1use super::{Bias, DisplayPoint, DisplaySnapshot, SelectionGoal, ToDisplayPoint};
2use crate::{char_kind, CharKind, EditorStyle, ToOffset, ToPoint};
3use gpui::{px, Pixels, TextSystem};
4use language::Point;
5use serde::de::IntoDeserializer;
6use std::{ops::Range, sync::Arc};
7
8#[derive(Debug, PartialEq)]
9pub enum FindRange {
10 SingleLine,
11 MultiLine,
12}
13
14/// TextLayoutDetails encompasses everything we need to move vertically
15/// taking into account variable width characters.
16pub struct TextLayoutDetails {
17 pub text_system: Arc<TextSystem>,
18 pub editor_style: EditorStyle,
19 pub rem_size: Pixels,
20}
21
22pub fn left(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
23 if point.column() > 0 {
24 *point.column_mut() -= 1;
25 } else if point.row() > 0 {
26 *point.row_mut() -= 1;
27 *point.column_mut() = map.line_len(point.row());
28 }
29 map.clip_point(point, Bias::Left)
30}
31
32pub fn saturating_left(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
33 if point.column() > 0 {
34 *point.column_mut() -= 1;
35 }
36 map.clip_point(point, Bias::Left)
37}
38
39pub fn right(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
40 let max_column = map.line_len(point.row());
41 if point.column() < max_column {
42 *point.column_mut() += 1;
43 } else if point.row() < map.max_point().row() {
44 *point.row_mut() += 1;
45 *point.column_mut() = 0;
46 }
47 map.clip_point(point, Bias::Right)
48}
49
50pub fn saturating_right(map: &DisplaySnapshot, mut point: DisplayPoint) -> DisplayPoint {
51 *point.column_mut() += 1;
52 map.clip_point(point, Bias::Right)
53}
54
55pub fn up(
56 map: &DisplaySnapshot,
57 start: DisplayPoint,
58 goal: SelectionGoal,
59 preserve_column_at_start: bool,
60 text_layout_details: &TextLayoutDetails,
61) -> (DisplayPoint, SelectionGoal) {
62 up_by_rows(
63 map,
64 start,
65 1,
66 goal,
67 preserve_column_at_start,
68 text_layout_details,
69 )
70}
71
72pub fn down(
73 map: &DisplaySnapshot,
74 start: DisplayPoint,
75 goal: SelectionGoal,
76 preserve_column_at_end: bool,
77 text_layout_details: &TextLayoutDetails,
78) -> (DisplayPoint, SelectionGoal) {
79 down_by_rows(
80 map,
81 start,
82 1,
83 goal,
84 preserve_column_at_end,
85 text_layout_details,
86 )
87}
88
89pub fn up_by_rows(
90 map: &DisplaySnapshot,
91 start: DisplayPoint,
92 row_count: u32,
93 goal: SelectionGoal,
94 preserve_column_at_start: bool,
95 text_layout_details: &TextLayoutDetails,
96) -> (DisplayPoint, SelectionGoal) {
97 let mut goal_x = match goal {
98 SelectionGoal::HorizontalPosition(x) => x.into(), // todo!("Can the fields in SelectionGoal by Pixels? We should extract a geometry crate and depend on that.")
