Repository navigation
Expand file tree
/
Copy pathhipatterns.lua
More file actions
1030 lines (895 loc) · 39.2 KB
/
Copy pathhipatterns.lua
File metadata and controls
1030 lines (895 loc) · 39.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
--- *mini.hipatterns* Highlight patterns in text
--- *MiniHipatterns*
---
--- MIT License Copyright (c) 2023 Evgeni Chasnovski
---
--- ==============================================================================
---
--- Features:
--- - Highlight text with configurable patterns and highlight groups (can be
--- string or callable).
---
--- - Highlighting is updated asynchronously with configurable debounce delay.
---
--- - Function to get matches in a buffer (see |MiniHipatterns.get_matches()|).
---
--- See |MiniHipatterns-examples| for common configuration examples.
---
--- Notes:
--- - It does not define any highlighters by default. Add to `config.highlighters`
--- to have a visible effect.
---
--- - Sometimes (especially during frequent buffer updates on same line numbers)
--- highlighting can be outdated or not applied when it should be. This is due
--- to asynchronous nature of updates reacting to text changes (via
--- `on_lines` of |nvim_buf_attach()|).
--- To make them up to date, use one of the following:
--- - Scroll window (for example, with |CTRL-E| / |CTRL-Y|). This will ensure
--- up to date highlighting inside window view.
--- - Hide and show buffer.
--- - Execute `:edit` (if you enabled highlighting with |MiniHipatterns.setup()|).
--- - Manually call |MiniHipatterns.update()|.
---
--- - If you experience flicker when typing near highlighted pattern in Insert
--- mode, it might be due to `delay` configuration of 'mini.completion' or
--- using built-in completion.
--- For better experience with 'mini.completion', make sure that its
--- `delay.completion` is less than this module's `delay.text_change` (which
--- it is by default).
--- The reason for this is (currently unresolvable) limitations of Neovim's
--- built-in completion implementation.
---
--- # Setup ~
---
--- Setting up highlights can be done in two ways:
--- - Manually for every buffer with `require('mini.hipatterns').enable()`.
--- This will enable highlighting only in one particular buffer until it is
--- unloaded (which also includes calling `:edit` on current file).
---
--- - Globally with `require('mini.hipatterns').setup({})` (replace `{}` with
--- your `config` table). This will auto-enable highlighting in "normal"
--- buffers (see 'buftype'). Use |MiniHipatterns.enable()| to manually enable
--- in other buffers.
--- It will also create global Lua table `MiniHipatterns` which you can use
--- for scripting or manually (with `:lua MiniHipatterns.*`).
---
--- See |MiniHipatterns.config| for `config` structure and default values.
---
--- You can override runtime config settings (like highlighters and delays)
--- locally to buffer inside `vim.b.minihipatterns_config` which should have
--- same structure as `MiniHipatterns.config`.
--- See |mini.nvim-buffer-local-config| for more details.
---
--- # Comparisons ~
---
--- - 'folke/todo-comments':
--- - Oriented for "TODO", "NOTE", "FIXME" like patterns, while this module
--- can work with any Lua patterns and computable highlight groups.
--- - Has functionality beyond text highlighting (sign placing,
--- "telescope.nvim" extension, etc.), while this module only focuses on
--- highlighting text.
--- - 'folke/paint.nvim':
--- - Mostly similar to this module, but with slightly less functionality,
--- such as computed pattern and highlight group, asynchronous delay, etc.
--- - 'NvChad/nvim-colorizer.lua':
--- - Oriented for color highlighting, while this module can work with any
--- Lua patterns and computable highlight groups.
--- - Has more built-in color spaces to highlight, while this module out of
--- the box provides only hex color highlighting
--- (see |MiniHipatterns.gen_highlighter.hex_color()|). Other types are
--- also possible to implement.
--- - 'uga-rosa/ccc.nvim':
--- - Has more than color highlighting functionality, which is compared to
--- this module in the same way as 'NvChad/nvim-colorizer.lua'.
---
--- # Highlight groups ~
---
--- * `MiniHipatternsFixme` - suggested group to use for `FIXME`-like patterns.
--- * `MiniHipatternsHack` - suggested group to use for `HACK`-like patterns.
--- * `MiniHipatternsTodo` - suggested group to use for `TODO`-like patterns.
--- * `MiniHipatternsNote` - suggested group to use for `NOTE`-like patterns.
---
--- To change any highlight group, modify it directly with |:highlight|.
---
--- # Disabling ~
---
--- This module can be disabled in three ways:
--- - Globally: set `vim.g.minihipatterns_disable` to `true`.
--- - Locally for buffer permanently: set `vim.b.minihipatterns_disable` to `true`.
--- - Locally for buffer temporarily (until next auto-enabling event if set up
--- with |MiniHipatterns.setup()|): call |MiniHipatterns.disable()|.
