1mod block_map;
2mod fold_map;
3mod tab_map;
4mod wrap_map;
5
6use crate::{Anchor, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint};
7use block_map::{BlockMap, BlockPoint};
8use collections::{HashMap, HashSet};
9use fold_map::FoldMap;
10use gpui::{
11 fonts::{FontId, HighlightStyle},
12 Entity, ModelContext, ModelHandle,
13};
14use language::{Point, Subscription as BufferSubscription};
15use std::{any::TypeId, fmt::Debug, ops::Range, sync::Arc};
16use sum_tree::{Bias, TreeMap};
17use tab_map::TabMap;
18use wrap_map::WrapMap;
19
20pub use block_map::{
21 BlockBufferRows as DisplayBufferRows, BlockChunks as DisplayChunks, BlockContext,
22 BlockDisposition, BlockId, BlockProperties, RenderBlock, TransformBlock,
23};
24
25pub trait ToDisplayPoint {
26 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint;
27}
28
29type TextHighlights = TreeMap<Option<TypeId>, Arc<(HighlightStyle, Vec<Range<Anchor>>)>>;
30
31pub struct DisplayMap {
32 buffer: ModelHandle<MultiBuffer>,
33 buffer_subscription: BufferSubscription,
34 fold_map: FoldMap,
35 tab_map: TabMap,
36 wrap_map: ModelHandle<WrapMap>,
37 block_map: BlockMap,
38 text_highlights: TextHighlights,
39 pub clip_at_line_ends: bool,
40}
41
42impl Entity for DisplayMap {
43 type Event = ();
44}
45
46impl DisplayMap {
47 pub fn new(
48 buffer: ModelHandle<MultiBuffer>,
49 tab_size: usize,
50 font_id: FontId,
51 font_size: f32,
52 wrap_width: Option<f32>,
53 buffer_header_height: u8,
54 excerpt_header_height: u8,
55 cx: &mut ModelContext<Self>,
56 ) -> Self {
57 let buffer_subscription = buffer.update(cx, |buffer, _| buffer.subscribe());
58 let (fold_map, snapshot) = FoldMap::new(buffer.read(cx).snapshot(cx));
59 let (tab_map, snapshot) = TabMap::new(snapshot, tab_size);
60 let (wrap_map, snapshot) = WrapMap::new(snapshot, font_id, font_size, wrap_width, cx);
61 let block_map = BlockMap::new(snapshot, buffer_header_height, excerpt_header_height);
62 cx.observe(&wrap_map, |_, _, cx| cx.notify()).detach();
63 DisplayMap {
64 buffer,
65 buffer_subscription,
66 fold_map,
67 tab_map,
68 wrap_map,
69 block_map,
70 text_highlights: Default::default(),
71 clip_at_line_ends: false,
72 }
73 }
74
75 pub fn snapshot(&self, cx: &mut ModelContext<Self>) -> DisplaySnapshot {
76 let buffer_snapshot = self.buffer.read(cx).snapshot(cx);
77 let edits = self.buffer_subscription.consume().into_inner();
78 let (folds_snapshot, edits) = self.fold_map.read(buffer_snapshot, edits);
79 let (tabs_snapshot, edits) = self.tab_map.sync(folds_snapshot.clone(), edits);
80 let (wraps_snapshot, edits) = self
81 .wrap_map
82 .update(cx, |map, cx| map.sync(tabs_snapshot.clone(), edits, cx));
83 let blocks_snapshot = self.block_map.read(wraps_snapshot.clone(), edits);
84
85 DisplaySnapshot {
86 buffer_snapshot: self.buffer.read(cx).snapshot(cx),
87 folds_snapshot,
88 tabs_snapshot,
89 wraps_snapshot,
90 blocks_snapshot,
91 text_highlights: self.text_highlights.clone(),
92 clip_at_line_ends: self.clip_at_line_ends,
93 }
94 }
95
96 pub fn fold<T: ToOffset>(
97 &mut self,
98 ranges: impl IntoIterator<Item = Range<T>>,
99 cx: &mut ModelContext<Self>,
100 ) {
101 let snapshot = self.buffer.read(cx).snapshot(cx);
102 let edits = self.buffer_subscription.consume().into_inner();
103 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
104 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
105 let (snapshot, edits) = self
106 .wrap_map
107 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
108 self.block_map.read(snapshot, edits);
109 let (snapshot, edits) = fold_map.fold(ranges);
110 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
111 let (snapshot, edits) = self
112 .wrap_map
113 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
114 self.block_map.read(snapshot, edits);
115 }
116
117 pub fn unfold<T: ToOffset>(
118 &mut self,
119 ranges: impl IntoIterator<Item = Range<T>>,
120 inclusive: bool,
121 cx: &mut ModelContext<Self>,
122 ) {
123 let snapshot = self.buffer.read(cx).snapshot(cx);
124 let edits = self.buffer_subscription.consume().into_inner();
125 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
126 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
127 let (snapshot, edits) = self
128 .wrap_map
129 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
130 self.block_map.read(snapshot, edits);
131 let (snapshot, edits) = fold_map.unfold(ranges, inclusive);
132 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
133 let (snapshot, edits) = self
134 .wrap_map
135 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
136 self.block_map.read(snapshot, edits);
137 }
138
139 pub fn insert_blocks(
140 &mut self,
141 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
142 cx: &mut ModelContext<Self>,
143 ) -> Vec<BlockId> {
144 let snapshot = self.buffer.read(cx).snapshot(cx);
145 let edits = self.buffer_subscription.consume().into_inner();
146 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
147 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
