {
488 let prompt_editor_height = prompt_editor.update(cx, |prompt_editor, cx| {
489 prompt_editor
490 .editor
491 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1 + 2)
492 });
493 let assist_blocks = vec![
494 BlockProperties {
495 style: BlockStyle::Sticky,
496 placement: BlockPlacement::Above(range.start),
497 height: prompt_editor_height,
498 render: build_assist_editor_renderer(prompt_editor),
499 priority: 0,
500 },
501 BlockProperties {
502 style: BlockStyle::Sticky,
503 placement: BlockPlacement::Below(range.end),
504 height: 0,
505 render: Arc::new(|cx| {
506 v_flex()
507 .h_full()
508 .w_full()
509 .border_t_1()
510 .border_color(cx.theme().status().info_border)
511 .into_any_element()
512 }),
513 priority: 0,
514 },
515 ];
516
517 editor.update(cx, |editor, cx| {
518 let block_ids = editor.insert_blocks(assist_blocks, None, cx);
519 [block_ids[0], block_ids[1]]
520 })
521 }
522
523 fn handle_prompt_editor_focus_in(&mut self, assist_id: InlineAssistId, cx: &mut App) {
524 let assist = &self.assists[&assist_id];
525 let Some(decorations) = assist.decorations.as_ref() else {
526 return;
527 };
528 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
529 let editor_assists = self.assists_by_editor.get_mut(&assist.editor).unwrap();
530
531 assist_group.active_assist_id = Some(assist_id);
532 if assist_group.linked {
533 for assist_id in &assist_group.assist_ids {
534 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
535 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
536 prompt_editor.set_show_cursor_when_unfocused(true, cx)
537 });
538 }
539 }
540 }
541
542 assist
543 .editor
544 .update(cx, |editor, cx| {
545 let scroll_top = editor.scroll_position(cx).y;
546 let scroll_bottom = scroll_top + editor.visible_line_count().unwrap_or(0.);
547 let prompt_row = editor
548 .row_for_block(decorations.prompt_block_id, cx)
549 .unwrap()
550 .0 as f32;
551
552 if (scroll_top..scroll_bottom).contains(&prompt_row) {
553 editor_assists.scroll_lock = Some(InlineAssistScrollLock {
554 assist_id,
555 distance_from_top: prompt_row - scroll_top,
556 });
557 } else {
558 editor_assists.scroll_lock = None;
559 }
560 })
561 .ok();
562 }
563
564 fn handle_prompt_editor_focus_out(&mut self, assist_id: InlineAssistId, cx: &mut App) {
565 let assist = &self.assists[&assist_id];
566 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
567 if assist_group.active_assist_id == Some(assist_id) {
568 assist_group.active_assist_id = None;
569 if assist_group.linked {
570 for assist_id in &assist_group.assist_ids {
571 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
572 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
573 prompt_editor.set_show_cursor_when_unfocused(false, cx)
574 });
575 }
576 }
577 }
578 }
579 }
580
581 fn handle_prompt_editor_event(
582 &mut self,
583 prompt_editor: Entity<PromptEditor>,
584 event: &PromptEditorEvent,
585 window: &mut Window,
586 cx: &mut App,
587 ) {
588 let assist_id = prompt_editor.read(cx).id;
589 match event {
590 PromptEditorEvent::StartRequested => {
591 self.start_assist(assist_id, window, cx);
592 }
593 PromptEditorEvent::StopRequested => {
594 self.stop_assist(assist_id, cx);
595 }
596 PromptEditorEvent::ConfirmRequested => {
597 self.finish_assist(assist_id, false, window, cx);
598 }
599 PromptEditorEvent::CancelRequested => {
600 self.finish_assist(assist_id, true, window, cx);
601 }
602 PromptEditorEvent::DismissRequested => {
603 self.dismiss_assist(assist_id, window, cx);
604 }
605 }
606 }
607
608 fn handle_editor_newline(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
609 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
610 return;
611 };
612
613 if editor.read(cx).selections.count() == 1 {
614 let (selection, buffer) = editor.update(cx, |editor, cx| {
615 (
616 editor.selections.newest::<usize>(cx),
617 editor.buffer().read(cx).snapshot(cx),
618 )
619 });
620 for assist_id in &editor_assists.assist_ids {
621 let assist = &self.assists[assist_id];
622 let assist_range = assist.range.to_offset(&buffer);
623 if assist_range.contains(&selection.start) && assist_range.contains(&selection.end)
624 {
625 if matches!(assist.codegen.read(cx).status(cx), CodegenStatus::Pending) {
626 self.dismiss_assist(*assist_id, window, cx);
627 } else {
628 self.finish_assist(*assist_id, false, window, cx);
629 }
630
631 return;
632 }
633 }
634 }
635
636 cx.propagate();
637 }
638
639 fn handle_editor_cancel(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
640 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
641 return;
642 };
643
644 if editor.read(cx).selections.count() == 1 {
645 let (selection, buffer) = editor.update(cx, |editor, cx| {
646 (
647 editor.selections.newest::<usize>(cx),
648 editor.buffer().read(cx).snapshot(cx),
649 )
650 });
651 let mut closest_assist_fallback = None;
652 for assist_id in &editor_assists.assist_ids {
653 let assist = &self.assists[assist_id];
654 let assist_range = assist.range.to_offset(&buffer);
655 if assist.decorations.is_some() {
656 if assist_range.contains(&selection.start)
657 && assist_range.contains(&selection.end)
658 {
659 self.focus_assist(*assist_id, window, cx);
660 return;
661 } else {
662 let distance_from_selection = assist_range
663 .start
664 .abs_diff(selection.start)
665 .min(assist_range.start.abs_diff(selection.end))
666 + assist_range
667 .end
668 .abs_diff(selection.start)
669 .min(assist_range.end.abs_diff(selection.end));
670 match closest_assist_fallback {
671 Some((_, old_distance)) => {
672 if distance_from_selection < old_distance {
673 closest_assist_fallback =
674 Some((assist_id, distance_from_selection));
675 }
676 }
677 None => {
678 closest_assist_fallback = Some((assist_id, distance_from_selection))
679 }
680 }
681 }
682 }
683 }
684
685 if let Some((&assist_id, _)) = closest_assist_fallback {
686 self.focus_assist(assist_id, window, cx);
687 }
688 }
689
690 cx.propagate();
691 }
692
693 fn handle_editor_release(
694 &mut self,
695 editor: WeakEntity<Editor>,
696 window: &mut Window,
697 cx: &mut App,
698 ) {
699 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor) {
700 for assist_id in editor_assists.assist_ids.clone() {
701 self.finish_assist(assist_id, true, window, cx);
702 }
703 }
704 }
705
706 fn handle_editor_change(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
707 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
708 return;
709 };
710 let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() else {
711 return;
712 };
713 let assist = &self.assists[&scroll_lock.assist_id];
714 let Some(decorations) = assist.decorations.as_ref() else {
715 return;
716 };
717
718 editor.update(cx, |editor, cx| {
719 let scroll_position = editor.scroll_position(cx);
720 let target_scroll_top = editor
721 .row_for_block(decorations.prompt_block_id, cx)
722 .unwrap()
723 .0 as f32
724 - scroll_lock.distance_from_top;
725 if target_scroll_top != scroll_position.y {
726 editor.set_scroll_position(point(scroll_position.x, target_scroll_top), window, cx);
727 }
728 });
729 }
730
731 fn handle_editor_event(
732 &mut self,
733 editor: Entity<Editor>,
734 event: &EditorEvent,
735 window: &mut Window,
736 cx: &mut App,
737 ) {
738 let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) else {
739 return;
740 };
741
742 match event {
743 EditorEvent::Edited { transaction_id } => {
744 let buffer = editor.read(cx).buffer().read(cx);
745 let edited_ranges =
746 buffer.edited_ranges_for_transaction::<usize>(*transaction_id, cx);
747 let snapshot = buffer.snapshot(cx);
748
749 for assist_id in editor_assists.assist_ids.clone() {
750 let assist = &self.assists[&assist_id];
751 if matches!(
752 assist.codegen.read(cx).status(cx),
753 CodegenStatus::Error(_) | CodegenStatus::Done
754 ) {
755 let assist_range = assist.range.to_offset(&snapshot);
756 if edited_ranges
757 .iter()
758 .any(|range| range.overlaps(&assist_range))
759 {
760 self.finish_assist(assist_id, false, window, cx);
761 }
762 }
763 }
764 }
765 EditorEvent::ScrollPositionChanged { .. } => {
766 if let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() {
767 let assist = &self.assists[&scroll_lock.assist_id];
768 if let Some(decorations) = assist.decorations.as_ref() {
769 let distance_from_top = editor.update(cx, |editor, cx| {
770 let scroll_top = editor.scroll_position(cx).y;
771 let prompt_row = editor
772 .row_for_block(decorations.prompt_block_id, cx)
773 .unwrap()
774 .0 as f32;
775 prompt_row - scroll_top
776 });
777
778 if distance_from_top != scroll_lock.distance_from_top {
779 editor_assists.scroll_lock = None;
780 }
781 }
782 }
783 }
784 EditorEvent::SelectionsChanged { .. } => {
785 for assist_id in editor_assists.assist_ids.clone() {
786 let assist = &self.assists[&assist_id];
787 if let Some(decorations) = assist.decorations.as_ref() {
788 if decorations
789 .prompt_editor
790 .focus_handle(cx)
791 .is_focused(window)
792 {
793 return;
794 }
795 }
796 }
797
798 editor_assists.scroll_lock = None;
799 }
800 _ => {}
801 }
802 }
803
804 pub fn finish_assist(
805 &mut self,
806 assist_id: InlineAssistId,
807 undo: bool,
808 window: &mut Window,
809 cx: &mut App,
810 ) {
811 if let Some(assist) = self.assists.get(&assist_id) {
812 let assist_group_id = assist.group_id;
813 if self.assist_groups[&assist_group_id].linked {
814 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
815 self.finish_assist(assist_id, undo, window, cx);
816 }
817 return;
818 }
819 }
820
821 self.dismiss_assist(assist_id, window, cx);
822
823 if let Some(assist) = self.assists.remove(&assist_id) {
824 if let hash_map::Entry::Occupied(mut entry) = self.assist_groups.entry(assist.group_id)
825 {
826 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
827 if entry.get().assist_ids.is_empty() {
828 entry.remove();
829 }
830 }
831
832 if let hash_map::Entry::Occupied(mut entry) =
833 self.assists_by_editor.entry(assist.editor.clone())
834 {
835 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
836 if entry.get().assist_ids.is_empty() {
837 entry.remove();
838 if let Some(editor) = assist.editor.upgrade() {
839 self.update_editor_highlights(&editor, cx);
840 }
841 } else {
842 entry.get().highlight_updates.send(()).ok();
843 }
844 }
845
846 let active_alternative = assist.codegen.read(cx).active_alternative().clone();
847 let message_id = active_alternative.read(cx).message_id.clone();
848
849 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
850 let language_name = assist.editor.upgrade().and_then(|editor| {
851 let multibuffer = editor.read(cx).buffer().read(cx);
852 let multibuffer_snapshot = multibuffer.snapshot(cx);
853 let ranges = multibuffer_snapshot.range_to_buffer_ranges(assist.range.clone());
854 ranges
855 .first()
856 .and_then(|(buffer, _, _)| buffer.language())
857 .map(|language| language.name())
858 });
859 report_assistant_event(
860 AssistantEvent {
861 conversation_id: None,
862 kind: AssistantKind::Inline,
863 message_id,
864 phase: if undo {
865 AssistantPhase::Rejected
866 } else {
867 AssistantPhase::Accepted
868 },
869 model: model.telemetry_id(),
870 model_provider: model.provider_id().to_string(),
871 response_latency: None,
872 error_message: None,
873 language_name: language_name.map(|name| name.to_proto()),
874 },
875 Some(self.telemetry.clone()),
876 cx.http_client(),
877 model.api_key(cx),
878 cx.background_executor(),
879 );
880 }
881
882 if undo {
883 assist.codegen.update(cx, |codegen, cx| codegen.undo(cx));
884 } else {
885 self.confirmed_assists.insert(assist_id, active_alternative);
886 }
887 }
888 }
889
890 fn dismiss_assist(
891 &mut self,
892 assist_id: InlineAssistId,
893 window: &mut Window,
894 cx: &mut App,
895 ) -> bool {
896 let Some(assist) = self.assists.get_mut(&assist_id) else {
897 return false;
898 };
899 let Some(editor) = assist.editor.upgrade() else {
900 return false;
901 };
902 let Some(decorations) = assist.decorations.take() else {
903 return false;
904 };
905
906 editor.update(cx, |editor, cx| {
907 let mut to_remove = decorations.removed_line_block_ids;
908 to_remove.insert(decorations.prompt_block_id);
909 to_remove.insert(decorations.end_block_id);
910 editor.remove_blocks(to_remove, None, cx);
911 });
912
913 if decorations
914 .prompt_editor
915 .focus_handle(cx)
916 .contains_focused(window, cx)
917 {
918 self.focus_next_assist(assist_id, window, cx);
919 }
920
921 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) {
922 if editor_assists
923 .scroll_lock
924 .as_ref()
925 .map_or(false, |lock| lock.assist_id == assist_id)
926 {
927 editor_assists.scroll_lock = None;
928 }
929 editor_assists.highlight_updates.send(()).ok();
930 }
931
932 true
933 }
934
935 fn focus_next_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
936 let Some(assist) = self.assists.get(&assist_id) else {
937 return;
938 };
939
940 let assist_group = &self.assist_groups[&assist.group_id];
941 let assist_ix = assist_group
942 .assist_ids
943 .iter()
944 .position(|id| *id == assist_id)
945 .unwrap();
946 let assist_ids = assist_group
947 .assist_ids
948 .iter()
949 .skip(assist_ix + 1)
950 .chain(assist_group.assist_ids.iter().take(assist_ix));
951
952 for assist_id in assist_ids {
953 let assist = &self.assists[assist_id];
954 if assist.decorations.is_some() {
955 self.focus_assist(*assist_id, window, cx);
956 return;
957 }
958 }
959
960 assist
961 .editor
