/*
This file is part of SECONDO.

Copyright (C) 2011, University in Hagen, Department of Computer Science,
Database Systems for New Applications.

SECONDO 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.

SECONDO 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 SECONDO; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include "val.h"
#include "../isint.h"
#include "../isreal.h"
#include "../isbool.h"
#include "../isstring.h"

namespace raster2
{
  ValueMapping valFuns[] =
  {
    valFun<int, istype_helper<int> >,
    valFun<double, istype_helper<double> >,
    valFun<char, istype_helper<char> >,
    valFun<std::string, istype_helper<std::string> >,
    0
  };

  int valSelectFun(ListExpr args)
  {
    int nSelection = -1;
    
    NList type(args);

    if(type.first().isSymbol(isint::BasicType()))
    {
      nSelection = 0;
    }
    
    else if(type.first().isSymbol(isreal::BasicType()))
    {
      nSelection = 1;
    }
    
    else if(type.first().isSymbol(isbool::BasicType()))
    {
      nSelection = 2;
    }
    
    else if(type.first().isSymbol(isstring::BasicType()))
    {
      nSelection = 3;
    }

    return nSelection;
  }

  ListExpr valTypeMap(ListExpr args)
  {
    ListExpr valTypeMapListExpr = NList::typeError("Expecting a isType.");
    
    NList types(args);
    
    if(types.first() == NList(isint::BasicType()))
    {
      valTypeMapListExpr = NList(sint::BasicType()).listExpr();
    }
    
    else if(types.first() == NList(isreal::BasicType()))
    {
      valTypeMapListExpr = NList(sreal::BasicType()).listExpr();
    }
    
    else if(types.first() == NList(isbool::BasicType()))
    {
      valTypeMapListExpr = NList(sbool::BasicType()).listExpr();
    }
    
    else if(types.first() == NList(isstring::BasicType()))
    {
      valTypeMapListExpr = NList(sstring::BasicType()).listExpr();
    }

    return valTypeMapListExpr;
  }
}