1use crate::{
2 Assistant, AssistantPanel, AssistantPanelEvent, CycleNextInlineAssist,
3 CyclePreviousInlineAssist,
4};
5use anyhow::{Context as _, Result, anyhow};
6use assistant_context_editor::{RequestType, humanize_token_count};
7use assistant_settings::AssistantSettings;
8use client::{ErrorExt, telemetry::Telemetry};
9use collections::{HashMap, HashSet, VecDeque, hash_map};
10use editor::{
11 Anchor, AnchorRangeExt, CodeActionProvider, Editor, EditorElement, EditorEvent, EditorMode,
12 EditorStyle, ExcerptId, ExcerptRange, GutterDimensions, MultiBuffer, MultiBufferSnapshot,
13 ToOffset as _, ToPoint,
14 actions::{MoveDown, MoveUp, SelectAll},
15 display_map::{
16 BlockContext, BlockPlacement, BlockProperties, BlockStyle, CustomBlockId, RenderBlock,
17 ToDisplayPoint,
18 },
19};
20use feature_flags::{
21 Assistant2FeatureFlag, FeatureFlagAppExt as _, FeatureFlagViewExt as _, ZedProFeatureFlag,
22};
23use fs::Fs;
24use futures::{
25 SinkExt, Stream, StreamExt, TryStreamExt as _,
26 channel::mpsc,
27 future::{BoxFuture, LocalBoxFuture},
28 join,
29};
30use gpui::{
31 AnyElement, App, ClickEvent, Context, CursorStyle, Entity, EventEmitter, FocusHandle,
32 Focusable, FontWeight, Global, HighlightStyle, Subscription, Task, TextStyle, UpdateGlobal,
33 WeakEntity, Window, anchored, deferred, point,
34};
35use language::{Buffer, IndentKind, Point, Selection, TransactionId, line_diff};
36use language_model::{
37 ConfiguredModel, LanguageModel, LanguageModelRegistry, LanguageModelRequest,
38 LanguageModelRequestMessage, LanguageModelTextStream, Role, report_assistant_event,
39};
40use language_model_selector::{LanguageModelSelector, LanguageModelSelectorPopoverMenu, ModelType};
41use multi_buffer::MultiBufferRow;
42use parking_lot::Mutex;
43use project::{CodeAction, LspAction, ProjectTransaction};
44use prompt_store::PromptBuilder;
45use rope::Rope;
46use settings::{Settings, SettingsStore, update_settings_file};
47use smol::future::FutureExt;
48use std::{
49 cmp,
50 future::{self, Future},
51 iter, mem,
52 ops::{Range, RangeInclusive},
53 pin::Pin,
54 rc::Rc,
55 sync::Arc,
56 task::{self, Poll},
57 time::{Duration, Instant},
58};
59use streaming_diff::{CharOperation, LineDiff, LineOperation, StreamingDiff};
60use telemetry_events::{AssistantEventData, AssistantKind, AssistantPhase};
61use terminal_view::terminal_panel::TerminalPanel;
62use text::{OffsetRangeExt, ToPoint as _};
63use theme::ThemeSettings;
64use ui::{
65 CheckboxWithLabel, IconButtonShape, KeyBinding, Popover, Tooltip, prelude::*, text_for_action,
66};
67use util::{RangeExt, ResultExt};
68use workspace::{ItemHandle, Toast, Workspace, notifications::NotificationId};
69
70pub fn init(
71 fs: Arc<dyn Fs>,
72 prompt_builder: Arc<PromptBuilder>,
73 telemetry: Arc<Telemetry>,
74 cx: &mut App,
75) {
76 cx.set_global(InlineAssistant::new(fs, prompt_builder, telemetry));
77 cx.observe_new(|_, window, cx| {
78 let Some(window) = window else {
79 return;
80 };
81 let workspace = cx.entity().clone();
82 InlineAssistant::update_global(cx, |inline_assistant, cx| {
83 inline_assistant.register_workspace(&workspace, window, cx)
84 });
85
86 cx.observe_flag::<Assistant2FeatureFlag, _>(window, {
87 |is_assistant2_enabled, _workspace, _window, cx| {
88 InlineAssistant::update_global(cx, |inline_assistant, _cx| {
89 inline_assistant.is_assistant2_enabled = is_assistant2_enabled;
90 });
91 }
92 })
93 .detach();
94 })
95 .detach();
96}
97
98const PROMPT_HISTORY_MAX_LEN: usize = 20;
99
100pub struct InlineAssistant {
101 next_assist_id: InlineAssistId,
102 next_assist_group_id: InlineAssistGroupId,
103 assists: HashMap<InlineAssistId, InlineAssist>,
104 assists_by_editor: HashMap<WeakEntity<Editor>, EditorInlineAssists>,
105 assist_groups: HashMap<InlineAssistGroupId, InlineAssistGroup>,
106 confirmed_assists: HashMap<InlineAssistId, Entity<CodegenAlternative>>,
107 prompt_history: VecDeque<String>,
108 prompt_builder: Arc<PromptBuilder>,
109 telemetry: Arc<Telemetry>,
110 fs: Arc<dyn Fs>,
111 is_assistant2_enabled: bool,
112}
113
114impl Global for InlineAssistant {}
115
116impl InlineAssistant {
117 pub fn new(
118 fs: Arc<dyn Fs>,
119 prompt_builder: Arc<PromptBuilder>,
120 telemetry: Arc<Telemetry>,
121 ) -> Self {
122 Self {
123 next_assist_id: InlineAssistId::default(),
124 next_assist_group_id: InlineAssistGroupId::default(),
125 assists: HashMap::default(),
126 assists_by_editor: HashMap::default(),
127 assist_groups: HashMap::default(),
128 confirmed_assists: HashMap::default(),
129 prompt_history: VecDeque::default(),
130 prompt_builder,
131 telemetry,
132 fs,
133 is_assistant2_enabled: false,
134 }
135 }
136
137 pub fn register_workspace(
138 &mut self,
139 workspace: &Entity<Workspace>,
140 window: &mut Window,
141 cx: &mut App,
142 ) {
143 window
144 .subscribe(workspace, cx, |workspace, event, window, cx| {
145 Self::update_global(cx, |this, cx| {
146 this.handle_workspace_event(workspace, event, window, cx)
147 });
148 })
149 .detach();
150
151 let workspace = workspace.downgrade();
152 cx.observe_global::<SettingsStore>(move |cx| {
153 let Some(workspace) = workspace.upgrade() else {
154 return;
155 };
156 let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {
157 return;
158 };
159 let enabled = AssistantSettings::get_global(cx).enabled;
160 terminal_panel.update(cx, |terminal_panel, cx| {
161 terminal_panel.set_assistant_enabled(enabled, cx)
162 });
163 })
164 .detach();
165 }
166
167 fn handle_workspace_event(
168 &mut self,
169 workspace: Entity<Workspace>,
170 event: &workspace::Event,
171 window: &mut Window,
172 cx: &mut App,
173 ) {
174 match event {
175 workspace::Event::UserSavedItem { item, .. } => {
176 // When the user manually saves an editor, automatically accepts all finished transformations.
177 if let Some(editor) = item.upgrade().and_then(|item| item.act_as::<Editor>(cx)) {
178 if let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) {
179 for assist_id in editor_assists.assist_ids.clone() {
180 let assist = &self.assists[&assist_id];
181 if let CodegenStatus::Done = assist.codegen.read(cx).status(cx) {
182 self.finish_assist(assist_id, false, window, cx)
183 }
184 }
185 }
186 }
187 }
188 workspace::Event::ItemAdded { item } => {
189 self.register_workspace_item(&workspace, item.as_ref(), window, cx);
190 }
191 _ => (),
192 }
193 }
194
195 fn register_workspace_item(
196 &mut self,
197 workspace: &Entity<Workspace>,
198 item: &dyn ItemHandle,
199 window: &mut Window,
200 cx: &mut App,
201 ) {
202 let is_assistant2_enabled = self.is_assistant2_enabled;
203
204 if let Some(editor) = item.act_as::<Editor>(cx) {
205 editor.update(cx, |editor, cx| {
206 if is_assistant2_enabled {
207 editor.remove_code_action_provider(
208 ASSISTANT_CODE_ACTION_PROVIDER_ID.into(),
209 window,
210 cx,
211 );
212 } else {
213 editor.add_code_action_provider(
214 Rc::new(AssistantCodeActionProvider {
215 editor: cx.entity().downgrade(),
216 workspace: workspace.downgrade(),
217 }),
218 window,
219 cx,
220 );
221 }
222 });
223 }
224 }
225
226 pub fn assist(
227 &mut self,
228 editor: &Entity<Editor>,
229 workspace: Option<WeakEntity<Workspace>>,
230 assistant_panel: Option<&Entity<AssistantPanel>>,
231 initial_prompt: Option<String>,
232 window: &mut Window,
233 cx: &mut App,
234 ) {
235 let (snapshot, initial_selections) = editor.update(cx, |editor, cx| {
236 (
237 editor.snapshot(window, cx),
238 editor.selections.all::<Point>(cx),
239 )
240 });
241
242 let mut selections = Vec::<Selection<Point>>::new();
243 let mut newest_selection = None;
244 for mut selection in initial_selections {
245 if selection.end > selection.start {
246 selection.start.column = 0;
247 // If the selection ends at the start of the line, we don't want to include it.
248 if selection.end.column == 0 {
249 selection.end.row -= 1;
250 }
251 selection.end.column = snapshot
252 .buffer_snapshot
253 .line_len(MultiBufferRow(selection.end.row));
254 } else if let Some(fold) =
255 snapshot.crease_for_buffer_row(MultiBufferRow(selection.end.row))
256 {
257 selection.start = fold.range().start;
258 selection.end = fold.range().end;
259 if MultiBufferRow(selection.end.row) < snapshot.buffer_snapshot.max_row() {
260 let chars = snapshot
261 .buffer_snapshot
262 .chars_at(Point::new(selection.end.row + 1, 0));
263
264 for c in chars {
265 if c == '\n' {
266 break;
267 }
268 if c.is_whitespace() {
269 continue;
270 }
271 if snapshot
272 .language_at(selection.end)
273 .is_some_and(|language| language.config().brackets.is_closing_brace(c))
274 {
275 selection.end.row += 1;
276 selection.end.column = snapshot
277 .buffer_snapshot
278 .line_len(MultiBufferRow(selection.end.row));
279 }
280 }
281 }
282 }
283
284 if let Some(prev_selection) = selections.last_mut() {
285 if selection.start <= prev_selection.end {
286 prev_selection.end = selection.end;
287 continue;
288 }
289 }
290
291 let latest_selection = newest_selection.get_or_insert_with(|| selection.clone());
292 if selection.id > latest_selection.id {
293 *latest_selection = selection.clone();
294 }
295 selections.push(selection);
296 }
297 let snapshot = &snapshot.buffer_snapshot;
298 let newest_selection = newest_selection.unwrap();
299
300 let mut codegen_ranges = Vec::new();
301 for (buffer, buffer_range, excerpt_id) in
302 snapshot.ranges_to_buffer_ranges(selections.iter().map(|selection| {
303 snapshot.anchor_before(selection.start)..snapshot.anchor_after(selection.end)
304 }))
305 {
306 let start = buffer.anchor_before(buffer_range.start);
307 let end = buffer.anchor_after(buffer_range.end);
308
309 codegen_ranges.push(Anchor::range_in_buffer(
310 excerpt_id,
311 buffer.remote_id(),
312 start..end,
313 ));
314
315 if let Some(ConfiguredModel { model, .. }) =
316 LanguageModelRegistry::read_global(cx).default_model()
317 {
318 self.telemetry.report_assistant_event(AssistantEventData {
319 conversation_id: None,
320 kind: AssistantKind::Inline,
321 phase: AssistantPhase::Invoked,
322 message_id: None,
323 model: model.telemetry_id(),
324 model_provider: model.provider_id().to_string(),
325 response_latency: None,
326 error_message: None,
327 language_name: buffer.language().map(|language| language.name().to_proto()),
328 });
329 }
330 }
331
332 let assist_group_id = self.next_assist_group_id.post_inc();
333 let prompt_buffer = cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx));
334 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
335
336 let mut assists = Vec::new();
337 let mut assist_to_focus = None;
338 for range in codegen_ranges {
339 let assist_id = self.next_assist_id.post_inc();
340 let codegen = cx.new(|cx| {
341 Codegen::new(
342 editor.read(cx).buffer().clone(),
343 range.clone(),
344 None,
345 self.telemetry.clone(),
346 self.prompt_builder.clone(),
347 cx,
348 )
349 });
350
351 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
352 let prompt_editor = cx.new(|cx| {
353 PromptEditor::new(
354 assist_id,
355 gutter_dimensions.clone(),
356 self.prompt_history.clone(),
357 prompt_buffer.clone(),
358 codegen.clone(),
359 editor,
360 assistant_panel,
361 workspace.clone(),
362 self.fs.clone(),
363 window,
364 cx,
365 )
366 });
367
368 if assist_to_focus.is_none() {
369 let focus_assist = if newest_selection.reversed {
370 range.start.to_point(&snapshot) == newest_selection.start
371 } else {
372 range.end.to_point(&snapshot) == newest_selection.end
373 };
374 if focus_assist {
375 assist_to_focus = Some(assist_id);
376 }
377 }
378
379 let [prompt_block_id, end_block_id] =
380 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
381
382 assists.push((
383 assist_id,
384 range,
385 prompt_editor,
386 prompt_block_id,
387 end_block_id,
388 ));
389 }
390
391 let editor_assists = self
392 .assists_by_editor
393 .entry(editor.downgrade())
394 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
395 let mut assist_group = InlineAssistGroup::new();
396 for (assist_id, range, prompt_editor, prompt_block_id, end_block_id) in assists {
397 self.assists.insert(
398 assist_id,
399 InlineAssist::new(
400 assist_id,
401 assist_group_id,
402 assistant_panel.is_some(),
403 editor,
404 &prompt_editor,
405 prompt_block_id,
406 end_block_id,
407 range,
408 prompt_editor.read(cx).codegen.clone(),
409 workspace.clone(),
410 window,
411 cx,
412 ),
413 );
414 assist_group.assist_ids.push(assist_id);
415 editor_assists.assist_ids.push(assist_id);
416 }
417 self.assist_groups.insert(assist_group_id, assist_group);
418
419 if let Some(assist_id) = assist_to_focus {
420 self.focus_assist(assist_id, window, cx);
421 }
422 }
423
424 pub fn suggest_assist(
425 &mut self,
426 editor: &Entity<Editor>,
427 mut range: Range<Anchor>,
428 initial_prompt: String,
429 initial_transaction_id: Option<TransactionId>,
430 focus: bool,
431 workspace: Option<WeakEntity<Workspace>>,
432 assistant_panel: Option<&Entity<AssistantPanel>>,
433 window: &mut Window,
434 cx: &mut App,
435 ) -> InlineAssistId {
436 let assist_group_id = self.next_assist_group_id.post_inc();
437 let prompt_buffer = cx.new(|cx| Buffer::local(&initial_prompt, cx));
438 let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));
439
440 let assist_id = self.next_assist_id.post_inc();
441
442 let buffer = editor.read(cx).buffer().clone();
443 {
444 let snapshot = buffer.read(cx).read(cx);
445 range.start = range.start.bias_left(&snapshot);
446 range.end = range.end.bias_right(&snapshot);
447 }
448
449 let codegen = cx.new(|cx| {
450 Codegen::new(
451 editor.read(cx).buffer().clone(),
452 range.clone(),
453 initial_transaction_id,
454 self.telemetry.clone(),
455 self.prompt_builder.clone(),
456 cx,
457 )
458 });
459
460 let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));
461 let prompt_editor = cx.new(|cx| {
462 PromptEditor::new(
463 assist_id,
464 gutter_dimensions.clone(),
465 self.prompt_history.clone(),
466 prompt_buffer.clone(),
467 codegen.clone(),
468 editor,
469 assistant_panel,
470 workspace.clone(),
471 self.fs.clone(),
472 window,
473 cx,
474 )
475 });
476
477 let [prompt_block_id, end_block_id] =
478 self.insert_assist_blocks(editor, &range, &prompt_editor, cx);
479
480 let editor_assists = self
481 .assists_by_editor
482 .entry(editor.downgrade())
483 .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));
484
485 let mut assist_group = InlineAssistGroup::new();
486 self.assists.insert(
487 assist_id,
488 InlineAssist::new(
489 assist_id,
490 assist_group_id,
491 assistant_panel.is_some(),
492 editor,
493 &prompt_editor,
494 prompt_block_id,
495 end_block_id,
496 range,
497 prompt_editor.read(cx).codegen.clone(),
498 workspace.clone(),
499 window,
500 cx,
501 ),
502 );
503 assist_group.assist_ids.push(assist_id);
504 editor_assists.assist_ids.push(assist_id);
505 self.assist_groups.insert(assist_group_id, assist_group);
506
507 if focus {
508 self.focus_assist(assist_id, window, cx);
509 }
510
511 assist_id
512 }
513
514 fn insert_assist_blocks(
515 &self,
516 editor: &Entity<Editor>,
517 range: &Range<Anchor>,
518 prompt_editor: &Entity<PromptEditor>,
519 cx: &mut App,
520 ) -> [CustomBlockId; 2] {
521 let prompt_editor_height = prompt_editor.update(cx, |prompt_editor, cx| {
522 prompt_editor
523 .editor
524 .update(cx, |editor, cx| editor.max_point(cx).row().0 + 1 + 2)
525 });
526 let assist_blocks = vec![
527 BlockProperties {
528 style: BlockStyle::Sticky,
529 placement: BlockPlacement::Above(range.start),
530 height: Some(prompt_editor_height),
531 render: build_assist_editor_renderer(prompt_editor),
532 priority: 0,
533 },
534 BlockProperties {
535 style: BlockStyle::Sticky,
536 placement: BlockPlacement::Below(range.end),
537 height: None,
538 render: Arc::new(|cx| {
539 v_flex()
540 .h_full()
541 .w_full()
542 .border_t_1()
543 .border_color(cx.theme().status().info_border)
544 .into_any_element()
545 }),
546 priority: 0,
547 },
548 ];
549
550 editor.update(cx, |editor, cx| {
551 let block_ids = editor.insert_blocks(assist_blocks, None, cx);
552 [block_ids[0], block_ids[1]]
553 })
554 }
555
556 fn handle_prompt_editor_focus_in(&mut self, assist_id: InlineAssistId, cx: &mut App) {
557 let assist = &self.assists[&assist_id];
558 let Some(decorations) = assist.decorations.as_ref() else {
559 return;
560 };
561 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
562 let editor_assists = self.assists_by_editor.get_mut(&assist.editor).unwrap();
563
564 assist_group.active_assist_id = Some(assist_id);
