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::{line_diff, Buffer, IndentKind, Point, Selection, TransactionId};
34use language_model::{
35 report_assistant_event, LanguageModel, LanguageModelRegistry, LanguageModelRequest,
36 LanguageModelRequestMessage, LanguageModelTextStream, Role,
37};
38use language_model_selector::{LanguageModelSelector, LanguageModelSelectorPopoverMenu};
39use multi_buffer::MultiBufferRow;
40use parking_lot::Mutex;
41use project::{CodeAction, LspAction, ProjectTransaction};
42use prompt_store::PromptBuilder;
43use rope::Rope;
44use settings::{update_settings_file, Settings, SettingsStore};
45use smol::future::FutureExt;
46use std::{
47 cmp,
48 future::{self, Future},
49 iter, mem,
50 ops::{Range, RangeInclusive},
51 pin::Pin,
52 rc::Rc,
53 sync::Arc,
54 task::{self, Poll},
55 time::{Duration, Instant},
56};
57use streaming_diff::{CharOperation, LineDiff, LineOperation, StreamingDiff};
58use telemetry_events::{AssistantEvent, AssistantKind, AssistantPhase};
59use terminal_view::terminal_panel::TerminalPanel;
60use text::{OffsetRangeExt, ToPoint as _};
61use theme::ThemeSettings;
62use ui::{
63 prelude::*, text_for_action, CheckboxWithLabel, IconButtonShape, KeyBinding, Popover, Tooltip,
64};
65use util::{RangeExt, ResultExt};
66use workspace::{notifications::NotificationId, ItemHandle, Toast, Workspace};
67
68pub fn init(
69 fs: Arc<dyn Fs>,
70 prompt_builder: Arc<PromptBuilder>,
71 telemetry: Arc<Telemetry>,
72 cx: &mut App,
73) {
74 cx.set_global(InlineAssistant::new(fs, prompt_builder, telemetry));
75 cx.observe_new(|_, window, cx| {
76 let Some(window) = window else {
77 return;
78 };
79 let workspace = cx.entity().clone();
80 InlineAssistant::update_global(cx, |inline_assistant, cx| {
81 inline_assistant.register_workspace(&workspace, window, cx)
82 });
83
84 cx.observe_flag::<Assistant2FeatureFlag, _>(window, {
85 |is_assistant2_enabled, _workspace, _window, cx| {
86 InlineAssistant::update_global(cx, |inline_assistant, _cx| {
87 inline_assistant.is_assistant2_enabled = is_assistant2_enabled;
88 });
89 }
90 })
91 .detach();
92 })
93 .detach();
94}
95
96const PROMPT_HISTORY_MAX_LEN: usize = 20;
97
98pub struct InlineAssistant {
99 next_assist_id: InlineAssistId,
100 next_assist_group_id: InlineAssistGroupId,
101 assists: HashMap<InlineAssistId, InlineAssist>,
102 assists_by_editor: HashMap<WeakEntity<Editor>, EditorInlineAssists>,
103 assist_groups: HashMap<InlineAssistGroupId, InlineAssistGroup>,
104 confirmed_assists: HashMap<InlineAssistId, Entity<CodegenAlternative>>,
105 prompt_history: VecDeque<String>,
106 prompt_builder: Arc<PromptBuilder>,
107 telemetry: Arc<Telemetry>,
108 fs: Arc<dyn Fs>,
109 is_assistant2_enabled: bool,
110}
111
112impl Global for InlineAssistant {}
113
114impl InlineAssistant {
115 pub fn new(
116 fs: Arc<dyn Fs>,
117 prompt_builder: Arc<PromptBuilder>,
118 telemetry: Arc<Telemetry>,
119 ) -> Self {
120 Self {
121 next_assist_id: InlineAssistId::default(),
122 next_assist_group_id: InlineAssistGroupId::default(),
123 assists: HashMap::default(),
124 assists_by_editor: HashMap::default(),
125 assist_groups: HashMap::default(),
126 confirmed_assists: HashMap::default(),
127 prompt_history: VecDeque::default(),
128 prompt_builder,
129 telemetry,
130 fs,
131 is_assistant2_enabled: false,
132 }
133 }
134
135 pub fn register_workspace(
136 &mut self,
137 workspace: &Entity<Workspace>,
138 window: &mut Window,
139 cx: &mut App,
140 ) {
141 window
142 .subscribe(workspace, cx, |workspace, event, window, cx| {
143 Self::update_global(cx, |this, cx| {
144 this.handle_workspace_event(workspace, event, window, cx)
145 });
146 })
147 .detach();
148
149 let workspace = workspace.downgrade();
150 cx.observe_global::<SettingsStore>(move |cx| {
151 let Some(workspace) = workspace.upgrade() else {
152 return;
153 };
154 let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {
155 return;
156 };
157 let enabled = AssistantSettings::get_global(cx).enabled;
158 terminal_panel.update(cx, |terminal_panel, cx| {
159 terminal_panel.set_assistant_enabled(enabled, cx)
160 });
161 })
162 .detach();
163 }
164
165 fn handle_workspace_event(
166 &mut self,
167 workspace: Entity<Workspace>,
168 event: &workspace::Event,
169 window: &mut Window,
170 cx: &mut App,
171 ) {
172 match event {
173 workspace::Event::UserSavedItem { item, .. } => {
174 // When the user manually saves an editor, automatically accepts all finished transformations.
175 if let Some(editor) = item.upgrade().and_then(|item| item.act_as::<Editor>(cx)) {
176 if let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) {
177 for assist_id in editor_assists.assist_ids.clone() {
178 let assist = &self.assists[&assist_id];
179 if let CodegenStatus::Done = assist.codegen.read(cx).status(cx) {
180 self.finish_assist(assist_id, false, window, cx)
181 }
182 }
183 }
184 }
185 }
186 workspace::Event::ItemAdded { item } => {
187 self.register_workspace_item(&workspace, item.as_ref(), window, cx);
188 }
189 _ => (),
190 }
191 }
192
193 fn register_workspace_item(
194 &mut self,
195 workspace: &Entity<Workspace>,
196 item: &dyn ItemHandle,
197 window: &mut Window,
198 cx: &mut App,
199 ) {
200 let is_assistant2_enabled = self.is_assistant2_enabled;
201
202 if let Some(editor) = item.act_as::<Editor>(cx) {
203 editor.update(cx, |editor, cx| {
204 if is_assistant2_enabled {
205 editor.remove_code_action_provider(
206 ASSISTANT_CODE_ACTION_PROVIDER_ID.into(),
207 window,
208 cx,
209 );
210 } else {
211 editor.add_code_action_provider(
212 Rc::new(AssistantCodeActionProvider {
213 editor: cx.entity().downgrade(),
214 workspace: workspace.downgrade(),
215 }),
216 window,
217 cx,
218 );
219 }
220 });
221 }
222 }
223
224 pub fn assist(
225 &mut self,
226 editor: &Entity<Editor>,
227 workspace: Option<WeakEntity<Workspace>>,
228 assistant_panel: Option<&Entity<AssistantPanel>>,
229 initial_prompt: Option<String>,
230 window: &mut Window,
231 cx: &mut App,
232 ) {
233 let (snapshot, initial_selections) = editor.update(cx, |editor, cx| {
234 (
235 editor.buffer().read(cx).snapshot(cx),
236 editor.selections.all::<Point>(cx),
237 )
238 });
239
240 let mut selections = Vec::<Selection<Point>>::new();
241 let mut newest_selection = None;
242 for mut selection in initial_selections {
243 if selection.end > selection.start {
244 selection.start.column = 0;
245 // If the selection ends at the start of the line, we don't want to include it.
246 if selection.end.column == 0 {
247 selection.end.row -= 1;
248 }
249 selection.end.column = snapshot.line_len(MultiBufferRow(selection.end.row));
250 }
251
252 if let Some(prev_selection) = selections.last_mut() {
253 if selection.start <= prev_selection.end {
254 prev_selection.end = selection.end;
255 continue;
256 }
257 }
258
259 let latest_selection = newest_selection.get_or_insert_with(|| selection.clone());
260 if selection.id > latest_selection.id {
261 *latest_selection = selection.clone();
262 }
263 selections.push(selection);
264 }
265 let newest_selection = newest_selection.unwrap();
266
267 let mut codegen_ranges = Vec::new();
268 for (buffer, buffer_range, excerpt_id) in
269 snapshot.ranges_to_buffer_ranges(selections.iter().map(|selection| {
270 snapshot.anchor_before(selection.start)..snapshot.anchor_after(selection.end)
271 }))
272 {
273 let start = buffer.anchor_before(buffer_range.start);
274 let end = buffer.anchor_after(buffer_range.end);
275
276 codegen_ranges.push(Anchor::range_in_buffer(
277 excerpt_id,
278 buffer.remote_id(),
279 start..end,
280 ));
281
282 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
283 self.telemetry.report_assistant_event(AssistantEvent {
284 conversation_id: None,
285 kind: AssistantKind::Inline,
286 phase: AssistantPhase::Invoked,
287 message_id: None,
288 model: model.telemetry_id(),
289 model_provider: model.provider_id().to_string(),
290 response_latency: None,
291 error_message: None,
292 language_name: buffer.language().map(|language| language.name().to_proto()),
293 });
294 }
295 }
296
297 let assist_group_id = self.next_assist_group_id.post_inc();
298 let prompt_buffer = cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx));
299 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
300
301 let mut assists = Vec::new();
302 let mut assist_to_focus = None;
303 for range in codegen_ranges {
304 let assist_id = self.next_assist_id.post_inc();
305 let codegen = cx.new(|cx| {
306 Codegen::new(
307 editor.read(cx).buffer().clone(),
308 range.clone(),
309 None,
310 self.telemetry.clone(),
311 self.prompt_builder.clone(),
312 cx,
313 )
314 });
315
316 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
317 let prompt_editor = cx.new(|cx| {
318 PromptEditor::new(
319 assist_id,
320 gutter_dimensions.clone(),
321 self.prompt_history.clone(),
322 prompt_buffer.clone(),
323 codegen.clone(),
324 editor,
325 assistant_panel,
326 workspace.clone(),
327 self.fs.clone(),
328 window,
329 cx,
330 )
331 });
332
333 if assist_to_focus.is_none() {
334 let focus_assist = if newest_selection.reversed {
335 range.start.to_point(&snapshot) == newest_selection.start
336 } else {
337 range.end.to_point(&snapshot) == newest_selection.end
338 };
339 if focus_assist {
340 assist_to_focus = Some(assist_id);
341 }
342 }
343
344 let [prompt_block_id, end_block_id] =
345 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
346
347 assists.push((
348 assist_id,
349 range,
350 prompt_editor,
351 prompt_block_id,
352 end_block_id,
353 ));
354 }
355
356 let editor_assists = self
357 .assists_by_editor
358 .entry(editor.downgrade())
359 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
360 let mut assist_group = InlineAssistGroup::new();
361 for (assist_id, range, prompt_editor, prompt_block_id, end_block_id) in assists {
362 self.assists.insert(
363 assist_id,
364 InlineAssist::new(
365 assist_id,
366 assist_group_id,
367 assistant_panel.is_some(),
368 editor,
369 &prompt_editor,
370 prompt_block_id,
371 end_block_id,
372 range,
373 prompt_editor.read(cx).codegen.clone(),
374 workspace.clone(),
375 window,
376 cx,
377 ),
378 );
379 assist_group.assist_ids.push(assist_id);
380 editor_assists.assist_ids.push(assist_id);
381 }
382 self.assist_groups.insert(assist_group_id, assist_group);
383
384 if let Some(assist_id) = assist_to_focus {
385 self.focus_assist(assist_id, window, cx);
386 }
387 }
388
389 pub fn suggest_assist(
390 &mut self,
391 editor: &Entity<Editor>,
392 mut range: Range<Anchor>,
393 initial_prompt: String,
394 initial_transaction_id: Option<TransactionId>,
395 focus: bool,
396 workspace: Option<WeakEntity<Workspace>>,
397 assistant_panel: Option<&Entity<AssistantPanel>>,
398 window: &mut Window,
399 cx: &mut App,
400 ) -> InlineAssistId {
401 let assist_group_id = self.next_assist_group_id.post_inc();
402 let prompt_buffer = cx.new(|cx| Buffer::local(&initial_prompt, cx));
403 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
404
405 let assist_id = self.next_assist_id.post_inc();
406
407 let buffer = editor.read(cx).buffer().clone();
408 {
409 let snapshot = buffer.read(cx).read(cx);
410 range.start = range.start.bias_left(&snapshot);
411 range.end = range.end.bias_right(&snapshot);
412 }
413
414 let codegen = cx.new(|cx| {
415 Codegen::new(
416 editor.read(cx).buffer().clone(),
417 range.clone(),
418 initial_transaction_id,
419 self.telemetry.clone(),
420 self.prompt_builder.clone(),
421 cx,
422 )
423 });
424
425 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
426 let prompt_editor = cx.new(|cx| {
427 PromptEditor::new(
428 assist_id,
429 gutter_dimensions.clone(),
430 self.prompt_history.clone(),
431 prompt_buffer.clone(),