962 .update(cx, |editor, cx| window.focus(&editor.focus_handle(cx)))
963 .ok();
964 }
965
966 fn focus_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
967 let Some(assist) = self.assists.get(&assist_id) else {
968 return;
969 };
970
971 if let Some(decorations) = assist.decorations.as_ref() {
972 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
973 prompt_editor.editor.update(cx, |editor, cx| {
974 window.focus(&editor.focus_handle(cx));
975 editor.select_all(&SelectAll, window, cx);
976 })
977 });
978 }
979
980 self.scroll_to_assist(assist_id, window, cx);
981 }
982
983 pub fn scroll_to_assist(
984 &mut self,
985 assist_id: InlineAssistId,
986 window: &mut Window,
987 cx: &mut App,
988 ) {
989 let Some(assist) = self.assists.get(&assist_id) else {
990 return;
991 };
992 let Some(editor) = assist.editor.upgrade() else {
993 return;
994 };
995
996 let position = assist.range.start;
997 editor.update(cx, |editor, cx| {
998 editor.change_selections(None, window, cx, |selections| {
999 selections.select_anchor_ranges([position..position])
1000 });
1001
1002 let mut scroll_target_top;
1003 let mut scroll_target_bottom;
1004 if let Some(decorations) = assist.decorations.as_ref() {
1005 scroll_target_top = editor
1006 .row_for_block(decorations.prompt_block_id, cx)
1007 .unwrap()
1008 .0 as f32;
1009 scroll_target_bottom = editor
1010 .row_for_block(decorations.end_block_id, cx)
1011 .unwrap()
1012 .0 as f32;
1013 } else {
1014 let snapshot = editor.snapshot(window, cx);
1015 let start_row = assist
1016 .range
1017 .start
1018 .to_display_point(&snapshot.display_snapshot)
1019 .row();
1020 scroll_target_top = start_row.0 as f32;
1021 scroll_target_bottom = scroll_target_top + 1.;
1022 }
1023 scroll_target_top -= editor.vertical_scroll_margin() as f32;
1024 scroll_target_bottom += editor.vertical_scroll_margin() as f32;
1025
1026 let height_in_lines = editor.visible_line_count().unwrap_or(0.);
1027 let scroll_top = editor.scroll_position(cx).y;
1028 let scroll_bottom = scroll_top + height_in_lines;
1029
1030 if scroll_target_top < scroll_top {
1031 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1032 } else if scroll_target_bottom > scroll_bottom {
1033 if (scroll_target_bottom - scroll_target_top) <= height_in_lines {
1034 editor.set_scroll_position(
1035 point(0., scroll_target_bottom - height_in_lines),
1036 window,
1037 cx,
1038 );
1039 } else {
1040 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1041 }
1042 }
1043 });
1044 }
1045
1046 fn unlink_assist_group(
1047 &mut self,
1048 assist_group_id: InlineAssistGroupId,
1049 window: &mut Window,
1050 cx: &mut App,
1051 ) -> Vec<InlineAssistId> {
1052 let assist_group = self.assist_groups.get_mut(&assist_group_id).unwrap();
1053 assist_group.linked = false;
1054 for assist_id in &assist_group.assist_ids {
1055 let assist = self.assists.get_mut(assist_id).unwrap();
1056 if let Some(editor_decorations) = assist.decorations.as_ref() {
1057 editor_decorations
1058 .prompt_editor
1059 .update(cx, |prompt_editor, cx| prompt_editor.unlink(window, cx));
1060 }
1061 }
1062 assist_group.assist_ids.clone()
1063 }
1064
1065 pub fn start_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
1066 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1067 assist
1068 } else {
1069 return;
1070 };
1071
1072 let assist_group_id = assist.group_id;
1073 if self.assist_groups[&assist_group_id].linked {
1074 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
1075 self.start_assist(assist_id, window, cx);
1076 }
1077 return;
1078 }
1079
1080 let Some(user_prompt) = assist.user_prompt(cx) else {
1081 return;
1082 };
1083
1084 self.prompt_history.retain(|prompt| *prompt != user_prompt);
1085 self.prompt_history.push_back(user_prompt.clone());
1086 if self.prompt_history.len() > PROMPT_HISTORY_MAX_LEN {
1087 self.prompt_history.pop_front();
1088 }
1089
1090 let assistant_panel_context = assist.assistant_panel_context(cx);
1091
1092 assist
1093 .codegen
1094 .update(cx, |codegen, cx| {
1095 codegen.start(user_prompt, assistant_panel_context, cx)
1096 })
1097 .log_err();
1098 }
1099
1100 pub fn stop_assist(&mut self, assist_id: InlineAssistId, cx: &mut App) {
1101 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1102 assist
1103 } else {
1104 return;
1105 };
1106
1107 assist.codegen.update(cx, |codegen, cx| codegen.stop(cx));
1108 }
1109
1110 fn update_editor_highlights(&self, editor: &Entity<Editor>, cx: &mut App) {
1111 let mut gutter_pending_ranges = Vec::new();
1112 let mut gutter_transformed_ranges = Vec::new();
1113 let mut foreground_ranges = Vec::new();
1114 let mut inserted_row_ranges = Vec::new();
1115 let empty_assist_ids = Vec::new();
1116 let assist_ids = self
1117 .assists_by_editor
1118 .get(&editor.downgrade())
1119 .map_or(&empty_assist_ids, |editor_assists| {
1120 &editor_assists.assist_ids
1121 });
1122
1123 for assist_id in assist_ids {
1124 if let Some(assist) = self.assists.get(assist_id) {
1125 let codegen = assist.codegen.read(cx);
1126 let buffer = codegen.buffer(cx).read(cx).read(cx);
1127 foreground_ranges.extend(codegen.last_equal_ranges(cx).iter().cloned());
1128
1129 let pending_range =
1130 codegen.edit_position(cx).unwrap_or(assist.range.start)..assist.range.end;
1131 if pending_range.end.to_offset(&buffer) > pending_range.start.to_offset(&buffer) {
1132 gutter_pending_ranges.push(pending_range);
1133 }
1134
1135 if let Some(edit_position) = codegen.edit_position(cx) {
1136 let edited_range = assist.range.start..edit_position;
1137 if edited_range.end.to_offset(&buffer) > edited_range.start.to_offset(&buffer) {
1138 gutter_transformed_ranges.push(edited_range);
1139 }
1140 }
1141
1142 if assist.decorations.is_some() {
1143 inserted_row_ranges
1144 .extend(codegen.diff(cx).inserted_row_ranges.iter().cloned());
1145 }
1146 }
1147 }
1148
1149 let snapshot = editor.read(cx).buffer().read(cx).snapshot(cx);
1150 merge_ranges(&mut foreground_ranges, &snapshot);
1151 merge_ranges(&mut gutter_pending_ranges, &snapshot);
1152 merge_ranges(&mut gutter_transformed_ranges, &snapshot);
1153 editor.update(cx, |editor, cx| {
1154 enum GutterPendingRange {}
1155 if gutter_pending_ranges.is_empty() {
1156 editor.clear_gutter_highlights::<GutterPendingRange>(cx);
1157 } else {
1158 editor.highlight_gutter::<GutterPendingRange>(
1159 &gutter_pending_ranges,
1160 |cx| cx.theme().status().info_background,
1161 cx,
1162 )
1163 }
1164
1165 enum GutterTransformedRange {}
1166 if gutter_transformed_ranges.is_empty() {
1167 editor.clear_gutter_highlights::<GutterTransformedRange>(cx);
1168 } else {
1169 editor.highlight_gutter::<GutterTransformedRange>(
1170 &gutter_transformed_ranges,
1171 |cx| cx.theme().status().info,
1172 cx,
1173 )
1174 }
1175
1176 if foreground_ranges.is_empty() {
1177 editor.clear_highlights::<InlineAssist>(cx);
1178 } else {
1179 editor.highlight_text::<InlineAssist>(
1180 foreground_ranges,
1181 HighlightStyle {
1182 fade_out: Some(0.6),
1183 ..Default::default()
1184 },
1185 cx,
1186 );
1187 }
1188
1189 editor.clear_row_highlights::<InlineAssist>();
1190 for row_range in inserted_row_ranges {
1191 editor.highlight_rows::<InlineAssist>(
1192 row_range,
1193 cx.theme().status().info_background,
1194 false,
1195 cx,
1196 );
1197 }
1198 });
1199 }
1200
1201 fn update_editor_blocks(
1202 &mut self,
1203 editor: &Entity<Editor>,
1204 assist_id: InlineAssistId,
1205 window: &mut Window,
1206 cx: &mut App,
1207 ) {
1208 let Some(assist) = self.assists.get_mut(&assist_id) else {
1209 return;
1210 };
1211 let Some(decorations) = assist.decorations.as_mut() else {
1212 return;
1213 };
1214
1215 let codegen = assist.codegen.read(cx);
1216 let old_snapshot = codegen.snapshot(cx);
1217 let old_buffer = codegen.old_buffer(cx);
1218 let deleted_row_ranges = codegen.diff(cx).deleted_row_ranges.clone();
1219
1220 editor.update(cx, |editor, cx| {
1221 let old_blocks = mem::take(&mut decorations.removed_line_block_ids);
1222 editor.remove_blocks(old_blocks, None, cx);
1223
1224 let mut new_blocks = Vec::new();
1225 for (new_row, old_row_range) in deleted_row_ranges {
1226 let (_, buffer_start) = old_snapshot
1227 .point_to_buffer_offset(Point::new(*old_row_range.start(), 0))
1228 .unwrap();
1229 let (_, buffer_end) = old_snapshot
1230 .point_to_buffer_offset(Point::new(
1231 *old_row_range.end(),
1232 old_snapshot.line_len(MultiBufferRow(*old_row_range.end())),
1233 ))
1234 .unwrap();
1235
1236 let deleted_lines_editor = cx.new(|cx| {
1237 let multi_buffer =
1238 cx.new(|_| MultiBuffer::without_headers(language::Capability::ReadOnly));
1239 multi_buffer.update(cx, |multi_buffer, cx| {
1240 multi_buffer.push_excerpts(
1241 old_buffer.clone(),
1242 Some(ExcerptRange {
1243 context: buffer_start..buffer_end,
1244 primary: None,
1245 }),
1246 cx,
1247 );
1248 });
1249
1250 enum DeletedLines {}
1251 let mut editor = Editor::for_multibuffer(multi_buffer, None, true, window, cx);
1252 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::None, cx);
1253 editor.set_show_wrap_guides(false, cx);
1254 editor.set_show_gutter(false, cx);
1255 editor.scroll_manager.set_forbid_vertical_scroll(true);
1256 editor.set_show_scrollbars(false, cx);
1257 editor.set_read_only(true);
1258 editor.set_show_inline_completions(Some(false), window, cx);
1259 editor.highlight_rows::<DeletedLines>(
1260 Anchor::min()..Anchor::max(),
1261 cx.theme().status().deleted_background,
1262 false,
1263 cx,
1264 );
1265 editor
1266 });
1267
1268 let height =
1269 deleted_lines_editor.update(cx, |editor, cx| editor.max_point(cx).row().0 + 1);
1270 new_blocks.push(BlockProperties {
1271 placement: BlockPlacement::Above(new_row),
1272 height,
1273 style: BlockStyle::Flex,
1274 render: Arc::new(move |cx| {
1275 div()
1276 .block_mouse_down()
1277 .bg(cx.theme().status().deleted_background)
1278 .size_full()
1279 .h(height as f32 * cx.window.line_height())
1280 .pl(cx.gutter_dimensions.full_width())
1281 .child(deleted_lines_editor.clone())
1282 .into_any_element()
1283 }),
1284 priority: 0,
1285 });
1286 }
1287
1288 decorations.removed_line_block_ids = editor
1289 .insert_blocks(new_blocks, None, cx)
1290 .into_iter()
1291 .collect();
1292 })
1293 }
1294}
1295
1296struct EditorInlineAssists {
1297 assist_ids: Vec<InlineAssistId>,
1298 scroll_lock: Option<InlineAssistScrollLock>,
1299 highlight_updates: async_watch::Sender<()>,
1300 _update_highlights: Task<Result<()>>,
1301 _subscriptions: Vec<gpui::Subscription>,
1302}
1303
1304struct InlineAssistScrollLock {
1305 assist_id: InlineAssistId,
1306 distance_from_top: f32,
1307}
1308
1309impl EditorInlineAssists {
1310 fn new(editor: &Entity<Editor>, window: &mut Window, cx: &mut App) -> Self {
1311 let (highlight_updates_tx, mut highlight_updates_rx) = async_watch::channel(());
1312 Self {
1313 assist_ids: Vec::new(),
1314 scroll_lock: None,
1315 highlight_updates: highlight_updates_tx,
1316 _update_highlights: cx.spawn(|cx| {
1317 let editor = editor.downgrade();
1318 async move {
1319 while let Ok(()) = highlight_updates_rx.changed().await {
1320 let editor = editor.upgrade().context("editor was dropped")?;
1321 cx.update_global(|assistant: &mut InlineAssistant, cx| {
1322 assistant.update_editor_highlights(&editor, cx);
1323 })?;
1324 }
1325 Ok(())
1326 }
1327 }),
1328 _subscriptions: vec![
1329 cx.observe_release_in(editor, window, {
1330 let editor = editor.downgrade();
1331 |_, window, cx| {
1332 InlineAssistant::update_global(cx, |this, cx| {
1333 this.handle_editor_release(editor, window, cx);
1334 })
1335 }
1336 }),
1337 window.observe(editor, cx, move |editor, window, cx| {
1338 InlineAssistant::update_global(cx, |this, cx| {
1339 this.handle_editor_change(editor, window, cx)
1340 })
1341 }),
1342 window.subscribe(editor, cx, move |editor, event, window, cx| {
1343 InlineAssistant::update_global(cx, |this, cx| {
1344 this.handle_editor_event(editor, event, window, cx)
1345 })
1346 }),
1347 editor.update(cx, |editor, cx| {
1348 let editor_handle = cx.entity().downgrade();
1349 editor.register_action(move |_: &editor::actions::Newline, window, cx| {
1350 InlineAssistant::update_global(cx, |this, cx| {
1351 if let Some(editor) = editor_handle.upgrade() {
1352 this.handle_editor_newline(editor, window, cx)
1353 }
1354 })
1355 })
1356 }),
1357 editor.update(cx, |editor, cx| {
1358 let editor_handle = cx.entity().downgrade();
1359 editor.register_action(move |_: &editor::actions::Cancel, window, cx| {
1360 InlineAssistant::update_global(cx, |this, cx| {
1361 if let Some(editor) = editor_handle.upgrade() {
1362 this.handle_editor_cancel(editor, window, cx)
1363 }
1364 })
1365 })
1366 }),
1367 ],
1368 }
1369 }
1370}
1371
1372struct InlineAssistGroup {
1373 assist_ids: Vec<InlineAssistId>,
1374 linked: bool,
1375 active_assist_id: Option<InlineAssistId>,
1376}
1377
1378impl InlineAssistGroup {
1379 fn new() -> Self {
1380 Self {
1381 assist_ids: Vec::new(),
1382 linked: true,
1383 active_assist_id: None,
1384 }
1385 }
1386}
1387
1388fn build_assist_editor_renderer(editor: &Entity<PromptEditor>) -> RenderBlock {
1389 let editor = editor.clone();
1390 Arc::new(move |cx: &mut BlockContext| {
1391 *editor.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
1392 editor.clone().into_any_element()
1393 })
1394}
1395
1396#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1397pub struct InlineAssistId(usize);
1398
1399impl InlineAssistId {