565 if assist_group.linked {
566 for assist_id in &assist_group.assist_ids {
567 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
568 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
569 prompt_editor.set_show_cursor_when_unfocused(true, cx)
570 });
571 }
572 }
573 }
574
575 assist
576 .editor
577 .update(cx, |editor, cx| {
578 let scroll_top = editor.scroll_position(cx).y;
579 let scroll_bottom = scroll_top + editor.visible_line_count().unwrap_or(0.);
580 let prompt_row = editor
581 .row_for_block(decorations.prompt_block_id, cx)
582 .unwrap()
583 .0 as f32;
584
585 if (scroll_top..scroll_bottom).contains(&prompt_row) {
586 editor_assists.scroll_lock = Some(InlineAssistScrollLock {
587 assist_id,
588 distance_from_top: prompt_row - scroll_top,
589 });
590 } else {
591 editor_assists.scroll_lock = None;
592 }
593 })
594 .ok();
595 }
596
597 fn handle_prompt_editor_focus_out(&mut self, assist_id: InlineAssistId, cx: &mut App) {
598 let assist = &self.assists[&assist_id];
599 let assist_group = self.assist_groups.get_mut(&assist.group_id).unwrap();
600 if assist_group.active_assist_id == Some(assist_id) {
601 assist_group.active_assist_id = None;
602 if assist_group.linked {
603 for assist_id in &assist_group.assist_ids {
604 if let Some(decorations) = self.assists[assist_id].decorations.as_ref() {
605 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
606 prompt_editor.set_show_cursor_when_unfocused(false, cx)
607 });
608 }
609 }
610 }
611 }
612 }
613
614 fn handle_prompt_editor_event(
615 &mut self,
616 prompt_editor: Entity<PromptEditor>,
617 event: &PromptEditorEvent,
618 window: &mut Window,
619 cx: &mut App,
620 ) {
621 let assist_id = prompt_editor.read(cx).id;
622 match event {
623 PromptEditorEvent::StartRequested => {
624 self.start_assist(assist_id, window, cx);
625 }
626 PromptEditorEvent::StopRequested => {
627 self.stop_assist(assist_id, cx);
628 }
629 PromptEditorEvent::ConfirmRequested => {
630 self.finish_assist(assist_id, false, window, cx);
631 }
632 PromptEditorEvent::CancelRequested => {
633 self.finish_assist(assist_id, true, window, cx);
634 }
635 PromptEditorEvent::DismissRequested => {
636 self.dismiss_assist(assist_id, window, cx);
637 }
638 }
639 }
640
641 fn handle_editor_newline(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
642 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
643 return;
644 };
645
646 if editor.read(cx).selections.count() == 1 {
647 let (selection, buffer) = editor.update(cx, |editor, cx| {
648 (
649 editor.selections.newest::<usize>(cx),
650 editor.buffer().read(cx).snapshot(cx),
651 )
652 });
653 for assist_id in &editor_assists.assist_ids {
654 let assist = &self.assists[assist_id];
655 let assist_range = assist.range.to_offset(&buffer);
656 if assist_range.contains(&selection.start) && assist_range.contains(&selection.end)
657 {
658 if matches!(assist.codegen.read(cx).status(cx), CodegenStatus::Pending) {
659 self.dismiss_assist(*assist_id, window, cx);
660 } else {
661 self.finish_assist(*assist_id, false, window, cx);
662 }
663
664 return;
665 }
666 }
667 }
668
669 cx.propagate();
670 }
671
672 fn handle_editor_cancel(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
673 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
674 return;
675 };
676
677 if editor.read(cx).selections.count() == 1 {
678 let (selection, buffer) = editor.update(cx, |editor, cx| {
679 (
680 editor.selections.newest::<usize>(cx),
681 editor.buffer().read(cx).snapshot(cx),
682 )
683 });
684 let mut closest_assist_fallback = None;
685 for assist_id in &editor_assists.assist_ids {
686 let assist = &self.assists[assist_id];
687 let assist_range = assist.range.to_offset(&buffer);
688 if assist.decorations.is_some() {
689 if assist_range.contains(&selection.start)
690 && assist_range.contains(&selection.end)
691 {
692 self.focus_assist(*assist_id, window, cx);
693 return;
694 } else {
695 let distance_from_selection = assist_range
696 .start
697 .abs_diff(selection.start)
698 .min(assist_range.start.abs_diff(selection.end))
699 + assist_range
700 .end
701 .abs_diff(selection.start)
702 .min(assist_range.end.abs_diff(selection.end));
703 match closest_assist_fallback {
704 Some((_, old_distance)) => {
705 if distance_from_selection < old_distance {
706 closest_assist_fallback =
707 Some((assist_id, distance_from_selection));
708 }
709 }
710 None => {
711 closest_assist_fallback = Some((assist_id, distance_from_selection))
712 }
713 }
714 }
715 }
716 }
717
718 if let Some((&assist_id, _)) = closest_assist_fallback {
719 self.focus_assist(assist_id, window, cx);
720 }
721 }
722
723 cx.propagate();
724 }
725
726 fn handle_editor_release(
727 &mut self,
728 editor: WeakEntity<Editor>,
729 window: &mut Window,
730 cx: &mut App,
731 ) {
732 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor) {
733 for assist_id in editor_assists.assist_ids.clone() {
734 self.finish_assist(assist_id, true, window, cx);
735 }
736 }
737 }
738
739 fn handle_editor_change(&mut self, editor: Entity<Editor>, window: &mut Window, cx: &mut App) {
740 let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) else {
741 return;
742 };
743 let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() else {
744 return;
745 };
746 let assist = &self.assists[&scroll_lock.assist_id];
747 let Some(decorations) = assist.decorations.as_ref() else {
748 return;
749 };
750
751 editor.update(cx, |editor, cx| {
752 let scroll_position = editor.scroll_position(cx);
753 let target_scroll_top = editor
754 .row_for_block(decorations.prompt_block_id, cx)
755 .unwrap()
756 .0 as f32
757 - scroll_lock.distance_from_top;
758 if target_scroll_top != scroll_position.y {
759 editor.set_scroll_position(point(scroll_position.x, target_scroll_top), window, cx);
760 }
761 });
762 }
763
764 fn handle_editor_event(
765 &mut self,
766 editor: Entity<Editor>,
767 event: &EditorEvent,
768 window: &mut Window,
769 cx: &mut App,
770 ) {
771 let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) else {
772 return;
773 };
774
775 match event {
776 EditorEvent::Edited { transaction_id } => {
777 let buffer = editor.read(cx).buffer().read(cx);
778 let edited_ranges =
779 buffer.edited_ranges_for_transaction::<usize>(*transaction_id, cx);
780 let snapshot = buffer.snapshot(cx);
781
782 for assist_id in editor_assists.assist_ids.clone() {
783 let assist = &self.assists[&assist_id];
784 if matches!(
785 assist.codegen.read(cx).status(cx),
786 CodegenStatus::Error(_) | CodegenStatus::Done
787 ) {
788 let assist_range = assist.range.to_offset(&snapshot);
789 if edited_ranges
790 .iter()
791 .any(|range| range.overlaps(&assist_range))
792 {
793 self.finish_assist(assist_id, false, window, cx);
794 }
795 }
796 }
797 }
798 EditorEvent::ScrollPositionChanged { .. } => {
799 if let Some(scroll_lock) = editor_assists.scroll_lock.as_ref() {
800 let assist = &self.assists[&scroll_lock.assist_id];
801 if let Some(decorations) = assist.decorations.as_ref() {
802 let distance_from_top = editor.update(cx, |editor, cx| {
803 let scroll_top = editor.scroll_position(cx).y;
804 let prompt_row = editor
805 .row_for_block(decorations.prompt_block_id, cx)
806 .unwrap()
807 .0 as f32;
808 prompt_row - scroll_top
809 });
810
811 if distance_from_top != scroll_lock.distance_from_top {
812 editor_assists.scroll_lock = None;
813 }
814 }
815 }
816 }
817 EditorEvent::SelectionsChanged { .. } => {
818 for assist_id in editor_assists.assist_ids.clone() {
819 let assist = &self.assists[&assist_id];
820 if let Some(decorations) = assist.decorations.as_ref() {
821 if decorations
822 .prompt_editor
823 .focus_handle(cx)
824 .is_focused(window)
825 {
826 return;
827 }
828 }
829 }
830
831 editor_assists.scroll_lock = None;
832 }
833 _ => {}
834 }
835 }
836
837 pub fn finish_assist(
838 &mut self,
839 assist_id: InlineAssistId,
840 undo: bool,
841 window: &mut Window,
842 cx: &mut App,
843 ) {
844 if let Some(assist) = self.assists.get(&assist_id) {
845 let assist_group_id = assist.group_id;
846 if self.assist_groups[&assist_group_id].linked {
847 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
848 self.finish_assist(assist_id, undo, window, cx);
849 }
850 return;
851 }
852 }
853
854 self.dismiss_assist(assist_id, window, cx);
855
856 if let Some(assist) = self.assists.remove(&assist_id) {
857 if let hash_map::Entry::Occupied(mut entry) = self.assist_groups.entry(assist.group_id)
858 {
859 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
860 if entry.get().assist_ids.is_empty() {
861 entry.remove();
862 }
863 }
864
865 if let hash_map::Entry::Occupied(mut entry) =
866 self.assists_by_editor.entry(assist.editor.clone())
867 {
868 entry.get_mut().assist_ids.retain(|id| *id != assist_id);
869 if entry.get().assist_ids.is_empty() {
870 entry.remove();
871 if let Some(editor) = assist.editor.upgrade() {
872 self.update_editor_highlights(&editor, cx);
873 }
874 } else {
875 entry.get().highlight_updates.send(()).ok();
876 }
877 }
878
879 let active_alternative = assist.codegen.read(cx).active_alternative().clone();
880 let message_id = active_alternative.read(cx).message_id.clone();
881
882 if let Some(ConfiguredModel { model, .. }) =
883 LanguageModelRegistry::read_global(cx).default_model()
884 {
885 let language_name = assist.editor.upgrade().and_then(|editor| {
886 let multibuffer = editor.read(cx).buffer().read(cx);
887 let multibuffer_snapshot = multibuffer.snapshot(cx);
888 let ranges = multibuffer_snapshot.range_to_buffer_ranges(assist.range.clone());
889 ranges
890 .first()
891 .and_then(|(buffer, _, _)| buffer.language())
892 .map(|language| language.name())
893 });
894 report_assistant_event(
895 AssistantEventData {
896 conversation_id: None,
897 kind: AssistantKind::Inline,
898 message_id,
899 phase: if undo {
900 AssistantPhase::Rejected
901 } else {
902 AssistantPhase::Accepted
903 },
904 model: model.telemetry_id(),
905 model_provider: model.provider_id().to_string(),
906 response_latency: None,
907 error_message: None,
908 language_name: language_name.map(|name| name.to_proto()),
909 },
910 Some(self.telemetry.clone()),
911 cx.http_client(),
912 model.api_key(cx),
913 cx.background_executor(),
914 );
915 }
916
917 if undo {
918 assist.codegen.update(cx, |codegen, cx| codegen.undo(cx));
919 } else {
920 self.confirmed_assists.insert(assist_id, active_alternative);
921 }
922 }
923 }
924
925 fn dismiss_assist(
926 &mut self,
927 assist_id: InlineAssistId,
928 window: &mut Window,
929 cx: &mut App,
930 ) -> bool {
931 let Some(assist) = self.assists.get_mut(&assist_id) else {
932 return false;
933 };
934 let Some(editor) = assist.editor.upgrade() else {
935 return false;
936 };
937 let Some(decorations) = assist.decorations.take() else {
938 return false;
939 };
940
941 editor.update(cx, |editor, cx| {
942 let mut to_remove = decorations.removed_line_block_ids;
943 to_remove.insert(decorations.prompt_block_id);
944 to_remove.insert(decorations.end_block_id);
945 editor.remove_blocks(to_remove, None, cx);
946 });
947
948 if decorations
949 .prompt_editor
950 .focus_handle(cx)
951 .contains_focused(window, cx)
952 {
953 self.focus_next_assist(assist_id, window, cx);
954 }
955
956 if let Some(editor_assists) = self.assists_by_editor.get_mut(&editor.downgrade()) {
957 if editor_assists
958 .scroll_lock
959 .as_ref()
960 .map_or(false, |lock| lock.assist_id == assist_id)
961 {
962 editor_assists.scroll_lock = None;
963 }
964 editor_assists.highlight_updates.send(()).ok();
965 }
966
967 true
968 }
969
970 fn focus_next_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
971 let Some(assist) = self.assists.get(&assist_id) else {
972 return;
973 };
974
975 let assist_group = &self.assist_groups[&assist.group_id];
976 let assist_ix = assist_group
977 .assist_ids
978 .iter()
979 .position(|id| *id == assist_id)
980 .unwrap();
981 let assist_ids = assist_group
982 .assist_ids
983 .iter()
984 .skip(assist_ix + 1)
985 .chain(assist_group.assist_ids.iter().take(assist_ix));
986
987 for assist_id in assist_ids {
988 let assist = &self.assists[assist_id];
989 if assist.decorations.is_some() {
990 self.focus_assist(*assist_id, window, cx);
991 return;
992 }
993 }
994
995 assist
996 .editor
997 .update(cx, |editor, cx| window.focus(&editor.focus_handle(cx)))
998 .ok();
999 }
1000
1001 fn focus_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
1002 let Some(assist) = self.assists.get(&assist_id) else {
1003 return;
1004 };
1005
1006 if let Some(decorations) = assist.decorations.as_ref() {
1007 decorations.prompt_editor.update(cx, |prompt_editor, cx| {
1008 prompt_editor.editor.update(cx, |editor, cx| {
1009 window.focus(&editor.focus_handle(cx));
1010 editor.select_all(&SelectAll, window, cx);
1011 })
1012 });
1013 }
1014
1015 self.scroll_to_assist(assist_id, window, cx);
1016 }
1017
1018 pub fn scroll_to_assist(
1019 &mut self,
1020 assist_id: InlineAssistId,
1021 window: &mut Window,
1022 cx: &mut App,
1023 ) {
1024 let Some(assist) = self.assists.get(&assist_id) else {
1025 return;
1026 };
1027 let Some(editor) = assist.editor.upgrade() else {
1028 return;
1029 };
1030
1031 let position = assist.range.start;
1032 editor.update(cx, |editor, cx| {
1033 editor.change_selections(None, window, cx, |selections| {
1034 selections.select_anchor_ranges([position..position])
1035 });
1036
1037 let mut scroll_target_top;
1038 let mut scroll_target_bottom;
1039 if let Some(decorations) = assist.decorations.as_ref() {
1040 scroll_target_top = editor
1041 .row_for_block(decorations.prompt_block_id, cx)
1042 .unwrap()
1043 .0 as f32;
1044 scroll_target_bottom = editor
1045 .row_for_block(decorations.end_block_id, cx)
1046 .unwrap()
1047 .0 as f32;
1048 } else {
1049 let snapshot = editor.snapshot(window, cx);
1050 let start_row = assist
1051 .range
1052 .start
1053 .to_display_point(&snapshot.display_snapshot)
1054 .row();
1055 scroll_target_top = start_row.0 as f32;
1056 scroll_target_bottom = scroll_target_top + 1.;
1057 }
1058 scroll_target_top -= editor.vertical_scroll_margin() as f32;
1059 scroll_target_bottom += editor.vertical_scroll_margin() as f32;
1060
1061 let height_in_lines = editor.visible_line_count().unwrap_or(0.);
1062 let scroll_top = editor.scroll_position(cx).y;
1063 let scroll_bottom = scroll_top + height_in_lines;
1064
1065 if scroll_target_top < scroll_top {
1066 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1067 } else if scroll_target_bottom > scroll_bottom {
1068 if (scroll_target_bottom - scroll_target_top) <= height_in_lines {
1069 editor.set_scroll_position(
1070 point(0., scroll_target_bottom - height_in_lines),
1071 window,
1072 cx,
1073 );
1074 } else {
1075 editor.set_scroll_position(point(0., scroll_target_top), window, cx);
1076 }
1077 }
1078 });
1079 }
1080
1081 fn unlink_assist_group(
1082 &mut self,
1083 assist_group_id: InlineAssistGroupId,
1084 window: &mut Window,
1085 cx: &mut App,
1086 ) -> Vec<InlineAssistId> {
1087 let assist_group = self.assist_groups.get_mut(&assist_group_id).unwrap();
1088 assist_group.linked = false;
1089 for assist_id in &assist_group.assist_ids {
1090 let assist = self.assists.get_mut(assist_id).unwrap();
1091 if let Some(editor_decorations) = assist.decorations.as_ref() {
1092 editor_decorations
1093 .prompt_editor
1094 .update(cx, |prompt_editor, cx| prompt_editor.unlink(window, cx));
1095 }
1096 }
1097 assist_group.assist_ids.clone()
1098 }
1099
1100 pub fn start_assist(&mut self, assist_id: InlineAssistId, window: &mut Window, cx: &mut App) {
1101 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1102 assist
1103 } else {
1104 return;
1105 };
1106
1107 let assist_group_id = assist.group_id;
1108 if self.assist_groups[&assist_group_id].linked {
1109 for assist_id in self.unlink_assist_group(assist_group_id, window, cx) {
1110 self.start_assist(assist_id, window, cx);
1111 }
1112 return;
1113 }
1114
1115 let Some(user_prompt) = assist.user_prompt(cx) else {
1116 return;
1117 };
1118
1119 self.prompt_history.retain(|prompt| *prompt != user_prompt);
1120 self.prompt_history.push_back(user_prompt.clone());
1121 if self.prompt_history.len() > PROMPT_HISTORY_MAX_LEN {
1122 self.prompt_history.pop_front();
1123 }
1124
1125 let assistant_panel_context = assist.assistant_panel_context(cx);
1126
1127 assist
1128 .codegen
1129 .update(cx, |codegen, cx| {
1130 codegen.start(user_prompt, assistant_panel_context, cx)
1131 })
1132 .log_err();