432 codegen.clone(),
433 editor,
434 assistant_panel,
435 workspace.clone(),
436 self.fs.clone(),
437 window,
438 cx,
439 )
440 });
441
442 let [prompt_block_id, end_block_id] =
443 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
444
445 let editor_assists = self
446 .assists_by_editor
447 .entry(editor.downgrade())
448 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
449
450 let mut assist_group = InlineAssistGroup::new();
451 self.assists.insert(
452 assist_id,
453 InlineAssist::new(
454 assist_id,
455 assist_group_id,
456 assistant_panel.is_some(),
457 editor,
458 &prompt_editor,
459 prompt_block_id,
460 end_block_id,
461 range,
462 prompt_editor.read(cx).codegen.clone(),
463 workspace.clone(),
464 window,
465 cx,
466 ),
467 );
468 assist_group.assist_ids.push(assist_id);
469 editor_assists.assist_ids.push(assist_id);
470 self.assist_groups.insert(assist_group_id, assist_group);
471
472 if focus {
473 self.focus_assist(assist_id, window, cx);
474 }
475
476 assist_id
477 }
478
479 fn insert_assist_blocks(
480 &self,
481 editor: &Entity<Editor>,
482 range: &Range<Anchor>,
483 prompt_editor: &Entity<PromptEditor>,
484 cx: &mut App,
485 ) -> [CustomBlockId; 2] {
486 let prompt_editor_height = prompt_editor.update(cx, |prompt_editor, cx| {
487 prompt_editor
488 .editor
489 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1 + 2)
490 });
491 let assist_blocks = vec![
492 BlockProperties {
493 style: BlockStyle::Sticky,
494 placement: BlockPlacement::Above(range.start),
495 height: prompt_editor_height,
496 render: build_assist_editor_renderer(prompt_editor),
497 priority: 0,
498 },
499 BlockProperties {
500 style: BlockStyle::Sticky,
501 placement: BlockPlacement::Below(range.end),
502 height: 0,
503 render: Arc::new(|cx| {
504 v_flex()
505 .h_full()
506 .w_full()
507 .border_t_1()
508 .border_color(cx.theme().status().info_border)
509 .into_any_element()
510 }),
511 priority: 0,
512 },
513 ];
514
515 editor.update(cx, |editor, cx| {
516 let block_ids = editor.insert_blocks(assist_blocks, None, cx);
517 [block_ids[0], block_ids[1]]
518 })
519 }
520
521 fn handle_prompt_editor_focus_in(&mut self, assist_id: InlineAssistId, cx: &mut App) {
522 let assist = &self.assists[&assist_id];
523 let Some(decorations) = assist.decorations.as_ref() else {
524 return;
525 };
526 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
527 let editor_assists = self.assists_by_editor.get_mut(&assist.editor).unwrap();
528
529 assist_group.active_assist_id = Some(assist_id);
530 if assist_group.linked {
531 for assist_id in &assist_group.assist_ids {
532 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
533 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
534 prompt_editor.set_show_cursor_when_unfocused(true, cx)
535 });
536 }
537 }
538 }
539
540 assist
541 .editor
542 .update(cx, |editor, cx| {
543 let scroll_top = editor.scroll_position(cx).y;
544 let scroll_bottom = scroll_top + editor.visible_line_count().unwrap_or(0.);
545 let prompt_row = editor
546 .row_for_block(decorations.prompt_block_id, cx)
547 .unwrap()
548 .0 as f32;
549
550 if (scroll_top..scroll_bottom).contains(&prompt_row) {
551 editor_assists.scroll_lock = Some(InlineAssistScrollLock {
552 assist_id,
553 distance_from_top: prompt_row - scroll_top,
554 });
555 } else {
556 editor_assists.scroll_lock = None;
557 }
558 })
559 .ok();
560 }
561
562 fn handle_prompt_editor_focus_out(&mut self, assist_id: InlineAssistId, cx: &mut App) {
563 let assist = &self.assists[&assist_id];
564 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
565 if assist_group.active_assist_id == Some(assist_id) {
566 assist_group.active_assist_id = None;
567 if assist_group.linked {
568 for assist_id in &assist_group.assist_ids {
569 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
570 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
571 prompt_editor.set_show_cursor_when_unfocused(false, cx)
572 });
573 }
574 }
575 }
576 }
577 }
578
579 fn handle_prompt_editor_event(
580 &mut self,
581 prompt_editor: Entity<PromptEditor>,
582 event: &PromptEditorEvent,
583 window: &mut Window,
584 cx: &mut App,
585 ) {
586 let assist_id = prompt_editor.read(cx).id;
587 match event {
588 PromptEditorEvent::StartRequested => {
589 self.start_assist(assist_id, window, cx);
590 }
591 PromptEditorEvent::StopRequested => {
592 self.stop_assist(assist_id, cx);
593 }
594 PromptEditorEvent::ConfirmRequested => {
595 self.finish_assist(assist_id, false, window, cx);
596 }
597 PromptEditorEvent::CancelRequested => {
598 self.finish_assist(assist_id, true, window, cx);
599 }
600 PromptEditorEvent::DismissRequested => {
601 self.dismiss_assist(assist_id, window, cx);
602 }
603 }
604 }
605
606 fn handle_editor_newline(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
607 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
608 return;
609 };
610
611 if editor.read(cx).selections.count() == 1 {
612 let (selection, buffer) = editor.update(cx, |editor, cx| {
613 (
614 editor.selections.newest::<usize>(cx),
615 editor.buffer().read(cx).snapshot(cx),
616 )
617 });
618 for assist_id in &editor_assists.assist_ids {
619 let assist = &self.assists[assist_id];
620 let assist_range = assist.range.to_offset(&buffer);
621 if assist_range.contains(&selection.start) && assist_range.contains(&selection.end)
622 {
623 if matches!(assist.codegen.read(cx).status(cx), CodegenStatus::Pending) {
624 self.dismiss_assist(*assist_id, window, cx);
625 } else {
626 self.finish_assist(*assist_id, false, window, cx);
627 }
628
629 return;
630 }
631 }
632 }
633
634 cx.propagate();
635 }
636
637 fn handle_editor_cancel(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
638 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
639 return;
640 };
641
642 if editor.read(cx).selections.count() == 1 {
643 let (selection, buffer) = editor.update(cx, |editor, cx| {
644 (
645 editor.selections.newest::<usize>(cx),
646 editor.buffer().read(cx).snapshot(cx),
647 )
648 });
649 let mut closest_assist_fallback = None;
650 for assist_id in &editor_assists.assist_ids {
651 let assist = &self.assists[assist_id];
652 let assist_range = assist.range.to_offset(&buffer);
653 if assist.decorations.is_some() {
654 if assist_range.contains(&selection.start)
655 && assist_range.contains(&selection.end)
656 {
657 self.focus_assist(*assist_id, window, cx);
658 return;
659 } else {
660 let distance_from_selection = assist_range
661 .start
662 .abs_diff(selection.start)
663 .min(assist_range.start.abs_diff(selection.end))
664 + assist_range
665 .end
666 .abs_diff(selection.start)
667 .min(assist_range.end.abs_diff(selection.end));
668 match closest_assist_fallback {
669 Some((_, old_distance)) => {
670 if distance_from_selection < old_distance {
671 closest_assist_fallback =
672 Some((assist_id, distance_from_selection));
673 }
674 }
675 None => {
676 closest_assist_fallback = Some((assist_id, distance_from_selection))
677 }
678 }
679 }
680 }
681 }
682
683 if let Some((&assist_id, _)) = closest_assist_fallback {
684 self.focus_assist(assist_id, window, cx);
685 }
686 }
687
688 cx.propagate();
689 }
690
691 fn handle_editor_release(
692 &mut self,
693 editor: WeakEntity<Editor>,
694 window: &mut Window,
695 cx: &mut App,
696 ) {
697 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor) {
698 for assist_id in editor_assists.assist_ids.clone() {
699 self.finish_assist(assist_id, true, window, cx);
700 }
701 }
702 }
703
704 fn handle_editor_change(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
705 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
706 return;
707 };
708 let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() else {
709 return;
710 };
711 let assist = &self.assists[&scroll_lock.assist_id];
712 let Some(decorations) = assist.decorations.as_ref() else {
713 return;
714 };
715
716 editor.update(cx, |editor, cx| {
717 let scroll_position = editor.scroll_position(cx);
718 let target_scroll_top = editor
719 .row_for_block(decorations.prompt_block_id, cx)
720 .unwrap()
721 .0 as f32
722 - scroll_lock.distance_from_top;
723 if target_scroll_top != scroll_position.y {
724 editor.set_scroll_position(point(scroll_position.x, target_scroll_top), window, cx);
725 }
726 });
727 }
728
729 fn handle_editor_event(
730 &mut self,
731 editor: Entity<Editor>,
732 event: &EditorEvent,
733 window: &mut Window,
734 cx: &mut App,
735 ) {
736 let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) else {
737 return;
738 };
739
740 match event {
741 EditorEvent::Edited { transaction_id } => {
742 let buffer = editor.read(cx).buffer().read(cx);
743 let edited_ranges =
744 buffer.edited_ranges_for_transaction::<usize>(*transaction_id, cx);
745 let snapshot = buffer.snapshot(cx);
746
747 for assist_id in editor_assists.assist_ids.clone() {
748 let assist = &self.assists[&assist_id];
749 if matches!(
750 assist.codegen.read(cx).status(cx),
751 CodegenStatus::Error(_) | CodegenStatus::Done
752 ) {
753 let assist_range = assist.range.to_offset(&snapshot);
754 if edited_ranges
755 .iter()
756 .any(|range| range.overlaps(&assist_range))
757 {
758 self.finish_assist(assist_id, false, window, cx);
759 }
760 }
761 }
762 }
763 EditorEvent::ScrollPositionChanged { .. } => {
764 if let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() {
765 let assist = &self.assists[&scroll_lock.assist_id];
766 if let Some(decorations) = assist.decorations.as_ref() {
767 let distance_from_top = editor.update(cx, |editor, cx| {
768 let scroll_top = editor.scroll_position(cx).y;
769 let prompt_row = editor
770 .row_for_block(decorations.prompt_block_id, cx)
771 .unwrap()
772 .0 as f32;
773 prompt_row - scroll_top
774 });
775
776 if distance_from_top != scroll_lock.distance_from_top {
777 editor_assists.scroll_lock = None;
778 }
779 }
780 }
781 }
782 EditorEvent::SelectionsChanged { .. } => {
783 for assist_id in editor_assists.assist_ids.clone() {
784 let assist = &self.assists[&assist_id];
785 if let Some(decorations) = assist.decorations.as_ref() {
786 if decorations
787 .prompt_editor
788 .focus_handle(cx)
789 .is_focused(window)
790 {
791 return;
792 }
793 }
794 }
795
796 editor_assists.scroll_lock = None;
797 }
798 _ => {}
799 }
800 }
801
802 pub fn finish_assist(
803 &mut self,
804 assist_id: InlineAssistId,
805 undo: bool,
806 window: &mut Window,
807 cx: &mut App,
808 ) {
809 if let Some(assist) = self.assists.get(&assist_id) {
810 let assist_group_id = assist.group_id;
811 if self.assist_groups[&assist_group_id].linked {
812 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
813 self.finish_assist(assist_id, undo, window, cx);
814 }
815 return;
816 }
817 }
818
819 self.dismiss_assist(assist_id, window, cx);
820
821 if let Some(assist) = self.assists.remove(&assist_id) {
822 if let hash_map::Entry::Occupied(mut entry) = self.assist_groups.entry(assist.group_id)
823 {
824 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
825 if entry.get().assist_ids.is_empty() {
826 entry.remove();
827 }
828 }
829
830 if let hash_map::Entry::Occupied(mut entry) =
831 self.assists_by_editor.entry(assist.editor.clone())
832 {
833 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
834 if entry.get().assist_ids.is_empty() {
835 entry.remove();
836 if let Some(editor) = assist.editor.upgrade() {
837 self.update_editor_highlights(&editor, cx);
838 }
839 } else {
840 entry.get().highlight_updates.send(()).ok();
841 }
842 }
843
844 let active_alternative = assist.codegen.read(cx).active_alternative().clone();
845 let message_id = active_alternative.read(cx).message_id.clone();
846
847 if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {
