1use super::{Bias, DisplayPoint, DisplaySnapshot, SelectionGoal, ToDisplayPoint};
2use crate::{char_kind, CharKind, EditorStyle, ToOffset, ToPoint};
3use gpui::TextSystem;
4use language::Point;
5use std::ops::Range;
6
7#[derive(Debug, PartialEq)]
8pub enum FindRange {
9 SingleLine,
10 MultiLine,
11}
12
13/// TextLayoutDetails encompasses everything we need to move vertically
14/// taking into account variable width characters.
15pub struct TextLayoutDetails {
16 pub text_system: TextSystem,
17 pub editor_style: EditorStyle,
18}
19
20pub fn left(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
21 if point.column() > 0 {
22 *point.column_mut() -= 1;
23 } else if point.row() > 0 {
24 *point.row_mut() -= 1;
25 *point.column_mut() = map.line_len(point.row());
26 }
27 map.clip_point(point, Bias::Left)
28}
29
30pub fn saturating_left(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
31 if point.column() > 0 {
32 *point.column_mut() -= 1;
33 }
34 map.clip_point(point, Bias::Left)
35}
36
37pub fn right(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
38 let max_column = map.line_len(point.row());
39 if point.column() < max_column {
40 *point.column_mut() += 1;
41 } else if point.row() < map.max_point().row() {
42 *point.row_mut() += 1;
43 *point.column_mut() = 0;
44 }
45 map.clip_point(point, Bias::Right)
46}
47
48pub fn saturating_right(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
49 *point.column_mut() += 1;
50 map.clip_point(point, Bias::Right)
51}
52
53pub fn up(
54 map: &DisplaySnapshot,
55 start: DisplayPoint,
56 goal: SelectionGoal,
57 preserve_column_at_start: bool,
58 text_layout_details: &TextLayoutDetails,
59) -> (DisplayPoint, SelectionGoal) {
60 up_by_rows(
61 map,
62 start,
63 1,
64 goal,
65 preserve_column_at_start,
66 text_layout_details,
67 )
68}
69
70pub fn down(
71 map: &DisplaySnapshot,
72 start: DisplayPoint,
73 goal: SelectionGoal,
74 preserve_column_at_end: bool,
75 text_layout_details: &TextLayoutDetails,
76) -> (DisplayPoint, SelectionGoal) {
77 down_by_rows(
78 map,
79 start,
80 1,
81 goal,
82 preserve_column_at_end,
83 text_layout_details,
84 )
85}
86
87pub fn up_by_rows(
88 map: &DisplaySnapshot,
89 start: DisplayPoint,
90 row_count: u32,
91 goal: SelectionGoal,
92 preserve_column_at_start: bool,
93 text_layout_details: &TextLayoutDetails,
94) -> (DisplayPoint, SelectionGoal) {
95 let mut goal_x = match goal {
96 SelectionGoal::HorizontalPosition(x) => x,
97 SelectionGoal::WrappedHorizontalPosition((_, x)) => x,
98 SelectionGoal::HorizontalRange { end, .. } => end,
99 _ => map.x_for_point(start, text_layout_details),
100 };
101
102 let prev_row = start.row().saturating_sub(row_count);
103 let mut point = map.clip_point(
104 DisplayPoint::new(prev_row, map.line_len(prev_row)),
105 Bias::Left,
106 );
107 if point.row() < start.row() {
108 *point.column_mut() = map.column_for_x(point.row(), goal_x, text_layout_details)
109 } else if preserve_column_at_start {
110 return (start, goal);
111 } else {
112 point = DisplayPoint::new(0, 0);
113 goal_x = 0.0;
114 }
115
116 let mut clipped_point = map.clip_point(point, Bias::Left);
117 if clipped_point.row() < point.row() {
118 clipped_point = map.clip_point(point, Bias::Right);
119 }
120 (clipped_point, SelectionGoal::HorizontalPosition(goal_x))
121}
122
123pub fn down_by_rows(
124 map: &DisplaySnapshot,
125 start: DisplayPoint,
126 row_count: u32,
127 goal: SelectionGoal,
128 preserve_column_at_end: bool,
129 text_layout_details: &TextLayoutDetails,
130) -> (DisplayPoint, SelectionGoal) {
131 let mut goal_x = match goal {
