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Viewing changes to contrib/ICSharpCode.NRefactory.CSharp/Parser/mcs/MonoSymbolFile.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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contrib/ICSharpCode.NRefactory.CSharp/Parser/mcs/MonoSymbolFile.cs
1
 
//
2
 
// MonoSymbolFile.cs
3
 
//
4
 
// Authors:
5
 
//   Martin Baulig (martin@ximian.com)
6
 
//   Marek Safar (marek.safar@gmail.com)
7
 
//
8
 
// (C) 2003 Ximian, Inc.  http://www.ximian.com
9
 
// Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
10
 
//
11
 
//
12
 
// Permission is hereby granted, free of charge, to any person obtaining
13
 
// a copy of this software and associated documentation files (the
14
 
// "Software"), to deal in the Software without restriction, including
15
 
// without limitation the rights to use, copy, modify, merge, publish,
16
 
// distribute, sublicense, and/or sell copies of the Software, and to
17
 
// permit persons to whom the Software is furnished to do so, subject to
18
 
// the following conditions:
19
 
// 
20
 
// The above copyright notice and this permission notice shall be
21
 
// included in all copies or substantial portions of the Software.
22
 
// 
23
 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24
 
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25
 
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26
 
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27
 
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28
 
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29
 
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30
 
//
31
 
 
32
 
using System;
33
 
using System.Reflection;
34
 
using System.Collections.Generic;
35
 
using System.IO;
36
 
        
37
 
namespace Mono.CompilerServices.SymbolWriter
38
 
{
39
 
        public class MonoSymbolFileException : Exception
40
 
        {
41
 
                public MonoSymbolFileException ()
42
 
                        : base ()
43
 
                { }
44
 
 
45
 
                public MonoSymbolFileException (string message, params object[] args)
46
 
                        : base (String.Format (message, args))
47
 
                {
48
 
                }
49
 
 
50
 
                public MonoSymbolFileException (string message, Exception innerException)
51
 
                        : base (message, innerException)
52
 
                {
53
 
                }
54
 
        }
55
 
 
56
 
        internal class MyBinaryWriter : BinaryWriter
57
 
        {
58
 
                public MyBinaryWriter (Stream stream)
59
 
                        : base (stream)
60
 
                { }
61
 
 
62
 
                public void WriteLeb128 (int value)
63
 
                {
64
 
                        base.Write7BitEncodedInt (value);
65
 
                }
66
 
        }
67
 
 
68
 
        internal class MyBinaryReader : BinaryReader
69
 
        {
70
 
                public MyBinaryReader (Stream stream)
71
 
                        : base (stream)
72
 
                { }
73
 
 
74
 
                public int ReadLeb128 ()
75
 
                {
76
 
                        return base.Read7BitEncodedInt ();
77
 
                }
78
 
 
79
 
                public string ReadString (int offset)
80
 
                {
81
 
                        long old_pos = BaseStream.Position;
82
 
                        BaseStream.Position = offset;
83
 
 
84
 
                        string text = ReadString ();
85
 
 
86
 
                        BaseStream.Position = old_pos;
87
 
                        return text;
88
 
                }
89
 
        }
90
 
 
91
 
        public interface ISourceFile
92
 
        {
93
 
                SourceFileEntry Entry {
94
 
                        get;
95
 
                }
96
 
        }
97
 
 
98
 
        public interface ICompileUnit
99
 
        {
100
 
                CompileUnitEntry Entry {
101
 
                        get;
102
 
                }
103
 
        }
104
 
 
105
 
        public interface IMethodDef
