/**
* Determine if two lists are equal. Lists are equal if they have the same
* arity and all of the elements are equal.
*
* @param o
* the list to compare to.
*
* @return true if the lists have the same arity and all the elements are
* equal.
*/
public override bool Equals(Object o)
{
/*
* Be careful to use methods even for "this", so that equals work also
* for sublists
*/
if (!(o is OtpErlangList))
{
return(false);
}
OtpErlangList l = (OtpErlangList)o;
int a = arity();
if (a != l.arity())
{
return(false);
}
for (int i = 0; i < a; i++)
{
if (!elementAt(i).Equals(l.elementAt(i)))
{
return(false); // early exit
}
}
OtpErlangObject otherTail = l.getLastTail();
if (getLastTail() == null && otherTail == null)
{
return(true);
}
if (getLastTail() == null)
{
return(false);
}
return(getLastTail().Equals(l.getLastTail()));
}
public override OtpErlangObject getLastTail()
{
return(parent.getLastTail());
}