public static IEnumerable<bool> protect_call_result(object G, object R)
{
{
Variable B = new Variable();
YP.Catch catchGoal1 = new YP.Catch(new Functor2(Atom.a("call_result", Atom.a("")), G, R), getDeclaringClass());
foreach (bool l2 in catchGoal1)
{
yield return false;
}
foreach (bool l2 in catchGoal1.unifyExceptionOrThrow(B))
{
foreach (bool l3 in extract_error(B, R))
{
yield return false;
}
}
}
}
public static IEnumerable<bool> exists(object arg1)
{
{
Variable P = new Variable();
Variable I = new Variable();
Variable List = new Variable();
Variable G = new Variable();
Variable x5 = new Variable();
foreach (bool l2 in YP.unify(arg1, new Functor2("/", P, I)))
{
foreach (bool l3 in make_list(I, List))
{
foreach (bool l4 in YP.univ(G, new ListPair(P, List)))
{
YP.set_prolog_flag(Atom.a("unknown"), Atom.a("fail"));
YP.Catch catchGoal1 = new YP.Catch(new Functor1("call", G), getDeclaringClass());
foreach (bool l5 in catchGoal1)
{
foreach (bool l6 in reset_flags())
{
yield return true;
yield break;
}
}
foreach (bool l5 in catchGoal1.unifyExceptionOrThrow(x5))
{
foreach (bool l6 in reset_flags())
{
yield return true;
yield break;
}
}
}
}
}
}
{
Variable P = new Variable();
Variable I = new Variable();
foreach (bool l2 in YP.unify(arg1, new Functor2("/", P, I)))
{
YP.write(Atom.a("Predicate: "));
YP.write(new Functor2("/", P, I));
YP.write(Atom.a(" not implemented"));
YP.nl();
foreach (bool l3 in reset_flags())
{
yield return false;
}
}
}
}