mcs/class/Microsoft.JScript/Microsoft.JScript/Convert.cs

   1 //
   2 // Convert.cs:
   3 //
   4 // Author:
   5 //      Cesar Lopez Nataren (cesar@ciencias.unam.mx)
   6 //
   7 // (C) 2003, Cesar Lopez Nataren
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using Microsoft.JScript.Vsa;
  33
  34 namespace Microsoft.JScript {
  35
  36         public sealed class Convert {
  37
  38                 public static bool IsBadIndex (AST ast)
  39                 {
  40                         throw new NotImplementedException ();
  41                 }
  42
  43
  44                 public static double CheckIfDoubleIsInteger (double d)
  45                 {
  46                         if (d == Math.Round (d))
  47                                 return d;
  48                         throw new NotImplementedException ();
  49                 }
  50
  51
  52                 public static Single CheckIfSingleIsInteger (Single s)
  53                 {
  54                         if (s == Math.Round (s))
  55                                 return s;
  56                         throw new NotImplementedException ();
  57                 }
  58
  59
  60                 public static object Coerce (object value, object type)
  61                 {
  62                         throw new NotImplementedException ();
  63                 }
  64
  65
  66                 public static object CoerceT (object value, Type t, bool explicitOK)
  67                 {
  68                         throw new NotImplementedException ();
  69                 }
  70
  71
  72                 public static object Coerce2 (object value, TypeCode target,
  73                                               bool truncationPermitted)
  74                 {
  75                         throw new NotImplementedException ();
  76                 }
  77
  78                 public static void ThrowTypeMismatch (object val)
  79                 {
  80                         throw new NotImplementedException ();
  81                 }
  82
  83
  84                 public static bool ToBoolean (double d)
  85                 {
  86                         throw new NotImplementedException ();
  87                 }
  88
  89
  90                 public static bool ToBoolean (object value)
  91                 {
  92                         throw new NotImplementedException ();
  93                 }
  94
  95
  96                 public static bool ToBoolean (object value, bool explicitConversion)
  97                 {
  98                         return false;
  99                 }
 100
 101
 102                 public static object ToForInObject (object value, VsaEngine engine)
 103                 {
 104                         throw new NotImplementedException ();
 105                 }
 106
 107
 108                 public static int ToInt32 (object value)
 109                 {
 110                         throw new NotImplementedException ();
 111                 }
 112
 113
 114                 public static double ToNumber (object value)
 115                 {
 116                         throw new NotImplementedException ();
 117                 }
 118
 119
 120                 public static double ToNumber (string str)
 121                 {
 122                         throw new NotImplementedException ();
 123                 }
 124
 125
 126                 public static object ToNativeArray (object value, RuntimeTypeHandle handle)
 127                 {
 128                         throw new NotImplementedException ();
 129                 }
 130
 131
 132                 public static object ToObject (object value, VsaEngine engine)
 133                 {
 134                         throw new NotImplementedException ();
 135                 }
 136
 137
 138                 public static object ToObject2 (object value, VsaEngine engine)
 139                 {
 140                         throw new NotImplementedException ();
 141                 }
 142
 143
 144                 internal static string ToString (object obj)
 145                 {
 146                         return Convert.ToString (obj, true);
 147                 }
 148
 149                 public static string ToString (object value, bool explicitOK)
 150                 {
 151                         IConvertible ic = value as IConvertible;
 152                         TypeCode tc = Convert.GetTypeCode (value, ic);
 153
 154                         switch (tc) {
 155                         case TypeCode.DBNull:
 156                                 return "null";
 157
 158                         case TypeCode.String:
 159                         case TypeCode.Double:
 160                                 return ic.ToString (null);
 161
 162                         case TypeCode.Object:
 163                                 if (value is ArrayObject)
 164                                         return ArrayPrototype.toString (value);
 165                                 else if (value is BooleanObject)
 166                                         return BooleanPrototype.toString (value);
 167                                 else if (value is DateObject)
 168                                         return DatePrototype.toString (value);
 169                                 else if (value is ErrorObject)
 170                                         return ErrorPrototype.toString (value);
 171                                 else if (value is FunctionObject)
 172                                         return FunctionPrototype.toString (value);
 173                                 else if (value is NumberObject)
 174                                         return NumberPrototype.toString (value, 10);
 175                                 else if (value is ObjectPrototype)
 176                                         return ObjectPrototype.toString (value);
 177                                 else if (value is RegExpObject)
 178                                         return RegExpPrototype.toString (value);
 179                                 else if (value is StringObject)
 180                                         return StringPrototype.toString (value);
 181                                 throw new NotImplementedException ();
 182                         default:
 183                                 throw new NotImplementedException ();
 184                         }
 185                 }
 186
 187
 188                 public static string ToString (bool b)
 189                 {
 190                         return b ? "true" : "false";
 191                 }
 192
 193
 194                 public static string ToString (double d)
 195                 {
 196                         IConvertible ic = d as IConvertible;
 197                         return ic.ToString (null);
 198                 }
 199
 200                 //
 201                 // Utility methods
 202                 //
 203                 internal static TypeCode GetTypeCode (object obj, IConvertible ic)
 204                 {
 205                         if (obj == null)
 206                                 return TypeCode.Empty;
 207                         else if (ic == null)
 208                                 return TypeCode.Object;
 209                         else
 210                                 return  ic.GetTypeCode ();
 211                 }
 212         }
 213 }