1//! This module defines where the text should be displayed in an [`Editor`][Editor].
2//!
3//! Not literally though - rendering, layout and all that jazz is a responsibility of [`EditorElement`][EditorElement].
4//! Instead, [`DisplayMap`] decides where Inlays/Inlay hints are displayed, when
5//! to apply a soft wrap, where to add fold indicators, whether there are any tabs in the buffer that
6//! we display as spaces and where to display custom blocks (like diagnostics).
7//! Seems like a lot? That's because it is. [`DisplayMap`] is conceptually made up
8//! of several smaller structures that form a hierarchy (starting at the bottom):
9//! - [`InlayMap`] that decides where the [`Inlay`]s should be displayed.
10//! - [`FoldMap`] that decides where the fold indicators should be; it also tracks parts of a source file that are currently folded.
11//! - [`TabMap`] that keeps track of hard tabs in a buffer.
12//! - [`WrapMap`] that handles soft wrapping.
13//! - [`BlockMap`] that tracks custom blocks such as diagnostics that should be displayed within buffer.
14//! - [`DisplayMap`] that adds background highlights to the regions of text.
15//! Each one of those builds on top of preceding map.
16//!
17//! [Editor]: crate::Editor
18//! [EditorElement]: crate::element::EditorElement
19
20mod block_map;
21mod crease_map;
22mod custom_highlights;
23mod fold_map;
24mod inlay_map;
25pub(crate) mod invisibles;
26mod tab_map;
27mod wrap_map;
28
29use crate::{
30 hover_links::InlayHighlight, movement::TextLayoutDetails, EditorStyle, InlayId, RowExt,
31};
32pub use block_map::{
33 Block, BlockChunks as DisplayChunks, BlockContext, BlockId, BlockMap, BlockPlacement,
34 BlockPoint, BlockProperties, BlockRows, BlockStyle, CustomBlockId, RenderBlock,
35 StickyHeaderExcerpt,
36};
37use block_map::{BlockRow, BlockSnapshot};
38use collections::{HashMap, HashSet};
39pub use crease_map::*;
40pub use fold_map::{Fold, FoldId, FoldPlaceholder, FoldPoint};
41use fold_map::{FoldMap, FoldSnapshot};
42use gpui::{App, Context, Entity, Font, HighlightStyle, LineLayout, Pixels, UnderlineStyle};
43pub use inlay_map::Inlay;
44use inlay_map::{InlayMap, InlaySnapshot};
45pub use inlay_map::{InlayOffset, InlayPoint};
46use invisibles::{is_invisible, replacement};
47use language::{
48 language_settings::language_settings, ChunkRenderer, OffsetUtf16, Point,
49 Subscription as BufferSubscription,
50};
51use lsp::DiagnosticSeverity;
52use multi_buffer::{
53 Anchor, AnchorRangeExt, MultiBuffer, MultiBufferPoint, MultiBufferRow, MultiBufferSnapshot,
54 RowInfo, ToOffset, ToPoint,
55};
56use serde::Deserialize;
57use std::{
58 any::TypeId,
59 borrow::Cow,
60 fmt::Debug,
61 iter,
62 num::NonZeroU32,
63 ops::{Add, Range, Sub},
64 sync::Arc,
65};
66use sum_tree::{Bias, TreeMap};
67use tab_map::{TabMap, TabSnapshot};
68use text::{BufferId, LineIndent};
69use ui::{px, SharedString};
70use unicode_segmentation::UnicodeSegmentation;
71use wrap_map::{WrapMap, WrapSnapshot};
72
73#[derive(Copy, Clone, Debug, PartialEq, Eq)]
74pub enum FoldStatus {
75 Folded,
76 Foldable,
77}
78
79pub trait ToDisplayPoint {
80 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint;
81}
82
83type TextHighlights = TreeMap<TypeId, Arc<(HighlightStyle, Vec<Range<Anchor>>)>>;
84type InlayHighlights = TreeMap<TypeId, TreeMap<InlayId, (HighlightStyle, InlayHighlight)>>;
85
86/// Decides how text in a [`MultiBuffer`] should be displayed in a buffer, handling inlay hints,
87/// folding, hard tabs, soft wrapping, custom blocks (like diagnostics), and highlighting.
88///
89/// See the [module level documentation](self) for more information.
90pub struct DisplayMap {
91 /// The buffer that we are displaying.
92 buffer: Entity<MultiBuffer>,
93 buffer_subscription: BufferSubscription,
94 /// Decides where the [`Inlay`]s should be displayed.
95 inlay_map: InlayMap,
96 /// Decides where the fold indicators should be and tracks parts of a source file that are currently folded.
97 fold_map: FoldMap,
98 /// Keeps track of hard tabs in a buffer.
99 tab_map: TabMap,
100 /// Handles soft wrapping.
101 wrap_map: Entity<WrapMap>,
102 /// Tracks custom blocks such as diagnostics that should be displayed within buffer.
103 block_map: BlockMap,
104 /// Regions of text that should be highlighted.
105 text_highlights: TextHighlights,
106 /// Regions of inlays that should be highlighted.
107 inlay_highlights: InlayHighlights,
108 /// A container for explicitly foldable ranges, which supersede indentation based fold range suggestions.
109 crease_map: CreaseMap,
110 pub(crate) fold_placeholder: FoldPlaceholder,
111 pub clip_at_line_ends: bool,
112 pub(crate) masked: bool,
113}
114
115impl DisplayMap {
116 #[allow(clippy::too_many_arguments)]
117 pub fn new(
118 buffer: Entity<MultiBuffer>,
119 font: Font,
120 font_size: Pixels,
121 wrap_width: Option<Pixels>,
122 show_excerpt_controls: bool,
123 buffer_header_height: u32,
124 excerpt_header_height: u32,
125 excerpt_footer_height: u32,
126 fold_placeholder: FoldPlaceholder,
127 cx: &mut Context<Self>,
128 ) -> Self {
129 let buffer_subscription = buffer.update(cx, |buffer, _| buffer.subscribe());
130
131 let tab_size = Self::tab_size(&buffer, cx);
132 let buffer_snapshot = buffer.read(cx).snapshot(cx);
133 let crease_map = CreaseMap::new(&buffer_snapshot);
134 let (inlay_map, snapshot) = InlayMap::new(buffer_snapshot);
135 let (fold_map, snapshot) = FoldMap::new(snapshot);
136 let (tab_map, snapshot) = TabMap::new(snapshot, tab_size);
137 let (wrap_map, snapshot) = WrapMap::new(snapshot, font, font_size, wrap_width, cx);
138 let block_map = BlockMap::new(
139 snapshot,
140 show_excerpt_controls,
141 buffer_header_height,
142 excerpt_header_height,
143 excerpt_footer_height,
144 );
145
146 cx.observe(&wrap_map, |_, _, cx| cx.notify()).detach();
147
148 DisplayMap {
149 buffer,
150 buffer_subscription,
151 fold_map,
152 inlay_map,
153 tab_map,
154 wrap_map,
155 block_map,
156 crease_map,
157 fold_placeholder,
158 text_highlights: Default::default(),
159 inlay_highlights: Default::default(),
160 clip_at_line_ends: false,
161 masked: false,
162 }
163 }
164
165 pub fn snapshot(&mut self, cx: &mut Context<Self>) -> DisplaySnapshot {
166 let buffer_snapshot = self.buffer.read(cx).snapshot(cx);
167 let edits = self.buffer_subscription.consume().into_inner();
168 let (inlay_snapshot, edits) = self.inlay_map.sync(buffer_snapshot, edits);
169 let (fold_snapshot, edits) = self.fold_map.read(inlay_snapshot.clone(), edits);
170 let tab_size = Self::tab_size(&self.buffer, cx);
171 let (tab_snapshot, edits) = self.tab_map.sync(fold_snapshot.clone(), edits, tab_size);
172 let (wrap_snapshot, edits) = self
173 .wrap_map
174 .update(cx, |map, cx| map.sync(tab_snapshot.clone(), edits, cx));
175 let block_snapshot = self.block_map.read(wrap_snapshot.clone(), edits).snapshot;
176
177 DisplaySnapshot {
178 buffer_snapshot: self.buffer.read(cx).snapshot(cx),
179 fold_snapshot,
180 inlay_snapshot,
181 tab_snapshot,
182 wrap_snapshot,
183 block_snapshot,
184 crease_snapshot: self.crease_map.snapshot(),
185 text_highlights: self.text_highlights.clone(),
186 inlay_highlights: self.inlay_highlights.clone(),
187 clip_at_line_ends: self.clip_at_line_ends,
188 masked: self.masked,
189 fold_placeholder: self.fold_placeholder.clone(),
190 }
191 }
192
193 pub fn set_state(&mut self, other: &DisplaySnapshot, cx: &mut Context<Self>) {
194 self.fold(
195 other
196 .folds_in_range(0..other.buffer_snapshot.len())
197 .map(|fold| {
198 Crease::simple(
199 fold.range.to_offset(&other.buffer_snapshot),
200 fold.placeholder.clone(),
201 )
202 })
203 .collect(),
204 cx,
205 );
206 }
207
208 /// Creates folds for the given creases.
209 pub fn fold<T: Clone + ToOffset>(&mut self, creases: Vec<Crease<T>>, cx: &mut Context<Self>) {
210 let buffer_snapshot = self.buffer.read(cx).snapshot(cx);
211 let edits = self.buffer_subscription.consume().into_inner();
212 let tab_size = Self::tab_size(&self.buffer, cx);
213 let (snapshot, edits) = self.inlay_map.sync(buffer_snapshot.clone(), edits);
214 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
215 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
216 let (snapshot, edits) = self
217 .wrap_map
218 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
219 self.block_map.read(snapshot, edits);
220
221 let inline = creases.iter().filter_map(|crease| {
222 if let Crease::Inline {
223 range, placeholder, ..
224 } = crease
225 {
226 Some((range.clone(), placeholder.clone()))
227 } else {
228 None
229 }
230 });
231 let (snapshot, edits) = fold_map.fold(inline);
232
233 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
234 let (snapshot, edits) = self
235 .wrap_map
236 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
237 let mut block_map = self.block_map.write(snapshot, edits);
238 let blocks = creases.into_iter().filter_map(|crease| {
239 if let Crease::Block {
240 range,
241 block_height,
242 render_block,
243 block_style,
244 block_priority,
245 ..
246 } = crease
247 {
248 Some((
249 range,
250 render_block,
251 block_height,
252 block_style,
253 block_priority,
254 ))
255 } else {
256 None
257 }
258 });
259 block_map.insert(
260 blocks
261 .into_iter()
262 .map(|(range, render, height, style, priority)| {
263 let start = buffer_snapshot.anchor_before(range.start);
264 let end = buffer_snapshot.anchor_after(range.end);
265 BlockProperties {
266 placement: BlockPlacement::Replace(start..=end),
267 render,
268 height,
269 style,
270 priority,
271 }
272 }),
273 );
274 }
275
276 /// Removes any folds with the given ranges.
277 pub fn remove_folds_with_type<T: ToOffset>(
278 &mut self,
279 ranges: impl IntoIterator<Item = Range<T>>,
280 type_id: TypeId,
281 cx: &mut Context<Self>,
282 ) {
283 let snapshot = self.buffer.read(cx).snapshot(cx);
284 let edits = self.buffer_subscription.consume().into_inner();
285 let tab_size = Self::tab_size(&self.buffer, cx);
286 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
287 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
288 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
289 let (snapshot, edits) = self
290 .wrap_map
291 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
292 self.block_map.read(snapshot, edits);
293 let (snapshot, edits) = fold_map.remove_folds(ranges, type_id);
294 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
295 let (snapshot, edits) = self
296 .wrap_map
297 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
298 self.block_map.write(snapshot, edits);
299 }
300
301 /// Removes any folds whose ranges intersect any of the given ranges.
