File: settings.go

package info (click to toggle)
golang-github-cue-lang-cue 0.12.0.-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 19,072 kB
  • sloc: sh: 57; makefile: 17
file content (1324 lines) | stat: -rw-r--r-- 40,935 bytes parent folder | download
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package settings

import (
	"context"
	"fmt"
	"path/filepath"
	"regexp"
	"runtime"
	"strings"
	"time"

	"cuelang.org/go/internal/golangorgx/gopls/file"
	"cuelang.org/go/internal/golangorgx/gopls/protocol"
	"golang.org/x/tools/go/analysis"
)

type Annotation string

const (
	// Nil controls nil checks.
	Nil Annotation = "nil"

	// Escape controls diagnostics about escape choices.
	Escape Annotation = "escape"

	// Inline controls diagnostics about inlining choices.
	Inline Annotation = "inline"

	// Bounds controls bounds checking diagnostics.
	Bounds Annotation = "bounds"
)

// Options holds various configuration that affects Gopls execution, organized
// by the nature or origin of the settings.
type Options struct {
	ClientOptions
	ServerOptions
	UserOptions
	InternalOptions
	Hooks
}

// IsAnalyzerEnabled reports whether an analyzer with the given name is
// enabled.
//
// TODO(rfindley): refactor to simplify this function. We no longer need the
// different categories of analyzer.
func (opts *Options) IsAnalyzerEnabled(name string) bool {
	for _, amap := range []map[string]*Analyzer{opts.DefaultAnalyzers, opts.StaticcheckAnalyzers} {
		for _, analyzer := range amap {
			if analyzer.Analyzer.Name == name && analyzer.IsEnabled(opts) {
				return true
			}
		}
	}
	return false
}

// ClientOptions holds LSP-specific configuration that is provided by the
// client.
type ClientOptions struct {
	ClientInfo                                 *protocol.ClientInfo
	InsertTextFormat                           protocol.InsertTextFormat
	ConfigurationSupported                     bool
	DynamicConfigurationSupported              bool
	DynamicRegistrationSemanticTokensSupported bool
	DynamicWatchedFilesSupported               bool
	RelativePatternsSupported                  bool
	PreferredContentFormat                     protocol.MarkupKind
	LineFoldingOnly                            bool
	HierarchicalDocumentSymbolSupport          bool
	SemanticTypes                              []string
	SemanticMods                               []string
	RelatedInformationSupported                bool
	CompletionTags                             bool
	CompletionDeprecated                       bool
	SupportedResourceOperations                []protocol.ResourceOperationKind
	CodeActionResolveOptions                   []string
}

// ServerOptions holds LSP-specific configuration that is provided by the
// server.
type ServerOptions struct {
	SupportedCodeActions map[file.Kind]map[protocol.CodeActionKind]bool
	SupportedCommands    []string
}

type BuildOptions struct {
	// BuildFlags is the set of flags passed on to the build system when invoked.
	// It is applied to queries like `go list`, which is used when discovering files.
	// The most common use is to set `-tags`.
	BuildFlags []string

	// Env adds environment variables to external commands run by `gopls`, most notably `go list`.
	Env map[string]string

	// DirectoryFilters can be used to exclude unwanted directories from the
	// workspace. By default, all directories are included. Filters are an
	// operator, `+` to include and `-` to exclude, followed by a path prefix
	// relative to the workspace folder. They are evaluated in order, and
	// the last filter that applies to a path controls whether it is included.
	// The path prefix can be empty, so an initial `-` excludes everything.
	//
	// DirectoryFilters also supports the `**` operator to match 0 or more directories.
	//
	// Examples:
	//
	// Exclude node_modules at current depth: `-node_modules`
	//
	// Exclude node_modules at any depth: `-**/node_modules`
	//
	// Include only project_a: `-` (exclude everything), `+project_a`
	//
	// Include only project_a, but not node_modules inside it: `-`, `+project_a`, `-project_a/node_modules`
	DirectoryFilters []string

	// TemplateExtensions gives the extensions of file names that are treateed
	// as template files. (The extension
	// is the part of the file name after the final dot.)
	TemplateExtensions []string

	// obsolete, no effect
	MemoryMode string `status:"experimental"`

	// ExpandWorkspaceToModule determines which packages are considered
	// "workspace packages" when the workspace is using modules.
	//
	// Workspace packages affect the scope of workspace-wide operations. Notably,
	// gopls diagnoses all packages considered to be part of the workspace after
	// every keystroke, so by setting "ExpandWorkspaceToModule" to false, and
	// opening a nested workspace directory, you can reduce the amount of work
	// gopls has to do to keep your workspace up to date.
	ExpandWorkspaceToModule bool `status:"experimental"`

	// AllowModfileModifications disables -mod=readonly, allowing imports from
	// out-of-scope modules. This option will eventually be removed.
	AllowModfileModifications bool `status:"experimental"`

	// AllowImplicitNetworkAccess disables GOPROXY=off, allowing implicit module
	// downloads rather than requiring user action. This option will eventually
	// be removed.
	AllowImplicitNetworkAccess bool `status:"experimental"`

