-
Notifications
You must be signed in to change notification settings - Fork 1.2k
/
BsonDocumentWriter.cs
551 lines (490 loc) · 18.4 KB
/
BsonDocumentWriter.cs
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
/* Copyright 2010-present MongoDB 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.
*/
using System;
namespace MongoDB.Bson.IO
{
/// <summary>
/// Represents a BSON writer to a BsonDocument.
/// </summary>
public class BsonDocumentWriter : BsonWriter
{
// private fields
private BsonDocument _document;
private BsonDocumentWriterContext _context;
// constructors
/// <summary>
/// Initializes a new instance of the BsonDocumentWriter class.
/// </summary>
/// <param name="document">The document to write to (normally starts out as an empty document).</param>
public BsonDocumentWriter(BsonDocument document)
: this(document, BsonDocumentWriterSettings.Defaults)
{
}
/// <summary>
/// Initializes a new instance of the BsonDocumentWriter class.
/// </summary>
/// <param name="document">The document to write to (normally starts out as an empty document).</param>
/// <param name="settings">The settings.</param>
public BsonDocumentWriter(BsonDocument document, BsonDocumentWriterSettings settings)
: base(settings)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
_document = document;
_context = null;
State = BsonWriterState.Initial;
}
// public properties
/// <summary>
/// Gets the BsonDocument being written to.
/// </summary>
public BsonDocument Document
{
get { return _document; }
}
/// <inheritdoc />
public override long Position => 0L;
// public methods
/// <summary>
/// Closes the writer.
/// </summary>
public override void Close()
{
// Close can be called on Disposed objects
_context = null;
State = BsonWriterState.Closed;
}
/// <summary>
/// Flushes any pending data to the output destination.
/// </summary>
public override void Flush()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
}
/// <summary>
/// Writes BSON binary data to the writer.
/// </summary>
/// <param name="binaryData">The binary data.</param>
public override void WriteBinaryData(BsonBinaryData binaryData)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteBinaryData", BsonWriterState.Value);
}
WriteValue(binaryData);
State = GetNextState();
}
/// <summary>
/// Writes a BSON Boolean to the writer.
/// </summary>
/// <param name="value">The Boolean value.</param>
public override void WriteBoolean(bool value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteBoolean", BsonWriterState.Value);
}
WriteValue(value);
State = GetNextState();
}
/// <summary>
/// Writes BSON binary data to the writer.
/// </summary>
/// <param name="bytes">The bytes.</param>
public override void WriteBytes(byte[] bytes)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteBytes", BsonWriterState.Value);
}
WriteValue(new BsonBinaryData(bytes, BsonBinarySubType.Binary));
State = GetNextState();
}
/// <summary>
/// Writes a BSON DateTime to the writer.
/// </summary>
/// <param name="value">The number of milliseconds since the Unix epoch.</param>
public override void WriteDateTime(long value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteDateTime", BsonWriterState.Value);
}
WriteValue(new BsonDateTime(value));
State = GetNextState();
}
/// <inheritdoc />
public override void WriteDecimal128(Decimal128 value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState(nameof(WriteDecimal128), BsonWriterState.Value);
}
WriteValue(new BsonDecimal128(value));
State = GetNextState();
}
/// <summary>
/// Writes a BSON Double to the writer.
/// </summary>
/// <param name="value">The Double value.</param>
public override void WriteDouble(double value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteDouble", BsonWriterState.Value);
}
WriteValue(value);
State = GetNextState();
}
/// <summary>
/// Writes the end of a BSON array to the writer.
/// </summary>
public override void WriteEndArray()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteEndArray", BsonWriterState.Value);
}
if (_context.ContextType != ContextType.Array)
{
ThrowInvalidContextType("WriteEndArray", _context.ContextType, ContextType.Array);
}
base.WriteEndArray();
var array = _context.Array;
_context = _context.ParentContext;
WriteValue(array);
State = GetNextState();
}
/// <summary>
/// Writes the end of a BSON document to the writer.
/// </summary>
public override void WriteEndDocument()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Name)
{
ThrowInvalidState("WriteEndDocument", BsonWriterState.Name);
}
if (_context.ContextType != ContextType.Document && _context.ContextType != ContextType.ScopeDocument)
{
ThrowInvalidContextType("WriteEndDocument", _context.ContextType, ContextType.Document, ContextType.ScopeDocument);
}
base.WriteEndDocument();
if (_context.ContextType == ContextType.ScopeDocument)
{
var scope = _context.Document;
_context = _context.ParentContext;
var code = _context.Code;
_context = _context.ParentContext;
WriteValue(new BsonJavaScriptWithScope(code, scope));
}
else
{
var document = _context.Document;
_context = _context.ParentContext;
if (_context != null)
{
WriteValue(document);
}
}
if (_context == null)
{
State = BsonWriterState.Done;
}
else
{
State = GetNextState();
}
}
/// <summary>
/// Writes a BSON Int32 to the writer.
/// </summary>
/// <param name="value">The Int32 value.</param>
public override void WriteInt32(int value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteInt32", BsonWriterState.Value);
}
WriteValue(value);
State = GetNextState();
}
/// <summary>
/// Writes a BSON Int64 to the writer.
/// </summary>
/// <param name="value">The Int64 value.</param>
public override void WriteInt64(long value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteInt64", BsonWriterState.Value);
}
WriteValue(value);
State = GetNextState();
}
/// <summary>
/// Writes a BSON JavaScript to the writer.
