Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/int16.cs

@@ -0,0 +1,391 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*============================================================
+**
+** Class:  Int16.cs
+**
+**
+** Purpose: This class will encapsulate a short and provide an
+**          Object representation of it.
+**
+** 
+===========================================================*/
+
+namespace System {
+    
+    using System;
+    using System.Globalization;
+///#if GENERICS_WORK
+///    using System.Numerics;
+///#endif
+    using System.Runtime.InteropServices;
+    using System.Diagnostics.Contracts;
+
+[System.Runtime.InteropServices.ComVisible(true)]
+[Serializable]
+[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
+#if GENERICS_WORK
+    public struct Int16 : IComparable, IFormattable, IConvertible
+        , IComparable<Int16>, IEquatable<Int16>
+///     , IArithmetic<Int16>
+#else
+    public struct Int16 : IComparable, IFormattable, IConvertible
+#endif
+    {
+        internal short m_value;
+    
+        public const short MaxValue = (short)0x7FFF;
+        public const short MinValue = unchecked((short)0x8000);
+        
+        // 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 Int16, this method throws an ArgumentException.
+        // 
+        public int CompareTo(Object value) {
+            if (value == null) {
+                return 1;
+            }
+    
+            if (value is Int16) {
+                return m_value - ((Int16)value).m_value;
+            }
+    
+            throw new ArgumentException(Environment.GetResourceString("Arg_MustBeInt16"));
+        }
+
+        public int CompareTo(Int16 value) {
+            return m_value - value;
+        }
+    
+        public override bool Equals(Object obj) {
+            if (!(obj is Int16)) {
+                return false;
+            }
+            return m_value == ((Int16)obj).m_value;
+        }
+
+        public bool Equals(Int16 obj)
+        {
+            return m_value == obj;
+        }
+
+        // Returns a HashCode for the Int16
+        public override int GetHashCode() {
+            return ((int)((ushort)m_value) | (((int)m_value) << 16));
+        }
+    
+
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public override String ToString() {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
+        }
+        
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public String ToString(IFormatProvider provider) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
+        }        
+
+        public String ToString(String format) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return ToString(format, NumberFormatInfo.CurrentInfo);
+        }        
+    
+        public String ToString(String format, IFormatProvider provider) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return ToString(format, NumberFormatInfo.GetInstance(provider));
+        }
+
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        private String ToString(String format, NumberFormatInfo info) {
+            Contract.Ensures(Contract.Result<String>() != null);
+
+            if (m_value<0 && format!=null && format.Length>0 && (format[0]=='X' || format[0]=='x')) {
+                uint temp = (uint)(m_value & 0x0000FFFF);
+                return Number.FormatUInt32(temp,format, info);
+            }
+            return Number.FormatInt32(m_value, format, info);
+        }
+    
+        public static short Parse(String s) {
+            return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
+        }
+    
+        public static short Parse(String s, NumberStyles style) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return Parse(s, style, NumberFormatInfo.CurrentInfo);
+        }
+
+        public static short Parse(String s, IFormatProvider provider) {
+            return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
+        }
+
+        public static short Parse(String s, NumberStyles style, IFormatProvider provider) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return Parse(s, style, NumberFormatInfo.GetInstance(provider));
+        }
+        
+        private static short 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_Int16"), e);
+            }
+
+            // We need this check here since we don't allow signs to specified in hex numbers. So we fixup the result
+            // for negative numbers
+            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number
+                if ((i < 0) || (i > UInt16.MaxValue)) {
+                    throw new OverflowException(Environment.GetResourceString("Overflow_Int16"));
+                }
+                return (short)i;
+            }
+                
+            if (i < MinValue || i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_Int16"));
+            return (short)i;
+        }
+
+        public static bool TryParse(String s, out Int16 result) {
+            return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
+        }
+
+        public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Int16 result) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result);
+        }
+        
+        private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out Int16 result) {
+
+            result = 0;
+            int i;
+            if (!Number.TryParseInt32(s, style, info, out i)) {
+                return false;
+            }
+
