| 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 |
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
5384x
2870x
256x
2614x
2614x
2x
868x
868x
2x
755x
755x
2x
525x
2x
6x
6x
2x
1464x
177x
1287x
2x
31x
31x
31x
2x
1176x
2x
3376x
1844x
1532x
1532x
1532x
1532x
2x
5x
5x
2x
8x
8x
8x
2x
622x
2x
3253x
3253x
2x
3189x
2x
3206x
3206x
3206x
2x
2353x
2x
2565x
2565x
2565x
2565x
2x
2190x
1460x
730x
2x
555x
555x
306x
249x
2x
2823x
2823x
2x
3189x
2x
2900x
2900x
2x
3206x
2x
3469x
19x
3450x
145x
3305x
1304x
2001x
22x
22x
22x
9x
13x
9x
4x
4x
1979x
1469x
510x
317x
193x
30x
163x
47x
116x
5x
111x
5x
106x
106x
4104x
4104x
4104x
25x
4079x
177x
3902x
1338x
2564x
20x
20x
9x
11x
8x
3x
3x
2544x
1881x
663x
392x
271x
46x
46x
77x
225x
123x
123x
102x
8x
8x
8x
8x
94x
8x
8x
8x
86x
86x
86x
86x
86x
86x
2x
1421x
2x
507x
507x
2x
831x
2485x
2485x
2485x
3185x
2485x
2818x
2818x
2818x
2818x
3892x
2818x
2x
317x
30x
30x
30x
50x
30x
2x
79x
79x
79x
79x
79x
79x
79x
2x
5x
5x
5x
5x
5x
2x
84x
84x
79x
5x
5x
2x
390x
170x
170x
36x
14x
2x
644x
8x
636x
246x
240x
240x
6x
6x
6x
390x
390x
390x
6x
390x
2x
2261x
2261x
1638x
1638x
1638x
1638x
1638x
1638x
1638x
623x
555x
555x
555x
555x
555x
555x
555x
555x
555x
555x
555x
555x
68x
54x
54x
54x
54x
54x
54x
54x
54x
14x
6x
6x
6x
6x
6x
6x
8x
8x
8x
8x
8x
8x
8x
8x
2261x
2x
1638x
720x
918x
415x
503x
78x
425x
411x
14x
14x
2x
2261x
2261x
623x
1638x
1638x
967x
671x
671x
1516x
1516x
1285x
231x
32x
199x
136x
63x
63x
97x
1516x
217x
1516x
1035x
1035x
1035x
961x
961x
961x
961x
107x
107x
854x
74x
35x
35x
39x
39x
39x
54x
39x
39x
2x
217x
217x
50x
167x
167x
2x
134x
134x
134x
567x
567x
567x
567x
26x
40x
567x
593x
593x
2x
97x
97x
2x
54x
54x
54x
2x
726x
2x
247x
247x
247x
247x
2x
1464x
1464x
1464x
1464x
1464x
1464x
1464x
1464x
161x
1464x
1464x
1464x
1464x
1464x
177x
1464x
35x
1464x
22x
1464x
2x
308x
308x
308x
308x
308x
308x
308x
308x
308x
54x
308x
308x
308x
308x
308x
31x
308x
308x
19x
308x
308x
12x
308x
2x
511x
511x
505x
6x
2x
511x
505x
6x
2x
1769x
1769x
531x
1238x
1769x
1769x
135x
1769x
1464x
1464x
161x
175x
161x
147x
14x
70x
70x
70x
4x
66x
58x
8x
8x
16x
8x
1464x
1464x
1561x
308x
355x
57x
57x
67x
31x
31x
37x
31x
2x
1561x
2x
355x
337x
18x
2x
167x
2x
58x
27x
15x
8x
2x
6x
2x
1736x
2x
417x
2x
1561x
2x
355x
2x
167x
167x
2x
58x
2x
8x
4x
4x
4x
2x
4x
2x
2x
2x
2x
2x
136x
164x
2x
107x
120x
107x
2x
23958x
| /**
* Copyright 2017 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as api from '../protos/firestore_proto_api';
import { Blob } from '../api/blob';
import { GeoPoint } from '../api/geo_point';
import { DatabaseId } from '../core/database_info';
import {
Bound,
Direction,
Filter,
NanFilter,
NullFilter,
OrderBy,
Query,
RelationFilter,
RelationOp
} from '../core/query';
import { SnapshotVersion } from '../core/snapshot_version';
import { Timestamp } from '../core/timestamp';
import { ProtoByteString, TargetId } from '../core/types';
import { QueryData, QueryPurpose } from '../local/query_data';
import { Document, MaybeDocument, NoDocument } from '../model/document';
import { DocumentKey } from '../model/document_key';
import * as fieldValue from '../model/field_value';
import {
DeleteMutation,
FieldMask,
FieldTransform,
Mutation,
MutationResult,
PatchMutation,
Precondition,
ServerTimestampTransform,
SetMutation,
TransformMutation
} from '../model/mutation';
import { FieldPath, ResourcePath } from '../model/path';
import { assert, fail } from '../util/assert';
import { Code, FirestoreError } from '../util/error';
import { AnyJs } from '../util/misc';
import * as obj from '../util/obj';
import * as typeUtils from '../util/types';
import { ExistenceFilter } from './existence_filter';
import { mapCodeFromRpcCode, mapRpcCodeFromCode } from './rpc_error';
import {
DocumentWatchChange,
ExistenceFilterChange,
WatchChange,
WatchTargetChange,
WatchTargetChangeState
} from './watch_change';
import { ApiClientObjectMap } from '../protos/firestore_proto_api';
const DIRECTIONS = (() => {
const dirs: { [dir: string]: api.OrderDirection } = {};
dirs[Direction.ASCENDING.name] = 'ASCENDING';
dirs[Direction.DESCENDING.name] = 'DESCENDING';
return dirs;
})();
const OPERATORS = (() => {
const ops: { [op: string]: api.FieldFilterOp } = {};
ops[RelationOp.LESS_THAN.name] = 'LESS_THAN';
ops[RelationOp.LESS_THAN_OR_EQUAL.name] = 'LESS_THAN_OR_EQUAL';
ops[RelationOp.GREATER_THAN.name] = 'GREATER_THAN';
ops[RelationOp.GREATER_THAN_OR_EQUAL.name] = 'GREATER_THAN_OR_EQUAL';
ops[RelationOp.EQUAL.name] = 'EQUAL';
return ops;
})();
function assertPresent(value: AnyJs, description: string) {
assert(!typeUtils.isNullOrUndefined(value), description + ' is missing');
}
function parseInt64(value: number | string): number {
// TODO(bjornick): Handle int64 greater than 53 bits.