	// StandaloneTags specifies a set of build constraints that identify
	// individual Go source files that make up the entire main package of an
	// executable.
	//
	// A common example of standalone main files is the convention of using the
	// directive `//go:build ignore` to denote files that are not intended to be
	// included in any package, for example because they are invoked directly by
	// the developer using `go run`.
	//
	// Gopls considers a file to be a standalone main file if and only if it has
	// package name "main" and has a build directive of the exact form
	// "//go:build tag" or "// +build tag", where tag is among the list of tags
	// configured by this setting. Notably, if the build constraint is more
	// complicated than a simple tag (such as the composite constraint
	// `//go:build tag && go1.18`), the file is not considered to be a standalone
	// main file.
	//
	// This setting is only supported when gopls is built with Go 1.16 or later.
	StandaloneTags []string
}

type UIOptions struct {
	DocumentationOptions
	CompletionOptions
	NavigationOptions
	DiagnosticOptions
	InlayHintOptions

	// Codelenses overrides the enabled/disabled state of code lenses. See the
	// "Code Lenses" section of the
	// [Settings page](https://github.com/golang/tools/blob/master/gopls/doc/settings.md#code-lenses)
	// for the list of supported lenses.
	//
	// Example Usage:
	//
	// ```json5
	// "gopls": {
	// ...
	//   "codelenses": {
	//     "generate": false,  // Don't show the `go generate` lens.
	//     "gc_details": true  // Show a code lens toggling the display of gc's choices.
	//   }
	// ...
	// }
	// ```
	Codelenses map[string]bool

	// SemanticTokens controls whether the LSP server will send
	// semantic tokens to the client.
	SemanticTokens bool `status:"experimental"`

	// NoSemanticString turns off the sending of the semantic token 'string'
	NoSemanticString bool `status:"experimental"`

	// NoSemanticNumber  turns off the sending of the semantic token 'number'
	NoSemanticNumber bool `status:"experimental"`
}

type CompletionOptions struct {
	// Placeholders enables placeholders for function parameters or struct
	// fields in completion responses.
	UsePlaceholders bool

	// CompletionBudget is the soft latency goal for completion requests. Most
	// requests finish in a couple milliseconds, but in some cases deep
	// completions can take much longer. As we use up our budget we
	// dynamically reduce the search scope to ensure we return timely
	// results. Zero means unlimited.
	CompletionBudget time.Duration `status:"debug"`

	// Matcher sets the algorithm that is used when calculating completion
	// candidates.
	Matcher Matcher `status:"advanced"`

	// ExperimentalPostfixCompletions enables artificial method snippets
	// such as "someSlice.sort!".
	ExperimentalPostfixCompletions bool `status:"experimental"`

	// CompleteFunctionCalls enables function call completion.
	//
	// When completing a statement, or when a function return type matches the
	// expected of the expression being completed, completion may suggest call
	// expressions (i.e. may include parentheses).
	CompleteFunctionCalls bool
}

type DocumentationOptions struct {
	// HoverKind controls the information that appears in the hover text.
	// SingleLine and Structured are intended for use only by authors of editor plugins.
	HoverKind HoverKind

	// LinkTarget controls where documentation links go.
	// It might be one of:
	//
	// * `"godoc.org"`
	// * `"pkg.go.dev"`
	//
	// If company chooses to use its own `godoc.org`, its address can be used as well.
	//
	// Modules matching the GOPRIVATE environment variable will not have
	// documentation links in hover.
	LinkTarget string

	// LinksInHover toggles the presence of links to documentation in hover.
	LinksInHover bool
}

type FormattingOptions struct {
	// Local is the equivalent of the `goimports -local` flag, which puts
	// imports beginning with this string after third-party packages. It should
	// be the prefix of the import path whose imports should be grouped
	// separately.
	Local string

	// Gofumpt indicates if we should run gofumpt formatting.
	Gofumpt bool
}

type DiagnosticOptions struct {
	// Analyses specify analyses that the user would like to enable or disable.
	// A map of the names of analysis passes that should be enabled/disabled.
	// A full list of analyzers that gopls uses can be found in
	// [analyzers.md](https://github.com/golang/tools/blob/master/gopls/doc/analyzers.md).
	//
	// Example Usage:
	//
	// ```json5
	// ...
	// "analyses": {
	//   "unreachable": false, // Disable the unreachable analyzer.
	//   "unusedvariable": true  // Enable the unusedvariable analyzer.
	// }
	// ...
	// ```
	Analyses map[string]bool

	// Staticcheck enables additional analyses from staticcheck.io.
	// These analyses are documented on
	// [Staticcheck's website](https://staticcheck.io/docs/checks/).
	Staticcheck bool `status:"experimental"`

	// Annotations specifies the various kinds of optimization diagnostics
	// that should be reported by the gc_details command.
	Annotations map[Annotation]bool `status:"experimental"`

	// DiagnosticsDelay controls the amount of time that gopls waits
	// after the most recent file modification before computing deep diagnostics.
	// Simple diagnostics (parsing and type-checking) are always run immediately
	// on recently modified packages.
	//
	// This option must be set to a valid duration string, for example `"250ms"`.
	DiagnosticsDelay time.Duration `status:"advanced"`

	// DiagnosticsTrigger controls when to run diagnostics.
	DiagnosticsTrigger DiagnosticsTrigger `status:"experimental"`