302 pub fn unfold_intersecting<T: ToOffset>(
303 &mut self,
304 ranges: impl IntoIterator<Item = Range<T>>,
305 inclusive: bool,
306 cx: &mut Context<Self>,
307 ) {
308 let snapshot = self.buffer.read(cx).snapshot(cx);
309 let offset_ranges = ranges
310 .into_iter()
311 .map(|range| range.start.to_offset(&snapshot)..range.end.to_offset(&snapshot))
312 .collect::<Vec<_>>();
313 let edits = self.buffer_subscription.consume().into_inner();
314 let tab_size = Self::tab_size(&self.buffer, cx);
315 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
316 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
317 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
318 let (snapshot, edits) = self
319 .wrap_map
320 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
321 self.block_map.read(snapshot, edits);
322
323 let (snapshot, edits) =
324 fold_map.unfold_intersecting(offset_ranges.iter().cloned(), inclusive);
325 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
326 let (snapshot, edits) = self
327 .wrap_map
328 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
329 let mut block_map = self.block_map.write(snapshot, edits);
330 block_map.remove_intersecting_replace_blocks(offset_ranges, inclusive);
331 }
332
333 pub fn fold_buffer(&mut self, buffer_id: language::BufferId, cx: &mut Context<Self>) {
334 let snapshot = self.buffer.read(cx).snapshot(cx);
335 let edits = self.buffer_subscription.consume().into_inner();
336 let tab_size = Self::tab_size(&self.buffer, cx);
337 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
338 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
339 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
340 let (snapshot, edits) = self
341 .wrap_map
342 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
343 let mut block_map = self.block_map.write(snapshot, edits);
344 block_map.fold_buffer(buffer_id, self.buffer.read(cx), cx)
345 }
346
347 pub fn unfold_buffer(&mut self, buffer_id: language::BufferId, cx: &mut Context<Self>) {
348 let snapshot = self.buffer.read(cx).snapshot(cx);
349 let edits = self.buffer_subscription.consume().into_inner();
350 let tab_size = Self::tab_size(&self.buffer, cx);
351 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
352 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
353 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
354 let (snapshot, edits) = self
355 .wrap_map
356 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
357 let mut block_map = self.block_map.write(snapshot, edits);
358 block_map.unfold_buffer(buffer_id, self.buffer.read(cx), cx)
359 }
360
361 pub(crate) fn is_buffer_folded(&self, buffer_id: language::BufferId) -> bool {
362 self.block_map.folded_buffers.contains(&buffer_id)
363 }
364
365 pub(crate) fn folded_buffers(&self) -> &HashSet<BufferId> {
366 &self.block_map.folded_buffers
367 }
368
369 pub fn insert_creases(
370 &mut self,
371 creases: impl IntoIterator<Item = Crease<Anchor>>,
372 cx: &mut Context<Self>,
373 ) -> Vec<CreaseId> {
374 let snapshot = self.buffer.read(cx).snapshot(cx);
375 self.crease_map.insert(creases, &snapshot)
376 }
377
378 pub fn remove_creases(
379 &mut self,
380 crease_ids: impl IntoIterator<Item = CreaseId>,
381 cx: &mut Context<Self>,
382 ) {
383 let snapshot = self.buffer.read(cx).snapshot(cx);
384 self.crease_map.remove(crease_ids, &snapshot)
385 }
386
387 pub fn insert_blocks(
388 &mut self,
389 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
390 cx: &mut Context<Self>,
391 ) -> Vec<CustomBlockId> {
392 let snapshot = self.buffer.read(cx).snapshot(cx);
393 let edits = self.buffer_subscription.consume().into_inner();
394 let tab_size = Self::tab_size(&self.buffer, cx);
395 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
396 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
397 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
398 let (snapshot, edits) = self
399 .wrap_map
400 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
401 let mut block_map = self.block_map.write(snapshot, edits);
402 block_map.insert(blocks)
403 }
404
405 pub fn resize_blocks(&mut self, heights: HashMap<CustomBlockId, u32>, cx: &mut Context<Self>) {
406 let snapshot = self.buffer.read(cx).snapshot(cx);
407 let edits = self.buffer_subscription.consume().into_inner();
408 let tab_size = Self::tab_size(&self.buffer, cx);
409 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
410 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
411 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
412 let (snapshot, edits) = self
413 .wrap_map
414 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
415 let mut block_map = self.block_map.write(snapshot, edits);
416 block_map.resize(heights);
417 }
418
419 pub fn replace_blocks(&mut self, renderers: HashMap<CustomBlockId, RenderBlock>) {
420 self.block_map.replace_blocks(renderers);
421 }
422
423 pub fn remove_blocks(&mut self, ids: HashSet<CustomBlockId>, cx: &mut Context<Self>) {
424 let snapshot = self.buffer.read(cx).snapshot(cx);
425 let edits = self.buffer_subscription.consume().into_inner();
426 let tab_size = Self::tab_size(&self.buffer, cx);
427 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
428 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
429 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
430 let (snapshot, edits) = self
431 .wrap_map
432 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
433 let mut block_map = self.block_map.write(snapshot, edits);
434 block_map.remove(ids);
435 }
436
437 pub fn row_for_block(
438 &mut self,
439 block_id: CustomBlockId,
440 cx: &mut Context<Self>,
441 ) -> Option<DisplayRow> {
442 let snapshot = self.buffer.read(cx).snapshot(cx);
443 let edits = self.buffer_subscription.consume().into_inner();
444 let tab_size = Self::tab_size(&self.buffer, cx);
445 let (snapshot, edits) = self.inlay_map.sync(snapshot, edits);
446 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
447 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
448 let (snapshot, edits) = self
449 .wrap_map
450 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
451 let block_map = self.block_map.read(snapshot, edits);
452 let block_row = block_map.row_for_block(block_id)?;
453 Some(DisplayRow(block_row.0))
454 }
455
456 pub fn highlight_text(
457 &mut self,
458 type_id: TypeId,
459 ranges: Vec<Range<Anchor>>,
460 style: HighlightStyle,
461 ) {
462 self.text_highlights
463 .insert(type_id, Arc::new((style, ranges)));
464 }
465
466 pub(crate) fn highlight_inlays(
467 &mut self,
468 type_id: TypeId,
469 highlights: Vec<InlayHighlight>,
470 style: HighlightStyle,
471 ) {
472 for highlight in highlights {
473 let update = self.inlay_highlights.update(&type_id, |highlights| {
474 highlights.insert(highlight.inlay, (style, highlight.clone()))
475 });
476 if update.is_none() {
477 self.inlay_highlights.insert(
478 type_id,
479 TreeMap::from_ordered_entries([(highlight.inlay, (style, highlight))]),
480 );
481 }
482 }
483 }
484
485 pub fn text_highlights(&self, type_id: TypeId) -> Option<(HighlightStyle, &[Range<Anchor>])> {
486 let highlights = self.text_highlights.get(&type_id)?;
487 Some((highlights.0, &highlights.1))
488 }
489 pub fn clear_highlights(&mut self, type_id: TypeId) -> bool {
490 let mut cleared = self.text_highlights.remove(&type_id).is_some();
491 cleared |= self.inlay_highlights.remove(&type_id).is_some();
492 cleared
493 }
494
495 pub fn set_font(&self, font: Font, font_size: Pixels, cx: &mut Context<Self>) -> bool {
496 self.wrap_map
497 .update(cx, |map, cx| map.set_font_with_size(font, font_size, cx))
498 }
499
500 pub fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut Context<Self>) -> bool {
501 self.wrap_map
502 .update(cx, |map, cx| map.set_wrap_width(width, cx))
503 }
504
505 pub(crate) fn current_inlays(&self) -> impl Iterator<Item = &Inlay> {
506 self.inlay_map.current_inlays()
507 }
508
509 pub(crate) fn splice_inlays(
510 &mut self,
511 to_remove: &[InlayId],
512 to_insert: Vec<Inlay>,
513 cx: &mut Context<Self>,
514 ) {
515 if to_remove.is_empty() && to_insert.is_empty() {
516 return;
517 }
518 let buffer_snapshot = self.buffer.read(cx).snapshot(cx);
519 let edits = self.buffer_subscription.consume().into_inner();
520 let (snapshot, edits) = self.inlay_map.sync(buffer_snapshot, edits);
521 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
522 let tab_size = Self::tab_size(&self.buffer, cx);
523 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
524 let (snapshot, edits) = self
525 .wrap_map
526 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
527 self.block_map.read(snapshot, edits);
528
529 let (snapshot, edits) = self.inlay_map.splice(to_remove, to_insert);
530 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
531 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
532 let (snapshot, edits) = self
533 .wrap_map
534 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
535 self.block_map.read(snapshot, edits);
536 }
537
538 fn tab_size(buffer: &Entity<MultiBuffer>, cx: &App) -> NonZeroU32 {
539 let buffer = buffer.read(cx).as_singleton().map(|buffer| buffer.read(cx));
540 let language = buffer
541 .and_then(|buffer| buffer.language())
542 .map(|l| l.name());
543 let file = buffer.and_then(|buffer| buffer.file());
544 language_settings(language, file, cx).tab_size
545 }
546
547 #[cfg(test)]
548 pub fn is_rewrapping(&self, cx: &gpui::App) -> bool {
549 self.wrap_map.read(cx).is_rewrapping()
550 }
551
552 pub fn show_excerpt_controls(&self) -> bool {
553 self.block_map.show_excerpt_controls()
554 }
555}
556
557#[derive(Debug, Default)]
558pub(crate) struct Highlights<'a> {
559 pub text_highlights: Option<&'a TextHighlights>,
560 pub inlay_highlights: Option<&'a InlayHighlights>,
561 pub styles: HighlightStyles,
562}
563
564#[derive(Clone, Copy, Debug)]
565pub struct InlineCompletionStyles {
566 pub insertion: HighlightStyle,
567 pub whitespace: HighlightStyle,
568}
569
570#[derive(Default, Debug, Clone, Copy)]
571pub struct HighlightStyles {
572 pub inlay_hint: Option<HighlightStyle>,
573 pub inline_completion: Option<InlineCompletionStyles>,
574}
575
576#[derive(Clone)]
577pub enum ChunkReplacement {
578 Renderer(ChunkRenderer),
579 Str(SharedString),
580}
581
582pub struct HighlightedChunk<'a> {
583 pub text: &'a str,
584 pub style: Option<HighlightStyle>,
585 pub is_tab: bool,
586 pub replacement: Option<ChunkReplacement>,
587}
588
589impl<'a> HighlightedChunk<'a> {
590 fn highlight_invisibles(