---
--- Considering high number of different scenarios and customization
--- intentions, writing exact rules for disabling module's functionality is
--- left to user. See |mini.nvim-disabling-recipes| for common recipes.
--- # Common configuration examples ~
---
--- - Special words used to convey different level of attention: >lua
---
--- require('mini.hipatterns').setup({
--- highlighters = {
--- fixme = { pattern = 'FIXME', group = 'MiniHipatternsFixme' },
--- hack = { pattern = 'HACK', group = 'MiniHipatternsHack' },
--- todo = { pattern = 'TODO', group = 'MiniHipatternsTodo' },
--- note = { pattern = 'NOTE', group = 'MiniHipatternsNote' },
--- }
--- })
--- <
--- - To match only when pattern appears as a standalone word, use frontier
--- patterns `%f`. For example, instead of `'TODO'` pattern use
--- `'%f[%w]()TODO()%f[%W]'`. In this case, for example, 'TODOING' or 'MYTODO'
--- won't match, but 'TODO' and 'TODO:' will.
---
--- - Color hex (like `#rrggbb`) highlighting: >lua
---
--- local hipatterns = require('mini.hipatterns')
--- hipatterns.setup({
--- highlighters = {
--- hex_color = hipatterns.gen_highlighter.hex_color(),
--- }
--- })
--- <
--- You can customize which part of hex color is highlighted by using `style`
--- field of input options. See |MiniHipatterns.gen_highlighter.hex_color()|.
---
--- - Colored words: >lua
---
--- local words = { red = '#ff0000', green = '#00ff00', blue = '#0000ff' }
--- local word_color_group = function(_, match)
--- local hex = words[match]
--- if hex == nil then return nil end
--- return MiniHipatterns.compute_hex_color_group(hex, 'bg')
--- end
---
--- local hipatterns = require('mini.hipatterns')
--- hipatterns.setup({
--- highlighters = {
--- word_color = { pattern = '%S+', group = word_color_group },
--- },
--- })
--- <
--- - Trailing whitespace (if don't want to use more specific 'mini.trailspace'): >lua
---
--- { pattern = '%f[%s]%s*$', group = 'Error' }
--- <
--- - Censor certain sensitive information: >lua
---
--- local censor_extmark_opts = function(_, match, _)
--- local mask = string.rep('x', vim.fn.strchars(match))
--- return {
--- virt_text = { { mask, 'Comment' } }, virt_text_pos = 'overlay',
--- priority = 200, right_gravity = false,
--- }
--- end
---
--- require('mini.hipatterns').setup({
--- highlighters = {
--- censor = {
--- pattern = 'password: ()%S+()',
--- group = '',
--- extmark_opts = censor_extmark_opts,
--- },
--- },
--- })
--- <
--- - Enable only in certain filetypes. There are at least these ways to do it:
--- - (Suggested) With `vim.b.minihipatterns_config` in |filetype-plugin|.
--- Basically, create "after/ftplugin/<filetype>.lua" file in your config
--- directory (see |$XDG_CONFIG_HOME|) and define `vim.b.minihipatterns_config`
--- there with filetype specific highlighters.
---
--- This assumes `require('mini.hipatterns').setup()` call.
---
--- For example, to highlight keywords in EmmyLua comments in Lua files,
--- create "after/ftplugin/lua.lua" with the following content: >lua
---
--- vim.b.minihipatterns_config = {
--- highlighters = {
--- emmylua = { pattern = '^%s*%-%-%-()@%w+()', group = 'Special' }
--- }
--- }
--- <
--- - Use callable `pattern` with condition. For example: >lua
---
--- require('mini.hipatterns').setup({
--- highlighters = {
--- emmylua = {
--- pattern = function(buf_id)
--- if vim.bo[buf_id].filetype ~= 'lua' then return nil end
--- return '^%s*%-%-%-()@%w+()'
--- end,
--- group = 'Special',
--- },
--- },
--- })
--- <
--- - Disable only in certain filetypes. Enable with |MiniHipatterns.setup()|
--- and set `vim.b.minihipatterns_disable` buffer-local variable to `true` for
--- buffer you want disabled. See |mini.nvim-disabling-recipes| for more examples.
---@tag MiniHipatterns-examples
---@alias __hipatterns_buf_id number|nil Buffer identifier in which to enable highlighting.
--- Default: 0 for current buffer.
---@diagnostic disable:undefined-field
---@diagnostic disable:discard-returns
---@diagnostic disable:unused-local
-- Module definition ==========================================================
local MiniHipatterns = {}
local H = {}
--- Module setup
---
---@param config table|nil Module config table. See |MiniHipatterns.config|.
---
---@usage >lua
--- require('mini.hipatterns').setup({}) -- replace {} with your config table
--- -- needs `highlighters` field present
--- <
MiniHipatterns.setup = function(config)
-- TODO: Remove after Neovim=0.8 support is dropped
if vim.fn.has('nvim-0.9') == 0 then
vim.notify(
'(mini.hipatterns) Neovim<0.9 is soft deprecated (module works but not supported).'