848 let language_name = assist.editor.upgrade().and_then(|editor| {
849 let multibuffer = editor.read(cx).buffer().read(cx);
850 let multibuffer_snapshot = multibuffer.snapshot(cx);
851 let ranges = multibuffer_snapshot.range_to_buffer_ranges(assist.range.clone());
852 ranges
853 .first()
854 .and_then(|(buffer, _, _)| buffer.language())
855 .map(|language| language.name())
856 });
857 report_assistant_event(
858 AssistantEvent {
859 conversation_id: None,
860 kind: AssistantKind::Inline,
861 message_id,
862 phase: if undo {
863 AssistantPhase::Rejected
864 } else {
865 AssistantPhase::Accepted
866 },
867 model: model.telemetry_id(),
868 model_provider: model.provider_id().to_string(),
869 response_latency: None,
870 error_message: None,
871 language_name: language_name.map(|name| name.to_proto()),
872 },
873 Some(self.telemetry.clone()),
874 cx.http_client(),
875 model.api_key(cx),
876 cx.background_executor(),
877 );
878 }
879
880 if undo {
881 assist.codegen.update(cx, |codegen, cx| codegen.undo(cx));
882 } else {
883 self.confirmed_assists.insert(assist_id, active_alternative);
884 }
885 }
886 }
887
888 fn dismiss_assist(
889 &mut self,
890 assist_id: InlineAssistId,
891 window: &mut Window,
892 cx: &mut App,
893 ) -> bool {
894 let Some(assist) = self.assists.get_mut(&assist_id) else {
895 return false;
896 };
897 let Some(editor) = assist.editor.upgrade() else {
898 return false;
899 };
900 let Some(decorations) = assist.decorations.take() else {
901 return false;
902 };
903
904 editor.update(cx, |editor, cx| {
905 let mut to_remove = decorations.removed_line_block_ids;
906 to_remove.insert(decorations.prompt_block_id);
907 to_remove.insert(decorations.end_block_id);
908 editor.remove_blocks(to_remove, None, cx);
909 });
910
911 if decorations
912 .prompt_editor
913 .focus_handle(cx)
914 .contains_focused(window, cx)
915 {
916 self.focus_next_assist(assist_id, window, cx);
917 }
918
919 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) {
920 if editor_assists
921 .scroll_lock
922 .as_ref()
923 .map_or(false, |lock| lock.assist_id == assist_id)
924 {
925 editor_assists.scroll_lock = None;
926 }
927 editor_assists.highlight_updates.send(()).ok();
928 }
929
930 true
931 }
932
933 fn focus_next_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
934 let Some(assist) = self.assists.get(&assist_id) else {
935 return;
936 };
937
938 let assist_group = &self.assist_groups[&assist.group_id];
939 let assist_ix = assist_group
940 .assist_ids
941 .iter()
942 .position(|id| *id == assist_id)
943 .unwrap();
944 let assist_ids = assist_group
945 .assist_ids
946 .iter()
947 .skip(assist_ix + 1)
948 .chain(assist_group.assist_ids.iter().take(assist_ix));
949
950 for assist_id in assist_ids {
951 let assist = &self.assists[assist_id];
952 if assist.decorations.is_some() {
953 self.focus_assist(*assist_id, window, cx);
954 return;
955 }
956 }
957
958 assist
959 .editor
960 .update(cx, |editor, cx| window.focus(&editor.focus_handle(cx)))
961 .ok();
962 }
963
964 fn focus_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
965 let Some(assist) = self.assists.get(&assist_id) else {
966 return;
967 };
968
969 if let Some(decorations) = assist.decorations.as_ref() {
970 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
971 prompt_editor.editor.update(cx, |editor, cx| {
972 window.focus(&editor.focus_handle(cx));
973 editor.select_all(&SelectAll, window, cx);
974 })
975 });
976 }
977
978 self.scroll_to_assist(assist_id, window, cx);
979 }
980
981 pub fn scroll_to_assist(
982 &mut self,
983 assist_id: InlineAssistId,
984 window: &mut Window,
985 cx: &mut App,
986 ) {
987 let Some(assist) = self.assists.get(&assist_id) else {
988 return;
989 };
990 let Some(editor) = assist.editor.upgrade() else {
991 return;
992 };
993
994 let position = assist.range.start;
995 editor.update(cx, |editor, cx| {
996 editor.change_selections(None, window, cx, |selections| {
997 selections.select_anchor_ranges([position..position])
998 });
999
1000 let mut scroll_target_top;
1001 let mut scroll_target_bottom;
1002 if let Some(decorations) = assist.decorations.as_ref() {
1003 scroll_target_top = editor
1004 .row_for_block(decorations.prompt_block_id, cx)
1005 .unwrap()
1006 .0 as f32;
1007 scroll_target_bottom = editor
1008 .row_for_block(decorations.end_block_id, cx)
1009 .unwrap()
1010 .0 as f32;
1011 } else {
1012 let snapshot = editor.snapshot(window, cx);
1013 let start_row = assist
1014 .range
1015 .start
1016 .to_display_point(&snapshot.display_snapshot)
1017 .row();
1018 scroll_target_top = start_row.0 as f32;
1019 scroll_target_bottom = scroll_target_top + 1.;
1020 }
1021 scroll_target_top -= editor.vertical_scroll_margin() as f32;
1022 scroll_target_bottom += editor.vertical_scroll_margin() as f32;
1023
1024 let height_in_lines = editor.visible_line_count().unwrap_or(0.);
1025 let scroll_top = editor.scroll_position(cx).y;
1026 let scroll_bottom = scroll_top + height_in_lines;
1027
1028 if scroll_target_top < scroll_top {
1029 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1030 } else if scroll_target_bottom > scroll_bottom {
1031 if (scroll_target_bottom - scroll_target_top) <= height_in_lines {
1032 editor.set_scroll_position(
1033 point(0., scroll_target_bottom - height_in_lines),
1034 window,
1035 cx,
1036 );
1037 } else {
1038 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1039 }
1040 }
1041 });
1042 }
1043
1044 fn unlink_assist_group(
1045 &mut self,
1046 assist_group_id: InlineAssistGroupId,
1047 window: &mut Window,
1048 cx: &mut App,
1049 ) -> Vec<InlineAssistId> {
1050 let assist_group = self.assist_groups.get_mut(&assist_group_id).unwrap();
1051 assist_group.linked = false;
1052 for assist_id in &assist_group.assist_ids {
1053 let assist = self.assists.get_mut(assist_id).unwrap();
1054 if let Some(editor_decorations) = assist.decorations.as_ref() {
1055 editor_decorations
1056 .prompt_editor
1057 .update(cx, |prompt_editor, cx| prompt_editor.unlink(window, cx));
1058 }
1059 }
1060 assist_group.assist_ids.clone()
1061 }
1062
1063 pub fn start_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
1064 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1065 assist
1066 } else {
1067 return;
1068 };
1069
1070 let assist_group_id = assist.group_id;
1071 if self.assist_groups[&assist_group_id].linked {
1072 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
1073 self.start_assist(assist_id, window, cx);
1074 }
1075 return;
1076 }
1077
1078 let Some(user_prompt) = assist.user_prompt(cx) else {
1079 return;
1080 };
1081
1082 self.prompt_history.retain(|prompt| *prompt != user_prompt);
1083 self.prompt_history.push_back(user_prompt.clone());
1084 if self.prompt_history.len() > PROMPT_HISTORY_MAX_LEN {
1085 self.prompt_history.pop_front();
1086 }
1087
1088 let assistant_panel_context = assist.assistant_panel_context(cx);
1089
1090 assist
1091 .codegen
1092 .update(cx, |codegen, cx| {
1093 codegen.start(user_prompt, assistant_panel_context, cx)
1094 })
1095 .log_err();
1096 }
1097
1098 pub fn stop_assist(&mut self, assist_id: InlineAssistId, cx: &mut App) {
1099 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1100 assist
1101 } else {
1102 return;
1103 };
1104
1105 assist.codegen.update(cx, |codegen, cx| codegen.stop(cx));
1106 }
1107
1108 fn update_editor_highlights(&self, editor: &Entity<Editor>, cx: &mut App) {
1109 let mut gutter_pending_ranges = Vec::new();
1110 let mut gutter_transformed_ranges = Vec::new();
1111 let mut foreground_ranges = Vec::new();
1112 let mut inserted_row_ranges = Vec::new();
1113 let empty_assist_ids = Vec::new();
1114 let assist_ids = self
1115 .assists_by_editor
1116 .get(&editor.downgrade())
1117 .map_or(&empty_assist_ids, |editor_assists| {
1118 &editor_assists.assist_ids
1119 });
1120
1121 for assist_id in assist_ids {
1122 if let Some(assist) = self.assists.get(assist_id) {
1123 let codegen = assist.codegen.read(cx);
1124 let buffer = codegen.buffer(cx).read(cx).read(cx);
1125 foreground_ranges.extend(codegen.last_equal_ranges(cx).iter().cloned());
1126
1127 let pending_range =
1128 codegen.edit_position(cx).unwrap_or(assist.range.start)..assist.range.end;
1129 if pending_range.end.to_offset(&buffer) > pending_range.start.to_offset(&buffer) {
1130 gutter_pending_ranges.push(pending_range);
1131 }
1132
1133 if let Some(edit_position) = codegen.edit_position(cx) {
1134 let edited_range = assist.range.start..edit_position;
1135 if edited_range.end.to_offset(&buffer) > edited_range.start.to_offset(&buffer) {
1136 gutter_transformed_ranges.push(edited_range);
1137 }
1138 }
1139
1140 if assist.decorations.is_some() {
1141 inserted_row_ranges
1142 .extend(codegen.diff(cx).inserted_row_ranges.iter().cloned());
1143 }
1144 }
1145 }
1146
1147 let snapshot = editor.read(cx).buffer().read(cx).snapshot(cx);
1148 merge_ranges(&mut foreground_ranges, &snapshot);
1149 merge_ranges(&mut gutter_pending_ranges, &snapshot);
1150 merge_ranges(&mut gutter_transformed_ranges, &snapshot);
1151 editor.update(cx, |editor, cx| {
1152 enum GutterPendingRange {}
1153 if gutter_pending_ranges.is_empty() {
1154 editor.clear_gutter_highlights::<GutterPendingRange>(cx);
1155 } else {
1156 editor.highlight_gutter::<GutterPendingRange>(
1157 &gutter_pending_ranges,
1158 |cx| cx.theme().status().info_background,
1159 cx,
1160 )
1161 }
1162
1163 enum GutterTransformedRange {}
1164 if gutter_transformed_ranges.is_empty() {
1165 editor.clear_gutter_highlights::<GutterTransformedRange>(cx);
1166 } else {
1167 editor.highlight_gutter::<GutterTransformedRange>(
1168 &gutter_transformed_ranges,
1169 |cx| cx.theme().status().info,
1170 cx,
1171 )
1172 }
1173
1174 if foreground_ranges.is_empty() {
1175 editor.clear_highlights::<InlineAssist>(cx);
1176 } else {
1177 editor.highlight_text::<InlineAssist>(
1178 foreground_ranges,
1179 HighlightStyle {
1180 fade_out: Some(0.6),
1181 ..Default::default()
1182 },
1183 cx,
1184 );
1185 }
1186
1187 editor.clear_row_highlights::<InlineAssist>();
1188 for row_range in inserted_row_ranges {
1189 editor.highlight_rows::<InlineAssist>(
1190 row_range,
1191 cx.theme().status().info_background,
1192 false,
1193 cx,
1194 );
1195 }
1196 });
1197 }
1198
1199 fn update_editor_blocks(
1200 &mut self,
1201 editor: &Entity<Editor>,
1202 assist_id: InlineAssistId,
1203 window: &mut Window,
1204 cx: &mut App,
1205 ) {
1206 let Some(assist) = self.assists.get_mut(&assist_id) else {
1207 return;
1208 };
1209 let Some(decorations) = assist.decorations.as_mut() else {
1210 return;
1211 };
1212
1213 let codegen = assist.codegen.read(cx);
1214 let old_snapshot = codegen.snapshot(cx);
1215 let old_buffer = codegen.old_buffer(cx);
1216 let deleted_row_ranges = codegen.diff(cx).deleted_row_ranges.clone();
1217
1218 editor.update(cx, |editor, cx| {
1219 let old_blocks = mem::take(&mut decorations.removed_line_block_ids);
1220 editor.remove_blocks(old_blocks, None, cx);
1221
1222 let mut new_blocks = Vec::new();
1223 for (new_row, old_row_range) in deleted_row_ranges {
1224 let (_, buffer_start) = old_snapshot
1225 .point_to_buffer_offset(Point::new(*old_row_range.start(), 0))
1226 .unwrap();
1227 let (_, buffer_end) = old_snapshot
1228 .point_to_buffer_offset(Point::new(
1229 *old_row_range.end(),
1230 old_snapshot.line_len(MultiBufferRow(*old_row_range.end())),
1231 ))
1232 .unwrap();
1233
1234 let deleted_lines_editor = cx.new(|cx| {
1235 let multi_buffer =
1236 cx.new(|_| MultiBuffer::without_headers(language::Capability::ReadOnly));
1237 multi_buffer.update(cx, |multi_buffer, cx| {
1238 multi_buffer.push_excerpts(
1239 old_buffer.clone(),
1240 Some(ExcerptRange {
1241 context: buffer_start..buffer_end,
1242 primary: None,
