2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mcs / class / corlib / System / UInt64.cs
index 27a55dde59cc669a910ea7b9fa2c99e594033365..70f6bc97f130075c9576c0495d550434fbed4e65 100644 (file)
 //   Miguel de Icaza (miguel@ximian.com)
 //
 // (C) Ximian, Inc.  http://www.ximian.com
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
 using System.Globalization;
 using System.Threading;
 
-namespace System {
-
-       [CLSCompliant(false)]
+namespace System
+{
        [Serializable]
-       public struct UInt64 : IComparable, IFormattable, IConvertible {
+       [CLSCompliant (false)]
+       public struct UInt64 : IFormattable, IConvertible,
+#if NET_2_0
+               IComparable, IComparable<UInt64>
+#else
+               IComparable
+#endif
+       {
                public const ulong MaxValue = 0xffffffffffffffff;
                public const ulong MinValue = 0;
-               
-               public ulong value;
 
-               public int CompareTo (object v)
+               internal ulong m_value;
+
+               public int CompareTo (object value)
                {
-                       if (v == null)
+                       if (value == null)
                                return 1;
 
-                       if (!(v is System.UInt64))
-                               throw new ArgumentException (Locale.GetText ("Value is not a System.UInt64"));
+                       if (!(value is System.UInt64))
+                               throw new ArgumentException (Locale.GetText ("Value is not a System.UInt64."));
 
-                       if (value == (ulong) v)
+                       if (this.m_value == (ulong) value)
                                return 0;
 
-                       if (value < (ulong) v)
+                       if (this.m_value < (ulong) value)
                                return -1;
 
                        return 1;
                }
 
-               public override bool Equals (object o)
+               public override bool Equals (object obj)
                {
-                       if (!(o is System.UInt64))
+                       if (!(obj is System.UInt64))
                                return false;
 
-                       return ((ulong) o) == value;
+                       return ((ulong) obj) == m_value;
                }
 
                public override int GetHashCode ()
                {
-                       return (int)(value & 0xffffffff) ^ (int)(value >> 32);
+                       return (int)(m_value & 0xffffffff) ^ (int)(m_value >> 32);
+               }
+
+#if NET_2_0
+               public int CompareTo (ulong value)
+               {
+                       if (m_value == value)
+                               return 0;
+                       if (m_value > value)
+                               return 1;
+                       else
+                               return -1;
+               }
+
+               public bool Equals (ulong value)
+               {
+                       return value == m_value;
                }
+#endif
 
-               [CLSCompliant(false)]
+               [CLSCompliant (false)]
                public static ulong Parse (string s)
                {
                        return Parse (s, NumberStyles.Integer, null);
                }
 
-               [CLSCompliant(false)]
-               public static ulong Parse (string s, IFormatProvider fp)
+               [CLSCompliant (false)]
+               public static ulong Parse (string s, IFormatProvider provider)
                {
-                       return Parse (s, NumberStyles.Integer, fp);
+                       return Parse (s, NumberStyles.Integer, provider);
                }
 
-               [CLSCompliant(false)]
+               [CLSCompliant (false)]
                public static ulong Parse (string s, NumberStyles style)
                {
                        return Parse (s, style, null);
                }
 
-               [CLSCompliant(false)]
-               public static ulong Parse (string s, NumberStyles style, IFormatProvider fp)
+               internal static bool Parse (string s, NumberStyles style, IFormatProvider provider, bool tryParse, out ulong result)
                {
+                       result = 0;
+
                        if (s == null)
-                               throw new ArgumentNullException ();
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new ArgumentNullException ("s");
 
                        if (s.Length == 0)
-                               throw new FormatException ("Input string was not in the correct format.");
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 
                        NumberFormatInfo nfi;
-                       if (fp != null) {
-                               Type typeNFI = typeof (System.Globalization.NumberFormatInfo);
-                               nfi = (NumberFormatInfo) fp.GetFormat (typeNFI);
+                       if (provider != null) {
+                               Type typeNFI = typeof (NumberFormatInfo);
+                               nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
                        }
                        else
                                nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
@@ -88,7 +138,6 @@ namespace System {
                        Int32.CheckStyle (style);
 
                        bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
-                       bool AllowExponent = (style & NumberStyles.AllowExponent) != 0;
                        bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
                        bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
                        bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
@@ -119,9 +168,15 @@ namespace System {
                                        pos = Int32.JumpOverWhite (pos, s, true);
 
                                if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
-                                       throw new FormatException ("Input string was not in the correct format.");
+                                       if (tryParse)
+                                               return false;
+                                       else
+                                               throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
                                if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
-                                       throw new FormatException ("Input string was not in the correct format.");
+                                       if (tryParse)
+                                               return false;
+                                       else
+                                               throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
                        }
 