.. ' It will be deprecated after next "mini.nvim" release (module might not work).'
.. ' Please update your Neovim version.'
)
end
-- Export module
_G.MiniHipatterns = MiniHipatterns
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Define behavior
H.create_autocommands()
for _, win_id in ipairs(vim.api.nvim_list_wins()) do
H.auto_enable({ buf = vim.api.nvim_win_get_buf(win_id) })
end
-- Create default highlighting
H.create_default_hl()
end
--- Module config
---
--- Default values:
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
---@text # Options ~
---
--- ## Highlighters ~
---
--- `highlighters` table defines which patterns will be highlighted by placing
--- |extmark| at the match start. It might or might not have explicitly named
--- fields, but having them is recommended and is required for proper use of
--- `vim.b.minihipatterns_config` as buffer-local config. By default it is
--- empty expecting user definition.
---
--- Each entry defines single highlighter as a table with the following fields:
--- - <pattern> `(string|function|table)` - Lua pattern to highlight. Can be
--- either string, callable returning the string, or an array of those.
--- If string:
--- - It can have submatch delimited by placing `()` on start and end, NOT
--- by surrounding with it. Otherwise it will result in error containing
--- `number expected, got string`. Example: `xx()abcd()xx` will match `abcd`
--- only if `xx` is placed before and after it.
---
--- If callable:
--- - It will be called for every enabled buffer with its identifier as input.
---
--- - It can return `nil` meaning this particular highlighter will not work
--- in this particular buffer.
---
--- If array:
--- - Each element is matched and highlighted with the same highlight group.
---
--- - <group> `(string|function)` - name of highlight group to use. Can be either
--- string or callable returning the string.
--- If callable:
--- - It will be called for every pattern match with the following arguments:
--- - `buf_id` - buffer identifier.
--- - `match` - string pattern match to be highlighted.
--- - `data` - extra table with information about the match.
--- It has at least these fields:
--- - <full_match> - string with full pattern match.
--- - <line> - match line number (1-indexed).
--- - <from_col> - match starting byte column (1-indexed).
--- - <to_col> - match ending byte column (1-indexed, inclusive).
---
--- - It can return `nil` meaning this particular match will not be highlighted.
---
--- - <extmark_opts> `(table|function|nil)` - optional extra options
--- for |nvim_buf_set_extmark()|. If callable, will be called in the same way
--- as callable <group> (`data` will also contain `hl_group` key with <group>
--- value) and should return a table with all options for extmark (including
--- `end_row`, `end_col`, `hl_group`, and `priority`).
---
--- See "Common use cases" section for the examples.
---
--- ## Delay ~
---
--- `delay` is a table defining delays in milliseconds used for asynchronous
--- highlighting process.
---
--- `delay.text_change` is used to delay highlighting updates by accumulating
--- them (in debounce fashion). Smaller values will lead to faster response but
--- more frequent updates. Bigger - slower response but less frequent updates.
---
--- `delay.scroll` is used to delay updating highlights in current window view
--- during scrolling (see |WinScrolled| event). These updates are present to
--- ensure up to date highlighting after scroll.
MiniHipatterns.config = {
-- Table with highlighters (see |MiniHipatterns.config| for more details).
-- Nothing is defined by default. Add manually for visible effect.
10BC8
highlighters = {},
-- Delays (in ms) defining asynchronous highlighting process
delay = {
-- How much to wait for update after every text change
text_change = 200,
-- How much to wait for update after window scroll
scroll = 50,
},
}
--minidoc_afterlines_end
--- Enable highlighting in buffer
---
--- Notes:
--- - With default config it will highlight nothing, as there are no default
--- highlighters.
---
--- - Buffer highlighting is enabled until buffer is unloaded from memory
--- or |MiniHipatterns.disable()| on this buffer is called.
---
--- - `:edit` disables this, as it is mostly equivalent to closing and opening
--- buffer. In order for highlighting to persist after `:edit`, call
--- |MiniHipatterns.setup()|.
---
---@param buf_id __hipatterns_buf_id
---@param config table|nil Optional buffer-local config. Should have the same
--- structure as |MiniHipatterns.config|. Values will be taken in this order:
--- - From this `config` argument (if supplied).
--- - From buffer-local config in `vim.b.minihipatterns_config` (if present).
--- - From global config (if |MiniHipatterns.setup()| was called).
--- - From default values.
