Repository navigation
Expand file tree
/
Copy pathjump2d.lua
More file actions
1180 lines (1028 loc) · 43.5 KB
/
Copy pathjump2d.lua
File metadata and controls
1180 lines (1028 loc) · 43.5 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.jump2d* Jump within visible lines
--- *MiniJump2d*
---
--- MIT License Copyright (c) 2022 Evgeni Chasnovski
---
--- ==============================================================================
---
--- Jump within visible lines via iterative label filtering.
---
--- Features:
--- - Make jump by iterative filtering of possible, equally considered jump
--- spots until there is only one. Filtering is done by typing a label
--- character that is visualized at jump spot.
---
--- - Customizable (see |MiniJump2d.config|):
--- - Way of computing possible jump spots with opinionated default.
--- - Characters used to label jump spots during iterative filtering.
--- - Visual effects: how many steps ahead to show; dim lines with spots.
--- - Action hooks to be executed at certain events during jump.
--- - Allowed windows: current and/or not current.
--- - Allowed lines: whether to process blank or folded lines, lines
--- before/at/after cursor line, etc. Example: user can configure to look
--- for spots only inside current window at or after cursor line.
--- Example: user can configure to look for word starts only inside current
--- window at or after cursor line with 'j' and 'k' labels performing some
--- action after jump.
---
--- - Works in Visual and Operator-pending (with dot-repeat) modes.
---
--- - Preconfigured ways of computing jump spots (see |MiniJump2d.builtin_opts|):
--- - Starts of lines.
--- - Starts of words.
--- - Single character from user input.
--- - Variable length query from user input.
---
--- - Works with multibyte characters.
---
--- General overview of how jump is intended to be performed:
--- - Lock eyes on desired location ("spot") recognizable by future jump.
--- Should be within visible lines at place where cursor can be placed.
---
--- - Initiate jump. Either by custom keybinding or with a call to
--- |MiniJump2d.start()| (allows customization options). This will highlight
--- all possible jump spots with their labels (letters from "a" to "z" by
--- default). For more details, read |MiniJump2d.start()| and |MiniJump2d.config|.
---
--- - Type character that appeared over desired location. If its label was
--- unique, jump is performed. If it wasn't unique, possible jump spots are
--- filtered to those having the same label character.
---
--- - Repeat previous step until there is only one possible jump spot or type <CR>
--- to jump to first available jump spot. Typing anything else stops jumping
--- without moving cursor.
---
--- # Setup ~
---
--- This module needs a setup with `require('mini.jump2d').setup({})` (replace
--- `{}` with your `config` table). It will create global Lua table
--- `MiniJump2d` which you can use for scripting or manually (with
--- `:lua MiniJump2d.*`).
---
--- See |MiniJump2d.config| for available config settings.
---
--- You can override runtime config settings locally to buffer inside
--- `vim.b.minijump2d_config` which should have same structure as
--- `MiniJump2d.config`. See |mini.nvim-buffer-local-config| for more details.
---
--- To stop module from showing non-error feedback, set `config.silent = true`.
---
--- # Example usage ~
---
--- - Modify default jumping to use only current window at or after cursor line: >lua
---
--- require('mini.jump2d').setup({
--- allowed_lines = { cursor_before = false },
--- allowed_windows = { not_current = false },
--- })
--- <
--- - Jump to word start using combination of options supplied in
--- |MiniJump2d.config| and |MiniJump2d.builtin_opts.line_start|: >vim
---
--- :lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)
--- <
--- - Jump to a single character typed after executing this command: >vim
---
--- :lua MiniJump2d.start(MiniJump2d.builtin_opts.single_character)
--- <
--- - See more examples in |MiniJump2d.start| and |MiniJump2d.builtin_opts|.
---
--- # Comparisons ~
---
--- - 'phaazon/hop.nvim':
--- - Both are fast, customizable, and extensible (user can write their own
--- ways to define jump spots).
--- - 'hop.nvim' visualizes all steps at once. While this module can show
--- configurable number of steps ahead.
--- - Both have several builtin ways to specify type of jump (word start,
--- line start, one character or query based on user input). 'hop.nvim'
--- does that by exporting many targeted Neovim commands, while this
--- module has preconfigured basic options leaving others to
--- customization with Lua code (see |MiniJump2d.builtin_opts|).
--- - 'hop.nvim' computes labels (called "hints") differently. Contrary to
--- this module deliberately not having preference of one jump spot over
--- another, 'hop.nvim' uses specialized algorithm that produces sequence
--- of keys in a slightly biased manner: some sequences are intentionally
--- shorter than the others (leading to fewer average keystrokes). They
--- are put near cursor (by default) and highlighted differently. Final
--- order of sequences is based on distance to the cursor.
