2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mcs / class / corlib / System / UInt64.cs
index c77b67429bec4a1e86c12605127d7fd986a20731..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)]
-       public struct UInt64 : IComparable, IFormattable { //, IConvertible {
-               private static Type Type = typeof (ulong);
-
+namespace System
+{
+       [Serializable]
+       [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)]
                public static ulong Parse (string s)
                {
                        return Parse (s, NumberStyles.Integer, null);
                }
 
-               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)]
                public static ulong Parse (string s, NumberStyles style)
                {
                        return Parse (s, style, null);
                }
 
-               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)
                {
-                       ulong val = 0;
-                       int j;
-                       for (j = 0; j < s.Length; ++j) {
-                               if (s [j] >= '0' && s [j] <= '9')
-                                       val = val * 10 + s [j] - '0';
+                       result = 0;
+
+                       if (s == null)
+                               if (tryParse)
+                                       return false;
                                else
+                                       throw new ArgumentNullException ("s");
+
+                       if (s.Length == 0)
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
+
+                       NumberFormatInfo nfi;
+                       if (provider != null) {
+                               Type typeNFI = typeof (NumberFormatInfo);
+                               nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
+                       }
+                       else
+                               nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
+
+                       Int32.CheckStyle (style);
+
+                       bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
+                       bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
+                       bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
+                       bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
+                       bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
+                       bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
+                       bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
+                       bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
+                       bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
+
+                       int pos = 0;
+
+                       if (AllowLeadingWhite)
+                               pos = Int32.JumpOverWhite (pos, s, true);
+
+                       bool foundOpenParentheses = false;
+                       bool negative = false;
+                       bool foundSign = false;
+                       bool foundCurrency = false;
+
+                       // Pre-number stuff
+                       if (AllowParentheses && s [pos] == '(') {
+                               foundOpenParentheses = true;
+                               foundSign = true;
+                               negative = true; // MS always make the number negative when there parentheses
+                                                // even when NumberFormatInfo.NumberNegativePattern != 0!!!
+                               pos++;
+                               if (AllowLeadingWhite)
+                                       pos = Int32.JumpOverWhite (pos, s, true);
+
+                               if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
+                                       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)
+                                       if (tryParse)
+                                               return false;
+                                       else
+                                               throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
+                       }
+
+                       if (AllowLeadingSign && !foundSign) {
+                               // Sign + Currency
+                               Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
+                               if (foundSign) {
+                                       if (AllowLeadingWhite)
+                                               pos = Int32.JumpOverWhite (pos, s, true);
+                                       if (AllowCurrencySymbol) {
+                                               Int32.FindCurrency (ref pos, s, nfi,
+                                                                   ref foundCurrency);
+                                               if (foundCurrency && AllowLeadingWhite)
+                                                       pos = Int32.JumpOverWhite (pos, s, true);
+                                       }
+                               }
+                       }
+
+                       if (AllowCurrencySymbol && !foundCurrency) {
+                               // Currency + sign
+                               Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
+                               if (foundCurrency) {
+                                       if (AllowLeadingWhite)
+                                               pos = Int32.JumpOverWhite (pos, s, true);
+                                       if (foundCurrency) {
+                                               if (!foundSign && AllowLeadingSign) {
+                                                       Int32.FindSign (ref pos, s, nfi, ref foundSign,
+                                                                       ref negative);
+                                                       if (foundSign && AllowLeadingWhite)
+                                                               pos = Int32.JumpOverWhite (pos, s, true);
+                                               }
+                                       }
+                               }
+                       }
+
+                       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;
+                                       else
+                                               if (!decimalPointFound && AllowDecimalPoint && 
+                                                   Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
+                                                       decimalPointFound = true;
+                                                       continue;
+                                               }
                                        break;
+                               }
+                               else if (AllowHexSpecifier) {
+                                       nDigits++;
+                                       hexDigit = s [pos++];
+                                       if (Char.IsDigit (hexDigit))
+                                               digitValue = (ulong) (hexDigit - '0');
+                                       else if (Char.IsLower (hexDigit))
+                                               digitValue = (ulong) (hexDigit - 'a' + 10);
+                                       else
+                                               digitValue = (ulong) (hexDigit - 'A' + 10);
+
+                                       number = checked (number * 16 + digitValue);
+                               }
+                               else if (decimalPointFound) {
+                                       nDigits++;
+                                       // Allows decimal point as long as it's only 
+                                       // followed by zeroes.
+                                       if (s [pos++] != '0')
+                                               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) {
+                                               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)
+                               if (tryParse)
+                                       return false;
+                               else
+                                       throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
+
+                       if (AllowTrailingSign && !foundSign) {
+                               // Sign + Currency
+                               Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
+                               if (foundSign) {
+                                       if (AllowTrailingWhite)
+                                               pos = Int32.JumpOverWhite (pos, s, true);
+                                       if (AllowCurrencySymbol)
+                                               Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
+                               }
+                       }
+
+                       if (AllowCurrencySymbol && !foundCurrency) {
+                               // Currency + sign
+                               Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
+                               if (foundCurrency) {
+                                       if (AllowTrailingWhite)
+                                               pos = Int32.JumpOverWhite (pos, s, true);
+                                       if (!foundSign && AllowTrailingSign)
+                                               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++] != ')')
+                                       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 && 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;
+               }
+
+               [CLSCompliant (false)]
+               public static ulong Parse (string s, NumberStyles style, IFormatProvider fp) {
+                       ulong res;
+
+                       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;
                        }
-                       return val;
                }
+#endif
 