+            // We need this check here since we don't allow signs to specified in hex numbers. So we fixup the result
+            // for negative numbers
+            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number
+                if ((i < 0) || i > UInt16.MaxValue) {
+                    return false;
+                }
+                result = (Int16) i;
+                return true;
+            }
+                
+            if (i < MinValue || i > MaxValue) {
+                return false;
+            }
+            result = (Int16) i;
+            return true;
+        }
+
+        //
+        // IConvertible implementation
+        // 
+        
+        public TypeCode GetTypeCode() {
+            return TypeCode.Int16;
+        }
+
+
+        /// <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 m_value;
+        }
+
+        /// <internalonly/>
+        ushort IConvertible.ToUInt16(IFormatProvider provider) {
+            return Convert.ToUInt16(m_value);
+        }
+
+        /// <internalonly/>
+        int IConvertible.ToInt32(IFormatProvider provider) {
+            return Convert.ToInt32(m_value);
+        }
+
+        /// <internalonly/>
+        uint IConvertible.ToUInt32(IFormatProvider provider) {
+            return Convert.ToUInt32(m_value);
+        }
+
+        /// <internalonly/>
+        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", "Int16", "DateTime"));
+        }
+
+        /// <internalonly/>
+        Object IConvertible.ToType(Type type, IFormatProvider provider) {
+            return Convert.DefaultToType((IConvertible)this, type, provider);
+        }
+
+///#if GENERICS_WORK
+///        //
+///        // IArithmetic<Int16> implementation
+///        //
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.AbsoluteValue(out bool overflowed) {
+///            overflowed = (m_value == MinValue);  // -m_value overflows
+///            return (Int16) (m_value < 0 ? -m_value : m_value);
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Negate(out bool overflowed) {
+///            overflowed = (m_value == MinValue); // Negate(MinValue) overflows
+///            return (Int16) (-m_value);
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Sign(out bool overflowed) {
+///            overflowed = false;
+///            return (Int16) (m_value >= 0 ? (m_value == 0 ? 0 : 1) : -1);
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Add(Int16 addend, out bool overflowed) {
+///            int i = ((int)m_value) + addend;
+///            overflowed = (i > MaxValue || i < MinValue);
+///            return (Int16) i;
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Subtract(Int16 subtrahend, out bool overflowed) {
+///            int i = ((int)m_value)- subtrahend;
+///            overflowed = (i > MaxValue || i < MinValue);
+///            return (Int16) i;
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Multiply(Int16 multiplier, out bool overflowed) {
+///            long l = ((long)m_value) * multiplier;
+///            overflowed = (l > MaxValue || l < MinValue);
+///            return (Int16) l;
+///        }
+///
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Divide(Int16 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);
+///            return (Int16) unchecked(m_value / divisor);
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.DivideRemainder(Int16 divisor, out Int16 remainder, out bool overflowed) {
+///            remainder = (Int16) (m_value % divisor);
+///            overflowed = (divisor == -1 && m_value == MinValue);
+///            return (Int16) unchecked(m_value / divisor);
+///        }
+///
+///        /// <internalonly/>
+///        Int16 IArithmetic<Int16>.Remainder(Int16 divisor, out bool overflowed) {
+///            overflowed = false;
+///            return (Int16) (m_value % divisor);
+///        }
+///
+///        /// <internalonly/>
+///        ArithmeticDescriptor<Int16> IArithmetic<Int16>.GetDescriptor() {
+///            if (s_descriptor == null) {
+///                s_descriptor = new Int16ArithmeticDescriptor( ArithmeticCapabilities.One
+///                                                             | ArithmeticCapabilities.Zero
+///                                                             | ArithmeticCapabilities.MaxValue
+///                                                             | ArithmeticCapabilities.MinValue);
+///            }
+///            return s_descriptor;
+///        }
+///
+///        private static Int16ArithmeticDescriptor s_descriptor;
+/// 
+///        class Int16ArithmeticDescriptor : ArithmeticDescriptor<Int16> {
+///            public Int16ArithmeticDescriptor(ArithmeticCapabilities capabilities) : base(capabilities) {}
+///
+///            public override Int16 One {
+///                get {
+///                    return (Int16) 1;
+///                }
+///            }
+///
+///            public override Int16 Zero {
+///                get {
+///                    return (Int16) 0;
+///                }
+///            }
+///
+///            public override Int16 MinValue {
+///                get {
+///                    return Int16.MinValue;
+///                }
+///            }
+///
+///            public override Int16 MaxValue {
+///                get {
+///                    return Int16.MaxValue;
+///                }
+///            }
+///        }
+///#endif // #if GENERICS_WORK
+
+
+    }
+}