--- - 'mini.jump2d' has opinionated default algorithm of computing jump
--- spots. See |MiniJump2d.default_spotter|.
---
--- # Highlight groups ~
---
--- * `MiniJump2dSpot` - highlighting of jump spot's next step. By default it
--- uses label with highest contrast while not being too visually demanding:
--- white on black for dark 'background', black on white for light. If it
--- doesn't suit your liking, try couple of these alternatives (or choose
--- your own, of course): >lua
---
--- -- Reverse underlying colors (mostly *very* visible in any colorscheme)
--- vim.api.nvim_set_hl(0, 'MiniJump2dSpot', { reverse = true })
---
--- -- Bold italic
--- vim.api.nvim_set_hl(0, 'MiniJump2dSpot', { bold = true, italic = true })
---
--- -- Red undercurl
--- vim.api.nvim_set_hl(0, 'MiniJump2dSpot', { sp = 'Red', undercurl = true })
--- <
--- * `MiniJump2dSpotUnique` - highlighting of jump spot's next step if it has
--- unique label. By default links to `MiniJump2dSpot`.
---
--- * `MiniJump2dSpotAhead` - highlighting of jump spot's future steps. By default
--- similar to `MiniJump2dSpot` but with less contrast and visibility.
---
--- * `MiniJump2dDim` - highlighting of lines with at least one jump spot.
--- Make it non-bright in order for jump spot labels to be more visible.
--- By default linked to `Comment` highlight group.
---
--- To change any highlight group, modify it directly with |:highlight|.
---
--- # Disabling ~
---
--- To disable, set `vim.g.minijump2d_disable` (globally) or
--- `vim.b.minijump2d_disable` (for a buffer) to `true`. 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.
-- Module definition ==========================================================
local MiniJump2d = {}
local H = {}
--- Module setup
---
---@param config table|nil Module config table. See |MiniJump2d.config|.
---
---@usage >lua
--- require('mini.jump2d').setup() -- use default config
--- -- OR
--- require('mini.jump2d').setup({}) -- replace {} with your config table
--- <
MiniJump2d.setup = function(config)
-- TODO: Remove after Neovim=0.8 support is dropped
if vim.fn.has('nvim-0.9') == 0 then
vim.notify(
'(mini.jump2d) 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.MiniJump2d = MiniJump2d
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Define behavior
H.create_autocommands(config)
-- Create default highlighting
H.create_default_hl()
end
--- Module config
---
--- Default values:
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
---@text # Options ~
---
--- ## Spotter function ~
---
--- Actual computation of possible jump spots is done through spotter function.
--- It should have the following arguments:
--- - `line_num` is a line number inside buffer.
--- - `args` - table with additional arguments:
--- - {win_id} - identifier of a window where input line number is from.
--- - {win_id_init} - identifier of a window which was current when
--- `MiniJump2d.start()` was called.
---
--- Its output is a list of byte-indexed positions that should be considered as
--- possible jump spots for this particular line in this particular window.
--- Note: for a more aligned visualization this list should be (but not
--- strictly necessary) sorted increasingly.
---
--- Note: spotter function is always called with `win_id` window being
--- "temporary current" (see |nvim_win_call|). This allows using builtin
--- Vimscript functions that operate only inside current window.
---
--- ## View ~
---
--- Option `view.n_steps_ahead` controls how many steps ahead to show along
--- with the currently required label. Those future steps are showed with
--- different (less visible) highlight group ("MiniJump2dSpotAhead"). Usually
--- it is a good idea to use this with a spotter which doesn't result into many
--- jump spots (like, for example, |MiniJump2d.builtin_opts.word_start|).
--- Default is 0 to not show anything ahead as it reduces visual noise.
---
--- Option `view.dim` controls whether to dim lines with at least one jump spot.
--- Dimming is done by applying "MiniJump2dDim" highlight group to the whole line.
---
--- ## Allowed lines ~
---
--- Option `allowed_lines` controls which lines will be used for computing
--- possible jump spots:
--- - If `blank` or `fold` is `true`, it is possible to jump to first column of blank
--- line (determined by |prevnonblank|) or first folded one (determined by
--- |foldclosed|) respectively. Otherwise they are skipped. These lines are
--- not processed by spotter function even if the option is `true`.
--- - If `cursor_before`, (`cursor_at`, `cursor_after`) is `true`, lines before
--- (at, after) cursor line of all processed windows are forwarded to spotter
--- function. Otherwise, they don't. This allows control of jump "direction".
---
--- ## Hooks ~
---
--- Following hook functions can be used to further tweak jumping experience:
--- - `before_start` - called without arguments first thing when jump starts.
--- One of the possible use cases is to ask for user input and update spotter
--- function with it.
--- - `after_jump` - called after jump was actually done. Useful to make
--- post-adjustments (like move cursor to first non-whitespace character).