MiniHipatterns.enable = function(buf_id, config)
buf_id = H.validate_buf_id(buf_id)
config = H.validate_config_arg(config)
-- Don't enable more than once
if H.is_buf_enabled(buf_id) then return end
-- Register enabled buffer with cached data for performance
H.update_cache(buf_id, config)
-- Add buffer watchers
vim.api.nvim_buf_attach(buf_id, false, {
-- Called on every text change (`:h nvim_buf_lines_event`)
on_lines = function(_, _, _, from_line, _, to_line)
local buf_cache = H.cache[buf_id]
-- Properly detach if highlighting is disabled
if buf_cache == nil then return true end
H.process_lines(buf_id, from_line + 1, to_line, buf_cache.delay.text_change)
end,
-- Called when buffer content is changed outside of current session
on_reload = function() pcall(MiniHipatterns.update, buf_id) end,
-- Called when buffer is unloaded from memory (`:h nvim_buf_detach_event`),
-- **including** `:edit` command
on_detach = function() MiniHipatterns.disable(buf_id) end,
})
-- Add buffer autocommands
local augroup = vim.api.nvim_create_augroup('MiniHipatternsBuffer' .. buf_id, { clear = true })
H.cache[buf_id].augroup = augroup
local update_buf = vim.schedule_wrap(function()
if not H.is_buf_enabled(buf_id) then return end
H.update_cache(buf_id, config)
local delay_ms = H.cache[buf_id].delay.text_change
H.process_lines(buf_id, 1, vim.api.nvim_buf_line_count(buf_id), delay_ms)
end)
vim.api.nvim_create_autocmd(
{ 'BufWinEnter', 'FileType' },
{ group = augroup, buffer = buf_id, callback = update_buf, desc = 'Update highlighting for whole buffer' }
)
vim.api.nvim_create_autocmd(
'WinScrolled',
{ group = augroup, buffer = buf_id, callback = H.update_view, desc = 'Update highlighting in view' }
)
-- Add highlighting to whole buffer
H.process_lines(buf_id, 1, vim.api.nvim_buf_line_count(buf_id), 0)
end
--- Disable highlighting in buffer
---
--- Note that if |MiniHipatterns.setup()| was called, the effect is present
--- until the next auto-enabling event. To permanently disable highlighting in
--- buffer, set `vim.b.minihipatterns_disable` to `true`
---
---@param buf_id __hipatterns_buf_id
MiniHipatterns.disable = function(buf_id)
buf_id = H.validate_buf_id(buf_id)
local buf_cache = H.cache[buf_id]
if buf_cache == nil then return end
H.cache[buf_id] = nil
vim.api.nvim_del_augroup_by_id(buf_cache.augroup)
for _, ns in pairs(H.ns_id) do
H.clear_namespace(buf_id, ns, 0, -1)
end
end
--- Toggle highlighting in buffer
---
--- Call |MiniHipatterns.disable()| if enabled; |MiniHipatterns.enable()| otherwise.
---
---@param buf_id __hipatterns_buf_id
---@param config table|nil Forwarded to |MiniHipatterns.enable()|.
MiniHipatterns.toggle = function(buf_id, config)
buf_id = H.validate_buf_id(buf_id)
config = H.validate_config_arg(config)
if H.is_buf_enabled(buf_id) then
MiniHipatterns.disable(buf_id)
else
MiniHipatterns.enable(buf_id, config)
end
end
--- Update highlighting in range
---
--- Works only in buffer with enabled highlighting. Effect takes immediately
--- without delay.
---
---@param buf_id __hipatterns_buf_id
---@param from_line number|nil Start line from which to update (1-indexed).
---@param to_line number|nil End line from which to update (1-indexed, inclusive).
MiniHipatterns.update = function(buf_id, from_line, to_line)
buf_id = H.validate_buf_id(buf_id)
if not H.is_buf_enabled(buf_id) then H.error(string.format('Buffer %d is not enabled.', buf_id)) end
from_line = from_line or 1
if type(from_line) ~= 'number' then H.error('`from_line` should be a number.') end
to_line = to_line or vim.api.nvim_buf_line_count(buf_id)
if type(to_line) ~= 'number' then H.error('`to_line` should be a number.') end
-- Process lines immediately without delay
H.process_lines(buf_id, from_line, to_line, 0)
end
--- Get an array of enabled buffers
---
---@return table Array of buffer identifiers with enabled highlighting.
MiniHipatterns.get_enabled_buffers = function()
local res = {}
for buf_id, _ in pairs(H.cache) do
if vim.api.nvim_buf_is_valid(buf_id) then
table.insert(res, buf_id)
else
-- Clean up if buffer is invalid and for some reason is still enabled
H.cache[buf_id] = nil
end
end
-- Ensure consistent order
table.sort(res)
return res
end
--- Get buffer matches
---
---@param buf_id number|nil Buffer identifier for which to return matches.
--- Default: `nil` for current buffer.
---@param highlighters table|nil Array of highlighter identifiers (as in
--- `highlighters` field of |MiniHipatterns.config|) for which to return matches.
--- Default: all available highlighters (ordered by string representation).
---
---@return table Array of buffer matches which are tables with following fields:
--- - <bufnr> `(number)` - buffer identifier of a match.
--- - <highlighter> `(any)` - highlighter identifier which produced the match.
