mcs/class/Microsoft.JScript/Microsoft.JScript/ObjectPrototype.cs

   1 //
   2 // ObjectPrototype.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 System.Reflection;
  33
  34 namespace Microsoft.JScript {
  35
  36         public class ObjectPrototype : JSObject {
  37
  38                 internal ObjectPrototype ()
  39                 {
  40                 }
  41
  42                 internal static ObjectPrototype Proto = new ObjectPrototype ();
  43
  44                 public static ObjectConstructor constructor {
  45                         get { return ObjectConstructor.Ctr; }
  46                 }
  47
  48                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_hasOwnProperty)]
  49                 public static bool hasOwnProperty (object thisObj, object name)
  50                 {
  51                         ScriptObject obj = thisObj as ScriptObject;
  52                         if (obj == null)
  53                                 return false;
  54                         string key = Convert.ToString (name);
  55                         return LateBinding.DirectHasObjectProperty (obj, key);
  56                 }
  57
  58                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_isPrototypeOf)]
  59                 public static bool isPrototypeOf (object thisObj, object obj)
  60                 {
  61                         throw new NotImplementedException ();
  62                 }
  63
  64                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_propertyIsEnumerable)]
  65                 public static bool propertyIsEnumerable (object thisObj, object name)
  66                 {
  67                         if (thisObj == null || name == null)
  68                                 return false;
  69                         // TODO: Implement me.
  70                         // Type type = thisObj.GetType ();
  71                         // FieldInfo res = type.GetField (Convert.ToString (name));
  72                         return true;
  73                 }
  74
  75                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_toLocaleString)]
  76                 public static string toLocaleString (object thisObj)
  77                 {
  78                         return toString (thisObj);
  79                 }
  80
  81                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_toString)]
  82                 public static string toString (object thisObj)
  83                 {
  84                         if (thisObj is ScriptObject) {
  85                                 ScriptObject obj = (ScriptObject) thisObj;
  86                                 return "[object " + obj.ClassName + "]";
  87                         } else
  88                                 throw new NotImplementedException ();
  89                 }
  90
  91                 [JSFunctionAttribute (JSFunctionAttributeEnum.HasThisObject, JSBuiltin.Object_valueOf)]
  92                 public static object valueOf (object thisObj)
  93                 {
  94                         return thisObj;
  95                 }
  96
  97                 internal static object smartToString (JSObject thisObj)
  98                 {
  99                         JSObject obj = (JSObject) thisObj;
 100                         object val = obj.GetDefaultValue (typeof (string), true);
 101                         if (val == thisObj)
 102                                 return toString (thisObj);
 103                         else
 104                                 return Convert.ToString (val);
 105                 }
 106         }
 107 }