if (typeof value === 'number') {
return value;
} else Eif (typeof value === 'string') {
return Number(value);
} else {
return fail("can't parse " + value);
}
}
// This is a supplement to the generated proto interfaces, which fail to account
// for the fact that a timestamp may be encoded as either a string OR this.
interface TimestampProto {
seconds?: string;
nanos?: number;
}
export interface SerializerOptions {
/**
* The serializer supports both Protobuf.js and Proto3 JSON formats. By
* setting this flag to true, the serializer will use the Proto3 JSON format.
*
* For a description of the Proto3 JSON format check
* https://developers.google.com/protocol-buffers/docs/proto3#json
*/
useProto3Json: boolean;
}
/**
* Generates JsonObject values for the Datastore API suitable for sending to
* either GRPC stub methods or via the JSON/HTTP REST API.
* TODO(klimt): We can remove the databaseId argument if we keep the full
* resource name in documents.
*/
export class JsonProtoSerializer {
constructor(
private databaseId: DatabaseId,
private options: SerializerOptions
) {}
private emptyByteString(): ProtoByteString {
Eif (this.options.useProto3Json) {
return '';
} else {
return new Uint8Array(0);
}
}
private unsafeCastProtoByteString(byteString: ProtoByteString): string {
// byteStrings can be either string or UInt8Array, but the typings say
// it's always a string. Cast as string to avoid type check failing
return byteString as string;
}
fromRpcStatus(status: api.Status): FirestoreError {
const code =
status.code === undefined
? Code.UNKNOWN
: mapCodeFromRpcCode(status.code);
return new FirestoreError(code, status.message || '');
}
/**
* Returns a value for a number (or undefined) that's appropriate to put into
* a google.protobuf.Int32Value proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "number" because that's what
* our generated proto interfaces say Int32Value must be. But GRPC actually
* expects a { value: <number> } struct.
*/
private toInt32Value(val: number | null): number | undefined {
if (!typeUtils.isNullOrUndefined(val)) {
// tslint:disable-next-line:no-any We need to match generated Proto types.
return { value: val } as any;
} else {
return undefined;
}
}
/**
* Returns a number (or null) from a google.protobuf.Int32Value proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as accepting "number" because that's what
* our generated proto interfaces say Int32Value must be, but it actually
* accepts { value: number } to match our serialization in toInt32Value().
*/
private fromInt32Value(val: number | undefined): number | null {
let result;
Eif (typeof val === 'object') {
// tslint:disable-next-line:no-any We need to match generated Proto types.
result = (val as any).value;
} else {
// We accept raw numbers (without the {value: ... } wrapper) for
// compatibility with legacy persisted data.
result = val;
}
return typeUtils.isNullOrUndefined(result) ? null : result;
}
/**
* Returns a value for a Date that's appropriate to put into a proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "string" because that's what
* our generated proto interfaces say dates must be. But it's easier and safer
* to actually return a Timestamp proto.
*/
private toTimestamp(timestamp: Timestamp): string {
return {
seconds: timestamp.seconds,
nanos: timestamp.nanos
// tslint:disable-next-line:no-any
} as any;
}
private fromTimestamp(date: string | TimestampProto): Timestamp {
// The json interface (for the browser) will return an iso timestamp string,
// while the proto js library (for node) will return a
// google.protobuf.Timestamp instance.
if (typeof date === 'string') {
// TODO(b/37282237): Use strings for Proto3 timestamps
// assert(this.options.useProto3Json,
// 'The timestamp string format requires Proto3.');
return Timestamp.fromISOString(date);
} else {
assert(!!date, 'Cannot deserialize null or undefined timestamp.');
// TODO(b/37282237): Use strings for Proto3 timestamps
// assert(!this.options.useProto3Json,
// 'The timestamp instance format requires Proto JS.');
const seconds = parseInt64(date.seconds || '0');
const nanos = date.nanos || 0;
return new Timestamp(seconds, nanos);
}
}
/**
* Returns a value for bytes that's appropriate to put in a proto.
* DO NOT USE THIS FOR ANYTHING ELSE.
* This method cheats. It's typed as returning "string" because that's what
* our generated proto interfaces say bytes must be. But it should return
* an Uint8Array in Node.
