public IList GetPredicates(StringObject atom)
{
ArrayList result = new ArrayList();
foreach (PrologObject fact in this.facts)
{
if (IsPredicate(fact, atom))
{
result.Add(fact);
}
}
return(result);
}
private bool IsPredicate(PrologObject fact, StringObject atom)
{
if (fact.Equals(atom))
{
return(true);
}
if (!(fact is StructureObject))
{
return(false);
}
StructureObject st = ((StructureObject)(fact));
if (st.Functor.Equals(atom))
{
return(true);
}
if (!(st.Functor == IfPrimitive.GetInstance()))
{
return(false);
}
fact = st.Parameters[0];
if (fact.Equals(atom))
{
return(true);
}
if (!(fact is StructureObject))
{
return(false);
}
st = (StructureObject)fact;
if (st.Functor.Equals(atom))
{
return(true);
}
return(false);
}
public IList GetPredicates(StringObject atom)
{
return(facts.GetPredicates(atom));
}