99 SelectionGoal::WrappedHorizontalPosition((_, x)) => x.into(),
100 SelectionGoal::HorizontalRange { end, .. } => end.into(),
101 _ => map.x_for_point(start, text_layout_details),
102 };
103
104 let prev_row = start.row().saturating_sub(row_count);
105 let mut point = map.clip_point(
106 DisplayPoint::new(prev_row, map.line_len(prev_row)),
107 Bias::Left,
108 );
109 if point.row() < start.row() {
110 *point.column_mut() = map.column_for_x(point.row(), goal_x, text_layout_details)
111 } else if preserve_column_at_start {
112 return (start, goal);
113 } else {
114 point = DisplayPoint::new(0, 0);
115 goal_x = px(0.);
116 }
117
118 let mut clipped_point = map.clip_point(point, Bias::Left);
119 if clipped_point.row() < point.row() {
120 clipped_point = map.clip_point(point, Bias::Right);
121 }
122 (
123 clipped_point,
124 SelectionGoal::HorizontalPosition(goal_x.into()),
125 )
126}
127
128pub fn down_by_rows(
129 map: &DisplaySnapshot,
130 start: DisplayPoint,
131 row_count: u32,
132 goal: SelectionGoal,
133 preserve_column_at_end: bool,
134 text_layout_details: &TextLayoutDetails,
135) -> (DisplayPoint, SelectionGoal) {
136 let mut goal_x = match goal {
137 SelectionGoal::HorizontalPosition(x) => x.into(),
138 SelectionGoal::WrappedHorizontalPosition((_, x)) => x.into(),
139 SelectionGoal::HorizontalRange { end, .. } => end.into(),
140 _ => map.x_for_point(start, text_layout_details),
141 };
142
143 let new_row = start.row() + row_count;
144 let mut point = map.clip_point(DisplayPoint::new(new_row, 0), Bias::Right);
145 if point.row() > start.row() {
146 *point.column_mut() = map.column_for_x(point.row(), goal_x, text_layout_details)
147 } else if preserve_column_at_end {
148 return (start, goal);
149 } else {
150 point = map.max_point();
151 goal_x = map.x_for_point(point, text_layout_details)
152 }
153
154 let mut clipped_point = map.clip_point(point, Bias::Right);
155 if clipped_point.row() > point.row() {
156 clipped_point = map.clip_point(point, Bias::Left);
157 }
158 (
159 clipped_point,
160 SelectionGoal::HorizontalPosition(goal_x.into()),
161 )
162}
163
164pub fn line_beginning(
165 map: &DisplaySnapshot,
166 display_point: DisplayPoint,
167 stop_at_soft_boundaries: bool,
168) -> DisplayPoint {
169 let point = display_point.to_point(map);
170 let soft_line_start = map.clip_point(DisplayPoint::new(display_point.row(), 0), Bias::Right);
171 let line_start = map.prev_line_boundary(point).1;
172
173 if stop_at_soft_boundaries && display_point != soft_line_start {
174 soft_line_start
175 } else {
176 line_start
177 }
178}
179
180pub fn indented_line_beginning(
181 map: &DisplaySnapshot,
182 display_point: DisplayPoint,
183 stop_at_soft_boundaries: bool,
184) -> DisplayPoint {
185 let point = display_point.to_point(map);
186 let soft_line_start = map.clip_point(DisplayPoint::new(display_point.row(), 0), Bias::Right);
187 let indent_start = Point::new(
188 point.row,
189 map.buffer_snapshot.indent_size_for_line(point.row).len,
190 )
191 .to_display_point(map);
192 let line_start = map.prev_line_boundary(point).1;
193
194 if stop_at_soft_boundaries && soft_line_start > indent_start && display_point != soft_line_start
195 {
196 soft_line_start
197 } else if stop_at_soft_boundaries && display_point != indent_start {
198 indent_start
199 } else {
200 line_start
201 }
202}
203
204pub fn line_end(
205 map: &DisplaySnapshot,
206 display_point: DisplayPoint,
207 stop_at_soft_boundaries: bool,
208) -> DisplayPoint {
209 let soft_line_end = map.clip_point(
210 DisplayPoint::new(display_point.row(), map.line_len(display_point.row())),
211 Bias::Left,
212 );
213 if stop_at_soft_boundaries && display_point != soft_line_end {
214 soft_line_end
215 } else {
216 map.next_line_boundary(display_point.to_point(map)).1
217 }
218}
219
220pub fn previous_word_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
221 let raw_point = point.to_point(map);
222 let scope = map.buffer_snapshot.language_scope_at(raw_point);
223
224 find_preceding_boundary(map, point, FindRange::MultiLine, |left, right| {
225 (char_kind(&scope, left) != char_kind(&scope, right) && !right.is_whitespace())
