CGMAIterator.hpp

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/* (2006) [email protected] */
/* Renamed from TSTTGIterator to CGMAIterator - J.Kraftcheck - 2007/6/15 */

#ifndef CGMA_ITERATOR_HPP
#define CGMA_ITERATOR_HPP

class RefEntity;

#include <DLIList.hpp>
#include <vector>
#include <algorithm>

class CGMAIterator
{
public:

  CGMAIterator( DLIList<RefEntity*>& list, int size ) 
    : mArray(list.size()),
      mIter(mArray.begin()),
      mSize(size)
  {
    list.copy_to( &mArray[0] );
  }
  
  void reset() { mIter = mArray.begin(); }
  
  bool next( RefEntity** array, int& array_size )
  {
    if (array_size <= 0) {
      array_size = 0;
    }
    else {
      std::vector<RefEntity*>::const_iterator end = mArray.end();
      if ((end - mIter) > array_size)
        end = mIter + array_size;
      RefEntity** ptr = std::copy( mIter, end, array );
      array_size = ptr - array;
      mIter += array_size;
    }
    return mIter == mArray.end();
  }
 
  int size() const { return mSize; }
  
  bool at_end() const
    { return mIter == mArray.end(); }

private:

  std::vector<RefEntity*> mArray;
  std::vector<RefEntity*>::const_iterator mIter;
  int mSize;
};

#endif