                public override string ToString ()
                {
-                       return ToString ("G", null);
+                       return ToString (null, null);
                }
 
-               public string ToString (IFormatProvider fp)
+               public string ToString (IFormatProvider provider)
                {
-                       return ToString ("G", fp);
+                       return ToString (null, provider);
                }
 
                public string ToString (string format)
@@ -93,30 +380,96 @@ namespace System {
                        return ToString (format, null);
                }
 
-               public string ToString (string format, IFormatProvider fp)
+               public string ToString (string format, IFormatProvider provider)
                {
-                       string fmt;
-                       NumberFormatInfo nfi;
-                       
-                       fmt = (format == null) ? "G" : format;
-                       
-                       if (fp == null)
-                               nfi = NumberFormatInfo.CurrentInfo;
-                       else {
-                               nfi = (NumberFormatInfo) fp.GetFormat (Type);
-                               
-                               if (nfi == null)
-                                       nfi = NumberFormatInfo.CurrentInfo;
-                       }
+                       NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 
-                       return IntegerFormatter.NumberToString (fmt, nfi, value);
+                       // use "G" when format is null or String.Empty
+                       if ((format == null) || (format.Length == 0))
+                               format = "G";
+
+                       return IntegerFormatter.NumberToString (format, nfi, m_value);
                }
 
                // =========== IConvertible Methods =========== //
-
                public TypeCode GetTypeCode ()
                {
                        return TypeCode.UInt64;
                }
+
+               bool IConvertible.ToBoolean (IFormatProvider provider)
+               {
+                       return System.Convert.ToBoolean (m_value);
+               }
+
+               byte IConvertible.ToByte (IFormatProvider provider)
+               {
+                       return System.Convert.ToByte (m_value);
+               }
+
+               char IConvertible.ToChar (IFormatProvider provider)
+               {
+                       return System.Convert.ToChar (m_value);
+               }
+
+               DateTime IConvertible.ToDateTime (IFormatProvider provider)
+               {
+                       return System.Convert.ToDateTime (m_value);
+               }
+
+               decimal IConvertible.ToDecimal (IFormatProvider provider)
+               {
+                       return System.Convert.ToDecimal (m_value);
+               }
+
+               double IConvertible.ToDouble (IFormatProvider provider)
+               {
+                       return System.Convert.ToDouble (m_value);
+               }
+
+               short IConvertible.ToInt16 (IFormatProvider provider)
+               {
+                       return System.Convert.ToInt16 (m_value);
+               }
+
+               int IConvertible.ToInt32 (IFormatProvider provider)
+               {
+                       return System.Convert.ToInt32 (m_value);
+               }
+
+               long IConvertible.ToInt64 (IFormatProvider provider)
+               {
+                       return System.Convert.ToInt64 (m_value);
+               }
+
+               sbyte IConvertible.ToSByte(IFormatProvider provider)
+               {
+                       return System.Convert.ToSByte (m_value);
+               }
+
+               float IConvertible.ToSingle (IFormatProvider provider)
+               {
+                       return System.Convert.ToSingle (m_value);
+               }
+
+               object IConvertible.ToType (Type conversionType, IFormatProvider provider)
+               {
+                       return System.Convert.ToType (m_value, conversionType, provider);
+               }
+
+               ushort IConvertible.ToUInt16 (IFormatProvider provider)
+               {
+                       return System.Convert.ToUInt16 (m_value);
+               }
+
+               uint IConvertible.ToUInt32 (IFormatProvider provider)
+               {
+                       return System.Convert.ToUInt32 (m_value);
+               }
+
+               ulong IConvertible.ToUInt64 (IFormatProvider provider)
+               {
+                       return m_value;
+               }
        }
 }