1243 }),
1244 cx,
1245 );
1246 });
1247
1248 enum DeletedLines {}
1249 let mut editor = Editor::for_multibuffer(multi_buffer, None, true, window, cx);
1250 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::None, cx);
1251 editor.set_show_wrap_guides(false, cx);
1252 editor.set_show_gutter(false, cx);
1253 editor.scroll_manager.set_forbid_vertical_scroll(true);
1254 editor.set_show_scrollbars(false, cx);
1255 editor.set_read_only(true);
1256 editor.set_show_edit_predictions(Some(false), window, cx);
1257 editor.highlight_rows::<DeletedLines>(
1258 Anchor::min()..Anchor::max(),
1259 cx.theme().status().deleted_background,
1260 false,
1261 cx,
1262 );
1263 editor
1264 });
1265
1266 let height =
1267 deleted_lines_editor.update(cx, |editor, cx| editor.max_point(cx).row().0 + 1);
1268 new_blocks.push(BlockProperties {
1269 placement: BlockPlacement::Above(new_row),
1270 height,
1271 style: BlockStyle::Flex,
1272 render: Arc::new(move |cx| {
1273 div()
1274 .block_mouse_down()
1275 .bg(cx.theme().status().deleted_background)
1276 .size_full()
1277 .h(height as f32 * cx.window.line_height())
1278 .pl(cx.gutter_dimensions.full_width())
1279 .child(deleted_lines_editor.clone())
1280 .into_any_element()
1281 }),
1282 priority: 0,
1283 });
1284 }
1285
1286 decorations.removed_line_block_ids = editor
1287 .insert_blocks(new_blocks, None, cx)
1288 .into_iter()
1289 .collect();
1290 })
1291 }
1292}
1293
1294struct EditorInlineAssists {
1295 assist_ids: Vec<InlineAssistId>,
1296 scroll_lock: Option<InlineAssistScrollLock>,
1297 highlight_updates: async_watch::Sender<()>,
1298 _update_highlights: Task<Result<()>>,
1299 _subscriptions: Vec<gpui::Subscription>,
1300}
1301
1302struct InlineAssistScrollLock {
1303 assist_id: InlineAssistId,
1304 distance_from_top: f32,
1305}
1306
1307impl EditorInlineAssists {
1308 fn new(editor: &Entity<Editor>, window: &mut Window, cx: &mut App) -> Self {
1309 let (highlight_updates_tx, mut highlight_updates_rx) = async_watch::channel(());
1310 Self {
1311 assist_ids: Vec::new(),
1312 scroll_lock: None,
1313 highlight_updates: highlight_updates_tx,
1314 _update_highlights: cx.spawn(|cx| {
1315 let editor = editor.downgrade();
1316 async move {
1317 while let Ok(()) = highlight_updates_rx.changed().await {
1318 let editor = editor.upgrade().context("editor was dropped")?;
1319 cx.update_global(|assistant: &mut InlineAssistant, cx| {
1320 assistant.update_editor_highlights(&editor, cx);
1321 })?;
1322 }
1323 Ok(())
1324 }
1325 }),
1326 _subscriptions: vec![
1327 cx.observe_release_in(editor, window, {
1328 let editor = editor.downgrade();
1329 |_, window, cx| {
1330 InlineAssistant::update_global(cx, |this, cx| {
1331 this.handle_editor_release(editor, window, cx);
1332 })
1333 }
1334 }),
1335 window.observe(editor, cx, move |editor, window, cx| {
1336 InlineAssistant::update_global(cx, |this, cx| {
1337 this.handle_editor_change(editor, window, cx)
1338 })
1339 }),
1340 window.subscribe(editor, cx, move |editor, event, window, cx| {
1341 InlineAssistant::update_global(cx, |this, cx| {
1342 this.handle_editor_event(editor, event, window, cx)
1343 })
1344 }),
1345 editor.update(cx, |editor, cx| {
1346 let editor_handle = cx.entity().downgrade();
1347 editor.register_action(move |_: &editor::actions::Newline, window, cx| {
1348 InlineAssistant::update_global(cx, |this, cx| {
1349 if let Some(editor) = editor_handle.upgrade() {
1350 this.handle_editor_newline(editor, window, cx)
1351 }
1352 })
1353 })
1354 }),
1355 editor.update(cx, |editor, cx| {
1356 let editor_handle = cx.entity().downgrade();
1357 editor.register_action(move |_: &editor::actions::Cancel, window, cx| {
1358 InlineAssistant::update_global(cx, |this, cx| {
1359 if let Some(editor) = editor_handle.upgrade() {
1360 this.handle_editor_cancel(editor, window, cx)
1361 }
1362 })
1363 })
1364 }),
1365 ],
1366 }
1367 }
1368}
1369
1370struct InlineAssistGroup {
1371 assist_ids: Vec<InlineAssistId>,
1372 linked: bool,
1373 active_assist_id: Option<InlineAssistId>,
1374}
1375
1376impl InlineAssistGroup {
1377 fn new() -> Self {
1378 Self {
1379 assist_ids: Vec::new(),
1380 linked: true,
1381 active_assist_id: None,
1382 }
1383 }
1384}
1385
1386fn build_assist_editor_renderer(editor: &Entity<PromptEditor>) -> RenderBlock {
1387 let editor = editor.clone();
1388 Arc::new(move |cx: &mut BlockContext| {
1389 *editor.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
1390 editor.clone().into_any_element()
1391 })
1392}
1393
1394#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1395pub struct InlineAssistId(usize);
1396
1397impl InlineAssistId {
1398 fn post_inc(&mut self) -> InlineAssistId {
1399 let id = *self;
1400 self.0 += 1;
1401 id
1402 }
1403}
1404
1405#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1406struct InlineAssistGroupId(usize);
1407
1408impl InlineAssistGroupId {
1409 fn post_inc(&mut self) -> InlineAssistGroupId {
1410 let id = *self;
1411 self.0 += 1;
1412 id
1413 }
1414}
1415
1416enum PromptEditorEvent {
1417 StartRequested,
1418 StopRequested,
1419 ConfirmRequested,
1420 CancelRequested,
1421 DismissRequested,
1422}
1423
1424struct PromptEditor {
1425 id: InlineAssistId,
1426 editor: Entity<Editor>,
1427 language_model_selector: Entity<LanguageModelSelector>,
1428 edited_since_done: bool,
1429 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1430 prompt_history: VecDeque<String>,
1431 prompt_history_ix: Option<usize>,
1432 pending_prompt: String,
1433 codegen: Entity<Codegen>,
1434 _codegen_subscription: Subscription,
1435 editor_subscriptions: Vec<Subscription>,
1436 pending_token_count: Task<Result<()>>,
1437 token_counts: Option<TokenCounts>,
1438 _token_count_subscriptions: Vec<Subscription>,
1439 workspace: Option<WeakEntity<Workspace>>,
1440 show_rate_limit_notice: bool,
1441}
1442
1443#[derive(Copy, Clone)]
1444pub struct TokenCounts {
1445 total: usize,
1446 assistant_panel: usize,
1447}
1448
1449impl EventEmitter<PromptEditorEvent> for PromptEditor {}
1450
1451impl Render for PromptEditor {
1452 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1453 let gutter_dimensions = *self.gutter_dimensions.lock();
1454 let codegen = self.codegen.read(cx);
1455
1456 let mut buttons = Vec::new();
1457 if codegen.alternative_count(cx) > 1 {
1458 buttons.push(self.render_cycle_controls(cx));
1459 }
1460
1461 let status = codegen.status(cx);
1462 buttons.extend(match status {
1463 CodegenStatus::Idle => {
1464 vec![
1465 IconButton::new("cancel", IconName::Close)
1466 .icon_color(Color::Muted)
1467 .shape(IconButtonShape::Square)
1468 .tooltip(|window, cx| {
1469 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1470 })
1471 .on_click(
1472 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1473 )
1474 .into_any_element(),
1475 IconButton::new("start", IconName::SparkleAlt)
1476 .icon_color(Color::Muted)
1477 .shape(IconButtonShape::Square)
1478 .tooltip(|window, cx| {
1479 Tooltip::for_action("Transform", &menu::Confirm, window, cx)
1480 })
1481 .on_click(
1482 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StartRequested)),
1483 )
1484 .into_any_element(),
1485 ]
1486 }
1487 CodegenStatus::Pending => {
1488 vec![
1489 IconButton::new("cancel", IconName::Close)
1490 .icon_color(Color::Muted)
1491 .shape(IconButtonShape::Square)
1492 .tooltip(Tooltip::text("Cancel Assist"))
1493 .on_click(
1494 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1495 )
1496 .into_any_element(),
1497 IconButton::new("stop", IconName::Stop)
1498 .icon_color(Color::Error)
1499 .shape(IconButtonShape::Square)
1500 .tooltip(|window, cx| {
1501 Tooltip::with_meta(
1502 "Interrupt Transformation",
1503 Some(&menu::Cancel),
1504 "Changes won't be discarded",
1505 window,
1506 cx,
1507 )
1508 })
1509 .on_click(
1510 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StopRequested)),
1511 )
1512 .into_any_element(),
1513 ]
1514 }
1515 CodegenStatus::Error(_) | CodegenStatus::Done => {
1516 let must_rerun =
1517 self.edited_since_done || matches!(status, CodegenStatus::Error(_));
1518 // when accept button isn't visible, then restart maps to confirm
1519 // when accept button is visible, then restart must be mapped to an alternate keyboard shortcut
1520 let restart_key: &dyn gpui::Action = if must_rerun {
1521 &menu::Confirm
1522 } else {
1523 &menu::Restart
1524 };
1525 vec![
1526 IconButton::new("cancel", IconName::Close)
1527 .icon_color(Color::Muted)
1528 .shape(IconButtonShape::Square)
1529 .tooltip(|window, cx| {
1530 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1531 })
1532 .on_click(
1533 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1534 )
1535 .into_any_element(),
1536 IconButton::new("restart", IconName::RotateCw)
1537 .icon_color(Color::Muted)
1538 .shape(IconButtonShape::Square)
1539 .tooltip(|window, cx| {
1540 Tooltip::with_meta(
1541 "Regenerate Transformation",
1542 Some(restart_key),
1543 "Current change will be discarded",
1544 window,
1545 cx,
1546 )
1547 })
1548 .on_click(cx.listener(|_, _, _, cx| {
1549 cx.emit(PromptEditorEvent::StartRequested);
1550 }))
1551 .into_any_element(),
1552 if !must_rerun {
1553 IconButton::new("confirm", IconName::Check)
1554 .icon_color(Color::Info)
1555 .shape(IconButtonShape::Square)
1556 .tooltip(|window, cx| {
1557 Tooltip::for_action("Confirm Assist", &menu::Confirm, window, cx)
1558 })
1559 .on_click(cx.listener(|_, _, _, cx| {
1560 cx.emit(PromptEditorEvent::ConfirmRequested);
1561 }))
1562 .into_any_element()
1563 } else {
1564 div().into_any_element()
1565 },
1566 ]
1567 }
1568 });
1569
1570 h_flex()
1571 .key_context("PromptEditor")
1572 .bg(cx.theme().colors().editor_background)
1573 .block_mouse_down()
1574 .cursor(CursorStyle::Arrow)
1575 .border_y_1()
1576 .border_color(cx.theme().status().info_border)
1577 .size_full()
1578 .py(window.line_height() / 2.5)
1579 .on_action(cx.listener(Self::confirm))
1580 .on_action(cx.listener(Self::cancel))
1581 .on_action(cx.listener(Self::restart))
1582 .on_action(cx.listener(Self::move_up))
1583 .on_action(cx.listener(Self::move_down))
1584 .capture_action(cx.listener(Self::cycle_prev))
1585 .capture_action(cx.listener(Self::cycle_next))
1586 .child(
1587 h_flex()
1588 .w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0))
1589 .justify_center()
1590 .gap_2()
1591 .child(LanguageModelSelectorPopoverMenu::new(
1592 self.language_model_selector.clone(),
1593 IconButton::new("context", IconName::SettingsAlt)
1594 .shape(IconButtonShape::Square)
1595 .icon_size(IconSize::Small)
1596 .icon_color(Color::Muted),
1597 move |window, cx| {
1598 Tooltip::with_meta(
1599 format!(
1600 "Using {}",
1601 LanguageModelRegistry::read_global(cx)
1602 .active_model()
1603 .map(|model| model.name().0)
1604 .unwrap_or_else(|| "No model selected".into()),
1605 ),
1606 None,
1607 "Change Model",
1608 window,
1609 cx,
1610 )
1611 },
1612 gpui::Corner::TopRight,
1613 ))
1614 .map(|el| {
1615 let CodegenStatus::Error(error) = self.codegen.read(cx).status(cx) else {
1616 return el;
1617 };
1618
1619 let error_message = SharedString::from(error.to_string());
1620 if error.error_code() == proto::ErrorCode::RateLimitExceeded
1621 && cx.has_flag::<ZedPro>()
1622 {
1623 el.child(
1624 v_flex()
1625 .child(
1626 IconButton::new("rate-limit-error", IconName::XCircle)
1627 .toggle_state(self.show_rate_limit_notice)
1628 .shape(IconButtonShape::Square)
1629 .icon_size(IconSize::Small)
1630 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
1631 )
1632 .children(self.show_rate_limit_notice.then(|| {
1633 deferred(
1634 anchored()
1635 .position_mode(gpui::AnchoredPositionMode::Local)
1636 .position(point(px(0.), px(24.)))