226 || left == '\n'
227 })
228}
229
230pub fn previous_subword_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
231 let raw_point = point.to_point(map);
232 let scope = map.buffer_snapshot.language_scope_at(raw_point);
233
234 find_preceding_boundary(map, point, FindRange::MultiLine, |left, right| {
235 let is_word_start =
236 char_kind(&scope, left) != char_kind(&scope, right) && !right.is_whitespace();
237 let is_subword_start =
238 left == '_' && right != '_' || left.is_lowercase() && right.is_uppercase();
239 is_word_start || is_subword_start || left == '\n'
240 })
241}
242
243pub fn next_word_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
244 let raw_point = point.to_point(map);
245 let scope = map.buffer_snapshot.language_scope_at(raw_point);
246
247 find_boundary(map, point, FindRange::MultiLine, |left, right| {
248 (char_kind(&scope, left) != char_kind(&scope, right) && !left.is_whitespace())
249 || right == '\n'
250 })
251}
252
253pub fn next_subword_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
254 let raw_point = point.to_point(map);
255 let scope = map.buffer_snapshot.language_scope_at(raw_point);
256
257 find_boundary(map, point, FindRange::MultiLine, |left, right| {
258 let is_word_end =
259 (char_kind(&scope, left) != char_kind(&scope, right)) && !left.is_whitespace();
260 let is_subword_end =
261 left != '_' && right == '_' || left.is_lowercase() && right.is_uppercase();
262 is_word_end || is_subword_end || right == '\n'
263 })
264}
265
266pub fn start_of_paragraph(
267 map: &DisplaySnapshot,
268 display_point: DisplayPoint,
269 mut count: usize,
270) -> DisplayPoint {
271 let point = display_point.to_point(map);
272 if point.row == 0 {
273 return DisplayPoint::zero();
274 }
275
276 let mut found_non_blank_line = false;
277 for row in (0..point.row + 1).rev() {
278 let blank = map.buffer_snapshot.is_line_blank(row);
279 if found_non_blank_line && blank {
280 if count <= 1 {
281 return Point::new(row, 0).to_display_point(map);
282 }
283 count -= 1;
284 found_non_blank_line = false;
285 }
286
287 found_non_blank_line |= !blank;
288 }
289
290 DisplayPoint::zero()
291}
292
293pub fn end_of_paragraph(
294 map: &DisplaySnapshot,
295 display_point: DisplayPoint,
296 mut count: usize,
297) -> DisplayPoint {
298 let point = display_point.to_point(map);
299 if point.row == map.max_buffer_row() {
300 return map.max_point();
301 }
302
303 let mut found_non_blank_line = false;
304 for row in point.row..map.max_buffer_row() + 1 {
305 let blank = map.buffer_snapshot.is_line_blank(row);
306 if found_non_blank_line && blank {
307 if count <= 1 {
308 return Point::new(row, 0).to_display_point(map);
309 }
310 count -= 1;
311 found_non_blank_line = false;
312 }
313
314 found_non_blank_line |= !blank;
315 }
316
317 map.max_point()
318}
319
320/// Scans for a boundary preceding the given start point `from` until a boundary is found,
321/// indicated by the given predicate returning true.
322/// The predicate is called with the character to the left and right of the candidate boundary location.
323/// 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.
324pub fn find_preceding_boundary(
325 map: &DisplaySnapshot,
326 from: DisplayPoint,
327 find_range: FindRange,
328 mut is_boundary: impl FnMut(char, char) -> bool,
329) -> DisplayPoint {
330 let mut prev_ch = None;
331 let mut offset = from.to_point(map).to_offset(&map.buffer_snapshot);
332
333 for ch in map.buffer_snapshot.reversed_chars_at(offset) {
334 if find_range == FindRange::SingleLine && ch == '\n' {
335 break;
336 }
337 if let Some(prev_ch) = prev_ch {
338 if is_boundary(ch, prev_ch) {
339 break;
340 }
341 }
342
343 offset -= ch.len_utf8();
344 prev_ch = Some(ch);
345 }
346
347 map.clip_point(offset.to_display_point(map), Bias::Left)
348}
349
350/// Scans for a boundary following the given start point until a boundary is found, indicated by the
351/// given predicate returning true. The predicate is called with the character to the left and right
352/// of the candidate boundary location, and will be called with `\n` characters indicating the start
353/// or end of a line.
