Repository navigation
Expand file tree
/
Copy pathcompletion.lua
More file actions
2064 lines (1787 loc) · 88.7 KB
/
Copy pathcompletion.lua
File metadata and controls
2064 lines (1787 loc) · 88.7 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
8000
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.completion* Completion and signature help
---
--- MIT License Copyright (c) 2021 Evgeni Chasnovski
--- Key design ideas:
--- - Have an async (with customizable "debounce" delay) "two-stage chain
--- completion": first try to get completion items from LSP client (if set
--- up) and if no result, fallback to custom action.
---
--- - Managing completion is done as much with Neovim's built-in tools as
--- possible. |popupmenu-completion| is used to show completion suggestions.
---
--- Features:
--- - Two-stage chain completion:
--- - First stage is an LSP completion implemented via
--- |MiniCompletion.completefunc_lsp()|. It should be set up as either
--- |'completefunc'| or |'omnifunc'|. It tries to get completion items from
--- LSP client (via 'textDocument/completion' request). Custom
--- preprocessing of response items is possible (with
--- `MiniCompletion.config.lsp_completion.process_items`), for example
--- with fuzzy matching. By default items directly starting with completed
--- word are kept and are sorted according to LSP specification.
--- Supports `additionalTextEdits`, like auto-import and others (see 'Notes'),
--- and snippet items (best results require |mini.snippets| dependency).
--- - If first stage is not set up or resulted into no candidates, fallback
--- action is executed. The most tested actions are Neovim's built-in
--- insert completion (see |ins-completion|).
---
--- - Automatic display in floating window of completion item info (via
--- 'completionItem/resolve' request) and signature help (with highlighting
--- of active parameter if LSP server provides such information).
--- Signature help is shown if character to cursor's left is a dedicated trigger
--- character (configured in `signatureHelpProvider.triggerCharacters` of LSP
--- server capabilities) and updated without delay if is currently opened.
--- Already shown window for signature help is fixed and is closed when there
--- is nothing to show, its text is different, or when leaving Insert mode.
--- Scroll in either info/signature window with `<C-f>` / `<C-b>` (by default).
---
--- - Automatic actions are done after some configurable amount of delay. This
--- reduces computational load and allows fast typing (completion and
--- signature help) and item selection (item info)
---
--- - Force two-stage/fallback completion (`<C-Space>` / `<A-Space>` by default).
---
--- - Customizable highlighting of LSP items. Requires Neovim>=0.11.
--- Use `config.lsp_completion.process_items` to set dedicated highlight group
--- in supported fields:
--- - <abbr_hlgroup> - item label (`abbr` in terms of |complete-items|).
--- By default only checks if item is marked as deprecated and sets
--- `MiniCompletionDeprecated` highlight group.
--- - <kind_hlgroup> - LSP kind ("Function", "Keyword", etc.). By default
--- uses "lsp" category of |mini.icons| (if enabled).
---
--- What it doesn't do:
--- - Many configurable sources.
--- - Automatic mapping of `<CR>`, `<Tab>`, etc. Those tend to have highly
--- variable user expectations. See 'Helpful mappings' for suggestions or
--- use |MiniKeymap.map_multistep()| with `"pmenu_*"` built-in steps.
---
--- # Dependencies ~
---
--- Suggested dependencies (provide extra functionality, will work without them):
---
--- - Enabled |mini.icons| module to highlight LSP kind (requires Neovim>=0.11).
--- If absent, |MiniCompletion.default_process_items()| does not add highlighting.
--- Also take a look at |MiniIcons.tweak_lsp_kind()|.
--- - Enabled |mini.snippets| module for better snippet handling (much recommended).
--- If absent and custom snippet insert is not configured, |vim.snippet.expand()|
--- is used on Neovim>=0.10 (nothing extra is done on earlier versions).
--- See |MiniCompletion.default_snippet_insert()|.
---
--- # Setup ~
---
--- This module needs a setup with `require('mini.completion').setup({})`
--- (replace `{}` with your `config` table). It will create global Lua table
--- `MiniCompletion` which you can use for scripting or manually (with
--- `:lua MiniCompletion.*`).
---
--- See |MiniCompletion.config| for `config` structure and default values.
---
--- You can override runtime config settings locally to buffer inside
--- `vim.b.minicompletion_config` which should have same structure as
--- `MiniCompletion.config`. See |mini.nvim-buffer-local-config| for more details.
---
--- # Suggested option values ~
---
--- Some options are set automatically (if not set before |MiniCompletion.setup()|):
--- - 'completeopt' is set to "menuone,noselect" for less intrusive popup.
--- To enable fuzzy matching, manually set to "menuone,noselect,fuzzy". Consider
--- also adding "nosort" flag to preserve initial order when filtering.
--- - 'shortmess' is appended with "c" flag for silent <C-n> fallback.
--- - 'complete' gets removed "t" flag (if fallback action is default), as it
--- leads to visible lags.
---
--- # Snippets ~
---
--- As per LSP specification, some completion items can be supplied in the form of
--- snippet - a template with both pre-defined text and places (called "tabstops")
--- for user to interactively change/add text during snippet session.
---
--- In 'mini.completion' items that will insert snippet have "S" symbol shown in
--- the popup (as part of `menu` in |complete-items|). To actually insert a snippet:
--- - Select an item via <C-n> / <C-p>. This will insert item's label (usually not
--- full snippet) first to reduce visual flicker. The full snippet text will be
--- shown in info window if LSP server doesn't provide its own info for an item.