106
 
        {
107
 
                string Name {
108
 
                        get;
109
 
                }
110
 
 
111
 
                int Token {
112
 
                        get;
113
 
                }
114
 
        }
115
 
 
116
 
        public class MonoSymbolFile : IDisposable
117
 
        {
118
 
                List<MethodEntry> methods = new List<MethodEntry> ();
119
 
                List<SourceFileEntry> sources = new List<SourceFileEntry> ();
120
 
                List<CompileUnitEntry> comp_units = new List<CompileUnitEntry> ();
121
 
                Dictionary<int, AnonymousScopeEntry> anonymous_scopes;
122
 
 
123
 
                OffsetTable ot;
124
 
                int last_type_index;
125
 
                int last_method_index;
126
 
                int last_namespace_index;
127
 
 
128
 
                public readonly int MajorVersion = OffsetTable.MajorVersion;
129
 
                public readonly int MinorVersion = OffsetTable.MinorVersion;
130
 
 
131
 
                public int NumLineNumbers;
132
 
 
133
 
                internal MonoSymbolFile ()
134
 
                {
135
 
                        ot = new OffsetTable ();
136
 
                }
137
 
 
138
 
                internal int AddSource (SourceFileEntry source)
139
 
                {
140
 
                        sources.Add (source);
141
 
                        return sources.Count;
142
 
                }
143
 
 
144
 
                internal int AddCompileUnit (CompileUnitEntry entry)
145
 
                {
146
 
                        comp_units.Add (entry);
147
 
                        return comp_units.Count;
148
 
                }
149
 
 
150
 
                internal void AddMethod (MethodEntry entry)
151
 
                {
152
 
                        methods.Add (entry);
153
 
                }
154
 
 
155
 
                public MethodEntry DefineMethod (CompileUnitEntry comp_unit, int token,
156
 
                                                 ScopeVariable[] scope_vars, LocalVariableEntry[] locals,
157
 
                                                 LineNumberEntry[] lines, CodeBlockEntry[] code_blocks,
158
 
                                                 string real_name, MethodEntry.Flags flags,
159
 
                                                 int namespace_id)
160
 
                {
161
 
                        if (reader != null)
162
 
                                throw new InvalidOperationException ();
163
 
 
164
 
                        MethodEntry method = new MethodEntry (
165
 
                                this, comp_unit, token, scope_vars, locals, lines, code_blocks, 
166
 
                                real_name, flags, namespace_id);
167
 
                        AddMethod (method);
168
 
                        return method;
169
 
                }
170
 
 
171
 
                internal void DefineAnonymousScope (int id)
172
 
                {
173
 
                        if (reader != null)
174
 
                                throw new InvalidOperationException ();
175
 
 
176
 
                        if (anonymous_scopes == null)
177
 
                                anonymous_scopes = new Dictionary<int, AnonymousScopeEntry>  ();
178
 
 
179
 
                        anonymous_scopes.Add (id, new AnonymousScopeEntry (id));
180
 
                }
181
 
 
182
 
                internal void DefineCapturedVariable (int scope_id, string name, string captured_name,
183
 
                                                      CapturedVariable.CapturedKind kind)
184
 
                {
185
 
                        if (reader != null)
186
 
                                throw new InvalidOperationException ();
187
 
 
188
 
                        AnonymousScopeEntry scope = anonymous_scopes [scope_id];
189
 
                        scope.AddCapturedVariable (name, captured_name, kind);
190
 
                }
191
 
 
192
 
                internal void DefineCapturedScope (int scope_id, int id, string captured_name)
193
 
