public WriteWork(PBTerm[] args, WriteWork next)
{
// assert args != null;
// assert args.length > 0;
i = 0;
this.args = args;
this.next = next;
}
/// <summary> Pop exhausted stack entries and return the resulting stack (which may
/// be null).
/// </summary>
internal virtual WriteWork prune()
{
WriteWork tmp = this;
while (tmp != null && tmp.i == tmp.args.Length)
{
tmp = tmp.Next;
}
return(tmp);
}
internal virtual void writeTerm(PBTerm term)
{
WriteWork stack = new WriteWork(new [] { term }, null);
do
{
PBTerm t = stack.bump();
if (t != null)
{
PBTerm[] args = t.fastWritePrefix(this);
if (args.Length > 0)
{
stack = stack.push(args);
}
}
else
{
// top-most entry exhausted, pop it.
stack = stack.prune();
}
} while (stack != null);
}