--- - Press <C-y> (|complete_CTRL-Y|) or attempt inserting a non-keyword character
--- (like <CR>; new character will be removed). It will clear text from previous
--- step, set cursor, and call `lsp_completion.snippet_insert` with snippet text.
--- - Press <C-e> (|complete_CTRL-E|) to cancel snippet insert and properly end
--- completion.
---
--- See |MiniCompletion.default_snippet_insert()| for overview of how to work with
--- inserted snippets.
---
--- Notes:
--- - To stop LSP server from suggesting snippets, disable (set to `false`) the
--- following capability during LSP server start:
--- `textDocument.completion.completionItem.snippetSupport`.
--- - If snippet body doesn't contain tabstop, variable, tab, or newline,
--- `lsp_completion.snippet_insert` is not called and text is inserted as-is.
---
--- # Notes ~
---
--- - A more appropriate (albeit slightly advanced) LSP completion setup is to set
--- it not on every |BufEnter| event (default), but on every attach of LSP client.
--- To do that:
--- - Use in |MiniCompletion.setup()| config: >lua
---
--- lsp_completion = { source_func = 'omnifunc', auto_setup = false }
--- <
--- - Set 'omnifunc' option to exactly `v:lua.MiniCompletion.completefunc_lsp`
--- for every client attach in an |LspAttach| event. Like this: >lua
---
--- local on_attach = function(args)
--- vim.bo[args.buf].omnifunc = 'v:lua.MiniCompletion.completefunc_lsp'
--- end
--- vim.api.nvim_create_autocmd('LspAttach', { callback = on_attach })
--- <
--- This setup is not default to allow simultaneous usage of filetype-specific
--- 'omnifunc' (with manual |i_CTRL-X_CTRL-O|) and automated LSP completion.
---
--- - Use |MiniCompletion.get_lsp_capabilities()| to get/set information about part
--- of LSP specification supported by module. See its help for usability notes.
---
--- - Uses `vim.lsp.protocol.CompletionItemKind` map in LSP step to show a readable
--- version of item's kind. Modify it directly to change what is displayed.
--- If you have |mini.icons| enabled, take a look at |MiniIcons.tweak_lsp_kind()|.
---
--- - If you have trouble using custom (overridden) |vim.ui.input()|, disable
--- 'mini.completion' for input buffer (usually based on its 'filetype').
---
--- # Comparisons ~
---
--- - [hrsh7th/nvim-cmp](https://github.com/hrsh7th/nvim-cmp):
--- - Implements own popup menu to show completion candidates, while this
--- module reuses |ins-completion-menu|.
--- - Has more complex design which allows multiple sources, each in a form of
--- a separate plugin. This module has two built-in: LSP and fallback.
--- - Requires separate plugin for automated signature help.
--- - Implements own "ghost text" feature, while this module does not.
---
--- - [Saghen/blink.cmp](https://github.com/Saghen/blink.cmp):
--- - Mostly similar to 'nvim-cmp' comparison: provides more features at the
--- cost of more code and config complexity, while this module is designed
--- to provide only a handful of "enough" features while relying on Neovim's
--- built-in capabilities as much as possible.
--- - Both provide automated signature help out of the box.
---
--- # Helpful mappings ~
---
--- If there is |mini.keymap| available, prefer using |MiniKeymap.map_multistep()|
--- with `"pmenu_*"` built-in steps. See |MiniKeymap-examples| for examples.
---
--- To use `<Tab>` and `<S-Tab>` for navigation through completion list, make
--- these mappings: >lua
---
--- local imap_expr = function(lhs, rhs)
--- vim.keymap.set('i', lhs, rhs, { expr = true })
--- end
--- imap_expr('<Tab>', [[pumvisible() ? "\<C-n>" : "\<Tab>"]])
--- imap_expr('<S-Tab>', [[pumvisible() ? "\<C-p>" : "\<S-Tab>"]])
--- <
--- To get more consistent behavior of `<CR>`, you can use this template in
--- your 'init.lua' to make customized mapping: >lua
---
--- _G.cr_action = function()
--- -- If there is selected item in popup, accept it with <C-y>
--- if vim.fn.complete_info()['selected'] ~= -1 then return '\25' end
--- -- Fall back to plain `<CR>`. You might want to customize according
--- -- to other plugins. For example if 'mini.pairs' is set up, replace
--- -- next line with `return MiniPairs.cr()`
--- return '\r'
--- end
---
--- vim.keymap.set('i', '<CR>', 'v:lua.cr_action()', { expr = true })
--- <
--- # Highlight groups ~
---
--- - `MiniCompletionActiveParameter` - signature active parameter.
--- - `MiniCompletionDeprecated` - candidates that marked as deprecated.
--- - `MiniCompletionInfoBorderOutdated` - info window border when text is outdated
--- due to explicit delay during fast movement through candidates.
---
--- To change any highlight group, set it directly with |nvim_set_hl()|.
---
--- # Disabling ~
---
--- To disable, set `vim.g.minicompletion_disable` (globally) or
--- `vim.b.minicompletion_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.
---@tag MiniCompletion
--- To allow user customization, certain |User| autocommand events are
--- triggered under common circumstances:
---
--- - Info and signature help window:
--- - `MiniCompletionWindowOpen` - after opening new window.
--- - `MiniCompletionWindowUpdate` - after updating existing window.