148 let (snapshot, edits) = self
149 .wrap_map
150 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
151 let mut block_map = self.block_map.write(snapshot, edits);
152 block_map.insert(blocks)
153 }
154
155 pub fn replace_blocks(&mut self, styles: HashMap<BlockId, RenderBlock>) {
156 self.block_map.replace(styles);
157 }
158
159 pub fn remove_blocks(&mut self, ids: HashSet<BlockId>, cx: &mut ModelContext<Self>) {
160 let snapshot = self.buffer.read(cx).snapshot(cx);
161 let edits = self.buffer_subscription.consume().into_inner();
162 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
163 let (snapshot, edits) = self.tab_map.sync(snapshot, edits);
164 let (snapshot, edits) = self
165 .wrap_map
166 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
167 let mut block_map = self.block_map.write(snapshot, edits);
168 block_map.remove(ids);
169 }
170
171 pub fn highlight_text(
172 &mut self,
173 type_id: TypeId,
174 ranges: Vec<Range<Anchor>>,
175 style: HighlightStyle,
176 ) {
177 self.text_highlights
178 .insert(Some(type_id), Arc::new((style, ranges)));
179 }
180
181 pub fn clear_text_highlights(
182 &mut self,
183 type_id: TypeId,
184 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
185 self.text_highlights.remove(&Some(type_id))
186 }
187
188 pub fn set_font(&self, font_id: FontId, font_size: f32, cx: &mut ModelContext<Self>) {
189 self.wrap_map
190 .update(cx, |map, cx| map.set_font(font_id, font_size, cx));
191 }
192
193 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut ModelContext<Self>) -> bool {
194 self.wrap_map
195 .update(cx, |map, cx| map.set_wrap_width(width, cx))
196 }
197
198 #[cfg(test)]
199 pub fn is_rewrapping(&self, cx: &gpui::AppContext) -> bool {
200 self.wrap_map.read(cx).is_rewrapping()
201 }
202}
203
204pub struct DisplaySnapshot {
205 pub buffer_snapshot: MultiBufferSnapshot,
206 folds_snapshot: fold_map::FoldSnapshot,
207 tabs_snapshot: tab_map::TabSnapshot,
208 wraps_snapshot: wrap_map::WrapSnapshot,
209 blocks_snapshot: block_map::BlockSnapshot,
210 text_highlights: TextHighlights,
211 clip_at_line_ends: bool,
212}
213
214impl DisplaySnapshot {
215 #[cfg(test)]
216 pub fn fold_count(&self) -> usize {
217 self.folds_snapshot.fold_count()
218 }
219
220 pub fn is_empty(&self) -> bool {
221 self.buffer_snapshot.len() == 0
222 }
223
224 pub fn buffer_rows<'a>(&'a self, start_row: u32) -> DisplayBufferRows<'a> {
225 self.blocks_snapshot.buffer_rows(start_row)
226 }
227
228 pub fn max_buffer_row(&self) -> u32 {
229 self.buffer_snapshot.max_buffer_row()
230 }
231
232 pub fn prev_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
233 loop {
234 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Left);
235 *fold_point.column_mut() = 0;
236 point = fold_point.to_buffer_point(&self.folds_snapshot);
237
238 let mut display_point = self.point_to_display_point(point, Bias::Left);
239 *display_point.column_mut() = 0;
240 let next_point = self.display_point_to_point(display_point, Bias::Left);
241 if next_point == point {
242 return (point, display_point);
243 }
244 point = next_point;
245 }
246 }
247
248 pub fn next_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
249 loop {
250 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Right);
251 *fold_point.column_mut() = self.folds_snapshot.line_len(fold_point.row());
252 point = fold_point.to_buffer_point(&self.folds_snapshot);
253
254 let mut display_point = self.point_to_display_point(point, Bias::Right);
255 *display_point.column_mut() = self.line_len(display_point.row());
256 let next_point = self.display_point_to_point(display_point, Bias::Right);
257 if next_point == point {
258 return (point, display_point);
259 }
260 point = next_point;
261 }
262 }
263
264 fn point_to_display_point(&self, point: Point, bias: Bias) -> DisplayPoint {
265 let fold_point = self.folds_snapshot.to_fold_point(point, bias);
266 let tab_point = self.tabs_snapshot.to_tab_point(fold_point);
267 let wrap_point = self.wraps_snapshot.from_tab_point(tab_point);
268 let block_point = self.blocks_snapshot.to_block_point(wrap_point);
269 DisplayPoint(block_point)
270 }
271
272 fn display_point_to_point(&self, point: DisplayPoint, bias: Bias) -> Point {
273 let block_point = point.0;
274 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
275 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
276 let fold_point = self.tabs_snapshot.to_fold_point(tab_point, bias).0;
277 fold_point.to_buffer_point(&self.folds_snapshot)
278 }
279
280 pub fn max_point(&self) -> DisplayPoint {
281 DisplayPoint(self.blocks_snapshot.max_point())
282 }
283
284 pub fn text_chunks(&self, display_row: u32) -> impl Iterator<Item = &str> {
285 self.blocks_snapshot
286 .chunks(display_row..self.max_point().row() + 1, false, None)
287 .map(|h| h.text)
288 }
289
290 pub fn chunks<'a>(
291 &'a self,
292 display_rows: Range<u32>,
293 language_aware: bool,
294 ) -> DisplayChunks<'a> {
295 self.blocks_snapshot
296 .chunks(display_rows, language_aware, Some(&self.text_highlights))