1400 fn post_inc(&mut self) -> InlineAssistId {
1401 let id = *self;
1402 self.0 += 1;
1403 id
1404 }
1405}
1406
1407#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1408struct InlineAssistGroupId(usize);
1409
1410impl InlineAssistGroupId {
1411 fn post_inc(&mut self) -> InlineAssistGroupId {
1412 let id = *self;
1413 self.0 += 1;
1414 id
1415 }
1416}
1417
1418enum PromptEditorEvent {
1419 StartRequested,
1420 StopRequested,
1421 ConfirmRequested,
1422 CancelRequested,
1423 DismissRequested,
1424}
1425
1426struct PromptEditor {
1427 id: InlineAssistId,
1428 editor: Entity<Editor>,
1429 language_model_selector: Entity<LanguageModelSelector>,
1430 edited_since_done: bool,
1431 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1432 prompt_history: VecDeque<String>,
1433 prompt_history_ix: Option<usize>,
1434 pending_prompt: String,
1435 codegen: Entity<Codegen>,
1436 _codegen_subscription: Subscription,
1437 editor_subscriptions: Vec<Subscription>,
1438 pending_token_count: Task<Result<()>>,
1439 token_counts: Option<TokenCounts>,
1440 _token_count_subscriptions: Vec<Subscription>,
1441 workspace: Option<WeakEntity<Workspace>>,
1442 show_rate_limit_notice: bool,
1443}
1444
1445#[derive(Copy, Clone)]
1446pub struct TokenCounts {
1447 total: usize,
1448 assistant_panel: usize,
1449}
1450
1451impl EventEmitter<PromptEditorEvent> for PromptEditor {}
1452
1453impl Render for PromptEditor {
1454 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1455 let gutter_dimensions = *self.gutter_dimensions.lock();
1456 let codegen = self.codegen.read(cx);
1457
1458 let mut buttons = Vec::new();
1459 if codegen.alternative_count(cx) > 1 {
1460 buttons.push(self.render_cycle_controls(cx));
1461 }
1462
1463 let status = codegen.status(cx);
1464 buttons.extend(match status {
1465 CodegenStatus::Idle => {
1466 vec![
1467 IconButton::new("cancel", IconName::Close)
1468 .icon_color(Color::Muted)
1469 .shape(IconButtonShape::Square)
1470 .tooltip(|window, cx| {
1471 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1472 })
1473 .on_click(
1474 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1475 )
1476 .into_any_element(),
1477 IconButton::new("start", IconName::SparkleAlt)
1478 .icon_color(Color::Muted)
1479 .shape(IconButtonShape::Square)
1480 .tooltip(|window, cx| {
1481 Tooltip::for_action("Transform", &menu::Confirm, window, cx)
1482 })
1483 .on_click(
1484 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StartRequested)),
1485 )
1486 .into_any_element(),
1487 ]
1488 }
1489 CodegenStatus::Pending => {
1490 vec![
1491 IconButton::new("cancel", IconName::Close)
1492 .icon_color(Color::Muted)
1493 .shape(IconButtonShape::Square)
1494 .tooltip(Tooltip::text("Cancel Assist"))
1495 .on_click(
1496 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1497 )
1498 .into_any_element(),
1499 IconButton::new("stop", IconName::Stop)
1500 .icon_color(Color::Error)
1501 .shape(IconButtonShape::Square)
1502 .tooltip(|window, cx| {
1503 Tooltip::with_meta(
1504 "Interrupt Transformation",
1505 Some(&menu::Cancel),
1506 "Changes won't be discarded",
1507 window,
1508 cx,
1509 )
1510 })
1511 .on_click(
1512 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StopRequested)),
1513 )
1514 .into_any_element(),
1515 ]
1516 }
1517 CodegenStatus::Error(_) | CodegenStatus::Done => {
1518 let must_rerun =
1519 self.edited_since_done || matches!(status, CodegenStatus::Error(_));
1520 // when accept button isn't visible, then restart maps to confirm
1521 // when accept button is visible, then restart must be mapped to an alternate keyboard shortcut
1522 let restart_key: &dyn gpui::Action = if must_rerun {
1523 &menu::Confirm
1524 } else {
1525 &menu::Restart
1526 };
1527 vec![
1528 IconButton::new("cancel", IconName::Close)
1529 .icon_color(Color::Muted)
1530 .shape(IconButtonShape::Square)
1531 .tooltip(|window, cx| {
1532 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1533 })
1534 .on_click(
1535 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1536 )
1537 .into_any_element(),
1538 IconButton::new("restart", IconName::RotateCw)
1539 .icon_color(Color::Muted)
1540 .shape(IconButtonShape::Square)
1541 .tooltip(|window, cx| {
1542 Tooltip::with_meta(
1543 "Regenerate Transformation",
1544 Some(restart_key),
1545 "Current change will be discarded",
1546 window,
1547 cx,
1548 )
1549 })
1550 .on_click(cx.listener(|_, _, _, cx| {
1551 cx.emit(PromptEditorEvent::StartRequested);
1552 }))
1553 .into_any_element(),
1554 if !must_rerun {
1555 IconButton::new("confirm", IconName::Check)
1556 .icon_color(Color::Info)
1557 .shape(IconButtonShape::Square)
1558 .tooltip(|window, cx| {
1559 Tooltip::for_action("Confirm Assist", &menu::Confirm, window, cx)
1560 })
1561 .on_click(cx.listener(|_, _, _, cx| {
1562 cx.emit(PromptEditorEvent::ConfirmRequested);
1563 }))
1564 .into_any_element()
1565 } else {
1566 div().into_any_element()
1567 },
1568 ]
1569 }
1570 });
1571
1572 h_flex()
1573 .key_context("PromptEditor")
1574 .bg(cx.theme().colors().editor_background)
1575 .block_mouse_down()
1576 .cursor(CursorStyle::Arrow)
1577 .border_y_1()
1578 .border_color(cx.theme().status().info_border)
1579 .size_full()
1580 .py(window.line_height() / 2.5)
1581 .on_action(cx.listener(Self::confirm))
1582 .on_action(cx.listener(Self::cancel))
1583 .on_action(cx.listener(Self::restart))
1584 .on_action(cx.listener(Self::move_up))
1585 .on_action(cx.listener(Self::move_down))
1586 .capture_action(cx.listener(Self::cycle_prev))
1587 .capture_action(cx.listener(Self::cycle_next))
1588 .child(
1589 h_flex()
1590 .w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0))
1591 .justify_center()
1592 .gap_2()
1593 .child(LanguageModelSelectorPopoverMenu::new(
1594 self.language_model_selector.clone(),
1595 IconButton::new("context", IconName::SettingsAlt)
1596 .shape(IconButtonShape::Square)
1597 .icon_size(IconSize::Small)
1598 .icon_color(Color::Muted)
1599 .tooltip(move |window, cx| {
1600 Tooltip::with_meta(
1601 format!(
1602 "Using {}",
1603 LanguageModelRegistry::read_global(cx)
1604 .active_model()
1605 .map(|model| model.name().0)
1606 .unwrap_or_else(|| "No model selected".into()),
1607 ),
1608 None,
1609 "Change Model",
1610 window,
1611 cx,
1612 )
1613 }),
1614 ))
1615 .map(|el| {
1616 let CodegenStatus::Error(error) = self.codegen.read(cx).status(cx) else {
1617 return el;
1618 };
1619
1620 let error_message = SharedString::from(error.to_string());
1621 if error.error_code() == proto::ErrorCode::RateLimitExceeded
1622 && cx.has_flag::<ZedPro>()
1623 {
1624 el.child(
1625 v_flex()
1626 .child(
1627 IconButton::new("rate-limit-error", IconName::XCircle)
1628 .toggle_state(self.show_rate_limit_notice)
1629 .shape(IconButtonShape::Square)
1630 .icon_size(IconSize::Small)
1631 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
1632 )
1633 .children(self.show_rate_limit_notice.then(|| {
1634 deferred(
1635 anchored()
1636 .position_mode(gpui::AnchoredPositionMode::Local)
1637 .position(point(px(0.), px(24.)))
1638 .anchor(gpui::Corner::TopLeft)
1639 .child(self.render_rate_limit_notice(cx)),
1640 )
1641 })),
1642 )
1643 } else {
1644 el.child(
1645 div()
1646 .id("error")
1647 .tooltip(Tooltip::text(error_message))
1648 .child(
1649 Icon::new(IconName::XCircle)
1650 .size(IconSize::Small)
1651 .color(Color::Error),
1652 ),
1653 )
1654 }
1655 }),
1656 )
1657 .child(div().flex_1().child(self.render_prompt_editor(cx)))
1658 .child(
1659 h_flex()
1660 .gap_2()
1661 .pr_6()
1662 .children(self.render_token_count(cx))
1663 .children(buttons),
1664 )
1665 }
1666}
1667
1668impl Focusable for PromptEditor {
1669 fn focus_handle(&self, cx: &App) -> FocusHandle {
1670 self.editor.focus_handle(cx)
1671 }
1672}
1673
1674impl PromptEditor {
1675 const MAX_LINES: u8 = 8;
1676
1677 #[allow(clippy::too_many_arguments)]
1678 fn new(
1679 id: InlineAssistId,
1680 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1681 prompt_history: VecDeque<String>,
1682 prompt_buffer: Entity<MultiBuffer>,
1683 codegen: Entity<Codegen>,
1684 parent_editor: &Entity<Editor>,
1685 assistant_panel: Option<&Entity<AssistantPanel>>,
1686 workspace: Option<WeakEntity<Workspace>>,
1687 fs: Arc<dyn Fs>,
1688 window: &mut Window,
1689 cx: &mut Context<Self>,
1690 ) -> Self {
1691 let prompt_editor = cx.new(|cx| {
1692 let mut editor = Editor::new(
1693 EditorMode::AutoHeight {
1694 max_lines: Self::MAX_LINES as usize,
1695 },
1696 prompt_buffer,
1697 None,
1698 false,
1699 window,
1700 cx,
1701 );
1702 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1703 // Since the prompt editors for all inline assistants are linked,
1704 // always show the cursor (even when it isn't focused) because
1705 // typing in one will make what you typed appear in all of them.
1706 editor.set_show_cursor_when_unfocused(true, cx);
1707 editor.set_placeholder_text(Self::placeholder_text(codegen.read(cx), window), cx);
1708 editor
1709 });
1710
1711 let mut token_count_subscriptions = Vec::new();
1712 token_count_subscriptions.push(cx.subscribe_in(
1713 parent_editor,
1714 window,
1715 Self::handle_parent_editor_event,
1716 ));
1717 if let Some(assistant_panel) = assistant_panel {
1718 token_count_subscriptions.push(cx.subscribe_in(
1719 assistant_panel,
1720 window,
1721 Self::handle_assistant_panel_event,
1722 ));
1723 }
1724
1725 let mut this = Self {
1726 id,
1727 editor: prompt_editor,
1728 language_model_selector: cx.new(|cx| {
1729 let fs = fs.clone();
1730 LanguageModelSelector::new(
1731 move |model, cx| {
1732 update_settings_file::<AssistantSettings>(
1733 fs.clone(),
1734 cx,
1735 move |settings, _| settings.set_model(model.clone()),
1736 );
1737 },
1738 window,
1739 cx,
1740 )
1741 }),
1742 edited_since_done: false,
1743 gutter_dimensions,
1744 prompt_history,
1745 prompt_history_ix: None,
1746 pending_prompt: String::new(),
1747 _codegen_subscription: cx.observe(&codegen, Self::handle_codegen_changed),
1748 editor_subscriptions: Vec::new(),
1749 codegen,
1750 pending_token_count: Task::ready(Ok(())),
1751 token_counts: None,
1752 _token_count_subscriptions: token_count_subscriptions,
1753 workspace,
1754 show_rate_limit_notice: false,
1755 };
1756 this.count_tokens(cx);
1757 this.subscribe_to_editor(window, cx);
1758 this
1759 }
1760
1761 fn subscribe_to_editor(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1762 self.editor_subscriptions.clear();
1763 self.editor_subscriptions.push(cx.subscribe_in(
1764 &self.editor,
1765 window,
1766 Self::handle_prompt_editor_events,
1767 ));
1768 }
1769
1770 fn set_show_cursor_when_unfocused(
1771 &mut self,
1772 show_cursor_when_unfocused: bool,
1773 cx: &mut Context<Self>,
1774 ) {
1775 self.editor.update(cx, |editor, cx| {
1776 editor.set_show_cursor_when_unfocused(show_cursor_when_unfocused, cx)
1777 });
1778 }
1779
1780 fn unlink(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1781 let prompt = self.prompt(cx);
1782 let focus = self.editor.focus_handle(cx).contains_focused(window, cx);
1783 self.editor = cx.new(|cx| {
1784 let mut editor = Editor::auto_height(Self::MAX_LINES as usize, window, cx);
1785 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1786 editor.set_placeholder_text(Self::placeholder_text(self.codegen.read(cx), window), cx);
1787 editor.set_placeholder_text("Add a prompt…", cx);
1788 editor.set_text(prompt, window, cx);
1789 if focus {
1790 window.focus(&editor.focus_handle(cx));
1791 }
1792 editor
1793 });
1794 self.subscribe_to_editor(window, cx);
1795 }
1796
1797 fn placeholder_text(codegen: &Codegen, window: &Window) -> String {
1798 let context_keybinding = text_for_action(&zed_actions::assistant::ToggleFocus, window)
1799 .map(|keybinding| format!(" • {keybinding} for context"))
1800 .unwrap_or_default();
1801
1802 let action = if codegen.is_insertion {
1803 "Generate"
1804 } else {
1805 "Transform"
1806 };
1807
1808 format!("{action}…{context_keybinding} • ↓↑ for history")
1809 }
1810
1811 fn prompt(&self, cx: &App) -> String {
1812 self.editor.read(cx).text(cx)
1813 }
1814
1815 fn toggle_rate_limit_notice(
1816 &mut self,
1817 _: &ClickEvent,
1818 window: &mut Window,
1819 cx: &mut Context<Self>,
1820 ) {
1821 self.show_rate_limit_notice = !self.show_rate_limit_notice;
1822 if self.show_rate_limit_notice {
1823 window.focus(&self.editor.focus_handle(cx));
1824 }
1825 cx.notify();
1826 }
1827
1828 fn handle_parent_editor_event(
1829 &mut self,
1830 _: &Entity<Editor>,
1831 event: &EditorEvent,
1832 _: &mut Window,
1833 cx: &mut Context<Self>,
1834 ) {
1835 if let EditorEvent::BufferEdited { .. } = event {
1836 self.count_tokens(cx);
1837 }
1838 }
1839
1840 fn handle_assistant_panel_event(
1841 &mut self,
1842 _: &Entity<AssistantPanel>,
1843 event: &AssistantPanelEvent,
1844 _: &mut Window,
1845 cx: &mut Context<Self>,
1846 ) {
1847 let AssistantPanelEvent::ContextEdited { .. } = event;
1848 self.count_tokens(cx);
1849 }
1850
1851 fn count_tokens(&mut self, cx: &mut Context<Self>) {
1852 let assist_id = self.id;
1853 self.pending_token_count = cx.spawn(|this, mut cx| async move {
1854 cx.background_executor().timer(Duration::from_secs(1)).await;
1855 let token_count = cx
1856 .update_global(|inline_assistant: &mut InlineAssistant, cx| {
1857 let assist = inline_assistant
1858 .assists
1859 .get(&assist_id)
1860 .context("assist not found")?;
1861 anyhow::Ok(assist.count_tokens(cx))
1862 })??
