1use super::*;
2use gpui::{ModelHandle, MutableAppContext};
3use std::{
4 cell::RefCell,
5 iter::FromIterator,
6 ops::Range,
7 rc::Rc,
8 time::{Duration, Instant},
9};
10use unindent::Unindent as _;
11
12#[cfg(test)]
13#[ctor::ctor]
14fn init_logger() {
15 // std::env::set_var("RUST_LOG", "info");
16 env_logger::init();
17}
18
19#[test]
20fn test_select_language() {
21 let registry = LanguageRegistry {
22 languages: vec![
23 Arc::new(Language::new(
24 LanguageConfig {
25 name: "Rust".to_string(),
26 path_suffixes: vec!["rs".to_string()],
27 ..Default::default()
28 },
29 Some(tree_sitter_rust::language()),
30 )),
31 Arc::new(Language::new(
32 LanguageConfig {
33 name: "Make".to_string(),
34 path_suffixes: vec!["Makefile".to_string(), "mk".to_string()],
35 ..Default::default()
36 },
37 Some(tree_sitter_rust::language()),
38 )),
39 ],
40 };
41
42 // matching file extension
43 assert_eq!(
44 registry.select_language("zed/lib.rs").map(|l| l.name()),
45 Some("Rust")
46 );
47 assert_eq!(
48 registry.select_language("zed/lib.mk").map(|l| l.name()),
49 Some("Make")
50 );
51
52 // matching filename
53 assert_eq!(
54 registry.select_language("zed/Makefile").map(|l| l.name()),
55 Some("Make")
56 );
57
58 // matching suffix that is not the full file extension or filename
59 assert_eq!(registry.select_language("zed/cars").map(|l| l.name()), None);
60 assert_eq!(
61 registry.select_language("zed/a.cars").map(|l| l.name()),
62 None
63 );
64 assert_eq!(registry.select_language("zed/sumk").map(|l| l.name()), None);
65}
66
67#[gpui::test]
68fn test_edit_events(cx: &mut gpui::MutableAppContext) {
69 let mut now = Instant::now();
70 let buffer_1_events = Rc::new(RefCell::new(Vec::new()));
71 let buffer_2_events = Rc::new(RefCell::new(Vec::new()));
72
73 let buffer1 = cx.add_model(|cx| Buffer::new(0, "abcdef", cx));
74 let buffer2 = cx.add_model(|cx| Buffer::new(1, "abcdef", cx));
75 let buffer_ops = buffer1.update(cx, |buffer, cx| {
76 let buffer_1_events = buffer_1_events.clone();
77 cx.subscribe(&buffer1, move |_, _, event, _| {
78 buffer_1_events.borrow_mut().push(event.clone())
79 })
80 .detach();
81 let buffer_2_events = buffer_2_events.clone();
82 cx.subscribe(&buffer2, move |_, _, event, _| {
83 buffer_2_events.borrow_mut().push(event.clone())
84 })
85 .detach();
86
87 // An edit emits an edited event, followed by a dirtied event,
88 // since the buffer was previously in a clean state.
89 buffer.edit(Some(2..4), "XYZ", cx);
90
91 // An empty transaction does not emit any events.
92 buffer.start_transaction();
93 buffer.end_transaction(cx);
94
95 // A transaction containing two edits emits one edited event.
96 now += Duration::from_secs(1);
97 buffer.start_transaction_at(now);
98 buffer.edit(Some(5..5), "u", cx);
99 buffer.edit(Some(6..6), "w", cx);
100 buffer.end_transaction_at(now, cx);
101
102 // Undoing a transaction emits one edited event.
103 buffer.undo(cx);
104
105 buffer.operations.clone()
106 });
107
108 // Incorporating a set of remote ops emits a single edited event,
109 // followed by a dirtied event.