	// AnalysisProgressReporting controls whether gopls sends progress
	// notifications when construction of its index of analysis facts is taking a
	// long time. Cancelling these notifications will cancel the indexing task,
	// though it will restart after the next change in the workspace.
	//
	// When a package is opened for the first time and heavyweight analyses such as
	// staticcheck are enabled, it can take a while to construct the index of
	// analysis facts for all its dependencies. The index is cached in the
	// filesystem, so subsequent analysis should be faster.
	AnalysisProgressReporting bool
}

type InlayHintOptions struct {
	// Hints specify inlay hints that users want to see. A full list of hints
	// that gopls uses can be found in
	// [inlayHints.md](https://github.com/golang/tools/blob/master/gopls/doc/inlayHints.md).
	Hints map[string]bool `status:"experimental"`
}

type NavigationOptions struct {
	// ImportShortcut specifies whether import statements should link to
	// documentation or go to definitions.
	ImportShortcut ImportShortcut

	// SymbolMatcher sets the algorithm that is used when finding workspace symbols.
	SymbolMatcher SymbolMatcher `status:"advanced"`

	// SymbolStyle controls how symbols are qualified in symbol responses.
	//
	// Example Usage:
	//
	// ```json5
	// "gopls": {
	// ...
	//   "symbolStyle": "Dynamic",
	// ...
	// }
	// ```
	SymbolStyle SymbolStyle `status:"advanced"`

	// SymbolScope controls which packages are searched for workspace/symbol
	// requests. The default value, "workspace", searches only workspace
	// packages. The legacy behavior, "all", causes all loaded packages to be
	// searched, including dependencies; this is more expensive and may return
	// unwanted results.
	SymbolScope SymbolScope
}

// UserOptions holds custom Gopls configuration (not part of the LSP) that is
// modified by the client.
type UserOptions struct {
	BuildOptions
	UIOptions
	FormattingOptions

	// VerboseOutput enables additional debug logging.
	VerboseOutput bool `status:"debug"`
}

// EnvSlice returns Env as a slice of k=v strings.
func (u *UserOptions) EnvSlice() []string {
	var result []string
	for k, v := range u.Env {
		result = append(result, fmt.Sprintf("%v=%v", k, v))
	}
	return result
}

// SetEnvSlice sets Env from a slice of k=v strings.
func (u *UserOptions) SetEnvSlice(env []string) {
	u.Env = map[string]string{}
	for _, kv := range env {
		split := strings.SplitN(kv, "=", 2)
		if len(split) != 2 {
			continue
		}
		u.Env[split[0]] = split[1]
	}
}

// Hooks contains configuration that is provided to the Gopls command by the
// main package.
type Hooks struct {
	// LicensesText holds third party licenses for software used by gopls.
	LicensesText string

	// Whether staticcheck is supported.
	StaticcheckSupported bool

	// URLRegexp is used to find potential URLs in comments/strings.
	//
	// Not all matches are shown to the user: if the matched URL is not detected
	// as valid, it will be skipped.
	URLRegexp *regexp.Regexp

	// GofumptFormat allows the gopls module to wire-in a call to
	// gofumpt/format.Source. langVersion and modulePath are used for some
	// Gofumpt formatting rules -- see the Gofumpt documentation for details.
	GofumptFormat func(ctx context.Context, langVersion, modulePath string, src []byte) ([]byte, error)

	DefaultAnalyzers     map[string]*Analyzer
	StaticcheckAnalyzers map[string]*Analyzer
}

// InternalOptions contains settings that are not intended for use by the
// average user. These may be settings used by tests or outdated settings that
// will soon be deprecated. Some of these settings may not even be configurable
// by the user.
//
// TODO(rfindley): even though these settings are not intended for
// modification, some of them should be surfaced in our documentation.
type InternalOptions struct {
	// VerboseWorkDoneProgress controls whether the LSP server should send
	// progress reports for all work done outside the scope of an RPC.
	// Used by the regression tests.
	VerboseWorkDoneProgress bool

	// The following options were previously available to users, but they
	// really shouldn't be configured by anyone other than "power users".

	// CompletionDocumentation enables documentation with completion results.
	CompletionDocumentation bool

	// CompleteUnimported enables completion for packages that you do not
	// currently import.
	CompleteUnimported bool

	// DeepCompletion enables the ability to return completions from deep
	// inside relevant entities, rather than just the locally accessible ones.
	//
	// Consider this example:
	//
	// ```go
	// package main
	//
	// import "fmt"
	//
	// type wrapString struct {
	//     str string
	// }
	//
	// func main() {
	//     x := wrapString{"hello world"}
	//     fmt.Printf(<>)
	// }
	// ```
	//
	// At the location of the `<>` in this program, deep completion would suggest
	// the result `x.str`.
	DeepCompletion bool

	// ShowBugReports causes a message to be shown when the first bug is reported
	// on the server.
	// This option applies only during initialization.
	ShowBugReports bool

	// SubdirWatchPatterns configures the file watching glob patterns registered
	// by gopls.
	//
	// Some clients (namely VS Code) do not send workspace/didChangeWatchedFile
	// notifications for files contained in a directory when that directory is
	// deleted:
	// https://github.com/microsoft/vscode/issues/109754
	//
	// In this case, gopls would miss important notifications about deleted
	// packages. To work around this, gopls registers a watch pattern for each
	// directory containing Go files.
	//
	// Unfortunately, other clients experience performance problems with this
	// many watch patterns, so there is no single behavior that works well for
	// all clients.
	//
	// The "subdirWatchPatterns" setting allows configuring this behavior. Its
	// default value of "auto" attempts to guess the correct behavior based on
	// the client name. We'd love to avoid this specialization, but as described
	// above there is no single value that works for all clients.
	//
	// If any LSP client does not behave well with the default value (for
	// example, if like VS Code it drops file notifications), please file an
	// issue.
	SubdirWatchPatterns SubdirWatchPatterns