591 self,
592 editor_style: &'a EditorStyle,
593 ) -> impl Iterator<Item = Self> + 'a {
594 let mut chars = self.text.chars().peekable();
595 let mut text = self.text;
596 let style = self.style;
597 let is_tab = self.is_tab;
598 let renderer = self.replacement;
599 iter::from_fn(move || {
600 let mut prefix_len = 0;
601 while let Some(&ch) = chars.peek() {
602 if !is_invisible(ch) {
603 prefix_len += ch.len_utf8();
604 chars.next();
605 continue;
606 }
607 if prefix_len > 0 {
608 let (prefix, suffix) = text.split_at(prefix_len);
609 text = suffix;
610 return Some(HighlightedChunk {
611 text: prefix,
612 style,
613 is_tab,
614 replacement: renderer.clone(),
615 });
616 }
617 chars.next();
618 let (prefix, suffix) = text.split_at(ch.len_utf8());
619 text = suffix;
620 if let Some(replacement) = replacement(ch) {
621 let invisible_highlight = HighlightStyle {
622 background_color: Some(editor_style.status.hint_background),
623 underline: Some(UnderlineStyle {
624 color: Some(editor_style.status.hint),
625 thickness: px(1.),
626 wavy: false,
627 }),
628 ..Default::default()
629 };
630 let invisible_style = if let Some(mut style) = style {
631 style.highlight(invisible_highlight);
632 style
633 } else {
634 invisible_highlight
635 };
636 return Some(HighlightedChunk {
637 text: prefix,
638 style: Some(invisible_style),
639 is_tab: false,
640 replacement: Some(ChunkReplacement::Str(replacement.into())),
641 });
642 } else {
643 let invisible_highlight = HighlightStyle {
644 background_color: Some(editor_style.status.hint_background),
645 underline: Some(UnderlineStyle {
646 color: Some(editor_style.status.hint),
647 thickness: px(1.),
648 wavy: false,
649 }),
650 ..Default::default()
651 };
652 let invisible_style = if let Some(mut style) = style {
653 style.highlight(invisible_highlight);
654 style
655 } else {
656 invisible_highlight
657 };
658
659 return Some(HighlightedChunk {
660 text: prefix,
661 style: Some(invisible_style),
662 is_tab: false,
663 replacement: renderer.clone(),
664 });
665 }
666 }
667
668 if !text.is_empty() {
669 let remainder = text;
670 text = "";
671 Some(HighlightedChunk {
672 text: remainder,
673 style,
674 is_tab,
675 replacement: renderer.clone(),
676 })
677 } else {
678 None
679 }
680 })
681 }
682}
683
684#[derive(Clone)]
685pub struct DisplaySnapshot {
686 pub buffer_snapshot: MultiBufferSnapshot,
687 pub fold_snapshot: FoldSnapshot,
688 pub crease_snapshot: CreaseSnapshot,
689 inlay_snapshot: InlaySnapshot,
690 tab_snapshot: TabSnapshot,
691 wrap_snapshot: WrapSnapshot,
692 block_snapshot: BlockSnapshot,
693 text_highlights: TextHighlights,
694 inlay_highlights: InlayHighlights,
695 clip_at_line_ends: bool,
696 masked: bool,
697 pub(crate) fold_placeholder: FoldPlaceholder,
698}
699
700impl DisplaySnapshot {
701 #[cfg(test)]
702 pub fn fold_count(&self) -> usize {
703 self.fold_snapshot.fold_count()
704 }
705
706 pub fn is_empty(&self) -> bool {
707 self.buffer_snapshot.len() == 0
708 }
709
710 pub fn row_infos(&self, start_row: DisplayRow) -> impl Iterator<Item = RowInfo> + '_ {
711 self.block_snapshot.row_infos(BlockRow(start_row.0))
712 }
713
714 pub fn widest_line_number(&self) -> u32 {
715 self.buffer_snapshot.widest_line_number()
716 }
717
718 pub fn prev_line_boundary(&self, mut point: MultiBufferPoint) -> (Point, DisplayPoint) {
719 loop {
720 let mut inlay_point = self.inlay_snapshot.to_inlay_point(point);
721 let mut fold_point = self.fold_snapshot.to_fold_point(inlay_point, Bias::Left);
722 fold_point.0.column = 0;
723 inlay_point = fold_point.to_inlay_point(&self.fold_snapshot);
724 point = self.inlay_snapshot.to_buffer_point(inlay_point);
725
726 let mut display_point = self.point_to_display_point(point, Bias::Left);
727 *display_point.column_mut() = 0;
728 let next_point = self.display_point_to_point(display_point, Bias::Left);
729 if next_point == point {
730 return (point, display_point);
731 }
732 point = next_point;
733 }
734 }
735
736 pub fn next_line_boundary(
737 &self,
738 mut point: MultiBufferPoint,
739 ) -> (MultiBufferPoint, DisplayPoint) {
740 let original_point = point;
741 loop {
742 let mut inlay_point = self.inlay_snapshot.to_inlay_point(point);
743 let mut fold_point = self.fold_snapshot.to_fold_point(inlay_point, Bias::Right);
744 fold_point.0.column = self.fold_snapshot.line_len(fold_point.row());
745 inlay_point = fold_point.to_inlay_point(&self.fold_snapshot);
746 point = self.inlay_snapshot.to_buffer_point(inlay_point);
747
748 let mut display_point = self.point_to_display_point(point, Bias::Right);
749 *display_point.column_mut() = self.line_len(display_point.row());
750 let next_point = self.display_point_to_point(display_point, Bias::Right);
751 if next_point == point || original_point == point || original_point == next_point {
752 return (point, display_point);
753 }
754 point = next_point;
755 }
756 }
757
758 // used by line_mode selections and tries to match vim behavior
759 pub fn expand_to_line(&self, range: Range<Point>) -> Range<Point> {
760 let max_row = self.buffer_snapshot.max_row().0;
761 let new_start = if range.start.row == 0 {
762 MultiBufferPoint::new(0, 0)
763 } else if range.start.row == max_row || (range.end.column > 0 && range.end.row == max_row) {
764 MultiBufferPoint::new(
765 range.start.row - 1,
766 self.buffer_snapshot
767 .line_len(MultiBufferRow(range.start.row - 1)),
768 )
769 } else {
770 self.prev_line_boundary(range.start).0
771 };
772
773 let new_end = if range.end.column == 0 {
774 range.end
775 } else if range.end.row < max_row {
776 self.buffer_snapshot
777 .clip_point(MultiBufferPoint::new(range.end.row + 1, 0), Bias::Left)
778 } else {
779 self.buffer_snapshot.max_point()
780 };
781
782 new_start..new_end
783 }
784
785 pub fn point_to_display_point(&self, point: MultiBufferPoint, bias: Bias) -> DisplayPoint {
786 let inlay_point = self.inlay_snapshot.to_inlay_point(point);
787 let fold_point = self.fold_snapshot.to_fold_point(inlay_point, bias);
788 let tab_point = self.tab_snapshot.to_tab_point(fold_point);
789 let wrap_point = self.wrap_snapshot.tab_point_to_wrap_point(tab_point);
790 let block_point = self.block_snapshot.to_block_point(wrap_point);
791 DisplayPoint(block_point)
792 }
793
794 pub fn display_point_to_point(&self, point: DisplayPoint, bias: Bias) -> Point {
795 self.inlay_snapshot
796 .to_buffer_point(self.display_point_to_inlay_point(point, bias))
797 }
798
799 pub fn display_point_to_inlay_offset(&self, point: DisplayPoint, bias: Bias) -> InlayOffset {
800 self.inlay_snapshot
801 .to_offset(self.display_point_to_inlay_point(point, bias))
802 }
803
804 pub fn anchor_to_inlay_offset(&self, anchor: Anchor) -> InlayOffset {
805 self.inlay_snapshot
806 .to_inlay_offset(anchor.to_offset(&self.buffer_snapshot))
807 }
808
809 pub fn display_point_to_anchor(&self, point: DisplayPoint, bias: Bias) -> Anchor {
810 self.buffer_snapshot
811 .anchor_at(point.to_offset(self, bias), bias)
812 }
813
814 fn display_point_to_inlay_point(&self, point: DisplayPoint, bias: Bias) -> InlayPoint {
815 let block_point = point.0;
816 let wrap_point = self.block_snapshot.to_wrap_point(block_point, bias);
817 let tab_point = self.wrap_snapshot.to_tab_point(wrap_point);
818 let fold_point = self.tab_snapshot.to_fold_point(tab_point, bias).0;
819 fold_point.to_inlay_point(&self.fold_snapshot)
820 }
821
822 pub fn display_point_to_fold_point(&self, point: DisplayPoint, bias: Bias) -> FoldPoint {
823 let block_point = point.0;
824 let wrap_point = self.block_snapshot.to_wrap_point(block_point, bias);
825 let tab_point = self.wrap_snapshot.to_tab_point(wrap_point);
826 self.tab_snapshot.to_fold_point(tab_point, bias).0
827 }
828
829 pub fn fold_point_to_display_point(&self, fold_point: FoldPoint) -> DisplayPoint {
830 let tab_point = self.tab_snapshot.to_tab_point(fold_point);
831 let wrap_point = self.wrap_snapshot.tab_point_to_wrap_point(tab_point);
832 let block_point = self.block_snapshot.to_block_point(wrap_point);
833 DisplayPoint(block_point)
834 }
835
836 pub fn max_point(&self) -> DisplayPoint {
837 DisplayPoint(self.block_snapshot.max_point())
838 }
839
840 /// Returns text chunks starting at the given display row until the end of the file
841 pub fn text_chunks(&self, display_row: DisplayRow) -> impl Iterator<Item = &str> {
842 self.block_snapshot
843 .chunks(
844 display_row.0..self.max_point().row().next_row().0,
845 false,
846 self.masked,
847 Highlights::default(),
848 )
849 .map(|h| h.text)
850 }
851
852 /// Returns text chunks starting at the end of the given display row in reverse until the start of the file
853 pub fn reverse_text_chunks(&self, display_row: DisplayRow) -> impl Iterator<Item = &str> {
854 (0..=display_row.0).rev().flat_map(move |row| {
855 self.block_snapshot
856 .chunks(row..row + 1, false, self.masked, Highlights::default())
857 .map(|h| h.text)
858 .collect::<Vec<_>>()
859 .into_iter()
860 .rev()
861 })
862 }
863
864 pub fn chunks(
865 &self,
866 display_rows: Range<DisplayRow>,
867 language_aware: bool,
868 highlight_styles: HighlightStyles,
869 ) -> DisplayChunks<'_> {
870 self.block_snapshot.chunks(
871 display_rows.start.0..display_rows.end.0,
872 language_aware,
873 self.masked,
874 Highlights {
875 text_highlights: Some(&self.text_highlights),
876 inlay_highlights: Some(&self.inlay_highlights),
877 styles: highlight_styles,
878 },
879 )
880 }
881
882 pub fn highlighted_chunks<'a>(
883 &'a self,
884 display_rows: Range<DisplayRow>,
885 language_aware: bool,
886 editor_style: &'a EditorStyle,
887 ) -> impl Iterator<Item = HighlightedChunk<'a>> {
888 self.chunks(
889 display_rows,
890 language_aware,
891 HighlightStyles {
892 inlay_hint: Some(editor_style.inlay_hints_style),
893 inline_completion: Some(editor_style.inline_completion_styles),
894 },
895 )
896 .flat_map(|chunk| {
897 let mut highlight_style = chunk
898 .syntax_highlight_id
899 .and_then(|id| id.style(&editor_style.syntax));
900
901 if let Some(chunk_highlight) = chunk.highlight_style {
902 if let Some(highlight_style) = highlight_style.as_mut() {
903 highlight_style.highlight(chunk_highlight);
904 } else {
905 highlight_style = Some(chunk_highlight);
906 }
907 }
908
909 let mut diagnostic_highlight = HighlightStyle::default();
910
911 if chunk.is_unnecessary {
912 diagnostic_highlight.fade_out = Some(editor_style.unnecessary_code_fade);
913 }
914
915 if let Some(severity) = chunk.diagnostic_severity {
916 // Omit underlines for HINT/INFO diagnostics on 'unnecessary' code.