132 SelectionGoal::HorizontalPosition(x) => x,
133 SelectionGoal::WrappedHorizontalPosition((_, x)) => x,
134 SelectionGoal::HorizontalRange { end, .. } => end,
135 _ => map.x_for_point(start, text_layout_details),
136 };
137
138 let new_row = start.row() + row_count;
139 let mut point = map.clip_point(DisplayPoint::new(new_row, 0), Bias::Right);
140 if point.row() > start.row() {
141 *point.column_mut() = map.column_for_x(point.row(), goal_x, text_layout_details)
142 } else if preserve_column_at_end {
143 return (start, goal);
144 } else {
145 point = map.max_point();
146 goal_x = map.x_for_point(point, text_layout_details)
147 }
148
149 let mut clipped_point = map.clip_point(point, Bias::Right);
150 if clipped_point.row() > point.row() {
151 clipped_point = map.clip_point(point, Bias::Left);
152 }
153 (clipped_point, SelectionGoal::HorizontalPosition(goal_x))
154}
155
156pub fn line_beginning(
157 map: &DisplaySnapshot,
158 display_point: DisplayPoint,
159 stop_at_soft_boundaries: bool,
160) -> DisplayPoint {
161 let point = display_point.to_point(map);
162 let soft_line_start = map.clip_point(DisplayPoint::new(display_point.row(), 0), Bias::Right);
163 let line_start = map.prev_line_boundary(point).1;
164
165 if stop_at_soft_boundaries && display_point != soft_line_start {
166 soft_line_start
167 } else {
168 line_start
169 }
170}
171
172pub fn indented_line_beginning(
173 map: &DisplaySnapshot,
174 display_point: DisplayPoint,
175 stop_at_soft_boundaries: bool,
176) -> DisplayPoint {
177 let point = display_point.to_point(map);
178 let soft_line_start = map.clip_point(DisplayPoint::new(display_point.row(), 0), Bias::Right);
179 let indent_start = Point::new(
180 point.row,
181 map.buffer_snapshot.indent_size_for_line(point.row).len,
182 )
183 .to_display_point(map);
184 let line_start = map.prev_line_boundary(point).1;
185
186 if stop_at_soft_boundaries && soft_line_start > indent_start && display_point != soft_line_start
187 {
188 soft_line_start
189 } else if stop_at_soft_boundaries && display_point != indent_start {
190 indent_start
191 } else {
192 line_start
193 }
194}
195
196pub fn line_end(
197 map: &DisplaySnapshot,
198 display_point: DisplayPoint,
199 stop_at_soft_boundaries: bool,
200) -> DisplayPoint {
201 let soft_line_end = map.clip_point(
202 DisplayPoint::new(display_point.row(), map.line_len(display_point.row())),
203 Bias::Left,
204 );
205 if stop_at_soft_boundaries && display_point != soft_line_end {
206 soft_line_end
207 } else {
208 map.next_line_boundary(display_point.to_point(map)).1
209 }
210}
211
212pub fn previous_word_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
213 let raw_point = point.to_point(map);
214 let scope = map.buffer_snapshot.language_scope_at(raw_point);
215
216 find_preceding_boundary(map, point, FindRange::MultiLine, |left, right| {
217 (char_kind(&scope, left) != char_kind(&scope, right) && !right.is_whitespace())
218 || left == '\n'
219 })
220}
221
222pub fn previous_subword_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
223 let raw_point = point.to_point(map);
224 let scope = map.buffer_snapshot.language_scope_at(raw_point);
225
226 find_preceding_boundary(map, point, FindRange::MultiLine, |left, right| {
227 let is_word_start =
228 char_kind(&scope, left) != char_kind(&scope, right) && !right.is_whitespace();
229 let is_subword_start =
230 left == '_' && right != '_' || left.is_lowercase() && right.is_uppercase();
231 is_word_start || is_subword_start || left == '\n'
232 })
233}
234
235pub fn next_word_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