	// ReportAnalysisProgressAfter sets the duration for gopls to wait before starting
	// progress reporting for ongoing go/analysis passes.
	//
	// It is intended to be used for testing only.
	ReportAnalysisProgressAfter time.Duration

	// TelemetryPrompt controls whether gopls prompts about enabling Go telemetry.
	//
	// Once the prompt is answered, gopls doesn't ask again, but TelemetryPrompt
	// can prevent the question from ever being asked in the first place.
	TelemetryPrompt bool

	// LinkifyShowMessage controls whether the client wants gopls
	// to linkify links in showMessage. e.g. [go.dev](https://go.dev).
	LinkifyShowMessage bool

	// IncludeReplaceInWorkspace controls whether locally replaced modules in a
	// go.mod file are treated like workspace modules.
	// Or in other words, if a go.mod file with local replaces behaves like a
	// go.work file.
	IncludeReplaceInWorkspace bool

	// ZeroConfig enables the zero-config algorithm for workspace layout,
	// dynamically creating build configurations for different modules,
	// directories, and GOOS/GOARCH combinations to cover open files.
	ZeroConfig bool
}

type SubdirWatchPatterns string

const (
	SubdirWatchPatternsOn   SubdirWatchPatterns = "on"
	SubdirWatchPatternsOff  SubdirWatchPatterns = "off"
	SubdirWatchPatternsAuto SubdirWatchPatterns = "auto"
)

type ImportShortcut string

const (
	BothShortcuts      ImportShortcut = "Both"
	LinkShortcut       ImportShortcut = "Link"
	DefinitionShortcut ImportShortcut = "Definition"
)

func (s ImportShortcut) ShowLinks() bool {
	return s == BothShortcuts || s == LinkShortcut
}

func (s ImportShortcut) ShowDefinition() bool {
	return s == BothShortcuts || s == DefinitionShortcut
}

type Matcher string

const (
	Fuzzy           Matcher = "Fuzzy"
	CaseInsensitive Matcher = "CaseInsensitive"
	CaseSensitive   Matcher = "CaseSensitive"
)

// A SymbolMatcher controls the matching of symbols for workspace/symbol
// requests.
type SymbolMatcher string

const (
	SymbolFuzzy           SymbolMatcher = "Fuzzy"
	SymbolFastFuzzy       SymbolMatcher = "FastFuzzy"
	SymbolCaseInsensitive SymbolMatcher = "CaseInsensitive"
	SymbolCaseSensitive   SymbolMatcher = "CaseSensitive"
)

// A SymbolStyle controls the formatting of symbols in workspace/symbol results.
type SymbolStyle string

const (
	// PackageQualifiedSymbols is package qualified symbols i.e.
	// "pkg.Foo.Field".
	PackageQualifiedSymbols SymbolStyle = "Package"
	// FullyQualifiedSymbols is fully qualified symbols, i.e.
	// "path/to/pkg.Foo.Field".
	FullyQualifiedSymbols SymbolStyle = "Full"
	// DynamicSymbols uses whichever qualifier results in the highest scoring
	// match for the given symbol query. Here a "qualifier" is any "/" or "."
	// delimited suffix of the fully qualified symbol. i.e. "to/pkg.Foo.Field" or
	// just "Foo.Field".
	DynamicSymbols SymbolStyle = "Dynamic"
)

// A SymbolScope controls the search scope for workspace/symbol requests.
type SymbolScope string

const (
	// WorkspaceSymbolScope matches symbols in workspace packages only.
	WorkspaceSymbolScope SymbolScope = "workspace"
	// AllSymbolScope matches symbols in any loaded package, including
	// dependencies.
	AllSymbolScope SymbolScope = "all"
)

type HoverKind string

const (
	SingleLine            HoverKind = "SingleLine"
	NoDocumentation       HoverKind = "NoDocumentation"
	SynopsisDocumentation HoverKind = "SynopsisDocumentation"
	FullDocumentation     HoverKind = "FullDocumentation"

	// Structured is an experimental setting that returns a structured hover format.
	// This format separates the signature from the documentation, so that the client
	// can do more manipulation of these fields.
	//
	// This should only be used by clients that support this behavior.
	Structured HoverKind = "Structured"
)

type DiagnosticsTrigger string

const (
	// Trigger diagnostics on file edit and save. (default)
	DiagnosticsOnEdit DiagnosticsTrigger = "Edit"
	// Trigger diagnostics only on file save. Events like initial workspace load
	// or configuration change will still trigger diagnostics.
	DiagnosticsOnSave DiagnosticsTrigger = "Save"
	// TODO: support "Manual"?
)

type OptionResults []OptionResult

type OptionResult struct {
	Name  string
	Value any
	Error error
}

func SetOptions(options *Options, opts any) OptionResults {
	var results OptionResults
	switch opts := opts.(type) {
	case nil:
	case map[string]any:
		// If the user's settings contains "allExperiments", set that first,
		// and then let them override individual settings independently.
		var enableExperiments bool
		for name, value := range opts {
			if b, ok := value.(bool); name == "allExperiments" && ok && b {
				enableExperiments = true
				options.EnableAllExperiments()
			}
		}
		seen := map[string]struct{}{}
		for name, value := range opts {
			results = append(results, options.set(name, value, seen))
		}
		// Finally, enable any experimental features that are specified in
		// maps, which allows users to individually toggle them on or off.
		if enableExperiments {
			options.enableAllExperimentMaps()
		}
	default:
		results = append(results, OptionResult{
			Value: opts,
			Error: fmt.Errorf("Invalid options type %T", opts),
		})
	}
	return results
}

