Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/uint16.cs

@@ -0,0 +1,361 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*============================================================
+**
+** Class:  UInt16
+**
+** Purpose: This class will encapsulate a short and provide an
+**          Object representation of it.
+**
+** 
+===========================================================*/
+namespace System {
+    using System.Globalization;
+    using System;
+///#if GENERICS_WORK
+///    using System.Numerics;
+///#endif
+    using System.Runtime.InteropServices;
+    using System.Diagnostics.Contracts;
+
+    // Wrapper for unsigned 16 bit integers.
+[Serializable]
+[CLSCompliant(false), System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)] 
+[System.Runtime.InteropServices.ComVisible(true)]
+#if GENERICS_WORK
+    public struct UInt16 : IComparable, IFormattable, IConvertible
+        , IComparable<UInt16>, IEquatable<UInt16>
+///     , IArithmetic<UInt16>
+#else
+    public struct UInt16 : IComparable, IFormattable, IConvertible
+#endif
+    {
+        private ushort m_value;
+    
+        public const ushort MaxValue = (ushort)0xFFFF;
+        public const ushort MinValue = 0;
+            
+        
+        // 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 UInt16, this method throws an ArgumentException.
+        // 
+        public int CompareTo(Object value) {
+            if (value == null) {
+                return 1;
+            }
+            if (value is UInt16) {
+                return ((int)m_value - (int)(((UInt16)value).m_value));
+            }
+            throw new ArgumentException(Environment.GetResourceString("Arg_MustBeUInt16"));
+        }
+
+        public int CompareTo(UInt16 value) {
+            return ((int)m_value - (int)value);
+        }
+    
+        public override bool Equals(Object obj) {
+            if (!(obj is UInt16)) {
+                return false;
+            }
+            return m_value == ((UInt16)obj).m_value;
+        }
+
+        public bool Equals(UInt16 obj)
+        {
+            return m_value == obj;
+        }
+
+        // Returns a HashCode for the UInt16
+        public override int GetHashCode() {
+            return (int)m_value;
+        }
+
+        // Converts the current value to a String in base-10 with no extra padding.
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public override String ToString() {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatUInt32(m_value, null, NumberFormatInfo.CurrentInfo);
+        }
+
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public String ToString(IFormatProvider provider) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatUInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
+        }
+
+
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public String ToString(String format) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatUInt32(m_value, format, NumberFormatInfo.CurrentInfo);
+        }
+        
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public String ToString(String format, IFormatProvider provider) {
+            Contract.Ensures(Contract.Result<String>() != null);
+            return Number.FormatUInt32(m_value, format, NumberFormatInfo.GetInstance(provider));
+        }
+
+        [CLSCompliant(false)]
+        public static ushort Parse(String s) {
+            return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
+        }
+        
+        [CLSCompliant(false)]
+        public static ushort Parse(String s, NumberStyles style) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return Parse(s, style, NumberFormatInfo.CurrentInfo);
+        }
+
+
+        [CLSCompliant(false)]
+        public static ushort Parse(String s, IFormatProvider provider) {
+            return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
+        }
+        
+        [CLSCompliant(false)]
+        public static ushort Parse(String s, NumberStyles style, IFormatProvider provider) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return Parse(s, style, NumberFormatInfo.GetInstance(provider));
+        }
+        
+        private static ushort Parse(String s, NumberStyles style, NumberFormatInfo info) {
+            
+            uint i = 0;
+            try {
+                i = Number.ParseUInt32(s, style, info);
+            }
+            catch(OverflowException e) {
+                throw new OverflowException(Environment.GetResourceString("Overflow_UInt16"), e);
+            }
+
+            if (i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_UInt16"));
+            return (ushort)i;
+        }
+
+        [CLSCompliant(false)]
+        public static bool TryParse(String s, out UInt16 result) {
+            return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
+        }
+
+        [CLSCompliant(false)]
+        public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out UInt16 result) {
+            NumberFormatInfo.ValidateParseStyleInteger(style);
+            return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result);