236 let raw_point = point.to_point(map);
237 let scope = map.buffer_snapshot.language_scope_at(raw_point);
238
239 find_boundary(map, point, FindRange::MultiLine, |left, right| {
240 (char_kind(&scope, left) != char_kind(&scope, right) && !left.is_whitespace())
241 || right == '\n'
242 })
243}
244
245pub fn next_subword_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
246 let raw_point = point.to_point(map);
247 let scope = map.buffer_snapshot.language_scope_at(raw_point);
248
249 find_boundary(map, point, FindRange::MultiLine, |left, right| {
250 let is_word_end =
251 (char_kind(&scope, left) != char_kind(&scope, right)) && !left.is_whitespace();
252 let is_subword_end =
253 left != '_' && right == '_' || left.is_lowercase() && right.is_uppercase();
254 is_word_end || is_subword_end || right == '\n'
255 })
256}
257
258pub fn start_of_paragraph(
259 map: &DisplaySnapshot,
260 display_point: DisplayPoint,
261 mut count: usize,
262) -> DisplayPoint {
263 let point = display_point.to_point(map);
264 if point.row == 0 {
265 return DisplayPoint::zero();
266 }
267
268 let mut found_non_blank_line = false;
269 for row in (0..point.row + 1).rev() {
270 let blank = map.buffer_snapshot.is_line_blank(row);
271 if found_non_blank_line && blank {
272 if count <= 1 {
273 return Point::new(row, 0).to_display_point(map);
274 }
275 count -= 1;
276 found_non_blank_line = false;
277 }
278
279 found_non_blank_line |= !blank;
280 }
281
282 DisplayPoint::zero()
283}
284
285pub fn end_of_paragraph(
286 map: &DisplaySnapshot,
287 display_point: DisplayPoint,
288 mut count: usize,
289) -> DisplayPoint {
290 let point = display_point.to_point(map);
291 if point.row == map.max_buffer_row() {
292 return map.max_point();
293 }
294
295 let mut found_non_blank_line = false;
296 for row in point.row..map.max_buffer_row() + 1 {
297 let blank = map.buffer_snapshot.is_line_blank(row);
298 if found_non_blank_line && blank {
299 if count <= 1 {
300 return Point::new(row, 0).to_display_point(map);
301 }
302 count -= 1;
303 found_non_blank_line = false;
304 }
305
306 found_non_blank_line |= !blank;
307 }
308
309 map.max_point()
310}
311
312/// Scans for a boundary preceding the given start point `from` until a boundary is found,
313/// indicated by the given predicate returning true.
314/// The predicate is called with the character to the left and right of the candidate boundary location.
315/// If FindRange::SingleLine is specified and no boundary is found before the start of the current line, the start of the current line will be returned.
316pub fn find_preceding_boundary(
317 map: &DisplaySnapshot,
318 from: DisplayPoint,
319 find_range: FindRange,
320 mut is_boundary: impl FnMut(char, char) -> bool,
321) -> DisplayPoint {
322 let mut prev_ch = None;
323 let mut offset = from.to_point(map).to_offset(&map.buffer_snapshot);
324
325 for ch in map.buffer_snapshot.reversed_chars_at(offset) {
326 if find_range == FindRange::SingleLine && ch == '\n' {
327 break;
328 }
329 if let Some(prev_ch) = prev_ch {
330 if is_boundary(ch, prev_ch) {
331 break;
332 }
333 }
334
335 offset -= ch.len_utf8();
336 prev_ch = Some(ch);
337 }
338
339 map.clip_point(offset.to_display_point(map), Bias::Left)
340}
341
342/// Scans for a boundary following the given start point until a boundary is found, indicated by the
343/// given predicate returning true. The predicate is called with the character to the left and right
344/// of the candidate boundary location, and will be called with `\n` characters indicating the start
345/// or end of a line.