1133 }
1134
1135 pub fn stop_assist(&mut self, assist_id: InlineAssistId, cx: &mut App) {
1136 let assist = if let Some(assist) = self.assists.get_mut(&assist_id) {
1137 assist
1138 } else {
1139 return;
1140 };
1141
1142 assist.codegen.update(cx, |codegen, cx| codegen.stop(cx));
1143 }
1144
1145 fn update_editor_highlights(&self, editor: &Entity<Editor>, cx: &mut App) {
1146 let mut gutter_pending_ranges = Vec::new();
1147 let mut gutter_transformed_ranges = Vec::new();
1148 let mut foreground_ranges = Vec::new();
1149 let mut inserted_row_ranges = Vec::new();
1150 let empty_assist_ids = Vec::new();
1151 let assist_ids = self
1152 .assists_by_editor
1153 .get(&editor.downgrade())
1154 .map_or(&empty_assist_ids, |editor_assists| {
1155 &editor_assists.assist_ids
1156 });
1157
1158 for assist_id in assist_ids {
1159 if let Some(assist) = self.assists.get(assist_id) {
1160 let codegen = assist.codegen.read(cx);
1161 let buffer = codegen.buffer(cx).read(cx).read(cx);
1162 foreground_ranges.extend(codegen.last_equal_ranges(cx).iter().cloned());
1163
1164 let pending_range =
1165 codegen.edit_position(cx).unwrap_or(assist.range.start)..assist.range.end;
1166 if pending_range.end.to_offset(&buffer) > pending_range.start.to_offset(&buffer) {
1167 gutter_pending_ranges.push(pending_range);
1168 }
1169
1170 if let Some(edit_position) = codegen.edit_position(cx) {
1171 let edited_range = assist.range.start..edit_position;
1172 if edited_range.end.to_offset(&buffer) > edited_range.start.to_offset(&buffer) {
1173 gutter_transformed_ranges.push(edited_range);
1174 }
1175 }
1176
1177 if assist.decorations.is_some() {
1178 inserted_row_ranges
1179 .extend(codegen.diff(cx).inserted_row_ranges.iter().cloned());
1180 }
1181 }
1182 }
1183
1184 let snapshot = editor.read(cx).buffer().read(cx).snapshot(cx);
1185 merge_ranges(&mut foreground_ranges, &snapshot);
1186 merge_ranges(&mut gutter_pending_ranges, &snapshot);
1187 merge_ranges(&mut gutter_transformed_ranges, &snapshot);
1188 editor.update(cx, |editor, cx| {
1189 enum GutterPendingRange {}
1190 if gutter_pending_ranges.is_empty() {
1191 editor.clear_gutter_highlights::<GutterPendingRange>(cx);
1192 } else {
1193 editor.highlight_gutter::<GutterPendingRange>(
1194 &gutter_pending_ranges,
1195 |cx| cx.theme().status().info_background,
1196 cx,
1197 )
1198 }
1199
1200 enum GutterTransformedRange {}
1201 if gutter_transformed_ranges.is_empty() {
1202 editor.clear_gutter_highlights::<GutterTransformedRange>(cx);
1203 } else {
1204 editor.highlight_gutter::<GutterTransformedRange>(
1205 &gutter_transformed_ranges,
1206 |cx| cx.theme().status().info,
1207 cx,
1208 )
1209 }
1210
1211 if foreground_ranges.is_empty() {
1212 editor.clear_highlights::<InlineAssist>(cx);
1213 } else {
1214 editor.highlight_text::<InlineAssist>(
1215 foreground_ranges,
1216 HighlightStyle {
1217 fade_out: Some(0.6),
1218 ..Default::default()
1219 },
1220 cx,
1221 );
1222 }
1223
1224 editor.clear_row_highlights::<InlineAssist>();
1225 for row_range in inserted_row_ranges {
1226 editor.highlight_rows::<InlineAssist>(
1227 row_range,
1228 cx.theme().status().info_background,
1229 Default::default(),
1230 cx,
1231 );
1232 }
1233 });
1234 }
1235
1236 fn update_editor_blocks(
1237 &mut self,
1238 editor: &Entity<Editor>,
1239 assist_id: InlineAssistId,
1240 window: &mut Window,
1241 cx: &mut App,
1242 ) {
1243 let Some(assist) = self.assists.get_mut(&assist_id) else {
1244 return;
1245 };
1246 let Some(decorations) = assist.decorations.as_mut() else {
1247 return;
1248 };
1249
1250 let codegen = assist.codegen.read(cx);
1251 let old_snapshot = codegen.snapshot(cx);
1252 let old_buffer = codegen.old_buffer(cx);
1253 let deleted_row_ranges = codegen.diff(cx).deleted_row_ranges.clone();
1254
1255 editor.update(cx, |editor, cx| {
1256 let old_blocks = mem::take(&mut decorations.removed_line_block_ids);
1257 editor.remove_blocks(old_blocks, None, cx);
1258
1259 let mut new_blocks = Vec::new();
1260 for (new_row, old_row_range) in deleted_row_ranges {
1261 let (_, buffer_start) = old_snapshot
1262 .point_to_buffer_offset(Point::new(*old_row_range.start(), 0))
1263 .unwrap();
1264 let (_, buffer_end) = old_snapshot
1265 .point_to_buffer_offset(Point::new(
1266 *old_row_range.end(),
1267 old_snapshot.line_len(MultiBufferRow(*old_row_range.end())),
1268 ))
1269 .unwrap();
1270
1271 let deleted_lines_editor = cx.new(|cx| {
1272 let multi_buffer =
1273 cx.new(|_| MultiBuffer::without_headers(language::Capability::ReadOnly));
1274 multi_buffer.update(cx, |multi_buffer, cx| {
1275 multi_buffer.push_excerpts(
1276 old_buffer.clone(),
1277 Some(ExcerptRange::new(buffer_start..buffer_end)),
1278 cx,
1279 );
1280 });
1281
1282 enum DeletedLines {}
1283 let mut editor = Editor::for_multibuffer(multi_buffer, None, window, cx);
1284 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::None, cx);
1285 editor.set_show_wrap_guides(false, cx);
1286 editor.set_show_gutter(false, cx);
1287 editor.scroll_manager.set_forbid_vertical_scroll(true);
1288 editor.set_show_scrollbars(false, cx);
1289 editor.set_read_only(true);
1290 editor.set_show_edit_predictions(Some(false), window, cx);
1291 editor.highlight_rows::<DeletedLines>(
1292 Anchor::min()..Anchor::max(),
1293 cx.theme().status().deleted_background,
1294 Default::default(),
1295 cx,
1296 );
1297 editor
1298 });
1299
1300 let height =
1301 deleted_lines_editor.update(cx, |editor, cx| editor.max_point(cx).row().0 + 1);
1302 new_blocks.push(BlockProperties {
1303 placement: BlockPlacement::Above(new_row),
1304 height: Some(height),
1305 style: BlockStyle::Flex,
1306 render: Arc::new(move |cx| {
1307 div()
1308 .block_mouse_down()
1309 .bg(cx.theme().status().deleted_background)
1310 .size_full()
1311 .h(height as f32 * cx.window.line_height())
1312 .pl(cx.gutter_dimensions.full_width())
1313 .child(deleted_lines_editor.clone())
1314 .into_any_element()
1315 }),
1316 priority: 0,
1317 });
1318 }
1319
1320 decorations.removed_line_block_ids = editor
1321 .insert_blocks(new_blocks, None, cx)
1322 .into_iter()
1323 .collect();
1324 })
1325 }
1326}
1327
1328struct EditorInlineAssists {
1329 assist_ids: Vec<InlineAssistId>,
1330 scroll_lock: Option<InlineAssistScrollLock>,
1331 highlight_updates: async_watch::Sender<()>,
1332 _update_highlights: Task<Result<()>>,
1333 _subscriptions: Vec<gpui::Subscription>,
1334}
1335
1336struct InlineAssistScrollLock {
1337 assist_id: InlineAssistId,
1338 distance_from_top: f32,
1339}
1340
1341impl EditorInlineAssists {
1342 fn new(editor: &Entity<Editor>, window: &mut Window, cx: &mut App) -> Self {
1343 let (highlight_updates_tx, mut highlight_updates_rx) = async_watch::channel(());
1344 Self {
1345 assist_ids: Vec::new(),
1346 scroll_lock: None,
1347 highlight_updates: highlight_updates_tx,
1348 _update_highlights: cx.spawn({
1349 let editor = editor.downgrade();
1350 async move |cx| {
1351 while let Ok(()) = highlight_updates_rx.changed().await {
1352 let editor = editor.upgrade().context("editor was dropped")?;
1353 cx.update_global(|assistant: &mut InlineAssistant, cx| {
1354 assistant.update_editor_highlights(&editor, cx);
1355 })?;
1356 }
1357 Ok(())
1358 }
1359 }),
1360 _subscriptions: vec![
1361 cx.observe_release_in(editor, window, {
1362 let editor = editor.downgrade();
1363 |_, window, cx| {
1364 InlineAssistant::update_global(cx, |this, cx| {
1365 this.handle_editor_release(editor, window, cx);
1366 })
1367 }
1368 }),
1369 window.observe(editor, cx, move |editor, window, cx| {
1370 InlineAssistant::update_global(cx, |this, cx| {
1371 this.handle_editor_change(editor, window, cx)
1372 })
1373 }),
1374 window.subscribe(editor, cx, move |editor, event, window, cx| {
1375 InlineAssistant::update_global(cx, |this, cx| {
1376 this.handle_editor_event(editor, event, window, cx)
1377 })
1378 }),
1379 editor.update(cx, |editor, cx| {
1380 let editor_handle = cx.entity().downgrade();
1381 editor.register_action(move |_: &editor::actions::Newline, window, cx| {
1382 InlineAssistant::update_global(cx, |this, cx| {
1383 if let Some(editor) = editor_handle.upgrade() {
1384 this.handle_editor_newline(editor, window, cx)
1385 }
1386 })
1387 })
1388 }),
1389 editor.update(cx, |editor, cx| {
1390 let editor_handle = cx.entity().downgrade();
1391 editor.register_action(move |_: &editor::actions::Cancel, window, cx| {
1392 InlineAssistant::update_global(cx, |this, cx| {
1393 if let Some(editor) = editor_handle.upgrade() {
1394 this.handle_editor_cancel(editor, window, cx)
1395 }
1396 })
1397 })
1398 }),
1399 ],
1400 }
1401 }
1402}
1403
1404struct InlineAssistGroup {
1405 assist_ids: Vec<InlineAssistId>,
1406 linked: bool,
1407 active_assist_id: Option<InlineAssistId>,
1408}
1409
1410impl InlineAssistGroup {
1411 fn new() -> Self {
1412 Self {
1413 assist_ids: Vec::new(),
1414 linked: true,
1415 active_assist_id: None,
1416 }
1417 }
1418}
1419
1420fn build_assist_editor_renderer(editor: &Entity<PromptEditor>) -> RenderBlock {
1421 let editor = editor.clone();
1422 Arc::new(move |cx: &mut BlockContext| {
1423 *editor.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
1424 editor.clone().into_any_element()
1425 })
1426}
1427
1428#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1429pub struct InlineAssistId(usize);
1430
1431impl InlineAssistId {
1432 fn post_inc(&mut self) -> InlineAssistId {
1433 let id = *self;
1434 self.0 += 1;
1435 id
1436 }
1437}
1438
1439#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
1440struct InlineAssistGroupId(usize);
1441
1442impl InlineAssistGroupId {
1443 fn post_inc(&mut self) -> InlineAssistGroupId {
1444 let id = *self;
1445 self.0 += 1;
1446 id
1447 }
1448}
1449
1450enum PromptEditorEvent {
1451 StartRequested,
1452 StopRequested,
1453 ConfirmRequested,
1454 CancelRequested,
1455 DismissRequested,
1456}
1457
1458struct PromptEditor {
1459 id: InlineAssistId,
1460 editor: Entity<Editor>,
1461 language_model_selector: Entity<LanguageModelSelector>,
1462 edited_since_done: bool,
1463 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1464 prompt_history: VecDeque<String>,
1465 prompt_history_ix: Option<usize>,
1466 pending_prompt: String,
1467 codegen: Entity<Codegen>,
1468 _codegen_subscription: Subscription,
1469 editor_subscriptions: Vec<Subscription>,
1470 pending_token_count: Task<Result<()>>,
1471 token_counts: Option<TokenCounts>,
1472 _token_count_subscriptions: Vec<Subscription>,
1473 workspace: Option<WeakEntity<Workspace>>,
1474 show_rate_limit_notice: bool,
1475}
1476
1477#[derive(Copy, Clone)]
1478pub struct TokenCounts {
1479 total: usize,
1480 assistant_panel: usize,
1481}
1482
1483impl EventEmitter<PromptEditorEvent> for PromptEditor {}
1484
1485impl Render for PromptEditor {
1486 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1487 let gutter_dimensions = *self.gutter_dimensions.lock();
1488 let codegen = self.codegen.read(cx);
1489
1490 let mut buttons = Vec::new();
1491 if codegen.alternative_count(cx) > 1 {
1492 buttons.push(self.render_cycle_controls(cx));
1493 }
1494
1495 let status = codegen.status(cx);
1496 buttons.extend(match status {
1497 CodegenStatus::Idle => {
1498 vec![
1499 IconButton::new("cancel", IconName::Close)
1500 .icon_color(Color::Muted)
1501 .shape(IconButtonShape::Square)
1502 .tooltip(|window, cx| {
1503 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1504 })
1505 .on_click(
1506 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1507 )
1508 .into_any_element(),
1509 IconButton::new("start", IconName::SparkleAlt)
1510 .icon_color(Color::Muted)
1511 .shape(IconButtonShape::Square)
1512 .tooltip(|window, cx| {
1513 Tooltip::for_action("Transform", &menu::Confirm, window, cx)
1514 })
1515 .on_click(
1516 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StartRequested)),
1517 )
1518 .into_any_element(),
1519 ]
1520 }
1521 CodegenStatus::Pending => {
1522 vec![
1523 IconButton::new("cancel", IconName::Close)
1524 .icon_color(Color::Muted)
1525 .shape(IconButtonShape::Square)
1526 .tooltip(Tooltip::text("Cancel Assist"))
1527 .on_click(
1528 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1529 )
1530 .into_any_element(),
1531 IconButton::new("stop", IconName::Stop)
1532 .icon_color(Color::Error)
1533 .shape(IconButtonShape::Square)
1534 .tooltip(|window, cx| {
1535 Tooltip::with_meta(
1536 "Interrupt Transformation",
1537 Some(&menu::Cancel),
1538 "Changes won't be discarded",
1539 window,
1540 cx,
1541 )
1542 })
1543 .on_click(
1544 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::StopRequested)),
1545 )
1546 .into_any_element(),
1547 ]
1548 }
1549 CodegenStatus::Error(_) | CodegenStatus::Done => {
1550 let must_rerun =
1551 self.edited_since_done || matches!(status, CodegenStatus::Error(_));
1552 // when accept button isn't visible, then restart maps to confirm
1553 // when accept button is visible, then restart must be mapped to an alternate keyboard shortcut
1554 let restart_key: &dyn gpui::Action = if must_rerun {
1555 &menu::Confirm
1556 } else {
1557 &menu::Restart
1558 };
1559 vec![
1560 IconButton::new("cancel", IconName::Close)
1561 .icon_color(Color::Muted)
1562 .shape(IconButtonShape::Square)
1563 .tooltip(|window, cx| {
1564 Tooltip::for_action("Cancel Assist", &menu::Cancel, window, cx)
1565 })
1566 .on_click(
1567 cx.listener(|_, _, _, cx| cx.emit(PromptEditorEvent::CancelRequested)),
1568 )
1569 .into_any_element(),
1570 IconButton::new("restart", IconName::RotateCw)
1571 .icon_color(Color::Muted)
1572 .shape(IconButtonShape::Square)
1573 .tooltip(|window, cx| {
1574 Tooltip::with_meta(
1575 "Regenerate Transformation",
1576 Some(restart_key),
1577 "Current change will be discarded",
1578 window,
1579 cx,
1580 )
1581 })
1582 .on_click(cx.listener(|_, _, _, cx| {
1583 cx.emit(PromptEditorEvent::StartRequested);
1584 }))
1585 .into_any_element(),
1586 if !must_rerun {
1587 IconButton::new("confirm", IconName::Check)
1588 .icon_color(Color::Info)
1589 .shape(IconButtonShape::Square)
1590 .tooltip(|window, cx| {
1591 Tooltip::for_action("Confirm Assist", &menu::Confirm, window, cx)
1592 })
1593 .on_click(cx.listener(|_, _, _, cx| {
1594 cx.emit(PromptEditorEvent::ConfirmRequested);
1595 }))
1596 .into_any_element()
1597 } else {
1598 div().into_any_element()
1599 },
1600 ]
1601 }
1602 });
1603
1604 h_flex()
1605 .key_context("PromptEditor")
1606 .bg(cx.theme().colors().editor_background)
1607 .block_mouse_down()
1608 .cursor(CursorStyle::Arrow)
1609 .border_y_1()
1610 .border_color(cx.theme().status().info_border)
1611 .size_full()
1612 .py(window.line_height() / 2.5)
1613 .on_action(cx.listener(Self::confirm))
1614 .on_action(cx.listener(Self::cancel))
1615 .on_action(cx.listener(Self::restart))
1616 .on_action(cx.listener(Self::move_up))
1617 .on_action(cx.listener(Self::move_down))
1618 .capture_action(cx.listener(Self::cycle_prev))
1619 .capture_action(cx.listener(Self::cycle_next))
1620 .child(
1621 h_flex()
1622 .w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0))
1623 .justify_center()
1624 .gap_2()
1625 .child(LanguageModelSelectorPopoverMenu::new(
1626 self.language_model_selector.clone(),
1627 IconButton::new("context", IconName::SettingsAlt)
1628 .shape(IconButtonShape::Square)
1629 .icon_size(IconSize::Small)
1630 .icon_color(Color::Muted),
1631 move |window, cx| {
1632 Tooltip::with_meta(
1633 format!(
1634 "Using {}",
1635 LanguageModelRegistry::read_global(cx)
1636 .default_model()
1637 .map(|default| default.model.name().0)
1638 .unwrap_or_else(|| "No model selected".into()),
1639 ),
1640 None,
1641 "Change Model",
1642 window,
1643 cx,
1644 )
1645 },
1646 gpui::Corner::TopRight,
1647 ))
1648 .map(|el| {
1649 let CodegenStatus::Error(error) = self.codegen.read(cx).status(cx) else {
1650 return el;
1651 };
1652
1653 let error_message = SharedString::from(error.to_string());
1654 if error.error_code() == proto::ErrorCode::RateLimitExceeded
1655 && cx.has_flag::<ZedProFeatureFlag>()
1656 {
1657 el.child(
1658 v_flex()
1659 .child(
1660 IconButton::new("rate-limit-error", IconName::XCircle)
1661 .toggle_state(self.show_rate_limit_notice)
1662 .shape(IconButtonShape::Square)
1663 .icon_size(IconSize::Small)
1664 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
1665 )
1666 .children(self.show_rate_limit_notice.then(|| {
1667 deferred(
1668 anchored()
1669 .position_mode(gpui::AnchoredPositionMode::Local)
1670 .position(point(px(0.), px(24.)))