---
--- Each event's |event-data| table contains `kind` (one of "info" or "signature")
--- and `win_id` (affected window identifier) fields.
---@tag MiniCompletion-events
-- Overall implementation design:
-- - Completion:
-- - On `InsertCharPre` event try to start auto completion. If needed,
-- start timer which after delay will start completion process. Stop this
-- timer if it is not needed.
-- - When timer is activated, first execute LSP source (if set up and there
-- is an active LSP client) by calling built-in complete function
-- (`completefunc` or `omnifunc`) which tries LSP completion by
-- asynchronously sending LSP 'textDocument/completion' request to all
-- LSP clients. When all are done, execute callback which processes
-- results, stores them in LSP cache and reruns built-in complete
-- function which produces completion popup.
-- - If previous step didn't result into any completion, execute (in Insert
-- mode and if no popup) fallback action.
-- - Documentation:
-- - On `CompleteChanged` start auto info with similar to completion timer
-- pattern.
-- - If timer is activated, try these sources of item info:
-- - 'info' field of completion item (see `:h complete-items`).
-- - 'documentation' field of LSP's previously returned result.
-- - 'documentation' field in result of asynchronous
-- 'completeItem/resolve' LSP request.
-- - If info doesn't consist only from whitespace, show floating window
-- with its content. Its dimensions and position are computed based on
-- current state of Neovim's data and content itself (which will be
-- displayed wrapped with `linebreak` option).
-- - Signature help (similar to item info):
-- - On `CursorMovedI` start auto signature (if there is any active LSP
-- client) with similar to completion timer pattern. Better event might
-- be `InsertCharPre` but there are issues with 'autopair-type' plugins.
-- Update immediately if already shown or after delay if character to the
-- left is signature help trigger (after delay has passed).
-- - If timer is activated, send 'textDocument/signatureHelp' request to
-- all LSP clients. On callback, process their results. Window is opened
-- if not already with the same text (its characteristics are computed
-- similar to item info). For every LSP client it shows only active
-- signature (in case there are many). If LSP response has data about
-- active parameter, it is highlighted with
-- `MiniCompletionActiveParameter` highlight group.
-- Module definition ==========================================================
local MiniCompletion = {}
local H = {}
--- Module setup
---
---@param config table|nil Module config table. See |MiniCompletion.config|.
---
---@usage >lua
--- require('mini.completion').setup() -- use default config
--- -- OR
--- require('mini.completion').setup({}) -- replace {} with your config table
--- <
MiniCompletion.setup = function(config)
-- Export module
_G.MiniCompletion = MiniCompletion
-- 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
--- Defaults ~
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
MiniCompletion.config = {
-- Delay (debounce type, in ms) between certain Neovim event and action.
-- This can be used to (virtually) disable certain automatic actions by
-- setting very high delay time (like 10^7).
delay = { completion = 100, info = 100, signature = 50 },
-- Configuration for action windows:
-- - `height` and `width` are maximum dimensions.
-- - `border` defines border (as in `nvim_open_win()`; default "single").
window = {
info = { height = 25, width = 80, border = nil },
signature = { height = 25, width = 80, border = nil },
},
-- Way of how module does LSP completion
lsp_completion = {
-- `source_func` should be one of 'completefunc' or 'omnifunc'.
source_func = 'completefunc',
-- `auto_setup` should be boolean indicating if LSP completion is set up
-- on every `BufEnter` event.
auto_setup = true,
-- A function which takes LSP 'textDocument/completion' response items
-- (each with `client_id` field for item's server) and word to complete.
-- Output should be a table of the same nature as input. Common use case
-- is custom filter/sort. Default: `default_process_items`
process_items = nil,
-- A function which takes a snippet as string and inserts it at cursor.
-- Default: `default_snippet_insert` which tries to use 'mini.snippets'
-- and falls back to `vim.snippet.expand` (on Neovim>=0.10).
snippet_insert = nil,
},
-- Fallback action as function/string. Executed in Insert mode.
-- To use built-in completion (`:h ins-completion`), set its mapping as
-- string. Example: set '<C-x><C-l>' for 'whole lines' completion.
fallback_action = '<C-n>',
-- Module mappings. Use `''` (empty string) to disable one. Some of them
-- might conflict with system mappings.
mappings = {
-- Force two-step/fallback completions
force_twostep = '<C-Space>',
force_fallback = '<A-Space>',
-- Scroll info/signature window down/up. When overriding, check for
-- conflicts with built-in keys for popup menu (like `<C-u>`/`<C-o>`
-- for 'completefunc'/'omnifunc' source function; or `<C-n>`/`<C-p>`).
scroll_down = '<C-f>',
scroll_up = '<C-b>',
},
}
--minidoc_afterlines_end
-- Module functionality =======================================================
--- Run two-stage completion
---
---@param fallback boolean|nil Whether to use fallback completion. Default: `true`.
---@param force boolean|nil Whether to force update of completion popup.
--- Default: `true`.
MiniCompletion.complete_twostage = function(fallback, force)
if H.is_disabled() then return end
if fallback == nil then fallback = true end
if force == nil then force = true end
H.stop_completion()
H.completion.fallback, H.completion.force = fallback, force
H.trigger_twostep()
end
--- Run fallback completion
MiniCompletion.complete_fallback = function()
if H.is_disabled() then return end
H.stop_completion()
H.completion.fallback, H.completion.force = true, true
H.trigger_fallback()
end
--- Scroll in info/signature window
---
--- Designed to be used in |:map-<expr>|.
