public override ITerm CApply(Unifier u)
{
ITerm v = u.Get(cyclicVar);
u.Remove(cyclicVar);
ITerm r = new CyclicTerm(this, cyclicVar.Clone() as VarTerm, u);
if (v != null)
{
u.Bind(cyclicVar, v);
}
return(r);
}
public override ITerm CApply(Unifier u)
{
if (u != null)
{
ITerm vl = u.Get(this);
if (vl != null)
{
if (!vl.IsCyclicTerm() && vl.HasVar(this, u))
{
u.Remove(this);
ITerm tempVl = vl.CApply(u);
u.Bind(this, vl);
CyclicTerm ct = new CyclicTerm(tempVl as Literal, this);
Unifier renamedVars = new Unifier();
ct.MakeVarsAnnon(renamedVars);
renamedVars.Remove(this);
u.Compose(renamedVars);
vl = ct;
}
vl = vl.CApply(u);
if (vl.IsLiteral())
{
if (GetNS() != Literal.DefaultNS)
{
vl = (vl.CloneNS(GetNS().CApply(u) as Atom) as Literal);
}
if (Negated())
{
((Literal)vl).SetNegated(Literal.LNeg);
}
}
if (vl.IsLiteral() && this.HasAnnot())
{
vl = ((Literal)vl).ForceFullLiteralImpl().AddAnnots((IListTerm)this.GetAnnots().CApply(u));
}
return(vl);
}
}
return((ITerm)Clone()); // Como uso el Clone de C# lo que clono son object que luego hay que castear...
}
public override bool HasVar(VarTerm t, Unifier u)
{
if (Equals(t))
{
return(true);
}
if (u != null)
{
ITerm vl = u.Get(this);
if (vl != null)
{
try
{
u.Remove(this);
return(vl.HasVar(t, u));
}
finally
{
u.Bind(this, vl);
}
}
}
return(false);
}