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/* -*- C++ -*-
 * apxx_var.hh
 *
 * APRON Library / C++ class wrappers
 *
 * Copyright (C) Antoine Mine' 2007
 *
 */
/* This file is part of the APRON Library, released under LGPL license
   with an exception allowing the redistribution of statically linked
   executables.
  
   Please read the COPYING file packaged in the distribution.
*/

#ifndef __APXX_VAR_HH
#define __APXX_VAR_HH

#include "ap_var.h"


namespace apron {


/* ================================= */
/* var                               */
/* ================================= */


class var {
  
protected:
  ap_var_t v; 
  
public:
  
  /* constructors */
  /* ============ */


  var(const void* x);
  
  var(const std::string& x);
  
  var(const var& x);



  /* destructor */
  /* ========== */

  
  ~var();
  


  /* assignments */
  /* =========== */


  var& operator=(const var& x);
  
  var& operator=(const std::string& x);
  
  var& operator=(const void* x);
  


  /* conversions */
  /* =========== */


  operator char*() const;

  operator std::string() const;



  /* comparisons */
  /* =========== */


  friend int  compare(const var& x, const var& y);

  friend bool operator==(const var& x, const var& y);

  friend bool operator!=(const var& x, const var& y);
 
  friend bool operator>=(const var& x, const var& y);

  friend bool operator<=(const var& x, const var& y);

  friend bool operator>(const var& x, const var& y);

  friend bool operator<(const var& x, const var& y);



  /* print */
  /* ===== */


  friend std::ostream& operator<< (std::ostream& os, const var& s);

  void print(FILE* stream=stdout) const;



  /* C-level compatibility */
  /* ===================== */


  const ap_var_t& get_ap_var_t() const;

  ap_var_t& get_ap_var_t();


};

#include "apxx_var_inline.hh"

}


#endif /* __APXX_VAR_HH */