*/
private toBytes(bytes: Blob): string {
Eif (this.options.useProto3Json) {
return bytes.toBase64();
} else {
// The typings say it's a string, but it needs to be a Uint8Array in Node.
return this.unsafeCastProtoByteString(bytes.toUint8Array());
}
}
/**
* Parse the blob from the protos into the internal Blob class. Note that the
* typings assume all blobs are strings, but they are actually Uint8Arrays
* on Node.
*/
private fromBlob(blob: string | Uint8Array): Blob {
Eif (typeof blob === 'string') {
assert(
this.options.useProto3Json,
'Expected bytes to be passed in as Uint8Array, but got a string instead.'
);
return Blob.fromBase64String(blob);
} else {
assert(
!this.options.useProto3Json,
'Expected bytes to be passed in as string, but got something else instead.'
);
return Blob.fromUint8Array(blob);
}
}
toVersion(version: SnapshotVersion): string {
return this.toTimestamp(version.toTimestamp());
}
fromVersion(version: string): SnapshotVersion {
assert(!!version, "Trying to deserialize version that isn't set");
return SnapshotVersion.fromTimestamp(this.fromTimestamp(version));
}
toResourceName(databaseId: DatabaseId, path: ResourcePath): string {
return this.fullyQualifiedPrefixPath(databaseId)
.child('documents')
.child(path)
.canonicalString();
}
fromResourceName(name: string): ResourcePath {
const resource = ResourcePath.fromString(name);
assert(
this.isValidResourceName(resource),
'Tried to deserialize invalid key ' + resource.toString()
);
return resource;
}
toName(key: DocumentKey): string {
return this.toResourceName(this.databaseId, key.path);
}
fromName(name: string): DocumentKey {
const resource = this.fromResourceName(name);
assert(
resource.get(1) === this.databaseId.projectId,
'Tried to deserialize key from different project: ' +
resource.get(1) +
' vs ' +
this.databaseId.projectId
);
assert(
(!resource.get(3) && !this.databaseId.database) ||
resource.get(3) === this.databaseId.database,
'Tried to deserialize key from different database: ' +
resource.get(3) +
' vs ' +
this.databaseId.database
);
return new DocumentKey(this.extractLocalPathFromResourceName(resource));
}
toQueryPath(path: ResourcePath): string {
if (path.length === 0) {
// If the path is empty, the backend requires we leave off the /documents
// at the end.
return this.encodedDatabaseId;
}
return this.toResourceName(this.databaseId, path);
}
fromQueryPath(name: string): ResourcePath {
const resourceName = this.fromResourceName(name);
if (resourceName.length === 4) {
return ResourcePath.EMPTY_PATH;
}
return this.extractLocalPathFromResourceName(resourceName);
}
get encodedDatabaseId(): string {
const path = new ResourcePath([
'projects',
this.databaseId.projectId,
'databases',
this.databaseId.database
]);
return path.canonicalString();
}
private fullyQualifiedPrefixPath(databaseId: DatabaseId): ResourcePath {
return new ResourcePath([
'projects',
databaseId.projectId,
'databases',
databaseId.database
]);
}
private extractLocalPathFromResourceName(
resourceName: ResourcePath
): ResourcePath {
assert(
resourceName.length > 4 && resourceName.get(4) === 'documents',
'tried to deserialize invalid key ' + resourceName.toString()
);
return resourceName.popFirst(5);
}
private isValidResourceName(path: ResourcePath): boolean {
// Resource names have at least 4 components (project ID, database ID)
return (
path.length >= 4 &&
path.get(0) === 'projects' &&
path.get(2) === 'databases'
);
}
toValue(val: fieldValue.FieldValue): api.Value {
if (val instanceof fieldValue.NullValue) {
return { nullValue: 'NULL_VALUE' };
} else if (val instanceof fieldValue.BooleanValue) {
return { booleanValue: val.value() };
} else if (val instanceof fieldValue.IntegerValue) {
return { integerValue: '' + val.value() };
} else if (val instanceof fieldValue.DoubleValue) {
const doubleValue = val.value();
Eif (this.options.useProto3Json) {
// Proto 3 let's us encode NaN and Infinity as string values as
// expected by the backend. This is currently not checked by our unit
// tests because they rely on protobuf.js.
if (isNaN(doubleValue)) {
return { doubleValue: 'NaN' } as {};
} else if (doubleValue === Infinity) {
return { doubleValue: 'Infinity' } as {};
} else Eif (doubleValue === -Infinity) {
return { doubleValue: '-Infinity' } as {};
}
}
return { doubleValue: val.value() };
} else if (val instanceof fieldValue.StringValue) {
return { stringValue: val.value() };
} else if (val instanceof fieldValue.ObjectValue) {
return { mapValue: this.toMapValue(val) };
} else if (val instanceof fieldValue.ArrayValue) {
return { arrayValue: this.toArrayValue(val) };
} else if (val instanceof fieldValue.TimestampValue) {
return {
timestampValue: this.toTimestamp(val.internalValue)
};
} else if (val instanceof fieldValue.GeoPointValue) {
return {
geoPointValue: {
latitude: val.value().latitude,
longitude: val.value().longitude
}
};
} else if (val instanceof fieldValue.BlobValue) {
return {
bytesValue: this.toBytes(val.value())
};
} else Eif (val instanceof fieldValue.RefValue) {
return {
referenceValue: this.toResourceName(val.databaseId, val.key.path)
};
} else {
return fail('Unknown FieldValue ' + JSON.stringify(val));
}
}
fromValue(obj: api.Value): fieldValue.FieldValue {
// tslint:disable-next-line:no-any
const type = (obj as any)['value_type'];
if (hasTag(obj, type, 'nullValue')) {
return fieldValue.NullValue.INSTANCE;
} else if (hasTag(obj, type, 'booleanValue')) {
return fieldValue.BooleanValue.of(obj.booleanValue!);
} else if (hasTag(obj, type, 'integerValue')) {
return new fieldValue.IntegerValue(parseInt64(obj.integerValue!));
} else if (hasTag(obj, type, 'doubleValue')) {
Eif (this.options.useProto3Json) {
// Proto 3 uses the string values 'NaN' and 'Infinity'.
