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//
// System.Int16.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
using System.Globalization;
namespace System {
[Serializable]
public struct Int16 : IComparable, IFormattable, IConvertible {
public const short MaxValue = 32767;
public const short MinValue = -32768;
// VES needs to know about value. public is workaround
// so source will compile
public short value;
public int CompareTo (object v)
{
if (v == null)
return 1;
if (!(v is System.Int16))
throw new ArgumentException (Locale.GetText ("Value is not a System.Int16"));
short xv = (short) v;
if (value == xv)
return 0;
if (value > xv)
return 1;
else
return -1;
}
public override bool Equals (object o)
{
if (!(o is System.Int16))
return false;
return ((short) o) == value;
}
public override int GetHashCode ()
{
return value;
}
public static short Parse (string s)
{
short val = 0;
int len;
int i, sign = 1;
bool digits_seen = false;
if (s == null)
throw new ArgumentNullException (Locale.GetText ("s is null"));
len = s.Length;
char c;
for (i = 0; i < len; i++){
c = s [i];
if (!Char.IsWhiteSpace (c))
break;
}
if (i == len)
throw new FormatException ();
c = s [i];
if (c == '+')
i++;
else if (c == '-'){
sign = -1;
i++;
}
for (; i < len; i++){
c = s [i];
if (c >= '0' && c <= '9'){
val = checked ((short) (val * 10 + (c - '0') * sign));
digits_seen = true;
} else {
if (Char.IsWhiteSpace (c)){
for (i++; i < len; i++){
if (!Char.IsWhiteSpace (s [i]))
throw new FormatException ();
}
break;
} else
throw new FormatException ();
}
}
if (!digits_seen)
throw new FormatException ();
return val;
}
public static short Parse (string s, IFormatProvider fp)
{
return Parse (s, NumberStyles.Integer, fp);
}
public static short Parse (string s, NumberStyles style)
{
return Parse (s, style, null);
}
public static short Parse (string s, NumberStyles style, IFormatProvider fp)
{
int tmpResult = Int32.Parse (s, style, fp);
if (tmpResult > Int16.MaxValue || tmpResult < Int16.MinValue)
throw new OverflowException ("Value too large or too small.");
return (short) tmpResult;
}
public override string ToString ()
{
return ToString (null, null);
}
public string ToString (IFormatProvider fp)
{
return ToString (null, fp);
}
public string ToString (string format)
{
return ToString (format, null);
}
public string ToString (string format, IFormatProvider fp)
{
NumberFormatInfo nfi = NumberFormatInfo.GetInstance( fp );
if ( format == null )
format = "G";
return IntegerFormatter.NumberToString(format, nfi, value);
}
// =========== IConvertible Methods =========== //
public TypeCode GetTypeCode ()
{
return TypeCode.Int16;
}
bool IConvertible.ToBoolean (IFormatProvider provider)
{
return System.Convert.ToBoolean (value);
}
byte IConvertible.ToByte (IFormatProvider provider)
{
return System.Convert.ToByte (value);
}
char IConvertible.ToChar (IFormatProvider provider)
{
return System.Convert.ToChar (value);
}
DateTime IConvertible.ToDateTime (IFormatProvider provider)
{
return System.Convert.ToDateTime (value);
}
decimal IConvertible.ToDecimal (IFormatProvider provider)
{
return System.Convert.ToDecimal (value);
}
double IConvertible.ToDouble (IFormatProvider provider)
{
return System.Convert.ToDouble (value);
}
short IConvertible.ToInt16 (IFormatProvider provider)
{
return System.Convert.ToInt16 (value);
}
int IConvertible.ToInt32 (IFormatProvider provider)
{
return System.Convert.ToInt32 (value);
}
long IConvertible.ToInt64 (IFormatProvider provider)
{
return System.Convert.ToInt64 (value);
}
[CLSCompliant (false)]
sbyte IConvertible.ToSByte (IFormatProvider provider)
{
return System.Convert.ToSByte (value);
}
float IConvertible.ToSingle (IFormatProvider provider)
{
return System.Convert.ToSingle (value);
}
object IConvertible.ToType (Type conversionType, IFormatProvider provider)
{
return System.Convert.ToType (value, conversionType, provider);
}
[CLSCompliant (false)]
ushort IConvertible.ToUInt16 (IFormatProvider provider)
{
return System.Convert.ToUInt16 (value);
}
[CLSCompliant (false)]
uint IConvertible.ToUInt32 (IFormatProvider provider)
{
return System.Convert.ToUInt32 (value);
}
[CLSCompliant (false)]
ulong IConvertible.ToUInt64 (IFormatProvider provider)
{
return System.Convert.ToUInt64 (value);
}
}
}
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