1637 .anchor(gpui::Corner::TopLeft)
1638 .child(self.render_rate_limit_notice(cx)),
1639 )
1640 })),
1641 )
1642 } else {
1643 el.child(
1644 div()
1645 .id("error")
1646 .tooltip(Tooltip::text(error_message))
1647 .child(
1648 Icon::new(IconName::XCircle)
1649 .size(IconSize::Small)
1650 .color(Color::Error),
1651 ),
1652 )
1653 }
1654 }),
1655 )
1656 .child(div().flex_1().child(self.render_prompt_editor(cx)))
1657 .child(
1658 h_flex()
1659 .gap_2()
1660 .pr_6()
1661 .children(self.render_token_count(cx))
1662 .children(buttons),
1663 )
1664 }
1665}
1666
1667impl Focusable for PromptEditor {
1668 fn focus_handle(&self, cx: &App) -> FocusHandle {
1669 self.editor.focus_handle(cx)
1670 }
1671}
1672
1673impl PromptEditor {
1674 const MAX_LINES: u8 = 8;
1675
1676 fn new(
1677 id: InlineAssistId,
1678 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1679 prompt_history: VecDeque<String>,
1680 prompt_buffer: Entity<MultiBuffer>,
1681 codegen: Entity<Codegen>,
1682 parent_editor: &Entity<Editor>,
1683 assistant_panel: Option<&Entity<AssistantPanel>>,
1684 workspace: Option<WeakEntity<Workspace>>,
1685 fs: Arc<dyn Fs>,
1686 window: &mut Window,
1687 cx: &mut Context<Self>,
1688 ) -> Self {
1689 let prompt_editor = cx.new(|cx| {
1690 let mut editor = Editor::new(
1691 EditorMode::AutoHeight {
1692 max_lines: Self::MAX_LINES as usize,
1693 },
1694 prompt_buffer,
1695 None,
1696 false,
1697 window,
1698 cx,
1699 );
1700 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1701 // Since the prompt editors for all inline assistants are linked,
1702 // always show the cursor (even when it isn't focused) because
1703 // typing in one will make what you typed appear in all of them.
1704 editor.set_show_cursor_when_unfocused(true, cx);
1705 editor.set_placeholder_text(Self::placeholder_text(codegen.read(cx), window, cx), cx);
1706 editor
1707 });
1708
1709 let mut token_count_subscriptions = Vec::new();
1710 token_count_subscriptions.push(cx.subscribe_in(
1711 parent_editor,
1712 window,
1713 Self::handle_parent_editor_event,
1714 ));
1715 if let Some(assistant_panel) = assistant_panel {
1716 token_count_subscriptions.push(cx.subscribe_in(
1717 assistant_panel,
1718 window,
1719 Self::handle_assistant_panel_event,
1720 ));
1721 }
1722
1723 let mut this = Self {
1724 id,
1725 editor: prompt_editor,
1726 language_model_selector: cx.new(|cx| {
1727 let fs = fs.clone();
1728 LanguageModelSelector::new(
1729 move |model, cx| {
1730 update_settings_file::<AssistantSettings>(
1731 fs.clone(),
1732 cx,
1733 move |settings, _| settings.set_model(model.clone()),
1734 );
1735 },
1736 window,
1737 cx,
1738 )
1739 }),
1740 edited_since_done: false,
1741 gutter_dimensions,
1742 prompt_history,
1743 prompt_history_ix: None,
1744 pending_prompt: String::new(),
1745 _codegen_subscription: cx.observe(&codegen, Self::handle_codegen_changed),
1746 editor_subscriptions: Vec::new(),
1747 codegen,
1748 pending_token_count: Task::ready(Ok(())),
1749 token_counts: None,
1750 _token_count_subscriptions: token_count_subscriptions,
1751 workspace,
1752 show_rate_limit_notice: false,
1753 };
1754 this.count_tokens(cx);
1755 this.subscribe_to_editor(window, cx);
1756 this
1757 }
1758
1759 fn subscribe_to_editor(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1760 self.editor_subscriptions.clear();
1761 self.editor_subscriptions.push(cx.subscribe_in(
1762 &self.editor,
1763 window,
1764 Self::handle_prompt_editor_events,
1765 ));
1766 }
1767
1768 fn set_show_cursor_when_unfocused(
1769 &mut self,
1770 show_cursor_when_unfocused: bool,
1771 cx: &mut Context<Self>,
1772 ) {
1773 self.editor.update(cx, |editor, cx| {
1774 editor.set_show_cursor_when_unfocused(show_cursor_when_unfocused, cx)
1775 });
1776 }
1777
1778 fn unlink(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1779 let prompt = self.prompt(cx);
1780 let focus = self.editor.focus_handle(cx).contains_focused(window, cx);
1781 self.editor = cx.new(|cx| {
1782 let mut editor = Editor::auto_height(Self::MAX_LINES as usize, window, cx);
1783 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1784 editor.set_placeholder_text(
1785 Self::placeholder_text(self.codegen.read(cx), window, cx),
1786 cx,
1787 );
1788 editor.set_placeholder_text("Add a prompt…", cx);
1789 editor.set_text(prompt, window, cx);
1790 if focus {
1791 window.focus(&editor.focus_handle(cx));
1792 }
1793 editor
1794 });
1795 self.subscribe_to_editor(window, cx);
1796 }
1797
1798 fn placeholder_text(codegen: &Codegen, window: &Window, cx: &App) -> String {
1799 let context_keybinding = text_for_action(&zed_actions::assistant::ToggleFocus, window, cx)
1800 .map(|keybinding| format!(" • {keybinding} for context"))
1801 .unwrap_or_default();
1802
1803 let action = if codegen.is_insertion {
1804 "Generate"
1805 } else {
1806 "Transform"
1807 };
1808
1809 format!("{action}…{context_keybinding} • ↓↑ for history")
1810 }
1811
1812 fn prompt(&self, cx: &App) -> String {
1813 self.editor.read(cx).text(cx)
1814 }
1815
1816 fn toggle_rate_limit_notice(
1817 &mut self,
1818 _: &ClickEvent,
1819 window: &mut Window,
1820 cx: &mut Context<Self>,
1821 ) {
1822 self.show_rate_limit_notice = !self.show_rate_limit_notice;
1823 if self.show_rate_limit_notice {
1824 window.focus(&self.editor.focus_handle(cx));
1825 }
1826 cx.notify();
1827 }
1828
1829 fn handle_parent_editor_event(
1830 &mut self,
1831 _: &Entity<Editor>,
1832 event: &EditorEvent,
1833 _: &mut Window,
1834 cx: &mut Context<Self>,
1835 ) {
1836 if let EditorEvent::BufferEdited { .. } = event {
1837 self.count_tokens(cx);
1838 }
1839 }
1840
1841 fn handle_assistant_panel_event(
1842 &mut self,
1843 _: &Entity<AssistantPanel>,
1844 event: &AssistantPanelEvent,
1845 _: &mut Window,
1846 cx: &mut Context<Self>,
1847 ) {
1848 let AssistantPanelEvent::ContextEdited { .. } = event;
1849 self.count_tokens(cx);
1850 }
1851
1852 fn count_tokens(&mut self, cx: &mut Context<Self>) {
1853 let assist_id = self.id;
1854 self.pending_token_count = cx.spawn(|this, mut cx| async move {
1855 cx.background_executor().timer(Duration::from_secs(1)).await;
1856 let token_count = cx
1857 .update_global(|inline_assistant: &mut InlineAssistant, cx| {
1858 let assist = inline_assistant
1859 .assists
1860 .get(&assist_id)
1861 .context("assist not found")?;
1862 anyhow::Ok(assist.count_tokens(cx))
1863 })??
