/******************************************************************************
 * Top contributors (to current version):
 *   Tim King
 *
 * This file is part of the cvc5 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.
 * ****************************************************************************
 *
 * [[ Add one-line brief description here ]]
 *
 * [[ Add lengthier description here ]]
 * \todo document this file
 */

#include "cvc5_private.h"

#pragma once

#include <unordered_map>
#include <vector>

#include "expr/node.h"

namespace cvc5 {
namespace util {

class NaryBuilder {
public:
  static Node mkAssoc(Kind k, const std::vector<Node>& children);
  static Node zeroArity(Kind k);
};/* class NaryBuilder */

class RePairAssocCommutativeOperators {
public:
  RePairAssocCommutativeOperators();
  ~RePairAssocCommutativeOperators();

  Node rePairAssocCommutativeOperators(TNode n);

  static bool isAssociateCommutative(Kind k);

  size_t size() const;
  void clear();
private:
  Node case_assoccomm(TNode n);
  Node case_other(TNode n);

  typedef std::unordered_map<Node, Node> NodeMap;
  NodeMap d_cache;
};/* class RePairAssocCommutativeOperators */

}/* util namespace */
}  // namespace cvc5