--- Scrolling is done as if |CTRL-F| and |CTRL-B| is pressed inside target window.
--- Used in default `config.mappings.scroll_xxx` mappings.
---
---@param direction string One of `"down"` or `"up"`.
---
---@return boolean Whether scroll is scheduled to be done.
MiniCompletion.scroll = function(direction)
if not (direction == 'down' or direction == 'up') then H.error('`direction` should be one of "up" or "down"') end
local win_id = H.is_valid_win(H.info.win_id) and H.info.win_id
or (H.is_valid_win(H.signature.win_id) and H.signature.win_id or nil)
if win_id == nil then return false end
-- Schedule execution as scrolling is not allowed in expression mappings
local key = direction == 'down' and '\6' or '\2'
vim.schedule(function()
if not H.is_valid_win(win_id) then return end
vim.api.nvim_win_call(win_id, function() vim.cmd('noautocmd normal! ' .. key) end)
end)
return true
end
--- Stop actions
---
--- This stops currently active (because of module delay or LSP answer delay)
--- actions.
---
--- Designed to be used with |autocmd|. No need to use it directly, everything
--- is setup in |MiniCompletion.setup()|.
---
---@param actions table|nil Array containing any of 'completion', 'info', or
--- 'signature' string. Default: array containing all of them.
MiniCompletion.stop = function(actions)
actions = actions or { 'completion', 'info', 'signature' }
for _, n in ipairs(actions) do
H.stop_actions[n]()
end
end
--- Module's |complete-functions|
---
--- This is the main function which enables two-stage completion. It should be
--- set as one of |'completefunc'| or |'omnifunc'|.
---
--- No need to use it directly, everything is setup in |MiniCompletion.setup()|.
MiniCompletion.completefunc_lsp = function(findstart, base)
-- Early return
if not H.has_lsp_clients('completionProvider') or H.completion.lsp.status == 'sent' then
return findstart == 1 and -3 or {}
end
-- NOTE: having code for request inside this function enables its use
-- directly with `<C-x><...>` and as a reaction to `<BS>`.
if H.completion.lsp.status ~= 'received' then
-- NOTE: it is CRUCIAL to make LSP request on the first call to
-- 'complete-function' (as in Vim's help). This is due to the fact that
-- cursor line and position are different on the first and second calls to
-- 'complete-function'. For example, when calling this function at the end
-- of the line ' he', cursor position on the first call will be
-- (<linenum>, 4) and line will be ' he' but on the second call -
-- (<linenum>, 2) and ' ' (because 2 is a column of completion start).
--
-- This request is not executed on second call because it returns `-3` on
-- first call (which means cancel and leave completion mode).
H.make_completion_request()
-- End completion and wait for LSP callback to re-trigger this
return findstart == 1 and -3 or {}
else
if findstart == 1 then
local from, to = H.get_completion_range(H.completion.lsp.result)
-- Cache initial completion state to revert to it when inserting snippet
-- NOTE: Track only length of base for performance, since this is enough
H.completion.init_base = { lnum = from[1], col = from[2], length = math.max(to[2] - from[2], 0) }
return from[2]
end
local is_incomplete = false
local all_items = H.process_lsp_response(H.completion.lsp.result, function(response, client_id)
is_incomplete = is_incomplete or (response.isIncomplete == true)
-- Response can be `CompletionList` with 'items' field plus their
-- defaults or `CompletionItem[]`
local items = H.table_get(response, { 'items' }) or response
if type(items) ~= 'table' then return {} end
items = H.apply_item_defaults(items, response.itemDefaults)
for _, item in ipairs(items) do
item.client_id = client_id
end
return items
end)
-- Process items
local process_items = H.get_config().lsp_completion.process_items or MiniCompletion.default_process_items
all_items = process_items(all_items, base)
local candidates = H.lsp_completion_response_items_to_complete_items(all_items)
H.completion.lsp.status = 'done'
H.completion.lsp.is_incomplete = is_incomplete
-- Maybe trigger fallback action
if vim.tbl_isempty(candidates) and H.completion.fallback then return H.trigger_fallback() end
-- Track from which source is current popup
H.completion.source = 'lsp'
return candidates
end
end
--- Default processing of LSP items
---
--- Steps:
--- - Filter and sort items according to supplied method.
--- - Arrange items further by completion item kind according to their priority.
--- - Add `MiniCompletionDeprecated` <abbr_hlgroup> if item is marked as deprecated.
--- - If |mini.icons| is enabled, add <kind_hlgroup> based on the "lsp" category.
---
--- Example of forcing fuzzy matching, filtering out `Text` items, and putting
--- `Snippet` items last: >lua
---
--- local kind_priority = { Text = -1, Snippet = 99 }
--- local opts = { filtersort = 'fuzzy', kind_priority = kind_priority }
--- local process_items = function(items, base)
--- return MiniCompletion.default_process_items(items, base, opts)
--- end
--- require('mini.completion').setup({
--- lsp_completion = { process_items = process_items },
--- })
--- <
---@param items table Array of items from LSP response.
---@param base string Base for which completion is done. See |complete-functions|.
---@param opts table|nil Options. Possible fields:
--- - <filtersort> `(string|function)` - method of filtering and sorting items.