MiniJump2d.config = {
-- Function producing jump spots (byte indexed) for a particular line.
-- For more information see |MiniJump2d.start|.
-- If `nil` (default) - use |MiniJump2d.default_spotter|
spotter = nil,
-- Characters used for labels of jump spots (in supplied order)
labels = 'abcdefghijklmnopqrstuvwxyz',
-- Options for visual effects
view = {
-- Whether to dim lines with at least one jump spot
dim = false,
-- How many steps ahead to show. Set to big number to show all steps.
n_steps_ahead = 0,
},
-- Which lines are used for computing spots
allowed_lines = {
blank = true, -- Blank line (not sent to spotter even if `true`)
cursor_before = true, -- Lines before cursor line
cursor_at = true, -- Cursor line
cursor_after = true, -- Lines after cursor line
fold = true, -- Start of fold (not sent to spotter even if `true`)
},
-- Which windows from current tabpage are used for visible lines
allowed_windows = {
current = true,
not_current = true,
},
-- Functions to be executed at certain events
hooks = {
before_start = nil, -- Before jump start
after_jump = nil, -- After jump was actually done
},
-- Module mappings. Use `''` (empty string) to disable one.
mappings = {
start_jumping = '<CR>',
},
-- Whether to disable showing non-error feedback
-- This also affects (purely informational) helper messages shown after
-- idle time if user input is required.
silent = false,
}
--minidoc_afterlines_end
-- Module functionality =======================================================
--- Start jumping
---
--- Compute possible jump spots, visualize them and wait for iterative filtering.
8BD0
---
--- First computation of possible jump spots ~
---
--- - Process allowed windows (current and/or not current; controlled by
--- `allowed_windows` option) by visible lines from top to bottom. For each
--- one see if it is allowed (controlled by `allowed_lines` option). If not
--- allowed, then do nothing. If allowed and should be processed by
--- `spotter`, process it.
--- - Apply spotter function from `spotter` option for each appropriate line
--- and concatenate outputs. This means that eventual order of jump spots
--- aligns with lexicographical order within "window id" - "line number" -
--- "position in `spotter` output" tuples.
--- - For each possible jump compute its label: a single character from
--- `labels` option used to filter jump spots. Each possible label character
--- might be used more than once to label several "consecutive" jump spots.
--- It is done in an optimal way under assumption of no preference of one
--- spot over another. Basically, it means "use all labels at each step of
--- iterative filtering as equally as possible".
---
--- Visualization ~
---
--- Current label for each possible jump spot is shown at that position
--- overriding everything underneath it.
---
--- Iterative filtering ~
---
--- Labels of possible jump spots are computed in order to use them as equally
--- as possible.
---
--- Example:
--- - With `abc` as `labels` option, initial labels for 10 possible jumps
--- are "aaaabbbccc". As there are 10 spots which should be "coded" with 3
--- symbols, at least 2 symbols need 3 steps to filter them out. With current
--- implementation those are always the "first ones".
--- - After typing `a`, it filters first four jump spots and recomputes its
--- labels to be "aabc".
--- - After typing `a` again, it filters first two spots and recomputes its
--- labels to be "ab".
--- - After typing either `a` or `b` it filters single spot and makes jump.
---
--- With default 26 labels for most real-world cases 2 steps is enough for
--- default spotter function. Rarely 3 steps are needed with several windows.
---
---@param opts table|nil Configuration of jumping, overriding global and buffer
--- local values.config|. Has the same structure as |MiniJump2d.config|
--- without <mappings> field. Extra allowed fields:
--- - <hl_group> - which highlight group to use for first step.
--- Default: "MiniJump2dSpot".
--- - <hl_group_ahead> - which highlight group to use for second step and later.
--- Default: "MiniJump2dSpotAhead".
--- - <hl_group_dim> - which highlight group to use dimming used lines.
--- Default: "MiniJump2dSpotDim".
---
---@usage >lua
--- -- Start default jumping
--- MiniJump2d.start()
---
--- -- Jump to word start
--- MiniJump2d.start(MiniJump2d.builtin_opts.word_start)
---
--- -- Jump to single character from user input (follow by typing one character)
--- MiniJump2d.start(MiniJump2d.builtin_opts.single_character)
---
--- -- Jump to first character of punctuation group only inside current window
--- -- which is placed at cursor line; visualize with `Search`
--- MiniJump2d.start({
--- spotter = MiniJump2d.gen_pattern_spotter('%p+'),
--- allowed_lines = { cursor_before = false, cursor_after = false },
--- allowed_windows = { not_current = false },
--- hl_group = 'Search'
--- })
---<
---@seealso |MiniJump2d.config|
MiniJump2d.start = function(opts)
if H.is_disabled() then return end
opts = opts or {}
-- Apply `before_start` before `tbl_deep_extend` to allow it modify options
-- inside it (notably `spotter`). Example: `builtins.single_character`.