if ((obj.doubleValue as {}) === 'NaN') {
return fieldValue.DoubleValue.NAN;
} else if ((obj.doubleValue as {}) === 'Infinity') {
return fieldValue.DoubleValue.POSITIVE_INFINITY;
} else Eif ((obj.doubleValue as {}) === '-Infinity') {
return fieldValue.DoubleValue.NEGATIVE_INFINITY;
}
}
return new fieldValue.DoubleValue(obj.doubleValue!);
} else if (hasTag(obj, type, 'stringValue')) {
return new fieldValue.StringValue(obj.stringValue!);
} else if (hasTag(obj, type, 'mapValue')) {
return this.fromFields(obj.mapValue!.fields || {});
} else if (hasTag(obj, type, 'arrayValue')) {
// "values" is not present if the array is empty
assertPresent(obj.arrayValue, 'arrayValue');
const values = obj.arrayValue!.values || [];
return new fieldValue.ArrayValue(values.map(v => this.fromValue(v)));
} else if (hasTag(obj, type, 'timestampValue')) {
assertPresent(obj.timestampValue, 'timestampValue');
return new fieldValue.TimestampValue(
this.fromTimestamp(obj.timestampValue!)
);
} else if (hasTag(obj, type, 'geoPointValue')) {
assertPresent(obj.geoPointValue, 'geoPointValue');
const latitude = obj.geoPointValue!.latitude || 0;
const longitude = obj.geoPointValue!.longitude || 0;
return new fieldValue.GeoPointValue(new GeoPoint(latitude, longitude));
} else if (hasTag(obj, type, 'bytesValue')) {
assertPresent(obj.bytesValue, 'bytesValue');
const blob = this.fromBlob(obj.bytesValue!);
return new fieldValue.BlobValue(blob);
} else Eif (hasTag(obj, type, 'referenceValue')) {
assertPresent(obj.referenceValue, 'referenceValue');
const resourceName = this.fromResourceName(obj.referenceValue!);
const dbId = new DatabaseId(resourceName.get(1), resourceName.get(3));
const key = new DocumentKey(
this.extractLocalPathFromResourceName(resourceName)
);
return new fieldValue.RefValue(dbId, key);
} else {
return fail('Unknown Value proto ' + JSON.stringify(obj));
}
}
/** Creates an api.Document from key and fields (but no create/update time) */
toMutationDocument(
key: DocumentKey,
fields: fieldValue.ObjectValue
): api.Document {
return {
name: this.toName(key),
fields: this.toFields(fields)
};
}
toDocument(document: Document): api.Document {
assert(
!document.hasLocalMutations,
"Can't serialize documents with mutations."
);
return {
name: this.toName(document.key),
fields: this.toFields(document.data),
updateTime: this.toTimestamp(document.version.toTimestamp())
};
}
fromDocument(document: api.Document): Document {
return new Document(
this.fromName(document.name!),
this.fromVersion(document.updateTime!),
this.fromFields(document.fields || {}),
{ hasLocalMutations: false }
);
}
toFields(fields: fieldValue.ObjectValue): { [key: string]: api.Value } {
const result: { [key: string]: api.Value } = {};
fields.forEach((key, value) => {
result[key] = this.toValue(value);
});
return result;
}
fromFields(object: {}): fieldValue.ObjectValue {
// Proto map<string, Value> gets mapped to Object, so cast it.
const map = object as { [key: string]: api.Value };
let result = fieldValue.ObjectValue.EMPTY;
obj.forEach(map, (key, value) => {
result = result.set(new FieldPath([key]), this.fromValue(value));
});
return result;
}
toMapValue(map: fieldValue.ObjectValue): api.MapValue {
return {
fields: this.toFields(map)
};
}
toArrayValue(array: fieldValue.ArrayValue): api.ArrayValue {
const result: api.Value[] = [];
array.forEach(value => {
result.push(this.toValue(value));
});
return { values: result };
}
private fromFound(doc: api.BatchGetDocumentsResponse): Document {
assert(
!!doc.found,
'Tried to deserialize a found document from a missing document.'
);
assertPresent(doc.found!.name, 'doc.found.name');
assertPresent(doc.found!.updateTime, 'doc.found.updateTime');
const key = this.fromName(doc.found!.name!);
const version = this.fromVersion(doc.found!.updateTime!);
const fields = this.fromFields(doc.found!.fields || {});
return new Document(key, version, fields, { hasLocalMutations: false });
}
private fromMissing(result: api.BatchGetDocumentsResponse): NoDocument {
assert(
!!result.missing,
'Tried to deserialize a missing document from a found document.'
);
assert(
!!result.readTime,
'Tried to deserialize a missing document without a read time.'