/// </summary>
/// <param name="code">The JavaScript code.</param>
public override void WriteJavaScript(string code)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteJavaScript", BsonWriterState.Value);
}
WriteValue(new BsonJavaScript(code));
State = GetNextState();
}
/// <summary>
/// Writes a BSON JavaScript to the writer (call WriteStartDocument to start writing the scope).
/// </summary>
/// <param name="code">The JavaScript code.</param>
public override void WriteJavaScriptWithScope(string code)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteJavaScriptWithScope", BsonWriterState.Value);
}
_context = new BsonDocumentWriterContext(_context, ContextType.JavaScriptWithScope, code);
State = BsonWriterState.ScopeDocument;
}
/// <summary>
/// Writes a BSON MaxKey to the writer.
/// </summary>
public override void WriteMaxKey()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteMaxKey", BsonWriterState.Value);
}
WriteValue(BsonMaxKey.Value);
State = GetNextState();
}
/// <summary>
/// Writes a BSON MinKey to the writer.
/// </summary>
public override void WriteMinKey()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteMinKey", BsonWriterState.Value);
}
WriteValue(BsonMinKey.Value);
State = GetNextState();
}
/// <summary>
/// Writes the name of an element to the writer.
/// </summary>
/// <param name="name">The name of the element.</param>
public override void WriteName(string name)
{
base.WriteName(name);
_context.Name = name;
}
/// <summary>
/// Writes a BSON null to the writer.
/// </summary>
public override void WriteNull()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteNull", BsonWriterState.Value);
}
WriteValue(BsonNull.Value);
State = GetNextState();
}
/// <summary>
/// Writes a BSON ObjectId to the writer.
/// </summary>
/// <param name="objectId">The ObjectId.</param>
public override void WriteObjectId(ObjectId objectId)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteObjectId", BsonWriterState.Value);
}
WriteValue(objectId);
State = GetNextState();
}
/// <summary>
/// Writes a BSON regular expression to the writer.
/// </summary>
/// <param name="regex">A BsonRegularExpression.</param>
public override void WriteRegularExpression(BsonRegularExpression regex)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteRegularExpression", BsonWriterState.Value);
}
WriteValue(regex);
State = GetNextState();
}
/// <summary>
/// Writes the start of a BSON array to the writer.
/// </summary>
public override void WriteStartArray()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteStartArray", BsonWriterState.Value);
}
base.WriteStartArray();
_context = new BsonDocumentWriterContext(_context, ContextType.Array, new BsonArray());
State = BsonWriterState.Value;
}
/// <summary>
/// Writes the start of a BSON document to the writer.
/// </summary>
public override void WriteStartDocument()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Initial && State != BsonWriterState.Value && State != BsonWriterState.ScopeDocument && State != BsonWriterState.Done)
{
ThrowInvalidState("WriteStartDocument", BsonWriterState.Initial, BsonWriterState.Value, BsonWriterState.ScopeDocument, BsonWriterState.Done);
}
base.WriteStartDocument();
switch (State)
{
case BsonWriterState.Initial:
case BsonWriterState.Done:
_context = new BsonDocumentWriterContext(null, ContextType.Document, _document);
break;
case BsonWriterState.Value:
_context = new BsonDocumentWriterContext(_context, ContextType.Document, new BsonDocument());
break;
case BsonWriterState.ScopeDocument:
_context = new BsonDocumentWriterContext(_context, ContextType.ScopeDocument, new BsonDocument());
break;
default:
throw new BsonInternalException("Unexpected state.");
}
State = BsonWriterState.Name;
}
/// <summary>
/// Writes a BSON String to the writer.
/// </summary>
/// <param name="value">The String value.</param>
public override void WriteString(string value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteString", BsonWriterState.Value);
}
WriteValue(value);
State = GetNextState();
}
/// <summary>
/// Writes a BSON Symbol to the writer.
/// </summary>
/// <param name="value">The symbol.</param>
public override void WriteSymbol(string value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteSymbol", BsonWriterState.Value);
}
WriteValue(BsonSymbolTable.Lookup(value));
State = GetNextState();
}
/// <summary>
/// Writes a BSON timestamp to the writer.
/// </summary>
/// <param name="value">The combined timestamp/increment value.</param>
public override void WriteTimestamp(long value)
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteTimestamp", BsonWriterState.Value);
}
WriteValue(new BsonTimestamp(value));
State = GetNextState();
}
/// <summary>
/// Writes a BSON undefined to the writer.
/// </summary>
public override void WriteUndefined()
{
if (Disposed) { throw new ObjectDisposedException("BsonDocumentWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteUndefined", BsonWriterState.Value);
}
WriteValue(BsonUndefined.Value);
State = GetNextState();
}
// protected methods
/// <summary>
/// Disposes of any resources used by the writer.
/// </summary>
/// <param name="disposing">True if called from Dispose.</param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
try
{
Close();
}
catch { } // ignore exceptions
}
base.Dispose(disposing);
}
// private methods
private BsonWriterState GetNextState()
{
if (_context.ContextType == ContextType.Array)
{
return BsonWriterState.Value;
}
else
{
return BsonWriterState.Name;
}
}
private void WriteValue(BsonValue value)
{
if (_context.ContextType == ContextType.Array)
{
_context.Array.Add(value);
}
else
{
_context.Document.Add(_context.Name, value);
}
}
}
}