1864 .await?;
1865
1866 this.update(&mut cx, |this, cx| {
1867 this.token_counts = Some(token_count);
1868 cx.notify();
1869 })
1870 })
1871 }
1872
1873 fn handle_prompt_editor_events(
1874 &mut self,
1875 _: &Entity<Editor>,
1876 event: &EditorEvent,
1877 window: &mut Window,
1878 cx: &mut Context<Self>,
1879 ) {
1880 match event {
1881 EditorEvent::Edited { .. } => {
1882 if let Some(workspace) = window.root::<Workspace>().flatten() {
1883 workspace.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 }
1894 let prompt = self.editor.read(cx).text(cx);
1895 if self
1896 .prompt_history_ix
1897 .map_or(true, |ix| self.prompt_history[ix] != prompt)
1898 {
1899 self.prompt_history_ix.take();
1900 self.pending_prompt = prompt;
1901 }
1902
1903 self.edited_since_done = true;
1904 cx.notify();
1905 }
1906 EditorEvent::BufferEdited => {
1907 self.count_tokens(cx);
1908 }
1909 EditorEvent::Blurred => {
1910 if self.show_rate_limit_notice {
1911 self.show_rate_limit_notice = false;
1912 cx.notify();
1913 }
1914 }
1915 _ => {}
1916 }
1917 }
1918
1919 fn handle_codegen_changed(&mut self, _: Entity<Codegen>, cx: &mut Context<Self>) {
1920 match self.codegen.read(cx).status(cx) {
1921 CodegenStatus::Idle => {
1922 self.editor
1923 .update(cx, |editor, _| editor.set_read_only(false));
1924 }
1925 CodegenStatus::Pending => {
1926 self.editor
1927 .update(cx, |editor, _| editor.set_read_only(true));
1928 }
1929 CodegenStatus::Done => {
1930 self.edited_since_done = false;
1931 self.editor
1932 .update(cx, |editor, _| editor.set_read_only(false));
1933 }
1934 CodegenStatus::Error(error) => {
1935 if cx.has_flag::<ZedPro>()
1936 && error.error_code() == proto::ErrorCode::RateLimitExceeded
1937 && !dismissed_rate_limit_notice()
1938 {
1939 self.show_rate_limit_notice = true;
1940 cx.notify();
1941 }
1942
1943 self.edited_since_done = false;
1944 self.editor
1945 .update(cx, |editor, _| editor.set_read_only(false));
1946 }
1947 }
1948 }
1949
1950 fn restart(&mut self, _: &menu::Restart, _window: &mut Window, cx: &mut Context<Self>) {
1951 cx.emit(PromptEditorEvent::StartRequested);
1952 }
1953
1954 fn cancel(
1955 &mut self,
1956 _: &editor::actions::Cancel,
1957 _window: &mut Window,
1958 cx: &mut Context<Self>,
1959 ) {
1960 match self.codegen.read(cx).status(cx) {
1961 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
1962 cx.emit(PromptEditorEvent::CancelRequested);
1963 }
1964 CodegenStatus::Pending => {
1965 cx.emit(PromptEditorEvent::StopRequested);
1966 }
1967 }
1968 }
1969
1970 fn confirm(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
1971 match self.codegen.read(cx).status(cx) {
1972 CodegenStatus::Idle => {
1973 cx.emit(PromptEditorEvent::StartRequested);
1974 }
1975 CodegenStatus::Pending => {
1976 cx.emit(PromptEditorEvent::DismissRequested);
1977 }
1978 CodegenStatus::Done => {
1979 if self.edited_since_done {
1980 cx.emit(PromptEditorEvent::StartRequested);
1981 } else {
1982 cx.emit(PromptEditorEvent::ConfirmRequested);
1983 }
1984 }
1985 CodegenStatus::Error(_) => {
1986 cx.emit(PromptEditorEvent::StartRequested);
1987 }
1988 }
1989 }
1990
1991 fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1992 if let Some(ix) = self.prompt_history_ix {
1993 if ix > 0 {
1994 self.prompt_history_ix = Some(ix - 1);
1995 let prompt = self.prompt_history[ix - 1].as_str();
1996 self.editor.update(cx, |editor, cx| {
1997 editor.set_text(prompt, window, cx);
1998 editor.move_to_beginning(&Default::default(), window, cx);
1999 });
2000 }
2001 } else if !self.prompt_history.is_empty() {
2002 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
2003 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
2004 self.editor.update(cx, |editor, cx| {
2005 editor.set_text(prompt, window, cx);
2006 editor.move_to_beginning(&Default::default(), window, cx);
2007 });
2008 }
2009 }
2010
2011 fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
2012 if let Some(ix) = self.prompt_history_ix {
2013 if ix < self.prompt_history.len() - 1 {
2014 self.prompt_history_ix = Some(ix + 1);
2015 let prompt = self.prompt_history[ix + 1].as_str();
2016 self.editor.update(cx, |editor, cx| {
2017 editor.set_text(prompt, window, cx);
2018 editor.move_to_end(&Default::default(), window, cx)
2019 });
2020 } else {
2021 self.prompt_history_ix = None;
2022 let prompt = self.pending_prompt.as_str();
2023 self.editor.update(cx, |editor, cx| {
2024 editor.set_text(prompt, window, cx);
2025 editor.move_to_end(&Default::default(), window, cx)
2026 });
2027 }
2028 }
2029 }
2030
2031 fn cycle_prev(
2032 &mut self,
2033 _: &CyclePreviousInlineAssist,
2034 _: &mut Window,
2035 cx: &mut Context<Self>,
2036 ) {
2037 self.codegen
2038 .update(cx, |codegen, cx| codegen.cycle_prev(cx));
2039 }
2040
2041 fn cycle_next(&mut self, _: &CycleNextInlineAssist, _: &mut Window, cx: &mut Context<Self>) {
2042 self.codegen
2043 .update(cx, |codegen, cx| codegen.cycle_next(cx));
2044 }
2045
2046 fn render_cycle_controls(&self, cx: &Context<Self>) -> AnyElement {
2047 let codegen = self.codegen.read(cx);
2048 let disabled = matches!(codegen.status(cx), CodegenStatus::Idle);
2049
2050 let model_registry = LanguageModelRegistry::read_global(cx);
2051 let default_model = model_registry.active_model();
2052 let alternative_models = model_registry.inline_alternative_models();
2053
2054 let get_model_name = |index: usize| -> String {
2055 let name = |model: &Arc<dyn LanguageModel>| model.name().0.to_string();
2056
2057 match index {
2058 0 => default_model.as_ref().map_or_else(String::new, name),
2059 index if index <= alternative_models.len() => alternative_models
2060 .get(index - 1)
2061 .map_or_else(String::new, name),
2062 _ => String::new(),
2063 }
2064 };
2065
2066 let total_models = alternative_models.len() + 1;
2067
2068 if total_models <= 1 {
2069 return div().into_any_element();
2070 }
2071
2072 let current_index = codegen.active_alternative;
2073 let prev_index = (current_index + total_models - 1) % total_models;
2074 let next_index = (current_index + 1) % total_models;
2075
2076 let prev_model_name = get_model_name(prev_index);
2077 let next_model_name = get_model_name(next_index);
2078
2079 h_flex()
2080 .child(
2081 IconButton::new("previous", IconName::ChevronLeft)
2082 .icon_color(Color::Muted)
2083 .disabled(disabled || current_index == 0)
2084 .shape(IconButtonShape::Square)
2085 .tooltip({
2086 let focus_handle = self.editor.focus_handle(cx);
2087 move |window, cx| {
2088 cx.new(|cx| {
2089 let mut tooltip = Tooltip::new("Previous Alternative").key_binding(
2090 KeyBinding::for_action_in(
2091 &CyclePreviousInlineAssist,
2092 &focus_handle,
2093 window,
2094 cx,
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(|cx| {
2132 let mut tooltip = Tooltip::new("Next Alternative").key_binding(
2133 KeyBinding::for_action_in(
2134 &CycleNextInlineAssist,
2135 &focus_handle,
2136 window,
2137 cx,
2138 ),
2139 );
2140 if !disabled && current_index != total_models - 1 {
2141 tooltip = tooltip.meta(next_model_name.clone());
2142 }
2143 tooltip
2144 })
2145 .into()
2146 }
2147 })
2148 .on_click(cx.listener(|this, _, _, cx| {
2149 this.codegen
2150 .update(cx, |codegen, cx| codegen.cycle_next(cx))
2151 })),
2152 )
2153 .into_any_element()
2154 }
2155
2156 fn render_token_count(&self, cx: &mut Context<Self>) -> Option<impl IntoElement> {
2157 let model = LanguageModelRegistry::read_global(cx).active_model()?;
2158 let token_counts = self.token_counts?;
2159 let max_token_count = model.max_token_count();
2160
2161 let remaining_tokens = max_token_count as isize - token_counts.total as isize;
2162 let token_count_color = if remaining_tokens <= 0 {
2163 Color::Error
2164 } else if token_counts.total as f32 / max_token_count as f32 >= 0.8 {
2165 Color::Warning
2166 } else {
2167 Color::Muted
2168 };
2169
2170 let mut token_count = h_flex()
2171 .id("token_count")
2172 .gap_0p5()
2173 .child(
2174 Label::new(humanize_token_count(token_counts.total))
2175 .size(LabelSize::Small)
2176 .color(token_count_color),
2177 )
2178 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
2179 .child(
2180 Label::new(humanize_token_count(max_token_count))
2181 .size(LabelSize::Small)
2182 .color(Color::Muted),
2183 );
2184 if let Some(workspace) = self.workspace.clone() {
2185 token_count = token_count
2186 .tooltip(move |window, cx| {
2187 Tooltip::with_meta(
2188 format!(
2189 "Tokens Used ({} from the Assistant Panel)",
2190 humanize_token_count(token_counts.assistant_panel)
2191 ),
2192 None,
2193 "Click to open the Assistant Panel",
2194 window,
2195 cx,
2196 )
2197 })
2198 .cursor_pointer()
2199 .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| cx.stop_propagation())
2200 .on_click(move |_, window, cx| {
2201 cx.stop_propagation();
2202 workspace
2203 .update(cx, |workspace, cx| {
2204 workspace.focus_panel::<AssistantPanel>(window, cx)
2205 })
2206 .ok();
2207 });
2208 } else {
2209 token_count = token_count
2210 .cursor_default()
2211 .tooltip(Tooltip::text("Tokens used"));
2212 }
2213
2214 Some(token_count)
2215 }
2216
2217 fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
2218 let settings = ThemeSettings::get_global(cx);
2219 let text_style = TextStyle {
2220 color: if self.editor.read(cx).read_only(cx) {
2221 cx.theme().colors().text_disabled
2222 } else {
2223 cx.theme().colors().text
2224 },
2225 font_family: settings.buffer_font.family.clone(),
2226 font_fallbacks: settings.buffer_font.fallbacks.clone(),
2227 font_size: settings.buffer_font_size(cx).into(),
2228 font_weight: settings.buffer_font.weight,
2229 line_height: relative(settings.buffer_line_height.value()),
2230 ..Default::default()
2231 };
2232 EditorElement::new(
2233 &self.editor,
2234 EditorStyle {
2235 background: cx.theme().colors().editor_background,
2236 local_player: cx.theme().players().local(),
2237 text: text_style,
2238 ..Default::default()
2239 },
2240 )
2241 }
2242
2243 fn render_rate_limit_notice(&self, cx: &mut Context<Self>) -> impl IntoElement {
2244 Popover::new().child(
2245 v_flex()
2246 .occlude()
2247 .p_2()
2248 .child(
2249 Label::new("Out of Tokens")
2250 .size(LabelSize::Small)
2251 .weight(FontWeight::BOLD),
2252 )
2253 .child(Label::new(
2254 "Try Zed Pro for higher limits, a wider range of models, and more.",
2255 ))
2256 .child(
2257 h_flex()
2258 .justify_between()
2259 .child(CheckboxWithLabel::new(
2260 "dont-show-again",
2261 Label::new("Don't show again"),
2262 if dismissed_rate_limit_notice() {
2263 ui::ToggleState::Selected
2264 } else {
2265 ui::ToggleState::Unselected
2266 },
2267 |selection, _, cx| {