local before_start = (opts.hooks or {}).before_start
or ((vim.b.minijump2d_config or {}).hooks or {}).before_start
or MiniJump2d.config.hooks.before_start
if before_start ~= nil then before_start() end
opts = H.get_config(opts)
opts.spotter = opts.spotter or MiniJump2d.default_spotter
opts.hl_group = opts.hl_group or 'MiniJump2dSpot'
opts.hl_group_ahead = opts.hl_group_ahead or 'MiniJump2dSpotAhead'
opts.hl_group_unique = opts.hl_group_unique or 'MiniJump2dSpotUnique'
opts.hl_group_dim = opts.hl_group_dim or 'MiniJump2dDim'
local spots = H.spots_compute(opts)
if #spots == 0 then
H.message('No spots to show.')
return
end
if #spots == 1 then
H.perform_jump(spots[1], opts.hooks.after_jump)
return
end
local label_tbl = vim.split(opts.labels, '')
spots = H.spots_add_steps(spots, label_tbl, opts.view.n_steps_ahead)
H.spots_show(spots, opts)
H.cache.spots = spots
H.advance_jump(opts)
end
--- Stop jumping
MiniJump2d.stop = function()
H.spots_unshow()
H.cache.spots = nil
H.cache.msg_shown = false
vim.cmd('redraw')
if H.cache.is_in_getcharstr then vim.api.nvim_input('<C-c>') end
end
--- Generate spotter for Lua pattern
---
---@param pattern string|nil Lua pattern. Default: `'[^%s%p]+'` which matches group
--- of "non-whitespace non-punctuation characters" (basically a way of saying
--- "group of alphanumeric characters" that works with multibyte characters).
---@param side string|nil Which side of pattern match should be considered as
--- jumping spot. Should be one of 'start' (start of match, default), 'end'
--- (inclusive end of match), or 'none' (match for spot is done manually
--- inside pattern with plain `()` matching group).
---
---@return function Spotter function.
---
---@usage >lua
--- -- Match any punctua
10000
tion
--- MiniJump2d.gen_pattern_spotter('%p')
---
--- -- Match first from line start non-whitespace character
--- MiniJump2d.gen_pattern_spotter('^%s*%S', 'end')
---
--- -- Match start of last word
--- MiniJump2d.gen_pattern_spotter('[^%s%p]+[%s%p]-$', 'start')
---
--- -- Match letter followed by another letter (example of manual matching
--- -- inside pattern)
--- MiniJump2d.gen_pattern_spotter('%a()%a', 'none')
--- <
MiniJump2d.gen_pattern_spotter = function(pattern, side)
-- Don't use `%w` to account for multibyte characters
pattern = pattern or '[^%s%p]+'
side = side or 'start'
-- Process anchored patterns separately because:
-- - `gmatch()` doesn't work if pattern start with `^`.
-- - Manual adding of `()` will conflict with anchors.
local is_anchored = pattern:sub(1, 1) == '^' or pattern:sub(-1, -1) == '$'
if is_anchored then
return function(line_num, args)
local line = vim.fn.getline(line_num)
local s, e, m = line:find(pattern)
return { ({ ['start'] = s, ['end'] = e, ['none'] = m })[side] }
end
end
-- Handle `side = 'end'` later by appending length of match to match start.
-- This, unlike appending `()` to end of pattern, makes output spot to be
-- inside matched pattern and on its exact right.
-- Having `(%s)` for `side = 'none'` is for compatibility with later `gmatch`
local pattern_template = side == 'none' and '(%s)' or '(()%s)'
pattern = pattern_template:format(pattern)
return function(line_num, args)
local line = vim.fn.getline(line_num)
local res = {}
-- NOTE: maybe a more straightforward approach would be a series of
-- `line:find(original_pattern, init)` with moving `init`, but it has some
-- weird behavior with quantifiers.
-- For example: `string.find(' --', '%s*', 4)` returns `4 3`.
for whole, spot in string.gmatch(line, pattern) do
-- Possibly correct spot to be index of last matched position
if side == 'end' then spot = spot + math.max(whole:len() - 1, 0) end
-- Ensure that index is strictly within line length (which can be not
-- true in case of weird pattern, like when using frontier `%f[%W]`)
spot = math.min(math.max(spot, 0), line:len())
-- Unify how spot is chosen in case of multibyte characters
-- Use `+-1` to make sure that result it at start of multibyte character
local utf_index = vim.str_utfindex(line, spot) - 1
spot = vim.str_byteindex(line, utf_index) + 1
-- Add spot only if it referces new actually visible column
if spot ~= res[#res] then table.insert(res, spot) end
end
return res
end
end
--- Generate union of spotters
---
---@param ... any Each argument should be a valid spotter.