func (o *Options) ForClientCapabilities(clientName *protocol.ClientInfo, caps protocol.ClientCapabilities) {
	o.ClientInfo = clientName
	// Check if the client supports snippets in completion items.
	if caps.Workspace.WorkspaceEdit != nil {
		o.SupportedResourceOperations = caps.Workspace.WorkspaceEdit.ResourceOperations
	}
	if c := caps.TextDocument.Completion; c.CompletionItem.SnippetSupport {
		o.InsertTextFormat = protocol.SnippetTextFormat
	}
	// Check if the client supports configuration messages.
	o.ConfigurationSupported = caps.Workspace.Configuration
	o.DynamicConfigurationSupported = caps.Workspace.DidChangeConfiguration.DynamicRegistration
	o.DynamicRegistrationSemanticTokensSupported = caps.TextDocument.SemanticTokens.DynamicRegistration
	o.DynamicWatchedFilesSupported = caps.Workspace.DidChangeWatchedFiles.DynamicRegistration
	o.RelativePatternsSupported = caps.Workspace.DidChangeWatchedFiles.RelativePatternSupport

	// Check which types of content format are supported by this client.
	if hover := caps.TextDocument.Hover; hover != nil && len(hover.ContentFormat) > 0 {
		o.PreferredContentFormat = hover.ContentFormat[0]
	}
	// Check if the client supports only line folding.

	if fr := caps.TextDocument.FoldingRange; fr != nil {
		o.LineFoldingOnly = fr.LineFoldingOnly
	}
	// Check if the client supports hierarchical document symbols.
	o.HierarchicalDocumentSymbolSupport = caps.TextDocument.DocumentSymbol.HierarchicalDocumentSymbolSupport

	// Client's semantic tokens
	o.SemanticTypes = caps.TextDocument.SemanticTokens.TokenTypes
	o.SemanticMods = caps.TextDocument.SemanticTokens.TokenModifiers
	// we don't need Requests, as we support full functionality
	// we don't need Formats, as there is only one, for now

	// Check if the client supports diagnostic related information.
	o.RelatedInformationSupported = caps.TextDocument.PublishDiagnostics.RelatedInformation
	// Check if the client completion support includes tags (preferred) or deprecation
	if caps.TextDocument.Completion.CompletionItem.TagSupport != nil &&
		caps.TextDocument.Completion.CompletionItem.TagSupport.ValueSet != nil {
		o.CompletionTags = true
	} else if caps.TextDocument.Completion.CompletionItem.DeprecatedSupport {
		o.CompletionDeprecated = true
	}

	// Check if the client supports code actions resolving.
	if caps.TextDocument.CodeAction.DataSupport && caps.TextDocument.CodeAction.ResolveSupport != nil {
		o.CodeActionResolveOptions = caps.TextDocument.CodeAction.ResolveSupport.Properties
	}
}

func (o *Options) Clone() *Options {
	// TODO(rfindley): has this function gone stale? It appears that there are
	// settings that are incorrectly cloned here (such as TemplateExtensions).
	result := &Options{
		ClientOptions:   o.ClientOptions,
		InternalOptions: o.InternalOptions,
		Hooks: Hooks{
			StaticcheckSupported: o.StaticcheckSupported,
			GofumptFormat:        o.GofumptFormat,
			URLRegexp:            o.URLRegexp,
		},
		ServerOptions: o.ServerOptions,
		UserOptions:   o.UserOptions,
	}
	// Fully clone any slice or map fields. Only Hooks, ExperimentalOptions,
	// and UserOptions can be modified.
	copyStringMap := func(src map[string]bool) map[string]bool {
		dst := make(map[string]bool)
		for k, v := range src {
			dst[k] = v
		}
		return dst
	}
	result.Analyses = copyStringMap(o.Analyses)
	result.Codelenses = copyStringMap(o.Codelenses)

	copySlice := func(src []string) []string {
		dst := make([]string, len(src))
		copy(dst, src)
		return dst
	}
	result.SetEnvSlice(o.EnvSlice())
	result.BuildFlags = copySlice(o.BuildFlags)
	result.DirectoryFilters = copySlice(o.DirectoryFilters)
	result.StandaloneTags = copySlice(o.StandaloneTags)

	copyAnalyzerMap := func(src map[string]*Analyzer) map[string]*Analyzer {
		dst := make(map[string]*Analyzer)
		for k, v := range src {
			dst[k] = v
		}
		return dst
	}
	result.DefaultAnalyzers = copyAnalyzerMap(o.DefaultAnalyzers)
	result.StaticcheckAnalyzers = copyAnalyzerMap(o.StaticcheckAnalyzers)
	return result
}

func (o *Options) AddStaticcheckAnalyzer(a *analysis.Analyzer, enabled bool, severity protocol.DiagnosticSeverity) {
	o.StaticcheckAnalyzers[a.Name] = &Analyzer{
		Analyzer: a,
		Enabled:  enabled,
		Severity: severity,
	}
}

