System

// ==++== ////   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; ///#if GENERICS_WORK///    using System.Numerics;///#endif    using System.Runtime;     using System.Runtime.InteropServices;    using System.Diagnostics.Contracts;  [Serializable][System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)] [System.Runtime.InteropServices.ComVisible(true)]#if GENERICS_WORK    public struct Int32 : IComparable, IFormattable, IConvertible        , IComparable<Int32>, IEquatable<Int32> ///     , IArithmetic<Int32>#if false // ugly hack to fix syntax for TrimSrc parser, which ignores #if directives     {     }#endif #else    public struct Int32 : IComparable, IFormattable, IConvertible#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"));        }#if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]#endif         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;        } #if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        public override bool Equals(Object obj) {             if (!(obj is Int32)) {                return false;            }            return m_value == ((Int32)obj).m_value;         } #if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]#endif         public bool Equals(Int32 obj)        {            return m_value == obj;        }         // The absolute value of the int contained. #if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]#endif         public override int GetHashCode() {            return m_value;        }         [System.Security.SecuritySafeCritical]  // auto-generated#if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]         public override String ToString() {            Contract.Ensures(Contract.Result<String>() != null);            return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);        }         [System.Security.SecuritySafeCritical]  // auto-generated #if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]#endif         [Pure]        public String ToString(String format) {            Contract.Ensures(Contract.Result<String>() != null);            return Number.FormatInt32(m_value, format, NumberFormatInfo.CurrentInfo);         }         [System.Security.SecuritySafeCritical]  // auto-generated #if !FEATURE_CORECLR        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]        public String ToString(IFormatProvider provider) {            Contract.Ensures(Contract.Result<String>() != null);             return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));        }          [Pure]        [System.Security.SecuritySafeCritical]  // auto-generated         public String ToString(String format, IFormatProvider provider) {            Contract.Ensures(Contract.Result<String>() != null);            return Number.FormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider));        }         [Pure]         public static int Parse(String s) {             return Number.ParseInt32(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);        }         [Pure]        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.        //#if !FEATURE_CORECLR        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]         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.         //#if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]         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         //        [Pure]         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         // #if !FEATURE_CORECLR        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]        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);        }          //        // IConvertible implementation         //#if !FEATURE_CORECLR        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        [Pure]         public TypeCode GetTypeCode() {             return TypeCode.Int32;        }         /// <internalonly/>        bool IConvertible.ToBoolean(IFormatProvider provider) {            return Convert.ToBoolean(m_value);         }         /// <internalonly/>         char IConvertible.ToChar(IFormatProvider provider) {            return Convert.ToChar(m_value);         }        /// <internalonly/>        sbyte IConvertible.ToSByte(IFormatProvider provider) {             return Convert.ToSByte(m_value);        }          /// <internalonly/>        byte IConvertible.ToByte(IFormatProvider provider) {             return Convert.ToByte(m_value);        }        /// <internalonly/>         short IConvertible.ToInt16(IFormatProvider provider) {            return Convert.ToInt16(m_value);         }         /// <internalonly/>         ushort IConvertible.ToUInt16(IFormatProvider provider) {            return Convert.ToUInt16(m_value);        }         /// <internalonly/>#if !FEATURE_CORECLR         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] #endif        int IConvertible.ToInt32(IFormatProvider provider) {             return m_value;        }        /// <internalonly/>         uint IConvertible.ToUInt32(IFormatProvider provider) {            return Convert.ToUInt32(m_value);         }         /// <internalonly/> #if !FEATURE_CORECLR        [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]#endif        long IConvertible.ToInt64(IFormatProvider provider) {             return Convert.ToInt64(m_value);        }          /// <internalonly/>        ulong IConvertible.ToUInt64(IFormatProvider provider) {             return Convert.ToUInt64(m_value);        }        /// <internalonly/>         float IConvertible.ToSingle(IFormatProvider provider) {            return Convert.ToSingle(m_value);         }         /// <internalonly/>         double IConvertible.ToDouble(IFormatProvider provider) {            return Convert.ToDouble(m_value);        }         /// <internalonly/>        Decimal IConvertible.ToDecimal(IFormatProvider provider) {             return