--- If string, should be one of the following:
--- - `'prefix'` - filter out items not starting with `base`, sort according
--- to LSP specification. Use `filterText` and `sortText` respectively with
--- fallback to `label`.
--- - `'fuzzy'` - filter and sort with |matchfuzzy()| using `filterText`.
--- - `'none'` - no filter and no sort.
--- If callable, should take `items` and `base` arguments and return items array.
--- Default: `'fuzzy'` if 'completeopt' contains "fuzzy", `'prefix'` otherwise.
--- - <kind_priority> `(table)` - map of completion item kinds (like `Variable`,
--- `Snippet`; see string keys of `vim.lsp.protocol.CompletionItemKind`) to
--- their numerical priority. It will be used after applying <filtersort> to
--- arrange by completion item kind: items with negative priority kinds will
--- be filtered out, the rest are sorted by decreasing priority (preserving
--- order in case of same priority).
--- Priorities can be any number, only matters how they compare to each other.
--- Value 100 is used for missing kinds (i.e. not all can be supplied).
--- Default: `{}` (all equal priority).
---
---@return table Array of processed items from LSP response.
MiniCompletion.default_process_items = function(items, base, opts)
opts = opts or {}
-- Filter+sort (important with frequent `isIncomplete`)
local fs = opts.filtersort or (vim.o.completeopt:find('fuzzy') ~= nil and 'fuzzy' or 'prefix')
if type(fs) == 'string' then fs = H.filtersort_methods[fs] end
if not vim.is_callable(fs) then H.error('`filtersort` should be callable or one of "prefix", "fuzzy", "none"') end
local res = fs(items, base)
-- Arrange by kind
if opts.kind_priority ~= nil then res = H.lsp_arrange_by_kind(res, opts.kind_priority) end
-- Add custom highlighting
local add_abbr_hlgroup = H.make_add_abbr_hlgroup()
local add_kind_hlgroup = H.make_add_kind_hlgroup()
for _, item in ipairs(res) do
add_abbr_hlgroup(item)
add_kind_hlgroup(item)
end
return res
end
--- Default snippet insert
---
--- Order of preference:
--- - Use |mini.snippets| if set up (i.e. after `require('mini.snippets').setup()`).
--- - Use |vim.snippet.expand()| on Neovim>=0.10
--- - Add snippet text at cursor as is.
---
--- After snippet is inserted, user is expected to navigate/jump between dedicated
--- places (tabstops) to adjust inserted text as needed:
--- - |mini.snippets| by default uses <C-l> / <C-h> to jump to next/previous tabstop.
--- Can be adjusted in `mappings` of |MiniSnippets.config|.
--- - |vim.snippet| on Neovim=0.10 requires manually created mappings for jumping
--- between tabstops (see |vim.snippet.jump()|). Neovim>=0.11 sets them up
--- automatically to <Tab> / <S-Tab> (if not overridden by user).
---
--- End session by navigating all the way to the last tabstop. In 'mini.snippets':
--- - Also make any text edit or exit Insert mode to end the session. This allows
--- smoother navigation to previous tabstops in case of a lately spotted typo.
--- - Press `<C-c>` to force session stop.
---
---@param snippet string Snippet body to insert at cursor.
---
---@seealso - |MiniSnippets-session| if 'mini.snippets' is set up.
--- - |vim.snippet| for Neovim's built-in snippet engine.
MiniCompletion.default_snippet_insert = function(snippet)
if _G.MiniSnippets then
local insert = MiniSnippets.config.expand.insert or MiniSnippets.default_insert
return insert({ body = snippet })
end
if vim.fn.has('nvim-0.10') == 1 then return vim.snippet.expand(snippet) end
local pos, lines = vim.api.nvim_win_get_cursor(0), vim.split(snippet, '\n')
vim.api.nvim_buf_set_text(0, pos[1] - 1, pos[2], pos[1] - 1, pos[2], lines)
local n = #lines
local new_pos = n == 1 and { pos[1], pos[2] + lines[n]:len() } or { pos[1] + n - 1, lines[n]:len() }
vim.api.nvim_win_set_cursor(0, new_pos)
end
--- Get client LSP capabilities
---
--- Possible usages:
--- - On Neovim>=0.11 via |vim.lsp.config()|: >lua
---
--- vim.lsp.config('*', {capabilities = MiniCompletion.get_lsp_capabilities()})
--- <
--- - Together with |vim.lsp.protocol.make_client_capabilities()| to get the full
--- client capabilities (use |vim.tbl_deep_extend()| to merge tables).
---
--- - Manually execute `:=MiniCompletion.get_lsp_capabilities()` to see the info.
---
--- Notes:
--- - It declares completion resolve support for `'additionalTextEdits'` (usually
--- used for something like auto-import feature), as it is usually a more robust
--- choice for various LSP servers. As a consequence, this requires selecting
--- completion item and waiting for `config.delay.info` milliseconds plus server
--- response time (i.e. until information window shows relevant text).
--- To not have to wait after an item selection and if the server handles absent
--- `'additionalTextEdits'` well, set `opts.resolve_additional_text_edits = false`.
---
---@param opts table|nil Options. Possible fields:
--- - <resolve_additional_text_edits> `(boolean)` - whether to declare
--- `'additionalTextEdits'` as possible to resolve in `'completionitem/resolve'`
--- requrest. See above "Notes" section.
--- Default: `true`.