110 buffer2.update(cx, |buffer, cx| {
111 buffer.apply_ops(buffer_ops, cx).unwrap();
112 });
113
114 let buffer_1_events = buffer_1_events.borrow();
115 assert_eq!(
116 *buffer_1_events,
117 vec![Event::Edited, Event::Dirtied, Event::Edited, Event::Edited]
118 );
119
120 let buffer_2_events = buffer_2_events.borrow();
121 assert_eq!(*buffer_2_events, vec![Event::Edited, Event::Dirtied]);
122}
123
124#[gpui::test]
125async fn test_apply_diff(mut cx: gpui::TestAppContext) {
126 let text = "a\nbb\nccc\ndddd\neeeee\nffffff\n";
127 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx));
128
129 let text = "a\nccc\ndddd\nffffff\n";
130 let diff = buffer.read_with(&cx, |b, cx| b.diff(text.into(), cx)).await;
131 buffer.update(&mut cx, |b, cx| b.apply_diff(diff, cx));
132 cx.read(|cx| assert_eq!(buffer.read(cx).text(), text));
133
134 let text = "a\n1\n\nccc\ndd2dd\nffffff\n";
135 let diff = buffer.read_with(&cx, |b, cx| b.diff(text.into(), cx)).await;
136 buffer.update(&mut cx, |b, cx| b.apply_diff(diff, cx));
137 cx.read(|cx| assert_eq!(buffer.read(cx).text(), text));
138}
139
140#[gpui::test]
141async fn test_reparse(mut cx: gpui::TestAppContext) {
142 let text = "fn a() {}";
143 let buffer = cx.add_model(|cx| {
144 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang())), None, cx)
145 });
146
147 // Wait for the initial text to parse
148 buffer
149 .condition(&cx, |buffer, _| !buffer.is_parsing())
150 .await;
151 assert_eq!(
152 get_tree_sexp(&buffer, &cx),
153 concat!(
154 "(source_file (function_item name: (identifier) ",
155 "parameters: (parameters) ",
156 "body: (block)))"
157 )
158 );
159
160 buffer.update(&mut cx, |buffer, _| {
161 buffer.set_sync_parse_timeout(Duration::ZERO)
162 });
163
164 // Perform some edits (add parameter and variable reference)
165 // Parsing doesn't begin until the transaction is complete
166 buffer.update(&mut cx, |buf, cx| {
167 buf.start_transaction();
168
169 let offset = buf.text().find(")").unwrap();
170 buf.edit(vec![offset..offset], "b: C", cx);
171 assert!(!buf.is_parsing());
172
173 let offset = buf.text().find("}").unwrap();
174 buf.edit(vec![offset..offset], " d; ", cx);
175 assert!(!buf.is_parsing());
176
177 buf.end_transaction(cx);
178 assert_eq!(buf.text(), "fn a(b: C) { d; }");
179 assert!(buf.is_parsing());
180 });
181 buffer
182 .condition(&cx, |buffer, _| !buffer.is_parsing())
183 .await;
184 assert_eq!(
185 get_tree_sexp(&buffer, &cx),
186 concat!(
187 "(source_file (function_item name: (identifier) ",
188 "parameters: (parameters (parameter pattern: (identifier) type: (type_identifier))) ",
189 "body: (block (identifier))))"
190 )
191 );
192
193 // Perform a series of edits without waiting for the current parse to complete:
194 // * turn identifier into a field expression
195 // * turn field expression into a method call
196 // * add a turbofish to the method call
197 buffer.update(&mut cx, |buf, cx| {
198 let offset = buf.text().find(";").unwrap();
199 buf.edit(vec![offset..offset], ".e", cx);
200 assert_eq!(buf.text(), "fn a(b: C) { d.e; }");
201 assert!(buf.is_parsing());
202 });
203 buffer.update(&mut cx, |buf, cx| {
204 let offset = buf.text().find(";").unwrap();
205 buf.edit(vec![offset..offset], "(f)", cx);
206 assert_eq!(buf.text(), "fn a(b: C) { d.e(f); }");
207 assert!(buf.is_parsing());
208 });
209 buffer.update(&mut cx, |buf, cx| {
210 let offset = buf.text().find("(f)").unwrap();
211 buf.edit(vec![offset..offset], "::<G>", cx);
212 assert_eq!(buf.text(), "fn a(b: C) { d.e::<G>(f); }");
213 assert!(buf.is_parsing());
214 });
215 buffer
216 .condition(&cx, |buffer, _| !buffer.is_parsing())
217 .await;
218 assert_eq!(
219 get_tree_sexp(&buffer, &cx),
220 concat!(
221 "(source_file (function_item name: (identifier) ",