);
const key = this.fromName(result.missing!);
const version = this.fromVersion(result.readTime!);
return new NoDocument(key, version);
}
fromMaybeDocument(result: api.BatchGetDocumentsResponse): MaybeDocument {
// tslint:disable-next-line:no-any
const type = (result as any)['result'];
if (hasTag(result, type, 'found')) {
return this.fromFound(result);
} else Eif (hasTag(result, type, 'missing')) {
return this.fromMissing(result);
}
return fail('invalid batch get response: ' + JSON.stringify(result));
}
private toWatchTargetChangeState(
state: WatchTargetChangeState
): api.TargetChangeTargetChangeType {
switch (state) {
case WatchTargetChangeState.Added:
return 'ADD';
case WatchTargetChangeState.Current:
return 'CURRENT';
case WatchTargetChangeState.NoChange:
return 'NO_CHANGE';
case WatchTargetChangeState.Removed:
return 'REMOVE';
case WatchTargetChangeState.Reset:
return 'RESET';
default:
return fail('Unknown WatchTargetChangeState: ' + state);
}
}
toTestWatchChange(watchChange: WatchChange): api.ListenResponse {
if (watchChange instanceof ExistenceFilterChange) {
return {
filter: {
count: watchChange.existenceFilter.count,
targetId: watchChange.targetId
}
};
}
if (watchChange instanceof DocumentWatchChange) {
if (watchChange.newDoc instanceof Document) {
const doc = watchChange.newDoc;
return {
documentChange: {
document: {
name: this.toName(doc.key),
fields: this.toFields(doc.data),
updateTime: this.toVersion(doc.version)
},
targetIds: watchChange.updatedTargetIds,
removedTargetIds: watchChange.removedTargetIds
}
};
} else Iif (watchChange.newDoc instanceof NoDocument) {
const doc = watchChange.newDoc;
return {
documentDelete: {
document: this.toName(doc.key),
readTime: this.toVersion(doc.version),
removedTargetIds: watchChange.removedTargetIds
}
};
} else Eif (watchChange.newDoc === null) {
return {
documentRemove: {
document: this.toName(watchChange.key),
removedTargetIds: watchChange.removedTargetIds
}
};
}
}
Eif (watchChange instanceof WatchTargetChange) {
let cause: api.Status | undefined = undefined;
if (watchChange.cause) {
cause = {
code: mapRpcCodeFromCode(watchChange.cause.code),
message: watchChange.cause.message
};
}
return {
targetChange: {
targetChangeType: this.toWatchTargetChangeState(watchChange.state),
targetIds: watchChange.targetIds,
resumeToken: this.unsafeCastProtoByteString(watchChange.resumeToken),
cause
}
};
}
return fail('Unrecognized watch change: ' + JSON.stringify(watchChange));
}
fromWatchChange(change: api.ListenResponse): WatchChange {
// tslint:disable-next-line:no-any
const type = (change as any)['response_type'];
let watchChange: WatchChange;
if (hasTag(change, type, 'targetChange')) {
assertPresent(change.targetChange, 'targetChange');
// proto3 default value is unset in JSON (undefined), so use 'NO_CHANGE'
// if unset
const state = this.fromWatchTargetChangeState(
change.targetChange!.targetChangeType || 'NO_CHANGE'
);
const targetIds: TargetId[] = change.targetChange!.targetIds || [];
const resumeToken =
change.targetChange!.resumeToken || this.emptyByteString();
const causeProto = change.targetChange!.cause;
const cause = causeProto && this.fromRpcStatus(causeProto);
watchChange = new WatchTargetChange(
state,
targetIds,
resumeToken,
cause || null
);
} else if (hasTag(change, type, 'documentChange')) {
assertPresent(change.documentChange, 'documentChange');
assertPresent(change.documentChange!.document, 'documentChange.name');
assertPresent(
change.documentChange!.document!.name,
'documentChange.document.name'
);
assertPresent(
change.documentChange!.document!.updateTime,
'documentChange.document.updateTime'
);
const entityChange = change.documentChange!;
const key = this.fromName(entityChange.document!.name!);
const version = this.fromVersion(entityChange.document!.updateTime!);
const fields = this.fromFields(entityChange.document!.fields || {});
const doc = new Document(key, version, fields, {
hasLocalMutations: false
});
const updatedTargetIds = entityChange.targetIds || [];
const removedTargetIds = entityChange.removedTargetIds || [];
watchChange = new DocumentWatchChange(
updatedTargetIds,
removedTargetIds,
doc.key,
doc
);
} else if (hasTag(change, type, 'documentDelete')) {
assertPresent(change.documentDelete, 'documentDelete');
assertPresent(change.documentDelete!.document, 'documentDelete.document');
const docDelete = change.documentDelete!;
const key = this.fromName(docDelete.document!);
const version = docDelete.readTime
? this.fromVersion(docDelete.readTime)
: SnapshotVersion.forDeletedDoc();
const doc = new NoDocument(key, version);
const removedTargetIds = docDelete.removedTargetIds || [];
watchChange = new DocumentWatchChange([], removedTargetIds, doc.key, doc);
} else if (hasTag(change, type, 'documentRemove')) {
assertPresent(change.documentRemove, 'documentRemove');
assertPresent(change.documentRemove!.document, 'documentRemove');
const docRemove = change.documentRemove!;
const key = this.fromName(docRemove.document!);
const removedTargetIds = docRemove.removedTargetIds || [];
watchChange = new DocumentWatchChange([], removedTargetIds, key, null);
} else Eif (hasTag(change, type, 'filter')) {
// TODO(dimond): implement existence filter parsing with strategy.