                {
194
 
                        if (reader != null)
195
 
                                throw new InvalidOperationException ();
196
 
 
197
 
                        AnonymousScopeEntry scope = anonymous_scopes [scope_id];
198
 
                        scope.AddCapturedScope (id, captured_name);
199
 
                }
200
 
 
201
 
                internal int GetNextTypeIndex ()
202
 
                {
203
 
                        return ++last_type_index;
204
 
                }
205
 
 
206
 
                internal int GetNextMethodIndex ()
207
 
                {
208
 
                        return ++last_method_index;
209
 
                }
210
 
 
211
 
                internal int GetNextNamespaceIndex ()
212
 
                {
213
 
                        return ++last_namespace_index;
214
 
                }
215
 
                
216
 
                void Write (MyBinaryWriter bw, Guid guid)
217
 
                {
218
 
                        // Magic number and file version.
219
 
                        bw.Write (OffsetTable.Magic);
220
 
                        bw.Write (MajorVersion);
221
 
                        bw.Write (MinorVersion);
222
 
 
223
 
                        bw.Write (guid.ToByteArray ());
224
 
 
225
 
                        //
226
 
                        // Offsets of file sections; we must write this after we're done
227
 
                        // writing the whole file, so we just reserve the space for it here.
228
 
                        //
229
 
                        long offset_table_offset = bw.BaseStream.Position;
230
 
                        ot.Write (bw, MajorVersion, MinorVersion);
231
 
 
232
 
                        //
233
 
                        // Sort the methods according to their tokens and update their index.
234
 
                        //
235
 
                        methods.Sort ();
236
 
                        for (int i = 0; i < methods.Count; i++)
237
 
                                methods [i].Index = i + 1;
238
 
 
239
 
                        //
240
 
                        // Write data sections.
241
 
                        //
242
 
                        ot.DataSectionOffset = (int) bw.BaseStream.Position;
243
 
                        foreach (SourceFileEntry source in sources)
244
 
                                source.WriteData (bw);
245
 
                        foreach (CompileUnitEntry comp_unit in comp_units)
246
 
                                comp_unit.WriteData (bw);
247
 
                        foreach (MethodEntry method in methods)
248
 
                                method.WriteData (this, bw);
249
 
                        ot.DataSectionSize = (int) bw.BaseStream.Position - ot.DataSectionOffset;
250
 
 
251
 
                        //
252
 
                        // Write the method index table.
253
 
                        //
254
 
                        ot.MethodTableOffset = (int) bw.BaseStream.Position;
255
 
                        for (int i = 0; i < methods.Count; i++) {
256
 
                                MethodEntry entry = methods [i];
257
 
                                entry.Write (bw);
258
 
                        }
259
 
                        ot.MethodTableSize = (int) bw.BaseStream.Position - ot.MethodTableOffset;
260
 
 
261
 
                        //
262
 
                        // Write source table.
263
 
                        //
264
 
                        ot.SourceTableOffset = (int) bw.BaseStream.Position;
265
 
                        for (int i = 0; i < sources.Count; i++) {
266
 
                                SourceFileEntry source = sources [i];
267
 
                                source.Write (bw);
268
 
                        }
269
 
                        ot.SourceTableSize = (int) bw.BaseStream.Position - ot.SourceTableOffset;
270
 
 
271
 
                        //
272
 
                        // Write compilation unit table.
273
 
                        //
274
 
                        ot.CompileUnitTableOffset = (int) bw.BaseStream.Position;
275
 
                        for (int i = 0; i < comp_units.Count; i++) {
276
 
                                CompileUnitEntry unit = comp_units [i];
277
 
                                unit.Write (bw);
278
 
                        }
279
 
                        ot.CompileUnitTableSize = (int) bw.BaseStream.Position - ot.CompileUnitTableOffset;
280
 
 
281
 
                        //
282
 
                        // Write anonymous scope table.
283
 
                        //
284
 
                        ot.AnonymousScopeCount = anonymous_scopes != null ? anonymous_scopes.Count : 0;
285
 
                        ot.AnonymousScopeTableOffset = (int) bw.BaseStream.Position;
286
 
                        if (anonymous_scopes != null) {
287
 
                                foreach (AnonymousScopeEntry scope in anonymous_scopes.Values)
288
 
                                        scope.Write (bw);
289
 
                        }
290
 
                        ot.AnonymousScopeTableSize = (int) bw.BaseStream.Position - ot.AnonymousScopeTableOffset;
291
 
 
292
 
                        //
293
 
                        // Fixup offset table.
294
 
                        //
295
 
                        ot.TypeCount = last_type_index;
296
 
                        ot.MethodCount = methods.Count;
297
 
                        ot.SourceCount = sources.Count;
298
 
                        ot.CompileUnitCount = comp_units.Count;
299
 
 
300
 
                        //
301
 
                        // Write offset table.
302
 
                        //
303
 
                        ot.TotalFileSize = (int) bw.BaseStream.Position;
304
 
                        bw.Seek ((int) offset_table_offset, SeekOrigin.Begin);
305
 
                        ot.Write (bw, MajorVersion, MinorVersion);
306
 
                        bw.Seek (0, SeekOrigin.End);
307
 
 
308
 
#if false
309
 
                        Console.WriteLine ("TOTAL: {0} line numbes, {1} bytes, extended {2} bytes, " +
310
 