297 }
298
299 pub fn chars_at<'a>(&'a self, point: DisplayPoint) -> impl Iterator<Item = char> + 'a {
300 let mut column = 0;
301 let mut chars = self.text_chunks(point.row()).flat_map(str::chars);
302 while column < point.column() {
303 if let Some(c) = chars.next() {
304 column += c.len_utf8() as u32;
305 } else {
306 break;
307 }
308 }
309 chars
310 }
311
312 pub fn column_to_chars(&self, display_row: u32, target: u32) -> u32 {
313 let mut count = 0;
314 let mut column = 0;
315 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
316 if column >= target {
317 break;
318 }
319 count += 1;
320 column += c.len_utf8() as u32;
321 }
322 count
323 }
324
325 pub fn column_from_chars(&self, display_row: u32, char_count: u32) -> u32 {
326 let mut count = 0;
327 let mut column = 0;
328 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
329 if c == '\n' || count >= char_count {
330 break;
331 }
332 count += 1;
333 column += c.len_utf8() as u32;
334 }
335 column
336 }
337
338 pub fn clip_point(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
339 let mut clipped = self.blocks_snapshot.clip_point(point.0, bias);
340 if self.clip_at_line_ends && clipped.column == self.line_len(clipped.row) {
341 clipped.column = clipped.column.saturating_sub(1);
342 clipped = self.blocks_snapshot.clip_point(clipped, Bias::Left);
343 }
344 DisplayPoint(clipped)
345 }
346
347 pub fn folds_in_range<'a, T>(
348 &'a self,
349 range: Range<T>,
350 ) -> impl Iterator<Item = &'a Range<Anchor>>
351 where
352 T: ToOffset,
353 {
354 self.folds_snapshot.folds_in_range(range)
355 }
356
357 pub fn blocks_in_range<'a>(
358 &'a self,
359 rows: Range<u32>,
360 ) -> impl Iterator<Item = (u32, &'a TransformBlock)> {
361 self.blocks_snapshot.blocks_in_range(rows)
362 }
363
364 pub fn intersects_fold<T: ToOffset>(&self, offset: T) -> bool {
365 self.folds_snapshot.intersects_fold(offset)
366 }
367
368 pub fn is_line_folded(&self, display_row: u32) -> bool {
369 let block_point = BlockPoint(Point::new(display_row, 0));
370 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
371 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
372 self.folds_snapshot.is_line_folded(tab_point.row())
373 }
374
375 pub fn is_block_line(&self, display_row: u32) -> bool {
376 self.blocks_snapshot.is_block_line(display_row)
377 }
378
379 pub fn soft_wrap_indent(&self, display_row: u32) -> Option<u32> {
380 let wrap_row = self
381 .blocks_snapshot
382 .to_wrap_point(BlockPoint::new(display_row, 0))
383 .row();
384 self.wraps_snapshot.soft_wrap_indent(wrap_row)
385 }
386
387 pub fn text(&self) -> String {
388 self.text_chunks(0).collect()
389 }
390
391 pub fn line(&self, display_row: u32) -> String {
392 let mut result = String::new();
393 for chunk in self.text_chunks(display_row) {
394 if let Some(ix) = chunk.find('\n') {
395 result.push_str(&chunk[0..ix]);
396 break;
397 } else {
398 result.push_str(chunk);
399 }
400 }
401 result
402 }
403
404 pub fn line_indent(&self, display_row: u32) -> (u32, bool) {
405 let mut indent = 0;
406 let mut is_blank = true;
407 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
408 if c == ' ' {
409 indent += 1;
410 } else {
411 is_blank = c == '\n';
412 break;
413 }
414 }
415 (indent, is_blank)
416 }
417
418 pub fn line_len(&self, row: u32) -> u32 {
419 self.blocks_snapshot.line_len(row)
420 }
421
422 pub fn longest_row(&self) -> u32 {
423 self.blocks_snapshot.longest_row()
424 }
425}
426
427#[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq)]
428pub struct DisplayPoint(BlockPoint);
429
430impl Debug for DisplayPoint {
431 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
432 f.write_fmt(format_args!(
433 "DisplayPoint({}, {})",
434 self.row(),
435 self.column()
436 ))
437 }
438}
439
440impl DisplayPoint {
441 pub fn new(row: u32, column: u32) -> Self {
442 Self(BlockPoint(Point::new(row, column)))
443 }
444
445 pub fn zero() -> Self {
446 Self::new(0, 0)
447 }
448
449 pub fn is_zero(&self) -> bool {
450 self.0.is_zero()
451 }
452
453 pub fn row(self) -> u32 {
454 self.0.row
455 }
456
457 pub fn column(self) -> u32 {
458 self.0.column
459 }
460
461 pub fn row_mut(&mut self) -> &mut u32 {
462 &mut self.0.row
463 }
464
465 pub fn column_mut(&mut self) -> &mut u32 {
466 &mut self.0.column
467 }
468
469 pub fn to_point(self, map: &DisplaySnapshot) -> Point {
470 map.display_point_to_point(self, Bias::Left)
471 }
472
473 pub fn to_offset(self, map: &DisplaySnapshot, bias: Bias) -> usize {
474 let unblocked_point = map.blocks_snapshot.to_wrap_point(self.0);
475 let unwrapped_point = map.wraps_snapshot.to_tab_point(unblocked_point);
476 let unexpanded_point = map.tabs_snapshot.to_fold_point(unwrapped_point, bias).0;
477 unexpanded_point.to_buffer_offset(&map.folds_snapshot)
478 }
479}
480
481impl ToDisplayPoint for usize {
482 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
483 map.point_to_display_point(self.to_point(&map.buffer_snapshot), Bias::Left)
484 }
485}
486
487impl ToDisplayPoint for Point {