Convert.ToDecimal(m_value);         }         /// <internalonly/>        DateTime IConvertible.ToDateTime(IFormatProvider provider) {            throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "Int32", "DateTime"));        }         /// <internalonly/>         Object IConvertible.ToType(Type type, IFormatProvider provider) {             return Convert.DefaultToType((IConvertible)this, type, provider);        } ///#if GENERICS_WORK///        /////        // IArithmetic<Int32> implementation ///        ///// ///        /// <internalonly/> ///        Int32 IArithmetic<Int32>.AbsoluteValue(out bool overflowed) {///            overflowed = (m_value == MinValue);  // -m_value overflows ///            return (Int32) (m_value < 0 ? -m_value : m_value);///        }//////        /// <internalonly/> ///        Int32 IArithmetic<Int32>.Negate(out bool overflowed) {///            overflowed = (m_value == MinValue); // Negate(MinValue) overflows ///            return (Int32) (-m_value); ///        }/// ///        /// <internalonly/>///        Int32 IArithmetic<Int32>.Sign(out bool overflowed) {///            overflowed = false;///            return (m_value >= 0 ? (m_value == 0 ? 0 : 1) : -1); ///        }/// ///        /// <internalonly/> ///        Int32 IArithmetic<Int32>.Add(Int32 addend, out bool overflowed) {///            long l = ((long)m_value) + addend; ///            overflowed = (l > MaxValue || l < MinValue);///            return (Int32) l;///        }/// ///        /// <internalonly/>///        Int32 IArithmetic<Int32>.Subtract(Int32 subtrahend, out bool overflowed) { ///            long l = ((long)m_value) - subtrahend; ///            overflowed = (l > MaxValue || l < MinValue);///            return (Int32) l; ///        }//////        /// <internalonly/>///        Int32 IArithmetic<Int32>.Multiply(Int32 multiplier, out bool overflowed) { ///            long l = ((long)m_value) * multiplier;///            overflowed = (l > MaxValue || l < MinValue); ///            return (Int32) l; ///        }/// //////        /// <internalonly/>///        Int32 IArithmetic<Int32>.Divide(Int32 divisor, out bool overflowed) {///            // signed integer division can overflow.  Consider the following ///            // 8-bit case: -128/-1 = 128.///            // 128 won't fit into a signed 8-bit integer, instead you will end up ///            // with -128. ///            /////            // Because of this corner case, we must check if the numerator ///            // is MinValue and if the denominator is -1.//////            overflowed = (divisor == -1 && m_value == MinValue);/// ///            if (overflowed) {///                // we special case (MinValue / (-1)) for Int32 and Int64 as ///                // unchecked still throws OverflowException when variables ///                // are used instead of constants///                return MinValue; ///            }///            else {///                return unchecked(m_value / divisor);///            } ///        }/// ///        /// <internalonly/> ///        Int32 IArithmetic<Int32>.DivideRemainder(Int32 divisor, out Int32 remainder, out bool overflowed) {///            overflowed = (divisor == -1 && m_value == MinValue); //////            if (overflowed) {///                // we special case (MinValue / (-1)) for Int32 and Int64 as///                // unchecked still throws OverflowException when variables ///                // are used instead of constants///                remainder = 0; ///                return MinValue; ///            }///            else { ///                remainder = (m_value % divisor);///                return unchecked(m_value / divisor);///            }///        } //////        /// <internalonly/> ///        Int32 IArithmetic<Int32>.Remainder(Int32 divisor, out bool overflowed) { ///            overflowed = false;/// ///            if (divisor == -1 && m_value == MinValue) {///                // we special case (MinValue % (-1)) for Int32 and Int64 as///                // unchecked still throws OverflowException when variables///                // are used instead of constants ///                return 0;///            } ///            else { ///                return (m_value % divisor);///            } ///        }//////        /// <internalonly/>///        ArithmeticDescriptor<Int32> IArithmetic<Int32>.GetDescriptor() { ///            if (s_descriptor == null) {///                s_descriptor = new Int32ArithmeticDescriptor( ArithmeticCapabilities.One ///                                                             | ArithmeticCapabilities.Zero ///                                                             | ArithmeticCapabilities.MaxValue///                                                             | ArithmeticCapabilities.MinValue); ///            }///            return s_descriptor;///        }/// ///        private static Int32ArithmeticDescriptor s_descriptor;/// ///        class Int32ArithmeticDescriptor : ArithmeticDescriptor<Int32> { ///            public Int32ArithmeticDescriptor(ArithmeticCapabilities capabilities) : base(capabilities) {}/// ///            public override Int32 One {///                get {///                    return (Int32) 1;///                } ///            }/// ///            public override Int32 Zero { ///                get {///                    return (Int32) 0; ///                }///            }//////            public override Int32 MinValue { ///                get {///                    return Int32.MinValue; ///                } ///            }/// ///            public override Int32 MaxValue {///                get {///                    return Int32.MaxValue;///                } ///            }///        } ///#endif // #if GENERICS_WORK     } }// File provided for Reference Use Only by Microsoft Corporation (c) 2007.