src/proof/unsat_core.h

   1 /*********************                                                        */
   2 /*! \file unsat_core.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Morgan Deters, Andrew Reynolds, Liana Hadarean
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2018 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 [[ Add one-line brief description here ]]
  13  **
  14  ** [[ Add lengthier description here ]]
  15  ** \todo document this file
  16  **/
  17
  18 #include "cvc4_public.h"
  19
  20 #ifndef __CVC4__UNSAT_CORE_H
  21 #define __CVC4__UNSAT_CORE_H
  22
  23 #include <iosfwd>
  24 #include <vector>
  25
  26 #include "expr/expr.h"
  27
  28 namespace CVC4 {
  29
  30 class SmtEngine;
  31 class UnsatCore;
  32
  33 std::ostream& operator<<(std::ostream& out, const UnsatCore& core) CVC4_PUBLIC;
  34
  35 class CVC4_PUBLIC UnsatCore {
  36   friend std::ostream& operator<<(std::ostream&, const UnsatCore&);
  37
  38   /** The SmtEngine we're associated with */
  39   SmtEngine* d_smt;
  40
  41   std::vector<Expr> d_core;
  42
  43   void initMessage() const;
  44
  45 public:
  46   UnsatCore() : d_smt(NULL) {}
  47
  48   UnsatCore(SmtEngine* smt, std::vector<Expr> core) : d_smt(smt), d_core(core) {
  49     initMessage();
  50   }
  51
  52   ~UnsatCore() {}
  53
  54   /** get the smt engine that this unsat core is hooked up to */
  55   SmtEngine* getSmtEngine() const { return d_smt; }
  56
  57   size_t size() const { return d_core.size(); }
  58
  59   typedef std::vector<Expr>::const_iterator iterator;
  60   typedef std::vector<Expr>::const_iterator const_iterator;
  61
  62   const_iterator begin() const;
  63   const_iterator end() const;
  64
  65   /** prints this UnsatCore object to the stream out.
  66   * We use the expression names stored in the SmtEngine d_smt
  67   */
  68   void toStream(std::ostream& out) const;
  69
  70 };/* class UnsatCore */
  71
  72 }/* CVC4 namespace */
  73
  74 #endif /* __CVC4__UNSAT_CORE_H */