// EnableAllExperiments turns on all of the experimental "off-by-default"
// features offered by gopls. Any experimental features specified in maps
// should be enabled in enableAllExperimentMaps.
func (o *Options) EnableAllExperiments() {
	o.SemanticTokens = true
}

func (o *Options) enableAllExperimentMaps() {
}

// validateDirectoryFilter validates if the filter string
// - is not empty
// - start with either + or -
// - doesn't contain currently unsupported glob operators: *, ?
func validateDirectoryFilter(ifilter string) (string, error) {
	filter := fmt.Sprint(ifilter)
	if filter == "" || (filter[0] != '+' && filter[0] != '-') {
		return "", fmt.Errorf("invalid filter %v, must start with + or -", filter)
	}
	segs := strings.Split(filter[1:], "/")
	unsupportedOps := [...]string{"?", "*"}
	for _, seg := range segs {
		if seg != "**" {
			for _, op := range unsupportedOps {
				if strings.Contains(seg, op) {
					return "", fmt.Errorf("invalid filter %v, operator %v not supported. If you want to have this operator supported, consider filing an issue.", filter, op)
				}
			}
		}
	}

	return strings.TrimRight(filepath.FromSlash(filter), "/"), nil
}

func (o *Options) set(name string, value interface{}, seen map[string]struct{}) OptionResult {
	// Flatten the name in case we get options with a hierarchy.
	split := strings.Split(name, ".")
	name = split[len(split)-1]

	result := OptionResult{Name: name, Value: value}
	if _, ok := seen[name]; ok {
		result.parseErrorf("duplicate configuration for %s", name)
	}
	seen[name] = struct{}{}

	switch name {
	case "env":
		menv, ok := value.(map[string]interface{})
		if !ok {
			result.parseErrorf("invalid type %T, expect map", value)
			break
		}
		if o.Env == nil {
			o.Env = make(map[string]string)
		}
		for k, v := range menv {
			o.Env[k] = fmt.Sprint(v)
		}

	case "buildFlags":
		// TODO(rfindley): use asStringSlice.
		iflags, ok := value.([]interface{})
		if !ok {
			result.parseErrorf("invalid type %T, expect list", value)
			break
		}
		flags := make([]string, 0, len(iflags))
		for _, flag := range iflags {
			flags = append(flags, fmt.Sprintf("%s", flag))
		}
		o.BuildFlags = flags

	case "directoryFilters":
		// TODO(rfindley): use asStringSlice.
		ifilters, ok := value.([]interface{})
		if !ok {
			result.parseErrorf("invalid type %T, expect list", value)
			break
		}
		var filters []string
		for _, ifilter := range ifilters {
			filter, err := validateDirectoryFilter(fmt.Sprintf("%v", ifilter))
			if err != nil {
				result.parseErrorf("%v", err)
				return result
			}
			filters = append(filters, strings.TrimRight(filepath.FromSlash(filter), "/"))
		}
		o.DirectoryFilters = filters

	case "memoryMode":
		result.deprecated("")
	case "completionDocumentation":
		result.setBool(&o.CompletionDocumentation)
	case "usePlaceholders":
		result.setBool(&o.UsePlaceholders)
	case "deepCompletion":
		result.setBool(&o.DeepCompletion)
	case "completeUnimported":
		result.setBool(&o.CompleteUnimported)
	case "completionBudget":
		result.setDuration(&o.CompletionBudget)
	case "matcher":
		if s, ok := result.asOneOf(
			string(Fuzzy),
			string(CaseSensitive),
			string(CaseInsensitive),
		); ok {
			o.Matcher = Matcher(s)
		}

	case "symbolMatcher":
		if s, ok := result.asOneOf(
			string(SymbolFuzzy),
			string(SymbolFastFuzzy),
			string(SymbolCaseInsensitive),
			string(SymbolCaseSensitive),
		); ok {
			o.SymbolMatcher = SymbolMatcher(s)
		}

	case "symbolStyle":
		if s, ok := result.asOneOf(
			string(FullyQualifiedSymbols),
			string(PackageQualifiedSymbols),
			string(DynamicSymbols),
		); ok {
			o.SymbolStyle = SymbolStyle(s)
		}

	case "symbolScope":
		if s, ok := result.asOneOf(
			string(WorkspaceSymbolScope),
			string(AllSymbolScope),
		); ok {
			o.SymbolScope = SymbolScope(s)
		}

	case "hoverKind":
		if s, ok := result.asOneOf(
			string(NoDocumentation),
			string(SingleLine),
			string(SynopsisDocumentation),
			string(FullDocumentation),
			string(Structured),
		); ok {
			o.HoverKind = HoverKind(s)
		}

	case "linkTarget":
		result.setString(&o.LinkTarget)

	case "linksInHover":
		result.setBool(&o.LinksInHover)

	case "importShortcut":
		if s, ok := result.asOneOf(string(BothShortcuts), string(LinkShortcut), string(DefinitionShortcut)); ok {
			o.ImportShortcut = ImportShortcut(s)
		}

	case "analyses":
		result.setBoolMap(&o.Analyses)

	case "hints":
		result.setBoolMap(&o.Hints)

	case "annotations":
		result.setAnnotationMap(&o.Annotations)

	case "codelenses", "codelens":
		var lensOverrides map[string]bool
		result.setBoolMap(&lensOverrides)
		if result.Error == nil {
			if o.Codelenses == nil {
				o.Codelenses = make(map[string]bool)
			}
			for lens, enabled := range lensOverrides {
				o.Codelenses[lens] = enabled
			}
		}

