token.h

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/* Copyright (C) 2000, 2001 Stefan Buehler <sbuehler@uni-bremen.de>
 
   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;
  }
 
  TokVal(const char s[]) {
    mtype = String_t;
    ms = s;
  }
 
  TokVal(const String& s) {
    mtype = String_t;
    ms = s;
  }
 
  TokVal(Index n) {
    mtype = Index_t;
    mn = n;
  }
 
  TokVal(Numeric x) {
    mtype = Numeric_t;
    mx = x;
  }
 
  TokVal(ArrayOfString sv) : msv(sv)
  {
    mtype = Array_String_t;
  }
 
  TokVal(ArrayOfIndex nv) : mnv(nv)
  {
    mtype = Array_Index_t;
  }
 
  TokVal(Vector xv) : mxv(xv)
  {
    mtype = Vector_t;
  }
 
  // 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