1863 .await?;
1864
1865 this.update(&mut cx, |this, cx| {
1866 this.token_counts = Some(token_count);
1867 cx.notify();
1868 })
1869 })
1870 }
1871
1872 fn handle_prompt_editor_events(
1873 &mut self,
1874 _: &Entity<Editor>,
1875 event: &EditorEvent,
1876 window: &mut Window,
1877 cx: &mut Context<Self>,
1878 ) {
1879 match event {
1880 EditorEvent::Edited { .. } => {
1881 if let Some(workspace) = window.window_handle().downcast::<Workspace>() {
1882 workspace
1883 .update(cx, |workspace, _, cx| {
1884 let is_via_ssh = workspace
1885 .project()
1886 .update(cx, |project, _| project.is_via_ssh());
1887
1888 workspace
1889 .client()
1890 .telemetry()
1891 .log_edit_event("inline assist", is_via_ssh);
1892 })
1893 .log_err();
1894 }
1895 let prompt = self.editor.read(cx).text(cx);
1896 if self
1897 .prompt_history_ix
1898 .map_or(true, |ix| self.prompt_history[ix] != prompt)
1899 {
1900 self.prompt_history_ix.take();
1901 self.pending_prompt = prompt;
1902 }
1903
1904 self.edited_since_done = true;
1905 cx.notify();
1906 }
1907 EditorEvent::BufferEdited => {
1908 self.count_tokens(cx);
1909 }
1910 EditorEvent::Blurred => {
1911 if self.show_rate_limit_notice {
1912 self.show_rate_limit_notice = false;
1913 cx.notify();
1914 }
1915 }
1916 _ => {}
1917 }
1918 }
1919
1920 fn handle_codegen_changed(&mut self, _: Entity<Codegen>, cx: &mut Context<Self>) {
1921 match self.codegen.read(cx).status(cx) {
1922 CodegenStatus::Idle => {
1923 self.editor
1924 .update(cx, |editor, _| editor.set_read_only(false));
1925 }
1926 CodegenStatus::Pending => {
1927 self.editor
1928 .update(cx, |editor, _| editor.set_read_only(true));
1929 }
1930 CodegenStatus::Done => {
1931 self.edited_since_done = false;
1932 self.editor
1933 .update(cx, |editor, _| editor.set_read_only(false));
1934 }
1935 CodegenStatus::Error(error) => {
1936 if cx.has_flag::<ZedPro>()
1937 && error.error_code() == proto::ErrorCode::RateLimitExceeded
1938 && !dismissed_rate_limit_notice()
1939 {
1940 self.show_rate_limit_notice = true;
1941 cx.notify();
1942 }
1943
1944 self.edited_since_done = false;
1945 self.editor
1946 .update(cx, |editor, _| editor.set_read_only(false));
1947 }
1948 }
1949 }
1950
1951 fn restart(&mut self, _: &menu::Restart, _window: &mut Window, cx: &mut Context<Self>) {
1952 cx.emit(PromptEditorEvent::StartRequested);
1953 }
1954
1955 fn cancel(
1956 &mut self,
1957 _: &editor::actions::Cancel,
1958 _window: &mut Window,
1959 cx: &mut Context<Self>,
1960 ) {
1961 match self.codegen.read(cx).status(cx) {
1962 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
1963 cx.emit(PromptEditorEvent::CancelRequested);
1964 }
1965 CodegenStatus::Pending => {
1966 cx.emit(PromptEditorEvent::StopRequested);
1967 }
1968 }
1969 }
1970
1971 fn confirm(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
1972 match self.codegen.read(cx).status(cx) {
1973 CodegenStatus::Idle => {
1974 cx.emit(PromptEditorEvent::StartRequested);
1975 }
1976 CodegenStatus::Pending => {
1977 cx.emit(PromptEditorEvent::DismissRequested);
1978 }
1979 CodegenStatus::Done => {
1980 if self.edited_since_done {
1981 cx.emit(PromptEditorEvent::StartRequested);
1982 } else {
1983 cx.emit(PromptEditorEvent::ConfirmRequested);
1984 }
1985 }
1986 CodegenStatus::Error(_) => {
1987 cx.emit(PromptEditorEvent::StartRequested);
1988 }
1989 }
1990 }
1991
1992 fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1993 if let Some(ix) = self.prompt_history_ix {
1994 if ix > 0 {
1995 self.prompt_history_ix = Some(ix - 1);
1996 let prompt = self.prompt_history[ix - 1].as_str();
1997 self.editor.update(cx, |editor, cx| {
1998 editor.set_text(prompt, window, cx);
1999 editor.move_to_beginning(&Default::default(), window, cx);
2000 });
2001 }
2002 } else if !self.prompt_history.is_empty() {
2003 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
2004 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
2005 self.editor.update(cx, |editor, cx| {
2006 editor.set_text(prompt, window, cx);
2007 editor.move_to_beginning(&Default::default(), window, cx);
2008 });
2009 }
2010 }
2011
2012 fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
2013 if let Some(ix) = self.prompt_history_ix {
2014 if ix < self.prompt_history.len() - 1 {
2015 self.prompt_history_ix = Some(ix + 1);
2016 let prompt = self.prompt_history[ix + 1].as_str();
2017 self.editor.update(cx, |editor, cx| {
2018 editor.set_text(prompt, window, cx);
2019 editor.move_to_end(&Default::default(), window, cx)
2020 });
2021 } else {
2022 self.prompt_history_ix = None;
2023 let prompt = self.pending_prompt.as_str();
2024 self.editor.update(cx, |editor, cx| {
2025 editor.set_text(prompt, window, cx);
2026 editor.move_to_end(&Default::default(), window, cx)
2027 });
2028 }
2029 }
2030 }
2031
2032 fn cycle_prev(
2033 &mut self,
2034 _: &CyclePreviousInlineAssist,
2035 _: &mut Window,
2036 cx: &mut Context<Self>,
2037 ) {
2038 self.codegen
2039 .update(cx, |codegen, cx| codegen.cycle_prev(cx));
2040 }
2041
2042 fn cycle_next(&mut self, _: &CycleNextInlineAssist, _: &mut Window, cx: &mut Context<Self>) {
2043 self.codegen
2044 .update(cx, |codegen, cx| codegen.cycle_next(cx));
2045 }
2046
2047 fn render_cycle_controls(&self, cx: &Context<Self>) -> AnyElement {
2048 let codegen = self.codegen.read(cx);
2049 let disabled = matches!(codegen.status(cx), CodegenStatus::Idle);
2050
2051 let model_registry = LanguageModelRegistry::read_global(cx);
2052 let default_model = model_registry.active_model();
2053 let alternative_models = model_registry.inline_alternative_models();
2054
2055 let get_model_name = |index: usize| -> String {
2056 let name = |model: &Arc<dyn LanguageModel>| model.name().0.to_string();
2057
2058 match index {
2059 0 => default_model.as_ref().map_or_else(String::new, name),
2060 index if index <= alternative_models.len() => alternative_models
2061 .get(index - 1)
2062 .map_or_else(String::new, name),
2063 _ => String::new(),
2064 }
2065 };
2066
2067 let total_models = alternative_models.len() + 1;
2068
2069 if total_models <= 1 {
2070 return div().into_any_element();
2071 }
2072
2073 let current_index = codegen.active_alternative;
2074 let prev_index = (current_index + total_models - 1) % total_models;
2075 let next_index = (current_index + 1) % total_models;
2076
2077 let prev_model_name = get_model_name(prev_index);
2078 let next_model_name = get_model_name(next_index);
2079
2080 h_flex()
2081 .child(
2082 IconButton::new("previous", IconName::ChevronLeft)
2083 .icon_color(Color::Muted)
2084 .disabled(disabled || current_index == 0)
2085 .shape(IconButtonShape::Square)
2086 .tooltip({
2087 let focus_handle = self.editor.focus_handle(cx);
2088 move |window, cx| {
2089 cx.new(|_| {
2090 let mut tooltip = Tooltip::new("Previous Alternative").key_binding(
2091 KeyBinding::for_action_in(
2092 &CyclePreviousInlineAssist,
2093 &focus_handle,
2094 window,
2095 ),
2096 );
2097 if !disabled && current_index != 0 {
2098 tooltip = tooltip.meta(prev_model_name.clone());
2099 }
2100 tooltip
2101 })
2102 .into()
2103 }
2104 })
2105 .on_click(cx.listener(|this, _, _, cx| {
2106 this.codegen
2107 .update(cx, |codegen, cx| codegen.cycle_prev(cx))
2108 })),
2109 )
2110 .child(
2111 Label::new(format!(
2112 "{}/{}",
2113 codegen.active_alternative + 1,
2114 codegen.alternative_count(cx)
2115 ))
2116 .size(LabelSize::Small)
2117 .color(if disabled {
2118 Color::Disabled
2119 } else {
2120 Color::Muted
2121 }),
2122 )
2123 .child(
2124 IconButton::new("next", IconName::ChevronRight)
2125 .icon_color(Color::Muted)
2126 .disabled(disabled || current_index == total_models - 1)
2127 .shape(IconButtonShape::Square)
2128 .tooltip({
2129 let focus_handle = self.editor.focus_handle(cx);
2130 move |window, cx| {
2131 cx.new(|_| {
2132 let mut tooltip = Tooltip::new("Next Alternative").key_binding(
2133 KeyBinding::for_action_in(
2134 &CycleNextInlineAssist,
2135 &focus_handle,
2136 window,
2137 ),
2138 );
2139 if !disabled && current_index != total_models - 1 {
2140 tooltip = tooltip.meta(next_model_name.clone());
2141 }
2142 tooltip
2143 })
2144 .into()
2145 }
2146 })
2147 .on_click(cx.listener(|this, _, _, cx| {
2148 this.codegen
2149 .update(cx, |codegen, cx| codegen.cycle_next(cx))
2150 })),
2151 )
2152 .into_any_element()
2153 }
2154
2155 fn render_token_count(&self, cx: &mut Context<Self>) -> Option<impl IntoElement> {
2156 let model = LanguageModelRegistry::read_global(cx).active_model()?;
2157 let token_counts = self.token_counts?;
2158 let max_token_count = model.max_token_count();
2159
2160 let remaining_tokens = max_token_count as isize - token_counts.total as isize;
2161 let token_count_color = if remaining_tokens <= 0 {
2162 Color::Error
2163 } else if token_counts.total as f32 / max_token_count as f32 >= 0.8 {
2164 Color::Warning
2165 } else {
2166 Color::Muted
2167 };
2168
2169 let mut token_count = h_flex()
2170 .id("token_count")
2171 .gap_0p5()
2172 .child(
2173 Label::new(humanize_token_count(token_counts.total))
2174 .size(LabelSize::Small)
2175 .color(token_count_color),
2176 )
2177 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
2178 .child(
2179 Label::new(humanize_token_count(max_token_count))
2180 .size(LabelSize::Small)
2181 .color(Color::Muted),
2182 );
2183 if let Some(workspace) = self.workspace.clone() {
2184 token_count = token_count
2185 .tooltip(move |window, cx| {
2186 Tooltip::with_meta(
2187 format!(
2188 "Tokens Used ({} from the Assistant Panel)",
2189 humanize_token_count(token_counts.assistant_panel)
2190 ),
2191 None,
2192 "Click to open the Assistant Panel",
2193 window,
2194 cx,
2195 )
2196 })
2197 .cursor_pointer()
2198 .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| cx.stop_propagation())
2199 .on_click(move |_, window, cx| {
2200 cx.stop_propagation();
2201 workspace
2202 .update(cx, |workspace, cx| {
2203 workspace.focus_panel::<AssistantPanel>(window, cx)
2204 })
2205 .ok();
2206 });
2207 } else {
2208 token_count = token_count
2209 .cursor_default()
2210 .tooltip(Tooltip::text("Tokens used"));
2211 }
2212
2213 Some(token_count)
2214 }
2215
2216 fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
2217 let settings = ThemeSettings::get_global(cx);
2218 let text_style = TextStyle {
2219 color: if self.editor.read(cx).read_only(cx) {
2220 cx.theme().colors().text_disabled
2221 } else {
2222 cx.theme().colors().text
2223 },
2224 font_family: settings.buffer_font.family.clone(),
2225 font_fallbacks: settings.buffer_font.fallbacks.clone(),
2226 font_size: settings.buffer_font_size.into(),
2227 font_weight: settings.buffer_font.weight,
2228 line_height: relative(settings.buffer_line_height.value()),
2229 ..Default::default()
2230 };
2231 EditorElement::new(
2232 &self.editor,
2233 EditorStyle {
2234 background: cx.theme().colors().editor_background,
2235 local_player: cx.theme().players().local(),
2236 text: text_style,
2237 ..Default::default()
2238 },
2239 )
2240 }
2241
2242 fn render_rate_limit_notice(&self, cx: &mut Context<Self>) -> impl IntoElement {
2243 Popover::new().child(
2244 v_flex()
2245 .occlude()
2246 .p_2()
2247 .child(
2248 Label::new("Out of Tokens")
2249 .size(LabelSize::Small)
2250 .weight(FontWeight::BOLD),
2251 )
2252 .child(Label::new(
2253 "Try Zed Pro for higher limits, a wider range of models, and more.",
2254 ))
2255 .child(
2256 h_flex()
2257 .justify_between()
2258 .child(CheckboxWithLabel::new(
2259 "dont-show-again",
2260 Label::new("Don't show again"),
2261 if dismissed_rate_limit_notice() {
2262 ui::ToggleState::Selected
2263 } else {
2264 ui::ToggleState::Unselected
2265 },
2266 |selection, _, cx| {
2267 let is_dismissed = match selection {
2268 ui::ToggleState::Unselected => false,
2269 ui::ToggleState::Indeterminate => return,
2270 ui::ToggleState::Selected => true,
2271 };
2272
2273 set_rate_limit_notice_dismissed(is_dismissed, cx)
2274 },
2275 ))
2276 .child(
2277 h_flex()
2278 .gap_2()
2279 .child(
2280 Button::new("dismiss", "Dismiss")
2281 .style(ButtonStyle::Transparent)
2282 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
2283 )
2284 .child(Button::new("more-info", "More Info").on_click(
2285 |_event, window, cx| {
2286 window.dispatch_action(
2287 Box::new(zed_actions::OpenAccountSettings),
2288 cx,
2289 )
2290 },
2291 )),
2292 ),
2293 ),
2294 )
2295 }
2296}
2297
2298const DISMISSED_RATE_LIMIT_NOTICE_KEY: &str = "dismissed-rate-limit-notice";
2299
2300fn dismissed_rate_limit_notice() -> bool {
2301 db::kvp::KEY_VALUE_STORE
2302 .read_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY)
2303 .log_err()
2304 .map_or(false, |s| s.is_some())
2305}
2306
2307fn set_rate_limit_notice_dismissed(is_dismissed: bool, cx: &mut App) {
2308 db::write_and_log(cx, move || async move {
2309 if is_dismissed {
2310 db::kvp::KEY_VALUE_STORE
2311 .write_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into(), "1".into())
2312 .await
2313 } else {
2314 db::kvp::KEY_VALUE_STORE
2315 .delete_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into())
2316 .await
2317 }
2318 })
2319}
2320
2321struct InlineAssist {
2322 group_id: InlineAssistGroupId,
2323 range: Range<Anchor>,
2324 editor: WeakEntity<Editor>,
2325 decorations: Option<InlineAssistDecorations>,
2326 codegen: Entity<Codegen>,
2327 _subscriptions: Vec<Subscription>,
2328 workspace: Option<WeakEntity<Workspace>>,
2329 include_context: bool,
2330}
2331
2332impl InlineAssist {
2333 #[allow(clippy::too_many_arguments)]
2334 fn new(
2335 assist_id: InlineAssistId,
2336 group_id: InlineAssistGroupId,
2337 include_context: bool,
2338 editor: &Entity<Editor>,
2339 prompt_editor: &Entity<PromptEditor>,
2340 prompt_block_id: CustomBlockId,
2341 end_block_id: CustomBlockId,
2342 range: Range<Anchor>,
2343 codegen: Entity<Codegen>,
2344 workspace: Option<WeakEntity<Workspace>>,
2345 window: &mut Window,
2346 cx: &mut App,
2347 ) -> Self {
2348 let prompt_editor_focus_handle = prompt_editor.focus_handle(cx);
2349 InlineAssist {
2350 group_id,
2351 include_context,
2352 editor: editor.downgrade(),
2353 decorations: Some(InlineAssistDecorations {
2354 prompt_block_id,
2355 prompt_editor: prompt_editor.clone(),
2356 removed_line_block_ids: HashSet::default(),
2357 end_block_id,
2358 }),
2359 range,
2360 codegen: codegen.clone(),
2361 workspace: workspace.clone(),
2362 _subscriptions: vec![
2363 window.on_focus_in(&prompt_editor_focus_handle, cx, move |_, cx| {
2364 InlineAssistant::update_global(cx, |this, cx| {
2365 this.handle_prompt_editor_focus_in(assist_id, cx)
2366 })
2367 }),
2368 window.on_focus_out(&prompt_editor_focus_handle, cx, move |_, _, cx| {
2369 InlineAssistant::update_global(cx, |this, cx| {
2370 this.handle_prompt_editor_focus_out(assist_id, cx)
2371 })
2372 }),
2373 window.subscribe(
2374 prompt_editor,
2375 cx,
2376 move |prompt_editor, event, window, cx| {
2377 InlineAssistant::update_global(cx, |this, cx| {
2378 this.handle_prompt_editor_event(prompt_editor, event, window, cx)
2379 })
2380 },
2381 ),
2382 window.observe(&codegen, cx, {
2383 let editor = editor.downgrade();
2384 move |_, window, cx| {
2385 if let Some(editor) = editor.upgrade() {
2386 InlineAssistant::update_global(cx, |this, cx| {
2387 if let Some(editor_assists) =
2388 this.assists_by_editor.get(&editor.downgrade())
2389 {
2390 editor_assists.highlight_updates.send(()).ok();
2391 }
2392
2393 this.update_editor_blocks(&editor, assist_id, window, cx);
2394 })
2395 }
2396 }
2397 }),
2398 window.subscribe(&codegen, cx, move |codegen, event, window, cx| {
2399 InlineAssistant::update_global(cx, |this, cx| match event {
2400 CodegenEvent::Undone => this.finish_assist(assist_id, false, window, cx),
2401 CodegenEvent::Finished => {
2402 let assist = if let Some(assist) = this.assists.get(&assist_id) {
2403 assist
2404 } else {
2405 return;
2406 };
2407
2408 if let CodegenStatus::Error(error) = codegen.read(cx).status(cx) {
2409 if assist.decorations.is_none() {
2410 if let Some(workspace) = assist
2411 .workspace
2412 .as_ref()
2413 .and_then(|workspace| workspace.upgrade())
2414 {
2415 let error = format!("Inline assistant error: {}", error);
2416 workspace.update(cx, |workspace, cx| {
2417 struct InlineAssistantError;
2418
2419 let id =
2420 NotificationId::composite::<InlineAssistantError>(
2421 assist_id.0,
2422 );
2423
2424 workspace.show_toast(Toast::new(id, error), cx);
2425 })
2426 }
2427 }
2428 }
2429
2430 if assist.decorations.is_none() {
2431 this.finish_assist(assist_id, false, window, cx);
2432 }
2433 }
2434 })
2435 }),
2436 ],
2437 }
2438 }
2439
2440 fn user_prompt(&self, cx: &App) -> Option<String> {
2441 let decorations = self.decorations.as_ref()?;
2442 Some(decorations.prompt_editor.read(cx).prompt(cx))
2443 }
2444
2445 fn assistant_panel_context(&self, cx: &mut App) -> Option<LanguageModelRequest> {
2446 if self.include_context {
2447 let workspace = self.workspace.as_ref()?;
2448 let workspace = workspace.upgrade()?.read(cx);
2449 let assistant_panel = workspace.panel::<AssistantPanel>(cx)?;
2450 Some(
2451 assistant_panel
2452 .read(cx)
2453 .active_context(cx)?