354pub fn find_boundary(
355 map: &DisplaySnapshot,
356 from: DisplayPoint,
357 find_range: FindRange,
358 mut is_boundary: impl FnMut(char, char) -> bool,
359) -> DisplayPoint {
360 let mut offset = from.to_offset(&map, Bias::Right);
361 let mut prev_ch = None;
362
363 for ch in map.buffer_snapshot.chars_at(offset) {
364 if find_range == FindRange::SingleLine && ch == '\n' {
365 break;
366 }
367 if let Some(prev_ch) = prev_ch {
368 if is_boundary(prev_ch, ch) {
369 break;
370 }
371 }
372
373 offset += ch.len_utf8();
374 prev_ch = Some(ch);
375 }
376 map.clip_point(offset.to_display_point(map), Bias::Right)
377}
378
379pub fn chars_after(
380 map: &DisplaySnapshot,
381 mut offset: usize,
382) -> impl Iterator<Item = (char, Range<usize>)> + '_ {
383 map.buffer_snapshot.chars_at(offset).map(move |ch| {
384 let before = offset;
385 offset = offset + ch.len_utf8();
386 (ch, before..offset)
387 })
388}
389
390pub fn chars_before(
391 map: &DisplaySnapshot,
392 mut offset: usize,
393) -> impl Iterator<Item = (char, Range<usize>)> + '_ {
394 map.buffer_snapshot
395 .reversed_chars_at(offset)
396 .map(move |ch| {
397 let after = offset;
398 offset = offset - ch.len_utf8();
399 (ch, offset..after)
400 })
401}
402
403pub fn is_inside_word(map: &DisplaySnapshot, point: DisplayPoint) -> bool {
404 let raw_point = point.to_point(map);
405 let scope = map.buffer_snapshot.language_scope_at(raw_point);
406 let ix = map.clip_point(point, Bias::Left).to_offset(map, Bias::Left);
407 let text = &map.buffer_snapshot;
408 let next_char_kind = text.chars_at(ix).next().map(|c| char_kind(&scope, c));
409 let prev_char_kind = text
410 .reversed_chars_at(ix)
411 .next()
412 .map(|c| char_kind(&scope, c));
413 prev_char_kind.zip(next_char_kind) == Some((CharKind::Word, CharKind::Word))
414}
415
416pub fn surrounding_word(map: &DisplaySnapshot, position: DisplayPoint) -> Range<DisplayPoint> {
417 let position = map
418 .clip_point(position, Bias::Left)
419 .to_offset(map, Bias::Left);
420 let (range, _) = map.buffer_snapshot.surrounding_word(position);
421 let start = range
422 .start
423 .to_point(&map.buffer_snapshot)
424 .to_display_point(map);
425 let end = range
426 .end
427 .to_point(&map.buffer_snapshot)
428 .to_display_point(map);
429 start..end
430}
431
432pub fn split_display_range_by_lines(
433 map: &DisplaySnapshot,
434 range: Range<DisplayPoint>,
435) -> Vec<Range<DisplayPoint>> {
436 let mut result = Vec::new();
437
438 let mut start = range.start;
439 // Loop over all the covered rows until the one containing the range end
440 for row in range.start.row()..range.end.row() {
441 let row_end_column = map.line_len(row);
442 let end = map.clip_point(DisplayPoint::new(row, row_end_column), Bias::Left);
443 if start != end {
444 result.push(start..end);
445 }
446 start = map.clip_point(DisplayPoint::new(row + 1, 0), Bias::Left);
447 }
448
449 // Add the final range from the start of the last end to the original range end.