917 if severity <= DiagnosticSeverity::WARNING || !chunk.is_unnecessary {
918 let diagnostic_color = super::diagnostic_style(severity, &editor_style.status);
919 diagnostic_highlight.underline = Some(UnderlineStyle {
920 color: Some(diagnostic_color),
921 thickness: 1.0.into(),
922 wavy: true,
923 });
924 }
925 }
926
927 if let Some(highlight_style) = highlight_style.as_mut() {
928 highlight_style.highlight(diagnostic_highlight);
929 } else {
930 highlight_style = Some(diagnostic_highlight);
931 }
932
933 HighlightedChunk {
934 text: chunk.text,
935 style: highlight_style,
936 is_tab: chunk.is_tab,
937 replacement: chunk.renderer.map(ChunkReplacement::Renderer),
938 }
939 .highlight_invisibles(editor_style)
940 })
941 }
942
943 pub fn layout_row(
944 &self,
945 display_row: DisplayRow,
946 TextLayoutDetails {
947 text_system,
948 editor_style,
949 rem_size,
950 scroll_anchor: _,
951 visible_rows: _,
952 vertical_scroll_margin: _,
953 }: &TextLayoutDetails,
954 ) -> Arc<LineLayout> {
955 let mut runs = Vec::new();
956 let mut line = String::new();
957
958 let range = display_row..display_row.next_row();
959 for chunk in self.highlighted_chunks(range, false, editor_style) {
960 line.push_str(chunk.text);
961
962 let text_style = if let Some(style) = chunk.style {
963 Cow::Owned(editor_style.text.clone().highlight(style))
964 } else {
965 Cow::Borrowed(&editor_style.text)
966 };
967
968 runs.push(text_style.to_run(chunk.text.len()))
969 }
970
971 if line.ends_with('\n') {
972 line.pop();
973 if let Some(last_run) = runs.last_mut() {
974 last_run.len -= 1;
975 if last_run.len == 0 {
976 runs.pop();
977 }
978 }
979 }
980
981 let font_size = editor_style.text.font_size.to_pixels(*rem_size);
982 text_system
983 .layout_line(&line, font_size, &runs)
984 .expect("we expect the font to be loaded because it's rendered by the editor")
985 }
986
987 pub fn x_for_display_point(
988 &self,
989 display_point: DisplayPoint,
990 text_layout_details: &TextLayoutDetails,
991 ) -> Pixels {
992 let line = self.layout_row(display_point.row(), text_layout_details);
993 line.x_for_index(display_point.column() as usize)
994 }
995
996 pub fn display_column_for_x(
997 &self,
998 display_row: DisplayRow,
999 x: Pixels,
1000 details: &TextLayoutDetails,
1001 ) -> u32 {
1002 let layout_line = self.layout_row(display_row, details);
1003 layout_line.closest_index_for_x(x) as u32
1004 }
1005
1006 pub fn grapheme_at(&self, mut point: DisplayPoint) -> Option<SharedString> {
1007 point = DisplayPoint(self.block_snapshot.clip_point(point.0, Bias::Left));
1008 let chars = self
1009 .text_chunks(point.row())
1010 .flat_map(str::chars)
1011 .skip_while({
1012 let mut column = 0;
1013 move |char| {
1014 let at_point = column >= point.column();
1015 column += char.len_utf8() as u32;
1016 !at_point
1017 }
1018 })
1019 .take_while({
1020 let mut prev = false;
1021 move |char| {
1022 let now = char.is_ascii();
1023 let end = char.is_ascii() && (char.is_ascii_whitespace() || prev);
1024 prev = now;
1025 !end
1026 }
1027 });
1028 chars.collect::<String>().graphemes(true).next().map(|s| {
1029 if let Some(invisible) = s.chars().next().filter(|&c| is_invisible(c)) {
1030 replacement(invisible).unwrap_or(s).to_owned().into()
1031 } else if s == "\n" {
1032 " ".into()
1033 } else {
1034 s.to_owned().into()
1035 }
1036 })
1037 }
1038
1039 pub fn buffer_chars_at(&self, mut offset: usize) -> impl Iterator<Item = (char, usize)> + '_ {
1040 self.buffer_snapshot.chars_at(offset).map(move |ch| {
1041 let ret = (ch, offset);
1042 offset += ch.len_utf8();
1043 ret
1044 })
1045 }
1046
1047 pub fn reverse_buffer_chars_at(
1048 &self,
1049 mut offset: usize,
1050 ) -> impl Iterator<Item = (char, usize)> + '_ {
1051 self.buffer_snapshot
1052 .reversed_chars_at(offset)
1053 .map(move |ch| {
1054 offset -= ch.len_utf8();
1055 (ch, offset)
1056 })
1057 }
1058
1059 pub fn clip_point(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
1060 let mut clipped = self.block_snapshot.clip_point(point.0, bias);
1061 if self.clip_at_line_ends {
1062 clipped = self.clip_at_line_end(DisplayPoint(clipped)).0
1063 }
1064 DisplayPoint(clipped)
1065 }
1066
1067 pub fn clip_ignoring_line_ends(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
1068 DisplayPoint(self.block_snapshot.clip_point(point.0, bias))
1069 }
1070
1071 pub fn clip_at_line_end(&self, display_point: DisplayPoint) -> DisplayPoint {
1072 let mut point = self.display_point_to_point(display_point, Bias::Left);
1073
1074 if point.column != self.buffer_snapshot.line_len(MultiBufferRow(point.row)) {
1075 return display_point;
1076 }
1077 point.column = point.column.saturating_sub(1);
1078 point = self.buffer_snapshot.clip_point(point, Bias::Left);
1079 self.point_to_display_point(point, Bias::Left)
1080 }
1081
1082 pub fn folds_in_range<T>(&self, range: Range<T>) -> impl Iterator<Item = &Fold>
1083 where
1084 T: ToOffset,
1085 {
1086 self.fold_snapshot.folds_in_range(range)
1087 }
1088
1089 pub fn blocks_in_range(
1090 &self,
1091 rows: Range<DisplayRow>,
1092 ) -> impl Iterator<Item = (DisplayRow, &Block)> {
1093 self.block_snapshot
1094 .blocks_in_range(rows.start.0..rows.end.0)
1095 .map(|(row, block)| (DisplayRow(row), block))
1096 }
1097
1098 pub fn sticky_header_excerpt(&self, row: DisplayRow) -> Option<StickyHeaderExcerpt<'_>> {
1099 self.block_snapshot.sticky_header_excerpt(row.0)
1100 }
1101
1102 pub fn block_for_id(&self, id: BlockId) -> Option<Block> {
1103 self.block_snapshot.block_for_id(id)
1104 }
1105
1106 pub fn intersects_fold<T: ToOffset>(&self, offset: T) -> bool {
1107 self.fold_snapshot.intersects_fold(offset)
1108 }
1109
1110 pub fn is_line_folded(&self, buffer_row: MultiBufferRow) -> bool {
1111 self.block_snapshot.is_line_replaced(buffer_row)
1112 || self.fold_snapshot.is_line_folded(buffer_row)
1113 }
1114
1115 pub fn is_block_line(&self, display_row: DisplayRow) -> bool {
1116 self.block_snapshot.is_block_line(BlockRow(display_row.0))
1117 }
1118
1119 pub fn soft_wrap_indent(&self, display_row: DisplayRow) -> Option<u32> {
1120 let wrap_row = self
1121 .block_snapshot
1122 .to_wrap_point(BlockPoint::new(display_row.0, 0), Bias::Left)
1123 .row();
1124 self.wrap_snapshot.soft_wrap_indent(wrap_row)
1125 }
1126
1127 pub fn text(&self) -> String {
1128 self.text_chunks(DisplayRow(0)).collect()
1129 }
1130
1131 pub fn line(&self, display_row: DisplayRow) -> String {
1132 let mut result = String::new();
1133 for chunk in self.text_chunks(display_row) {
1134 if let Some(ix) = chunk.find('\n') {
1135 result.push_str(&chunk[0..ix]);
1136 break;
1137 } else {
1138 result.push_str(chunk);
1139 }
1140 }
1141 result
1142 }
1143
1144 pub fn line_indent_for_buffer_row(&self, buffer_row: MultiBufferRow) -> LineIndent {
1145 self.buffer_snapshot.line_indent_for_row(buffer_row)
1146 }
1147
1148 pub fn line_len(&self, row: DisplayRow) -> u32 {
1149 self.block_snapshot.line_len(BlockRow(row.0))
1150 }
1151
1152 pub fn longest_row(&self) -> DisplayRow {
1153 DisplayRow(self.block_snapshot.longest_row())
1154 }
1155
1156 pub fn longest_row_in_range(&self, range: Range<DisplayRow>) -> DisplayRow {
1157 let block_range = BlockRow(range.start.0)..BlockRow(range.end.0);
1158 let longest_row = self.block_snapshot.longest_row_in_range(block_range);
1159 DisplayRow(longest_row.0)
1160 }
1161
1162 pub fn starts_indent(&self, buffer_row: MultiBufferRow) -> bool {
1163 let max_row = self.buffer_snapshot.max_row();
1164 if buffer_row >= max_row {
1165 return false;
1166 }
1167
1168 let line_indent = self.line_indent_for_buffer_row(buffer_row);
1169 if line_indent.is_line_blank() {
1170 return false;
1171 }
1172
1173 (buffer_row.0 + 1..=max_row.0)
1174 .find_map(|next_row| {
1175 let next_line_indent = self.line_indent_for_buffer_row(MultiBufferRow(next_row));
1176 if next_line_indent.raw_len() > line_indent.raw_len() {
1177 Some(true)
1178 } else if !next_line_indent.is_line_blank() {
1179 Some(false)
1180 } else {
1181 None
1182 }
1183 })
1184 .unwrap_or(false)
1185 }
1186
1187 pub fn crease_for_buffer_row(&self, buffer_row: MultiBufferRow) -> Option<Crease<Point>> {
1188 let start = MultiBufferPoint::new(buffer_row.0, self.buffer_snapshot.line_len(buffer_row));
1189 if let Some(crease) = self
1190 .crease_snapshot
1191 .query_row(buffer_row, &self.buffer_snapshot)
1192 {
1193 match crease {
1194 Crease::Inline {
1195 range,
1196 placeholder,
1197 render_toggle,
1198 render_trailer,
1199 metadata,
1200 } => Some(Crease::Inline {
1201 range: range.to_point(&self.buffer_snapshot),
1202 placeholder: placeholder.clone(),
1203 render_toggle: render_toggle.clone(),
1204 render_trailer: render_trailer.clone(),
1205 metadata: metadata.clone(),
1206 }),
1207 Crease::Block {
1208 range,
1209 block_height,
1210 block_style,
1211 render_block,
1212 block_priority,
1213 render_toggle,
1214 } => Some(Crease::Block {
1215 range: range.to_point(&self.buffer_snapshot),
1216 block_height: *block_height,
1217 block_style: *block_style,
1218 render_block: render_block.clone(),
1219 block_priority: *block_priority,
1220 render_toggle: render_toggle.clone(),
1221 }),
1222 }
1223 } else if self.starts_indent(MultiBufferRow(start.row))
1224 && !self.is_line_folded(MultiBufferRow(start.row))
1225 {
1226 let start_line_indent = self.line_indent_for_buffer_row(buffer_row);
1227 let max_point = self.buffer_snapshot.max_point();
1228 let mut end = None;
1229
1230 for row in (buffer_row.0 + 1)..=max_point.row {
1231 let line_indent = self.line_indent_for_buffer_row(MultiBufferRow(row));
1232 if !line_indent.is_line_blank()
1233 && line_indent.raw_len() <= start_line_indent.raw_len()
1234 {
1235 let prev_row = row - 1;
1236 end = Some(Point::new(
1237 prev_row,
1238 self.buffer_snapshot.line_len(MultiBufferRow(prev_row)),
1239 ));
1240 break;
1241 }
1242 }
1243
1244 let mut row_before_line_breaks = end.unwrap_or(max_point);
1245 while row_before_line_breaks.row > start.row
1246 && self
1247 .buffer_snapshot
1248 .is_line_blank(MultiBufferRow(row_before_line_breaks.row))
1249 {
1250 row_before_line_breaks.row -= 1;
1251 }
1252
1253 row_before_line_breaks = Point::new(
1254 row_before_line_breaks.row,
1255 self.buffer_snapshot
1256 .line_len(MultiBufferRow(row_before_line_breaks.row)),
1257 );
1258
1259 Some(Crease::Inline {
1260 range: start..row_before_line_breaks,
1261 placeholder: self.fold_placeholder.clone(),
1262 render_toggle: None,
1263 render_trailer: None,
1264 metadata: None,
1265 })
1266 } else {
1267 None
1268 }
1269 }
1270
1271 #[cfg(any(test, feature = "test-support"))]
1272 pub fn text_highlight_ranges<Tag: ?Sized + 'static>(
1273 &self,
1274 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
1275 let type_id = TypeId::of::<Tag>();
1276 self.text_highlights.get(&type_id).cloned()
1277 }
1278
1279 #[allow(unused)]
1280 #[cfg(any(test, feature = "test-support"))]
1281 pub(crate) fn inlay_highlights<Tag: ?Sized + 'static>(
1282 &self,
1283 ) -> Option<&TreeMap<InlayId, (HighlightStyle, InlayHighlight)>> {
1284 let type_id = TypeId::of::<Tag>();
1285 self.inlay_highlights.get(&type_id)
1286 }
1287
1288 pub fn buffer_header_height(&self) -> u32 {
1289 self.block_snapshot.buffer_header_height
1290 }
1291
1292 pub fn excerpt_footer_height(&self) -> u32 {
1293 self.block_snapshot.excerpt_footer_height
1294 }
1295
1296 pub fn excerpt_header_height(&self) -> u32 {
1297 self.block_snapshot.excerpt_header_height
1298 }
1299}
1300
1301#[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq)]
1302pub struct DisplayPoint(BlockPoint);
1303
1304impl Debug for DisplayPoint {
1305 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
1306 f.write_fmt(format_args!(
1307 "DisplayPoint({}, {})",
1308 self.row().0,
1309 self.column()
1310 ))
1311 }
1312}
1313
1314impl Add for DisplayPoint {
1315 type Output = Self;
1316