488 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
489 map.point_to_display_point(*self, Bias::Left)
490 }
491}
492
493impl ToDisplayPoint for Anchor {
494 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
495 self.to_point(&map.buffer_snapshot).to_display_point(map)
496 }
497}
498
499#[cfg(test)]
500pub mod tests {
501 use super::*;
502 use crate::{movement, test::marked_display_snapshot};
503 use gpui::{color::Color, elements::*, test::observe, MutableAppContext};
504 use language::{Buffer, Language, LanguageConfig, RandomCharIter, SelectionGoal};
505 use rand::{prelude::*, Rng};
506 use smol::stream::StreamExt;
507 use std::{env, sync::Arc};
508 use theme::SyntaxTheme;
509 use util::test::{marked_text_ranges, sample_text};
510 use Bias::*;
511
512 #[gpui::test(iterations = 100)]
513 async fn test_random_display_map(cx: &mut gpui::TestAppContext, mut rng: StdRng) {
514 cx.foreground().set_block_on_ticks(0..=50);
515 cx.foreground().forbid_parking();
516 let operations = env::var("OPERATIONS")
517 .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
518 .unwrap_or(10);
519
520 let font_cache = cx.font_cache().clone();
521 let tab_size = rng.gen_range(1..=4);
522 let buffer_start_excerpt_header_height = rng.gen_range(1..=5);
523 let excerpt_header_height = rng.gen_range(1..=5);
524 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
525 let font_id = font_cache
526 .select_font(family_id, &Default::default())
527 .unwrap();
528 let font_size = 14.0;
529 let max_wrap_width = 300.0;
530 let mut wrap_width = if rng.gen_bool(0.1) {
531 None
532 } else {
533 Some(rng.gen_range(0.0..=max_wrap_width))
534 };
535
536 log::info!("tab size: {}", tab_size);
537 log::info!("wrap width: {:?}", wrap_width);
538
539 let buffer = cx.update(|cx| {
540 if rng.gen() {
541 let len = rng.gen_range(0..10);
542 let text = RandomCharIter::new(&mut rng).take(len).collect::<String>();
543 MultiBuffer::build_simple(&text, cx)
544 } else {
545 MultiBuffer::build_random(&mut rng, cx)
546 }
547 });
548
549 let map = cx.add_model(|cx| {
550 DisplayMap::new(
551 buffer.clone(),
552 tab_size,
553 font_id,
554 font_size,
555 wrap_width,
556 buffer_start_excerpt_header_height,
557 excerpt_header_height,
558 cx,
559 )
560 });
561 let mut notifications = observe(&map, cx);
562 let mut fold_count = 0;
563 let mut blocks = Vec::new();
564
565 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
566 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
567 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
568 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
569 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
570 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
571 log::info!("display text: {:?}", snapshot.text());
572
573 for _i in 0..operations {
574 match rng.gen_range(0..100) {
575 0..=19 => {
576 wrap_width = if rng.gen_bool(0.2) {
577 None
578 } else {
579 Some(rng.gen_range(0.0..=max_wrap_width))
580 };
581 log::info!("setting wrap width to {:?}", wrap_width);
582 map.update(cx, |map, cx| map.set_wrap_width(wrap_width, cx));
583 }
584 20..=44 => {
585 map.update(cx, |map, cx| {
586 if rng.gen() || blocks.is_empty() {
587 let buffer = map.snapshot(cx).buffer_snapshot;
588 let block_properties = (0..rng.gen_range(1..=1))
589 .map(|_| {
590 let position =
591 buffer.anchor_after(buffer.clip_offset(
592 rng.gen_range(0..=buffer.len()),
593 Bias::Left,
594 ));
595
596 let disposition = if rng.gen() {
597 BlockDisposition::Above
598 } else {
599 BlockDisposition::Below
600 };
601 let height = rng.gen_range(1..5);
602 log::info!(
603 "inserting block {:?} {:?} with height {}",
604 disposition,
605 position.to_point(&buffer),
606 height
607 );
608 BlockProperties {
609 position,
610 height,
611 disposition,
612 render: Arc::new(|_| Empty::new().boxed()),
613 }
614 })
615 .collect::<Vec<_>>();
616 blocks.extend(map.insert_blocks(block_properties, cx));
617 } else {
618 blocks.shuffle(&mut rng);
619 let remove_count = rng.gen_range(1..=4.min(blocks.len()));
620 let block_ids_to_remove = (0..remove_count)
621 .map(|_| blocks.remove(rng.gen_range(0..blocks.len())))
622 .collect();
623 log::info!("removing block ids {:?}", block_ids_to_remove);
624 map.remove_blocks(block_ids_to_remove, cx);
625 }
626 });
627 }
628 45..=79 => {
629 let mut ranges = Vec::new();
630 for _ in 0..rng.gen_range(1..=3) {
631 buffer.read_with(cx, |buffer, cx| {
632 let buffer = buffer.read(cx);
633 let end = buffer.clip_offset(rng.gen_range(0..=buffer.len()), Right);
634 let start = buffer.clip_offset(rng.gen_range(0..=end), Left);
635 ranges.push(start..end);
636 });
637 }
638
639 if rng.gen() && fold_count > 0 {
640 log::info!("unfolding ranges: {:?}", ranges);
641 map.update(cx, |map, cx| {
642 map.unfold(ranges, true, cx);
643 });
644 } else {
645 log::info!("folding ranges: {:?}", ranges);
646 map.update(cx, |map, cx| {
647 map.fold(ranges, cx);
648 });
649 }
650 }
651 _ => {
652 buffer.update(cx, |buffer, cx| buffer.randomly_edit(&mut rng, 5, cx));
