5 // Miguel de Icaza (miguel@ximian.com)
7 // (C) Ximian, Inc. http://www.ximian.com
8 // Copyright (C) 2004 Novell (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Globalization;
35 [CLSCompliant (false)]
36 public struct UInt16 : IComparable, IFormattable, IConvertible
38 public const ushort MaxValue = 0xffff;
39 public const ushort MinValue = 0;
41 internal ushort m_value;
43 public int CompareTo (object value)
48 if(!(value is System.UInt16))
49 throw new ArgumentException (Locale.GetText ("Value is not a System.UInt16."));
51 return this.m_value - ((ushort) value);
54 public override bool Equals (object obj)
56 if (!(obj is System.UInt16))
59 return ((ushort) obj) == m_value;
62 public override int GetHashCode ()
68 public static ushort Parse (string s)
73 bool digits_seen = false;
74 bool has_negative_sign = false;
77 throw new ArgumentNullException ("s");
82 for (i = 0; i < len; i++) {
84 if (!Char.IsWhiteSpace (c))
89 throw new FormatException ();
96 has_negative_sign = true;
99 for (; i < len; i++) {
102 if (c >= '0' && c <= '9') {
103 ushort d = (ushort) (c - '0');
105 val = checked ((ushort) (val * 10 + d));
109 if (Char.IsWhiteSpace (c)) {
110 for (i++; i < len; i++) {
111 if (!Char.IsWhiteSpace (s [i]))
112 throw new FormatException ();
117 throw new FormatException ();
121 throw new FormatException ();
123 // -0 is legal but other negative values are not
124 if (has_negative_sign && (val > 0)) {
125 throw new OverflowException (
126 Locale.GetText ("Negative number"));
132 [CLSCompliant (false)]
133 public static ushort Parse (string s, IFormatProvider provider)
135 return Parse (s, NumberStyles.Integer, provider);
138 [CLSCompliant (false)]
139 public static ushort Parse (string s, NumberStyles style)
141 return Parse (s, style, null);
144 [CLSCompliant (false)]
145 public static ushort Parse (string s, NumberStyles style, IFormatProvider provider)
147 uint tmpResult = UInt32.Parse (s, style, provider);
148 if (tmpResult > UInt16.MaxValue || tmpResult < UInt16.MinValue)
149 throw new OverflowException (Locale.GetText ("Value too large or too small."));
151 return (ushort) tmpResult;
154 public override string ToString ()
156 return ToString (null, null);
159 public string ToString (IFormatProvider provider)
161 return ToString (null, provider);
164 public string ToString (string format)
166 return ToString (format, null);
169 public string ToString (string format, IFormatProvider provider)
171 NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
173 // use "G" when format is null or String.Empty
174 if ((format == null) || (format.Length == 0))
177 return IntegerFormatter.NumberToString (format, nfi, m_value);
180 // =========== IConvertible Methods =========== //
181 public TypeCode GetTypeCode ()
183 return TypeCode.UInt16;
186 bool IConvertible.ToBoolean (IFormatProvider provider)
188 return System.Convert.ToBoolean (m_value);
191 byte IConvertible.ToByte (IFormatProvider provider)
193 return System.Convert.ToByte (m_value);
196 char IConvertible.ToChar (IFormatProvider provider)
198 return System.Convert.ToChar (m_value);
201 DateTime IConvertible.ToDateTime (IFormatProvider provider)
203 return System.Convert.ToDateTime (m_value);
206 decimal IConvertible.ToDecimal (IFormatProvider provider)
208 return System.Convert.ToDecimal (m_value);
211 double IConvertible.ToDouble (IFormatProvider provider)
213 return System.Convert.ToDouble (m_value);
216 short IConvertible.ToInt16 (IFormatProvider provider)
218 return System.Convert.ToInt16 (m_value);
221 int IConvertible.ToInt32 (IFormatProvider provider)
223 return System.Convert.ToInt32 (m_value);
226 long IConvertible.ToInt64 (IFormatProvider provider)
228 return System.Convert.ToInt64 (m_value);
231 sbyte IConvertible.ToSByte (IFormatProvider provider)
233 return System.Convert.ToSByte (m_value);
236 float IConvertible.ToSingle (IFormatProvider provider)
238 return System.Convert.ToSingle (m_value);
241 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
243 return System.Convert.ToType (m_value, conversionType, provider);
246 ushort IConvertible.ToUInt16 (IFormatProvider provider)
251 uint IConvertible.ToUInt32 (IFormatProvider provider)
253 return System.Convert.ToUInt32 (m_value);
256 ulong IConvertible.ToUInt64 (IFormatProvider provider)
258 return System.Convert.ToUInt64 (m_value);