1671 .anchor(gpui::Corner::TopLeft)
1672 .child(self.render_rate_limit_notice(cx)),
1673 )
1674 })),
1675 )
1676 } else {
1677 el.child(
1678 div()
1679 .id("error")
1680 .tooltip(Tooltip::text(error_message))
1681 .child(
1682 Icon::new(IconName::XCircle)
1683 .size(IconSize::Small)
1684 .color(Color::Error),
1685 ),
1686 )
1687 }
1688 }),
1689 )
1690 .child(div().flex_1().child(self.render_prompt_editor(cx)))
1691 .child(
1692 h_flex()
1693 .gap_2()
1694 .pr_6()
1695 .children(self.render_token_count(cx))
1696 .children(buttons),
1697 )
1698 }
1699}
1700
1701impl Focusable for PromptEditor {
1702 fn focus_handle(&self, cx: &App) -> FocusHandle {
1703 self.editor.focus_handle(cx)
1704 }
1705}
1706
1707impl PromptEditor {
1708 const MAX_LINES: u8 = 8;
1709
1710 fn new(
1711 id: InlineAssistId,
1712 gutter_dimensions: Arc<Mutex<GutterDimensions>>,
1713 prompt_history: VecDeque<String>,
1714 prompt_buffer: Entity<MultiBuffer>,
1715 codegen: Entity<Codegen>,
1716 parent_editor: &Entity<Editor>,
1717 assistant_panel: Option<&Entity<AssistantPanel>>,
1718 workspace: Option<WeakEntity<Workspace>>,
1719 fs: Arc<dyn Fs>,
1720 window: &mut Window,
1721 cx: &mut Context<Self>,
1722 ) -> Self {
1723 let prompt_editor = cx.new(|cx| {
1724 let mut editor = Editor::new(
1725 EditorMode::AutoHeight {
1726 max_lines: Self::MAX_LINES as usize,
1727 },
1728 prompt_buffer,
1729 None,
1730 window,
1731 cx,
1732 );
1733 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1734 // Since the prompt editors for all inline assistants are linked,
1735 // always show the cursor (even when it isn't focused) because
1736 // typing in one will make what you typed appear in all of them.
1737 editor.set_show_cursor_when_unfocused(true, cx);
1738 editor.set_placeholder_text(Self::placeholder_text(codegen.read(cx), window, cx), cx);
1739 editor
1740 });
1741
1742 let mut token_count_subscriptions = Vec::new();
1743 token_count_subscriptions.push(cx.subscribe_in(
1744 parent_editor,
1745 window,
1746 Self::handle_parent_editor_event,
1747 ));
1748 if let Some(assistant_panel) = assistant_panel {
1749 token_count_subscriptions.push(cx.subscribe_in(
1750 assistant_panel,
1751 window,
1752 Self::handle_assistant_panel_event,
1753 ));
1754 }
1755
1756 let mut this = Self {
1757 id,
1758 editor: prompt_editor,
1759 language_model_selector: cx.new(|cx| {
1760 let fs = fs.clone();
1761 LanguageModelSelector::new(
1762 move |model, cx| {
1763 update_settings_file::<AssistantSettings>(
1764 fs.clone(),
1765 cx,
1766 move |settings, _| settings.set_model(model.clone()),
1767 );
1768 },
1769 ModelType::Default,
1770 window,
1771 cx,
1772 )
1773 }),
1774 edited_since_done: false,
1775 gutter_dimensions,
1776 prompt_history,
1777 prompt_history_ix: None,
1778 pending_prompt: String::new(),
1779 _codegen_subscription: cx.observe(&codegen, Self::handle_codegen_changed),
1780 editor_subscriptions: Vec::new(),
1781 codegen,
1782 pending_token_count: Task::ready(Ok(())),
1783 token_counts: None,
1784 _token_count_subscriptions: token_count_subscriptions,
1785 workspace,
1786 show_rate_limit_notice: false,
1787 };
1788 this.count_tokens(cx);
1789 this.subscribe_to_editor(window, cx);
1790 this
1791 }
1792
1793 fn subscribe_to_editor(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1794 self.editor_subscriptions.clear();
1795 self.editor_subscriptions.push(cx.subscribe_in(
1796 &self.editor,
1797 window,
1798 Self::handle_prompt_editor_events,
1799 ));
1800 }
1801
1802 fn set_show_cursor_when_unfocused(
1803 &mut self,
1804 show_cursor_when_unfocused: bool,
1805 cx: &mut Context<Self>,
1806 ) {
1807 self.editor.update(cx, |editor, cx| {
1808 editor.set_show_cursor_when_unfocused(show_cursor_when_unfocused, cx)
1809 });
1810 }
1811
1812 fn unlink(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1813 let prompt = self.prompt(cx);
1814 let focus = self.editor.focus_handle(cx).contains_focused(window, cx);
1815 self.editor = cx.new(|cx| {
1816 let mut editor = Editor::auto_height(Self::MAX_LINES as usize, window, cx);
1817 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
1818 editor.set_placeholder_text(
1819 Self::placeholder_text(self.codegen.read(cx), window, cx),
1820 cx,
1821 );
1822 editor.set_placeholder_text("Add a prompt…", cx);
1823 editor.set_text(prompt, window, cx);
1824 if focus {
1825 window.focus(&editor.focus_handle(cx));
1826 }
1827 editor
1828 });
1829 self.subscribe_to_editor(window, cx);
1830 }
1831
1832 fn placeholder_text(codegen: &Codegen, window: &Window, cx: &App) -> String {
1833 let context_keybinding = text_for_action(&zed_actions::assistant::ToggleFocus, window, cx)
1834 .map(|keybinding| format!(" • {keybinding} for context"))
1835 .unwrap_or_default();
1836
1837 let action = if codegen.is_insertion {
1838 "Generate"
1839 } else {
1840 "Transform"
1841 };
1842
1843 format!("{action}…{context_keybinding} • ↓↑ for history")
1844 }
1845
1846 fn prompt(&self, cx: &App) -> String {
1847 self.editor.read(cx).text(cx)
1848 }
1849
1850 fn toggle_rate_limit_notice(
1851 &mut self,
1852 _: &ClickEvent,
1853 window: &mut Window,
1854 cx: &mut Context<Self>,
1855 ) {
1856 self.show_rate_limit_notice = !self.show_rate_limit_notice;
1857 if self.show_rate_limit_notice {
1858 window.focus(&self.editor.focus_handle(cx));
1859 }
1860 cx.notify();
1861 }
1862
1863 fn handle_parent_editor_event(
1864 &mut self,
1865 _: &Entity<Editor>,
1866 event: &EditorEvent,
1867 _: &mut Window,
1868 cx: &mut Context<Self>,
1869 ) {
1870 if let EditorEvent::BufferEdited { .. } = event {
1871 self.count_tokens(cx);
1872 }
1873 }
1874
1875 fn handle_assistant_panel_event(
1876 &mut self,
1877 _: &Entity<AssistantPanel>,
1878 event: &AssistantPanelEvent,
1879 _: &mut Window,
1880 cx: &mut Context<Self>,
1881 ) {
1882 let AssistantPanelEvent::ContextEdited { .. } = event;
1883 self.count_tokens(cx);
1884 }
1885
1886 fn count_tokens(&mut self, cx: &mut Context<Self>) {
1887 let assist_id = self.id;
1888 self.pending_token_count = cx.spawn(async move |this, cx| {
1889 cx.background_executor().timer(Duration::from_secs(1)).await;
1890 let token_count = cx
1891 .update_global(|inline_assistant: &mut InlineAssistant, cx| {
1892 let assist = inline_assistant
1893 .assists
1894 .get(&assist_id)
1895 .context("assist not found")?;
1896 anyhow::Ok(assist.count_tokens(cx))
1897 })??
1898 .await?;
1899
1900 this.update(cx, |this, cx| {
1901 this.token_counts = Some(token_count);
1902 cx.notify();
1903 })
1904 })
1905 }
1906
1907 fn handle_prompt_editor_events(
1908 &mut self,
1909 _: &Entity<Editor>,
1910 event: &EditorEvent,
1911 window: &mut Window,
1912 cx: &mut Context<Self>,
1913 ) {
1914 match event {
1915 EditorEvent::Edited { .. } => {
1916 if let Some(workspace) = window.root::<Workspace>().flatten() {
1917 workspace.update(cx, |workspace, cx| {
1918 let is_via_ssh = workspace
1919 .project()
1920 .update(cx, |project, _| project.is_via_ssh());
1921
1922 workspace
1923 .client()
1924 .telemetry()
1925 .log_edit_event("inline assist", is_via_ssh);
1926 });
1927 }
1928 let prompt = self.editor.read(cx).text(cx);
1929 if self
1930 .prompt_history_ix
1931 .map_or(true, |ix| self.prompt_history[ix] != prompt)
1932 {
1933 self.prompt_history_ix.take();
1934 self.pending_prompt = prompt;
1935 }
1936
1937 self.edited_since_done = true;
1938 cx.notify();
1939 }
1940 EditorEvent::BufferEdited => {
1941 self.count_tokens(cx);
1942 }
1943 EditorEvent::Blurred => {
1944 if self.show_rate_limit_notice {
1945 self.show_rate_limit_notice = false;
1946 cx.notify();
1947 }
1948 }
1949 _ => {}
1950 }
1951 }
1952
1953 fn handle_codegen_changed(&mut self, _: Entity<Codegen>, cx: &mut Context<Self>) {
1954 match self.codegen.read(cx).status(cx) {
1955 CodegenStatus::Idle => {
1956 self.editor
1957 .update(cx, |editor, _| editor.set_read_only(false));
1958 }
1959 CodegenStatus::Pending => {
1960 self.editor
1961 .update(cx, |editor, _| editor.set_read_only(true));
1962 }
1963 CodegenStatus::Done => {
1964 self.edited_since_done = false;
1965 self.editor
1966 .update(cx, |editor, _| editor.set_read_only(false));
1967 }
1968 CodegenStatus::Error(error) => {
1969 if cx.has_flag::<ZedProFeatureFlag>()
1970 && error.error_code() == proto::ErrorCode::RateLimitExceeded
1971 && !dismissed_rate_limit_notice()
1972 {
1973 self.show_rate_limit_notice = true;
1974 cx.notify();
1975 }
1976
1977 self.edited_since_done = false;
1978 self.editor
1979 .update(cx, |editor, _| editor.set_read_only(false));
1980 }
1981 }
1982 }
1983
1984 fn restart(&mut self, _: &menu::Restart, _window: &mut Window, cx: &mut Context<Self>) {
1985 cx.emit(PromptEditorEvent::StartRequested);
1986 }
1987
1988 fn cancel(
1989 &mut self,
1990 _: &editor::actions::Cancel,
1991 _window: &mut Window,
1992 cx: &mut Context<Self>,
1993 ) {
1994 match self.codegen.read(cx).status(cx) {
1995 CodegenStatus::Idle | CodegenStatus::Done | CodegenStatus::Error(_) => {
1996 cx.emit(PromptEditorEvent::CancelRequested);
1997 }
1998 CodegenStatus::Pending => {
1999 cx.emit(PromptEditorEvent::StopRequested);
2000 }
2001 }
2002 }
2003
2004 fn confirm(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
2005 match self.codegen.read(cx).status(cx) {
2006 CodegenStatus::Idle => {
2007 cx.emit(PromptEditorEvent::StartRequested);
2008 }
2009 CodegenStatus::Pending => {
2010 cx.emit(PromptEditorEvent::DismissRequested);
2011 }
2012 CodegenStatus::Done => {
2013 if self.edited_since_done {
2014 cx.emit(PromptEditorEvent::StartRequested);
2015 } else {
2016 cx.emit(PromptEditorEvent::ConfirmRequested);
2017 }
2018 }
2019 CodegenStatus::Error(_) => {
2020 cx.emit(PromptEditorEvent::StartRequested);
2021 }
2022 }
2023 }
2024
2025 fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
2026 if let Some(ix) = self.prompt_history_ix {
2027 if ix > 0 {
2028 self.prompt_history_ix = Some(ix - 1);
2029 let prompt = self.prompt_history[ix - 1].as_str();
2030 self.editor.update(cx, |editor, cx| {
2031 editor.set_text(prompt, window, cx);
2032 editor.move_to_beginning(&Default::default(), window, cx);
2033 });
2034 }
2035 } else if !self.prompt_history.is_empty() {
2036 self.prompt_history_ix = Some(self.prompt_history.len() - 1);
2037 let prompt = self.prompt_history[self.prompt_history.len() - 1].as_str();
2038 self.editor.update(cx, |editor, cx| {
2039 editor.set_text(prompt, window, cx);
2040 editor.move_to_beginning(&Default::default(), window, cx);
2041 });
2042 }
2043 }
2044
2045 fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
2046 if let Some(ix) = self.prompt_history_ix {
2047 if ix < self.prompt_history.len() - 1 {
2048 self.prompt_history_ix = Some(ix + 1);
2049 let prompt = self.prompt_history[ix + 1].as_str();
2050 self.editor.update(cx, |editor, cx| {
2051 editor.set_text(prompt, window, cx);
2052 editor.move_to_end(&Default::default(), window, cx)
2053 });
2054 } else {
2055 self.prompt_history_ix = None;
2056 let prompt = self.pending_prompt.as_str();
2057 self.editor.update(cx, |editor, cx| {
2058 editor.set_text(prompt, window, cx);
2059 editor.move_to_end(&Default::default(), window, cx)
2060 });
2061 }
2062 }
2063 }
2064
2065 fn cycle_prev(
2066 &mut self,
2067 _: &CyclePreviousInlineAssist,
2068 _: &mut Window,
2069 cx: &mut Context<Self>,
2070 ) {
2071 self.codegen
2072 .update(cx, |codegen, cx| codegen.cycle_prev(cx));
2073 }
2074
2075 fn cycle_next(&mut self, _: &CycleNextInlineAssist, _: &mut Window, cx: &mut Context<Self>) {
2076 self.codegen
2077 .update(cx, |codegen, cx| codegen.cycle_next(cx));
2078 }
2079
2080 fn render_cycle_controls(&self, cx: &Context<Self>) -> AnyElement {
2081 let codegen = self.codegen.read(cx);
2082 let disabled = matches!(codegen.status(cx), CodegenStatus::Idle);
2083
2084 let model_registry = LanguageModelRegistry::read_global(cx);
2085 let default_model = model_registry.default_model().map(|default| default.model);
2086 let alternative_models = model_registry.inline_alternative_models();
2087
2088 let get_model_name = |index: usize| -> String {
2089 let name = |model: &Arc<dyn LanguageModel>| model.name().0.to_string();
2090
2091 match index {
2092 0 => default_model.as_ref().map_or_else(String::new, name),
2093 index if index <= alternative_models.len() => alternative_models
2094 .get(index - 1)
2095 .map_or_else(String::new, name),
2096 _ => String::new(),
2097 }
2098 };
2099
2100 let total_models = alternative_models.len() + 1;
2101
2102 if total_models <= 1 {
2103 return div().into_any_element();
2104 }
2105
2106 let current_index = codegen.active_alternative;
2107 let prev_index = (current_index + total_models - 1) % total_models;
2108 let next_index = (current_index + 1) % total_models;
2109
2110 let prev_model_name = get_model_name(prev_index);
2111 let next_model_name = get_model_name(next_index);
2112
2113 h_flex()
2114 .child(
2115 IconButton::new("previous", IconName::ChevronLeft)
2116 .icon_color(Color::Muted)
2117 .disabled(disabled || current_index == 0)
2118 .shape(IconButtonShape::Square)
2119 .tooltip({
2120 let focus_handle = self.editor.focus_handle(cx);
2121 move |window, cx| {
2122 cx.new(|cx| {
2123 let mut tooltip = Tooltip::new("Previous Alternative").key_binding(
2124 KeyBinding::for_action_in(
2125 &CyclePreviousInlineAssist,
2126 &focus_handle,
2127 window,
2128 cx,
2129 ),
2130 );
2131 if !disabled && current_index != 0 {
2132 tooltip = tooltip.meta(prev_model_name.clone());
2133 }
2134 tooltip
2135 })
2136 .into()
2137 }
2138 })
2139 .on_click(cx.listener(|this, _, _, cx| {
2140 this.codegen
2141 .update(cx, |codegen, cx| codegen.cycle_prev(cx))
2142 })),
2143 )
2144 .child(
2145 Label::new(format!(
2146 "{}/{}",
2147 codegen.active_alternative + 1,
2148 codegen.alternative_count(cx)
2149 ))
2150 .size(LabelSize::Small)
2151 .color(if disabled {
2152 Color::Disabled
2153 } else {
2154 Color::Muted
2155 }),
2156 )
2157 .child(
2158 IconButton::new("next", IconName::ChevronRight)
2159 .icon_color(Color::Muted)
2160 .disabled(disabled || current_index == total_models - 1)
2161 .shape(IconButtonShape::Square)
2162 .tooltip({
2163 let focus_handle = self.editor.focus_handle(cx);
2164 move |window, cx| {
2165 cx.new(|cx| {
2166 let mut tooltip = Tooltip::new("Next Alternative").key_binding(
2167 KeyBinding::for_action_in(
2168 &CycleNextInlineAssist,
2169 &focus_handle,
2170 window,
2171 cx,
2172 ),
2173 );
2174 if !disabled && current_index != total_models - 1 {
2175 tooltip = tooltip.meta(next_model_name.clone());
2176 }
2177 tooltip
2178 })
2179 .into()
2180 }
2181 })
2182 .on_click(cx.listener(|this, _, _, cx| {
2183 this.codegen
2184 .update(cx, |codegen, cx| codegen.cycle_next(cx))
2185 })),
2186 )
2187 .into_any_element()
2188 }
2189
2190 fn render_token_count(&self, cx: &mut Context<Self>) -> Option<impl IntoElement> {
2191 let model = LanguageModelRegistry::read_global(cx)
2192 .default_model()?