2454 .read(cx)
2455 .to_completion_request(RequestType::Chat, cx),
2456 )
2457 } else {
2458 None
2459 }
2460 }
2461
2462 pub fn count_tokens(&self, cx: &mut App) -> BoxFuture<'static, Result<TokenCounts>> {
2463 let Some(user_prompt) = self.user_prompt(cx) else {
2464 return future::ready(Err(anyhow!("no user prompt"))).boxed();
2465 };
2466 let assistant_panel_context = self.assistant_panel_context(cx);
2467 self.codegen
2468 .read(cx)
2469 .count_tokens(user_prompt, assistant_panel_context, cx)
2470 }
2471}
2472
2473struct InlineAssistDecorations {
2474 prompt_block_id: CustomBlockId,
2475 prompt_editor: Entity<PromptEditor>,
2476 removed_line_block_ids: HashSet<CustomBlockId>,
2477 end_block_id: CustomBlockId,
2478}
2479
2480#[derive(Copy, Clone, Debug)]
2481pub enum CodegenEvent {
2482 Finished,
2483 Undone,
2484}
2485
2486pub struct Codegen {
2487 alternatives: Vec<Entity<CodegenAlternative>>,
2488 active_alternative: usize,
2489 seen_alternatives: HashSet<usize>,
2490 subscriptions: Vec<Subscription>,
2491 buffer: Entity<MultiBuffer>,
2492 range: Range<Anchor>,
2493 initial_transaction_id: Option<TransactionId>,
2494 telemetry: Arc<Telemetry>,
2495 builder: Arc<PromptBuilder>,
2496 is_insertion: bool,
2497}
2498
2499impl Codegen {
2500 pub fn new(
2501 buffer: Entity<MultiBuffer>,
2502 range: Range<Anchor>,
2503 initial_transaction_id: Option<TransactionId>,
2504 telemetry: Arc<Telemetry>,
2505 builder: Arc<PromptBuilder>,
2506 cx: &mut Context<Self>,
2507 ) -> Self {
2508 let codegen = cx.new(|cx| {
2509 CodegenAlternative::new(
2510 buffer.clone(),
2511 range.clone(),
2512 false,
2513 Some(telemetry.clone()),
2514 builder.clone(),
2515 cx,
2516 )
2517 });
2518 let mut this = Self {
2519 is_insertion: range.to_offset(&buffer.read(cx).snapshot(cx)).is_empty(),
2520 alternatives: vec![codegen],
2521 active_alternative: 0,
2522 seen_alternatives: HashSet::default(),
2523 subscriptions: Vec::new(),
2524 buffer,
2525 range,
2526 initial_transaction_id,
2527 telemetry,
2528 builder,
2529 };
2530 this.activate(0, cx);
2531 this
2532 }
2533
2534 fn subscribe_to_alternative(&mut self, cx: &mut Context<Self>) {
2535 let codegen = self.active_alternative().clone();
2536 self.subscriptions.clear();
2537 self.subscriptions
2538 .push(cx.observe(&codegen, |_, _, cx| cx.notify()));
2539 self.subscriptions
2540 .push(cx.subscribe(&codegen, |_, _, event, cx| cx.emit(*event)));
2541 }
2542
2543 fn active_alternative(&self) -> &Entity<CodegenAlternative> {
2544 &self.alternatives[self.active_alternative]
2545 }
2546
2547 fn status<'a>(&self, cx: &'a App) -> &'a CodegenStatus {
2548 &self.active_alternative().read(cx).status
2549 }
2550
2551 fn alternative_count(&self, cx: &App) -> usize {
2552 LanguageModelRegistry::read_global(cx)
2553 .inline_alternative_models()
2554 .len()
2555 + 1
2556 }
2557
2558 pub fn cycle_prev(&mut self, cx: &mut Context<Self>) {
2559 let next_active_ix = if self.active_alternative == 0 {
2560 self.alternatives.len() - 1
2561 } else {
2562 self.active_alternative - 1
2563 };
2564 self.activate(next_active_ix, cx);
2565 }
2566
2567 pub fn cycle_next(&mut self, cx: &mut Context<Self>) {
2568 let next_active_ix = (self.active_alternative + 1) % self.alternatives.len();
2569 self.activate(next_active_ix, cx);
2570 }
2571
2572 fn activate(&mut self, index: usize, cx: &mut Context<Self>) {
2573 self.active_alternative()
2574 .update(cx, |codegen, cx| codegen.set_active(false, cx));
2575 self.seen_alternatives.insert(index);
2576 self.active_alternative = index;
2577 self.active_alternative()
2578 .update(cx, |codegen, cx| codegen.set_active(true, cx));
2579 self.subscribe_to_alternative(cx);
2580 cx.notify();
2581 }
2582
2583 pub fn start(
2584 &mut self,
2585 user_prompt: String,
2586 assistant_panel_context: Option<LanguageModelRequest>,
2587 cx: &mut Context<Self>,
2588 ) -> Result<()> {
2589 let alternative_models = LanguageModelRegistry::read_global(cx)
2590 .inline_alternative_models()
2591 .to_vec();
2592
2593 self.active_alternative()
2594 .update(cx, |alternative, cx| alternative.undo(cx));
2595 self.activate(0, cx);
2596 self.alternatives.truncate(1);
2597
2598 for _ in 0..alternative_models.len() {
2599 self.alternatives.push(cx.new(|cx| {
2600 CodegenAlternative::new(
2601 self.buffer.clone(),
2602 self.range.clone(),
2603 false,
2604 Some(self.telemetry.clone()),
2605 self.builder.clone(),
2606 cx,
2607 )
2608 }));
2609 }
2610
2611 let primary_model = LanguageModelRegistry::read_global(cx)
2612 .active_model()
2613 .context("no active model")?;
2614
2615 for (model, alternative) in iter::once(primary_model)
2616 .chain(alternative_models)
2617 .zip(&self.alternatives)
2618 {
2619 alternative.update(cx, |alternative, cx| {
2620 alternative.start(
2621 user_prompt.clone(),
2622 assistant_panel_context.clone(),
2623 model.clone(),
2624 cx,
2625 )
2626 })?;
2627 }
2628
2629 Ok(())
2630 }
2631
2632 pub fn stop(&mut self, cx: &mut Context<Self>) {
2633 for codegen in &self.alternatives {
2634 codegen.update(cx, |codegen, cx| codegen.stop(cx));
2635 }
2636 }
2637
2638 pub fn undo(&mut self, cx: &mut Context<Self>) {
2639 self.active_alternative()
2640 .update(cx, |codegen, cx| codegen.undo(cx));
2641
2642 self.buffer.update(cx, |buffer, cx| {
2643 if let Some(transaction_id) = self.initial_transaction_id.take() {
2644 buffer.undo_transaction(transaction_id, cx);
2645 buffer.refresh_preview(cx);
2646 }
2647 });
2648 }
2649
2650 pub fn count_tokens(
2651 &self,
2652 user_prompt: String,
2653 assistant_panel_context: Option<LanguageModelRequest>,
2654 cx: &App,
2655 ) -> BoxFuture<'static, Result<TokenCounts>> {
2656 self.active_alternative()
2657 .read(cx)
2658 .count_tokens(user_prompt, assistant_panel_context, cx)
2659 }
2660
2661 pub fn buffer(&self, cx: &App) -> Entity<MultiBuffer> {
2662 self.active_alternative().read(cx).buffer.clone()
2663 }
2664
2665 pub fn old_buffer(&self, cx: &App) -> Entity<Buffer> {
2666 self.active_alternative().read(cx).old_buffer.clone()
2667 }
2668
2669 pub fn snapshot(&self, cx: &App) -> MultiBufferSnapshot {
2670 self.active_alternative().read(cx).snapshot.clone()
2671 }
2672
2673 pub fn edit_position(&self, cx: &App) -> Option<Anchor> {
2674 self.active_alternative().read(cx).edit_position
2675 }
2676
2677 fn diff<'a>(&self, cx: &'a App) -> &'a Diff {
2678 &self.active_alternative().read(cx).diff
2679 }
2680
2681 pub fn last_equal_ranges<'a>(&self, cx: &'a App) -> &'a [Range<Anchor>] {
2682 self.active_alternative().read(cx).last_equal_ranges()
2683 }
2684}
2685
2686impl EventEmitter<CodegenEvent> for Codegen {}
2687
2688pub struct CodegenAlternative {
2689 buffer: Entity<MultiBuffer>,
2690 old_buffer: Entity<Buffer>,
2691 snapshot: MultiBufferSnapshot,
2692 edit_position: Option<Anchor>,
2693 range: Range<Anchor>,
2694 last_equal_ranges: Vec<Range<Anchor>>,
2695 transformation_transaction_id: Option<TransactionId>,
2696 status: CodegenStatus,
2697 generation: Task<()>,
2698 diff: Diff,
2699 telemetry: Option<Arc<Telemetry>>,
2700 _subscription: gpui::Subscription,
2701 builder: Arc<PromptBuilder>,
2702 active: bool,
2703 edits: Vec<(Range<Anchor>, String)>,
2704 line_operations: Vec<LineOperation>,
2705 request: Option<LanguageModelRequest>,
2706 elapsed_time: Option<f64>,
2707 completion: Option<String>,
2708 message_id: Option<String>,
2709}
2710
2711enum CodegenStatus {
2712 Idle,
2713 Pending,
2714 Done,
2715 Error(anyhow::Error),
2716}
2717
2718#[derive(Default)]
2719struct Diff {
2720 deleted_row_ranges: Vec<(Anchor, RangeInclusive<u32>)>,
2721 inserted_row_ranges: Vec<Range<Anchor>>,
2722}
2723
2724impl Diff {
2725 fn is_empty(&self) -> bool {
2726 self.deleted_row_ranges.is_empty() && self.inserted_row_ranges.is_empty()
2727 }
2728}
2729
2730impl EventEmitter<CodegenEvent> for CodegenAlternative {}
2731
2732impl CodegenAlternative {
2733 pub fn new(
2734 multi_buffer: Entity<MultiBuffer>,
2735 range: Range<Anchor>,
2736 active: bool,
2737 telemetry: Option<Arc<Telemetry>>,
2738 builder: Arc<PromptBuilder>,
2739 cx: &mut Context<Self>,
2740 ) -> Self {
2741 let snapshot = multi_buffer.read(cx).snapshot(cx);
2742
2743 let (buffer, _, _) = snapshot
2744 .range_to_buffer_ranges(range.clone())
2745 .pop()
2746 .unwrap();
2747 let old_buffer = cx.new(|cx| {
2748 let text = buffer.as_rope().clone();
2749 let line_ending = buffer.line_ending();
2750 let language = buffer.language().cloned();
2751 let language_registry = multi_buffer
2752 .read(cx)
2753 .buffer(buffer.remote_id())
2754 .unwrap()
2755 .read(cx)
2756 .language_registry();
2757
2758 let mut buffer = Buffer::local_normalized(text, line_ending, cx);
2759 buffer.set_language(language, cx);
2760 if let Some(language_registry) = language_registry {
2761 buffer.set_language_registry(language_registry)
2762 }
2763 buffer
2764 });
2765
2766 Self {
2767 buffer: multi_buffer.clone(),
2768 old_buffer,
2769 edit_position: None,
2770 message_id: None,
2771 snapshot,
2772 last_equal_ranges: Default::default(),
2773 transformation_transaction_id: None,
2774 status: CodegenStatus::Idle,
2775 generation: Task::ready(()),
2776 diff: Diff::default(),
2777 telemetry,
2778 _subscription: cx.subscribe(&multi_buffer, Self::handle_buffer_event),
2779 builder,
2780 active,
2781 edits: Vec::new(),
2782 line_operations: Vec::new(),
2783 range,
2784 request: None,
2785 elapsed_time: None,
2786 completion: None,
2787 }
2788 }
2789
2790 fn set_active(&mut self, active: bool, cx: &mut Context<Self>) {
2791 if active != self.active {
2792 self.active = active;
2793
2794 if self.active {
2795 let edits = self.edits.clone();
2796 self.apply_edits(edits, cx);
2797 if matches!(self.status, CodegenStatus::Pending) {
2798 let line_operations = self.line_operations.clone();
2799 self.reapply_line_based_diff(line_operations, cx);
2800 } else {
2801 self.reapply_batch_diff(cx).detach();
2802 }
2803 } else if let Some(transaction_id) = self.transformation_transaction_id.take() {
2804 self.buffer.update(cx, |buffer, cx| {
2805 buffer.undo_transaction(transaction_id, cx);
2806 buffer.forget_transaction(transaction_id, cx);
2807 });
2808 }
2809 }
2810 }
2811
2812 fn handle_buffer_event(
2813 &mut self,
2814 _buffer: Entity<MultiBuffer>,
2815 event: &multi_buffer::Event,
2816 cx: &mut Context<Self>,
2817 ) {
2818 if let multi_buffer::Event::TransactionUndone { transaction_id } = event {
2819 if self.transformation_transaction_id == Some(*transaction_id) {
2820 self.transformation_transaction_id = None;
2821 self.generation = Task::ready(());
2822 cx.emit(CodegenEvent::Undone);
2823 }
2824 }
2825 }
2826
2827 pub fn last_equal_ranges(&self) -> &[Range<Anchor>] {
2828 &self.last_equal_ranges
2829 }
2830
2831 pub fn count_tokens(
2832 &self,
2833 user_prompt: String,
2834 assistant_panel_context: Option<LanguageModelRequest>,
2835 cx: &App,
2836 ) -> BoxFuture<'static, Result<TokenCounts>> {
2837 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
2838 let request = self.build_request(user_prompt, assistant_panel_context.clone(), cx);
2839 match request {
2840 Ok(request) => {
2841 let total_count = model.count_tokens(request.clone(), cx);
