125 lines
4.1 KiB
C#
125 lines
4.1 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: Int16.cool
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**
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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: August 3, 1998
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**
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===========================================================*/
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namespace System {
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using System;
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using System.Globalization;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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//| <include path='docs/doc[@for="Int16"]/*' />
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[StructLayout(LayoutKind.Sequential)]
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public struct Int16 : IComparable, IFormattable
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{
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internal short m_value;
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//| <include path='docs/doc[@for="Int16.MaxValue"]/*' />
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public const short MaxValue = (short)0x7FFF;
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//| <include path='docs/doc[@for="Int16.MinValue"]/*' />
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public const short MinValue = unchecked((short)0x8000);
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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 Int16, this method throws an ArgumentException.
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//
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//| <include path='docs/doc[@for="Int16.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 Int16) {
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return m_value - ((Int16)value).m_value;
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}
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throw new ArgumentException("Arg_MustBeInt16");
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}
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//| <include path='docs/doc[@for="Int16.Equals"]/*' />
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public override bool Equals(Object obj) {
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if (!(obj is Int16)) {
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return false;
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}
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return m_value == ((Int16)obj).m_value;
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}
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// Returns a HashCode for the Int16
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//| <include path='docs/doc[@for="Int16.GetHashCode"]/*' />
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public override int GetHashCode() {
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return ((int)((ushort)m_value) | (((int)m_value) << 16));
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}
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//| <include path='docs/doc[@for="Int16.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="Int16.ToString2"]/*' />
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public String ToString(String format) {
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if (m_value<0 && format!=null && format.Length>0 && (format[0]=='X' || format[0]=='x')) {
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uint temp = (uint)(m_value & 0x0000FFFF);
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return Number.FormatUInt32(temp,format);
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}
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return Number.FormatInt32(m_value, format);
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}
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//| <include path='docs/doc[@for="Int16.Parse"]/*' />
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public static short 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="Int16.Parse3"]/*' />
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public static short Parse(String s, NumberStyles style) {
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NumberFormatInfo.ValidateParseStyle(style);
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int i = Number.ParseInt32(s, style);
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// We need this check here since we don't allow signs to specified in hex numbers. So we fixup the result
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// for negative numbers
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if (((style & NumberStyles.AllowHexSpecifier) != 0) && (i <= UInt16.MaxValue)) // We are parsing a hexadecimal number
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return (short)i;
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if (i < MinValue || i > MaxValue) throw new OverflowException("Overflow_Int16");
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return (short)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="Int16.GetTypeCode"]/*' />
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[NoHeapAllocation]
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public override TypeCode GetTypeCode() {
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return TypeCode.Int16;
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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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