token.h

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/* Copyright (C) 2000-2008 Stefan Buehler <sbuehler@ltu.se>

   This program 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, or (at your option) any
   later version.

   This program 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, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */

#ifndef token_h
#define token_h

#include "matpackI.h"
#include "array.h"
#include "mystring.h"

enum TokValType { String_t,    Index_t,    Numeric_t,
                  Array_String_t, Array_Index_t, Vector_t,
                  undefined_t };

class TokVal {
public:

  TokVal() : mtype(undefined_t), ms(), mn(-1), mx(0.), msv(), mnv(), mxv() { }

  TokVal(const char s[]) : mtype(String_t), ms(s), mn(-1), mx(0.),
                           msv(), mnv(), mxv() { }

  TokVal(const String& s) : mtype(String_t), ms(s), mn(-1), mx(0.),
                           msv(), mnv(), mxv() { }

  TokVal(Index n) : mtype(Index_t), ms(), mn(n), mx(0.),
                           msv(), mnv(), mxv() { }

  TokVal(Numeric x) : mtype(Numeric_t), ms(), mn(-1), mx(x),
                           msv(), mnv(), mxv() { }

  TokVal(ArrayOfString sv) : mtype(Array_String_t), ms(), mn(-1), mx(0.),
                           msv(sv), mnv(), mxv() { }

  TokVal(ArrayOfIndex nv) : mtype(Array_Index_t), ms(), mn(-1), mx(0.),
                           msv(), mnv(nv), mxv() { }

  TokVal(Vector xv) : mtype(Vector_t), ms(), mn(-1), mx(0.),
                           msv(), mnv(), mxv(xv) { }

  // Conversion functions to return TokVal for the 6 different types: 
  
  operator String() const;
  operator Index() const;
  operator Numeric() const;

  operator ArrayOfString() const;
  operator ArrayOfIndex() const;
  operator Vector() const;

  friend ostream& operator<<(ostream& os, const TokVal& a);

private:
  TokValType    mtype;
  String        ms;
  Index         mn;
  Numeric       mx;   
  ArrayOfString msv;
  ArrayOfIndex  mnv;
  Vector        mxv;
};


// typedef Array<TokValType> TokValTypeVector;
// typedef Array<TokVal>     TokValVector;



#endif  // token_h

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