450 result.push(start..range.end);
451
452 result
453}
454
455// #[cfg(test)]
456// mod tests {
457// use super::*;
458// use crate::{
459// display_map::Inlay,
460// test::{},
461// Buffer, DisplayMap, ExcerptRange, InlayId, MultiBuffer,
462// };
463// use project::Project;
464// use settings::SettingsStore;
465// use util::post_inc;
466
467// #[gpui::test]
468// fn test_previous_word_start(cx: &mut gpui::AppContext) {
469// init_test(cx);
470
471// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
472// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
473// assert_eq!(
474// previous_word_start(&snapshot, display_points[1]),
475// display_points[0]
476// );
477// }
478
479// assert("\nˇ ˇlorem", cx);
480// assert("ˇ\nˇ lorem", cx);
481// assert(" ˇloremˇ", cx);
482// assert("ˇ ˇlorem", cx);
483// assert(" ˇlorˇem", cx);
484// assert("\nlorem\nˇ ˇipsum", cx);
485// assert("\n\nˇ\nˇ", cx);
486// assert(" ˇlorem ˇipsum", cx);
487// assert("loremˇ-ˇipsum", cx);
488// assert("loremˇ-#$@ˇipsum", cx);
489// assert("ˇlorem_ˇipsum", cx);
490// assert(" ˇdefγˇ", cx);
491// assert(" ˇbcΔˇ", cx);
492// assert(" abˇ——ˇcd", cx);
493// }
494
495// #[gpui::test]
496// fn test_previous_subword_start(cx: &mut gpui::AppContext) {
497// init_test(cx);
498
499// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
500// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
501// assert_eq!(
502// previous_subword_start(&snapshot, display_points[1]),
503// display_points[0]
504// );
505// }
506
507// // Subword boundaries are respected
508// assert("lorem_ˇipˇsum", cx);
509// assert("lorem_ˇipsumˇ", cx);
510// assert("ˇlorem_ˇipsum", cx);
511// assert("lorem_ˇipsum_ˇdolor", cx);
512// assert("loremˇIpˇsum", cx);
513// assert("loremˇIpsumˇ", cx);
514
515// // Word boundaries are still respected
516// assert("\nˇ ˇlorem", cx);
517// assert(" ˇloremˇ", cx);
518// assert(" ˇlorˇem", cx);
519// assert("\nlorem\nˇ ˇipsum", cx);
520// assert("\n\nˇ\nˇ", cx);
521// assert(" ˇlorem ˇipsum", cx);
522// assert("loremˇ-ˇipsum", cx);
523// assert("loremˇ-#$@ˇipsum", cx);
524// assert(" ˇdefγˇ", cx);
525// assert(" bcˇΔˇ", cx);
526// assert(" ˇbcδˇ", cx);
527// assert(" abˇ——ˇcd", cx);
528// }
529
530// #[gpui::test]
531// fn test_find_preceding_boundary(cx: &mut gpui::AppContext) {
532// init_test(cx);
533
534// fn assert(
535// marked_text: &str,
536// cx: &mut gpui::AppContext,
537// is_boundary: impl FnMut(char, char) -> bool,
538// ) {
539// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
540// assert_eq!(
541// find_preceding_boundary(
542// &snapshot,
543// display_points[1],
544// FindRange::MultiLine,
545// is_boundary
546// ),
547// display_points[0]
548// );
549// }
550
551// assert("abcˇdef\ngh\nijˇk", cx, |left, right| {
552// left == 'c' && right == 'd'
553// });
554// assert("abcdef\nˇgh\nijˇk", cx, |left, right| {
555// left == '\n' && right == 'g'
556// });
557// let mut line_count = 0;
558// assert("abcdef\nˇgh\nijˇk", cx, |left, _| {
559// if left == '\n' {
560// line_count += 1;
561// line_count == 2
562// } else {
563// false
564// }
565// });
566// }
567
568// #[gpui::test]
569// fn test_find_preceding_boundary_with_inlays(cx: &mut gpui::AppContext) {
570// init_test(cx);
571
572// let input_text = "abcdefghijklmnopqrstuvwxys";