222 "parameters: (parameters (parameter pattern: (identifier) type: (type_identifier))) ",
223 "body: (block (call_expression ",
224 "function: (generic_function ",
225 "function: (field_expression value: (identifier) field: (field_identifier)) ",
226 "type_arguments: (type_arguments (type_identifier))) ",
227 "arguments: (arguments (identifier))))))",
228 )
229 );
230
231 buffer.update(&mut cx, |buf, cx| {
232 buf.undo(cx);
233 assert_eq!(buf.text(), "fn a() {}");
234 assert!(buf.is_parsing());
235 });
236 buffer
237 .condition(&cx, |buffer, _| !buffer.is_parsing())
238 .await;
239 assert_eq!(
240 get_tree_sexp(&buffer, &cx),
241 concat!(
242 "(source_file (function_item name: (identifier) ",
243 "parameters: (parameters) ",
244 "body: (block)))"
245 )
246 );
247
248 buffer.update(&mut cx, |buf, cx| {
249 buf.redo(cx);
250 assert_eq!(buf.text(), "fn a(b: C) { d.e::<G>(f); }");
251 assert!(buf.is_parsing());
252 });
253 buffer
254 .condition(&cx, |buffer, _| !buffer.is_parsing())
255 .await;
256 assert_eq!(
257 get_tree_sexp(&buffer, &cx),
258 concat!(
259 "(source_file (function_item name: (identifier) ",
260 "parameters: (parameters (parameter pattern: (identifier) type: (type_identifier))) ",
261 "body: (block (call_expression ",
262 "function: (generic_function ",
263 "function: (field_expression value: (identifier) field: (field_identifier)) ",
264 "type_arguments: (type_arguments (type_identifier))) ",
265 "arguments: (arguments (identifier))))))",
266 )
267 );
268
269 fn get_tree_sexp(buffer: &ModelHandle<Buffer>, cx: &gpui::TestAppContext) -> String {
270 buffer.read_with(cx, |buffer, _| {
271 buffer.syntax_tree().unwrap().root_node().to_sexp()
272 })
273 }
274}
275
276#[gpui::test]
277fn test_enclosing_bracket_ranges(cx: &mut MutableAppContext) {
278 let buffer = cx.add_model(|cx| {
279 let text = "
280 mod x {
281 mod y {
282
283 }
284 }
285 "
286 .unindent();
287 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang())), None, cx)
288 });
289 let buffer = buffer.read(cx);
290 assert_eq!(
291 buffer.enclosing_bracket_point_ranges(Point::new(1, 6)..Point::new(1, 6)),
292 Some((
293 Point::new(0, 6)..Point::new(0, 7),
294 Point::new(4, 0)..Point::new(4, 1)
295 ))
296 );
297 assert_eq!(
298 buffer.enclosing_bracket_point_ranges(Point::new(1, 10)..Point::new(1, 10)),
299 Some((
300 Point::new(1, 10)..Point::new(1, 11),
301 Point::new(3, 4)..Point::new(3, 5)
302 ))
303 );
304 assert_eq!(
305 buffer.enclosing_bracket_point_ranges(Point::new(3, 5)..Point::new(3, 5)),
306 Some((
307 Point::new(1, 10)..Point::new(1, 11),
308 Point::new(3, 4)..Point::new(3, 5)
309 ))
310 );
311}
312
313#[gpui::test]
314fn test_edit_with_autoindent(cx: &mut MutableAppContext) {
315 cx.add_model(|cx| {
316 let text = "fn a() {}";
317 let mut buffer =
318 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang())), None, cx);
319
320 buffer.edit_with_autoindent([8..8], "\n\n", cx);
321 assert_eq!(buffer.text(), "fn a() {\n \n}");
322
323 buffer.edit_with_autoindent([Point::new(1, 4)..Point::new(1, 4)], "b()\n", cx);
324 assert_eq!(buffer.text(), "fn a() {\n b()\n \n}");
325
326 buffer.edit_with_autoindent([Point::new(2, 4)..Point::new(2, 4)], ".c", cx);
327 assert_eq!(buffer.text(), "fn a() {\n b()\n .c\n}");
328
329 buffer
330 });
331}
332
333#[gpui::test]
334fn test_autoindent_does_not_adjust_lines_with_unchanged_suggestion(cx: &mut MutableAppContext) {
335 cx.add_model(|cx| {
336 let text = "
337 fn a() {
338 c;
339 d;
340 }
341 "
342 .unindent();
343
344 let mut buffer =
345 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang())), None, cx);
346
347 // Lines 2 and 3 don't match the indentation suggestion. When editing these lines,
348 // their indentation is not adjusted.
