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
|
#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Globalization;
using System.Text;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers
{
// This part of CodedOutputStream provides all the static entry points that are used
// by generated code and internally to compute the size of messages prior to being
// written to an instance of CodedOutputStream.
public sealed partial class CodedOutputStream
{
private const int LittleEndian64Size = 8;
private const int LittleEndian32Size = 4;
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// double field, including the tag.
/// </summary>
public static int ComputeDoubleSize(int fieldNumber, double value)
{
return ComputeTagSize(fieldNumber) + LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// float field, including the tag.
/// </summary>
public static int ComputeFloatSize(int fieldNumber, float value)
{
return ComputeTagSize(fieldNumber) + LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// uint64 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeUInt64Size(int fieldNumber, ulong value)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint64Size(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// int64 field, including the tag.
/// </summary>
public static int ComputeInt64Size(int fieldNumber, long value)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint64Size((ulong) value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// int32 field, including the tag.
/// </summary>
public static int ComputeInt32Size(int fieldNumber, int value)
{
if (value >= 0)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint32Size((uint) value);
}
else
{
// Must sign-extend.
return ComputeTagSize(fieldNumber) + 10;
}
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// fixed64 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeFixed64Size(int fieldNumber, ulong value)
{
return ComputeTagSize(fieldNumber) + LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// fixed32 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeFixed32Size(int fieldNumber, uint value)
{
return ComputeTagSize(fieldNumber) + LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// bool field, including the tag.
/// </summary>
public static int ComputeBoolSize(int fieldNumber, bool value)
{
return ComputeTagSize(fieldNumber) + 1;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// string field, including the tag.
/// </summary>
public static int ComputeStringSize(int fieldNumber, String value)
{
int byteArraySize = Encoding.UTF8.GetByteCount(value);
return ComputeTagSize(fieldNumber) +
ComputeRawVarint32Size((uint) byteArraySize) +
byteArraySize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// group field, including the tag.
/// </summary>
public static int ComputeGroupSize(int fieldNumber, IMessageLite value)
{
return ComputeTagSize(fieldNumber)*2 + value.SerializedSize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// group field represented by an UnknownFieldSet, including the tag.
/// </summary>
[Obsolete]
public static int ComputeUnknownGroupSize(int fieldNumber,
IMessageLite value)
{
return ComputeTagSize(fieldNumber)*2 + value.SerializedSize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// embedded message field, including the tag.
/// </summary>
public static int ComputeMessageSize(int fieldNumber, IMessageLite value)
{
int size = value.SerializedSize;
return ComputeTagSize(fieldNumber) + ComputeRawVarint32Size((uint) size) + size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// bytes field, including the tag.
/// </summary>
public static int ComputeBytesSize(int fieldNumber, ByteString value)
{
return ComputeTagSize(fieldNumber) +
ComputeRawVarint32Size((uint) value.Length) +
value.Length;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// uint32 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeUInt32Size(int fieldNumber, uint value)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint32Size(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// enum field, including the tag. The caller is responsible for
/// converting the enum value to its numeric value.
/// </summary>
public static int ComputeEnumSize(int fieldNumber, int value)
{
return ComputeTagSize(fieldNumber) + ComputeEnumSizeNoTag(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sfixed32 field, including the tag.
/// </summary>
public static int ComputeSFixed32Size(int fieldNumber, int value)
{
return ComputeTagSize(fieldNumber) + LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sfixed64 field, including the tag.
/// </summary>
public static int ComputeSFixed64Size(int fieldNumber, long value)
{
return ComputeTagSize(fieldNumber) + LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sint32 field, including the tag.
/// </summary>
public static int ComputeSInt32Size(int fieldNumber, int value)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint32Size(EncodeZigZag32(value));
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sint64 field, including the tag.
/// </summary>
public static int ComputeSInt64Size(int fieldNumber, long value)
{
return ComputeTagSize(fieldNumber) + ComputeRawVarint64Size(EncodeZigZag64(value));
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// double field, including the tag.
/// </summary>
public static int ComputeDoubleSizeNoTag(double value)
{
return LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// float field, including the tag.
/// </summary>
public static int ComputeFloatSizeNoTag(float value)
{
return LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// uint64 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeUInt64SizeNoTag(ulong value)
{
return ComputeRawVarint64Size(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// int64 field, including the tag.
/// </summary>
public static int ComputeInt64SizeNoTag(long value)
{
return ComputeRawVarint64Size((ulong) value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// int32 field, including the tag.
