src/smt/smt_engine_scope.h

   1 /*********************                                                        */
   2 /*! \file smt_engine_scope.h
   3  ** \verbatim
   4  ** Original author: Morgan Deters
   5  ** Major contributors: none
   6  ** Minor contributors (to current version): none
   7  ** This file is part of the CVC4 project.
   8  ** Copyright (c) 2009-2014  New York University and The University of Iowa
   9  ** See the file COPYING in the top-level source directory for licensing
  10  ** information.\endverbatim
  11  **
  12  ** \brief [[ Add one-line brief description here ]]
  13  **
  14  ** [[ Add lengthier description here ]]
  15  ** \todo document this file
  16  **/
  17
  18 #include "cvc4_private.h"
  19
  20 #include "smt/smt_engine.h"
  21 #include "util/tls.h"
  22 #include "util/cvc4_assert.h"
  23 #include "expr/node_manager.h"
  24 #include "util/output.h"
  25 #include "proof/proof.h"
  26
  27 #pragma once
  28
  29 namespace CVC4 {
  30
  31 class ProofManager;
  32
  33 namespace smt {
  34
  35 extern CVC4_THREADLOCAL(SmtEngine*) s_smtEngine_current;
  36
  37 inline SmtEngine* currentSmtEngine() {
  38   Assert(s_smtEngine_current != NULL);
  39   return s_smtEngine_current;
  40 }
  41
  42 inline ProofManager* currentProofManager() {
  43 #ifdef CVC4_PROOF
  44   Assert(options::proof() || options::unsatCores());
  45   Assert(s_smtEngine_current != NULL);
  46   return s_smtEngine_current->d_proofManager;
  47 #else /* CVC4_PROOF */
  48   InternalError("proofs/unsat cores are not on, but ProofManager requested");
  49   return NULL;
  50 #endif /* CVC4_PROOF */
  51 }
  52
  53 class SmtScope : public NodeManagerScope {
  54   /** The old NodeManager, to be restored on destruction. */
  55   SmtEngine* d_oldSmtEngine;
  56
  57 public:
  58
  59   SmtScope(const SmtEngine* smt) :
  60     NodeManagerScope(smt->d_nodeManager),
  61     d_oldSmtEngine(s_smtEngine_current) {
  62     Assert(smt != NULL);
  63     s_smtEngine_current = const_cast<SmtEngine*>(smt);
  64     Debug("current") << "smt scope: " << s_smtEngine_current << std::endl;
  65   }
  66
  67   ~SmtScope() {
  68     s_smtEngine_current = d_oldSmtEngine;
  69     Debug("current") << "smt scope: returning to " << s_smtEngine_current << std::endl;
  70   }
  71 };/* class SmtScope */
  72
  73 }/* CVC4::smt namespace */
  74 }/* CVC4 namespace */