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/********************* */
/*! \file theory_bags.h
** \verbatim
** Top contributors (to current version):
** Mudathir Mohamed
** This file is part of the CVC4 project.
** Copyright (c) 2009-2021 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 Bags theory.
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__BAGS__THEORY_BAGS_H
#define CVC4__THEORY__BAGS__THEORY_BAGS_H
#include <memory>
#include "theory/bags/bag_solver.h"
#include "theory/bags/bags_rewriter.h"
#include "theory/bags/bags_statistics.h"
#include "theory/bags/inference_generator.h"
#include "theory/bags/inference_manager.h"
#include "theory/bags/solver_state.h"
#include "theory/theory.h"
#include "theory/theory_eq_notify.h"
#include "theory/uf/equality_engine.h"
namespace CVC4 {
namespace theory {
namespace bags {
class TheoryBags : public Theory
{
public:
/** Constructs a new instance of TheoryBags w.r.t. the provided contexts. */
TheoryBags(context::Context* c,
context::UserContext* u,
OutputChannel& out,
Valuation valuation,
const LogicInfo& logicInfo,
ProofNodeManager* pnm);
~TheoryBags() override;
//--------------------------------- initialization
/** get the official theory rewriter of this theory */
TheoryRewriter* getTheoryRewriter() override;
/**
* Returns true if we need an equality engine. If so, we initialize the
* information regarding how it should be setup. For details, see the
* documentation in Theory::needsEqualityEngine.
*/
bool needsEqualityEngine(EeSetupInfo& esi) override;
/** finish initialization */
void finishInit() override;
//--------------------------------- end initialization
//--------------------------------- standard check
/** Post-check, called after the fact queue of the theory is processed. */
void postCheck(Effort effort) override;
/** Notify fact */
void notifyFact(TNode atom, bool pol, TNode fact, bool isInternal) override;
//--------------------------------- end standard check
/** Collect model values in m based on the relevant terms given by termSet */
bool collectModelValues(TheoryModel* m,
const std::set<Node>& termSet) override;
TrustNode explain(TNode) override;
Node getModelValue(TNode) override;
std::string identify() const override { return "THEORY_BAGS"; }
void preRegisterTerm(TNode n) override;
TrustNode expandDefinition(Node n) override;
void presolve() override;
private:
/** Functions to handle callbacks from equality engine */
class NotifyClass : public TheoryEqNotifyClass
{
public:
NotifyClass(TheoryBags& theory, TheoryInferenceManager& inferenceManager)
: TheoryEqNotifyClass(inferenceManager), d_theory(theory)
{
}
void eqNotifyNewClass(TNode n) override;
void eqNotifyMerge(TNode n1, TNode n2) override;
void eqNotifyDisequal(TNode n1, TNode n2, TNode reason) override;
private:
TheoryBags& d_theory;
};
/** The state of the bags solver at full effort */
SolverState d_state;
/** The inference manager */
InferenceManager d_im;
/** The inference generator */
InferenceGenerator d_ig;
/** Instance of the above class */
NotifyClass d_notify;
/** Statistics for the theory of bags. */
BagsStatistics d_statistics;
/** The theory rewriter for this theory. */
BagsRewriter d_rewriter;
/** The term registry for this theory */
TermRegistry d_termReg;
/** the main solver for bags */
BagSolver d_solver;
void eqNotifyNewClass(TNode n);
void eqNotifyMerge(TNode n1, TNode n2);
void eqNotifyDisequal(TNode t1, TNode t2, TNode reason);
}; /* class TheoryBags */
} // namespace bags
} // namespace theory
} // namespace CVC4
#endif /* CVC4__THEORY__BAGS__THEORY_BAGS_H */
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