346pub fn find_boundary(
347 map: &DisplaySnapshot,
348 from: DisplayPoint,
349 find_range: FindRange,
350 mut is_boundary: impl FnMut(char, char) -> bool,
351) -> DisplayPoint {
352 let mut offset = from.to_offset(&map, Bias::Right);
353 let mut prev_ch = None;
354
355 for ch in map.buffer_snapshot.chars_at(offset) {
356 if find_range == FindRange::SingleLine && ch == '\n' {
357 break;
358 }
359 if let Some(prev_ch) = prev_ch {
360 if is_boundary(prev_ch, ch) {
361 break;
362 }
363 }
364
365 offset += ch.len_utf8();
366 prev_ch = Some(ch);
367 }
368 map.clip_point(offset.to_display_point(map), Bias::Right)
369}
370
371pub fn chars_after(
372 map: &DisplaySnapshot,
373 mut offset: usize,
374) -> impl Iterator<Item = (char, Range<usize>)> + '_ {
375 map.buffer_snapshot.chars_at(offset).map(move |ch| {
376 let before = offset;
377 offset = offset + ch.len_utf8();
378 (ch, before..offset)
379 })
380}
381
382pub fn chars_before(
383 map: &DisplaySnapshot,
384 mut offset: usize,
385) -> impl Iterator<Item = (char, Range<usize>)> + '_ {
386 map.buffer_snapshot
387 .reversed_chars_at(offset)
388 .map(move |ch| {
389 let after = offset;
390 offset = offset - ch.len_utf8();
391 (ch, offset..after)
392 })
393}
394
395pub fn is_inside_word(map: &DisplaySnapshot, point: DisplayPoint) -> bool {
396 let raw_point = point.to_point(map);
397 let scope = map.buffer_snapshot.language_scope_at(raw_point);
398 let ix = map.clip_point(point, Bias::Left).to_offset(map, Bias::Left);
399 let text = &map.buffer_snapshot;
400 let next_char_kind = text.chars_at(ix).next().map(|c| char_kind(&scope, c));
401 let prev_char_kind = text
402 .reversed_chars_at(ix)
403 .next()
404 .map(|c| char_kind(&scope, c));
405 prev_char_kind.zip(next_char_kind) == Some((CharKind::Word, CharKind::Word))
406}
407
408pub fn surrounding_word(map: &DisplaySnapshot, position: DisplayPoint) -> Range<DisplayPoint> {
409 let position = map
410 .clip_point(position, Bias::Left)
411 .to_offset(map, Bias::Left);
412 let (range, _) = map.buffer_snapshot.surrounding_word(position);
413 let start = range
414 .start
415 .to_point(&map.buffer_snapshot)
416 .to_display_point(map);
417 let end = range
418 .end
419 .to_point(&map.buffer_snapshot)
420 .to_display_point(map);
421 start..end
422}
423
424pub fn split_display_range_by_lines(
425 map: &DisplaySnapshot,
426 range: Range<DisplayPoint>,
427) -> Vec<Range<DisplayPoint>> {
428 let mut result = Vec::new();
429
430 let mut start = range.start;
431 // Loop over all the covered rows until the one containing the range end
432 for row in range.start.row()..range.end.row() {
433 let row_end_column = map.line_len(row);
434 let end = map.clip_point(DisplayPoint::new(row, row_end_column), Bias::Left);
435 if start != end {
436 result.push(start..end);
437 }
438 start = map.clip_point(DisplayPoint::new(row + 1, 0), Bias::Left);
439 }
440
441 // Add the final range from the start of the last end to the original range end.
