Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Int32.cs / 1 / Int32.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: Int32 ** ** ** Purpose: A representation of a 32 bit 2's complement ** integer. ** ** ===========================================================*/ namespace System { using System; using System.Globalization; using System.Runtime.InteropServices; [Serializable, System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)] [System.Runtime.InteropServices.ComVisible(true)] public struct Int32 : IComparable, IFormattable, IConvertible #if GENERICS_WORK , IComparable, IEquatable #endif { internal int m_value; public const int MaxValue = 0x7fffffff; public const int MinValue = unchecked((int)0x80000000); // 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 Int32, this method throws an ArgumentException. // public int CompareTo(Object value) { if (value == null) { return 1; } if (value is Int32) { // Need to use compare because subtraction will wrap // to positive for very large neg numbers, etc. int i = (int)value; if (m_value < i) return -1; if (m_value > i) return 1; return 0; } throw new ArgumentException (Environment.GetResourceString("Arg_MustBeInt32")); } public int CompareTo(int value) { // Need to use compare because subtraction will wrap // to positive for very large neg numbers, etc. if (m_value < value) return -1; if (m_value > value) return 1; return 0; } public override bool Equals(Object obj) { if (!(obj is Int32)) { return false; } return m_value == ((Int32)obj).m_value; } public bool Equals(Int32 obj) { return m_value == obj; } // The absolute value of the int contained. public override int GetHashCode() { return m_value; } public override String ToString() { return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo); } public String ToString(String format) { return Number.FormatInt32(m_value, format, NumberFormatInfo.CurrentInfo); } public String ToString(IFormatProvider provider) { return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider)); } public String ToString(String format, IFormatProvider provider) { return Number.FormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider)); } public static int Parse(String s) { return Number.ParseInt32(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo); } public static int Parse(String s, NumberStyles style) { NumberFormatInfo.ValidateParseStyleInteger(style); return Number.ParseInt32(s, style, NumberFormatInfo.CurrentInfo); } // Parses an integer from a String in the given style. If // a NumberFormatInfo isn't specified, the current culture's // NumberFormatInfo is assumed. // public static int Parse(String s, IFormatProvider provider) { return Number.ParseInt32(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider)); } // Parses an integer from a String in the given style. If // a NumberFormatInfo isn't specified, the current culture's // NumberFormatInfo is assumed. // public static int Parse(String s, NumberStyles style, IFormatProvider provider) { NumberFormatInfo.ValidateParseStyleInteger(style); return Number.ParseInt32(s, style, NumberFormatInfo.GetInstance(provider)); } // Parses an integer from a String. Returns false rather // than throwing exceptin if input is invalid // public static bool TryParse(String s, out Int32 result) { return Number.TryParseInt32(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result); } // Parses an integer from a String in the given style. Returns false rather // than throwing exceptin if input is invalid // public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Int32 result) { NumberFormatInfo.ValidateParseStyleInteger(style); return Number.TryParseInt32(s, style, NumberFormatInfo.GetInstance(provider), out result); } // // IValue implementation // public TypeCode GetTypeCode() { return TypeCode.Int32; } /// 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 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(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("InvalidCast_FromTo"), "Int32", "DateTime")); } /// Object IConvertible.ToType(Type type, IFormatProvider provider) { return Convert.DefaultToType((IConvertible)this, type, provider); } } }
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