349 buffer.edit_with_autoindent([empty(Point::new(1, 1)), empty(Point::new(2, 1))], "()", cx);
350 assert_eq!(
351 buffer.text(),
352 "
353 fn a() {
354 c();
355 d();
356 }
357 "
358 .unindent()
359 );
360
361 // When appending new content after these lines, the indentation is based on the
362 // preceding lines' actual indentation.
363 buffer.edit_with_autoindent(
364 [empty(Point::new(1, 1)), empty(Point::new(2, 1))],
365 "\n.f\n.g",
366 cx,
367 );
368 assert_eq!(
369 buffer.text(),
370 "
371 fn a() {
372 c
373 .f
374 .g();
375 d
376 .f
377 .g();
378 }
379 "
380 .unindent()
381 );
382 buffer
383 });
384}
385
386#[gpui::test]
387fn test_autoindent_adjusts_lines_when_only_text_changes(cx: &mut MutableAppContext) {
388 cx.add_model(|cx| {
389 let text = "
390 fn a() {}
391 "
392 .unindent();
393
394 let mut buffer =
395 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang())), None, cx);
396
397 buffer.edit_with_autoindent([5..5], "\nb", cx);
398 assert_eq!(
399 buffer.text(),
400 "
401 fn a(
402 b) {}
403 "
404 .unindent()
405 );
406
407 // The indentation suggestion changed because `@end` node (a close paren)
408 // is now at the beginning of the line.
409 buffer.edit_with_autoindent([Point::new(1, 4)..Point::new(1, 5)], "", cx);
410 assert_eq!(
411 buffer.text(),
412 "
413 fn a(
414 ) {}
415 "
416 .unindent()
417 );
418
419 buffer
420 });
421}
422
423#[gpui::test]
424async fn test_diagnostics(mut cx: gpui::TestAppContext) {
425 let (language_server, mut fake) = lsp::LanguageServer::fake(cx.background()).await;
426 let mut rust_lang = rust_lang();
427 rust_lang.config.language_server = Some(LanguageServerConfig {
428 disk_based_diagnostic_sources: HashSet::from_iter(["disk".to_string()]),
429 ..Default::default()
430 });
431
432 let text = "
433 fn a() { A }
434 fn b() { BB }
435 fn c() { CCC }
436 "
437 .unindent();
438
439 let buffer = cx.add_model(|cx| {
440 Buffer::new(0, text, cx).with_language(Some(Arc::new(rust_lang)), Some(language_server), cx)
441 });
442
443 let open_notification = fake
444 .receive_notification::<lsp::notification::DidOpenTextDocument>()
445 .await;
446
447 // Edit the buffer, moving the content down
448 buffer.update(&mut cx, |buffer, cx| buffer.edit([0..0], "\n\n", cx));
449 let change_notification_1 = fake
450 .receive_notification::<lsp::notification::DidChangeTextDocument>()
451 .await;
452 assert!(change_notification_1.text_document.version > open_notification.text_document.version);
453
454 buffer.update(&mut cx, |buffer, cx| {
455 // Receive diagnostics for an earlier version of the buffer.