442 result.push(start..range.end);
443
444 result
445}
446
447// #[cfg(test)]
448// mod tests {
449// use super::*;
450// use crate::{
451// display_map::Inlay,
452// test::{},
453// Buffer, DisplayMap, ExcerptRange, InlayId, MultiBuffer,
454// };
455// use project::Project;
456// use settings::SettingsStore;
457// use util::post_inc;
458
459// #[gpui::test]
460// fn test_previous_word_start(cx: &mut gpui::AppContext) {
461// init_test(cx);
462
463// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
464// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
465// assert_eq!(
466// previous_word_start(&snapshot, display_points[1]),
467// display_points[0]
468// );
469// }
470
471// assert("\nˇ ˇlorem", cx);
472// assert("ˇ\nˇ lorem", cx);
473// assert(" ˇloremˇ", cx);
474// assert("ˇ ˇlorem", cx);
475// assert(" ˇlorˇem", cx);
476// assert("\nlorem\nˇ ˇipsum", cx);
477// assert("\n\nˇ\nˇ", cx);
478// assert(" ˇlorem ˇipsum", cx);
479// assert("loremˇ-ˇipsum", cx);
480// assert("loremˇ-#$@ˇipsum", cx);
481// assert("ˇlorem_ˇipsum", cx);
482// assert(" ˇdefγˇ", cx);
483// assert(" ˇbcΔˇ", cx);
484// assert(" abˇ——ˇcd", cx);
485// }
486
487// #[gpui::test]
488// fn test_previous_subword_start(cx: &mut gpui::AppContext) {
489// init_test(cx);
490
491// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
492// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
493// assert_eq!(
494// previous_subword_start(&snapshot, display_points[1]),
495// display_points[0]
496// );
497// }
498
499// // Subword boundaries are respected
500// assert("lorem_ˇipˇsum", cx);
501// assert("lorem_ˇipsumˇ", cx);
502// assert("ˇlorem_ˇipsum", cx);
503// assert("lorem_ˇipsum_ˇdolor", cx);
504// assert("loremˇIpˇsum", cx);
505// assert("loremˇIpsumˇ", cx);
506
507// // Word boundaries are still respected
508// assert("\nˇ ˇlorem", cx);
509// assert(" ˇloremˇ", cx);
510// assert(" ˇlorˇem", cx);
511// assert("\nlorem\nˇ ˇipsum", cx);
512// assert("\n\nˇ\nˇ", cx);
513// assert(" ˇlorem ˇipsum", cx);
514// assert("loremˇ-ˇipsum", cx);
515// assert("loremˇ-#$@ˇipsum", cx);
516// assert(" ˇdefγˇ", cx);
517// assert(" bcˇΔˇ", cx);
518// assert(" ˇbcδˇ", cx);
519// assert(" abˇ——ˇcd", cx);
520// }
521
522// #[gpui::test]
523// fn test_find_preceding_boundary(cx: &mut gpui::AppContext) {
524// init_test(cx);
525
526// fn assert(
527// marked_text: &str,
528// cx: &mut gpui::AppContext,
529// is_boundary: impl FnMut(char, char) -> bool,
530// ) {
531// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
532// assert_eq!(
533// find_preceding_boundary(
534// &snapshot,
535// display_points[1],
536// FindRange::MultiLine,
537// is_boundary
538// ),
539// display_points[0]
540// );
541// }
542
543// assert("abcˇdef\ngh\nijˇk", cx, |left, right| {
544// left == 'c' && right == 'd'
545// });
546// assert("abcdef\nˇgh\nijˇk", cx, |left, right| {
547// left == '\n' && right == 'g'
548// });
549// let mut line_count = 0;
550// assert("abcdef\nˇgh\nijˇk", cx, |left, _| {
551// if left == '\n' {
552// line_count += 1;
553// line_count == 2
554// } else {
555// false
556// }
557// });
558// }
559
560// #[gpui::test]
561// fn test_find_preceding_boundary_with_inlays(cx: &mut gpui::AppContext) {
562// init_test(cx);
563
564// let input_text = "abcdefghijklmnopqrstuvwxys";