---
---@return table Data about LSP capabilities supported by 'mini.completion'. Has same
--- structure as relevant parts of |vim.lsp.protocol.make_client_capabilities()|.
---
---@seealso Structures of `completionClientCapabilities` and `signatureHelpClientCapabilities`
--- at https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification
MiniCompletion.get_lsp_capabilities = function(opts)
opts = vim.tbl_extend('force', { resolve_additional_text_edits = true }, opts or {})
local resolve_support = { 'detail', 'documentation' }
if opts.resolve_additional_text_edits then table.insert(resolve_support, 1, 'additionalTextEdits') end
local tag_valueset = vim.fn.has('nvim-0.11') == 1 and { vim.lsp.protocol.CompletionTag.Deprecated } or {}
return {
textDocument = {
-- https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#completionClientCapabilities
completion = {
dynamicRegistration = false,
completionItem = {
snippetSupport = true,
commitCharactersSupport = false,
documentationFormat = { 'markdown', 'plaintext' },
deprecatedSupport = true,
preselectSupport = false,
tagSupport = { valueSet = tag_valueset },
insertReplaceSupport = true,
resolveSupport = { properties = resolve_support },
insertTextModeSupport = { valueSet = { 1 } },
labelDetailsSupport = true,
},
completionItemKind = {
valueSet = { 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 },
},
contextSupport = true,
insertTextMode = 1,
completionList = {
itemDefaults = { 'commitCharacters', 'editRange', 'insertTextFormat', 'insertTextMode', 'data' },
},
},
-- https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#signatureHelpClientCapabilities
signatureHelp = {
dynamicRegistration = false,
signatureInformation = {
documentationFormat = { 'markdown', 'plaintext' },
parameterInformation = {
labelOffsetSupport = true,
},
activeParameterSupport = true,
},
contextSupport = false,
},
},
}
end
-- Helper data ================================================================
-- Module default config
H.default_config = vim.deepcopy(MiniCompletion.config)
-- Track Insert mode changes
H.text_changed_id = 0
-- Namespace for highlighting
H.ns_id = vim.api.nvim_create_namespace('MiniCompletion')
-- Commonly used key sequences
H.keys = {
completefunc = vim.api.nvim_replace_termcodes('<C-x><C-u>', true, false, true),
omnifunc = vim.api.nvim_replace_termcodes('<C-x><C-o>', true, false, true),
ctrl_n = vim.api.nvim_replace_termcodes('<C-g><C-g><C-n>', true, false, true),
}
-- Flags for whether there is support for dedicated options
H.has_no_winborder = vim.fn.has('nvim-0.11') == 0
H.has_pumborder = vim.fn.exists('+pumborder') == 1 -- Neovim>=0.12
-- Caches for different actions -----------------------------------------------
-- Field `lsp` is a table describing state of all used LSP requests. It has the
-- following structure:
-- - id: identifier (consecutive numbers).
-- - status: one of 'sent', 'received', 'done', 'canceled'
-- - is_incomplete: whether request was incomplete and require recomputing
-- - result: result of request.
-- - cancel_fun: function which cancels current request.
-- Cache for completion
H.completion = {
fallback = true,
force = false,
source = nil,
text_changed_id = 0,
timer = vim.loop.new_timer(),
lsp = { id = 0, status = nil, is_incomplete = false, result = nil, resolved = {}, cancel_fun = nil, context = nil },
init_base = { lnum = nil, col = nil, length = nil },
}
-- Cache for completion item info
H.info = {
bufnr = nil,
event = nil,
id = 0,
timer = vim.loop.new_timer(),
win_id = nil,
lsp = { id = 0, status = nil, result = nil, cancel_fun = nil },
}
-- Cache for signature help
H.signature = {
bufnr = nil,
text = nil,
timer = vim.loop.new_timer(),
win_id = nil,
lsp = { id = 0, status = nil, result = nil, cancel_fun = nil },
}
-- 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('delay', config.delay, 'table')
H.check_type('window', config.window, 'table')
H.check_type('lsp_completion', config.lsp_completion, 'table')
if not (type(config.fallback_action) == 'function' or type(conf
10BC8
ig.fallback_action) == 'string') then
H.error('`fallback_action` should be function or string, not ' .. type(config.fallback_action))
end
H.check_type('mappings', config.mappings, 'table')
H.check_type('delay.completion', config.delay.completion, 'number')
H.check_type('delay.info', config.delay.info, 'number')
H.check_type('delay.signature', config.delay.signature, 'number')
H.check_type('window.info', config.window.info, 'table')
H.check_type('window.signature', config.window.signature, 'table')
if not (config.lsp_completion.source_func == 'completefunc' or config.lsp_completion.source_func == 'omnifunc') then
H.error('`lsp_completion.source_func` should be one of "completefunc" or "omnifunc"')
end
H.check_type('lsp_completion.auto_setup', config.lsp_completion.auto_setup, 'boolean')
H.check_type('lsp_completion.process_items', config.lsp_completion.process_items, 'callable', true)
H.check_type('lsp_completion.snippet_insert', config.lsp_completion.snippet_insert, 'callable', true)
H.check_type('mappings.force_twostep', config.mappings.force_twostep, 'string')
