elementPairs.hh

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#ifndef elementPairs_hh
#define elementPairs_hh
 
#include "space/element.hh"
#include "toolbox/scannerConnectors.hh"
 
namespace concepts {
 
  // *********************************************************** ElementPair **
 
  template<typename F>
  class ElementPair {
  public:
    virtual ~ElementPair() { }
    virtual const concepts::Element<F>& elm1() const = 0;
    virtual const concepts::Element<F>& elm2() const = 0;
  };
 
  // ******************************************************* ElementPairList **
 
  template<typename F>
  class ElementPairList {
  public:
    typedef concepts::Scan<ElementPair<F> > Scanner;
 
    ElementPairList(concepts::Joiner<ElementPair<F>*, 1>* elmPairs = 0,
        bool remove = true) :
      elmPairs_(elmPairs), remove_(remove) {}
 
    ~ElementPairList()
    { if (remove_)
      concepts::Joiner<ElementPair<F>*, 1>::destructor(elmPairs_); }
 
    void add(ElementPair<F>* elmPair) {
      elmPairs_ = new concepts::Joiner<ElementPair<F>*, 1>(elmPair, elmPairs_);
    }
 
    Scanner* scan() const { return new concepts::PListScan<ElementPair<F> >
            (*elmPairs_); }
  private:
    concepts::Joiner<ElementPair<F>*, 1>* elmPairs_;
 
    const bool remove_;
  };
 
} // namespace concepts
 
#endif // elementPairs_hh