src/theory/shared_solver_distributed.h

   1 /*********************                                                        */
   2 /*! \file shared_solver_distributed.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Andrew Reynolds
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory) and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief Shared solver in the distributed architecture.
  13  **/
  14
  15 #include "cvc4_private.h"
  16
  17 #ifndef CVC4__THEORY__SHARED_SOLVER_DISTRIBUTED__H
  18 #define CVC4__THEORY__SHARED_SOLVER_DISTRIBUTED__H
  19
  20 #include "expr/node.h"
  21 #include "theory/shared_solver.h"
  22
  23 namespace CVC4 {
  24 namespace theory {
  25
  26 /**
  27  * The shared solver in the distributed architecture. This class uses the
  28  * SharedTermsDatabase for implementing the core methods of a shared solver.
  29  */
  30 class SharedSolverDistributed : public SharedSolver
  31 {
  32  public:
  33   SharedSolverDistributed(TheoryEngine& te, ProofNodeManager* pnm);
  34   virtual ~SharedSolverDistributed() {}
  35   //------------------------------------- initialization
  36   /**
  37    * Returns true if we need an equality engine, this has the same contract
  38    * as Theory::needsEqualityEngine.
  39    */
  40   bool needsEqualityEngine(theory::EeSetupInfo& esi) override;
  41   /** Set equality engine in the shared terms database */
  42   void setEqualityEngine(eq::EqualityEngine* ee) override;
  43   //------------------------------------- end initialization
  44   /** Assert equality to the shared terms database. */
  45   void assertSharedEquality(TNode equality,
  46                             bool polarity,
  47                             TNode reason) override;
  48   /**
  49    * Get equality status based on the equality engine of shared terms database
  50    */
  51   EqualityStatus getEqualityStatus(TNode a, TNode b) override;
  52   /** Explain literal that was propagated by a theory or using shared terms
  53    * database */
  54   TrustNode explain(TNode literal, TheoryId id) override;
  55
  56  protected:
  57   /** If t is an equality, add it as one that may be propagated */
  58   void preRegisterSharedInternal(TNode t) override;
  59 };
  60
  61 }  // namespace theory
  62 }  // namespace CVC4
  63
  64 #endif /* CVC4__THEORY__SHARED_SOLVER_DISTRIBUTED__H */