assertPresent(change.filter, 'filter');
assertPresent(change.filter!.targetId, 'filter.targetId');
const filter = change.filter;
const count = filter!.count || 0;
const existenceFilter = new ExistenceFilter(count);
const targetId = filter!.targetId!;
watchChange = new ExistenceFilterChange(targetId, existenceFilter);
} else {
return fail('Unknown change type ' + JSON.stringify(change));
}
return watchChange;
}
fromWatchTargetChangeState(
state: api.TargetChangeTargetChangeType
): WatchTargetChangeState {
if (state === 'NO_CHANGE') {
return WatchTargetChangeState.NoChange;
} else if (state === 'ADD') {
return WatchTargetChangeState.Added;
} else if (state === 'REMOVE') {
return WatchTargetChangeState.Removed;
} else if (state === 'CURRENT') {
return WatchTargetChangeState.Current;
} else Eif (state === 'RESET') {
return WatchTargetChangeState.Reset;
} else {
return fail('Got unexpected TargetChange.state: ' + state);
}
}
versionFromListenResponse(change: api.ListenResponse): SnapshotVersion {
// We have only reached a consistent snapshot for the entire stream if there
// is a read_time set and it applies to all targets (i.e. the list of
// targets is empty). The backend is guaranteed to send such responses.
// tslint:disable-next-line:no-any
const type = (change as any)['response_type'];
if (!hasTag(change, type, 'targetChange')) {
return SnapshotVersion.MIN;
}
const targetChange = change.targetChange!;
if (targetChange.targetIds && targetChange.targetIds.length) {
return SnapshotVersion.MIN;
}
Iif (!targetChange.readTime) {
return SnapshotVersion.MIN;
}
return this.fromVersion(targetChange.readTime);
}
toMutation(mutation: Mutation): api.Write {
let result: api.Write;
if (mutation instanceof SetMutation) {
result = {
update: this.toMutationDocument(mutation.key, mutation.value)
};
} else if (mutation instanceof DeleteMutation) {
result = { delete: this.toName(mutation.key) };
} else if (mutation instanceof PatchMutation) {
result = {
update: this.toMutationDocument(mutation.key, mutation.data),
updateMask: this.toDocumentMask(mutation.fieldMask)
};
} else Eif (mutation instanceof TransformMutation) {
result = {
transform: {
document: this.toName(mutation.key),
fieldTransforms: mutation.fieldTransforms.map(transform =>
this.toFieldTransform(transform)
)
}
};
} else {
return fail('Unknown mutation type ' + mutation.type);
}
if (!mutation.precondition.isNone) {
result.currentDocument = this.toPrecondition(mutation.precondition);
}
return result;
}
fromMutation(proto: api.Write): Mutation {
const precondition = proto.currentDocument
? this.fromPrecondition(proto.currentDocument)
: Precondition.NONE;
if (proto.update) {
assertPresent(proto.update.name, 'name');
const key = this.fromName(proto.update.name!);
const value = this.fromFields(proto.update.fields || {});
if (proto.updateMask) {
const fieldMask = this.fromDocumentMask(proto.updateMask);
return new PatchMutation(key, value, fieldMask, precondition);
} else {
return new SetMutation(key, value, precondition);
}
} else if (proto.delete) {
const key = this.fromName(proto.delete);
return new DeleteMutation(key, precondition);
} else Eif (proto.transform) {
const key = this.fromName(proto.transform.document!);
const fieldTransforms = proto.transform.fieldTransforms!.map(transform =>
this.fromFieldTransform(transform)
);
assert(
precondition.exists === true,
'Transforms only support precondition "exists == true"'
);
return new TransformMutation(key, fieldTransforms);
} else {
return fail('unknown mutation proto: ' + JSON.stringify(proto));
}
}
private toPrecondition(precondition: Precondition): api.Precondition {
assert(!precondition.isNone, "Can't serialize an empty precondition");
if (precondition.updateTime !== undefined) {
return {
updateTime: this.toVersion(precondition.updateTime)
};
} else Eif (precondition.exists !== undefined) {
return { exists: precondition.exists };
} else {
return fail('Unknown precondition');
}
}
private fromPrecondition(precondition: api.Precondition): Precondition {
Iif (precondition.updateTime !== undefined) {
return Precondition.updateTime(this.fromVersion(precondition.updateTime));
} else Eif (precondition.exists !== undefined) {
return Precondition.exists(precondition.exists);
} else {
return Precondition.NONE;
}
}
private fromWriteResult(proto: api.WriteResult): MutationResult {
// NOTE: Deletes don't have an updateTime.