456 buffer
457 .update_diagnostics(
458 Some(open_notification.text_document.version),
459 vec![
460 DiagnosticEntry {
461 range: PointUtf16::new(0, 9)..PointUtf16::new(0, 10),
462 diagnostic: Diagnostic {
463 severity: DiagnosticSeverity::ERROR,
464 message: "undefined variable 'A'".to_string(),
465 is_disk_based: true,
466 group_id: 0,
467 is_primary: true,
468 ..Default::default()
469 },
470 },
471 DiagnosticEntry {
472 range: PointUtf16::new(1, 9)..PointUtf16::new(1, 11),
473 diagnostic: Diagnostic {
474 severity: DiagnosticSeverity::ERROR,
475 message: "undefined variable 'BB'".to_string(),
476 is_disk_based: true,
477 group_id: 1,
478 is_primary: true,
479 ..Default::default()
480 },
481 },
482 DiagnosticEntry {
483 range: PointUtf16::new(2, 9)..PointUtf16::new(2, 12),
484 diagnostic: Diagnostic {
485 severity: DiagnosticSeverity::ERROR,
486 is_disk_based: true,
487 message: "undefined variable 'CCC'".to_string(),
488 group_id: 2,
489 is_primary: true,
490 ..Default::default()
491 },
492 },
493 ],
494 cx,
495 )
496 .unwrap();
497
498 // The diagnostics have moved down since they were created.
499 assert_eq!(
500 buffer
501 .snapshot()
502 .diagnostics_in_range::<_, Point>(Point::new(3, 0)..Point::new(5, 0))
503 .collect::<Vec<_>>(),
504 &[
505 DiagnosticEntry {
506 range: Point::new(3, 9)..Point::new(3, 11),
507 diagnostic: Diagnostic {
508 severity: DiagnosticSeverity::ERROR,
509 message: "undefined variable 'BB'".to_string(),
510 is_disk_based: true,
511 group_id: 1,
512 is_primary: true,
513 ..Default::default()
514 },
515 },
516 DiagnosticEntry {
517 range: Point::new(4, 9)..Point::new(4, 12),
518 diagnostic: Diagnostic {
519 severity: DiagnosticSeverity::ERROR,
520 message: "undefined variable 'CCC'".to_string(),
521 is_disk_based: true,
522 group_id: 2,
523 is_primary: true,
524 ..Default::default()
525 }
526 }
527 ]
528 );
529 assert_eq!(
530 chunks_with_diagnostics(buffer, 0..buffer.len()),
531 [
532 ("\n\nfn a() { ".to_string(), None),
533 ("A".to_string(), Some(DiagnosticSeverity::ERROR)),
534 (" }\nfn b() { ".to_string(), None),
535 ("BB".to_string(), Some(DiagnosticSeverity::ERROR)),
536 (" }\nfn c() { ".to_string(), None),
537 ("CCC".to_string(), Some(DiagnosticSeverity::ERROR)),
538 (" }\n".to_string(), None),
539 ]
540 );
541 assert_eq!(
542 chunks_with_diagnostics(buffer, Point::new(3, 10)..Point::new(4, 11)),
543 [
544 ("B".to_string(), Some(DiagnosticSeverity::ERROR)),
545 (" }\nfn c() { ".to_string(), None),
546 ("CC".to_string(), Some(DiagnosticSeverity::ERROR)),
547 ]
548 );
549
550 // Ensure overlapping diagnostics are highlighted correctly.
551 buffer
552 .update_diagnostics(
553 Some(open_notification.text_document.version),
554 vec![
555 DiagnosticEntry {
556 range: PointUtf16::new(0, 9)..PointUtf16::new(0, 10),
557 diagnostic: Diagnostic {
558 severity: DiagnosticSeverity::ERROR,
559 message: "undefined variable 'A'".to_string(),
560 is_disk_based: true,
561 group_id: 0,
562 is_primary: true,
563 ..Default::default()
564 },
565 },
566 DiagnosticEntry {
567 range: PointUtf16::new(0, 9)..PointUtf16::new(0, 12),
568 diagnostic: Diagnostic {
569 severity: DiagnosticSeverity::WARNING,
570 message: "unreachable statement".to_string(),
571 group_id: 1,
572 is_primary: true,
573 ..Default::default()
574 },
575 },
576 ],
577 cx,
578 )
579 .unwrap();
580 assert_eq!(
581 buffer
582 .snapshot()
583 .diagnostics_in_range::<_, Point>(Point::new(2, 0)..Point::new(3, 0))
584 .collect::<Vec<_>>(),
585 &[
586 DiagnosticEntry {
587 range: Point::new(2, 9)..Point::new(2, 12),
588 diagnostic: Diagnostic {
589 severity: DiagnosticSeverity::WARNING,
590 message: "unreachable statement".to_string(),
591 group_id: 1,
592 is_primary: true,
593 ..Default::default()
594 }
595 },
596 DiagnosticEntry {
597 range: Point::new(2, 9)..Point::new(2, 10),