                                           "{3} methods.", NumLineNumbers, LineNumberSize,
311
 
                                           ExtendedLineNumberSize, methods.Count);
312
 
#endif
313
 
                }
314
 
 
315
 
                public void CreateSymbolFile (Guid guid, FileStream fs)
316
 
                {
317
 
                        if (reader != null)
318
 
                                throw new InvalidOperationException ();
319
 
 
320
 
                        Write (new MyBinaryWriter (fs), guid);
321
 
                }
322
 
 
323
 
                MyBinaryReader reader;
324
 
                Dictionary<int, SourceFileEntry> source_file_hash;
325
 
                Dictionary<int, CompileUnitEntry> compile_unit_hash;
326
 
 
327
 
                List<MethodEntry> method_list;
328
 
                Dictionary<int, MethodEntry> method_token_hash;
329
 
                Dictionary<string, int> source_name_hash;
330
 
 
331
 
                Guid guid;
332
 
 
333
 
                MonoSymbolFile (Stream stream)
334
 
                {
335
 
                        reader = new MyBinaryReader (stream);
336
 
 
337
 
                        try {
338
 
                                long magic = reader.ReadInt64 ();
339
 
                                int major_version = reader.ReadInt32 ();
340
 
                                int minor_version = reader.ReadInt32 ();
341
 
 
342
 
                                if (magic != OffsetTable.Magic)
343
 
                                        throw new MonoSymbolFileException ("Symbol file is not a valid");
344
 
                                if (major_version != OffsetTable.MajorVersion)
345
 
                                        throw new MonoSymbolFileException (
346
 
                                                "Symbol file has version {0} but expected {1}", major_version, OffsetTable.MajorVersion);
347
 
                                if (minor_version != OffsetTable.MinorVersion)
348
 
                                        throw new MonoSymbolFileException ("Symbol file has version {0}.{1} but expected {2}.{3}",
349
 
                                                major_version, minor_version,
350
 
                                                OffsetTable.MajorVersion, OffsetTable.MinorVersion);
351
 
 
352
 
                                MajorVersion = major_version;
353
 
                                MinorVersion = minor_version;
354
 
                                guid = new Guid (reader.ReadBytes (16));
355
 
 
356
 
                                ot = new OffsetTable (reader, major_version, minor_version);
357
 
                        } catch (Exception e) {
358
 
                                throw new MonoSymbolFileException ("Cannot read symbol file", e);
359
 
                        }
360
 
 
361
 
                        source_file_hash = new Dictionary<int, SourceFileEntry> ();
362
 
                        compile_unit_hash = new Dictionary<int, CompileUnitEntry> ();
363
 
                }
364
 
 
365
 
                public static MonoSymbolFile ReadSymbolFile (Assembly assembly)
366
 
                {
367
 
                        string filename = assembly.Location;
368
 
                        string name = filename + ".mdb";
369
 
 
370
 
                        Module[] modules = assembly.GetModules ();
371
 
                        Guid assembly_guid = modules[0].ModuleVersionId;
372
 
 
373
 
                        return ReadSymbolFile (name, assembly_guid);
374
 
                }
375
 
 
376
 
                public static MonoSymbolFile ReadSymbolFile (string mdbFilename)
377
 
                {
378
 
                        return ReadSymbolFile (new FileStream (mdbFilename, FileMode.Open, FileAccess.Read));
379
 
                }
380
 
 
381
 
                public static MonoSymbolFile ReadSymbolFile (string mdbFilename, Guid assemblyGuid)
382
 
                {
383
 
                        var sf = ReadSymbolFile (mdbFilename);
384
 
                        if (assemblyGuid != sf.guid)
385
 
                                throw new MonoSymbolFileException ("Symbol file `{0}' does not match assembly", mdbFilename);
386
 