653 }
654 }
655
656 if map.read_with(cx, |map, cx| map.is_rewrapping(cx)) {
657 notifications.next().await.unwrap();
658 }
659
660 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
661 fold_count = snapshot.fold_count();
662 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
663 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
664 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
665 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
666 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
667 log::info!("display text: {:?}", snapshot.text());
668
669 // Line boundaries
670 let buffer = &snapshot.buffer_snapshot;
671 for _ in 0..5 {
672 let row = rng.gen_range(0..=buffer.max_point().row);
673 let column = rng.gen_range(0..=buffer.line_len(row));
674 let point = buffer.clip_point(Point::new(row, column), Left);
675
676 let (prev_buffer_bound, prev_display_bound) = snapshot.prev_line_boundary(point);
677 let (next_buffer_bound, next_display_bound) = snapshot.next_line_boundary(point);
678
679 assert!(prev_buffer_bound <= point);
680 assert!(next_buffer_bound >= point);
681 assert_eq!(prev_buffer_bound.column, 0);
682 assert_eq!(prev_display_bound.column(), 0);
683 if next_buffer_bound < buffer.max_point() {
684 assert_eq!(buffer.chars_at(next_buffer_bound).next(), Some('\n'));
685 }
686
687 assert_eq!(
688 prev_display_bound,
689 prev_buffer_bound.to_display_point(&snapshot),
690 "row boundary before {:?}. reported buffer row boundary: {:?}",
691 point,
692 prev_buffer_bound
693 );
694 assert_eq!(
695 next_display_bound,
696 next_buffer_bound.to_display_point(&snapshot),
697 "display row boundary after {:?}. reported buffer row boundary: {:?}",
698 point,
699 next_buffer_bound
700 );
701 assert_eq!(
702 prev_buffer_bound,
703 prev_display_bound.to_point(&snapshot),
704 "row boundary before {:?}. reported display row boundary: {:?}",
705 point,
706 prev_display_bound
707 );
708 assert_eq!(
709 next_buffer_bound,
710 next_display_bound.to_point(&snapshot),
711 "row boundary after {:?}. reported display row boundary: {:?}",
712 point,
713 next_display_bound
714 );
715 }
716
717 // Movement
718 let min_point = snapshot.clip_point(DisplayPoint::new(0, 0), Left);
719 let max_point = snapshot.clip_point(snapshot.max_point(), Right);
720 for _ in 0..5 {
721 let row = rng.gen_range(0..=snapshot.max_point().row());
722 let column = rng.gen_range(0..=snapshot.line_len(row));
723 let point = snapshot.clip_point(DisplayPoint::new(row, column), Left);
724
725 log::info!("Moving from point {:?}", point);
726
727 let moved_right = movement::right(&snapshot, point);
728 log::info!("Right {:?}", moved_right);
729 if point < max_point {
730 assert!(moved_right > point);
731 if point.column() == snapshot.line_len(point.row())
732 || snapshot.soft_wrap_indent(point.row()).is_some()
733 && point.column() == snapshot.line_len(point.row()) - 1
734 {
735 assert!(moved_right.row() > point.row());
736 }
737 } else {
738 assert_eq!(moved_right, point);
739 }
740
741 let moved_left = movement::left(&snapshot, point);
742 log::info!("Left {:?}", moved_left);
743 if point > min_point {
744 assert!(moved_left < point);
745 if point.column() == 0 {
746 assert!(moved_left.row() < point.row());
747 }
748 } else {
749 assert_eq!(moved_left, point);
750 }
751 }
752 }
753 }
754
755 #[gpui::test(retries = 5)]
756 fn test_soft_wraps(cx: &mut MutableAppContext) {
757 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
758 cx.foreground().forbid_parking();
759
760 let font_cache = cx.font_cache();
761
762 let tab_size = 4;
763 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
764 let font_id = font_cache
765 .select_font(family_id, &Default::default())
766 .unwrap();
767 let font_size = 12.0;
768 let wrap_width = Some(64.);
769
770 let text = "one two three four five\nsix seven eight";
771 let buffer = MultiBuffer::build_simple(text, cx);
772 let map = cx.add_model(|cx| {
773 DisplayMap::new(
774 buffer.clone(),
775 tab_size,
776 font_id,
777 font_size,
778 wrap_width,
779 1,
780 1,
781 cx,
782 )
783 });
784
785 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
786 assert_eq!(
787 snapshot.text_chunks(0).collect::<String>(),
788 "one two \nthree four \nfive\nsix seven \neight"
789 );
790 assert_eq!(
791 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Left),
792 DisplayPoint::new(0, 7)
793 );
794 assert_eq!(
795 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Right),
796 DisplayPoint::new(1, 0)
797 );
798 assert_eq!(
799 movement::right(&snapshot, DisplayPoint::new(0, 7)),
800 DisplayPoint::new(1, 0)
801 );
802 assert_eq!(
803 movement::left(&snapshot, DisplayPoint::new(1, 0)),
804 DisplayPoint::new(0, 7)
805 );
806 assert_eq!(
807 movement::up(&snapshot, DisplayPoint::new(1, 10), SelectionGoal::None),
808 (DisplayPoint::new(0, 7), SelectionGoal::Column(10))
809 );
810 assert_eq!(
811 movement::down(
812 &snapshot,
813 DisplayPoint::new(0, 7),
814 SelectionGoal::Column(10)
815 ),
