public override ITerm CApply(Unifier u)
{
if (ns.IsVar())
{
return(new Atom(this, u));
}
else
{
return(this);
}
}
public VarTerm VarToReplace(ITerm t, Unifier u)
{
VarTerm v = (VarTerm)t;
VarTerm deref = u.Deref(v);
if (deref.Equals(v))
{
Atom a = v.GetNS();
if (a.IsVar())
{
a = VarToReplace(a, u);
}
//UnnamedVar uv = useShortUnnamedVars ? new UnnamedVar(a) : UnnamedVar.Create(a, t.ToString());
UnnamedVar uv = UnnamedVar.Create(a, t.ToString());
if (deref.HasAnnot())
{
uv.SetAnnots(deref.GetAnnots().CloneLT());
uv.MakeVarsAnnon(u);
}
u.Bind(deref, v);
return(v);
}
else
{
Atom a = v.GetNS();
if (a.IsVar())
{
a = VarToReplace(a, u);
}
deref = (VarTerm)deref.CloneNS(a);
if (v.HasAnnot() && !deref.HasAnnot())
{
deref.SetAnnots(v.GetAnnots().CloneLT());
deref.MakeVarsAnnon(u);
}
return(deref);
}
}