2193 .model;
2194 let token_counts = self.token_counts?;
2195 let max_token_count = model.max_token_count();
2196
2197 let remaining_tokens = max_token_count as isize - token_counts.total as isize;
2198 let token_count_color = if remaining_tokens <= 0 {
2199 Color::Error
2200 } else if token_counts.total as f32 / max_token_count as f32 >= 0.8 {
2201 Color::Warning
2202 } else {
2203 Color::Muted
2204 };
2205
2206 let mut token_count = h_flex()
2207 .id("token_count")
2208 .gap_0p5()
2209 .child(
2210 Label::new(humanize_token_count(token_counts.total))
2211 .size(LabelSize::Small)
2212 .color(token_count_color),
2213 )
2214 .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
2215 .child(
2216 Label::new(humanize_token_count(max_token_count))
2217 .size(LabelSize::Small)
2218 .color(Color::Muted),
2219 );
2220 if let Some(workspace) = self.workspace.clone() {
2221 token_count = token_count
2222 .tooltip(move |window, cx| {
2223 Tooltip::with_meta(
2224 format!(
2225 "Tokens Used ({} from the Assistant Panel)",
2226 humanize_token_count(token_counts.assistant_panel)
2227 ),
2228 None,
2229 "Click to open the Assistant Panel",
2230 window,
2231 cx,
2232 )
2233 })
2234 .cursor_pointer()
2235 .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| cx.stop_propagation())
2236 .on_click(move |_, window, cx| {
2237 cx.stop_propagation();
2238 workspace
2239 .update(cx, |workspace, cx| {
2240 workspace.focus_panel::<AssistantPanel>(window, cx)
2241 })
2242 .ok();
2243 });
2244 } else {
2245 token_count = token_count
2246 .cursor_default()
2247 .tooltip(Tooltip::text("Tokens used"));
2248 }
2249
2250 Some(token_count)
2251 }
2252
2253 fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
2254 let settings = ThemeSettings::get_global(cx);
2255 let text_style = TextStyle {
2256 color: if self.editor.read(cx).read_only(cx) {
2257 cx.theme().colors().text_disabled
2258 } else {
2259 cx.theme().colors().text
2260 },
2261 font_family: settings.buffer_font.family.clone(),
2262 font_fallbacks: settings.buffer_font.fallbacks.clone(),
2263 font_size: settings.buffer_font_size(cx).into(),
2264 font_weight: settings.buffer_font.weight,
2265 line_height: relative(settings.buffer_line_height.value()),
2266 ..Default::default()
2267 };
2268 EditorElement::new(
2269 &self.editor,
2270 EditorStyle {
2271 background: cx.theme().colors().editor_background,
2272 local_player: cx.theme().players().local(),
2273 text: text_style,
2274 ..Default::default()
2275 },
2276 )
2277 }
2278
2279 fn render_rate_limit_notice(&self, cx: &mut Context<Self>) -> impl IntoElement {
2280 Popover::new().child(
2281 v_flex()
2282 .occlude()
2283 .p_2()
2284 .child(
2285 Label::new("Out of Tokens")
2286 .size(LabelSize::Small)
2287 .weight(FontWeight::BOLD),
2288 )
2289 .child(Label::new(
2290 "Try Zed Pro for higher limits, a wider range of models, and more.",
2291 ))
2292 .child(
2293 h_flex()
2294 .justify_between()
2295 .child(CheckboxWithLabel::new(
2296 "dont-show-again",
2297 Label::new("Don't show again"),
2298 if dismissed_rate_limit_notice() {
2299 ui::ToggleState::Selected
2300 } else {
2301 ui::ToggleState::Unselected
2302 },
2303 |selection, _, cx| {
2304 let is_dismissed = match selection {
2305 ui::ToggleState::Unselected => false,
2306 ui::ToggleState::Indeterminate => return,
2307 ui::ToggleState::Selected => true,
2308 };
2309
2310 set_rate_limit_notice_dismissed(is_dismissed, cx)
2311 },
2312 ))
2313 .child(
2314 h_flex()
2315 .gap_2()
2316 .child(
2317 Button::new("dismiss", "Dismiss")
2318 .style(ButtonStyle::Transparent)
2319 .on_click(cx.listener(Self::toggle_rate_limit_notice)),
2320 )
2321 .child(Button::new("more-info", "More Info").on_click(
2322 |_event, window, cx| {
2323 window.dispatch_action(
2324 Box::new(zed_actions::OpenAccountSettings),
2325 cx,
2326 )
2327 },
2328 )),
2329 ),
2330 ),
2331 )
2332 }
2333}
2334
2335const DISMISSED_RATE_LIMIT_NOTICE_KEY: &str = "dismissed-rate-limit-notice";
2336
2337fn dismissed_rate_limit_notice() -> bool {
2338 db::kvp::KEY_VALUE_STORE
2339 .read_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY)
2340 .log_err()
2341 .map_or(false, |s| s.is_some())
2342}
2343
2344fn set_rate_limit_notice_dismissed(is_dismissed: bool, cx: &mut App) {
2345 db::write_and_log(cx, move || async move {
2346 if is_dismissed {
2347 db::kvp::KEY_VALUE_STORE
2348 .write_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into(), "1".into())
2349 .await
2350 } else {
2351 db::kvp::KEY_VALUE_STORE
2352 .delete_kvp(DISMISSED_RATE_LIMIT_NOTICE_KEY.into())
2353 .await
2354 }
2355 })
2356}
2357
2358struct InlineAssist {
2359 group_id: InlineAssistGroupId,
2360 range: Range<Anchor>,
2361 editor: WeakEntity<Editor>,
2362 decorations: Option<InlineAssistDecorations>,
2363 codegen: Entity<Codegen>,
2364 _subscriptions: Vec<Subscription>,
2365 workspace: Option<WeakEntity<Workspace>>,
2366 include_context: bool,
2367}
2368
2369impl InlineAssist {
2370 fn new(
2371 assist_id: InlineAssistId,
2372 group_id: InlineAssistGroupId,
2373 include_context: bool,
2374 editor: &Entity<Editor>,
2375 prompt_editor: &Entity<PromptEditor>,
2376 prompt_block_id: CustomBlockId,
2377 end_block_id: CustomBlockId,
2378 range: Range<Anchor>,
2379 codegen: Entity<Codegen>,
2380 workspace: Option<WeakEntity<Workspace>>,
2381 window: &mut Window,
2382 cx: &mut App,
2383 ) -> Self {
2384 let prompt_editor_focus_handle = prompt_editor.focus_handle(cx);
2385 InlineAssist {
2386 group_id,
2387 include_context,
2388 editor: editor.downgrade(),
2389 decorations: Some(InlineAssistDecorations {
2390 prompt_block_id,
2391 prompt_editor: prompt_editor.clone(),
2392 removed_line_block_ids: HashSet::default(),
2393 end_block_id,
2394 }),
2395 range,
2396 codegen: codegen.clone(),
2397 workspace: workspace.clone(),
2398 _subscriptions: vec![
2399 window.on_focus_in(&prompt_editor_focus_handle, cx, move |_, cx| {
2400 InlineAssistant::update_global(cx, |this, cx| {
2401 this.handle_prompt_editor_focus_in(assist_id, cx)
2402 })
2403 }),
2404 window.on_focus_out(&prompt_editor_focus_handle, cx, move |_, _, cx| {
2405 InlineAssistant::update_global(cx, |this, cx| {
2406 this.handle_prompt_editor_focus_out(assist_id, cx)
2407 })
2408 }),
2409 window.subscribe(
2410 prompt_editor,
2411 cx,
2412 move |prompt_editor, event, window, cx| {
2413 InlineAssistant::update_global(cx, |this, cx| {
2414 this.handle_prompt_editor_event(prompt_editor, event, window, cx)
2415 })
2416 },
2417 ),
2418 window.observe(&codegen, cx, {
2419 let editor = editor.downgrade();
2420 move |_, window, cx| {
2421 if let Some(editor) = editor.upgrade() {
2422 InlineAssistant::update_global(cx, |this, cx| {
2423 if let Some(editor_assists) =
2424 this.assists_by_editor.get(&editor.downgrade())
2425 {
2426 editor_assists.highlight_updates.send(()).ok();
2427 }
2428
2429 this.update_editor_blocks(&editor, assist_id, window, cx);
2430 })
2431 }
2432 }
2433 }),
2434 window.subscribe(&codegen, cx, move |codegen, event, window, cx| {
2435 InlineAssistant::update_global(cx, |this, cx| match event {
2436 CodegenEvent::Undone => this.finish_assist(assist_id, false, window, cx),
2437 CodegenEvent::Finished => {
2438 let assist = if let Some(assist) = this.assists.get(&assist_id) {
2439 assist
2440 } else {
2441 return;
2442 };
2443
2444 if let CodegenStatus::Error(error) = codegen.read(cx).status(cx) {
2445 if assist.decorations.is_none() {
2446 if let Some(workspace) = assist
2447 .workspace
2448 .as_ref()
2449 .and_then(|workspace| workspace.upgrade())
2450 {
2451 let error = format!("Inline assistant error: {}", error);
2452 workspace.update(cx, |workspace, cx| {
2453 struct InlineAssistantError;
2454
2455 let id =
2456 NotificationId::composite::<InlineAssistantError>(
2457 assist_id.0,
2458 );
2459
2460 workspace.show_toast(Toast::new(id, error), cx);
2461 })
2462 }
2463 }
2464 }
2465
2466 if assist.decorations.is_none() {
2467 this.finish_assist(assist_id, false, window, cx);
2468 }
2469 }
2470 })
2471 }),
2472 ],
2473 }
2474 }
2475
2476 fn user_prompt(&self, cx: &App) -> Option<String> {
2477 let decorations = self.decorations.as_ref()?;
2478 Some(decorations.prompt_editor.read(cx).prompt(cx))
2479 }
2480
2481 fn assistant_panel_context(&self, cx: &mut App) -> Option<LanguageModelRequest> {
2482 if self.include_context {
2483 let workspace = self.workspace.as_ref()?;
2484 let workspace = workspace.upgrade()?.read(cx);
2485 let assistant_panel = workspace.panel::<AssistantPanel>(cx)?;
2486 Some(
2487 assistant_panel
2488 .read(cx)
2489 .active_context(cx)?
2490 .read(cx)
2491 .to_completion_request(RequestType::Chat, cx),
2492 )
2493 } else {
2494 None
2495 }
2496 }
2497
2498 pub fn count_tokens(&self, cx: &mut App) -> BoxFuture<'static, Result<TokenCounts>> {
2499 let Some(user_prompt) = self.user_prompt(cx) else {
2500 return future::ready(Err(anyhow!("no user prompt"))).boxed();
2501 };
2502 let assistant_panel_context = self.assistant_panel_context(cx);
2503 self.codegen
2504 .read(cx)
2505 .count_tokens(user_prompt, assistant_panel_context, cx)
2506 }
2507}
2508
2509struct InlineAssistDecorations {
2510 prompt_block_id: CustomBlockId,
2511 prompt_editor: Entity<PromptEditor>,
2512 removed_line_block_ids: HashSet<CustomBlockId>,
2513 end_block_id: CustomBlockId,
2514}
2515
2516#[derive(Copy, Clone, Debug)]
2517pub enum CodegenEvent {
2518 Finished,
2519 Undone,
2520}
2521
2522pub struct Codegen {
2523 alternatives: Vec<Entity<CodegenAlternative>>,
2524 active_alternative: usize,
2525 seen_alternatives: HashSet<usize>,
2526 subscriptions: Vec<Subscription>,
2527 buffer: Entity<MultiBuffer>,
2528 range: Range<Anchor>,
2529 initial_transaction_id: Option<TransactionId>,
2530 telemetry: Arc<Telemetry>,
2531 builder: Arc<PromptBuilder>,
2532 is_insertion: bool,
2533}
2534
2535impl Codegen {
2536 pub fn new(
2537 buffer: Entity<MultiBuffer>,
2538 range: Range<Anchor>,
2539 initial_transaction_id: Option<TransactionId>,
2540 telemetry: Arc<Telemetry>,
2541 builder: Arc<PromptBuilder>,
2542 cx: &mut Context<Self>,
2543 ) -> Self {
2544 let codegen = cx.new(|cx| {
2545 CodegenAlternative::new(
2546 buffer.clone(),
2547 range.clone(),
2548 false,
2549 Some(telemetry.clone()),
2550 builder.clone(),
2551 cx,
2552 )
2553 });
2554 let mut this = Self {
2555 is_insertion: range.to_offset(&buffer.read(cx).snapshot(cx)).is_empty(),
2556 alternatives: vec![codegen],
2557 active_alternative: 0,
2558 seen_alternatives: HashSet::default(),
2559 subscriptions: Vec::new(),
2560 buffer,
2561 range,
2562 initial_transaction_id,
2563 telemetry,
2564 builder,
2565 };
2566 this.activate(0, cx);
2567 this
2568 }
2569
2570 fn subscribe_to_alternative(&mut self, cx: &mut Context<Self>) {
2571 let codegen = self.active_alternative().clone();
2572 self.subscriptions.clear();
2573 self.subscriptions
2574 .push(cx.observe(&codegen, |_, _, cx| cx.notify()));
2575 self.subscriptions
2576 .push(cx.subscribe(&codegen, |_, _, event, cx| cx.emit(*event)));
2577 }
2578
2579 fn active_alternative(&self) -> &Entity<CodegenAlternative> {
2580 &self.alternatives[self.active_alternative]
2581 }
2582
2583 fn status<'a>(&self, cx: &'a App) -> &'a CodegenStatus {
2584 &self.active_alternative().read(cx).status
2585 }
2586
2587 fn alternative_count(&self, cx: &App) -> usize {
2588 LanguageModelRegistry::read_global(cx)
2589 .inline_alternative_models()
2590 .len()
2591 + 1
2592 }
2593
2594 pub fn cycle_prev(&mut self, cx: &mut Context<Self>) {
2595 let next_active_ix = if self.active_alternative == 0 {
2596 self.alternatives.len() - 1
2597 } else {
2598 self.active_alternative - 1
2599 };
2600 self.activate(next_active_ix, cx);
2601 }
2602
2603 pub fn cycle_next(&mut self, cx: &mut Context<Self>) {
2604 let next_active_ix = (self.active_alternative + 1) % self.alternatives.len();
2605 self.activate(next_active_ix, cx);
2606 }
2607
2608 fn activate(&mut self, index: usize, cx: &mut Context<Self>) {
2609 self.active_alternative()
2610 .update(cx, |codegen, cx| codegen.set_active(false, cx));
2611 self.seen_alternatives.insert(index);
2612 self.active_alternative = index;
2613 self.active_alternative()
2614 .update(cx, |codegen, cx| codegen.set_active(true, cx));
2615 self.subscribe_to_alternative(cx);
2616 cx.notify();
2617 }
2618
2619 pub fn start(
2620 &mut self,
2621 user_prompt: String,
2622 assistant_panel_context: Option<LanguageModelRequest>,
2623 cx: &mut Context<Self>,
2624 ) -> Result<()> {
2625 let alternative_models = LanguageModelRegistry::read_global(cx)
2626 .inline_alternative_models()
2627 .to_vec();
2628
2629 self.active_alternative()
2630 .update(cx, |alternative, cx| alternative.undo(cx));
2631 self.activate(0, cx);
2632 self.alternatives.truncate(1);
2633
2634 for _ in 0..alternative_models.len() {
2635 self.alternatives.push(cx.new(|cx| {
2636 CodegenAlternative::new(
2637 self.buffer.clone(),
2638 self.range.clone(),
2639 false,
2640 Some(self.telemetry.clone()),
2641 self.builder.clone(),
2642 cx,
2643 )
2644 }));
2645 }
2646
2647 let primary_model = LanguageModelRegistry::read_global(cx)
2648 .default_model()
2649 .context("no active model")?