const version = proto.updateTime
? this.fromVersion(proto.updateTime)
: null;
let transformResults: fieldValue.FieldValue[] | null = null;
if (proto.transformResults && proto.transformResults.length > 0) {
transformResults = proto.transformResults.map(result =>
this.fromValue(result)
);
}
return new MutationResult(version, transformResults);
}
fromWriteResults(protos: api.WriteResult[] | undefined): MutationResult[] {
return (protos || []).map(proto => this.fromWriteResult(proto));
}
private toFieldTransform(fieldTransform: FieldTransform): api.FieldTransform {
assert(
fieldTransform.transform instanceof ServerTimestampTransform,
'Unknown transform: ' + fieldTransform.transform
);
return {
fieldPath: fieldTransform.field.canonicalString(),
setToServerValue: 'REQUEST_TIME'
};
}
private fromFieldTransform(proto: api.FieldTransform): FieldTransform {
assert(
proto.setToServerValue! === 'REQUEST_TIME',
'Unknown transform proto: ' + JSON.stringify(proto)
);
const fieldPath = FieldPath.fromServerFormat(proto.fieldPath!);
return new FieldTransform(fieldPath, ServerTimestampTransform.instance);
}
toDocumentsTarget(query: Query): api.DocumentsTarget {
return { documents: [this.toQueryPath(query.path)] };
}
fromDocumentsTarget(documentsTarget: api.DocumentsTarget): Query {
const count = documentsTarget.documents!.length;
assert(
count === 1,
'DocumentsTarget contained other than 1 document: ' + count
);
const name = documentsTarget.documents![0];
return Query.atPath(this.fromQueryPath(name));
}
toQueryTarget(query: Query): api.QueryTarget {
// Dissect the path into parent, collectionId, and optional key filter.
const result: api.QueryTarget = { structuredQuery: {} };
Iif (query.path.isEmpty()) {
result.parent = this.toQueryPath(ResourcePath.EMPTY_PATH);
} else {
const path = query.path;
assert(
path.length % 2 !== 0,
'Document queries with filters are not supported.'
);
result.parent = this.toQueryPath(path.popLast());
result.structuredQuery!.from = [{ collectionId: path.lastSegment() }];
}
const where = this.toFilter(query.filters);
if (where) {
result.structuredQuery!.where = where;
}
const orderBy = this.toOrder(query.orderBy);
Eif (orderBy) {
result.structuredQuery!.orderBy = orderBy;
}
const limit = this.toInt32Value(query.limit);
if (limit !== undefined) {
result.structuredQuery!.limit = limit;
}
if (query.startAt) {
result.structuredQuery!.startAt = this.toCursor(query.startAt);
}
if (query.endAt) {
result.structuredQuery!.endAt = this.toCursor(query.endAt);
}
return result;
}
fromQueryTarget(target: api.QueryTarget): Query {
let path = this.fromQueryPath(target.parent!);
const query = target.structuredQuery!;
const fromCount = query.from ? query.from.length : 0;
Eif (fromCount > 0) {
assert(
fromCount === 1,
'StructuredQuery.from with more than one collection is not supported.'
);
const from = query.from![0];
path = path.child(from.collectionId!);
}
let filterBy: Filter[] = [];
if (query.where) {
filterBy = this.fromFilter(query.where);
}
let orderBy: OrderBy[] = [];
Eif (query.orderBy) {
orderBy = this.fromOrder(query.orderBy);
}
let limit: number | null = null;
if (query.limit) {
limit = this.fromInt32Value(query.limit);
}
let startAt: Bound | null = null;
if (query.startAt) {
startAt = this.fromCursor(query.startAt);
}
let endAt: Bound | null = null;
if (query.endAt) {
endAt = this.fromCursor(query.endAt);
}
return new Query(path, orderBy, filterBy, limit, startAt, endAt);
}
toListenRequestLabels(
queryData: QueryData
): ApiClientObjectMap<string> | null {
const value = this.toLabel(queryData.purpose);
if (value == null) {
return null;
} else {
return {
'goog-listen-tags': value
};
}
}
private toLabel(purpose: QueryPurpose): string | null {
switch (purpose) {
case QueryPurpose.Listen:
return null;
case QueryPurpose.ExistenceFilterMismatch:
return 'existence-filter-mismatch';
case QueryPurpose.LimboResolution:
return 'limbo-document';
default:
return fail('Unrecognized query purpose: ' + purpose);
}
}
toTarget(queryData: QueryData): api.Target {
let result: api.Target;
const query = queryData.query;
if (query.isDocumentQuery()) {
result = { documents: this.toDocumentsTarget(query) };
} else {
result = { query: this.toQueryTarget(query) };
}
result.targetId = queryData.targetId;
if (queryData.resumeToken.length > 0) {
result.resumeToken = this.unsafeCastProtoByteString(
queryData.resumeToken
);
}
return result;
}
private toFilter(filters: Filter[]): api.Filter | undefined {
if (filters.length === 0) return;
const protos = filters.map(
filter =>
filter instanceof RelationFilter
? this.toRelationFilter(filter)
: this.toUnaryFilter(filter)
);
if (protos.length === 1) {
return protos[0];
}
return { compositeFilter: { op: 'AND', filters: protos } };
}
private fromFilter(filter: api.Filter | undefined): Filter[] {
Iif (!filter) {
return [];
} else if (filter.unaryFilter !== undefined) {
return [this.fromUnaryFilter(filter)];
} else if (filter.fieldFilter !== undefined) {
return [this.fromRelationFilter(filter)];
} else Eif (filter.compositeFilter !== undefined) {
return filter.compositeFilter.filters!