2268 let is_dismissed = match selection {
2269 ui::ToggleState::Unselected => false,
2270 ui::ToggleState::Indeterminate => return,
2271 ui::ToggleState::Selected => true,
2272 };
2273
2274 set_rate_limit_notice_dismissed(is_dismissed, cx)
2275 },
2276 ))
2277 .child(
2278 h_flex()
2279 .gap_2()
2280 .child(
2281 Button::new("dismiss", "Dismiss")
2282 .style(ButtonStyle::Transparent)
2283 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
2284 )
2285 .child(Button::new("more-info", "More Info").on_click(
2286 |_event, window, cx| {
2287 window.dispatch_action(
2288 Box::new(zed_actions::OpenAccountSettings),
2289 cx,
2290 )
2291 },
2292 )),
2293 ),
2294 ),
2295 )
2296 }
2297}
2298
2299const DISMISSED_RATE_LIMIT_NOTICE_KEY: &str = "dismissed-rate-limit-notice";
2300
2301fn dismissed_rate_limit_notice() -> bool {
2302 db::kvp::KEY_VALUE_STORE
2303 .read_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY)
2304 .log_err()
2305 .map_or(false, |s| s.is_some())
2306}
2307
2308fn set_rate_limit_notice_dismissed(is_dismissed: bool, cx: &mut App) {
2309 db::write_and_log(cx, move || async move {
2310 if is_dismissed {
2311 db::kvp::KEY_VALUE_STORE
2312 .write_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into(), "1".into())
2313 .await
2314 } else {
2315 db::kvp::KEY_VALUE_STORE
2316 .delete_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into())
2317 .await
2318 }
2319 })
2320}
2321
2322struct InlineAssist {
2323 group_id: InlineAssistGroupId,
2324 range: Range<Anchor>,
2325 editor: WeakEntity<Editor>,
2326 decorations: Option<InlineAssistDecorations>,
2327 codegen: Entity<Codegen>,
2328 _subscriptions: Vec<Subscription>,
2329 workspace: Option<WeakEntity<Workspace>>,
2330 include_context: bool,
2331}
2332
2333impl InlineAssist {
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_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_spawn(async move {
3330 let old_text = old_snapshot
3331 .text_for_range(
3332 Point::new(old_range.start.row, 0)
3333 ..Point::new(
3334 old_range.end.row,
3335 old_snapshot.line_len(MultiBufferRow(old_range.end.row)),
3336 ),
3337 )
3338 .collect::<String>();
3339 let new_text = new_snapshot
3340 .text_for_range(
3341 Point::new(new_range.start.row, 0)
3342 ..Point::new(
3343 new_range.end.row,
3344 new_snapshot.line_len(MultiBufferRow(new_range.end.row)),
3345 ),
3346 )
3347 .collect::<String>();
3348
3349 let old_start_row = old_range.start.row;
3350 let new_start_row = new_range.start.row;
3351 let mut deleted_row_ranges: Vec<(Anchor, RangeInclusive<u32>)> = Vec::new();
3352 let mut inserted_row_ranges = Vec::new();
3353 for (old_rows, new_rows) in line_diff(&old_text, &new_text) {
3354 let old_rows = old_start_row + old_rows.start..old_start_row + old_rows.end;
3355 let new_rows = new_start_row + new_rows.start..new_start_row + new_rows.end;
3356 if !old_rows.is_empty() {
3357 deleted_row_ranges.push((
3358 new_snapshot.anchor_before(Point::new(new_rows.start, 0)),
3359 old_rows.start..=old_rows.end - 1,
3360 ));
3361 }
3362 if !new_rows.is_empty() {
3363 let start = new_snapshot.anchor_before(Point::new(new_rows.start, 0));
3364 let new_end_row = new_rows.end - 1;
3365 let end = new_snapshot.anchor_before(Point::new(
3366 new_end_row,
3367 new_snapshot.line_len(MultiBufferRow(new_end_row)),
3368 ));
3369 inserted_row_ranges.push(start..end);
3370 }
3371 }
3372 (deleted_row_ranges, inserted_row_ranges)
3373 })
3374 .await;
3375
3376 codegen
3377 .update(&mut cx, |codegen, cx| {
3378 codegen.diff.deleted_row_ranges = deleted_row_ranges;
3379 codegen.diff.inserted_row_ranges = inserted_row_ranges;
3380 cx.notify();
3381 })
3382 .ok();
3383 })
3384 }
3385}
3386
3387struct StripInvalidSpans<T> {
3388 stream: T,
3389 stream_done: bool,
3390 buffer: String,
3391 first_line: bool,
3392 line_end: bool,
3393 starts_with_code_block: bool,
3394}
3395
3396impl<T> StripInvalidSpans<T>
3397where
3398 T: Stream<Item = Result<String>>,
3399{
3400 fn new(stream: T) -> Self {
3401 Self {
3402 stream,
3403 stream_done: false,
3404 buffer: String::new(),
3405 first_line: true,
3406 line_end: false,
3407 starts_with_code_block: false,
3408 }
3409 }
3410}
3411
3412impl<T> Stream for StripInvalidSpans<T>
3413where
3414 T: Stream<Item = Result<String>>,
3415{
3416 type Item = Result<String>;
3417
3418 fn poll_next(self: Pin<&mut Self>, cx: &mut task::Context) -> Poll<Option<Self::Item>> {
3419 const CODE_BLOCK_DELIMITER: &str = "```";
3420 const CURSOR_SPAN: &str = "<|CURSOR|>";
3421
3422 let this = unsafe { self.get_unchecked_mut() };
3423 loop {
3424 if !this.stream_done {
3425 let mut stream = unsafe { Pin::new_unchecked(&mut this.stream) };
3426 match stream.as_mut().poll_next(cx) {
3427 Poll::Ready(Some(Ok(chunk))) => {
3428 this.buffer.push_str(&chunk);
3429 }
3430 Poll::Ready(Some(Err(error))) => return Poll::Ready(Some(Err(error))),
3431 Poll::Ready(None) => {
3432 this.stream_done = true;
3433 }
3434 Poll::Pending => return Poll::Pending,
3435 }
3436 }
3437
3438 let mut chunk = String::new();
3439 let mut consumed = 0;
3440 if !this.buffer.is_empty() {
3441 let mut lines = this.buffer.split('\n').enumerate().peekable();
3442 while let Some((line_ix, line)) = lines.next() {
3443 if line_ix > 0 {
3444 this.first_line = false;
3445 }
3446
3447 if this.first_line {
3448 let trimmed_line = line.trim();
3449 if lines.peek().is_some() {
3450 if trimmed_line.starts_with(CODE_BLOCK_DELIMITER) {
3451 consumed += line.len() + 1;
3452 this.starts_with_code_block = true;
3453 continue;
3454 }
3455 } else if trimmed_line.is_empty()
3456 || prefixes(CODE_BLOCK_DELIMITER)
3457 .any(|prefix| trimmed_line.starts_with(prefix))
3458 {
3459 break;
3460 }
3461 }
3462
3463 let line_without_cursor = line.replace(CURSOR_SPAN, "");
3464 if lines.peek().is_some() {
3465 if this.line_end {
3466 chunk.push('\n');
3467 }
3468
3469 chunk.push_str(&line_without_cursor);
3470 this.line_end = true;
3471 consumed += line.len() + 1;
3472 } else if this.stream_done {
3473 if !this.starts_with_code_block
3474 || !line_without_cursor.trim().ends_with(CODE_BLOCK_DELIMITER)
3475 {
3476 if this.line_end {
3477 chunk.push('\n');
3478 }
3479
3480 chunk.push_str(&line);
3481 }
3482
3483 consumed += line.len();
3484 } else {
3485 let trimmed_line = line.trim();
3486 if trimmed_line.is_empty()
3487 || prefixes(CURSOR_SPAN).any(|prefix| trimmed_line.ends_with(prefix))
3488 || prefixes(CODE_BLOCK_DELIMITER)
3489 .any(|prefix| trimmed_line.ends_with(prefix))
3490 {
3491 break;
3492 } else {
3493 if this.line_end {
3494 chunk.push('\n');
3495 this.line_end = false;
3496 }
3497
3498 chunk.push_str(&line_without_cursor);
3499 consumed += line.len();
3500 }
3501 }
3502 }
3503 }
3504
3505 this.buffer = this.buffer.split_off(consumed);
3506 if !chunk.is_empty() {
3507 return Poll::Ready(Some(Ok(chunk)));
3508 } else if this.stream_done {
3509 return Poll::Ready(None);
3510 }
3511 }
3512 }
3513}
3514
3515struct AssistantCodeActionProvider {
3516 editor: WeakEntity<Editor>,
3517 workspace: WeakEntity<Workspace>,
3518}
3519
3520const ASSISTANT_CODE_ACTION_PROVIDER_ID: &str = "assistant";
3521
3522impl CodeActionProvider for AssistantCodeActionProvider {
3523 fn id(&self) -> Arc<str> {
3524 ASSISTANT_CODE_ACTION_PROVIDER_ID.into()
3525 }
3526
3527 fn code_actions(
3528 &self,
3529 buffer: &Entity<Buffer>,
3530 range: Range<text::Anchor>,
3531 _: &mut Window,
3532 cx: &mut App,
3533 ) -> Task<Result<Vec<CodeAction>>> {
3534 if !AssistantSettings::get_global(cx).enabled {
3535 return Task::ready(Ok(Vec::new()));
3536 }
3537
3538 let snapshot = buffer.read(cx).snapshot();
3539 let mut range = range.to_point(&snapshot);
3540
3541 // Expand the range to line boundaries.
3542 range.start.column = 0;
3543 range.end.column = snapshot.line_len(range.end.row);
3544
3545 let mut has_diagnostics = false;
3546 for diagnostic in snapshot.diagnostics_in_range::<_, Point>(range.clone(), false) {
3547 range.start = cmp::min(range.start, diagnostic.range.start);
3548 range.end = cmp::max(range.end, diagnostic.range.end);
3549 has_diagnostics = true;
3550 }
3551 if has_diagnostics {
3552 if let Some(symbols_containing_start) = snapshot.symbols_containing(range.start, None) {
3553 if let Some(symbol) = symbols_containing_start.last() {
3554 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3555 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3556 }
3557 }
3558
3559 if let Some(symbols_containing_end) = snapshot.symbols_containing(range.end, None) {
3560 if let Some(symbol) = symbols_containing_end.last() {
3561 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3562 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3563 }
3564 }
3565
3566 Task::ready(Ok(vec![CodeAction {
3567 server_id: language::LanguageServerId(0),
3568 range: snapshot.anchor_before(range.start)..snapshot.anchor_after(range.end),
3569 lsp_action: LspAction::Action(Box::new(lsp::CodeAction {
3570 title: "Fix with Assistant".into(),
3571 ..Default::default()
3572 })),
3573 }]))
3574 } else {
3575 Task::ready(Ok(Vec::new()))
3576 }
3577 }
3578
3579 fn apply_code_action(
3580 &self,
3581 buffer: Entity<Buffer>,
3582 action: CodeAction,
3583 excerpt_id: ExcerptId,
3584 _push_to_history: bool,
3585 window: &mut Window,
3586 cx: &mut App,
3587 ) -> Task<Result<ProjectTransaction>> {
3588 let editor = self.editor.clone();
3589 let workspace = self.workspace.clone();
3590 window.spawn(cx, |mut cx| async move {
3591 let editor = editor.upgrade().context("editor was released")?;
3592 let range = editor
3593 .update(&mut cx, |editor, cx| {
3594 editor.buffer().update(cx, |multibuffer, cx| {
3595 let buffer = buffer.read(cx);
3596 let multibuffer_snapshot = multibuffer.read(cx);
3597
3598 let old_context_range =
3599 multibuffer_snapshot.context_range_for_excerpt(excerpt_id)?;
3600 let mut new_context_range = old_context_range.clone();
3601 if action
3602 .range
3603 .start
3604 .cmp(&old_context_range.start, buffer)
3605 .is_lt()
3606 {
3607 new_context_range.start = action.range.start;
3608 }
3609 if action.range.end.cmp(&old_context_range.end, buffer).is_gt() {
3610 new_context_range.end = action.range.end;
3611 }
3612 drop(multibuffer_snapshot);
3613
3614 if new_context_range != old_context_range {
3615 multibuffer.resize_excerpt(excerpt_id, new_context_range, cx);
3616 }
3617
3618 let multibuffer_snapshot = multibuffer.read(cx);
3619 Some(
3620 multibuffer_snapshot
3621 .anchor_in_excerpt(excerpt_id, action.range.start)?
3622 ..multibuffer_snapshot
3623 .anchor_in_excerpt(excerpt_id, action.range.end)?,
3624 )
3625 })
3626 })?