2650 .model;
2651
2652 for (model, alternative) in iter::once(primary_model)
2653 .chain(alternative_models)
2654 .zip(&self.alternatives)
2655 {
2656 alternative.update(cx, |alternative, cx| {
2657 alternative.start(
2658 user_prompt.clone(),
2659 assistant_panel_context.clone(),
2660 model.clone(),
2661 cx,
2662 )
2663 })?;
2664 }
2665
2666 Ok(())
2667 }
2668
2669 pub fn stop(&mut self, cx: &mut Context<Self>) {
2670 for codegen in &self.alternatives {
2671 codegen.update(cx, |codegen, cx| codegen.stop(cx));
2672 }
2673 }
2674
2675 pub fn undo(&mut self, cx: &mut Context<Self>) {
2676 self.active_alternative()
2677 .update(cx, |codegen, cx| codegen.undo(cx));
2678
2679 self.buffer.update(cx, |buffer, cx| {
2680 if let Some(transaction_id) = self.initial_transaction_id.take() {
2681 buffer.undo_transaction(transaction_id, cx);
2682 buffer.refresh_preview(cx);
2683 }
2684 });
2685 }
2686
2687 pub fn count_tokens(
2688 &self,
2689 user_prompt: String,
2690 assistant_panel_context: Option<LanguageModelRequest>,
2691 cx: &App,
2692 ) -> BoxFuture<'static, Result<TokenCounts>> {
2693 self.active_alternative()
2694 .read(cx)
2695 .count_tokens(user_prompt, assistant_panel_context, cx)
2696 }
2697
2698 pub fn buffer(&self, cx: &App) -> Entity<MultiBuffer> {
2699 self.active_alternative().read(cx).buffer.clone()
2700 }
2701
2702 pub fn old_buffer(&self, cx: &App) -> Entity<Buffer> {
2703 self.active_alternative().read(cx).old_buffer.clone()
2704 }
2705
2706 pub fn snapshot(&self, cx: &App) -> MultiBufferSnapshot {
2707 self.active_alternative().read(cx).snapshot.clone()
2708 }
2709
2710 pub fn edit_position(&self, cx: &App) -> Option<Anchor> {
2711 self.active_alternative().read(cx).edit_position
2712 }
2713
2714 fn diff<'a>(&self, cx: &'a App) -> &'a Diff {
2715 &self.active_alternative().read(cx).diff
2716 }
2717
2718 pub fn last_equal_ranges<'a>(&self, cx: &'a App) -> &'a [Range<Anchor>] {
2719 self.active_alternative().read(cx).last_equal_ranges()
2720 }
2721}
2722
2723impl EventEmitter<CodegenEvent> for Codegen {}
2724
2725pub struct CodegenAlternative {
2726 buffer: Entity<MultiBuffer>,
2727 old_buffer: Entity<Buffer>,
2728 snapshot: MultiBufferSnapshot,
2729 edit_position: Option<Anchor>,
2730 range: Range<Anchor>,
2731 last_equal_ranges: Vec<Range<Anchor>>,
2732 transformation_transaction_id: Option<TransactionId>,
2733 status: CodegenStatus,
2734 generation: Task<()>,
2735 diff: Diff,
2736 telemetry: Option<Arc<Telemetry>>,
2737 _subscription: gpui::Subscription,
2738 builder: Arc<PromptBuilder>,
2739 active: bool,
2740 edits: Vec<(Range<Anchor>, String)>,
2741 line_operations: Vec<LineOperation>,
2742 request: Option<LanguageModelRequest>,
2743 elapsed_time: Option<f64>,
2744 completion: Option<String>,
2745 message_id: Option<String>,
2746}
2747
2748enum CodegenStatus {
2749 Idle,
2750 Pending,
2751 Done,
2752 Error(anyhow::Error),
2753}
2754
2755#[derive(Default)]
2756struct Diff {
2757 deleted_row_ranges: Vec<(Anchor, RangeInclusive<u32>)>,
2758 inserted_row_ranges: Vec<Range<Anchor>>,
2759}
2760
2761impl Diff {
2762 fn is_empty(&self) -> bool {
2763 self.deleted_row_ranges.is_empty() && self.inserted_row_ranges.is_empty()
2764 }
2765}
2766
2767impl EventEmitter<CodegenEvent> for CodegenAlternative {}
2768
2769impl CodegenAlternative {
2770 pub fn new(
2771 multi_buffer: Entity<MultiBuffer>,
2772 range: Range<Anchor>,
2773 active: bool,
2774 telemetry: Option<Arc<Telemetry>>,
2775 builder: Arc<PromptBuilder>,
2776 cx: &mut Context<Self>,
2777 ) -> Self {
2778 let snapshot = multi_buffer.read(cx).snapshot(cx);
2779
2780 let (buffer, _, _) = snapshot
2781 .range_to_buffer_ranges(range.clone())
2782 .pop()
2783 .unwrap();
2784 let old_buffer = cx.new(|cx| {
2785 let text = buffer.as_rope().clone();
2786 let line_ending = buffer.line_ending();
2787 let language = buffer.language().cloned();
2788 let language_registry = multi_buffer
2789 .read(cx)
2790 .buffer(buffer.remote_id())
2791 .unwrap()
2792 .read(cx)
2793 .language_registry();
2794
2795 let mut buffer = Buffer::local_normalized(text, line_ending, cx);
2796 buffer.set_language(language, cx);
2797 if let Some(language_registry) = language_registry {
2798 buffer.set_language_registry(language_registry)
2799 }
2800 buffer
2801 });
2802
2803 Self {
2804 buffer: multi_buffer.clone(),
2805 old_buffer,
2806 edit_position: None,
2807 message_id: None,
2808 snapshot,
2809 last_equal_ranges: Default::default(),
2810 transformation_transaction_id: None,
2811 status: CodegenStatus::Idle,
2812 generation: Task::ready(()),
2813 diff: Diff::default(),
2814 telemetry,
2815 _subscription: cx.subscribe(&multi_buffer, Self::handle_buffer_event),
2816 builder,
2817 active,
2818 edits: Vec::new(),
2819 line_operations: Vec::new(),
2820 range,
2821 request: None,
2822 elapsed_time: None,
2823 completion: None,
2824 }
2825 }
2826
2827 fn set_active(&mut self, active: bool, cx: &mut Context<Self>) {
2828 if active != self.active {
2829 self.active = active;
2830
2831 if self.active {
2832 let edits = self.edits.clone();
2833 self.apply_edits(edits, cx);
2834 if matches!(self.status, CodegenStatus::Pending) {
2835 let line_operations = self.line_operations.clone();
2836 self.reapply_line_based_diff(line_operations, cx);
2837 } else {
2838 self.reapply_batch_diff(cx).detach();
2839 }
2840 } else if let Some(transaction_id) = self.transformation_transaction_id.take() {
2841 self.buffer.update(cx, |buffer, cx| {
2842 buffer.undo_transaction(transaction_id, cx);
2843 buffer.forget_transaction(transaction_id, cx);
2844 });
2845 }
2846 }
2847 }
2848
2849 fn handle_buffer_event(
2850 &mut self,
2851 _buffer: Entity<MultiBuffer>,
2852 event: &multi_buffer::Event,
2853 cx: &mut Context<Self>,
2854 ) {
2855 if let multi_buffer::Event::TransactionUndone { transaction_id } = event {
2856 if self.transformation_transaction_id == Some(*transaction_id) {
2857 self.transformation_transaction_id = None;
2858 self.generation = Task::ready(());
2859 cx.emit(CodegenEvent::Undone);
2860 }
2861 }
2862 }
2863
2864 pub fn last_equal_ranges(&self) -> &[Range<Anchor>] {
2865 &self.last_equal_ranges
2866 }
2867
2868 pub fn count_tokens(
2869 &self,
2870 user_prompt: String,
2871 assistant_panel_context: Option<LanguageModelRequest>,
2872 cx: &App,
2873 ) -> BoxFuture<'static, Result<TokenCounts>> {
2874 if let Some(ConfiguredModel { model, .. }) =
2875 LanguageModelRegistry::read_global(cx).inline_assistant_model()
2876 {
2877 let request = self.build_request(user_prompt, assistant_panel_context.clone(), cx);
2878 match request {
2879 Ok(request) => {
2880 let total_count = model.count_tokens(request.clone(), cx);
2881 let assistant_panel_count = assistant_panel_context
2882 .map(|context| model.count_tokens(context, cx))
2883 .unwrap_or_else(|| future::ready(Ok(0)).boxed());
2884
2885 async move {
2886 Ok(TokenCounts {
2887 total: total_count.await?,
2888 assistant_panel: assistant_panel_count.await?,
2889 })
2890 }
2891 .boxed()
2892 }
2893 Err(error) => futures::future::ready(Err(error)).boxed(),
2894 }
2895 } else {
2896 future::ready(Err(anyhow!("no active model"))).boxed()
2897 }
2898 }
2899
2900 pub fn start(
2901 &mut self,
2902 user_prompt: String,
2903 assistant_panel_context: Option<LanguageModelRequest>,
2904 model: Arc<dyn LanguageModel>,
2905 cx: &mut Context<Self>,
2906 ) -> Result<()> {
2907 if let Some(transformation_transaction_id) = self.transformation_transaction_id.take() {
2908 self.buffer.update(cx, |buffer, cx| {
2909 buffer.undo_transaction(transformation_transaction_id, cx);
2910 });
2911 }
2912
2913 self.edit_position = Some(self.range.start.bias_right(&self.snapshot));
2914
2915 let api_key = model.api_key(cx);
2916 let telemetry_id = model.telemetry_id();
2917 let provider_id = model.provider_id();
2918 let stream: LocalBoxFuture<Result<LanguageModelTextStream>> =
2919 if user_prompt.trim().to_lowercase() == "delete" {
2920 async { Ok(LanguageModelTextStream::default()) }.boxed_local()
2921 } else {
2922 let request = self.build_request(user_prompt, assistant_panel_context, cx)?;
2923 self.request = Some(request.clone());
2924
2925 cx.spawn(async move |_, cx| model.stream_completion_text(request, &cx).await)
2926 .boxed_local()
2927 };
2928 self.handle_stream(telemetry_id, provider_id.to_string(), api_key, stream, cx);
2929 Ok(())
2930 }
2931
2932 fn build_request(
2933 &self,
2934 user_prompt: String,
2935 assistant_panel_context: Option<LanguageModelRequest>,
2936 cx: &App,
2937 ) -> Result<LanguageModelRequest> {
2938 let buffer = self.buffer.read(cx).snapshot(cx);
2939 let language = buffer.language_at(self.range.start);
2940 let language_name = if let Some(language) = language.as_ref() {
2941 if Arc::ptr_eq(language, &language::PLAIN_TEXT) {
2942 None
2943 } else {
2944 Some(language.name())
2945 }
2946 } else {
2947 None
2948 };
2949
2950 let language_name = language_name.as_ref();
2951 let start = buffer.point_to_buffer_offset(self.range.start);
2952 let end = buffer.point_to_buffer_offset(self.range.end);
2953 let (buffer, range) = if let Some((start, end)) = start.zip(end) {
2954 let (start_buffer, start_buffer_offset) = start;
2955 let (end_buffer, end_buffer_offset) = end;
2956 if start_buffer.remote_id() == end_buffer.remote_id() {
2957 (start_buffer.clone(), start_buffer_offset..end_buffer_offset)
2958 } else {
2959 return Err(anyhow::anyhow!("invalid transformation range"));
2960 }
2961 } else {
2962 return Err(anyhow::anyhow!("invalid transformation range"));
2963 };
2964
2965 let prompt = self
2966 .builder
2967 .generate_inline_transformation_prompt(user_prompt, language_name, buffer, range)
2968 .map_err(|e| anyhow::anyhow!("Failed to generate content prompt: {}", e))?;
2969
2970 let mut messages = Vec::new();
2971 if let Some(context_request) = assistant_panel_context {
2972 messages = context_request.messages;
2973 }
2974
2975 messages.push(LanguageModelRequestMessage {
2976 role: Role::User,
2977 content: vec![prompt.into()],
2978 cache: false,
2979 });
2980
2981 Ok(LanguageModelRequest {
2982 thread_id: None,
2983 prompt_id: None,
2984 mode: None,
2985 messages,
2986 tools: Vec::new(),
2987 stop: Vec::new(),
2988 temperature: None,
2989 })
2990 }
2991
2992 pub fn handle_stream(
2993 &mut self,
2994 model_telemetry_id: String,
2995 model_provider_id: String,
2996 model_api_key: Option<String>,
2997 stream: impl 'static + Future<Output = Result<LanguageModelTextStream>>,
2998 cx: &mut Context<Self>,
2999 ) {
3000 let start_time = Instant::now();
3001 let snapshot = self.snapshot.clone();
3002 let selected_text = snapshot
3003 .text_for_range(self.range.start..self.range.end)
3004 .collect::<Rope>();
3005
3006 let selection_start = self.range.start.to_point(&snapshot);
3007
3008 // Start with the indentation of the first line in the selection
3009 let mut suggested_line_indent = snapshot
3010 .suggested_indents(selection_start.row..=selection_start.row, cx)
3011 .into_values()
3012 .next()
3013 .unwrap_or_else(|| snapshot.indent_size_for_line(MultiBufferRow(selection_start.row)));
3014
3015 // If the first line in the selection does not have indentation, check the following lines
3016 if suggested_line_indent.len == 0 && suggested_line_indent.kind == IndentKind::Space {
3017 for row in selection_start.row..=self.range.end.to_point(&snapshot).row {
3018 let line_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
3019 // Prefer tabs if a line in the selection uses tabs as indentation
3020 if line_indent.kind == IndentKind::Tab {
3021 suggested_line_indent.kind = IndentKind::Tab;
3022 break;
3023 }
3024 }
3025 }
3026
3027 let http_client = cx.http_client();
3028 let telemetry = self.telemetry.clone();
3029 let language_name = {
3030 let multibuffer = self.buffer.read(cx);
3031 let snapshot = multibuffer.snapshot(cx);
3032 let ranges = snapshot.range_to_buffer_ranges(self.range.clone());
3033 ranges
3034 .first()
3035 .and_then(|(buffer, _, _)| buffer.language())
3036 .map(|language| language.name())
3037 };
3038
3039 self.diff = Diff::default();
3040 self.status = CodegenStatus::Pending;
3041 let mut edit_start = self.range.start.to_offset(&snapshot);
3042 let completion = Arc::new(Mutex::new(String::new()));
3043 let completion_clone = completion.clone();
3044
3045 self.generation = cx.spawn(async move |codegen, cx| {
3046 let stream = stream.await;
3047 let message_id = stream
3048 .as_ref()
3049 .ok()
3050 .and_then(|stream| stream.message_id.clone());
3051 let generate = async {
3052 let (mut diff_tx, mut diff_rx) = mpsc::channel(1);
3053 let executor = cx.background_executor().clone();
3054 let message_id = message_id.clone();
3055 let line_based_stream_diff: Task<anyhow::Result<()>> =
3056 cx.background_spawn(async move {
3057 let mut response_latency = None;
3058 let request_start = Instant::now();
3059 let diff = async {
3060 let chunks =
3061 StripInvalidSpans::new(stream?.stream.map_err(|e| e.into()));
3062 futures::pin_mut!(chunks);
3063 let mut diff = StreamingDiff::new(selected_text.to_string());
3064 let mut line_diff = LineDiff::default();
3065
3066 let mut new_text = String::new();
3067 let mut base_indent = None;
3068 let mut line_indent = None;
3069 let mut first_line = true;
3070
3071 while let Some(chunk) = chunks.next().await {
3072 if response_latency.is_none() {
3073 response_latency = Some(request_start.elapsed());
3074 }
3075 let chunk = chunk?;
3076 completion_clone.lock().push_str(&chunk);
3077
3078 let mut lines = chunk.split('\n').peekable();
3079 while let Some(line) = lines.next() {
3080 new_text.push_str(line);
3081 if line_indent.is_none() {
3082 if let Some(non_whitespace_ch_ix) =
3083 new_text.find(|ch: char| !ch.is_whitespace())
3084 {
3085 line_indent = Some(non_whitespace_ch_ix);
3086 base_indent = base_indent.or(line_indent);
3087
3088 let line_indent = line_indent.unwrap();
3089 let base_indent = base_indent.unwrap();
3090 let indent_delta =
3091 line_indent as i32 - base_indent as i32;
3092 let mut corrected_indent_len = cmp::max(
3093 0,
3094 suggested_line_indent.len as i32 + indent_delta,
3095 )
3096 as usize;
3097 if first_line {
3098 corrected_indent_len = corrected_indent_len
3099 .saturating_sub(
3100 selection_start.column as usize,
3101 );
3102 }
3103
3104 let indent_char = suggested_line_indent.char();
3105 let mut indent_buffer = [0; 4];
3106 let indent_str =
3107 indent_char.encode_utf8(&mut indent_buffer);
3108 new_text.replace_range(
3109 ..line_indent,
3110 &indent_str.repeat(corrected_indent_len),
3111 );
3112 }
3113 }
3114
3115 if line_indent.is_some() {
3116 let char_ops = diff.push_new(&new_text);
3117 line_diff.push_char_operations(&char_ops, &selected_text);
3118 diff_tx
3119 .send((char_ops, line_diff.line_operations()))
3120 .await?;
3121 new_text.clear();
3122 }
3123
3124 if lines.peek().is_some() {
3125 let char_ops = diff.push_new("\n");
3126 line_diff.push_char_operations(&char_ops, &selected_text);
3127 diff_tx
3128 .send((char_ops, line_diff.line_operations()))
3129 .await?;
3130 if line_indent.is_none() {
3131 // Don't write out the leading indentation in empty lines on the next line
3132 // This is the case where the above if statement didn't clear the buffer
3133 new_text.clear();
3134 }
3135 line_indent = None;
3136 first_line = false;
3137 }
3138 }
3139 }
3140
3141 let mut char_ops = diff.push_new(&new_text);
3142 char_ops.extend(diff.finish());
3143 line_diff.push_char_operations(&char_ops, &selected_text);
3144 line_diff.finish(&selected_text);
3145 diff_tx
3146 .send((char_ops, line_diff.line_operations()))
3147 .await?;
3148
3149 anyhow::Ok(())
3150 };
3151
3152 let result = diff.await;
3153
3154 let error_message = result.as_ref().err().map(|error| error.to_string());
3155 report_assistant_event(
3156 AssistantEventData {
3157 conversation_id: None,
3158 message_id,
3159 kind: AssistantKind::Inline,
3160 phase: AssistantPhase::Response,
3161 model: model_telemetry_id,
3162 model_provider: model_provider_id.to_string(),
3163 response_latency,
3164 error_message,
3165 language_name: language_name.map(|name| name.to_proto()),
3166 },
3167 telemetry,
3168 http_client,
3169 model_api_key,
3170 &executor,
3171 );
3172
3173 result?;
3174 Ok(())
3175 });
3176
3177 while let Some((char_ops, line_ops)) = diff_rx.next().await {
3178 codegen.update(cx, |codegen, cx| {
3179 codegen.last_equal_ranges.clear();
3180
3181 let edits = char_ops
3182 .into_iter()
3183 .filter_map(|operation| match operation {
3184 CharOperation::Insert { text } => {
3185 let edit_start = snapshot.anchor_after(edit_start);
3186 Some((edit_start..edit_start, text))
3187 }
3188 CharOperation::Delete { bytes } => {
3189 let edit_end = edit_start + bytes;
3190 let edit_range = snapshot.anchor_after(edit_start)
3191 ..snapshot.anchor_before(edit_end);
3192 edit_start = edit_end;
3193 Some((edit_range, String::new()))
3194 }
3195 CharOperation::Keep { bytes } => {
3196 let edit_end = edit_start + bytes;
3197 let edit_range = snapshot.anchor_after(edit_start)
3198 ..snapshot.anchor_before(edit_end);
3199 edit_start = edit_end;
3200 codegen.last_equal_ranges.push(edit_range);
3201 None
3202 }
3203 })
3204 .collect::<Vec<_>>();
3205
3206 if codegen.active {
3207 codegen.apply_edits(edits.iter().cloned(), cx);
3208 codegen.reapply_line_based_diff(line_ops.iter().cloned(), cx);
3209 }
3210 codegen.edits.extend(edits);
3211 codegen.line_operations = line_ops;
3212 codegen.edit_position = Some(snapshot.anchor_after(edit_start));
3213
3214 cx.notify();
3215 })?;
3216 }
3217
3218 // Streaming stopped and we have the new text in the buffer, and a line-based diff applied for the whole new buffer.