.map(f => this.fromFilter(f))
.reduce((accum, current) => accum.concat(current));
} else {
return fail('Unknown filter: ' + JSON.stringify(filter));
}
}
private toOrder(orderBys: OrderBy[]): api.Order[] | undefined {
Iif (orderBys.length === 0) return;
return orderBys.map(order => this.toPropertyOrder(order));
}
private fromOrder(orderBys: api.Order[]): OrderBy[] {
return orderBys.map(order => this.fromPropertyOrder(order));
}
private toCursor(cursor: Bound): api.Cursor {
return {
before: cursor.before,
values: cursor.position.map(component => this.toValue(component))
};
}
private fromCursor(cursor: api.Cursor): Bound {
const before = !!cursor.before;
const position = cursor.values!.map(component => this.fromValue(component));
return new Bound(position, before);
}
// visible for testing
toDirection(dir: Direction): api.OrderDirection {
return DIRECTIONS[dir.name];
}
// visible for testing
fromDirection(dir: api.OrderDirection | undefined): Direction | undefined {
switch (dir) {
case 'ASCENDING':
return Direction.ASCENDING;
case 'DESCENDING':
return Direction.DESCENDING;
default:
return undefined;
}
}
// visible for testing
toOperatorName(op: RelationOp): api.FieldFilterOp {
return OPERATORS[op.name];
}
fromOperatorName(op: api.FieldFilterOp): RelationOp {
switch (op) {
case 'EQUAL':
return RelationOp.EQUAL;
case 'GREATER_THAN':
return RelationOp.GREATER_THAN;
case 'GREATER_THAN_OR_EQUAL':
return RelationOp.GREATER_THAN_OR_EQUAL;
case 'LESS_THAN':
return RelationOp.LESS_THAN;
case 'LESS_THAN_OR_EQUAL':
return RelationOp.LESS_THAN_OR_EQUAL;
case 'OPERATOR_UNSPECIFIED':
return fail('Unspecified relation');
default:
return fail('Unknown relation');
}
}
toFieldPathReference(path: FieldPath): api.FieldReference {
return { fieldPath: path.canonicalString() };
}
fromFieldPathReference(fieldReference: api.FieldReference): FieldPath {
return FieldPath.fromServerFormat(fieldReference.fieldPath!);
}
// visible for testing
toPropertyOrder(orderBy: OrderBy): api.Order {
return {
field: this.toFieldPathReference(orderBy.field),
direction: this.toDirection(orderBy.dir)
};
}
fromPropertyOrder(orderBy: api.Order): OrderBy {
return new OrderBy(
this.fromFieldPathReference(orderBy.field!),
this.fromDirection(orderBy.direction)
);
}
// visible for testing
toRelationFilter(filter: Filter): api.Filter {
Eif (filter instanceof RelationFilter) {
return {
fieldFilter: {
field: this.toFieldPathReference(filter.field),
op: this.toOperatorName(filter.op),
value: this.toValue(filter.value)
}
};
} else {
return fail('Unrecognized filter: ' + JSON.stringify(filter));
}
}
fromRelationFilter(filter: api.Filter): Filter {
return new RelationFilter(
this.fromFieldPathReference(filter.fieldFilter!.field!),
this.fromOperatorName(filter.fieldFilter!.op!),
this.fromValue(filter.fieldFilter!.value!)
);
}
// visible for testing
toUnaryFilter(filter: Filter): api.Filter {
if (filter instanceof NanFilter) {
return {
unaryFilter: {
field: this.toFieldPathReference(filter.field),
op: 'IS_NAN'
}
};
} else Eif (filter instanceof NullFilter) {
return {
unaryFilter: {
field: this.toFieldPathReference(filter.field),
op: 'IS_NULL'
}
};
} else {
return fail('Unrecognized filter: ' + JSON.stringify(filter));
}
}
fromUnaryFilter(filter: api.Filter): Filter {
switch (filter.unaryFilter!.op!) {
case 'IS_NAN':
const nanField = this.fromFieldPathReference(
filter.unaryFilter!.field!
);
return new NanFilter(nanField);
case 'IS_NULL':
const nullField = this.fromFieldPathReference(
filter.unaryFilter!.field!
);
return new NullFilter(nullField);
case 'OPERATOR_UNSPECIFIED':
return fail('Unspecified filter');
default:
return fail('Unknown filter');
}
}
toDocumentMask(fieldMask: FieldMask): api.DocumentMask {
return {
fieldPaths: fieldMask.fields.map(field => field.canonicalString())
};
}
fromDocumentMask(proto: api.DocumentMask): FieldMask {
const paths = proto.fieldPaths || [];
const fields = paths.map(path => FieldPath.fromServerFormat(path));
return new FieldMask(fields);
}
}
/**
* Checks for a specific oneof tag in a protocol buffer message.
*
* This intentionally accommodates two distinct cases:
*
* 1) Messages containing a type tag: these are the format produced by GRPC in
* return values. These may contain default-value mappings for all tags in the
* oneof but the type tag specifies which one was actually set.
*
* 2) Messages that don't contain a type tag: these are the format required by
* GRPC as inputs. If we emitted objects with type tags, ProtoBuf.js would
* choke claiming that the tags aren't fields in the Message.
*
* Allowing both formats here makes the serializer able to consume the outputs
* it produces: for all messages it supports, fromX(toX(value)) == value.
*
* Note that case 2 suffers from ambiguity: if multiple tags are present
* without a type tag then the callers are structured in such a way that the
* first invocation will win. Since we only parse in this mode when parsing
* the output of a serialize method this works, but it's not a general
* solution.
*
* Unfortunately there is no general solution here because proto3 makes it
* impossible to distinguish unset from explicitly set fields: both have the
* default value for the type. Without the type tag but multiple value tags
* it's possible to have default values for each tag in the oneof and not be
* able to know which was actually in effect.
*/
function hasTag(obj: {}, type: string, tag: string): boolean {
return type === tag || (!type && tag in obj);
}
|