public sealed override bool Equals(object obj)
{
if ((obj == null) || !Delegate.InternalEqualTypes(this, obj))
{
return(false);
}
MulticastDelegate d = obj as MulticastDelegate;
if (d == null)
{
return(false);
}
if (this._invocationCount != IntPtr.Zero)
{
if (this._invocationList == null)
{
if (!this.IsUnmanagedFunctionPtr())
{
return(base.Equals(obj));
}
if (!d.IsUnmanagedFunctionPtr())
{
return(false);
}
if (base._methodPtr != d._methodPtr)
{
return(false);
}
if (base.GetUnmanagedCallSite() != d.GetUnmanagedCallSite())
{
return(false);
}
return(true);
}
if (this._invocationList is Delegate)
{
return(this._invocationList.Equals(obj));
}
return(this.InvocationListEquals(d));
}
if (this._invocationList != null)
{
if (!this._invocationList.Equals(d._invocationList))
{
return(false);
}
return(base.Equals(d));
}
if ((d._invocationList == null) && !(d._invocationCount != IntPtr.Zero))
{
return(base.Equals(d));
}
return((d._invocationList is Delegate) && (d._invocationList as Delegate).Equals(this));
}
// equals returns true IIF the delegate is not null and has the
// same target, method and invocation list as this object
public override sealed bool Equals(Object obj)
{
if (obj == null || !InternalEqualTypes(this, obj))
{
return(false);
}
MulticastDelegate d = obj as MulticastDelegate;
if (d == null)
{
return(false);
}
if (_invocationCount != (IntPtr)0)
{
// there are 4 kind of delegate kinds that fall into this bucket
// 1- Multicast (_invocationList is Object[])
// 2- Secure (_invocationList is Delegate)
// 3- Unmanaged FntPtr (_invocationList == null)
// 4- Open virtual (_invocationCount == MethodDesc of target)
if (_invocationList == null)
{
if (IsUnmanagedFunctionPtr())
{
if (!d.IsUnmanagedFunctionPtr())
{
return(false);
}
if (_methodPtr != d._methodPtr)
{
return(false);
}
if (GetUnmanagedCallSite() != d.GetUnmanagedCallSite())
{
return(false);
}
return(true);
}
return(base.Equals(obj));
}
else
{
if ((_invocationList as Delegate) != null)
{
// this is a secure delegate so we need to unwrap and check the inner one
return(_invocationList.Equals(obj));
}
else
{
BCLDebug.Assert((_invocationList as Object[]) != null, "empty invocation list on multicast delegate");
return(InvocationListEquals(d));
}
}
}
else
{
// among the several kind of delegates falling into this bucket one has got a non
// empty _invocationList (open static with special sig)
// to be equals we need to check that _invocationList matches (both null is fine)
// and call the base.Equals()
if (_invocationList != null)
{
if (!_invocationList.Equals(d._invocationList))
{
return(false);
}
return(base.Equals(d));
}
// now we know 'this' is not a special one, so we can work out what the other is
if (d._invocationList != null || d._invocationCount != (IntPtr)0)
{
if ((d._invocationList as Delegate) != null)
{
// this is a secure delegate so we need to unwrap and check the inner one
return((d._invocationList as Delegate).Equals(this));
}
return(false);
}
// now we can call on the base
return(base.Equals(d));
}
}