3219 // That diff is not what a regular diff is and might look unexpected, ergo apply a regular diff.
3220 // It's fine to apply even if the rest of the line diffing fails, as no more hunks are coming through `diff_rx`.
3221 let batch_diff_task =
3222 codegen.update(cx, |codegen, cx| codegen.reapply_batch_diff(cx))?;
3223 let (line_based_stream_diff, ()) = join!(line_based_stream_diff, batch_diff_task);
3224 line_based_stream_diff?;
3225
3226 anyhow::Ok(())
3227 };
3228
3229 let result = generate.await;
3230 let elapsed_time = start_time.elapsed().as_secs_f64();
3231
3232 codegen
3233 .update(cx, |this, cx| {
3234 this.message_id = message_id;
3235 this.last_equal_ranges.clear();
3236 if let Err(error) = result {
3237 this.status = CodegenStatus::Error(error);
3238 } else {
3239 this.status = CodegenStatus::Done;
3240 }
3241 this.elapsed_time = Some(elapsed_time);
3242 this.completion = Some(completion.lock().clone());
3243 cx.emit(CodegenEvent::Finished);
3244 cx.notify();
3245 })
3246 .ok();
3247 });
3248 cx.notify();
3249 }
3250
3251 pub fn stop(&mut self, cx: &mut Context<Self>) {
3252 self.last_equal_ranges.clear();
3253 if self.diff.is_empty() {
3254 self.status = CodegenStatus::Idle;
3255 } else {
3256 self.status = CodegenStatus::Done;
3257 }
3258 self.generation = Task::ready(());
3259 cx.emit(CodegenEvent::Finished);
3260 cx.notify();
3261 }
3262
3263 pub fn undo(&mut self, cx: &mut Context<Self>) {
3264 self.buffer.update(cx, |buffer, cx| {
3265 if let Some(transaction_id) = self.transformation_transaction_id.take() {
3266 buffer.undo_transaction(transaction_id, cx);
3267 buffer.refresh_preview(cx);
3268 }
3269 });
3270 }
3271
3272 fn apply_edits(
3273 &mut self,
3274 edits: impl IntoIterator<Item = (Range<Anchor>, String)>,
3275 cx: &mut Context<CodegenAlternative>,
3276 ) {
3277 let transaction = self.buffer.update(cx, |buffer, cx| {
3278 // Avoid grouping assistant edits with user edits.
3279 buffer.finalize_last_transaction(cx);
3280 buffer.start_transaction(cx);
3281 buffer.edit(edits, None, cx);
3282 buffer.end_transaction(cx)
3283 });
3284
3285 if let Some(transaction) = transaction {
3286 if let Some(first_transaction) = self.transformation_transaction_id {
3287 // Group all assistant edits into the first transaction.
3288 self.buffer.update(cx, |buffer, cx| {
3289 buffer.merge_transactions(transaction, first_transaction, cx)
3290 });
3291 } else {
3292 self.transformation_transaction_id = Some(transaction);
3293 self.buffer
3294 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3295 }
3296 }
3297 }
3298
3299 fn reapply_line_based_diff(
3300 &mut self,
3301 line_operations: impl IntoIterator<Item = LineOperation>,
3302 cx: &mut Context<Self>,
3303 ) {
3304 let old_snapshot = self.snapshot.clone();
3305 let old_range = self.range.to_point(&old_snapshot);
3306 let new_snapshot = self.buffer.read(cx).snapshot(cx);
3307 let new_range = self.range.to_point(&new_snapshot);
3308
3309 let mut old_row = old_range.start.row;
3310 let mut new_row = new_range.start.row;
3311
3312 self.diff.deleted_row_ranges.clear();
3313 self.diff.inserted_row_ranges.clear();
3314 for operation in line_operations {
3315 match operation {
3316 LineOperation::Keep { lines } => {
3317 old_row += lines;
3318 new_row += lines;
3319 }
3320 LineOperation::Delete { lines } => {
3321 let old_end_row = old_row + lines - 1;
3322 let new_row = new_snapshot.anchor_before(Point::new(new_row, 0));
3323
3324 if let Some((_, last_deleted_row_range)) =
3325 self.diff.deleted_row_ranges.last_mut()
3326 {
3327 if *last_deleted_row_range.end() + 1 == old_row {
3328 *last_deleted_row_range = *last_deleted_row_range.start()..=old_end_row;
3329 } else {
3330 self.diff
3331 .deleted_row_ranges
3332 .push((new_row, old_row..=old_end_row));
3333 }
3334 } else {
3335 self.diff
3336 .deleted_row_ranges
3337 .push((new_row, old_row..=old_end_row));
3338 }
3339
3340 old_row += lines;
3341 }
3342 LineOperation::Insert { lines } => {
3343 let new_end_row = new_row + lines - 1;
3344 let start = new_snapshot.anchor_before(Point::new(new_row, 0));
3345 let end = new_snapshot.anchor_before(Point::new(
3346 new_end_row,
3347 new_snapshot.line_len(MultiBufferRow(new_end_row)),
3348 ));
3349 self.diff.inserted_row_ranges.push(start..end);
3350 new_row += lines;
3351 }
3352 }
3353
3354 cx.notify();
3355 }
3356 }
3357
3358 fn reapply_batch_diff(&mut self, cx: &mut Context<Self>) -> Task<()> {
3359 let old_snapshot = self.snapshot.clone();
3360 let old_range = self.range.to_point(&old_snapshot);
3361 let new_snapshot = self.buffer.read(cx).snapshot(cx);
3362 let new_range = self.range.to_point(&new_snapshot);
3363
3364 cx.spawn(async move |codegen, cx| {
3365 let (deleted_row_ranges, inserted_row_ranges) = cx
3366 .background_spawn(async move {
3367 let old_text = old_snapshot
3368 .text_for_range(
3369 Point::new(old_range.start.row, 0)
3370 ..Point::new(
3371 old_range.end.row,
3372 old_snapshot.line_len(MultiBufferRow(old_range.end.row)),
3373 ),
3374 )
3375 .collect::<String>();
3376 let new_text = new_snapshot
3377 .text_for_range(
3378 Point::new(new_range.start.row, 0)
3379 ..Point::new(
3380 new_range.end.row,
3381 new_snapshot.line_len(MultiBufferRow(new_range.end.row)),
3382 ),
3383 )
3384 .collect::<String>();
3385
3386 let old_start_row = old_range.start.row;
3387 let new_start_row = new_range.start.row;
3388 let mut deleted_row_ranges: Vec<(Anchor, RangeInclusive<u32>)> = Vec::new();
3389 let mut inserted_row_ranges = Vec::new();
3390 for (old_rows, new_rows) in line_diff(&old_text, &new_text) {
3391 let old_rows = old_start_row + old_rows.start..old_start_row + old_rows.end;
3392 let new_rows = new_start_row + new_rows.start..new_start_row + new_rows.end;
3393 if !old_rows.is_empty() {
3394 deleted_row_ranges.push((
3395 new_snapshot.anchor_before(Point::new(new_rows.start, 0)),
3396 old_rows.start..=old_rows.end - 1,
3397 ));
3398 }
3399 if !new_rows.is_empty() {
3400 let start = new_snapshot.anchor_before(Point::new(new_rows.start, 0));
3401 let new_end_row = new_rows.end - 1;
3402 let end = new_snapshot.anchor_before(Point::new(
3403 new_end_row,
3404 new_snapshot.line_len(MultiBufferRow(new_end_row)),
3405 ));
3406 inserted_row_ranges.push(start..end);
3407 }
3408 }
3409 (deleted_row_ranges, inserted_row_ranges)
3410 })
3411 .await;
3412
3413 codegen
3414 .update(cx, |codegen, cx| {
3415 codegen.diff.deleted_row_ranges = deleted_row_ranges;
3416 codegen.diff.inserted_row_ranges = inserted_row_ranges;
3417 cx.notify();
3418 })
3419 .ok();
3420 })
3421 }
3422}
3423
3424struct StripInvalidSpans<T> {
3425 stream: T,
3426 stream_done: bool,
3427 buffer: String,
3428 first_line: bool,
3429 line_end: bool,
3430 starts_with_code_block: bool,
3431}
3432
3433impl<T> StripInvalidSpans<T>
3434where
3435 T: Stream<Item = Result<String>>,
3436{
3437 fn new(stream: T) -> Self {
3438 Self {
3439 stream,
3440 stream_done: false,
3441 buffer: String::new(),
3442 first_line: true,
3443 line_end: false,
3444 starts_with_code_block: false,
3445 }
3446 }
3447}
3448
3449impl<T> Stream for StripInvalidSpans<T>
3450where
3451 T: Stream<Item = Result<String>>,
3452{
3453 type Item = Result<String>;
3454
3455 fn poll_next(self: Pin<&mut Self>, cx: &mut task::Context) -> Poll<Option<Self::Item>> {
3456 const CODE_BLOCK_DELIMITER: &str = "```";
3457 const CURSOR_SPAN: &str = "<|CURSOR|>";
3458
3459 let this = unsafe { self.get_unchecked_mut() };
3460 loop {
3461 if !this.stream_done {
3462 let mut stream = unsafe { Pin::new_unchecked(&mut this.stream) };
3463 match stream.as_mut().poll_next(cx) {
3464 Poll::Ready(Some(Ok(chunk))) => {
3465 this.buffer.push_str(&chunk);
3466 }
3467 Poll::Ready(Some(Err(error))) => return Poll::Ready(Some(Err(error))),
3468 Poll::Ready(None) => {
3469 this.stream_done = true;
3470 }
3471 Poll::Pending => return Poll::Pending,
3472 }
3473 }
3474
3475 let mut chunk = String::new();
3476 let mut consumed = 0;
3477 if !this.buffer.is_empty() {
3478 let mut lines = this.buffer.split('\n').enumerate().peekable();
3479 while let Some((line_ix, line)) = lines.next() {
3480 if line_ix > 0 {
3481 this.first_line = false;
3482 }
3483
3484 if this.first_line {
3485 let trimmed_line = line.trim();
3486 if lines.peek().is_some() {
3487 if trimmed_line.starts_with(CODE_BLOCK_DELIMITER) {
3488 consumed += line.len() + 1;
3489 this.starts_with_code_block = true;
3490 continue;
3491 }
3492 } else if trimmed_line.is_empty()
3493 || prefixes(CODE_BLOCK_DELIMITER)
3494 .any(|prefix| trimmed_line.starts_with(prefix))
3495 {
3496 break;
3497 }
3498 }
3499
3500 let line_without_cursor = line.replace(CURSOR_SPAN, "");
3501 if lines.peek().is_some() {
3502 if this.line_end {
3503 chunk.push('\n');
3504 }
3505
3506 chunk.push_str(&line_without_cursor);
3507 this.line_end = true;
3508 consumed += line.len() + 1;
3509 } else if this.stream_done {
3510 if !this.starts_with_code_block
3511 || !line_without_cursor.trim().ends_with(CODE_BLOCK_DELIMITER)
3512 {
3513 if this.line_end {
3514 chunk.push('\n');
3515 }
3516
3517 chunk.push_str(&line);
3518 }
3519
3520 consumed += line.len();
3521 } else {
3522 let trimmed_line = line.trim();
3523 if trimmed_line.is_empty()
3524 || prefixes(CURSOR_SPAN).any(|prefix| trimmed_line.ends_with(prefix))
3525 || prefixes(CODE_BLOCK_DELIMITER)
3526 .any(|prefix| trimmed_line.ends_with(prefix))
3527 {
3528 break;
3529 } else {
3530 if this.line_end {
3531 chunk.push('\n');
3532 this.line_end = false;
3533 }
3534
3535 chunk.push_str(&line_without_cursor);
3536 consumed += line.len();
3537 }
3538 }
3539 }
3540 }
3541
3542 this.buffer = this.buffer.split_off(consumed);
3543 if !chunk.is_empty() {
3544 return Poll::Ready(Some(Ok(chunk)));
3545 } else if this.stream_done {
3546 return Poll::Ready(None);
3547 }
3548 }
3549 }
3550}
3551
3552struct AssistantCodeActionProvider {
3553 editor: WeakEntity<Editor>,
3554 workspace: WeakEntity<Workspace>,
3555}
3556
3557const ASSISTANT_CODE_ACTION_PROVIDER_ID: &str = "assistant";
3558
3559impl CodeActionProvider for AssistantCodeActionProvider {
3560 fn id(&self) -> Arc<str> {
3561 ASSISTANT_CODE_ACTION_PROVIDER_ID.into()
3562 }
3563
3564 fn code_actions(
3565 &self,
3566 buffer: &Entity<Buffer>,
3567 range: Range<text::Anchor>,
3568 _: &mut Window,
3569 cx: &mut App,
3570 ) -> Task<Result<Vec<CodeAction>>> {
3571 if !Assistant::enabled(cx) {
3572 return Task::ready(Ok(Vec::new()));
3573 }
3574
3575 let snapshot = buffer.read(cx).snapshot();
3576 let mut range = range.to_point(&snapshot);
3577
3578 // Expand the range to line boundaries.