H.check_type('mappings.force_fallback', config.mappings.force_fallback, 'string')
H.check_type('mappings.scroll_down', config.mappings.scroll_down, 'string')
H.check_type('mappings.scroll_up', config.mappings.scroll_up, 'string')
local is_string_or_array = function(x) return type(x) == 'string' or H.islist(x) end
H.check_type('window.info.height', config.window.info.height, 'number')
H.check_type('window.info.width', config.window.info.width, 'number')
if not is_string_or_array(config.window.info.border or 'single') then
H.error('`config.window.info.border` should be either string or array, not ' .. type(config.window.info.border))
end
H.check_type('window.signature.height', config.window.signature.height, 'number')
H.check_type('window.signature.width', config.window.signature.width, 'number')
if not is_string_or_array(config.window.signature.border or 'single') then
H.error(
'`config.window.signature.border` should be either string or array, not ' .. type(config.window.signature.border)
)
end
return config
end
H.apply_config = function(config)
MiniCompletion.config = config
H.map('i', config.mappings.force_twostep, MiniCompletion.complete_twostage, { desc = 'Complete with two-stage' })
H.map('i', config.mappings.force_fallback, MiniCompletion.complete_fallback, { desc = 'Complete with fallback' })
local map_scroll = function(lhs, direction)
local rhs = function() return MiniCompletion.scroll(direction) and '' or lhs end
H.map('i', lhs, rhs, { expr = true, desc = 'Scroll info/signature ' .. direction })
end
map_scroll(config.mappings.scroll_down, 'down')
map_scroll(config.mappings.scroll_up, 'up')
-- Try setting suggested option values
-- - More common completion behavior
local was_set = vim.api.nvim_get_option_info2('completeopt', { scope = 'global' }).was_set
if not was_set then vim.o.completeopt = 'menuone,noselect' end
-- - Don't show ins-completion-menu messages ("C" is default on Neovim>=0.10)
local shortmess_flags = 'c' .. (vim.fn.has('nvim-0.10') == 0 and 'C' or '')
was_set = vim.api.nvim_get_option_info2('shortmess', { scope = 'global' }).was_set
if not was_set then vim.opt.shortmess:append(shortmess_flags) end
-- - Remove "t" flag to reduce visible lags
was_set = vim.api.nvim_get_option_info2('complete', { scope = 'global' }).was_set
if not was_set and config.fallback_action == '<C-n>' then vim.opt.complete:remove('t') end
end
H.create_autocommands = function(config)
local gr = vim.api.nvim_create_augroup('MiniCompletion', {})
local au = function(event, pattern, callback, desc)
vim.api.nvim_create_autocmd(event, { group = gr, pattern = pattern, callback = callback, desc = desc })
end
au('InsertCharPre', '*', H.auto_completion, 'Auto show completion')
au('CompleteChanged', '*', H.auto_info, 'Auto show info')
au('CursorMovedI', '*', H.auto_signature, 'Auto show signature')
au('ModeChanged', 'i*:[^i]*', function() MiniCompletion.stop() end, 'Stop completion')
au('CompleteDonePre', '*', H.on_completedonepre, 'On CompleteDonePre')
au('TextChangedI', '*', H.on_text_changed_i, 'On TextChangedI')
au('TextChangedP', '*', H.on_text_changed_p, 'On TextChangedP')
if config.lsp_completion.auto_setup then
local source_func = config.lsp_completion.source_func
local callback = function() vim.bo[source_func] = 'v:lua.MiniCompletion.completefunc_lsp' end
au('BufEnter', '*', callback, 'Set completion function')
end
au('ColorScheme', '*', H.create_default_hl, 'Ensure colors')
au('FileType', 'TelescopePrompt', function() vim.b.minicompletion_disable = true end, 'Disable locally')
end
H.create_default_hl = function()
vim.api.nvim_set_hl(0, 'MiniCompletionActiveParameter', { default = true, link = 'LspSignatureActiveParameter' })
vim.api.nvim_set_hl(0, 'MiniCompletionDeprecated', { default = true, link = 'DiagnosticDeprecated' })
vim.api.nvim_set_hl(0, 'MiniCompletionInfoBorderOutdated', { default = true, link = 'DiagnosticFloatingWarn' })
end
H.is_disabled = function() return vim.g.minicompletion_disable == true or vim.b.minicompletion_disable == true end
H.get_config = function(config)
return vim.tbl_deep_extend('force', MiniCompletion.config, vim.b.minicompletion_config or {}, config or {})
end
-- Autocommands ---------------------------------------------------------------
H.auto_completion = function()
if H.is_disabled() then return end
H.completion.timer:stop()
local is_incomplete = H.completion.lsp.is_incomplete
local is_trigger = H.is_lsp_trigger(vim.v.char, 'completion')
local force = is_trigger or is_incomplete
if force then
-- Force fresh LSP completion if needed. Check before checking pumvisible
-- because it should be forced even if there are visible candidates.
-- Keep positive `is_incomplete` to allow fast typing and not "forget" that
-- list was incomplete after the second fast key press. This will force LSP
-- completion until `isIncomplete=false` response or general `stop()`.
H.stop_completion(false, is_incomplete)
elseif H.pumvisible() then
-- Do nothing if popup is visible. `H.pumvisible()` might be `true` even if
-- there is no popup. It is common when manually typing candidate followed
-- by an LSP trigger (like ".").
-- Keep completion source as it is needed all time when popup is visible.
