Esempio n. 1
0
  ExecStatus
  Sequence<View,Val>::advise(Space& home, Advisor& _a, const Delta& d) {
    SupportAdvisor<View>& a = static_cast<SupportAdvisor<View>&>(_a);
    ExecStatus status = vvsamax.advise(home,x,s,q,a.i,d);
    if ( ES_NOFIX == vvsamin.advise(home,x,s,q,a.i,d) ) {
      status = ES_NOFIX;
    }

    if (!undecided(x[a.i],s)) {
      if (!x[a.i].assigned())
        x[a.i].cancel(home,a);

      if ( ES_NOFIX == status ) {
        return home.ES_NOFIX_DISPOSE(ac,a);
      } else {
        return home.ES_FIX_DISPOSE(ac,a);
      }
    }

    return status;
  }
Esempio n. 2
0
  ExecStatus
  Incremental<View>::advise(Space& home, Advisor& _a, const Delta& d) {
    SupportAdvisor& a = static_cast<SupportAdvisor&>(_a);
    ModEvent me = View::modevent(d);
    bool scheduled = !w_support.empty() || !w_remove.empty();

    if (x[a.i].any(d)) {
      ViewValues<View> vv(x[a.i]);
      for (int n = ts()->min; n <= ts()->max; n++) {
        if (vv() && (n == vv.val())) {
          ++vv;
          continue;
        }
        while (SupportEntry* s = support(a.i,n))
          remove_support(home, s->t, a.i, n);
      }
    } else {
      for (int n = x[a.i].min(d); n <= x[a.i].max(d); n++)
        while (SupportEntry* s = support(a.i,n))
          remove_support(home, s->t, a.i, n);
    }

    if (me == ME_INT_VAL) {
      --unassigned;
      // nothing to do or already scheduled
      // propagator is not subsumed since unassigned!=0
      if (((w_support.empty() && w_remove.empty()) || scheduled) &&
          (unassigned != 0))
        return home.ES_FIX_DISPOSE(ac,a);
      else
        return home.ES_NOFIX_DISPOSE(ac,a);
    } else if ((w_support.empty() && w_remove.empty()) || scheduled) {
      // nothing to do or already scheduled
      return ES_FIX;
    }
    return ES_NOFIX;
  }
Esempio n. 3
0
  ExecStatus
  ChannelBool<View>::advise(Space& home, Advisor& _a, const Delta& _d) {
    IndexAdvisor& a = static_cast<IndexAdvisor&>(_a);
    const SetDelta& d = static_cast<const SetDelta&>(_d);

    ModEvent me = View::modevent(d);
    int index = a.index();
    if ( (running && index == -1 && me != ME_SET_VAL)
         || (index == -1 && me == ME_SET_CARD) ) {
      return ES_OK;
    }

    if (index >= 0) {
      if (x[index].zero()) {
        SetDelta dummy;
        zeros.include(home, index, index, dummy);
      } else {
        assert(x[index].one());
        SetDelta dummy;
        ones.include(home, index, index, dummy);
      }
      return home.ES_NOFIX_DISPOSE( co, a);
    }

    if ((a.index() == -1) && Rel::testSetEventLB(me)) {
      if (d.glbAny()) {
        new (&delta)
          SetDelta(2,0, delta.lubMin(), delta.lubMax());
      } else {
        if (delta.glbMin() == 1 && delta.glbMax() == 0) {
          new (&delta)
            SetDelta(d.glbMin(), d.glbMax(),
                     delta.lubMin(), delta.lubMax());
        } else {
          if (delta.glbMin() != 2 || delta.glbMax() != 0) {
            if ((delta.glbMin() <= d.glbMin() && delta.glbMax() >= d.glbMin())
                ||
                (delta.glbMin() <= d.glbMax() && delta.glbMax() >= d.glbMax())
               ) {
                 new (&delta)
                   SetDelta(std::min(delta.glbMin(), d.glbMin()),
                            std::max(delta.glbMax(), d.glbMax()),
                            delta.lubMin(), delta.lubMax());
            } else {
              new (&delta)
                SetDelta(2, 0, delta.lubMin(), delta.lubMax());
            }
          }
        }
      }
    }
    if ((a.index() == -1) && Rel::testSetEventUB(me)) {
      if (d.lubAny()) {
        new (&delta)
          SetDelta(delta.glbMin(), delta.glbMax(), 2,0);
      } else {
        if (delta.lubMin() == 1 && delta.lubMax() == 0) {
          new (&delta)
            SetDelta(delta.glbMin(), delta.glbMax(),
                     d.lubMin(), d.lubMax());
        } else {
          if (delta.lubMin() != 2 || delta.lubMax() != 0) {
            if ((delta.lubMin() <= d.lubMin() && delta.lubMax() >= d.lubMin())
                ||
                (delta.lubMin() <= d.lubMax() && delta.lubMax() >= d.lubMax())
               ) {
                 new (&delta)
                   SetDelta(delta.lubMin(), delta.lubMax(),
                            std::min(delta.lubMin(), d.lubMin()),
                            std::max(delta.lubMax(), d.lubMax())
                            );
            } else {
              new (&delta)
                SetDelta(delta.glbMin(), delta.glbMax(), 2, 0);
            }
          }
        }
      }
    }

    if (y.assigned())
      return home.ES_NOFIX_DISPOSE( co, a);
    else
      return ES_NOFIX;
  }