Segnal.h

// -*-c++-*-
//----------------------------------------------------------------------------
//  xc utils library; general purpose classes and functions.
//
//  Copyright (C)  Luis C. Pérez Tato
//
//  XC utils is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or 
//  (at your option) any later version.
//
//  This software is distributed in the hope that it will be useful, but 
//  WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.  
//
// You should have received a copy of the GNU General Public License 
// along with this program.
// If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------------
//Segnal.h

#ifndef SEGNAL_H
#define SEGNAL_H

#include <string>

enum Clase { fin_exp,
             parent_izdo, parent_dcho,
             operando,
             op_unitario, op_binario};

class Variable;
class Lexico;


class Segnal
  {
  public:
    inline Segnal(void) {}
    inline virtual ~Segnal(void) {}
    virtual const std::string &getName(void) const= 0;
    virtual Clase GetClase(void) const= 0;
    virtual const double &GetValor(const double &v1= 0.0, const double &v2= 0.0) const= 0;
    inline virtual int GetPrioridad(void) const
      { return -1; }
    const std::string &StrClase(void) const;
    virtual std::ostream &Imprime(std::ostream &os) const;
    inline virtual bool EqualTo(const double &) const
      { return false; }
    friend int operator<(const Segnal &s1,const Segnal &s2)
      { return (s1.getName() < s2.getName()); }
    friend int operator==(const Segnal &s,const double &d)
      { return s.EqualTo(d); }
    friend int operator==(const double &d,const Segnal &s)
      { return (s == d); }
  };

std::ostream &operator<<(std::ostream &, const Segnal &);


#endif