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/********************* */
/*! \file constraints.h
** \verbatim
** Top contributors (to current version):
** Gereon Kremer
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Implements a container for CAD constraints.
**
** Implements a container for CAD constraints.
**/
#ifndef CVC4__THEORY__ARITH__NL__CAD__CONSTRAINTS_H
#define CVC4__THEORY__ARITH__NL__CAD__CONSTRAINTS_H
#include "util/real_algebraic_number.h"
#ifdef CVC4_POLY_IMP
#include <poly/polyxx.h>
#include <map>
#include <tuple>
#include <vector>
#include "../poly_conversion.h"
#include "expr/kind.h"
#include "expr/node_manager_attributes.h"
namespace CVC4 {
namespace theory {
namespace arith {
namespace nl {
namespace cad {
class Constraints
{
public:
/** Type alias for a list of constraints. */
using Constraint = std::tuple<poly::Polynomial, poly::SignCondition, Node>;
using ConstraintVector = std::vector<Constraint>;
private:
/**
* A list of constraints, each comprised of a polynomial and a sign
* condition.
*/
ConstraintVector mConstraints;
/**
* A mapping from CVC4 variables to poly variables.
*/
VariableMapper mVarMapper;
void sort_constraints();
public:
VariableMapper& var_mapper() { return mVarMapper; }
/**
* Add a constraint (represented by a polynomial and a sign condition) to the
* list of constraints.
*/
void add_constraint(const poly::Polynomial& lhs,
poly::SignCondition sc,
Node n);
/**
* Add a constraints (represented by a node) to the list of constraints.
* The given node can either be a negation (NOT) or a suitable relation symbol
* as checked by is_suitable_relation().
*/
void add_constraint(Node n);
/**
* Gives the list of added constraints.
*/
const ConstraintVector& get_constraints() const;
/**
* Remove all constraints.
*/
void reset();
};
} // namespace cad
} // namespace nl
} // namespace arith
} // namespace theory
} // namespace CVC4
#endif
#endif
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