--- See |MiniJump2d.config| for more details.
---
---@return function Spotter producing union of spots.
---
---@usage >lua
--- -- Match start and end of non-blank character groups:
--- local nonblank_start = MiniJump2d.gen_pattern_spotter('%S+', 'start')
--- local nonblank_end = MiniJump2d.gen_pattern_spotter('%S+', 'end')
--- local spotter = MiniJump2d.gen_union_spotter(nonblank_start, nonblank_end)
--- <
MiniJump2d.gen_union_spotter = function(...)
local spotters = { ... }
if #spotters == 0 then return function() return {} end end
local is_all_callable = true
for _, x in ipairs(spotters) do
if not vim.is_callable(x) then is_all_callable = false end
end
if not is_all_callable then H.error('All `gen_union_spotter()` arguments should be callable elements.') end
return function(line_num, args)
local res = spotters[1](line_num, args)
for i = 2, #spotters do
res = H.merge_unique(res, spotters[i](line_num, args))
end
return res
end
end
--- Default spotter function
---
--- Spot is possible for jump if it is one of the following:
--- - Start or end of non-whitespace character group.
--- - Alphanumeric character followed or preceded by punctuation (useful for
--- snake case names).
--- - Start of uppercase character group (useful for camel case names). Usually
--- only Latin alphabet is recognized due to Lua patterns shortcomings.
---
--- These rules are derived in an attempt to balance between two intentions:
--- - Allow as much useful jumping spots as possible.
--- - Make labeled jump spots easily distinguishable.
---
--- Usually takes from 2 to 3 keystrokes to get to destination.
MiniJump2d.default_spotter = (function()
-- NOTE: not using `MiniJump2d.gen_union_spotter()` due to slightly better
-- algorithmic complexity merging small arrays first.
local nonblank_start = MiniJump2d.gen_pattern_spotter('%S+', 'start')
local nonblank_end = MiniJump2d.gen_pattern_spotter('%S+', 'end')
-- Use `[^%s%p]` as "alphanumeric" to allow working with multibyte characters
local alphanum_before_punct = MiniJump2d.gen_pattern_spotter('[^%s%p]%p', 'start')
local alphanum_after_punct = MiniJump2d.gen_pattern_spotter('%p[^%s%p]', 'end')
-- NOTE: works only with Latin alphabet
local upper_start = MiniJump2d.gen_pattern_spotter('%u+', 'start')
return function(line_num, args)
local res_1 = H.merge_unique(nonblank_start(line_num, args), nonblank_end(line_num, args))
local res_2 = H.merge_unique(alphanum_before_punct(line_num, args), alphanum_after_punct(line_num, args))
local res = H.merge_unique(res_1, res_2)
return H.merge_unique(res, upper_start(line_num, args))
end
end)()
--- Table with builtin `opts` values for |MiniJump2d.start()|
---
--- Each element of table is itself a table defining one or several options for
--- `MiniJump2d.start()`. Read help description to see which options it defines
--- (like in |MiniJump2d.builtin_opts.line_start|).
---
---@usage >lua
--- -- Using `MiniJump2d.builtin_opts.line_start` as example:
--- -- Command
--- :lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)
---
--- -- Custom mapping
--- vim.keymap.set(
--- 'n', '<CR>',
--- '<Cmd>lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)<CR>'
--- )
---
--- -- Inside `MiniJump2d.setup()` (make sure to use all defined options)
--- local jump2d = require('mini.jump2d')
--- local jump_line_start = jump2d.builtin_opts.line_start
--- jump2d.setup({
--- spotter = jump_line_start.spotter,
--- hooks = { after_jump = jump_line_start.hooks.after_jump }
--- })
--- <
MiniJump2d.builtin_opts = {}
--- Jump with |MiniJump2d.default_spotter()|
---
--- Defines `spotter`.
MiniJump2d.builtin_opts.default = { spotter = MiniJump2d.default_spotter }
--- Jump to line start
---
--- Defines `spotter` and `hooks.after_jump`.
MiniJump2d.builtin_opts.line_start = {
spotter = function(line_num, args) return { 1 } end,
hooks = {
after_jump = function()
-- Move to first non-blank character
vim.cmd('normal! ^')
end,
},
}
--- Jump to word start
---
--- Defines `spotter`.
MiniJump2d.builtin_opts.word_start = { spotter = MiniJump2d.gen_pattern_spotter('[^%s%p]+') }
-- Produce `opts` which modifies spotter based on user input
local function user_input_opts(input_fun)
local res = {
spotter = function() return {} end,
allowed_lines = { blank = false, fold = false },
}
res.hooks = {
before_start = function()
local input = input_fun()
if input == nil then
res.spotter = function() return {} end
else
local pattern = vim.pesc(input)
res.spotter = MiniJump2d.gen_pattern_spotter(pattern)
end
end,
}
return res
end
--- Jump to single character taken from user input
---
--- Defines `spotter`, `allowed_lines.blank`, `allowed_lines.fold`, and
--- `hooks.before_start`.