2842 let assistant_panel_count = assistant_panel_context
2843 .map(|context| model.count_tokens(context, cx))
2844 .unwrap_or_else(|| future::ready(Ok(0)).boxed());
2845
2846 async move {
2847 Ok(TokenCounts {
2848 total: total_count.await?,
2849 assistant_panel: assistant_panel_count.await?,
2850 })
2851 }
2852 .boxed()
2853 }
2854 Err(error) => futures::future::ready(Err(error)).boxed(),
2855 }
2856 } else {
2857 future::ready(Err(anyhow!("no active model"))).boxed()
2858 }
2859 }
2860
2861 pub fn start(
2862 &mut self,
2863 user_prompt: String,
2864 assistant_panel_context: Option<LanguageModelRequest>,
2865 model: Arc<dyn LanguageModel>,
2866 cx: &mut Context<Self>,
2867 ) -> Result<()> {
2868 if let Some(transformation_transaction_id) = self.transformation_transaction_id.take() {
2869 self.buffer.update(cx, |buffer, cx| {
2870 buffer.undo_transaction(transformation_transaction_id, cx);
2871 });
2872 }
2873
2874 self.edit_position = Some(self.range.start.bias_right(&self.snapshot));
2875
2876 let api_key = model.api_key(cx);
2877 let telemetry_id = model.telemetry_id();
2878 let provider_id = model.provider_id();
2879 let stream: LocalBoxFuture<Result<LanguageModelTextStream>> =
2880 if user_prompt.trim().to_lowercase() == "delete" {
2881 async { Ok(LanguageModelTextStream::default()) }.boxed_local()
2882 } else {
2883 let request = self.build_request(user_prompt, assistant_panel_context, cx)?;
2884 self.request = Some(request.clone());
2885
2886 cx.spawn(|_, cx| async move { model.stream_completion_text(request, &cx).await })
2887 .boxed_local()
2888 };
2889 self.handle_stream(telemetry_id, provider_id.to_string(), api_key, stream, cx);
2890 Ok(())
2891 }
2892
2893 fn build_request(
2894 &self,
2895 user_prompt: String,
2896 assistant_panel_context: Option<LanguageModelRequest>,
2897 cx: &App,
2898 ) -> Result<LanguageModelRequest> {
2899 let buffer = self.buffer.read(cx).snapshot(cx);
2900 let language = buffer.language_at(self.range.start);
2901 let language_name = if let Some(language) = language.as_ref() {
2902 if Arc::ptr_eq(language, &language::PLAIN_TEXT) {
2903 None
2904 } else {
2905 Some(language.name())
2906 }
2907 } else {
2908 None
2909 };
2910
2911 let language_name = language_name.as_ref();
2912 let start = buffer.point_to_buffer_offset(self.range.start);
2913 let end = buffer.point_to_buffer_offset(self.range.end);
2914 let (buffer, range) = if let Some((start, end)) = start.zip(end) {
2915 let (start_buffer, start_buffer_offset) = start;
2916 let (end_buffer, end_buffer_offset) = end;
2917 if start_buffer.remote_id() == end_buffer.remote_id() {
2918 (start_buffer.clone(), start_buffer_offset..end_buffer_offset)
2919 } else {
2920 return Err(anyhow::anyhow!("invalid transformation range"));
2921 }
2922 } else {
2923 return Err(anyhow::anyhow!("invalid transformation range"));
2924 };
2925
2926 let prompt = self
2927 .builder
2928 .generate_inline_transformation_prompt(user_prompt, language_name, buffer, range)
2929 .map_err(|e| anyhow::anyhow!("Failed to generate content prompt: {}", e))?;
2930
2931 let mut messages = Vec::new();
2932 if let Some(context_request) = assistant_panel_context {
2933 messages = context_request.messages;
2934 }
2935
2936 messages.push(LanguageModelRequestMessage {
2937 role: Role::User,
2938 content: vec![prompt.into()],
2939 cache: false,
2940 });
2941
2942 Ok(LanguageModelRequest {
2943 messages,
2944 tools: Vec::new(),
2945 stop: Vec::new(),
2946 temperature: None,
2947 })
2948 }
2949
2950 pub fn handle_stream(
2951 &mut self,
2952 model_telemetry_id: String,
2953 model_provider_id: String,
2954 model_api_key: Option<String>,
2955 stream: impl 'static + Future<Output = Result<LanguageModelTextStream>>,
2956 cx: &mut Context<Self>,
2957 ) {
2958 let start_time = Instant::now();
2959 let snapshot = self.snapshot.clone();
2960 let selected_text = snapshot
2961 .text_for_range(self.range.start..self.range.end)
2962 .collect::<Rope>();
2963
2964 let selection_start = self.range.start.to_point(&snapshot);
2965
2966 // Start with the indentation of the first line in the selection
2967 let mut suggested_line_indent = snapshot
2968 .suggested_indents(selection_start.row..=selection_start.row, cx)
2969 .into_values()
2970 .next()
2971 .unwrap_or_else(|| snapshot.indent_size_for_line(MultiBufferRow(selection_start.row)));
2972
2973 // If the first line in the selection does not have indentation, check the following lines
2974 if suggested_line_indent.len == 0 && suggested_line_indent.kind == IndentKind::Space {
2975 for row in selection_start.row..=self.range.end.to_point(&snapshot).row {
2976 let line_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
2977 // Prefer tabs if a line in the selection uses tabs as indentation
2978 if line_indent.kind == IndentKind::Tab {
2979 suggested_line_indent.kind = IndentKind::Tab;
2980 break;
2981 }
2982 }
2983 }
2984
2985 let http_client = cx.http_client().clone();
2986 let telemetry = self.telemetry.clone();
2987 let language_name = {
2988 let multibuffer = self.buffer.read(cx);
2989 let snapshot = multibuffer.snapshot(cx);
2990 let ranges = snapshot.range_to_buffer_ranges(self.range.clone());
2991 ranges
2992 .first()
2993 .and_then(|(buffer, _, _)| buffer.language())
2994 .map(|language| language.name())
2995 };
2996
2997 self.diff = Diff::default();
2998 self.status = CodegenStatus::Pending;
2999 let mut edit_start = self.range.start.to_offset(&snapshot);
3000 let completion = Arc::new(Mutex::new(String::new()));
3001 let completion_clone = completion.clone();
3002
3003 self.generation = cx.spawn(|codegen, mut cx| {
3004 async move {
3005 let stream = stream.await;
3006 let message_id = stream
3007 .as_ref()
3008 .ok()
3009 .and_then(|stream| stream.message_id.clone());
3010 let generate = async {
3011 let (mut diff_tx, mut diff_rx) = mpsc::channel(1);
3012 let executor = cx.background_executor().clone();
3013 let message_id = message_id.clone();
3014 let line_based_stream_diff: Task<anyhow::Result<()>> =
3015 cx.background_executor().spawn(async move {
3016 let mut response_latency = None;
3017 let request_start = Instant::now();
3018 let diff = async {
3019 let chunks = StripInvalidSpans::new(stream?.stream);
3020 futures::pin_mut!(chunks);
3021 let mut diff = StreamingDiff::new(selected_text.to_string());
3022 let mut line_diff = LineDiff::default();
3023
3024 let mut new_text = String::new();
3025 let mut base_indent = None;
3026 let mut line_indent = None;
3027 let mut first_line = true;
3028
3029 while let Some(chunk) = chunks.next().await {
3030 if response_latency.is_none() {
3031 response_latency = Some(request_start.elapsed());
3032 }
3033 let chunk = chunk?;
3034 completion_clone.lock().push_str(&chunk);
3035
3036 let mut lines = chunk.split('\n').peekable();
3037 while let Some(line) = lines.next() {
3038 new_text.push_str(line);
3039 if line_indent.is_none() {
3040 if let Some(non_whitespace_ch_ix) =
3041 new_text.find(|ch: char| !ch.is_whitespace())
3042 {
3043 line_indent = Some(non_whitespace_ch_ix);
3044 base_indent = base_indent.or(line_indent);
3045
3046 let line_indent = line_indent.unwrap();
3047 let base_indent = base_indent.unwrap();
3048 let indent_delta =
3049 line_indent as i32 - base_indent as i32;
3050 let mut corrected_indent_len = cmp::max(
3051 0,
3052 suggested_line_indent.len as i32 + indent_delta,
3053 )
3054 as usize;
3055 if first_line {
3056 corrected_indent_len = corrected_indent_len
3057 .saturating_sub(
3058 selection_start.column as usize,
3059 );
3060 }
3061
3062 let indent_char = suggested_line_indent.char();
3063 let mut indent_buffer = [0; 4];
3064 let indent_str =
3065 indent_char.encode_utf8(&mut indent_buffer);
3066 new_text.replace_range(
3067 ..line_indent,
3068 &indent_str.repeat(corrected_indent_len),
3069 );
3070 }
3071 }
3072
3073 if line_indent.is_some() {
3074 let char_ops = diff.push_new(&new_text);
3075 line_diff
3076 .push_char_operations(&char_ops, &selected_text);
3077 diff_tx
3078 .send((char_ops, line_diff.line_operations()))
3079 .await?;
3080 new_text.clear();
3081 }
3082
3083 if lines.peek().is_some() {
3084 let char_ops = diff.push_new("\n");
3085 line_diff
3086 .push_char_operations(&char_ops, &selected_text);
3087 diff_tx
3088 .send((char_ops, line_diff.line_operations()))
3089 .await?;
3090 if line_indent.is_none() {
3091 // Don't write out the leading indentation in empty lines on the next line
3092 // This is the case where the above if statement didn't clear the buffer
3093 new_text.clear();
3094 }
3095 line_indent = None;
3096 first_line = false;
3097 }
3098 }
3099 }
3100
3101 let mut char_ops = diff.push_new(&new_text);
3102 char_ops.extend(diff.finish());
3103 line_diff.push_char_operations(&char_ops, &selected_text);
3104 line_diff.finish(&selected_text);
3105 diff_tx
3106 .send((char_ops, line_diff.line_operations()))
3107 .await?;
3108
3109 anyhow::Ok(())
3110 };
3111
3112 let result = diff.await;
3113
3114 let error_message =
3115 result.as_ref().err().map(|error| error.to_string());
3116 report_assistant_event(
3117 AssistantEvent {
3118 conversation_id: None,
3119 message_id,
3120 kind: AssistantKind::Inline,
3121 phase: AssistantPhase::Response,
3122 model: model_telemetry_id,
3123 model_provider: model_provider_id.to_string(),
3124 response_latency,
3125 error_message,
3126 language_name: language_name.map(|name| name.to_proto()),
3127 },
3128 telemetry,
3129 http_client,
3130 model_api_key,
3131 &executor,
3132 );
3133
3134 result?;
3135 Ok(())
3136 });
3137
3138 while let Some((char_ops, line_ops)) = diff_rx.next().await {
3139 codegen.update(&mut cx, |codegen, cx| {
3140 codegen.last_equal_ranges.clear();
3141
3142 let edits = char_ops
3143 .into_iter()
3144 .filter_map(|operation| match operation {
3145 CharOperation::Insert { text } => {
3146 let edit_start = snapshot.anchor_after(edit_start);
3147 Some((edit_start..edit_start, text))
3148 }
3149 CharOperation::Delete { bytes } => {
3150 let edit_end = edit_start + bytes;
3151 let edit_range = snapshot.anchor_after(edit_start)
3152 ..snapshot.anchor_before(edit_end);
3153 edit_start = edit_end;
3154 Some((edit_range, String::new()))
3155 }
3156 CharOperation::Keep { bytes } => {
3157 let edit_end = edit_start + bytes;
3158 let edit_range = snapshot.anchor_after(edit_start)
3159 ..snapshot.anchor_before(edit_end);
3160 edit_start = edit_end;
3161 codegen.last_equal_ranges.push(edit_range);
3162 None
3163 }
3164 })
3165 .collect::<Vec<_>>();
3166
3167 if codegen.active {
3168 codegen.apply_edits(edits.iter().cloned(), cx);
3169 codegen.reapply_line_based_diff(line_ops.iter().cloned(), cx);
3170 }
3171 codegen.edits.extend(edits);
3172 codegen.line_operations = line_ops;
3173 codegen.edit_position = Some(snapshot.anchor_after(edit_start));
3174
3175 cx.notify();
3176 })?;
3177 }
3178
3179 // Streaming stopped and we have the new text in the buffer, and a line-based diff applied for the whole new buffer.
3180 // That diff is not what a regular diff is and might look unexpected, ergo apply a regular diff.
3181 // It's fine to apply even if the rest of the line diffing fails, as no more hunks are coming through `diff_rx`.