--- - <lnum> `(number)` - line number of the match start (starts with 1).
--- - <col> `(number)` - column number of the match start (starts with 1).
--- - <end_lnum> `(number|nil)` - line number of the match end (starts with 1).
--- - <end_col> `(number|nil)` - column number next to the match end
--- (implements end-exclusive region; starts with 1).
--- - <hl_group> `(string|nil)` - name of match's highlight group.
---
--- Matches are ordered first by supplied `highlighters`, then by line and
--- column of match start.
MiniHipatterns.get_matches = function(buf_id, highlighters)
buf_id = (buf_id == nil or buf_id == 0) and vim.api.nvim_get_current_buf() or buf_id
if not (type(buf_id) == 'number' and vim.api.nvim_buf_is_valid(buf_id)) then
H.error('`buf_id` is not valid buffer identifier.')
end
local all_highlighters = H.get_all_highlighters()
highlighters = highlighters or all_highlighters
if not H.islist(highlighters) then H.error('`highlighters` should be an array.') end
highlighters = vim.tbl_filter(function(x) return vim.tbl_contains(all_highlighters, x) end, highlighters)
local position_compare = function(a, b) return a[2] < b[2] or (a[2] == b[2] and a[3] < b[3]) end
local res = {}
for _, hi_id in ipairs(highlighters) do
local extmarks = H.get_extmarks(buf_id, H.ns_id[hi_id], 0, -1, { details = true })
table.sort(extmarks, position_compare)
for _, extmark in ipairs(extmarks) do
local end_lnum, end_col = extmark[4].end_row, extmark[4].end_col
end_lnum = type(end_lnum) == 'number' and (end_lnum + 1) or end_lnum
end_col = type(end_col) == 'number' and (end_col + 1) or end_col
--stylua: ignore
local entry = {
bufnr = buf_id, highlighter = hi_id,
lnum = extmark[2] + 1, col = extmark[3] + 1,
end_lnum = end_lnum, end_col = end_col,
hl_group = extmark[4].hl_group,
}
table.insert(res, entry)
end
end
return res
end
--- Generate builtin highlighters
---
--- This is a table with function elements. Call to actually get highlighter.
MiniHipatterns.gen_highlighter = {}
--- Highlight hex color string
---
--- This will match color hex string in format `#rrggbb` and highlight it
--- according to `opts.style` displaying matched color.
---
--- Highlight group is computed using |MiniHipatterns.compute_hex_color_group()|,
--- so all its usage notes apply here.
---
---@param opts table|nil Options. Possible fields:
--- - <style> `(string)` - one of:
--- - `'full'` - highlight background of whole hex string with it. Default.
--- - `'#'` - highlight background of only `#`.
--- - `'line'` - highlight underline with that color.
--- - `'inline'` - highlight text of <inline_text>.
--- Note: requires Neovim>=0.10.
--- - <priority> `(number)` - priority of highlighting. Default: 200.
--- - <filter> `(function)` - callable object used to filter buffers in which
--- highlighting will take place. It should take buffer identifier as input
--- and return `false` or `nil` to not highlight inside this buffer.
--- - <inline_text> `(string)` - string to be placed and highlighted with color
--- to the right of match in case <style> is "inline". Default: "█".
---
---@return table Highlighter table ready to be used as part of `config.highlighters`.
--- Both `pattern` and `group` are callable.
---
---@usage >lua
--- local hipatterns = require('mini.hipatterns')
--- hipatterns.setup({
--- highlighters = {
--- hex_color = hipatterns.gen_highlighter.hex_color(),
--- }
--- })
--- <
MiniHipatterns.gen_highlighter.hex_color = function(opts)
local default_opts = { style = 'full', priority = 200, filter = H.always_true, inline_text = '█' }
opts = vim.tbl_deep_extend('force', default_opts, opts or {})
local style = opts.style
if style == 'inline' and vim.fn.has('nvim-0.10') == 0 then
H.error('Style "inline" in `gen_highlighter.hex_color()` requires Neovim>=0.10.')
end
local pattern = style == '#' and '()#()%x%x%x%x%x%x%f[%X]' or '#%x%x%x%x%x%x%f[%X]'
local hl_style = ({ full = 'bg', ['#'] = 'bg', line = 'line', inline = 'fg' })[style] or 'bg'
local extmark_opts = { priority = opts.priority }
if opts.style == 'inline' then
local priority, inline_text = opts.priority, opts.inline_text
---@diagnostic disable:cast-local-type
extmark_opts = function(_, _, data)
local virt_text = { { inline_text, data.hl_group } }
return { virt_text = virt_text, virt_text_pos = 'inline', priority = priority, right_gravity = false }
end
end
return {
pattern = H.wrap_pattern_with_filter(pattern, opts.filter),
group = function(_, _, data) return MiniHipatterns.compute_hex_color_group(data.full_match, hl_style) end,
extmark_opts = extmark_opts,
}
end
--- Compute and create group to highlight hex color string
---
--- Notes:
--- - This works properly only with enabled |termguicolors|.