816 (DisplayPoint::new(1, 10), SelectionGoal::Column(10))
817 );
818 assert_eq!(
819 movement::down(
820 &snapshot,
821 DisplayPoint::new(1, 10),
822 SelectionGoal::Column(10)
823 ),
824 (DisplayPoint::new(2, 4), SelectionGoal::Column(10))
825 );
826
827 let ix = snapshot.buffer_snapshot.text().find("seven").unwrap();
828 buffer.update(cx, |buffer, cx| {
829 buffer.edit(vec![ix..ix], "and ", cx);
830 });
831
832 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
833 assert_eq!(
834 snapshot.text_chunks(1).collect::<String>(),
835 "three four \nfive\nsix and \nseven eight"
836 );
837
838 // Re-wrap on font size changes
839 map.update(cx, |map, cx| map.set_font(font_id, font_size + 3., cx));
840
841 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
842 assert_eq!(
843 snapshot.text_chunks(1).collect::<String>(),
844 "three \nfour five\nsix and \nseven \neight"
845 )
846 }
847
848 #[gpui::test]
849 fn test_text_chunks(cx: &mut gpui::MutableAppContext) {
850 let text = sample_text(6, 6, 'a');
851 let buffer = MultiBuffer::build_simple(&text, cx);
852 let tab_size = 4;
853 let family_id = cx.font_cache().load_family(&["Helvetica"]).unwrap();
854 let font_id = cx
855 .font_cache()
856 .select_font(family_id, &Default::default())
857 .unwrap();
858 let font_size = 14.0;
859 let map = cx.add_model(|cx| {
860 DisplayMap::new(buffer.clone(), tab_size, font_id, font_size, None, 1, 1, cx)
861 });
862 buffer.update(cx, |buffer, cx| {
863 buffer.edit(
864 vec![
865 Point::new(1, 0)..Point::new(1, 0),
866 Point::new(1, 1)..Point::new(1, 1),
867 Point::new(2, 1)..Point::new(2, 1),
868 ],
869 "\t",
870 cx,
871 )
872 });
873
874 assert_eq!(
875 map.update(cx, |map, cx| map.snapshot(cx))
876 .text_chunks(1)
877 .collect::<String>()
878 .lines()
879 .next(),
880 Some(" b bbbbb")
881 );
882 assert_eq!(
883 map.update(cx, |map, cx| map.snapshot(cx))
884 .text_chunks(2)
885 .collect::<String>()
886 .lines()
887 .next(),
888 Some("c ccccc")
889 );
890 }
891
892 #[gpui::test]
893 async fn test_chunks(cx: &mut gpui::TestAppContext) {
894 use unindent::Unindent as _;
895
896 let text = r#"
897 fn outer() {}
898
899 mod module {
900 fn inner() {}
901 }"#
902 .unindent();
903
904 let theme = SyntaxTheme::new(vec![
905 ("mod.body".to_string(), Color::red().into()),
906 ("fn.name".to_string(), Color::blue().into()),
907 ]);
908 let language = Arc::new(
909 Language::new(
910 LanguageConfig {
911 name: "Test".into(),
912 path_suffixes: vec![".test".to_string()],
913 ..Default::default()
914 },
915 Some(tree_sitter_rust::language()),
916 )
917 .with_highlights_query(
918 r#"
919 (mod_item name: (identifier) body: _ @mod.body)
920 (function_item name: (identifier) @fn.name)
921 "#,
922 )
923 .unwrap(),
924 );
925 language.set_theme(&theme);
926
927 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
928 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
929 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
930
931 let tab_size = 2;
932 let font_cache = cx.font_cache();
933 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
934 let font_id = font_cache
935 .select_font(family_id, &Default::default())
936 .unwrap();
937 let font_size = 14.0;
938
939 let map = cx
940 .add_model(|cx| DisplayMap::new(buffer, tab_size, font_id, font_size, None, 1, 1, cx));
941 assert_eq!(
942 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
943 vec![
944 ("fn ".to_string(), None),
945 ("outer".to_string(), Some(Color::blue())),
946 ("() {}\n\nmod module ".to_string(), None),
947 ("{\n fn ".to_string(), Some(Color::red())),
948 ("inner".to_string(), Some(Color::blue())),
949 ("() {}\n}".to_string(), Some(Color::red())),
950 ]
951 );
952 assert_eq!(
953 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
954 vec![
955 (" fn ".to_string(), Some(Color::red())),
956 ("inner".to_string(), Some(Color::blue())),
957 ("() {}\n}".to_string(), Some(Color::red())),
958 ]
959 );
960
961 map.update(cx, |map, cx| {
962 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
963 });
964 assert_eq!(
965 cx.update(|cx| syntax_chunks(0..2, &map, &theme, cx)),
966 vec![
967 ("fn ".to_string(), None),
968 ("out".to_string(), Some(Color::blue())),
969 ("…".to_string(), None),
970 (" fn ".to_string(), Some(Color::red())),
971 ("inner".to_string(), Some(Color::blue())),
972 ("() {}\n}".to_string(), Some(Color::red())),
973 ]
974 );
975 }
976
977 #[gpui::test]
978 async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
979 use unindent::Unindent as _;
980
981 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
982
983 let text = r#"
984 fn outer() {}
985
986 mod module {
987 fn inner() {}
988 }"#
989 .unindent();
990
991 let theme = SyntaxTheme::new(vec![
992 ("mod.body".to_string(), Color::red().into()),
993 ("fn.name".to_string(), Color::blue().into()),
994 ]);
995 let language = Arc::new(
996 Language::new(
997 LanguageConfig {
998 name: "Test".into(),
999 path_suffixes: vec![".test".to_string()],
1000 ..Default::default()
1001 },
1002 Some(tree_sitter_rust::language()),