1317 fn add(self, other: Self) -> Self::Output {
1318 DisplayPoint(BlockPoint(self.0 .0 + other.0 .0))
1319 }
1320}
1321
1322impl Sub for DisplayPoint {
1323 type Output = Self;
1324
1325 fn sub(self, other: Self) -> Self::Output {
1326 DisplayPoint(BlockPoint(self.0 .0 - other.0 .0))
1327 }
1328}
1329
1330#[derive(Debug, Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq, Deserialize, Hash)]
1331#[serde(transparent)]
1332pub struct DisplayRow(pub u32);
1333
1334impl Add<DisplayRow> for DisplayRow {
1335 type Output = Self;
1336
1337 fn add(self, other: Self) -> Self::Output {
1338 DisplayRow(self.0 + other.0)
1339 }
1340}
1341
1342impl Add<u32> for DisplayRow {
1343 type Output = Self;
1344
1345 fn add(self, other: u32) -> Self::Output {
1346 DisplayRow(self.0 + other)
1347 }
1348}
1349
1350impl Sub<DisplayRow> for DisplayRow {
1351 type Output = Self;
1352
1353 fn sub(self, other: Self) -> Self::Output {
1354 DisplayRow(self.0 - other.0)
1355 }
1356}
1357
1358impl Sub<u32> for DisplayRow {
1359 type Output = Self;
1360
1361 fn sub(self, other: u32) -> Self::Output {
1362 DisplayRow(self.0 - other)
1363 }
1364}
1365
1366impl DisplayPoint {
1367 pub fn new(row: DisplayRow, column: u32) -> Self {
1368 Self(BlockPoint(Point::new(row.0, column)))
1369 }
1370
1371 pub fn zero() -> Self {
1372 Self::new(DisplayRow(0), 0)
1373 }
1374
1375 pub fn is_zero(&self) -> bool {
1376 self.0.is_zero()
1377 }
1378
1379 pub fn row(self) -> DisplayRow {
1380 DisplayRow(self.0.row)
1381 }
1382
1383 pub fn column(self) -> u32 {
1384 self.0.column
1385 }
1386
1387 pub fn row_mut(&mut self) -> &mut u32 {
1388 &mut self.0.row
1389 }
1390
1391 pub fn column_mut(&mut self) -> &mut u32 {
1392 &mut self.0.column
1393 }
1394
1395 pub fn to_point(self, map: &DisplaySnapshot) -> Point {
1396 map.display_point_to_point(self, Bias::Left)
1397 }
1398
1399 pub fn to_offset(self, map: &DisplaySnapshot, bias: Bias) -> usize {
1400 let wrap_point = map.block_snapshot.to_wrap_point(self.0, bias);
1401 let tab_point = map.wrap_snapshot.to_tab_point(wrap_point);
1402 let fold_point = map.tab_snapshot.to_fold_point(tab_point, bias).0;
1403 let inlay_point = fold_point.to_inlay_point(&map.fold_snapshot);
1404 map.inlay_snapshot
1405 .to_buffer_offset(map.inlay_snapshot.to_offset(inlay_point))
1406 }
1407}
1408
1409impl ToDisplayPoint for usize {
1410 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
1411 map.point_to_display_point(self.to_point(&map.buffer_snapshot), Bias::Left)
1412 }
1413}
1414
1415impl ToDisplayPoint for OffsetUtf16 {
1416 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
1417 self.to_offset(&map.buffer_snapshot).to_display_point(map)
1418 }
1419}
1420
1421impl ToDisplayPoint for Point {
1422 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
1423 map.point_to_display_point(*self, Bias::Left)
1424 }
1425}
1426
1427impl ToDisplayPoint for Anchor {
1428 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
1429 self.to_point(&map.buffer_snapshot).to_display_point(map)
1430 }
1431}
1432
1433#[cfg(test)]
1434pub mod tests {
1435 use super::*;
1436 use crate::{movement, test::marked_display_snapshot};
1437 use block_map::BlockPlacement;
1438 use gpui::{
1439 div, font, observe, px, App, AppContext as _, BorrowAppContext, Element, Hsla, Rgba,
1440 };
1441 use language::{
1442 language_settings::{AllLanguageSettings, AllLanguageSettingsContent},
1443 Buffer, Diagnostic, DiagnosticEntry, DiagnosticSet, Language, LanguageConfig,
1444 LanguageMatcher,
1445 };
1446 use lsp::LanguageServerId;
1447 use project::Project;
1448 use rand::{prelude::*, Rng};
1449 use settings::SettingsStore;
1450 use smol::stream::StreamExt;
1451 use std::{env, sync::Arc};
1452 use text::PointUtf16;
1453 use theme::{LoadThemes, SyntaxTheme};
1454 use unindent::Unindent as _;
1455 use util::test::{marked_text_ranges, sample_text};
1456 use Bias::*;
1457
1458 #[gpui::test(iterations = 100)]
1459 async fn test_random_display_map(cx: &mut gpui::TestAppContext, mut rng: StdRng) {
1460 cx.background_executor.set_block_on_ticks(0..=50);
1461 let operations = env::var("OPERATIONS")
1462 .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
1463 .unwrap_or(10);
1464
1465 let mut tab_size = rng.gen_range(1..=4);
1466 let buffer_start_excerpt_header_height = rng.gen_range(1..=5);
1467 let excerpt_header_height = rng.gen_range(1..=5);
1468 let font_size = px(14.0);
1469 let max_wrap_width = 300.0;
1470 let mut wrap_width = if rng.gen_bool(0.1) {
1471 None
1472 } else {
1473 Some(px(rng.gen_range(0.0..=max_wrap_width)))
1474 };
1475
1476 log::info!("tab size: {}", tab_size);
1477 log::info!("wrap width: {:?}", wrap_width);
1478
1479 cx.update(|cx| {
1480 init_test(cx, |s| s.defaults.tab_size = NonZeroU32::new(tab_size));
1481 });
1482
1483 let buffer = cx.update(|cx| {
1484 if rng.gen() {
1485 let len = rng.gen_range(0..10);
1486 let text = util::RandomCharIter::new(&mut rng)
1487 .take(len)
1488 .collect::<String>();
1489 MultiBuffer::build_simple(&text, cx)
1490 } else {
1491 MultiBuffer::build_random(&mut rng, cx)
1492 }
1493 });
1494
1495 let map = cx.new(|cx| {
1496 DisplayMap::new(
1497 buffer.clone(),
1498 font("Helvetica"),
1499 font_size,
1500 wrap_width,
1501 true,
1502 buffer_start_excerpt_header_height,
1503 excerpt_header_height,
1504 0,
1505 FoldPlaceholder::test(),
1506 cx,
1507 )
1508 });
1509 let mut notifications = observe(&map, cx);
1510 let mut fold_count = 0;
1511 let mut blocks = Vec::new();
1512
1513 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1514 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
1515 log::info!("fold text: {:?}", snapshot.fold_snapshot.text());
1516 log::info!("tab text: {:?}", snapshot.tab_snapshot.text());
1517 log::info!("wrap text: {:?}", snapshot.wrap_snapshot.text());
1518 log::info!("block text: {:?}", snapshot.block_snapshot.text());
1519 log::info!("display text: {:?}", snapshot.text());
1520
1521 for _i in 0..operations {
1522 match rng.gen_range(0..100) {
1523 0..=19 => {
1524 wrap_width = if rng.gen_bool(0.2) {
1525 None
1526 } else {
1527 Some(px(rng.gen_range(0.0..=max_wrap_width)))
1528 };
1529 log::info!("setting wrap width to {:?}", wrap_width);
1530 map.update(cx, |map, cx| map.set_wrap_width(wrap_width, cx));
1531 }
1532 20..=29 => {
1533 let mut tab_sizes = vec![1, 2, 3, 4];
1534 tab_sizes.remove((tab_size - 1) as usize);
1535 tab_size = *tab_sizes.choose(&mut rng).unwrap();
1536 log::info!("setting tab size to {:?}", tab_size);
1537 cx.update(|cx| {
1538 cx.update_global::<SettingsStore, _>(|store, cx| {
1539 store.update_user_settings::<AllLanguageSettings>(cx, |s| {
1540 s.defaults.tab_size = NonZeroU32::new(tab_size);
1541 });
1542 });
1543 });
1544 }
1545 30..=44 => {
1546 map.update(cx, |map, cx| {
1547 if rng.gen() || blocks.is_empty() {
1548 let buffer = map.snapshot(cx).buffer_snapshot;
1549 let block_properties = (0..rng.gen_range(1..=1))
1550 .map(|_| {
1551 let position =
1552 buffer.anchor_after(buffer.clip_offset(
1553 rng.gen_range(0..=buffer.len()),
1554 Bias::Left,
1555 ));
1556
1557 let placement = if rng.gen() {
1558 BlockPlacement::Above(position)
1559 } else {
1560 BlockPlacement::Below(position)
1561 };
1562 let height = rng.gen_range(1..5);
1563 log::info!(
1564 "inserting block {:?} with height {}",
1565 placement.as_ref().map(|p| p.to_point(&buffer)),
1566 height
1567 );
1568 let priority = rng.gen_range(1..100);
1569 BlockProperties {
1570 placement,
1571 style: BlockStyle::Fixed,
1572 height,
1573 render: Arc::new(|_| div().into_any()),
1574 priority,
1575 }
1576 })
1577 .collect::<Vec<_>>();
1578 blocks.extend(map.insert_blocks(block_properties, cx));
1579 } else {
1580 blocks.shuffle(&mut rng);
1581 let remove_count = rng.gen_range(1..=4.min(blocks.len()));
1582 let block_ids_to_remove = (0..remove_count)
1583 .map(|_| blocks.remove(rng.gen_range(0..blocks.len())))
1584 .collect();
1585 log::info!("removing block ids {:?}", block_ids_to_remove);
1586 map.remove_blocks(block_ids_to_remove, cx);
1587 }
1588 });
1589 }
1590 45..=79 => {
1591 let mut ranges = Vec::new();
1592 for _ in 0..rng.gen_range(1..=3) {
1593 buffer.read_with(cx, |buffer, cx| {
1594 let buffer = buffer.read(cx);
1595 let end = buffer.clip_offset(rng.gen_range(0..=buffer.len()), Right);
1596 let start = buffer.clip_offset(rng.gen_range(0..=end), Left);
1597 ranges.push(start..end);
1598 });
1599 }
1600
1601 if rng.gen() && fold_count > 0 {
1602 log::info!("unfolding ranges: {:?}", ranges);
1603 map.update(cx, |map, cx| {
1604 map.unfold_intersecting(ranges, true, cx);
1605 });
1606 } else {
1607 log::info!("folding ranges: {:?}", ranges);
1608 map.update(cx, |map, cx| {
1609 map.fold(
1610 ranges
1611 .into_iter()
1612 .map(|range| Crease::simple(range, FoldPlaceholder::test()))
1613 .collect(),
1614 cx,
1615 );
1616 });
1617 }
1618 }
1619 _ => {
1620 buffer.update(cx, |buffer, cx| buffer.randomly_mutate(&mut rng, 5, cx));
1621 }
1622 }
1623
1624 if map.read_with(cx, |map, cx| map.is_rewrapping(cx)) {
1625 notifications.next().await.unwrap();
1626 }
1627
1628 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1629 fold_count = snapshot.fold_count();
1630 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
1631 log::info!("fold text: {:?}", snapshot.fold_snapshot.text());
1632 log::info!("tab text: {:?}", snapshot.tab_snapshot.text());
1633 log::info!("wrap text: {:?}", snapshot.wrap_snapshot.text());
1634 log::info!("block text: {:?}", snapshot.block_snapshot.text());
1635 log::info!("display text: {:?}", snapshot.text());
1636
1637 // Line boundaries
1638 let buffer = &snapshot.buffer_snapshot;
1639 for _ in 0..5 {
1640 let row = rng.gen_range(0..=buffer.max_point().row);
1641 let column = rng.gen_range(0..=buffer.line_len(MultiBufferRow(row)));
1642 let point = buffer.clip_point(Point::new(row, column), Left);
1643
1644 let (prev_buffer_bound, prev_display_bound) = snapshot.prev_line_boundary(point);
1645 let (next_buffer_bound, next_display_bound) = snapshot.next_line_boundary(point);
1646
1647 assert!(prev_buffer_bound <= point);
1648 assert!(next_buffer_bound >= point);
1649 assert_eq!(prev_buffer_bound.column, 0);
1650 assert_eq!(prev_display_bound.column(), 0);
1651 if next_buffer_bound < buffer.max_point() {
1652 assert_eq!(buffer.chars_at(next_buffer_bound).next(), Some('\n'));
1653 }
1654
1655 assert_eq!(
1656 prev_display_bound,
1657 prev_buffer_bound.to_display_point(&snapshot),
1658 "row boundary before {:?}. reported buffer row boundary: {:?}",
1659 point,
1660 prev_buffer_bound
1661 );
1662 assert_eq!(
1663 next_display_bound,
1664 next_buffer_bound.to_display_point(&snapshot),
1665 "display row boundary after {:?}. reported buffer row boundary: {:?}",
1666 point,
1667 next_buffer_bound
1668 );
1669 assert_eq!(
1670 prev_buffer_bound,
1671 prev_display_bound.to_point(&snapshot),
1672 "row boundary before {:?}. reported display row boundary: {:?}",
1673 point,
1674 prev_display_bound
1675 );
1676 assert_eq!(
1677 next_buffer_bound,
1678 next_display_bound.to_point(&snapshot),
1679 "row boundary after {:?}. reported display row boundary: {:?}",
1680 point,
1681 next_display_bound
1682 );
1683 }
1684
1685 // Movement
1686 let min_point = snapshot.clip_point(DisplayPoint::new(DisplayRow(0), 0), Left);
1687 let max_point = snapshot.clip_point(snapshot.max_point(), Right);
1688 for _ in 0..5 {
1689 let row = rng.gen_range(0..=snapshot.max_point().row().0);
1690 let column = rng.gen_range(0..=snapshot.line_len(DisplayRow(row)));
1691 let point = snapshot.clip_point(DisplayPoint::new(DisplayRow(row), column), Left);
1692
1693 log::info!("Moving from point {:?}", point);
1694
1695 let moved_right = movement::right(&snapshot, point);
1696 log::info!("Right {:?}", moved_right);
1697 if point < max_point {
1698 assert!(moved_right > point);
