Potassco::Lit_t add(Literal lit) {
uint32 word = lit.id() / 32;
uint32 bit = lit.id() & 31;
if (word >= map.size()) { map.resize(word + 1, 0); }
if (!test_bit(map[word], bit)) {
vec.push_back(lit);
set_bit(map[word], bit);
}
return encodeLit(lit);
}
void pushTrail(Literal p) {
trail_.push_back(encodeLit(p));
}
ClingoAssignment::Lit_t ClingoAssignment::decision(uint32_t dl) const {
POTASSCO_REQUIRE(dl <= solver_->decisionLevel(), "Invalid decision level");
return encodeLit(dl ? solver_->decision(dl) : lit_true());
}
void ClingoPropagatorInit::removeWatch(Literal lit) {
changes_.push_back(Change(encodeLit(lit), RemoveWatch));
}
void ClingoPropagatorInit::removeWatch(uint32 sId, Literal lit) {
POTASSCO_REQUIRE(sId < 64, "Invalid solver id");
changes_.push_back(Change(encodeLit(lit), RemoveWatch, sId));
}
Potassco::Lit_t ClingoPropagatorInit::addWatch(uint32 sId, Literal lit) {
POTASSCO_REQUIRE(sId < 64, "Invalid solver id");
changes_.push_back(Change(encodeLit(lit), AddWatch, sId));
return changes_.back().lit;
}
Potassco::Lit_t ClingoPropagatorInit::addWatch(Literal lit) {
changes_.push_back(Change(encodeLit(lit), AddWatch));
return changes_.back().lit;
}
Constraint::PropResult ClingoPropagator::propagate(Solver& s, Literal p, uint32&) {
registerUndo(s);
trail_.push_back(encodeLit(p));
return PropResult(true, true);
}
bool ClingoPropagator::inTrail(Literal p) const {
return std::find(trail_.begin(), trail_.end(), encodeLit(p)) != trail_.end();
}
Potassco::Lit_t ClingoPropagator::Control::addVariable() {
POTASSCO_REQUIRE(!assignment_.hasConflict(), "Invalid addVariable() on conflicting assignment");
ScopedUnlock unlocked(lock(), ctx_);
return encodeLit(posLit(solver().pushAuxVar()));
}
