Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / UInt16.cs / 1 / UInt16.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: UInt16 ** ** Purpose: This class will encapsulate a short and provide an ** Object representation of it. ** ** ===========================================================*/ namespace System { using System.Globalization; using System; using System.Runtime.InteropServices; // Wrapper for unsigned 16 bit integers. [Serializable, CLSCompliant(false), System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)] [System.Runtime.InteropServices.ComVisible(true)] public struct UInt16 : IComparable, IFormattable, IConvertible #if GENERICS_WORK , IComparable, IEquatable #endif { private ushort m_value; public const ushort MaxValue = (ushort)0xFFFF; public const ushort 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 UInt16, this method throws an ArgumentException. // public int CompareTo(Object value) { if (value == null) { return 1; } if (value is UInt16) { return ((int)m_value - (int)(((UInt16)value).m_value)); } throw new ArgumentException(Environment.GetResourceString("Arg_MustBeUInt16")); } public int CompareTo(UInt16 value) { return ((int)m_value - (int)value); } public override bool Equals(Object obj) { if (!(obj is UInt16)) { return false; } return m_value == ((UInt16)obj).m_value; } public bool Equals(UInt16 obj) { return m_value == obj; } // Returns a HashCode for the UInt16 public override int GetHashCode() { return (int)m_value; } // Converts the current value to a String in base-10 with no extra padding. public override String ToString() { return Number.FormatUInt32(m_value, null, NumberFormatInfo.CurrentInfo); } public String ToString(IFormatProvider provider) { return Number.FormatUInt32(m_value, null, NumberFormatInfo.GetInstance(provider)); } public String ToString(String format) { return Number.FormatUInt32(m_value, format, NumberFormatInfo.CurrentInfo); } public String ToString(String format, IFormatProvider provider) { return Number.FormatUInt32(m_value, format, NumberFormatInfo.GetInstance(provider)); } [CLSCompliant(false)] public static ushort Parse(String s) { return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo); } [CLSCompliant(false)] public static ushort Parse(String s, NumberStyles style) { NumberFormatInfo.ValidateParseStyleInteger(style); return Parse(s, style, NumberFormatInfo.CurrentInfo); } [CLSCompliant(false)] public static ushort Parse(String s, IFormatProvider provider) { return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider)); } [CLSCompliant(false)] public static ushort Parse(String s, NumberStyles style, IFormatProvider provider) { NumberFormatInfo.ValidateParseStyleInteger(style); return Parse(s, style, NumberFormatInfo.GetInstance(provider)); } private static ushort Parse(String s, NumberStyles style, NumberFormatInfo info) { uint i = 0; try { i = Number.ParseUInt32(s, style, info); } catch(OverflowException e) { throw new OverflowException(Environment.GetResourceString("Overflow_UInt16"), e); } if (i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_UInt16")); return (ushort)i; } [CLSCompliant(false)] public static bool TryParse(String s, out UInt16 result) { return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result); } [CLSCompliant(false)] public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out UInt16 result) { NumberFormatInfo.ValidateParseStyleInteger(style); return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result); } private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out UInt16 result) { result = 0; UInt32 i; if (!Number.TryParseUInt32(s, style, info, out i)) { return false; } if (i > MaxValue) { return false; } result = (UInt16) i; return true; } // // IValue implementation // public TypeCode GetTypeCode() { return TypeCode.UInt16; } /// bool IConvertible.ToBoolean(IFormatProvider provider) { return Convert.ToBoolean(m_value); } /// char IConvertible.ToChar(IFormatProvider provider) { return Convert.ToChar(m_value); } /// sbyte IConvertible.ToSByte(IFormatProvider provider) { return Convert.ToSByte(m_value); } /// byte IConvertible.ToByte(IFormatProvider provider) { return Convert.ToByte(m_value); } /// short IConvertible.ToInt16(IFormatProvider provider) { return Convert.ToInt16(m_value); } /// ushort IConvertible.ToUInt16(IFormatProvider provider) { return m_value; } /// int IConvertible.ToInt32(IFormatProvider provider) { return Convert.ToInt32(m_value); } /// uint IConvertible.ToUInt32(IFormatProvider provider) { return Convert.ToUInt32(m_value); } /// long IConvertible.ToInt64(IFormatProvider provider) { return Convert.ToInt64(m_value); } /// ulong IConvertible.ToUInt64(IFormatProvider provider) { return Convert.ToUInt64(m_value); } /// float IConvertible.ToSingle(IFormatProvider provider) { return Convert.ToSingle(m_value); } /// double IConvertible.ToDouble(IFormatProvider provider) { return Convert.ToDouble(m_value); } /// Decimal IConvertible.ToDecimal(IFormatProvider provider) { return Convert.ToDecimal(m_value); } /// DateTime IConvertible.ToDateTime(IFormatProvider provider) { throw new InvalidCastException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("InvalidCast_FromTo"), "UInt16", "DateTime")); } /// Object IConvertible.ToType(Type type, IFormatProvider provider) { return Convert.DefaultToType((IConvertible)this, type, provider); } } }
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