MiniJump2d.builtin_opts.single_character = user_input_opts(
function() return H.getcharstr('Enter single character to search') end
)
--- Jump to query taken from user input
---
--- Defines `spotter`, `allowed_lines.blank`, `allowed_lines.fold`, and
--- `hooks.before_start`.
MiniJump2d.builtin_opts.query = user_input_opts(function() return H.input('Enter query to search') end)
-- Helper data ================================================================
-- Module default config
H.default_config = vim.deepcopy(MiniJump2d.config)
-- Namespaces to be used within module
H.ns_id = {
dim = vim.api.nvim_create_namespace('MiniJump2dDim'),
spots = vim.api.nvim_create_namespace('MiniJump2dSpots'),
input = vim.api.nvim_create_namespace('MiniJump2dInput'),
}
-- Table with current relevant data:
H.cache = {
-- Array of shown spots
spots = nil,
-- Indicator of whether Neovim is currently in "getcharstr" mode
is_in_getcharstr = false,
-- Whether helper message was shown
msg_shown = false,
}
-- Table with special keys
H.keys = {
esc = vim.api.nvim_replace_termcodes('<Esc>', true, true, true),
cr = vim.api.nvim_replace_termcodes('<CR>', true, true, true),
block_operator_pending = vim.api.nvim_replace_termcodes('no<C-V>', true, true, true),
}
-- 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('spotter', config.spotter, 'function', true)
H.check_type('labels', config.labels, 'string')
H.check_type('view', config.view, 'table')
H.check_type('view.dim', config.view.dim, 'boolean')
H.check_type('view.n_steps_ahead', config.view.n_steps_ahead, 'number')
H.check_type('allowed_lines', config.allowed_lines, 'table')
H.check_type('allowed_lines.blank', config.allowed_lines.blank, 'boolean')
H.check_type('allowed_lines.cursor_before', config.allowed_lines.cursor_before, 'boolean')
H.check_type('allowed_lines.cursor_at', config.allowed_lines.cursor_at, 'boolean')
H.check_type('allowed_lines.cursor_after', config.allowed_lines.cursor_after, 'boolean')
H.check_type('allowed_lines.fold', config.allowed_lines.fold, 'boolean')
H.check_type('allowed_windows', config.allowed_windows, 'table')
H.check_type('allowed_windows.current', config.allowed_windows.current, 'boolean')
H.check_type('allowed_windows.not_current', config.allowed_windows.not_current, 'boolean')
H.check_type('hooks', config.hooks, 'table')
H.check_type('hooks.before_start', config.hooks.before_start, 'function', true)
H.check_type('hooks.after_jump', config.hooks.after_jump, 'function', true)
H.check_type('mappings', config.mappings, 'table')
H.check_type('mappings.start_jumping', config.mappings.start_jumping, 'string')
H.check_type('silent', config.silent, 'boolean')
return config
end
H.apply_config = function(config)
MiniJump2d.config = config
-- Apply mappings
local keymap = config.mappings.start_jumping
H.map('n', keymap, MiniJump2d.start, { desc = 'Start 2d jumping' })
H.map('x', keymap, MiniJump2d.start, { desc = 'Start 2d jumping' })
-- Use `<Cmd>...<CR>` to have proper dot-repeat
-- See https://github.com/neovim/neovim/issues/23406
-- TODO: use local functions if/when that issue is resolved
H.map('o', keymap, '<Cmd>lua MiniJump2d.start()<CR>', { desc = 'Start 2d jumping' })
end
H.create_autocommands = function(config)
local gr = vim.api.nvim_create_augroup('MiniJump2d', {})
local au = function(event, pattern, callback, desc)
vim.api.nvim_create_autocmd(event, { pattern = pattern, group = gr, callback = callback, desc = desc })
end
-- Corrections for default `<CR>` mapping to not interfere with popular usages
if config.mappings.start_jumping == '<CR>' then
local revert_cr = function() vim.keymap.set('n', '<CR>', '<CR>', { buffer = true }) end
au('FileType', 'qf', revert_cr, 'Revert <CR>')
au('CmdwinEnter', '*', revert_cr, 'Revert <CR>')
end
au('ColorScheme', '*', H.create_default_hl, 'Ensure colors')
end
--stylua: ignore
H.create_default_hl = function()
local set_default_hl = function(name, data)
data.default = true
vim.api.nvim_set_hl(0, name, data)
end
local is_light_bg = vim.o.background == 'light'
local bg_color = is_light_bg and 'white' or 'black'
local fg_color = is_light_bg and 'black' or 'white'
set_default_hl('MiniJump2dSpot', { fg = fg_color, bg = bg_color, bold = true, nocombine = true })
set_default_hl('MiniJump2dSpotAhead', { fg = 'grey', bg = bg_color, nocombine = true })
set_default_hl('MiniJump2dSpotUnique', { link = 'MiniJump2dSpot' })
set_default_hl('MiniJump2dDim', { link = 'Comment' })
end
H.is_disabled = function() return vim.g.minijump2d_disable == true or vim.b.minijump2d_disable == true end