+        }
+        
+        private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out UInt16 result) {
+
+            result = 0;
+            UInt32 i;
+            if (!Number.TryParseUInt32(s, style, info, out i)) {
+                return false;
+            }
+            if (i > MaxValue) {
+                return false;
+            }
+            result = (UInt16) i;
+            return true;
+        }
+
+        //
+        // IConvertible implementation
+        // 
+        
+        public TypeCode GetTypeCode() {
+            return TypeCode.UInt16;
+        }
+
+        /// <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 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", "UInt16", "DateTime"));
+        }
+
+        /// <internalonly/>
+        Object IConvertible.ToType(Type type, IFormatProvider provider) {
+            return Convert.DefaultToType((IConvertible)this, type, provider);
+        }
+
+///#if GENERICS_WORK
+///        //
+///        // IArithmetic<UInt16> implementation
+///        //
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.AbsoluteValue(out bool overflowed) {
+///            overflowed = false;
+///            return m_value;
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Negate(out bool overflowed) {
+///            overflowed = (m_value != 0);
+///            return m_value;
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Sign(out bool overflowed) {
+///            overflowed = false;
+///            return (UInt16) (m_value == 0 ? 0 : 1);
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Add(UInt16 addend, out bool overflowed) {
+///            uint u = ((uint)m_value) + addend;
+///            overflowed = (u > MaxValue);
+///            return (UInt16) u;
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Subtract(UInt16 subtrahend, out bool overflowed) {
+///            int i = ((int)m_value) - subtrahend;
+///            overflowed = (i < MinValue);           
+///            return (UInt16) i;
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Multiply(UInt16 multiplier, out bool overflowed) {
+///            //
+///            //   true arithmetic range check         =>     re-written for unsigned int
+///            // -------------------------------            -------------------------------
+///            // ((m_value * multiplier) > MaxValue)   =>   (multiplier != 0) && (m_value > (MaxValue / multiplier))
+///            //
+///
+///            overflowed = (multiplier != 0) && (m_value > (MaxValue / multiplier));
+///            return (UInt16) unchecked(m_value * multiplier);
+///        }
+///
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Divide(UInt16 divisor, out bool overflowed) {
+///            overflowed = false;
+///            return (UInt16) (m_value / divisor);  // divide by zero will fail
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.DivideRemainder(UInt16 divisor, out UInt16 remainder, out bool overflowed) {
+///            overflowed = false;
+///            remainder = (UInt16) (m_value % divisor);
+///            return (UInt16) (m_value / divisor);  // divide by zero will fail
+///        }
+///
+///        /// <internalonly/>
+///        UInt16 IArithmetic<UInt16>.Remainder(UInt16 divisor, out bool overflowed) {
+///            overflowed = false;
+///            return (UInt16) (m_value % divisor);
+///        }
+///        /// <internalonly/>
+///        ArithmeticDescriptor<UInt16> IArithmetic<UInt16>.GetDescriptor() {
+///            if (s_descriptor == null) {
+///                s_descriptor = new UInt16ArithmeticDescriptor( ArithmeticCapabilities.One
+///                                                             | ArithmeticCapabilities.Zero
+///                                                             | ArithmeticCapabilities.MaxValue
+///                                                             | ArithmeticCapabilities.MinValue
+///                                                             | ArithmeticCapabilities.Unsigned);
+///            }
+///            return s_descriptor;
+///        }
+///
+///        private static UInt16ArithmeticDescriptor s_descriptor;
+/// 
+///        class UInt16ArithmeticDescriptor : ArithmeticDescriptor<UInt16> {
+///            public UInt16ArithmeticDescriptor(ArithmeticCapabilities capabilities) : base(capabilities) {}
+///
+///            public override UInt16 One {
+///                get {
+///                    return (UInt16) 1;
+///                }
+///            }
+///
+///            public override UInt16 Zero {
+///                get {
+///                    return (UInt16) 0;
+///                }
+///            }
+///
+///            public override UInt16 MinValue {
+///                get {
+///                    return UInt16.MinValue;
+///                }
+///            }
+///
+///            public override UInt16 MaxValue {
+///                get {
+///                    return UInt16.MaxValue;
+///                }
+///            }
+///        }
+///#endif // #if GENERICS_WORK
+    }
+}