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
|
// 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: This class will encapsulate a byte and provide an
** Object representation of it.
**
**
===========================================================*/
namespace System {
using System;
using System.Globalization;
using System.Runtime.InteropServices;
using System.Diagnostics.Contracts;
// The Byte class extends the Value class and
// provides object representation of the byte primitive type.
//
[System.Runtime.InteropServices.ComVisible(true)]
[Serializable]
[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
public struct Byte : IComparable, IFormattable, IConvertible
, IComparable<Byte>, IEquatable<Byte>
{
private byte m_value;
// The maximum value that a Byte may represent: 255.
public const byte MaxValue = (byte)0xFF;
// The minimum value that a Byte may represent: 0.
public const byte MinValue = 0;
// Compares this object to another object, returning an integer that
// indicates the relationship.
// Returns a value less than zero if this object
// null is considered to be less than any instance.
// If object is not of type byte, this method throws an ArgumentException.
//
public int CompareTo(Object value) {
if (value == null) {
return 1;
}
if (!(value is Byte)) {
throw new ArgumentException(Environment.GetResourceString("Arg_MustBeByte"));
}
return m_value - (((Byte)value).m_value);
}
public int CompareTo(Byte value) {
return m_value - value;
}
// Determines whether two Byte objects are equal.
public override bool Equals(Object obj) {
if (!(obj is Byte)) {
return false;
}
return m_value == ((Byte)obj).m_value;
}
[System.Runtime.Versioning.NonVersionable]
public bool Equals(Byte obj)
{
return m_value == obj;
}
// Gets a hash code for this instance.
public override int GetHashCode() {
return m_value;
}
[Pure]
public static byte Parse(String s) {
return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
}
[Pure]
public static byte Parse(String s, NumberStyles style) {
NumberFormatInfo.ValidateParseStyleInteger(style);
return Parse(s, style, NumberFormatInfo.CurrentInfo);
}
[Pure]
public static byte Parse(String s, IFormatProvider provider) {
return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
}
// Parses an unsigned byte from a String in the given style. If
// a NumberFormatInfo isn't specified, the current culture's
// NumberFormatInfo is assumed.
[Pure]
public static byte Parse(String s, NumberStyles style, IFormatProvider provider) {
NumberFormatInfo.ValidateParseStyleInteger(style);
return Parse(s, style, NumberFormatInfo.GetInstance(provider));
}
private static byte Parse(String s, NumberStyles style, NumberFormatInfo info) {
int i = 0;
try {
i = Number.ParseInt32(s, style, info);
}
catch(OverflowException e) {
throw new OverflowException(Environment.GetResourceString("Overflow_Byte"), e);
}
if (i < MinValue || i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_Byte"));
return (byte)i;
}
public static bool TryParse(String s, out Byte result) {
return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
}
public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Byte result) {
NumberFormatInfo.ValidateParseStyleInteger(style);
return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result);
}
private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out Byte result) {
result = 0;
int i;
if (!Number.TryParseInt32(s, style, info, out i)) {
return false;
}
if (i < MinValue || i > MaxValue) {
return false;
}
result = (byte) i;
return true;
}
[Pure]
public override String ToString() {
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
}
[Pure]
public String ToString(String format) {
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, format, NumberFormatInfo.CurrentInfo);
}
[Pure]
public String ToString(IFormatProvider provider) {
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
}
[Pure]
public String ToString(String format, IFormatProvider provider) {
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider));
}
//
// IConvertible implementation
//
[Pure]
public TypeCode GetTypeCode() {
return TypeCode.Byte;
}
/// <internalonly/>
bool IConvertible.ToBoolean(IFormatProvider provider) {
return Convert.ToBoolean(m_value);
}
/// <internalonly/>
char IConvertible.ToChar(IFormatProvider provider) {
return Convert.ToChar(m_value);
}
/// <internalonly/>
sbyte IConvertible.ToSByte(IFormatProvider provider) {
return Convert.ToSByte(m_value);
}
/// <internalonly/>
byte IConvertible.ToByte(IFormatProvider provider) {
return m_value;
}
/// <internalonly/>
short IConvertible.ToInt16(IFormatProvider provider) {
return Convert.ToInt16(m_value);
}
/// <internalonly/>
ushort IConvertible.ToUInt16(IFormatProvider provider) {
return Convert.ToUInt16(m_value);
}
/// <internalonly/>
int IConvertible.ToInt32(IFormatProvider provider) {
return Convert.ToInt32(m_value);
}
/// <internalonly/>
uint IConvertible.ToUInt32(IFormatProvider provider) {
return Convert.ToUInt32(m_value);
}
/// <internalonly/>
long IConvertible.ToInt64(IFormatProvider provider) {
return Convert.ToInt64(m_value);
}
/// <internalonly/>
ulong IConvertible.ToUInt64(IFormatProvider provider) {
return Convert.ToUInt64(m_value);
}
/// <internalonly/>
float IConvertible.ToSingle(IFormatProvider provider) {
return Convert.ToSingle(m_value);
}
/// <internalonly/>
double IConvertible.ToDouble(IFormatProvider provider) {
return Convert.ToDouble(m_value);
}
/// <internalonly/>
Decimal IConvertible.ToDecimal(IFormatProvider provider) {
return Convert.ToDecimal(m_value);
}
/// <internalonly/>
DateTime IConvertible.ToDateTime(IFormatProvider provider) {
throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "Byte", "DateTime"));
}
/// <internalonly/>
Object IConvertible.ToType(Type type, IFormatProvider provider) {
return Convert.DefaultToType((IConvertible)this, type, provider);
}
}
}
|
