blob: 9841bdb4bb5c25e04b3d9dfe447a93511b6c2c0d (
plain)
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
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*============================================================
**
**
**
**
**
** Purpose: List for exceptions.
**
**
===========================================================*/
using System.Diagnostics.Contracts;
namespace System.Collections
{
/// This is a simple implementation of IDictionary that is empty and readonly.
internal sealed class EmptyReadOnlyDictionaryInternal : IDictionary
{
// Note that this class must be agile with respect to AppDomains. See its usage in
// System.Exception to understand why this is the case.
public EmptyReadOnlyDictionaryInternal()
{
}
// IEnumerable members
IEnumerator IEnumerable.GetEnumerator()
{
return new NodeEnumerator();
}
// ICollection members
public void CopyTo(Array array, int index)
{
if (array == null)
throw new ArgumentNullException(nameof(array));
if (array.Rank != 1)
throw new ArgumentException(SR.Arg_RankMultiDimNotSupported);
if (index < 0)
throw new ArgumentOutOfRangeException(nameof(index), SR.ArgumentOutOfRange_NeedNonNegNum);
if (array.Length - index < this.Count)
throw new ArgumentException(SR.ArgumentOutOfRange_Index, nameof(index));
Contract.EndContractBlock();
// the actual copy is a NOP
}
public int Count
{
get
{
return 0;
}
}
public Object SyncRoot
{
get
{
return this;
}
}
public bool IsSynchronized
{
get
{
return false;
}
}
// IDictionary members
public Object this[Object key]
{
get
{
if (key == null)
{
throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
return null;
}
set
{
if (key == null)
{
throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
if (!key.GetType().IsSerializable)
throw new ArgumentException(SR.Argument_NotSerializable, nameof(key));
if ((value != null) && (!value.GetType().IsSerializable))
throw new ArgumentException(SR.Argument_NotSerializable, nameof(value));
Contract.EndContractBlock();
throw new InvalidOperationException(SR.InvalidOperation_ReadOnly);
}
}
public ICollection Keys
{
get
{
return Array.Empty<Object>();
}
}
public ICollection Values
{
get
{
return Array.Empty<Object>();
}
}
public bool Contains(Object key)
{
return false;
}
public void Add(Object key, Object value)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
if (!key.GetType().IsSerializable)
throw new ArgumentException(SR.Argument_NotSerializable, nameof(key));
if ((value != null) && (!value.GetType().IsSerializable))
throw new ArgumentException(SR.Argument_NotSerializable, nameof(value));
Contract.EndContractBlock();
throw new InvalidOperationException(SR.InvalidOperation_ReadOnly);
}
public void Clear()
{
throw new InvalidOperationException(SR.InvalidOperation_ReadOnly);
}
public bool IsReadOnly
{
get
{
return true;
}
}
public bool IsFixedSize
{
get
{
return true;
}
}
public IDictionaryEnumerator GetEnumerator()
{
return new NodeEnumerator();
}
public void Remove(Object key)
{
throw new InvalidOperationException(SR.InvalidOperation_ReadOnly);
}
private sealed class NodeEnumerator : IDictionaryEnumerator
{
public NodeEnumerator()
{
}
// IEnumerator members
public bool MoveNext()
{
return false;
}
public Object Current
{
get
{
throw new InvalidOperationException(SR.InvalidOperation_EnumOpCantHappen);
}
}
public void Reset()
{
}
// IDictionaryEnumerator members
public Object Key
{
get
{
throw new InvalidOperationException(SR.InvalidOperation_EnumOpCantHappen);
}
}
public Object Value
{
get
{
throw new InvalidOperationException(SR.InvalidOperation_EnumOpCantHappen);
}
}
public DictionaryEntry Entry
{
get
{
throw new InvalidOperationException(SR.InvalidOperation_EnumOpCantHappen);
}
}
}
}
}
|