565// let family_id = cx
566// .font_cache()
567// .load_family(&["Helvetica"], &Default::default())
568// .unwrap();
569// let font_id = cx
570// .font_cache()
571// .select_font(family_id, &Default::default())
572// .unwrap();
573// let font_size = 14.0;
574// let buffer = MultiBuffer::build_simple(input_text, cx);
575// let buffer_snapshot = buffer.read(cx).snapshot(cx);
576// let display_map =
577// cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
578
579// // add all kinds of inlays between two word boundaries: we should be able to cross them all, when looking for another boundary
580// let mut id = 0;
581// let inlays = (0..buffer_snapshot.len())
582// .map(|offset| {
583// [
584// Inlay {
585// id: InlayId::Suggestion(post_inc(&mut id)),
586// position: buffer_snapshot.anchor_at(offset, Bias::Left),
587// text: format!("test").into(),
588// },
589// Inlay {
590// id: InlayId::Suggestion(post_inc(&mut id)),
591// position: buffer_snapshot.anchor_at(offset, Bias::Right),
592// text: format!("test").into(),
593// },
594// Inlay {
595// id: InlayId::Hint(post_inc(&mut id)),
596// position: buffer_snapshot.anchor_at(offset, Bias::Left),
597// text: format!("test").into(),
598// },
599// Inlay {
600// id: InlayId::Hint(post_inc(&mut id)),
601// position: buffer_snapshot.anchor_at(offset, Bias::Right),
602// text: format!("test").into(),
603// },
604// ]
605// })
606// .flatten()
607// .collect();
608// let snapshot = display_map.update(cx, |map, cx| {
609// map.splice_inlays(Vec::new(), inlays, cx);
610// map.snapshot(cx)
611// });
612
613// assert_eq!(
614// find_preceding_boundary(
615// &snapshot,
616// buffer_snapshot.len().to_display_point(&snapshot),
617// FindRange::MultiLine,
618// |left, _| left == 'e',
619// ),
620// snapshot
621// .buffer_snapshot
622// .offset_to_point(5)
623// .to_display_point(&snapshot),
624// "Should not stop at inlays when looking for boundaries"
625// );
626// }
627
628// #[gpui::test]
629// fn test_next_word_end(cx: &mut gpui::AppContext) {
630// init_test(cx);
631
632// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
633// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
634// assert_eq!(
635// next_word_end(&snapshot, display_points[0]),
636// display_points[1]
637// );
638// }
639
640// assert("\nˇ loremˇ", cx);
641// assert(" ˇloremˇ", cx);
642// assert(" lorˇemˇ", cx);
643// assert(" loremˇ ˇ\nipsum\n", cx);
644// assert("\nˇ\nˇ\n\n", cx);
645// assert("loremˇ ipsumˇ ", cx);
646// assert("loremˇ-ˇipsum", cx);
647// assert("loremˇ#$@-ˇipsum", cx);
648// assert("loremˇ_ipsumˇ", cx);
649// assert(" ˇbcΔˇ", cx);
650// assert(" abˇ——ˇcd", cx);
651// }
652
653// #[gpui::test]
654// fn test_next_subword_end(cx: &mut gpui::AppContext) {
655// init_test(cx);
656
657// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
658// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
659// assert_eq!(
660// next_subword_end(&snapshot, display_points[0]),
661// display_points[1]
662// );
663// }
664
665// // Subword boundaries are respected
666// assert("loˇremˇ_ipsum", cx);
667// assert("ˇloremˇ_ipsum", cx);
668// assert("loremˇ_ipsumˇ", cx);
669// assert("loremˇ_ipsumˇ_dolor", cx);
670// assert("loˇremˇIpsum", cx);
671// assert("loremˇIpsumˇDolor", cx);