1699 if point.column() == snapshot.line_len(point.row())
1700 || snapshot.soft_wrap_indent(point.row()).is_some()
1701 && point.column() == snapshot.line_len(point.row()) - 1
1702 {
1703 assert!(moved_right.row() > point.row());
1704 }
1705 } else {
1706 assert_eq!(moved_right, point);
1707 }
1708
1709 let moved_left = movement::left(&snapshot, point);
1710 log::info!("Left {:?}", moved_left);
1711 if point > min_point {
1712 assert!(moved_left < point);
1713 if point.column() == 0 {
1714 assert!(moved_left.row() < point.row());
1715 }
1716 } else {
1717 assert_eq!(moved_left, point);
1718 }
1719 }
1720 }
1721 }
1722
1723 #[cfg(target_os = "macos")]
1724 #[gpui::test(retries = 5)]
1725 async fn test_soft_wraps(cx: &mut gpui::TestAppContext) {
1726 cx.background_executor
1727 .set_block_on_ticks(usize::MAX..=usize::MAX);
1728 cx.update(|cx| {
1729 init_test(cx, |_| {});
1730 });
1731
1732 let mut cx = crate::test::editor_test_context::EditorTestContext::new(cx).await;
1733 let editor = cx.editor.clone();
1734 let window = cx.window;
1735
1736 _ = cx.update_window(window, |_, window, cx| {
1737 let text_layout_details =
1738 editor.update(cx, |editor, _cx| editor.text_layout_details(window));
1739
1740 let font_size = px(12.0);
1741 let wrap_width = Some(px(64.));
1742
1743 let text = "one two three four five\nsix seven eight";
1744 let buffer = MultiBuffer::build_simple(text, cx);
1745 let map = cx.new(|cx| {
1746 DisplayMap::new(
1747 buffer.clone(),
1748 font("Helvetica"),
1749 font_size,
1750 wrap_width,
1751 true,
1752 1,
1753 1,
1754 0,
1755 FoldPlaceholder::test(),
1756 cx,
1757 )
1758 });
1759
1760 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1761 assert_eq!(
1762 snapshot.text_chunks(DisplayRow(0)).collect::<String>(),
1763 "one two \nthree four \nfive\nsix seven \neight"
1764 );
1765 assert_eq!(
1766 snapshot.clip_point(DisplayPoint::new(DisplayRow(0), 8), Bias::Left),
1767 DisplayPoint::new(DisplayRow(0), 7)
1768 );
1769 assert_eq!(
1770 snapshot.clip_point(DisplayPoint::new(DisplayRow(0), 8), Bias::Right),
1771 DisplayPoint::new(DisplayRow(1), 0)
1772 );
1773 assert_eq!(
1774 movement::right(&snapshot, DisplayPoint::new(DisplayRow(0), 7)),
1775 DisplayPoint::new(DisplayRow(1), 0)
1776 );
1777 assert_eq!(
1778 movement::left(&snapshot, DisplayPoint::new(DisplayRow(1), 0)),
1779 DisplayPoint::new(DisplayRow(0), 7)
1780 );
1781
1782 let x = snapshot
1783 .x_for_display_point(DisplayPoint::new(DisplayRow(1), 10), &text_layout_details);
1784 assert_eq!(
1785 movement::up(
1786 &snapshot,
1787 DisplayPoint::new(DisplayRow(1), 10),
1788 language::SelectionGoal::None,
1789 false,
1790 &text_layout_details,
1791 ),
1792 (
1793 DisplayPoint::new(DisplayRow(0), 7),
1794 language::SelectionGoal::HorizontalPosition(x.0)
1795 )
1796 );
1797 assert_eq!(
1798 movement::down(
1799 &snapshot,
1800 DisplayPoint::new(DisplayRow(0), 7),
1801 language::SelectionGoal::HorizontalPosition(x.0),
1802 false,
1803 &text_layout_details
1804 ),
1805 (
1806 DisplayPoint::new(DisplayRow(1), 10),
1807 language::SelectionGoal::HorizontalPosition(x.0)
1808 )
1809 );
1810 assert_eq!(
1811 movement::down(
1812 &snapshot,
1813 DisplayPoint::new(DisplayRow(1), 10),
1814 language::SelectionGoal::HorizontalPosition(x.0),
1815 false,
1816 &text_layout_details
1817 ),
1818 (
1819 DisplayPoint::new(DisplayRow(2), 4),
1820 language::SelectionGoal::HorizontalPosition(x.0)
1821 )
1822 );
1823
1824 let ix = snapshot.buffer_snapshot.text().find("seven").unwrap();
1825 buffer.update(cx, |buffer, cx| {
1826 buffer.edit([(ix..ix, "and ")], None, cx);
1827 });
1828
1829 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1830 assert_eq!(
1831 snapshot.text_chunks(DisplayRow(1)).collect::<String>(),
1832 "three four \nfive\nsix and \nseven eight"
1833 );
1834
1835 // Re-wrap on font size changes
1836 map.update(cx, |map, cx| {
1837 map.set_font(font("Helvetica"), px(font_size.0 + 3.), cx)
1838 });
1839
1840 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1841 assert_eq!(
1842 snapshot.text_chunks(DisplayRow(1)).collect::<String>(),
1843 "three \nfour five\nsix and \nseven \neight"
1844 )
1845 });
1846 }
1847
1848 #[gpui::test]
1849 fn test_text_chunks(cx: &mut gpui::App) {
1850 init_test(cx, |_| {});
1851
1852 let text = sample_text(6, 6, 'a');
1853 let buffer = MultiBuffer::build_simple(&text, cx);
1854
1855 let font_size = px(14.0);
1856 let map = cx.new(|cx| {
1857 DisplayMap::new(
1858 buffer.clone(),
1859 font("Helvetica"),
1860 font_size,
1861 None,
1862 true,
1863 1,
1864 1,
1865 0,
1866 FoldPlaceholder::test(),
1867 cx,
1868 )
1869 });
1870
1871 buffer.update(cx, |buffer, cx| {
1872 buffer.edit(
1873 vec![
1874 (
1875 MultiBufferPoint::new(1, 0)..MultiBufferPoint::new(1, 0),
1876 "\t",
1877 ),
1878 (
1879 MultiBufferPoint::new(1, 1)..MultiBufferPoint::new(1, 1),
1880 "\t",
1881 ),
1882 (
1883 MultiBufferPoint::new(2, 1)..MultiBufferPoint::new(2, 1),
1884 "\t",
1885 ),
1886 ],
1887 None,
1888 cx,
1889 )
1890 });
1891
1892 assert_eq!(
1893 map.update(cx, |map, cx| map.snapshot(cx))
1894 .text_chunks(DisplayRow(1))
1895 .collect::<String>()
1896 .lines()
1897 .next(),
1898 Some(" b bbbbb")
1899 );
1900 assert_eq!(
1901 map.update(cx, |map, cx| map.snapshot(cx))
1902 .text_chunks(DisplayRow(2))
1903 .collect::<String>()
1904 .lines()
1905 .next(),
1906 Some("c ccccc")
1907 );
1908 }
1909
1910 #[gpui::test]
1911 async fn test_chunks(cx: &mut gpui::TestAppContext) {
1912 let text = r#"
1913 fn outer() {}
1914
1915 mod module {
1916 fn inner() {}
1917 }"#
1918 .unindent();
1919
1920 let theme =
1921 SyntaxTheme::new_test(vec![("mod.body", Hsla::red()), ("fn.name", Hsla::blue())]);
1922 let language = Arc::new(
1923 Language::new(
1924 LanguageConfig {
1925 name: "Test".into(),
1926 matcher: LanguageMatcher {
1927 path_suffixes: vec![".test".to_string()],
1928 ..Default::default()
1929 },
1930 ..Default::default()
1931 },
1932 Some(tree_sitter_rust::LANGUAGE.into()),
1933 )
1934 .with_highlights_query(
1935 r#"
1936 (mod_item name: (identifier) body: _ @mod.body)
1937 (function_item name: (identifier) @fn.name)
1938 "#,
1939 )
1940 .unwrap(),
1941 );
1942 language.set_theme(&theme);
1943
1944 cx.update(|cx| init_test(cx, |s| s.defaults.tab_size = Some(2.try_into().unwrap())));
1945
1946 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
1947 cx.condition(&buffer, |buf, _| !buf.is_parsing()).await;
1948 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
1949
1950 let font_size = px(14.0);
1951
1952 let map = cx.new(|cx| {
1953 DisplayMap::new(
1954 buffer,
1955 font("Helvetica"),
1956 font_size,
1957 None,
1958 true,
1959 1,
1960 1,
1961 1,
1962 FoldPlaceholder::test(),
1963 cx,
1964 )
1965 });
1966 assert_eq!(
1967 cx.update(|cx| syntax_chunks(DisplayRow(0)..DisplayRow(5), &map, &theme, cx)),
1968 vec![
1969 ("fn ".to_string(), None),
1970 ("outer".to_string(), Some(Hsla::blue())),
1971 ("() {}\n\nmod module ".to_string(), None),
1972 ("{\n fn ".to_string(), Some(Hsla::red())),
1973 ("inner".to_string(), Some(Hsla::blue())),
1974 ("() {}\n}".to_string(), Some(Hsla::red())),
1975 ]
1976 );
1977 assert_eq!(
1978 cx.update(|cx| syntax_chunks(DisplayRow(3)..DisplayRow(5), &map, &theme, cx)),
1979 vec![
1980 (" fn ".to_string(), Some(Hsla::red())),
1981 ("inner".to_string(), Some(Hsla::blue())),
1982 ("() {}\n}".to_string(), Some(Hsla::red())),
1983 ]
1984 );
1985
1986 map.update(cx, |map, cx| {
1987 map.fold(
1988 vec![Crease::simple(
1989 MultiBufferPoint::new(0, 6)..MultiBufferPoint::new(3, 2),
1990 FoldPlaceholder::test(),
1991 )],
1992 cx,
1993 )
1994 });
1995 assert_eq!(
1996 cx.update(|cx| syntax_chunks(DisplayRow(0)..DisplayRow(2), &map, &theme, cx)),
1997 vec![
1998 ("fn ".to_string(), None),
1999 ("out".to_string(), Some(Hsla::blue())),
2000 ("⋯".to_string(), None),
2001 (" fn ".to_string(), Some(Hsla::red())),
2002 ("inner".to_string(), Some(Hsla::blue())),
2003 ("() {}\n}".to_string(), Some(Hsla::red())),
2004 ]
2005 );
2006 }
2007
2008 #[gpui::test]
2009 async fn test_chunks_with_syntax_highlighting_across_blocks(cx: &mut gpui::TestAppContext) {
2010 cx.background_executor
2011 .set_block_on_ticks(usize::MAX..=usize::MAX);
2012
2013 let text = r#"
2014 const A: &str = "
2015 one
2016 two
2017 three
2018 ";
2019 const B: &str = "four";
2020 "#
2021 .unindent();
2022
2023 let theme = SyntaxTheme::new_test(vec![
2024 ("string", Hsla::red()),
2025 ("punctuation", Hsla::blue()),
2026 ("keyword", Hsla::green()),
2027 ]);
2028 let language = Arc::new(
2029 Language::new(
2030 LanguageConfig {
2031 name: "Rust".into(),
2032 ..Default::default()
2033 },
2034 Some(tree_sitter_rust::LANGUAGE.into()),
2035 )
2036 .with_highlights_query(
2037 r#"
2038 (string_literal) @string
2039 "const" @keyword
2040 [":" ";"] @punctuation
2041 "#,
2042 )
2043 .unwrap(),
2044 );
2045 language.set_theme(&theme);
2046
2047 cx.update(|cx| init_test(cx, |_| {}));
2048
2049 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
2050 cx.condition(&buffer, |buf, _| !buf.is_parsing()).await;
2051 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
2052 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
2053
2054 let map = cx.new(|cx| {
2055 DisplayMap::new(
2056 buffer,
2057 font("Courier"),
2058 px(16.0),
2059 None,
2060 true,
2061 1,
2062 1,
2063 0,
2064 FoldPlaceholder::test(),
2065 cx,
2066 )
2067 });
2068
2069 // Insert a block in the middle of a multi-line string literal
2070 map.update(cx, |map, cx| {
2071 map.insert_blocks(
2072 [BlockProperties {
2073 placement: BlockPlacement::Below(
2074 buffer_snapshot.anchor_before(Point::new(1, 0)),
2075 ),
2076 height: 1,
2077 style: BlockStyle::Sticky,
2078 render: Arc::new(|_| div().into_any()),
2079 priority: 0,
2080 }],
2081 cx,
2082 )
2083 });
2084
2085 pretty_assertions::assert_eq!(
2086 cx.update(|cx| syntax_chunks(DisplayRow(0)..DisplayRow(7), &map, &theme, cx)),
2087 [
2088 ("const".into(), Some(Hsla::green())),
2089 (" A".into(), None),
2090 (":".into(), Some(Hsla::blue())),
2091 (" &str = ".into(), None),
2092 ("\"\n one\n".into(), Some(Hsla::red())),
2093 ("\n".into(), None),
2094 (" two\n three\n\"".into(), Some(Hsla::red())),
2095 (";".into(), Some(Hsla::blue())),
2096 ("\n".into(), None),
2097 ("const".into(), Some(Hsla::green())),
2098 (" B".into(), None),
2099 (":".into(), Some(Hsla::blue())),
2100 (" &str = ".into(), None),
2101 ("\"four\"".into(), Some(Hsla::red())),
2102 (";".into(), Some(Hsla::blue())),
2103 ("\n".into(), None),
2104 ]
2105 );
2106 }
2107
2108 #[gpui::test]
2109 async fn test_chunks_with_diagnostics_across_blocks(cx: &mut gpui::TestAppContext) {
2110 cx.background_executor
2111 .set_block_on_ticks(usize::MAX..=usize::MAX);
2112
2113 let text = r#"
2114 struct A {
2115 b: usize;
2116 }
2117 const c: usize = 1;
2118 "#
2119 .unindent();
2120
2121 cx.update(|cx| init_test(cx, |_| {}));
2122
2123 let buffer = cx.new(|cx| Buffer::local(text, cx));
2124
2125 buffer.update(cx, |buffer, cx| {
2126 buffer.update_diagnostics(
2127 LanguageServerId(0),
2128 DiagnosticSet::new(
2129 [DiagnosticEntry {
2130 range: PointUtf16::new(0, 0)..PointUtf16::new(2, 1),
2131 diagnostic: Diagnostic {
2132 severity: DiagnosticSeverity::ERROR,
2133 group_id: 1,
2134 message: "hi".into(),
2135 ..Default::default()
2136 },
2137 }],
2138 buffer,
2139 ),
2140 cx,
2141 )
2142 });
2143
2144 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
2145 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
2146
2147 let map = cx.new(|cx| {
2148 DisplayMap::new(
2149 buffer,
2150 font("Courier"),
2151 px(16.0),
2152 None,
2153 true,
2154 1,
2155 1,
2156 0,
2157 FoldPlaceholder::test(),
2158 cx,
2159 )
2160 });
2161
2162 let black = gpui::black().to_rgb();
2163 let red = gpui::red().to_rgb();
2164
2165 // Insert a block in the middle of a multi-line diagnostic.