---
--- - To increase performance, it caches highlight groups per `hex_color` and
--- `style` combination. Needs a call to |MiniHipatterns.setup()| to have
--- these groups be persistent across color scheme changes.
---
---@param hex_color string Hex color string in format `#rrggbb`.
---@param style|nil string One of:
--- - `'bg'` - highlight background with `hex_color` and foreground with black or
--- white (whichever is more visible). Default.
--- - `'fg'` - highlight foreground with `hex_color`.
--- - `'line'` - highlight underline with `hex_color`.
---
---@return string Name of created highlight group appropriate to show `hex_color`.
MiniHipatterns.compute_hex_color_group = function(hex_color, style)
style = style or 'bg'
local hex = hex_color:lower():sub(2)
local group_name = string.format('MiniHipatterns_%s_%s', hex, style)
-- Use manually tracked table instead of `vim.fn.hlexists()` because the
-- latter still returns true for cleared highlights
if H.hex_color_groups[group_name] then return group_name end
-- Define highlight group if it is not already defined
if style == 'bg' then
-- Compute opposite color based on Oklab lightness (for better contrast)
local opposite = H.compute_opposite_color(hex)
vim.api.nvim_set_hl(0, group_name, { fg = opposite, bg = hex_color })
end
if style == 'fg' then vim.api.nvim_set_hl(0, group_name, { fg = hex_color }) end
if style == 'line' then vim.api.nvim_set_hl(0, group_name, { sp = hex_color, underline = true }) end
-- Keep track of created groups to properly react on `:hi clear`
H.hex_color_groups[group_name] = true
return group_name
end
-- Helper data ================================================================
-- Module default config
H.default_config = vim.deepcopy(MiniHipatterns.config)
-- Timers
H.timer_debounce = vim.loop.new_timer()
H.timer_view = vim.loop.new_timer()
-- Namespaces per highlighter name
H.ns_id = {}
-- Cache of queued changes used for debounced highlighting
H.change_queue = {}
-- Cache per enabled buffer
H.cache = {}
-- Data about created highlight groups for hex colors
H.hex_color_groups = {}
-- Helper functionality =======================================================
-- Settings -------------------------------------------------------------------
H.setup_config = function(config)
H.check_type('config', config, 'table', true)
config = vim.tbl_deep_extend('force', vim.deepcopy(H.default_config), config or {})
H.check_type('highlighters', config.highlighters, 'table')
H.check_type('delay', config.delay, 'table')
H.check_type('delay.text_change', config.delay.text_change, 'number')
H.check_type('delay.scroll', config.delay.scroll, 'number')
return config
end
H.apply_config = function(config) MiniHipatterns.config = config end
H.create_autocommands = function()
local gr = vim.api.nvim_create_augroup('MiniHipatterns', {})
local au = function(event, pattern, callback, desc)
vim.api.nvim_create_autocmd(event, { group = gr, pattern = pattern, callback = callback, desc = desc })
end
au('BufEnter', '*', H.auto_enable, 'Enable highlighting')
au('ColorScheme', '*', H.create_default_hl, 'Ensure colors')
au('ColorScheme', '*', H.on_colorscheme, 'Reload all enabled pattern highlighters')
end
H.create_default_hl = function()
local hi_link_bold_reverse = function(to, from)
local data = vim.fn.has('nvim-0.9') == 1 and vim.api.nvim_get_hl(0, { name = from, link = false })
or vim.api.nvim_get_hl_by_name(from, true)
data.default, data.bold, data.reverse = true, true, true
data.cterm = { bold = true, reverse = true }
vim.api.nvim_set_hl(0, to, data)
end
hi_link_bold_reverse('MiniHipatternsFixme', 'DiagnosticError')
hi_link_bold_reverse('MiniHipatternsHack', 'DiagnosticWarn')
hi_link_bold_reverse('MiniHipatternsTodo', 'DiagnosticInfo')
hi_link_bold_reverse('MiniHipatternsNote', 'DiagnosticHint')
end
H.is_disabled = function(buf_id)
local buf_disable = H.get_buf_var(buf_id, 'minihipatterns_disable')
return vim.g.minihipatterns_disable == true or buf_disable == true
end
H.get_config = function(config, buf_id)
local buf_config = H.get_buf_var(buf_id, 'minihipatterns_config') or {}
return vim.tbl_deep_extend('force', MiniHipatterns.config, buf_config, config or {})
end
H.get_buf_var = function(buf_id, name)
if not vim.api.nvim_buf_is_valid(buf_id) then return nil end
return vim.b[buf_id or 0][name]
end
-- Autocommands ---------------------------------------------------------------
H.auto_enable = vim.schedule_wrap(function(data)
local buf = data.buf
if not (vim.api.nvim_buf_is_loaded(buf) and vim.bo[buf].buftype == '') then return end
MiniHipatterns.enable(buf)
end)
H.update_view = vim.schedule_wrap(function(data)
-- Update view only in enabled buffers
local buf_cache = H.cache[data.buf]
if buf_cache == nil then return end
-- NOTE: due to scheduling (which is necessary for better performance),
-- current buffer can be not the target one. But as there is no proper (easy
-- and/or fast) way to get the view of certain buffer (except the current)
-- accept this approach. The main problem of current buffer having not
-- enabled highlighting is solved during processing buffer highlighters.