598 diagnostic: Diagnostic {
599 severity: DiagnosticSeverity::ERROR,
600 message: "undefined variable 'A'".to_string(),
601 is_disk_based: true,
602 group_id: 0,
603 is_primary: true,
604 ..Default::default()
605 },
606 }
607 ]
608 );
609 assert_eq!(
610 chunks_with_diagnostics(buffer, Point::new(2, 0)..Point::new(3, 0)),
611 [
612 ("fn a() { ".to_string(), None),
613 ("A".to_string(), Some(DiagnosticSeverity::ERROR)),
614 (" }".to_string(), Some(DiagnosticSeverity::WARNING)),
615 ("\n".to_string(), None),
616 ]
617 );
618 assert_eq!(
619 chunks_with_diagnostics(buffer, Point::new(2, 10)..Point::new(3, 0)),
620 [
621 (" }".to_string(), Some(DiagnosticSeverity::WARNING)),
622 ("\n".to_string(), None),
623 ]
624 );
625 });
626
627 // Keep editing the buffer and ensure disk-based diagnostics get translated according to the
628 // changes since the last save.
629 buffer.update(&mut cx, |buffer, cx| {
630 buffer.edit(Some(Point::new(2, 0)..Point::new(2, 0)), " ", cx);
631 buffer.edit(Some(Point::new(2, 8)..Point::new(2, 10)), "(x: usize)", cx);
632 });
633 let change_notification_2 = fake
634 .receive_notification::<lsp::notification::DidChangeTextDocument>()
635 .await;
636 assert!(
637 change_notification_2.text_document.version > change_notification_1.text_document.version
638 );
639
640 buffer.update(&mut cx, |buffer, cx| {
641 buffer
642 .update_diagnostics(
643 Some(change_notification_2.text_document.version),
644 vec![
645 DiagnosticEntry {
646 range: PointUtf16::new(1, 9)..PointUtf16::new(1, 11),
647 diagnostic: Diagnostic {
648 severity: DiagnosticSeverity::ERROR,
649 message: "undefined variable 'BB'".to_string(),
650 is_disk_based: true,
651 group_id: 1,
652 is_primary: true,
653 ..Default::default()
654 },
655 },
656 DiagnosticEntry {
657 range: PointUtf16::new(0, 9)..PointUtf16::new(0, 10),
658 diagnostic: Diagnostic {
659 severity: DiagnosticSeverity::ERROR,
660 message: "undefined variable 'A'".to_string(),
661 is_disk_based: true,
662 group_id: 0,
663 is_primary: true,
664 ..Default::default()
665 },
666 },
667 ],
668 cx,
669 )
670 .unwrap();
671 assert_eq!(
672 buffer
673 .snapshot()
674 .diagnostics_in_range::<_, Point>(0..buffer.len())
675 .collect::<Vec<_>>(),
676 &[
677 DiagnosticEntry {
678 range: Point::new(2, 21)..Point::new(2, 22),
679 diagnostic: Diagnostic {
680 severity: DiagnosticSeverity::ERROR,
681 message: "undefined variable 'A'".to_string(),
682 is_disk_based: true,
683 group_id: 0,
684 is_primary: true,
685 ..Default::default()
686 }
687 },
688 DiagnosticEntry {
689 range: Point::new(3, 9)..Point::new(3, 11),
690 diagnostic: Diagnostic {
691 severity: DiagnosticSeverity::ERROR,
692 message: "undefined variable 'BB'".to_string(),
693 is_disk_based: true,
694 group_id: 1,
695 is_primary: true,
696 ..Default::default()
697 },
698 }
699 ]
700 );
701 });
702}
703
704#[gpui::test]
705async fn test_empty_diagnostic_ranges(mut cx: gpui::TestAppContext) {
706 cx.add_model(|cx| {
707 let text = concat!(
708 "let one = ;\n", //
709 "let two = \n",
710 "let three = 3;\n",
711 );
712
713 let mut buffer = Buffer::new(0, text, cx);
714 buffer.set_language(Some(Arc::new(rust_lang())), None, cx);
715 buffer
716 .update_diagnostics(
717 None,
718 vec![
719 DiagnosticEntry {
720 range: PointUtf16::new(0, 10)..PointUtf16::new(0, 10),
721 diagnostic: Diagnostic {
722 severity: DiagnosticSeverity::ERROR,
723 message: "syntax error 1".to_string(),
724 ..Default::default()
725 },
726 },
727 DiagnosticEntry {
728 range: PointUtf16::new(1, 10)..PointUtf16::new(1, 10),
729 diagnostic: Diagnostic {
730 severity: DiagnosticSeverity::ERROR,
731 message: "syntax error 2".to_string(),
732 ..Default::default()
733 },
734 },
735 ],
736 cx,
737 )
738 .unwrap();
739
740 // An empty range is extended forward to include the following character.
