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#include <map>
#include <set>
#include "expr/kind.h"
#include "expr/node.h"
#include "util/Assert.h"
#include "theory/arith/arith_utilities.h"
namespace CVC4 {
namespace theory {
namespace arith {
inline const Rational& rightHandRational(TNode ineq){
Assert(ineq.getKind() == kind::LEQ
|| ineq.getKind() == kind::GEQ
|| ineq.getKind() == kind::EQUAL);
TNode righthand = ineq[1];
Assert(righthand.getKind() == kind::CONST_RATIONAL);
return righthand.getConst<Rational>();
}
class BoundValueEntry {
private:
const Rational& value;
TNode d_leq, d_geq;
BoundValueEntry(const Rational& v, TNode l, TNode g):
value(v),
d_leq(l),
d_geq(g)
{}
public:
Node getLeq() const{
Assert(hasLeq());
return d_leq;
}
Node getGeq() const{
Assert(hasGeq());
return d_geq;
}
static BoundValueEntry mkFromLeq(TNode leq){
Assert(leq.getKind() == kind::LEQ);
return BoundValueEntry(rightHandRational(leq), leq, TNode::null());
}
static BoundValueEntry mkFromGeq(TNode geq){
Assert(geq.getKind() == kind::GEQ);
return BoundValueEntry(rightHandRational(geq), TNode::null(), geq);
}
void addLeq(TNode leq){
Assert(leq.getKind() == kind::LEQ);
Assert(rightHandRational(leq) == getValue());
// [MGD] With context-dependent pre-registration, we could get the
// same one twice
Assert(!hasLeq() || d_leq == leq);
d_leq = leq;
}
void addGeq(TNode geq){
Assert(geq.getKind() == kind::GEQ);
Assert(rightHandRational(geq) == getValue());
// [MGD] With context-dependent pre-registration, we could get the
// same one twice
Assert(!hasGeq() || d_geq == geq);
d_geq = geq;
}
bool hasGeq() const { return d_geq != TNode::null(); }
bool hasLeq() const { return d_leq != TNode::null(); }
const Rational& getValue() const{
return value;
}
bool operator<(const BoundValueEntry& other){
return value < other.value;
}
};
typedef std::map<Rational, BoundValueEntry> BoundValueSet;
typedef std::set<TNode, RightHandRationalLT> EqualValueSet;
// struct SetCleanupStrategy{
// static void cleanup(OrderedSet* l){
// Debug("arithgc") << "cleaning up " << l << "\n";
// delete l;
// }
// };
}/* CVC4::theory::arith namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
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