1003 )
1004 .with_highlights_query(
1005 r#"
1006 (mod_item name: (identifier) body: _ @mod.body)
1007 (function_item name: (identifier) @fn.name)
1008 "#,
1009 )
1010 .unwrap(),
1011 );
1012 language.set_theme(&theme);
1013
1014 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1015 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1016 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1017
1018 let font_cache = cx.font_cache();
1019
1020 let tab_size = 4;
1021 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1022 let font_id = font_cache
1023 .select_font(family_id, &Default::default())
1024 .unwrap();
1025 let font_size = 16.0;
1026
1027 let map = cx.add_model(|cx| {
1028 DisplayMap::new(buffer, tab_size, font_id, font_size, Some(40.0), 1, 1, cx)
1029 });
1030 assert_eq!(
1031 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1032 [
1033 ("fn \n".to_string(), None),
1034 ("oute\nr".to_string(), Some(Color::blue())),
1035 ("() \n{}\n\n".to_string(), None),
1036 ]
1037 );
1038 assert_eq!(
1039 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1040 [("{}\n\n".to_string(), None)]
1041 );
1042
1043 map.update(cx, |map, cx| {
1044 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1045 });
1046 assert_eq!(
1047 cx.update(|cx| syntax_chunks(1..4, &map, &theme, cx)),
1048 [
1049 ("out".to_string(), Some(Color::blue())),
1050 ("…\n".to_string(), None),
1051 (" \nfn ".to_string(), Some(Color::red())),
1052 ("i\n".to_string(), Some(Color::blue()))
1053 ]
1054 );
1055 }
1056
1057 #[gpui::test]
1058 async fn test_chunks_with_text_highlights(cx: &mut gpui::TestAppContext) {
1059 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1060
1061 let theme = SyntaxTheme::new(vec![
1062 ("operator".to_string(), Color::red().into()),
1063 ("string".to_string(), Color::green().into()),
1064 ]);
1065 let language = Arc::new(
1066 Language::new(
1067 LanguageConfig {
1068 name: "Test".into(),
1069 path_suffixes: vec![".test".to_string()],
1070 ..Default::default()
1071 },
1072 Some(tree_sitter_rust::language()),
1073 )
1074 .with_highlights_query(
1075 r#"
1076 ":" @operator
1077 (string_literal) @string
1078 "#,
1079 )
1080 .unwrap(),
1081 );
1082 language.set_theme(&theme);
1083
1084 let (text, highlighted_ranges) = marked_text_ranges(r#"const[] [a]: B = "c [d]""#);
1085
1086 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1087 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1088
1089 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1090 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
1091
1092 let font_cache = cx.font_cache();
1093 let tab_size = 4;
1094 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1095 let font_id = font_cache
1096 .select_font(family_id, &Default::default())
1097 .unwrap();
1098 let font_size = 16.0;
1099 let map = cx
1100 .add_model(|cx| DisplayMap::new(buffer, tab_size, font_id, font_size, None, 1, 1, cx));
1101
1102 enum MyType {}
1103
1104 let style = HighlightStyle {
1105 color: Some(Color::blue()),
1106 ..Default::default()
1107 };
1108
1109 map.update(cx, |map, _cx| {
1110 map.highlight_text(
1111 TypeId::of::<MyType>(),
1112 highlighted_ranges
1113 .into_iter()
1114 .map(|range| {
1115 buffer_snapshot.anchor_before(range.start)
1116 ..buffer_snapshot.anchor_before(range.end)
1117 })
1118 .collect(),
1119 style,
1120 );
1121 });
1122
1123 assert_eq!(
1124 cx.update(|cx| chunks(0..10, &map, &theme, cx)),
1125 [
1126 ("const ".to_string(), None, None),
1127 ("a".to_string(), None, Some(Color::blue())),
1128 (":".to_string(), Some(Color::red()), None),
1129 (" B = ".to_string(), None, None),
1130 ("\"c ".to_string(), Some(Color::green()), None),
1131 ("d".to_string(), Some(Color::green()), Some(Color::blue())),
1132 ("\"".to_string(), Some(Color::green()), None),
1133 ]
1134 );
1135 }
1136
1137 #[gpui::test]
1138 fn test_clip_point(cx: &mut gpui::MutableAppContext) {
1139 fn assert(text: &str, shift_right: bool, bias: Bias, cx: &mut gpui::MutableAppContext) {
1140 let (unmarked_snapshot, mut markers) = marked_display_snapshot(text, cx);
1141
1142 match bias {
1143 Bias::Left => {
1144 if shift_right {
1145 *markers[1].column_mut() += 1;
1146 }
1147
1148 assert_eq!(unmarked_snapshot.clip_point(markers[1], bias), markers[0])
1149 }
1150 Bias::Right => {
1151 if shift_right {
1152 *markers[0].column_mut() += 1;
1153 }
1154
1155 assert_eq!(
1156 unmarked_snapshot.clip_point(dbg!(markers[0]), bias),
1157 markers[1]
1158 )
1159 }
1160 };
1161 }
1162
1163 use Bias::{Left, Right};
1164 assert("||α", false, Left, cx);
1165 assert("||α", true, Left, cx);
1166 assert("||α", false, Right, cx);
1167 assert("|α|", true, Right, cx);
1168 assert("||✋", false, Left, cx);
1169 assert("||✋", true, Left, cx);
1170 assert("||✋", false, Right, cx);
1171 assert("|✋|", true, Right, cx);
1172 assert("||🍐", false, Left, cx);
1173 assert("||🍐", true, Left, cx);
1174 assert("||🍐", false, Right, cx);
1175 assert("|🍐|", true, Right, cx);
1176 assert("||\t", false, Left, cx);