-- Keep resolved candidates because they should be relevant in this route.
return H.stop_completion(true, false, true)
elseif not H.is_char_keyword(vim.v.char) then
-- Stop everything if inserted character is not appropriate. Check this
-- after popup check to allow completion candidates to have bad characters.
return H.stop_completion(false)
end
-- Start non-forced completion with fallback or forced LSP source for trigger
H.completion.fallback, H.completion.force = not force, force
-- Cache id of Insert mode "text changed" event for a later tracking (reduces
-- false positive delayed triggers). The intention is to trigger completion
-- after the delay only if text wasn't changed during waiting. Using only
-- `InsertCharPre` is not enough though, as not every Insert mode change
-- triggers `InsertCharPre` event (notable example - hitting `<CR>`).
-- Also, using `+ 1` here because it is a `Pre` event and needs to cache
-- after inserting character.
H.completion.text_changed_id = H.text_changed_id + 1
-- If completion was requested after 'lsp' source exhausted itself (there
-- were matches on typing start, but they disappeared during filtering), call
-- fallback immediately.
if H.completion.source == 'lsp' then return H.trigger_fallback() end
-- Set completion context with information about how it was triggered
-- Prefer manual `TriggerCharacter` over automated `...ForIncomplete...`.
local trigger_kind_name = is_trigger and 'TriggerCharacter'
or (is_incomplete and 'TriggerForIncompleteCompletions' or 'Invoked')
local trigger_kind = vim.lsp.protocol.CompletionTriggerKind[trigger_kind_name]
local trigger_char = trigger_kind_name == 'TriggerCharacter' and vim.v.char or nil
H.completion.lsp.context = { triggerKind = trigger_kind, triggerCharacter = trigger_char }
-- Debounce delay improves experience (can type fast without many popups)
-- Request right away if improving incomplete suggestions (less flickering),
-- but still with `vim.schedule` because line is still not up to date during
-- `InsertCharPre` event.
local delay = is_incomplete and 0 or H.get_config().delay.completion
H.completion.timer:start(delay, 0, vim.schedule_wrap(H.trigger_twostep))
end
H.auto_info = function()
if H.is_disabled() then return end
-- Stop current LSP request that tries to get already not current data
H.cancel_lsp({ H.info })
-- Update metadata before leaving to register a `CompleteChanged` event
H.info.timer:stop()
H.info.event = vim.v.event
H.info.id = H.info.id + 1
-- Stop showing window if no candidate is selected
local completed_item = H.info.event.completed_item or {}
if completed_item.word == nil then
return vim.schedule(function() H.close_action_window(H.info) end)
end
-- Show info content without delay for visited and resolved LSP item.
-- Otherwise delay to not spam LSP requests on up/down navigation.
local item_id = H.table_get(completed_item, { 'user_data', 'lsp', 'item_id' })
local is_resolved = item_id == nil or H.completion.lsp.resolved[item_id] ~= nil
local delay = is_resolved and 0 or H.get_config().delay.info
-- Mark visually that currently shown content will be outdated for a while
local win_id = H.info.win_id
if H.is_valid_win(win_id) and delay > 0 then
vim.wo[win_id].winhighlight = vim.wo[win_id].winhighlight .. ',FloatBorder:MiniCompletionInfoBorderOutdated'
end
local cur_info_id = H.info.id
H.info.timer:start(delay, 0, function() H.show_info_window(cur_info_id) end)
end
H.auto_signature = function()
if H.is_disabled() then return end
H.signature.timer:stop()
if not H.has_lsp_clients('signatureHelpProvider') then return end
local is_shown = H.is_valid_win(H.signature.win_id)
local left_char_is_trigger = H.is_lsp_trigger(H.get_left_char(), 'signature')
if not (is_shown or left_char_is_trigger) then return end
local delay = is_shown and 0 or H.get_config().delay.signature
H.signature.timer:start(delay, 0, vim.schedule_wrap(H.show_signature_window))
end
H.on_completedonepre = function()
-- Do nothing if it is triggered inside `trigger_lsp()` as a result of
-- emulating 'completefunc'/'omnifunc' keys. This can happen if popup is
-- visible and pressing keys first hides it with 'CompleteDonePre' event.
if H.completion.lsp.status == 'received' then return end
-- Do extra actions for LSP completion items
local lsp_data = H.table_get(vim.v.completed_item, { 'user_data', 'lsp' })
if lsp_data ~= nil then H.make_lsp_extra_actions(lsp_data) end
-- Stop processes
MiniCompletion.stop({ 'completion', 'info' })
end
H.on_text_changed_i = function()
-- Track Insert mode changes
H.text_changed_id = H.text_changed_id + 1
-- Stop 'info' processes in case no completion event is triggered but popup
-- is not visible. See https://github.com/neovim/neovim/issues/15077
H.stop_info()
end
H.on_text_changed_p = function()
-- Track Insert mode changes
H.text_changed_id = H.text_changed_id + 1
end
-- Completion triggers --------------------------------------------------------
H.trigger_twostep = function()
-- Trigger only in Insert mode and if text didn't change after trigger
-- request, unless completion is forced
-- NOTE: check for `text_changed_id` equality is still not 100% solution as
-- there are cases when, for example, `<CR>` is hit just before this check.
-- Because of asynchronous id update and this function call (called after
-- delay), these still match.
local allow_trigger = (vim.fn.mode() == 'i')
and (H.completion.force or (H.completion.text_changed_id == H.text_changed_id))
if not allow_trigger then return end
if H.has_lsp_clients('completionProvider') and H.has_lsp_completion() then
H.trigger_lsp()
elseif H.completion.fallback then