2166 map.update(cx, |map, cx| {
2167 map.highlight_text(
2168 TypeId::of::<usize>(),
2169 vec![
2170 buffer_snapshot.anchor_before(Point::new(3, 9))
2171 ..buffer_snapshot.anchor_after(Point::new(3, 14)),
2172 buffer_snapshot.anchor_before(Point::new(3, 17))
2173 ..buffer_snapshot.anchor_after(Point::new(3, 18)),
2174 ],
2175 red.into(),
2176 );
2177 map.insert_blocks(
2178 [BlockProperties {
2179 placement: BlockPlacement::Below(
2180 buffer_snapshot.anchor_before(Point::new(1, 0)),
2181 ),
2182 height: 1,
2183 style: BlockStyle::Sticky,
2184 render: Arc::new(|_| div().into_any()),
2185 priority: 0,
2186 }],
2187 cx,
2188 )
2189 });
2190
2191 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
2192 let mut chunks = Vec::<(String, Option<DiagnosticSeverity>, Rgba)>::new();
2193 for chunk in snapshot.chunks(DisplayRow(0)..DisplayRow(5), true, Default::default()) {
2194 let color = chunk
2195 .highlight_style
2196 .and_then(|style| style.color)
2197 .map_or(black, |color| color.to_rgb());
2198 if let Some((last_chunk, last_severity, last_color)) = chunks.last_mut() {
2199 if *last_severity == chunk.diagnostic_severity && *last_color == color {
2200 last_chunk.push_str(chunk.text);
2201 continue;
2202 }
2203 }
2204
2205 chunks.push((chunk.text.to_string(), chunk.diagnostic_severity, color));
2206 }
2207
2208 assert_eq!(
2209 chunks,
2210 [
2211 (
2212 "struct A {\n b: usize;\n".into(),
2213 Some(DiagnosticSeverity::ERROR),
2214 black
2215 ),
2216 ("\n".into(), None, black),
2217 ("}".into(), Some(DiagnosticSeverity::ERROR), black),
2218 ("\nconst c: ".into(), None, black),
2219 ("usize".into(), None, red),
2220 (" = ".into(), None, black),
2221 ("1".into(), None, red),
2222 (";\n".into(), None, black),
2223 ]
2224 );
2225 }
2226
2227 #[gpui::test]
2228 async fn test_point_translation_with_replace_blocks(cx: &mut gpui::TestAppContext) {
2229 cx.background_executor
2230 .set_block_on_ticks(usize::MAX..=usize::MAX);
2231
2232 cx.update(|cx| init_test(cx, |_| {}));
2233
2234 let buffer = cx.update(|cx| MultiBuffer::build_simple("abcde\nfghij\nklmno\npqrst", cx));
2235 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
2236 let map = cx.new(|cx| {
2237 DisplayMap::new(
2238 buffer.clone(),
2239 font("Courier"),
2240 px(16.0),
2241 None,
2242 true,
2243 1,
2244 1,
2245 0,
2246 FoldPlaceholder::test(),
2247 cx,
2248 )
2249 });
2250
2251 let snapshot = map.update(cx, |map, cx| {
2252 map.insert_blocks(
2253 [BlockProperties {
2254 placement: BlockPlacement::Replace(
2255 buffer_snapshot.anchor_before(Point::new(1, 2))
2256 ..=buffer_snapshot.anchor_after(Point::new(2, 3)),
2257 ),
2258 height: 4,
2259 style: BlockStyle::Fixed,
2260 render: Arc::new(|_| div().into_any()),
2261 priority: 0,
2262 }],
2263 cx,
2264 );
2265 map.snapshot(cx)
2266 });
2267
2268 assert_eq!(snapshot.text(), "abcde\n\n\n\n\npqrst");
2269
2270 let point_to_display_points = [
2271 (Point::new(1, 0), DisplayPoint::new(DisplayRow(1), 0)),
2272 (Point::new(2, 0), DisplayPoint::new(DisplayRow(1), 0)),
2273 (Point::new(3, 0), DisplayPoint::new(DisplayRow(5), 0)),
2274 ];
2275 for (buffer_point, display_point) in point_to_display_points {
2276 assert_eq!(
2277 snapshot.point_to_display_point(buffer_point, Bias::Left),
2278 display_point,
2279 "point_to_display_point({:?}, Bias::Left)",
2280 buffer_point
2281 );
2282 assert_eq!(
2283 snapshot.point_to_display_point(buffer_point, Bias::Right),
2284 display_point,
2285 "point_to_display_point({:?}, Bias::Right)",
2286 buffer_point
2287 );
2288 }
2289
2290 let display_points_to_points = [
2291 (
2292 DisplayPoint::new(DisplayRow(1), 0),
2293 Point::new(1, 0),
2294 Point::new(2, 5),
2295 ),
2296 (
2297 DisplayPoint::new(DisplayRow(2), 0),
2298 Point::new(1, 0),
2299 Point::new(2, 5),
2300 ),
2301 (
2302 DisplayPoint::new(DisplayRow(3), 0),
2303 Point::new(1, 0),
2304 Point::new(2, 5),
2305 ),
2306 (
2307 DisplayPoint::new(DisplayRow(4), 0),
2308 Point::new(1, 0),
2309 Point::new(2, 5),
2310 ),
2311 (
2312 DisplayPoint::new(DisplayRow(5), 0),
2313 Point::new(3, 0),
2314 Point::new(3, 0),
2315 ),
2316 ];
2317 for (display_point, left_buffer_point, right_buffer_point) in display_points_to_points {
2318 assert_eq!(
2319 snapshot.display_point_to_point(display_point, Bias::Left),
2320 left_buffer_point,
2321 "display_point_to_point({:?}, Bias::Left)",
2322 display_point
2323 );
2324 assert_eq!(
2325 snapshot.display_point_to_point(display_point, Bias::Right),
2326 right_buffer_point,
2327 "display_point_to_point({:?}, Bias::Right)",
2328 display_point
2329 );
2330 }
2331 }
2332
2333 // todo(linux) fails due to pixel differences in text rendering
2334 #[cfg(target_os = "macos")]
2335 #[gpui::test]
2336 async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
2337 cx.background_executor
2338 .set_block_on_ticks(usize::MAX..=usize::MAX);
2339
2340 let text = r#"
2341 fn outer() {}
2342
2343 mod module {
2344 fn inner() {}
2345 }"#
2346 .unindent();
2347
2348 let theme =
2349 SyntaxTheme::new_test(vec![("mod.body", Hsla::red()), ("fn.name", Hsla::blue())]);
2350 let language = Arc::new(
2351 Language::new(
2352 LanguageConfig {
2353 name: "Test".into(),
2354 matcher: LanguageMatcher {
2355 path_suffixes: vec![".test".to_string()],
2356 ..Default::default()
2357 },
2358 ..Default::default()
2359 },
2360 Some(tree_sitter_rust::LANGUAGE.into()),
2361 )
2362 .with_highlights_query(
2363 r#"
2364 (mod_item name: (identifier) body: _ @mod.body)
2365 (function_item name: (identifier) @fn.name)
2366 "#,
2367 )
2368 .unwrap(),
2369 );
2370 language.set_theme(&theme);
2371
2372 cx.update(|cx| init_test(cx, |_| {}));
2373
2374 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
2375 cx.condition(&buffer, |buf, _| !buf.is_parsing()).await;
2376 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
2377
2378 let font_size = px(16.0);
2379
2380 let map = cx.new(|cx| {
2381 DisplayMap::new(
2382 buffer,
2383 font("Courier"),
2384 font_size,
2385 Some(px(40.0)),
2386 true,
2387 1,
2388 1,
2389 0,
2390 FoldPlaceholder::test(),
2391 cx,
2392 )
2393 });
2394 assert_eq!(
2395 cx.update(|cx| syntax_chunks(DisplayRow(0)..DisplayRow(5), &map, &theme, cx)),
2396 [
2397 ("fn \n".to_string(), None),
2398 ("oute\nr".to_string(), Some(Hsla::blue())),
2399 ("() \n{}\n\n".to_string(), None),
2400 ]
2401 );
2402 assert_eq!(
2403 cx.update(|cx| syntax_chunks(DisplayRow(3)..DisplayRow(5), &map, &theme, cx)),
2404 [("{}\n\n".to_string(), None)]
2405 );
2406
2407 map.update(cx, |map, cx| {
2408 map.fold(
2409 vec![Crease::simple(
2410 MultiBufferPoint::new(0, 6)..MultiBufferPoint::new(3, 2),
2411 FoldPlaceholder::test(),
2412 )],
2413 cx,
2414 )
2415 });
2416 assert_eq!(
2417 cx.update(|cx| syntax_chunks(DisplayRow(1)..DisplayRow(4), &map, &theme, cx)),
2418 [
2419 ("out".to_string(), Some(Hsla::blue())),
2420 ("⋯\n".to_string(), None),
2421 (" \nfn ".to_string(), Some(Hsla::red())),
2422 ("i\n".to_string(), Some(Hsla::blue()))
2423 ]
2424 );
2425 }
2426
2427 #[gpui::test]
2428 async fn test_chunks_with_text_highlights(cx: &mut gpui::TestAppContext) {
2429 cx.update(|cx| init_test(cx, |_| {}));
2430
2431 let theme =
2432 SyntaxTheme::new_test(vec![("operator", Hsla::red()), ("string", Hsla::green())]);
2433 let language = Arc::new(
2434 Language::new(
2435 LanguageConfig {
2436 name: "Test".into(),
2437 matcher: LanguageMatcher {
2438 path_suffixes: vec![".test".to_string()],
2439 ..Default::default()
2440 },
2441 ..Default::default()
2442 },
2443 Some(tree_sitter_rust::LANGUAGE.into()),
2444 )
2445 .with_highlights_query(
2446 r#"
2447 ":" @operator
2448 (string_literal) @string
2449 "#,
2450 )
2451 .unwrap(),
2452 );
2453 language.set_theme(&theme);
2454
2455 let (text, highlighted_ranges) = marked_text_ranges(r#"constˇ «a»: B = "c «d»""#, false);
2456
2457 let buffer = cx.new(|cx| Buffer::local(text, cx).with_language(language, cx));
2458 cx.condition(&buffer, |buf, _| !buf.is_parsing()).await;
2459
2460 let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
2461 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
2462
2463 let font_size = px(16.0);
2464 let map = cx.new(|cx| {
2465 DisplayMap::new(
2466 buffer,
2467 font("Courier"),
2468 font_size,
2469 None,
2470 true,
2471 1,
2472 1,
2473 1,
2474 FoldPlaceholder::test(),
2475 cx,
2476 )
2477 });
2478
2479 enum MyType {}
2480
2481 let style = HighlightStyle {
2482 color: Some(Hsla::blue()),