3579 range.start.column = 0;
3580 range.end.column = snapshot.line_len(range.end.row);
3581
3582 let mut has_diagnostics = false;
3583 for diagnostic in snapshot.diagnostics_in_range::<_, Point>(range.clone(), false) {
3584 range.start = cmp::min(range.start, diagnostic.range.start);
3585 range.end = cmp::max(range.end, diagnostic.range.end);
3586 has_diagnostics = true;
3587 }
3588 if has_diagnostics {
3589 if let Some(symbols_containing_start) = snapshot.symbols_containing(range.start, None) {
3590 if let Some(symbol) = symbols_containing_start.last() {
3591 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3592 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3593 }
3594 }
3595
3596 if let Some(symbols_containing_end) = snapshot.symbols_containing(range.end, None) {
3597 if let Some(symbol) = symbols_containing_end.last() {
3598 range.start = cmp::min(range.start, symbol.range.start.to_point(&snapshot));
3599 range.end = cmp::max(range.end, symbol.range.end.to_point(&snapshot));
3600 }
3601 }
3602
3603 Task::ready(Ok(vec![CodeAction {
3604 server_id: language::LanguageServerId(0),
3605 range: snapshot.anchor_before(range.start)..snapshot.anchor_after(range.end),
3606 lsp_action: LspAction::Action(Box::new(lsp::CodeAction {
3607 title: "Fix with Assistant".into(),
3608 ..Default::default()
3609 })),
3610 resolved: true,
3611 }]))
3612 } else {
3613 Task::ready(Ok(Vec::new()))
3614 }
3615 }
3616
3617 fn apply_code_action(
3618 &self,
3619 buffer: Entity<Buffer>,
3620 action: CodeAction,
3621 excerpt_id: ExcerptId,
3622 _push_to_history: bool,
3623 window: &mut Window,
3624 cx: &mut App,
3625 ) -> Task<Result<ProjectTransaction>> {
3626 let editor = self.editor.clone();
3627 let workspace = self.workspace.clone();
3628 window.spawn(cx, async move |cx| {
3629 let editor = editor.upgrade().context("editor was released")?;
3630 let range = editor
3631 .update(cx, |editor, cx| {
3632 editor.buffer().update(cx, |multibuffer, cx| {
3633 let buffer = buffer.read(cx);
3634 let multibuffer_snapshot = multibuffer.read(cx);
3635
3636 let old_context_range =
3637 multibuffer_snapshot.context_range_for_excerpt(excerpt_id)?;
3638 let mut new_context_range = old_context_range.clone();
3639 if action
3640 .range
3641 .start
3642 .cmp(&old_context_range.start, buffer)
3643 .is_lt()
3644 {
3645 new_context_range.start = action.range.start;
3646 }
3647 if action.range.end.cmp(&old_context_range.end, buffer).is_gt() {
3648 new_context_range.end = action.range.end;
3649 }
3650 drop(multibuffer_snapshot);
3651
3652 if new_context_range != old_context_range {
3653 multibuffer.resize_excerpt(excerpt_id, new_context_range, cx);
3654 }
3655
3656 let multibuffer_snapshot = multibuffer.read(cx);
3657 Some(
3658 multibuffer_snapshot
3659 .anchor_in_excerpt(excerpt_id, action.range.start)?
3660 ..multibuffer_snapshot
3661 .anchor_in_excerpt(excerpt_id, action.range.end)?,
3662 )
3663 })
3664 })?
3665 .context("invalid range")?;
3666 let assistant_panel = workspace.update(cx, |workspace, cx| {
3667 workspace
3668 .panel::<AssistantPanel>(cx)
3669 .context("assistant panel was released")
3670 })??;
3671
3672 cx.update_global(|assistant: &mut InlineAssistant, window, cx| {
3673 let assist_id = assistant.suggest_assist(
3674 &editor,
3675 range,
3676 "Fix Diagnostics".into(),
3677 None,
3678 true,
3679 Some(workspace),
3680 Some(&assistant_panel),
3681 window,
3682 cx,
3683 );
3684 assistant.start_assist(assist_id, window, cx);
3685 })?;
3686
3687 Ok(ProjectTransaction::default())
3688 })
3689 }
3690}
3691
3692fn prefixes(text: &str) -> impl Iterator<Item = &str> {
3693 (0..text.len() - 1).map(|ix| &text[..ix + 1])
3694}
3695
3696fn merge_ranges(ranges: &mut Vec<Range<Anchor>>, buffer: &MultiBufferSnapshot) {
3697 ranges.sort_unstable_by(|a, b| {
3698 a.start
3699 .cmp(&b.start, buffer)
3700 .then_with(|| b.end.cmp(&a.end, buffer))
3701 });
3702
3703 let mut ix = 0;
3704 while ix + 1 < ranges.len() {
3705 let b = ranges[ix + 1].clone();
3706 let a = &mut ranges[ix];
3707 if a.end.cmp(&b.start, buffer).is_gt() {
3708 if a.end.cmp(&b.end, buffer).is_lt() {
3709 a.end = b.end;
3710 }
3711 ranges.remove(ix + 1);
3712 } else {
3713 ix += 1;
3714 }
3715 }
3716}
3717
3718#[cfg(test)]
3719mod tests {
3720 use super::*;
3721 use futures::stream::{self};
3722 use gpui::TestAppContext;
3723 use indoc::indoc;
3724 use language::{
3725 Buffer, Language, LanguageConfig, LanguageMatcher, Point, language_settings,
3726 tree_sitter_rust,
3727 };
3728 use language_model::{LanguageModelRegistry, TokenUsage};
3729 use rand::prelude::*;
3730 use serde::Serialize;
3731 use settings::SettingsStore;
3732 use std::{future, sync::Arc};
3733
3734 #[derive(Serialize)]
3735 pub struct DummyCompletionRequest {
3736 pub name: String,
3737 }
3738
3739 #[gpui::test(iterations = 10)]
3740 async fn test_transform_autoindent(cx: &mut TestAppContext, mut rng: StdRng) {
3741 cx.set_global(cx.update(SettingsStore::test));
3742 cx.update(language_model::LanguageModelRegistry::test);
3743 cx.update(language_settings::init);
3744
3745 let text = indoc! {"
3746 fn main() {
3747 let x = 0;
3748 for _ in 0..10 {
3749 x += 1;
3750 }
3751 }
3752 "};
3753 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3754 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3755 let range = buffer.read_with(cx, |buffer, cx| {
3756 let snapshot = buffer.snapshot(cx);
3757 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(4, 5))
3758 });
3759 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3760 let codegen = cx.new(|cx| {
3761 CodegenAlternative::new(
3762 buffer.clone(),
3763 range.clone(),
3764 true,
3765 None,
3766 prompt_builder,
3767 cx,
3768 )
3769 });
3770
3771 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3772
3773 let mut new_text = concat!(
3774 " let mut x = 0;\n",
3775 " while x < 10 {\n",
3776 " x += 1;\n",
3777 " }",
3778 );
3779 while !new_text.is_empty() {
3780 let max_len = cmp::min(new_text.len(), 10);
3781 let len = rng.gen_range(1..=max_len);
3782 let (chunk, suffix) = new_text.split_at(len);
3783 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3784 new_text = suffix;
3785 cx.background_executor.run_until_parked();
3786 }
3787 drop(chunks_tx);
3788 cx.background_executor.run_until_parked();
3789
3790 assert_eq!(
3791 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3792 indoc! {"
3793 fn main() {
3794 let mut x = 0;
3795 while x < 10 {
3796 x += 1;
3797 }
3798 }
3799 "}
3800 );
3801 }
3802
3803 #[gpui::test(iterations = 10)]
3804 async fn test_autoindent_when_generating_past_indentation(
3805 cx: &mut TestAppContext,
3806 mut rng: StdRng,
3807 ) {
3808 cx.set_global(cx.update(SettingsStore::test));
3809 cx.update(language_settings::init);
3810
3811 let text = indoc! {"
3812 fn main() {
3813 le
3814 }
3815 "};
3816 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3817 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3818 let range = buffer.read_with(cx, |buffer, cx| {
3819 let snapshot = buffer.snapshot(cx);
3820 snapshot.anchor_before(Point::new(1, 6))..snapshot.anchor_after(Point::new(1, 6))
3821 });
3822 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3823 let codegen = cx.new(|cx| {
3824 CodegenAlternative::new(
3825 buffer.clone(),
3826 range.clone(),
3827 true,
3828 None,
3829 prompt_builder,
3830 cx,
3831 )
3832 });
3833
3834 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3835
3836 cx.background_executor.run_until_parked();
3837
3838 let mut new_text = concat!(
3839 "t mut x = 0;\n",
3840 "while x < 10 {\n",
3841 " x += 1;\n",
3842 "}", //
3843 );
3844 while !new_text.is_empty() {
3845 let max_len = cmp::min(new_text.len(), 10);
3846 let len = rng.gen_range(1..=max_len);
3847 let (chunk, suffix) = new_text.split_at(len);
3848 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3849 new_text = suffix;
3850 cx.background_executor.run_until_parked();
3851 }
3852 drop(chunks_tx);
3853 cx.background_executor.run_until_parked();
3854
3855 assert_eq!(
3856 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3857 indoc! {"
3858 fn main() {
3859 let mut x = 0;
3860 while x < 10 {
3861 x += 1;
3862 }
3863 }
3864 "}
3865 );
3866 }
3867
3868 #[gpui::test(iterations = 10)]
3869 async fn test_autoindent_when_generating_before_indentation(
3870 cx: &mut TestAppContext,
3871 mut rng: StdRng,
3872 ) {
3873 cx.update(LanguageModelRegistry::test);
3874 cx.set_global(cx.update(SettingsStore::test));
3875 cx.update(language_settings::init);
3876
3877 let text = concat!(
3878 "fn main() {\n",
3879 " \n",
3880 "}\n" //
3881 );
3882 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
3883 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3884 let range = buffer.read_with(cx, |buffer, cx| {
3885 let snapshot = buffer.snapshot(cx);
3886 snapshot.anchor_before(Point::new(1, 2))..snapshot.anchor_after(Point::new(1, 2))
3887 });
3888 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3889 let codegen = cx.new(|cx| {
3890 CodegenAlternative::new(
3891 buffer.clone(),
3892 range.clone(),
3893 true,
3894 None,
3895 prompt_builder,
3896 cx,
3897 )
3898 });
3899
3900 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3901
3902 cx.background_executor.run_until_parked();
3903
3904 let mut new_text = concat!(
3905 "let mut x = 0;\n",
3906 "while x < 10 {\n",
3907 " x += 1;\n",
3908 "}", //
3909 );
3910 while !new_text.is_empty() {
3911 let max_len = cmp::min(new_text.len(), 10);
3912 let len = rng.gen_range(1..=max_len);
3913 let (chunk, suffix) = new_text.split_at(len);
3914 chunks_tx.unbounded_send(chunk.to_string()).unwrap();
3915 new_text = suffix;
3916 cx.background_executor.run_until_parked();
3917 }
3918 drop(chunks_tx);
3919 cx.background_executor.run_until_parked();
3920
3921 assert_eq!(
3922 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3923 indoc! {"
3924 fn main() {
3925 let mut x = 0;
3926 while x < 10 {
3927 x += 1;
3928 }
3929 }
3930 "}
3931 );
3932 }
3933
3934 #[gpui::test(iterations = 10)]
3935 async fn test_autoindent_respects_tabs_in_selection(cx: &mut TestAppContext) {
3936 cx.update(LanguageModelRegistry::test);
3937 cx.set_global(cx.update(SettingsStore::test));
3938 cx.update(language_settings::init);
3939
3940 let text = indoc! {"
3941 func main() {
3942 \tx := 0
3943 \tfor i := 0; i < 10; i++ {
3944 \t\tx++
3945 \t}
3946 }
3947 "};
3948 let buffer = cx.new(|cx| Buffer::local(text, cx));
3949 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
3950 let range = buffer.read_with(cx, |buffer, cx| {
3951 let snapshot = buffer.snapshot(cx);
3952 snapshot.anchor_before(Point::new(0, 0))..snapshot.anchor_after(Point::new(4, 2))
3953 });
3954 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3955 let codegen = cx.new(|cx| {
3956 CodegenAlternative::new(
3957 buffer.clone(),
3958 range.clone(),
3959 true,
3960 None,
3961 prompt_builder,
3962 cx,
3963 )
3964 });
3965
3966 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
3967 let new_text = concat!(
3968 "func main() {\n",
3969 "\tx := 0\n",
3970 "\tfor x < 10 {\n",
3971 "\t\tx++\n",
3972 "\t}", //
3973 );
3974 chunks_tx.unbounded_send(new_text.to_string()).unwrap();
3975 drop(chunks_tx);
3976 cx.background_executor.run_until_parked();
3977
3978 assert_eq!(
3979 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
3980 indoc! {"
3981 func main() {
3982 \tx := 0
3983 \tfor x < 10 {
3984 \t\tx++
3985 \t}
3986 }
3987 "}
3988 );
3989 }
3990
3991 #[gpui::test]
3992 async fn test_inactive_codegen_alternative(cx: &mut TestAppContext) {
3993 cx.update(LanguageModelRegistry::test);
3994 cx.set_global(cx.update(SettingsStore::test));
3995 cx.update(language_settings::init);
3996
3997 let text = indoc! {"
3998 fn main() {
3999 let x = 0;
4000 }
4001 "};
4002 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(Arc::new(rust_lang()), cx));
4003 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
4004 let range = buffer.read_with(cx, |buffer, cx| {
4005 let snapshot = buffer.snapshot(cx);
4006 snapshot.anchor_before(Point::new(1, 0))..snapshot.anchor_after(Point::new(1, 14))
4007 });
4008 let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
4009 let codegen = cx.new(|cx| {
4010 CodegenAlternative::new(
4011 buffer.clone(),
4012 range.clone(),
4013 false,
4014 None,
4015 prompt_builder,
4016 cx,
4017 )
4018 });
4019
4020 let chunks_tx = simulate_response_stream(codegen.clone(), cx);
4021 chunks_tx
4022 .unbounded_send("let mut x = 0;\nx += 1;".to_string())
4023 .unwrap();
4024 drop(chunks_tx);
4025 cx.run_until_parked();
4026
4027 // The codegen is inactive, so the buffer doesn't get modified.
4028 assert_eq!(
4029 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4030 text
4031 );
4032
4033 // Activating the codegen applies the changes.
4034 codegen.update(cx, |codegen, cx| codegen.set_active(true, cx));
4035 assert_eq!(
4036 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4037 indoc! {"
4038 fn main() {
4039 let mut x = 0;
4040 x += 1;
4041 }
4042 "}
4043 );
4044
4045 // Deactivating the codegen undoes the changes.
4046 codegen.update(cx, |codegen, cx| codegen.set_active(false, cx));
4047 cx.run_until_parked();
4048 assert_eq!(
4049 buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx).text()),
4050 text
4051 );
4052 }
4053
4054 #[gpui::test]
4055 async fn test_strip_invalid_spans_from_codeblock() {
4056 assert_chunks("Lorem ipsum dolor", "Lorem ipsum dolor").await;
4057 assert_chunks("```\nLorem ipsum dolor", "Lorem ipsum dolor").await;
4058 assert_chunks("```\nLorem ipsum dolor\n```", "Lorem ipsum dolor").await;
4059 assert_chunks(
4060 "```html\n```js\nLorem ipsum dolor\n```\n```",
4061 "```js\nLorem ipsum dolor\n```",
4062 )
4063 .await;
4064 assert_chunks("``\nLorem ipsum dolor\n```", "``\nLorem ipsum dolor\n```").await;
4065 assert_chunks("Lorem<|CURSOR|> ipsum", "Lorem ipsum").await;
4066 assert_chunks("Lorem ipsum", "Lorem ipsum").await;
4067 assert_chunks("```\n<|CURSOR|>Lorem ipsum\n```", "Lorem ipsum").await;
4068
4069 async fn assert_chunks(text: &str, expected_text: &str) {
4070 for chunk_size in 1..=text.len() {
4071 let actual_text = StripInvalidSpans::new(chunks(text, chunk_size))
4072 .map(|chunk| chunk.unwrap())
4073 .collect::<String>()
4074 .await;
4075 assert_eq!(
4076 actual_text, expected_text,
4077 "failed to strip invalid spans, chunk size: {}",
4078 chunk_size
4079 );
4080 }
4081 }
4082
4083 fn chunks(text: &str, size: usize) -> impl Stream<Item = Result<String>> {
4084 stream::iter(
4085 text.chars()
4086 .collect::<Vec<_>>()
4087 .chunks(size)
4088 .map(|chunk| Ok(chunk.iter().collect::<String>()))
4089 .collect::<Vec<_>>(),
4090 )
4091 }
4092 }
4093
4094 fn simulate_response_stream(
4095 codegen: Entity<CodegenAlternative>,
4096 cx: &mut TestAppContext,
4097 ) -> mpsc::UnboundedSender<String> {
4098 let (chunks_tx, chunks_rx) = mpsc::unbounded();
4099 codegen.update(cx, |codegen, cx| {
4100 codegen.handle_stream(
4101 String::new(),
4102 String::new(),
4103 None,
4104 future::ready(Ok(LanguageModelTextStream {
4105 message_id: None,
4106 stream: chunks_rx.map(Ok).boxed(),
4107 last_token_usage: Arc::new(Mutex::new(TokenUsage::default())),
4108 })),
4109 cx,
4110 );
4111 });
4112 chunks_tx
4113 }
4114
4115 fn rust_lang() -> Language {
4116 Language::new(
4117 LanguageConfig {
4118 name: "Rust".into(),
4119 matcher: LanguageMatcher {
4120 path_suffixes: vec!["rs".to_string()],
4121 ..Default::default()
4122 },
4123 ..Default::default()
4124 },
4125 Some(tree_sitter_rust::LANGUAGE.into()),
4126 )
4127 .with_indents_query(
4128 r#"
4129 (call_expression) @indent
4130 (field_expression) @indent
4131 (_ "(" ")" @end) @indent
4132 (_ "{" "}" @end) @indent
4133 "#,
4134 )
4135 .unwrap()
4136 }
4137}