573// let family_id = cx
574// .font_cache()
575// .load_family(&["Helvetica"], &Default::default())
576// .unwrap();
577// let font_id = cx
578// .font_cache()
579// .select_font(family_id, &Default::default())
580// .unwrap();
581// let font_size = 14.0;
582// let buffer = MultiBuffer::build_simple(input_text, cx);
583// let buffer_snapshot = buffer.read(cx).snapshot(cx);
584// let display_map =
585// cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
586
587// // add all kinds of inlays between two word boundaries: we should be able to cross them all, when looking for another boundary
588// let mut id = 0;
589// let inlays = (0..buffer_snapshot.len())
590// .map(|offset| {
591// [
592// Inlay {
593// id: InlayId::Suggestion(post_inc(&mut id)),
594// position: buffer_snapshot.anchor_at(offset, Bias::Left),
595// text: format!("test").into(),
596// },
597// Inlay {
598// id: InlayId::Suggestion(post_inc(&mut id)),
599// position: buffer_snapshot.anchor_at(offset, Bias::Right),
600// text: format!("test").into(),
601// },
602// Inlay {
603// id: InlayId::Hint(post_inc(&mut id)),
604// position: buffer_snapshot.anchor_at(offset, Bias::Left),
605// text: format!("test").into(),
606// },
607// Inlay {
608// id: InlayId::Hint(post_inc(&mut id)),
609// position: buffer_snapshot.anchor_at(offset, Bias::Right),
610// text: format!("test").into(),
611// },
612// ]
613// })
614// .flatten()
615// .collect();
616// let snapshot = display_map.update(cx, |map, cx| {
617// map.splice_inlays(Vec::new(), inlays, cx);
618// map.snapshot(cx)
619// });
620
621// assert_eq!(
622// find_preceding_boundary(
623// &snapshot,
624// buffer_snapshot.len().to_display_point(&snapshot),
625// FindRange::MultiLine,
626// |left, _| left == 'e',
627// ),
628// snapshot
629// .buffer_snapshot
630// .offset_to_point(5)
631// .to_display_point(&snapshot),
632// "Should not stop at inlays when looking for boundaries"
633// );
634// }
635
636// #[gpui::test]
637// fn test_next_word_end(cx: &mut gpui::AppContext) {
638// init_test(cx);
639
640// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
641// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
642// assert_eq!(
643// next_word_end(&snapshot, display_points[0]),
644// display_points[1]
645// );
646// }
647
648// assert("\nˇ loremˇ", cx);
649// assert(" ˇloremˇ", cx);
650// assert(" lorˇemˇ", cx);
651// assert(" loremˇ ˇ\nipsum\n", cx);
652// assert("\nˇ\nˇ\n\n", cx);
653// assert("loremˇ ipsumˇ ", cx);
654// assert("loremˇ-ˇipsum", cx);
655// assert("loremˇ#$@-ˇipsum", cx);
656// assert("loremˇ_ipsumˇ", cx);
657// assert(" ˇbcΔˇ", cx);
658// assert(" abˇ——ˇcd", cx);
659// }
660
661// #[gpui::test]
662// fn test_next_subword_end(cx: &mut gpui::AppContext) {
663// init_test(cx);
664
665// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
666// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
667// assert_eq!(
668// next_subword_end(&snapshot, display_points[0]),
669// display_points[1]
670// );
671// }
672
673// // Subword boundaries are respected
674// assert("loˇremˇ_ipsum", cx);
675// assert("ˇloremˇ_ipsum", cx);
676// assert("loremˇ_ipsumˇ", cx);
677// assert("loremˇ_ipsumˇ_dolor", cx);
678// assert("loˇremˇIpsum", cx);
679// assert("loremˇIpsumˇDolor", cx);
680