-- Debounce without aggregating redraws (only last view should be updated)
H.timer_view:stop()
H.timer_view:start(buf_cache.delay.scroll, 0, H.process_view)
end)
H.on_colorscheme = function()
-- Reset created highlight groups for hex colors, as they are probably
-- cleared after `:hi clear`
H.hex_color_groups = {}
-- Reload all currently enabled buffers
for buf_id, _ in pairs(H.cache) do
MiniHipatterns.disable(buf_id)
MiniHipatterns.enable(buf_id)
end
end
-- Validators -----------------------------------------------------------------
H.validate_buf_id = function(x)
if x == nil or x == 0 then return vim.api.nvim_get_current_buf() end
if not (type(x) == 'number' and vim.api.nvim_buf_is_valid(x)) then
H.error('`buf_id` should be `nil` or valid buffer id.')
end
return x
end
H.validate_config_arg = function(x)
if x == nil or type(x) == 'table' then return x or {} end
H.error('`config` should be `nil` or table.')
end
H.validate_string = function(x, name)
if type(x) == 'string' then return x end
H.error(string.format('`%s` should be string.'))
end
-- Enabling -------------------------------------------------------------------
H.is_buf_enabled = function(buf_id) return H.cache[buf_id] ~= nil end
H.update_cache = function(buf_id, config)
local buf_cache = H.cache[buf_id] or {}
local buf_config = H.get_config(config, buf_id)
buf_cache.highlighters = H.normalize_highlighters(buf_config.highlighters)
buf_cache.delay = buf_config.delay
H.cache[buf_id] = buf_cache
end
H.normalize_highlighters = function(highlighters)
local res = {}
for hi_name, hi in pairs(highlighters) do
-- Allow pattern to be string, callable, or array of those. Convert all
-- valid cases into array of callables.
local pattern = type(hi.pattern) == 'string' and function() return hi.pattern end or hi.pattern
if vim.is_callable(pattern) then pattern = { pattern } end
local is_pattern_ok = H.islist(pattern)
if is_pattern_ok then
for i, pat in ipairs(pattern) do
pattern[i] = type(pat) == 'string' and function() return pat end or pat
is_pattern_ok = is_pattern_ok and vim.is_callable(pattern[i])
end
end
local group = type(hi.group) == 'string' and function() return hi.group end or hi.group
local extmark_opts = hi.extmark_opts or { priority = 200 }
if type(extmark_opts) == 'table' then
local t = extmark_opts
---@diagnostic disable:cast-local-type
extmark_opts = function(_, _, data)
local opts = vim.deepcopy(t)
opts.hl_group = opts.hl_group or data.hl_group
opts.end_row = opts.end_row or (data.line - 1)
opts.end_col = opts.end_col or data.to_col
return opts
end
end
if is_pattern_ok and vim.is_callable(group) and vim.is_callable(extmark_opts) then
res[hi_name] = { pattern = pattern, group = group, extmark_opts = extmark_opts }
H.ns_id[hi_name] = vim.api.nvim_create_namespace('MiniHipatterns-' .. hi_name)
end
end
return res
end
H.get_all_highlighters = function()
local hi_arr = vim.tbl_map(function(x) return { x, tostring(x) } end, vim.tbl_keys(H.ns_id))
table.sort(hi_arr, function(a, b) return a[2] < b[2] end)
return vim.tbl_map(function(x) return x[1] end, hi_arr)
end
-- Processing -----------------------------------------------------------------
H.process_lines = vim.schedule_wrap(function(buf_id, from_line, to_line, delay_ms)
-- Make sure that that at least one line is processed (important to react
-- after deleting line with extmark non-trivial `extmark_opts`)
table.insert(H.change_queue, { buf_id, math.min(from_line, to_line), math.max(from_line, to_line) })
-- Debounce
H.timer_debounce:stop()
H.timer_debounce:start(delay_ms, 0, H.process_change_queue)
end)
H.process_view = vim.schedule_wrap(function()
table.insert(H.change_queue, { vim.api.nvim_get_current_buf(), vim.fn.line('w0'), vim.fn.line('w$') })
-- Process immediately assuming debouncing should be already done
H.process_change_queue()
end)
H.process_change_queue = vim.schedule_wrap(function()
local queue = H.normalize_change_queue()
for buf_id, lines_to_process in pairs(queue) do
H.process_buffer_changes(buf_id, lines_to_process)
end
H.change_queue = {}
end)
H.normalize_change_queue = function()
local res = {}
for _, change in ipairs(H.change_queue) do
-- `change` is { buf_id, from_line, to_line }; lines are already 1-indexed
local buf_id = change[1]
local buf_lines_to_process = res[buf_id] or {}
for i = change[2], change[3] do
buf_lines_to_process[i] = true
end
res[buf_id] = buf_lines_to_process
end
return res
end
H.process_buffer_changes = vim.schedule_wrap(function(buf_id, lines_to_process)
-- Return early if buffer is not proper.
