private void CompileBuiltinPredicateCall(PrologCodePredicate p)
{
AMPredicateSet pset = AMPredicateSet.Instance;
_generator.EmitBCall((IAbstractMachinePredicate)pset.CreatePredicate(p.Name, p.Arity));
if (_dictionary.InLastGoal)
{
if (_dictionary.GoalCount > 2)
{
_generator.Emit(OpCodes.Deallocate);
}
// Emit 'proceed'
_generator.EndProcedure();
}
}
public override void Execute(AbstractMachineState state)
{
AMPredicateSet pset = AMPredicateSet.Instance;
if (pset.IsValidPredicate(_builtinName))
{
IAbstractMachinePredicate p = (IAbstractMachinePredicate)pset.CreatePredicate(_builtinName);
// determine if p is a non-deterministic predicate
Type pType = p.GetType();
if (pType.IsInstanceOfType(new AbstractNonDeterministicPredicate()))
{
((AbstractNonDeterministicPredicate)p).IncrementCallID();
}
p.Execute(state);
}
}
public void assertz_1()
{
AMPredicateSet set = AMPredicateSet.Instance;
AbstractMachineState state = SetupMachine();
IAbstractMachinePredicate pred = set.CreatePredicate("assertz/1");
AbstractTerm X0 = (AbstractTerm)state["X0"];
X0.Assign(new ConstantTerm("it_is_sunny"));
Assert.AreEqual("assertz", pred.Name());
Assert.AreEqual(1, pred.Arity());
pred.Execute(state);
AMProgram program = (AMProgram)state.Program;
Assert.IsNotNull(program["it_is_sunny/0"]);
}