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//
// System.Object.cs
//
// Author:
// 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.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
namespace System {
[Serializable]
[ClassInterface (ClassInterfaceType.AutoDual)]
[ComVisible (true)]
public class Object {
// <summary>
// Compares this object to the specified object.
// Returns true if they are equal, false otherwise.
// </summary>
public virtual bool Equals (object obj)
{
return this == obj;
}
// <summary>
// Compares two objects for equality
// </summary>
public static bool Equals (object objA, object objB)
{
if (objA == objB)
return true;
if (objA == null || objB == null)
return false;
return objA.Equals (objB);
}
// <summary>
// Initializes a new instance of the object class.
// </summary>
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
public Object ()
{
}
// <summary>
// Object destructor.
// </summary>
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
~Object ()
{
}
// <summary>
// Returns a hashcode for this object. Each derived
// class should return a hash code that makes sense
// for that particular implementation of the object.
// </summary>
public virtual int GetHashCode () {
return InternalGetHashCode (this);
}
// <summary>
// Returns the Type associated with the object.
// </summary>
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern Type GetType ();
// <summary>
// Shallow copy of the object.
// </summary>
[MethodImplAttribute(MethodImplOptions.InternalCall)]
protected extern object MemberwiseClone ();
// <summary>
// Returns a stringified representation of the object.
// This is not supposed to be used for user presentation,
// use Format() for that and IFormattable.
//
// ToString is mostly used for debugging purposes.
// </summary>
public virtual string ToString ()
{
return GetType ().ToString ();
}
// <summary>
// Tests whether a is equal to b.
// Can not figure out why this even exists
// </summary>
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
public static bool ReferenceEquals (object objA, object objB)
{
return (objA == objB);
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int InternalGetHashCode (object o);
#pragma warning disable 169
void FieldGetter (string typeName, string fieldName, ref object val)
{
/* never called */
}
void FieldSetter (string typeName, string fieldName, object val)
{
/* never called */
}
#pragma warning restore 169
}
}
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