/*********************                                                        */
/*! \file rewrite_engine.h
 ** \verbatim
 ** Top contributors (to current version):
 **   Morgan Deters, Andrew Reynolds, Tim King
 ** This file is part of the CVC4 project.
 ** Copyright (c) 2009-2017 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.\endverbatim
 **
 ** [[ Add lengthier description here ]]
 ** \todo document this file
**/

#include "cvc4_private.h"

#ifndef __CVC4__REWRITE_ENGINE_H
#define __CVC4__REWRITE_ENGINE_H

#include "context/cdchunk_list.h"
#include "context/context.h"
#include "context/context_mm.h"
#include "theory/quantifiers/trigger.h"
#include "theory/quantifiers/quant_conflict_find.h"
#include "theory/quantifiers_engine.h"

namespace CVC4 {
namespace theory {
namespace quantifiers {

class RewriteEngine : public QuantifiersModule
{
  typedef context::CDHashMap<Node, bool, NodeHashFunction> NodeBoolMap;
  typedef context::CDHashMap<Node, int, NodeHashFunction> NodeIntMap;
  typedef context::CDHashMap<Node, Node, NodeHashFunction> NodeNodeMap;
  std::vector< Node > d_rr_quant;
  std::vector< Node > d_priority_order;
  std::map< Node, Node > d_rr;
  /** explicitly provided patterns */
  std::map< Node, std::vector< inst::Trigger* > > d_rr_triggers;
  /** get the quantifer info object */
  std::map< Node, Node > d_qinfo_n;
  std::map< Node, QuantInfo > d_qinfo;
  double getPriority( Node f );
  bool d_needsSort;
  std::map< Node, std::map< Node, Node > > d_inst_const_node;
  Node getInstConstNode( Node n, Node q );
private:
  int checkRewriteRule( Node f, Theory::Effort e );
public:
  RewriteEngine( context::Context* c, QuantifiersEngine* qe );
  ~RewriteEngine() throw() {}

  bool needsCheck( Theory::Effort e );
  void check( Theory::Effort e, unsigned quant_e );
  void registerQuantifier( Node f );
  void assertNode( Node n );
  bool checkCompleteFor( Node q );
  /** Identify this module */
  std::string identify() const { return "RewriteEngine"; }
};

}
}
}

#endif