data_map.h

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//Copyright 2009 Thomas A Caswell
//tcaswell@uchicago.edu
//http://jfi.uchicago.edu/~tcaswell
//
//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 3 of the License, 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, see <http://www.gnu.org/licenses>.
//
//Additional permission under GNU GPL version 3 section 7
//
//If you modify this Program, or any covered work, by linking or
//combining it with MATLAB (or a modified version of that library),
//containing parts covered by the terms of MATLAB User License, the
//licensors of this Program grant you additional permission to convey
//the resulting work.

#ifndef DATA_MAP
#define DATA_MAP

#include <map>
#include <stdexcept>
#include "enum_utils.h"

namespace utilities
{
class Data_map
{
public:
  Data_map(const std::map<utilities::D_TYPE,int>& in);

  Data_map();
  ~Data_map(){}
  int operator()(utilities::D_TYPE in)const
  {
    if( in == D_SENTRY)
      throw std::runtime_error("D_SENTRY is not a valid data type");
    
    return data_layout_[in];
  }
    
  int operator()(int in)const
  {
    // if(in>=D_SENTRY)
    //   throw runtime_error("index out of range");

    return data_layout_[in];
  }
  void set_lookup(D_TYPE dt,int loc);
  
  
private:
  int data_layout_[D_SENTRY];
};


  
template<typename _CharT, class _Traits>
std::basic_ostream<_CharT, _Traits>&
operator<<(std::basic_ostream<_CharT, _Traits>& __os, const Data_map& in)
{

    
  std::basic_ostringstream<_CharT, _Traits> s;
  s.flags(__os.flags());
  s.imbue(__os.getloc());
  s.precision(__os.precision());

    
  s << '(' ;
  s<< in(0)  ;
  for(int j = 1;j<D_SENTRY;++j)
    s<< ','<<in(j)  ;
  s << ')';

  return __os << s.str();
}
}




#endif