Example #1
0
File: Term.java Project: rla/llj
  @Predicate(name = "arg", arity = 3)
  public AbstractGoal arg(JavaCallGoal goal) throws Exception {
    // FIXME check overflow???
    int arg = (int) goal.getLongArg(0);
    RuntimeStruct term = goal.getStructArg(1);

    return goal.unify(2, term.data[arg]);
  }
Example #2
0
File: Term.java Project: rla/llj
  @Predicate(name = "functor_ioo", arity = 3)
  public AbstractGoal functor_ioo(JavaCallGoal goal) throws Exception {
    RuntimeStruct struct = goal.getStructArg(0);
    Integer arity = struct.data.length - 1;
    String functor = (String) struct.data[0];

    if (goal.Q.unify(goal.getArg(1), functor) && goal.Q.unify(goal.getArg(2), arity)) {
      return goal.G;
    } else {
      return goal.Q.backtrack();
    }
  }