672
673// // Word boundaries are still respected
674// assert("\nˇ loremˇ", cx);
675// assert(" ˇloremˇ", cx);
676// assert(" lorˇemˇ", cx);
677// assert(" loremˇ ˇ\nipsum\n", cx);
678// assert("\nˇ\nˇ\n\n", cx);
679// assert("loremˇ ipsumˇ ", cx);
680// assert("loremˇ-ˇipsum", cx);
681// assert("loremˇ#$@-ˇipsum", cx);
682// assert("loremˇ_ipsumˇ", cx);
683// assert(" ˇbcˇΔ", cx);
684// assert(" abˇ——ˇcd", cx);
685// }
686
687// #[gpui::test]
688// fn test_find_boundary(cx: &mut gpui::AppContext) {
689// init_test(cx);
690
691// fn assert(
692// marked_text: &str,
693// cx: &mut gpui::AppContext,
694// is_boundary: impl FnMut(char, char) -> bool,
695// ) {
696// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
697// assert_eq!(
698// find_boundary(
699// &snapshot,
700// display_points[0],
701// FindRange::MultiLine,
702// is_boundary
703// ),
704// display_points[1]
705// );
706// }
707
708// assert("abcˇdef\ngh\nijˇk", cx, |left, right| {
709// left == 'j' && right == 'k'
710// });
711// assert("abˇcdef\ngh\nˇijk", cx, |left, right| {
712// left == '\n' && right == 'i'
713// });
714// let mut line_count = 0;
715// assert("abcˇdef\ngh\nˇijk", cx, |left, _| {
716// if left == '\n' {
717// line_count += 1;
718// line_count == 2
719// } else {
720// false
721// }
722// });
723// }
724
725// #[gpui::test]
726// fn test_surrounding_word(cx: &mut gpui::AppContext) {
727// init_test(cx);
728
729// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
730// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
731// assert_eq!(
732// surrounding_word(&snapshot, display_points[1]),
733// display_points[0]..display_points[2],
734// "{}",
735// marked_text.to_string()
736// );
737// }
738
739// assert("ˇˇloremˇ ipsum", cx);
740// assert("ˇloˇremˇ ipsum", cx);
741// assert("ˇloremˇˇ ipsum", cx);
742// assert("loremˇ ˇ ˇipsum", cx);
743// assert("lorem\nˇˇˇ\nipsum", cx);
744// assert("lorem\nˇˇipsumˇ", cx);
745// assert("loremˇ,ˇˇ ipsum", cx);
746// assert("ˇloremˇˇ, ipsum", cx);
747// }
748
749// #[gpui::test]
750// async fn test_move_up_and_down_with_excerpts(cx: &mut gpui::TestAppContext) {
751// cx.update(|cx| {
752// init_test(cx);
753// });
754
755// let mut cx = EditorTestContext::new(cx).await;
756// let editor = cx.editor.clone();
757// let window = cx.window.clone();
758// cx.update_window(window, |cx| {
759// let text_layout_details =
760// editor.read_with(cx, |editor, cx| editor.text_layout_details(cx));
761
762// let family_id = cx
763// .font_cache()
764// .load_family(&["Helvetica"], &Default::default())
765// .unwrap();
766// let font_id = cx
767// .font_cache()
768// .select_font(family_id, &Default::default())
769// .unwrap();
770
771// let buffer =
772// cx.add_model(|cx| Buffer::new(0, cx.model_id() as u64, "abc\ndefg\nhijkl\nmn"));
773// let multibuffer = cx.add_model(|cx| {
774// let mut multibuffer = MultiBuffer::new(0);
775// multibuffer.push_excerpts(
776// buffer.clone(),
777// [
778// ExcerptRange {
779// context: Point::new(0, 0)..Point::new(1, 4),
780// primary: None,
781// },
782// ExcerptRange {
783// context: Point::new(2, 0)..Point::new(3, 2),
784// primary: None,
785// },
786// ],
787// cx,
788// );
789// multibuffer
790// });
791// let display_map =
