BooleVariable.h

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// -*- c++ -*-
//*****************************************************************************
//*****************************************************************************

#ifndef polybori_BooleVariable_h_
#define polybori_BooleVariable_h_

// include basic definitions
#include <polybori/pbori_defs.h>

// get BoolePolynomial's definition
#include <polybori/BooleEnv.h>
#include <polybori/BoolePolynomial.h>
#include <polybori/BooleSet.h>

BEGIN_NAMESPACE_PBORI

class BooleVariable:
  public CAuxTypes {

  typedef BooleVariable self;

 public:

  typedef BooleSet set_type;

  typedef BoolePolyRing ring_type;



  BooleVariable(idx_type idx, const ring_type& ring):
    m_poly( ring.variableDiagram(idx) ) {}

  BooleVariable(const ring_type& ring):
    m_poly( ring.variableDiagram(0) ) {}

  BooleVariable(const self& rhs):  
    m_poly(rhs.m_poly) {}

  operator const BoolePolynomial&() const { return m_poly; }

  idx_type index() const { return *m_poly.firstBegin(); }

  bool operator== (const self& other) const{
      return m_poly==other.m_poly;
  }

  // Nonequality check
  bool operator!= (const self& other) const{
        return m_poly!=other.m_poly;
  }

  hash_type stableHash() const{  return m_poly.stableHash(); }

  hash_type hash() const {  return m_poly.hash(); }

  set_type set() const { return m_poly.set(); }

  const ring_type& ring() const { return m_poly.ring(); } 

private:
  friend class BoolePolyRing;
  BooleVariable(const BoolePolynomial& poly):m_poly(poly){}

  BoolePolynomial m_poly;
};


inline BoolePolynomial
operator/(const BooleVariable& lhs, const BooleVariable& rhs) {
  return BoolePolynomial(BooleConstant(lhs == rhs), lhs.ring());
}

END_NAMESPACE_PBORI

#endif // of polybori_BooleVariable_h_

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