 
387
 
                        return sf;
388
 
                }
389
 
 
390
 
                public static MonoSymbolFile ReadSymbolFile (Stream stream)
391
 
                {
392
 
                        return new MonoSymbolFile (stream);
393
 
                }
394
 
 
395
 
                public int CompileUnitCount {
396
 
                        get { return ot.CompileUnitCount; }
397
 
                }
398
 
 
399
 
                public int SourceCount {
400
 
                        get { return ot.SourceCount; }
401
 
                }
402
 
 
403
 
                public int MethodCount {
404
 
                        get { return ot.MethodCount; }
405
 
                }
406
 
 
407
 
                public int TypeCount {
408
 
                        get { return ot.TypeCount; }
409
 
                }
410
 
 
411
 
                public int AnonymousScopeCount {
412
 
                        get { return ot.AnonymousScopeCount; }
413
 
                }
414
 
 
415
 
                public int NamespaceCount {
416
 
                        get { return last_namespace_index; }
417
 
                }
418
 
 
419
 
                public Guid Guid {
420
 
                        get { return guid; }
421
 
                }
422
 
 
423
 
                public OffsetTable OffsetTable {
424
 
                        get { return ot; }
425
 
                }
426
 
 
427
 
                internal int LineNumberCount = 0;
428
 
                internal int LocalCount = 0;
429
 
                internal int StringSize = 0;
430
 
 
431
 
                internal int LineNumberSize = 0;
432
 
                internal int ExtendedLineNumberSize = 0;
433
 
 
434
 
                public SourceFileEntry GetSourceFile (int index)
435
 
                {
436
 
                        if ((index < 1) || (index > ot.SourceCount))
437
 
                                throw new ArgumentException ();
438
 
                        if (reader == null)
439
 
                                throw new InvalidOperationException ();
440
 
 
441
 
                        lock (this) {
442
 
                                SourceFileEntry source;
443
 
                                if (source_file_hash.TryGetValue (index, out source))
444
 
                                        return source;
445
 
 
446
 
                                long old_pos = reader.BaseStream.Position;
447
 
 
448
 
                                reader.BaseStream.Position = ot.SourceTableOffset +
449
 
                                        SourceFileEntry.Size * (index - 1);
450
 
                                source = new SourceFileEntry (this, reader);
451
 
                                source_file_hash.Add (index, source);
452
 
 
453
 
                                reader.BaseStream.Position = old_pos;
454
 
                                return source;
455
 
                        }
456
 
                }
457
 
 
458
 
                public SourceFileEntry[] Sources {
459
 
                        get {
460
 
                                if (reader == null)
461
 
                                        throw new InvalidOperationException ();
462
 
 
463
 
                                SourceFileEntry[] retval = new SourceFileEntry [SourceCount];
464
 
                                for (int i = 0; i < SourceCount; i++)
465
 
                                        retval [i] = GetSourceFile (i + 1);
466
 
                                return retval;
467
 
                        }
468
 
                }
469
 
 
470
 
                public CompileUnitEntry GetCompileUnit (int index)
471
 
                {
472
 
                        if ((index < 1) || (index > ot.CompileUnitCount))
473
 
                                throw new ArgumentException ();
474
 
                        if (reader == null)
475
 
                                throw new InvalidOperationException ();
476
 
 
477
 
                        lock (this) {
478
 
                                CompileUnitEntry unit;
479
 
                                if (compile_unit_hash.TryGetValue (index, out unit))
480
 
                                        return unit;
481
 
 
482
 
                                long old_pos = reader.BaseStream.Position;
483
 
 
484
 
                                reader.BaseStream.Position = ot.CompileUnitTableOffset +
485
 
                                        CompileUnitEntry.Size * (index - 1);
486
 
                                unit = new CompileUnitEntry (this, reader);
487
 
                                compile_unit_hash.Add (index, unit);
488
 
 
489
 
                                reader.BaseStream.Position = old_pos;
490
 
                                return unit;
491
 
                        }
492
 
                }
493
 
 
494
 
                public CompileUnitEntry[] CompileUnits {
495
 
                        get {
496
 
                                if (reader == null)
497
 
                                        throw new InvalidOperationException ();
498
 
 
499
 
                                CompileUnitEntry[] retval = new CompileUnitEntry [CompileUnitCount];
500
 
                                for (int i = 0; i < CompileUnitCount; i++)
501
 
                                        retval [i] = GetCompileUnit (i + 1);
502
 
                                return retval;
503
 
                        }
504
 
                }
505
 
 
506
 
                void read_methods ()
507
 
                {
508
 
                        lock (this) {
509
 
                                if (method_token_hash != null)
510
 
                                        return;
511
 
 
512
 
                                method_token_hash = new Dictionary<int, MethodEntry> ();
513
 
                                method_list = new List<MethodEntry> ();
514
 
 
515
 