3182 let batch_diff_task =
3183 codegen.update(&mut cx, |codegen, cx| codegen.reapply_batch_diff(cx))?;
3184 let (line_based_stream_diff, ()) =
3185 join!(line_based_stream_diff, batch_diff_task);
3186 line_based_stream_diff?;
3187
3188 anyhow::Ok(())
3189 };
3190
3191 let result = generate.await;
3192 let elapsed_time = start_time.elapsed().as_secs_f64();
3193
3194 codegen
3195 .update(&mut cx, |this, cx| {
3196 this.message_id = message_id;
3197 this.last_equal_ranges.clear();
3198 if let Err(error) = result {
3199 this.status = CodegenStatus::Error(error);
3200 } else {
3201 this.status = CodegenStatus::Done;
3202 }
3203 this.elapsed_time = Some(elapsed_time);
3204 this.completion = Some(completion.lock().clone());
3205 cx.emit(CodegenEvent::Finished);
3206 cx.notify();
3207 })
3208 .ok();
3209 }
3210 });
3211 cx.notify();
3212 }
3213
3214 pub fn stop(&mut self, cx: &mut Context<Self>) {
3215 self.last_equal_ranges.clear();
3216 if self.diff.is_empty() {
3217 self.status = CodegenStatus::Idle;
3218 } else {
3219 self.status = CodegenStatus::Done;
3220 }
3221 self.generation = Task::ready(());
3222 cx.emit(CodegenEvent::Finished);
3223 cx.notify();
3224 }
3225
3226 pub fn undo(&mut self, cx: &mut Context<Self>) {
3227 self.buffer.update(cx, |buffer, cx| {
3228 if let Some(transaction_id) = self.transformation_transaction_id.take() {
3229 buffer.undo_transaction(transaction_id, cx);
3230 buffer.refresh_preview(cx);
3231 }
3232 });
3233 }
3234
3235 fn apply_edits(
3236 &mut self,
3237 edits: impl IntoIterator<Item = (Range<Anchor>, String)>,
3238 cx: &mut Context<CodegenAlternative>,
3239 ) {
3240 let transaction = self.buffer.update(cx, |buffer, cx| {
3241 // Avoid grouping assistant edits with user edits.
3242 buffer.finalize_last_transaction(cx);
3243 buffer.start_transaction(cx);
3244 buffer.edit(edits, None, cx);
3245 buffer.end_transaction(cx)
3246 });
3247
3248 if let Some(transaction) = transaction {
3249 if let Some(first_transaction) = self.transformation_transaction_id {
3250 // Group all assistant edits into the first transaction.
3251 self.buffer.update(cx, |buffer, cx| {
3252 buffer.merge_transactions(transaction, first_transaction, cx)
3253 });
3254 } else {
3255 self.transformation_transaction_id = Some(transaction);
3256 self.buffer
3257 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3258 }
3259 }
3260 }
3261
3262 fn reapply_line_based_diff(
3263 &mut self,
3264 line_operations: impl IntoIterator<Item = LineOperation>,
3265 cx: &mut Context<Self>,
3266 ) {
3267 let old_snapshot = self.snapshot.clone();
3268 let old_range = self.range.to_point(&old_snapshot);
3269 let new_snapshot = self.buffer.read(cx).snapshot(cx);
3270 let new_range = self.range.to_point(&new_snapshot);
3271
3272 let mut old_row = old_range.start.row;
3273 let mut new_row = new_range.start.row;
3274
3275 self.diff.deleted_row_ranges.clear();
3276 self.diff.inserted_row_ranges.clear();
3277 for operation in line_operations {
3278 match operation {
3279 LineOperation::Keep { lines } => {
3280 old_row += lines;
3281 new_row += lines;
3282 }
3283 LineOperation::Delete { lines } => {
3284 let old_end_row = old_row + lines - 1;
3285 let new_row = new_snapshot.anchor_before(Point::new(new_row, 0));
3286
3287 if let Some((_, last_deleted_row_range)) =
3288 self.diff.deleted_row_ranges.last_mut()
3289 {
3290 if *last_deleted_row_range.end() + 1 == old_row {
3291 *last_deleted_row_range = *last_deleted_row_range.start()..=old_end_row;
3292 } else {
3293 self.diff
3294 .deleted_row_ranges
3295 .push((new_row, old_row..=old_end_row));
3296 }
3297 } else {
3298 self.diff
3299 .deleted_row_ranges
3300 .push((new_row, old_row..=old_end_row));
3301 }
3302
3303 old_row += lines;
3304 }
3305 LineOperation::Insert { lines } => {
3306 let new_end_row = new_row + lines - 1;
3307 let start = new_snapshot.anchor_before(Point::new(new_row, 0));
3308 let end = new_snapshot.anchor_before(Point::new(
3309 new_end_row,
3310 new_snapshot.line_len(MultiBufferRow(new_end_row)),
3311 ));
3312 self.diff.inserted_row_ranges.push(start..end);
3313 new_row += lines;
3314 }
3315 }
3316
3317 cx.notify();
3318 }
3319 }
3320
3321 fn reapply_batch_diff(&mut self, cx: &mut Context<Self>) -> Task<()> {
3322 let old_snapshot = self.snapshot.clone();
3323 let old_range = self.range.to_point(&old_snapshot);
3324 let new_snapshot = self.buffer.read(cx).snapshot(cx);
3325 let new_range = self.range.to_point(&new_snapshot);
3326
3327 cx.spawn(|codegen, mut cx| async move {
3328 let (deleted_row_ranges, inserted_row_ranges) = cx
3329 .background_executor()
3330 .spawn(async move {
3331 let old_text = old_snapshot
3332 .text_for_range(
3333 Point::new(old_range.start.row, 0)
3334 ..Point::new(
3335 old_range.end.row,
3336 old_snapshot.line_len(MultiBufferRow(old_range.end.row)),
3337 ),
3338 )
3339 .collect::<String>();
3340 let new_text = new_snapshot
3341 .text_for_range(
3342 Point::new(new_range.start.row, 0)
3343 ..Point::new(
3344 new_range.end.row,
3345 new_snapshot.line_len(MultiBufferRow(new_range.end.row)),
3346 ),
3347 )
3348 .collect::<String>();
3349
3350 let mut old_row = old_range.start.row;
3351 let mut new_row = new_range.start.row;
3352 let batch_diff =
3353 similar::TextDiff::from_lines(old_text.as_str(), new_text.as_str());
3354
3355 let mut deleted_row_ranges: Vec<(Anchor, RangeInclusive<u32>)> = Vec::new();
3356 let mut inserted_row_ranges = Vec::new();
3357 for change in batch_diff.iter_all_changes() {
3358 let line_count = change.value().lines().count() as u32;
3359 match change.tag() {
3360 similar::ChangeTag::Equal => {
3361 old_row += line_count;
3362 new_row += line_count;
3363 }
3364 similar::ChangeTag::Delete => {
3365 let old_end_row = old_row + line_count - 1;
3366 let new_row = new_snapshot.anchor_before(Point::new(new_row, 0));
3367
3368 if let Some((_, last_deleted_row_range)) =
3369 deleted_row_ranges.last_mut()
3370 {
3371 if *last_deleted_row_range.end() + 1 == old_row {
3372 *last_deleted_row_range =
3373 *last_deleted_row_range.start()..=old_end_row;
3374 } else {
3375 deleted_row_ranges.push((new_row, old_row..=old_end_row));
3376 }
3377 } else {
3378 deleted_row_ranges.push((new_row, old_row..=old_end_row));
3379 }
3380
3381 old_row += line_count;
3382 }
3383 similar::ChangeTag::Insert => {
3384 let new_end_row = new_row + line_count - 1;
3385 let start = new_snapshot.anchor_before(Point::new(new_row, 0));
3386 let end = new_snapshot.anchor_before(Point::new(
3387 new_end_row,
3388 new_snapshot.line_len(MultiBufferRow(new_end_row)),
3389 ));
3390 inserted_row_ranges.push(start..end);
3391 new_row += line_count;
3392 }
3393 }
3394 }
3395
3396 (deleted_row_ranges, inserted_row_ranges)
3397 })
3398 .await;
3399
3400 codegen
3401 .update(&mut cx, |codegen, cx| {
3402 codegen.diff.deleted_row_ranges = deleted_row_ranges;
3403 codegen.diff.inserted_row_ranges = inserted_row_ranges;
3404 cx.notify();
3405 })
3406 .ok();
3407 })
3408 }
3409}
3410
3411struct StripInvalidSpans<T> {
3412 stream: T,
3413 stream_done: bool,
3414 buffer: String,
3415 first_line: bool,
3416 line_end: bool,
3417 starts_with_code_block: bool,
3418}
3419
3420impl<T> StripInvalidSpans<T>
3421where
3422 T: Stream<Item = Result<String>>,
3423{
3424 fn new(stream: T) -> Self {
3425 Self {
3426 stream,
3427 stream_done: false,
3428 buffer: String::new(),
3429 first_line: true,
3430 line_end: false,
3431 starts_with_code_block: false,
3432 }
3433 }
3434}
3435
3436impl<T> Stream for StripInvalidSpans<T>
3437where
3438 T: Stream<Item = Result<String>>,
3439{
3440 type Item = Result<String>;
3441
3442 fn poll_next(self: Pin<&mut Self>, cx: &mut task::Context) -> Poll<Option<Self::Item>> {
3443 const CODE_BLOCK_DELIMITER: &str = "```";
3444 const CURSOR_SPAN: &str = "<|CURSOR|>";
3445
3446 let this = unsafe { self.get_unchecked_mut() };
3447 loop {
3448 if !this.stream_done {
3449 let mut stream = unsafe { Pin::new_unchecked(&mut this.stream) };
3450 match stream.as_mut().poll_next(cx) {
3451 Poll::Ready(Some(Ok(chunk))) => {
3452 this.buffer.push_str(&chunk);
3453 }
3454 Poll::Ready(Some(Err(error))) => return Poll::Ready(Some(Err(error))),
3455 Poll::Ready(None) => {
3456 this.stream_done = true;
3457 }
3458 Poll::Pending => return Poll::Pending,
3459 }
3460 }
3461
3462 let mut chunk = String::new();
3463 let mut consumed = 0;
3464 if !this.buffer.is_empty() {
3465 let mut lines = this.buffer.split('\n').enumerate().peekable();
3466 while let Some((line_ix, line)) = lines.next() {
3467 if line_ix > 0 {
3468 this.first_line = false;
3469 }
3470
3471 if this.first_line {
3472 let trimmed_line = line.trim();
3473 if lines.peek().is_some() {
3474 if trimmed_line.starts_with(CODE_BLOCK_DELIMITER) {
3475 consumed += line.len() + 1;
3476 this.starts_with_code_block = true;
3477 continue;
3478 }
3479 } else if trimmed_line.is_empty()
3480 || prefixes(CODE_BLOCK_DELIMITER)
3481 .any(|prefix| trimmed_line.starts_with(prefix))
3482 {
3483 break;
3484 }
3485 }
3486
3487 let line_without_cursor = line.replace(CURSOR_SPAN, "");
3488 if lines.peek().is_some() {
3489 if this.line_end {
3490 chunk.push('\n');
3491 }
3492
3493 chunk.push_str(&line_without_cursor);
3494 this.line_end = true;
3495 consumed += line.len() + 1;
3496 } else if this.stream_done {
3497 if !this.starts_with_code_block
3498 || !line_without_cursor.trim().ends_with(CODE_BLOCK_DELIMITER)
3499 {
3500 if this.line_end {
3501 chunk.push('\n');
3502 }
3503
3504 chunk.push_str(&line);
3505 }
3506
3507 consumed += line.len();
3508 } else {
3509 let trimmed_line = line.trim();
3510 if trimmed_line.is_empty()
3511 || prefixes(CURSOR_SPAN).any(|prefix| trimmed_line.ends_with(prefix))
3512 || prefixes(CODE_BLOCK_DELIMITER)
3513 .any(|prefix| trimmed_line.ends_with(prefix))
3514 {
3515 break;
3516 } else {
3517 if this.line_end {
3518 chunk.push('\n');
3519 this.line_end = false;
3520 }
3521
3522 chunk.push_str(&line_without_cursor);
3523 consumed += line.len();
3524 }
3525 }
3526 }
3527 }
3528
3529 this.buffer = this.buffer.split_off(consumed);
3530 if !chunk.is_empty() {
3531 return Poll::Ready(Some(Ok(chunk)));
3532 } else if this.stream_done {
3533 return Poll::Ready(None);
3534 }
3535 }
3536 }
3537}
3538
3539struct AssistantCodeActionProvider {
3540 editor: WeakEntity<Editor>,
3541 workspace: WeakEntity<Workspace>,
3542}
3543
3544const ASSISTANT_CODE_ACTION_PROVIDER_ID: &str = "assistant";
3545
3546impl CodeActionProvider for AssistantCodeActionProvider {
3547 fn id(&self) -> Arc<str> {
3548 ASSISTANT_CODE_ACTION_PROVIDER_ID.into()
3549 }
3550
3551 fn code_actions(
3552 &self,
3553 buffer: &Entity<Buffer>,
3554 range: Range<text::Anchor>,
3555 _: &mut Window,
3556 cx: &mut App,
3557 ) -> Task<Result<Vec<CodeAction>>> {
3558 if !AssistantSettings::get_global(cx).enabled {
3559 return Task::ready(Ok(Vec::new()));
3560 }
3561
3562 let snapshot = buffer.read(cx).snapshot();
3563 let mut range = range.to_point(&snapshot);
3564
3565 // Expand the range to line boundaries.
3566 range.start.column = 0;
3567 range.end.column = snapshot.line_len(range.end.row);
3568
3569 let mut has_diagnostics = false;
3570 for diagnostic in snapshot.diagnostics_in_range::<_, Point>(range.clone(), false) {
3571 range.start = cmp::min(range.start, diagnostic.range.start);
3572 range.end = cmp::max(range.end, diagnostic.range.end);
3573 has_diagnostics = true;
3574 }
3575 if has_diagnostics {
3576 if let Some(symbols_containing_start) = snapshot.symbols_containing(range.start, None) {
3577 if let Some(symbol) = symbols_containing_start.last() {
3578 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3579 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3580 }
3581 }
3582
3583 if let Some(symbols_containing_end) = snapshot.symbols_containing(range.end, None) {
3584 if let Some(symbol) = symbols_containing_end.last() {
3585 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3586 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3587 }
3588 }
3589
3590 Task::ready(Ok(vec![CodeAction {
3591 server_id: language::LanguageServerId(0),
3592 range: snapshot.anchor_before(range.start)..snapshot.anchor_after(range.end),
3593 lsp_action: lsp::CodeAction {
3594 title: "Fix with Assistant".into(),
3595 ..Default::default()
3596 },
3597 }]))
3598 } else {
3599 Task::ready(Ok(Vec::new()))
3600 }
3601 }
3602
3603 fn apply_code_action(
3604 &self,
3605 buffer: Entity<Buffer>,
3606 action: CodeAction,
3607 excerpt_id: ExcerptId,
3608 _push_to_history: bool,
3609 window: &mut Window,
3610 cx: &mut App,
3611 ) -> Task<Result<ProjectTransaction>> {
3612 let editor = self.editor.clone();
3613 let workspace = self.workspace.clone();
3614 window.spawn(cx, |mut cx| async move {
3615 let editor = editor.upgrade().context("editor was released")?;
3616 let range = editor
3617 .update(&mut cx, |editor, cx| {
3618 editor.buffer().update(cx, |multibuffer, cx| {
3619 let buffer = buffer.read(cx);
3620 let multibuffer_snapshot = multibuffer.read(cx);
3621
3622 let old_context_range =
3623 multibuffer_snapshot.context_range_for_excerpt(excerpt_id)?;
3624 let mut new_context_range = old_context_range.clone();
3625 if action
3626 .range
3627 .start
3628 .cmp(&old_context_range.start, buffer)
3629 .is_lt()
3630 {
3631 new_context_range.start = action.range.start;
3632 }
3633 if action.range.end.cmp(&old_context_range.end, buffer).is_gt() {
3634 new_context_range.end = action.range.end;
3635 }
3636 drop(multibuffer_snapshot);
3637
3638 if new_context_range != old_context_range {
3639 multibuffer.resize_excerpt(excerpt_id, new_context_range, cx);
3640 }
3641
3642 let multibuffer_snapshot = multibuffer.read(cx);
3643 Some(
3644 multibuffer_snapshot
3645 .anchor_in_excerpt(excerpt_id, action.range.start)?