681// // Word boundaries are still respected
682// assert("\nˇ loremˇ", cx);
683// assert(" ˇloremˇ", cx);
684// assert(" lorˇemˇ", cx);
685// assert(" loremˇ ˇ\nipsum\n", cx);
686// assert("\nˇ\nˇ\n\n", cx);
687// assert("loremˇ ipsumˇ ", cx);
688// assert("loremˇ-ˇipsum", cx);
689// assert("loremˇ#$@-ˇipsum", cx);
690// assert("loremˇ_ipsumˇ", cx);
691// assert(" ˇbcˇΔ", cx);
692// assert(" abˇ——ˇcd", cx);
693// }
694
695// #[gpui::test]
696// fn test_find_boundary(cx: &mut gpui::AppContext) {
697// init_test(cx);
698
699// fn assert(
700// marked_text: &str,
701// cx: &mut gpui::AppContext,
702// is_boundary: impl FnMut(char, char) -> bool,
703// ) {
704// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
705// assert_eq!(
706// find_boundary(
707// &snapshot,
708// display_points[0],
709// FindRange::MultiLine,
710// is_boundary
711// ),
712// display_points[1]
713// );
714// }
715
716// assert("abcˇdef\ngh\nijˇk", cx, |left, right| {
717// left == 'j' && right == 'k'
718// });
719// assert("abˇcdef\ngh\nˇijk", cx, |left, right| {
720// left == '\n' && right == 'i'
721// });
722// let mut line_count = 0;
723// assert("abcˇdef\ngh\nˇijk", cx, |left, _| {
724// if left == '\n' {
725// line_count += 1;
726// line_count == 2
727// } else {
728// false
729// }
730// });
731// }
732
733// #[gpui::test]
734// fn test_surrounding_word(cx: &mut gpui::AppContext) {
735// init_test(cx);
736
737// fn assert(marked_text: &str, cx: &mut gpui::AppContext) {
738// let (snapshot, display_points) = marked_display_snapshot(marked_text, cx);
739// assert_eq!(
740// surrounding_word(&snapshot, display_points[1]),
741// display_points[0]..display_points[2],
742// "{}",
743// marked_text.to_string()
744// );
745// }
746
747// assert("ˇˇloremˇ ipsum", cx);
748// assert("ˇloˇremˇ ipsum", cx);
749// assert("ˇloremˇˇ ipsum", cx);
750// assert("loremˇ ˇ ˇipsum", cx);
751// assert("lorem\nˇˇˇ\nipsum", cx);
752// assert("lorem\nˇˇipsumˇ", cx);
753// assert("loremˇ,ˇˇ ipsum", cx);
754// assert("ˇloremˇˇ, ipsum", cx);
755// }
756
757// #[gpui::test]
758// async fn test_move_up_and_down_with_excerpts(cx: &mut gpui::TestAppContext) {
759// cx.update(|cx| {
760// init_test(cx);
761// });
762
763// let mut cx = EditorTestContext::new(cx).await;
764// let editor = cx.editor.clone();
765// let window = cx.window.clone();
766// cx.update_window(window, |cx| {
767// let text_layout_details =
768// editor.read_with(cx, |editor, cx| editor.text_layout_details(cx));
769
770// let family_id = cx
771// .font_cache()
772// .load_family(&["Helvetica"], &Default::default())
773// .unwrap();
774// let font_id = cx
775// .font_cache()
776// .select_font(family_id, &Default::default())
777// .unwrap();
778
779// let buffer =
780// cx.add_model(|cx| Buffer::new(0, cx.model_id() as u64, "abc\ndefg\nhijkl\nmn"));
781// let multibuffer = cx.add_model(|cx| {
782// let mut multibuffer = MultiBuffer::new(0);
783// multibuffer.push_excerpts(
784// buffer.clone(),
785// [
786// ExcerptRange {
787// context: Point::new(0, 0)..Point::new(1, 4),
788// primary: None,
789// },
790// ExcerptRange {
791// context: Point::new(2, 0)..Point::new(3, 2),
792// primary: None,
793// },
794// ],
795// cx,
796// );
797// multibuffer
798// });
799// let display_map =