                                long old_pos = reader.BaseStream.Position;
516
 
                                reader.BaseStream.Position = ot.MethodTableOffset;
517
 
 
518
 
                                for (int i = 0; i < MethodCount; i++) {
519
 
                                        MethodEntry entry = new MethodEntry (this, reader, i + 1);
520
 
                                        method_token_hash.Add (entry.Token, entry);
521
 
                                        method_list.Add (entry);
522
 
                                }
523
 
 
524
 
                                reader.BaseStream.Position = old_pos;
525
 
                        }
526
 
                }
527
 
 
528
 
                public MethodEntry GetMethodByToken (int token)
529
 
                {
530
 
                        if (reader == null)
531
 
                                throw new InvalidOperationException ();
532
 
 
533
 
                        lock (this) {
534
 
                                read_methods ();
535
 
                                MethodEntry me;
536
 
                                method_token_hash.TryGetValue (token, out me);
537
 
                                return me;
538
 
                        }
539
 
                }
540
 
 
541
 
                public MethodEntry GetMethod (int index)
542
 
                {
543
 
                        if ((index < 1) || (index > ot.MethodCount))
544
 
                                throw new ArgumentException ();
545
 
                        if (reader == null)
546
 
                                throw new InvalidOperationException ();
547
 
 
548
 
                        lock (this) {
549
 
                                read_methods ();
550
 
                                return method_list [index - 1];
551
 
                        }
552
 
                }
553
 
 
554
 
                public MethodEntry[] Methods {
555
 
                        get {
556
 
                                if (reader == null)
557
 
                                        throw new InvalidOperationException ();
558
 
 
559
 
                                lock (this) {
560
 
                                        read_methods ();
561
 
                                        MethodEntry[] retval = new MethodEntry [MethodCount];
562
 
                                        method_list.CopyTo (retval, 0);
563
 
                                        return retval;
564
 
                                }
565
 
                        }
566
 
                }
567
 
 
568
 
                public int FindSource (string file_name)
569
 
                {
570
 
                        if (reader == null)
571
 
                                throw new InvalidOperationException ();
572
 
 
573
 
                        lock (this) {
574
 
                                if (source_name_hash == null) {
575
 
                                        source_name_hash = new Dictionary<string, int> ();
576
 
 
577
 
                                        for (int i = 0; i < ot.SourceCount; i++) {
578
 
                                                SourceFileEntry source = GetSourceFile (i + 1);
579
 
                                                source_name_hash.Add (source.FileName, i);
580
 
                                        }
581
 
                                }
582
 
 
583
 
                                int value;
584
 
                                if (!source_name_hash.TryGetValue (file_name, out value))
585
 
                                        return -1;
586
 
                                return value;
587
 
                        }
588
 
                }
589
 
 
590
 
                public AnonymousScopeEntry GetAnonymousScope (int id)
591
 
                {
592
 
                        if (reader == null)
593
 
                                throw new InvalidOperationException ();
594
 
 
595
 
                        AnonymousScopeEntry scope;
596
 
                        lock (this) {
597
 
                                if (anonymous_scopes != null) {
598
 
                                        anonymous_scopes.TryGetValue (id, out scope);
599
 
                                        return scope;
600
 
                                }
601
 
 
602
 
                                anonymous_scopes = new Dictionary<int, AnonymousScopeEntry> ();
603
 
                                reader.BaseStream.Position = ot.AnonymousScopeTableOffset;
604
 
                                for (int i = 0; i < ot.AnonymousScopeCount; i++) {
605
 
                                        scope = new AnonymousScopeEntry (reader);
606
 
                                        anonymous_scopes.Add (scope.ID, scope);
607
 
                                }
608
 
 
609
 
                                return anonymous_scopes [id];
610
 
                        }
611
 
                }
612
 
 
613
 
                internal MyBinaryReader BinaryReader {
614
 
                        get {
615
 
                                if (reader == null)
616
 
                                        throw new InvalidOperationException ();
617
 
 
618
 
                                return reader;
619
 
                        }
620
 
                }
621
 
 
622
 
                public void Dispose ()
623
 
                {
624
 
                        Dispose (true);
625
 
                }
626
 
 
627
 
                protected virtual void Dispose (bool disposing)
628
 
                {
629
 
                        if (disposing) {
630
 
                                if (reader != null) {
631
 
                                        reader.Close ();
632
 
                                        reader = null;
633
 
                                }
634
 
                        }
635
 
                }
636
 
        }
637
 
}