/// </summary>
public static int ComputeInt32SizeNoTag(int value)
{
if (value >= 0)
{
return ComputeRawVarint32Size((uint) value);
}
else
{
// Must sign-extend.
return 10;
}
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// fixed64 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeFixed64SizeNoTag(ulong value)
{
return LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// fixed32 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeFixed32SizeNoTag(uint value)
{
return LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// bool field, including the tag.
/// </summary>
public static int ComputeBoolSizeNoTag(bool value)
{
return 1;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// string field, including the tag.
/// </summary>
public static int ComputeStringSizeNoTag(String value)
{
int byteArraySize = Encoding.UTF8.GetByteCount(value);
return ComputeRawVarint32Size((uint) byteArraySize) +
byteArraySize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// group field, including the tag.
/// </summary>
public static int ComputeGroupSizeNoTag(IMessageLite value)
{
return value.SerializedSize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// group field represented by an UnknownFieldSet, including the tag.
/// </summary>
[Obsolete]
public static int ComputeUnknownGroupSizeNoTag(IMessageLite value)
{
return value.SerializedSize;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// embedded message field, including the tag.
/// </summary>
public static int ComputeMessageSizeNoTag(IMessageLite value)
{
int size = value.SerializedSize;
return ComputeRawVarint32Size((uint) size) + size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// bytes field, including the tag.
/// </summary>
public static int ComputeBytesSizeNoTag(ByteString value)
{
return ComputeRawVarint32Size((uint) value.Length) +
value.Length;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// uint32 field, including the tag.
/// </summary>
[CLSCompliant(false)]
public static int ComputeUInt32SizeNoTag(uint value)
{
return ComputeRawVarint32Size(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// enum field, including the tag. The caller is responsible for
/// converting the enum value to its numeric value.
/// </summary>
public static int ComputeEnumSizeNoTag(int value)
{
return ComputeInt32SizeNoTag(value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sfixed32 field, including the tag.
/// </summary>
public static int ComputeSFixed32SizeNoTag(int value)
{
return LittleEndian32Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sfixed64 field, including the tag.
/// </summary>
public static int ComputeSFixed64SizeNoTag(long value)
{
return LittleEndian64Size;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sint32 field, including the tag.
/// </summary>
public static int ComputeSInt32SizeNoTag(int value)
{
return ComputeRawVarint32Size(EncodeZigZag32(value));
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// sint64 field, including the tag.
/// </summary>
public static int ComputeSInt64SizeNoTag(long value)
{
return ComputeRawVarint64Size(EncodeZigZag64(value));
}
/*
* Compute the number of bytes that would be needed to encode a
* MessageSet extension to the stream. For historical reasons,
* the wire format differs from normal fields.
*/
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// MessageSet extension to the stream. For historical reasons,
/// the wire format differs from normal fields.
/// </summary>
public static int ComputeMessageSetExtensionSize(int fieldNumber, IMessageLite value)
{
return ComputeTagSize(WireFormat.MessageSetField.Item)*2 +
ComputeUInt32Size(WireFormat.MessageSetField.TypeID, (uint) fieldNumber) +
ComputeMessageSize(WireFormat.MessageSetField.Message, value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode an
/// unparsed MessageSet extension field to the stream. For
/// historical reasons, the wire format differs from normal fields.
/// </summary>
public static int ComputeRawMessageSetExtensionSize(int fieldNumber, ByteString value)
{
return ComputeTagSize(WireFormat.MessageSetField.Item)*2 +
ComputeUInt32Size(WireFormat.MessageSetField.TypeID, (uint) fieldNumber) +
ComputeBytesSize(WireFormat.MessageSetField.Message, value);
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a varint.
/// </summary>
[CLSCompliant(false)]
public static int ComputeRawVarint32Size(uint value)
{
if ((value & (0xffffffff << 7)) == 0)
{
return 1;
}
if ((value & (0xffffffff << 14)) == 0)
{
return 2;
}
if ((value & (0xffffffff << 21)) == 0)
{
return 3;
}
if ((value & (0xffffffff << 28)) == 0)
{
return 4;
}
return 5;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a varint.
/// </summary>
[CLSCompliant(false)]
public static int ComputeRawVarint64Size(ulong value)
{
if ((value & (0xffffffffffffffffL << 7)) == 0)
{
return 1;
}
if ((value & (0xffffffffffffffffL << 14)) == 0)
{
return 2;
}
if ((value & (0xffffffffffffffffL << 21)) == 0)
{
return 3;
}
if ((value & (0xffffffffffffffffL << 28)) == 0)
{
return 4;
}
if ((value & (0xffffffffffffffffL << 35)) == 0)
{
return 5;
}
if ((value & (0xffffffffffffffffL << 42)) == 0)
{
return 6;
}
if ((value & (0xffffffffffffffffL << 49)) == 0)
{
return 7;
}
if ((value & (0xffffffffffffffffL << 56)) == 0)
{
return 8;
}
if ((value & (0xffffffffffffffffL << 63)) == 0)
{
return 9;
}
return 10;
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// field of arbitrary type, including the tag, to the stream.
