src/smt_util/nary_builder.h

   1 /*********************                                                        */
   2 /*! \file nary_builder.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Tim King, Morgan Deters
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2016 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
  19 #include "cvc4_private.h"
  20
  21 #pragma once
  22
  23 #include <vector>
  24 #include "expr/node.h"
  25
  26 namespace CVC4{
  27 namespace util {
  28
  29 class NaryBuilder {
  30 public:
  31   static Node mkAssoc(Kind k, const std::vector<Node>& children);
  32   static Node zeroArity(Kind k);
  33 };/* class NaryBuilder */
  34
  35 class RePairAssocCommutativeOperators {
  36 public:
  37   RePairAssocCommutativeOperators();
  38   ~RePairAssocCommutativeOperators();
  39
  40   Node rePairAssocCommutativeOperators(TNode n);
  41
  42   static bool isAssociateCommutative(Kind k);
  43
  44   size_t size() const;
  45   void clear();
  46 private:
  47   Node case_assoccomm(TNode n);
  48   Node case_other(TNode n);
  49
  50   typedef std::hash_map<Node, Node, NodeHashFunction> NodeMap;
  51   NodeMap d_cache;
  52 };/* class RePairAssocCommutativeOperators */
  53
  54 }/* util namespace */
  55 }/* CVC4 namespace */