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