                        if (AllowLeadingSign && !foundSign) {
@@ -138,7 +193,7 @@ namespace System {
                                        }
                                }
                        }
-                       
+
                        if (AllowCurrencySymbol && !foundCurrency) {
                                // Currency + sign
                                Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
@@ -155,28 +210,26 @@ namespace System {
                                        }
                                }
                        }
-                       
+
                        ulong number = 0;
                        int nDigits = 0;
                        bool decimalPointFound = false;
                        ulong digitValue;
                        char hexDigit;
-                               
+
                        // Number stuff
                        // Just the same as Int32, but this one adds instead of substract
                        do {
 
                                if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
-                                       if (AllowThousands &&
-                                           Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
-                                           continue;
+                                       if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
+                                               continue;
                                        else
-                                       if (!decimalPointFound && AllowDecimalPoint &&
-                                           Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
-                                           decimalPointFound = true;
-                                           continue;
-                                       }
-
+                                               if (!decimalPointFound && AllowDecimalPoint && 
+                                                   Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
+                                                       decimalPointFound = true;
+                                                       continue;
+                                               }
                                        break;
                                }
                                else if (AllowHexSpecifier) {
@@ -196,25 +249,32 @@ namespace System {
                                        // Allows decimal point as long as it's only 
                                        // followed by zeroes.
                                        if (s [pos++] != '0')
-                                               throw new OverflowException ("Value too large or too small.");
+                                               if (tryParse)
+                                                       return false;
+                                               else
+                                                       throw new OverflowException (Locale.GetText ("Value too large or too small."));
                                }
                                else {
                                        nDigits++;
 
                                        try {
-                                               number = checked (
-                                                       number * 10 + 
-                                                       (ulong) (s [pos++] - '0')
-                                                       );
-                                       } catch (OverflowException) {
-                                               throw new OverflowException ("Value too large or too small.");
+                                               number = checked (number * 10 + (ulong) (s [pos++] - '0'));
+                                       }
+                                       catch (OverflowException) {
+                                               if (tryParse)
+                                                       return false;
+                                               else
+                                                       throw new OverflowException (Locale.GetText ("Value too large or too small."));
                                        }
                                }
                        } while (pos < s.Length);
 
                        // Post number stuff
                        if (nDigits == 0)
-                               throw new FormatException ("Input string was not in the correct format.");
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 
                        if (AllowTrailingSign && !foundSign) {
                                // Sign + Currency
@@ -223,11 +283,10 @@ namespace System {
                                        if (AllowTrailingWhite)
                                                pos = Int32.JumpOverWhite (pos, s, true);
                                        if (AllowCurrencySymbol)
-                                               Int32.FindCurrency (ref pos, s, nfi,
-                                                                   ref foundCurrency);
+                                               Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
                                }
                        }
-                       
+
                        if (AllowCurrencySymbol && !foundCurrency) {
                                // Currency + sign
                                Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
@@ -235,39 +294,85 @@ namespace System {
                                        if (AllowTrailingWhite)
                                                pos = Int32.JumpOverWhite (pos, s, true);
                                        if (!foundSign && AllowTrailingSign)
-                                               Int32.FindSign (ref pos, s, nfi, ref foundSign,
-                                                               ref negative);
+                                               Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
                                }
                        }
-                       
+
                        if (AllowTrailingWhite && pos < s.Length)
                                pos = Int32.JumpOverWhite (pos, s, false);
 
                        if (foundOpenParentheses) {
                                if (pos >= s.Length || s [pos++] != ')')
-                                       throw new FormatException ("Input string was not in the correct " + 
-                                                                  "format.");
+                                       if (tryParse)
+                                               return false;
+                                       else
+                                               throw new FormatException (Locale.GetText
+                                                   ("Input string was not in the correct format."));
                                if (AllowTrailingWhite && pos < s.Length)
                                        pos = Int32.JumpOverWhite (pos, s, false);
                        }
 
-                       if (pos < s.Length)
-                               throw new FormatException ("Input string was not in the correct format.");
+                       if (pos < s.Length && s [pos] != '\u0000')
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
+
+                       // -0 is legal but other negative values are not
+                       if (negative && (number > 0)) {
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new OverflowException (
+                                           Locale.GetText ("Negative number"));
+                       }
+
+                       result = number;
+                       return true;
+               }
 
-                       if (negative)
-                               throw new OverflowException ( "Value too large or too small.");
+               [CLSCompliant (false)]
+               public static ulong Parse (string s, NumberStyles style, IFormatProvider fp) {
+                       ulong res;
 
-                       return number;
+                       Parse (s, style, fp, false, out res);
+
+                       return res;
+               }
+
+
+#if NET_2_0
+               [CLSCompliant (false)]
+               public static bool TryParse (string s, out ulong result) {
+                       try {
+                               return Parse (s, NumberStyles.Integer, null, true, out result);
+                       }
+                       catch (Exception) {
+                               result = 0;
+                               return false;
+                       }
                }
 
+               [CLSCompliant (false)]
+               public static bool TryParse (string s, NumberStyles style, IFormatProvider provider, out ulong result) {
+                       try {
+                               return Parse (s, style, provider, true, out result);
+                       }
+                       catch (Exception) {
+                               result = 0;
+                               return false;
+                       }
+               }
+#endif
+
                public override string ToString ()
                {
                        return ToString (null, null);
                }
 