/// </summary>
public static int ComputeFieldSize(FieldType fieldType, int fieldNumber, Object value)
{
switch (fieldType)
{
case FieldType.Double:
return ComputeDoubleSize(fieldNumber, (double) value);
case FieldType.Float:
return ComputeFloatSize(fieldNumber, (float) value);
case FieldType.Int64:
return ComputeInt64Size(fieldNumber, (long) value);
case FieldType.UInt64:
return ComputeUInt64Size(fieldNumber, (ulong) value);
case FieldType.Int32:
return ComputeInt32Size(fieldNumber, (int) value);
case FieldType.Fixed64:
return ComputeFixed64Size(fieldNumber, (ulong) value);
case FieldType.Fixed32:
return ComputeFixed32Size(fieldNumber, (uint) value);
case FieldType.Bool:
return ComputeBoolSize(fieldNumber, (bool) value);
case FieldType.String:
return ComputeStringSize(fieldNumber, (string) value);
case FieldType.Group:
return ComputeGroupSize(fieldNumber, (IMessageLite) value);
case FieldType.Message:
return ComputeMessageSize(fieldNumber, (IMessageLite) value);
case FieldType.Bytes:
return ComputeBytesSize(fieldNumber, (ByteString) value);
case FieldType.UInt32:
return ComputeUInt32Size(fieldNumber, (uint) value);
case FieldType.SFixed32:
return ComputeSFixed32Size(fieldNumber, (int) value);
case FieldType.SFixed64:
return ComputeSFixed64Size(fieldNumber, (long) value);
case FieldType.SInt32:
return ComputeSInt32Size(fieldNumber, (int) value);
case FieldType.SInt64:
return ComputeSInt64Size(fieldNumber, (long) value);
case FieldType.Enum:
if (value is Enum)
{
return ComputeEnumSize(fieldNumber, ((IConvertible)value).ToInt32(FrameworkPortability.InvariantCulture));
}
else
{
return ComputeEnumSize(fieldNumber, ((IEnumLite) value).Number);
}
default:
throw new ArgumentOutOfRangeException("Invalid field type " + fieldType);
}
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a
/// field of arbitrary type, excluding the tag, to the stream.
/// </summary>
public static int ComputeFieldSizeNoTag(FieldType fieldType, Object value)
{
switch (fieldType)
{
case FieldType.Double:
return ComputeDoubleSizeNoTag((double) value);
case FieldType.Float:
return ComputeFloatSizeNoTag((float) value);
case FieldType.Int64:
return ComputeInt64SizeNoTag((long) value);
case FieldType.UInt64:
return ComputeUInt64SizeNoTag((ulong) value);
case FieldType.Int32:
return ComputeInt32SizeNoTag((int) value);
case FieldType.Fixed64:
return ComputeFixed64SizeNoTag((ulong) value);
case FieldType.Fixed32:
return ComputeFixed32SizeNoTag((uint) value);
case FieldType.Bool:
return ComputeBoolSizeNoTag((bool) value);
case FieldType.String:
return ComputeStringSizeNoTag((string) value);
case FieldType.Group:
return ComputeGroupSizeNoTag((IMessageLite) value);
case FieldType.Message:
return ComputeMessageSizeNoTag((IMessageLite) value);
case FieldType.Bytes:
return ComputeBytesSizeNoTag((ByteString) value);
case FieldType.UInt32:
return ComputeUInt32SizeNoTag((uint) value);
case FieldType.SFixed32:
return ComputeSFixed32SizeNoTag((int) value);
case FieldType.SFixed64:
return ComputeSFixed64SizeNoTag((long) value);
case FieldType.SInt32:
return ComputeSInt32SizeNoTag((int) value);
case FieldType.SInt64:
return ComputeSInt64SizeNoTag((long) value);
case FieldType.Enum:
if (value is Enum)
{
return ComputeEnumSizeNoTag(((IConvertible)value).ToInt32(FrameworkPortability.InvariantCulture));
}
else
{
return ComputeEnumSizeNoTag(((IEnumLite) value).Number);
}
default:
throw new ArgumentOutOfRangeException("Invalid field type " + fieldType);
}
}
/// <summary>
/// Compute the number of bytes that would be needed to encode a tag.
/// </summary>
public static int ComputeTagSize(int fieldNumber)
{
return ComputeRawVarint32Size(WireFormat.MakeTag(fieldNumber, 0));
}
}
}
|