#ifndef __REGEX_HPP__
#define __REGEX_HPP__ 1

class RegEx {
public:
  virtual void basic() const = 0;
  virtual ~RegEx() {

  }
};

class Slovo : public RegEx {
public:
  Slovo(char c)
    :_c(c)
  {}
  void basic() const;
private:
  char _c;
};

class BinOp : public RegEx {
public:
  BinOp(RegEx *l, RegEx *d)
    :_levi(l), _desni(d)
  {}
  ~BinOp();
private:
  BinOp(const BinOp&);
  BinOp& operator=(const BinOp&);
protected:
  RegEx *_levi, *_desni;
};

class Konkatenacija : public BinOp {
public:
  Konkatenacija(RegEx *l , RegEx *d)
    :BinOp(l, d)
  {}
  void basic() const;
};

class Disjunkcija : public BinOp {
public:
  Disjunkcija(RegEx *l , RegEx *d)
    :BinOp(l, d)
  {}
  void basic() const;
};

class UnOp : public RegEx {
public:
  UnOp(RegEx *r)
    :_r(r)
  {}
  ~UnOp();
private:
  UnOp(const UnOp&);
  UnOp& operator=(const UnOp&);
protected:
  RegEx *_r;
};

class Klini : public UnOp {
public:
  Klini(RegEx *r)
    :UnOp(r)
  {}
  void basic() const;
};


#endif