/* Copyright (c) 1997-2010
   Ewgenij Gawrilow, Michael Joswig (Technische Universitaet Darmstadt, Germany)
   http://www.polymake.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: http://www.gnu.org/licenses/gpl.txt.

   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.
--------------------------------------------------------------------------------
   $Project: polymake $$Id: Ring.cc 9991 2010-12-12 23:36:28Z gawrilow $
*/

#include "polymake/Ring.h"
#include <sstream>

namespace pm {

int* Ring_base::find_by_names(repo_by_names_type& repo_by_names, const Array<std::string>& names)
{
   int& id=repo_by_names[names];
   if (!id) {
      id=++global_id;
   }
   return &id;
}

int* Ring_base::find_by_arity(repo_by_names_type& repo_by_names, repo_by_arity_type& repo_by_arity, int n, const std::string& name)
{
   int* &id_ptr=repo_by_arity[std::make_pair(name,n)];
   if (!id_ptr) {
      Array<std::string> names(n);
      for (int i=0; i<n; ++i) {
         std::ostringstream tmp;
         tmp << name << i;
         names[i]=tmp.str();
      }
      id_ptr=find_by_names(repo_by_names,names);
   }
   return id_ptr;
}

int Ring_base::global_id=0;

}

// Local Variables:
// mode:C++
// c-basic-offset:3
// indent-tabs-mode:nil
// End:
