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