booldatum.h

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/*
 *  booldatum.h
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  NEST 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 NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef BOOLDATUM_H
#define BOOLDATUM_H

#include <string>
#include "genericdatum.h"
#include "allocator.h"
#include "interpret.h"


class Name;
class Token;

class BoolDatum: public GenericDatum<bool,&SLIInterpreter::Booltype>
{
 protected:
  static sli::pool memory;

 private:
  Datum *clone(void) const
    {
        return new BoolDatum(*this);    
    }
    
public:
  static const char* true_string;
  static const char* false_string;

  BoolDatum(): GenericDatum<bool,&SLIInterpreter::Booltype>(){}
  BoolDatum(const BoolDatum& val):GenericDatum<bool,&SLIInterpreter::Booltype>(val){}
  BoolDatum(bool val):GenericDatum<bool,&SLIInterpreter::Booltype>(val){}
  BoolDatum(const Name&);

  operator bool() const
    { return d; }

  operator Name() const;

  operator std::string() const;

  void  input_form(std::ostream &) const;
  void  print(std::ostream &) const;
  void  pprint(std::ostream &) const;

  static void * operator new(size_t size);

  static void operator delete(void *p, size_t size);

};

#endif