800// cx.add_model(|cx| DisplayMap::new(multibuffer, font_id, 14.0, None, 2, 2, cx));
801// let snapshot = display_map.update(cx, |map, cx| map.snapshot(cx));
802
803// assert_eq!(snapshot.text(), "\n\nabc\ndefg\n\n\nhijkl\nmn");
804
805// let col_2_x = snapshot.x_for_point(DisplayPoint::new(2, 2), &text_layout_details);
806
807// // Can't move up into the first excerpt's header
808// assert_eq!(
809// up(
810// &snapshot,
811// DisplayPoint::new(2, 2),
812// SelectionGoal::HorizontalPosition(col_2_x),
813// false,
814// &text_layout_details
815// ),
816// (
817// DisplayPoint::new(2, 0),
818// SelectionGoal::HorizontalPosition(0.0)
819// ),
820// );
821// assert_eq!(
822// up(
823// &snapshot,
824// DisplayPoint::new(2, 0),
825// SelectionGoal::None,
826// false,
827// &text_layout_details
828// ),
829// (
830// DisplayPoint::new(2, 0),
831// SelectionGoal::HorizontalPosition(0.0)
832// ),
833// );
834
835// let col_4_x = snapshot.x_for_point(DisplayPoint::new(3, 4), &text_layout_details);
836
837// // Move up and down within first excerpt
838// assert_eq!(
839// up(
840// &snapshot,
841// DisplayPoint::new(3, 4),
842// SelectionGoal::HorizontalPosition(col_4_x),
843// false,
844// &text_layout_details
845// ),
846// (
847// DisplayPoint::new(2, 3),
848// SelectionGoal::HorizontalPosition(col_4_x)
849// ),
850// );
851// assert_eq!(
852// down(
853// &snapshot,
854// DisplayPoint::new(2, 3),
855// SelectionGoal::HorizontalPosition(col_4_x),
856// false,
857// &text_layout_details
858// ),
859// (
860// DisplayPoint::new(3, 4),
861// SelectionGoal::HorizontalPosition(col_4_x)
862// ),
863// );
864
865// let col_5_x = snapshot.x_for_point(DisplayPoint::new(6, 5), &text_layout_details);
866
867// // Move up and down across second excerpt's header
868// assert_eq!(
869// up(
870// &snapshot,
871// DisplayPoint::new(6, 5),
872// SelectionGoal::HorizontalPosition(col_5_x),
873// false,
874// &text_layout_details
875// ),
876// (
877// DisplayPoint::new(3, 4),
878// SelectionGoal::HorizontalPosition(col_5_x)
879// ),
880// );
881// assert_eq!(
882// down(
883// &snapshot,
884// DisplayPoint::new(3, 4),
885// SelectionGoal::HorizontalPosition(col_5_x),
886// false,
887// &text_layout_details
888// ),
889// (
890// DisplayPoint::new(6, 5),
891// SelectionGoal::HorizontalPosition(col_5_x)
892// ),
893// );
894
895// let max_point_x = snapshot.x_for_point(DisplayPoint::new(7, 2), &text_layout_details);
896
897// // Can't move down off the end
898// assert_eq!(
899// down(
900// &snapshot,
901// DisplayPoint::new(7, 0),
902// SelectionGoal::HorizontalPosition(0.0),
903// false,
904// &text_layout_details
905// ),
906// (
907// DisplayPoint::new(7, 2),
908// SelectionGoal::HorizontalPosition(max_point_x)
909// ),
910// );
911// assert_eq!(
912// down(
913// &snapshot,
914// DisplayPoint::new(7, 2),
915// SelectionGoal::HorizontalPosition(max_point_x),
916// false,
917// &text_layout_details
918// ),
919// (
920// DisplayPoint::new(7, 2),
921// SelectionGoal::HorizontalPosition(max_point_x)
922// ),
923// );
924// });
925// }
926
927// fn init_test(cx: &mut gpui::AppContext) {
928// cx.set_global(SettingsStore::test(cx));
929// theme::init(cx);
930// language::init(cx);
931// crate::init(cx);
932// Project::init_settings(cx);
933// }
934// }