3646 ..multibuffer_snapshot
3647 .anchor_in_excerpt(excerpt_id, action.range.end)?,
3648 )
3649 })
3650 })?
3651 .context("invalid range")?;
3652 let assistant_panel = workspace.update(&mut cx, |workspace, cx| {
3653 workspace
3654 .panel::<AssistantPanel>(cx)
3655 .context("assistant panel was released")
3656 })??;
3657
3658 cx.update_global(|assistant: &mut InlineAssistant, window, cx| {
3659 let assist_id = assistant.suggest_assist(
3660 &editor,
3661 range,
3662 "Fix Diagnostics".into(),
3663 None,
3664 true,
3665 Some(workspace),
3666 Some(&assistant_panel),
3667 window,
3668 cx,
3669 );
3670 assistant.start_assist(assist_id, window, cx);
3671 })?;
3672
3673 Ok(ProjectTransaction::default())
3674 })
3675 }
3676}
3677
3678fn prefixes(text: &str) -> impl Iterator<Item = &str> {
3679 (0..text.len() - 1).map(|ix| &text[..ix + 1])
3680}
3681
3682fn merge_ranges(ranges: &mut Vec<Range<Anchor>>, buffer: &MultiBufferSnapshot) {
3683 ranges.sort_unstable_by(|a, b| {
3684 a.start
3685 .cmp(&b.start, buffer)
3686 .then_with(|| b.end.cmp(&a.end, buffer))
3687 });
3688
3689 let mut ix = 0;
3690 while ix + 1 < ranges.len() {
3691 let b = ranges[ix + 1].clone();
3692 let a = &mut ranges[ix];
3693 if a.end.cmp(&b.start, buffer).is_gt() {
3694 if a.end.cmp(&b.end, buffer).is_lt() {
3695 a.end = b.end;
3696 }
3697 ranges.remove(ix + 1);
3698 } else {
3699 ix += 1;
3700 }
3701 }
3702}
3703
3704#[cfg(test)]
3705mod tests {
3706 use super::*;
3707 use futures::stream::{self};
3708 use gpui::TestAppContext;
3709 use indoc::indoc;
3710 use language::{
3711 language_settings, tree_sitter_rust, Buffer, Language, LanguageConfig, LanguageMatcher,
3712 Point,
3713 };
3714 use language_model::LanguageModelRegistry;
3715 use rand::prelude::*;
3716 use serde::Serialize;
3717 use settings::SettingsStore;
3718 use std::{future, sync::Arc};
3719
3720 #[derive(Serialize)]
3721 pub struct DummyCompletionRequest {
3722 pub name: String,
3723 }
3724
3725 #[gpui::test(iterations = 10)]
3726 async fn test_transform_autoindent(cx: &mut TestAppContext, mut rng: StdRng) {
3727 cx.set_global(cx.update(SettingsStore::test));
3728 cx.update(language_model::LanguageModelRegistry::test);
3729 cx.update(language_settings::init);
3730
3731 let text = indoc! {"
3732 fn main() {
3733 let x = 0;
3734 for _ in 0..10 {
3735 x += 1;
3736 }
3737 }
3738 "};
3739 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3740 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3741 let range = buffer.read_with(cx, |buffer, cx| {
3742 let snapshot = buffer.snapshot(cx);
3743 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(4, 5))
3744 });
3745 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3746 let codegen = cx.new(|cx| {
3747 CodegenAlternative::new(
3748 buffer.clone(),
3749 range.clone(),
3750 true,
3751 None,
3752 prompt_builder,
3753 cx,
3754 )
3755 });
3756
3757 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3758
3759 let mut new_text = concat!(
3760 " let mut x = 0;\n",
3761 " while x < 10 {\n",
3762 " x += 1;\n",
3763 " }",
3764 );
3765 while !new_text.is_empty() {
3766 let max_len = cmp::min(new_text.len(), 10);
3767 let len = rng.gen_range(1..=max_len);
3768 let (chunk, suffix) = new_text.split_at(len);
3769 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3770 new_text = suffix;
3771 cx.background_executor.run_until_parked();
3772 }
3773 drop(chunks_tx);
3774 cx.background_executor.run_until_parked();
3775
3776 assert_eq!(
3777 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3778 indoc! {"
3779 fn main() {
3780 let mut x = 0;
3781 while x < 10 {
3782 x += 1;
3783 }
3784 }
3785 "}
3786 );
3787 }
3788
3789 #[gpui::test(iterations = 10)]
3790 async fn test_autoindent_when_generating_past_indentation(
3791 cx: &mut TestAppContext,
3792 mut rng: StdRng,
3793 ) {
3794 cx.set_global(cx.update(SettingsStore::test));
3795 cx.update(language_settings::init);
3796
3797 let text = indoc! {"
3798 fn main() {
3799 le
3800 }
3801 "};
3802 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3803 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3804 let range = buffer.read_with(cx, |buffer, cx| {
3805 let snapshot = buffer.snapshot(cx);
3806 snapshot.anchor_before(Point::new(1, 6))..snapshot.anchor_after(Point::new(1, 6))
3807 });
3808 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3809 let codegen = cx.new(|cx| {
3810 CodegenAlternative::new(
3811 buffer.clone(),
3812 range.clone(),
3813 true,
3814 None,
3815 prompt_builder,
3816 cx,
3817 )
3818 });
3819
3820 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3821
3822 cx.background_executor.run_until_parked();
3823
3824 let mut new_text = concat!(
3825 "t mut x = 0;\n",
3826 "while x < 10 {\n",
3827 " x += 1;\n",
3828 "}", //
3829 );
3830 while !new_text.is_empty() {
3831 let max_len = cmp::min(new_text.len(), 10);
3832 let len = rng.gen_range(1..=max_len);
3833 let (chunk, suffix) = new_text.split_at(len);
3834 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3835 new_text = suffix;
3836 cx.background_executor.run_until_parked();
3837 }
3838 drop(chunks_tx);
3839 cx.background_executor.run_until_parked();
3840
3841 assert_eq!(
3842 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3843 indoc! {"
3844 fn main() {
3845 let mut x = 0;
3846 while x < 10 {
3847 x += 1;
3848 }
3849 }
3850 "}
3851 );
3852 }
3853
3854 #[gpui::test(iterations = 10)]
3855 async fn test_autoindent_when_generating_before_indentation(
3856 cx: &mut TestAppContext,
3857 mut rng: StdRng,
3858 ) {
3859 cx.update(LanguageModelRegistry::test);
3860 cx.set_global(cx.update(SettingsStore::test));
3861 cx.update(language_settings::init);
3862
3863 let text = concat!(
3864 "fn main() {\n",
3865 " \n",
3866 "}\n" //
3867 );
3868 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3869 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3870 let range = buffer.read_with(cx, |buffer, cx| {
3871 let snapshot = buffer.snapshot(cx);
3872 snapshot.anchor_before(Point::new(1, 2))..snapshot.anchor_after(Point::new(1, 2))
3873 });
3874 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3875 let codegen = cx.new(|cx| {
3876 CodegenAlternative::new(
3877 buffer.clone(),
3878 range.clone(),
3879 true,
3880 None,
3881 prompt_builder,
3882 cx,
3883 )
3884 });
3885
3886 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3887
3888 cx.background_executor.run_until_parked();
3889
3890 let mut new_text = concat!(
3891 "let mut x = 0;\n",
3892 "while x < 10 {\n",
3893 " x += 1;\n",
3894 "}", //
3895 );
3896 while !new_text.is_empty() {
3897 let max_len = cmp::min(new_text.len(), 10);
3898 let len = rng.gen_range(1..=max_len);
3899 let (chunk, suffix) = new_text.split_at(len);
3900 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3901 new_text = suffix;
3902 cx.background_executor.run_until_parked();
3903 }
3904 drop(chunks_tx);
3905 cx.background_executor.run_until_parked();
3906
3907 assert_eq!(
3908 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3909 indoc! {"
3910 fn main() {
3911 let mut x = 0;
3912 while x < 10 {
3913 x += 1;
3914 }
3915 }
3916 "}
3917 );
3918 }
3919
3920 #[gpui::test(iterations = 10)]
3921 async fn test_autoindent_respects_tabs_in_selection(cx: &mut TestAppContext) {
3922 cx.update(LanguageModelRegistry::test);
3923 cx.set_global(cx.update(SettingsStore::test));
3924 cx.update(language_settings::init);
3925
3926 let text = indoc! {"
3927 func main() {
3928 \tx := 0
3929 \tfor i := 0; i < 10; i++ {
3930 \t\tx++
3931 \t}
3932 }
3933 "};
3934 let buffer = cx.new(|cx| Buffer::local(text, cx));
3935 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3936 let range = buffer.read_with(cx, |buffer, cx| {
3937 let snapshot = buffer.snapshot(cx);
3938 snapshot.anchor_before(Point::new(0, 0))..snapshot.anchor_after(Point::new(4, 2))
3939 });
3940 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3941 let codegen = cx.new(|cx| {
3942 CodegenAlternative::new(
3943 buffer.clone(),
3944 range.clone(),
3945 true,
3946 None,
3947 prompt_builder,
3948 cx,
3949 )
3950 });
3951
3952 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3953 let new_text = concat!(
3954 "func main() {\n",
3955 "\tx := 0\n",
3956 "\tfor x < 10 {\n",
3957 "\t\tx++\n",
3958 "\t}", //
3959 );
3960 chunks_tx.unbounded_send(new_text.to_string()).unwrap();
3961 drop(chunks_tx);
3962 cx.background_executor.run_until_parked();
3963
3964 assert_eq!(
3965 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3966 indoc! {"
3967 func main() {
3968 \tx := 0
3969 \tfor x < 10 {
3970 \t\tx++
3971 \t}
3972 }
3973 "}
3974 );
3975 }
3976
3977 #[gpui::test]
3978 async fn test_inactive_codegen_alternative(cx: &mut TestAppContext) {
3979 cx.update(LanguageModelRegistry::test);
3980 cx.set_global(cx.update(SettingsStore::test));
3981 cx.update(language_settings::init);
3982
3983 let text = indoc! {"
3984 fn main() {
3985 let x = 0;
3986 }
3987 "};
3988 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3989 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3990 let range = buffer.read_with(cx, |buffer, cx| {
3991 let snapshot = buffer.snapshot(cx);
3992 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(1, 14))
3993 });
3994 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3995 let codegen = cx.new(|cx| {
3996 CodegenAlternative::new(
3997 buffer.clone(),
3998 range.clone(),
3999 false,
4000 None,
4001 prompt_builder,
4002 cx,
4003 )
4004 });
4005
4006 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
4007 chunks_tx
4008 .unbounded_send("let mut x = 0;\nx += 1;".to_string())
4009 .unwrap();
4010 drop(chunks_tx);
4011 cx.run_until_parked();
4012
4013 // The codegen is inactive, so the buffer doesn't get modified.
4014 assert_eq!(
4015 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4016 text
4017 );
4018
4019 // Activating the codegen applies the changes.
4020 codegen.update(cx, |codegen, cx| codegen.set_active(true, cx));
4021 assert_eq!(
4022 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4023 indoc! {"
4024 fn main() {
4025 let mut x = 0;
4026 x += 1;
4027 }
4028 "}
4029 );
4030
4031 // Deactivating the codegen undoes the changes.
4032 codegen.update(cx, |codegen, cx| codegen.set_active(false, cx));
4033 cx.run_until_parked();
4034 assert_eq!(
4035 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4036 text
4037 );
4038 }
4039
4040 #[gpui::test]
4041 async fn test_strip_invalid_spans_from_codeblock() {
4042 assert_chunks("Lorem ipsum dolor", "Lorem ipsum dolor").await;
4043 assert_chunks("```\nLorem ipsum dolor", "Lorem ipsum dolor").await;
4044 assert_chunks("```\nLorem ipsum dolor\n```", "Lorem ipsum dolor").await;
4045 assert_chunks(
4046 "```html\n```js\nLorem ipsum dolor\n```\n```",
4047 "```js\nLorem ipsum dolor\n```",
4048 )
4049 .await;
4050 assert_chunks("``\nLorem ipsum dolor\n```", "``\nLorem ipsum dolor\n```").await;
4051 assert_chunks("Lorem<|CURSOR|> ipsum", "Lorem ipsum").await;
4052 assert_chunks("Lorem ipsum", "Lorem ipsum").await;
4053 assert_chunks("```\n<|CURSOR|>Lorem ipsum\n```", "Lorem ipsum").await;
4054
4055 async fn assert_chunks(text: &str, expected_text: &str) {
4056 for chunk_size in 1..=text.len() {
4057 let actual_text = StripInvalidSpans::new(chunks(text, chunk_size))
4058 .map(|chunk| chunk.unwrap())
4059 .collect::<String>()
4060 .await;
4061 assert_eq!(
4062 actual_text, expected_text,
4063 "failed to strip invalid spans, chunk size: {}",
4064 chunk_size
4065 );
4066 }
4067 }
4068
4069 fn chunks(text: &str, size: usize) -> impl Stream<Item = Result<String>> {
4070 stream::iter(
4071 text.chars()
4072 .collect::<Vec<_>>()
4073 .chunks(size)
4074 .map(|chunk| Ok(chunk.iter().collect::<String>()))
4075 .collect::<Vec<_>>(),
4076 )
4077 }
4078 }
4079
4080 fn simulate_response_stream(
4081 codegen: Entity<CodegenAlternative>,
4082 cx: &mut TestAppContext,
4083 ) -> mpsc::UnboundedSender<String> {
4084 let (chunks_tx, chunks_rx) = mpsc::unbounded();
4085 codegen.update(cx, |codegen, cx| {
4086 codegen.handle_stream(
4087 String::new(),
4088 String::new(),
4089 None,
4090 future::ready(Ok(LanguageModelTextStream {
4091 message_id: None,
4092 stream: chunks_rx.map(Ok).boxed(),
4093 })),
4094 cx,
4095 );
4096 });
4097 chunks_tx
4098 }
4099
4100 fn rust_lang() -> Language {
4101 Language::new(
4102 LanguageConfig {
4103 name: "Rust".into(),
4104 matcher: LanguageMatcher {
4105 path_suffixes: vec!["rs".to_string()],
4106 ..Default::default()
4107 },
4108 ..Default::default()
4109 },
4110 Some(tree_sitter_rust::LANGUAGE.into()),
4111 )
4112 .with_indents_query(
4113 r#"
4114 (call_expression) @indent
4115 (field_expression) @indent
4116 (_ "(" ")" @end) @indent
4117 (_ "{" "}" @end) @indent
4118 "#,
4119 )
4120 .unwrap()
4121 }
4122}