		// codelens is deprecated, but still works for now.
		// TODO(rstambler): Remove this for the gopls/v0.7.0 release.
		if name == "codelens" {
			result.deprecated("codelenses")
		}

	case "staticcheck":
		if v, ok := result.asBool(); ok {
			o.Staticcheck = v
			if v && !o.StaticcheckSupported {
				result.Error = fmt.Errorf("applying setting %q: staticcheck is not supported at %s;"+
					" rebuild gopls with a more recent version of Go", result.Name, runtime.Version())
			}
		}

	case "local":
		result.setString(&o.Local)

	case "verboseOutput":
		result.setBool(&o.VerboseOutput)

	case "verboseWorkDoneProgress":
		result.setBool(&o.VerboseWorkDoneProgress)

	case "tempModFile":
		result.deprecated("")

	case "showBugReports":
		result.setBool(&o.ShowBugReports)

	case "gofumpt":
		if v, ok := result.asBool(); ok {
			o.Gofumpt = v
			if v && o.GofumptFormat == nil {
				result.Error = fmt.Errorf("applying setting %q: gofumpt is not supported at %s;"+
					" rebuild gopls with a more recent version of Go", result.Name, runtime.Version())
			}
		}
	case "completeFunctionCalls":
		result.setBool(&o.CompleteFunctionCalls)

	case "semanticTokens":
		result.setBool(&o.SemanticTokens)

	case "noSemanticString":
		result.setBool(&o.NoSemanticString)

	case "noSemanticNumber":
		result.setBool(&o.NoSemanticNumber)

	case "expandWorkspaceToModule":
		// See golang/go#63536: we can consider deprecating
		// expandWorkspaceToModule, but probably need to change the default
		// behavior in that case to *not* expand to the module.
		result.setBool(&o.ExpandWorkspaceToModule)

	case "experimentalPostfixCompletions":
		result.setBool(&o.ExperimentalPostfixCompletions)

	case "experimentalWorkspaceModule":
		result.deprecated("")

	case "experimentalTemplateSupport": // TODO(pjw): remove after June 2022
		result.deprecated("")

	case "templateExtensions":
		if iexts, ok := value.([]interface{}); ok {
			ans := []string{}
			for _, x := range iexts {
				ans = append(ans, fmt.Sprint(x))
			}
			o.TemplateExtensions = ans
			break
		}
		if value == nil {
			o.TemplateExtensions = nil
			break
		}
		result.parseErrorf("unexpected type %T not []string", value)

	case "experimentalDiagnosticsDelay":
		result.deprecated("diagnosticsDelay")

	case "diagnosticsDelay":
		result.setDuration(&o.DiagnosticsDelay)

	case "diagnosticsTrigger":
		if s, ok := result.asOneOf(
			string(DiagnosticsOnEdit),
			string(DiagnosticsOnSave),
		); ok {
			o.DiagnosticsTrigger = DiagnosticsTrigger(s)
		}

	case "analysisProgressReporting":
		result.setBool(&o.AnalysisProgressReporting)

	case "experimentalWatchedFileDelay":
		result.deprecated("")

	case "experimentalPackageCacheKey":
		result.deprecated("")

	case "allowModfileModifications":
		result.softErrorf("gopls setting \"allowModfileModifications\" is deprecated.\nPlease comment on https://go.dev/issue/65546 if this impacts your workflow.")
		result.setBool(&o.AllowModfileModifications)

	case "allowImplicitNetworkAccess":
		result.setBool(&o.AllowImplicitNetworkAccess)

	case "experimentalUseInvalidMetadata":
		result.deprecated("")

	case "standaloneTags":
		result.setStringSlice(&o.StandaloneTags)

	case "allExperiments":
		// This setting should be handled before all of the other options are
		// processed, so do nothing here.

	case "newDiff":
		result.deprecated("")

	case "subdirWatchPatterns":
		if s, ok := result.asOneOf(
			string(SubdirWatchPatternsOn),
			string(SubdirWatchPatternsOff),
			string(SubdirWatchPatternsAuto),
		); ok {
			o.SubdirWatchPatterns = SubdirWatchPatterns(s)
		}

	case "reportAnalysisProgressAfter":
		result.setDuration(&o.ReportAnalysisProgressAfter)

	case "telemetryPrompt":
		result.setBool(&o.TelemetryPrompt)

	case "linkifyShowMessage":
		result.setBool(&o.LinkifyShowMessage)

	case "includeReplaceInWorkspace":
		result.setBool(&o.IncludeReplaceInWorkspace)

	case "zeroConfig":
		result.setBool(&o.ZeroConfig)

	// Replaced settings.
	case "experimentalDisabledAnalyses":
		result.deprecated("analyses")

	case "disableDeepCompletion":
		result.deprecated("deepCompletion")

	case "disableFuzzyMatching":
		result.deprecated("fuzzyMatching")

	case "wantCompletionDocumentation":
		result.deprecated("completionDocumentation")

	case "wantUnimportedCompletions":
		result.deprecated("completeUnimported")

	case "fuzzyMatching":
		result.deprecated("matcher")

	case "caseSensitiveCompletion":
		result.deprecated("matcher")

	// Deprecated settings.
	case "wantSuggestedFixes":
		result.deprecated("")

	case "noIncrementalSync":
		result.deprecated("")

	case "watchFileChanges":
		result.deprecated("")

	case "go-diff":
		result.deprecated("")

	default:
		result.unexpected()
	}
	return result
}

// parseErrorf reports an error parsing the current configuration value.
func (r *OptionResult) parseErrorf(msg string, values ...interface{}) {
	if false {
		_ = fmt.Sprintf(msg, values...) // this causes vet to check this like printf
	}
	prefix := fmt.Sprintf("parsing setting %q: ", r.Name)
	r.Error = fmt.Errorf(prefix+msg, values...)
}