-- Also check if buffer is enabled here mostly for better resilience. It
-- might be actually needed due to various `schedule_wrap`s leading to change
-- queue entry with not target (and improper) buffer.
local buf_cache = H.cache[buf_id]
if not vim.api.nvim_buf_is_valid(buf_id) or H.is_disabled(buf_id) or buf_cache == nil then return end
-- Optimizations are done assuming small-ish number of highlighters and
-- large-ish number of lines to process
-- Process highlighters
for hi_name, hi in pairs(buf_cache.highlighters) do
-- Remove current highlights
local ns = H.ns_id[hi_name]
for l_num, _ in pairs(lines_to_process) do
H.clear_namespace(buf_id, ns, l_num - 1, l_num)
end
-- Add new highlights
for _, pattern in ipairs(hi.pattern) do
H.apply_highlighter_pattern(pattern(buf_id), hi, buf_id, ns, lines_to_process)
end
end
end)
H.apply_highlighter_pattern = vim.schedule_wrap(function(pattern, hi, buf_id, ns, lines_to_process)
-- Check again because buffer might have become invalid since latest check
if not vim.api.nvim_buf_is_valid(buf_id) then return end
if type(pattern) ~= 'string' then return end
local group, extmark_opts = hi.group, hi.extmark_opts
local pattern_has_line_start = pattern:sub(1, 1) == '^'
-- Apply per proper line
for l_num, _ in pairs(lines_to_process) do
local line = H.get_line(buf_id, l_num)
local from, to, sub_from, sub_to = line:find(pattern)
while from and (from <= to) do
-- Compute full pattern match
local full_match = line:sub(from, to)
-- Compute (possibly inferred) submatch
sub_from, sub_to = sub_from or from, sub_to or (to + 1)
-- - Make last column end-inclusive
sub_to = sub_to - 1
local match = line:sub(sub_from, sub_to)
-- Set extmark based on submatch
local data = { full_match = full_match, line = l_num, from_col = sub_from, to_col = sub_to }
local hl_group = group(buf_id, match, data)
if hl_group ~= nil then
data.hl_group = hl_group
H.set_extmark(buf_id, ns, l_num - 1, sub_from - 1, extmark_opts(buf_id, match, data))
end
-- Overcome an issue that `string.find()` doesn't recognize `^` when
-- `init` is more than 1
if pattern_has_line_start then break end
from, to, sub_from, sub_to = line:find(pattern, to + 1)
end
end
end)
-- Built-in highlighters ------------------------------------------------------
H.wrap_pattern_with_filter = function(pattern, filter)
return function(...)
if not filter(...) then return nil end
return pattern
end
end
H.compute_opposite_color = function(hex)
local dec = tonumber(hex, 16)
local b = H.correct_channel(math.fmod(dec, 256) / 255)
local g = H.correct_channel(math.fmod((dec - b) / 256, 256) / 255)
local r = H.correct_channel(math.floor(dec / 65536) / 255)
local l = 0.4122214708 * r + 0.5363325363 * g + 0.0514459929 * b
local m = 0.2119034982 * r + 0.6806995451 * g + 0.1073969566 * b
local s = 0.0883024619 * r + 0.2817188376 * g + 0.6299787005 * b
local l_, m_, s_ = H.cuberoot(l), H.cuberoot(m), H.cuberoot(s)
local L = H.correct_lightness(0.2104542553 * l_ + 0.7936177850 * m_ - 0.0040720468 * s_)
return L < 0.5 and '#ffffff' or '#000000'
end
-- Function for RGB channel correction. Assumes input in [0; 1] range
-- https://bottosson.github.io/posts/colorwrong/#what-can-we-do%3F
H.correct_channel = function(x) return 0.04045 < x and math.pow((x + 0.055) / 1.055, 2.4) or (x / 12.92) end
-- Function for lightness correction
-- https://bottosson.github.io/posts/colorpicker/#intermission---a-new-lightness-estimate-for-oklab
H.correct_lightness = function(x)
local k1, k2 = 0.206, 0.03
local k3 = (1 + k1) / (1 + k2)
return 0.5 * (k3 * x - k1 + math.sqrt((k3 * x - k1) ^ 2 + 4 * k2 * k3 * x))
end