2483 ..Default::default()
2484 };
2485
2486 map.update(cx, |map, _cx| {
2487 map.highlight_text(
2488 TypeId::of::<MyType>(),
2489 highlighted_ranges
2490 .into_iter()
2491 .map(|range| {
2492 buffer_snapshot.anchor_before(range.start)
2493 ..buffer_snapshot.anchor_before(range.end)
2494 })
2495 .collect(),
2496 style,
2497 );
2498 });
2499
2500 assert_eq!(
2501 cx.update(|cx| chunks(DisplayRow(0)..DisplayRow(10), &map, &theme, cx)),
2502 [
2503 ("const ".to_string(), None, None),
2504 ("a".to_string(), None, Some(Hsla::blue())),
2505 (":".to_string(), Some(Hsla::red()), None),
2506 (" B = ".to_string(), None, None),
2507 ("\"c ".to_string(), Some(Hsla::green()), None),
2508 ("d".to_string(), Some(Hsla::green()), Some(Hsla::blue())),
2509 ("\"".to_string(), Some(Hsla::green()), None),
2510 ]
2511 );
2512 }
2513
2514 #[gpui::test]
2515 fn test_clip_point(cx: &mut gpui::App) {
2516 init_test(cx, |_| {});
2517
2518 fn assert(text: &str, shift_right: bool, bias: Bias, cx: &mut gpui::App) {
2519 let (unmarked_snapshot, mut markers) = marked_display_snapshot(text, cx);
2520
2521 match bias {
2522 Bias::Left => {
2523 if shift_right {
2524 *markers[1].column_mut() += 1;
2525 }
2526
2527 assert_eq!(unmarked_snapshot.clip_point(markers[1], bias), markers[0])
2528 }
2529 Bias::Right => {
2530 if shift_right {
2531 *markers[0].column_mut() += 1;
2532 }
2533
2534 assert_eq!(unmarked_snapshot.clip_point(markers[0], bias), markers[1])
2535 }
2536 };
2537 }
2538
2539 use Bias::{Left, Right};
2540 assert("ˇˇα", false, Left, cx);
2541 assert("ˇˇα", true, Left, cx);
2542 assert("ˇˇα", false, Right, cx);
2543 assert("ˇαˇ", true, Right, cx);
2544 assert("ˇˇ✋", false, Left, cx);
2545 assert("ˇˇ✋", true, Left, cx);
2546 assert("ˇˇ✋", false, Right, cx);
2547 assert("ˇ✋ˇ", true, Right, cx);
2548 assert("ˇˇ🍐", false, Left, cx);
2549 assert("ˇˇ🍐", true, Left, cx);
2550 assert("ˇˇ🍐", false, Right, cx);
2551 assert("ˇ🍐ˇ", true, Right, cx);
2552 assert("ˇˇ\t", false, Left, cx);
2553 assert("ˇˇ\t", true, Left, cx);
2554 assert("ˇˇ\t", false, Right, cx);
2555 assert("ˇ\tˇ", true, Right, cx);
2556 assert(" ˇˇ\t", false, Left, cx);
2557 assert(" ˇˇ\t", true, Left, cx);
2558 assert(" ˇˇ\t", false, Right, cx);
2559 assert(" ˇ\tˇ", true, Right, cx);
2560 assert(" ˇˇ\t", false, Left, cx);
2561 assert(" ˇˇ\t", false, Right, cx);
2562 }
2563
2564 #[gpui::test]
2565 fn test_clip_at_line_ends(cx: &mut gpui::App) {
2566 init_test(cx, |_| {});
2567
2568 fn assert(text: &str, cx: &mut gpui::App) {
2569 let (mut unmarked_snapshot, markers) = marked_display_snapshot(text, cx);
2570 unmarked_snapshot.clip_at_line_ends = true;
2571 assert_eq!(
2572 unmarked_snapshot.clip_point(markers[1], Bias::Left),
2573 markers[0]
2574 );
2575 }
2576
2577 assert("ˇˇ", cx);
2578 assert("ˇaˇ", cx);
2579 assert("aˇbˇ", cx);
2580 assert("aˇαˇ", cx);
2581 }
2582
2583 #[gpui::test]
2584 fn test_creases(cx: &mut gpui::App) {
2585 init_test(cx, |_| {});
2586
2587 let text = "aaa\nbbb\nccc\nddd\neee\nfff\nggg\nhhh\niii\njjj\nkkk\nlll";
2588 let buffer = MultiBuffer::build_simple(text, cx);
2589 let font_size = px(14.0);
2590 cx.new(|cx| {
2591 let mut map = DisplayMap::new(
2592 buffer.clone(),
2593 font("Helvetica"),
2594 font_size,
2595 None,
2596 true,
2597 1,
2598 1,
2599 0,
2600 FoldPlaceholder::test(),
2601 cx,
2602 );
2603 let snapshot = map.buffer.read(cx).snapshot(cx);
2604 let range =
2605 snapshot.anchor_before(Point::new(2, 0))..snapshot.anchor_after(Point::new(3, 3));
2606
2607 map.crease_map.insert(
2608 [Crease::inline(
2609 range,
2610 FoldPlaceholder::test(),
2611 |_row, _status, _toggle, _window, _cx| div(),
2612 |_row, _status, _window, _cx| div(),
2613 )],
2614 &map.buffer.read(cx).snapshot(cx),
2615 );
2616
2617 map
2618 });
2619 }
2620
2621 #[gpui::test]
2622 fn test_tabs_with_multibyte_chars(cx: &mut gpui::App) {
2623 init_test(cx, |_| {});
2624
2625 let text = "✅\t\tα\nβ\t\n🏀β\t\tγ";
2626 let buffer = MultiBuffer::build_simple(text, cx);
2627 let font_size = px(14.0);
2628
2629 let map = cx.new(|cx| {
2630 DisplayMap::new(
2631 buffer.clone(),
2632 font("Helvetica"),
2633 font_size,
2634 None,
2635 true,
2636 1,
2637 1,
2638 0,
2639 FoldPlaceholder::test(),
2640 cx,
2641 )
2642 });
2643 let map = map.update(cx, |map, cx| map.snapshot(cx));
2644 assert_eq!(map.text(), "✅ α\nβ \n🏀β γ");
2645 assert_eq!(
2646 map.text_chunks(DisplayRow(0)).collect::<String>(),
2647 "✅ α\nβ \n🏀β γ"
2648 );
2649 assert_eq!(
2650 map.text_chunks(DisplayRow(1)).collect::<String>(),
2651 "β \n🏀β γ"
2652 );
2653 assert_eq!(
2654 map.text_chunks(DisplayRow(2)).collect::<String>(),
2655 "🏀β γ"
2656 );
2657
2658 let point = MultiBufferPoint::new(0, "✅\t\t".len() as u32);
2659 let display_point = DisplayPoint::new(DisplayRow(0), "✅ ".len() as u32);
2660 assert_eq!(point.to_display_point(&map), display_point);
2661 assert_eq!(display_point.to_point(&map), point);
2662
2663 let point = MultiBufferPoint::new(1, "β\t".len() as u32);
2664 let display_point = DisplayPoint::new(DisplayRow(1), "β ".len() as u32);
2665 assert_eq!(point.to_display_point(&map), display_point);
2666 assert_eq!(display_point.to_point(&map), point,);
2667
2668 let point = MultiBufferPoint::new(2, "🏀β\t\t".len() as u32);
2669 let display_point = DisplayPoint::new(DisplayRow(2), "🏀β ".len() as u32);
2670 assert_eq!(point.to_display_point(&map), display_point);
2671 assert_eq!(display_point.to_point(&map), point,);
2672
2673 // Display points inside of expanded tabs
2674 assert_eq!(
2675 DisplayPoint::new(DisplayRow(0), "✅ ".len() as u32).to_point(&map),
2676 MultiBufferPoint::new(0, "✅\t".len() as u32),
2677 );
2678 assert_eq!(
2679 DisplayPoint::new(DisplayRow(0), "✅ ".len() as u32).to_point(&map),
2680 MultiBufferPoint::new(0, "✅".len() as u32),
2681 );
2682
2683 // Clipping display points inside of multi-byte characters
2684 assert_eq!(
2685 map.clip_point(
2686 DisplayPoint::new(DisplayRow(0), "✅".len() as u32 - 1),
2687 Left
2688 ),
2689 DisplayPoint::new(DisplayRow(0), 0)
2690 );
2691 assert_eq!(
2692 map.clip_point(
2693 DisplayPoint::new(DisplayRow(0), "✅".len() as u32 - 1),
2694 Bias::Right
2695 ),
2696 DisplayPoint::new(DisplayRow(0), "✅".len() as u32)
2697 );
2698 }
2699
2700 #[gpui::test]
2701 fn test_max_point(cx: &mut gpui::App) {
2702 init_test(cx, |_| {});
2703
2704 let buffer = MultiBuffer::build_simple("aaa\n\t\tbbb", cx);
2705 let font_size = px(14.0);
2706 let map = cx.new(|cx| {
2707 DisplayMap::new(
2708 buffer.clone(),
2709 font("Helvetica"),
2710 font_size,
2711 None,
2712 true,
2713 1,
2714 1,
2715 0,
2716 FoldPlaceholder::test(),
2717 cx,
2718 )
2719 });
2720 assert_eq!(
2721 map.update(cx, |map, cx| map.snapshot(cx)).max_point(),
2722 DisplayPoint::new(DisplayRow(1), 11)
2723 )
2724 }
2725
2726 fn syntax_chunks(
2727 rows: Range<DisplayRow>,
2728 map: &Entity<DisplayMap>,
2729 theme: &SyntaxTheme,
2730 cx: &mut App,
2731 ) -> Vec<(String, Option<Hsla>)> {
2732 chunks(rows, map, theme, cx)
2733 .into_iter()
2734 .map(|(text, color, _)| (text, color))
2735 .collect()
2736 }
2737
2738 fn chunks(
2739 rows: Range<DisplayRow>,
2740 map: &Entity<DisplayMap>,
2741 theme: &SyntaxTheme,
2742 cx: &mut App,
2743 ) -> Vec<(String, Option<Hsla>, Option<Hsla>)> {
2744 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
2745 let mut chunks: Vec<(String, Option<Hsla>, Option<Hsla>)> = Vec::new();
2746 for chunk in snapshot.chunks(rows, true, HighlightStyles::default()) {
2747 let syntax_color = chunk
2748 .syntax_highlight_id
2749 .and_then(|id| id.style(theme)?.color);
2750 let highlight_color = chunk.highlight_style.and_then(|style| style.color);
2751 if let Some((last_chunk, last_syntax_color, last_highlight_color)) = chunks.last_mut() {
2752 if syntax_color == *last_syntax_color && highlight_color == *last_highlight_color {
2753 last_chunk.push_str(chunk.text);
2754 continue;
2755 }
2756 }
2757 chunks.push((chunk.text.to_string(), syntax_color, highlight_color));
2758 }
2759 chunks
2760 }
2761
2762 fn init_test(cx: &mut App, f: impl Fn(&mut AllLanguageSettingsContent)) {
2763 let settings = SettingsStore::test(cx);
2764 cx.set_global(settings);
2765 language::init(cx);
2766 crate::init(cx);
2767 Project::init_settings(cx);
2768 theme::init(LoadThemes::JustBase, cx);
2769 cx.update_global::<SettingsStore, _>(|store, cx| {
2770 store.update_user_settings::<AllLanguageSettings>(cx, f);
2771 });
2772 }
2773}