5 // Miguel de Icaza (miguel@ximian.com)
7 // (C) Ximian, Inc. http://www.ximian.com
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Runtime.InteropServices;
35 using System.Runtime.CompilerServices;
40 [ClassInterface (ClassInterfaceType.AutoDual)]
44 // Compares this object to the specified object.
45 // Returns true if they are equal, false otherwise.
47 public virtual bool Equals (object o)
53 // Compares two objects for equality
55 public static bool Equals (object a, object b)
60 if (a == null || b == null)
67 // Initializes a new instance of the object class.
81 // Returns a hashcode for this object. Each derived
82 // class should return a hash code that makes sense
83 // for that particular implementation of the object.
85 public virtual int GetHashCode () {
86 return InternalGetHashCode (this);
90 // Returns the Type associated with the object.
92 [MethodImplAttribute(MethodImplOptions.InternalCall)]
93 public extern Type GetType ();
96 // Shallow copy of the object.
98 [MethodImplAttribute(MethodImplOptions.InternalCall)]
99 protected extern object MemberwiseClone ();
102 // Returns a stringified representation of the object.
103 // This is not supposed to be used for user presentation,
104 // use Format() for that and IFormattable.
106 // ToString is mostly used for debugging purposes.
108 public virtual string ToString ()
110 return GetType().FullName;
114 // Tests whether a is equal to b.
115 // Can not figure out why this even exists
117 public static bool ReferenceEquals (object a, object b)
122 [MethodImplAttribute(MethodImplOptions.InternalCall)]
123 internal static extern int InternalGetHashCode (object o);
125 [MethodImplAttribute(MethodImplOptions.InternalCall)]
126 internal extern IntPtr obj_address ();
128 void FieldGetter (string typeName, string fieldName, ref object val)
133 void FieldSetter (string typeName, string fieldName, object val)