// A SoftError is an error that does not affect the functionality of gopls.
type SoftError struct {
	msg string
}

func (e *SoftError) Error() string {
	return e.msg
}

// deprecated reports the current setting as deprecated. If 'replacement' is
// non-nil, it is suggested to the user.
func (r *OptionResult) deprecated(replacement string) {
	msg := fmt.Sprintf("gopls setting %q is deprecated", r.Name)
	if replacement != "" {
		msg = fmt.Sprintf("%s, use %q instead", msg, replacement)
	}
	r.Error = &SoftError{msg}
}

// softErrorf reports a soft error related to the current option.
func (r *OptionResult) softErrorf(format string, args ...any) {
	r.Error = &SoftError{fmt.Sprintf(format, args...)}
}

// unexpected reports that the current setting is not known to gopls.
func (r *OptionResult) unexpected() {
	r.Error = fmt.Errorf("unexpected gopls setting %q", r.Name)
}

func (r *OptionResult) asBool() (bool, bool) {
	b, ok := r.Value.(bool)
	if !ok {
		r.parseErrorf("invalid type %T, expect bool", r.Value)
		return false, false
	}
	return b, true
}

func (r *OptionResult) setBool(b *bool) {
	if v, ok := r.asBool(); ok {
		*b = v
	}
}

func (r *OptionResult) setDuration(d *time.Duration) {
	if v, ok := r.asString(); ok {
		parsed, err := time.ParseDuration(v)
		if err != nil {
			r.parseErrorf("failed to parse duration %q: %v", v, err)
			return
		}
		*d = parsed
	}
}

func (r *OptionResult) setBoolMap(bm *map[string]bool) {
	m := r.asBoolMap()
	*bm = m
}

func (r *OptionResult) setAnnotationMap(bm *map[Annotation]bool) {
	all := r.asBoolMap()
	if all == nil {
		return
	}
	// Default to everything enabled by default.
	m := make(map[Annotation]bool)
	for k, enabled := range all {
		a, err := asOneOf(
			k,
			string(Nil),
			string(Escape),
			string(Inline),
			string(Bounds),
		)
		if err != nil {
			// In case of an error, process any legacy values.
			switch k {
			case "noEscape":
				m[Escape] = false
				r.parseErrorf(`"noEscape" is deprecated, set "Escape: false" instead`)
			case "noNilcheck":
				m[Nil] = false
				r.parseErrorf(`"noNilcheck" is deprecated, set "Nil: false" instead`)
			case "noInline":
				m[Inline] = false
				r.parseErrorf(`"noInline" is deprecated, set "Inline: false" instead`)
			case "noBounds":
				m[Bounds] = false
				r.parseErrorf(`"noBounds" is deprecated, set "Bounds: false" instead`)
			default:
				r.parseErrorf("%v", err)
			}
			continue
		}
		m[Annotation(a)] = enabled
	}
	*bm = m
}

func (r *OptionResult) asBoolMap() map[string]bool {
	all, ok := r.Value.(map[string]interface{})
	if !ok {
		r.parseErrorf("invalid type %T for map[string]bool option", r.Value)
		return nil
	}
	m := make(map[string]bool)
	for a, enabled := range all {
		if e, ok := enabled.(bool); ok {
			m[a] = e
		} else {
			r.parseErrorf("invalid type %T for map key %q", enabled, a)
			return m
		}
	}
	return m
}

func (r *OptionResult) asString() (string, bool) {
	b, ok := r.Value.(string)
	if !ok {
		r.parseErrorf("invalid type %T, expect string", r.Value)
		return "", false
	}
	return b, true
}

func (r *OptionResult) asStringSlice() ([]string, bool) {
	iList, ok := r.Value.([]interface{})
	if !ok {
		r.parseErrorf("invalid type %T, expect list", r.Value)
		return nil, false
	}
	var list []string
	for _, elem := range iList {
		s, ok := elem.(string)
		if !ok {
			r.parseErrorf("invalid element type %T, expect string", elem)
			return nil, false
		}
		list = append(list, s)
	}
	return list, true
}

func (r *OptionResult) asOneOf(options ...string) (string, bool) {
	s, ok := r.asString()
	if !ok {
		return "", false
	}
	s, err := asOneOf(s, options...)
	if err != nil {
		r.parseErrorf("%v", err)
	}
	return s, err == nil
}

func asOneOf(str string, options ...string) (string, error) {
	lower := strings.ToLower(str)
	for _, opt := range options {
		if strings.ToLower(opt) == lower {
			return opt, nil
		}
	}
	return "", fmt.Errorf("invalid option %q for enum", str)
}

func (r *OptionResult) setString(s *string) {
	if v, ok := r.asString(); ok {
		*s = v
	}
}

func (r *OptionResult) setStringSlice(s *[]string) {
	if v, ok := r.asStringSlice(); ok {
		*s = v
	}
}

func analyzers() map[string]*Analyzer {
	return map[string]*Analyzer{}
}

func urlRegexp() *regexp.Regexp {
	// Ensure links are matched as full words, not anywhere.
	re := regexp.MustCompile(`\b(http|ftp|https)://([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?\b`)
	re.Longest()
	return re
}