117 lines
3.8 KiB
C#
117 lines
3.8 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: UInt16
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**
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** and Daryl Olander (darylo)
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**
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** Purpose: This class will encapsulate a short and provide an
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** Object representation of it.
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**
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** Date: March 4, 1999
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**
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===========================================================*/
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namespace System {
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using System.Globalization;
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// Wrapper for unsigned 16 bit integers.
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//| <include path='docs/doc[@for="UInt16"]/*' />
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[CLSCompliant(false)]
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[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
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public struct UInt16 : IComparable, IFormattable
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{
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private ushort m_value;
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//| <include path='docs/doc[@for="UInt16.MaxValue"]/*' />
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public const ushort MaxValue = (ushort)0xFFFF;
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//| <include path='docs/doc[@for="UInt16.MinValue"]/*' />
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public const ushort MinValue = 0;
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// Compares this object to another object, returning an integer that
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// indicates the relationship.
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// Returns a value less than zero if this object
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// null is considered to be less than any instance.
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// If object is not of type UInt16, this method throws an ArgumentException.
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//
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//| <include path='docs/doc[@for="UInt16.CompareTo"]/*' />
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public int CompareTo(Object value) {
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if (value == null) {
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return 1;
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}
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if (value is UInt16) {
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return ((int)m_value - (int)(((UInt16)value).m_value));
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}
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throw new ArgumentException("Arg_MustBeUInt16");
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}
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//| <include path='docs/doc[@for="UInt16.Equals"]/*' />
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public override bool Equals(Object obj) {
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if (!(obj is UInt16)) {
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return false;
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}
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return m_value == ((UInt16)obj).m_value;
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}
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// Returns a HashCode for the UInt16
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//| <include path='docs/doc[@for="UInt16.GetHashCode"]/*' />
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public override int GetHashCode() {
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return (int)m_value;
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}
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// Converts the current value to a String in base-10 with no extra padding.
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//| <include path='docs/doc[@for="UInt16.ToString"]/*' />
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public override String ToString() {
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return ToString(null);
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}
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//| <include path='docs/doc[@for="UInt16.ToString2"]/*' />
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public String ToString(String format) {
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return Number.FormatUInt32(m_value, format);
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}
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//| <include path='docs/doc[@for="UInt16.Parse"]/*' />
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[CLSCompliant(false)]
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public static ushort Parse(String s) {
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return Parse(s, NumberStyles.Integer);
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}
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//| <include path='docs/doc[@for="UInt16.Parse3"]/*' />
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[CLSCompliant(false)]
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public static ushort Parse(String s, NumberStyles style) {
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NumberFormatInfo.ValidateParseStyle(style);
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uint i = Number.ParseUInt32(s, style);
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if (i > MaxValue) throw new OverflowException("Overflow_UInt16");
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return (ushort)i;
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}
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//
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// IValue implementation
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//
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//| <include path='docs/doc[@for="UInt16.GetTypeCode"]/*' />
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[NoHeapAllocation]
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public override TypeCode GetTypeCode()
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{
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return TypeCode.UInt16;
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}
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//
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// This is just designed to prevent compiler warnings.
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// This field is used from native, but we need to prevent the compiler warnings.
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//
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#if _DEBUG
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private void DontTouchThis() {
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m_value = 0;
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}
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#endif
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}
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}
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