SByte.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / SByte.cs / 1 / SByte.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SByte 
**
** 
** Purpose:
**
**
===========================================================*/ 
namespace System {
    using System.Globalization; 
    using System; 
    using System.Runtime.InteropServices;
 
    // A place holder class for signed bytes.
    [Serializable, CLSCompliant(false), System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
[System.Runtime.InteropServices.ComVisible(true)]
    public struct SByte : IComparable, IFormattable, IConvertible 
#if GENERICS_WORK
        , IComparable, IEquatable 
#endif 
    {
        private sbyte m_value; 

        // The maximum value that a Byte may represent: 127.
        public const sbyte MaxValue = (sbyte)0x7F;
 
        // The minimum value that a Byte may represent: -128.
        public const sbyte MinValue = unchecked((sbyte)0x80); 
 

        // 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 SByte, this method throws an ArgumentException. 
        //
        public int CompareTo(Object obj) { 
            if (obj == null) { 
                return 1;
            } 
            if (!(obj is SByte)) {
                throw new ArgumentException (Environment.GetResourceString("Arg_MustBeSByte"));
            }
            return m_value - ((SByte)obj).m_value; 
        }
 
        public int CompareTo(SByte value) { 
            return m_value - value;
        } 

        // Determines whether two Byte objects are equal.
        public override bool Equals(Object obj) {
            if (!(obj is SByte)) { 
                return false;
            } 
            return m_value == ((SByte)obj).m_value; 
        }
 
        public bool Equals(SByte obj)
        {
            return m_value == obj;
        } 

        // Gets a hash code for this instance. 
        public override int GetHashCode() { 
            return ((int)m_value ^ (int)m_value << 8);
        } 


        // Provides a string representation of a byte.
        public override String ToString() { 
            return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
        } 
 
        public String ToString(IFormatProvider provider) {
            return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider)); 
        }

        public String ToString(String format) {
            return ToString(format, NumberFormatInfo.CurrentInfo); 
        }
 
        public String ToString(String format, IFormatProvider provider) { 
            return ToString(format, NumberFormatInfo.GetInstance(provider));
        } 

        private String ToString(String format, NumberFormatInfo info) {
            if (m_value<0 && format!=null && format.Length>0 && (format[0]=='X' || format[0]=='x')) {
                uint temp = (uint)(m_value & 0x000000FF); 
                return Number.FormatUInt32(temp, format, info);
            } 
            return Number.FormatInt32(m_value, format, info); 
        }
 
        [CLSCompliant(false)]
        public static sbyte Parse(String s) {
            return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
        } 

        [CLSCompliant(false)] 
        public static sbyte Parse(String s, NumberStyles style) { 
            NumberFormatInfo.ValidateParseStyleInteger(style);
            return Parse(s, style, NumberFormatInfo.CurrentInfo); 
        }

        [CLSCompliant(false)]
        public static sbyte Parse(String s, IFormatProvider provider) { 
            return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
        } 
 
        // Parses a signed byte from a String in the given style.  If
        // a NumberFormatInfo isn't specified, the current culture's 
        // NumberFormatInfo is assumed.
        //
        [CLSCompliant(false)]
        public static sbyte Parse(String s, NumberStyles style, IFormatProvider provider) { 
            NumberFormatInfo.ValidateParseStyleInteger(style);
            return Parse(s, style, NumberFormatInfo.GetInstance(provider)); 
        } 

        private static sbyte Parse(String s, NumberStyles style, NumberFormatInfo info) { 

            int i = 0;
            try {
                i = Number.ParseInt32(s, style, info); 
            }
            catch(OverflowException e) { 
                throw new OverflowException(Environment.GetResourceString("Overflow_SByte"), e); 
            }
 
            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number
                if ((i < 0) || i > Byte.MaxValue) {
                    throw new OverflowException(Environment.GetResourceString("Overflow_SByte"));
                } 
                return (sbyte)i;
            } 
 
        if (i < MinValue || i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_SByte"));
            return (sbyte)i; 
        }

        [CLSCompliant(false)]
        public static bool TryParse(String s, out SByte result) { 
            return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
        } 
 
        [CLSCompliant(false)]
        public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out SByte result) { 
            NumberFormatInfo.ValidateParseStyleInteger(style);
            return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result);
        }
 
        private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out SByte result) {
 
            result = 0; 
            int i;
            if (!Number.TryParseInt32(s, style, info, out i)) { 
                return false;
            }

            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number 
                if ((i < 0) || i > Byte.MaxValue) {
                    return false; 
                } 
                result = (sbyte)i;
                return true; 
            }

            if (i < MinValue || i > MaxValue) {
                return false; 
            }
            result = (sbyte) i; 
            return true; 
        }
 
        //
        // IValue implementation
        //
 
        public TypeCode GetTypeCode() {
            return TypeCode.SByte; 
        } 

 
        /// 
        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 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 Convert.ToUInt16(m_value);
        }

        ///  
        int IConvertible.ToInt32(IFormatProvider provider) {
            return 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(Environment.GetResourceString("InvalidCast_FromTo", "SByte", "DateTime"));
        } 
 
        /// 
        Object IConvertible.ToType(Type type, IFormatProvider provider) { 
            return Convert.DefaultToType((IConvertible)this, type, provider);
        }
    }
}
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SByte.cs source code in C# .NET

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