792// cx.add_model(|cx| DisplayMap::new(multibuffer, font_id, 14.0, None, 2, 2, cx));
793// let snapshot = display_map.update(cx, |map, cx| map.snapshot(cx));
794
795// assert_eq!(snapshot.text(), "\n\nabc\ndefg\n\n\nhijkl\nmn");
796
797// let col_2_x = snapshot.x_for_point(DisplayPoint::new(2, 2), &text_layout_details);
798
799// // Can't move up into the first excerpt's header
800// assert_eq!(
801// up(
802// &snapshot,
803// DisplayPoint::new(2, 2),
804// SelectionGoal::HorizontalPosition(col_2_x),
805// false,
806// &text_layout_details
807// ),
808// (
809// DisplayPoint::new(2, 0),
810// SelectionGoal::HorizontalPosition(0.0)
811// ),
812// );
813// assert_eq!(
814// up(
815// &snapshot,
816// DisplayPoint::new(2, 0),
817// SelectionGoal::None,
818// false,
819// &text_layout_details
820// ),
821// (
822// DisplayPoint::new(2, 0),
823// SelectionGoal::HorizontalPosition(0.0)
824// ),
825// );
826
827// let col_4_x = snapshot.x_for_point(DisplayPoint::new(3, 4), &text_layout_details);
828
829// // Move up and down within first excerpt
830// assert_eq!(
831// up(
832// &snapshot,
833// DisplayPoint::new(3, 4),
834// SelectionGoal::HorizontalPosition(col_4_x),
835// false,
836// &text_layout_details
837// ),
838// (
839// DisplayPoint::new(2, 3),
840// SelectionGoal::HorizontalPosition(col_4_x)
841// ),
842// );
843// assert_eq!(
844// down(
845// &snapshot,
846// DisplayPoint::new(2, 3),
847// SelectionGoal::HorizontalPosition(col_4_x),
848// false,
849// &text_layout_details
850// ),
851// (
852// DisplayPoint::new(3, 4),
853// SelectionGoal::HorizontalPosition(col_4_x)
854// ),
855// );
856
857// let col_5_x = snapshot.x_for_point(DisplayPoint::new(6, 5), &text_layout_details);
858
859// // Move up and down across second excerpt's header
860// assert_eq!(
861// up(
862// &snapshot,
863// DisplayPoint::new(6, 5),
864// SelectionGoal::HorizontalPosition(col_5_x),
865// false,
866// &text_layout_details
867// ),
868// (
869// DisplayPoint::new(3, 4),
870// SelectionGoal::HorizontalPosition(col_5_x)
871// ),
872// );
873// assert_eq!(
874// down(
875// &snapshot,
876// DisplayPoint::new(3, 4),
877// SelectionGoal::HorizontalPosition(col_5_x),
878// false,
879// &text_layout_details
880// ),
881// (
882// DisplayPoint::new(6, 5),
883// SelectionGoal::HorizontalPosition(col_5_x)
884// ),
885// );
886
887// let max_point_x = snapshot.x_for_point(DisplayPoint::new(7, 2), &text_layout_details);
888
889// // Can't move down off the end
890// assert_eq!(
891// down(
892// &snapshot,
893// DisplayPoint::new(7, 0),
894// SelectionGoal::HorizontalPosition(0.0),
895// false,
896// &text_layout_details
897// ),
898// (
899// DisplayPoint::new(7, 2),
900// SelectionGoal::HorizontalPosition(max_point_x)
901// ),
902// );
903// assert_eq!(
904// down(
905// &snapshot,
906// DisplayPoint::new(7, 2),
907// SelectionGoal::HorizontalPosition(max_point_x),
908// false,
909// &text_layout_details
910// ),
911// (
912// DisplayPoint::new(7, 2),
913// SelectionGoal::HorizontalPosition(max_point_x)
914// ),
915// );
916// });
917// }
918
919// fn init_test(cx: &mut gpui::AppContext) {
920// cx.set_global(SettingsStore::test(cx));
921// theme::init(cx);
922// language::init(cx);
923// crate::init(cx);
924// Project::init_settings(cx);
925// }
926// }