StlIterator.h

/*
 *
 * This file is part of Tulip (www.tulip-software.org)
 *
 * Authors: David Auber and the Tulip development Team
 * from LaBRI, University of Bordeaux 1 and Inria Bordeaux - Sud Ouest
 *
 * Tulip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * Tulip 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.
 *
 */
///@cond DOXYGEN_HIDDEN

#ifndef TULIP_STLITERATOR_H
#define TULIP_STLITERATOR_H
#include <map>
#include <tulip/Iterator.h>
#include <tulip/memorypool.h>

namespace tlp {

template<typename VALUE, typename ITERATOR>
struct StlIterator:public Iterator< VALUE  > {
  StlIterator(const ITERATOR &startIt, const ITERATOR &endIt):
    it(startIt),
    itEnd(endIt) {
  }
  VALUE next() {
    VALUE tmp = *it;
    ++it;
    return tmp;
  }
  bool hasNext() {
    return (itEnd!=it);
  }
private:
  ITERATOR it, itEnd;
};
//=================================================
/**
  * @class MPStlIterator
  * @ingroup Iterators
  * @brief MPStlIterator implements memory pool for StlIterator
  * @warning never inherit from that class
  * @see StlIterator
  */
template<typename VALUE, typename ITERATOR>
struct MPStlIterator:public StlIterator< VALUE, ITERATOR >,
  public MemoryPool<MPStlIterator<VALUE, ITERATOR> > {
  MPStlIterator(const ITERATOR &startIt, const ITERATOR &endIt):
    StlIterator<VALUE, ITERATOR>(startIt, endIt) {
  }
};
//=================================================
template<typename KEY, typename VALUE>
struct StlMapIterator:public Iterator< std::pair<KEY,VALUE> > {
  StlMapIterator(typename std::map<KEY,VALUE>::const_iterator startIt, typename std::map<KEY,VALUE>::const_iterator endIt):
    it(startIt),
    itEnd(endIt)
  {}
  std::pair<KEY,VALUE> next();
  bool hasNext();
private:
  typename std::map<KEY,VALUE>::const_iterator it, itEnd;
};
//=================================================
///  StlMapIterator implemetation
template<typename KEY, typename VALUE>
std::pair<KEY,VALUE> StlMapIterator<KEY,VALUE>::next() {
  std::pair<KEY,VALUE> tmp=*it;
  ++it;
  return tmp;
}
template<typename KEY, typename VALUE>
bool StlMapIterator<KEY,VALUE>::hasNext() {
  return (itEnd!=it);
}
//=================================================
}

template<typename KEY, typename VALUE>
struct StlMapKeyIterator : public tlp::Iterator<KEY> {
  StlMapKeyIterator(typename std::map<KEY,VALUE>::const_iterator startIt, typename std::map<KEY,VALUE>::const_iterator endIt):
    it(startIt),
    itEnd(endIt)
  {}
  KEY next() {
    const KEY tmp = it->first;
    ++it;
    return tmp;
  }
  bool hasNext() {
    return it != itEnd;
  }
private:
  typename std::map<KEY,VALUE>::const_iterator it, itEnd;
};

#endif
///@endcond