H.get_config = function(config)
return vim.tbl_deep_extend('force', MiniJump2d.config, vim.b.minijump2d_config or {}, config or {})
end
-- Jump spots -----------------------------------------------------------------
H.spots_compute = function(opts)
local win_id_init = vim.api.nvim_get_current_win()
local win_id_arr = vim.tbl_filter(function(win_id)
if win_id == win_id_init then return opts.allowed_windows.current end
return opts.allowed_windows.not_current
end, H.tabpage_list_wins(0))
local res = {}
for _, win_id in ipairs(win_id_arr) do
vim.api.nvim_win_call(win_id, function()
local cursor_pos = vim.api.nvim_win_get_cursor(win_id)
local spotter_args = { win_id = win_id, win_id_init = win_id_init }
local buf_id = vim.api.nvim_win_get_buf(win_id)
-- Use all currently visible lines
for i = vim.fn.line('w0'), vim.fn.line('w$') do
local columns = H.spot_find_in_line(i, spotter_args, opts, cursor_pos)
-- Use all returned columns for particular line
for _, col in ipairs(columns) do
table.insert(res, { line = i, column = col, buf_id = buf_id, win_id = win_id })
end
end
end)
end
return res
end
H.spots_add_steps = function(spots, label_tbl, n_steps_ahead)
-- Compute all required steps
local steps = {}
for _ = 1, #spots do
table.insert(steps, {})
end
H.populate_spot_steps(steps, label_tbl, 1, n_steps_ahead + 1)
for i, spot in ipairs(spots) do
spot.steps = steps[i]
end
return spots
end
---@param spot_steps_arr table Array of step arrays. Single step array consists
--- from labels user needs to press in order to filter out the spot. Example:
--- { { 'a', 'a' }, { 'a', 'b' }, { 'b' } }
---
---@return nil Modifies `spot_steps_arr` in place.
---@private
H.populate_spot_steps = function(spot_steps_arr, label_tbl, cur_step, max_step)
local n_spots, n_label_chars = #spot_steps_arr, #label_tbl
if n_spots <= 1 or max_step < cur_step then return end
-- Adding labels for specific step is done by distributing all available
-- labels as equally as possible by repeating labels in their order.
-- Example: with 3 label characters labels should evolve with progressing
-- number of spots like this: 'a', 'ab', 'abc', 'aabc', 'aabbc', 'aabbcc',
-- 'aaabbcc', 'aaabbbcc', 'aaabbbccc', etc.
local base, extra = math.floor(n_spots / n_label_chars), n_spots % n_label_chars
-- `cur_label_spot_steps` is an array of spot steps which are expanded with
-- the same label. It is used to initiate computing all steps needed.
local label_id, cur_label_spot_steps = 1, {}
local label_max_count = base + (label_id <= extra and 1 or 0)
for _, spot_steps in ipairs(spot_steps_arr) do
table.insert(spot_steps, label_tbl[label_id])
table.insert(cur_label_spot_steps, spot_steps)
if #cur_label_spot_steps >= label_max_count then
H.populate_spot_steps(cur_label_spot_steps, label_tbl, cur_step + 1, max_step)
label_id, cur_label_spot_steps = label_id + 1, {}
label_max_count = base + (label_id <= extra and 1 or 0)
end
end
end
H.spots_show = function(spots, opts)
spots = spots or H.cache.spots or {}
local set_extmark = vim.api.nvim_buf_set_extmark
-- Add extmark with proper virtual text to jump spots
local dim_buf_lines = {}
for _, extmark in ipairs(H.spots_to_extmarks(spots, opts)) do
local extmark_opts = {
hl_mode = 'combine',
-- Use very high priority
priority = 1000,
virt_text = extmark.virt_text,
virt_text_pos = 'overlay',
}
local buf_id, line = extmark.buf_id, extmark.line
pcall(set_extmark, buf_id, H.ns_id.spots, line, extmark.col, extmark_opts)
-- Register lines to dim
local lines = dim_buf_lines[buf_id] or {}
lines[line] = true
dim_buf_lines[buf_id] = lines
end
-- Possibly dim used lines
if opts.view.dim then
local extmark_opts = { end_col = 0, hl_eol = true, hl_group = opts.hl_group_dim, priority = 999 }
for buf_id, lines in pairs(dim_buf_lines) do
for _, l_num in ipairs(vim.tbl_keys(lines)) do
extmark_opts.end_line = l_num + 1
pcall(set_extmark, buf_id, H.ns_id.dim, l_num, 0, extmark_opts)
end
end
end
-- Redraw to force showing marks
vim.cmd('redraw')
end
H.spots_unshow = function(spots)
spots = spots or H.cache.spots or {}
-- Remove spot extmarks from all buffers they are present
local buf_ids = {}
for _, s in ipairs(spots) do
buf_ids[s.buf_id] = true
end
for _, buf_id in ipairs(vim.tbl_keys(buf_ids)) do
pcall(vim.api.nvim_buf_clear_namespace, buf_id, H.ns_id.spots, 0, -1)
pcall(vim.api.nvim_buf_clear_namespace, buf_id, H.ns_id.dim, 0, -1)
end
end
--- Convert consecutive spot labels into single extmark
---
--- This considerably increases performance in case of many spots.
---@private
H.spots_to_extmarks = function(spots, opts)
if #spots == 0 then return {} end
local hl_group, hl_group_ahead, hl_group_unique = opts.hl_group, opts.hl_group_ahead, opts.hl_group_unique
-- Compute counts for first step in order to distinguish which highlight
-- group to use: `hl_group` or `hl_group_unique`
local first_step_counts = {}
for _, s in ipairs(spots) do
local cur_first_step = s.steps[1]
local cur_count = first_step_counts[cur_first_step] or 0
first_step_counts[cur_first_step] = cur_count + 1
end
-- Define how steps for single spot are added to virtual text
local append_to_virt_text = function(virt_text_arr, steps, n_steps_to_show)
-- Use special group if current first step is unique
local first_hl_group = first_step_counts[steps[1]] == 1 and hl_group_unique or hl_group
table.insert(virt_text_arr, { steps[1], first_hl_group })
-- Add ahead steps only if they are present
local ahead_label = table.concat(steps):sub(2, n_steps_to_show)
if ahead_label ~= '' then table.insert(virt_text_arr, { ahead_label, hl_group_ahead }) end
end
-- Convert all spots to array of extmarks
local res = {}
local buf_id, line, col, virt_text = spots[1].buf_id, spots[1].line - 1, spots[1].column - 1, {}
for i = 1, #spots - 1 do
local cur_spot, next_spot = spots[i], spots[i + 1]
local n_steps = #cur_spot.steps
-- Find which spot steps can be shown
local is_in_same_line = cur_spot.buf_id == next_spot.buf_id and cur_spot.line == next_spot.line
local max_allowed_steps = is_in_same_line and (next_spot.column - cur_spot.column) or math.huge
local n_steps_to_show = math.min(n_steps, max_allowed_steps)
-- Add text for shown steps
append_to_virt_text(virt_text, cur_spot.steps, n_steps_to_show)
-- Finish creating extmark if next spot is far enough
local next_is_close = is_in_same_line and n_steps == max_allowed_steps
if not next_is_close then
table.insert(res, { buf_id = buf_id, line = line, col = col, virt_text = virt_text })
buf_id, line, col, virt_text = next_spot.buf_id, next_spot.line - 1, next_spot.column - 1, {}
end
end
local last_steps = spots[#spots].steps
append_to_virt_text(virt_text, last_steps, #last_steps)
table.insert(res, { buf_id = buf_id, line = line, col = col, virt_text = virt_text })
return res
end
H.spot_find_in_line = function(line_num, spotter_args, opts, cursor_pos)
local allowed = opts.allowed_lines
-- Adjust for cursor line
local cur_line = cursor_pos[1]
if
(not allowed.cursor_before and line_num < cur_line)
or (not allowed.cursor_at and line_num == cur_line)
or (not allowed.cursor_after and line_num > cur_line)
then
return {}
end
-- Process folds
local fold_indicator = vim.fn.foldclosed(line_num)
if fold_indicator ~= -1 then return (allowed.fold and fold_indicator == line_num) and { 1 } or {} end
-- Process blank lines
if vim.fn.prevnonblank(line_num) ~= line_num then return allowed.blank and { 1 } or {} end
-- Finally apply spotter
return opts.spotter(line_num, spotter_args)
end
-- Jump state -----------------------------------------------------------------
H.advance_jump = function(opts)
local label_tbl = vim.split(opts.labels, '')
local spots = H.cache.spots
local n_steps_ahead = opts.view.n_steps_ahead
if type(spots) ~= 'table' or #spots < 1 then
H.spots_unshow(spots)
H.cache.spots = nil
return
end
local key = H.getcharstr('Enter encoding symbol to advance jump')
if vim.tbl_contains(label_tbl, key) then