token.cc

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/* Copyright (C) 2000-2012 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. */

#include "token.h"
#include "arts.h"
#include "messages.h"

String TokValTypeName[8] = {"String",
                            "Index",
                            "Numeric",
                            "ArrayOfString",
                            "ArrayOfIndex",
                            "Vector",
                            "Matrix",
                            "undefined"};

// Conversion functions to read TokVal for the 6 different types:

TokVal::operator String() const {
  assert(mtype == String_t);
  return ms;
}

TokVal::operator Index() const {
  assert(mtype == Index_t);
  return mn;
}

TokVal::operator Numeric() const {
  assert(mtype == Numeric_t);
  return mx;
}

TokVal::operator ArrayOfString() const {
  assert(mtype == Array_String_t);
  return msv;
}

TokVal::operator ArrayOfIndex() const {
  assert(mtype == Array_Index_t);
  return mnv;
}

TokVal::operator Vector() const {
  assert(mtype == Vector_t);
  return mxv;
}

TokVal::operator Matrix() const {
  assert(mtype == Matrix_t);
  return mm;
}

ostream& operator<<(ostream& os, const TokVal& a) {
  // This is needed for nice formating:
  bool first = true;

  switch (a.mtype) {
    case String_t:
      os << "\"" << a.ms << "\"";
      break;
    case Index_t:
      os << a.mn;
      break;
    case Numeric_t:
      os << a.mx;
      break;
    case Array_String_t:
      os << "[";
      for (Index i = 0; i < a.msv.nelem(); ++i) {
        if (first)
          first = false;
        else
          os << ",";
        os << "\"" << a.msv[i] << "\"";
      }
      os << "]";
      break;
    case Array_Index_t:
      os << "[";
      for (Index i = 0; i < a.mnv.nelem(); ++i) {
        if (first)
          first = false;
        else
          os << ",";

        os << a.mnv[i];
      }
      os << "]";
      break;
    case Vector_t:
      os << "[";
      for (Index i = 0; i < a.mxv.nelem(); ++i) {
        if (first)
          first = false;
        else
          os << ",";

        os << a.mxv[i];
      }
      os << "]";
      break;
    case Matrix_t:
      os << "[";
      for (Index i = 0; i < a.mm.nrows(); ++i) {
        for (Index j = 0; i < a.mm.ncols(); ++j) {
          if (first)
            first = false;
          else {
            if (j == 0)
              os << ";";
            else
              os << ",";
          }

          os << a.mm(i, j);
        }
      }
      os << "]";
      break;
    default:
      cerr << "Undefined token type.\n";
      arts_exit();
  }
  return os;
}

// main()
// {
//   String a("Test");
//   TokVal tv(a);

//   String b=tv;
//   cout << b << '\n';
//   Numeric c = 3.8;
//   TokVal tvtv(c);
//   tv = tvtv;
//   Numeric d = tv;
//   cout << d << '\n';
//   b = tv;                    // should cause an error because of wrong type
// }