-               public string ToString (IFormatProvider fp)
+               public string ToString (IFormatProvider provider)
                {
-                       return ToString (null, fp);
+                       return ToString (null, provider);
                }
 
                public string ToString (string format)
@@ -275,85 +380,96 @@ namespace System {
                        return ToString (format, null);
                }
 
-               public string ToString (string format, IFormatProvider fp)
+               public string ToString (string format, IFormatProvider provider)
                {
-                       NumberFormatInfo nfi = NumberFormatInfo.GetInstance( fp );
-                       
-                       if ( format == null )
+                       NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
+
+                       // use "G" when format is null or String.Empty
+                       if ((format == null) || (format.Length == 0))
                                format = "G";
-                       
-                       return IntegerFormatter.NumberToString(format, nfi, value);
+
+                       return IntegerFormatter.NumberToString (format, nfi, m_value);
                }
 
                // =========== IConvertible Methods =========== //
-
                public TypeCode GetTypeCode ()
                {
                        return TypeCode.UInt64;
                }
-               bool     IConvertible.ToBoolean  (IFormatProvider provider)
+
+               bool IConvertible.ToBoolean (IFormatProvider provider)
                {
-                       return System.Convert.ToBoolean (value);
+                       return System.Convert.ToBoolean (m_value);
                }
-               byte     IConvertible.ToByte     (IFormatProvider provider)
+
+               byte IConvertible.ToByte (IFormatProvider provider)
                {
-                       return System.Convert.ToByte (value);
+                       return System.Convert.ToByte (m_value);
                }
-               char     IConvertible.ToChar     (IFormatProvider provider)
+
+               char IConvertible.ToChar (IFormatProvider provider)
                {
-                       return System.Convert.ToChar (value);
+                       return System.Convert.ToChar (m_value);
                }
+
                DateTime IConvertible.ToDateTime (IFormatProvider provider)
                {
-                       throw new NotImplementedException ();
+                       return System.Convert.ToDateTime (m_value);
                }
-               decimal  IConvertible.ToDecimal  (IFormatProvider provider)
+
+               decimal IConvertible.ToDecimal (IFormatProvider provider)
                {
-                       return System.Convert.ToDecimal (value);
+                       return System.Convert.ToDecimal (m_value);
                }
-               double   IConvertible.ToDouble   (IFormatProvider provider)
+
+               double IConvertible.ToDouble (IFormatProvider provider)
                {
-                       return System.Convert.ToDouble (value);
+                       return System.Convert.ToDouble (m_value);
                }
-               short    IConvertible.ToInt16    (IFormatProvider provider)
+
+               short IConvertible.ToInt16 (IFormatProvider provider)
                {
-                       return System.Convert.ToInt16 (value);
+                       return System.Convert.ToInt16 (m_value);
                }
-               int      IConvertible.ToInt32    (IFormatProvider provider)
+
+               int IConvertible.ToInt32 (IFormatProvider provider)
                {
-                       return System.Convert.ToInt32 (value);
+                       return System.Convert.ToInt32 (m_value);
                }
-               long     IConvertible.ToInt64    (IFormatProvider provider)
+
+               long IConvertible.ToInt64 (IFormatProvider provider)
                {
-                       return System.Convert.ToInt64 (value);
+                       return System.Convert.ToInt64 (m_value);
                }
-               [CLSCompliant(false)]
-               sbyte    IConvertible.ToSByte    (IFormatProvider provider)
+
+               sbyte IConvertible.ToSByte(IFormatProvider provider)
                {
-                       return System.Convert.ToSByte (value);
+                       return System.Convert.ToSByte (m_value);
                }
-               float    IConvertible.ToSingle   (IFormatProvider provider)
+
+               float IConvertible.ToSingle (IFormatProvider provider)
                {
-                       return System.Convert.ToSingle (value);
+                       return System.Convert.ToSingle (m_value);
                }
+
                object IConvertible.ToType (Type conversionType, IFormatProvider provider)
                {
-                       throw new NotImplementedException ();
+                       return System.Convert.ToType (m_value, conversionType, provider);
                }
-               [CLSCompliant(false)]
-               ushort   IConvertible.ToUInt16   (IFormatProvider provider)
+
+               ushort IConvertible.ToUInt16 (IFormatProvider provider)
                {
-                       return System.Convert.ToUInt16 (value);
+                       return System.Convert.ToUInt16 (m_value);
                }
-               [CLSCompliant(false)]
-               uint     IConvertible.ToUInt32   (IFormatProvider provider)
+
+               uint IConvertible.ToUInt32 (IFormatProvider provider)
                {
-                       return System.Convert.ToUInt32 (value);
+                       return System.Convert.ToUInt32 (m_value);
                }
-               [CLSCompliant(false)]
-               ulong    IConvertible.ToUInt64   (IFormatProvider provider)
+
+               ulong IConvertible.ToUInt64 (IFormatProvider provider)
                {
-                       return value;
+                       return m_value;
                }
        }
 }