1177 assert("||\t", true, Left, cx);
1178 assert("||\t", false, Right, cx);
1179 assert("|\t|", true, Right, cx);
1180 assert(" ||\t", false, Left, cx);
1181 assert(" ||\t", true, Left, cx);
1182 assert(" ||\t", false, Right, cx);
1183 assert(" |\t|", true, Right, cx);
1184 assert(" ||\t", false, Left, cx);
1185 assert(" ||\t", false, Right, cx);
1186 }
1187
1188 #[gpui::test]
1189 fn test_clip_at_line_ends(cx: &mut gpui::MutableAppContext) {
1190 fn assert(text: &str, cx: &mut gpui::MutableAppContext) {
1191 let (mut unmarked_snapshot, markers) = marked_display_snapshot(text, cx);
1192 unmarked_snapshot.clip_at_line_ends = true;
1193 assert_eq!(
1194 unmarked_snapshot.clip_point(markers[1], Bias::Left),
1195 markers[0]
1196 );
1197 }
1198
1199 assert("||", cx);
1200 assert("|a|", cx);
1201 assert("a|b|", cx);
1202 assert("a|α|", cx);
1203 }
1204
1205 #[gpui::test]
1206 fn test_tabs_with_multibyte_chars(cx: &mut gpui::MutableAppContext) {
1207 let text = "✅\t\tα\nβ\t\n🏀β\t\tγ";
1208 let buffer = MultiBuffer::build_simple(text, cx);
1209 let tab_size = 4;
1210 let font_cache = cx.font_cache();
1211 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1212 let font_id = font_cache
1213 .select_font(family_id, &Default::default())
1214 .unwrap();
1215 let font_size = 14.0;
1216
1217 let map = cx.add_model(|cx| {
1218 DisplayMap::new(buffer.clone(), tab_size, font_id, font_size, None, 1, 1, cx)
1219 });
1220 let map = map.update(cx, |map, cx| map.snapshot(cx));
1221 assert_eq!(map.text(), "✅ α\nβ \n🏀β γ");
1222 assert_eq!(
1223 map.text_chunks(0).collect::<String>(),
1224 "✅ α\nβ \n🏀β γ"
1225 );
1226 assert_eq!(map.text_chunks(1).collect::<String>(), "β \n🏀β γ");
1227 assert_eq!(map.text_chunks(2).collect::<String>(), "🏀β γ");
1228
1229 let point = Point::new(0, "✅\t\t".len() as u32);
1230 let display_point = DisplayPoint::new(0, "✅ ".len() as u32);
1231 assert_eq!(point.to_display_point(&map), display_point);
1232 assert_eq!(display_point.to_point(&map), point);
1233
1234 let point = Point::new(1, "β\t".len() as u32);
1235 let display_point = DisplayPoint::new(1, "β ".len() as u32);
1236 assert_eq!(point.to_display_point(&map), display_point);
1237 assert_eq!(display_point.to_point(&map), point,);
1238
1239 let point = Point::new(2, "🏀β\t\t".len() as u32);
1240 let display_point = DisplayPoint::new(2, "🏀β ".len() as u32);
1241 assert_eq!(point.to_display_point(&map), display_point);
1242 assert_eq!(display_point.to_point(&map), point,);
1243
1244 // Display points inside of expanded tabs
1245 assert_eq!(
1246 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1247 Point::new(0, "✅\t".len() as u32),
1248 );
1249 assert_eq!(
1250 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1251 Point::new(0, "✅".len() as u32),
1252 );
1253
1254 // Clipping display points inside of multi-byte characters
1255 assert_eq!(
1256 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Left),
1257 DisplayPoint::new(0, 0)
1258 );
1259 assert_eq!(
1260 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Bias::Right),
1261 DisplayPoint::new(0, "✅".len() as u32)
1262 );
1263 }
1264
1265 #[gpui::test]
1266 fn test_max_point(cx: &mut gpui::MutableAppContext) {
1267 let buffer = MultiBuffer::build_simple("aaa\n\t\tbbb", cx);
1268 let tab_size = 4;
1269 let font_cache = cx.font_cache();
1270 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1271 let font_id = font_cache
1272 .select_font(family_id, &Default::default())
1273 .unwrap();
1274 let font_size = 14.0;
1275 let map = cx.add_model(|cx| {
1276 DisplayMap::new(buffer.clone(), tab_size, font_id, font_size, None, 1, 1, cx)
1277 });
1278 assert_eq!(
1279 map.update(cx, |map, cx| map.snapshot(cx)).max_point(),
1280 DisplayPoint::new(1, 11)
1281 )
1282 }
1283
1284 fn syntax_chunks<'a>(
1285 rows: Range<u32>,
1286 map: &ModelHandle<DisplayMap>,
1287 theme: &'a SyntaxTheme,
1288 cx: &mut MutableAppContext,
1289 ) -> Vec<(String, Option<Color>)> {
1290 chunks(rows, map, theme, cx)
1291 .into_iter()
1292 .map(|(text, color, _)| (text, color))
1293 .collect()
1294 }
1295
1296 fn chunks<'a>(
1297 rows: Range<u32>,
1298 map: &ModelHandle<DisplayMap>,
1299 theme: &'a SyntaxTheme,
1300 cx: &mut MutableAppContext,
1301 ) -> Vec<(String, Option<Color>, Option<Color>)> {
1302 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1303 let mut chunks: Vec<(String, Option<Color>, Option<Color>)> = Vec::new();
1304 for chunk in snapshot.chunks(rows, true) {
1305 let syntax_color = chunk
1306 .syntax_highlight_id
1307 .and_then(|id| id.style(theme)?.color);
1308 let highlight_color = chunk.highlight_style.and_then(|style| style.color);
1309 if let Some((last_chunk, last_syntax_color, last_highlight_color)) = chunks.last_mut() {
1310 if syntax_color == *last_syntax_color && highlight_color == *last_highlight_color {
1311 last_chunk.push_str(chunk.text);
1312 continue;
1313 }
1314 }
1315 chunks.push((chunk.text.to_string(), syntax_color, highlight_color));
1316 }
1317 chunks
1318 }
1319}