3627 .context("invalid range")?;
3628 let assistant_panel = workspace.update(&mut cx, |workspace, cx| {
3629 workspace
3630 .panel::<AssistantPanel>(cx)
3631 .context("assistant panel was released")
3632 })??;
3633
3634 cx.update_global(|assistant: &mut InlineAssistant, window, cx| {
3635 let assist_id = assistant.suggest_assist(
3636 &editor,
3637 range,
3638 "Fix Diagnostics".into(),
3639 None,
3640 true,
3641 Some(workspace),
3642 Some(&assistant_panel),
3643 window,
3644 cx,
3645 );
3646 assistant.start_assist(assist_id, window, cx);
3647 })?;
3648
3649 Ok(ProjectTransaction::default())
3650 })
3651 }
3652}
3653
3654fn prefixes(text: &str) -> impl Iterator<Item = &str> {
3655 (0..text.len() - 1).map(|ix| &text[..ix + 1])
3656}
3657
3658fn merge_ranges(ranges: &mut Vec<Range<Anchor>>, buffer: &MultiBufferSnapshot) {
3659 ranges.sort_unstable_by(|a, b| {
3660 a.start
3661 .cmp(&b.start, buffer)
3662 .then_with(|| b.end.cmp(&a.end, buffer))
3663 });
3664
3665 let mut ix = 0;
3666 while ix + 1 < ranges.len() {
3667 let b = ranges[ix + 1].clone();
3668 let a = &mut ranges[ix];
3669 if a.end.cmp(&b.start, buffer).is_gt() {
3670 if a.end.cmp(&b.end, buffer).is_lt() {
3671 a.end = b.end;
3672 }
3673 ranges.remove(ix + 1);
3674 } else {
3675 ix += 1;
3676 }
3677 }
3678}
3679
3680#[cfg(test)]
3681mod tests {
3682 use super::*;
3683 use futures::stream::{self};
3684 use gpui::TestAppContext;
3685 use indoc::indoc;
3686 use language::{
3687 language_settings, tree_sitter_rust, Buffer, Language, LanguageConfig, LanguageMatcher,
3688 Point,
3689 };
3690 use language_model::LanguageModelRegistry;
3691 use rand::prelude::*;
3692 use serde::Serialize;
3693 use settings::SettingsStore;
3694 use std::{future, sync::Arc};
3695
3696 #[derive(Serialize)]
3697 pub struct DummyCompletionRequest {
3698 pub name: String,
3699 }
3700
3701 #[gpui::test(iterations = 10)]
3702 async fn test_transform_autoindent(cx: &mut TestAppContext, mut rng: StdRng) {
3703 cx.set_global(cx.update(SettingsStore::test));
3704 cx.update(language_model::LanguageModelRegistry::test);
3705 cx.update(language_settings::init);
3706
3707 let text = indoc! {"
3708 fn main() {
3709 let x = 0;
3710 for _ in 0..10 {
3711 x += 1;
3712 }
3713 }
3714 "};
3715 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3716 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3717 let range = buffer.read_with(cx, |buffer, cx| {
3718 let snapshot = buffer.snapshot(cx);
3719 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(4, 5))
3720 });
3721 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3722 let codegen = cx.new(|cx| {
3723 CodegenAlternative::new(
3724 buffer.clone(),
3725 range.clone(),
3726 true,
3727 None,
3728 prompt_builder,
3729 cx,
3730 )
3731 });
3732
3733 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3734
3735 let mut new_text = concat!(
3736 " let mut x = 0;\n",
3737 " while x < 10 {\n",
3738 " x += 1;\n",
3739 " }",
3740 );
3741 while !new_text.is_empty() {
3742 let max_len = cmp::min(new_text.len(), 10);
3743 let len = rng.gen_range(1..=max_len);
3744 let (chunk, suffix) = new_text.split_at(len);
3745 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3746 new_text = suffix;
3747 cx.background_executor.run_until_parked();
3748 }
3749 drop(chunks_tx);
3750 cx.background_executor.run_until_parked();
3751
3752 assert_eq!(
3753 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3754 indoc! {"
3755 fn main() {
3756 let mut x = 0;
3757 while x < 10 {
3758 x += 1;
3759 }
3760 }
3761 "}
3762 );
3763 }
3764
3765 #[gpui::test(iterations = 10)]
3766 async fn test_autoindent_when_generating_past_indentation(
3767 cx: &mut TestAppContext,
3768 mut rng: StdRng,
3769 ) {
3770 cx.set_global(cx.update(SettingsStore::test));
3771 cx.update(language_settings::init);
3772
3773 let text = indoc! {"
3774 fn main() {
3775 le
3776 }
3777 "};
3778 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3779 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3780 let range = buffer.read_with(cx, |buffer, cx| {
3781 let snapshot = buffer.snapshot(cx);
3782 snapshot.anchor_before(Point::new(1, 6))..snapshot.anchor_after(Point::new(1, 6))
3783 });
3784 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3785 let codegen = cx.new(|cx| {
3786 CodegenAlternative::new(
3787 buffer.clone(),
3788 range.clone(),
3789 true,
3790 None,
3791 prompt_builder,
3792 cx,
3793 )
3794 });
3795
3796 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3797
3798 cx.background_executor.run_until_parked();
3799
3800 let mut new_text = concat!(
3801 "t mut x = 0;\n",
3802 "while x < 10 {\n",
3803 " x += 1;\n",
3804 "}", //
3805 );
3806 while !new_text.is_empty() {
3807 let max_len = cmp::min(new_text.len(), 10);
3808 let len = rng.gen_range(1..=max_len);
3809 let (chunk, suffix) = new_text.split_at(len);
3810 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3811 new_text = suffix;
3812 cx.background_executor.run_until_parked();
3813 }
3814 drop(chunks_tx);
3815 cx.background_executor.run_until_parked();
3816
3817 assert_eq!(
3818 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3819 indoc! {"
3820 fn main() {
3821 let mut x = 0;
3822 while x < 10 {
3823 x += 1;
3824 }
3825 }
3826 "}
3827 );
3828 }
3829
3830 #[gpui::test(iterations = 10)]
3831 async fn test_autoindent_when_generating_before_indentation(
3832 cx: &mut TestAppContext,
3833 mut rng: StdRng,
3834 ) {
3835 cx.update(LanguageModelRegistry::test);
3836 cx.set_global(cx.update(SettingsStore::test));
3837 cx.update(language_settings::init);
3838
3839 let text = concat!(
3840 "fn main() {\n",
3841 " \n",
3842 "}\n" //
3843 );
3844 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3845 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3846 let range = buffer.read_with(cx, |buffer, cx| {
3847 let snapshot = buffer.snapshot(cx);
3848 snapshot.anchor_before(Point::new(1, 2))..snapshot.anchor_after(Point::new(1, 2))
3849 });
3850 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3851 let codegen = cx.new(|cx| {
3852 CodegenAlternative::new(
3853 buffer.clone(),
3854 range.clone(),
3855 true,
3856 None,
3857 prompt_builder,
3858 cx,
3859 )
3860 });
3861
3862 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3863
3864 cx.background_executor.run_until_parked();
3865
3866 let mut new_text = concat!(
3867 "let mut x = 0;\n",
3868 "while x < 10 {\n",
3869 " x += 1;\n",
3870 "}", //
3871 );
3872 while !new_text.is_empty() {
3873 let max_len = cmp::min(new_text.len(), 10);
3874 let len = rng.gen_range(1..=max_len);
3875 let (chunk, suffix) = new_text.split_at(len);
3876 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3877 new_text = suffix;
3878 cx.background_executor.run_until_parked();
3879 }
3880 drop(chunks_tx);
3881 cx.background_executor.run_until_parked();
3882
3883 assert_eq!(
3884 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3885 indoc! {"
3886 fn main() {
3887 let mut x = 0;
3888 while x < 10 {
3889 x += 1;
3890 }
3891 }
3892 "}
3893 );
3894 }
3895
3896 #[gpui::test(iterations = 10)]
3897 async fn test_autoindent_respects_tabs_in_selection(cx: &mut TestAppContext) {
3898 cx.update(LanguageModelRegistry::test);
3899 cx.set_global(cx.update(SettingsStore::test));
3900 cx.update(language_settings::init);
3901
3902 let text = indoc! {"
3903 func main() {
3904 \tx := 0
3905 \tfor i := 0; i < 10; i++ {
3906 \t\tx++
3907 \t}
3908 }
3909 "};
3910 let buffer = cx.new(|cx| Buffer::local(text, cx));
3911 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3912 let range = buffer.read_with(cx, |buffer, cx| {
3913 let snapshot = buffer.snapshot(cx);
3914 snapshot.anchor_before(Point::new(0, 0))..snapshot.anchor_after(Point::new(4, 2))
3915 });
3916 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3917 let codegen = cx.new(|cx| {
3918 CodegenAlternative::new(
3919 buffer.clone(),
3920 range.clone(),
3921 true,
3922 None,
3923 prompt_builder,
3924 cx,
3925 )
3926 });
3927
3928 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3929 let new_text = concat!(
3930 "func main() {\n",
3931 "\tx := 0\n",
3932 "\tfor x < 10 {\n",
3933 "\t\tx++\n",
3934 "\t}", //
3935 );
3936 chunks_tx.unbounded_send(new_text.to_string()).unwrap();
3937 drop(chunks_tx);
3938 cx.background_executor.run_until_parked();
3939
3940 assert_eq!(
3941 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3942 indoc! {"
3943 func main() {
3944 \tx := 0
3945 \tfor x < 10 {
3946 \t\tx++
3947 \t}
3948 }
3949 "}
3950 );
3951 }
3952
3953 #[gpui::test]
3954 async fn test_inactive_codegen_alternative(cx: &mut TestAppContext) {
3955 cx.update(LanguageModelRegistry::test);
3956 cx.set_global(cx.update(SettingsStore::test));
3957 cx.update(language_settings::init);
3958
3959 let text = indoc! {"
3960 fn main() {
3961 let x = 0;
3962 }
3963 "};
3964 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3965 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3966 let range = buffer.read_with(cx, |buffer, cx| {
3967 let snapshot = buffer.snapshot(cx);
3968 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(1, 14))
3969 });
3970 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3971 let codegen = cx.new(|cx| {
3972 CodegenAlternative::new(
3973 buffer.clone(),
3974 range.clone(),
3975 false,
3976 None,
3977 prompt_builder,
3978 cx,
3979 )
3980 });
3981
3982 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3983 chunks_tx
3984 .unbounded_send("let mut x = 0;\nx += 1;".to_string())
3985 .unwrap();
3986 drop(chunks_tx);
3987 cx.run_until_parked();
3988
3989 // The codegen is inactive, so the buffer doesn't get modified.
3990 assert_eq!(
3991 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3992 text
3993 );
3994
3995 // Activating the codegen applies the changes.
3996 codegen.update(cx, |codegen, cx| codegen.set_active(true, cx));
3997 assert_eq!(
3998 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3999 indoc! {"
4000 fn main() {
4001 let mut x = 0;
4002 x += 1;
4003 }
4004 "}
4005 );
4006
4007 // Deactivating the codegen undoes the changes.
4008 codegen.update(cx, |codegen, cx| codegen.set_active(false, cx));
4009 cx.run_until_parked();
4010 assert_eq!(
4011 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4012 text
4013 );
4014 }
4015
4016 #[gpui::test]
4017 async fn test_strip_invalid_spans_from_codeblock() {
4018 assert_chunks("Lorem ipsum dolor", "Lorem ipsum dolor").await;
4019 assert_chunks("```\nLorem ipsum dolor", "Lorem ipsum dolor").await;
4020 assert_chunks("```\nLorem ipsum dolor\n```", "Lorem ipsum dolor").await;
4021 assert_chunks(
4022 "```html\n```js\nLorem ipsum dolor\n```\n```",
4023 "```js\nLorem ipsum dolor\n```",
4024 )
4025 .await;
4026 assert_chunks("``\nLorem ipsum dolor\n```", "``\nLorem ipsum dolor\n```").await;
4027 assert_chunks("Lorem<|CURSOR|> ipsum", "Lorem ipsum").await;
4028 assert_chunks("Lorem ipsum", "Lorem ipsum").await;
4029 assert_chunks("```\n<|CURSOR|>Lorem ipsum\n```", "Lorem ipsum").await;
4030
4031 async fn assert_chunks(text: &str, expected_text: &str) {
4032 for chunk_size in 1..=text.len() {
4033 let actual_text = StripInvalidSpans::new(chunks(text, chunk_size))
4034 .map(|chunk| chunk.unwrap())
4035 .collect::<String>()
4036 .await;
4037 assert_eq!(
4038 actual_text, expected_text,
4039 "failed to strip invalid spans, chunk size: {}",
4040 chunk_size
4041 );
4042 }
4043 }
4044
4045 fn chunks(text: &str, size: usize) -> impl Stream<Item = Result<String>> {
4046 stream::iter(
4047 text.chars()
4048 .collect::<Vec<_>>()
4049 .chunks(size)
4050 .map(|chunk| Ok(chunk.iter().collect::<String>()))
4051 .collect::<Vec<_>>(),
4052 )
4053 }
4054 }
4055
4056 fn simulate_response_stream(
4057 codegen: Entity<CodegenAlternative>,
4058 cx: &mut TestAppContext,
4059 ) -> mpsc::UnboundedSender<String> {
4060 let (chunks_tx, chunks_rx) = mpsc::unbounded();
4061 codegen.update(cx, |codegen, cx| {
4062 codegen.handle_stream(
4063 String::new(),
4064 String::new(),
4065 None,
4066 future::ready(Ok(LanguageModelTextStream {
4067 message_id: None,
4068 stream: chunks_rx.map(Ok).boxed(),
4069 })),
4070 cx,
4071 );
4072 });
4073 chunks_tx
4074 }
4075
4076 fn rust_lang() -> Language {
4077 Language::new(
4078 LanguageConfig {
4079 name: "Rust".into(),
4080 matcher: LanguageMatcher {
4081 path_suffixes: vec!["rs".to_string()],
4082 ..Default::default()
4083 },
4084 ..Default::default()
4085 },
4086 Some(tree_sitter_rust::LANGUAGE.into()),
4087 )
4088 .with_indents_query(
4089 r#"
4090 (call_expression) @indent
4091 (field_expression) @indent
4092 (_ "(" ")" @end) @indent
4093 (_ "{" "}" @end) @indent
4094 "#,
4095 )
4096 .unwrap()
4097 }
4098}