741 // At the end of a line, an empty range is extended backward to include
742 // the preceding character.
743 let chunks = chunks_with_diagnostics(&buffer, 0..buffer.len());
744 assert_eq!(
745 chunks
746 .iter()
747 .map(|(s, d)| (s.as_str(), *d))
748 .collect::<Vec<_>>(),
749 &[
750 ("let one = ", None),
751 (";", Some(DiagnosticSeverity::ERROR)),
752 ("\nlet two =", None),
753 (" ", Some(DiagnosticSeverity::ERROR)),
754 ("\nlet three = 3;\n", None)
755 ]
756 );
757 buffer
758 });
759}
760
761fn chunks_with_diagnostics<T: ToOffset + ToPoint>(
762 buffer: &Buffer,
763 range: Range<T>,
764) -> Vec<(String, Option<DiagnosticSeverity>)> {
765 let mut chunks: Vec<(String, Option<DiagnosticSeverity>)> = Vec::new();
766 for chunk in buffer.snapshot().chunks(range, Some(&Default::default())) {
767 if chunks
768 .last()
769 .map_or(false, |prev_chunk| prev_chunk.1 == chunk.diagnostic)
770 {
771 chunks.last_mut().unwrap().0.push_str(chunk.text);
772 } else {
773 chunks.push((chunk.text.to_string(), chunk.diagnostic));
774 }
775 }
776 chunks
777}
778
779#[test]
780fn test_contiguous_ranges() {
781 assert_eq!(
782 contiguous_ranges([1, 2, 3, 5, 6, 9, 10, 11, 12].into_iter(), 100).collect::<Vec<_>>(),
783 &[1..4, 5..7, 9..13]
784 );
785
786 // Respects the `max_len` parameter
787 assert_eq!(
788 contiguous_ranges(
789 [2, 3, 4, 5, 6, 7, 8, 9, 23, 24, 25, 26, 30, 31].into_iter(),
790 3
791 )
792 .collect::<Vec<_>>(),
793 &[2..5, 5..8, 8..10, 23..26, 26..27, 30..32],
794 );
795}
796
797impl Buffer {
798 pub fn enclosing_bracket_point_ranges<T: ToOffset>(
799 &self,
800 range: Range<T>,
801 ) -> Option<(Range<Point>, Range<Point>)> {
802 self.snapshot()
803 .enclosing_bracket_ranges(range)
804 .map(|(start, end)| {
805 let point_start = start.start.to_point(self)..start.end.to_point(self);
806 let point_end = end.start.to_point(self)..end.end.to_point(self);
807 (point_start, point_end)
808 })
809 }
810}
811
812fn rust_lang() -> Language {
813 Language::new(
814 LanguageConfig {
815 name: "Rust".to_string(),
816 path_suffixes: vec!["rs".to_string()],
817 language_server: None,
818 ..Default::default()
819 },
820 Some(tree_sitter_rust::language()),
821 )
822 .with_indents_query(
823 r#"
824 (call_expression) @indent
825 (field_expression) @indent
826 (_ "(" ")" @end) @indent
827 (_ "{" "}" @end) @indent
828 "#,
829 )
830 .unwrap()
831 .with_brackets_query(r#" ("{" @open "}" @close) "#)
832 .unwrap()
833}
834
835fn empty(point: Point) -> Range<Point> {
836 point..point
837}